External pump vacuum packaging machine vacuum pump maintenance

People often put the packaged goods on the outside of the vacuum chamber to complete the vacuum packaging equipment called external vacuum packaging machine. Outlet vacuum packaging machines are designed primarily for vacuum packaging of larger packages. Different from the structure of the internal vacuum packaging machine, the external suction vacuum packaging machine uses the nozzle to absorb the vacuum after the air in the packaging bag, so the operation speed is fast, and it is not limited by the size of the packaged goods, and it can be guaranteed to be packaged. The beauty of the goods.

How to improve the life of the external vacuum packaging machine? Everything starts from the vacuum pump. As the main part of the external pumping vacuum packaging machine, the maintenance of the vacuum pump is particularly important. The following is a detailed description of how to maintain the vacuum pump by casting Heng Xiaobian.

The vacuum pump is a clean vacuum pump that can be operated without oil lubrication and will not pollute the environment and the processed product. Suitable for vacuum drying, vacuum concentration operations, can be widely used in pharmaceutical, chemical, food, medical equipment, printing, book binding, packaging, plastic injection and laboratory and other fields.

Second, the scope of application:

1. Suitable for vacuum pumping of closed systems. Such as vacuum packaging, vacuum forming, vacuum suction.

2, the inlet pressure range: 100Pa ~ 100000Pa, beyond this range of work vacuum pump exhaust port will have an oil mist. Working environment temperature and suction gas temperature should be between 5 °C ~ 40 °C.

3, vacuum pump can not remove water or other liquids. Do not remove explosive, flammable, oxygen-rich, corrosive gases.

4, the general supply of the motor is not explosion-proof, such as the requirements of explosion or other special requirements when the motor must meet the relevant standards.

Third, daily maintenance and maintenance:

1. Check the position of oil level frequently. If it does not meet the requirements, it must be adjusted to meet the requirements. When operating with a vacuum pump, the oil level is subject to the center of the oil standard.

2. Regularly inspect the condition of the oil and discover that the oil should be replaced with new oil in a timely manner to ensure that the vacuum pump is working properly.

3, the oil change period according to the actual conditions of use and whether it can meet the performance requirements, etc., decided by the user's discretion. When a new vacuum pump is generally used to remove clean and dry gas, it is recommended to change the oil once in about 100 hours of operation. After the ferrous metal powder is not visible in the oil, the oil change period can be appropriately extended later.

4. Under normal circumstances, the vacuum pump shall be overhauled after 2000 hours of operation to check the aging degree of the silicone rubber seal, check whether the exhaust valve piece is cracked, and clean the dirt deposited on the valve plate and the exhaust valve seat. Clean the parts of the entire vacuum pump cavity, such as rotors, rotors, springs, etc. It is usually cleaned with gasoline and dried. After cleaning the rubber parts, dry it with a dry cloth. Clean the assembly with care and bruises.

5. Conditionally clean up the pipes to ensure that the pipes are unblocked.

6, after the re-assembly should be trial run, generally required to run 2 hours and change the oil twice, due to cleaning in the vacuum pump will leave a certain amount of volatile matter, to be normal operation, and then into normal work.

7, check the vacuum pump pipe and joints have no loosening phenomenon. Turn the vacuum pump by hand to see if the vacuum pump is flexible.

8. Add bearing lubrication oil to the bearing body. Observe that the oil level should be at the centerline of the oil mark. The oil should be replaced or supplemented in time.

9. Unscrew the water diversion plug of the pump body of the vacuum pump and inject the water (or feed the slurry).

10. Close the gate valve, outlet pressure gauge and imported vacuum gauge of the outlet pipe.

11. Move the motor to see if the motor steering is correct.

12. Start the motor. When the vacuum pump is running normally, open the outlet pressure gauge and the inlet vacuum pump. After seeing the proper pressure, gradually open the gate valve and check the motor load condition.

13. Try to control the flow rate and lift of the vacuum pump within the range indicated on the label to ensure that the vacuum pump operates at the highest efficiency point in order to obtain maximum energy savings.

14. During the operation of the vacuum pump, the bearing temperature must not exceed the ambient temperature 35C, and the maximum temperature must not exceed 80C.

15. If abnormal sound is found in the vacuum pump, stop immediately to check the cause.

16. When the vacuum pump is to be stopped, close the gate valve and pressure gauge first, and then stop the motor.

17. In the first month of working, the vacuum pump shall be replaced with oil after 100 hours, and after each 500 hours, oil shall be changed once.

18. Always adjust the packing glands to ensure that the drip-out condition in the packing room is normal.

19. Regularly inspect the bushings for wear, and replace them when they are worn out.

20. When the vacuum pump is used during the winter season, after parking, it is necessary to screw the plug of the lower part of the pump body to unscrew the medium. Prevent freezing cracks.

21. When the vacuum pump is deactivated for a long period of time, all the pumps need to be disassembled, the water must be wiped dry, and the rotating parts and joints should be greased and stored properly.