Municipal engineering fire hydrant

Abstract

The utility model discloses a municipal engineering fire hydrant, and relates to the technical field of municipal engineering fire hydrants, in particular to a municipal engineering fire hydrant which comprises a fire hydrant base, a fixing support, a valve, a water drainage pipe head, an automatic water drainage assembly, an upper cover, a pressurizing pipe, a fire hydrant top pipe and a water outlet pipe. A fire hydrant top pipe is arranged on the upper side of the pressurizing pipe, water outlet pipes are arranged on the two sides of the exterior of the fire hydrant top pipe, an upper cover is arranged on the upper side of the exterior of the fire hydrant top pipe, a fixing support is arranged in the fire hydrant top pipe, a water drainage pipe head is arranged on the rear side of the exterior of the fire hydrant base, and a self-water-drainage assembly is arranged on the water drainage pipe head. Compared with the prior art, the fire hydrant has the advantages that water in the fire hydrant can be automatically drained after the fire hydrant is closed, and corrosion in the fire hydrant is delayed.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal fire hydrants, in particular to a municipal engineering fire hydrant. Background Art

[0002] The main purpose of fire hydrants is to control combustible materials, isolate combustible materials and eliminate fire sources. The fire protection system includes outdoor fire hydrant systems, indoor fire hydrant systems and fire extinguisher systems. Some also have automatic sprinkler systems, water cannon systems and gas fire extinguishing systems.

[0003] A fire hydrant set is generally composed of a fire box, a fire hose, a water gun, a connector, a plug and a clip. It is mainly used for fire trucks to draw water from the municipal water supply network or the outdoor fire water supply network to extinguish fires. It can directly connect the hose and water gun to discharge water for fire extinguishing. Therefore, the fire hydrant system is one of the important fire-fighting facilities for fighting fires. In order to facilitate fire extinguishing of buildings or other facilities from the outside of the building, fire hydrants are also installed along the road.

[0004] The announcement number CN217974596U describes a municipal fixed fire hydrant, which includes a fire hydrant body, wherein a valve stem is provided in the fire hydrant body, and a fixing rod fixedly connected to the inner wall of the fire hydrant body is provided above the valve stem, wherein the fixing rod is rotatably connected to a rotating rod, and the rotating rod is movably connected to the rotating rod. When not in use, the connecting block is pulled so that the connecting block drives the clamping rod to move and disengage from the through slot, thereby making the connection between the connecting rod and the turntable invalid, so that the first spring is reset, and the rotating rod at the top of the first spring is reset, that is, the rotating rod is disengaged from the mounting slot, so as to prevent the valve stem from rotating due to external force or manual rotation of the turntable when not in use, and positioning is performed by the positioning strip and the positioning slot. Different positioning methods are adopted to prevent uninformed personnel from rotating the turntable to operate the fire hydrant, thereby improving the specificity of the fire hydrant and preventing non-professionals from performing unreasonable operation on the fire hydrant.

[0005] Although the above fire hydrants solve certain problems, they still have the following disadvantages:

[0006] (1) After the fire hydrant is closed, water will be ejected from the pipe below, and water will remain inside the fire hydrant. If the accumulated water is not discharged, it will easily accelerate the rusting of the internal parts of the fire hydrant and shorten the service life of the fire hydrant. The rusted fire hydrant will easily fall off the iron slag, which will easily flow into the fire hose and block the fire hose when extinguishing the fire.

[0007] (2) The water flow force of this fire hydrant mainly relies on the water flow force delivered by the water pipe on the lower side of the fire hydrant, and does not have the function of increasing the pressure of the water flow. Utility Model Content

[0008] The purpose of the utility model is to provide a fire hydrant for municipal engineering.

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A municipal engineering fire hydrant, comprising:

[0011] A fire hydrant base, wherein the inner diameter of the fire hydrant base gradually increases from bottom to top, a booster pipe is fixedly connected to the upper end of the outer portion of the fire hydrant base, the inner diameter of the booster pipe is smaller than the water inlet hole on the lower side of the inner portion of the fire hydrant base, a fire hydrant top pipe is fixedly connected to the upper end of the outer portion of the booster pipe, and water outlet pipes are fixedly connected to both sides of the outer portion of the fire hydrant top pipe;

[0012] A fixed bracket is arranged inside the fire hydrant top pipe, and a clamping block is provided at the front and rear ends of the bottom end of the fire hydrant top pipe, and the front and rear ends of the lower ends of the fixed bracket are respectively clamped in the inside of the clamping block;

[0013] A valve is provided on the lower side of the interior of the fire hydrant base, the valve is adapted to the water inlet hole at the lower end of the interior of the fire hydrant base, an upper end of the valve is fixedly connected to an adjusting rod, and the adjusting rod is threadedly connected to the fixing bracket;

[0014] A drain pipe head, the drain pipe head is fixedly connected to the lower end of the rear side of the exterior of the fire hydrant base, the interior of the drain pipe head is connected to the interior of the fire hydrant base, a movable slot is opened on the rear side of the exterior of the drain pipe head, and a plurality of evenly distributed drain holes are opened on the rear side of the exterior of the drain pipe head;

[0015] A self-draining water component, which is arranged inside the drain pipe head;

[0016] The upper cover is arranged on the upper side of the outer side of the fire hydrant top pipe, the upper end of the outer side of the upper cover is fixedly connected with a shaft seal used in conjunction with the adjusting rod, and the lower side of the inner side of the upper cover is provided with a snap ring used in conjunction with the fixed bracket.

[0017] Furthermore, the self-draining water component includes:

[0018] A movable rod is disposed inside the movable slot and is slidably connected to the inside of the movable slot;

[0019] A plug is fixedly connected to the inside of the movable rod, the plug is smaller than the inner diameter of the drain pipe head, and the plug is adapted to the drain hole;

[0020] An extrusion spring is located between the plug and the rear side wall of the drain pipe head, and the extrusion spring is sleeved on the outside of the movable rod;

[0021] A stopper is fixedly connected to the rear end of the movable rod and is located on the rear side of the exterior of the drain pipe head.

[0022] Furthermore, the water outlet pipes are all through-connected to the inside of the fire hydrant top pipe, and the other ends of the water outlet pipes connected to the fire hydrant top pipes are all provided with sealing covers, and the sealing covers are threadedly connected to the inside of the water outlet pipes.

[0023] Furthermore, the upper end of the adjusting rod extends to the upper side of the outer portion of the upper cover, the adjusting rod is movably connected to the interior of the shaft seal, and the upper end of the adjusting rod is fixedly connected to an adjusting head.

[0024] Furthermore, a water inlet pipe is provided on the lower side of the exterior of the fire hydrant base, and the fire hydrant base is connected to the water inlet pipe by a flange, and the water outlet pipes on both sides are respectively used to connect a 65mm fire hose and a 10cm fire truck hose.

[0025] The utility model provides a municipal engineering fire hydrant, which has the following beneficial effects:

[0026] (1) A drain pipe head is set on the outer rear side of the fire hydrant base, and a movable slot hole is opened on the rear side of the drain pipe head. After the front end of the movable rod inside the movable slot is impacted by the high-pressure water flow, the plug blocks the drain hole on the outer rear side of the pressure relief pipe head. After closing the valve, the water pressure inside the fire hydrant is reduced, and the extrusion spring rebounds the plug forward, the drain hole is opened, and the water inside the fire hydrant is automatically discharged to the outside, thereby avoiding the rust of the interior of the fire hydrant caused by immersion and delaying the rust inside the fire hydrant.

[0027] (2) By fixing a booster pipe with a smaller diameter to the upper end of the fire hydrant base, the water pressure is increased when the water flows out of the fire hydrant, and the sprayed water is additionally pressurized. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only exemplary, and those skilled in the art can also derive other implementation drawings based on the provided drawings without inventive effort.

[0029] Figure 1 This utility model is a three-dimensional fire hydrant for municipal engineering Figure 1 .

[0030] Figure 2 This utility model is a three-dimensional fire hydrant for municipal engineering Figure 2 .

[0031] Figure 3 This is a three-dimensional structure of a municipal engineering fire hydrant. Figure 1 .

[0032] Figure 4 This is a three-dimensional structure of a municipal engineering fire hydrant. Figure 2 .

[0033] Figure 5 This is a three-dimensional structure of a municipal engineering fire hydrant. Figure 3 .

[0034] Figure 6 This is a three-dimensional structure of a municipal engineering fire hydrant. Figure 4 .

[0035] Markings in the figure: 1. Fire hydrant base; 2. Fixed bracket; 3. Valve; 4. Drain pipe head; 5. Self-draining assembly; 501. Movable rod; 502. Plug; 503. Extrusion spring; 504. Stopper; 6. Upper cover; 7. Retaining ring; 8. Booster pipe; 9. Fire hydrant top pipe; 10. Water outlet pipe; 11. Block; 12. Adjusting rod; 13. Movable slot; 14. Drain hole; 15. Shaft seal; 16. Sealing cover; 17. Adjusting head; 18. Water inlet pipe; 19. Flange. DETAILED DESCRIPTION

[0036] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0037] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] Example 1:

[0039] like Figures 1 to 6 As shown, this embodiment proposes a municipal engineering fire hydrant, including a fire hydrant base 1, a fixed bracket 2, a valve 3, a drain pipe head 4, a self-draining water component 5, an upper cover 6, a booster pipe 8, a fire hydrant top pipe 9 and a water outlet pipe 10 fixedly connected to both sides of the outside of the fire hydrant top pipe 9.

[0040] Among them, the water inlet pipe 18 of the fire hydrant extends from the underground of the municipal road. A fire hydrant base 1 is set at the upper end of the water inlet pipe 18. The fire hydrant base 1 is on the ground. The fire hydrant base 1 and the water inlet pipe 18 are sealed together by a flange 19. The lower end of the fire hydrant base 1 has the same aperture as the water inlet pipe 18. The upper side of the fire hydrant base 1 is a bowl shape, which gradually expands from bottom to top. To the upper end of the outside of the fire hydrant base 1, a booster pipe 8 with a smaller aperture than the fire hydrant base 1 is fixedly connected. The water pressure is increased by reducing the pipe diameter, and the upper inner side of the fire hydrant base 1 is It gradually narrows, and the inner side is a slope to reduce the resistance to water flow. A fire hydrant top pipe 9 is fixedly connected to the outer upper end of the booster pipe 8. The inner diameter of the fire hydrant top pipe 9 becomes larger, and water outlet pipes 10 that are connected to the inner part are fixedly connected on both sides of the outside. The outlets of the water outlet pipes on both sides are different. One can be connected to a fire hose, which is a 65mm caliber pipe head, and the other is a 10cm pipe head that can be connected to a fire truck. Sealing covers 16 are set on the outside of the two water outlet pipes 10, and the specifications of the two water outlets can be distinguished by marking the sealing covers 16.

[0041] A circular valve 3 is provided inside the fire hydrant base 1, and the lower side of the valve 3 is a circular sealing rubber block. There is a ridge at the lower end of the interior of the fire hydrant base 1, and the valve 3 can be stuck on the ridge to block the water inlet and stop water from entering the interior of the fire hydrant. In order to facilitate the adjustment of the valve 3 to move up and down, an adjusting rod 12 is fixedly connected to the upper side of the valve 3, and a fixed bracket 2 is provided inside the fire hydrant top pipe 9. The front and rear ends of the lower ends of the fixed bracket are respectively stuck in the front and rear fixed blocks 11 of the lower end of the interior of the fire hydrant top pipe 9 to prevent the fixed bracket 2 from rotating when the adjusting rod 12 is rotated. An upper cover 6 is provided on the upper side of the exterior of the fire hydrant top pipe 9, and a snap ring 7 is provided at the lower end of the upper cover 6. When the upper cover 6 and the fire hydrant top pipe 9 are connected, the fixed bracket 2 can be pressed against the interior of the fire hydrant top pipe 9 to prevent the fixed bracket 2 from moving up and down. As the valve 3 moves upward, the distance between the valve 3 and the side wall of the fire hydrant base 1 becomes larger and larger, which can also control the size of the water flow.

[0042] The adjusting rod 12 passes through the lower side of the interior of the fixed bracket 2 to the upper side, and the upper end passes through the interior of the upper cover 6 to the upper side of the outside, and a hexagonal adjusting head 17 is provided at the upper end to facilitate the rotation of the adjusting rod 12. The adjusting rod 12 and the fixed bracket 2 are threaded together. The rotation of the adjusting rod 12 and the fixation of the fixed bracket 2 can drive the valve 3 to move up and down. A shaft seal 15 is fixedly connected to the upper end of the outside of the upper cover 6 to seal the connection between the upper cover 6 and the adjusting rod 12.

[0043] Example 2:

[0044] The solution in Example 1 is further introduced below in conjunction with a specific working method, as described below:

[0045] In order to prevent the accumulated water inside the fire hydrant from rusting its internal parts when the fire hydrant is not in use, a drain pipe head 4 is fixedly connected to the lower position of the outer rear side of the fire hydrant base 1. The drain pipe head 4 and the interior of the fire hydrant base 1 are connected through, and a movable slot 13 is opened on the outer rear side of the drain pipe head 4. A movable rod 501 is set inside the movable slot 13. A plug 502 with an outer diameter smaller than the inner diameter of the drain pipe head 4 is set at the front end of the movable rod 501 inside the drain pipe head 4. When water flows into the fire hydrant, the water pressure can squeeze the plug 502 backward. A number of evenly distributed drain holes 14 are opened on the outer rear side of the drain pipe head 4. The drain holes 14 can be blocked by the plugs 502 moving backward. Therefore, when water flows into the fire hydrant, the plug 502 blocks the inside of the drain hole 14.

[0046] When the valve 3 blocks the water inlet, the internal water pressure of the fire hydrant decreases. In order to open the drain hole 14, an extrusion spring 503 is sheathed on the outside of the movable rod 501. The movable rod 501 serves as a damping rod for the extrusion spring 503. The extrusion spring 503 is between the rear side of the drain pipe head 4 and the rear side of the plug 502, squeezing the plug 502 forward so that the plug 502 can move forward when the water pressure is low, opening the drain hole 14, and the water inside the fire hydrant flows outward. The elastic force of the extrusion spring 503 is an intermediate value between the pressure on the plug 502 when water flows through the fire hydrant and the pressure on the plug by the accumulated water inside the fire hydrant when the valve 3 is closed. In order to prevent the movable rod 501 from detaching from the inside of the movable slot 13, a stopper 504 is fixedly connected to the rear end of the movable rod 501.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire hydrant for municipal engineering, characterized by: include: A fire hydrant base (1), wherein the inner diameter of the fire hydrant base (1) gradually increases from bottom to top, a boosting pipe (8) is fixedly connected to the upper end of the outer portion of the fire hydrant base (1), the inner diameter of the boosting pipe (8) is smaller than the water inlet hole on the lower side of the inner portion of the fire hydrant base (1), a fire hydrant top pipe (9) is fixedly connected to the upper end of the outer portion of the boosting pipe (8), and water outlet pipes (10) are fixedly connected to both sides of the outer portion of the fire hydrant top pipe (9); A fixed bracket (2), the fixed bracket (2) being arranged inside the fire hydrant top pipe (9), the front and rear ends of the bottom end of the fire hydrant top pipe (9) being provided with clamping blocks (11), the front and rear ends of the lower ends of the fixed bracket (2) being respectively clamped inside the clamping blocks (11); A valve (3), the valve (3) being arranged on the lower side of the interior of the fire hydrant base (1), the valve (3) being adapted to the water inlet hole at the lower end of the interior of the fire hydrant base (1), the upper end of the valve (3) being fixedly connected to an adjusting rod (12), the adjusting rod (12) being threadedly connected to the fixing bracket (2); A drain pipe head (4), the drain pipe head (4) is fixedly connected to the lower end of the rear side of the exterior of the fire hydrant base (1), the interior of the drain pipe head (4) is connected to the interior of the fire hydrant base (1), a movable slot (13) is provided on the rear side of the exterior of the drain pipe head (4), and a plurality of evenly distributed drain holes (14) are provided on the rear side of the exterior of the drain pipe head (4); A self-draining water component (5), wherein the self-draining water component (5) is arranged inside the drain pipe head (4); An upper cover (6) is provided on the upper outer side of the fire hydrant top pipe (9), a shaft seal (15) used in conjunction with the regulating rod (12) is fixedly connected to the upper outer end of the upper cover (6), and a snap ring (7) used in conjunction with the fixing bracket (2) is provided on the lower inner side of the upper cover (6).

2. A municipal engineering fire hydrant according to claim 1, characterized in that: The self-draining water component (5) comprises: A movable rod (501), the movable rod (501) is arranged inside the movable slot (13), and the movable rod (501) is slidably connected to the inside of the movable slot (13); A plug (502), the plug (502) is fixedly connected to the inside of the movable rod (501), the plug (502) is smaller than the inner diameter of the drain pipe head (4), and the plug (502) is adapted to the drain hole (14); An extrusion spring (503), the extrusion spring (503) is located between the plug (502) and the inner rear side wall of the drain pipe head (4), and the extrusion spring (503) is sleeved on the outside of the movable rod (501); A stopper (504) is fixedly connected to the rear end of the movable rod (501), and the stopper (504) is located on the rear side of the exterior of the drain pipe head (4).

3. A municipal engineering fire hydrant according to claim 1, characterized in that: The water outlet pipes (10) are all connected to the inside of the fire hydrant top pipe (9), and the other end of the water outlet pipe (10) connected to the fire hydrant top pipe (9) is provided with a sealing cover (16), and the sealing cover (16) is connected to the inside of the water outlet pipe (10) by threaded connection.

4. A municipal engineering fire hydrant according to claim 1, characterized in that: The upper end of the regulating rod (12) extends to the upper side of the outer portion of the upper cover (6), the regulating rod (12) is movably connected to the interior of the coaxial seal (15), and the upper end of the regulating rod (12) is fixedly connected to an regulating head (17).

5. The municipal engineering fire hydrant according to claim 1, characterized in that: A water inlet pipe (18) is provided on the lower side of the exterior of the fire hydrant base (1), and the fire hydrant base (1) is connected to the water inlet pipe (18) via a flange (19). The water outlet pipes (10) on both sides are respectively used to connect a 65mm fire hose belt and a 10cm fire truck hose belt.

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