Circulating water purification device for color master batch production

By using a combination of pressure filtration and ultraviolet disinfection in the production of color masterbatch, the problem of slow filtration rate of wastewater from color masterbatch production was solved, achieving efficient filtration and sterilization effects and ensuring the stability of subsequent filtration.

CN121537002AInactive Publication Date: 2026-02-17ANHUI JIHONG MATERIAL TECH
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Patent Information

Application Number
CN202511982987.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-26
Publication Date
2026-02-17
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The wastewater generated during the current color masterbatch production process has a slow filtration rate and low filtration efficiency.

Method used

It adopts a combination of pressure filtration and ultraviolet disinfection. By using waterproof activated carbon filter plates and ultraviolet disinfection lamps together, the filtration rate is improved and sterilization is achieved.

Benefits of technology

It achieves highly efficient filtration and sterilization, reduces wastewater viscosity, and improves the efficiency and stability of subsequent filtration.

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Abstract

The invention relates to the technical field of color master batch production, and discloses a color master batch production circulating water purification device which comprises a water inlet pipe, a control valve is installed in the middle of the water inlet pipe, a barrel is fixedly connected to the outer wall of the water inlet pipe, and a water outlet pipe is fixedly arranged in the barrel. A waterproof activated carbon filter plate is fixedly arranged in the barrel and divides the interior of the barrel into an upper bin and a lower bin, an electric push rod is fixedly arranged on the inner top wall of the barrel, a pressing plate is fixedly arranged at the driving end of the electric push rod, and the outer wall of the pressing plate is slidably connected to the interior of the barrel; and the inner bottom wall of the water inlet pipe is fixedly connected with a power supply. The water source to be purified is pressurized and filtered, so that the filtering rate is improved, the filtered water source can be sterilized and disinfected through the ultraviolet disinfection lamp arranged in the lower bin chamber of the barrel, the viscosity of sewage is reduced, and the effect of subsequent secondary filtering is facilitated.
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Description

Technical Field

[0001] This invention relates to the field of color masterbatch production technology, specifically to a circulating water purification device for color masterbatch production. Background Technology

[0002] Color masterbatch is a granular masterbatch made by mixing, melt extrusion, and pelletizing high-concentration pigments or dyes, carrier resins, dispersants, antioxidants, and other additives. Its core function is to provide precise and uniform coloring effects for polymer materials such as plastics, fibers, and films. Essentially, it is a "pigment concentrate". When using it, there is no need to add powdered pigments directly. It can be processed simply by mixing it with blank substrates in proportion. This can avoid pigment flying and pollution, improve dispersibility, and ensure the color consistency of the product. It is widely used in plastic processing scenarios such as injection molding, blown film, and fiber drawing, simplifying the production process and improving the appearance quality of the product.

[0003] The production of color masterbatch generates a large amount of wastewater, which often contains a large number of impurities and pigments. Existing methods for filtration of wastewater generated during the production of color masterbatch typically employ multi-stage filtration ponds for purification, but these methods are slow and have low filtration efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a circulating water purification device for masterbatch production, which solves the problems of slow filtration rate and low filtration efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a circulating water purification device for masterbatch production, comprising an inlet pipe, a control valve installed in the middle of the inlet pipe, a cylinder fixedly connected to the outer wall of the inlet pipe, an outlet pipe fixedly installed inside the cylinder, a waterproof activated carbon filter plate fixedly installed inside the cylinder, the waterproof activated carbon filter plate dividing the inside of the cylinder into an upper chamber and a lower chamber, an electric push rod fixedly installed on the inner top wall of the cylinder, a pressure plate fixedly installed at the drive end of the electric push rod, the outer wall of the pressure plate slidably connected to the inside of the cylinder, a power source fixedly connected to the inner bottom wall of the inlet pipe, and an ultraviolet disinfection lamp installed on the upper surface of the power source.

[0006] Through the above technical solution: the water source to be purified first enters the upper chamber of the cylinder through the control valve and the inlet pipe. Then, the pressure plate is moved down by the electric push rod to pressurize and increase the filtration rate of the water source to be purified. The filtered water flows into the lower chamber and is sterilized by the ultraviolet disinfection lamp. Through the combination of pressurized filtration and ultraviolet disinfection lamp, the effects of high-efficiency filtration, sterilization and disinfection and reduction of sewage viscosity are achieved, laying the foundation for subsequent secondary filtration.

