Large-caliber fire hydrant capable of being emptied quickly

Abstract

The utility model discloses a quick emptying large-caliber fire hydrant which comprises a hydrant body, a valve rod is arranged in the hydrant body, the top of the valve rod is connected with a top cover, the lower end of the valve rod is connected with a valve element, a valve seat is connected to the inner wall of the lower portion of the hydrant body, a water inlet is formed in the middle of the valve seat, and the circumference of the valve seat is connected with the inner wall of the hydrant body in a sealed mode. The valve element penetrates through the water inlet of the valve seat, is located below the valve seat and is used for being in sealing fit with the water inlet. A water drain pipe is arranged in the hydrant body, one end of the water drain pipe is a conical opening which is gradually enlarged upwards, the other end of the water drain pipe penetrates through the wall face of the hydrant body to be communicated with the outside of the hydrant body, the conical opening is arranged upwards, the upper end of the conical opening is lower than a soil freezing line, and a sealing cone used for being inserted into the conical opening in a sealed mode is connected to the valve rod. When the valve rod moves downwards and the valve element is separated from the water inlet, the sealing cone is inserted into the conical opening downwards. When the valve rod moves upwards and the valve element is in sealing fit with the water inlet, the sealing cone moves upwards to be separated from the conical opening.

Description

Technical Field

[0001] The utility model relates to a large-caliber fire hydrant with rapid emptying, belonging to the technical field of fire-fighting equipment. The utility model relates to a large-caliber fire hydrant with simple opening and closing and effective emptying, belonging to the technical field of fire-fighting equipment. Background Art

[0002] As petrochemical plants scale up, the water supply capacity of fire protection systems and fire trucks has increased significantly, but the water supply capacity of individual fire hydrants has not. To accommodate the high-flow water supply from fire trucks, large petrochemical enterprises need to add a sufficient number of high-flow fire hydrants to facilitate water supply for fire trucks. The water supply capacity of a single high-flow fire hydrant can reach 200L / s. However, the flow rate of fire hydrants currently on the market is generally only 10-30L / s, and there are no mature high-flow products. In cold regions or during winter, the water in the fire hydrants above the ground freezing line must be drained during normal times to prevent ice and cracking.

[0003] Chinese patent publication number CN214005837U, titled "A High-Flow Fire Hydrant," discloses a high-flow fire hydrant that utilizes a large nominal diameter water inlet and four large nominal diameter outlets for fire trucks. Its water supply capacity reaches 200L / s, capable of quickly and reliably supplying water to two to four high-flow fire trucks. However, when not in operation, it cannot drain water above the freezing point. In cold regions or during severe winter weather, ice may form inside the fire hydrant, rendering it unusable in the event of a fire. Utility Model Content

[0004] The purpose of the utility model is to provide a large-diameter fire hydrant with rapid emptying, so as to solve the technical problems that the large-flow fire hydrants in the prior art cannot empty the water above the soil freezing line and cannot be used when the fire hydrants are frozen inside.

[0005] The utility model adopts the following technical solutions: a large-caliber fire hydrant with rapid emptying, which includes a plug body, the upper part of the side wall of the plug body is connected to a water intake interface, the top of the plug body is connected to a top cover, a valve stem is provided inside the plug body, the top of the valve stem is connected to the top cover, the lower end of the valve stem is connected to a valve core, a valve seat is connected to the inner wall of the lower part of the plug body, a water inlet is provided in the middle of the valve seat, the circumference of the valve seat is sealed with the inner wall of the plug body, the valve core passes through the water inlet of the valve seat, and the valve core is located below the valve seat for sealing with the water inlet; A drain pipe is provided in the plug body, one end of the drain pipe is a tapered opening that gradually increases upward, and the other end of the drain pipe passes through the wall of the plug body and is communicated with the outside of the plug body. The tapered opening is set upward, and the upper end of the tapered opening is lower than the soil freezing line. The valve stem is connected to a sealing cone for sealingly inserting into the tapered opening; when the valve stem moves downward and the valve core is separated from the water inlet, the sealing cone is inserted downward into the tapered opening; when the valve stem moves upward and the valve core is sealed with the water inlet, the sealing cone moves upward and separates from the tapered opening.

[0006] The sealing cone is connected to the valve stem through a connecting rod. The connecting rod adopts a 90° bent structure. One end of the connecting rod is fixedly connected to the valve stem, and the other end of the connecting rod is fixedly connected to the sealing cone.

[0007] The drain pipe passes through the valve seat and is sealed and fixedly connected to the valve seat. After passing through the valve seat, the drain pipe bends toward the wall of the plug body and passes through the wall of the plug body in a sealed manner.

[0008] The valve core is a tapered structure that is larger at the top and smaller at the bottom, and the maximum diameter of the valve core is smaller than the diameter of the water inlet.

[0009] A guide sleeve is provided in the water inlet, and the valve stem passes through the guide sleeve.

[0010] The valve stem is connected to a limit rod, which adopts a 90° bent structure. One end of the limit rod is horizontally arranged and fixedly connected to the valve stem, and the other end is downward for contacting the valve seat.

[0011] There are more than two limit rods, and the limit rods are evenly distributed around the valve stem.

[0012] A reinforcing rib is fixedly connected between the valve seat and the inner wall of the plug body.

[0013] The bolt body is made of a steel pipe with a diameter greater than 250 mm; the sealing cone is made of elastic rubber.

[0014] The number of the water intake interfaces is more than two.

[0015] The beneficial effects of the present invention are as follows: when a fire hydrant is opened, the valve stem moves downward, separating the valve core from the water inlet. Water flows from the water inlet into the hydrant body and is discharged through the water intake port for use by fire trucks or water guns. As the valve stem moves downward, the connecting rod simultaneously drives the sealing cone downward a certain distance, allowing the elastic sealing cone to fit against the tapered opening of the drain pipe, effectively preventing fire water from flowing out through the drain pipe. The valve stem moves upward, sealing the water inlet and closing the fire hydrant. The upward movement of the valve stem simultaneously drives the sealing cone upward a certain distance, allowing residual water in the hydrant body above the soil freezing line to be discharged from the drain pipe, ensuring that the space in the hydrant body above the soil freezing line is vacant, thereby meeting anti-freeze requirements in outdoor environments. Because the valve core is located below the valve seat, when the fire hydrant is closed, the hydrostatic pressure acting on the valve core can be used to tightly fit the valve core against the valve seat, thereby strengthening the seal and ensuring that no water enters the hydrant body above the valve seat. This new model links the emptying and closing actions of the fire hydrant, achieving simultaneous drainage when the fire hydrant is closed, thus preventing the hydrant from freezing inside and becoming unusable. This new model fills the gap in high-flow fire hydrant products on the market, is easy to manufacture, and has the advantages of a compact structure, easy installation, and flexible operation.

[0016] Preferably, the valve seat is connected to the sealing cone through a connecting rod with a 90° bend structure, so that the up and down movement of the sealing cone is more stable.

[0017] Preferably, the two fixed positions of the valve seat and the bolt body on the drain pipe make the connection of the drain pipe more stable.

[0018] Preferably, the guide sleeve guides and limits the up and down movement of the valve stem to prevent the valve stem from deflecting when moving up and down.

[0019] Preferably, when the valve stem moves downward, the conical valve core can overcome the water pressure, thereby opening the water inlet.

[0020] Preferably, the limit rod limits the downward movement of the valve stem, and the downward movement of the valve stem synchronously drives the limit rod downward. When the limit rod contacts the valve seat, the valve seat generates resistance to the downward movement of the valve stem. At this time, the valve stem no longer moves downward, that is, stops opening, which protects the fire hydrant and prevents water from leaking from the top.

[0021] Preferably, the reinforcing ribs make the connection between the valve seat and the bolt body more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a large-caliber fire hydrant with rapid emptying according to an embodiment of the present invention (fire hydrant in open state);

[0023] Figure 2 yes Figure 1Schematic diagram of a large-diameter, fast-draining fire hydrant in a closed state;

[0024] Figure 3 yes Figure 1 A top view of

[0025] Figure 4 yes Figure 2 AA cross-section diagram.

[0026] The figures are marked as follows: 1-bolt body, 1.1-water intake interface, 1.2-top cover, 1.3-control valve, 2-valve seat, 2.1-water inlet, 3-valve core, 4-sealing ring, 5-valve stem, 6-drain pipe, 6.1-conical mouth, 7-sealing cone, 8-reinforcement rib, 9-limiting rod, 10-connecting rod, 11-guide sleeve. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figures 1 to 4 As shown, a large-diameter fire hydrant for rapid emptying according to an embodiment of the present invention includes a bolt body 1, which is made of a steel pipe with a diameter greater than 250 mm. The bolt body of this embodiment can be made of a large-diameter steel pipe of 400 mm; a water intake interface 1.1 is connected to the upper part of the side wall of the bolt body 1, and the number of the water intake interfaces 1.1 is more than two. Figure 3 It is shown in FIG. 1 that there are five water intake interfaces 1.1 on the plug body, and each water intake interface 1.1 is provided with a control valve 1.3.

[0029] A top cover 1.2 is connected to the top of the bolt body 1. A valve stem 5 is provided inside the bolt body 1. The top of the valve stem 5 is connected to the top cover 1.2, and the lower end of the valve stem 5 is connected to a valve core 3. A valve seat 2 is connected to the inner wall of the lower portion of the bolt body 1. Reinforcing ribs 8 are fixedly connected between the valve seat 2 and the inner wall of the bolt body 1. A water inlet 2.1 is provided in the middle of the valve seat 2. The circumference of the valve seat 2 is sealed with the inner wall of the bolt body 1. The valve core 3 passes through the water inlet 2.1 of the valve seat 2. The valve core 3 is located below the valve seat 2 for sealing with the water inlet 2.1. A sealing ring 4 is provided at the water inlet 2.1. The valve core 3 is a conical structure that is larger at the top and smaller at the bottom. The maximum diameter of the valve core 3 is smaller than the diameter of the water inlet 2.1.

[0030] The bolt body 1 is provided with a drain pipe 6, one end of which is a tapered opening 6.1 that gradually increases in size upwards, and the other end of the drain pipe 6 passes through the wall of the bolt body 1 and is connected to the outside of the bolt body 1. The tapered opening 6.1 is set upwards, and the upper end of the tapered opening 6.1 is below the soil freezing line. The valve stem 5 is connected to a sealing cone 7 for sealingly inserting into the tapered opening 6.1, and the sealing cone 7 is made of elastic rubber. The drain pipe 6 passes through the valve seat 2, and the drain pipe 6 is sealed and fixedly connected to the valve seat 2. After passing through the valve seat 2, the drain pipe 6 is bent toward the wall of the bolt body 1 and passes through the wall of the bolt body 1 in a sealed manner. The sealing cone 7 is connected to the valve stem 5 via a connecting rod 10. The connecting rod 10 adopts a 90° bending structure. One end of the connecting rod 10 is fixedly connected to the valve stem 5, and the other end of the connecting rod 5 is fixedly connected to the sealing cone 7. When the valve stem 5 moves downward and the valve core 3 is separated from the water inlet 2.1, the sealing cone 7 is inserted downward into the tapered opening 6.1; when the valve stem 5 moves upward and the valve core 3 is sealed with the water inlet 4.1, the sealing cone 7 moves upward and is separated from the tapered opening 6.1.

[0031] A guide sleeve 11 is provided within the water inlet 4.1 and is connected to the valve seat. The valve stem 5 passes through the guide sleeve 11. A limit rod 9 is connected to the valve stem 5. The limit rod 9 has a 90° bend. One end of the limit rod 9 is horizontally positioned and fixedly connected to the valve stem 5, while the other end faces downward to contact the valve seat 4. There are at least two limit rods 9, evenly distributed around the circumference of the valve stem 5. In this embodiment, there are two limit rods 9.

[0032] When in use, the bolt body 1 is vertically installed on the fire water supply pipe, the valve seat 2 is welded inside the bolt body 1, the valve seat 2 is provided with a sealing ring 4, and a water inlet 4.1 and a guide sleeve 11 are provided in the middle. The drain pipe 6 is installed in the bolt body 1, and the upper end of the drain pipe 6 is designed to be a conical structure consistent with the shape of the sealing cone 7.

[0033] like Figure 1 As shown, when the fire hydrant is opened, the valve stem 5 moves downward, the valve core 3 is separated from the water inlet 2.1, and water flows into the hydrant body 1 through the water inlet 2.1 and is discharged through the water intake interface 1.1 for use by fire trucks or water guns; while the valve stem 5 moves downward, the connecting rod 10 synchronously drives the sealing cone 7 to move downward a certain distance, so that the sealing cone 7 with a certain elasticity fits with the tapered mouth 6.1 of the drain pipe 6, effectively preventing the fire water from flowing out through the drain pipe 6.

[0034] like Figure 2 As shown, the valve stem 5 moves upward, and the valve core 3 moves upward to seal the water inlet 2.1. At this time, the fire hydrant is closed; the upward movement of the valve stem 5 synchronously drives the sealing cone 7 to move up a certain distance, and the residual water in the plug body 1 above the soil freezing line is discharged from the drain pipe 6, ensuring that the plug body space above the soil freezing line is vacant to meet the anti-freeze requirements in outdoor environments.

[0035] Because the valve core 3 is located below the valve seat 2, the hydrostatic pressure acting on the valve core 3 when the fire hydrant is closed tightly seals the valve core against the valve seat, ensuring a tight seal and preventing water from entering the hydrant body above the valve seat 2. When the fire hydrant is opened, the water pressure creates some resistance to the downward movement of the valve core 3. To address this, the bottom of the valve core 3 is designed with a tapered shape to facilitate the downward movement of the valve stem 5 (typically, a wrench is used to overcome the torque when rotating the valve stem).

[0036] When the fire hydrant is gradually opened, the valve stem 5 moves downward, synchronously driving the limit rod 9 to move down a certain distance. When the limit rod 9 moves downward and contacts the valve seat 2, the valve seat 2 generates resistance to the downward movement of the valve stem 5. At this time, the valve stem 5 no longer moves downward, that is, it stops opening, which protects the fire hydrant and prevents water from leaking from the top.

[0037] The bolt body can be made of large-diameter finished (diameter not less than 250mm) steel pipes and fittings and connected to the fire water supply pipe.

[0038] The utility model is convenient to manufacture and use, and has the advantages of compact structure, easy installation, flexible opening and closing, effective emptying, etc.

[0039] The above illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not in any way limit the scope of protection of the present invention. Any technical solution obtained by equivalent substitution or other methods falls within the scope of protection of the present invention. Any portion not covered by the present invention is equivalent to or can be implemented using existing technology.

Claims

1. A large-caliber fire hydrant for rapid emptying, comprising a hydrant body, a water intake interface connected to the upper part of the hydrant body side wall, a top cover connected to the top of the hydrant body, a valve stem provided inside the hydrant body, the top of the valve stem connected to the top cover, and a valve core connected to the lower end of the valve stem, characterized in that: A valve seat is connected to the inner wall of the lower part of the plug body, and a water inlet is opened in the middle of the valve seat. The circumference of the valve seat is sealed with the inner wall of the plug body, and the valve core passes through the water inlet of the valve seat. The valve core is located below the valve seat and is used for sealing with the water inlet. A drain pipe is provided in the plug body, and one end of the drain pipe is a tapered mouth that gradually increases upward, and the other end of the drain pipe passes through the wall of the plug body and is connected to the outside of the plug body. The tapered mouth is set upward, and the upper end of the tapered mouth is lower than the soil freezing line. A sealing cone is connected to the valve stem and is used for sealing and inserting into the tapered mouth. When the valve stem moves downward and the valve core is separated from the water inlet, the sealing cone is inserted downward into the tapered mouth. When the valve stem moves upward and the valve core is sealed with the water inlet, the sealing cone moves upward and is separated from the tapered mouth.

2. The large-caliber fire hydrant for rapid emptying according to claim 1, characterized in that: The sealing cone is connected to the valve stem through a connecting rod. The connecting rod adopts a 90° bending structure. One end of the connecting rod is fixedly connected to the valve stem, and the other end of the connecting rod is fixedly connected to the sealing cone.

3. The large-caliber fire hydrant for rapid emptying according to claim 1, characterized in that: The drain pipe passes through the valve seat, and is sealed and fixedly connected to the valve seat. After passing through the valve seat, the drain pipe is bent toward the wall of the bolt body and passes through the wall of the bolt body in a sealed manner.

4. The large-caliber fire hydrant for rapid emptying according to claim 1, characterized in that: The valve core is a conical structure with a larger upper portion and a smaller lower portion, and the maximum diameter of the valve core is smaller than the diameter of the water inlet.

5. The large-caliber fire hydrant for rapid emptying according to claim 1, characterized in that: A guide sleeve is arranged in the water inlet, and the valve stem passes through the guide sleeve.

6. The large-caliber fire hydrant for rapid emptying according to claim 1, characterized in that: The valve stem is connected with a limit rod, which adopts a 90° bent structure. One end of the limit rod is horizontally arranged and fixedly connected to the valve stem, and the other end faces downward to contact the valve seat.

7. The large-diameter fire hydrant for rapid emptying according to claim 6, characterized in that: There are more than two limit rods, and the limit rods are evenly distributed around the valve stem.

8. The large-caliber fire hydrant for rapid emptying according to claim 1, characterized in that: A reinforcing rib is fixedly connected between the valve seat and the inner wall of the plug body.

9. The large-caliber fire hydrant for rapid emptying according to claim 1, characterized in that: The bolt body is made of a steel pipe with a diameter greater than 250 mm; the sealing cone is made of elastic rubber.

10. The large-caliber fire hydrant for rapid emptying according to claim 1, characterized in that: The number of the water intake interfaces is more than two.

Images