Adjustable deluge valve pressure switch

Abstract

The application belongs to the technical field of fire fighting, and particularly relates to an adjustable rain valve pressure switch, which comprises a shell one and a shell two. A moving block for accommodating a pressing piece is arranged in the shell two. A rotating piece is rotatably connected to the shell one. An arc-shaped groove is arranged on the outer ring of the rotating piece. A pushing piece is arranged on the shell two and is opposite to the shell two. A cylinder is fixedly arranged on the support and is used for pushing the pushing piece downward. A protruding block is arranged on the pushing piece and is embedded in the arc-shaped groove and is used for pushing the rotating piece to rotate. After the device is used, the valve at the total gate of the fire water pipe is opened, water is continuously output, the rain valve and other valves are used at the same time, but the rain valve or special valve has insufficient pressure bearing capacity, or the pressure bearing forces of the valves are different. Therefore, when the water pressure needs to be increased for use of the individual valve, the valve with small pressure bearing capacity is automatically closed through the pressure switch, so that manual adjustment and closing are avoided.

Description

Technical Field

[0001] This invention discloses a pressure switch, and more particularly relates to an adjustable deluge valve pressure switch. Background Technology

[0002] Pressure switches, by setting upper and lower pressure limits, automatically connect or disconnect the circuit when the system pressure reaches or falls below these thresholds, thereby controlling the equipment. Deluge valves are the core control valves in automatic sprinkler systems, capable of opening instantly in the event of a fire to achieve rapid, large-area fire suppression. They are primarily used in locations with rapid fire spread and high hazard levels. The need for pressure switches in deluge valves is mainly to enable automatic interlocking start-up of fire pumps, real-time monitoring of pipeline water pressure, and to serve as a key signal source for system operation, ensuring rapid and reliable water supply for fire suppression in the event of a fire.

[0003] In existing technologies, when fire pumps are turned on as needed, the fire network pipes connect multiple valves, and the water usage may vary depending on the location. For example, if a fire hydrant is far from the fire source or in special circumstances, it may require higher water pressure, leading to a larger flow rate. However, excessive water pressure within the network pipes can cause instability and damage. Existing technologies typically install pressure switches at the network pipes or deluge valves to close them promptly when the pressure at the main valve is too high, ensuring the integrity of vulnerable components like deluge valves. Therefore, existing technologies are set according to the pressure tolerance of the network pipes and deluge valves, ensuring activation when the pressure exceeds the tolerance level and closing the network and valves. Existing technologies generally use mechanical switches because they are simple and reliable. However, these switches are set to fixed values ​​and cannot be adjusted, limiting their use to a single value and failing to adapt to different conditions. Therefore, a new solution is proposed that uses mechanical switches that are still reliable and stable, but also adjustable to adapt to different situations. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable deluge valve pressure switch to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable deluge valve pressure switch, comprising a first housing and a second housing, wherein the bottom of the first housing is connected to a fire water pipe connected to a valve, and the bottom of the first housing has an inlet connected to the fire water pipe; the second housing contains a micro switch for controlling the deluge valve; the first housing and the second housing are threadedly connected, and the second housing is embedded in the first housing; the first housing contains a pressing member embedded in the second housing and abutting against the micro switch; the second housing contains a moving block for accommodating the pressing member; a support block is threadedly connected to the bottom of the pressing member at one point on the housing; a spring is provided between the support block and the moving block for supporting the pressing member and the support block; a rotating member is rotatably connected to the outside of the first housing, and the outer ring of the rotating member has an arc-shaped groove; a pushing member is provided at the second housing, which moves relative to the second housing, and the pushing member has a protrusion embedded in the arc-shaped groove and pushing the rotating member to rotate; and the second housing is rotated by the rotating member.

[0006] Preferably, the first outer shell is slidably connected to a pressing member for pushing the pressing member upward at the water inlet. The pushing member is connected to the first outer shell via a bracket. A cylinder for pushing the pushing member downward is fixedly installed on the bracket. The second outer shell is provided with an abutting part that abuts against the moving block. The pushing member is connected to the piston rod of the cylinder. The pushing member has several protrusions. The number of arc-shaped grooves on the rotating member is opposite to the number of protrusions. The arc-shaped grooves are arranged from high to low, and the lowest point of the arc-shaped groove is on the same straight line as the highest point of the adjacent arc-shaped groove.

[0007] Preferably, the fire water pipe is equipped with a water pressure gauge at the main valve at the front end, the water pressure gauge is equipped with a signal sensor, and the cylinder is equipped with a controller for receiving the sensor signal.

[0008] Preferably, the outer casing is provided with a sleeve for supporting and abutting against the moving block, the wiring of the micro switch extends out along the top of the outer casing, and the sleeve is provided with a control button for controlling the cylinder to stop.

[0009] Preferably, the bottom of the movable block is provided with a pull rope, which extends downward and passes through the sleeve and the outer shell. The outer shell and the sleeve are provided with guide wheels for guiding the movement of the pull rope, and the bottom of the bracket is provided with a winding assembly for winding the pull rope.

[0010] Preferably, the winding assembly includes a winding wheel rotatably connected to a bracket. The bracket contains a highly elastic torsion spring for driving the winding wheel to rotate, and the spring force is greater than the weight of the moving block and the spring force of the first spring. A limiting rod for restricting the rotation of the winding wheel is slidably connected to the bracket, and the limiting rod passes through the winding wheel. The limiting rod has a limiting block for embedding into the winding wheel. The winding wheel has a limiting groove for accommodating the embedding of the limiting block and restricting the winding wheel. The bracket contains a groove for accommodating the embedding of a pushing member, and the top of the limiting rod abuts against the lowered pushing member. The limiting rod is divided into upper and lower sections, with the lower section having a smaller diameter than the upper section. The distance between the pushing member and the bottom of the bracket is greater than the distance the outer casing moves downward.

[0011] Preferably, a second spring is provided between the limiting rod and the bracket for pushing the limiting rod to reset. The bottom of the pushing member is provided with a connecting rope that is connected to the winding wheel and pulls the winding wheel to reset. The pull rope and the connecting rope are staggered vertically for winding, and the winding wheel is provided with a separating ring to separate the connecting rope and the pull rope.

[0012] Preferably, the bottom of the take-up reel is provided with a second sleeve, which is fixedly connected to the take-up reel and sleeved outside the bracket. The torsion spring is located between the second sleeve and the bracket and is connected to the second sleeve. The bracket is slidably connected to a plug for limiting the limiting rod inside the second sleeve. The limiting rod is provided with a second limiting groove for accommodating the insertion of the plug. A compression spring is provided between the plug and the bracket, and the second limiting groove is offset from the plug. After the second limiting groove moves down, it is opposite to the plug. The part where the plug is inserted into the second limiting groove is ball-shaped.

[0013] Preferably, the abutting part is slidably connected to the outer shell 2, and a clamping block is slidably connected to the outer shell 2. The clamping block penetrates the outer shell 2 and abuts against the abutting part. The outer shell 2 is wrapped with a steel sleeve for blocking and pushing the clamping block to press against the abutting part, and the steel sleeve is fixed by bolts.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Firstly, after using this device, the water will continue to be output after the valve at the main valve of the fire water pipe is opened. Water will be used at the same time as the deluge valve and other valves. However, the deluge valve or special valve may not have sufficient pressure bearing capacity, or each valve may have different pressure bearing capacity. Therefore, when the water pressure needs to be increased for individual valves, the pressure switch will automatically close the valve to prevent the valve with low pressure bearing capacity from bursting, thus avoiding the need to manually adjust and close each one. Secondly, since pressure switches are generally not set to their maximum pressure capacity to avoid prolonged maintenance at the maximum pressure, which would reduce valve lifespan, this device, being adjustable, automatically adjusts the pressure switch's capacity when the water pressure temporarily increases, ensuring it can withstand higher pressures. This increases the pressure switch's capacity, preventing the valves from immediately shutting off when pressure increases. Consequently, all valves can still discharge water during temporary pressure increases, rather than shutting off immediately. Therefore, in firefighting applications, this allows devices with lower pressure tolerance to be temporarily overloaded to handle special situations and firefighting. Thirdly, by rotating the outer casing 2, the outer casing 2 can move downward along the thread between the sleeve 1 and the outer casing 1, and drive the moving block to move downward synchronously. At the same time, the spring 1 is compressed, causing the spring 1 to deform and compress. The distance between the moving block and the bottom of the pressing part and the support block is shortened, ensuring that the restoring force of the spring 1 pushes the pressing part and the moving block. Even if the water pressure increases, it can prevent the squeezing part from pushing the pressing part upward to open the micro switch. This setting can ensure that the switch can withstand increased pressure, and the deluge valve can temporarily withstand high pressure for a while. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an adjustable deluge valve pressure switch; Figure 2 This is a schematic diagram of an adjustable deluge valve pressure switch and a fire water pipe. Figure 3 This is a schematic diagram of the internal structure of an adjustable deluge valve pressure switch; Figure 4 for Figure 3 A magnified view of a portion at point A; Figure 5 This is a schematic diagram of the internal structure of the support structure. Figure 6 This is a schematic diagram of the internal structure of the outer shell and the rotating component.

[0016] Reference numerals: 1. Outer shell one; 2. Outer shell two; 3. Fire water pipe; 4. Inlet; 5. Micro switch; 6. Pressing part; 7. Pressing part; 8. Moving block; 9. Abutting part; 10. Support block; 11. Spring one; 12. Rotating part; 13. Arc groove; 14. Cylinder; 15. Pushing part; 16. Protrusion; 17. Water pressure gauge; 18. Controller; 19. Sleeve one; 20. Control button; 21. Pull rope; 22. Guide wheel; 23. Rewinding wheel; 24. Torsion spring; 25. Limiting rod; 26. Limiting block; 27. Groove; 28. Bracket; 29. ​​Spring two; 30. Connecting rope; 31. Separating ring; 32. Sleeve two; 33. Insert; 34. Limiting groove two; 35. Limiting groove one; 36. Compression spring; 37. Abutting block; 38. Traction rope; 39. Steel sleeve. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] An adjustable deluge valve pressure switch, such as Figures 1-6As shown, the system includes a first outer casing 1 and a second outer casing 2. The bottom of the first outer casing 1 is connected to a fire water pipe 3, which is connected to a valve. The bottom of the first outer casing 1 also has an inlet 4 connected to the fire water pipe 3. Under normal use, the main valve of the fire network is open. If a fire occurs and different locations within the same network require different water pressures (e.g., other valves require higher pressure for spraying further or with a faster flow), the main valve's water pressure increases. The pressure switches at other valves or pipelines that do not require increased pressure sense this and close the corresponding valves. This prevents bursting or damage due to prolonged use. However, some valves that still require use cannot be opened after closing. During installation, to ensure valve lifespan and safety, the pressure switches are typically rated... The value will be lower than the maximum critical point that the pipe or valve can withstand, to avoid the internal water pressure being kept at the maximum critical point, which would cause excessive load and damage during long-term use. A microswitch 5 for controlling the deluge valve is installed inside the outer casing 2. The outer casing 1 and outer casing 2 are threaded together, and the outer casing 2 is embedded in the outer casing 1. A pressing member 6 is installed inside the outer casing 1, embedded in the outer casing 2 and abutting against the microswitch 5. A squeezing member 7 for pushing the pressing member 6 upwards is slidably connected at the inlet 4 of the outer casing 1. A moving block 8 for accommodating the pressing member 6 is installed inside the outer casing 2. An abutting part 9 abuts against the moving block 8 is provided on the outer casing 2. A support block 10 is threadedly connected to the bottom of the pressing member 6 at the outer casing 1. A support block 10 is provided between the support block 10 and the moving block 8 for supporting the pressing member 6. The spring 11 of the pressure component 6 and the support block 10, and the wiring on the micro switch 5 pass through the top of the outer shell 2. A rotating component 12 is rotatably connected to the outer shell 1. The outer ring of the rotating component 12 has an arc groove 13. A pushing component 15 that moves relative to the outer shell 2 is provided at the outer shell 2. The pushing component 15 is connected to the outer shell 1 through the bracket 28. A cylinder 14 that pushes the pushing component 15 downward is fixedly installed on the bracket 28. The pushing component 15 has a protrusion 16 that is embedded in the arc groove 13 and pushes the rotating component 12 to rotate. The outer shell 2 rotates through the rotating component 12. Therefore, this product is used to install at the front end of various water pipes or valves in the fire protection network. Before installation, the switch should be adjusted to a lower value according to the maximum water pressure that different types of valves can withstand, so that the switch... The sensing factor is below the maximum withstand pressure. For example, if a deluge valve can withstand a water pressure of 10 MPa, then the setting is 7 MPa to ensure it remains below the maximum value. Therefore, under normal use, as soon as the pressure reaches 7 MPa, the corresponding valve will automatically close, preventing the water pipe or valve from operating under excessive load and shortening its lifespan. In special circumstances such as fire or emergency water use, the main valve will be opened. If individual sections require increased pressure due to insufficient water supply, the pressure gauge 17 will monitor the main valve's output pressure in real time and send a signal to the control terminal. The control terminal will then open the pressure switch controllers 18 at several valves that need to maintain water flow, thereby increasing the pressure reading on the pressure gauge 17.While the output signal is monitored at the control terminal, the controller 18 of the pressure switch cylinder 14 is controlled, causing the cylinder 14 to open, pressurize, and push the piston of the cylinder 14 to move outward. At the same time, it drives the pusher 15 and the protrusion 16 to move downward, so that the protrusion 16 is embedded in the arc groove 13 of the rotating member 12. At the same time, the protrusion 16 and the inner wall of the arc groove 13 push the rotating member 12 to rotate, so that the rotating member 12 drives the upper and lower slidingly connected outer shell 2 to rotate. The outer shell 2 rotates and moves downward along the meshing thread and is embedded between the sleeve 19 and the outer shell 1. At the same time, the moving block 8 is pushed downward through the abutment part 9, so that the spring 11 between the moving block 8 and the support block 10 is compressed. At this time, the spring 11 is compressed, so the force required to push the bottom pressing member 7 upward by the water pressure and push the pressing member 6 upward needs to be increased. Because the abutment part 9 blocks the moving block 8, it cannot move. With the spring 11 compressed and the pressure switch moved upwards, a greater force than the original force is required to push the bottom of the pressing element 6 upwards and deform the spring 11. This increases the water pressure it can withstand. This design ensures that the pressure switch can withstand higher water pressure without easily triggering the internal microswitch 5. The corresponding valve can temporarily withstand a higher water pressure output. Under normal use, this design ensures stable water pressure. When excessive water pressure passes through, the microswitch 5 will automatically open, and other valves or pipes will be closed, reducing overload on other pipes and valves. Only in emergency use or temporary needs can this device be activated to temporarily change and increase the pressure switch's withstand value, allowing valves and pipes to temporarily withstand a high load to cope with emergency use. This also avoids prolonged overload operation, which could shorten the service life.

[0019] The pusher 15 is connected to the piston rod of the cylinder 14. The pusher 15 has several protrusions 16. The number of arc-shaped grooves 13 on the rotating part 12 corresponds to the number of protrusions 16. The arc-shaped grooves 13 are arranged from high to low, and the lowest point of each arc-shaped groove 13 is aligned with the highest point of the adjacent arc-shaped groove 13. A water pressure gauge 17 is installed at the main valve of the fire water pipe 3. The water pressure gauge 17 has a signal sensor. The cylinder 14 has a controller 18 for receiving sensor signals. A sleeve is provided inside the outer casing 1 to support and abut against the moving block 8. 19. A control button 20 is provided on the sleeve 19 to control the cylinder 14 to stop. When the main end opens the valve or pipeline pressure switch controller 18 that needs to be opened and maintained, ensuring that the controller 18 can receive the signal from the pressure gauge, the main water pressure increases. The pressure gauge changes and outputs a signal that the cylinder 14 controller 18 receives and opens, causing the piston rod to move and push the pusher 15, causing multiple protrusions 16 to move down simultaneously. The first protrusion 16 first embeds into the arc-shaped groove 13 of the rotating part 12. At the same time, the rotating part 12 rotates, etc. When the first protrusion 16 moves to the bottom of the first arc-shaped groove 13, the second protrusion 16 arrives at the rotating member 12 and is opposite to the top of the next arc-shaped groove 13. As it continues to move downwards, the first protrusion 16 disengages from the first arc-shaped groove 13, while the second protrusion 16 embeds into the top of the second arc-shaped groove 13. This ensures continuous pushing and rotation of the rotating member 12. This configuration guarantees the continuous rotation of the rotating member 12, causing the outer casing 2 to move downwards, pushing the moving block 8 against the sleeve 19 and then against the control button 20. This causes the control cylinder 14 to stop inflating, thus stopping the push. At the same time, the spring 11 is compressed and the distance between the moving block 8 and the bottom of the pressing member 6 is shortened. The moving block 8 cannot move upward, while the pressing member 6 can move upward. Due to the obstruction of the spring 11, the bottom pressing member 7 is impacted by the water pressure and pushes the pressing member 6 upward. The force applied will be greater than the initial state. It is equivalent to the water pressure increasing to a level sufficient to overcome the elastic force of the spring 11 before the pressure switch can be triggered to control the valve or water pipe to close. This is equivalent to the water pipe and valve being able to withstand greater water pressure entering. Finally, through the above settings, under normal use as exemplified, setting the pressure switch below the maximum pressure limit and the internal water pressure below the pressure-bearing limit reduces and mitigates material fatigue, lowering the risk of water pipe and valve bursting. Being below the maximum pressure value is relatively safer, and maintaining an acceptable continuous working pressure range effectively extends pipeline life and reduces the probability of failure. Furthermore, through automatic adjustment of the pressure switch, in emergency situations or firefighting events, the pressure switch's pressure value can be temporarily increased, allowing pipelines and valves to temporarily operate under maximum limit conditions to cope with unexpected situations. This contrasts with existing technologies that constantly maintain maximum or minimum pressure, potentially causing other valves and pipelines to automatically shut off when a pressurization is needed. This application is more practical and better addresses different situations and problems, exhibiting greater adaptability.

[0020] The bottom of the movable block 8 is provided with a pull rope 21, which extends downward and passes through the sleeve 19 and the outer shell 1. The outer shell 1 and the sleeve 19 are provided with guide wheels 22 for guiding the movement of the pull rope 21. The bottom of the bracket 28 is provided with a winding assembly for winding the pull rope 21. The winding assembly includes a winding wheel 23 rotatably connected to the bracket 28. The bracket 28 is provided with a high-elasticity torsion spring 24 for pushing the winding wheel 23 to rotate. The elastic force of the torsion spring 24 is greater than the weight of the movable block 8 and the elastic force of the spring 11. A limiting rod 25 for limiting the rotation of the winding wheel 23 is slidably connected to the bracket 28. The limiting rod 25 passes through the winding wheel 23. The limiting rod 25 is provided with a limiting block 26 for embedding into the winding wheel 23. The winding wheel 23 is provided with The limiting groove 35, which accommodates the limiting block 26 and is used to limit the winding wheel 23, is provided in the bracket 28. The groove 27 is provided to accommodate the pusher 15. The top of the limiting rod 25 abuts against the lowered pusher 15. The limiting rod 25 is divided into upper and lower sections, with the lower section having a smaller diameter than the upper section. The distance between the pusher 15 and the bottom of the bracket 28 is greater than the distance the outer shell 2 moves downward. Furthermore, if, after prolonged use, the inner outer shell 1 and outer shell 2 become unstable or slip due to weathering or corrosion, preventing proper meshing and transmission, the cylinder 14 will drive the pusher 15 downward, causing the protrusion 16 to embed into the rotating member 12 and push the rotating member 12 to rotate, causing the outer shell 2 to rotate synchronously. However, due to the outer shell... Unable to descend through the thread, the second 2 rotates idly and cannot move the moving block 8 downwards. The cylinder 14, receiving a signal from the increased pressure gauge, opens its piston rod, causing the pushing component 15 to continue moving downwards. Because the control button 20 is not pressed against the moving block 8, the cylinder 14 does not stop, causing the pushing component 15 to move to the bottom of the bracket 28, where it abuts against the limiting rod 25 extending from the bracket 28. This presses the limiting rod 25 downwards, causing it to move along the limiting groove 35 of the rotating wheel, disengaging the limiting block 26 from the limiting groove 35. This removes the restriction on the winding wheel 23. The sleeve 32 at the bottom of the winding wheel 23 is pushed to rotate by the highly elastic torsion spring 24, simultaneously winding up the connected pull rope 21, causing the pull rope 21 to be wound up and pulled. Simultaneously, the moving block 8 is pulled downwards, compressing the spring 11. At the same time, the limit rod 25 moves downwards, compressing the bottom spring 29. When the pull rope 21 is pulled, it moves along the guide wheel 22. The guide wheel 22 reduces friction and saves pulling force, thus compressing the spring 11. Since the torsion spring 24 has a greater elastic force than the moving block 8 and the spring 11, it can be ensured that, like the blocking force of the abutment part 9, when the pressing part 6 needs to move upwards, it also needs a greater than normal water pressure to push the squeezing part 7 upwards. This setting ensures that even if the connection between the outer shell 22 and the outer shell 11 is worn and cannot move downwards, the moving block 8 can still slide under the drive of the cylinder 14 to achieve the compression effect, thus achieving the same effect of adjusting the pressure of the switch.

[0021] A spring 29 is provided between the limiting rod 25 and the bracket 28 to push the limiting rod 25 back to its original position. A connecting rope 30 is provided at the bottom of the pushing member 15, which is connected to the winding wheel 23 and pulls the winding wheel 23 back to its original position. The pull rope 21 and the connecting rope 30 are staggered vertically during winding. The winding wheel 23 is provided with a separating ring 31 that separates the connecting rope 30 from the pull rope 21. The winding wheel 23 is divided into upper and lower parts by the separating ring 31. The lower part is connected to the pull rope 21, and the upper part is connected to the connecting rope 30. Under normal conditions, the connecting rope 30 between the pushing member 15 and the winding wheel 23 is taut. When the pushing member 15 moves downward, the connecting rope 30 becomes slack. Furthermore, when the limiting position of the winding wheel 23 is released, the connecting rope 30 is also wound up. Therefore, when resetting is required... By moving the pusher 15 upward, the winding connecting rope 30 can be pulled, causing the winding wheel 23 to reset, compressing the torsion spring 24 again, and slackening the pull rope 21, thus removing the tension applied to the pull rope 21. As a result, the spring 11 can push the moving block 8 upward to reset, and drive the pull rope 21 to reset again. The separator ring 31 can separate the pull rope 21 and the connecting rope 30 to prevent them from getting tangled and knotted. After the winding wheel 23 is pulled and reset, the limiting groove 1 35 and the limiting block 26 will be aligned again. Then, the spring 29 can push the limiting rod 25 outward to reset again, and the limiting rod 25 will limit the winding wheel 23 again. Through the above settings, it is ensured that after driving, it can automatically reset for subsequent reuse.

[0022] The bottom of the take-up reel 23 is provided with a second sleeve 32, which is fixedly connected to the take-up reel 23 and is sleeved on the outside of the bracket 28. A torsion spring 24 is located between the second sleeve 32 and the bracket 28 and is connected to the second sleeve 32. The bracket 28 is slidably connected to a plug 33 for limiting the limiting rod 25 inside the second sleeve 32. The limiting rod 25 is provided with a limiting groove 34 for accommodating the insertion plug 33. A compression spring 36 is provided between the insertion plug 33 and the bracket 28, and the limiting groove... The limiting groove 34 and the plug-in 33 are misaligned. After the limiting groove 34 moves down, it is opposite to the plug-in 33. The part of the plug-in 33 that is inserted into the limiting groove 34 is ball-shaped. When the limiting rod 25 is pushed down by the pusher 15, the limiting groove 34 will also move down, and the limiting groove 34 and the plug-in 33 will be misaligned. After moving to the point where the limiting groove 34 is opposite to the plug-in 33, the compression spring 36 will pop out and push the plug-in 33 into the limiting groove 34, thereby limiting the limiting rod 25. This ensures that when the take-up reel 23 rotates, if the limiting block 26 is aligned with the limiting groove 35, the spring 29 will not push the limiting rod 25 back into the limiting position. This is especially important during reset, as it limits the limiting rod 25, ensuring that after the take-up reel 23 resets, the limiting block 26 of the limiting rod 25 is aligned with the limiting groove 35. Furthermore, the insert 33 is equipped with a traction rope 38, the other end of which is connected to the top of the limiting rod 25. When the piston rod moves upward to reset, and the pushing member 15 moves upward synchronously, the spring 29 will push the limiting rod 25 back into the limiting position. The traction rope 38 on the moving part 15 will also be pulled and taut simultaneously. After tautness, the traction rope 38 can pull the limit rod 25 upward. The pulling force is greater than the elastic force of the compression spring 36. Through the ball-shaped plug 33, the plug 33 is pushed inward along the arc surface, disengaging from the second limit groove 34, and causing the limit block 26 of the limit rod 25 to re-embed into the first limit groove 35, limiting the winding wheel 23. At the same time, the traction rope 38 waits for the winding wheel 23 to reset before tightening and pulling the limit rod 25 to move.

[0023] The abutment part 9 is slidably connected to the outer shell 2. A retaining block 37 is slidably connected to the outer shell 2, penetrating the outer shell 2 and abutting against the abutment part 9. The outer shell 2 is surrounded by a steel sleeve 39 for blocking and pushing the retaining block 37 against the abutment part 9, and the steel sleeve 39 is fixed by bolts. Conversely, if the outer shell 2 and the outer shell 1 are engaged and maintained in the engaged state, and the limiting position is not released for a long time, when reset is required, jamming, stripping, and corrosion may occur due to the engagement or use. If the problem arises, then it is necessary to release or reduce the maximum pressure of the pressure switch. At this time, the bolts and nuts of the steel sleeve 39 can be manually removed, and the steel sleeve 39 can be removed at the same time. Then, the sliding connection clamping block 37 can be pulled out and removed to release the clamping and restriction on the abutment part 9. As a result, the abutment part 9 can slide upward, thus ensuring that the outer shell 2 remains stationary while the abutment part 9 moves. This allows the moving block 8 to push the abutment part 9 upward, thereby causing the spring 11 to reset. The spring 11 can be deformed under a small pressure when it resets.

[0024] It will be apparent to those skilled in the art that the present 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 its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable deluge valve pressure switch, comprising a first housing (1) and a second housing (2), wherein the bottom of the first housing (1) is connected to a fire water pipe (3) connected to a valve, and the bottom of the first housing (1) is provided with an inlet (4) connected to the fire water pipe (3), and the second housing (2) is provided with a micro switch (5) for controlling the deluge valve, the first housing (1) and the second housing (2) are threaded together, and the second housing (2) is embedded in the first housing (1), characterized in that: The outer shell 1 (1) is provided with a pressing member (6) embedded in the outer shell 2 (2) and abutting against the micro switch (5). The outer shell 2 (2) is provided with a moving block (8) that accommodates the pressing member (6) to pass through. The bottom of the pressing member (6) is threadedly connected to a support block (10) at the outer shell 1 (1). A spring 1 (11) for supporting the pressing member (6) and the support block (10) is provided between the support block (10) and the moving block (8). A rotating member (12) is rotatably connected to the outer shell 1 (1). The outer ring of the rotating member (12) is provided with an arc groove (13). The outer shell 2 (2) is provided with a pushing member (15) that moves relative to the outer shell 2 (2). The pushing member (15) is provided with a protrusion (16) embedded in the arc groove (13) and pushing the rotating member (12) to rotate. The outer shell 2 (2) is driven to rotate by the rotating member (12).

2. The adjustable deluge valve pressure switch according to claim 1, characterized in that: The outer shell (1) is slidably connected to the inlet (4) with a pressing member (7) for pushing the pressing member (6) upward. The pushing member (15) is connected to the outer shell (1) through the bracket (28). The bracket (28) is fixedly provided with a cylinder (14) for pushing the pushing member (15) downward. The outer shell (2) is provided with a contact part (9) for abutting the moving block (8). The pushing member (15) is connected to the piston rod of the cylinder (14). The pushing member (15) has several protrusions (16). The number of arc grooves (13) provided on the rotating member (12) is opposite to the number of protrusions (16). The arc grooves (13) are arranged from high to low, and the lowest point of the arc groove (13) is on the same straight line as the highest point of the adjacent arc groove (13).

3. The adjustable deluge valve pressure switch according to claim 2, characterized in that: The fire water pipe (3) is equipped with a water pressure gauge (17) at the front end of the main valve. The water pressure gauge (17) is equipped with a signal sensor, and the cylinder (14) is equipped with a controller (18) for receiving the sensor signal.

4. The adjustable deluge valve pressure switch according to claim 2, characterized in that: The outer casing (1) is provided with a sleeve (19) for support and abutting against the moving block (8). The wiring on the micro switch (5) extends out along the top of the outer casing (2). The sleeve (19) is provided with a control button (20) for controlling the cylinder (14) to stop.

5. The adjustable deluge valve pressure switch according to claim 4, characterized in that: The bottom of the movable block (8) is provided with a pull rope (21), which extends downward and passes through the sleeve (19) and the outer shell (1). The outer shell (1) and the sleeve (19) are provided with guide wheels (22) for guiding the movement of the pull rope (21). The bottom of the bracket (28) is provided with a winding assembly for winding and pulling the pull rope (21).

6. The adjustable deluge valve pressure switch according to claim 5, characterized in that: The winding assembly includes a winding wheel (23) rotatably connected to a bracket (28). A highly elastic torsion spring (24) is provided inside the bracket (28) to drive the winding wheel (23) to rotate. The elastic force of the torsion spring (24) is greater than the weight of the moving block (8) and the elastic force of spring 1 (11). A limiting rod (25) for restricting the rotation of the winding wheel (23) is slidably connected to the bracket (28), and the limiting rod (25) passes through the winding wheel (23). The limiting rod (25) is provided with a mechanism for embedding the winding wheel (23). 3) The limiting block (26) is provided on the winding wheel (23) to accommodate the limiting block (26) and to limit the winding wheel (23). The bracket (28) is provided with a groove (27) to accommodate the pusher (15) and to accommodate the pusher (15) after it has moved down. The limiting rod (25) is divided into upper and lower sections, and the diameter of the lower section is smaller than that of the upper section. The distance between the pusher (15) and the bottom of the bracket (28) is greater than the distance of the outer shell (2) after it has moved down.

7. The adjustable deluge valve pressure switch according to claim 6, characterized in that: A second spring (29) for pushing the limit rod (25) to reset is provided between the limit rod (25) and the bracket (28). The bottom of the pusher (15) is provided with a connecting rope (30) that is connected to the winding wheel (23) and pulls the winding wheel (23) to reset. The pull rope (21) and the connecting rope (30) are staggered in the upper and lower positions for winding. The winding wheel (23) is provided with a separating ring (31) that separates the connecting rope (30) and the pull rope (21).

8. The adjustable deluge valve pressure switch according to claim 7, characterized in that: The bottom of the take-up reel (23) is provided with a sleeve (32), which is fixedly connected to the take-up reel (23) and sleeve (32) is sleeved outside the bracket (28). The torsion spring (24) is located between the sleeve (32) and the bracket (28) and is connected to the sleeve (32). The bracket (28) is slidably connected to the sleeve (32) with a plug (33) for limiting the limiting rod (25). The limiting rod (25) is provided with a limiting groove (34) for accommodating the insertion (33). A compression spring (36) is provided between the insertion (33) and the bracket (28). The limiting groove (34) and the insertion (33) are misaligned. After the limiting groove (34) moves down, it is opposite to the insertion (33). The insertion (33) is ball-shaped when it is embedded in the limiting groove (34).

9. The adjustable deluge valve pressure switch according to claim 2, characterized in that: The abutting part (9) is slidably connected to the outer shell (2) and a pressing block (37) is slidably connected to the outer shell (2). The pressing block (37) penetrates the outer shell (2) and abuts against the abutting part (9). The outer shell (2) is wrapped with a steel sleeve (39) for blocking and pushing the pressing block (37) to press against the abutting part (9), and the steel sleeve (39) is fixed by bolts.

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