CN202203464U - Oil compensating safety valve - Google Patents
Oil compensating safety valve Download PDFInfo
- Publication number
- CN202203464U CN202203464U CN2011203219313U CN201120321931U CN202203464U CN 202203464 U CN202203464 U CN 202203464U CN 2011203219313 U CN2011203219313 U CN 2011203219313U CN 201120321931 U CN201120321931 U CN 201120321931U CN 202203464 U CN202203464 U CN 202203464U
- Authority
- CN
- China
- Prior art keywords
- spool
- valve
- housing
- spring
- seal ring
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 abstract 7
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 19
- 239000012530 fluid Substances 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses an oil compensating safety valve, which comprises a valve core. A sealing ring, a valve seat and a pressure regulating spring are sequentially sleeved on the valve core front left to right and locked through a pressure regulating nut, two ends of the pressure regulating spring respectively abut against the valve seat and the pressure regulating nut, the valve core is installed in a cavity of a casing, a screw plug is installed at the rear end of the cavity of the casing, and an oil compensating valve spring is arranged between the rear end of the valve core and the screw plug. The valve core, the sealing ring, the valve seat, the pressure regulating spring and the pressure regulating nut are independently assembled into a whole. An inner hole of the sealing ring and the outer surface of the valve core are contacted for seal under the action of the elastic force of the pressure regulating spring, and the outer surface of the sealing ring and the inner wall of the casing are contacted for sealing under the action of the force of the oil compensating valve spring. The oil compensating safety valve is simple in structure and assembly, small in size, reliable in performance and capable of being widely applied to a hydraulic system, timely supplementing pressure oil and guaranteeing stable pressure of the hydraulic system and stability and reliability in running of the whole hydraulic system.
Description
Technical field
The utility model belongs to Hydraulic Field, relates in particular to a kind of repairing safety valve.
Background technique
At present, known safety valve mainly is the protective system overload, no repairing effect; And in practical application,, can cause the system pressure loss serious owing to the instantaneous variation and the reasons such as pressure oil internal leakage or external leakage of system pressure; System is unstable, and performance is unreliable, therefore has only timely supplementary pressure oil; Just can make whole system stable, reliable performance.
The model utility content
The technical problem that the utility model will solve provides the timely supplementary pressure oil of a kind of ability, guarantees that system pressure is stable, guarantees the stability of whole system operation and the repairing safety valve of reliability.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of repairing safety valve; Comprise spool, seal ring, valve seat, pressure adjusting spring, look nut, Fill valve spring, plug screw, suit seal ring, valve seat, pressure adjusting spring are also through look nut locking successively from left to right on the spool, and the two ends of pressure adjusting spring withstand on respectively on valve seat and the look nut; Spool is positioned at the cavity of housing; Plug screw is installed in housing cavity rear end, and plug screw contacts with the ear end face sealing of housing, and the Fill valve spring is set between the rear end of spool and the plug screw; Has the gap between valve seat and the inner walls; The outer surface of seal ring under the elastic force of Fill valve spring with the inwall contact seal of housing, the internal surface of seal ring is under the elastic force of pressure adjusting spring and the outer surface contact seal of spool, the elastic force value of pressure adjusting spring is greater than the elastic force value of Fill valve spring.
The repairing safety valve of the utility model; Wherein said seal ring is provided with endoporus, and outer surface is made as male cone (strobilus masculinus), the inwall contact seal of the male cone (strobilus masculinus) of seal ring and housing; The outer surface of said spool is made as male cone (strobilus masculinus), the male cone (strobilus masculinus) contact seal of the endoporus of seal ring and spool.
The repairing safety valve of the utility model, wherein said plug screw is threaded with housing, and plug screw has cavity, and the rear end of spool is stretched in the cavity of plug screw, and look nut is positioned at the cavity of plug screw.
The repairing safety valve of the utility model, wherein said look nut is through being threaded on the spool.
The repairing safety valve of the utility model, wherein said unloading port is arranged on the bottom of housing left side, and said repairing mouth is arranged on the top of housing.
The utility model repairing safety valve structure is simple, and spool, seal ring, valve seat, pressure adjusting spring, look nut independently are assembled into one, and volume is little; Assembling is simple; Reliable performance can be widely used in the hydraulic system, in time supplementary pressure oil; The assurance hydraulic system pressure is stable, guarantees the stability and the reliability of whole hydraulic system operation.
Description of drawings
Fig. 1 is the sectional view of the utility model repairing safety valve.
