Self-cleaning sewage treatment aeration tank drainage structure

Abstract

The utility model provides a self-cleaning sewage treatment aeration tank drainage structure, which comprises an aeration tank, a cleaning assembly and an overflow weir assembly, and compared with the prior art, the self-cleaning sewage treatment aeration tank drainage structure has the following beneficial effects that the cleaning assembly is arranged, so that as long as the overflow weir assembly continuously rotates, the cleaning assembly can continuously carry out self-cleaning on an overflow annular groove, and the overflow weir assembly is not damaged; the overflow weir assembly is arranged in the overflow weir assembly, so that the overflow annular groove is always in a clean state, the situation that blockage is formed by deposition on the surface of the overflow weir, and normal overflow of water flow is affected is effectively prevented, manual regular cleaning is not needed, and the use stability of the whole drainage structure is greatly improved; the situation that the surface of the cleaning assembly is full of dirt and influences normal rotation work of the overflow weir assembly is avoided, the overflow weir assembly and the cleaning assembly conduct self-cleaning mutually, and work of the overflow weir assembly and work of the cleaning assembly can be in a stable state to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to a self-cleaning sewage treatment aeration tank drainage structure. Background Art

[0002] The drainage structure of aeration tank for sewage treatment usually refers to the part of aeration tank design used to discharge water that has been treated to meet certain discharge standards. Aeration tank is the core unit in sewage treatment process, and is mainly used to promote aerobic microorganisms to oxidize and decompose organic pollutants in sewage through oxygenation.

[0003] An overflow weir is usually installed in the drainage structure of aeration tanks for sewage treatment. Since the sewage in the aeration tank contains a large amount of suspended solids, bioflocs, and impurities such as minerals that may precipitate, these substances may be deposited on the surface of the overflow weir during the water discharge process, forming blockages, affecting the normal overflow of water flow, and reducing the self-cleaning ability of the weir surface. Traditional fixed overflow weir structures are often difficult to implement convenient and effective cleaning and maintenance, especially when regular cleaning is required to maintain good working conditions. If there is no good self-cleaning mechanism, the workload and cost of manual maintenance will be increased. Therefore, we hope to design a sewage treatment aeration tank drainage structure with a new structure to solve this problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a self-cleaning sewage treatment aeration tank drainage structure to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized by the following technical scheme: a self-cleaning sewage treatment aeration tank drainage structure, comprising: an aeration tank, a cleaning component and an overflow weir component, a plurality of cleaning components for self-cleaning the overflow weir component are arranged at the end of the aeration tank, an overflow weir component is rotatably installed at the end of the aeration tank, and a sewage collection port is arranged at the rear side of the aeration tank;

[0006] The front end of the aeration tank is provided with a plurality of drain outlets, and the front side of the bottom of the aeration tank is provided with an aeration assembly;

[0007] A brush plate is fixed at the upper end of the cleaning component, and the overflow weir component includes a roller, a convex ring portion and an impeller plate. A plurality of convex ring portions distributed at equal intervals and used to fix the impeller plate are arranged on the outer side of the roller, and a plurality of impeller plates distributed in a circular ring-shaped equally divided structure are fixed on the surface of the convex ring portion.

[0008] As a preferred embodiment, a scraper portion is provided on the rear side of the upper end of the cleaning component. The scraper portion is arranged in an arc-shaped structure. The height of the upper end of the cleaning component gradually increases from front to back. The arrangement of the cleaning component can self-clean the overflow weir component.

[0009] As a preferred embodiment, the brush plate 1 includes an arc plate and bristles, the arc plate is fixedly connected to the front side of the upper end of the cleaning component, and the curvature of the arc plate is the same as the curvature of the upper end of the cleaning component, the height of the bristles gradually shortens from front to back, and the curvature of the upper surface of the bristles is the same as the curvature of the arc plate.

[0010] As a preferred embodiment, an overflow annular groove for overflow is provided between every two of the convex annular portions, and the sum of the depth of the overflow annular groove and the height of the impeller plate matches the minimum height of the cleaning component.

[0011] As a preferred embodiment, a brush plate 2 is fixed on the left and right sides of each impeller plate, and the height of the brush plate 2 is the sum of the depth of the overflow ring groove and the height of the impeller plate. The brush plate 2 includes a metal plate and metal bristles, and the metal bristles are evenly fixed on the outer surface of the metal plate. The setting of the brush plate 2, in conjunction with the impeller plate, can clean the surface of the cleaning component.

[0012] As a preferred embodiment, the radial inner wall of the overflow ring groove is rollingly connected to the scraper portion, and a gap of no more than 1 mm is provided between the radial inner wall of the overflow ring groove and the top end of the scraper portion, the radial inner wall of the lower end of the overflow ring groove abuts against the upper ends of the bristles on the brush plate 1, and the center of the brush plate 1 is colinear with the axis of the overflow ring groove.

[0013] As a preferred embodiment, the width of the impeller plate is the same as the transverse width of the convex ring portion, and the impeller plate is a reversely curved arc plate.

[0014] After adopting the above technical solution, the beneficial effects of the utility model are: by setting the cleaning component, it is effectively prevented that the surface of the overflow weir is deposited to form blockages and affect the normal overflow of water flow, and no manual regular cleaning is required, which greatly improves the use stability of the entire drainage structure;

[0015] By arranging a reversely curved impeller plate on the convex ring portion of the overflow weir assembly, the surface of the cleaning assembly is prevented from being covered with dirt to affect the normal rotation of the overflow weir assembly. The overflow weir assembly and the cleaning assembly are self-cleaning to each other, which can maximize the stability of each other's work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a self-cleaning sewage treatment aeration tank drainage structure.

[0018] Figure 2 It is a schematic diagram of the connection between an overflow weir component and a cleaning component of a self-cleaning sewage treatment aeration tank drainage structure of the utility model.

[0019] Figure 3 for Figure 1 A is an enlarged schematic diagram.

[0020] Figure 4 It is a schematic diagram of the cleaning component structure of a self-cleaning sewage treatment aeration tank drainage structure of the utility model.

[0021] In the figure, 100-aeration tank, 110-aeration assembly, 120-drain outlet, 130-sewage collection outlet;

[0022] 200-cleaning assembly, 210-scraper portion, 220-brush plate 1, 221-arc plate, 222-brush hair;

[0023] 300-overflow weir assembly, 310-convex ring, 320-overflow ring groove, 330-impeller plate, 340-brush plate 2, 350-drum. DETAILED DESCRIPTION

[0024] 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 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.

[0025] See also Figures 1 to 4 The utility model provides a technical solution: a self-cleaning sewage treatment aeration tank 100 drainage structure, comprising: an aeration tank 100, a cleaning assembly 200 and an overflow weir assembly 300, a plurality of cleaning assemblies 200 for self-cleaning the overflow weir assembly 300 are arranged at the end of the aeration tank 100, an overflow weir assembly 300 is rotatably installed at the end of the aeration tank 100, and a sewage collection port 130 is arranged at the rear side of the aeration tank 100;

[0026] A plurality of drain ports 120 are provided at the front end of the aeration tank 100, and an aeration assembly 110 is installed at the front side of the bottom of the aeration tank 100;

[0027] A brush plate 220 is fixed at the upper end of the cleaning component 200, and the overflow weir component 300 includes a roller 350, a convex ring portion 310 and an impeller plate 330. A plurality of convex ring portions 310 distributed at equal intervals and used to fix the impeller plate 330 are arranged on the outer side of the roller 350, and a plurality of impeller plates 330 distributed in a circular ring-shaped equally divided structure are fixed on the surface of the convex ring portion 310.

[0028] See also Figure 1 , Figure 2 as well as Figure 4 A scraper portion 210 is arranged at the rear side of the upper end of the cleaning component 200. The scraper portion 210 is arranged in an arc-shaped structure. The height of the upper end of the cleaning component 200 gradually increases from front to back. The arrangement of the cleaning component 200 can self-clean the overflow weir component 300.

[0029] Brush plate 220 includes an arc plate 221 and bristles 222. The arc plate 221 is fixedly connected to the front side of the upper end of the cleaning component 200, and the curvature of the arc plate 221 is the same as the curvature of the upper end of the cleaning component 200. The height of the bristles 222 gradually becomes shorter from front to back, and the curvature of the upper surface of the bristles 222 is the same as the curvature of the arc plate 221.

[0030] An overflow annular groove 320 for overflow is disposed between every two convex annular portions 310 , and the sum of the depth of the overflow annular groove 320 and the height of the impeller plate 330 matches the minimum height of the cleaning assembly 200 .

[0031] As the first embodiment of the utility model, in actual use, when the roller 350 of the overflow weir assembly 300 rotates (clockwise), the multiple overflow annular grooves 320 located on the roller 350 are partially connected to the scraper portion 210 at the upper end of the corresponding cleaning assembly 200. If there is dirt adhering to the radial inner wall of the overflow annular groove 320, when passing through the scraper portion 210, the scraper portion 210 will remove the dirt adhering to the radial inner wall of the overflow annular groove 320. Under the action of the water flow, the dirt is brought to the sewage collection port 130 and gathered in the sewage collection port 130 under the action of its own gravity. The radial part of the overflow annular groove 320 that has been removed may also There is some residue, which reaches the position of the brush plate 220 on the upper side of the cleaning component 200 as the roller 350 continues to rotate. Since the bristles 222 of the arc-shaped structure on the upper side of the brush plate 220 fit the radial inner wall of the overflow ring groove 320, the residual dirt will be cleaned by the bristles 222. As long as the overflow weir component 300 continues to rotate, the cleaning component 200 will continue to self-clean the overflow ring groove 320, so that the overflow ring groove 320 is always in a clean state, effectively preventing the overflow weir surface from depositing and forming blockages to affect the normal overflow of water flow, and no manual regular cleaning is required, which greatly improves the stability of the entire drainage structure.

[0032] See also Figures 1 to 4A brush plate 2 340 is fixed to the left and right sides of each impeller plate 330. The height of the brush plate 2 340 is the sum of the depth of the overflow ring groove 320 and the height of the impeller plate 330. The brush plate 2 340 includes a metal plate and metal bristles 222. The metal bristles 222 are evenly fixed on the outer surface of the metal plate. The setting of the brush plate 240, in conjunction with the impeller plate 330, can clean the surface of the cleaning component 200.

[0033] The radial inner wall of the overflow ring groove 320 is rollingly connected to the scraper portion 210, and a gap of no more than 1 mm is provided between the radial inner wall of the overflow ring groove 320 and the top of the scraper portion 210, the radial inner wall at the lower end of the overflow ring groove 320 abuts against the upper end of the bristles 222 on the brush plate 220, and the center of the brush plate 220 is colinear with the axis of the overflow ring groove 320.

[0034] The width of the impeller plate 330 is the same as the transverse width of the convex ring portion 310 , and the impeller plate 330 is a reversely curved arc plate.

[0035] As a second embodiment of the present utility model, based on the above-mentioned first embodiment, when the water in the aeration tank 100 moves toward the drum 350, it will form an impact force on the multiple impeller plates 330, and the impeller plates 330 will convert the impact force into a driving force for the rotation of the drum 350, thereby causing the entire overflow weir assembly 300 to rotate (in actual use, a motor can be set on either side of the aeration tank 100, and a clockwise rotation force is given to the overflow weir assembly 300 that has just been started through the transmission method of the motor and the transmission belt, so that it can be guaranteed to rotate clockwise, or a water wheel and a transmission belt structure are used to assist the overflow weir assembly 300 to rotate clockwise, as long as the overflow weir assembly 300 is guaranteed to rotate clockwise, the clockwise rotating overflow weir assembly 30 0, which can reduce the discharge amount of activated sludge in the aeration tank 100 and prevent a large amount of activated sludge from being quickly discharged from the aeration tank 100 through the bottom of the overflow weir assembly 300). The rotation of the drum 350 synchronously drives the impeller plate 330 to rotate. When the impeller plate 330 passes through multiple cleaning components 200, a brush plate 2 340 is fixed on the left and right sides of the impeller plate 330, respectively. When the impeller plate 330 moves to the cleaning component 200, the brush plates 2 340 arranged on both sides clean the side surface of the cleaning component 200, so as to prevent the surface of the cleaning component 200 from being covered with dirt and affecting the normal rotation of the overflow weir assembly 300. The overflow weir assembly 300 and the cleaning component 200 are mutually self-cleaning, which can maximize the stability of each other's work.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning sewage treatment aeration tank drainage structure, comprising: An aeration tank (100), a cleaning assembly (200) and an overflow weir assembly (300), characterized in that a plurality of cleaning assemblies (200) for self-cleaning the overflow weir assembly (300) are arranged at the end of the aeration tank (100), the overflow weir assembly (300) is rotatably mounted at the end of the aeration tank (100), and a sewage collection port (130) is arranged at the rear side of the aeration tank (100); The front end of the aeration tank (100) is provided with a plurality of drainage ports (120), and the front side of the bottom of the aeration tank (100) is provided with an aeration assembly (110); A brush plate (220) is fixed at the upper end of the cleaning assembly (200); the overflow weir assembly (300) comprises a roller (350), a convex ring portion (310) and an impeller plate (330); a plurality of convex ring portions (310) which are distributed at equal intervals and are used to fix the impeller plate (330) are arranged on the outer side of the roller (350); a plurality of impeller plates (330) which are distributed in a circular ring-shaped equally divided structure are fixed on the surface of the convex ring portion (310).

2. A self-cleaning sewage treatment aeration tank drainage structure as claimed in claim 1, characterized in that: A scraper portion (210) is arranged at the rear side of the upper end of the cleaning component (200); the scraper portion (210) is arranged in an arc-shaped structure; and the height of the upper end of the cleaning component (200) gradually increases from front to back.

3. A self-cleaning sewage treatment aeration tank drainage structure as claimed in claim 2, characterized in that: The brush plate 1 (220) comprises an arc plate (221) and bristles (222); the arc plate (221) is fixedly connected to the front side of the upper end of the cleaning component (200); the curvature of the arc plate (221) is the same as the curvature of the upper end of the cleaning component (200); the height of the bristles (222) gradually decreases from front to back; and the curvature of the upper surface of the bristles (222) is the same as the curvature of the arc plate (221).

4. A self-cleaning sewage treatment aeration tank drainage structure as claimed in claim 3, characterized in that: An overflow annular groove (320) for overflow is provided between every two of the convex annular portions (310), and the sum of the depth of the overflow annular groove (320) and the height of the impeller plate (330) matches the minimum height of the cleaning component (200).

5. A self-cleaning sewage treatment aeration tank drainage structure as claimed in claim 4, characterized in that: A brush plate 2 (340) is fixed to the left and right sides of each impeller plate (330), respectively. The height of the brush plate 2 (340) is the sum of the depth of the overflow ring groove (320) and the height of the impeller plate (330). The brush plate 2 (340) includes a metal plate and metal bristles (222). The metal bristles (222) are evenly fixed on the outer surface of the metal plate.

6. A self-cleaning sewage treatment aeration tank drainage structure as claimed in claim 5, characterized in that: The radial inner wall of the overflow annular groove (320) is rollingly connected to the scraper portion (210), and a gap of no more than 1 mm is provided between the radial inner wall of the overflow annular groove (320) and the top of the scraper portion (210), the radial inner wall at the lower end of the overflow annular groove (320) abuts against the upper end of the bristles (222) on the brush plate (220), and the center of the circle of the brush plate (220) is colinear with the axis of the overflow annular groove (320).

7. A self-cleaning sewage treatment aeration tank drainage structure as claimed in claim 1, characterized in that: The width of the impeller plate (330) is the same as the transverse width of the convex ring portion (310), and the impeller plate (330) is a reversely curved arc plate.

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