CN105443817A - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN105443817A CN105443817A CN201511027053.3A CN201511027053A CN105443817A CN 105443817 A CN105443817 A CN 105443817A CN 201511027053 A CN201511027053 A CN 201511027053A CN 105443817 A CN105443817 A CN 105443817A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- spool
- end portion
- safety valve
- 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.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to the field of valve bodies, and in particular relates to a safety valve. The safety valve comprises a valve body, a valve element and a valve cover, wherein a cylindrical valve chamber is arranged in the valve body; a limiting cover is arranged on the top part of the valve body; the valve element is mounted in the valve chamber; a tapered sealing surface is arranged in the valve chamber; a sealing head which is in match with the tapered sealing surface is arranged at the lower part of the valve element; the valve element is sleeved with a spring which is arranged between the sealing head and the limiting cover; the upper part of the valve element passes through a limiting cover to be connected with the valve cover which sleeves the valve body; exhausting holes are formed in the sidewall of the valve body; two sealing rings are mounted on the inner wall of the valve cover. According to the safety valve, the valve element can conquer the spring pressure to be propped up when the system pressure exceeds a set value, and the valve element can drive the valve cover to synchronously upwards move to expose the exhausting holes in the valve body, so that the purpose of exhausting air to reduce the system pressure can be achieved; the safety valve is simple in structure, and convenient to mount.
Description
Technical field
The present invention relates to valve body field, particularly a kind of safety valve.
Background technique
Safety valve is in normally off under open-shut device is subject to External Force Acting, when the pressure medium in equipment or pipeline increases to over specified value, exceedes the Special valve of specified value by preventing pressure medium in pipeline or equipment to discharge medium outside system.Safety valve belongs to self-acting valve class, and be mainly used on boiler, pressure vessels and pipes, pilot pressure is no more than specified value, has run important protective action to personal safety and equipment.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of safety valve is provided.
For solving the problem, the invention provides following technological scheme:
A kind of safety valve, comprise valve body, spool and valve gap, be provided with columniform valve pocket in described valve body, the top of valve body is provided with limited cover; Described spool is installed in valve pocket; Conical sealing face is provided with in described valve pocket; Described spool bottom is provided with the sealing head coordinated with conical sealing face; Described valve core upper sleeve is provided with the spring be placed between sealing head and limited cover; The top of described spool is connected with the valve gap be sheathed on outside valve body through limited cover; The sidewall of described valve body is provided with exhaust port; The inwall of described valve gap is provided with two seal rings.
Further, described valve body comprises with externally threaded underpart, with female upper end portion and to be located between upper end portion and underpart and bolt part outwardly; Described exhaust port is located on the sidewall of upper end portion; Described conical sealing face is arranged at the middle part of valve pocket, and the internal diameter of upper end portion is greater than the internal diameter of underpart.
Further, described limited cover is threadedly connected to the top of upper end portion; The central part of described limited cover is provided with through hole, and this through-hole wall is also provided with seal ring.
Further, the top of described spool is provided with the connecting head of rectangular configuration with threaded hole; The seat that to be connected with connecting head is provided with in described valve gap; Described connecting base is provided with the through hole running through valve gap; The outside of described valve gap is provided with the bolt running through connecting base and be threaded with connecting head.
Further, also seal ring is provided with between described connecting head and connecting base.
Further, in described valve gap, the spacing of two seal rings is greater than the diameter of exhaust port.
Beneficial effect: a kind of safety valve of the present invention, when system pressure exceedes setting value, spool overcomes the pressure of spring by jack-up, and spool drives valve gap to move upward simultaneously and the exhaust port on valve body exposed, plays the object that Exhaust Gas reduces system pressure, structure is simple, easy for installation.
Accompanying drawing explanation
Fig. 1 is stereo decomposing structural representation of the present invention;
Fig. 2 is the sectional structure schematic diagram under normally off of the present invention;
Fig. 3 is the sectional structure schematic diagram under opening state of the present invention;
Description of reference numerals: valve body 1, underpart 1a, upper end portion 1b, bolt part 1c, exhaust port 1d, spool 2, sealing head 2a, connecting head 2b, valve gap 3, connecting base 3a, limited cover 4, spring 5, seal ring 6, bolt 7.
