CN203809801U - Low-temperature full lift safety valve - Google Patents
Low-temperature full lift safety valve Download PDFInfo
- Publication number
- CN203809801U CN203809801U CN201420197017.6U CN201420197017U CN203809801U CN 203809801 U CN203809801 U CN 203809801U CN 201420197017 U CN201420197017 U CN 201420197017U CN 203809801 U CN203809801 U CN 203809801U
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- China
- Prior art keywords
- valve
- spring
- seat
- valve body
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a low-temperature full lift safety valve which comprises a valve body (1), a valve seat (2), a valve deck (3), a valve clack (4) and a back flushing disk (5). The bottom of the valve body (1) is provided with a feed port (9). One side of the valve body (1) is provided with a discharge port (10). The valve seat (2) is mounted on the inner wall of the feed port (9) in a sleeved mode. The valve deck (3) is fixedly mounted on the top of the valve body (1). A spring (6) is arranged in the valve deck (3). An adjusting screw (7) is mounted on the top of the valve deck (3) in a screw thread fit mode. A spring seat (8) is arranged in the valve body (1). The upper end of the spring (6) is fixedly connected with the adjusting screw (7). The lower end of the spring (6) is fixedly connected with the spring seat (8). The lower end of the spring seat (8) is provided with the back flushing disk (5) and the valve clack (4) in one shot. A back flushing tank (14) is arranged on the lower end face of the back flushing disk (5). The low-temperature full lift safety valve has the advantages of being long in service life, high in sensitivity and good in safety.
Description
Technical field
The utility model relates to a kind of Subzero valve, particularly low temperature Fall lift safety valve.
Background technique
Safety valve is that open-shut device is subject under External Force Acting in normally off, when the pressure medium in equipment or pipeline raises while exceeding specified value, prevents that by discharge medium outside system in pipeline or equipment, pressure medium exceedes specified value.Safety valve belongs to self-acting valve class, is mainly used on boiler, pressurized container and pipeline, and pilot pressure is no more than specified value, and personal safety and equipment have been moved to important protective action.Along with the fast development of China's economic construction, more and more with the items of equipment engineering of pressure manipulation.In view of the needs of equipment pressure release, safety valve plays vital effect in protection device procedures.
Safety valve (Subzero valve) is mainly used on the low temperature liquid medium systems such as liquid oxygen (liquid nitrogen, liquid argon), all often to work under particular surroundings, the factors such as the sensitivity of safety valve, sealability, release pressure stability directly affect the using effect of safety valve, major part is Low lift safety valve in the market, the Lift of its valve is low, pressure release is slow, and safety coefficient is low.And its working life is shorter, change valve frequent, the equipment that affects is normally worked.
Model utility content
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of long service life, valve is highly sensitive and Security is good low temperature Fall lift safety valve are provided.
The purpose of this utility model is achieved through the following technical solutions: low temperature Fall lift safety valve, it comprises valve body, valve seat, valve gap, flap and Disc holder, valve body bottom is provided with vertical material feeding mouth, one side of valve body is provided with the discharge port of level, valve seat is sleeved on the inwall of material feeding mouth, valve gap is fixedly mounted on the top of valve body, in valve gap, be provided with spring, the top of valve gap is provided with adjusting screw by screw-thread fit, the inside of valve body is provided with spring seat, the upper end of spring is fixedly connected with adjusting screw, the lower end of spring is fixedly connected with spring seat, the lower end of spring seat is once provided with Disc holder and flap, the lower end surface of Disc holder is provided with recoil groove.
The upper end of described valve seat is also provided with Adjusting ring, and Adjusting ring is connected by screw-thread fit with valve seat, is also provided with Cock screw on the sidewall of valve body, and Cock screw is locked in Adjusting ring on valve seat.
The top of described valve gap is also provided with cap, and cap covers the outside of adjusting screw completely.
Described valve seat and the sealing surface of flap are plane sealing.
The utlity model has following advantage:
1, the sealing surface of valve seat and flap is plane sealing, and plane sealing adopts hard sealing, can ensure that valve is unlikely to impact damage at Open-close sealing face repeatedly, extends the working life of valve.
2, can pass through the release pressure of adjusting screw regulation safety valve, and recoil groove is set in Disc holder, make the repercussion effect of Disc holder more obvious, in the time there is safety valve jumping up phenomenon, can open immediately residual liquid discharge valve and stop other any operations, valve is highly sensitive.
3, on flap, increase Disc holder structure, utilize Disc holder to make to spray air-flow and turn back and obtain larger flap lift, reach and entirely open height, release rapidly, internal system pressure decreased is below setting value, safe.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of Disc holder;
In figure: 1-valve body, 2-valve seat, 3-valve gap, 4-flap, 5-Disc holder, 6-spring, 7-adjusting screw, 8-spring seat, 9-material feeding mouth, 10-discharge port, 11-cap, 12-Adjusting ring, 13-Cock screw, the 14-groove that recoils.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, low temperature Fall lift safety valve, it comprises valve body 1, valve seat 2, valve gap 3, flap 4 and Disc holder 5, valve body 1 bottom is provided with vertical material feeding mouth 9, one side of valve body 1 is provided with the discharge port 10 of level, valve seat 2 is sleeved on the inwall of material feeding mouth 9, valve gap 3 is fixedly mounted on the top of valve body 1, in valve gap 3, be provided with spring 6, the top of valve gap 3 is provided with adjusting screw 7 by screw-thread fit, the inside of valve body 1 is provided with spring seat 8, the upper end of spring 6 is fixedly connected with adjusting screw 7, the lower end of spring 6 is fixedly connected with spring seat 8, the lower end of spring seat 8 is once provided with Disc holder 5 and flap 4, as shown in Figure 2, the lower end surface of Disc holder 5 is provided with recoil groove 14.
