CN202926550U - Improved cylinder structure of vacuum pump - Google Patents

Improved cylinder structure of vacuum pump Download PDF

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Publication number
CN202926550U
CN202926550U CN 201220546041 CN201220546041U CN202926550U CN 202926550 U CN202926550 U CN 202926550U CN 201220546041 CN201220546041 CN 201220546041 CN 201220546041 U CN201220546041 U CN 201220546041U CN 202926550 U CN202926550 U CN 202926550U
Authority
CN
China
Prior art keywords
cylinder
piston
piston rod
vacuum pump
neck
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220546041
Other languages
Chinese (zh)
Inventor
樊忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANTONG LONGYING VACUUM PUMP CO Ltd
Original Assignee
NANTONG LONGYING VACUUM PUMP CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANTONG LONGYING VACUUM PUMP CO Ltd filed Critical NANTONG LONGYING VACUUM PUMP CO Ltd
Priority to CN 201220546041 priority Critical patent/CN202926550U/en
Application granted granted Critical
Publication of CN202926550U publication Critical patent/CN202926550U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an improved cylinder structure of a vacuum pump. The improved cylinder structure of the vacuum pump comprises a cylinder, and is characterized in that a cylinder cover is arranged on the upper portion of the cylinder, a piston is arranged in the cylinder, and a cylinder neck is arranged at the lower end of the cylinder. A piston ring, an expanding force ring and a guide ring are arranged between the cylinder and the piston. A piston rod is arranged in the middle of the piston and moves downward to penetrate through the cylinder and the cylinder neck. A padding plug is arranged between the cylinder neck and the piston rod. A sealing device is arranged between the padding plug and the piston rod. A padding plug gland is arranged at the lower end of the padding plug. A plurality of groups of air valves are arranged on the outer side wall of the cylinder and are communicated with an inner cavity of the cylinder. Valve covers are arranged on the air valves and are connected with air valve decks through fastening pieces. The improved cylinder structure of the vacuum pump has the advantages that the air valves are mounted on two sides of the cylinder, and working difficulty in the examining process is reduced; and a sealing component is arranged between the cylinder neck and the piston rod, so sealing performance between the cylinder neck and the piston rod is guaranteed, and service life of a machine is prolonged.

Description

A kind of air cylinder structure of improved vacuum pump
Technical field
The utility model relates to a kind of vacuum pump, relates in particular to a kind of air cylinder structure of improved vacuum pump.
Background technique
Known vacuum pump, air valve on cylinder is for placing up and down, such structure makes when checking air valve, cylinder need to be unloaded to check, has increased work difficulty, be unfavorable for conventional maintenance, and because piston rod ceaselessly moves up and down, between the cylinder neck of cylinder lower end and piston rod, the gap appears easily, cause sealing effect bad, reduce the working life of machine, therefore need to provide a kind of new technological scheme to solve the problems referred to above.
Summary of the invention
The purpose of this utility model is to provide a kind of air cylinder structure of improved vacuum pump.
The technical solution adopted in the utility model is:
a kind of air cylinder structure of improved vacuum pump, comprise cylinder, the top of described cylinder is provided with cylinder cap, described cylinder interior is provided with piston, the lower end of described cylinder is provided with the cylinder neck, be provided with piston ring between described cylinder and piston, expansion ring and guide ring, the centre of described piston is provided with piston rod, described piston rod down passes cylinder and cylinder neck, be provided with filler plugs between described cylinder neck and piston rod, be provided with seal arrangement between described filler plugs and piston rod, the lower end of described filler plugs is provided with the filler plugs gland, the outer side wall of described cylinder is provided with many group air valves, the intracavity inter-connection of described air valve and cylinder, described air valve is provided with valve bonnet, described valve bonnet is connected with air valve cap by fastening piece.
Described seal arrangement is seal ring.
The quantity of described air valve is the 1-3 group.
Described fastening piece is that air valve props up head screw.
The utility model has the advantages that: the air valve on cylinder is arranged on both sides, has reduced the work difficulty when checking; Be provided with black box between cylinder neck and piston rod, guaranteed the sealing between cylinder neck and piston rod, extended the working life of machine.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Wherein: 1, cylinder, 2, cylinder cap, 3, piston, 4, the cylinder neck, 5, piston ring, 6, expansion ring, 7, guide ring, 8, piston rod, 9, filler plugs, 10, seal ring, 11, filler plugs gland, 12, air valve, 13, valve bonnet, 14, air valve props up head screw, 15, valve gap.
Embodiment
as shown in Figure 1, the air cylinder structure of a kind of improved vacuum pump of the present utility model, comprise cylinder 1, the top of cylinder 1 is provided with cylinder cap 2, cylinder 1 inside is provided with piston 3, the lower end of cylinder 1 is provided with cylinder neck 4, be provided with piston ring 5 between cylinder 1 and piston 3, expansion ring 6 and guide ring 7, the centre of piston 3 is provided with piston rod 8, piston rod 8 down passes cylinder 1 and cylinder neck 4, be provided with filler plugs 9 between cylinder neck 4 and piston rod 8, be provided with seal ring 10 between filler plugs 9 and piston rod 8, the lower end of filler plugs 9 is provided with filler plugs gland 11, the outer side wall of cylinder 1 is provided with two groups of air valves 12, the intracavity inter-connection of air valve 12 and cylinder 1, air valve 12 is provided with valve bonnet 13, valve bonnet 13 props up head screw 14 by air valve and is connected with air valve cap 15.Air valve 12 on cylinder 1 is arranged on both sides, has reduced the work difficulty when checking; Be provided with seal ring 10 between cylinder neck 4 and piston rod 8, guaranteed the sealing between cylinder neck 4 and piston rod 8, extended the working life of machine.

