Small diaphragm vacuum pumps, with advanced design, high working efficiency and long service life, is a replacement product integrating high technology. It is mainly used in medical and pharmaceutical product analysis, fine chemical industry, biochemical pharmacy, food inspection, public security criminal investigation technology and other fields. It is a matching product for its precision chromatography instrument and one of the necessary equipment for the laboratory.
1.Performance Parameters
1. The ultimate pressure of the small diaphragm vacuum pumps: the unit of the ultimate pressure of the pump is Pa, which refers to the lowest pressure that tends to be stable when the pump is equipped with a standard test cover at the inlet and works according to the specified conditions, and works normally without introducing gas.
2. The pumping rate of the small diaphragm vacuum pumps: the unit of the pumping rate is m3/s or l/s, which means that when the pump is equipped with a standard test cover and works according to the specified conditions, the flow rate of the gas flowing through the test cover is different from that in the test cover. The ratio of the equilibrium pressure measured at the designated position of the test hood. Referred to as the pumping speed of the pump.
3. The pumping capacity of the small diaphragm vacuum pumps The pumping capacity unit of the diaphragm pump is Pa m3/s or Pa l/s. Refers to the gas flow at the pump inlet.
4. The starting pressure of the small diaphragm vacuum pumps: The unit of the starting pressure of the diaphragm pump is Pa, which refers to the pressure when the pump starts without damage and has the function of pumping air.
5. The front stage pressure of the small diaphragm vacuum pumps: the front stage pressure unit of the diaphragm pump is Pa, which refers to the outlet pressure of the diaphragm pump whose exhaust pressure is lower than one atmospheric pressure.
6. The maximum pre-stage pressure of the diaphragm small diaphragm vacuum pumps: the unit of the maximum pre-stage pressure at the diaphragm pump port is Pa, which refers to the pre-stage pressure exceeding the pump damage.
7. The maximum working pressure of the diaphragm small diaphragm vacuum pumps: the unit of the maximum working pressure of the diaphragm pump is Pa, which refers to the inlet pressure corresponding to the maximum suction volume. Under this pressure, the pump can continue to work without deterioration or damage.
8. Compression ratio: refers to the ratio of the outlet pressure of the pump to the inlet pressure of a given gas.
9. The ratio of the actual pumping speed on the pumping channel area of Ho's coefficient pump to the theoretical pumping speed calculated by molecular effusion.
10. Pumping speed coefficient: the ratio of the actual pumping speed of the pump to the theoretical pumping speed calculated by molecular effusion at the pump inlet.
11. Reflux rate: The unit of the pump’s reflux rate is g/cm2.s. It refers to the mass flow rate of the pump flow per unit area of the pump inlet when the pump works under specified conditions.
12. Allowable amount of water vapor: The unit of allowable amount of water vapor is kg/h, which refers to the mass flow rate of water vapor that can be pumped by the gas ballast pump under normal environmental conditions when the pump is working continuously.
13. The maximum allowable water vapor inlet pressure: the unit of the maximum allowable water vapor inlet pressure is Pa. It refers to the highest inlet pressure of water vapor that can be pumped by the gas ballast pump during continuous operation under normal environmental conditions.
2.Applications
Small diaphragm vacuum pump is made of aluminum alloy die-casting, anti-corrosion spraying and plastic spraying. It is light and beautiful, and has a wide range of applications. The air chamber is treated with Teflon, which has a high degree of corrosion resistance and can meet the requirements of various working environments.
3.Features
1. No need for any working medium (no oil), no pollution, and at the same time, the gas exchange chamber of the machine is built with filter materials, thus ensuring the purity of the air.
2. New technologies and materials are used in the production process. It is easy to move and work smoothly, thus ensuring ideal vacuum degree and high air flow rate.
3. Adopt frictionless membrane body movement, no heat generation, no friction loss. The diaphragm is made of imported rubber, which is corrosion-resistant and has a long service life.
4. The body is designed with a self-cooling exhaust system, which can ensure 24-hour continuous operation
5. The pressure adjustable design can meet the vacuum degree and gas flow rate within a certain range.
6. The bearing adopts imported classic bearing, which has stable operation, low noise and high working efficiency.
4.Installation Steps
1. The small diaphragm vacuum pumps should be installed on a firm place on the ground, and there should be sufficient room around it for easy inspection, maintenance and maintenance.
2. The base of the small diaphragm vacuum pumps should keep the foundation level. It is recommended to pad shock-absorbing rubber at the four corners of the base or install it with bolts to ensure that the diaphragm vacuum pump runs smoothly and has little vibration.
3. The connecting pipe between the small diaphragm vacuum pump and the system should be sealed and reliable. For small diaphragm vacuum pumps, metal pipes can be used to connect the gasket with oil-resistant rubber. For small diaphragm vacuum pumps, vacuum hoses can be used for connection. The diameter of the pipe should not be smaller than the suction diameter of the diaphragm vacuum pump. And the pipeline is required to be short and have few elbows. (When welding the pipeline, the welding slag in the pipeline should be removed, and the welding slag is strictly prohibited from entering the cavity of the diaphragm vacuum pump.)
4. In the connecting pipeline, the user can install a valve and a vacuum gauge above the air inlet of the diaphragm vacuum pump to check the ultimate pressure of the diaphragm vacuum pump at any time.
5. Connect the power supply according to the regulations on the motor label, and install the ground wire and install a fuse and thermal relay of appropriate specifications.
6. When the small diaphragm vacuum pump is energized for trial operation, the motor belt must be removed to confirm that the diaphragm vacuum pump turns in the specified direction before it can be put into use, so as to prevent the diaphragm vacuum pump from reversing and injecting oil. (Turn to the direction indicated by the protective cover)
7. For small diaphragm vacuum pumps with cooling water, connect the cooling water as required.
8. If a solenoid valve is installed at the port of the diaphragm vacuum pump, the valve and the small diaphragm vacuum pump should act simultaneously.
9. When the exhaust gas from the small diaphragm vacuum pump affects the working environment, a pipeline can be installed at the exhaust port to lead away or an oil mist filter can be installed.
Conclusion
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