Horizontal self-maintenance centrifugal filter without shutdown

Abstract

This invention relates to a horizontal, non-stop, self-maintaining centrifugal filter, effectively solving the problem of incomplete self-cleaning during centrifugal filtration and the need for machine shutdown for cleaning. The technical solution includes a horizontally placed filter cartridge with a mesh-like outer edge. N horizontal drain ports are evenly distributed around the outer edge of the filter cartridge. Each drain port is fixed with a drain box communicating with the interior of the filter cartridge. The left end of the drain box is positioned on the left side of the filter cartridge and is open. The distance between the outer plate of the drain box and the filter cartridge is left-far-right-near. A rotating shaft is located at the axis of the filter cartridge, and N blocking boxes are fixed to the shaft via connecting rods. Each blocking box corresponds to a drain port and can seal the drain port. This invention enables rapid self-cleaning during centrifugal filtration through power switching, while also ensuring that filtered impurities are completely discharged from the filter cartridge, guaranteeing stable operation over a long period.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, and in particular to a horizontal, non-stop, self-maintaining centrifugal filter. Background Technology

[0002] Wastewater treatment equipment is indispensable in various industrial production processes such as textiles, chemicals, steelmaking, food processing, and electronics. Wastewater must be treated to meet environmental standards before it can be safely discharged. Primary filtration typically removes impurities from the wastewater. Currently, this type of equipment is diverse, with varying structures and features. Improving filtration speed, eliminating downtime, and enabling self-cleaning are ongoing goals in this field.

[0003] For example, patent document CN104941280B describes a circumferential pressure filter without filter media. This device utilizes pressurized filtration and backwashing for rapid filtration and self-cleaning of the filter media. This requires multiple pumps to maintain pressure on the wastewater or backwash water, and the backwashing requires a large volume of water, necessitating a shutdown during backwashing. Many other similar devices exist; these are non-centrifugal filters, resulting in lower filtration efficiency and speed compared to centrifugal filtration, but they are relatively easier to clean than centrifugal equipment.

[0004] Another patent document, CN116870566B, describes an anti-clogging municipal sewage filtration device. This device uses centrifugal filtration and cleverly employs different centrifugal forces to achieve internal self-cleaning. However, the drawback is that the debris after cleaning still remains inside the device, requiring the filter bag to be replaced regularly. It does not achieve long-term filtration and only achieves temporary self-cleaning.

[0005] Centrifugal filtration offers superior filtration speed and effectiveness, and its simple structure eliminates the need for pressurization. However, it requires a fixed chamber to contain the wastewater and generate centrifugal force, which means current centrifugal filtration systems cannot completely remove impurities during self-cleaning. This inevitably leads to downtime or filter replacement. Therefore, this problem needs to be addressed. Summary of the Invention

[0006] In view of the above situation and to solve the problems existing in the prior art, the purpose of this invention is to provide a horizontal, non-stop, self-maintaining centrifugal filter, which can effectively solve the problem that centrifugal filtration cannot perform thorough self-cleaning and that cleaning requires shutdown.

[0007] The technical solution includes a horizontally placed filter cartridge with a mesh-like outer edge. N horizontal drain ports are evenly distributed around the outer edge of the filter cartridge. Each drain port is fixed with a drain box that communicates with the inside of the filter cartridge. The left end of the drain box is located on the left side of the filter cartridge and is open. The distance between the outer side plate of the drain box and the filter cartridge is that the left side is farther than the right side. The filter cartridge has a rotating shaft at its axis, and N blocking boxes are fixed on the rotating shaft via a connecting rod; each blocking box corresponds to a drain outlet, and the blocking box can seal the drain outlet. The shaft and filter cartridge can rotate relative to each other by α degrees. After the shaft and filter cartridge rotate relative to each other, the baffle box re-aligns with the drain box. The filter cartridge is provided with a water-blocking sleeve on the outside, and two water-blocking rings are provided on the inner wall of the water-blocking sleeve at the left and right ends of the filter cartridge.

[0008] The N≥2, α=360 / N.

[0009] The filter cartridge is equipped with flanges at both ends, and both flanges are supported by brackets and rollers.

[0010] The filter cartridge has an inlet pipe inserted into the flange on the right end.

[0011] A drain outlet is fixed at the bottom of the water-blocking sleeve, and a scraper is fixed on the bracket. The right end of the scraper is placed inside the water-blocking sleeve and contacts the inner wall of the water-blocking sleeve.

[0012] The rotating shaft passes through the center of the flange at the left end of the filter cartridge. A turntable is fixed on the rotating shaft, and an arc-shaped groove is opened on the turntable. A positioning rod placed in the arc-shaped groove is fixed on the flange at the left end of the filter cartridge.

[0013] Both the rotating shaft and the flange at the left end of the filter cartridge are equipped with pulleys. The rotating shaft is driven to rotate by the main motor, and the filter cartridge is driven to rotate by the auxiliary motor.

[0014] This invention enables rapid self-cleaning during centrifugal filtration by switching power, while also ensuring that filtered impurities are completely discharged from the filter cartridge, guaranteeing long-term stable operation and featuring thorough and fast slag removal. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is a partial cross-sectional view of the main view of the present invention.

[0017] Figure 3 This is a front cross-sectional view of the present invention.

[0018] Figure 4 for Figure 3 Left view at point A in the middle.

[0019] Figure 5 This is a front sectional view of the present invention (with the water-blocking sleeve removed).

[0020] Figure 6 This is a left-side cross-sectional view of the present invention.

[0021] Figure 7 This is a three-dimensional schematic diagram of the present invention.

[0022] Figure 8 This is a three-dimensional schematic cross-sectional view of the present invention.

[0023] In the diagram: Filter cartridge 1; Sewage box 2; Rotary shaft 3; Baffle box 4; Water baffle sleeve 5; Water baffle ring 6; Flange 7; Support 8; Inlet pipe 9; Drain outlet 10; Scraper 11; Turntable 12; Arc groove 13; Positioning rod 14; Main motor 15; Auxiliary motor 16. Implementation

[0024] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Depend on Figures 1 to 8 The present invention includes a horizontally placed filter cartridge 1. The outer edge of the filter cartridge 1 is mesh-like, and four horizontal drain ports are evenly distributed around the outer edge of the filter cartridge 1. Each drain port is fixed with a drain box 2 that communicates with the interior of the filter cartridge 1. The left end of the drain box 2 is located on the left side of the filter cartridge 1 and is open. The drain box 2 is inclined, wherein the distance from the left end to the axis of the filter cartridge 1 is greater than the distance from the right end to the axis of the filter cartridge 1. The filter cartridge 1 has four blocking boxes 4 inside; the four blocking boxes 4 correspond one-to-one with the four drain boxes 2. When the blocking box 4 corresponds to the drain box 2, the blocking box 4 can close the drain box 2; the blocking box 4 is provided with a rubber pad on the edge facing the inner wall of the filter cartridge 1; there is a rotating shaft 3 in the middle of the filter cartridge 1, and each blocking box 4 is connected to the rotating shaft 3 through multiple connecting rods.

[0026] Both the rotating shaft 3 and the filter cartridge 1 can rotate actively. The rotating shaft 3 and the filter cartridge 1 can rotate 90 degrees relative to each other. After the rotating shaft 3 and the filter cartridge 1 rotate 90 degrees relative to each other, the blocking box 4 and the sewage discharge box 2 are still in the corresponding state, but the correspondence is not the same as before the rotation. That is, the blocking box 4 corresponds to the sewage discharge box 2 at the next position in sequence.

[0027] A ring-shaped water-blocking sleeve 5 is provided on the outer side of the filter cylinder 1. Two water-blocking rings 6 are provided on the inner wall of the water-blocking sleeve 5 at the left and right ends of the filter cylinder 1. A drain outlet 10 is fixed below the water-blocking sleeve 5. The water sprayed out of the filter cylinder 1 can be blocked by the 5 and discharged through the drain outlet 10.

[0028] The filter cartridge 1 is equipped with flanges 7 at both the left and right ends, and both flanges 7 are supported by brackets 8 and rollers; the flange 7 at the right end has a larger center hole and is fitted with a water inlet pipe 9.

[0029] To facilitate the discharge of sewage and debris, a scraper 11 is fixed on the bracket 8. The right end of the scraper 11 is placed inside the water-blocking sleeve 5 and contacts the inner wall of the water-blocking sleeve 5.

[0030] In order to enable the rotating shaft 3 and the filter cylinder 1 to rotate 90 degrees relative to each other, the rotating shaft 3 passes through the center of the flange 7 at the left end of the filter cylinder 1. A turntable 12 is fixed on the rotating shaft 3. An arc groove 13 is opened on the turntable 12. A positioning rod 14 placed in the arc groove 13 is fixed on the flange 7 at the left end of the filter cylinder 1.

[0031] In order to enable the rotating shaft 3 and the filter cartridge 1 to rotate relative to each other, pulleys are installed on the flange 7 at the left end of both the rotating shaft 3 and the filter cartridge 1. The rotating shaft 3 is driven to rotate by the main motor 15, and the filter cartridge 1 is driven to rotate by the auxiliary motor 16.

[0032] This device is a centrifugal filter, featuring timed self-cleaning without shutdown and maintenance-free operation. Specific usage instructions are as follows.

[0033] The core filtration component of this device primarily consists of filter cartridge 1, drain box 2, and baffle box 4. Drain box 2 and baffle box 4 are in a mutually corresponding state. When they are aligned, baffle box 4 seals the lower end of drain box 2, preventing water leakage (a slight leak may occur after the rubber gasket ages, but this will not affect the overall operation of the equipment). Then, the water-blocking sleeve 5 of filter cartridge 1 is activated. The water-blocking sleeve 5 rotates clockwise, causing the rotating shaft 3 to rotate. Through the action of drain box 2, rotating shaft 3, and baffle box 4, filter cartridge 1 also rotates clockwise. During this rotation, drain box 2 and baffle box 4 remain in a mutually opposing state.

[0034] Subsequently, wastewater enters the interior of filter cartridge 1 through inlet pipe 9. The rotation of filter cartridge 1 generates centrifugal force, causing the wastewater to pass through the mesh sidewalls of filter cartridge 1 and disperse outwards; while impurities in the wastewater remain on the inner wall of filter cartridge 1. Due to centrifugal force, the wastewater entering filter cartridge 1 can be filtered quickly, greatly improving the filtration effect.

[0035] During the filtration process described above, because the blocking box 4 blocks the drain box 2, the sewage cannot flow out from the drain box 2.

[0036] After filtration for a certain period of time, a lot of debris will adhere to the inner wall of filter cartridge 1, especially debris such as cotton wool, pulp, and sludge, which will seriously clog the mesh sidewall of filter cartridge 1 and affect the filtration effect. At this time, self-cleaning is required.

[0037] When self-cleaning is required, close the water-blocking sleeve 5 of filter cartridge 1 and activate the water-blocking ring 6 of filter cartridge 1. The water-blocking ring 6 of filter cartridge 1 drives filter cartridge 1 to rotate clockwise. This changes the driving force from the original rotating shaft 3 to the filter cartridge 1. Due to the change in the active-passive relationship between the rotating shaft 3 and filter cartridge 1, the rotating shaft 3 can rotate relative to filter cartridge 1 with the cooperation of the filter cartridge 1 drain box 2, the filter cartridge 1 rotating shaft 3, and the filter cartridge 1 blocking box 4. Rotating by α degrees will cause the multiple blocking boxes 4 and drain box 2 inside to rotate accordingly, realizing the change in the correspondence between the blocking boxes 4 and drain box 2. After the relative rotation stabilizes, the blocking boxes 4 and drain box 2 are still in a one-to-one correspondence.

[0038] Because the relative positions of the baffle box 4 and the drain box 2 have changed; during the relative rotation of the baffle box 4 and the drain box 2; the side wall of the filter cartridge 1 is scraped by the side wall of the baffle box 4. During the scraping process, the filter cartridge 1 is in a rotating state, that is, the centrifugal force is still there, and the water inlet pipe 9 is still in the state of water intake (no need to stop the machine); therefore, the debris and some sewage after scraping can enter the drain box 2.

[0039] Furthermore, since the outer wall of the sewage discharge box 2 is inclined, that is, the left end is far away from the filter cartridge 1, under the action of centrifugal force, the debris and some sewage that enter the sewage discharge box 2 can move to the left and be discharged from the left side.

[0040] After the drain box 2 and the blocking box 4 have rotated relative to each other and are aligned again, the drain box 2 is closed by the blocking box 4 once more.

[0041] Similarly, after running for a certain period of time, the active and passive relationship between the rotating shaft 3 and the filter cartridge 1 can be switched again to perform self-cleaning and discharge the impurities from the filter cartridge 1.

[0042] In addition, a water-retaining sleeve 5 is provided on the outer side of the filter cartridge 1 in this device, and two water-retaining rings 6 are provided inside the water-retaining sleeve 5. Through the design of the water-retaining sleeve 5 and the water-retaining rings 6, the purified water filtered by the filter cartridge 1 can be fully collected and discharged from the drain outlet 10. At the same time, due to the design of the water-retaining ring 6 on the left side, it can also isolate the purified water from the debris discharged from the sewage box 2. At the same time, by scraping the inner wall of the left side of the water-retaining sleeve 5 with the filter cartridge 1, it can be ensured that the debris is fully removed. A collection frame can be placed below the filter cartridge 1 to recover debris and some sewage.

[0043] This device cleverly solves the contradiction that centrifugal filtration requires a closed chamber, while cleaning requires an open chamber. Through the ingenious arrangement of the drain box 2 and the baffle box 4, the corresponding and relative rotation of the drain box 2 and the baffle box 4 achieves both centrifugal filtration and self-cleaning. During centrifugal filtration, the baffle box 4 closes the drain box 2, forming the centrifugal filtration chamber; when self-cleaning is required, the drain box 2 briefly opens during the relative rotation of the baffle box 4 and the drain box 2, allowing impurities to be discharged.

[0044] In this device, the blocking box 4 can both block and open the sewage box 2. In addition, during the relative rotation of the blocking box 4 and the sewage box 2, the side wall of the blocking box 4 can be used to scrape the inner wall of the filter cartridge 1; thus achieving ingenious utilization.

[0045] This device can easily control both self-cleaning and centrifugal states. Through the coordination of the filter cartridge 1 drain box 2, the filter cartridge 1 rotating shaft 3, and the filter cartridge 1 blocking box 4, it achieves self-cleaning by causing relative sliding between the two when the power is switched—either the rotating shaft 3 or the filter cartridge 1 is driven. The design is simple and ingenious; with the help of a timer or controller, timed, manual self-cleaning can be achieved.

[0046] This device boasts high self-cleaning efficiency. Through the design of multiple baffle boxes 4, the entire inner wall of the filter cartridge 1 can be self-cleaned during a brief relative sliding process. Simultaneously, during self-cleaning, the machine does not need to be stopped, and some wastewater enters the drain box 2 to flush it. Furthermore, without stopping the machine, the debris scraped from the inner wall of the filter cartridge 1 by the baffle boxes 4 can enter the drain box 2 more quickly under centrifugal force, reducing residue within the filter cartridge 1.

[0047] In this device, filter cartridge 1 is the core filtration component. By cleaning impurities out of the outside of filter cartridge 1, long-term maintenance-free and stable operation of filter cartridge 1 is achieved, effectively preventing clogging. When a thorough cleaning is required after a very long period of operation, a simple backflushing with high-pressure water is sufficient. During subsequent operation, the backflushed impurities will be automatically discharged.

Claims

1. A horizontal self-maintaining centrifugal filter without stoppage, comprising a filter cartridge (1) placed transversely, the outer edge surface of the filter cartridge (1) being net-like, characterized in that, N horizontal drain ports are evenly distributed around the outer edge of the filter cylinder (1). Each drain port is fixed with a drain box (2) that communicates with the inside of the filter cylinder (1). The left end of the drain box (2) is placed on the left side of the filter cylinder (1) and is open. The distance between the outer side plate of the drain box (2) and the filter cylinder (1) is far to the left and near to the right. The filter cartridge (1) is provided with a rotating shaft (3) at its axis, and N blocking boxes (4) are fixed on the rotating shaft (3) via a connecting rod; the blocking boxes (4) correspond one-to-one with the drain outlet, and the blocking boxes (4) can seal the drain outlet; The rotating shaft (3) and the filter cartridge (1) can rotate relative to each other by α degrees. After the rotating shaft (3) and the filter cartridge (1) rotate relative to each other, the blocking box (4) re-aligns with the sewage box (2). The filter cartridge (1) is equipped with flanges (7) at both the left and right ends. Both flanges (7) are supported by brackets (8) and rollers. Both the rotating shaft (3) and the flange (7) at the left end of the filter cartridge (1) are equipped with pulleys. The rotating shaft (3) is driven to rotate by the main motor (15), and the filter cartridge (1) is driven to rotate by the auxiliary motor (16).

2. A horizontal self-maintaining centrifugal filter machine without shutdown according to claim 1, characterized in that, The filter cylinder (1) is provided with a water-blocking sleeve (5) on the outside, and two water-blocking rings (6) are provided on the inner wall of the water-blocking sleeve (5) at the left and right ends of the filter cylinder (1).

3. A horizontal self-maintaining centrifugal filter machine without shutdown according to claim 1, characterized in that, The N≥2, α=360 / N.

4. A horizontal self-maintaining centrifugal filter machine without shutdown according to claim 1, characterized in that, The filter cartridge (1) has an inlet pipe (9) inserted into the flange (7) at the right end.

5. A horizontal, non-stop, self-maintaining centrifugal filter according to claim 2, characterized in that, A drain outlet (10) is fixed below the water-blocking sleeve (5), and a scraper (11) is fixed on the bracket (8). The right end of the scraper (11) is placed inside the water-blocking sleeve (5) and contacts the inner wall of the water-blocking sleeve (5).

6. A horizontal self-maintaining centrifugal filter machine without shutdown according to claim 1, characterized in that, The rotating shaft (3) passes through the center of the flange (7) at the left end of the filter cylinder (1). A turntable (12) is fixed on the rotating shaft (3). An arc groove (13) is opened on the turntable (12). A positioning rod (14) placed in the arc groove (13) is fixed on the flange (7) at the left end of the filter cylinder (1).

7. A horizontal self-maintaining centrifugal filter machine without shutdown according to claim 1, characterized in that, The blocking box (4) is provided with a rubber pad on the edge facing the inner wall of the filter cylinder (1).

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