Home self-priming pump is a certain self-priming capacity, can make the pump in the high place to the low liquid level or liquid suction pump chamber thrown through the impeller high-speed liquid to reach the delivery and promotion of liquid purposes. Home self-priming pump sometimes unqualified products or long service life, decreased self-absorption capacity, we can not achieve the purpose, however, self-priming pump is actually self-priming different ways can be divided into external mixed self-priming Pump, mixed self-priming pump and vacuum suction pump with self-priming pump and other structures which are powered by the pump itself.
  
The following describes several ways to enhance the life of self-priming pumps to enhance self-absorption capacity:
  
The first approach is also the simplest way: self-priming sewage pump set in the pump suction pipe vacuum pump , the pump starts before the vacuum pump to start, so that the pump suction pipe filled with water, to ensure that the pump automatically, quickly started. This kind of water absorption method needs perfect automatic control system to ensure normal work.
  
The second method is relatively simple as compared to the following: Self-priming pumps reduce the water pipe bend, drop height and horizontal spacing.
  
The third method is a little cumbersome, but it is also very good to use: self-priming pump set suction pump before the pump. In this way, a water suction tank needs to be set on the water suction pipe of the water pump. Before the first operation of the water pump, the tank should be manually filled with water. After the first operation is stopped, since the height of the water inlet pipe of the water suction tank is higher than the water level in the pipe, The water level in the tank is lower than the water level in the tank. The water in the tank will not flow back into the water tank. Therefore, a certain amount of water can be stored in the water tank and the height of the water outlet pipe of the water tank Lower than the tube surface height, it can ensure that the pump suction pipe full of water, after the pump and then run, the water tank is pumped by the pump, the tank thrown negative pressure, water in the pool under the action of atmospheric pressure Added to the suction tank, through the sump tank inside.
  
The last option, self-priming sewage pump suction pipe end installed suction bottom valve . Suction valve is actually a check valve , which ensures that water can only enter the suction pipe from the pool and can not reverse, so if the suction pipe filled with water, although the pump shaft elevation above the working level of the pool, but because there is suction The role of the end of the valve, the water pipe will not flow into the pool, the suction pipe has been filled with water to ensure that the pump can automatically and quickly start.

AC Explosion-proof Motors Heat Exchanger

Features:

Aluminum bar plate fin structure, the use of high performance Exdâ… or Exdâ…¡explosion-proof motor and high-strength fan leaves, can achieve the best explosion-proof requirements.

Application:

Hydraulic system return line, lubrication system, independent cooling circuit cooling.
Coal mining machinery, chemical machinery, oil and gas field machinery, such as hydraulic power station.


Technical Parameters:

Different voltage when there are different power consumption, the table only AC380V / 50Hz as an example.
Fan motor standard for the suction type, protection class IP54, IP55, IP56, IP65, F-class insulation, in line with national Ex and international CE standards.
The noise value is a value at a distance of 1 m.

Please specify the application area and explosion-proof grade (such as Exdâ… BT4 or Exdâ…¡ CT4).

Oil Pump AC Fan Bar Plate(Plate-fin) Heat Exchanger

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Xinxiang Zhenhua Radiator Co., Ltd. , https://www.thermal-manage.com