CN205036922U - Special spring safety valve of sealed gas of conical surface - Google Patents
Special spring safety valve of sealed gas of conical surface Download PDFInfo
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- CN205036922U CN205036922U CN201520790890.0U CN201520790890U CN205036922U CN 205036922 U CN205036922 U CN 205036922U CN 201520790890 U CN201520790890 U CN 201520790890U CN 205036922 U CN205036922 U CN 205036922U
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- flap
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Abstract
Special spring safety valve of sealed gas of conical surface, which comprises the following components: a valve body, top -down is equipped with the regulation valve gap in proper order in the valve body, a spring, the spring holder, valve clack cover and sealed piece, adjust valve gap excircle and valve body inner wall threaded connection, valve clack cover bottom center is equipped with the internal thread hole along the vertical direction, valve clack cover bottom outward flange is equipped with the tang limit, sealed piece is including the last double -screw bolt and the lower seal dish that are a body structure, the external diameter of going up the double -screw bolt is less than the external diameter of lower seal dish, go up the double -screw bolt and stretch into interior threaded hole and valve clack cover threaded connection, lower seal dish upper surface impress in the tang limit and with valve clack cover lower surface crimping cooperation. The utility model relates to a rationally, simple structure, round conical sealing surface on the valve body and the sealed facial features cooperation of circular arc on the sealed piece, it is sealed vice to form the conical surface, has improved the sealing performance of relief valve, it is high that the valve clack cover goes up and down direction and vertical stability, action stability can be good, has solved the defect that sealed piece drops, is applicable to the gas system.
Description
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of conical surface seal combustion gas special purpose spring formula safety valve.
Background technique
Safety valve is the upper requisite device of gas burning system (comprising gas pipeline, gaseous-pressure tank).At present, the valve body sealing surface of this safety valve and valve clack sealing surface are all planes, and it coordinates formation plane sealing, and sealing block screw, nut are fixed on flap and put, safety valve action several times after, valve clack sealing surface is just forced out indenture or groove, sealing easily leak; The nut of fixing seal block just there will be loosening or comes off, and causes sealing block to come off, causes seal failure.
Model utility content
The utility model, in order to solve deficiency of the prior art, provides a kind of good seal performance, sealing block difficult drop-off, conical surface seal combustion gas special purpose spring formula safety valve that reliability is strong.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: conical surface seal combustion gas special purpose spring formula safety valve, comprise valve body penetrating up and down, valve body sidepiece is provided with pressure relief opening, valve body lower end is provided with outside thread connecting head, valve body upper end external screw-thread is connected with bonnet, adjustment valve gap is provided with successively from top to bottom in valve body, spring, spring seat, flap cover and sealing block, valve gap cylindrical is regulated to be threaded with valve interior wall, spring upper end and lower end respectively with adjustment valve gap and spring seat top press fit, flap cover top center is provided with groove, the tapered structure in spring seat lower end, spring seat lower end is plugged in groove, flap cover bottom centre is vertically provided with interior threaded hole, flap cover bottom outer edge is provided with seam limit, seam limit is shunk to middle part gradually from top to bottom and is formed the big up and small down conical structure of external form, sealing block comprises upper stud in integrative-structure and lower seal dish, the external diameter of upper stud is less than the external diameter of lower seal dish, upper stud extend in interior threaded hole and is connected with flap thread die cutting, lower seal dish upper surface to be pressed in seam limit and to overlap lower surface press fit with flap, both sides, lower seal dish shaft section lower end are provided with circular arc sealing surface, are provided with up big and down small conical sealing face in valve body, and the arc structure of lower seal dish bottom crimps with conical sealing face and is sealed and matched.
The center line of valve body, spring, spring seat, flap cover and sealing block overlaps.
Regulate bonnet lower surface to be provided with limited ring, spring upper end is positioned at limited ring, and spring seat upper surface is provided with locating column, and locating column is positioned at lower spring end inside.
Adopt technique scheme, it is 40 ° of-60 ° of conical sealing face that valve interior wall is processed into cone angle, the lower seal dish lower edge of sealing block bottom is processed into circular arc sealing surface, after grinding, crimps and form cone seal pair and complete sealing between conical sealing face with circular arc sealing surface.The upper stud of the flap cover interior threaded hole offered of lower end and sealing block upper end forms being threaded of tightening, the seam limit adopting rolling techniques flap to be overlapped lower edge forms up big and down small conical structure, make flap cover and sealing block form fastening combination, prevent sealing block from coming off in the course of the work.Valve gap is regulated to be threaded in valve body and can to adjust to the elastic force of spring (pressure of safety valve).
In sum, the utility model is reasonable in design, structure is simple, conical sealing face on valve body matches with the circular arc sealing surface on sealing block, formation conical surface seal is secondary, improve the sealability of safety valve, flap cover lifting guiding and vertical stability high, having stable behavior performance is good, solve the defect that sealing block comes off, be applicable to gas burning system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged view of linkage structure between flap cover and sealing block in Fig. 1.
