Livestock wastewater purification treatment equipment

Abstract

The application provides livestock sewage purification treatment equipment, and mainly relates to the technical field of sewage treatment. The livestock sewage purification treatment equipment comprises a pretreatment filter box, a treatment tank and a sediment discharge device, the pretreatment filter box is fixedly arranged on the treatment tank, the sediment discharge device is fixedly installed at the bottom of the treatment tank, and the bottom of the pretreatment filter box is in communication with the treatment tank; a sewage adding end is arranged on one side of the pretreatment filter box, a filtering mechanism is arranged in the pretreatment filter box, and the filtering mechanism comprises a first-stage filtering grid located at the upper portion and a second-stage filtering grid located at the lower portion in the pretreatment filter box. The two-stage filtering grids in the pretreatment filter box are matched with an automatic impurity-removing wheel, the risk of blockage is reduced from the source, a multi-dimensional stirring system is innovatively designed, the reagent reaction efficiency is improved, the conical tank bottom and the spiral sediment discharge structure are matched, the sediment is completely discharged, the treatment requirements of high organic matter and high suspended solids of livestock sewage are met, and stability and convenience are considered.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a livestock wastewater purification and treatment device. Background Technology

[0002] With the rapid development of large-scale livestock and poultry farming, the discharge of high-concentration organic wastewater generated during the farming process has increased significantly. The large amount of suspended solids, fibrous materials, ammonia nitrogen, and dissolved organic matter contained in the wastewater will seriously pollute the soil, surface water, and groundwater environment if discharged directly.

[0003] Currently, livestock wastewater treatment equipment generally suffers from three major problems: Low solid-liquid separation efficiency: Traditional equipment mostly uses a single flat filter screen for filtration. Impurities such as fecal residue and feed fiber in livestock and poultry wastewater are easily entangled and clogged by the filter screen, requiring frequent shutdowns for disassembly and cleaning. This not only increases labor costs but also seriously affects the continuity of treatment. Incomplete chemical reaction: Existing equipment mostly uses single-shaft agitators for chemical mixing, which can only achieve unidirectional water flow mixing. This makes it difficult for the chemical to come into uniform contact with the wastewater, resulting in low reaction efficiency. In order to meet the discharge standards, excessive amounts of chemical need to be added, which leads to resource waste and the risk of secondary pollution. Poor synergy between pretreatment and advanced treatment: Most equipment ignores the impact of front-end pretreatment on subsequent reactions. Unfiltered wastewater with high suspended solids directly enters the reaction tank, which not only aggravates the wear of the stirring mechanism but also reduces the utilization rate of the reagents. Furthermore, sediments tend to accumulate at the bottom of the tank and are difficult to completely remove. Long-term operation will lead to a continuous decline in the treatment effect.

[0004] While some technologies have attempted to improve filtration through multi-layer filtration structures (such as CN115259480A), the synergistic problem of filtration anti-clogging and agitation enhancement has not been solved. Some devices have optimized agitation methods, but lack targeted front-end impurity separation designs, failing to meet the specific treatment requirements of livestock wastewater with its high suspended solids and high viscosity. Therefore, there is an urgent need for an integrated device that combines efficient pretreatment, multi-dimensional agitation reaction, and convenient sludge discharge, simultaneously addressing the core pain points of existing technologies. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a livestock wastewater purification and treatment device that integrates three core functions: impurity filtration, chemical reaction, and sediment discharge, and achieves integrated operation through modular assembly.

[0006] To achieve the above objectives, the present invention employs the following technical solution: A livestock wastewater purification and treatment device includes a pretreatment filter box, a treatment tank, and a sediment discharge device. The pretreatment filter box is fixedly installed on the treatment tank, and the sediment discharge device is fixedly installed at the bottom of the treatment tank. The bottom of the pretreatment filter box is connected to the inside of the treatment tank. The treatment tank is equipped with a main water inlet pipe, a water level window on the side of the treatment tank, a reagent addition pipe on the top of the treatment tank, a drain pipe at the bottom of the treatment tank, and a stirring device inside the treatment tank.

[0007] Furthermore, the pretreatment filter box has a wastewater addition end on one side, and a filtration mechanism is provided in the pretreatment filter box. The filtration mechanism includes a filter grid, which includes a primary filter grid located at the top and a secondary filter grid located at the bottom in the pretreatment filter box. The secondary filter grid has the same structure as the primary filter grid and is arranged in the opposite direction in the horizontal direction. The filter grid includes an inclined section and an arc-shaped section. An automatic impurity cleaning impeller is rotatably installed in the pretreatment filter box. The bottom of the automatic impurity cleaning impeller is in contact with the arc-shaped section of the filter grid. The automatic impurity cleaning impeller includes a rotating frame, and several push plates are fixedly installed in the rotating frame. A impeller drive motor is provided outside the pretreatment filter box. Impurity discharge ports corresponding to the ends of the arc-shaped sections of the filter grid are provided on both sides of the pretreatment filter box.

[0008] Furthermore, the stirring device includes a stirring drive device fixedly installed on the top of the treatment tank and a stirring actuator rotatably installed in the treatment tank. The stirring drive device includes a drive motor and a reducer. The stirring actuator includes a drive shaft, a multi-dimensional stirring structure, and a tank bottom sludge cleaning stirring structure. The drive shaft is connected to the output shaft of the stirring drive device. A support beam is fixedly connected in the treatment tank. The drive shaft is rotatably connected in the support beam. The multi-dimensional stirring structure is fixedly connected to the upper part of the drive shaft. The tank bottom sludge cleaning stirring structure is fixedly connected to the lower part of the drive shaft. A multi-dimensional stirring transmission mechanism is provided between the bottom of the multi-dimensional stirring structure and the support beam. The multidimensional stirring structure includes a support frame, which is fixedly connected to the drive shaft. The two ends of the support frame are fixedly connected to the stirring tanks. Spiral blades are rotatably installed at both ends of the support frame. The spiral blades are coaxially arranged in the stirring tanks. An auxiliary support rod is fixedly connected between the two stirring tanks.

[0009] Furthermore, the main water inlet pipe is equipped with an inlet control valve, and the drain pipe is equipped with a drain control valve.

[0010] Furthermore, a support frame is fixedly connected to the bottom of the processing tank, and the processing tank body includes an upper cylindrical body and a lower conical bottom.

[0011] Furthermore, the sediment discharge device includes a sewage pipe, the side of which is connected to the bottom of the treatment tank. A sewage discharge drive motor is fixedly installed at one end of the sewage pipe, and a cover is fixedly installed at the end of the sewage pipe away from the sewage discharge drive motor. A spiral pusher blade is rotatably installed in the sewage pipe, and a discharge port is provided on the side of the sewage pipe near the cover.

[0012] Furthermore, a pretreatment agent addition pipe is provided on one side of the pretreatment filter box, an inspection door is provided on one side of the pretreatment filter box, and an inspection cover is fixedly installed on the upper part of one side of the pretreatment filter box.

[0013] Furthermore, the multi-dimensional stirring transmission mechanism includes a fixed gear disc, a drive gear, and a synchronous transmission mechanism. The synchronous transmission mechanism is disposed within a support frame and rotates around the drive shaft along with the support frame. The synchronous transmission mechanism includes a synchronous belt, with a first transmission pulley and a second transmission pulley respectively fitted at both ends of the synchronous belt. The first transmission pulley is coaxially arranged with the drive gear, and the second transmission pulley is connected to the helical blade shaft. The drive gear rotates and meshes with the fixed gear disc, and rotates around the fixed gear disc under the drive of the support frame.

[0014] Furthermore, the tank bottom sludge cleaning and stirring structure includes a disc, the center of which is fixedly connected to a drive shaft, and a scraper is fixedly connected between the disc and the lower end of the drive shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The anti-clogging structure is more reasonable: the primary and secondary filter grilles are arranged in opposite directions, with the inclined section guiding the water flow and the arc-shaped section intercepting impurities. In conjunction with the automatic impurity cleaning impeller that fits into the arc-shaped section, the elastic push plate can both buffer the water flow and push impurities to the outlet, greatly reducing the probability of clogging and improving the impurity filtration and discharge efficiency.

[0016] More comprehensive mixing dimensions: In the multi-dimensional mixing structure, the support frame drives the mixing tank to rotate horizontally, and simultaneously drives the spiral blades to stir vertically through the fixed toothed disc, drive gear and synchronous belt transmission. Combined with the bottom scraper to remove the sediment at the bottom of the tank, the mixing uniformity is significantly improved.

[0017] The structural assembly is clearer: the assembly relationship of each component is clear, the pretreatment filter box is placed on top, the treatment tank is in the middle, the sediment discharge device is installed at the bottom of the tank, and the auxiliary structures such as inspection doors, covers, and water level windows are reasonably laid out, which facilitates operation and maintenance.

[0018] Energy consumption and cost optimization: The multi-dimensional stirring and transmission mechanism achieves multi-dimensional stirring through mechanical linkage, eliminating the need for additional drive components and reducing energy consumption; front-end pretreatment reduces the amount of subsequent reagents added, and automatic discharge of sediment reduces manual cleaning costs, resulting in an overall operating cost reduction of more than 30% compared to traditional equipment.

[0019] Wider adaptability: By switching the influent method and adjusting the type of pretreatment agent, it can adapt to the wastewater treatment needs of different types of livestock such as pigs, cattle, and waterfowl, while meeting the integrated treatment needs of small and medium-sized farms and the pretreatment needs of large-scale farms. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall first-view structure of the present invention; Figure 2 This is a schematic diagram of the overall second-view structure of the present invention; Figure 3 This is a schematic diagram of the external structure of the pretreatment filter box of the present invention; Figure 4 This is a schematic diagram of the internal structure of the pretreatment filter box of the present invention; Figure 5 This is a first-view structural schematic diagram of the stirring actuator of the present invention; Figure 6 This is a second-view structural schematic diagram of the stirring actuator of the present invention; Figure 7 This is a schematic diagram of the automatic impurity cleaning impeller structure of the present invention; Figure 8 This is a schematic diagram of the multi-dimensional stirring transmission mechanism of the present invention; Figure 9 This is a schematic diagram of the sediment discharge device of the present invention.

[0021] The following are the labels in the attached diagram: 1. Pretreatment filter box; 2. Treatment tank; 3. Sediment discharge device; 4. Agitator; 11. Wastewater addition end; 12. Filter screen; 13. Automatic impurity cleaning impeller; 14. Impeller drive motor; 15. Impurity discharge outlet; 21. Main inlet pipe; 22. Water level window; 23. Chemical addition pipe; 24. Drain pipe; 31. Sewage pipe; 32. Sewage drive motor; 33. Cover; 35. Discharge outlet; 40. Agitator drive device; 41. Support frame; 42. Agitator tank; 43. 44. Spiral blade; 50. Auxiliary support rod; 60. Support beam; 61. Fixed gear disc; 62. Drive gear; 63. Synchronous belt; 64. Transmission pulley one; 70. Transmission pulley two; 71. Disc; 72. Scraper; 100. Pretreatment agent addition pipe; 101. Inspection door; 102. Inspection cover plate; 121. Inclined section; 122. Arc section; 131. Rotating frame; 132. Push plate; 200. Support frame; 201. Cylinder; 202. Conical bottom; 210. Water inlet control valve; 400. Drive shaft. Detailed Implementation

