Boot what check and dry screw vacuum pump - ready to work

a, dry screw vacuum pump inspection and prepare before starting the

1. Check vacuum pump parts is complete;

2。 Check the oil level at different oil level observation window of the, and confirm the oil level in the oil level 3 mm above the center line of the observation window.

3。 Check and confirm the state of the vacuum valve;

。 Process of inlet valve closed.

b。 Entrance to the filter drain valve closed.

c。 Export pipeline flow, the export pipeline drain valve open.

　　d. Cooling water inlet pipe and outlet piping valve opens.

nitrogen line valve is opened, the purge gas pressure of 0. 5, nitrogen gas sealing pressure of 3 bar, purge valve is closed.

the second boot operation steps, dry screw vacuum pump

1. Contact the site confirm can launch control, through the action bar start button to start the vacuum pump;

2。 Close the outlet pipe drain valve;

3。 Check or adjust the nitrogen sealed gas flow, and confirm the flow rate of 2. 5 - — 3 litres/minute;

4。 Open the purification valve, confirming flow meter flow is set to the maximum. Purging 5 - — After 10 minutes, close the purge valve;

5。 Open the inlet valve and access system;

6。 During the running of vacuum pump, observe the body temperature. Can control water temperature control valve to control the temperature, When the water temperature regulator located at index 0, the largest water when in its scale 5 minimum) 。 Temperature requirements as far as possible control in 50 - — 75 ℃ to ensure that does not exceed 80 ℃.

three stop operation steps, dry screw vacuum pump

1. The inlet valve closing process, cut off the system;

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

3。 Through the field operation column stop button to stop;

4。 Close the nitrogen valve;

5。 The valve closed cooling water; If long time not to use during the winter, should from the body and the cooling water pipes, to prevent freezing.

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

4, dry screw vacuum water pump installation note

1. Before the first start of screw pump, mud collecting tank, mud suction pipes, etc. Should be clean, in order to prevent stone, concrete, and other metal objects into falling from buildings, and crushed or fall into the pump. Before start the pump at ordinary times, should open the valve of imports and exports, after confirm the pipe flow, pump to run. Tours of inspection, operation of the pump should pay attention to whether the bolt looseness, excessive vibration of pump and pipeline, filling part of the drop of water is within the normal range, the temperature of the bearing and gear reducer is too high, the moving parts to see if there is abnormal sound.

2。 As screw pump, the conveying medium also have the effect of cooling and lubrication in the water pump rotor, so do not allow the idle, otherwise the stator and the rotor will be due to the friction and heat damage. Before the first use of the pump, fluid or lubricants, such as glycerine aqueous solution or dilute sodium silicate, detergents, etc. Should be injected into the suction side of the pump. In order to prevent the pump in the friction state during the initial startup. In the sewage treatment industry, may sometimes happen big impurities ( Such as packaging, etc. ) The sludge can jam or scum suction pipe. Should avoid all kinds of phenomena during the day. This kind of accident, should immediately stop cleaning pump, in order to protect the safe operation of the pump.

3。 The pump and motor shaft degrees are accurate is the first condition of balance of pump operation. Although pump has made accurate adjustment before they go out, but the base installation and improper will lead to the base deformation, cause the alignment is beyond tolerance. Therefore, in the first operation before or after major repair, should check the alignment.

4。 Base in all parts of the pump on bolts and bolt. Run, foundation bolt looseness will cause the body vibration, water pump body movement, the phenomenon such as pipeline rupture. Therefore, frequent tight base bolt is very necessary, bolts on the pump body everywhere. At work, must check the motor and reducer, reducer and suction chamber, suction chamber between the stator and bolt is firm.

these are share before the start of dry screw vacuum pump inspection and preparation work, hope to be of help to operate the equipment in the future.