Centralized aerated grit chamber

Abstract

The utility model discloses a centered type aerated grit chamber, which comprises a chamber body, a chamber top and a grit chamber arranged at the bottom of the chamber body, the grit chamber is arranged in the middle of the bottom of the chamber body, two retaining walls extending along the length direction of the chamber body are fixedly arranged on the inner wall of the chamber top, the retaining walls are symmetrically arranged, and a flow blocking area is formed in the middle of each retaining wall. And a chain plate type sand scraper device is assembled at the position, corresponding to the sand settling tank, of the flow blocking area. According to the utility model, by arranging the retaining wall and the ventilation balance hole, the influence of water flow disturbance on the sand scraping machine in the aeration process is effectively reduced, the stability and the sand setting efficiency of the sand scraping machine are improved, the maintenance cost is reduced through the reasonable structural design, and the sewage treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a central aeration grit chamber. Background Art

[0002] In traditional aerated grit chambers, due to the rising effect of bubbles during the aeration process, the scraper inside the grit chamber is often affected by water disturbances, causing it to become unstable or even fall. This not only affects the normal operation of the scraper, but also affects the overall treatment effect of the grit chamber. Currently, solutions to this problem are relatively limited, and an effective improvement measure is urgently needed. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides an improved aerated grit chamber structure, which effectively avoids the problem of sand scraper falling caused by aeration by setting a retaining wall under the top plate of the chamber, thereby improving the stability and treatment effect of the grit chamber.

[0004] A central aerated grit chamber comprises: a chamber body, a chamber top and a grit chamber arranged at the bottom of the chamber body. The chamber body is an inverted trapezoidal structure. The grit chamber is arranged in the middle of the bottom of the chamber body. A retaining wall extending along the length of the chamber body is fixedly arranged on the inner wall of the chamber top. The retaining wall is located directly above the grit chamber. The retaining walls are symmetrically arranged in two. A flow blocking area is formed in the middle of the retaining walls. A chain plate type sand scraper device is installed at the position of the flow blocking area corresponding to the grit chamber. An aeration device is installed on the left side wall of the chamber body.

[0005] As a preferred solution of the present invention, ventilation and balancing holes are equidistantly provided on the retaining wall, and the ventilation and balancing holes are arranged on a normal water level line in the pool body.

[0006] As a preferred solution of the present invention, the height of the retaining wall below the water level is set to 1070 mm.

[0007] As a preferred solution of the present invention, the thickness of the retaining wall is set to 200 mm.

[0008] As a preferred solution of the present invention, the spacing between the retaining walls is 1000 mm.

[0009] As a preferred solution of the present invention, the retaining wall is made of corrosion-resistant and wear-resistant materials.

[0010] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0011] The utility model effectively reduces the impact of water flow disturbance on the sand scraper during aeration by setting retaining walls and ventilation balance holes, thereby improving the stability and sand settling efficiency of the sand scraper. The retaining walls are made of corrosion-resistant and wear-resistant materials, which extends the service life. The utility model reduces maintenance costs and improves sewage treatment effects through reasonable structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a longitudinal structural cross-sectional view of the utility model;

[0013] Figure 2 It is a cross-sectional view of the transverse structure of the present utility model.

[0014] In the figure: 1. Pool body; 2. Aeration device; 3. Pool roof; 4. Chain plate type sand scraper device; 5. Retaining wall; 6. Ventilation balance hole; 7. Sand settling trough. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Example 1

[0017] like Figure 1 As shown, the pool body 1 is designed as an inverted trapezoidal structure, with a sand settling trough 7 provided in the center of the bottom, and a retaining wall 5 extending along the length direction of the pool body 1 is fixedly provided above the inner wall of the pool top 3. The retaining wall 5 is symmetrically arranged directly above the sand settling trough 7. The height of the retaining wall 5 is set to 1070 mm (the part below the water level line), and experiments have shown that this height has the best effect. The spacing is 1000 mm to ensure that it can effectively block water flow disturbances and support the sand scraper. The thickness of the retaining wall 5 is designed to be 200 mm to improve its strength and stability; the retaining wall 5 is made of corrosion-resistant and wear-resistant materials, such as anti-corrosion treated concrete, to ensure good durability under long-term aeration conditions.

[0018] like Figure 2 As shown, ventilation and balancing holes 6 are equidistantly provided on the retaining wall 5. These holes are located on the normal water level line in the pool body 1 and are used to balance the air pressure inside and outside the pool and reduce the impact of water flow. The number and size of the ventilation and balancing holes 6 are determined according to the size of the pool body 1 and the aeration volume. A chain-plate scraper device 4 is installed at a position corresponding to the sand settling trough 7 in the flow-blocking area. The scraper is driven by a motor and the sand scraping action is achieved through chain transmission. The specific model and power of the scraper are selected according to the size of the pool body 1 and the sewage treatment volume.

[0019] An aeration device 2 is installed on the left wall of the pool body 1. The number and arrangement of the aeration devices 2 are determined according to the size of the pool body 1 and the sewage treatment capacity. The aeration device 2 increases the dissolved oxygen content in the water and promotes the decomposition of organic matter by injecting air into the pool.

[0020] During actual operation, after the aeration device 2 is started, the water flow is disturbed and bubbles are generated. However, due to the setting of the retaining wall 5 and the ventilation balance hole 6, the water flow disturbance is effectively blocked and weakened, and the sand scraper can operate stably and clean the particles in the sand settling tank 7.

[0021] In summary, the improved central aerated grit chamber of the utility model effectively improves the stability and grit settling efficiency of the sand scraper through reasonable structural design, reduces maintenance costs, and improves sewage treatment effects.

[0022] Note: The aeration device and the chain plate type scraper device both use existing components and belong to the existing technology, so their specific structures will not be described in detail.

[0023] The components in this article are all universal standard parts or components known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods, so they will not be described in detail here.

[0024] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. A central aerated grit chamber comprising: The invention relates to a tank body (1), a tank top (3) and a grit trough (7) arranged at the bottom of the tank body (1), characterized in that: the tank body (1) is an inverted trapezoidal structure, the grit trough (7) is arranged at the middle position of the bottom of the tank body (1), a retaining wall (5) extending along the length direction of the tank body (1) is fixedly arranged on the inner wall of the tank top (3), the retaining wall (5) is located directly above the grit trough (7), the retaining walls (5) are symmetrically arranged in two, the middle position of the retaining walls (5) forms a flow blocking area, a chain plate type scraper device (4) is installed at a position corresponding to the grit trough (7) in the flow blocking area, and an aeration device (2) is installed on the left side wall of the tank body (1).

2. A central aerated grit chamber according to claim 1, characterized in that: The retaining wall (5) is provided with ventilation and balancing holes (6) at equal intervals, and the ventilation and balancing holes (6) are arranged on the normal water level line in the pool body (1).

3. The central aerated grit chamber according to claim 1, characterized in that: The height of the retaining wall (5) below the water level is set to 1070 mm.

4. The central aerated grit chamber according to claim 1, characterized in that: The thickness of the retaining wall (5) is set to 200 mm.

5. The central aerated grit chamber according to claim 1, characterized in that: The spacing between the retaining walls (5) is 1000 mm.

6. The central aerated grit chamber according to claim 1, characterized in that: The retaining wall (5) is made of corrosion-resistant and wear-resistant material.

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