[0007] Preferably, an air guiding assembly is installed on the upper surface of the pressure plate. The air guiding assembly includes a fixed column, the top end of which is fixedly connected to the inner top wall of the cylinder. An air guiding pipe is fixedly installed inside the fixed column. A sliding assembly is fixedly installed at the end of the air guiding pipe away from the fixed column. The sliding assembly includes a sliding plate, the outer wall of which is slidably connected to the inside of the cylinder. A through pipe is slidably connected to the outer wall of the sliding plate, and the outer wall of the through pipe is fixedly connected to the inner top wall of the cylinder.

[0008] Preferably, the air guiding assembly further includes a sliding rod, the bottom end of which is fixedly connected to the upper surface of the pressure plate, the outer wall of which is slidably connected to the interior of the first fixed column, an air bladder penetrating the outer wall of which is installed inside the first fixed column, a fixed plate fixedly connected to the top end of the sliding rod, the lower surface of which is attached to the top end of the air bladder, the outer wall of which is slidably connected to the interior of the first fixed column, and the end of the air guiding tube away from the electric push rod is fixedly disposed inside the air bladder.

[0009] Preferably, the sliding assembly further includes a second fixed column, the end of the air guide tube away from the first fixed column is fixedly disposed in the middle of the second fixed column, a plurality of first sliding columns are slidably connected inside the second fixed column, an elastic element is fixedly disposed on the outer wall of the first sliding column, and the end of the first sliding column away from the elastic element is fixedly connected inside the sliding plate.

[0010] Preferably, the sliding plate has holes inside, and the size of the holes is adapted to the through pipe.

[0011] Preferably, a plurality of fixing frames are fixedly connected to the lower surface of the pressure plate, and a rotating assembly is installed on the lower surface of the fixing frames. The rotating assembly includes a cross plate, and the lower surface of the cross plate is attached to the upper surface of the waterproof activated carbon filter plate.

[0012] Preferably, the rotating assembly further includes a threaded block, the upper surface of which is fixedly connected to the lower surface of the fixing frame, and a ball screw is threadedly connected inside the threaded block. The top end of the ball screw is rotatably connected to the inside of the pressure plate, and the bottom end of the ball screw is fixedly connected to the inside of the cross plate.

[0013] Preferably, a plurality of fixed columns three are fixedly connected to the upper surface of the power supply, and a sliding column two is slidably connected inside the fixed column three. A shape memory metal is fixedly provided at the bottom end of the sliding column two, and the end of the shape memory metal away from the sliding column two is fixedly provided on the inner bottom wall of the fixed column three. A stirring component is installed at the top end of the sliding column two.

[0014] Preferably, the stirring assembly includes a toothed plate, the lower surface of which is fixedly connected to the top of the sliding column II, the toothed ends of which are meshed with gears, a rotating roller is fixedly connected inside the gears, the outer wall of the rotating roller is rotatably connected to the inside of the cylinder, and stirring blades are fixedly connected to the outer wall of the rotating roller.

[0015] Preferably, the interior of the stirring blade is provided with multiple holes to reduce the resistance from external water when the stirring blade rotates.

[0016] Working principle: After the water to be purified is sent into the upper chamber of the cylinder through the control valve and the inlet pipe, the pressure plate is pushed down by the electric push rod to increase the pressure, thereby increasing the rate at which the water passes through the waterproof activated carbon filter plate. After being filtered by the waterproof activated carbon filter plate to adsorb impurities, the water flows into the lower chamber and is sterilized by the ultraviolet disinfection lamp. The power supply is used to provide power to the ultraviolet disinfection lamp. Through the cooperation between pressurized filtration and ultraviolet disinfection lamp, the filtration rate is increased, and sterilization and disinfection are achieved, as well as the viscosity of the sewage is reduced, so as to facilitate the subsequent secondary filtration.

[0017] This invention provides a circulating water purification device for masterbatch production. It has the following beneficial effects: 1. This invention uses a power supply and ultraviolet disinfection lamp installed in the lower chamber to sterilize the water source filtered by the waterproof activated carbon filter plate with ultraviolet light. This achieves the effect of pressurizing and filtering the water source to be purified, increasing the filtration rate, while also sterilizing and disinfecting the filtered water source through the ultraviolet disinfection lamp installed in the lower chamber of the cylinder, reducing the viscosity of the sewage, and facilitating subsequent secondary filtration.

[0018] 2. This invention introduces external gas into the pressure plate through holes in the pipe and sliding plate, thereby automatically balancing the air pressure above the pressure plate when it is pressed down, ensuring that the pressurized filtration operation can operate normally and stably.

[0019] 3. This invention achieves automatic cleaning of the waterproof activated carbon filter plate during pressure filtration by rotating a cross plate on the upper surface of the filter plate. This prevents large particles from clogging the filter pores of the waterproof activated carbon filter plate after prolonged use, ensuring stable and normal operation of the filtration process.

[0020] 4. This invention uses a stirring blade to rotate in the lower chamber, thereby agitating the water inside the lower chamber. This improves the uniformity of ultraviolet sterilization and disinfection while also increasing the sterilization and disinfection rate. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the pressure plate of the present invention; Figure 3 This is a partial structural diagram of the airbag of the present invention; Figure 4 This is a partial structural diagram of the fixing column of the present invention; Figure 5 This is a partial structural diagram of the sliding plate of the present invention; Figure 6 This is a partial structural diagram of the cross plate of the present invention; Figure 7 This is a partial structural diagram of the rotating roller of the present invention; Figure 8 This is a schematic diagram of a partial structure of the shape memory metal of the present invention.

[0022] The components include: 1. Inlet pipe; 2. Control valve; 3. Cylinder; 4. Outlet pipe; 5. Waterproof activated carbon filter plate; 6. Electric push rod; 7. Pressure plate; 8. Power supply; 9. Ultraviolet disinfection lamp; 10. Air guiding assembly; 101. Sliding rod; 102. Fixed column one; 103. Fixed plate; 104. Airbag; 11. Air guiding pipe; 12. Sliding assembly; 121. Fixed column two; 122. Sliding column one; 123. Elastic element one; 124. Sliding plate; 13. Through pipe; 14. Fixing frame; 15. Rotating assembly; 151. Threaded block; 152. Ball screw; 153. Cross plate; 16. Fixed column three; 17. Shape memory metal; 18. Sliding column two; 19. Stirring assembly; 191. Toothed plate; 192. Gear; 193. Rotating roller; 194. Stirring blade; 20. Upper chamber; 21. Lower chamber. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see the appendix Figure 1 - Appendix Figure 4This invention provides a circulating water purification device for masterbatch production, including an inlet pipe 1, a control valve 2 installed in the middle of the inlet pipe 1, a cylinder 3 fixedly connected to the outer wall of the inlet pipe 1, an outlet pipe 4 fixedly installed inside the cylinder 3, a waterproof activated carbon filter plate 5 fixedly installed inside the cylinder 3, and the waterproof activated carbon filter plate 5 divides the inside of the cylinder 3 into an upper chamber 20 and a lower chamber 21, an electric push rod 6 fixedly installed on the inner top wall of the cylinder 3, a pressure plate 7 fixedly installed at the drive end of the electric push rod 6, the outer wall of the pressure plate 7 being slidably connected to the inside of the cylinder 3, a power supply 8 fixedly connected to the inner bottom wall of the inlet pipe 1, and an ultraviolet disinfection lamp 9 installed on the upper surface of the power supply 8.

[0025] Specifically, the water to be purified is transported to the upper chamber 20 inside the cylinder 3 through the inlet pipe 1 via the control valve 2. Then, the electric push rod 6 is activated to drive the pressure plate 7 fixedly connected to its drive end to slide downward, further pressurizing the water to be purified in the upper chamber 20 and increasing its speed of passing through the waterproof activated carbon filter plate 5. The water that has been filtered by the waterproof activated carbon filter plate 5 will flow into the lower chamber 21 inside the cylinder 3. The water filtered by the waterproof activated carbon filter plate 5 will be sterilized by the power supply 8 and the ultraviolet disinfection lamp 9 installed in the lower chamber 21. This achieves the effect of pressurizing and filtering the water to be purified, increasing the filtration rate, and sterilizing and disinfecting the filtered water by the ultraviolet disinfection lamp 9 installed in the lower chamber 21 of the cylinder 3, reducing the viscosity of the sewage and facilitating subsequent secondary filtration.

[0026] Please see the appendix Figure 1 - Appendix Figure 5An air guiding assembly 10 is installed on the upper surface of the pressure plate 7. The air guiding assembly 10 includes a fixed column 102, the top of which is fixedly connected to the inner top wall of the cylinder 3. An air guiding pipe 11 is fixedly installed inside the fixed column 102. A sliding assembly 12 is fixedly installed at the end of the air guiding pipe 11 away from the fixed column 102. The sliding assembly 12 includes a sliding plate 124, the outer wall of which is slidably connected to the inside of the cylinder 3. A through pipe 13 is slidably connected to the outer wall of the sliding plate 124, and the outer wall of the through pipe 13 is fixedly connected to the inner top wall of the cylinder 3. The air guiding assembly 10 also includes a sliding rod 101, the bottom of which is fixedly connected to the upper surface of the pressure plate 7. The outer wall of the sliding rod 101 is slidably connected to the inside of the fixed column 102. An airbag 104 passes through the outer wall of the sliding rod 101. The airbag 104 is installed... Inside the fixed post 102, the top end of the sliding rod 101 is fixedly connected to the fixed plate 103. The lower surface of the fixed plate 103 is attached to the top end of the airbag 104. The outer wall of the fixed plate 103 is slidably connected to the inside of the fixed post 102. The end of the air guide tube 11 away from the electric push rod 6 is fixedly installed inside the airbag 104. The sliding assembly 12 also includes a fixed post 121. The end of the air guide tube 11 away from the fixed post 102 is fixedly installed in the middle of the fixed post 121. Multiple sliding posts 122 are slidably connected inside the fixed post 121. An elastic element 123 is fixedly installed on the outer wall of the sliding post 122. The end of the sliding post 122 away from the elastic element 123 is fixedly connected to the inside of the sliding plate 124. The sliding plate 124 has holes inside, and the size of the holes is adapted to the through tube 13.

[0027] Specifically, when the pressure plate 7 pressurizes and filters the water to be purified in the upper chamber 20, the fixing action of the pressure plate 7 and the sliding rod 101 causes the sliding rod 101 to slide downward inside the fixed column 102. When the sliding rod 101 slides downward, the fixing action of the sliding rod 101 and the fixed plate 103 causes the fixed plate 103 to slide downward, further compressing the airbag 104 installed inside it. The gas generated by compressing the airbag 104 is then transported to the fixed column 121 through the air guide pipe 11, thereby pushing the sliding column 12 inside the fixed column 121. 2. The sliding column 122 slides while stretching the elastic element 123. When the sliding column 122 slides, the sliding plate 124 is driven to slide inside the cylinder 3 by the fixing action of the sliding column 122 and the sliding plate 124. When the sliding plate 124 slides a certain distance and the hole opened inside it coincides with the through pipe 13, the external gas will enter the pressure plate 7 through the through pipe 13 and the hole opened inside the sliding plate 124. This achieves automatic balance of the air pressure above the pressure plate 7 when it is pressed down, ensuring that the pressurized filtration operation can be operated normally and stably.

[0028] Please see the appendix Figure 2 Appendix Figure 6 and attached Figure 7 Multiple fixing brackets 14 are fixedly connected to the lower surface of the pressure plate 7. A rotating assembly 15 is installed on the lower surface of the fixing bracket 14. The rotating assembly 15 includes a cross plate 153, the lower surface of which is attached to the upper surface of the waterproof activated carbon filter plate 5. The rotating assembly 15 also includes a threaded block 151, the upper surface of which is fixedly connected to the lower surface of the fixing bracket 14. A ball screw 152 is threadedly connected to the inside of the threaded block 151. The top end of the ball screw 152 is rotatably connected to the inside of the pressure plate 7, and the bottom end of the ball screw 152 is fixedly connected to the inside of the cross plate 153.

[0029] Specifically, as the pressure plate 7 moves downward, the fixing action of the pressure plate 7 and the fixing frame 14 causes the fixing frame 14 to move downward, which in turn causes the threaded block 151 to move downward on the outer wall of the ball screw 152, further causing the ball screw 152 to rotate. When the ball screw 152 rotates, the fixing action of the ball screw 152 and the cross plate 153 causes the cross plate 153 to rotate on the upper surface of the waterproof activated carbon filter plate 5. This achieves automatic cleaning of the waterproof activated carbon filter plate 5 during pressure filtration, preventing large particles from clogging the filter holes of the waterproof activated carbon filter plate 5 after long-term use, and ensuring stable and normal operation of the filtration process.

[0030] Please see the appendix Figure 6 - Appendix Figure 8 Multiple fixed columns 16 are fixedly connected to the upper surface of the power supply 8. A sliding column 18 is slidably connected inside the fixed column 16. A shape memory metal 17 is fixedly installed at the bottom end of the sliding column 18. The end of the shape memory metal 17 away from the sliding column 18 is fixedly installed on the inner bottom wall of the fixed column 16. A stirring assembly 19 is installed at the top of the sliding column 18. The stirring assembly 19 includes a toothed plate 191. The lower surface of the toothed plate 191 is fixedly connected to the top of the sliding column 18. A gear 192 is meshed with the toothed end of the toothed plate 191. A rotating roller 193 is fixedly connected inside the gear 192. The outer wall of the rotating roller 193 is rotatably connected to the inside of the cylinder 3. A stirring blade 194 is fixedly connected to the outer wall of the rotating roller 193. Multiple holes are evenly opened inside the stirring blade 194 to reduce the resistance of external water when the stirring blade 194 rotates.

[0031] Specifically, when the ultraviolet disinfection lamp 9 sterilizes the water in the lower chamber 21, the temperature inside the lower chamber 21 rises, causing the shape memory metal 17 to extend. When the shape memory metal 17 extends, it causes the sliding column 2 18 to slide upward inside the fixed column 3 16. When the sliding column 2 18 slides upward, the fixed action of the sliding column 2 18 and the toothed plate 191 causes the toothed plate 191 to move upward, which in turn causes the gear 192, which is meshed with the tooth end, to rotate. When the gear 192 rotates, the fixed action of the gear 192 and the rotating roller 193 causes the rotating roller 193 to rotate, which in turn causes the stirring blade 194 to rotate inside the lower chamber 21, thereby agitating the water inside the lower chamber 21. This improves the uniformity of ultraviolet sterilization and disinfection while also increasing the sterilization and disinfection operation speed.

[0032] Workflow: When the pressure plate 7 pressurizes and filters the water to be purified in the upper chamber 20, it drives the sliding rod 101 to slide downward inside the fixed column 102, which in turn drives the fixed plate 103 to compress the air bag 104. The gas generated by the compressed air bag 104 is sent into the fixed column 121 through the air guide pipe 11, which further pushes the sliding column 122 to slide and stretches the elastic element 123. When the sliding column 122 slides, it drives the sliding plate 124 to slide inside the cylinder 3. When the hole opened inside the sliding plate 124 coincides with the through pipe 13, the external gas will enter the pressure plate 7 through the through pipe 13 and the hole, thereby achieving automatic balance of the air pressure above the pressure plate 7 and ensuring the stable operation of the pressurization filtration operation.

[0033] As the pressure plate 7 moves downward, it also drives the fixed frame 14 to move downward simultaneously, which in turn drives the threaded block 151 to slide downward along the outer wall of the ball screw 152, further driving the ball screw 152 to rotate. When the ball screw 152 rotates, it drives the cross plate 153 to rotate on the upper surface of the waterproof activated carbon filter plate 5, thereby achieving automatic cleaning of the waterproof activated carbon filter plate 5 during pressure filtration, avoiding large particles of impurities from clogging the filter holes and causing the filtration operation to be unstable.

[0034] When the ultraviolet disinfection lamp 9 sterilizes the water flowing into the lower chamber 21, the temperature inside the chamber rises, further causing the shape memory metal 17 to extend and drive the sliding column 18 to slide upward inside the fixed column 16. When the sliding column 18 slides upward, it drives the toothed plate 191 to move upward, which in turn drives the gear 192 to rotate. When the gear 192 rotates, it drives the rotating roller 193 to rotate, which in turn drives the stirring blade 194 to rotate inside the lower chamber 21, thereby agitating the water inside the lower chamber 21. This improves the uniformity of ultraviolet sterilization and also increases the sterilization rate.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating water purification device for masterbatch production, comprising an inlet pipe (1), characterized in that: A control valve (2) is installed in the middle of the water inlet pipe (1). A cylinder (3) is fixedly connected to the outer wall of the water inlet pipe (1). A water outlet pipe (4) is fixedly installed inside the cylinder (3). A waterproof activated carbon filter plate (5) is fixedly installed inside the cylinder (3). The waterproof activated carbon filter plate (5) divides the inside of the cylinder (3) into an upper chamber (20) and a lower chamber (21). An electric push rod (6) is fixedly installed on the inner top wall of the cylinder (3). A pressure plate (7) is fixedly installed at the drive end of the electric push rod (6). The outer wall of the pressure plate (7) is slidably connected to the inside of the cylinder (3). A power supply (8) is fixedly connected to the inner bottom wall of the water inlet pipe (1). An ultraviolet disinfection lamp (9) is installed on the upper surface of the power supply (8).

2. The circulating water purification device for masterbatch production according to claim 1, characterized in that: The upper surface of the pressure plate (7) is equipped with an air guiding assembly (10). The air guiding assembly (10) includes a fixed column (102). The top end of the fixed column (102) is fixedly connected to the inner top wall of the cylinder (3). An air guiding pipe (11) is fixedly installed inside the fixed column (102). A sliding assembly (12) is fixedly installed at the end of the air guiding pipe (11) away from the fixed column (102). The sliding assembly (12) includes a sliding plate (124). The outer wall of the sliding plate (124) is slidably connected to the inside of the cylinder (3). A through pipe (13) is slidably connected to the outer wall of the sliding plate (124). The outer wall of the through pipe (13) is fixedly connected to the inner top wall of the cylinder (3).

3. The circulating water purification device for masterbatch production according to claim 2, characterized in that: The air guiding assembly (10) also includes a sliding rod (101), the bottom end of which is fixedly connected to the upper surface of the pressure plate (7), the outer wall of which is slidably connected to the inside of the first fixed column (102), the outer wall of which is penetrated by an airbag (104), the airbag (104) is installed inside the first fixed column (102), the top end of which is fixedly connected to a fixed plate (103), the lower surface of which is attached to the top end of the airbag (104), the outer wall of which is slidably connected to the inside of the first fixed column (102), and the end of the air guiding tube (11) away from the electric push rod (6) is fixedly set inside the airbag (104).

4. The circulating water purification device for masterbatch production according to claim 2, characterized in that: The sliding assembly (12) also includes a second fixed column (121). The end of the air guide tube (11) away from the first fixed column (102) is fixedly disposed in the middle of the second fixed column (121). Multiple first sliding columns (122) are slidably connected inside the second fixed column (121). An elastic element (123) is fixedly disposed on the outer wall of the first sliding column (122). The end of the first sliding column (122) away from the first elastic element (123) is fixedly connected inside the sliding plate (124).

5. The circulating water purification device for masterbatch production according to claim 4, characterized in that: The sliding plate (124) has holes inside, and the size of the holes is adapted to the through pipe (13).

6. The circulating water purification device for masterbatch production according to claim 1, characterized in that: The lower surface of the pressure plate (7) is fixedly connected to a plurality of fixing brackets (14), and a rotating assembly (15) is installed on the lower surface of the fixing brackets (14). The rotating assembly (15) includes a cross plate (153), and the lower surface of the cross plate (153) is attached to the upper surface of the waterproof activated carbon filter plate (5).

7. The circulating water purification device for masterbatch production according to claim 6, characterized in that: The rotating assembly (15) also includes a threaded block (151), the upper surface of which is fixedly connected to the lower surface of the fixing frame (14), and a ball screw (152) is threadedly connected inside the threaded block (151). The top end of the ball screw (152) is rotatably connected to the inside of the pressure plate (7), and the bottom end of the ball screw (152) is fixedly connected to the inside of the cross plate (153).

8. The circulating water purification device for masterbatch production according to claim 1, characterized in that: The upper surface of the power supply (8) is fixedly connected with a plurality of fixed columns three (16), and a sliding column two (18) is slidably connected inside the fixed column three (16). A shape memory metal (17) is fixedly provided at the bottom end of the sliding column two (18), and the end of the shape memory metal (17) away from the sliding column two (18) is fixedly provided on the inner bottom wall of the fixed column three (16). A stirring assembly (19) is installed at the top of the sliding column two (18).

9. A circulating water purification device for masterbatch production according to claim 8, characterized in that: The stirring assembly (19) includes a toothed plate (191), the lower surface of which is fixedly connected to the top of the sliding column (18), the toothed end of which is meshed with a gear (192), a rotating roller (193) is fixedly connected inside the gear (192), the outer wall of the rotating roller (193) is rotatably connected to the inside of the cylinder (3), and a stirring blade (194) is fixedly connected to the outer wall of the rotating roller (193).

10. A circulating water purification device for masterbatch production according to claim 9, characterized in that: The stirring blade (194) has multiple holes evenly distributed inside to reduce the resistance of the stirring blade (194) to external water when it rotates.