Sludge treatment equipment for water conservancy project

Abstract

The invention belongs to the technical field of sludge treatment, and particularly discloses hydraulic engineering sludge treatment equipment which comprises a rotating shaft, auger blades are arranged on the rotating shaft, and the rotating shaft is rotationally arranged in a stacked spiral cavity; the plurality of fixed rings and the plurality of movable rings are staggered and overlapped in the direction of the rotating shaft to form a circulating cavity for sludge to circulate; and the power shaft is rotationally arranged in the stacked screw cavity and located outside the circulation cavity, connecting holes are formed in the upper edges of the multiple movable rings, the power shaft penetrates through the connecting holes, and protruding parts used for driving the movable rings to move are arranged on the peripheral wall of the power shaft. In the background technology, the moving ring moves irregularly by depending on the friction force of sludge, but according to the scheme, the moving ring is directly driven by the convex part of the power shaft, so that the moving track and the rotating speed of the moving ring can be accurately controlled through the power shaft, and the problem of moving ring failure caused by blockage of sludge impurities is effectively avoided; meanwhile, the movable ring which is actively driven can generate relative movement with the fixed ring more regularly, sludge in the filter seams is continuously cleaned, and the blockage probability of the filter seams is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge treatment, in particular to a sludge treatment equipment for water conservancy projects. BACKGROUND

[0002] Sludge (also referred to as sludge) is a product after sewage treatment, which is an extremely complex heterogeneous body composed of organic residues, bacterial cells, inorganic particles, and colloids. The main characteristic of sludge is high water content, which can be as high as 99% or more. It is a thick substance between liquid and solid, which can be transported by pump, but it is difficult to separate solid and liquid by sedimentation. It is usually separated by a dewatering device for recycling.

[0003] The existing sludge treatment cannot be separated from the dewatering process, which usually uses physical methods such as filter pressing and extrusion to squeeze out the water in the sludge. For example, the common stacked screw sludge dewatering device sets a rotating shaft with auger blades in the channel formed by the interlaced dynamic ring and fixed ring. The sludge and filter water are separated by the extrusion of the auger blade and the relative movement between the dynamic ring and the fixed ring. For example, the stacked screw sludge dewatering machine disclosed in CN114804575A and the stacked screw sludge dewatering machine disclosed in CN116903217A both have certain positive significance. However, in the above common structure, the dynamic ring is usually passively rotated, that is, when the screw shaft rotates and pushes the sludge, the squeezed sludge will generate a circumferential friction force on the inner wall of the dynamic ring sleeved on the shaft, so that the dynamic ring slowly, irregularly and slightly swings or rotates. However, the force generated by the sludge is uncertain, so the force and displacement of the dynamic ring are large or small. In the dewatering process, if the impurities carried by the sludge are stuck between the dynamic ring and the fixed ring, the movement of the dynamic ring will be largely invalid, causing filter gap blockage, turbid filtrate, and reduced dewatering efficiency. SUMMARY

[0004] The purpose of the present application is to provide a sludge treatment equipment for water conservancy projects to solve the above problems.

[0005] To achieve the above purpose, the technical scheme of the present application is as follows: A sludge treatment equipment for water conservancy projects, comprising: a rotating shaft, the rotating shaft is provided with auger blades, and the rotating shaft is rotationally arranged in a stacked screw cavity; a plurality of fixed rings and a plurality of dynamic rings, which are interlaced and stacked along the direction of the rotating shaft to form a flow-through cavity for sludge flow-through; a power shaft, which is rotationally arranged in the stacked screw cavity and located outside the flow-through cavity, the upper edge of each of the plurality of dynamic rings is provided with a connecting hole, the power shaft is arranged through the connecting hole, and the outer peripheral wall of the power shaft is provided with a protruding portion for driving the movement of the dynamic ring.

[0006] Furthermore, an installation rod is provided in the stacked screw cavity, circumferentially rotating around the flow cavity, and the fixed ring is sleeved and connected to the installation rod; the moving ring is provided with an installation hole, the diameter of which is larger than the diameter of the installation rod.

[0007] Furthermore, the protrusion is spirally wound around the outer peripheral wall of the power shaft.

[0008] Furthermore, the protrusion includes a first protrusion and a second protrusion, the first protrusion corresponding to the dehydration section of the flow cavity, and the second protrusion corresponding to the concentration section of the flow cavity; The height of the first protrusion relative to the power shaft is greater than the height of the second protrusion relative to the power shaft; The diameters of the connecting holes and mounting holes on the moving ring corresponding to the first protrusion are both larger than the diameters of the connecting holes and mounting holes on the moving ring corresponding to the second protrusion.

[0009] Furthermore, the sidewall of the moving ring is provided with a first flow channel in the circumferential direction, one end of the first flow channel is located between the inner ring and the outer ring of the moving ring, and the other end is located on the outer ring; The sidewall of the fixed ring is provided with a second flow channel in the circumferential direction. One end of the second flow channel is located between the inner ring and the outer ring of the fixed ring, and the other end is located on the outer ring.

[0010] Furthermore, the first flow channel and the second flow channel are arranged in a circumferentially staggered manner in the flow cavity.

[0011] Furthermore, the outer wall of the stacked screw cavity is provided with an inlet and an outlet; The rotating shaft is provided with a compression sleeve at the outlet, and the compression sleeve is provided with a compression plate for compressing mud cake; a rotating sleeve is rotatably provided on the compression sleeve, and a rotating disk is provided on the rotating sleeve. The outer edge of the rotating disk is provided with a cutting blade for cutting the mud cake extruded between the compression plate and the outlet.

[0012] Furthermore, a first pulley is provided on the rotating shaft, and a second pulley is provided on the power shaft. The first pulley and the second pulley are connected by a first belt, and the diameter of the first pulley is larger than the diameter of the second pulley. The power shaft is also provided with a third pulley, and the extrusion sleeve is provided with a fourth pulley. The third pulley and the fourth pulley are connected by a second belt, and the diameter of the third pulley is larger than that of the fourth pulley.

[0013] Furthermore, it also includes a flocculation mixing tank and a metering tank; the metering tank is provided with a feed inlet, and the flocculation mixing tank is provided with stirring rod blades; The flocculation mixing tank is connected to the outlet via a pipeline.

[0014] Furthermore, a collection trough is provided below the stacked screw cavity.

[0015] The sludge treatment equipment for water conservancy projects disclosed in this application directly drives the moving ring through the protrusion of the power shaft, so that the movement trajectory and rotation speed of the moving ring can be precisely controlled by the power shaft, effectively avoiding the problem of moving ring failure caused by sludge impurities getting stuck; at the same time, the actively driven moving ring can generate relative motion with the fixed ring more regularly, continuously cleaning the residual sludge in the filter gap, significantly reducing the probability of filter gap blockage, and ensuring the stability of filtrate clarity and dewatering efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the extruded portion structure in this application; Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the stacked cavity in this application; Figure 5 for Figure 4 Enlarged view of a portion of point B in the middle; Figure 6 This is a schematic diagram of the power shaft structure in this application; Figure 7 This is a schematic diagram of the dynamic ring, fixed ring, and power shaft structure in this application; Figure 8 This is a schematic diagram of the rotating shaft and auger blade structure in this application; Figure 9 This is a schematic diagram of a set of moving ring and fixed ring structures in this application; Figure 10 for Figure 9 Another structural diagram from a different angle.

[0017] In the picture: 1. Screw press chamber; 10. Inlet; 11. Outlet; 13. End plate; 14. Partition plate; 15. Mounting rod; 2. Rotating shaft; 20. Extrusion sleeve; 21. Extrusion plate; 22. Rotating sleeve; 23. Rotating disk; 24. Cutting blade; 25. Fourth pulley; 26. First pulley; 27. Screw blade; 3. Power shaft; 30. Second pulley; 31. Third pulley; 32. First protrusion; 33. Second protrusion; 4. Moving ring; 40. Connecting hole; 41. First flow channel; 42. Mounting hole; 5. Fixed ring; 50. Second flow channel; 6. Flocculation mixing box; 7. Metering box; 8. Collection tank. Detailed Implementation

[0018] 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.

[0019] like Figures 1-10 As shown, a sludge treatment device for water conservancy projects includes: Rotating shaft 2, with screwdriver blades 27 on it, and rotating shaft 2 is rotatably disposed in the stacked screw cavity 1; Multiple fixed rings 5 ​​and multiple moving rings 4 are staggered and stacked along the direction of the rotation axis 2 to form a flow cavity for the flow of silt; The power shaft 3 is rotatably disposed in the stacked screw cavity 1 and located outside the flow cavity. The upper edge of the multiple moving rings 4 is provided with connecting holes 40. The power shaft 3 is disposed through the connecting holes 40. The outer peripheral wall of the power shaft 3 is provided with protrusions for driving the moving rings 4 to move.

[0020] The rotating shaft 2 is made of high-strength alloy steel. Its two ends are rotatably supported on the end plate 13 of the stacked screw cavity 1 by rolling bearings. The screw blades 27 are fixed to the outer circumference of the rotating shaft 2 by welding or key connection. The pitch of the blades gradually decreases along the direction of sludge flow to achieve progressive extrusion dewatering.

[0021] The stacked cavity 1 is a box-type structure with closed ends, and the interior is reserved for the installation of the rotating shaft 2 and the power shaft 3.

[0022] Multiple fixed rings 5 ​​and moving rings 4 are made of wear-resistant plastic or stainless steel and are stacked alternately along the axial direction of the rotating shaft 2. A filter slit is formed between adjacent fixed rings 5 ​​and moving rings 4 to allow filtered water to flow out. The moving rings 4 and fixed rings 5 ​​together form a flow cavity for sludge to flow from the inlet 10 to the outlet 11. The power shaft 3 is arranged parallel to the rotating shaft 2 and is also rotatably mounted on the end plate 13 of the stacked screw cavity 1 through rolling bearings. It is located in the outer area of ​​the flow cavity to avoid direct contact with the sludge.

[0023] The upper edge of the moving ring 4 is integrally formed with a circular connecting hole 40. The diameter of the connecting hole 40 is larger than the outer diameter of the power shaft 3. After the power shaft 3 passes through all the connecting holes 40 of the moving ring 4, the protrusion of its outer peripheral wall abuts against the inner wall of the connecting hole 40.

[0024] The core improvement of this application lies in changing the passive motion of the moving ring 4 to active driving. In the background technology, the moving ring 4 relies on the friction of sludge to generate irregular motion, while in this solution, the moving ring 4 is directly driven by the protrusion of the power shaft 3, so that the motion trajectory and speed of the moving ring 4 can be precisely controlled by the power shaft 3, effectively avoiding the problem of the moving ring 4 failing due to sludge impurities getting stuck; at the same time, the actively driven moving ring 4 can generate relative motion with the fixed ring 5 more regularly, continuously cleaning the residual sludge in the filter gap, significantly reducing the probability of filter gap blockage, and ensuring the stability of filtrate clarity and dewatering efficiency.

[0025] Furthermore, a mounting rod 15 is provided in the stacked screw cavity 1 to rotate around the flow cavity, and a fixed ring 5 is sleeved and connected to the mounting rod 15; a mounting hole 42 is provided on the moving ring 4, and the diameter of the mounting hole 42 is larger than the diameter of the mounting rod 15.

[0026] At least three mounting rods 15 are evenly fixed along the circumference on the inner sidewall of the stacked screw cavity 1. The mounting rods 15 are parallel to the rotating shaft 2, and the top ring is fixed on the mounting rods 15 to prevent it from moving.

[0027] The diameter of the mounting hole 42 on the moving ring 4 is larger than the diameter of the mounting rod 15, thus providing the moving ring 4 with a small radial and circumferential movement space. This is explained as follows: when the power shaft 3 rotates, its protrusion abuts against the inner circumferential wall of the connecting hole 40, thereby driving the moving ring 4 to move. This causes the moving ring 4 to actively shake and move between two adjacent fixed rings 5, which can promptly remove the sludge that begins to accumulate at the edge of the filter gap and prevent clogging. At the same time, the unobstructed filter gap means that the squeezed water can be smoothly separated and discharged, allowing the sludge to be continuously concentrated and squeezed dry.

[0028] In practice, multiple partitions 14 can be set in the stacked screw cavity 1, and the mounting rod 15 is set between adjacent partitions 14 and between the partition 14 and the end plate 13.

[0029] Furthermore, the protrusion is spirally wound around the outer peripheral wall of the power shaft 3.

[0030] The protrusion adopts a spiral rib structure integrally formed with the power shaft 3. The spiral rib can be the same as or opposite to the spiral direction of the auger blade 27. Its pitch is reasonably set according to the spacing of the moving ring 4 to ensure that the inner wall of the connection hole 40 of each moving ring 4 can continuously contact the protrusion.

[0031] The spiral structure enables the protrusions of the power shaft 3 to generate a continuous circumferential driving force on the moving ring 4 when the shaft rotates, causing the moving ring 4 to rotate smoothly and at a constant speed, rather than oscillating irregularly. Compared with straight protrusions, the spiral protrusions have a larger contact area with the moving ring 4, resulting in more uniform force distribution. This reduces wear on the connecting hole 40 of the moving ring 4 and extends the service life of the moving ring 4. At the same time, the continuous spiral drive makes the relative movement between the moving ring 4 and the fixed ring 5 more coherent, resulting in more thorough cleaning of the filter gaps, avoiding blind spots in local cleaning, and further improving the anti-clogging ability.

[0032] Meanwhile, the protrusions of the spiral structure can prevent all moving rings 4 from moving in unison, thereby increasing the multi-angle squeezing of sludge in the flow cavity.

[0033] Furthermore, the protrusion includes a first protrusion 32 and a second protrusion 33, the first protrusion 32 corresponding to the dehydration section of the flow cavity, and the second protrusion 33 corresponding to the concentration section of the flow cavity; The height of the first protrusion 32 relative to the power shaft 3 is greater than the height of the second protrusion 33 relative to the power shaft 3; The diameters of the connecting hole 40 and mounting hole 42 on the moving ring 4 corresponding to the first protrusion 32 are both larger than the diameters of the connecting hole 40 and mounting hole 42 on the moving ring 4 corresponding to the second protrusion 33.

[0034] The first protrusion 32 and the second protrusion 33 correspond to the dehydration section and the concentration section of the flow cavity, respectively. The concentration section is located on the side of the flow cavity near the inlet 10, and mainly realizes the preliminary dehydration and volume concentration of sludge. The dehydration section is located on the side from the middle of the flow cavity to the outlet 11, and mainly realizes the deep dehydration of sludge.

[0035] The first protrusion 32 and the second protrusion 33 are both spiral rib structures, and they are integrally formed with the power shaft 3.

[0036] The diameters of the connecting holes 40 and mounting holes 42 on the moving ring 4 corresponding to the first protrusion 32 are larger than the diameters of the connecting holes 40 and mounting holes 42 on the moving ring 4 corresponding to the second protrusion 33, so as to ensure that they fit perfectly with the first protrusion 32 and the second protrusion 33, which have different degrees of protrusion. That is, it ensures that the first protrusion 32 and the second protrusion 33 can always abut against the inner wall of the connecting hole 40, and further ensures that the moving ring 4 can swing in any direction of its outward circumference.

[0037] The sludge in the thickening stage has a high water content and strong fluidity, allowing for initial dewatering without significant movement of the moving ring 4. If the protrusions are too high, excessive sludge disturbance may occur, affecting the thickening effect. Conversely, the sludge in the dewatering stage has a lower water content and higher viscosity, making it more prone to residue within the filter gaps. This requires the moving ring 4 to generate a greater displacement to clean the gaps. Therefore, the height of the first protrusion 32 is set to be greater than that of the second protrusion 33 (e.g., the first protrusion 32 is 5-8 mm high, and the second protrusion 33 is 2-4 mm high). This differentiated design specifically matches the sludge characteristics of the thickening and dewatering stages, ensuring the thickening effect while enhancing the anti-clogging capability of the dewatering stage, thus improving the overall dewatering efficiency and processing quality of the equipment.

[0038] Furthermore, the side wall of the moving ring 4 is provided with a first flow channel 41 in the circumferential direction. One end of the first flow channel 41 is located between the inner ring and the outer ring of the moving ring 4, and the other end is located on the outer ring. The side wall of the fixed ring 5 is provided with a second flow channel 50. One end of the second flow channel 50 is located between the inner ring and the outer ring of the fixed ring 5, and the other end is located on the outer ring.

[0039] The sidewall of the moving ring 4 has multiple first flow channels 41 evenly distributed along its circumference. The inner port of the first flow channel 41 is located in the middle area between the inner and outer rings of the moving ring 4, and the outer port extends to the outer ring wall of the moving ring 4. The sidewall of the fixed ring 5 also has multiple second flow channels 50 evenly distributed along its circumference, and its structure is the same as that of the first flow channel 41.

[0040] The existing moving ring 4 and fixed ring 5 usually rely solely on the filter slots at their edges for drainage. The drainage path is short but easily clogged by sludge. The first flow channel 41 and the second flow channel 50 provide additional drainage channels for the filtrate. The flow channels are located on the side walls of the moving ring 4 and fixed ring 5, and the end facing the flow cavity is not opened in the corresponding inner ring, which avoids sludge flowing directly out along the flow channel and is not easily clogged by the flowing sludge. The inner port is located between the inner and outer rings, which can quickly collect the filtrate seeping from the filter slots. The outer port is located in the outer ring, which facilitates the discharge of the filtrate into the stacked screw cavity 1 and then out through the subsequent collection structure. This solves the problem of the existing equipment having a single drainage path and being easily clogged.

[0041] Furthermore, the first flow channel 41 and the second flow channel 50 are arranged in a circumferentially staggered manner in the flow cavity.

[0042] The first flow channel 41 and the second flow channel 50 are staggered in the circumferential direction of the flow cavity, that is, the center line of any first flow channel 41 and the center line of the adjacent second flow channel 50 have a certain angle in the circumferential direction (the size of the angle depends on the number of first flow channels 41 and second flow channels 50).

[0043] If the first flow channel 41 and the second flow channel 50 are arranged directly opposite each other, the filtrate may form a concentrated water flow in the directly opposite area when it is discharged, which will cause the sludge in that area to be over-washed and affect the stable transport of sludge. The staggered arrangement can make the filtrate be discharged evenly in the circumference of the flow chamber, avoid local water flow concentration, ensure the force balance of sludge in the flow chamber, and improve the uniformity of dewatering. At the same time, during the rotation of the moving ring 4, the edge of the first flow channel 41 will slightly scrape against the side wall of the fixed ring 5, and the edge of the second flow channel 50 will also scrape against the side wall of the moving ring 4. The staggered arrangement can expand the scraping coverage area, further clean the sludge residue attached to the ring wall, and reduce the risk of the flow channel itself being blocked.

[0044] Furthermore, the outer wall of the stacked cavity 1 is provided with an inlet 10 and an outlet 11; A compression sleeve 20 is provided on the part of the rotating shaft 2 corresponding to the outlet 11. The compression sleeve 20 is provided with a compression plate 21 for compressing mud cake. A rotating sleeve 22 is rotatably provided on the compression sleeve 20. A rotating disk 23 is provided on the rotating sleeve 22. A cutting blade 24 for cutting the mud cake extruded from between the compression plate 21 and the outlet 11 is provided on the outer edge of the rotating disk 23.

[0045] The outer wall of the stacked conduit chamber 1 has an inlet 10 at one end and an outlet 11 at the other end. The inlet 10 is connected to the subsequent flocculation mixing box 6 through a pipe, and the outlet 11 is a circular opening adapted to the extrusion of mud cake.

[0046] The extrusion sleeve 20 is fixed to the position of the rotating shaft 2 corresponding to the outlet 11 by a key connection. A circular extrusion plate 21 is provided on the outer peripheral wall of the extrusion sleeve 20. The extrusion plate 21 is made of wear-resistant rubber or metal. A gap is left between its outer edge and the inner wall of the outlet 11 for the final extrusion and dewatering of the sludge to be discharged. The rotating sleeve 22 is sleeved on the outer periphery of the extrusion sleeve 20 by a rolling bearing. The rotating disk 23 is fixed to the end of the rotating sleeve 22 by bolts. Multiple cutting blades 24 are evenly fixed on the outer edge of the rotating disk 23 along the circumference. The cutting blades 24 can be metal steel sheets.

[0047] When the dehydration effect is good, the discharged mud cake is mostly long and strip-shaped, which is not easy to collect and process later. The extrusion plate 21 can further improve the dehydration rate of the mud cake and reduce the moisture content to an even lower level. The rotating sleeve 22 achieves the appropriate speed through independent transmission, driving the cutting blade 24 to rotate at high speed. When the mud cake is squeezed out between the extrusion plate 21 and the outlet 11, the cutting blade 24 can quickly cut it into uniform small pieces, which is convenient for subsequent transportation and stacking. The cooperation between the extrusion plate 21 and the cutting blade 24 not only ensures the dehydration effect, but also solves the problem of inconvenient mud cake processing, and improves the integration level of the equipment.

[0048] Furthermore, a first pulley 26 is provided on the rotating shaft 2, and a second pulley 30 is provided on the power shaft 3. The first pulley 26 and the second pulley 30 are connected by a first belt, and the diameter of the first pulley 26 is larger than the diameter of the second pulley 30. The power shaft 3 is also provided with a third pulley 31, and the extrusion sleeve 20 is provided with a fourth pulley 25. The third pulley 31 and the fourth pulley 25 are connected by a second belt. The diameter of the third pulley 31 is larger than that of the fourth pulley 25.

[0049] The first pulley 26 is fixed to one end of the rotating shaft 2 by a key connection, and the second pulley 30 is fixed to the corresponding end of the power shaft 3. The first belt is a synchronous belt or a V-belt, and the second belt is also a synchronous belt or a V-belt to ensure the stability of the transmission. The diameter of the first pulley 26 is 1.5-3 times the diameter of the second pulley 30, so that the rotational speed of the power shaft 3 is 1.5-3 times the rotational speed of the rotating shaft 2. The third pulley 31 is fixed to the end of the power shaft 3 where the second pulley 30 is located, specifically between the second pulley 30 and the stacked screw cavity 1. The fourth pulley 25 is fixed to the outer peripheral wall of the extrusion sleeve 20, and the diameter of the third pulley 31 is 1.2-2 times the diameter of the fourth pulley 25, so that the rotational speed of the extrusion sleeve 20 is 1.2-2 times the rotational speed of the power shaft 3.

[0050] The specific ratio of each pulley is set according to the actual situation, but it always satisfies that the diameter of the first pulley 26 is greater than the diameter of the second pulley 30, and the diameter of the third pulley 31 is greater than the diameter of the fourth pulley 25.

[0051] The core function of the rotating shaft 2 is to push sludge, which requires a large torque and a low speed. The power shaft 3 drives the rotating ring 4 to rotate, which requires a higher speed to achieve the effect of quickly cleaning the filter gaps. Therefore, the speed increase transmission is achieved through the diameter difference between the first pulley 26 and the second pulley 30 to ensure that the speed of the rotating ring 4 meets the cleaning requirements. The extrusion sleeve 20 drives the extrusion plate 21 and the cutting blade 24 to move. The cutting blade 24 requires a moderate speed to ensure the cutting effect. Therefore, the speed increase is achieved through the diameter difference between the third pulley 31 and the fourth pulley 25 to make the speed of the extrusion sleeve 20 match the cutting and extrusion requirements. The entire transmission system uses the rotating shaft 2 as the power source, eliminating the need for an additional motor, simplifying the equipment structure, reducing energy consumption, and through reasonable transmission ratio design, ensuring that the speed of each component is precisely matched with the functional requirements, thereby improving the overall operating efficiency of the equipment.

[0052] Furthermore, it also includes a flocculation mixing box 6 and a metering box 7; the metering box 7 is provided with a feed inlet, and the flocculation mixing box 6 is provided with stirring rod blades; The flocculation mixing tank 6 is connected to the outlet 11 via a pipeline.

[0053] Both the flocculation mixing tank 6 and the metering tank 7 are made of stainless steel. The bottom of the metering tank 7 is equipped with a feed inlet for feeding mud and water raw materials into the tank. The bottom of the metering tank 7 is connected to the flocculation mixing tank 6. The flocculation mixing tank 6 is equipped with a stirring rod inside. One end of the stirring rod is connected to a motor, and the other end is fixed with stirring blades to ensure uniform mixing. The flocculation mixing tank 6 is connected to the inlet 10 of the screw press chamber 1 through a pipe for transporting the sludge mixed with flocculant to the flow chamber.

[0054] The flocculation mixing tank 6 and the metering tank 7 are commonly used in the field of sludge and sediment treatment, and their functions will not be described in detail in this embodiment.

[0055] Furthermore, a collection trough 8 is provided below the stacked screw cavity 1.

[0056] The collection tank 8 has an open structure and can be made of stainless steel. Its length and width are equal to or slightly larger than the bottom dimensions of the stacked screw cavity 1. It is fixedly installed directly below the stacked screw cavity 1. A drain outlet is provided on one side of the collection tank 8 for discharging the collected filtrate.

[0057] The filtrate produced during the dehydration process seeps out from the filter gaps of the fixed ring 5 and the moving ring 4, as well as the first flow channel 41 and the second flow channel 50, and naturally falls into the collection tank 8 below, avoiding direct discharge of filtrate and causing environmental pollution. The size design of the collection tank 8 ensures that all filtrate can be collected without any leakage. The drain outlet can be connected to a pipe to guide the filtrate to a sewage treatment system or recycling equipment, realizing the recycling of filtrate or discharge in compliance with standards, improving the environmental friendliness and resource utilization of the equipment, and solving the problems of inconvenient filtrate collection and easy environmental pollution of existing equipment.

[0058] 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 hydraulic engineering sludge treatment apparatus characterized by comprising: The utility model relates to a kind of spiral press, including: Rotary shaft (2), the rotary shaft (2) is provided with auger blade (27), the rotary shaft (2) rotation is arranged in spiral cavity (1); Multiple fixed rings (5) and multiple moving rings (4) are staggered and stacked along the direction of the rotary shaft (2), forming a flow-through cavity for sludge flow; Power shaft (3), rotation is arranged in the spiral cavity (1) and is located outside the flow-through cavity, multiple moving rings (4) are provided with connecting hole (40) on the upper along, the power shaft (3) is arranged through the connecting hole (40), and the outer peripheral wall of the power shaft (3) is provided with protruding part for driving the movement of the moving ring (4).

2. The hydraulic sludge treatment apparatus according to claim 1, wherein The spiral cavity (1) is rotationally arranged around the flow-through cavity circumferentially with mounting rod (15), and the fixed ring (5) is connected to the mounting rod (15) by sleeving; The moving ring (4) is provided with a mounting hole (42), and the diameter of the mounting hole (42) is greater than the diameter of the mounting rod (15).

3. The hydraulic sludge treatment apparatus according to claim 2, wherein The protruding part is helically arranged on the outer peripheral wall of the power shaft (3).

4. The hydraulic sludge treatment apparatus according to claim 3, wherein The protruding part includes a first protruding part (32) and a second protruding part (33), the first protruding part (32) corresponds to the dehydration section of the flow-through cavity, and the second protruding part (33) corresponds to the concentration section of the flow-through cavity. The height of the first protruding part (32) protruding relative to the power shaft (3) is greater than the height of the second protruding part (33) protruding relative to the power shaft (3). The diameters of the connecting hole (40) and the mounting hole (42) on the moving ring (4) corresponding to the first protruding part (32) are greater than the diameters of the connecting hole (40) and the mounting hole (42) on the moving ring (4) corresponding to the second protruding part (33).

5. The hydraulic sludge treatment apparatus according to claim 1, wherein The side wall of the moving ring (4) is circumferentially provided with a first flow channel (41), one end of the first flow channel (41) is located between the inner ring and the outer ring of the moving ring (4), and the other end is located on the outer ring. The side wall of the fixed ring (5) is circumferentially provided with a second flow channel (50), one end of the second flow channel (50) is located between the inner ring and the outer ring of the fixed ring (5), and the other end is located on the outer ring.

6. The hydraulic sludge treatment apparatus according to claim 5, wherein The first flow channel (41) and the second flow channel (50) are arranged in the circumferential direction of the flow-through cavity.

7. The hydraulic sludge treatment apparatus of claim 1, wherein The outer wall of the spiral cavity (1) is provided with an inlet (10) and an outlet (11); A portion of the rotary shaft (2) corresponding to the outlet (11) is provided with a pressing sleeve (20), the pressing sleeve (20) is provided with a pressing plate (21) for pressing mud cake; A rotating sleeve (22) is rotationally arranged on the pressing sleeve (20), the rotating sleeve (22) is provided with a rotating disc (23), and the outer edge of the rotating disc (23) is provided with a cutting blade (24) for cutting mud cake extruded from between the pressing plate (21) and the outlet (11).

8. The hydraulic sludge treatment apparatus according to claim 7, wherein The rotary shaft (2) is provided with a first pulley (26), the power shaft (3) is provided with a second pulley (30), the first pulley (26) and the second pulley (30) are connected by a first belt, and the diameter of the first pulley (26) is greater than the diameter of the second pulley (30). The power shaft (3) is further provided with a third belt pulley (31), the extrusion sleeve (20) is provided with a fourth belt pulley (25), the third belt pulley (31) and the fourth belt pulley (25) are connected through a second belt, and the diameter of the third belt pulley (31) is greater than that of the fourth belt pulley (25).

9. The hydraulic sludge treatment apparatus according to claim 7, wherein The flocculation mixing box (6) and a metering box (7) are further included; the metering box (7) is provided with an inlet; and the flocculation mixing box (6) is provided with a stirring rod blade. The flocculation mixing box (6) is connected with the outlet (11) through a pipeline.

10. The hydraulic sludge treatment apparatus of claim 1, wherein The stacking spiral cavity (1) is provided below with a collecting groove (8).

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