CN205260900U - Fire and static prevention ball valve - Google Patents
Fire and static prevention ball valve Download PDFInfo
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- CN205260900U CN205260900U CN201521109891.0U CN201521109891U CN205260900U CN 205260900 U CN205260900 U CN 205260900U CN 201521109891 U CN201521109891 U CN 201521109891U CN 205260900 U CN205260900 U CN 205260900U
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- spheroid
- fire
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- valve body
- valve rod
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Abstract
The utility model provides a fire and static prevention ball valve. Main to solve the sealed effect of current fire prevention ball valve not good, moreover easy static problem on fire. Its characterized in that: be equipped with the ring channel of installation disk seat in the valve body, disk seat and spheroid soft seal cooperation, ring channel inner circle and ball sealing cooperation are with spheroiding cooperation sealed firmly, at least, be equipped with two antistatic device of group on the valve rod, wherein have a set of antistatic device and spheroid contact at least, have a set of antistatic device and valve body contact at least. Its advantage lies in using the soft seal to combine together with sealing firmly, and sealed effect is better, in case the disk seat that burns out on fire, its sealed effect can be guaranteed to hard the sealing between valve body and the spheroid, preventing leakage, and the effect is better, all set up antistatic device in addition between valve rod and valve body, spheroid, static direction valve body, the spheroid that can produce rubbing, static elimination hidden danger on fire better.
Description
Technical field
The utility model relates to a kind of ball valve, is specifically related to a kind of fire-proof antistatic ball valve.
Background technology
At present, all can use fire-proof ball valve in industries such as oil, natural gas, chemical industry, traditional fire-proof ball valve generally includes valve body, valve seat, valve rod and spheroid, and valve rod one end is fixedly connected with spheroid through valve body, and the other end arranges handle.
But this fire-proof ball valve sealing effectiveness is bad, once and valve seat a little on fire, will cause pipe leakage. Conventionally fire-proof ball valve, without anti-static device, easily produces static and catches fire when use in addition.
Utility model content
In order to overcome the deficiency of background technology, the utility model provides a kind of fire-proof antistatic ball valve, solves existing fire-proof ball valve sealing effectiveness bad, and the problem of easy electrostatic fire.
The technical scheme that the utility model adopts: a kind of fire-proof antistatic ball valve, comprise valve body, valve seat, valve rod, spheroid, described spheroid, valve seat are arranged in valve body, and described spheroid both sides coordinate with valve base sealing; Described valve body is provided with valve rod hole, and described valve rod one end is connected through valve rod hole and spheroid, and the other end arranges external screw thread, and spacing by nut axial locking; In described valve body, be provided with the cannelure that valve seat is installed, described valve seat coordinates with spheroid soft seal; Described cannelure inner ring coordinates with ball seal, forms firmly and is sealed and matched with spheroid; On described valve rod, be at least provided with two groups of anti-static devices, wherein have at least one group of anti-static device to contact with spheroid, have at least one group of anti-static device to contact with valve body.
Described valve seat comprises the sealing coordinating with ball seal and the installation portion coordinating with cannelure, and described sealing is cone structure.
Described installation portion inner ring arranges chamfering, the described cannelure setting inclined-plane corresponding with installation portion chamfering.
Described valve seat adopts polytetrafluoroethylene (PTFE).
Described anti-static device comprises spring, metal ball, and described valve rod is provided with resettlement groove, and described spring, metal ball are successively set in mounting groove.
Described anti-static device is provided with two groups altogether.
Described valve rod arranges externally threaded one end and cuts two parallel planes along valve rod axis direction, and described nut overcoat is provided with the positioning sleeve that can block nut, and described positioning sleeve center is provided with microscler locating slot, and described locating slot matches with the plane of valve rod.
Described nut is hex nut, and described positioning sleeve is dodecagon.
The beneficial effects of the utility model are: adopt above scheme, use soft seal and hard sealing to combine, sealing effectiveness is better, burns valve seat once on fire, and the hard sealing between valve body and spheroid can ensure its sealing effectiveness, prevents from revealing better effects if; Between valve rod and valve body, spheroid, anti-static device is all set in addition, can, by fricative static guiding to valve body, spheroid, can eliminates better the hidden danger of electrostatic fire.
Brief description of the drawings
Fig. 1 is the utility model example structure schematic diagram.
Fig. 2 is the enlarged diagram at A place in Fig. 1.
Fig. 3 is the local enlarged diagram of the utility model embodiment valve seat.
Fig. 4 is the utility model embodiment valve rod, nut, positioning sleeve cooperation schematic diagram.
Fig. 5 is the utility model embodiment stem structure schematic diagram.
Fig. 6 is the utility model embodiment locating sleeve structure schematic diagram.
1-valve body in figure, 11-cannelure, 2-valve seat, 21-sealing, 22-installation portion, 3-valve rod, 31-mounting groove, 32-plane, 4-spheroid, 5-spring, 6-metal ball, 7-nut, 8-positioning sleeve, 81-locating slot.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in the figure, a kind of fire-proof antistatic ball valve, comprises valve body 1, valve seat 2, valve rod 3, spheroid 4, and described spheroid 4, valve seat 2 are arranged in valve body 1, and described spheroid 4 both sides and valve seat 2 are sealed and matched; Described valve body 1 is provided with valve rod hole, and described valve rod 3 one end are connected through valve rod hole and spheroid 4, and the other end arranges external screw thread, and spacing by nut 7 axial lockings; In described valve body 1, be provided with the cannelure 11 that valve seat 2 is installed, described valve seat 2 coordinates with spheroid 4 soft seals; Described cannelure 11 inner rings and spheroid 4 are sealed and matched, and form firmly and are sealed and matched with spheroid 4; Wherein valve seat adopts polytetrafluoroethylmaterial material, has higher resistance to elevated temperatures,
Soft seal and hard sealing are combined, and sealing effectiveness is better, once the while valve seat that burnt on fire, the hard sealing between valve body and spheroid can ensure its sealing effectiveness, prevents from revealing better effects if.
