A device for automatically cleaning and washing a trough of an SPF mini pig and a control method thereof

Abstract

The application discloses a kind of SPF small pig trough automatic cleaning cleaning device and control method thereof, it is related to trough cleaning device technical field, including tank, cleaning device is arranged on tank, cleaning device includes pre-rinse mechanism, disinfection flushing mechanism, the control program of pre-rinse mechanism and disinfection flushing mechanism is controlled by PLC controller and executes as needed and in order, by PLC controller, each electrical component is collaboratively worked, preset pre-spraying, brushing, sewage, disinfection, secondary flushing, drying reset standardization operation process, replace traditional manual experience operation chaotic mode, realize the standardization and precision of trough cleaning and killing operation, accurately match the stringent standard of SPF small pig sterile breeding, eliminate the cleaning and disinfection blind area of traditional fixed nozzle by disinfection flushing mechanism, can cover the area such as easily hiding dirt and dirt area of inner wall, corner, gap in trough, efficiently strip stubborn residue, completely kill attached microorganism, greatly improve cleaning and killing quality.

Description

Technical Field

[0001] This invention relates to the technical field of feed trough cleaning devices, specifically to an SPF small-sized automatic cleaning device for pig feed troughs and its control method. Background Technology

[0002] SPF miniature pigs are specific pathogen-free experimental model animals widely used in high-end scientific research fields such as biomedical research and development, toxicology testing, and vaccine trials. The sterility, standardization, and cleanliness of their breeding environment directly determine the accuracy and reliability of experimental data. They have extremely stringent requirements for the cleaning and disinfection standards of breeding equipment. As the core equipment for daily feeding of miniature pigs, the feed trough is in direct contact with feed and the pigs' mouths for a long time. After feeding, feed residue, mucus, and various microorganisms are easily left in the trough. If the residue accumulates and is not cleaned in time, bacteria, mold, and other harmful microorganisms will quickly grow, causing feed trough contamination. This will then destroy the sterile breeding environment of the SPF pig house, cause health problems in the pigs, and seriously affect the scientific validity and reproducibility of the experiment.

[0003] Currently, in domestic SPF miniature pig farming, the cleaning and disinfection of feed troughs mostly relies on manual labor. A few simple cleaning devices only have basic spraying functions, exhibiting numerous technical deficiencies and industry pain points. Manual cleaning is highly random, with no fixed standards for cleaning, disinfection, wastewater discharge, and drying processes. The work sequence is chaotic, and different operators vary greatly in cleaning intensity, disinfection time, and rinsing range, easily leading to residual dirt in corners and crevices of the troughs and incomplete disinfection. This fails to meet the aseptic standards of SPF farming. Furthermore, existing equipment lacks standardized wastewater discharge, drying, and negative pressure compensation structures. Cleaning wastewater and residue easily splash out, causing secondary pollution, and damp troughs are prone to bacterial regeneration. Simultaneously, wastewater suction can disrupt the negative pressure balance in the pigsty, damaging the positive pressure balance of the breeding barrier. This fails to meet the essential requirements of aseptic, standardized, and intelligent SPF miniature pig farming. Therefore, there is an urgent need for an intelligent, fully automated, and blind-spot-free automatic cleaning device for SPF miniature pig feed troughs, along with corresponding control methods, to address the many shortcomings of existing technologies. Summary of the Invention

[0004] This invention provides an automatic cleaning device and control method for SPF small pig feed troughs, which can effectively solve the problems mentioned in the background art, such as the strong randomness of manual cleaning mode, the residual stains on the corners and gaps of the trough, the incomplete disinfection, and the secondary pollution that existing equipment can easily cause during the sewage discharge process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an SPF small pig feed trough automatic cleaning device, comprising a trough body, wherein a cleaning device is provided on the trough body, and the cleaning device includes a pre-rinsing mechanism and a disinfection rinsing mechanism; The control programs for the pre-rinsing mechanism and the disinfection rinsing mechanism are controlled by a PLC controller and executed as needed and in sequence. The PLC controller controls the electrical connections of sensors, behavior analysis transmission, solenoid valves, motors, hot air drying devices, and suction valves. The pre-rinsing mechanism includes a brushing component and a tilting component. The brushing component includes a rotating shaft disposed above the tank body, a nylon brush disposed on the rotating shaft, a spray pipe disposed above the nylon brush, and a plurality of fan-shaped nozzles disposed on the spray pipe. The tilting component includes hinged support rods disposed on both sides of the tank body, and connecting rods disposed on the hinged support rods. The pre-rinsing mechanism is used for brushing residue from the tank body. The disinfection and rinsing mechanism includes fixed seats symmetrically arranged on the tank body, a bidirectional lead screw is provided through the fixed seat, disinfection pipelines are symmetrically connected to the outer surface of the bidirectional lead screw, and a guide frame is provided at the bottom of the disinfection pipelines. The disinfection and rinsing mechanism is used for the comprehensive disinfection and rinsing of the tank body.

[0006] Preferably, the pre-rinsing mechanism further includes a residual feed detection sensor installed at the bottom of the tank and a feeding behavior data device installed on the inner wall of the tank. The residual feed detection sensor is used to detect the distribution and residual amount of leftover feed in the tank in real time. The feeding behavior data device is used to connect via a wired or wireless communication interface to acquire the feeding behavior status data of each pen of pigs in real time, and analyze the behavior, including whether there are still pigs standing and eating in the feeding area, the length of time after the pigs leave the feeding area, and the feeding activity score.

[0007] Preferably, the flipping assembly of the pre-rinsing mechanism further includes a railing set on one side of the tank, with feeding trough lifting drive rods symmetrically arranged on both sides of the railing, and the outer surface of the feeding trough lifting drive rods being threadedly connected to the end of the connecting rod.

[0008] Preferably, the brushing assembly of the pre-rinsing mechanism further includes a railing set on one side of the tank, on which brush lifting drive rods are symmetrically arranged. A guide rail is provided on the outer surface of the brush lifting drive rods, and a guide block is slidably arranged in the guide rail. The opposite surfaces of the guide blocks are fixedly connected to both ends of the rotating shaft.

[0009] Preferably, the bottom of the tank is provided with a sludge collection hood, the top of the sludge collection hood is provided with a covering grid, the bottom of the sludge collection hood is provided with an inverted V-shaped slope, and a drain pipe is connected to the lowest point of the bottom of the sludge collection hood, and the drain pipe is connected to a vacuum drain pipe network.

[0010] Preferably, the opening of the sludge collection hood is fully aligned with the pouring range of the tank after it is overturned, ensuring that all waste liquid and residue fall into the hood without splashing out during the overturning process.

[0011] Preferably, the disinfection and rinsing mechanism further includes a fixed plate fixedly installed on the side of the tank near the railing. A drive motor is fixedly installed on the fixed plate. A sealed housing is provided on the outer surface of the drive motor. A magnetic coupler is provided on the sealed housing. A drive shaft is provided on the magnetic coupler. A synchronous belt is sleeved on the end of the drive shaft and the outer surface of the bidirectional lead screw.

[0012] Preferably, a limiting rod is fixedly installed on one side of the bidirectional lead screw between the fixed seats, and the outer surface of the limiting rod is slidably connected to the end of the disinfection pipeline.

[0013] Preferably, a guide frame is provided at the bottom of the end of the disinfection pipeline away from the limiting rod, and a support roller is provided at the bottom of the disinfection pipeline, with the outer surface of the support roller attached to the tank.

