A printing wastewater treatment device

Abstract

The application relates to a printing sewage treatment equipment and relates to the technical field of printing sewage treatment. The treatment equipment comprises a machine body, a flocculation device and a sewage discharge mechanism. The sewage discharge mechanism comprises a sewage discharge pipe arranged on the machine body, two push plates rotatably arranged at the bottom of the machine body and located at the connection position of a first sedimentation cavity and a second sedimentation cavity, a rotating assembly for driving the two push plates to rotate, and a drainage assembly in communication with the machine body and the sewage discharge pipe and used for discharging liquid in the machine body and the sewage discharge pipe. The two push plates are used to realize extrusion during the movement of the sediments, so that the liquid in the sediments is discharged through the drainage assembly, the water content in the sediments is reduced, the convenience of subsequent sediment treatment is improved, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of printing wastewater treatment, and in particular to a printing wastewater treatment device. Background Technology

[0002] In the process of treating printing wastewater, flocculation and sedimentation are generally used for pretreatment. The "Comprehensive Treatment and Circulation Device for Printing Wastewater" disclosed in existing patent documents includes sewage drainage pipes, collection tanks, UASB reactors, filters, clear water tanks, sludge tanks, as well as flocculation and sedimentation treatment machines and activated carbon adsorption layers.

[0003] Flocculation sedimentation treatment machines integrate the two processes of flocculation reaction and sedimentation separation, reducing equipment investment and industrial land use. However, both flocculation reaction and sedimentation separation take a long time, especially after the sediment settles, the discharge takes a long time, and a large amount of liquid remains in the sediment, making subsequent sediment treatment extremely inconvenient, thus reducing the efficiency of wastewater treatment. Summary of the Invention

[0004] In order to improve the efficiency of wastewater treatment, this application provides a printing wastewater treatment device.

[0005] This application provides a printing wastewater treatment device, which adopts the following technical solution: A printing wastewater treatment device includes a body and a flocculation device mounted on the body. The bottom wall of the body forms a first sedimentation chamber and a second sedimentation chamber that are interconnected and spaced apart vertically. The body is equipped with a sewage discharge mechanism, which includes: The drain pipe is located at the bottom of the machine body and is connected to the second sedimentation chamber and is equipped with a drain valve for opening and closing. Two push plates are rotatably mounted on the machine body at the bottom and located at the connection between the first sedimentation chamber and the second sedimentation chamber. When the sediment is set, the tops of the two push plates are positioned upward and abut against the inner wall of the machine body for positioning. A rotating assembly is used to drive the two push plates to rotate; The drainage assembly is connected to the machine body and the drain pipe and is used to discharge the liquid in the machine body and the drain pipe. When drainage is required, the two push plates push the sediment in the first sedimentation chamber to the second sedimentation chamber and cause the liquid to be discharged through the drainage assembly. The drainage assembly is closed and the drain valve is opened. The two push plates continue to rotate into the second sedimentation chamber and are used to push the sediment through the drain pipe until it abuts against the side wall of the second sedimentation chamber. Finally, the two push plates rotate back to their original positions.

[0006] By adopting the above technical solution, wastewater is added to the machine. The wastewater first passes through a flocculation device, causing the impurities in the wastewater to form flocculent precipitates. The precipitates settle into the second sedimentation chamber under the action of gravity for storage. As the amount of precipitates increases, the sediments gradually accumulate and enter the first sedimentation chamber for storage until the wastewater treatment is completed.

[0007] When the drainage assembly is opened, the rotating assembly is activated, pushing the tops of the two push plates downwards. During the rotation of the two push plates, the sediment in the first sedimentation chamber is pushed towards the second sedimentation chamber. During the movement, the liquid above the sediment moves out through the gap between the two push plates, and then the liquid is discharged through the drainage assembly until the push plates are horizontal. During the rotation of the push plates, the sediment entering the second sedimentation chamber is squeezed, allowing the liquid in the drain pipe to also be discharged through the drainage assembly. At the same time, even if there is little sediment in the first sedimentation chamber, the rotation of the push plates can squeeze the sediment into the second sedimentation chamber.

[0008] When the liquid is discharged, the drainage assembly closes and the drain valve opens, allowing the sediment to be discharged through the drain pipe under gravity. At the same time, the two push plates continue to rotate and enter the second sedimentation chamber. The push plates continue to push the sediment through the drain pipe until they are positioned against the side wall of the second sedimentation chamber. Then, the rotating assembly starts to drive the two push plates back to their original positions until they stop rotating against the side wall of the first sedimentation chamber. Finally, the drain valve closes and the next sewage treatment cycle begins.

[0009] The two push plates exert a squeezing effect as they move the sediment, causing the liquid inside the sediment to be discharged through the drainage component. At the same time, the liquid in the second sedimentation chamber and the sewage pipe can also be discharged through the drainage component, which greatly reduces the amount of water in the sediment and improves the convenience of subsequent sediment treatment. After the two push plates are rotated into the second sedimentation chamber, they can also push the sediment to pass through the sewage pipe more quickly, thus saving sediment discharge time and further improving the efficiency of sewage treatment.

[0010] Furthermore, during the contact between the push plate and the side wall of the second sedimentation chamber, the sediment adhering to the second sedimentation chamber can be squeezed out and cleaned. During the contact between the push plate and the side wall of the first sedimentation chamber, the sediment adhering to the first sedimentation chamber and the push plate can be squeezed out and cleaned. This reduces the adverse effects of sediment adhering to the machine body and the push plate on subsequent treatment, thus further accelerating the wastewater treatment efficiency.

[0011] Optionally, a clearance space is formed between the two push plates to allow liquid to flow out and to avoid each other when they are close together. One of the push plates is provided with a positioning element. When the two push plates are rotated to a horizontal position, the positioning element abuts against the other push plate to prevent sediment from moving out through the clearance space.

[0012] By adopting the above technical solution, the clearance space is used to achieve clearance during the rotation of the two push plates. At the same time, when the push plates rotate to the horizontal state, the positioning part on the push plate abuts against the other push plate to block the clearance space. During the rotation of the positioning part, the sediment can also be pushed towards the second sedimentation chamber, thereby further improving the squeezing and pushing effect on the sediment and further improving the sewage treatment efficiency.

[0013] Optionally, the two push plates abut against the first sedimentation chamber or the second sedimentation chamber at both ends and are used to scrape off the adhering sediment. When the push plates are set upward, they are in close contact with the side wall of the first sedimentation chamber, or when they are set downward, they are in close contact with the side wall of the second sedimentation chamber and are used to squeeze out the sediment adhering to the push plates.

[0014] By adopting the above technical solution, the rotating push plate can dislodge and discharge the sediment adhering to the first or second sedimentation chamber, and at the same time, it can squeeze out the sediment adhering to the first and second sedimentation chambers to achieve cleaning. Thus, the push plate can clean the adhering sediment while squeezing, allowing more sediment to be discharged and greatly improving the efficiency of sewage treatment.

[0015] Optionally, the rotating assembly includes: Two gears are mounted on two push plates; Two racks are slidably mounted on the machine body and mesh with two gears; A pusher is used to drive two racks to move closer or further apart.

[0016] By adopting the above technical solution, the pusher drives the two racks to move closer or further apart, and the movement of the two racks drives the two gears to rotate, thereby realizing the simultaneous rotation of the two push plates.

[0017] Optionally, the drainage assembly includes: Drain pipe one is installed on the machine body and communicates with the second sedimentation chamber. When the push plate is rotated to the horizontal state, the connection between drain pipe one and the second sedimentation chamber is located above the push plate. Drainage pipe 2 is installed on the sewage pipe and is inclined downward. Drainage pipe 2 is equipped with a filter screen to block sediment from passing through and to allow liquid to pass through. Drainage pipe 1 and drainage pipe 2 are respectively equipped with a first valve body and a second valve body to control opening and closing. A collection tank, connected to drain pipe one and drain pipe two, is used to collect liquid.

[0018] By adopting the above technical solution, the first valve body and the second valve body are opened, and the liquid in the second sedimentation chamber is discharged into the collection tank through the first drain pipe. At the same time, the liquid in the sewage pipe passes through the filter screen and then enters the collection tank through the second drain pipe for collection, thereby achieving liquid collection. Meanwhile, the filter screen can prevent sediment from moving out, and as the sediment is discharged later, the sediment adhering to the filter screen is also moved away, thereby accelerating the speed of liquid passing through the second drain pipe during subsequent sewage treatment, thus ensuring the drainage effect during subsequent sewage treatment.

[0019] Optionally, the collection box forms a first chamber and a second chamber that are independent of each other. The drain pipe is connected to both the first chamber and the second chamber through a three-way valve. The three-way valve controls the connection between the drain pipe and the first chamber or the second chamber.

[0020] By adopting the above technical solution, there is still a risk that some sediment may move to the top of the push plate during the rotation process. Therefore, during the process of the push plate rotating from rotation to horizontal position, the three-way valve controls the drain pipe to connect with the first chamber. Thus, the liquid containing the removed sediment first flows through the drain pipe to the first chamber for storage. After a period of time, the three-way valve controls the drain pipe to connect with the second chamber, so the liquid flows to the second chamber for storage. This allows the liquid in the first chamber to be further processed separately, which can improve the processing efficiency while ensuring the processing effect.

[0021] Optionally, the flocculation device includes: The stirring rod is rotatably mounted on the top of the machine body and is equipped with stirring blades for stirring. Multiple grid frames are arranged in a circumferential array around the axis of the stirring rod and slide radially along the stirring rod and can move vertically. The grid frames are provided with multiple through holes for liquid to pass through. A drive mechanism is used to drive the stirring rod to rotate and to move multiple grid frames horizontally and vertically simultaneously.

[0022] By adopting the above technical solution, the drive mechanism drives the stirring rod to rotate, the stirring rod rotates the stirring blades to rotate, the stirring blades stir the liquid, and at the same time, multiple grid frames move horizontally and vertically back and forth. The grid frames can prevent the liquid from forming vortices, so that the impurities in the liquid can form precipitates under the action of flocculants. The horizontal and vertical movement of the grid frames can accelerate the flocculation speed of impurities in the liquid, thereby further improving the wastewater treatment efficiency.

[0023] Optionally, the drive mechanism includes: Rotating component, used to drive the stirring rod to rotate; The driving block is mounted on the stirring rod and has multiple interconnected arc-shaped surfaces arranged in a circular array around the axis of the stirring rod. The arc-shaped surfaces include interconnected protrusions that extend outward and recesses that extend inward. The driving component is mounted on multiple grid frames and moves vertically back and forth under the drive of the driving block; Multiple elastic components are disposed on the grid frame and are used to drive the grid frame to abut against the curved surface.

[0024] By adopting the above technical solution, the rotating component drives the stirring rod to rotate, which in turn causes the driving block to rotate. Under the action of the elastic component, the grid frame is pressed against the arc-shaped surface. The position of the grid frame changes when passing through the protrusions and recesses, causing the grid frame to swing back and forth. At the same time, the driving component causes multiple grid frames to move vertically back and forth, enabling the grid frames to move back and forth in both horizontal and vertical directions. Therefore, while preventing the liquid from swirling, it can also accelerate the flocculation speed of impurities in the liquid, thereby improving the treatment efficiency of sewage.

[0025] Optionally, a drive groove with gradually changing height and connected end to end is formed along the side wall of the arc surface. The drive component is a drive column set on the grid frame and slidably set on the drive groove. The rotation of the drive block drives the drive column and the grid frame to move vertically back and forth.

[0026] By adopting the above technical solution, the drive column slides on the drive groove, and the rotation of the arc surface causes the drive groove to rotate, thereby causing the drive column and the grid frame to move up and down reciprocally. At the same time, since the drive groove is opened along the arc surface, the rotation of the drive groove also causes the grid frame to move back and forth in the horizontal direction, thereby enabling the grid frame to move up and down and horizontally reciprocally.

[0027] Optionally, the resilient component includes: The movable block is vertically slidably mounted on the machine body and has a movable groove. The guide block is set on the grid frame and slides along the axis of the stirring rod on the moving trough; The spring is mounted on the guide block and presses against the bottom of the moving groove, and is in a compressed state.

[0028] By adopting the above technical solution, when the grid frame moves, the driving block moves vertically, and the spring pushes the grid frame against the arc surface, so that the grid frame can move on the moving block in the horizontal direction, thereby realizing the vertical and horizontal movement of the grid frame; at the same time, the spring is located in the moving groove, thereby reducing the probability of sewage damaging the spring.

[0029] In summary, this application includes at least one of the following beneficial technical effects: 1. The two push plates push the sediment to move, creating a squeezing effect that allows the liquid inside the sediment to be discharged through the drainage component. At the same time, the liquid in the second sedimentation chamber and the sewage pipe can also be discharged through the drainage component, which greatly reduces the amount of water in the sediment and improves the convenience of subsequent sediment treatment. After the two push plates rotate into the second sedimentation chamber, they can also push the sediment to pass through the sewage pipe more quickly, thus saving sediment discharge time and further improving the efficiency of sewage treatment.

[0030] 2. During the process of the push plate contacting the side wall of the second sedimentation chamber, the sediment adhering to the second sedimentation chamber can also be squeezed out and cleaned. During the process of the push plate contacting the side wall of the first sedimentation chamber, the sediment adhering to the first sedimentation chamber and the push plate can be squeezed out and cleaned. This reduces the adverse effects of sediment adhering to the machine body and the push plate on subsequent treatment, thus further accelerating the wastewater treatment efficiency. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of a wastewater treatment equipment; Figure 2 yes Figure 1 A cross-sectional schematic diagram of AA in the middle; Figure 3 This is a schematic diagram of the flocculation device in a wastewater treatment system; Figure 4 This is a partial structural schematic diagram of the flocculation device in a wastewater treatment equipment, showing a cross-section of the side wall of the moving block. Figure 5 yes Figure 1 Enlarged schematic diagram of section B.

[0032] Reference numerals: 1. Body; 11. First sedimentation chamber; 12. Second sedimentation chamber; 13. Mounting ring; 14. Frame; 2. Flocculation device; 21. Stirring rod; 22. Grille frame; 23. Stirring blade; 3. Drive mechanism; 31. Rotating component; 32. Drive block; 33. Drive component; 34. Arc-shaped surface; 35. Protrusion; 36. Recess; 37. Drive groove; 4. Elastic component; 41. Moving block; 42. Guide block; 43. Spring; 44. Moving groove; 5. 51. Sewage discharge mechanism; 52. Sewage discharge pipe; 53. Sewage discharge valve; 54. Push plate; 55. Rotating shaft; 56. Positioning component; 57. Rotating assembly; 58. Gear; 59. Rack; 60. Pushing component; 71. Drainage assembly; 62. Drainage pipe one; 73. Drainage pipe two; 74. Collection box; 75. Partition plate; 76. First chamber; 77. Second chamber; 78. First pipe body; 79. Second pipe body; 70. First valve body; 71. Second valve body; 72. Three-way valve. Detailed Implementation

[0033] The following provides a further detailed description of this application.

[0034] This application discloses a printing wastewater treatment device.

[0035] Reference Figure 1 and Figure 2 The wastewater treatment equipment includes a body 1 and a flocculation device 2 mounted on the body 1. A frame 14, which is fixedly installed on the ground, is mounted on the bottom of the body 1. The bottom wall of the body 1 forms a first sedimentation chamber 11 and a second sedimentation chamber 12 that are interconnected and spaced apart vertically. The first sedimentation chamber 11 and the second sedimentation chamber 12 are located above the flocculation device 2 and below the flocculation device 2. The body 1 is also equipped with a sewage discharge mechanism 5. The flocculation device 2 is used to flocculate impurities in the wastewater into flocculent precipitates. The precipitates then settle into the second sedimentation chamber 12 under the action of gravity for separation. As the amount of precipitates increases, they accumulate in the first sedimentation chamber 11. The sewage discharge mechanism 5 is used to squeeze the precipitates and discharge the liquid. The precipitates are then discharged to complete the wastewater treatment.

[0036] Reference Figure 1 and Figure 3 The flocculation device 2 includes a stirring rod 21, multiple grid frames 22, and a drive mechanism 3. The stirring rod 21 is coaxially rotatably mounted on the top surface of the machine body 1, and the bottom of the stirring rod 21 extends vertically downward into the machine body 1. Multiple stirring blades 23 for stirring are spaced apart on the stirring rod 21. An installation ring 13 is coaxially fixedly installed on the inner side wall of the machine body 1. Multiple grid frames 22 are arranged in a circular array around the axis of the stirring rod 21 and spliced ​​to form a circular structure. Multiple vertical through holes are spaced apart on the grid frames 22 to allow sediment to pass through.

[0037] Reference Figure 1 , Figure 3 and Figure 4 The drive mechanism 3 is used to drive the stirring rod 21 to rotate and cause multiple grid frames 22 to move horizontally and vertically at the same time. The drive mechanism 3 includes a rotating component 31, a drive block 32, a drive component 33 and multiple elastic components 4. The rotating component 31 is a servo motor. The rotating component 31 is fixedly installed on the upper surface of the machine body 1, and the output shaft of the rotating component 31 is connected to the stirring rod 21 and used to drive the stirring rod 21 and the stirring blade 23 to rotate.

[0038] The drive block 32 is coaxially fixed on the stirring rod 21 and located inside the multiple grid frames 22. Multiple interconnected arc-shaped surfaces 34 are arranged in a circular array around the axis of the stirring rod 21 on the outer wall of the drive block 32. Each arc-shaped surface 34 includes interconnected and arc-shaped protrusions 35 and recesses 36. The protrusions 35 protrude outward and the recesses 36 are recessed inward. At the same time, a drive groove 37 is formed along the surface of the arc-shaped surface 34. The height of the drive groove 37 gradually changes. The height of the drive groove 37 gradually increases to the highest point and then gradually decreases, and the two ends are connected.

[0039] Multiple drive components 33 are provided and are located on multiple grid frames 22 respectively. The drive component 33 is a drive column fixedly installed on the side wall of the grid frame 22 near the drive block 32. The diameter of the drive column is the same as the width of the drive groove 37, and the drive column is slidably installed on the drive groove 37. Multiple elastic components 4 are provided one-to-one with multiple grid frames 22. The elastic components 4 are located on the end of the grid frame 22 away from the drive component 33, and under the action of elastic force, the drive column is always pushed against the drive groove 37 for positioning.

[0040] The rotation of the stirring rod 21 drives the stirring blade 23 to rotate, and adds flocculant to the wastewater, causing impurities in the wastewater to form flocculent precipitates. The rotation of the stirring rod 21 drives the driving block 32, the arc-shaped surface 34, and the driving groove 37 to rotate, while the driving column is slidably mounted on the driving groove 37. When the driving column moves from the driving groove 37 located at the recess 36 to the driving groove 37 located at the protrusion 35, it drives the driving column and the grid frame 22 away from the stirring rod 21. Conversely, when the driving column moves from the driving groove 37 located at the protrusion 35 to the driving groove 37 located at the recess 36, it drives the driving column and the grid frame 22 closer to the stirring rod 21, thereby causing the grid frame 22 to move horizontally back and forth. At the same time, the different heights of the driving groove 37 also cause the grid frame 22 to move vertically back and forth, thus realizing the reciprocating movement of the grid frame 22 in both horizontal and vertical directions. The grid frame 22 prevents the formation of vortices when the wastewater is stirred, and the reciprocating movement of the grid frame 22 accelerates the deposition of flocculent precipitates, thereby accelerating the wastewater treatment efficiency.

[0041] The elastic component 4 includes a movable block 41, a guide block 42, and a spring 43. The movable block 41 is vertically slidably installed on the inner side wall of the mounting ring 13. A movable groove 44 is radially formed on the side wall of the movable block 41 near the grid frame 22 along the stirring rod 21. The guide block 42 is fixedly installed on the side wall of the grid frame 22 near the movable groove 44. The guide block 42 is radially slidably installed on the movable groove 44 along the stirring rod 21. The cross-section of the guide block 42 is square, so that the guide block 42 and the grid frame 22 can only move horizontally and cannot rotate. The spring 43 is fixedly installed on one end of the guide block 42 located in the movable groove 44. The other end of the spring 43 is pressed against the bottom of the movable groove 44 for positioning and is in a compressed state, so that the drive column is pressed against the drive groove 37 for positioning.

[0042] Reference Figure 1 , Figure 2 , Figure 5 The sewage discharge mechanism 5 includes a sewage discharge pipe 51, two push plates 52, a rotating assembly 53, and a drainage assembly 6. The first sedimentation chamber 11 and the second sedimentation chamber 12 both have trapezoidal cross sections, and the top cross section area is larger than the bottom cross section area. The top of the second sedimentation chamber 12 and the bottom of the first sedimentation chamber 11 are the same and interconnected. The sewage discharge pipe 51 is fixedly installed at the bottom of the machine body 1. The sewage discharge pipe 51 is set vertically downward and communicates with the second sedimentation chamber 12. A sewage discharge valve 511 for controlling opening and closing is fixedly installed on the sewage discharge pipe 51.

[0043] The bottoms of the two push plates 52 are rotatably mounted at both ends of the connection between the first sedimentation chamber 11 and the second sedimentation chamber 12 via a rotating shaft 521. The tops of the two push plates 52 are tilted upward and positioned against the inner wall of the first sedimentation chamber 11. After the two push plates 52 are rotated, they can also rotate into the second sedimentation chamber 12 and be positioned against the side wall of the second sedimentation chamber 12. At the same time, the top of the second sedimentation chamber 12 and the first sedimentation chamber 11 have the same width, so that when the two push plates 52 are rotated, their ends can abut against the opposite side walls of the first sedimentation chamber 11 or the opposite side walls of the second sedimentation chamber 12, thereby scraping off the sediments adhering to the first sedimentation chamber 11 and the second sedimentation chamber 12.

[0044] One of the push plates 52 is fixedly mounted on the top of the positioning member 522. A clearance space is formed between the two push plates 52 for liquid to flow out and for clearance when rotating. When the two push plates 52 are rotated to the horizontal state, the positioning member 522 abuts against the other push plate 52 and blocks the clearance space, thereby preventing the sediment from passing through the clearance space.

[0045] A rotating assembly 53 is mounted on the body 1 and drives the two push plates 52 to rotate. The rotating assembly 53 includes two gears 54, two racks 55, and a pusher 56. Both rotating shafts 521 extend to the outside of the body 1. The two gears 54 are keyed to the rotating shafts 521 and located on the outside of the body 1. The two racks 55 are horizontally slidably mounted on the outer wall of the body 1, and each rack 55 meshes with one of the two gears 54. The pusher 56 is a double-headed electric actuator, fixedly mounted on the outer wall of the body 1, and its two piston rods are fixedly connected to the two racks 55. The pusher 56 drives the two racks 55 to move closer or further apart, thereby driving the two push plates 52 to rotate simultaneously.

[0046] The drainage assembly 6 is connected to the body 1 and the drain pipe 51 and is used to drain the liquid inside the body 1 and the drain pipe 51. The drainage assembly 6 includes a first drain pipe 61, a second drain pipe 62 and a collection box 7. The first drain pipe 61 is fixedly installed on the body 1 and is inclined downward. When the push plate 52 is rotated to the horizontal state, the connection point between the first drain pipe 61 and the body 1 is located above the rotating shaft 521 and the push plate 52, and is used to drain the liquid above the push plate 52 at this time. The second drain pipe 62 is detachably installed on the drain pipe 51 through a flange and is inclined downward. A water filter screen is installed at the connection between the second drain pipe 62 and the drain pipe 51. The water filter screen can also be removed for cleaning or replacement when the second drain pipe 62 is separated from the drain pipe 51. The first drain pipe 61 and the second drain pipe 62 are respectively fixedly installed with a first valve body 76 and a second valve body 77 for controlling opening and closing.

[0047] The collection box 7 is connected to drain pipe 61 and drain pipe 62 and is used to collect liquid. A partition 71 is fixedly installed on the inner wall of the collection box 7, which divides the collection box 7 into a first chamber 72 and a second chamber 73 that are independent of each other. The space of the first chamber 72 is smaller than the space of the second chamber 73. Drain pipe 62 is connected to the second chamber 73. A first pipe body 74 and a second pipe body 75 are fixedly installed on the collection box 7 and are respectively connected to the first chamber 72 and the second chamber 73. The first pipe body 74 and the second pipe body 75 are connected to drain pipe 61 through a three-way valve 78. The three-way valve 78 is used to control the connection between drain pipe 61 and the first pipe body 74 or the second pipe body 75, thereby realizing the control of drain pipe 61 to connect with the first chamber 72 or the second chamber 73 by the three-way valve 78.

[0048] During the rotation of the two push plates 52, the sediment can be pushed towards the second sedimentation chamber 12. At the same time, the liquid moves upward through the clearance space to the top of the push plate 52. At this time, some sediment will also move out through the clearance space and mix into the discharged liquid. Then, the sediment will move downward under the action of gravity and approach the drain pipe 61. Therefore, when the drainage starts, the three-way valve 78 controls the connection between the drain pipe 61 and the first chamber 72. The liquid mixed with sediment located above the rotating shaft 521 can flow through the drain pipe 61 and the first pipe body 74 to the first chamber 72 for storage. At this time, the liquid squeezed into the sewage pipe 51 can move through the filter screen and then through the drain pipe 62 to the second chamber 73 for storage. After a period of time, the three-way valve 78 controls the connection between the drain pipe 61 and the second chamber 73, so that the liquid flowing through the drain pipe 61 and the drain pipe 62 can flow into the second chamber 73 for storage. This allows the liquid in the first chamber 72 to be treated again, which can improve the treatment efficiency while ensuring the sewage treatment effect.

[0049] The working principle of this application embodiment is as follows: Wastewater and flocculant are added into the machine body 1. The rotating part 31 starts to drive the stirring rod 21 and stirring blade 23 to rotate and stir the wastewater. The rotation of the stirring rod 21 drives multiple grid frames 22 to move back and forth in both vertical and horizontal directions at the same time. The grid frames 22 can prevent the wastewater from forming vortices, and the movement of the grid frames 22 can accelerate the formation of flocculent precipitates by impurities. The precipitates settle downwards into the second sedimentation chamber 12 under the action of gravity. As the amount of precipitates increases, the precipitates accumulate in the first sedimentation chamber 11.

[0050] As the wastewater treatment is completed, the rotating part 31 stops rotating, and the pushing part 56 drives the two pushing plates 52 to rotate downward. When the two pushing plates 52 rotate, they push the sediment in the first sedimentation chamber 11 toward the second sedimentation chamber 12. During the pushing process, the sediment is squeezed until the two pushing plates 52 rotate to a horizontal state, and the positioning part 522 is used to block the clearance space. At the same time as the pushing plates 52 rotate, the first valve body 76 and the second valve body 77 open the drain pipe 1 61 and the drain pipe 2 62. The liquid flows through the drain pipe 1 61 and the drain pipe 2 62 into the collection box 7 for collection, so that the liquid in the sediment can flow out quickly. After the liquid is drained, the first valve body 76 and the second valve body 77 close.

[0051] When the drain valve 511 is opened, the sediment is discharged through the drain pipe 51. At the same time, the pusher 56 continues to drive the two push plates 52 to continue to rotate downward into the second sedimentation chamber 12. When the two push plates 52 rotate, they can push the sediment to accelerate through the drain pipe 51 until the two push plates 52 are positioned against the side wall of the second sedimentation chamber 12. After the sediment is discharged, the drain valve 511 is closed, and the pusher 56 drives the two push plates 52 to rotate upward and be positioned close to the side wall of the first sedimentation chamber 11, thereby greatly improving the sewage treatment efficiency.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A printing wastewater treatment device, characterized in that: The system includes a body (1) and a flocculation device (2) mounted on the body (1). A first sedimentation chamber (11) and a second sedimentation chamber (12) are formed on the bottom wall of the body (1) and are interconnected and spaced apart vertically. The body (1) is equipped with a sewage discharge mechanism (5), which includes: a sewage discharge pipe (51) mounted on the bottom of the body (1) and connected to the second sedimentation chamber (12), and equipped with a sewage discharge valve (511) for opening and closing; two push plates (52) rotatably mounted on the body (1) at the bottom and located at the connection between the first sedimentation chamber (11) and the second sedimentation chamber (12). When sedimentation occurs, the tops of the two push plates (52) are positioned upwards and abut against the inner wall of the body (1) for positioning; rotation... Component (53) is used to drive two push plates (52) to rotate; drainage component (6) is connected to the body (1) and the drain pipe (51) and is used to drain the liquid in the body (1) and the drain pipe (51); when drainage is required, the two push plates (52) push the sediment in the first sedimentation chamber (11) to the second sedimentation chamber (12) and cause the liquid to be discharged through the drainage component (6), then the drainage component (6) closes, the drain valve (511) opens, the two push plates (52) continue to rotate to the second sedimentation chamber (12) and are used to push the sediment to be discharged through the drain pipe (51) until it abuts against the side wall of the second sedimentation chamber (12), and finally, the two push plates (52) return to their original positions; A clearance space is formed between the push plates (52) to allow liquid to flow out and to avoid each other when they are close together. One of the push plates (52) is provided with a positioning element (522). When the two push plates (52) are rotated to a horizontal state, the positioning element (522) abuts against the other push plate (52) to prevent the sediment from moving out through the clearance space. The flocculation device (2) includes: a stirring rod (21), which is rotatably set on the top of the machine body (1) and is provided with stirring blades (23) for stirring; a plurality of grid frames (22), which are arranged in a circumferential array around the axis of the stirring rod (21) and are arranged to slide radially along the stirring rod (21) and can move vertically. The grid frames (22) are provided with a plurality of through holes for liquid to pass through; and a drive mechanism (3). The driving mechanism (3) is used to drive the stirring rod (21) to rotate and to move multiple grid frames (22) horizontally and vertically simultaneously. The driving mechanism (3) includes: a rotating component (31) for driving the stirring rod (21) to rotate; a driving block (32) for being arranged on the stirring rod (21) and having multiple interconnected arc surfaces (34) arranged in a circular array around the axis of the stirring rod (21), the arc surfaces (34) including interconnected and outwardly protruding parts (35) and inwardly recessed parts (36); a driving component (33) for being arranged on multiple grid frames (22) and moving vertically reciprocally under the drive of the driving block (32); and multiple elastic components (4) for being arranged on the grid frames (22) and for driving the grid frames (22) to abut against the arc surfaces (34).The arc-shaped surface (34) has a drive groove (37) with gradually changing height and connected end to end along the side wall of the arc-shaped surface (34). The drive component (33) is a drive column set on the grid frame (22) and slidably set on the drive groove (37). The drive block (32) rotates to drive the drive column and the grid frame (22) to move vertically back and forth. The rotating component (53) includes: two gears (54) set on two push plates (52); two racks (55) slidably set on the body (1) and meshing with the two gears (54); and a pusher (56) for driving the two racks (55) to move closer or further away from each other. The drainage component (6) includes: a drain pipe. Drain pipe 1 (61) is installed on the body (1) and communicates with the second sedimentation chamber (12). When the push plate (52) is rotated to the horizontal state, the connection between drain pipe 1 (61) and the second sedimentation chamber (12) is located above the push plate (52); Drain pipe 2 (62) is installed on the sewage pipe (51) and is inclined downward. Drain pipe 2 (62) is provided with a filter screen to block sediment from passing through and to allow liquid to pass through. Drain pipe 1 (61) and drain pipe 2 (62) are respectively provided with a first valve body (76) and a second valve body (77) for controlling opening and closing; Collection box (7) is connected to drain pipe 1 (61) and drain pipe 2 (62) and is used to collect liquid.

2. The printing wastewater treatment equipment according to claim 1, characterized in that: The elastic component (4) includes: a moving block (41), which is vertically slidably disposed on the machine body (1) and has a moving groove (44); a guide block (42), which is disposed on the grid frame (22) and is radially slidably disposed on the moving groove (44) along the stirring rod (21); and a spring (43), which is disposed on the guide block (42) and presses against the bottom of the moving groove (44) and is in a compressed state.

3. The printing wastewater treatment equipment according to claim 1, characterized in that: The two push plates (52) abut against the first sedimentation chamber (11) or the second sedimentation chamber (12) at both ends and are used to scrape off the adhering sediment. When the push plates (52) are set upward, they are close to the side wall of the first sedimentation chamber (11) or downward, they are close to the side wall of the second sedimentation chamber (12) and are used to squeeze out the sediment adhering to the push plates (52).

4. The printing wastewater treatment equipment according to claim 1, characterized in that: The collection box (7) forms an independent first chamber (72) and a second chamber (73). The drain pipe (61) is connected to both the first chamber (72) and the second chamber (73) through a three-way valve (78). The three-way valve (78) controls the drain pipe (61) to be connected to either the first chamber (72) or the second chamber (73).

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