CN203809759U - Back pressure valve - Google Patents
Back pressure valve Download PDFInfo
- Publication number
- CN203809759U CN203809759U CN201420205953.7U CN201420205953U CN203809759U CN 203809759 U CN203809759 U CN 203809759U CN 201420205953 U CN201420205953 U CN 201420205953U CN 203809759 U CN203809759 U CN 203809759U
- Authority
- CN
- China
- Prior art keywords
- back pressure
- valve body
- spool
- hydraulic fluid
- fluid port
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 58
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a back pressure valve capable of adjusting back pressure under different flows, and belongs to the technical field of hydraulic valves. The back pressure valve comprises a valve body and a valve element installed in a blind hole of the valve body in a matched mode, the right end of the valve body is provided with an oil mouth I communicated with the blind hole of the valve body, the left end of the valve body is provided with the blind hole, the valve element is provided with a left radial throttling channel and a right radial throttling channel which penetrate through the valve element, the valve body is provided with an oil mouth II communicated with the left throttling channel and an oil mouth III communicated with the right throttling channel, a shoulder is arranged at the position, between the left throttling channel and the right throttling channel, of the surface of the valve element, an adjustable flow channel is arranged between the left throttling channel and the shoulder, and when the valve element moves leftwards, the shoulder gradually seals the adjustable flow channel. The back pressure valve has the advantages of being simple and compact in structure, low in production cost and capable of adjusting the back pressure under different flows, meeting the system requirement, preventing back pressure from being too large and wasting energy, and achieving bidirectional back pressure.
Description
Technical field
The utility model relates to hydrovalve technical field, specifically a kind of back pressure valve of adjustable different flow lower back pressure pressure.
Background technique
At present, in hydraulic system, general one-way valve or the relief valve of adopting serves as back pressure valve at home, and back pressure pressure is subject to flow effect large, and one-way valve is installed or relief valve back pressure pressure exists always, can not control on demand back pressure pressure, caused the waste of energy.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of back pressure valve.This model utility inside has a fixed restriction passage and an adjustable passage.By controlling the back pressure pressure under the adjustable different flow of adjustable passage, not only meet system requirements but also can not make the excessive waste energy of back pressure.
The utility model is achieved through the following technical solutions: a kind of back pressure valve, comprises valve body, spool;
Described valve body left end offers blind hole, and its right-hand member offers the hydraulic fluid port I that is communicated with valve body blind hole; Described spool cooperation is arranged in valve body blind hole, and spool left end offers blind hole, offers the left throttling passage radially and the right throttling passage that run through spool on spool; On valve body, offer the hydraulic fluid port II that is communicated with left throttling passage and the hydraulic fluid port III that is communicated with right throttling passage; Spool face between described left throttling passage and right throttling passage is provided with shoulder; Between described left throttling passage and shoulder, be provided with adjustable passage; In the time that spool is moved to the left, described shoulder seals described adjustable passage gradually;
Described spool blind hole left end is provided with screw plug I; Described valve body blind hole left end is provided with screw plug II; Between described screw plug I and screw plug II, be fixed with spring; Between described screw plug II and spring, be provided with adjustment pad.
It is further: between described spool and screw plug I, be provided with O RunddichtringO.
Between described valve body and screw plug II, be provided with O RunddichtringO.
Offer the hydraulic fluid port IV that is communicated to valve body blind hole in described valve body surface; Described hydraulic fluid port IV is positioned at screw plug I left side.
In described hydraulic fluid port IV, offer internal thread.
In described hydraulic fluid port I, offer internal thread.
Respectively having a circle deep gouge at described spool periphery on respect to the position of left throttling passage and right throttling passage, is described shoulder between described two deep gouges.
The utility model is in the time installing and using, and fluid can pass through fixed restriction passage hydraulic fluid port II-left throttling passage-right throttling passage-hydraulic fluid port III, also can pass through adjustable passage simultaneously.Adjustable passage is subject to the control of hydraulic fluid port I pressure, and in the time that the pressure of hydraulic fluid port I raises, spool Compress Spring is moved to the left, and shoulder reduces adjustable access portal gradually, now throttling backpressure rising.In the time that hydraulic fluid port I pressure reaches certain value (this pressure is set up by spring 3 and adjustment pad 6), adjustable passage is closed completely, and all fluid all passes through fixed restriction passage hydraulic fluid port II-left throttling passage-right throttling passage-hydraulic fluid port III.Fluid flows to can flow to hydraulic fluid port III by hydraulic fluid port II, also can flow to hydraulic fluid port II by hydraulic fluid port III, realizes two-way back pressure.Hydraulic fluid port IV will be revealed oil and flow out.
