CN201262258Y - Self-closing valve - Google Patents
Self-closing valve Download PDFInfo
- Publication number
- CN201262258Y CN201262258Y CNU2008201635755U CN200820163575U CN201262258Y CN 201262258 Y CN201262258 Y CN 201262258Y CN U2008201635755 U CNU2008201635755 U CN U2008201635755U CN 200820163575 U CN200820163575 U CN 200820163575U CN 201262258 Y CN201262258 Y CN 201262258Y
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- CN
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- Prior art keywords
- valve
- valve body
- air outlet
- self closing
- closing stop
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- 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.)
- Expired - Lifetime
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Abstract
The utility model provides a self-closing valve, belongs to the technical field of valves, and solves the technical problems of the prior self-closing valve, such as poor use safety, complex structure, etc. The self-closing valve of the utility model comprises a valve body provided with an air inlet and an air outlet; a hollow cavity communicated with the air inlet and the air outlet is formed in the valve body; and a round ball is arranged in the hollow cavity and can push against the inner end opening of the water outlet when the pressure of medium in the hollow cavity exceeds a preset pressure value. The utility model has the advantages of simple structure, convenient use, high safety factor, etc.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of self closing stop valve that is used for gas combustion apparatus.
Background technique
In recent years; rock gas, coal gas act as a fuel and enter family more and more; various domestic gas equipment also increase thereupon; but home-use combustion gas tool does not all have any safety protection device from gas supply line to various burning appliances; thereby the accident that combustion gas leaks outside, poisons or explodes happens occasionally, and particularly in air feed instability, the frequent area of stopping the supple of gas or steam, regular meeting is because of taking place in the burning: stop the supple of gas or steam, stop working, air feed; leak outside and produce combustion gas, cause accident.
In order to address this problem, Chinese patent (notice of authorization CN2135705Y) discloses a kind of self closing stop valve of stopping the supple of gas or steam, include valve body and valve gap, suction port and air outlet are arranged on valve body, above suction port and air outlet, there are an elasticity valve plug and reset key affixed, are with Returnning spring asking of reset key and elasticity valve plug.
This patent is an elastic force of utilizing spring less than suction port, air outlet jointly to the pressure of elasticity valve plug and realize stopping the supple of gas or steam self-closing greater than air outlet pressure separately.But self closing stop valve is mounted in different places, be difficult to determine the pressure of suction port, and spring force is difficult calculates, and when spring force less than air outlet pressure separately the time, this self closing stop valve can't normally be realized stopping the supple of gas or steam automatically.
Summary of the invention
The purpose of this utility model is to have above technical problem at existing self closing stop valve, provides a kind of simple in structure, and easy operating is safe in utilization, when pressure surpasses the self closing stop valve that setting value can be closed automatically.
The purpose of this utility model can realize by following technical proposal: a kind of self closing stop valve, comprise valve body with inlet hole and air outlet hole, it is characterized in that, in valve body, have the cavity that communicates with inlet hole and air outlet hole, but in cavity, be provided with the ball of roof pressure on the air outlet hole inner port when the pressure of medium in the cavity surpasses setup pressure value.
This self closing stop valve is that inlet hole is with the air outlet hole level and communicate in the original state of using, when the pressure of medium in the valve body surpasses the force value of setting, the active force that pressure produces overcomes the gravity of ball self, make the ball roof pressure on the inner of air outlet hole, air outlet hole is sealed, the safety of using is guaranteed in the circulation of blocking-up medium; When pressure recovery just often, roof pressure can fall back under action of gravity in the cavity again automatically at the ball on air outlet hole the inner, inlet hole and air outlet hole continue conducting again.
In above-mentioned self closing stop valve, described valve body is provided with and can makes the ball of roof pressure on the air outlet hole inner port detach the hand reset mechanism of pore inner port.
In above-mentioned self closing stop valve, described hand reset mechanism comprises bonnet, valve rod, is enclosed within valve rod outer connecting body and Returnning spring, connecting body is fixed on the valve body, above-mentioned valve rod and connecting body are slidingly connected, and cavity can be stretched in the inner of valve rod, and the outer end of valve rod passes connecting body and above-mentioned bonnet is connected, and is with Returnning spring outside valve rod, one end of described Returnning spring acts on the bonnet, and the other end acts on the connecting body.
Under the normal situation of pressure recovery, ball does not fall back in the cavity automatically, can ball be carried out hand reset by this mechanism, and be arranged on in-house Returnning spring, can automatically hand reset mechanism be resetted.
