A sludge recycling device for wastewater treatment

Abstract

The utility model belongs to sludge recycling technical field especially, a kind of sludge recycling and reusing equipment for wastewater treatment, in view of the problem that the sludge after preliminary dewatering is easy to cake and harden in the conveying drum inner wall of drying equipment, present the following scheme, including horizontal screw centrifuge fixedly connected on ground, the bottom is fixedly connected with rotary joint I and rotary joint II by support on its both sides, the both ends of drum are rotatably connected with rotary joint I and rotary joint II, multiple auxiliary rotating mechanisms are set in the top of base for the rotation of auxiliary drum, each including fixed seat fixed in the top of base, driven gear is rotatably connected in the inboard of fixed seat, multiple knocking mechanisms are set in the top of base for knocking the surface of drum, in the utility model, through the knocking mechanism of gear linkage, high-frequency hammering vibration makes drum inner wall sludge cake and fall off loose, solve the problem that conveying passage is blocked and the dehydration rate is low due to the cake of part sludge.

Description

Technical Field

[0001] This utility model relates to the field of sludge recycling technology, and in particular to a sludge recycling and reuse device for wastewater treatment. Background Technology

[0002] In the field of wastewater treatment, the resource utilization of dewatered sludge is a key link in reducing disposal costs and achieving a circular economy. In traditional processes, sludge initially dewatered by a horizontal screw centrifuge usually needs to be transferred to a subsequent drying process for further dewatering. However, existing technologies have the following drawbacks: After initial dehydration, the sludge tends to clump and harden on the inner wall of the conveying drum of the drying equipment, forming a hardened layer. This hardened layer can block the sludge conveying channel and, like an 'insulation layer,' hinder heat transfer, making it difficult for the moisture in the sludge inside the drum to evaporate and dry, thus significantly reducing drying efficiency. Therefore, a sludge recycling and reuse device for wastewater treatment is proposed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where sludge after preliminary dewatering tends to clump and harden on the inner wall of the conveying drum in drying equipment, and to propose a sludge recycling and reuse device for wastewater treatment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A wastewater treatment sludge recycling and reuse device includes a horizontal screw centrifuge, which is fixedly connected to the ground; The base has rotating joint I and rotating joint II fixedly connected to its two sides by brackets; The roller is rotatably connected at both ends to rotary joint I and rotary joint II, respectively. Multiple auxiliary rotating mechanisms are set on the top of the base to assist the rotation of the roller. Each includes a fixed seat fixed to the top of the base, and a driven gear is rotatably connected to the inner side of the fixed seat. Multiple striking mechanisms are set on the top of the base for striking the surface of the roller. Each mechanism includes a support base, a crank, a rubber hammer, and a spring. The support base is fixed to the top of the base. The crank is rotatably connected to one side of the support base. The handle of the rubber hammer is rotatably connected to the middle of the support base. The two ends of the spring are fixedly connected to the handle of the rubber hammer and the support base through spring seats. The spring is normally compressed so that the handle abuts against the crank. The crank is fixedly connected through a connecting rod and a driven gear. The drive mechanism, located at the top of the base, is used to drive the rotation of the rollers; The material conveying mechanism is located inside the drum and is used to transport sludge.

[0005] In one possible design, the drive mechanism includes a motor fixed to the top of the base, with a drive gear fixedly connected to the output shaft of the motor. Multiple toothed rings are fixedly connected to the outer circumference of the roller. The drive gear meshes with the toothed rings located in the middle of the roller, and the multiple toothed rings mesh with corresponding driven gears.

[0006] In one possible design, there are three toothed rings, located at both ends and the middle of the roller.

[0007] In one possible design, the material conveying mechanism includes an auger fixed to the inner wall of the drum, a feed pipe connected to the drum and connected to the discharge port of the horizontal screw centrifuge on one side of the rotary joint I, and a discharge port connected to the drum and connected to the discharge port of the horizontal screw centrifuge on one side of the rotary joint II.

[0008] In one possible design, one side of rotary joint II is provided with an air intake pipe communicating with the drum, and one side of rotary joint I is provided with an exhaust pipe communicating with the drum.

[0009] In one possible design, the auxiliary rotating mechanism is symmetrically distributed on both sides of the drum.

[0010] In one possible design, the striking mechanism is set up in a one-to-one correspondence with the auxiliary rotating mechanism on the side away from the motor.

[0011] In one possible design, the feed inlet of the horizontal screw centrifuge is connected to the sludge tank via a pipe, and the discharge outlet of the horizontal screw centrifuge is connected to the wastewater treatment equipment via a pipe.

[0012] In this application: The sludge in the sludge tank is transported into the horizontal screw centrifuge through pipelines. The water separated by the horizontal screw centrifuge is transported into the sewage treatment equipment through pipelines. The sludge after preliminary dewatering in the horizontal screw centrifuge is transported into the drum through pipelines. The auger continuously pushes the sludge axially towards the discharge port through the spiral blades to form a uniform thin layer, avoiding local accumulation. Finally, the sludge is discharged from the discharge outlet. When the motor drives the gear to mesh with the central gear ring and drive the drum to rotate, the driven gear meshes synchronously with the gear rings at both ends to form a three-point support, eliminating the drum's sway. When the driven gear rotates, it drives the crank to rotate through the connecting rod, periodically releasing the rubber hammer handle that is pressed by the compressed spring, generating a high-frequency hammering force that acts on the outer wall of the drum, causing the sludge that is hardened on the inner wall to fall off. The high-frequency vibration loosens the hardened sludge blocks. Hot air is introduced into the inner cavity of the drum through the air inlet pipe, forming a countercurrent heat exchange with the sludge moving in the opposite direction. The hot air penetrates the gap of the auger and fully contacts the thin layer of sludge, and the evaporated water vapor is discharged through the exhaust pipe.

[0013] Beneficial effects: In this utility model, the sludge recycling and reuse equipment for wastewater treatment uses a combination of components such as motors, springs, rubber hammers, and rollers, and a high-frequency striking mechanism with gear linkage. The high-frequency hammering vibration causes the sludge clumps on the inner wall of the roller to fall off and loosen, which completely solves the problems of blockage in the conveying channel and low dewatering rate caused by partial sludge clumps. In this utility model, the sludge recycling and reuse equipment for wastewater treatment uses components such as springs, cranks, driven gears, and connecting rods in combination. The cranks and driven gears are linked by the connecting rods, and the pressure of the springs drives the rubber hammers to reset. High-frequency striking is completed without the need for an additional power source, saving energy. In this invention, a gear-linked striking mechanism uses high-frequency hammering vibration to loosen and dislodge the sludge clumps on the inner wall of the drum, thus solving the problems of blocked conveying channels and low dewatering rates caused by partial sludge clumps. Attached Figure Description

[0014] Figure 1 This is a first-view structural schematic diagram of a sludge recycling and reuse device for wastewater treatment proposed in this utility model. Figure 2 This is a partial cross-sectional structural diagram of a sludge recycling and reuse device for wastewater treatment proposed in this utility model; Figure 3 This utility model proposes a sludge recycling and reuse device for wastewater treatment. Figure 2 Enlarged structural diagram of point A in the middle; Figure 4 This is a second perspective structural diagram of a sludge recycling and reuse device for wastewater treatment proposed in this utility model.

[0015] In the diagram: 1. Horizontal screw centrifuge; 2. Feed pipe; 3. Exhaust pipe; 4. Rotary joint I; 5. Drum; 6. Gear ring; 7. Base; 8. Driven gear; 9. Fixed seat; 10. Motor; 11. Drive gear; 12. Screw; 13. Connecting rod; 14. Support seat; 15. Spring; 16. Rubber hammer; 17. Crankwheel; 18. Air inlet pipe; 19. Discharge port; 20. Rotary joint II. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In one implementation case, refer to Figures 1-4 A sludge recycling and reuse device includes: a horizontal screw centrifuge 1, which is fixedly connected to the ground; In this embodiment, the base 7 has rotating joint I4 and rotating joint II20 fixedly connected to its two sides by brackets; Roller 5 is rotatably connected at both ends to rotary joint I4 and rotary joint II20, respectively. In particular, multiple auxiliary rotating mechanisms are provided on the top of the base 7 to assist the rotation of the roller 5. Each includes a fixed seat 9 fixed on the top of the base 7, and a driven gear 8 is rotatably connected to the inner side of the fixed seat 9. In addition, multiple striking mechanisms are set on the top of the base 7 to strike the surface of the roller 5. Each mechanism includes a support 14, a crank 17, a rubber hammer 16, and a spring 15. The support 14 is fixed to the top of the base 7. The crank 17 is rotatably connected to one side of the support 14. The handle of the rubber hammer 16 is rotatably connected to the middle of the support 14. The two ends of the spring 15 are fixedly connected to the handle of the rubber hammer 16 and the support 14 through spring seats. The spring 15 is normally compressed so that the handle of the hammer abuts against the crank 17. The crank 17 is fixedly connected to the driven gear 8 through the connecting rod 13. The driven gear 8 drives the crank 17 to periodically release the handle of the rubber hammer 16 pressed by the compressed spring 15, generating a high-frequency hammering force that acts on the outer wall of the roller 5, causing the sludge that has hardened on the inner wall to fall off and loosen, preventing the inside of the roller 5 from becoming blocked. A drive mechanism, located on top of the base 7, is used to drive the rotation of the roller 5; The material conveying mechanism is located inside the drum 5 and is used to transport sludge.

[0018] It should be noted that the drive mechanism includes a motor 10 fixed on the top of the base 7. The output shaft of the motor 10 is fixedly connected to a drive gear 11. Multiple toothed rings 6 are fixedly connected to the outer circumference of the roller 5. The drive gear 11 meshes with the toothed rings 6 located in the middle of the roller 5. The multiple toothed rings 6 mesh with the corresponding driven gears 8.

[0019] This application can be used in the field of sludge recycling technology, or in other fields applicable to this application.

[0020] In another implementation case, refer to Figures 1-4 A wastewater treatment sludge recycling and reuse device is applied to the field of sludge recycling technology. The number of toothed rings 6 is three, located at both ends and the middle of the drum 5, respectively. The three-point support disperses the load and reduces the wear of the gears and toothed rings 6.

[0021] In this embodiment, the material conveying mechanism includes an auger 12 fixed to the inner wall of the drum 5. The auger 12 slowly pushes the sludge towards the discharge port, increasing the contact time between the sludge and the hot air and improving the dewatering rate. A feed pipe 2 connected to the drum 5 is fixedly connected to one side of the rotary joint I4. The feed pipe 2 is connected to the discharge port of the horizontal screw centrifuge 1. A discharge port 19 connected to the drum 5 is fixedly connected to one side of the rotary joint II 20.

[0022] In particular, the rotary joint II20 is provided with an air inlet pipe 18 connected to the drum 5 on one side, and the rotary joint I4 is provided with an exhaust pipe 3 connected to the drum 5 on one side. Air enters the inner cavity of the drum 5 through the air inlet pipe 18, and the evaporated water vapor is discharged through the exhaust pipe 3, forming countercurrent heat exchange with the sludge moving in the opposite direction, thereby improving the water removal rate.

[0023] In addition, the auxiliary rotating mechanism is symmetrically distributed on both sides of the drum 5. The radial oscillation of the drum is eliminated by the meshing of the driven gear 8 and the gear ring 6, thereby improving the service life of the equipment.

[0024] The striking mechanism is set up in a one-to-one correspondence with the auxiliary rotating mechanism on the side away from the motor 10.

[0025] It should be noted that the feed inlet of the horizontal screw centrifuge 1 is connected to the sludge tank through a pipe, and the drain outlet of the horizontal screw centrifuge 1 is connected to the sewage treatment equipment through a pipe. The horizontal screw centrifuge 1 performs initial dewatering of the sludge to reduce its moisture content.

[0026] However, as is well known to those skilled in the art, the working principles and wiring methods of the horizontal screw centrifuge 1 and the motor 10 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0027] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sludge recycling and reuse device for wastewater treatment, characterized in that, include: A horizontal screw centrifuge (1) is fixedly connected to the ground; The base (7) has rotating joint I (4) and rotating joint II (20) fixedly connected to its two sides by brackets. The roller (5) is rotatably connected at both ends to rotary joint I (4) and rotary joint II (20); Multiple auxiliary rotating mechanisms are set on the top of the base (7) to assist the rotation of the roller (5). Each includes a fixed seat (9) fixed on the top of the base (7), and a driven gear (8) is rotatably connected to the inner side of the fixed seat (9). Multiple striking mechanisms are set on the top of the base (7) for striking the surface of the roller (5). Each includes a support (14), a crank (17), a rubber hammer (16), and a spring (15). The support (14) is fixed on the top of the base (7). The crank (17) is rotatably connected to one side of the support (14). The handle of the rubber hammer (16) is rotatably connected to the middle of the support (14). The two ends of the spring (15) are fixedly connected to the handle of the rubber hammer (16) and the support (14) through spring seats. The spring (15) is normally compressed so that the handle abuts against the crank (17). The crank (17) is fixedly connected through a connecting rod (13) and a driven gear (8). A drive mechanism is set on top of the base (7) to drive the rotation of the roller (5); The material conveying mechanism is located inside the drum (5) for transporting sludge.

2. The sludge recycling apparatus for wastewater treatment according to claim 1, wherein The drive mechanism includes a motor (10) fixed on the top of the base (7), and a drive gear (11) is fixedly connected to the output shaft of the motor (10). Multiple toothed rings (6) are fixedly connected to the outer circumference of the roller (5). The drive gear (11) meshes with the toothed rings (6) located in the middle of the roller (5), and the multiple toothed rings (6) mesh with the corresponding driven gears (8).

3. The sludge recycling apparatus for wastewater treatment according to claim 2, wherein The number of toothed rings (6) is three, located at both ends and the middle of the roller (5).

4. The sludge recycling apparatus for wastewater treatment according to claim 1, wherein The material conveying mechanism includes an auger (12) fixed to the inner wall of the drum (5), a feed pipe (2) connected to the drum (5) on one side of the rotary joint I (4), the feed pipe (2) being connected to the discharge port of the horizontal screw centrifuge (1), and a discharge port (19) connected to the drum (5) on one side of the rotary joint II (20).

5. The sludge recycling apparatus for wastewater treatment according to claim 4, wherein The rotary joint II (20) has an air inlet pipe (18) connected to the roller (5) on one side, and the rotary joint I (4) has an exhaust pipe (3) connected to the roller (5) on one side.

6. The sludge recycling apparatus for wastewater treatment according to claim 1, wherein The auxiliary rotation mechanism is symmetrically distributed on both sides of the drum (5).

7. The sludge recycling apparatus for wastewater treatment according to claim 1, wherein The striking mechanism is set in a one-to-one correspondence with the auxiliary rotating mechanism on the side away from the motor (10).

8. The sludge recycling apparatus for wastewater treatment according to claim 1, wherein The feed inlet of the horizontal screw centrifuge (1) is connected to the sludge tank through a pipe, and the drain outlet of the horizontal screw centrifuge (1) is connected to the sewage treatment equipment through a pipe.

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