Development and application of magnetic pump

1. The general situation and development trend of magnetic pump abroad
The development of magnetic pump is inseparable from the development of permanent magnet drive technology. HMD company in the UK put the first leakage free magnetic pump to the market in the 1940s. In t969, Dutch Berger developed a new type of rare earth cobalt permanent magnetic material, which was used in magnetic pump, and further improved the transmission efficiency of the pump. At the beginning of 1970, various kinds of stainless steel magnetic pumps of model mdx series produced by 1waki company in Japan came out one after another. At the beginning of 1973, the non-metallic magnetic pump made of nanfluorine plastic was put on the market. In 1979, the latest mdf-100 magnetic pump was exhibited in the former Federal Republic of Germany. Later, Klaus company of Germany developed a 150 kW multi-stage magnetic pump in 1981, and raised the temperature of the conveying medium to 450 ℃, which became one of the largest magnetic pumps in the world at that time. The flow rate of the foreign magnetic pump is 1150m3 / h, the head is 500rn, the pressure is 4.5MPa, the maximum temperature is 450 ° C, and the motor power is 350kW.
At present, the main manufacturers of magnetic drive pump in the world are: HMD seal pump company of UK, t0ton pump company, hilge pump company, Goulds pump company of America, 1wak · company of Japan, Klaus company of Germany, diekow company, ler company of a11 state, SLM company, etc.
In recent years, the application of magnetic pump is increasing rapidly, and its application range is widening. With the rapid development of world economy, the requirement of industrial environment purification is more and more strict, and the application range of magnetic pump will be expanded day by day. At present, in addition to the magnetic drive centrifugal pump, there are magnetic drive vortex pump, magnetic drive gear pump, magnetic drive rotor pump and other special purpose magnetic drive pump.
2. Development of magnetic pump in China
China's magnetic pump started in the late 1970s, there is still a big gap between China and foreign advanced level in terms of high power and high reliability. At the end of 1970s, according to the prototype of micro magnetic pump in imported film equipment, the development of micro magnetic pump was carried out in China. The matching power of the magnetic pump developed in the 1980s is generally less than 18.5kw, and the speed is ordinary, and the efficiency is lower than that of the general mechanical drive pump.
At present, the domestic magnetic pump design and development, manufacturing technology, materials and other aspects have made great progress, can produce 200 kW magnetic pump. The fluid mechanical engineering technology research center of Jiangsu University cooperates with the pump industry enterprises to develop large-scale low NPSH chemical magnetic pump, large-scale multi-stage magnetic pump and high-speed magnetic pump. The application of magnetic pump in chemical industry will be more and more, and will replace all kinds of centrifugal pump with mechanical seal.

Related products:

Explosion proof oil free vacuum pump

Single stage oil-free vacuum pump

Five Station High Frequency Brazing Machine For Heating Plate

High Frequency Brazing Equipment To Exploration Bit Of Application

Each oblique variable variable plunger pump device should be cleaned

We have repaired hydraulic components for many years, so you can believe that no one can handle them well in terms of hydraulic component repairs. We have the experience and knowledge needed to repair and rebuild piston, vane and gear pumps and motors, suitable for most mobile or industrial applications. Equipment and processing capabilities to provide you with hydraulic maintenance services. These capabilities have been acquired in the past few years, which can save customers' time and maintain our price competitiveness. Every year we find ways to manufacture and purchase parts that are not supplied or supported. This allows us not only to provide support for existing models, but also for outdated models. In addition, our repair support covers most major component manufacturers. Contact us for a quote for repairs.

We serve the industry, big or small. Every oblique variable variable plunger pump unit received in our facility is disassembled and cleaned for inspection. Next, check the tolerance of the accuracy fit. Worn, damaged or missing parts are listed for replacement. After evaluation, our customer service representative will provide you with a competitive price for repairs. After your approval, clean the equipment again, re-verify the tolerances, and prepare the equipment for repairs. The contact surfaces have been refurbished or replaced, and new seals are installed by our well-trained personnel. Our processing workshop can reduce costs and achieve turnover by manufacturing conforming products. After reassembly, the device can be dynamically tested.

