Efficient fiber filtering system for treating wastewater in sock industry

Abstract

The invention relates to an efficient fiber filtering system for sock industry wastewater treatment, the efficient fiber filtering system comprises a primary filtering box and a secondary filtering box, a primary filtering assembly is arranged in an inner cavity of the primary filtering box, and a secondary filtering assembly is arranged in an inner cavity of the secondary filtering box; and the secondary filtering assembly comprises a filtering cylinder fixed to the top of the secondary filtering box, and the top of the filtering cylinder communicates with an inner cavity of the primary filtering box through a communicating opening. According to the efficient fiber filtering system for sock industry wastewater treatment, the primary filtering box adopts a primary filtering net capable of circularly rotating to intercept large-particle fibers, and automatic slag removal is achieved in cooperation with a scraper; and the secondary filter tank deeply intercepts fine fibers through a precise filter cartridge to form a coarse-to-fine gradient filter system, so that the high fiber load characteristic of the wastewater in the sock industry is effectively handled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hosiery wastewater treatment, in particular to a high-efficiency fiber filtering system for hosiery wastewater treatment. BACKGROUND

[0002] A large amount of fiber-containing wastewater is generated in the production process of hosiery. The suspended short fibers in such wastewater are prone to entanglement and blockage. The traditional filtering process has significant defects: fixed grating or filter screen is often used for primary filtration, and fiber accumulation leads to frequent blockage, which requires manual cleaning during shutdown, affecting continuous production; bag-type or filter core filtration is often used for secondary filtration, and the filter material needs to be disassembled for cleaning, which is cumbersome and cannot be maintained online. In the prior art, although drum filtration or backwashing design is used, it is difficult to completely remove the fine fibers embedded in the mesh, and the filtering efficiency decreases rapidly after long-term operation. In addition, the separation of fibers and wastewater is not complete, which increases the load of subsequent treatment, and there is a lack of effective fiber collection mechanism, which easily causes secondary pollution. Therefore, it is urgent to develop a special filtering system for hosiery wastewater that can continuously operate, efficiently intercept fibers, has self-cleaning ability, and realizes complete separation of solid and liquid. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a high-efficiency fiber filtering system for hosiery wastewater treatment, which solves the problems mentioned above.

[0004] To achieve the above purpose, the present application realizes the following technical scheme: a high-efficiency fiber filtering system for hosiery wastewater treatment, comprising a primary filtering box and a secondary filtering box, wherein the inner cavity of the primary filtering box is provided with a primary filtering assembly, and the inner cavity of the secondary filtering box is provided with a secondary filtering assembly; The secondary filtering assembly comprises a filter cylinder fixed at the top of the secondary filtering box, the top of the filter cylinder is communicated with the inner cavity of the primary filtering box through a communication port, the inner cavity of the secondary filtering box is fixedly connected with a partition plate located below the filter cylinder, the inner cavity of the secondary filtering box is rotatably connected with a rotating shaft rotatably sealed with the partition plate and the inner cavity of the filter cylinder, the rotating shaft is driven by a driving mechanism, the inner cavity of the rotating shaft located in the filter cylinder is fixedly connected with a scraper abutting against the inner cavity of the filter cylinder, the surface of the rotating shaft located below the filter cylinder is fixedly connected with a connecting rod, the top of the connecting rod is rotatably connected with the top of the inner cavity of the secondary filtering box through a rotating ring, one side of the connecting rod is rotatably connected with a roller shaft abutting against the surface of the filter cylinder, and the surface of the roller shaft is provided with convex points matched with the mesh holes on the surface of the filter cylinder. It also includes a slag discharge assembly installed on the surface of the secondary filter box for applying suction. During use, wastewater is added to the primary filter box and undergoes initial filtration through the primary filtration assembly. Initial filtration occurs through a large-diameter primary filter screen. If the primary filter screen becomes clogged, a drive roller rotates, causing the primary filter screen to rotate and scrape off the surface fibers via a top plate. The wastewater, after initial filtration, enters the filter cylinder of the secondary filter box through a connecting port. After filtration by the filter cylinder, it is discharged from the drain port. At this point, fibers adhere to the inner cavity of the filter cylinder. A motor-driven rotating shaft rotates, causing a scraper and connecting rod to rotate synchronously. The scraper's rotation cleans the inner wall of the filter cylinder. While cleaning, the outer rollers rotate synchronously, squeezing the outer side of the filter cylinder where it contacts the scraper to prevent the internal fibers from being squeezed outwards. The protrusions also squeeze the mesh of the filter cylinder to prevent clogging. After the internal limiter is scraped off, negative pressure is created through the connecting pipe, drawing the fibers through the connecting groove into the spacer below the partition plate. The fibers are then transported to the discharge box through the connecting pipe. Wastewater rises and flows back into the primary filter box after being filtered by the overflow filter screen. The fibers are blocked and accumulate at the bottom. Cleaning is then performed by periodically opening the slag discharge pipe. The secondary filtration effectively treats the fibers and allows for continuous cleaning of the filter components without stopping the machine. Furthermore, the cleaning process prevents secondary fiber adhesion, ensuring thorough treatment.

[0005] As a further aspect of the present invention: the roller and the scraper both rotate around the rotation axis on the outer and inner sides of the filter cylinder, respectively.

[0006] As a further aspect of the present invention: the inner cavity of the rotating shaft is provided with a connecting groove with its two ends located at the inner cavity of the filter cylinder and below the partition plate, respectively.

[0007] As a further aspect of the present invention: the slag discharge assembly includes a discharge box fixed on the surface of the secondary filter box, and the inner cavity of the discharge box is connected to the inner cavity of the secondary filter box located below the partition plate through a connecting pipe driven by a pump.

[0008] As a further aspect of the present invention: an overflow filter screen is fixedly connected to the inner cavity of the discharge box, the top of the discharge box is connected to the inner cavity of the primary filter box, and a slag discharge pipe is connected to the bottom of the discharge box.

[0009] As a further aspect of the present invention: the primary filtration assembly includes power rollers rotating on both sides of the primary filtration box, and a primary filter screen is connected to the surface of the power rollers. Both sides of the primary filtration box are fixedly connected to a top plate that abuts against the surface of the primary filter screen. In use, the primary filter screen with a large diameter is used for preliminary filtration. When the primary filter screen becomes clogged, the power rollers are driven to rotate, causing the primary filter screen to rotate and scrape the surface fibers off the top plate for processing.

[0010] As a further aspect of the present invention: the inner cavity of the primary filter box is fixedly connected to a baffle plate located above the power roller to prevent the scraped fibers from rising again under the water flow and adhering to the surface of the primary filter screen.

[0011] As a further aspect of the present invention: the surface of the primary filter box is provided with a discharge pipe located on the side of the top plate, and the fiber scraped off the top plate is discharged and cleaned by opening the discharge pipe at regular intervals.

[0012] Compared with the prior art, the present invention has the following advantages: Two-stage collaborative filtration, highly adaptable: The primary filter box uses a recirculating primary filter screen to intercept large fiber particles, and is equipped with a scraper for automatic sludge removal; the secondary filter box uses a precision filter cylinder to deeply trap fine fibers, forming a gradient filtration system from coarse to fine, which effectively copes with the high fiber load characteristics of sock industry wastewater.

[0013] Online self-cleaning, continuous operation: Self-cleaning primary filter: When the primary filter screen is clogged, the power roller drives it to rotate, and the top plate automatically scrapes off the accumulated fibers on the surface. The cleaning process does not require stopping the machine. Fine filtration and anti-clogging: The filter cartridge is equipped with an internal and external linkage cleaning mechanism: the internal scraper rotates to remove attached fibers, while the external roller with raised dots simultaneously squeezes the filter cartridge wall, effectively pushing out the fibers embedded in the mesh. This dual action completely avoids clogging.

[0014] High-efficiency fiber separation and recycling: The innovative negative pressure slag discharge component extracts scraped fibers through the internal connecting groove of the rotating shaft to the area below the partition plate, and then transports them to the discharge box under negative pressure through the connecting pipe; the overflow filter enables wastewater to be recycled and reused, while the fibers are trapped at the bottom of the box and discharged centrally, which significantly improves the fiber recovery rate and reduces the total amount of wastewater to be treated.

[0015] Design to prevent secondary pollution: The primary filter box is equipped with a baffle to prevent the scraped fibers from re-attaching to the filter screen with the water flow; During filter cartridge cleaning, the outer roller and the inner scraper move synchronously to prevent fibers from being squeezed through the filter cartridge and causing secondary leakage.

[0016] Modular structure, easy maintenance: The primary filtration and fine filtration units are designed independently, and the slag removal channels (primary filter discharge pipe and fine filter slag discharge pipe) are separated from the operating mechanism, which facilitates inspection and replacement in case of failure and reduces maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the structure of the present invention; Figure 3For the present invention Figure 2 A magnified view of a portion of point A in the middle.

[0018] In the diagram: 1. Secondary filter box; 2. Primary filter box; 3. Power roller; 4. Primary filter screen; 5. Top plate; 6. Baffle plate; 7. Filter cylinder; 8. Partition plate; 9. Connecting rod; 10. Rotating shaft; 11. Connecting groove; 12. Roller shaft; 13. Scraper; 14. Rotating ring; 15. Connecting port; 16. Connecting pipe; 17. Overflow filter screen; 18. Discharge box. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] Please see Figures 1-3 The present invention provides a technical solution: a high-efficiency fiber filtration system for treating sock industry wastewater, including a primary filtration box 2 and a secondary filtration box 1. The primary filtration box 2 is provided with a primary filtration component in its inner cavity, and the secondary filtration box 1 is provided with a secondary filtration component in its inner cavity. The secondary filtration assembly includes a filter cylinder 7 fixed to the top of the secondary filtration box 1. The top of the filter cylinder 7 is connected to the inner cavity of the primary filtration box 2 through a connecting port 15. A partition plate 8 located below the filter cylinder 7 is fixedly connected to the inner cavity of the secondary filtration box 1. A rotating shaft 10 is rotatably connected to the inner cavity of the secondary filtration box 1, which is rotatably sealed to the partition plate 8 and the inner cavity of the filter cylinder 7 respectively. The rotating shaft 10 is driven by a drive mechanism. A scraper 13 that abuts against the inner cavity of the filter cylinder 7 is fixedly connected to the rotating shaft 10 located in the inner cavity of the filter cylinder 7. A connecting rod 9 is fixedly connected to the surface of the rotating shaft 10 located below the filter cylinder 7. The top of the connecting rod 9 is rotatably connected to the top of the inner cavity of the secondary filtration box 1 through a rotating ring 14. A roller 12 that abuts against the surface of the filter cylinder 7 is rotatably connected to one side of the connecting rod 9. The surface of the roller 12 is provided with protrusions that are adapted to the mesh of the filter cylinder 7. It also includes a slag discharge assembly installed on the surface of the secondary filter box 1 for applying suction. During use, wastewater is added to the primary filter box 2 and undergoes primary filtration through the primary filtration assembly. Initial filtration occurs through a large-diameter primary filter screen 4. If the primary filter screen 4 becomes clogged, the drive roller 3 rotates, causing the primary filter screen 4 to rotate and scrape off the surface fibers via the top plate 5. After primary filtration, the wastewater enters the filter cylinder 7 of the secondary filter box 1 through the connecting port 15. After filtration by the filter cylinder 7, it is discharged from the drain port. At this time, fibers adhere to the inner cavity of the filter cylinder 7. The motor drives the rotating shaft 10 to rotate, causing the scraper 13 and connecting rod 9 to rotate synchronously. The rotating scraper 13 cleans the inner wall of the filter cylinder 7. Simultaneously, the outer roller 12 rotates synchronously, squeezing the outer side of the filter cylinder 7 where it contacts the scraper 13 to prevent the internal fibers from being squeezed to the outside. It also squeezes the mesh of the filter cylinder 7 through the protrusions to prevent clogging. After the internal limit is scraped off, a negative pressure is formed through the connecting pipe 16, and the fibers are drawn into the spacer plate 8 through the connecting groove 11. Then, they are transported to the discharge box 18 through the connecting pipe 16. The wastewater rises back into the primary filter box 2 after being filtered by the overflow filter screen 17. The fibers are blocked and accumulate at the bottom. Then, the slag discharge pipe is opened at regular intervals for cleaning. The secondary filtration effectively treats the fibers and can clean the filter components without stopping the machine. During cleaning, it can prevent the fibers from adhering again, ensuring thorough treatment.

[0021] Both the roller 12 and the scraper 13 rotate around the rotating shaft 10 on the outside and inside of the filter cylinder 7, respectively.

[0022] The inner cavity of the rotating shaft 10 has a connecting groove 11 with its two ends located in the inner cavity of the filter cylinder 7 and below the partition plate 8, respectively.

[0023] The slag discharge assembly includes a discharge box 18 fixed on the surface of the secondary filter box 1. The inner cavity of the discharge box 18 is connected to the inner cavity of the secondary filter box 1 located below the partition plate 8 through a connecting pipe 16 driven by a pump.

[0024] An overflow filter 17 is fixedly connected to the inner cavity of the discharge box 18. The top of the discharge box 18 is connected to the inner cavity of the primary filter box 2, and the bottom of the discharge box 18 is connected to a slag discharge pipe.

[0025] The primary filtration assembly includes power rollers 3 rotating on both sides of the primary filtration box 2. The surface of the power rollers 3 is connected to the primary filter screen 4. Both sides of the primary filtration box 2 are fixedly connected to top plates 5 that abut against the surface of the primary filter screen 4. During use, the primary filter screen 4 with a large diameter is used for preliminary filtration. When the primary filter screen 4 becomes clogged, the power rollers 3 are driven to rotate, which causes the primary filter screen 4 to rotate and scrape the surface fibers off the top plates 5 for processing.

[0026] The inner cavity of the primary filter box 2 is fixedly connected to a baffle plate 6 located above the power roller 3 to prevent the scraped fibers from rising again under the water flow and adhering to the surface of the primary filter screen 4.

[0027] The surface of the primary filter box 2 is provided with a discharge pipe located on the side of the top plate 5. The fiber scraped off the top plate 5 is discharged and cleaned by opening the discharge pipe at regular intervals.

[0028] In use, the invention includes the following initial filtering stage: Wastewater is injected into the primary filter box 2, where it undergoes coarse filtration via the primary filter screen 4 driven by the power roller 3, trapping large fiber particles on the screen surface. When the primary filter screen 4 becomes clogged, the power roller 3 rotates, moving the filter screen, and the top plate 5 scrapes the surface fibers to the bottom of the box, where they are periodically cleaned via the side discharge pipe. The baffle plate 6 blocks water flow disturbances, preventing the fibers from floating back up.

[0029] Secondary fine filtration: After preliminary filtration, the wastewater enters the inner cavity of the filter cartridge 7 of the secondary filtration box 1 through the connecting port 15. Deep filtration is achieved through the filter cartridge mesh, and the purified water is discharged from the drain outlet. The fine fibers adhere to the inner wall of the filter cartridge.

[0030] Filter cartridge self-cleaning process: Synchronous scraping: Start the drive mechanism to drive the rotating shaft 10 to rotate, and the scraper 13 fixed on the shaft rotates close to the inner wall of the filter cylinder 7 to scrape off the fibers; Anti-clogging reinforcement: The rotating shaft 10 synchronously drives the connecting rod 9 and the roller shaft 12 to rotate. The protrusions on the surface of the roller shaft continuously squeeze the outer wall of the filter cylinder 7, pushing out the fibers that block the mesh, thus preventing the fibers from being squeezed inward and penetrated during scraping.

[0031] Fiber negative pressure recovery: The fibers that are scraped off enter the area above the partition plate 8 with the water flow. The connecting pipe 16 of the slag discharge assembly is driven by the pump to form a negative pressure at the connecting groove 11 inside the rotating shaft 10, which sucks the fibers into the space below the partition plate 8 and then transports them to the discharge box 18 through the connecting pipe 16.

[0032] Wastewater reuse and solid waste discharge: The mixed liquid entering the discharge box 18 is separated by the overflow filter 17: the wastewater rises through the filter and flows back to the primary filter box 2 for recycling; the fibers are trapped at the bottom of the box and discharged in a centralized manner by opening the slag discharge pipe periodically, so as to achieve zero fiber residue and wastewater reduction.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-efficiency fiber filtration system for treating wastewater from the hosiery industry, comprising a primary filter box (2) and a secondary filter box (1), characterized in that: The inner cavity of the primary filter box (2) is provided with a primary filter assembly, and the inner cavity of the secondary filter box (1) is provided with a secondary filter assembly. The secondary filtration assembly includes a filter cylinder (7) fixed to the top of the secondary filtration box (1). The top of the filter cylinder (7) is connected to the inner cavity of the primary filtration box (2) through a connecting port (15). A partition plate (8) located below the filter cylinder (7) is fixedly connected to the inner cavity of the secondary filtration box (1). A rotating shaft (10) is rotatably connected to the inner cavity of the secondary filtration box (1), which is rotatably sealed to both the partition plate (8) and the inner cavity of the filter cylinder (7). The rotating shaft (10) is driven by a driving mechanism. A scraper (13) is fixedly connected to the inner cavity of the filter cylinder (7) and abuts against the inner cavity of the filter cylinder (7). A connecting rod (9) is fixedly connected to the surface of the rotating shaft (10) below the filter cylinder (7). The top of the connecting rod (9) is rotatably connected to the top of the inner cavity of the secondary filter box (1) through a rotating ring (14). A roller (12) is rotatably connected to one side of the connecting rod (9) and abuts against the surface of the filter cylinder (7). The surface of the roller (12) is provided with protrusions that are adapted to the mesh of the filter cylinder (7). It also includes a slag discharge assembly installed on the surface of the secondary filter box (1) for applying suction.

2. The high-efficiency fiber filtration system for treating hosiery wastewater according to claim 1, characterized in that: The roller (12) and scraper (13) rotate around the rotating shaft (10) on the outside and inside of the filter cylinder (7), respectively.

3. The high-efficiency fiber filtration system for treating hosiery wastewater according to claim 1, characterized in that: The inner cavity of the rotating shaft (10) has a connecting groove (11) with its two ends located in the inner cavity of the filter cylinder (7) and below the partition plate (8), respectively.

4. The high-efficiency fiber filtration system for treating hosiery wastewater according to claim 1, characterized in that: The slag discharge assembly includes a discharge box (18) fixed on the surface of the secondary filter box (1). The inner cavity of the discharge box (18) is connected to the inner cavity of the secondary filter box (1) located below the partition plate (8) through a connecting pipe (16) driven by a pump.

5. The high-efficiency fiber filtration system for treating hosiery wastewater according to claim 4, characterized in that: An overflow filter (17) is fixedly connected to the inner cavity of the discharge box (18). The top of the discharge box (18) is connected to the inner cavity of the primary filter box (2). A slag discharge pipe is connected to the bottom of the discharge box (18).

6. The high-efficiency fiber filtration system for treating hosiery wastewater according to claim 1, characterized in that: The primary filtration assembly includes a power roller (3) rotating on both sides of the primary filtration box (2), and a primary filter screen (4) is connected to the surface of the power roller (3). A top plate (5) is fixedly connected to both sides of the primary filtration box (2) and abuts against the surface of the primary filter screen (4).

7. The high-efficiency fiber filtration system for treating hosiery wastewater according to claim 1, characterized in that: The inner cavity of the primary filter box (2) is fixedly connected to a baffle plate (6) located above the power roller (3).

8. The high-efficiency fiber filtration system for treating hosiery wastewater according to claim 1, characterized in that: The surface of the primary filter box (2) is provided with a discharge pipe located on the side of the top plate (5).

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