Automatic gas cut-off valve convenient to install

Abstract

The utility model relates to an automatic gas cut-off valve body convenient to install, which comprises a scavenging gas valve, one side of the scavenging gas valve is communicated with an installation pipe, a control valve is inserted into the installation pipe, and the control valve determines whether a gas inlet valve can convey gas in a gas pipe into a furnace end or not. Specifically, a limiting ring is arranged outside the mounting pipe in a sleeving mode, a driven ring is arranged outside the control valve in a sleeving mode, a limiting groove with the projection of the horizontal layer being of a U-shaped structure is formed in the limiting ring, and a limiting shaft is fixedly connected to the end face of the side, close to the mounting pipe, of the driven ring. And by means of the restraining effect of the limiting groove on the limiting shaft, the control valve only needs to be rotated in the replacement process, and the problem that in a traditional technical device, screws in a narrow space are inconvenient to detach, and consequently the control valve is inconvenient to replace is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stove component replacement, in particular to an automatic gas shut-off valve body which is easy to install. Background Art

[0002] As a cooking appliance, gas stoves are widely used in home kitchens, restaurant kitchens and other occasions. A gas stove generally includes a stove body and a burner. An air exchange valve is provided inside the stove body. The gas pipeline and the burner are respectively connected to the air exchange valve. The gas in the gas pipe is transferred to the burner through the air exchange valve.

[0003] In the prior art device, when the flame is extinguished due to various reasons and the burner continues to emit flames, the enclosed space is very likely to cause harm to the human body due to the increase in the internal gas content.

[0004] Therefore, gas stoves with automatic gas cut-off function are very popular at present. Gas stoves with automatic gas cut-off function generally have a mounting pipe connected to the gas exchange valve, and a control valve is inserted inside the mounting pipe. When the control valve blocks the mounting pipe, the gas in the gas pipe cannot be transferred to the stove head.

[0005] In the prior art device, a matching plate is generally fixedly connected to the outside of the control valve, and a fixing plate is arranged on the side of the mounting pipe away from the air intake pipe for the matching plate. Through holes are provided on the fixing plate and the matching plate, and the fixing plate and the matching plate are connected by screws through the through holes.

[0006] However, in the prior art device, due to the limited space inside the stove body and the screw fixing method requiring continuous twisting, it is difficult for operators to complete the disassembly and replacement of the control valve in a narrow space. Therefore, we believe that there is a need for a gas stove with an automatic gas shut-off function that can more conveniently complete the control valve replacement process. Summary of the invention

[0007] In view of the deficiencies in the prior art, the utility model proposes an automatic air shut-off valve body that is easy to install, has the advantage of being easy to disassemble and replace the control valve, and solves the disadvantage of the prior art device that it is inconvenient to operate in a narrow space.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] The control valve body is convenient for installation and comprises a ventilation valve, wherein one side of the ventilation valve is connected to a mounting tube, a control valve is inserted in the mounting tube, a part of the control valve located outside the mounting tube is electrically connected to a thermocouple, a part of the control valve located outside the mounting tube is sleeved with a driven ring, a limit shaft is fixedly connected to an end face of the driven ring close to one side of the mounting tube, a limit ring is sleeved on the outside of the mounting tube close to the thermocouple, a limit groove with a U-shaped structure projected on the horizontal plane is provided on the limit ring, and one horizontal section of each limit groove is an open structure close to one end of the thermocouple, the limit shaft is inserted in the limit groove, and the control valve comprises an embedded section and a mating section, wherein the embedded section of the control valve is inserted in the inner cavity of the mounting tube, and when the limit shaft is fully inserted into the limit groove, the mating section of the control valve abuts against the mounting tube.

[0010] Preferably, the mating section of the control valve is fixedly connected to a rubber sealing gasket close to one side of the mounting tube. When the limiting shaft is fully inserted into the limiting groove, the distance between the end face of the sealing gasket close to the mounting tube and the mounting tube is less than the thickness of the sealing gasket.

[0011] Preferably, each of the limit grooves comprises a horizontal section I, a horizontal section II, and a vertical section, wherein the horizontal section I of the limit groove close to one end of the thermocouple is an open structure, the projection length of the horizontal section II of the limit groove on the horizontal plane is greater than the radius of the limit axis, the distances between the two sides of the vertical section of each limit groove and the control valve are not equal, and the distance between the vertical section close to the horizontal section I and the thermocouple is smaller than the distance between the vertical section close to the horizontal section II and the thermocouple.

[0012] Preferably, the difference in distance between the two ends of the vertical section of each of the limiting grooves and the thermocouple in the horizontal plane is smaller than the limit compression length of the sealing gasket.

[0013] Preferably, a sealing ring made of rubber is sleeved on the outer side of the embedded section of the control valve, and the outer diameter of the sealing ring is greater than the inner diameter of the installation pipe.

[0014] Preferably, the driven ring and the limiting ring are both two-section structures, and the two-section structures constituting the driven ring and the limiting ring are fixedly connected by bolts and nuts.

[0015] Preferably, a damping ring made of rubber is sleeved on the outer side of the limiting shaft, and the outer diameter of the damping ring is greater than the width of the limiting groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model fixes a limit ring on the outside of the mounting tube, fixes a driven ring on the outside of the control valve, and utilizes the restraining effect of the limit groove on the limit shaft, so that the control valve can be replaced only by rotating it. This gets rid of the problem of inconvenient removal of screws in narrow space in traditional technical devices, which causes inconvenience in replacing the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cooperation between the driven ring and the control valve of the utility model;

[0020] Figure 3 It is a schematic diagram of the position relationship between the driven ring and the limiting ring of the utility model.

[0021] In the figure: 1. ventilation valve; 2. mounting pipe; 3. control valve; 4. thermocouple; 5. driven ring; 6. sealing gasket; 7. sealing ring; 8. nut; 9. bolt; 10. limit shaft; 11. damping ring; 12. limit ring; 13. limit groove; 131. horizontal section II; 132. vertical section; 133. horizontal section I. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Please refer to Figure 1-3 , an automatic gas shut-off valve body which is easy to install, consistent with the traditional device, the device comprises a gas exchange valve 1 and a control valve 3, wherein the gas exchange valve 1 comprises an air inlet pipe for connecting with the gas pipeline, and an air outlet pipe for connecting with the burner head, and at the same time, a mounting pipe 2 is also arranged on the gas exchange valve 1.

[0025] It should be noted that the air inlet pipe and the air outlet pipe are both connected to the mounting pipe 2, and the mounting pipe 2 is provided with a clamping ring structure for closing the air inlet pipe and the mounting pipe 2, which belongs to the conventional technology in the field and will not be described here.

[0026] Therefore, by inserting the control valve 3 inside the mounting tube 2, as shown in the figure, the control valve 3 is slidably connected with a push rod near the side of the ventilation valve 1, and a compression spring is sleeved on the outside of the push rod. By changing the position of the push rod, the corresponding clamping ring can be controlled, and then whether the intake pipe can be connected to the outlet pipe through the mounting tube 2 can be controlled.

[0027] Specifically, consistent with the prior art devices, the device is electrically connected to a thermocouple 4 at the part of the control valve 3 protruding from the mounting tube 2. When the thermocouple 4 is heated, the push rod is adsorbed and the compression spring accumulates elastic potential energy. At this time, the air inlet pipe and the air outlet pipe are connected. When the thermocouple 4 is no longer heated, the compression spring releases the elastic potential energy. At this time, the push rod can block the ventilation channel between the air inlet pipe and the air outlet pipe. This is a conventional technical means in the field for preventing accidental extinction of gas and automatically cutting off the gas, which will not be elaborated here.

[0028] It should be noted that in the prior art device, a matching plate is generally fixedly connected to the outside of the control valve 3, and a fixing plate is provided for the matching plate on the side of the mounting tube 2 away from the air intake pipe. Through holes are provided on the fixing plate and the matching plate, and the fixing plate and the matching plate are connected by screws using the through holes.

[0029] Therefore, in order to facilitate disassembly and installation, the present device abandons the traditional matching plate and the fixing plate. The present device provides a driven ring 5 on the part of the control valve 3 located outside the mounting tube 2, and the driven ring 5 is fixedly connected to the limiting shaft 10 on the end face close to the mounting tube 2.

[0030] In the device, a limiting ring 12 is sleeved on the outside of the mounting tube 2 near the thermocouple 4, and a limiting groove 13 with a U-shaped structure projected on the horizontal plane is opened on the limiting ring 12. By inserting the limiting shaft 10 into the limiting groove 13, the distance between the limiting shaft 10 and the central axis of the driven ring 5 remains unchanged, thereby ensuring that the distance between the limiting shaft 10 located inside the limiting shaft 10, that is, the driven ring 5 and the limiting ring 12 cannot change. This can achieve the purpose of fixing the control valve 3 in the mounting tube 2 without changing its position.

[0031] At the same time, the device constrains each limiting groove 13 to be divided into a limiting groove 13 including a horizontal section I 133 , a horizontal section II 131 , and a vertical section 132 according to its U-shaped structural characteristics.

[0032] Therefore, the device constrains the horizontal section Ⅰ133 of each limit groove 13 to be an open structure near the end of the thermocouple 4. In practice, when the user inserts the control valve 3 into the installation pipe 2, the user can simultaneously complete the position coordination between the limit shaft 10 and the limit groove 13, ensuring that the limit shaft 10 can synchronously enter the limit groove 13 during this process. After that, the coordination position of the limit shaft 10 and the limit groove 13 is changed by rotating the driven ring 5, and the limit shaft 10 is restrained by the vertical section 132 or the horizontal section Ⅱ131 of the limit groove 13, that is, the position between the driven ring 5 and the limit ring 12 is prevented from changing.

[0033] Furthermore, the device constrains the control valve 3 to include an embedded section and a mating section, and the embedded section of the control valve 3 is inserted into the inner cavity of the mounting tube 2. At this time, a sealing ring 7 made of rubber is sleeved on the outside of the embedded section, and the outer diameter of the sealing ring 7 is constrained to be greater than the inner diameter of the mounting tube 2, so that the sealing ring 7 entering the mounting tube 2 can fit tightly with the inner wall of the mounting tube 2, thereby ensuring that the gas cannot overflow from the gap between the mounting tube 2 and the control valve 3.

[0034] Furthermore, the device also fixes a rubber sealing gasket 6 on the side of the matching section of the control valve 3 close to the mounting tube 2. At this time, it is only necessary to ensure that the sealing gasket 6 and the mounting tube 2 are also in a tight fit to further improve the sealing effect between the mounting tube 2 and the control valve 3.

[0035] Therefore, the device constrains that when the limiting shaft 10 is fully inserted into the limiting groove 13, that is, when the limiting shaft 10 is located in the limiting groove 13, the distance between the end face of the sealing gasket 6 close to the mounting tube 2 and the mounting tube 2 is less than the thickness of the sealing gasket 6.

[0036] At the same time, it should be noted that the present device utilizes the U-shaped structural state of the limit groove 13 itself, combined with the tight fit between the sealing gasket 6 and the mounting tube 2 to apply a reaction force to the driven ring 5, which can ensure that when the limit shaft 10 is located inside the horizontal section II 131, the limit shaft 10 still has a movement state away from the ventilation valve 1. This movement state can prevent the limit shaft 10 from returning to the vertical section 132 and rotating arbitrarily, which can ensure the stability of the connection between the control valve 3 and the mounting tube 2.

[0037] At the same time, in order to ensure that the limiting axis 10 can be stably located inside the horizontal section II131 in the absence of external force, the projection length of the horizontal section II131 of the limiting groove 13 of the device on the horizontal plane is greater than the radius of the limiting axis 10.

[0038] Furthermore, in order to reduce equipment loss, a damping ring 11 made of rubber is sleeved on the outer side of the limiting shaft 10 of the device.

[0039] At the same time, by constraining the outer diameter of the damping ring 11 to be greater than the width of the limiting groove 13, combined with the horizontal section II131 located inside the limiting groove 13, the active deformation of the damping ring 11 can further prevent the driven ring 5 from rotating relative to the limiting ring 12 when it is not necessary.

[0040] Furthermore, in order to improve the fitting state between the sealing gasket 6 and the mounting tube 2 and reduce the actual operation difficulty of moving the limit shaft 10 from the horizontal section Ⅰ133 to the horizontal section Ⅱ131, the present device constrains the distances between the two sides of the vertical section 132 of the limit groove 13 and the control valve 3 to be unequal, and the distance between the side of the limit groove 13 close to the horizontal section Ⅰ133 and the thermocouple 4 is smaller than the distance between the side of the limit groove 13 close to the horizontal section Ⅱ131 and the thermocouple 4, thereby exchanging a longer moving distance for a smaller deformation length.

[0041] Therefore, in order to ensure that the device is feasible, the device also needs to constrain the difference in horizontal distance between the two ends of the limiting groove 13 and the thermocouple 4 to be less than the maximum compression length of the sealing gasket 6 .

[0042] Furthermore, in order to enhance the convenience of installation and coordination of the limiting ring 12 and the driven ring 5, the present device constrains the driven ring 5 and the limiting ring 12 to be a two-stage structure, and the two-stage structure of the driven ring 5 and the limiting ring 12 is fixedly connected by bolts 9 and nuts 8.

[0043] In actual use of the utility model, if the control valve 3 needs to be replaced, then:

[0044] First, select a suitable new control valve 3 and a matching thermocouple 4, and at the same time, remove the upper panel of the gas stove. At this time, the air exchange valve 1 and related components are exposed to the operator's field of vision;

[0045] Then, the old control valve 3 is moved toward the installation pipe 2. At this time, the driven ring 5 is rotated synchronously. When the driven ring 5 moves to the inside of the horizontal section I 133, the old control valve 3 is unplugged.

[0046] Afterwards, the driven ring 5 on the old control valve 3 is disassembled by using the corresponding screws, and at the same time, the driven ring 5 is installed on the outside of the new control valve 3;

[0047] Finally, insert the new control valve 3 into the inner wall of the mounting tube 2, and ensure that the limit shaft 10 is synchronously inserted into the inside of the horizontal section I133. At this time, rotate the driven ring 5 until the limit shaft 10 is located inside the horizontal section II131, then loosen the driven ring 5, and the damping ring 11 automatically abuts against the inner wall of the horizontal section II131 close to the driven ring 5. At this time, the new control valve 3 is replaced.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic shut-off valve body that is easy to install, characterized in that: It comprises a ventilation valve (1), one side of the ventilation valve (1) is connected to a mounting pipe (2), a control valve (3) is inserted into the mounting pipe (2), and a portion of the control valve (3) located outside the mounting pipe (2) is electrically connected to a thermocouple (4); The part of the control valve (3) located outside the mounting tube (2) is sleeved with a driven ring (5), and the end surface of the driven ring (5) close to the mounting tube (2) is fixedly connected to a limiting axis (10); The mounting tube (2) is provided with a limiting ring (12) on the outer side of the side close to the thermocouple (4), and the limiting ring (12) is provided with a limiting groove (13) with a horizontal plane projection of a U-shaped structure, and one horizontal section of each limiting groove (13) is an open structure at one end close to the thermocouple (4); The limit shaft (10) is inserted into the limit groove (13), and the control valve (3) comprises an embedded section and a matching section, wherein the embedded section of the control valve (3) is inserted into the inner cavity of the mounting tube (2), and when the limit shaft (10) is completely inserted into the limit groove (13), the matching section of the control valve (3) abuts against the mounting tube (2).

2. An automatic shut-off valve body that is easy to install according to claim 1, characterized in that: The mating section of the control valve (3) is fixedly connected to a sealing gasket (6) made of rubber material near one side of the mounting tube (2); when the limiting shaft (10) is fully inserted into the limiting groove (13), the distance between the end face of the sealing gasket (6) near the side of the mounting tube (2) and the mounting tube (2) is less than the thickness of the sealing gasket (6).

3. The automatic shut-off valve body that is easy to install according to claim 2 is characterized in that: Each of the limiting grooves (13) comprises a horizontal section I (133), a horizontal section II (131), and a vertical section (132), wherein the horizontal section I (133) of the limiting groove (13) is an open structure at one end close to the thermocouple (4), and the projection length of the horizontal section II (131) of the limiting groove (13) on the horizontal plane is greater than the radius of the limiting axis (10); The distances between the two sides of the vertical section (132) of each limiting groove (13) and the control valve (3) are not equal, and the distance between the side of the vertical section (132) close to the horizontal section I (133) and the thermocouple (4) is smaller than the distance between the side of the vertical section (132) close to the horizontal section II (131) and the thermocouple (4).

4. The automatic shut-off valve body that is easy to install according to claim 3 is characterized in that: The difference in distance between the two ends of the vertical section (132) of each limiting groove (13) and the thermocouple (4) in the horizontal plane is less than the limit compression length of the sealing gasket (6).

5. The automatic shut-off valve body that is easy to install according to claim 1 is characterized in that: A sealing ring (7) made of rubber is sleeved on the outside of the embedded section of the control valve (3), and the outer diameter of the sealing ring (7) is greater than the inner diameter of the installation pipe (2).

6. The easy-to-install automatic shut-off valve body according to claim 1, characterized in that: The driven ring (5) and the limiting ring (12) are both two-section structures, and the two-section structures constituting the driven ring (5) and the limiting ring (12) are fixedly connected by bolts (9) and nuts (8).

7. The automatic shut-off valve body that is easy to install according to claim 1 is characterized in that: A damping ring (11) made of rubber material is sleeved on the outer side of the limiting shaft (10), and the outer diameter of the damping ring (11) is greater than the width of the limiting groove (13).

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