CN202188181U - Low-pressure safety valve - Google Patents
Low-pressure safety valve Download PDFInfo
- Publication number
- CN202188181U CN202188181U CN2011202991015U CN201120299101U CN202188181U CN 202188181 U CN202188181 U CN 202188181U CN 2011202991015 U CN2011202991015 U CN 2011202991015U CN 201120299101 U CN201120299101 U CN 201120299101U CN 202188181 U CN202188181 U CN 202188181U
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- valve
- safety valve
- groove
- low
- opening assembly
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Abstract
The utility model discloses a low-pressure safety valve, which comprises a valve body, a valve seat, a valve cover and an opening assembly, the opening assembly comprises a valve clack and a kickback disc, the opposite surfaces of the valve seat and the valve clack are provided with grooves, the valve seat groove and the valve clack groove are arranged to be opposite with each other to form an accumulating groove, the accumulating groove is provided with an accumulating groove opening, the opening assembly also comprises the kickback disc and the valve clack, the valve clack is provided with a chamber corresponding to one side of the valve cover, the inside of the valve cover is provided with a valve rod, the valve rod is connected with a spring, the spring is partially placed in the chamber, the valve body is provided with a plurality of discharge holes, and the discharge holes are uniformly distributed. The utility model is suitable for pressure-bearing devices such as a low pressure vessel and the like, and has the advantages of usability of effectively ensuring the safety valve, simple and convenient design and manufacture, reduced cost, stable valve clack action, balanced discharge force on medium discharge, and the like.
Description
Technical field
The utility model relates to a kind of safety valve, and more particularly, it relates to a kind of low-pressure safety valve.
Background technique
Safety valve is that valve is used in a kind of safety protection; Its open-shut device receives to be in normally off under the external force effect; Pressure medium in equipment or pipeline raises, and opens automatically when surpassing specified value, prevents that through outside system, discharging medium pressure medium surpasses regulation numerical value in pipeline or the equipment.Safety valve belongs to the self-acting valve class, is mainly used on boiler, pressurized container and the pipeline, and pilot pressure is no more than specified value, and personal safety and equipment operation are played important protective action.
Conventional safety valve mainly is made up of parts such as valve body 1, valve seat 2, positioning screwn 3, Adjusting ring 4, flap 5, Disc holder 6, guide sleeve 7, valve rod 8, spring 9, valve gap 10 and adjusting screw rods 12.Suction flange 13 is set on valve body 1, is used for safety valve is installed in bearing devices such as pressurized container.Through adjusting screw rod 12 can Regulation spring pretightening force, the size of pretightening force is regulated according to the cracking pressure of safety valve.Adjusting ring 4 is set on valve seat 2; Between valve seat 2, Adjusting ring 4, flap 5 and Disc holder 6, form one and gather groove 1C, this gathers the complete opening that being provided with of groove 1C helps flap 5, and promptly flap 5 has just been opened when also not having complete opening; Pressure in the valve gets into and gathers groove 1C; The opening that gathers groove 1C is excessive, can cause then that pressure flows out to gather groove 1C, make flap 5 can't be under the pressure of regulation full open; Gather the too small openings of groove 1C, then can make to be trapped in the overpressure of gathering groove 1C the inside, flap 5 can't in time be closed.Adjusting ring 3 adopts with valve seat 4 and is threaded; Through rotation adjusting circle 4 Adjusting ring 4 is moved up and down; Can change the gap between Adjusting ring 4 and the Disc holder 6, the corresponding change gathers the pressure of groove 1C, thereby can change the discharge pressure and the Reseating pressure of a safety valve of safety valve.Positioning screwn 3 is used for fixing Adjusting ring 4, prevents the rotation of Adjusting ring 4 and moves.In order to collect the medium of safety valve discharging, on the valve body of safety valve, be provided with outlet(discharge) flange 13.
The Adjusting ring 4 of conventional safety valve can carry out the manual work adjustment; But general safety valve user of service can not carry out the adjustment of Adjusting ring 4 positions; Even the engineers and technicians of specialty also be could suitable position be adjusted in Adjusting ring 4 positions through continuous test, but the Generally Recognized as safe valve can't be tested accordingly; Therefore; Even the engineers and technicians of specialty also can't confirm the correct position of Adjusting ring 4, but when Adjusting ring 4 positions were in inappropriate position, the performance of safety valve can't be guaranteed.When safety valve is provided with Adjusting ring, the structural design more complicated, manufacture cost is higher.The spring 9 of conventional safety valve is arranged in the valve cover cavity fully, and the height of valve gap 10 is bigger, and the point of action of spring force is far away from flap, has influenced the reliability of flap 5 actions, and the structural design of safety valve is not compact yet.
The spring of conventional safety valve is arranged in the valve cover cavity fully, makes the excessive height of valve gap, has increased the cost of safety valve.Secondly, low-pressure safety valve is used for bearing devices such as low pressure vessel, if the medium that is discharged is pollution-free, does not need usually to collect, owing to be low piezodielectric, directly has no danger to airborne release.Such operating mode is a lot, like employed safety valve etc. on the safety valve that uses on the blower, the low-pressure air jar.Because the medium that emits of safety valve need not collected, so outlet(discharge) flange need not to be provided with, and not only can make the design of safety valve compact more like this, and can also reduce manufacture cost.
Summary of the invention
To the deficiency that existing technology exists, the purpose of the utility model be to provide a kind of easy to use, can effectively guarantee usability and design and make low-pressure safety valve simply and easily.
For realizing above-mentioned purpose; The utility model provides following technological scheme: a kind of low-pressure safety valve, comprise opening assembly, valve body, valve seat and valve gap, and opening assembly includes Disc holder and flap; Be equipped with groove on the opposing side of said valve seat and opening assembly; And valve seat groove and flap groove opposite disposed constitute and to gather groove, and gather groove and be provided with and gather channel opening.
Through adopting technique scheme, cancelled Adjusting ring, directly on flap and valve seat, be provided with and gather groove; This size of gathering groove can be guaranteed through accurate machining; Such design, the user of safety valve need not carry out the adjustment of Adjusting ring, uses convenient; And can not influence the performance of safety valve, and the design of safety valve and make simple more, convenient because of the mistake of Adjusting ring position adjustment.
The utility model further is set to: said opening assembly is provided with the cavity volume of corresponding valve gap one side, and the valve gap set inside has valve rod, and said valve rod is connected with spring, and said spring section places cavity volume inner.
Through adopting technique scheme, made full use of the space on valve body top, can partial spring be arranged on the upper space of valve body; Such design has reduced the height of valve gap on the one hand; Make the structure of safety valve compact more, and can reduce the cost of safety valve, the more important thing is; Reduced spring force and acted on the point of action on the flap, made the action of flap more reliable and more stable.
The utility model further is set to: said flap is provided with the cavity volume of corresponding valve gap one side, and spring section places this cavity volume inner.
Through adopting technique scheme, make that further the action of flap is more stable.
The utility model further is set to: said valve body is provided with the plurality of rows discharge hole, and said discharge orifice evenly distributes.
Through adopting technique scheme, such design makes the structure of safety valve compact more, and, safety valve be through the periphery of valve body discharge orifice to around even discharge medium, when safety valve discharges, can not produce unbalanced discharge force.
Description of drawings
Fig. 1 is the utility model low-pressure safety valve embodiment's a structural representation;
Fig. 2 is the A portion enlarged view of Fig. 1;
Fig. 3 is the structural representation of conventional low-pressure safety valve;
Fig. 4 is the B portion enlarged view of Fig. 3.
Embodiment
Referring to figs. 1 through Fig. 4 the utility model low-pressure safety valve embodiment is further specified.
A kind of low-pressure safety valve; Comprise valve body 1, valve seat 2, valve gap 4 and opening assembly 3; Opening assembly 3 includes Disc holder 31 and flap 32, is equipped with groove on said valve seat 2 and opening assembly 3 opposing sides, and valve seat groove 21 and opening assembly groove 31 opposite disposed; Constitute and to gather groove 1C, gather groove 1C and be provided with and gather channel opening 1CC.The low-pressure safety valve of the utility model has been cancelled Adjusting ring; Directly on opening assembly 3 and valve seat 2, be provided with and gather groove 1C, this gathers groove 1C can be guaranteed such design with the size of gathering channel opening 1CC through accurate machining; The user of safety valve need not carry out the adjustment of Adjusting ring; Use conveniently, and can not influence the performance of safety valve because of the mistake of Adjusting ring position adjustment, and the design of safety valve and make simple more, convenient.