Embodiment
Below in conjunction with Figure of description and embodiment, specific embodiments of the invention are described in further detail:
Referring to figs. 1 through a kind of safety valve shown in Fig. 3, comprise valve body 1, spool 2 and valve gap 3, be provided with columniform valve pocket in described valve body 1, the top of valve body 1 is provided with limited cover 4; Described spool 2 is installed in valve pocket; Conical sealing face is provided with in described valve pocket; Described spool 2 bottom is provided with the sealing head 2a coordinated with conical sealing face; Described spool 2 is arranged with the spring 5 be placed between sealing head 2a and limited cover 4; The top of described spool 2 is connected with the valve gap 3 be sheathed on outside valve body 1 through limited cover 4; The sidewall of described valve body 1 is provided with exhaust port 1d; The inwall of described valve gap 3 is provided with two seal rings 6.
Described valve body 1 comprises with externally threaded underpart 1a, with female upper end portion 1b and to be located between upper end portion 1b and underpart 1a and bolt part 1c outwardly; Described exhaust port 1d is located on the sidewall of upper end portion 1b; Described conical sealing face is arranged at the middle part of valve pocket, and the internal diameter of upper end portion 1b is greater than the internal diameter of underpart 1a.
Described limited cover 4 is threadedly connected to the top of upper end portion 1b; The central part of described limited cover 4 is provided with through hole, and this through-hole wall is also provided with seal ring 6.
The top of described spool 2 is provided with the connecting head 2b of rectangular configuration with threaded hole; A 3a that to be connected with connecting head 2b is provided with in described valve gap 3; Described connecting base 3a is provided with the through hole running through valve gap 3; The outside of described valve gap 3 is provided with the bolt 7 running through connecting base 3a and be threaded with connecting head 2b.
Also seal ring 6 is provided with between described connecting head 2b and connecting base 3a.
The spacing of interior two seal rings 6 of described valve gap 3 is greater than the diameter of exhaust port 1d.
It should be noted that, when system pressure is less than the setting value of safety valve, arranged at safety valve is in normally off, and sealing head 2a withstands on conical sealing face by spring 5, realizes the sealing of safety valve.
When system pressure exceedes the setting value of safety valve, spool 2 overcomes the pressure of spring 5 by jack-up, and spool 2 drives valve gap 3 to move upward simultaneously and the exhaust port 1d on valve body 1 exposed, plays the object that Exhaust Gas reduces system pressure.
It should be noted that, the exhaust port 1d on normally off valve body 1, between interior two seal rings 6 of valve gap 3, when valve gap 3 is exposed by exhaust port 1d during top, realizes system pressure release.
The above, it is only preferred embodiment of the present invention, not any restriction is made to technical scope of the present invention, thus every above embodiment is done according to technical spirit of the present invention any trickle amendment, equivalent variations and modification, all still belong in the scope of technological scheme of the present invention.
Claims (6)
1. a safety valve, comprise valve body (1), spool (2) and valve gap (3), it is characterized in that: described valve body is provided with columniform valve pocket in (1), the top of valve body (1) is provided with limited cover (4); Described spool (2) is installed in valve pocket; Conical sealing face is provided with in described valve pocket; Described spool (2) bottom is provided with the sealing head (2a) coordinated with conical sealing face; Described spool (2) is arranged with the spring (5) be placed between sealing head (2a) and limited cover (4); The top of described spool (2) through limited cover (4) be sheathed on valve body (1) valve gap outward (3) and be connected; The sidewall of described valve body (1) is provided with exhaust port (1d); The inwall of described valve gap (3) is provided with two seal rings (6).
2. a kind of safety valve according to claim 1, is characterized in that: described valve body (1) comprises with externally threaded underpart (1a), with female upper end portion (1b) and to be located between upper end portion (1b) and underpart (1a) and bolt part (1c) outwardly; Described exhaust port (1d) is located on the sidewall of upper end portion (1b); Described conical sealing face is arranged at the middle part of valve pocket, and the internal diameter of upper end portion (1b) is greater than the internal diameter of underpart (1a).
