Filtering device for wastewater treatment

Abstract

The utility model discloses a filter device for wastewater treatment, which relates to the technical field of microfilters and comprises a filter component consisting of a water tank, a filter cartridge and a spiral feeding sheet, the filter cartridge is rotatably connected to the top of the water tank and extends to two ends of the water tank, the spiral feeding sheet is fixed on the inner side of the filter cartridge, and the filter cartridge is fixed on the filter component. A backwashing assembly is arranged on the inner side of the water tank and the outer side of the filter cartridge, and the backwashing assembly drives water in the water tank to a high position by using the rotating force of the filter cartridge and performs backwashing operation on the filter cartridge. According to the utility model, by arranging the backwashing assembly, the rotating force of the filter cartridge can be utilized to drive filtered water to move upwards, and then the filtered water is utilized to realize backwashing operation on the filter cartridge, so that not only can the filter cartridge be effectively prevented from being blocked, but also the effect of saving water resources is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to microfilter technology field, concretely is a kind of filter device for wastewater treatment. BACKGROUND

[0002] Microfilter is a screen filter that intercepts small suspended solids, with a drum-shaped metal frame, the rotary drum rotates around the horizontal shaft, and the support net and working net woven by stainless steel wire (also can be copper wire or chemical fiber wire) are attached to it. It can be used for raw water filtration in waterworks and removal of algae, water fleas and other plankton, and can also be used for filtration treatment of industrial water, recovery of useful substances in industrial wastewater and final treatment of sewage, etc.

[0003] The existing microfilter, in order to avoid filter cartridge blockage, usually uses a backflush device to spray clean water, so that the clean water backwashes the filter cartridge. This operation will waste a lot of clean water, and provides a filter device for wastewater treatment. SUMMARY

[0004] The utility model discloses a filter device for wastewater treatment to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a filter device for wastewater treatment, comprising a filter assembly composed of a water tank, a filter cartridge and a spiral feeding piece, the filter cartridge is rotatably connected to the top of the water tank and extends to both ends of the water tank, the spiral feeding piece is fixed to the inner side of the filter cartridge, the inner side of the water tank and the outer side of the filter cartridge are provided with a backwashing assembly, the backwashing assembly drives the water inside the water tank to a high place by the rotating force of the filter cartridge and performs backwashing operation on the filter cartridge.

[0006] The backwashing assembly comprises an arc-shaped baffle, a water storage tank, an outer ring cover, a spiral partition piece and a water outlet.

[0007] The arc-shaped baffle is provided with two, and the two arc-shaped baffles are symmetrically fixed to the inner side of the water tank and are attached to the outer side of the filter cartridge.

[0008] The water storage tank is fixed between the two arc-shaped baffles and located at the top position of the arc-shaped baffles, and the water outlet is arranged on the side of the water storage tank close to the filter cartridge.

[0009] The spiral partition piece is provided with a plurality of spiral partition pieces fixed outside the outer ring cover, the outer ring cover is fixed outside the filter cartridge through the spiral partition piece, the end surface of the outer ring cover is attached to one end of the arc-shaped shielding plate, and the spiral partition piece, the outer ring cover, the filter cartridge and the part of the filter cartridge without the filter hole are combined into a water storage space for driving the water in the pool to move upwards, when the spiral partition piece rotates above the water storage tank, the water stored in the spiral partition piece flows into the inside of the water storage tank, and the water flow is discharged from the water outlet to realize the backwashing operation of the filter cartridge.

[0010] As a further scheme of the utility model: the filter cartridge is composed of a rotating drum and a filter part, the filter part is fixed between the two rotating drums, the filter part is rotatably connected to the pool, the water storage tank is located inside the pool and is aligned with the filter part.

[0011] As a further scheme of the utility model: the filter assembly further comprises a linkage shaft, a supporting roller and a belt pulley.

[0012] The two linkage shafts are rotatably connected to the inside of the pool and are distributed on both sides of the filter cartridge, the two ends of the linkage shafts penetrate to the outside of the pool and are fixedly connected with the supporting rollers, and the supporting rollers are attached to the side surface of the rotating drum.

[0013] The belt pulley is fixedly connected with one supporting roller through a connecting shaft.

[0014] As a further scheme of the utility model: the two sides of the two ends of the pool are fixedly connected with a baffle, and the height of the baffle and the height of the two ends of the pool are greater than the height of the two sides of the pool.

[0015] As a further scheme of the utility model: the lowest part of the spiral partition piece is lower than the top of the two sides of the pool, the height of the linkage shaft is higher than the top of the two sides of the pool, and the lowest part of the filter cartridge is higher than the top of the two sides of the pool.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] By setting the backwashing assembly, the filtered water can be driven to move upwards by the rotating force of the filter cartridge, and then the backwashing operation of the filter cartridge is realized by using the filtered water, which can effectively avoid the blockage of the filter cartridge and save water resources. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a structural schematic view of the utility model;

[0019] Fig. 2 It is an internal structure schematic view of the pool of the utility model;

[0020] Fig. 3 The structural distribution diagram of the filter cartridge, the outer ring cover and the spiral separation piece.

[0021] In the figure: 1, filter assembly; 101, water tank; 102, filter cartridge; 103, spiral feeding piece; 104, linkage shaft; 105, supporting roller; 106, belt pulley; 107, baffle; 1021, rotating drum; 1022, filter part; 2, backwashing assembly; 201, arc-shaped shielding plate; 202, water storage tank; 203, outer ring cover; 204, spiral separation piece; 205, water outlet. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figs. 1-3 In the embodiments of the present application, a filter device for wastewater treatment comprises a filter assembly 1 composed of a water tank 101, a filter cartridge 102 and a spiral feeding piece 103. The filter cartridge 102 is rotatably connected to the top of the water tank 101 and extends to both ends of the water tank 101. The spiral feeding piece 103 is fixed to the inner side of the filter cartridge 102. The inner side of the water tank 101 and the outer side of the filter cartridge 102 are provided with a backwashing assembly 2. The backwashing assembly 2 drives the water inside the water tank 101 to a high place by the rotating force of the filter cartridge 102 and performs backwashing operation on the filter cartridge 102.

[0024] The backwashing assembly 2 comprises arc-shaped shielding plates 201, a water storage tank 202, an outer ring cover 203, a spiral separation piece 204 and a water outlet 205.

[0025] The two arc-shaped shielding plates 201 are symmetrically fixed to the inner side of the water tank 101 and are attached to the outer side of the filter cartridge 102.

[0026] The water storage tank 202 is fixed to the middle of the two arc-shaped shielding plates 201 and is located at the top position of the arc-shaped shielding plates 201. The water outlet 205 is formed on the side of the water storage tank 202 close to the filter cartridge 102.

[0027] The plurality of spiral partition pieces 204 are fixed outside the outer ring cover 203, the outer ring cover 203 is fixed outside the filter cartridge 102 through the spiral partition pieces 204, the end surface of the outer ring cover 203 is attached to one end of the arc-shaped shielding plate 201, and the spiral partition piece 204, the outer ring cover 203, the filter cartridge 102 and the part of the filter cartridge 102 without a filter hole are combined into a water storage space, which is used to drive the water in the water tank 101 to move upwards, when the spiral partition piece 204 rotates above the water storage tank 202, the water contained therein flows into the inside of the water storage tank 202, so that the water flows out of the water outlet 205 to realize the backwashing operation of the filter cartridge 102;

[0028] The filter cartridge 102 is composed of a rotating drum 1021 and a filter part 1022, the filter part 1022 is fixed between the two rotating drums 1021, the filter part 1022 is rotationally connected with the water tank 101, the water storage tank 202 is located in the water tank 101 and is aligned with the filter part 1022, and the outer ring cover 203 and the spiral partition piece 204 are fixed outside the rotating drum 1021 and inside the water tank 101;

[0029] The filter assembly 1 further comprises a linkage shaft 104, a supporting roller 105 and a belt pulley 106;

[0030] The two linkage shafts 104 are rotationally connected inside the water tank 101 and are distributed on both sides of the filter cartridge 102, the linkage shaft 104 penetrates to the outside of the water tank 101 at both ends and is fixedly connected with the supporting roller 105, and the supporting roller 105 is attached to the side surface of the rotating drum 1021;

[0031] The belt pulley 106 is fixedly connected with one supporting roller 105 through a connecting shaft.

[0032] In this embodiment, it is necessary to supplement that: the belt pulley 106 is drivingly connected with an external motor through a belt and another belt pulley, the belt pulley 106 is driven to rotate by the external motor, the two supporting rollers 105 are driven to rotate synchronously by the belt pulley, the supporting roller 105 drives the filter cartridge 102 to rotate under the action of friction, and the other two supporting rollers 105 are driven to rotate;

[0033] At the same time, the sewage to be filtered is transported into the filter cartridge 102 from the inlet end of the filter cartridge 102, the sewage is filtered through the filter part 1022, and the solid impurities filtered out are pushed by the rotating spiral feeding piece 103 to move to the outlet end of the filter cartridge, the filtered water falls into the water tank 101 and flows out from both sides of the water tank 101 to the next process after accumulating to a certain height in the water tank 101, so that the filtration operation of the sewage is realized;

[0034] In this process, the rotating filter drum 102 drives the outer ring cover 203 and the spiral partition plate 204 to rotate synchronously, and when the spiral partition plate 204 rotates to the inside of the pool 101, the water in the pool 101 flows into the gap space between the spiral partition plate 204, the outer ring cover 203 and the rotating drum 1021. When the spiral partition plate 204 rotates upward from the bottom, the downward end of the spiral partition plate 204 is shielded by the arc-shaped shielding plate 201 at this time, so that the water between the spiral partition plate 204, the outer ring cover 203 and the rotating drum 1021 can be driven to move upward.

[0035] When the downward end of the spiral partition plate 204 rotates above the arc-shaped shielding plate 201, the water in the space corresponding to the spiral partition plate 204 flows into the water storage tank 202, and then flows out of the water outlet 205 to spray onto the surface of the filter part 1022 of the filter drum 102, so as to realize that the solid impurities adhering to the inner wall of the filter part 1022 are washed off, thereby avoiding the blockage of the filter part 1022 (it needs to be noted that by controlling the rotating speed of the filter drum 102, the water flow driven by the spiral partition plate 204 is greater than or equal to the water flow of the water outlet 205, so that the stable operation of backwashing can be ensured);

[0036] Through the cooperation of the above-mentioned parts, the filtered water can be driven upward by the rotating force of the filter drum 102, and then the backwashing operation of the filter drum 102 is realized by using the filtered water, thereby saving water resources.

[0037] Please refer to Figs. 1-3 The two sides of the pool 101 are fixedly connected with the baffles 107, and the height of the baffles 107 and the height of the two ends of the pool 101 are greater than the height of the two sides of the pool 101.

[0038] The lowest horizontal height of the spiral partition plate 204 is lower than the horizontal height of the top of the two sides of the pool 101, the horizontal height of the linkage shaft 104 is higher than the horizontal height of the top of the two sides of the pool 101, and the horizontal height of the bottom of the filter drum 102 is higher than the horizontal height of the top of the two sides of the pool 101.

[0039] In this embodiment, the baffles 107 can prevent the water from flowing to the two sides of the pool 101, so as to ensure the stability of the water flow direction;

[0040] Finally, the water level in the pool 101 is flush with the height of the two sides of the pool 101, which does not interfere with the operation of the linkage shaft 104 and the filter drum 102.

[0041] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A filtering device for wastewater treatment, comprising a filtering assembly (1) composed of a water tank (101), a filtering cylinder (102) and a spiral feeding piece (103), the filtering cylinder (102) being rotatably connected to the top of the water tank (101) and extending to both ends of the water tank (101), and the spiral feeding piece (103) being fixed to the inner side of the filtering cylinder (102), characterized in that, The inside of the pool (101) and the outside of the filter cylinder (102) are provided with a backwashing assembly (2), which uses the rotating force of the filter cylinder (102) to drive the water inside the pool (101) to a high place and perform backwashing operation on the filter cylinder (102); The backwashing assembly (2) comprises arc-shaped shielding plates (201), a water storage tank (202), an outer ring cover (203), spiral partition plates (204) and a water outlet (205); The two arc-shaped shielding plates (201) are symmetrically fixed to the inside of the pool (101) and are attached to the outside of the filter cylinder (102); The water storage tank (202) is fixed in the middle of the two arc-shaped shielding plates (201) and is located at the top of the arc-shaped shielding plates (201), and the water outlet (205) is formed on one side of the water storage tank (202) close to the filter cylinder (102); The spiral partition plates (204) are fixed to the outside of the outer ring cover (203), and the outer ring cover (203) is fixed to the outside of the filter cylinder (102) through the spiral partition plates (204), the end face of the outer ring cover (203) is attached to one end of the arc-shaped shielding plate (201), and the spiral partition plates (204), the outer ring cover (203), the filter cylinder (102) and the part of the filter cylinder (102) without filter holes are combined to form a water storage space, which is used to drive the water inside the pool (101) to move upwards, when the spiral partition plates (204) rotate above the water storage tank (202), the water stored therein flows into the inside of the water storage tank (202), so that the water flows out of the water outlet (205) to realize backwashing operation on the filter cylinder (102).

2. The filter device for wastewater treatment according to claim 1, characterized by The filter cylinder (102) is composed of rotating cylinders (1021) and a filter part (1022), the filter part (1022) is fixed in the middle of the two rotating cylinders (1021), the filter part (1022) is rotatably connected with the pool (101), the water storage tank (202) is aligned with the filter part (1022) and is located inside the pool (101), and the outer ring cover (203) and the spiral partition plates (204) are fixed to the outside of the rotating cylinders (1021) and are located inside the pool (101).

3. The filter device for wastewater treatment according to claim 2, characterized by The filter assembly (1) further comprises linkage shafts (104), support rollers (105) and belt pulleys (106); The two linkage shafts (104) are rotatably connected to the inside of the pool (101) and are distributed on both sides of the filter cylinder (102), the linkage shafts (104) penetrate into the outside of the pool (101) and are fixedly connected with the support rollers (105), and the support rollers (105) are attached to the side of the rotating cylinder (1021); The belt pulley (106) is fixedly connected with one support roller (105) through a connecting shaft.

4. The filter device for wastewater treatment according to claim 1, characterized by The two sides of the pool (101) are fixedly connected with shielding plates (107), and the height of the shielding plates (107) and the height of the two ends of the pool (101) are greater than the height of the two sides of the pool (101).

5. The filter device for wastewater treatment according to claim 3, characterized by The lowest horizontal height of the spiral partition piece (204) is lower than the horizontal height of the top of the two sides of the pool (101), the horizontal height of the linkage shaft (104) is higher than the horizontal height of the top of the two sides of the pool (101), and the lowest horizontal height of the filter cartridge (102) is higher than the horizontal height of the top of the two sides of the pool (101).

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