Rural sewage filtering device

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a rural sewage filtering device which comprises a sewage pretreatment room and a filtering device arranged in the sewage pretreatment room, the filtering device comprises a filtering piece arranged under a water inlet pipe of the sewage pretreatment room; the guide plate is arranged above the filter part and is used for dispersing the falling direction of the sewage entering the sewage pretreatment room; and the guide pipe is arranged below the filter part and is used for collecting impurities sliding from the impurity guide slope and guiding the impurities out of the sewage pretreatment room. By arranging the filtering piece with the impurity guiding curved surface, impurities can be effectively captured and guided to a specific direction in the filtering process, accumulation and blockage of the impurities are avoided, the filtering efficiency is improved, the guiding plate is arranged above the filtering piece and has the main function of dispersing and guiding the falling direction of sewage entering the sewage pretreatment chamber, and the filtering efficiency is improved. And finally, the filtered impurities are collected in the guide pipe and discharged out of the sewage pretreatment room along the guide pipe.

Description

Technical Field

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

[0002] Rural sewage treatment is a comprehensive and systematic process, including preliminary collection, pretreatment, septic tank sedimentation, biological treatment and ecological treatment. It aims to remove pollutants in sewage and protect the rural environment. The treated sewage can be recycled after disinfection. In the sewage pretreatment stage, the sewage collected in the sewage pool needs to be flowed to the screen through a pipe. The solid impurities in the sewage are intercepted by the screen to facilitate the subsequent treatment of the sewage. The screen is usually composed of a group of parallel bars (or rods, plates). These bars are arranged in parallel at a certain interval to form a filtration channel. The screen plate mainly intercepts large debris (such as leaves, plastic bags, crop residues, etc.). Since rural sewage may contain more fibers, hair and other easily entangled materials, the screen is prone to clogging, thereby reducing the efficiency of sewage treatment. Summary of the Invention

[0003] In view of the above problems, the purpose of the present invention is to provide a rural sewage filtration device to solve the problem that the grille in the prior art is easily clogged by easily entangled materials during the sewage filtration process as mentioned in the background art.

[0004] To achieve the above objectives, the utility model adopts the following technical solution: a rural sewage filtering device, comprising a sewage pretreatment room and a filtering device arranged in the sewage pretreatment room and used to filter impurities in the sewage, the filtering device comprising a filter element arranged directly below the water inlet pipe of the sewage pretreatment room and used to filter the sewage, the filter element having a continuous and smooth impurity guide surface, a guide plate arranged above the filter element and used to disperse the falling direction of the sewage entering the sewage pretreatment room, and a conduit arranged below the filter element and used to collect impurities sliding down the impurity guide slope and guide them out of the sewage pretreatment room.

[0005] The beneficial effects of the present invention are as follows: by providing a filter element with an impurity guiding curved surface, impurities can be effectively captured and guided in a specific direction during the filtration process, thereby avoiding the accumulation and clogging of impurities and improving the filtration efficiency; by providing a guide plate above the filter element, its main function is to disperse and guide the falling direction of sewage entering the sewage pretreatment room, thereby reducing the direct impact force of the sewage on the filter element, extending the service life of the filter element, and ensuring that the sewage can flow through the filter element more evenly, improving the filtration effect; finally, the filtered impurities are collected in the conduit and discharged from the sewage pretreatment room along the conduit.

[0006] In order to improve the effect of grid filtering:

[0007] As a further improvement of the above technical solution: the filter element includes a coarse grid with a larger grid spacing and a fine grid with a smaller grid spacing.

[0008] The beneficial effects of this improvement are: the coarse screen is used to intercept larger solid impurities in sewage, and the fine screen has a smaller bar spacing and is used to intercept fine solid impurities and hair. By setting two screens with different bar spacings, the screen filtering effect can be improved.

[0009] In order to allow the impurities filtered out by the coarse and fine screens to slide down the impurity guide surface into the conduit under the action of gravity:

[0010] As a further improvement of the above technical solution: the coarse grid and the fine grid are both configured to be conical, and the top diameter of the coarse grid and the fine grid is larger than the bottom diameter.

[0011] The beneficial effect of this improvement is that the conical coarse and fine screens are shaped like conical cylinders. When the sewage is dispersed along the guide plate, it is first filtered through the coarse screen and then filtered through the fine screen. The filtered impurities slide into the conduit along the impurity guide surfaces on the coarse and fine screens under the action of gravity. With the cooperation of the guide plate, the sewage filtration surface can be increased, the probability of filter blockage is reduced, and the efficiency of sewage filtration can be improved.

[0012] In order to reduce the adhesion and accumulation of impurities on the grille surface:

[0013] As a further improvement of the above technical solution: the bars on the coarse grid and the fine grid are both cylindrical.

[0014] The beneficial effects of this improvement are: the cylindrical bars have a continuous and smooth surface, which helps to reduce the adhesion and accumulation of impurities on the surface of the grille. Compared with grilles of other shapes, the cylindrical grille is less likely to form dead corners, thereby reducing the possibility of impurity retention. Under the impact of sewage, the fibers and hair on the grille can slide along the cylindrical bars into the conduit.

[0015] In order to improve the efficiency of the filter and reduce the chance of clogging:

[0016] As a further improvement of the above technical solution: the guide plate is also configured to be conical, and the top diameter of the guide plate is smaller than the bottom diameter.

[0017] The beneficial effect of this improvement is that when the sewage hits the guide plate during its fall, it is dispersed to the surroundings and directed to different areas of the filter element, thereby improving the filtration efficiency of the filter element and reducing the chance of clogging.

[0018] In order to prevent sewage from splashing onto the outside of the filter element and failing to achieve the filtering effect:

[0019] As a further improvement of the above technical solution: a water shield is provided above the guide plate, which is connected to the bottom of the water inlet pipe of the sewage pretreatment room and is used to prevent water falling onto the guide plate from splashing out of the filter element.

[0020] The beneficial effect of this improvement is: by setting up a water shield, which can be conical and parallel to the guide plate, or annular and covering the top of the guide plate, it can block the sewage that hits the guide plate, preventing the sewage from splashing to the outside of the filter element and failing to achieve the filtering effect.

[0021] In order to separate the water mixed with impurities during the process of impurity extraction:

[0022] As a further improvement of the above technical solution: the conduit is inclined, and a water filter plate is provided at the bottom of the conduit.

[0023] The beneficial effect of this improvement is that when impurities fall into the conduit, they are discharged along the conduit to the sewage pretreatment room. During the process of impurity discharge, the sewage mixed with the impurities is separated by the filter plate. The filter plate is set at the bottom of the conduit to prevent the sewage from entering the conduit during the falling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view structural schematic diagram of the present utility model.

[0025] Figure 2 It is a schematic diagram of the front cross-sectional structure of the present utility model.

[0026] Figure 3 It is a rear cross-sectional structural schematic diagram of the present invention.

[0027] Figure 4 It is a left side cross-sectional structural schematic diagram of the present invention.

[0028] In the figure: 1. Sewage pretreatment room; 2. Water inlet pipe; 3. Impurity guide surface; 4. Filter element; 5. Guide plate; 6. Conduit; 7. Coarse screen; 8. Fine screen; 9. Water retaining cover; 10. Water filter plate; 11. Water outlet pipe; 12. Connecting rod; 13. Fixing rod. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0030] Existing rural sewage filtration devices mainly include grilles for intercepting larger solid impurities in sewage during the pretreatment stage. Usually, the grilles are composed of a group of parallel metal bars or screens. These bars are arranged in parallel at a certain interval to form a filtration channel. The grilles are divided into flat grilles and curved grilles. During specific operation, the sewage is first collected from various sources and discharged into the sewage collection tank. The sewage in the sewage collection tank is then passed into the grille through a pipe. Large particles of impurities such as leaves, plastic bags and hair are removed through equipment such as grilles and screens to prevent subsequent treatment equipment from being blocked. The above is an introduction to existing rural sewage filtration devices.

[0031] From the above, it can be seen that the existing rural sewage filtering device has the following defects when in use. Since rural sewage may contain a large amount of fibers, hair and other easily entangled substances, the hair adheres to and remains on the surface of the grille, making it difficult to flow, which causes the grille to be easily blocked. Based on the above problems, the present utility model adopts the following improvement method to solve them.

[0032] like Figure 1-4 As shown, a rural sewage filtering device includes a sewage pretreatment room 1 and a filtering device arranged in the sewage pretreatment room 1 and used to filter impurities in the sewage, the filtering device includes a filter element 4 arranged directly below the water inlet pipe 2 of the sewage pretreatment room 1 and used to filter the sewage, and having a continuous and smooth impurity guide curved surface 3, a guide plate 5 arranged above the filter element 4 and used to disperse the falling direction of the sewage entering the sewage pretreatment room 1, and a conduit 6 arranged below the filter element 4 and used to collect impurities sliding down the impurity guide slope and guide them out of the sewage pretreatment room. By providing a filter element 4 with an impurity guide surface 3, impurities are effectively captured and guided in a specific direction during the filtration process, thereby avoiding the accumulation and clogging of impurities and improving the filtration efficiency. By providing a guide plate 5 above the filter element 4, its main function is to disperse and guide the falling direction of the sewage entering the sewage pretreatment room 1, thereby reducing the direct impact force of the sewage on the filter element 4, extending the service life of the filter element 4, and ensuring that the sewage can flow through the filter element 4 more evenly, improving the filtration effect. Finally, the filtered impurities are collected in the conduit 6 and discharged from the sewage pretreatment room 1 along the conduit 6.

[0033] Further, such as Figure 2-4 As shown, the filter element 4 includes a coarse grid 7 with a larger grid bar spacing and a fine grid 8 with a smaller grid bar spacing. The coarse grid 7 is used to intercept larger solid impurities in sewage, and the fine grid 8 has a smaller grid bar spacing and is used to intercept fine solid impurities and hair. By setting two grids with different grid bar spacings, the grid filtering effect can be improved.

[0034] Further, such as Figure 2-4As shown, the coarse screen 7 and the fine screen 8 are both configured to be conical, and the top diameter of the coarse screen 7 and the fine screen 8 is larger than the bottom diameter. The conical coarse screen 7 and the fine screen 8 are shaped like a conical cylinder. When the sewage is dispersed along the guide plate 5, it is first filtered through the coarse screen 7 and then filtered through the fine screen 8. The filtered impurities slide along the impurity guide curved surface 3 on the coarse screen 7 and the fine screen 8 into the conduit 6 under the action of gravity. With the cooperation of the guide plate 5, the sewage filtration surface can be increased, the probability of clogging of the filter element 4 can be reduced, and the efficiency of sewage filtration can also be improved. The tops of the coarse screen 7 and the fine screen 8 are connected by multiple connecting plates, and the fine screen 8 is located on the outside of the coarse screen 7. The fine screen 8 is connected to the inner wall of the sewage pretreatment room 1 through a fixing rod 13.

[0035] Further, such as Figure 2-4 As shown, the bars on the coarse grid 7 and the fine grid 8 are both cylindrical. The cylindrical bars have a continuous and smooth surface, which helps to reduce the adhesion and accumulation of impurities on the grid surface. Compared with grids of other shapes, the cylindrical grid is less likely to form dead corners, thereby reducing the possibility of impurity retention. Under the impact of sewage, the fibers and hair on the grid can slide along the cylindrical bars into the conduit 6. The grid can be made of aluminum alloy material, which is wear-resistant and corrosion-resistant, has good wear and corrosion resistance, and can maintain the integrity and functionality of the grid for a long time, thereby reducing the blockage problem caused by grid damage.

[0036] Further, such as Figure 2-4 As shown, the guide plate 5 is also configured to be conical, and the top diameter of the guide plate 5 is smaller than the bottom diameter. When the sewage hits the guide plate 5 during the falling process, it is dispersed to the surroundings and guided to different areas of the filter element 4, thereby improving the filtration efficiency of the filter element 4 and reducing the chance of clogging. The two sides of the guide plate 5 are connected to the top of the coarse screen 7 through a connecting rod 12, and the upper part of the connecting rod 12 is a pointed cone.

[0037] Further, such as Figure 2-4 As shown, a water shield 9 is provided above the guide plate 5, which is connected to the bottom of the water inlet pipe 2 of the sewage pretreatment room 1 and is used to prevent water falling onto the guide plate 5 from splashing out of the filter element 4. By providing the water shield 9, which can be conical and parallel to the guide plate 5, or can be annular and cover the top of the guide plate 5, it can block the sewage that hits the guide plate 5, and prevent the sewage from splashing to the outside of the filter element 4 and failing to achieve the filtering effect.

[0038] Further, such as Figure 2-3As shown, the conduit 6 is inclined, and a water filter plate 10 is provided at the bottom of the conduit 6. When impurities fall into the conduit 6, they are guided out of the sewage pretreatment room 1 along the conduit 6. In the process of leading out impurities, the sewage mixed with the impurities is separated by the water filter plate 10. The water filter plate 10 is provided at the bottom of the conduit 6 to prevent the sewage from entering the conduit 6 during the falling process. The direction of the conduit 6 is opposite to the direction of the outlet pipe 11 of the sewage pretreatment room 1, so as to separate the impurities and sewage, and both sides of the conduit 6 are connected to the sewage pretreatment room 1 through support rods.

[0039] It should be further explained that the utility model is suitable for the sewage pretreatment stage to intercept larger impurities in the sewage. The sewage discharged along the outlet pipe needs to undergo other steps such as fine impurity filtration, biological treatment, ecological treatment and disinfection.

[0040] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0041] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only the preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A rural sewage filtering device, comprising a sewage pretreatment room (1) and a filtering device arranged in the sewage pretreatment room (1) and used to filter impurities in the sewage, characterized in that: The filtering device comprises a filter element (4) provided just below the water inlet pipe (2) of the sewage pretreatment room (1) and used for filtering sewage, the filter element having a continuous and smooth impurity guide curved surface (3), a guide plate (5) provided above the filter element (4) and used for dispersing the falling direction of the sewage entering the sewage pretreatment room (1), and a conduit (6) provided below the filter element (4) and used for collecting impurities sliding down the impurity guide slope and guiding the impurities out of the sewage pretreatment room.

2. A rural sewage filtering device according to claim 1, characterized in that: The filter element (4) comprises a coarse grid (7) with a larger grid spacing and a fine grid (8) with a smaller grid spacing.

3. A rural sewage filtering device according to claim 2, characterized in that: The coarse grid (7) and the fine grid (8) are both arranged in a cone shape, and the top diameter of the coarse grid (7) and the fine grid (8) is larger than the bottom diameter.

4. A rural sewage filtering device according to claim 3, characterized in that: The bars on the coarse grid (7) and the fine grid (8) are both cylindrical.

5. A rural sewage filtering device according to claim 1, characterized in that: The guide plate (5) is also configured to be conical, and the top diameter of the guide plate (5) is smaller than the bottom diameter.

6. A rural sewage filtering device according to claim 5, characterized in that: A water shield (9) is provided above the guide plate (5) and is connected to the bottom of the water inlet pipe (2) of the sewage pretreatment room (1) and is used to prevent water falling onto the guide plate (5) from splashing out of the filter element (4).

7. A rural sewage filtering device according to claim 1, characterized in that: The conduit (6) is inclined, and a water filter plate (10) is provided at the bottom of the conduit (6). The direction of the conduit (6) is opposite to the direction of the outlet pipe (11) of the sewage pretreatment room (1).

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