Agricultural livestock wastewater treatment device

Abstract

The application discloses an agricultural livestock sewage treatment device, which comprises a support, a reaction tank, a top cover, a material feeding port, an aerator, a sewage pump and a stirring unit. A gas cylinder is fixedly installed at the center of the top surface of the top cover. The stirring unit comprises a spiral blade rod, a disc and a rotating disc. Uniformly distributed folding rod assemblies are rotationally connected between the outer circumferential surfaces of the disc and the rotating disc. The folding rod assemblies can be vertically compressed and stretched and horizontally expanded and contracted. A brush assembly with an overall length that can be horizontally adjusted is arranged at the bottom of each folding rod assembly. A flow supply assembly is arranged. The outflow end of the flow supply assembly is in communication with the inside of the reaction tank. The inflow end of the flow supply assembly is connected with the output end of the aerator and the sewage pump. The folding and expansion / contraction and rotation of the folding rod assemblies and the synchronous expansion / contraction and rotation of the brush assemblies can fully stir the water body and avoid the deposition of the materials at the bottom of the pool. The horizontal plane scanning type three-dimensional space flow supply is adopted to realize sufficient and efficient stirring.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to an agricultural and livestock wastewater treatment device. Background Technology

[0002] SBR, short for Sequential Batch Activated Sludge Process, is an activated sludge wastewater treatment technology that operates in an intermittent aeration mode. Unlike traditional wastewater treatment processes, SBR technology uses a time-segmented operation mode instead of a space-segmented one, and unstable biochemical reactions instead of steady-state biochemical reactions, with static ideal sedimentation replacing traditional dynamic sedimentation. Its main characteristic is its ordered and intermittent operation. The core of SBR technology is the SBR reactor, which integrates equalization, primary sedimentation, biodegradation, and secondary sedimentation functions into one tank, without a sludge return system. The SBR working process is as follows: wastewater is added to the reactor in a short period of time, and aeration begins after the reactor is full of water. Once the organic matter in the wastewater reaches the discharge requirements through biodegradation, aeration stops, and after a certain sedimentation period, the supernatant is discharged.

[0003] In wastewater treatment, mixing is a frequently used step, often employed in pretreatment equalization and homogenization units and biological treatment units. Its purpose is to ensure the wastewater components are uniformly mixed to guarantee stable operation of subsequent treatment units, or to keep suspended solids in the wastewater suspended to prevent sedimentation and caking at the bottom of the tank. Existing mixing methods are typically mechanical, using an electric motor to drive a mixing device. More efficient jet mixing methods have been developed by adding circulating water pumps, suction and delivery pipes, and jet mixing devices to the mechanical mixing system. However, jet mixing is fixed during tank construction and cannot be added or removed as the process changes, making installation inconvenient. Currently, improvements to aeration devices mostly achieve the mixing function of wastewater reaction tanks through airflow. However, existing technologies typically involve horizontal jetting, with the airflow and water flow direction being horizontally mixed, or jetting in a preset direction. This creates localized directional mixing of the water at the bottom of the tank, which can easily lead to the premature deposition of sludge and other materials at the bottom of the reaction tank, resulting in insufficient mixing of the water. After the gas is injected, it naturally floats to the surface. During the mixing process, the upward path of the gas is relatively fixed, and the contact between the gas and the water at the bottom of the tank is prone to insufficient problems, resulting in low aeration efficiency and poor mixing effect on the water at the bottom of the tank. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes an agricultural and livestock wastewater treatment device. By incorporating a foldable and retractable folding rod assembly within a reaction tank, and a retractable brush assembly at the bottom of the folding rod assembly, the device utilizes a cylinder to drive the folding, retraction, and rotation of the folding rod assembly, along with the synchronized extension, retraction, and rotation of the brush assembly. This ensures thorough agitation of the water at the bottom of the reaction tank, preventing sludge and other materials from settling at the bottom during the aeration stage. Furthermore, a flow supply assembly enables the supply of external gas and the circulation of upper-layer water within the bottom water of the reaction tank. During the rotation of the folding rod assembly, a sweeping, three-dimensional flow of water and gas is achieved, ensuring thorough and efficient agitation of the water at the bottom of the tank during the aeration stage, thus completing both oxygen supply and water mixing.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An agricultural and livestock wastewater treatment device includes a support frame, a reaction tank fixedly mounted on the top of the support frame, a top cover fastened to the top of the reaction tank, a material feeding port on the top surface of the top cover, an aerator and a sewage pump respectively fixedly mounted on the support frame, and a stirring unit disposed inside the reaction tank. The side wall of the reaction tank is provided with several sampling ports distributed vertically. A cylinder is fixedly installed at the center of the top surface of the top cover. The stirring unit includes a spiral blade rod fixedly connected to the output shaft end of the cylinder, a disc movably sleeved on the outside of the spiral blade rod, and a turntable rotatably disposed at the center of the bottom surface inside the reaction tank. Several folding rod assemblies evenly distributed around the axis of the turntable are rotatably connected between the outer circular surfaces of the disc and the turntable. The folding rod assembly includes a first rod hinged to the outer circular surface of the disc, a second rod hinged to the bottom end of the first rod, and a third rod hinged to the bottom end of the first rod. The bottom end of the second rod is hinged to the outer circular surface of the turntable. Both the second and third rods are hollow rods, and several evenly distributed diffuser holes are provided on the cylindrical sidewalls. Each folding rod assembly has a brush assembly at the bottom with an overall length that can be horizontally adjusted and is in movable contact with the inner bottom surface of the reaction vessel. One end of the brush assembly is fixedly connected to the outer circular surface of the turntable, and the other end is hinged to the bottom end of the third rod. During the extension / retraction of the cylinder's output rod, the spiral blade rod pushes / pulls the folding rod assembly through the disc to compress / stretch vertically and extend / contract horizontally. After the brush assembly extends / contracts and moves horizontally to the outer / inner side to its limit position, the disc rotates spirally in the forward / reverse direction relative to the spiral blade rod, causing the folding rod assembly and brush assembly to rotate synchronously. A flow supply component is fixedly embedded in the center of the bottom surface of the reaction tank. The outlet end of the flow supply component is connected to the interior of the second rod and / or the third rod, respectively. The inlet end of the flow supply component is connected to the output end of the aerator and the sewage pump, respectively. The input end of the sewage pump is connected to the interior of the reaction tank through the flow supply pipe assembly.

[0006] Furthermore, the brush assembly includes a support block hinged to the bottom end of the third rod, movable plates fixedly connected to both sides of the support block, and guide plates fixedly connected to the outer circumference of the turntable and located outside the two movable plates. The guide plate has a horizontally arranged waist-shaped through groove. A slider is fixedly provided at the side end of the movable plate. The slider is slidably embedded in the waist-shaped through groove. A movable brush is fixedly connected to the bottom of the movable plate, and a fixed brush is fixedly connected to the bottom of the guide plate.

[0007] Furthermore, a caster wheel that is rolled on the bottom surface of the reaction vessel is fixedly connected to the bottom surface of the support block.

[0008] Furthermore, the second and third rods are of the same length.

[0009] Furthermore, the flow supply assembly includes a fixed flow supply pipe coaxially disposed within the turntable and fixedly inserted into the center of the bottom wall of the reaction vessel, a flow distribution cavity fixedly disposed at the top of the fixed flow supply pipe and communicating with the fixed flow supply pipe, and a rotating flow distribution plate rotatably disposed on the outside of the flow distribution cavity and communicating with the inside of the flow distribution cavity. The cavity of the flow distribution plate is connected to the inside of the second rod and / or the third rod through a movable flow supply pipe.

[0010] Furthermore, a first sealing ring located above the rotating diverter disk and a second sealing ring located below the rotating diverter disk are respectively fixedly installed on the outer wall of the diverter cavity. The bottom surface of the first sealing ring is in sliding contact with the top surface of the rotating diverter disk, and the top surface of the second sealing ring is in sliding contact with the bottom surface of the rotating diverter disk.

[0011] Furthermore, the active flow supply pipe is made of stainless steel flexible metal tubing.

[0012] Furthermore, the bottom end of the fixed supply pipe extends to the bottom surface of the reaction vessel and is integrally provided with a first connecting port and a second connecting port, and a one-way control valve is respectively provided in the first connecting port and the second connecting port.

[0013] Furthermore, the supply pipe assembly includes several tiered liquid extraction pipes that are fixedly embedded in the side wall of the reaction tank and distributed equidistantly along the vertical direction, a main liquid extraction pipe that is located on the outside of the reaction tank and communicates with each tiered liquid extraction pipe, the bottom end of the main liquid extraction pipe being connected to the input end of the sewage pump, and a hydraulic water level control valve being fixedly connected to one end of each tiered liquid extraction pipe located inside the reaction tank.

[0014] Furthermore, a sealing cover plate is rotatably connected to the top surface of the top cover, and the sealing cover plate movably covers the material feeding port.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention provides a foldable and retractable folding rod assembly inside the reaction tank and a retractable brush assembly at the bottom of the folding rod assembly. By driving the folding, retraction and rotation of the folding rod assembly and the synchronous extension and rotation of the brush assembly through a cylinder, the water at the bottom of the reaction tank can be fully stirred and cleaned, preventing sludge and other materials from settling at the bottom of the tank during the aeration stage, so as to ensure that the materials are fully aerated. 2. This invention achieves the supply of external gas and the circulation of upper water in the bottom water body by setting a flow supply component at the bottom of the reaction tank. During the horizontal expansion and contraction of the folding rod component, the direction of fluid injection and the horizontal coverage area are changed. During the rotation of the folding rod component, a three-dimensional spatial flow supply of water and gas with horizontal sweeping full coverage is achieved, so that the water at the bottom of the tank is fully and efficiently stirred during the aeration stage, completing the supply of oxygen and water mixing. The stirring efficiency is high and the effect is good. Attached Figure Description

[0016] Figure 1 This is one of the three-dimensional structural schematic diagrams of the agricultural and livestock wastewater treatment device of the present invention; Figure 2 This is a second three-dimensional structural schematic diagram of the agricultural and livestock wastewater treatment device of the present invention; Figure 3 This is a cross-sectional view of the agricultural and livestock wastewater treatment device of the present invention. Figure 4 This is a three-dimensional structural diagram of the stirring unit; Figure 5 This is a schematic diagram showing the hinged connection between the folding rod assembly and the disc and turntable. Figure 6 One of the three-dimensional structural diagrams showing the assembly state of the spiral blade rod and the disc; Figure 7 The second three-dimensional structural diagram shows the assembly state of the spiral blade rod and the disc. Figure 8 This is one of the three-dimensional structural schematic diagrams of the current supply component; Figure 9 This is the second three-dimensional structural schematic diagram of the power supply component; Figure 10 This is a cross-sectional view of the flow supply component; Figure 11 One of the three-dimensional structural diagrams showing the assembly state of the flow supply component and the turntable; Figure 12 The second three-dimensional structural diagram shows the assembly state of the flow supply component and the turntable; Figure 13 This is one of the three-dimensional structural schematic diagrams of the brush assembly; Figure 14This is a second three-dimensional structural schematic diagram of the brush assembly; Figure 15 This is a three-dimensional structural diagram of the flow supply pipe assembly.

[0017] In the diagram: 1. Supply assembly; 101. Fixed supply pipe; 102. Diverter chamber; 103. Rotating diverter plate; 104. Movable supply pipe; 105. First sealing ring; 106. Second sealing ring; 107. First connecting port; 108. Second connecting port; 109. One-way control valve; 2. Reaction tank; 201. Sampling port; 3. Top cover; 301. Material feeding port; 4. Aerator; 5. Supply pipe assembly; 501. Layered extraction pipe; 502. Main extraction pipe; 503. Hydraulic water level control valve; 6. Stirring unit Yuan; 601, Helical blade rod; 602, Disc; 603, Turntable; 604, Folding rod assembly; 6041, First rod body; 6042, Second rod body; 6043, Third rod body; 605, Thrust bearing; 7, Sewage pump; 8, Cylinder; 9, Brush assembly; 901, Support block; 902, Moving plate; 903, Guide plate; 904, Sliding block; 905, Moving brush; 906, Fixed brush; 907, Caster wheel; 10, Bracket; 11, Sealing cover plate; 12, Sampling valve; 13, Support ring plate. Detailed Implementation

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0019] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figures 1 to 15An agricultural and livestock wastewater treatment device includes a support frame 10, a reaction tank 2 fixedly mounted on the top of the support frame 10, a top cover 3 fastened to the top of the reaction tank 2, a material inlet 301 on the top surface of the top cover 3, an aerator 4, a sewage pump 7, and a stirring unit 6 respectively fixedly mounted on the support frame 10. Specifically, an annular support ring plate 13 is fixedly mounted on the top of the support frame 10. The reaction tank 2 is a cylindrical tank with an open top and is fixedly mounted on the top surface of the support ring plate 13. The aerator 4 and the sewage pump 7 are respectively fixedly mounted on the bottom surface of the support ring plate 13. The top cover 3 is a circular plate structure that fastens to the top opening of the reaction tank 2 and is fixed to the reaction tank 2 by means of screw connection or locking buckle. The side wall of the reaction vessel 2 is provided with several sampling ports 201 distributed vertically. The sampling ports 201 are downward inclined pipes, and the outlet end of the pipes is provided with a sampling valve 12. The inlet end of the sampling port 201 covers the vertical range from the bottom to the top of the interior of the reaction vessel 2, so as to realize the sampling of water in different depth areas inside the reaction vessel 2. The sampling valve 12 is used to realize the opening and closing of the sampling port 201.

[0022] A sealing cover plate 11 is rotatably connected to the top surface of the top cover 3, and the sealing cover plate 11 movably covers the material feeding port 301. Specifically, a rotating connecting column is fixedly provided on one side of the top surface of the material feeding port 301, and the sealing cover plate 11 is rotatably sleeved on the rotating connecting column, so that the sealing cover plate 11 can swing around the rotating connecting column. When the sealing cover plate 11 rotates to one side, the sealing cover plate 11 can completely cover the material feeding port 301 directly above it, so that the material feeding port 301 is in a closed state to prevent external debris from entering the reaction tank 2; when the sealing cover plate 11 rotates to the other side, the sealing cover plate 11 moves from above the material feeding port 301 to one side, so that the material feeding port 301 is in an open state, at which time various reactive materials that need to be added can be put into the reaction tank 2 through the material feeding port 301. Preferably, a handle is provided on the top surface of the sealing cover 11 away from the rotating connecting column to facilitate the rotation operation of the sealing cover 11; an arc-shaped pressure plate is fixedly provided on one side of the top surface of the material feeding port 301 to facilitate the blocking and limiting of the sealing cover 11 when it is moved directly above the material feeding port 301. At the same time, one edge of the sealing cover 11 is inserted into the lower part of the arc-shaped pressure plate from the side, so that the top edge of the sealing cover 11 slides and overlaps with the bottom surface of the arc-shaped pressure plate, and the bottom surface of the sealing cover 11 is reliably attached to the top edge of the material feeding port 301. Furthermore, a rubber sealing gasket is fixedly provided on the bottom surface of the sealing cover 11 to enhance the sealing effect of the sealing cover 11 on the material feeding port 301, and at the same time increase the friction between the sealing cover 11 and the top surface of the top cover 3 after the sealing cover 11 is inserted under the arc-shaped pressure plate, so as to improve the stability of the locking position of the sealing cover 11.

[0023] A cylinder 8 is fixedly installed at the center of the top surface of the top cover 3. Specifically, a groove is provided at the center of the top surface of the top cover 3, and a through hole is opened in the groove. A cylinder mounting seat is fixedly embedded in the groove and the through hole. The cylinder 8 is fixedly installed at the center of the top surface of the cylinder mounting seat. The end of its output rod extends movably to the top of the internal cavity of the reaction vessel 2 to provide vertical pushing and pulling power to the stirring unit 6. The reciprocating stroke of the output rod is determined according to the power input requirements of the stirring unit 6.

[0024] The stirring unit 6 includes a spiral blade rod 601 fixedly connected to the output shaft end of the cylinder 8, a disc 602 movably sleeved on the outside of the spiral blade rod 601, and a turntable 603 rotatably disposed at the center of the bottom surface inside the reaction vessel 2. Several (six in this embodiment) folding rod assemblies 604, evenly distributed around the axis of the turntable 603, are rotatably connected between the outer surfaces of the disc 602 and the turntable 603. Specifically, the top section of the spiral blade rod 601 is a threaded sleeve structure for detachable connection to the output rod end of the cylinder 8 and fastened by a loosening screw. The bottom section of the spiral blade rod 601 is a spiral blade structure, with a limiting plate fixedly installed at the bottom end. A square hole is opened at the center of the top surface of the disc 602 to mate with the spiral blade. The spiral blade structure movably passes through the square hole, forming a spiral surface mating structure between the disc 602 and the spiral blade rod 601, similar to a "flying fairy" bamboo dragonfly toy. When the output rod of cylinder 8 extends, the spiral blade rod 601 moves vertically downward. Under the action of the vertical component of the spiral surface force, the disc 602 moves vertically downward synchronously, thereby providing downward pressure for the vertical compression and horizontal extension process of the folding rod assembly 604. When the folding rod assembly 604 extends horizontally to its limit position, the disc 602 can no longer move vertically downward, and the spiral blade rod 601 continues to move vertically downward. During the relative movement, the horizontal component of the spiral surface drives the disc 602 to rotate unidirectionally in the positive direction around the axis of the spiral blade rod 601, thereby driving each folding rod assembly 604 to rotate synchronously in the positive direction. Conversely, when the output rod of cylinder 8 retracts, the spiral blade rod 601 moves vertically upward. Under the action of the vertical component of the spiral surface force, the disc 602 moves vertically upward synchronously, thus providing an upward pulling force for the vertical stretching and horizontal retraction process of the folding rod assembly 604. When the folding rod assembly 604 retracts horizontally to its limit position, the disc 602 can no longer move vertically upward, and the spiral blade rod 601 continues to move vertically upward. During the relative movement, the horizontal component of the spiral surface drives the disc 602 to rotate unidirectionally in the opposite direction around the axis of the spiral blade rod 601, thereby driving each folding rod assembly 604 to rotate synchronously in the opposite direction.

[0025] To facilitate the synchronous rotation of the turntable 603 with multiple folding rod assemblies 604, a rotating shaft cylinder is integrally provided at the center of the bottom surface of the turntable 603. A thrust bearing 605 is sleeved on the outer side of the shaft cylinder. A bearing mounting groove is provided at the center of the inner bottom surface of the reaction vessel 2. The outer ring of the thrust bearing 605 is fixedly embedded in the bearing mounting groove. The upper section of the shaft cylinder of the turntable 603 is supported on the top surface of the inner ring of the thrust bearing 605 through a shoulder.

[0026] The folding rod assembly 604 includes a first rod 6041 hinged to the outer circular surface of the disc 602, a second rod 6042 and a third rod 6043 respectively hinged to the bottom end of the first rod 6041, and the bottom end of the second rod 6042 is hinged to the outer circular surface of the turntable 603. Thus, the disc 602, the turntable 603, and the two first rods 6041 and two second rods 6042 on opposite sides form a bilaterally symmetrical hexagonal structure. Since the vertical height of the turntable 603 remains constant, when the disc 602 moves vertically downward, the intersection axis of the first rods 6041 and the second rods 6042 moves outward along the radial direction of the disc 602 / turntable 603 and moves vertically downward. Furthermore, since the second rod 6042, the third rod 6043, and the brush assembly 9 form a triangular structure with a base that is always horizontal and adjustable in length, when the intersection axis of the first rods 6041 and the second rods 6042 (corresponding to the vertices of the triangle) moves outward along the radial direction of the disc 602 / turntable 603 and moves vertically downward, the bottom end of the third rod 6043 moves horizontally outward to reconstruct the triangular structure, thereby achieving the length adjustment of the brush assembly 9. Preferably, the second rod 6042 and the third rod 6043 are of the same length, so that the triangular structure is always an isosceles triangle, and the third rod 6043 and the second rod 6042 always swing symmetrically to the left and right sides around their common hinge axis; furthermore, the first rod 6041 is also of the same length as the second rod 6042, so that the first rod 6041 and the second rod 6042 always swing symmetrically to the up and down sides around their common hinge axis, which facilitates the corresponding conversion between the vertical lifting distance of the disc 602 and the horizontal distance between the bottom ends of the second rod 6042 and the third rod 6043.

[0027] Each folding rod assembly 604 has a brush assembly 9 at its bottom, the overall length of which is horizontally adjustable and in contact with the inner bottom surface of the reaction vessel 2. One end of the brush assembly 9 is fixedly connected to the outer circular surface of the turntable 603, and the other end is hinged to the bottom end of the third rod 6043. Specifically, the brush assembly 9 includes a support block 901 hinged to the bottom end of the third rod 6043, movable plates 902 fixedly connected to both sides of the support block 901, and guide plates 903 fixedly connected to the outer circular surface of the turntable 603 and located outside the two movable plates 902. The guide plate 903 has a horizontally arranged waist-shaped through groove. A slider 904 is fixedly installed on the side end of the movable plate 902. The slider 904 is slidably embedded in the waist-shaped through groove. A movable brush 905 is fixedly connected to the bottom of the movable plate 902, and a fixed brush 906 is fixedly connected to the bottom of the guide plate 903. The horizontal travel of slider 904 from its innermost to its outermost end within the waist-shaped groove is the relative horizontal displacement of the moving brush 905 relative to the fixed brush 906, and also the maximum adjustment range of the overall length of the brush assembly 9. Since the guide plates 903 on both sides are symmetrically fixed to the outer surface of the turntable 603, and the waist-shaped groove is horizontally positioned, the two sliders 904 and the two moving plates 902 can only move horizontally, and the brush assembly 9 can correspondingly only move horizontally along the radial direction of the turntable 603. The free adjustment of the overall horizontal length of the moving plate 902 and the guide plate 903 can adapt to changes in the swing angle of the second rod 6042 and the third rod 6043, automatically constructing a triangular structure. Preferably, a caster wheel 907, which is rolled on the bottom surface of the support block 901, is fixedly connected to the bottom surface of the support block 901 to support the horizontal movement of the moving plate 902 and the support block 901, improving the smoothness of the horizontal movement of slider 904 within the waist-shaped groove.

[0028] As mentioned earlier, when the slider 904 is located at the outermost end of the waist-shaped channel, the horizontal extension of the folding rod assembly 604 reaches its maximum limit, and the overall length of the brush assembly 9 also reaches its maximum. After that, the folding rod assembly 604 rotates synchronously with the disc 603, so the brush assembly 9 can perform circumferential sweeping cleaning of the inner bottom surface of the reaction tank 2, which can effectively prevent the deposition and adhesion of sludge particles at the bottom of the reaction tank 2; at the same time, the rotating brush assembly 9 can also stir and clean the water body at the bottom of the reaction tank 2, preventing sludge and other materials from settling at the bottom of the tank during the aeration stage, so as to ensure that the materials are fully aerated and improve the mixing effect.

[0029] Both the second rod 6042 and the third rod 6043 are hollow rods, and each has several evenly distributed diffuser holes on its cylindrical sidewall. This reduces the overall weight of the folding rod assembly 604 and also serves as a supply pipeline terminal for water and gas. During the swinging and rotating of each rod, fluid is delivered in different directions within the reaction tank 2, improving the mixing effect of the liquid and the uniformity of gas spatial dispersion, allowing for more thorough and uniform contact between the gas and liquid.

[0030] A flow supply assembly 1 is fixedly embedded in the center of the bottom surface of the reaction vessel 2. The flow supply assembly 1 includes a fixed flow supply pipe 101 coaxially disposed within the turntable 603 and fixedly inserted into the center of the bottom wall of the reaction vessel 2; a flow distribution cavity 102 fixedly disposed at the top of the fixed flow supply pipe 101 and communicating with the fixed flow supply pipe 101; and a rotating flow distribution plate 103 rotatably disposed outside the flow distribution cavity 102 and communicating with the interior of the flow distribution cavity 102. The cavity of the flow distribution plate 103 is connected to the interior of the second rod 6042 and / or the third rod 6043 through a movable flow supply pipe 104. Specifically, a circular through hole is opened in the bearing mounting groove on the bottom surface of the reaction vessel 2. The fixed flow supply pipe 101 is vertically sleeved in the rotating shaft cylinder on the bottom surface of the turntable 603. Its bottom end passes through the circular through hole to the bottom surface of the reaction vessel 2 and is located in the hollow part of the support ring plate 13, and is then fixedly connected to the bottom surface of the reaction vessel 2 by a round nut. Preferably, a rubber sealing ring is provided between the inner wall of the circular through hole and the outer wall of the fixed supply pipe 101 to ensure the sealing of the bottom of the reaction vessel 2. The diversion cavity 102 is a hollow cylindrical shell structure, and several flow ports are provided on its outer circular side wall, so that the fluid sent in by the fixed supply pipe 101 can be dispersed and flowed out through the flow ports. Several output pipe connection ports are integrally provided on the outer circular surface of the diversion plate 103. The output pipe connection ports are connected to the inlet end of the movable supply pipe 104, so that the dispersed fluid can be sent into the interior of the second rod 6042 and / or the third rod 6043 through the movable supply pipe 104, and then dispersed and flowed out through the diffuser holes into the reaction vessel 2.

[0031] Preferably, the movable supply pipe 104 is made of stainless steel flexible metal hose, which can ensure fluid transmission and realize force transmission between the rotating diverter 103 and the second rod 6042 and / or the third rod 6043, so that the rotating diverter 103 can rotate synchronously with each folding rod assembly 604, avoiding problems such as poor delivery or pipe breakage due to pipe twisting. Furthermore, a first sealing ring 105 located above the rotating diverter 103 and a second sealing ring 106 located below the rotating diverter 103 are respectively fixedly installed on the outer wall of the diverter cavity 102. The bottom surface of the first sealing ring 105 slides in contact with the top surface of the rotating diverter 103, and the top surface of the second sealing ring 106 slides in contact with the bottom surface of the rotating diverter 103, so as to improve the sealing performance at the connection between the rotating diverter 103 and the diverter cavity 102 and prevent fluid from overflowing directly from the connection.

[0032] The bottom end of the fixed supply pipe 101 is integrally provided with a first connecting port 107 and a second connecting port 108. A one-way control valve 109 is respectively installed inside the first connecting port 107 and the second connecting port 108. The first connecting port 107 is connected to the output end of the sewage pump 7 via a pipeline. The input end of the sewage pump 7 is connected to the interior of the reaction tank 2 via the supply pipe assembly 5, thereby drawing water from inside the reaction tank 2 and transmitting it through the supply assembly 1 to the second rod 6042 and / or the third rod 6043, and then dispersing it back into the reaction tank 2 through the diffuser holes, achieving water circulation and further improving the mixing uniformity of the water inside the reaction tank 2. The second connecting port 108 is connected to the output end of the aerator 4 via a pipeline, thereby transmitting clean air or oxygen from outside the reaction tank 2 through the supply assembly 1 to the second rod 6042 and / or the third rod 6043, and then dispersing it into the reaction tank 2 through the diffuser holes, thus supplying oxygen to the water. During the horizontal expansion and contraction of the folding rod assembly 604, the spatial spray position and angle of each diffuser hole can be changed, thereby changing the direction of fluid spray and the horizontal coverage area. At the same time, during the rotation of the folding rod assembly 604, a three-dimensional spatial supply of water and gas with horizontal sweeping full coverage is achieved, so that the water at the bottom of the pool is fully and efficiently stirred during the aeration stage, completing the supply of oxygen and water mixing, thereby improving the stirring efficiency and effect.

[0033] The supply pipe assembly 5 includes several vertically equidistant layered extraction pipes 501 fixedly embedded in the side wall of the reaction tank 2, and a main extraction pipe 502 located on the outside of the reaction tank 2 and connected to each layered extraction pipe 501. The bottom end of the main extraction pipe 502 is connected to the input end of the sewage pump 7. A hydraulic water level control valve 503 is fixedly connected to one end of each layered extraction pipe 501 located inside the reaction tank 2. In this way, the water in each layer of the reaction tank 2 can participate in the internal circulation process of the water body simultaneously, so as to improve the uniformity of substances in the water body. At the same time, when the water level drops due to sampling or discharge, the hydraulic water level control valve 503 located above the liquid surface automatically closes, while the hydraulic water level control valves 503 below are in the normal open state, so that the supply pipe assembly 5 can automatically adjust the opening and closing of the layered extraction pipes 501 according to the change of liquid level to achieve normal water transportation function.

[0034] The device of this invention is mainly used in the water inlet aeration stage. After the aeration and stirring stage is completed, the cylinder 8 stops working, and the stirring unit 6 stops lifting and rotating, allowing the aerated water to complete the sedimentation process in a static state. After sedimentation, the upper clear liquid can be sampled and tested at different time periods through the sampling port 201, or completely discharged. After the subsequent sedimentation and drainage process is completed in the reaction tank, in the sludge removal stage, this device can also be used to supply the cleaning water in the bottom of the reaction tank and stir the deposited sludge so that it can be mixed with the cleaning water and discharged in a fluid state, for example, by pumping it out by a sewage pump. Alternatively, the round nut at the bottom of the fixed supply pipe 101 can be removed, the various movable supply pipes 104 connected to the diversion plate 103 can be removed, and the fixed supply pipe 101 can be vertically pulled away from the bottom of the reaction tank 2. At this time, the circular through hole at the bottom of the reaction tank 2 is in an open state, and the sludge or water in the reaction tank 2 can be directly discharged from the circular through hole.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An agricultural and livestock wastewater treatment device, comprising a support frame, a reaction tank fixedly mounted on the top of the support frame, a top cover fastened to the top of the reaction tank, a material inlet on the top surface of the top cover, an aerator, a sewage pump, and a stirring unit respectively fixedly mounted on the support frame, wherein a plurality of sampling ports distributed vertically are provided on the side wall of the reaction tank, characterized in that: A cylinder is fixedly installed at the center of the top surface of the top cover. The stirring unit includes a spiral blade rod fixedly connected to the output shaft end of the cylinder, a disc movably sleeved on the outside of the spiral blade rod, and a turntable rotatably set at the center of the bottom surface inside the reaction vessel. Several folding rod assemblies evenly distributed around the axis of the turntable are rotatably connected between the outer circular surfaces of the disc and the turntable. The folding rod assembly includes a first rod hinged to the outer circular surface of the disc, a second rod hinged to the bottom end of the first rod, and a third rod hinged to the bottom end of the first rod. The bottom end of the second rod is hinged to the outer circular surface of the turntable. Both the second and third rods are hollow rods, and several evenly distributed diffuser holes are provided on the cylindrical sidewalls. Each folding rod assembly has a brush assembly at the bottom whose overall length can be adjusted horizontally and which is in contact with the inner bottom surface of the reaction vessel. The brush assembly includes a support block hinged to the bottom of the third rod, movable plates fixedly connected to both sides of the support block, and guide plates fixedly connected to the outer surface of the turntable and located outside the two movable plates. The guide plates have horizontally arranged waist-shaped slots. The movable plates have sliders fixedly installed at the side ends, and the sliders are slidably embedded in the waist-shaped slots. Movable brushes are fixedly connected to the bottom of the movable plates, and fixed brushes are fixedly connected to the bottom of the guide plates. A flow supply assembly is fixedly embedded in the center of the bottom surface of the reaction tank. The flow supply assembly includes a fixed flow supply pipe coaxially disposed in the turntable and fixedly inserted into the center of the bottom wall of the reaction tank, a flow distribution cavity fixedly disposed at the top of the fixed flow supply pipe and communicating with the fixed flow supply pipe, and a rotating flow distribution plate rotatably disposed on the outside of the flow distribution cavity and communicating with the inside of the flow distribution cavity. The cavity of the flow distribution plate is connected to the inside of the second rod and / or the third rod through a movable flow supply pipe. The inlet end of the flow supply assembly is connected to the output end of the aerator and the sewage pump respectively. The input end of the sewage pump is connected to the inside of the reaction tank through the flow supply pipe assembly.

2. The agricultural and livestock wastewater treatment device according to claim 1, characterized in that: The bottom surface of the support block is fixedly connected to a caster wheel that is rolled on the bottom surface inside the reaction vessel.

3. An agricultural and livestock wastewater treatment device according to claim 1 or 2, characterized in that: The second and third rods are of the same length.

4. The agricultural and livestock wastewater treatment device according to claim 1, characterized in that: The outer wall of the diversion cavity is fixedly provided with a first sealing ring located above the rotating diversion disk and a second sealing ring located below the rotating diversion disk. The bottom surface of the first sealing ring is in sliding contact with the top surface of the rotating diversion disk, and the top surface of the second sealing ring is in sliding contact with the bottom surface of the rotating diversion disk.

5. An agricultural and livestock wastewater treatment device according to claim 1 or 4, characterized in that: The active flow supply pipe is made of stainless steel flexible metal tubing.

6. An agricultural and livestock wastewater treatment device according to claim 1 or 4, characterized in that: The bottom end of the fixed supply pipe extends to the bottom surface of the reaction vessel and is integrally provided with a first connecting pipe port and a second connecting pipe port. A one-way control valve is respectively provided in the first connecting pipe port and the second connecting pipe port.

7. The agricultural and livestock wastewater treatment device according to claim 1, characterized in that: The supply pipe assembly includes several tiered extraction pipes that are fixedly embedded in the side wall of the reaction tank and distributed equidistantly along the vertical direction, a main extraction pipe that is located on the outside of the reaction tank and communicates with each tiered extraction pipe, the bottom end of the main extraction pipe being connected to the input end of the sewage pump, and a hydraulic water level control valve being fixedly connected to one end of each tiered extraction pipe located inside the reaction tank.

8. The agricultural and livestock wastewater treatment device according to claim 1, characterized in that: A sealing cover plate is rotatably connected to the top surface of the top cover, and the sealing cover plate movably covers the material feeding port.

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