CN107232132B

CN107232132B - Automatic pig feeding method

Info

Publication number: CN107232132B
Application number: CN201710476366.XA
Authority: CN
Inventors: 周鹏; 李钢; 彭海; 李维强; 陈小龙; 陈禹杉; 韦克森; 田宁静
Original assignee: Chongqing University of Technology
Current assignee: Chongqing University of Technology
Priority date: 2017-06-21
Filing date: 2017-06-21
Publication date: 2020-03-13
Anticipated expiration: 2037-06-21
Also published as: CN107232132A

Abstract

The invention discloses an automatic feeding method for pigs, which is characterized in that two electrodes are positioned in a feed trough to detect whether the electrodes are conducted or not by depending on the conductivity of wet materials so as to judge the quantity of the wet materials in the feed trough and carry out feeding control. The invention has the advantages of more convenient detection of the wet material amount in the feed trough, accurate detection result, simple operation and convenient implementation.

Description

Automatic pig feeding method

Technical Field

The invention relates to the technical field of automatic control equipment of pig farms; in particular to an automatic pig feeding method.

Background

Pig farm equipment is a general term for special machinery, tools and internal facilities used in the feeding process of sows, piglets, boars and pork pigs. The pig farm equipment is different in operation direction, scale size, production level and mechanization level of the pig farm, and mainly comprises a pigsty, feeding equipment, an automatic water dispenser, excrement removing equipment, pig excrement treatment equipment and the like. The feeding equipment is the most used equipment in the current pig farm equipment, and the manpower can be better liberated by using the feeding equipment, so that centralized and intelligent management is realized. Most of the existing feeding equipment is used for feeding materials into a feed trough at regular time and fixed quantity, and if the pigs are full, the feeding devices are used for feeding materials, so that the feed is wasted. The excessive feed stored in the trough can be acidified and deteriorated in summer, the excessive feed stored in the trough can be frozen and hardened in winter, the feed is wasted, and after the pigs eat the deteriorated feed or the frozen and hardened feed, the pigs are easy to get ill, so that the yield of the pigs is reduced.

To solve the problem, Chinese patent CN 202068815U discloses a pig feed trough residual material detection device, which comprises a feed trough and an intelligent control system for controlling blanking, wherein the bottom of the feed trough is provided with at least two sensors for detecting whether food exists in the feed trough; the sensor is directly connected with the intelligent control system to control blanking; if at least more than one sensor is completely covered by the feed, the information is fed back to the intelligent control system, and the electronic ear tag of the pig cannot be fed even if the electronic ear tag of the pig is detected until the pig eats the residual feed.

Above-mentioned pig feed bunk leftovers detection device for whether have the leftovers in the detection feed bunk, if have the leftovers, just can not feed in raw material, avoid the waste of fodder, but still have following defect: 1. among the above-mentioned sensor that sets up among the detection device, at least one sensor is covered by the fodder completely, just can not the unloading, but the fodder generally is wet material, and wet material is viscidity, can adhere to the sensor for the sensor is in the state of being covered all the time, just can not the unloading all the time, makes the feed bunk not wet material for a long time, influences the growth and development of pig. 2. The feeding can be carried out as long as no feed is available in the feed trough regardless of whether the pigs need to eat the feed, but the situation that the pigs are full is not considered, and the feed is wasted. 3. When the pig is fed, regular feeding cannot be realized, and the health of the pig and the taste of pork are affected.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a pig automatic feeding method which can automatically control discharging, has simple structure and convenient use.

In order to solve the technical problems, the invention adopts the following technical scheme:

an automatic feeding method for pigs is characterized in that two electrodes are arranged in a feed trough to detect whether the electrodes are conducted or not to judge the quantity of wet materials in the feed trough by means of the conductivity of the wet materials, and feeding control is performed.

According to the automatic feeding method for the pigs, the two electrodes are positioned in the feed trough to detect whether the wet materials are conducted or not so as to judge the quantity of the wet materials in the feed trough according to the conductivity of the wet materials, and the detection result is high in accuracy. When the two electrodes are conducted, the situation that wet materials exist in the feed trough is proved, the materials are not fed into the feed trough, and waste of the wet materials is avoided. When the two electrodes are not conducted, the feeding can be fed into the feed trough, and the normal feeding of the pigs is ensured.

As optimization, a controller connected with the electrodes is adopted for feeding control, the controller is provided with a free feeding mode and a timing feeding mode, when the controller is in the free feeding mode, the controller detects that the two electrodes are in a conduction state, feeding is not carried out in the feed trough, and when the controller detects that the two electrodes are not in the conduction state, feeding is carried out in the feed trough; when the controller is in a timing feeding mode, the timing feeding mode comprises a feeding time interval and a dormancy time interval which are set in a circulating mode, in the feeding time interval, if the controller detects that the two electrodes are in a non-conduction state, feeding is carried out in the feed trough, if the controller detects that the two electrodes are in a conduction state, feeding is not carried out in the feed trough, and if the controller detects that the continuous conduction time of the two electrodes exceeds the set time, the controller automatically enters the dormancy time interval; in the dormancy period, no matter whether two electrodes are conducted or not, the materials are not fed into the feed trough until the dormancy period is finished, and the next feeding period comes.

Like this, adopt a controller that links to each other with the electrode to throw material control, the controller is provided with free ingestion mode and timing ingestion mode, can set up the controller according to actual need. When the controller is in the free feeding mode, as long as two electrodes are in a non-conduction state, the feeding can be fed into the feed trough, and the situation that the feed is always fed in the feed trough is ensured so as to ensure the diet of the pigs. When the controller is in the timing feeding mode, the timing feeding mode comprises a feeding time interval and a dormancy time interval which are set in a circulating mode, the feeding quantity of the pigs can be fed in a small quantity and multiple times every day, and the time rhythm of the feeding of the pigs is better controlled. In the time slot of food intake, as long as two electrodes do not switch on, will throw the material to the manger in, switch on at two electrodes, just can not throw the material to the manger in, exceed the settlement time when continuous on-time, can confirm that the pig is full, just automatic entering dormancy time slot, in the dormancy time slot, no matter two electrodes switch on, can not throw the material to the manger in, the food intake of control pig that can be better, the waste of wet material of avoiding that simultaneously also can be better.

The automatic feeding method of the pigs is realized by adopting a feeding trough wet material detection feeding device, the feeding trough wet material detection feeding device comprises an installation support, a feed bin is fixedly installed on the installation support, a feed inlet for feeding is formed in the upper end of the feed bin, a discharge outlet for discharging is formed in the lower end of the feed bin, a discharge mechanism for controlling the opening and closing of the discharge outlet is arranged at the discharge outlet, and a feeding trough for containing wet materials is arranged below the discharge outlet; the feeding device is characterized by further comprising two electrodes for detecting whether wet materials exist in the feed trough, the electrodes are arranged at intervals, the lower ends of the electrodes penetrate into the feed trough, and the upper ends of the electrodes are electrically connected with the controller.

Like this, the wet material of manger detects feeding device is provided with a installing support, installs the feed bin on the installing support, and the feed bin upper end is provided with the feed inlet that is used for the feeding, and the lower extreme is provided with the discharge gate that is used for the ejection of compact, and discharge gate department is provided with discharge mechanism, and discharge mechanism is connected with the controller, is provided with two electrodes that are used for detecting wet material in the manger, and the electrode is connected with the controller. Adding wet materials into a feed bin from a feed inlet, and when the two electrodes are in a non-conduction state, controlling a discharge mechanism to open a discharge outlet by a controller to feed materials into a feed trough; when the two electrodes are in a conducting state, the controller controls the discharging mechanism to close the discharging hole, and the feeding is not carried out in the feed trough. The operation is simple, the implementation is convenient, and the waste of wet materials can be better avoided.

As optimization, the controller comprises a voltage reduction and voltage stabilization power supply module, a CPU main control chip, a dial switch adjusting module, an electrode detection circuit, a blanking motor driving module and a shaking motor driving module; the voltage reduction and voltage stabilization power supply module is used for converting the input voltage into the voltage required by the CPU main control chip, the blanking motor driving module and the shaking motor driving module; the dial switch adjusting module comprises two dial switches, one of the dial switches is used for transmitting a control signal to the CPU main control chip so as to adjust the CPU main control chip into a free ingestion mode or a timing ingestion mode, and the other dial switch is used for transmitting the control signal to the CPU main control chip so as to control the feeding speed of the blanking motor; the electrode detection circuit is used for transmitting an electrode detection signal to the CPU main control chip, the CPU main control chip transmits a pulse signal to the blanking motor driving module to drive the blanking motor to rotate so as to feed, and in the feeding process, the CPU main control chip transmits a control signal to the shaking motor driving module at intervals so as to drive the shaking motor to drive the stock bin to shake and prevent the material from being adhered to the inner wall.

Like this, the control mode is simple reasonable, and convenient the regulation can select different modes of feeding to different pigs, the better requirement of feeding that satisfies the pig.

Preferably, the two electrodes are respectively arranged on two opposite sides of the feed trough.

Like this, set up two electrodes respectively in the relative both sides of manger, can be so that detection range is wider, and the testing result is more accurate.

As optimization, the discharging mechanism comprises a transmission rod vertically arranged in the storage bin, the lower end of the transmission rod is fixedly connected with a blade, the lower end of the blade is provided with a horizontal plate-shaped disc, the diameter of the disc is smaller than that of the discharging port, and the disc is fixedly connected with the discharging port through a connecting block; the blanking motor is arranged over the storage bin in a right-faced mode, and an output shaft of the blanking motor is arranged downwards and is fixedly connected with the upper end of the transmission rod; the feeding motor drives the transmission rod to rotate when acting, and the transmission rod drives the blades to rotate so as to shift wet materials between the blades into a gap between the disc and the discharge hole to enable the wet materials to freely fall into the feed trough.

Therefore, the wet material has the characteristics of viscosity and poor flowability, so that the disc is arranged at the discharge port, and the wet material cannot fall into the feed trough from a gap between the disc and the discharge port. When the controller detects that the two electrodes are in a non-conduction state, the blanking motor acts to drive the transmission rod and the blades arranged at the lower end of the transmission rod to rotate, and the blades can stir wet materials above the disc to the gap between the disc and the discharge hole to enable the wet materials to freely fall into the feed trough.

As optimization, the feed bin sets up to back taper structural style, the vertical downwardly extending of feed bin lower extreme forms the play feed cylinder that is the tubular structure form, it constitutes to go out feed cylinder lower extreme opening the discharge gate, be provided with annular fender material ring in the play feed cylinder, it sets up to keep off the material ring the discharge gate top, keep off the outer lane fixed connection of material ring on going out the feed cylinder inner wall, the inner circle is followed go out the radial direction downward sloping of feed cylinder and extend the setting, the blade and the disc all sets up just be located in the play feed cylinder keep off the material ring below, the disc diameter is greater than keep off the diameter of material ring inner circle.

Like this, the feed bin sets up to back taper structural style, can be so that the wet material in the feed bin slides to the discharge gate direction under self action of gravity to the ejection of compact. The vertical downwardly extending of feed bin lower extreme forms the play feed cylinder that is the tubular structure form, is provided with annular fender material ring in the play feed cylinder, and the disc diameter is greater than keep off the diameter of material ring inner circle, be provided with and keep off the material ring can be better avoid when not needing the ejection of compact, wet material is because self gravity flows out in the clearance between disc and the discharge gate, avoids the waste of wet material. And keep off material ring outer lane fixed connection on ejection of compact section of thick bamboo inner wall, the inner circle sets up along the radial direction downward sloping of ejection of compact section of thick bamboo, also can be better make wet material slide to keeping off material ring inner circle direction under self gravity, unloading that can be better.

Preferably, the diameter of the circle where the outer end of each blade is located is larger than the inner diameter of the material blocking ring.

Therefore, the blades can stir wet materials better, and the discharging efficiency is improved.

Preferably, the blades are fixedly connected with supporting rods, and one ends, far away from the blades, of the supporting rods are lapped on the material blocking rings.

Like this, because wet material quality is bigger, fixedly connected with bracing piece on the blade, the one end overlap joint that the blade was kept away from to the bracing piece is on keeping off the material ring, can be so that the better bearing of blade, guarantees the intensity of whole device, still does not influence the rotation of blade simultaneously.

Preferably, the lower end of the transmission rod is provided with external threads, a through hole vertically penetrates through the middle of the disc, the diameter of the through hole is larger than that of the transmission rod and smaller than the distance between opposite sides of a nut screwed on the lower end of the transmission rod, and the lower end of the transmission rod penetrates through the through hole and is screwed on the transmission rod by the nut to support the disc.

Like this, the transfer line lower extreme is provided with the external screw thread, and the vertical through-hole that runs through in the middle of the disc is provided with, the diameter of through-hole is greater than the diameter of transfer line is less than and is used for closing soon the distance between the nut opposite side of transfer line lower extreme can make the transfer line free rotation in the through-hole, and the diameter of through-hole is less than and is used for closing soon moreover the distance between the nut opposite side of transfer line lower extreme, the wet material of avoiding that can be better flows from the clearance between through-hole and the transfer line, improves the accuracy. Meanwhile, the nut is utilized to play a certain supporting role in the middle of the disc, so that the disc can bear better, and the stability of the whole device is improved.

Preferably, a buffer spring is sleeved on the transmission rod between the nut and the disc.

Like this, the cover has buffer spring on the transfer line between nut and disc, when reinforced or wet material is heavier to the feed bin in, utilizes the spring to play certain cushioning effect to the disc, avoids the deformation damage of disc.

In conclusion, the invention has the advantages of more convenient detection of the wet material amount in the feed trough, accurate detection result, simple operation and convenient implementation.

Drawings

Fig. 1 is a schematic structural diagram of a feeding device for detecting wet feed of a feeding trough in accordance with an embodiment of the present invention.

Fig. 2 is a top view of the take-off cylinder of fig. 1.

Fig. 3 is a circuit block diagram of the controller of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the specific implementation: as shown in fig. 1-3, an automatic feeding method for pigs depends on the conductivity of wet materials, adopts two electrodes 5 to enable the electrodes to be positioned in a feed trough 3 to detect whether the electrodes are conducted or not so as to judge the amount of the wet materials in the feed trough 3, and carries out feeding control.

In the specific embodiment, a controller 4 connected with electrodes 5 is adopted for feeding control, the controller 4 is provided with a free feeding mode and a timing feeding mode, when the controller 4 is in the free feeding mode, the controller 4 detects that the two electrodes 5 are in a conducting state, feeding is not carried out in a feed trough, and when the controller 4 detects that the two electrodes 5 are not in the conducting state, feeding is carried out in the feed trough; when the controller 4 is in the timing feeding mode, the timing feeding mode comprises a feeding period and a sleeping period which are set in a circulating mode, in the feeding period, if the controller 4 detects that the two electrodes 5 are not in a conduction state, feeding is carried out in the trough, if the controller 4 detects that the two electrodes are in the conduction state, feeding is not carried out in the trough, and if the controller 4 detects that the continuous conduction time of the two electrodes 5 exceeds the set time, the controller 4 automatically enters the sleeping period; in the dormancy period, no matter whether two electrodes 5 are conducted or not, the materials are not fed into the feed trough until the dormancy period is finished and the next feeding period comes.

In the specific embodiment, the automatic feeding method of the pigs is realized by adopting a feeding trough wet material detection feeding device which comprises an installation support 1, wherein a feed bin 2 is fixedly installed on the installation support 1, the upper end of the feed bin 2 is provided with a feed inlet for feeding, the lower end of the feed bin 2 is provided with a discharge outlet for discharging, a discharge mechanism for controlling the opening and closing of the discharge outlet is arranged at the discharge outlet, and a feeding trough 3 for containing wet materials is arranged below the discharge outlet; the utility model discloses a feeding trough, including installing support 1, controller 4, discharge mechanism, still including being used for detecting whether have two electrodes 5 of wet material in the

manger

3, 5 intervals of electrode set up and the lower extreme is deepened in the

manger

3, 5 upper ends of electrode with 4 electric connection of controller.

In this embodiment, referring to fig. 3, the controller includes a voltage-reducing and voltage-stabilizing power supply module, a CPU main control chip, a dial switch adjusting module, an electrode detection circuit, a blanking motor driving module, and a shaking motor driving module; the voltage reduction and voltage stabilization power supply module is used for converting the input voltage into the voltage required by the CPU main control chip, the blanking motor driving module and the shaking motor driving module; the dial switch adjusting module comprises two dial switches, one of the dial switches is used for transmitting a control signal to the CPU main control chip so as to adjust the CPU main control chip into a free ingestion mode or a timing ingestion mode, and the other dial switch is used for transmitting the control signal to the CPU main control chip so as to control the feeding speed of the blanking motor; the electrode detection circuit is used for transmitting an electrode detection signal to the CPU main control chip, the CPU main control chip transmits a pulse signal to the blanking motor driving module to drive the blanking motor to rotate so as to feed, and in the feeding process, the CPU main control chip transmits a control signal to the shaking motor driving module at intervals so as to drive the shaking motor to drive the stock bin to shake and prevent the material from being adhered to the inner wall.

In this embodiment, the two electrodes 5 are respectively disposed on two opposite sides of the feeding trough 3.

In the specific embodiment, the discharging mechanism comprises a transmission rod 7 vertically arranged in the bin 2, the lower end of the transmission rod 7 is fixedly connected with a blade 71, the lower end of the blade 71 is provided with a horizontal flat-plate-shaped disc, the diameter of the disc is smaller than that of the discharging port, and the disc is fixedly connected with the discharging port through a connecting block; the blanking motor 6 is arranged over the storage bin 2 in a right-to-right manner, and an output shaft of the blanking motor 6 is arranged downwards and is fixedly connected with the upper end 7 of the transmission rod; when the blanking motor 6 acts, the transmission rod 7 is driven to rotate, and the transmission rod 7 drives the blades 71 to rotate so as to shift wet materials between the blades 71 into a gap between the disc and the discharge hole, so that the wet materials freely fall into the feed trough 3.

In this embodiment, the feed bin 2 sets up to back taper structural style, the vertical downwardly extending of 2 lower extremes of feed bin forms the play feed cylinder 21 that is the tubular structure form, go out feed cylinder 21 lower extreme opening and constitute the discharge gate, be provided with annular fender material ring 22 in going out feed cylinder 21, it sets up to keep off material ring 22 the discharge gate top, the outer lane fixed connection that keeps off material ring 22 is in go out on the feed cylinder 21 inner wall, the inner circle is followed go out the radial direction downward sloping of feed cylinder 21 and extend the setting, blade 71 and the disc all sets up just be located in the feed cylinder 21 keep off material ring 22 below, the disc diameter is greater than keep off the diameter of material ring 22 inner circle.

In this embodiment, the diameter of the circle where the outer ends of the blades 71 are located is larger than the inner diameter of the baffle ring 22.

Therefore, the blades can stir wet materials better, and the discharging efficiency is improved. In a practical implementation, the diameter of the circle where the outer end of the blade is located may be smaller than or equal to the inner diameter of the material blocking ring, and the device also belongs to the implementable range of the device.

In this embodiment, the supporting rod 23 is fixedly connected to the blade 71, and one end of the supporting rod 23, which is far away from the blade 71, is lapped on the material blocking ring 22.

In this specific embodiment, the lower end of the transmission rod 7 is provided with an external thread, a through hole vertically penetrates through the middle of the disk, the diameter of the through hole is larger than the diameter of the transmission rod 7 and is smaller than the distance between the opposite sides of a nut which is screwed on the lower end of the transmission rod 7, and the lower end of the transmission rod 7 penetrates through the through hole and is screwed on the transmission rod 7 by the nut to support the disk.

In this embodiment, a buffer spring is sleeved on the transmission rod 7 between the nut and the disk.

Like this, the cover has buffer spring on the transfer line between nut and disc, when reinforced or wet material is heavier to the feed bin in, utilizes the spring to play certain cushioning effect to the disc, avoids the deformation damage of disc. Of course, in specific implementation, an elastic rubber pad can be arranged between the nut and the disc, and the device also belongs to the implementable range of the device.

In this embodiment, the feeding trough 3 is fixedly connected below the mounting bracket 1.

Like this, manger fixed mounting can avoid the pig to arch the manger away when eating food in the installing support below, leads to the fact later unable problem that detects whether there is wet material in the manger.

In this embodiment, the middle of the feeding trough 3 protrudes upwards to form a conical structure, and the conical structure is opposite to the discharge hole.

Like this, the epirelief forms a conical body structure in the middle of the manger, can be so that the wet material that comes out from the discharge gate is whole to reach the conical body peripheral, can be so that the better food of eating of pig, avoids arching out the manger with wet material is whole, causes the waste of wet material.

Claims

1. An automatic feeding method for pigs is characterized in that two electrodes (5) are arranged in a feed trough (3) to detect whether the electrodes are conducted or not by depending on the conductivity of wet materials so as to judge the quantity of the wet materials in the feed trough (3) and carry out feeding control;

the feeding control is carried out by adopting a controller (4) connected with the electrodes (5), the controller (4) is provided with a free feeding mode and a timing feeding mode, when the controller (4) is in the free feeding mode, the controller (4) detects that the two electrodes are in a conducting state, the feeding is not carried out in the feed trough (3), and when the controller (4) detects that the two electrodes are not in the conducting state, the feeding is carried out in the feed trough (3); when the controller (4) is in a timing feeding mode, the timing feeding mode comprises a feeding time interval and a sleep time interval which are set in a circulating mode, in the feeding time interval, if the controller (4) detects that the two electrodes are not in a conduction state, feeding is carried out in the feed trough (3), if the controller (4) detects that the two electrodes are in the conduction state, feeding is not carried out in the feed trough (3), and if the controller (4) detects that the continuous conduction time of the two electrodes (5) exceeds the set time, the controller (4) automatically enters the sleep time interval; in the dormancy period, no matter whether the two electrodes (5) are conducted or not, the materials are not fed into the feed trough (3) until the dormancy period is finished and the next feeding period comes;

the feeding device for detecting the wet feed of the feeding trough comprises a mounting bracket (1), wherein a feed bin (2) is fixedly mounted on the mounting bracket (1), a feed inlet for feeding is formed in the upper end of the feed bin (2), a discharge outlet for discharging is formed in the lower end of the feed bin (2), a discharge mechanism for controlling the opening and closing of the discharge outlet is arranged at the discharge outlet, and a feeding trough (3) for containing the wet feed is arranged below the discharge outlet; the feeding device comprises a mounting support (1), a controller (4) and two electrodes (5), wherein the controller (4) is arranged above the mounting support (1), connected with a discharging mechanism and used for detecting whether wet materials exist in a feed trough (3), the electrodes (5) are arranged at intervals, the lower ends of the electrodes penetrate into the feed trough (3), and the upper ends of the electrodes (5) are electrically connected with the controller (4);

the controller comprises a voltage reduction and voltage stabilization power supply module, a CPU main control chip, a dial switch adjusting module, an electrode detection circuit, a blanking motor driving module and a shaking motor driving module; the voltage reduction and voltage stabilization power supply module is used for converting the input voltage into the voltage required by the CPU main control chip, the blanking motor driving module and the shaking motor driving module; the dial switch adjusting module comprises two dial switches, one of the dial switches is used for transmitting a control signal to the CPU main control chip so as to adjust the CPU main control chip into a free ingestion mode or a timing ingestion mode, and the other dial switch is used for transmitting the control signal to the CPU main control chip so as to control the feeding speed of the blanking motor; the electrode detection circuit is used for transmitting an electrode detection signal to the CPU main control chip, the CPU main control chip transmits a pulse signal to the blanking motor driving module to drive the blanking motor to rotate so as to feed, and in the feeding process, the CPU main control chip transmits a control signal to the shaking motor driving module at intervals so as to drive the shaking motor to drive the stock bin to shake and prevent the material from being adhered to the inner wall.

2. The automatic pig feeding method according to claim 1, characterized in that two electrodes (5) are arranged on opposite sides of the trough (3).

3. The automatic pig feeding method according to claim 2, wherein the discharging mechanism comprises a transmission rod (7) vertically arranged in the storage bin (2), a blade (71) is fixedly connected to the lower end of the transmission rod (7), a horizontal plate-shaped disc is arranged at the lower end of the blade (71), the diameter of the disc is smaller than that of the discharging port, and the disc is fixedly connected with the discharging port through a connecting block; the blanking motor (6) is arranged over the storage bin (2) in a right-facing manner, and an output shaft of the blanking motor (6) is arranged downwards and is fixedly connected with the upper end of the transmission rod (7); the feeding motor (6) drives the transmission rod (7) to rotate when acting, and the transmission rod (7) drives the blades (71) to rotate so as to shift wet materials between the blades (71) to a gap between the disc and the discharge hole to enable the wet materials to freely fall into the feed trough (3).

4. The automatic pig feeding method according to claim 3, wherein the stock bin (2) is arranged in an inverted cone structure, the lower end of the stock bin (2) vertically extends downwards to form a discharge barrel (21) in a barrel structure, the discharge port is formed by an opening at the lower end of the discharge barrel (21), an annular blocking ring (22) is arranged in the discharge barrel (21), the blocking ring (22) is arranged above the discharge port, the outer ring of the blocking ring (22) is fixedly connected to the inner wall of the discharge barrel (21), the inner ring is arranged in a manner of inclining downwards in the radial direction of the discharge barrel (21), the blades (71) and the disc are arranged in the discharge barrel (21) and below the blocking ring (22), and the diameter of the disc is larger than that of the inner ring of the blocking ring (22).

5. The automatic pig feeding method according to claim 4, characterized in that the diameter of the circle where the outer ends of the blades (71) are located is larger than the inner diameter of the baffle ring (22).

6. The automatic pig feeding method according to claim 5, characterized in that a support rod (23) is fixedly connected to the blade (71), and one end of the support rod (23) far away from the blade (71) is lapped on the baffle ring (22).

7. The automatic pig feeding method according to claim 4, characterized in that the lower end of the driving rod (7) is provided with an external thread, a through hole is vertically arranged in the middle of the disk in a penetrating manner, the diameter of the through hole is larger than the diameter of the driving rod (7) and is smaller than the distance between the opposite sides of a nut screwed on the lower end of the driving rod (7), the lower end of the driving rod (7) penetrates through the through hole and is screwed on the driving rod (7) by the nut to support the disk.