CN209340129U - A kind of controllable decrement cone rubber structure - Google Patents
A kind of controllable decrement cone rubber structure Download PDFInfo
- Publication number
- CN209340129U CN209340129U CN201822152272.XU CN201822152272U CN209340129U CN 209340129 U CN209340129 U CN 209340129U CN 201822152272 U CN201822152272 U CN 201822152272U CN 209340129 U CN209340129 U CN 209340129U
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- sealing area
- decrement
- rubber
- controllable
- spool
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Abstract
The utility model discloses a kind of controllable decrement cone rubber structures, the ring-shaped rubber sealing element for including: the spool with primary sealing area and the valve body with secondary sealing area and being arranged between primary sealing area and secondary sealing area, the ring-shaped rubber sealing element is set on the primary sealing area of spool, and ring-shaped rubber sealing element lateral surface annular setting corresponds to the wedge angle protrusion of secondary sealing area.Primary sealing area with center spool axis angle and secondary sealing area are equal with valve body central axis angle controls rubber decrement.The utility model rubber decrement is controllable, and leak rate is up to 10‑9, because rubber decrement is under control in the structure, therefore the controllable decrement cone rubber structure can long term seal use.
Description
Technical field
The utility model belongs to hydraulic class product technical field more particularly to a kind of controllable decrement cone rubber knot
Structure.
Background technique
Hydraulic pump is to cause the variation of sealed volume by reciprocating motion of the plunger in cylinder bore, Lai Shixian oil suction and
Oil extraction.Hydraulic pump has many advantages, such as that compact-sized, unit power is small in size, light-weight, operating pressure is high, variable easy to accomplish.
Currently, most seal forms use single sealing structure, in plunger using angle sealing, face sealing etc. under normal circumstances
In the course of work of pump, it may appear that the problem of plunger pump faying face oil leak, therefore, the quality of sealing performance directly affects plunger pump
Quality, according to statistics, oil leakage fault accounts for a part of ratio after sale, and therefore, oil leakage phenomenon is that we primarily solve
The problem of.
Existing sealing structure is mostly ring shape, is sealed in valve body and spool using entire circular seal ring, but round
Sealing ring needs entirety to be compressed, and decrement not can control, and wears due to being used for a long time, is easy to fall off or destroys, service life
It is short, during subsequent plunger pump work, there is the phenomenon that oil leak.
Utility model content
The purpose of the utility model is to overcome be sealed in valve body and spool using entire circular seal ring in the prior art
In, but circular seal ring needs entirety to be compressed, and decrement not can control, and it is worn due to being used for a long time, is easy to fall off or destroys,
Service life is short, during subsequent plunger pump work, the defects of oil leak occurs.Rubber decrement is controlled, leak rate is up to 10-9,
It can be repeatedly used for a long, improve work efficiency and save cost.
To achieve the above object, the technical solution of the utility model is:
A kind of controllable decrement cone rubber structure, comprising: spool with primary sealing area and there is the second sealing
The valve body in face and the ring-shaped rubber sealing element being arranged between primary sealing area and secondary sealing area, the ring-shaped rubber sealing element
It is set on the primary sealing area of spool, ring-shaped rubber sealing element lateral surface annular setting corresponds to the wedge angle of secondary sealing area
Protrusion.
The primary sealing area of the spool is hierarchic structure, is also had on the inside of the ring-shaped rubber sealing element close corresponding to first
The hierarchic structure of cover.
Valve body upper outer end face has ring shaped metallic seal slot.
The primary sealing area and center spool axis angle and secondary sealing area are equal with valve body central axis angle.
The utility model has the beneficial effects that a kind of controllable decrement cone rubber structure control rubber decrement, spool
Wedge angle protrusion pointed part is first contacted with secondary sealing area in insertion valve body, improves sealing effect, and the leak rate after sealing is up to 10-9, can be repeatedly used for a long, improve work efficiency and save cost.
