Primary sedimentation tank provided with full-water-surface slag scraping device

Abstract

The utility model discloses a primary sedimentation tank provided with a full-water-surface slag scraping device, relates to the technical field of sewage treatment, and aims to solve the problems that a tank body in the prior art is simple in design structure, few in function and relatively waste, and the tank body needs to be cleaned frequently, so that a large amount of time and labor are wasted. A water surface slag scraping mechanism is arranged on the surface of the tank body, a dosing area is arranged on the tank body on the right side of the water surface slag scraping mechanism, a slag collecting channel is arranged on the left side of the dosing area, an aeration pipe is arranged at the bottom of the dosing area, a water distribution area is arranged on the outer side of the dosing area, the dosing area is communicated with the water distribution area, a sludge hopper is arranged at the bottom of the tank body, and a sludge pump is arranged at the bottom of the sludge hopper. According to the primary sedimentation tank, the water distribution area is located above the sludge hopper on the water inlet side of the primary sedimentation tank, the first dosing area and the second dosing area are located in the water distribution area, the length of the tank body can be shortened, and sediments can be rapidly concentrated together and discharged through the sludge pump by adopting the conical-hopper-shaped sludge hopper at the bottom of the tank.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a primary sedimentation tank equipped with a full-surface scraping device. Background Art

[0002] The wastewater treatment process in the food processing field is generally divided into two stages: physical treatment and biochemical treatment. The main purpose of the physical treatment stage is to remove various suspended solids of various particle sizes that are insoluble in water through various means, thereby reducing the load of the subsequent biochemical treatment stage. This stage belongs to the extensive large-scale removal of pollutants. The biochemical treatment stage mainly deals with various pollutants dissolved in water and suspended solids that have not been removed in the previous physical stage. It belongs to the fine small-scale removal of pollutants.

[0003] During the physical treatment of wastewater, equipment like coarse screens and ultrafine screens primarily remove solid contaminants larger than 1mm. Solid contaminants smaller than 1mm, suspended solids, foam, and microorganisms are removed by flotation machines and primary sedimentation tanks. If the wastewater contains animal or vegetable oils, primary sedimentation tanks are typically used to remove the small suspended solids and the majority of the oil. However, existing technologies often lack the necessary design and functionality, resulting in a wasteful process. Furthermore, frequent cleaning of the tanks can be time-consuming and labor-intensive. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a primary sedimentation tank equipped with a full-surface scraping device, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned objectives, the present utility model discloses a primary sedimentation tank equipped with a full-surface scraping device, the technical solution adopted being: comprising a tank body, a water surface scraping mechanism provided on the surface of the tank body, a chemical dosing area provided on the tank body to the right of the water surface scraping mechanism, a slag collection channel provided on the left of the chemical dosing area, an air scoop provided at the bottom of the chemical dosing area, a water distribution area provided outside the chemical dosing area, the chemical dosing area being connected to the water distribution area, a sludge hopper provided at the bottom of the tank body, a sludge pump provided at the bottom of the sludge hopper, a sewage discharge pipe provided on the sewage pump, and the sewage discharge pipe extending outside the tank body.

[0006] As a preferred technical solution of the present utility model, the dosing area includes a first dosing area and a second dosing area, the first dosing area and the second dosing area are arranged side by side, and a connecting port is opened at the bottom of the partition between the first dosing area and the second dosing area. Different reagents can be added to the first dosing area and the second dosing area to complete the flocculation reaction of the sewage.

[0007] As an optimal technical solution of the present invention, a liquid outlet is opened above the side wall of the second dosing area, and the second dosing area is connected with the water distribution area through the liquid outlet. When the sewage fills the first dosing area and the second dosing area, it can enter the water distribution area from the liquid outlet.

[0008] As an optimal technical solution of the present invention, a water hole is opened at the bottom of the water distribution area, and the water distribution area is connected with the sludge hopper through the water hole. The water hole is located at the edge of the sludge hopper, and the water distribution area guides the sewage to flow in evenly along the edge of the sludge hopper.

[0009] As an optimal technical solution of the present invention, a mud pump installation well is opened on one side of the top of the pool body, and the sewage pipe of the sludge pump passes through the mud pump installation well. The sewage pipe extends through the mud pump installation well to the outside of the pool body to discharge the dirt that sinks to the bottom of the pool body out of the pool.

[0010] As an optimal technical solution of the present invention, a guide slope is provided at the top of the slag collecting channel near the water surface scraping mechanism. When the water surface scraping mechanism is working, the guide slope is used to guide the scraped dirt into the interior of the slag collecting channel.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention locates the water distribution area above the sludge hopper on the water inlet side of the primary sedimentation tank, and the first dosing area and the second dosing area are located in the water distribution area. This arrangement can shorten the length of the tank body, reduce the volume and reduce the investment cost. By adopting the conical sludge hopper at the bottom of the tank, the sediment can be quickly concentrated together and discharged to the outside of the tank body through the sludge pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a cross-sectional view of the structure of the utility model Figure 1 ;

[0014] Figure 3 This is a cross-sectional view of the structure of the utility model Figure 2 ;

[0015] Figure 4 This is a top view of the structure of the utility model;

[0016] Figure 5 This is the AA sectional view of the structure of the present utility model.

[0017] In the figure: 1. Tank body; 2. Water surface scraping mechanism; 3. First dosing area; 301. Second dosing area; 302. Connecting port; 303. Liquid outlet; 4. Water distribution area; 401. Water hole; 5. Sludge hopper; 6. Sludge pump; 7. Air cascade pipe; 8. Sludge collecting channel; 801. Guide slope; 9. Mud pump installation well. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0019] like Figures 1 to 5 As shown, the utility model discloses a primary sedimentation tank equipped with a full-surface scraping device, and the technical solution adopted is as follows: comprising a tank body 1, a water surface scraping mechanism 2 is provided on the surface of the tank body 1, a sludge hopper 5 is provided at the bottom of the tank body 1 below the water surface scraping mechanism 2, two sludge hoppers 5 are arranged in parallel at the bottom of the tank body 1, a mud pump installation well 9 is opened above the surface of the tank body 1, there are two mud pump installation wells 9, and they are arranged in parallel on the tank body 1, a dosing area is provided on the tank body 1 on the right side of the water surface scraping mechanism 2, a slag collecting channel 8 is provided on the side of the dosing tank on the right side of the water surface scraping mechanism 2, a guide slope 801 is provided on the left side of the slag collecting channel 8, an air waterfall pipe 7 is provided at the bottom of the dosing area, and the dosing area includes a first dosing area 3 and a second dosing area 301, the first dosing area 3 and the second dosing area A connecting port 302 is provided at the bottom of the partition between 301, and the waterfall pipe 7 is fixed to the bottom of the first dosing area 3 and the second dosing area 301 through the connecting port 302. The dosing area is located inside the water distribution area 4, and a liquid outlet 303 is provided on the top of the partition between the second dosing area 301 and the water distribution area 4. The second dosing area 301 is connected to the water distribution area 4 through the liquid outlet 303. A water through hole 401 is provided at the bottom of the water distribution area 4. There are multiple water through holes 401 and a linear array to the bottom of the water distribution area 4. The water through hole 401 is located at the edge of the sludge hopper 5. The water distribution area 4 is connected to the sludge hopper 5 through the water through hole 401. There is a sludge pump 6 at the bottom of the sludge hopper 5, and the sewage pipe of the sludge pump 6 extends to the outside of the pool body 1 through the mud pump installation well 9.

[0020] The working principle of the present invention is as follows: when treating sewage, first add the agent to the first dosing area 3 and the second dosing area 301, then pour the sewage from the first dosing area 3, the sewage enters the second dosing area 301 from the connecting port 302, and is stirred by gas through the waterfall pipe 7 to complete the flocculation reaction. When the liquid level gradually rises, the sewage enters the water distribution area 4 through the liquid outlet 303, and flows along the edge of the sludge hopper 5 through the water hole 401 at the bottom of the water distribution area 4 to the bottom of the sludge hopper 5 until the sewage is gradually filled. At this time, the suspended matter with a density less than that of water floats on the surface, and is scraped to the inside of the sludge collecting channel 8 through the guide slope 801 by the water surface scraping mechanism 2. The suspended matter with a density greater than that of water will settle at the bottom of the sludge hopper 5, and then the precipitate will be discharged to the outside of the pool body 1 through the sewage pipe through the sludge pump 6.

[0021] The circuits and mechanical connections involved in the present invention are conventional means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and they belong to common knowledge.

[0022] Components not described in detail herein are prior art.

[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A primary sedimentation tank equipped with a full-surface scraping device, comprising a tank body (1), characterized in that: The surface of the tank body (1) is provided with a water surface scraping mechanism (2), a dosing area is provided on the tank body (1) on the right side of the water surface scraping mechanism (2), a slag collecting channel (8) is provided on the left side of the dosing area, an air scoop (7) is provided at the bottom of the dosing area, a water distribution area (4) is provided outside the dosing area, and the dosing area is connected to the water distribution area (4), a sludge hopper (5) is provided at the bottom of the tank body (1), a sludge pump (6) is provided at the bottom of the sludge hopper (5), a sewage discharge pipe is provided on the sludge pump (6), and the sewage discharge pipe extends to the outside of the tank body (1).

2. A primary sedimentation tank equipped with a full-surface scraping device according to claim 1, characterized in that: The dosing area comprises a first dosing area (3) and a second dosing area (301), wherein the first dosing area (3) and the second dosing area (301) are arranged side by side, and a communication opening (302) is provided at the bottom of a partition between the first dosing area (3) and the second dosing area (301).

3. A primary sedimentation tank equipped with a full-surface scraping device according to claim 2, characterized in that: A liquid outlet (303) is provided above the side wall of the second dosing area (301), and the second dosing area (301) is connected to the water distribution area (4) through the liquid outlet (303).

4. A primary sedimentation tank equipped with a full-surface scraping device according to claim 3, characterized in that: A water hole (401) is provided at the bottom of the water distribution area (4), and the water distribution area (4) is connected to the sludge hopper (5) through the water hole (401). The water hole (401) is located at the edge of the sludge hopper (5).

5. A primary sedimentation tank equipped with a full-surface scraping device according to claim 4, characterized in that: A mud pump installation well (9) is provided on one side of the top of the tank body (1), a sewage discharge pipe of the sludge pump (6) passes through the mud pump installation well (9), and the sewage discharge pipe extends through the mud pump installation well (9) to the outside of the tank body (1).

6. A primary sedimentation tank equipped with a full-surface scraping device according to claim 1, characterized in that: A guide slope (801) is provided at the top of the slag collecting channel (8) near the water surface scraping mechanism (2).

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