Fire pump valve with automatic closing function

Abstract

This application discloses a fire pump valve with an automatic shut-off function, relating to the field of fire pump valve technology. The application includes a connecting pipe, with a gate fixedly connected inside the connecting pipe. A gate opening is formed in the middle section of the gate. A lifting groove is formed at the top inner part of the connecting pipe, and an H-shaped plug is slidably connected inside the lifting groove. The bottom of the H-shaped plug is inserted into the gate opening, and an arched slide is symmetrically fixedly connected to the top of the H-shaped plug. A drive chamber is formed at the top of the lifting groove. When a pressure sensor detects a pressure change exceeding a threshold, the application activates a regulating motor to drive a rotating shaft, causing a contact rod to abut against the arched slide, and pushing the H-shaped plug along the length of the lifting groove into the gate opening, thereby closing the gate. This facilitates the automatic closure of the internal passage of the connecting pipe when the water pressure change exceeding a set threshold, reducing the risk of pipe rupture leading to damage to the entire fire protection system.

Description

Technical Field

[0001] This application relates to the field of fire pump valve technology, and in particular to a fire pump valve with an automatic shut-off function. Background Technology

[0002] Fire pumps are key equipment in fire protection systems, their main function being to provide a sufficient water source for firefighting during a fire. Fire pumps deliver water to firefighting equipment, such as fire hoses and sprinkler systems, through a pipeline system to effectively control and extinguish fires. However, in actual operation, fire pumps and their pipeline systems may encounter various abnormal situations, such as pipe blockages and equipment malfunctions, which can lead to a sharp increase in system pressure.

[0003] Currently, fire pump valves are typically controlled manually or with simple automatic controls. Manual control requires operators to open and close the valves at the fire scene or in the control room, which may affect firefighting efficiency in emergencies due to operational delays.

[0004] While existing technologies can address some abnormal situations that may occur during the operation of fire pumps, certain problems remain. For example, when blockages or other abnormalities occur in the piping system, the system pressure may rise sharply, potentially leading to pipe ruptures or damage to other equipment, thereby affecting the safe operation of the entire fire protection system. Utility Model Content

[0005] The purpose of this application is to address the problem that when blockages or other abnormalities occur in the pipeline system, the system pressure may rise sharply, leading to pipeline rupture or damage to other equipment, thereby affecting the safe operation of the entire fire protection system. This application provides a fire pump valve with an automatic shut-off function.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A fire pump valve with an automatic shut-off function includes a connecting pipe. A gate is fixedly connected inside the connecting pipe, with a gate opening in the middle section. A lifting groove is formed at the top inner part of the connecting pipe. An H-shaped plug is slidably connected inside the lifting groove, with its bottom inserted into the gate opening. An arched slide is symmetrically fixedly connected to the top of the H-shaped plug. A drive chamber is formed at the top of the lifting groove. A rotating shaft is rotatably connected to the top inner part of the lifting groove. A contact rod adapted to the arched slide is symmetrically fixedly connected to the bottom of the rotating shaft. One end of the rotating shaft extends into the drive chamber and is fixedly connected to a worm gear. A T-shaped insert is installed at one end of the rotating shaft, contacting the H-shaped plug. A worm gear meshing with the worm gear is rotatably connected inside the drive chamber. An adjusting motor is fixedly connected inside the drive chamber, with its output end fixedly connected to the worm gear. A pressure sensor is fixedly connected inside the connecting pipe. A reset component and a guide assembly are installed inside the lifting groove. A lifting assembly is installed between the T-shaped insert and the rotating shaft.

[0008] By adopting the above technical solution, and by setting up the reset component and the guide component in combination, when the pressure sensor detects a pressure change exceeding the threshold, the regulating motor drives the rotating shaft to move the abutment rod to abut against the arched slide, and pushes the I-beam plug to insert into the gate along the length of the lifting groove, thereby closing the gate. This facilitates the automatic closure of the internal channel of the connecting pipe when the water pressure change inside the connecting pipe exceeds the set threshold, reducing the possibility of pipe rupture causing damage to the entire fire protection system.

[0009] Furthermore, the reset component includes a reset spring sleeved on one end of the I-beam plug, the reset spring being installed between the I-beam plug and the lifting groove.

[0010] By adopting the above technical solution, and by setting the return spring in conjunction with the lifting groove and the I-beam plug, it is convenient to use the rebound deformation of the return spring to push the I-beam plug to automatically reset along the length direction of the lifting groove when the drive shaft drives the contact rod to release the contact with the arched slide. This effectively improves the practicality of the device.

[0011] Furthermore, the guiding component includes guide sliders symmetrically fixedly connected to one end of the I-beam plug, and guide grooves adapted to the guide sliders are symmetrically opened on the inner side of the lifting groove.

[0012] By adopting the above technical solution and using the guide slider and guide groove in combination, the arched slide table is guided to move along the length of the guide groove when it is resisted by the abutment rod, thus improving the practicality of the device.

[0013] Furthermore, a sealing rubber sleeve is fixedly connected to one end of the I-shaped plug, and the other end of the sealing rubber sleeve is fixedly connected to the connecting pipe.

[0014] By adopting the above technical solution, and by setting up the cooperation between the sealing rubber sleeve and the H-shaped plug, the sealing rubber sleeve can wrap around the connection end of the connecting pipe and the H-shaped plug, effectively improving the sealing performance between the sealing rubber sleeve and the H-shaped plug.

[0015] Furthermore, the bottom of the abutment rod is ball-hinged with an abutment ball, which rolls and abuts against the arched slide.

[0016] By adopting the above technical solution, and by setting the contact ball and the contact rod and the arched slide to work together, the contact rod forms a rolling contact with the arched slide through the contact ball, which effectively reduces the wear between the contact rod and the arched slide and extends the service life of the device.

[0017] Furthermore, a storage slot is provided on the top of the drive compartment, and an abutment block is slidably connected inside the storage slot. A lifting screw is fixedly connected to the top of the abutment block. One end of the lifting screw passes through the connecting pipe and is threadedly connected to the connecting pipe. A handle is fixedly connected to the end of the lifting screw that passes through the connecting pipe.

[0018] By adopting the above technical solution, and by setting up the lifting screw, the contact block, and the T-shaped plug to work together, it is easy to turn the handle to drive the lifting screw to form a threaded connection with the connecting pipe, and push the contact block to squeeze the T-shaped plug and the I-shaped plug to form a contact. At the same time, push the I-shaped plug to insert into the interior of the gate along the length of the lifting groove to complete the closure, thus improving the applicability of the device.

[0019] Furthermore, the lifting assembly includes a limiting slider symmetrically fixedly connected to one end of the T-shaped plug rod, and both the T-shaped plug rod and the rotating shaft are symmetrically provided with limiting grooves adapted to the limiting slider.

[0020] By adopting the above technical solution, and by setting the limit slider and the limit groove to work together, it is easy to guide the lifting direction of the T-shaped plug and reduce the wear between the T-shaped plug and the H-shaped plug.

[0021] Furthermore, a color-developing ring is fixedly sleeved on one end of the T-shaped insert, and a display port adapted to the color-developing ring is opened on the inner side of the storage groove.

[0022] By adopting the above technical solution and using the color ring and display port in combination, it is easy to observe whether the I-beam plug is inserted into the gate, thus improving the practicality of the device.

[0023] In summary, this application includes at least one of the following beneficial effects:

[0024] 1. By using the reset component and guide assembly together, when the pressure sensor detects a pressure change exceeding the threshold, the regulating motor drives the rotating shaft to engage the contact rod with the arched slide, pushing the I-beam plug along the length of the lifting groove into the gate, thereby closing the gate. This facilitates the automatic closure of the internal passage of the connecting pipe when the water pressure change exceeds the set threshold, reducing the risk of pipe rupture causing damage to the entire fire protection system.

[0025] 2. By setting up the lifting screw in conjunction with the contact block and the T-shaped plug, it is easy to turn the handle to drive the lifting screw to form a threaded connection with the connecting pipe, and push the contact block to squeeze the T-shaped plug to form a contact with the I-shaped plug. At the same time, the I-shaped plug is pushed to insert into the interior of the gate along the length of the lifting groove to complete the closure, thus improving the applicability of the device. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the main body of the device in this application.

[0027] Figure 2 This is a side sectional view of the main body of the device in this application.

[0028] Figure 3 This is an exploded view of the internal structure of the connecting pipe in this application.

[0029] Figure 4 This is an exploded view of the internal structure of the rotating shaft in this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Connecting pipe; 2. Gate platform; 3. Gate opening; 4. Lifting groove; 5. I-beam plug; 6. Arched slide; 7. Drive chamber; 8. Rotating shaft; 9. Abutment rod; 10. Worm gear; 11. Worm; 12. Adjusting motor; 13. Pressure sensor; 14. Return spring; 15. Guide slider; 16. Guide groove; 17. Sealing rubber sleeve; 18. Abutment ball; 19. Storage groove; 20. Abutment block; 21. Lifting screw; 22. Handle; 23. T-shaped insert rod; 24. Limit slider; 25. Limit groove; 26. Color display ring; 27. Display port. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a fire pump valve with an automatic shut-off function.

[0034] Reference Figures 1-3A fire pump valve with an automatic shut-off function includes a connecting pipe 1, a gate 2 fixedly connected inside the connecting pipe 1, a gate opening 3 in the middle section of the gate 2, a lifting groove 4 in the inner top of the connecting pipe 1, an I-beam plug 5 slidably connected inside the lifting groove 4, the bottom of the I-beam plug 5 inserted into the gate opening 3, an arched slide 6 symmetrically fixedly connected to the top of the I-beam plug 5, a drive chamber 7 in the top of the lifting groove 4, a rotating shaft 8 rotatably connected to the inner top of the lifting groove 4, and a drive chamber 7 symmetrically fixedly connected to the bottom of the rotating shaft 8. The contact rod 9 of the platform 6 is adapted to extend one end of the rotating shaft 8 into the drive chamber 7 and is fixedly connected to the worm gear 10. One end of the rotating shaft 8 is equipped with a T-shaped plug 23 that abuts against the H-shaped plug 5. The drive chamber 7 is rotatably connected to the worm gear 11 that meshes with the worm gear 10. The drive chamber 7 is fixedly connected to the adjustment motor 12. The output end of the adjustment motor 12 is fixedly connected to the worm gear 11. The connection tube 1 is fixedly connected to the pressure sensor 13. The lifting groove 4 is equipped with a reset component. The lifting groove 4 is equipped with a guide component. The T-shaped plug 23 and the rotating shaft 8 are equipped with a lifting component.

[0035] The reset component includes a reset spring 14 sleeved on one end of the I-beam plug 5, and the reset spring 14 is installed between the I-beam plug 5 and the lifting groove 4.

[0036] Furthermore, the guide assembly includes a guide slider 15 symmetrically fixedly connected to one end of the I-beam plug 5, and a guide groove 16 adapted to the guide slider 15 is symmetrically opened on the inner side of the lifting groove 4.

[0037] Furthermore, a sealing rubber sleeve 17 is fixedly connected to one end of the I-beam plug 5, and the other end of the sealing rubber sleeve 17 is fixedly connected to the connecting pipe 1.

[0038] Furthermore, the bottom of the abutment rod 9 is ball-hinged with an abutment ball 18, which rolls and abuts against the arched slide table 6.

[0039] In use, when the pressure sensor 13 senses that the pressure change of the water flow inside the connecting pipe 1 exceeds the set threshold, the pressure sensor 13 starts the regulating motor 12 to drive the worm gear 11 to rotate, and drives the worm gear 11 to mesh with the worm wheel 10. This causes the worm wheel 10 to drive the rotating shaft 8 and the contact rod 9 to rotate. At the same time, the contact rod 9 drives the contact ball 18 to form contact with the arched slide 6 and slide along the surface of the arched slide 6. This pushes the arched slide 6 to drive the I-beam plug 5 to compress the return spring 14 along the length of the lifting groove 4, causing it to contract and deform. This pushes the I-beam plug 5 to insert into the gate 3 along the length of the lifting groove 4, thus shielding the gate 3. This facilitates the automatic closure of the internal passage of the connecting pipe 1 when the pressure change of the water flow inside the connecting pipe 1 exceeds the set threshold, reducing the possibility of pipe rupture causing damage to the entire fire protection system.

[0040] Similarly, when the reverse start regulating motor 12 drives the rotating shaft 8 to move the contact rod 9 along the top of the arched slide 6 to the lowest point, the return spring 14 rebounds and pushes out the I-beam plug 5, and pushes the I-beam plug 5 along the length of the lifting groove 4 to release the closure of the gate 3. When the I-beam plug 5 moves along the length of the lifting groove 4, one end of the I-beam plug 5, together with the connecting pipe 1, pulls the sealing rubber sleeve 17 to deform, and the sealing rubber sleeve 17 seals the gap between the connecting pipe 1 and the I-beam plug 5, effectively improving the sealing performance between the connecting pipe 1 and the I-beam plug 5, and reducing the possibility of water flowing into the lifting groove 4 and affecting the service life of the device.

[0041] Reference Figures 2-4 The top of the drive compartment 7 is provided with a storage slot 19. A contact block 20 is slidably connected inside the storage slot 19. A lifting screw 21 is fixedly connected to the top of the contact block 20. One end of the lifting screw 21 passes through the connecting pipe 1 and is threadedly connected to the connecting pipe 1. A handle 22 is fixedly connected to the end of the lifting screw 21 that passes through the connecting pipe 1.

[0042] The lifting assembly includes a limiting slider 24 symmetrically fixedly connected to one end of the T-shaped plug 23. The T-shaped plug 23 and the rotating shaft 8 are both symmetrically provided with limiting grooves 25 that are adapted to the limiting slider 24.

[0043] When in use, if the adjusting motor 12 is damaged and cannot drive the I-beam plug 5 to be inserted into the gate 3, the lifting screw 21 is threadedly connected to the connecting pipe 1 by manually turning the handle 22, and the abutment block 20 is pushed downward along the length of the receiving groove 19. At the same time, the abutment block 20 is made to abut against the T-shaped insert 23, and the T-shaped insert 23 is pushed downward along the guide direction of the limiting slider 24 to push the I-beam plug 5. At the same time, one end of the I-beam plug 5 compresses the reset spring 14 to generate a contraction deformation and is inserted into the gate 3. This makes it easy to achieve closure by manually pushing the I-beam plug 5 into the gate 3, which further improves the practicality of the device.

[0044] Reference Figures 1-3 One end of the T-shaped insert 23 is fixedly fitted with a color-developing ring 26, and the inner side of the storage slot 19 is provided with a display port 27 that is compatible with the color-developing ring 26.

[0045] When in use, when one end of the I-beam plug 5 is inserted into the interior of the gate 3, the I-beam plug 5 moves downward along the length of the lifting groove 4. At the same time, the T-shaped insert 23 drives the color display ring 26 to move downward along the length of the limiting slider 24. This causes the T-shaped insert 23 to move the color display ring 26 to a position aligned with the display port 27, so that people can observe the color display ring 26 through the display port 27 to determine whether the I-beam plug 5 has been inserted into the interior of the gate 3 to complete the closure, thus improving the practicality of the device.

[0046] The implementation principle of a fire pump valve with automatic shut-off function in this embodiment is as follows: First, when the pressure sensor 13 senses that the pressure change of the water flow inside the connecting pipe 1 exceeds the set threshold, the pressure sensor 13 starts the regulating motor 12 to drive the worm gear 11 to rotate, and drives the worm gear 11 to mesh with the worm wheel 10, thereby causing the worm wheel 10 to drive the rotating shaft 8 and the contact rod 9 to rotate. At the same time, the contact rod 9 drives the contact ball 18 to form contact with the arched slide 6 and slide along the surface of the arched slide 6. At the same time, the arched slide 6 pushes the I-beam plug 5 to squeeze the return spring 14 along the length direction of the lifting groove 4 to produce a contraction deformation. At the same time, the I-beam plug 5 is pushed to insert into the gate 3 along the length direction of the lifting groove 4, thereby making the I-beam plug 5 shield the gate 3.

[0047] Similarly, when the reverse start adjustment motor 12 drives the rotating shaft 8 to move the contact rod 9 along the top of the arched slide table 6 to the lowest point, the return spring 14 rebounds and pushes out the I-beam plug 5, and pushes the I-beam plug 5 along the length of the lifting groove 4 to release the closure of the gate 3. When the I-beam plug 5 moves along the length of the lifting groove 4, one end of the I-beam plug 5 cooperates with the connecting pipe 1 to pull the sealing rubber sleeve 17 to deform, and the sealing rubber sleeve 17 seals the gap between the connecting pipe 1 and the I-beam plug 5.

[0048] Then, when the regulating motor 12 is damaged and cannot drive the I-beam plug 5 to be inserted into the gate 3, the lifting screw 21 is threadedly connected to the connecting pipe 1 by manually turning the handle 22, and the abutment block 20 is pushed down along the length of the receiving groove 19. At the same time, the abutment block 20 is made to abut against the T-shaped insert 23, and the T-shaped insert 23 is pushed down along the guide direction of the limit slider 24 to push the I-beam plug 5. At the same time, one end of the I-beam plug 5 squeezes the reset spring 14 to generate a contraction deformation and is inserted into the gate 3.

Claims

1. A fire pump valve with an automatic shut-off function, comprising a connecting pipe (1), characterized in that: A gate platform (2) is fixedly connected inside the connecting pipe (1). A gate opening (3) is provided in the middle section of the gate platform (2). A lifting groove (4) is provided at the top inside the connecting pipe (1). An I-beam plug (5) is slidably connected inside the lifting groove (4). The bottom of the I-beam plug (5) is inserted into the gate opening (3). An arched slide (6) is symmetrically fixedly connected to the top of the I-beam plug (5). A drive chamber (7) is provided at the top of the lifting groove (4). A rotating shaft (8) is rotatably connected to the top inside the lifting groove (4). A contact rod (9) adapted to the arched slide (6) is symmetrically fixedly connected to the bottom of the rotating shaft (8). One end of the rotating shaft (8) extends into the drive chamber (7) and is fixedly connected to a worm gear (10). One end of the rotating shaft (8) is equipped with a T-shaped plug (23) that abuts against the H-shaped plug (5). The drive chamber (7) is rotatably connected to a worm (11) that meshes with the worm gear (10). The drive chamber (7) is fixedly connected to an adjusting motor (12). The output end of the adjusting motor (12) is fixedly connected to the worm (11). The connecting pipe (1) is fixedly connected to a pressure sensor (13). The lifting groove (4) is equipped with a reset component. The lifting groove (4) is equipped with a guide component. The T-shaped plug (23) and the rotating shaft (8) are equipped with a lifting component.

2. A fire pump valve with automatic shut-off function according to claim 1, characterized in that: The reset component includes a reset spring (14) sleeved on one end of the I-beam plug (5), and the reset spring (14) is installed between the I-beam plug (5) and the lifting groove (4).

3. A fire pump valve with automatic shut-off function according to claim 1, characterized in that: The guiding component includes a guide slider (15) symmetrically fixedly connected to one end of the I-beam plug (5), and the inner side of the lifting groove (4) is symmetrically provided with guide grooves (16) adapted to the guide slider (15).

4. A fire pump valve with automatic shut-off function according to claim 1, characterized in that: One end of the I-shaped plug (5) is fixedly connected to a sealing rubber sleeve (17), and the other end of the sealing rubber sleeve (17) is fixedly connected to the connecting pipe (1).

5. A fire pump valve with automatic shut-off function according to claim 1, characterized in that: The bottom of the abutment rod (9) is ball-hinged with an abutment ball (18), which rolls and abuts against the arched slide (6).

6. A fire pump valve with automatic shut-off function according to claim 1, characterized in that: The top of the drive compartment (7) is provided with a storage slot (19), and a contact block (20) is slidably connected inside the storage slot (19). A lifting screw (21) is fixedly connected to the top of the contact block (20). One end of the lifting screw (21) passes through the connecting pipe (1) and is threadedly connected to the connecting pipe (1). A handle (22) is fixedly connected to one end of the lifting screw (21) that passes through the connecting pipe (1).

7. A fire pump valve with automatic shut-off function according to claim 1, characterized in that: The lifting assembly includes a limiting slider (24) symmetrically fixedly connected to one end of the T-shaped plug (23). The T-shaped plug (23) and the rotating shaft (8) are both symmetrically provided with limiting grooves (25) that are adapted to the limiting slider (24).

8. A fire pump valve with automatic shut-off function according to claim 6, characterized in that: One end of the T-shaped insert (23) is fixedly fitted with a color-displaying ring (26), and the inner side of the storage slot (19) is provided with a display port (27) that is compatible with the color-displaying ring (26).

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