A fire signal butterfly valve

Abstract

The present invention belongs to the field of fire protection, and particularly relates to a fire protection signal butterfly valve, including a valve body, a valve stem and a butterfly plate. A cover is provided outside the valve body, and the valve stem is located at the bottom of a transmission wheel and is provided with two fixings for clamping the valve stem. A card slot is provided on the side of the bottom of the transmission wheel opposite to the fixing, and a clamp embedded in the card slot is provided on the fixing. The butterfly valve of the present invention is installed and used for a long time. If the outside of the valve stem is corroded by water, external air or other conditions and the sliding teeth are loosened, then when the fire protection is temporarily applied, the main end drives the transmission signal to the controller to turn on the driving motor and the butterfly valve cannot be opened. At this time, the valve stem can be clamped by moving the two fixings at the same time, and the fixings can be driven to rotate at the same time and the clamped valve stem can be driven by the rotation of the transmission wheel, so as to achieve a standby effect, and ensure that it can continue to be used when encountering fire protection problems, to avoid damage and inability to open, delaying fire protection rescue or fire protection emergency.

Description

Technical Field

[0001] The invention discloses a butterfly valve, in particular to a fire signal butterfly valve. Background Art

[0002] Valves generally act in transport pipes for gases, liquids, etc., and their function is to open, close and regulate. Existing valves include gate valves, check valves, ball valves and butterfly valves, and different valves have different advantages. Valves are widely used and the type of valve to be used is selected according to different situations. At the same time, with the progress of life and the development of science and technology, many valves are also automated or equipped with sensors. In the existing technology, the signal butterfly valve is one type, and it is widely used in fire protection facilities.

[0003] In firefighting applications, a signal butterfly valve is used to detect whether there is water leakage. It senses the water flow through a sensor or inductor. If there is leakage, a signal can be sent to the main end through the sensor to prompt the inspection or on-duty personnel to repair the fault in time, so as to avoid damage caused by opening the signal butterfly valve without finding the leakage and delaying the firefighting application, or directly output a signal through the main end to control the controller on the signal butterfly valve, and drive the motor through the controller to drive the rotating rod on the valve to achieve the effect of automatically controlling the opening and closing of the valve. In the prior art, the motor is generally rotated by the controller and the connected valve stem is driven to drive the butterfly plate. In this way, the valve stem connection will penetrate a little bit along the valve stem due to long-term use, so that the connection between the valve stem and the motor will slip due to long-term erosion of water. If it is not repaired in time, it will be unable to be opened if it is used for firefighting. Therefore, this application proposes a new solution, so that when encountering firefighting problems, even if the sliding teeth are damaged and cannot be opened, there is a backup opening method. Summary of the invention

[0004] The purpose of the present invention is to provide a fire signal butterfly valve in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fire signal butterfly valve, comprising a valve body, a valve stem and a butterfly plate, the valve body is provided with a cover, a driving motor is provided inside the cover, a controller 1 is provided on the driving motor, a driving wheel is provided on the driving motor, a transmission wheel connected to the driving wheel is clamped on the valve stem, two fixing members for clamping the valve stem are provided at the bottom of the transmission wheel, and the fixing members are symmetrically arranged, a card slot is provided on the bottom of the transmission wheel on the side opposite to the fixing member, a card member embedded in the card slot is provided on the fixing member, a pushing component for driving the fixing member to move upward and drive the card member to embed in the card slot is provided inside the cover, and a driving component for pushing the fixing member to press against the valve stem is provided on the cover;

[0006] The pushing assembly includes a set of sleeves rotatably connected to the cover, an arc block 1 for pushing the fixing member to move upward is arranged in an inner ring of the set of sleeves 1, the contact surfaces of the arc block 1 and the fixing member are both arc surfaces, a plug-in embedded in the set of sleeves 1 is arranged at the rear end of the fixing member, and a guide groove for accommodating the movement of the plug-in and limiting the movement path of the fixing member is arranged on the set of sleeves 1;

[0007] The driving assembly includes a set of components arranged at the upper end of the set of components, the upper end of the set of components is provided with a protrusion one embedded in the set of components, the set of components is provided with an abutting block abutting with the protrusion one, the set of components is provided with an arc block two located on the side of the guide groove abutting with the plug-in and pushing the fixing part to clamp the valve stem, the surface of the arc block two abutting against the plug-in is also an arc surface, and the arc block one and the arc block two are staggered.

[0008] Preferably, the cover is provided with a motor 2 connected to the kit 1, and the motor 2 is also provided with a controller. The kit 1 is provided with a protrusion 2 located at the end of the abutment block away from the protrusion 1 for pushing the abutment block to drive the kit 2 to reset.

[0009] Preferably, the inner wall of the guide groove has magnetic force, and the plug-in and the inner wall of the guide groove are attracted to each other.

[0010] Preferably, a plurality of clamping blocks for clamping the valve stem are provided on the inner ring of the fixing member, and the cross-section of the clamping blocks is sawtooth-shaped.

[0011] Preferably, a limiting block 1 is slidably connected to the clamp, the limiting block 1 abuts against the kit 2, a spring 1 is provided between the limiting block 1 and the clamp, and a limiting groove 1 is provided near the outer side of the clamping slot, which penetrates the transmission wheel and accommodates the limiting block 1 for embedding.

[0012] Preferably, the card piece has magnetic force and is attracted to the card slot.

[0013] Preferably, the cover is provided with a cylinder at the upper end of the valve stem, the cylinder is provided with a controller 2, the butterfly plate is provided with a plurality of limit grooves 2, the valve stem is provided with a plurality of limit blocks 2 embedded in the limit grooves 2, a push rod connected to the cylinder is slidably connected in the valve stem, and the push rod is provided with a plurality of push blocks abutting against the limit blocks 2.

[0014] Preferably, the surface where the pushing block abuts against the second limiting block is an inclined surface, and a second spring is provided between the second limiting block and the valve stem.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] First, by installing the butterfly valve and using it for a long time, if the outside of the valve stem is corroded by water or other conditions such as external air, the teeth of the transmission wheel driven by the valve stem and the drive motor will be loose. At this time, when it is temporarily used for fire fighting, the main end drives the transmission signal to the controller to turn on the drive motor and the butterfly valve cannot be opened. At this time, the motor 2 is driven by the main end to drive the kit 1 to rotate. The kit 1 drives the internal arc block to abut against the fixing part at the same time, and pushes the fixing part to rise, so that the clamping part on the fixing part is embedded in the card groove of the transmission wheel, and then the protrusion 1 abuts against the abutment block. After the kit 1 continues to rotate, the protrusion 1 pushes the abutment block to drive the kit 2 to rotate so that the arc block 2 pushes the fixing part into the valve stem, so that the two fixing parts move at the same time to clamp the valve stem, and after the transmission wheel rotates, the fixing part can be driven to rotate at the same time and the clamped valve stem can be driven, so as to achieve the effect of standby. When encountering fire fighting problems, it can be guaranteed that it can continue to be used to avoid damage and inability to open, delaying fire rescue or fire emergency;

[0017] Secondly, after the fixing part moves up, the card is embedded in the card slot, and is adsorbed to the transmission wheel through the magnetic force on the card, and the limit block 1 on the card is separated from the blocking of the set 2 and is opposite to the limit slot 1. At this time, the spring 1 will push the limit block 1 outward and embed it into the limit slot 1, so as to connect and ensure that the card will not be separated from the transmission wheel, so that if the fixing part is driven to rotate and is separated from the support of the arc block 1, it will not fall, thereby ensuring the connection between the fixing part and the transmission wheel. Secondly, the arc block 2 is longer, which is greater than the rotation path of the fixing part, ensuring the clamping of the fixing part and the valve stem;

[0018] When the valve is in a state of being opened, the control switch of the control cylinder 2 on the main end is turned on, so that the cylinder is inflated, moved downward and the push rod is driven downward, so that the push block on the push rod is simultaneously moved downward and abutted against the limit block 2, and when the push block is moved downward, the limit block 2 is pushed outward along the inclined surface of the limit block 2 to compress the spring 2, and the limit block 2 is pushed to be embedded in the limit groove 2 on the butterfly plate, so as to achieve the effect of connecting with the butterfly plate. Because the push rod and the valve stem are connected for sliding up and down, the push rod can be driven to rotate when the valve stem rotates, so as to ensure that the push block blocks the limit block 2 from resetting, and ensure the connection between the valve stem and the butterfly plate so that the butterfly plate can be driven to rotate again by the valve stem, so as to ensure the use and opening and closing of the butterfly valve, and avoid delaying the use of fire protection. When the valve cannot be opened by the main end control driving motor, the control switch representing the motor 2 can be immediately turned on. When it still cannot be opened, the control switch of the cylinder can be continued to be turned on, so as to ensure that there will be no error in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a fire signal butterfly valve;

[0020] Figure 2 This is a schematic diagram of the internal structure of a fire signal butterfly valve;

[0021] Figure 3 This is a schematic diagram of the internal structure of a fire signal butterfly valve cover;

[0022] Figure 4 for Figure 3 A local enlarged schematic diagram at point A;

[0023] Figure 5 It is a schematic diagram of the internal structure of a fire signal butterfly valve push component and a drive component;

[0024] Figure 6 This is a schematic diagram of the internal structure of a fire signal butterfly valve stem and a butterfly plate;

[0025] Figure 7 for Figure 6 A partial enlarged schematic diagram at point B.

[0026] : 1. valve body; 2. valve stem; 3. butterfly plate; 4. transmission wheel; 5. fixing piece; 6. slot; 7. clamp; 8. kit one; 9. arc block one; 10. plug-in; 11. guide groove; 12. kit two; 13. protrusion one; 14. abutment block; 15. arc block two; 16. motor two; 17. protrusion two; 18. abutment block; 19. limit block one; 20. spring one; 21. limit groove one; 22. cylinder; 23. controller two; 24. limit groove two; 25. limit block two; 26. push rod; 27. push block; 28. spring two; 29. ​​cover. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] A fire signal butterfly valve, such as Figure 1-Figure 7As shown, it includes a valve body 1, a valve stem 2 and a butterfly plate 3. A cover 29 is provided outside the valve body 1, a driving motor is provided inside the cover 29, a controller 1 is provided on the driving motor, a driving wheel is provided on the driving motor, and a transmission wheel 4 connected to the driving wheel is clamped on the valve stem 2. After the butterfly valve is used in some pipes for fire protection, since one end of the butterfly valve stem 2 is on the outside, although it has a cover 29, it will still be eroded by infiltrated rainwater and external air, and even the internal liquid will also be infiltrated to cause erosion. Therefore, long-term use will cause the connection between the transmission wheel 4 and the valve stem 2 to loosen, and the driving motor cannot be effectively turned on after it is turned on. The valve is opened. At the same time, because fire-fighting installations generally have many devices, when the valve is not used and not repaired in time, if an emergency fire situation occurs, it cannot be used, resulting in fire-fighting errors or affecting fire-fighting use. In the prior art, it is generally started by a switch in the control room and a signal is transmitted to the controller. The controller controls the switch of the drive motor to turn on the drive motor, and the drive wheel is driven to rotate by the rotating shaft, so that the drive wheel drives the meshed transmission wheel 4 to rotate, and drives the clamped valve stem 2, so that the butterfly plate 3 is driven to open when the valve stem 2 rotates, thereby achieving the effect of automatic control.

[0029] The valve stem 2 is provided with two fixing members 5 for clamping the valve stem 2 at the bottom of the transmission wheel 4, and the fixing members 5 are symmetrically arranged. A card slot 6 is provided on the side of the bottom of the transmission wheel 4 opposite to the fixing member 5, and a card member 7 embedded in the card slot 6 is provided on the fixing member 5. A pushing component for driving the fixing member 5 to move upward and driving the card member 7 to embed in the card slot 6 is provided in the cover 29. A driving component for pushing the fixing member 5 to press against the valve stem 2 is provided on the cover 29. The pushing component includes a kit 8 rotatably connected to the cover 29, and an arc block 9 for pushing the fixing member 5 to move upward is annularly arranged in the kit 8. The abutting surfaces of the arc block 9 and the fixing member 5 are both arc surfaces. A plug-in 10 embedded in the kit 8 is provided at the rear end of the fixing member 5. The kit 8 is provided with a plug-in 10 for accommodating the movement of the plug-in 10 and limiting the movement path of the fixing member 5 The guide groove 11 of the diameter of the guide groove 11, the driving component includes a set 2 12 arranged at the upper end of the set 1 8, the upper end of the set 1 8 is provided with a convex block 13 embedded in the set 2 12, the set 2 12 is provided with an abutting block 14 abutting with the convex block 13, the set 2 12 is located on the side of the guide groove 11 and is provided with an arc block 2 15 abutting with the plug-in 10 and pushing the fixing member 5 to clamp the valve stem 2, the surface of the arc block 2 15 abutting with the plug-in 10 is also an arc surface, the arc block 1 9 and the arc block 2 15 are staggered, and after using this device, if the valve cannot be opened after the driving motor is turned on, the cover 29 is provided with a motor 2 16 connected with the set 1 8, and the motor 2 16 is also provided with a controller, at this time, by starting the standby switch in the control room, the signal is output to make the motor 2 16 The controller on the upper part turns on the motor 2 16, so that the motor 2 16 rotates and drives the set 1 8 to rotate through the converter, and the converter can be a bevel gear or the like. It is a prior art and will not be discussed in detail here. The rotation of the set 1 8 drives the arc block 1 9 of the inner ring to rotate at the same time. When the arc block 1 9 rotates, the arc surface of the arc block 1 9 abuts against the bottom side of the fixing member 5, and continues to move to push the fixing member 5 upward along the arc surface at the bottom of the fixing member 5, and at the same time drives the clamping member 7 on the fixing member 5 to move into the clamping groove 6 at the bottom of the transmission wheel 4, so that the fixing member 5 is connected to the transmission wheel 4, and the fixing member 5 is embedded in the guide groove 11 of the set 2 12 through the plug-in 10, so as to ensure that it will not move left and right when it is pushed upward. When the fixing member 5 moves up and the plug-in 1 After 0 moves to the guide end, the set 18 continues to rotate, and the protrusion 13 on the set 18 abuts against the abutment block 14, and the abutment block 14 pushes the set 2 12 to rotate so that the arc block 2 15 of the set 2 12 located on the side of the guide groove 11 abuts against the plug-in 10, and the plug-in 10 and the fixing member 5 are pushed into the valve stem 2 along the arc surface of the plug-in 10. A plurality of abutment blocks 18 for clamping the valve stem 2 are provided on the inner ring of the fixing member 5. The cross section of the abutment block 18 is serrated, so that the side of the fixing member 5 with the abutment block 18 is pushed and abutted against the valve stem 2. Because the fixing member 5 is symmetrically arranged, the abutment block 18 on the inner side of the fixing member 5 abuts against the valve stem 2, which will have the effect of clamping the valve stem 2. After this arrangement, even if the transmission wheel 4 and the valve stem 2 are loose,After being clamped by the fixing member 5, when the driving wheel 4 rotates and drives the fixing member 5 to rotate at the same time, the valve stem 2 will also be driven to rotate through the fixing member 5, so that the valve stem 2 can drive the internal butterfly plate 3 to ensure the opening and closing of the valve. After the above arrangement, if the valve cannot be opened during the firefighting operation, the spare switch at the control end can be turned on, so that the motor 2 16 drives the connection with the driving wheel 4 through the fixing member 5 and clamps the valve stem 2 to drive it to open, ensuring that the valve can be used normally during the firefighting operation, thereby avoiding the situation where the valve cannot be opened, resulting in firefighting errors or slow rescue.

[0030] A limit block 19 is slidably connected to the card 7, and the limit block 19 abuts against the set 2 12. A spring 20 is provided between the limit block 19 and the card 7. A limit groove 21 penetrating the transmission wheel 4 and accommodating the limit block 19 is provided near the outer side of the card slot 6. The card 7 has magnetic force and is mutually adsorbed with the card slot 6. Secondly, when the card 7 is embedded in the card slot 6, the limit block 19 is relative to the limit groove 21 at the rear end of the card slot 6. At the same time, the card 7 and the card slot 6 are mutually adsorbed by magnetic force to achieve the effect of stabilizing the fixing member 5. In the normal state, the limit block 19 is blocked by the set 2 12 and cannot be separated from the card 7. After the limit block 19 is relative to the limit groove 21, After the restriction and obstruction of the set 12 is broken away, it can be pushed outward by the spring 20 and moved to be embedded in the limit groove 21, so as to ensure that the card 7 will not break away from the card slot 6, and the limit block 19 and the limit groove 21 are mutually restricted to ensure that the rotation of the transmission wheel 4 drives the fixing member 5 to rotate at the same time. Under this setting, after the valve is opened, the driving motor control is reversed, so that the fixing member 5 can be driven by the transmission wheel 4 to reset and the butterfly plate 3 can be closed. In this way, after emergency use, after maintenance, the maintenance personnel will use an object smaller than the limit groove 21 to embed inward to push the limit block 19 to re-embed the spring 28 in the card connection to re-compress the spring 28. The end of the abutment block 14 away from the protrusion 13 is provided with a protrusion 17 for pushing the abutment block 14 to drive the set 12 to reset. At this time, the motor 16 is reversed to drive the motor 16 to drive the set 18 to reset. After the set 18 is reversed, the protrusion 17 will be driven to move and re-abut on the abutment block 14, and the set 12 will be driven to rotate and reset, so that the guide groove 11 and the plug-in 10 are opposite to each other again. The inner wall of the guide groove 11 has magnetic force, and the plug-in 10 and the inner wall of the guide groove 11 are attracted to each other, and the guide groove 11 has magnetic force and The magnetic forces of the plug-in 10 are mutually attracted, so that the plug-in 10 drives the fixing part 5 to reset and re-embed it into the guide groove 11, and when the kit 8 rotates, the arc block 9 cancels the obstruction of the fixing part 5, and the fixing part 5 also moves down again with the drop of gravity, and the downward movement of its own weight is greater than the magnetic force of the clamp 7, so as to achieve the effect of resetting and ensure the effect of repeated use after maintenance. The rest can be repaired by self-maintenance. Secondly, the driving motor and the forward and reverse rotation of the motor 1 are both existing technologies and will not be discussed in detail here. At the same time, the valve stem 2 is located at the top of the cover 29 and there is also a device to limit its rotation.

[0031] The cover 29 is located at the upper end of the valve stem 2 and is provided with a cylinder 22, on which a controller 23 is provided, on which a plurality of limit grooves 24 are provided, on which a plurality of limit blocks 25 embedded in the limit grooves 24 are provided, and in which a push rod 26 connected to the cylinder 22 is slidably connected in the valve stem 2, on which a plurality of push blocks 27 abutting against the limit blocks 25 are provided, and the abutting surfaces of the push blocks 27 and the limit blocks 25 are inclined surfaces, and between the limit blocks 25 and the valve stem 2 there is a spring 28, and secondly, when the valve stem 2 and the butterfly plate 3 are connected in the pipeline, they will also come into contact with the liquid, etc., thereby causing the connection between the valve stem 2 and the butterfly plate 3 to become loose, and when the valve stem 2 rotates, the butterfly plate 3 cannot be moved. The situation that the plate 3 is completely driven to open occurs, so that neither the driving motor nor the motor can drive the butterfly plate 3. Therefore, by turning on the switch representing the control cylinder 22 in the control room, a signal is output to the controller 23, so that the controller 23 turns on the switch on the cylinder 22, so that the cylinder 22 is inflated and moves downward, and drives the connected push rod 26 to move downward at the same time, and when the push rod 26 moves downward, it will drive the push block 27 on the push rod 26 to move at the same time, and when the push block 27 moves downward, it will abut against the limit block 25 on the valve stem 2 and continue to move, and the inclined surface of the push block 27 will move downward along the inclined surface on the limit block 25, and the limit The block 25 pushes outward and compresses the spring 28, and at the same time embeds into the limit groove 24 on the butterfly plate 3, so that the valve stem 2 is reconnected with the butterfly plate 3 under the action of the limit block 25 and the limit groove 24, ensuring that the valve stem 2 drives the limit block 25 to rotate at the same time when it rotates, and drives the butterfly plate 3 to rotate at the same time under the interaction force of the limit groove 24 to achieve the effect of opening and closing. Secondly, the limit block 25, the limit groove 24 and the push block 27 are set in multiple coordination, which can ensure that the valve stem 2 better drives the butterfly plate 3 to open. On the contrary, the cylinder 22 is deflated after maintenance, and the cylinder 22 moves up and resets to drive the push rod 26 to reset, so that the push block 27 It also moves upward to cancel the push and obstruction of the limit block 25. At this time, the spring 28 will push the limit block 25 back to its original position and disengage from the limit groove 24 through its own elastic force. After the above arrangement, two spare methods are used to ensure that when the connection between the valve stem 2 and the butterfly plate 3 or the drive motor cannot be fully driven to rotate due to wear and tear due to long-term use, the valve stem 2 can be reconnected through the two spare switch drives, and it is ensured that even if the damage is not repaired in time, it can still be opened through the spare drive method, ensuring that it can be used as usual in the event of emergency or fire emergency, and will not delay temporary use or fire rescue.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fire signal butterfly valve, comprising a valve body (1), a valve stem (2) and a butterfly plate (3), wherein a cover (29) is provided outside the valve body (1), a drive motor is provided inside the cover (29), a controller 1 is provided on the drive motor, a drive wheel is provided on the drive motor, a transmission wheel (4) connected to the drive wheel is clamped on the valve stem (2), and the characteristics are as follows: The valve stem (2) is provided with two fixing members (5) for clamping the valve stem (2) at the bottom of the transmission wheel (4), and the fixing members (5) are symmetrically arranged. A clamping groove (6) is provided on the side of the bottom of the transmission wheel (4) opposite to the fixing member (5). The fixing member (5) is provided with a clamping member (7) embedded in the clamping groove (6). A pushing component for driving the fixing member (5) to move upward and drive the clamping member (7) to embed in the clamping groove (6) is provided in the cover (29). A driving component for pushing the fixing member (5) to press against the valve stem (2) is provided on the cover (29); The pushing assembly comprises a sleeve one (8) rotatably connected to the cover (29); an arc block one (9) for pushing the fixing member (5) upward is provided in an annular shape inside the sleeve one (8); the abutting surfaces of the arc block one (9) and the fixing member (5) are both arc surfaces; a plug-in (10) embedded in the sleeve one (8) is provided at the rear end of the fixing member (5); and a guide groove (11) for accommodating the movement of the plug-in (10) and limiting the movement path of the fixing member (5) is provided on the sleeve one (8); The driving assembly comprises a second set (12) arranged at the upper end of the first set (8), the upper end of the first set (8) is provided with a protrusion one (13) embedded in the second set (12), the second set (12) is provided with an abutting block (14) abutting against the protrusion one (13), the second set (12) is provided with an arc block two (15) located on the side of the guide groove (11) abutting against the plug-in (10) and pushing the fixing member (5) to clamp the valve stem (2), the surface of the arc block two (15) abutting against the plug-in (10) is also an arc surface, and the arc block one (9) and the arc block two (15) are staggered. The cover (29) is provided with a second motor (16) connected to the first set (8), and the second motor (16) is also provided with a controller. The first set (8) is provided with a second protrusion (17) at one end of the abutment block (14) away from the first protrusion (13) for pushing the abutment block (14) to drive the second set (12) to reset.

2. A fire signal butterfly valve according to claim 1, characterized in that: The inner wall of the guide groove (11) has magnetic force, and the plug-in unit (10) and the inner wall of the guide groove (11) are attracted to each other.

3. A fire signal butterfly valve according to claim 1, characterized in that: A plurality of clamping blocks (18) for clamping the valve stem (2) are provided on the inner ring of the fixing member (5); the cross section of the clamping blocks (18) is sawtooth-shaped.

4. A fire signal butterfly valve according to claim 1, characterized in that: A limiting block (19) is slidably connected to the clamp (7), the limiting block (19) abuts against the second set (12), a spring (20) is provided between the limiting block (19) and the clamp (7), and a limiting groove (21) is provided near the outer side of the clamping groove (6) and penetrates the transmission wheel (4) and accommodates the limiting block (19) to be embedded.

5. The fire signal butterfly valve according to claim 1, characterized in that: The card member (7) has magnetic force and is attracted to the card slot (6).

6. A fire signal butterfly valve according to claim 1, characterized in that: The cover (29) is provided with a cylinder (22) at the upper end of the valve stem (2), the cylinder (22) is provided with a second controller (23), the butterfly plate (3) is provided with a plurality of second limit grooves (24), the valve stem (2) is provided with a plurality of second limit blocks (25) embedded in the second limit grooves (24), a push rod (26) connected to the cylinder (22) is slidably connected inside the valve stem (2), and the push rod (26) is provided with a plurality of push blocks (27) abutting against the second limit blocks (25).

7. A fire signal butterfly valve according to claim 6, characterized in that: The surface where the pushing block (27) abuts against the second limiting block (25) is an inclined surface, and a second spring (28) is provided between the second limiting block (25) and the valve stem (2).

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