CN203627912U - Dynamic seal structure - Google Patents

Dynamic seal structure Download PDF

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Publication number
CN203627912U
CN203627912U CN201320792974.9U CN201320792974U CN203627912U CN 203627912 U CN203627912 U CN 203627912U CN 201320792974 U CN201320792974 U CN 201320792974U CN 203627912 U CN203627912 U CN 203627912U
Authority
CN
China
Prior art keywords
valve
seal structure
dynamic seal
oilhole
utility
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
CN201320792974.9U
Other languages
Chinese (zh)
Inventor
张艺宝
权军虎
王维维
万丽萍
赵彬
李扬
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.)
Xian Aero Engine Controls Co Ltd
Original Assignee
Xian Aero Engine Controls 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 Xian Aero Engine Controls Co Ltd filed Critical Xian Aero Engine Controls Co Ltd
Priority to CN201320792974.9U priority Critical patent/CN203627912U/en
Application granted granted Critical
Publication of CN203627912U publication Critical patent/CN203627912U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a dynamic seal structure. The dynamic seal structure comprises a high-pressure fuel oil pressure generating end and a rubber ring slot for storing a seal rubber ring; the dynamic seal structure also comprises an oil hole formed in the bottom of the rubber ring slot and communicated with the high-pressure fuel oil pressure generating end. The utility model provides the dynamic seal structure which is good in the sealing property and capable of increasing the friction when a valve is moved.

Description

Movable sealing structure
Technical field
The utility model belongs to technical field of sealing technology, relates to a kind of movable sealing structure, relates in particular to a kind of for the sealing configuration on reciprocatory motion valve.
Background technique
Domestic motive sealing at present is generally divided into the sealing means such as shaped packing seal, packing box seal, piston ring sealing, these sealing means often can not reach the effect of sealing in the time that the valve that some is needed to moment switching position seals, and when moving, valve is short of power, the working position of valve changes difficulty, can not meet usage requirement.
Model utility content
In order to solve the above-mentioned technical problem existing in background technique, the utility model provides a kind of good airproof performance and can increase valve the movable sealing structure of the frictional force while movement.
Technical solution of the present utility model is: the utility model provides a kind of movable sealing structure, comprise high pressure fuel pressure produce end and for depositing the aprons slot of sealing rubber ring; Its special way is: described movable sealing structure also comprises the oilhole that is arranged on aprons slot bottom and connects with high pressure fuel pressure generation end.
The internal diameter of above-mentioned oilhole is less than the internal diameter of aprons slot.
The diameter of above-mentioned oilhole is 0.8mm.
The utility model has the advantages that:
The utility model increases an oilhole at sealing rubber ring groove bottom, and the fuel oil of certain pressure is introduced between aprons slot and cushion rubber by oilhole, and cushion rubber is outside rising under internal oil pressure effect, thereby plays seal action, and increases frictional force.This structure can guarantee valve sealing between high low pressure fuel oil in to-and-fro motion process, and increases the frictional force of valve motion, can be used for the valve sealing that some need moment switching position, and it is simple in structure, is easy to realize.
Accompanying drawing explanation
Fig. 1 is the principle schematic of movable sealing structure provided by the utility model;
Fig. 2, Fig. 3 are respectively the application example structural representations based on movable sealing structure provided by the utility model;
Wherein:
1-high pressure fuel pressure produces end; 2-aprons slot; 3-oilhole; 4-sealing rubber ring.
Embodiment
Figure 1 shows that the structure diagram of this motive sealing, comprise that high pressure fuel pressure produces end 1 and for depositing the aprons slot 2 of sealing rubber ring 4; Also comprise and be arranged on aprons slot 2 bottoms and produce end 1 oilhole connecting 3 with high pressure fuel pressure, the internal diameter of oilhole 3 is less than the internal diameter of aprons slot, the preferred Ф 0.8mm of internal diameter of oilhole 3.
Fig. 2, Figure 3 shows that the application example of valve structure in the utility model.
As shown in Figure 2, valve left end is subject to high pressure fuel pressure, and right-hand member is subject to spring force and low-voltage fuel pressure.According to the job requirement of product, valve has two working positions.In the time that left end oil pressure is less than a certain value, valve remains that initial position is motionless, and in the time that left end oil pressure is greater than this force value, valve moment moves right, and switches to another working position.
In the utility model, the motive sealing of O shape cushion rubber mainly contains two effects, and the one, play seal action, guarantee that the high pressure oil of left end can not be leaked to the low-pressure cavity on the right; The 2nd, play and increase the effect that valve moves frictional force, guarantee that valve does not move in the time that valve left end oil pressure is only greater than right-hand member spring force and adds low pressure oil pressure, only have in the time that valve left end oil pressure is greater than right-hand member spring force, low pressure oil pressure and cushion rubber frictional force, valve just starts mobile, and moment moves to right-hand member.
And above-mentioned two effects of motive sealing are all to realize by the Ф 0.8mm oilhole of aprons slot bottom.As shown in Figure 3, high pressure fuel enters between cushion rubber and aprons slot by little oilhole, and cushion rubber is subject to oil pressure and expands outwardly, be adjacent to inner walls, oil pressure is larger, and cushion rubber and inner walls laminating are tightr, sealing is better, the frictional force when increasing valve simultaneously and moving.

Claims (3)

1. a movable sealing structure, comprise high pressure fuel pressure produce end and for depositing the aprons slot of sealing rubber ring; It is characterized in that: described movable sealing structure also comprises the oilhole that is arranged on aprons slot bottom and connects with high pressure fuel pressure generation end.
2. movable sealing structure according to claim 1, is characterized in that: the internal diameter of described oilhole is less than the internal diameter of aprons slot.
3. movable sealing structure according to claim 2, is characterized in that: the diameter of described oilhole is 0.8mm.
CN201320792974.9U 2013-12-03 2013-12-03 Dynamic seal structure Expired - Fee Related CN203627912U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320792974.9U CN203627912U (en) 2013-12-03 2013-12-03 Dynamic seal structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320792974.9U CN203627912U (en) 2013-12-03 2013-12-03 Dynamic seal structure

Publications (1)

Publication Number Publication Date
CN203627912U true CN203627912U (en) 2014-06-04

Family

ID=50814393

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320792974.9U Expired - Fee Related CN203627912U (en) 2013-12-03 2013-12-03 Dynamic seal structure

Country Status (1)

Country Link
CN (1) CN203627912U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112775118A (en) * 2021-01-29 2021-05-11 安徽应流航空科技有限公司 Automatic fuel pipeline air blowing valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112775118A (en) * 2021-01-29 2021-05-11 安徽应流航空科技有限公司 Automatic fuel pipeline air blowing valve

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

Granted publication date: 20140604

Termination date: 20201203