A preliminary interception device for treating livestock and poultry breeding wastewater
By designing a device with a primary filter screen and a secondary flip-up filter screen, the problems of easy clogging and high maintenance costs of traditional livestock and poultry breeding wastewater pretreatment devices are solved, achieving efficient solid-liquid separation and low energy consumption pretreatment effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUOHUAN TECH DEV (HUBEI) CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional livestock and poultry wastewater pretreatment devices are prone to clogging, have high maintenance costs, and are not very effective at removing wastewater, making it difficult to cope with fluctuations in water quality and quantity.
A device comprising a primary filter screen and a secondary reversible filter screen was designed. By combining the gravity effect of wastewater and the decreasing filter pore size, automatic solid-liquid separation is achieved, and the angle of the reversible filter screen can be adjusted to adapt to changes in water quantity and quality.
It improves filtration efficiency, reduces equipment clogging and maintenance needs, lowers energy costs, and meets the pretreatment requirements for different water volumes and qualities.
Smart Images
Figure CN224422226U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, specifically to a preliminary interception device for treating livestock and poultry breeding wastewater. Background Technology
[0002] With population growth and rising demand for meat, intensive and large-scale farming has become the mainstream, but it has also led to a surge in wastewater discharge. Farming wastewater contains high concentrations of organic matter, nitrogen and phosphorus nutrients, pathogenic microorganisms, antibiotic residues, etc. If discharged directly, it will seriously pollute water bodies, soil and air.
[0003] Livestock and poultry breeding wastewater contains a large amount of suspended pollutants such as hair, undigested feed, and manure. It needs to be pretreated to remove these pollutants in the sewage treatment process. Currently, the traditional pretreatment process for livestock and poultry breeding wastewater in the market mostly uses mechanical bar screens. However, in actual operation, the bar screens are severely clogged due to fluctuations in water quality and quantity, resulting in poor removal of suspended solids. Manual cleaning is often required, which leads to high operation and maintenance costs for livestock and poultry breeding enterprises' wastewater treatment. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a preliminary interception device for treating livestock and poultry breeding wastewater, so as to overcome the shortcomings of the prior art.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0006] A preliminary interception device for treating livestock and poultry breeding wastewater includes: an outer shell with a top observation port; an inlet and an outlet are respectively provided on two opposite side walls of the outer shell; a primary filter screen, a baffle plate, and a secondary reversible filter screen are sequentially arranged between the inlet and outlet along the water flow direction inside the outer shell; the upper end of the primary filter screen is fixed to the top wall of the outer shell; the lower end of the primary filter screen is fixedly connected to a first vertical plate on the bottom wall of the outer shell; the upper end of the baffle plate is fixed to the top wall of the outer shell; a second vertical plate is provided on the bottom wall of the outer shell below the baffle plate; the gap between the baffle plate and the second vertical plate forms a water passage hole; the lower end of the secondary reversible filter screen is connected to a third vertical plate on the bottom wall of the outer shell by a hinge; multiple overlapping points are provided on the top wall of the outer shell between the baffle plate and the side wall with the outlet for detachable connection to the upper end of the secondary reversible filter screen; the upper end of the secondary reversible filter screen has a different inclination angle at different overlapping points.
[0007] Based on the above technical solution, the present invention can be further improved as follows.
[0008] Furthermore, the pore size of the primary filter grid is larger than that of the secondary flip-up filter grid.
[0009] Furthermore, the filter aperture of the primary filter grid is 10mm to 15mm, and the filter aperture of the secondary flip-up filter grid is 5mm to 8mm.
[0010] Furthermore, a primary screenings collection bucket is arranged inside the outer shell between the first vertical plate and the side wall of the outer shell where the water inlet is opened. The opening of the primary screenings collection bucket is lower than the lower end of the primary filter screen.
[0011] Furthermore, drainage outlets are reserved on the bottom and / or walls of the primary screenings collection bin.
[0012] Furthermore, the diameter of the drainage outlet reserved on the primary screenings collection bucket is 5mm to 8mm.
[0013] Furthermore, a secondary screenings collection bin is arranged inside the outer shell between the second and third vertical plates, and the opening of the secondary screenings collection bin is lower than the lower end of the secondary tiltable filter screen.
[0014] Furthermore, drainage outlets are reserved on the bottom and / or walls of the secondary screenings collection bin.
[0015] Furthermore, the diameter of the drainage outlet reserved on the primary screenings collection bucket is 3mm to 5mm.
[0016] Furthermore, the inlet is higher than the outlet.
[0017] The beneficial effects of this utility model are as follows:
[0018] 1. Integrated structure
[0019] This utility model will change the shortcomings of traditional livestock and poultry breeding wastewater pretreatment, such as easy clogging, high maintenance cost and poor pretreatment effect. It forms an intensive and efficient pretreatment device by organically coupling three functions: wastewater filtration, screenings pressing and solid-liquid separation. The outer shell is made of corrosion-resistant stainless steel, which is convenient for daily operation and maintenance. At the same time, it can be assembled in series or in parallel to meet the requirements of various livestock and poultry breeding wastewater pretreatment when dealing with different water volume and quality.
[0020] 2. Highly efficient precipitation separation structure
[0021] Relying on the gravity of wastewater and the separation structure design of the first-stage filter screen and the second-stage reversible filter screen, the solid-liquid separation of the incoming water can be achieved automatically without additional power. The pore size of the two filter screens decreases, which can effectively meet the solid content requirements of the effluent.
[0022] 3. Adaptive flip-up filter slant:
[0023] The angle of the secondary flip-up filter can be flexibly adjusted according to the characteristics of the incoming water volume and quality, thereby improving the filtration efficiency of the secondary filtration zone, solving the problem of easy clogging of traditional filter screens, and thus reducing the investment in equipment operation, management and maintenance.
[0024] 4. Operation without power:
[0025] It requires no additional power and relies solely on the kinetic energy of the incoming water to replace traditional mechanical bar screens, greatly reducing the energy consumption of mechanical equipment and thus effectively saving on daily electricity costs. Attached Figure Description
[0026] Figure 1 This is a structural diagram of the preliminary interception device for treating livestock and poultry breeding wastewater in this utility model.
[0027] The attached diagram lists the components represented by each number as follows:
[0028] 1. Outer shell; 110. Inlet; 120. Outlet; 130. First vertical plate; 140. Second vertical plate; 150. Water passage hole; 160. Third vertical plate; 2. Primary filter screen; 3. Baffle plate; 4. Secondary flip-up filter screen; 5. Hinge; 6. Primary screenings collection bucket; 7. Secondary screenings collection bucket. Detailed Implementation
[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0030] Example 1
[0031] like Figure 1As shown, a preliminary interception device for treating livestock and poultry breeding wastewater includes: a shell 1 with a top observation port, the shell 1 being made of corrosion-resistant stainless steel; an inlet 110 and an outlet 120 respectively provided on two opposite side walls of the shell 1, for example, from the perspective shown in the figure, the inlet 110 is located on the left side wall of the shell 1, and the outlet 120 is located on the right side wall of the shell 1. Of course, this is only described from this perspective, and if the perspective is changed, it is not excluded that the front and rear side walls are the opposite side walls; inside the shell 1, a primary filter inclined grid 2, a baffle plate 3, and a secondary flip-up filter inclined grid 4 are arranged sequentially along the water flow direction between the inlet 110 and the outlet 120. The primary filter inclined grid 2 is inclined, the upper end of the primary filter inclined grid 2 is fixed to the top wall of the shell 1, and the lower end of the primary filter inclined grid 2 is connected to the outer shell 1. The first vertical plate 130 on the bottom wall of the shell 1 is fixedly connected. The shell 1 forms a primary filtration zone between the primary filter grid 2 and the side wall of the shell 1 where the water inlet 110 is opened. The upper end of the baffle plate 3 is fixed to the top wall of the shell 1. The bottom wall of the shell 1 is provided with a second vertical plate 140 below the baffle plate 3. The gap between the baffle plate 3 and the second vertical plate 140 forms a water passage hole 150. The lower end of the secondary flip-up filter grid 4 is connected to the third vertical plate 160 on the bottom wall of the shell 1 by a hinge 5. The top wall of the shell 1 is provided with multiple overlapping points between the baffle plate 3 and the side wall where the water outlet 120 is opened for detachable connection with the upper end of the secondary flip-up filter grid 4. When the upper end of the secondary flip-up filter grid 4 is at different overlapping points, its (secondary flip-up filter grid 4) inclination angle is different, thereby forming a secondary filtration zone with different volumes.
[0032] Example 2
[0033] like Figure 1 As shown, this embodiment is a further improvement on embodiment 1, as detailed below:
[0034] The pore size of the primary filter grid 2 is larger than that of the secondary rotatable filter grid 4. The primary filter grid 2 will be used for coarse filtration, while the secondary rotatable filter grid 4 will be used for fine filtration. For example, the pore size of the primary filter grid 2 is 10mm to 15mm, and the pore size of the secondary rotatable filter grid 4 is 5mm to 8mm.
[0035] Example 3
[0036] like Figure 1 As shown, this embodiment is a further improvement on embodiment 1 or 2, as detailed below:
[0037] A primary screenings collection bucket 6 is arranged inside the outer casing 1 between the first vertical plate 130 and the side wall of the outer casing 1 where the water inlet 110 is opened. The opening of the primary screenings collection bucket 6 is lower than the lower end of the primary filter screen 2.
[0038] Furthermore, a drain outlet is provided on the bottom and / or wall of the primary screenings collection bucket 6, and the diameter of the drain outlet on the primary screenings collection bucket 6 is 5mm to 8mm.
[0039] Example 4
[0040] like Figure 1 As shown, this embodiment is a further improvement on embodiment 1, 2, or 3, as detailed below:
[0041] A secondary screenings collection bin 7 is arranged inside the outer casing 1 between the second vertical plate 140 and the third vertical plate 160. The opening of the secondary screenings collection bin 7 is lower than the lower end of the secondary reversible filter screen 4.
[0042] Furthermore, the bottom and / or wall of the secondary screenings collection bucket 7 are provided with drainage outlets, and the diameter of the drainage outlets provided on the primary screenings collection bucket 6 is 3mm to 5mm.
[0043] Example 5
[0044] like Figure 1 As shown, this embodiment is a further improvement on embodiment 1, 2, 3, or 4, as detailed below:
[0045] The inlet 110 is preferably located at a higher position than the outlet 120.
[0046] The workflow is as follows:
[0047] Livestock and poultry breeding wastewater enters the primary filtration zone through inlet 110. After being initially filtered by the primary filter screen 2, the wastewater enters the secondary filtration zone through the water passage 150. At the same time, large solid particles fall into the primary screen collection bucket 6 by their own gravity. Excess wastewater is discharged from the primary screen collection bucket 6 by gravity. Solid residue is regularly transported and disposed of manually.
[0048] Wastewater entering the secondary filtration zone is filtered twice by the secondary reversible screen 4. The wastewater is discharged through the outlet 120 into the deep treatment process section. Small solid particles fall into the secondary screenings collection bucket 7 by their own gravity. Excess wastewater is discharged from the secondary screenings collection bucket 7 by gravity. Solid residues are periodically transported and disposed of manually.
[0049] Meanwhile, when the incoming water volume is large, or when there is a lot of solid residue and hair in the sewage, which can easily clog the filter screen, the secondary flip-up filter screen 4 can be flipped to the position shown by the dotted line in the diagram to expand the volume of the secondary filtration zone. This will change the incoming water from pressure flow filtration to pressure flow filtration + gravity filtration mode, further improving the filtration effect.
[0050] The beneficial effects of this utility model are as follows:
[0051] 1. Integrated structure
[0052] This solution will overcome the shortcomings of traditional livestock and poultry breeding wastewater pretreatment, such as easy clogging, high maintenance costs, and poor pretreatment effect. It will form an intensive and efficient pretreatment device by organically coupling three functions: wastewater filtration, screenings pressing, and solid-liquid separation. The outer shell 1 is made of corrosion-resistant stainless steel, which is convenient for daily operation and maintenance. At the same time, it can be assembled in series or in parallel to meet the requirements of various livestock and poultry breeding wastewater pretreatment when dealing with different water volumes and qualities.
