Raw material pretreatment device for pig feed production

Abstract

The invention discloses a raw material pretreatment device for pig feed production, and relates to the technical field of pig feed production, the raw material pretreatment device comprises a base, a material support, an inner cylinder and an outer cylinder, the inner cylinder is rotatably arranged on the inner wall of the outer cylinder, the two ends of the inner cylinder are rotatably arranged above the base, and the material support is located on the base under the outer cylinder; the inner cylinder and the outer cylinder are tightly attached and are respectively and uniformly provided with a plurality of inner sieve holes and outer sieve holes, the inner sieve holes and the outer sieve holes are the same in structure, the distance between the adjacent inner sieve holes is greater than the length of the outer sieve holes, the two ends of the inner cylinder and the outer cylinder are respectively provided with an inner end and an outer end, one surface of the outer end is uniformly provided with a plurality of assembly grooves, and the assembly grooves are internally and magnetically slidably provided with limiting teeth; limiting grooves meshed with the limiting teeth are formed in one face of the inner end, the outer end is driven by a second motor to rotate, and a center cylinder is arranged in the center of the interior of the inner cylinder. Through matched rotation of the inner cylinder and the outer cylinder, the size of the sieve pores can be adjusted without disassembling and replacing the inner cylinder or the outer cylinder, and the sieve is easy to operate and convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of pig feed production, in particular to a raw material pretreatment device for pig feed production. Background Art

[0002] Pig feed production is an important part of animal husbandry. Its quality directly affects the growth efficiency, health status and economic benefits of pigs. In the process of feed production, the pretreatment of raw materials is an important step to ensure the final quality of feed. The pretreatment stage can not only remove impurities and improve the purity of raw materials, but also optimize the efficiency of subsequent processing links and the uniformity of finished feed by cleaning, screening, crushing, conditioning, mixing and dust removal of raw materials.

[0003] For example, a raw material pretreatment device for pig feed production in "CN117882872A" comprises a raw material processing box, a water washing tank and a drying tank are respectively arranged on both sides of the upper surface of the raw material processing box, a flushing unit is installed in the water washing tank, and a horizontal displacement mechanism is set on the upper surface of the raw material processing box. The raw material pretreatment device for pig feed production is convenient for driving the cleaned raw materials to move by setting a fixed plate, a slider, a guide rod, a screw rod and a first driving motor, which is convenient for realizing mechanized movement and saving manpower and material resources. By setting a first lifting hydraulic cylinder, it is convenient to place raw materials on the upper cover plate, the cleaning cylinder and the lower cover plate, and it is convenient to put the raw materials into the water washing tank and take them out. By setting a connecting pipe, a water pump, a cleaning water box and a water spray hole, the cleaning cylinder is driven to rotate in cooperation with the second driving motor, so as to facilitate the rapid flushing of the raw materials in the cleaning cylinder, eliminate the flushing dead angle, and improve the flushing effect;

[0004] However, in the prior art, there are many kinds of raw materials for pig feed. Some raw materials, such as soybeans and wheat, usually need to be screened and cleaned. Since the sizes of these raw materials are different, for example, after using a screening device to screen soybean impurities, it is necessary to replace the screen on the screening device with a screen with a smaller aperture that is suitable for wheat. If there are many types of raw materials to be screened, manual intervention is required each time to replace the screen, and the operation is relatively complicated. Summary of the invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] The purpose of the present invention is to solve the problem in the prior art that when there are many raw materials to be screened and cleaned, the screen needs to be frequently replaced, resulting in complicated operations.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] On the one hand, the present invention provides a raw material pretreatment device for pig feed production, which includes a base, a material tray, an inner cylinder and an outer cylinder, wherein the inner cylinder is rotatably arranged on the inner wall of the outer cylinder, and the two ends of the inner cylinder are rotatably arranged above the base, and the material tray is located on the base directly below the outer cylinder, the inner cylinder and the outer cylinder are tightly fitted and are respectively and evenly provided with a plurality of inner sieve holes and outer sieve holes, the inner sieve holes and the outer sieve holes have the same structure, the spacing between adjacent inner sieve holes is greater than the length of the outer sieve holes, the inner cylinder and the outer cylinder are respectively provided with an inner end and an outer end at both ends, and the outer end One side is evenly provided with a plurality of assembly grooves, and the assembly grooves are magnetically slidably provided with limit teeth, and one side of the inner end is provided with a limit groove engaged with the limit teeth, and the outer end is driven to rotate by a second motor, and a center tube is provided at the center position inside the inner tube, and a guide arc is provided on the side wall of the center tube for sliding fit with the inner wall of the inner tube, and a nozzle is provided on the center tube, and an air duct and a feed pipe are respectively connected at both ends of the inner tube, and a discharge groove is provided at the edge of the end face of the inner tube at the feed pipe, and the end face of the inner tube is detachably sealed with an end plate.

