CN215568241U - Overflow closing valve for gas self-closing valve - Google Patents
Overflow closing valve for gas self-closing valve Download PDFInfo
- Publication number
- CN215568241U CN215568241U CN202121904841.7U CN202121904841U CN215568241U CN 215568241 U CN215568241 U CN 215568241U CN 202121904841 U CN202121904841 U CN 202121904841U CN 215568241 U CN215568241 U CN 215568241U
- Authority
- CN
- China
- Prior art keywords
- closing valve
- connecting cover
- air outlet
- convex ring
- gas
- 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.)
- Active
Links
Images
Abstract
The utility model provides an overflow closing valve for a gas self-closing valve, belonging to the technical field of valves. It has solved the not enough problem of suitability that intake flow can't adjust the cause. The sealing device comprises a cylindrical body with an inner cavity, wherein an air inlet is formed in one end of the body, an air outlet is formed in the other end of the body, a sealing assembly capable of separating the air inlet from the air outlet when the air inlet pressure exceeds a set value is connected in the body in a sliding mode, a connecting cover is detachably connected to one end portion of the body, which is provided with the air outlet, and covers the air outlet, and an air passing hole communicated with the air outlet is formed in the connecting cover in a penetrating mode. It has the advantages of wide applicability, convenient operation, low production cost and the like.
Description
Technical Field
The utility model belongs to the technical field of valves, and relates to a gas self-closing valve, in particular to an overflow closing valve for the gas self-closing valve.
Background
The fuel gas is a widely used gas fuel, and because the fuel gas has the characteristics of inflammability, explosiveness, poisoning and the like, if the fuel gas leaks, serious safety accidents are easily caused, and therefore the fuel gas entering the combustion appliance needs to be ensured to be kept at normal pressure so as to be combusted fully and stably. At present, a gas self-closing valve is installed in front of a gas appliance, so that the valve is automatically closed when overpressure or underpressure occurs, and gas leakage is prevented.
For example, patent application No. 202010032564.9 discloses a gas pipeline self-closing valve, it includes the valve body, the passageway that supplies the gas to pass through that runs through in the valve body, be provided with the metal pull rod and the first magnet that all can reciprocate in the passageway, first magnet is located the below of metal pull rod, and first magnet passes through the screw and links firmly with the cassette, be provided with a breach on the cassette, the rigid coupling has the second magnet in the breach, the metal pull rod passes through magnetic force and first magnet, the second magnet, the cassette links to each other, be provided with in the passageway and can be with passageway confined sealing member, the one end rigid coupling of sealing member has the third magnet, the third magnet faces partial second magnet. When the pressure of the gas in the valve body is smaller than the preset minimum value, the pull rod, the first magnet, the second magnet and the clamping seat fall under the influence of the gravity of the clamping seat and the magnetic force of the first magnet and the iron sheet, and the second magnet attracts the third magnet to slide towards the direction close to the second magnet, so that the sealing element seals the channel; be provided with in the one end that the passageway admits air and be equipped with the isolated mechanism that can seal the passageway, isolated mechanism includes fixing base and sealed piece, and the fixing base is sealed with the passageway, and run through set up the second through-hole that supplies the gas circulation on the fixing base, and sealed piece can slide in the passageway, and sealed piece can prevent the gas to continue to pass the second passageway when the gas flow in the passageway is greater than predetermined maximum value.
However, the gas pipeline self-closing valve has the following disadvantages: no matter what kind of environment is used, when using at every turn, the gas flow that gets into in the valve body is fixed unchangeable all the time under the unchangeable condition of inlet pressure, therefore the suitability is not enough, can't satisfy all kinds of user's actual demand.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an overflowing closing valve for a gas self-closing valve, aiming at solving the problem of insufficient applicability caused by the fact that the flow of inlet gas cannot be adjusted.
The purpose of the utility model can be realized by the following technical scheme:
the overflow closed valve for the gas self-closing valve comprises a cylindrical body with an inner cavity, wherein one end of the body is provided with an air inlet hole, the other end of the body is provided with an air outlet hole, a sealing assembly capable of separating the air inlet hole and the air outlet hole when the air inlet pressure exceeds a set value is connected in the body in a sliding mode, and the overflow closed valve is characterized in that one end portion, provided with the air outlet hole, of the body is detachably connected with a connecting cover, the connecting cover covers the air outlet hole, and an air passing hole communicated with the air outlet hole is formed in the connecting cover in a penetrating mode.
When the gas self-closing valve is used, the overflowing closing valve is arranged in the gas inlet end of the valve body of the gas self-closing valve, and when the pressure in a gas pipeline is smaller than a set value, the sealing assembly does not work, so that gas can smoothly enter from the gas inlet hole and sequentially enter the inner cavity of the valve body of the gas self-closing valve through the gas outlet hole and the gas passing hole; when the pressure in the gas pipeline is larger than a set value, the sealing assembly works to cut off a passage between the gas inlet hole and the gas outlet hole, so that the gas cannot enter the inner cavity of the valve body of the gas self-closing valve. This overflow closed valve is through can dismantling the connection lid outside a tip that is equipped with the venthole at the body for the staff can be under the unchangeable circumstances of inlet pressure possess not equidimension cross the connection lid of gas pocket and realize the regulation of flow (just change the less connection lid in gas pocket aperture if need the low discharge, just change the great connection lid in gas pocket aperture if need the high discharge can), improved suitability and convenient operation. In addition, the connecting cover has the advantages of simple structure, convenient production and low production cost.
In the overflow closing valve for the gas self-closing valve, an air outlet gap is formed between the connecting cover and the body, and the air outlet hole is communicated with the air passing hole through the air outlet gap.
Connect and form the clearance of giving vent to anger between lid and the body, connect the lid like this and can avoid giving the venthole to block up when covering the venthole again, can also guarantee the stability of gas circulation simultaneously.
In the overflowing closing valve for the gas self-closing valve, a convex ring is arranged on one end face, provided with the air outlet hole, of the body, the air outlet hole is located on the inner side of the convex ring, a positioning step is formed between the outer peripheral wall of the convex ring and the end face of the body where the convex ring is located, and the connecting cover is sleeved outside the convex ring and abuts against the positioning step.
The end face of the body, which is provided with the air outlet hole, is provided with the convex ring, and the positioning step is formed between the convex ring and the end face of the body, so that the connecting cover can be detachably connected with the body in a mode of being sleeved outside the convex ring and abutting against the positioning step, and the flow of inlet air can be changed by replacing the connecting cover.
In the overflow closing valve for the gas self-closing valve, the outer peripheral wall of the connecting cover is flush with the outer peripheral wall of one end of the body connected with the connecting cover.
Through the arrangement, the normal installation of the body in the air inlet end of the valve body of the gas self-closing valve can be prevented from being influenced by the connection of the connecting cover on the body.
In the overflow closing valve for the gas self-closing valve, the connecting cover and the body are both made of plastics, and the outer diameter of the convex ring is slightly larger than the inner diameter of the connecting cover.
Connect lid and body all adopt plastics to make and have elasticity, because the bulge loop external diameter slightly is greater than and connects the lid internal diameter, can form comparatively inseparable cooperation between the two when connecting the lid cover outside the bulge loop, can not drop when both having ensured to use, guarantee simultaneously again that the staff can dismantle and change the regulation in order to realize the flow to connecting the lid through applying the effort.
In the above-mentioned excess flow closing valve for gas self-closing valve, as another technical scheme, the end face of the body provided with the air outlet hole is provided with a convex ring, the air outlet hole is positioned at the inner side of the convex ring, a positioning step is formed between the inner peripheral wall of the convex ring and the end face of the body where the convex ring is positioned, and the connecting cover is positioned at the inner side of the convex ring and abuts against the positioning step.
In the overflowing closing valve for the gas self-closing valve, the outer peripheral wall of the connecting cover is provided with an annular lug which abuts against the end face of the convex ring.
In the overflow closing valve for the gas self-closing valve, the connecting cover and the body are both made of plastics, and the outer diameter of the connecting cover is slightly larger than the inner diameter of the convex ring.
Compared with the prior art, the overflowing closing valve for the gas self-closing valve has the advantages that the connecting cover can be detachably connected to one end part of the body, which is provided with the air outlet hole, and the flow can be adjusted by replacing the connecting cover with the air outlet holes in different sizes under the condition that the air inlet pressure is unchanged, so that the applicability and the operation are improved. Moreover, the way of replacing only the connecting cover is also relatively low in terms of production costs.
Drawings
FIG. 1 is a schematic view of a first embodiment of the excess flow closing valve for the gas self-closing valve.
Fig. 2 is an exploded view of a first embodiment of the excess flow closing valve for the gas self-closing valve.
FIG. 3 is another exploded perspective view of the first embodiment of the excess flow shutoff valve for the gas self-closing valve.
FIG. 4 is a sectional view of the first embodiment of the excess flow shutoff valve for the gas self-closing valve.
In the figure, 1, a body; 1a, a first connecting body; 1a1, intake; 1a2, jack; 1b, a second connecting body; 1b1, air outlet; 1b2, convex column; 1b3, mounting holes; 1b4, annular boss; 1b5, convex ring; 1b6, positioning step; 2. a seal assembly; 2a, sealing sheets; 2a1, pin one; 2a2, pin two; 2b, a spring; 3. a connecting cover; 3a, air passing holes; 4. and an air outlet gap.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1-4, the excess flow closing valve for gas self-closing valve comprises a cylindrical body 1 with an inner cavity, wherein an air inlet hole 1a1 is arranged at one end of the body 1, an air outlet hole 1b1 is arranged at the other end of the body 1, and a sealing assembly 2 capable of isolating the air inlet hole 1a1 and the air outlet hole 1b1 when the air inlet pressure exceeds a set value is arranged in the body 1 in a sliding manner. Particularly, body 1 includes connector 1a and connector two 1b, and connector 1a and connector two 1b all are one end opening and other end confined tubular structure, and in connector two 1b open-ended one end inserted connector 1a, inlet port 1a1 quantity is a plurality of and runs through and set up in connector one 1a confined one end, and venthole 1b1 quantity is a plurality of and runs through and set up connector two 1b confined one end, and connector one 1a confined one end periphery wall is equipped with the screw thread. The closed end of the first connecting body 1a is further provided with an insertion hole 1a2, each air inlet hole 1a1 is distributed around the insertion hole 1a2, the closed end of the second connecting body 1b is provided with a convex column 1b2, each air outlet hole 1b1 is distributed around the convex column 1b2, the convex column 1b2 is provided with a mounting hole 1b3, the sealing assembly 2 comprises a sealing piece 2a and a spring 2b, one side of the sealing piece 2a is provided with a pin one 2a1 inserted into the insertion hole 1a2, the other side of the sealing piece 2a is provided with a pin two 2a2 inserted into the mounting hole 1b3, the spring 2b is sleeved outside the convex column 1b2, and two ends of the spring 2b respectively act on the sealing piece 2a and the second connecting body 1 b. The closed end of the second connector 1b is also internally provided with an annular convex part 1b4, each air outlet 1b1 is positioned at the inner side of the annular convex part 1b4, the end surface of the annular convex part 1b4 is flush with the end surface of the convex column 1b2, and the sealing piece 2a is a circular piece and the outer diameter of the sealing piece is larger than the inner diameter of the annular convex part 1b 4. In this embodiment, the first connecting body 1a and the second connecting body are both made of plastic, and the inner diameter of the first connecting body 1a is slightly smaller than the outer diameter of the second connecting body 1b, so that the first connecting body 1a and the second connecting body 1b can form a relatively tight fit.
When the overflow closing valve is used, the body 1 of the overflow closing valve is in threaded connection with the air inlet end of the valve body of the gas self-closing valve. Under the normal state, the sealing sheet 2a is separated from the annular convex part 1b4 under the elastic force of the spring 2b, so that the fuel gas in the pipeline can enter the valve body inner cavity of the fuel gas self-closing valve through the air inlet hole 1a1 and the air outlet hole 1b1 in sequence after entering the valve body air inlet end of the fuel gas self-closing valve. When the air inlet pressure exceeds a set value (namely the set elastic force of the spring 2 b), the sealing sheet 2a overcomes the elastic force of the spring 2b under the action of the air inlet pressure and is pressed on the end surface of the annular convex part 1b4, so that the gas hole cannot pass through the air outlet hole 1b1 after entering the body 1 from the air inlet hole 1a1, and overpressure protection is realized.
Further, as shown in fig. 1-4, a connecting cover 3 is detachably connected to an end portion (i.e., a closed end portion of the connecting body two 1 b) of the main body 1 having the air outlet 1b1, the connecting cover 3 covers the air outlet 1b1, an air passing hole 3a communicated with the air outlet 1b1 is penetratingly disposed on the connecting cover 3, and the air passing hole 3a is located at a central position of the connecting cover 3. An air outlet gap 4 is formed between the connecting cover 3 and the body 1, and the air outlet hole 1b1 is communicated with the air passing hole 3a through the air outlet gap 4. One end face of the body 1 provided with the air outlet 1b1 is provided with a convex ring 1b5, and the air outlet 1b1 is positioned at the inner side of the convex ring 1b 5. A positioning step 1b6 is formed between the outer peripheral wall of the convex ring 1b5 and the end face of the body 1 where the convex ring 1b5 is located, and the connecting cover 3 is sleeved outside the convex ring 1b5 and abuts against the positioning step 1b 6. The outer peripheral wall of the connecting cover 3 is flush with the outer peripheral wall of one end of the body 1 connected with the connecting cover 3. The connecting cover 3 is made of plastic, and the outer diameter of the convex ring 1b5 is slightly larger than the inner diameter of the connecting cover 3. Through connecting lid 3 in the connection of dismantling for the staff can be under the unchangeable circumstances of inlet pressure possesses not equidimension connection lid 3 that crosses gas pocket 3a through the change and realizes the regulation of flow (just change the less connection lid 3 in gas pocket 3a aperture if need the low discharge, just change the great connection lid 3 in gas pocket 3a aperture if need the high discharge can), improved suitability and convenient operation. In addition, the connecting cover 3 has a simpler structure and is more convenient to produce, and the production cost is lower when only the connecting cover 3 is replaced.
Example two
The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, one end surface of the body 1 provided with the air outlet 1b1 is provided with a convex ring 1b5, the air outlet 1b1 is located inside the convex ring 1b5, a positioning step 1b6 is formed between the inner peripheral wall of the convex ring 1b5 and the end surface of the body 1 where the convex ring 1b5 is located, and the connecting cover 3 is located inside the convex ring 1b5 and abuts against the positioning step 1b 6. The outer peripheral wall of the connecting cap 3 has an annular lug which abuts on the end face of the convex ring 1b 5. The connecting cover 3 is made of plastic, and the outer diameter of the connecting cover 3 is slightly larger than the inner diameter of the convex ring 1b 5.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (8)
1. The overflowing closing valve for the gas self-closing valve comprises a cylindrical body (1) with an inner cavity, wherein one end of the body (1) is provided with an air inlet hole (1a1) and the other end of the body (1) is provided with an air outlet hole (1b1), the body (1) is internally and slidably connected with a sealing assembly (2) which can cut off the air inlet hole (1a1) and the air outlet hole (1b1) when the air inlet pressure exceeds a set value, the overflowing closing valve is characterized in that one end part, provided with the air outlet hole (1b1), of the body (1) is detachably connected with a connecting cover (3) and the connecting cover (3) covers the air outlet hole (1b1), and the connecting cover (3) is provided with an air passing hole (3a) communicated with the air outlet hole (1b1) in a penetrating mode.
2. The excess flow closing valve for the gas self-closing valve according to claim 1, wherein a gas outlet gap (4) is formed between the connecting cover (3) and the body (1), and the gas outlet hole (1b1) is communicated with the gas passing hole (3a) through the gas outlet gap (4).
3. The excess flow closing valve for the gas self-closing valve according to claim 2, wherein a convex ring (1b5) is arranged on one end face of the body (1) provided with the air outlet (1b1), the air outlet (1b1) is positioned on the inner side of the convex ring (1b5), a positioning step (1b6) is formed between the outer peripheral wall of the convex ring (1b5) and the end face of the body (1) on which the convex ring (1b5) is positioned, and the connecting cover (3) is sleeved outside the convex ring (1b5) and abuts against the positioning step (1b 6).
4. The excess flow closing valve for gas self-closing valves according to claim 3, characterized in that the peripheral wall of the connecting cover (3) is flush with the peripheral wall of one end of the body (1) to which the connecting cover (3) is connected.
5. The excess flow closing valve for gas self-closing valve according to claim 3 or 4, wherein the connecting cover (3) and the body (1) are made of plastic, and the outer diameter of the convex ring (1b5) is slightly larger than the inner diameter of the connecting cover (3).
6. The excess flow closing valve for the gas self-closing valve according to claim 2, wherein a convex ring (1b5) is arranged on one end face of the body (1) provided with the air outlet (1b1), the air outlet (1b1) is positioned on the inner side of the convex ring (1b5), a positioning step (1b6) is formed between the inner peripheral wall of the convex ring (1b5) and the end face of the body (1) on which the convex ring (1b5) is positioned, and the connecting cover (3) is positioned on the inner side of the convex ring (1b5) and abuts against the positioning step (1b 6).
7. Excess flow closing valve for gas self-closing valves according to claim 6, characterised in that the peripheral wall of the connecting cover (3) has an annular lug which abuts against the end face of the male ring (1b 5).
8. The excess flow closing valve for the gas self-closing valve according to claim 6 or 7, wherein the connecting cover (3) and the body (1) are both made of plastics, and the outer diameter of the connecting cover (3) is slightly larger than the inner diameter of the convex ring (1b 5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121904841.7U CN215568241U (en) | 2021-08-13 | 2021-08-13 | Overflow closing valve for gas self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121904841.7U CN215568241U (en) | 2021-08-13 | 2021-08-13 | Overflow closing valve for gas self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215568241U true CN215568241U (en) | 2022-01-18 |
Family
ID=79835676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121904841.7U Active CN215568241U (en) | 2021-08-13 | 2021-08-13 | Overflow closing valve for gas self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215568241U (en) |
-
2021
- 2021-08-13 CN CN202121904841.7U patent/CN215568241U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220260164A1 (en) | Check valve | |
| CN107448624B (en) | Improved pipeline gas self-closing valve | |
| US20160305562A1 (en) | Non-return valve mechanism and one-way valve device | |
| CN215568241U (en) | Overflow closing valve for gas self-closing valve | |
| CN112503045B (en) | Hydraulic valve assembly | |
| CN205715869U (en) | A kind of pressure maintaining valve | |
| US7389791B2 (en) | Backflow preventer | |
| CN210566499U (en) | Fluid pressure stabilizing valve | |
| CN209818781U (en) | Take non return function's integral type ball valve | |
| CA2935844A1 (en) | Membrane style excess flow valve | |
| JP3373338B2 (en) | Ball valve with check valve | |
| CN107806524B (en) | Axial-flow type water control pressure reducing valve | |
| CN212107057U (en) | Valve module and valve device | |
| CN216158290U (en) | Valve assembly and control valve device with same | |
| CN214063878U (en) | High-pressure angle check valve | |
| CN210566457U (en) | One-way valve | |
| CN219954266U (en) | Valve assembly and electronic expansion valve | |
| CN216519884U (en) | Vacuum regulator | |
| CN217583306U (en) | Built-in gas self-discharging pressure relief valve for discharging pipeline system | |
| CN214889128U (en) | Pressure reducing valve | |
| CN220060650U (en) | One-way valve | |
| CN216143346U (en) | Valve core and valve quick joint | |
| CN215980991U (en) | Check valve with good fluid impact resistance | |
| CN220397271U (en) | Gas valve for clip-type furnace | |
| CN218294651U (en) | Normally closed proportional electromagnetic valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 215, Lubei Avenue, Yuhuan, Taizhou, Zhejiang 317600 Patentee after: ZHEJIANG XINQI PIPE INDUSTRY Co.,Ltd. Address before: Puqing Industrial Zone, Damaiyu street, Yuhuan City, Taizhou City, Zhejiang Province 317604 Patentee before: ZHEJIANG XINQI PIPE INDUSTRY Co.,Ltd. |