CN201554891U - Fire-proof antistatic ball valve - Google Patents
Fire-proof antistatic ball valve Download PDFInfo
- Publication number
- CN201554891U CN201554891U CN2009202128381U CN200920212838U CN201554891U CN 201554891 U CN201554891 U CN 201554891U CN 2009202128381 U CN2009202128381 U CN 2009202128381U CN 200920212838 U CN200920212838 U CN 200920212838U CN 201554891 U CN201554891 U CN 201554891U
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- valve
- ball
- rod
- fire
- core
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Abstract
The utility model relates to a ball valve, in particular to a ball valve with fire-proof and antistatic functions. The utility model aims at providing a ball valve which can effectively eliminate static electricity and has excellent sealing function under the condition of catching fire outside, thereby preventing combustible or poisonous medium from being leaked. The fire-proof antistatic ball valve comprises a valve body, a valve seat, a valve rod, a ball-shaped valve core and a handle, wherein the ball-shaped valve core is arranged in the hollow cavity of the valve body, the valve seat is arranged between the ball-shaped valve core and the valve body, the valve rod penetrates through a mounting hole of the valve body, and is connected with the ball-shaped valve core in a matching way, and the handle is fixedly connected with the top end of the valve rod. The fire-proof antistatic ball valve is characterized in that the valve rod is provided with at least a positioning device which is fixed in a mounting blind hole of the valve rod, and has the beneficial effects that a jacking body guides out static electricity generated through abrading between the valve rod and the valve body and between the vale rod and the ball-shaped valve core, and potential risk of static electricity sparking is eliminated. When the outside is on fire, the valve rod is fixed by the positioning device, the ball-shaped valve core is pushed towards a burned valve seat by medium so as to play a sealing function, and the ball valve prevents flammable or corrosive medium from outwards flowing.
Description
Technical field
The utility model relates to a kind of ball valve, relates in particular to a kind of ball valve with fireproof antistatic function.Be mainly used in industries such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, iron and steel, play the medium that blocks or connect in the pipeline, and the adjusting of fluid and control.
Background technique
Ball valve is owing to have compact structure, sealing is reliable, simple in structure, easy to maintenance, sealing surface and the sphere closed state of being everlasting is difficult for by the medium erosion, advantage such as easy operating and maintenance, be not only applicable to general work media such as water, solvent, acid and rock gas, but also be applicable to the medium that operating conditions is abominable, therefore be widely used in every profession and trade.
Ball valve in the market can satisfy substantially under general situation and produce required sealability.But in case under the situation that shock heating or fire occurs because the teflin ring in the ball valve burnt, make spherical valve core can't with valve seal, thereby cause generation than gross leak.If the medium that is leaked is inflammable or corrosive liquids, not only the intensity of a fire can be encouraged, and the infringement of other manufacturing mechanisms can be caused, cause great economic loss and environmental pollution.
Chinese patent ZL 03266691.8 discloses a kind of ball valve fire resisting construction, and its both sides at spherical valve core 1 are provided with ball pad 2, has the anti-piece 3 of letting out of perforation in the arranged outside one of ball pad, and anti-outer panels of letting out piece 3 is provided with an annular groove, and this annular groove with bore a hole identical.After ball pad 2 was burnt because of high temperature of fire, the anti-piece 3 of letting out utilized the fluid pressure pushing tow displacement to the inside in the annular groove and is close to spherical valve core 1 outside, thereby replaces the ball pad to play seal action.
But often the fluid pressure of spherical valve core 1 inboard will be higher than the pressure in spherical valve core 1 outside, and in this case, the anti-piece 3 of letting out is that the fluid pressure that can't depend merely in the annular groove is close to spherical valve core 1 outside.In addition, this structure can't solve valve rod 4 and break away from and fall in the spherical valve core 1 top groove, and spherical valve core 1 is blocked, and makes spherical valve core 1 to combine closely with valve body, and causes the problem of leaking.
And in the production using process, because valve rod and spherical valve core, and can produce friction between valve rod and the valve body, thus the generation of static caused.If the untimely elimination of static also can cause the generation of fire equivalent risk accident.
Summary of the invention
The purpose of this utility model provides a kind ofly can effectively eliminate static, and has the excellent sealing effect under the situation of catching fire in the external world, thereby prevents ball valve flammable or that poisonous medium leaks.
The utility model is achieved in that a kind of fireproof antistatic ball valve, is made of valve body, valve seat, valve rod, spherical valve core, handle; Described spherical valve core is placed in the cavity of valve body, and valve seat places between spherical valve core and the valve body, and valve rod passes the mount inlet of valve body, and is connected in spherical valve core, and the top of handle and valve rod is connected; It is characterized in that: described valve rod is provided with at least one positioning device, and this positioning device is fixed in the installing blind of valve rod.
Described positioning device is by spring and hold body and constitute, described spring and hold body and be connected.
The inwall of described valve body mount inlet is provided with an annular groove, and the described body that holds is by annular groove and valve body clamping.The cross section of described annular groove is conical, and its tapering is 90 °-120 °.
The described body that holds is steel ball or circular cone steel body.
Described valve seat is a teflon.