[0009] Furthermore, a slide bar is provided on the inner side of the outer cylinder, and a slide groove is provided on the outer side of the inner cylinder, which is slidably engaged with the slide bar. The engagement and sliding of the slide bar and the slide groove can avoid the generation of an obvious gap between the inner cylinder and the outer cylinder, thereby effectively preventing impurities from entering between the inner cylinder and the outer cylinder and causing blockage.

[0010] Furthermore, the material support is arranged in an arc shape and has a diameter larger than the diameter of the outer cylinder. A discharge port is arranged at the center of the material support, and a guide plate is arranged under the material support on one side below the discharge port. Through the arranged material support, it is convenient to carry the material discharged from the sieve hole between the inner cylinder and the outer cylinder and discharge and collect it through the discharge port.

[0011] Furthermore, end shafts are symmetrically provided at both ends of the inner cylinder, and the end shafts are rotatably arranged on the base through a bracket. A first motor is provided on the base, and the end shafts are driven to rotate by the first motor. The air duct and the feed pipe are respectively inserted into the two end shafts.

[0012] Furthermore, the end plate is slidably sleeved on the outside of the end shaft, and the end face of the inner cylinder is assembled and connected to the end plate through the first cylinder. A sealing plug is provided at the edge of one side of the end plate close to the inner cylinder, and the sealing plug is adapted to the discharge trough. When the first cylinder contracts, the end plate moves toward the end face of the inner cylinder until the sealing plug is sealed and connected to the discharge trough. At this time, when the outer cylinder is rotated at a certain angle, the outer sieve hole and the inner sieve hole are completely staggered, so that water overflow can be avoided when water is injected into the inner cylinder, and the raw material in the inner cylinder can be cleaned by cooperating with the rotation of the inner cylinder.

[0013] Furthermore, a two-way air pump is provided on the base, one end of the air duct passes through the end shaft and extends to the inside of the inner cylinder, the other end of the air duct is sealed and rotatably connected to a fixed pipe, the fixed pipe is connected to the two-way air pump, and a filtering mechanism is provided at the air inlet end of the two-way air pump. The two-way air pump is used to absorb light impurities in the inner cylinder during filtering, and can be reversed when cleaning the material. Air can be blown into the inner cylinder after cleaning to quickly dry the material and the inner wall of the inner cylinder.

[0014] Furthermore, the filtering mechanism includes a water tank, a rotating wheel and a third motor. The water tank is arranged on a base, the fixed pipe is inclined to the output end of the two-way air pump, the rotating wheel is rotatably arranged on the inner wall of the fixed pipe located at the two-way air pump, the rotating wheel is driven to rotate by the third motor, and the lower end of the fixed pipe faces the inside of the water tank. Impurities in the fixed pipe are sucked into the water tank by the two-way air pump and fall into the water tank under the guidance of the rotating wheel, thereby preventing large particles of impurities from entering the two-way air pump. After the impurities come into contact with the water in the water tank, their own weight increases and they sink into the water.

[0015] Furthermore, the central cylinder is arranged inside the inner cylinder through a fixing frame, the feed pipe passes through one of the end shafts and extends into the inner cylinder, the nozzle passes through the feed pipe at one end away from the central cylinder and extends outside to be connected with an external water source, and water can be injected into the inner cylinder through the nozzle for cleaning materials.

[0016] Furthermore, the guide arc is arranged in an arc-shaped structure, and the center position of the guide arc is hinged to the outer wall of the center tube through a support bar. A second cylinder is arranged inside the center tube, and a soft strip is arranged at the output end of the second cylinder. A telescopic shaft is hinged on the outer wall of the center tube, and the output end of the telescopic shaft is hinged to the support bar. One end of the soft strip is assembled and connected to the output end of the telescopic shaft. A first spring is arranged inside the telescopic shaft. When the second cylinder is contracted, a part of the soft strip can be pulled into the center tube to shorten the telescopic shaft, and the support bar and the guide arc are pulled to bend a certain angle, so as to avoid guiding the material to the discharge trough through the guide arc during cleaning and stirring. The second cylinder extends, and the first spring pushes the telescopic shaft to extend and reset.

[0017] Furthermore, an electromagnetic ring is provided inside the inner end of the assembly groove, and the limiting tooth is provided at one inner end with a magnetic block which is arranged to be attracted to the electromagnetic ring. The limiting tooth is assembled and connected to the assembly groove through a second spring, and a side frame is provided on the base, and the second motor is arranged on the side frame. A gear ring is provided on the outer wall of the outer end, and the output end of the second motor is meshed with the gear ring. The outer end is driven to rotate by driving the second motor and then the outer cylinder is driven to rotate. The electromagnetic ring is electrically connected to an external power supply. When the outer cylinder is rotated, magnetism can be generated by energizing the electromagnetic ring, and it can be attracted to the magnetic block. The magnetic block compresses the second spring and shrinks it in the assembly groove, thereby separating from the limiting groove, and rotation can occur between the inner end and the outer end. Conversely, the power can be turned off after the rotation is completed.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention can adjust the size of the sieve hole by the coordinated rotation of the inner cylinder and the outer cylinder, without the need to disassemble or replace the inner cylinder or the outer cylinder, and is simple to operate and convenient to use.

[0020] 2. If the present invention is used to clean the material, the outer cylinder can be rotated first so that there is no gap between the inner cylinder and the outer cylinder, the material is introduced from the feed pipe, and the end plate on the end face of the inner cylinder is closed at the discharge trough to prevent liquid from overflowing, and then water is injected into the inner cylinder and the inner cylinder is rotated. The friction between the materials and the friction between the materials and the inner wall of the inner cylinder can clean the surface of the materials. After cleaning, the outer cylinder is rotated to connect the inner sieve holes with the outer sieve holes, the water is discharged, and the material is left in the inner cylinder. The end plate is separated from the discharge trough, and the inner cylinder is continued to be rotated to guide the cleaned material out of the discharge trough, thereby realizing multi-functional operation.

[0021] 3. The present invention drives the outer end to rotate by driving the second motor and then drives the outer cylinder to rotate. The electromagnetic ring is electrically connected to the external power supply. When the outer cylinder rotates, magnetism can be generated by energizing the electromagnetic ring, and the electromagnetic ring can be attracted to the magnetic block. The magnetic block compresses the second spring and shrinks it in the assembly groove, thereby separating from the limit groove, and then rotation can occur between the inner end and the outer end. Conversely, the power can be turned off after the rotation is completed.

[0022] 4. The present invention can avoid obvious gaps between the inner cylinder and the outer cylinder by engaging and sliding the slide bar and the slide groove, thereby effectively preventing impurities from entering between the inner cylinder and the outer cylinder and causing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 A three-dimensional diagram of a raw material pretreatment device for pig feed production provided by the present invention;

[0025] Figure 2 A three-dimensional diagram of a raw material pretreatment device for pig feed production provided by the present invention;

[0026] Figure 3 A schematic diagram of the internal structure of the inner cylinder and the outer cylinder of a raw material pretreatment device for pig feed production provided by the present invention;

[0027] Figure 4 A schematic diagram of a state in which an outer cylinder and a material tray are separated in a raw material pretreatment device for pig feed production provided by the present invention;

[0028] Figure 5 This is a schematic diagram of the assembly of the inner end and the outer end of a raw material pretreatment device for pig feed production provided by the present invention;

[0029] Figure 6 This is a schematic diagram of the assembly of the inner end and the outer end of a raw material pretreatment device for pig feed production provided by the present invention;

[0030] Figure 7 A schematic diagram of the positions of the outer sieve holes and the inner sieve holes of a raw material pretreatment device for pig feed production provided by the present invention;

[0031] Figure 8 A schematic diagram of the internal structure of a central cylinder of a raw material pretreatment device for pig feed production provided by the present invention;

[0032] Fig. 9 This is a schematic diagram of a filtering mechanism of a raw material pretreatment device for pig feed production provided by the present invention.

