Reciprocating vacuum pump

Reciprocating vacuum pump is a common vacuum pump equipment, belonging to dry vacuum pump, mainly relying on the reciprocating motion of the piston in the cylinder to suck in and discharge gas. This is just a brief description of the working principle of the device. To be honest, it is very complex. The editor has simplified it and hopes it will be helpful to you.

Under the driving force of the electric motor, the reciprocating vacuum pump uses the crank connecting rod mechanism to make the cylinder piston move towards the ironing direction; When the piston moves from the left end to the right end inside the cylinder, due to the continuous increase in the volume of the left chamber of the cylinder, the density of the gas inside the cylinder decreases continuously, forming a pumping process; At this point, the gas in the container enters the left chamber of the pump body through the suction valve: when the piston reaches the right end, the cylinder is filled with gas; When the piston moves from the right end to the left end, the suction valve closes and the gas in the left cylinder is gradually compressed; When the pressure inside the left cylinder reaches or slightly exceeds one atmosphere, the exhaust valve is opened and the gas is discharged from the outside atmosphere, thus completing a working cycle. This process repeats until a stable equilibrium pressure is reached in the pumped container.

The compression ratio of reciprocating vacuum pumps is very high, for example, when reaching a vacuum degree of 95%, the pressure is 5kPa. And the exhaust pressure is Il2kPa. So, when there is residual gas in the clearance, it will have a significant impact on the production capacity of the vacuum pump. For this reason, reciprocating vacuum pumps must adopt effective devices to reduce the impact of clearance in structure seven.

Simply put, the working principle of reciprocating vacuum pumps is the process of inhaling and expelling gases, which enables the operation of the equipment. This unique operating mode has made the product widely used in many industries.