Anti-collision fire hydrant with safety device

Abstract

An anti-collision fire hydrant with a safety device relates to the technical field of anti-collision fire hydrants, and adopts the technical scheme that the anti-collision fire hydrant comprises a connecting pipe, a valve body, a hydrant body and the safety device which are sequentially connected, and the safety device comprises a protective seat and an elastic buffer ring; the protection seat is in a big-end-down circular truncated cone shape, the protection seat is provided with a grounding bolt groove, the center of the protection seat is provided with a containing groove, and the inner wall of the protection seat is provided with a big-end-down conical limiting groove; the elastic buffer ring extends to the position above the flange and shrinks inwards to form a sleeving groove, the inner diameter of the sleeving groove is smaller than the outer diameter of the flange, and a clamping ring in clearance fit with the conical limiting groove is arranged at the end, facing the protection base, of the elastic buffer ring. The valve body is prevented from being directly impacted by the protection seat, and a collision object is guided to the hydrant body; after collision, the elastic buffer ring needs to deform to be separated from the conical limiting groove, kinetic energy is absorbed, the buffer effect on the hydrant body is achieved, and secondary damage caused by the hydrant body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-collision fire hydrants, in particular to an anti-collision fire hydrant with a safety device. Background Art

[0002] CN220847844U discloses an intelligent anti-collision fire hydrant, including a connecting pipe, a valve body and a bolt body connected in sequence, which is used in outdoor ground environments. After the bolt body is knocked down, it is separated from the valve body, so that the valve body remains in a closed state to avoid water leakage due to damage to the valve body. In the prior art, the bolt body is generally painted red to indicate that it is exposed to the ground surface, and the valve body and the connecting pipe are painted black to indicate that they are buried under the ground surface. According to the installation specifications of outdoor fire hydrants, the valve body and the connecting pipe need to be buried under the ground surface, and only the bolt body and its flange are exposed to the ground surface. If a collision occurs, the bolt body absorbs kinetic energy and quickly separates from the valve body. However, due to the limitations of actual construction conditions, most or even all of the valve bodies of many fire hydrants are exposed to the ground surface, and the risk of damage due to collision increases. At the same time, if the collision speed is too high, the bolt body is easy to fly out and cause secondary damage to other objects or pedestrians. Utility Model Content

[0003] In view of the problems in the prior art that the valve body is exposed to the ground and there is a risk of damage, and the hydrant body flies out and causes secondary damage, the utility model provides an anti-collision fire hydrant with a safety device.

[0004] The utility model provides the following technical solutions: an anti-collision fire hydrant with a safety device, comprising a connecting pipe, a valve body and a bolt body connected in sequence, the valve body and the bolt body are connected by a flange, the connecting bolts of the flange are easy-to-break bolts, the valve body is rotatably connected to a screw rod, the bolt body is rotatably connected to a transmission rod, the transmission rod and the screw rod are movably connected through a plug-in coupling, and also includes a safety device, the safety device includes a protective seat surrounding the valve body and an elastic buffer ring surrounding the bolt body;

[0005] The protection seat is in the shape of a truncated cone with a small top and a large bottom. The protection seat is provided with a grounding bolt slot, and a receiving slot is provided in the center of the protection seat. The inner wall of the protection seat is provided with a conical limiting slot with a small top and a large bottom.

[0006] The elastic buffer ring extends above the flange and shrinks inward to form a sleeve groove, the inner diameter of the sleeve groove is smaller than the outer diameter of the flange, and the elastic buffer ring is provided with a clamping ring that matches the clearance of the conical limiting groove at one end facing the protective seat.

[0007] Preferably, a plurality of protective members enclose the protective seat, and each of the protective members is provided with the grounding bolt groove; and a plurality of buffer members enclose the elastic buffer ring.

[0008] Preferably, the inner diameter of the accommodating groove is larger than the outer diameter of the flange.

[0009] Preferably, the outer wall and the inner wall of the protective seat are both provided with a plurality of weight-reducing grooves.

[0010] Preferably, the grounding bolt groove is provided on the bottom surface of the weight-reducing groove on the outer wall of the protective seat.

[0011] The beneficial effects of the utility model are as follows: a protective seat surrounds the portion of the anti-collision fire hydrant valve body exposed on the ground, thereby protecting the valve body from direct impact, and utilizing a shape that is small at the top and large at the bottom to guide the colliding object to the bolt body; the protective seat utilizes a conical limiting groove to clamp an elastic buffer ring, and after a collision, the elastic buffer ring needs to be deformed to be able to escape from the conical limiting groove, thereby absorbing kinetic energy, having a buffering effect on the bolt body, and reducing secondary damage caused by the bolt body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of an embodiment of an anti-collision fire hydrant.

[0013] Figure 2 A three-dimensional schematic diagram of an embodiment of a safety device.

[0014] Figure 3 A schematic diagram of an embodiment of a protective element.

[0015] Figure 4 A schematic diagram of an embodiment of a buffer member.

[0016] Figure numerals: 10, connecting pipe; 20, valve body; 30, bolt body; 41, protective seat; 411, grounding bolt groove; 412, accommodating groove; 413, conical limiting groove; 414, protective member; 415, weight reduction groove; 42, elastic buffer ring; 421, sleeve groove; 422, clamping ring; 423, buffer member. DETAILED DESCRIPTION

[0017] The following is a more detailed description of the implementation of the utility model in conjunction with the drawings and the figure marks, so that those skilled in the art can implement it after reading this specification. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0018] The utility model provides Figure 1-4The anti-collision fire hydrant with a safety device shown in the figure comprises a connecting pipe 10, a valve body 20 and a bolt body 30 connected in sequence. Specifically, the valve body 20 and the bolt body 30 are connected by a flange, and the connecting bolts of the flange are easy-to-break bolts. The easy-to-break bolts are special bolts with reduced shear resistance. The relevant technology can be referred to. The easy-to-break bolts are easily damaged by force. When the bolt body 30 is knocked down, the easy-to-break bolts connecting the bolt body 30 and the flange of the valve body 20 break quickly, so that the bolt body 30 is separated from the valve body 20, reducing the damage to the valve body 20. The valve body 20 is rotatably connected with a screw rod, and a valve seat and a valve disc are also arranged in the valve body 20. The screw rod is threadedly connected to the valve disc. After the moving direction of the valve disc is fixed by means of a guide rail or the like, the distance between the valve disc and the valve seat can be changed by rotating the screw rod to realize the valve function. The bolt body 30 is rotatably connected to a transmission rod, and the transmission rod and the screw rod are movably connected through a plug-in coupling. The plug-in coupling can transmit torque when in normal use, and can quickly separate the transmission rod and the screw rod when a collision occurs, so that the bolt body 30 is completely separated from the valve body 20 to avoid damage to the valve body and water leakage. The specific structure and connection relationship of the above components can refer to a smart anti-collision fire hydrant disclosed in CN220847844U.

[0019] In order to solve the problems of increased damage risk caused by the fire hydrant valve body being mostly or even completely exposed to the ground during actual construction, and secondary injuries caused by the hydrant body flying out, the utility model is also provided with a safety device, which includes a protective seat 41 and an elastic buffer ring 42 .

[0020] Please refer to Figure 1 , 2 3. In this embodiment, the protective seat 41 is surrounded by two protective members 414 to form a ring structure, which is convenient for installation. In other embodiments, the number of protective members 414 may be greater. The protective seat 41 is provided with a receiving groove 412 to surround the valve body 20, and is fixed to the road surface through the grounding bolt groove 411 and the embedded bolts protruding from the ground surface to protect the valve body from direct impact. The protective seat 41 is in the shape of a truncated cone with a small top and a large bottom, which can guide the collision object to the bolt body 30 at the upper part of the valve body 20. The height of the protective seat 41 is 250~350 mm, which is adapted to the height of the valve body 20; the inner diameter of the receiving groove 412 is generally larger than the outer diameter of the valve body 20. Preferably, the inner diameter of the receiving groove 412 is larger than the outer diameter of the flange between the valve body and the bolt body to avoid obstruction of installation when the height of the valve body 20 exposed from the ground is less than the protective seat 41; in this embodiment, the inner diameter of the receiving groove 412 can be 230 mm. The protective seat 41 can be made of plastic. To reduce costs, the outer and inner walls of the protective seat 41 are provided with a plurality of weight-reducing grooves 415 evenly distributed around its central axis, and a grounding bolt groove 411 is provided on the bottom surface of the weight-reducing groove 415 on the outer wall of the protective seat 41. The grounding bolt groove 411 can be a waist-shaped hole.

[0021] Please refer to Figure 1 ,2 4. In this embodiment, the elastic buffer ring 42 is formed by two buffer members 423 to form an annular structure. It can be made of elastic materials such as rubber, and has an inner cavity that covers the flange. The end of the elastic buffer ring 42 that is away from the protective seat 41 extends to the top of the flange and shrinks inward to form a sleeve groove 421; a spacing is provided between the sleeve groove 421 and the bolt body 30, covering the lower part of the bolt body 30 and its flange. A clamping ring 422 is provided at the end of the elastic buffer ring 42 facing the protective seat 41, and a conical limiting groove 413 with a small top and a large bottom is provided at the top of the inner wall of the protective seat 41. The clamping ring 422 and the conical limiting groove 413 are clearance-matched to clamp the elastic buffer ring 42 in the conical limiting groove 413. The height of the elastic buffer ring 42 can be 150~250mm. The inner diameter of the sleeve groove 421 is smaller than the outer diameter of the flange. After the collision, the bolt body 30 is separated from the valve body 20 and pulls the elastic buffer ring 42 to move. The elastic buffer ring 42 needs to be deformed to escape from the conical limiting groove 413, absorb kinetic energy, play a buffering role on the bolt body, and reduce secondary damage caused by the bolt body.

[0022] During installation, the fire hydrant can be installed according to the normal process, and bolts can be embedded around the fire hydrant. After the fire hydrant is installed, the two buffers 423 can be enclosed outside the bolt body 30, and then the two protective members 414 can be enclosed to form a protective seat 41, the valve body 20 is surrounded inside and the two buffers 423 are clamped, and then the embedded bolts are inserted into the grounding bolt groove 411, and fixed with the fastening nut to complete the installation.

[0023] The above are one or more embodiments of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An anti-collision fire hydrant with a safety device, comprising a connecting pipe, a valve body and a bolt body connected in sequence, wherein the valve body and the bolt body are connected by a flange, the connecting bolts of the flange are breakable bolts, the valve body is rotatably connected to a screw rod, the bolt body is rotatably connected to a transmission rod, the transmission rod and the screw rod are movably connected by a plug-in coupling, and characterized in that: It also includes a safety device, which includes a protective seat surrounding the valve body and an elastic buffer ring surrounding the bolt body; The protection seat is in the shape of a truncated cone with a small top and a large bottom. The protection seat is provided with a grounding bolt slot, and a receiving slot is provided in the center of the protection seat. The inner wall of the protection seat is provided with a conical limiting slot with a small top and a large bottom. The elastic buffer ring extends above the flange and shrinks inward to form a sleeve groove, the inner diameter of the sleeve groove is smaller than the outer diameter of the flange, and the elastic buffer ring is provided with a clamping ring that matches the clearance of the conical limiting groove at one end facing the protective seat.

2. The anti-collision fire hydrant with a safety device according to claim 1, characterized in that: A plurality of protective members enclose the protective seat, and each of the protective members is provided with the grounding bolt slot; a plurality of buffer members enclose the elastic buffer ring.

3. The anti-collision fire hydrant with a safety device according to claim 1, characterized in that: The inner diameter of the accommodating groove is greater than the outer diameter of the flange.

4. The anti-collision fire hydrant with a safety device according to claim 1, characterized in that: The outer wall and the inner wall of the protection seat are both provided with a plurality of weight-reducing grooves.

5. The anti-collision fire hydrant with a safety device according to claim 4, characterized in that: The grounding bolt groove is arranged on the bottom surface of the weight-reducing groove on the outer wall of the protection seat.

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