[0033] Legend:

[0034] 1. Base; 2. Material support; 3. Inner cylinder; 4. Outer cylinder; 511. Inner sieve hole; 512. Outer sieve hole; 611. Inner end; 612. Outer end; 711. Assembly groove; 712. Limiting tooth; 713. Limiting groove; 714. Second motor; 715. Center cylinder; 716. Guide arc; 717. Nozzle; 811. Air duct; 812. Feed pipe; 813. Discharge trough; 9. End plate; 101. Slide bar; 102. Slide trough; 111. Discharge port; 112. Drainage Plate; 121, end shaft; 122, bracket; 123, first motor; 131, first cylinder; 132, sealing plug; 141, two-way air pump; 142, fixed pipe; 143, water tank; 144, rotating wheel; 145, third motor; 151, fixed frame; 161, support bar; 162, second cylinder; 163, soft bar; 164, telescopic shaft; 165, first spring; 171, electromagnetic ring; 172, magnetic block; 173, second spring; 174, side frame. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, as referred to herein, "one embodiment" or "embodiment" refers to a specific feature, structure, or characteristic that can be included in at least one implementation of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0038] See also Figure 1-Figure 9The present invention provides a technical solution: a raw material pretreatment device for pig feed production, comprising a base 1, a material tray 2, an inner cylinder 3 and an outer cylinder 4, wherein the inner cylinder 3 is rotatably arranged on the inner wall of the outer cylinder 4, and both ends of the inner cylinder 3 are rotatably arranged above the base 1, and the material tray 2 is located on the base 1 directly below the outer cylinder 4, and the inner cylinder 3 and the outer cylinder 4 are tightly fitted and are respectively and evenly provided with a plurality of inner sieve holes 511 and outer sieve holes 512, the inner sieve holes 511 and the outer sieve holes 512 have the same structure, and the spacing between adjacent inner sieve holes 511 is greater than the length of the outer sieve holes 512, and the inner cylinder 3 and the outer cylinder 4 are respectively provided with an inner end 611 and an outer end 612, and one side of the outer end 612 is evenly provided with A plurality of assembly grooves 711 are provided, and a limit tooth 712 is provided in the assembly groove 711 for magnetic sliding. A limit groove 713 is provided on one side of the inner end 611 for meshing with the limit tooth 712. The outer end 612 is driven to rotate by a second motor 714. A central tube 715 is provided at the center position inside the inner tube 3. A guide arc 716 is provided on the side wall of the central tube 715 for sliding fit with the inner wall of the inner tube 3. A nozzle 717 is provided on the central tube 715. An air duct 811 and a feed pipe 812 are respectively connected at both ends of the inner tube 3. A discharge groove 813 is provided at the edge of the end face of the inner tube 3 at the feed pipe 812. The end face of the inner tube 3 is detachably sealed with an end plate 9.

[0039] like Figure 1-Figure 9 As shown, a slide bar 101 is provided on the inner side of the outer cylinder 4, and a slide groove 102 is provided on the outer side of the inner cylinder 3, which is engaged and slidably arranged with the slide bar 101. Through the engagement and sliding of the slide bar 101 and the slide groove 102, an obvious gap between the inner cylinder 3 and the outer cylinder 4 can be avoided, thereby effectively preventing impurities from entering between the inner cylinder 3 and the outer cylinder 4 and causing blockage.

[0040] like Figure 1-Figure 9 As shown, the material tray 2 is arranged in an arc shape and its diameter is larger than the diameter of the outer cylinder 4. A discharge port 111 is arranged at the center of the material tray 2, and a guide plate 112 is arranged under the material tray 2 on one side below the discharge port 111. Through the arranged material tray 2, it is convenient to carry the material discharged from the sieve holes between the inner cylinder 3 and the outer cylinder 4 and discharge and collect it through the discharge port 111.

[0041] like Figure 1-Figure 9 As shown, end shafts 121 are symmetrically provided at both ends of the inner tube 3. The end shafts 121 are rotatably set on the base 1 through a bracket 122. A first motor 123 is provided on the base 1. The end shaft 121 is driven to rotate by the first motor 123. The air duct 811 and the feed pipe 812 are respectively inserted into the two end shafts 121.

[0042] like Figure 1-Figure 9As shown, the end plate 9 is slidably sleeved on the outside of the end shaft 121, and the end face of the inner cylinder 3 is assembled and connected to the end plate 9 through the first cylinder 131. A sealing plug 132 is provided at the edge of one side of the end plate 9 close to the inner cylinder 3, and the sealing plug 132 is adapted to the discharge trough 813. When the first cylinder 131 is contracted, the end plate 9 moves toward the end face of the inner cylinder 3 until the sealing plug 132 is sealed and connected to the discharge trough 813. At this time, when the outer cylinder 4 is rotated by a certain angle, the outer sieve hole 512 and the inner sieve hole 511 are completely staggered, so that water overflow can be avoided when water is injected into the inner cylinder 3, and the raw material in the inner cylinder 3 can be cleaned in conjunction with the self-rotation of the inner cylinder 3.

[0043] like Figure 1-Figure 9 As shown, a two-way air pump 141 is provided on the base 1, one end of the air duct 811 passes through an end shaft 121 and extends to the inside of the inner tube 3, and the other end of the air duct 811 is sealed and rotatably connected to a fixed tube 142, and the fixed tube 142 is connected to the two-way air pump 141. A filtering mechanism is provided at the air inlet end of the two-way air pump 141, and the two-way air pump 141 is used to absorb light impurities in the inner tube 3 during filtering, and can be reversed when cleaning the material, and air can be blown into the inner tube 3 after cleaning, so as to quickly dry the material and the inner wall of the inner tube 3.

[0044] like Figure 1-Figure 9 As shown, the filtering mechanism includes a water tank 143, a rotating wheel 144 and a third motor 145. The water tank 143 is arranged on the base 1, and the fixed pipe 142 is inclined to the output end of the two-way air pump 141. The rotating wheel 144 is rotatably arranged on the inner wall of the fixed pipe 142 located at the two-way air pump 141. The rotating wheel 144 is driven to rotate by the third motor 145. The lower end of the fixed pipe 142 faces the inside of the water tank 143. Impurities in the fixed pipe 142 are sucked into the water tank 143 by the two-way air pump 141 and fall into the water tank 143 under the guidance of the rotating wheel 144, so that large particles of impurities are prevented from entering the inside of the two-way air pump 141. After the impurities come into contact with the water in the water tank 143, their own weight increases and they sink into the water.

[0045] like Figure 1-Figure 9 As shown, the central tube 715 is arranged inside the inner tube 3 through the fixing frame 151, the feed pipe 812 passes through an end shaft 121 and extends to the inside of the inner tube 3, and the nozzle 717 passes through the feed pipe 812 at one end away from the central tube 715 and extends outside to be connected with an external water source. Water can be injected into the inner tube 3 through the nozzle 717 for cleaning materials.

[0046] like Figure 1-Figure 9As shown, the guide arc 716 is arranged in an arc-shaped structure, and the center position of the guide arc 716 is hinged to the outer wall of the center tube 715 through the support bar 161, and a second cylinder 162 is arranged inside the center tube 715. A soft strip 163 is arranged at the output end of the second cylinder 162, and a telescopic shaft 164 is hinged on the outer wall of the center tube 715. The output end of the telescopic shaft 164 is hinged to the support bar 161, and one end of the soft strip 163 is assembled and connected with the output end of the telescopic shaft 164. A first spring 165 is arranged inside the telescopic shaft 164. When the second cylinder 162 is contracted, a part of the soft strip 163 can be pulled into the center tube 715, so that the telescopic shaft 164 is shortened, and the support bar 161 and the guide arc 716 are pulled to bend a certain angle, so as to avoid guiding the material to the discharge trough 813 through the guide arc 716 during the cleaning and stirring process, and the second cylinder 162 is extended, and the first spring 165 pushes the telescopic shaft 164 to extend and reset.

[0047] like Figure 1-Figure 9 As shown, an electromagnetic ring 171 is provided in the inner end 611 inside the assembly groove 711, and a limiting tooth 712 is provided at an inner end thereof with a magnetic block 172 which is mutually attracted to the electromagnetic ring 171. The limiting tooth 712 is assembled and connected to the assembly groove 711 through a second spring 173. A side frame 174 is provided on the base 1, and a second motor 714 is provided on the side frame 174. A gear ring is provided on the outer wall of the outer end 612, and an output end of the second motor 714 is meshed with the gear ring. The outer end 612 is driven to rotate by the second motor 714, and the outer cylinder 4 is driven to rotate. The electromagnetic ring 171 is electrically connected to an external power supply. When the outer cylinder 4 is rotated, magnetism can be generated by energizing the electromagnetic ring 171, and the magnet block 172 is mutually attracted. The magnet block 172 compresses the second spring 173 and shrinks in the assembly groove 711, thereby separating from the limiting groove 713, and rotation can occur between the inner end 611 and the outer end 612. Conversely, the power can be turned off after the rotation is completed.

[0048] Working principle: During pretreatment, the material to be screened is introduced into the inner cylinder 3 from the feed pipe 812, and the outer cylinder 4 is rotated according to the diameter of the material. After rotating for a certain angle, the outer sieve hole 512 and the inner sieve hole 511 have a certain overlap, and the holes that can pass through the outer sieve hole 512 and the inner sieve hole 511 are the hole lengths that need to be screened. The first motor 123 is driven to drive the inner cylinder 3 to rotate, so that the rotation of the material in the inner cylinder 3 can be realized, and the fine impurities directly pass through the outer sieve hole 512 and the inner sieve hole 511 and fall down. At the same time, the two-way air pump 141 is driven to suck the wind in the inner cylinder 3 outwards, and the impurities lighter than the material can be sucked away, leaving purer materials in the inner cylinder 3, and the materials are discharged to the left and right of the guide arc 716. The material is guided to the material trough 813 until it is discharged and the screening is completed. If the material needs to be cleaned, the outer cylinder 4 can be rotated first to leave no gap between the inner cylinder 3 and the outer cylinder 4, the material can be introduced from the feed pipe 812, and the end plate 9 on the end face of the inner cylinder 3 can be closed at the discharge trough 813 to prevent the liquid from overflowing, and then water can be injected into the inner cylinder 3 and the inner cylinder 3 can be rotated. The friction between the materials and the friction between the materials and the inner wall of the inner cylinder 3 can clean the surface of the materials. After cleaning, the outer cylinder 4 is rotated to make the inner sieve hole 511 connected with the outer sieve hole 512, the water can be discharged, and the material can be left in the inner cylinder 3, and the end plate 9 can be separated from the discharge trough 813. The inner cylinder 3 can be rotated continuously to guide the cleaned material out from the discharge trough 813, thereby realizing multi-functional operation.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A raw material pretreatment device for pig feed production, characterized in that: The invention comprises a base (1), a material holder (2), an inner cylinder (3) and an outer cylinder (4); the inner cylinder (3) is rotatably arranged on the inner wall of the outer cylinder (4); the two ends of the inner cylinder (3) are rotatably arranged above the base (1); the material holder (2) is located on the base (1) directly below the outer cylinder (4); the inner cylinder (3) and the outer cylinder (4) are tightly fitted and are respectively evenly provided with a plurality of inner sieve holes (511) and outer sieve holes (512); the inner sieve holes (511) and the outer sieve holes (512) have the same structure; the spacing between adjacent inner sieve holes (511) is greater than the length of the outer sieve holes (512); the inner cylinder (3) and the outer cylinder (4) are respectively provided with an inner end (611) and an outer end (612); one surface of the outer end (612) is evenly provided with a plurality of assembly grooves (711); the assembly grooves (711) are provided with a plurality of grooves (712); A limiting tooth (712) is provided in the matching groove (711) for magnetic attraction and sliding, a limiting groove (713) is provided on one side of the inner end (611) for meshing with the limiting tooth (712), the outer end (612) is driven to rotate by a second motor (714), a central tube (715) is provided at the center position inside the inner tube (3), a guide arc (716) is provided on the side wall of the central tube (715) for slidingly fitting with the inner wall of the inner tube (3), a nozzle (717) is provided on the central tube (715), an air duct (811) and a feed pipe (812) are respectively connected at both ends of the inner tube (3), a discharge groove (813) is provided at the edge of the end face of the inner tube (3) at the feed pipe (812), and an end plate (9) is provided on the end face of the inner tube (3) in a detachable and sealed manner.

2. A raw material pretreatment device for pig feed production according to claim 1, characterized in that: A slide bar (101) is provided on the inner side of the outer cylinder (4), and a slide groove (102) is provided on the outer side of the inner cylinder (3) and is slidably engaged with the slide bar (101).

3. A raw material pretreatment device for pig feed production according to claim 2, characterized in that: The material support (2) is arranged in an arc shape and has a diameter greater than the diameter of the outer cylinder (4); a discharge port (111) is provided at the center of the material support (2); and a guide plate (112) is provided below the material support (2) on one side below the discharge port (111).

4. A raw material pretreatment device for pig feed production according to claim 3, characterized in that: End shafts (121) are symmetrically arranged at both ends of the inner cylinder (3); the end shafts (121) are rotatably arranged on the base (1) via a bracket (122); a first motor (123) is arranged on the base (1); the end shafts (121) are driven to rotate by the first motor (123); and the air duct (811) and the feed pipe (812) are respectively arranged in the two end shafts (121).

5. A raw material pretreatment device for pig feed production according to claim 4, characterized in that: The end plate (9) is slidably sleeved on the outside of the end shaft (121), and the end face of the inner tube (3) is assembled and connected to the end plate (9) through a first cylinder (131). A sealing plug (132) is provided at an edge of one side of the end plate (9) close to the inner tube (3), and the sealing plug (132) is adapted to the discharge trough (813).

6. A raw material pretreatment device for pig feed production according to claim 5, characterized in that: A two-way air pump (141) is provided on the base (1); one end of the air duct (811) passes through one of the end shafts (121) and extends into the inner tube (3); the other end of the air duct (811) is sealed and rotatably connected to a fixed pipe (142); the fixed pipe (142) is connected to the two-way air pump (141); and a filtering mechanism is provided at the air inlet end of the two-way air pump (141).

7. A raw material pretreatment device for pig feed production according to claim 6, characterized in that: The filtering mechanism comprises a water tank (143), a rotating wheel (144) and a third motor (145); the water tank (143) is arranged on the base (1); the fixed pipe (142) and the output end of the two-way air pump (141) are arranged at an angle; the rotating wheel (144) is rotatably arranged on the inner wall of the fixed pipe (142) located at the two-way air pump (141); the rotating wheel (144) is driven to rotate by the third motor (145); and the lower end of the fixed pipe (142) faces the inside of the water tank (143).

8. A raw material pretreatment device for pig feed production according to claim 1, characterized in that: The central tube (715) is arranged inside the inner tube (3) via a fixing frame (151); the feed pipe (812) passes through one of the end shafts (121) and extends into the inner tube (3); and the nozzle (717) passes through the feed pipe (812) at one end away from the central tube (715) and extends outside to be connected with an external water source.

9. A raw material pretreatment device for pig feed production according to claim 8, characterized in that: The guide arc (716) is arranged in an arc-shaped structure. The center position of the guide arc (716) is hingedly connected to the outer wall of the center tube (715) through a support strip (161). A second cylinder (162) is arranged inside the center tube (715). A soft strip (163) is arranged at the output end of the second cylinder (162). A telescopic shaft (164) is hingedly arranged on the outer wall of the center tube (715). The output end of the telescopic shaft (164) is hingedly connected to the support strip (161). One end of the soft strip (163) is assembled and connected to the output end of the telescopic shaft (164). A first spring (165) is arranged inside the telescopic shaft (164).

10. A raw material pretreatment device for pig feed production according to claim 9, characterized in that: An electromagnetic ring (171) is provided in the inner end (611) of the assembly groove (711), and a magnetic block (172) is provided at one inner end of the limiting tooth (712) and is arranged to be attracted to the electromagnetic ring (171). The limiting tooth (712) is assembled and connected to the assembly groove (711) through a second spring (173). A side frame (174) is provided on the base (1), and the second motor (714) is arranged on the side frame (174). A gear ring is provided on the outer wall of the outer end (612), and the output end of the second motor (714) is meshed with the gear ring.

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