Embodiment
As shown in Figure 1, the utility model repairing safety valve comprises spool 2, seal ring 3, valve seat 4, pressure adjusting spring 5, look nut 6, Fill valve spring 7, plug screw 8; Suit seal ring 3, valve seat 4, pressure adjusting spring 5 are also through look nut 6 lockings successively from left to right on the spool 2, and look nut 6 is through being threaded on the spool 2, and the two ends of pressure adjusting spring 5 withstand on respectively on valve seat 4 and the look nut 6; The repairing safety valve is installed in the cavity 11 of housing, and spool 2 is positioned at cavity 11, and the rear threads of the cavity 11 of housing connects plug screw 8; Plug screw 8 has cavity 81; The left end opening of cavity 81, the right-hand member sealing, plug screw 8 contacts with the ear end face sealing of housing 1; The rear end of spool 2 stretch in the cavity 81 of plug screw 8 and and plug screw 8 between Fill valve spring 7 is set; Have the gap between valve seat 4 and housing 1 inwall, look nut 6 is positioned at the cavity 81 of plug screw 8, and seal ring 3 is provided with endoporus 31; Outer surface is made as male cone (strobilus masculinus) 32; The male cone (strobilus masculinus) 32 of seal ring 3 contacts with the inner wall sealing of housing 1 under the elastic force of Fill valve spring 7, and the outer surface of spool 2 is made as the male cone (strobilus masculinus) that matches with the endoporus 31 of seal ring 3, and the endoporus 31 of seal ring contacts with the male cone (strobilus masculinus) sealing of spool 2 under the elastic force of pressure adjusting spring 5.The elastic force value of Fill valve spring 7 is very little, and the elastic force value of pressure adjusting spring 5 is far longer than the elastic force value of Fill valve spring 7.
The middle part of housing 1 is provided with oil inlet P and the hydraulic pressure delivery outlet A that communicates with cavity 11, and the bottom, left side of housing 1 is provided with the unloading port 12 that communicates with cavity 11, and the top of housing 1 left end is provided with the repairing mouth 13 that communicates with cavity 11.
During use, oil inlet P is connected with the oil outlet of oil pump, hydraulic pressure delivery outlet A is connected with the filler opening of oil cylinder, and unloading port 12 is connected with fuel tank respectively with repairing mouth 13.
Under the normal state, the male cone (strobilus masculinus) 32 of seal ring 3 seal with the inwall of housing 1 under the elastic force of Fill valve spring 7, the inner conical surface 31 of seal ring 3 under the elastic force of pressure adjusting spring 7 and the conical surface of spool 2 also seal, repairing safety valve at this moment cuts out.
During the oil pump oil-feed, owing to be low pressure oil in the cavity of seal ring left side, high pressure oil makes the seal ring male cone (strobilus masculinus) contact with the housing bore seal, and when pressure oil surpassed the standard-sized sheet pressure of repairing safety valve, the repairing safety valve will be opened.The repairing safety valve at first will have been set up its standard-sized sheet pressure before assembling; Standard-sized sheet pressure is demarcated by designing requirement; Standard-sized sheet pressure with the repairing safety valve is the standard-sized sheet pressure how the 20MPa explanation sets up the repairing safety valve; The repairing safety valve is installed on the special-purpose equipment and safety valve testing table, rotates look nut, the repairing safety valve is opened under the pressure of 20MPa with instrument; Spool and look nut are welded together, and the standard-sized sheet pressure 20MPa of repairing safety valve is identified at the suitable position of look nut.
When the utility model repairing safety valve was used for the safety valve function, pressure oil got into from oil inlet P, when surpassing repairing minimum setting pressure of relief valve 20MPa; High pressure oil overcomes the elastic force of pressure adjusting spring 5, and pressure adjusting spring 5 is compressed, and valve seat 4 is motionless with seal ring 3; Because pressure difference; Promote look nut 6 and move to right together, make the male cone (strobilus masculinus) of the endoporus 31 disengaging spools 2 of seal ring 3, get into unloading port 12 slit of part high pressure oil between spool 2 and seal ring 3 with spool 2; Thereby reduced system pressure, protected system overload.
When being used for the repairing function, when in-oil cylinder hydraulic oil reduced, fluid flowed into repairing mouth 13 from fuel tank; Overcome the pressure of Fill valve spring 7; Because the elastic force value of Fill valve spring 7 is very little,, make the male cone (strobilus masculinus) 32 of seal ring 3 and housing 1 inwall break away from sealing so very little power just can promote spool 2; Get into the slit of fluid between seal ring 3 and housing 1 inwall in the cavity 11, get in the oil cylinder from hydraulic pressure delivery outlet A.
Above-described embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that those of ordinary skills make the technological scheme of the utility model all should fall in the definite protection domain of the utility model claims.
Claims (5)
1. repairing safety valve; It is characterized in that: comprise spool, seal ring, valve seat, pressure adjusting spring, look nut, Fill valve spring, plug screw, suit seal ring, valve seat, pressure adjusting spring are also through look nut locking successively from left to right on the spool, and the two ends of pressure adjusting spring withstand on respectively on valve seat and the look nut; Spool is positioned at the cavity of housing; Plug screw is installed in housing cavity rear end, and plug screw contacts with the ear end face sealing of housing, and the Fill valve spring is set between the rear end of spool and the plug screw; Has the gap between valve seat and the inner walls; The outer surface of seal ring under the elastic force of Fill valve spring with the inwall contact seal of housing, the internal surface of seal ring is under the elastic force of pressure adjusting spring and the outer surface contact seal of spool, the elastic force value of pressure adjusting spring is greater than the elastic force value of Fill valve spring.
