Signal device for fire valve

By designing signal devices suitable for different valve types, compatibility issues are solved, automated control is realized, operating procedures are simplified, response speed and system stability are improved, and maintenance costs are reduced.

CN120351370AInactive Publication Date: 2025-07-22YANGZHOU DINGNIU FIRE EQUIPMENT CO LTD
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Patent Information

Application Number
CN202510677806.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-26
Publication Date
2025-07-22
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing fire valve signaling devices have different transmission methods of different types of valves, which lead to compatibility problems, which increases system integration and management complexity, and increases maintenance costs and procurement complexity.

Method used

A signal device including a fixing frame and a signal body is designed, equipped with a multi-way valve opening and closing mechanism, and through the combination of a slide plate, a synchronous wheel and a motor, it realizes automatic adaptation and unified control of different types of valves.

Benefits of technology

Simplify the operation process, improve the response speed and system flexibility, reduce maintenance costs and manual intervention, and enhance the stability and security of the system.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a signal device for a fire-fighting valve, and belongs to the technical field of fire-fighting equipment.The signal device for the fire-fighting valve comprises a fixing frame and a signal body, the signal body is installed on the surface of the top end of the fixing frame, the middle of the fixing frame is in a hollowed-out state, and meanwhile a through groove is formed in one side of the fixing frame in a penetrating mode; a valve multi-mode opening and closing mechanism is installed in the middle of the fixing frame and used for controlling opening and closing modes of different types of valves. The valve multi-mode opening and closing mechanism is adopted, the opening and closing modes of different types of fire control valves can be controlled, the response speed, flexibility, safety and reliability of a system can be improved, meanwhile, it can be ensured that in various emergency situations, response is conducted in time, the system performance is optimized, the maintenance cost is reduced, and therefore a more efficient fire control guarantee is provided.
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Description

Technical Field

[0001] The present invention belongs to the technical field of fire-fighting equipment, and particularly relates to a signal device for a fire-fighting valve. Background Art

[0002] Fire-fighting valves are mainly used to control the flow rate and flow direction of fire-fighting water sources to ensure that fire-fighting water can be supplied to the areas where fire extinguishing is needed in a timely manner. They can be automatically or manually opened during a fire to ensure that equipment such as sprinkler systems and fire hydrants can work smoothly, extinguish the fire source in a timely manner. By reasonably arranging fire-fighting valves, the supply of water flow can be effectively controlled to avoid waste of water resources. The valve system can adjust the water flow rate and distribution according to the actual situation of the fire to ensure the efficient operation of the fire extinguishing system. The signal device can timely feedback information such as the opening and closing state of the valve, pressure changes, and whether there are any failures, helping maintenance personnel quickly discover problems and carry out repairs, thereby avoiding the failure of the fire-fighting system due to valve failures or operation errors.

[0003] Different types of fire-fighting valves (such as ball valves, butterfly valves, gate valves, etc.) have differences in opening and closing methods, control methods, and feedback methods. In order to adapt to these different valve types, various signal devices often need to be selected specifically, increasing the complexity and cost of procurement, making it possible that there may be compatibility problems between different types of signal devices, resulting in the inability to achieve effective integration and management on a unified platform. And due to the different transmission methods of each signal device, the overall design of the fire-fighting system needs to consider the special requirements of each valve, increasing the complexity of system integration and management. Moreover, later maintenance and replacement may require different types of accessories and technical support, which virtually increases the maintenance cost of the system. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a signal device for a fire-fighting valve.

[0005] The technical solution adopted to solve the above technical problem is: A signal device for a fire-fighting valve, including a fixing frame and a signal main body. The signal main body is installed on the top surface of the fixing frame, and the middle part of the fixing frame is in a hollow state. At the same time, a through groove is penetrated and opened on one side of the fixing frame. A valve multi-way opening and closing mechanism is installed in the middle of the fixing frame for controlling the opening and closing methods of different types of valves.

[0006] Through the above technical solution, it can be automatically adjusted to ensure compatibility with the opening and closing actions of various valves, thereby avoiding the problem of equipment mismatch. At the same time, it enables operators to avoid manually adjusting or configuring the control method of each valve, simplifies the operation process, reduces human operation errors, and especially in an emergency, can quickly and correctly execute the opening and closing operations.

