Grain particle mixing device

Abstract

The invention provides a grain particle mixing device, and belongs to the technical field of grain particle mixing, the device comprises: a premixing barrel, the top of which is provided with a feeding hole, the bottom of which is provided with a blanking pipe, the inside of the premixing barrel is provided with a material separation plate, and the material separation plate is provided with a discharging hole; the mixing barrel is internally provided with an upper cavity and a lower cavity which are communicated with each other, the upper cavity and the lower cavity are both of conical structures, the conical bottoms of the upper cavity and the lower cavity are oppositely arranged, and a discharging pipe is arranged at the lower end of the mixing barrel; the stirring body is coaxially arranged in the mixing barrel and comprises an upper cone and a lower cone; the hollow shaft penetrates through the premixing cylinder and rotates around the axis of the hollow shaft, and a plurality of groups of first stirring shafts and second stirring shafts are uniformly arranged on the hollow shaft along the axis; the liquid storage pipe is arranged in the hollow shaft, and spraying holes are formed in the lower end of the liquid storage pipe along the circumference; and the material scattering mechanism is arranged on the hollow shaft in the material falling pipe and is positioned above the spraying holes. The mixing device has good mixing continuity, and can effectively improve the mixing uniformity degree of grain particles and an adhesive at the same time.

Description

Technical Field

[0001] The present application belongs to the technical field of grain particle mixing, and in particular, relates to a grain particle mixing device. Background Art

[0002] Cereal cakes, a type of organic food, are made from a variety of cereal grains and a binder made from maltose syrup as raw materials without adding any preservatives. They are healthy and environmentally friendly foods. In the production process, a variety of cereal grains and binders are first mixed. The cereal grains are first poured into a mixing barrel, and the stirring shaft in the barrel stirs and mixes the cereal grains. Then, the binder is poured into the mixing barrel for further mixing. After that, the mixed cereal grains are pressed, dried, cut into pieces, etc., to form cereal cakes.

[0003] It was found in actual production that such mixing method is not continuous, that is, grain particles can only be mixed in batches, which is not conducive to improving production efficiency; when adding adhesives, due to the density difference between the adhesives and grain particles, the adhesives sink to the bottom and the grain particles clump together, which leads to a low degree of mixing uniformity and affects the production quality of grain cakes. Summary of the invention

[0004] In order to solve the above-mentioned deficiencies of the prior art, the present application provides a grain particle mixing device, which has good mixing continuity and can effectively improve the mixing uniformity of grain particles and adhesive.

[0005] In order to achieve the above object, the present invention adopts the following technologies: A cereal grain mixing device, comprising: The premixing barrel has a feed hole on the top and a drop pipe with a smaller diameter coaxially arranged at the bottom. A partition plate is arranged in the middle section of the premixing barrel, and a discharge hole is opened on the partition plate. The mixing barrel has an upper cavity and a lower cavity connected to each other, and both the upper cavity and the lower cavity are conical structures, and the cone bottoms are arranged oppositely. The lower end of the mixing barrel is provided with a discharge pipe connected to the lower cavity, and the lower end of the discharge pipe is inserted into the upper cavity; The stirring body is coaxially arranged inside the mixing barrel, and includes an upper cone and a lower cone. There are annular cavities between the outer wall of the upper cone and the inner wall of the upper cavity, and between the outer wall of the lower cone and the inner wall of the lower cavity. The stirring body is arranged to rotate around its own axis. A hollow shaft is coaxially arranged in the premixing barrel and rotated around its own axis. A plurality of first stirring shafts and second stirring shafts are evenly arranged along the axis on the hollow shaft. The first stirring shaft is located above the partition plate. A group of first stirring shafts close to the partition plate is separated from the top of the partition plate by a predetermined distance. The shape of the first stirring shaft matches the shape of the discharge hole. The second stirring shaft is located below the partition plate. A liquid storage tube is coaxially arranged inside the hollow shaft, and spray holes are opened along the circumference of the lower end of the liquid storage tube, and the spray holes all protrude from the lower end of the hollow shaft; The material spreading mechanism is arranged on the hollow shaft in the drop pipe and is located above the spray hole, and is used to make the granular material fall evenly along the periphery of the spray hole.

[0006] Furthermore, the material spreading mechanism includes a rotating column arranged on a hollow shaft, the rotating column is a cylinder, and its axis is arranged to coincide with the axis of the hollow shaft. The rotating column is located in the drop tube and above the spray hole, and its top is a conical surface with the top of the cone facing upward. There is an annular gap between the rotating column and the inner wall of the drop tube, which is used to make the material fall evenly along the circumference.

[0007] Furthermore, a plurality of first guide grooves are provided on the circumference of the rotating column along the axial direction, and the first guide grooves are evenly arranged along the circumference of the rotating column.

[0008] Furthermore, the discharge hole is a strip hole, each first stirring shaft is arranged perpendicular to the axis of the hollow shaft, the first stirring shafts in each group are evenly arranged around the axis of the hollow shaft, and the number is consistent with the number of discharge holes, the length and width of the first stirring shafts are respectively adapted to the length and width of the discharge hole, and the projection contours of any two adjacent groups of first stirring shafts along the axis of the hollow shaft do not overlap; each second stirring shaft is arranged perpendicular to the axis of the hollow shaft, there are multiple second stirring shafts in each group and they are evenly arranged around the axis of the hollow shaft, and the projection contours of any two adjacent groups of second stirring shafts along the axis of the hollow shaft do not overlap.

[0009] Furthermore, a stirring chamber is formed in the middle of the mixing barrel and protrudes along its circumference. The middle part of the stirring body is cylindrical. A plurality of groups of third stirring shafts evenly arranged along the axis are provided in the middle of the stirring body, and each group has a plurality of third stirring shafts evenly arranged around the axis of the stirring body. The axes of the third stirring shafts are coplanar and perpendicular to the axis of the stirring body, and the projections of the third stirring shafts of each group along the axis of the stirring body coincide.

[0010] Furthermore, a plurality of groups of fourth stirring shafts evenly arranged along the axis are provided on the wall of the stirring chamber, and each group has a plurality of fourth stirring shafts evenly arranged along the circumference of the stirring chamber, the axes of the fourth stirring shafts are coplanar and perpendicularly intersecting the axis of the mixing barrel, and the projections of the fourth stirring shafts of each group along the axis of the mixing barrel coincide; each group of fourth stirring shafts is arranged with one group of third stirring shafts in between.

[0011] Furthermore, a plurality of second guide grooves are formed on the upper cone and the lower cone of the stirring body and are evenly arranged along the circumference of the stirring body. The paths of the second guide grooves are in the form of arcs and convex toward the rotation direction of the stirring body.

[0012] Furthermore, a mounting plate is provided parallel to the top of the premixing barrel, support rods are provided vertically at the four corners of the mounting plate, a plurality of storage boxes are provided above the mounting plate, the storage boxes are respectively connected to the corresponding feed holes through feeding pipes, a liquid storage tank is provided above the mounting plate for conveying slurry to the liquid storage pipe, a first motor is also provided above the mounting plate, a driving end of the motor passes through the mounting plate and is coaxially connected to a driving gear, a driven gear is coaxially provided on the upper part of the hollow shaft, the driven gear is meshed with the driving gear, support rings are provided on the outer sides of the premixing barrel and the top of the upper cavity, four support frames are connected to the circumferential side of the support ring, and the other ends of the support frames are respectively connected to the corresponding support rods.

[0013] The beneficial effects of the present invention are: By arranging a premixing barrel, a liquid storage pipe, a mixing barrel, a stirring body and a spreading mechanism, and coordinating the rotation of a partition plate, a first stirring shaft and a second stirring shaft, not only can continuous and multiple mixing of cereal particles be achieved, thereby improving production efficiency, but also the sinking of adhesives and the agglomeration of cereal particles can be effectively avoided, thereby effectively improving the uniformity of mixing of the mixing device and thus improving the production quality of cereal cakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the device of the embodiment of the present application.

[0015] Figure 2 It is a cross-sectional view of the device according to the embodiment of the present application.

[0016] Figure 3 It is a schematic diagram of the structure of the premixing barrel of an embodiment of the present application.

[0017] Figure 4 It is a cross-sectional view of the premixing barrel of the embodiment of the present application.

[0018] Figure 5 It is a schematic diagram of the structure of the partition plate of the embodiment of the present application.

[0019] Figure 6 yes Figure 2 A magnified view of the part in the figure.

[0020] Figure 7 It is a cross-sectional view of the mixing barrel and the stirring body of the embodiment of the present application.

[0021] Figure 8 It is a schematic diagram of the structure of the hollow shaft of the embodiment of the present application.

[0022] Fig. 9 It is a schematic diagram of the structure of the stirring body of the embodiment of the present application.

[0023] Fig.10 yes Figure 1 A magnified view of the part B in the figure.

[0024] Figure markings: 1-premixing barrel, 11-first shaft hole, 12-feeding hole, 13-dropping pipe, 14-partitioning plate, 141-second shaft hole, 142-discharging hole, 2-mixing barrel, 21-discharging pipe, 22-stirring chamber, 23-fourth stirring shaft, 3-stirring body, 31-second guide groove, 32-third stirring shaft, 4-hollow shaft, 41-first stirring shaft, 42-second stirring shaft, 43-driven gear, 5-liquid storage pipe, 51-spray hole, 6-spreading mechanism, 61-rotating column, 62-first guide groove, 7-mounting plate, 71-support rod, 72-storage box, 73-feeding pipe, 74-liquid storage box, 75-first motor, 76-driving gear, 77-support ring, 78-support frame, 79-second motor. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Example 1 The present application embodiment provides a grain mixing device, such as Figure 1 to Figure 6 As shown, the device includes: a premixing barrel 1, a mixing barrel 2, a stirring body 3, a hollow shaft 4, a liquid storage tube 5 and a material spreading mechanism 6.

[0027] The top of the premixing barrel 1 is provided with a first axial hole 11 and three feeding holes 12. This embodiment adopts a mixing example of three kinds of grain particles and adhesives. The axis of the first axial hole 11 is arranged to coincide with the axis of the premixing barrel 1. The bottom surface of the premixing barrel 1 is conical and coaxially connected to a drop pipe 13 with a smaller diameter. A partition plate 14 is formed in the middle section of the interior of the premixing barrel 1 and is arranged perpendicular to the axis of the first axial hole 11. The partition plate 14 is provided with a second axial hole 141 and a plurality of discharge holes. The first hole 142 is located at the middle of the material partition plate 14, and the second axial hole 141 is located in the middle of the material partition plate 14. The discharge holes 142 are evenly arranged around the axis of the premixing barrel 1. The mixing barrel 2 is arranged below the premixing barrel 1, and has an upper cavity and a lower cavity that are connected to each other. The upper cavity and the lower cavity are both conical structures, and the cone bottoms are arranged oppositely. The lower end of the mixing barrel 2 is provided with a discharge pipe 21 connected to the lower cavity. The lower end of the discharge pipe 13 is inserted into the upper cavity. The axis of the mixing barrel 2 is arranged to coincide with the axis of the premixing barrel 1. The stirring body 3 is coaxially arranged inside the mixing barrel 2, and includes an upper cone and a lower cone. There are annular cavities between the outer wall of the upper cone and the inner wall of the upper cavity, and between the outer wall of the lower cone and the inner wall of the lower cavity. The stirring body 3 is arranged to rotate around its own axis, and the axis of the stirring body 3 coincides with the axis of the mixing barrel 2. The annular cavity is used to further mix the three kinds of grain particles and the adhesive. The hollow shaft 4 passes through the first shaft hole 11 and the second shaft hole 141 and is rotatably arranged around its own axis. A plurality of groups of first stirring shafts 41 and second stirring shafts 42 are evenly arranged along the axis on the hollow shaft 4. The first stirring shafts 41 are located above the material separator 14. A group of first stirring shafts 41 close to the material separator 14 is separated from the top of the material separator 14 by a predetermined distance. The shape of the first stirring shaft 41 is adapted to the shape of the discharge hole 142. The second stirring shaft 42 is located below the material separator 14. The liquid storage tube 5 is coaxially arranged inside the hollow shaft 4, and a spray hole 51 is opened along the circumference of the lower end of the liquid storage tube 5, and the spray holes 51 all protrude from the lower end of the hollow shaft 4, which are used to spray adhesive to the circumference of the bottom of the liquid storage tube 5; the material spreading mechanism 6 is arranged on the hollow shaft 4 in the drop pipe 13 and is located above the spray hole 51, which is used to make the material fall evenly along the circumference of the spray hole 51.

