Industrial wastewater filtering device with backwashing mechanism

Abstract

The utility model discloses an industrial wastewater filtering device with a backwashing mechanism, which comprises a filtering tank body and a water inlet, one side of the filtering tank body is provided with the water inlet, the other side of the filtering tank body is provided with a water outlet, an upper square flange of the filtering tank body is connected with a top cover, the filtering tank body is internally provided with a filter element, and the filter element is provided with a backwashing mechanism. A backwashing pipeline is arranged in the middle of the filter element, and a spray head is arranged on the outer surface of the backwashing pipeline. According to the industrial wastewater filtering device with the backwashing mechanism, a motor drives a first bevel gear to rotate through a driving shaft, a second bevel gear meshed with the first bevel gear drives a backwashing pipeline to rotate synchronously, so that a spray head rotates in a filter element, and meanwhile, a backwashing pump conveys high-pressure water to the backwashing pipeline through a connecting pipe and a flange bearing; the rotary nozzle backwashes the inner surface of the filter element through water flow, impurities on the surface of the filter element are effectively removed, the filtering performance is recovered, the filtering performance is improved, the cost is reduced, and the use efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial wastewater treatment technology, specifically to an industrial wastewater filtration device with a backwashing mechanism. Background Technology

[0002] Industrial wastewater includes production wastewater, industrial sewage, and cooling water. It refers to wastewater and waste liquid in the industrial production process, which contains industrial production materials, intermediate products, by-products, and pollutants generated during the production process that are lost with the water. Furthermore, the pollutants in the wastewater include not only those dissolved in the water, but also larger solid pollutants such as plastics, branches, and gravel that are discharged with the wastewater.

[0003] However, existing industrial wastewater filtration devices still have certain problems in use:

[0004] For example, application number CN202020657421.2 describes an industrial wastewater filtration tank, comprising a tank body and an inlet and an outlet connected to the tank body; a support grid for carrying activated carbon is fixed in the lower section of the tank body, and a clamping assembly is provided on the support grid; a vertically placed lifting rod is provided in the tank body, the lower end of the lifting rod is formed with a pointed tip, and the pointed tip engages with the clamping assembly; and a downwardly oriented discharge port is connected to the upper section of the tank body.

[0005] Traditional industrial wastewater filtration devices often have their filter screens or cartridges clogged with impurities after prolonged use, leading to a decrease in filtration efficiency. Frequent replacement of filter screens or cartridges is not only costly but also affects the continuity of production and reduces the efficiency of the equipment.

[0006] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0007] To address the aforementioned issues, an innovative design was developed based on existing industrial wastewater filtration devices. Utility Model Content

[0008] The purpose of this utility model is to provide an industrial wastewater filtration device with a backwashing mechanism to solve the problem that the filter screen or filter element of the industrial wastewater filtration device mentioned in the background art is easily clogged by impurities after long-term use, resulting in a decrease in filtration efficiency. Frequent replacement of filter screen or filter element is not only costly, but also affects the continuity of production and reduces the efficiency of device use.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An industrial wastewater filtration device with a backwashing mechanism includes a filter tank and an inlet. The filter tank has an inlet on one side and an outlet on the other side. A top cover is connected to the filter tank via a flange. A filter element is installed inside the filter tank, and a backwashing pipe is located in the middle of the filter element. A nozzle is installed on the outer surface of the backwashing pipe. A motor is mounted on the outer side of the top cover, and a drive shaft is fixed to the output end of the motor. A first bevel gear is fixed to the top of the drive shaft. A second bevel gear, meshing with the first bevel gear, is fixed to the outer surface of the backwashing pipe. A backwashing pump is installed above the top cover, and a connecting pipe is connected to the backwashing pipe via a flange. The connecting pipe and the backwashing pipe are connected via a flange bearing, and the backwashing pipe is movably connected to the flange bearing and penetrates the top cover.

[0011] Using the above technical solution, the motor drives the first bevel gear to rotate through the drive shaft, and the second bevel gear meshing with the first bevel gear drives the backwashing pipe to rotate synchronously, so that the nozzle rotates inside the filter element. At the same time, the backwashing pump delivers high-pressure water to the backwashing pipe through the connecting pipe and flange bearing. The rotating nozzle backwashes the inner surface of the filter element with water flow, effectively removing impurities from the surface of the filter element and restoring the filtration performance, improving filtration performance, reducing costs, and improving the efficiency of the device.

[0012] Preferably, multiple sets of nozzles are arranged along the outer surface of the backwash pipe, and the nozzles are arranged in a spiral ring shape.

[0013] By adopting the above technical solution, the design of the nozzles being distributed in a spiral ring along the outer surface of the backwashing pipe enables the nozzles to form a continuous spiral flushing trajectory that covers the entire height of the filter element when the pipe rotates. This effectively increases the backwashing area, significantly improves the uniformity of the backwashing water flow on the surface of the filter element, ensures that impurities are removed without dead corners, and efficiently restores the filtration performance of the filter element.

[0014] Preferably, a fixing plate is fixed inside the filter tank, and an internal thread groove is provided in the middle of the fixing plate. A support plate is fixed inside the filter tank, and an external thread groove is provided at the bottom of the filter element, which is threadedly connected to the internal thread groove.

[0015] By adopting the above technical solution, the external threaded groove at the bottom of the filter element and the internal threaded groove in the middle of the fixed support plate are connected by threads. With the support of the support plate, the filter element is firmly installed in the filter tank, which facilitates the installation and disassembly of the filter element. It ensures the stability of the filter element position under the impact of high-pressure water flow during backwashing, avoids loosening that could lead to backwashing failure, and ensures the reliability of the filtration and backwashing process.

[0016] Preferably, the upper end face of the filter element is symmetrically equipped with two sets of handles.

[0017] By adopting the above technical solution, two sets of handles are symmetrically set on the upper end of the filter element, which makes it easier for operators to apply force to the filter element during installation or disassembly, reducing the difficulty of manual operation, improving the convenience of operation and the installation accuracy of the filter element, and ensuring the efficiency and safety of the maintenance of the filtration device.

[0018] Preferably, the bottom of the filter tank is connected to a drain port, and a solenoid valve is provided on the outside of the drain port.

[0019] With the above technical solution, the drain port at the bottom of the filter tank is connected to the inside of the filter tank. During backwashing, impurities are collected at the bottom with the water flow. After the solenoid valve is opened, the impurities are discharged through the drain port, which avoids impurities from being retained in the tank. At the same time, the drain port is sealed during the filtration stage to prevent wastewater leakage and ensure the continuity and sealing of the device operation.

[0020] Compared with the prior art, the beneficial effects of this utility model are: the industrial wastewater filtration device with a backwashing mechanism,

[0021] 1. The motor drives the first bevel gear to rotate through the drive shaft. The second bevel gear, which meshes with the first bevel gear, drives the backwash pipe to rotate synchronously, causing the nozzle to rotate inside the filter element. At the same time, the backwash pump delivers high-pressure water to the backwash pipe through the connecting pipe and flange bearing. The rotating nozzle backwashes the inner surface of the filter element with water flow, effectively removing impurities from the filter element surface and restoring filtration performance, improving filtration performance, reducing costs, and improving the efficiency of the device.

[0022] 2. The design of the nozzles being spirally distributed along the outer surface of the backwash pipe allows the nozzles to form a continuous spiral flushing trajectory that covers the entire height of the filter element as the pipe rotates. This effectively increases the backwash area and significantly improves the uniformity of the backwash water flow on the filter element surface, ensuring that impurities are removed without dead angles and efficiently restoring the filter element's filtration performance.

[0023] 3. The external threaded groove at the bottom of the filter element and the internal threaded groove in the middle of the fixed support plate are connected by threads. With the support of the support plate, the filter element is firmly installed in the filter tank, which facilitates the installation and removal of the filter element. It ensures the stability of the filter element under the impact of high-pressure water flow during backwashing, avoids loosening that could lead to backwashing failure, and ensures the reliability of the filtration and backwashing process.

[0024] 4. The drain port at the bottom of the filter tank is connected to the inside of the filter tank. During backwashing, impurities are collected at the bottom with the water flow. After the solenoid valve is opened, the impurities are discharged through the drain port to avoid impurities from being retained in the tank. At the same time, the drain port is sealed during the filtration stage to prevent wastewater leakage and ensure the continuity and sealing of the device operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of the main body of this utility model;

[0026] Figure 2 This is a schematic cross-sectional view of the main body of this utility model;

[0027] Figure 3 This is a schematic diagram of the filter element installation structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the rotating structure of the nozzle of this utility model;

[0029] Figure 5 This is a schematic diagram of the connection structure between the backwashing pipe and the connecting pipe of this utility model.

[0030] In the diagram: 1. Filter tank; 2. Inlet; 3. Outlet; 4. Top cover; 5. Fixed support plate; 6. Internal threaded groove; 7. Support plate; 8. Filter element; 9. External threaded groove; 10. Handle; 11. Backwash pipe; 12. Nozzle; 13. Motor; 14. Drive shaft; 15. First bevel gear; 16. Second bevel gear; 17. Backwash pump; 18. Connecting pipe; 19. Flange bearing; 20. Drain outlet; 21. Solenoid valve. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 This utility model provides a technical solution:

[0034] An industrial wastewater filtration device with a backwashing mechanism includes a filter tank 1 and an inlet 2. The inlet 2 is located on one side of the filter tank 1, and the outlet 3 is located on the other side. A top cover 4 is connected to the top flange of the filter tank 1. A filter element 8 is installed inside the filter tank 1, and a backwashing pipe 11 is located in the middle of the filter element 8. A nozzle 12 is installed on the outer surface of the backwashing pipe 11. A motor 13 is installed on the outside of the top cover 4, and a drive shaft 14 is fixed to the output end of the motor 13. A first bevel gear 15 is fixed at the top of the top cover 4. A second bevel gear 16, which meshes with the first bevel gear 15, is fixed on the outer surface of the backwash pipe 11. A backwash pump 17 is installed above the top cover 4. A connecting pipe 18 is connected to the flange on the outer surface of the backwash pump 17. The connecting pipe 18 and the backwash pipe 11 are connected through a flange bearing 19. The backwash pipe 11 is movably connected to the flange bearing 19 and passes through the top cover 4. The backwash pipe 11 is further connected to the top cover 4 through a bearing.

[0035] This industrial wastewater filtration device with a backwashing mechanism allows industrial wastewater to flow into the filter tank 1 from the inlet 2, be filtered by the filter element 8, and then be discharged from the outlet 3. When backwashing is required, the backwashing pump 17 is started, and high-pressure water is delivered to the backwashing pipe 11 through the connecting pipe 18 and the flange bearing 19. The nozzles 12 on the outer surface of the pipe spray water to wash the filter element 8. At the same time, the motor 13 drives the drive shaft 14 to rotate. The first bevel gear 15 at the top of the drive shaft 14 meshes with the second bevel gear 16 on the outer surface of the backwashing pipe 11, causing the backwashing pipe 11 to rotate. This drives the nozzles 12 to wash the filter element 8 at multiple angles, improving the backwashing effect, effectively removing impurities from the surface of the filter element 8 and restoring its filtration performance, thereby improving filtration performance, reducing costs, and increasing the efficiency of the device.

[0036] Example 2

[0037] Please see Figure 4 , Figure 5 This utility model provides a technical solution:

[0038] Multiple sets of nozzles 12 are arranged along the outer surface of the backwash pipe 11, and the nozzles 12 are arranged in a spiral ring. A fixed support plate 5 is fixed inside the filter tank 1, and an internal thread groove 6 is opened in the middle of the fixed support plate 5. A support plate 7 is fixed inside the filter tank 1, and the bottom of the filter element 8 is provided with an external thread groove 9 that is threadedly connected to the internal thread groove 6. Two sets of handles 10 are symmetrically installed on the upper end face of the filter element 8.

[0039] This industrial wastewater filtration device with a backwashing mechanism has multiple sets of nozzles 12 arranged in a spiral ring on the outer surface of the backwashing pipe 11. When the backwashing pipe 11 rotates, the nozzles 12 can cover and rinse the filter element 8 from different angles and heights, avoiding blind spots and effectively removing impurities from the surface of the filter element 8. The external threaded groove 9 at the bottom of the filter element 8 is threadedly connected to the internal threaded groove 6 in the middle of the fixed support plate 5, and together with the support plate 7, it provides stable support, ensuring that the filter element 8 is stable under the high pressure impact of backwashing, and is easy to disassemble and replace. Two sets of handles 10 are symmetrically arranged on the upper end of the filter element 8, providing a point of leverage for operators to disassemble and install the filter element 8, reducing the difficulty of manual operation, improving the convenience of operation and the installation accuracy of the filter element 8, and ensuring the efficiency and safety of the filtration device maintenance.

[0040] Example 3

[0041] Please see Figure 1 , Figure 2 This utility model provides a technical solution:

[0042] The bottom of the filter tank 1 is connected to a drain port 20, and a solenoid valve 21 is installed on the outside of the drain port 20.

[0043] This industrial wastewater filtration device with a backwashing mechanism has a drain port 20 at the bottom of the filter tank 1 that is directly connected to the inside of the filter tank 1. During the backwashing process, the impurities washed down by the nozzle 12 from the filter element 8 are collected at the bottom of the filter tank 1 with the water flow. The solenoid valve 21 opens, and the impurities are quickly discharged out of the device through the drain port 20. During the normal filtration stage, the solenoid valve 21 remains closed to prevent untreated wastewater from leaking and to ensure the sealing and effectiveness of the filtration process. The precise control of the opening and closing of the drain port 20 by the solenoid valve 21 realizes the automation and efficiency of backwashing and sewage discharge, ensuring the stable operation of the industrial wastewater filtration device.

[0044] Working principle:

[0045] In use, industrial wastewater flows into the filter tank 1 from the inlet 2, is filtered by the filter element 8, and is discharged from the outlet 3. When backwashing is required, the backwash pump 17 is started, and high-pressure water is sent into the backwash pipe 11 through the connecting pipe 18 and the flange bearing 19. Multiple sets of nozzles 12 are spirally distributed around the outside of the pipe. Driven by the motor 13, the drive shaft 14 rotates the backwash pipe 11 through the meshing of the first bevel gear 15 and the second bevel gear 16, which washes the filter element 8 from multiple angles. During backwashing, the impurities washed down by the nozzles 12 gather at the bottom of the tank, the solenoid valve 21 opens, and the impurities are discharged through the drain port 20. During normal filtration, the solenoid valve 21 is closed. All components work together to achieve efficient filtration, backwashing, and sewage discharge in an automated manner.

[0046] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial wastewater filtration device with a backwashing mechanism, comprising a filter tank (1) and an inlet (2), characterized in that: The filter tank (1) has an inlet (2) on one side and an outlet (3) on the other side. A top cover (4) is connected to the upper flange of the filter tank (1). A filter element (8) is installed inside the filter tank (1). A backwash pipe (11) is installed in the middle of the filter element (8). A nozzle (12) is installed on the outer surface of the backwash pipe (11). A motor (13) is installed on the outside of the top cover (4). A drive shaft (14) is fixed to the output end of the motor (13). The top of the cover (4) is fixed with a first bevel gear (15), and the outer surface of the backwash pipe (11) is fixed with a second bevel gear (16) that meshes with the first bevel gear (15). A backwash pump (17) is installed above the cover (4). A connecting pipe (18) is connected to the flange on the outer surface of the backwash pump (17). The connecting pipe (18) and the backwash pipe (11) are connected through a flange bearing (19). The backwash pipe (11) is movably connected to the flange bearing (19), and the backwash pipe (11) passes through the cover (4).

2. The industrial wastewater filtration device with a backwashing mechanism according to claim 1, characterized in that: Multiple sets of nozzles (12) are arranged along the outer surface of the backwash pipe (11), and the nozzles (12) are arranged in a spiral ring.

3. An industrial wastewater filtration device with a backwashing mechanism according to claim 1, characterized in that: The filter tank (1) is fixed with a fixed support plate (5) inside. The fixed support plate (5) has an internal thread groove (6) in the middle. The filter tank (1) is fixed with a support plate (7) inside. The filter element (8) has an external thread groove (9) at the bottom that is threaded to the internal thread groove (6).

4. An industrial wastewater filtration device with a backwashing mechanism according to claim 1, characterized in that: The filter element (8) has two sets of handles (10) symmetrically installed on its upper end.

5. An industrial wastewater filtration device with a backwashing mechanism according to claim 1, characterized in that: The bottom of the filter tank (1) is connected to a drain port (20), and a solenoid valve (21) is provided on the outside of the drain port (20).

Images