Sewage sludge removing equipment for water conservancy project

Abstract

The invention provides sewage sludge removing equipment for a water conservancy project, and relates to the technical field of sludge treatment equipment, the sewage sludge removing equipment comprises a conveying circular pipe, a driving shaft is rotatably mounted in the conveying circular pipe, a first motor is fixedly mounted at the tail end of the conveying circular pipe, and the output end of the first motor is fixedly connected with the driving shaft; a spiral blade is fixedly mounted on the surface of the driving shaft, a sleeve is rotationally mounted in the conveying round pipe, the driving shaft rotates to drive the spiral blade to rotate, the spiral blade rotates to drive sludge to move upwards in the conveying round pipe, the end of the conical discharging pipe is a conical extrusion section, and the sludge is further compressed, and water is further extruded; the spiral pitch changes to form the volume decreasing effect, sludge is gradually extruded in the conveying process, water is discharged out of blade gaps or pipe wall filtering holes, the conical section can generate concentrated extrusion force, the dewatering efficiency is improved, solid mud cakes are discharged out of the discharging groove between the two discharging plates, and the sludge cleaning capacity is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sludge treatment equipment, and more specifically, relates to sewage sludge removal equipment used in water conservancy projects. Background Art

[0002] In the field of sewage sludge removal in water conservancy projects, existing equipment and technologies face many severe challenges, which seriously affect the sludge cleaning efficiency, dewatering effect, and equipment stability and service life.

[0003] First, traditional sludge conveying and dewatering equipment has obvious shortcomings when dealing with high-water-content sludge. Common conveying methods cannot effectively cope with the high viscosity and fluidity of high-water-content sludge, and are prone to problems such as blockage and poor conveying during the conveying process. Moreover, traditional equipment often uses spiral blades with a single pitch and blade depth, which makes it difficult to effectively handle the sludge according to its state changes during transportation, and cannot achieve gradual compression and efficient dehydration of the sludge. This leads to low dewatering efficiency, and the moisture content of the treated mud cake is still high, which not only increases the difficulty and cost of subsequent treatment, but may also cause secondary pollution to the environment.

[0004] Secondly, regarding sludge filtration and drainage, traditional equipment suffers from problems such as small filtration area and poorly designed drainage channels. For sludge containing fine particles, the small filtration area cannot meet the filtration requirements, easily causing clogging of the filter holes and affecting the normal operation of the equipment. Furthermore, poorly designed drainage channels prevent the timely and effective discharge of water, further reducing the dehydration effect. Furthermore, traditional equipment often relies on high-energy vibration devices to clean the mud cake on the surface of the filter holes, which not only increases energy consumption but also may cause significant mechanical damage to the equipment itself, shortening its service life.

[0005] Furthermore, spiral blades are prone to "shaft seizure" during sludge conveying. Due to the viscosity of sludge, it can adhere to the inner surface of the spiral blades. This not only affects conveying efficiency but can also increase friction between the spiral blades and the drive shaft, causing "shaft seizure" and disrupting normal operation of the equipment. Existing cleaning methods are often ineffective, making it difficult to completely remove the sludge stuck to the inner surface of the spiral blades without damaging them.

[0006] Furthermore, sewage sludge from water conservancy projects often contains large impurities and stringy materials. Conventional removal equipment lacks effective pre-treatment mechanisms, allowing these impurities and strings to easily enter the conveying system, leading to equipment blockages and spiral blade entanglement, seriously affecting the equipment's stability and service life. Furthermore, existing equipment often requires manual intervention to handle these impurities and strings, increasing labor intensity and reducing cleaning efficiency.

[0007] In summary, existing sewage sludge removal equipment for water conservancy projects has numerous shortcomings in terms of sludge transport and dewatering, filtration and drainage, spiral blade cleaning, and impurity and rope handling. These shortcomings fail to meet the demands of modern water conservancy projects for efficient, environmentally friendly, and stable sludge removal. Therefore, there is an urgent need to develop a new type of sewage sludge removal equipment to address these issues and improve the overall level of sewage sludge removal in water conservancy projects. Summary of the Invention

[0008] In order to solve the above technical problems, the present invention provides a sewage sludge removing device for water conservancy projects to solve the above problems.

[0009] A sewage sludge removal device for water conservancy projects comprises a conveying circular pipe, a drive shaft is rotatably installed inside the conveying circular pipe, a first motor is fixedly installed at the end of the conveying circular pipe, and the output end of the first motor is fixedly connected to the drive shaft, a spiral blade is fixedly installed on the surface of the drive shaft, a sleeve is rotatably installed inside the conveying circular pipe, and a drainage gap is separated from the sleeve and the conveying circular pipe, a guide rib is fixedly installed on the inner wall of the sleeve, and at least two multi-stage bosses are rotatably installed on the surface of the supporting round rod drainage gap, and at least two scrapers are fixedly installed on the side wall of each of the multi-stage bosses, and the side wall of each scraper is in contact with the inner wall of the spiral blade.

[0010] Preferably, a conical discharge pipe is fixedly installed at the discharge end of the conveying circular pipe, and two discharge plates are provided at the end of the conical discharge pipe, which are respectively fixedly connected to the end of the conical discharge pipe and the end of the driving shaft, and a discharge trough is formed between the two discharge plates, and a filter rack is fixedly installed at the end of the conveying circular pipe near the first motor, and a first filter rack is provided on the side wall of the filter rack, and the first filter rack is adapted to the position of the drainage gap, and a second filter rack is provided on the lower side wall of the conveying circular pipe, and each of the multi-stage bosses is provided with a convex rod on the side wall, and a concave frame is fixedly sleeved on the surface of each supporting circular rod, and each of the convex rods is located in the concave frame, and a first spring is fixedly installed between the two side walls of the convex rod and the inner wall of the concave frame, and the surface of each drainage gap is provided with a limiting ring for limiting the horizontal sliding of the multi-stage boss.

[0011] Preferably, the multi-stage boss forms an extrusion surface that is "steep in front and gentle in the back" from front to back, and at least two semi-ring cams are fixedly installed on the upper and lower surfaces of each multi-stage boss, and the arc-shaped outer surface of the semi-ring cam slides in fit with the inner wall of the sleeve. The semi-ring cam on each multi-stage boss gradually increases in volume from front to back, and two limit plates are fixedly installed on the side walls of the multi-stage boss, and each scraper is located between the two limit plates. A rubber connecting piece is fixedly installed between each scraper and the side wall of the multi-stage boss, and each scraper is provided with a convex scraper near the front side, and a hollow groove is provided in the middle of each scraper.

[0012] Preferably, a support frame is provided above the feeding end of the conveying circular pipe, and a sludge screen frame is provided above the support frame, and a fixing frame is fixedly installed on both sides of each of the sludge screen frames, and a second spring is fixedly installed between each fixing frame and the top of the support frame, and an inclined rod is fixedly installed on the top of the support frame. The sludge screen frame is sloped as a whole, and the slope is lower on the side close to the feeding end of the conveying circular pipe, and a vibration assembly is fixedly installed on both sides of the sludge screen frame, and the cam of the vibration assembly cooperates with the inclined rod, and a screen is fixedly installed inside the sludge screen frame, and a blocking frame is fixedly installed on the end of the screen, and a discharge pipe is fixedly installed at the discharge port of the sludge screen frame, and the blocking frame is located above the discharge pipe.

[0013] Preferably, two groups of connecting frames are fixedly installed on the top of the sludge screen frame, a rotating frame is installed inside each of the connecting frames, a spoon-shaped frame is fixedly installed on the surface of each rotating frame, a winding rod is fixedly installed on the side wall of each spoon-shaped frame, a fixing rod is fixedly installed on the surface of the rotating frame between each two spoon-shaped frames, a second motor is fixedly installed on the end of each fixing rod, and at least two cutting blades are fixedly installed on the surface of the output shaft of each second motor.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the front section of the spiral blade of the device adopts a large pitch, shallow blade depth spiral blade, which quickly absorbs high-water content sludge and reduces resistance. In the middle transmission section, the pitch gradually decreases and the blade depth gradually increases to form a compression channel, which applies axial extrusion pressure to the sludge. The first motor starts to drive the drive shaft to rotate, and the rotation of the drive shaft drives the spiral blade to rotate. The rotation of the spiral blade drives the sludge to move upward in the conveying circular pipe. The end of the tapered discharge pipe is a tapered extrusion section, which further compresses the sludge and squeezes out water. The pitch change forms a "volume decreasing" effect. The sludge is gradually squeezed during transmission, and the water is discharged from the blade gap or the filter hole of the pipe wall. The tapered section can generate concentrated extrusion force to improve the dehydration efficiency. The solid mud cake is discharged from the discharge trough between the two discharge plates, which greatly improves the sludge cleaning ability.

[0015] In the present invention, the rotation of the spiral blade drives the silt to move, and the silt rotates and moves to contact the guide ribs inside the sleeve. The guide ribs and the spiral blades have opposite turning directions, so that the sleeve rotates in the opposite direction as the silt pushes it. Filter holes are provided on the inner wall of the sleeve, and a drainage gap is left between the conveying circular pipe and the inner wall of the sleeve as a drainage channel. The reversely rotating sleeve can automatically scrape off the mud cake on the surface of the filter hole through the guide ribs, replacing the traditional vibration device, reducing energy consumption, and having a large filtering area, which is suitable for treating silt containing fine particles.

[0016] In the present invention, a filter rack is fixedly installed at the end of the conveying circular pipe near the first motor, a first filter is provided on the side wall of the filter rack, and the first filter is adapted to the position of the drainage gap, and a second filter is provided on the lower side wall of the conveying circular pipe. When in use, the spiral blade drives the silt to move upward, and the water in the silt falls from the second filter of the conveying circular pipe, and the other part of the water is discharged through the drainage gap and the filter rack.

[0017] The scraper blade and the multi-stage boss are connected by a rubber connecting piece, so that the scraper blade will squeeze the rubber connecting piece and deform when it is subjected to force, and the scraper blade can be deflected. The limit plates on both sides limit the deflection of the scraper blade, so that the scraper blade can clean the inner wall of the spiral blade without damaging the spiral blade, thereby reducing the risk of "shaft sticking".

[0018] In the present invention, the surface of each drainage gap is provided with a limiting ring for limiting the horizontal sliding of the multi-stage boss. The limiting ring is located on the side of the multi-stage boss and is fixedly connected to the drainage gap. When in use, when the multi-stage boss is in contact with the spiral blade and subjected to force, the multi-stage boss will turn to a certain extent. The multi-stage boss drives the convex rod to turn, and the convex rod turns in the concave frame, and a first spring is provided in the convex rod. The first spring can help the multi-stage boss to reset under certain circumstances, thereby improving the fit between the multi-stage boss and the spiral blade during rotation.

[0019] In the present invention, a blocking frame is fixedly installed at the end of the screen, a discharge pipe is fixedly installed at the discharge port of the sludge screen frame, the lower part of the discharge pipe is fixedly connected to the feed end of the conveying circular pipe, and the blocking frame is located above the discharge pipe. The sludge is pumped into the sludge screen frame from the waterway, and the vibration components on both sides of the sludge screen frame start to operate. The rotation of the cam contacts the inclined rod to drive the sludge screen frame itself to vibrate, and the sludge flows downward from the sludge screen frame. Large particles of impurities in the sludge remain on the screen. At the same time, the rope will contact the spoon-shaped frame and the winding rod, and the large particles of impurities are blocked and retained by the blocking frame, thereby improving the stability of the equipment during subsequent sludge cleaning.

[0020] In the present invention, a fixed rod is fixedly installed on the surface of the rotating frame between each two spoon-shaped frames, a second motor is fixedly installed on the end of each fixed rod, and at least two cutting blades are fixedly installed on the output shaft surface of each second motor. When in use, a part of the rope in the sludge will be intercepted by the spoon-shaped frame and the winding rod, and the second motor at the end of the fixed rod is started. The second motor drives the three cutting blades to rotate, and the cutting blades cut the ropes into segments, reducing the influence of subsequent ropes on the spiral blades. The two ends of the rotating frame can rotate in the connecting frame, so when large particles roll down, they will drive the rotating frame to rotate upward, so that they can fall smoothly to the blocking frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the conveying circular tube structure of the present invention; Figure 2 It is a schematic structural diagram of the filter frame of the present invention; Figure 3 This is a schematic diagram of the structure of the tapered discharge pipe of the present invention; Figure 4 It is a schematic diagram of the sleeve structure of the present invention; Figure 5 It is a schematic diagram of the structure of the discharge plate of the present invention; Figure 6 It is a schematic diagram of the multi-stage boss structure of the present invention; Figure 7 This is a schematic diagram of the semi-ring cam structure of the present invention; Figure 8 This is a schematic diagram of the structure of the discharge pipe of the present invention; Figure 9 Schematic diagram of the screen structure of the present invention; Figure 10 It is a schematic structural diagram of a cutting blade of the present invention.

[0022] In the figure, the corresponding relationship between the names of the components and the accompanying drawing numbers is as follows: 1. conveying tube; 12. filter frame; 13. first motor; 14. drive shaft; 15. spiral blade; 16. conical discharge pipe; 17. discharge plate; 18. drainage gap; 19. sleeve; 2. guide rib; 21. discharge trough; 22. multi-stage boss; 23. convex rod; 24. first spring; 25. semi-ring cam; 26. limit plate; 27. rubber connecting piece; 2 8. Scraper; 29. Convex scraper; 3. Hollow groove; 31. Support frame; 32. Inclined rod; 34. Vibration assembly; 35. Fixed frame; 36. Second spring; 37. Sludge screen frame; 38. Screen; 39. Blocking frame; 4. Discharge pipe; 41. Rotating frame; 42. Connecting frame; 43. Spoon-shaped frame; 44. Winding rod; 45. Fixed rod; 46. Second motor; 47. Cutting blade; 48. Concave frame; 49. Support round rod. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0024] See also Figures 1-10 The present invention provides a sewage sludge removal device for water conservancy projects, comprising a conveying circular pipe 1, a driving shaft 14 is rotatably installed inside the conveying circular pipe 1, a first motor 13 is fixedly installed at the end of the conveying circular pipe 1, and the output end of the first motor 13 is fixedly connected to the driving shaft 14, a spiral blade 15 is fixedly installed on the surface of the driving shaft 14, a sleeve 19 is rotatably installed inside the conveying circular pipe 1, and a drainage gap 18 is spaced between the sleeve 19 and the conveying circular pipe 1, a guide rib 2 is fixedly installed on the inner wall of the sleeve 19, and the drainage gap 18 is sleeved outside the spiral blade 15, a conical discharge pipe 16 is fixedly installed at the discharge end of the conveying circular pipe 1, two discharge plates 17 are provided at the end of the conical discharge pipe 16, the two discharge plates 17 are fixedly connected to the end of the conical discharge pipe 16 and the end of the driving shaft 14 respectively, and a discharge trough 21 is formed between the two discharge plates 17, three groups of supporting round rods 49 are fixedly installed on the inner wall of the conveying circular pipe 1, and at least two multi-stage The boss 22, each multi-stage boss 22 has at least two scrapers 28 fixedly mounted on its side wall, and the side wall of each scraper 28 is in contact with the inner wall of the spiral blade 15. When in use, the front section of the spiral blade 15 of the present device adopts a large pitch, shallow blade depth spiral blade to quickly absorb high-water content sludge and reduce resistance. In the middle transmission section, the pitch gradually decreases and the blade depth gradually increases to form a compression channel, exerting axial extrusion pressure on the sludge. The first motor 13 is started to drive the drive shaft 14 to rotate, and the rotation of the drive shaft 14 drives the spiral blade 15 to rotate. The rotation of the spiral blade 15 drives the sludge to move upward in the conveying circular pipe 1. The end of the conical discharge pipe 16 is a conical extrusion section, which further compresses the sludge and squeezes out water. The pitch change forms a "volume decreasing" effect. The sludge is gradually squeezed during transmission, and the water is discharged from the blade gap or the filter hole of the pipe wall. The conical section can generate concentrated extrusion force to improve the dehydration efficiency. The solid mud cake is discharged from the discharge trough 21 between the two discharge plates 17, which greatly improves the sludge cleaning ability. The rotation of the spiral blade 15 drives the silt to move, and the silt rotates and moves to contact the guide rib 2 inside the sleeve 19. The guide rib 2 is opposite to the turning direction of the spiral blade 15, so that the sleeve 19 rotates in the opposite direction as the silt pushes it. Filter holes are provided on the inner wall of the sleeve 19, and a drainage gap 18 is left between the conveying circular pipe 1 and the inner wall of the sleeve 19 as a drainage channel. The reversely rotating sleeve 19 can automatically scrape off the mud cake on the surface of the filter hole through the guide rib 2, replacing the traditional vibration device, reducing energy consumption, and having a large filtering area, which is suitable for treating silt containing fine particles.

[0025] A filter rack 12 is fixedly installed at the end of the conveying circular pipe 1 near the first motor 13. A first filter is provided on the side wall of the filter rack 12, and the first filter is adapted to the position of the drainage gap 18. A second filter is provided on the lower side wall of the conveying circular pipe 1. When in use, the spiral blades 15 drive the sludge to move upward, and the water in the sludge falls from the second filter of the conveying circular pipe 1, and the other part of the water is discharged through the drainage gap 18 and the filter rack 12. The multi-stage boss 22 forms an extrusion surface that is "steep in front and gentle in the back" from front to back, and at least two semi-ring cams 25 are fixedly installed on the upper and lower surfaces of each multi-stage boss 22. The arc-shaped outer surface of the semi-ring cam 25 slides and fits with the inner wall of the sleeve 19. The semi-ring cam 25 on each multi-stage boss 22 gradually increases in size from front to back. Two limit plates 26 are fixedly installed on the side wall of the multi-stage boss 22. Each scraper 28 is located between the two limit plates 26. A rubber connecting piece 27 is fixedly installed between each scraper 28 and the side wall of the multi-stage boss 22. A convex scraper 29 is provided near the front side of each scraper 28. A hollow groove 3 is provided in the middle of each scraper 28. When in use, the side wall of the spiral blade 15 will fit with the scraper 28 on the side wall of the multi-stage boss 22 when the spiral blade 15 rotates. The scraper 28 and the side wall of the spiral blade 15 squeeze the silt. At the same time, the multi-stage boss 22 itself and the semi-ring cam 25 that changes from small to large squeeze the silt. The scraper 28 is fan-shaped, and when the scraper 28 is subjected to force, the hollow groove 3 is squeezed and deformed, so that the convex scraper 29 on the front side of the scraper 28 can fit more closely to the inner root of the spiral blade 15 close to the drive shaft 14, thereby improving the cleaning range. The scraper 28 and the multi-stage boss 22 are connected by a rubber connecting piece 27. Therefore, when the scraper 28 is subjected to force, the rubber connecting piece 27 is squeezed and deformed, and the scraper 28 can be deflected. The limit plates 26 on both sides limit the deflection of the scraper 28, so that the scraper 28 can clean the inner wall of the spiral blade 15 without damaging the spiral blade 15, thereby reducing the risk of "shaft seizure". The side walls of each multi-stage boss 22 are provided with a convex rod 23, and the surface of each supporting round rod 49 is fixedly sleeved with a concave frame 48, each convex rod 23 is located in the concave frame 48, and a first spring 24 is fixedly installed between the two side walls of the convex rod 23 and the inner wall of the concave frame 48, and the surface of each supporting round rod 49 is provided with a limit ring for limiting the horizontal sliding of the multi-stage boss 22, and the limit ring is located on the side of the multi-stage boss 22 and is fixedly connected to the supporting round rod 49. When in use, when the multi-stage boss 22 is in contact with the spiral blade 15 and subjected to force, the multi-stage boss 22 will undergo a certain rotation, and the multi-stage boss 22 drives the convex rod 23 to rotate, and the convex rod 23 rotates in the concave frame 48, and a first spring 24 is provided in the convex rod 23. The first spring 24 can help the multi-stage boss 22 to reset under certain circumstances, thereby improving the fit between the multi-stage boss 22 and the spiral blade 15 during rotation.

[0026] A support frame 31 is provided above the feeding end of the conveying circular pipe 1, and a sludge screen frame 37 is provided above the support frame 31. A fixing frame 35 is fixedly installed on both sides of each sludge screen frame 37, and a second spring 36 is fixedly installed between each fixing frame 35 and the top of the support frame 31. An inclined rod 32 is fixedly installed on the top of the support frame 31. The sludge screen frame 37 is sloped as a whole, and the slope is lower on the side close to the feeding end of the conveying circular pipe 1. Vibration components 34 are fixedly installed on both sides of the sludge screen frame 37, and the cam of the vibration component 34 cooperates with the inclined rod 32. A screen 38 is fixedly installed inside the sludge screen frame 37, and a blocking frame 39 is fixedly installed at the end of the screen 38. A discharge pipe 4 is fixedly installed at the discharge port of the screen frame 37. The lower part of the discharge pipe 4 is fixedly connected to the feed end of the conveying circular pipe 1, and the blocking frame 39 is located above the discharge pipe 4. The sludge is pumped into the sludge screen frame 37 from the waterway, and the vibration components 34 on both sides of the sludge screen frame 37 (the vibration component 34 consists of a motor and a cam) start to operate. The rotation of the cam contacts the inclined rod 32 to drive the sludge screen frame 37 itself to vibrate, and the sludge flows downward from the sludge screen frame 37. Large particles of impurities in the sludge remain on the screen 38. At the same time, the rope will contact the spoon-shaped frame 43 and the winding rod 44. The large particles of impurities are blocked and retained by the blocking frame 39, thereby improving the stability of the equipment during subsequent sludge cleaning.

[0027] Two sets of connecting frames 42 are fixedly installed on the top of the sludge screen frame 37. A rotating frame 41 is installed inside each connecting frame 42. The rotating frame 41 is rotatably connected to the internal of the connecting frame 42, and a torsion spring is provided at the connection point at both ends. A spoon-shaped frame 43 is fixedly installed on the surface of each rotating frame 41. A winding rod 44 is fixedly installed on the side wall of each spoon-shaped frame 43. A fixing rod 45 is fixedly installed on the surface of the rotating frame 41 between each two spoon-shaped frames 43. A second motor 46 is fixedly installed at the end of each fixing rod 45. Each second motor 46 At least two cutting blades 47 are fixedly mounted on the surface of the output shaft. When in use, part of the rope in the sludge will be intercepted by the spoon-shaped frame 43 and the winding rod 44. The second motor 46 at the end of the fixed rod 45 is started, and the second motor 46 drives the three cutting blades 47 to rotate. The cutting blades 47 cut the rope into segments, reducing the impact of subsequent ropes on the spiral blades 15. The two ends of the rotating frame 41 are rotatable in the connecting frame 42. Therefore, when large particles roll down, they will drive the rotating frame 41 to rotate upward, so that they can smoothly fall into the blocking frame 39.

[0028] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A sewage sludge removal device for water conservancy projects, comprising a conveying circular pipe (1), a driving shaft (14) being rotatably mounted inside the conveying circular pipe (1), a first motor (13) being fixedly mounted at the end of the conveying circular pipe (1), and an output end of the first motor (13) being fixedly connected to the driving shaft (14), characterized in that: The surface of the driving shaft (14) is fixedly mounted with a spiral blade (15), the interior of the conveying circular tube (1) is rotatably mounted with a sleeve (19), and a drainage gap (18) is spaced between the sleeve (19) and the conveying circular tube (1), the inner wall of the sleeve (19) is fixedly mounted with a guide rib (2), the drainage gap (18) is sleeved outside the spiral blade (15), the inner wall of the conveying circular tube (1) is fixedly mounted with three groups of supporting rods (49), and the surface of the supporting rods (49) is rotatably mounted with at least two A multi-stage boss (22) is provided, and at least two scrapers (28) are fixedly mounted on the side wall of each multi-stage boss (22), and the side wall of each scraper (28) is in contact with the inner wall of the spiral blade (15). A support frame (31) is provided above the feeding end of the conveying circular tube (1), and a sludge screen frame (37) is provided above the support frame (31). A discharge pipe (4) is fixedly mounted on the discharge port of the sludge screen frame (37), and the lower part of the discharge pipe (4) is fixedly connected to the feeding end of the conveying circular tube (1).

2. The sewage sludge removal equipment for water conservancy projects according to claim 1, characterized in that: A conical discharge pipe (16) is fixedly mounted on the discharge end of the conveying circular tube (1), and two discharge plates (17) are provided at the end of the conical discharge pipe (16). The two discharge plates (17) are fixedly connected to the end of the conical discharge pipe (16) and the end of the driving shaft (14), respectively, and a discharge trough (21) is formed between the two discharge plates (17).

3. The sewage sludge removal equipment for water conservancy projects according to claim 1, characterized in that: A filter frame (12) is fixedly mounted on the end of the conveying circular pipe (1) near the first motor (13), a first filter is provided on the side wall of the filter frame (12), and the first filter is adapted to the position of the drainage gap (18), and a second filter is provided on the lower side wall of the conveying circular pipe (1).

4. The sewage sludge removal equipment for water conservancy projects according to claim 1, characterized in that: The side walls of each multi-stage boss (22) are provided with a convex rod (23), the surface of each supporting round rod (49) is fixedly sleeved with a concave frame (48), each convex rod (23) is located in the concave frame (48), and a first spring (24) is fixedly installed between the two side walls of the convex rod (23) and the inner wall of the concave frame (48).

5. The sewage sludge removal equipment for water conservancy projects according to claim 4, characterized in that: The multi-stage boss (22) forms an extrusion surface that is "steep in front and gentle in the back" from front to back, and at least two semi-ring cams (25) are fixedly mounted on the upper and lower surfaces of each multi-stage boss (22), and the arc-shaped outer surface of the semi-ring cam (25) is slidably fitted with the inner wall of the sleeve (19), and the volume of the semi-ring cam (25) on each multi-stage boss (22) gradually increases from front to back.

6. The sewage sludge removal equipment for water conservancy projects according to claim 5, characterized in that: Two limiting plates (26) are fixedly mounted on the side walls of the multi-stage boss (22), each scraper (28) is located between the two limiting plates (26), a rubber connecting piece (27) is fixedly mounted between each scraper (28) and the side wall of the multi-stage boss (22), each scraper (28) is provided with a convex scraper (29) near the front side, and a hollow groove (3) is provided in the middle of each scraper (28).

7. The sewage sludge removal equipment for water conservancy projects according to claim 1, characterized in that: A fixing frame (35) is fixedly installed on both sides of each sludge screen frame (37), a second spring (36) is fixedly installed between each fixing frame (35) and the top of the support frame (31), and an inclined rod (32) is fixedly installed on the top of the support frame (31). The sludge screen frame (37) is generally sloped, and the slope is lower on the side close to the feed end of the conveying circular pipe (1).

8. The sewage sludge removal equipment for water conservancy projects according to claim 7, characterized in that: Vibration assemblies (34) are fixedly mounted on both sides of the sludge screen frame (37), and the cam of the vibration assembly (34) cooperates with the inclined rod (32). A screen (38) is fixedly mounted inside the sludge screen frame (37), and a blocking frame (39) is fixedly mounted at the end of the screen (38), and the blocking frame (39) is located above the discharge pipe (4).

9. The sewage sludge removal equipment for water conservancy projects according to claim 7, characterized in that: Two groups of connecting frames (42) are fixedly mounted on the top of the sludge screen frame (37), a rotating frame (41) is mounted inside each connecting frame (42), a spoon-shaped frame (43) is fixedly mounted on the surface of each rotating frame (41), and a winding rod (44) is fixedly mounted on the side wall of each spoon-shaped frame (43).

10. The sewage sludge removal equipment for water conservancy projects according to claim 9, characterized in that: A fixing rod (45) is fixedly mounted on the surface of the rotating frame (41) between each two spoon-shaped frames (43), a second motor (46) is fixedly mounted on the end of each fixing rod (45), and at least two cutting blades (47) are fixedly mounted on the output shaft surface of each second motor (46).

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