Municipal anti-collision fire hydrant

Abstract

The invention belongs to the technical field of fire hydrants, and particularly relates to a municipal anti-collision fire hydrant which comprises a hydrant body, a connecting part, an embedded part, a control mechanism and a drainage mechanism. The hydrant body comprises a connecting base and a connecting column used for being connected with a fire hose. The connecting part comprises a connecting belt, a bearing seat and a connecting disc, the bearing seat is arranged on the upper end face of the connecting belt and used for being connected with the connecting seat, and the connecting disc is fixedly installed at the bottom of the connecting belt and used for being connected with a city fire fighting water supply pipeline; the pre-embedded part comprises a containing cylinder and a sealing cover plate, the upper end face of the containing cylinder is provided with an extending hole for the connecting column to pass through, and the sealing cover plate is rotationally installed on the upper end face of the containing cylinder and used for sealing the extending hole; the control mechanism comprises a control motor and a control screw rod; through cooperation of the structure, mistaken touch of pedestrians is prevented, the use safety is improved, meanwhile, the connecting column contracted in the containing cylinder can avoid vehicle collision, personnel in a locomotive are protected, and meanwhile property loss is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of fire hydrants, in particular to a municipal anti-collision fire hydrant. Background Art

[0002] The main function of fire hydrants is to control combustibles, isolate combustion-supporting materials, and eliminate fire sources. They are divided into indoor fire hydrants and outdoor fire hydrants. With the laying of water pipes, the Fire Department of the Municipal Council installed fire hydrants on every street where the water pipes pass. The location of fire hydrants must comply with the building fire protection design specifications. According to the "Code for Fire Protection Design of Buildings" (GB50016) and other relevant laws and regulations, the setting of fire hydrants must take into account the nature, area, number of floors and functional areas of the building. As a result, the location of the fire hydrants will overlap with the sidewalk, and fire hydrants set on the roadside are prone to collision accidents.

[0003] A Chinese patent application CN108797709B discloses a municipal anti-collision fire hydrant, which is mainly composed of an inlet pipe and an outlet pipe, wherein the lower end of the inlet pipe is buried underground, and only the upper end of the inlet pipe protrudes from the ground to connect to the outlet pipe, and the outlet pipe is vertically arranged on the ground. According to the above technical solution, the outlet pipe vertically arranged on the ground can bend and deform when impacted or squeezed to avoid being damaged, so that the entire fire hydrant has good anti-collision ability.

[0004] Although the above technology can bend and deform when hit or squeezed to avoid being damaged, the fire hydrants are exposed above the ground and there is still obstruction and damage when a collision occurs. In particular, fire hydrants installed on the sidewalk are extremely unfriendly to blind friends and pedestrians.

[0005] To this end, the present invention provides a municipal anti-collision fire hydrant. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a municipal anti-collision fire hydrant described in the present invention includes a hydrant body, a connecting part, a pre-embedded part, a control mechanism and a drainage mechanism;

[0008] The bolt body includes a connecting seat and a connecting column for connecting with a fire hose;

[0009] The connection part includes a connection belt, a bearing seat and a connection plate. The bearing seat is arranged on the upper end surface of the connection belt and is used to connect with the connection seat. The connection plate is fixedly installed at the bottom of the connection belt and is used to connect with the municipal fire water supply pipeline.

[0010] The embedded part includes a receiving tube and a closing cover plate. The upper end surface of the receiving tube is provided with a protruding hole for the connecting column to pass through. The closing cover plate is rotatably mounted on the upper end surface of the receiving tube and is used to close the protruding hole.

[0011] The control mechanism includes a control motor and a control screw, the control screw is rotatably installed inside the accommodating cylinder, and the control screw passes through the bearing seat, and the inner wall of the bearing seat is connected to the control screw through internal and external threads;

[0012] The control motor is fixedly mounted on the inner wall of the accommodating cylinder, and the output shaft of the control motor is fixedly connected to the axial end of the control screw;

[0013] The drainage mechanism comprises a control pump and a suction pipe. The control pump is arranged in the accommodating cylinder and absorbs the liquid at the bottom of the accommodating cylinder through the suction pipe.

[0014] Preferably, a plurality of control screws are provided, the plurality of control screws are parallel to each other, and two adjacent control screws are connected by a transmission member;

[0015] The bottom of the closed cover plate is provided with an elastic sealing member for sealing;

[0016] The middle part of the suction pipe is connected to the input end of the control pump, and the two open ends of the suction pipe are arranged obliquely along the bottom of the accommodating cylinder;

[0017] A sewage discharge pipe is embedded in the upper end of the accommodating cylinder, and the bottom of the sewage discharge pipe is connected to the output end of the control pump.

[0018] Preferably, a control ball valve for controlling water flow is provided inside the connection plate, and the rotation of the valve stem of the control ball valve is controlled by the lifting and lowering of the bearing seat;

[0019] A drainage head is fixedly mounted on the upper end surface of the accommodating cylinder, a drainage pipe is arranged at the input end of the drainage head, the other end of the drainage pipe is connected to the inner cavity of the connecting plate, and the drainage pipe is located on the upper side of the control ball valve.

[0020] Preferably, a control frame is fixedly installed at the bottom of the accommodating cylinder, a connecting arm is rotatably installed on the side wall of the control frame through a torsion spring, a top pressure roller is rotatably installed on one end of the connecting arm away from the control frame, and the outer wall of the top pressure roller rolls and fits with the outer wall of the connecting belt.

[0021] Preferably, a mounting cylinder is fixedly mounted on the outer wall of the connecting disk, a transmission shaft is rotatably mounted on the inner wall of the mounting cylinder, and an axial end of the transmission shaft is fixedly connected to the valve stem of the control ball valve;

[0022] A control plug is elastically installed in the inner cavity of the installation cylinder, and the radial outer wall of the control plug is sealed and fitted with the inner wall of the installation cylinder, and the rotation of the transmission shaft is controlled by sliding of the control plug.

[0023] Preferably, a transmission sleeve is fixedly installed on the outer wall of the control plug, a transmission hemisphere is fixedly installed on the inner wall of the transmission sleeve, a spiral groove is opened on the radial outer wall of the transmission shaft, the outer wall of the transmission hemisphere is slidingly fitted with the inner wall of the spiral groove, and the axis of the transmission shaft coincides with the axis of the transmission sleeve.

[0024] Preferably, a guide cylinder is fixedly mounted on the outer wall of the connecting disk, a guide rod is slidably mounted on the inner wall of the guide cylinder, one end of the guide rod extends to the outer wall of the guide cylinder and is fixedly connected to the outer wall of the control plug.

[0025] Preferably, a mounting frame is fixedly mounted on the inner wall of the accommodating cylinder, a storage cylinder is fixedly mounted on the inner wall of the mounting frame, a sealing ring is elastically mounted on the inner cavity of the storage cylinder, a control tube is fixedly mounted on the bottom of the sealing ring, and the inner cavity of the control tube is connected to the inner cavity of the mounting cylinder.

[0026] Preferably, a control fork for pressing the control tube is fixedly mounted on the outer wall of the bearing seat;

[0027] A transfer tube is fixedly mounted on the bottom of the accommodating tube, and the bottom of the transfer tube is connected to the inner cavity of the mounting tube through a conduit;

[0028] A hard pipe is slidably mounted on the inner wall of the adapter tube, and the upper end surface of the hard pipe is fixedly connected to the inner wall of the control tube.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. The bearing seat of the present invention has an upper end connected to the bottom of the connecting seat through a flange, and a closing cover is rotatably mounted on the upper end surface of the accommodating cylinder and used to close the extension hole. When the fire hydrant needs to be used, the bearing seat is controlled to rise and the connecting column is raised until the connecting column is exposed to the ground, so that firefighters can take water. After the fire hydrant is used, the bearing seat is controlled to descend until the connecting column is retracted into the inside of the accommodating cylinder, and then the closing cover is rotated to close the upper end opening of the accommodating cylinder to keep the upper end of the accommodating cylinder flat. After being put into use, even if the design requirements of the fire hydrant require it to be located on the sidewalk, the sidewalk can be kept unobstructed to prevent pedestrians from accidentally touching it, thereby improving the safety of use. At the same time, the connecting column retracted inside the accommodating cylinder can avoid vehicle collision, which not only protects the personnel in the locomotive, but also reduces property losses.

[0031] 2. The present invention provides a storage cylinder, the interior of the storage cylinder is used to store hydraulic oil, and a control fork is provided on the outer wall of the bearing seat. As the bearing seat rises, the control fork presses the control tube, thereby compressing the space inside the storage cylinder, and then the hydraulic oil drives the control plug to slide, so as to realize the control of the control ball valve. During the descending process of the bearing seat, the control fork and the control tube are separated, and the sealing ring is pushed to reset by the elastic force of the spring, and the hydraulic oil is sucked into the inner cavity of the storage cylinder again, which is used to drive the control plug to slide in the opposite direction, drive the control ball valve to close, and realize the conduction and disconnection of the inner cavity of the control connecting disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the internal structure of the accommodating cylinder of the present invention;

[0035] Figure 3 It is a schematic diagram of the installation of the installation cylinder in the present invention;

[0036] Figure 4 It is a structural schematic diagram of the bearing seat in the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the connecting belt in the present invention;

[0038] Figure 6 is a cross-sectional view of the storage tube in the present invention;

[0039] Figure 7 It is a schematic diagram of the installation of the control plug in the present invention;

[0040] Figure 8 It is a schematic diagram of the installation of the transmission hemisphere in the present invention.

[0041] In the figure: 1. accommodating cylinder; 2. closing cover plate; 3. connecting column; 4. drainage head; 5. drainage pipe; 6. connecting plate; 7. control frame; 8. connecting arm; 9. control screw; 10. bearing seat; 11. connecting seat; 12. connecting belt; 13. top pressure roller; 14. control fork; 15. mounting cylinder; 16. control motor; 17. mounting frame; 18. storage cylinder; 19. control tube; 20. hard tube; 21. adapter cylinder; 22. control plug; 23. transmission sleeve; 24. transmission shaft; 25. guide rod; 26. guide cylinder; 27. transmission hemisphere; 28. suction pipe; 29. ​​control pump; 30. sealing ring; 31. drainage pipe. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0043] like Figures 1 to 8 As shown, a municipal anti-collision fire hydrant described in the present invention includes a hydrant body, a connecting part, a pre-embedded part, a control mechanism and a drainage mechanism.

[0044] The bolt body includes a connecting seat 11 and a connecting column 3 for connecting to a fire water pipe, wherein a water inlet is arranged outside the connecting column 3 for connecting to the fire water pipe, and a flange is arranged at the bottom of the connecting seat 11 .

[0045] The connecting part includes a connecting belt 12, a bearing seat 10 and a connecting plate 6. The bearing seat 10 is arranged on the upper end surface of the connecting belt 12 and is used to connect with the connecting seat 11. The upper end of the bearing seat 10 is connected to the bottom of the connecting seat 11 through a flange. By controlling the lifting and lowering of the bearing seat 10, the lifting and lowering of the connecting seat 11 and the connecting column 3 are controlled.

[0046] The connecting plate 6 is fixedly mounted on the bottom of the connecting belt 12 and is used to connect to the municipal fire water supply pipeline, thereby connecting the connecting column 3 to the municipal fire water supply pipeline pre-buried underground to provide water source when extinguishing a fire.

[0047] In this embodiment, the connecting belt 12 is made of the same material as the fire hose, with an outer wall made of polyurethane material and an inner lining made of rubber material. The connecting belt 12 bends when the supporting base 10 is raised or lowered.

[0048] The embedded part includes a containing tube 1 and a closed cover plate 2. The upper end surface of the containing tube 1 is provided with an extension hole for the connecting column 3 to pass through. During construction, the containing tube 1 needs to be embedded in the ground. In order to achieve waterproof and insect-proof effects, the containing tube 1 is made of PVC plastic material.

[0049] The closing cover plate 2 is rotatably mounted on the upper end surface of the accommodating tube 1 and is used to close the extension hole. When the fire hydrant needs to be used, the closing cover plate 2 is first rotated open, and then the supporting seat 10 is controlled to rise, and the connecting column 3 is raised until the connecting column 3 is exposed to the ground, so that firefighters can get water.

[0050] After the fire hydrant is used, the bearing seat 10 is controlled to descend until the connecting column 3 is retracted into the interior of the accommodating tube 1, and then the closing cover plate 2 is rotated to close the upper end opening of the accommodating tube 1 to keep the upper end of the accommodating tube 1 flat. After it is put into use, even if the fire hydrant is designed to be located on a sidewalk, the sidewalk can be kept unobstructed to prevent pedestrians from accidentally touching it, thereby improving safety in use. At the same time, the connecting column 3 retracted inside the accommodating tube 1 can avoid vehicle collision, which not only protects the people in the locomotive, but also reduces property losses.

[0051] The control mechanism includes a control motor 16 and a control screw 9. The control screw 9 is rotatably installed inside the accommodating tube 1, and the control screw 9 passes through the supporting seat 10. The inner wall of the supporting seat 10 is connected to the control screw 9 through internal and external threads. Rotating the control screw 9 drives the supporting seat 10 to rise and fall, thereby controlling the lifting and lowering of the supporting seat 10.

[0052] The control motor 16 is fixedly mounted on the inner wall of the accommodating tube 1, and the output shaft of the control motor 16 is fixedly connected to the axial end of the control screw 9. The control motor 16 uses a common waterproof motor. The control screw 9 is driven to rotate by the control motor 16 to provide power for the lifting and lowering of the supporting seat 10.

[0053] The drainage mechanism includes a control pump 29 and a suction pipe 28. The control pump 29 is arranged in the accommodating cylinder 1 and absorbs the liquid at the bottom of the accommodating cylinder 1 through the suction pipe 28. The control pump 29 is a common water pump. Since the upper end opening of the accommodating cylinder 1 is flush with the ground, rainwater can easily enter. By setting the control pump 29, the rainwater in the accommodating cylinder 1 is discharged, thereby preventing the rainwater from being stored in the inner cavity of the accommodating cylinder 1 for a long time.

[0054] As a preferred embodiment of the present invention, a plurality of control screws 9 are provided, and the plurality of control screws 9 are parallel to each other. By providing a plurality of control screws 9, a plurality of fulcrums are formed on the outer wall of the support seat 10, thereby improving the stability of the lifting and lowering of the support seat 10 when the control screws 9 are rotated.

[0055] Two adjacent control screws 9 are connected by a transmission member, and the connecting member uses a common belt and pulley transmission. It should be noted that in order to prevent interference in the rotation between multiple control screws 9, no transmission member is set between one group of adjacent control screws 9.

[0056] In order to reduce the infiltration of rainwater as much as possible, an elastic sealing member is provided at the bottom of the closing cover 2 for sealing. By providing the elastic sealing member, the sealing of the upper opening of the accommodating tube 1 can be maintained as much as possible when the closing cover 2 is closed, so as to reduce the infiltration of rainwater.

[0057] The middle portion of the suction pipe 28 is connected to the input end of the control pump 29 , and the two open ends of the suction pipe 28 are arranged obliquely along the bottom of the accommodating tube 1 , so as to facilitate the extraction of rainwater at the bottom of the accommodating tube 1 .

[0058] A sewage pipe 5 is embedded in the upper end of the accommodating cylinder 1, and the bottom of the sewage pipe 5 is connected to the output end of the control pump 29. The sewage pipe 5 is used to discharge rainwater stored inside the accommodating cylinder 1. The embedded design is to keep the top of the accommodating cylinder 1 as flat as possible, thereby reducing the impact on pedestrians.

[0059] A control ball valve for controlling water flow is arranged inside the connection plate 6. The rotation of the valve stem of the control ball valve is controlled by the lifting and lowering of the bearing seat 10. The connection and disconnection between the connection plate 6 and the municipal fire water pipe are controlled by the control ball valve. When the bearing seat 10 rises, the control ball valve is turned on, and when the bearing seat 10 falls, the control ball valve is closed.

[0060] A drainage head 4 is fixedly mounted on the upper end surface of the accommodating cylinder 1 , wherein a valve is provided on the outer wall of the drainage head 4 , and a control handle of the valve is located above the accommodating cylinder 1 to facilitate rotational control of the drainage head 4 .

[0061] A drain pipe 31 is provided at the input end of the drain head 4, the other end of the drain pipe 31 is connected to the inner cavity of the connecting plate 6, and the drain pipe 31 is located on the upper side of the control ball valve. When the connecting column 3 drains water, the drain head 4 is closed to prevent water leakage.

[0062] After the connection column 3 is used, water remains in the connection belt 12 . At this time, the drainage head 4 is controlled to be turned on. During the descent of the support seat 10 , the water remaining in the connection belt 12 is discharged to keep the support seat 10 descending smoothly.

[0063] A control frame 7 is fixedly mounted on the bottom of the accommodating tube 1 , and a connecting arm 8 is rotatably mounted on the side wall of the control frame 7 via a torsion spring. Two connecting arms 8 are provided, and the two connecting arms 8 are symmetrically arranged on both sides of the control frame 7 .

[0064] A pressure roller 13 is rotatably installed at one end of the connecting arm 8 away from the control frame 7. The outer wall of the pressure roller 13 rolls and fits with the outer wall of the connecting belt 12. The elastic force of the torsion spring controls the pressure roller 13 to have a tendency to fit with the outer wall of the connecting belt 12 in real time. During the descending process of the supporting seat 10, the connecting belt 12 bends. At this time, the pressure roller 13 presses the connecting belt 12 to reduce wrinkles on the connecting belt 12 after bending and increase the service life of the connecting belt 12.

[0065] As a preferred embodiment of the present invention, a mounting cylinder 15 is fixedly installed on the outer wall of the connecting disk 6, and a mounting and supporting position is provided for the mounting cylinder 15 through the connecting disk 6. A transmission shaft 24 is rotatably installed on the inner wall of the mounting cylinder 15, and the axial end of the transmission shaft 24 is fixedly connected to the valve stem of the control ball valve. Rotating the transmission shaft 24 drives the valve stem of the control ball valve to rotate, thereby controlling the conduction and disconnection of the inner cavity of the connecting disk 6.

[0066] A control plug 22 is elastically installed in the inner cavity of the mounting cylinder 15, and the radial outer wall of the control plug 22 is sealed with the inner wall of the mounting cylinder 15. The inner cavity of the mounting cylinder 15 is divided into two chambers by the control plug 22, one of which is filled with hydraulic oil. The control plug 22 is driven to slide by increasing the pressure in the chamber on the side filled with hydraulic oil, and the transmission shaft 24 is controlled to rotate by the sliding of the control plug 22.

[0067] A transmission sleeve 23 is fixedly installed on the outer wall of the control plug 22, and a transmission hemisphere 27 is fixedly installed on the inner wall of the transmission sleeve 23. A spiral groove is provided on the radial outer wall of the transmission shaft 24. The outer wall of the transmission hemisphere 27 slides and fits with the inner wall of the spiral groove. The sliding control plug 22 drives the transmission sleeve 23 to slide, and through the cooperation of the transmission hemisphere 27 and the spiral groove, the transmission shaft 24 is driven to rotate, thereby realizing the control of the control ball valve.

[0068] The axis of the transmission shaft 24 coincides with the axis of the transmission sleeve 23 , thereby effectively improving the transmission stability of the transmission sleeve 23 .

[0069] A guide cylinder 26 is fixedly installed on the outer wall of the connecting disk 6, and a guide rod 25 is slidably installed on the inner wall of the guide cylinder 26. One end of the guide rod 25 extends to the outer wall of the guide cylinder 26 and is fixedly connected to the outer wall of the control plug 22, wherein the guide rod 25 can slide along the inner wall of the guide cylinder 26. Through the cooperation of the guide rod 25 and the guide cylinder 26, the sliding trajectory of the control plug 22 is limited, thereby preventing the control plug 22 from deflecting during the sliding process, thereby maintaining the stability of the transmission of the transmission sleeve 23 and the transmission shaft 24.

[0070] A mounting frame 17 is fixedly mounted on the inner wall of the accommodating cylinder 1 , and a storage cylinder 18 is fixedly mounted on the inner wall of the mounting frame 17 . The storage cylinder 18 is used to store hydraulic oil.

[0071] A sealing ring 30 is elastically mounted in the inner cavity of the storage tube 18 , and the outer wall of the sealing ring 30 is sealingly fitted with the inner wall of the storage tube 18 . A spring is arranged on the upper end surface of the sealing ring 30 , and the other end of the spring is fixedly connected to the inner wall of the storage tube 18 .

[0072] A control tube 19 is fixedly installed at the bottom of the sealing ring 30. The inner cavity of the control tube 19 is connected to the inner cavity of the mounting tube 15. Pressing the control tube 19 drives the sealing ring 30 to slide, thereby compressing the space inside the storage tube 18 and discharging the hydraulic oil from the control tube 19 to the mounting tube 15, thereby driving the control plug 22 to slide.

[0073] A control fork 14 for pressing the control tube 19 is fixedly mounted on the outer wall of the support seat 10 . As the support seat 10 rises, the control fork 14 presses the control tube 19 , thereby compressing the space inside the storage tube 18 .

[0074] During the process of the support base 10 descending, the control fork 14 and the control tube 19 are separated, and the sealing ring 30 is pushed back to its original position by the elastic force of the spring, so that the hydraulic oil is sucked into the inner cavity of the storage cylinder 18 again.

[0075] A transfer cylinder 21 is fixedly mounted at the bottom of the accommodating cylinder 1. The bottom of the transfer cylinder 21 is connected to the inner cavity of the mounting cylinder 15 through a conduit. Hydraulic oil is injected into the transfer cylinder 21 and then introduced into the inner cavity of the mounting cylinder 15 to drive the control plug 22 to slide.

[0076] A hard tube 20 is slidably mounted on the inner wall of the adapter tube 21, and the upper end surface of the hard tube 20 is fixedly connected to the inner wall of the control tube 19. A floating sealing plug is provided at the contact position between the hard tube 20 and the adapter tube 21 to maintain the sealed connection between the adapter tube 21 and the hard tube 20.

[0077] By providing the adapter tube 21 and the hard tube 20 , the control tube 19 can be kept connected to the inner cavity of the installation tube 15 when the control tube 19 slides.

[0078] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0079] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0080] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A municipal anti-collision fire hydrant, characterized in that: It includes a bolt body, a connecting part, an embedded part, a control mechanism and a drainage mechanism; The bolt body comprises a connection seat (11) and a connection column (3) for connecting to a fire-fighting water pipe; The connecting portion comprises a connecting belt (12), a bearing seat (10) and a connecting plate (6); the bearing seat (10) is arranged on the upper end surface of the connecting belt (12) and is used to connect with the connecting seat (11); the connecting plate (6) is fixedly installed on the bottom of the connecting belt (12) and is used to connect with the municipal fire water supply pipeline; The embedded part comprises a containing tube (1) and a closing cover plate (2); the upper end surface of the containing tube (1) is provided with a protruding hole for the connecting column (3) to pass through; the closing cover plate (2) is rotatably mounted on the upper end surface of the containing tube (1) and is used to close the protruding hole; The control mechanism comprises a control motor (16) and a control screw (9), wherein the control screw (9) is rotatably mounted inside the accommodating cylinder (1), and the control screw (9) passes through a bearing seat (10), and the inner wall of the bearing seat (10) is connected to the control screw (9) through internal and external thread matching; The control motor (16) is fixedly mounted on the inner wall of the accommodating cylinder (1), and the output shaft of the control motor (16) is fixedly connected to the axial end of the control screw (9); The drainage mechanism comprises a control pump (29) and a suction pipe (28); the control pump (29) is arranged in the accommodating cylinder (1) and absorbs liquid at the bottom of the accommodating cylinder (1) through the suction pipe (28).

2. A municipal anti-collision fire hydrant according to claim 1, characterized in that: A plurality of control screws (9) are provided, the plurality of control screws (9) are parallel to each other, and two adjacent control screws (9) are connected via a transmission member; The bottom of the closing cover plate (2) is provided with an elastic sealing member for sealing; The middle part of the suction pipe (28) is connected to the input end of the control pump (29), and the two open ends of the suction pipe (28) are arranged obliquely along the bottom of the accommodating cylinder (1); A sewage discharge pipe (5) is embedded in the upper end of the accommodating cylinder (1), and the bottom of the sewage discharge pipe (5) is connected to the output end of the control pump (29).

3. A municipal anti-collision fire hydrant according to claim 2, characterized in that: A control ball valve for controlling water flow is arranged inside the connection plate (6), and the rotation of the valve stem of the control ball valve is controlled by the lifting and lowering of the bearing seat (10); A drainage head (4) is fixedly mounted on the upper end surface of the accommodating cylinder (1), a drainage pipe (31) is provided at the input end of the drainage head (4), the other end of the drainage pipe (31) is connected to the inner cavity of the connecting plate (6), and the drainage pipe (31) is located on the upper side of the control ball valve.

4. A municipal anti-collision fire hydrant according to claim 3, characterized in that: A control frame (7) is fixedly mounted on the bottom of the accommodating cylinder (1); a connecting arm (8) is rotatably mounted on the side wall of the control frame (7) via a torsion spring; a top pressure roller (13) is rotatably mounted on one end of the connecting arm (8) away from the control frame (7); and the outer wall of the top pressure roller (13) is in rolling contact with the outer wall of the connecting belt (12).

5. A municipal anti-collision fire hydrant according to claim 4, characterized in that: A mounting cylinder (15) is fixedly mounted on the outer wall of the connecting disk (6), a transmission shaft (24) is rotatably mounted on the inner wall of the mounting cylinder (15), and an axial end of the transmission shaft (24) is fixedly connected to a valve stem of the control ball valve; A control plug (22) is elastically mounted in the inner cavity of the mounting cylinder (15); the radial outer wall of the control plug (22) is sealingly fitted with the inner wall of the mounting cylinder (15); and the transmission shaft (24) is controlled to rotate by sliding the control plug (22).

6. A municipal anti-collision fire hydrant according to claim 5, characterized in that: A transmission sleeve (23) is fixedly mounted on the outer wall of the control plug (22), a transmission hemisphere (27) is fixedly mounted on the inner wall of the transmission sleeve (23), a spiral groove is formed on the radial outer wall of the transmission shaft (24), the outer wall of the transmission hemisphere (27) is slidably fitted with the inner wall of the spiral groove, and the axis of the transmission shaft (24) coincides with the axis of the transmission sleeve (23).

7. A municipal anti-collision fire hydrant according to claim 6, characterized in that: A guide cylinder (26) is fixedly mounted on the outer wall of the connecting disk (6), a guide rod (25) is slidably mounted on the inner wall of the guide cylinder (26), one end of the guide rod (25) extends to the outer wall of the guide cylinder (26) and is fixedly connected to the outer wall of the control plug (22).

8. A municipal anti-collision fire hydrant according to claim 7, characterized in that: A mounting frame (17) is fixedly mounted on the inner wall of the accommodating cylinder (1), a storage cylinder (18) is fixedly mounted on the inner wall of the mounting frame (17), a sealing ring (30) is elastically mounted on the inner cavity of the storage cylinder (18), a control tube (19) is fixedly mounted on the bottom of the sealing ring (30), and the inner cavity of the control tube (19) is connected to the inner cavity of the mounting cylinder (15).

9. A municipal anti-collision fire hydrant according to claim 8, characterized in that: A control fork (14) for pressing the control tube (19) is fixedly mounted on the outer wall of the bearing seat (10); A transfer cylinder (21) is fixedly mounted on the bottom of the accommodating cylinder (1), and the bottom of the transfer cylinder (21) is connected to the inner cavity of the mounting cylinder (15) via a conduit; A hard tube (20) is slidably mounted on the inner wall of the adapter tube (21), and the upper end surface of the hard tube (20) is fixedly connected to the inner wall of the control tube (19).

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