The utility model has the advantages that: back pressure pressure can be subject to the control of hydraulic fluid port I pressure, avoids the waste of energy; Employing fixed restriction adds the control mode of adjustable, reduces the latus rectum of spool, reduces production costs; Can realize two-way back pressure.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, valve body; 2, spring; 3, spool; 4, screw plug I; 5, O RunddichtringO I; 6, adjust pad; 7, O RunddichtringO II; 8, screw plug II; A, hydraulic fluid port II; B, left throttling passage; C, adjustable passage; D, shoulder; E, hydraulic fluid port I; F, right throttling passage; H, hydraulic fluid port III; I, spool oil duct; J, hydraulic fluid port IV.
Embodiment
Be below a specific embodiment of the present utility model, now by reference to the accompanying drawings the utility model be described further.
As shown in Figure 1, a kind of back pressure valve, comprises valve body 1 and spool 3; Valve body 1 left end offers blind hole, and its right-hand member offers the hydraulic fluid port I e that is communicated with valve body 1 blind hole, in hydraulic fluid port I e, offers internal thread, and when use, it is connected in oil circuit control, provides a pressure left to spool 3; Spool 3 is cylinder symmetric structure, its cooperation is arranged in valve body 1 blind hole, spool 3 left ends offer blind hole, offer the left throttling passage b radially and the right throttling passage f that run through spool 3 on spool 3, and spool 3 blind holes are communicated with left throttling passage b and right throttling passage f forms a spool oil duct i; On valve body 1, offer the hydraulic fluid port II a that is communicated with left throttling passage b and the hydraulic fluid port III h that is communicated with right throttling passage f; Spool 3 surfaces between described left throttling passage b and right throttling passage f are provided with shoulder d, respectively have a circle deep gouge on the position at spool 3 peripheries with respect to left throttling passage b and right throttling passage f, are described shoulder d between described two deep gouges; Between described left throttling passage b and shoulder d, be provided with adjustable passage c; In the time that spool 3 is moved to the left, described shoulder d seals described adjustable passage c gradually; Spool 3 blind hole left ends are provided with screw plug I 4, and screw plug I 4 end faces are provided with the hexagonal counterbore of its installing/dismounting, are provided with O RunddichtringO I 5 between spool 3 and screw plug I 4; Valve body 1 blind hole left end is provided with screw plug II 8, and screw plug II 8 end faces are provided with the hexagonal counterbore of its installing/dismounting, is provided with O RunddichtringO II 7 between valve body 1 and screw plug II 8; Between screw plug I 4 and screw plug II 8, be fixed with spring 2; Between screw plug II 8 and spring 2, be provided with and adjust pad 6, the oil liquid pressure of hydraulic fluid port I e when spring 2 and adjustment pad 6 are closed completely for adjusting adjustable passage c; Offer the hydraulic fluid port IV j that is communicated to valve body 1 blind hole on valve body 1 surface, hydraulic fluid port IV j is positioned at screw plug I 4 left sides, and it flows out for revealing oil, in hydraulic fluid port IV j, offers internal thread.
The utility model is in the time installing and using, and fluid can pass through the right throttling passage f-of the left throttling passage b-of fixed restriction passage hydraulic fluid port II a-spool oil duct i-hydraulic fluid port III h, also can pass through the right throttling passage f-of hydraulic fluid port II a-adjustable passage c-hydraulic fluid port III h simultaneously.Adjustable passage is subject to the control of hydraulic fluid port I pressure, and in the time that the pressure of hydraulic fluid port I raises, spool Compress Spring is moved to the left, and shoulder reduces adjustable access portal gradually, now throttling backpressure rising.In the time that hydraulic fluid port I pressure reaches certain value, adjustable passage is closed completely, and all fluid all passes through fixed restriction passage hydraulic fluid port II-left throttling passage-right throttling passage-hydraulic fluid port III.Spool 3 is symplex structure, and fluid flows to can flow to hydraulic fluid port III by hydraulic fluid port II, also can flow to hydraulic fluid port II by hydraulic fluid port III, realizes two-way back pressure.
Claims (7)
1. a back pressure valve, comprises valve body (1), spool (3);
It is characterized in that:
Described valve body (1) left end offers blind hole, and its right-hand member offers the hydraulic fluid port I (e) that is communicated with valve body (1) blind hole; Described spool (3) cooperation is arranged in valve body (1) blind hole, and spool (3) left end offers blind hole, offers the left throttling passage (b) radially and the right throttling passage (f) that run through spool (3) on spool (3); On valve body (1), offer the hydraulic fluid port II (a) that is communicated with left throttling passage (b) and the hydraulic fluid port III (h) that is communicated with right throttling passage (f); Spool (3) surface between described left throttling passage (b) and right throttling passage (f) is provided with shoulder (d); Between described left throttling passage (b) and shoulder (d), be provided with adjustable passage (c); In the time that spool (3) is moved to the left, described shoulder (d) seals described adjustable passage (c) gradually;
Described spool (3) blind hole left end is provided with screw plug I (4); Described valve body (1) blind hole left end is provided with screw plug II (8); Between described screw plug I (4) and screw plug II (8), be fixed with spring (2); Between described screw plug II (8) and spring (2), be provided with and adjust pad (6).
2. a kind of back pressure valve according to claim 1, is characterized in that: between described spool (3) and screw plug I (4), be provided with O RunddichtringO I (5).
3. a kind of back pressure valve according to claim 1, is characterized in that: between described valve body (1) and screw plug II (8), be provided with O RunddichtringO II (7).
4. according to a kind of back pressure valve described in claim 2 or 3, it is characterized in that: offer the hydraulic fluid port IV (j) that is communicated to valve body (1) blind hole on described valve body (1) surface; Described hydraulic fluid port IV (j) is positioned at screw plug I (4) left side.
5. a kind of back pressure valve according to claim 4, is characterized in that: in described hydraulic fluid port IV (j), offer internal thread.
6. a kind of back pressure valve according to claim 1, is characterized in that: in described hydraulic fluid port I (e), offer internal thread.
7. a kind of back pressure valve according to claim 1, it is characterized in that: on the position at described spool (3) periphery with respect to left throttling passage (b) and right throttling passage (f), respectively having a circle deep gouge, is described shoulder (d) between described two deep gouges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205953.7U CN203809759U (en) | 2014-04-25 | 2014-04-25 | Back pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205953.7U CN203809759U (en) | 2014-04-25 | 2014-04-25 | Back pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809759U true CN203809759U (en) | 2014-09-03 |
Family
ID=51448509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420205953.7U Expired - Fee Related CN203809759U (en) | 2014-04-25 | 2014-04-25 | Back pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809759U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150471A (en) * | 2017-12-26 | 2018-06-12 | 邵立坤 | A kind of two-way one-way speed-regulating valve |
| CN108167252A (en) * | 2017-12-26 | 2018-06-15 | 邵立坤 | Plug-in threeway one-way speed-regulating valve |
| CN108266415A (en) * | 2018-01-24 | 2018-07-10 | 陈艳艳 | One kind automatically controls variable damper valve |
| CN108278240A (en) * | 2018-01-24 | 2018-07-13 | 陈艳艳 | A kind of automatic damping adjusting valve |
| CN108361235A (en) * | 2018-04-24 | 2018-08-03 | 山河智能装备股份有限公司 | A kind of compact hydraulic control counterbalance valve and its control method |
| CN108443245A (en) * | 2018-05-11 | 2018-08-24 | 中国航发湖南动力机械研究所 | Pressure-stabilizing pressure reducing sleeve and Pressure-stabilizing pressure reducing structure |
| CN108730538A (en) * | 2018-06-17 | 2018-11-02 | 山西平阳重工机械有限责任公司 | Counterbalance valve |
-
2014
- 2014-04-25 CN CN201420205953.7U patent/CN203809759U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150471A (en) * | 2017-12-26 | 2018-06-12 | 邵立坤 | A kind of two-way one-way speed-regulating valve |
| CN108167252A (en) * | 2017-12-26 | 2018-06-15 | 邵立坤 | Plug-in threeway one-way speed-regulating valve |
| CN108167252B (en) * | 2017-12-26 | 2019-10-01 | 靖江市长源液压机械有限公司 | Plug-in threeway one-way speed-regulating valve |
| CN108150471B (en) * | 2017-12-26 | 2019-10-25 | 江苏艾伦弗罗机械制造有限公司 | A kind of two-way one-way speed-regulating valve |
| CN108266415A (en) * | 2018-01-24 | 2018-07-10 | 陈艳艳 | One kind automatically controls variable damper valve |
| CN108278240A (en) * | 2018-01-24 | 2018-07-13 | 陈艳艳 | A kind of automatic damping adjusting valve |
| CN108266415B (en) * | 2018-01-24 | 2020-07-03 | 杨松平 | Automatic control variable damping valve |
| CN108361235A (en) * | 2018-04-24 | 2018-08-03 | 山河智能装备股份有限公司 | A kind of compact hydraulic control counterbalance valve and its control method |
| CN108361235B (en) * | 2018-04-24 | 2023-09-08 | 山河智能装备股份有限公司 | Compact hydraulic control back pressure valve and control method thereof |
| CN108443245A (en) * | 2018-05-11 | 2018-08-24 | 中国航发湖南动力机械研究所 | Pressure-stabilizing pressure reducing sleeve and Pressure-stabilizing pressure reducing structure |
| CN108730538A (en) * | 2018-06-17 | 2018-11-02 | 山西平阳重工机械有限责任公司 | Counterbalance 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 |
Granted publication date: 20140903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |