Water circulation device and system for water area simulation rescue training facility

Abstract

The invention discloses a water circulation device and system for a water area simulation rescue training facility, and belongs to the technical field of water area rescue training. The water circulation device comprises a reservoir, a training water channel, a central island, a water circulation mechanism and a water supplementing unit; a make-up pump communicated with the interior of the reservoir is arranged on the top plate at the opening of the sump; the water circulation mechanism comprises a filter unit, a dosing unit, a drainage unit, a sewage treatment unit, a circulating pump set and a control valve set, an inlet of the filter unit is communicated with an outlet of the circulating pump set through the switching valve set, an outlet of the dosing unit and an outlet of the filter unit converge to the reservoir, and the drainage unit is communicated with the reservoir and the water collection pit. The outlet end of the sewage treatment unit is communicated with the drainage unit. The water circulation mechanism is controlled to form multiple mutual exclusion operation modes, circulating purification of training water and up-to-standard discharge of sewage are achieved, and the device has the advantages of being good in water quality guarantee, high in automation degree, environmentally friendly and capable of saving energy.

Description

Technical Field

[0001] This invention relates to the field of water rescue training technology, and in particular to a water circulation device and system for a water simulation rescue training facility. Background Technology

[0002] Water rescue training is crucial for improving the emergency response capabilities of firefighters in aquatic disaster environments. Professional water simulation training facilities can simulate real aquatic environments and various complex water flow conditions around the clock, unaffected by the natural environment. However, such training facilities typically consume large amounts of water, have high requirements for water quality maintenance, and generate wastewater containing silt, floating debris, and chemicals during training.

[0003] Existing water treatment systems are often complex in structure and operate in a single mode, making it difficult to simultaneously handle the recycling and purification of training water and the environmental treatment of wastewater. Furthermore, their level of automation is low, hindering the efficient switching and coordinated operation of multiple water treatment modes. Summary of the Invention

[0004] The purpose of this invention is to provide a water circulation device and system for a water simulation rescue training facility, which solves the problems mentioned in the background art.

[0005] The present invention is implemented as follows: a water circulation device for a water simulation rescue training facility includes a water storage tank, a training waterway, a central island, a water circulation mechanism, and a water replenishment unit. The two ends of the training waterway are connected to the water storage tank, and a water collection pit is provided at the end of the training waterway. The water circulation mechanism is connected to the water storage tank and the water collection pit respectively through pipelines. The opening of the water collection pit is provided with a top plate, and a water replenishment pump is provided on the top plate. The inlet end of the water replenishment pump is connected to the interior of the water storage tank, and the outlet end of the water replenishment pump is connected to the interior of the water collection pit. The water circulation mechanism includes a filtration unit, a dosing unit, a drainage unit, a sewage treatment unit, a circulation pump group, and a control valve group. The inlet of the filtration unit is selectively connected to the outlet of the circulating pump unit through a switching valve group. The outlet of the dosing unit and the outlet of the filtration unit converge into the water storage tank. The drainage unit is connected to the water storage tank and the sump pit respectively. The outlet of the sewage treatment unit is connected to the drainage unit. The water replenishment unit is connected to the water circulation mechanism through the control valve group; The water circulation device of the simulated water rescue training facility can form multiple mutually exclusive operating modes by controlling the working state of the water circulation mechanism. The multiple operating modes include at least water replenishment mode, water storage tank circulation mode, water collection pit circulation mode, filtration mode, backwashing mode, drainage mode and chemical dosing mode.

[0006] A further technical solution of the present invention is: the circulating pump group includes at least a first circulating pump and a second circulating pump, the inlet of the first circulating pump is connected to the water storage tank, and the inlet of the second circulating pump is connected to the water collection pit.

[0007] A further technical solution of the present invention is: the filtration unit includes a number of high-speed filters arranged in parallel, and each high-speed filter corresponds to a switching valve for switching the circulating water flow; The filtration unit also includes a plate and frame diatomaceous earth filter connected in parallel with the high-speed filter.

[0008] A further technical solution of the present invention is: the sewage treatment unit includes a sewage tank and a sewage processor, the inlet end of the sewage processor is connected to the interior of the sewage tank, and the outlet end of the sewage processor is connected to the drainage unit.

[0009] A further technical solution of the present invention is that the dosing unit includes several dosing pumps arranged in parallel.

[0010] A further technical solution of the present invention is: the drainage unit includes a first drainage pump connected to the bottom of the water storage tank and a second drainage pump connected to the bottom of the water collection pit, and a sewage discharge trough is provided at the bottom of the water storage tank and / or the water collection pit, and the sewage discharge trough is connected to the corresponding first drainage pump and / or second drainage pump.

[0011] A further technical solution of the present invention is: it also includes a PLC automatic control module, which is electrically connected to the circulating pump group, the dosing unit, the sewage treatment unit, the drainage unit, the water replenishment pump and the control valve group.

[0012] A water circulation system for a simulated water rescue training facility includes: a water circulation device for the simulated water rescue training facility and a training facility body adapted thereto, wherein the training facility body includes several training areas with different water flow characteristics arranged around the central island.

[0013] A further technical solution of the present invention is that the training area includes: a boiling line escape training area, a white water training area, a tumbling flow escape training area, an inverted V flow training area, a vortex flow training area, a frowning flow training area, and a covering flow training area arranged sequentially around the central island in a clockwise direction.

[0014] A further technical solution of the present invention is that the training facility body also includes safety monitoring and auxiliary facilities installed in the training waterway and / or reservoir, wherein the safety monitoring and auxiliary facilities include at least one or more of the following: escalator, depth gauge, underwater lighting, and underwater camera.

[0015] The beneficial effects of this invention are: 1. In this invention, the filtration unit adopts a structure in which a high-speed filter and a plate and frame diatomaceous earth filter are connected in parallel. The filtration path can be flexibly switched according to the water quality, effectively removing suspended solids, algae and microorganisms in the training water. At the same time, the dosing unit is equipped with multiple parallel dosing pumps, which can add algaecides, disinfectants, flocculants and pH adjusters respectively, so as to achieve precise control of water quality.

[0016] 2. This invention, through the combined use of a drainage unit and a sewage treatment unit, can effectively achieve environmentally friendly treatment and compliant discharge of sewage. The sewage discharge troughs at the bottom of the water storage tank and the collection pit are directly connected to the corresponding drainage pumps, which can thoroughly remove bottom sediments; the sewage discharged from the drainage unit enters the sewage tank, is treated by the sewage treatment unit to meet the standards, and is then discharged externally, effectively preventing training wastewater from polluting the surrounding environment.

[0017] 3. In this invention, the training facility body is surrounded by a central island and has multiple training areas with different water flow characteristics, such as boiling line escape, white water training, tumbling flow escape, inverted V flow, vortex flow, frowning flow, and covering flow. This can simulate the complex water flow conditions in real aquatic environments, meet diverse professional rescue training needs, and enhance the comprehensive use value of the training facility. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a connection diagram of the water circulation mechanism in this invention; Figure 3 This is a partially enlarged schematic diagram of point A in the present invention; Figure 4 This is a partially enlarged schematic diagram of section B of the present invention.

[0019] Reference numerals: 1. Reservoir; 2. Training waterway; 3. Central island; 4. Water circulation mechanism; 41. Circulation pump group; 411. First circulation pump; 412. Second circulation pump; 42. Filtration unit; 421. High-speed filter; 422. Plate and frame diatomaceous earth filter; 43. Dosing unit; 431. Dosing pump; 44. Drainage unit; 441. First drainage pump; 442. Second drainage pump; 443. Sewage trough; 45. Wastewater treatment unit; 451. Wastewater tank; 452. Wastewater processor; 46. Switching valve group ; 461. Switching valve; 47. Water replenishment unit; 48. Control valve assembly; 5. Sump; 6. Top plate; 7. Water replenishment pump; 8. Training facility body; 9. Training area; 91. Boiling line escape training area; 92. White water training area; 93. Tumbling flow escape training area; 94. Inverted V flow training area; 95. Vortex flow training area; 96. Frowning flow training area; 97. Covering flow training area; 10. Safety monitoring and auxiliary facilities; 101. Ladder; 102. Depth gauge; 103. Underwater lighting; 104. Underwater camera. Detailed Implementation

[0020] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0021] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention. Example 1

[0022] like Figures 1 to 4 As shown, the water circulation device of the water simulation rescue training facility in this embodiment includes a water storage tank 1, a training waterway 2, a central island 3, a water circulation mechanism 4, and a water replenishment unit 47.

[0023] The training waterway 2 is arranged around the central island 3, and both ends of it are connected to the reservoir 1 to form a closed circulating waterway. At the end of the training waterway 2 (i.e., the downstream end of the water flow), there is a water collection pit 5 to collect the water flowing out of the training waterway 2.

[0024] like Figure 2 As shown, to facilitate water replenishment of the training waterway 2, a top plate 6 is provided at the opening of the collection pit 5. The top plate 6 has pre-drilled holes, and a water replenishment pump 7 is installed on it. The inlet end of the water replenishment pump 7 is connected to the interior of the storage tank 1 via a pipe, and the outlet end is connected to the interior of the collection pit 5. When the water level in the training waterway 2 drops to a certain height, the water replenishment pump 7 replenishes water from the storage tank 1 to the collection pit 5 to regulate the water levels in both tanks or to activate the collection pit's circulation mode.

[0025] Preferably, both the bottom of the water collection pit 5 and the water storage tank 1 are provided with a sewage discharge trough 443 for the collection and discharge of sediments.

[0026] like Figure 2 As shown, the water circulation mechanism 4 is the core processing part of the device, which is connected to the water storage tank 1 and the water collection pit 5 through pipelines. The water circulation mechanism 4 includes: a circulation pump group 41, a filtration unit 42, a dosing unit 43, a drainage unit 44, a sewage treatment unit 45, a switching valve group 46, a water replenishment unit 47, and a control valve group 48.

[0027] Specifically, the circulating pump assembly 41 includes at least a first circulating pump 411 (i.e., pump one) and a second circulating pump 412 (i.e., pump two). In this embodiment, the circulating pump assembly 41 includes seven pumps, namely pump one to pump seven.

[0028] The inlet of the first circulation pump 411 is connected to the water storage tank 1 and is used to drive the water circulation in the water storage tank 1; the inlet of the second circulation pump 412 is connected to the water collection pit 5 and is used to drive the water circulation in the water collection pit 5.

[0029] Specifically, the filtration unit 42 includes several high-speed filters 421 arranged in parallel (eight in this embodiment), and a plate and frame diatomaceous earth filter 422 connected in parallel with the high-speed filters 421. Each high-speed filter 421 has a corresponding switching valve 461 at its inlet end, forming part of the switching valve group 46, which is used to control whether water flows into the filter.

[0030] Specifically, the dosing unit 43 includes several dosing pumps 431 connected in parallel. In this embodiment, it is configured as four pumps connected in parallel: pump eight, pump nine, pump ten, and pump eleven. These are used to add algaecides, disinfectants, flocculants, and pH adjusters.

[0031] Specifically, the drainage unit 44 includes a first drainage pump 441 (i.e., pump five) connected to the bottom of the reservoir 1, and a second drainage pump 442 (i.e., pump six) connected to the bottom of the sump 5. The sludge discharge trough 443 provided at the bottom of the reservoir 1 and the sump 5 is directly connected to the corresponding first drainage pump 441 and second drainage pump 442, which facilitates the removal of sediment.

[0032] The drainage unit 44 also includes pumps three and four connected to the outlet end of the circulating pump group 41, wherein pumps three and five are connected through a drainage pipe; pump four is connected to pump six through a drainage pipe, so as to discharge sewage from the water storage tank 1 and the sump 5.

[0033] Specifically, the wastewater treatment unit 45 includes a wastewater tank 451 and a wastewater processor 452. Meanwhile, the wastewater tank 451 is equipped with pump seven from the circulating pump set 41, which serves as the inlet pump for the wastewater processor 452.

[0034] Furthermore, the outlet of the drainage unit 44 is connected to the sewage tank 451 or directly discharged to the outside. The inlet of the sewage treatment unit 452 is connected to the interior of the sewage tank 451 via a pump, while the outlet of the sewage treatment unit 452 is connected to the external drainage system.

[0035] It should be noted that the function of the sewage treatment unit 45 is to discharge the sewage deposited at the bottom of the storage tank 1 and the collection pit 5 through the drainage unit 44 and then treat it to meet environmental standards before discharging it, rather than reusing the treated water for the recycling system. If the sewage at the bottom of the storage tank 1 and the collection pit 5 meets the discharge standards after testing (a water quality tester can be installed at the bottom of the storage tank 1 and the collection pit 5 and electrically connected to the PLC automatic control module), it can be discharged directly.

[0036] Specifically, the control valve group 48 includes multiple valves installed on each pipeline, which in this embodiment are specifically 10 valves from valve one to valve ten, used to control the on / off state of each pipeline.

[0037] Among them, valve nine is installed on the municipal water supply pipeline and is used to control water replenishment; valve ten is used to control the main drainage pipeline; valve one, valve two, and valve three are used to control the circulation path; valve four is used to control the connection of the plate and frame diatomaceous earth filter 422; valve five, valve six, and valve eight are used to control the inlet and outlet water of the sewage treatment unit 45; and valve seven is used to control the drainage pipeline of the sump.

[0038] Specifically, the switching valve group 46 is mainly used to control the inlet selection of the filter unit 42, which is achieved by valve one, valve two, valve three, valve four and so on.

[0039] Specifically, the water replenishment unit 47 is connected to the water circulation mechanism 4 through valve nine, and its inlet end is connected to the municipal water source. The municipal water supply pipeline adopts DN150. The main circulation pipeline, drainage pipeline and return water pipeline adopt DN150 and DN200, and the main drainage pipe also adopts DN150 and DN200.

[0040] In addition, the device also includes a PLC automatic control module (not shown in the figure). The PLC automatic control module is electrically connected to the circulating pump group 41, the dosing unit 43, the sewage treatment unit 45, the drainage unit 44, the water replenishment pump 7, and the control valve group 48 to realize automatic control. Example 2

[0041] This embodiment provides a water circulation system for a water area simulation rescue training facility, including the water circulation device described in Embodiment 1 and a training facility body 8 adapted thereto.

[0042] The training facility itself 8 includes several training areas 9 with different water flow characteristics, arranged around the central island 3. As a preferred arrangement, the training areas 9 surround the central island 3 and are arranged sequentially in a clockwise direction: boiling line escape training area 91, white water training area 92, safety rope and water crossing training area (not separately numbered in the diagram, but can be considered part of the training area), tumbling current escape training area 93, inverted V-flow training area 94, vortex current training area 95, frowning current training area 96, and covering current training area 97. These areas can simulate various complex water flows, meeting the needs of professional water rescue training.

[0043] The training facility body 8 also includes safety monitoring and auxiliary facilities 10 installed in the training waterway 2 and / or reservoir 1, specifically including: 20 sets of water access ladders 101; 20 sets of water depth gauges 102; 6 sets of underwater lighting 103; and 6 sets of underwater cameras 104.

[0044] The reservoir 1 serves as both an underwater confined space training area and a swimming skills and underwater rope-tying training area, and is surrounded by guardrails. The training waterway 2 is surrounded by a 1200mm wide drainage channel. Example 3

[0045] This embodiment details 12 specific operating modes of the water circulation device.

[0046] The PLC automatic control module controls the state combinations of each valve in the circulating pump group 41, the dosing unit 43, the drainage unit 44, the sewage treatment unit 45, the water replenishment unit 47, and the control valve group 48 to achieve the following mutually exclusive mode switching: Water replenishment mode (municipal water supply mode): Open valve nine, close valve ten, and close all other valves. At this time, municipal water is supplied to the system via a DN150 pipeline through valve nine, filling water into reservoir 1 and / or sump 5. In this mode, drainage mode is interlocked and prohibited from starting to prevent water resource waste.

[0047] Water storage tank circulation mode: Start pump one (first circulation pump 411), turn off pump two. Open valve one and valve three, close valve two, open switching valve group 46, and close the remaining valves. At this time, the water flow path is: water storage tank 1 → pump one → valve one → valve three → switching valve → filter unit 42 → return to water storage tank 1. This mode is used for independent circulation and purification of the water in water storage tank 1.

[0048] Water sump circulation mode: Start pump two (second circulation pump 412), and shut down pump one. Open valve one and valve three, close valve two, open switching valve group 46, and close the remaining valves. At this time, the water flow path is: water sump 5 → pump two → valve one → valve three → switching valve group 46 → filter unit 42 → return to water sump 5 (or return to the storage tank through the makeup water pump and pipeline to achieve water exchange). This mode is used for independent circulation and purification of the water in water sump 5.

[0049] Operating mode of the plate and frame diatomaceous earth filter: Close valve one, open valve four, open switching valve group 46, and close the remaining valves. This mode is usually used in conjunction with the circulation mode. Water flows through valve four into the plate and frame diatomaceous earth filter 422 for fine filtration, suitable for applications requiring higher water quality.

[0050] Integrated wastewater treatment unit operation mode: Start pump seven, open valve five, close valves six and eight, and close the remaining valves. At this time, the wastewater in wastewater tank 451 is lifted by pump seven and enters wastewater treatment unit 452 through valve five. After treatment to meet standards, it is discharged externally. This mode is used to treat wastewater discharged into the wastewater tank by the drainage unit.

[0051] Water storage tank drainage mode: Start pumps three and five, open valves six and ten, close valves five, eight, and nine, and close the remaining valves. At this time, the sediment at the bottom of water storage tank 1 is pumped out by pumps three and five through the sewage discharge channel 443 with the water flow, and is transported to sewage tank 451 through valves six and ten or directly discharged.

[0052] Sump drainage mode: Start pumps four and six, open valve seven, and close the other valves. At this time, the sediment at the bottom of sump 5 is pumped out by pumps four and six through the sewage discharge channel 443 with the water flow, and is transported to sewage tank 451 through valve seven or discharged directly.

[0053] High-speed filter backwashing mode: Start pump one, open valve eight, close valves five and six, and close the remaining valves. Simultaneously, manually switch all eight high-speed filters 421 to backwashing mode (or control this automatically). Circulating water supplied by pump one flows through valve eight to the high-speed filter 421 requiring backwashing, performing a reverse flush. The flushing wastewater is discharged into the wastewater tank 451. During backwashing, the other filters can continue operating normally, ensuring uninterrupted training.

[0054] Dosing mode (four separate controls): Dosing Mode 1 (Pump 8): Start Pump 8, simultaneously start Pump 1, and shut down Pump 2. Open Valve 1 and Valve 3, close Valve 2, open DN65 manual valve, and close the remaining valves.

[0055] Dosing Mode 2 (Pump 9): Start Pump 9, simultaneously start Pump 1, and shut down Pump 2. Open Valve 1 and Valve 3, close Valve 2, open DN65 manual valve, and close the remaining valves.

[0056] Dosing Mode 3 (Pump 10): Start Pump 10, simultaneously start Pump 1, and shut down Pump 2. Open Valve 1 and Valve 3, close Valve 2, open DN65 manual valve, and close the remaining valves.

[0057] Dosing Mode 4 (Pump 11): Start Pump 11, simultaneously start Pump 1, and shut down Pump 2. Open Valve 1 and Valve 3, close Valve 2, open DN65 manual valve, and close the remaining valves.

[0058] It should be noted that the four dosing pumps 431 (pumps eight to eleven) are used to add different types of chemicals (such as algaecides, disinfectants, flocculants, and pH adjusters). During dosing, the main circulation pump (pump one) starts simultaneously, so that the chemicals are evenly distributed throughout the water area by the circulating water flow.

[0059] The above modes are mutually exclusive through the PLC automatic control module, meaning that only one main mode can run at a time, ensuring the determinism and safety of system operation. Example 4

[0060] In this embodiment, the PLC automatic control module is mainly used for centralized control of various pumps and valves. Specifically, the system supports one-click switching; the operator only needs to select the desired mode on the control interface, and the PLC automatic control module will automatically complete the combined start and stop of the corresponding pumps and valves.

[0061] In terms of safety protection, both the water storage tank 1 and the sump 5 are equipped with level sensors. When the water level is too low, the corresponding circulation pump will be locked to prevent the pump from running dry and being damaged. When the water level is too high, the water replenishment mode will be disabled to prevent overflow. At the same time, the inlet and outlet of the high-speed filter 421 of the filter unit 42 are equipped with differential pressure detection. When the differential pressure exceeds 0.15MPa, the system will issue an alarm signal to remind the operator to perform backwashing in time.

[0062] In addition, the PLC has pre-set interlocking logic to ensure that incompatible operating modes such as water replenishment mode and drainage mode will not start simultaneously—for example, valve nine and valve ten are programmed to be mutually exclusive. The equipment linkage within each mode is also uniformly coordinated by the PLC. In the dosing mode, the dosing pump 431 starts and stops synchronously with the main circulation pump, and in the drainage mode, the drainage pump and the sewage treatment unit 452 operate synchronously. The entire control process basically requires no manual intervention. Example 5

[0063] The sewage trough 443 and the drainage pump are designed with direct connection to the pipeline, which can quickly discharge the mud and debris deposited at the bottom of the water storage tank 1 and the water collection pit 5, and avoid long-term accumulation that will affect the water quality.

[0064] In actual operation, drainage operations can be scheduled once a week according to water quality conditions. The bottom water in the storage tank or sump, along with sediment, is discharged into the sewage tank 451, and then treated by the sewage treatment unit 452 to meet the standards before being discharged. Since the system adopts a water recycling mode, under normal circumstances only a small amount of water evaporated and lost needs to be added. With the regular bottom water discharge control, the annual water saving rate of the entire system can be stably maintained at over 70%.

[0065] In summary, this water circulation device, through the integrated design of its various functional units and multi-mode automatic control, can reduce water consumption and sewage discharge while ensuring training water quality. It has a high degree of automation, is easy to operate and maintain, and is suitable for use in conjunction with various professional water rescue training facilities.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water circulation device for a simulated water rescue training facility, characterized in that: It includes a water storage tank (1), a training waterway (2), a central island (3), a water circulation mechanism (4), and a water replenishment unit (47). The two ends of the training waterway (2) are connected to the water storage tank (1), and a water collection pit (5) is provided at the end of the training waterway (2). The water circulation mechanism (4) is connected to the water storage tank (1) and the water collection pit (5) through pipelines. The opening of the water collection pit (5) is provided with a top plate (6), and a water replenishment pump (7) is provided on the top plate (6). The inlet end of the water replenishment pump (7) is connected to the interior of the water storage tank (1), and the outlet end of the water replenishment pump (7) is connected to the interior of the water collection pit (5). The water circulation mechanism (4) includes a filtration unit (42), a dosing unit (43), a drainage unit (44), a sewage treatment unit (45), a circulation pump group (41), and a control valve group (48). The inlet of the filter unit (42) is selectively connected to the outlet of the circulating pump group (41) through the switching valve group (46). The outlet of the dosing unit (43) and the outlet of the filter unit (42) converge to the water storage tank (1). The drainage unit (44) is connected to the water storage tank (1) and the water collection pit (5) respectively. The outlet of the sewage treatment unit (45) is connected to the drainage unit (44). The water replenishment unit (47) is connected to the water circulation mechanism (4) through the control valve group (48). The water circulation device of the water simulation rescue training facility forms a variety of mutually exclusive operating modes by controlling the working state of the water circulation mechanism (4). The various operating modes include at least the water replenishment mode, the water storage tank circulation mode, the water collection pit circulation mode, the filtration mode, the backwashing mode, the drainage mode, and the chemical dosing mode.

2. The water circulation device for a simulated water rescue training facility according to claim 1, characterized in that, The circulating pump group (41) includes at least a first circulating pump (411) and a second circulating pump (412). The inlet of the first circulating pump (411) is connected to the water storage tank (1), and the inlet of the second circulating pump (412) is connected to the water collection pit (5).

3. The water circulation device for a simulated water rescue training facility according to claim 1, characterized in that, The filtration unit (42) includes several high-speed filters (421) arranged in parallel, and each high-speed filter (421) corresponds to a switching valve (461) for switching the circulating water flow. The filtration unit (42) also includes a plate and frame diatomaceous earth filter (422) connected in parallel with the high-speed filter (421).

4. The water circulation device for a simulated water rescue training facility according to claim 1, characterized in that, The wastewater treatment unit (45) includes a wastewater tank (451) and a wastewater processor (452). The inlet end of the wastewater processor (452) is connected to the interior of the wastewater tank (451), and the outlet end of the wastewater processor (452) is connected to the drainage unit (44).

5. The water circulation device for a simulated water rescue training facility according to claim 1, characterized in that, The dosing unit (43) includes several dosing pumps (431) connected in parallel.

6. The water circulation device for a simulated water rescue training facility according to claim 1, characterized in that, The drainage unit (44) includes a first drainage pump (441) connected to the bottom of the water storage tank (1) and a second drainage pump (442) connected to the bottom of the water collection pit (5). A sewage trough (443) is provided at the bottom of the water storage tank (1) and / or the water collection pit (5). The sewage trough (443) is connected to the corresponding first drainage pump (441) and / or second drainage pump (442).

7. A water circulation device for a simulated water rescue training facility according to any one of claims 1 to 6, characterized in that, It also includes a PLC automatic control module, which is electrically connected to the circulating pump group (41), the dosing unit (43), the sewage treatment unit (45), the drainage unit (44), the water replenishment pump (7), and the control valve group (48).

8. A water circulation system for a water-simulated rescue training facility, characterized in that, include: The water circulation device of the water simulation rescue training facility as described in claim 1 and the training facility body (8) adapted thereto, the training facility body (8) includes a plurality of training areas (9) with different water flow characteristics arranged around the central island (3).

9. The water circulation system of a water simulation rescue training facility according to claim 8, characterized in that, The training area (9) includes: a boiling line escape training area (91), a white water training area (92), a tumbling flow escape training area (93), an inverted V flow training area (94), a vortex flow training area (95), a frowning flow training area (96), and a covering flow training area (97) arranged in a clockwise direction around the central island (3).

10. The water circulation system of a water simulation rescue training facility according to claim 8, characterized in that, The training facility body (8) also includes safety monitoring and auxiliary facilities (10) installed in the training waterway (2) and / or reservoir (1), the safety monitoring and auxiliary facilities (10) including at least one or more of the following: ladder (101), water depth gauge (102), underwater lighting (103), and underwater camera (104).

Images