Anti-collision ground fire hydrant

Abstract

The invention discloses an anti-collision aboveground fire hydrant which comprises a hydrant body and a hydrant base pre-buried in the ground, and the hydrant body is detachably installed on the hydrant base. The hydrant body is provided with a cover cap and a water outlet cover for sealing the water outlet; the fire hydrant further comprises a valve rod, a first bracket, a second bracket and a check valve, the first bracket and the second bracket are installed in the hydrant body, and the check valve is installed in the hydrant base. The first bracket is provided with a first positioning ring through which the valve rod penetrates and slides, the second bracket is provided with a second positioning ring with internal threads, and the lower section of the valve rod is provided with a threaded section; the upper section of the valve rod penetrates through the cap and is connected with the switch, the lower section of the valve rod sequentially penetrates through the first positioning ring and the second positioning ring, and the threaded section of the valve rod is meshed with the internal threads and moves up and down; when the switch is rotated along with the external wrench, the valve rod moves downwards to eject or close the check valve. The fire hydrant can automatically fall off after being knocked down by a vehicle, a water source is closed by opening the water stop valve, and water loss is prevented; maintenance time is short, maintenance is convenient, and cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of fire hydrants, and in particular to an anti-collision ground fire hydrant. Background Art

[0002] In order to facilitate use during firefighting, fire hydrants are generally installed on the side of the road. The existing ground fire hydrants are not anti-collision, so they are easily damaged by vehicles, causing a large amount of water to erupt instantly, which not only wastes a lot of water resources, but also brings troubles to pedestrians and water supply systems. In addition, because the material of fire hydrants is mostly cast iron, the cost of maintenance and replacement is relatively high. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide an anti-collision ground fire hydrant.

[0004] The present invention is realized through the following technical scheme: an anti-collision ground fire hydrant, comprising a hydrant seat and a hydrant body, the hydrant seat is pre-buried in the ground, and the hydrant body is detachably mounted on the hydrant seat; a cap is mounted on the top of the hydrant body, and a water outlet and a water outlet cover for sealing the water outlet are arranged on the upper part of the hydrant body; the hydrant also comprises a valve stem, a first bracket, a second bracket and a check valve, the first bracket and the second bracket are mounted in the hydrant body, and the check valve is mounted in the hydrant seat; the first bracket is provided with a first positioning ring for the valve stem to pass through and slide, the second bracket is provided with a second positioning ring with an internal thread, and the lower section of the valve stem is provided with a threaded section; the upper section of the valve stem is penetrated in the cap and connected to the switch, the lower section of the valve stem passes through the first positioning ring and the second positioning ring in sequence, and the threaded section of the valve stem engages with the internal thread and moves up and down; as the switch is turned by an external wrench, the valve stem moves downward to push open the check valve, or the valve stem moves upward to loosen and move away from the check valve.

[0005] The cooperation between the first positioning ring and the second positioning ring enables the valve stem to achieve fixed support and directional movement; the threaded section of the valve stem meshes with the internal thread of the second positioning ring, and the valve stem is driven to rotate by turning the switch with an external wrench, so that the valve stem moves up and down. After the valve stem moves downward, the check valve can be opened, so that the water in the bolt seat flows into the bolt body and enters the fire hose and spray gun from the water outlet for fire fighting. The bolt body and the bolt seat can be detachably installed, and the bolt seat is equipped with a check valve, which will automatically fall off after the bolt body is hit by a car. The check valve opens and closes the water source to prevent water loss.

[0006] A ring-shaped baffle is arranged inside the bolt seat; the check valve includes a third bracket, a spring and a valve plate, the third bracket is provided with a third positioning ring, and the third bracket is installed inside the valve seat; a positioning column is arranged at the center of the lower side of the valve plate, and the positioning column is sleeved in the third positioning ring and can slide up and down along it; the spring is sleeved on the outer periphery of the positioning column, and its lower end presses against the third bracket, and its upper end presses against the lower side of the valve plate as the valve plate moves downward; there is a gap between the valve plate and the inner wall of the bolt seat, and the valve plate presses upward against the ring-shaped baffle with the water flow pressure below it, and when the lower end of the valve stem moves downward, it presses against the valve plate to move downward to open the check valve. The spring provides elastic force, always presses the valve plate close to the ring-shaped baffle, seals the opening of the bolt seat, and thus closes the water source. There is a gap between the valve plate and the inner wall of the bolt seat, so that a water flow channel can be formed when the valve plate moves downward to take out the water. The third bracket is used to support the check valve and provide support force for the spring.

[0007] A first sealing ring is provided at the lower side of the annular baffle, and the valve plate is pressed against the first sealing ring after rising. The first sealing ring can provide sealing performance for the valve plate and the annular baffle to prevent water from overflowing.

[0008] The first bracket includes three evenly distributed first supporting feet, wherein the lower ends of the first supporting feet are fixed to the inner wall of the bolt body, and the upper ends of the first supporting feet are fixed to the first positioning ring.

[0009] The second bracket includes three evenly distributed second supporting feet, the lower ends of the second supporting feet are fixed to the inner wall of the bolt body, and the upper ends of the second supporting feet are fixed to the second positioning ring.

[0010] The third bracket includes three evenly distributed third supporting legs, one end of the third supporting leg is fixed to the inner wall of the bolt seat, and the other end of the third supporting leg is fixed to the third positioning ring.

[0011] A second sealing ring is sleeved on the outer periphery of the valve stem at the connection with the cap. The second sealing ring can seal the top section of the valve stem to prevent water from overflowing.

[0012] There are two second sealing rings, and the two second sealing rings are sleeved in parallel on the outer circumference of the valve stem.

[0013] The cap is connected to the top of the bolt body by bolts, and a sealing gasket is provided inside the connection; a drain hole is provided at the bottom of the bolt body, and the drain hole is located below the second bracket. The setting of the sealing gasket seals the connection between the cap and the bolt body to prevent water leakage. The setting of the drain hole can drain the water in the bolt body when the fire hydrant is not in use.

[0014] An upper flange is provided on the outer periphery of the bottom of the bolt body, and a lower flange is provided on the outer periphery of the top of the bolt seat, and the upper flange is aligned with the lower flange and locked with a handcuff; the handcuff comprises a first handcuff ring, a second handcuff ring, a first rotating shaft, a second rotating shaft, a knob and a threaded connecting column; a first U-shaped groove is provided at one end of the first handcuff ring, and the other end of the first handcuff ring is folded outward to form a first connecting piece, a second U-shaped groove is provided in the first connecting piece, and the middle part of the first handcuff ring is bent outward to form a semicircular structure, and the inner side of the first handcuff ring is concave outward to form a first annular groove; one end of the second handcuff ring is hinged in the first U-shaped groove through the first rotating shaft, and the other end of the second handcuff ring is folded outward to form a first connecting piece. The second connecting member is formed into a second connecting member, a third U-shaped groove is provided in the second connecting member, the middle part of the second handcuff ring is bent outward to form a semicircular structure, and the inner side thereof is recessed outward to form a second annular groove; the connecting column is hinged in the second U-shaped groove through the second rotating shaft, and the knob is screwed on the thread of the connecting column; the first handcuff buckle and the handcuff buckle are closed to form a circular ring structure, and the upper flange and the lower flange are aligned and embedded in the first annular groove and the second annular groove; the connecting column is inserted into or withdrawn from the third U-shaped groove after rotating around the second rotating shaft, and the first connecting member and the second connecting member are locked or loosened by rotating the knob. The first rotating shaft provides a rotating hinge point for the second handcuff ring, and the second rotating shaft provides a rotating hinge point for the connecting column. The knob cooperates with the connecting column to lock or loosen the ends of the first connecting member and the second connecting member on the same side.

[0015] Compared with the prior art, the advantages of the present invention are: the fire hydrant will automatically fall off after being knocked down by a car, opening the water check valve to close the water source and prevent water loss; when maintenance is needed, the bolt body or the check valve can be directly replaced on the ground, the maintenance time is short, the maintenance is convenient and the cost is low; when daily maintenance and debris removal are required, it is only necessary to remove the handcuffs, open the bolt body for inspection and removal of debris, and when inspecting the bolt seat, the check valve can be easily removed, and the check valve can be replaced or cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the bolt seat according to an embodiment of the present invention;

[0018] Figure 3 is a top view of a third bracket according to an embodiment of the present invention;

[0019] Figure 4 It is a schematic structural diagram of handcuffs according to an embodiment of the present invention.

[0020] The meanings of the reference numerals in the figure are as follows: 1. bolt seat; 11. annular baffle; 2. bolt body; 21. second sealing ring; 22. sealing gasket; 3. cover cap; 4. outlet cover; 5. valve stem; 6. first bracket; 61. first positioning ring; 7. second bracket; 71. second positioning ring; 8. check valve; 81. third bracket; 82. spring; 83. valve plate; 84. positioning column; 85. first sealing ring; 9. cuff; 91. first cuff ring; 911. first U-shaped groove; 912. first connecting piece; 913. second U-shaped groove; 92. second cuff ring; 921. second connecting piece; 922. second annular groove; 923. third U-shaped groove; 93. first rotating shaft; 94. second rotating shaft; 95. knob; 96. connecting column. DETAILED DESCRIPTION

[0021] The content of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Example

[0023] See also Figures 1 to 4 , is an anti-collision ground fire hydrant, comprising a hydrant seat 1 and a hydrant body 2, the hydrant seat 1 is pre-buried in the ground, and the hydrant body 2 is detachably mounted on the hydrant seat 1; a cap 3 is mounted on the top of the hydrant body 2, and a water outlet and a water outlet cover 4 for sealing the water outlet are arranged on the upper part of the hydrant body 2; it also comprises a valve stem 5, a first bracket 6, a second bracket 7 and a check valve 8, the first bracket 6 and the second bracket 7 are mounted in the hydrant body 2, and the check valve 8 is mounted in the hydrant seat 1; the first bracket 6 is provided with a first positioning ring 61 for the valve stem 5 to pass through and slide, the second bracket 7 is provided with a second positioning ring 71 with an internal thread, and the lower section of the valve stem 5 is provided with a threaded section; the upper section of the valve stem 5 is penetrated in the cap 3 and connected to the switch, the lower section of the valve stem 5 passes through the first positioning ring 61 and the second positioning ring 71 in sequence, and the threaded section of the valve stem 5 engages with the internal thread and moves up and down; as the switch is turned by an external wrench, the valve stem 5 moves downward to push open the check valve 8, or the valve stem 5 moves upward to loosen and move away from the check valve 8.

[0024] The first positioning ring 61 cooperates with the second positioning ring 71 to achieve fixed support and directional movement of the valve stem 5; the threaded section of the valve stem 5 is meshed with the internal thread of the second positioning ring 71, and the valve stem 5 is driven to rotate by turning the switch with an external wrench, so that the valve stem 5 moves up and down. After the valve stem 5 moves downward, the check valve 8 can be opened, so that the water in the bolt seat 1 flows into the bolt body 2 and enters the fire hose and spray gun from the water outlet for fire fighting. The bolt body 2 and the bolt seat 1 can be detachably installed, and the bolt seat 1 is equipped with a check valve 8, which will automatically fall off after the bolt body 2 is hit by a car. The check valve 8 opens and closes the water source to prevent water loss.

[0025] A ring-shaped baffle plate 11 is arranged inside the bolt seat 1; the check valve 8 comprises a third bracket 81, a spring 82 and a valve plate 83, wherein the third bracket 81 is provided with a third positioning ring, and the third bracket 81 is installed inside the valve seat; a positioning column 84 is arranged at the center of the lower side of the valve plate 83, and the positioning column 84 is sleeved in the third positioning ring and can slide up and down along the third positioning ring; the spring 82 is sleeved on the outer periphery of the positioning column 84, and its lower end presses against the third bracket 81, and its upper end presses against the lower side of the valve plate 83 as the valve plate 83 moves downward; there is a gap between the valve plate 83 and the inner wall of the bolt seat 1, and the valve plate 83 presses against the ring-shaped baffle plate 11 upwardly with the water flow pressure below it, and when the lower end of the valve stem 5 moves downward, it presses against the valve plate 83 and moves downward to open the check valve 8. The spring 82 provides elastic force, and always presses against the valve plate 83 close to the ring-shaped baffle plate 11, so as to seal the opening of the bolt seat 1, thereby closing the water source. There is a gap between the valve plate 83 and the inner wall of the bolt seat 1, so that a water flow channel can be formed when the valve plate 83 moves downward to take out the water. The third bracket 81 is used to support the check valve 8 and provide support force for the spring 82.

[0026] A first sealing ring 85 is provided at the lower side of the annular baffle 11, and the valve plate 83 rises and presses against the first sealing ring 85. The first sealing ring 85 can provide sealing performance for the valve plate 83 and the annular baffle 11 to prevent water from overflowing.

[0027] The first bracket 6 includes three evenly distributed first supporting feet, the lower ends of which are fixed to the inner wall of the bolt body 2 , and the upper ends of which are fixed to the first positioning ring 61 .

[0028] The second bracket 7 includes three evenly distributed second supporting feet, the lower ends of which are fixed to the inner wall of the bolt body 2 , and the upper ends of which are fixed to the second positioning ring 71 .

[0029] The third bracket 81 includes three evenly distributed third supporting legs, one end of the third supporting leg is fixed to the inner wall of the bolt seat 1, and the other end of the third supporting leg is fixed to the third positioning ring.

[0030] A second sealing ring 21 is sleeved on the outer periphery of the valve stem 5 at the connection with the cap 3. The second sealing ring 21 can seal the top section of the valve stem 5 to prevent water from overflowing.

[0031] There are two second sealing rings 21 , and the two second sealing rings 21 are sleeved in parallel on the outer circumference of the valve stem 5 .

[0032] The cap 3 is connected to the top of the bolt body 2 by bolts, and a sealing gasket 22 is provided inside the connection; a drain hole is provided at the bottom of the bolt body 2, and the drain hole is located below the second bracket 7. The setting of the sealing gasket 22 seals the connection between the cap 3 and the bolt body 2 to prevent water leakage. The setting of the drain hole can drain the water in the bolt body 2 when the fire hydrant is not used.

[0033] An upper flange is provided at the bottom periphery of the bolt body 2, and a lower flange is provided at the top periphery of the bolt seat 1. The upper flange is aligned with the lower flange and locked with a handcuff 9; the handcuff 9 comprises a first handcuff ring 91, a second handcuff ring 92, a first rotating shaft 93, a second rotating shaft 94, a knob 95 and a threaded connecting column 96; a first U-shaped groove 911 is provided at one end of the first handcuff ring 91, and the other end of the first handcuff ring 91 is folded outward to form a first connecting piece 912, and a second U-shaped groove 913 is provided in the first connecting piece 912, and the middle part of the first handcuff ring 91 is bent outward to form a semicircular structure, and its inner side is recessed outward to form a first annular groove; one end of the second handcuff ring 92 is hinged in the first U-shaped groove 911 through the first rotating shaft 93, and the other end of the second handcuff ring 92 is hinged in the first U-shaped groove 911. The end is folded outward to form a second connecting member 921, and a third U-shaped groove 923 is opened in the second connecting member 921. The middle part of the second handcuff ring 92 is bent outward to form a semicircular structure, and its inner side is recessed outward to form a second annular groove 922; the connecting column 96 is hinged in the second U-shaped groove 913 through the second rotating shaft 94, and the knob 95 is screwed on the thread of the connecting column 96; the first handcuff buckle 9 and the handcuff buckle are closed to form a circular ring structure, and the upper flange and the lower flange are aligned and then embedded in the first annular groove and the second annular groove 922; the connecting column 96 rotates around the second rotating shaft 94 and then snaps into or exits the third U-shaped groove 923, and the first connecting member 912 and the second connecting member 921 are locked or loosened by rotating the knob 95. The first rotating shaft 93 provides a rotating hinge point for the second handcuff ring 92, and the second rotating shaft 94 provides a rotating hinge point for the connecting column 96. The knob 95 cooperates with the connecting column 96 to lock or loosen the ends of the first connecting member 912 and the second connecting member 921 on the same side.

[0034] In this embodiment, the first support leg of the first bracket 6 and the second support leg of the second bracket 7 can be made into support legs arranged obliquely upward or horizontally. The anti-collision ground fire hydrant can be widely used in urban roads, sidewalks, parking lots and the like.

[0035] In this embodiment, the switch in the cap 3 is an existing device. The switch needs to be turned with a wrench to open the fire hydrant and drive the valve stem 5 to rotate. The valve stem 5 is an existing one. In this embodiment, a threaded section is provided on the existing valve stem 5. When in use, the outlet cover 4 is opened first, the hose of the fire gun is connected to the outlet, and then the fire hydrant is opened with a wrench. The valve stem 5 is rotated by turning the wrench, so that the threaded section of the valve stem 5 engages with the internal thread of the second positioning ring 71 and rotates. The valve stem 5 moves downward, and its lower end pushes open the valve plate 83 of the check valve 8. The valve plate 83 is separated from the annular baffle 11 and the first sealing ring 85. The water source in the valve seat flows upward from the gap between the valve plate 83 and the inner wall of the bolt seat 1, enters the bolt body 2, and then enters the hose of the fire gun through the water outlet, thereby realizing the function of spraying water to extinguish fire. When the water spraying fire extinguishing operation is completed, the valve stem 5 is rotated by a wrench to move the valve stem 5 upward, and the water source in the bolt seat 1 pushes up the valve plate 83, and the valve plate 83 returns to the state of pressing against the annular baffle 11 and the first sealing ring 85, thereby stopping the water discharge. At this time, the fire gun can be separated from the water outlet. When a car hits the fire hydrant, the bolt body 2 will be freed from the restraint of the shackle 9 and fall off due to the impact. Due to the left and right of the check valve 8, the water source of the bolt seat 1 will not leak. At this time, it is only necessary to retrieve the bolt body 2 and check whether the bolt body 2 is damaged. If damaged, replace a bolt body 2, and then check whether the shackle 9 is damaged. If the shackle 9 is seriously damaged, directly replace a shackle 9. If the shackle 9 is not seriously damaged, it can be simply processed, and the bolt body 2 and the bolt seat 1 can be fixed together to restore the structure and function of the fire hydrant.

[0036] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention should be included in the patent scope of this case.

Claims

1. An anti-collision ground fire hydrant, characterized in that: It includes a bolt seat and a bolt body, the bolt seat is pre-buried in the ground, and the bolt body is detachably mounted on the bolt seat; a cap is mounted on the top of the bolt body, and a water outlet and an outlet cover for sealing the water outlet are provided on the upper part of the bolt body; it also includes a valve stem, a first bracket, a second bracket and a check valve, the first bracket and the second bracket are installed in the bolt body, and the check valve is installed in the bolt seat; the first bracket is provided with a first positioning ring for the valve stem to pass through and slide, the second bracket is provided with a second positioning ring with an internal thread, and the lower section of the valve stem is provided with a threaded section; the upper section of the valve stem is inserted into the cap and connected to the switch, the lower section of the valve stem passes through the first positioning ring and the second positioning ring in sequence, and the threaded section of the valve stem engages with the internal thread and moves up and down; as the switch is turned by an external wrench, the valve stem moves downward to push open the check valve, or the valve stem moves upward to loosen and move away from the check valve.

2. The anti-collision ground fire hydrant according to claim 1, characterized in that: A circle of annular baffle is provided in the bolt seat; the check valve includes a third bracket, a spring and a valve plate, the third bracket is provided with a third positioning ring, and the third bracket is installed inside the valve seat; a positioning column is provided in the center of the lower side of the valve plate, the positioning column is sleeved in the third positioning ring and can slide up and down along the third positioning ring; the spring is sleeved on the outer periphery of the positioning column, the lower end of which presses against the third bracket, and the upper end of which presses against the lower side of the valve plate as the valve plate moves downward; there is a gap between the valve plate and the inner wall of the bolt seat, the valve plate presses upward against the annular baffle due to the water flow pressure below it, and when the lower end of the valve stem moves downward, it presses against the valve plate to move downward to open the check valve.

3. The anti-collision ground fire hydrant according to claim 2, characterized in that: A first sealing ring is provided at the lower side of the annular baffle, and the valve plate presses against the first sealing ring after rising.

4. The anti-collision ground fire hydrant according to claim 1, characterized in that: The first bracket includes three evenly distributed first supporting feet, wherein the lower ends of the first supporting feet are fixed to the inner wall of the bolt body, and the upper ends of the first supporting feet are fixed to the first positioning ring.

5. The anti-collision ground fire hydrant according to claim 1, characterized in that: The second bracket includes three evenly distributed second supporting feet, the lower ends of the second supporting feet are fixed to the inner wall of the bolt body, and the upper ends of the second supporting feet are fixed to the second positioning ring.

6. The anti-collision ground fire hydrant according to claim 2, characterized in that: The third bracket includes three evenly distributed third supporting legs, one end of the third supporting leg is fixed to the inner wall of the bolt seat, and the other end of the third supporting leg is fixed to the third positioning ring.

7. The anti-collision ground fire hydrant according to claim 1, characterized in that: A second sealing ring is sleeved on the outer periphery of the valve stem at the connection with the cover cap.

8. The anti-collision ground fire hydrant according to claim 7, characterized in that: There are two second sealing rings, and the two second sealing rings are sleeved in parallel on the outer circumference of the valve stem.

9. The anti-collision ground fire hydrant according to claim 1, characterized in that: The cover cap is connected to the top of the bolt body by bolts, and a sealing gasket is provided inside the connection; a drainage hole is opened at the lower part of the bolt body, and the drainage hole is located below the second bracket.

10. The anti-collision ground fire hydrant according to claim 1, characterized in that: An upper flange is provided on the outer periphery of the bottom of the bolt body, and a lower flange is provided on the outer periphery of the top of the bolt seat, and the upper flange is aligned with the lower flange and locked with a handcuff; the handcuff comprises a first handcuff ring, a second handcuff ring, a first rotating shaft, a second rotating shaft, a knob and a threaded connecting column; a first U-shaped groove is provided at one end of the first handcuff ring, and the other end of the first handcuff ring is folded outward to form a first connecting piece, a second U-shaped groove is provided in the first connecting piece, and the middle part of the first handcuff ring is bent outward to form a semicircular structure, and the inner side of the first handcuff ring is concave outward to form a first annular groove; one end of the second handcuff ring is hinged in the first U-shaped groove through the first rotating shaft, and the other end of the second handcuff ring is folded outward to form a first connecting piece. The second connecting member is provided with a third U-shaped groove, the middle part of the second handcuff ring is bent outward to form a semicircular structure, and the inner side thereof is recessed outward to form a second annular groove; the connecting column is hinged in the second U-shaped groove through the second rotating shaft, and the knob is screwed on the thread of the connecting column; the first handcuffs and the buckles are closed to form a circular ring structure, and the upper flange is aligned with the lower flange and then embedded in the first annular groove and the second annular groove; the connecting column is inserted into or withdrawn from the third U-shaped groove after rotating around the second rotating shaft, and the first connecting member and the second connecting member are locked or loosened by rotating the knob.

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