A solid-liquid separation device for manure in the environmental protection process of aquaculture.

Abstract

This invention relates to a solid-liquid separation device for manure in the environmental management process of livestock farming. The device includes a premixing bin, a linear vibrating screen, and an extrusion mechanism. The premixing bin is connected to the feed inlet of the linear vibrating screen via a feeding pump. The linear vibrating screen is higher than the extrusion mechanism, and its manure outlet is connected to the feed inlet of the extrusion mechanism. The extrusion mechanism has a manure outlet and a water outlet. Compared with existing technologies, this invention uses a premixing bin, a linear vibrating screen, and an extrusion mechanism to achieve solid-liquid separation of manure through a three-step process including liquid dilution, initial vibration dewatering, and deep extrusion dewatering. This solves the current problem of difficult dewatering of manure, especially sticky manure, and is also applicable to the dewatering treatment of kitchen waste residue.

Description

Technical Field

[0001] This invention belongs to the technical field of solid-liquid separation equipment, specifically a solid-liquid separation device for manure in the environmental protection process of aquaculture. Background Technology

[0002] Livestock manure causes agricultural pollution, necessitating its harmless or resource-based treatment. Before such treatment, efficient dry-wet separation is crucial. Animal feed and the stages of animal rearing can cause manure to be sticky, making dehydration difficult. Purely mechanical compression alone is insufficient to extract and separate the water.

[0003] Utility model CN209735127U discloses a solid-liquid separation system for pig manure treatment, comprising a water-cutting mesh solid-liquid separator, a drum screen, and a screw extrusion solid-liquid separator connected in sequence for solid-liquid separation of manure, and a solid manure conveying device at the bottom for conveying the solid manure after solid-liquid separation. The solid-liquid separation method of this system is difficult to achieve efficient treatment of highly viscous manure, and the conveying path of the manure through the conveying device is relatively long, making it easy for highly viscous manure to adhere to the device. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art in the low solid-liquid separation efficiency when treating sticky manure, and to provide a manure solid-liquid separation device for the environmental protection treatment process of aquaculture.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] This invention provides a solid-liquid separation device for manure in the environmental protection process of aquaculture, including a premixing bin, a linear vibrating screen and an extrusion mechanism. The premixing bin is connected to the vibrating screen inlet of the linear vibrating screen through a feeding pump. The linear vibrating screen is higher than the extrusion mechanism and the manure outlet of the linear vibrating screen is connected to the extruder inlet of the extrusion mechanism. The extrusion mechanism is provided with an extruder manure outlet and an extruder water outlet.

[0007] The linear vibrating screen includes a surrounding plate, a vibrating frame, a screen, a cover plate, and a vibrating motor. The surrounding plate, screen, and cover plate form a box-shaped structure, with the screen being the bottom surface of the box-shaped structure. The vibrating frame is fixedly connected to the surrounding plate, and the vibrating motor is fixedly connected to the screen. The feed inlet and discharge outlet of the vibrating screen are located at opposite ends of the linear vibrating screen, and a first moisture collector is provided below the screen.

[0008] The extrusion mechanism includes a housing, an extrusion motor, a rotating shaft, a spiral blade, and a top plate. The rotating shaft passes through the housing axially, and the spiral blade is located inside the housing and is fixedly wound around the rotating shaft. The extrusion motor and the top plate are respectively connected to the two ends of the rotating shaft. The extruder inlet is located on the upper surface of the housing near the extrusion motor. The extruder outlet is located on the lower edge of the side of the housing near the top plate. The extruder outlet is located on the lower surface of the housing. A second moisture collector is provided below the extruder outlet.

[0009] Furthermore, it also includes a support frame, on which the linear vibrating screen, extrusion mechanism, first moisture collector, and second moisture collector are mounted.

[0010] Furthermore, the linear vibrating screen also includes a first elastic element, and the vibrating frame and the support are fixedly connected through the first elastic element.

[0011] Furthermore, the extrusion mechanism also includes a second elastic element and an auxiliary frame. The end of the rotating shaft located on the outer side of the top plate is provided with a limiting plate. The auxiliary frame connects the outer edge of the outer shell and the limiting plate. The second elastic element connects the top plate and the limiting plate. The top plate can move axially along the rotating shaft.

[0012] Furthermore, the second elastic element is a spring, and the rotating shaft passes through the inside of the spring.

[0013] Furthermore, the premixed compartment is mounted on a support frame.

[0014] Furthermore, the first water collector includes a first plate structure and a first water pipe. One side of the first plate structure is recessed inward and the recessed side faces upward. One end of the first water pipe is connected to the first plate structure, and the first plate structure is mounted on a bracket.

[0015] Furthermore, the first water pipe connects the first plate structure and the premixed storage chamber.

[0016] Furthermore, the second water collector includes a second plate structure and a second water pipe. One side of the second plate structure is recessed inward and the recessed side faces upward. One end of the second water pipe is connected to the second plate structure, and the second plate structure is mounted on a bracket.

[0017] Furthermore, the second water pipe connects the second plate structure and the premixed container.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. This invention achieves solid-liquid separation of manure through a three-step process involving liquid dilution, initial vibration separation, and deep compression separation by setting up a premixing bin, a linear vibrating screen, and an extrusion mechanism. After being diluted in the premixing bin, the manure is transported to the linear vibrating screen by a feeding pump. The vibration of the linear vibrating screen initially separates the manure from the water while driving the solid manure towards the discharge direction of the vibrating screen. The solid manure falls from the manure outlet of the vibrating screen into the feed inlet of the extrusion machine of the extrusion mechanism. The rotating shaft in the extrusion mechanism drives the spiral blades to rotate, and the blades and the top plate together extrude the manure for further separation and push the manure towards the extrusion machine outlet. The three-step process has a good separation effect, and the manure transportation path is simplified, reducing the adhesion of manure to the device.

[0020] 2. The extrusion mechanism of the present invention utilizes the ingenious cooperation between the spiral blade, the top plate, and the second elastic element. The rotating shaft drives the spiral blade to rotate, pushing the feces towards the top plate. The top plate, supported by the second elastic element, resists the pushing of the spiral blade on the feces and extrudes the feces. At the same time, the second elastic element is compressed by force, and the top plate moves out of the outer shell of the extrusion mechanism, realizing the extrusion, dehydration, and automatic discharge of the feces. The structure and drive are simple and easy to implement.

[0021] 3. The present invention is equipped with a first water collector and a second water collector to collect the water separated twice during solid-liquid separation, so as to facilitate centralized processing or utilization. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the device structure;

[0023] Figure 2 This is a schematic diagram from the right side of the device;

[0024] Figure 3 This is a schematic cross-sectional view of the device;

[0025] In the diagram: 1. Support frame; 2. Enclosure; 3. Vibrating screen outlet; 4. Extruder inlet; 5. Extruder outlet; 6. Vibrating screen inlet; 7. Vibrating frame; 8. Screen; 9. Cover plate; 10. Vibrating motor; 11. Feed pump; 12. First plate structure; 13. First water pipe; 14. Outer shell; 15. Extrusion motor; 16. Rotating shaft; 17. Spiral blade; 18. Top plate; 19. Auxiliary frame; 20. Second plate structure; 21. Second water pipe; 22. Spring; 23. Premixing bin. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] like Figures 1-3As shown, this embodiment relates to a manure solid-liquid separation device for environmental management in aquaculture, including a premixing bin 23, a feeding pump 11, a linear vibrating screen, and an extrusion mechanism. The discharge end of the premixing bin 23 is connected to the inlet end of the feeding pump 11, and the discharge end of the feeding pump 11 is connected to the vibrating screen inlet 6 of the linear vibrating screen. The linear vibrating screen is higher than the extrusion mechanism, and the manure outlet 3 of the linear vibrating screen is connected to the extruder inlet 4 of the extrusion mechanism, so that the manure discharged from the manure outlet 3 of the vibrating screen can fall into the extruder inlet 4 of the extrusion mechanism. The extrusion mechanism is provided with an extruder manure outlet 5 and an extruder water outlet, and there is a preset distance between the extruder manure outlet 3 and the extruder water outlet 5.

[0033] In this embodiment, the linear vibrating screen includes a surrounding plate 2, a vibrating frame 7, a screen 8, a cover plate 9, and a vibrating motor 10. The surrounding plate 2, screen 8, and cover plate 9 form a box-shaped structure, with the screen 8 serving as the bottom surface of the box-shaped structure. The vibrating frame 7 is fixedly connected to the surrounding plate 2, and the vibrating motor 10 is fixedly connected to the screen 8. A first moisture collector is provided below the screen 8. The vibrating screen inlet 6 and the vibrating screen outlet 3 are located at opposite ends of the linear vibrating screen. In a preferred embodiment, the vibrating screen inlet 6 is an opening on the cover plate 9, and the vibrating screen outlet 3 is a notch left at one end of the box-shaped structure when the surrounding plate 2 forms the side wall of the box-shaped structure.

[0034] In use, the manure is first placed in the premixing bin 23 for preliminary treatment, which is to dilute the manure and precipitate out protein and fatty viscous substances. Then, the diluted manure is transported to the linear vibrating screen by the feed pump 11. The vibrating motor 10 drives the screen 8 to vibrate, separating the manure from the water for the first time. At the same time, the manure after the initial separation of water is transported on the linear vibrating screen to the extruder inlet 4 of the extrusion mechanism, while the water after the initial separation falls from the screen holes of the screen 8 to the bottom of the linear vibrating screen and enters the extrusion mechanism through the extruder inlet 4. Then, the extrusion mechanism squeezes the manure after the initial separation of water to dehydrate the manure again. The squeezed manure flows out from the extruder outlet 5, and the squeezed water flows out from the extruder outlet.

[0035] Specifically, after the manure enters the screen 8 through the feed inlet 6 of the vibrating screen, during vibration, the linear vibrating screen drives the solid manure towards the discharge outlet 3, while water flows from the screen 8 into the first water collector. The solid manure moves to the feed inlet 6 under the vibration of the screen 8. In a preferred embodiment, the screen 8 can be set at a certain inclination angle, such as 10 degrees, so that the height of the discharge outlet 3 is higher than the height of the feed inlet 6, facilitating solid-liquid separation of the manure.

[0036] In this embodiment, the extrusion mechanism includes a housing 14, an extrusion motor 15, a rotating shaft 16, a spiral blade 17, and a top plate 18. The rotating shaft 16 passes through the housing 14 axially, and the spiral blade 17 is located inside the housing 14 and fixedly wound around the rotating shaft 16. In a preferred embodiment, the spiral blade 17 is coaxial with the rotating shaft 16. The extrusion motor 15 and the top plate 18 are respectively connected to the two ends of the rotating shaft 16. The top plate 18 can move axially along the rotating shaft 16. In a preferred embodiment, the rotor of the extrusion motor 15 is fixedly connected to the rotating shaft 16, and the stator remains relatively stationary with respect to the housing 14. The extruder inlet 4 is located on the upper surface of the housing 14 near the extrusion motor 15 and is open. The extruder outlet 5 is located on the lower edge of the side of the housing 14 near the top plate 18, and the extruder outlet is located on the lower surface of the housing 14. The extrusion mechanism also includes a second elastic element and an auxiliary frame 19. The rotating shaft 16 is provided with a limiting plate at its end located outside the top plate 18. The auxiliary frame 19 connects the outer edge of the outer shell 14 and the limiting plate. The second elastic element connects the top plate 18 and the limiting plate.

[0037] In a preferred embodiment, the second elastic element is a spring 22, and the rotating shaft 16 passes through the spring 22; the spring 22 and the rotating shaft 16 are coaxial. In a preferred embodiment, the extruder outlet is a plurality of filter holes formed on the lower surface of the outer casing 14.

[0038] In use, the extrusion motor 15 drives the rotating shaft 16 and the spiral blade 17 to rotate, thereby conveying the solid feces entering the outer shell 14 toward the top plate 18. During this conveying process, the feces are extruded. When the spring 22 is in its normal state, the top plate 18 is located on the side of the extruder outlet 5 facing the extrusion motor 15. As the spiral blade 17 conveys the feces to the top plate 18, it continuously pushes the top plate 18 toward the side of the spring 22 until a sufficient amount of feces enters the outer shell 14. Then, the feces are pushed by the spiral blade 17 to the extruder outlet 5 and fall out of the outer shell 14. The water generated during the extrusion process flows into the second water collector through the filter holes.

[0039] In this embodiment, the device also includes a support 1, a first moisture collector, and a second moisture collector. The linear vibrating screen also includes a first elastic element. The first elastic element can be a spring, and the vibrating frame 7 and the support 1 are fixedly connected by the first elastic element. The first moisture collector includes a first plate structure 12 and a first water pipe 13, and the second moisture collector includes a second plate structure 20 and a second water pipe 21. The first plate structure 12, the second plate structure 20, and the outer casing are all fixedly connected to the support, thereby the linear vibrating screen, the extrusion mechanism, the first moisture collector, and the second moisture collector are mounted on the support 1. As a preferred embodiment, the premixing chamber 23 can also be mounted on the support 1, making the premixing chamber 23, the linear vibrating screen, and the extrusion mechanism a single unit, facilitating changes in usage scenarios. In addition, the stator portion of the extrusion motor 15 can also be fixedly connected to the support 1.

[0040] In this embodiment, one side of the first plate structure 12 in the first water collector is concave inwards, with the concave side facing upwards. The projection of the concave surface in the horizontal plane surrounds the projection of the screen 8 in the horizontal plane. With this configuration, the water filtered from the manure flows directly from the screen holes of the linear vibrating screen onto the first plate structure 12, facilitating the collection and centralized treatment of this water. One end of the first water pipe 13 is connected to the first plate structure 12, and the other end extends outside the support 1. This allows the water filtered from the manure to be directed to a designated treatment location via the first water pipe 13. In a preferred embodiment, the end of the first water pipe 13 furthest from the first plate structure 12 can also be connected to the premixing chamber 23, thereby achieving water circulation and allowing the screened water to be reused in the premixing chamber 23.

[0041] Similarly, in the second moisture collector, one side of the second plate structure 20 is concave inwards with the concave side facing upwards. One end of the second water pipe 21 is connected to the second plate structure 20, which is mounted on the support 1. Thus, one end of the second water pipe 21 is connected to the interior of the second plate structure 20, and the other end extends outside the support 1. The end of the second water pipe 21 away from the second plate structure 20 can also be connected to the premixing chamber 23, thereby guiding the water from the extruder into the premixing chamber 23.

[0042] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A device for separating solid and liquid in excrement in an environmentally friendly treatment process for aquaculture, characterized in that It includes a premixing bin (23), a linear vibrating screen and an extrusion mechanism. The premixing bin (23) is connected to the vibrating screen inlet (6) of the linear vibrating screen via a feeding pump (11). The linear vibrating screen is higher than the extrusion mechanism and the vibrating screen manure outlet (3) of the linear vibrating screen is connected to the extruder inlet (4) of the extrusion mechanism. The extrusion mechanism is provided with an extruder manure outlet (5) and an extruder water outlet. The linear vibrating screen includes a surrounding plate (2), a vibrating frame (7), a screen (8), a cover plate (9), and a vibrating motor (10). The surrounding plate (2), the screen (8), and the cover plate (9) form a box-shaped structure, and the screen (8) is the bottom surface of the box-shaped structure. The vibrating frame (7) is fixedly connected to the surrounding plate (2), and the vibrating motor (10) is fixedly connected to the screen (8). The inlet (6) and outlet (3) of the vibrating screen are respectively located at both ends of the linear vibrating screen. A first moisture collector is provided below the screen (8). The extrusion mechanism includes a housing (14), an extrusion motor (15), a rotating shaft (16), a spiral blade (17), and a top plate (18). The rotating shaft (16) passes through the housing (14) axially. The spiral blade (17) is located inside the housing (14) and is fixedly wound around the rotating shaft (16). The extrusion motor (15) and the top plate (18) are respectively connected to the two ends of the rotating shaft (16). The extruder inlet (4) is located on the upper surface of the housing (14) near the extrusion motor (15). The extruder outlet (5) is located on the lower edge of the side of the housing (14) near the top plate (18). The extruder outlet is located on the lower surface of the housing (14). A second water collector is provided below the extruder outlet.

2. A device for separating solid and liquid in excrement of a process of cultivating environmental-friendly governance according to claim 1, characterized in that, It also includes a support (1), on which the linear vibrating screen, the extrusion mechanism, the first moisture collector and the second moisture collector are mounted.

3. The manure solid-liquid separation device for environmental protection treatment in aquaculture according to claim 2, characterized in that, The linear vibrating screen also includes a first elastic element, and the vibrating frame (7) and the support (1) are fixedly connected by the first elastic element.

4. The manure solid-liquid separation device for environmental protection treatment in aquaculture according to claim 2, characterized in that, The extrusion mechanism also includes a second elastic element and an auxiliary frame (19). The rotating shaft (16) is provided with a limiting plate at the end located outside the top plate (18). The auxiliary frame (19) connects the outer edge of the outer shell (14) and the limiting plate. The second elastic element connects the top plate (18) and the limiting plate. The top plate (18) can move axially along the rotating shaft (16).

5. The manure solid-liquid separation device for environmental protection treatment in aquaculture according to claim 4, characterized in that, The second elastic element is a spring (22), and the rotating shaft (16) passes through the spring (22).

6. The manure solid-liquid separation device for environmental protection treatment in aquaculture according to claim 2, characterized in that, The premixed bin (23) is mounted on the bracket (1).

7. The manure solid-liquid separation device for environmental protection treatment in aquaculture according to claim 2, characterized in that, The first water collector includes a first plate structure (12) and a first water pipe (13). One side of the first plate structure (12) is concave inward and the concave side is upward. One end of the first water pipe (13) is connected to the first plate structure (12). The first plate structure (12) is mounted on a bracket (1).

8. The manure solid-liquid separation device for environmental protection treatment in aquaculture according to claim 7, characterized in that, The first water pipe (13) connects the first plate structure (12) and the premixing chamber (23).

9. A manure solid-liquid separation device for environmental protection treatment in aquaculture according to claim 2, characterized in that, The second water collector includes a second plate structure (20) and a second water pipe (21). One side of the second plate structure (20) is concave inward and the concave side is upward. One end of the second water pipe (21) is connected to the second plate structure (20). The second plate structure (20) is mounted on the bracket (1).

10. A manure solid-liquid separation device for environmental protection treatment in aquaculture according to claim 9, characterized in that, The second water pipe (21) connects the second plate structure (20) and the premixing chamber (23).

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