Maintenance of 2XZ rotary vane vacuum pump
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2XZ rotary vane vacuum pump is a two-stage high-speed direct-coupled rotary vane vacuum pump. It has a rotor that is eccentrically mounted in the pump chamber and a rotary vane in the rotor slot. When the rotor drives the rotary vane to rotate, the rotary vane is in close contact with the cavity wall, separating the inlet and exhaust ports, and the volume of the intake manifold is periodically expanded to inhale, and the volume of the exhaust chamber is periodically reduced. Compress the gas and push the exhaust valve exhaust to obtain a vacuum. Figure 1 is a schematic diagram of the working principle of a single-stage pump. The two stages are two single stages connected in series.
The 2XZ rotary vane vacuum pump is equipped with a gas ballast valve, which has the function of prolonging the pump oil usage time and preventing the pump oil from mixing.
The 2XZ rotary vane vacuum pump has the advantages of small size, light weight, low noise and easy starting. In addition, there are measures to prevent oil return (2XZ-8) and measures to prevent oil spills from contaminating the site.
1. 2XZ rotary vane vacuum pump is the basic equipment for obtaining vacuum. It can be used alone or as a foreline pump and pre-pumping pump for various high vacuum systems.
2. The pump inlet is continuously open to the atmosphere and must not exceed three minutes.
3, the pump is not suitable for the removal of gases that are corrosive to metals, chemically reactive to the pump oil, containing particulate dust, and the body contains too much oxygen, explosive gas.
4. The pump can be used as a compression pump or a transfer pump.
5, the working environment of the pump: the temperature range of 5 ° C -40 ° C, the relative temperature is not more than 90%, the inlet pressure is less than 1333Pa allows long-term continuous operation.
6. When connecting the power supply, wire according to the motor label. Pay attention to the direction of rotation of the motor and the direction of the arrow on the support.
7. The pipe of the continuous pumping vessel shall have a diameter not less than the diameter of the inlet of the pump, and the pipe shall be short and have fewer elbows, and at the same time pay attention to the leakage of the pipe.
8. Focus on the oil level before each start, and it is advisable to fill the oil to 4/5 of the diameter of the oil mark glass when stopping the pump.
9, with pump oil using clean SY1634-701 vacuum pump oil.
10, 2XZ rotary vane vacuum pump can be started once in the atmosphere or any vacuum. If the XZ-1 single-stage pump is difficult to start, the intake manifold cap can be removed and then put into operation.
Second, 2XZ rotary vane vacuum pump structure diagram:
Third, 2XZ rotary vane vacuum pump parameters performance:
Model pumping speed (L/S) ultimate vacuum (Pa) speed (rpm) working voltage (V) motor power (kw) inlet diameter (mm) oil consumption (L) pump oil temperature rise (°C) dimensions Total weight (kg) gas town gas-opening length and width XZ-0.50.51014002200.09φ70.18>402251102207.2XZ-111014002200.12φ100.25>402751102207.52XZ-0.250.256.7×10-12200.12φ100.3>40440125224112XZ-0.50.56.7 ×10-21.3314002200.18φ130.42445125256132XZ-116.7×10-21.3314002200.25φ190.4>40445125256142XZ-226.7×10-21.331400380/2200.37φ190.48478148277202XZ-446.7×10-21.331400380/2200.55φ300.55518148277222XZ-886.7×10-21.3314003801.1φ300 .7>50575185315552XZ-15156.7×10-21.3314003801.5φ400.8>7057818531555
Four, 2XZ rotary vane vacuum pump failure and its elimination method:
1, 2XZ rotary vane vacuum pump limit vacuum is not high and its elimination (1) oil level is too low, there is a large exhaust sound, you can add clean vacuum pump oil.
(2) The pump oil is contaminated by condensable steam, which can be cleaned or replaced with new oil.
(3) 2XZ rotary vane vacuum pump port external piping, container, test instrument piping, joints, etc. When there is a large leak, there is a large exhaust sound, and the exhaust port has a gas discharge, and the leaking portion should be found and eliminated.
(4) The rubber seal diagram of the inlet nozzle or gas ballast valve is improperly assembled, damaged or aged, and should be adjusted or replaced.
(5) The 2XZ rotary vane vacuum pump is plugged into the oil nozzle of the oil nozzle, and can be pulled out into the oil nozzle to clear the oil hole.
(6) The vacuum system is seriously polluted, including containers and pipes, and should be cleaned.
(7) The 2XZ rotary vane vacuum pump rotor spring is broken and should be replaced.
(8) The rotary vane, pump body or pump cover is worn out. If the clearance is too large, it should be inspected, trimmed or exchanged.
(9) If the pump temperature is too high, ventilation and cooling should be improved. If the temperature of the pumped gas is too high, it should be cooled before entering the pump.
2, 2XZ rotary vane vacuum pump injection (1) oil level is too high, you can enter the excess oil.
(2) Pump oil or debris in the fog reducer should be removed.
3, 2XZ rotary vane vacuum pump oil leakage (1) oil drain screw plug, fuel tank gasket or improper assembly, screw tightening;
(2) The oil mark is not tightened, and the plexiglass is overheated;
(3) The connection between the 2XZ rotary vane vacuum pump body parts and the support 挚 gasket is not well padded; the oil package is improperly fitted or worn; it should be adjusted or replaced.
4, 2XZ rotary vane vacuum pump noise (1) the rotary vane spring is broken, the spring can be changed.
(2) There are burrs, dirt or deformation, and there are obstacles in operation. The grinding and cleaning should be checked.
(3) Bearing wear and parts wear. It should be trimmed or replaced.
