CN201934109U - Ultra-large-flow safety valve - Google Patents
Ultra-large-flow safety valve Download PDFInfo
- Publication number
- CN201934109U CN201934109U CN2010206765273U CN201020676527U CN201934109U CN 201934109 U CN201934109 U CN 201934109U CN 2010206765273 U CN2010206765273 U CN 2010206765273U CN 201020676527 U CN201020676527 U CN 201020676527U CN 201934109 U CN201934109 U CN 201934109U
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- China
- Prior art keywords
- valve
- spring
- spool
- pressure
- valve seat
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- Expired - Lifetime
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Abstract
The utility model discloses an ultra-large-flow safety valve, which comprises a valve body (1), a pressure adjusting spring (2), a spring seat (3), an adjusting nut (4), a valve spool (5), a joint (6), a left valve seat (7) and a right valve seat (8). The valve spool (5) is provided with valve spool double-row pressure relief holes (9), the valve body (1) is provided with valve body double-row pressure relief holes (10), the pressure adjusting spring (2) is mounted in the valve body (1), the adjusting nut (4) is pressed on one side of the pressure adjusting spring (2), the valve spool (5) is pressed on the other side of the pressure adjusting spring (2) via the spring seat (3), and internal and external circles of springs are combined to form the pressure adjusting spring (2). The ultra-large-flow safety valve adopts the double-row pressure relief holes to release pressure simultaneously, the overall size of the valve spool is reduced, opening and closing motion distance of the valve spool is shortened, and opening and closing property of the safety valve is increased. Simultaneously, the pressure adjusting spring adopts a combination spring mode, so that a common cylindrical spring can realize resetting of the valve spool under high flow and high pressure, and processing difficulty and production cost are reduced.
Description
Technical field
The utility model belongs to the safety valve technical field, particularly a kind of control safety valve that is used to guarantee hydraulic support column jack safety.
Background technology
Safety valve is to keep the hydraulic system safety promptly to guarantee one of most important valve class of safety of hydraulic support.Usually according to flow the safety of coal mines valve is divided into three kinds: less than 16L/min is the low discharge safety valve; 16～100L/min is middle flow safety valve; Greater than 100L/min is high-flow safety valve.In addition, when flow during, be also referred to as the super-flow safety valve greater than 500L/min.
Since year, safety valve has satisfied the requirement of China's coal-mine equipment basically surplus the comprehensive mechanical coal mining technology 30 of China's employing hydraulic support.Present safety valve mainly is made up of valve body, spool, valve seat and pressure spring etc., as shown in Figure 1.Owing to adopt the single row of holes discharge opeing, when flow is big, just need to increase pressure relief vent, the appearance and size of corresponding spool is very big.Simultaneously, the move distance that spool opens and closes is bigger, and the opening and closing performance of safety valve reduces.In addition, higher to the elastic force and the performance requirement of pressure spring in the existing high-flow safety valve because core hydraulic power lifting surface area is big, cause that the spring machining process difficulty is big, cost increases.
The utility model content
Technology of the present utility model is dealt with problems and is, overcomes the deficiencies in the prior art, provides a kind of size super-flow safety valve less, simple in structure.
Technical solution of the present utility model is: a kind of super-flow safety valve, comprise valve body, pressure spring, spring base, adjusting nut, spool, joint, left valve seat and right valve seat, have the double pressure relief vent of spool on the spool, have the double pressure relief vent of valve body on the valve body; A left side valve seat and the right valve seat joint of packing into; Spool inserts the endoporus of left valve seat and right valve seat; Pressure spring is installed in the valve body; Adjusting nut is pressed in pressure spring one side; Spool is pressed in the opposite side of pressure spring by spring base; Joint and valve body are threaded; Described pressure spring is that the spring assembly of inside and outside two circles forms.
Described spool and left valve seat and right valve seat endoporus form movable sealing by sealing ring.
The material of described pressure spring, left valve seat and right valve seat is a copper.
The material of described valve body, spring base, adjusting nut, spool and joint is a stainless steel.
The operating principle of safety valve: the emulsion that surpasses rated pressure in the hydraulic support column oil cylinder promotes spool and is moved to the left; the emulsion of super-pressure sprays to reach the release effect from two row's relief holes; when being discharged to set pressure; the cluster spring acting in conjunction is with valve core reset; both protect the safety of column oil cylinder, and kept the column oil cylinder to maintain high pressure conditions again.
The utility model safety valve beneficial effect compared with prior art is:
(1) flow is big.Safety valve of the present utility model adopts the pressure release simultaneously of double relief hole, has reduced the appearance and size of spool greatly.Simultaneously,, and then reduced the move distance that spool opens and closes, improved the opening and closing performance of safety valve owing to the spool size reduces.
(2) pressure spring of the present utility model adopts the cluster spring form, and by to the selection of material and cluster spring is reasonably designed, make and to adopt the common cylinder spring just can realize big flow, the valve core reset under the pressure greatly, greatly reduce difficulty of processing and cost of production.
Description of drawings
Fig. 1 is the structural representation of prior art safety valve;
Fig. 2 is the schematic diagram of the utility model safety valve.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 2, be super-flow safety valve of the present utility model, comprise valve body 1, pressure spring 2, spring base 3, adjusting nut 4, spool 5, joint 6, left valve seat 7 and right valve seat 8, have the double pressure relief vent 9 of spool on the spool 5, have the double pressure relief vent 10 of valve body on the valve body 1.Wherein pressure spring 2 forms for the spring assembly of inside and outside two circles.
