A sewage plant sludge dewatering device

Abstract

The present application relates to the technical field of sludge dewatering, and discloses a sewage plant sludge dewatering device, which comprises a main machine base, the outer wall of the main machine base is provided with an extrusion forming assembly, the top of the main machine base is fixedly provided with an inclined rod, the top of the inclined rod is fixedly provided with a dewatering box, and the outer wall of one end of the dewatering box is fixedly provided with a support frame. Through the signal emission of the electric control cabinet, the rotating motor can start to work, so that the rotating rod can drive the extrusion roller one to rotate, the driven gear can drive the adjusting gear to rotate at the same time, the extrusion roller two can rotate inward at the same time, the sludge can be dewatered twice, and the sludge can be extruded and formed during the dewatering process. The device can reduce the sludge with a water content of 80%-85% to below 20%, realizes deep dewatering of the sludge, improves the dewatering efficiency of the sludge, and reduces the overall environmental impact of sludge treatment.

Description

Technical Field

[0001] This invention relates to the field of sludge dewatering technology, specifically to a sludge dewatering device for a wastewater treatment plant. Background Technology

[0002] Sludge dewatering equipment in wastewater treatment plants is a key part of the wastewater treatment process. Its purpose is to remove water from the sludge to facilitate its transportation and disposal.

[0003] Traditional sludge dewatering involves spreading the sludge on a natural or artificial filter bed to dry, using solar, wind, and air energy to evaporate the moisture from the inside out. However, this method is suitable for areas with dry climates and ample space, but it is also time-consuming. Existing sludge dewatering equipment in wastewater treatment plants has high energy consumption and is complex to maintain. Furthermore, after dewatering, the sludge falls in a sludge-like form, which is inconvenient for transportation and subsequent collection. Therefore, improvements are needed. Summary of the Invention

[0004] This invention provides a sludge dewatering device for wastewater treatment plants, which can automatically shape the dewatered sludge and complete the automatic feeding process, resulting in high working efficiency and improved sludge utilization. This solves the problems mentioned in the background art.

[0005] This invention provides the following technical solution: a sludge dewatering device for a wastewater treatment plant, comprising a main unit base, an extrusion molding assembly on the outer wall of the main unit base, a diagonal rod fixedly mounted on the top of the main unit base, a dewatering tank fixedly mounted on the top of the diagonal rod, a support frame fixedly mounted on the outer wall of one end of the dewatering tank, and a water inlet cylinder fixedly mounted on the outer wall of the other end of the dewatering tank, a main shaft motor fixedly mounted on the outer wall of the support frame, a sludge discharge hopper fixedly mounted on the bottom of the support frame, an automatic feeding assembly at the bottom of the extrusion molding assembly, a lead screw fixedly mounted on the power output shaft of the main shaft motor, a stacked screw main assembly on the inner wall of the dewatering tank, and a flip-top on the top of the dewatering tank.

[0006] As a preferred embodiment of the present invention, one end of a connecting water pipe is fixedly mounted on the top of the water inlet cylinder, and a mixing box is installed on the other end of the connecting water pipe. A support plate is fixedly mounted on the top of the mixing box, and a stirring motor is fixedly mounted on the top of the support plate. A stirring shaft is fixedly mounted on the power output shaft of the stirring motor, and stirring blades are fixedly mounted on the outer wall of the stirring shaft. A partition layer is provided on the inner wall of the mixing box.

[0007] As a preferred embodiment of the present invention, a flocculation box and a fixing device are fixedly installed on the outer wall of the mixing tank. A water inlet pipe is snapped into the inner wall of the fixing device. One end of a connecting water pipe is fixedly installed on the outer wall of the water inlet pipe. A through pipe is fixedly installed on the other end of the connecting water pipe. A flushing pipe is fixedly installed on the outer wall of the through pipe. A high-pressure nozzle is fixedly installed on the outer wall of the flushing pipe.

[0008] As a preferred embodiment of the present invention, a crossbeam is installed at the bottom of the dehydration tank, and a water collection trough is provided at the bottom of the crossbeam. A sewage overflow port and a sewage inlet are fixedly installed at the bottom of the flocculation tank. A dosing pipe is fixedly installed on the outer wall of the flocculation tank. A support base is installed at the bottom of the mixing tank, and a base plate is fixedly installed on the outer wall of the support base. An electrical control cabinet is fixedly installed on the top of the base plate. An overflow pipe is provided on the inner wall of the flocculation tank, and a drain port is fixedly installed on the outer wall of the water collection trough near the mixing tank.

[0009] As a preferred embodiment of the present invention, the extrusion molding assembly includes a vertical plate, a rotating motor is fixedly installed on the outer wall of the vertical plate, a rotating rod is fixedly mounted on the power output shaft of the rotating motor, an extrusion roller is fixedly sleeved on the outer wall of the rotating rod, a sliding groove is formed on the outer wall of the vertical plate, a slider is slidably connected to the inner wall of the sliding groove, a threaded rod is fixedly mounted on the outer wall of the slider, and a handle is fixedly installed on the outer wall of the threaded rod.

[0010] As a preferred embodiment of the present invention, a central rod is rotatably sleeved on the inner wall of the slider, a second extrusion roller is sleeved on the outer wall of the central rod, an adjusting gear is fixedly sleeved on the outer wall of the central rod, a limit gear and a driven gear are respectively meshed on the outer wall of the adjusting gear, a rotating gear is meshed on the outer wall of the driven gear, a connecting handle is rotatably sleeved on the outer wall of the adjusting gear, and a connecting handle is rotatably connected to the outer wall of the connecting handle.

[0011] As a preferred embodiment of the present invention, the rotating motor is electrically connected to the electrical control cabinet, and there are two sliders, two threaded rods and two handles, which are symmetrically distributed at both ends of the extrusion roller two. The outer wall of the threaded rod is threadedly connected to the inner wall of the vertical plate.

[0012] As a preferred embodiment of the present invention, the automatic feeding assembly includes a servo motor, a rotating shaft fixedly mounted on the power output shaft of the servo motor, a limit plate sleeved on the outer wall of the rotating shaft, a connecting block fixedly mounted on the outer wall of the rotating shaft, a round rod fixedly mounted on the inner wall of the connecting block, a tension spring movably sleeved on the outer wall of the round rod, a right-angle plate fixedly mounted on the bottom of the connecting block, a push plate rotatably connected to the outer wall of the right-angle plate, a support rod slidably connected to the inner wall of the push plate, a slide rod slidably sleeved on the inner wall of the support rod, mounting plates mounted on both ends of the slide rod, and a mud plate fixedly mounted on the top of the mounting plate.

[0013] As a preferred embodiment of the present invention, the servo motor is electrically connected to the electrical control cabinet, the two ends of the mud plate are fixedly installed between the two vertical plates, the top of the limiting plate is fixedly installed at the bottom of the mud plate, and a square groove is provided at the bottom of the mud plate, the width of which is adapted to the top width of the push plate.

[0014] As a preferred embodiment of the present invention, the stacked screw main body assembly includes a spiral shaft, spiral blades are fixedly installed on the outer wall of the spiral shaft, and a fixed ring and a movable ring are respectively sleeved on the outer wall of the spiral blades. The outer wall of the fixed ring is provided with an installation groove, and the outer wall of the movable ring is provided with a filter hole.

[0015] The pitch of the spiral blades gradually decreases from one end of the mixing tank to one end of the extrusion molding assembly. There are three sets of stacked spiral main components, and the three sets of stacked spiral main components are evenly distributed on the inner wall of the dehydration tank. The fixed ring and the movable ring are alternately distributed on the outer wall of the spiral blades.

[0016] The present invention has the following beneficial effects:

[0017] 1. The sludge dewatering device of this wastewater treatment plant, through the signal emitted by the electrical control cabinet, enables the rotating motor to start working, thereby causing the rotating rod to drive the first extrusion roller to rotate. This causes the driven gear to drive the adjusting gear to rotate simultaneously, allowing the second extrusion roller to rotate inward with the first extrusion roller, thus performing secondary dewatering of the sludge. During the dewatering process, the sludge is also compressed and shaped. This device can reduce the moisture content of sludge from 80% to 85% to below 20%, achieving deep dewatering of the sludge. This not only improves the dewatering efficiency of the sludge but also reduces the overall environmental impact of sludge treatment.

[0018] 2. The sludge dewatering device of this sewage treatment plant can start the servo motor by transmitting a signal from the electrical control cabinet, thereby driving the rotating shaft to rotate and the connecting block to rotate. The connecting block can slide on the outer wall of the round rod, and through the right angle plate, the push plate can slide on the inner wall of the square groove opened at the bottom of the mud plate. Thus, the top of the push plate can automatically unload the mud block formed on the top of the mud plate. This allows for continuous operation, high working efficiency, and improves the utilization rate of sludge.

[0019] 3. The sludge dewatering device for this wastewater treatment plant, with its fixed and movable rings alternately distributed on the outer wall of the spiral blades, allows for multi-layered filtration. The spiral blades rotate and push, while filter holes are created on the outer wall of the movable rings, improving upon traditional machines. This allows the device to be suitable for dewatering various types of sludge and separating solids and liquids from slag materials, thus effectively improving the sludge dewatering efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure on the other side of the present invention;

[0022] Figure 3 This is a schematic diagram of the top structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the bottom structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the present invention;

[0026] Figure 7 This is a partial structural diagram of the present invention;

[0027] Figure 8 This is a schematic diagram of the extrusion molding component structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the mud discharge hopper structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the automatic feeding component structure of the present invention;

[0030] Figure 11 This is a schematic diagram of the filter pore structure of the present invention;

[0031] Figure 12 For the present invention Figure 7 Enlarged structural diagram at point A in the middle.

[0032] In the diagram: 1. Main unit base; 2. Extrusion molding assembly; 3. Inclined bar; 4. Dewatering tank; 5. Support frame; 6. Main shaft motor; 7. Sludge discharge hopper; 8. Automatic feeding assembly; 9. Flip cover; 10. Lead screw; 11. Screw press main assembly;

[0033] 201. Vertical plate; 202. Rotating motor; 203. Rotating rod; 204. Extrusion roller one; 205. Slide groove; 206. Sliding block; 207. Threaded rod; 208. Handle; 209. Center rod; 210. Extrusion roller two; 211. Adjusting gear; 212. Limiting gear; 213. Connecting handle one; 214. Connecting handle two; 215. Rotating gear; 216. Driven gear; 12. Water inlet cylinder; 13. Connecting water pipe one; 14. Mixing tank; 1 5. Support plate; 16. Agitator motor; 17. Agitator shaft; 18. Agitator blades; 19. Separator layer; 20. Flocculation box; 21. Fixing device; 22. Water inlet pipe; 23. Connecting water pipe II; 24. Through pipe; 25. Flushing pipe; 26. High-pressure nozzle; 27. Crossbeam; 28. Water collection tank; 29. ​​Sewage overflow outlet; 30. Sewage inlet; 31. Chemical dosing pipe; 32. Support base; 33. Base plate; 34. Electrical control cabinet; 35. Overflow pipe; 36. Drain outlet;

[0034] 801. Servo motor; 802. Rotating shaft; 803. Limiting plate; 804. Connecting block; 805. Round rod; 806. Tension spring; 807. Right angle plate; 808. Push plate; 809. Support rod; 810. Slide rod; 811. Mounting plate; 812. Mud plate;

[0035] 1101, Helical shaft; 1102, Helical blades; 1103, Fixed ring; 1104, Moving ring; 1105, Mounting groove; 1106, Filter hole. Detailed Implementation

[0036] 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.

[0037] Please see Figure 1 - Figure 12A sludge dewatering device for a wastewater treatment plant includes a main base 1, an extrusion molding component 2 on the outer wall of the main base 1, a diagonal rod 3 fixedly mounted on the top of the main base 1, a dewatering tank 4 fixedly mounted on the top of the diagonal rod 3, a support frame 5 fixedly mounted on the outer wall of one end of the dewatering tank 4, and a water inlet cylinder 12 fixedly mounted on the outer wall of the other end of the dewatering tank 4. A main shaft motor 6 is fixedly mounted on the outer wall of the support frame 5, a sludge discharge hopper 7 is fixedly mounted on the bottom of the support frame 5, an automatic feeding component 8 is provided at the bottom of the extrusion molding component 2, a lead screw 10 is fixedly mounted on the power output shaft of the main shaft motor 6, a stacked screw main body component 11 is provided on the inner wall of the dewatering tank 4, and a flip cover 9 is provided on the top of the dewatering tank 4.

[0038] By utilizing the above structure, the device as a whole is supported by the main unit base 1 and the support base 32, which can increase the stability of the device in dewatering sludge when it is placed.

[0039] In a preferred embodiment, one end of a connecting water pipe 13 is fixedly mounted on the top of the water inlet cylinder 12, and a mixing box 14 is installed on the other end of the connecting water pipe 13. A support plate 15 is fixedly mounted on the top of the mixing box 14, and a stirring motor 16 is fixedly mounted on the top of the support plate 15. A stirring shaft 17 is fixedly mounted on the power output shaft of the stirring motor 16, and stirring blades 18 are fixedly mounted on the outer wall of the stirring shaft 17. A partition layer 19 is provided on the inner wall of the mixing box 14.

[0040] Using the above structure, the stirring motor 16 can be started by transmitting a signal through the electrical control cabinet 34, which in turn enables the stirring shaft 17 to rotate and the stirring blades 18 to stir the inner wall of the mixing tank 14, so that the liquid on the inner wall of the mixing tank 14 can be mixed evenly.

[0041] In a preferred embodiment, a flocculation box 20 and a fixture 21 are fixedly installed on the outer wall of the mixing tank 14. A water inlet pipe 22 is snapped into the inner wall of the fixture 21. One end of a connecting water pipe 23 is fixedly mounted on the outer wall of the water inlet pipe 22. A through pipe 24 is fixedly installed on the other end of the connecting water pipe 23. A flushing pipe 25 is fixedly installed on the outer wall of the through pipe 24. A high-pressure nozzle 26 is fixedly mounted on the outer wall of the flushing pipe 25.

[0042] Using the above structure, water can be connected to the bottom of the inlet pipe 22, allowing the water to enter the interior of the through pipe 24 through the connecting water pipe 23 and be diverted to the inner wall of the flushing pipe 25. This allows the high-pressure nozzle 26 to spray water to flush the inner wall of the dehydration tank 4, effectively preventing blockage and extending the service life of the device.

[0043] In a preferred embodiment, a crossbeam 27 is installed at the bottom of the dehydration tank 4, and a water collection trough 28 is provided at the bottom of the crossbeam 27. A sewage overflow port 29 and a sewage inlet 30 are fixedly installed at the bottom of the flocculation tank 20. A dosing pipe 31 is fixedly installed on the outer wall of the flocculation tank 20. A support base 32 is installed at the bottom of the mixing tank 14. A base plate 33 is fixedly installed on the outer wall of the support base 32. An electrical control cabinet 34 is fixedly installed on the top of the base plate 33. An overflow pipe 35 is provided on the inner wall of the flocculation tank 20. A drain port 36 is fixedly installed on the outer wall of the water collection trough 28 on the side near the mixing tank 14.

[0044] Using the above structure, the drain outlet 36 can discharge the water source after dewatering the sludge collected on the inner wall of the water collection tank 28 and the sewage after rinsing the inner wall of the dewatering tank 4, ensuring that the inner wall of the water collection tank 28 is always empty, which facilitates the operation of the equipment.

[0045] In a preferred embodiment, the extrusion molding assembly 2 includes a vertical plate 201, a rotary motor 202 is fixedly mounted on the outer wall of the vertical plate 201, a rotating rod 203 is fixedly mounted on the power output shaft of the rotary motor 202, an extrusion roller 204 is fixedly sleeved on the outer wall of the rotating rod 203, a groove 205 is provided on the outer wall of the vertical plate 201, a slider 206 is slidably connected to the inner wall of the groove 205, a threaded rod 207 is fixedly mounted on the outer wall of the slider 206, and a handle 208 is fixedly mounted on the outer wall of the threaded rod 207.

[0046] In a preferred embodiment, a central rod 209 is rotatably sleeved on the inner wall of the slider 206, a second extrusion roller 210 is sleeved on the outer wall of the central rod 209, an adjusting gear 211 is fixedly sleeved on the outer wall of the central rod 209, the outer wall of the adjusting gear 211 meshes with a limit gear 212 and a driven gear 216 respectively, the outer wall of the driven gear 216 meshes with a rotating gear 215, a connecting handle 213 is rotatably sleeved on the outer wall of the adjusting gear 211, and a connecting handle 214 is rotatably connected to the outer wall of the connecting handle 213.

[0047] Using the above structure, by rotating the handle 208, the threaded rod 207 can be rotated, which can drive the slider 206 to slide on the inner wall of the groove 205. The adjusting gear 211 can be rotated in the direction of meshing with the limiting gear 212, which in turn allows the second extrusion roller 210 to move away from the first extrusion roller 204. The distance between the first extrusion roller 204 and the second extrusion roller 210 can be adjusted, making the device more functional.

[0048] In a preferred embodiment, the rotating motor 202 is electrically connected to the electrical control cabinet 34. There are two sliders 206, two threaded rods 207 and two handles 208. The two sliders 206, two threaded rods 207 and two handles 208 are symmetrically distributed at both ends of the extrusion roller 210. The outer wall of the threaded rod 207 is threadedly connected to the inner wall of the vertical plate 201.

[0049] Using the above structure, the rotating motor 202 can start working by transmitting a signal through the electrical control cabinet 34. This allows the rotating rod 203 to drive the first extrusion roller 204 to rotate, so that the driven gear 216 can drive the adjusting gear 211 to rotate at the same time. This allows the second extrusion roller 210 and the first extrusion roller 204 to rotate inward while performing secondary dewatering of the sludge. During the dewatering process, the sludge can be squeezed and shaped, so that the sludge can fall off in blocks.

[0050] In a preferred embodiment, the automatic feeding assembly 8 includes a servo motor 801, a rotating shaft 802 fixedly mounted on the power output shaft of the servo motor 801, a limit plate 803 sleeved on the outer wall of the rotating shaft 802, a connecting block 804 fixedly mounted on the outer wall of the rotating shaft 802, a round rod 805 fixedly mounted on the inner wall of the connecting block 804, a tension spring 806 movably sleeved on the outer wall of the round rod 805, a right-angle plate 807 fixedly mounted on the bottom of the connecting block 804, a push plate 808 rotatably connected to the outer wall of the right-angle plate 807, a support rod 809 slidably connected to the inner wall of the push plate 808, a slide rod 810 slidably sleeved on the inner wall of the support rod 809, mounting plates 811 mounted on both ends of the slide rod 810, and a mud plate 812 fixedly mounted on the top of the mounting plate 811.

[0051] Using the above structure, the tension spring 806 enables the push plate 808 to automatically reset after sliding by utilizing the elasticity of the tension spring 806, allowing it to work continuously. At the same time, due to the setting of the limiting plate 803 and the installation position of the limiting plate 803, it can be seen that the limiting plate 803 can limit and fix the rotating shaft 802.

[0052] In a preferred embodiment, the servo motor 801 is electrically connected to the electrical control cabinet 34, the two ends of the mud plate 812 are fixedly installed between the two upright plates 201, the top of the limiting plate 803 is fixedly installed at the bottom of the mud plate 812, and a square groove is provided at the bottom of the mud plate 812, and the width of the square groove is adapted to the top width of the push plate 808.

[0053] Using the above structure, the servo motor 801 can start working by transmitting a signal through the electrical control cabinet 34, thereby driving the rotating shaft 802 to rotate and driving the connecting block 804 to rotate. The connecting block 804 can slide on the outer wall of the round rod 805, and the push plate 808 can slide on the inner wall of the square groove opened at the bottom of the mud plate 812 through the right angle plate 807. Thus, the top of the push plate 808 can automatically unload the mud block formed on the top of the mud plate 812.

[0054] In a preferred embodiment, the stacked screw main body assembly 11 includes a spiral shaft 1101, spiral blades 1102 are fixedly installed on the outer wall of the spiral shaft 1101, and fixed rings 1103 and movable rings 1104 are respectively sleeved on the outer wall of the spiral blades 1102. The outer wall of the fixed ring 1103 is provided with an installation groove 1105, and the outer wall of the movable ring 1104 is provided with a filter hole 1106.

[0055] The pitch of the spiral blade 1102 gradually decreases from one end of the mixing tank 14 to one end of the extrusion molding component 2. There are three sets of stacked screw main components 11, and the three sets of stacked screw main components 11 are evenly distributed on the inner wall of the dehydration tank 4. The fixed ring 1103 and the movable ring 1104 are alternately distributed on the outer wall of the spiral blade 1102.

[0056] Utilizing the above structure, and considering the alternating distribution of fixed ring 1103 and movable ring 1104 on the outer wall of spiral blade 1102, it can be seen that the outer wall of spiral blade 1102 can employ multi-overlapping plates for filtration. Furthermore, by using the spiral rotation of spiral blade 1102 to push and press, and simultaneously opening filter holes 1106 on the outer wall of movable ring 1104, the traditional machine can be improved, making the device suitable for dewatering various sludge and solid-liquid separation of slag materials.

[0057] Working principle: When using this device, the pump body adsorbs sludge onto the inner wall of the flocculation tank 20, and the dosing pipe 31 adds chemicals to the inner wall of the mixing tank 14. The electrical control cabinet 34 sends a signal to start the stirring motor 16, which in turn rotates the stirring shaft 17 and causes the stirring blades 18 to stir the inner wall of the mixing tank 14. This ensures that the liquid inside the mixing tank 14 is mixed evenly, improving its dewatering performance. The mixed liquid can then be passed through a continuous flow... Water pipe 13 enters the inner wall of the inlet cylinder 12, and is pushed by the spiral blades 1102. At the same time, filter holes 1106 are opened on the outer wall of the movable ring 1104. This improves the traditional machine, making the device suitable for dewatering various sludge and solid-liquid separation of sludge materials. The water removed from the sludge falls onto the inner wall of the water collection tank 28, while the dewatered sludge falls between the first extrusion roller 204 and the second extrusion roller 210. The rotating motor 202 can start working by transmitting a signal through the electrical control cabinet 34. This allows the rotating rod 203 to drive the first extrusion roller 204 to rotate, causing the driven gear 216 to drive the adjusting gear 211 to rotate simultaneously. This allows the second extrusion roller 210 and the first extrusion roller 204 to rotate inwards while simultaneously performing secondary dewatering of the sludge. During dewatering, the sludge is compressed and shaped, causing it to fall in clumps onto the top of the mud plate 812. At this point, the servo motor 801 can start working, thereby driving the rotating shaft 802 to rotate. The connecting block 804 can be rotated, allowing it to slide on the outer wall of the round rod 805. The right-angle plate 807 drives the push plate 808 to slide on the inner wall of the square groove at the bottom of the mud plate 812. This allows the top of the push plate 808 to automatically unload the mud block formed on the top of the mud plate 812. This allows the sludge to be deeply dewatered, reducing its volume and making it easier to store and transport. It saves costs and space, has high stability and compostability, and effectively reduces environmental pollution.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge dewatering device for a wastewater treatment plant, comprising a main unit base (1), characterized in that: The outer wall of the main base (1) is provided with an extrusion molding component (2), the top of the main base (1) is fixedly equipped with a slant rod (3), the top of the slant rod (3) is fixedly installed with a dewatering tank (4), one end of the outer wall of the dewatering tank (4) is fixedly installed with a support frame (5), and the other end of the outer wall of the dewatering tank (4) is fixedly installed with a water inlet cylinder (12), the outer wall of the support frame (5) is fixedly equipped with a main shaft motor (6), the bottom of the support frame (5) is fixedly equipped with a mud discharge hopper (7), the bottom of the extrusion molding component (2) is provided with an automatic feeding component (8), the power output shaft of the main shaft motor (6) is fixedly equipped with a lead screw (10), the inner wall of the dewatering tank (4) is provided with a stacked screw main body component (11), and the top of the dewatering tank (4) is provided with a flip cover (9). The automatic feeding assembly (8) includes a servo motor (801), the power output shaft of the servo motor (801) is fixedly fitted with a rotating shaft (802), a limit plate (803) is sleeved on the outer wall of the rotating shaft (802), a connecting block (804) is fixedly installed on the outer wall of the rotating shaft (802), a round rod (805) is slidably installed on the inner wall of the connecting block (804), and a tension spring (806) is movably sleeved on the outer wall of the round rod (805). A right-angle plate (807) is fixedly mounted on one end of the spring (806) away from the connecting block (804). A push plate (808) is rotatably connected to the outer wall of the right-angle plate (807). A support rod (809) is slidably connected to the inner wall of the push plate (808). A slide rod (810) is slidably sleeved on the inner wall of the support rod (809). Mounting plates (811) are installed at both ends of the slide rod (810). A mud plate (812) is fixedly mounted on the top of the mounting plate (811). The servo motor (801) is electrically connected to the electrical control cabinet (34). The extrusion molding assembly (2) includes two upright plates (201). The two ends of the mud plate (812) are fixedly installed between the two upright plates (201). The top of the limiting plate (803) is fixedly installed at the bottom of the mud plate (812). The bottom of the mud plate (812) is provided with a rectangular groove, and the width of the rectangular groove is adapted to the top width of the push plate (808).

2. The sludge dewatering device for a wastewater treatment plant according to claim 1, characterized in that: The top of the water inlet cylinder (12) is fixedly fitted with one end of a connecting water pipe (13), and the other end of the connecting water pipe (13) is fitted with a mixing box (14). The top of the mixing box (14) is fixedly fitted with a support plate (15), and the top of the support plate (15) is fixedly fitted with a stirring motor (16). The power output shaft of the stirring motor (16) is fixedly fitted with a stirring shaft (17), and the outer wall of the stirring shaft (17) is fixedly fitted with stirring blades (18). The inner wall of the mixing box (14) is provided with a partition layer (19).

3. The sludge dewatering device for a wastewater treatment plant according to claim 2, characterized in that: The outer wall of the mixing tank (14) is fixedly installed with a flocculation box (20) and a fixture (21). The inner wall of the fixture (21) is clamped with a water inlet pipe (22). The outer wall of the water inlet pipe (22) is fixedly fitted with one end of a connecting water pipe (23). The other end of the connecting water pipe (23) is fixedly fitted with a through pipe (24). The outer wall of the through pipe (24) is fixedly fitted with a flushing pipe (25). The outer wall of the flushing pipe (25) is fixedly fitted with a high-pressure nozzle (26).

4. The sludge dewatering device for a wastewater treatment plant according to claim 3, characterized in that: The bottom of the dehydration tank (4) is equipped with a crossbeam (27), and the bottom of the crossbeam (27) is provided with a water collection tank (28). The bottom of the flocculation tank (20) is respectively fixedly equipped with a sewage overflow port (29) and a sewage inlet (30). The outer wall of the flocculation tank (20) is fixedly equipped with a dosing pipe (31). The bottom of the mixing tank (14) is equipped with a support base (32), and the outer wall of the support base (32) is fixedly equipped with a base plate (33). The top of the base plate (33) is fixedly equipped with an electrical control cabinet (34). The inner wall of the flocculation tank (20) is provided with an overflow pipe (35). The outer wall of the water collection tank (28) near the mixing tank (14) is fixedly equipped with a drain outlet (36).

5. The sludge dewatering device for a wastewater treatment plant according to claim 1, characterized in that: A rotating motor (202) is fixedly installed on the outer wall of the upright plate (201). A rotating rod (203) is fixedly mounted on the power output shaft of the rotating motor (202). An extrusion roller (204) is fixedly sleeved on the outer wall of the rotating rod (203). A sliding groove (205) is opened on the outer wall of the upright plate (201). A slider (206) is slidably connected to the inner wall of the sliding groove (205). A threaded rod (207) is fixedly mounted on the outer wall of the slider (206). A handle (208) is fixedly installed on the outer wall of the threaded rod (207).

6. The sludge dewatering device for a wastewater treatment plant according to claim 5, characterized in that: The inner wall of the slider (206) is rotatably sleeved with a central rod (209), the outer wall of the central rod (209) is sleeved with a second extrusion roller (210), the outer wall of the central rod (209) is fixedly sleeved with an adjusting gear (211), the outer wall of the adjusting gear (211) respectively meshes with a limit gear (212) and a driven gear (216), the outer wall of the driven gear (216) meshes with a rotating gear (215), the outer wall of the adjusting gear (211) is rotatably sleeved with a first connecting handle (213), and the outer wall of the first connecting handle (213) is rotatably connected with a second connecting handle (214).

7. A sludge dewatering device for a wastewater treatment plant according to claim 6, characterized in that: The rotating motor (202) is electrically connected to the electrical control cabinet (34). There are two sliders (206), two threaded rods (207), and two handles (208). The two sliders (206), two threaded rods (207), and two handles (208) are symmetrically distributed at both ends of the extrusion roller (210). The outer wall of the threaded rod (207) is threadedly connected to the inner wall of the vertical plate (201).

8. The sludge dewatering device for a wastewater treatment plant according to claim 1, characterized in that: The stacked screw main body assembly (11) includes a spiral shaft (1101), and spiral blades (1102) are fixedly installed on the outer wall of the spiral shaft (1101). A fixed ring (1103) and a movable ring (1104) are respectively sleeved on the outer wall of the spiral blades (1102). An installation groove (1105) is opened on the outer wall of the fixed ring (1103), and a filter hole (1106) is opened on the outer wall of the movable ring (1104). The pitch of the spiral blade (1102) gradually decreases from one end of the mixing tank (14) to one end of the extrusion molding assembly (2). There are three sets of the stacked spiral main body assembly (11), and the three sets of stacked spiral main body assembly (11) are evenly distributed on the inner wall of the dehydration tank (4). The fixed ring (1103) and the movable ring (1104) are alternately distributed on the outer wall of the spiral blade (1102).

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