Probiotics, chitosan oligosaccharide and selenium-rich animal feed formula and preparation method thereof

Abstract

The invention belongs to the technical field of animal feeds, and particularly relates to a formula and a preparation method of a probiotic and chitosan oligosaccharide selenium-rich animal feed, and the animal feed formula comprises the following components: 43 parts of corn flour, 20 parts of bean cakes, 10 parts of wheat bran, 10 parts of bone meal, 5 parts of seasoning auxiliary materials, 3 parts of a probiotic preparation, 3 parts of chitosan oligosaccharide and 6 parts of a selenium source. The preparation method comprises the following specific steps: S1, preparing the raw materials required by the feed according to the parts of the feed formula; s2, the raw materials are put into a mixer according to the parts to be mixed, and clear water is added into the mixer during mixing, so that all the raw materials are uniformly mixed; in the step, the drying machine body, the feeding hopper, the conveying belt, the discharging plate, the air inlet pipe and the exhaust pipe are arranged to form an extrusion drying structure, the function of pre-extruding the raw materials is achieved, the situation that the drying speed of the raw materials is reduced due to the fact that the humidity of the raw materials is too high is solved, and the drying speed of the raw materials is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of animal feed, in particular to a probiotics, chitosan oligosaccharide and selenium-enriched animal feed formula and a preparation method thereof. Background Art

[0002] Animal feed is food provided to meet the daily growth, development, reproduction and health maintenance needs of animals. The nutritional requirements of animal feed include energy, protein, vitamins and minerals.

[0003] Types of animal feed include livestock feed and aquatic feed. Livestock feed is divided into roughage, concentrated feed and additives. Roughage is mainly composed of plant dietary fiber, and additives are used to increase specific nutrients or functional ingredients in the feed. Different types of animals have different requirements for nutrients. The production steps of feed include the purchase and storage of raw materials, crushing of the raw materials, adding probiotics and other additives to the crushed raw materials for fermentation, granulation, cooling and drying of the fermented feed, and finally packaging.

[0004] In the existing animal feed production technology, when drying the feed, the raw materials are put into the dryer and the feed is dried by hot air. The moisture content of the fermented feed is high, which leads to a slow drying speed, thus affecting the production speed of the feed.

[0005] To this end, the present invention provides a probiotic, chitosan oligosaccharide, selenium-enriched animal feed formula and a preparation method thereof. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a probiotic, chitosan oligosaccharide, and selenium-rich animal feed formula described in the present invention, the animal feed formula is as follows: 43 parts of corn flour, 20 parts of bean cake, 10 parts of wheat bran, 10 parts of bone meal, 5 parts of seasoning auxiliary materials, 3 parts of probiotic preparations, 3 parts of chitosan oligosaccharides, and 6 parts of selenium sources.

[0008] Preferably, a method for preparing animal feed containing probiotics, chitosan oligosaccharides and selenium-enriched elements comprises the following specific steps: S1, preparing the raw materials required for the feed according to the number of portions of the feed formula; S2, putting the raw materials into a mixer according to the number of portions for mixing, and adding clean water into the mixer during mixing to facilitate uniform mixing of the raw materials; S3, putting the mixed feed mixture into a drying device for drying, and after the water in the mixture is dried to a specified water content, putting the mixture into a granulator and pressing it into granules; S4, using a rolling drying device to reduce the moisture content of the granulated feed to extend the shelf life of the feed, and the cooled feed is packaged and packed.

[0009] Preferably, the drying equipment described above includes a dryer body; a feed hopper is fixedly connected to the top of the dryer body; a conveyor belt is arranged inside the dryer body; a discharge plate is fixedly connected to the side wall of the dryer body away from the feed hopper; the end of the discharge plate is in contact with the outer wall of the conveyor belt; an extrusion assembly is arranged inside the feed hopper; a material shifting assembly is arranged in the middle of the dryer body; a flat material assembly is arranged on the top of the dryer body; an air inlet pipe is fixedly connected to the bottom of the inner wall of the dryer body; multiple groups of air inlet pipes are arranged at the bottom of the inner wall of the dryer body, and are evenly distributed at the bottom of the inner wall of the dryer body; an exhaust pipe is fixedly connected to the top of the dryer body; this step forms an extrusion drying structure through the arrangement of the dryer body, the feed hopper, the conveyor belt, the discharge plate, the air inlet pipe and the exhaust pipe, realizes the function of pre-extruding the raw materials, solves the problem that the drying speed of the raw materials is reduced due to excessive humidity of the raw materials, and improves the drying speed of the raw materials.

[0010] Preferably, the extrusion assembly includes a first electric push rod, a push plate, a second electric push rod, a sealing plate, and a filter plate; the first electric push rod is fixedly connected to the side wall of the feed hopper; a pair of the first electric push rods are arranged on the side wall of the feed hopper and are symmetrically arranged; the side wall of the push plate is fixedly connected to the transmission end of the first electric push rod; the push plate slides in the middle of the feed hopper; the second electric push rod is fixedly connected to the top of the dryer body; a pair of the second electric push rods are arranged on the top of the dryer body and are symmetrically arranged; the sealing plate slides inside the feed hopper; the side wall of the sealing plate is fixedly connected to the transmission end of the second electric push rod; the filter plate is fixedly connected to the middle of the feed hopper away from the first electric push rod; a material blocking assembly is provided on the top of the push plate; the push plate slides on the top of the sealing plate; this step constitutes a raw material extrusion structure through the arrangement of the first electric push rod, the push plate, the second electric push rod, the sealing plate and the filter plate, realizes the function of extruding the raw material, solves the problem of high moisture content in the raw material, reduces the moisture content of the raw material when entering the dryer body, and improves the drying speed of the raw material.

[0011] Preferably, the material-shifting assembly comprises a servo motor, a rotating shaft, a rotating plate, a rotating disk, a stirring rod and a gear ring; the servo motor is fixedly connected to the top of the dryer body; the end of the rotating shaft is fixedly connected to the transmission end of the servo motor; the top of the rotating plate is fixedly connected to the bottom of the rotating shaft; the rotating disk is rotatably connected to the bottom of the rotating plate; a pair of rotating disks are arranged at the bottom of the rotating plate and are symmetrically arranged; the stirring rod is fixedly connected to the bottom of the rotating disk; multiple groups of stirring rods are arranged at the bottom of the rotating disk and are evenly distributed at the bottom of the rotating disk; the gear ring is fixedly connected to the inner wall of the dryer body; the rotating disk is meshed with the gear ring; this step forms a material-shifting structure through the arrangement of the servo motor, the rotating shaft, the rotating plate, the rotating disk, the stirring rod and the gear ring, thereby realizing the function of shifting the extruded raw materials, solving the problem of raw materials clumping or piling up on the top of the conveyor belt, improving the uniformity of raw material dispersion on the top of the conveyor belt, and improving the speed of raw material drying.

[0012] Preferably, the flat material assembly includes a screw rod, a fixed plate and a scraper plate; the screw rod is threadedly connected to the top of the dryer body; the screw rod is arranged in a pair at the top of the dryer body and is symmetrically arranged; the top of the fixed plate is fixedly connected to the bottom end of the screw rod close to the conveyor belt; the scraper plate is fixedly connected to the bottom of the fixed plate; this step forms a flat material structure through the arrangement of the screw rod, the fixed plate and the scraper plate, realizes the function of leveling the raw materials on the top of the conveyor belt, solves the problem of raw materials piling up on the top of the conveyor belt, improves the uniformity of dispersion of raw materials on the top of the conveyor belt, and reduces the situation of slow drying speed caused by the accumulation of raw materials on the top of the conveyor belt.