[0007] Furthermore, the multi-mode opening and closing mechanism of the valve includes two slides, and the two slides are respectively slidably connected to the top and bottom of the fixed frame, and the fixed frame limits the slides. The middle part of the slide is hollow, and the first synchronous wheels are rotatably connected to both ends of the slide.

[0008] Through the above technical solution, when adapting to the switching actions of different valves, the response time can be accelerated, ensuring that each valve can perform the switching action in time in emergency situations such as fire, thereby improving the response speed of the entire fire protection system.

[0009] Furthermore, the top and bottom of the fixed frame are respectively rotatably connected to four limiting wheels arranged in a rectangular structure, and the limiting wheels limit the skateboard, the top and bottom sides of the fixed frame are respectively rotatably connected to two second synchronous wheels, and a synchronous belt is transmission-connected between the first synchronous wheel, the limiting wheel and the second synchronous wheel, and the synchronous belt is arranged in a cross-shaped structure as a whole.

[0010] The above technical solution can eliminate the trouble of debugging each valve type separately, thereby simplifying maintenance work, reducing the demand for professional technicians, saving time and cost of maintenance and repairs, and ensuring that all valves can be opened and closed correctly as expected under any circumstances, avoiding safety hazards caused by manual operation or different valve types, and enhancing the safety of the fire protection system.

[0011] Furthermore, a threaded rod is rotatably connected inside the skateboard, and the end of the threaded rod away from the skateboard is threadedly connected to the fixed frame, and at the same time, a chain assembly is rotatably connected to one side of the two skateboards, the sprocket connecting shaft in the chain assembly is rotatably connected to the skateboard, and the through end of the sprocket connecting shaft in the chain assembly is fixedly connected to the threaded rod, and a knob is fixedly connected to one side of the sprocket at the bottom of the fixed frame in the chain assembly.

[0012] Through the above technical solution, the signal output can be automatically adjusted according to the actual switching action of the valve, reducing system failures caused by valve mismatch or switching signal errors, enhancing the stability and reliability of the entire fire protection system. At the same time, the system's intelligent management capabilities are enhanced, and it can monitor and automatically adjust the working status of each valve in real time, thereby improving the automation level and management efficiency of the entire system and further optimizing the operation of fire protection equipment.

[0013] Furthermore, a connecting rod is fixedly connected between the second synchronous wheels located at the top and bottom of the fixed frame, and a first motor is installed on one side of the bottom surface of the fixed frame, the output end of the first motor is rotatably connected to the fixed frame, and the through end of the first motor is fixedly connected to one of the second synchronous wheels, and a wire is electrically connected to the bottom of the first motor, and the other end of the wire is electrically connected to the signal body.

[0014] Through the above technical solution, there is no need to adjust or configure each valve separately. The automatic adaptation function reduces the cost of equipment procurement, installation and commissioning, and also shortens the project implementation cycle and reduces overall costs.

[0015] Furthermore, the two slides are fixedly connected to a frame on the side away from the knob, and a plurality of spring rods are installed on the side of the frame facing the fixed frame. At the same time, the spring rod is fixedly connected to the fixed frame at one end away from the frame, and the two first synchronous wheels on the side away from the chain assembly are fixedly connected with a fixed rod, and the fixed rod is rotatably connected to the slide, the interior of the fixed rod is a hollow structure, and the two ends of the fixed rod are open, and two limit strips are welded to the inner wall of the fixed rod.

[0016] Through the above technical solution, by adjusting the adaptability of the signal device, control failure or equipment incompatibility caused by different valve drive shaft positions is avoided, ensuring the normal operation and unified control of all valves.

[0017] Furthermore, a driving rod is slidably connected inside the fixed rod, and limiting grooves are provided on both sides of the driving rod, the limiting strip is located in the limiting groove, and the limiting strip limits the driving rod, an I-block is fixedly connected to the top end of the driving rod, and a fixing piece is installed at the bottom end of the driving rod, a second motor is installed at the top of the frame facing the fixed frame, and a fork-shaped rod is fixedly connected to the output end of the knob.

[0018] Through the above technical solution, the adaptability of the transmission shaft to different positions can be adjusted, so as to realize automatic control of various valves and reduce manual intervention, thereby improving the automation and intelligence level of the entire fire protection system.

