CN220850815U - Gas leakage preventing gas valve - Google Patents

Abstract

The utility model discloses a gas leakage-proof gas valve which comprises a valve body, a valve core, a valve rod, a connecting piece and an elastic assembly. The connecting piece is movably arranged in the valve cavity, the connecting piece can rotate along with the valve rod, the connecting piece can be mutually spliced with the valve core or is movably connected with the valve core, the connecting piece can drive the valve core to rotate, and the connecting piece can move up and down relative to the valve core; the elastic component comprises a first spring arranged between the valve rod and the connecting piece and/or a second spring arranged between the valve rod and the valve core; the valve rod can move downwards relative to the connecting piece and drives the valve core to rotate through the connecting piece to open or close the air inlet channel. Therefore, when the valve rod is outwards popped, the connecting piece can be driven to move upwards relative to the valve core, but the valve core is not easy to be driven to move upwards, so that the risk of gas leakage and other phenomena caused by the upward movement of the valve core relative to the valve body can be reduced, and the use safety of the gas valve is improved.

Description

Gas leakage preventing gas valve

Technical Field

The utility model relates to the technical field of gas valves, in particular to a gas valve capable of preventing gas leakage.

Background

The existing gas valve generally comprises a valve body, a valve core and a valve rod, wherein the valve body is provided with a valve cavity and an air inlet channel communicated with the valve cavity, the valve core is movably arranged in the valve cavity, and the valve rod can be downwards moved to be spliced with the valve core and drive the valve core to rotate to open or close the air inlet channel. And a compression spring is connected between the valve rod and the valve core, when the air inlet channel needs to be opened or closed, the valve rod is pressed down to enable the compression spring to shrink, then the valve rod is rotated to drive the valve core to rotate to open or close the air inlet channel, then the valve rod is loosened, and the valve rod can move upwards to be far away from the valve core under the elastic action of the compression spring.

However, because the valve rod and the valve core are mutually inserted, in the process of upward ejection of the valve rod, the valve rod can drive the valve core to move upward relative to the valve body, so that the air leakage phenomenon occurs, and potential safety hazards exist.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the gas valve capable of preventing gas leakage, and the risk of gas leakage when the valve rod is ejected can be reduced.

According to an embodiment of the utility model, a gas valve for preventing gas leakage includes: the valve body is provided with a valve cavity, and an air inlet channel and an air outlet channel which are communicated with the valve cavity; the valve core is rotatably arranged in the valve cavity and can rotate relative to the valve body to open or close the air inlet channel; the valve rod is movably arranged in the valve cavity and extends to the outside of the valve body; the connecting piece is movably arranged in the valve cavity and is positioned between the valve core and the valve rod, the connecting piece can rotate along with the valve rod, the connecting piece can be mutually inserted with the valve core or is movably connected with the valve core, the connecting piece can drive the valve core to rotate, and the connecting piece can move up and down relative to the valve core; the elastic assembly comprises a first spring arranged between the valve rod and the connecting piece and/or a second spring arranged between the valve rod and the valve core; the valve rod can move downwards relative to the connecting piece and drives the valve core to rotate to open or close the air inlet channel through the connecting piece.

The gas valve for preventing gas leakage has the following beneficial effects:

In the structure, through movably arranging the connecting piece between the valve core and the valve rod, a first spring is arranged between the connecting piece and the valve rod, when an air inlet channel needs to be opened or closed, the valve rod can be pressed down to compress the elastic component, then the valve rod is rotated, the valve rod can drive the valve core to rotate to open or close the air inlet channel through the connecting piece, finally the valve rod is released, the valve rod can be ejected upwards under the elastic action of the elastic component, in the process, the valve rod is not directly connected with the valve core, but the valve core is driven to rotate through the connecting piece, and therefore, the connecting piece can be driven to move upwards relative to the valve core when the valve rod is ejected outwards, but the valve core is not easy to be driven to move upwards, so that the risk of gas leakage and other phenomena caused by the upward movement of the valve core relative to the valve body can be reduced, and the use safety of the gas valve is improved.

According to some embodiments of the utility model, the elastic component comprises the first spring and the second spring, the first spring is sleeved on the periphery of the valve rod and the connecting piece, one end of the first spring is abutted against the valve rod, and the other end of the first spring is abutted against the connecting piece; the second spring penetrates through the connecting piece, one end of the second spring is abutted to the valve rod, and the other end of the second spring is abutted to the valve core.

According to some embodiments of the utility model, the connecting piece has a first limit part on the outer periphery, a second limit part on the outer periphery of the valve rod, the upper end of the first spring is abutted against the second limit part, and the lower end of the first spring is abutted against the first limit part; the second limiting part is provided with a second protruding part protruding upwards, the upper surface of the second protruding part is abutted to the top wall of the valve cavity, the top wall of the valve cavity is provided with a first protruding part protruding downwards, and the first protruding part can be abutted to the side surface of the second protruding part to prevent the valve rod from rotating.

According to some embodiments of the utility model, the air inlet passage has a first communication port extending to a side wall of the valve cavity, a second communication port communicating with the valve cavity is provided on the side wall of the valve core, and the valve core can rotate relative to the valve body so that the first communication port and the second communication port are mutually communicated or staggered.

According to some embodiments of the utility model, the air outlet channel is located below the valve cavity, the valve core is provided with a communication channel, the second communication port is communicated with the valve cavity through the communication channel, the valve core is provided with a blocking piece capable of blocking the communication channel, the blocking piece is located at the upper end of the communication channel, and the lower end of the second spring is abutted against the blocking piece.

According to some embodiments of the utility model, a first connecting structure is arranged between the connecting piece and the valve rod, the first connecting structure comprises a first connecting part and a second connecting part, one of the first connecting part and the second connecting part is arranged on the connecting piece, and the other is arranged on the valve rod; the first clamping groove is formed in one end, close to the second connecting portion, of the first connecting portion, the first clamping groove is formed in one end, close to the second connecting portion, of the second connecting portion, the second connecting portion can move in and out of the first clamping groove along the upper and lower directions, when the second connecting portion is inserted into the first clamping groove, and the valve rod can drive the valve core to rotate synchronously.

According to some embodiments of the utility model, when the second connecting portion is inserted into the first clamping groove, the second connecting portion is in clearance fit with the first clamping groove.

According to some embodiments of the utility model, a second connecting structure is arranged between the connecting piece and the valve core, the second connecting structure comprises a third connecting part and a fourth connecting part, one of the third connecting part and the fourth connecting part is arranged on the connecting piece, and the other is arranged on the valve core; the third connecting portion is close to one end of the fourth connecting portion and is provided with a second clamping groove which is arranged along the up-down direction, the fourth connecting portion is inserted into the second clamping groove and can move along the second clamping groove relative to the third connecting portion, and the connecting piece can also drive the valve core to synchronously rotate.

According to some embodiments of the utility model, the fourth connecting portion is in clearance fit with the second clamping groove.

According to some embodiments of the utility model, an abutting position located at the periphery of the valve core is provided on the inner peripheral wall of the valve cavity, the lower end of the connecting piece abuts against the abutting position, and the fourth connecting portion is movably inserted into the second clamping groove.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic illustration of a gas valve for preventing gas leakage according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of the gas valve of FIG. 1;

FIG. 3 is another cross-sectional schematic view of the gas valve of FIG. 1;

Fig. 4 is a partially exploded view of a gas valve for preventing gas leakage according to an embodiment of the present utility model.

Reference numerals:

Valve body 100, valve cavity 110, air inlet channel 120, first communication port 121, air outlet channel 130, and abutting position 140;

The valve core 200, the communication channel 210, the second communication port 220, the blocking member 230, the fourth connection portion 240;

The valve rod 300, the second connecting part 310, the second limiting part 320 and the second protruding part 321;

The connecting piece 400, the first spring 410, the second spring 420, the first connecting portion 430, the first clamping groove 431, the third connecting portion 440, the second clamping groove 441 and the first limiting portion 450.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 4, an embodiment of the present utility model provides a gas valve for leakage prevention, which includes a valve body 100, a valve cartridge 200, a valve stem 300, an elastic assembly, and a connector 400. The valve body 100 has a valve chamber 110, an inlet passage 120 and an outlet passage 130 communicating with the valve chamber 110. The valve core 200 is rotatably installed in the valve chamber 110 and is capable of rotatably opening or closing the intake passage 120 with respect to the valve body 100. The valve stem 300 is movably mounted to the valve chamber 110 and extends to the outside of the valve body 100. The connecting piece 400 is movably arranged in the valve cavity 110 and is positioned between the valve core 200 and the valve rod 300, the connecting piece 400 can rotate along with the valve rod 300, the connecting piece 400 can be mutually inserted with the valve core 200 or the connecting piece 400 is movably connected with the valve core 200, the connecting piece 400 can drive the valve core 200 to rotate, and the connecting piece 400 can move up and down relative to the valve core 200. The elastic assembly includes a first spring 410 provided between the valve stem 300 and the connector 400 and a second spring 420 provided between the valve stem 300 and the valve cartridge 200. The valve rod 300 can move downwards relative to the connecting piece 400 and drive the valve core 200 to rotate through the connecting piece 400 to open or close the air inlet channel 120.

In the above structure, by movably arranging the connecting member 400 between the valve core 200 and the valve rod 300, and arranging the first spring 410 between the connecting member 400 and the valve rod 300, when the air inlet channel 120 needs to be opened or closed, the valve rod 300 can be pressed down to compress the elastic component, then the valve rod 300 is rotated, the valve rod 300 can drive the valve core 200 to rotate to open or close the air inlet channel 120 through the connecting member 400, finally the valve rod 300 is released, the valve rod 300 can be ejected upwards under the elastic action of the elastic component, in the process, because the valve rod 300 is not directly connected with the valve core 200, but the valve core 200 is driven to rotate through the connecting member 400, the connecting member 400 can be driven to move upwards relative to the valve core 200 when the valve rod 300 is ejected outwards, but the valve core 200 is not easily driven to move upwards, thus the risk of gas leakage and other phenomena caused by the upward movement of the valve core 200 relative to the valve body 100 can be reduced, and the use safety of the gas valve can be improved.

It will be appreciated that the connector 400 can be inserted into the valve core 200 or the connector 400 is movably connected with the valve core 200, specifically, in some embodiments, the connector 400 can be inserted into the valve core 200, that is, the connector 400 is movably mounted in the valve cavity 110 and can move up and down relative to the valve body 100, the valve rod 300 can move down and push the connector 400 to move down to be inserted into the valve core 200, and at this time, the valve rod 300 can drive the valve core 200 to rotate to open or close the air inlet channel 120 through the connector 400. Or in other embodiments, the connecting piece 400 is movably connected with the valve core 200, that is, the connecting piece 400 is movably installed in the valve cavity 110 and is directly movably connected with the valve core 200, the valve rod 300 can move downwards to be connected with the connecting piece 400, and at this time, the valve rod 300 can drive the valve core 200 to rotate to open or close the air inlet channel 120 through the connecting piece 400. In the above two embodiments, after the valve rod 300 is released, the valve rod 300 can be ejected upwards under the elastic action of the elastic component, and in this process, since the valve rod 300 is not directly connected with the valve core 200, the valve rod 300 will drive the connecting piece 400 to move upwards relative to the valve core 200 when ejected upwards, but the valve core 200 will not be easily driven to move upwards, so that the risk of gas leakage and other phenomena caused by the upward movement of the valve core 200 relative to the valve body 100 can be reduced, and the use safety of the gas valve is improved.

It will be appreciated that the resilient assembly described above includes a first spring 410 disposed between the valve stem 300 and the connector 400 and a second spring 420 disposed between the valve stem 300 and the valve cartridge 200, just for one exemplary illustration of fig. 1-4. In order to achieve the resetting of the valve stem 300, the elastic assembly may include, in addition to the first spring 410 and the second spring 420, only the first spring 410 disposed between the valve stem 300 and the connector 400, or only the second spring 420 disposed between the valve stem 300 and the valve core 200, which is not particularly limited in the present utility model.

Referring to fig. 1 to 4, in some embodiments, the elastic assembly includes a first spring 410 and a second spring 420, the first spring 410 is sleeved on the outer circumference of the valve rod 300 and the connecting piece 400, and one end of the first spring 410 abuts against the valve rod 300, and the other end abuts against the connecting piece 400. The second spring 420 is disposed inside the connector 400, and one end of the second spring 420 abuts against the valve rod 300, and the other end abuts against the valve core 200.

In the above structure, the arrangement of the first spring 410 and the second spring 420 can make the structure of the gas valve more compact and the operation more stable. And when the valve rod 300 is sprung up, the second spring 420 can push the valve core 200 downward, so that the valve core 200 is prevented from moving upward along with the valve rod 300.

Referring to fig. 1 to 4, in some embodiments, the connector 400 has a first limiting portion 450 at the outer periphery, the valve rod 300 has a second limiting portion 320 at the outer periphery, the upper end of the first spring 410 abuts against the second limiting portion 320, the lower end of the first spring 410 abuts against the first limiting portion 450, the second limiting portion 320 is provided with a second protruding portion 321 protruding upward, the upper surface of the second protruding portion 321 abuts against the top wall of the valve cavity 110, the top wall of the valve cavity 110 is provided with a first protruding portion protruding downward, and the first protruding portion can abut against the side surface of the second protruding portion 321 to prevent the valve rod 300 from rotating.

In the above structure, the arrangement of the first limiting portion 450 and the second limiting portion 320 can facilitate the installation and fixation of the first spring 410, and the arrangement of the first protruding portion and the second protruding portion 321 can limit the rotation of the valve rod 300, that is, when the side surface of the second protruding portion 321 is abutted against the first protruding portion, the first protruding portion can prevent the rotation of the second protruding portion 321, and only when the valve rod 300 is pressed down to the position where the second protruding portion 321 is located below the first protruding portion, the valve rod 300 can be rotated to drive the valve core 200 to rotate through the connecting piece 400 to open or close the air inlet channel 120. In addition, the second protrusion 321 can limit the up-and-down movement of the valve rod 300, and when the second protrusion 321 abuts against the top wall of the valve cavity 110, the valve rod 300 cannot move upwards any more, so that the valve rod 300 can be prevented from moving upwards to be disconnected from the valve body 100.

Referring to fig. 1 to 3, in some embodiments, the intake passage 120 has a first communication port 121 extending to a sidewall of the valve chamber 110, a second communication port 220 communicating with the valve chamber 110 is opened to a sidewall of the valve cartridge 200, and the valve cartridge 200 can be rotated relative to the valve body 100 such that the first communication port 121 and the second communication port 220 communicate with each other or are staggered.

In the above structure, when the valve cartridge 200 rotates relative to the valve body 100 until the first communication port 121 and the second communication port 220 are communicated with each other, the intake passage 120 is opened, and when the valve cartridge 200 rotates relative to the valve body 100 until the first communication port 121 and the second communication port 220 are staggered from each other, the intake passage 120 is closed, and the structure is simple and convenient to operate.

Referring to fig. 1 to 3, in some embodiments, the air outlet passage 130 is located below the valve chamber 110, the valve cartridge 200 has a communication passage 210, the second communication port 220 communicates with the valve chamber 110 through the communication passage 210, the valve cartridge 200 is mounted with a blocking member 230 capable of blocking the communication passage 210, the blocking member 230 is located at an upper end of the communication passage 210, and a lower end of the second spring 420 abuts against the blocking member 230.

In the above structure, the provision of the blocking piece 230 can facilitate the installation of the second spring 420, and can facilitate the production process of the spool 200. Through setting up shutoff piece 230, directly set up on case 200 with the intercommunication passageway 210 that runs through when processing case 200 can, then install shutoff piece 230 in the upper end of intercommunication passageway 210 in order to carry out the shutoff to intercommunication passageway 210, simple structure, simple to operate.

Referring to fig. 1 to 4, in some embodiments, a first connection structure is disposed between the connector 400 and the valve rod 300, the first connection structure includes a first connection portion 430 disposed on the connector 400 and a second connection portion 310 disposed on the valve rod 300, a first clamping groove 431 disposed along a vertical direction is formed at an end of the first connection portion 430 adjacent to the second connection portion 310, the second connection portion 310 can move in and out of the first clamping groove 431 along the vertical direction relative to the first connection portion 430, and when the second connection portion 310 is inserted into the first clamping groove 431, the valve rod 300 can drive the valve core 200 to rotate synchronously.

In the above structure, by opening the first locking groove 431 at the first connecting portion 430, when in use, the valve rod 300 is pressed down, so that the second connecting portion 310 of the valve rod 300 is inserted into the first locking groove 431, at this time, the valve rod 300 can drive the connecting piece 400 to rotate synchronously, and further drive the valve core 200 to rotate relative to the valve body 100 to open or close the air inlet channel 120. When the valve rod 300 is released, the valve rod 300 can move upwards along the first clamping groove 431 under the elastic action of the elastic component and finally separate from the first clamping groove 431.

It can be understood that referring to fig. 1 to 4, the first connecting portion 430 of the connecting member 400 is provided with two first clamping grooves 431 disposed opposite to each other, and the second connecting portion 310 of the valve rod 300 can be inserted into the two first clamping grooves 431.

It can be appreciated that, referring to fig. 1 to 4, in the above-described structure, the first connection part 430 is provided to the connection member 400, and specifically, the first connection part 430 may be provided as a one-piece structure with the connection member 400, or the first connection part 430 may be fixedly connected with the connection member 400. Similarly, the second connection portion 310 may be provided on the valve stem 300, specifically, the second connection portion 310 may be provided as an integral structure with the valve stem 300, or the second connection portion 310 may be fixedly connected to the valve stem 300.

It should be understood that, in the above-mentioned structure, the first connecting portion 430 is disposed on the connecting member 400, the second connecting portion 310 is disposed on the valve stem 300, and only one example is illustrated in fig. 1 to 4, and in other embodiments, the first connecting portion 430 may be disposed on the valve stem 300, and the second connecting portion 310 may be disposed on the connecting member 400, which is not particularly limited, only one of the first connecting portion 430 and the second connecting portion 310 may be disposed on the connecting member 400, and the other may be disposed on the valve stem 300.

It can be understood that, in order to realize that the connector 400 can move along the up-down direction relative to the valve rod 300, and the connector 400 can rotate synchronously along with the valve rod 300, besides the first slot 431 that can be mutually inserted with the second connecting portion 310 can be formed at one end of the first connecting portion 430 near the second connecting portion 310, a non-circular slot can be formed at one end of the first connecting portion 430 near the second connecting portion 310, and the cross-sectional shape of the second connecting portion 310 is set to be non-circular that matches the cross-sectional shape of the slot.

Referring to fig. 1 to 4, in some embodiments, when the second connecting portion 310 is inserted into the first slot 431, the second connecting portion 310 is in clearance fit with the first slot 431.

In the above structure, the second connecting portion 310 is in clearance fit with the first clamping groove 431, that is, a space is formed between the side wall of the first clamping groove 431 and the side wall of the second connecting portion 310, so that when the valve rod 300 is ejected upwards, the second connecting portion 310 can be easily separated from the connection with the first clamping groove 431, and thus the valve rod 300 can be further prevented from moving the connecting piece 400 upwards, and further the difficulty of the connecting piece 400 to drive the valve core 200 to move upwards can be further increased, and therefore the risk of gas leakage and other phenomena caused by the upward movement of the valve core 200 relative to the valve body 100 can be further reduced, and the use safety of the gas valve is improved.

Referring to fig. 1 to 4, in some embodiments, a second connection structure is disposed between the connector 400 and the valve core 200, the second connection structure includes a third connection portion 440 disposed on the connector 400 and a second connection portion 310 disposed on the valve core 200, a second clamping groove 441 disposed along an up-down direction is formed at an end of the third connection portion 440 adjacent to the fourth connection portion 240, and the fourth connection portion 240 is inserted into the second clamping groove 441 and can move along the second clamping groove 441 relative to the third connection portion 440, so that the connector 400 can also drive the valve core 200 to rotate synchronously.

In the above structure, the second clamping groove 441 is formed in the third connecting portion 440, so that the fourth connecting portion 240 is movably inserted into the second clamping groove 441, when the valve rod 300 moves downward to be connected with the connecting piece 400, the valve rod 300 can drive the valve core 200 to rotate relative to the valve body 100 through the connecting piece 400 to open or close the air inlet channel 120, when the valve rod 300 is sprung up under the elastic action of the elastic component, the third connecting portion 440 can move upward relative to the fourth connecting portion 240, that is, the valve rod 300 can drive the connecting portion to move upward, but is not easy to drive the valve core 200 to move upward, thereby reducing the risk of gas leakage and other phenomena caused by the upward movement of the valve core 200 relative to the valve body 100, and improving the use safety of the gas valve.

As can be appreciated, referring to fig. 1 to 4, two sets of second connection structures are provided between the connector 400 and the valve core 200, that is, the connector 400 has two third connection portions 440, each second connection portion 310 is provided with a second clamping groove 441, and the valve core 200 is provided with two fourth connection portions 240 corresponding to the second clamping grooves 441 one by one. Of course, the specific number of the second connection structures may be two groups, or may be one group, three groups or more, which is not particularly limited to the present utility model.

It will be appreciated that, referring to fig. 1 to 4, in the above-described structure, the third connection portion 440 is provided to the connection member 400, and specifically, the third connection portion 440 may be provided as a unitary structure with the connection member 400, or the third connection portion 440 may be fixedly connected with the connection member 400. Similarly, the fourth connecting portion 240 is provided on the valve element 200, specifically, the fourth connecting portion 240 may be provided as an integral structure with the valve element 200, or the fourth connecting portion 240 may be fixedly connected to the valve element 200.

It should be understood that, in the above-mentioned structure, the third connecting portion 440 is disposed on the connecting member 400, the fourth connecting portion 240 is disposed on the valve core 200, and only one exemplary illustration is provided in fig. 1 to 4, and in other embodiments, the third connecting portion 440 may be disposed on the valve core 200, and the fourth connecting portion 240 may be disposed on the connecting member 400, which is not particularly limited in this utility model, but only one of the third connecting portion 440 and the fourth connecting portion 240 may be disposed on the connecting member 400, and the other may be disposed on the valve core 200.

It can be understood that, in order to realize that the connecting piece 400 can move along the up-down direction relative to the valve core 200, and the connecting piece 400 can drive the valve core 200 to rotate synchronously, besides the second clamping groove 441 which can be movably inserted into the fourth connecting portion 240 and is arranged at one end of the third connecting portion 440 close to the fourth connecting portion 240, a non-circular slot can be arranged at one end of the third connecting portion 440 close to the fourth connecting portion 240, and the cross section of the fourth connecting portion 240 is set to be non-circular matching with the cross section of the slot.

Referring to fig. 1 to 3, in some embodiments, the fourth connection portion 240 is clearance fit with the second card slot 441.

In the above structure, the fourth connecting portion 240 is in clearance fit with the second clamping groove 441, that is, a clearance is formed between the side wall of the second clamping groove 441 and the side wall of the fourth connecting portion 240, so that when the connecting piece 400 moves upward along with the valve rod 300, the fourth connecting portion 240 can be easily separated from the connection with the second clamping groove 441, and thus the difficulty of the connecting piece 400 to drive the valve core 200 to move upward can be further increased, the risk of gas leakage and other phenomena caused by the upward movement of the valve core 200 relative to the valve body 100 can be further reduced, and the use safety of the gas valve is improved.

Referring to fig. 1 to 3, in some embodiments, an inner circumferential wall of the valve cavity 110 is provided with an abutment 140 located at an outer periphery of the valve core 200, a lower end of the connecting piece 400 abuts against the abutment 140, and the fourth connecting portion 240 is movably inserted into the second clamping groove 441.

In the above structure, the provision of the abutment 140 can facilitate the installation of the connector 400, so that the connector 400 can be more stably installed in the valve chamber 110.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. The gas valve of gas leakage prevention, characterized by includes:

A valve body (100) having a valve cavity (110), an air inlet channel (120) and an air outlet channel (130) which are communicated with the valve cavity (110);

The valve core (200) is rotatably arranged on the valve cavity (110), and the valve core (200) can rotate relative to the valve body (100) to open or close the air inlet channel (120);

A valve rod (300) movably mounted to the valve chamber (110) and extending to the outside of the valve body (100);

The connecting piece (400) is movably arranged in the valve cavity (110) and is positioned between the valve core (200) and the valve rod (300), the connecting piece (400) can rotate along with the valve rod (300), the connecting piece (400) can be mutually inserted with the valve core (200) or the connecting piece (400) is movably connected with the valve core (200), the connecting piece (400) can drive the valve core (200) to rotate, and the connecting piece (400) can move along the up-down direction relative to the valve core (200);

An elastic assembly including a first spring (410) disposed between the valve stem (300) and the connector (400), and/or a second spring (420) disposed between the valve stem (300) and the valve cartridge (200);

The valve rod (300) can move downwards relative to the connecting piece (400) and drives the valve core (200) to rotate through the connecting piece (400) so as to open or close the air inlet channel (120).

2. The gas valve of claim 1, wherein said resilient assembly comprises said first spring (410) and said second spring (420),

The first spring (410) is sleeved on the peripheries of the valve rod (300) and the connecting piece (400), one end of the first spring (410) is abutted against the valve rod (300), and the other end of the first spring is abutted against the connecting piece (400);

The second spring (420) is arranged inside the connecting piece (400) in a penetrating mode, one end of the second spring (420) is abutted to the valve rod (300), and the other end of the second spring is abutted to the valve core (200).

3. The gas valve of claim 2, wherein,

The outer periphery of the connecting piece (400) is provided with a first limiting part (450), the outer periphery of the valve rod (300) is provided with a second limiting part (320), the upper end of the first spring (410) is abutted against the second limiting part (320), and the lower end of the first spring (410) is abutted against the first limiting part (450);

The second limiting part (320) is provided with a second protruding part (321) protruding upwards, the upper surface of the second protruding part (321) is abutted to the top wall of the valve cavity (110), the top wall of the valve cavity (110) is provided with a first protruding part protruding downwards, and the first protruding part can be abutted to the side surface of the second protruding part (321) to prevent the valve rod (300) from rotating.

4. The gas valve of claim 2, wherein,

The air inlet channel (120) is provided with a first communication port (121) extending to the side wall of the valve cavity (110), the side wall of the valve core (200) is provided with a second communication port (220) communicated with the valve cavity (110), and the valve core (200) can rotate relative to the valve body (100) so that the first communication port (121) and the second communication port (220) are mutually communicated or staggered.

5. The gas valve of claim 4, wherein,

The valve core (200) is provided with a communication channel (210), the second communication port (220) is communicated with the valve cavity (110) through the communication channel (210), the valve core (200) is provided with a plugging piece (230) capable of plugging the communication channel (210), the plugging piece (230) is positioned at the upper end of the communication channel (210), and the lower end of the second spring (420) is abutted to the plugging piece (230).

6. The gas valve according to claim 1, wherein a first connection structure is provided between the connection member (400) and the valve stem (300), the first connection structure comprising a first connection portion (430) and a second connection portion (310), one of the first connection portion (430) and the second connection portion (310) being provided to the connection member (400) and the other being provided to the valve stem (300);

First draw-in groove (431) that is arranged along upper and lower direction are offered to first connecting portion (430) be close to the one end of second connecting portion (310), second connecting portion (310) can be along upper and lower direction relatively first connecting portion (430) remove business turn over first draw-in groove (431), work as second connecting portion (310) insert locate first draw-in groove (431), valve rod (300) can drive case (200) synchronous rotation.

7. The gas valve according to claim 6, wherein when the second connecting portion (310) is inserted into the first clamping groove (431), the second connecting portion (310) is in clearance fit with the first clamping groove (431).

8. The gas valve according to claim 1, wherein a second connection structure is provided between the connector (400) and the valve core (200), the second connection structure comprising a third connection portion (440) and a fourth connection portion (240), one of the third connection portion (440) and the fourth connection portion (240) being provided to the connector (400) and the other being provided to the valve core (200);

The third connecting portion (440) is close to one end of the fourth connecting portion (240) and is provided with a second clamping groove (441) which is arranged along the up-down direction, the fourth connecting portion (240) is inserted into the second clamping groove (441) and can move along the second clamping groove (441) relative to the third connecting portion (440), and the connecting piece (400) can also drive the valve core (200) to synchronously rotate.

9. The gas valve of claim 8, wherein the fourth connection portion (240) is in clearance fit with the second clamping groove (441).

10. The gas valve according to claim 8, wherein an inner peripheral wall of the valve chamber (110) is provided with an abutment (140) located at an outer periphery of the valve core (200), a lower end of the connecting piece (400) abuts against the abutment (140), and the fourth connecting portion (240) is movably inserted into the second clamping groove (441).