[0013] Preferably, the material blocking assembly includes a spring and a limit plate; the spring is fixedly connected to the top of the push plate; the spring is arranged in multiple groups on the top of the push plate and is evenly distributed on the top of the push plate; the bottom of the limit plate is fixedly connected to the end of the spring; the limit plate is slidably connected to the push plate; this step forms a material blocking structure through the arrangement of the spring and the limit plate, realizes the function of limiting the raw material when the push plate extrude the raw material, solves the problem of the raw material moving upward when the raw material is extruded, and improves the quality of raw material extrusion.

[0014] Preferably, the sealing plate is fixedly connected to a collecting box on the side wall away from the first electric push rod; the collecting box is fixedly connected to a drain port on the side wall away from the feed hopper; in this step, the moisture squeezed out of the raw material is collected and discharged through the setting of the collecting box and the drain port, thereby improving the convenience of collection.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The probiotics, chitosan oligosaccharide, and selenium-enriched animal feed formula and preparation method thereof described in the present invention, through the arrangement of a dryer body, a feed hopper, a conveyor belt, a discharge plate, an air inlet pipe, and an exhaust pipe, constitute an extrusion drying structure, realize the function of pre-extrusion of raw materials, solve the problem that the drying speed of raw materials is reduced due to excessive humidity of the raw materials, and improve the drying speed of the raw materials.

[0017] 2. The present invention discloses a probiotic, chitosan oligosaccharide, selenium-rich animal feed formula and a preparation method thereof. A raw material extrusion structure is formed by setting a first electric push rod, a push plate, a second electric push rod, a sealing plate and a filter plate, thereby realizing the function of extruding the raw materials, solving the problem of high moisture content in the raw materials, reducing the moisture content of the raw materials when entering the dryer body, and increasing the drying speed of the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 is a flow chart of the preparation method of the present invention;

[0020] Figure 2 It is a stereogram in the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the scraper plate and the conveyor belt in the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the push plate and the sealing plate in the present invention;

[0023] Figure 5 It is a schematic structural diagram of the cooperation between the limit plate and the push plate in the present invention.

[0024] In the figure: 1. dryer body; 11. feed hopper; 12. conveyor belt; 13. discharge plate; 2. first electric push rod; 21. push plate; 22. second electric push rod; 23. sealing plate; 24. filter plate; 3. servo motor; 31. rotating shaft; 32. rotating plate; 33. turntable; 34. stirring rod; 35. gear ring; 4. screw rod; 41. fixed plate; 42. scraper plate; 5. spring; 51. limit plate; 6. air inlet pipe; 61. exhaust pipe; 7. collection box; 71. drain port. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] A probiotic, chitosan oligosaccharide, and selenium-rich animal feed formula according to an embodiment of the present invention is as follows: 43 parts of corn flour, 20 parts of bean cake, 10 parts of wheat bran, 10 parts of bone meal, 5 parts of seasoning auxiliary materials, 3 parts of probiotic preparations, 3 parts of chitosan oligosaccharides, and 6 parts of selenium sources.

[0027] like Figure 1 As shown, a method for preparing animal feed containing probiotics, chitosan oligosaccharides and selenium-enriched elements, the preparation method specifically comprises the following steps: S1, preparing the raw materials required for the feed according to the number of portions of the feed formula; S2, putting the raw materials into a mixer according to the number of portions for mixing, and adding clean water into the mixer during mixing to facilitate uniform mixing of the raw materials; S3, putting the mixed feed mixture into a drying device for drying, and after the water in the mixture is dried to a specified water content, putting the mixture into a granulator and pressing it into granules; S4, using a rolling drying device to reduce the moisture content of the granulated feed to extend the shelf life of the feed, and the cooled feed is packaged and packed.

[0028] like Figures 2 to 5 As shown, the drying equipment mentioned above includes a dryer body 1; a feed hopper 11 is fixedly connected to the top of the dryer body 1; a conveyor belt 12 is arranged inside the dryer body 1; a discharge plate 13 is fixedly connected to the side wall of the dryer body 1 away from the feed hopper 11; the end of the discharge plate 13 contacts the outer side wall of the conveyor belt 12; an extrusion component is arranged inside the feed hopper 11; a material shifting component is arranged in the middle of the dryer body 1; a flat material component is arranged on the top of the dryer body 1; an air inlet pipe 6 is fixedly connected to the bottom of the inner side wall of the dryer body 1; multiple groups of air inlet pipes 6 are arranged at the bottom of the inner side wall of the dryer body 1, and are evenly distributed at the bottom of the inner side wall of the dryer body 1; an exhaust pipe 61 is fixedly connected to the top of the dryer body 1; during operation, the mixed The raw materials are put into the dryer body 1 through the feed hopper 11, and the raw materials are squeezed by the extrusion component in the feed hopper 11, and the excess water is squeezed out. The extruded raw materials fall onto the conveyor belt 12, and the material shifting component scatters the extruded raw materials. The air inlet pipe 6 passes high-temperature gas to dry the raw materials on the top of the conveyor belt 12. The processed raw materials are transferred to the other end through the conveyor belt 12 and discharged through the discharge plate 13. In this step, the extrusion drying structure is formed by the arrangement of the dryer body 1, the feed hopper 11, the conveyor belt 12, the discharge plate 13, the air inlet pipe 6 and the exhaust pipe 61, so as to realize the function of pre-extrusion of the raw materials, solve the problem that the drying speed of the raw materials is reduced due to excessive humidity of the raw materials, and improve the drying speed of the raw materials.

[0029] like Figure 4As shown, the extrusion assembly includes a first electric push rod 2, a push plate 21, a second electric push rod 22, a sealing plate 23, and a filter plate 24; the first electric push rod 2 is fixedly connected to the side wall of the feed hopper 11; a pair of the first electric push rod 2 is arranged on the side wall of the feed hopper 11, and they are symmetrically arranged; the side wall of the push plate 21 is fixedly connected to the transmission end of the first electric push rod 2; the push plate 21 slides in the middle of the feed hopper 11; the second electric push rod 22 is fixedly connected to the top of the dryer body 1; a pair of the second electric push rod 22 is arranged on the top of the dryer body 1, and they are symmetrically arranged; the sealing plate 23 slides inside the feed hopper 11; the side wall of the sealing plate 23 is fixedly connected to the transmission end of the second electric push rod 22; the filter plate 24 is fixedly connected to the middle of the feed hopper 11 away from the first electric push rod 2; a material blocking assembly is provided on the top of the push plate 21; the push plate 21 slides on the top of the sealing plate 23; during operation, the raw materials are put into the feed hopper The raw material falls on the top of the sealing plate 23 in the hopper 11, and the first electric push rod 2 is started. The first electric push rod 2 drives the push plate 21 to squeeze the raw material, and the excess water is discharged through the filter plate 24. The second electric push rod 22 is started, and the second electric push rod 22 drives the sealing plate 23 to move, so that the sealing plate 23 slides inside the feed hopper 11, and the opening at the bottom of the feed hopper 11 is opened. The squeezed raw material falls on the top of the conveyor belt 12, and the first electric push rod 2 and the second electric push rod 22 are started again to reset the push plate 21 and the sealing plate 23; this step constitutes a raw material squeezing structure through the arrangement of the first electric push rod 2, the push plate 21, the second electric push rod 22, the sealing plate 23 and the filter plate 24, realizes the function of squeezing the raw material, solves the problem of high moisture content in the raw material, reduces the moisture content of the raw material when it enters the inside of the dryer body 1, and increases the speed of raw material drying.

[0030] like Figure 3As shown, the material-dispensing assembly includes a servo motor 3, a rotating shaft 31, a rotating plate 32, a rotating disk 33, a stirring rod 34 and a gear ring 35; the servo motor 3 is fixedly connected to the top of the dryer body 1; the end of the rotating shaft 31 is fixedly connected to the transmission end of the servo motor 3; the top of the rotating plate 32 is fixedly connected to the bottom of the rotating shaft 31; the rotating disk 33 is rotatably connected to the bottom of the rotating plate 32; a pair of rotating disks 33 are arranged at the bottom of the rotating plate 32, and are symmetrically arranged; the stirring rod 34 is fixedly connected to the bottom of the rotating disk 33; a plurality of stirring rods 34 are arranged at the bottom of the rotating disk 33, and are evenly distributed at the bottom of the rotating disk 33; the gear ring 35 is fixedly connected to the inner wall of the dryer body 1; the rotating disk 33 is meshed with the gear ring 35; during operation, the extruded The raw material falls onto the top of the conveyor belt 12, and the servo motor 3 is started. The servo motor 3 drives the rotating shaft 31, the rotating plate 32 and the turntable 33 to rotate. The turntable 33 engages with the gear ring 35 to make the turntable 33 rotate on its own. The stirring rod 34 stirs the raw material on the top of the conveyor belt 12 to scatter the extruded raw material so that it is evenly spread on the top of the conveyor belt 12. This step forms a material-scattering structure through the arrangement of the servo motor 3, the rotating shaft 31, the rotating plate 32, the turntable 33, the stirring rod 34 and the gear ring 35, which realizes the function of scattering the extruded raw material, solves the problem of the raw material clumping or piling up on the top of the conveyor belt 12, improves the uniformity of the dispersion of the raw material on the top of the conveyor belt 12, and increases the speed of drying the raw material.

[0031] like Figure 3 As shown, the flat material assembly includes a screw rod 4, a fixed plate 41 and a scraper plate 42; the screw rod 4 is threadedly connected to the top of the dryer body 1; a pair of screw rods 4 are arranged at the top of the dryer body 1, and are symmetrically arranged; the top of the fixed plate 41 is fixedly connected to the bottom end of the screw rod 4 close to the conveyor belt 12; the scraper plate 42 is fixedly connected to the bottom of the fixed plate 41; during operation, the screw rod 4 is twisted, and the screw rod 4 drives the fixed plate 41 and the scraper plate 42 to approach the conveyor belt 12, and the distance between the scraper plate 42 and the conveyor belt 12 is adjusted. The raw materials on the top of the conveyor belt 12 are blocked by the scraper plate 42, so that the raw materials are evenly distributed on the top of the conveyor belt 12; this step forms a flat material structure through the arrangement of the screw rod 4, the fixed plate 41 and the scraper plate 42, realizes the function of leveling the raw materials on the top of the conveyor belt 12, solves the problem of raw materials piling up on the top of the conveyor belt 12, improves the uniformity of raw materials dispersion on the top of the conveyor belt 12, and reduces the situation where raw materials accumulate on the top of the conveyor belt 12 and cause slow drying speed.

[0032] like Figure 5As shown, the material blocking assembly includes a spring 5 and a limit plate 51; the spring 5 is fixedly connected to the top of the push plate 21; multiple groups of springs 5 ​​are arranged at the top of the push plate 21, and are evenly distributed on the top of the push plate 21; the bottom of the limit plate 51 is fixedly connected to the end of the spring 5; the limit plate 51 is slidably connected to the push plate 21; during operation, when the push plate 21 extrudes the raw material, the limit plate 51 presses the raw material to the bottom of the limit plate 51, and limits the raw material to the bottom of the limit plate 51, and when the limit plate 51 contacts the side wall of the feed hopper 11, the spring 5 is stretched, and when the push plate 21 is reset, the spring 5 drives the limit plate 51 to reset; this step forms a material blocking structure through the arrangement of the spring 5 and the limit plate 51, realizes the function of limiting the raw material when the push plate 21 extrudes the raw material, solves the problem that the raw material moves upward when the raw material is extruded, and improves the quality of raw material extrusion.

[0033] like Figure 4 As shown, the side wall of the sealing plate 23 away from the first electric push rod 2 is fixedly connected to a collecting box 7; the side wall of the collecting box 7 away from the feed hopper 11 is fixedly connected to a drain port 71; during operation, after the push plate 21 squeezes the raw material, the moisture in the raw material is squeezed out, discharged from the filter plate 24, collected by the collecting box 7, and discharged through the drain port 71; this step collects and discharges the moisture squeezed out of the raw material through the setting of the collecting box 7 and the drain port 71, thereby improving the convenience of collection.

[0034] During operation, the mixed raw materials are put into the dryer body 1 through the feed hopper 11, the raw materials are squeezed by the squeezing assembly in the feed hopper 11, and the excess water is squeezed out. The extruded raw materials fall onto the conveyor belt 12, and the material shifting assembly scatters the extruded raw materials. The air inlet pipe 6 passes high-temperature gas to dry the raw materials on the top of the conveyor belt 12. The processed raw materials are conveyed to the other end through the conveyor belt 12 and discharged through the discharge plate 13; the raw materials are put into the feed hopper 11 and fall on the top of the sealing plate 23, the first electric push rod 2 is started, the first electric push rod 2 drives the push plate 21 to squeeze the raw materials, and the excess water is discharged through the filter plate 24, the second electric push rod 22 is started, the second electric push rod 22 drives the sealing plate 23 to move, so that the sealing plate 23 slides inside the feed hopper 11, and the opening at the bottom of the feed hopper 11 is opened, and the extruded raw materials fall onto the top of the conveyor belt 12, and the first electric push rod 2 and the second electric push rod 22 are started again to reset the push plate 21 and the sealing plate 23; the extruded raw materials fall onto the conveyor belt 12 At the top, start the servo motor 3, the servo motor 3 drives the rotating shaft 31, the rotating plate 32 and the rotating disk 33 to rotate, the rotating disk 33 meshes with the gear ring 35, so that the rotating disk 33 rotates, and the stirring rod 34 stirs the raw materials on the top of the conveyor belt 12 to spread the extruded raw materials and spread them evenly on the top of the conveyor belt 12; twist the screw rod 4, the screw rod 4 drives the fixed plate 41 and the scraper plate 42 to approach the conveyor belt 12, adjust the distance between the scraper plate 42 and the conveyor belt 12, and the top of the conveyor belt 12 The raw material is blocked by the scraper plate 42, so that the raw material is evenly distributed on the top of the conveyor belt 12; when the push plate 21 squeezes the raw material, the limit plate 51 presses the raw material to the bottom of the limit plate 51, and the raw material is limited to the bottom of the limit plate 51. When the limit plate 51 contacts the side wall of the feed hopper 11, the spring 5 is stretched, and when the push plate 21 is reset, the spring 5 drives the limit plate 51 to reset; after the push plate 21 squeezes the raw material, the moisture in the raw material is squeezed out, discharged from the filter plate 24, collected by the collecting box 7, and discharged through the drain port 71.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A probiotic, chitosan oligosaccharide, selenium-enriched animal feed formula, characterized in that: The animal feed formula is as follows:

2. A method for preparing animal feed containing probiotics, chitosan oligosaccharides and selenium-enriched elements, characterized in that: The specific steps of the preparation method include: S1. Prepare the raw materials required for the feed according to the number of portions of the feed formula; S2, putting the raw materials into a mixer according to the number of portions for mixing, and adding clean water into the mixer during mixing to facilitate uniform mixing of the raw materials; S3, the mixed feed mixture is put into a drying device for drying, and after the water in the mixture is dried to a specified water content, the mixture is put into a granulator and pressed into granules; S4. The pelletized feed is dried using a rolling drying device to reduce moisture and extend the shelf life of the feed. The cooled feed is packaged and packed.

3. The method for preparing a probiotic, chitosan oligosaccharide and selenium-enriched animal feed according to claim 2, characterized in that: The drying device described in S3 comprises a dryer body (1); a feed hopper (11) is fixedly connected to the top of the dryer body (1); a conveyor belt (12) is provided inside the dryer body (1); a discharge plate (13) is fixedly connected to the side wall of the dryer body (1) away from the feed hopper (11); the end of the discharge plate (13) contacts the outer wall of the conveyor belt (12); an extrusion assembly is provided inside the feed hopper (11); a material shifting assembly is provided in the middle of the dryer body (1); a flat material assembly is provided at the top of the dryer body (1); an air inlet pipe (6) is fixedly connected to the bottom of the inner wall of the dryer body (1); a plurality of air inlet pipes (6) are arranged at the bottom of the inner wall of the dryer body (1) and are evenly distributed at the bottom of the inner wall of the dryer body (1); an exhaust pipe (61) is fixedly connected to the top of the dryer body (1).

4. The method for preparing a probiotic, chitosan oligosaccharide and selenium-enriched animal feed according to claim 3, characterized in that: The extrusion assembly comprises a first electric push rod (2), a push plate (21), a second electric push rod (22), a sealing plate (23), and a filter plate (24); the first electric push rod (2) is fixedly connected to the side wall of the feed hopper (11); a pair of the first electric push rods (2) are arranged on the side wall of the feed hopper (11), and are symmetrically arranged; the side wall of the push plate (21) is fixedly connected to the transmission end of the first electric push rod (2); the push plate (21) slides in the middle of the feed hopper (11); the second electric push rod (22) is fixedly connected At the top of the dryer body (1); a pair of the second electric push rods (22) are arranged at the top of the dryer body (1) and are symmetrically arranged; the sealing plate (23) slides inside the feed hopper (11); the side wall of the sealing plate (23) is fixedly connected to the transmission end of the second electric push rod (22); the filter plate (24) is fixedly connected to the middle part of the feed hopper (11) away from the first electric push rod (2); a material blocking assembly is provided on the top of the push plate (21); the push plate (21) slides on the top of the sealing plate (23).

5. The method for preparing a probiotic, chitosan oligosaccharide and selenium-enriched animal feed according to claim 3, characterized in that: The material shifting assembly comprises a servo motor (3), a rotating shaft (31), a rotating plate (32), a rotating disk (33), a stirring rod (34) and a gear ring (35); the servo motor (3) is fixedly connected to the top of the dryer body (1); the end of the rotating shaft (31) is fixedly connected to the transmission end of the servo motor (3); the top of the rotating plate (32) is fixedly connected to the bottom of the rotating shaft (31); the rotating disk (33) is rotatably connected to the bottom of the rotating plate (32); a pair of rotating disks (33) are arranged at the bottom of the rotating plate (32) and are symmetrically arranged; the stirring rod (34) is fixedly connected to the bottom of the rotating disk (33); a plurality of stirring rods (34) are arranged at the bottom of the rotating disk (33) and are evenly distributed at the bottom of the rotating disk (33); the gear ring (35) is fixedly connected to the inner side wall of the dryer body (1); the rotating disk (33) is meshed with the gear ring (35).

6. The method for preparing a probiotic, chitosan oligosaccharide, and selenium-enriched animal feed according to claim 3, characterized in that: The flat material assembly comprises a screw rod (4), a fixed plate (41) and a scraper plate (42); the screw rod (4) is threadedly connected to the top of the dryer body (1); a pair of screw rods (4) are arranged on the top of the dryer body (1) and are symmetrically arranged; the top of the fixed plate (41) is fixedly connected to the bottom end of the screw rod (4) close to the conveyor belt (12); and the scraper plate (42) is fixedly connected to the bottom of the fixed plate (41).

7. The method for preparing a probiotic, chitosan oligosaccharide, and selenium-enriched animal feed according to claim 4, characterized in that: The material blocking assembly comprises a spring (5) and a limit plate (51); the spring (5) is fixedly connected to the top of the push plate (21); a plurality of groups of springs (5) are arranged on the top of the push plate (21) and are evenly distributed on the top of the push plate (21); the bottom of the limit plate (51) is fixedly connected to the end of the spring (5); the limit plate (51) is slidably connected to the push plate (21).

8. The method for preparing a probiotic, chitosan oligosaccharide, and selenium-enriched animal feed according to claim 4, characterized in that: A collecting box (7) is fixedly connected to the side wall of the sealing plate (23) away from the first electric push rod (2); and a liquid discharge port (71) is fixedly connected to the side wall of the collecting box (7) away from the feed hopper (11).

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