In above-mentioned self closing stop valve, have the mounting hole that communicates with cavity on the described valve body, the aperture of mounting hole is greater than the diameter of ball, and above-mentioned connecting body is arranged on the mounting hole.When ball is installed, as long as connecting body is opened, just can pass through mounting hole, ball is installed in the cavity.
In above-mentioned self closing stop valve, also be provided with seal ring one between described connecting body and the valve rod, between connecting body and valve body, also be provided with seal ring four.Between connecting body and valve rod, establish seal ring one, between connecting body and valve body, be provided with seal ring four, guarantee the sealing between connecting body and valve rod, the valve body.
In above-mentioned self closing stop valve, described valve body air outlet hole is provided with a joint with outlet passageway, is provided with seal ring three in the inner of outlet passageway, but above-mentioned ball roof pressure is on seal ring three.Guarantee that by seal ring three ball can seal up air outlet hole fully.
Another situation, in above-mentioned self closing stop valve, described valve body air outlet hole inner port is provided with seal ring three, but above-mentioned ball roof pressure is on seal ring three.
In above-mentioned self closing stop valve, by being threaded, and between joint and valve body, be provided with seal ring two between above-mentioned joint and the valve body.Valve body air outlet hole and joint make things convenient for self closing stop valve to link to each other with other gas combustion apparatus by being threaded, and between is provided with seal ring two, prevents gas leakage.
In above-mentioned self closing stop valve, be provided with the two rows buckle between the inlet hole of described valve body and the cavity, between buckle, be provided with filter screen.Filter screen can filter out other impurity in the coal gas, prevents that impurity from stopping up self closing stop valve.
Compared with prior art, this self closing stop valve has the following advantages:
1, is provided with the ball that to close air outlet hole automatically, coefficient height simple in structure, easy to use, safe in the cavity in this self closing stop valve valve body.
2, this self closing stop valve valve body is provided with hand reset mechanism, and under the normal situation of pressure recovery, ball does not fall back in the cavity automatically, can ball be carried out hand reset by this mechanism, and is easy to use, simple.
3, the valve body of this self closing stop valve is provided with the joint by being threaded, and by joint self closing stop valve is linked together in other gas combustion apparatus.
Description of drawings
Fig. 1 is the sectional view that this self closing stop valve ball detaches the pore inner port.
Fig. 2 is the sectional view of this self closing stop valve ball roof pressure in the air outlet hole inner port.
Among the figure, 1, valve body; 2, inlet hole; 3, air outlet hole; 4, cavity; 5, ball; 6, valve rod; 7, bonnet; 8, Returnning spring; 9, connecting body; 10, seal ring one; 11, joint; 12, buckle; 13, filter screen; 14, seal ring two; 15, seal ring three; 16, seal ring four.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment one:
As shown in Figure 1, a kind of self closing stop valve, comprise and have inlet hole 2 and air outlet hole 3 respectively on valve body 1 and joint 9, have the cavity 4 that communicates with inlet hole 2 and air outlet hole 3 in valve body 1, be provided with ball 5 in cavity 4 when the pressure of medium in the valve body 1 surpasses the force value of setting, the active force that pressure produces overcomes the gravity of ball 5 self, make ball 5 roof pressures on the inner of air outlet hole 3, with air outlet hole 3 sealings, the safety of using is guaranteed in the circulation of blocking-up medium; When pressure recovery just often, the ball 5 of roof pressure on air outlet hole 3 the inners can fall back under action of gravity in the cavity 4 again automatically, inlet hole 2 continues conducting again with air outlet hole 3.
Be provided with hand reset mechanism on valve body 1, this mechanism can make ball 5 fall back in the cavity 4.This hand reset mechanism comprises valve rod 6, bonnet 7, connecting body 11 and Returnning spring 8, valve rod 6 is located in the connecting body 11, valve rod 6 is slidingly connected with connecting body 11, the inner of valve rod 6 can enter cavity 4, the outer end of valve rod 6 extends to outside the valve body 1 and with bonnet 7 and is connected, be with Returnning spring 8 on valve rod 6, an end of Returnning spring 8 acts on the bonnet 7, and the other end acts on the valve body 1.When pressure recovery is normal, ball 5 does not fall back in the cavity 4 automatically, can ball 5 be carried out hand reset by this mechanism, the circulation of medium when ensureing pressure recovery; And be arranged on in-house Returnning spring 8, can automatically hand reset mechanism be resetted.
