CN204458619U - Relief valve - Google Patents
Relief valve Download PDFInfo
- Publication number
- CN204458619U CN204458619U CN201520130142.XU CN201520130142U CN204458619U CN 204458619 U CN204458619 U CN 204458619U CN 201520130142 U CN201520130142 U CN 201520130142U CN 204458619 U CN204458619 U CN 204458619U
- Authority
- CN
- China
- Prior art keywords
- valve body
- relief valve
- spool
- inner chamber
- adjusting screw
- 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.)
- Active
Links
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a kind of relief valve, described relief valve comprises valve body, spool, adjusting screw, circlip, described valve body has the inner chamber of hollow, described spool, adjusting screw and circlip are all arranged in the inner chamber of described valve body, it is characterized in that, described relief valve also comprises spring seat, spring and filter in the inner chamber being arranged on described valve body, described spring is arranged between described spool and described spring seat, described valve body lower portion is provided with recess, and described filter is to be arranged in described recess with the mode of described recesses fit.And the multiple flow-offs be provided with on described valve body for off-load.
Description
Technical field
The utility model belongs to hydrovalve technical field, particularly relates to a kind of relief valve.
Background technique
Relief valve is a kind of hydraulic pressure control valve, in hydraulic equipment, mainly play level pressure overflow, voltage stabilizing, system unloaded and safety protection.
Along with the work of hydraulic system, the impurity such as wear debris of inevitably mechanical parts in hydraulic oil, when traditional relief valve works, hydraulic oil with these impurity enters in relief valve, in the space that the valve body particularly entering relief valve coordinates with spool, bring adverse influence to relief valve, relief valve time serious, may be caused to lose efficacy.
And traditional relief valve generally only arranges a flow-off for off-load, unloading rate is slow, and the adjustment sensitivity of valve is lower.
In view of the above problems, necessary traditional relief valve to be improved.
Model utility content
The purpose of this utility model is intended at least one aspect solving the above-mentioned problems in the prior art.
In in one of the present utility model, provide a kind of relief valve, described relief valve comprises valve body, spool, adjusting screw, circlip, described valve body has the inner chamber of hollow, described spool, adjusting screw and circlip are all arranged in the inner chamber of described valve body, it is characterized in that, described relief valve also comprises the spring seat in the inner chamber being arranged on described valve body, spring and filter, described spring is arranged between described spool and described spring seat, described valve body lower portion is provided with recess, described filter is to be arranged in described recess with the mode of described recesses fit.
In one embodiment, described valve body is provided with the multiple flow-offs for off-load.
In one embodiment, described filter is to be arranged in described recess with the mode of described recess interference fit.
In one embodiment, be provided with stepped part in described recess, described filter is provided with convex shoulder, and described filter is arranged in described recess with described abutting of stepped part by described convex shoulder.
In one embodiment, described multiple flow-off is along the uniform multiple holes of the circumferencial direction of valve body.
In one embodiment, described spring seat and described adjusting screw form.
In one embodiment, the excircle of described relief valve is provided with groove, arranges support ring and seal ring in the trench, described support ring supports described seal ring.
Of the present utility model in another in, provide a kind of relief valve, described relief valve comprises valve body, spool, adjusting screw, circlip, described valve body has the inner chamber of hollow, described spool, adjusting screw and circlip are all arranged in the inner chamber of described valve body, it is characterized in that, described relief valve also comprises spring seat in the inner chamber being arranged on described valve body and spring, described spring is arranged between described spool and described spring seat, and described valve body is also provided with the multiple flow-offs for off-load.
In one embodiment, described multiple flow-off is along the uniform multiple holes of the circumferencial direction of valve body.
According to relief valve of the present utility model, filler opening place is provided with filter, the contaminant filters such as the wear debris of the mechanical parts be present in fluid can fall by this filter, with the clean fluid entered in relief valve, thus the adverse effect of the impurity in fluid to relief valve can be eliminated, reduce the risk that relief valve breaks down.
And, be also provided with multiple flow-off according to relief valve of the present utility model, the unloading rate of hydraulic system can be accelerated, greatly add the adjustment sensitivity of valve.
Accompanying drawing explanation
Referring now to the schematic figures of enclosing, only by way of example, describe embodiment of the present utility model, wherein, reference character identical in the accompanying drawings represents identical parts.
Fig. 1 is the sectional view of the relief valve according to an embodiment of the present utility model;
Fig. 2 shows the relief valve middle filtrator of Fig. 1 and the partial enlarged drawing of valve body cooperating structure.
