Automatic control device for water supplement of fire pool

Abstract

The utility model discloses an automatic control device for water replenishment of a fire pool, which comprises a water suction pump, an automatic water replenishment control system and a water replenishment control system. The input end of the water suction pump is arranged in a river and detachably connected with a filter; the top of the disinfection tank is detachably connected with an ultraviolet lamp which downwards extends into the disinfection tank, and an inner cavity of the disinfection tank is communicated with the output end of the water suction pump and is provided with a microorganism detection sensor; the input end of the make-up pump is communicated with the inner cavity of the disinfection tank; the reservoir is hermetically arranged underground and is internally provided with a first liquid level sensor for detecting the water level; the input end of the fire pump is communicated with the reservoir; and a control assembly. Compared with the prior art, the automatic control device has the advantages that particle impurities in a river are filtered out through the filter, microorganisms in water flow entering the disinfection tank are killed through the ultraviolet lamp, so that the quality of water entering the water storage tank is improved, in addition, the filter is detachably connected with the water suction pump, and the ultraviolet lamp is detachably connected with the disinfection tank; maintenance and replacement are convenient, and long-term normal and stable operation of fire-fighting equipment is further guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of fire water tank replenishment technology, and in particular to an automatic control device for fire water tank replenishment. Background Technology

[0002] In hazardous chemical enterprises, fire-fighting water pools are a crucial source of water for summer tanker sprinkler systems, storage tank sprinkler systems, and emergency fire-fighting water supply. Previously, replenishing the water level in fire-fighting pools relied on dock workers manually operating water pumps. This method had significant drawbacks. Firstly, manual operation was prone to negligence, leading to insufficient water levels in the fire-fighting pools and an inability to provide enough fire-fighting water in emergencies, thus affecting the effectiveness of emergency response. Secondly, manually monitoring the water level and operating the water pumps in real time increased the labor intensity of workers and was inefficient.

[0003] Based on the above, in the existing technology, a liquid level sensor is installed in the fire water tank to detect the water level and convert the water level information into an electrical signal, which is then transmitted to the monitoring system. The monitoring system controls the water supply pump to start, drawing external water to replenish the fire water tank, so that the water level in the fire water tank is maintained within a certain range (the liquid level is usually controlled within 2.2m-3m).

[0004] However, in the aforementioned technologies, the external water source drawn by the water replenishment pump mainly comes from external rivers. Rivers contain some impurities and microorganisms. If the water replenishment pump directly sends water into the fire water tank, it will settle at the bottom of the tank or enter the fire pump with the water flow, causing blockages, affecting the normal start-up of fire-fighting equipment and the normal water supply, and delaying the opportunity to extinguish the fire. Furthermore, rivers contain a large number of microorganisms, such as bacteria and algae. In the relatively stagnant environment of the fire water tank, these microorganisms are prone to multiply in large quantities, leading to water quality deterioration, producing odors and slime. The microorganisms themselves can not only clog the filter devices and nozzles, but may also cause biological corrosion to the fire-fighting equipment, affecting the normal use of the fire water tank.

[0005] Therefore, it is necessary to improve the existing automatic water replenishment control device for fire water tanks. Utility Model Content

[0006] The purpose of this invention is to overcome the defects in the existing technology and provide an automatic control device for replenishing fire water tanks to improve the quality of stored water and ensure the normal use of fire-fighting equipment.

[0007] To achieve the above-mentioned technical effects, the technical solution of this utility model is: an automatic control device for replenishing water in a fire-fighting water tank, comprising:

[0008] A water pump with its inlet located in the river and detachably connected to a filter;

[0009] The disinfection pool has an ultraviolet lamp that can be detachably connected to the top and extends downward into the disinfection pool. The inner cavity is connected to the output end of the water pump and is equipped with a microbial detection sensor.

[0010] A water replenishment pump, the input end of which is connected to the inner cavity of the disinfection tank;

[0011] The water storage tank is enclosed and installed underground, and is equipped with a first liquid level sensor to detect the water level.

[0012] The fire pump's input end is connected to the water storage tank;

[0013] The control component is electrically connected to the water pump, ultraviolet lamp, microbial detection sensor, water replenishment pump, first liquid level sensor and fire pump.

[0014] Preferably, in order to achieve a detachable connection between the filter and the input end of the water pump, the filter includes a filter cylinder that is threadedly connected to the input end of the water pump, the side wall of the filter cylinder is densely covered with filter holes, and the end of the filter cylinder away from the water pump is closed.

[0015] Preferably, in order to improve filtration accuracy, the filter further includes a filter cloth disposed between the inner wall of the filter cylinder and the outer wall of the water pump input end.

[0016] Preferably, in order to achieve automatic cleaning and unblocking of the filter and prevent the filter from becoming clogged, the axis of the filter cylinder is parallel to the flow direction of the river.

[0017] Preferably, to further facilitate replacement and maintenance, the water pump is connected to a lifting assembly, and the output end of the water pump is connected to the inner cavity of the disinfection tank through a corrugated hose.

[0018] Preferably, in order to achieve a detachable connection between the ultraviolet lamp and the disinfection pool, the ultraviolet lamp is inserted into the disinfection pool in the vertical direction and is connected to a locking unit that locks it onto the disinfection pool.

[0019] Preferably, to facilitate the fixing and disassembly of the ultraviolet lamp, the locking unit includes a locking screw fixed to the disinfection pool with its axis pointing upward and a locking strip threadedly connected to the locking screw. The moving path of the locking strip includes a first station and a second station. In the first station, the projections of the locking strip and the ultraviolet lamp on the horizontal plane intersect, and in the second station, the projections of the locking strip and the ultraviolet lamp on the horizontal plane are separated.

[0020] Preferably, in order to reduce the power consumption of the fire pump, a downward-extending pumping pipe is provided in the water storage tank. The pumping pipe is a rubber pipe, with its top end connected to the input end of the fire pump and its bottom end connected to a float. The float moves vertically within the water storage tank.

[0021] Preferably, in order to facilitate the lifting and lowering of the bottom end of the pumping pipe, a sliding sleeve is fixedly connected to the bottom end of the pumping pipe, and a guide post extending in the vertical direction is provided in the water storage tank. The sliding sleeve is sleeved on the outside of the guide post and is in clearance fit with the inner wall of the guide post.

[0022] Preferably, in order to reduce the frictional force of the bottom of the pumping pipe moving up and down, the sliding sleeve is provided with rollers distributed along the circumference of the sliding sleeve and with the center line horizontal. The rollers are rotatably arranged around their own center line, and the outer edge of the rollers intersects the plane of the inner wall of the sliding sleeve.

[0023] In summary, compared with the prior art, the automatic control device for replenishing fire water tanks of this utility model improves the water quality entering the storage tank by filtering out particulate impurities from the river through a filter and using ultraviolet lamps to kill microorganisms in the water flowing into the disinfection tank. In addition, the filter and the water pump are detachably connected, and the ultraviolet lamp and the disinfection tank are detachably connected, which facilitates maintenance and replacement and further ensures the long-term normal and stable operation of fire-fighting equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the first embodiment;

[0025] Figure 2 yes Figure 1 Cross-sectional structural diagram;

[0026] Figure 3 yes Figure 2 Enlarged view of part A;

[0027] Figure 4 This is a schematic diagram of the connection structure between the water pump and the filter in the first embodiment;

[0028] Figure 5 yes Figure 4 Cross-sectional structural diagram;

[0029] Figure 6 yes Figure 5 Cross-sectional structural diagram;

[0030] Figure 7 This is a schematic diagram of the water storage tank in the second embodiment;

[0031] Figure 8 yes Figure 7 Cross-sectional structural diagram;

[0032] Figure 9 yes Figure 8 Enlarged view of part C;

[0033] Figure 10 yes Figure 7 An explosion diagram;

[0034] In the diagram: 1. Water pump; 11. Lifting assembly; 12. Corrugated hose; 13. Outer convex ring; 14. Sealing ring; 2. Filter; 21. Filter cylinder; 211. Filter holes; 212. Inner convex ring; 22. Filter cloth; 3. Disinfection tank; 31. Ultraviolet lamp; 311. Lamp tube; 312. Glass sleeve; 313. Lamp holder; 32. Microbial detection sensor; 33. Locking unit; 331. Locking screw; 332. Locking strip; 34. Drain valve; 35. Second liquid level sensor; 4. Water replenishment pump; 5. Water storage tank; 51. First liquid level sensor; 52. Guide column; 53. Tank body; 54. Tank cover; 6. Fire pump; 7. Control device; 8. Pumping pipe; 81. Pumping shell; 811. Through hole; 82. Float; 83. Sliding sleeve; 84. Roller sleeve. Detailed Implementation

[0035] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0036] First Embodiment

[0037] like Figures 1-6 As shown, an automatic control device for replenishing water in a fire-fighting water tank according to the first embodiment of this utility model includes:

[0038] A water pump 1, with its input end located in the river and detachably connected to a filter 2;

[0039] The disinfection pool 3 has an ultraviolet lamp 31 that can be detachably connected to the top and extends downward into the disinfection pool 3. The inner cavity is connected to the output end of the water pump 1 and is equipped with a microbial detection sensor 32.

[0040] Water supply pump 4, with its input end connected to the inner cavity of disinfection tank 3;

[0041] The water storage tank 5 is enclosed and installed underground, and is equipped with a first liquid level sensor 51 for detecting the water level.

[0042] Fire pump 6, with its input end connected to water storage tank 5;

[0043] The control component 7 is electrically connected to the water pump 1, the ultraviolet lamp 31, the microbial detection sensor 32, the water replenishment pump 4, the first liquid level sensor 51, and the fire pump 6.

[0044] In this embodiment, the water level in the reservoir 5 is detected by the first liquid level sensor 51, and the water level data is transmitted to the control component 7. When the water level drops, the pump 1 is controlled to draw water from the river. The filter 2 is used to filter out impurities mixed in the water flow. After the water flows into the disinfection tank 3, it is sterilized and disinfected by the ultraviolet lamp 31 to significantly reduce the concentration of microorganisms in the water flow, thereby improving the water quality. Then the water replenishment pump 4 is started to transport the improved water flow to the reservoir 5. When the water level in the reservoir 5 rises to the preset value, the water replenishment pump 4 stops running.

[0045] Because the water quality in the reservoir 5 has been greatly improved, the accumulation of particulate impurities in the reservoir 5 has been avoided, as well as the large-scale reproduction of microorganisms. This ensures that the fire pump 6 can smoothly pump the water in the reservoir 5, thereby ensuring the normal and stable operation of the fire-fighting equipment.

[0046] In addition, the filter 2 is detachably connected to the input end of the water pump 1, and the ultraviolet lamp 31 is detachably connected to the disinfection pool 3. This facilitates the disassembly, maintenance and replacement of the filter 2 and the ultraviolet lamp 31, so as to ensure the long-term sustainable operation of the device in this embodiment.

[0047] In this embodiment, the filter 2 includes a filter cylinder 21 that is threadedly connected to the input end of the water pump 1. The side wall of the filter cylinder 21 is densely covered with filter holes 211, and the end of the filter cylinder 21 away from the water pump 1 is closed. A further improvement is that the filter 2 also includes a filter cloth 22 disposed between the inner wall of the filter cylinder 21 and the outer wall of the input end of the water pump 1.

[0048] Specifically, refer to Figures 4-6 As shown, the input end of the water pump 1 is provided with an outer convex ring 13, and the side of the outer convex ring 13 facing away from the water pump 1 is provided with an elastic sealing ring 14, preferably a rubber ring. The inner circumferential inner wall of the filter cylinder 21 is provided with an inner convex ring 212, and the inner circumferential inner wall of the inner convex ring 212 is detachably connected to the input end of the water pump 1 to achieve a detachable connection between the water pump 1 and the filter cylinder 21. The outer wall of the filter cylinder 21 is provided with filter holes 211 to filter out larger impurities such as branches, leaves, and plastic bags in the river. The inner side of the filter cylinder 21 is provided with a filter cloth 22. The filter cloth 22 has a cylindrical structure, with one end connected to the inner convex ring 212 and the other end connected to the closed end of the filter cylinder 21. With the above structure, a double-layer filtration structure is formed by the filter cylinder 21 and the filter cloth 22. The mesh size of the filter cloth 22 is much smaller than the inner diameter of the filter hole 211, which greatly improves the filtration accuracy and avoids damage to the filter cloth 22 caused by direct contact between some large sharp objects and the filter cloth 22. The other end of the filter cylinder 21 away from the closed end abuts against the sealing ring 14, thereby achieving a sealed connection between the filter cylinder 21 and the outer convex ring 13 at the input end of the water pump 1.

[0049] A further improvement is that the axis of the filter cartridge 21 is parallel to the direction of the river flow.

[0050] This design allows impurities adhering to the outer surface of the filter cylinder 21 to flow with the river's water flow, thus using the river's own water flow to flush and clean the outside of the filter cylinder 21 and prevent clogging.

[0051] A further improvement is that the water pump 1 is connected to a lifting assembly 11, and the output end of the water pump 1 is connected to the inner cavity of the disinfection pool 3 through a corrugated hose 12.

[0052] In this embodiment, the lifting assembly 11 is a hydraulic cylinder with its cylinder barrel pointing vertically upwards. Its bottom end is fixed to the ground, and its top end is connected to the bottom surface of the water pump 1. With this structure, the height of the water pump 1 can be easily adjusted via the lifting assembly 11, thereby adjusting the height of the filter 2 connected to its input end. During use, the filter 2 is submerged below the river's surface to ensure that the water pump 1 can smoothly draw water from the river into the disinfection pool 3. During maintenance, the height of the water pump 1 is increased by the lifting assembly 11, allowing the filter 2 to move upwards above the river's surface, facilitating disassembly, maintenance, and replacement of the filter 2 at the water pump 1's input end. Both the input and output ends of the water pump 1 are made of rigid stainless steel pipes, while a corrugated hose 12 is installed at the output end of the water pump 1. This allows the corrugated hose 12 to maintain the connection between the output end of the water pump 1 and the disinfection pool 3 even as the position of the water pump 1 changes due to the operation of the lifting assembly 11.

[0053] A further improvement is that the ultraviolet lamp 31 is inserted vertically into the disinfection pool 3 and connected to a locking unit 33 that locks it onto the disinfection pool 3. The locking unit 33 includes a locking screw 331 fixed to the disinfection pool 3 with its axis pointing upward and a locking strip 332 threadedly connected to the locking screw 331. The movement path of the locking strip 332 includes a first station and a second station. At the first station, the projections of the locking strip 332 and the ultraviolet lamp 31 on the horizontal plane intersect, while at the second station, the projections of the locking strip 332 and the ultraviolet lamp 31 on the horizontal plane are separated.

[0054] The specific structure of disinfection pool 3 is as follows: Figure 2 and Figure 3 As shown, a microbial detection sensor 32 is installed at the bottom of the disinfection tank 3, and a drain outlet is installed at the bottom. The drain outlet is equipped with a drain valve 34 and is connected to the input end of the water replenishment pump 4. A second liquid level sensor 35 is installed at the top of the disinfection tank 3. An ultraviolet lamp 31 is distributed in a ring array inside the disinfection tank 3 and is detachably connected to the disinfection tank 3.

[0055] The second liquid level sensor 35 detects the liquid level in the disinfection tank 3. When the liquid level in the disinfection tank 3 rises to the preset level, the water pump 1 stops pumping water from the river into the disinfection tank 3. An ultraviolet lamp 31 is used to sterilize the water flow in the disinfection tank 3 to reduce the concentration of microorganisms in the water. The concentration of microorganisms is detected by a microbial detection sensor 32. The microbial detection sensor 32 can be of various types, such as a fluorescence sensor or turbidity sensor (both optical sensors), a microbial fuel cell sensor or an ion-selective electrode sensor (both electrochemical sensors), or an enzyme sensor or an immunosensor (both biological sensors). When the concentration of microorganisms in the disinfection tank 3 decreases to a certain range, the drain valve 34 is opened, and the water replenishment pump 4 is started to transport the disinfected water from the disinfection tank 3 to the storage tank 5.

[0056] The top of the disinfection pool 3 is provided with a stepped hole, the bottom diameter of which is smaller than the top diameter. The ultraviolet lamp 31 includes a lamp tube 311, a glass sleeve 312 that is closed at the bottom and fitted outside the lamp tube 311, and a lamp holder 313 that is fixed to the top of the glass sleeve 312 and the lamp tube 311. The lamp holder 313 is inserted into the stepped hole to realize the detachment and connection of the ultraviolet lamp 31 and the disinfection pool 3.

[0057] Locking units 33 are arranged in a ring array on the top of the disinfection pool 3 and are spaced apart from the UV lamps 31 along the circumference of the disinfection pool 3. In each locking unit 33, the locking screw 331 extends vertically and has a convex cap fixed at its top. The locking strip 332 is threadedly connected to the locking screw 331. With the above structure, by rotating the locking strip 332 to the first position, the locking strip 332 is made to fit against the top of the disinfection pool 3, and its two ends abut against the top of the lamp holder 313, thereby locking the UV lamp 31 onto the disinfection pool 3 and preventing it from falling off. When the locking strip 332 is rotated to the second position, it is separated from the projection of the UV lamp 31 on the horizontal plane. After rotating the locking strips 332 on the adjacent sides of the UV lamp 31 to the second position, the UV lamp 31 can be removed from bottom to top for maintenance, or a new UV lamp 31 can be inserted into the disinfection pool 3 from top to bottom through the stepped hole to complete the assembly.

[0058] In this embodiment, the water storage tank 5 is pre-buried underground and mainly includes a tank body 53 with an open top and a tank cover 54 fixedly installed on top of the tank body 53, making the water storage tank 5 a closed structure. This closed structure effectively prevents impurities such as leaves, garbage, and dust from falling in, reducing water pollution and preventing debris from clogging pipes and nozzles of fire-fighting equipment, ensuring the equipment can operate normally in emergencies. Secondly, it prevents direct sunlight, avoiding the growth of algae and other microorganisms, and also prevents rainwater from directly washing in pollutants and reducing water evaporation, helping to maintain stable water quality and good performance of fire-fighting water. Simultaneously, the closed structure also prevents people or animals from accidentally falling into the water storage tank 5, avoiding drowning accidents. Finally, pre-burying the water storage tank 5 underground reduces the erosion of the equipment by natural factors such as wind, sun, and rain, extending the equipment's service life.

[0059] A water inlet is provided on the pool cover 54. A water inlet pipe 8 is fixedly connected to the bottom of the water inlet. The water inlet pipe 8 extends downward in the vertical direction to a gap with the inner bottom wall of the pool body 53. The input end of the fire pump 6 is connected to the top of the water inlet. In this way, after the fire pump 6 is started, it can draw water from the bottom of the water storage pool 5 through the water inlet pipe 8 and deliver it to the fire-fighting equipment.

[0060] Second Embodiment

[0061] like Figures 7-10 As shown, the second embodiment of this utility model is an automatic control device for replenishing water in a fire water tank. Based on the first embodiment, the difference is that the pumping pipe 8 is a rubber pipe, the top end of which is connected to the input end of the fire pump 6, and the bottom end is connected to a float 82. The float 82 moves vertically within the water storage tank 5.

[0062] By installing a float 82 at the bottom of the pumping pipe 8, and by making the pumping pipe 8 a flexible rubber tube, the position of the bottom of the pumping pipe 8 can change with the change of the liquid level as the float 82 changes. Thus, when the fire pump 6 is pumping water, it can draw water from the water storage tank 5 near the liquid level, reducing the height difference of the water flow through the pumping pipe 8, thereby saving the water delivery power consumption of the fire pump 6 and achieving energy saving.

[0063] Specifically, a sliding sleeve 83 is fixedly connected to the bottom end of the pumping pipe 8. A guide post 52 extending vertically is provided inside the water storage tank 5. The sliding sleeve 83 is sleeved on the outside of the guide post 52 and has a clearance fit with the inner wall of the guide post 52. Roller sleeves 84 are provided on the sliding sleeve 83, which are distributed circumferentially along the sliding sleeve 83 and have a horizontal axis. The roller sleeves 84 are rotatably arranged around their own axis. The outer circumferential edge of the roller sleeve 84 intersects the plane containing the inner circumferential wall of the sliding sleeve 83.

[0064] More specifically, the bottom end of the pumping pipe 8 is fixedly connected to a pumping shell 81. The bottom surface of the pumping shell 81 is densely covered with through holes 811. A float 82 is fixedly sleeved on the outside of the pumping shell 81. The bottom surface of the float 82 is flush with the bottom surface of the pumping shell 81, so that when the float 82 floats, the bottom surface of the pumping shell 81 can be submerged below the liquid surface of the water storage tank 5, so as to ensure that the fire pump 6 can smoothly draw water from the water storage tank 5.

[0065] Sliding sleeves 83 are fixedly connected to both sides of the top surface of the pump casing 81 by brackets. The sliding sleeves 83 are square sleeves. Four rollers 84 are provided on the top and bottom surfaces of the sliding sleeves 83. The axis of the four rollers 84 corresponds to and is parallel to the four sides of the sliding sleeves 83. Guide posts 52 extending vertically and corresponding to the two sliding sleeves 83 are also fixed inside the water storage tank 5. The two ends of the guide posts 52 are fixedly connected to the bottom surface of the tank cover 54 and the inner bottom wall of the tank body 53, respectively. The guide posts 52 pass through the inner side of the sliding sleeves 83 and are clearance-fitted with the outer edge of part of the rollers 84. With the above design, the roller sleeve 84 rotates while contacting the outer surface of the guide post 52 and rolling along the axial direction of the guide post 52. This avoids the inner wall of the sliding sleeve 83 from contacting the guide post 52 and reduces the friction when the sliding sleeve 83 changes its height. This allows the water pump 6 to move along the axial direction of the guide post 52 after the water level in the water storage tank 5 changes due to water pumping or water replenishment pump 4 filling the tank, thus reducing the frictional resistance and keeping the bottom surface of the water pump 81 submerged below the water level in the water storage tank 5, ensuring that the fire pump 6 can pump water smoothly.

[0066] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automatic control device for replenishing water in a fire-fighting water tank, characterized in that, include: A water pump with its inlet located in the river and detachably connected to a filter; The disinfection pool has an ultraviolet lamp that can be detachably connected to the top and extends downward into the disinfection pool. The inner cavity is connected to the output end of the water pump and is equipped with a microbial detection sensor. A water replenishment pump, the input end of which is connected to the inner cavity of the disinfection tank; The water storage tank is enclosed and installed underground, and is equipped with a first liquid level sensor to detect the water level. The fire pump's input end is connected to the water storage tank; The control component is electrically connected to the water pump, ultraviolet lamp, microbial detection sensor, water replenishment pump, first liquid level sensor and fire pump.

2. The automatic control device for replenishing fire water tanks according to claim 1, characterized in that: The filter includes a filter cylinder that is threadedly connected to the input end of the water pump. The side wall of the filter cylinder is densely covered with filter holes, and the end of the filter cylinder away from the water pump is closed.

3. The automatic control device for replenishing fire water tanks according to claim 2, characterized in that: The filter also includes a filter cloth disposed between the inner wall of the filter cylinder and the outer wall of the water pump inlet.

4. The automatic control device for replenishing fire water tanks according to claim 3, characterized in that: The centerline of the filter cylinder is parallel to the direction of the river flow.

5. The automatic control device for replenishing fire water tanks according to claim 1, characterized in that: The water pump is connected to a lifting assembly, and the output end of the water pump is connected to the inner cavity of the disinfection tank through a corrugated hose.

6. The automatic control device for replenishing fire water tanks according to claim 1, characterized in that: The ultraviolet lamp is inserted vertically into the disinfection pool and is connected to a locking unit that secures it to the disinfection pool.

7. The automatic control device for replenishing fire water tanks according to claim 6, characterized in that: The locking unit includes a locking screw fixed to the disinfection pool with its axis pointing upwards and a locking strip threadedly connected to the locking screw. The movement path of the locking strip includes a first station and a second station. At the first station, the projections of the locking strip and the ultraviolet lamp on the horizontal plane intersect, while at the second station, the projections of the locking strip and the ultraviolet lamp on the horizontal plane are separated.

8. The automatic control device for replenishing fire water tanks according to any one of claims 1-7, characterized in that: The water storage tank is equipped with a downward-extending pumping pipe, which is a rubber hose. The top end of the pumping pipe is connected to the input end of the fire pump, and the bottom end is connected to a float. The float moves vertically within the water storage tank.

9. The automatic control device for replenishing fire water tanks according to claim 8, characterized in that: The bottom end of the pumping pipe is fixedly connected to a sliding sleeve, and a guide post extending vertically is provided inside the water storage tank. The sliding sleeve is sleeved on the outside of the guide post and has a clearance fit with the inner wall of the guide post.

10. The automatic control device for replenishing fire water tanks according to claim 9, characterized in that: The sliding sleeve is provided with roller sleeves distributed along the circumference of the sliding sleeve and with the center line horizontal. The roller sleeves are rotatably arranged around their own center line, and the outer edge of the roller sleeve intersects the plane containing the inner wall of the sliding sleeve.

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