The operation method of dry screw vacuum pump _

today focuses on dry screw vacuum pump operation method, boot operation steps, stop operation steps. In the mastery of dry screw vacuum water pump before these steps, we need more knowledge of screw vacuum pump. Below small make up to introduce to everyone.

1. Check and prepare before starting the

1) check whether the vacuum pump parts is complete;

2. Check the oil level in different oil level sight glasses, confirm the oil level in oil level sight glasses on the practice about 3 mm;

check vacuum unit (3) of each valve state;

a, process the inlet valve closing

b, the filter drain valve closed entrance?

c, export pipeline flow, outlet pipe drain valve open

d, cooling water inlet pipe and the export pipeline valve open

e, nitrogen line valve is opened, the scavenging air pressure to zero. 5 bar, nitrogen gas sealing pressure of 3 bar, purge valve closed

1, field contact control, confirmed that can start, start button to start the vacuum pump by site operation column;

2, close the drain valve outlet pipe;

3, check, or adjust the nitrogen gas flow, confirm flow in 2. 5 - — 3 l / min;

4, open the purge valve, flow to maximum confirm flowmeter, purging 5 - — After 10 minutes, close the purge valve;

5, the inlet valve open process, cut into the system;

6, in the process of the vacuum water pump operation, observe the body temperature, water can be adjusted by temperature control valve to control the temperature, Water temperature regulator in the zero calibration is the largest, is located in the 5 scale water minimum) For temperature control in the 50 - as far as possible — 75 ℃ to ensure does not exceed 80 ℃.

1, the inlet valve closing process, cut out of the system;

2, open the purge valve, purging 20 - — After 40 minutes, close the purge valve.

3, column by site operation stop button to stop;

4, close the nitrogen valve;

5, closed cooling water valve; As winter long time, need to row net with cooling water in the body and the pipeline anti-freezing;

6, open the drain valve outlet pipe and inlet filter drain valve and check for a condensate.