Multilayer filtration fractional precipitation sewage treatment equipment

Abstract

The utility model belongs to the technical field of sewage treatment, in particular relates to multi-layer filtration fractional precipitation sewage treatment equipment, and provides the following scheme aiming at the problems of high probability of blockage, need of frequent cleaning and maintenance and increase of operation cost and time cost due to a traditional mode of arranging a filter screen in an existing pipeline for filtration: the multi-layer filtration fractional precipitation sewage treatment equipment comprises a precipitation tank main body, the top of the sedimentation tank main body is sequentially provided with a primary sedimentation tank, a secondary sedimentation tank and a tertiary sedimentation tank from left to right. According to the utility model, the primary filtering assembly and the secondary filtering assembly are arranged, so that the multi-stage filtering and fractional sedimentation of sewage are realized, and the sewage treatment effect is effectively improved; the cleaning assembly can conduct self-cleaning on the secondary filtering assembly, the service life of the filtering assembly is effectively prolonged, the maintenance cost is reduced, rotation of the spiral rod can drive impurities in the filtering cylinder to move towards one end and then be discharged, and follow-up impurity cleaning and collecting are facilitated.

Description

A multi-layer filtration and sedimentation wastewater treatment device Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a multi-layer filtration and grading sedimentation wastewater treatment device. Background Technology

[0002] With the rapid development of industrialization and urbanization, the amount of wastewater generated is increasing day by day, and wastewater treatment has become a key link in environmental protection.

[0003] Traditional wastewater treatment equipment often uses simple screens or filters in the primary filtration stage, which are effective at removing larger floating and suspended solids, but not so effective at removing fine impurities. In the subsequent sedimentation tank, the traditional method of filtering by setting up filters in the pipes is not only prone to clogging and requires frequent cleaning and maintenance, but also increases operating and time costs. Therefore, we propose a multi-layer filtration and staged sedimentation wastewater treatment equipment to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the traditional method of filtering wastewater by setting up filters in pipelines, which is not only prone to clogging and requires frequent cleaning and maintenance, but also increases operating and time costs. Therefore, this invention proposes a multi-layer filtration and sedimentation wastewater treatment device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage filtration and sedimentation wastewater treatment device includes a sedimentation tank body. From left to right, a primary sedimentation tank, a secondary sedimentation tank, and a tertiary sedimentation tank are sequentially arranged on the top of the sedimentation tank body. Openings are provided between the primary and secondary sedimentation tanks, and between the secondary and tertiary sedimentation tanks. A filter box is fixedly mounted on the top of the primary sedimentation tank and is connected to the primary sedimentation tank. An inlet is located on the top of the filter box. A collection box is located on one side of the primary sedimentation tank. The device also includes:

[0007] The primary filtration unit is located inside the filter box and is used for primary filtration of wastewater to remove large floating and suspended solids.

[0008] Two sets of secondary filtration components are installed in the corresponding secondary sedimentation tank and tertiary sedimentation tank, respectively, to filter out smaller floating and suspended solids.

[0009] Two sets of cleaning components are installed on the corresponding secondary filter components to perform self-cleaning of the secondary filter components, thereby improving the filtration effect and extending the service life.

[0010] In one possible design, the primary filtration assembly includes two fixed plates, which are respectively fixed to the inner walls of both sides of the filter box. Both fixed plates extend through one side of the filter box and to the top of the collection box. Two rotating shafts are rotatably connected to the two fixed plates, and the same mesh conveyor belt is drivenly connected to the two rotating shafts. The mesh conveyor belt is provided with multiple baffles. A first motor is fixed to one side of the filter box, and the output end of the first motor is fixedly connected to one of the rotating shafts. An S-shaped partition is fixed to the inner wall of one side of the filter box, and both fixed plates extend into the interior of the S-shaped partition.

[0011] In one possible design, the secondary filtration assembly includes a first fixed cylinder and a second fixed cylinder, which are respectively fixedly disposed on both sides of the secondary sedimentation tank. The end of the first fixed cylinder away from the second fixed cylinder is sealed, and the ends of the first and second fixed cylinders close to each other are connected to the same filter cylinder. A screw rod is rotatably connected to the sealed end of the first fixed cylinder. The screw rod passes through the filter cylinder and extends into the interior of the second fixed cylinder. An inlet pipe is fixedly connected to one side of the first fixed cylinder, and the inlet pipe is connected to a corresponding port. A drive assembly for driving the screw rod to rotate is provided on one side of the secondary sedimentation tank.

[0012] In one possible design, the drive assembly includes a dual-output-shaft gearbox fixedly mounted on one side of the secondary sedimentation tank, with the two output ends of the dual-output-shaft gearbox rotating in opposite directions. One output end of the dual-output-shaft gearbox is fixedly connected to a screw rod, and a second motor is fixedly mounted on one side of the dual-output-shaft gearbox, with the output end of the second motor fixedly connected to the input end of the dual-output-shaft gearbox.

[0013] In one possible design, the cleaning assembly includes two mounting plates, which are respectively fixed to the top of a first fixed cylinder and a second fixed cylinder. A high-pressure water pipe is fixedly connected between the two mounting plates, and multiple high-pressure nozzles are fixedly connected to the bottom of the high-pressure water pipe. The high-pressure water pipe is connected to an external high-pressure water source.

[0014] In one possible design, a first rotating ring and a second rotating ring are rotatably connected to the ends of the first fixed cylinder and the second fixed cylinder respectively, and the first rotating ring and the second rotating ring are respectively inside the first fixed cylinder and the second fixed cylinder. The two ends of the filter cylinder are fixedly connected to the first rotating ring and the second rotating ring respectively. A driven gear is fixedly sleeved on the outer wall of the first rotating ring. A transmission rod is rotatably connected through the two mounting plates. A driving gear is fixedly sleeved on the transmission rod. The driving gear meshes with the driven gear. One end of the transmission rod is fixedly connected to the other output end of the dual output shaft gearbox.

[0015] In this application, firstly, the first motor is started, and the output end of the first motor drives one of the rotating shafts to rotate. Through the transmission connection, the two rotating shafts rotate synchronously, thereby driving the mesh belt conveyor belt to operate. Wastewater enters the filter box through the inlet at the top of the filter box. Large floating and suspended objects inside are intercepted by the baffles on the mesh belt conveyor belt. As the mesh belt conveyor belt operates, these impurities are transported to the top of the collection box and then fall into the collection box, thus achieving primary filtration.

[0016] When wastewater enters the secondary sedimentation tank, it first passes through the secondary filtration components. Specifically, the wastewater enters the first fixed cylinder through the inlet pipe. At this time, the second motor works, driving the dual-output shaft gearbox to rotate, which in turn rotates the screw rod fixedly connected to one of the output shafts of the dual-output shaft gearbox. Driven by the screw rod, the wastewater flows from the first fixed cylinder through the filter cylinder to the second fixed cylinder. During this process, smaller floating and suspended solids are intercepted by the filter cylinder. The filtered wastewater enters the secondary sedimentation tank for sedimentation. At the same time, the rotation of the screw rod will drive the impurities in the filter cylinder to one end and discharge them from the second fixed cylinder.

[0017] To keep the secondary filtration components clean, the high-pressure water pipe and high-pressure nozzle of the cleaning components continuously spray high-pressure water into the filter cartridge to wash away the impurities attached to the filter cartridge. The high-pressure water source is connected to the high-pressure water pipe through an external pipe to ensure the continuous operation of the cleaning components.

[0018] In addition, the transmission rod fixedly connected to the other output end of the dual-output-shaft gearbox rotates simultaneously with the operation of the dual-output-shaft gearbox. The rotation of the transmission rod, through the meshing of the driving gear and the driven gear, drives the first rotating ring, the second rotating ring, and the filter cartridge to rotate slowly, allowing the high-pressure nozzle to thoroughly rinse the filter cartridge and improve the cleaning effect.

[0019] Beneficial effects: The multi-layer filtration and sedimentation wastewater treatment equipment of this utility model achieves multi-stage filtration and sedimentation of wastewater by setting primary filtration components and secondary filtration components, which effectively improves the wastewater treatment effect.

[0020] In this utility model, the multi-layer filtration and sedimentation sewage treatment equipment adopts a high-pressure water pipe and high-pressure nozzle design for the cleaning component, which can self-clean the secondary filtration component, effectively extending the service life of the filtration component and reducing maintenance costs.

[0021] In this utility model, the multi-layer filtration and sedimentation wastewater treatment equipment uses the rotation of the spiral rod in the secondary filtration component to drive the impurities in the filter cylinder to one end and discharge them, which facilitates the subsequent cleaning and collection of impurities.

[0022] In this invention, by setting up a primary filtration component and a secondary filtration component, multi-stage filtration and graded sedimentation of sewage are achieved, which effectively improves the sewage treatment effect. The cleaning component can self-clean the secondary filtration component, effectively extending the service life of the filtration component and reducing maintenance costs. The rotation of the screw rod can drive the impurities in the filter cylinder to one end and discharge them, which facilitates the subsequent cleaning and collection of impurities. Attached Figure Description

[0023] Figure 1 is a three-dimensional structural schematic diagram of a multi-layer filtration and grading sedimentation wastewater treatment device proposed in this utility model;

[0024] Figure 2 is a three-dimensional cross-sectional structural diagram of the filter box of a multi-layer filtration and sedimentation wastewater treatment device proposed in this utility model.

[0025] Figure 3 is a three-dimensional structural schematic diagram of a multi-layer filtration and grading sedimentation wastewater treatment device proposed in this utility model from another perspective.

[0026] Figure 4 is a three-dimensional structural diagram of the secondary filtration component of a multi-layer filtration and sedimentation wastewater treatment device proposed in this utility model.

[0027] Figure 5 is a partial exploded three-dimensional structural diagram of the secondary filtration component of a multi-layer filtration and sedimentation wastewater treatment device proposed in this utility model.

[0028] In the diagram: 1. Sedimentation tank body; 101. Primary sedimentation tank; 102. Secondary sedimentation tank; 103. Tertiary sedimentation tank; 2. Filter box; 3. Collection box; 4. Fixing plate; 5. Rotating shaft; 6. Mesh conveyor belt; 7. Baffle; 8. First motor; 9. S-shaped partition; 10. First fixed cylinder; 11. Second fixed cylinder; 12. Screw rod; 13. First rotating ring; 14. Second rotating ring; 15. Filter cylinder; 16. Dual output shaft gearbox; 17. Second motor; 18. Mounting plate; 19. Transmission rod; 20. Drive gear; 21. Driven gear; 22. High-pressure water pipe. Detailed Implementation

[0029] 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.

[0030] Example 1: Referring to Figures 1-5, a wastewater treatment device includes a sedimentation tank body 1. From left to right, a primary sedimentation tank 101, a secondary sedimentation tank 102, and a tertiary sedimentation tank 103 are sequentially formed on the top of the sedimentation tank body 1. Openings are provided between the primary sedimentation tank 101 and the secondary sedimentation tank 102, and between the secondary sedimentation tank 102 and the tertiary sedimentation tank 103, to allow for the gradual flow of wastewater through each stage.

[0031] A filter box 2 is fixedly installed on the top of the primary sedimentation tank 101, and the filter box 2 is connected to the primary sedimentation tank 101. An inlet is provided on the top of the filter box 2 to receive wastewater to be treated. A collection box 3 is provided on one side of the primary sedimentation tank 101 to collect filtered impurities.

[0032] The equipment also includes a primary filtration assembly, two sets of secondary filtration assemblies, and two sets of cleaning assemblies. The primary filtration assembly, located inside filter tank 2, performs initial filtration of wastewater, removing large floating and suspended solids. The two sets of secondary filtration assemblies are located in secondary sedimentation tank 102 and tertiary sedimentation tank 103, respectively, for further filtration of smaller floating and suspended solids. The two sets of cleaning assemblies are located on their respective secondary filtration assemblies and are used for self-cleaning, thereby improving filtration efficiency and extending service life.

[0033] The primary filtration assembly includes two fixed plates 4, which are respectively fixed to the inner walls of both sides of the filter box 2 and extend through one side of the filter box 2 to the top of the collection box 3. Two rotating shafts 5 are rotatably connected to the two fixed plates 4, and a single mesh conveyor belt 6 is drivenly connected to the two rotating shafts 5. The mesh conveyor belt 6 is equipped with multiple baffles 7 for intercepting and transporting impurities. A first motor 8 is fixedly installed on one side of the filter box 2, and the output end of the first motor 8 is fixedly connected to one of the rotating shafts 5 to drive the mesh conveyor belt 6 to rotate. An S-shaped baffle 9 is fixedly installed on the inner wall of one side of the filter box 2, and both fixed plates 4 extend into the interior of the S-shaped baffle 9. The design of the S-shaped baffle 9 helps to better guide the flow of wastewater and collect impurities.

[0034] The secondary filtration assembly includes a first fixed cylinder 10 and a second fixed cylinder 11, which are respectively fixedly installed on both sides of the secondary sedimentation tank 102. The end of the first fixed cylinder 10 away from the second fixed cylinder 11 is sealed, and the ends of the first fixed cylinder 10 and the second fixed cylinder 11 close to each other are connected to the same filter cylinder 15. A screw rod 12 is rotatably connected to the sealed end of the first fixed cylinder 10. The screw rod 12 passes through the filter cylinder 15 and extends into the interior of the second fixed cylinder 11, and is used to push the sewage through the filter cylinder 15 for filtration. An inlet pipe is fixedly connected to one side of the first fixed cylinder 10, and the inlet pipe is connected to a corresponding port to receive sewage from the previous sedimentation tank.

[0035] A drive assembly for rotating the screw rod 12 is provided on one side of the secondary sedimentation tank 102. The drive assembly includes a dual-output shaft gearbox 16 and a second motor 17. The dual-output shaft gearbox 16 is fixedly mounted on one side of the secondary sedimentation tank 102, and its two output ends rotate in opposite directions. One output end of the dual-output shaft gearbox 16 is fixedly connected to the screw rod 12 to drive the screw rod 12 to rotate. The second motor 17 is fixedly mounted on one side of the dual-output shaft gearbox 16, and the output end of the second motor 17 is fixedly connected to the input end of the dual-output shaft gearbox 16 to provide power.

[0036] The cleaning assembly includes two mounting plates 18, which are respectively fixed to the top of the first fixed cylinder 10 and the second fixed cylinder 11. A single high-pressure water pipe 22 is fixedly connected between the two mounting plates 18. Multiple high-pressure nozzles are fixedly connected to the bottom of the high-pressure water pipe 22 for spraying high-pressure water to clean the filter cylinder 15. The high-pressure water pipe 22 is connected to an external high-pressure water source to provide the necessary high-pressure water flow for cleaning.

[0037] This application can be used in the field of wastewater treatment technology, or in other fields applicable to this application.

[0038] Example 2: Referring to Figures 4-5, an improvement upon Example 1 is provided: a multi-layer filtration and sedimentation wastewater treatment device, applied in the field of wastewater treatment technology. A first rotating ring 13 and a second rotating ring 14 are rotatably connected to the ends of a first fixed cylinder 10 and a second fixed cylinder 11, respectively, and the first rotating ring 13 and the second rotating ring 14 are located inside the first fixed cylinder 10 and the second fixed cylinder 11, respectively. Both ends of a filter cylinder 15 are fixedly connected to the first rotating ring 13 and the second rotating ring 14, respectively, to achieve rotation of the filter cylinder 15. A driven gear 21 is fixedly sleeved on the outer wall of the first rotating ring 13. A transmission rod 19 is rotatably connected through two mounting plates 18, and a driving gear 20 is fixedly sleeved on the transmission rod 19. The driving gear 20 meshes with the driven gear 21, and one end of the transmission rod 19 is fixedly connected to the other output end of a dual-output shaft gearbox 16. When the dual-output shaft gearbox 16 rotates, the transmission rod 19, the driving gear 20, and the driven gear 21 can drive the filter cylinder 15 to rotate, thereby assisting the cleaning process.

[0039] However, as is well known to those skilled in the art, the working principles and wiring methods of the first motor 8 and the second motor 17 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0040] 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 multi-stage filtration and sedimentation wastewater treatment device, comprising a sedimentation tank body (1), wherein a primary sedimentation tank (101), a secondary sedimentation tank (102), and a tertiary sedimentation tank (103) are sequentially provided on the top of the sedimentation tank body (1) from left to right; an opening is provided between the primary sedimentation tank (101) and the secondary sedimentation tank (102), and between the secondary sedimentation tank (102) and the tertiary sedimentation tank (103); a filter box (2) is fixedly provided on the top of the primary sedimentation tank (101), the filter box (2) is connected to the primary sedimentation tank (101), and a sludge inlet is provided on the top of the filter box (2); a collection box (3) is provided on one side of the primary sedimentation tank (101), characterized in that, The equipment also includes: a primary filtration assembly, which is located inside the filter box (2) and is used to filter large floating and suspended solids in the wastewater; two sets of secondary filtration assemblies, which are located in the corresponding secondary sedimentation tank (102) and tertiary sedimentation tank (103) respectively, and are used to filter smaller floating and suspended solids; and two sets of cleaning assemblies, which are located on the corresponding secondary filtration assemblies and are used to self-clean the secondary filtration assemblies, improve the filtration effect and extend the service life.

2. The multi-layer filtration and sedimentation wastewater treatment equipment according to claim 1, characterized in that, The primary filtration assembly includes two fixed plates (4), which are respectively fixed on the inner walls of the two sides of the filter box (2). Both fixed plates (4) extend through one side of the filter box (2) and extend to the top of the collection box (3). Two rotating shafts (5) are rotatably connected to the two fixed plates (4). The same mesh conveyor belt (6) is drivenly connected to the two rotating shafts (5). Multiple baffles (7) are provided on the mesh conveyor belt (6). A first motor (8) is fixedly provided on one side of the filter box (2). The output end of the first motor (8) is fixedly connected to one of the rotating shafts (5). An S-shaped partition (9) is fixedly provided on the inner wall of one side of the filter box (2). Both fixed plates (4) extend into the interior of the S-shaped partition (9).

3. The multi-layer filtration and sedimentation wastewater treatment equipment according to claim 1, characterized in that, The secondary filtration assembly includes a first fixed cylinder (10) and a second fixed cylinder (11). The first fixed cylinder (10) and the second fixed cylinder (11) are respectively fixedly installed on both sides of the secondary sedimentation tank (102). The end of the first fixed cylinder (10) away from the second fixed cylinder (11) is sealed. The ends of the first fixed cylinder (10) and the second fixed cylinder (11) close to each other are connected to the same filter cylinder (15). The sealed end of the first fixed cylinder (10) is rotatably connected to a screw rod (12). The screw rod (12) passes through the filter cylinder (15) and extends into the interior of the second fixed cylinder (11). A water inlet pipe is fixedly connected to one side of the first fixed cylinder (10). The water inlet pipe is connected to a corresponding port. A drive assembly for driving the screw rod (12) to rotate is provided on one side of the secondary sedimentation tank (102).

4. The multi-layer filtration and sedimentation wastewater treatment equipment according to claim 3, characterized in that, The drive assembly includes a dual-output shaft gearbox (16), which is fixedly mounted on one side of the secondary sedimentation tank (102). The two output ends of the dual-output shaft gearbox (16) rotate in opposite directions. One output end of the dual-output shaft gearbox (16) is fixedly connected to a screw rod (12). A second motor (17) is fixedly mounted on one side of the dual-output shaft gearbox (16), and the output end of the second motor (17) is fixedly connected to the input end of the dual-output shaft gearbox (16).

5. A multi-layer filtration and sedimentation wastewater treatment device according to claim 4, characterized in that, The cleaning assembly includes two mounting plates (18), which are respectively fixed on the top of the first fixed cylinder (10) and the second fixed cylinder (11). The two mounting plates (18) are fixedly connected to the same high-pressure water pipe (22). The bottom of the high-pressure water pipe (22) is fixedly connected to multiple high-pressure nozzles. The high-pressure water pipe (22) is connected to an external high-pressure water source.

6. A multi-layer filtration and sedimentation wastewater treatment device according to claim 5, characterized in that, The first fixed cylinder (10) and the second fixed cylinder (11) are rotatably connected to a first rotating ring (13) and a second rotating ring (14) respectively at their close ends. The first rotating ring (13) and the second rotating ring (14) are respectively inside the first fixed cylinder (10) and the second fixed cylinder (11). The two ends of the filter cylinder (15) are fixedly connected to the first rotating ring (13) and the second rotating ring (14) respectively. The outer wall of the first rotating ring (13) is fixedly fitted with a driven gear (21). A transmission rod (19) is rotatably connected through the two mounting plates (18). A driving gear (20) is fixedly fitted on the transmission rod (19). The driving gear (20) meshes with the driven gear (21). One end of the transmission rod (19) is fixedly connected to the other output end of the dual output shaft gearbox (16).

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