Waste plastic cleaning wastewater treatment system

Abstract

The invention belongs to the technical field of wastewater treatment systems, and discloses a waste plastic cleaning wastewater treatment system which comprises a shell with a liquid inlet pipe and a liquid outlet pipe, a filtering unit and a stirring unit are arranged in the shell, a storage box is fixed in the shell, and the filtering unit comprises a frame, two annular plates with side holes, a barrel, a plurality of scraping plates with filtering holes and a power part. The two annular plates are fixed to the shell through the frame, the barrel is rotationally arranged between the two annular plates, the multiple scraping plates are fixed to the outer wall of the barrel, the power pieces are fixed to the corresponding annular plates and used for driving the barrel to rotate, and water filtering grooves are formed between the adjacent scraping plates and the two annular plates. In the working state, the liquid inlet pipe is located above the barrel, waste water with foreign matter in the liquid inlet pipe falls into the water filtering groove for water filtering, and the foreign matter generated by water filtering is transferred into the storage box after rotating along with the barrel. According to the device disclosed by the invention, foreign matters in the wastewater can be continuously transferred into the storage tank, and part of flocculates generated in the wastewater can be fished up through the filtering unit.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment systems, in particular to a waste plastics washing wastewater treatment system. Background Art

[0002] In the process of treating waste plastics, it is necessary to flush the surface with water to remove foreign matter on the surface of the waste plastics. After cleaning, a large amount of wastewater will be generated. There are some foreign matter in the wastewater, which needs to be treated. The conventional method is to filter the foreign matter through a filter. However, after a long period of use, a lot of foreign matter accumulates on the filter. Therefore, the filter needs to be replaced or cleaned regularly to ensure the use effect of the filter. This method is undoubtedly more cumbersome, so this technical problem needs to be solved. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a waste plastic cleaning wastewater treatment system, which effectively solves the problem of filtering foreign matter through a filter screen. However, after long-term use, a large amount of foreign matter accumulates on the filter screen, so the filter screen needs to be replaced or cleaned regularly to ensure the use effect of the filter screen. This method is undoubtedly more cumbersome.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a wastewater treatment system for washing waste plastics, comprising a housing having a liquid inlet pipe and a liquid outlet pipe, wherein a filter unit and a stirring unit are provided in the housing and a storage box is fixed therein, wherein the filter unit comprises a frame, two annular plates with side holes, a cylinder, a plurality of scrapers with filter holes, and a power member, wherein the two annular plates are fixed to the housing through the frame, the cylinder is rotatably disposed between the two annular plates, the plurality of scrapers are fixed to the outer wall of the cylinder, the power member is fixed to the corresponding annular plates and is used to drive the cylinder to rotate, and a filter trough is formed between adjacent scrapers and the two annular plates; In the working state, the liquid inlet pipe is located above the cylinder, and the wastewater with foreign matter in the liquid inlet pipe falls into the filter tank for filtration. The foreign matter generated by the filtration is transferred to the storage box after the cylinder rotates.

[0005] Preferably, the cylinder is partially placed in the wastewater, and the scraper rotates with the cylinder to transfer foreign matter in the wastewater into the filter tank.

[0006] Preferably, the power component includes a power motor, a driving gear and a driven ring gear, the power motor is fixed to the corresponding ring plate, the driving gear is fixed to the output shaft of the power motor, the driving gear is meshed with the driven ring gear, and the driven ring gear is fixed to the inner wall of the cylinder.

[0007] Preferably, an auxiliary blowing mechanism is provided on the cylinder, and the auxiliary blowing mechanism includes an external pump body and an inner box body. A connecting hole is formed on the cylinder, a stepped portion is formed on the scraper, and an auxiliary blowing hole is provided on the stepped portion. The external pump body and the inner box body are both fixed on corresponding ring plates, the external pump body is connected with the inner box body, the inner box body and the cylinder body are slidingly sealed, and the inner box body is connected with the auxiliary blowing hole through the connecting hole.

[0008] Preferably, the stirring unit includes a stirring motor, a stirring shaft, and stirring blades. The stirring motor is fixed to the housing. The stirring shaft is rotatably arranged in the housing and fixed to the output shaft of the stirring motor. The stirring blades are fixed to the stirring shaft.

[0009] Preferably, an upper cavity and a lower cavity are formed in the shell by a fixed partition, and the filtering unit and the stirring unit are both located in the upper cavity; a transmission box is fixed on the partition, and at least one magnetic cleaning plate is hingedly provided on the transmission box, and a horizontal torsion spring is provided at the hinge between the cleaning plate and the transmission box.

[0010] Preferably, the partition is provided with a discharge port, a magnetic sealing plate is slidably provided in the discharge port, the sealing plate and the cleaning plate are magnetically repelled, and the sealing plate is fixed to the partition by symmetrically arranged elastic parts.

[0011] Preferably, the partition is provided with an installation port, in which a filter is fixed. The partition and the filter are both made of plastic. A brush is hinged on the partition, and the brush is magnetically attracted to the sealing plate. A vertical torsion spring is provided at the hinge between the brush and the partition.

[0012] Preferably, the transmission box includes a lower box body, an upper box body, a transmission gear and a transmission ring gear. The lower box body is fixed on the partition, the upper box body and the lower box body are rotatably matched, and the cleaning plate is located on the upper box body. A large gear is fixed on the stirring shaft, and the large gear is engaged with the transmission ring gear through the transmission gear. The transmission gear is rotatably arranged in the lower box body, and the transmission ring gear is fixed in the upper box body; and the rod hole on the upper box body is sealed and rotatably matched with the stirring shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. During operation, the filter unit can continuously transfer foreign matter in the wastewater to the storage tank during the filtering process, so there is no need to clean the filter unit frequently; and part of the flocs generated in the wastewater can be picked up by the filter unit to speed up the separation process of the flocs.

[0014] 2. During operation, through the cooperation of the cleaning plate and the sealing plate, the opening and closing of the discharge port can be controlled by the cleaning plate during the rotation of the cleaning plate, and the flocs can be transferred through the discharge port, thereby realizing the separation process of the flocs in the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached figure: Figure 1 This is a schematic diagram of the structure of the waste plastic cleaning wastewater treatment system of the present invention; Figure 2 This is the second structural diagram of the waste plastic washing wastewater treatment system of the present invention; Figure 3 Schematic diagram of the internal structure of the housing of the present invention; Figure 4 This is one of the structural schematic diagrams of the stirring unit of the present invention; Figure 5 This is the second structural diagram of the stirring unit of the present invention; Figure 6 This is a schematic diagram of the cleaning plate installation structure of the present invention; Figure 7 For the present invention Figure 6 A in the middle is an enlarged structural diagram; Figure 8 Schematic diagram of the filter unit structure of the present invention; Figure 9 This is a schematic cross-sectional view of the filter unit of the present invention; Figure 10 It is a schematic diagram of the internal structure of the cylinder of the present invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point B in the middle.

[0017] In the figure: 1. Shell; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Storage box; 5. Frame; 6. Ring plate; 7. Side hole; 8. Cylinder; 9. Scraper; 10. Filter hole; 11. Water filter trough; 12. Power motor; 13. Driving gear; 14. Driven ring gear; 15. Inner box; 16. Connecting hole; 17. Step; 18. Auxiliary blowing hole; 19. Stirring motor; 20. Stirring shaft; 21. Stirring blade; 22. Partition; 23. Upper cavity; 24. Lower cavity; 25. Transmission box; 26. Cleaning plate; 27. Discharge port; 28. Sealing plate; 29. ​​Installation port; 30. Filter screen; 31. Scrub brush; 32. Lower box; 33. Upper box; 34. Transmission gear; 35. Transmission ring gear; 36. Large gear. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] In the process of treating waste plastics, it is necessary to flush the surface with water to remove foreign matter on the surface of the waste plastics. After cleaning, a large amount of wastewater will be generated. There are some foreign matter in the wastewater, which needs to be treated. The conventional method is to filter the foreign matter through a filter. However, after a long period of use, a lot of foreign matter accumulates on the filter. Therefore, the filter needs to be replaced or cleaned regularly to ensure the use effect of the filter. This method is undoubtedly more cumbersome, so this technical problem needs to be solved.

[0020] Depend on Figures 1-11 The present invention relates to a waste water treatment system for washing waste plastics, comprising a housing 1 having a liquid inlet pipe 2 and a liquid outlet pipe 3, wherein a filter unit and a stirring unit are provided in the housing 1 and a storage box 4 is fixed therein, wherein the filter unit comprises a frame 5, two ring plates 6 with side holes 7, a cylinder 8, a plurality of scrapers 9 with filter holes 10 and a power member, wherein the two ring plates 6 are fixed to the housing 1 through the frame 5, the cylinder 8 is rotatably arranged between the two ring plates 6, the plurality of scrapers 9 are fixed to the outer wall of the cylinder 8, the power member is fixed to the corresponding ring plates 6 and is used to drive the cylinder 8 to rotate, and a filter trough 11 is formed between adjacent scrapers 9 and the two ring plates 6; In the working state, the liquid inlet pipe 2 is located above the cylinder 8, and the wastewater with foreign matter in the liquid inlet pipe 2 falls into the water filter 11 for filtration. The foreign matter generated by the filtration is transferred to the storage box 4 after the cylinder 8 rotates.

[0021] With this design, when in use, wastewater is transported to the interior of the shell 1 through the liquid inlet pipe 2, filtered through the filter unit, and then flocculant is added to the interior of the shell 1 to cause a reaction in the wastewater to produce flocs, thereby achieving wastewater treatment.

[0022] The specific working process of the filtration unit is as follows: When the wastewater falls into the water filter trough 11 through the liquid inlet pipe 2, the water in the wastewater is discharged into the interior of the shell 1 through the filter holes 10 on the scraper 9 and the side holes 7 on the ring plate 6, and the foreign matter in the wastewater remains in the water filter trough 11. The cylinder 8 is then driven to rotate by the power piece, and the cylinder 8 drives the water filter trough 11 to rotate. When the water filter trough 11 is tilted and approaches the storage box 4, the foreign matter in the water filter trough 11 falls into the interior of the storage box 4 along the outer wall of the tilted scraper 9 for storage; as the cylinder 8 rotates, when the scraper 9 enters the wastewater in the shell 1, the flocs generated in the wastewater can be shoveled up by the scraper 9, and then finally transferred to the interior of the storage box 4 after the movement of the cylinder 8; wherein the cylinder 8 is partially placed in the wastewater, and the scraper 9 rotates with the cylinder 8 to transfer the foreign matter in the wastewater to the water filter trough 11.

[0023] It should be noted that a circular hole can be opened on the bottom wall of the storage box 4 to facilitate drainage. At the same time, a pipe with a valve can be connected to the bottom of the storage box 4 according to actual needs, and a pipe hole can be provided on the shell 1 to facilitate the discharge of foreign matter or flocculants in the storage box 4 out of the shell 1 through the pipe.

[0024] Specifically, the power parts include a power motor 12, a driving gear 13 and a driven ring gear 14. The power motor 12 is fixed on the corresponding ring plate 6, the driving gear 13 is fixed on the output shaft of the power motor 12, the driving gear 13 is engaged with the driven ring gear 14, and the driven ring gear 14 is fixed to the inner wall of the cylinder 8.

[0025] With this design, the power motor 12 drives the driving gear 13 to rotate, and the driving gear 13 drives the cylinder 8 to rotate through the driven ring gear 14, thereby realizing the driving process of the cylinder 8.

[0026] Taking into account that some foreign matter in the water filter trough 11 may adhere to the scraper 9, in order to further improve the cleaning effect of foreign matter, an auxiliary blowing mechanism is provided on the cylinder 8, the auxiliary blowing mechanism includes an external pump body and an inner box body 15, a connecting hole 16 is formed on the cylinder 8, a step portion 17 is formed on the scraper 9, and an auxiliary blowing hole 18 is provided on the step portion 17. The external pump body and the inner box body 15 are both fixed on the corresponding ring plate 6, the external pump body is connected to the inner box body 15, the inner box body 15 is in sliding and sealing cooperation with the cylinder 8, and the inner box body 15 is connected to the auxiliary blowing hole 18 through the connecting hole 16.

[0027] In this design, air is drawn into the inner box 15 through an external pump body to accumulate pressure. When the connecting hole 16 on the cylinder 8 is aligned with the inner box 15, the air in the inner box 15 can enter the auxiliary blowing hole 18 through the connecting hole 16. The air flow generated by the auxiliary blowing hole 18 impacts the foreign matter on the surface of the scraper 9, so that the foreign matter enters the interior of the storage box 4 along the scraper 9.

[0028] Taking into account that it takes a certain amount of time for the flocculant to diffuse after being added to the shell 1, in order to further improve the diffusion rate of the flocculant, the stirring unit includes a stirring motor 19, a stirring shaft 20, and a stirring blade 21. The stirring motor 19 is fixed on the shell 1, the stirring shaft 20 is rotatably arranged in the shell 1 and is fixed to the output shaft of the stirring motor 19, and the stirring blade 21 is fixed on the stirring shaft 20.

[0029] In this design, the stirring motor 19 drives the stirring shaft 20 to rotate, and the stirring shaft 20 drives the stirring blades 21 thereon to stir the wastewater, thereby accelerating the diffusion rate of the flocculant.

[0030] Taking into account that the flocculants produced after the reaction of the flocculant are partially accumulated inside the shell 1, in order to facilitate their treatment, an upper cavity 23 and a lower cavity 24 are formed in the shell 1 by a fixed partition 22, and the filtration unit and the stirring unit are both located in the upper cavity 23; a transmission box 25 is fixed on the partition 22, and at least one magnetic cleaning plate 26 is hingedly provided on the transmission box 25, and a horizontal torsion spring is provided at the hinge between the cleaning plate 26 and the transmission box 25.

[0031] The partition 22 is provided with a discharge port 27 , in which a magnetic sealing plate 28 is slidably provided. The sealing plate 28 and the cleaning plate 26 are magnetically repelled and matched. The sealing plate 28 is fixed to the partition 22 by symmetrically arranged elastic members.

[0032] With this design, the stirring shaft 20 drives the cleaning plate 26 to move through the transmission box 25. The cleaning plate 26 pushes the flocculants in the upper cavity 23 during the movement. When the cleaning plate 26 approaches the discharge port 27, under the magnetic repulsion between the sealing plate 28 and the cleaning plate 26, the sealing plate 28 moves down and no longer blocks the discharge port 27. At this time, the cleaning plate 26 can push the flocculants into the interior of the lower cavity 24 through the discharge port 27. When the cleaning plate 26 finally leaves the sealing plate 28, under the action of the elastic member, the sealing plate 28 blocks the discharge port 27 again. The cyclic action can transfer the sediment in the upper cavity 23 to the lower cavity 24.

[0033] It should be noted that the elastic member adopts a telescopic spring; and when the cleaning plate 26 passes through the discharge port 27, under the action of the horizontal torsion spring, the cleaning plate 26 will flip at a small angle and enter the interior of the discharge port 27, and the cleaning plate 26 will be scraped through the edge of the discharge port 27, thereby realizing automatic cleaning of the cleaning plate 26 to ensure the use effect of the cleaning plate 26, and under the action of the horizontal torsion spring, the cleaning force of the cleaning plate 26 can be guaranteed; and a drain pipe with a valve is provided at the bottom of the shell 1 to facilitate the regular discharge of flocculants in the lower cavity 24.

[0034] Furthermore, in order to allow the water in the lower cavity 24 to flow back into the upper cavity 23, an installation port 29 is opened on the partition 22, and a filter screen 30 is fixed in the installation port 29. The partition 22 and the filter screen 30 are both made of plastic. A brush 31 is hingedly provided on the partition 22. The brush 31 is magnetically attracted to the sealing plate 28, and a vertical torsion spring is provided at the hinge between the brush 31 and the partition 22.

[0035] With this design, the sediment in the lower cavity 24 can be intercepted by setting the filter 30, and the water can return to the upper cavity 23 through the filter 30. However, the filter 30 will become clogged after long-term use; when the cleaning plate 26 passes through the filter 30, the upper surface of the filter 30 can be cleaned. At the same time, under the magnetic attraction of the cleaning plate 26 and the brush 31, the cleaning plate 26 drives the brush 31 to rotate, and the lower surface of the filter 30 is cleaned by the brush 31, and then under the action of the vertical torsion spring, the brush 31 returns to its original position.

[0036] Specifically, the transmission box 25 includes a lower box body 32, an upper box body 33, a transmission gear 34 and a transmission ring gear 35. The lower box body 32 is fixed on the partition 22, the upper box body 33 and the lower box body 32 are rotatably matched, and the cleaning plate 26 is located on the upper box body 33. A large gear 36 is fixed on the stirring shaft 20, and the large gear 36 is engaged with the transmission ring gear 35 through the transmission gear 34. The transmission gear 34 is rotatably arranged in the lower box body 32, and the transmission ring gear 35 is fixed in the upper box body 33; and the rod hole on the upper box body 33 is rotatably sealed with the stirring shaft 20.

[0037] With this design, the large gear 36 is driven to rotate by the stirring shaft 20, the large gear 36 drives the transmission ring gear 35 to rotate through the transmission gear 34, the transmission ring gear 35 drives the upper box body 33 to rotate, and the cleaning plate 26 is driven to rotate through the upper box body 33, thereby driving the cleaning plate 26; and since the radius of the transmission ring gear 35 is greater than the radius of the large gear 36, the cleaning plate 26 can be rotated at a lower speed.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A waste plastic cleaning wastewater treatment system, comprising a housing (1) having a liquid inlet pipe (2) and a liquid outlet pipe (3), wherein a filtering unit and a stirring unit are provided in the housing (1) and a storage box (4) is fixed therein, and is characterized in that: The filter unit comprises a frame (5), two ring plates (6) with side holes (7), a cylinder (8), a plurality of scrapers (9) with filter holes (10), and a power member, wherein the two ring plates (6) are fixed to the housing (1) through the frame (5), the cylinder (8) is rotatably arranged between the two ring plates (6), the plurality of scrapers (9) are fixed to the outer wall of the cylinder (8), the power member is fixed to the corresponding ring plates (6) and is used to drive the cylinder (8) to rotate, and a filter trough (11) is formed between adjacent scrapers (9) and the two ring plates (6); In the working state, the liquid inlet pipe (2) is located above the cylinder (8), and wastewater with foreign matter in the liquid inlet pipe (2) falls into the water filter tank (11) for filtration. The foreign matter generated by the filtration is transferred to the storage box (4) after the cylinder (8) rotates.

2. The waste plastic cleaning wastewater treatment system according to claim 1, characterized in that: The cylinder (8) is partially placed in the wastewater, and the scraper (9) rotates with the cylinder (8) to transfer foreign matter in the wastewater into the filter tank (11).

3. The waste plastic cleaning wastewater treatment system according to claim 1, characterized in that: The power member comprises a power motor (12), a driving gear (13) and a driven ring gear (14); the power motor (12) is fixed on a corresponding ring plate (6); the driving gear (13) is fixed on an output shaft of the power motor (12); the driving gear (13) is meshed with the driven ring gear (14); and the driven ring gear (14) is fixed to the inner wall of the cylinder (8).

4. The waste plastic cleaning wastewater treatment system according to claim 1, characterized in that: The cylinder (8) is provided with an auxiliary blowing mechanism, which includes an external pump body and an inner box body (15). A connecting hole (16) is formed on the cylinder (8), a stepped portion (17) is formed on the scraper (9), and an auxiliary blowing hole (18) is provided on the stepped portion (17). The external pump body and the inner box body (15) are both fixed on corresponding ring plates (6). The external pump body is connected to the inner box body (15). The inner box body (15) and the cylinder (8) are slidably sealed. The inner box body (15) is connected to the auxiliary blowing hole (18) through the connecting hole (16).

5. The waste plastic cleaning wastewater treatment system according to claim 1, characterized in that: The stirring unit comprises a stirring motor (19), a stirring shaft (20), and a stirring blade (21); the stirring motor (19) is fixed to the housing (1); the stirring shaft (20) is rotatably disposed in the housing (1) and is fixed to the output shaft of the stirring motor (19); and the stirring blade (21) is fixed to the stirring shaft (20).

6. The waste plastic cleaning wastewater treatment system according to claim 5, characterized in that: An upper cavity (23) and a lower cavity (24) are formed in the housing (1) by a fixed partition (22), and the filtering unit and the stirring unit are both located in the upper cavity (23); a transmission box (25) is fixedly provided on the partition (22), and at least one magnetic cleaning plate (26) is hingedly provided on the transmission box (25), and a horizontal torsion spring is provided at the hinge between the cleaning plate (26) and the transmission box (25).

7. The waste plastic cleaning wastewater treatment system according to claim 6, characterized in that: The partition (22) is provided with a discharge port (27), and a magnetic sealing plate (28) is slidably provided in the discharge port (27). The sealing plate (28) and the cleaning plate (26) are magnetically repelled and matched, and the sealing plate (28) is fixed to the partition (22) through symmetrically arranged elastic members.

8. The waste plastic cleaning wastewater treatment system according to claim 6, characterized in that: The partition (22) is provided with a mounting opening (29), a filter screen (30) is fixed in the mounting opening (29), the partition (22) and the filter screen (30) are both made of plastic, a plate brush (31) is hingedly provided on the partition (22), the plate brush (31) and the sealing plate (28) are magnetically attracted to each other, and a vertical torsion spring is provided at the hinge of the plate brush (31) and the partition (22).

9. The waste plastic cleaning wastewater treatment system according to claim 6, characterized in that: The transmission box (25) includes a lower box body (32), an upper box body (33), a transmission gear (34) and a transmission ring gear (35). The lower box body (32) is fixed on the partition (22). The upper box body (33) and the lower box body (32) are rotatably matched, and the cleaning plate (26) is located on the upper box body (33). A large gear (36) is fixed on the stirring shaft (20). The large gear (36) is meshed with the transmission ring gear (35) through the transmission gear (34). The transmission gear (34) is rotatably arranged in the lower box body (32), and the transmission ring gear (35) is fixed in the upper box body (33). The rod hole on the upper box body (33) is rotatably sealed with the stirring shaft (20).

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