Vacuum booster pump is mainly used for drawing light vacuum booster brake system can also be used for other transport vehicles and construction machinery. The use of vacuum assisted braking system can improve brake reliability and reduce driver fatigue, help reduce the incidence of traffic accidents and improve vehicle safety. At present, the rapid development of domestic light vehicles, which undoubtedly for the vacuum booster pump provides a vast market. Therefore, in the promotion and use of the process, we must understand and master its performance, principles. The only way to effectively ensure the pump braking performance, extend the service life, play a safety role.
1. Vacuum booster pump works
The vacuum booster pump is mainly composed of the pump body, rotor, slider, pump cover, gear, seal and other components. When the pump is working, the eccentric rotor with four slides rotates counterclockwise and the slider rotates in its own centrifugal force Under the action, close to the inner wall of the pump glide, suction studio continues to expand, was pumping gas through the suction tube to open the one-way valve (pump built-in check valve, the system from the packing effect) into the suction studio. When the slider to a certain position, the inhalation is completed, then inhaled gas is isolated, the rotor continues to rotate, the isolated gas is gradually compressed - the pressure rise. When the studio goes to communicate with the vent, the gas is vented from the vent. Pump work process, the slider will always be divided into four pump chamber, the rotor per revolution, there are four suction and exhaust process.
2. Usage and maintenance precautions
Vacuum booster pump is a high precision, work-sensitive pump, the use must strictly abide by the following rules:
(l) The vacuum booster pump uses oil to lubricate the friction surfaces and seals all clearances (rotor, slider, pump body and pump cover). Therefore, appropriate lubricant and suitable lubrication method must be selected.
(2) should be used regularly check the operation and lubrication is normal, with or without abnormal noise, so that timely detection and troubleshooting.
(3) should always check the use of the pump leaks.
(4) If you do not use the vacuum booster pump for a long time, do not immediately work full load when reused.
3. Common failures and troubleshooting (1) the maximum pump vacuum is low, the pump extraction time is extended; failure causes: Run, lubricating fluid is not sufficient; suction pipe leaks; parts wear; gap increased leakage. Troubleshooting: Check the viscosity of lubricating oil, if not qualified, the replacement of the appropriate viscosity of the oil; Check whether the pipeline leaks, if the leak, you need to replace the leak; Check the parts for wear and tear, if worn Those who need grinding or replacement of new parts; check the pressure of lubricating oil, and meet the requirements. (2) pump does not hold pressure, leakage; failure causes: seal leakage diagnosis and troubleshooting: Check the seal is worn and inelastic, if worn, need to be replaced with a new seal. (3) leaks at each interface; cause of the malfunction: the connector is loose or the seal is damaged. Fault diagnosis and troubleshooting: Check whether the loose joints, if loose, need to be sealed sealant fastening joints; if the seal is damaged, the need to replace the new pieces.
4. Disassembly pump precautions
Vacuum pump parts with high processing accuracy and assembly accuracy, in general, users do not disassemble, there are questions should be sent to the manufacturer or service center for inspection and repair, if you must disassemble, you should note the following: (l) vacuum booster pump rotor and gear are interference fit, can not be removed. (2) The parts are not allowed bump and scratches, the parts clean with kerosene, stored in a clean box. (3) should pay attention to the sliding block slider arc outward, may not be installed. (4) parts must be clean assembly. (5) After the pump is assembled, the rotor should rotate flexible.
5. Custody
Vacuum booster pump should be stored in a dry, non-corrosive gas warehouse, not in the high temperature and -20 ℃ below the long-term storage in low temperature environment, in order to avoid rubber seals aging, and often check the corrosion conditions, if necessary, replace the pump Anti-corrosion oil.
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