Gas safety valve

Abstract

The utility model discloses a fuel gas safety valve which comprises a valve body, a first gas cavity and a second gas cavity are arranged in the valve body, and the first gas cavity and the second gas cavity are both communicated with a fuel gas pipeline. A circuit board is installed in the valve body, a first sensor and a second sensor are arranged on the circuit board respectively, and the first sensor and the second sensor are located in the first air cavity and the second air cavity respectively. The communication state and the disconnection state of the first air cavity and the second air cavity can be switched through the action of the valve element movably installed in the valve body; the first sensor and the second sensor are both installed on the same circuit board and located in the two gas cavities respectively, the gas detection requirement can be met, and meanwhile the structure of the circuit board and the structure of the sensor are reduced; besides, the two sensors installed on the same circuit board can realize signal alternating current with the outside only through one wire harness, additional electrical elements such as connecting wires do not need to be arranged, and the overall size and the structural complexity are reduced.

Description

Technical Field

[0001] The utility model relates to the field of safety valves, in particular to a gas safety valve. Background Art

[0002] A gas safety valve is a valve used in household gas pipelines to protect the safety of systems and equipment.

[0003] Different sensors of existing gas valves are dispersedly arranged in various cavities of the gas valve to collect gas parameters at various locations and feedback corresponding signals. This arrangement requires that each sensor be equipped with a corresponding circuit board and connecting wires, etc., resulting in a large gas valve and a complex internal structure, which is inconvenient to install and use. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a gas safety valve, comprising:

[0005] A valve body, wherein a first air cavity and a second air cavity are provided in the valve body, and the first air cavity and the second air cavity are both connected to the gas pipeline;

[0006] a circuit board installed in the valve body, wherein a first sensor and a second sensor are integrated on the circuit board, and the first sensor and the second sensor are located in the first air cavity and the second air cavity respectively;

[0007] The valve core is movably arranged in the valve body. The movement of the valve core in the valve body can switch the connection state and the interruption state of the first air cavity and the second air cavity.

[0008] Preferably, the first air cavity and the second air cavity of the valve body are separated by a bracket, and the bracket is provided with a communication port connecting the first air cavity and the second air cavity;

[0009] The circuit board is fixedly mounted on the bracket so that the first sensor and the second sensor are located in the first air cavity and the second air cavity respectively;

[0010] The communication port can be opened or closed based on the movement of the valve element in the valve body.

[0011] Preferably, the valve core includes a DC motor, which is installed in the first air cavity or the second air cavity of the valve body, and the output end of the DC motor faces the connecting port. A partition part matching the connecting port is installed at the output end of the DC motor. Based on the output of the DC motor, the partition part can cooperate with the connecting port and close the connecting port.

[0012] Preferably, a clearance hole is further provided on the bracket, the clearance hole connects the first air cavity and the second air cavity, and the circuit board is sealed and installed on the clearance hole to form the first sensor and the second sensor in the valve body, respectively located in the first air cavity and the second air cavity.

[0013] Preferably, it further includes a first joint and a second joint, both of which are installed on the valve body, and the first air cavity and the second air cavity are connected to the gas pipeline through the first joint and the second joint respectively.

[0014] Preferably, the first joint and / or the second joint comprises an interface mounted on the valve body and a mounting sleeve movably arranged on the interface along the axial direction of the interface, the mounting sleeve is provided with an internal thread or an external thread, and the interface is further provided with a sealing gasket;

[0015] Wherein, when the installation sleeve is connected to the gas pipeline via an internal thread or an external thread, the installation sleeve and the interface are sealed via the sealing gasket.

[0016] Preferably, a power supply box is further included, and the power supply box includes:

[0017] An electricity storage element and a control element, wherein the electricity storage element, the control element, the valve core and the circuit board are electrically connected;

[0018] A power supply shell is connected to the valve body, a sealed cavity is provided in the power supply shell, and the power storage element and the control element are both installed in the sealed cavity.

[0019] Preferably, the power supply shell includes a shell body and a shell cover, the shell body and the shell cover are sealed to form the sealed cavity, a power supply rack is detachably provided in the shell body, and the power storage element is installed on the power supply rack.

[0020] Preferably, a power supply port is provided on the power supply housing, and the power supply port can be connected to an external power source to supply power to the power supply box through the external power source.

[0021] Preferably, a first port is provided on the power supply housing, and a second port is provided on the valve body, and the power supply housing and the valve body are electrically connected through the first port and the second port.

[0022] Using the technical solution of the present utility model, a gas safety valve includes a valve body, which is provided with a first air cavity and a second air cavity. The first and second air cavities can be isolated or connected by the movement of a valve core in the valve body, thereby controlling the on / off state of the gas pipeline in which the gas valve is installed. Furthermore, the first sensor and the second sensor are integrated on a circuit board mounted in the valve body, with the first sensor and the second sensor located in the first and second air cavities, respectively. This reduces the size of the circuit board and the sensors. Furthermore, the two sensors mounted on the same circuit board require only a single wiring harness to communicate signals with the outside world, eliminating the need for additional connecting wires or connectors, thus reducing the overall size and structural complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a disassembled valve body of a gas safety valve provided by an embodiment of the utility model;

[0024] Figure 2 This is a schematic structural diagram of the valve body assembly of the gas safety valve provided by an embodiment of the present utility model;

[0025] Figure 3 This is a structural diagram of the valve core and bracket of the gas safety valve provided by an embodiment of the utility model;

[0026] Figure 4 This is a structural schematic diagram of the valve core and bracket of the gas safety valve provided by an embodiment of the utility model from another perspective;

[0027] Figure 5 This is a schematic diagram of the structure of the disassembled power supply box in the gas safety valve provided by the embodiment of the utility model;

[0028] Figure 6 This is a structural diagram of the assembly of the power supply box in the gas safety valve provided by an embodiment of the utility model;

[0029] Figure 7 This is a structural diagram of the installation of the power storage element and the control element of the power supply box in the gas safety valve provided by the embodiment of the utility model on the power supply rack;

[0030] Figure 8 This is a schematic diagram of the structure of the installation of the power supply frame and the housing of the power supply box in the gas safety valve provided by the embodiment of the utility model;

[0031] Figure 9 This is a structural diagram of the sealed installation of the shell cover and shell body of the power supply box in the gas safety valve provided by an embodiment of the utility model;

[0032] Figure 10This is a structural diagram of the installation of the valve body and the power supply box in the gas safety valve provided by the embodiment of the utility model;

[0033] Figure 11 This is another structural diagram of the installation of the valve body and the power supply box in the gas safety valve provided by the embodiment of the utility model;

[0034] in,

[0035] 1. Valve body; 11. Valve seat; 12. Valve cover; 2. Circuit board; 21. First sensor; 22. Second sensor; 3. Valve core; 31. DC motor; 32. Partition part; 5. Power supply shell; 51. Shell body; 511. Sealing groove; 512. Mounting part; 52. Shell cover; 521. Sealing protrusion; 6. Energy storage element; 7. Control element; 8. Power supply rack; 9. Assembly shell. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Figure 1 This is a schematic structural diagram of a disassembled valve body of a gas safety valve provided by an embodiment of the present utility model; Figure 2 This is a schematic structural diagram of the valve body assembly of the gas safety valve provided by an embodiment of the present utility model; Figure 3 This is a structural diagram of the valve core and bracket of the gas safety valve provided by an embodiment of the utility model; Figure 4 This is a structural schematic diagram of the valve core and bracket of the gas safety valve provided by an embodiment of the utility model from another perspective.

[0038] like Figures 1 to 4 As shown, an embodiment of the present invention provides a gas safety valve, including a valve body 1, in which a first air cavity and a second air cavity are provided, and the first air cavity and the second air cavity are both connected to the gas pipeline. A circuit board 2 is provided in the valve body 1, and a first sensor 21 and a second sensor 22 are mounted on the circuit board 2, and the first sensor 21 and the second sensor 22 are respectively located in the first air cavity and the second air cavity. A valve core 3 is also provided in the valve body 1, and the connection state and the interruption state of the first air cavity and the second air cavity can be switched through the action of the valve core 3 in the valve body 1.

[0039] In one of the preferred embodiments, the first air cavity and the second air cavity of the valve body 1 are separated by a bracket 4, and a connecting port 41 for connecting the first air cavity and the second air cavity is provided on the bracket 4. The circuit board 2 is fixedly mounted on the bracket 4, and the on-off switching of the first air cavity and the second air cavity is achieved by closing or opening the connecting port 41 by the valve core 3.

[0040] In the embodiment of the present utility model, a first air cavity and a second air cavity are set in the valve body 1, a circuit board 2 is installed in the valve body 1, and a first sensor 21 and a second sensor 22 are integrated on the circuit board 2. The first sensor 21 and the second sensor 22 are respectively located in the first air cavity and the second air cavity. On the one hand, the first sensor 21 and the second sensor 22 are both installed on the same circuit board 2 and are respectively located in the two air cavities, which can meet the gas detection requirements and reduce the structure of the circuit board 2 and the sensor. On the other hand, the two sensors installed on the same circuit board 2 only need one wiring harness to realize signal exchange with the outside world, and there is no need to set additional connecting wires or connectors, etc., which reduces the overall volume and structural complexity.

[0041] like Figures 1 to 4 As shown, the valve body 1 includes a valve seat 11 and a valve cover 12, wherein the bottom of the valve seat 11 has an opening that matches the bottom surface contour of the bracket 4. After the bracket 4 is fixedly installed on the bottom of the valve seat 11, the bottom surface of the bracket 4 covers the opening of the valve seat 11, thereby dividing the valve body 1 into a first air cavity and a second air cavity located above and below the bracket 4, respectively. The two air cavities are connected to the gas pipeline through the openings on the valve cover 12 and the valve seat 11 respectively; a clearance hole 42 is also provided on the bracket 4, which connects the first air cavity and the second air cavity, and the circuit board 2 is sealed and connected to the bracket 4, so that the circuit board 2 and the bracket 4 jointly divide the valve body 1 into the first air cavity and the second air cavity, and the second sensor 22 is located in the clearance hole 42 on one side of the circuit board, and the first sensor 21 is located on the other side of the circuit board 2, so that the first sensor 21 and the second sensor 22 are located in the first air cavity and the second air cavity respectively.

[0042] The bracket 4 is installed at the bottom of the valve seat 11, so that the first air cavity above the bracket 4 has a larger space, while the second air cavity below the bracket 4 has a smaller space and is directly connected to the gas pipeline. Through this arrangement, the valve core 12, circuit board 2 and other devices are installed above the bracket 4, which can fully utilize the space within the valve seat 11, further improve the compactness of the structure, and reduce the structural volume. It should be noted that the above embodiment is only a preferred embodiment for realizing the function of the first sensor 21 and the second sensor 22 being located in the first air cavity and the second air cavity respectively, and is not the only embodiment of the present invention. The above content should not be regarded as limiting the scope of protection of the present invention.

[0043] In addition, if Figure 2and Figure 3 As shown, a sealing ring can be installed at the bottom of bracket 4. The outline of this sealing ring is located outside the opening of valve seat 11 and the connecting port 41 of bracket 4. When bracket 4 and valve seat 11 are fixedly installed, a second air cavity is formed between the bottom of bracket 4, the top surface of the bottom of valve seat 11, and the sealing ring. This second air cavity has only three gas flow openings: connecting port 41, clearance hole 42, and the opening of valve seat 11. When circuit board 2 closes clearance hole 42 and valve core 3 closes connecting port 41, the second air cavity is disconnected from the first air cavity. In addition, bracket 4 and valve seat 11 can be connected by screws or other installation methods such as welding, as long as the valve seat 11 can be divided into two gas cavities.

[0044] like Figure 4 As shown, in one of the preferred embodiments, the valve core 3 includes a DC motor 31, and a partition part 32 is installed at the output end of the DC motor. The DC motor 31 is fixedly mounted on the bracket 4. By driving the DC motor 31, the partition part 32 can be made to fit the surface of the bracket 4 and close the connecting port 41, thereby realizing the isolation of the first air cavity and the second air cavity.

[0045] In addition, if Figure 4 As shown, in one of the preferred embodiments, the bracket 4 and the valve core 3 can be integrated, that is, the bracket 4 is fixedly installed at the bottom of the valve core 3, and the circuit board 2 is fixedly installed on the bracket 4. When the bracket 4 and the valve body 1 are assembled, the assembly of the valve body 1, the valve core 3 and the circuit board 2 is realized, which can improve the production efficiency of the product.

[0046] In addition, the valve core 3 may also adopt a stepping motor or the like, as long as the switching of the on-off state of the first air cavity and the second air cavity can be completed through the action of the valve core 3 .

[0047] like Figure 1 As shown in FIG, in one preferred embodiment, a first joint and a second joint are provided on the valve body 1, and the first air cavity and the second air cavity are connected to the gas pipeline through the first joint and the second joint respectively. Figure 1 For example, the valve body 1 includes a valve seat 11 and a valve cover 12. The bracket 4 in the valve seat 11 separates the valve body 1 into a first air cavity and a second air cavity, that is, the second air cavity surrounded by the lower part of the valve seat 11 and the bracket 4, and the first air cavity surrounded by the upper part of the valve seat 11, the bracket 4 and the valve cover 12. A first joint is installed on the valve cover 12, and a second joint is installed at the bottom of the valve seat 11 to realize the connection between the air cavity and the gas pipeline.

[0048] In one preferred embodiment, the first joint and / or the second joint may include an interface arranged on the valve body 1, and a mounting sleeve movably arranged on the interface along the axial direction, the mounting sleeve is provided with an internal thread or an external thread, and a sealing gasket is provided on the interface. When the mounting sleeve is connected to the gas pipeline, the mounting sleeve and the interface are sealed via the sealing gasket to achieve a sealed connection between the first air cavity and / or the second air cavity and the gas pipeline.

[0049] For example, the interface can be set to a structure with a "T"-shaped cross-section. The vertical part of the "T" is hollow and is used to connect the air cavity and the gas pipeline. A sealing gasket is sleeved on the outside of the vertical part of the "T". The inner diameter of the sealing gasket is smaller than the diameter of the horizontal part of the "T". A mounting sleeve is sleeved under the sealing gasket of the vertical part of the "T". The mounting sleeve can be a "U"-shaped structure with an open bottom end. When the mounting sleeve is connected to the gas pipeline, the mounting sleeve has a tendency to approach the gas pipeline axially under the action of the thread, that is, it has a tendency to approach the horizontal part of the "T", thereby pressing the sealing gasket to the horizontal part of the "T" to achieve a sealed connection between the gas pipeline and the interface.

[0050] Figure 5 This is a schematic diagram of the structure of the disassembled power supply box in the gas safety valve provided by the embodiment of the utility model; Figure 6 It is a structural diagram of the assembly of the power supply box in the gas safety valve provided by an embodiment of the utility model.

[0051] like Figure 5 and Figure 6 As shown, the power supply box provided by the embodiment of the present invention includes a power supply housing 5, a power storage element 6, and a control element 7. A sealed cavity is provided in the power supply housing 5, and the power storage element 6 and the control element 7 are both disposed in the sealed cavity. By sealing the power storage element 6 and the control element 7 together in the power supply housing 5, the power storage element 6 and the control element 7 are prevented from being exposed to the external environment for a long time, thereby extending the service life of the power supply box.

[0052] like Figure 5 and Figure 6 As shown, in one of the preferred embodiments, the power supply shell 5 includes a shell body 51 and a shell cover 52, and the energy storage element 6 and the control element 7 are both installed inside the shell body 51. The shell cover 52 is sealed to the shell body 51, so that a sealed cavity is formed inside the power supply shell 51, which can protect the energy storage element 6 and the control element 7.

[0053] Figure 8 It is a structural diagram of the installation of the power supply frame and the shell of the power supply box in the gas safety valve provided by the embodiment of the utility model.

[0054] like Figure 8As shown, the shell body 51 is a pocket-shaped structure with a single-sided opening. An annular sealing groove 511 is provided on the outer side of the opening of the shell body 51. A sealing ring is provided in the sealing groove 511. A sealing protrusion 521 having a shape matching the sealing groove 511 is provided on the shell cover 52. When the shell body 51 and the shell cover 52 form a Figure 6 In the assembled state shown, the sealing protrusion 521 presses the sealing ring tightly into the sealing groove 511 to achieve a sealed connection between the housing cover 52 and the housing body 51 .

[0055] Among them, a threaded hole is opened in the shell body 51, and a threaded through hole is opened on the shell cover 52, so that the shell cover 52 and the shell body 51 can be detachably connected by a screw 522. The head of the screw 522 is a cylindrical boss. A number of axial lines are set on the round side surface of the cylindrical boss to facilitate the installer to hold the cylindrical boss with his fingers and turn the screw. During the long-term use of the power supply box, it is inevitable to replace or repair the internal parts. The setting of the screw 522 can facilitate the staff to remove the shell cover 52, making the maintenance of the power supply box more convenient and simple. A radial groove is set on the circular end face of the cylindrical boss. When it is difficult to turn the screw by holding the cylindrical boss with only the fingers, the screw can be turned through the groove with the help of a tool such as a screwdriver.

[0056] In addition, the shell body 51 and the shell cover 52 can also adopt other connection methods, for example, the open end of the shell body 51 is set to be circular, and corresponding internal threads and external threads are set on the open end of the shell body 51 and the shell cover 52, so that the shell body 51 and the shell cover 52 are connected by threads, etc., as long as a detachable and sealed connection between the shell body 51 and the shell cover 52 can be achieved.

[0057] Figure 7 This is a structural diagram of the installation of the power storage element and the control element of the power supply box in the gas safety valve provided by the embodiment of the utility model on the power supply rack; Figure 9 It is a structural diagram of the sealed installation of the shell cover and shell body of the power supply box in the gas safety valve provided by an embodiment of the utility model.

[0058] like Figure 7 and Figure 9 As shown, a power supply rack 8 is detachably installed in the shell body 51 of the power supply housing 5 , and the power storage element 6 is installed on the power supply rack 8 .

[0059] like Figure 7As shown, in a specific embodiment, the energy storage element 6 uses a dry cell battery. Therefore, the power supply rack 8 has side walls with a plurality of cylindrical grooves that match the shape of the dry cell battery, as well as a base for supporting the dry cell battery. Springs and gaskets for connecting the dry cell batteries in series are provided above the base of the power supply rack 8 and below the cover 52 of the power supply housing 5. Therefore, when performing maintenance and repairs on the internal parts of the power supply housing 5, the dry cell battery can be removed and replaced after removing the cover 52, further improving the convenience of using the power supply box. In addition, the energy storage element 6 can also use other types of power sources, and the structure of the power supply rack 8 should match the energy storage element 6.

[0060] In one of the preferred embodiments, a mounting portion 512 is provided at one end of the shell body 51 near the shell cover 52, and the power supply rack 8 is detachably mounted on the mounting portion 512. The mounting portion 512 is provided at a position close to the shell cover 52. When it is necessary to maintain and inspect the internal parts of the power supply shell 5, after the shell cover 52 is removed, the mounting portion 512 is exposed near the opening side of the shell body 51, thereby facilitating the disassembly of the power supply rack 8.

[0061] like Figure 9 As shown, the mounting portion 512 can be a support pad provided near the open end of the shell body 51, with a threaded hole provided in the support pad. The lower end of the power supply frame 8 rests on the support pad, and a threaded through hole matching the threaded hole of the support pad is provided on the power supply frame 8. The power supply frame 8 is detachably connected to the shell body 51 by screws. After removing the shell cover 52, the screws are removed, and the power supply frame 8 can be removed from the shell body 51 to facilitate maintenance and inspection of the internal parts of the power supply shell 5. Further, as Figure 2 As shown, the control element 7 can also be installed on the power supply rack 8. When the power supply rack 8 is removed, the energy storage element 6 and the control element 7 can be removed together.

[0062] In one of the preferred embodiments, a waterproof and breathable membrane is provided on the power supply shell 5, which can connect the sealed cavity inside the power supply shell 5 and the outside of the power supply shell 5, so that the inside of the power supply shell 5 can maintain air pressure balance with the outside world, and can prevent external moisture from entering the inside of the power supply shell 5 and affecting the use of the storage element 6 and the control element 7.

[0063] In one of the preferred embodiments, a power supply port is provided on the power supply housing 5 , and the power supply port can be connected to an external power source, so that the external power source can be used as the power source of the power supply box.

[0064] Since household gas valves are typically installed in corners or hidden inside furniture such as stoves and cabinets, the power supply box provided in this embodiment of the utility model, through the provision of the valve cover 52 and the power supply bracket 8, can facilitate maintenance and repair of the power supply box as much as possible. When the power storage element 6 in the power supply box is exhausted and it is difficult to replace the power storage element 6, an external power source can be connected through the power supply port provided on the power supply housing 5 to ensure the normal use of the gas safety valve.

[0065] Figure 10 This is a structural diagram of the installation of the valve body and the power supply box in the gas safety valve provided by the embodiment of the utility model; Figure 11 It is a schematic diagram of the Linyi structure of the installation of the valve body and the power supply box in the gas safety valve provided by the embodiment of the utility model.

[0066] like Figure 10 and Figure 11 As shown, the power supply shell 5 of the power supply box can be installed on one side of the valve body 1. When the valve body 1 is installed in the gas pipeline, the power supply box is also installed. The power supply of the power storage element 6 of the power supply box or the power supply port on the power supply shell 5 is used to power the circuit board 2 and the valve core 3 in the valve body 1, making the gas safety valve easier to use.

[0067] In one of the preferred embodiments, a first port is provided on the power supply shell 5, and a second port is provided on the valve body 1. An electrical connection line between the energy storage element 6 and the control element 7 is provided in the first port, and an electrical connection line between the circuit board 2 and the valve core 3 is provided in the second port. The power supply shell 5 and the electrical components in the shell 1 are electrically connected through the first port and the second port.

[0068] Among them, the first port and the second port can be integrated ports arranged on the power supply shell 5 and the valve body 1, and the interface of the integrated port is located on the outside of the power supply shell 5 and the valve body 1. The interfaces of the two integrated ports are connected by external electrical connecting lines, which can realize signal transmission and ensure the sealing state of the power supply shell 5 and the valve body 1; the first port and the second port can also be openings opened on the power supply shell 5 and the valve body 1, and the electrical connecting lines pass through the openings into the power supply shell 5 and the valve body 1 and realize electrical connection. After the electrical connecting lines are assembled, the electrical connecting lines at the openings are glued to ensure the sealing state of the power supply shell 5 and the valve body 1.

[0069] like Figure 11 As shown, in one preferred embodiment, a final assembly housing 9 is installed outside the valve body 1 and the power supply housing 5. The final assembly housing 9 covers the exterior of the gas safety valve and protects the connecting wires between the first and second ports, as well as the structure of the valve body 1 and the power supply housing 5. The final assembly housing 6 can be provided with a recess for the housing cover 52, so as not to affect the removal and installation of the housing cover 52.

[0070] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A gas safety valve, characterized in that: include: A valve body, wherein a first air cavity and a second air cavity are provided in the valve body, and the first air cavity and the second air cavity are both connected to the gas pipeline; a circuit board installed in the valve body, wherein a first sensor and a second sensor are integrated on the circuit board, and the first sensor and the second sensor are located in the first air cavity and the second air cavity respectively; The valve core is movably arranged in the valve body. The movement of the valve core in the valve body can switch the connection state and the interruption state of the first air cavity and the second air cavity.

2. The gas safety valve according to claim 1, characterized in that: The first air cavity and the second air cavity of the valve body are separated by a bracket, and the bracket is provided with a communication port connecting the first air cavity and the second air cavity; The circuit board is fixedly mounted on the bracket so that the first sensor and the second sensor are located in the first air cavity and the second air cavity respectively; The communication port can be opened or closed based on the movement of the valve element in the valve body.

3. The gas safety valve according to claim 2, characterized in that: The valve core includes a DC motor, which is installed in the first air cavity or the second air cavity of the valve body. The output end of the DC motor faces the connecting port. A partition part matching the connecting port is installed at the output end of the DC motor. Based on the output of the DC motor, the partition part can cooperate with the connecting port and close the connecting port.

4. The gas safety valve according to claim 3, characterized in that: The bracket is further provided with a clearance hole, which connects the first air cavity and the second air cavity. The circuit board is sealed and installed on the clearance hole to form the first sensor and the second sensor in the valve body, which are respectively located in the first air cavity and the second air cavity.

5. The gas safety valve according to claim 1, characterized in that: It also includes a first joint and a second joint, both of which are installed on the valve body, and the first air cavity and the second air cavity are connected to the gas pipeline through the first joint and the second joint respectively.

6. The gas safety valve according to claim 5, characterized in that: The first joint and / or the second joint comprises an interface mounted on the valve body and a mounting sleeve movably arranged on the interface along the axial direction of the interface, the mounting sleeve being provided with an internal thread or an external thread, and the interface being further provided with a sealing gasket; Wherein, when the installation sleeve is connected to the gas pipeline via an internal thread or an external thread, the installation sleeve and the interface are sealed via the sealing gasket.

7. The gas safety valve according to any one of claims 1 to 6, characterized in that: Also included is a power supply box, which includes: An electricity storage element and a control element, wherein the electricity storage element, the control element, the valve core and the circuit board are electrically connected; A power supply shell is connected to the valve body, a sealed cavity is provided in the power supply shell, and the power storage element and the control element are both installed in the sealed cavity.

8. The gas safety valve according to claim 7, characterized in that: The power supply shell includes a shell body and a shell cover. The shell body and the shell cover are sealed to form the sealed cavity. A power supply rack is detachably provided in the shell body, and the power storage element is installed on the power supply rack.

9. The gas safety valve according to claim 7, characterized in that: The power supply housing is provided with a power supply port, and the power supply port can be connected to an external power source to supply power to the power supply box through the external power source.

10. The gas safety valve according to claim 7, characterized in that: The power supply housing is provided with a first port, the valve body is provided with a second port, and the power supply housing and the valve body are electrically connected through the first port and the second port.

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