2. repairing safety valve according to claim 1; It is characterized in that: said seal ring is provided with endoporus, and outer surface is made as male cone (strobilus masculinus), the inwall contact seal of the male cone (strobilus masculinus) of seal ring and housing; The outer surface of said spool is made as male cone (strobilus masculinus), the male cone (strobilus masculinus) contact seal of the endoporus of seal ring and spool.
3. repairing safety valve according to claim 2 is characterized in that: said plug screw is threaded with housing, and plug screw has cavity, and the rear end of spool is stretched in the cavity of plug screw, and look nut is positioned at the cavity of plug screw.
4. repairing safety valve according to claim 3 is characterized in that: said look nut is through being threaded on the spool.
5. according to each described repairing safety valve of claim 1-4, it is characterized in that: said unloading port is arranged on the bottom of housing left side, and said repairing mouth is arranged on the top of housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203219313U CN202203464U (en) | 2011-08-30 | 2011-08-30 | Oil compensating safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203219313U CN202203464U (en) | 2011-08-30 | 2011-08-30 | Oil compensating safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203464U true CN202203464U (en) | 2012-04-25 |
Family
ID=45967585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203219313U Expired - Lifetime CN202203464U (en) | 2011-08-30 | 2011-08-30 | Oil compensating safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203464U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913382A (en) * | 2012-10-31 | 2013-02-06 | 陕西航天动力高科技股份有限公司 | High-reliability hydraulic motor |
| CN106246971A (en) * | 2016-05-12 | 2016-12-21 | 温州职业技术学院 | One or gate shuttle valve |
| CN112503220A (en) * | 2020-12-21 | 2021-03-16 | 戴勒普(杭州)流体控制科技有限公司 | Adjustable hydraulic oil compensating valve |
-
2011
- 2011-08-30 CN CN2011203219313U patent/CN202203464U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913382A (en) * | 2012-10-31 | 2013-02-06 | 陕西航天动力高科技股份有限公司 | High-reliability hydraulic motor |
| CN102913382B (en) * | 2012-10-31 | 2015-07-29 | 陕西航天动力高科技股份有限公司 | A kind of High-reliability hydraulic motor |
| CN106246971A (en) * | 2016-05-12 | 2016-12-21 | 温州职业技术学院 | One or gate shuttle valve |
| CN112503220A (en) * | 2020-12-21 | 2021-03-16 | 戴勒普(杭州)流体控制科技有限公司 | Adjustable hydraulic oil compensating valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103032612B (en) | Dual-opening-pressure dual-displacement safety valve | |
| CN102086938B (en) | Reducing valve | |
| CN201255257Y (en) | Power constant control valve | |
| CN203322412U (en) | Safety valve for multi-way valve | |
| CN103615420B (en) | A kind of compact type steering wheel special valve group | |
| CN202203464U (en) | Oil compensating safety valve | |
| CN206592537U (en) | A kind of screw plug of draining the oil of the self-styled mechanism of band | |
| CN103453177A (en) | Dual-pipeline hydraulic safety valve | |
| CN204647473U (en) | Explosion-proof special valve | |
| CN201651443U (en) | Double non-return backflow preventer | |
| CN101985990B (en) | Metal bidirectional sealing valve cavity safety relief device | |
| CN202501051U (en) | Electromagnetic control non-return valve | |
| CN101718289A (en) | Double-pipeline explosion protection system | |
| CN102287164B (en) | Control valve for hydraulic well mouth safety valve control system | |
| CN201322016Y (en) | Oil pipe explosion-proof device | |
| CN103697006A (en) | Overload oil replenishing valve for integral multi-path reversing valve | |
| CN205013422U (en) | Stroking mechanism of servo variable pump of hydraulic pressure | |
| CN201836479U (en) | Safety relief device of metal two-way sealing valve cavity | |
| CN213361234U (en) | LNG breaking valve | |
| CN201391658Y (en) | Safe explosion-proof stop valve | |
| CN105422537A (en) | Pressure-increasing overflow valve | |
| CN103423241A (en) | Integrated logic flow block control method and device | |
| CN104180036A (en) | Water injection pump safety valve for oil field | |
| CN204127418U (en) | Oil field water injection pump safety valve | |
| CN104455599A (en) | Safety valve with tubular column structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG HONGYU AGRICULTURAL MACHINERY CO., LTD. Free format text: FORMER NAME: SHANDONG HONGYU MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 261400 No. 99, Wen Quan Dong Road, Laizhou, Shandong, Yantai Patentee after: SHANDONG HONGYU MACHINERY CO., LTD. Address before: 261400 No. 99, Wen Quan Dong Road, Laizhou, Shandong, Yantai Patentee before: Shandong Hongyu Machinery Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120425 |