Claims (4)

1. the air cylinder structure of an improved vacuum pump, comprise cylinder, it is characterized in that: the top of described cylinder is provided with cylinder cap, described cylinder interior is provided with piston, the lower end of described cylinder is provided with the cylinder neck, be provided with piston ring between described cylinder and piston, expansion ring and guide ring, the centre of described piston is provided with piston rod, described piston rod down passes cylinder and cylinder neck, be provided with filler plugs between described cylinder neck and piston rod, be provided with seal arrangement between described filler plugs and piston rod, the lower end of described filler plugs is provided with the filler plugs gland, the outer side wall of described cylinder is provided with many group air valves, the intracavity inter-connection of described air valve and cylinder, described air valve is provided with valve bonnet, described valve bonnet is connected with air valve cap by fastening piece.
2. the air cylinder structure of a kind of improved vacuum pump according to claim 1, it is characterized in that: described seal arrangement is seal ring.
3. the air cylinder structure of a kind of improved vacuum pump according to claim 1 is characterized in that: the quantity of described air valve is the 1-3 group.
4. the air cylinder structure of a kind of improved vacuum pump according to claim 1, it is characterized in that: described fastening piece is that air valve props up head screw.
CN 201220546041 2012-10-24 2012-10-24 Improved cylinder structure of vacuum pump Expired - Fee Related CN202926550U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220546041 CN202926550U (en) 2012-10-24 2012-10-24 Improved cylinder structure of vacuum pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220546041 CN202926550U (en) 2012-10-24 2012-10-24 Improved cylinder structure of vacuum pump

Publications (1)

Publication Number Publication Date
CN202926550U true CN202926550U (en) 2013-05-08

Family

ID=48216521

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220546041 Expired - Fee Related CN202926550U (en) 2012-10-24 2012-10-24 Improved cylinder structure of vacuum pump

Country Status (1)

Country Link
CN (1) CN202926550U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102878056A (en) * 2012-10-24 2013-01-16 南通龙鹰真空泵业有限公司 Improved cylinder structure of vacuum pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102878056A (en) * 2012-10-24 2013-01-16 南通龙鹰真空泵业有限公司 Improved cylinder structure of vacuum pump

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130508

Termination date: 20171024

CF01 Termination of patent right due to non-payment of annual fee