Purification tank device for circulating water purification

Abstract

The present application relates to the technical field of wastewater treatment, and particularly relates to a purification tank device for circulating water purification, which effectively collects peeled dirt in the cleaning and pre-film process of a circulating water system through the synergistic effect of an inclined tank bottom, a sludge collecting structure, a filtering assembly, a stirring structure and a wall scraping structure, and discharges the dirt, reduces the risk of repeated circulation of the dirt in the circulating water system, causes the pipeline or device in the circulating water system to be blocked, simultaneously improves the dirt collection efficiency through optimized wall scraping operation, and the detachable and installable filtering assembly facilitates maintenance, so that the device can stably operate.

Description

Technical Field

[0001] This invention relates to the technical field of wastewater treatment, and more specifically to a purification tank device for circulating water purification. Background Technology

[0002] A purification tank is a water treatment structure that removes pollutants from water through physical, chemical, or biological processes to meet environmental protection requirements. It can be applied to circulating water systems. By adding chemicals to the purification tank as the circulating water flows through it, multiple indicators such as pH, turbidity, iron ions, and conductivity can be controlled, thereby stabilizing the quality of the circulating water and extending the overall service life of the circulating water system.

[0003] To ensure the normal operation of the circulating water system, regular maintenance of the purification tank and the circulating water system is necessary. Among these maintenance steps, pre-filming is a crucial part. Its core purpose is to form a protective film on the surfaces of various metal equipment and pipes within the purification tank and the circulating water system. This protects the equipment and pipes from corrosion and reduces scaling. In practice, operators introduce a specific pre-filming solution into the purification tank and circulate it throughout the purification tank and the circulating water system, thereby forming a uniform protective film on the metal surfaces.

[0004] During the pre-filming process of the purification tank and circulating water system, in order to facilitate the formation of the new protective film, it is necessary to first clean and peel off the old dirt. Usually, a stripping agent needs to be introduced into the circulating water system to remove dirt and other impurities, providing a clean foundation for the formation of the protective film. However, during the pre-filming cleaning and stripping operation, the dirt that is peeled off is difficult to dissolve quickly. This dirt is prone to repeated circulation in the purification tank and circulating water system with the water flow, causing blockages in the pipes or devices of the circulating water system. Therefore, we have optimized and improved the purification and cleaning process. Summary of the Invention

[0005] The present invention aims to provide a purification tank device for circulating water purification, which can reduce the risk of blockage caused by repeated circulation of dirt in the circulating water system during the cleaning and pre-filming process of the purification tank and the circulating water system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: 1) A purification tank device for circulating water purification, comprising a purification tank, an inlet pipe connected to the side of the top of the purification tank, the inlet pipe being connected to a circulating water system, a circulating water pump installed on the inlet pipe, a dosing pipe connected to the inlet pipe, a dosing tank connected to the dosing pipe, a metering pump installed on the dosing pipe, the bottom of the purification tank being inclined, several outlet pipes connected to the high end of the inclined direction of the bottom of the purification tank, the outlet pipes being connected to the circulating water system, a regulating valve and a filter assembly installed sequentially on the outlet pipes, the filter assembly being detachably installed on the outlet pipes, a sludge collection structure connected to the low end of the inclined direction of the bottom of the purification tank, a stirring structure for stirring the upper layer of the purification tank and a wall scraping structure for scraping the walls of the purification tank, and a drive structure for driving the stirring structure and the wall scraping structure.

[0007] In this invention, circulating water in the circulating water system flows into the purification tank from the inlet pipe and then flows back into the circulating water system from the outlet pipe of the purification tank, so that the circulating water continuously circulates in the circulating water system and the purification tank. During the cleaning and pre-filming process of the circulating water system, the stripping agent in the storage tank is introduced into the inlet pipe through the dosing pipe by starting the metering pump, so that it mixes with the circulating water and enters the purification tank. After flowing through the purification tank, it enters the circulating water system from the outlet pipe, so that the stripping agent circulates in the purification tank and the circulating water system, stripping the dirt in the purification tank and the circulating water system.

[0008] During the circulation of the stripping agent, the driving structure activates the stirring and scraping structures. The scraping structure scrapes the walls of the purification tank, aiding in the removal of scale. The stirring structure agitates the upper layer of circulating water, further mixing the stripping agent. Since the stirring structure only agitates the upper layer, the lower layer of circulating water remains relatively still, creating a settling layer conducive to scale settling. Furthermore, because the inlet pipe is located at the top and the outlet pipe at the bottom, the circulating water flows roughly from top to bottom. This causes the scale to settle downwards due to its own weight and the flow of the circulating water, eventually reaching the bottom of the purification tank.

[0009] Because the bottom of the purification tank is sloping, and the lower end of the sloping bottom is connected to a sludge collection structure, the dirt that settles to the bottom of the purification tank will flow towards the sludge collection structure along the sloping direction of the bottom of the purification tank until it is collected by the sludge collection structure. This part of the collected dirt is retained in the sludge collection structure, reducing the amount of dirt entering the outlet pipe. In addition, during the process of the wall scraping structure scraping the walls of the purification tank, the wall scraping structure can scrape across the bottom of the purification tank, reducing the amount of dirt deposited at the bottom of the purification tank, and helping the dirt at the bottom of the purification tank to enter the sludge collection structure for collection.

[0010] Because the outlet pipe is detachably equipped with a filter assembly and is located at the high end of the sloping bottom of the purification tank, most of the dirt in the purification tank can be collected by the sludge collection structure at the low end of the sloping bottom of the purification tank, while the other part of the dirt is intercepted by the filter assembly, preventing the circulating water from carrying the dirt in the purification tank into the circulating water system and causing blockage. Furthermore, since there are several outlet pipes connected to the bottom of the purification tank, the regulating valve of a single outlet pipe can be adjusted to close it, and the corresponding filter assembly can be replaced and cleaned, while the other outlet pipes can continue to output water as usual. During the water output process, the water output of the outlet pipe can be adjusted according to the actual situation through the regulating valve.

[0011] After the circulating water and stripping agent in the purification tank enter the circulating water system through the outlet pipe, the stripping agent in the circulating water can strip the dirt in the circulating water system. The dirt stripped from the circulating water system flows with the circulating water and enters the purification tank through the inlet pipe. After going through the above process, the dirt is collected in the sludge collection structure and intercepted by the filter components, reducing the risk of dirt entering the circulating water system and repeatedly circulating and causing blockage.

[0012] 2) The purification tank device for circulating water purification according to 1), wherein: The filtration assembly includes a filter tube body, which is detachably connected to and connected to an outlet pipe. Inside the filter tube body is a filter screen cylinder that houses the filter element. The filter screen cylinder has a replacement port for replacing the filter element. A cover is provided at the replacement port. The cover is detachably connected to the filter screen cylinder and is slidably sealed to the inner wall of the filter tube body. The cover has a water inlet for supplying water to the filter element. The assembly also includes a filter screen that is placed at the connection between the outlet pipe and the purification tank and is fixedly connected to the purification tank.

[0013] In this invention, during the process of circulating water in the purification tank entering the circulating water system from the outlet pipe, it first undergoes a first filtration through the filter screen at the connection between the outlet pipe and the purification tank to remove most of the dirt, then enters the filter tube body, enters the filter element through the water inlet, undergoes a second filtration through the filter element, and then enters the filter screen cylinder through the filter element for a third filtration. Through three filtrations to remove dirt, the risk of dirt entering the circulating water system and causing blockage is reduced.

[0014] When the filter assembly needs to be cleaned or replaced, first close the regulating valve of the corresponding outlet pipe of the filter assembly, then remove the filter tube body, take out the filter screen cylinder inside the filter tube body, then remove the cover body to replace the filter element and clean the filter screen cylinder, then install the cover body onto the filter screen cylinder that has been cleaned and the filter element replaced, install the filter screen cylinder back into the filter tube body, and then install the filter tube body into the outlet pipe, thereby reducing the reduction in filtration efficiency caused by dirt accumulation.

[0015] 3) The purification tank device for circulating water purification according to 1), wherein: The sludge collection structure includes a sludge collection trough located at the lower end of the bottom of the purification tank in an inclined direction. A mesh plate is installed at the opening of the sludge collection trough and is fixedly connected to the bottom of the purification tank. A sludge discharge pipe is connected to the bottom of the sludge collection trough, and a sludge discharge pump is installed on the sludge discharge pipe.

[0016] In this invention, because the bottom of the purification tank is inclined and the sludge collection trough is located at the lower end of the inclined direction of the bottom of the purification tank, the dirt that settles to the bottom of the purification tank will gather towards the sludge collection trough along the inclined direction of the bottom of the purification tank until it is collected by the sludge collection trough. This part of the collected dirt is retained in the sludge collection trough, reducing the dirt entering the outlet pipe. In addition, during the process of the wall scraping structure scraping the wall of the purification tank, the wall scraping structure can scrape across the bottom of the purification tank, reducing the amount of dirt deposited at the bottom of the purification tank and assisting the dirt at the bottom of the purification tank to enter the sludge collection trough for collection. At the same time, because a mesh plate is provided at the opening of the sludge collection trough, the mesh plate can reduce the disturbance of dirt in the sludge collection trough when the wall scraping structure scrapes across the bottom of the purification tank to a certain extent, so that the dirt can be deposited in the sludge trough. By periodically turning on the sludge discharge pump, the dirt in the sludge trough can be periodically discharged from the sludge discharge pipe.

[0017] 4) The purification tank device for circulating water purification according to 1), wherein: The wall scraping structure includes a telescopic tube that can extend and retract. A bottom scraper is hinged to the lower end of the telescopic tube. Two connecting rods are symmetrically fixed to the telescopic tube. A slider is fixedly connected to the other end of the connecting rod. A groove is opened on the inner side wall of the purification tank for the slider to move back and forth along the length of the purification tank. The slider is slidably connected to the groove. A side scraper is fixedly connected to the connecting rod. Several scraper strips are fixedly connected to the bottom scraper and the side scraper. The scraper strips on the bottom scraper are in contact with the bottom of the purification tank, and the scraper strips on the side scraper are in contact with the inner side wall of the purification tank. The driving structure is used to drive the telescopic tube to move back and forth along the length of the purification tank.

[0018] In this invention, a drive structure is activated to drive a telescopic pipe to reciprocate along the length of the purification tank. This telescopic pipe causes the bottom scraper, connecting rod, slider, and side scraper to move synchronously. The scraper blades on the side scraper scrape the inner wall of the purification tank, while the scraper blades on the bottom scraper scrape the bottom wall, thus improving the removal of dirt from the inner wall of the purification tank. Because the telescopic pipe is extendable and its lower end is hinged to the bottom scraper, the scraper blades on the bottom scraper can conform to the inclined bottom of the purification tank, enhancing the scraping effect on the bottom wall and drawing dirt from the bottom of the purification tank into the sludge collection trough for collection, reducing the amount of dirt deposited at the bottom of the purification tank.

[0019] 5) The purification tank device for circulating water purification according to 4), wherein: The telescopic fitting includes a telescopic housing, which is fixedly connected to a connecting rod. The lower end of the telescopic housing has a telescopic groove, and a telescopic rod passes through the telescopic groove. A first compression spring is fixedly connected between the upper end of the telescopic rod and the telescopic groove. The lower end of the telescopic rod is hinged to the bottom scraper. The driving structure is used to drive the telescopic housing to move back and forth along the length of the purification tank.

[0020] In this invention, the telescopic housing is driven to reciprocate along the length of the purification tank by activating the drive structure. This causes the telescopic housing, connecting rod, telescopic rod, and bottom scraper to move synchronously. The connecting rod drives the side scraper, and the scraper strips on the side scraper scrape the inner wall of the purification tank. Since a first compression spring is fixedly connected between the upper end of the telescopic rod and the telescopic groove, by keeping the first compression spring in a compressed state, a downward pressure can be provided to the telescopic rod, thereby providing a downward pressure to the bottom scraper. This allows the scraper strips on the bottom scraper to conform to the inclined bottom of the purification tank, improving the scraping effect on the bottom of the purification tank.

[0021] 6) A purification tank apparatus for circulating water purification according to any one of 3) and 5), wherein: The mesh panel has an upward tilting structure, and the tilting direction of the mesh panel is opposite to the tilting direction of the bottom of the purification tank. The upper end of the tilting direction of the mesh panel is higher than the upper end of the tilting direction of the bottom of the purification tank. A limit groove is opened on the telescopic rod, and a limit block is inserted into the limit groove. A second compression spring is fixedly connected between the limit block and the limit groove. A limit hole is opened on the telescopic housing for the limit block to pass through. A trigger rod that can be inserted into the limit hole is fixedly connected to the inner side wall of the purification tank. The trigger rod is located above the upper end of the tilting direction of the bottom of the purification tank.

[0022] In this invention, during the reciprocating movement of the telescopic shell, telescopic rod, and bottom scraper along the length of the purification tank, since the high end of the screen plate in the inclined direction is higher than the high end of the bottom of the purification tank in the inclined direction, when the bottom scraper moves to the high end of the screen plate in the inclined direction, the bottom scraper pushes the telescopic rod upward within the telescopic shell. When the limiting groove on the telescopic rod aligns with the limiting hole on the telescopic shell, the second compression spring, which is in a compressed state, stretches and ejects the limiting block from the limiting groove, allowing the limiting block to enter the limiting hole and fix the relative position of the telescopic rod and the telescopic shell. At this time, the position of the scraper on the bottom scraper is fixed at the height of the high end of the screen plate in the inclined direction, which is higher than the high end of the bottom of the purification tank in the inclined direction.

[0023] Because the scraper blades on the bottom scraper are fixed at a position higher than the bottom of the purification tank, when the telescopic housing, telescopic rod, and bottom scraper move towards the top of the bottom of the purification tank, the scraper blades on the bottom scraper do not contact the bottom of the purification tank and do not move the dirt at the bottom of the purification tank towards the top of the bottom of the purification tank. This continues until the telescopic rod and telescopic housing move to the top of the bottom of the purification tank, causing the trigger rod to insert into the limiting hole and push the limiting block from the limiting hole into the limiting groove. At this time, the second compression spring is compressed, and the first compression spring, which is in a compressed state, stretches and presses down the telescopic rod, thereby providing a downward pressure on the bottom scraper. This causes the scraper blades on the bottom scraper to come into contact with the bottom of the purification tank again. Then, as the telescopic housing, telescopic rod, and bottom scraper move towards the bottom of the purification tank, the dirt at the bottom of the purification tank is carried into the sludge tank and collected by the scraper blades on the bottom scraper.

[0024] In summary, during the reciprocating movement of the telescopic shell, telescopic rod, and bottom scraper along the length of the purification tank, when the bottom scraper moves towards the higher end of the inclined direction of the bottom of the purification tank, the bottom scraper does not contact the bottom of the purification tank and does not move the dirt at the bottom of the purification tank towards the higher end of the inclined direction. When the bottom scraper moves towards the lower end of the inclined direction of the bottom of the purification tank, the bottom scraper comes into contact with the bottom of the purification tank, causing the dirt at the bottom of the purification tank to enter the sludge tank for collection, thereby improving the efficiency of dirt collection in the sludge tank and enabling most of the dirt in the purification tank to be collected into the sludge tank.

[0025] 7) The purification tank device for circulating water purification according to 5), wherein: The drive structure includes a motor, the output shaft of which is fixedly connected to a reciprocating lead screw that passes through the purification tank. The reciprocating lead screw is rotatably connected to the purification tank, and a nut sleeve is screwed onto the reciprocating lead screw. The nut sleeve is fixedly connected to the upper end of the telescopic housing.

[0026] In this invention, after the motor is started, the motor drives the reciprocating screw to rotate, causing the nut sleeve to move back and forth along the length of the purification tank. The telescopic shell moves with the nut sleeve, thereby driving the bottom scraper, side scraper and scraper to move, scraping the inner wall of the purification tank and assisting the sludge tank in collecting dirt.

[0027] 8) The purification tank device for circulating water purification according to 7), wherein: The stirring structure includes two rotating rods symmetrically and rotatably connected to the nut sleeve. Several stirring plates are fixedly connected to the rotating rods. Long grooves are opened on both inner side walls of the purification tank. Two racks are symmetrically fixedly connected in the long grooves. Gears mesh between the two racks. The two gears are fixedly connected to the two rotating rods respectively.

[0028] In this invention, after the motor is started, as the nut sleeve moves back and forth along the length of the purification tank, the nut sleeve drives the rotating rod and gear to move. During the movement of the gear, the rack drives the gear to rotate, causing the rotating rod to rotate during the movement. This causes the stirring plate on the rotating rod to rotate during the movement, continuously stirring the circulating water in the upper layer of the circulation tank, so that the stripping agent and the circulating water are further mixed.

[0029] Compared with the prior art, the present invention also has the following technical effects: This invention provides a purification tank device for circulating water purification, which utilizes an inclined tank bottom structure, a sludge collection trough, and flexibly detachable filter components to construct a complete "sludge removal-collection-retention" system. During the cleaning and pre-filming process of the purification tank and circulating water system, a stripping agent is introduced into the inlet pipe by starting a metering pump, causing the circulating water and stripping agent to circulate within the purification tank and circulating water system. Simultaneously, the wall scraping structure within the purification tank moves back and forth under the drive structure, effectively removing the dirt accumulated on the tank walls and bottom, and pushing the dirt into the sludge collection trough, thus improving the dirt collection efficiency. The collected sludge can be periodically discharged by a sludge discharge pump, while the uncollected portion can be effectively retained by the filter components, reducing the risk of blockage caused by repeated circulation of dirt in the circulating water system.

[0030] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the purification tank device for circulating water purification according to the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of surface AA; Figure 3 for Figure 1 Schematic diagram of the structure of the middle BB surface; Figure 4 for Figure 1 Enlarged view of point C in the middle; Figure 5 This is a schematic diagram of the telescopic pipe component in the purification tank device for circulating water purification according to the present invention.

[0032] The reference numerals in the accompanying drawings of the instruction manual include: 1. Purification tank; 2. Inlet pipe; 3. Outlet pipe; 4. Regulating valve; 5. Bypass pipe; 6. Bypass valve; 7. Filter tube body; 8. Filter screen cylinder; 9. Filter element; 10. Cover body; 11. Limiting ring; 12. Water inlet; 13. Filter screen; 14. Sludge collection trough; 15. Mesh plate; 16. Sludge discharge pipe; 17. Motor; 18. Reciprocating screw; 19. Nut sleeve; 20. Rotating rod; 21. Stirring plate; 22. Rack; 23. Gear; 24. Telescopic housing; 25. Connecting rod; 26. Sliding block; 27. Slide groove; 28. Side scraper; 29. ​​Scraper; 30. Telescopic rod; 31. Bottom scraper; 32. First compression spring; 33. Second compression spring; 34. Limiting block; 35. Limiting hole; 36. Trigger rod. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0038] See the example. Figure 1 As shown, this embodiment is a purification tank 1 device for circulating water purification, including a purification tank 1. A water inlet pipe 2 is connected to the side of the top of the purification tank 1. The water inlet pipe 2 is connected to the circulating water system. A circulating water pump is connected to the flange on the water inlet pipe 2. A dosing pipe is connected to the water inlet pipe 2. A storage tank is connected to the dosing pipe. A metering pump is connected to the flange on the dosing pipe. The bottom of the purification tank 1 is inclined. Three water outlet pipes 3 are connected to the high end of the inclined direction of the bottom of the purification tank 1. A filter screen 13 is covered at the connection between the water outlet pipe 3 and the purification tank 1. The filter screen 13 is fixedly connected to the purification tank 1 by bolts and nuts. The water outlet pipes 3 are connected to the circulating water system. A regulating valve 4 and a filter pipe body 7 are connected to the water outlet pipes 3 in sequence by flanges. The water outlet pipe sections at both ends of the regulating valve 4 are connected through a bypass pipe 5. A bypass valve 6 is connected to the bypass pipe 5 by flanges.

[0039] See Figure 1 and Figure 4 As shown, the filter tube 7 contains a filter screen cylinder 8 for accommodating the filter element 9. The filter screen cylinder 8 has a replacement port for replacing the filter element 9. A cover 10 is threaded onto the replacement port. The cover 10 has a water inlet 12 for supplying water to the filter element 9. The cover 10 can be fitted with the inner wall of the filter tube 7 with a clearance fit. An annular groove is formed on the circumference of the cover 10. A sealing ring is embedded in the annular groove to allow the cover 10 to slide and seal against the inner wall of the filter tube 7. A limiting ring 11 is welded to the inner wall of the filter tube 7. The limiting ring 11 is located near the end of the filter tube 7 facing the regulating valve. The limiting ring 11 has a circular structure. The diameter of the cover 10 is larger than the diameter of the inner ring of the limiting ring 11, and the diameter of the inner ring of the limiting ring 11 is larger than the diameter of the filter screen cylinder 8. This allows the filter screen cylinder 8 to pass through the inner ring of the limiting ring 11 and be inserted into the filter tube 7 during the installation of the filter screen cylinder 8 and the cover 10, until the cover 10 is blocked by the limiting ring 11 and can no longer slide into the filter tube 7. This restricts the position of the cover 10 and the filter screen cylinder 8 and prevents the cover 10 and the filter screen cylinder 8 from sliding out of the filter tube 7 due to the push of the circulating water during the operation of the device.

[0040] See Figure 1 As shown, a sludge collection trough 14 is opened at the lower end of the bottom of the purification tank 1 in an inclined direction. A mesh plate 15 is covered at the opening of the sludge collection trough 14. The mesh plate 15 has an upward inclined structure. The inclined direction of the mesh plate 15 is opposite to the inclined direction of the bottom of the purification tank 1. The upper end of the inclined direction of the mesh plate 15 is higher than the upper end of the inclined direction of the bottom of the purification tank 1. The mesh plate 15 is fixedly connected to the bottom of the purification tank 1 by bolts and nuts. A sludge discharge pipe 16 is connected to the bottom of the sludge collection trough 14. A sludge discharge pump is connected to the flange on the sludge discharge pipe 16.

[0041] See Figure 1 and Figure 2As shown, a motor 17 is fixedly installed on the outside of the purification tank 1 by bolts and nuts. The output shaft of the motor 17 is fixedly connected to a reciprocating screw 18 that passes through the purification tank 1 by bolts and nuts. The reciprocating screw 18 is close to the top of the purification tank 1 and is rotatably connected to the purification tank 1 by bearings. A nut sleeve 19 is screwed onto the reciprocating screw 18. Two rotating rods 20 are symmetrically connected to the nut sleeve 19. The rotating rods 20 are rotatably connected to the nut sleeve 19 by bearings. A stirring plate 21 is welded onto the rotating rods 20. Long grooves are opened on both inner sidewalls of the purification tank 1. Two racks 22 are symmetrically welded into the long grooves. Gears 23 mesh between the two racks 22. The two gears 23 are respectively keyed to the two rotating rods 20.

[0042] See Figure 1 , Figure 3 and Figure 5 As shown, the bottom of the nut sleeve 19 is fixedly connected to a telescopic housing 24 by bolts and nuts. Two connecting rods 25 are symmetrically welded to the telescopic housing 24. A slider 26 is welded to the other end of the connecting rod 25. A groove 27 is opened on the inner side wall of the purification tank 1 for the slider 26 to move back and forth along the length of the purification tank 1. The slider 26 is slidably connected to the groove 27. A side scraper 28 is welded to the connecting rod 25. A telescopic groove is opened at the lower end of the telescopic housing 24. A telescopic rod 30 is provided in the telescopic groove. A first compression spring 32 is welded between the upper end of the telescopic rod 30 and the telescopic groove. A limit groove is opened on the telescopic rod 30. A limit block 3 is provided in the limit groove. 4. A second compression spring 33 is welded between the limiting block 34 and the limiting groove. A limiting hole 35 is opened on the telescopic housing 24 for the limiting block 34 to pass through. A trigger rod 36 that can be inserted into the limiting hole 35 is fixedly connected to the inner wall of the purification pool 1 by bolts and nuts. The trigger rod 36 is located above the high end of the bottom of the purification pool 1 in the inclined direction. The lower end of the telescopic rod 30 is hinged to the bottom scraper 31 by a ball joint. The side scraper 28 and the bottom scraper 31 are respectively opened with several installation grooves. The scraper strips 29 are embedded in the installation grooves. The scraper strips 29 on the side scraper 28 are in contact with the inner wall of the purification pool 1, and the scraper strips 29 on the bottom scraper 31 are in contact with the bottom of the purification pool 1.

[0043] In this embodiment, the circulating water in the circulating water system flows into the purification tank 1 from the inlet pipe 2, and then flows back into the circulating water system from the outlet pipe 3 of the purification tank 1, so that the circulating water continuously circulates in the circulating water system and the purification tank 1. During the cleaning and pre-filming process of the circulating water system, the stripping agent in the storage tank is introduced into the inlet pipe 2 through the dosing pipe by starting the metering pump, so that it mixes with the circulating water and enters the purification tank 1. After flowing through the purification tank 1, it enters the circulating water system from the outlet pipe 3, so that the stripping agent circulates in the purification tank 1 and the circulating water system, stripping the dirt in the purification tank 1 and the circulating water system.

[0044] When the circulating water and stripping agent begin to circulate, the motor 17 drives the reciprocating screw 18 to rotate, causing the nut sleeve 19 to drive the rotating rod 20, the stirring plate 21 and the gear 23 to move back and forth along the length of the purification tank 1. During the movement of the gear 23, the rack 22 drives the gear 23 to rotate, thereby causing the rotating rod 20 and the stirring plate 21 to rotate, continuously stirring the circulating water in the upper layer of the circulating tank, so that the stripping agent and the circulating water are further mixed.

[0045] Since the stirring plate 21 only stirs the circulating water in the upper layer of the purification tank 1, the circulating water in the lower layer of the purification tank 1 is relatively still compared with the circulating water in the upper layer, so that a settling layer is formed in the lower layer of the purification tank 1, which is conducive to the settling of dirt. At the same time, since the water inlet pipe 2 of the purification tank 1 is located on its top side and the water outlet pipe 3 of the purification tank 1 is located at its bottom, the circulating water in the purification tank 1 flows roughly from top to bottom, so that the dirt detached from the purification tank 1 can sink to the settling layer by its own weight and with the flow of circulating water, until it sinks to the bottom of the purification tank 1. Since the bottom of the purification tank 1 is inclined, and a sludge collection trough 14 is opened at the lower end of the inclined direction of the bottom of the purification tank 1, the dirt that sinks to the bottom of the purification tank 1 will collect in the sludge collection trough 14 along the inclined direction of the bottom of the purification tank 1 until it is collected by the sludge collection trough 14. This part of the collected dirt is retained in the sludge collection trough 14, reducing the dirt entering the water outlet pipe 3. By periodically turning on the sludge discharge pump, the dirt in the sludge tank can be periodically discharged from the sludge discharge pipe 16.

[0046] Simultaneously, the nut sleeve 19 also drives the telescopic housing 24, telescopic rod 30, bottom scraper 31, connecting rod 25, slider 26, and side scraper 28 to reciprocate along the length of the purification tank 1, causing the scraper strips 29 on the side scraper 28 to scrape the inner wall of the purification tank 1, and the scraper strips 29 on the bottom scraper 31 to scrape the bottom of the purification tank 1, thereby improving the removal effect of dirt from the inner wall of the purification tank 1. Since the upper end of the telescopic rod 30 is fixedly connected to the telescopic groove with a first compression spring 32, by making the first compression spring 32... Spring 32 is always in a compressed state, which can provide a downward pressure on telescopic rod 30, thereby providing a downward pressure on bottom scraper 31. This allows the scraper strip 29 on bottom scraper 31 to fit against the inclined bottom of purification tank 1, improving the scraping effect on the bottom of purification tank 1. It can also carry the dirt at the bottom of purification tank 1 into the sludge collection tank 14 for collection, reducing the amount of dirt deposited at the bottom of purification tank 1. It can also scrape through the filter screen 13 at the bottom of purification tank 1, cleaning the filter screen 13 and improving the filtration efficiency.

[0047] During the reciprocating movement of the bottom scraper 31 along the length of the purification tank 1, since the high end of the inclined direction of the mesh plate 15 is higher than the high end of the inclined direction of the bottom of the purification tank 1, when the bottom scraper 31 moves to the high end of the inclined direction of the mesh plate 15, the bottom scraper 31 pushes the telescopic rod 30 to move upward within the telescopic housing 24. When the limiting groove on the telescopic rod 30 aligns with the limiting hole 35 on the telescopic housing 24, the second compression spring 33, which is in a compressed state, stretches and ejects the limiting block 34 from the limiting groove, so that the limiting block 34 enters the limiting hole 35 to fix the relative position of the telescopic rod 30 and the telescopic housing 24. At this time, the positions of the bottom scraper 31 and the scraper strip 29 on the bottom scraper 31 are both higher than the high end of the inclined direction of the bottom of the purification tank 1.

[0048] Since the bottom scraper 31 and the scraper strip 29 on the bottom scraper 31 are both positioned higher than the upper end of the bottom slope direction of the purification tank 1, when the bottom scraper 31 moves further towards the upper end of the bottom slope direction of the purification tank 1, the scraper strip 29 on the bottom scraper 31 does not contact the bottom of the purification tank 1 and does not move the dirt at the bottom of the purification tank 1 towards the upper end of the bottom slope direction of the purification tank 1, until the telescopic rod 30 and the telescopic housing 24 move to the upper end of the bottom slope direction of the purification tank 1, causing the trigger rod 36 to insert into the limiting hole 35, and pushing the limiting block 34 from the limiting hole 35 into the limiting position. When the second compression spring 33 is compressed, the first compression spring 32, which is in a compressed state, stretches and presses down the telescopic rod 30, thereby providing a downward pressure on the bottom scraper 31. This causes the scraper strip 29 on the bottom scraper 31 to come into contact with the bottom of the purification tank 1 again. As the bottom scraper 31 moves towards the lower end of the bottom of the purification tank 1 in an inclined direction, the scraper strip 29 on the bottom scraper 31 carries the dirt at the bottom of the purification tank 1 into the sludge tank for collection, thereby improving the efficiency of the sludge tank in collecting dirt and allowing most of the dirt in the purification tank 1 to be collected into the sludge tank.

[0049] During the process of circulating water and stripping agent entering the circulating water system from the outlet pipe 3 in the purification tank 1, since the outlet pipe 3 is located at the high end of the inclined direction at the bottom of the purification tank 1, most of the dirt in the purification tank 1 can be collected by the sludge collection structure at the low end of the inclined direction at the bottom of the purification tank 1. The other part of the dirt first undergoes the first filtration through the filter screen 13 at the connection between the outlet pipe 3 and the purification tank 1, which intercepts large particles of dirt. Then it enters the filter tube 7 and enters the filter element 9 through the water inlet 12. It undergoes the second filtration through the filter element 9, and then enters the filter screen cylinder 8 through the filter element 9 for the third filtration. This avoids dirt from entering the circulating water system and causing blockage, thus reducing the risk of dirt entering the circulating water system and causing blockage.

[0050] After the circulating water and stripping agent in the purification tank 1 enter the circulating water system through the outlet pipe 3, the stripping agent in the circulating water can strip the dirt in the circulating water system. The dirt stripped from the circulating water system flows with the circulating water and enters the purification tank 1 through the inlet pipe 2. After the above process, the dirt is collected in the sludge collection tank 14, and the dirt is intercepted by the filter screen 13, filter element 9 and filter screen cylinder 8, reducing the risk of dirt entering the circulating water system and causing blockage due to repeated circulation.

[0051] In actual operation, since the bottom of the purification tank 1 is connected to three outlet pipes 3, the regulating valve 4 of a single outlet pipe 3 can be adjusted to close it for maintenance and cleaning, while the other outlet pipes 3 continue to discharge water normally. During the discharge of water from the outlet pipes 3, the regulating valve 4 can adjust the water flow rate of the outlet pipes 3 according to the actual situation. During normal operation of the regulating valve 4, the bypass valve 6 is generally closed. However, when the regulating valve 4 malfunctions, the bypass valve 6, in conjunction with the bypass pipe 5, can be activated to allow the outlet pipes 3 to continue discharging water, improving the stability of the device operation. Alternatively, when the water flow rate is low, the bypass valve 6, in conjunction with the bypass pipe 5, can provide more precise flow control.

[0052] When it is necessary to clean and replace the filter cylinder 8 and filter element 9, first close the regulating valve 4 of the corresponding water outlet pipe 3, then remove the filter tube body 7, take out the filter cylinder 8 inside the filter tube body 7, then unscrew the cover 10 to replace the filter element 9 and clean the filter cylinder 8, then install the cover 10 onto the filter cylinder 8 after cleaning and filter element 9 replacement, insert the filter cylinder 8 through the inner ring of the limiting ring 11 into the filter tube body 7 until the cover 10 and the limiting ring 10 fit together, then connect the flange of the filter tube body 7 to the water outlet pipe 3 to complete the installation. This makes it easier to replace the filter element 9 and clean the filter cylinder 8, reducing the reduction in filtration efficiency caused by dirt accumulation.

[0053] The above are merely embodiments of the present invention. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this invention. These modifications and improvements should also be considered within the scope of protection of this invention, and will not affect the effectiveness of the implementation of this invention or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A purification tank device for circulating water purification, comprising a purification tank, wherein an inlet pipe is connected to the side of the top of the purification tank, the inlet pipe is connected to a circulating water system, a circulating water pump is installed on the inlet pipe, a dosing pipe is connected to the inlet pipe, a dosing tank is connected to the dosing pipe, and a metering pump is installed on the dosing pipe, characterized in that, The bottom of the purification tank is inclined, and several water outlet pipes are connected to the high end of the inclined direction of the bottom of the purification tank. The water outlet pipes are connected to the circulating water system. A regulating valve and a filter assembly are installed sequentially on the water outlet pipes. The filter assembly is detachably installed on the water outlet pipe. A sludge collection structure for collecting dirt is connected to the low end of the inclined direction of the bottom of the purification tank. The purification tank is equipped with a stirring structure for stirring the upper layer of the purification tank and a wall scraping structure for scraping the walls of the purification tank. It also includes a drive structure for driving the stirring structure and the wall scraping structure.

2. The purification tank device for circulating water purification according to claim 1, characterized in that: The filtration assembly includes a filter tube body, which is detachably connected to and communicates with an outlet pipe. The filter tube body is provided with a filter screen cylinder that accommodates a filter element. The filter screen cylinder has a replacement port for replacing the filter element. A cover is provided at the replacement port. The cover is detachably connected to the filter screen cylinder and is slidably sealed to the inner wall of the filter tube body. The cover has a water inlet for supplying water to the filter element. The assembly also includes a filter screen placed at the connection between the outlet pipe and the purification tank. The filter screen is fixedly connected to the purification tank.

3. The purification tank device for circulating water purification according to claim 1, characterized in that: The sludge collection structure includes a sludge collection trough located at the lower end of the bottom of the purification tank in an inclined direction. A mesh plate is provided at the opening of the sludge collection trough and is fixedly connected to the bottom of the purification tank. A sludge discharge pipe is connected to the bottom of the sludge collection trough and a sludge discharge pump is installed on the sludge discharge pipe.

4. The purification tank device for circulating water purification according to claim 1, characterized in that: The wall-scraping structure includes a telescopic tube that can extend and retract. A bottom scraper is hinged to the lower end of the telescopic tube. Two connecting rods are symmetrically fixed to the telescopic tube. A slider is fixedly connected to the other end of each connecting rod. A groove is opened on the inner side wall of the purification tank for the slider to reciprocate along the length of the purification tank. The slider is slidably connected to the groove. A side scraper is fixedly connected to the connecting rod. Several scraping strips are fixedly connected to the bottom scraper and the side scraper respectively. The scraping strips on the bottom scraper are in contact with the bottom of the purification tank, and the scraping strips on the side scrapers are in contact with the inner side wall of the purification tank. The driving structure is used to drive the telescopic tube to reciprocate along the length of the purification tank.

5. The purification tank device for circulating water purification according to claim 4, characterized in that: The telescopic fitting includes a telescopic housing, which is fixedly connected to a connecting rod. The lower end of the telescopic housing has a telescopic groove, and a telescopic rod passes through the telescopic groove. A first compression spring is fixedly connected between the upper end of the telescopic rod and the telescopic groove. The lower end of the telescopic rod is hinged to a bottom scraper. The driving structure is used to drive the telescopic housing to reciprocate along the length of the purification tank.

6. The purification tank apparatus for circulating water purification according to any one of claims 3 and 5, characterized in that: The mesh plate has an upwardly inclined structure, and the inclination direction of the mesh plate is opposite to the inclination direction of the bottom of the purification tank. The upper end of the inclination direction of the mesh plate is higher than the upper end of the inclination direction of the bottom of the purification tank. The telescopic rod has a limit groove, and a limit block passes through the limit groove. A second compression spring is fixedly connected between the limit block and the limit groove. The telescopic housing has a limit hole for the limit block to pass through. A trigger rod that can be inserted into the limit hole is fixedly connected to the inner wall of the purification tank. The trigger rod is located above the upper end of the inclination direction of the bottom of the purification tank.

7. The purification tank device for circulating water purification according to claim 5, characterized in that: The drive structure includes a motor, the output shaft of which is fixedly connected to a reciprocating lead screw that passes through the purification tank. The reciprocating lead screw is rotatably connected to the purification tank. A nut sleeve is screwed onto the reciprocating lead screw, and the nut sleeve is fixedly connected to the upper end of the telescopic housing.

8. The purification tank device for circulating water purification according to claim 7, characterized in that: The stirring structure includes two rotating rods symmetrically and rotatably connected to a nut sleeve. Several stirring plates are fixedly connected to the rotating rods. Long grooves are opened on both inner sidewalls of the purification tank. Two racks are symmetrically fixedly connected in the long grooves. Gears mesh between the two racks. The two gears are fixedly connected to the two rotating rods respectively.

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