CN204114256U - Unloading valve exhaust gear - Google Patents
Unloading valve exhaust gear Download PDFInfo
- Publication number
- CN204114256U CN204114256U CN201420434568.XU CN201420434568U CN204114256U CN 204114256 U CN204114256 U CN 204114256U CN 201420434568 U CN201420434568 U CN 201420434568U CN 204114256 U CN204114256 U CN 204114256U
- Authority
- CN
- China
- Prior art keywords
- exhaust
- valve
- pition
- circular
- circular orientation
- 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
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model belongs to valve technology field, particularly relates to a kind of unloading valve exhaust gear.It solve the technical problems such as prior art poor practicability.Comprise exhaust pition, blind hole is provided with in one end axial centre of exhaust pition, one end that exhaust pition is provided with blind hole seals with unloading valve valve body slides and is connected, circular orientation seat is provided with at the middle part of exhaust pition, circular orientation seat is provided with and is positioned at circular orientation seat one end and the outlet valve be set on exhaust pition, circular orientation seat is connected by circumferential positioning structure with between outlet valve, exhaust pition is arranged with exhaust spring, one end of exhaust spring acts on circular orientation seat one end away from outlet valve, the other end of exhaust spring acts on the exhaust valve spring seat be located in unloading valve valve body, exhaust pition is provided with for preventing this exhaust valve spindle to the position structure away from one end movement of circular orientation seat.The utility model advantage is: practical and long service life.
Description
Technical field
The utility model belongs to valve technology field, particularly relates to a kind of unloading valve exhaust gear.
Background technique
Unloading valve is under certain condition, can make the valve of oil hydraulic pump off-load.Unloading valve normally one band two position two-way valve (being often solenoid valve) relief valve, initialization system (oil pump) principal pressure is used as when function is not off-load, (by the conversion of bi-bit bi-pass valve events) direct backspace fuel tank of pressure oil when unloading condition, system pressure is 0 value to realize some circuit controls and to improve oil pump life, reduce power consumption. belong in the loop and entry loop.Reduction valve, for adjusting pressure needed for executive component, is connected in the loop, generally can not exchange use.Unloading overflow valve is made up of relief valve and one-way valve.When system pressure reaches the cracking pressure of relief valve, relief valve is opened, pump off-load; When system pressure is down to the closing pressure of relief valve, relief valve cuts out, and pump is to system loads.Make pressure during pump off-load be called pressure unloading, the pressure making pump be in loaded state is called on-load pressure.Stability during in order to ensure that unloading valve works and improve use safety coefficient, for this reason, people have carried out long-term exploration, propose solution miscellaneous.
Such as, Chinese patent literature discloses a kind of safety unloading valve, [application number: 92218096.2], the program is when its superpressure, pressure liquid can push the overflow of off-load cone valve automatically open, and the effect of off-load exhaust pition can be utilized to push the off-load of off-load cone valve further open, thus realizes zero-pressure off-load.When static state, the active force of pressure adjusting spring in regulation component is utilized to be close on the communicating passage mouth in high and low pressure chamber by off-load cone valve, thus effectively intercepted this passage, this hydraulic system can be boosted rapidly work done, improve the self-priming performance of this system, ensure that this system can reliably work continuously.
Above-mentioned scheme improves the subproblem of prior art to a certain extent, but the program also at least exists following defect: this unloading valve is when being vented, and the connective stability between its outlet valve and exhaust pition is poor, uses and there is potential safety hazard, poor practicability.
Model utility content
The purpose of this utility model is for the problems referred to above, provides the unloading valve exhaust gear that a kind of design is more reasonable and practical.
For achieving the above object, the utility model have employed following technical proposal: this unloading valve exhaust gear arranges in unloading valve valve body, this exhaust gear comprises exhaust pition, blind hole is provided with in one end axial centre of exhaust pition, one end that exhaust pition is provided with blind hole seals with unloading valve valve body slides and is connected, circular orientation seat is provided with at the middle part of exhaust pition, circular orientation seat is provided with and is positioned at circular orientation seat one end and the outlet valve be set on exhaust pition, circular orientation seat is connected by circumferential positioning structure with between outlet valve, guide portion is provided with at the other end of exhaust pition, the external diameter of this guide portion is 1/2 of exhaust pition external diameter and between guide portion and exhaust pition, forms circular orientation face, exhaust pition is arranged with exhaust spring, one end of exhaust spring acts on circular orientation seat one end away from outlet valve, the other end of exhaust spring acts on the exhaust valve spring seat be located in unloading valve valve body, exhaust pition is arranged with the pad between exhaust spring and circular orientation seat, exhaust pition is provided with for preventing this exhaust valve spindle to the position structure away from one end movement of circular orientation seat.
In this application, being provided with circular orientation seat can so that installs outlet valve, in addition, be provided with the linkage structure intensity that circumferential positioning structure can ensure between outlet valve and exhaust pition in conjunction with position structure, namely not easily disengaging exhaust pition and circumference are fixed, good stability and virtually improve safety coefficient, also extends working life simultaneously; Be provided with circular orientation face and can play a part stroke limit, ensure use safety.
In above-mentioned unloading valve exhaust gear, described circular orientation seat comprises the circular body be connected with exhaust pition, keep off edge in the annular be connected vertical with circular body that be circumferentially with of circular body, exhaust pition sidepiece, circular body and annular are kept off between edge and are formed annular positioning groove.
In above-mentioned unloading valve exhaust gear, described circumferential positioning structure comprises some being arranged on circular body and the positioning hole of even circumferential distribution, outlet valve is provided with some cylindrical pin, and outlet valve is located in annular positioning groove and described cylindrical pin inserts in described positioning hole one by one.
In above-mentioned unloading valve exhaust gear, described position structure comprises the circular orientation protuberance being arranged on and being positioned at annular positioning groove notch end.
In above-mentioned unloading valve exhaust gear, one end that described exhaust pition is provided with blind hole is provided with circular groove, and circular groove is provided with the O-ring seal that the sealing of unloading valve valve interior wall is connected.
In above-mentioned unloading valve exhaust gear, one end that described exhaust pition is provided with circular groove is provided with annular diversion trench.
In above-mentioned unloading valve exhaust gear, described blind hole aperture place is provided with reaming.This structure can improve the stability of exhaust pition movement.
Compared with prior art, the advantage of this unloading valve exhaust gear is: 1, design more rationally and more practical, being provided with circular orientation seat can so that installs outlet valve, in addition, be provided with the linkage structure intensity that circumferential positioning structure can ensure between outlet valve and exhaust pition in conjunction with position structure, namely not easily depart from exhaust pition and circumference to be fixed, good stability and virtually improve safety coefficient, also extend working life simultaneously; Be provided with circular orientation face and can play a part stroke limit, ensure use safety; 2, being provided with annular diversion trench can augmented flow; 3, structure is simple and be easy to manufacture.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model provides.
Fig. 2 is the exhaust pition structural representation that the utility model provides.
In figure, unloading valve valve body 1, exhaust pition 2, blind hole 21, reaming 21a, circular orientation face 22, circular orientation protuberance 23, circular groove 24, O-ring seal 25, annular diversion trench 26, circular orientation seat 3, circular body 31, positioning hole 31a, annular gear along 32, outlet valve 4, cylindrical pin 41, guide portion 5, exhaust spring 6, exhaust valve spring seat 7, pad 8.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Figure 1-2, this unloading valve exhaust gear arranges in unloading valve valve body 1, this exhaust gear comprises exhaust pition 2, blind hole 21 is provided with in one end axial centre of exhaust pition 2, in blind hole 21 aperture, place is provided with reaming 21a, one end that exhaust pition 2 is provided with blind hole is connected with unloading valve valve body 1 slipper seal, concrete, the one end being provided with blind hole 21 at exhaust pition 2 is provided with circular groove 24, circular groove 24 is provided with the O-ring seal 25 that unloading valve valve body 1 inner wall sealing is connected, in order to ensure the stability of off-load, the one end being provided with circular groove 24 at exhaust pition 2 is provided with annular diversion trench 26, circular orientation seat 3 is provided with at the middle part of exhaust pition 2, concrete, this circular orientation seat 3 comprises the circular body 31 be connected with exhaust pition 2, keep off along 32 in the annular be connected vertical with circular body 31 that be circumferentially with of circular body 31, exhaust pition 2 sidepiece, circular body 31 and annular gear form annular positioning groove between 32.
Circular orientation seat 3 is provided with and is positioned at circular orientation seat 3 one end and the outlet valve 4 be set on exhaust pition 2, be connected by circumferential positioning structure between circular orientation seat 3 with outlet valve 4, concrete, here circumferential positioning structure comprises some being arranged on circular body 31 and the positioning hole 31a of even circumferential distribution, outlet valve 4 is provided with some cylindrical pin 41, and outlet valve 4 is located in annular positioning groove and described cylindrical pin 41 inserts in described positioning hole 31a one by one.
Guide portion 5 is provided with at the other end of exhaust pition 2, the external diameter of this guide portion 5 is 1/2 of exhaust pition 2 external diameter and forms circular orientation face 22 between guide portion 5 and exhaust pition 2, exhaust pition 2 is arranged with exhaust spring 6, one end of exhaust spring 6 acts on circular orientation seat 3 one end away from outlet valve 4, the other end of exhaust spring 6 acts on the exhaust valve spring seat 7 be located in unloading valve valve body 1, exhaust pition 2 is arranged with the pad 8 between exhaust spring 6 and circular orientation seat 3, exhaust pition 2 is provided with for preventing this outlet valve 4 axially to the position structure away from circular orientation seat 3 one end movement.This position structure comprises the circular orientation protuberance 23 being arranged on and being positioned at annular positioning groove notch end.
When exhaust spring 6 is by compression, realizes off-load, when exhaust spring 6 resets, be in non-unloading condition.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ herein unloading valve valve body 1, exhaust pition 2, blind hole 21, reaming 21a, circular orientation face 22, circular orientation protuberance 23, circular groove 24, O-ring seal 25, annular diversion trench 26, circular orientation seat 3, circular body 31, positioning hole 31a, annular gear along 32, the term such as outlet valve 4, cylindrical pin 41, guide portion 5, exhaust spring 6, exhaust valve spring seat 7, pad 8, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (7)
1. a unloading valve exhaust gear, arrange in unloading valve valve body (1), it is characterized in that, this exhaust gear comprises exhaust pition (2), blind hole (21) is provided with in one end axial centre of exhaust pition (2), one end that exhaust pition (2) is provided with blind hole is connected with unloading valve valve body (1) slipper seal, circular orientation seat (3) is provided with at the middle part of exhaust pition (2), circular orientation seat (3) is provided with and is positioned at circular orientation seat (3) one end and the outlet valve (4) be set on exhaust pition (2), be connected by circumferential positioning structure between circular orientation seat (3) with outlet valve (4), guide portion (5) is provided with at the other end of exhaust pition (2), the external diameter of this guide portion (5) is 1/2 of exhaust pition (2) external diameter and forms circular orientation face (22) between guide portion (5) and exhaust pition (2), exhaust pition (2) is arranged with exhaust spring (6), one end of exhaust spring (6) acts on circular orientation seat (3) one end away from outlet valve (4), the other end of exhaust spring (6) acts on the exhaust valve spring seat (7) be located in unloading valve valve body (1), exhaust pition (2) is arranged with the pad (8) be positioned between exhaust spring (6) and circular orientation seat (3), exhaust pition (2) is provided with for preventing this outlet valve (4) axially to the position structure away from circular orientation seat (3) one end movement.
2. unloading valve exhaust gear according to claim 1, it is characterized in that, described circular orientation seat (3) comprises the circular body (31) be connected with exhaust pition (2), keep off along (32) being circumferentially with of circular body (31) with the vertical annular be connected of circular body (31), exhaust pition (2) sidepiece, circular body (31) and annular gear form annular positioning groove between (32).
3. unloading valve exhaust gear according to claim 2, it is characterized in that, described circumferential positioning structure comprises some circular bodys (31) that is arranged on and goes up and the positioning hole (31a) of even circumferential distribution, outlet valve (4) is provided with some cylindrical pin (41), and outlet valve (4) is located in annular positioning groove and described cylindrical pin (41) inserts in described positioning hole (31a) one by one.
4. the unloading valve exhaust gear according to Claims 2 or 3, is characterized in that, described position structure comprises the circular orientation protuberance (23) being arranged on and being positioned at annular positioning groove notch end.
5. the unloading valve exhaust gear according to claim 1 or 2 or 3, it is characterized in that, one end that described exhaust pition (2) is provided with blind hole (21) is provided with circular groove (24), and circular groove (24) is provided with the O-ring seal (25) that unloading valve valve body (1) inner wall sealing is connected.
6. unloading valve exhaust gear according to claim 5, is characterized in that, one end that described exhaust pition (2) is provided with circular groove (24) is provided with annular diversion trench (26).
7. the unloading valve exhaust gear according to claim 1 or 2 or 3, is characterized in that, described blind hole (21) aperture place is provided with reaming (21a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420434568.XU CN204114256U (en) | 2014-08-03 | 2014-08-03 | Unloading valve exhaust gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420434568.XU CN204114256U (en) | 2014-08-03 | 2014-08-03 | Unloading valve exhaust gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114256U true CN204114256U (en) | 2015-01-21 |
Family
ID=52331568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420434568.XU Expired - Fee Related CN204114256U (en) | 2014-08-03 | 2014-08-03 | Unloading valve exhaust gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204114256U (en) |
-
2014
- 2014-08-03 CN CN201420434568.XU patent/CN204114256U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201568617U (en) | High-flow electric control check valve | |
| CN206234447U (en) | Pilot-operated type balanced valve | |
| CN203322343U (en) | Direct-acting overflow valve | |
| CN204344557U (en) | A kind of ultrahigh pressure pilot operated compound relief valve | |
| CN201420717Y (en) | Overflow valve | |
| CN205371160U (en) | Pressure boost overflow valve | |
| CN203718031U (en) | Button valve | |
| CN204677838U (en) | Ultrahigh pressure direct-acting type transient equilibrium valve | |
| CN113775764A (en) | Large-flow leakage-free unloading valve | |
| CN203718065U (en) | Pressure release valve | |
| CN205823772U (en) | A kind of balanced valve | |
| CN204114256U (en) | Unloading valve exhaust gear | |
| CN201696384U (en) | Control valve special for hydraulic lifting and descending of plunger cylinder | |
| CN205349901U (en) | Back pressure valve | |
| CN104712798A (en) | Combined pressure relief valve | |
| CN216895776U (en) | Large-flow leakage-free unloading valve | |
| CN102072216B (en) | Energy-saving reducing valve for hydraulic system | |
| CN204082736U (en) | Unloading valve piston | |
| CN204533020U (en) | A kind of integrated multifunction hydraulic element | |
| CN201606527U (en) | Small-aperture ball valve with valve-stem popping preventive mechanism | |
| CN103449334A (en) | Novel multi-way valve | |
| CN204113790U (en) | Relief valve | |
| CN206972643U (en) | A kind of electromagnetism hydraulic control one-way valve | |
| CN201934411U (en) | Energy-saving pressure relief valve of hydraulic system | |
| CN104500477A (en) | Pressure release type hydraulic control one-way logical valve |
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: 20150121 Termination date: 20150803 |
|
| EXPY | Termination of patent right or utility model |