Said opening assembly 3 is provided with the cavity volume 33 of corresponding valve gap 4 one sides, and valve gap 4 set inside have valve rod 41, and said valve rod 41 is connected with spring 42, and said spring 42 parts place cavity volume 33 inside.
The spring 42 of conventional low-pressure safety valve is arranged on the inner chamber of valve gap 4 fully, and the utility model low-pressure safety valve has made full use of the space on valve body 1 top, can partial spring 42 be arranged on the upper space of valve body 1; Such design has reduced the height of valve gap 4 on the one hand; Make the structure of safety valve compact more, and can reduce the cost of safety valve, the more important thing is; Reduced spring force and acted on the point of action on the opening assembly 3, made the action of opening assembly 3 more reliable and more stable.
Said flap 32 is provided with the cavity volume 33 of corresponding valve gap 4 one sides; Spring 42 parts place these cavity volume 33 inside, and (what need explain is here; Can cavity volume 33 be set in a side of Disc holder 31 corresponding valve gaps 4; Make further that for making the action of flap is more stable, present embodiment is preferred, and cavity volume 33 is arranged on the flap 32).
Said valve body 1 is provided with plurality of rows discharge hole 11, and said discharge orifice 11 evenly distributes, and (what need explain is that described discharge orifice 11 can be set to 1 here; For making media discharge more even; Present embodiment is preferred, and discharge orifice 11 is set to several, and evenly distributes).The utility model low-pressure safety valve is used for bearing devices such as low pressure vessel; The medium that is discharged is pollution-free; And do not need to collect,, directly have no danger to airborne release owing to be low piezodielectric; Such operating mode is a lot, like employed safety valve etc. on the safety valve that uses on the blower, the low-pressure air jar.Because the medium that safety valve emits need not collected; Therefore the safety valve of this patent structure does not design outlet(discharge) flange; But many discharge orifices 11 evenly being set at the periphery of valve body, such design makes the structure of safety valve compact more, and; Safety valve be through the periphery of valve body 1 discharge orifice 11 to around even discharge medium, when safety valve discharges, can not produce unbalanced discharge force.
Claims (4)
1. low-pressure safety valve; Comprise opening assembly, valve body, valve seat and valve gap; Opening assembly includes Disc holder and flap, it is characterized in that: be equipped with groove on the opposing side of said valve seat and opening assembly, and valve seat groove and flap groove opposite disposed; Constitute and to gather groove, and gather groove and be provided with and gather channel opening.
2. low-pressure safety valve according to claim 1 is characterized in that: said opening assembly is provided with the cavity volume of corresponding valve gap one side, and the valve gap set inside has valve rod, and said valve rod is connected with spring, and said spring section places cavity volume inner.
3. low-pressure safety valve according to claim 1 and 2 is characterized in that: said flap is provided with the cavity volume of corresponding valve gap one side, and spring section places this cavity volume inner.
4. low-pressure safety valve according to claim 1 and 2 is characterized in that: said valve body is provided with the plurality of rows discharge hole, and said discharge orifice evenly distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202991015U CN202188181U (en) | 2011-08-17 | 2011-08-17 | Low-pressure safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202991015U CN202188181U (en) | 2011-08-17 | 2011-08-17 | Low-pressure safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202188181U true CN202188181U (en) | 2012-04-11 |
Family
ID=45919633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202991015U Expired - Lifetime CN202188181U (en) | 2011-08-17 | 2011-08-17 | Low-pressure safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202188181U (en) |
Cited By (1)
| 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 |
-
2011
- 2011-08-17 CN CN2011202991015U patent/CN202188181U/en not_active Expired - Lifetime
Cited By (1)
| 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 |
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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: CHAODA VALVE GROUP CO., LTD. Free format text: FORMER NAME: ZHEJIANG CHAODA VALVE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Jiangbei Avenue Oubei town of Yongjia County of Wenzhou City, Zhejiang province 325000 Patentee after: Chaoda Valve Group Co., Ltd. Address before: Jiangbei Avenue Oubei town of Yongjia County of Wenzhou City, Zhejiang province 325000 Patentee before: Zhejiang Chaoda Valve Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |
|
| CX01 | Expiry of patent term |