[0028] The mixing principle of the mixing device is as follows: First Mix: like Figure 2~Figure 4 As shown, the hollow shaft 4 continuously rotates around its own axis, thereby driving the first stirring shaft 41 and the second stirring shaft 42 to continuously rotate, and the three kinds of grain particles are continuously fed through the corresponding feeding holes 12. After entering the premixing barrel 1, due to the effect of gravity, the grain particles will fall from the upper end of the premixing barrel 1 to the partition plate 14. At the same time, under the action of the first stirring shaft 41, the three kinds of grain particles will be broken up and reorganized and mixed many times during the whole falling process; because the shape of the first stirring shaft 41 is adapted to the shape of the discharge hole 142 and a group of first stirring shafts 41 close to the partition plate 14 are separated from the top of the partition plate 14 by a predetermined distance, That is, when the hollow shaft 4 rotates around its own axis at a predetermined angle, a group of first stirring shafts 41 close to the partition plate 14 can completely block the discharge hole 142, and block the grain particles above the partition plate 14, so that the grain particles gather above the partition plate 14; when the hollow shaft 4 drives the first stirring shafts 41 to rotate, a group of first stirring shafts 41 close to the partition plate 14 can push the grain particles on the partition plate 14 into the discharge hole 142, thereby passing through the partition plate 14; since the feed hole 12 is a continuous feed, the granular material that preferentially enters the premixing barrel 1 will be pushed into the discharge hole 142 by a group of first stirring shafts 41 close to the partition plate 14 after mixing. By setting the first stirring shaft 41 and under the action of gravity of the grain particles, multiple grain particles are broken up and recombined and mixed. At the same time, with the cooperation of the first stirring shaft 41 and the discharge hole 142, the grain particles that first enter the premixing barrel 1 first pass through the partition plate 14 from the discharge hole 142, realizing the first-in-first-out of the grain particles, improving the continuity of mixing of the mixing device, and thus improving production efficiency.

[0029] Second Mixing: like Figure 2 and Figure 6As shown, the grain particles passing through the discharge hole 142 will enter the cavity formed between the partition plate 14 and the bottom of the premixing barrel 1 for a second mixing. Since the spreading mechanism 6 is arranged on the hollow shaft 4 in the drop tube 13, the grain particles can be effectively restricted from directly entering the drop tube 13, so that the grain particles are accumulated at the bottom of the premixing barrel 1, that is, above the spreading mechanism 6. During this period, the hollow shaft 4 drives the second stirring shaft 42 to rotate, so as to further mix the grain particles. The hollow shaft 4 also drives the spreading mechanism 6 to operate. The spreading mechanism 6 continues to evenly drop the grain particles at the bottom of the premixing barrel 1 along the side of the spray hole 51, which not only achieves further mixing of the grain particles, but also enables the grain particles that first pass through the discharge hole 142 to be preferentially mixed for a second time and to be preferentially discharged by the spreading mechanism 6, that is, to achieve the first-in-first-out of the grain particles.

[0030] Spray adhesive: like Figure 6 As shown, while the spreading mechanism 6 causes the grains to fall evenly along the periphery of the spray hole 51, the spray hole 51 sprays the adhesive in the liquid storage tube 5 toward the periphery of the lower end of the liquid storage tube 5, so that the falling grains are evenly sprayed with the adhesive, making the contact between the grains and the adhesive more uniform, effectively solving the problem of directly pouring the adhesive into the grains for mixing, resulting in the adhesive sinking to the bottom, the grains agglomerating, and uneven mixing.

[0031] Third mixing: like Figure 2 , Figure 6 , Figure 7 As shown, the grains sprayed with adhesive continuously fall on the top of the stirring body 3 through the drop pipe 13, and the stirring body 3 continuously rotates around its own axis. Due to the rotation of the stirring body 3, the grains on the top of the stirring body 3 can be brought into the annular cavity formed between the mixing barrel 2 and the stirring body 3. Since the mixing barrel 2 has an upper cavity and a lower cavity that are interconnected, and the upper cavity and the lower cavity are both conical structures, and the cone bottoms are relatively arranged, the stirring body 3 includes an upper cone and a lower cone, so that the annular cavity formed between the mixing barrel 2 and the stirring body 3 is more narrow and long, and under the action of the rotation and conical structure of the stirring body 3, the grains and the adhesive can be more fully kneaded and mixed in the annular cavity, so that the grains are bonded more stably and tightly by the adhesive, and at the same time, the grains can move along the annular cavity to the discharge pipe 21 to realize automatic discharge; through the above arrangement, the third mixing process also realizes continuous mixing of grains and first-in-first-out of grains.

[0032] The above-mentioned first mixing, second mixing, spraying of adhesive and third mixing are carried out continuously, and at the same time, the grain particles that enter the mixing first can be discharged first, so that the mixing device has the function of continuous production, which effectively solves the problem that traditional mixing devices cannot mix continuously and cannot achieve first-in-first-out of materials, effectively improves production efficiency, and at the same time effectively improves the uniformity of mixing of grain particles in the mixing device.

[0033] Specifically, Figure 6 and Figure 8 As shown, the material spreading mechanism 6 includes a rotating column 61 arranged on the hollow shaft 4. The rotating column 61 is a cylinder, and its axis is arranged to coincide with the axis of the hollow shaft 4. The rotating column 61 is located in the drop tube 13 and above the spray hole 51. The top of the rotating column is a conical surface, and the top of the cone faces upward. There is an annular gap between the rotating column 61 and the inner wall of the drop tube 13. A plurality of first guide grooves 62 are opened on the circumference of the rotating column 61 along the axial direction. The first guide grooves 62 are evenly arranged along the circumference of the rotating column 61. When in use, since the top of the rotating column 61 is a conical surface, the grains passing through the partition plate 14 will enter the circumference of the top of the rotating column 61 along the conical surface at the bottom of the premixing barrel 1. At the same time, the hollow shaft 4 drives the rotating column 61 to rotate, so that the grains on the circumference of the top of the rotating column 61 automatically enter the annular interval formed by the rotating column 61 and the drop tube 13. The first guide groove 62 rotates with the rotating column 61, and evenly extends the grains inside on the wall of the drop tube 13, so that the grains fall evenly along the circumference of the spray hole 51. Through the structural design of the rotating column 61 and the driving of the hollow shaft 4, the grains can fall evenly, ensuring the uniformity of the adhesive spraying, thereby improving the uniformity of the mixing between the adhesive and the grains.

[0034] As a preferred structure, Figure 2 and Figure 6 As shown, the material drop pipe 13 is detachably connected to the top of the upper cavity of the mixing barrel 2. Specifically, the material drop pipe 13 and the top of the upper cavity of the mixing barrel 2 can be connected by flange connection, clamp connection or other detachable connection methods, which is convenient for disassembly and cleaning of the premixing barrel 1, the mixing barrel 2, the stirring body 3 and other components, thereby improving the convenience of cleaning the device.

[0035] When the grains sprayed with adhesive enter the annular cavity formed between the mixing barrel 2 and the stirring body 3, the grains have a certain viscosity due to the presence of the adhesive. When the stirring body 3 rotates, the grains may move too slowly in the annular cavity, which reduces the production efficiency. Fig. 9As shown, the upper cone and the lower cone of the stirring body 3 are provided with a plurality of second guide grooves 31 which are evenly arranged along the circumference of the stirring body 3. The paths of the second guide grooves 31 are arc-shaped and convex to the rotation direction of the stirring body 3. When the stirring body 3 rotates, the second guide grooves 31 on the upper cone will bring the grains into the upper end of the annular cavity, and move the grains along the cavity while mixing; when the grains enter the middle of the annular cavity, the second guide grooves 31 on the lower cone will bring the grains into the lower end of the annular cavity, and move the grains along the cavity toward the discharge pipe 21 while mixing. By setting the second guide grooves 31, the speed of discharging the grains can be effectively increased while ensuring the uniformity of mixing, thereby improving the mixing efficiency of the mixing device.

[0036] Example 2 As a further implementation of the above embodiment 1, Figure 5 and Figure 8 As shown, the discharge hole 142 is a strip hole, and its length is adapted to the radius of the partition plate 14. Each first stirring shaft 41 is arranged perpendicular to the axis of the hollow shaft 4. The first stirring shafts 41 in each group are evenly arranged around the axis of the hollow shaft 4, and the number is consistent with the number of the discharge holes 142. The length and width of the first stirring shafts 41 are respectively adapted to the length and width of the discharge hole 142, and the projection contours of any two adjacent groups of first stirring shafts 41 along the axis of the hollow shaft 4 do not overlap; each second stirring shaft 42 is arranged perpendicular to the axis of the hollow shaft 4, and there are multiple second stirring shafts 42 in each group and they are evenly arranged around the axis of the hollow shaft 4, and the projection contours of any two adjacent groups of second stirring shafts 42 along the axis of the hollow shaft 4 do not overlap. When in use, the length of the discharge hole 142 is adapted to the radius of the partition plate 14. When a group of first stirring shafts 41 close to the partition plate 14 rotates, the first stirring shafts 41 can push the grain particles gathered from the edge to the middle of the partition plate 14 into the discharge hole 142, which can effectively avoid the problem of grain particles accumulating at the edge of the partition plate 14 and cannot be pushed into the discharge hole 142, thereby ensuring the first-in-first-out function of the mixing device.

[0037] Example 3 As a further implementation of the above embodiment 1, Figure 7As shown, a stirring chamber 22 is formed in the middle of the mixing barrel 2 along its circumference, the middle of the stirring body 3 is cylindrical, and a group of third stirring shafts 32 are provided in the middle of the stirring body 3, wherein there are six third stirring shafts 32 and they are evenly arranged around the axis of the stirring body 3, and the axes of the third stirring shafts 32 are coplanar and perpendicular to the axis of the stirring body 3; two groups of fourth stirring shafts 23 are provided on the wall of the stirring chamber 22 and are evenly arranged along the axis of the mixing barrel 2, and there are six fourth stirring shafts 23 in each group and they are evenly arranged along the circumference of the stirring chamber 22, and the axes of the fourth stirring shafts 23 are coplanar and perpendicular to the axis of the mixing barrel 2, and the projections of the fourth stirring shafts 23 of each group along the axis of the mixing barrel 2 are coincident; each group of the fourth stirring shafts 23 is arranged with one group of the third stirring shafts 32 at intervals, and accordingly, the distance between the fourth stirring shafts 23 and the third stirring shafts 32 along the axis of the mixing barrel 2 should be reasonably set to avoid the fourth stirring shafts 23 and the third stirring shafts 32 being too close, thereby generating a shear effect on the grain particles. When used, the grains enter the stirring chamber 22 after entering the annular cavity, and are further stirred and mixed under the action of the third stirring shaft 32 and the fourth stirring shaft 23, and then enter the discharge pipe 21 through the annular cavity for discharge. The setting of the stirring chamber 22, the third stirring shaft 32 and the fourth stirring shaft 23 further improves the mixing uniformity of the grains sprayed with the adhesive.

[0038] Example 4 As a further implementation of the above implementation 1, Figure 1 and Figure 2 As shown, a mounting plate 7 is parallelly arranged on the top of the premixing barrel 1, and support rods 71 ​​are vertically arranged at the four corners of the mounting plate 7. Three storage boxes 72 are arranged above the mounting plate 7 for storing three different types of grains. The storage boxes 72 are respectively connected to the corresponding feed holes 12 through feeding pipes 73, and can continuously transport grains to the premixing barrel 1. A liquid storage tank 74 is arranged above the mounting plate 7 for transporting slurry to the liquid storage pipe 5. Fig.10 As shown, a first motor 75 is also provided above the mounting plate 7, and its driving end passes through the mounting plate 7 and is coaxially connected to a driving gear 76. A driven gear 43 is coaxially provided on the upper part of the hollow shaft 4, and the driven gear 43 is meshed with the driving gear 76. A support ring 77 is sleeved on the outer side of the premixing barrel 1 and the drop tube 13, and four support frames 78 are connected to the peripheral side of the support ring 77. The other ends of the support frames 78 are respectively connected to the corresponding support rods 71. A second motor 79 is provided below the mixing barrel 2, and its driving end is coaxially connected to the bottom of the stirring body 3. By arranging the mounting plate 7, the support rod 71, the support ring 77 and other components, the installation structure of the mixing device can be optimized, and the stability of the operation of the mixing device can be effectively improved.

[0039] Specifically, Figure 7As shown, the interior of the stirring body 3 is hollow, which can effectively reduce the weight of the stirring body 3 and reduce the load of the second motor 79.

[0040] As another preferred structure, in order to avoid affecting the material discharge from the discharge pipe 21, the hollow shaft 4 and the liquid storage tube 5 can also be configured as an integrated structure, and the stirring body 3 can be disposed at the lower end of the liquid storage tube 5. In this way, the same driving source can be used to simultaneously drive the hollow shaft 4 and the stirring body 3 to rotate.

