Sewage treatment device

Abstract

The sewage treatment device comprises a settling tank and a filtering tank which are communicated through a pump, and a filtering plate is arranged in the filtering tank; a scraping device is arranged above the filter plate and comprises a linear driver, the fixed end of the linear driver is connected to the side wall of the filter tank, the free end of the linear driver is connected with a filter plate brush, and the filter plate brush is in sliding contact with the upper surface of the filter plate and reciprocates along the diameter of the filter plate under the action of the linear driver; the filter plate brush comprises a first brush block, a second brush block and guide shafts, the guide shafts are arranged at the two ends of the first brush block in the length direction and extend outwards in the length direction of the first brush block, the second brush block is slidably connected to the outer ends of the guide shafts in a sleeving mode, the guide shafts are further sleeved with springs, and the two ends of the springs are in compression joint with the first brush block and the second brush block respectively; elastic brush heads are arranged on the bottom surfaces of the first brush block and the second brush block. The cleanliness of the filter plate can be improved, and blockage of the filter plate is reduced.

Description

Technical Field

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

[0002] Wastewater treatment is to subject wastewater to physical separation processes such as aeration and sedimentation, followed by biochemical treatment, and finally filtration to remove harmful substances and pollutants, thereby achieving safe discharge and recycling, improving the utilization rate of water resources, and minimizing pollution to the environment.

[0003] The filter plates in the filter tank of the existing sewage treatment device are fixedly arranged and are prone to clogging after a period of use, which affects the filtration efficiency. Therefore, the existing sewage treatment device is improved and the structure in the filter tank is optimized to facilitate timely cleaning of the filter plates and reduce clogging of the filter plates. Utility Model Content

[0004] In view of the problems and shortcomings in the prior art, the utility model provides a sewage treatment device.

[0005] The technical solution of this utility model is as follows:

[0006] A sewage treatment device comprises a sedimentation tank and a filter tank connected by a pump, wherein a filter plate is arranged in the filter tank, and is characterized in that:

[0007] A scraping device is provided above the filter plate, including a linear drive, a fixed end of which is connected to the side wall of the filter tank, and a filter plate brush is connected to the free end thereof. The filter plate brush is in sliding contact with the upper surface of the filter plate and reciprocates along the diameter of the filter plate under the action of the linear drive;

[0008] The filter plate brush comprises a first brush block, a second brush block and a guide shaft. The guide shaft is arranged at both ends of the first brush block in the length direction and extends outward along the length direction of the first brush block. The second brush block is slidably sleeved on the outer end of the guide shaft. A spring is also sleeved on the guide shaft, and its two ends are respectively crimped with the first brush block and the second brush block; elastic brush heads are arranged on the bottom surfaces of the first brush block and the second brush block.

[0009] Working principle:

[0010] The driver drives the filter plate brush to move rightward along the inner wall of the filter plate. Since the filter tank is a round tank, the filter plate is also a round plate with a corresponding size. During the movement of the filter plate brush, the chord length of the filter plate first increases and then decreases. At this time, the first brush block is in sliding contact with the middle part of the filter plate, and the second brush block moves inward or outward according to the chord length of the filter plate under the action of the guide shaft and the spring, so that the width of the filter plate brush is adapted to the size of the filter plate. At the same time, during the movement of the first brush block and the second brush block, the brush head contacts the surface of the filter plate, and the pollutants on the surface of the filter plate and the filter holes are brushed off, thereby reducing the blockage of the filter plate.

[0011] According to a specific embodiment, the second brush block is a right triangle block, with its inclined surface facing outward, and the side away from the linear drive is inclined inward, in order to reduce the resistance between the second brush block and the filter tank when the filter plate brush moves toward the end of the filter plate where the chord length is reduced. In a specific embodiment, the width of the first brush block is preferably 2-4cm, and the width of the second brush block and the adjacent plane is equal to the first brush block, in order to enable the edge of the filter plate to be cleaned by the second brush block. The brush heads are evenly spaced along the length direction of the first brush block, and the spacing is equal to the spacing of the filter holes on the filter plate, which is conducive to better contact with the filter holes in the filter plate and improve the cleanliness of the filter holes.

[0012] According to a specific embodiment, the sedimentation tank includes an aeration tank and a sedimentation tank arranged up and down, and the sedimentation tank and the aeration tank are selectively connected through a connecting pipe. The pollutants in the water are fully mixed with microorganisms through the aeration tank to preliminarily remove organic matter in the water. The sedimentation tank is arranged below the aeration tank, which is more conducive to the precipitation of granular pollutants. An agitator is connected to the aeration tank for transverse rotation. The agitator is driven by a motor connected to the sedimentation tank. The aeration of the aeration tank is accelerated by the agitator, and turbulence is generated at the bottom of the tank by the agitator, so that oxygen and organic matter are fully mixed, thereby improving the aeration effect. The inlet end of the pump is connected to the upper part of the sedimentation tank, and the outlet end is connected to the upper part of the filter tank.

[0013] The beneficial effects of the utility model are:

[0014] A scraping device is provided above the filter plate, including a linear drive, a fixed end of which is connected to the side wall of the filter tank, and a free end of which is connected to a filter plate brush, the filter plate brush is in sliding contact with the upper surface of the filter plate, and reciprocates along the diameter of the filter plate under the action of the linear drive; the filter plate brush includes a first brush block located in the middle and second brush blocks located on both sides of the first brush block, wherein the second brush block is connected to the first brush block through a guide shaft and a spring, and when the linear drive drives the filter plate brush to reciprocate along the diameter direction of the filter plate, the second brush block can move inward or outward along the length direction of the first filter plate brush under the action of the inner wall of the filter tank of the spring to match the width at different chord lengths on the filter plate, so that the filter plate brush contacts the filter holes on the filter plate as much as possible, brushes off the pollutants, improves the cleanliness of the filter plate, and reduces the clogging of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of an embodiment;

[0016] Figure 2 A top view of the scraping device in a first state;

[0017] Figure 3 is a top view of the scraping device in the second state;

[0018] 1. Sedimentation tank; 11. Sedimentation tank; 12. Aeration tank; 13. Agitator; 14. Connecting pipe; 2. Pump; 3. Filter tank; 31. Filter plate; 32. Linear drive; 33. Filter plate brush; 331. First brush block; 332. Second brush block; 333. Guide shaft; 334. Spring. DETAILED DESCRIPTION

[0019] The following will further describe the technical means adopted to achieve the predetermined inventive purpose of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0020] See also Figure 1 , a sewage treatment device, comprising a sedimentation tank 1 and a filter tank 3 connected by a pump 2, wherein a filter plate 31 is provided in the filter tank 3;

[0021] A scraping device is provided above the filter plate 31, including a linear drive 32, a fixed end of which is connected to the side wall of the filter tank 3, and a filter plate brush 33 is connected to the free end thereof. The filter plate brush 33 is in sliding contact with the upper surface of the filter plate 31, and reciprocates along the diameter of the filter plate 31 under the action of the linear drive 32;

[0022] See also Figure 2 and Figure 3 The filter plate brush 33 includes a first brush block 331, a second brush block 332 and a guide shaft 333. The guide shaft 333 is arranged at both ends of the first brush block 331 in the length direction and extends outward along the length direction of the first brush block 331. The second brush block 332 is slidably sleeved on the outer end of the guide shaft 333. The guide shaft 333 is also sleeved with a spring 334, and its two ends are respectively pressed with the first brush block 331 and the second brush block 332; the bottom surfaces of the first brush block 331 and the second brush block 332 are provided with elastic brush heads.

[0023] Working principle:

[0024] See also Figure 1-Figure 3 The driver drives the filter plate brush 33 to move rightward along the inner wall of the filter plate 31. Since the filter tank 3 is a circular tank, the filter plate 31 is also a circular plate of a corresponding size. During the movement of the filter plate brush 33, the chord length of the filter plate 31 first increases and then decreases. At this time, the first brush block 331 is in sliding contact with the middle part of the filter plate 31, and the second brush block 332 moves inward or outward according to the chord length of the filter plate 31 under the action of the guide shaft 333 and the spring 334, so that the width of the filter plate brush 33 is adapted to the size of the filter plate 31. At the same time, during the movement of the first brush block 331 and the second brush block 332, the brush head contacts the surface of the filter plate 31, and the pollutants on the surface of the filter plate 31 and the filter holes are brushed off, thereby reducing the blockage of the filter plate 31.

[0025] See also Figure 2According to a specific embodiment, the second brush block 332 is a right triangle block, with its inclined surface facing outward, and the side away from the linear drive 32 is inclined inward, in order to reduce the resistance between the second brush block 332 and the filter tank 3 when the filter plate brush 33 moves toward the end where the filter plate chord length is reduced. In a specific embodiment, the width of the first brush block 331 is preferably 2-4 cm, and the width of the second brush block 332 and the adjacent plane is equal to the first brush block 331, in order to enable the edge of the filter plate 31 to be cleaned by the second brush block 332. The brush heads are evenly spaced along the length direction of the first brush block 331, and the spacing is equal to the spacing of the filter holes on the filter plate 31, which is conducive to better contact with the filter holes in the filter plate 31 and improve the cleanliness of the filter holes.

[0026] See also Figure 1 According to a specific embodiment, the sedimentation tank 1 includes a sedimentation tank 11 and an aeration tank 12 arranged up and down, and the sedimentation tank 11 and the aeration tank 12 are selectively connected through a connecting pipe 14. The pollutants in the water are fully mixed with microorganisms through the aeration tank 12, and organic matter in the water is preliminarily removed. The sedimentation tank 11 is arranged below the aeration tank 12, which is more conducive to the precipitation of granular pollutants. An agitator 13 is connected to the aeration tank 12 for horizontal rotation. The agitator 13 is driven by a motor connected to the sedimentation tank 1. The aeration of the aeration tank 12 is accelerated by the agitator 13, and turbulence is generated at the bottom of the tank by the agitator 13, so that oxygen and organic matter are fully mixed, thereby improving the aeration effect. The inlet end of the pump 2 is connected to the upper part of the sedimentation tank 11, and the outlet end is connected to the upper part of the filter tank 3.

[0027] The above is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments and examples. Various changes, equivalent substitutions, improvements, etc. made within the knowledge scope of those skilled in the art without departing from the concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage treatment device, comprising a sedimentation tank (1) and a filter tank (3) connected by a pump (2), wherein a filter plate (31) is provided in the filter tank (3), characterized in that: A scraping device is provided above the filter plate (31), comprising a linear drive (32), a fixed end of which is connected to the side wall of the filter tank (3), and a free end of which is connected to a filter plate brush (33), wherein the filter plate brush (33) is in sliding contact with the upper surface of the filter plate and reciprocates along the diameter of the filter plate under the action of the linear drive (32); The filter plate brush (33) comprises a first brush block (331), a second brush block (332) and a guide shaft (333); the guide shaft is arranged at both ends of the first brush block (331) in the length direction and extends outward along the length direction of the first brush block (331); the second brush block (332) is slidably sleeved on the outer end of the guide shaft (333); a spring (334) is sleeved on the guide shaft, and its two ends are respectively pressed against the first brush block (331) and the second brush block (332); The bottom surfaces of the first brush block (331) and the second brush block (332) are provided with elastic brush heads.

2. The sewage treatment device according to claim 1, characterized in that: The second brush block (332) is a right-angled triangle block, with its inclined surface facing outward and the side away from the linear drive (32) tilting inward.

3. The sewage treatment device according to claim 2, characterized in that: The width of the first brush block (331) is 2-4 cm, and the width of the second brush block (332) and the adjacent plane is equal to the width of the second brush block (332).

4. The sewage treatment device according to any one of claims 1 to 3, characterized in that: The brush heads are evenly spaced along the length direction of the first brush block (331), and the spacing is equal to the spacing between the filter holes on the filter plate (31).

5. The sewage treatment device according to claim 4, characterized in that: The sedimentation tank (1) comprises an aeration tank (12) and a sedimentation tank (11) arranged one above the other. The sedimentation tank and the aeration tank are selectively connected via a connecting pipe (14).

6. The sewage treatment device according to claim 5, characterized in that: A stirrer (13) is connected in a transverse rotation manner in the aeration tank (12), and the stirrer is driven by a motor connected to the sedimentation tank (1).

7. The sewage treatment device according to claim 6, characterized in that: The inlet end of the pump (2) is communicated with the upper part of the sedimentation tank (11), and the outlet end is communicated with the upper part of the filter tank (3).

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