3. a kind of safety valve according to claim 2, is characterized in that: described limited cover (4) is threadedly connected to the top of upper end portion (1b); The central part of described limited cover (4) is provided with through hole, and this through-hole wall is also provided with seal ring (6).
4. a kind of safety valve according to claim 2, is characterized in that: the top of described spool (2) is provided with the connecting head (2b) of rectangular configuration with threaded hole; The seat (3a) that to be connected with connecting head (2b) is provided with in described valve gap (3); Described connecting base (3a) is provided with the through hole running through valve gap (3); The outside of described valve gap (3) is provided with the bolt (7) running through connecting base (3a) and be threaded with connecting head (2b).
5. a kind of safety valve according to claim 4, is characterized in that: be also provided with seal ring (6) between described connecting head (2b) and connecting base (3a).
6. a kind of safety valve according to claim 1, is characterized in that: the spacing of interior two seal rings (6) of described valve gap (3) is greater than the diameter of exhaust port (1d).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511027053.3A CN105443817A (en) | 2015-12-31 | 2015-12-31 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511027053.3A CN105443817A (en) | 2015-12-31 | 2015-12-31 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443817A true CN105443817A (en) | 2016-03-30 |
Family
ID=55554334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511027053.3A Pending CN105443817A (en) | 2015-12-31 | 2015-12-31 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443817A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58174769A (en) * | 1982-04-07 | 1983-10-13 | Hitachi Ltd | Automatic return type pressure releasing device for stationary induction apparatus |
| DE9016594U1 (en) * | 1989-12-22 | 1991-02-21 | Walter Stöcklin AG, Aesch | Container for gassing and safety valve for flowable products |
| US5664601A (en) * | 1997-01-14 | 1997-09-09 | Chen; Lin-Shen | Relief valve with abnormal pressure indicator means |
| CN202531940U (en) * | 2012-04-06 | 2012-11-14 | 杭州海的动力机械有限公司 | Engine overflow valve |
| CN103104728A (en) * | 2013-02-04 | 2013-05-15 | 力帆实业(集团)股份有限公司 | Safety valve used for electric automobile |
| CN203823166U (en) * | 2014-04-03 | 2014-09-10 | 北京思瑞德医疗器械有限公司 | Safety valve |
| CN204062045U (en) * | 2014-06-05 | 2014-12-31 | 玉环县和成铜业有限公司 | A kind of carbon dioxide reduction valve |
-
2015
- 2015-12-31 CN CN201511027053.3A patent/CN105443817A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58174769A (en) * | 1982-04-07 | 1983-10-13 | Hitachi Ltd | Automatic return type pressure releasing device for stationary induction apparatus |
| DE9016594U1 (en) * | 1989-12-22 | 1991-02-21 | Walter Stöcklin AG, Aesch | Container for gassing and safety valve for flowable products |
| US5664601A (en) * | 1997-01-14 | 1997-09-09 | Chen; Lin-Shen | Relief valve with abnormal pressure indicator means |
| CN202531940U (en) * | 2012-04-06 | 2012-11-14 | 杭州海的动力机械有限公司 | Engine overflow valve |
| CN103104728A (en) * | 2013-02-04 | 2013-05-15 | 力帆实业(集团)股份有限公司 | Safety valve used for electric automobile |
| CN203823166U (en) * | 2014-04-03 | 2014-09-10 | 北京思瑞德医疗器械有限公司 | Safety valve |
| CN204062045U (en) * | 2014-06-05 | 2014-12-31 | 玉环县和成铜业有限公司 | A kind of carbon dioxide reduction valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170411 Address after: 315000 Ningbo province hi tech Zone, academician Road, No. building, room 66, entrepreneurship, room 189 Applicant after: Ningbo Blizzard Information Technology Development Co., Ltd. Address before: 315000 Yinzhou District, Zhejiang City, the ancient town of Lin Lin Zhang Village Applicant before: NINGBO YINZHOU HUAJIAN VALVE CO., LTD. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |