Fire water tank and water inlet structure

Abstract

The invention relates to the technical field of fire-fighting water tanks, and discloses a water inlet structure of a fire-fighting water tank, comprising: a water flow device mounted on the side wall of the water tank and used for establishing a water inflow or outflow channel; the bin dividing device is arranged in the water tank and divides the space of the water tank into a first area and a second area, the water flow circulating device is provided with a water inlet pipe and a water outlet pipe installed on the same side as the water inlet pipe in the first area, and an overflow pipe, a spraying water outlet pipe arranged on the same side as the overflow pipe and a fire-fighting water outlet pipe are arranged in the second area; the water supplementing end piece is arranged at the top of the water tank and used for intensively receiving external accidental supplemented water, the water supplementing end piece comprises a water supplementing groove formed in the top of the water tank and a cover plate adjustably covering the water supplementing groove, and the first area and the second area are in a communicating state. The problems that civil water pollution is easily caused by the internal structure of the fire water tank and the water outlet is blocked during fire water use are solved.

Description

Technical Field

[0001] The invention relates to the technical field of fire water tanks, in particular to a fire water tank and a water inlet structure. Background Art

[0002] In order to meet the fire protection needs, high-rise residential buildings are generally equipped with rooftop fire water tanks. Some fire water tanks are also used together with domestic and production water. When the water consumption increases suddenly, the internally connected structural design cannot ensure sufficient water for fire protection purposes, which may lead to insufficient water consumption for fire protection. In addition, the prior art also designs a method of adding rainwater to the fire water tank, but the entry of rainwater may cause pollution of domestic water. At the same time, the upper end of the fire water tank is usually in a normally open state to replenish rainwater. While evaporating and losing water in hot weather, algae and other impurities may be produced in the water tank due to the increase in temperature. The growth of algae on the wall or floating on the water surface increases the risk of blockage of the water outlet inside the water tank, reducing the water supply efficiency during fire fighting operations. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a fire water tank and a water inlet structure, which solve the problem that the internal structure of the fire water tank is prone to cause civilian water pollution and the water outlet is blocked when using fire water.

[0004] To achieve the above object, the present invention provides the following technical solution: a water inlet structure of a fire water tank, comprising:

[0005] A water flow device, which is installed on the side wall of the water tank to establish a channel for water to flow in or out;

[0006] The compartment dividing device is arranged inside the water tank and divides the water tank space into a first area and a second area. The water flow device is provided with a water inlet pipe and a water outlet pipe installed on the same side as the water inlet pipe in the first area, and an overflow pipe and a sprinkler water outlet pipe and a fire water outlet pipe are provided in the second area.

[0007] The water replenishment end piece is arranged on the top of the water tank for centrally receiving occasional water replenishment from the outside. The water replenishment end piece includes a water replenishment groove opened on the top of the water tank and an adjustable cover plate covering the water replenishment groove.

[0008] The first area and the second area are in a connected state, and the connection position is adjustable, and they can produce two functions: water replenishment and box wall cleaning.

[0009] In a specific embodiment, the compartment dividing device includes a positioning plate installed at the center of the bottom of the water tank, and an adjusting plate connected to the positioning plate is adjustably installed at the upper end of the positioning plate;

[0010] The positioning plate includes a mounting base block and an inclined plate arranged on the mounting base block for increasing the water level difference. The inclined left side is parallel to the side wall of the mounting base block, and the right side wall is arranged in an inclined shape. The adjustment plate is a straight plate, and the length of its structure extending up and down is less than the distance between the positioning plate and the top of the water tank. A docking groove adapted to the shape of the inclined plate is opened at the bottom of the adjustment plate, and a rubber layer is attached to the wall of the docking groove and the body of the inclined plate.

[0011] A screen element for filtering out impurities is installed in the second area.

[0012] In a specific embodiment, a receiving groove adapted to the adjusting plate is provided on the top wall of the water tank at the upper end of the adjusting plate, and a control member for controlling the angle adjustment of the cover plate is provided in the receiving groove, and the control member causes the cover plate to generate a rotation path and establish or release the covering state of the water supply groove;

[0013] The control component includes a collision end plate installed in the accommodating groove and extending vertically to the lower end of the accommodating groove, the upper end of the collision end plate is connected to an inner retracted rod, the inner retracted rod is built into the outer cylinder, a through hole that penetrates to the outside is opened on the top wall of the water tank, the outer cylinder abuts against the side wall of the through hole and its cylinder mouth is level with the port of the through hole, and the diameter of the outer cylinder is smaller than the diameter of the collision end plate.

[0014] In a specific embodiment, the length of the outer tube is greater than the length of the through-hole, and a telescopic rod connected to the adjustment plate is installed at the lower end of the collision end plate. The telescopic rod pulls or pushes the collision end plate to indirectly cause the outer tube 333 to retract in the through-hole.

[0015] In a specific embodiment, it is described that the left end of the cover plate is connected to a rotating shaft. Through the rotation of the rotating shaft, the cover plate produces two movement states of covering and detaching relative to the water supply groove. A rocker arm rotatably connected to the outer cylinder is provided at the right end of the rotating shaft. The rocker arm is in the shape of a straight rod and its two ends are respectively connected to the rotating shaft and the side wall of the outer cylinder. The rocker arm and the cover plate form an angle of 90°.

[0016] In a specific embodiment, the water replenishment trough is opened at the top of the water tank in the second area, and the water replenishment trough includes a first water flow trough and a second water flow trough. The first water flow trough and the second water flow trough are opened in a state of being shallow in the front and deep in the back as a whole.

[0017] In a specific embodiment, a support seat is provided at the left end of the cover plate to stabilize the structure of the cover plate in a vertical state, and air holes are provided on the longitudinal plate of the support seat and on the cover plate.

[0018] A fire water tank comprises a water tank and the above-mentioned water inlet structure.

[0019] Compared with the prior art, the present invention provides a fire water tank and water inlet structure, which has the following beneficial effects:

[0020] In the technical solution disclosed in the present invention, a partition is arranged in the water tank to divide the aqueous internal space, with one part serving as the first area for storing civil water and the other part serving as the second area for storing fire water. In the process of injecting water into the first area, the injection water levels in the first area and the second area are raised by combining the adjusting plate and the positioning plate. After the water level in the first area reaches a preset height, the adjusting plate is disconnected from the positioning plate, and finally the high water level in the first area is used to inject the low water level in the second area, forming a water jump phenomenon, and then the collision between water particles achieves a cleaning effect on the tank wall in the second area, thereby achieving the purpose of cleaning the side wall of the water tank while injecting water into the second area, thereby reducing the probability of blockage when using fire water.

[0021] In the present solution, after the adjusting plate and the positioning plate are combined, the cover plate is caused to be out of contact with the water supply groove, thereby creating a path for rainwater to flow downward, and after the adjusting plate and the positioning plate are disconnected, the cover plate will be in contact with the water supply groove, that is, the cover plate covers the water supply groove, thereby blocking the path for rainwater to enter the second area, thereby reducing the risk of rainwater being swept into the first area due to the hydraulic jump phenomenon during the process of water replenishment from the first area to the second area, causing pollution of domestic water, and enhancing the water safety of the first area during the process of water replenishment in the second area.

[0022] This solution utilizes wind holes set on the cover plate to increase the path of airflow through the cover plate on windy days, reduce the damage to the cover plate caused by the airflow, and a support seat is set at the left end of the cover plate. The support seat supports the cover plate to produce a horizontal supporting force in the right direction, so that after the airflow or external force acts on the cover plate, the support seat can effectively support it, thereby improving the structural stability of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a fire water tank and a water inlet structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of a fire water tank and a water inlet structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of a fire water tank and a water inlet structure of the present invention;

[0026] Figure 4 It is a schematic diagram of a combination of a positioning plate and an adjusting plate of a fire water tank and a water inlet structure of the present invention;

[0027] Figure 5 A schematic diagram of a half-section structure of a fire water tank and a water inlet structure of the present invention;

[0028] Figure 6 for Figure 5 Schematic diagram of the structure at A in the middle;

[0029] Figure 7 A schematic diagram of the structure of a regulating plate of a fire water tank and a water inlet structure of the present invention;

[0030] Figure 8 The present invention is a schematic diagram of the screen structure of a fire water tank and a water inlet structure.

[0031] In the figure: 1. water flow device; 11. water inlet pipe; 12. water outlet pipe; 13. overflow pipe; 14. sprinkler outlet pipe; 15. fire outlet pipe; 2. compartment device; 21. first area; 22. second area; 23. positioning plate; 231. mounting base block; 232. tilting plate; 24. adjusting plate; 241. docking groove; 242. sliding sleeve; 25. screen member; 251. screen plate; 252. frame; 253. lifting plate; 3. water supply end member; 31. water supply groove; 311. first water flow groove; 312. second water flow groove; 313. water flow hole; 33. control member; 331. collision end plate; 332. retracted rod; 333. outer cylinder; 334. compression spring; 335. rotating shaft; 336. rocker arm; 35. air flow hole; 36. cover plate; 4. water tank. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 8The specific problem addressed by this solution is that the number of existing high-rise residential buildings has increased, and high-rise residential buildings are generally equipped with rooftop fire water tanks 4 based on fire protection needs. Some fire water tanks 4 are also used together with domestic and production water. When the water consumption suddenly increases, the internally connected structural design cannot ensure sufficient water for fire protection purposes, which may lead to insufficient water consumption for fire protection. In addition, the prior art also designs a method of adding rainwater to the fire water tank 4, but the entry of rainwater may cause pollution of domestic water. At the same time, the upper end of the fire water tank 4 is usually in a normally open state to replenish rainwater. While evaporating and losing water in hot weather, algae and other impurities may be produced in the water tank 4 due to the increase in temperature. Its growth on the wall or floating on the water surface increases the risk of blockage of the water outlet inside the water tank 4, thereby reducing the water supply efficiency during fire fighting operations. Based on the above problems caused by the water tank 4 itself and the water inlet structure for fire water and residential water use, this solution describes a water inlet structure for a fire water tank 4, which utilizes a partition plate set in the water tank 4 to divide the aqueous internal space, one part of which is used as the first area 21 for storing residential water, and the other part is used as the second area 22 for storing fire water. In the process of injecting water into the first area 21, the injection water level in the first area 21 and the second area 22 is raised through the combination of the adjusting plate 24 and the positioning plate 23. After the water level in the first area 21 reaches a preset height, the adjusting plate 24 is disconnected from the positioning plate 23, and finally the high water level in the first area 21 is used to inject the low water level in the second area 22, forming a water jump phenomenon, and then the collision between water particles achieves a cleaning effect on the box wall of the second area 22, thereby achieving the purpose of cleaning the side wall of the water tank 4 while injecting water into the second area 22, thereby reducing the probability of blockage when using fire water.

[0034] In the present embodiment, a water inlet structure of a fire water tank 4 is specifically described, and a water circulation device 1 and a compartment device 2 are specifically arranged, wherein the water circulation device 1 is used to replenish water into the water tank 4 and construct a channel for flowing out from the water tank 4 to the outside, so as to generate circulation of water in the water tank 4, and the compartment device 2 divides the water tank 4 into two parts, one part is used to hold domestic water, and the other part is used for storage, so as to facilitate water supply to the water supply ring network of the fire hydrant or the sprinkler system at a certain time, that is, when domestic water is replenished, water can be replenished into the water tank 4, but when pumping water, fire water and domestic water are used separately, and domestic water is not mixed with fire water, so as to ensure the safety of domestic water.

[0035] In order to divide the internal space of the water tank 4 so that it can ensure water for fire fighting and domestic use respectively, and to make it independent during use, a compartment device 2 is provided inside the water tank 4 and divides the space of the water tank 4 into a first area 21 and a second area 22. The first area 21 and the second area 22 are in a connected state, and their connection positions are adjustable. The adjusted connection positions can produce two functions of replenishing water and cleaning the tank wall. The water flow device 1 is provided with an inlet pipe 11 and an outlet pipe 12 installed on the same side as the inlet pipe 11 in the first area 21. The inlet pipe 11 is installed above the outlet pipe 12, and a check valve is installed on the outlet pipe 12. The inlet pipe 11 is provided with a hydraulic control valve for detecting the water level. The overflow pipe 13 and the spray outlet pipe 14 and the fire outlet pipe 15 are provided in the second area 22. The sprinkler outlet pipe 14 and the fire outlet pipe 15 are placed side by side front and back, and the overflow pipe 13 is installed above the fire outlet pipe 15. The water inlet pipe 11 and the water outlet pipe 12 arranged in the first area 21 or the sprinkler outlet pipe 14 and the fire outlet pipe 15 installed in the second area 22 establish a channel for water to flow in or out, which can promote water replenishment in the first area 21 or water replenishment from the first area 21 to the second area 22.

[0036] The compartment device 2 includes a positioning plate 23 installed at the center position of the bottom of the water tank 4, and an adjusting plate 24 connected to the positioning plate 23 is adjustably installed on the upper end of the positioning plate 23. The sliding scheme of the adjusting plate 24 in the water tank 4 is set in this embodiment as follows: a sliding sleeve 242 embedded in the side wall of the water tank 4 is provided at the front and rear ends of the adjusting plate 24, and the sliding sleeve 242 is threadedly connected to the screw installed on the side wall of the water tank 4, and the notch adapted to the sliding sleeve 242 opened on the side wall of the water tank 4 is adapted to the sliding length of the adjusting plate 24. The positioning plate 23 includes a mounting bottom block 231 and an inclined plate 232 arranged on the mounting bottom block 231 for increasing the water surface drop. The left side is parallel to the side wall of the mounting base block 231, while the right side wall is inclined. In the initial state, the adjusting plate 24 and the positioning plate 23 are in a docking state. When the hydraulic control valve detects that the water level reaches a preset height, the screw is driven to rotate, driving the adjusting plate 24 to move, thereby reaching the gap, so that the water in the first area 21 leaks into the second area 22. The adjusting plate 24 is a straight plate, and the length of its structure extending up and down is less than the distance between the positioning plate 23 and the top of the water tank 4. A docking groove 241 adapted to the shape of the inclined plate 232 is provided at the bottom of the adjusting plate 24. A rubber layer is attached to the groove wall of the docking groove 241 and the plate body of the inclined plate 232 to increase the sealing performance during docking. A screen member 25 for filtering impurities is installed in the second area 22. The screen member 25 includes a screen plate 251 and a frame 252 installed around the screen plate 251. The cross-section of the frame 252 is triangular, and its horizontal plate moves in contact with the side wall of the water tank 4 in the second area 22. A lifting plate 253 is installed at the bottom of the frame 252 at its right end. A sleeve is installed at the right end of the lifting plate 253, and the sleeve is threadedly connected to a screw embedded in the inner wall of the water tank 4. While driving the lifting plate 253 to rise and fall, the lifting plate 253 drives the screen to move upward. After the adjustment plate 24 and the positioning plate 23 are connected and then separated, the screw starts to rotate and drives the lifting plate 253 to move upward. As a result, the screen carries the impurities floating in the water on the screen as they rise, thereby increasing the cleanliness of the water in the second area 22 and reducing the risk of blockage of the sprinkler outlet pipe 14 and the fire outlet pipe 15.

[0037] In order to increase the intensity of receiving occasional rainfall after the second area 22 is filled with water or when it continues to be in a non-filled state, a water filling end piece 3 is added in the present solution, which is arranged at the top of the water tank 4. The water filling end piece 3 includes a water filling groove 31 opened at the top of the water tank 4 and a cover plate 36 that can adjustably cover the water filling groove 31. The left end of the cover plate 36 is connected to a rotating shaft 335. Through the rotation of the rotating shaft 335, the cover plate 36 produces two movement states of covering and detaching relative to the water filling groove 31. The right end of the rotating shaft 335 is provided with a rocker arm 336 that is rotatably connected to the outer cylinder 333. The rocker arm 336 is in the shape of a straight rod and its two ends are respectively connected to the rotating shaft 335 and the side wall of the outer cylinder 333. The rocker arm 336 and the cover plate 36 form an angle of 90°. The water filling groove 31 is opened at the top of the water tank 4 in the second area 22. The water filling groove 31 includes a first water trough 311 and a second water trough 312. The water tank 312, the first water tank 311 and the second water tank 312 are generally opened in a state of shallow front and deep back, the second water tank 312 is opened deeper than the first water tank 311, the first water tank 311 and the second water tank 312 are both provided with water holes, the diameter of the water holes on the first water tank 311 gradually decreases in the process of approaching the second water tank 312, the water holes 313 on the second water tank 312 are opened with equal diameters and smaller than the smallest water holes 313 on the first water tank 311. A receiving groove adapted to the adjusting plate 24 is opened on the top wall of the water tank at the upper end of the adjusting plate 24, and a control member 33 for controlling the angle adjustment of the cover plate 36 is arranged in the receiving groove, and the control member 33 prompts the cover plate 36 to generate a rotation path and establish or release the covering state of the water replenishment tank 31. The control member 33 includes a collision end plate 331 installed in the receiving groove and extending vertically from the lower end of the receiving groove. The upper end of the collision end plate 331 is connected to an inner retracting rod 332, which is built into the outer tube 333. A compression spring 334 is sleeved on the inner retracting rod 332. The two ends of the compression spring 334 are respectively connected to the collision end plate 331 and the outer tube 333. A through hole that penetrates the outside is opened on the top wall of the water tank 4. The outer tube 333 abuts against the side wall of the through hole and its tube mouth is horizontal with the port of the through hole. The diameter of the outer tube 333 is smaller than the diameter of the collision end plate 331. The length of the outer tube 333 is greater than the length of the through hole. A telescopic rod connected thereto is installed on the structure of the outer tube 333 placed at the lower end of the through hole. The telescopic rod pulls the outer tube 333 to make it retract in the through hole. A support seat is provided at the left end of the cover plate 36 for fixing the structure stability of the cover plate 36 in a vertical state. Air holes 35 are provided on the longitudinal plate of the support seat and on the cover plate 36. The opening position of the air holes 35 is offset from the position of the water holes 313 and the opening diameter of the air holes 35 is larger than the maximum diameter of the water holes 313. The opening position of the air outlet on the cover plate 36 is consistent with the opening position of the air holes 35 on the support seat.Wind holes 35 are provided on the cover plate 36 to increase the path of airflow passing through the cover plate 36 on windy days, thereby reducing the damage to the cover plate 36 caused by the airflow, and a support seat is provided at the left end of the cover plate 36. The support seat supports the cover plate 36 to generate a horizontal supporting force in the right direction, so that after the airflow or external force acts on the cover plate 36, the support seat can effectively support it, thereby improving the structural stability of the cover plate 36. After the adjustment plate 24 is combined with the positioning plate 23, the cover plate 36 is caused to be out of contact with the water replenishment groove 31, thereby creating a path for rainwater to flow downward, and after the adjustment plate 24 and the positioning plate 23 are disconnected, the cover plate 36 will be in contact with the water replenishment groove 31, that is, the cover plate 36 covers the water replenishment groove 31, thereby blocking the path for rainwater to enter the second area 22, thereby reducing the risk of rainwater being swept into the first area 21 due to the hydraulic jump phenomenon during the process of water replenishment from the first area 21 to the second area 22, causing pollution of domestic water, and enhancing the water safety of the first area 21 during the water replenishment in the second area 22.

[0038] A fire water tank 4 comprises a water tank 4 and the above-mentioned water inlet structure.

[0039] The control method of the electrical components appearing in this article is to automatically control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water inlet structure for a fire water tank, characterized in that: include: A water flow device (1) is installed on the side wall of the water tank (4) to establish a channel for water to flow in or out; The compartment dividing device (2) is arranged inside the water tank (4) and divides the space of the water tank (4) into a first area (21) and a second area (22); the water flow device (1) is provided with a water inlet pipe (11) and a water outlet pipe (12) installed on the same side as the water inlet pipe (11) in the first area (21); and an overflow pipe (13) and a spray outlet pipe (14) and a fire outlet pipe (15) are provided in the second area (22); The water replenishment end piece (3) is arranged on the top of the water tank (4) and is used for centrally receiving occasional water replenishment from the outside. The water replenishment end piece (3) comprises a water replenishment groove (31) opened on the top of the water tank (4) and a cover plate (36) that can adjustably cover the water replenishment groove (31). The first area (21) and the second area (22) are in a connected state, and the connection position is adjustable, and has two functions of replenishing water and cleaning the box wall.

2. The water inlet structure of a fire water tank according to claim 1, characterized in that: The compartment device (2) comprises a positioning plate (23) installed at the center of the bottom of the water tank (4), and an adjusting plate (24) connected to the positioning plate (23) is adjustably installed on the upper end of the positioning plate (23); The positioning plate (23) comprises a mounting base block (231) and an inclined plate (232) arranged on the mounting base block (231) for increasing the water level difference, the inclined left side is parallel to the side wall of the mounting base block (231), and the right side wall is arranged in an inclined shape, the adjustment plate (24) is a straight plate, and the length of its structure extending up and down is less than the distance between the positioning plate (23) and the top of the water tank (4), the bottom of the adjustment plate (24) is provided with a docking groove (241) adapted to the shape of the inclined plate (232), and a rubber layer is attached to the groove wall of the docking groove (241) and the plate body of the inclined plate (232); A screen element (25) for filtering impurities is installed in the second area (22).

3. A water inlet structure for a fire water tank according to claim 2, characterized in that: A receiving groove adapted to the adjusting plate (24) is provided on the top wall of the water tank at the upper end of the adjusting plate (24), and a control member (33) for controlling the angle adjustment of the cover plate (36) is arranged in the receiving groove, and the control member (33) causes the cover plate (36) to generate a rotation path and establish or release the covering state of the water supply groove (31); The control member (33) comprises a collision end plate (331) installed in the receiving groove and extending vertically toward the lower end of the receiving groove. The upper end of the collision end plate (331) is connected to an inner retracted rod (332). The inner retracted rod (332) is built into the outer tube (333). A through hole that penetrates to the outside is opened on the top wall of the water tank (4). The outer tube (333) abuts against the side wall of the through hole and its tube mouth is level with the end of the through hole. The diameter of the outer tube (333) is smaller than the diameter of the collision end plate (331).

4. The water inlet structure of a fire water tank according to claim 3, characterized in that: The length of the outer cylinder (333) is greater than the length of the through-opening. A telescopic rod connected to the adjustment plate is installed at the lower end of the collision end plate (331). The telescopic rod pulls or pushes the collision end plate (331) to indirectly cause the outer cylinder (333) to retract in the through-opening.

5. The water inlet structure of a fire water tank according to claim 3, characterized in that: The left end of the cover plate (36) is connected to a rotating shaft (335). Through the rotation of the rotating shaft (335), the cover plate (36) generates two motion states relative to the water supply groove (31): covering and detaching. The right end of the rotating shaft (335) is provided with a rocker arm (336) rotatably connected to the outer cylinder (333). The rocker arm (336) is in the shape of a straight rod and its two ends are respectively connected to the rotating shaft (335) and the side wall of the outer cylinder (333). The rocker arm (336) and the cover plate (36) form an angle of 90 degrees.

6. The water inlet structure of a fire water tank according to claim 3, characterized in that: The water replenishment trough (31) is opened at the top of the water tank (4) in the second area (22), and the water replenishment trough (31) includes a first water flow trough (311) and a second water flow trough (312). The first water flow trough (311) and the second water flow trough (312) are opened in a state where the front is shallow and the back is deep.

7. The water inlet structure of a fire water tank according to claim 5, characterized in that: A support seat is provided at the left end of the cover plate (36) for fixing the cover plate (36) to ensure structural stability when the cover plate (36) is in a vertical state. Air holes (35) are provided on the longitudinal plate of the support seat and on the cover plate (36).

8. A fire water tank, characterized in that: It comprises a water tank (4) and the water inlet structure according to any one of claims 1 to 7.

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