Embodiment
As depicted in figs. 1 and 2, conical surface seal combustion gas special purpose spring formula safety valve of the present utility model, comprise valve body 1 penetrating up and down, valve body 1 sidepiece is provided with pressure relief opening 2, valve body 1 lower end is provided with the outside thread connecting head 3 for being connected on gas burning system, valve body 1 upper end external screw-thread is connected with bonnet 4, be provided with successively from top to bottom in valve body 1 and regulate valve gap 5, spring 6, spring seat 7, flap cover 8 and sealing block 17, valve gap 5 cylindrical is regulated to be connected with valve body 1 inner thread, press fit is pushed up with adjustment valve gap 5 and spring seat 7 respectively in spring 6 top and bottom, flap overlaps 8 top center and is provided with groove 9, the tapered structure in spring seat 7 lower end, spring seat 7 lower end is plugged in groove 9, flap overlaps 8 bottom centre and is vertically provided with interior threaded hole, flap overlaps 8 bottom outer edge and is provided with seam limit 10, seam limit 10 is shunk to middle part gradually from top to bottom and is formed the big up and small down conical structure of external form, sealing block 17 comprises upper stud 11 in integrative-structure and lower seal dish 12, the external diameter of upper stud 11 is less than the external diameter of lower seal dish 12, upper stud 11 extend in interior threaded hole and overlaps 8 with flap and be threaded, lower seal dish 12 upper surface to be pressed in seam limit 10 and to overlap 8 lower surface press fit with flap, both sides, lower seal dish 12 shaft section lower end are provided with circular arc sealing surface 15, are provided with up big and down small conical sealing face 16 in valve body 1, and the arc structure of lower seal dish 12 bottom crimps with conical sealing face 16 and is sealed and matched.
The center line of valve body 1, spring 6, spring seat 7, flap cover 8 and sealing block 17 overlaps.
Regulate valve gap 5 lower surface to be provided with limited ring 13, spring 6 upper end is positioned at limited ring 13, and spring seat 7 upper surface is provided with locating column 14, and it is inner that locating column 14 is positioned at spring 6 lower end.
It is 40 ° of-60 ° of conical sealing face 16 that valve body 1 inwall is processed into cone angle, lower seal dish 12 lower edge of sealing block 17 bottom is processed into circular arc sealing surface 15, after grinding, crimp between conical sealing face 16 with circular arc sealing surface 15 and form cone seal pair and complete sealing.Flap overlap interior threaded hole and sealing block 17 upper end offered 8 lower ends upper stud 11 formed tighten be threaded, the seam limit 10 adopting rolling techniques flap to be overlapped 8 lower edge forms up big and down small conical structure, make flap cover 8 and sealing block 17 form fastening combination, prevent sealing block 17 from coming off in the course of the work.The cross section of flap cover 8 is hexagon, and flap overlaps to coordinate between 8 hexagonal cylindricals with valve body 1 inner circle and formed centering pilot effect.Screw or unscrew and regulate valve gap 5 can adjust to the elastic force of spring 6 (pressure of safety valve).
The present embodiment not does any pro forma restriction to shape of the present utility model, material, structure etc.; every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all belong to the protection domain of technical solutions of the utility model.
Claims (3)
1. conical surface seal combustion gas special purpose spring formula safety valve, comprise valve body penetrating up and down, valve body sidepiece is provided with pressure relief opening, valve body lower end is provided with outside thread connecting head, valve body upper end external screw-thread is connected with bonnet, adjustment valve gap is provided with successively from top to bottom in valve body, spring, spring seat, flap cover and sealing block, valve gap cylindrical is regulated to be threaded with valve interior wall, spring upper end and lower end respectively with adjustment valve gap and spring seat top press fit, flap cover top center is provided with groove, the tapered structure in spring seat lower end, spring seat lower end is plugged in groove, it is characterized in that: flap cover bottom centre is vertically provided with interior threaded hole, flap cover bottom outer edge is provided with seam limit, seam limit is shunk to middle part gradually from top to bottom and is formed the big up and small down conical structure of external form, sealing block comprises upper stud in integrative-structure and lower seal dish, the external diameter of upper stud is less than the external diameter of lower seal dish, upper stud extend in interior threaded hole and is connected with flap thread die cutting, lower seal dish upper surface to be pressed in seam limit and to overlap lower surface press fit with flap, both sides, lower seal dish shaft section lower end are provided with circular arc sealing surface, are provided with up big and down small conical sealing face in valve body, and the arc structure of lower seal dish bottom crimps with conical sealing face and is sealed and matched.
2. conical surface seal combustion gas special purpose spring formula safety valve according to claim 1, is characterized in that: the center line of valve body, spring, spring seat, flap cover and sealing block overlaps.
3. conical surface seal combustion gas special purpose spring formula safety valve according to claim 1 and 2, is characterized in that: regulate bonnet lower surface to be provided with limited ring, spring upper end is positioned at limited ring, and spring seat upper surface is provided with locating column, and locating column is positioned at lower spring end inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520790890.0U CN205036922U (en) | 2015-10-14 | 2015-10-14 | Special spring safety valve of sealed gas of conical surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520790890.0U CN205036922U (en) | 2015-10-14 | 2015-10-14 | Special spring safety valve of sealed gas of conical surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205036922U true CN205036922U (en) | 2016-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520790890.0U Active CN205036922U (en) | 2015-10-14 | 2015-10-14 | Special spring safety valve of sealed gas of conical surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205036922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296794A (en) * | 2018-09-20 | 2019-02-01 | 青岛科技大学 | A kind of adjustable slide valve flow controller of precompressed |
-
2015
- 2015-10-14 CN CN201520790890.0U patent/CN205036922U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296794A (en) * | 2018-09-20 | 2019-02-01 | 青岛科技大学 | A kind of adjustable slide valve flow controller of precompressed |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |