Special feed for black pigs and preparation method thereof

Abstract

The invention discloses a special feed for black pigs. The special feed is characterized by comprising the following raw materials: corn, fermented soybean meal, bran, sweet potato vine powder, fish meal, chicken intestine membrane protein powder, composite vitamins, composite minerals, lysine, methionine, table salt and a probiotic preparation. The preparation method of the special feed for the black pigs is characterized by comprising the following steps: S1, pretreating the raw materials; s2, mixing and stirring for the first time; s3, mixing and stirring for the second time; s4, mixing and stirring for the third time; and S5, drying. Aiming at the physiological characteristics of long growth cycle, mild energy and protein requirements and high dietary fiber and mineral substance requirements of black pigs, all the raw material components are accurately proportioned, so that the black pig feed is easier to digest and absorb, reduces the burden of gastrointestinal tracts, promotes intestinal peristalsis, improves the digestive function, meets the requirements of skeletal development and muscle growth, avoids deficiency or excess of micronutrients, and improves the production efficiency. The intestinal flora balance can be adjusted, and the immunity is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of black pig feed, and particularly relates to a special feed for black pigs and a preparation method thereof. BACKGROUND

[0002] As an excellent local pig breed in China, black pigs have the characteristics of firm meat, rich flavor and high nutritional value. The content of beneficial ingredients such as amino acids and unsaturated fatty acids in the muscle of black pigs is significantly higher than that of ordinary white pigs, and black pigs are deeply favored by consumers. In recent years, with the continuous improvement of people's demand for high-quality pork, the large-scale and standardized breeding industry of black pigs has developed rapidly. However, the problem of insufficient feed adaptability in the current black pig breeding process is more prominent, which seriously restricts the improvement of black pig breeding efficiency and meat quality.

[0003] In the prior art, most black pig breeding still uses ordinary pig feed. This kind of feed is mainly designed for the growth characteristics of white pigs and cannot match the physiological characteristics of black pigs, such as long growth period, slow growth rate, relatively moderate demand for energy and protein, and high demand for dietary fiber and minerals. Using ordinary feed to feed black pigs not only easily leads to uneven growth and development of black pigs, such as slow weight gain and decreased disease resistance, but also affects the flavor of the meat and reduces the added value of the product. At the same time, some black pig feeds with insufficient targeting have the problem of unreasonable raw material ratio. For example, too much energy raw material leads to excessive fat deposition in black pigs, or poor quality of protein raw material affects the digestion and absorption of black pigs. In terms of feed preparation process, black pig feed usually contains corn, soybean meal and other bulk raw materials, as well as vitamins, minerals, amino acids and other trace additives. Due to the large difference in particle size and specific gravity of different raw materials, it is difficult to achieve uniform distribution of each component by conventional methods. This will lead to excessive trace nutrients in some areas of the feed and insufficient content in some areas, resulting in uneven nutrient intake after black pigs eat, and further leading to uneven growth and development, decreased immunity and other problems. SUMMARY

[0004] In view of the problems in the above background art, the purpose of the present application is to provide a special feed for black pigs and a preparation method thereof.

[0005] To achieve the above technical purpose, the technical scheme adopted by the present application is as follows: A special feed for black pigs, by weight, comprises the following raw materials: corn 45-55 parts, fermented soybean meal 20-25 parts, bran 8-12 parts, sweet potato vine powder 5-8 parts, fish meal 3-5 parts, chicken intestinal membrane protein powder 1-2 parts, compound vitamin 0.3-0.5 parts, compound mineral 0.2-0.4 parts, lysine 0.1-0.2 parts, methionine 0.1-0.3 parts, salt 0.2-0.5 parts, probiotic preparation 0.1-0.2 parts.

[0006] Further limited, the complex vitamins are mixed by vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, vitamin B12 in weight ratio of 2:1:3:0.5:0.3:0.4:0.2:0.1.

[0007] Further limited, the complex minerals are mixed by iron, zinc, selenium in weight ratio of 5:3:0.05, and the carrier is zeolite powder, and the zeolite powder accounts for 60-70% of the total weight of the complex minerals.

[0008] Further limited, the probiotic preparation is mixed by Bacillus subtilis, Lactobacillus plantarum and Saccharomyces cerevisiae in weight ratio of 3:2:1.

[0009] 5. A method for preparing a special feed for black pigs, characterized in that the method comprises the following steps: S1: pretreatment of raw materials, corn, fermented soybean meal, bran, sweet potato vine powder are respectively crushed to a particle size of 80-100 mesh, fish meal, chicken intestinal membrane protein powder are crushed to a particle size of 120-150 mesh, and the complex vitamins, the complex minerals, lysine, methionine, salt, the probiotic preparation are respectively passed through a 150 mesh sieve for standby; S2: first mixing and stirring, the pretreated corn, fermented soybean meal, bran, sweet potato vine powder are put into the stirring mixer, the stirring speed is adjusted to 150-200 r / min, the stirring time is 15-20 min, and the primary mixed material is obtained by stirring and mixing; S3: second mixing and stirring, the fish meal and chicken intestinal membrane protein powder are added to the primary mixed material obtained in S2, the stirring speed is adjusted to 200-250 r / min, the stirring time is 10-15 min, and the secondary mixed material is obtained by stirring and mixing; S4: third mixing and stirring, the complex vitamins, the complex minerals, lysine, methionine, salt, the probiotic preparation are added to the secondary mixed material obtained in S3, the stirring speed is adjusted to 250-300 r / min, the stirring time is 20-25 min, and the semi-finished product is obtained by stirring and mixing; S5: drying, the semi-finished product obtained in S4 is dried again to a water content of 12-14%, and the finished feed is obtained.

[0010] Further specifying, in S2, the mixing machine includes a mixing tank, a feeding pipe installed on one side of the top of the mixing tank, a discharge pipe installed at the bottom of the mixing tank, a switching valve installed inside the discharge pipe, a motor mount installed on the other side of the top of the mixing tank, a servo motor mounted on the top of the motor mount, a first bevel gear connected to the power output end of the servo motor, a second bevel gear meshing with the lower side of the first bevel gear, a mixing shaft installed inside the second bevel gear, a bearing installed on the upper side of the mixing shaft, the bearing being installed at the top of the mixing tank, the lower side of the mixing shaft being disposed inside the mixing tank, a plurality of horizontally arranged first mixing blades being provided on the mixing shaft, and a second mixing blade with an inclined structure being provided on the lower side of the mixing shaft. This structural design facilitates uniform mixing.

[0011] Furthermore, a stirring frame is also installed on the stirring shaft, and a scraper is installed on the other side of the stirring frame. The scraper is disposed on the inner wall of the mixing tank, and the other side of the second stirring blade is disposed on the scraper. This structural design can also scrape off the material adhering to the inner wall of the mixing tank during the stirring process.

[0012] Further specifying, a third bevel gear meshes with the upper side of the first bevel gear, and a lifting shaft is installed inside the third bevel gear. The lifting shaft is rotatably disposed within the stirring shaft, and its bottom extends through the stirring shaft to the bottom of the mixing tank. A spiral stirring blade is installed on the outer side of the bottom of the lifting shaft, and the top of the spiral stirring blade is rotatably disposed on the outer side of the bottom of the stirring shaft. This structural design can lift and stir the material in the center, making the mixing more uniform.

[0013] Furthermore, the mixing tank has a hopper located on its lower interior side. The hopper has a funnel-shaped structure, wider at the top and narrower at the bottom. The spiral agitator is positioned inside the hopper, and the lower side of the scraper is fitted against the inner wall of the hopper. This structural design facilitates material discharge.

[0014] The beneficial effects of this invention are as follows: This invention addresses the physiological characteristics of black pigs, including their long growth cycle, mild energy and protein requirements, and high dietary fiber and mineral requirements. It precisely proportions the ingredients, with corn and fermented soybean meal providing mild energy and high-quality protein. The fermented soybean meal is more easily digested and absorbed by black pigs, reducing the burden on their gastrointestinal tract. Wheat bran and sweet potato vine powder supplement dietary fiber, promoting intestinal peristalsis and improving digestive function. Fish meal and chicken intestinal membrane protein powder provide abundant high-quality protein to meet the muscle growth needs of black pigs. Compound vitamins and minerals are precisely matched to the growth needs of black pigs, avoiding micronutrient deficiencies or excesses. Probiotic preparations regulate the balance of intestinal flora and enhance immunity.

[0015] The present application can avoid the disadvantage that the materials at the bottom and center cannot participate in mixing by the cooperation of the first stirring blade, the second stirring blade, the stirring frame, the scraper and the spiral stirring blade, the spiral stirring blade can lift the materials at the bottom and center upward for mixing, the first stirring blade, the second stirring blade and the stirring frame can also scatter the agglomerated materials during stirring, and the first stirring blade, the second stirring blade and the spiral stirring blade form bidirectional stirring action in the stirring tank, further improving the mixing effect to realize the uniform distribution of each component. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application can be further illustrated by the non-limiting examples shown in the accompanying drawings. Figure 1 A flowchart of a method for manufacturing a special feed for black pigs according to an embodiment of the present application; Figure 2 A structure diagram of a mixing machine for a method for manufacturing a special feed for black pigs according to an embodiment of the present application The main element symbols are explained as follows: Stirring tank 1, feeding pipe 2, discharging pipe 3, on-off valve 4, motor base 5, servo motor 6, first bevel gear 7, second bevel gear 8, stirring shaft 9, bearing 10, first stirring blade 11, second stirring blade 12, stirring frame 13, scraper 14, third bevel gear 15, lifting shaft 16, spiral stirring blade 17, lower hopper 18. DETAILED DESCRIPTION

[0017] In order for those skilled in the art to better understand the present application, the technical solutions of the present application are further described below in combination with the accompanying drawings and examples. EMBODIMENT

[0018] A special feed for black pigs, by weight, includes the following raw materials: corn 55 parts, fermented soybean meal 22 parts, bran 10 parts, sweet potato vine powder 6 parts, fish meal 4 parts, chicken intestinal membrane protein powder 1.5 parts, compound vitamin 0.4 parts, compound mineral 0.3 parts, lysine 0.15 parts, methionine 0.1 parts, salt 0.4 parts, probiotic preparation 0.15 parts.

[0019] The compound vitamin is mixed by vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6 and vitamin B12 in a weight ratio of 2:1:3:0.5:0.3:0.4:0.2:0.1, the compound mineral is mixed by iron, zinc and selenium in a weight ratio of 5:3:0.05, the carrier is zeolite powder, and the zeolite powder accounts for 65% of the total weight of the compound mineral, and the probiotic preparation is mixed by bacillus subtilis, lactobacillus plantarum and saccharomyces cerevisiae in a weight ratio of 3:2:1.

[0020] The corn, fermented soybean meal, bran, sweet potato vine powder are respectively crushed to a particle size of 90 mesh, the fish meal, chicken intestinal membrane protein powder is crushed to a particle size of 130 mesh; the compound vitamin, compound mineral, lysine, methionine, salt, probiotic preparation are respectively passed through a 150 mesh sieve, and are ready for use. The pretreated corn, fermented soybean meal, bran, sweet potato vine powder are put into a stirring mixer, the stirring speed is adjusted to 180 r / min, and the stirring time is 18 min to obtain a primary mixed material. The fish meal and chicken intestinal membrane protein powder are added to the primary mixed material, the stirring speed is adjusted to 220 r / min, and the stirring time is 12 min to obtain a secondary mixed material. The compound vitamin, compound mineral, lysine, methionine, salt and probiotic preparation are put into the secondary mixed material, the stirring speed is adjusted to 280 r / min, and the stirring time is 22 min to ensure that the material is evenly turned over. The semi-finished product is obtained by mixing, and finally dried to a water content of 13% to obtain the finished feed. Embodiment

[0021] A special feed for black pigs, by weight, comprises the following raw materials: corn 45 parts, fermented soybean meal 25 parts, bran 12 parts, sweet potato vine powder 9.5 parts, fish meal 5 parts, chicken intestinal membrane protein powder 2 parts, compound vitamin 0.4 parts, compound mineral 0.3 parts, lysine 0.1 parts, methionine 0.3 parts, salt 0.3 parts, probiotic preparation 0.1 parts.

[0022] The compositions of the compound vitamin, the compound mineral and the probiotic preparation are the same as those in Embodiment 1.

