Rotary pressure reduction type indoor fire hydrant

Abstract

The utility model discloses a rotary decompression type indoor fire hydrant which comprises a connecting column and a fire hydrant body, the connecting column is arranged at the upper end of the interior of the fire hydrant body, a rotating rod is arranged at the upper end of the interior of the connecting column, a hand wheel is fixed to the upper end of the rotating rod, a supporting block is arranged at one end of the hand wheel, a supporting block is arranged at the lower end of the supporting block, and connecting rods are hinged to the two ends of the supporting block. The middles of the connecting rods are hinged to the front ends of the supporting blocks, clamping blocks are arranged at the lower ends of the connecting rods, springs are connected between the side portions of the clamping blocks and the bottoms of the supporting blocks, connecting belts are connected between the clamping blocks, a water guiding bin is arranged in the fire hydrant, connectors are arranged at the two ends of the water guiding bin, and a ball valve is arranged in the water guiding bin. The upper end of the ball valve is fixedly connected with the lower end of the connecting column. The utility model has the advantages of good practicability and good stability.

Description

Technical Field

[0001] This utility model relates to the field of fire hydrant technology, specifically a rotary pressure-reducing indoor fire hydrant. Background Technology

[0002] Indoor fire hydrants are facilities that supply water to fire scenes from indoor pipe networks. They are used in factories, warehouses, high-rise buildings, public places, and ships for fire-fighting water supply. They are usually installed in fire hydrant boxes and used in conjunction with fire hoses, nozzles, and other equipment. When a fire alarm is triggered, the fire hydrant box is quickly opened, the fire hose and nozzle are taken out, one end of the fire hose is connected to the fire hydrant's fire interface, and the other end can be connected to the nozzle. Then, the fire hydrant handwheel is turned to open, and water can be sprayed to extinguish the fire. Therefore, pressure-reducing indoor fire hydrants play an important role.

[0003] Existing fire hydrants have some drawbacks. First, they are inconvenient to switch between using fire hoses and nozzles selectively, resulting in poor practicality. Second, they are not stable, which affects their service life. Utility Model Content

[0004] The purpose of this invention is to provide a rotary pressure-reducing indoor fire hydrant to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rotary pressure-reducing indoor fire hydrant, comprising a connecting column and a fire hydrant. The connecting column is located at the upper end of the fire hydrant's interior. A rotating rod is located at the upper end of the connecting column's interior, and a handwheel is fixed to the upper end of the rotating rod. A support block is located at one end of the handwheel, and a support block is located at the lower end of the support block. Connecting rods are hinged to both ends of the support block, and the middle of each connecting rod is hinged to the front end of the support block. A locking block is located at the lower end of the connecting rod, and a spring is connected between the side of the locking block and the bottom of the support block. A connecting strap connects the locking blocks.

[0006] Preferably, the fire hydrant has a water guiding chamber inside, and both ends of the water guiding chamber are provided with interfaces. The inner wall of the fire hydrant is provided with a sealing ring corresponding to the upper end of the water guiding chamber.

[0007] Preferably, a ball valve is installed inside the water guiding chamber, and the upper end of the ball valve is fixedly connected to the lower end of the connecting column.

[0008] Preferably, the ball valve has a flow guide groove at its internal corresponding interface, and the water guide chamber has annular guide grooves at both the upper and lower ends.

[0009] Preferably, the ball valve is provided with guide blocks at both the upper and lower ends, and the guide blocks are slidably connected to the annular guide groove.

[0010] Preferably, both ends of the inner wall of the connecting column are provided with slide rails, and the lower end of the rotating rod is provided with a slider, which is slidably connected to the slide rails.

[0011] Preferably, the lower end of the water guide chamber is connected to a water inlet pipe, and a solenoid valve is provided at the front end of the fire hydrant corresponding to the water inlet pipe.

[0012] Preferably, the upper end of the fire hydrant is provided with an annular slot, and the interior of the annular slot engages with the locking block.

[0013] Compared with the prior art, the advantages of this utility model are: good practicality and good stability;

[0014] (1) Water can be introduced into the water guide chamber through the inlet pipe by switching the solenoid valve. Then, the upper end of the connecting rod can be pulled to bring the upper ends of the connecting rods closer together, which will cause the locking blocks to move closer together. As a result, the spring is compressed and the connecting belt wrinkles, so that the locking blocks can disengage from the ring slot. Then, the handwheel can be used to pull the rotating rod upward and rotate the handwheel. The connecting column rotates, which drives the ball valve to rotate, thereby driving the guide channel to change direction, so that the water can be directed to different interfaces for water discharge. The interfaces can be connected to water hoses or water guns respectively. Depending on the actual situation, the water can be directed to the water hose or water gun for fire extinguishing on site. It is highly practical.

[0015] (2) The upper end of the connecting rod can be pulled back to the middle to insert the card block into the annular slot to position the handwheel, which is conducive to the stable docking of the guide channel and the interface. In addition, the inner wall of the connecting column can limit the slider through the slide rail to avoid the rotation rod from deflecting, which is conducive to the stable lifting of the handwheel. The water guide chamber can limit the guide block through the annular guide groove, which is conducive to the stable rotation of the ball valve and has good stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 3 For the utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 For the utility model Figure 1 Enlarged structural diagram at point B;

[0020] Figure 5 This is a schematic diagram of the ball valve and handwheel structure of this utility model;

[0021] In the diagram: 1. Handwheel; 2. Annular slot; 3. Solenoid valve; 4. Fire hydrant; 5. Interface; 6. Water guide chamber; 7. Annular guide groove; 8. Guide block; 9. Flow guide groove; 10. Water inlet pipe; 11. Ball valve; 12. Sealing ring; 13. Connecting column; 14. Slide rail; 15. Slider; 16. Rotating rod; 17. Locking block; 18. Spring; 19. Connecting belt; 20. Connecting rod; 21. Support block; 22. Support block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-5 An embodiment of this utility model is provided: a rotary pressure-reducing indoor fire hydrant, including a connecting column 13 and a fire hydrant 4. The connecting column 13 is located at the upper end inside the fire hydrant 4. A rotating rod 16 is provided at the upper end inside the connecting column 13, and a handwheel 1 is fixed at the upper end of the rotating rod 16. A support block 22 is provided at one end of the handwheel 1, and a support block 21 is provided at the lower end of the support block 22. Both ends of the support block 21 are hinged to connecting rods 20, and the middle of the connecting rods 20 is hinged to the front end of the support block 22. A locking block 17 is provided at the lower end of the connecting rod 20, and a spring 18 is connected between the side of the locking block 17 and the bottom of the support block 21. A connecting strap 19 is connected between the locking blocks 17.

[0024] When in use, the upper end of the connecting rod 20 can be pulled to bring the upper ends of the connecting rod 20 closer together, which will cause the locking blocks 17 to move closer together. As a result, the spring 18 is compressed and the connecting belt 19 is wrinkled, so that the locking blocks 17 can disengage from the annular slot 2. Then, the rotating rod 16 can be pulled upward by the handwheel 1, and the handwheel 1 can be rotated.

[0025] A ball valve 11 is installed inside the water guide chamber 6, and the upper end of the ball valve 11 is fixedly connected to the lower end of the connecting column 13. A flow guide groove 9 is provided inside the ball valve 11 corresponding to the interface 5.

[0026] When in use, the connecting column 13 rotates, which drives the ball valve 11 to rotate, and in turn drives the guide channel 9 to change direction, so that the water flow can be directed to different interfaces 5 for water discharge;

[0027] The fire hydrant 4 has a water guiding chamber 6 inside, and both ends of the water guiding chamber 6 are provided with interfaces 5. The inner wall of the fire hydrant 4 is provided with a sealing ring 12 corresponding to the upper end of the water guiding chamber 6.

[0028] When in use, interface 5 can be connected to a water hose or a water gun respectively, so that the water flow can be selected to be directed to the water hose or the water gun to extinguish the fire on site, depending on the actual situation.

[0029] The upper end of the fire hydrant 4 is provided with an annular slot 2, and the inside of the annular slot 2 is engaged with the locking block 17.

[0030] When in use, the upper end of the connecting rod 20 can be pulled back to the middle to insert the card block 17 into the annular slot 2 to position the handwheel 1, which is conducive to the stable docking of the guide groove 9 and the interface 5.

[0031] The upper and lower ends of the water guide chamber 6 are provided with annular guide grooves 7, and the upper and lower ends of the ball valve 11 are provided with guide blocks 8, and the guide blocks 8 are slidably connected to the annular guide grooves 7.

[0032] In use, the water guide chamber 6 can limit the guide block 8 through the annular guide groove 7, which is conducive to the stable rotation of the ball valve 11.

[0033] Both ends of the inner wall of the connecting column 13 are provided with slide rails 14, and the lower end of the rotating rod 16 is provided with a slider 15, and the slider 15 is slidably connected to the slide rail 14.

[0034] In use, the inner wall of the connecting column 13 can limit the slider 15 through the slide rail 14 to prevent the rotating rod 16 from deflecting, which is conducive to the stable lifting and lowering of the handwheel 1.

[0035] The lower end of the water guide chamber 6 is connected to the water inlet pipe 10, and the front end of the fire hydrant 4 is equipped with a solenoid valve 3 corresponding to the water inlet pipe 10.

[0036] When in use, the solenoid valve 3 can be switched on and off to allow water to flow through the inlet pipe 10 and into the water guide chamber 6;

[0037] In this embodiment, the water is first directed through the inlet pipe 10 into the guide chamber 6 by switching the solenoid valve 3. Then, the upper end of the connecting rod 20 is pulled, causing the upper ends of the connecting rods 20 to move closer together, which in turn causes the locking blocks 17 to move closer together. This compresses the spring 18 and causes the connecting belt 19 to fold, allowing the locking blocks 17 to disengage from the annular slot 2. Next, the rotating rod 16 is pulled upwards by the handwheel 1, and the handwheel 1 is rotated, causing the connecting column 13 to rotate, which in turn rotates the ball valve 11, thereby changing the direction of the guide channel 9. This allows the water flow to be directed to different interfaces 5 for outlet. The interfaces 5 can be divided into... Do not connect the water hose or nozzle. Depending on the actual situation, the water flow can be directed to either the water hose or the nozzle to extinguish the fire on site. Afterward, the upper end of the connecting rod 20 can be pulled back to the center to insert the locking block 17 into the annular slot 2 to position the handwheel 1. This facilitates the stable connection between the guide channel 9 and the interface 5. Furthermore, the inner wall of the connecting column 13 can limit the slider 15 through the slide rail 14 to prevent the rotating rod 16 from deflecting, which is beneficial for the stable lifting and lowering of the handwheel 1. The water guide chamber 6 can limit the guide block 8 through the annular guide groove 7, which is beneficial for the stable rotation of the ball valve 11. In summary, this fire hydrant has good practicality and stability.

Claims

1. A rotary pressure-reducing indoor fire hydrant, characterized in that: The device includes a connecting column (13) and a fire hydrant (4). The connecting column (13) is located at the upper end inside the fire hydrant (4). A rotating rod (16) is located at the upper end inside the connecting column (13), and a handwheel (1) is fixed at the upper end of the rotating rod (16). A support block (22) is located at one end of the handwheel (1), and a support block (21) is located at the lower end of the support block (22). Both ends of the support block (21) are hinged with connecting rods (20), and the middle of the connecting rods (20) is hinged to the front end of the support block (22). A locking block (17) is located at the lower end of the connecting rods (20), and a spring (18) is connected between the side of the locking block (17) and the bottom of the support block (21). A connecting strap (19) is connected between the locking blocks (17).

2. The rotary pressure-reducing indoor fire hydrant according to claim 1, characterized in that: The fire hydrant (4) is provided with a water guide chamber (6) inside, and both ends of the water guide chamber (6) are provided with interfaces (5). The inner wall of the fire hydrant (4) is provided with a sealing ring (12) corresponding to the upper end of the water guide chamber (6).

3. A rotary pressure-reducing indoor fire hydrant according to claim 2, characterized in that: The water guide chamber (6) is equipped with a ball valve (11), and the upper end of the ball valve (11) is fixedly connected to the lower end of the connecting column (13).

4. A rotary pressure-reducing indoor fire hydrant according to claim 3, characterized in that: The ball valve (11) has a flow guide groove (9) at its internal corresponding interface (5), and the water guide chamber (6) has an annular guide groove (7) at both the upper and lower ends.

5. A rotary pressure-reducing indoor fire hydrant according to claim 4, characterized in that: The ball valve (11) is provided with guide blocks (8) at both the upper and lower ends, and the guide blocks (8) are slidably connected to the annular guide groove (7).

6. A rotary pressure-reducing indoor fire hydrant according to claim 3, characterized in that: The inner walls of the connecting column (13) are provided with slide rails (14) at both ends, and the lower end of the rotating rod (16) is provided with a slider (15), and the slider (15) is slidably connected to the slide rail (14).

7. A rotary pressure-reducing indoor fire hydrant according to claim 3, characterized in that: The lower end of the water guide chamber (6) is connected to the water inlet pipe (10), and the front end of the fire hydrant (4) is equipped with a solenoid valve (3) corresponding to the water inlet pipe (10).

8. A rotary pressure-reducing indoor fire hydrant according to claim 2, characterized in that: The fire hydrant (4) is provided with an annular slot (2) at its upper end, and the interior of the annular slot (2) is engaged with the locking block (17).

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