Detailed description of the invention
Fig. 1 is the utility model valve core structure schematic diagram.
Fig. 2 is partial enlargement structural representation at A in Fig. 1.
Fig. 3 is the utility model valve body structure schematic diagram.
Fig. 4 is structural schematic diagram after the utility model spool is connect with valve body.
Specific embodiment
The utility model is described in further detail for 1,2,3 and Fig. 4 and specific embodiment with reference to the accompanying drawing.
The utility model discloses a kind of controllable decrement cone rubber structures, comprising: with primary sealing area 11
Spool 1 and valve body 2 with secondary sealing area 21 and the annular being arranged between primary sealing area 11 and secondary sealing area 21
Rubber seal 3, the ring-shaped rubber sealing element 3 are set on the primary sealing area 11 of spool 1, outside the ring-shaped rubber sealing element 3
Annular setting in side corresponds to the wedge angle protrusion 31 of secondary sealing area 21.The primary sealing area 11 of the spool 1 is hierarchic structure,
3 inside of ring-shaped rubber sealing element also has the hierarchic structure corresponding to primary sealing area 11.
The 2 upper outer end face of valve body has ring shaped metallic seal slot 4.With inserting for other metal parts sealing structures
Enter.
Further, the primary sealing area 11 and 1 central axis angle of spool and secondary sealing area 21 and 2 center of valve body
Axis angle is equal.
When spool 1 is fitted into valve body 2, under the action of external force spring, the wedge angle of annular rubber seal 3 in spool 1
The secondary sealing area 21 of valve body 2 is compressed and be bonded first to protrusion 31, and then primary sealing area 11 is slowly bonded secondary sealing area again
21, seal valve body 2, due in the primary sealing area 11 and 1 central axis angle of spool and secondary sealing area 21 and valve body 2
Heart axis angle is equal, controls rubber decrement, so the structure can also be repeatedly used for a long, leak rate is up to 1 × 10-9。
In summary it is only the preferred embodiment of the utility model, not is used to limit the implementation model of the utility model
It encloses.Equivalent changes and modifications made by i.e. all contents according to present utility model application the scope of the patents, all should be the utility model
Technology scope.
Claims (4)
1. a kind of controllable decrement cone rubber structure, comprising: spool (1) with primary sealing area (11) and have second
The valve body (2) of sealing surface (21) and the ring-shaped rubber being arranged between primary sealing area (11) and secondary sealing area (21) sealing
Part (3), which is characterized in that the ring-shaped rubber sealing element (3) is set on the primary sealing area (11) of spool (1), the annular rubber
The wedge angle that the setting of glue sealing element (3) lateral surface annular corresponds to secondary sealing area (21) is raised (31).
2. a kind of controllable decrement cone rubber structure as described in claim 1, which is characterized in that the spool (1)
Primary sealing area (11) is hierarchic structure, is also had on the inside of the ring-shaped rubber sealing element (3) corresponding to primary sealing area (11)
Hierarchic structure.
3. a kind of controllable decrement cone rubber structure as described in claim 1, which is characterized in that on the valve body (2)
Portion's outer end face has ring shaped metallic seal slot (4).
4. a kind of controllable decrement cone rubber structure as described in claim 1, which is characterized in that the primary sealing area
(11) equal with valve body (2) central axis angle with spool (1) central axis angle and secondary sealing area (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822152272.XU CN209340129U (en) | 2018-12-21 | 2018-12-21 | A kind of controllable decrement cone rubber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822152272.XU CN209340129U (en) | 2018-12-21 | 2018-12-21 | A kind of controllable decrement cone rubber structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209340129U true CN209340129U (en) | 2019-09-03 |
Family
ID=67758029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822152272.XU Active CN209340129U (en) | 2018-12-21 | 2018-12-21 | A kind of controllable decrement cone rubber structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209340129U (en) |
-
2018
- 2018-12-21 CN CN201822152272.XU patent/CN209340129U/en active Active
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