Have the mounting hole that communicates with cavity 4 on the valve body 1 of self closing stop valve, be provided with a joint 9 on mounting hole, by being threaded, between is provided with seal ring 2 14, and adds glue, plays double seal and fixed installation.When ball 5 is installed, as long as joint 9 is opened, just can pass through mounting hole, ball 5 is installed in the cavity 4.Be fixedly mounted on the air outlet hole 3 being provided with seal 3 15 on the self closing stop valve joint 9, guarantee that by sealing circle 3 15 balls 5 can seal up air outlet hole 3 fully, ensure the safe in utilization of self closing stop valve.Also be provided with connecting body 11 mounting holes on the self-closing valve body 1, connecting body 11 is by being threaded onto on the valve body 1, and between is provided with seal ring 4 16, and adds glue, plays double seal and fixed installation.Be provided with two rows buckle 12 between the inlet hole 2 of valve body 1 and the cavity 4, be provided with filter screen 13 between buckle 12, filter screen 13 can filter out other impurity in the coal gas, prevents that impurity from stopping up self closing stop valve.
Embodiment two
Embodiment two content and embodiment's one content basically identical, different is not to be provided with seal ring on the joint 11 of valve body 1, but is provided with seal ring on the inner of air outlet hole 3, guarantees that ball 5 seals up air outlet hole 3 fully.
Claims (9)
1, a kind of self closing stop valve, the valve body that comprises have inlet hole (2) and air outlet hole (3), it is characterized in that, in valve body (1), have the cavity (4) that communicates with inlet hole (2) and air outlet hole (3), in cavity (4), be provided with when cavity (4) but in the pressure of the medium ball (5) of roof pressure on air outlet hole (3) inner port when surpassing setup pressure value.
2, self closing stop valve according to claim 1 is characterized in that, described valve body (1) is provided with and can makes the ball (5) of roof pressure on air outlet hole (3) inner port detach the hand reset mechanism of pore (3) inner port.
3, self closing stop valve according to claim 2, it is characterized in that, described hand reset mechanism comprises bonnet (7), valve rod (6), be enclosed within valve rod (6) outer connecting body (9) and Returnning spring (8), connecting body (9) is fixed on the valve body (1), above-mentioned valve rod (6) is slidingly connected with connecting body (9), and cavity (4) can be stretched in the inner of valve rod (6), the outer end of valve rod (6) passes connecting body (9) and is connected with above-mentioned bonnet (7), outside valve rod (6), be with Returnning spring (8), one end of described Returnning spring (8) acts on the bonnet (7), and the other end acts on the connecting body (9).
4, self closing stop valve according to claim 3 is characterized in that, has the mounting hole that communicates with cavity (4) on the described valve body (1), and the aperture of mounting hole is greater than the diameter of ball (5), and above-mentioned connecting body (9) is arranged on the mounting hole.
5, according to claim 3 or 4 described self closing stop valves, it is characterized in that, also be provided with seal ring one (10) between described connecting body (9) and the valve rod (6), between connecting body (9) and valve body (1), also be provided with seal ring four (16).
6, self closing stop valve according to claim 1 and 2, it is characterized in that, described valve body (1) air outlet hole (3) is provided with a joint (11) with outlet passageway, is provided with seal ring three (15) in the inner of outlet passageway, above-mentioned ball (5) but roof pressure on seal ring three (15).
7, self closing stop valve according to claim 1 and 2 is characterized in that, described valve body (1) air outlet hole (3) inner port is provided with seal ring three (15), above-mentioned ball (5) but roof pressure on seal ring three (15).
8, self closing stop valve according to claim 6 is characterized in that, by being threaded, and is provided with seal ring two (14) between joint (11) and valve body (1) between described joint (11) and the valve body (1).
9, according to claim 1 or 2 or 3 or 4 described self closing stop valves, it is characterized in that, be provided with two rows buckle (12) between the inlet hole (2) of described valve body (1) and the cavity (4), between buckle (12), be provided with filter screen (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201635755U CN201262258Y (en) | 2008-08-29 | 2008-08-29 | Self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201635755U CN201262258Y (en) | 2008-08-29 | 2008-08-29 | Self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262258Y true CN201262258Y (en) | 2009-06-24 |
Family
ID=40808731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201635755U Expired - Lifetime CN201262258Y (en) | 2008-08-29 | 2008-08-29 | Self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262258Y (en) |
-
2008
- 2008-08-29 CN CNU2008201635755U patent/CN201262258Y/en not_active Expired - Lifetime
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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: ZHEJIANG SUMING VALVE CO., LTD. Free format text: FORMER NAME: TAIZHOU SUMING VALVE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 113, Cheng Cheng Road, Chengguan Town, Zhejiang, Yuhuan County Province, 317600 Patentee after: Zhejiang Suming Valves Co., Ltd. Address before: No. 113, Cheng Cheng Road, Chengguan Town, Zhejiang, Yuhuan County Province, 317600 Patentee before: Taizhou Suming Valves Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090624 |