Domestic sewage self-flowing interlayer efficient oil removal device

Abstract

The utility model provides a domestic sewage self-flowing interlayer high-efficiency oil removal device which comprises a tank body, a plurality of stages of self-flowing interlayer oil removers are arranged on the tank body, each stage of self-flowing interlayer oil remover is of an interlayer type and is formed by welding two steel plates, and the two steel plates of the self-flowing interlayer oil remover form an opening with one long and the other short. Due to the fact that the self-flowing interlayer degreaser is designed to be in an interlayer type, the contact area of sewage and the interlayer is guaranteed to the maximum extent, the flow speed of the sewage is reduced, the retention time of the sewage passing through the interlayer device is prolonged, precipitation of oil stains in the sewage is effectively improved, three levels are designed, and the problems that the oil stains in the sewage are difficult to precipitate, the precipitation rate is low and the like can be thoroughly solved.

Description

Technical Field

[0001] The utility model belongs to sewage treatment equipment, in particular to a self-flowing interlayer high-efficiency oil removal device for domestic sewage. Background Art

[0002] The key to domestic sewage treatment and oil removal equipment lies in the sewage treatment capacity and oil removal effect. At present, the main problem is that the treatment capacity and oil removal effect cannot be achieved at the same time. The main reason is that most traditional oil removal devices use pipes or overflow methods to drain and remove oil. There is insufficient contact area between the sewage and the device, and the sewage does not have enough time to automatically precipitate oil stains, resulting in unsatisfactory oil removal effect, which causes great passivity to subsequent sewage treatment.

[0003] Patent No. CN116813022A "An efficient oil removal device for kitchen wastewater in the catering industry" discloses an efficient oil removal device for kitchen wastewater in the catering industry, including a box, a lower plate is rotatably connected to the middle of the lower wall of the box, a central axis is fixedly connected to the middle of the lower plate, an oil suction box is slidably connected to the central axis, a soft oil outlet pipe is connected to the side wall of the oil suction box, a piston plate is slidably connected to the inner seal of the box, a lower valve is provided on the piston plate, an upper valve is provided on the upper wall of the box, and a hose is connected between the upper valve and the lower valve. The shortcomings of this invention are that the oil removal device fails to achieve automation and continuity, has low processing capacity, and has high operating costs.

[0004] The patent number is "CN 213803027U, a grease trap for treating domestic sewage in urban residents", which includes a pit dug underground, a concrete cushion layer is provided at the bottom of the pit, a tank body is provided in the pit on the top of the concrete cushion layer, the inner cavity of the tank body is divided by a vertical partition to form an inlet chamber and an outlet chamber, an inlet pipe is provided on the upper part of the tank body of the inlet chamber, an outlet pipe is provided on the upper part of the tank body of the outlet chamber, a filter tube is provided on the vertical partition, an inspection cover is buckled on the top of the tank body, and coarse sand is filled between the outer wall of the tank body and the inner wall of the pit. The main problems of this device are insufficient contact area in sewage treatment and insufficient residence time during wastewater oil separation, resulting in poor oil removal effect. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a domestic sewage gravity interlayer high-efficiency oil removal device.

[0006] The technical solution of the utility model is implemented as follows: a self-flowing sandwich high-efficiency oil removal device for domestic sewage, comprising a tank body, a sandwich oil remover is arranged on the tank body, the sandwich oil remover comprises multiple stages, each stage of the sandwich oil remover is a sandwich type, welded from two steel plates, the two steel plates of the sandwich oil remover are one long and one short to form an opening;

[0007] Preferably, the interlayer degreaser is configured as a primary degreaser, a secondary degreaser and a tertiary degreaser, and the three-stage degreasers are arranged in a row in the tank body;

[0008] Preferably, the interlayer spacing of the interlayer degreaser is 2.0 cm;

[0009] Preferably, the liquid level height at the bottom of the three-stage interlayer oil remover gradually decreases from high to low.

[0010] The beneficial effect of the utility model is as follows: the utility model sets a multi-stage self-flowing sandwich degreaser, and the domestic sewage flows into the tank body through the inlet pipe. After reaching a certain liquid level, it enters the first-stage self-flowing sandwich degreaser through the self-pressure of the water to achieve precipitation and oil removal, and then the sewage after oil removal by the second and third-stage sandwich degreasers flows into the next process through the outlet pipe. Because the self-flowing sandwich degreaser is designed as a sandwich type, the contact area between the sewage and the sandwich is guaranteed to the maximum extent, and the flow rate of the sewage is reduced, the residence time of the sewage passing through the sandwich device is prolonged, and the precipitation of oil stains in the sewage is effectively improved. The three-stage design can completely solve the problems of difficulty in precipitating oil stains in sewage and low precipitation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 For this utility model Figure 1 Top view of the .

[0013] Parts description: 1. Inlet pipe, 2. Sandwich oil remover, 22. First-stage oil remover, 22. Second-stage oil remover, 23. Third-stage oil remover, 3. Outlet pipe, 4. Trough body, 5. Opening. DETAILED DESCRIPTION

[0014] 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 of the embodiments.

[0015] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0016] Refer to the attached Figure 1-2A domestic sewage self-flowing interlayer high-efficiency oil removal device comprises a tank body 4, an inlet pipe 1 and an outlet pipe 3 are respectively arranged at both ends of the tank body 4, a self-flowing interlayer oil remover 2 is welded on the tank body 4, and the self-flowing interlayer oil remover 2 is set to three levels: a primary oil remover 21, a secondary oil remover 22 and a tertiary oil remover 23, and the three-level oil removers are arranged in a row in the tank body 4; when the sewage passes through the self-flowing interlayer oil remover, the oil stains will automatically precipitate, because the specific gravity of the oil stains is less than the specific gravity of water, the precipitated oil stains will be enriched on the liquid surface between the two automatic interlayer oil removers, and they are manually removed regularly with a colander, thereby achieving the purpose of removing oil from the wastewater. The lower liquid level heights of the primary oil remover 21, the secondary oil remover 22 and the tertiary oil remover 23 are 35.0 cm, 30.0 cm and 25.0 cm respectively, and the liquid level height is from high to low. The liquid level can be controlled according to the actual amount of domestic sewage to achieve the increase or decrease of the treatment volume.

[0017] Specifically, domestic sewage flows by gravity into the tank through the inlet pipe. When the liquid level in the tank reaches the height of the first-stage oil remover, the sewage in the tank uses its own water pressure to press the sewage into the first-stage gravity interlayer oil remover. When the sewage slowly passes through the gravity interlayer oil remover, the oil stains in the water will automatically precipitate. The precipitated oil stains use water as a carrier and flow into the space between the two automatic interlayer oil removers and float on the liquid surface. They are removed by manual scooping and then pass through the second and third stages. The sewage after three degreasings flows into the next process through the outlet pipe.

[0018] The utility model sandwich oil remover adopts steel plates welded into sandwiches. According to the designed sewage treatment capacity, the sandwich spacing and surface area are strictly controlled. By selecting the size of the plate, the oil removal area is maximized in a limited space. And by strictly controlling the sandwich spacing, the flow rate of sewage through the sandwich is effectively reduced under the reasonable matching design of the sandwich surface and spacing, and the residence time of sewage passing through is greatly increased. Due to the extension of the passing time, the oil stains in the sewage can be naturally precipitated better, and the oil removal effect is improved, which solves the problem that various harmless oil removal facilities rely on the natural precipitation of oil stains from sewage, but the precipitation is not thorough and the oil removal effect is poor due to the excessive flow rate. At the same time, by controlling the liquid level and using the water's own pressure to automatically and evenly inlet water, stable and continuous water inlet is achieved for oil removal, achieving the automation, continuity and cost-free operation of sewage oil removal treatment.

[0019] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A domestic sewage self-flowing interlayer high-efficiency oil removal device, comprising a tank body (4), wherein the two ends of the tank body (4) are respectively provided with an inlet pipe (1) and an outlet pipe (3), characterized in that The tank body (4) is provided with a sandwich oil remover (2), the sandwich oil remover (2) comprising multiple stages, each stage of the sandwich oil remover (2) being of a sandwich type and welded from two steel plates, the two steel plates of the sandwich oil remover (2) being one long and one short to form an opening (5).

2. A domestic sewage self-flowing interlayer high-efficiency oil removal device as claimed in claim 1, characterized in that The interlayer deoiler (2) is configured as a primary deoiler (21), a secondary deoiler (22) and a tertiary deoiler (23), and the three-stage deoilers are arranged in a row in the tank body (4).

3. A domestic sewage self-flowing interlayer high-efficiency oil removal device as claimed in claim 1 or 2, characterized in that The interlayer spacing of the interlayer degreaser (2) is 2.0 cm.

4. A domestic sewage self-flowing interlayer high-efficiency oil removal device as claimed in claim 2, characterized in that The liquid level height at the bottom of the three-stage oil remover of the interlayer oil remover (2) gradually decreases from high to low.

Images