[0023] The corn, fermented soybean meal, bran, sweet potato vine powder are respectively crushed to a particle size of 80 mesh, the fish meal, chicken intestinal membrane protein powder is crushed to a particle size of 120 mesh; the compound vitamin, compound mineral, lysine, methionine, salt, probiotic preparation are respectively passed through a 150 mesh sieve, and are ready for use. The pretreated corn, fermented soybean meal, bran, sweet potato vine powder are put into a stirring mixer, the stirring speed is adjusted to 150 r / min, and the stirring time is 15 min to obtain a primary mixed material. The fish meal and chicken intestinal membrane protein powder are added to the primary mixed material, the stirring speed is adjusted to 200 r / min, and the stirring time is 10 min to obtain a secondary mixed material. The compound vitamin, compound mineral, lysine, methionine, salt and probiotic preparation are put into the secondary mixed material, the stirring speed is adjusted to 250 r / min, and the stirring time is 20 min to ensure that the material is evenly turned over. The semi-finished product is obtained by mixing, and finally dried to a water content of 12% to obtain the finished feed. Embodiment

[0024] A kind of black pig special feed, by weight parts, including the following raw materials: corn 50 parts, fermented soybean meal 22 parts, bran 12 parts, sweet potato vine powder 8 parts, fish meal 5 parts, chicken intestinal membrane protein powder 2 parts, compound vitamin 0.3 parts, compound mineral 0.2 parts, lysine 0.1 parts, methionine 0.1 parts, salt 0.2 parts, probiotic preparation 0.1 parts.

[0025] Wherein, the composition of compound vitamin, compound mineral and probiotic preparation is same with example 1.

[0026] Corn, fermented soybean meal, bran, sweet potato vine powder are respectively crushed to 100 mesh, fish meal, chicken intestinal membrane protein powder are crushed to 150 mesh;Compound vitamin, compound mineral, lysine, methionine, salt, probiotic preparation are respectively passed through 150 mesh screen, for standby, the pretreated corn, fermented soybean meal, bran, sweet potato vine powder are put into stirring mixer, adjust stirring speed to 200r / min, stirring time is 20min, obtain primary mixture material, fish meal, chicken intestinal membrane protein powder are added to primary mixture material, adjust stirring speed to 250r / min, stirring time is 15min, obtain secondary mixture material, compound vitamin, compound mineral, lysine, methionine, salt, probiotic preparation are put into secondary mixture material, adjust stirring speed to 300r / min, stirring time is 25min, ensure that material is evenly turned, mix to obtain semi-finished product, finally dry to moisture content at 14%, obtain finished feed.

[0027] Example 4, as Figure 2 shown, this embodiment is based on example 1, example 2 and example 3, increase as follows structure, stirring mixer includes stirring tank 1, the top side of stirring tank 1 is installed with feeding pipe 2, the bottom of stirring tank 1 is installed with discharge pipe 3, the discharge pipe 3 is installed with switch valve 4, the other side of the top of stirring tank 1 is installed with motor base 5, the top of motor base 5 is installed with servo motor 6, the power output end of servo motor 6 is connected with first bevel gear 7, the lower side of first bevel gear 7 is meshed with second bevel gear 8, second bevel gear 8 is installed with stirring shaft 9, the upper side of stirring shaft 9 is installed with bearing 10, bearing 10 is installed at the top of stirring tank 1, the lower side of stirring shaft 9 is arranged in stirring tank 1, a plurality of first stirring blades 11 arranged horizontally are arranged on stirring shaft 9, the lower side of stirring shaft 9 is provided with second stirring blade 12 arranged in inclined structure.

[0028] In this embodiment, during the mixing process, raw materials such as corn, fermented soybean meal, wheat bran, sweet potato vine powder, fish meal, chicken intestinal membrane protein powder, compound vitamins, compound minerals, lysine, methionine, salt, and probiotic preparations are fed into the mixing tank 1 through the feeding pipe 2. The servo motor 6 drives the first bevel gear 7 to rotate, the first bevel gear 7 drives the meshing second bevel gear 8 to rotate, and the second bevel gear 8 drives the stirring shaft 9 to rotate within the bearing 10. The stirring shaft 9 drives several first stirring blades 11 and second stirring blades 12 to perform uniform mixing in the mixing tank 1. The first stirring blades 11 can be used to mix the upper layer of materials, and the second stirring blades 12 can be used to mix the lower layer of materials. After the mixing is completed, the material is output from the discharge pipe 3 by opening the switch valve 4.

[0029] Example 5, as Figure 2 As shown, this embodiment adds the following structure based on embodiment 4: a stirring frame 13 is also installed on the stirring shaft 9, and a scraper 14 is installed on the other side of the stirring frame 13. The scraper 14 is set on the inner wall of the stirring tank 1, and the other side of the second stirring blade 12 is set on the scraper 14.

[0030] In this embodiment, during the process of stirring the first stirring blade 11 and the second stirring blade 12 by rotating the stirring shaft 9, the stirring shaft 9 can also synchronously drive the stirring frame 13 to rotate inside the stirring tank 1. When the stirring frame 13 rotates, it can also stir and mix the raw materials in the stirring tank 1. Furthermore, the other side of the stirring frame 13 drives the scraper 14 to rotate and move on the inner wall of the stirring tank 1, which can scrape off the raw materials adhering to the inner wall of the stirring tank 1 and mix them, thereby improving the usage effect.

[0031] Example 6, as Figure 2 As shown, this embodiment adds the following structure based on embodiment 4: a third bevel gear 15 meshes with the upper side of the first bevel gear 7, a lifting shaft 16 is installed inside the third bevel gear 15, the lifting shaft 16 is rotatably disposed inside the stirring shaft 9, the bottom of the lifting shaft 16 passes through the stirring shaft 9 and extends to the bottom of the stirring tank 1, a spiral stirring blade 17 is installed on the outer side of the bottom of the lifting shaft 16, and the top of the spiral stirring blade 17 is rotatably disposed on the outer side of the bottom of the stirring shaft 9.

[0032] In this embodiment, during the rotation of the stirring shaft 9 driven by the servo motor 6, the servo motor 6 drives the first bevel gear 7, and the first bevel gear 7 drives the second bevel gear 8 to rotate. At the same time, the first bevel gear 7 can also drive the third bevel gear 15 to rotate. The third bevel gear 15 drives the lifting shaft 16 to rotate in the opposite direction inside the stirring shaft 9. The bottom of the stirring shaft 9 drives the spiral stirring blade 17 to rotate, so that the spiral stirring blade 17 can lift the raw materials accumulated in the middle and bottom, so that the raw materials accumulated in the middle and bottom can be continuously transported to the upper side for mixing, avoiding the disadvantage that the raw materials at the bottom and middle cannot participate in the mixing.

[0033] Example 7, as Figure 2 As shown, this embodiment adds the following structure based on embodiment 4: a hopper 18 is provided on the lower side of the inside of the mixing tank 1. The hopper 18 is arranged in a trumpet shape with a larger upper part and a smaller lower part. The spiral stirring blade 17 is arranged inside the hopper 18. The lower side of the scraper 14 is attached to the inner wall of the hopper 18.

[0034] In this embodiment, the hopper 18, which is shaped like a trumpet with a larger upper part and a smaller lower part, is combined with the spiral stirring blade 17 to guide and gather the material for output and improve the mixing effect. When working, the scraper 14 can simultaneously clean the inner wall of the hopper 18.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A feed specially for black pig, characterized in that: The raw materials include, by weight, corn 45-55 parts, fermented soybean meal 20-25 parts, bran 8-12 parts, sweet potato vine powder 5-8 parts, fish meal 3-5 parts, chicken intestinal membrane protein powder 1-2 parts, compound vitamin 0.3-0.5 parts, compound mineral 0.2-0.4 parts, lysine 0.1-0.2 parts, methionine 0.1-0.3 parts, salt 0.2-0.5 parts, and probiotic preparation 0.1-0.2 parts. ​ 2. The feed according to claim 1, characterized in that: The compound vitamin is obtained by mixing vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6 and vitamin B12 in a weight ratio of 2:1:3:0.5:0.3:0.4:0.2:0.

1.

3. The feedstuff according to claim 2, characterized in that: The compound mineral is obtained by mixing iron, zinc and selenium in a weight ratio of 5:3:0.

05. The carrier is zeolite powder, and the zeolite powder accounts for 60-70% of the total weight of the compound mineral.

4. The feed of claim 3, wherein: The probiotic preparation is obtained by mixing Bacillus subtilis, Lactobacillus plantarum and Saccharomyces cerevisiae in a weight ratio of 3:2:

1.

5. A method for preparing the special feed for black pigs according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: S1: raw material pretreatment, corn, fermented soybean meal, bran, sweet potato vine powder are respectively crushed to a particle size of 80-100 mesh, fish meal and chicken intestinal membrane protein powder are crushed to a particle size of 120-150 mesh, compound vitamin, compound mineral, lysine, methionine, salt and probiotic preparation are respectively passed through a 150 mesh sieve, and are ready for use; S2: first mixing and stirring, the pretreated corn, fermented soybean meal, bran and sweet potato vine powder are put into a stirring mixer, the stirring speed is adjusted to 150-200 r / min, the stirring time is 15-20 min, and a primary mixed material is obtained by stirring and mixing; S3: second mixing and stirring, fish meal and chicken intestinal membrane protein powder are added to the primary mixed material obtained in S2, the stirring speed is adjusted to 200-250 r / min, the stirring time is 10-15 min, and a secondary mixed material is obtained by stirring and mixing; S4: third mixing and stirring, compound vitamin, compound mineral, lysine, methionine, salt and probiotic preparation are added to the secondary mixed material obtained in S3, the stirring speed is adjusted to 250-300 r / min, the stirring time is 20-25 min, and a semi-finished product is obtained by stirring and mixing; S5: drying, the semi-finished product obtained in S4 is dried again to a water content of 12-14%, and a finished feed is obtained.

6. The method for preparing a special feed for black pigs according to claim 5, characterized in that: In the S2, the stirring mixer comprises a stirring tank (1), one side of the top of the stirring tank (1) is provided with a feeding pipe (2), the bottom of the stirring tank (1) is provided with a discharging pipe (3), the discharging pipe (3) is provided with an on-off valve (4), the other side of the top of the stirring tank (1) is provided with a motor base (5), the top of the motor base (5) is provided with a servo motor (6), the power output end of the servo motor (6) is connected with a first bevel gear (7), the lower side of the first bevel gear (7) is engaged with a second bevel gear (8), the second bevel gear (8) is provided with a stirring shaft (9), the upper side of the stirring shaft (9) is provided with a bearing (10), the bearing (10) is arranged on the top of the stirring tank (1), the lower side of the stirring shaft (9) is arranged in the stirring tank (1), the stirring shaft (9) is provided with a plurality of first stirring blades (11) arranged horizontally, the lower side of the stirring shaft (9) is provided with a second stirring blade (12) arranged in an inclined structure.

7. The method of claim 6, wherein the feed is prepared by mixing the feed ingredients in the following proportions: The stirring shaft (9) is further provided with a stirring frame (13), the other side of the stirring frame (13) is provided with a scraper (14), the scraper (14) is arranged on the inner wall of the stirring tank (1), the other side of the second stirring blade (12) is arranged on the scraper (14). ​ 8. The method for preparing a special feed for black pigs according to claim 7, characterized in that: The upper side of the first bevel gear (7) is engaged with a third bevel gear (15), the third bevel gear (15) is provided with a lifting shaft (16), the lifting shaft (16) is rotatably arranged in the stirring shaft (9), the bottom of the lifting shaft (16) penetrates through the stirring shaft (9) and extends to the bottom of the stirring tank (1), the bottom of the lifting shaft (16) is provided with a spiral stirring blade (17), the top of the spiral stirring blade (17) is rotatably arranged on the outer side of the bottom of the stirring shaft (9).

9. The method for preparing a special feed for black pigs according to claim 8, characterized in that: The inner bottom of the stirring tank (1) is provided with a lower hopper (18), the lower hopper (18) is arranged in a horn structure with large top and small bottom, the spiral stirring blade (17) is arranged in the lower hopper (18), the lower side of the scraper (14) is arranged on the inner wall of the lower hopper (18).

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