Sewage treatment filtering device

Abstract

The utility model discloses a sewage treatment filtering device which comprises a filtering box and guide plates, a filtering window is arranged at the top end of the filtering box, the guide plates are arranged below the filtering window, the sewage treatment filtering device further comprises a filtering cylinder and a scraper box, and the filtering cylinder is arranged between the two guide plates. According to the sewage treatment filtering device, all sewage falls on the annular filter screen, part of unprecipitated floccules and insoluble impurities in the sewage are filtered and blocked by the annular filter screen, then the central shaft is driven by the gear motor to rotate in the direction of the storage box body, and the annular filter screen rotates along with the central shaft; impurities are sequentially scraped off by the bottom scraping plate and the upper scraping plate in the rotating process of the annular filter screen, the scraped impurities respectively slide downwards along the bottom scraping plate and the upper scraping plate, and the impurities enter the storage box body to be collected, so that sewage filtering and impurity removing work is completed.

Description

Technical Field

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

[0002] Sewage treatment and filtration is the process of removing impurities, harmful substances and microorganisms from sewage through a series of processes and equipment, so that the sewage meets certain discharge standards or reusable water quality requirements.

[0003] In the existing sewage treatment and filtration process, coagulants need to be added to the water. Most of the floccules rely on their own gravity to separate from the water and sink to the bottom of the water. However, there are still some unprecipitated floccules and insoluble impurities that need to be filtered through a quartz sand filter layer or a simulated quartz sand filter before the sewage can enter the activated carbon filter tank.

[0004] However, when sewage is filtered through a filter, the filtered impurities will remain on the surface of the filter. At this time, the filter is scraped with a scraper. Although most of the impurities can be scraped off, some impurities will still enter the filter under the force of the scraper and become more difficult to remove. Utility Model Content

[0005] The utility model aims to provide a sewage treatment filter device to solve the problem in the above background technology that the sewage treatment filter net cannot quickly remove impurities from the filter net after filtering.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage treatment filter device, comprising a filter box and a guide plate, wherein a filter window is provided at the top of the filter box, a guide plate is provided below the filter window, and the guide plate is fixedly connected to the filter box, and further comprising a filter cartridge and a scraper box, wherein a filter cartridge is provided between two guide plates, and the filter cartridge is located below the guide plate, and a scraper box is provided on one side of the filter cartridge;

[0007] The filter cartridge comprises a cartridge, an annular filter screen and a central axis. An annular filter screen is arranged between the two cartridges, and the annular filter screen is fixedly connected to the cartridge. The center of the cartridge is penetrated by the central axis, and the central axis is fixedly connected to the cartridge.

[0008] The scraper box comprises a storage box body, a bottom scraper and an upper scraper. The top of the storage box body is fixedly connected with the bottom scraper, and an upper scraper is arranged above the bottom scraper.

[0009] Preferably, the bottom scraper and the upper scraper are both provided with scraper blades, and the scraper blades on the bottom scraper and the upper scraper are in contact with the outer surface of the annular filter screen.

[0010] Preferably, the contact point between the scraper blade head of the upper scraper and the annular filter is located in the lower middle of the annular filter.

[0011] Preferably, the scraper box also includes a connecting bracket, which is located on both sides of the upper scraper, and the top end of the connecting bracket is fixedly connected to the upper scraper, and the bottom end of the connecting bracket is fixedly connected to the bottom scraper.

[0012] Preferably, a reduction motor is provided on one side of the filter box, one end of the central shaft is fixedly connected to the shaft of the reduction motor, and the other end of the central shaft is movably mounted on the filter box.

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

[0014] The utility model discloses a sewage treatment filter device, after filtering impurities through an annular filter screen, an upper scraper and a bottom scraper scrape the impurities on the annular filter screen to avoid impurities remaining on the annular filter screen;

[0015] The upper scraper and the bottom scraper perform double-layer scraping on the annular filter, so that impurities can be removed more thoroughly, and the upper scraper and the bottom scraper scrape the annular filter from bottom to top, making it easier for impurities to separate from the annular filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A top view of the utility model as a whole;

[0017] Figure 2 A cross-sectional view of the utility model as a whole;

[0018] Figure 3 It is a three-dimensional diagram of the scraper box of the utility model.

[0019] In the figure: 1. filter box; 2. filter cartridge; 21. cartridge body; 22. annular filter screen; 23. center axis; 3. guide plate; 4. reduction motor; 5. scraper box; 51. storage box body; 52. bottom scraper; 53. upper scraper; 54. connecting bracket. DETAILED DESCRIPTION

[0020] 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 implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0021] See also Figure 1-3A sewage treatment filtering device comprises a filter box 1 and a guide plate 3. A filter window is provided at the top of the filter box 1. A guide plate 3 is provided below the filter window, and the guide plate 3 is fixedly connected to the filter box 1. It also comprises a filter cartridge 2 and a scraper box 5. A filter cartridge 2 is provided between the two guide plates 3, and the filter cartridge 2 is located below the guide plate 3. A scraper box 5 is provided on one side of the filter cartridge 2. The filter cartridge 2 comprises a cylinder 21, an annular filter screen 22 and a central axis 23. An annular filter screen 22 is provided between the two cylinders 21, and the annular filter screen 22 is fixedly connected to the cylinder 21. The center of the cylinder 21 is penetrated by the central axis 23, and the central axis 23 is fixedly connected to the cylinder 21. Sewage is filtered out from the top of the filter box 1. The sewage falls down from the filter window, and under the guidance of the guide plate 3, all the sewage falls on the annular filter screen 22. Some unprecipitated flocs and insoluble impurities in the sewage are filtered and blocked by the annular filter screen 22, and the remaining sewage passes through the annular filter screen 22 and enters the activated carbon pool for adsorption filtration. The scraper box 5 includes a storage box body 51, a bottom scraper 52 and an upper scraper 53. The top of the storage box body 51 is fixedly connected with the bottom scraper 52, and the upper scraper 53 is provided above the bottom scraper 52. The annular filter screen 22 is scraped of impurities by the bottom scraper 52 and the upper scraper 53 in turn during the rotation process. The scraped impurities slide downward along the bottom scraper 52 and the upper scraper 53 respectively, and the impurities enter the storage box body 51 for collection.

[0022] Furthermore, both the bottom scraper 52 and the upper scraper 53 are provided with scraper heads, and the scraper heads on the bottom scraper 52 and the upper scraper 53 are in contact with the outer surface of the annular filter 22. The bottom scraper 52 and the upper scraper 53 remove impurities on the surface of the annular filter 22 through the scraper heads.

[0023] Furthermore, the contact point between the scraper head of the upper scraper 53 and the annular filter screen 22 is located in the lower middle of the annular filter screen 22 as a whole. The upper scraper 53 and the bottom scraper 52 scrape the annular filter screen 22 from the lower side, making it easier to scrape off impurities on the surface of the annular filter screen 22.

[0024] Furthermore, the scraper box 5 also includes a connecting bracket 54, which is located on both sides of the upper scraper 53, and the top end of the connecting bracket 54 is fixedly connected to the upper scraper 53, and the bottom end of the connecting bracket 54 is fixedly connected to the bottom scraper 52, thereby strengthening the supporting strength of the upper scraper 53.

[0025] Furthermore, a reduction motor 4 is provided on one side of the filter box 1, one end of the central axis 23 is fixedly connected to the rotating shaft of the reduction motor 4, and the other end of the central axis 23 is movably mounted on the filter box 1. The reduction motor 4 drives the central axis 23 to rotate in the direction of the storage box 51, and the central axis 23 drives the cylinder 21 to rotate synchronously, so that the annular filter screen 22 rotates accordingly.

[0026] Working principle: The utility model is a sewage treatment and filtering device. When in use, the sewage falls from the filter window on the top of the filter box 1. Under the guidance of the guide plate 3, all the sewage falls on the annular filter screen 22. Some unprecipitated flocculants and insoluble impurities in the sewage are filtered and blocked by the annular filter screen 22. The remaining sewage passes through the annular filter screen 22 and enters the activated carbon pool for adsorption filtration. The central axis 23 is then driven by the reduction motor 4 to rotate toward the direction of the storage box 51, and the annular filter screen 22 rotates accordingly. During the rotation process, the annular filter screen 22 is scraped off impurities by the bottom scraper 52 and the upper scraper 53 in turn. The scraped impurities slide downward along the bottom scraper 52 and the upper scraper 53 respectively, and the impurities enter the storage box 51 for collection, completing the sewage filtration and impurity removal work.

[0027] 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 sewage treatment filtering device, comprising a filtering box (1) and a guide plate (3), wherein a filtering window is provided at the top of the filtering box (1), a guide plate (3) is provided below the filtering window, and the guide plate (3) is fixedly connected to the filtering box (1), characterized in that: It also comprises a filter cartridge (2) and a scraper box (5), wherein the filter cartridge (2) is provided between the two guide plates (3), and the filter cartridge (2) is located below the guide plates (3), and a scraper box (5) is provided on one side of the filter cartridge (2); The filter cartridge (2) comprises a cartridge body (21), an annular filter screen (22) and a central axis (23); an annular filter screen (22) is provided between the two cartridge bodies (21), the annular filter screen (22) and the cartridge body (21) are fixedly connected; the center of the cartridge body (21) is penetrated by the central axis (23), and the central axis (23) and the cartridge body (21) are fixedly connected; The scraper box (5) comprises a storage box body (51), a bottom scraper (52) and an upper scraper (53); the top end of the storage box body (51) is fixedly connected to the bottom scraper (52), and the upper scraper (53) is provided above the bottom scraper (52).

2. A sewage treatment and filtering device according to claim 1, characterized in that: The bottom scraper (52) and the upper scraper (53) are both provided with scraper blades, and the scraper blades on the bottom scraper (52) and the upper scraper (53) are both in contact with the outer surface of the annular filter screen (22).

3. A sewage treatment and filtering device according to claim 1, characterized in that: The contact point between the scraper blade head of the upper scraper (53) and the annular filter screen (22) is located at a position slightly below the middle of the annular filter screen (22).

4. A sewage treatment and filtering device according to claim 1, characterized in that: The scraper box (5) further comprises a connecting bracket (54), the connecting bracket (54) being located on both sides of the upper scraper (53), and the top end of the connecting bracket (54) being fixedly connected to the upper scraper (53), and the bottom end of the connecting bracket (54) being fixedly connected to the bottom scraper (52).

5. A sewage treatment and filtering device according to claim 1, characterized in that: A reduction motor (4) is provided on one side of the filter box (1); one end of the central shaft (23) is fixedly connected to the rotating shaft of the reduction motor (4); and the other end of the central shaft (23) is movably mounted on the filter box (1).

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