Self-cleaning filter for landfill leachate treatment

Abstract

The utility model relates to a self-cleaning filter for landfill leachate treatment, which comprises a cylinder barrel and a filter element arranged in the cylinder barrel, a water inlet and a water outlet are respectively arranged on the wall of the cylinder barrel, a cylinder cover is arranged at the top of the cylinder barrel, a drain outlet is arranged at the bottom of the cylinder barrel, a blow-down valve is arranged on the drain outlet, and a rotating shaft is rotatably arranged on the cylinder cover. One end of the rotating shaft is in transmission connection with a motor, one end of the rotating shaft extends into the cylinder barrel and is provided with a steel brush abutting against the inner wall of the filter element, a nozzle is installed on the steel brush, a water channel communicated with the nozzle is formed in the rotating shaft, a flange pipe communicated with the water channel is arranged on the cylinder cover, and a water inlet pipe is arranged on the flange pipe. After the filter element is cleaned by the steel brush, the steel brush is flushed through the nozzle, so that impurities are prevented from being attached to the steel brush, meanwhile, the filter element can be further cleaned, the cleaning effect is greatly improved, the requirement for manual maintenance is reduced, and the workload of maintenance personnel is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, concretely relates to a kind of self-cleaning filter for landfill leachate treatment. BACKGROUND

[0002] Leachate (also known as percolate), is formed by the water, pollutants and impurities contained in garbage due to compaction and organic matter decomposition during garbage fermentation process in garbage incineration power plant. Garbage leachate is a kind of high-concentration organic wastewater with complex composition. If it is discharged directly without treatment, it can cause oxygen deficiency, water quality deterioration and eutrophication of surface water, threaten drinking water and industrial and agricultural water sources, and make underground water lose its value. Organic pollutants entering the food chain will directly threaten human health. Therefore, it is essential to treat leachate for environmental protection. The treatment methods of garbage leachate generally include physical and chemical methods and biological methods. Both methods require treatment by certain treatment equipment. However, since garbage leachate contains particles of pollutants, fermentation products and other impurities, if they cannot be effectively filtered, they will block the subsequent leachate treatment equipment and affect the normal operation of the leachate treatment equipment.

[0003] Self-cleaning filter is a device capable of automatically cleaning filter elements, commonly used in leachate treatment. Its types mainly include brush type self-cleaning filter, suction type self-cleaning filter and scraper type self-cleaning filter. Among them, the brush type self-cleaning filter is driven by a motor to rotate the steel brush to clean the inside of the filter core. However, when the steel brush cleans the filter core, some impurities cleaned from the filter core will adhere to the steel brush. At the same time, some impurities in the water will be intercepted on the steel brush during filtration, resulting in the presence of adherents on the steel brush. This not only affects the cleaning effect, but also may cause the filter core to be blocked due to the falling of these adherents, affecting the filtering effect of the filter core. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a self-cleaning filter for garbage leachate treatment.

[0005] The utility model can achieve the purpose by the following technical scheme: a self-cleaning filter for garbage leachate treatment, comprising a cylinder, a filter core installed in the cylinder, a water inlet and a water outlet respectively arranged on the cylinder wall, a cylinder cover arranged on the top of the cylinder, a sewage outlet arranged at the bottom of the cylinder, a sewage valve installed on the sewage outlet, a rotating shaft rotatably arranged on the cylinder cover, an electric motor drivingly connected to one end of the rotating shaft, a steel brush installed on one end of the rotating shaft extending into the cylinder and abutting against the inner wall of the filter core, a nozzle installed on the steel brush, a water channel communicated with the nozzle arranged in the rotating shaft, a flange pipe communicated with the water channel arranged on the cylinder cover, and a water inlet pipe arranged on the flange pipe.

[0006] Preferably, the water inlet and the water outlet are provided with differential pressure sensors.

[0007] Preferably, the rotating shaft is fixedly provided with a support rod, the steel brush is provided with a connecting seat movably connected with the support rod, and the support rod is sleeved with a spring abutting against the connecting seat.

[0008] Preferably, the support rod is threadedly connected with an adjusting nut, and one side of the adjusting nut abuts against the spring.

[0009] Preferably, the support rod is internally provided with a connecting pipe, one end of the connecting pipe is communicated with the water channel, and the other end of the connecting pipe is communicated with the nozzle.

[0010] Preferably, the cylinder is fixedly provided with a support, and the support is rotationally connected with the rotating shaft.

[0011] Preferably, the filter element is provided with a handle.

[0012] The steel brush is provided with the nozzle, the steel brush is flushed through the nozzle after cleaning the filter element, so that the impurities adhered to the steel brush are avoided, the filter element can be further cleaned, the cleaning effect is greatly improved, the demand for manual maintenance is reduced, and the workload of the maintenance personnel is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model makes further explanation to the utility model with the drawings, but the embodiment in the drawings does not constitute any limit to the utility model, and other drawings can be obtained according to the following drawings without the creative labor of the ordinary skill in the art.

[0014] Figure 1 It is a structural schematic view of the self-cleaning filter for treating landfill leachate.

[0015] Figure 2 It is a sectional view of the self-cleaning filter for treating landfill leachate.

[0016] Figure 3 It is a steel brush structure schematic view of the self-cleaning filter for treating landfill leachate.

[0017] Figure 4 It is a sectional view of the self-cleaning filter for treating landfill leachate. Figure 2 It is a sectional view of the self-cleaning filter for treating landfill leachate.

[0018] The numbers shown in the figure represent: 1, cylinder; 2, filter core; 3, water inlet; 4, water outlet; 5, cylinder cover; 6, blowdown outlet; 7, blowdown valve; 8, rotating shaft; 9, motor; 10, steel brush; 11, nozzle; 12, water channel; 13, flange pipe; 14, water inlet pipe; 15, differential pressure sensor; 16, support rod; 17, connecting seat; 18, spring; 19, adjusting nut; 20, connecting pipe; 21, support; 22, handle. DETAILED DESCRIPTION

[0019] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0020] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0021] The technical solutions of the present application will be described clearly and completely in conjunction with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor are within the protection scope of the present application.

[0022] Reference Figures 1 to 4As shown, the structure of the utility model is: a kind of self-cleaning filter for landfill leachate treatment, including cylinder 1, filter core 2 being installed in cylinder 1, the cylinder wall of cylinder 1 is equipped with water inlet 3, water outlet 4 respectively, leachate passes through water inlet 3 and enters cylinder 1, after being filtered by filter core 2 and removing impurities, it is discharged from water outlet 4, the top of cylinder 1 is equipped with cylinder cover 5, bottom is equipped with blowdown port 6, blowdown valve 7 is installed on blowdown port 6, during filtering process, leachate flows from the inside of filter core 2 to outside, therefore, impurity layer is formed on the inner wall of filter core 2, rotatingly equipped with shaft 8 on cylinder cover 5, one end of shaft 8 is drivingly connected with motor 9, one end of shaft 8 extends into cylinder 1 and is equipped with steel brush 10 abutting with the inner wall of filter core 2, rotate shaft 8 by motor 9, drive steel brush 10 to brush the inner wall of filter core 2, and the impurity layer is stripped from filter core 2, then blowdown valve 7 is opened, and leachate is discharged from blowdown port 6 together with the impurities brushed down, in order to prevent impurities from adhering to steel brush 10, nozzle 11 is installed on steel brush 10, water channel 12 is formed in shaft 8 and is communicated with nozzle 11, flange pipe 13 is equipped on cylinder cover 5 and is communicated with water channel 12, water inlet pipe 14 is equipped on flange pipe 13, and water pump is installed on water inlet pipe 14, after sewage in cylinder 1 is discharged, water pump sends flushing water into flange pipe 13, then flushing water is sent to nozzle 11 through water channel 12 formed in shaft 8, and the impurities adhering to steel brush 10 are washed away through nozzle 11, and filter core 2 can be further cleaned, then the impurities washed down are discharged from blowdown port 6 together with flushing water.

[0023] As Figure 1 , Figure 2 shown, water inlet 3 and water outlet 4 are both equipped with differential pressure sensor 15, differential pressure sensor 15 is used to detect the pressure difference between water inlet 3 and water outlet 4, when filter core 2 is blocked, the pressure of water inlet 3 increases, and the pressure of water outlet 4 decreases, when the pressure difference between inlet and outlet reaches the preset value, motor 9 drives steel brush 10 to clean filter core 2.

[0024] As Figure 3 shown, support rod 16 is fixedly arranged on shaft 8, connecting seat 17 movably connected with support rod 16 is arranged on steel brush 10, spring 18 is sleeved on support rod 16 and abuts with connecting seat 17, spring 18 ensures that steel brush 10 can continuously apply appropriate pressure to filter core 2 during cleaning process, so that the impurities and dirt on filter core 2 can be effectively brushed off, and the situation that filter core 2 is not brushed or cleaned uniformly during cleaning process can be avoided.

[0025] As Figure 3As shown, the support rod 16 is screwed with an adjusting nut 19, one side of the adjusting nut 19 abuts against the spring 18, the spring 18 is adjusted by the adjusting nut 19 to adjust the pressure of the steel brush 10 on the filter core 2, and ensure good cleaning effect for different filter media.

[0026] As shown in the drawings, Figure 3 As shown, the support rod 16 is provided with a connecting pipe 20, one end of the connecting pipe 20 is communicated with the water channel 12, and the other end of the connecting pipe 20 is communicated with the nozzle 11, and the connecting pipe 20 can ensure that the nozzle 11 is communicated with the water channel 12 while the steel brush 10 is movably connected with the support rod 16.

[0027] As shown in the drawings, Figure 2 As shown, the cylinder 1 is fixedly provided with a support 21, the support 21 is rotatably connected with the rotating shaft 8, and the support 21 is used to avoid the rotating shaft 8 from shaking when rotating, and prevent the steel brush 10 from being unevenly stressed to reduce the cleaning effect.

[0028] As shown in the drawings, Figure 2 As shown, the filter core 2 is provided with a handle 22, which facilitates the mounting and dismounting of the filter core 2 when the filter core 2 is replaced.

[0029] In specific use, the percolate enters the cylinder 1 through the water inlet 3, and the impurities are filtered out after passing through the filter core 2, and then discharged from the water outlet 4, and the percolate flows out from the inside of the filter core 2 during the filtering process, so that the impurity layer is continuously accumulated on the inner wall of the filter core 2, the rotating shaft 8 is driven to rotate by the motor 9, the steel brush 10 is driven to brush the inner wall of the filter core 2, the impurity layer is peeled off from the filter core 2, and then the sewage valve 7 is opened to discharge the percolate together with the impurities brushed off from the drain 6, after the sewage in the cylinder 1 is discharged, the flushing water is delivered into the flange pipe 13 by the water pump, and then delivered to the nozzle 11 through the water channel 12 formed in the rotating shaft 8, the steel brush 10 is flushed by the nozzle 11 to flush off the impurities attached to the steel brush 10, and the filter core 2 is further cleaned, and then the impurities flushed off are discharged from the drain 6 together with the flushing water.

[0030] The above is further described by means of specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the essence and scope of the present application, and various modifications made by those skilled in the art after reading the specification are within the scope of the present application.

Claims

1. A self-cleaning filter for landfill leachate treatment, comprising a cylinder (1), a filter core (2) installed in the cylinder (1), a water inlet (3) and a water outlet (4) respectively arranged on the cylinder wall of the cylinder (1), a cylinder cover (5) arranged on the top of the cylinder (1) and a blowdown port (6) arranged on the bottom of the cylinder (1), a blowdown valve (7) being installed on the blowdown port (6), characterized in that: The cylinder cover (5) is provided with a rotating shaft (8), one end of the rotating shaft (8) is drivingly connected with a motor (9), one end of the rotating shaft (8) extends into the cylinder (1) and is provided with a steel brush (10) abutting against the inner wall of the filter core (2), the steel brush (10) is provided with a nozzle (11), the rotating shaft (8) is provided with a water channel (12) communicating with the nozzle (11), the cylinder cover (5) is provided with a flange pipe (13) communicating with the water channel (12), and the flange pipe (13) is provided with a water inlet pipe (14). ​ 2. The self-cleaning filter for treating landfill leachate according to claim 1, characterized in that: The water inlet (3) and the water outlet (4) are provided with differential pressure sensors (15).

3. The self-cleaning filter for treating landfill leachate according to claim 1, characterized in that: The rotating shaft (8) is fixedly provided with a supporting rod (16), the steel brush (10) is provided with a connecting seat (17) movably connected with the supporting rod (16), and the supporting rod (16) is provided with a spring (18) abutting against the connecting seat (17).

4. The self-cleaning filter for treating landfill leachate according to claim 3, characterized in that: The supporting rod (16) is threadedly connected with an adjusting nut (19), and one side of the adjusting nut (19) abuts against the spring (18).

5. The self-cleaning filter for the treatment of landfill leachate according to claim 4, characterized in that: The supporting rod (16) is provided with a connecting pipe (20), one end of the connecting pipe (20) communicates with the water channel (12), and the other end of the connecting pipe (20) communicates with the nozzle (11).

6. The self-cleaning filter for treating landfill leachate according to claim 1, characterized in that: The cylinder (1) is fixedly provided with a support (21), and the support (21) is rotatably connected with the rotating shaft (8).

7. The self-cleaning filter for treating landfill leachate according to claim 1, characterized in that: The filter core (2) is provided with a handle (22).

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