Overground fire hydrant with adjustable pressure

Abstract

The utility model relates to an overground fire hydrant with adjustable pressure. The overground fire hydrant comprises a base, a connecting pipe is installed at the bottom of the base, a lower hydrant body is installed at the top of the base, an upper hydrant body is installed at the top of the lower hydrant body, an outflow pipe is arranged on the outer surface of the upper hydrant body, and a quick-wear part is arranged on the outer surface of the upper hydrant body and close to the connecting position of the upper hydrant body and the lower hydrant body. A plurality of protection rods are installed on the upper surface of the base in an annular array mode, and a plurality of reinforcing rings are jointly installed among the multiple protection rods. Through the protection effect of the protection rod and the reinforcing ring, the situation that the lower hydrant body and the upper hydrant body are damaged can be avoided when small collision occurs, and through the arrangement of the vulnerable part, the upper hydrant body can be deformed or broken from the vulnerable part when large collision occurs, so that the impact force borne by the lower hydrant body and the connecting pipe is greatly reduced, and the service life of the lower hydrant body and the connecting pipe is prolonged. The situation that the joint of the connecting pipe and the main water supply pipe is damaged is avoided, so that normal water supply of the main water supply pipe to other fire-fighting equipment is guaranteed, and the maintenance difficulty and cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of fire hydrant technology, specifically to a pressure-adjustable above-ground fire hydrant. Background Technology

[0002] Adjustable pressure fire hydrants are a type of fire-fighting facility with special functions. They are based on the conventional fire hydrant structure but are equipped with a pressure regulating device. In fire rescue scenarios, different fire sizes, fire-fighting equipment, and fire extinguishing locations have different water pressure requirements. These fire hydrants can flexibly adjust the output water pressure according to actual needs.

[0003] Chinese patent CN222314131U discloses an adjustable pressure fire hydrant. The fire hydrant consists of a hydrant body, a connecting rod, a seal, and an adjusting component. By rotating the adjusting component, the contact position between the connecting rod and the arc-shaped guide surface changes. The elastic force of the first spring on the connecting rod controls the relative position of the seal in the hydrant body, thereby controlling the flow rate of fluid between the second flow hole and the first flow hole, thus regulating the pressure of the fluid in the outlet pipe.

[0004] While the aforementioned patent can regulate the fluid pressure in the outflow pipe, its overall structure offers poor protection. When the hydrant is involved in a vehicle collision, not only will its overall structure be damaged, but the connection between the hydrant and the main water pipe will also be damaged due to the tension caused by the hydrant, leading to leaks in the main water pipe. This not only wastes water resources but may also affect the normal water supply to other fire-fighting facilities. In severe cases, it may cause partial failure of the entire fire-fighting water supply system, impacting fire-fighting operations on a larger scale. Utility Model Content

[0005] The purpose of this invention is to provide a pressure-adjustable above-ground fire hydrant, which effectively solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] An adjustable pressure ground fire hydrant includes a base, a connecting pipe installed at the bottom of the base, a lower hydrant body installed at the top of the base, an upper hydrant body installed at the top of the lower hydrant body, an outflow pipe provided on the outer surface of the upper hydrant body, and a vulnerable part provided on the outer surface of the upper hydrant body near the connection with the lower hydrant body. Multiple protective rods are installed in a circular array on the upper surface of the base, and multiple reinforcing rings are installed between the multiple protective rods.

[0008] Furthermore, a first valve is installed on the outer surface of the connecting pipe, and a drive mechanism is provided at the end of the valve stem of the first valve. The drive mechanism can operate the first valve on the upper side of the base.

[0009] Furthermore, the drive mechanism includes a worm gear mounted on the end of the valve stem of the first valve, a first rotating shaft vertically penetrating and rotatably mounted inside the base, a worm gear mounted on the outer surface of the first rotating shaft, and the worm gear meshing with the worm gear.

[0010] Furthermore, a drain pipe is connected to the outer surface of the connecting pipe above the first valve, and a second valve is installed on the outer surface of the drain pipe. A second rotating shaft is connected to the end of the valve stem of the second valve, and the end of the second rotating shaft extends through to the top of the base. A housing is installed on the outer surface of the connecting pipe below the first valve, and a heating coil is provided between the housing and the connecting pipe.

[0011] Furthermore, a first protective cover is installed on the lower surface of the base, and the worm gear, the first rotating shaft, and the worm are all located inside the first protective cover. The end of the first rotating shaft is rotatably connected to the bottom wall of the first protective cover. A second protective cover is installed on the lower surface of the base, and the second rotating shaft is located inside the second protective cover.

[0012] Furthermore, a first handwheel is installed on the top of the first rotating shaft, and a second handwheel is installed on the top of the second rotating shaft.

[0013] Furthermore, a filter screen is installed at the end of the drain pipe.

[0014] Furthermore, the outer surface of the filter screen is coated with anti-rust paint.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0016] 1. This utility model, through the protective function of the protective rod and reinforcing ring, can prevent the lower and upper hydrant bodies from being directly impacted in the event of a collision. For minor collisions, it can prevent damage to the lower and upper hydrant bodies. Furthermore, through the design of the vulnerable part, in the event of a major collision where the protective rod cannot provide protection and support, the upper hydrant body can deform or break at the vulnerable part, thereby significantly reducing the impact force on the lower hydrant body and the connecting pipe, preventing damage to the connection between the connecting pipe and the main water supply pipe, thus ensuring the normal water supply of the main water supply pipeline to other fire-fighting facilities. Only the upper hydrant body needs to be replaced, reducing maintenance difficulty and cost.

[0017] 2. This utility model controls the opening and closing of the first valve through a drive mechanism. When the upper valve body is damaged, the first valve can be closed, thereby preventing water from leaking to the outside and reducing the waste of water resources.

[0018] 3. In cold weather, this utility model can close the first valve and discharge the water above the first valve through the drain pipe, thereby preventing the connecting pipe from freezing inside the upper part, lower valve body, and upper valve body of the first valve. Furthermore, the lower part of the first valve can be thawed by heating coils, ensuring normal use in cold weather and preventing the situation where the inside freezes, thus affecting rescue efforts. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a front view of a partial structure of the present invention;

[0021] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0022] Figure 4 This is a partial structural diagram of the drain pipe in this utility model.

[0023] In the diagram: 100, base; 101, connecting pipe; 102, lower plug body; 103, upper plug body; 104, outlet pipe; 105, protective rod; 106, reinforcing ring; 107, vulnerable part; 200, first valve; 300, drive mechanism; 301, worm gear; 302, first rotating shaft; 303, worm; 400, drain pipe; 401, second valve; 402, second rotating shaft; 403, housing; 404, heating coil; 500, first protective cover; 501, second protective cover; 600, first handwheel; 601, second handwheel; 700, filter screen. Detailed Implementation

[0024] 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.

[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to 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 embodiments of this utility model.

[0026] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0027] Please see Figures 1-4 This utility model provides a pressure-adjustable above-ground fire hydrant, including a base 100, a connecting pipe 101 installed at the bottom of the base 100, a lower hydrant body 102 installed at the top of the base 100, an upper hydrant body 103 installed at the top of the lower hydrant body 102, an outlet pipe 104 provided on the outer surface of the upper hydrant body 103, and a vulnerable part 107 provided on the outer surface of the upper hydrant body 103 near the connection with the lower hydrant body 102. Multiple protective rods 105 are installed in a circular array on the upper surface of the base 100, and multiple reinforcing rings 106 are installed between the multiple protective rods 105.

[0028] In use, the protective rod 105 and the reinforcing ring 106 surround the lower hydrant body 102 and the upper hydrant body 103 to provide protection. In the event of a collision, the lower hydrant body 102 and the upper hydrant body 103 are prevented from being directly impacted. For minor collisions, the lower hydrant body 102 and the upper hydrant body 103 are prevented from being damaged. Furthermore, through the setting of the vulnerable part 107, in the event of a major collision and when the protective rod 105 cannot provide protection and support, the upper hydrant body 103 will deform or break at the vulnerable part 107, thereby significantly reducing the impact force on the lower hydrant body 102 and the connecting pipe 101. This prevents damage to the connection between the connecting pipe 101 and the main water supply pipe, thus ensuring that the main water supply pipeline can supply water to other fire-fighting facilities normally. Only the upper hydrant body 103 needs to be replaced, reducing maintenance difficulty and cost.

[0029] Preferably, a first valve 200 is installed on the outer surface of the connecting pipe 101, and a drive mechanism 300 is provided at the end of the valve stem of the first valve 200. The drive mechanism 300 can operate the first valve 200 on the upper side of the base 100.

[0030] When the upper valve body 103 is damaged by an impact, water will leak out. At this time, the first valve 200 can be closed by controlling the opening and closing of the first valve 200 through the drive mechanism 300, thereby preventing water from leaking out and reducing the waste of water resources.

[0031] Preferably, the drive mechanism 300 includes a worm gear 301 mounted on the valve stem end of the first valve 200, a first rotating shaft 302 vertically penetrating and rotatably mounted inside the base 100, a worm 303 mounted on the outer surface of the first rotating shaft 302, and the worm 303 meshing with the worm gear 301.

[0032] By rotating the first shaft 302, the worm 303 is driven to rotate. Since the worm 303 and the worm wheel 301 mesh with each other, the purpose of controlling the first valve 200 above the base 100 is achieved.

[0033] Preferably, the outer surface of the connecting pipe 101 is connected to a drain pipe 400 above the first valve 200, the outer surface of the drain pipe 400 is equipped with a second valve 401, the end of the valve stem of the second valve 401 is connected to a second rotating shaft 402, the end of the second rotating shaft 402 extends through to the top of the base 100, the outer surface of the connecting pipe 101 below the first valve 200 is equipped with a housing 403, and a heating coil 404 is provided between the housing 403 and the connecting pipe 101.

