Double-guide self-sealing anti-collision outdoor fire hydrant

Abstract

The utility model discloses a double-guide self-sealing anti-collision outdoor fire hydrant, which comprises a valve body, a valve clack component, a hydrant body, a transmission rod, a transmission nut and the like, and is mainly characterized in that a connecting rod is mounted on the transmission nut, and the valve clack component elastically and upwards pushes and is in contact with the lower end of the connecting rod; in this way, the valve clack assembly can ascend and move to close the water inlet hole under elastic upward pushing or can descend and move to open the water inlet hole under downward pushing of the connecting rod. Meanwhile, no matter the outdoor fire hydrant is in a closed state or an open state, once the hydrant body part is accidentally impacted and damaged and the lower end of the connecting rod is separated from the contact with the valve clack assembly, the valve clack assembly is elastically and upwards pushed to automatically close the water inlet hole, so that the waste of a large amount of water resources is avoided, and the accident loss is reduced. In addition, the valve clack assembly achieves double-guide lifting through assistance of a guide hole and a guide rib, so that the movement concentricity of the valve clack assembly during lifting opening and closing is guaranteed, and the situation that the stability of the opening and closing performance of the valve clack assembly is affected after accidental impact is avoided.

Description

Technical Field

[0001] The utility model relates to an outdoor fire hydrant, in particular to a double-guided self-sealing anti-collision outdoor fire hydrant. Background Art

[0002] The anti-collision outdoor fire hydrant is a kind of outdoor safety fire hydrant, and its structure mainly includes a valve body, a water inlet elbow at the bottom of the valve body, a plug body at the top of the valve body, and a plug cover at the top of the plug body. The valve body is provided with a water inlet hole and a valve disc assembly, and a plurality of water outlet interfaces are provided on one side of the top of the plug body. A transmission rod is provided in the plug cover, and the lower end of the transmission rod extends into the plug body and is threadedly connected to the transmission nut. When the part of the plug body exposed to the ground is damaged by an accidental impact, the fire water will not overflow, thereby protecting water resources and reducing accident losses. However, the traditional anti-collision outdoor fire hydrants on the market can only ensure that the valve disc assembly is still in a closed state when it is accidentally impacted and damaged in the closed state, ensuring that the fire water will not overflow, but when it is accidentally impacted and damaged in the open state, the valve disc assembly cannot be closed automatically, and the fire water will spray out at this time, causing a large amount of water resources Waste and even cause safety accidents. At the same time, the valve disc assembly of the traditional anti-collision outdoor fire hydrant is a single-guide structure, and the concentricity of the movement cannot be guaranteed when lifting and opening and closing, especially after being accidentally impacted, it is easier to affect the stability of the opening and closing performance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a double-guided self-sealing anti-collision outdoor fire hydrant which can automatically shut off the fire water in a closed state or an open state when the hydrant body is damaged by an accidental impact, and the lifting and opening and closing performance of the valve flap assembly is more stable.

[0004] The technical problem of the utility model is achieved through the following technical solutions:

[0005] A double-guided self-sealing anti-collision outdoor fire hydrant comprises a valve body, a water inlet elbow at the bottom of the valve body, a bolt body at the top of the valve body and a bolt cover at the top of the bolt body; the valve body is provided with a water inlet hole and a valve flap assembly, one side of the top of the bolt body is provided with a plurality of water outlet interfaces, a transmission rod is provided in the bolt cover, the lower end of the transmission rod extends into the bolt body and is threadedly connected to a transmission nut, and the transmission nut is driven by the transmission rod to form a lifting movement, a connecting rod is installed on the transmission nut, and the valve flap assembly is elastically pushed upward to contact the lower end of the connecting rod; the transmission rod drives the transmission nut to drive the connecting rod to move upward, and the valve flap assembly is elastically pushed upward to move upward synchronously to close the water inlet hole, or the transmission rod drives the transmission nut to drive the connecting rod to move downward, and the connecting rod pushes the valve flap assembly to move downward synchronously to open the water inlet hole.

[0006] The lower end of the connecting rod is separated from the valve flap assembly, and the valve flap assembly is elastically pushed upward to move upward and automatically close the water inlet hole.

[0007] The valve flap assembly includes a valve flap rod, a lower coupling installed at the upper end of the valve flap rod, and a valve flap installed at the lower end of the valve flap rod and located below the water inlet hole. The valve flap rod is provided with a set elastic element on the outside, which elastically pushes the lower coupling upward, thereby driving the valve flap to automatically rise and move to close the water inlet hole.

[0008] The top of the lower coupling is provided with a top groove, the groove wall of which is provided with a slip arc inclined outwards, and the elastic element elastically pushes the lower coupling upwards and makes the lower end of the connecting rod contact the top groove of the lower coupling.

[0009] The middle part of the valve body is provided with a guide hole for guiding the valve flap rod to form axial lifting and lowering movement, and the inner wall of the valve body is provided with a plurality of guide ribs for guiding the valve flap to form axial lifting and lowering movement.

[0010] A middle diaphragm is arranged in the valve body, and the guide hole is arranged in the middle of the middle diaphragm. The valve flap assembly moves downward and drives the lower coupling to contact the middle diaphragm to form a descending stroke limit.

[0011] A surplus water discharge device is provided on one side of the valve body, and the surplus water discharge device is adjacent to the water inlet hole and higher than the water inlet hole.

[0012] The residual water discharge device includes a main body installed on one side of the valve body, a drainage hole axially penetrating into the valve body is arranged in the main body, and a sealing inner shoulder and a closing ball are arranged in the middle of the drainage hole. The closing ball is elastically pushed to fit the sealing inner shoulder to close the drainage hole.

[0013] A locked and fixed valve seat is arranged in the water inlet hole, and the valve flap moves axially up and down, and contacts the valve seat to close the water inlet hole or separates from the valve seat to open the water inlet hole.

[0014] A plurality of breakable bolts for fastening and connecting are arranged between the valve body and the bolt body.

[0015] Compared with the prior art, the utility model mainly has a connecting rod installed on the driving nut, and the valve flap assembly is elastically pushed upward to contact the lower end of the connecting rod; in this way, when the driving rod drives the driving nut to drive the connecting rod to move upward, the valve flap assembly will be elastically pushed upward and synchronously move upward to close the water inlet hole, or when the driving rod drives the driving nut to drive the connecting rod to move downward, the connecting rod will push the valve flap assembly to move downward synchronously to open the water inlet hole. Therefore, according to the above structural design, no matter whether the outdoor fire hydrant is in a closed state or an open state, once the bolt body part exposed to the ground is damaged by an accidental impact, it will break contact with the valve flap assembly with the lower end of the connecting rod. At this time, the valve flap assembly will be elastically pushed upward to move upward and automatically close the water inlet hole, that is, a self-sealing function is formed, thereby effectively ensuring that the fire water can be automatically closed at any time, avoiding a large amount of waste of water resources and reducing accident losses. At the same time, the valve flap rod of the valve flap assembly can be guided by the guide hole in the middle of the valve body to form axial lifting and lowering movement, and the valve flap of the valve flap assembly can be guided by a number of guide ribs on the inner wall of the valve body to form axial lifting and lowering movement. Therefore, the valve flap assembly forms a double guide structure, thereby ensuring the concentricity of the valve flap assembly during lifting, opening and closing, and the stability of the opening and closing performance of the valve flap assembly will not be affected even if it is accidentally hit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the utility model in a closed state.

[0017] Figure 2 for Figure 1 A-A section view.

[0018] Figure 3 It is a cross-sectional view of the utility model in an open state.

[0019] Figure 4 This is a cross-sectional view of the bolt body of the utility model with the lower end of the connecting rod being out of contact with the valve flap assembly.

[0020] Figure 5 A cross-sectional view of the valve body.

[0021] Figure 6 for Figure 5 B-B section view.

[0022] Figure 7 This is a cross-sectional view of the lower coupling.

[0023] Figure 8 Schematic diagram of the valve seat structure.

[0024] Fig. 9 for Figure 8 Bottom view of .

[0025] Fig.10It is a cross-sectional view of the residual water discharge device. DETAILED DESCRIPTION

[0026] The embodiments of the present invention will be described in detail below according to the above-mentioned drawings.

[0027] like Figure 1 to Figure 10 As shown, 1. water inlet elbow, 2. valve body, 21. water inlet hole, 22. middle partition, 23. guide hole, 24. guide rib, 3. valve disc assembly, 31. valve disc rod, 32. lower coupling, 321. top groove, 322. slip arc, 33. valve disc, 34. elastic element, 4. bolt body, 41. water outlet interface, 42. guide, 5. bolt cover, 6. transmission rod, 61. transmission nut, 62. upper coupling, 63. connecting rod, 64. retaining spring, 7. breakable bolt, 8. valve seat, 81. locking boss, 9. residual water discharge device, 91. main body, 92. drain hole, 93. closing ball, 94. internal spring, 95. sealing inner shoulder.

[0028] A double-guided self-sealing anti-collision outdoor fire hydrant, such as Figure 1~Figure 4 As shown, it is mainly composed of a valve body 2, a water inlet elbow 1 sealed and installed at the bottom of the valve body, a bolt body 4 sealed and installed at the top of the valve body, and a bolt cover 5 sealed and installed at the top of the bolt body.

[0029] The valve body 2 and the water inlet elbow 1 are usually buried underground, while the bolt body 4 and the bolt cover 5 are exposed above the ground, and a sealing gasket is provided between the valve body 2 and the bolt body 4 for sealing, and a plurality of breakable bolts 7 are used for connection and tightening. The breakable bolts are designed to not only ensure reliable connection strength, but also, once the bolt body part exposed above the ground is damaged by accidental impact, the breakable bolts 7 will break first, ensuring that other parts will not be damaged after the impact, and maintenance is also very convenient, only the breakable bolts need to be replaced, and the bolt body 4 that has been knocked down can be reconnected and tightened, thereby reducing the impact loss.

[0030] A plurality of water outlet interfaces 41 are provided on one side of the top of the bolt body 4, and a transmission rod 6 is provided in the bolt cover 5. The transmission rod is installed by a retaining spring 64 and forms a sealed rotation in the bolt cover 5 through a pair of O-rings as dynamic seals. The lower end of the transmission rod 6 extends into the bolt body 4 and is threadedly connected to a transmission nut 61, which is then installed with a connecting rod 63 through an upper coupling 62. The inner wall of the bolt body 4 is also provided with an integrally cast guide member 42, which can usually be selected as a guide strip or a guide rib, so as to guide the upper coupling 62 to only move up and down. Therefore, when the transmission nut 61 is driven by the transmission rod 6, the rotational motion can be converted into a lifting motion through the guiding cooperation between the upper coupling 62 and the guide member 42, thereby driving the connecting rod 63 to move up and down synchronously.

[0031] The valve body 2 is provided with a water inlet hole 21 and a valve flap assembly 3. The water inlet hole 21 and the valve body 2 are on the same axial line. A threaded valve seat 8 is provided in the water inlet hole 21. The outer circumferential surface of the valve seat is provided with a plurality of circumferentially evenly distributed locking bosses 81 to form a locking fixation.

[0032] The valve flap assembly 3 includes a valve flap rod 31, a lower coupling 32 installed at the upper end of the valve flap rod, and a valve flap 33 installed at the lower end of the valve flap rod and located below the water inlet hole 21; a circular top groove 321 is provided at the top of the lower coupling 32, and the groove wall of the top groove is provided with an outwardly inclined slip arc 322, so the cross-section of the entire top groove 321 is similar to an inverted "eight" shape; the valve flap 33 is made of a ductile iron valve flap seat that is vulcanized and rubber-coated as a whole, and has stable sealing performance and a long service life.

[0033] The valve body 2 is provided with a middle diaphragm 22, and a guide hole 23 is provided in the middle of the middle diaphragm for the valve flap rod 31 to pass through and guide the valve flap rod to form axial lifting and lowering movement, and a plurality of guide ribs 24 are provided on the inner wall of the valve body 2. For example, in this embodiment, three circumferentially evenly distributed guide ribs are designed, each of which extends axially, and the valve flap 33 is guided to form axial lifting and lowering movement through these three guide ribs 24. At this time, the outer circumferential surface of the valve flap 33 can be adaptively designed with guide grooves or guide notches for guiding cooperation, and the three guide ribs 24 also play the role of reinforcing ribs, which can be used to increase the strength of the valve body 2.

[0034] Obviously, the design of the guide hole 23 and the guide rib 24 allows the valve flap assembly 3 to form a double guide structure, thereby ensuring the concentricity of the valve flap assembly 3 during lifting, opening and closing, and avoiding the stability of the opening and closing performance of the valve flap assembly 3 after accidental impact.

[0035] The valve flap rod 31 is provided with a set elastic element 34. For example, a cylindrical spring is selected in this embodiment. The two ends of the elastic element 34 are elastically pushed on the lower coupling 32 and the top surface of the middle partition 22 respectively. Therefore, the elastic element 34 can elastically push the lower coupling 32 upward under normal conditions, so that the valve flap assembly 3 is elastically pushed upward and the lower end of the connecting rod 63 contacts the top groove 321 of the lower coupling 32.

[0036] In this way, when the transmission rod 6 drives the transmission nut 61 to drive the connecting rod 63 to move upward, the valve flap assembly 3 will be elastically pushed upward and move upward synchronously, thereby driving the valve flap 33 to contact the valve seat 8 to close the water inlet hole 21, or when the transmission rod 6 drives the transmission nut 61 to drive the connecting rod 63 to move downward, the connecting rod will push the valve flap assembly 3 to move downward synchronously, thereby pushing the valve flap 33 to separate from the valve seat 8 to open the water inlet hole 21, and when the downward movement of the valve flap assembly 3 drives the lower coupling 32 to contact the middle partition plate 22, it will be blocked to form a downward stroke limit of the valve flap assembly 3.

[0037] Therefore, according to the above structural design, no matter whether the outdoor fire hydrant is in a closed state or an open state, once the part of the bolt body 4 exposed to the ground is damaged by an accidental impact, the lower end of the connecting rod 63 will be out of contact with the valve flap assembly 3, that is, the lower end of the connecting rod 63 can be more smoothly separated from the top groove 321 through the sliding arc 322. At this time, the valve flap assembly 3 will be elastically pushed upward to move upward, thereby driving the valve flap 33 to quickly contact the valve seat 8 and automatically close the water inlet hole 21, that is, a self-sealing function is formed, thereby effectively ensuring that the fire water can be automatically shut off at any time, avoiding a large amount of waste of water resources and reducing accident losses.

[0038] A residual water discharge device 9 is provided on one side of the valve body 2. The residual water discharge device is adjacent to the water inlet hole 21 and is higher than the water inlet hole. Its structure includes a main body 91 installed on one side of the valve body 2. A drainage hole 92 is provided in the main body and axially penetrates into the valve body 2. A sealing inner shoulder 95 and a closing ball 93 are provided in the middle of the drainage hole. The closing ball is made of a precision glass ball, which will not rust and has good sealing performance. In normal conditions, the closing ball 93 is also elastically pushed by an internal spring 94 to fit the sealing inner shoulder 95 to close the drainage hole 92.

[0039] When the residual water discharge device 9 is in normal use on the outdoor fire hydrant, no leakage will occur; when the outdoor fire hydrant is not in use, the valve flap assembly 3 is closed so that the valve flap 33 is filled with residual water. At this time, since the water pressure of the incoming water is cut off by the valve flap 33, the water pressure is reduced, that is, usually lower than 0.1Mpa, it will overcome the elastic force of the internal spring 94 to push the closing ball 93 out of the sealing inner shoulder 95 to open the drainage hole 92, that is, the residual water discharge device 9 is opened, so the residual water in the valve body 2 and the bolt body 4 can be drained, thereby preventing the valve body 2 from being corroded by long-term water accumulation on the upper part of the outdoor fire hydrant, and even freezing caused by water accumulation in winter, thereby avoiding affecting the service life of the outdoor fire hydrant, especially the residual water will freeze in winter and no water will be discharged if it is not drained.

[0040] In addition, when the remaining water is drained, the sealing ball 93 can again fit the sealing inner shoulder 95 under the elastic push of the internal spring 94 to close the drainage hole 92, thereby preventing dirt, dust, mosquitoes, etc. from entering the inside of the plug body 4.

[0041] The threaded connection part of the driving nut 61 and the connection part of the valve seat 8 are both made of brass Hpb59-1 material to prevent the connection parts from rusting and getting stuck due to long-term non-use.

[0042] The utility model is easy to install and maintain, can be opened and closed flexibly without obstruction, has stable performance and long service life, and can therefore be widely used in outdoor fire-fighting water supply systems.

[0043] The above description is only a specific embodiment of the present invention. Those skilled in the art should understand that any structural design equivalent to this embodiment should be included in the protection scope of the present invention.

Claims

1. A double-guided self-sealing anti-collision outdoor fire hydrant, comprising a valve body (2), a water inlet elbow (1) at the bottom of the valve body, a plug body (4) at the top of the valve body, and a plug cover (5) at the top of the plug body; the valve body (2) is provided with a water inlet hole (21) and a valve flap assembly (3); the top side of the plug body (4) is provided with a plurality of water outlet interfaces (41); the plug cover (5) is provided with a transmission rod (6), the lower end of the transmission rod extends into the plug body (4) and is connected to a transmission nut (61) through a thread, and the transmission nut is driven by the transmission rod (6) to form a lifting movement, characterized in that A connecting rod (63) is mounted on the driving nut (61), and the valve flap assembly (3) is elastically pushed upward to contact the lower end of the connecting rod (63); the driving rod (6) drives the driving nut (61) to drive the connecting rod (63) to move upward, and the valve flap assembly (3) is elastically pushed upward to move upward synchronously to close the water inlet hole (21); or the driving rod (6) drives the driving nut (61) to drive the connecting rod (63) to move downward, and the connecting rod pushes the valve flap assembly (3) to move downward synchronously to open the water inlet hole (21).

2. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 1, characterized in that The lower end of the connecting rod (63) is separated from the valve flap assembly (3), and the valve flap assembly is elastically pushed upward to move upward and automatically close the water inlet hole (21).

3. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 1, characterized in that The valve flap assembly (3) comprises a valve flap rod (31), a lower coupling (32) mounted on the upper end of the valve flap rod, and a valve flap (33) mounted on the lower end of the valve flap rod and located below the water inlet hole (21). The valve flap rod (31) is provided with a sleeved elastic element (34) which elastically pushes the lower coupling (32) upward, thereby driving the valve flap (33) to automatically rise and move to close the water inlet hole (21).

4. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 3, characterized in that The top of the lower coupling (32) is provided with a top groove (321), and the groove wall of the top groove is provided with a slip arc (322) inclined outward. The elastic element (34) elastically pushes the lower coupling (32) upward and makes the lower end of the connecting rod (63) contact the top groove (321) of the lower coupling (32).

5. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 3, characterized in that The valve body (2) is provided with a guide valve flap rod (31) in the middle to form a guide hole (23) for axial lifting and lowering movement, and the inner wall of the valve body (2) is provided with a plurality of guide valve flaps (33) to form guide ribs (24) for axial lifting and lowering movement.

6. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 5, characterized in that A middle partition plate (22) is provided in the valve body (2), and the guide hole (23) is provided in the middle of the middle partition plate (22). The valve flap assembly (3) moves downward and drives the lower coupling (32) to contact the middle partition plate (22) to form a downward stroke limit.

7. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 1, characterized in that A surplus water discharge device (9) is provided on one side of the valve body (2), and the surplus water discharge device is adjacent to the water inlet hole (21) and is higher than the water inlet hole.

8. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 7, characterized in that The residual water discharge device (9) comprises a main body (91) mounted on one side of the valve body (2), the main body being provided with a drainage hole (92) axially penetrating into the valve body (2), and a sealing inner shoulder (95) and a closing ball (93) being provided in the middle of the drainage hole, the closing ball being elastically pushed to fit the sealing inner shoulder (95) to close the drainage hole (92).

9. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 3, characterized in that A locked and fixed valve seat (8) is provided in the water inlet hole (21), and the valve flap (33) moves axially up and down and contacts the valve seat (8) to close the water inlet hole (21) or leaves the valve seat (8) to open the water inlet hole (21).

10. A double-guide self-sealing anti-collision outdoor fire hydrant according to claim 1, characterized in that A plurality of breakable bolts (7) are provided between the valve body (2) and the bolt body (4) for fastening and connecting.

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