CN112090509B - Pretreatment process for raw materials for preparing pig feed - Google Patents
Pretreatment process for raw materials for preparing pig feed Download PDFInfo
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- CN112090509B CN112090509B CN202010941670.9A CN202010941670A CN112090509B CN 112090509 B CN112090509 B CN 112090509B CN 202010941670 A CN202010941670 A CN 202010941670A CN 112090509 B CN112090509 B CN 112090509B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/13—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft and combined with sifting devices, e.g. for making powdered fuel
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N17/00—Apparatus specially adapted for preparing animal feeding-stuffs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- Engineering & Computer Science (AREA)
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Abstract
The invention provides a pig feed preparation raw material pretreatment process which adopts a pig feed preparation raw material pretreatment processing device, wherein the pig feed preparation raw material pretreatment processing device comprises a processing shell, a crushing unit and a screening unit, round chutes are symmetrically arranged on the left and right sides above the middle part of the inner wall of the processing shell, the crushing unit is arranged in the round chutes in a sliding manner, and the screening unit is arranged on the inner wall below the middle part of the processing shell; the invention can solve the problems that when a common feed raw material preparation device is used for processing pig feed, most of the feed raw materials are firstly crushed by a double-roller crusher and then granulated, so that raw material powder is easy to adhere to the crushing pieces, the raw material powder needs to be cleaned frequently, and unnecessary workload is increased; when screening feed ingredient, what most adopted is the vibrations screening, can't effectually get rid of the impurity in the fodder completely, consequently can't guarantee that the fodder that the processing was accomplished accords with operation requirement "scheduling problem.
Description
Technical Field
The invention relates to the technical field of pig feed processing and manufacturing, in particular to a pretreatment process for raw materials for pig feed preparation.
Background
In the process of breeding pigs, pig feed is very important; pig feed is typically a feed for domestic pigs consisting of protein feed, energy feed, roughage, greenfeed, silage, mineral feed and feed additives. The energy feed comprises corn, barley and rice, the protein feed comprises plant and animal protein feed, rapeseed cakes in plant protein, the mineral feed mainly meets the requirement of the pig on minerals such as calcium, phosphorus and the like, the green feed can improve the palatability of the pig, and the coarse feed comprises hay and crop straws; the preparation raw materials of the primarily selected feed need to be screened, and impurities in the preparation raw materials are removed, so that the feed preparation raw materials meeting the requirements are obtained.
However, the following problems exist when the pig feed raw materials are processed and manufactured at present: when a common feed raw material preparation device is used for processing pig feed, most of the feed raw materials are firstly crushed by a double-roller crusher and then granulated, so that raw material powder is easy to adhere to crushing pieces, the raw material powder needs to be cleaned frequently, and unnecessary workload is increased; and when screening feed raw materials, the vibration screening is mostly adopted, so that impurities in the feed cannot be effectively and completely removed, and the processed feed cannot meet the use requirement.
Disclosure of Invention
In order to solve the problems, the invention provides a pig feed preparation raw material pretreatment process, which adopts a pig feed preparation raw material pretreatment processing device, wherein the pig feed preparation raw material pretreatment processing device comprises a processing shell, a crushing unit and a screening unit, round chutes are symmetrically arranged on the left and right sides above the middle part of the inner wall of the processing shell, the crushing unit is arranged in the round chutes in a sliding manner, and the screening unit is arranged on the inner wall below the middle part of the processing shell, wherein:
processing shell inner wall middle part top bilateral symmetry has seted up circular spout, and the feed inlet has been seted up to circular spout left end, and the linkage groove has been seted up to processing shell right-hand member top, and processing shell middle part inner wall bilateral symmetry has seted up square spout, and the square spout upper end department in right side has seted up the removal spout, and has seted up No. one the discharge gate in processing shell middle part below left side, and processing shell middle part below right side sets up No. two the discharge gates.
The crushing unit comprises a transmission motor, a universal driving shaft, a crushing barrel, a crushing paddle, a poking tooth, a rotating shaft and a transmission gear, wherein: the transmission motor is arranged on the outer wall of the right end of the processing shell through a motor base, the output shaft of the transmission motor is connected with a linkage shaft through a spline, the other end of the universal driving shaft is arranged on the inner wall of the left end of the processing shell through a bearing, the crushing barrel is sleeved on the outer wall of the universal driving shaft through the bearing, the crushing paddles are uniformly and circumferentially arranged along the universal driving shaft from left to right, the material shifting teeth are uniformly and circumferentially arranged along the inner wall of the crushing barrel, the rotating shaft is slidably arranged in the universal driving groove, the transmission gear is sleeved on the outer wall of the rotating shaft through a flange structure, the rotating shaft is connected with the universal driving shaft through belt transmission, the crushing barrel is sleeved on the outer wall of the middle part of the universal driving shaft through a bearing, and the crushing cylinder is arranged in the circular chute in a sliding manner, the outer wall of the right end of the crushing cylinder is circumferentially and uniformly provided with executing gear teeth meshed with the transmission gear, the left end of the crushing cylinder is provided with an annular hole matched with the feed inlet, and blanking holes are circumferentially and uniformly formed along the crushing cylinder from left to right.
Screening unit includes blanking plate, location cylinder, limiting plate, telescopic spring pole, bracing piece, supplementary piece and ejection of compact branch chain, wherein: blanking plate slides and sets up in square spout, the circular port has evenly been seted up along blanking plate upper end, the telescopic spring pole sets up in blanking plate right side upper end, the telescopic spring pole other end slides and sets up in removing the spout, the location cylinder sets up on processing shell left end outer wall, location cylinder telescopic link end is connected with the limiting plate through the bearing, the limiting plate lower extreme is connected in blanking plate left side upper end, evenly be provided with the bracing piece after going from the front along square spout right side lower extreme inner wall, blanking plate right side lower extreme is installed and is equipped with bracing piece sliding connection's auxiliary block, ejection of compact branch chain sets up on processing shell lower extreme inner wall.
The pig feed raw material preparation processing device comprises the following steps:
s1, starting device: putting the feed raw materials to be processed into the device, and starting the device;
s2, crushing the raw materials: the device crushing unit 2 crushes the feed raw materials into powder;
s3, electromagnetic screening: electromagnetically screening the raw material powder in the S2 through a screening unit 3 to remove impurities in the raw material;
s4, discharging: discharging the raw materials and impurities screened in the S3 to the outside of the device through a first discharge port 16 and a second discharge port 17 respectively.
As a preferred technical scheme of the invention, the discharging branch chain comprises a pushing cylinder, a telescopic baffle plate and a supporting plate, wherein: the promotion cylinder bilateral symmetry sets up on processing shell lower extreme inner wall, and the terminal articulated retractable baffle that has of promotion cylinder telescopic link, retractable baffle sliding connection on processing shell inner wall, and the backup pad bilateral symmetry sets up on processing shell inner wall below discharge gate and No. two discharge gates.
As a preferred technical scheme of the invention, the right end of the processing shell is of an L-shaped structure, and the linkage groove is formed in the upper portion of the right end of the processing shell.
As a preferred technical solution of the present invention, the auxiliary block is a triangular structure block for reciprocating the blanking plate up and down, and a lower end of the auxiliary block is slidably connected to an upper end of the support rod.
As a preferable technical scheme of the invention, a fixed cavity is formed in the material shifting tooth, and a first electromagnetic block for adsorbing impurities is arranged in the fixed cavity.
As a preferable technical scheme of the invention, a second electromagnetic block for adsorbing impurities is symmetrically arranged in the blanking plate along the left and right of the circular hole.
The invention has the beneficial effects that:
the invention greatly improves the processing and manufacturing of pig feed raw materials, and can solve the problems that when a common feed raw material preparation device is used for processing pig feed, most of the feed raw materials are firstly crushed by a double-roller crusher and then granulated, so that raw material powder is easy to adhere to a crushing sheet and needs to be cleaned frequently, and unnecessary workload is increased; and when screening feed raw materials, the vibration screening is mostly adopted, so that impurities in the feed cannot be effectively and completely removed, and the problem that the processed feed meets the use requirement cannot be solved.
The feed stirring and crushing device is provided with the crushing unit, the crushing paddle is matched with the material shifting teeth and the first electromagnetic block to stir and crush feed raw materials, and impurities in the feed raw materials can be adsorbed on the material shifting teeth, so that the purity of the feed raw materials is guaranteed.
And thirdly, the screening unit is additionally arranged, the crushed feed raw materials are subjected to reciprocating screening treatment by adopting a blanking plate, a support rod and an auxiliary block, and the circular hole in the blanking plate is matched with the second electromagnetic block to secondarily adsorb impurities remained in the feed raw materials, so that the manufactured feed raw materials are ensured to meet the use requirements.
And fourthly, the discharging branch chain is adopted, so that the prepared feed raw materials and impurities can be discharged to the outside of the device through the first discharging port and the second discharging port respectively.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the present invention.
Fig. 2 is a front sectional view of the present invention.
FIG. 3 is a schematic three-dimensional structure of the universal driving shaft, the crushing barrel, the crushing paddle and the material shifting teeth.
Fig. 4 is a sectional view taken along line a-a of fig. 2 of the present invention.
Fig. 5 is a sectional view taken along line B-B of fig. 2 of the present invention.
Fig. 6 is a partial enlarged view of the present invention at C of fig. 2.
Fig. 7 is a partial enlarged view of the invention at D of fig. 2.
FIG. 8 is an enlarged view of the invention at E of FIG. 5
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1 to 8, the invention provides a pig feed preparation raw material pretreatment process, which adopts a pig feed preparation raw material pretreatment processing device, wherein the pig feed preparation raw material pretreatment processing device comprises a processing shell 1, a crushing unit 2 and a screening unit 3, round chutes 11 are symmetrically arranged on the upper left and right sides of the middle part of the inner wall of the processing shell 1, the crushing unit 2 is arranged in the round chutes 11 in a sliding manner, and the screening unit 3 is arranged on the inner wall of the lower middle part of the processing shell 1, wherein:
a circular chute 11 is symmetrically arranged above the middle part of the inner wall of the processing shell 1 in a left-right mode, a feeding hole 12 is arranged at the left end of the circular chute 11, a linkage groove 13 is arranged above the right end of the processing shell 1, the right end of the processing shell 1 is of an L-shaped structure, and the linkage groove 13 is arranged inside the upper part of the right end of the processing shell 1; processing shell 1 middle part inner wall bilateral symmetry has seted up square spout 14, and the square spout 14 upper end department in right side has seted up removal spout 15, and has seted up discharge gate 16 in the middle part below left side of processing shell 1, and No. two discharge gates 17 are seted up in the middle part below right side of processing shell 1.
