CN218955572U - Cooling tower water circulation system - Google Patents

Abstract

The embodiment of the disclosure discloses a cooling tower water circulation system, relates to the technical field of water treatment, and aims to solve the problem of water resource waste. The cooling tower water circulation system comprises a cooling tower, a filtering device, a water reservoir and a high-pressure water gun, wherein the cooling tower comprises a first inlet and a first outlet; the reservoir comprises a second inlet and a second outlet; the first outlet is communicated with the inlet of the filtering device through a pipeline; the outlet of the filtering device is communicated with the second inlet through a pipeline; the second outlet is communicated with the inlet of the high-pressure water gun through a pipeline; the outlet of the high-pressure water gun is communicated with the first inlet through a pipeline. Through setting up filter equipment and filtering the exhaust water in with the cooling tower, with silt and the scale deposit thing filtering back in the aquatic, obtain comparatively clean water resource, collect through the cistern, the high-pressure squirt utilizes the water after filtering to carry out the washing work of cooling tower, and circulation is until the cooling tower washs cleanly many times, with water resource make full use of, has improved the waste of water resource.

Description

Cooling tower water circulation system

Technical Field

The utility model relates to the technical field of water treatment, in particular to a cooling tower water circulation system.

Background

The cooling tower cooling system is used as one of important links of the operation of the water-cooling air conditioning system, the refrigeration of a machine room mainly depends on chilled water, and the heat exchange of the chilled water depends on cooling water, so that the operation efficiency of the cooling tower cooling system is a critical factor for the operation stability of the air conditioning system.

In the prior art, the phenomenon of water resource waste of the cooling tower exists.

Disclosure of Invention

The utility model provides a cooling tower water circulation system, which is used for cleaning a cooling tower after discharged water in the cooling tower is filtered by a filtering device, so that the phenomenon of water resource waste is improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a cooling tower water circulation system comprising a cooling tower, a filtering device, a reservoir and a high-pressure water gun, wherein the cooling tower comprises a first inlet and a first outlet; the reservoir includes a second inlet and a second outlet. The first outlet is communicated with the inlet of the filtering device through a pipeline; the outlet of the filtering device is communicated with the second inlet through a pipeline; the second outlet is communicated with the inlet of the high-pressure water gun through a pipeline; the outlet of the high-pressure water gun is communicated with the first inlet through a pipeline.

It can be understood that setting up filter equipment and filtering the water that discharges in the cooling tower, filtering silt and scale deposit thing back in with water, obtaining comparatively clean water resource, collecting through the cistern, the high-pressure squirt utilizes the water after filtering to carry out the washing work of cooling tower, and circulation many times is until the cooling tower washes totally, with water resource make full use of, has improved the phenomenon of water resource waste.

Optionally, the cooling tower water circulation system further comprises a first valve, wherein the first valve is located on a pipeline between the first outlet and the inlet of the filtering device and is used for controlling the conduction or the cutoff of the pipeline between the first outlet and the inlet of the filtering device.

Optionally, the cooling tower water circulation system further comprises a decontamination device, a first water pump and a water softening device; the cooling tower further includes a third inlet and a third outlet; the decontamination device includes a fourth inlet and a fourth outlet; the third outlet is communicated with the fourth inlet through a pipeline; the fourth outlet is communicated with the inlet of the first water pump through a pipeline; the outlet of the first water pump is communicated with the inlet of the water softening device through a pipeline; the outlet of the water softening device is communicated with the third inlet through a pipeline.

Optionally, the cooling tower water circulation system further comprises a second valve, wherein the second valve is positioned on a pipeline between the third outlet and the fourth inlet and is used for controlling the conduction or the cutoff of the pipeline between the third outlet and the fourth inlet.

Optionally, the cooling tower water circulation system further comprises a second water pump; the reservoir further comprises a fifth outlet; the decontamination device further includes a fifth inlet; the fifth outlet is communicated with the inlet of the second water pump through a pipeline; the outlet of the second water pump is communicated with the fifth inlet through a pipeline.

Optionally, the filtering device comprises a housing and a plurality of layers of first filter screens; the housing includes opposed first and second surfaces, the inlet of the filter device being located at the first surface and the outlet of the filter device being located at the second surface; the multiple layers of first filter screens are sequentially arranged in a detection mode along a first direction; the first direction is perpendicular to the first surface; in the adjacent two layers of the first filter screens, the aperture of the first filter screen far away from the first surface is smaller than that of the first filter screen close to the first surface; the filter device further comprises a second filter screen connected to the bottoms of the first filter screens; the second filter screen gradually approaches the bottom surface of the shell along the direction from the first surface to the second surface.

Optionally, the inlet of the filter device is located outside the orthographic projection of the edge of the second filter screen onto the first surface.

Optionally, a roller is arranged at the bottom of the filtering device.

Optionally, a handle is provided on top of the filter device.

Optionally, the reservoir includes a first fixing device, a second fixing device and a plurality of waterproof plates, the first fixing device fixes the waterproof plates extending in the same direction, and the second fixing device fixes the waterproof plates extending in different directions.

Drawings

FIG. 1 is a schematic diagram of a cooling tower water circulation system provided in some embodiments of the present utility model;

FIG. 2 is a schematic diagram of a cooling tower water circulation system according to further embodiments of the present utility model;

FIG. 3 is a schematic diagram of a filtering device according to some embodiments of the present utility model;

FIG. 4 is a schematic diagram of a water reservoir according to some embodiments of the present utility model;

FIG. 5 is a schematic structural view of a first fixing device according to some embodiments of the present utility model;

FIG. 6 is a schematic structural view of a second fixing device according to some embodiments of the present utility model;

fig. 7 is a schematic diagram illustrating a step of disassembling a reservoir according to some embodiments of the present utility model.

Reference numerals: 1000. a cooling tower water circulation system; 100. a cooling tower; 110. a first inlet; 120. a first outlet; 130. a third inlet; 140. a third outlet; 200. a filtering device; 210. a first filter screen; 220. a second filter screen; 230. a housing; 240. a first surface; 250. a second surface; 260. a roller; 270. a handle; 300. a reservoir; 310. a second inlet; 320. a second outlet; 330. a fifth outlet; 340. a waterproof board; 341. a first waterproof board; 342. a second waterproof board; 343. a third waterproof board; 344. a fourth waterproof board; 345. a fifth waterproof board; 346. a sixth waterproof board; 350. a first fixing device; 351. a first mounting groove; 360. a second fixing device; 361. a second mounting groove; 400. high-pressure water gun; 001. a first valve; 500. a decontamination device; 510. a fourth inlet; 520. a fourth outlet; 530. a fifth inlet; 600. a first water pump; 700. a water softening device; 002. a second valve; 800. and a second water pump.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The cooling tower water circulation system provided according to the present utility model will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a cooling tower water circulation system according to some embodiments of the present utility model.

As shown in fig. 1, an embodiment of the present utility model provides a cooling tower water circulation system 1000, the cooling tower water circulation system 1000 including a cooling tower 100. Since the cooling tower 100 is operated for a long period of time, a large amount of dust in the air enters the cooling tower 100 to form sludge, which affects the operation of the cooling system of the cooling tower 100, so that the cooling tower 100 needs to be cleaned in time. Because the process of cleaning the cooling tower 100 requires draining water, most data centers or other enterprises using the cooling tower 100 generally directly drain water in the cooling tower 100 in the existing working modes, and water resources are not fully utilized, so that water resources are wasted.

Based on this, the cooling tower water circulation system 1000 of the present disclosure further includes a filtering device 200, a water reservoir 300, and a high pressure water gun 400. The cooling tower 100 includes a first inlet 110 and a first outlet 120. Reservoir 300 includes a second inlet 310 and a second outlet 320. The first outlet 120 is communicated with the inlet of the filter device 200 through a pipeline, the outlet of the filter device 200 is communicated with the second inlet 310 through a pipeline, the second outlet 320 is communicated with the inlet of the high-pressure water gun 400 through a pipeline, and the outlet of the high-pressure water gun 400 is communicated with the first inlet 110 through a pipeline. Through setting up filter equipment 200 and filtering the water that discharges in the cooling tower 100, with silt and the scale deposit thing filtering back in the aquatic, obtain comparatively clean water resource, collect through cistern 300, the high-pressure squirt 400 utilizes the water after filtering to carry out the washing work of cooling tower 100, and circulation many times is until cooling tower 100 washes cleanly, so, can make full use of water resource, has improved the phenomenon of water resource waste.

It will be appreciated that the open cooling tower 100 operates for a long period of time, and a large amount of dust in the air enters the cooling tower 100 to form sludge, and the sludge is accumulated at the bottom of the cooling tower 100 under the action of gravity, so that the first outlet 120 may be disposed at the bottom of the cooling tower 100, which is more beneficial for the cooling water to be discharged out of the sludge at the bottom of the cooling tower 100.

It will be appreciated that when the cooling tower 100 is cleaned, the cooling water in the cooling tower 100 needs to be discharged, and the direct discharge of the cooling water wastes water resources. The cooling water may flow through the first outlet 120 to the filtering device 200 for filtering, and the filtering device 200 may remove sludge and scale in the cooling water, thereby obtaining cleaner water resources. The filtered cooling water flows into the water reservoir 300 to be stored. After the cooling water in the cooling tower 100 is completely discharged, the high-pressure water gun 400 can wash the cooling tower 100 by using the filtered cooling water, and the cooling water discharged in the washing process is stored in the water reservoir 300 after passing through the filtering device 200 again, so that a circulation is formed until sludge and dirt in the cooling tower 100 are washed clean. The reuse of the cooling water resource discharged from the cooling tower 100 is facilitated, and the waste of the water resource is avoided. As can be appreciated, the cooling water is directly discharged when the cooling tower 100 is cleaned, and the cooling tower 100 is flushed with municipal water, so that a large amount of water resources are consumed, the maintenance cost is high, and the cooling tower water circulation system 1000 in the present disclosure does not need to additionally use municipal water to clean the cooling tower 100 by recycling the cooling water, thereby being beneficial to reducing the maintenance cost of the cooling tower 100.

For example, since the cooling water has more suspended solids, the common filter medium is easy to be blocked, and the filter device 200 can adopt a multi-layer filter to trap the suspended solids layer by layer, thereby realizing the prolongation of the cleaning period and the improvement of the filtering efficiency.

Illustratively, the water reservoir 300 is used to store filtered cooling water. The water reservoir 300 may be an inflatable water reservoir 300. Reservoir 300 may also be a fixed, high capacity reservoir 300 if the site is large enough.

As can be appreciated, the high pressure water gun 400 facilitates flushing the cooling tower and increases the heat dissipation efficiency of the cooling tower 100.

In some examples, as shown in fig. 1, the cooling tower water circulation system 1000 further includes a first valve 001. A first valve 001 is located on the line between the first outlet 120 and the inlet of the filter device 200 for controlling the communication or interception of the line between the first outlet 120 and the inlet of the filter device 200.

It will be appreciated that the first valve 001 may be closed during normal operation of the cooling tower 100. When the cooling tower 100 needs to be cleaned or maintained, the first valve 001 can be opened, and the cooling water in the cooling tower 100 can be stored in the water reservoir 300 through the filtering device 200, so that the waste of cooling water resources can be avoided.

Fig. 2 is a schematic diagram of a cooling tower water circulation system provided in other embodiments of the present utility model.

In some examples, as shown in fig. 2, the cooling tower water circulation system 1000 further includes a decontamination device 500, a first water pump 600, and a demineralized water device 700. The cooling tower 100 also includes a third inlet 130 and a third outlet 140. The decontamination device 500 includes a fourth inlet 510 and a fourth outlet 520. The third outlet 140 is in communication with the fourth inlet 510 via a conduit. The fourth outlet 520 is in communication with the inlet of the first water pump 600 through a pipe. The outlet of the first water pump 600 communicates with the inlet of the water softening device 700 through a pipe. The outlet of the demineralized water apparatus 700 communicates with the third inlet 130 through a pipe.

It will be appreciated that the third outlet 140 may be disposed at the top of the cooling tower 100, the cooling water in the cooling tower 100 may flow from the third outlet 140 to the decontamination device 500 under the action of gravity, and the decontamination device 500 may be capable of deeply decontaminating the cooling water, for example, the decontamination device 500 may be porous plastic or microporous ceramic, and may be capable of filtering suspended substances such as sludge and dirt in the cooling water. Then, under the action of the first water pump 600, the cooling water flows to the water softening device 700, and the water softening device 700 can soften the cooling water, for example, the water softening device 700 can soften the cooling water through ion exchange or distillation, for example, the hardness of the cooling water can be reduced to below 1mg/1, so that the water quality of the cooling water is effectively improved, the operation standard of the cooling tower water circulation system 1000 is met, and then the cooling water flows to the third inlet 130 and returns to the cooling tower 100 for cooling operation. Therefore, the recycling of the cooling water can be improved, the zero emission of the cooling water is achieved, and the water and pollution discharge cost of enterprises is reduced.

In some examples, as shown in fig. 2, the cooling tower water circulation system 1000 further includes a second valve 002, the second valve 002 being located on a line between the third outlet 140 and the fourth inlet 510 for controlling the conduction or disconnection of the line between the third outlet 140 and the fourth inlet 510.

It will be appreciated that the second valve 002 is closed during normal operation of the cooling tower 100. When the hardness of the cooling water is too high, the heat exchange efficiency of the water system of the cooling tower 100 can be affected, at the moment, the second valve 002 is opened to perform decontamination and softening circulation of the cooling water, so that the zero emission of the cooling water is achieved while the heat exchange efficiency of the water system of the cooling tower 100 is ensured, and the recycling of the cooling water is facilitated.

In some examples, as shown in fig. 2, the cooling tower water circulation system 1000 further includes a second water pump 800. Reservoir 300 also includes a fifth outlet 330. The decontamination device 500 also includes a fifth inlet 530. The fifth outlet 330 is in communication with the inlet of the second water pump 800 via a conduit, and the outlet of the second water pump 800 is in communication with the fifth inlet 530 via a conduit.

It can be understood that the first valve 001 is opened to discharge the cooling water in the cooling tower 100, filtered by the filtering device 200 and stored in the water reservoir 300, and the high-pressure flushing gun performs a cleaning operation on the cooling tower 100 using the filtered cooling water. The cooling water discharged during the washing process is filtered again by the filtering device 200 and then stored in the water reservoir 300. After the cleaning work is completed, the cooling water stored in the water reservoir 300 is further transferred to the decontamination device 500 through the second water pump 800. After the cooling water is treated by the decontamination device 500, the cooling water is further conveyed into the water softening device 700 through the second water pump 800 for treatment, the water quality meeting the operation standard of the water system of the cooling tower 100 is finally obtained, and then flows back to the cooling tower 100 through the fifth inlet 530 to supplement water for the cooling tower 100, so that the effect of recycling the cooling water is achieved, the cooling water is enabled to be discharged zero, the water pollution is avoided, and the environment is protected.

Fig. 3 is a schematic structural diagram of a filtering device according to some embodiments of the present utility model.

In some examples, as shown in fig. 3, filter device 200 includes a housing 230 and a plurality of layers of first filter mesh 210. The housing 230 includes opposing first and second surfaces 240, 250, with the inlet of the filter device 200 being located at the first surface 240 and the outlet of the filter device 200 being located at the second surface 250. The multiple layers of first filter screens 210 are sequentially arranged at intervals along the first direction. The first direction is perpendicular to the first surface 240 (the first direction is the X direction in fig. 3), and in two adjacent layers of the first filter 210, the aperture of the first filter 210 far from the first surface 240 is smaller than the aperture of the first filter 210 near the first surface 240. The filtering apparatus 200 further includes a second filter 220 connected to the bottoms of the plurality of first filter 210. The second filter 220 gradually approaches the bottom surface of the housing 230 in a direction from the first surface 240 toward the second surface 250.

It will be appreciated that, along the direction from the first surface 240 to the second surface 250, the second filter 220 gradually approaches the bottom surface of the housing 230, but the second filter 220 is not in contact with the bottom surface of the housing 230, so that the cooling water filtered by the second filter 220 smoothly passes through the gap between the second filter 220 and the bottom surface of the housing 230.

It will be appreciated that the pore size of the filter pores of second filter 220 may be consistent with the pore size of first filter 210 furthest from first surface 240. Alternatively, the pore size of the filter pores of the second filter 220 may be smaller than that of the first filter 210. The smaller pore diameter of the filtering pores of the second filtering net 220 is beneficial to improving the filtering effect of the cooling water.

Illustratively, as shown in fig. 3, three first filter screens 210 may be provided for three stage classification filtering. Illustratively, four or five or the like may be provided for the first filter screen 210, and the number of the first filter screens 210 is not limited by the present disclosure.

It can be appreciated that the multiple layers of the first filter screen 210 can trap suspended matters such as sludge in the cooling water layer by layer, which is not easy to be blocked, and is beneficial to prolonging the cleaning period.

Illustratively, the second filter 220 has a certain inclination angle, which is beneficial to increasing the contact area between the cooling water and the second filter 220 and improving the filtering efficiency.

Illustratively, the multiple layers of the first filter screen 210 may also be disposed along the vertical direction in fig. 3 (such as the Y direction in fig. 3), and the aperture of the first filter screen 210 near the bottom of the casing 230 is larger than that of the first filter screen 210 far from the bottom of the casing 230, so that the step filtering of the cooling water may also be achieved.

In some examples, the inlet of filter device 200 is located outside of the orthographic projection of the edge of second filter screen 220 onto first surface 240. It will be appreciated that the inlet of the filter device 200 is located higher than the second filter screen 220 on the first surface 240 as shown in fig. 3, so that cooling water can enter the filter device 200 from above the second filter screen 220.

Illustratively, the inlet of the filter apparatus 200 may be disposed at the top of the first surface 240.

Illustratively, the top end of the housing 230 of the filter device 200 may have an opening, one end of a pipe may be connected to the first outlet 120 in the cooling tower 100, and the other end of the pipe may be inserted into the filter device 200 from the opening of fig. 3 so that the cooling water can be sufficiently contacted with the first and second filter screens 210 and 220.

In some examples, as shown in fig. 3, the bottom of the filter apparatus 200 is provided with rollers 260 to facilitate moving the filter apparatus 200 to different positions.

Illustratively, four rollers 260 may be provided at the bottom of the filter device 200 to facilitate smooth sliding of the filter device 200, the number of rollers 260 not being limited by the present disclosure.

In some examples, as shown in fig. 3, the top of the filter apparatus 200 is provided with a handle 270.

Illustratively, a handle 270 may be provided on top of each of the first surface 240 and the second surface 250, respectively, to facilitate handling of the filter assembly 200.

FIG. 4 is a schematic diagram of a water reservoir according to some embodiments of the present utility model; FIG. 5 is a schematic structural view of a first fixing device according to some embodiments of the present utility model; FIG. 6 is a schematic structural view of a second fixing device according to some embodiments of the present utility model; fig. 7 is a schematic diagram illustrating a step of disassembling a reservoir according to some embodiments of the present utility model.

In some examples, as shown in fig. 4, 5, 6 and 7, the water reservoir 300 includes a first fixing device 350, a second fixing device 360 and a plurality of waterproof plates 340, the first fixing device 350 fixing the waterproof plates 340 extending in the same direction, and the second fixing device 360 fixing the waterproof plates 340 extending in different directions.

Illustratively, the waterproof board 340 may be made of a waterproof material, not easily eroded by water, or may be coated with a waterproof cloth on the outer side of the wood board to achieve a waterproof effect.

Illustratively, the first and second fixtures 350 and 360 may be waterproof alloy materials, so that the first and second fixtures 350 and 360 have a certain self weight, and are capable of better fixing the waterproof board 340. As shown in fig. 5, the first fixing means may be an i-shaped device capable of fixing the waterproof plates 340 extending in the same direction. As shown in fig. 6, the second fixing means may be a corner connector capable of fixing the waterproof plate 340 extending in different directions.

Illustratively, six waterproof plates 340 may be provided, a first waterproof plate 341, a second waterproof plate 342, a third waterproof plate 343, a fourth waterproof plate 344, a fifth waterproof plate 345, and a sixth waterproof plate 346, respectively. The first waterproof plate 341 and the second waterproof plate 342 may be inserted into the first installation grooves 351 of both sides of the first fixing device 350, and fixed with the first fixing device 350 by interference fit. And the third waterproof plate 343 and the fourth waterproof plate 344 may also be fixed with the first fixing device 350. The first waterproof board 341 and the fifth waterproof board 345 may be inserted into two second installation grooves 361 of the second fixing device 360 perpendicular to each other, and fixed with the second fixing device 360 by interference fit. The third waterproof board 343 and the fifth waterproof board 345 may also be fixed by the second fixing device 360. The fourth waterproof plate 344 and the sixth waterproof plate 346 may be fixed by the second fixing device 360. The sixth waterproof board 346 and the second waterproof board 342 may be fixed by the second fixing device 360.

It will be appreciated that the first fixing device 350, the second fixing device 360 and the plurality of waterproof boards of the water reservoir 300 are detachably connected, and when the cooling tower 100 is operating normally, the first fixing device 350, the second fixing device 360 and the plurality of waterproof boards 340 of the water reservoir 300 can be detached, thereby saving space and being more beneficial to storage.

Illustratively, as shown in fig. 7, in a first step, the first and second fixtures 350 and 360 may be removed, and then the first, second, third and fourth waterproof plates 341, 342, 343 and 344 may be folded toward the inside of the water reservoir 300. In the second step, the second waterproof plate 342 and the fourth waterproof plate 344 may be folded over the first waterproof plate 341 and the third waterproof plate 343 by folding in half from the middle in the longitudinal direction (e.g., Y direction in fig. 7). In the third step, the third waterproof plate 343 and the fourth waterproof plate 344 may be folded in half from the middle in the longitudinal direction so as to be folded over the first waterproof plate 341 and the second waterproof plate 342. Finally, the detached fifth waterproof plate 345 and sixth waterproof plate 346 may be placed uppermost of the first waterproof plate 341, second waterproof plate 342, third waterproof plate 343 and fourth waterproof plate 344. So, can fold the cistern 300 and accomodate, save space, convenient transport.

In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. A cooling tower water circulation system, which is characterized by comprising a cooling tower, a filtering device, a water reservoir and a high-pressure water gun, wherein the cooling tower comprises a first inlet and a first outlet; the reservoir includes a second inlet and a second outlet;

the first outlet is communicated with the inlet of the filtering device through a pipeline; the outlet of the filtering device is communicated with the second inlet through a pipeline; the second outlet is communicated with the inlet of the high-pressure water gun through a pipeline; the outlet of the high-pressure water gun is communicated with the first inlet through a pipeline.

2. The cooling tower water circulation system of claim 1, further comprising a first valve located on the line between the first outlet and the inlet of the filter device for controlling the communication or interception of the line between the first outlet and the inlet of the filter device.

3. The cooling tower water circulation system of claim 1, further comprising a de-dirt device, a first water pump, and a demineralized water device; the cooling tower further includes a third inlet and a third outlet; the decontamination device includes a fourth inlet and a fourth outlet;

the third outlet is communicated with the fourth inlet through a pipeline; the fourth outlet is communicated with the inlet of the first water pump through a pipeline; the outlet of the first water pump is communicated with the inlet of the water softening device through a pipeline; the outlet of the water softening device is communicated with the third inlet through a pipeline.

4. A cooling tower water circulation system according to claim 3, further comprising a second valve located in the line between the third outlet and the fourth inlet for controlling the conduction or interception of the line between the third outlet and the fourth inlet.

5. The cooling tower water circulation system of claim 3, further comprising a second water pump; the reservoir further comprises a fifth outlet; the decontamination device further includes a fifth inlet;

the fifth outlet is communicated with the inlet of the second water pump through a pipeline; the outlet of the second water pump is communicated with the fifth inlet through a pipeline.

6. The cooling tower water circulation system of any one of claims 1-5, wherein the filter device includes a housing and a plurality of layers of first filter mesh;

the housing includes opposed first and second surfaces, the inlet of the filter device being located at the first surface and the outlet of the filter device being located at the second surface;

the first filter screens are sequentially arranged at intervals along the first direction; the first direction is perpendicular to the first surface; in the adjacent two layers of the first filter screens, the aperture of the first filter screen far away from the first surface is smaller than that of the first filter screen close to the first surface;

the filter device further comprises a second filter screen connected to the bottoms of the first filter screens; the second filter screen gradually approaches the bottom surface of the shell along the direction from the first surface to the second surface.

7. The cooling tower water circulation system of claim 6, wherein the inlet of the filter means is located outside of the orthographic projection of the edge of the second filter screen onto the first surface.

8. The cooling tower water circulation system according to claim 6 or 7, wherein the bottom of the filter device is provided with rollers.

9. The cooling tower water circulation system according to claim 6 or 7, wherein the top of the filter device is provided with a handle.

10. The cooling tower water circulation system of any one of claims 1 to 5, wherein the reservoir includes a first fixing means for fixing the waterproof plates extending in the same direction, a second fixing means for fixing the waterproof plates extending in different directions, and a plurality of waterproof plates.

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