[0019] Furthermore, the fork-shaped rod is rotatably connected to one end away from the second motor with two rollers, and the two rollers are located on the inner wall of the I-shaped block, and the two rollers engage and limit the I-shaped block.

[0020] Through the above technical solution, by adapting to the transmission shaft positions of different valve switches, the signal device reduces the problem of individual valves not being able to operate normally due to different valve positions, making it convenient for maintenance personnel to uniformly inspect and manage the entire system.

[0021] The beneficial effects of the present invention are as follows: (1) In the present invention, the signal main body controls the operation of the first motor and the second motor respectively. When the first motor operates, the first synchronous wheels and the limiting wheels at the top and bottom of the fixing frame rotate simultaneously, thereby driving the fixing rod to rotate in the horizontal direction, and then driving the driving rod to rotate in the horizontal direction, prompting the fixing member to drive the switch transmission shaft of the valve to rotate. When the second motor operates, it can drive the fork-shaped rod to rotate with the output end of the second motor as the origin. The roller on one side of the fork-shaped rod moves synchronously, so that when the roller and the I-shaped block have relative sliding, a displacement difference is generated, thereby driving the driving rod at the bottom of the I-shaped block to slide inside the fixing rod, and then prompting the fixing member to drive the switch transmission shaft of the valve to move up and down in the vertical direction. This can avoid using different control methods for each valve, thereby reducing the complexity of the operator and improving the response speed and efficiency;

[0022] (2) In the present invention, rotating the knob drives the chain assembly to drive, so that the threaded rod inside the slide plate rotates, and then the slide plate and its components move back and forth on the fixing frame. When the slide plate moves back and forth on the fixing frame, the distance between the first synchronous wheels and the limiting wheels at both ends of the slide plate changes synchronously, prompting the length of the synchronous belt between the first synchronous wheels and the limiting wheels on both sides of the slide plate to change. The synchronous belt can always be driven, and then the fixing rod can always drive the fixing member to drive the switch transmission shaft of the valve, which can adjust to adapt to different transmission shaft positions, enabling the system to be compatible with various valve types and improving the flexibility and adaptability of the system. Brief Description of the Drawings

[0023] Figure 1 is the structural schematic diagram of the first perspective of the present invention;

[0024] Figure 2 is the structural schematic diagram of the second perspective of the present invention;

[0025] Figure 3 is the structural schematic diagram of the third perspective of the present invention;

[0026] Figure 4 is the structural schematic diagram of the fourth perspective of the present invention;

[0027] Figure 5 is Figure 2 the enlarged structural schematic diagram of the A position of

[0028] Figure 6 is the structural schematic diagram of the fifth perspective of the present invention;

[0029] Figure 7 is Figure 6 the enlarged structural schematic diagram of the B position of

[0030] Figure 8It is a schematic structural diagram of the first perspective of the connection between the skateboard and the fixing frame of the present invention;

[0031] Figure 9 It is a schematic structural diagram of the second perspective of the connection between the skateboard and the fixing frame of the present invention.

[0032] Reference numerals: 11, fixing frame; 12, signal body; 13, through groove; 2, valve multi-way opening and closing mechanism; 21, skateboard; 22, first synchronous pulley; 23, limiting wheel; 24, second synchronous pulley; 25, synchronous belt; 26, threaded rod; 27, chain assembly; 28, connecting rod; 29, fixing rod; 210, limiting strip; 211, knob; 212, wire; 213, first motor; 214, frame; 215, spring rod; 216, driving rod; 217, limiting groove; 218, I-shaped block; 219, fork-shaped rod; 220, roller; 221, second motor; 222, fixing member. Detailed implementation manners

[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] As Figures 1 - 9The embodiment shows a signal device for a fire valve, comprising a fixing frame 11 and a signal body 12. The signal body 12 is mounted on the top surface of the fixing frame 11, and can monitor the switch state of the valve in real time, and feed back relevant signals to the fire protection system, which is helpful to quickly detect whether the valve is in a normal working state, timely discover and solve problems, and ensure that the fire protection system can be quickly started in an emergency. The middle part of the fixing frame 11 is hollowed out, and a through groove 13 is penetrated through one side of the fixing frame 11. A valve multi-mode opening and closing mechanism 2 is installed in the middle part of the fixing frame 11 for controlling the switch modes of different types of valves. The valve multi-mode opening and closing mechanism 2 comprises two slide plates 21. A threaded rod 26 is rotatably connected inside the slide plate 21, and the threaded rod 26 is threadedly connected to the fixing frame 11 at one end away from the slide plate 21, and can be automatically adjusted to ensure compatibility with the switch actions of various valves, thereby avoiding the problem of equipment mismatch. At the same time, it allows operators to manually adjust or configure the control mode of each valve without the need to manually adjust or configure the control mode of each valve, thereby simplifying the operation flow. The process reduces human operating errors, especially in emergency situations, the switch operation can be performed quickly and correctly. At the same time, one side of the two slides 21 is rotatably connected with a chain assembly 27, and the sprocket connecting shaft in the chain assembly 27 is rotatably connected to the slide 21, and the sprocket connecting shaft in the chain assembly 27 is fixedly connected to the threaded rod 26. One side of the sprocket at the bottom of the fixed frame 11 in the chain assembly 27 is fixedly connected with a knob 211. The adaptability of adjusting the different positions of the transmission shaft can realize automatic control of various valves, reduce manual intervention, and thus improve the automation and intelligence level of the entire fire protection system. The two slides 21 are respectively slidably connected to the top and bottom of the fixed frame 11. When adapting to the switching actions of different valves, the response time can be accelerated to ensure that each valve performs the switching action in time in an emergency such as a fire, thereby improving the response speed of the entire fire protection system. The top and bottom of the fixed frame 11 are respectively rotatably connected with four limiting wheels 23 arranged in a rectangular structure, and the limiting wheels 23 limit the slide 21.

[0035] like Figures 2 - 9As shown, two second synchronous wheels 24 are respectively rotatably connected to both sides of the top and bottom of the fixing frame 11. A connecting rod 28 is fixedly connected between the second synchronous wheels 24 at the top and bottom of the fixing frame 11. A frame 214 is fixedly connected to one side of the two sliding plates 21 away from the knob 211, providing accurate valve state information, which can ensure that the valve is opened and closed according to the predetermined plan, avoiding the spread of fire or the failure of fire extinguishing caused by the valve not being fully closed or not being opened in time, thereby improving the safety of the system. A number of spring rods 215 are installed on the side of the frame 214 facing the fixing frame 11. At the same time, one end of the spring rod 215 away from the frame 214 is fixedly connected to the fixing frame 11, which can eliminate the trouble of separately debugging each valve type, thus simplifying the maintenance work, reducing the demand for professional technicians, saving the time and cost of maintenance and repair. At the same time, it ensures that in any case, all valves can be opened and closed correctly as expected, avoiding potential safety hazards caused by manual operation or different valve types, and enhancing the safety of the fire protection system. Two first synchronous wheels 22 on the side away from the chain assembly 27 are fixedly connected through a fixing rod 29. It can adapt to different valve types (such as butterfly valves, gate valves, ball valves, etc.), automatically matching the torque, speed and stroke required for their opening and closing actions, without manual repeated debugging, avoiding problems such as valve jamming, seal wear or motor overload and burnout caused by parameter mismatch. A driving rod 216 is slidably connected inside the fixing rod 29, and limiting grooves 217 are provided on both sides of the driving rod 216. The limiting strip 210 is located in the limiting groove 217, and the limiting strip 210 limits the driving rod 216. The top end of the driving rod 216 is fixedly connected to an I-shaped block 218, and a fixing piece 222 is installed at the bottom end of the driving rod 216. A second motor 221 is installed at the top of the side of the frame 214 facing the fixing frame 11. The output end of the knob 211 is fixedly connected to a fork-shaped rod 219. Two rollers 220 are rotatably connected to one end of the fork-shaped rod 219 away from the second motor 221, and the two rollers 220 are located inside the inner wall of the I-shaped block 218. By adapting to the position of the transmission shaft for different valve openings and closings, the signal device reduces the problem that individual valves cannot operate normally due to different valve positions, facilitating maintenance personnel to conduct unified inspection and management of the entire system.

[0036] Such as Figures 3 - 9As shown, at the same time, the two rollers 220 engage and limit the I-shaped block 218, and the fixing rod 29 is rotatably connected with the slide plate 21. The interior of the fixing rod 29 is a hollow structure, and the two ends of the fixing rod 29 are open, which reduces the types of special spare parts, supports remote diagnosis and parameter adjustment, reduces maintenance complexity and labor costs, and at the same time, two limit strips 210 are welded on the inner wall of the fixing rod 29, which can automatically adjust the signal output according to the actual switching action of the valve, reduce system failures caused by valve mismatch or switching signal errors, and enhance the stability and reliability of the entire fire protection system. At the same time, the intelligent management ability of the system is enhanced, and the working status of each valve can be monitored and automatically adjusted in real time, which improves the automation level and management efficiency of the entire system, and further optimizes the operation of the fire protection equipment. A first motor 213 is installed on one side of the bottom surface of the fixing frame 11, which can monitor the valve resistance in real time. When it encounters jamming, rust or foreign matter obstruction, it automatically triggers reverse fine-tuning or slow-release action to avoid strong The output end of the first motor 213 is rotatably connected to the fixed frame 11, and the through end of the first motor 213 is fixedly connected to one of the second synchronous wheels 24. At the same time, the bottom of the first motor 213 is electrically connected to a wire 212, and the other end of the wire 212 is electrically connected to the signal body 12. A synchronous belt 25 is transmission-connected between the first synchronous wheel 22, the limit wheel 23 and the second synchronous wheel 24. There is no need to adjust or configure each valve separately. The automatic adaptation function reduces the cost of equipment procurement, installation and commissioning, and can also shorten the project implementation cycle and reduce the overall cost. The synchronous belt 25 is arranged in a cross-shaped structure as a whole, and the fixed frame 11 limits the skateboard 21. The middle part of the skateboard 21 is hollowed out, and the first synchronous wheel 22 is rotatably connected to both ends of the skateboard 21. By adjusting the adaptability of the signal device, control failure or equipment incompatibility caused by different positions of the valve drive shaft is avoided, and the normal operation and unified control of all valves are guaranteed.

[0037] The working principle of this embodiment is as follows: first, the overall device is installed on the valve, and then the fixing part 222 is connected and fixed to the switch transmission shaft of the valve with bolts. When controlling different types of valve switches, the signal body 12 can control the operation of the first motor 213 and the second motor 221 respectively through the wire 212.

[0038] When the first motor 213 operates, it drives one of the second synchronous pulleys 24 to rotate. Under the combined action of the synchronous belt 25 and the connecting rod 28, the first synchronous pulleys 22 and the limiting pulleys 23 at the top and bottom of the fixing bracket 11 rotate simultaneously, thereby driving the fixing rod 29 to rotate in the horizontal direction. Since the limiting strip 210 is located in the limiting groove 217 of the driving rod 216, the driving rod 216 is driven to rotate in the horizontal direction, prompting the fixing member 222 to drive the switch transmission shaft of the valve to rotate. Moreover, the I-shaped block 218 at the top of the limiting groove 217 and the two rollers 220 in the fork-shaped rod 219 slide relative to each other, without driving the fork-shaped rod 219 to rotate.

[0039] When the second motor 221 operates, it can drive the fork-shaped rod 219 to rotate with the output end of the second motor 221 as the origin. The roller 220 on one side of the fork-shaped rod 219 moves synchronously, causing a displacement difference while sliding relative to the I-shaped block 218, thereby driving the driving rod 216 at the bottom of the I-shaped block 218 to slide inside the fixing rod 29, and then prompting the fixing member 222 to drive the switch transmission shaft of the valve to move up and down in the vertical direction.

[0040] When facing different positions of the switch transmission shafts of different types of valves, the staff can drive the chain assembly 27 to transmit by rotating the knob 211, causing the threaded rod 26 inside the slide plate 21 to rotate, and then causing the slide plate 21 and its components to move back and forth on the fixing bracket 11. When the slide plate 21 moves back and forth on the fixing bracket 11, the distances between the first synchronous pulleys 22 and the limiting pulleys 23 at both ends of the slide plate 21 change synchronously, prompting the length of the synchronous belt 25 between the first synchronous pulleys 22 and the limiting pulleys 23 on both sides of the slide plate 21 to change, enabling the synchronous belt 25 to always transmit, and then prompting the fixing rod 29 to always drive the fixing member 222 to transmit the switch transmission shaft of the valve.

[0041] The above is only a preferred embodiment of the present invention and is not used to limit the protection scope of the present invention.

