An industrial cooling circulating water descaling and purification device

Abstract

This invention relates to the field of circulating water treatment technology, specifically an industrial cooling circulating water descaling and purification device, comprising: a tank, a nano-grid, a central shaft, a filter unit, a telescopic rod, and a cleaning cylinder. The filter unit has a nano-grid on its side wall, which buffers and reduces water hammer impact by moving along the central shaft. The filter unit rotates during movement via a guide cone spiral groove cooperating with a central shaft protrusion. The cleaning mechanism drives a soft cleaning cylinder via the telescopic rod, using the proximity and rotation of the filter units to clean the grid and the inner wall of the tank. Blockage location is achieved by monitoring the movement distance of the fixed arm, preventing direct impact on the grid and extending its service life. Multi-stage buffering reduces pressure shock, balancing protection and cost. Rotational cleaning combined with adaptive scrapers eliminates cleaning dead zones. Blockages can be located without disassembly, reducing maintenance costs. The cleaning components are retractable, reducing water flow obstruction and ensuring filtration efficiency.

Description

Technical Field

[0001] This invention relates to the field of circulating water treatment technology, and in particular to an industrial cooling circulating water descaling and purification device. Background Technology

[0002] In industrial circulating water systems, especially in the treatment of air compressor cooling water, filtration devices are often used to remove impurities, scale, and other pollutants from the cooling water. Existing filtration and adsorption devices use mesh-like nanomaterial grids to achieve high-precision filtration. However, during the operation of industrial circulating water systems, there are unavoidable conditions such as pump start-up and shutdown, and sudden changes in flow rate, which can easily trigger water hammer effects, causing the system pressure to momentarily exceed 2MPa. Nanomaterials are inherently brittle and have poor toughness, making it difficult to withstand such instantaneous impacts, often resulting in damage such as dents and cracks in the hopper. Increasing the thickness of the nanogrid to improve impact resistance would significantly increase the overall weight and manufacturing cost of the equipment, creating a technical dilemma.

[0003] Chinese patent application CN114920337A discloses a multi-purpose nano-rare earth anti-scaling and descaling processor, comprising a first flange, a second flange, a high-energy physical chamber, a nano-permanent magnet chamber, and a hybrid reinforcement chamber. One end of the flange is connected to the high-energy physical chamber, the other end of the high-energy physical chamber is connected to one end of the nano-permanent magnet chamber, the other end of the nano-permanent magnet chamber is connected to one end of the hybrid reinforcement chamber, and the other end of the hybrid reinforcement chamber is connected to the second flange. It also includes a filter grid disposed inside the high-energy physical chamber, the nano-permanent magnet chamber, and the hybrid reinforcement chamber, and the filter grid is made of nano-rare earth material. This invention's nano-rare earth anti-scaling and descaling multi-purpose processor utilizes nano-rare earth material and leverages the properties of rare earth elements to improve the water quality of industrial circulating water, achieving the purpose of removing old scale and rust, preventing the formation of new scale, forming a protective film of iron tetroxide, delaying corrosion, and killing bacteria and algae.

[0004] However, the intersections of the horizontal and vertical grids of the aforementioned mesh-like nanogrids are stress concentration points. After prolonged exposure to repeated water flow impacts, fatigue cracks are easily generated. Furthermore, the material's insufficient toughness makes grid breakage prone to occur. These broken nano-rare earth fragments are carried into subsequent pipes by the water flow, easily clogging downstream equipment and causing secondary malfunctions. In addition, existing multi-stage grids in filtration devices are mostly fixed installations, lacking effective online cleaning mechanisms. Contaminants easily accumulate on the grid surface, leading to decreased filtration efficiency. Moreover, when equipment malfunctions, staff cannot determine the specific level of blockage through external monitoring and must resort to "disassembly and troubleshooting" to locate the problem. This not only results in low work efficiency but also incurs high time and economic costs, significantly increasing maintenance difficulty. While some filtration devices are equipped with simple cleaning components, these are often fixed structures that obstruct water flow, affecting filtration smoothness. Furthermore, the cleaning components lack adaptive adjustment capabilities, making it difficult to cover the dead zones of the grid and tank inner walls, resulting in limited cleaning effectiveness and failing to meet long-term stable filtration requirements. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an industrial cooling circulating water descaling and purification device, comprising a tank body, wherein the tank body is filled with air compressor cooling water;

[0008] The nanogrid has at least two nanogrids, which are made of nano-rare earth materials, and a central axis is fixed inside the tank.

[0009] The filter unit has at least two stages and is coaxially movably disposed outside the central shaft. When the cooling water inlet of the air compressor increases, it pushes the filter unit to move for buffering. The filter unit rotates when it moves along the central shaft.

[0010] The telescopic rods unfold into an arc shape when the filter unit rotates. Each telescopic rod is equipped with a cleaning cylinder, which is used to clean the outer wall of the previous filter unit.

[0011] As a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, the filtration unit includes a positioning layer that is movably attached to the inner wall of the tank, a filtration layer is provided on the lower end face of the positioning layer, the nanogrid is provided on the side wall of the filtration layer, and the nanogrid is provided with filtration holes.

[0012] As a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, the bottom surface of the inner wall of the filter layer is provided with a flow guide cone to guide the water flow and reduce the impact force of the fluid on the filter layer. The flow guide cone is provided with a through hole and a spiral groove is provided on the through hole. The outer wall of the central shaft is provided with a protruding post, which is slidably disposed on the spiral groove.

[0013] As a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, wherein: an annular groove is provided on the upper port of the positioning layer, a base block is fixedly provided in the annular groove and a movable block is slidably provided therein, and each of the telescopic rods is rotatably provided on the base block and each of the movable blocks respectively.

[0014] As a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, wherein: the telescopic rod is rotatably provided with a transmission tooth on the outer wall of one end of the movable block, and the two telescopic rods provided on the same movable block are connected by the meshing of the transmission tooth.

[0015] As a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, wherein: the inner wall of the annular groove is provided with a swing groove, a fixed arm is fixedly provided on the outermost movable block, a sliding groove is provided on the central shaft, a damping column is provided in the sliding groove, and the fixed arm is sleeved on the outer wall of the damping column for measuring the moving distance of the fixed arm.

[0016] As a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, the surface of the cleaning cylinder is provided with grooves, and the interior of the cleaning cylinder is provided with an adjustment hole.

[0017] In a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, a sliding tube is slidably provided inside the adjustment hole, and a scraper is provided at one end of the sliding tube near the outside.

[0018] As a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, wherein: a limiting groove is provided on the inner wall of the adjusting hole, and a limiting block is provided on the outer wall of the sliding tube.

[0019] In a preferred embodiment of the industrial cooling circulating water descaling and purification device of the present invention, the limiting block is slidably disposed inside the limiting groove, and a first elastic element is provided between the two sliding tube end faces.

[0020] The beneficial effects of this invention are as follows: The filter unit's sidewall is equipped with a nano-grid, which buffers and reduces water hammer impact by moving along the central axis; the filter unit rotates during movement thanks to the cooperation of the guide cone spiral groove and the central axis protrusion; the cleaning mechanism drives a soft cleaning cylinder via a telescopic rod, utilizing the proximity and rotation between filter units to clean the grid and the inner wall of the tank; the telescopic rod is retractable, the cleaning cylinder has adaptive scrapers, and blockage location is achieved through fixed arm movement distance monitoring, preventing direct impact on the grid and extending its service life; multi-stage buffering reduces pressure impact, balancing protection and cost; the self-rotating cleaning combined with adaptive scrapers eliminates cleaning dead zones; blockages can be located without disassembly, reducing maintenance costs; the retractable cleaning components reduce water flow obstruction and ensure filtration efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0022] Figure 1 This is a schematic diagram of the overall industrial cooling circulating water descaling and purification device of the present invention.

[0023] Figure 2 This is a diagram of the internal structure of the tank in this invention.

[0024] Figure 3 This is a schematic diagram of cleaning the filter unit in Embodiment 1 of the present invention.

[0025] Figure 4 This is a schematic diagram of the telescopic pole area in Embodiment 2 of the present invention.

[0026] Figure 5 This is an enlarged cross-sectional view of the filtering unit in Embodiment 3 of the present invention.

[0027] Figure 6 This is a schematic diagram of the cleaning cylinder in this invention.

[0028] Figure 7 This is a schematic diagram of the internal structure of the cleaning cylinder in this invention.

[0029] Figure 8 In this invention Figure 7 Enlarged schematic diagram of region A in the middle.

[0030] Explanation of reference numerals in the attached drawings: 100, tank body;

[0031] 200. Nanoscale grid; 201. Central axis;

[0032] 300, Filter unit; 3001, Positioning layer; 3002, Filter layer; 3003, Filter hole; 3004, Guide cone; 3005, Through hole; 3006, Spiral groove; 3007, Protruding post;

[0033] 400, Telescopic rod; 401, Cleaning cylinder; 4001, Annular groove; 4002, Base block; 4003, Movable block; 4004, Transmission gear; 4005, Swing groove; 4006, Fixed arm; 4007, Slide groove; 4008, Groove; 4009, Adjustment hole; 4011, Sliding tube; 4012, Scraper; 4013, Limiting groove; 4014, Limiting block; 4015, First elastic element. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0037] Example 1

[0038] Reference Figures 1-8 This is the first embodiment of the present invention, which provides an industrial cooling circulating water descaling and purification device, specifically including:

[0039] Tank 100, which is filled with air compressor cooling water;

[0040] The nano grid 200 is provided in at least two parts. The nano grid 200 is made of nano rare earth material. The central shaft 201 is also fixed inside the tank body 100.

[0041] The filter unit 300 has at least two stages and is coaxially and movably located outside the central shaft 201. When the cooling water inlet of the air compressor increases, it pushes the filter unit 300 to move for buffering. The filter unit 300 rotates when it moves along the central shaft 201.

[0042] Telescopic rods 400 unfold into an arc shape when the filter unit 300 rotates. A cleaning cylinder 401 is provided on the telescopic rods 400, which is used to clean the outer wall of the previous filter unit 300.

[0043] The filter unit 300 is used to descale and purify the cooling water. After treatment, the air compressor cooling water re-enters the water cooling system for recycling. Industrial circulating water systems often experience pressure fluctuations, such as water hammer effects caused by pump start-up and shutdown, with instantaneous pressure exceeding 2MPa. At the same time, the nano-rare earth material itself is highly brittle and may cause the chamber to dent or crack under pressure impact. If the thickness of the nano-grid is increased, it will increase the overall weight and cost of the equipment.

[0044] Meanwhile, the existing mesh-like nanogrids have stress concentration points at the intersection of the horizontal and vertical grids. They are prone to fatigue cracks when subjected to repeated impacts from water flow over a long period of time. In addition, the nano-rare earth materials themselves have poor toughness, and some grids may break after long-term use. The broken nano-rare earth fragments may enter the subsequent pipeline with the water flow, which may block downstream equipment and cause secondary failures.

[0045] When internal equipment is blocked, it is impossible to know in time which level of the grid is blocked. Staff cannot make a judgment without disassembling the equipment and can only locate the fault by "disassembling and checking". This is inefficient and costly in terms of time and money, and increases the difficulty of operation and maintenance.

[0046] Preferably, such as Figure 2 As shown, the filtration unit 300 includes a positioning layer 3001 that is movably attached to the inner wall of the tank 100. A filtration layer 3002 is provided on the lower end face of the positioning layer 3001. A nano grid 200 is provided on the side wall of the filtration layer 3002. Filtration holes 3003 are provided on the nano grid 200.

[0047] More preferably, a guide cone 3004 is provided on the bottom surface of the inner wall of the filter layer 3002 to guide the water flow and reduce the impact force of the fluid on the filter layer 3002. A through hole 3005 is provided on the guide cone 3004, and a spiral groove 3006 is provided on the through hole 3005. A protrusion 3007 is provided on the outer wall of the central shaft 201, and the protrusion 3007 is slidably disposed on the spiral groove 3006.

[0048] In this embodiment, the filter unit 300 and the nano grid 200 are provided in three sets. In other embodiments, the number can be determined according to the descaling accuracy. The spiral groove 3006 is a spiral-shaped groove, and the surface of the protrusion 3007 is a smooth rounded corner, so that the protrusion 3007 can slide in the spiral groove 3006.

[0049] The positioning layer 3001 is provided with a reset and rebound device between it and the tank body 100. In this embodiment, a spring is used so that after the filter layer 3002 is moved and buffered by the impact of water flow, it is reset to the initial position under the pull of the spring.

[0050] Furthermore, such as Figure 3 In this embodiment, the cleaning cylinder 401 is made of soft rubber and is positioned between the inner wall of the tank 100 and the filter layer 3002 after the telescopic rod 400 is extended. As the filter unit 300 rotates, it drives the cleaning cylinder 401 to rotate, thereby removing the nanogrid 200.

[0051] More preferably, in this embodiment, the telescopic rod 400 is a sliding rod with a fixed distance. When the upper filter unit 300 approaches, the hydraulic cylinder pushes each telescopic rod 400 to slide synchronously in a circular distribution for cleaning. As the upper filter unit 300 resets, it retracts and gathers after the reset is completed to prevent obstruction of water flow and improve filtration efficiency.

[0052] In summary, since the nano-grid 200 is located on the side wall of the filter unit 300, direct water flow scouring is avoided. At the same time, the filter unit 300 can move and buffer, reducing the possibility of impact damage and extending its service life. When the liquid flow suddenly increases, the pressure on one side of the first-stage filter unit 300 increases and it moves downward. While moving, some liquid moves downward synchronously, which increases the pressure between the first-stage filter unit 300 and the second-stage filter unit 300. However, since the filter unit 300 has filter holes 3003 that can guide some liquid, the pressure on the later filter units 300 is smaller and the moving distance is smaller. As the filter unit 300 slides downward along the central axis 201, the distance between the two adjacent filter units 300 will decrease.

[0053] At the same time, as the two filter units 300 approach each other, the filter layer 3002 of the previous stage moves down to the area of ​​the cleaning cylinder 401 of the next stage. Meanwhile, the protrusion 3007 slides relative to each other on the spiral groove 3006, causing the filter unit 300 to rotate and causing the attached cleaning cylinder 401 to rotate. Since the two sides of the cleaning cylinder 401 not only clean the outer wall of the nano grid 200, but also clean the inner wall of the tank 100, and the reciprocating buffer sliding of the positioning layer 3001 can also assist in cleaning the surface of the tank 100, preventing the accumulation of scale and affecting the descaling effect.

[0054] Example 2

[0055] Reference Figures 1-8 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, except that the telescopic rod 400 can be retracted to the surface of the tank 100 when not in use, reducing the obstruction effect on water flow.

[0056] Specifically, an annular groove 4001 is provided at the upper port of the positioning layer 3001. A base block 4002 is fixedly provided in the annular groove 4001, and a movable block 4003 is also slidably provided. Each telescopic rod 400 is rotatably provided on the base block 4002 and each movable block 4003 respectively.

[0057] In this embodiment, there are 12 telescopic rods 400, 1 base block 4002, and 6 movable blocks 4003. One end of each telescopic rod 400 is rotatably connected to the base block 4002 and the movable block 4003. Two telescopic rods 400 are rotatably mounted on one movable block 4003.

[0058] More preferably, the movable block 4003 is partially annular in shape, with two telescopic rods 400 hinged together on the side near the central axis 201 and the cleaning cylinder 401 rotatably positioned there, thereby allowing the adjustable stroke of the cleaning cylinder 401 to be adjusted as much as possible.

[0059] The telescopic rod 400 is rotatably mounted on the outer wall of one end of the movable block 4003 and is provided with a transmission tooth 4004. Two telescopic rods 400 mounted on the same movable block 4003 are connected by meshing through the transmission tooth 4004.

[0060] Even better, the cleaning cylinder 401 is made of soft rubber and is hollow inside and filled with liquid. It has a hollow rubber strip on its surface, which is also filled with liquid and connected to the cleaning cylinder 401. The overall hydraulic pressure is adjusted by a hydraulic cylinder.

[0061] When the filter unit 300 moves down, the hydraulic cylinder increases the hydraulic pressure inside the cleaning cylinder 401, causing the hollow rubber strip to expand and clean the inner wall of the tank 100 and the filter layer 3002 simultaneously.

[0062] Furthermore, the inner wall of the annular groove 4001 is provided with a swing groove 4005, and a fixed arm 4006 is fixedly provided on the outermost movable block 4003. A sliding groove 4007 is provided on the central shaft 201, and a damping column is provided in the sliding groove 4007. The fixed arm 4006 is sleeved on the outer wall of the damping column and is used to measure the moving distance of the fixed arm 4006.

[0063] Among them, the fixed arm 4006 moves up and down with the filter unit 300 but cannot rotate. Therefore, the movement distance of each fixed arm 4006 on the damping column is monitored by the distance sensor to obtain movement data. By comparing the decrease in each movement distance, the clogging status of each filter unit 300 can be determined.

[0064] In summary, during use, as the filter unit 300 rotates while the fixed arm 4006 remains stationary, each telescopic rod 400 begins to rotate and unfold. Simultaneously, two telescopic rods 400 located on the same movable block 4003 engage and rotate, causing each telescopic rod 400 to move at the same amplitude. Each cleaning cylinder 401 unfolds synchronously, and the increased hydraulic pressure causes the hollow rubber strip to expand and scrape the outer wall of the filter unit 300 and the inner wall of the tank 100. After cleaning, each cleaning cylinder 401 and telescopic rod 400 retracts, reducing obstruction to liquid flow and ensuring the descaling efficiency of the air compressor cooling water.

[0065] Example 3

[0066] Reference Figures 1-8 This is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the cleaning cylinder 401 has an adaptive adjustment function, which automatically adjusts the length of the scraper 4012 to remove scale from dead corners.

[0067] Specifically, the surface of the cleaning cylinder 401 is provided with a groove 4008, and an adjustment hole 4009 is provided through the inside of the cleaning cylinder 401. A sliding tube 4011 is slidably provided in the adjustment hole 4009, and a scraper 4012 is provided at one end of the sliding tube 4011 near the outside.

[0068] Among them, the scraper 4012 is a hollow rubber strip and is connected to the hollow sliding tube 4011. When it is squeezed, the liquid inside flows through the sliding tube 4011 into the regulating hole 4009.

[0069] Furthermore, a limiting groove 4013 is provided on the inner wall of the adjusting hole 4009, and a limiting block 4014 is provided on the outer wall of the sliding tube 4011. The limiting block 4014 is slidably disposed inside the limiting groove 4013, and a first elastic element 4015 is provided between the end faces of the two sliding tubes 4011.

[0070] The first elastic element 4015 is a spring that constantly pulls the two sliding tubes 4011 closer to the center. At this time, the scraper 4012 is relatively short. When the scraper 4012 on one side contacts the nano-grid 200 or the inner wall of the tank 100, it is squeezed, causing the oil to enter the regulating hole 4009 and push the two sliding tubes 4011 to slide outward. As a result, the scraper 4012 on the other side is extended and contacts the dead corner area, preventing the cleaning cylinder 401 from cleaning only one side while there is a dead corner on the other side, thus achieving the effect of simultaneous cleaning and eliminating dead corners.

[0071] Meanwhile, because there is a buffer space between the scraper 4012 and the sliding tube 4011, the scraper 4012 can still bend and deform when it is blocked after being inserted into the filter hole 3003, thus detaching itself and reducing the equipment failure rate.

[0072] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. Any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0073] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0074] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. An industrial cooling circulating water descaling and purification device, characterized in that: Tank (100), the tank (100) being filled with air compressor cooling water; The nanogrid (200) is provided with at least two nanogrids (200), the nanogrids (200) are made of nano rare earth materials, and the tank body (100) is also fixedly provided with a central shaft (201). The filter unit (300) is used to descale and purify the cooling water, and the air compressor cooling water is recycled back into the water cooling system after treatment. Telescopic rod (400) is used to clean the outer wall of the filter unit (300).

2. The industrial cooling circulating water descaling and purification device as described in claim 1, characterized in that: The filter unit (300) has at least two stages and is coaxially movably located outside the central shaft (201). When the cooling water inlet of the air compressor increases, it pushes the filter unit (300) to move for buffering. The filter unit (300) rotates when it moves along the central shaft (201). The filter unit (300) includes a positioning layer (3001) that is movably attached to the inner wall of the tank (100), a filter layer (3002) is provided on the lower end face of the positioning layer (3001), a nano grid (200) is provided on the side wall of the filter layer (3002), and filter holes (3003) are provided on the nano grid (200). Each of the telescopic rods (400) unfolds into an arc shape when the filter unit (300) rotates. A cleaning cylinder (401) is provided on the telescopic rod (400), and the cleaning cylinder (401) is used to clean the outer wall of the previous filter unit (300).

3. The industrial cooling circulating water descaling and purification device as described in claim 2, characterized in that: The bottom surface of the inner wall of the filter layer (3002) is provided with a flow guide cone (3004) to guide the water flow and reduce the impact force of the fluid on the filter layer (3002). The flow guide cone (3004) is provided with a through hole (3005) and a spiral groove (3006) is provided on the through hole (3005). The outer wall of the central shaft (201) is provided with a protrusion (3007) and the protrusion (3007) is slidably disposed on the spiral groove (3006).

4. The industrial cooling circulating water descaling and purification device as described in claim 3, characterized in that: The positioning layer (3001) has an annular groove (4001) at its upper port. A base block (4002) is fixedly installed in the annular groove (4001), and a movable block (4003) is also slidably installed therein. Each of the telescopic rods (400) is rotatably installed on the base block (4002) and each of the movable blocks (4003).

5. The industrial cooling circulating water descaling and purification device as described in claim 4, characterized in that: The telescopic rod (400) is rotatably mounted on the outer wall of one end of the movable block (4003) and has a transmission tooth (4004). Two telescopic rods (400) mounted on the same movable block (4003) are connected by the transmission tooth (4004).

6. The industrial cooling circulating water descaling and purification device as described in claim 5, characterized in that: The inner wall of the annular groove (4001) is provided with a swing groove (4005). A fixed arm (4006) is fixed on the outermost movable block (4003). A sliding groove (4007) is provided on the central shaft (201). A damping column is provided in the sliding groove (4007). The fixed arm (4006) is sleeved on the outer wall of the damping column and is used to measure the moving distance of the fixed arm (4006).

7. The industrial cooling circulating water descaling and purification device as described in claim 6, characterized in that: The surface of the cleaning cylinder (401) is provided with grooves (4008), and the interior of the cleaning cylinder (401) is provided with adjustment holes (4009).

8. The industrial cooling circulating water descaling and purification device as described in claim 7, characterized in that: A sliding tube (4011) is slidably provided inside the adjustment hole (4009), and a scraper (4012) is provided at one end of the sliding tube (4011) near the outside.

9. The industrial cooling circulating water descaling and purification device as described in claim 8, characterized in that: The inner wall of the adjustment hole (4009) is provided with a limiting groove (4013), and the outer wall of the sliding tube (4011) is provided with a limiting block (4014).

10. The industrial cooling circulating water descaling and purification device as described in claim 9, characterized in that: The limiting block (4014) is slidably disposed inside the limiting groove (4013), and a first elastic element (4015) is provided between the end faces of the two sliding tubes (4011).

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