[0034] In cold weather, the first valve 200 can be closed, and then the second shaft 402 can be rotated to open the second valve 401, so that the water above the first valve 200 can be discharged outward through the drain pipe 400 and seep into the ground. This can prevent the connecting pipe 101 located above the first valve 200, the lower plug body 102 and the upper plug body 103 from freezing. In addition, the lower part of the first valve 200 can be heated and thawed by the heating coil 404, ensuring normal use in cold weather and avoiding the situation where the inside freezes and affects rescue.

[0035] Preferably, a first protective cover 500 is installed on the lower surface of the base 100, the worm gear 301, the first rotating shaft 302 and the worm 303 are all disposed inside the first protective cover 500, and the end of the first rotating shaft 302 is rotatably connected to the bottom wall of the first protective cover 500. A second protective cover 501 is installed on the lower surface of the base 100, and the second rotating shaft 402 is disposed inside the second protective cover 501.

[0036] The first protective cover 500 can isolate the worm gear 301, the first rotating shaft 302 and the worm 303 from the soil, ensuring the normal meshing and transmission of the worm gear 301 and the worm 303 and reducing rust and corrosion. The second protective cover 501 can isolate the second rotating shaft 402 from the soil, reducing rust and corrosion.

[0037] Preferably, a first handwheel 600 is mounted on the top of the first rotating shaft 302, and a second handwheel 601 is mounted on the top of the second rotating shaft 402.

[0038] The first handwheel 600 and the second handwheel 601 are designed to facilitate hand gripping, thereby making it convenient to rotate the first rotating shaft 302 and the second rotating shaft 402.

[0039] Preferably, a filter screen 700 is provided at the end of the drain pipe 400.

[0040] The filter screen 700 can keep the dirt outside the drain pipe 400, preventing dirt from entering the inside of the drain pipe 400.

[0041] Preferably, the outer surface of the filter screen 700 is coated with anti-rust paint.

[0042] Rust-preventive paint can increase the corrosion resistance of the filter screen 700, reducing rust and corrosion in damp underground environments and extending its service life.

[0043] 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.

Claims

1. A pressure-adjustable above-ground fire hydrant, comprising a base (100), characterized in that: A connecting pipe (101) is installed at the bottom of the base (100), a lower plug body (102) is installed at the top of the base (100), an upper plug body (103) is installed at the top of the lower plug body (102), an outlet pipe (104) is provided on the outer surface of the upper plug body (103), and a vulnerable part (107) is provided on the outer surface of the upper plug body (103) near the connection with the lower plug body (102). The upper surface of the base (100) is provided with a ring array of multiple protective rods (105), and multiple reinforcing rings (106) are installed together between the multiple protective rods (105).

2. The pressure-adjustable above-ground fire hydrant according to claim 1, characterized in that: A first valve (200) is installed on the outer surface of the connecting pipe (101). A drive mechanism (300) is provided at the end of the valve stem of the first valve (200). The drive mechanism (300) can operate the first valve (200) on the upper side of the base (100).

3. A pressure-adjustable above-ground fire hydrant according to claim 2, characterized in that: The drive mechanism (300) includes a worm gear (301) mounted on the valve stem end of the first valve (200), a first rotating shaft (302) is vertically inserted and rotatably mounted inside the base (100), a worm (303) is mounted on the outer surface of the first rotating shaft (302), and the worm (303) is meshed with the worm gear (301).

4. The pressure-adjustable above-ground fire hydrant according to claim 3, characterized in that: The outer surface of the connecting pipe (101) is connected to a drain pipe (400) above the first valve (200). A second valve (401) is installed on the outer surface of the drain pipe (400). A second rotating shaft (402) is connected to the end of the valve stem of the second valve (401). The end of the second rotating shaft (402) extends through to the top of the base (100). A housing (403) is installed on the outer surface of the connecting pipe (101) below the first valve (200). A heating coil (404) is provided between the housing (403) and the connecting pipe (101).

5. A pressure-adjustable above-ground fire hydrant according to claim 4, characterized in that: A first protective cover (500) is installed on the lower surface of the base (100). The worm gear (301), the first rotating shaft (302) and the worm (303) are all disposed inside the first protective cover (500). The end of the first rotating shaft (302) is rotatably connected to the bottom wall of the first protective cover (500). A second protective cover (501) is installed on the lower surface of the base (100). The second rotating shaft (402) is disposed inside the second protective cover (501).

6. A pressure-adjustable above-ground fire hydrant according to claim 4, characterized in that: A first handwheel (600) is mounted on the top of the first rotating shaft (302), and a second handwheel (601) is mounted on the top of the second rotating shaft (402).

7. A pressure-adjustable above-ground fire hydrant according to claim 4, characterized in that: A filter screen (700) is provided at the end of the drain pipe (400).

8. A pressure-adjustable above-ground fire hydrant according to claim 7, characterized in that: The outer surface of the filter screen (700) is coated with anti-rust paint.

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