A microfilter for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a microfilter for sewage treatment, including a chassis, a filter cartridge is arranged inside the chassis, a backwashing mechanism is distributed on the chassis, and the backwashing mechanism includes an oblique side flushing mechanism and a sliding flushing mechanism. When the backwashing mechanism of the utility model is in use, a water pump is used to extract filtered water after cleaning from the chassis, and then it is sprayed out through a high-pressure spray valve 1 to flush the residual waste residue on the filter cartridge. At this time, the rodless cylinder and the high-pressure spray valve 2 are synchronously started, and the rodless cylinder is used to drive the high-pressure spray valve 2 to move along the central axis of the filter cartridge and spray the filter cartridge with high pressure. The high-pressure water flow sprayed by the high-pressure spray valve 2 penetrates the filter cartridge and then acts on the filter residue collection tank, and the filter residue is flushed twice, which is helpful to clean the residue on the filter cartridge and the filter residue remaining on the bottom wall of the filter residue collection tank, and then discharged outward through the sewage pipe, thereby improving the efficiency of residue cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a microfilter for sewage treatment. Background Art

[0002] Microfiltration is a kind of equipment commonly used in sewage treatment. It can effectively remove suspended matter and some microorganisms in water. This equipment usually uses porous membrane as the filter medium to intercept solid particles in water through physical screening, thereby achieving solid-liquid separation. In the field of sewage treatment, microfiltration can be used for primary treatment to remove larger solid impurities, or as part of deep treatment to further purify water quality.

[0003] In the Chinese utility model patent with the announcement number CN217829151U, an automatic backwashing internal water inlet microfilter is disclosed, which belongs to the technical field of microfilters, and mainly solves the problem that the existing internal water inlet microfilters gather and move to the outlet of one end of the drum through the action of the internal spiral plate during operation, and fall into the material trough, but the stains blocked in the gaps of the drum mesh are difficult to be scraped and cleaned by the spiral plate, so that the flushing quality of the internal water inlet microfilter is limited. With respect to the above-mentioned related technologies, the inventor believes that there are the following defects: although in the above-mentioned prior art, by providing an impact ball, a pull rope and a rotating rod, the rotating rod rotates, indirectly driving the drum and the pull rope to rotate together, so that the impact ball forms an impact effect on the inner wall of the drum, and then the solidified stains adhered to the inner wall of the drum are cracked, but in the actual use of the above-mentioned microfilter, since the impact ball, the pull rope and the rotating rod are all arranged inside the drum, when the treated sewage contains ribbons, the impurities will be entangled due to the pull rope.

[0004] The existing backwashing microfilter for sewage treatment usually has a flushing structure fixed on the top or obliquely above the drum, and the residue flushed down is then discharged outward through a collecting tank. The residue is discharged outward only by the force of the backwashing water once, resulting in low efficiency in residue cleaning, which affects the use of the microfilter. Therefore, a microfilter for sewage treatment is needed, which can optimize the backwashing structure of the microfilter to ensure efficient cleaning of the residue in the microfilter and improve the practicality of the overall microfilter for sewage treatment. Utility Model Content

[0005] In order to solve the technical problem that the existing backwashing microfilter for sewage treatment usually has a flushing structure fixed on the top or obliquely above the drum, and the residue flushed is discharged outward through a collecting trough, and the residue is discharged outward only by the force of the backwashing water once, resulting in low efficiency of residue cleaning, the utility model provides a microfilter for sewage treatment.

[0006] The utility model is implemented by the following technical scheme: a microfilter for sewage treatment, comprising a chassis, a water inlet and a water outlet, a filter cartridge is arranged inside the chassis, a filter residue collection tank located in the filter cartridge cavity is obliquely installed on the inner cavity side wall of the chassis through a bracket, a backwashing mechanism for cleaning and washing the residual filter residue on the filter cartridge is distributed on the chassis, the backwashing mechanism comprises an oblique side washing mechanism and a sliding washing mechanism, the oblique side washing mechanism comprises a water pump, a connecting pipe, a drain pipe and a high-pressure spray valve 1, the sliding washing mechanism comprises a rodless cylinder, a sliding seat, a connecting block, a bellows and a high-pressure spray valve 2;

[0007] Among them, the drain pipe is located in the inner cavity of the chassis and one end is closed, the rodless cylinder is installed on the inner cavity side wall of the chassis and is located directly above the filter cartridge, the slide is slidably installed on the top of the rodless cylinder, the connecting block is installed on the top of the slide, and multiple groups of high-pressure spray valves 2 are symmetrically installed at the bottom of the connecting block. One end of the bellows is connected to the middle part of the drain pipe, and the other end thereof passes through the connecting block and is connected to the high-pressure spray valve 2 through a conduit.

[0008] Preferably, the water pump is installed at the rear end of the chassis through a support plate, and the input end of the water pump is connected to the bottom wall of the inner cavity of the chassis through a branch pipe, the connecting pipe is connected to the output end of the water pump, and the connecting pipe is connected to the other end of the drain pipe.

[0009] Preferably, a sewage pipe and a water inlet are installed at the front end of the chassis, one end of the sewage pipe passes through the front end of the filter residue collecting tank, and a water outlet is installed at the rear end of the chassis.

[0010] Preferably, a plurality of sets of fixing blocks are distributedly installed on the inner cavity side wall of the chassis, and the fixing blocks are slidably connected to the outer periphery of the filter cartridge. A motor is installed at the front end of the chassis, and the output end of the motor passes through the front end of the chassis.

[0011] Preferably, a connecting cylinder is installed at the front end of the filter cylinder, and teeth are annularly distributed on the outer circumference of the connecting cylinder. The output end of the motor drives the connecting cylinder to rotate through a tooth chain.

[0012] Preferably, legs are installed at the bottom of the chassis.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is provided with a backwashing mechanism composed of an oblique side flushing mechanism and a sliding flushing mechanism. When in use, a water pump is used to draw filtered water after cleaning from a chassis, and then sprayed out through a high-pressure spray valve 1 to flush the residual waste residue on the filter cartridge. At this time, the rodless cylinder and the high-pressure spray valve 2 are synchronously started, and the rodless cylinder is used to drive the high-pressure spray valve 2 to move along the central axis of the filter cartridge and perform high-pressure spraying on the filter cartridge. Since the oblique side flushing mechanism has preliminarily cleaned the residue on the surface of the filter cartridge, the high-pressure water flow sprayed by the high-pressure spray valve 2 penetrates the filter cartridge and then acts on the filter residue collecting tank, and performs secondary flushing on the filter residue, which helps to clean the residue on the filter cartridge and the filter residue remaining on the bottom wall of the filter residue collecting tank, and then discharges it to the outside through the sewage pipe, thereby improving the efficiency of residue cleaning and improving the practicality of the overall microfiltration machine for sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall structural diagram provided by the utility model;

[0016] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the backwashing mechanism of the utility model;

[0018] Figure 4 for Figure 2 A is an enlarged structural diagram;

[0019] Figure 5 for Figure 3 The enlarged structural diagram at B in FIG.

[0020] In the figure: 1. Chassis; 2. Water inlet; 3. Filter cartridge; 4. Water outlet; 5. Water pump; 6. Fixing block; 7. Connecting pipe; 8. Drain pipe; 9. High-pressure spray valve 1; 10. Rodless cylinder; 11. Sliding seat; 12. Connecting block; 13. Bellows; 14. High-pressure spray valve 2; 15. Filter residue collecting tank; 16. Drain pipe; 17. Motor; 18. Connecting pipe; 19. Support leg. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0022] See also Figure 1 - Figure 5A microfilter for sewage treatment in this embodiment includes a chassis 1, a water inlet 2 and a water outlet 4. A support leg 19 is installed at the bottom of the chassis 1. A filter cartridge 3 is arranged inside the chassis 1. A plurality of fixed blocks 6 are distributed and installed on the side wall of the inner cavity of the chassis 1, and the fixed blocks 6 are slidably connected with the outer periphery of the filter cartridge 3. A motor 17 is installed at the front end of the chassis 1, and the output end of the motor 17 runs through the front end of the chassis 1. A connecting cylinder 18 is installed at the front end of the filter cartridge 3. The outer periphery of the connecting cylinder 18 is annularly distributed with teeth. The output end of the motor 17 drives the connecting cylinder 18 to rotate through a tooth chain; the fixed block 6 is used to support and stabilize the filter cartridge 3. During the sewage treatment process, the motor 17 is started to drive the connecting cylinder 18 to rotate through the cooperation of the tooth chain and the teeth, thereby driving the filter cartridge 3 to rotate;

[0023] Furthermore, a filter residue collection tank 15 located in the cylinder cavity of the filter cartridge 3 is obliquely installed on the inner cavity side wall of the chassis 1 through a bracket, and a backwashing mechanism for cleaning and washing the residual filter residue on the filter cartridge 3 is distributed on the chassis 1. A sewage pipe 16 and a water inlet 2 are installed at the front end of the chassis 1. One end of the sewage pipe 16 passes through the front end of the filter residue collection tank 15, and a water outlet 4 is installed at the rear end of the chassis 1; the sewage to be filtered and treated enters the inner cavity of the filter cartridge 3 through the water inlet 2, and the filtered water flows into the inner cavity of the chassis 1, and then the clean water is transported outward through the water outlet 4;

[0024] Further, the backwashing mechanism includes an oblique side flushing mechanism and a sliding flushing mechanism, and the oblique side flushing mechanism is composed of a water pump 5, a connecting pipe 7, a drain pipe 8 and a high-pressure spray valve 9, wherein the water pump 5 is installed at the rear end of the chassis 1 through a support plate, and the input end of the water pump 5 is connected to the bottom wall of the inner cavity of the chassis 1 through a branch pipe, one end of the drain pipe 8 is closed and located in the inner cavity of the chassis 1, the connecting pipe 7 is connected to the output end of the water pump 5, and the other end of the connecting pipe 7 is connected to the drain pipe 8;

[0025] Furthermore, while the filter cartridge 3 rotates and filters, the filtered water is extracted from the chassis 1 through the branch pipe by the water pump 5, and then transported to the inside of the drain pipe 8 through the connecting pipe 7, and finally sprayed out through the high-pressure spray valve 9. The filtered water is directed to the filter cartridge 3 for high-pressure spraying by multiple sets of high-pressure spray valves 9, and the residual waste residue on the filter cartridge 3 is washed by the impact force of the filtered water spraying, so as to prevent the residue and other impurities from accumulating on the inner surface of the filter cartridge 3 and affecting the filtering process;

[0026] Further, the sliding flushing mechanism is composed of a rodless cylinder 10, a slide 11, a connecting block 12, a bellows 13 and a high-pressure spray valve 14, wherein the rodless cylinder 10 is installed on the inner cavity side wall of the chassis 1 and is located directly above the filter cartridge 3, the slide 11 is slidably installed on the top of the rodless cylinder 10, the connecting block 12 is installed on the top of the slide 11, and multiple groups of high-pressure spray valves 14 are symmetrically installed at the bottom of the connecting block 12, one end of the bellows 13 is connected to the middle of the drain pipe 8, and the other end thereof passes through the connecting block 12 and is connected to the high-pressure spray valve 14 through a conduit;

[0027] Furthermore, the residue after flushing by the high-pressure spray valve 19 falls into the filter residue collection tank 15 for collection, and the filter residue collection tank 15 is installed at an angle and discharged outwardly through the sewage pipe 16. At this time, the rodless cylinder 10 and the high-pressure spray valve 2 14 are started synchronously, and the rodless cylinder 10 drives the slide seat 11 to perform a cyclic reciprocating linear motion, thereby driving the connecting block 12 and the high-pressure spray valve 2 14 to perform a reciprocating linear motion on the top of the filter cylinder 3. The bellows 13 automatically extends or contracts with the movement of the connecting block 12 to meet the use, so that the high-pressure spray valve 2 14 can move along the central axis of the filter cylinder 3 and perform high-pressure spraying to the filter cylinder 3. Since the oblique side flushing mechanism has preliminarily cleaned the residue on the surface of the filter cylinder 3, the high-pressure water flow sprayed by the high-pressure spray valve 2 14 penetrates the filter cylinder 3 and then acts on the filter residue collection tank 15, and performs a secondary flushing on the filter residue, which helps to clean the residue on the filter cylinder 3 and the filter residue remaining on the bottom wall of the filter residue collection tank 15, thereby improving the efficiency of residue cleaning and improving the practicality of the overall microfiltration machine for sewage treatment.

[0028] Working principle: The sewage to be filtered enters the inner cavity of the filter cartridge 3 through the water inlet 2, and the filtered water flows into the inner cavity of the chassis 1, and then transports clean water outward through the water outlet 4. While the filter cartridge 3 rotates and filters, the filtered water is extracted from the chassis 1 through the branch pipe by the water pump 5, and then sprayed out through the high-pressure spray valve 19 to rinse the residual waste residue on the filter cartridge 3. The residue after washing falls into the inclined filter residue collection tank 15 for collection, and then discharged outward through the sewage pipe 16. At this time, the rodless cylinder 10 and the high-pressure spray valve 11 are started synchronously. 4. The rodless cylinder 10 is used to cooperate with the slide seat 11 and the connecting block 12 to drive the high-pressure spray valve 14 to move along the central axis of the filter cartridge 3 and perform high-pressure spraying on the filter cartridge 3. Since the oblique side flushing mechanism has preliminarily cleaned the residue on the surface of the filter cartridge 3, the high-pressure water flow sprayed by the high-pressure spray valve 14 penetrates the filter cartridge 3 and then acts on the filter residue collecting tank 15, and performs secondary flushing on the filter residue, which helps to clean the residue on the filter cartridge 3 and the filter residue remaining on the bottom wall of the filter residue collecting tank 15, improve the efficiency of residue cleaning, and improve the practicality of the overall microfiltration machine for sewage treatment.

[0029] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A microfilter for sewage treatment, comprising a housing (1), a water inlet (2) and a water outlet (4), characterized in that: A filter cartridge (3) is arranged inside the chassis (1), and a filter residue collection tank (15) located in the cartridge cavity of the filter cartridge (3) is obliquely mounted on the inner cavity side wall of the chassis (1) through a bracket. A backwashing mechanism for cleaning and flushing the residual filter residue on the filter cartridge (3) is distributed on the chassis (1), and the backwashing mechanism comprises an oblique side flushing mechanism and a sliding flushing mechanism. The oblique side flushing mechanism comprises a water pump (5), a connecting pipe (7), a drain pipe (8) and a high-pressure spray valve (9). The sliding flushing mechanism comprises a rodless cylinder (10), a sliding seat (11), a connecting block (12), a bellows (13) and a high-pressure spray valve (14). The drain pipe (8) is located in the inner cavity of the chassis (1) and is closed at one end; the rodless cylinder (10) is installed on the inner cavity side wall of the chassis (1) and is located directly above the filter cartridge (3); the slide seat (11) is slidably installed on the top of the rodless cylinder (10); the connecting block (12) is installed on the top of the slide seat (11); a plurality of groups of high-pressure spray valves (14) are symmetrically installed at the bottom of the connecting block (12); one end of the bellows (13) is connected to the middle of the drain pipe (8); and the other end thereof passes through the connecting block (12) and is connected to the high-pressure spray valve (14) via a conduit.

2. A microfilter for sewage treatment according to claim 1, characterized in that: The water pump (5) is installed at the rear end of the chassis (1) through a support plate, and the input end of the water pump (5) is connected to the bottom wall of the inner cavity of the chassis (1) through a branch pipe. The connecting pipe (7) is connected to the output end of the water pump (5), and the connecting pipe (7) is connected to the other end of the drainage pipe (8).

3. A microfilter for sewage treatment according to claim 1, characterized in that: A sewage pipe (16) and a water inlet (2) are installed at the front end of the chassis (1), one end of the sewage pipe (16) passes through the front end of the filter residue collection tank (15), and a water outlet (4) is installed at the rear end of the chassis (1).

4. A microfilter for sewage treatment according to claim 1, characterized in that: A plurality of groups of fixing blocks (6) are distributed and installed on the inner cavity side wall of the chassis (1), and the fixing blocks (6) are slidably connected to the outer periphery of the filter cartridge (3). A motor (17) is installed at the front end of the chassis (1), and the output end of the motor (17) passes through the front end of the chassis (1).

5. A microfilter for sewage treatment according to claim 4, characterized in that: A connecting cylinder (18) is installed at the front end of the filter cylinder (3), and teeth are annularly distributed on the outer circumference of the connecting cylinder (18). The output end of the motor (17) drives the connecting cylinder (18) to rotate through a toothed chain.

6. A microfilter for sewage treatment according to claim 1, characterized in that: The bottom of the chassis (1) is provided with supporting legs (19).

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