The crushing unit 2 comprises a transmission motor 21, a linkage shaft 22, a crushing barrel 23, a crushing paddle 24, a material shifting tooth 25, a rotating shaft 26 and a transmission gear 27, wherein: the transmission motor 21 is installed on the outer wall of the right end of the processing shell 1 through a motor base, an output shaft of the transmission motor 21 is connected with a linkage shaft 22 through a spline, the other end of the linkage shaft 22 is arranged on the inner wall of the left end of the processing shell 1 through a bearing, the crushing barrel 23 is sleeved on the outer wall of the linkage shaft 22 through a bearing, crushing paddles 24 are uniformly arranged along the circumferential direction of the linkage shaft 22 from left to right, material shifting teeth 25 are uniformly arranged along the circumferential direction of the inner wall of the crushing barrel 23, a fixed cavity 251 is formed in each material shifting tooth 25, and a first electromagnetic block 252 used for adsorbing impurities is arranged in each fixed cavity 251; the rotating shaft 26 is arranged in the linkage groove 13 in a sliding mode, the transmission gear 27 is sleeved on the outer wall of the rotating shaft 26 through a flange structure, the rotating shaft 26 is connected with the linkage shaft 22 through belt transmission, the crushing barrel 23 is sleeved on the outer wall of the middle portion of the linkage shaft 22 through a bearing sleeve, the crushing barrel 23 is arranged in the circular sliding groove 11 in a sliding mode, execution gear teeth 231 meshed with the transmission gear 27 are evenly arranged on the outer wall of the right end of the crushing barrel 23 in the circumferential direction, the annular hole 232 matched with the feeding hole 12 is formed in the left end of the crushing barrel 23, and blanking holes 233 are evenly formed in the circumferential direction of the crushing barrel 23 from left to right.
During the specific work, the transmission motor 21 is turned on, the transmission motor 21 drives the crushing paddle 24 to rotate through the linkage shaft 22, during the period, the linkage shaft 22 drives the transmission gear 27 to rotate through the rotating shaft 26, the transmission gear 27 drives the crushing barrel 23 and the crushing paddle 24 to rotate oppositely through the execution gear teeth 231, and the crushing barrel 23 drives the shifting gear 25 to cooperate with the crushing paddle 24 to crush the feed raw materials; impurities in the crushed feed raw materials are adsorbed on the outer wall of the material poking teeth 25 under the action of the first electromagnetic block 252, and the crushed feed raw materials are matched with the blanking holes 233 to flow down to the screening unit 3 under the action of the crushing barrel 23.
Screening unit 3 includes blanking plate 31, location cylinder 32, limiting plate 33, telescopic spring pole 34, bracing piece 35, supplementary piece 36 and ejection of compact branch 37, wherein: the blanking plate 31 is arranged in the square sliding groove 14 in a sliding manner, and second electromagnetic blocks 312 for adsorbing impurities are symmetrically arranged in the blanking plate 31 along the left and right of the circular hole 311; the blanking plate 31 is uniformly provided with a circular hole 311 along the upper end of the blanking plate 31, an expansion spring rod 34 is arranged at the upper end of the right side of the blanking plate 31, the other end of the expansion spring rod 34 is arranged in a movable chute 15 in a sliding manner, a positioning cylinder 32 is arranged on the outer wall of the left end of the processing shell 1, the tail end of an expansion rod of the positioning cylinder 32 is connected with a limiting plate 33 through a bearing, the lower end of the limiting plate 33 is connected to the upper end of the left side of the blanking plate 31, supporting rods 35 are uniformly arranged along the inner wall of the lower end of the right side of a square chute 14 from front to back, the lower end of the right side of the blanking plate 31 is provided with an auxiliary block 36 in sliding connection with the supporting rods 35, the auxiliary block 36 is a triangular structure block for enabling the blanking plate 31 to reciprocate up and down, and the lower end of the auxiliary block 36 is in sliding connection with the upper end of the supporting rods 35; the discharging branch 37 is arranged on the inner wall of the lower end of the processing shell 1.
During specific work, the positioning cylinder 32 is opened, the positioning cylinder 32 drives the blanking plate 31 to reciprocate left and right through the limiting plate 33, and the blanking plate 31 cooperates with the support rod 35 and the telescopic spring rod 34 to perform left and right reciprocating screening treatment on the crushed feed raw materials under the action of the auxiliary block 36; during the screening, blanking plate 31 will cooperate the impurity adsorption in circular port 311 and No. two electromagnetism pieces 312 with feed ingredient on circular port 311 inner wall, after feed ingredient eduction gear is outside, No. two electromagnetism pieces 312 will adsorb impurity discharge flow on circular port 311 inner wall and fall to ejection of compact branch 37.
The discharging branch chain 37 comprises a pushing cylinder 371, a telescopic baffle 372 and a support plate 373, wherein: the pushing cylinders 371 are arranged on the inner wall of the lower end of the processing shell 1 in a bilateral symmetry mode, telescopic baffles 372 are hinged to the tail ends of telescopic rods of the pushing cylinders 371, the telescopic baffles 372 are connected to the inner wall of the processing shell 1 in a sliding mode, and the supporting plates 373 are arranged on the inner wall of the processing shell 1 below the first discharge port 16 and the second discharge port 17 in a left-right symmetry mode; when the device works specifically, the pushing cylinder 371 is opened, the pushing cylinder 371 drives the telescopic baffle 372 to be matched with the supporting plate 373 to reciprocate in the left-right circumferential direction along the pushing cylinder 371, so that feed raw materials and impurities are discharged to the outside of the device through the first discharge hole 16 and the second discharge hole 17 respectively.
The pig feed raw material preparation processing device comprises the following steps:
s1, starting device: putting the feed raw materials to be processed into the device, and starting the device;
s2, crushing the raw materials: the device crushing unit 2 crushes the feed raw materials into powder;
s3, electromagnetic screening: electromagnetically screening the raw material powder in the S2 through a screening unit 3 to remove impurities in the raw material;
s4, discharging: discharging the raw materials and impurities screened in the S3 to the outside of the device through a first discharge port 16 and a second discharge port 17 respectively.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a pig feed preparation raw materials preprocessing technology, this pig feed preparation raw materials preprocessing technology adopts following pig feed preparation raw materials preliminary treatment processingequipment, and pig feed preparation raw materials preliminary treatment processingequipment is including processing shell (1), crushing unit (2) and screening unit (3), its characterized in that: processing shell (1) inner wall middle part top bilateral symmetry has seted up circular spout (11), smashes in unit (2) slide sets up circular spout (11) again, and screening unit (3) set up on processing shell (1) middle part below inner wall, wherein:
a circular sliding groove (11) is symmetrically formed in the left and right positions above the middle portion of the inner wall of the processing shell (1), a feeding hole (12) is formed in the left end of the circular sliding groove (11), a linkage groove (13) is formed in the right end of the processing shell (1), a square sliding groove (14) is symmetrically formed in the left and right positions of the inner wall of the middle portion of the processing shell (1), a moving sliding groove (15) is formed in the upper end of the square sliding groove (14) in the right side, a first discharging hole (16) is formed in the left side below the middle portion of the processing shell (1), and a second discharging hole (17) is formed in the right side below the middle portion of the processing shell (1);
the crushing unit (2) comprises a transmission motor (21), a linkage shaft (22), a crushing barrel (23), a crushing paddle (24), a material poking tooth (25), a rotating shaft (26) and a transmission gear (27), wherein: the transmission motor (21) is arranged on the outer wall of the right end of the processing shell (1) through a motor base, an output shaft of the transmission motor (21) is connected with a linkage shaft (22) through a spline, the other end of the linkage shaft (22) is arranged on the inner wall of the left end of the processing shell (1) through a bearing, the crushing barrel (23) is sleeved on the outer wall of the linkage shaft (22) through the bearing, crushing paddles (24) are uniformly arranged along the circumferential direction of the linkage shaft (22) from left to right, material shifting teeth (25) are uniformly arranged along the circumferential direction of the inner wall of the crushing barrel (23), the rotating shaft (26) is arranged in the linkage groove (13) in a sliding manner, the transmission gear (27) is sleeved on the outer wall of the rotating shaft (26) through a flange structure, the rotating shaft (26) is connected with the linkage shaft (22) through belt transmission, the crushing barrel (23) is sleeved on the outer wall of the middle part of the linkage shaft (22) through the bearing, and the crushing barrel (23) is arranged in the circular sliding manner in the circular sliding groove (11), execution gear teeth (231) meshed with the transmission gear (27) are uniformly arranged on the outer wall of the right end of the crushing barrel (23) in the circumferential direction, an annular hole (232) matched with the feeding hole (12) is formed in the left end of the crushing barrel (23), and blanking holes (233) are uniformly formed in the circumferential direction from left to right along the crushing barrel (23);
screening unit (3) are including blanking plate (31), location cylinder (32), limiting plate (33), telescopic spring pole (34), bracing piece (35), auxiliary block (36) and ejection of compact branch chain (37), wherein: the blanking plate (31) is arranged in the square sliding groove (14) in a sliding mode, circular holes (311) are uniformly formed in the upper end of the blanking plate (31), the telescopic spring rod (34) is arranged at the upper end of the right side of the blanking plate (31), the other end of the telescopic spring rod (34) is arranged in the movable sliding groove (15) in a sliding mode, the positioning air cylinder (32) is arranged on the outer wall of the left end of the processing shell (1), the tail end of the telescopic rod of the positioning air cylinder (32) is connected with the limiting plate (33) through a bearing, the lower end of the limiting plate (33) is connected to the upper end of the left side of the blanking plate (31), the supporting rods (35) are uniformly arranged from front to back along the inner wall of the lower end of the right side of the square sliding groove (14), the auxiliary block (36) in sliding connection with the supporting rods (35) is arranged at the lower end of the blanking plate (31), and the discharging branch chain (37) is arranged on the inner wall of the lower end of the processing shell (1);
the pig feed raw material preparation processing device comprises the following steps:
s1, starting device: putting the feed raw materials to be processed into the device, and starting the device;
s2, crushing the raw materials: the device comprises a crushing unit (2) for crushing the feed raw materials into powder;
s3, electromagnetic screening: electromagnetically screening the raw material powder in the S2 through a screening unit (3) to remove impurities in the raw material;
s4, discharging: discharging the raw materials and impurities screened in the S3 to the outside of the device through a first discharge hole (16) and a second discharge hole (17) respectively;
a fixed cavity (251) is formed in the material shifting tooth (25), and a first electromagnetic block (252) used for adsorbing impurities is arranged in the fixed cavity (251).
2. The pig feed preparation raw material pretreatment process according to claim 1, characterized in that: ejection of compact branch chain (37) are including promoting cylinder (371), telescopic baffle (372) and backup pad (373), wherein: promote cylinder (371) bilateral symmetry and set up on processing shell (1) lower extreme inner wall, promote that cylinder (371) telescopic link is terminal to be articulated to have retractable baffle (372), retractable baffle (372) sliding connection is on processing shell (1) inner wall, and backup pad (373) bilateral symmetry sets up on processing shell (1) inner wall below discharge gate (16) and No. two discharge gates (17).
3. The pig feed preparation raw material pretreatment process according to claim 1, characterized in that: the right end of the processing shell (1) is of an L-shaped structure, and the linkage groove (13) is arranged inside the upper portion of the right end of the processing shell (1).
4. The pig feed preparation raw material pretreatment process according to claim 1, characterized in that: the auxiliary block (36) is a triangular structure block used for enabling the blanking plate (31) to move up and down in a reciprocating mode, and the lower end of the auxiliary block (36) is connected to the upper end of the supporting rod (35) in a sliding mode.
5. The pig feed preparation raw material pretreatment process according to claim 1, characterized in that: and a second electromagnetic block (312) for adsorbing impurities is arranged inside the blanking plate (31) along the left and right symmetry of the circular hole (311).
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| CN113180264A (en) * | 2021-04-28 | 2021-07-30 | 曾坤 | Automatic preparation machine and preparation method of functional chicken feed |
| CN115888912A (en) * | 2022-12-26 | 2023-04-04 | 江苏万瑞达生物科技股份有限公司 | Reducing mechanism is used in vitamin pig feed processing |
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