Linkage on-off valve

Abstract

The utility model discloses a linkage on-off valve which comprises a valve body, a magnetic linkage part and a magnetic driving part. The valve body comprises a valve body and a valve element, the valve body is provided with an air inlet channel, an air outlet channel and a valve cavity, the valve element is arranged in the valve cavity and has a valve opening position and a valve closing position, and the air inlet channel and the air outlet channel are communicated with each other at the valve opening position; in the valve closing position, the valve element disconnects the air inlet channel and the air outlet channel. The magnetic linkage part is arranged on the valve element and can drive the valve element to switch the valve opening position and the valve closing position when acting. The magnetic driving part is used for being in linkage with the magnetic linkage part, the magnetic driving part and the magnetic linkage part are matched with each other through a magnetic field, and when the magnetic driving part acts, the magnetic linkage part changes the position through the magnetic field so that the valve element can switch the position. According to the linkage on-off valve, on-off of the valve is controlled in a magnetic linkage mode, and pure mechanical control over the valve can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve field especially relates to a linkage on-off valve. BACKGROUND

[0002] Valve is a kind of fluid control device, for controlling the flow of fluid.In automation control occasion, it is often needed to detect the displacement variation of outside, such as water level rise and fall, the position change of movable component or some human operation etc., and need to control the on-off of valve according to the displacement variation of outside, to realize the flow control of fluid.In prior art, the automation control described above is usually realized by using sensor that can generate electric signal and cooperating with electric valve: the displacement variation of outside triggers sensor, and sensor provides electric signal to control and drive electric valve to open or close.The structure described above, since using electric control mode, needs to be matched with control circuit and electric valve to use, and electrical system is complex, cost is higher, for some pure mechanical occasions, such as some gas steam furnace, gas barbecue grill or gas stove etc., the cost of electronic upgrading and subsequent use cost is relatively high;In addition, since needing to use sensor that can generate electric signal and using with control circuit, and valve also needs to use electric valve structure, for some occasions that strictly require explosion-proof, it is difficult to meet the requirements. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this purpose, the utility model provides a linkage on-off valve, the on-off of valve is controlled by magnetic linkage mode, and pure mechanical control for valve can be realized.

[0004] The linkage on-off valve according to the utility model embodiment, it includes: valve body, including valve body and valve core, the valve body is provided with inlet passage, outlet passage and valve cavity, and valve core is arranged in the valve cavity, and the valve core has open valve position and closed valve position: in the open valve position, the inlet passage and the outlet passage are interconnected;In the closed valve position, the valve core disconnects the intercommunication between the inlet passage and the outlet passage;Magnetic linkage part is arranged in the valve core, and the magnetic linkage part can drive the valve core to switch the open valve position and the closed valve position when acting;Magnetic drive part is used to link with the magnetic linkage part, and the magnetic drive part and the magnetic linkage part are matched with each other by magnetic field, and the magnetic drive part makes the magnetic linkage part change position by the magnetic field when acting, to make the valve core switch position.

[0005] The linkage on-off valve has the following beneficial effects: the magnetic driving part can be installed on a part that generates displacement outside, and the valve body is installed correspondingly; the displacement outside drives the magnetic driving part to move, so that the magnetic driving part changes position, and the magnetic driving part with the changed position can drive the valve core provided with the magnetic linkage part to change position, thereby realizing on-off control of the valve.

[0006] According to some embodiments of the utility model, the air inlet channel and the air outlet channel are communicated through the valve cavity, the cavity wall of the valve cavity is provided with a communication port for enabling the air inlet channel and the air outlet channel to communicate, and the valve core is provided with a blocking plug for respectively opening and blocking the communication port when the valve core changes the open valve position and the closed valve position.

[0007] According to some embodiments of the utility model, a reset elastic member is arranged between the valve core and the valve body, and the valve core has a tendency to be kept in the open valve position or the closed valve position through the reset elastic member.

[0008] According to some embodiments of the utility model, the valve core comprises a core shaft member, the blocking plug is elastic and sleeved on the core shaft member, a cylindrical balance elastic member is arranged between the core shaft member and the blocking plug, the balance elastic member is sleeved on the core shaft member and used for applying elastic force to the blocking plug, one side of the blocking plug is provided with a support plate, the support plate is sleeved on the core shaft member, the support plate is attached to the blocking plug, and the balance elastic member is arranged between the support plate and the core shaft member.

[0009] According to some embodiments of the utility model, one side of the support plate is provided with a middle sunken groove and forms a middle convex platform on the other side, the side of the blocking plug close to the support plate is provided with a convex platform matched with the middle sunken groove, the convex platform is inserted into the middle sunken groove, one end of the balance elastic member is sleeved on the middle convex platform and abuts against the support plate, and the other end of the balance elastic member abuts against the core shaft member.

[0010] According to some embodiments of the utility model, the valve core includes a core shaft piece, the core shaft piece includes a mounting disc and a connecting shaft, one end of the connecting shaft is connected with the center of the mounting disc, the magnetic linkage part is fixed on the mounting disc, the blocking plug is arranged on the connecting shaft, the cavity wall of the valve cavity is provided with a communication hole, the communication port is the orifice of the communication hole, the blocking plug is arranged opposite to the communication port, the hole bottom of the communication hole is provided with a connecting hole, the mounting disc is slidably connected with the valve cavity along the axial direction of the connecting shaft, the other end of the connecting shaft is slidably connected with the connecting hole along the axial direction of the connecting shaft.

[0011] According to some embodiments of the utility model, the valve body includes a main seat body and a cover piece, the air inlet channel, the air outlet channel, the communication hole and the connecting hole are arranged on the main seat body, the main seat body is provided with a cavity groove, the communication hole is arranged on the groove bottom of the cavity groove, the cover piece is installed on the main seat body and covers the slot opening of the cavity groove, the cover piece and the cavity groove form the valve cavity.

[0012] According to some embodiments of the utility model, the main seat body is provided with a plug-in boss around the slot opening of the cavity groove, the cover piece is provided with a matching recess groove matched with the plug-in boss, the cover piece is plug-in matched through the matching recess groove and the plug-in boss, a first sealing ring is clamped between the cover piece and the main seat body, the first sealing ring abuts at the position of the cover piece around the slot opening of the matching recess groove and the position of the main seat body around the plug-in boss.

[0013] According to some embodiments of the utility model, the magnetic driving part is installed on the connecting part, the connecting part is connected with a mounting cover, the peripheral edge of the mounting cover is fixed on the connecting part, the mounting cover covers and fixes the magnetic driving part on the connecting part and closes the magnetic driving part together with the connecting part;The connecting part is provided with a top pressing boss, the mounting cover covers the top pressing boss, the top pressing boss abuts with the magnetic driving part, the outer periphery of the top pressing boss is sleeved with a second sealing ring, the second sealing ring is located in the mounting cover, and the second sealing ring abuts with the connecting part, the magnetic driving part and the mounting cover.

[0014] According to some embodiments of the utility model, the linkage on-off valve is used for controlling the gas valve assembly, the gas valve assembly includes gas valve body and permanent fire assembly, the gas valve body is provided with flameout protection solenoid valve and permanent fire gas output end, permanent fire assembly includes permanent fire burner and thermocouple, the permanent fire burner is connected to the permanent fire gas output end through permanent fire gas pipeline, the thermocouple is used for detecting the flame of the permanent fire burner, the thermocouple is electrically connected with the flameout protection solenoid valve, the valve body is connected in series in the permanent fire gas pipeline through the air inlet channel and the air outlet channel to control the on-off of the permanent fire gas pipeline.

[0015] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0017] Fig. 1 It is cross section structure diagram for valve core of utility model embodiment in open valve position;

[0018] Fig. 2 It is cross section structure diagram for valve core of utility model embodiment in closed valve position;

[0019] Fig. 3 It is structure schematic drawing for utility model embodiment when control gas valve assembly opens;

[0020] Fig. 4 It is structure schematic drawing for utility model embodiment when control gas valve assembly closes.

[0021] REFERENCE NUMERALS:

[0022] Valve body 100, valve body 110, valve core 120, reset elastic part 130, first sealing ring 160, air inlet channel 111, air outlet channel 112, valve cavity 113, communication port 114, communication hole 115, connecting hole 116, main seat body 117, cover member 118, plugging plug 121, core shaft part 122, balance elastic part 123, support plate 124, mounting disc 1221, connecting shaft 1222, plug-in boss 1171, matching recess 1181;

[0023] Magnetic linkage part 200;

[0024] Magnetic drive part 300;

[0025] Connecting part 400, top pressure boss 410;

[0026] Mounting cover 500

[0027] Second sealing ring 600

[0028] Gas valve body 700, flameout protection solenoid valve 710, pilot gas output end 720, gas input end 730, main gas output end 740

[0029] Pilot assembly 800, pilot burner 810, thermocouple 820

[0030] Main burner 900 DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0032] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0033] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0034] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0035] Referring to Figs. 1 to 4The application discloses a linkage on-off valve, which comprises a valve body 100, a magnetic linkage part 200 and a magnetic driving part 300. The valve body 100 comprises a valve body 110 and a valve core 120, the valve body 110 is provided with an air inlet channel 111, an air outlet channel 112 and a valve cavity 113, the valve core 120 is arranged in the valve cavity 113, and the valve core 120 has an open valve position and a closed valve position; in the open valve position, the air inlet channel 111 and the air outlet channel 112 are communicated with each other; in the closed valve position, the valve core 120 disconnects the communication between the air inlet channel 111 and the air outlet channel 112. The magnetic linkage part 200 is arranged on the valve core 120, and the magnetic linkage part 200 can drive the valve core 120 to switch the open valve position and the closed valve position when the magnetic linkage part 200 is actuated. The magnetic driving part 300 is used for linkage with the magnetic linkage part 200, the magnetic driving part 300 and the magnetic linkage part 200 are matched with each other through a magnetic field, and the magnetic driving part 300 drives the magnetic linkage part 200 to change the position through the magnetic field when the magnetic driving part 300 is actuated, so that the valve core 120 switches the position.

[0036] In use, the magnetic driving part 300 can be arranged on an external displacement component, and the valve body 100 is arranged corresponding to the magnetic driving part 300. The external displacement change drives the magnetic driving part 300 to actuate, so that the magnetic driving part 300 changes the position, and the magnetic driving part 300 in the changed position can drive the valve core 120 provided with the magnetic linkage part 200 to switch the position, thereby realizing the on-off control of the valve. The linkage on-off valve has the advantages that the on-off control of the valve adopts the structure of magnetic field linkage, the circuit structure is not needed, the structure of the control system is simplified, the cost of transformation and use is reduced, the pure mechanical control mode can be applied in occasions with high anti-explosion requirement, the magnetic field linkage is a non-contact linkage, so the linkage on-off valve can be applied in occasions where a detection component and an execution component are separated, the application range is wide, and the linkage on-off valve is flexible to use.

[0037] In the embodiment, the magnetic linkage part 200 can be directly and rigidly fixed to the valve core 120, so as to directly drive the valve core 120 to actuate. Of course, in some embodiments, the magnetic linkage part 200 can be indirectly arranged on the valve core 120, and the valve core 120 is indirectly actuated through a linkage mechanism.

[0038] In the embodiment, the air inlet channel 111 and the air outlet channel 112 are communicated through the valve cavity 113, the cavity wall of the valve cavity 113 is provided with a communication port 114 for enabling the air inlet channel 111 and the air outlet channel 112 to be communicated, and the valve core 120 is provided with a plugging plug 121, which is used for respectively opening and plugging the communication port 114 when the valve core 120 changes the open valve position and the closed valve position. The structure is simple and easy to implement.

[0039] It can be imagined that in other embodiments, the valve core 120 is not limited to the structure described above to control the opening and closing of the valve, for example, the valve core 120 is set as a diaphragm, and the communication port 114 is closed and opened by the deformation and reset of the diaphragm.

[0040] In an embodiment, a reset elastic member 130 is arranged between the valve core 120 and the valve body 110, and the valve core 120 has a tendency to be kept in the open valve position through the reset elastic member 130, thereby forming an always open valve. In other embodiments, the valve core 120 can also be kept in the closed valve position through the reset elastic member 130, thereby forming an always closed valve. Through the above structure, the reset elastic member 130 can cooperate with the valve core 120 to make the valve form an always open or always closed structure, thereby meeting the corresponding requirements.

[0041] It can be imagined that in some embodiments, the reset elastic member 130 can not be arranged, for example, for some control tasks, the valve body 100 is driven by the magnetic driving part 300 to change the state once and complete its task, and then the valve core 120 can be reset manually or by other means to make the valve body 100 restore the state before being triggered by the magnetic driving part 300 to enter the next control task.

[0042] In an embodiment, the valve body 100 is an always open valve, and the magnetic driving part 300 and the magnetic linkage part 200 are linked to each other by repulsive magnetic fields. When the magnetic driving part 300 approaches the magnetic linkage part 200, the magnetic driving part 300 repels the magnetic linkage part 200, so that the valve core 120 enters the closed valve position. When the magnetic driving part 300 moves away from the magnetic linkage part 200, the valve core 120 is reset to the open valve position by the reset elastic member 130 and is kept. When the magnetic driving part 300 and the magnetic linkage part 200 are linked to each other by repulsive magnetic fields, both the magnetic driving part 300 and the magnetic linkage part 200 are magnets, and the corresponding side has the same polarity.

[0043] It can be imagined that in other embodiments, the magnetic driving part 300 and the magnetic linkage part 200 can also be linked to each other by attractive magnetic fields. When the magnetic driving part 300 and the magnetic linkage part 200 are linked to each other by attractive magnetic fields, they can both be magnets, and the corresponding side has opposite polarity, or one of them is a magnet, and the other is a metal that can be attracted by a magnet, such as iron, cobalt, nickel or their alloys.

[0044] It can be understood that the valve body 100 adopts an always open or always closed structure, and the magnetic driving part 300 and the magnetic linkage part 200 adopt a magnetic cooperation of mutual attraction or mutual repulsion, which can be arbitrarily combined as needed, and will not be described in detail here.

[0045] In the embodiment, the valve core 120 comprises a core shaft 122, the blocking plug 121 is elastic and sleeved on the core shaft 122, and a cylindrical balance elastic member 123 is arranged between the core shaft 122 and the blocking plug 121, the balance elastic member 123 is sleeved on the core shaft 122 and used for applying elastic force to the blocking plug 121. With the above structure, when the blocking plug 121 presses the blocking communication port 114, the posture of the blocking plug 121 can be automatically adjusted by the balance elastic member 123, so that the blocking plug 121 can more stably and accurately block the communication port 114.

[0046] In the embodiment, one side of the blocking plug 121 is provided with a support plate 124, the support plate 124 is sleeved on the core shaft 122, the support plate 124 is attached to the blocking plug 121, and the balance elastic member 123 is arranged between the support plate 124 and the core shaft 122. With the above structure, the elastic blocking plug 121 can be attached by the support plate 124, the balance elastic member 123 abuts against the support plate 124, and the support plate 124 can provide support for the blocking plug 121 and the balance elastic member 123, so that the two can better cooperate.

[0047] In the embodiment, the reset elastic member 130 and the balance elastic member 123 can be springs, or elastic structures such as rubber bodies, elastic sheet bodies and the like, and can be configured according to actual conditions.

[0048] In the embodiment, one side of the support plate 124 is provided with a middle sunken groove, the other side of the support plate 124 is formed with a middle boss, one side of the blocking plug 121 close to the support plate 124 is provided with a protruding table matched with the middle sunken groove, the protruding table is inserted into the middle sunken groove, one end of the balance elastic member 123 is sleeved on the middle boss and abuts against the support plate 124, and the other end of the balance elastic member 123 abuts against the core shaft 122. With the above structure, the cooperation among the support plate 124, the balance elastic member 123 and the blocking plug 121 is more stable.

[0049] In the embodiment, the core shaft 122 comprises a mounting disc 1221 and a connecting shaft 1222, one end of the connecting shaft 1222 is connected with the center of the mounting disc 1221, the magnetic linkage part 200 is fixed to the mounting disc 1221, the blocking plug 121 is arranged on the connecting shaft 1222, the cavity wall of the valve cavity 113 is provided with a communication hole 115, the communication port 114 is the orifice of the communication hole 115, the blocking plug 121 is arranged opposite to the communication port 114, the hole bottom of the communication hole 115 is provided with a connecting hole 116, the mounting disc 1221 is slidably connected with the valve cavity 113 along the axial direction of the connecting shaft 1222, and the other end of the connecting shaft 1222 is slidably connected with the connecting hole 116 along the axial direction of the connecting shaft 1222. With the above structure, the action of the valve core 120 is stable, the structure for realizing the blocking and opening functions of the blocking plug 121 is simple, and the production, manufacturing and maintenance are easy.

[0050] In the embodiment, the outlet passage 112 is directly communicated to the valve cavity 113, and the communication hole 115 is a section of the inlet passage 111 close to the valve cavity 113, so that the orifice of the communication hole 115, i.e. the communication port 114, can control the communication and disconnection between the inlet passage 111 and the valve cavity 113, thereby controlling the communication and disconnection between the inlet passage 111 and the outlet passage 112. It can be imagined that in other embodiments, the communication port 114 can also be a structure at other positions, for example, a communication port between the outlet passage 112 and the valve cavity 113.

[0051] In the embodiment, the mounting disc 1221 is provided with a mounting groove, and the magnetic linkage part 200 is embedded in the mounting groove. In other embodiments, the magnetic linkage part 200 can also be fixed to the mounting disc 1221 by adhesion, or fixed by screw connection, clamping, or the like.

[0052] In the embodiment, the valve body 110 includes a main seat body 117 and a cover member 118, the inlet passage 111, the outlet passage 112, the communication hole 115, and the connecting hole 116 are arranged in the main seat body 117, the main seat body 117 is provided with a cavity groove, the communication hole 115 is arranged in the groove bottom of the cavity groove, the cover member 118 is mounted to the main seat body 117 and covers the groove opening of the cavity groove, and the cover member 118 and the cavity groove enclose to form the valve cavity 113. With the above structure, when assembling, the valve core 120 and the reset elastic member 130 can be directly loaded into the main seat body 117 through the groove opening of the cavity groove, and then the cover member 118 is mounted to complete the assembly, which is convenient for assembly.

[0053] In the embodiment, the main seat body 117 is provided with a plug-in boss 1171 around the groove opening of the cavity groove, the cover member 118 is provided with a matching sink groove 1181 matched with the plug-in boss 1171, the cover member 118 is plug-in matched with the plug-in boss 1171 through the matching sink groove 1181, and the first sealing ring 160 is clamped between the cover member 118 and the main seat body 117, and abuts against the cover member 118 around the groove opening of the matching sink groove 1181 and the main seat body 117 around the plug-in boss 1171. With the above structure, a stable seal can be formed between the cover member 118 and the main seat body 117, and the cooperation between them is stable, and the installation and positioning are accurate. In the embodiment, the cover member 118 and the main seat body 117 can be fixed by screws, or fixed by riveting, welding, clamping, or the like.

[0054] In the embodiment, the magnetic driving part 300 is installed on the connecting part 400, the connecting part 400 is connected with the installation cover 500, the peripheral edge of the installation cover 500 is fixed on the connecting part 400, the installation cover 500 covers and fixes the magnetic driving part 300 on the connecting part 400 and closes the magnetic driving part 300 together with the connecting part 400; by using the above structure, the fixing of the magnetic driving part 300 is stable, and the closed structure is good for the protection of the magnetic driving part 300. In the embodiment, the connecting part 400 is provided with the top pressing boss 410, the installation cover 500 covers the top pressing boss 410, the top pressing boss 410 abuts against the magnetic driving part 300, the outer periphery of the top pressing boss 410 is sleeved with the second sealing ring 600, the second sealing ring 600 is located in the installation cover 500, and the second sealing ring 600 abuts against the connecting part 400, the magnetic driving part 300 and the installation cover 500. By using the above structure, the fixing of the magnetic driving part 300 is more stable, and the sealing is better. In the embodiment, the installation cover 500 and the connecting part 400 can be fixed by screws, or fixed by riveting, welding, clamping and the like.

[0055] In the embodiment, as an example, the linkage on-off valve is used for controlling a gas valve assembly, the gas valve assembly includes a gas valve body 700 and a permanent fire assembly 800, the gas valve body 700 is provided with a flameout protection electromagnetic valve 710 and a permanent fire gas output end 720, the permanent fire assembly 800 includes a permanent fire burner 810 and a thermocouple 820, the permanent fire burner 810 is connected to the permanent fire gas output end 720 through a permanent fire gas pipeline, the thermocouple 820 is used for detecting the flame of the permanent fire burner 810, the thermocouple 820 is electrically connected with the flameout protection electromagnetic valve 710, and the valve body 100 is connected in series with the permanent fire gas pipeline through the gas inlet channel 111 and the gas outlet channel 112 to control the on-off of the permanent fire gas pipeline. In the embodiment, the gas valve body 700 can be some gas plug valves, gas butterfly valves or gas flow valves and the like, and the gas valve body 700 can be used for supplying gas to a main burner 900, and specifically, a gas input end 730 of the gas valve body 700 can be connected with a gas source, and a main gas output end 740 of the gas valve body 700 can be connected with the main burner 900.

[0056] After the magnetic driving part 300 is driven by an external structure to change the position, the magnetic driving part 300 can drive the magnetic linkage part 200 to act, so that the valve core 120 acts, and finally the valve body 100 is connected or disconnected, so that the gas supplied to the long-lasting fire burner 810 can be connected or disconnected, and after the gas supplied to the long-lasting fire burner 810 is disconnected, the flame is extinguished, the thermocouple 820 loses voltage, the flameout protection electromagnetic valve 710 is powered off, and the gas valve body 700 cuts off the gas supply, so that the total gas supply is disconnected, and the main burner 900 is extinguished. The above structure skillfully controls the long-lasting fire gas, and uses the flameout protection electromagnetic valve 710 to cut off the gas supply, so that the structure of the gas valve assembly itself can be fully utilized to realize gas control, the structure is simple, easy to modify the existing gas valve assembly, and because the linkage on-off valve is used to control the relatively small flow of long-lasting fire gas, a large volume is not required, thereby saving space and cost.

[0057] It can be imagined that in other embodiments, the linkage on-off valve can also be used to directly control the on-off of the main gas to realize control of the gas valve assembly.

[0058] In embodiments, when the linkage on-off valve is used for the gas valve assembly, it can be used for water level detection, and can be combined to form a dry burning prevention device, so that it can be applied to some occasions such as gas steam ovens. Specifically, the magnetic driving part 300 can be arranged on the float mechanism, and when the water level changes, the magnetic driving part 300 is driven by the float to change the position to drive the magnetic linkage part 200 to act.

[0059] It can be imagined that the linkage on-off valve is not limited to controlling the flow of gas, and can also be used to control the flow of water, steam, powder, and the like.

[0060] It can be imagined that the linkage on-off valve is not limited to dry burning protection, and can also be applied to occasions such as lifting pot flameout, cooperation with a mechanical timing mechanism to realize flameout, and the like.

[0061] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0062] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A linked on-off valve characterized by comprising: The utility model relates to a valve, comprising: a valve body (100) comprising a valve body (110) and a valve core (120), the valve body (110) is provided with an air inlet channel (111), an air outlet channel (112) and a valve cavity (113), the valve core (120) is arranged in the valve cavity (113), the valve core (120) has an open valve position and a closed valve position: in the open valve position, the air inlet channel (111) and the air outlet channel (112) are communicated with each other, in the closed valve position, the valve core (120) disconnects the communication between the air inlet channel (111) and the air outlet channel (112); a magnetic linkage part (200) arranged in the valve core (120), when the magnetic linkage part (200) operates, it can drive the valve core (120) to switch the open valve position and the closed valve position; a magnetic drive part (300) for linkage with the magnetic linkage part (200), the magnetic drive part (300) and the magnetic linkage part (200) cooperate with each other through a magnetic field, when the magnetic drive part (300) operates, it makes the magnetic linkage part (200) change position through the magnetic field, so that the valve core (120) switches position.

2. The linked on-off valve according to claim 1, characterized in that: The air inlet channel (111) and the air outlet channel (112) are communicated through the valve cavity (113), the cavity wall of the valve cavity (113) is provided with a communication port (114) for enabling the air inlet channel (111) and the air outlet channel (112) to be communicated, the valve core (120) is provided with a blocking plug (121), which is used to open and block the communication port (114) respectively when the valve core (120) changes the open valve position and the closed valve position.

3. The linked on-off valve of claim 2, wherein: A reset elastic member (130) is arranged between the valve core (120) and the valve body (110), the valve core (120) has a tendency to remain in the open valve position or the closed valve position through the reset elastic member (130).

4. The linked on-off valve of claim 2, wherein: The valve core (120) comprises a core shaft member (122), the blocking plug (121) is elastic and sleeved on the core shaft member (122), a cylindrical balance elastic member (123) is arranged between the core shaft member (122) and the blocking plug (121), the balance elastic member (123) is sleeved on the core shaft member (122) and is used to apply elastic force to the blocking plug (121); one side of the blocking plug (121) is provided with a support plate (124), the support plate (124) is sleeved on the core shaft member (122), the support plate (124) and the blocking plug (121) are attached, and the balance elastic member (123) is arranged between the support plate (124) and the core shaft member (122).

5. The linked on-off valve of claim 4, wherein: One side of the support plate (124) is provided with a middle sunken groove and forms a middle boss on the other side, the closing plug (121) is provided with a protruding table matched with the middle sunken groove near one side of the support plate (124), the protruding table is inserted into the middle sunken groove, one end of the balanced elastic piece (123) is sleeved on the middle boss and abuts against the support plate (124), the other end of the balanced elastic piece (123) abuts against the mandrel (122).

6. The linked on-off valve of claim 2, wherein: The valve core (120) comprises a mandrel (122), the mandrel (122) comprises a mounting disc (1221) and a connecting shaft (1222), one end of the connecting shaft (1222) is connected with the center of the mounting disc (1221), the magnetic linkage part (200) is fixed to the mounting disc (1221), the closing plug (121) is arranged on the connecting shaft (1222), the cavity wall of the valve cavity (113) is provided with a communication hole (115), the communication port (114) is the orifice of the communication hole (115), the closing plug (121) is arranged opposite to the communication port (114), the bottom of the communication hole (115) is provided with a connecting hole (116), the mounting disc (1221) is slidably matched with the valve cavity (113) along the axial direction of the connecting shaft (1222), the other end of the connecting shaft (1222) is slidably matched with the connecting hole (116) along the axial direction of the connecting shaft (1222).

7. The linked on-off valve of claim 6, wherein: The valve body (110) comprises a main seat body (117) and a cover piece (118), the air inlet channel (111), the air outlet channel (112), the communication hole (115) and the connecting hole (116) are arranged on the main seat body (117), the main seat body (117) is provided with a cavity groove, the communication hole (115) is arranged on the groove bottom of the cavity groove, the cover piece (118) is mounted on the main seat body (117) and covers the slot opening of the cavity groove, and the cover piece (118) and the cavity groove form the valve cavity (113) by being enclosed.

8. The linked on-off valve of claim 7, wherein: The main seat body (117) is provided with a plug-in boss (1171) around the slot opening of the cavity groove, the cover piece (118) is provided with a matching sunken groove (1181) matched with the plug-in boss (1171), the cover piece (118) is plug-in matched through the matching sunken groove (1181) and the plug-in boss (1171), and a first sealing ring (160) is clamped between the cover piece (118) and the main seat body (117). The first sealing ring (160) abuts against the position of the cover piece (118) around the slot opening of the matching sunken groove (1181) and the position of the main seat body (117) around the plug-in boss (1171).

9. The linked on-off valve of claim 1, wherein: The magnetic drive part (300) is mounted on the connecting part (400), the connecting part (400) is connected with the mounting cover (500), the peripheral edge of the mounting cover (500) is fixed on the connecting part (400), the mounting cover (500) covers and fixes the magnetic drive part (300) on the connecting part (400) and closes the magnetic drive part (300) together with the connecting part (400); The connecting part (400) is provided with a top pressing boss (410), the mounting cover (500) covers the top pressing boss (410), the top pressing boss (410) abuts against the magnetic drive part (300), the outer periphery of the top pressing boss (410) is sleeved with a second sealing ring (600), the second sealing ring (600) is located in the mounting cover (500), and the second sealing ring (600) abuts against the connecting part (400), the magnetic drive part (300) and the mounting cover (500).

10. The linked on-off valve of claim 1, wherein: The linkage on-off valve is used for controlling a gas valve assembly, the gas valve assembly comprises a gas valve body (700) and a permanent fire assembly (800), the gas valve body (700) is provided with a flameout protection electromagnetic valve (710) and a permanent fire gas output end (720), the permanent fire assembly (800) comprises a permanent fire burner (810) and a thermocouple (820), the permanent fire burner (810) is connected to the permanent fire gas output end (720) through a permanent fire gas pipeline, the thermocouple (820) is used for detecting a flame of the permanent fire burner (810), the thermocouple (820) is electrically connected with the flameout protection electromagnetic valve (710), and the valve body (100) is connected in series with the permanent fire gas pipeline through the gas inlet channel (111) and the gas outlet channel (112) to control opening and closing of the permanent fire gas pipeline.

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