The invention has the beneficial effects as follows: by holding the electric action of body, with valve rod and valve body, and the static that grinds generation between valve rod and the spherical valve core derives, thereby eliminated the potential risk of electrostatic fire.In case the external world catches fire, after soft valve seat burnt, positioning device was fixed valve rod, thereby guarantee that spherical valve core can be pushed to the valve seat direction of being burnt by the medium of inside, and closely cooperate with valve body, replace valve seat to play seal action, prevent leaking of inflammable or aggressive medium.
Description of drawings
Fig. 1 is the generalized section of the ball valve of prior art;
Fig. 2 is the generalized section of ball valve of the present utility model;
Fig. 2 is for adopting the generalized section that body is a steel ball that holds of the utility model positioning device;
Fig. 3 is for adopting the generalized section that body is a circular cone steel body that holds of the utility model positioning device.
Specific embodiment
Elaborate to this use is novel below in conjunction with drawings and Examples:
The utility model is a kind of fireproof antistatic ball valve, is made of valve body 1, valve seat 2, valve rod 3, spherical valve core 4, handle 5; Described spherical valve core 4 is placed in the cavity of valve body 1, and valve seat 2 places between spherical valve core 4 and the valve body 1, and valve rod 3 passes the mount inlet of valve body 1, and is connected in spherical valve core 4, and handle 5 is connected with the top of valve rod 3; It is characterized in that: described valve rod is provided with at least one positioning device 6, and this positioning device 6 is fixed in the installing blind of valve rod.Described positioning device is by spring 61 and hold body 62 and constitute, described spring 61 and hold body (62) and be connected.Inwall at valve body 1 mount inlet is provided with an annular groove 11, and the described body 62 that holds is by annular groove 11 and valve body (1) clamping.The cross section of this annular groove 11 is conical, and its tapering is 90 °-120 °.Holding body can be steel ball, also can be circular cone steel body.Valve seat adopts polytetrafluoroethylmaterial material.
When fire took place, the valve seat 2 of polytetrafluoroethylmaterial material was burnt, because the body 62 that holds of positioning device 6 has been stuck in the annular groove 11 of valve body, valve rod 3 was fixed, thereby had been stoped the integral body of valve rod 3 to glide.Make that spherical valve core 4 can be under the pressure of inboard medium, the valve seat direction displacement of being burnt laterally, and directly cooperate with valve body 1 blocks the circulation passage of valve body 1, plays the effect of hard sealing.Make the medium of spherical valve core 4 inboards to flow out, thereby stoped the leakage of medium.
Under the normal state,, when perhaps valve rod 3 produces friction with spherical valve core 4,, can soon fricative static be derived, thereby eliminate the hidden danger of electrostatic fire because the body 62 that holds in the positioning device 6 is metallic material when valve rod 3 and valve body 1.
Claims (6)
1. a fireproof antistatic ball valve is made of valve body (1), valve seat (2), valve rod (3), spherical valve core (4), handle (5); Described spherical valve core (4) is placed in the cavity of valve body (1), valve seat (2) places between spherical valve core (4) and the valve body (1), valve rod (3) passes the mount inlet of valve body (1), and is connected in spherical valve core (4), and handle (5) is connected with the top of valve rod (3); It is characterized in that: described valve rod is provided with at least one positioning device (6), and this positioning device (6) is fixed in the installing blind of valve rod.
2. a kind of fireproof antistatic ball valve according to claim 1 is characterized in that: described positioning device is by spring (61) and hold body (62) and constitute, described spring (61) and hold body (62) and be connected.
3. a kind of fireproof antistatic ball valve according to claim 1 is characterized in that: the inwall of described valve body (1) mount inlet is provided with an annular groove (11), and the described body (62) that holds is by annular groove (11) and valve body (1) clamping.
4. a kind of fireproof antistatic ball valve according to claim 3 is characterized in that: the cross section of described annular groove (11) is for conical, and its tapering is 90 °-120 °.
5. a kind of fireproof antistatic ball valve according to claim 1 and 2 is characterized in that: the described body (62) that holds is steel ball or circular cone steel body.
6. a kind of fireproof antistatic ball valve according to claim 1 is characterized in that: described valve seat (2) is a teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202128381U CN201554891U (en) | 2009-12-09 | 2009-12-09 | Fire-proof antistatic ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202128381U CN201554891U (en) | 2009-12-09 | 2009-12-09 | Fire-proof antistatic ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554891U true CN201554891U (en) | 2010-08-18 |
Family
ID=42614573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202128381U Expired - Fee Related CN201554891U (en) | 2009-12-09 | 2009-12-09 | Fire-proof antistatic ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554891U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307303A (en) * | 2013-07-01 | 2013-09-18 | 自贡信赖泵阀制造有限公司 | Three-position pipeline-cleaning type three-way spherical valve |
| CN112032341A (en) * | 2020-08-20 | 2020-12-04 | 北京动力机械研究所 | Pneumatic valve of explosion-proof type hyperbaric oxygen system |
-
2009
- 2009-12-09 CN CN2009202128381U patent/CN201554891U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307303A (en) * | 2013-07-01 | 2013-09-18 | 自贡信赖泵阀制造有限公司 | Three-position pipeline-cleaning type three-way spherical valve |
| CN112032341A (en) * | 2020-08-20 | 2020-12-04 | 北京动力机械研究所 | Pneumatic valve of explosion-proof type hyperbaric oxygen system |
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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: 20100818 Termination date: 20171209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |