Sludge dewatering stacked screw machine

Abstract

The invention belongs to the technical field of stacked screw type sludge dewatering machines, and particularly relates to a sludge dewatering stacked screw machine which comprises a first supporting device and a second supporting device, the first supporting device is placed at the left end of the ground, and the top of the first supporting device is connected with the output end of a flocculation mixing tank of the sludge dewatering stacked screw machine; according to the sludge dewatering device, impurities such as fibers and hair in the sludge can be prevented from winding a stacked screw rod in the sludge dewatering mechanism, and the impurities such as the fibers and the hair in the sludge can smoothly pass through the stacked screw rod; the filter seam is prevented from being blocked by impurities such as fibers and hair, and meanwhile, the effects of being convenient to clean and reducing the cleaning and maintenance cost are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of screw stack type sludge dewatering machines, in particular to a screw stack machine for sludge dewatering. Background Art

[0002] The sludge dewatering screw stacker is mainly used to dehydrate various types of sludge to reduce the moisture content of the sludge, making it easier for subsequent transportation, disposal and other operations.

[0003] If the existing sludge dewatering screw stacking machine does not have adequate sludge pretreatment or contains a large amount of fiber, hair and other impurities, it is easy to cause blockage in the screw shaft, filter seam and other parts of the screw stacking machine. Once blockage occurs, it will not only affect the normal operation of the equipment, but also require a lot of time and effort to clean and repair.

[0004] Therefore, we propose a sludge dewatering screw stacking machine. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A sludge dewatering screw stacking machine, comprising: a first supporting device and a second supporting device;

[0007] The first supporting device is placed on the left end of the ground, and the top of the first supporting device is connected to the output end of the flocculation mixing tank of the sludge dewatering spiral stacking machine. The first supporting device is used to receive and transport the pre-treated sludge inside the flocculation mixing tank. The second supporting device is placed on the right end of the ground, and the second supporting device is used to collect and store the preliminarily dewatered sludge. A water filtering device is installed between the first supporting device and the second supporting device, and the water filtering device is used to collect and discharge the liquid after the sludge is dehydrated. The internal rotation of the water filtering device is connected to the sludge dewatering mechanism, and the left end of the sludge dewatering mechanism is connected to the right end of the first supporting device, and the right end of the sludge dewatering mechanism is in contact with the output end of the second supporting device. The sludge dewatering mechanism is used to dewater the pre-treated sludge.

[0008] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, wherein: the first supporting device comprises: a first supporting assembly;

[0009] The first support assembly is placed on the left end of the ground, the upper inner end of the first support assembly is slidably connected with a sludge input assembly, the right side port of the sludge input assembly is connected with a pushing assembly, and the right end of the pushing assembly is installed inside the sludge dewatering mechanism.

[0010] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, the first support assembly includes: a first support frame;

[0011] The first support frame is placed at the left end of the ground, and a mud discharge cylinder is arranged inside the first support frame, a slide groove is arranged at the upper end of the mud discharge cylinder, and a mud discharge port is arranged at the lower end of the mud discharge cylinder;

[0012] The sludge input assembly comprises: a slider;

[0013] The slider is slidably connected inside the slide, the sludge input pipe is installed at the inner center of the slider, the top of the sludge input pipe is connected to the output end of the flocculation mixing tank of the sludge dewatering screw stacking machine, one end of the hydraulic rod is installed at the top left end of the sludge discharge cylinder, and the other end of the hydraulic rod is installed at the top right end of the slider.

[0014] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, the pushing component includes: a movable ring;

[0015] The movable ring is installed at the right end of the outer wall of the sludge input pipe, and a fixed ring is provided at the right end of the movable ring. The fixed ring is installed at the left end of the inner wall of the sludge dewatering mechanism. A telescopic rod is rotatably connected between the movable ring and the fixed ring, and limiting grooves are provided around the right end of the outer wall of the fixed ring.

[0016] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, the second supporting device includes: a second supporting frame;

[0017] The second support frame is placed on the right end of the ground, and the mixing barrel is arranged inside the second support frame. A driving motor is installed at the center of the outer wall of the mixing barrel, and the output end of the driving motor is connected to a polygonal groove block, which is rotatably connected to the inner center of the mixing barrel. A pressing groove is arranged inside the mixing barrel, and a sealing plate is arranged at the left end of the inner wall of the mixing barrel.

[0018] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, the water filtering device comprises: a water filtering cartridge;

[0019] The water filter cartridge is installed between the first support frame and the second support frame. A drain outlet is provided at the lower end of the outer wall of the water filter cartridge. A collecting cartridge is provided at the inner center of the water filter cartridge. Retaining rings are provided at the left and right ends of the inner wall of the collecting cartridge. A drainage box is installed at the bottom of the collecting cartridge, and the lower end of the outer wall of the drainage box is installed on the inner wall of the drain outlet.

[0020] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, the sludge dewatering mechanism comprises: a first sludge dewatering component;

[0021] The two ends of the outer wall of the first sludge dewatering component are rotatably connected to the inside of the retaining ring, the right end of the first sludge dewatering component is inserted into the inside of the mixing barrel, the interior of the first sludge dewatering component is slidably connected to the limiting component, the interior of the limiting component is slidably connected to the second sludge dewatering component, and the right end of the second sludge dewatering component is connected to the polygonal groove block.

[0022] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, wherein: the first sludge dewatering component comprises: a first rotating drum;

[0023] The two ends of the outer wall of the first rotating drum are rotatably connected to the inside of the retaining ring, a fixing ring is installed at the left end of the inner wall of the first rotating drum, a first filter is arranged around the outer wall of the first rotating drum, a capstan is installed at the right end of the outer wall of the first rotating drum, the capstan is arranged inside the mixing drum, and a stacked spiral sheet is arranged on the inner wall of the first rotating drum.

[0024] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, the limiting component includes: a second rotating drum;

[0025] The second rotating drum is slidably connected to the inside of the first rotating drum, a second filter is arranged around the outer wall of the second rotating drum, a movable groove is arranged at the inner left end of the second rotating drum, a first limiting ring is arranged at the outer wall left end of the second rotating drum, the first limiting ring is slidably connected to the inner left end of the first rotating drum, and the protrusion at the left end of the outer wall of the first limiting ring is in contact with the limiting groove.

[0026] As a preferred solution of the sludge dewatering screw stacking machine described in the present invention, the second sludge dewatering component includes: a stacking screw;

[0027] The stacking screw is slidably connected to the inside of the second rotating cylinder, and a second limiting ring is provided at the left end of the outer wall of the stacking screw. The second limiting ring is slidably connected to the inside of the movable groove. The protrusion at the left end of the outer wall of the second limiting ring contacts the inner wall of the movable groove. A polygonal block is provided at the right side port of the stacking screw, and the polygonal block is connected to the polygonal groove block inside the polygonal groove block.

[0028] Compared with existing technologies:

[0029] By driving the first supporting device, the sludge dewatering mechanism can be rotated as a whole or the internal components can be rotated separately, thereby achieving the effect of multiple spiral transportation of the sludge;

[0030] Through the cooperation between the first supporting device, the second supporting device and the sludge dewatering mechanism, the sludge can first be squeezed and dehydrated by the large stacking screw sheets, and then the sludge collected by the second supporting device is minced by the sludge dewatering mechanism to break the impurities such as fibers and hair inside the sludge and fully mix with the sludge, so as to prevent the impurities such as fibers and hair inside the sludge from winding around the stacking screw inside the sludge dewatering mechanism, and to make the sludge wrap around the impurities such as fibers and hair, so as to pass through the stacking screw smoothly, thereby preventing the impurities such as fibers and hair from clogging the filter seam;

[0031] During maintenance and cleaning, it is only necessary to pour clean water into the interior of the sludge dewatering mechanism and close the drain valve of the water filter device. Thus, with the cooperation of the first supporting device, the second supporting device and the sludge dewatering mechanism, the internal structure can be easily cleaned, thereby reducing the cost of cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the overall main structure provided by the present invention;

[0033] Figure 2 A schematic diagram of the overall split structure provided by the present invention;

[0034] Figure 3 A schematic diagram of the disassembled structure of the first supporting device provided by the present invention;

[0035] Figure 4 A schematic diagram of the structure of the sludge input assembly provided by the present invention;

[0036] Figure 5 A schematic diagram of the structure of the push assembly provided by the present invention;

[0037] Figure 6 A right side structural schematic diagram of a second supporting device provided by the present invention;

[0038] Figure 7 A schematic diagram of the split structure of the second supporting device provided by the present invention from the left side;

[0039] Figure 8 A schematic diagram of the split structure of the water filtration device and the sludge dewatering mechanism provided by the present invention;

[0040] Fig. 9 A schematic diagram of the structure of the water filter device provided by the present invention;

[0041] Fig.10 A schematic diagram of the disassembled structure of the sludge dewatering mechanism provided by the present invention;

[0042] Fig.11 A schematic diagram of the structure of the first sludge dewatering component provided by the present invention;

[0043] Fig.12 A schematic diagram of the separation structure of the limiting component and the second sludge dewatering component provided by the present invention;

[0044] Fig.13 A schematic diagram of the structure of the limit assembly provided by the present invention;

[0045] Fig.14 A schematic diagram of the main structure of the limit assembly provided by the present invention;

[0046] Fig.15A left-side structural schematic diagram of a second sludge dewatering assembly provided by the present invention;

[0047] Fig.16 This is a right view structural schematic diagram of the second sludge dewatering component provided by the present invention.

[0048] In the figure:

[0049] First support device 1, first support assembly 11, first support frame 111, mud discharge barrel 112, slide 113, mud discharge port 114, sludge input assembly 12, slider 121, sludge input pipe 122, hydraulic rod 123, push assembly 13, movable ring 131, fixed ring 132, limit groove 133, telescopic rod 134, second support device 2, second support frame 21, mixing barrel 22, drive motor 23, polygonal slot block 24, pressing slot 25, sealing plate 2 6. Water filtering device 3, water filtering cylinder 31, drain outlet 32, collecting cylinder 33, retaining ring 34, drainage box 35, sludge dewatering mechanism 4, first sludge dewatering assembly 41, first rotating drum 411, first filter screen 412, capstan 413, stacked screw sheets 414, limiting assembly 42, second rotating drum 421, second filter screen 422, movable groove 423, first limiting ring 424, second sludge dewatering assembly 43, stacked screw 431, second limiting ring 432, polygonal block 433. DETAILED DESCRIPTION

[0050] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] The present invention provides a sludge dewatering screw stacking machine, please refer to Figure 1-Figure 16 , comprising a first supporting device 1, a second supporting device 2, a water filtering device 3 and a sludge dewatering mechanism 4;

[0052] The first support device 1 is placed on the left end of the ground, and the top of the first support device 1 is connected to the output end of the flocculation mixing tank of the sludge dewatering screw stacking machine. The first support device 1 is used to receive and transport the pretreated sludge inside the flocculation mixing tank. The first support device 1 includes: a first support assembly 11, a first support frame 111, a mud discharge barrel 112, a chute 113, a mud discharge port 114, a sludge input assembly 12, a slider 121, a sludge input pipe 122, a hydraulic rod 123, a pushing assembly 13, a movable ring 131, a fixed ring 132, a limit groove 133 and a telescopic Rod 134, the first support assembly 11 is placed on the left end of the ground, the first support frame 111 is placed on the left end of the ground, a mud discharge barrel 112 is provided inside the first support frame 111, a chute 113 is provided at the upper end of the mud discharge barrel 112, a mud discharge port 114 is provided at the lower end of the mud discharge barrel 112, and the mud discharge port 114 can discharge the mud discharged by the sludge dewatering mechanism 4 to the ground, the upper end of the first support assembly 11 is slidably connected with the mud input assembly 12, the slider 121 is slidably connected to the inside of the chute 113, and the mud input pipe 122 is installed in the inside of the slider 121 The top of the sludge input pipe 122 is connected to the output end of the flocculation mixing tank of the sludge dewatering spiral stacking machine. The sludge pretreated in the flocculation mixing tank can be received and transported through the sludge input pipe 122. One end of the hydraulic rod 123 is installed at the top left end of the sludge discharge cylinder 112, and the other end of the hydraulic rod 123 is installed at the top right end of the slider 121. The slider 121 can be pushed by the hydraulic rod 123 to move. The right side port of the sludge input component 12 is connected to the pushing component 13. The right end of the pushing component 13 is installed inside the sludge dewatering mechanism 4. 131 is installed on the right end of the outer wall of the sludge input pipe 122, and a fixed ring 132 is provided at the right end of the movable ring 131. The fixed ring 132 is installed at the left end of the inner wall of the sludge dewatering mechanism 4. A telescopic rod 134 is rotatably connected between the movable ring 131 and the fixed ring 132. The telescopic rod 134 can limit and guide the stretching of the movable ring 131 and the fixed ring 132. After the movable ring 131 and the fixed ring 132 are contracted, the outer wall of the movable ring 131 can contact the inner wall of the fixed ring 132. A limiting groove 133 is provided around the right end of the outer wall of the fixed ring 132.

[0053] The second supporting device 2 is placed at the right end of the ground. The second supporting device 2 is used to collect and store the preliminarily dehydrated sludge. The second supporting device 2 includes: a second supporting frame 21, a mixing barrel 22, a driving motor 23, a polygonal slot block 24, a pressing slot 25 and a sealing plate 26. The second supporting frame 21 is placed at the right end of the ground. Through the cooperation of the first supporting frame 111 and the second supporting frame 21, the water filtering device 3 can be supported and placed. The mixing barrel 22 is arranged inside the second supporting frame 21. The driving motor 23 is installed at the center of the outer wall of the mixing barrel 22. The output end of the driving motor 23 is connected to the polygonal slot block 24. The polygonal slot block 24 is rotatably connected to the inner center of the mixing barrel 22. A pressing slot 25 is provided inside the mixing barrel 22, and a sealing plate 26 is provided at the left end of the inner wall of the mixing barrel 22.

[0054] The water filtering device 3 is installed between the first supporting device 1 and the second supporting device 2. The water filtering device 3 is used to collect and discharge the liquid after the sludge is dehydrated. The water filtering device 3 includes: a water filtering cylinder 31, a drain port 32, a collecting cylinder 33, a retaining ring 34 and a drainage box 35. The water filtering cylinder 31 is installed between the first supporting frame 111 and the second supporting frame 21. The lower end of the outer wall of the water filtering cylinder 31 is provided with a drain port 32, and the inner center of the water filtering cylinder 31 is provided with a collecting cylinder 33. The left end and the right end of the inner wall of the collecting cylinder 33 are both provided with retaining rings 34. A drainage box 35 is installed at the bottom of the collecting cylinder 33. The lower end of the outer wall of the drainage box 35 is installed on the inner wall of the drain port 32. The liquid dehydrated by the sludge dehydration mechanism 4 can be collected through the collecting cylinder 33 and drained and discharged through the drainage box 35.

[0055] The sludge dewatering mechanism 4 is rotatably connected to the inside of the water filtering device 3, the left end of the sludge dewatering mechanism 4 is connected to the right end of the first supporting device 1, and the right end of the sludge dewatering mechanism 4 is in contact with the output end of the second supporting device 2. The sludge dewatering mechanism 4 is used to dewater the pretreated sludge. The sludge dewatering mechanism 4 includes: a first sludge dewatering component 41, a first rotating drum 411, a first filter screen 412, a capstan 413, a stacked screw sheet 414, a limiting component 42, a second rotating drum 421, a second filter screen 422, a movable groove 423, a first limiting ring 424, a second sludge dewatering component 43, a stacked screw 431, a second limiting ring 432 and a polygonal block 433. The two ends of the outer wall of the first sludge dewatering component 41 are rotatably connected to the inside of the retaining ring 34. The first sludge dewatering component 41 is rotatably connected to the inside of the retaining ring 34. The right end of the dewatering component 41 is inserted into the interior of the mixing barrel 22. Through the cooperation of the first sludge dewatering component 41 and the mixing barrel 22, the sludge after preliminary treatment can be crushed. The two ends of the outer wall of the first rotating drum 411 are rotatably connected to the interior of the retaining ring 34. A fixing ring 132 is installed at the left end of the inner wall of the first rotating drum 411. Through the movement of the fixing ring 132, the first rotating drum 411 can be driven to perform telescopic movement. A first filter screen 412 is arranged around the outer wall of the first rotating drum 411. The first filter screen 412 can filter out the liquid inside the sludge. A capstan 413 is installed at the right end of the outer wall of the first rotating drum 411. The capstan 413 is arranged inside the mixing barrel 22. Through the cooperation of the mixing barrel 22 and the capstan 413, the collected and gathered sludge can be crushed. The first rotating drum 411 is provided with a spiral sheet 414 on its inner wall, and the pre-treated sludge is first discharged into the first rotating drum 411 through the sludge input pipe 122, and then the second sludge dewatering assembly 43 drives the limiting assembly 42 and the first rotating drum 411 to rotate, so that the spiral sheet 414 squeezes and dehydrates the pre-treated sludge, and the dehydrated liquid is filtered out to the inside of the collecting drum 33 through the first filter screen 412. The first sludge dewatering assembly 41 is internally slidably connected to the limiting assembly 42, and the sludge can be dehydrated once through the cooperation of the first sludge dewatering assembly 41 and the limiting assembly 42. The second rotating drum 421 is slidably connected to the inside of the first rotating drum 411, and the outer wall of the second rotating drum 421 is provided with a second The filter screen 422 and the second rotating drum 421 are provided with a movable groove 423 at the inner left end, and the outer wall left end of the second rotating drum 421 is provided with a first limiting ring 424, which is slidably connected to the inner left end of the first rotating drum 411. The convex block at the left end of the outer wall of the first limiting ring 424 contacts the limiting groove 133. The convex block at the left end of the outer wall of the first limiting ring 424 is inserted into the limiting groove 133 through the push of the hydraulic rod 123, so that the second rotating drum 421 can drive the first rotating drum 411 to rotate. The inner part of the limiting assembly 42 is slidably connected with the second sludge dewatering assembly 43, and the right end of the second sludge dewatering assembly 43 is connected to the polygonal groove block 24. The second sludge dewatering assembly 43 can be driven by the drive motor 23 to perform secondary dehydration operation.The stacking screw 431 is slidably connected to the inside of the second rotating drum 421. The left end of the outer wall of the stacking screw 431 is provided with a second limiting ring 432. The second limiting ring 432 is slidably connected to the inside of the movable groove 423. The protrusion at the left end of the outer wall of the second limiting ring 432 contacts the inner wall of the movable groove 423. The rotation of the stacking screw 431 can drive the second rotating drum 421 to rotate. The right side port of the stacking screw 431 is provided with a polygonal block 433. The polygonal block 433 is connected to the polygonal groove block 24 inside the polygonal groove block 24. The drive of the driving motor 23 can drive the stacking screw 431 to rotate inside the second rotating drum 421, so that the stacking screw 431 performs secondary extrusion and dehydration on the sludge.

[0056] During specific use, a person skilled in the art will start the driving motor 23, so that the driving motor 23 drives the stacking screw 431 to rotate. After the sludge passes through the metering tank and the flocculation mixing tank for pretreatment, the output end of the flocculation mixing tank transfers the sludge to the inside of the sludge input pipe 122, and then the sludge is transported to between the first rotating drum 411 and the second rotating drum 421 by the sludge input pipe 122. At this time, the hydraulic rod 123 is started to drive the sludge input pipe 122 to move to the right end until the sludge input pipe 122 is inserted into the inside of the second rotating drum 421, thereby smoothly rotating the sludge. The first limiting ring 424 is inserted into the limiting groove 133 at the right end of the fixed ring 132, and the second limiting ring 432 is inserted into the left end of the inner wall of the movable groove 423. The stacking screw 431 and the second rotating drum 421 move to the left end. At this time, the stacking screw 431 can drive the second rotating drum 421 and the first rotating drum 411 to rotate, so that the sludge falling between the first rotating drum 411 and the second rotating drum 421 is squeezed by the sludge input pipe 122 and enters the interior of the stacking screw sheet 414 for spiral extrusion and transportation. Through the reciprocating above activities, the measured sludge passes through the stacking screw sheet 414. The sludge in the mixing barrel 22 is continuously minced by the capstan 413 at the right end of the first rotating drum 411, so that the impurities such as fibers and hair in the sludge are broken and fully mixed with the sludge. When the sludge is to be discharged, the hydraulic rod 123 is started again to move the sludge input pipe 122 to the left, driving the first rotating drum 411 to move the sludge input pipe 122 to the left. The first rotating drum 411 and the second rotating drum 421 return to their initial positions, at which time the right end of the stacking screw 431 contacts the sludge inside the mixing drum 22, and the stacking screw 431 continuously rotates to continuously spirally transport and squeeze the sludge from right to left, and the squeezed liquid passes through the second filter screen 422 and the first filter screen 412 and falls into the interior of the collecting drum 33 for discharge, while the sludge is transported to the left by the stacking screw 431 to the gap between the movable ring 131 and the fixed ring 132, and then discharged to the ground through the mud discharge port 114 at the lower end of the mud discharge drum 112, thereby completing the secondary dehydration operation.

[0057] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sludge dewatering screw stacking machine, comprising: The first supporting device (1) and the second supporting device (2) are characterized in that: The first support device (1) is placed at the left end of the ground, the top of the first support device (1) is connected to the output end of the flocculation mixing tank of the sludge dewatering spiral stacking machine, the first support device (1) is used to receive and transport the pre-treated sludge inside the flocculation mixing tank, the second support device (2) is placed at the right end of the ground, the second support device (2) is used to collect and store the preliminarily dewatered sludge, a water filter device (3) is installed between the first support device (1) and the second support device (2), the water filter device (3) is used to collect and discharge the liquid after the sludge is dewatered, the inside of the water filter device (3) is rotatably connected to the sludge dewatering mechanism (4), the left end of the sludge dewatering mechanism (4) is connected to the right end of the first support device (1), the right end of the sludge dewatering mechanism (4) is in contact with the output end of the second support device (2), and the sludge dewatering mechanism (4) is used to dewater the pre-treated sludge.

2. A sludge dewatering screw stacking machine according to claim 1, characterized in that: The first supporting device (1) comprises: a first supporting assembly (11); The first support assembly (11) is placed at the left end of the ground, the upper end of the interior of the first support assembly (11) is slidably connected to a sludge input assembly (12), the right side port of the sludge input assembly (12) is connected to a pushing assembly (13), and the right end of the pushing assembly (13) is installed inside the sludge dewatering mechanism (4).

3. A sludge dewatering screw stacking machine according to claim 2, characterized in that: The first support assembly (11) comprises: a first support frame (111); The first support frame (111) is placed at the left end of the ground, a mud discharge barrel (112) is provided inside the first support frame (111), a slide groove (113) is provided at the upper end of the mud discharge barrel (112), and a mud discharge port (114) is provided at the lower end of the mud discharge barrel (112); The sludge input component (12) comprises: a slider (121); The slider (121) is slidably connected inside the slide groove (113), the sludge input pipe (122) is installed at the inner center of the slider (121), the top of the sludge input pipe (122) is connected to the output end of the flocculation mixing tank of the sludge dewatering screw stacking machine, one end of the hydraulic rod (123) is installed at the top left end of the sludge discharge cylinder (112), and the other end of the hydraulic rod (123) is installed at the top right end of the slider (121).

4. A sludge dewatering screw stacking machine according to claim 3, characterized in that: The pushing assembly (13) comprises: a movable ring (131); A movable ring (131) is mounted on the right end of the outer wall of the sludge input pipe (122); a fixed ring (132) is provided at the right end of the movable ring (131); the fixed ring (132) is mounted on the left end of the inner wall of the sludge dewatering mechanism (4); a telescopic rod (134) is rotatably connected between the movable ring (131) and the fixed ring (132); and limiting grooves (133) are provided around the right end of the outer wall of the fixed ring (132).

5. The sludge dewatering screw stacking machine according to claim 4, characterized in that: The second supporting device (2) comprises: a second supporting frame (21); The second support frame (21) is placed on the right end of the ground, and the mixing barrel (22) is arranged inside the second support frame (21). A driving motor (23) is installed at the center of the outer wall of the mixing barrel (22). The output end of the driving motor (23) is connected to a polygonal groove block (24), and the polygonal groove block (24) is rotatably connected to the inner center of the mixing barrel (22). A pressing groove (25) is arranged inside the mixing barrel (22), and a sealing plate (26) is arranged at the left end of the inner wall of the mixing barrel (22).

6. The sludge dewatering screw stacking machine according to claim 5, characterized in that: The water filtering device (3) comprises: a water filtering cartridge (31); The water filter cartridge (31) is installed between the first support frame (111) and the second support frame (21); a water outlet (32) is provided at the lower end of the outer wall of the water filter cartridge (31); a collecting cartridge (33) is provided at the inner center of the water filter cartridge (31); retaining rings (34) are provided at the left end and the right end of the inner wall of the collecting cartridge (33); a drainage box (35) is installed at the bottom of the collecting cartridge (33); and the lower end of the outer wall of the drainage box (35) is installed on the inner wall of the water outlet (32).

7. The sludge dewatering screw stacking machine according to claim 6, characterized in that: The sludge dewatering mechanism (4) comprises: a first sludge dewatering component (41); The two ends of the outer wall of the first sludge dewatering component (41) are rotatably connected to the inside of the retaining ring (34), the right end of the first sludge dewatering component (41) is inserted into the inside of the mixing barrel (22), the inside of the first sludge dewatering component (41) is slidably connected to the limiting component (42), the inside of the limiting component (42) is slidably connected to the second sludge dewatering component (43), and the right end of the second sludge dewatering component (43) is connected to the polygonal groove block (24).

8. The sludge dewatering screw stacking machine according to claim 7, characterized in that: The first sludge dewatering component (41) comprises: a first rotating drum (411); The two ends of the outer wall of the first rotating drum (411) are rotatably connected to the inside of the retaining ring (34); a fixing ring (132) is installed at the left end of the inner wall of the first rotating drum (411); a first filter screen (412) is arranged around the outer wall of the first rotating drum (411); a capstan (413) is installed at the right end of the outer wall of the first rotating drum (411); the capstan (413) is arranged inside the mixing drum (22); and a stacked spiral sheet (414) is provided on the inner wall of the first rotating drum (411).

9. The sludge dewatering screw stacking machine according to claim 8, characterized in that: The limiting assembly (42) comprises: a second rotating drum (421); The second rotating drum (421) is slidably connected to the inside of the first rotating drum (411), a second filter screen (422) is arranged around the outer wall of the second rotating drum (421), a movable groove (423) is arranged at the left end of the inside of the second rotating drum (421), a first limiting ring (424) is arranged at the left end of the outer wall of the second rotating drum (421), the first limiting ring (424) is slidably connected to the left end of the inside of the first rotating drum (411), and a protrusion at the left end of the outer wall of the first limiting ring (424) contacts the limiting groove (133).

10. The sludge dewatering screw stacking machine according to claim 9, characterized in that: The second sludge dewatering component (43) comprises: a stacked screw (431); The stacking screw (431) is slidably connected to the inside of the second rotating cylinder (421); a second limiting ring (432) is provided at the left end of the outer wall of the stacking screw (431); the second limiting ring (432) is slidably connected to the inside of the movable groove (423); a protrusion at the left end of the outer wall of the second limiting ring (432) contacts the inner wall of the movable groove (423); a polygonal block (433) is provided at the right end of the stacking screw (431); the polygonal block (433) is connected to the polygonal groove block (24) inside the polygonal groove block (24).

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