Self-cleaning grit chamber

Abstract

The utility model relates to a self-cleaning grit chamber, which effectively solves the problem that dirt is easy to adhere to the inner wall of the existing grit chamber. Comprising a rectangular pool body with an upward opening, collecting boxes with upward openings are arranged on the left side and the right side of the lower end of the pool body respectively, falling grooves communicated with the collecting boxes on the corresponding sides are formed in the left side and the right side of the lower side wall of the pool body respectively, and L-shaped sliding blocks capable of sliding left and right are arranged on the front side and the rear side of the upper end of the pool body respectively; triangular scrapers capable of making contact with the side wall of the pool body are arranged at the left ends and the right ends of the moving plates respectively, the lower ends of the two moving plates are connected through a filter plate, a left-right axial air conveying pipe located above the filter plate is arranged in the pool body, a plurality of front-back axial aeration pipes are arranged at the front ends and the rear ends of the air conveying pipe respectively, and a plurality of aeration holes are formed in the upper ends of the aeration pipes. A connecting pipe is arranged at the upper end of the gas conveying pipe, sand pumps are arranged at the left end and the right end of the pool body respectively, and sand pumping pipes inserted into the collecting boxes are arranged on the sand pumps; the device is simple in structure, novel in conception, convenient to use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage liquid treatment equipment, in particular to a self-cleaning grit chamber. Background Art

[0002] Aerated grit is an important process in sewage pretreatment. Its purpose is to remove larger inorganic sand and gravel in the sewage and reduce the risk of wear on subsequent sewage treatment equipment. The swirling motion of water increases the chances of inorganic particles colliding and rubbing against each other, and removes organic pollutants attached to the sand. The organic matter content in the grit is less than 10%, which overcomes the shortcomings of ordinary horizontal flow grit chambers (the grit contains 15% organic matter, which increases the difficulty of subsequent treatment of the grit). By adjusting the aeration volume, the swirling speed of the sewage can be controlled to stabilize the sand removal efficiency. At the same time, the aerated grit chamber also has functions such as pre-aeration, deodorization, defoaming, and prevention of anaerobic decomposition of sewage.

[0003] The existing aerated grit chamber has the following defects when in use: some organic pollutants attached to the surface of the gravel have a high viscosity, and the dirt attached to it cannot be removed even after aeration treatment. These high-viscosity gravels will adhere to the bottom and side walls of the grit chamber, and long-term accumulation will easily affect the use effect of the grit chamber. At the same time, manual cleaning also requires draining the dirty liquid in the grit chamber and then cleaning it manually, which is cumbersome, time-consuming and labor-intensive. Utility Model Content

[0004] In view of the above situation, in order to make up for the deficiencies of the prior art, the purpose of the utility model is to provide a self-cleaning grit chamber, which effectively solves the problem that dirt is easily attached to the inner wall of the existing grit chamber.

[0005] The technical solution is as follows: the utility model comprises a rectangular pool body with an opening facing upwards, collecting boxes with openings facing upwards are respectively arranged on the left and right sides of the lower end of the pool body, dropping grooves connected to the collecting boxes on the corresponding sides are respectively opened on the left and right sides of the lower side wall of the pool body, L-shaped sliders that can slide left and right are respectively arranged on the front and rear sides of the upper end of the pool body, a movable plate is arranged at the lower end of the slider, triangular scrapers that can contact the side wall of the pool body are respectively arranged at the left and right ends of the movable plate, the lower ends of the two movable plates are connected through a filter plate, an air supply pipe with left and right axial directions and located above the filter plate is arranged in the pool body, a plurality of front and rear axial aeration pipes are respectively arranged at the front and rear ends of the air supply pipe, a plurality of aeration holes are opened at the upper end of the aeration pipe, a connecting pipe is arranged at the upper end of the air supply pipe, sand pumps are respectively arranged at the left and right ends of the pool body, and a sand extraction pipe inserted into the collection box is arranged on the sand pump.

[0006] Compared with the prior art, the beneficial effects of the utility model are: it can realize aeration and sand settling of the dirt in the pool body, and collect the gravel, preventing the gravel from causing wear and damage to the processing equipment in the subsequent processing flow, and at the same time, it can scrape and clean the dirt adhering to the inner wall of the pool body and collect it, preventing the dirt accumulated on the side wall from affecting the sand settling effect of the sand settling tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is the main axonometric drawing of the utility model.

[0008] Figure 2 It is a full-section main axonometric drawing of the utility model.

[0009] Figure 3 It is a full-section left-view axonometric drawing of the utility model.

[0010] Figure 4 It is a full-section left-view axonometric drawing of the utility model.

[0011] Figure 5 It is a full-section top view axonometric drawing of the utility model.

[0012] Figure 6 This utility model Figure 5 A is an enlarged view of the middle image.

[0013] Reference numerals:

[0014] 1. Pool body; 2. Collection box; 3. Drop trough; 4. Slider; 5. Moving plate; 6. Scraper; 7. Filter plate; 8. Air pipe; 9. Aeration pipe; 10. Aeration hole; 11. Connecting pipe; 12. Sand pump; 13. Sand extraction pipe; 14. Stud; 15. Motor; 16. Slide block; 17. Filter box; DETAILED DESCRIPTION

[0015] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited to the basic implementation disclosed below.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0018] Depend on Figures 1 to 6 The invention provides a rectangular pool body 1 with an upward opening, wherein the left and right sides of the lower end of the pool body 1 are respectively provided with a collecting box 2 with an upward opening, and the left and right sides of the lower side wall of the pool body 1 are respectively provided with a dropping groove 3 connected with the collecting box 2 on the corresponding side, and the front and rear sides of the upper end of the pool body 1 are respectively provided with an L-shaped slider 4 that can slide left and right, and the lower end of the slider 4 is provided with a movable plate 5, and the left and right ends of the movable plate 5 are respectively provided with a triangular scraper 6 that can contact the side wall of the pool body 1, and the lower ends of the two movable plates 5 are connected through a filter plate 7, and the pool body 1 is provided with a left and right axial air pipe 8 located above the filter plate 7, and the front and rear ends of the air pipe 8 are respectively provided with a plurality of front and rear axial aeration pipes 9, and the upper end of the aeration pipe 9 is provided with a plurality of aeration holes 10, and the upper end of the air pipe 8 is provided with a connecting pipe 11, and the left and right ends of the pool body 1 are respectively provided with a sand pump 12, and the sand pump 12 is provided with a sand extraction pipe 13 inserted into the collecting box 2.

[0019] In order to move the slider 4 left and right, the slider 4 is slidably connected to the pool body 1, and the front and rear ends of the pool body 1 are respectively rotatably connected with the studs 14 which are threadedly connected to the slider 4 on the corresponding side.

[0020] In order to facilitate the rotation of the stud 14, motors 15 are respectively provided at the front and rear ends of the pool body 1, and the output shaft of the motor 15 is coaxially fixedly connected with the stud 14 on the corresponding side.

[0021] In order to facilitate the collection of sediment, sliding blocks 16 with inclined upper surfaces are respectively provided on the front and rear sides of the collection box 2.

[0022] In order to facilitate the collection of settled sand, filter boxes 17 with openings facing upward are respectively detachably connected to the left and right sides of the upper end of the pool body 1 , and the upper end of the sand extraction pipe 13 is located directly above the filter box 17 .

[0023] In order to facilitate supporting the pool body 1, a support plate is provided at the lower end of the pool body 1.

[0024] When the utility model is used, the connecting pipe 11 is first connected to the aerator and the aerator is turned on. At this time, the air generated by the aerator enters the air delivery pipe 8 through the connecting pipe 11, and is dispersed to each aeration pipe 9 through the air delivery pipe 8 and enters the sewage in the tank body 1 through the aeration hole 10. The air is continuously input to drive the water to do swirling motion, which increases the chances of inorganic particles colliding and rubbing against each other, removes organic pollutants attached to the sand particles, and the inorganic matter removed from the sand and gravel floats on the water surface waiting for the next step of processing. At the same time, the sand and gravel after the dirt is removed settle to the bottom of the tank body 1 due to gravity and accumulate;

[0025] The sand and gravel with strong dirt adhesion and high viscosity are floated around and adhered to the side wall of the pool body 1 after aeration to form an adhesion layer. When the pool body 1 needs to be cleaned after a period of use, the motor 15 is turned on at this time, and the motor 15 drives the front and rear two studs 14 to rotate forwardly. The forward rotation of the studs 14 drives the two sliders 4 to slide leftward, and the two sliders 4 drive the moving plate 5 to move leftward. The moving plate 5 drives the scraper 6 thereon to move leftward to scrape off the dirt attached to the side wall of the pool body 1. The scraped dirt falls to the bottom of the pool. When the two moving plates 5 move to the left, they also drive the filter plate 7 at the lower end to move to the left. The filter plate 7 moves to the left to scrape off the dirt deposited on the lower surface of the pool body 1 and push it to the left. At the same time, water molecules are filtered from the left side of the filter plate 7 to the right side, so as to prevent the dirt in the pool body 1 from being disturbed and aggravated during movement due to the resistance of the filter plate 7, and to prevent the flowing sewage from causing the dirt deposited at the bottom to float to the top again.

[0026] The motor 15 rotates continuously, so that the stud 14 drives the scraper 6 and the filter plate 7 to move to the left continuously, scrapes the dirt on the inner wall of the left side of the pool body 1, and pushes the dirt accumulated below to the left. After being pushed to the left for a certain distance, the accumulated dirt is pushed to the left into the drop groove 3 on the left side. The dirt falls from the drop groove 3 to the collection box 2 on the left side due to gravity, so that the dirt is collected. The dirt falling into the collection box 2 slides from the left and right sides of the collection box 2 to the middle of the collection box 2 due to the action of the inclined surface of the sliding block 16.

[0027] At this time, the motor 15 is controlled to reverse, and the motor 15 drives the two studs 14 to reverse, and the studs 14 drive the scraper 6 and the filter plate 7 to start moving to the right. When moving to the right, the dirt on the side wall of the pool body 1 is scraped off and the accumulated dirt at the bottom is pushed from left to right. After pushing to the right for a certain distance, the accumulated dirt is pushed into the collection box 2 on the right to realize the collection of the dirt. At the same time, due to the effect of the drop plate, the dirt is gathered from the collection box 2 on the right to the middle. Then, the collection of the dirt is realized at this time, the motor 15 is turned off, and the sand pump 12 is turned on. The sand pump 12 is turned on to work and the dirt in the collection boxes 2 on the left and right sides is extracted through the sand pumping pipe 13 and dropped from the upper end of the sand pumping pipe 13 to the filter box 17 on the corresponding side;

[0028] The dirty liquid that falls into the filter box 17 is mixed with the gravel, and the filter box 17 filters out the gravel and allows the liquid to flow back into the pool body 1. After using it for a period of time, the filter box 17 is removed from the pool body 1, the gravel inside is poured out and placed again on the pool body 1 to continue collecting.

[0029] Compared with the prior art, the beneficial effects of the utility model are as follows: the pool body, scraper, filter plate, etc. provided therein can realize aeration and sand settling of the dirt in the pool body, and collect the gravel, to prevent the gravel from causing wear and damage to the processing equipment in the subsequent processing flow; at the same time, the dirt adhering to the inner wall of the pool body can be scraped off, cleaned and collected, to prevent the dirt accumulated on the side wall from affecting the sand settling effect of the sand settling tank; the structure is simple, the concept is novel, it is easy to use and it is highly practical.

[0030] It should be pointed out that, according to the needs of implementation, the various components described in the embodiments of the present utility model can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of the present utility model.

[0031] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A self-cleaning grit chamber, comprising a rectangular chamber body (1) with an opening facing upward, characterized in that: The left and right sides of the lower end of the pool body (1) are respectively provided with a collection box (2) with an opening facing upwards; the left and right sides of the lower side wall of the pool body (1) are respectively provided with a drop groove (3) which is connected to the collection box (2) on the corresponding side; the front and rear sides of the upper end of the pool body (1) are respectively provided with an L-shaped slider (4) which can slide left and right; the lower end of the slider (4) is provided with a moving plate (5); the left and right ends of the moving plate (5) are respectively provided with a triangular scraper (6) which can contact the side wall of the pool body (1); the lower ends of the two moving plates (5) are connected via a filter plate (7); a gas pipe (8) which is arranged in a left and right axial direction and is located above the filter plate (7) is arranged in the pool body (1); a plurality of aeration pipes (9) which are arranged in a front and rear axial direction are respectively arranged at the front and rear ends of the gas pipe (8); a plurality of aeration holes (10) are respectively opened at the upper end of the aeration pipe (9); a connecting pipe (11) is provided at the upper end of the gas pipe (8); a sand pump (12) is respectively provided at the left and right ends of the pool body (1); and a sand pump (13) which is inserted into the collection box (2) is provided on the sand pump (12).

2. A self-cleaning grit chamber according to claim 1, characterized in that: The slider (4) is slidably connected to the pool body (1), and the front and rear ends of the pool body (1) are rotatably connected to studs (14) on the left and right axial directions and threadedly connected to the slider (4) on the corresponding side.

3. A self-cleaning grit chamber according to claim 1, characterized in that: Motors (15) are respectively provided at the front and rear ends of the pool body (1), and the output shaft of the motor (15) is coaxially fixedly connected to the stud (14) on the corresponding side thereof.

4. A self-cleaning grit chamber according to claim 1, characterized in that: The collection box (2) is provided with sliding blocks (16) on the front and rear sides thereof, respectively, with the upper end surfaces being inclined surfaces.

5. A self-cleaning grit chamber according to claim 1, characterized in that: The left and right sides of the upper end of the pool body (1) are respectively detachably connected with filter boxes (17) with openings facing upwards, and the upper end of the sand extraction pipe (13) is located directly above the filter box (17).

6. A self-cleaning grit chamber according to claim 1, characterized in that: A support plate is provided at the lower end of the pool body (1).

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