[0053] 2. Highly efficient precipitation separation structure
[0054] Relying on the gravity of wastewater and the separation structure design of the first-stage filter screen 2 and the second-stage reversible filter screen 4, the solid-liquid separation of the incoming water can be achieved automatically without additional power. The pore size of the two filter screens decreases, which can effectively meet the solid content requirements of the effluent.
[0055] 3. Adaptive flip-up filter slant:
[0056] The angle of the secondary flip-up filter can be flexibly adjusted according to the characteristics of the incoming water volume and quality, thereby improving the filtration efficiency of the secondary filtration zone, solving the problem of easy clogging of traditional filter screens, and thus reducing the investment in equipment operation, management and maintenance.
[0057] 4. Operation without power:
[0058] It requires no additional power and relies solely on the kinetic energy of the incoming water to replace traditional mechanical bar screens, greatly reducing the energy consumption of mechanical equipment and thus effectively saving on daily electricity costs.
[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A livestock and poultry breeding wastewater preliminary interception device, characterized in that, include: The outer shell (1) includes a top observation port. The outer shell (1) has an inlet (110) and an outlet (120) on two opposite side walls. Inside the outer shell (1), between the inlet (110) and outlet (120), a primary filter grid (2), a baffle plate (3), and a secondary reversible filter grid (4) are arranged sequentially along the water flow direction. The upper end of the primary filter grid (2) is fixed to the top wall of the outer shell (1), and the lower end of the primary filter grid (2) is fixedly connected to the first vertical plate (130) on the bottom wall of the outer shell (1). The upper end of the baffle plate (3) is fixed to the top wall of the outer shell (1). A second vertical plate (140) is provided on the bottom wall of the shell (1) below the baffle plate (3). The gap between the baffle plate (3) and the second vertical plate (140) forms a water passage hole (150). The lower end of the secondary reversible filter grid (4) is connected to the third vertical plate (160) on the bottom wall of the shell (1) by a hinge (5). On the top wall of the shell (1), there are multiple overlapping points between the baffle plate (3) and the side wall with the water outlet (120) for detachable connection with the upper end of the secondary reversible filter grid (4). The upper end of the secondary reversible filter grid (4) has different inclination angles when it is at different overlapping points.
2. The preliminary interception device for treating livestock and poultry breeding wastewater according to claim 1, characterized in that, The pore size of the primary filter grid (2) is larger than that of the secondary flip-up filter grid (4).
3. The preliminary interception device for treating livestock and poultry breeding wastewater according to claim 2, characterized in that, The filter aperture of the primary filter grid (2) is 10mm to 15mm, and the filter aperture of the secondary flip-up filter grid (4) is 5mm to 8mm.
4. The preliminary interception device for treating livestock and poultry breeding wastewater according to claim 1, characterized in that, A primary screenings collection bucket (6) is arranged inside the outer shell (1) between the first vertical plate (130) and the side wall of the outer shell (1) where the water inlet (110) is opened. The opening of the primary screenings collection bucket (6) is lower than the lower end of the primary filter screen (2).
5. The preliminary interception device for treating livestock and poultry breeding wastewater according to claim 4, characterized in that, The primary screenings collection bucket (6) has a pre-reserved drainage port on its bottom and / or wall.
6. The preliminary interception device for treating livestock and poultry breeding wastewater according to claim 5, characterized in that, The diameter of the drainage port reserved on the primary screenings collection bucket (6) is 5mm to 8mm.
7. The preliminary interception device for treating livestock and poultry breeding wastewater according to claim 1, characterized in that, A secondary screenings collection bucket (7) is arranged inside the outer shell (1) between the second vertical plate (140) and the third vertical plate (160). The opening of the secondary screenings collection bucket (7) is lower than the lower end of the secondary reversible filter screen (4).
8. The preliminary interception device for treating livestock and poultry breeding wastewater according to claim 7, characterized in that, The secondary screenings collection bucket (7) has a pre-reserved drainage port on the bottom and / or wall.
9. A preliminary interception device for treating livestock and poultry breeding wastewater according to claim 8, characterized in that, The diameter of the drainage port reserved on the primary screenings collection bucket (6) is 3mm to 5mm.
10. A preliminary interception device for treating livestock and poultry breeding wastewater according to any one of claims 1 to 9, characterized in that, The inlet (110) is higher than the outlet (120).