Push type gas switch valve

Abstract

A pressing type gas switch valve comprises a valve body, a valve element, a valve rod, a valve element spring, a guide seat, a valve cover, an ejector rod, a reset spring and a driving self-locking device, the valve body comprises a gas inlet connector pipe, a valve element cavity, a valve element seat, a gas outlet cavity, a gas outlet connector pipe and a driving cavity, the valve rod extends out of the guide seat through a valve rod channel, and the end of the valve rod is fixed to the valve element. The guide seat is inserted into the valve element cavity, the annular seat plate is attached to the open end, the valve deck and the valve element cavity are screwed to fix the guide seat, the head is inserted into the valve element spring, the valve element spring is matched with the valve element and the guide seat, and the valve element is matched with the valve element seat. The ejector rod penetrates through the reset spring, extends into the valve element cavity through the guide hole and the air outlet cavity and is matched with the end of the valve rod. The driving self-locking device is arranged at the open end of the driving cavity and matched with the ejector rod. When the driving self-locking device is pressed, the ejector rod drives the valve rod and the valve element to leave the valve element seat; then the driving self-locking device is pressed, and automatic closing is achieved under the action of the valve element spring and the reset spring; the operation is convenient.

Description

Technical Field

[0001] The utility model relates to a gas switch valve for gas appliances. Background Art

[0002] In the current prior art, Chinese Patent CN200610029891.9, a spring-magnetic-control reclosure gas motor valve, its technical features are as follows: it adopts an organic combination of a set of main magnetic steel, auxiliary magnetic steel and spring with opposite polarities attracting each other. The main and auxiliary magnetic steels adsorb to complete the valve opening, and the spring relaxes to complete the valve closing. The cycle of the main and auxiliary magnetic steels adsorbing - the spring relaxing is repeated to complete the functions of opening and closing the valve. Since an isolation zone is formed in the magnetic field space between the main and auxiliary magnetic steels, the motor can be installed in a fully enclosed motor box, achieving the purpose of completely and reliably isolating the motor from the gas. The existing problems are: the structure is complex and a power supply is also required. Content of the Utility Model

[0003] The purpose of the utility model is to provide a push-button gas switch valve, which has the characteristic that the switch can be realized by pressing.

[0004] The utility model is realized as follows: a push-button gas switch valve, which is special in that it includes a valve body, a valve core, a valve rod, a valve core spring, a guide seat, a valve cover, a push rod, a return spring and a driving self-locking device.

[0005] The valve body includes an air inlet connecting pipe, a valve core cavity with one end open, a valve core seat, an air outlet cavity, an air outlet connecting pipe and a driving cavity. A guide hole is provided on the partition between the driving cavity and the air outlet cavity.

[0006] The guide seat has one end open and hollow, and includes a head, a valve rod channel and an annular seat plate.

[0007] The push rod is provided with a transmission head.

[0008] The valve rod extends out of the guide seat through the valve rod channel and is fixed to the valve core at the end. The guide seat is inserted into the valve core cavity, and the annular seat plate fits with the open end. The valve cover is screwed to the valve core cavity to fix the guide seat. The head is inserted into the valve core spring, and the valve core spring cooperates with the valve core and the guide seat. The valve core cooperates with the valve core seat. The push rod passes through the return spring, extends into the valve core cavity through the guide hole and the air outlet cavity, and cooperates with the end of the valve rod. The driving self-locking device is arranged at the open end of the driving cavity and cooperates with the push rod.

[0009] The special feature of the described push-button gas switch valve is that: a sealing counterbore is provided at one end of the guide hole located in the driving cavity.

[0010] It also includes a gasket and a sealing ring.

[0011] The sealing ring is arranged in the sealing counterbore, the gasket seals the sealing counterbore, and the push rod passes through the gasket and the sealing ring.

[0012] The described push - type gas switch valve is characterized in that: the driving and self - locking device includes a cylindrical seat with an open end, a driving rod and a transmission member.

[0013] The cylindrical seat includes a rod hole, a tooth cavity, axial teeth arranged in the tooth cavity and a light cavity. The lower end of the axial teeth is left - hand or right - hand helical and is provided with a locking notch, and axial shallow grooves are arranged on the axial teeth. The tooth cavities between two adjacent axial teeth form axial deep grooves.

[0014] The driving rod includes a guiding cavity with an open end, a driving tooth arranged at the open end and axial protrusions arranged at the annular lower end. The driving tooth is angular, and the number of driving teeth and axial protrusions is the same.

[0015] The transmission member includes a guiding rod, a circular body part and driven teeth arranged around the circular body part. The upper end of the driven teeth is right - hand or left - hand helical; the number of driven teeth and axial deep grooves is the same and is half of the number of driving teeth and axial protrusions.

[0016] The driving rod extends into the cylindrical seat from the rod hole, and the axial protrusions are in sliding fit with the axial deep grooves and axial shallow grooves. The guiding rod is in sliding fit with the guiding cavity, the driven teeth are in sliding fit with the light cavity and the axial deep grooves, and the driving teeth and the driven teeth are meshed; the driven teeth are in sliding fit with the lower end of the axial teeth and are in fit with the locking notch; the cylindrical seat is screwed with the driving cavity, and the circular body part is in fit with the transmission head.

[0017] The described push - type gas switch valve is characterized in that: there are four driven teeth and axial teeth respectively, and eight driving teeth and axial protrusions are arranged.

[0018] In the push - type gas switch valve of the present utility model, when the driving and self - locking device is pressed, the ejector rod drives the valve rod and the valve core to leave the valve core seat; when the driving and self - locking device is pressed again, it automatically closes under the action of the valve core spring and the return spring, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross - sectional view of the present utility model.

[0020] Figure 2 is Figure 1 the A - A view of

[0021] Figure 3 is Figure 1 the B - B view of

[0022] Figure 4 is a cross - sectional view of the present utility model in the valve - opening state.

[0023] Figure 5 is one of the three - dimensional exploded views of the present utility model.

[0024] Figure 6 is the other three - dimensional exploded view of the present utility model.

[0025] Figure 7 This is the third exploded perspective view of the present utility model.

[0026] Figure 8 This is the perspective view of the present utility model. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] As Figure 1 shown, a push-button gas switch valve includes a valve body 1, a valve core 2, a valve rod 3, a valve core spring 4, a guide seat 5, a valve cover 6, a push rod 7, a return spring 8, and a driving self-locking device 9.

[0030] The valve body 1 includes an air inlet connecting pipe 11, a valve core cavity 12 with one end open, a valve core seat 13, an air outlet cavity 14, an air outlet connecting pipe 15, and a driving cavity 16. A guide hole is provided on the partition between the driving cavity 16 and the air outlet cavity 14; the air inlet connecting pipe 11, the valve core cavity, the valve core seat, the air outlet cavity, and the air outlet connecting pipe are connected in sequence.

[0031] The guide seat 5 has a hollow end that is open and includes a head 51, a valve rod channel 52, and an annular seat plate 53.

[0032] The push rod 7 is provided with a transmission head 71.

[0033] The valve rod 3 extends out of the guide seat 5 through the valve rod channel 52 and is fixed to the valve core 2 at its end. The guide seat 5 is inserted into the valve core cavity 12, and the annular seat plate 53 is attached to the open end. The valve cover 6 is screwed to the valve core cavity 12 to fix the guide seat 5. The head 51 is inserted into the valve core spring 4, and the valve core spring 4 cooperates with the valve core and the guide seat 5. The valve core 2 cooperates with the valve core seat 13. The push rod 7 passes through the return spring 8, extends into the valve core cavity 12 through the guide hole and the air outlet cavity 14, and cooperates with the end of the valve rod 3. The driving self-locking device is arranged at the open end of the driving cavity 16 and cooperates with the push rod 7.

[0034] As a further improvement of the present utility model: one end of the guiding hole located in the driving cavity 16 is provided with a sealing counterbore 17;

[0035] It further includes a sealing ring 171 and a gasket 172.

[0036] The sealing ring 171 is arranged in the sealing counterbore 17, the gasket 172 closes the sealing counterbore 17, the ejector rod 7 passes through the gasket 172 and the sealing ring 172, and the return spring 8 cooperates with the gasket 172.

[0037] Such as Figure 1 、 Figure 5 、 Figure 6 As shown, the driving self-locking device 9 includes a cylindrical seat 91 with one end open, a driving rod 92 and a transmission member 93.

[0038] The cylindrical seat 91 includes a rod hole 911, a tooth cavity 912, an axial tooth 913 arranged in the tooth cavity 912 and a light cavity 914. The lower end of the axial tooth 913 is left-handed or right-handed and is provided with a locking notch 915. An axial shallow groove 9131 is arranged on the axial tooth 913, and the axial shallow groove 9131 communicates with the locking notch 915. The tooth cavity 912 between two adjacent axial teeth 913 forms an axial deep groove 916; the axial tooth 913 is arc-shaped.

[0039] The driving rod 92 includes a guiding cavity 921 with one end open, a driving tooth 922 arranged at the open end and an axial protrusion 923 arranged at the annular lower end. The driving tooth 922 is angular, and the number of the driving tooth 922 and the axial protrusion 923 is the same and corresponding.

[0040] The transmission member 93 includes a guiding rod 931, a circular body part 932 and a driven tooth 933 arranged around the circular body part 932. The upper end of the driven tooth 933 is right-handed or left-handed; the number of the driven tooth 933 and the axial deep groove 916 is the same and is half of the number of the driving tooth 922 and the axial protrusion 923.

[0041] The driving rod 92 extends into the cylindrical seat 91 from the rod hole 911, and the axial protrusion 923 is in sliding fit with the axial deep groove 916 and the axial shallow groove 9131. The guiding rod 931 is in sliding fit with the guiding cavity 921, the driven tooth 933 is in sliding fit with the light cavity 914 and the axial deep groove 916, and the circular body part 932 is in sliding fit or clearance fit with the axial tooth 913; the driving tooth 922 and the driven tooth 933 are meshed; the driven tooth 933 is in sliding fit with the lower end of the axial tooth 913 and cooperates with the locking notch 915; the cylindrical seat 91 is screwed with the driving cavity 16, and the circular body part 932 cooperates with the transmission head 71.

[0042] As a further improvement of the present utility model: there are four driven teeth 933 and axial teeth 913 respectively, and eight driving teeth 922 and axial protrusions 923 are arranged.

[0043] Figure 1 This is the view of the cut-off state of this embodiment. Under the action of the valve core spring 4 and the gas pressure, the valve core 2 is closely attached to and sealed with the valve core seat 13, improving the sealing performance;

[0044] Press the drive rod 92, and the drive rod 92 moves downward. The axial protrusion 923 moves within the axial shallow groove 9131 and the axial deep groove 916; at the same time, the driving gear 922 acts on the driven gear 933 on the transmission member 93, the transmission member 93 moves downward, the upper end of the driven gear 933 leaves the axial deep groove 916, and then rotates. The driven gear 933 enters the locking notch 915 and stops; the circular body portion 932 of the transmission member 93 acts on the transmission head 71 of the ejector rod 7, and the ejector rod moves downward and compresses the return spring; the ejector rod 7 acts on the valve stem 3, and the valve core 2 leaves the valve core seat 13; the gas flows out from the gas inlet interface pipe, the valve core cavity, the air guide hole on the valve core seat, and the air outlet cavity through the gas outlet interface pipe, and is in the guiding channel state for the combustion of the gas stove, as Figure 4 shown in the state;

[0045] As Figure 4 shown in the conduction state, press the drive rod 92 again. The driving gear 922 acts on the driven gear 933, the drive rod moves downward, the driven member moves downward and leaves the locking notch, and then rotates. The driven gear 933 enters another axial deep groove 916; under the action of the valve core spring and the return spring, the valve stem and the valve core move upward, the ejector rod 1 drives the circular body portion 932 of the transmission member 93, and the transmission member and the drive rod move upward; the upper end of the axial protrusion 923 cooperates with the top plate of the cylindrical seat 91 to stop, and the cut-off state is switched, as Figure 1 shown.

[0046] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A push-type gas switch valve, characterized in that: It includes a valve body, a valve core, a valve stem, a valve core spring, a guide seat, a valve cover, a push rod, a return spring and a driving self-locking device. The valve body includes an air inlet connecting pipe, a valve core cavity with one end open, a valve core seat, an air outlet cavity, an air outlet connecting pipe and a driving cavity. A guide hole is provided on the partition between the driving cavity and the air outlet cavity. The guide seat has one end hollow and open, and includes a head, a valve stem passage and an annular seat plate. The push rod is provided with a transmission head. The valve stem extends out of the guide seat through the valve stem passage and is fixed to the valve core at its end. The guide seat is inserted into the valve core cavity, and the annular seat plate fits with the open end. The valve cover is screwed with the valve core cavity to fix the guide seat. The head is inserted into the valve core spring, and the valve core spring cooperates with the valve core and the guide seat. The valve core cooperates with the valve core seat. The push rod passes through the return spring, extends into the valve core cavity through the guide hole and the air outlet cavity, and cooperates with the end of the valve stem. The driving self-locking device is arranged at the open end of the driving cavity and cooperates with the push rod.

2. The push-button gas switch valve according to claim 1, wherein: A sealing counterbore is provided at one end of the guide hole located in the driving cavity. It also includes a gasket and a sealing ring. The sealing ring is arranged in the sealing counterbore, and the gasket seals the sealing counterbore. The push rod passes through the gasket and the sealing ring.

3. The push-button gas switch valve according to claim 1, characterized in that: The driving self-locking device includes a cylindrical seat with one end open, a driving rod and a transmission part. The cylindrical seat includes a rod hole, a tooth cavity, an axial tooth arranged in the tooth cavity and a smooth cavity. The lower end of the axial tooth is left-handed or right-handed and is provided with a locking notch. An axial shallow groove is provided on the axial tooth. The tooth cavity between two adjacent axial teeth forms an axial deep groove. The driving rod includes a guide cavity with one end open, a driving tooth arranged at the open end and an axial protrusion arranged at the annular lower end. The driving tooth is angular, and the number of driving teeth and axial protrusions is the same. The transmission part includes a guide rod, a circular body part and a driven tooth arranged around the circular body part. The upper end of the driven tooth is right-handed or left-handed. The number of driven teeth and axial deep grooves is the same and is half of the number of driving teeth and axial protrusions. The driving rod extends into the cylindrical seat from the rod hole. The axial protrusion is in sliding fit with the axial deep groove and the axial shallow groove. The guide rod is in sliding fit with the guide cavity. The driven tooth is in sliding fit with the smooth cavity and the axial deep groove. The circular body part is in sliding fit or clearance fit with the axial tooth. The driving tooth and the driven tooth are meshed. The driven tooth is in sliding fit with the lower end of the axial tooth and is in cooperation with the locking notch. The cylindrical seat is screwed with the driving cavity, and the circular body part is in cooperation with the transmission head.

4. The push-button gas switch valve according to claim 3, characterized in that: Four driven teeth and axial teeth are respectively provided, and eight driving teeth and axial protrusions are provided.

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