[0022] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0023] Combined with appendix Figures 1-9A livestock wastewater purification and treatment device includes a pretreatment filter box 1, a treatment tank 2, and a sediment discharge device 3. The pretreatment filter box 1 is fixedly installed on the treatment tank 2, and the sediment discharge device 3 is fixedly installed at the bottom of the treatment tank 2. The bottom of the pretreatment filter box 1 is connected to the inside of the treatment tank 2. The pretreatment filter box 1 has a wastewater addition end 11 on one side. The pretreatment filter box 1 contains a filtration mechanism, which includes a filter grid 12. The filter grid 12 includes a primary filter grid located at the top and a secondary filter grid located at the bottom within the pretreatment filter box 1. The secondary filter grid has the same structure as the primary filter grid but is arranged in the opposite direction in the horizontal direction. The filter grid 12 includes an inclined section 121 and an arc-shaped section 122. An automatic cleaning impurity impeller 13 is rotatably installed in the pretreatment filter box 1. The bottom of the automatic impurity cleaning impeller 13 is fitted with the arc-shaped section 122 of the filter grid 12. The automatic impurity cleaning impeller 13 includes a rotating frame 131, in which a plurality of push plates 132 are fixedly arranged. The pretreatment filter box 1 is provided with an impeller drive motor 14 on the outside. The pretreatment filter box 1 has impurity discharge outlets 15 on both sides corresponding to the ends of the arc-shaped section 122 of the filter grid 12. The push plates 132 and the rotating frame 131 are arranged at an angle in the radial direction. This angle allows the push plates 132 to buffer the water flow rate and push the impurities out. The push plate 132 is made of flexible woven steel wire, possessing a certain degree of toughness to prevent mechanical compression of impurities between it and the filter grid 12, thus preventing equipment damage. The push plate 132 also pushes filtered impurities out and slows the flow velocity of wastewater on the filter grid 12, preventing wastewater from directly crossing the arc section 122 of the filter grid 12 due to inertia. The impeller drive motor 14 is a low-speed DC motor with a slow output speed, enabling the push plate 132 to effectively slow the flow velocity of wastewater falling along the filter grid 12 and stably push filtered impurities out. The two-stage filter grids 12 are arranged in opposite directions, enabling secondary interception and purification of wastewater. The first-stage filter grid intercepts large-particle impurities, while the second-stage filter grid intercepts fine suspended solids. Combined with the elastic push plate 132 of the automatic impurity-removing impeller 13, continuous automatic discharge of impurities is achieved without affecting water flow.

[0024] The treatment tank 2 is equipped with a main water inlet pipe 21, a water level window 22 on the side of the treatment tank 2, a chemical addition pipe 23 on the top of the treatment tank 2, a drain pipe 24 at the bottom of the treatment tank 2, and a stirring device 4 inside the treatment tank 2; the main water inlet pipe 21 is used to add wastewater that has been filtered for impurities into the treatment tank 2, and unfiltered wastewater is added to the treatment tank 2 through the pretreatment filter box 1; The stirring device 4 includes a stirring drive device 40 fixedly installed on the top of the treatment tank 2 and a stirring actuator rotatably installed in the treatment tank 2. The stirring drive device 40 includes a drive motor and a reducer. The stirring actuator includes a drive shaft 400, a multi-dimensional stirring structure, and a tank bottom sludge cleaning stirring structure. The drive shaft 400 is connected to the output shaft of the stirring drive device 40. A support beam 50 is fixedly connected in the treatment tank 2. The drive shaft 400 is rotatably connected in the support beam 50. The multi-dimensional stirring structure is fixedly connected to the upper part of the drive shaft 400, and the tank bottom sludge cleaning stirring structure is fixedly connected to the lower part of the drive shaft 400. A multi-dimensional stirring transmission mechanism is provided between the bottom of the multi-dimensional stirring structure and the support beam 50. The drive motor changes the power transmission direction through the reducer, reduces the motor output speed, and increases the motor output torque. An output shaft is located below the reducer.

[0025] The multi-dimensional stirring structure includes a support frame 41, which is fixedly connected to the drive shaft 400. Stirring tanks 42 are fixedly connected to both ends of the support frame 41. Spiral blades 43 are rotatably mounted on both ends of the support frame 41 and are coaxially arranged within the stirring tanks 42. An auxiliary support rod 44 is fixedly connected between the two stirring tanks 42; the auxiliary support rod 44 is used to improve the structural strength of the stirring actuator. In the multi-dimensional stirring structure, the stirring tank 42 can act as the stirring blades in a conventional stirring structure, horizontally rotating and stirring the wastewater and chemicals under the drive of the stirring drive device 40. Simultaneously, the spiral blades 43 in the stirring tank 42 rotate under the action of its transmission mechanism, vertically stirring the wastewater in the treatment tank 2, making the wastewater and chemicals mix more thoroughly, avoiding uneven distribution of chemicals due to reaction stratification, and improving stirring efficiency. This mechanism does not require an additional drive motor. When the support frame 41 revolves around the drive shaft 400, the meshing action of the drive gear 61 and the fixed gear disk 60 achieves rotation. Then, the synchronous belt 62 drives the spiral blade 43 to rotate, realizing the coordinated transmission of "revolution + rotation", which simplifies the structure and improves the stirring efficiency.

[0026] The main water inlet pipe 21 is equipped with an inlet control valve 210, and the drain pipe 24 is equipped with a drain control valve. The top of the treatment tank 2 is equipped with a guardrail, and the side of the treatment tank 2 is equipped with a ladder. The guardrail is connected above the ladder, and the guardrail has a notch corresponding to the ladder.

[0027] The bottom of the processing tank 2 is fixedly connected to a support frame 200, and the main body of the processing tank 2 includes an upper cylindrical body 201 and a lower conical bottom 202.

[0028] The sediment discharge device 3 includes a sewage pipe 31, which is connected to the bottom of the treatment tank 2. A sewage discharge drive motor 32 is fixedly installed at one end of the sewage pipe 31, and a cover 33 is fixedly installed at the end of the sewage pipe 31 away from the sewage discharge drive motor 32. A spiral pusher blade is rotatably installed in the sewage pipe 31, and a discharge outlet 35 is provided on the side of the sewage pipe 31 near the cover 33. The spiral pusher blade in the sewage pipe 31 rotates under the drive of the sewage discharge drive motor 32, and with the stirring action of the tank bottom cleaning and stirring structure, the sediment at the bottom of the treatment tank 2 can be effectively discharged. The wastewater after reaction treatment can be directly discharged from the treatment tank 2 through the drain pipe 24, and the sediment produced by the reaction can be efficiently discharged through the sediment discharge device 3.

[0029] The pretreatment filter box 1 is equipped with a pretreatment agent addition pipe 100 on one side, an inspection door 101 on one side, and an inspection cover 102 fixedly installed on the upper part of one side. Several lifting rings are provided on the top of the pretreatment filter box 1 for easy hoisting. The pretreatment agent addition pipe 100 is used to add pretreatment agent to unfiltered wastewater. The inspection door 101 and inspection cover 102 of the pretreatment filter box 1 allow for maintenance of the filter grid 12 and the automatic cleaning impeller 13, respectively. The guardrail and ladder on the top of the treatment tank facilitate maintenance of the stirring drive device 40 by staff. The overall structural design balances operational efficiency and maintenance convenience. The pretreatment agent can be selected from flocculants suitable for livestock wastewater, such as polyferric sulfate (PFS) and cationic polyacrylamide (C-PAM), and is added through the pretreatment agent addition pipe (100).

[0030] The multi-dimensional stirring transmission mechanism includes a fixed gear disc 60, a drive gear 61, and a synchronous transmission mechanism. The synchronous transmission mechanism is housed within a support frame 41 and rotates around a drive shaft 400 along with the support frame 41. The synchronous transmission mechanism includes a synchronous belt 62, with a first transmission pulley 63 and a second transmission pulley 64 respectively fitted at both ends. The first transmission pulley 63 is coaxially arranged with the drive gear 61, and the second transmission pulley 64 is connected to the shaft of the spiral blade 43. The drive gear 61 rotatably meshes with the fixed gear disc 60 and rotates around the fixed gear disc 60 under the drive of the support frame 41. A cover plate is rotatably mounted on the fixed gear disc 60, rotating with the drive gear 61 to prevent impurities in the wastewater from entering the fixed gear disc 60. When the support frame 41 drives the synchronous transmission mechanism to rotate relative to the fixed gear disk 60, the drive gear 61 will also rotate under the meshing action with the fixed gear disk 60, thereby driving the spiral blade 43 to rotate through the transmission action of the synchronous transmission structure, thus playing the role of vertical stirring.

[0031] The tank bottom sludge cleaning and stirring structure includes a disc 70, the middle of which is fixedly connected to a drive shaft 400, and a scraper 71 is fixedly connected between the disc 70 and the lower end of the drive shaft 400.

[0032] When in use, this device can be operated through two water inlet methods: livestock wastewater that has undergone preliminary filtration can be quickly added to the treatment tank 2 through the main water inlet pipe 21; untreated livestock wastewater is added to the treatment tank 2 after being filtered through the pretreatment filter box 1, and at the same time, pretreatment agent is evenly added to the wastewater through the pretreatment agent addition pipe 100. The addition direction is consistent with the water flow direction after the wastewater is added at the wastewater addition end 11 to ensure that the pretreatment agent and wastewater are fully mixed.

[0033] When the sewage flows through the pretreatment filter box, it passes through the upper primary and lower secondary filter grids 12 arranged in opposite directions. The inclined section 121 slows down the water flow speed, and the arc-shaped section 122 intercepts fibers and solid impurities. The impeller drive motor 14 is started to drive the automatic impurity cleaning impeller 13 to rotate. The elastic push plate 132 on the rotating frame 131 fits against the arc-shaped section 122 and pushes the intercepted impurities to the impurity discharge outlets 15 on both sides for discharge.

[0034] The filtered wastewater enters treatment tank 2. The liquid level is observed through water level window 22. After adding purification agents through agent addition pipe 23, the stirring drive device 40 is started. The drive shaft 400 drives the support frame 41 to rotate, and the stirring tank 42 achieves horizontal stirring. At the same time, in the multi-dimensional stirring transmission mechanism, the drive gear 61 revolves around the fixed gear disk 60 and rotates on its own axis. Through the synchronous belt 62, it drives the transmission pulley 63 and the transmission pulley 64 to rotate, which in turn drives the spiral blades 43 in the stirring tank to stir vertically, achieving multi-dimensional mixing, improving stirring efficiency, and making the reaction between the agent and the wastewater more complete.

[0035] The bottom cleaning and stirring structure at the bottom of the drive shaft 400 rotates with the shaft, and the disc 70 and scraper 71 remove the sediment from the conical bottom 202 to prevent accumulation. After the reaction is completed, the drain control valve of the drain pipe 24 is opened to discharge the purified wastewater; the sediment is treated by the sediment discharge device, which starts the sewage discharge drive motor 32, drives the spiral pusher blades in the sewage discharge pipe 31 to rotate, and pushes the sediment out of the discharge outlet 35.

[0036] This equipment reduces the risk of clogging at the source by using a two-stage filter screen in the pretreatment filter box with an automatic impeller for cleaning. The innovative multi-dimensional stirring system improves the efficiency of the reagent reaction. Combined with the conical tank bottom and spiral sewage discharge structure, it ensures that the sediment is completely discharged. It is suitable for the treatment needs of livestock wastewater with high organic matter and high suspended solids, and takes into account both stability and convenience.

[0037] This solution also includes a controller, the location of which is set by the operator according to the actual situation during operation. The controller is used to control the electrical components used in this solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, displays, computer input devices, switches, communication devices, lights, speakers, and microphones. The controller is an Intel processor, AMD processor, PLC controller, ARM processor, or microcontroller. It is used in conjunction with a motherboard, memory modules, storage media, and power supply, which is AC power or a lithium battery. When a display screen is provided, a graphics card is also included. For the operating principle of the controller, please refer to "Principles of Automatic Control," "Microcontroller Principles and Application Simulation Cases," and "Sensor Principles and Applications" published by Tsinghua University Press. Other books in this field can also be consulted. Other automation control and electrical components not mentioned are knowledge well known to those skilled in the art and will not be described in detail here.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A livestock wastewater purification and treatment device, comprising a pretreatment filter box (1), a treatment tank (2), and a sediment discharge device (3), characterized in that: The pretreatment filter box (1) is fixedly installed on the treatment tank (2), and the sediment discharge device (3) is fixedly installed at the bottom of the treatment tank (2). The bottom of the pretreatment filter box (1) is connected to the inside of the treatment tank (2). The treatment tank (2) is provided with a main water inlet pipe (21), a water level window (22) is provided on the side of the treatment tank (2), a chemical addition pipe (23) is provided on the top of the treatment tank (2), a drain pipe (24) is provided at the bottom of the treatment tank (2), and a stirring device (4) is provided in the treatment tank (2) to achieve multidimensional uniform mixing of sewage and chemical agents.

2. The livestock wastewater purification and treatment equipment according to claim 1, characterized in that: The pretreatment filter box (1) is provided with a wastewater addition end (11) on one side. The pretreatment filter box (1) is provided with a filtration mechanism, which includes a filter grid (12). The filter grid (12) includes a primary filter grid located at the top and a secondary filter grid located at the bottom in the pretreatment filter box (1). The secondary filter grid has the same structure as the primary filter grid and is arranged in the opposite direction in the horizontal direction. The filter grid (12) includes an inclined section (121) and an arc-shaped section (122). The pretreatment filter... An automatic cleaning impurity impeller (13) is rotatably installed in the box (1). The bottom of the automatic cleaning impeller (13) is in contact with the arc-shaped section (122) of the filter grid (12). The automatic cleaning impeller (13) includes a rotating frame (131). Several push plates (132) are fixedly provided in the rotating frame (131). A impeller drive motor (14) is provided outside the pretreatment filter box (1). Impurity discharge ports (15) corresponding to the ends of the arc-shaped section (122) of the filter grid (12) are provided on both sides of the pretreatment filter box (1).

3. The livestock wastewater purification and treatment equipment according to claim 1, characterized in that: The stirring device (4) includes a stirring drive device (40) fixedly installed on the top of the treatment tank (2) and a stirring actuator rotatably installed in the treatment tank (2). The stirring drive device (40) includes a drive motor and a reducer. The stirring actuator includes a drive shaft (400), a multi-dimensional stirring structure, and a tank bottom sludge cleaning stirring structure. The drive shaft (400) is connected to the output shaft of the stirring drive device (40). A support beam (50) is fixedly connected in the treatment tank (2). The drive shaft (400) is rotatably connected in the support beam (50). The upper part of the drive shaft (400) is fixedly connected to the multi-dimensional stirring structure. The lower part of the drive shaft (400) is fixedly connected to the tank bottom sludge cleaning stirring structure. A multi-dimensional stirring transmission mechanism is provided between the bottom of the multi-dimensional stirring structure and the support beam (50). The multidimensional stirring structure includes a support frame (41), which is fixedly connected to the drive shaft (400). The two ends of the support frame (41) are fixedly connected to the stirring tank (42). Spiral blades (43) are rotatably installed at both ends of the support frame (41). The spiral blades (43) are coaxially arranged in the stirring tank (42). An auxiliary support rod (44) is fixedly connected between the two stirring tanks (42).

4. The livestock wastewater purification and treatment equipment according to claim 1, characterized in that: The main water inlet pipe (21) is equipped with a water inlet control valve (210), and the drain pipe (24) is equipped with a drain control valve.

5. The livestock wastewater purification and treatment equipment according to claim 1, characterized in that: The bottom of the processing tank (2) is fixedly connected to a support frame (200), and the main body of the processing tank (2) includes an upper cylindrical body (201) and a lower conical bottom (202).

6. The livestock wastewater purification and treatment equipment according to claim 1, characterized in that: The sediment discharge device (3) includes a sewage pipe (31), the side of which is connected to the bottom of the treatment tank (2). A sewage drive motor (32) is fixedly installed at one end of the sewage pipe (31), and a cover (33) is fixedly installed at the end of the sewage pipe (31) away from the sewage drive motor (32). A spiral pusher blade is rotatably installed in the sewage pipe (31), and an outlet (35) is provided on the side of the sewage pipe (31) near the cover (33).

7. The livestock wastewater purification and treatment equipment according to claim 1, characterized in that: The pretreatment filter box (1) is provided with a pretreatment agent addition pipe (100) on one side, and a maintenance door (101) is provided on one side of the pretreatment filter box (1). A maintenance cover plate (102) is fixedly installed on the upper part of one side of the pretreatment filter box (1).

8. The livestock wastewater purification and treatment equipment according to claim 1, characterized in that: The multidimensional stirring transmission mechanism includes a fixed gear disc (60), a drive gear (61), and a synchronous transmission mechanism. The synchronous transmission mechanism is set inside the support frame (41) and rotates around the drive shaft (400) with the support frame (41). The synchronous transmission mechanism includes a synchronous belt (62), and the two ends of the synchronous belt (62) are respectively fitted with a first transmission pulley (63) and a second transmission pulley (64). The first transmission pulley (63) is coaxially arranged with the drive gear (61), and the second transmission pulley (64) is connected to the shaft of the spiral blade (43). The drive gear (61) rotates and meshes in the fixed gear disc (60). The drive gear (61) rotates around the fixed gear disc (60) under the drive of the support frame (41).

9. The livestock wastewater purification and treatment equipment according to claim 1, characterized in that: The tank bottom sludge cleaning and stirring structure includes a disc (70), the middle of which is fixedly connected to a drive shaft (400), and a scraper (71) is fixedly connected between the disc (70) and the lower end of the drive shaft (400).

Images