Safety gas control valve

Abstract

The safety gas control valve comprises a valve seat, a valve cover, a valve rod, a static iron core, a movable iron core, a buckle assembly and a driving device, the valve cover is installed at the top end of the valve seat, the valve rod is vertically, elastically and slidably installed on the valve cover, the static iron core is installed on the valve seat and located in the valve cover, and the movable iron core is installed on the valve cover. The movable iron core is installed at the bottom end of the valve rod and located in the valve cover. The safety gas control valve has the beneficial effects that by arranging the buckle assembly and the driving device, when the control valve is closed, the movable iron core can be locked in the valve cover under the action of the buckle assembly, so that the situation that the valve clack is pushed to cause gas leakage is avoided, and the use safety of the safety gas control valve is improved; on the other hand, if the control valve is closed subsequently, it is assumed that the reset spring breaks down, namely the movable iron core loses the support of the elastic force, the situation of air leakage caused by movement of the movable iron core does not need to be worried about.

Description

Technical Field

[0001] The present application relates to the technical field of gas valves, and in particular to a safety gas control valve. Background Art

[0002] Gas solenoid valve, also known as gas emergency shut-off valve, is an actuator that is suitable for two-position on-off switching and automatic temperature control of pipelines with various gases such as city gas, liquefied petroleum gas, and natural gas as heating and combustion media. It is widely used in gas heat setting in the textile and printing industries, kiln heating in the glass and light bulb industries, and gas heating automatic control systems in other industries.

[0003] The closure of the valve body of the existing gas solenoid valve is generally driven by a return spring, that is, the return spring is used to keep the valve body closed. This has the following disadvantages: if the gas pressure inside the pipeline suddenly increases, the gas may force the valve disc to be pushed, thereby posing the risk of leakage; on the other hand, since the closure of the valve body is only through the elastic force of the return spring, the service life of the return spring is also reduced. Therefore, a safety gas control valve is proposed to solve the above technical problems. Summary of the invention

[0004] One of the purposes of the present application is to provide a safe gas control valve.

[0005] In order to achieve the above objectives, the technical solution adopted in the present application is: a safe gas control valve, including a valve seat, a valve cover, a valve stem, a static iron core, a moving iron core, a snap assembly and a driving device, wherein the valve cover is installed on the top of the valve seat, the valve stem is vertically elastically slidably installed on the valve cover, the static iron core is installed on the valve seat and is located in the valve cover, and the moving iron core is installed on the bottom end of the valve stem and is located in the valve cover; the snap assembly is installed in the moving iron core and cooperates with the valve cover, and the driving device is installed in the moving iron core and is connected and cooperated with the snap assembly; after the control valve is closed, the moving iron core is suitable for being locked in the valve cover under the action of the snap assembly; when the control valve is opened, the driving device is suitable for driving the snap assembly to release the lock of the moving iron core under the action of the magnetic force of the static iron core.

[0006] Preferably, the interior of the valve cover is divided into an upper chamber and a lower chamber, the diameter of the upper chamber is smaller than the diameter of the lower chamber, and a card slot is provided in the upper chamber; the buckle assembly includes a card block, and the card block is horizontally elastically slidably installed in the moving iron core, the first end of the card block is connected to the driving device, and a wedge surface is provided at the second end of the card block; when the control valve is closed, the card block is suitable for two processes, wherein the first process: the wedge surface of the card block is squeezed and matched with the upper chamber to make the card block move and retract into the moving iron core; the second process: the card block corresponds to the card slot and the card block is suitable for matching with the card slot under the action of elastic force, thereby realizing the locking of the moving iron core.

[0007] Preferably, the driving device includes an iron core member and a connecting rod, the iron core member is vertically slidably installed on the bottom end of the moving iron core, the first end of the connecting rod is hinged to the first end of the blocking block, and the second end of the connecting rod is hinged to the iron core member; when the control valve is opened, the iron core member is suitable for moving downward under the magnetic force of the static iron core, and then through the action of the connecting rod to pull the blocking block to move until it is disengaged from the slot, so as to unlock the moving iron core.

[0008] Preferably, an inclined guide groove is provided at the second end of the blocking block, and the driving device includes an iron core member and an inclined guide column, the iron core member is vertically slidably installed at the bottom end of the moving iron core, and the inclined guide column is installed on the iron core member and cooperates with the inclined guide groove; when the control valve is opened, the iron core member is suitable for moving downward under the magnetic force of the static iron core, and then the blocking block is driven to move through the inclined sliding cooperation between the inclined guide column and the inclined guide groove until it is disengaged from the blocking groove, so as to realize the unlocking of the moving iron core.