The upper end of described valve seat 2 is also provided with Adjusting ring 12, and Adjusting ring 12 is connected by screw-thread fit with valve seat 2, is also provided with Cock screw 13 on the sidewall of valve body 1, and Cock screw 13 is locked in Adjusting ring 12 on valve seat 2.
The top of described valve gap 3 is also provided with cap 11, and cap 11 covers the outside of adjusting screw 7 completely.
Described valve seat 2 is plane sealing with the sealing surface of flap 4.
While not having pressure or pressure not to reach setting value in equipment, spring force acts on flap 4 from top, make it to compress with valve seat 2, along with the generation of pressure in system, producing a counter-force acts on from below on flap 4, if when this power is less than spring force, the difference of two power forms the sealing force between valve seat 2 and flap 4, when in system, pressure rise is to certain numerical value, sealing force reduces to zero, in the time that pressure continues to rise to cracking pressure, flap 4 starts to open, medium is ejection rapidly significantly, after flap 4 is opened, when in system, pressure continues to rise to discharge pressure, the Disc holder 5 increasing on flap 4, utilize Disc holder 5 to make the medium of ejection turn back and make flap 4 obtain larger lift, flap 4 is all opened, discharge specified discharge capacity.Now, the pressure in system reduces gradually, and in the time being reduced to the predetermined value (being closing pressure) that is less than system works pressure, flap 4 is closed, and keeps sealing.
Claims (4)
1. low temperature Fall lift safety valve, it is characterized in that: it comprises valve body (1), valve seat (2), valve gap (3), flap (4) and Disc holder (5), valve body (1) bottom is provided with vertical material feeding mouth (9), one side of valve body (1) is provided with the discharge port (10) of level, valve seat (2) is sleeved on the inwall of material feeding mouth (9), valve gap (3) is fixedly mounted on the top of valve body (1), in valve gap (3), be provided with spring (6), the top of valve gap (3) is provided with adjusting screw (7) by screw-thread fit, the inside of valve body (1) is provided with spring seat (8), the upper end of spring (6) is fixedly connected with adjusting screw (7), the lower end of spring (6) is fixedly connected with spring seat (8), the lower end of spring seat (8) is once provided with Disc holder (5) and flap (4), the lower end surface of Disc holder (5) is provided with recoil groove (14).
2. low temperature Fall lift safety valve according to claim 1, it is characterized in that: the upper end of described valve seat (2) is also provided with Adjusting ring (12), Adjusting ring (12) is connected by screw-thread fit with valve seat (2), on the sidewall of valve body (1), be also provided with Cock screw (13), Cock screw (13) is locked in Adjusting ring (12) on valve seat (2).
3. low temperature Fall lift safety valve according to claim 1, is characterized in that: the top of described valve gap (3) is also provided with cap (11), and cap (11) covers the outside of adjusting screw (7) completely.
4. low temperature Fall lift safety valve according to claim 1, is characterized in that: described valve seat (2) is plane sealing with the sealing surface of flap (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197017.6U CN203809801U (en) | 2014-04-22 | 2014-04-22 | Low-temperature full lift safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197017.6U CN203809801U (en) | 2014-04-22 | 2014-04-22 | Low-temperature full lift safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809801U true CN203809801U (en) | 2014-09-03 |
Family
ID=51448551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420197017.6U Expired - Fee Related CN203809801U (en) | 2014-04-22 | 2014-04-22 | Low-temperature full lift safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809801U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135012A (en) * | 2015-07-17 | 2015-12-09 | 永一阀门集团有限公司 | Device and method for adjusting opening and closing pressure difference of safety valve |
| CN108591553A (en) * | 2018-07-17 | 2018-09-28 | 阜宁县中洲阀门有限公司 | A kind of forged steel bleeder valve |
| CN109163126A (en) * | 2018-11-01 | 2019-01-08 | 恒华阀门有限公司 | High-performance high temperature and pressure safety valve |
| CN109958802A (en) * | 2019-04-26 | 2019-07-02 | 开封市瑞发高中压阀门有限公司 | Low pressure finely tunes built-in dead weight type safety valve |
-
2014
- 2014-04-22 CN CN201420197017.6U patent/CN203809801U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135012A (en) * | 2015-07-17 | 2015-12-09 | 永一阀门集团有限公司 | Device and method for adjusting opening and closing pressure difference of safety valve |
| CN108591553A (en) * | 2018-07-17 | 2018-09-28 | 阜宁县中洲阀门有限公司 | A kind of forged steel bleeder valve |
| CN109163126A (en) * | 2018-11-01 | 2019-01-08 | 恒华阀门有限公司 | High-performance high temperature and pressure safety valve |
| CN109958802A (en) * | 2019-04-26 | 2019-07-02 | 开封市瑞发高中压阀门有限公司 | Low pressure finely tunes built-in dead weight type safety valve |
| CN109958802B (en) * | 2019-04-26 | 2024-04-02 | 开封市瑞发高中压阀门有限公司 | Low-pressure fine-tuning built-in dead weight type safety 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: 20140903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |