A waste incineration slag water circulation treatment device and treatment method

Abstract

The application discloses a kind of waste incineration slag water circulation processing device and processing method, it is related to slag water processing technical field;Including the height of successively lower reservoir and sand tank, the reservoir outside fixed with on the sand tank of screen tube;Filtering dehydration component, it includes with the rotation connection of screen tube rotating shaft, the rotating shaft is fixed with the helical feed plate of pitch variation, the side of screen tube close to the sand tank is slidably connected with screen mesh;Adjusting component, it includes with the sliding connection of adjusting plate in the rotating shaft away from the reservoir one end, the two sides of screen mesh close to the adjusting plate are each equipped with knock stick, when the adjusting plate along the rotating shaft slides, the adjusting plate can drive knock stick to screen mesh knock vibration, and can drive screen mesh along screen tube slide;The application can improve the efficiency of slag water circulation processing.

Description

Technical Field

[0001] This invention relates to the field of slag water treatment technology, and in particular to a waste incineration slag water recycling treatment device and treatment method. Background Technology

[0002] The incineration process of municipal solid waste generates a large amount of complex incinerator slag. This slag typically requires washing and sorting processes for resource utilization. During the slag washing stage, a slag-water mixture with high turbidity and high impurity content is produced, containing a large amount of fine sand, powdery slag, and other solid particles. To separate the solids from the washing water and achieve water resource recycling, multi-stage treatment processes such as screening and sedimentation are usually required.

[0003] Currently, common slag water treatment devices typically include a screening mechanism for initial separation of solids and liquids, as well as subsequent sedimentation tanks, sludge tanks, and clear water tanks. Among these, the screening mechanism is a key component affecting the overall treatment efficiency and effectiveness. However, existing screening devices generally suffer from the following technical defects in actual operation: due to the large amount of solid particles and the easy adhesion of viscous substances (such as unburned organic matter and fly ash) in slag water, the screening screen is easily clogged during continuous operation. Once clogged, the screening efficiency drops sharply, resulting in incomplete liquid separation, high moisture content in solid materials, and directly affecting the treatment load and effectiveness of subsequent settling units.

[0004] Inconvenient cleaning and maintenance, affecting continuous operation: When the screening screen becomes clogged, it usually needs to be stopped for manual cleaning or backwashing. This not only increases the labor intensity of workers, but more importantly, it interrupts the continuity of the production process, reduces the working efficiency and stability of the entire processing unit, and frequent shutdowns for maintenance also increase operating costs.

[0005] Therefore, a waste incinerator slag water recycling treatment device and treatment method were invented to solve the above problems. Summary of the Invention

[0006] The main objective of this invention is to provide a waste incinerator slag water recycling treatment device and method, which can effectively solve the technical problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a waste incinerator slag water circulation treatment device, comprising a slag storage tank and a sedimentation tank with decreasing heights, wherein a screening pipe is fixed on the outside of the slag storage tank and located on the sedimentation tank.

[0008] The filtration and dewatering assembly includes a rotating shaft rotatably connected to the screening tube, a spiral feeding plate with varying pitch fixed on the rotating shaft, and a screening screen slidably connected to the side of the screening tube near the settling tank.

[0009] The adjustment assembly includes an adjustment plate at one end of the rotating shaft away from the slag storage tank, and striking rods on both sides of the screening screen near the adjustment plate. When the adjustment plate slides along the rotating shaft, the adjustment plate can drive the striking rods to strike and vibrate the screening screen, and can also drive the screening screen to slide along the screening tube.

[0010] Preferably, the adjustment assembly includes an electric push rod fixedly connected to the rotating shaft, the output end of the electric push rod being fixedly connected to the adjustment plate, and a torque sensor located at the rotating shaft installed inside the screening tube, the torque sensor being wirelessly connected to the electric push rod via a control panel.

[0011] Preferably, the end of the adjusting plate away from the rotating shaft is provided with a plurality of circumferentially distributed arc-shaped blocks, and the end of the striking rod near the adjusting plate is fixed with a top rod by an auxiliary plate, the top rod being able to contact the arc-shaped blocks.

[0012] Preferably, a drive rod that is fixedly connected to the screening screen is slidably connected inside the screening tube. A wedge block is provided at the free end of the drive rod. Multiple pressure rods are slidably connected to the circumferential side of the adjusting plate through a first elastic element. The wedge block can contact the pressure rod on the corresponding side.

[0013] Preferably, a protective box is fixed to the end of the screening pipe away from the slag storage tank, and the auxiliary plate is connected to the protective box by a second elastic element.

[0014] Preferably, one side of the screening mesh is connected to the screening tube via a third elastic element.

[0015] Preferably, the end of the screening pipe away from the slag storage tank has an opening facing the sedimentation tank, and the screening pipe is provided with a guide plate located at the discharge port and in an inclined state.

[0016] Preferably, the screening pipe is provided with a drive assembly, the drive assembly including a drive motor fixedly connected to the rotating shaft, the drive motor being fixedly connected to the screening pipe, and the slag storage tank being connected to the screening pipe through a water inlet pipe.

[0017] Preferably, the sedimentation tank is provided with a sedimentation tank and a clear water tank of decreasing height on the side away from the slag storage tank.

[0018] The present invention also provides a method for recycling waste incinerator slag water, comprising the following steps:

[0019] S1. The slag-water mixture is conveyed through the inlet pipe to the screening pipe;

[0020] S2. Drive the rotating shaft to rotate, thereby rotating the spiral feeding plate and conveying the material towards the outlet of the screening pipe. At the same time, the liquid passes through the screening screen and enters the sedimentation tank.

[0021] S3. When the torque of the rotating shaft changes, control the adjusting plate to slide along the rotating shaft;

[0022] S4. During the sliding process of the adjusting plate, the striking rod is driven to periodically strike and vibrate the screening screen through the cooperation of the arc-shaped block on it and the top rod. At the same time, the screening screen is driven to slide along the screening tube through the cooperation of the pressure rod on the adjusting plate and the wedge block on the screening screen.

[0023] S5. The dehydrated material is discharged from the outlet, and the filtered liquid enters the sedimentation tank for subsequent sedimentation and separation.

[0024] The technical effects and advantages of this invention are as follows:

[0025] This invention utilizes a variable-pitch spiral feeder to physically compress suspended solids and other solids in stages, breaking down the water film on these materials and improving the dehydration rate and slag water circulation efficiency. Furthermore, a torque sensor monitors the torque changes of the rotating shaft, indirectly determining the degree of clogging in the screening screen. When the screen is slightly clogged, a vibration mode is triggered, and an adjustment component drives a striking rod to strike the screen, loosening the blockage through vibration. Simultaneously, the scraping action of the spiral feeder causes the blockage to dislodge. When the screen is severely clogged, a powerful vibration and displacement cleaning mode is triggered. Simultaneously with strong striking, the screen slides back and forth within the tube, allowing it to work alternately in different areas and shearing and impacting the blockage, resulting in stronger cleaning and further improving the efficiency of slag water circulation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the screening tube in this invention;

[0028] Figure 3 This is a cross-sectional view of the sieve tube in this invention;

[0029] Figure 4 This is a schematic diagram of the structure of the adjustment component and the rotating shaft in this invention;

[0030] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0031] Figure 6 For the present invention Figure 4Enlarged view of point B in the middle;

[0032] Figure 7 This is a schematic diagram of the spiral feed plate in this invention.

[0033] In the diagram: 1. Slag storage tank; 2. Sedimentation tank; 3. Sludge tank; 4. Clear water tank; 5. Screening pipe; 501. Discharge port; 502. Baffle plate;

[0034] 6. Filtration and dewatering assembly; 601. Rotating shaft; 602. Spiral feed plate; 603. Screening mesh; 604. Third elastic element;

[0035] 7. Adjustment assembly; 701. Adjustment plate; 702. Striking rod; 703. Electric push rod; 704. Torque sensor; 705. Arc block; 706. Auxiliary plate; 707. Top rod; 708. Drive rod; 709. Wedge block; 710. First elastic element; 711. Pressure rod; 712. Second elastic element;

[0036] 8. Protective box; 9. Drive assembly; 901. Drive motor; 902. Water inlet pipe. Detailed Implementation

[0037] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] like Figure 1 and Figure 2 As shown, this embodiment provides a waste incinerator slag water recycling treatment device, including a slag storage tank 1, a sedimentation tank 2, a sludge tank 3 and a clear water tank 4 with decreasing heights in sequence. A screening pipe 5 located on the sedimentation tank 2 is fixed on the outside of the slag storage tank 1.

[0040] The filtration and dewatering assembly 6 includes a rotating shaft 601 rotatably connected to the screening pipe 5, a spiral feeding plate 602 with varying pitch fixed on the rotating shaft 601, and a screening screen 603 slidably connected to the side of the screening pipe 5 near the sedimentation tank 2.

[0041] The end of the screening pipe 5 away from the slag storage tank 1 is provided with an outlet 501 that faces the sedimentation tank 2. The screening pipe 5 is provided with an inclined guide plate 502 located at the outlet 501.

[0042] The screening pipe 5 is equipped with a drive assembly 9, which includes a drive motor 901 fixedly connected to the rotating shaft 601. The drive motor 901 is fixedly connected to the side wall of the screening pipe 5, and the slag storage tank 1 is connected to the screening pipe 5 through the water inlet pipe 902.

[0043] On the side of the sedimentation tank 2 away from the slag storage tank 1, there are sedimentation tank 3 and clear water tank 4 with decreasing heights.

[0044] During use, as the heights of the slag storage tank 1, sedimentation tank 2, sludge tank 3, and clear water tank 4 decrease sequentially, the slag water in the slag storage tank 1 flows into the water inlet pipe 902 under its own gravity. The slag water in the water inlet pipe 902 flows into the screening pipe 5. At this time, the drive motor 901 is started, which drives the spiral feed plate 602 to rotate through the rotating shaft 601. The spiral feed plate 602 drives the slag water to gradually move towards the discharge port 501.

[0045] When the slag water flows through the screening screen 603, the suspended solids and solids in the slag water undergo solid-liquid separation through the screening screen 603. The separated liquid flows into the settling tank 2 through the screening screen 603. The separated suspended solids and solids are gradually sent to the discharge port 501 under the action of the spiral feeding plate 602. Since the pitch of the spiral feeding plate 602 gradually decreases from the slag storage tank 1 to the settling tank 2, when the separated suspended solids and solids move to the spiral feeding plate 602 with a small pitch, the suspended solids and solids can be physically squeezed and the water film on their surface can be broken, thereby dehydrating the residual water on the suspended solids and solids again, further ensuring the efficiency of slag water circulation. The suspended solids and solids pushed to the discharge port 501 are collected and processed by the inclined guide plate 502. At the same time, the slag water is further processed through the settling tank 2 and the sludge tank 3 to obtain clean water which is stored in the clean water tank 4. The clean water in the clean water tank 4 is pumped to wash the slag.

[0046] In summary, the variable pitch spiral feed plate 602 can physically compress suspended solids and solids in stages, breaking down the water film of suspended solids and solids, thus improving the dewatering rate of suspended solids and solids. It can not only perform better mechanical dewatering of suspended solids and solids, but also ensure the efficiency of slag water screening and improve the efficiency of slag water circulation.

[0047] Example 2

[0048] Because the slag water contains a lot of solid particles and sticky substances (such as unburned organic matter and fly ash) that are easy to adhere to, the screening screen is easily clogged during continuous operation. Once clogged, the screening efficiency drops sharply, resulting in incomplete liquid separation, high moisture content of solid materials, and directly affecting the processing load and effect of the subsequent settling unit. Therefore, further improvements are made based on the above embodiments.

[0049] like Figures 1 to 7As shown, the adjustment assembly 7 includes an adjustment plate 701 at one end of the rotating shaft 601 away from the slag storage tank 1, and striking rods 702 on both sides of the screening screen 603 near the adjustment plate 701. When the adjustment plate 701 slides along the rotating shaft 601, the adjustment plate 701 can drive the striking rods 702 to strike and vibrate the screening screen 603, and can also drive the screening screen 603 to slide along the screening tube 5.

[0050] The adjustment assembly 7 includes an electric push rod 703 fixedly connected to the rotating shaft 601. The output end of the electric push rod 703 is fixedly connected to the adjustment plate 701. A torque sensor 704 located at the rotating shaft 601 is installed inside the screening tube 5. The torque sensor 704 is wirelessly connected to the electric push rod 703 through the control panel. Power is transmitted to the electric push rod 703 through a slip ring. The adjustment plate 701 is connected to the rotating shaft 601 through the electric push rod 703. The electric push rod 703 drives the adjustment plate 701 to move axially. The rotating shaft 601 drives the adjustment plate 701 to rotate through the electric push rod 703.

[0051] The end of the adjusting plate 701 away from the rotating shaft 601 is provided with a plurality of circumferentially distributed arc-shaped blocks 705. The end of the striking rod 702 near the adjusting plate 701 is fixed with a top rod 707 through an auxiliary plate 706. The top rod 707 can contact the arc-shaped blocks 705.

[0052] A drive rod 708 is slidably connected inside the screening tube 5 and fixedly connected to the screening screen 603. A wedge block 709 is provided at the free end of the drive rod 708. Multiple pressure rods 711 are slidably connected to the circumferential side of the adjusting plate 701 through the first elastic element 710. The wedge block 709 can contact the pressure rod 711 on the corresponding side.

[0053] A protective box 8 is fixed at the end of the screening pipe 5 away from the slag storage tank 1, and the auxiliary plate 706 is connected to the protective box 8 by a second elastic element 712.

[0054] One side of the screening mesh 603 is connected to the screening tube 5 via a third elastic element 604.

[0055] When the screening screen 603 is slightly clogged, causing water accumulation or increased resistance, solid materials accumulate in the screening section due to the blockage (the material becomes pasty because the water cannot be drained), which greatly increases the frictional resistance of the screw conveyor. The torque sensor 704 detects that the torque of the rotating shaft 601 has risen to the first preset value. The torque sensor 704 wirelessly transmits the torque signal to the electric push rod 703 through the control panel. At this time, the electric push rod 703 drives the adjusting plate 701 to slide slightly away from the rotating shaft 601. At this time, the adjusting plate 701 drives the arc block 705 to contact the corresponding top rod 707, and the top rod 707 does not contact the end face of the adjusting plate 701.

[0056] As the adjusting plate 701 drives multiple arc-shaped blocks 705 to rotate, the corresponding arc-shaped blocks 705 drive the striking rod 702 to move towards the protective box 8 via the top rod 707 and the auxiliary plate 706. The second elastic element 712 is compressed. When the arc-shaped blocks 705 no longer press the top rod 707, under the action of the second elastic element 712, the second elastic element 712 releases its elastic force and drives the striking rod 702 to move towards the screening screen 603 via the auxiliary plate 706. The striking rod 702 then strikes the side wall of the screening screen 603. The vibration of the screen 603 causes the suspended matter and solids blocking the screen 603 to loosen under the vibration of the screen 603 and the scraping action of the spiral feed plate 602. This ensures that the screen 603 is unobstructed under the dual action of scraping and vibration of the spiral feed plate 602, thus ensuring the efficiency of slag water screening. After the screen 603 is cleared, the torque sensor 704 detects that the torque has returned to normal, causing the electric push rod 703 to drive the adjusting plate 701 back to the initial position, and the arc block 705 no longer contacts the top rod 707.

[0057] If the torque of the rotating shaft 601 continues to rise to the second preset value, it indicates severe blockage. At this time, the torque sensor 704 transmits the torque signal to the electric push rod 703 through the control panel. The electric push rod 703 then drives the adjusting plate 701 to slide significantly away from the rotating shaft 601. At this time, the adjusting plate 701 drives the arc block 705 to contact the corresponding top rod 707 and the end face of the adjusting plate 701. Meanwhile, the pressure rod 711 and the wedge block 709 are in the same plane. The elastic force of the first elastic element 710 is greater than the centrifugal force generated by the pressure rod 711 rotating with the adjusting plate 701, so as to ensure that the pressure rod 711 remains inside the adjusting plate 701 when it is not squeezed.

[0058] The corresponding arc-shaped block 705 drives the striking rod 702 towards the protective box 8 via the top rod 707 and auxiliary plate 706, causing the second elastic element 712 to be compressed to its limit. When the arc-shaped block 705 no longer presses the top rod 707, under the action of the second elastic element 712, the second elastic element 712 releases a large amount of elastic force, which drives the striking rod 702 towards the screening screen 603 via the auxiliary plate 706. The striking rod 702 violently strikes the side wall of the screening screen 603, causing it to vibrate. At the same time, the pressure rod 711 on the adjusting plate 701 gradually contacts the wedge-shaped surface of the wedge block 709. Due to the first elastic... The elastic force of the elastic element 710 is greater than the sliding friction between the screening mesh 603 and the screening tube 5. It should be noted that sand prevention and sealing measures are provided at the sliding parts of the screening mesh 603 and the screening tube 5 to prevent fine sand from entering the sliding groove and causing jamming. In addition, a wear-resistant flexible sealing strip is provided on the edge of the screening mesh 603 so that the slag water can still be prevented from leaking from the side seam to the sedimentation tank 2 when sliding axially. At this time, the adjusting plate 701 drives the screening mesh 603 to slide through the pressure rod 711 and the wedge block 709. The third elastic element 604 is compressed, so that the part of the screening mesh 603 on the side comes directly under the screening tube 5 for screening.

[0059] When the screening screen 603 slides to its maximum position, the adjusting plate 701 continues to rotate, causing the wedge block 709 to push the pressure rod 711 to slide inward into the adjusting plate 701. The first elastic element 710 is compressed, thereby causing the pressure rod 711 and the wedge block 709 to disengage. The pressure rod 711 continues to rotate with the adjusting plate 701. At this time, under the action of the third elastic element 604, the third elastic element 604 drives the screening screen 603 back to its initial state. When the screening screen 603 resets under the action of the third elastic element 604, due to its inertia or elasticity, it will also generate a secondary vibration effect on the screening screen 603, which can further improve the self-cleaning effect. During the continuous rotation of 01, the screening screen 603 can slide back and forth intermittently along the screening tube 5. At the same time, the striking rod 702 can intermittently and violently strike and vibrate the screening screen 603, which facilitates the cleaning of suspended matter and solids blocked on the screening screen 603, further ensuring the efficiency of slag water treatment. When the screening screen 603 is cleared, the torque sensor 704 detects that the torque has returned to normal, which causes the electric push rod 703 to drive the adjusting plate 701 back to the initial position. The arc block 705 no longer contacts the top rod 707. It should be noted that some parts of the adjusting component 7 and the electric push rod 703 are located inside the protective box 8.

[0060] In summary, by monitoring the torque change of the rotating shaft 601 through the torque sensor 704, the degree of blockage of the screening screen 603 can be indirectly determined. When the screening screen 603 is slightly blocked, the vibration mode is triggered, and the adjustment component 7 drives the striking rod 702 to strike the screening screen 603. The vibration loosens the blockage, and at the same time, the scraping action of the spiral feed plate 602 causes it to fall off. When the screening screen 603 is severely blocked, the powerful vibration and displacement cleaning mode is triggered. While striking strongly, the screening screen 603 is driven to slide back and forth in the tube, so that the screening screen 603 works alternately in different areas and forms shearing and impact on the blockage, resulting in stronger cleaning power and further improving the efficiency of slag water circulation treatment.

[0061] Example 3

[0062] This embodiment provides a method for recycling waste incinerator slag water, including the following steps:

[0063] S1. The slag-water mixture is conveyed to the screening pipe 5 through the water inlet pipe 902;

[0064] S2. Drive the rotating shaft 601 to rotate, thereby driving the spiral feed plate 602 to rotate, conveying the material towards the discharge port 501 of the screening pipe 5, while the liquid passes through the screening screen 603 and enters the sedimentation tank 2.

[0065] S3. When the torque on the rotating shaft 601 changes, the control adjustment plate 701 slides along the rotating shaft 601;

[0066] S4. During the sliding process of the adjusting plate 701, the arc-shaped block 705 on it cooperates with the top rod 707 to drive the striking rod 702 to periodically strike and vibrate the screening screen 603; at the same time, the pressure rod 711 on the adjusting plate 701 cooperates with the wedge block 709 on the screening screen 603 to drive the screening screen 603 to slide along the screening tube 5.

[0067] S5. The dewatered material is discharged from the outlet 501 and enters the sedimentation tank 2 together with the filtered liquid for subsequent sedimentation and separation.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A waste incinerator slag water recycling treatment device, comprising a slag storage tank and a sedimentation tank with progressively decreasing heights, characterized in that, A screening pipe located on the sedimentation tank is fixed to the outside of the slag storage tank. The filtration and dewatering assembly includes a rotating shaft rotatably connected to the screening tube, a spiral feeding plate with varying pitch fixed on the rotating shaft, and a screening screen slidably connected to the side of the screening tube near the settling tank. The adjustment assembly includes an adjustment plate at one end of the rotating shaft away from the slag storage tank, and striking rods on both sides of the screening screen near the adjustment plate. When the adjustment plate slides along the rotating shaft, the adjustment plate can drive the striking rods to strike and vibrate the screening screen, and can also drive the screening screen to slide along the screening tube.

2. The waste incinerator slag water recycling treatment device according to claim 1, characterized in that: The adjustment assembly includes an electric push rod fixedly connected to the rotating shaft, the output end of the electric push rod being fixedly connected to the adjustment plate, and a torque sensor located at the rotating shaft installed inside the screening tube. The torque sensor is wirelessly connected to the electric push rod via a control panel.

3. The waste incinerator slag water recycling treatment device according to claim 1, characterized in that, The adjusting plate has multiple circumferentially distributed arc-shaped blocks at one end away from the rotating shaft, and the striking rod is fixed with a top rod at one end near the adjusting plate via an auxiliary plate, the top rod being able to contact the arc-shaped blocks.

4. The waste incinerator slag water recycling treatment device according to claim 1, characterized in that: A drive rod that is fixedly connected to the screening screen is slidably connected inside the screening tube. A wedge block is provided at the free end of the drive rod. Multiple pressure rods are slidably connected to the circumferential side of the adjusting plate through a first elastic element. The wedge block can contact the pressure rod on the corresponding side.

5. The waste incinerator slag water recycling treatment device according to claim 1, characterized in that: A protective box is fixed to the end of the screening pipe away from the slag storage tank, and the auxiliary plate is connected to the protective box by a second elastic element.

6. The waste incinerator slag water recycling treatment device according to claim 1, characterized in that: One side of the screening mesh is connected to the screening tube via a third elastic element.

7. The waste incinerator slag water recycling treatment device according to claim 1, characterized in that: The end of the screening pipe away from the slag storage tank has an opening facing the sedimentation tank, and the screening pipe is provided with a guide plate located at the discharge port and in an inclined state.

8. The waste incinerator slag water recycling treatment device according to claim 1, characterized in that: The screening tube is equipped with a drive assembly, which includes a drive motor fixedly connected to the rotating shaft. The drive motor is fixedly connected to the screening tube, and the slag storage tank is connected to the screening tube through a water inlet pipe.

9. The waste incinerator slag water recycling treatment device according to claim 1, characterized in that: The sedimentation tank is provided with a sedimentation tank and a clear water tank of decreasing height on the side away from the slag storage tank.

10. A method for recycling waste incinerator slag water, employing a waste incinerator slag water recycling treatment device as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. The slag-water mixture is conveyed through the inlet pipe to the screening pipe; S2. Drive the rotating shaft to rotate, thereby rotating the spiral feeding plate and conveying the material towards the outlet of the screening pipe. At the same time, the liquid passes through the screening screen and enters the sedimentation tank. S3. When the torque on the rotating shaft changes, control the adjusting plate to slide along the rotating shaft; S4. During the sliding process of the adjusting plate, the striking rod is driven to periodically strike and vibrate the screening screen through the cooperation of the arc-shaped block on it and the top rod; at the same time, the screening screen is driven to slide along the screening tube through the cooperation of the pressure rod on the adjusting plate and the wedge block on the screening screen. S5. The dehydrated material is discharged from the outlet, and the filtered liquid enters the sedimentation tank for subsequent sedimentation and separation.

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