CN201739178U

CN201739178U - Novel vacuum pump

Info

Publication number: CN201739178U
Application number: CN2010201963545U
Authority: CN
Inventors: 易先杰; 李彬; 孙海瑞; 张成龙
Original assignee: ZIBO TESHIDE VACUUM EQUIPMENT TECHNOLOGY CO LTD
Current assignee: ZIBO TESHIDE VACUUM EQUIPMENT TECHNOLOGY CO LTD
Priority date: 2010-05-11
Filing date: 2010-05-11
Publication date: 2011-02-09
Anticipated expiration: 2020-05-11

Abstract

The utility model belongs to the technical field of pumps, and relates to a novel vacuum pump. The novel vacuum pump comprises a motor 1, a housing 2, a skeleton oil seal 3, a main shaft 4, a rotor 5, machine oil 6, bearings 7, grease 8, a polytetrafluoroethylene cushion 9, an air bleeding chamber 10, a one-way valve 11, a piston ring 12 and an exhaust port 13; the motor drives the main shaft to rotate; the rotor is connected with the main shaft; the skeleton oil seal, the rotor, the machine oil, the bearings, the grease, the polytetrafluoroethylene cushion, the air bleeding chamber, the one-way valve and the piston ring are positioned between the main shaft and the housing; the machine oil is filled between the housing and the skeleton oil seal, and the bearings are positioned in the housing and the skeleton oil seal; the grease is filled between the skeleton oil seal and the polytetrafluoroethylene cushion; the air bleeding chamber is positioned between the polytetrafluoroethylene cushion and the piston ring; and the one-way valve is positioned in the air bleeding chamber and is connected with the exhaust port positioned on the housing. The novel vacuum pump prevents the machine oil slowly seeps from the oil seal to enter a vacuum pump chamber, so that the framework and the oil seal are fully lubricated, the suction rate of the vacuum pump is improved, the air exhaust time is shortened, the temperature of the vacuum pump chamber is reduced, and the service lives of the framework, the oil seal and the main shaft are prolonged at the same time.

Description

Novel evacuated pump

Technical field

The invention belongs to the pump technical field, relate to a kind of novel evacuated pump.

Background technique

There are short problem of life-span in present conventional vacuum pump skeleton, oil sealing, adopt the lubricated machine oil of general mode of structure easily to take place to ooze slowly from oil sealing, enter the vacuum pump pump chamber, thereby it are insufficient to cause skeleton, oil sealing to lubricate, and cause skeleton, oil sealing to damage; Cause vacuum pump pump chamber gas and machine oil to mix on the other hand, promptly increased the difficulty of vacuum pump suction, prolong period of exhaust, cause simultaneously vacuum pump pump chamber temperature to raise again, vacuum pump pump chamber temperature raises and has strengthened skeleton conversely, oil sealing is lubricated insufficient, the life-span of having reduced skeleton, oil sealing and main shaft.

Summary of the invention

The novel evacuated pump of the present invention provides a kind of raising vacuum pump skeleton, vacuum pump in oil sealing life-span that can overcome above-mentioned defective at above problem.

Solving the in-problem technological scheme of the present invention is that this novel evacuated pump comprises motor, housing, outside framework oil seal, main shaft, rotor, machine oil, bearing, butter, poly-phenyl tetrafluoride pad, venting chambers, one-way valve, piston ring, relief opening.The driven by motor main shaft rotates, rotor is connected with main shaft, outside framework oil seal, rotor, machine oil, bearing, butter, poly-phenyl tetrafluoride pad, venting chambers, one-way valve, piston ring are between main shaft and housing, machine oil is between housing and the outside framework oil seal, in bearing is arranged, between outside framework oil seal and the poly-phenyl tetrafluoride pad butter is arranged, between poly-phenyl tetrafluoride pad and the piston ring venting chambers is arranged, one-way valve is arranged in the venting chambers, and one-way valve is connected with relief opening on being positioned at housing.Working rotor produces positive negative pressure alternation, relief opening continually exhaust in atmosphere.When middle and slow speed of revolution (1000～1500 rev/mins) descended little pressure, gas entered venting chambers and drains into atmosphere.When not having pressure, gas is discharged from gross blow hole by poly-phenyl tetrafluoride pad blocking-up, is closed by the one-way valve self-priming when producing negative pressure.Poly-phenyl tetrafluoride pad spiral is identical with the main axis rotation direction, is inhaled to move by negative pressure when butter to climb in the spiral not go by counter pushing away.Outside framework oil seal does not have under the suction situation at no pressure, is subjected to the life-saving as for positive and negative direction lubricates.

Beneficial effect: the novel evacuated pump of the present invention has been stopped machine oil and has been oozed slowly from oil sealing, enters the vacuum pump pump chamber, and skeleton, oil sealing lubricate fully, improve the vacuum pump aspiration rates, shorten period of exhaust, reduce vacuum pump pump chamber temperature again simultaneously, improved the life-span of skeleton, oil sealing and main shaft.

Description of drawings

Fig. 1 is the novel evacuated pump schematic representation of the present invention.Form by motor 1, housing 2, outside framework oil seal 3, main shaft 4, rotor 5, machine oil 6, bearing 7, butter 8, poly-phenyl tetrafluoride pad 9, venting chambers 10, one-way valve 11, piston ring 12, relief opening 13.

Embodiment

Below in conjunction with accompanying drawing the novel evacuated pump of the present invention is described further.

The novel evacuated pump of the present invention is made up of motor 1, housing 2, outside framework oil seal 3, main shaft 4, rotor 5, machine oil 6, bearing 7, butter 8, poly-phenyl tetrafluoride pad 9, venting chambers 10, one-way valve 11, piston ring 12, relief opening 13.Motor 1 drives main shaft 4 and rotates, and rotor 5 is connected with main shaft 4, the positive negative pressure alternation of rotor 5 work generations, by relief opening 13 continually exhaust in atmosphere.During the following little pressure of 1200 rev/mins of middle and slow speed of revolution, gas enters venting chambers 10 and drains into atmosphere.When not having pressure, gas is discharged from gross blow hole by poly-phenyl tetrafluoride pad 9 blocking-up, is closed by one-way valve 11 self-primings when producing negative pressure.Poly-phenyl tetrafluoride pad 9 spirals are identical with main shaft 4 sense of rotation, inhaled to move by negative pressure when butter 8 to climb in the spiral not go by counter pushing away.Outside framework oil seal 3 does not have under the suction situation at no pressure, is subjected to the life-saving as for positive and negative direction lubricates.

Claims

1. novel evacuated pump is characterized in that being made up of motor (1), housing (2), outside framework oil seal (3), main shaft (4), rotor (5), machine oil (6), bearing (7), butter (8), poly-phenyl tetrafluoride pad (9), venting chambers (10), one-way valve (11), piston ring (12), relief opening (13); Motor (1) drives main shaft (4) and rotates, rotor (5) is connected with main shaft (4), outside framework oil seal (3), rotor (5), machine oil (6), bearing (7), butter (8), poly-phenyl tetrafluoride pad (9), venting chambers (10), one-way valve (11), piston ring (12) is positioned between main shaft (4) and the housing (2), machine oil (6) is between housing (2) and the outside framework oil seal (3), in bearing (7) is arranged, between outside framework oil seal (3) and the poly-phenyl tetrafluoride pad (9) butter (8) is arranged, between poly-phenyl tetrafluoride pad (9) and the piston ring (12) venting chambers (10) is arranged, one-way valve (11) is arranged in the venting chambers (10), and one-way valve (11) is connected with relief opening (13) on being positioned at housing (2).