(4) The motor is out of order and should be inspected.
5, 2XZ rotary vane vacuum pump return oil (1) check valve is not closed, after stopping the pump, the oil level will drop quickly, can be opened again and then stopped, observe changes or open inspection.
(2) The oil package in the two pump covers is improperly fitted or worn and can be exchanged.
(3) The pump cover or pump body is not flat and can be trimmed.
(4) The exhaust valve piece is damaged and should be exchanged.
Note: Check the ultimate vacuum of the pump, which is based on a compressed mercury vacuum gauge.
Five, 2XZ rotary vane vacuum pump notes:
Solemnly stated: The company is not responsible for personal injury and property damage caused by violation of the above regulations.
Direct-coupled vacuum pumps are strictly prohibited to remove flammable, explosive and toxic gases;
Direct-coupled vacuum pumps shall not remove gases that are corrosive to metals and chemically reactive with pump oils;
Direct-coupled vacuum pumps shall not remove gases containing particulate dust and large amounts of water vapor;
The temperature of the pumped gas shall not exceed 80 ° C, and the ambient temperature shall be -5 ° C - 60 ° C;
Direct-coupled vacuum pumps shall not be used as compression pumps and transfer pumps;
Direct-coupled vacuum pumps are strictly prohibited from running without oil;
It is strictly forbidden to block the exhaust port when the pump is running;
1 direct-connected vacuum pump uses a voltage of 192-248V, 50Hz socket must be grounded;
2 When unplugging the power supply, be sure to hold the plug, do not grab the power cord to pull the address;
3 Direct-connected vacuum pump Do not place heavy objects on the power cord, and do not let the power cord be squeezed;
4 Direct-connected vacuum pumps should not use broken plugs and sockets;
5 Direct-connected vacuum pump Do not plug or unplug the power plug with wet hands;
6 Direct-connected vacuum pump Do not plug or unplug the power plug and push the switch in the place where there is gas leakage.
6. Installation of 2XZ rotary vane vacuum pump:
When using the 12XZ rotary vane vacuum pump, it should be placed horizontally in a dry, ventilated and clean place. The distance from the surrounding area is more than 2cm, and the distance between the front and rear ends is not less than 5cm. When installing on the equipment, the windshield shell should be ensured. Normal air intake at the end;
2Installation on the supporting machine; remove the rubber feet under the bottom plate and connect with ST4.2 self-tapping screws. If there is special installation requirements for the direct-connected vacuum pump, please contact the factory;
3 air inlet can be connected according to the thread requirement of the air inlet, or can be inserted by a leather tube;
4 If the gas discharged from the direct-coupled vacuum pump has an impact on human health or the working environment, a pipe may be connected to the exhaust port to lead out the workplace or be treated environmentally;
5 If there is special need, install a solenoid valve in the inlet of the pump;
6 If the extracted gas contains a large amount of water vapor, the temperature is too high, and contains dust, etc., a corresponding device such as a cooler or a filter should be added to the inlet pipe to avoid affecting the normal use of the pump.
7. Handling failure of 2XZ rotary vane vacuum pump:
Fault phenomenon 2XZ rotary vane vacuum pump failure cause 2XZ rotary vane vacuum pump elimination method Low vacuum 1. Insufficient oil supply to oil mark center line 2, pump oil emulsification, unclean replacement new oil 3, pump oil inlet hole Clogged or insufficient oil supply to clean the oil inlet hole, clean the filter screen 4, the pump connection pipe container leaks and check the connection pipe container to prevent leakage 5. The pump is improperly checked for the size of the pumped container, recalculating the pump 6, the pump is used for too long The wear of the parts causes the gap to increase. The front and rear stator planes of the flat grinding, cleaning and drying adjust the eccentric clearance of the top of the rotor, reassemble the oil leakage, the oil seal is damaged, the oil seal is replaced, the oil tank connection is loose or damaged, and the O-ring is replaced. Fuel injection 1, excessive oil discharge to the oil level line 2, excessive pressure when the inlet pressure is too high for long-term use of the appropriate large pumping speed pump is difficult to start 1, the oil temperature is too low, the air inlet is open to the atmosphere, intermittently start the motor Or pump oil heating 2, motor or power supply fault check and repair 3, foreign objects fall into the pump to check to eliminate the maintenance of eight, 2XZ rotary vane vacuum pump:
1 Keep the 2XZ rotary vane vacuum pump clean to prevent debris from entering the pump;
2 Maintain the oil level of the 2XZ rotary vane vacuum pump and strictly prohibit oil-free operation;
3 Pay attention to the cleaning of the 2XZ rotary vane vacuum pump oil. If the pump oil becomes dirty, turbid, enters moisture or other volatile substances and affects the ultimate vacuum, the pump oil should be replaced in time. When replacing the new oil, first open the pump for 30 minutes to make the oil thinner, stop the pump, drain the oil from the oil drain hole, and then open the air inlet for 1-2 minutes, during which a small amount of clean pump oil can be added from the air inlet. In order to replace the oil in the pump chamber. Repeat several times to confirm that the 2XZ rotary vane vacuum pump has been cleaned, install the oil drain screw plug, and then inject the clean pump oil from the oil filler hole to the oil level line;
4 When not in use for a long time, the 2XZ rotary vane vacuum pump should be covered with a good inlet and exhaust cap, placed in a dry place, pay attention to moisture and rust;
5 If you need to repair and repair, you must be carried out by a professional who has some experience in repairing the pump, or with the company.
Note: The relevant provisions of this instruction manual for pump oil do not apply to the oil-free vacuum pump series.