CN204253505U - A kind of seal arrangement preventing hydraulic machine piston bar oil impregnate - Google Patents

A kind of seal arrangement preventing hydraulic machine piston bar oil impregnate Download PDF

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Publication number
CN204253505U
CN204253505U CN201420692147.7U CN201420692147U CN204253505U CN 204253505 U CN204253505 U CN 204253505U CN 201420692147 U CN201420692147 U CN 201420692147U CN 204253505 U CN204253505 U CN 204253505U
Authority
CN
China
Prior art keywords
piston rod
oil
seal arrangement
hydraulic machine
piston bar
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
CN201420692147.7U
Other languages
Chinese (zh)
Inventor
徐言新
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.)
TENGZHOU JIANHA MACHINE CHEMICAL INDUSTRY Co Ltd
Original Assignee
TENGZHOU JIANHA MACHINE CHEMICAL INDUSTRY 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 TENGZHOU JIANHA MACHINE CHEMICAL INDUSTRY Co Ltd filed Critical TENGZHOU JIANHA MACHINE CHEMICAL INDUSTRY Co Ltd
Priority to CN201420692147.7U priority Critical patent/CN204253505U/en
Application granted granted Critical
Publication of CN204253505U publication Critical patent/CN204253505U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of seal arrangement preventing hydraulic machine piston bar oil impregnate, be applicable to be with the hydraulic press of liquid-filling valve to prevent the seal arrangement of its piston rod oil impregnate, comprise oil hydraulic cylinder (2), piston rod (8), piston rod cap (1), dust ring (3), guidance tape (5,7), rod chamber (10), it is characterized in that: on piston rod cap (1), be provided with oil inlet hole (9) and be communicated with annular pressure chamber (11), the lip of oil sealing (4,6) is placed on piston rod (8) in opposite directions.

Description

A kind of seal arrangement preventing hydraulic machine piston bar oil impregnate
Technical field
The utility model relates to a kind of seal arrangement preventing hydraulic machine piston bar oil impregnate.
Background technique
At present, along with the development of hydraulics and enterprise improve the requirement of manufacturing efficiency, the piston rod leakage problems of high speed dry running more looms large, typical case is exactly the hydraulic press of device liquid-filling valve, it is descending that slide block and piston rod overcome liquid-filling valve spring force by deadweight, rod chamber internal pressure is almost nil, and the pretightening force only by oil sealing itself is just likely sealed incessantly, and the outside seepage of hydraulic oil is more.
Summary of the invention
The technical problems to be solved in the utility model is, provides a kind of seal arrangement that can prevent hydraulic machine piston bar oil impregnate.
For solving the problems of the technologies described above, the utility model comprises oil hydraulic cylinder, piston rod, piston rod cap, dust ring, hydraulic pilot band, rod chamber, and piston rod cap is provided with oil inlet hole and is communicated with annular pressure chamber, the lip of oil sealing is placed on the piston rod in opposite directions.
Because the utility model bores an oil inlet hole in piston rod cap radial direction, be provided with annular pressure chamber, and pass into the hydraulic oil with steady pressure, make the lip tensioner of two oil sealings be adjacent to the surface of piston rod all the time, reach non-leakage beneficial effect.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
In figure: piston rod cap 1, oil hydraulic cylinder 2, dust ring 3, oil sealing 4, guidance tape 5, oil sealing 6, guidance tape 7, piston rod 8, oil inlet hole 9, rod chamber 10, annular pressure chamber 11.
Embodiment
From accompanying drawing: the utility model comprises oil hydraulic cylinder 2, piston rod 8, piston rod cap 1, dust ring 3, guidance tape 5,7 and rod chamber 10, piston rod cap 1 is provided with oil inlet hole 9 and is communicated with annular pressure chamber 11, the lip of oil sealing 4,6 is placed on piston rod 8 in opposite directions.
Use the utility model, oil inlet hole 9 with oil pipe connecting fluid press with hydraulic station.
The utility model is mainly applicable to the hydraulic press being with liquid-filling valve.

Claims (1)

1. one kind prevents the seal arrangement of hydraulic machine piston bar oil impregnate, comprise oil hydraulic cylinder (2), piston rod (8), piston rod cap (1), dust ring (3), guidance tape (5,7), rod chamber (10), it is characterized in that: on piston rod cap (1), be provided with oil inlet hole (9) and be communicated with annular pressure chamber (11), the lip of oil sealing (4,6) is placed on piston rod (8) in opposite directions.
CN201420692147.7U 2014-11-04 2014-11-04 A kind of seal arrangement preventing hydraulic machine piston bar oil impregnate Expired - Fee Related CN204253505U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420692147.7U CN204253505U (en) 2014-11-04 2014-11-04 A kind of seal arrangement preventing hydraulic machine piston bar oil impregnate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420692147.7U CN204253505U (en) 2014-11-04 2014-11-04 A kind of seal arrangement preventing hydraulic machine piston bar oil impregnate

Publications (1)

Publication Number Publication Date
CN204253505U true CN204253505U (en) 2015-04-08

Family

ID=52957818

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420692147.7U Expired - Fee Related CN204253505U (en) 2014-11-04 2014-11-04 A kind of seal arrangement preventing hydraulic machine piston bar oil impregnate

Country Status (1)

Country Link
CN (1) CN204253505U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108980140A (en) * 2018-07-27 2018-12-11 江苏恒立液压股份有限公司 Oil cylinder with gear racks and flat car with it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108980140A (en) * 2018-07-27 2018-12-11 江苏恒立液压股份有限公司 Oil cylinder with gear racks and flat car with it

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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: 20150408

Termination date: 20151104

EXPY Termination of patent right or utility model