Claims

1. A signal device for a fire valve, comprising a fixing bracket (11) and a signal main body (12). The signal main body (12) is installed on the top surface of the fixing bracket (11), and the middle part of the fixing bracket (11) is in a hollow state. At the same time, a through groove (13) is formed through one side of the fixing bracket (11). It is characterized in that: A valve multi-mode opening and closing mechanism (2) is installed in the middle of the fixing frame (11) for controlling the opening and closing modes of different types of valves.

2. The signal device for a fire valve according to claim 1, characterized in that, The valve multi-mode opening and closing mechanism (2) includes two sliding plates (21), and the two sliding plates (21) are respectively connected to the top and bottom of the fixing frame (11) through sliding connections, and the fixing frame (11) limits the sliding plates (21). The middle of the sliding plate (21) is in a hollow state, and the two ends of the sliding plate (21) are rotatably connected with first synchronous wheels (22).

3. The signal device for a fire protection valve according to claim 2, characterized in that, Four limiting wheels (23) arranged in a rectangular structure are respectively rotatably connected to the top and bottom of the fixing frame (11), and the limiting wheels (23) limit the sliding plates (21). Two second synchronous wheels (24) are respectively rotatably connected to both sides of the top and bottom of the fixing frame (11), and a synchronous belt (25) is connected between the first synchronous wheels (22), the limiting wheels (23) and the second synchronous wheels (24), and the synchronous belt (25) is arranged in a cross-shaped structure as a whole.

4. The signal device for a fire protection valve according to claim 2, characterized in that, A threaded rod (26) is rotatably connected inside the sliding plate (21), and the end of the threaded rod (26) away from the sliding plate (21) is threadedly connected to the fixing frame (11) through penetration. At the same time, a chain assembly (27) is rotatably connected to one side of the two sliding plates (21). The sprocket connecting shaft in the chain assembly (27) is rotatably connected to the sliding plate (21) through penetration, and the penetrating end of the sprocket connecting shaft in the chain assembly (27) is fixedly connected to the threaded rod (26). A knob (211) is fixedly connected to one side of the sprocket in the chain assembly (27) located at the bottom of the fixing frame (11).

5. The signal device for a fire protection valve according to claim 3, wherein, A connecting rod (28) is fixedly connected between the second synchronous wheels (24) located at the top and bottom of the fixing frame (11). A first motor (213) is installed on one side of the bottom surface of the fixing frame (11). The output end of the first motor (213) is rotatably connected to the fixing frame (11) through penetration, and the penetrating end of the first motor (213) is fixedly connected to one of the second synchronous wheels (24). At the same time, a wire (212) is electrically connected to the bottom of the first motor (213), and the other end of the wire (212) is electrically connected to the signal body (12).

6. The signal device for a fire protection valve according to claim 4, characterized in that, Frames (214) are fixedly connected to one side of the two sliding plates (21) away from the knob (211). A plurality of spring rods (215) are installed on the side of the frame (214) facing the fixing frame (11). At the same time, the ends of the spring rods (215) away from the frame (214) are fixedly connected to the fixing frame (11). Fixing rods (29) are fixedly connected through the first synchronous wheels (22) on the side away from the chain assembly (27), and the fixing rods (29) are rotatably connected to the sliding plates (21) through penetration. The inside of the fixing rod (29) is arranged in a hollow structure, and both ends of the fixing rod (29) are open. At the same time, two limiting strips (210) are welded to the inner wall of the fixing rod (29).

7. The signal device for a fire valve according to claim 6, characterized in that, The fixed rod (29) is slidably connected to a driving rod (216) inside, and limiting grooves (217) are provided on both sides of the driving rod (216), the limiting strip (210) is located in the limiting groove (217), and the limiting strip (210) limits the driving rod (216), the top end of the driving rod (216) is fixedly connected to an I-shaped block (218), and the bottom end of the driving rod (216) is installed with a fixing piece (222), a second motor (221) is installed on the top of the frame (214) facing the fixing frame (11), and the output end of the knob (211) is fixedly connected to a fork-shaped rod (219).

8. The signal device for a fire protection valve according to claim 7, characterized in that, One end of the fork-shaped rod (219) away from the second motor (221) is rotatably connected to two rollers (220), and the two rollers (220) are located on the inner wall of the I-shaped block (218), and the two rollers (220) are engaged and limited to the I-shaped block (218).