CN204003722U - A kind of relief valve - Google Patents
A kind of relief valve Download PDFInfo
- Publication number
- CN204003722U CN204003722U CN201420428358.XU CN201420428358U CN204003722U CN 204003722 U CN204003722 U CN 204003722U CN 201420428358 U CN201420428358 U CN 201420428358U CN 204003722 U CN204003722 U CN 204003722U
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- spool
- releasing chamber
- guide groove
- 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
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- Safety Valves (AREA)
Abstract
The utility model belongs to hydraulic equipment field, be specially a kind of relief valve, comprise the valve body with filler opening and oil spilling mouth, spool is set in valve cavity, the head of described spool is the taper seal for sealing oil spilling mouth, the middle part of spool has the piston shape stressed member adapting with valve cavity inwall, and the afterbody of spool stretches in the guide groove of valve cavity inwall, and is provided with Returnning spring between the afterbody of spool and guide groove.The utility model range of regulation is large, and override pressure is little, and pressure oscillation is little, is active in one's movements, and overload capacity is large.
Description
Technical field
The utility model belongs to hydraulic equipment field, is specially a kind of relief valve.
Background technique
Relief valve is a kind of hydraulic pressure control valve, mainly plays level pressure overflow effect, voltage stabilizing, system unloaded and safety protection effect in hydraulic equipment.Existing relief valve limits to because of structure, and often range of regulation is less, and vibration when overflow is larger, reacts also sensitive not.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of relief valve is provided, and range of regulation is large, and override pressure is little, and pressure oscillation is little, is active in one's movements, and overload capacity is large.
For realizing above-mentioned technical purpose, the scheme that the utility model provides is: a kind of relief valve, comprise the valve body with filler opening and oil spilling mouth, spool is set in valve cavity, the head of described spool is the taper seal for sealing oil spilling mouth, the middle part of spool has the piston shape stressed member adapting with valve cavity inwall, and the afterbody of spool stretches in the guide groove of valve cavity inwall, and is provided with Returnning spring between the afterbody of spool and guide groove.
And, the pressure-releasing chamber with pressure control assembly is set in described valve body, this pressure-releasing chamber is communicated with guide groove, and poppet shaft is to offering the duct that makes guide groove and oil spilling mouth form path, and pressure-releasing chamber is communicated with valve cavity by the damping hole of offering on the damping hole on valve interior wall and piston shape stressed member.
And described pressure control assembly comprises the valve and the limit plunger that are connected by spring, valve is placed in the connecting port place of pressure-releasing chamber and valve cavity, and limit plunger adapts with pressure-releasing chamber and contacts with the voltage regulation screw that stretches into pressure-releasing chamber, and voltage regulation screw is connected with valve body screw thread.
The utility model range of regulation is large, and override pressure is little, and pressure oscillation is little, is active in one's movements, and overload capacity is large.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1, valve body, 2, filler opening, 3, oil spilling mouth, 4, valve cavity, 5, taper seal, 6, piston shape stressed member, 7, guide groove, 8, Returnning spring, 9, pressure-releasing chamber, 10, duct, 11, damping hole, 12, spring, 13, valve, 14, limit plunger, 15, voltage regulation screw.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The present embodiment provides a kind of relief valve, as shown in Figure 1, comprise the valve body 1 with filler opening 2 and oil spilling mouth 3, in valve body 1 cavity, spool is set, the head of described spool is the taper seal 5 for sealing oil spilling mouth 3, the middle part of spool has the piston shape stressed member 6 adapting with valve body 1 cavity inner wall, and the afterbody of spool stretches in the guide groove 7 of valve body 1 cavity inner wall, and is provided with Returnning spring 8 between the afterbody of spool and guide groove 7.
Further, the interior setting of above-mentioned valve body 1 has the pressure-releasing chamber 9 of pressure control assembly, this pressure-releasing chamber 9 is communicated with guide groove 7, poppet shaft is to offering the duct 10 that makes guide groove 7 and oil spilling mouth 3 form path, and pressure-releasing chamber 9 is communicated with valve cavity 4 by the damping hole 11 of offering on the damping hole 11 on valve body 1 inwall and piston shape stressed member 6.
Further, above-mentioned pressure control assembly comprises the valve 13 and the limit plunger 14 that are connected by spring 12, valve 13 is placed in the connecting port place of pressure-releasing chamber 9 and valve cavity 4, and limit plunger 14 adapts with pressure-releasing chamber 9 and contacts with the voltage regulation screw 15 that stretches into pressure-releasing chamber 9, and voltage regulation screw 15 is threaded with valve body 1.
When the present embodiment work, high pressure oil enters valve cavity 4 from filler opening 2, and in the time that pressure exceedes the elastic force of spool afterbody Returnning spring 8, high pressure oil can promote the piston shape stressed member 6 at spool middle part, make the taper seal 5 of spool head away from oil spilling mouth 3, thereby reach the object of overflow, pressure release.Along with the pressure difference of high pressure oil, the opening of oil spilling mouth 3 is also different.High pressure oil also can pass through the valve 13 of damping hole 11 pushing tow pressure control assemblies, and ordinary circumstance lower spring 12 power are enough to overcome the oil pressure of valve 13 another sides, and pressure-releasing chamber 9 is closed conditions.If the pressure of hydraulic system is excessive, while being only not enough to step-down by aforementioned pressure release mode, the valve 13 that high pressure oil can back down pressure control assembly enters into pressure-releasing chamber 9, and discharges oil spilling mouth 3 by the duct 10 in spool.The position of the control limit plunger 14 of adjusting screw, with the elastic strain of Regulation spring 12, i.e. the pressure control value of adjustable pressure control assembly.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvement or distortion, these improvement or distortion also should be considered as protection domain of the present utility model.
Claims (3)
1. a relief valve, comprise the valve body with filler opening and oil spilling mouth, spool is set in valve cavity, it is characterized in that: the head of described spool is the taper seal for sealing oil spilling mouth, the middle part of spool has the piston shape stressed member adapting with valve cavity inwall, the afterbody of spool stretches in the guide groove of valve cavity inwall, and is provided with Returnning spring between the afterbody of spool and guide groove.
2. a kind of relief valve according to claim 1, it is characterized in that: the pressure-releasing chamber with pressure control assembly is set in described valve body, this pressure-releasing chamber is communicated with guide groove, poppet shaft is to offering the duct that makes guide groove and oil spilling mouth form path, and pressure-releasing chamber is communicated with valve cavity by the damping hole of offering on the damping hole on valve interior wall and piston shape stressed member.
3. a kind of relief valve according to claim 2, it is characterized in that: described pressure control assembly comprises the valve and the limit plunger that are connected by spring, valve is placed in the connecting port place of pressure-releasing chamber and valve cavity, limit plunger adapts with pressure-releasing chamber and contacts with the voltage regulation screw that stretches into pressure-releasing chamber, and voltage regulation screw is connected with valve body screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428358.XU CN204003722U (en) | 2014-07-31 | 2014-07-31 | A kind of relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428358.XU CN204003722U (en) | 2014-07-31 | 2014-07-31 | A kind of relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003722U true CN204003722U (en) | 2014-12-10 |
Family
ID=52043729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420428358.XU Expired - Fee Related CN204003722U (en) | 2014-07-31 | 2014-07-31 | A kind of relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196793A (en) * | 2014-07-31 | 2014-12-10 | 红安安达新材料有限责任公司 | Overflow valve |
| CN108591549A (en) * | 2018-06-01 | 2018-09-28 | 江苏安普阀门机械有限公司 | A kind of deep fat overflow valve |
-
2014
- 2014-07-31 CN CN201420428358.XU patent/CN204003722U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196793A (en) * | 2014-07-31 | 2014-12-10 | 红安安达新材料有限责任公司 | Overflow valve |
| CN108591549A (en) * | 2018-06-01 | 2018-09-28 | 江苏安普阀门机械有限公司 | A kind of deep fat overflow 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: 20141210 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |