Piston vacuum pump structure

What is a piston vacuum pump:

The piston vacuum pump is one of the vacuum equipment to remove the general gas or contain a small amount of condensable vapor. It is used in vacuum smelting, vacuum drying, vacuum impregnation and other vacuum operations. It can be used alone or as a front-stage pump of other high vacuum pumps, but it is not used for pumping from one container to another as a conveying pump. When exorbitant, explosive, corrosive to black metal, chemical reaction to vacuum pump oil, water, and dust are added, the equipment should be added.

 

The structure and working principle of the piston vacuum pump:

The shape and structure of various vacuum pumps of piston vacuum pumps are basically the same. The pump is driven by a motor through a triangular belt to the pump rotor. The motor is fixed on the pump body with the motor plate.

piston vacuum pump is composed of pump body and eccentrically rotating parts of the sliding valve, semi-circular sliding valve guide rail, exhaust valve, shaft, etc. Figure 1 is the working principle diagram.

There is a slide valve sleeve in the piston vacuum pump. The eccentric wheel is fitted with an eccentric wheel. The eccentric wheel is fixed on the shaft, and the slide valve plate is mounted on the slide valve sleeve. It can slide up and down in the semi-circular slide guide rail and swing right and left, so the pump body is separated into the A and B two rooms by the slide valve and the slide valve plate. During the operation of the pump, the volume of A and B two chambers change periodically, thus completing the inspiratory and exhausting process.

Performance parameter table of piston vacuum pump:

H Series technical data(50hz) :

Model		H-70	H-150	H-180	H-200	H-230	H-300
Pumping speed (L/S)		70	150	180	200	230	300
Ultimate pressure (Pa)		1	1	1	1	1	1
Pump rotary speed (rpm)		500	500	380	410	450	450
Suitable motor	Power (KW)	5.5	15	15	15	18.5	22
	Rotary speed(rpm)	1440	1440	1460	1460	1470	1470
	Model	Y132S-4	Y132M-4	Y160L-4	Y160L-4	Y180M-4	Y180L-4
Max. inlet pressure (Pa)				1.3X104
Max. Vapor Productivity(kg/hr.)				About 8.4
Cooling waterconsumption (kg/h)		150	200	450	450	450	700
Lubricated oil	Model			1# vacuum pump oil
	Capacity (kg)	18	40	45	45	45	63
Dimension	Inlet（mm）	80	100	160	160	160	160
	Outlet（mm）	50	80	100	100	100	100
Length x width x height (mm)		650 X 630 X 1200	1010 X 680 X 1356	1140 X 940 X 1270	1140 X 940 X 1270	1140 X 940 X 1325	1140 X 1160 X 1325
Total weight (kg)		525	970	1155	1155	1155	1525

Model		H-150G	H-150F	H-200F	H-300F
Pumping speed (L/S)		150	150	200	300
Ultimate pressure (Pa)		1	1	1	1
Pump rotary speed (rpm)		500	450	410	450
Suitable motor	Power (KW)	7.5	11	15	22
	Rotary speed(rpm)	1440	1460	1460	1470
	Model	Y132M-4	Y160M-4	Y160L-4	Y180L-4
Max. inlet pressure (Pa)		1.3X104
Max. Vapor Productivity (kg/hr.)		About 8.4
Cooling water consumption (kg/h)		200	200	450	700
Lubricated oil	Model	1# vacuum pump oil
	Capacity (kg)	40	35	55	80
Dimension	Inlet（mm）	100	100	160	160
	Outlet（mm）	80	100	100	100
Length x width x height (mm)		1010 X 680 X 1356	1305 X 825 X 1350	1300 X 925 X 1450	1300 X 1150 X 1465
Total weight (kg)		970	905	1255	1650

Use of piston vacuum pump:

Widely used in aerospace, aviation, atomic, petroleum, chemical, pharmaceutical, electrical, ceramics, smelting, new materials, vacuum heat treatment, vacuum coating and other industries.

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