A fire hydrant

Abstract

This application relates to a fire hydrant, which includes a main body. The main body is provided with a water outlet channel, and the main body is provided with a control valve. The control valve includes a valve body installed in the water outlet channel and a drive shaft for controlling the movement of the valve body. The drive shaft penetrates vertically and is rotatably connected to the main body. The drive shaft is provided with a control handle. The drive shaft is provided with an installation cavity that has an upper opening and extends vertically. The control handle is vertically accommodated in the installation cavity. A connection head is penetrated and slidably connected in the installation cavity. The lower end of the control handle is hinged to the connection head. A limiting block is fixedly connected to the side wall of the connection head. A limiting groove that is engaged with the limiting block is opened on the side wall of the installation cavity, and the limiting groove extends vertically. This application has the effect of improving the convenience of accessing fire-fighting water.

Description

Technical Field

[0001] The present application relates to the field of fire-fighting equipment, and particularly to a fire hydrant. Background Art

[0002] A fire hydrant, also called a fire hose connection, is divided into an indoor fire hydrant and an outdoor fire hydrant. For an indoor fire hydrant, it is usually installed in the form of a fire hydrant box set on a wall. For an outdoor fire hydrant, it usually presents in the form of a ground fire hydrant, which includes a main body fixed to the ground and connected to a fire pipeline. An outlet channel is provided inside the main body, and the outlet channel is open towards the outside of the main body. And, a control valve is further provided on the main body. The control valve includes a valve body and a drive shaft. The drive shaft penetrates vertically and is rotatably connected to the main body. And when in use, rotating the drive shaft can control the valve body to open or close the outlet channel.

[0003] Generally, the top of the drive shaft is provided with a prismatic connecting portion, and the fire hydrant further includes a control handle for clamping with the connecting portion. The control handle is placed on the side of the main body. When in use, pick up the control handle, and then clamp the control handle on the connecting portion on the drive shaft, and the rotation of the drive shaft can be controlled through the control handle, making it more labor-saving and convenient to control the rotation of the drive shaft, so as to open the outlet channel to draw fire water.

[0004] However, in actual use, the control handle placed on the side of the main body is likely to be lost; or it is corroded by the environment, thereby reducing the self-strength of the control handle and weakening the use effect of the control handle; at the same time, in an emergency, when the control handle is sleeved on the connecting portion, the control handle is likely to fall off, making it relatively inconvenient to draw fire water when needed. Summary of the Invention

[0005] In order to improve the convenience of drawing fire water, the present application provides a fire hydrant.

[0006] The fire hydrant provided by the present application adopts the following technical solutions:

[0007] A fire hydrant includes a main body. The main body is provided with an outlet channel. The main body is provided with a control valve. The control valve includes a valve body installed in the outlet channel and a drive shaft for controlling the movement of the valve body. The drive shaft penetrates vertically and is rotatably connected to the main body. The drive shaft is provided with a control handle. The drive shaft is provided with an installation cavity that opens upward and extends vertically. The control handle is vertically received in the installation cavity. A connecting head is penetrated and slidably connected in the installation cavity. The lower end of the control handle is hinged to the connecting head. A limiting block is fixedly connected to the side wall of the connecting head. A limiting groove that is engaged with the limiting block is opened on the side wall of the installation cavity. The limiting groove extends vertically.

[0008] By adopting the above technical solution, during use, only the control handle needs to be pulled out from the installation cavity. When the upper limit block on the connector slides to the top of the limit groove, the control handle is rotated horizontally, so as to facilitate the rotation of the drive shaft, making it relatively convenient to draw fire-fighting water; and when not in use, the control handle is located in the installation cavity, thereby reducing the possibility of the control handle being affected by the environment and the control handle is not easily lost; the provided limit block can limit the sliding distance of the connector and the control handle, so that the control handle is not easily detached from the drive shaft when drawing fire-fighting water.

[0009] Optionally, a cover plate is provided at one end of the control handle away from the connector, and the cover plate is used to cover the upper opening of the installation cavity.

[0010] By adopting the above technical solution, when the control handle is accommodated in the installation cavity, the provided cover plate can protect the upper opening of the installation cavity, reducing the possibility of external sundries or moisture entering the installation cavity and interfering with the control handle.

[0011] Optionally, a cushion layer made of an elastic material is fixedly connected to the end face of the cover plate facing the drive shaft side. The cushion layer is used to abut against the edge of the opening of the installation cavity. When the control handle is accommodated in the installation cavity, a gap is provided between the connector and the bottom wall of the installation cavity.

[0012] By adopting the above technical solution, after the control handle and the connector fall in the installation cavity and the cover plate collides with the edge of the opening of the installation cavity, the provided cushion layer has a damping effect, reducing the impact force received by the control handle and the connector and increasing the service life.

[0013] Optionally, a reinforcing groove is provided on the side wall at the opening of the installation cavity. The reinforcing groove is provided with an upper opening and is used to be clamped with the horizontally placed control handle.

[0014] By adopting the above technical solution, when the control handle needs to be slid out of the installation cavity to draw fire-fighting water, the control handle is rotated horizontally and the control handle is clamped in the reinforcing groove. Thus, when controlling the rotation of the drive shaft, the side wall of the reinforcing groove can also support the control handle, further increasing the load-bearing capacity of the connection part between the control handle and the drive shaft and improving the stability of the control handle when controlling the rotation of the drive shaft.

[0015] Optionally, a limiting member is provided on the side wall of the reinforcing groove. The limiting member includes a locking pin and a pushing spring. The locking pin is inserted through and slidably connected to the side wall of the reinforcing groove. The two ends of the pushing spring are respectively connected to the locking pin and the side wall of the reinforcing groove. The control handle is provided with a positioning hole for cooperating with the locking pin. The upper end face of the locking pin is set as a first arc-shaped surface for facilitating the sliding of itself, and the control handle is provided with a control member for controlling the sliding of the locking pin away from the positioning hole.

[0016] By adopting the above technical solution, during the process of rotating the control handle to the horizontal position, the control handle will abut against the first arc-shaped curved surface portion of the locking pin, and then push the locking pin to slide away from the control handle. Subsequently, when the positioning hole corresponds to the locking pin, the locking pin is acted on by the pushing spring and automatically fits into the positioning hole, thereby locking the control handle in the reinforcement groove. Thus, when controlling the rotation of the drive shaft through the control handle, the control handle is not prone to jitter in the reinforcement groove, increasing the stability of the control handle during use. When it is necessary to place the control handle in the installation cavity again, the locking pin can be pushed out of the positioning hole through the control member, thereby releasing the restriction on the control handle and enabling the control handle to move normally into the installation cavity.

[0017] Optionally, the control member includes a control shaft and a push block. The control shaft is rotatably connected to the control handle, the push block is fixedly connected to the control shaft, the push block is used to abut against the locking pin to push the locking pin out of the positioning hole, and the locking pin is formed with a second arc-shaped curved surface for abutting against the push block.

[0018] By adopting the above technical solution, when it is necessary to release the restriction of the locking pin on the control handle, rotate the control shaft, thereby driving the push block to rotate towards the locking pin and abut against the second arc-shaped curved surface on the locking pin, and then push the locking pin to slide away from the positioning hole to release the restriction of the locking pin on the control handle.

[0019] Optionally, a return torsion spring is sleeved on the control shaft, and both ends of the return torsion spring are fixedly connected to the control shaft and the control handle respectively.

[0020] By adopting the above technical solution, during use, after the control handle is released from the restriction of the locking pin, the return torsion spring can drive the control shaft and the push block to reset. Thus, when the locking pin is fitted into the positioning hole again later, the push block is not prone to blocking the locking pin, increasing the use effect.

[0021] Optionally, the cover plate is rotatably connected to the control handle, and the control shaft is fixedly connected to the cover plate coaxially.

[0022] By adopting the above technical solution, rotating the cover plate can control the rotation of the control shaft, so that while the cover plate protects the opening of the installation cavity, it is also convenient to control the rotation of the control shaft.

[0023] Optionally, the reinforcement groove is covered with a protection plate. The protection plate is located outside the drive shaft and is hinged to the lower edge of the reinforcement groove. A drive torsion spring for driving the protection plate to cover the reinforcement groove is provided at the rotation axis of the protection plate.

[0024] By adopting the above technical solution, when the control handle detaches from the reinforcement groove and enters the installation cavity, the driving torsion spring can drive the protective plate to rotate upward and cover the reinforcement groove, thereby closing the opening at the reinforcement groove. Finally, when the cover plate covers the opening of the installation cavity, the sealing effect of the installation cavity can be ensured; and, in the process of taking fire-fighting water and pulling the control handle out of the installation cavity and clamping it in the reinforcement groove, the control handle can automatically push the protective plate to rotate, so that the protective plate is not easy to hinder the use of the control handle.

[0025] Optionally, a guide protrusion is fixedly connected to the outer wall of the control handle facing away from the reinforcement groove, and a vertically extending guide groove is provided on the inner wall of the installation cavity opposite to the reinforcement groove. The guide protrusion is slidably connected in the guide groove, and a guide portion is formed at the upper end of the guide groove.

[0026] By adopting the above technical solution, when in use, when the control handle is sliding out of the installation cavity, the guide protrusion will slide along the guide groove. When the guide protrusion slides to the top of the guide groove and is guided by the guide slide part, the guide protrusion will make the control handle have a tendency to rotate toward one side of the reinforcement groove, thereby guiding the folding direction of the control handle, increasing the efficiency of the control handle when folding, and thus improving the efficiency of taking fire water.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The control handle is located in the installation cavity, thereby reducing the possibility of the control handle being affected by the environment. The control handle is not easy to lose. When using it, just pull the control handle out of the installation cavity. When the upper limit block of the connector slides to the top of the limit groove, turn the control handle to the horizontal direction, so as to facilitate the control of the rotation of the drive shaft, making it relatively convenient to take fire water;

[0029] 2. During use, when the control handle is sliding out of the installation cavity, the guide protrusion will slide along the guide groove. When the guide protrusion slides to the top of the guide groove and is guided by the guide slide part, the guide protrusion will make the control handle have a tendency to rotate toward one side of the reinforcement groove, thereby guiding the folding direction of the control handle, increasing the efficiency of the control handle when folding, and thus improving the efficiency of taking fire water. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0031] Figure 2 This is a partial cross-sectional view of the drive shaft of the embodiment of the present application. Figure 1 ;

[0032] Figure 3 is a partial cross-sectional structural schematic diagram of a control handle according to an embodiment of the present application;

[0033] Figure 4 is Figure 3 The enlarged structural schematic diagram of part A in

[0034] Figure 5 The structural schematic diagram of the locking pin in the embodiment of the present application;

[0035] Figure 6 The partial sectional structural schematic of the drive shaft in the embodiment of the present application Figure 2 .

[0036] Explanation of reference numerals: 1, main body; 2, drive shaft; 21, installation cavity; 211, reinforcement groove; 3, control handle; 31, guiding convex block; 311, guiding sliding groove; 312, guiding sliding part; 4, connecting head; 41, limiting block; 42, limiting groove; 5, limiting part; 51, locking pin; 511, first arc-shaped surface; 512, second arc-shaped surface; 52, pushing spring; 6, control part; 61, control shaft; 611, reset torsion spring; 62, pushing block; 7, cover plate; 71, cushion layer; 8, protection plate. Specific implementation mode

[0037] The following will be further described in detail with reference to the attached Figures 1-6 to the present application.

[0038] The embodiment of the present application discloses a fire hydrant. Refer to Figure 1 , a fire hydrant includes a main body 1, and a water outlet channel is arranged inside the main body 1. The main body 1 is provided with a control valve, the control valve includes a valve body and a drive shaft 2, the valve body is installed in the water outlet channel, the drive shaft 2 penetrates vertically and is rotatably connected to the main body 1, and rotating the drive shaft 2 can control the valve body to open or close the water outlet channel.

[0039] Refer to Figure 1 and Figure 2 , the drive shaft 2 is provided with a control handle 3. At this time, a vertically extending installation cavity 21 is opened inside the drive shaft 2, and the installation cavity 21 is provided with an upper opening, and the control handle 3 is accommodated in the installation cavity 21. When the control handle 3 is inside the installation cavity 21, it is arranged vertically. A connecting head 4 is penetrated and slidably connected in the installation cavity 21, the connecting head 4 is located at the lower end of the control handle 3 and the two are hinged. A limiting block 41 is fixedly connected to the side wall of the connecting head 4, a limiting groove 42 is opened on the side wall of the installation cavity 21, the limiting groove 42 extends vertically, and the limiting block 41 is clamped and slidably connected in the limiting groove 42.

[0040] During use, the control handle 3 is located within the installation cavity 21, thereby reducing the likelihood of the control handle 3 being affected by the environment, and when not in use, the control handle 3 is not easily lost. When it is necessary to draw fire-fighting water, simply pull out the control handle 3 from the installation cavity 21. When the limit block 41 on the connector 4 slides to the top of the limit groove 42, rotate the control handle 3 horizontally to facilitate controlling the rotation of the drive shaft 2.

[0041] Meanwhile, the provided limit block 41 can limit the sliding distance of the connector 4 and the control handle 3, so that the control handle 3 is not easily detached from the drive shaft 2 when drawing fire-fighting water, making it relatively convenient to draw fire-fighting water.

[0042] Refer to Figure 2 , a cover plate 7 is provided at one end of the control handle 3 away from the connector 4, such that when the control handle 3 is received in the installation cavity 21, the cover plate 7 can abut against the opening edge of the installation cavity 21. And at this time, there is a clearance between the connector 4 and the bottom wall of the installation cavity 21. A cushion layer 71 is fixedly connected to the end face of the cover plate 7 facing the drive shaft 2, and the cushion layer 71 is made of an elastic material, such as rubber or silica gel.

[0043] When the control handle 3 is received in the installation cavity 21, the provided cover plate 7 can protect the upper opening of the installation cavity 21, reducing the possibility of external debris or moisture entering the installation cavity 21 and interfering with the control handle 3. Moreover, when the control handle 3 and the connector 4 fall in the installation cavity 21 and the cover plate 7 collides with the opening edge of the installation cavity 21, the provided cushion layer 71 has a vibration damping effect; and when the cushion layer 71 is clamped between the cover plate 7 and the opening edge of the installation cavity 21, it also has the effect of sealing the gap between the cover plate 7 and the opening edge of the installation cavity 21, further reducing the possibility of external moisture entering the installation cavity 21.

[0044] Refer to Figure 3 , in order to improve the stability of the control handle 3 when controlling the rotation of the drive shaft 2, a reinforcement groove 211 is provided on the side wall at the opening of the installation cavity 21, and the reinforcement groove 211 has an upper opening.

[0045] When it is necessary to draw fire-fighting water and slide the control handle 3 out of the installation cavity 21, rotate the control handle 3 horizontally and engage the control handle 3 in the reinforcement groove 211. Thus, when controlling the rotation of the drive shaft 2, the side wall of the reinforcement groove 211 can also support the control handle 3, further increasing the load-bearing capacity of the connection part between the control handle 3 and the drive shaft 2 and improving the stability of the control handle 3 when controlling the rotation of the drive shaft 2.

[0046] Refer to Figure 3 and Figure 4, a limiting member 5 is provided on the side wall of the reinforcing groove 211. The limiting member 5 includes a locking pin 51 and a pushing spring 52. The locking pin 51 is inserted through and slidably connected to the side wall of the reinforcing groove 211. The two ends of the pushing spring 52 are respectively fixedly connected to the locking pin 51 and the side wall of the reinforcing groove 211. The control handle 3 is provided with a positioning hole, so that the locking pin 51 can cooperate with the positioning hole. At this time, the upper end surface of the locking pin 51 is set as a first arc-shaped surface 511, and the first arc-shaped surface 511 is located at one end of the locking pin 51 facing the positioning hole.

[0047] During the process of the control handle 3 rotating to the horizontal position, the control handle 3 will abut against a part of the first arc-shaped surface 511 of the locking pin 51, and then push the locking pin 51 to slide away from the control handle 3. Subsequently, when the positioning hole corresponds to the locking pin 51, the locking pin 51 is acted on by the pushing spring 52 and automatically fits into the positioning hole, thereby locking the control handle 3 in the reinforcing groove 211. Thus, when controlling the driving shaft 2 to rotate through the control handle 3, the control handle 3 is not easy to shake in the reinforcing groove 211, increasing the stability of the use of the control handle 3.

[0048] Refer to Figure 3 and Figure 4 , the control handle 3 is provided with a control member 6, so that when it is necessary to place the control handle 3 in the installation cavity 21 again, the locking pin 51 can be pushed out of the positioning hole through the control member 6, thereby releasing the restriction on the control handle 3, so that the control handle 3 can normally move into the installation cavity 21.

[0049] Refer to Figure 3 , Figure 4 and Figure 5 , the control member 6 includes a control shaft 61 and a push block 62. The control shaft 61 is inserted through and rotatably connected to the inside of the control handle 3, and the control shaft 61 extends along the length direction of the control handle 3. At this time, the cover plate 7 is rotatably connected to the control handle 3, and the control shaft 61 is fixedly connected to the cover plate 7 in a rotating manner. The push block 62 is fixedly connected to the control shaft 61, so that when the control shaft 61 is rotated, the push block 62 can abut against the locking pin 51. At this time, the locking pin 51 is provided with an embedding groove, and the bottom wall of the embedding groove is formed with a second arc-shaped surface 512 that abuts against the push block 62.

[0050] When it is necessary to release the restriction of the locking pin 51 on the control handle 3, hold the cover plate 7 and rotate the cover plate 7, thereby driving the control shaft 61 to rotate, so as to drive the push block 62 to rotate towards the locking pin 51 and abut against the second arc-shaped surface 512 on the locking pin 51, and then push the locking pin 51 to slide away from the positioning hole to release the restriction of the locking pin 51 on the control handle 3. Thus, while the cover plate 7 protects the opening of the installation cavity 21, it is also convenient to control the rotation of the control shaft 61.

[0051] Refer to Figure 3The control shaft 61 is sleeved with a return torsion spring 611, and the two ends of the return torsion spring 611 are respectively fixedly connected to the control shaft 61 and the control handle 3. When in use, after the control handle 3 is free from the restriction of the locking pin 51, the return torsion spring 611 can drive the control shaft 61 and the push block 62 to reset, and then when the locking pin 51 is subsequently matched with the positioning hole again, the push block 62 is not likely to block the locking pin 51, thereby increasing the use effect.

[0052] In other embodiments, the control member 6 may also be configured as a push rod, which is passed through and slidably connected to the control handle 3, so that the push rod can push the locking pin 51 to slide away from the positioning hole.

[0053] Reference Figure 6 After the cover plate 7 is closed, in order to further ensure the protection of the installation cavity 21, the possibility of external debris or moisture entering the installation cavity 21 from the reinforcement groove 211 is reduced. The reinforcement groove 211 is covered with a protective plate 8, which is located on the outside of the drive shaft 2, and the protective plate 8 is hinged to the lower edge of the reinforcement groove 211. A driving torsion spring is arranged at the rotating shaft of the protective plate 8, and the two ends of the driving torsion spring are respectively connected to the protective plate 8 and the edge of the reinforcement groove 211. When the control handle 3 is separated from the reinforcement groove 211 and enters the installation cavity 21, the driving torsion spring can drive the protective plate 8 to rotate upward and cover the reinforcement groove 211, thereby closing the opening at the reinforcement groove 211. Finally, when the cover plate 7 covers the opening of the installation cavity 21, the sealing effect of the installation cavity 21 can be ensured.

[0054] Furthermore, when the control handle 3 is pulled out of the installation cavity 21 and clamped in the reinforcement groove 211 to obtain fire-fighting water, the control handle 3 can automatically push the protective plate 8 to rotate, so that the protective plate 8 is not likely to hinder the use of the control handle 3.

[0055] Reference Figure 6 The outer wall of the control handle 3 away from the reinforcement groove 211 is fixedly connected with a guide protrusion 31, and the guide protrusion 31 is located at the end of the control handle 3 close to the connector 4. The inner wall of the installation cavity 21 opposite to the reinforcement groove 211 is provided with a vertically extending guide groove 311, and the guide protrusion 31 is clamped and slidably connected in the guide groove 311. The upper end of the guide groove 311 is formed with a guide slide portion 312 with a curved surface structure.

[0056] When in use, when the control handle 3 is sliding out of the installation cavity 21, the guide protrusion 31 will slide along the guide groove 311. When the guide protrusion 31 slides to the top of the guide groove 311 and is guided by the guide sliding portion 312, the guide protrusion 31 will make the control handle 3 have a tendency to rotate toward one side of the reinforcement groove 211, thereby guiding the folding direction of the control handle 3, increasing the efficiency of the control handle 3 when folding, and thus improving the efficiency of taking fire water.

[0057] The implementation principle of a fire hydrant in an embodiment of the present application is as follows: during use, simply pull out the control handle 3 from the installation cavity 21. When the limit block 41 on the connector 4 slides to the top of the limit groove 42, rotate the control handle 3 horizontally so that the control handle 3 snaps into the reinforcement groove 211, thereby facilitating the rotation of the drive shaft 2 and making it relatively convenient to draw fire-fighting water.

[0058] When not in use, the control handle 3 is located in the installation cavity 21, thereby reducing the possibility of the control handle 3 being affected by the environment and making it less likely to be lost.

[0059] The above are all preferred embodiments of the present application. Without restricting the protection scope of the present application accordingly, therefore: all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fire hydrant, comprising a main body (1), the main body (1) is provided with a water outlet channel, the main body (1) is provided with a control valve, the control valve includes a valve body installed in the water outlet channel and a drive shaft (2) for controlling the movement of the valve body, the drive shaft (2) vertically penetrates and is rotatably connected to the main body (1), and the drive shaft (2) is provided with a control handle (3). Characterized in that: The drive shaft (2) is provided with an installation cavity (21) with an upper opening and extending vertically, the control handle (3) is vertically accommodated in the installation cavity (21), a connecting head (4) is penetrated and slidably connected in the installation cavity (21), the lower end of the control handle (3) is hinged to the connecting head (4), a limiting block (41) is fixedly connected to the side wall of the connecting head (4), and a limiting groove (42) for engaging with the limiting block (41) is provided on the side wall of the installation cavity (21), and the limiting groove (42) extends vertically; A reinforcing groove (211) is provided on the side wall at the opening of the installation cavity (21), the reinforcing groove (211) has an upper opening, and the reinforcing groove (211) is used for engaging with the horizontally arranged control handle (3); A limiting member (5) is provided on the side wall of the reinforcing groove (211), the limiting member (5) includes a locking pin (51) and a pushing spring (52), the locking pin (51) is penetrated and slidably connected to the side wall of the reinforcing groove (211), the two ends of the pushing spring (52) are respectively connected to the locking pin (51) and the side wall of the reinforcing groove (211), the control handle (3) is provided with a positioning hole for cooperating with the locking pin (51), the upper end surface of the locking pin (51) is set as a first arc-shaped surface (511) for facilitating the pushing of its own sliding, and the control handle (3) is provided with a control member (6) for controlling the sliding of the locking pin (51) away from the positioning hole.

2. A fire hydrant according to claim 1, Characterized in that: One end of the control handle (3) away from the connecting head (4) is provided with a cover plate (7), and the cover plate (7) is used for covering the upper opening of the installation cavity (21).

3. A fire hydrant according to claim 2, Characterized in that: A cushion layer (71) made of an elastic material is fixedly connected to the end surface of the cover plate (7) facing the drive shaft (2), the cushion layer (71) is used for abutting against the opening edge of the installation cavity (21), and when the control handle (3) is accommodated in the installation cavity (21), a gap is provided between the connecting head (4) and the bottom wall of the installation cavity (21).

4. A fire hydrant according to claim 2, Characterized in that: The control member (6) includes a control shaft (61) and a push block (62), the control shaft (61) is rotatably connected to the control handle (3), the push block (62) is fixedly connected to the control shaft (61), the push block (62) is used for abutting against the locking pin (51) to push the locking pin (51) out of the positioning hole, and the locking pin (51) is formed with a second arc-shaped surface (512) for abutting against the push block (62).

5. A fire hydrant according to claim 4, Characterized in that: The control shaft (61) is sleeved with a reset torsion spring (611), and two ends of the reset torsion spring (611) are fixedly connected to the control shaft (61) and the control handle (3) respectively.

6. A fire hydrant according to claim 5, characterized in that: The cover plate (7) is rotatably connected to the control handle (3), and the control shaft (61) is fixedly connected to the cover plate (7) by the same rotating shaft.

7. A fire hydrant according to claim 1, characterized in that: The reinforcing groove (211) is covered with a protective plate (8), the protective plate (8) is located outside the drive shaft (2) and is hinged to the lower edge of the reinforcing groove (211), and a drive torsion spring for driving the protective plate (8) to cover the reinforcing groove (211) is arranged at the rotating shaft of the protective plate (8).

8. A fire hydrant according to claim 7, characterized in that: A guiding convex block (31) is fixedly connected to the outer wall of the control handle (3) on the side away from the reinforcing groove (211), a vertically extending guiding chute (311) is formed in the inner wall of the installation cavity (21) opposite to the reinforcing groove (211), the guiding convex block (31) is slidably connected in the guiding chute (311), and a guiding part (312) is formed at the upper end of the guiding chute (311).

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