[0014] Preferably, a control method for an automatic cleaning and washing device for SPF small pig feed troughs is applied to an automatic cleaning and washing device for SPF small pig feed troughs, comprising the following steps: S1: First, pre-spray and moisten the tank. Open the solenoid valve of the spray pipeline through the PLC controller to spray warm water onto the inner surface of the tank for 10 to 15 seconds to soften the residue adhering to the inner wall of the tank. S2: Next, perform a rotating scrubbing process. Use a nylon brush to spiral along the inner surface of the tank while the spray pipe sprays water intermittently for 30 to 60 seconds to scrub away the residue on the inner wall of the tank. S3: Next, pour out the wastewater. Drive the tank to rotate forward to 110° to 120° to pour out the mixture of residue and wastewater generated from the washing process. The rotation action lasts for about 20 to 30 seconds. After completion, the tank is returned to the horizontal feeding position. S4: Then perform disinfection spraying. Turn on the disinfection pipeline and spray 0.2% peracetic acid solution evenly onto the inner surface of the tank, covering and leaving it for 1 to 2 minutes. S5: Then, high-pressure rinsing is performed. The spray pipe is reopened to rinse away the disinfectant and any remaining traces of dirt with clean water for 20 to 30 seconds. The rinsing waste liquid is then turned over and poured out through the tilting component. S6: Then hot air drying is carried out. The hot air drying device is started, and clean hot air filtered by H13 grade HEPA filter is blown into the tank and blown continuously for 3 to 5 minutes until the inner surface of the tank is completely dry. S7: After the tank is dried, it is reset by the flipping component and the feeding is resumed, and the tank is restored to a clean state ready for feeding.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses a PLC controller to coordinate the collaborative operation of various electrical components, and pre-sets a standardized operation process of pre-spraying, brushing, sewage discharge, disinfection, secondary rinsing, and drying and resetting. This replaces the chaotic mode of traditional manual operation based on experience, and completely avoids the problems of omissions in manual cleaning processes, uneven cleaning intensity, and inconsistent disinfection standards. It achieves standardization and precision in the cleaning and disinfection of feed troughs, and precisely matches the stringent standards of SPF aseptic breeding of miniature pigs. This invention adapts to different tank heights through an adaptively adjustable brushing component, a mobile disinfection pipeline, and a brush lifting structure. It conforms to the tank wall to complete all-round mechanical brushing. At the same time, it relies on a bidirectional screw to drive the disinfection pipeline to open and close symmetrically. With the help of limiting, guiding, and anti-deviation structures, it completely eliminates the cleaning and disinfection blind spots of traditional fixed nozzles. It can fully cover the inner wall, corners, gaps and other areas that are prone to dirt accumulation in the tank, effectively remove stubborn residues, and thoroughly kill attached microorganisms, greatly improving the quality of cleaning and disinfection. This invention uses a dual data collection system of residual feed detection sensor and feeding behavior data device to accurately identify the feeding status of pigs and the residue in the feed trough. The cleaning program is automatically started only when feeding ends and there are residual stains, eliminating ineffective cleaning and frequent idle operation. While ensuring a clean breeding environment, it effectively saves water resources and equipment operating energy consumption, and reduces breeding operation costs. This invention achieves full-coverage collection of cleaning residue and waste liquid through a controllable tilting tank structure combined with a bottom sludge collection hood and an inverted V-shaped sloping sewage discharge structure, preventing secondary pollution caused by splashing of dirt. At the same time, the sewage discharge system is connected to a vacuum sewage discharge network and a wet heat inactivation tank, so that the dirt is sterilized at 121°C before being discharged, completely blocking the transmission path of pathogenic microorganisms and meeting the biosafety control requirements of SPF aquaculture. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0017] In the attached diagram: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram from another perspective of the present invention; Figure 3 This is the present invention. Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the dirt collection hood structure of the present invention; Figure 5 This is a schematic diagram of the bottom structure of the tank in this invention; Figure 6 This is a schematic diagram of the internal structure of the tank in this invention; Figure 7 This is a partially enlarged structural diagram of the disinfection pipeline of the present invention; Figure 8 This is a block diagram of the intelligent control principle of the present invention; Figure 9 This is a flowchart of the automatic cleaning control method of the present invention; Numbering on the map: 1. Tank body; 2. Pre-rinsing mechanism; 201. Residual material detection sensor; 202. Feeding behavior data device; 203. Brushing assembly; 204. Spray pipe; 205. Fan-shaped nozzle; 206. Brush lifting drive rod; 207. Guide rail; 208. Guide block; 209. Rotating shaft; 210. Nylon brush; 211. Sludge collection hood; 212. Inverted V-shaped ramp; 213. Sludge pipe; 214. Covering grid; 215. Tilting assembly; 216. Fence; 217. Hinge support rod; 218. Connecting rod; 219. Feed trough lifting drive rod; 3. Disinfection and rinsing mechanism; 301. Fixing plate; 302. Drive motor; 303. Magnetic coupler; 304. Drive shaft; 305. Fixing seat; 306. Two-way lead screw; 307. Limiting rod; 308. Synchronous belt; 309. Disinfection pipeline; 310. Guide frame; 311. Support roller. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] Example: Figures 1 to 7 As shown, the present invention provides a technical solution for an automatic cleaning device for SPF small pig feed troughs, including a trough body 1, on which a cleaning device is provided. The cleaning device includes a pre-rinsing mechanism 2 and a disinfection rinsing mechanism 3. The trough body 1 and the cleaning device are both designed to be detachable. The control programs for the pre-rinsing mechanism 2 and the disinfection rinsing mechanism 3 are controlled by a PLC controller and executed as needed and in sequence. The PLC controller controls the electrical connections of sensors, behavior analysis transmission, solenoid valves, motors, hot air drying devices, and suction valves. In the above embodiments, the PLC controller coordinates the collaborative work of various electrical components. Relying on the data feedback from sensor data acquisition and behavior analysis, it accurately triggers various processes such as pre-rinsing, disinfection, sewage discharge, and drying. At the same time, the solenoid valve and motor realize the automated switching of water circuit and mechanical action. With the help of hot air drying device and suction valve, the waste liquid and waste gas are treated. This completely solves the problems of strong randomness, chaotic process and inconsistent cleaning standards in traditional manual cleaning. It is suitable for the standardized and sterile breeding scenario of SPF miniature pigs. The pre-rinsing mechanism 2 softens the residue in the tank 1 and then brushes it. Then, the disinfection and rinsing mechanism 3 performs a second disinfection and rinsing to ensure that the tank 1 remains clean after the pigs have finished eating, and avoids the long-term accumulation of residue in the tank.

[0020] like Figures 1 to 4 As shown, the pre-rinsing mechanism 2 includes a brushing assembly 203 and a flipping assembly 215. The brushing assembly 203 includes a rotating shaft 209 disposed above the tank 1, a nylon brush 210 disposed on the rotating shaft 209, a spray pipe 204 disposed above the nylon brush 210, and a plurality of fan-shaped nozzles 205 disposed on the spray pipe 204. The flipping assembly 215 includes hinged support rods 217 disposed on both sides of the tank 1, and a connecting rod 218 disposed on the hinged support rods 217. The pre-rinsing mechanism 2 is used for brushing the residue in the tank 1. In the above embodiment, through the coordinated operation of the scrubbing component 203 and the flipping component 215, water is first sprayed through the spray pipe 204 to soften the dried feed residue in the tank 1. Then, the nylon brush 210 is driven to rotate at high speed through the rotating shaft 209 to complete the comprehensive scrubbing of the inner wall. Finally, the wastewater and residue are completely dumped through the flipping component 215. The pre-cleaning operation of the feed tank is completed in steps, effectively removing most of the solid residue and attached stains inside the tank 1, laying a clean foundation for subsequent fine disinfection and rinsing.

[0021] The pre-rinsing mechanism 2 also includes a residual feed detection sensor 201 installed at the bottom of the tank 1 and a feeding behavior data device 202 installed on the inner wall of the tank 1. The residual feed detection sensor 201 is used to detect the distribution and residual amount of leftover feed in the tank in real time. The feeding behavior data device 202 is used to connect via wired or wireless communication interface to obtain the feeding behavior status data of each pen of pigs in real time. The analysis of behavior includes whether there are still pigs standing and eating in the feeding area, the length of time after the pigs leave the feeding area, and the feeding activity score. Hot air drying devices are installed on both sides of the tank 1. The hot air drying devices include a set of electric heating tubes or PTC ceramic heating elements in conjunction with a small centrifugal fan. After being filtered by a high-efficiency air filter, clean hot air is blown into the tank 1 to quickly dry the tank 1 and prevent bacteria from growing on the damp surface. The high-efficiency air filter is an H13 grade HEPA filter to ensure that the filtration efficiency of particulate matter with a diameter ≥0.3μm in the air blown into the tank 1 is ≥99.97%. In the above embodiment, the PLC controller is provided with accurate operation triggering basis through dual data acquisition by the residual feed detection sensor 201 and the feeding behavior data device 202. The pre-rinsing program is automatically started only when the pigs have completely left the feeding area, the feeding operation in the feed trough has ended, and residual feed stains are detected in the trough. This avoids frequent and ineffective cleaning, which not only ensures the hygiene of the breeding environment, but also effectively saves water resources and equipment energy consumption, and realizes intelligent on-demand cleaning.

[0022] Furthermore, the flipping assembly 215 of the pre-rinsing mechanism 2 also includes a railing 216 disposed on one side of the tank 1. Feeding trough lifting drive rods 219 are symmetrically arranged on both sides of the railing 216. The outer surface of the feeding trough lifting drive rods 219 is threadedly connected to the end of the connecting rod 218. The brushing assembly 203 of the pre-rinsing mechanism 2 also includes a railing 216 disposed on one side of the tank 1. Brush lifting drive rods 206 are symmetrically arranged on the railing 216. A guide rail 207 is disposed on the outer surface of the brush lifting drive rods 206. A guide block 208 is slidably disposed in the guide rail 207. The opposite surfaces of the guide blocks 208 are fixedly connected to both ends of the rotating shaft 209. A sludge collection hood 211 is provided at the bottom of the tank body 1, a covering grid 214 is provided at the top of the sludge collection hood 211, an inverted V-shaped ramp 212 is provided at the bottom of the sludge collection hood 211, and a drain pipe 213 is connected to the lowest point of the bottom of the sludge collection hood 211. The drain pipe 213 is connected to the vacuum drain pipe 213. The opening of the sludge collection hood 211 is completely aligned with the pouring range of the tank body 1 after it is overturned, ensuring that all waste liquid and residue fall into the hood without splashing out when it is overturned. In the above embodiment, the brush lifting drive rod 206, together with the guide rail 207 and guide block 208, constitutes a brush lifting sliding structure. The height position of the nylon brush 210 can be adaptively adjusted according to the depth of the tank 1 to ensure that the brush is completely in contact with the inner wall of the tank 1, adapting to the brushing needs of different feeding amounts and different residual stains. At the same time, the feed trough lifting drive rod 219 precisely controls the flipping angle and lifting height of the tank 1 to ensure that the flipping and sewage discharge action is smooth, accurate, without jamming or deviation. Then, the cleaning waste liquid is transported by the sewage collection hood 211 at the bottom to the wet heat inactivation tank outside the barrier area through the sewage pipe 213 under the negative pressure suction. After sterilization treatment at 121°C for 30 minutes, it is discharged. At the same time as the vacuum suction valve is opened, the intelligent control module sends a signal to the air conditioning system to instantly increase the fresh air supply volume of the pig house by 5% to 10% to compensate for the slight negative pressure disturbance caused by suction and maintain the stability of the barrier positive pressure.

[0023] like Figures 1 to 3 as well as Figures 5 to 7As shown, the disinfection and rinsing mechanism 3 includes a fixed seat 305 symmetrically arranged on the tank 1. A bidirectional screw 306 is provided through the fixed seat 305. A disinfection pipeline 309 is symmetrically connected to the outer surface of the bidirectional screw 306. A guide frame 310 is provided at the bottom of the disinfection pipeline 309. The disinfection and rinsing mechanism 3 is used for the comprehensive disinfection and rinsing of the tank 1. In the above embodiment, the bidirectional transmission characteristics of the bidirectional screw 306 drive the disinfection pipes 309 on both sides to open and close synchronously. Compared with the fixed disinfection nozzle, it can fully cover all corners of the tank 1, eliminate disinfection blind spots, and ensure that the inner wall, corners, gaps and other places where bacteria are easily left behind in the tank 1 can be disinfected and sprayed, thoroughly killing the bacteria and microorganisms attached to the surface of the feed trough, and meeting the aseptic feeding standards for SPF miniature pig farming.

[0024] Furthermore, the disinfection and rinsing mechanism 3 also includes a fixing plate 301 fixedly installed on the side of the tank 1 near the railing 216. A drive motor 302 is fixedly installed on the fixing plate 301. A sealed housing is provided on the outer surface of the drive motor 302. A magnetic coupler 303 is provided on the sealed housing. A drive shaft 304 is provided on the magnetic coupler 303. A synchronous belt 308 is sleeved on the ends of the outer surfaces of the drive shaft 304 and the bidirectional lead screw 306. A limiting rod 307 is fixedly installed on one side of the bidirectional lead screw 306 between the fixed seats 305. The outer surface of the limiting rod 307 is slidably connected to the end of the disinfection pipeline 309. A guide frame 310 is provided at the bottom of the end of the disinfection pipeline 309 away from the limiting rod 307. A support roller 311 is provided at the bottom of the disinfection pipeline 309. The outer surface of the support roller 311 is attached to the tank body 1. The disinfection pipeline 309 is powered by a drive motor 302. The drive motor 302 is covered with a sealed shell, which can effectively block moisture and dust in the breeding environment, prevent the motor from getting damp and dusty, and improve the waterproof and dustproof performance and service life of the equipment. The magnetic coupler 303 mounted on the sealed shell transmits power to the drive shaft 304, and then the synchronous belt 308 drives the power to achieve stable transmission. The limit rod 307 guides and limits the movement of the disinfection pipeline 309, preventing the disinfection pipeline 309 from deviating or shaking as the screw rotates. At the same time, the outer surface of the support roller 311 slides against the surface of the tank 1, which can greatly reduce the frictional resistance of the disinfection pipeline 309 during movement and ensure smooth operation. In the above embodiments, a stable power transmission structure is formed by the drive motor 302, the magnetic coupler 303, and the synchronous belt 308. The magnetic coupler 303 can achieve flexible transmission, buffer the impact force of starting and stopping, and reduce the noise and wear of the equipment. At the same time, the multiple limiting and guiding structure of the limiting rod 307, the guide frame 310, and the supporting roller 311 ensures that the disinfection pipeline 309 moves smoothly and moves accurately, effectively avoiding the problem of uneven disinfection caused by pipeline deviation and shaking during spray disinfection, and further improving the accuracy and stability of disinfection operation.

[0025] Based on the above-mentioned SPF small pig feed trough automatic cleaning device, this invention also provides a matching automated control method. Through a PLC controller with a preset program, various mechanisms are linked to operate in an orderly manner, realizing the fully automated operation of the feed trough from residue softening, scrubbing and sewage discharge, disinfection and rinsing to drying and resetting. Specifically, it includes the following steps: S1, Pre-spraying and wetting: The PLC controller outputs a control signal to automatically open the solenoid valve of the spray pipe 204, and sprays constant temperature warm water evenly onto the inner wall of the tank 1. The spraying time is controlled to be 10 to 15 seconds. The warm water softens the dried and sticky feed residue on the inner wall of the tank 1, breaks the adsorption state between the residue and the tank wall, reduces the difficulty of subsequent mechanical scrubbing operations, and avoids damage to the tank 1 and brush by hard scrubbing. S2, Rotary Deep Scrubbing: After the pre-spraying is completed, the PLC controller starts the brush lifting drive rod 206 and the rotating shaft 209 drive mechanism, which drives the nylon brush 210 to spirally rotate and scrub against the inner wall of the tank 1. At the same time, the spray pipe 204 is controlled to spray water intermittently to assist in rinsing. The continuous scrubbing time is 30 to 60 seconds. Through mechanical rotation scrubbing combined with water rinsing, residual feed and stains inside the tank 1 and in the corners and gaps are completely removed, and the pre-cleaning operation of the tank 1 is fully completed. S3, Tilting and Discharging Sewage: After the washing operation is completed, the PLC controller activates the tilting assembly 215 of the trough 1, driving the trough 1 to tilt forward 110° to 120° via the feeding trough lifting drive rod 219. This completely dumps the residue and sewage mixture generated during washing into the bottom sludge collection hood 211. The tilting operation lasts for 20 to 30 seconds to ensure that the sewage is completely emptied. After the sewage discharge is completed, the drive trough 1 automatically returns to the initial horizontal feeding position, awaiting subsequent disinfection operations. S4, Disinfectant spray disinfection: After the tank 1 is reset, the disinfection and rinsing mechanism 3 is started. The PLC controller controls the drive motor 302 to work, which drives the bidirectional lead screw 306 to rotate and drives the disinfection pipelines 309 on both sides to move at a uniform speed. At the same time, the disinfection spray is turned on, and 0.2% peracetic acid disinfectant is sprayed evenly on the inner surface of the tank 1 to ensure that the disinfectant completely covers all contact surfaces of the tank 1. The disinfectant is left to soak naturally for 1 to 2 minutes. By utilizing the broad-spectrum bactericidal properties of peracetic acid, the bacteria, fungi and microorganisms attached to the surface of the tank 1 are completely killed to achieve sterile disinfection. S5, High-pressure water secondary rinse: After disinfection and settling, turn on the spray pipe 204 again and use clean high-pressure water to thoroughly rinse the inner wall of the tank 1 for 20 to 30 seconds to completely remove residual disinfectant, trace stains and microorganisms shed by disinfection, so as to avoid the residual disinfectant affecting the pigs' feeding health. After rinsing, turn on the tilting component 215 again to pour out all the rinsing waste liquid in the tank. S6, Clean Hot Air Drying: After rinsing and draining, the PLC controller starts the hot air drying device. After the external air is filtered and sterilized by the H13 grade HEPA filter, it forms sterile clean hot air, which continuously blows the inner wall of tank 1. The drying time is controlled at 3 to 5 minutes until the inner surface of tank 1 is completely free of water stains and moisture. The sterile hot air drying eliminates the growth of bacteria in the humid environment and ensures that the tank is clean and sterile for a long time. S7, Reset and resume feeding: After the tank 1 is completely dry, all mechanisms are reset, the flipping component 215, the brushing component 203, and the disinfection mechanism return to their initial standby positions, the equipment shuts down all cleaning, disinfection, and drying processes, the trough is restored to a clean and sterile state ready for feeding, and the feeding operation can be started at any time to complete a complete automated cleaning and disinfection process.

[0026] like Figures 8 to 9 As shown, the cleaning procedure of this device is not based on a fixed schedule, but on a combination of triggering conditions.

[0027] The controller determines that cleaning is required when both of the following conditions are met: First, the AI ​​behavior analysis system confirmed that all pigs in the pen had left the feeding area (no standing feeding behavior was detected in the feeding area for 5 consecutive minutes). Second, the residual material detection sensor 201 detects that the amount of residual feed in the trough is lower than the preset cleaning threshold (e.g., lower than 10% of the feed amount).

[0028] After the above conditions are met, delay for 3-5 minutes (allowing for a buffer time when the pigs may briefly return to feed), and the system will automatically start the cleaning program.

[0029] If, during the delay period before the cleaning program starts, the AI ​​behavior analysis system detects that a pig has re-entered the feeding area, the cleaning program will be automatically canceled, and the delay timer will be reset to zero for the next re-judgment. A manual emergency stop button is located outside the pigsty door, which can stop the cleaning process and reset the feed trough with one click in an emergency. The fault status of the device itself (such as spray pump overload, nylon brush 210 blockage, abnormal stroke of the tilting component 215, and insufficient negative pressure of the sewage pipe 213) is monitored in real time by the PLC. Any fault will trigger an immediate shutdown and alarm, and the alarm signal will be pushed to the management personnel terminal via the facility's central control platform.

[0030] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An SPF small-sized automatic cleaning and washing device for pig feed troughs, comprising a trough body (1), wherein a cleaning device is provided on the trough body (1), characterized in that: The cleaning device includes a pre-rinsing mechanism (2) and a disinfection rinsing mechanism (3); The control programs of the pre-rinsing mechanism (2) and the disinfection rinsing mechanism (3) are controlled by a PLC controller and executed as needed and in sequence. The PLC controller controls the electrical connections of sensors, behavior analysis transmission, solenoid valves, motors, hot air drying devices, and suction valves. The pre-rinsing mechanism (2) includes a brushing assembly (203) and a flipping assembly (215). The brushing assembly (203) includes a rotating shaft (209) disposed above the tank (1). A nylon brush (210) is disposed on the rotating shaft (209). A spray pipe (204) is disposed above the nylon brush (210). A plurality of fan-shaped nozzles (205) are disposed on the spray pipe (204). The flipping assembly (215) includes hinged support rods (217) disposed on both sides of the tank (1). A connecting rod (218) is disposed on the hinged support rods (217). The pre-rinsing mechanism (2) is used for brushing the residue in the tank (1). The disinfection and rinsing mechanism (3) includes a fixed seat (305) symmetrically arranged on the tank (1), a bidirectional screw (306) is provided through the fixed seat (305), a disinfection pipeline (309) is symmetrically connected to the outer surface of the bidirectional screw (306), and a guide frame (310) is provided at the bottom of the disinfection pipeline (309). The disinfection and rinsing mechanism (3) is used for the complete disinfection and rinsing of the tank (1).

2. The SPF small-scale automatic cleaning and washing device for pig feed troughs according to claim 1, characterized in that, The pre-rinsing mechanism (2) also includes a residual feed detection sensor (201) installed at the bottom of the tank (1) and a feeding behavior data device (202) installed on the inner wall of the tank (1). The residual feed detection sensor (201) is used to detect the distribution and residual amount of leftover feed in the tank in real time. The feeding behavior data device (202) is used to connect via a wired or wireless communication interface to obtain the feeding behavior status data of each pen of pigs in real time. The analysis of behavior includes whether there are still pigs standing and eating in the feeding area, the length of time after the pigs leave the feeding area, and the feeding activity score.

3. The SPF small-scale automatic cleaning and washing device for pig feed troughs according to claim 2, characterized in that, The flipping assembly (215) of the pre-rinsing mechanism (2) also includes a railing (216) on one side of the tank (1). The railing (216) is symmetrically provided with feeding trough lifting drive rods (219) on both sides. The outer surface of the feeding trough lifting drive rod (219) is threadedly connected to the end of the connecting rod (218).

4. The SPF small-scale automatic cleaning and washing device for pig feed troughs according to claim 3, characterized in that, The brushing assembly (203) of the pre-rinsing mechanism (2) also includes a brush lifting drive rod (206) set on the railing (216). A guide rail (207) is provided on the outer surface of the brush lifting drive rod (206). A guide block (208) is slidably arranged in the guide rail (207). The opposite face of the guide block (208) is fixedly connected to both ends of the rotating shaft (209).

5. The SPF small-scale automatic cleaning and washing device for pig feed troughs according to claim 4, characterized in that, The bottom of the tank (1) is provided with a sludge collection hood (211), the top of the sludge collection hood (211) is provided with a covering grid (214), the bottom of the sludge collection hood (211) is provided with an inverted V-shaped ramp (212), and a drain pipe (213) is connected to the lowest point of the bottom of the sludge collection hood (211). The drain pipe (213) is connected to the vacuum drain pipe (213).

6. The SPF small-scale automatic cleaning and washing device for pig feed troughs according to claim 5, characterized in that, The opening of the sludge collection hood (211) is fully aligned with the pouring range of the tank (1) after it is overturned, ensuring that all waste liquid and residue fall into the hood without splashing out when it is overturned.

7. The SPF small-scale automatic cleaning and washing device for pig feed troughs according to claim 1, characterized in that, The disinfection and rinsing mechanism (3) also includes a fixed plate (301) fixedly installed on the side of the tank (1) near the railing (216). A drive motor (302) is fixedly installed on the fixed plate (301). A sealed housing is provided on the outer surface of the drive motor (302). A magnetic coupler (303) is provided on the sealed housing. A drive shaft (304) is provided on the magnetic coupler (303). A synchronous belt (308) is sleeved on the ends of the drive shaft (304) and the outer surface of the bidirectional lead screw (306).

8. The SPF small-scale automatic cleaning and washing device for pig feed troughs according to claim 7, characterized in that, A limiting rod (307) is fixedly installed on one side of the bidirectional lead screw (306) between the fixed seats (305), and the outer surface of the limiting rod (307) is slidably connected to the end of the disinfection pipeline (309).

9. The SPF small-scale automatic cleaning and washing device for pig feed troughs according to claim 8, characterized in that, The bottom of the disinfection pipeline (309) away from the limiting rod (307) is provided with a guide frame (310), and the bottom of the disinfection pipeline (309) is provided with a support roller (311), the outer surface of the support roller (311) is attached to the tank (1).

10. A control method for an automatic cleaning and washing device for SPF small pig feed troughs is applied to the automatic cleaning and washing device for SPF small pig feed troughs according to claims 1 to 9, characterized in that, Includes the following steps: S1: First, pre-spray and moisten. Open the solenoid valve of the spray pipe (204) through the PLC controller and spray warm water onto the inner surface of the tank (1) for 10 to 15 seconds to soften the residue attached to the inner wall of the tank (1). S2: Next, a rotating scrubbing is performed. The nylon brush (210) is spirally pushed along the inner surface of the tank (1), while the spray pipe (204) sprays water intermittently for 30 to 60 seconds to scrub the residue on the inner wall of the tank (1). S3: Next, pour out the sewage and drive the tank (1) to flip forward to 110° to 120° to pour out the residue and sewage mixture generated by the washing in the tank. The flipping action lasts for about 20 to 30 seconds. After completion, the tank (1) is reset to the horizontal feeding position. S4: Then perform disinfection spraying. Open the disinfection pipeline (309) and spray 0.2% peracetic acid solution evenly onto the inner surface of the tank (1), covering and staying for 1 to 2 minutes; S5: Then high-pressure rinsing is performed, the spray pipe (204) is opened again, and the disinfectant and any remaining traces of dirt are rinsed away with clean water for 20 to 30 seconds. The rinsing waste liquid is then turned over and poured out again through the turning component (215). S6: Then hot air drying is carried out. The hot air drying device is started, and clean hot air filtered by H13 grade HEPA filter is blown into the tank (1) and blown continuously for 3 to 5 minutes until the inner surface of the tank (1) is completely dry. S7: After the tank (1) is dried, it is reset by the flipping component (215) and the feeding is restored. The tank (1) is restored to a clean state ready for feeding.

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