Municipal engineering construction-based sludge dewatering treatment device and process

Abstract

This invention relates to the field of dredging equipment technology, and discloses a sludge dewatering treatment device and process based on municipal engineering construction. The sludge dewatering treatment device for municipal engineering construction includes a frame, a DC motor fixedly mounted on the outer wall of the frame, and a spiral rod rotatably mounted on the inner wall of the frame. It also includes a limiting component fixedly mounted on the output end of the DC motor, a fixing component fixedly mounted on the inner wall of the frame, a rotating component rotatably mounted on the inner wall of the frame, and a blocking component fixedly mounted on the inner wall of the frame. Addressing the problem of sludge accumulation in the central intersection area caused by the double spiral pushing mechanism, a wave-like undulating motion is formed by the cooperation of corrugated grooves and inclined sliding plates, guiding the sludge to diffuse evenly to both sides. Simultaneously, the rolling column generates high-frequency, small-amplitude vibrations, accelerating the flow of highly viscous sludge, reducing sludge adhesion and accumulation on the disc surface, improving sludge discharge smoothness, and reducing manual cleaning and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of dredging equipment technology, and in particular to a sludge dewatering treatment device and process based on municipal engineering construction. Background Technology

[0002] In municipal engineering construction and pipeline maintenance, a large amount of highly viscous sludge is generated. Due to its advantages of small footprint and continuous operation, the screw press dewatering equipment is widely used for sludge reduction treatment. The double helix screw press structure has gradually become the mainstream dewatering solution due to its larger processing capacity and stronger squeezing force. However, in actual operation, the problem of sludge adhesion at the discharge end has always affected the stable operation of the equipment.

[0003] After the sludge pushed by the double helix reaches the sludge discharge side blocking structure, it will diffuse outward along the helical axis. The two diffused sludge flows form a sludge enrichment area in the middle intersection area. Municipal sludge is generally highly viscous and has poor fluidity, so it is easy to adhere and accumulate here. Long-term operation will cause local blockage of the sludge discharge channel and pressure imbalance in the dewatering chamber, which will not only reduce the overall dewatering efficiency, but also aggravate the wear and tear on the disc and surrounding components.

[0004] Currently, for existing environmental engineering protection equipment, the treatment of sludge accumulation at the discharge end of screw presses mostly relies on manual cleaning during shutdown. This not only results in high operation and maintenance costs and high labor intensity, but also disrupts the continuity of dewatering operations due to frequent start-ups and shutdowns. Some improvement solutions that add external vibrators generally suffer from uneven vibration intensity distribution, making it difficult to accurately target the sludge accumulation area in the middle of the double helix and effectively meet the requirements of anti-sticking and uniform sludge discharge for double helix dewatering equipment. Summary of the Invention

[0005] In view of the problem that high-viscosity sludge tends to accumulate and adhere in the cross-region of the sludge discharge end of the existing double-helix stacked screw dewatering equipment, a sludge dewatering treatment device based on municipal engineering construction is proposed.

[0006] Its purpose is to achieve wave-like mud guiding and high-frequency vibration of the disc surface at the mud discharge end by relying on mechanical linkage, which acts on the mud accumulation area in the middle of the double spiral, guides the sludge to spread evenly, reduces the adhesion and accumulation of highly viscous sludge, improves the smoothness of mud discharge, and reduces the cost of manual cleaning and maintenance.

[0007] The technical solution of the present invention is a sludge dewatering treatment device based on municipal engineering construction, including a frame, a DC motor fixedly installed on the outer wall of the frame, and a screw rod rotatably installed on the inner wall of the frame. It also includes a limiting component fixedly installed at the output end of the DC motor, a fixing component fixedly installed on the inner wall of the frame, a rotating component rotatably installed on the inner wall of the frame, and a blocking component fixedly installed on the inner wall of the frame. The limiting component includes a drive shaft fixedly installed on the outer wall of the output end of the DC motor, a limiting gear fixedly installed on the outer wall of the drive shaft, and a connecting rod fixedly installed on the outer wall of the drive shaft. The outer wall of the connecting rod is fixedly connected to the outer wall of the screw rod. The fixing component includes a fixing frame fixedly disposed on the inner wall of the frame, a through hole opened in the inner wall of the fixing frame, and a blocking strip fixedly disposed on the side wall of the fixing frame; the rotating component includes a rotating shaft rotatably disposed on the inner wall of the frame via a bracket, a driven gear fixedly disposed on the outer wall of the rotating shaft, a driving gear fixedly disposed on the outer wall of the connecting rod, a cam disk fixedly disposed on the outer wall of the rotating shaft, a tensioning belt rollingly disposed on the outer wall of the cam disk, and an agitator rollingly disposed on the inner side wall of the tensioning belt.

[0008] Furthermore, the blocking assembly includes a blocking component fixedly disposed on the inner wall of the frame, a limiting component fixedly disposed on the inner side wall of the frame, and a movable component fixedly disposed on the outer wall of the connecting rod.

[0009] Furthermore, the shielding component includes a fixing plate fixedly disposed on the inner side wall of the frame, a fixing ring fixedly disposed on the inner wall of the fixing plate, damping rods symmetrically fixedly disposed on the outer wall of the fixing plate, a return spring disposed on the outside of the damping rods, an L-shaped plate fixedly disposed on the outer wall of the return spring, and a fixing hole opened in the inner wall of the L-shaped plate.

[0010] Furthermore, the agitating component includes a limiting rod rotatably mounted on the inner wall of the L-shaped plate through a fixing hole, a support frame fixedly mounted on the inner wall of the limiting rod, and an arc-shaped ring fixedly mounted on the outer wall of the support frame.

[0011] Furthermore, the limiting component includes a support plate fixedly disposed on the inner side wall of the frame, an avoidance hole opened on the inner wall of the support plate, and a corrugated groove opened on the outer wall of the support plate.

[0012] Furthermore, the movable component includes a rotating disk fixedly disposed on the outer wall of the connecting rod, a sliding plate slidably disposed on the inner wall of the rotating disk, a groove formed on the outer wall of the sliding plate, a positioning structure slidably disposed on the inner wall of the sliding plate, a compression spring disposed outside the positioning structure, a positioning shaft rotatably disposed on the inner wall of the positioning structure, and a rolling column fixedly disposed on the outer wall of the positioning shaft. The outer wall of the rolling column is rotatably connected to the inner side wall of the fixed ring. One end of the compression spring is fixedly connected to the outer wall of the rotating disk, and the other end of the compression spring is fixedly connected to the outer wall of the sliding plate.

[0013] Furthermore, the positioning structure includes a fixed tube fixedly disposed on the outer wall of the rotating disk and a limiting groove formed on the inner wall of the fixed tube, wherein the inner wall of the fixed tube is slidably connected to the outer wall of the rolling column through the limiting groove.

[0014] Another objective of this invention is to provide a sludge dewatering process based on municipal engineering construction, the purpose of which is to: assist the sludge discharge process to proceed smoothly and ensure the stable operation of the sludge dewatering equipment.

[0015] To achieve the above objectives, the present invention provides the following technical solution: a sludge dewatering treatment process based on municipal engineering construction, comprising the following steps: S1 Start-up Drive and Feeding: Start the DC motor. After the engineering sludge is fed into the equipment, it enters the feeding chamber through the through hole of the fixed frame. The baffle strip on the side wall of the fixed frame prevents the sludge from overflowing outward. S2 Double Helix Extrusion Dewatering: The broken-up sludge enters the double helix dewatering chamber, and the opposing spiral blades extrude the sludge in opposite directions, so that the sludge is gradually compressed in the chamber where the fixed dewatering ring and the movable dewatering ring are superimposed. The water is continuously discharged from the ring gap into the drainage trough of the frame, thus completing the continuous extrusion dewatering of the sludge. S3 Sludge Discharge: When the connecting rod rotates, it drives the drive gear to rotate synchronously. Through gear meshing, it drives the driven gear and the rotating shaft to rotate, which drives the cam disk to rotate synchronously. The tension band on the outer periphery of the cam disk periodically opens and closes with the contour of the cam, which drives the upper and lower agitator components to perform reciprocating linear motion. Under the combined motion of reciprocating translation and rotation, the agitator components break up the clumps of sludge, so that the sludge falls loosely and evenly into the collection tank. S4 Sludge Discharge and Anti-sticking Dredging: After dewatering, the sludge is pushed to the sludge discharge end. After being blocked by the rotating disc, it spreads outward. The rotating disc rotates synchronously with the connecting rod. The rolling column rolls along the inner wall of the fixed ring, which drives the positioning shaft to rotate. The protrusion on the outer wall of the positioning shaft moves along the limit groove of the fixed tube, which drives the rolling column to move back and forth axially. The periodic impact on the back side of the rotating disc generates vibration, causing the highly viscous sludge to flow and fall off.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. To address the issue of sludge accumulation in the central intersection area caused by the double-helix push, a wave-like undulating motion is formed by the corrugated groove and the inclined sliding plate to guide the sludge to spread evenly to both sides. At the same time, the rolling column generates high-frequency small-amplitude vibration, which accelerates the flow of highly viscous sludge, reduces the adhesion and accumulation of sludge on the disc surface, improves the smoothness of sludge discharge, and reduces the cost of manual cleaning and maintenance.

[0017] 2. Relying on the pure mechanical linkage between the cam disc and the tension belt, the arc ring is driven to complete the reciprocating translation and circumferential rotation in sync. Through the arc surface, it can fully cut into the characteristics of highly viscous sludge that is clumped and arched, break up the feed clumps, effectively avoid the feed inlet blockage, and at the same time make the sludge fall evenly into the dewatering chamber, ensuring the stability and uniformity of the subsequent dewatering process.

[0018] 3. The double-helix opposing extrusion structure is adopted. The meshing of the limiting gears ensures that the two shafts rotate synchronously and in opposite directions. Combined with the reverse helical blades, a uniform extrusion force field is formed. The feeding end dispersing mechanism makes the sludge loose and feeds in, so that the high viscosity municipal sludge is fully compressed and the water is continuously discharged from the annular gap, effectively increasing the processing capacity per unit time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a partial structural cross-sectional view of the entire invention; Figure 3 This is a schematic diagram of the overall internal structure of the present invention; Figure 4 This is a partial structural diagram of the limiting component of the present invention; Figure 5 This is a schematic diagram of the overall structure of the fixing component of the present invention; Figure 6 This is a partial structural diagram of the blocking component of the present invention; Figure 7 This is a partial structural schematic diagram of the rotating assembly of the present invention; Figure 8 This is a schematic diagram of the overall structure of the stirring component of the present invention; Figure 9 This is a schematic diagram of the overall structure of the shielding component of the present invention; Figure 10 This is a schematic diagram of the overall structure of the limiting component of the present invention; Figure 11 This is a schematic diagram of the overall structure of the movable component of the present invention; Figure 12 This is a partial structural cross-sectional view of the movable component of the present invention; Figure 13 This is a cross-sectional view of the fixing tube of the present invention.

[0020] In the picture: 1. Frame; 2. DC motor; 3. Limiting assembly; 31. Drive shaft; 32. Limit gear; 33. Connecting rod; 4. Fixing assembly; 41. Fixing bracket; 42. Through hole; 43. Blocking bar; 5. Rotating assembly; 51. Drive gear; 52. Driven gear; 53. Rotating shaft; 54. Cam plate; 55. Tensioning belt; 56. Agitating component; 561. Limiting rod; 562. Support frame; 563. Arc ring; 6. Blocking assembly; 61. Shielding component; 611. Fixing... 612. Fixed plate; 613. Fixed ring; 614. Damping rod; 615. Return spring; 616. L-shaped plate; 617. Fixed hole; 62. Limiting component; 621. Support plate; 622. Clearance hole; 623. Corrugated groove; 63. Moving component; 631. Rotating disk; 632. Sliding plate; 633. Slide groove; 634. Positioning structure; 6341. Fixed tube; 6342. Limiting groove; 635. Compression spring; 636. Rolling column; 637. Positioning shaft; 7. Helical rod. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Example 1, referring to Figure 1 - Figure 7 This is the first embodiment of the present invention, which provides a sludge dewatering treatment device based on municipal engineering construction, including a frame 1, a DC motor 2 fixedly connected to the outer wall of the frame 1, and a screw rod 7 rotatably connected to the inner wall of the frame 1. It also includes a limiting component 3 fixedly connected to the output end of the DC motor 2, a fixing component 4 fixedly connected to the inner wall of the frame 1, a rotating component 5 rotatably connected to the inner wall of the frame 1, and a blocking component 6 fixedly connected to the inner wall of the frame 1. The limiting component 3 includes a drive shaft 31 fixedly connected to the outer wall of the output end of the DC motor 2, a limiting gear 32 fixedly connected to the outer wall of the drive shaft 31, and a connecting rod 33 fixedly connected to the outer wall of the drive shaft 31. The outer wall of the connecting rod 33 is fixedly connected to the outer wall of the screw rod 7. The fixing component 4 includes a fixing frame 41 fixedly connected to the inner wall of the frame 1, a through hole 42 opened in the inner wall of the fixing frame 41, and a blocking strip 43 fixedly connected to the side wall of the fixing frame 41; the rotating component 5 includes a rotating shaft 53 rotatably connected to the inner wall of the frame 1 via a bracket, a driven gear 52 fixedly connected to the outer wall of the rotating shaft 53, a driving gear 51 fixedly connected to the outer wall of the connecting rod 33, a cam disk 54 fixedly connected to the outer wall of the rotating shaft 53, a tensioning belt 55 rollingly connected to the outer wall of the cam disk 54, and an agitating component 56 rollingly connected to the inner side wall of the tensioning belt 55.

[0023] Specifically, after the DC motor 2 starts, the output end drives the transmission shaft 31 of the limiting component 3 to rotate. The transmission shaft 31 drives the screw rod 7 to rotate synchronously through the connecting rod 33. The transmission shafts 31 corresponding to the two sets of screw rods 7 mesh with each other through the limiting gear 32 on the outer wall to ensure that the two shafts rotate at the same speed and in opposite directions. With the help of the reverse-arranged screw blades, they form a squeezing action on the sludge entering the dewatering chamber, so that the sludge is gradually compressed in the cavity where the fixed dewatering ring and the movable dewatering ring are superimposed. Water is continuously discharged from the gap between the rings to the drainage trough of the frame 1, realizing the continuous squeezing and dewatering of the sludge. After the sludge is fed in from the outside, it enters the dewatering feeding area through the through hole 42 on the fixing frame 41 of the fixing component 4. The baffle strip 43 on the side wall of the fixing frame 41 can prevent the sludge from overflowing outward, allowing the sludge to enter the cavity between the fixing frame 41 and the shielding component 61. When the connecting rod 33 rotates, it drives the driving gear 51 on the outer wall to rotate synchronously. Through gear meshing transmission, it drives the driven gear 52 to rotate, which in turn drives the rotating shaft 53, which is mounted on the inner wall of the frame 1 through the bracket, to rotate. The rotating shaft 53 drives... The cam disk 54 at the moving end rotates synchronously. The tension band 55 sleeved on the outer periphery of the cam disk 54 periodically opens and closes under the action of the cam profile, forming a tension support with the upper and lower sets of agitating components 56. When the protrusion of the cam disk 54 rotates to the left and right sides, the tension band 55 is pushed outward on the left and right sides, and the agitating components 56 on the upper and lower sides move closer to each other with the belt. After the protrusion rotates away, the tension band 55 springs back to its original position, and the agitating components 56 retract synchronously, thereby realizing the reciprocating linear motion of the agitating components 56.

[0024] Reference Figure 1 - Figure 7 and Figure 9 The blocking component 6 includes a blocking component 61 fixedly connected to the inner wall of the frame 1, a limiting component 62 fixedly connected to the inner side wall of the frame 1, and a movable component 63 fixedly connected to the outer wall of the connecting rod 33. The blocking component 61 includes a fixing plate 611 fixedly connected to the inner side wall of the frame 1, a fixing ring 612 fixedly connected to the inner wall of the fixing plate 611, a damping rod 613 symmetrically fixedly connected to the outer wall of the fixing plate 611, a return spring 614 sleeved on the outside of the damping rod 613, an L-shaped plate 615 fixedly connected to the outer wall of the return spring 614, and a fixing hole 616 opened in the inner wall of the L-shaped plate 615.

[0025] Specifically, the stirring component 56 is mounted on the L-shaped plate 615 of the shielding component 61 through the fixing hole 616. During the reciprocating motion, the L-shaped plate 615 slides along the side of the fixing plate 611, simultaneously squeezing the return spring 614 and the damping rod 613. The return is achieved by relying on the elastic force of the return spring 614. The damping rod 613 can buffer the impact of the motion, ensure the smooth operation of the reciprocating motion, and avoid rigid collision damage to the components.

[0026] Reference Figure 1 - Figure 8The stirring component 56 includes a limiting rod 561 rotatably connected to the inner wall of the L-shaped plate 615 through a fixing hole 616, a support frame 562 fixedly connected to the inner wall of the limiting rod 561, and an arc-shaped ring 563 fixedly connected to the outer wall of the support frame 562.

[0027] Specifically, as the tension belt 55 of the rotating component 5 rotates with the cam disk 54, the friction between the belt and the wheel surface drives the limiting rod 561 of the stirring component 56 to rotate around its own axis. The limiting rod 561 drives the arc ring 563 to rotate synchronously around the axis through the support frame 562. The arc ring 563 adopts an arc-shaped curved surface structure, which can complete the circumferential rotation while reciprocating with the L-shaped plate 615. Multiple sets of arc-shaped curved surfaces can fully penetrate into the interior of the highly viscous sludge, fully break up the clumps and arches of the sludge, avoid sludge blockage at the feed end, and at the same time make the sludge fall into the dewatering chamber loosely and evenly, improving the uniformity and dewatering efficiency of subsequent extrusion dewatering.

[0028] Reference Figure 1 - Figure 10 The limiting component 62 includes a support plate 621 fixedly connected to the inner side wall of the frame 1, an avoidance hole 622 opened in the inner wall of the support plate 621, and a corrugated groove 623 opened in the outer wall of the support plate 621.

[0029] Specifically, when the sludge pushed by the double helix extrusion reaches the area of ​​the blocking component 6, it diffuses outward after being blocked by the rotating disk 631 of the movable component 63. Although the double helix structure improves the dewatering efficiency, after the sludge pushed by the two helices diffuses, it will form a sludge accumulation in the central intersection area. Highly viscous municipal sludge is prone to adhere and accumulate here. When the connecting rod 33 rotates, it synchronously drives the rotating disk 631 to rotate. The sliding plate 632 on the rotating disk 631 moves circumferentially synchronously with the disk body. The bottom of the sliding plate 632 moves along the limiting component 62. The support plate 621 slides on its surface. The corrugated groove 623 on the surface of the support plate 621 cooperates with the bottom surface of the inclined sliding plate 632. Through the limiting of the groove 633, the sliding plate 632 periodically bulges along the corrugated contour. The compression spring 635 synchronously extends and retracts to assist in the reset, forming a wave-like undulating motion. This can guide the silt to spread evenly to both sides and alleviate the problem of silt accumulation in the middle intersection area of ​​the double helix. The avoidance hole 622 in the middle of the support plate 621 allows the connecting rod 33 to pass through, avoiding structural interference during the rotation process.

[0030] Example 2, refer to Figure 1 - Figure 12This is the second embodiment of the present invention, which differs from the first embodiment in that: the movable component 63 includes a rotating disk 631 fixedly connected to the outer wall of the connecting rod 33, a sliding plate 632 slidably connected to the inner wall of the rotating disk 631, a groove 633 formed on the outer wall of the sliding plate 632, a positioning structure 634 slidably connected to the inner wall of the sliding plate 632, a compression spring 635 sleeved on the outside of the positioning structure 634, a positioning shaft 637 rotatably connected to the inner wall of the positioning structure 634, and a rolling column 636 fixedly connected to the outer wall of the positioning shaft 637. The outer wall of the rolling column 636 is tumblingly connected to the side wall inside the fixed ring 612. One end of the compression spring 635 is fixedly connected to the outer wall of the rotating disk 631, and the other end of the compression spring 635 is fixedly connected to the outer wall of the sliding plate 632.

[0031] Specifically, while the sliding plate 632 moves, the rolling column 636 at the end of the positioning structure 634 rolls along the inner wall of the fixed ring 612, causing the positioning shaft 637 to rotate synchronously.

[0032] Reference Figure 1 - Figure 13 The positioning structure 634 includes a fixed tube 6341 fixedly connected to the outer wall of the rotating disk 631 and a limiting groove 6342 opened in the inner wall of the fixed tube 6341. The inner wall of the fixed tube 6341 is slidably connected to the outer wall of the rolling column 636 through the limiting groove 6342.

[0033] Specifically, the protrusion on the outer wall of the positioning shaft 637 is embedded in the limiting groove 6342 of the fixing tube 6341. The fixing tube 6341 rotates circumferentially with the rotating disk 631. When the positioning shaft 637 rotates, the protrusion on its outer wall moves along the trajectory of the limiting groove 6342, causing the positioning shaft 637 and the rolling column 636 to reciprocate axially, periodically impacting the mud-back side of the rotating disk 631, generating high-frequency small-amplitude vibrations. These vibrations accelerate the flow and diffusion of highly viscous sludge, further reducing the adhesion and accumulation of sludge on the disk surface and improving the smoothness of sludge discharge. The remaining structure is the same as that in Embodiment 1.

[0034] Based on embodiments 1-2, the working principle of this invention is as follows: After the DC motor 2 starts, its output end drives the transmission shaft 31 of the limiting component 3 to rotate. The transmission shaft 31 drives the screw rod 7 to rotate synchronously through the connecting rod 33. The transmission shafts 31 corresponding to the two sets of screw rods 7 mesh with each other through the limiting gear 32 on the outer wall to ensure that the two shafts rotate at the same speed and in opposite directions. With the help of the reverse-arranged screw blades, they form a counter-pressure effect on the sludge entering the dewatering chamber, so that the sludge is gradually compressed in the cavity where the fixed dewatering ring and the movable dewatering ring are superimposed. Water is continuously discharged from the gap between the rings to the drainage trough of the frame 1, realizing continuous compression dewatering of the sludge.

[0035] After the sludge is fed in from the outside, it enters the dewatering feeding area through the through hole 42 on the fixing frame 41 of the fixing component 4. The baffle strip 43 on the side wall of the fixing frame 41 can prevent the sludge from overflowing outward, allowing the sludge to enter the cavity between the fixing frame 41 and the shielding component 61. When the connecting rod 33 rotates, it drives the driving gear 51 on the outer wall to rotate synchronously. Through gear meshing transmission, it drives the driven gear 52 to rotate, which in turn drives the rotating shaft 53, which is mounted on the inner wall of the frame 1 through the bracket, to rotate. The rotating shaft 53 drives... The cam disk 54 at the moving end rotates synchronously. The tension band 55 sleeved on the outer periphery of the cam disk 54 periodically opens and closes under the action of the cam profile, forming a tension support with the upper and lower sets of agitating components 56. When the protrusion of the cam disk 54 rotates to the left and right sides, the tension band 55 is pushed outward on the left and right sides, and the agitating components 56 on the upper and lower sides move closer to each other with the belt. After the protrusion rotates away, the tension band 55 springs back to its original position, and the agitating components 56 retract synchronously, thereby realizing the reciprocating linear motion of the agitating components 56.

[0036] As the tension belt 55 of the rotating component 5 rotates with the cam disk 54, the friction between the belt and the wheel surface drives the limiting rod 561 of the stirring component 56 to rotate around its own axis. The limiting rod 561 drives the arc ring 563 to rotate synchronously around the axis through the support frame 562. The arc ring 563 adopts an arc-shaped curved surface structure, which can complete the circumferential rotation while reciprocating with the L-shaped plate 615. Multiple sets of arc-shaped curved surfaces can fully penetrate into the interior of the highly viscous sludge, fully break up the clumps and arches of the sludge, avoid sludge blockage at the feed end, and at the same time make the sludge fall loosely and evenly into the dewatering chamber, improving the uniformity and dewatering efficiency of subsequent extrusion dewatering.

[0037] The stirring component 56 is mounted on the L-shaped plate 615 of the shielding component 61 through the fixing hole 616. During the reciprocating motion, the L-shaped plate 615 slides along the side of the fixing plate 611, simultaneously squeezing the return spring 614 and the damping rod 613. The return is achieved by the elastic force of the return spring 614, and the damping rod 613 can buffer the impact of the motion, ensure the smooth operation of the reciprocating motion, and avoid rigid collision damage to the components.

[0038] When the sludge pushed by the double helix reaches the area of ​​the blocking component 6, it diffuses outward after being blocked by the rotating disk 631 of the movable component 63. Although the double helix structure improves the dewatering efficiency, the sludge pushed by the two helices will accumulate in the central intersection area after diffusion. Highly viscous municipal sludge tends to adhere and accumulate here. When the connecting rod 33 rotates, it synchronously drives the rotating disk 631 to rotate. The sliding plate 632 on the rotating disk 631 moves circumferentially synchronously with the disk body. The bottom of the sliding plate 632 is supported by the limiting component 62. The surface of plate 621 slides, and the corrugated groove 623 on the surface of the support plate 621 cooperates with the bottom surface of the inclined sliding plate 632. Through the limiting of the groove 633, the sliding plate 632 periodically bulges along the corrugated contour. The compression spring 635 synchronously extends and retracts to assist in the reset, forming a wave-like undulating motion, which can guide the silt to spread evenly to both sides and alleviate the problem of silt accumulation in the middle intersection area of ​​the double helix. The avoidance hole 622 in the middle of the support plate 621 allows the connecting rod 33 to pass through, avoiding structural interference during the rotation process.

[0039] While the sliding plate 632 moves, the rolling column 636 at the end of the positioning structure 634 rolls along the inner wall of the fixed ring 612, causing the positioning shaft 637 to rotate synchronously. The protrusion on the outer wall of the positioning shaft 637 is embedded in the limiting groove 6342 of the fixed tube 6341. The fixed tube 6341 rotates circumferentially with the rotating disk 631. When the positioning shaft 637 rotates, the protrusion on its outer wall moves along the trajectory of the limiting groove 6342, causing the positioning shaft 637 and the rolling column 636 to reciprocate along the axial direction, periodically impacting the mud-back side of the rotating disk 631, generating high-frequency small-amplitude vibrations. The vibrations accelerate the flow and diffusion of highly viscous sludge, further reducing the adhesion and accumulation of sludge on the disk surface and improving the smoothness of sludge discharge.

[0040] Example 3, referring to Figure 1 - Figure 13 The third embodiment of the present invention provides a sludge dewatering treatment process based on municipal engineering construction, comprising the following steps: S1 Start-up drive and feeding: Start DC motor 2, after the sludge from the engineering project is fed into the equipment, it enters the feeding chamber through the through hole 42 of the fixed frame 41. The blocking strip 43 on the side wall of the fixed frame 41 prevents the sludge from overflowing outward. S2 Double Helix Extrusion Dewatering: The broken-up sludge enters the double helix dewatering chamber, and the opposing spiral blades extrude the sludge in opposite directions, so that the sludge is gradually compressed in the chamber where the fixed dewatering ring and the movable dewatering ring are superimposed. The water is continuously discharged from the ring gap into the drainage trough of the frame 1, thus completing the continuous extrusion dewatering of the sludge. S3 Sludge Discharge: When the connecting rod 33 rotates, it drives the drive gear 51 to rotate synchronously. Through gear meshing, it drives the driven gear 52 and the rotating shaft 53 to rotate, which drives the cam disk 54 to rotate synchronously. The tension band 55 on the outer periphery of the cam disk 54 periodically opens and closes with the contour of the cam, which drives the upper and lower agitator components 56 to perform reciprocating linear motion. Under the combined motion of reciprocating translation and rotation, the agitator components 56 break up the clumps of sludge, so that the sludge falls loosely and evenly into the collection tank. S4 Sludge Discharge and Anti-sticking Dredging: The dewatered sludge is pushed to the sludge discharge end and spreads outward after being blocked by the rotating disk 631. The rotating disk 631 rotates synchronously with the connecting rod 33, and the rolling column 636 rolls along the inner wall of the fixed ring 612, driving the positioning shaft 637 to rotate. The protrusion on the outer wall of the positioning shaft 637 moves along the trajectory of the limiting groove 6342 of the fixed tube 6341, driving the rolling column 636 to reciprocate axially, periodically impacting the sludge-back side of the rotating disk 631 to generate vibration, causing the highly viscous sludge to flow and fall off.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sludge dewatering treatment device based on municipal engineering construction, comprising a frame (1), a DC motor (2) fixedly installed on the outer wall of the frame (1), and a screw rod (7) rotatably installed on the inner wall of the frame (1), characterized in that, It also includes a limiting component (3) fixedly installed at the output end of the DC motor (2), a fixing component (4) fixedly installed on the inner wall of the frame (1), a rotating component (5) rotatably installed on the inner wall of the frame (1), and a blocking component (6) fixedly installed on the inner wall of the frame (1). The limiting component (3) includes a drive shaft (31) fixedly disposed on the outer wall of the output end of the DC motor (2), a limiting gear (32) fixedly disposed on the outer wall of the drive shaft (31), and a connecting rod (33) fixedly disposed on the outer wall of the drive shaft (31). The outer wall of the connecting rod (33) is fixedly connected to the outer wall of the screw rod (7). The fixing component (4) includes a fixing frame (41) fixedly installed on the inner wall of the frame (1), a through hole (42) opened on the inner wall of the fixing frame (41), and a blocking strip (43) fixedly installed on the side wall of the fixing frame (41). The rotating assembly (5) includes a rotating shaft (53) rotatably mounted on the inner wall of the frame (1) via a bracket, a driven gear (52) fixedly mounted on the outer wall of the rotating shaft (53), a driving gear (51) fixedly mounted on the outer wall of the connecting rod (33), a cam disk (54) fixedly mounted on the outer wall of the rotating shaft (53), a tension belt (55) rolling on the outer wall of the cam disk (54), and an agitator (56) rolling on the inner side wall of the tension belt (55).

2. The sludge dewatering treatment device based on municipal engineering construction according to claim 1, characterized in that: The blocking assembly (6) includes a blocking component (61) fixedly installed on the inner wall of the frame (1), a limiting component (62) fixedly installed on the inner side wall of the frame (1), and a movable component (63) fixedly installed on the outer wall of the connecting rod (33).

3. The sludge dewatering treatment device based on municipal engineering construction according to claim 2, characterized in that: The shielding component (61) includes a fixing plate (611) fixedly disposed on the inner side wall of the frame (1), a fixing ring (612) fixedly disposed on the inner wall of the fixing plate (611), a damping rod (613) symmetrically fixedly disposed on the outer wall of the fixing plate (611), a return spring (614) disposed on the outside of the damping rod (613), an L-shaped plate (615) fixedly disposed on the outer wall of the return spring (614), and a fixing hole (616) opened on the inner wall of the L-shaped plate (615).

4. The sludge dewatering treatment device based on municipal engineering construction according to claim 3, characterized in that: The stirring component (56) includes a limiting rod (561) rotatably disposed on the inner wall of the L-shaped plate (615) through a fixing hole (616), a support frame (562) fixedly disposed on the inner wall of the limiting rod (561), and an arc-shaped ring (563) fixedly disposed on the outer wall of the support frame (562).

5. A sludge dewatering treatment device based on municipal engineering construction according to claim 2, characterized in that: The limiting component (62) includes a support plate (621) fixedly disposed on the inner side wall of the frame (1), a clearance hole (622) opened on the inner wall of the support plate (621), and a corrugated groove (623) opened on the outer wall of the support plate (621).

6. A sludge dewatering treatment device based on municipal engineering construction according to claim 3, characterized in that: The movable component (63) includes a rotating disk (631) fixedly disposed on the outer wall of the connecting rod (33), a sliding plate (632) slidably disposed on the inner wall of the rotating disk (631), a groove (633) opened on the outer wall of the sliding plate (632), a positioning structure (634) slidably disposed on the inner wall of the sliding plate (632), a compression spring (635) disposed on the outside of the positioning structure (634), a positioning shaft (637) rotatably disposed on the inner wall of the positioning structure (634), and a rolling column (636) fixedly disposed on the outer wall of the positioning shaft (637). The outer wall of the rolling column (636) is tumbledly connected to the inner side wall of the fixed ring (612). One end of the compression spring (635) is fixedly connected to the outer wall of the rotating disk (631), and the other end of the compression spring (635) is fixedly connected to the outer wall of the sliding plate (632).

7. A sludge dewatering treatment device based on municipal engineering construction according to claim 6, characterized in that: The positioning structure (634) includes a fixed tube (6341) fixedly disposed on the outer wall of the rotating disk (631) and a limiting groove (6342) opened on the inner wall of the fixed tube (6341). The inner wall of the fixed tube (6341) is slidably connected to the outer wall of the rolling column (636) through the limiting groove (6342).

8. A sludge dewatering treatment device based on municipal engineering construction, employing the sludge dewatering treatment process based on municipal engineering construction as described in claim 7, characterized in that, Includes the following steps: S1 Start-up drive and feeding: Start the DC motor (2), and after the sludge from the engineering project is fed into the equipment, it enters the feeding chamber through the through hole (42) of the fixed frame (41). The blocking strip (43) on the side wall of the fixed frame (41) prevents the sludge from overflowing outward. S2 Double Helix Extrusion Dewatering: The broken sludge enters the double helix dewatering chamber, and the reverse-arranged helical blades extrude the sludge in opposite directions, so that the sludge is gradually compressed in the chamber where the fixed dewatering ring and the movable dewatering ring are superimposed. The water is continuously discharged from the ring gap into the drainage trough of the frame (1) to complete the continuous extrusion dewatering of the sludge. S3 Sludge Discharge: When the connecting rod (33) rotates, it drives the active gear (51) to rotate synchronously. Through gear meshing, it drives the driven gear (52) and the rotating shaft (53) to rotate, which drives the cam disk (54) to rotate synchronously. The tension belt (55) on the outer periphery of the cam disk (54) periodically opens and closes with the contour of the cam, which drives the upper and lower agitator components (56) to perform reciprocating linear motion. Under the combined motion of reciprocating translation and rotation, the agitator components (56) break up the clumps of sludge, so that the sludge falls loosely and evenly into the collection tank. S4 Sludge Discharge and Anti-sticking: The dewatered sludge is pushed to the discharge end and spreads outward after being blocked by the rotating disk (631). The rotating disk (631) rotates synchronously with the connecting rod (33), and the rolling column (636) rolls along the inner wall of the fixed ring (612), which drives the positioning shaft (637) to rotate. The outer wall protrusion of the positioning shaft (637) moves along the trajectory of the limiting groove (6342) of the fixed tube (6341), which drives the rolling column (636) to move back and forth axially. It periodically impacts the back side of the rotating disk (631) to generate vibration, causing the highly viscous sludge to flow and fall off.

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