[0009] Preferably, the driving device includes an iron core member, a sleeve and a transmission assembly, the iron core member is vertically slidably installed at the bottom end of the moving iron core, the sleeve is rotatably installed in the moving iron core and sleeved on the outside of the iron core member, and the sleeve and the iron core member are matched through a guide structure, and the iron core member is connected and matched with the first end of the block through the transmission assembly; when the control valve is opened, the iron core member is suitable for moving downward under the magnetic force of the static iron core, and then driving the sleeve to rotate through the guide structure, and the sleeve is suitable for driving the block to move through the transmission assembly until it disengages from the slot, so as to unlock the moving iron core.

[0010] Preferably, the guide structure includes a guide block and a guide groove, the guide block is arranged outside the core member, and the guide groove is spirally arranged in the sleeve; the core member is suitable for driving the sleeve to rotate through the sliding cooperation between the guide groove and the guide block.

[0011] Preferably, the transmission assembly includes a transmission rod, a first end of the transmission rod is hinged to the first end of the block, and a second end of the transmission rod is hinged to the sleeve; when the control valve is opened, the sleeve is suitable for pulling the block to move through the transmission rod.

[0012] Preferably, the transmission assembly includes a transmission disc and a transmission roller, the transmission disc is sleeved and installed on the sleeve and is provided with an inclined groove on the outside, and the transmission roller is installed on the first end of the block; when the control valve is opened, the sleeve is suitable for driving the transmission disc to rotate, and then pulling the block to move through the cooperation of the inclined groove and the transmission roller.

[0013] Preferably, a wear-resistant block is provided at the second end of the clamping block, and filtering cooperation is achieved between the upper cavity and the lower cavity through a chamfered structure.

[0014] Preferably, a clutch block is vertically elastically slidably installed in the moving iron core; when the control valve is opened, the block is suitable for moving and passing over the clutch block; then, the clutch block is suitable for resetting under the action of elastic force and abutting against the side of the block to achieve locking of the block after movement and retraction; when the control valve is closed, the push rod on the clutch block is suitable for abutting against the inner top end of the valve cover, thereby causing the clutch block to move downward and away from the block to achieve unlocking of the block.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The present invention is provided with a snap assembly and a driving device. When the control valve is closed, the moving iron core can be locked in the valve cover under the action of the snap assembly. Therefore, the valve disc will not be pushed to cause air leakage, thereby improving the safety of the use of the safety gas control valve. Of course, on the other hand, if after the control valve is subsequently closed, if the return spring fails, that is, the moving iron core loses its elastic support, there is no need to worry about the movement of the moving iron core causing air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the split structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the cooperation between the moving iron core and the valve cover of the present invention.

[0020] Figure 4 It is a schematic diagram of a first embodiment of the driving device of the present invention.

[0021] Figure 5This is a schematic diagram of a second embodiment of the driving device of the present invention.

[0022] Figure 6 The figure is a schematic diagram of the working principle of the driving device embodiment 1 of the present invention.

[0023] Figure 7 This is a schematic diagram of Embodiment 3 of the driving device of the present invention.

[0024] Figure 8 Schematic diagram of the fourth embodiment of the driving device of the present invention.

[0025] Fig. 9 It is a schematic diagram of the internal structure of the valve cover of the present invention.

[0026] Fig.10 It is a schematic diagram of the guiding structure of the present invention.

[0027] Fig.11 It is a specific schematic diagram of the guide structure of the present invention.

[0028] Fig.12 It is a schematic diagram of the card block structure of the present invention.

[0029] Fig.13 It is a schematic diagram of the clutch block structure of the present invention.

[0030] Fig.14 It is a schematic diagram of the principle of the clutch block and the clamping block of the present invention when they cooperate.

[0031] In the figure: 1. valve seat; 2. valve cover; 3. valve stem; 4. static iron core; 5. moving iron core; 6. snap assembly; 601. clamping block; 7. upper chamber; 8. lower chamber; 9. driving device; 901. core piece; 902. sleeve; 903. transmission assembly; 9031. transmission rod; 9032. transmission plate; 9033. inclined groove; 9034. transmission roller; 904. connecting rod; 905. inclined guide column; 906. inclined guide groove; 10. clamping groove; 11. guide structure; 1101. guide block; 1102. guide groove; 12. wear-resistant block; 13. clutch block; 14. push rod. DETAILED DESCRIPTION

[0032] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0033] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0034] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0035] One of the preferred embodiments of the present application is as follows: Figures 1 to 14 As shown, a safety gas control valve includes a valve seat 1, a valve cover 2, a valve stem 3, a static iron core 4, a moving iron core 5, a snap-on assembly 6 and a driving device 9, wherein the valve cover 2 is installed at the top of the valve seat 1, and the valve stem 3 is vertically elastically slidably installed at the top position of the valve cover 2 through a return spring. Of course, the valve stem 3 is connected to the valve disc of the control valve (not shown), the static iron core 4 is installed on the valve seat 1 and is located in the valve cover 2, the moving iron core 5 is installed at the bottom end of the valve stem 3 and is located in the valve cover 2; the snap-on assembly 6 is installed in the moving iron core 5 and cooperates with the valve cover 2, and the driving device 9 is installed in the moving iron core 5 and is connected and cooperated with the snap-on assembly 6.

[0036] It is understandable that when the control valve is closed, that is, the static iron core 4 loses power and loses its magnetic attraction to the moving iron core 5, the moving iron core 5 will move up under the action of the reset spring, and then the moving iron core 5 can be locked in the valve cover 2 under the action of the buckle assembly 6. It can be seen that when there is a large pressure in the gas pipeline, since the moving iron core 5 is locked, the valve disc will not be pushed and cause air leakage, thereby improving the safety of the use of the safety gas control valve. Of course, on the other hand, if the reset spring fails after the subsequent control valve is closed, that is, the moving iron core 5 loses its elastic support, there is no need to worry about the movement of the moving iron core 5 causing air leakage.

[0037] When the control valve is opened, that is, the static iron core 4 is energized to generate magnetic force, the driving device 9 will drive the buckle assembly 6 to release the lock on the moving iron core 5 under the action of the magnetic force, and then the moving iron core 5 will move downward under the continued action of the magnetic force, thereby driving the valve stem 3 to move downward and open the control valve.

[0038] As a further description of the above embodiment: Figure 3 and Fig. 9As shown, the interior of the valve housing 2 is divided into an upper chamber 7 and a lower chamber 8. The diameter of the upper chamber 7 is smaller than that of the lower chamber 8, that is, the lower chamber 8 is thicker than the upper chamber 7. A clamping groove 10 is provided at the inner side of the upper chamber 7. The buckle assembly 6 includes a clamping block 601, which is horizontally elastically slidably mounted inside the moving iron core 5 through an elastic member. The first end of the clamping block 601 is connected to the driving device 9, and a wedge-shaped surface is provided at the second end of the clamping block 601.

[0039] It is understandable that when the control valve is closed, that is, when the moving iron core 5 moves upward and resets under the action of elastic force, the block 601 will also move upward, and at this time the block 601 will go through two processes, wherein the first process: Figure 3 As shown in (a), in the initial state, the block 601 is extended out of the side of the moving iron core 5 under the action of the elastic force. Of course, the lower chamber 8 will also provide sufficient avoidance space for the extension of the block 601. When the block 601 enters the upper chamber 7 from the lower chamber 8, the wedge-shaped surface of the block 601 will be squeezed with the upper chamber 7. Under the cooperation of the squeezing force and the wedge-shaped surface, the block 601 will be squeezed and moved until it retracts into the moving iron core 5. The second process: As the block 601 continues to move upward, when the block 601 corresponds to the slot 10, the block 601 will be inserted into the slot 10 under the elastic force of the elastic member, thereby realizing the locking process of the moving iron core 5.

[0040] It should be noted that the elastic member can be a spring or a tension spring. The number of the clamping blocks 601 is preferably multiple and evenly distributed, so as to improve the stability and balance during the limit. Of course, the specific number can be set by those skilled in the art according to the actual situation, and three groups are used in this application and are evenly distributed, so the following embodiments are also described by taking three groups as an example.

[0041] The structures of the driving device 9 in the present application include various types, including but not limited to the following three types:

[0042] Structure 1: Figure 7 As shown, the driving device 9 includes an iron core member 901 and (three groups of) connecting rods 904. The iron core member 901 is vertically slidably installed at the bottom end of the moving iron core 5. The first end of the connecting rod 904 is hinged to the first end of the block 601, and the second end of the connecting rod 904 is hinged to the iron core member 901.

[0043] It can be understood that when the control valve is opened, since the moving iron core 5 is locked by the block 601, the iron core piece 901 will move downward under the action of the magnetic force, and then the iron core piece 901 will pull the three groups of blocks 601 to move toward the middle of the moving iron core 5 through the connecting rod 904 until they are disengaged from the slot 10, thereby releasing the lock on the moving iron core 5. At this time, the moving iron core 5 will move downward under the continued action of the magnetic force and cause the valve to open.

[0044] Structure 2: Figure 8 As shown, an inclined guide groove 906 is provided at the second end of the clamping block 601 , and the driving device 9 includes an iron core piece 901 and an inclined guide column 905 , the iron core piece 901 is vertically slidably installed at the bottom end of the moving iron core 5 , and the inclined guide column 905 is installed on the iron core piece 901 and cooperates with the inclined guide groove 906 .

[0045] It can be understood that when the control valve is opened, since the moving iron core 5 is locked by the block 601, the iron core piece 901 will move downward under the action of the magnetic force. At this time, the inclined guide column 905 will act on the inclined guide groove 906, and then the inclined sliding cooperation of the two will drive the block 601 to move, that is, the three groups of blocks 601 move toward the middle of the moving iron core 5 and until they are disengaged from the groove 10. At this time, the moving iron core 5 will move downward under the continued action of the magnetic force and cause the valve to open.

[0046] Structure 3: Figures 4 to 6 As shown, the driving device 9 includes a core piece 901, a sleeve 902 and a transmission assembly 903. The core piece 901 is vertically slidably installed at the bottom end of the moving iron core 5. The sleeve 902 is rotatably installed in the moving iron core 5 and sleeved on the outside of the core piece 901. The sleeve 902 and the core piece 901 are matched through a guide structure 11. The core piece 901 is connected and matched with the first end of the block 601 through the transmission assembly 903.

[0047] It can be understood that when the control valve is opened, since the moving iron core 5 is locked by the block 601, the iron core piece 901 will move downward under the action of the magnetic force, and the downward moving iron core piece 901 will drive the sleeve 902 to rotate through the guide structure 11, and the sleeve 902 can drive the block 601 to move through the transmission assembly 903, that is, the three groups of blocks 601 move toward the middle of the moving iron core 5 and until they are disengaged from the slot 10. At this time, the moving iron core 5 will move downward under the continued action of the magnetic force and cause the valve to open.

[0048] As a further description of the above embodiment: Fig.11 As shown, the guide structure 11 includes a guide block 1101 and a guide groove 1102, wherein the guide block 1101 is disposed outside the core member 901, and the guide groove 1102 is disposed inside the sleeve 902, and the guide groove 1102 is a spiral structure. It can be understood that when the core member 901 drives the guide block 1101 to move downward, the sleeve 902 can be rotated under the sliding cooperation between the guide block 1101 and the guide groove 1102.

[0049] Of course, the present application does not specifically limit the structure of the transmission assembly 903, and two implementation modes are provided below for reference:

[0050] Method 1: If Figure 6 As shown, the transmission assembly 903 includes a transmission rod 9031, a first end of the transmission rod 9031 is hinged to the first end of the block 601, and a second end of the transmission rod 9031 is hinged to the sleeve 902. It can be understood that when the control valve is opened, the sleeve 902 rotates clockwise under the action of the guide structure 11, and the sleeve 902 can pull the block 601 to move under the traction action of the transmission rod 9031.

[0051] Method 2: If Figure 5 As shown, the transmission assembly 903 includes a transmission disc 9032 and a transmission roller 9034. The transmission disc 9032 is sleeved and installed on the sleeve 902, and an inclined groove 9033 is provided on the outside of the transmission disc 9032. The transmission roller 9034 is installed at the first end of the clamping block 601, and the transmission roller 9034 and the inclined groove 9033 are rollingly matched. It can be understood that when the control valve is opened, the sleeve 902 will rotate under the action of the guide structure 11, and the sleeve 902 drives the rotation of the transmission disc 9032, so the inclined groove 9033 will rotate, and then the transmission roller 9034 will move relatively along the inclined groove 9033, that is, the movement of the clamping block 601.

[0052] It should be noted that when using structure 1 and structure 2, it can be regarded as directly driving the movement of the block 601 by the downward movement of the core piece 901, so it is necessary to consider that there is enough installation and avoidance space in the vertical direction of the moving iron core 5. When using structure 3 (which can also be divided into two structural embodiments), the structure mainly drives the sleeve 902 to rotate by the downward movement of the core piece 901, and pulls the movement of the block 601 through the sleeve 902, so it can be regarded as a multi-stage transmission to achieve the movement of the block 601, so that the stroke of the block 601 can be enlarged by an adapted transmission ratio, that is, when the core piece 901 moves down a small distance, the block 601 can be moved over a large distance, so it is mainly necessary to consider that there is enough installation and avoidance space in the horizontal direction of the moving iron core 5. It can be seen that when using structure 3, the volume of the moving iron core 5 can be set smaller, that is, the space occupied in the up and down directions is smaller; but all three structures can meet actual needs, and technicians in this field can choose according to actual conditions.

[0053] In one of the embodiments of the present application, Fig. 9 and Fig.12 As shown, in order to reduce the friction force of the block 601 when it cooperates with the upper cavity 7 and to increase the service life of the block 601, a wear-resistant block 12 can be provided at the second end position of the block 601, and the upper cavity 7 and the lower cavity 8 can be filtered and matched through a chamfered structure to facilitate the wear-resistant block 12 to better slide and fit in the upper cavity 7.

[0054] On the other hand, when the block 601 is locking the moving iron core 5, it can also play the following role: as we know, the moving iron core 5 will be instantly reset under the action of the reset spring, and thus will have an impact on the valve cover 2, and when the block 601 moves upward to contact the valve cover 2 (i.e., the upper chamber 7), the block 601 will compress the elastic part, i.e., the elastic part will play a buffering role, thereby reducing the impact force of the moving iron core 5 on the valve cover 2, and further improving the service life of the solenoid valve.

[0055] Based on the above embodiments, one of the embodiments of the present application is as follows: Fig.13 and Fig.14 As shown, although the block 601 can play a buffering role, it will also bring certain resistance and friction, and the design of the wear-resistant block 12 and the chamfered structure will increase the cost and affect the closing speed of the valve. Therefore, a clutch block 13 can be installed in the moving iron core 5 through a spring vertical elastic sliding, and a push rod 14 is installed on the clutch block 13.

[0056] It can be understood that when the control valve is opened, that is, when the block 601 retracts under the action of the magnetic force, the block 601 can move until it passes over the clutch block 13, and as the moving iron core 5 moves downward, that is, when the push rod 14 is separated from the valve cover 2, the clutch block 13 will be reset under the action of the elastic force and abut against the side position of the block 601 (such as Fig.14 As shown), the retracted block 601 can be locked, so that when the valve is closed next time, the block 601 will not be squeezed and rubbed against the valve cover 2, thereby improving the closing response speed.

[0057] Of course, in order to achieve a locking effect when the valve is closed, when the block 601 moves up to almost correspond to the slot 10, the push rod 14 will abut against the inner top of the valve cover 2 (the spring is compressed at this time), so that the clutch block 13 will move down under the extrusion force until it is away from the block 601, thereby releasing the lock on the block 601, so that the block 601 will move under the action of elastic force and cooperate with the slot 10 to lock the moving iron core 5. It should be known that the clutch block 13 can also buffer the impact force of resetting under the action of elastic force. Although the clutch block 13 also has a certain resistance effect, this resistance is much smaller than the friction resistance between the block 601 and the valve cover 2. Therefore, overall, while buffering and reducing resistance, it will hardly affect the closing speed of the valve.

[0058] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A safety gas control valve, comprising: A valve seat, a valve cover, a valve stem, a static iron core, a moving iron core, a buckle assembly and a driving device, wherein the valve cover is mounted on the top of the valve seat, the valve stem is vertically elastically slidably mounted on the valve cover, the static iron core is mounted on the valve seat and located in the valve cover, and the moving iron core is mounted on the bottom of the valve stem and located in the valve cover; characterized in that: the buckle assembly is mounted in the moving iron core and cooperates with the valve cover, and the driving device is mounted in the moving iron core and connected and cooperates with the buckle assembly; After the control valve is closed, the moving iron core is suitable for being locked in the valve cover under the action of the buckle assembly; when the control valve is opened, the driving device is suitable for driving the buckle assembly to release the lock on the moving iron core under the action of the magnetic force of the static iron core.

2. The safety gas control valve according to claim 1, characterized in that: The interior of the valve housing is divided into an upper chamber and a lower chamber, the diameter of the upper chamber is smaller than the diameter of the lower chamber, and a clamping groove is provided in the upper chamber; the buckle assembly includes a clamping block, the clamping block is horizontally elastically slidably installed in the moving iron core, the first end of the clamping block is connected to the driving device, and a wedge-shaped surface is provided at the second end of the clamping block; When the control valve is closed, the block is suitable for two processes, wherein in the first process: the wedge surface of the block is squeezed and matched with the upper cavity so that the block moves and retracts into the moving iron core; and in the second process: the block corresponds to the slot and the block is suitable for matching with the slot under the action of elastic force, thereby achieving locking of the moving iron core.

3. The safety gas control valve according to claim 2, characterized in that: The driving device comprises an iron core member and a connecting rod, wherein the iron core member is vertically slidably mounted on the bottom end of the moving iron core, the first end of the connecting rod is hinged to the first end of the clamping block, and the second end of the connecting rod is hinged to the iron core member; When the control valve is opened, the iron core piece is suitable for moving downward under the magnetic force of the static iron core, and then the connecting rod is used to pull the clamping block to move until it is disengaged from the clamping slot, so as to unlock the moving iron core.

4. The safety gas control valve according to claim 2, characterized in that: The second end of the clamping block is provided with an oblique guide groove, the driving device comprises an iron core member and an oblique guide column, the iron core member is vertically slidably mounted on the bottom end of the moving iron core, the oblique guide column is mounted on the iron core member and cooperates with the oblique guide groove; When the control valve is opened, the iron core piece is suitable for moving downward under the magnetic force of the static iron core, and then the inclined guide column and the inclined guide groove are cooperated to drive the block to move until it is disengaged from the slot, so as to unlock the moving iron core.

5. The safety gas control valve according to claim 2, characterized in that: The driving device comprises an iron core member, a sleeve and a transmission assembly, wherein the iron core member is vertically slidably mounted at the bottom end of the moving iron core, the sleeve is rotatably mounted in the moving iron core and sleeved on the outside of the iron core member, and the sleeve and the iron core member are matched through a guide structure, and the iron core member is connected and matched with the first end of the clamping block through the transmission assembly; When the control valve is opened, the iron core piece is suitable for moving downward under the magnetic force of the static iron core, and then driving the sleeve to rotate through the guide structure. The sleeve is suitable for driving the block to move through the transmission assembly until it disengages from the slot, so as to unlock the moving iron core.

6. The safety gas control valve according to claim 5, characterized in that: The guide structure includes a guide block and a guide groove, wherein the guide block is arranged outside the core member, and the guide groove is spirally arranged in the sleeve; the core member is suitable for driving the sleeve to rotate through the sliding cooperation between the guide groove and the guide block.

7. The safety gas control valve according to claim 5 or 6, characterized in that: The transmission assembly comprises a transmission rod, a first end of which is hinged to a first end of the block, and a second end of which is hinged to the sleeve; when the control valve is opened, the sleeve is adapted to move the block by pulling the transmission rod.

8. The safety gas control valve according to claim 5 or 6, characterized in that: The transmission assembly includes a transmission disc and a transmission roller. The transmission disc is sleeved and installed on the sleeve and is provided with an inclined groove on the outside. The transmission roller is installed on the first end of the block. When the control valve is opened, the sleeve is suitable for driving the transmission disc to rotate, and then pulling the block to move through the cooperation of the inclined groove and the transmission roller.

9. The safety gas control valve according to claim 2, characterized in that: A wear-resistant block is arranged at the second end of the clamping block, and filtering cooperation is achieved between the upper cavity and the lower cavity through a chamfered structure.

10. The safety gas control valve according to claim 2, characterized in that: A clutch block is vertically elastically slidably installed in the moving iron core; when the control valve is opened, the clamping block is suitable for moving and passing over the clutch block; then, the clutch block is suitable for resetting under the action of elastic force and abutting against the side of the clamping block to achieve locking of the clamping block after movement and retraction; When the control valve is closed, the push rod on the clutch block is adapted to abut against the inner top end of the valve cover, thereby causing the clutch block to move downward and away from the clamping block, so as to unlock the clamping block.

Images