Sludge dewatering and solidification treatment device and method

Abstract

The application discloses a sludge dewatering and solidifying treatment device and method, and particularly relates to the field of sludge treatment, which comprises a dewatering tank, the bottom of the dewatering tank is communicated with a drainage groove, and the top of the drainage groove is fixedly installed with a filter plate groove; the application is provided with a filter pressing and discharging mechanism, a protruding side of a filter pressing cylinder is close to and extrudes sludge, so that water in the sludge is discharged from the filter plate groove, and a scraper is driven to carry and discharge the extruded sludge, which is convenient for discharging the sludge after dewatering, achieves the effect of continuously dewatering and discharging the sludge, avoids affecting the efficiency of sludge dewatering and solidifying treatment, and simultaneously sets an feeding mechanism, a pushing and extruding plate strip driven by the continuous rotation of the filter pressing cylinder is close to and extrudes the lifting block, so that the lifting block drives the blocking plate to move upwards and open the feeding tank to add sludge, and the blocking plate is driven to move downwards in the reverse direction to close the feeding tank, so that the sludge can be continuously added for dewatering, and the addition amount of the sludge can be well controlled.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and more specifically, to a sludge dewatering and solidification treatment apparatus and method. Background Technology

[0002] Wastewater treatment processes generate large amounts of sludge with extremely high water content. Sludge treatment typically involves a combination of concentration and dewatering. Even after concentration, the water content remains very high, requiring further dewatering to reduce it. Common dewatering methods include natural drying and mechanical dewatering, as well as electroosmosis.

[0003] However, traditional sludge dewatering and solidification treatment involves squeezing sludge through multiple filter plates. Existing technologies lack a structure that can continuously dewater and solidify sludge, meaning that it is impossible to continuously dewater the sludge or discharge the dewatered and solidified sludge in a timely manner, which affects the efficiency of sludge dewatering and solidification treatment. Meanwhile, existing technologies lack a structure that can add sludge in a timely manner, meaning that sludge cannot be added continuously for dewatering, and it is difficult to control the amount of sludge added, which affects the sludge treatment effect.

[0004] To address the aforementioned technical shortcomings, a solution is provided. Summary of the Invention

[0005] This invention provides a sludge dewatering and solidification treatment device and method to solve the problems mentioned in the background art, namely, the lack of a structure capable of continuous dewatering, solidification and discharge, and the lack of a structure capable of timely adding sludge.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sludge dewatering and solidification treatment device, comprising a dewatering tank, a drainage trough connected to the bottom of the dewatering tank, a filter plate trough fixedly installed on the top of the drainage trough, a pressure filter and discharge mechanism provided inside the dewatering tank, and a feeding mechanism provided on the top of the dewatering tank. The pressure filter and discharge mechanism can reciprocate to squeeze the sludge at the bottom for dewatering and solidification treatment, and promptly push out the dewatered sludge. The feeding mechanism can feed in new sludge with water again after the dewatered sludge is discharged, thereby continuously performing sludge dewatering and solidification treatment.

[0007] In a preferred embodiment, the filter press and discharge mechanism includes a motor fixedly installed on the outer wall of the dewatering tank. A rotating roller is fixedly installed at the output end of the motor. The rotating roller is horizontally positioned. A filter press cylinder is fixedly installed on the outer wall of the rotating roller. The filter press cylinder is eccentrically mounted inside the dewatering tank. The filter press cylinder is cam-shaped. The outer wall of the filter press cylinder and the inner wall of the dewatering tank are mutually fitted.

[0008] In a preferred embodiment, a scraper is fixedly installed on one side of the outer wall of the filter press cylinder. The scraper is arranged vertically, and the outer wall of the scraper is in contact with the inner wall of the dewatering tank. A pushing strip is fixedly installed on one side of the scraper. The pushing strip is arranged in a comb shape and an arc shape. The outer wall of the pushing strip is in contact with the inner wall of the dewatering tank.

[0009] In a preferred embodiment, a discharge box is connected to one bottom side of the dehydration tank. The top of the discharge box is inclined downwards, and a cover plate is rotatably installed on the top of the discharge box. The outer wall of the cover plate fits against the inner wall of the top of the discharge box. Multiple support springs are fixedly installed at the bottom of the cover plate, and the multiple support springs are fixedly installed on the inner wall of the discharge box. A pressure plate is fixedly installed on the top of the cover plate. The pressure plate is set in a vertical state, and the top of the pressure plate is set in an inclined state.

[0010] In a preferred embodiment, a retaining plate is slidably mounted on one side of the cover plate, and a slot is provided on the inner wall of the discharge box. The slot and the retaining plate are mutually matched. Multiple retaining springs are fixedly mounted on the outer wall of one side of the retaining plate. The multiple retaining springs are fixedly mounted on the inner wall of the cover plate. A push strip is fixedly mounted on the top of the retaining plate. The push strip is perpendicular to the retaining plate. A sealing plate is fixedly mounted on the outer wall of the push strip. The bottom of the sealing plate is in contact with the top of the cover plate. The width of the sealing plate is greater than the width of the push strip.

[0011] In a preferred embodiment, the feeding mechanism includes a feeding box connected to one side of the top of the dehydration tank. A material blocking plate is provided on one side of the feeding box. The material blocking plate is slidably installed on the inner wall of the dehydration tank. The material blocking plate is arranged in a vertical state and is tangential to the inner wall of the dehydration tank.

[0012] In a preferred embodiment, a lifting block is fixedly installed on the bottom outer wall of the material blocking plate, the lifting block being perpendicular to the material blocking plate, and a pressure spring is fixedly installed on the top of the material blocking plate, the pressure spring being fixedly installed on the inner wall of the dehydration tank and fitting together.

[0013] In a preferred embodiment, a plurality of pressing rods are fixedly installed on the top of the material blocking plate. The plurality of pressing rods penetrate the outer wall of the dewatering tank. A first toothed plate is fixedly installed on the top of the plurality of pressing rods. A gear is meshed on one side of the first toothed plate. The gear is rotatably installed on the outer wall of the dewatering tank. A second toothed plate is meshed on the other side of the gear. The second toothed plate is slidably installed on the inner wall of the dewatering tank. The second toothed plate penetrates the inner wall of the dewatering tank. The bottom of the second toothed plate is inclined upward.

[0014] A method of using a sludge dewatering and solidification treatment device includes the following steps: Step 1: The motor starts and drives the rotating roller to make the filter press cylinder rotate. The filter press cylinder approaches and squeezes the sludge through its raised side, so that the water in the sludge is discharged from the filter plate groove. The rotation of the filter press cylinder drives the scraper to move the squeezed sludge forward. Step 2: The pushing strip presses the pushing strip before the pressing plate, and the pushing strip drives the blocking plate to move backward to unlock the blocking plate and compress multiple locking springs, so that the blocking plate can rotate. Step 3: The rotating filter press cylinder drives the pushing strips to approach and press the pressure plate before the scraper, which in turn causes the pressure plate to press down, causing the cover plate to deflect downward and compress multiple support springs, thereby opening the discharge box; Step 4: As the filter press continues to rotate, the pushing plates move closer to and press against the lifting block, which in turn causes the lifting block to move the material blocking plate up and open, thus compressing the pressure spring of the material blocking plate. Step 5: After the material blocking plate moves up, it drives multiple pressing rods to move up synchronously. The multiple pressing rods drive the first toothed plate, causing the gear to push the second toothed plate down and extend out of the inner wall of the dehydration tank. Step Six: As the filter press continues to rotate, the pushing strips move past the blocking plate. Then, the pushing strips move closer to the bottom of the second toothed plate, causing the second toothed plate to push the blocking plate downwards and close the feed box.

[0015] The technical effects and advantages of this invention are as follows: 1. This invention sets up a filter press and discharge mechanism, which uses the convex side of the filter press cylinder to approach and squeeze the sludge, so that the water in the sludge is discharged from the filter plate groove, and the scraper drives the squeezed sludge to be discharged, which facilitates the discharge of the dewatered sludge and achieves the effect of continuous dewatering and discharge of sludge, thus avoiding affecting the efficiency of sludge dewatering and solidification treatment.

[0016] 2. Simultaneously, by setting up a feeding mechanism, the pushing plates driven by the continued rotation of the filter press cylinder approach and squeeze the lifting block, thereby causing the lifting block to move the material blocking plate upward to open the feeding box and add sludge. The feeding box is then closed by pushing the material blocking plate downward in the opposite direction, thus enabling continuous addition of sludge for dewatering and controlling the amount of sludge added. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a front view of the present invention.

[0019] Figure 3 This is a partial cross-sectional view of the present invention.

[0020] Figure 4 This is a vertical sectional view of the pressure filter conveying mechanism in this invention.

[0021] Figure 5 This is a partial cross-sectional view of the pressure filter ventilation mechanism in this invention.

[0022] Figure 6 This is a vertical sectional view of the feeding mechanism in this invention.

[0023] Figure 7 This is a partial cross-sectional view of the feeding mechanism in this invention.

[0024] The attached diagram is labeled as follows: 1. Dewatering tank; 2. Drainage trough; 3. Filter plate trough; 4. Filter press drainage mechanism; 41. Motor; 42. Rotary roller; 43. Filter press cylinder; 44. Scraper; 45. Pushing strip; 46. Discharge box; 47. Cover plate; 48. Support spring; 49. Pressure plate; 410. Blocking plate; 411. Positioning spring; 412. Pushing strip; 413. Sealing plate; 5. Feeding mechanism; 51. Feed box; 52. Blocking plate; 53. Lifting block; 54. Pressure spring; 55. Pressing rod; 56. First toothed plate; 57. Gear; 58. Second toothed plate. Detailed Implementation

[0025] 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. Example 1

[0026] Existing technologies lack structures capable of continuous dewatering and solidification, meaning they cannot continuously dewater sludge or promptly discharge the dewatered and solidified sludge, thus affecting the efficiency of sludge dewatering and solidification treatment. To address this issue, the following technical solution is proposed: Refer to the instruction manual appendix Figures 1-7 A sludge dewatering and solidification treatment device and method, such as Figure 1 and Figure 2 As shown, the device includes a dewatering tank 1, a drainage trough 2 connected to the bottom of the dewatering tank 1, a filter plate trough 3 fixedly installed on the top of the drainage trough 2, a pressure filter and discharge mechanism 4 inside the dewatering tank 1, and a feeding mechanism 5 on the top of the dewatering tank 1. The pressure filter and discharge mechanism 4 can reciprocate to squeeze the sludge at the bottom for dewatering and solidification treatment, and push out the dewatered sludge in time. The feeding mechanism 5 can send in new sludge with water after the dewatered sludge is discharged, so as to continuously carry out sludge dewatering and solidification treatment.

[0027] like Figure 1 and Figure 3As shown, the filter press and discharge mechanism 4 includes a motor 41 fixedly installed on the outer wall of the dewatering tank 1. A rotating roller 42 is fixedly installed at the output end of the motor 41. The rotating roller 42 is set in a horizontal state. A filter press cylinder 43 is fixedly installed on the outer wall of the rotating roller 42. The filter press cylinder 43 is eccentrically mounted inside the dewatering tank 1. The filter press cylinder 43 is set in a cam shape. The outer wall of the filter press cylinder 43 and the inner wall of the dewatering tank 1 are mutually matched. The motor 41 starts and drives the rotating roller 42 to rotate the filter press cylinder 43. The filter press cylinder 43 approaches and squeezes the sludge through its raised side, so that the water in the sludge is discharged from the filter plate groove 3.

[0028] like Figure 3 and Figure 4 As shown, a scraper 44 is fixedly installed on one side of the outer wall of the filter press cylinder 43. The scraper 44 is set in a vertical position. The outer wall of the scraper 44 is in contact with the inner wall of the dewatering tank 1. A pushing strip 45 is fixedly installed on one side of the scraper 44. The pushing strip 45 is set in a comb shape and an arc shape. The outer wall of the pushing strip 45 is in contact with the inner wall of the dewatering tank 1. The rotation of the filter press cylinder 43 drives the scraper 44 to move the squeezed sludge forward.

[0029] like Figure 4 and Figure 5 As shown, a discharge box 46 is connected to the bottom of one side of the dehydration tank 1. The top of the discharge box 46 is inclined downward. A cover plate 47 is rotatably installed on the top of the discharge box 46. The outer wall of the cover plate 47 is in contact with the inner wall of the top of the discharge box 46. Multiple support springs 48 are fixedly installed at the bottom of the cover plate 47. Multiple support springs 48 are fixedly installed on the inner wall of the discharge box 46. A pressure plate 49 is fixedly installed on the top of the cover plate 47. The pressure plate 49 is set in a vertical state. The top of the pressure plate 49 is set in an inclined state. The pushing strips 45 driven by the rotation of the filter press cylinder 43 approach and squeeze the pressing plate 49 before the scraper 44, which in turn causes the pressing plate 49 to press down, causing the cover plate 47 to deflect downward and compress multiple support springs 48, thereby opening the discharge box 46 to facilitate the discharge of dewatered sludge.

[0030] like Figure 4 and Figure 5As shown, a blocking plate 410 is slidably installed on one side of the cover plate 47. A slot is opened on the inner wall of the discharge box 46. The slot and the blocking plate 410 are mutually matched. Multiple locking springs 411 are fixedly installed on the outer wall of one side of the blocking plate 410. Multiple locking springs 411 are fixedly installed on the inner wall of the cover plate 47. A push strip 412 is fixedly installed on the top of the blocking plate 410. The push strip 412 and the blocking plate 410 are mutually perpendicular. A sealing plate 413 is fixedly installed on the outer wall of the push strip 412. The bottom of the sealing plate 413 is in contact with the top of the cover plate 47. The width of the sealing plate 413 is greater than the width of the push strip 412. The sealing plate 413 can seal the area of ​​the push strip 412's movement space to prevent sludge from directly entering the discharge box 46. The driven pushing strip 45 presses the pushing strip 412 before the pressing plate 49. The pushing strip 412 drives the locking plate 410 to move backward, unlocking the locking plate 410 and compressing multiple locking springs 411, so that the locking plate 410 can rotate.

[0031] In practical implementation, the motor 41 starts and drives the rotating roller 42 to rotate the filter press cylinder 43. The filter press cylinder 43 approaches and squeezes the sludge through its raised side, so that the water in the sludge is discharged from the filter plate groove 3. The rotation of the filter press cylinder 43 drives the scraper 44 to move the squeezed sludge forward. The driven pushing strip 45 squeezes the pushing strip 412 before the pressing plate 49. The pushing strip 412 drives the blocking plate 410 to move backward, unlocking the blocking plate 410 and compressing multiple locking springs 411, so that the blocking plate 410 can rotate. The pushing strip 45 driven by the rotation of the filter press cylinder 43 approaches and squeezes the pressing plate 49 before the scraper 44, so that the pressing plate 49 presses down, causing the cover plate 47 to deflect downward and compress multiple support springs 48, thereby opening the discharge box 46, which facilitates the discharge of the dewatered sludge, achieving the effect of continuous dewatering and discharge of sludge, and avoiding affecting the efficiency of sludge dewatering and solidification treatment. Example 2

[0032] Existing technologies lack a structure that allows for the timely addition of sludge, meaning that sludge cannot be continuously added for dewatering, and the amount of sludge added is difficult to control, affecting the sludge treatment effect. To solve this problem, the following technical solution is proposed: like Figure 6 and Figure 7 As shown, the feeding mechanism 5 includes a feeding box 51 connected to one side of the top of the dehydration box 1. A baffle plate 52 is provided on one side of the feeding box 51. The baffle plate 52 is slidably installed on the inner wall of the dehydration box 1. The baffle plate 52 is set in a vertical state and is tangent to the inner wall of the dehydration box 1. The feed box 51 can carry the sludge with water into the dewatering box 1, while the baffle plate 52 can block the sludge from entering the feed box 51.

[0033] like Figure 6 and Figure 7 As shown, a lifting block 53 is fixedly installed on the bottom outer wall of the material blocking plate 52. The lifting block 53 and the material blocking plate 52 are arranged perpendicular to each other. A pressure spring 54 is fixedly installed on the top of the material blocking plate 52. The pressure spring 54 is fixedly installed on the inner wall of the dehydration tank 1 and fits against each other. As the filter press cylinder 43 continues to rotate, the pushing strip 45 moves closer to and presses against the lifting block 53, which in turn causes the lifting block 53 to move the material blocking plate 52 upward and open, thus the material blocking plate 52 compresses the pressure spring 54.

[0034] like Figure 6 and Figure 7 As shown, a plurality of pressing rods 55 are fixedly installed on the top of the material blocking plate 52. The plurality of pressing rods 55 penetrate the outer wall of the dewatering tank 1. A first toothed plate 56 is fixedly installed on the top of the plurality of pressing rods 55. A gear 57 is meshed on one side of the first toothed plate 56. The gear 57 is rotatably installed on the outer wall of the dewatering tank 1. A second toothed plate 58 is meshed on the other side of the gear 57. The second toothed plate 58 is slidably installed on the inner wall of the dewatering tank 1. The second toothed plate 58 penetrates the inner wall of the dewatering tank 1. The bottom of the second toothed plate 58 is inclined upward. After the material blocking plate 52 moves upward, it drives multiple pressing rods 55 to move upward synchronously. The multiple pressing rods 55 drive the first toothed plate 56, causing the gear 57 to push the second toothed plate 58 downward and extend out of the inner wall of the dewatering box 1. Then, after the filter press cylinder 43 continues to rotate and drives the pushing strip 45 to pass over the material blocking plate 52, the pushing strip 45 then approaches the bottom of the pushing second toothed plate 58, thereby causing the second toothed plate 58 to push the material blocking plate 52 downward in the opposite direction and close the feed box 51.

[0035] In practice, as the filter press cylinder 43 continues to rotate, the pushing strips 45 move closer to and press against the lifting block 53, causing the lifting block 53 to move the material blocking plate 52 upward and open. The material blocking plate 52 then compresses the pressure spring 54. After the material blocking plate 52 moves upward, it drives multiple pressing rods 55 to move upward simultaneously. The multiple pressing rods 55 drive the first toothed plate 56, causing the gear 57 to push the second toothed plate 58 downward and extend it out of the inner wall of the dewatering box 1. After the pushing strips 45, driven by the continued rotation of the filter press cylinder 43, pass over the material blocking plate 52, the pushing strips 45 move closer to and push the bottom of the second toothed plate 58, causing the second toothed plate 58 to push the material blocking plate 52 downward and close the feed box 51. This allows for continuous addition of sludge for dewatering while controlling the amount of sludge added.

[0036] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sludge dewatering and solidification treatment device, comprising a dewatering tank (1), wherein a drainage trough (2) is connected to the bottom of the dewatering tank (1), and a filter plate trough (3) is fixedly installed on the top of the drainage trough (2), characterized in that, The dewatering tank (1) is equipped with a filter press and discharge mechanism (4) inside, and a feeding mechanism (5) is provided on the top of the dewatering tank (1). The filter press and discharge mechanism (4) can reciprocate to squeeze the sludge at the bottom for dewatering and solidification treatment, and push out the dewatered sludge in time. The feeding mechanism (5) can send new sludge with water back in after the dewatered sludge is discharged, and continuously carry out sludge dewatering and solidification treatment.

2. The sludge dewatering and solidification treatment device according to claim 1, characterized in that: The filter press and discharge mechanism (4) includes a motor (41) fixedly installed on the outer wall of the dewatering tank (1). A rotating roller (42) is fixedly installed at the output end of the motor (41). The rotating roller (42) is set in a horizontal state. A filter press cylinder (43) is fixedly installed on the outer wall of the rotating roller (42). The filter press cylinder (43) is eccentrically mounted inside the dewatering tank (1). The filter press cylinder (43) is set in a cam shape. The outer wall of the filter press cylinder (43) and the inner wall of the dewatering tank (1) are mutually matched.

3. The sludge dewatering and solidification treatment device according to claim 2, characterized in that: A scraper (44) is fixedly installed on one side of the outer wall of the filter press (43). The scraper (44) is set in a vertical position. The outer wall of the scraper (44) is in contact with the inner wall of the dewatering tank (1). A pushing strip (45) is fixedly installed on one side of the scraper (44). The pushing strip (45) is set in a comb shape. The pushing strip (45) is set in an arc shape. The outer wall of the pushing strip (45) is in contact with the inner wall of the dewatering tank (1).

4. The sludge dewatering and solidification treatment device according to claim 3, characterized in that: The bottom of one side of the dehydration tank (1) is connected to a discharge box (46). The top of the discharge box (46) is inclined downward. A cover plate (47) is rotatably installed on the top of the discharge box (46). The outer wall of the cover plate (47) is in contact with the inner wall of the top of the discharge box (46). Multiple support springs (48) are fixedly installed at the bottom of the cover plate (47). Multiple support springs (48) are fixedly installed on the inner wall of the discharge box (46). A pressure plate (49) is fixedly installed on the top of the cover plate (47). The pressure plate (49) is set in a vertical state. The top of the pressure plate (49) is set in an inclined state.

5. The sludge dewatering and solidification treatment device according to claim 4, characterized in that: A retaining plate (410) is slidably installed on one side of the cover plate (47). A slot is opened on the inner wall of the discharge box (46). The slot and the retaining plate (410) are mutually matched. A plurality of retaining springs (411) are fixedly installed on the outer wall of one side of the retaining plate (410). The plurality of retaining springs (411) are fixedly installed on the inner wall of the cover plate (47). A push strip (412) is fixedly installed on the top of the retaining plate (410). The push strip (412) and the retaining plate (410) are mutually perpendicular. A sealing plate (413) is fixedly installed on the outer wall of the push strip (412). The bottom of the sealing plate (413) is in contact with the top of the cover plate (47). The width of the sealing plate (413) is greater than the width of the push strip (412).

6. The sludge dewatering and solidification treatment device according to claim 1, characterized in that: The feeding mechanism (5) includes a feeding box (51) connected to the top side of the dehydration box (1). A baffle plate (52) is provided on one side of the feeding box (51). The baffle plate (52) is slidably installed on the inner wall of the dehydration box (1). The baffle plate (52) is set in a vertical state and is tangential to the inner wall of the dehydration box (1).

7. The sludge dewatering and solidification treatment device according to claim 6, characterized in that: A lifting block (53) is fixedly installed on the bottom outer wall of the material blocking plate (52). The lifting block (53) and the material blocking plate (52) are arranged perpendicular to each other. A pressure spring (54) is fixedly installed on the top of the material blocking plate (52). The pressure spring (54) is fixedly installed on the inner wall of the dehydration tank (1) and fits against each other.

8. The sludge dewatering and solidification treatment device according to claim 7, characterized in that: Multiple pressing rods (55) are fixedly installed on the top of the material blocking plate (52). The multiple pressing rods (55) penetrate the outer wall of the dehydration tank (1). A first toothed plate (56) is fixedly installed on the top of the multiple pressing rods (55). A gear (57) is meshed on one side of the first toothed plate (56). The gear (57) is rotatably installed on the outer wall of the dehydration tank (1). A second toothed plate (58) is meshed on the other side of the gear (57). The second toothed plate (58) is slidably installed on the inner wall of the dehydration tank (1). The second toothed plate (58) penetrates the inner wall of the dehydration tank (1). The bottom of the second toothed plate (58) is inclined upward.

9. A method of using a sludge dewatering and solidification treatment device, comprising the sludge dewatering and solidification treatment device as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: The motor (41) starts and drives the rotating roller (42) to make the filter press (43) rotate. The filter press (43) approaches and squeezes the sludge through its raised side, so that the water in the sludge is discharged from the filter plate groove (3). The rotation of the filter press (43) drives the scraper (44) to move the squeezed sludge forward. Step 2: The pushing strip (45) squeezes the pushing strip (412) before the pressing plate (49). The pushing strip (412) drives the blocking plate (410) to move backward and unlock the blocking plate (410) to compress multiple locking springs (411), so that the blocking plate (410) can rotate. Step 3: The rotating filter cylinder (43) drives the pushing strip (45) to approach and squeeze the pressing plate (49) before the scraper (44), which in turn causes the pressing plate (49) to press down and drive the cover plate (47) to deflect downward and compress multiple support springs (48), thereby opening the discharge box (46). Step 4: The filter press cylinder (43) continues to rotate, driving the pushing strip (45) to approach and squeeze the lifting block (53), which in turn causes the lifting block (53) to drive the material blocking plate (52) to move up and open, and then the material blocking plate (52) compresses the pressure spring (54). Step 5: After the material blocking plate (52) moves upward, it drives multiple pressing rods (55) to move upward synchronously. The multiple pressing rods (55) drive the first toothed plate (56) so that the gear (57) pushes the second toothed plate (58) to move downward and extend out of the inner wall of the dehydration tank (1). Step 6: After the filter press cylinder (43) continues to rotate and drives the pushing strip (45) past the blocking plate (52), the pushing strip (45) then approaches the bottom of the pushing second toothed plate (58), thereby causing the second toothed plate (58) to push the blocking plate (52) down in the opposite direction and close the feed box (51).

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