Application of screw vacuum pump
Date: 2020-05-29 10:20 10:20, click: Author: screw vacuum pump.
Screw vacuum pump It is a commonly used equipment for vacuum pumping. It is necessary to use the operation strictly according to the operation rules. If there are any problems in the process, the vacuum pump will be used normally. Screw vacuum pump What are the methods used?
The screw vacuum pump must be installed on the horizontal foundation, and the pump port should be protected during the installation stage of the vacuum pump to avoid welding slag or other debris entering the pump. When the pump starts running for 100 hours, the starting filter screen must be installed at the suction port of the pump to prevent impurities or no clean welding slag from being sucked into the pump, resulting in the screw rotor clamping or even the whole pump. Damage. If there is dust or particulates in the inhalation gas, a dust remover or filter must be installed before the suction port. The pipeline should choose a pipeline equivalent to the diameter of the suction and exhaust port of the vacuum pump. It can not be changed. The smaller the suction pipe diameter will limit the pumping capacity of the pump, and the smaller the exhaust pipe diameter will cause the phenomenon of exhaust obstruction and pressure holding, which will lead to leakage of the seal, overload of the motor and even the failure of the whole pump. The vacuum pump should carefully check the coupling before commissioning, and if necessary, readjust it. In addition to installing the intake valve, vacuum suction valve should be installed at the suction port of the vacuum pump to avoid sudden shutdown or other failure shutdown, resulting in reverse rotation of the screw rotor caused by vacuum suction in the system, resulting in unnecessary losses. Before the start of the vacuum pump, it is necessary to make a simple barring to ensure that there is no rust or stuck. Then turn on the cooling water inlet and outlet valve and move the motor to make sure that the motor is turned right and start the vacuum pump again.
The cooling water of the screw vacuum pump is used to cool the front and rear end covers and the jacket of the pump body. The cooling water pressure is generally about 1.5kg, not exceeding 2kg, so as to prevent the seal of the pump from being broken by water pressure. The lubrication of the screw vacuum pump is divided into driving end and non driving end. The gear box of the driving end is lubricated with No. 100 vacuum pump oil, and the non driven end adopts high temperature grease. Lubrication is very important. It is necessary to check the oil quantity and color regularly according to the instructions, and find out the abnormal solution in time. After the new pump runs 500h, new oil should be replaced. The intake temperature of screw vacuum pump should not be higher than 50 C, the outlet temperature is 150 C, the pump body temperature is 90 C, the fuel tank temperature is 70 C, the suction end bearing temperature is 120 C. If the operation is stopped for a long time, the valve on the main road should be closed before shutting down. The nitrogen will be continuously cleaned for 20~30 minutes through the purging cleaning port, then cleaned by inhalation of diesel oil and then cleaned. If the pump needs to be stopped for a long time in the winter, it is necessary to drain the cooling water in the pump so as not to cause the frost crack of the pump body at low temperature.
The above is the use of screw vacuum pump method, I hope you understand that the use of any equipment can not be separated from reasonable maintenance, in order to achieve a good production efficiency, I hope this introduction will help you, you can pay attention to our website, we will regularly update website articles.