Water conservancy construction sludge treatment equipment

Abstract

This application, in the field of sludge treatment technology, specifically discloses a sludge treatment device for water conservancy construction. The device includes a filter cylinder, rotatably mounted via a first drive unit; first auger blades, rotatably mounted inside the filter cylinder via an auger shaft; and an auger shaft, rotatably mounted via a second drive unit. One end of the filter cylinder has a feed inlet, and the other end has a discharge outlet for discharging sludge after water compression. Compared to the prior art's simple conveying method using a feeding auger without compression, this structure generates compression through the relative movement of the filter cylinder and the first auger blades, significantly increasing the water separation amount and improving the initial dewatering effect. Furthermore, the filter cylinder forms a vortex, generating centrifugal force, further enhancing water filtration and ensuring the sludge dewatering effect.

Description

Technical Field

[0001] This application relates to the field of sludge treatment technology, and in particular to a sludge treatment device for water conservancy construction. Background Technology

[0002] Sludge is a byproduct of wastewater treatment, an extremely complex heterogeneous substance composed of organic debris, bacterial cells, inorganic particles, colloids, and other components. The main characteristic of sludge is its high water content, which can reach over 99%. It is a viscous substance between liquid and solid, and can be transported by pumps. However, it is difficult to separate into solid and liquid phases through sedimentation, and is usually separated using dewatering devices for recycling.

[0003] Patent document CN117401885A discloses an environmentally friendly sludge dewatering device. In this device, sludge falls into a feeding cylinder through a feed cylinder and is pushed by a feeding auger, allowing the sludge to pass through filter holes for wastewater filtration. The filtered sludge is then pushed between a heating plate and baffles for compression and flattening, thus achieving sludge dewatering. This method has certain positive significance. However, it also has some shortcomings. For example, when the sludge is conveyed by the feeding auger in the feeding cylinder, neither the sludge nor the water within it can be squeezed out. Relatively little water flows through the filter holes, and the final sludge is only squeezed by the heating plate and baffles. At this point, the sludge is mostly fluid with a high water content. This non-closed compression method cannot completely remove the water from the sludge, resulting in incomplete dewatering and affecting the quality of sludge treatment. Utility Model Content

[0004] The purpose of this application is to provide a sludge treatment device for water conservancy construction in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of this application is as follows:

[0006] A sludge treatment device for water conservancy construction, comprising:

[0007] A filter cartridge, which is rotatably configured via a first drive unit;

[0008] The first auger blade is rotatably disposed inside the filter cylinder via an auger shaft; the auger shaft is rotatably disposed via a second drive unit.

[0009] The filter cylinder has a feed inlet at one end and a discharge outlet at the other end for discharging sludge after squeezing out water.

[0010] Preferably, the end of the first auger blade away from the feed inlet is connected to the outer wall of the auger shaft, and an annular gap is provided between the first auger blade and the outer wall of the auger shaft, and a second auger blade is rotatably disposed in the annular gap; the second auger blade is driven by a third drive unit.

[0011] Preferably, it also includes a housing, the filter cylinder is rotatably disposed inside the housing, the housing has a feed end baffle and a discharge end baffle at both ends, the feed inlet is disposed through the feed end baffle, and the discharge outlet is disposed on the discharge end baffle.

[0012] Preferably, the feed end baffle is provided with a first mounting hole, the filter cylinder is rotatably disposed in the first mounting hole, the outer peripheral wall of the end of the filter cylinder located outside the outer shell is provided with a first belt groove, the first drive unit is a first motor, and the transmission end of the first motor is connected to the first belt groove through a first belt.

[0013] Preferably, the feed end of the filter cylinder is provided with a circular baffle, the outer edge of the circular baffle is concentrically rotatably connected to the inner wall of the filter cylinder, the circular baffle is provided with a second mounting hole, a rotating sleeve is rotatably provided inside the second mounting hole, one end of the second auger blade facing the feed end is connected to the rotating sleeve, a second belt groove is provided on the outer peripheral wall of the rotating sleeve located outside the outer shell, the third drive unit is a third motor, the third motor is disposed on the outer shell, and the third motor is connected to the second belt groove through a second belt drive.

[0014] Preferably, the auger shaft passes through the interior of the rotating sleeve and is concentrically connected to the rotating sleeve; the second drive unit is a second motor, the transmission end of the second motor is connected to the auger shaft, and the second motor is mounted on the frame on which the housing is mounted.

[0015] Preferably, the feed inlet is disposed on the circular baffle, the feed inlet is provided with a feed pipe, the end of the feed pipe away from the feed inlet is provided with a feed hopper, and the feed pipe is disposed on the outer shell.

[0016] Preferably, the auger shaft is hollow, and a heating component is provided inside the auger shaft, which is connected to the frame.

[0017] Preferably, the inner wall of the housing is provided with a baffle plate, the baffle plate is provided with a clearance hole for the auger shaft, the end of the baffle plate facing the discharge port is provided with a blocking cone, and the inner wall of the housing is provided with a telescopic rod, the telescopic end of the telescopic rod is connected to the baffle plate to adjust the axial distance between the blocking cone and the discharge port;

[0018] The baffle plate is provided with a clearance groove, and the discharge end baffle plate is provided with a dividing plate corresponding to the clearance groove.

[0019] Preferably, the diameter of the filter cylinder gradually decreases along the direction from the feed inlet to the discharge outlet.

[0020] The sludge treatment equipment for water conservancy construction disclosed in this application, compared with the prior art which simply conveys the material through a feeding auger and cannot compress it, generates compression through the relative movement of the filter cylinder and the first auger blades, which significantly increases the amount of water separated and improves the initial dewatering effect; moreover, the filter cylinder forms a vortex, generating centrifugal force, which further improves the filtration of water, thereby ensuring the dewatering effect of the sludge. Attached Figure Description

[0021] Figure 1 This is a three-dimensional view of the overall structure of this application;

[0022] Figure 2 This is another perspective view of the overall structure of this application;

[0023] Figure 3 This is another perspective view of the overall structure of this application;

[0024] Figure 4 This is another perspective view of the overall structure of this application;

[0025] Figure 5 This is a front view of the overall structure of this application;

[0026] Figure 6 for Figure 5 Sectional view of section AA;

[0027] Figure 7 for Figure 6 Enlarged view of a portion of point A in the middle;

[0028] Figure 8 This is a bottom view of the overall structure of this application;

[0029] Figure 9 for Figure 8 Sectional view of section BB;

[0030] Figure 10 for Figure 9 Enlarged view of a portion of point B in the middle;

[0031] Figure 11 This is a top view of the overall structure of this application;

[0032] Figure 12 for Figure 11 Sectional view of the C-section;

[0033] Figure 13 for Figure 12 Enlarged view of a portion of point C in the middle;

[0034] Figure 14 for Figure 12 A magnified view of a portion of point D in the middle.

[0035] In the picture:

[0036] 1. Frame; 10. Outer shell; 11. First motor; 110. First belt; 12. Feed pipe; 120. Feed hopper; 1200. Feed inlet; 13. Second motor; 14. Third motor; 140. Second belt; 15. Collection box; 150. Drain outlet; 16. Feed end baffle; 2. Filter cylinder; 20. First auger blade; 21. Annular gap; 22. Second auger blade; 23. Auger shaft; 24. Heating assembly; 25. Telescopic rod; 26. Baffle plate; 27. Blocking cone; 28. Circular baffle; 29. ​​Rotating sleeve; 30. Dividing plate; 31. Clearance groove; 4. Discharge port. Detailed Implementation

[0037] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0038] like Figure 1-14 As shown, a sludge treatment device for water conservancy construction includes:

[0039] Filter cartridge 2 is rotated by the first drive unit;

[0040] The first auger blade 20 is rotatably disposed inside the filter cylinder 2 via the auger shaft 23; the auger shaft 23 is rotatably disposed via the second drive unit.

[0041] The filter cylinder 2 has a feed inlet 1200 at one end and a discharge outlet 4 at the other end for discharging sludge after squeezing out water.

[0042] The filter cylinder 2 is a circular cylinder with several filter holes evenly distributed on its wall. The diameter of the filter holes can be set according to the size of the particles in the sludge, usually 0.1 to 2 mm, so as to allow water to pass through while trapping sludge particles.

[0043] The filter cartridge 2 rotates via the first drive unit. Specifically, bearings are installed at both ends of the filter cartridge 2 to connect it to certain external frames or shells to ensure its rotational stability.

[0044] The first auger blade 20 is fixed in a spiral shape on the outer wall of the auger shaft 23. The two ends of the auger shaft 23 are supported on the external structure by bearings. The length of the auger shaft 23 is adapted to the length of the filter cartridge 2, or it can be longer to meet the transmission requirements.

[0045] The second drive unit is used to drive the auger shaft 23 to rotate, and its rotation direction can be the same as that of the filter cylinder 2.

[0046] The filter cylinder 2 has an inlet 1200 at one end, which can be circular with a diameter determined according to the processing capacity; the outlet 4 at the other end is used to discharge the sludge after it has been squeezed and dewatered.

[0047] When the equipment is working, sludge enters the filter cylinder 2 through the feed inlet 1200. The first drive unit drives the filter cylinder 2 to rotate, and the second drive unit drives the auger shaft 23 to drive the first auger blade 20 to rotate. Under the pushing action of the first auger blade 20, the sludge moves axially towards the discharge port 4 along the filter cylinder 2. At the same time, the rotating filter cylinder 2 and the first auger blade 20 cooperate to form a squeezing effect on the sludge. The water in the sludge is discharged through the filter holes of the filter cylinder 2 under the squeezing, achieving preliminary dewatering. Furthermore, the drive units of the filter cylinder 2 and the auger shaft 23 are set separately. In actual operation, the rotation of the filter cylinder 2 drives the sludge inside the filter cylinder 2 to spiral, thereby generating centrifugal force, making it easier for the water in the sludge to be discharged from the filter holes in the filter cylinder 2, thereby improving the separation effect.

[0048] It should be noted that since the first auger blade 20 is mainly used to transport and compress the dewatered sludge, its rotation speed is relatively slow and it cannot form a vortex. Therefore, the filter cylinder 2 set in this embodiment can rotate relatively quickly to form a vortex and provide a certain centrifugal force.

[0049] Moreover, the discharge port 4 is not always open. During the squeezing process, the discharge port 4 can be closed briefly, so that the sludge inside the filter cylinder 2 is gradually transported by the first auger blade 20 to the end of the filter cylinder 2 near the discharge port 4. As the first auger blade 20 continuously squeezes, the dewatered sludge is gradually squeezed to the end near the discharge port 4, thereby achieving full dewatering.

[0050] Compared to the prior art, which simply conveys material through a feeding auger and cannot compress it, this structure generates compression through the relative movement of the filter cylinder 2 and the first auger blade 20, which significantly increases the amount of water separated and improves the initial dewatering effect. Moreover, the filter cylinder 2 forms a vortex, generating centrifugal force, which further improves the filtration of water, thereby ensuring the dewatering effect of the sludge.

[0051] In some further embodiments, the end of the first auger blade 20 away from the feed inlet 1200 is connected to the outer wall of the auger shaft 23, and an annular gap 21 is provided between the first auger blade 20 and the outer wall of the auger shaft 23. A second auger blade 22 is rotatably disposed in the annular gap 21. The second auger blade 22 is driven by a third drive unit.

[0052] The end of the first auger blade 20 away from the feed inlet 1200 is fixedly connected to the outer wall of the auger shaft 23, and the width of the annular gap 21 formed between the two can be set according to the sludge treatment requirements.

[0053] The second auger blade 22 is also spiral-shaped and is disposed in the annular gap 21. The outer edge of the second auger blade 22 is adapted to the inner edge of the first auger blade 20 but does not interfere with each other. The inner edge is adapted to the outer wall of the auger shaft 23, forming a nested structure.

[0054] The third drive unit drives the second auger blade 22 to rotate, and its rotation speed may differ from that of the first auger blade 20. When the equipment is running, the first auger blade 20 and the second auger blade 22 form a dual pushing and squeezing structure. Due to potential differences in rotational speed or direction of rotation, the sludge undergoes more complex shearing and squeezing actions within the annular gap 21, further promoting the separation of water from the sludge. The effect of this structure is that, through the cooperation of the dual auger blades, the number and intensity of squeezing during the sludge transport process are increased, solving the problem of insufficient squeezing by a single auger blade, allowing more water to be discharged from the filter cartridge 2, and improving dewatering efficiency.

[0055] In some further embodiments, the housing 10 is also included, the filter cylinder 2 is rotatably disposed inside the housing 10, and the two ends of the housing 10 are provided with a feed end baffle 16 and a discharge end baffle. The feed inlet 1200 is disposed through the feed end baffle 16, and the discharge outlet 4 is disposed on the discharge end baffle.

[0056] The outer casing 10 is a sealed box structure with a larger internal size than the filter cartridge 2 to accommodate the filter cartridge 2 and provide space for water collection.

[0057] The outer casing 10 is provided with a feed end baffle 16 and a discharge end baffle at its two ends, respectively. The baffles can be made of wear-resistant and corrosion-resistant materials, such as stainless steel.

[0058] The feed end baffle 16 has a through hole for the filter cylinder 2 to pass through. The filter cylinder 2 is connected to the through hole by a sealed bearing, which ensures that the filter cylinder 2 can rotate freely and prevents water from leaking out of the gap.

[0059] The feed inlet 1200 passes through the feed end baffle 16 and communicates with the inside of the filter cylinder 2, while the discharge outlet 4 is opened on the discharge end baffle, corresponding to the discharge end of the filter cylinder 2.

[0060] A drain outlet 150 may be provided at the bottom of the housing 10 for discharging the collected sewage.

[0061] Specifically, a collection box 15 can be installed at the bottom of the outer casing 10 corresponding to the drain outlet 150 to temporarily store the collected sewage.

[0062] The function of the outer shell 10 is to enclose the filter cartridge 2 inside, so that the water discharged from the filter cartridge 2 is collected by the outer shell 10, preventing sewage from flowing out and polluting the environment. At the same time, it also protects the filter cartridge 2 and internal components, reducing the impact of the external environment on the operation of the equipment.

[0063] In some further embodiments, the feed end baffle 16 is provided with a first mounting hole, the filter cylinder 2 is rotatably disposed in the first mounting hole, the outer peripheral wall of the end of the filter cylinder 2 located outside the outer shell 10 is provided with a first belt 110 groove, the first drive unit is a first motor 11, and the transmission end of the first motor 11 is connected to the first belt 110 groove through the first belt 110.

[0064] The first mounting hole is the aforementioned through hole.

[0065] A rolling bearing is installed in the first mounting hole of the feed end baffle 16. One end of the filter cylinder 2 passes through the rolling bearing and extends to the outside of the outer shell 10. The inner ring of the bearing is fixedly connected to the outer wall of the filter cylinder 2, and the outer ring is fixedly connected to the hole wall of the first mounting hole to ensure smooth rotation of the filter cylinder 2.

[0066] A first belt 110 groove is machined on the outer peripheral wall of one end of the filter cartridge 2 located outside the outer casing 10. The first belt 110 groove is an annular groove that fits the first belt 110. The first drive unit adopts a first motor 11, which is fixedly mounted on the outer casing 10. A pulley is mounted on its output shaft, and the first belt 110 is sleeved between the pulley and the first belt 110 groove to form a transmission connection.

[0067] When the first motor 11 starts, it drives the filter cylinder 2 to rotate through the first belt 110. The belt drive has the characteristics of simple structure, smooth transmission and convenient maintenance. It is also easy to adjust the speed of the filter cylinder 2 by changing the pulleys of different diameters to adapt to the treatment needs of sludge with different moisture contents and ensure stable dewatering effect.

[0068] In some further embodiments, the feed end of the filter cylinder 2 is provided with a circular baffle 28, the outer edge of the circular baffle 28 is concentrically rotatably connected to the inner wall of the filter cylinder 2, the circular baffle 28 is provided with a second mounting hole, and a rotating sleeve 29 is rotatably provided inside the second mounting hole. The end of the second auger blade 22 facing the feed end is connected to the rotating sleeve 29. A section of the outer peripheral wall of the rotating sleeve 29 located outside the outer shell 10 is provided with a second belt 140 groove. The third drive unit is a third motor 14, which is mounted on the outer shell 10. The third motor 14 and the second belt 140 groove are connected by the second belt 140 transmission.

[0069] The circular baffle 28 at the feed end of the filter cylinder 2 is made of the same material as the filter cylinder 2, and its diameter is matched with the inner diameter of the filter cylinder 2. The outer edge of the circular baffle 28 is connected to the inner wall of the filter cylinder 2 through an annular slide rail or a sealed bearing, so that the circular baffle 28 can remain stationary or rotate independently when the filter cylinder 2 rotates.

[0070] A second mounting hole is provided at the center of the circular baffle 28. The rotating sleeve 29 is rotatably mounted in the second mounting hole via a bearing, and the axis of the rotating sleeve 29 coincides with the axis of the filter cylinder 2. The end of the second auger blade 22 facing the feed end is fixedly connected to the outer wall of the rotating sleeve 29 and rotates synchronously with the rotating sleeve 29. A second belt 140 groove is machined on the outer peripheral wall of the rotating sleeve 29 located outside the outer shell 10. The third drive unit adopts a third motor 14, which is fixed to the outer shell 10 by a bracket. The pulley on its output shaft is connected to the second belt 140 groove via the second belt 140. In this structure, the circular baffle 28 serves as a separator and support, the rotating sleeve 29 provides stable rotational support for the second auger blade 22, and the third motor 14 drives the second auger blade 22 to rotate via belt drive. This realizes independent drive of the second auger blade 22, the filter cylinder 2, and the first auger blade 20, which facilitates the adjustment of the speed of the three separately, optimizes the extrusion and dewatering effect, and ensures the structural stability and sealing of the feed end.

[0071] In some further embodiments, the auger shaft 23 passes through the interior of the rotating sleeve 29 and is concentrically connected to the rotating sleeve 29; the second drive unit is the second motor 13, the transmission end of the second motor 13 is connected to the auger shaft 23, and the second motor 13 is mounted on the frame 1 on which the housing 10 is mounted.

[0072] The diameter of the auger shaft 23 is smaller than the inner diameter of the rotating sleeve 29. The auger shaft 23 passes through the inside of the rotating sleeve 29, and the two are connected by bearings to achieve concentric rotation, ensuring that the auger shaft 23 and the rotating sleeve 29 can rotate independently without interfering with each other.

[0073] The second drive unit employs a second motor 13, which is bolted to the frame 1, providing overall support for the equipment. The transmission end of the second motor 13 is connected to one end of the auger shaft 23 via a coupling to transmit power. This structure enables independent drive of the auger shaft 23, allowing the rotational speed of the first auger blade 20 to be adjusted independently. This adjustment coordinates with the rotational speeds of the filter cartridge 2 and the second auger blade 22, adjusting the conveying speed and compression intensity according to the viscosity, moisture content, and other characteristics of the sludge. This improves the equipment's adaptability to different types of sludge and ensures consistent dewatering performance.

[0074] In some further embodiments, the feed inlet 1200 is provided on the circular baffle 28, the feed inlet 1200 is provided with a feed pipe 12, the end of the feed pipe 12 away from the feed inlet 1200 is provided with a feed hopper 120, and the feed pipe 12 is provided on the outer shell 10.

[0075] The feed inlet 1200 is located at an eccentric position on the circular baffle 28 to avoid interference with the rotating sleeve 29. One end of the feed pipe 12 is sealed to the feed inlet 1200, which can be achieved by flange connection or welding to ensure that sludge does not leak.

[0076] The other end of the feed pipe 12 is connected to the feed hopper 120, which has a funnel-shaped structure that is wider at the top and narrower at the bottom, making it convenient for sludge to be poured in. The feed pipe 12 is fixed to the outer wall of the housing 10 by a bracket to ensure its stable position.

[0077] The function of this feeding structure is to facilitate the convenient feeding of sludge through the feeding hopper 120, while the feeding pipe 12 guides the sludge accurately into the filter cylinder 2, preventing sludge from accumulating at the feeding end. At the same time, the fixed feeding pipe 12 is isolated from the rotating filter cylinder 2 and the rotating sleeve 29 by a circular baffle 28, ensuring the smoothness of the feeding process and the sealing of the equipment, and improving the feeding efficiency.

[0078] In some further embodiments, the auger shaft 23 is hollow, and a heating component 24 is provided inside the auger shaft 23, which is connected to the frame 1.

[0079] The auger shaft 23 is made of hollow steel tube, and its hollow internal structure is used to accommodate the heating component 24. The heating component 24 can be an electric heating tube, heating wire, etc. One end of the heating component 24 is fixedly connected to the frame 1, and the other end extends into the interior of the auger shaft 23, with a gap between it and the inner wall of the auger shaft 23 to avoid affecting the rotation of the auger shaft 23.

[0080] The heating component 24 is connected to an external power source via wires, and the heating temperature can be controlled by a thermostat, typically between 60-100℃. During operation, the heat generated by the heating component 24 is transferred to the auger shaft 23, which in turn transfers the heat to the first auger blades 20 and the flowing sludge. After being heated, the sludge exhibits increased water flowability and reduced viscosity, making it easier to be discharged from the filter holes of the filter cylinder 2 under pressure. Simultaneously, moderate heating promotes the evaporation of some water, further improving the dewatering effect and solving the problem of sludge being difficult to dewater due to high viscosity in the prior art.

[0081] In some further embodiments, the interior of the outer casing 10 is provided with a baffle plate 26, which has a clearance hole for the auger shaft 23. The end of the baffle plate 26 facing the discharge port 4 is provided with a blocking cone 27. The inner wall of the outer casing 10 is provided with a telescopic rod 25, the telescopic end of which is connected to the baffle plate 26 to adjust the axial distance between the blocking cone 27 and the discharge port 4. The baffle plate 26 is provided with a clearance groove 31, and the discharge end baffle is provided with a dividing plate 30 corresponding to the clearance groove 31.

[0082] An axial baffle plate 26 is provided inside the outer casing 10. The baffle plate 26 is a circular plate with a clearance hole in its center. The diameter of the clearance hole is larger than the diameter of the auger shaft 23 to ensure that the auger shaft 23 is not interfered with by the baffle plate 26 when it rotates. The blocking cone 27 is a conical structure and is fixed to the end of the baffle plate 26 facing the discharge port 4. Its large diameter end is connected to the baffle plate 26, and its small diameter end faces the discharge port 4. The axis of the blocking cone 27 coincides with the axis of the filter cylinder 2.

[0083] The telescopic rod 25 can be hydraulic or electric. Its fixed end is installed on the inner wall of the housing 10, and its telescopic end is connected to the end of the baffle plate 26 away from the blocking cone 27. By controlling the extension and retraction of the telescopic rod 25, the axial distance between the baffle plate 26 and the blocking cone 27 and the discharge port 4 can be adjusted. When the distance decreases, the channel of sludge at the discharge port 4 narrows, the squeezing pressure increases, and water is further squeezed out; when the distance increases, the squeezing pressure decreases. The effect of this structure is that the squeezing pressure can be flexibly adjusted according to the requirements of sludge dewatering dryness, achieving precise control of the degree of dewatering and improving the practicality of the equipment.

[0084] The dividing plate 30 on the discharge end baffle is used to cut the dewatered sludge squeezed out of the discharge port 4 from the blocking cone 27 to prevent large pieces from caking.

[0085] In some further embodiments, the diameter of the filter cylinder 2 gradually decreases along the direction from the feed inlet 1200 to the discharge outlet 4.

[0086] The filter cylinder 2, pointing from the inlet 1200 towards the outlet 4, gradually decreases in diameter, forming a conical structure. The taper can be set according to the sludge treatment requirements. This conical structure causes the space occupied by the sludge to gradually shrink as it moves along the filter cylinder 2 towards the outlet 4. Under the pushing action of the first auger blade 20 and the second auger blade 22, the squeezing pressure on the sludge gradually increases, creating a progressively stronger squeezing effect from the inlet to the outlet. This allows the water in the sludge to be continuously squeezed out, avoiding the problem of incomplete dewatering caused by insufficient squeezing in the prior art. This significantly improves the degree of sludge dewatering and ensures the quality of sludge treatment.

[0087] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A sludge treatment device for water conservancy construction, characterized in that, include; The filter cartridge (2) is rotatably mounted via a first drive unit; The first auger blade (20) is rotatably disposed inside the filter cylinder (2) via an auger shaft (23); the auger shaft (23) is rotatably disposed via a second drive unit; The filter cylinder (2) has a feed inlet (1200) at one end and a discharge outlet (4) at the other end for discharging sludge after squeezing out water. The first auger blade (20) is connected to the outer wall of the auger shaft (23) at one end away from the feed inlet (1200). An annular gap (21) is provided between the first auger blade (20) and the outer wall of the auger shaft (23). A second auger blade (22) is rotatably disposed in the annular gap (21). The second auger blade (22) is driven by a third drive unit. The outer edge of the second auger blade 22 is adapted to the inner edge of the first auger blade 20 but does not interfere with each other, and the inner edge is adapted to the outer wall of the auger shaft 23, forming a nested structure.

2. The sludge treatment equipment for water conservancy construction according to claim 1, characterized in that, It also includes a housing (10), the filter cylinder (2) is rotatably disposed inside the housing (10), the two ends of the housing (10) are provided with a feed end baffle (16) and a discharge end baffle, the feed port (1200) is disposed through the feed end baffle (16), and the discharge port (4) is disposed on the discharge end baffle.

3. The sludge treatment equipment for water conservancy construction according to claim 2, characterized in that, The feed end baffle (16) is provided with a first mounting hole. The filter cylinder (2) is rotatably installed in the first mounting hole. The outer peripheral wall of the filter cylinder (2) located outside the outer shell (10) is provided with a first belt (110) groove. The first driving part is a first motor (11). The transmission end of the first motor (11) is connected to the first belt (110) groove through the first belt (110).

4. The sludge treatment equipment for water conservancy construction according to claim 3, characterized in that, The feed end of the filter cylinder (2) is provided with a circular baffle (28). The outer edge of the circular baffle (28) is concentrically rotatably connected to the inner wall of the filter cylinder (2). The circular baffle (28) is provided with a second mounting hole. A rotating sleeve (29) is rotatably provided inside the second mounting hole. One end of the second auger blade (22) facing the feed end is connected to the rotating sleeve (29). The outer peripheral wall of the rotating sleeve (29) located outside the outer shell (10) is provided with a second belt (140) groove. The third drive unit is a third motor (14). The third motor (14) is provided on the outer shell (10). The third motor (14) and the second belt (140) groove are connected by the second belt (140) transmission.

5. The sludge treatment equipment for water conservancy construction according to claim 4, characterized in that, The auger shaft (23) passes through the interior of the rotating sleeve (29) and is concentrically connected to the rotating sleeve (29); the second drive unit is a second motor (13), the transmission end of the second motor (13) is connected to the auger shaft (23), and the second motor (13) is mounted on the frame (1) on which the outer shell (10) is mounted.

6. The sludge treatment equipment for water conservancy construction according to claim 4, characterized in that, The feed inlet (1200) is provided on the circular baffle (28), and the feed inlet (1200) is provided with a feed pipe (12). The feed pipe (12) is provided with a feed hopper (120) at one end away from the feed inlet (1200), and the feed pipe (12) is provided on the outer shell (10).

7. The sludge treatment equipment for water conservancy construction according to claim 5, characterized in that, The auger shaft (23) is hollow, and a heating component (24) is provided inside the auger shaft (23). The heating component (24) is connected to the frame (1).

8. The sludge treatment equipment for water conservancy construction according to claim 2, characterized in that, The outer shell (10) is provided with a baffle plate (26) inside. The baffle plate (26) is provided with a clearance hole for the auger shaft (23). The baffle plate (26) is provided with a blocking cone (27) at one end facing the discharge port (4). The inner wall of the outer shell (10) is provided with a telescopic rod (25). The telescopic end of the telescopic rod (25) is connected to the baffle plate (26) to adjust the axial distance between the blocking cone (27) and the discharge port (4). The baffle plate (26) is provided with a clearance groove (31), and the discharge end baffle plate is provided with a dividing plate (30) corresponding to the clearance groove (31).

9. The sludge treatment equipment for water conservancy construction according to claim 1, characterized in that, The diameter of the filter cylinder (2) gradually decreases along the direction from the feed inlet (1200) to the discharge outlet (4).

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