Embodiment
Below by embodiment, and 1-2 by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In the description, same or analogous drawing reference numeral indicates same or analogous parts.The explanation of following reference accompanying drawing to the utility model mode of execution is intended to make an explanation to present general inventive concept of the present utility model, and not should be understood to one restriction of the present utility model.
As shown in Figure 1, the sectional view of relief valve general structure is shown.This relief valve comprise valve body 1, spool 2, spring seat, adjusting screw, spring 4, support ring 5, seal ring 6,7,8, circlip 9 and filter 10.Valve body 1 is the shell construction of hollow, and parts 2-10 is arranged in the inner chamber of valve body 1 hollow.And valve body 1 is directly screwed in the cavity of machining internal thread on main valve body (not shown), and valve body 1 is fixedly connected on main valve body by the screw thread that its periphery processes.In this embodiment, spool 2 is in cone-shaped.By coordinating of this poppet valve core and valve body, realize the opening and closing of relief valve.
In this embodiment, spring seat and adjusting screw form as one, and are namely labeled as the parts of 3 in Fig. 1.The top of parts 3 is formed as the adjusting screw of interior hexagonal, and bottom is formed as non-threaded portion, and this non-threaded portion is used as spring seat.As shown in Figure 1, the lower end of spring seat is outstanding is formed with protuberance, and this protuberance is embedded in the upper end of spring 4, and the lower end of spring 4 is embedded with the cylindrical end of poppet valve core 2, and poppet valve core 2 to be squeezed in valve body 1 on shoulder by the pretightening force of spring 4.Adjusting screw is connected with valve body 1 by screw thread, by adjustment adjusting screw, carrys out the pretightening force of Regulation spring 4, thus the setting pressure of regulating system.Circlip 9 is arranged on above adjusting screw, is used for limiting the axial motion of adjusting screw.It should be noted that in other embodiments, spring seat and adjusting screw also can for two parts be separated.
As shown in Figure 1, the filler opening place, valve body 1 bottom of the utility model relief valve is provided with filter 10, this filter 10 filters the fluid entering this relief valve, clean, enter relief valve inside to prevent the impurity in fluid.The bottom of valve body 1 is processed with suitable recess, and filter 10 is placed in this recess.Because high pressure oil flows upward from the below Fig. 1, thus high pressure oil all the time upwardly filter 10.Preferably, filter 10 in an interference fit with the recesses fit of valve body 1.More preferably, as shown in Figure 2, in the recess of valve body 1, be provided with stepped part 11, filter 10 is provided with convex shoulder, by being pressed in stepped part 11 by this convex shoulder, filter 10 is installed in the recess of valve body 1.
Further, as shown in Figure 2, valve body 1 is provided with multiple flow-off 12 for off-load, accelerates the speed of relief valve off-load thus, and increase the adjustment sensitivity of valve.Preferably, by evenly boring the mode of a collar aperture on the excircle of valve body, the plurality of flow-off is formed.
In addition, as shown in Figure 1, the excircle of valve body 1 is processed with groove, support ring 5 and seal ring 6 is provided with in this groove, wherein support ring 5 supports seal ring 6, thus reduce seal ring 6 and this groove extrude gap, prevent seal ring 6 be crushed out of shape and reduce sealing effect.In addition, be processed with groove respectively on the top of the region that valve body 1 contacts with parts 3 and valve body 1, in these two grooves, be respectively arranged with seal ring 7,8, prevent fluid from revealing.
Working principle according to relief valve of the present utility model is: this relief valve is a kind of valve of plug-in type, to be inserted on main valve body foundry goods in corresponding die cavity.High pressure oil, through filter, contacts with poppet valve core.When system pressure is greater than initial tension of spring, valve is unlocked, and fluid flows to fuel tank by the multiple holes be uniformly distributed along the circumference, to reduce the pressure of system.When system pressure is less than the pretightening force of spring, poppet valve core moves down, and valve is closed, and plays the effect of overload protection.
Although the preferred embodiment according to the utility model present general inventive concept has been shown and explanation, but, those skilled in the art will appreciate that, when not deviating from principle and the spirit of this present general inventive concept, can make a change these embodiments, scope of the present utility model is with claim and their equivalents.
Claims (9)
1. a relief valve, described relief valve comprises valve body, spool, adjusting screw, circlip, described valve body has the inner chamber of hollow, described spool, adjusting screw and circlip are all arranged in the inner chamber of described valve body, it is characterized in that, described relief valve also comprises spring seat, spring and filter in the inner chamber being arranged on described valve body, described spring is arranged between described spool and described spring seat, described valve body lower portion is provided with recess, and described filter is to be arranged in described recess with the mode of described recesses fit.
2. relief valve according to claim 1, is characterized in that, described valve body is provided with the multiple flow-offs for off-load.
