Working principle of vacuum assisted self priming pump

Working principle of vacuum self-priming pump, working principle of vacuum self-priming pump, principle of vacuum assisted self-priming pump
1、 Product overview of vacuum self-priming pump
The vacuum self-priming pump can be divided into two types: the semi-automatic vacuum self-priming pump and the full-automatic vacuum self-priming pump. The semi-automatic vacuum auxiliary self-priming pump is equipped with an automatic control cabinet, while the self-priming pump is not equipped with an automatic control cabinet. The self-priming pump of the semi-automatic vacuum auxiliary self-priming pump can also be divided into two types: the self-priming pump that can idle and the self-priming pump that can not idle.

2、 Working principle of vacuum self-priming pump
1. Working principle of semi-automatic vacuum self-priming pump
The semi-automatic vacuum self-priming pump only uses the automatic controller of the vacuum pump. If the self-priming pump can't idle, a part of liquid (submerged to the mechanical seal, i.e. the pump shaft) must be added into the pump cavity before use. After adding the liquid, the self-priming pump and the vacuum pump can be started at the same time. If it is difficult to add water, the vacuum pump can also be used Do not connect the power supply of the pump from the terminal box of the self-priming pump motor, separate the power supply of the two pumps, start the vacuum pump alone first, and then start the self-priming pump when the vacuum pump draws the water into the self-priming pump. The semi-automatic vacuum self-priming pump is basically the self-priming sewage pump or self-priming centrifugal pump with a power of more than 15kw, because the series of self-priming pump products cannot be idle, and the high-power pump is selected Soft start is recommended for the control cabinet of self-priming pump.

2. Working principle of semi-automatic vacuum self-priming pump
The semi-automatic self-priming pump that can run idle has the advantage that the self-priming pump products with less than 22KW of small power and no need to add water for secondary use can be directly started. Therefore, the power supply of vacuum pump controller is directly connected from the self-priming pump motor junction box. As long as the self-priming pump is powered on, the vacuum pump and the self-priming pump will run at the same time, and the vacuum pump will automatically stop when the self-priming pump comes out of water. For the vacuum self-priming pump with high power over 22KW, it should be noted that the vacuum pump cannot be started by depressurization and must be started directly, so the vacuum pump wiring must be separated from the self-priming pump wiring, and the self-priming pump must be started by depressurization. After determining the positive and negative rotation of the two pumps in use, only the self-priming pump and the vacuum pump need to be started at the same time or first Then start the self-priming pump and put it into use. In use, the vacuum pump controller should remember to press the automatic button first and then press the start button, so that the vacuum pump control system is the automatic mode.

3. Working principle of automatic vacuum self-priming pump
Before leaving the factory, the automatic vacuum self-priming pump control cabinet and the relevant signal lines of the vacuum pump control cabinet are connected in series
The working principle of the full-automatic vacuum self-priming pump is that the vacuum pump starts automatically, when the water is pumped into the steam water separation tank on the top of the self-priming pump, after the floating ball of the liquid level sensor set inside floats up, it will automatically feed back to the controller, and the controller will automatically stop the vacuum pump after receiving the signal, and at the same time, the control cabinet of the self-priming pump will also feed back the signal to start it If the water level of the self-priming pump drops or air enters, the vacuum pump will start and stop automatically. If the water at the inlet of the self-priming pump is drained, the self-priming pump will stop automatically to prevent the self-priming pump from burning the mechanical seal at idle.

Ningbo Sanxin Pump Co., Ltd