Wherein spool 5 is movable sealing with the sealing ring that is installed on left valve seat 7 and the right valve seat 8.Spool 5 needs to handle by hotlist, improves valve core material hardness and surface roughness.The material selection ordinary copper material of a left side valve seat 7 and right valve seat 8, with improve spool 5 and left valve seat 7 and, frictional property and lubricity between the right valve seat 8.Pressure spring 4 is also selected the ordinary copper material for use, prevents that screw thread is stuck.The stainless steel of the anti-emulsion corrosion of miscellaneous part material selection.
The assembling process of the utility model super-flow safety valve is: left valve seat 7, right valve seat 8 are loaded onto the joint 6 of packing into behind the sealing ring; Spool 5 is inserted the endoporus of left valve seat 7, right valve seat 8.Pressure spring 2 is installed in the valve body 1; Adjusting nut 4 is pressed in pressure spring 2 one sides, and spool 5 is pressed in the opposite side of pressure spring 2 by spring base 3; Joint 6 and valve body 1 are tightened during installation for being threaded.The decision of pressure size, the spring force of setting and the fluid pressure balance that need set up that the setting height(from bottom) of regulating spring 2 is set up by needs.
The operating principle of safety valve: the emulsion that surpasses rated pressure in the hydraulic support column oil cylinder promotes spool 5 and is moved to the left, when the double pressure relief vent 9 of spool moves to when intersecting with the double pressure relief vent of valve body 10, the emulsion of super-pressure sprays from the double pressure relief vent 10 of valve body, to reach the release effect; When being discharged to set pressure, pressure spring 2 actings in conjunction reset spool 5.So both protect the safety of column oil cylinder, and kept the column oil cylinder to maintain high pressure conditions again.
Adopt safety valve flow of the present utility model can reach 1000L, the highest adjustable pressure is 50MPa.
The foregoing description is a kind of enumerating of the present utility model, and those skilled in the art can carry out various improvement and replacing not departing from according to different designing requirements and design parameters under the situation of the present utility model, fall into protection domain of the present utility model equally.
The undocumented technology of the utility model manual belongs to techniques well known.
Claims (4)
1. super-flow safety valve, it is characterized in that: comprise valve body (1), pressure spring (2), spring base (3), adjusting nut (4), spool (5), joint (6), left valve seat (7) and right valve seat (8), have the double pressure relief vent of spool (9) on the spool (5), have the double pressure relief vent of valve body (10) on the valve body (1); Left side valve seat (7) and right valve seat (8) are packed in the joint (6); Spool (5) inserts the endoporus of left valve seat (7) and right valve seat (8); Pressure spring (2) is installed in the valve body (1); Adjusting nut (4) is pressed in pressure spring (2) one sides; Spool (5) is pressed in the opposite side of pressure spring (2) by spring base (3); Joint (6) and valve body (1) are threaded; Described pressure spring (2) forms for the spring assembly of inside and outside two circles.
2. according to a kind of super-flow safety valve of claim 1, it is characterized in that: described spool (5) forms movable sealing with the endoporus of left valve seat (7) and right valve seat (8) by sealing ring.
3. according to a kind of super-flow safety valve of claim 1, it is characterized in that: the material of described pressure spring (2), left valve seat (7) and right valve seat (8) is a copper.
4. according to a kind of super-flow safety valve of claim 1, it is characterized in that: the material of described valve body (1), spring base (3), adjusting nut (4), spool (5) and joint (6) is a stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206765273U CN201934109U (en) | 2010-12-13 | 2010-12-13 | Ultra-large-flow safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206765273U CN201934109U (en) | 2010-12-13 | 2010-12-13 | Ultra-large-flow safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934109U true CN201934109U (en) | 2011-08-17 |
Family
ID=44445631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206765273U Expired - Lifetime CN201934109U (en) | 2010-12-13 | 2010-12-13 | Ultra-large-flow safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934109U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334777A (en) * | 2013-06-25 | 2013-10-02 | 乐清市东风煤矿设备有限公司 | High-flow safety valve with rated working pressure 35-50 MPa |
| CN105401965A (en) * | 2015-09-24 | 2016-03-16 | 北京天地玛珂电液控制系统有限公司 | High-flow safety valve |
-
2010
- 2010-12-13 CN CN2010206765273U patent/CN201934109U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334777A (en) * | 2013-06-25 | 2013-10-02 | 乐清市东风煤矿设备有限公司 | High-flow safety valve with rated working pressure 35-50 MPa |
| CN105401965A (en) * | 2015-09-24 | 2016-03-16 | 北京天地玛珂电液控制系统有限公司 | High-flow safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 611130 Changan Road, Liucheng, Wenjiang District, Chengdu, Sichuan Province, No. 198 Patentee after: Sichuan Aerospace beacon Servo Control Technology Co., Ltd. Address before: 611130 No. 2 letter box in Wenjiang District, Chengdu, Sichuan Patentee before: Fenghuo Machine Works of China Aerospace Science and Technology Corporation |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |
|
| CX01 | Expiry of patent term |