CN208719047U - A kind of high pressure valve - Google Patents
A kind of high pressure valve Download PDFInfo
- Publication number
- CN208719047U CN208719047U CN201821485214.2U CN201821485214U CN208719047U CN 208719047 U CN208719047 U CN 208719047U CN 201821485214 U CN201821485214 U CN 201821485214U CN 208719047 U CN208719047 U CN 208719047U
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- CN
- China
- Prior art keywords
- core bore
- sealing surface
- valve body
- tapered sealing
- high pressure
- 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.)
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Abstract
The utility model discloses a kind of high pressure valves, the high pressure valve for being intended to provide a kind of good airproof performance and quickly can opening and seal, its key points of the technical solution are that including valve body and spool, the valve body is equipped with the core bore for installing spool, the oilhole being connected to core bore is additionally provided on valve body, core bore includes the first tapered sealing surface being placed at aperture, spool includes sequentially connected leading portion, middle section and back segment, leading portion is placed in core bore and is slidably matched with core bore, middle section is equipped with step groove, oil-gap was formed between step groove and core bore, the second tapered sealing surface for contradicting sealing with the first tapered sealing surface is additionally provided between back segment and middle section, the cone angle of first tapered sealing surface is 31.5-32.5 degree, the cone angle of second tapered sealing surface is 29.5-30.5 degree, the utility model is suitable for valve technology field.
Description
Technical field
The utility model belongs to valve technology field, refers in particular to a kind of high pressure valve.
Background technique
High pressure valve is the component in hydraulic steering system, for controlling the opening and closing of oil circuit, the valve body and valve of existing high pressure valve
Between core by face seal, be also easy to produce actuation phenomenon, lead to not quickly open, and cooperate between spool and valve body it is unstable,
Cause leakproofness poor.
Utility model content
The purpose of the utility model is to provide a kind of good airproof performance and the high pressure valves that quickly can open and seal.
Purpose of the utility model is realized as follows: a kind of high pressure valve, including valve body and spool, it is characterised in that: institute
It states valve body and is equipped with core bore for installing spool, oilhole be connected to core bore is additionally provided on valve body, core bore is including being placed in aperture
The first tapered sealing surface at place, spool include sequentially connected leading portion, middle section and back segment, and leading portion is placed in core bore and slides with core bore
Dynamic cooperation, middle section are equipped with step groove, formed oil-gap between step groove and core bore, and be additionally provided with and be used between back segment and middle section
The second tapered sealing surface of sealing is contradicted with the first tapered sealing surface, the cone angle of the first tapered sealing surface is 31.5-32.5 degree, the
The cone angle of two tapered sealing surfaces is 29.5-30.5 degree.
The utility model is further arranged to: the valve outer wall is equipped with external screw thread and stop flange, and oilhole is placed in outer
Between screw thread and stop flange, stop flange is equipped with annular groove towards externally threaded side.
The utility model is further arranged to: the outer wall of the leading portion is equipped with oil storage tank.
By using above-mentioned technical proposal, zero clearance axial sliding fit, Bu Huicun are used between spool leading portion and core bore
In catching phenomenon, middle section is circulated using step groove, and back segment is sealed firmly using the conical surface, and in sealing contact for line contact, spool
Quickly it can open and seal under high pressure between valve body, good airproof performance, and using effect is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Appended drawing reference in figure are as follows: 1, valve body；2, core bore；3, oilhole；4, the first tapered sealing surface；5, leading portion；6, middle section；7,
Back segment；8, step groove；9, the second tapered sealing surface；10, external screw thread；11, stop flange；12, annular groove；13, oil storage tank.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing, referring to Fig. 1:
A kind of high pressure valve, including valve body 1 and spool, it is characterised in that: the valve body 1 is equipped with the core for installing spool
Hole 2, the oilhole 3 being connected to core bore 2 is additionally provided on valve body 1, and core bore 2 includes the first tapered sealing surface 4 being placed at aperture, spool
Including sequentially connected leading portion 5, middle section 6 and back segment 7, leading portion 5 is placed in core bore 2 and is slidably matched with core bore 2, sets on middle section 6
Have step groove 8, formed oil-gap between step groove 8 and core bore 2, be additionally provided between leading portion 5 and middle section 6 for it is first tapered
Sealing surface 4 contradicts the second tapered sealing surface 9 of sealing, and the cone angle A of the first tapered sealing surface 4 is 31.5-32.5 degree, and second is tapered
The cone angle B of sealing surface 9 is 29.5-30.5 degree.
By using above-mentioned technical proposal, core bore 2 is blind hole structure, and wherein one end is open end, the first tapered sealing
Face 4 is placed on open end, and oil-gap formation oil circuit is crossed between step groove 8 and core bore 2 and is passed through, is connected, is closed when valve rod is opened
When seal, between spool leading portion 5 and core bore 2 use zero clearance axial sliding fit, resistance is small, and fitment stability is good, spool
Sealing is contradicted by the first tapered sealing surface 4 and the second tapered sealing surface 9 between valve body 1, due to the first tapered sealing surface 4
Cone angle is slightly larger than the cone angle of the second tapered sealing surface 9, between it is in sealing contact contacted for line, be not easy to exist that be attracted clamping stagnation existing
As that quickly can open and seal under high-pressure situations, find that the cone angle control of the first tapered sealing surface 4 exists through test of many times
Between 31.5-32.5 degree, when the cone angle B of the second tapered sealing surface 9 is controlled between 29.5-30.5 degree, under high-pressure situations its
Between stressed effect it is best, can ensure leakproofness under generated impact in opening-closing process, improve high pressure sealing performance.
The utility model is further arranged to: 1 outer wall of valve body is equipped with external screw thread 10 and stop flange 11, oilhole 3
It is placed between external screw thread 10 and stop flange 11, stop flange 11 is equipped with annular groove 12 towards the side of external screw thread 10.
By using above-mentioned technical proposal, external screw thread 10 is used for the connection of valve body 1 and connected piece, and stop flange 11 is placed in
On open end, when locking external thread 10, stop flange 11 and connected piece play the role of limit and contradict, and annular groove 12 is for pacifying
Fill sealing ring, it is ensured that the leakproofness between valve body 1 and connected piece.
The utility model is further arranged to: the outer wall of the leading portion 5 is equipped with oil storage tank 13.
By using above-mentioned technical proposal, the lubricity between leading portion 5 and core bore 2 can be increased, reduce abrasion.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model
Within the scope of.
Claims (3)
1. a kind of high pressure valve, including valve body (1) and spool, it is characterised in that: the valve body (1) is equipped with for installing spool
Core bore (2), is additionally provided with the oilhole (3) being connected to core bore (2) on valve body (1), core bore (2) include be placed in it is first tapered at aperture
Sealing surface (4), spool include sequentially connected leading portion (5), middle section (6) and back segment (7), leading portion (5) be placed in core bore (2) and with
Core bore (2) is slidably matched, and middle section (6) are equipped with step groove (8), forms oil-gap between step groove (8) and core bore (2), after
The second tapered sealing surface (9) for contradicting sealing with the first tapered sealing surface (4) is additionally provided between section (7) and middle section (6), the
The cone angle of one tapered sealing surface (4) is 31.5-32.5 degree, and the cone angle of the second tapered sealing surface (9) is 29.5-30.5 degree.
2. a kind of high pressure valve according to claim 1, it is characterised in that: valve body (1) outer wall is equipped with external screw thread
(10) it is placed between external screw thread (10) and stop flange (11) with stop flange (11), oilhole (3), stop flange (11) is outside
The side of screw thread (10) is equipped with annular groove (12).
3. a kind of high pressure valve according to claim 1, it is characterised in that: the outer wall of the leading portion (5) is equipped with oil storage tank
(13)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821485214.2U CN208719047U (en) | 2018-09-11 | 2018-09-11 | A kind of high pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821485214.2U CN208719047U (en) | 2018-09-11 | 2018-09-11 | A kind of high pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208719047U true CN208719047U (en) | 2019-04-09 |
Family
ID=65981822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821485214.2U Active CN208719047U (en) | 2018-09-11 | 2018-09-11 | A kind of high pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208719047U (en) |
-
2018
- 2018-09-11 CN CN201821485214.2U patent/CN208719047U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |