Self-cleaning filtering device

Abstract

The utility model relates to the technical field of filtering, in particular to a self-cleaning filtering device. The self-cleaning filtering device comprises a filter cartridge, a downward-concave net rack is fixedly erected at the bottom of the filter cartridge, a middle connecting disc is fixedly mounted in the middle of the downward-concave net rack, and a filter screen is fixedly mounted on the downward-concave net rack; a liquid guide pipe is fixedly installed on the middle connecting disc, a liquid outlet is formed in the pipe section, close to the middle connecting disc, of the liquid guide pipe, and the liquid guide pipe is sleeved with a floating disc in sliding connection; and a cleaning ring and a driving part are mounted on the floating disc. According to the self-cleaning filtering device provided by the utility model, the cleaning brush on the outer ring of the cleaning ring is tightly propped against the inner wall of the filter cartridge, and attached impurities on the inner wall of the filter cartridge can be brushed in the rotating process, so that the filter screen and the inner wall of the filter cartridge can be cleaned in all directions, and the influence of impurity accumulation on the filtering efficiency is avoided; and the supplied clean water not only can wash dirt, but also can be used as a floating medium to drive the cleaning ring to float up and down so as to clean the inner wall of the filter cartridge.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field especially relates to a self-cleaning filter device. BACKGROUND

[0002] In sewage treatment system needs through multichannel filter structure to sewage filtration, and traditional filter structure usually every operation a period of time needs to stop machine disassembly, manual cleaning of the filter screen on the scale, silt and other impurities, not only occupy a large number of working hours, will also cause production interruption, increase enterprise operating costs, and part of the existing self-cleaning filter equipment although can realize automatic cleaning, but still there are obvious defects, such as through the cleaning of the cleaning component movement trajectory fixed, cannot flush the top edge of filter cartridge, part adopts screw lifting structure and drives cleaning component to ascend and descend in filter cartridge, but dirt can easily cause screw damage, service life is not good hidden trouble, therefore can not satisfy the long-term filtration needs of high flow, high impurity content fluid.

[0003] Therefore, it is necessary to provide a new self-cleaning filter device to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] To solve the above technical problems, the utility model provides a self-cleaning filter device.

[0005] The self-cleaning filter device provided by the utility model includes a filter cartridge, a lower concave net rack is fixedly arranged at the bottom of the filter cartridge, a middle connecting disc is fixedly installed at the middle part of the lower concave net rack, and a plurality of annular filter screens are fixedly installed on the lower concave net rack.

[0006] A liquid guide pipe is fixedly installed on the middle connecting disc, the top of the liquid guide pipe extends out of the filter cartridge, a plurality of annular liquid discharge openings are formed in the pipe section of the liquid guide pipe close to the middle connecting disc, and a floating disc is sleeved and connected with the liquid guide pipe in a sliding mode.

[0007] A cleaning ring and a driving component for driving the cleaning ring to rotate are installed on the floating disc, a cleaning brush is fixedly embedded in the outer wall of the cleaning ring, the cleaning brush abuts against the inner wall of the filter cartridge, and a plurality of inclined scraping plates are fixedly installed at the bottom of the cleaning ring.

[0008] Preferably, limiting sliding grooves are formed in the outer walls of the liquid guide pipe in a vertical mode, the floating disc is sleeved on the liquid guide pipe through the through hole and is connected with the liquid guide pipe in a sliding mode, limiting protrusions are fixedly embedded in the two side walls of the through hole, and the two limiting protrusions are respectively inserted into the two limiting sliding grooves formed in the liquid guide pipe and are connected with the limiting sliding grooves in a sliding mode.

[0009] Preferably, the driving component includes a central sleeve, which is sleeved on the liquid guide tube and slidably connected to the liquid guide tube. The central sleeve is fixedly connected to the cleaning ring through multiple annularly distributed docking plates. A T-shaped ring is fixedly installed on the top of the central sleeve, and the T-shaped ring is inserted into an annular T-shaped groove opened at the bottom of the floating plate and rotatably connected to the annular T-shaped groove. An external toothed ring is also fixedly sleeved on the central sleeve.

[0010] The drive component also includes a servo motor, which is fixedly mounted on the top of the floating table via a frame. The output end of the servo motor passes through the floating table and is fixedly mounted with a gear, which meshes with an external gear ring.

[0011] Preferably, a connecting pipe is fixedly installed at the bottom of the filter cartridge, and a connecting flange is fixedly installed at the bottom of the connecting pipe.

[0012] Preferably, a curved drain pipe is fixedly installed at the bottom of the central conduit, and the curved drain pipe is connected to the liquid guide pipe. The curved drain pipe passes through the side wall of the connecting pipe and is fixedly installed with a drain valve.

[0013] Preferably, the inclination of the slanted scraper is consistent with the inclination of the filter screen installation.

[0014] Preferably, a balancing valve is installed on the top of the filter cartridge.

[0015] Compared with related technologies, the self-cleaning filter device provided by this utility model has the following beneficial effects:

[0016] The inclined scraper at the bottom of the cleaning ring of this invention has the same inclination as the filter screen installation, which can completely fit the surface of the filter screen. When rotating, it can thoroughly scrape off the impurities attached to the filter screen, solving the problem of residual impurities at the edges. The cleaning brush on the outer ring of the cleaning ring is in close contact with the inner wall of the filter cartridge. During rotation, it can brush off the impurities attached to the inner wall of the filter cartridge, achieving all-round cleaning of "filter screen + filter cartridge inner wall". This avoids the accumulation of impurities affecting the filtration efficiency. The supplied clean water can not only rinse the dirt, but also act as a floating medium to drive the cleaning ring up and down to clean the inner wall of the filter cartridge. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the self-cleaning filter device provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shown is a cross-sectional view of the filter cartridge during the installation of the floating roof and cleaning ring.

[0019] Figure 3 for Figure 2 A schematic cross-sectional view of the filter cartridge shown.

[0020] Figure 4 As Figure 2 the structure diagram of the floating disc is shown in the figure.

[0021] Figure 5 As Figure 2 the structure diagram of the cleaning ring and the driving component is shown in the figure.

[0022] The figure mark: 1, filter cartridge; 11, concave net rack; 12, middle connecting disc; 13, butt joint pipe; 14, connecting flange; 2, filter screen; 3, liquid guide pipe; 3a, liquid discharge port; 3b, limiting sliding slot; 4, curved type blow-off pipe; 41, blow-off valve; 5, floating disc; 5a, annular T-shaped groove; 51, limiting protrusion; 6, cleaning ring; 61, cleaning brush; 62, obliquely made scraper; 7, driving component; 71, middle connecting sleeve; 72, butt joint plate; 73, T-shaped ring; 74, outer gear ring; 75, servo motor; 76, gear. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0024] The specific implementation of the utility model will be described in detail in combination with specific examples.

[0025] Please refer to Figures 1 to 5 , the self-cleaning filter device provided by the utility model embodiment, the self-cleaning filter device includes filter cartridge 1, filter screen 2, liquid guide pipe 3, cleaning ring 6 and driving component 7.

[0026] In the embodiment of the utility model, please refer to Figures 1 to 5 , the butt joint pipe 13 is fixedly installed at the bottom of the filter cartridge 1, and the connecting flange 14 is fixedly installed at the bottom of the butt joint pipe 13, the concave net rack 11 is fixedly arranged at the bottom of the filter cartridge 1, the middle connecting disc 12 is fixedly installed at the middle part of the concave net rack 11, and the filter screen 2 is fixedly installed on the concave net rack 11 in the form of annular distribution:

[0027] The liquid guide pipe 3 is fixedly installed on the middle connecting disc 12, and the top of the liquid guide pipe 3 extends out of the filter cartridge 1, the pipe section of the liquid guide pipe 3 close to the middle connecting disc 12 is provided with a plurality of annularly distributed liquid discharge ports 3a, the curved type blow-off pipe 4 is fixedly installed at the bottom of the middle connecting disc 12, and the curved type blow-off pipe 4 and the liquid guide pipe 3 are in communication with each other, and the curved type blow-off pipe 4 penetrates the side wall of the butt joint pipe 13 and is fixedly installed with the blow-off valve 41.

[0028] It needs to be explained that: the connecting flange 14 is connected with the connecting pipeline of the subsequent processing procedure, and the intercepting valve is installed at the connecting position, the liquid guide pipe 3 outside the filter cartridge 1 is connected with the tee pipe, the remaining branch pipe of the tee pipe is connected with the sewage supply pipe, and the other branch pipe is connected with the clean water supply pipe, and the control valve is installed at the joint, the blowdown valve 41 and the control valve on the clean water supply pipe are closed when the sewage is filtered, so that the sewage enters the liquid guide pipe 3 and is discharged from the liquid outlet 3a, and then enters the lower part of the concave net rack 11 and is filtered by the filter screen 2, and the filtered water is discharged through the connecting pipe 13.

[0029] In the embodiment of the utility model, please refer to Figures 1 to 5 , the liquid guide pipe 3 is sleeved with the slidingly connected floating disc 5, the floating disc 5 is installed with the cleaning ring 6 and the driving part 7 for driving the cleaning ring 6 to rotate, the outer wall of the cleaning ring 6 is fixedly embedded with the cleaning brush 61, and the cleaning brush 61 abuts against the inner wall of the filter cartridge 1, the bottom of the cleaning ring 6 is fixedly installed with multiple obliquely arranged inclined scrapers 62, and the inclination of the inclined scraper 62 is consistent with the inclination of the filter screen 2.

[0030] The driving part 7 includes the middle connecting sleeve 71, the middle connecting sleeve 71 is sleeved on the liquid guide pipe 3 and is slidingly connected with the liquid guide pipe 3, and the middle connecting sleeve 71 is fixedly connected with the cleaning ring 6 through multiple annularly distributed abutting plates 72, the top of the middle connecting sleeve 71 is fixedly installed with the T-shaped ring 73, the T-shaped ring 73 is inserted into the annular T-shaped groove 5a formed in the bottom of the floating disc 5 and is rotatably connected with the annular T-shaped groove 5a, the outer gear ring 74 is further fixedly sleeved on the middle connecting sleeve 71, and the driving part 7 further includes the servo motor 75, the servo motor 75 is fixedly installed on the top of the floating disc 5 through the rack, and the output end of the servo motor 75 penetrates the floating disc 5 and is fixedly installed with the gear 76, and the gear 76 is meshingly connected with the outer gear ring 74.

[0031] It should be noted that when the filter cartridge 1 is cleaned, the intercepting valve, the blowdown valve 41 and the control valve on the sewage supply pipe are closed in advance, the guide liquid pipe 3 is supplied with clean water by the clean water pipe, at this time the water in the filter cartridge 1 rises continuously, so that the floating plate 5 floats up, at the same time the servo motor 75 is opened, so that the servo motor 75 drives the gear 76 to rotate, because the gear 76 is connected with the outer gear ring 74, so the middle sleeve 71 drives the cleaning ring 6 to rotate through the abutting plate 72, so that the filter cartridge 1 can be quickly cleaned under the washing of clean water and the brushing of the cleaning brush 61 on the inner wall of the filter cartridge 1, then the blowdown valve 41 is opened, so that the generated waste residues cooperate with the sewage to enter the curved blowdown pipe 4 from the liquid outlet 3a and are discharged outside the curved blowdown pipe 4, and when the blowdown valve 41 is opened, the water level in the filter cartridge 1 decreases, so that the floating plate 5 decreases, when the inclined scraper 62 falls on the concave net rack 11, the inclined scraper 62 can scrape the residues on the filter screen 2, which are washed into the liquid outlet 3a by the subsequent input of clean water and are discharged outside the blowdown pipe 4.

[0032] In the present application, the inclination of the inclined scraper 62 at the bottom of the cleaning ring 6 is consistent with the installation inclination of the filter screen 2, which can completely fit the surface of the filter screen 2, and can completely scrape off the impurities attached to the filter screen 2 during rotation, solving the problem of residual impurities on the edge, and the cleaning brush 61 on the outer ring of the cleaning ring 6 is closely abutted with the inner wall of the filter cartridge 1, which can brush off the impurities attached to the inner wall of the filter cartridge 1 during rotation, realizing the omnidirectional cleaning of the filter screen and the inner wall of the filter cartridge, avoiding the accumulation of impurities affecting the filtering efficiency, and the supplied clean water can not only flush the dirt but also serve as a floating medium to drive the cleaning ring 6 to float up and down, so as to clean the inner wall of the filter cartridge 1.

[0033] Further, a backflush branch pipe with a small electromagnetic valve can be installed near the blowdown valve 41 of the curved blowdown pipe 4, the backflush branch pipe is communicated with the clean water supply pipe, when the blowdown valve 41 detects abnormal flow (judging as blockage), the blowdown valve 41 is automatically closed, the electromagnetic valve of the backflush branch pipe is opened, the curved blowdown pipe 4 is backflushed by clean water, the large particle impurities causing blockage are flushed into the filter cartridge 1, and then are scraped out by the inclined scraper 62 again, realizing the self-unblocking of blockage.

[0034] Wherein, the outer walls on both sides of the guide liquid pipe 3 are provided with vertically arranged limiting sliding grooves 3b, the floating plate 5 is sleeved on the guide liquid pipe 3 through the through hole and is slidably connected with the guide liquid pipe 3, and the through hole is fixedly embedded with limiting protrusions 51 on the two side walls, the two limiting protrusions 51 are respectively inserted into the two limiting sliding grooves 3b of the guide liquid pipe 3 and are slidably connected with the limiting sliding grooves 3b, so as to avoid the deflection of the floating plate 5 around the guide liquid pipe 3.

[0035] Wherein, the top of the filter cartridge 1 is provided with a balance valve, so that when the floating plate 5 rises with the amount of water in the filter cartridge 1, the floating plate 5 can discharge the air above through the balance valve.

[0036] In addition, the servo motor 75 is wrapped with an IP68 level waterproof sealing shell, and double sealing rings (nitrile rubber + fluorine rubber) are additionally arranged at the penetrating position of the motor output shaft and the floating plate 5 to prevent water mist from penetrating.

[0037] The circuit and the control involved in the utility model are prior art, and will not be described in detail here.

[0038] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion using the utility model specification and the attached drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A self-cleaning filter apparatus, characterized by, The utility model provides a filter cartridge (1), the bottom fixed frame of filter cartridge (1) is provided with the concave net rack (11), and the middle part fixed mounting of concave net rack (11) is provided with the middle joint disc (12), and the fixed mounting of concave net rack (11) is provided with a plurality of annular distribution filter screen (2) on it. The middle joint disc (12) is fixedly installed with a liquid guide pipe (3), and the top of the liquid guide pipe (3) extends out of the filter cartridge (1), and the pipe section of the liquid guide pipe (3) close to the middle joint disc (12) is provided with a plurality of annularly distributed liquid discharge ports (3a), and the liquid guide pipe (3) is sleeved with a floating disc (5) connected slidingly. The floating disc (5) is installed with a cleaning ring (6) and a driving component (7) for driving the rotation of the cleaning ring (6), and the outer wall of the cleaning ring (6) is fixedly embedded with a cleaning brush (61), and the cleaning brush (61) abuts against the inner wall of the filter cartridge (1), and the bottom of the cleaning ring (6) is fixedly installed with a plurality of obliquely arranged inclined scraping plates (62).

2. The self-cleaning filter apparatus of claim 1, wherein, The outer walls of the liquid guide pipe (3) on both sides are provided with vertically arranged limiting sliding grooves (3b), the floating disc (5) is sleeved on the liquid guide pipe (3) through the through hole and is connected slidingly with the liquid guide pipe (3), and the through hole is fixedly embedded with limiting protrusions (51) on the two side walls, and the two limiting protrusions (51) are respectively inserted into the two limiting sliding grooves (3b) of the liquid guide pipe (3) and are connected slidingly with the limiting sliding grooves (3b).

3. The self-cleaning filter apparatus of claim 1, wherein, The driving component (7) comprises a middle joint sleeve (71), the middle joint sleeve (71) is sleeved on the liquid guide pipe (3) and is connected slidingly with the liquid guide pipe (3), and the middle joint sleeve (71) is fixedly connected with the cleaning ring (6) through a plurality of annularly distributed butt plates (72), the top of the middle joint sleeve (71) is fixedly installed with a T-shaped ring (73), and the T-shaped ring (73) is inserted into the annular T-shaped groove (5a) formed at the bottom of the floating disc (5) and is rotatably connected with the annular T-shaped groove (5a), and the middle joint sleeve (71) is further fixedly sleeved with an external gear ring (74); The driving component (7) further comprises a servo motor (75), the servo motor (75) is fixedly installed on the top of the floating disc (5) through a rack, and the output end of the servo motor (75) penetrates the floating disc (5) and is fixedly installed with a gear (76), and the gear (76) is meshingly connected with the external gear ring (74).

4. The self-cleaning filter apparatus of claim 1, wherein, The bottom of the filter cartridge (1) is fixedly installed with a butt pipe (13), and the bottom of the butt pipe (13) is fixedly installed with a connecting flange (14).

5. The self-cleaning filter apparatus of claim 4, wherein, The bottom of the middle joint disc (12) is fixedly installed with a curved blowdown pipe (4), and the curved blowdown pipe (4) is in communication with the liquid guide pipe (3), and the curved blowdown pipe (4) penetrates the side wall of the butt pipe (13) and is fixedly installed with a blowdown valve (41).

6. The self-cleaning filter apparatus of claim 1, wherein, The inclination of the inclined scraping plate (62) is consistent with the inclination of the filter screen (2).

7. The self-cleaning filter apparatus of claim 1, wherein, The top of the filter cartridge (1) is installed with a balance valve.

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