A sewage sludge separation device for sewers

Abstract

This invention discloses a sewage sludge separation device for sewers. A top cover is connected to the top of the outer shell, and a raw material inlet pipe is connected to the top cover. A centrifuge tank is rotatably connected to the outer shell and the top cover, and the centrifuge tank has a seepage hole a. The sludge scraping mechanism includes an inner tank connected to the top cover, and a spiral shaft A rotatably connected to the centrifuge tank, extending into the interior of the inner tank. The inner tank has a sandwich structure, and a suction pipe is connected inside the inner tank, extending to the outside of the centrifuge mechanism. The sludge scraping mechanism is rotatably connected to the inner tank, and a scraper plate is connected to the scraper. One end of a transmission pipe is connected to a discharge pipe, and the other end is connected to a secondary extrusion mechanism. A drive mechanism is driven and connected to the centrifuge tank, the spiral shaft A, and the transmission mechanism, and the other end of the transmission mechanism is driven and connected to the sludge scraping mechanism. This invention utilizes centrifugation and two-stage extrusion in combination to reduce the sludge moisture content, improve separation efficiency, reduce energy consumption, reduce operating costs, simplify operation, and improve equipment stability.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a sewage sludge separation device for sewers. Background Technology

[0002] Currently, sewage sludge from sewer cleaning is simply landfilled in the suburbs. This long-term, haphazard landfilling has caused environmental pollution. With the continuous development of urban road construction, the environmental and public health problems caused by sludge should be given high priority by government departments and are urgent issues that need to be addressed in ecological construction. The disorderly landfilling and treatment of sewer sludge, along with sewage infiltration, hinders sanitation management, creates a breeding ground for viruses, and also poses challenges to disease prevention and control. This is detrimental to the physical and mental health of residents living near landfill sites. To protect the ecological environment and the health of the people, it is essential to dry urban sewer sludge for centralized management and treatment, minimizing its harmful effects. Therefore, drying sewer sludge is necessary to facilitate its collection.

[0003] Currently, most sludge treatment equipment either separates sludge through centrifugation or by adding flocculants and then extruding it. Extrusion results in too high a moisture content, making bagging impossible. Adding flocculants before extrusion may improve the effect, but the composition and quality of the flocculants are difficult to control. Centrifugation requires meeting the moisture content and speed requirements, resulting in a large equipment size that cannot be loaded onto vehicles. Traditional sludge treatment methods, such as sedimentation, filtration, and biological treatment, have limitations, including low treatment efficiency, high energy consumption, and high equipment maintenance costs. They may also cause secondary pollution to the environment.

[0004] Therefore, there is an urgent need in the market for a sewage sludge separation device. Summary of the Invention

[0005] The purpose of this invention is to provide a sewage sludge separation equipment for sewers, which utilizes a combination of centrifugation and two-stage extrusion to reduce the sludge moisture content, improve separation efficiency, reduce energy consumption, lower operating costs, simplify operation, and improve equipment stability, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A sewage sludge separation device for sewers includes a centrifugal mechanism, a compression and conveying mechanism, a sludge scraping mechanism, a conveying pipe, a secondary compression mechanism, a drive mechanism, and a transmission mechanism. The centrifugal mechanism includes an outer shell with a top cover connected to its top. A raw material inlet pipe is connected to the top cover. A centrifugal drum is rotatably connected to the outer shell and the top cover. The centrifugal drum has a seepage hole a, and a water outlet pipe is connected to the outer shell. The sludge scraping mechanism includes an inner drum connected to the top cover. A spiral shaft A is rotatably connected to the centrifugal drum and extends into the interior of the inner drum. A discharge pipe is connected to the top of the inner drum. The inner drum has a sandwich structure, and a suction pipe is connected inside the inner drum, extending to the outside of the centrifugal mechanism. The sludge scraping mechanism is rotatably connected to the inner drum, and a scraper plate is connected to the scraper plate, which contacts the inner wall of the centrifugal drum. One end of the conveying pipe is connected to the discharge pipe, and the other end is connected to the secondary compression mechanism. The drive mechanism is driven and connected to the centrifugal drum, the spiral shaft A, and the transmission mechanism. The other end of the transmission mechanism is driven and connected to the sludge scraping mechanism.

[0008] A further improvement of the present invention is that the outer shell of the centrifuge mechanism is connected to the housing, and the bottom end of the centrifuge barrel is rotatably connected to the bottom end of the outer shell through a bearing; the inner side of the top cover is provided with a groove, and two needle roller bearings are connected to the side wall of the groove, and the top end of the centrifuge barrel is rotatably connected between the two needle roller bearings; the inner end of the raw material inlet pipe is located above the inner side of the centrifuge barrel, and the water outlet pipe is connected to the bottom end of the outer shell.

[0009] A further improvement of the present invention is that the drive mechanism is located inside the housing, and the drive mechanism includes a motor a, a gear a, a gear b and a gear c; a base plate is connected to the bottom end of the housing, the motor a is connected to the base plate, the gear b is connected to the power output shaft of the motor a, a one-way bearing a is connected to the bottom end of the centrifuge barrel, the gear c is connected to the one-way bearing a, and the gear a meshes with the gear b.

[0010] A further improvement of the present invention is that the spiral shaft A is rotatably connected to the centrifuge barrel via a one-way bearing b, gear a is connected to the bottom end of the spiral shaft A, and gear c meshes with gear b; the inner wall of the inner barrel interlayer is provided with a water seepage hole b, and a receiving cavity is formed between the bottom of the inner wall of the inner barrel (where no hole is opened) and the bottom of the outer wall; one end of the water suction pipe extends to the bottom of the receiving cavity, and the other end extends through the top cover to the outside; several arc-shaped notches are arranged in a ring at one end of the inner barrel.

[0011] A further improvement of the present invention is that the sludge scraping mechanism further includes a support plate, which is rotatably connected to the top of the inner barrel via a bearing; sludge scrapers are symmetrically connected to the support plate, and the shape of the sludge scrapers is consistent with the inner contour shape of the centrifuge barrel.

[0012] A further improvement of the present invention is that the transmission mechanism includes a first transmission shaft, a second transmission shaft, a third transmission shaft, a first bushing, and a second bushing; a first transmission box communicating with the housing is connected to the side of the housing, the first bushing is connected to the top of the first transmission box, and the first transmission shaft is rotatably connected to the first bushing via a bearing; a driving pulley is connected to the bottom of the centrifuge barrel, a driven pulley is connected to the bottom of the first transmission shaft, the driven pulley is housed in the first transmission box, and a synchronous belt drive is connected between the driving pulley and the driven pulley; a second transmission box is connected to the top of the first bushing, the second bushing is connected to one side of the second transmission box, and the second transmission shaft is rotatably connected to the second bushing via a bearing; a first bevel gear is connected to the top of the first transmission shaft, a second bevel gear is connected to one end of the second transmission shaft, the first bevel gear meshes with the second bevel gear, and the first bevel gear and the second bevel gear are housed in the second transmission box.

[0013] A further improvement of the present invention is that a third transmission box is connected to the top of the top cover, and one end of the second bushing is connected to the third transmission box; the third transmission shaft is a hollow shaft, which is rotatably connected to the top cover through a bearing, and is also connected to the top of the support plate; one end of the second transmission shaft is connected to a third bevel gear, and the top of the third transmission shaft is connected to a fourth bevel gear, which meshes with the fourth bevel gear, and the third and fourth bevel gears are housed in the third transmission box, with the discharge pipe passing through the third transmission shaft and the third gear box.

[0014] A further improvement of the present invention is that the secondary extrusion mechanism includes a chamber, a motor b, and a screw shaft B; the chamber is connected to a base, and the two ends of the chamber are provided with an inlet and an outlet, the inlet being connected to a transmission pipe, and the outlet being connected to a door panel; a support is connected to the base, the motor b is connected to the support, the screw shaft B is rotatably connected to one end of the chamber and extends into the inner side of the chamber, and the screw shaft B is connected to the power output shaft of the motor b through a coupling; the chamber at the outlet end is a sandwich mechanism, the inner wall of the sandwich is provided with a water seepage hole c, the bottom end of the sandwich is connected to a water guide pipe, and one end of the water guide pipe extends to the outside of the chamber.

[0015] A further improvement of the present invention is that a door frame is connected to the discharge port, a bracket is connected to the top of the discharge port, a cylinder is connected to the bracket, the door panel is slidably fitted to the door frame, and the cylinder drives the door panel to rise to expose the discharge port or drives the door panel to fall to block the discharge port.

[0016] A further improvement of the present invention is that the bottom end of the door panel is cut out.

[0017] The beneficial effects of this invention are:

[0018] The sewage sludge separation equipment of the present invention utilizes a combination of centrifugation and two-stage extrusion to reduce the sludge moisture content, improve separation efficiency, reduce energy consumption, lower operating costs, simplify operation, and enhance equipment stability.

[0019] The sewage sludge separation equipment of the present invention uses a coaxial, different-speed technique to achieve the rotation of the centrifuge tank and the scraper. The spiral shaft A and the centrifuge tank adopt a one-way bearing technology, so that when the motor a rotates forward, the centrifuge tank rotates while the spiral shaft A does not rotate; when the motor rotates in reverse, the spiral shaft A rotates while the centrifuge tank does not rotate. Thus, one motor a can control the rotation of multiple devices, and the centrifuge tank and the scraper can rotate simultaneously at different speeds, thus meeting the working requirement that the spiral shaft A and the centrifuge tank do not rotate at the same time.

[0020] The sewage sludge separation equipment of the present invention has two scraper blades inside the centrifuge tank. The scraper blades are tangent to the inner wall of the centrifuge tank. Rotating the scraper blades will scrape off the sludge on the inner wall of the centrifuge tank, preventing the sludge from clogging the water seepage holes a on the inner wall of the centrifuge tank and affecting the centrifugation efficiency.

[0021] The sewage sludge separation equipment of the present invention uses a shared motor a for the centrifugal mechanism, the extrusion and conveying mechanism, and the sludge scraping mechanism, thereby saving manufacturing and usage costs.

[0022] The sewage sludge separation equipment of the present invention has a slit at the bottom of the door panel, which can cut off the sludge remaining in the door frame when the door is closed, and the door panel has better sealing performance when closed. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0025] Figure 3 This is a schematic diagram of the centrifuge tank structure of the present invention.

[0026] Figure 4 This is a schematic diagram of the top cover structure of the present invention.

[0027] Figure 5 This is a schematic diagram of the sludge scraping mechanism of the present invention.

[0028] Figure 6 This is a cross-sectional view of the extrusion transmission mechanism of the present invention.

[0029] Figure 7 This is a schematic diagram of the secondary extrusion mechanism of the present invention.

[0030] Figure 8 This is a cross-sectional view of the secondary extrusion mechanism of the present invention.

[0031] In the diagram: 1-Centrifugal mechanism, 101-Outer shell, 102-Top cover, 103-Raw material inlet pipe, 104-Drain hole a, 105-Outlet pipe, 106-Shell base, 107-Mold, 108-Needle roller bearing, 109-One-way bearing a, 110-Centrifugal tank, 2-Extrusion and transfer mechanism, 201-Inner tank, 202-Screw shaft A, 203-Discharge pipe, 204-Suction pipe, 205-One-way bearing b, 206-Drain hole b, 207-Accommodation cavity, 208-Notch, 3-Sludge scraping mechanism, 301-Support plate, 302-Sludge scraper, 4-Transfer pipe, 5-Secondary extrusion mechanism, 501-Chamber, 502-Motor b, 503-Screw shaft B, 504-Base, 505-Feed inlet, 506 -Discharge port, 507-Door panel, 508-Support, 509-Drainage hole c, 510-Water guide pipe, 511-Door frame, 512-Bracket, 513-Cylinder, 6-Drive mechanism, 601-Motor a, 602-Gear a, 603-Gear b, 604-Gear c, 605-Drive pulley, 606-Driven pulley, 607-Synchronous belt, 7-Transmission mechanism, 701-First transmission shaft, 702-Second transmission shaft, 703-Third transmission shaft, 704-First bushing, 705-Second bushing, 706-First transmission box, 707-Second transmission box, 708-Third transmission box, 709-First bevel gear, 710-Second bevel gear, 711-Third bevel gear, 712-Fourth bevel gear. Detailed Implementation

[0032] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1: As Figures 1-8As shown, a sewage sludge separation device includes a centrifugal mechanism 1, a compression and conveying mechanism 2, a sludge scraping mechanism 3, a conveying pipe 4, a secondary compression mechanism 5, a drive mechanism 6, and a transmission mechanism 7. The centrifugal mechanism 1 includes a shell 101, a top cover 102 connected to the top of the shell 101, a raw material inlet pipe 103 connected to the top cover 102, a centrifugal drum 110 rotatably connected to the shell 101 and the top cover 102, a seepage hole a104 provided on the centrifugal drum 110, and a water outlet pipe 105 connected to the shell 101. The sludge scraping mechanism 3 includes an inner drum 201 connected to the top cover 102, and a spiral shaft A202 rotatably connected to the centrifugal drum 110. The spiral shaft A202 extends into the interior of the inner barrel 201, and the top of the inner barrel 201 is connected to the discharge pipe 203. The inner barrel 201 has a sandwich structure, and a water suction pipe 204 is connected inside the inner barrel 201, extending to the outside of the centrifugal mechanism 1. The sludge scraping mechanism 3 is rotatably connected to the inner barrel 201, and a sludge scraper 302 is connected to the sludge scraping mechanism 3, which contacts the inner wall of the centrifugal barrel 110. One end of the transmission pipe 4 is connected to the discharge pipe 203, and the other end is connected to the secondary extrusion mechanism 5. The drive mechanism 6 is driven and connected to the centrifugal barrel 110, the spiral shaft A202, and the transmission mechanism 7, and the other end of the transmission mechanism 7 is driven and connected to the sludge scraping mechanism 3.

[0034] The centrifuge mechanism 1 has an outer shell 101 connected to a base 106, and the bottom of the centrifuge barrel 110 is rotatably connected to the bottom of the outer shell 101 via a bearing. The top cover 102 has an inner groove 107, and two needle roller bearings 108 are connected to the side wall of the groove 107. The top of the centrifuge barrel 110 is rotatably connected between the two needle roller bearings 108. The inner end of the raw material inlet pipe 103 is located above the inner side of the centrifuge barrel 110, and the water outlet pipe 105 is connected to the bottom of the outer shell 101.

[0035] The drive mechanism 6 is located inside the housing 106. The drive mechanism 6 includes a motor a601, a gear a602, a gear b603, and a gear c604. The bottom end of the housing 101 is connected to a base plate. The motor a601 is connected to the base plate. The gear b603 is connected to the power output shaft of the motor a601. The bottom end of the centrifuge tank 110 is connected to a one-way bearing a109. The gear c604 is connected to the one-way bearing a109, and the gear a602 meshes with the gear b603.

[0036] Among them, the spiral shaft A202 is rotatably connected to the centrifuge barrel 110 through the one-way bearing b205, the gear a602 is connected to the bottom end of the spiral shaft A202, and the gear c604 meshes with the gear b603; the inner wall of the inner barrel 201 is provided with a water seepage hole b206, and the bottom of the inner wall of the inner barrel 201 without openings forms a receiving cavity 207 between the bottom of the inner wall and the bottom of the outer wall, one end of the water suction pipe 204 extends to the bottom of the receiving cavity 207, and the other end extends to the outside through the top cover 102; several arc-shaped notches 208 are arranged in a ring at one end of the inner barrel 201.

[0037] The sludge scraping mechanism 3 also includes a support plate 301, which is rotatably connected to the top of the inner barrel 201 via a bearing; the sludge scraper 302 is symmetrically connected to the support plate 301, and the shape of the sludge scraper 302 is consistent with the inner contour shape of the centrifuge barrel 110.

[0038] The transmission mechanism 7 includes a first transmission shaft 701, a second transmission shaft 702, a third transmission shaft 703, a first bushing 704, and a second bushing 705. A first transmission box 706 communicating with the housing 106 is connected to the side of the housing 106. The first bushing 704 is connected to the top of the first transmission box 706, and the first transmission shaft 701 is rotatably connected to the first bushing 704 via bearings. A drive pulley 605 is connected to the bottom of the centrifuge tank 110, and a driven pulley 606 is connected to the bottom of the first transmission shaft 701. The driven pulley 606 is housed in the first transmission box 706. The stepping belt 607 is connected between the driving pulley 605 and the driven pulley 606; the top end of the first bushing 704 is connected to the second transmission box 707, the second bushing 705 is connected to one side of the second transmission box 707, and the second transmission shaft 702 is rotatably connected to the second bushing 705 through a bearing; the top end of the first transmission shaft 701 is connected to the first bevel gear 709, one end of the second transmission shaft 702 is connected to the second bevel gear 710, the first bevel gear 709 meshes with the second bevel gear 710, and the first bevel gear 709 and the second bevel gear 710 are housed in the second transmission box 707.

[0039] The top of the top cover 102 is connected to the third transmission box 708, and one end of the second bushing 705 is connected to the third transmission box 708. The third transmission shaft 703 is a hollow shaft, which is rotatably connected to the top cover 102 through bearings, and is also connected to the top of the support plate 301. One end of the second transmission shaft 702 is connected to the third bevel gear 711, and the top of the third transmission shaft 703 is connected to the fourth bevel gear 712. The third bevel gear 711 meshes with the fourth bevel gear 712, and the third bevel gear 711 and the fourth bevel gear 712 are housed in the third transmission box 708. The discharge pipe 203 passes through the third transmission shaft 703 and the third gear box.

[0040] The secondary extrusion mechanism 5 includes a chamber 501, a motor b502, and a screw shaft B503. The chamber 501 is connected to a base 504. The chamber 501 has an inlet 505 and an outlet 506 at both ends. The inlet 505 is connected to a transmission pipe 4, and the outlet 506 is connected to a door panel 507. A support 508 is connected to the base 504. The motor b502 is connected to the support 508. The screw shaft B503 is rotatably connected to one end of the chamber 501 and extends to the inside of the chamber 501. The screw shaft B503 is connected to the power output shaft of the motor b502 through a coupling. The chamber 501 at the outlet 506 end is a sandwich mechanism. The inner wall of the sandwich is provided with a water seepage hole c509. A water guide pipe 510 is connected to the bottom of the sandwich. One end of the water guide pipe 510 extends to the outside of the chamber 501.

[0041] The discharge port 506 is connected to a door frame 511, and a bracket 512 is connected to the top of the discharge port 506, and a cylinder 513 is connected to the bracket 512. The door panel 507 is slidably fitted to the door frame 511. The cylinder 513 drives the door panel 507 to rise to expose the discharge port 506 or drives the door panel 507 to fall to block the discharge port 506.

[0042] The specific working principle of this invention is as follows:

[0043] The vacuum truck uses negative pressure to suck sludge from the sewer through the raw material inlet pipe 103 into the centrifuge tank 110. At this time, the centrifuge tank 110 contains a mud-water mixture. The rotation of motor a601 drives gear b603 to rotate. Gear c604 is meshed with gear b603, so the rotation of gear b603 drives gear c604 to rotate. Gear c604 is fitted onto one-way bearing a109, which is fitted onto the end of centrifuge tank 110. Because the bearing is one-way, one direction is locked, allowing the one-way bearing to be locked when gear a602 rotates forward. A109 is locked, thereby causing the centrifuge bucket 110 to rotate. While the centrifuge bucket 110 is rotating, it is prevented from shaking. The top of the centrifuge bucket 110 is connected to the inner groove 107 of the top cover 102. In order to reduce the friction between them, two needle roller bearings 108 are placed in the inner groove 107 of the top cover 102. The top of the centrifuge bucket 110 is placed between the two needle roller bearings 108. This can reduce the friction between the centrifuge bucket 110 and the top cover 102. When the gear C604 reverses, the one-way bearing A109 rotates freely, thereby stopping the centrifuge bucket 1101 from rotating.

[0044] When the sludge moisture content in centrifuge tank 110 reaches a certain level, motor a601 rotates in the reverse direction, and gear c604 rotates in the opposite direction, causing centrifuge tank 110 to stop rotating. Meanwhile, gear a602, meshing with gear b603, rotates. A one-way bearing b205 is fitted inside the end of centrifuge tank 110, and this one-way bearing b205 is connected to the screw shaft A202. When motor a601 rotates in the reverse direction, it drives gear a602 to rotate. Gear a602 is also connected to the screw shaft A202. When motor a601 rotates in the reverse direction, the one-way bearing b205 inside the end of centrifuge tank 110 locks, allowing the screw shaft A202 to rotate. When rotating in the forward direction, the one-way bearing b205 rotates freely. The spiral shaft A202 rotates in one direction. When the spiral shaft A202 rotates, the sludge at the bottom of the centrifuge tank 110 enters the inner tank 201 along with the spiral shaft A202. The outer diameter of the spiral shaft A202 basically coincides with the inner diameter of the inner tank 201, which can prevent the sludge from falling during upward transportation. The inner tank 201 consists of two layers, an inner wall and an outer wall, with a gap between them. The inner wall is hollow, which can squeeze the sludge during upward transportation, squeezing out the water. The water flows out along the seepage holes b206 on the inner wall and drips onto the bottom of the inner and outer walls. In order to discharge the squeezed water, a suction pipe 204 is placed at the bottom and extends out of the top cover 102. The extended end of the suction pipe 204 is connected to a water pump to drain the water from the inner tank 201. After the sludge at the bottom of the centrifuge tank 110 is squeezed by the spiral shaft A202 to remove excess water, the sludge enters the secondary squeezing mechanism 5 along the joint bend.

[0045] To prevent the drainage hole a104 of the centrifuge tank 110 from becoming clogged, two scraper blades 302 are installed inside the centrifuge tank 110. The scraper blades 302 are tangential to the inner wall of the centrifuge tank 110. Rotating the scraper blades 302 will scrape off the sludge on the inner wall of the centrifuge tank 110, preventing the sludge from clogging the drainage hole a104 of the centrifuge tank 110 and affecting the centrifugation efficiency. To enable the scraper blade 302 and the centrifuge tank 110 to move simultaneously, this invention employs coaxial transmission technology. To achieve a faster rotation speed for the centrifuge tank 110 and a slower rotation speed for the scraper blade 302, different gear ratios are used for speed reduction. The bottom of the centrifuge tank 110 transmits power to the first drive shaft 701 via a synchronous belt structure. The first drive shaft 701 then transmits power to the third drive shaft 703 via several bevel gears. The third drive shaft 703 drives the support disc 301 to rotate, which in turn drives the scraper blade 302 to rotate, thereby removing sludge from the inner wall of the centrifuge tank 110. This solves the problem of easy clogging, saves costs, and achieves different speeds on the coaxial axis by using bevel gears of different sizes.

[0046] When the sludge enters the secondary extrusion mechanism 5, the motor b502 starts to rotate. One end of the coupling is connected to the motor b502, and the other end is connected to the end of the screw shaft B503. When the motor b502 starts to rotate, it will drive the screw shaft B503 to rotate. When the sludge enters the secondary extrusion mechanism 5, the sludge will move forward with the rotation of the screw shaft B503 and enter the front end of the chamber 501 with the seepage hole c509. Because the screw shaft B503 keeps moving the sludge forward, it will cause the sludge with seepage hole c509 to be extruded. The pressure in chamber 501 increases through the seepage hole c509, causing the sludge to be squeezed, resulting in lower moisture content. The squeezed water flows through the seepage hole c509 at the front of chamber 501 into the interlayer and then flows out along the water guide pipe 510. When a certain pressure is reached, cylinder 513 contracts upward, door plate 507 moves upward, and discharge port 506 opens, allowing the squeezed sludge to flow out from the outlet. A bag is then fitted over the discharge port 506, allowing the sludge to be directly bagged. The bagged sludge has a moisture content of less than 70%, thus achieving sludge bagging.

[0047] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A sewage sludge separation device for sewers, characterized in that: It includes a centrifugal mechanism (1), an extrusion and transmission mechanism (2), a sludge scraping mechanism (3), a transmission pipeline (4), a secondary extrusion mechanism (5), a drive mechanism (6), and a transmission mechanism (7). The centrifugal mechanism (1) includes a shell (101), a top cover (102) connected to the top of the shell (101), a raw material inlet pipe (103) connected to the top cover (102), a centrifugal drum (110) rotatably connected to the shell (101) and the top cover (102), a water seepage hole a (104) provided on the centrifugal drum (110), and a water outlet pipe (105) connected to the shell (101). The sludge scraping mechanism (3) includes an inner barrel (201), which is connected to the top cover (102). The spiral shaft A (202) is rotatably connected to the centrifuge barrel (110), and the spiral shaft A (202) extends into the interior of the inner barrel (201). A discharge pipe (203) is connected to the top of the inner barrel (201). The inner barrel (201) has a sandwich structure, and a water suction pipe (204) is connected inside the inner barrel (201). The water suction pipe (204) extends to the outside of the centrifuge mechanism (1). The sludge scraping mechanism (3) is rotatably connected to the inner barrel (201), and a sludge scraper (302) is connected to the sludge scraping mechanism (3), which contacts the inner wall of the centrifuge barrel (110). One end of the transmission pipe (4) is connected to the discharge pipe (203), and the other end is connected to the secondary extrusion mechanism (5). The drive mechanism (6) is driven and connected to the centrifuge tank (110), the spiral shaft A (202) and the transmission mechanism (7), and the other end of the transmission mechanism (7) is driven and connected to the sludge scraping mechanism (3).

2. The sewage sludge separation equipment for sewers as described in claim 1, characterized in that: The outer shell (101) of the centrifugal mechanism (1) is connected to the housing (106), and the bottom end of the centrifugal barrel (110) is rotatably connected to the bottom end of the outer shell (101) through a bearing; the inner side of the top cover (102) is provided with a groove (107), and two needle roller bearings (108) are connected on the side wall of the groove (107), and the top end of the centrifugal barrel (110) is rotatably connected between the two needle roller bearings (108); the inner end of the raw material inlet pipe (103) is located above the inner side of the centrifugal barrel (110), and the water outlet pipe (105) is connected to the bottom end of the outer shell (101).

3. The sewage sludge separation equipment for sewers as described in claim 2, characterized in that: The drive mechanism (6) is located inside the housing (106). The drive mechanism (6) includes a motor a (601), a gear a (602), a gear b (603), and a gear c (604). The bottom end of the housing (101) is connected to a base plate. The motor a (601) is connected to the base plate. The gear b (603) is connected to the power output shaft of the motor a (601). The bottom end of the centrifuge tank (110) is connected to a one-way bearing a (109). The gear c (604) is connected to the one-way bearing a (109), and the gear a (602) meshes with the gear b (603).

4. The sewage sludge separation equipment for sewers as described in claim 3, characterized in that: The spiral shaft A (202) is rotatably connected to the centrifuge barrel (110) via a one-way bearing b (205). Gear a (602) is connected to the bottom end of the spiral shaft A (202), and gear c (604) meshes with gear b (603). The inner wall of the inner barrel (201) is provided with a water seepage hole b (206), and a receiving cavity (207) is formed between the bottom of the inner wall of the inner barrel (201) without opening and the bottom of the outer wall. One end of the water suction pipe (204) extends to the bottom of the receiving cavity (207), and the other end extends to the outside through the top cover (102). Several arc-shaped notches (208) are arranged in a ring at one end of the inner barrel (201).

5. The sewage sludge separation equipment for sewers as described in claim 3, characterized in that: The sludge scraping mechanism (3) also includes a support plate (301), which is rotatably connected to the top of the inner barrel (201) via a bearing; the sludge scraper (302) is symmetrically connected to the support plate (301), and the shape of the sludge scraper (302) is consistent with the inner contour shape of the centrifuge barrel (110).

6. The sewage sludge separation equipment for sewers as described in claim 5, characterized in that: The transmission mechanism (7) includes a first transmission shaft (701), a second transmission shaft (702), a third transmission shaft (703), a first bushing (704), and a second bushing (705); the side of the housing (106) is connected to a first transmission box (706) communicating with the housing (106), the first bushing (704) is connected to the top of the first transmission box (706), and the first transmission shaft (701) is rotatably connected to the first bushing (704) through a bearing; the bottom end of the centrifuge (110) is connected to a driving pulley (605), and the bottom end of the first transmission shaft (701) is connected to a driven pulley (606), which is housed in the first transmission box (706). A synchronous belt (607) is connected between the driving pulley (605) and the driven pulley (606); the top end of the first bushing (704) is connected to the second transmission box (707), the second bushing (705) is connected to one side of the second transmission box (707), and the second transmission shaft (702) is rotatably connected to the second bushing (705) through a bearing; the top end of the first transmission shaft (701) is connected to the first bevel gear (709), one end of the second transmission shaft (702) is connected to the second bevel gear (710), the first bevel gear (709) meshes with the second bevel gear (710), and the first bevel gear (709) and the second bevel gear (710) are housed in the second transmission box (707).

7. The sewage sludge separation equipment for sewers as described in claim 6, characterized in that: The top of the top cover (102) is connected to the third transmission box (708), and one end of the second bushing (705) is connected to the third transmission box (708); the third transmission shaft (703) is a hollow shaft, and the third transmission shaft (703) is rotatably connected to the top cover (102) through a bearing, and the third transmission shaft (703) is connected to the top of the support plate (301); one end of the second transmission shaft (702) is connected to the third bevel gear (711), and the top of the third transmission shaft (703) is connected to the fourth bevel gear (712), the third bevel gear (711) meshes with the fourth bevel gear (712), and the third bevel gear (711) and the fourth bevel gear (712) are housed in the third transmission box (708), and the discharge pipe (203) passes through the third transmission shaft (703) and the third gear box.

8. The sewage sludge separation equipment for sewers as described in claim 1, characterized in that: The secondary extrusion mechanism (5) includes a chamber (501), a motor b (502), and a screw shaft B (503); the chamber (501) is connected to a base (504), and the chamber (501) has an inlet (505) and an outlet (506) at both ends. The inlet (505) is connected to a transmission pipe (4), and the outlet (506) is connected to a door panel (507); a support (508) is connected to the base (504), and the motor b (502) is connected to... On the support (508), the spiral shaft B (503) is rotatably connected to one end of the chamber (501) and extends to the inside of the chamber (501). The spiral shaft B (503) is connected to the power output shaft of the motor b (502) through a coupling. The chamber (501) at the discharge port (506) end is a sandwich mechanism. The inner wall of the sandwich is provided with a water seepage hole c (509). The bottom end of the sandwich is connected to a water guide pipe (510). One end of the water guide pipe (510) extends to the outside of the chamber (501).

9. The sewage sludge separation equipment for sewers as described in claim 8, characterized in that: A door frame (511) is connected to the discharge port (506). A bracket (512) is connected to the top of the discharge port (506) via the cabin (501). A cylinder (513) is connected to the bracket (512). The door panel (507) is slidably fitted to the door frame (511). The cylinder (513) drives the door panel (507) to rise and expose the discharge port (506) or drives the door panel (507) to fall and block the discharge port (506).

10. The sewage sludge separation equipment for sewers as described in claim 9, characterized in that: The bottom of the door panel (507) is cut.

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