Vacuum pump refers to the device or equipment that obtains vacuum by mechanical, physical, chemical or physical chemical methods. Generally speaking, vacuum pump is a device that can improve, produce and maintain vacuum in a closed space by various methods. Check vacuum damage door closed, no leakage.
Check the condensate steam side discharge door closed, no leakage. The water level gauge for checking the vacuum system does not break or leak. Check low pressure cylinder exhaust steam safety door intact, no suction. Check whether there is air leakage in the connection between the vacuum extraction pipeline and the cylinder, where the air leakage decreases when the load decreases, and the vacuum rises slightly after the load increases. Check whether the water level of the low pressure heater is normal under the negative pressure and whether the drain gate is tight. Check whether the gravity return water of the speed regulating feed pump leads to the condenser. If the return water is small and the water seal bag cannot seal, the gravity return water of the sealed water of the feed pump should be poured into the ditch. Check whether the water seal, pipe, flange or weld of the vacuum system valve is not tightly spaced in the clothing school, especially the expansion box or boiler starting separator to condenser pipe and valve.
1. Corrosion protection methods for water ring vacuum pumps:
Surface treatment: remove the surface oxide thoroughly and clean the surface with acetone.
Smearing material: First, thin coat a layer of material, to ensure that the bonding and full coverage, and then evenly apply the material to the repair surface, to meet the required repair thickness can be.
Blending materials: mix in strict proportions and mix evenly until there is no chromatic aberration.
Installation and precautions: Installation should be carried out according to assembly requirements. Repair and protection materials should avoid being knocked or impacted by external forces. If materials affect assembly, they can be treated by grinding method. Never knock, so as to avoid damage to other materials.
Two, vacuum pump boring machine process route
The key point of processing technology of vacuum pump body is to ensure the correct position of assembly datum face and water chamber runner. Boring machine is the core measure in processing of pump body.
The boring process of vacuum pump is as follows:
1. The bottom foot pad is used to align the runner and clamp it. The flanges at the entrance and exit of the vehicle are respectively clamped to ensure that the flanges are parallel and coincide with the center of the runner.
2. The intake flange is placed on the worktable to find the positive flow channel and then compressed, and the holes at the assembly end of the impeller are aligned. Then the worktable rotates 180 degrees and locks the bottom and foot of the car to ensure the position accuracy of the assembly hole and the flow channel.
3. Finish other processes according to the drawing.
According to market information, most quality problems are related to poor manufacturing, so the importance of technology can not be ignored. The processing technology of vacuum pump in the production process, regardless of the structure, should be the focus of attention.
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