An adjustable water pressure hydrant

Abstract

This utility model discloses an adjustable water pressure fire hydrant, including a fire hydrant base with a flange at the bottom, which is fixedly connected to an external pipe by bolts. The fire hydrant base has two water outlet pipes, and the ends of the water outlet pipes are threaded with sealing caps. A mounting cap is also included, which is fixedly connected to the fire hydrant base by bolts. An adjustment assembly includes an operating lever, a handwheel, a sealing element, and a drive block. Two sets of both the sealing element and the drive block are provided. The handwheel is rotatably mounted on the fire hydrant base. When it is necessary to adjust the water pressure in the water outlet pipes, rotating the handwheel causes the operating lever to move the drive block vertically, thereby changing the water flow between the sealing element and the annular protrusion, thus achieving the effect of adjusting the water pressure.

Description

Technical Field

[0001] This utility model discloses an adjustable water pressure fire hydrant, belonging to the field of fire-fighting equipment technology. Background Technology

[0002] Firefighting equipment is the most important firefighting tool at a fire scene. Correctly mastering and using firefighting equipment plays an irreplaceable role in reducing casualties and property losses in fires. Therefore, the correct use of various firefighting equipment is an extremely important part of firefighting work. Fire hydrants are the most common and frequently used firefighting facilities in many fields such as urban buildings and industrial plants. They have the most rapid and effective firefighting capabilities. The fire hydrant head is a very important connecting device for opening fire water. At present, most traditional fire hydrants rely on the water supply pressure in the pipe to control the water pressure. When it is necessary to adjust the water pressure according to the actual situation at the fire scene, the operation is not flexible enough. Moreover, most existing fire hydrants can only adjust the water pressure of one outlet pipe. Utility Model Content

[0003] The purpose of this invention is to solve the problems in the prior art by providing a fire hydrant with adjustable water pressure.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: an adjustable water pressure fire hydrant, comprising:

[0005] A fire hydrant seat, the bottom of which is provided with a flange, the flange being fixedly connected to an external pipe by bolts, the fire hydrant seat having two water outlet pipes, the ends of which are threadedly connected with sealing caps;

[0006] The mounting cover is fixedly connected to the fire hydrant seat by bolts;

[0007] The adjustment assembly includes an operating lever, a handwheel, a seal, and a drive block. Two sets of seals and drive blocks are provided. The handwheel is rotatably mounted on the fire hydrant seat. The middle of the operating lever passes through a mounting cover, with one end threadedly connected to the handwheel and the other end fixedly connected to the drive block. An annular protrusion is provided inside the water outlet pipe. Both sides of the drive block have wedge-shaped surfaces. The seal is slidably mounted inside the water outlet pipe. An elastic component is also provided inside the water outlet pipe, applying elastic force to one end of the seal and causing its other end to abut against the wedge-shaped surface.

[0008] Preferably, the elastic component includes a fixing frame and a spring. The fixing frame is detachably connected to the water outlet pipe. The two ends of the spring abut against the fixing frame and the sealing element, respectively, and the spring applies a force close to the driving block to the sealing element.

[0009] Preferably, the fixing frame has a cross-shaped structure, and the water outlet pipe is provided with a pin for installing the fixing frame. One end of the pin is embedded in the fixing frame, and the other end extends to the outside of the water outlet pipe and is provided with a threaded hole.

[0010] Preferably, the sealing element has a conical structure, the annular protrusion is provided with a conical surface that mates with the sealing element, and a protruding post is provided on the side of the sealing element near the driving block, one end of the protruding post mates with a wedge-shaped surface.

[0011] Preferably, a guide rod is fixedly connected between the two fixing frames, the guide rod passes through the two sealing elements, and the drive block is provided with an oblong hole for the guide rod to pass through.

[0012] Preferably, the mounting cover is provided with a limiting ring for rotating the mounting handwheel. The limiting ring includes two semicircular rings, which are fixedly connected to the mounting cover by bolts.

[0013] Preferably, the sealing cover is provided with a groove, and a sealing filler and a movable sleeve are provided in the groove, with one end of the movable sleeve abutting against the limiting ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By setting up a fire hydrant seat, adjusting components, and spring components, the flow of water in the outlet pipe is achieved by the operating rod driving the drive block upward, causing the spring to apply elastic force to the drive block, thus moving the seal away from the annular protrusion. In this way, the water in the fire hydrant seat can pass between the two and flow out from the outlet pipe. By controlling the size of the gap between the seal and the annular protrusion, the flow rate of water can be controlled, thereby indirectly regulating the water pressure. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an adjustable water pressure fire hydrant according to the present invention;

[0017] Figure 2 This is a structural schematic diagram of an adjustable water pressure fire hydrant according to the present invention;

[0018] Figure 3 This is a schematic diagram of the installation structure of the iron core and the tensioning device in this utility model;

[0019] Figure 4 This is an exploded view of the tensioning device in this utility model;

[0020] Reference numerals in the attached diagram: 1. Fire hydrant seat; 2. Sealing cover; 3. Mounting cover; 4. Handwheel; 5. Operating lever; 6. Limiting ring; 7. Water outlet pipe; 8. Flange; 9. Spring; 10. Fixing bracket; 11. Semicircular ring; 12. Pin; 13. Guide rod; 14. Movable sleeve; 15. Seal; 16. Drive block; 17. Waist-shaped hole; 18. Wedge-shaped surface; 19. Protruding column; 20. Ring protrusion. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-4 As shown, an adjustable water pressure fire hydrant includes a fire hydrant seat 1, a mounting cover 3, and an adjusting assembly. The bottom of the fire hydrant seat 1 is provided with a flange 8, which is fixedly connected to an external pipe by bolts. The fire hydrant seat 1 has two water outlet pipes 7, with a sealing cover 2 threadedly connected to the end of each water outlet pipe 7. The mounting cover 3 is fixedly connected to the fire hydrant seat 1 by bolts. The adjusting assembly includes an operating lever 5, a handwheel 4, a sealing element 15, and a drive block 16. Two sets of sealing elements 15 and drive blocks 16 are provided. The handwheel 4 is rotatably mounted on the fire hydrant seat 1. The middle of the operating lever 5 passes through the mounting cover 3, with one end threadedly connected to the handwheel 4 and the other end fixedly connected to the drive block 16. An annular protrusion 20 is provided inside the water outlet pipe 7. Both sides of the drive block 16 have wedge-shaped surfaces 18. The sealing element 15 is slidably mounted inside the water outlet pipe 7. An elastic assembly is also provided inside the water outlet pipe 7, applying elastic force to one end of the sealing element 15 and causing its other end to abut against the wedge-shaped surface 18.

[0023] like Figure 2 and Figure 4As shown, the elastic component includes a fixing frame 10 and a spring 9. The fixing frame 10 is detachably connected to the water outlet pipe 7. The two ends of the spring 9 abut against the fixing frame 10 and the sealing element 15, respectively, and the spring 9 applies a force to the sealing element 15 close to the driving block 16. The fixing frame 10 has a cross-shaped structure. The water outlet pipe 7 is provided with a pin 12 for installing the fixing frame 10. One end of the pin 12 is embedded in the fixing frame 10, and the other end extends to the outside of the water outlet pipe 7 and is provided with a threaded hole. The sealing element 15 has a conical structure. The annular protrusion 20 is provided with a conical surface that mates with the seal 15. The seal 15 is provided with a protrusion 19 on the side near the drive block 16. One end of the protrusion 19 mates with the wedge-shaped surface 18. The fixing bracket 10 is installed in the water outlet pipe 7 through the pin 12, so that the spring 9 is in a compressed state after installation, thereby applying elastic force to the seal 15. However, when the drive block 16 moves downward, it can drive the seal 15 to mate with the annular protrusion 20. The conical surface can increase the sealing contact area between the two, thereby better ensuring the sealing performance.

[0024] like Figure 2 As shown, a guide rod 13 is fixedly connected between the two fixed brackets 10. The guide rod 13 passes through the two seals 15. The drive block 16 is provided with an oblong hole 17 for the guide rod 13 to pass through. The seals 15 are slidably connected to each other so that they will not be misaligned when sliding with the drive block 16. This allows the seals 15 to be automatically aligned with the annular protrusion 20, ensuring that the water outlet pipe 7 can be closed when the seals 15 come into contact with the annular protrusion 20.

[0025] like Figure 1 and Figure 2 As shown, the mounting cover 3 is provided with a limiting ring 6 for rotating the mounting handwheel 4. The limiting ring 6 includes two semicircular rings 11, which are fixedly connected to the mounting cover 3 by bolts. The handwheel 4 can be mounted on the mounting cover 3 by the two semicircular rings 11. The lower end of the handwheel 4 is provided with a boss, which cannot be disengaged from the limiting ring 6 and its rotation is not affected. When the handwheel 4 is rotated, the operating lever 5 can be raised and lowered vertically.

[0026] like Figure 2 As shown, the sealing cover 2 has a groove, in which sealing filler and movable sleeve 14 are placed. One end of movable sleeve 14 abuts against limit ring 6. When installing handwheel 4, the sealing filler is first filled into the groove, and then movable sleeve 14 is installed. Finally, limit ring 6 is fixed to mounting cover 3 with bolts, so that limit ring 6 applies pressure to movable sleeve 14, thereby allowing movable sleeve 14 to compact the sealing filler, so as to ensure the sealing between operating rod 5 and mounting cover 3.

[0027] Working principle: When using the fire hydrant, the sealing element 15 is kept in contact with the annular protrusion 20 under the action of the driving block 16. At this time, water will not flow out of the outlet pipe 7. Remove the sealing cover 2 from the outlet pipe 7, and then install the fire hose connector on the outlet pipe 7. Then turn the handwheel 4, so that the operating lever 5 drives the driving block 16 to move upward. The guide rod 13 slides in the oblong hole 17. Under the action of the spring 9, the sealing element 15 moves towards the driving block 16, so that the sealing element 15 disengages from the annular protrusion 20. In this way, the water in the fire hydrant seat 1 can flow into the fire hose from the outlet pipe 7. By controlling the lifting height of the driving block 16, the gap between the sealing element 15 and the annular protrusion 20 can be changed to adjust the water flow and change the water pressure. Two outlet pipes 7 can be connected to two fire hoses at the same time. The water pressure in the two outlet pipes 7 can be controlled by the operating lever 5 at the same time. The operation is simple and flexible.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] 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 water pressure hydrant, comprising: include: Fire hydrant seat (1), the bottom of the fire hydrant seat (1) is provided with a flange (8), the flange (8) is fixedly connected to an external pipe by bolts, the fire hydrant seat (1) has two water outlet pipes (7), the ends of the water outlet pipes (7) are threadedly connected with sealing caps (2); Mounting cover (3), which is fixedly connected to fire hydrant seat (1) by bolts; The adjustment assembly includes an operating lever (5), a handwheel (4), a seal (15), and a drive block (16). The seal (15) and the drive block (16) are provided in two sets. The handwheel (4) is rotatably mounted on the fire hydrant seat (1). The middle part of the operating lever (5) is provided through the mounting cover (3). One end of the operating lever (5) is threadedly connected to the handwheel (4), and the other end is fixedly connected to the drive block (16). The outlet pipe (7) is provided with an annular protrusion (20). Both sides of the drive block (16) have wedge-shaped surfaces (18). The seal (15) is slidably mounted in the outlet pipe (7). The outlet pipe (7) is also provided with an elastic component. The elastic component applies elastic force to one end of the seal (15) and makes its other end abut against the wedge-shaped surface (18).

2. The adjustable water pressure hydrant of claim 1, wherein, The elastic component includes a fixing frame (10) and a spring (9). The fixing frame (10) is detachably connected to the water outlet pipe (7). The two ends of the spring (9) abut against the fixing frame (10) and the seal (15) respectively, and the spring (9) applies a force to the seal (15) close to the drive block (16).

3. The adjustable water pressure hydrant of claim 2, wherein, The fixing frame (10) has a cross-shaped structure. The water outlet pipe (7) is provided with a pin (12) for installing the fixing frame (10). One end of the pin (12) is embedded in the fixing frame (10), and the other end extends to the outside of the water outlet pipe (7) and is provided with a threaded hole.

4. The adjustable water pressure hydrant of claim 2, wherein, The sealing element (15) has a conical structure. The annular protrusion (20) is provided with a conical surface that cooperates with the sealing element (15). The sealing element (15) is provided with a protruding post (19) on the side near the driving block (16). One end of the protruding post (19) cooperates with the wedge-shaped surface (18).

5. The adjustable water pressure hydrant of claim 2, wherein, A guide rod (13) is fixedly connected between the two fixed brackets (10). The guide rod (13) passes through the two seals (15). The drive block (16) is provided with an oblong hole (17) for the guide rod (13) to pass through.

6. The adjustable water pressure hydrant of claim 1, wherein, The mounting cover (3) is provided with a limiting ring (6) for rotating the mounting handwheel (4). The limiting ring (6) includes two semicircular rings (11), which are fixedly connected to the mounting cover (3) by bolts.

7. The adjustable water pressure hydrant of claim 6, wherein, The sealing cap (2) is provided with a groove, and a sealing filler and a movable sleeve (14) are provided in the groove. One end of the movable sleeve (14) abuts against the limiting ring (6).

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