Related products:

How To Select Drying Equipment By Raw Material Form?

Rice Dryer To Expand Agricultural Production

Screw vacuum pump in iPad color back shell manufacturing

Vacuum pump unit odor recovery

Replacement of wearing parts of ceramic plunger mud pump

　　①Sealing ring

 

Remove the pressure water ring screw, adjust the overflow valve to gradually increase the system pressure, push the piston, use the plunger and water pressure to lift the seal ring, lift the plunger and stop the pump, remove the piston rod (No. 38) For the connecting screw with the plunger, remove the sealing ring, carefully put the plunger into the pump body (No. 3 3), install the sealing ring (note the direction) and tighten the screws one by one.

 

　　② plunger

 

The method below YB140 is the same as above. After the plungers are pulled out one by one, and replaced with new plungers, tighten the above screws one by one; For pumps above YB200, remove the pressure water ring screw and adjust the overflow valve, so that the system pressure gradually increases. Push the piston, use the plunger and water pressure to bring the seal ring up, lift the plunger and stop the pump, remove the connecting nut between the lower end of the column (No. 35) and the pump body, and set the cylinder (No. 46) to the beam (No. 42) The column, piston rod, sliding frame (No. 34), etc. are completely removed from the pump body to replace the plunger and sealing ring, and then install the removed parts and components.

 Related products:

Screw vacuum pump used in forming vacuum of refrigerator liner

Rotary vane vacuum pump in drying and packaging of organic yellow flowers

Green Environmental Protection Dryer Equipment

Mushroom Drying Equipment Of Drying Technology

Recently launched the latest generation of submersible pumps

　
The submersible pump series design automatic drainage pits, wells and basements, and extract water from rivers and reservoirs from them. Each submersible pump produces 14 m3/hour and 12 m maximum discharge head maximum flow rate

The submersible pump drives a jacket type, and the single-phase AC motor is rated in the range of 0.43 and 1.05 kW. These three sizes are coming, and the water treatment dirt particles can reach a particle size of 10 mm. The pump operation control patent is designed for a magnetic float switch for a housing that does not pass through the fixed operation. Therefore, it is tight, wear-resistant, and protected against overwinding, Kesby said. A locking disc can be installed on the submersible pump to start and stop the pump through an external control system. For mobile use the pump's 10m power cord is provided.

The submersible pump series are made of plastic casing, making it lighter. The shell is corrosion-resistant, sound-absorbing, and impact-resistant, and is a stable handle design.

Related products:

Vacuum pumps for beekeeping

How to use negative pressure vacuum pump

Drying Equipment For The Dye Industry

Conductive Dryer Types Of Introduction

The important role of high pressure plunger pump

High temperature and high pressure cleaning machine working principle of high temperature and high pressure cleaning machine is usually composed of which several parts? In what ways do they play an important role?

(I) High pressure plunger pump high pressure plunger pump is an important component of high temperature and high pressure cleaning machine, it is the formation of high pressure power source. It is also a necessary condition for high temperature and high pressure water jet cleaning equipment to give full play.

(2) Heating module Heating module Heating module is also an essential component of high temperature and high pressure cleaning machine. It can not only make the cold water fully heated, so as to reach a constant water temperature of 150℃, so that the efficiency of high-pressure water jet cleaning object will be very ideal.

(iii) Power Components Power components are the first prerequisite for the normal operation of the high-temperature and high-pressure cleaning machine. The absence of power components is just like the absence of human beings. With the power component, the high temperature and high pressure water jet cleaning equipment can operate normally. The power source of high temperature and high pressure water jet cleaning equipment is usually 11kW electric motor.

(four) high pressure pipe assembly High pressure pipe is the channel conveying high pressure water jet, without such a channel, the completion of the cleaning task is simply unimaginable, therefore, high quality high pressure pipe is also an important component of high temperature high pressure cleaning machine.