Described valve rod 3 is provided with two groups of anti-static devices, wherein one group of anti-static device contacts with spheroid 4, another group anti-static device contacts with valve body 3, between valve rod and valve body, spheroid, anti-static device is all set, can, by fricative static guiding to valve body, spheroid, can eliminate better the hidden danger of electrostatic fire.
Wherein, described anti-static device comprises spring 5, metal ball 6, and described valve rod 3 is provided with resettlement groove 31, and described spring 5, metal ball 6 are successively set in mounting groove 31.
As shown in the figure, described valve seat 2 comprises the sealing 21 being sealed and matched with spheroid 4 and the installation portion 22 coordinating with cannelure 11, and described sealing 21 is cone structure, conical surface seal better effects if.
As shown in the figure, described installation portion 22 inner rings arrange chamfering, and described cannelure 11 arranges the inclined-plane corresponding with installation portion chamfering, and it is easier to install.
As shown in the figure, described valve rod 3 arranges externally threaded one end and cuts two parallel planes 32 along valve rod 3 axis directions, described nut 7 is hex nut, and be arranged with positioning sleeve 8, described positioning sleeve 8 is dodecagon, Qie Qi center is provided with microscler locating slot 81, after positioning sleeve is enclosed within on nut, its elongate slots matches spacing with the plane 32 of valve rod 3, its dodecagon and hex nut are stuck, thereby effectively avoid nut because screw rod rotates the loosening problem of operation for a long time, further ensure its sealing effectiveness, improve service life.
Embodiment should not be considered as the restriction to utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (8)
1. a fire-proof antistatic ball valve, comprises valve body (1), valve seat (2), valve rod (3), spheroid (4), and described spheroid (4), valve seat (2) are arranged in valve body (1), and described spheroid (4) both sides and valve seat (2) are sealed and matched;
Described valve body (1) is provided with valve rod hole, and described valve rod (3) one end is connected through valve rod hole and spheroid (4), and the other end arranges external screw thread, and spacing by nut (7) axial locking;
It is characterized in that: in described valve body (1), be provided with the cannelure (11) that valve seat (2) is installed, described valve seat (2) coordinates with spheroid (4) soft seal; Described cannelure (11) inner ring and spheroid (4) are sealed and matched, and form and are firmly sealed and matched with spheroid (4);
On described valve rod (3), be at least provided with two groups of anti-static devices, wherein have at least one group of anti-static device to contact with spheroid (4), have at least one group of anti-static device to contact with valve body (3).
2. fire-proof antistatic ball valve according to claim 1, it is characterized in that: described valve seat (2) comprises the sealing (21) being sealed and matched with spheroid (4) and the installation portion (22) coordinating with cannelure (11), and described sealing (21) is cone structure.
3. fire-proof antistatic ball valve according to claim 2, is characterized in that: described installation portion (22) inner ring arranges chamfering, and described cannelure (11) arranges the inclined-plane corresponding with installation portion chamfering.
4. fire-proof antistatic ball valve according to claim 1, is characterized in that: described valve seat (2) adopts polytetrafluoroethylene (PTFE).
5. fire-proof antistatic ball valve according to claim 1, it is characterized in that: described anti-static device comprises spring (5), metal ball (6), described valve rod (3) is provided with resettlement groove (31), and described spring (5), metal ball (6) are successively set in mounting groove (31).
6. fire-proof antistatic ball valve according to claim 5, is characterized in that: described anti-static device is provided with two groups altogether.
7. fire-proof antistatic ball valve according to claim 1, it is characterized in that: described valve rod (3) arranges externally threaded one end and cuts two parallel planes (32) along valve rod (3) axis direction, the outer positioning sleeve (8) that can block nut that is arranged with of described nut (7), described positioning sleeve (8) center is provided with microscler locating slot (81), and described locating slot (81) matches with the plane (33) of valve rod (3).
8. fire-proof antistatic ball valve according to claim 7, is characterized in that: described nut (7) is hex nut, and described positioning sleeve (8) is dodecagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521109891.0U CN205260900U (en) | 2015-12-29 | 2015-12-29 | Fire and static prevention ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521109891.0U CN205260900U (en) | 2015-12-29 | 2015-12-29 | Fire and static prevention ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260900U true CN205260900U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521109891.0U Active CN205260900U (en) | 2015-12-29 | 2015-12-29 | Fire and static prevention ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205260900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286877A (en) * | 2016-09-08 | 2017-01-04 | 苏州纽威阀门股份有限公司 | A kind of from pressure release fire prevention floating ball valve |
-
2015
- 2015-12-29 CN CN201521109891.0U patent/CN205260900U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286877A (en) * | 2016-09-08 | 2017-01-04 | 苏州纽威阀门股份有限公司 | A kind of from pressure release fire prevention floating ball valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |