9/29/2019

How do you make vacuum pumps last longer?


How do you make vacuum pumps last longer? Correct operation after vacuum pump shutdown!
Vacuum pump is a kind of rotary container, which is widely used in many fields. Many people know about vacuum pumps and how to use them. But few people can stop the pump correctly. In order to make you can pay more attention to the following introduction of the correct vacuum pump shutdown operation.
1. Close the inlet valve;
2. Close the working fluid valve;
3. Stop the motor operation;
4. Close the valve in the flushing pipeline with mechanical seal;
5. If the ambient temperature is lower than 0℃, drain the liquid in the pump body, separator and all pipelines after shutdown;
6. If the vacuum pump is filled with working fluid, it will cause difficulty in starting the vacuum pump. Therefore, after stopping the pump, it is necessary to ensure that the liquid cannot enter the pump body and inlet pipe from the exhaust pipe, working fluid supply pipe and so on. If the exhaust side with gas and water separator should pay more attention. If in other installation conditions or failure can not determine whether the pump has been filled with working fluid when the start should be the first to put the working fluid in the pump clean or ensure that the working fluid accounted for about 1/2- 2/3 of the pump cavity.
Friendly tips to master the correct vacuum pump shutdown operation, not only to improve the work efficiency and effectively improve the service life of the vacuum pump, hope you can pay attention to. We sincerely welcome friends from all walks of life to discuss cooperation, work together to create a better tomorrow!

analysis instrument industries vacuum pump
mechanical booster vacuum pump
rotary lobe vacuum boosters
PulPaper Helsinki 2018 Finland

9/26/2019

Chemical pump seal of several forms


Chemical pumps are widely used in chemical, petroleum, metallurgy, light industry, synthetic fiber, environmental protection, food, medicine and other sectors. Compared with other kinds of pumps, the chemical pump has the advantages of stable and reliable performance, good sealing performance, beautiful shape and convenient maintenance. In order to improve product quality, reduce run, run, drop, leak, prevent pollution, improve the environment, play a great role. So the chemical pump seal form of the main points of which several?
1. Oil seal:
Is a self-tightening lip seal, its structure is simple, small size, low cost, convenient maintenance, resistance torque is small, can not only prevent the media leakage, can prevent external dust and other harmful substances intrusion, and have a certain degree of compensation for wear, but not resistant to high pressure, so generally used in low pressure occasions on the chemical pump.
2. Gasket seal:
Gasket is the basic element of centrifugal pump static seal, the use range is very wide. The selection of gasket is mainly based on the chemical pump transmission medium, temperature, pressure and corrosive factors.
3. Thread seal:
There are two general forms on chemical pump, one is the thread connection gasket seal, one is the thread and fill seal, both are used for small diameter thread connection sealing occasions. The gasket seal of the threaded electric diaphragm pump connection gasket is the gasket, and the thread only serves to provide compression force.
4. Labyrinth seal:
When the design is reasonable, the processing is excellent, the assembly is complete and the speed is high, the labyrinth seal effect is very good. But in practical application, the resulting chemical pump leakage is a lot, so in the chemical pump seal is not commonly used.
5. Packing seal:
It is to put the packing with rich compressibility and resilience into the packing box and convert the axial pressing force of the gland into radial sealing force so as to play a sealing role. This method of sealing is called packing seal and this packing is called packing. Due to the packing seal structure form is simple, easy to replace, low price, adapt to the speed, pressure, medium is broad and widely used in the design of chemical pump.
6. Power seal:
When the chemical pump is in operation, the pressure head generated by the auxiliary impeller balances the high-pressure liquid at the outlet of the main impeller, so as to realize the sealing. When parking, the auxiliary impeller does not work, so it must be equipped with a parking seal device to solve the possible leakage of chemical pump during parking. Auxiliary impeller seal structure is simple, reliable seal, long service life, chemical pump operation can be achieved watertight, therefore in the chemical pump transport medium containing impurities on the pump often used.

pulp paper making pump
Liquid Ring Vacuum Pump stock
Low maintenance Vacuum Pump
Low noise Vacuum Pump

9/23/2019

High frequency discharge in water ring vacuum pump


Water ring vacuum pump for suction flammable and explosive gas, gas can also be used in addition to the dust, water cut and popular, but due to the equipment used for a long time will appear the phenomenon of high frequency discharge, this phenomenon will change the use efficiency of water ring vacuum pump, in order to equipment can run smoothly, need to know the high frequency discharge of water ring vacuum pump.
1. Since electron diffusion is faster than ion diffusion, positive potential appears at the axis and negative potential appears at the tube wall as a result. In this way, electrostatic field is generated from the water ring vacuum pump axis pointing at the tube wall. Therefore, there are two kinds of electric fields in the discharge tube, one is the eddy electric field around the magnetic field line, the other is the electrostatic field pointing to the wall from the axis. When these two fields are applied simultaneously, the electrons move around the axis and extend toward the wall of the tube, resulting in a series of concentric rings. Because the energy of electrons at different radii is different, the energy levels and the number of electrons excited are different, therefore the rings with different radii have different colors.
2, this water ring vacuum pump high frequency discharge, as long as there is a high frequency electric field can be formed, not necessarily to electrode, so generally known as non-polar discharge. Infinite discharge can be formed not only under alternating electric field but also under alternating magnetic field.
3. When the frequency is low and the amplitude of harmonic vibration is much larger than the distance between the two poles, the electrons in the water ring vacuum pump go through the whole process of collapse, discharge and extinction in each half cycle, and the discharge situation at this time is the same as the dc situation. At higher frequencies, where the amplitude of the harmonic vibration is much smaller than the distance between the poles, the ionization capacity of the electrons is greatly enhanced by the constant movement of the electrons back and forth.
Therefore, it can be known that in the use of water ring vacuum pump, due to the different diffusion speed of electrons and ions, the electrons keep moving to strengthen the ionization capacity, thus forming the high-frequency discharge phenomenon. This phenomenon can effectively reduce the power consumption of water ring vacuum pump, reduce the enterprise cost, and promote the use of equipment.

Liquid Ring Vacuum Pump for Distillation Column
Pump in the oil and gas industry
Pump for frequency converter
Pump for exhaust gas

CL vacuum pump

9/19/2019

The specific application of oil-free vacuum pump in the field of industrial production


Use of vacuum pump:
1. Main pump: vacuum pump used to obtain the required vacuum degree in vacuum system.
2, rough pumping pump: from the atmospheric pressure, reduce the pressure of the system to another pumping system began to work vacuum pump.
3. Front stage pump: a vacuum pump used to maintain the front stage pressure of another pump below its highest permitted front stage pressure. The front pump can also be used for rough pumping.
4. Maintenance pump: an auxiliary front stage pump with small capacity is equipped in the vacuum system to maintain the normal operation of the main pump or the vacuum pump with low pressure required by the evacuated container.
5, coarse (low) vacuum pump: starting from atmospheric pressure, reduce the pressure of the container and work in the low vacuum range of vacuum pump.
6. High vacuum pump: vacuum pump operating in high vacuum range.
Ultra-high vacuum pump: vacuum pump operating in the ultra-high vacuum range.
8, booster pump: installed between the high vacuum pump and the low vacuum pump, used to improve the extraction system in the middle pressure range of the extraction volume or reduce the capacity of the front stage of the pump requirements (such as mechanical booster pump and oil booster pump).
In order to ensure the safety and performance of oil-free vacuum pump, some problems and matters should be paid attention to in the process of use to avoid the damage of vacuum pump and the failure of working performance. So, what does that include?
The oil-free vacuum pump should be operated under the defined temperature condition. If the temperature exceeds the limit, it is likely to lead to medium leakage and cause accidents. Under normal circumstances, the vacuum pump is equipped with a temperature sensor on the surface, which will automatically stop operation or give an early warning instruction when the temperature exceeds the limit. Vacuum pump magnetic distance can not be designed too short, it is easy to cause demagnetization and demagnetization phenomenon, can not work normally.
Vacuum pump inside there are impurities, particles, to ensure the magnetic effect. In the transport medium, such as pipe mouth to carry out filtration treatment. To prevent the vacuum pump friction idling will cause serious friction phenomenon, so we must be careful to prevent idling phenomenon. In the process of use, the medium can not be evacuated, oil free vacuum pump can not be used in the pressure environment or system.
The content described above is the specific application of oil-free vacuum pump in the field of industrial production process, need to pay attention to the specific matters, hope users can carefully read.

Vacuum pump for oxygen
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Pumps for Plastics Processing
Industrial pump manufacturer

9/18/2019

Invention of the first vacuum pump


Torrey removal USES mercury column inversion to create a vacuum on the top of the glass tube. People call it torrey removal vacuum. It can be said that this is the earliest method to obtain a vacuum. When his discovery became known, many experiments were carried out to study the phenomenon. In 1647, for example, a French physicist named g. Robenval did an interesting experiment in which he took the fish's air bladder out of the belly of a carp, drained it as much as possible, fastened the opening and placed it in the toritelli vacuum. As a result, the fish expands. This experiment convincingly shows that the residual air left in the fish's air pocket at atmospheric pressure expands to a large volume when the external pressure drops to zero. Soon a book was written commenting on this experiment, suggesting that air is elastic, like a sponge or wool, contracting under pressure and expanding when the pressure is reduced.
Gerrick also discovered a vacuum without knowing about torricelli's experiment: his experience was fascinating. One day, he let the family use the water in the pump suction barrel, in the process of extraction pump off. They have to tie it with a cloth, as the stuffing too severe, barrel mouth sealed, the results of the air in the stab also smoke, only heard the noise of a boiling inside: rick was inspired from it, with copper spherical shell instead of wood tong. Let family using pump suction, family smoking more and more difficult. The only listened to peng, copper ball fall flat.
In 1654, to demonstrate the pumping experiment to the public, glick arranged two eye-catching performances. Because he was then mayor of the German city of madeburg, the two experiments were called the madeburg hemispheric experiment. In one experiment, two tightly buttoned hemispherical metal shells were pulled apart by 16 horses. In the second experiment, a pair of displaced hemispheres were suspended from a scaffold and could withstand very large loads. Glick did not provide an explanation for the cause of suction, his contribution. The vacuum pump was invented. The mayor of madeburg caused a sensation in Germany, and when the news reached the other side of the English channel, there was a stir, and many more experiments were done. One of them was the famous Boyle;

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9/17/2019

Selection range and principle of vacuum pump oil viscosity?


The quality of vacuum pump oil depends on the viscosity and vacuum degree, and the vacuum degree depends on the numerical value under different temperature conditions. The higher the temperature, the more stable the performance of vacuum degree is the good oil.
I. Viscosity Range of Vacuum Pump Oil in Common Use
1. Piston vacuum pump (W-type) can use general oil, using V100, V150 viscosity grade oil.
2. Rotary vane vacuum pump (2X type) uses V68 and V100 viscosity grade oil.
3. Direct connection (high speed) rotary vane vacuum pump (2XZ type) uses V46 and V68 viscosity grade oil.
4. Sliding valve vacuum pump (H type) uses V68 and V100 viscous grade oil.
5. Yucycloid vacuum pumps (YZ, YZR) use V100, V150 viscosity grade oil.
6. For lubrication of gear transmission system of Roots vacuum pump (mechanical booster pump), V32 and V46 vacuum pump oil can be selected.
II. Viscosity Selection Principle
The choice of oil viscosity is one of the important factors for the performance of vacuum pumps. Therefore, the selection of oil viscosity by various vacuum pumps is very important. The principle of oil viscosity selection is as follows:
1. The higher the speed of the pump, the lower the viscosity of the selected oil.
2. The greater the linear velocity of the pump rotor, the lower the viscosity of the selected oil.
3. The more precise the processing accuracy of pump parts or the smaller the gap between friction parts, the lower the viscosity of selected oil products.
4. When vacuum pump is used at high temperature, it is better to choose the viscosity of oil.
5. Vacuum pumps with cooling water circulation should generally choose oils with lower viscosity.
7. Other types of vacuum pumps can select corresponding oils according to their rotational speed, processing accuracy and ultimate vacuum.
The viscosity of liquids is the resistance of the flow of liquids, or the internal friction of liquids. The greater the viscosity, the greater the resistance of the moving speed of various components, the higher the temperature rise, and the greater the power loss; the smaller the viscosity, the worse the sealing performance of the pump, resulting in gas leakage and vacuum deterioration.

PVD coating machine pump
Milking machice pump
CNC machine pump
Vacuum adsorption pump

9/16/2019

A cleaning process commonly used in vacuum technology


The cleaning treatment in vacuum technology generally refers to the cleaning treatment of the structural materials, filling materials and vacuum zero parts of the vacuum device. In all kinds of vacuum process production, such as electric vacuum process, vacuum coating process, vacuum welding process, all attach great importance to vacuum health. In the electric vacuum process, the parts assembled to the high vacuum environment are required to be carefully cleaned in advance, otherwise various pollutants can become the source of a large number of gases and vapors, which will greatly prolong the exhaust time of vacuum devices, and it is not easy to obtain high vacuum. The removal or reduction of contaminants will benefit from a good vacuum, increased connection strength and airtightness, and improved product life and reliability.
Common types of pollutants:
(1) grease: lubricant and vacuum grease contaminated during processing, installation and operation;
(2) water droplets: operation of the hand sweat, blowing glass saliva, etc.;
(3) surface oxide: oxidizable material long-term base dew or placed in the moist atmosphere formed by the surface oxide;
(4) acid, alkali, salt substances: wash residual substances, hand sweat, minerals in tap water;
5. Dust and other organic matter in the air.
Cleaning treatment:
First, solvent cleaning
Solvent cleaning is the most common method in vacuum system cleaning. Common cleaning solvents include organic solvents, water containing detergent, dilute acid, alkali, petroleum fractionates, various metal cleaning agents and so on. Depending on the contaminant, different solvents should be used for cleaning. Such as mineral oils need to use organic solvents, corrosion needs to use acid metal cleaning agent.
Second, ultrasonic cleaning
Ultrasonic cleaning is to use ultrasonic gap to clean the target, can achieve a strong physical cleaning effect, remove strong adhesion pollutants. Ultrasonic cleaning can enter into the complex profiled channels, which can not be realized by many cleaning methods. Ultrasonic cleaning in the application, according to the different pollutants, with a variety of cleaning solvents.
Steam degreasing cleaning
Steam degreasing cleaning is suitable for cleaning grease film and lipid film on the surface. After scrubbing or ultrasonic cleaning, steam degreasing cleaning can achieve a good cleaning effect. It is often used in the last step of cleaning glass objects.
Electrolytic erosion cleaning
Electrochemical erosion cleaning is similar to electropolishing, which refers to the use of electrolysis in the solvent to remove the thin rust or oxidation film on the surface of metal parts and other pollutants, mainly used for alloy parts with high chemical stability, such as stainless steel, heat resistant steel, nickel-based alloy and so on.
Heating and irradiation cleaning
Heating cleaning is mainly to heat the parts under normal pressure or vacuum, so that the surface of volatile pollutants volatilize to achieve the purpose of cleaning. Irradiation cleaning is the decomposition of hydrocarbons on the surface of components by ultraviolet irradiation.
Discharge cleaning
Discharge cleaning is generally used in high vacuum and ultra-high vacuum system cleaning. The use of electrons to bombard the gas results in desorption and the removal of certain hydrocarbons. The effect of discharge cleaning depends on the material, geometry and its relation to the surface.
Nitrogen cleaning
Nitrogen cleaning mainly takes advantage of the small adsorption heat, short retention time of nitrogen on the material surface and its characteristics of easy extraction. Nitrogen is used to flush the polluted vacuum system and squeeze the adhesion space of water and other gas molecules to shorten the extraction time of the vacuum system.
A good vacuum environment will have a good effect on the vacuum device itself and vacuum process, we should pay attention to it.

Solvent recovery pump
Oil purification pump
pumps for refinery project
Wood drying pump

9/11/2019

Vacuum pump internal rotor coating - ni - p alloy


Nickel phosphorus alloy
Electroless nickel-phosphorous alloy coating can obtain uniform, compact and bright nickel-phosphorous alloy coating with metallic luster. Due to its high hardness, uniform thickness and excellent wear resistance, it is widely used in industry. It is suitable for nickel plating on metal surface (such as: iron, stainless steel, aluminum, copper, etc.), and it is also suitable for nickel plating on non-metallic surface, without expensive palladium deposition, with low cost. For example: ceramic nickel, glass nickel, diamond nickel, carbon nickel, plastic nickel, resin nickel, and so on. Tank maintenance is simple. Low cost, no need for plating equipment.
1, corrosion resistance: the process after the treatment of the metal surface amorphous coating, corrosion resistance is particularly good, sulfuric acid, hydrochloric acid, caustic soda, salt water test, the corrosion rate is lower than 1cr18ni9ti stainless steel.
2. Good wear resistance: since the surface after catalytic treatment is amorphous, i.e. in the basic plane state, it has self-lubricity. Therefore, the friction coefficient is small, good non-adhesion, high wear resistance, in the case of lubrication, can be used instead of hard chromium.
3, high gloss: catalytic plating after the surface gloss for lz or Poland 8-10 can be comparable to stainless steel products, white and bright stainless steel color. Workpiece coating, surface smoothness is not affected, no further processing and polishing
1, pre-treatment of the workpiece: pre-treatment is very important for the quality of coating, to make the surface of the workpiece before plating no pollution, and is in the active state, the process mainly includes: oil removal, rust removal, polishing, washing.
2. Pickling activation: soak the workpiece with pickling activator for 2-3 minutes, and then wash it clean.
3, with hot deionized water to wash the workpiece, the workpiece temperature, to avoid the next step of plating, cold workpiece absorption of plating solution heat and cooling, resulting in stop plating.
4. Hang them in the plating bath in accordance with the loading ratio of 0.5-1.5dm2/ l, and control the bath temperature at 85-92 ℃.
5, the process of plating should have a moderate light stirring, so that the temperature and the distribution of bath evenly, so as to ensure the stability of electroless nickel plating, and the consistency of the coating. At the same time, the bath should be filtered by circulation. Filter screen: aperture 1-8 micron, resistance to 100 degrees Celsius, acid resistance.

What is a sugar mill pump?
Chemical plant pump
Coal mine pump
De-salination pump

9/10/2019

Water ring vacuum pump shaft maintenance method


The damage of the shaft accounts for a large proportion of the damage of the parts of the single-use water ring vacuum pump. Damage to the pump shaft includes bending, cracking and breaking.
Pump shaft bending is mostly due to the sleeve stiffness is not enough, coupled with the impeller has a large imbalance, the operation of deformation. The bending direction and magnitude of the shaft can be measured by:
Put the shaft on the support, adjust the two support points (can be the hole in the center of the pump shaft, or the neck of the shaft) to the equal height, select several equidistance sections on the shaft, and measure the radial runout in four directions (that is, measure once per week when rotating 90°) with a micrometer in the rotation circle of the shaft, and record it. The bending values in the four directions can be obtained from this data, and the direction and size of the larger bending can be found by the graphical method, so that straightening can be carried out.
The cracked grave and broken parts of the pump shaft, often occur in the local stress concentration, such as the keyway edge, the diameter of mutation. The cause of damage is often due to vibration induced fatigue failure.
If the pump shaft fatigue crack (a precursor to breaking), should be promptly replaced. If due to objective factors cannot be replaced temporarily and need to continue to use, the temporary remedy is to carry out welding of cracks. When using the pump shaft after repair welding, always pay attention to the change of repair welding area, so as to avoid accidents.
In the use of single-use water-ring vacuum pump, the failure often occurs is the break of the pump shaft (especially the pump with large gas volume). The fracture surface is usually perpendicular to the axial line, very neat like a knife cutting, the whole section is mostly smooth and metallic luster, a small part of the rough. Obviously, this is the fracture characteristic caused by fatigue failure.
The main cause of fatigue damage is, due to the pump shaft in the process of operation, pump cavity gas on the pump shaft force, which is also called radial force.
In addition to the fundamental reason of radial force in water ring vacuum pump, the unreasonable structure is also an important reason that cannot be ignored. Mainly include:
At present, the water ring vacuum pump shaft and impeller are the first level of dynamic fit, and the keyway is not sealed with type 0 sealing ring, the liquid in the pump (especially when corrosive liquid is used as liquid ring in chemical industry) will enter the shaft hole through the fit gap and the keyway, corrosion shaft hole of shaft and impeller, greatly reducing the fatigue strength. The increase of fit gap after corrosion and wear (some wear into elliptic shaft hole) not only affects the performance, but also intensifies the vibration and promotes the fatigue fracture.
General water ring vacuum pump shaft without heat treatment, so low fatigue strength. In order to prevent fracture, the pump shaft at least to carry out conditioning treatment, where conditions are also nitriding treatment.
When designing, avoid too large cross section mutation. Use rounded corners instead of sharp corners in transitions. Surface finish should not be too low, especially in the shaft easily broken place to pay attention to. When processing, different shaft diameter transition at the circumference of the processing, to ensure quality, in strict accordance with the drawings required size and light pitch, pump shaft surface and transition execution can not have knife marks, scratches, bruises and other defects.
Pump shaft fatigue damage to the production of great harm, is the user is very concerned about the problem. The solution is: according to the size of radial force to check the fatigue strength of the pump shaft, the use of corrosive gas and liquid ring, to use the corresponding corrosion resistant materials, pump shaft must be conditioning treatment, processing must ensure the quality and so on. Above is the vacuum pump manufacturer not yao, for you to do the detailed introduction, hope to help you.

Refinery pump
Food packaging pump
Drying pump
Paper mill pump

rotary vane pump manufacturer‎

9/06/2019

Enhance the processing level of dry screw vacuum pump


Now the processing capacity of dry screw vacuum pump, at present the whole industry is relatively good, the company according to the requirements of the product performance, in view of the enterprise all aspects of the practical ability, enhance the technical improving application effect on the whole, in various aspects ability to apply more products fully embody the process, according to the practical application ability to develop products, to increase the processing capacity of the entire device, according to the actual demand of ability, enhance the capacity of the manufacturing staff of technical requirements, expand product performance of the whole application level.
To make the level of processing of dry screw vacuum pump, only for processing technology is not enough, should take advantage of the advanced productive forces, combined with the operating personnel's technical ability, to keep on learning new processing techniques, expand the productive forces, enhance its product all aspects of the effect of practical application, thus to improve its product is essentially the influence, accelerate the development of the performance of the equipment, so as to promote improving the overall performance of the products, and expand its application ability constantly improve, only in this way can truly reflects the advanced nature of the equipment.
Therefore, the level of processing, for the overall quality of screw vacuum pump is very critical, to explore more advanced processing skills in the continuous development, to product development and effectively improve, expand the effect of all aspects of application, so as to achieve the overall promotion of product development.

How to choose a dry screw vacuum pump?
Dry screw vacuum pump series
Roots liquid ring unit for silicone
Cone two-stage liquid ring vacuum pump

9/04/2019

Flow state of vacuum system of stainless steel vacuum pump


For some meteorological terms, we may not understand, such as airflow, it refers to the movement of air flow, that is, the force of air on objects, in some closed working environment or equipment has an important role and influence. The following is mainly for you to introduce the stainless steel vacuum pump vacuum system flow state knowledge.
1. The turbulence.
Turbulence occurs only for a short period of time at the beginning of the operation of the pump vacuum system. The pressure and velocity of gas in the pipeline are high, and the flow is in an unstable state. Turbulent streamlines have no rules and vortices, particle velocity changes rapidly, acceleration is large, and inertial forces play a dominant role in the flow.
2. Sticky flow.
When the gas pressure in the pipeline decreases gradually, the flow line starts to become regular and changes with the shape of the pipeline, and the flow becomes a flow layer with different speeds. This gas flow state is called viscous flow. At this point, internal friction begins to dominate the flow.
Stainless steel vacuum pump
Molecular flow.
Further reduction when the gas pressure, gas molecules when the mean free path of pipe diameter, the collision of gas to negligible levels, less thermal motion of the gas molecules depend on itself, the tube wall collision, molecular density gradient in the vacuum pump vacuum system pipeline, is composed of high voltage side to low voltage side, is the comprehensive effect of large molecular single movement.
4. Transition flow (turbulence - viscous flow, viscous - molecular flow)
Transition flow is an intermediate flow state, turbulence - viscous flow, due to the short turbulence is generally not considered; However, viscous - molecular flow, which spans the two fields of fluid mechanics and statistical mechanics, lacks systematic theory and generally adopts the method of revising existing theories or semi-empirical formula.
The above is the stainless steel vacuum pump vacuum system of four air states, for this kind of equipment with high sealing requirements, its air control is very important work, because it will affect the internal pressure, thus affecting the working state of the equipment, so we need to pay more attention.

Liquid ring vacuum pump series
Industrial liquid ring compressor
Screw vacuum pump for vacuum retraction
liquid ring vacuum unit supplier

9/02/2019

Vacuum pump industry in china of development


Some thoughts on the development of vacuum pump equipment industry in China
China's vacuum equipment industry has made great development and great progress since the reform and opening up more than 20 years, which is reflected not only in the output value, the output of the substantial growth, but also in varieties, specifications or in the comprehensive technical level has made considerable achievements. Especially since the ninth five-year plan, enterprises in the industry have seized the opportunity to adjust the product structure and vigorously promote technological innovation, and achieved many new products and technological achievements at the industrial level and national level, thus contributing to the national economic construction, the development of science and technology, and the upgrading of national defense high-tech.
At the same time, it also highlights the fact that the development and application of high and new technology promotes and drives the development and technology upgrading of vacuum equipment industry. The development of high and new technology (new material, new energy, new technology and new technology) cannot be separated from the wide application and strong technical support of vacuum technology.
Since the tenth five-year plan, especially since China's entry into the WTO, the vacuum equipment industry is facing more and more problems, the competitiveness of the market has not been able to meet the needs of the rapid development of national economy, its own situation has not been able to adapt to the complex market competition situation. Although in recent years we have solved the immediate problem of food, but in the long run, where is our market? How can we improve our technology and face the market? Do we still have the advantage to fight foreign companies? These have been placed in front of our reality, can not cause our vacuum equipment industry thinking. While thinking about these problems, we must find ourselves and understand ourselves. Only in the face of existing problems, can we analyze and solve them.
Analysis of vacuum equipment industry problems
In recent years, our industry has strengthened the external and intra-industry exchanges. No matter the comparison between the whole industry and the same industry abroad, or the comparison between each other in this industry, it has exposed our existing problems and gaps. I think these problems are common, and they must be taken seriously in the future.
1. Poor r&d ability.
It can be said that there is no capital input or only a small amount of capital input. Even if it is the so-called new product research and development, but also just walk and take orders, while design, while production mode, to some extent caused the equipment performance is not reliable and the process is not mature, to the use of customers bring hidden trouble. Foreign counterparts have invested a large amount of funds in research and development, and carried out research and development of key parts and basic parts, as well as process exploration and solidification, forming the advantages of a certain product or a certain field. When we carry out research and development, we can only run behind others, not to mention the original type. When we are about to mature or form a certain competitiveness in the market, others will have long-term successful products to market, forming a virtuous circle of competition.
2. Technological transformation lags behind.
Old plant, old equipment, old technology is still the mainstream, although in recent years a few enterprises moved and have changed, but the overall manufacturing level, technology level, detection level is still relatively backward, and foreign peer enterprises can not be compared. It is difficult to eliminate in a short time the problems of technological transformation left over from the old system. Obsolete equipment, leading to backward technology and low level of products, which almost every enterprise in the industry. The overall technology of mechanical vacuum pump in our country is not backward, but its performance is low due to the backward technological means. Although some manufacturers have purchased advanced CNC machining centers or special CNC machine tools, but the total amount is still insufficient, the comprehensive ability of technology still can not catch up with foreign counterparts. The second phase investment of German laibao company in tianjin reflects the world's first-class level in terms of plant facilities, working space, manufacturing capacity and testing methods. And how does one company in our industry compare? Equipment ability and technological means are the most basic competitiveness of enterprises. If our enterprises still stay in the more primitive manufacturing means, where is the competitiveness of enterprises? The future development of the enterprise where!
3. The management mechanism and mode do not meet the needs of modern enterprises.
State-owned system from the factory to the so-called company system construction system; A family or progressive partnership of shares among friends; All these reflect the outdated management concept of dofang, and the bad habit of replacing the legal system with human system.
The disadvantages of mechanism cannot promote the development of enterprises, and the incentive model of the three systems of modern enterprises cannot be implemented in enterprises. Even those enterprises that have undergone joint-stock transformation or have obtained advanced management of China's machinery industry still lag far behind western developed countries in terms of management. In Japanese vacuum industry production enterprises, kanban management in production organization, PDCA management in product quality, clean management in work site and so on all reflect the material civilization and spiritual civilization of modern enterprises, as well as the scientific concept of people-oriented.
4. Talent.
This is our vacuum equipment industry and even the whole machinery industry common problems. High-quality pioneering technicians, skilled craftsmen and white collars with unique management all seem to be short of money. Technical personnel, technical workers and management personnel are the three cornerstones to support the survival of enterprises. And there is a general shortage of three kinds of talent in our business, which softens the foundation of enterprise survival. As far as enterprises are concerned, market expansion depends on products, product development depends on talents, and talent development depends on environment (policy and treatment). In this chain, people are the first. In enterprises in developed countries, the educational level of blue collar employees is shrinking year by year, and the quality of blue collar employees is generally improved. In our country, the university this, the specialized subject graduates in how many people to open the machine tool? Although some enterprise recruits the person to clearly stipulate that certain academic degree is set for when worker post, but carry out to post or stay on post long-term dedication can have how many people? For the development and survival of the enterprise, the vacuum equipment industry continues to attract college graduates in the difficult situation, so as to enrich the technical staff and the continuation of the enterprise. However, in the college graduates after the enrollment expansion, the comprehensive quality is generally low, more than pay, less than dedication, more than oral, less than practice phenomenon is common. A computer and a foreign language are all his studies. A mechanical engineering college graduate, even the basic knowledge of mechanical processing do not understand, which reflects the problems in our teaching and education. In our enterprise, in recent years, there have been a lot of college students, but also left some people, some of the people who have become the backbone, who think they have practiced in the industry for a few years, but the social recognition? We all have our reasons. At best, less than 25% are engaged in product research and development after graduation from vacuum major in university, which brings hidden trouble to the accumulation of basic talents in vacuum equipment industry. Everyone to do the circulation, everyone to do the agency, research and development of this kind of difficult work who will do? The technical promotion relies on the talented person, relies on the talented person's comprehensive quality, relies on the high quality technical team to realize. At present, the technical talents who are still struggling in the vacuum industry research and development position are the hope of the vacuum equipment industry and the development of China's national industry. Our team, though still thin at the moment, has gone through the waves and left behind only gold. With the passage of time, the talent problem will have a good turn.

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