Related products:

Hollow Blade Dryer

Rotary Flash Dryer

Vacuum Brazing Machine For PCD Diamond Tools

Other related products:

Liquid Ring Vacuum Pump
Dry screw vacuum pump
Oil Diffusion Vacuum Pump

Roots Vacuum Pump

Piston Vacuum Pump

Molecular Vacuum Pump

Gear pump reduces performance

It should be pointed out that the gap between the rotary vane and the groove is too large to reduce performance. Therefore, it is necessary to ensure reasonable tolerance matching and shape and position tolerance values, pay attention to the thermal expansion of the rotary vane, avoid the roughness of the rotary vane and the groove, pay attention to the cold oil viscosity of the oil, and design sufficient spring force of the rotary vane. When using circular arc separation , The additional eccentricity of the rotor center should not be too large. Otherwise, if the rotary vane passes through two circular arcs, it will tend to break away from the cylinder wall at the intersection point, which will cause impact noise. Generally, the size of the small gear pump is 0.20～0.25mm, and the large gear pump can be appropriately enlarged. Sound of pressure oil in the exhaust dead space and pressure oil in the residual volume. When the gear pump reaches the ultimate pressure, the two pressure oils will be injected into the vacuum chamber at high speed when connected with the vacuum chamber, colliding with the rotor and the cylinder wall to produce sound. The size and location of the two volumes are related to noise.

The impact noise of the valve plate on the valve seat and the support part sucks a large amount of gas

The more circulating oil of the gear pump, the greater the valve noise, the higher the valve jump, the larger the valve area, the greater the noise of the valve, and the material of the valve has a certain influence. The noise of the rubber valve disc should be better than that of the steel sheet or laminate. For this reason, it is necessary to control the oil intake, and the valve flap must be closed in time and tightly. Pay attention to the selection and structure of the valve.

This noise will increase when the echo and bubble burst sound in the box increase.

Therefore, this noise will increase significantly when the gas ballast is turned on or when the atmosphere is vented. If the amount of gas ballast is adjustable, the amount of gas ballast can be adjusted reasonably.

The noise made when a large amount of gas and oil is discharged and hits the oil baffle and other parts

If the parts are not rigid enough or not fastened, vibration and collision will occur, which will increase the noise. Therefore, the oil baffle should not only have sufficient rigidity and be fastened, but also, when it needs to contact other parts (such as the fuel tank), the method of clamping rubber can avoid the collision noise caused by vibration and improve the oil blocking effect.

Related products:

Vacuum Brazing Machine For PCD Diamond Tools

Other related products:

Liquid Ring Vacuum Pump

5 problems with swimming pool pumps

The pump will not stay to promote budding. Once again, it is a deduction game. First, start by the pool. Make sure that the air is not drawn through the separator. Check to make sure that the pool water level is appropriate and no vortex is being established. Sometimes, the skimmer weir will stay in an upward position, blocking the inlet separator. Next, check the suction pipe/valve and pump sump. Make sure that all valve covers are tight and that the pump drain plugs have appropriate O-rings or Teflon tape. Hose clamps, any poly connecting pipes should be re-tightened. The other common place is right in the pump cover. Ensure that all pump cover O-rings and gaskets are intact, dry and not rotted.
Check the air intake of the pump-another area is prone to vibration and heat generation, so making it another candidate is a place where air can "get". Use all senses to find any poor contact. Listen to the air hissing or water as you start and stop the pump spraying. You may need to put some pressure on it! The use of Leak King may be useful to pressurize a line pump or filter from the strainer. After this is done with the pump shut down, put the plug in the pump, you can also close the multi-way valve or the valve close the return line to isolate everything from the point where the skimmer is the most you close it. Any leakage under pressure or emptiness on the suction side of your circulation system will cause dripping (while in a vacuum it attracts air). Other components may experience freeze damage or deformation. Check for pinholes, hairline cracks, or deformity mechanisms.

Related products:

Decomposing Furnace Air Flow On The Reaction Of Raw Fuel
Decomposing Furnace Reformation Of Pulverized Coal Combustion System

Vacuum Brazing Machine For PCD Diamond Tools

Other related products:

Liquid Ring Vacuum Pump
Dry screw vacuum pump
Oil Diffusion Vacuum Pump

Roots Vacuum Pump

Piston Vacuum Pump

Molecular Vacuum Pump