3. relief valve according to claim 1, is characterized in that, described filter is to be arranged in described recess with the mode of described recess interference fit.
4. relief valve according to claim 1, is characterized in that, is provided with stepped part in described recess, and described filter is provided with convex shoulder, and described filter is arranged in described recess with described abutting of stepped part by described convex shoulder.
5. relief valve according to claim 2, is characterized in that, described multiple flow-off is along the uniform multiple holes of the circumferencial direction of valve body.
6. relief valve according to claim 1, is characterized in that, described spring seat and described adjusting screw form.
7. relief valve according to claim 1, is characterized in that, the excircle of described relief valve is provided with groove, arranges support ring and seal ring in the trench, and described support ring supports described seal ring.
8. a relief valve, described relief valve comprises valve body, spool, adjusting screw, circlip, described valve body has the inner chamber of hollow, described spool, adjusting screw and circlip are all arranged in the inner chamber of described valve body, it is characterized in that, described relief valve also comprises spring seat in the inner chamber being arranged on described valve body and spring, and described spring is arranged between described spool and described spring seat, and described valve body is also provided with the multiple flow-offs for off-load.
9. relief valve according to claim 8, is characterized in that, described multiple flow-off is along the uniform multiple holes of the circumferencial direction of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130142.XU CN204458619U (en) | 2015-03-06 | 2015-03-06 | Relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130142.XU CN204458619U (en) | 2015-03-06 | 2015-03-06 | Relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458619U true CN204458619U (en) | 2015-07-08 |
Family
ID=53665513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520130142.XU Active CN204458619U (en) | 2015-03-06 | 2015-03-06 | Relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204458619U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017515A (en) * | 2017-03-31 | 2017-08-04 | 中航光电科技股份有限公司 | A kind of sealing structure and the rotary connector using the sealing structure |
| CN109140002A (en) * | 2018-10-23 | 2019-01-04 | 北京动力机械研究所 | A kind of pressure stabilizing plate overflow valve |
| CN110242632A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Main-control valve of excavating machine secondary relief with filter device |
| CN110242631A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Excavator speed governing valve |
-
2015
- 2015-03-06 CN CN201520130142.XU patent/CN204458619U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017515A (en) * | 2017-03-31 | 2017-08-04 | 中航光电科技股份有限公司 | A kind of sealing structure and the rotary connector using the sealing structure |
| CN107017515B (en) * | 2017-03-31 | 2021-01-29 | 中航光电科技股份有限公司 | Sealing structure and rotary connector adopting same |
| CN109140002A (en) * | 2018-10-23 | 2019-01-04 | 北京动力机械研究所 | A kind of pressure stabilizing plate overflow valve |
| CN110242632A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Main-control valve of excavating machine secondary relief with filter device |
| CN110242631A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Excavator speed governing valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204458619U (en) | Relief valve | |
| CN101634317B (en) | Plug-in type balance valve | |
| CN203784001U (en) | Overflow valve | |
| CN201475070U (en) | Cartridge balance valve | |
| CN205047561U (en) | One -way buffering overflow valve and closed hydraulic pump | |
| CN205136798U (en) | Multi stage decompression maze cage type adjusting valve | |
| CN203257778U (en) | Direct-acting three-way proportional reducing valve | |
| US2206110A (en) | Shock absorber | |
| CN104315155A (en) | Improvement method for internal bypass structure of cut-off valve | |
| CN203500559U (en) | Small-flow reversing valve | |
| CN205578808U (en) | Platform truck pressure relief valve body | |
| CN105587700B (en) | Fluid pressure valve device and hydraulic system and machine including the fluid pressure valve device | |
| CN211039226U (en) | Hydraulic power cylinder with overflow structure | |
| CN209540144U (en) | The adapted pad of hydraulic cartridge valve | |
| CN103075378B (en) | Filter bypass overflow valve | |
| CN205173503U (en) | Poor control valve of high pressure | |
| CN203051273U (en) | Plug-in mounting type balance valve | |
| CN203051275U (en) | Plug-in-type balance valve | |
| CN200993023Y (en) | High pressure high-flow safety valve | |
| CN201373087Y (en) | Reducer adjustable exhaust valve | |
| CN205780958U (en) | Combination bore blockage resisting pilot operated compound relief valve | |
| CN203978988U (en) | Be provided with the integral multitandem valve of integral hydraulic lock and anti-pollution plug-in overflow valve | |
| CN204942655U (en) | A kind of stomatal conductivity formula Decompression valves | |
| CN204187068U (en) | Safety throttle valve | |
| CN215171148U (en) | Overflow valve for hydraulic motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |