Biological filter for rural domestic sewage treatment

Abstract

The utility model relates to the technical field of biological filters, in particular to a biological filter for rural domestic sewage treatment, which comprises a biological filter body, a filter plate is arranged in the biological filter body, and the inside of the biological filter body is divided into a filter cavity and a water outlet cavity from top to bottom by the filter plate. A coarse filter material layer and a fine filter material layer which are used for treating domestic sewage are arranged in the filter cavity. According to the utility model, through the mutual matching of the driving rod, the driving ring and the rotating rod in the angle adjusting assembly, the setting angle of the scraping plate in a vertical plane can be adjusted, so that the use requirements under different conditions can be met, and the obliquely arranged scraping plate not only can enlarge the loosening height of a filter material, but also can improve the filtering efficiency. The scraping plate can be vertically arranged, so that the arrangement of the filter material layer is not affected while the scraping plate vertically ascends conveniently, and a better loosening effect is achieved by matching with the moving assembly and the lifting assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of biological filters, in particular to a biological filter for rural domestic sewage treatment. Background Art

[0002] Biofilter is a biological treatment structure made of crushed stone or plastic product fillers. The sewage contacts the gaps between the microbial membranes growing on the surface of the fillers to purify the sewage. Biofilter is a sewage treatment process formed on the basis of biological contact oxidation process combined with filtration process. It relies on the physical filtration effect of the fillers filled in the reactor and the biochemical effects of aerobic oxidation, anoxic denitrification and other biofilms attached to the fillers to remove pollutants in the sewage. According to different treatment purposes, it can be divided into carbon oxidation aerated biological filter, nitrification aerated biological filter and denitrification biological filter.

[0003] Rural domestic sewage refers to sewage generated by rural residents’ daily activities, mainly including flushing toilets, washing and kitchen cooking drainage, etc. Toilet feces: contains high concentrations of organic matter, high concentrations of nitrogen and phosphorus, pathogenic microorganisms, and residual drugs; kitchen sewage: contains organic matter such as rice bran and vegetable scraps, and high oil content; washing sewage: contains elements such as nitrogen and phosphorus, which will cause eutrophication of water bodies; bathing sewage: contains human dirt, synthetic detergents, E. coli, etc.

[0004] The filter layer in the biological filter plays two roles. One is to act as a carrier of microorganisms and utilize microorganisms to carry out biochemical reactions. The other is to act as a filter medium to intercept suspended solids and newly formed biological solids in the incoming water. Since rural domestic sewage contains more nutrients, more biological solids will be produced in the filter layer. These biological solids will accelerate the adhesion between filter particles, thereby accelerating the replacement speed of filter media in the filter layer. For this reason, a biological filter for rural domestic sewage treatment is proposed. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a biological filter for rural domestic sewage treatment, which solves the technical problem of frequent replacement speed of filter materials in the biological filter for rural domestic sewage treatment.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a biofilter for rural domestic sewage treatment, comprising a biofilter body, a filter plate is arranged in the biofilter body, the filter plate divides the interior of the biofilter body into a filter chamber and a water outlet chamber from top to bottom, a coarse filter layer and a fine filter layer for treating domestic sewage are arranged in the filter chamber, a scraper for loosening and adjusting the coarse filter layer and the fine filter layer is arranged in the biofilter body, and a moving component for controlling the reciprocating movement of the scraper is arranged on the biofilter body;

[0007] The moving component includes a shell body arranged on the biofilter body and a driving motor arranged on the shell body, a screw rod is rotatably arranged in the shell body, the output end of the driving motor is fixedly connected to the screw rod, an L-shaped threaded seat is arranged on the screw rod through a threaded connection sleeve, a lifting column is slidably arranged on the L-shaped threaded seat, a connecting block is arranged on the scraper, the connecting block is rotatably arranged with the lower end of the lifting column, and a lifting component for controlling the lifting height of the lifting column is also arranged on the L-shaped threaded seat.

[0008] Preferably, the lifting assembly comprises a first electric telescopic rod arranged on an L-shaped threaded seat, a lifting plate is provided at the telescopic end of the first electric telescopic rod, and the lifting column is fixedly connected to the lifting plate.

[0009] Preferably, the lifting plate is provided with an angle adjustment component for adjusting the inclination angle of the scraper, the angle adjustment component comprises an adjustment shell provided on the lifting plate and a second electric telescopic rod provided on the adjustment shell, a sliding plate is slidably provided in the adjustment shell, the telescopic end of the second electric telescopic rod is fixedly connected to the sliding plate, a driving rod is slidably provided in the lifting column, and the upper end of the driving rod is fixedly connected to the sliding plate;

[0010] A driving ring is also slidably provided on the lifting column, and the lower end of the driving rod is fixedly connected to the driving ring through a connecting column, and a rectangular groove is opened on the lifting column to facilitate the connecting column to slide up and down. A rotating rod is also rotatably provided on the driving ring, and a fixed shaft is also provided on the scraper, and the end of the rotating rod is rotatably set with the fixed shaft.

[0011] Preferably, the housing is provided with a rectangular through slot for facilitating the sliding of the lifting column and the first electric telescopic rod.

[0012] Preferably, the rotation angle of the scraper is between 0° and 90°.

[0013] Preferably, the L-shaped threaded seat is also provided with a guide plate used in conjunction with the lifting column.

[0014] Preferably, the upper cross-section of the lifting column is rectangular, and the lower cross-section of the lifting column is circular.

[0015] By means of the above technical solution, the utility model provides a biological filter for rural domestic sewage treatment, which has at least the following beneficial effects:

[0016] 1. The utility model can effectively drive the scraper to move inside the biofilter tank through the cooperation of the moving component and the lifting component, so that the scraper can loosen the filter materials of different coarseness and fineness, thereby effectively preventing the sticking between the filter materials, extending the service life of the filter materials, and eliminating the need to frequently replace the filter materials in the biofilter tank.

[0017] 2. The utility model can adjust the setting angle of the scraper in the vertical plane through the mutual cooperation of the driving rod, the driving ring and the rotating rod in the angle adjustment component, so as to meet the use requirements in different situations. The inclined scraper can not only expand the loosening height of the filter material, but also make the scraper vertically set, thereby facilitating the vertical rise of the scraper without affecting the arrangement of the filter material layer. Cooperating with the moving component and the lifting component, a better loosening effect can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the internal structure of the biological filter of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the mobile component of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the housing of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the lifting assembly of the utility model;

[0023] Figure 5 This is a schematic diagram of the vertical structure of the scraper of the utility model;

[0024] Figure 6 This is a schematic diagram of the drive ring structure of the utility model.

[0025] In the figure: 1. biofilter body; 101. filter plate; 102. coarse filter material layer; 103. fine filter material layer; 2. scraper; 3. moving assembly; 4. angle adjustment assembly; 201. connecting block; 202. fixed shaft; 301. shell; 302. drive motor; 303. screw rod; 304. L-shaped threaded seat; 305. lifting column; 306. first electric telescopic rod; 307. lifting plate; 401. adjustment shell; 402. second electric telescopic rod; 403. sliding plate; 404. drive rod; 405. drive ring; 406. rotating rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1

[0028] Please refer to Figure 1-Figure 4 A biofilter for rural domestic sewage treatment, comprising a biofilter body 1, a filter plate 101 is arranged in the biofilter body 1, the filter plate 101 divides the interior of the biofilter body 1 into a filter chamber and a water outlet chamber from top to bottom, a coarse filter layer 102 and a fine filter layer 103 for treating domestic sewage are arranged in the filter chamber, the coarse filter layer 102 is formed by piling up large stones, and the fine filter layer 103 is formed by piling up plastic particles, a scraper 2 is arranged in the biofilter body 1 for loosening and adjusting the coarse filter layer 102 and the fine filter layer 103, and a moving component 3 for controlling the reciprocating movement of the scraper 2 is arranged on the biofilter body 1;

[0029] The moving assembly 3 includes a shell 301 disposed on the biofilter body 1 and a driving motor 302 disposed on the shell 301. A screw rod 303 is rotatably disposed in the shell 301. The output end of the driving motor 302 is fixedly connected to the screw rod 303. An L-shaped threaded seat 304 is provided on the screw rod 303 through a threaded connection sleeve. A lifting column 305 is slidably disposed on the L-shaped threaded seat 304. A connecting block 201 is provided on the scraper 2. The connecting block 201 is rotatably disposed with the lower end of the lifting column 305. A lifting assembly for controlling the lifting height of the lifting column 305 is also provided on the L-shaped threaded seat 304.

[0030] The lifting assembly includes a first electric telescopic rod 306 disposed on an L-shaped threaded seat 304, a lifting plate 307 is disposed at the telescopic end of the first electric telescopic rod 306, and a lifting column 305 is fixedly connected to the lifting plate 307;

[0031] As can be seen from the above, when the driving motor 302 is started, the driving motor 302 can drive the screw rod 303 to rotate, and the screw rod 303 rotates to drive the L-shaped threaded seat 304 to move inside the shell 301. Since the lifting column 305 is slidably arranged on the L-shaped threaded seat 304, when the L-shaped threaded seat 304 moves, it can drive the lifting column 305 to move inside the biofilter body 1. Since a scraper 2 is arranged below the lifting column 305, the scraper 2 is driven to reciprocate inside the biofilter body 1. In order to increase the sorting and turning range of the scraper 2, the height of the lifting column 305 is increased. The lifting component for adjusting the line starts the first electric telescopic rod 306, the output end of the first electric telescopic rod 306 extends out and drives the lifting plate 307 to move up and down in the vertical plane. Since the lifting column 305 and the lifting plate 307 are fixedly arranged, the scraper 2 can be driven to adjust the height inside the biofilter body 1. When the scraper 2 can move horizontally inside the biofilter body 1 and move up and down at the same time, the filter material can be stirred, thereby loosening the filter material, further breaking up the agglomerated filter material, thereby improving the passing efficiency of the wastewater and increasing the filtered water volume per unit time.

[0032] Furthermore, a rectangular through slot is provided on the housing 301 to facilitate the sliding of the lifting column 305 and the first electric telescopic rod 306 .

[0033] Furthermore, the upper cross-section of the lifting column 305 is rectangular, the lower cross-section of the lifting column 305 is circular, and the lower portion of the lifting column 305 is cylindrical as a whole, which can better move in the filter material layer.

[0034] Furthermore, a guide plate is provided on the L-shaped threaded seat 304 for use with the lifting column 305 , and the guide plate can enhance the stability of the lifting column 305 when it moves up and down.

[0035] Embodiment 2

[0036] Please refer to Figure 2-Figure 6 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0037] As a further technical solution of this embodiment, an angle adjustment component 4 for adjusting the inclination angle of the scraper 2 is provided on the lifting plate 307, and the angle adjustment component 4 includes an adjustment shell 401 provided on the lifting plate 307 and a second electric telescopic rod 402 provided on the adjustment shell 401, a sliding plate 403 is slidably provided in the adjustment shell 401, and the telescopic end of the second electric telescopic rod 402 is fixedly connected to the sliding plate 403, and a driving rod 404 is slidably provided in the lifting column 305, and the upper end of the driving rod 404 is fixedly connected to the sliding plate 403;

[0038] A driving ring 405 is also slidably provided on the lifting column 305, and the lower end of the driving rod 404 is fixedly connected to the driving ring 405 through a connecting column, and a rectangular groove is provided on the lifting column 305 to facilitate the connecting column to slide up and down. A rotating rod 406 is also rotatably provided on the driving ring 405, and a fixed shaft 202 is also provided on the scraper 2, and the end of the rotating rod 406 is rotatably set with the fixed shaft 201; the rotation angle of the scraper 2 is between 0° and 90°.

[0039] Although the scraper 2 can be moved inside the biological filter body 1 through the cooperation of the lifting component and the moving component 3, in order to further increase the efficiency of the scraper 2, an angle adjustment component 4 is also provided. The extension of the telescopic end of the second electric telescopic rod 402 causes the sliding plate 403 inside the adjustment shell 401 to move downward, thereby driving the driving rod 404 to move downward. In the initial state, the scraper 2 is vertically arranged, and this posture is conducive to the up and down movement of the scraper 2, that is, entering different filter material layers to work. However, when the scraper 2 needs to work, the driving rod 404 can be driven downward by the second electric telescopic rod 402, thereby driving the driving ring 405 to move downward, and further driving the rotating rod 406 to rotate, that is, driving the scraper 2 to rotate with the rotation axis of the connecting block 201 as the rotation axis, and finally driving the scraper 2 to rotate to a suitable angle. When the inclined scraper 2 moves horizontally, the filter material can be effectively loosened, which greatly increases the working range of the scraper 2.

[0040] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the above embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biofilter for treating rural domestic sewage, comprising a biofilter body (1), wherein a filter plate (101) is arranged in the biofilter body (1), wherein the filter plate (101) divides the interior of the biofilter body (1) into a filter chamber and a water outlet chamber from top to bottom, wherein a coarse filter material layer (102) and a fine filter material layer (103) for treating rural domestic sewage are arranged in the filter chamber, and wherein: A scraper (2) for loosening and adjusting the coarse filter material layer (102) and the fine filter material layer (103) is provided in the biofilter body (1), and a moving component (3) for controlling the reciprocating movement of the scraper (2) is provided on the biofilter body (1); The moving assembly (3) comprises a shell (301) arranged on the biofilter body (1) and a driving motor (302) arranged on the shell (301); a screw rod (303) is rotatably arranged in the shell (301); the output end of the driving motor (302) is fixedly connected to the screw rod (303); an L-shaped threaded seat (304) is arranged on the screw rod (303) via a threaded connection sleeve; a lifting column (305) is slidably arranged on the L-shaped threaded seat (304); a connecting block (201) is arranged on the scraper (2); the connecting block (201) is rotatably arranged with the lower end of the lifting column (305); and a lifting assembly for controlling the lifting height of the lifting column (305) is also arranged on the L-shaped threaded seat (304).

2. A biofilter for rural domestic sewage treatment according to claim 1, characterized in that: The lifting assembly comprises a first electric telescopic rod (306) arranged on an L-shaped threaded seat (304); a lifting plate (307) is provided at the telescopic end of the first electric telescopic rod (306); and the lifting column (305) is fixedly connected to the lifting plate (307).

3. A biofilter for rural domestic sewage treatment according to claim 2, characterized in that: The lifting plate (307) is provided with an angle adjustment component (4) for adjusting the inclination angle of the scraper (2), the angle adjustment component (4) comprising an adjustment shell (401) provided on the lifting plate (307) and a second electric telescopic rod (402) provided on the adjustment shell (401), a sliding plate (403) is slidably provided in the adjustment shell (401), the telescopic end of the second electric telescopic rod (402) is fixedly connected to the sliding plate (403), a driving rod (404) is slidably provided in the lifting column (305), and the upper end of the driving rod (404) is fixedly connected to the sliding plate (403); A driving ring (405) is also slidably provided on the lifting column (305), the lower end of the driving rod (404) is fixedly connected to the driving ring (405) through a connecting column, and a rectangular groove is provided on the lifting column (305) to facilitate the connecting column to slide up and down. A rotating rod (406) is also rotatably provided on the driving ring (405), and a fixed shaft (202) is also provided on the scraper (2), and the end of the rotating rod (406) is rotatably arranged with the fixed shaft (202).

4. A biofilter for rural domestic sewage treatment according to claim 2, characterized in that: The housing (301) is provided with a rectangular through slot for facilitating the sliding of the lifting column (305) and the first electric telescopic rod (306).

5. A biofilter for rural domestic sewage treatment according to claim 3, characterized in that: The rotation angle of the scraper (2) is between 0° and 90°.

6. A biofilter for rural domestic sewage treatment according to claim 1, characterized in that: The L-shaped threaded seat (304) is also provided with a guide plate used in conjunction with the lifting column (305).

7. A biofilter for rural domestic sewage treatment according to claim 2, characterized in that: The upper cross-section of the lifting column (305) is rectangular, and the lower cross-section of the lifting column (305) is circular.

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