[0041] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.

Claims

1. A cereal grain mixing device, characterized in that: include: A premixing barrel (1) is provided with a feed hole (12) at the top, a drop pipe (13) with a smaller diameter is coaxially provided at the bottom, a partition plate (14) is provided in the middle section of the premixing barrel (1), and a discharge hole (142) is provided on the partition plate (14); The mixing barrel (2) has an upper cavity and a lower cavity which are connected to each other, and the upper cavity and the lower cavity are both conical structures, and the cone bottoms are arranged opposite to each other. The lower end of the mixing barrel (2) is provided with a discharge pipe (21) which is connected to the lower cavity, and the lower end of the discharge pipe (13) is inserted into the upper cavity. The stirring body (3) is coaxially arranged inside the mixing barrel (2), and comprises an upper cone and a lower cone. There are annular cavities between the outer wall of the upper cone and the inner wall of the upper cavity, and between the outer wall of the lower cone and the inner wall of the lower cavity. The stirring body (3) is arranged to rotate around its own axis. A hollow shaft (4) is coaxially inserted into the premixing barrel (1) and is rotatably arranged around its own axis. A plurality of groups of first stirring shafts (41) and second stirring shafts (42) are evenly arranged along the axis of the hollow shaft (4). The first stirring shafts (41) are located above the material separator (14). A group of first stirring shafts (41) close to the material separator (14) is spaced a predetermined distance from the top of the material separator (14). The shape of the first stirring shaft (41) matches the shape of the discharge hole (142). The second stirring shaft (42) is located below the material separator (14). A liquid storage tube (5) is coaxially arranged inside the hollow shaft (4), and a spray hole (51) is circumferentially formed at the lower end of the liquid storage tube (5), and the spray holes (51) all protrude from the lower end of the hollow shaft (4); The material spreading mechanism (6) is arranged on the hollow shaft (4) in the material dropping pipe (13) and is located above the spray hole (51), and is used to make the granular material fall evenly along the circumference of the spray hole (51).

2. A grain mixing device according to claim 1, characterized in that: The material spreading mechanism (6) comprises a rotating column (61) arranged on the hollow shaft (4). The rotating column (61) is a cylinder, and its axis is arranged to coincide with the axis of the hollow shaft (4). The rotating column (61) is located in the material dropping pipe (13) and above the spray hole (51). Its top is a conical surface with the top of the cone facing upward. There is an annular gap between the rotating column (61) and the inner wall of the material dropping pipe (13) for making the material drop evenly along the circumference.

3. A grain mixing device according to claim 2, characterized in that: A plurality of first guide grooves (62) are provided on the circumference of the rotating column (61) along the axial direction, and the first guide grooves (62) are evenly arranged along the circumference of the rotating column (61).

4. A cereal grain mixing device according to claim 1, characterized in that: The discharge hole (142) is a strip hole, each first stirring shaft (41) is arranged perpendicular to the axis of the hollow shaft (4), the first stirring shafts (41) in each group are evenly arranged around the axis of the hollow shaft (4), and the number is consistent with the number of the discharge holes (142), the length and width of the first stirring shafts (41) are respectively adapted to the length and width of the discharge holes (142), and the projection contours of any two adjacent groups of first stirring shafts (41) along the axis of the hollow shaft (4) do not overlap; each second stirring shaft (42) is arranged perpendicular to the axis of the hollow shaft (4), there are multiple second stirring shafts (42) in each group and they are evenly arranged around the axis of the hollow shaft (4), and the projection contours of any two adjacent groups of second stirring shafts (42) along the axis of the hollow shaft (4) do not overlap.

5. A grain mixing device according to claim 1, characterized in that: The middle part of the mixing barrel (2) is protruded along the circumference thereof to form a stirring chamber (22); the middle part of the stirring body (3) is cylindrical; a plurality of groups of third stirring shafts (32) are arranged evenly along the axis in the middle part of the stirring body (3); each group includes a plurality of third stirring shafts (32) evenly arranged around the axis of the stirring body (3); the axes of the third stirring shafts (32) are coplanar and perpendicularly intersect the axis of the stirring body (3); and the projections of the third stirring shafts (32) of each group along the axis of the stirring body (3) overlap.

6. A grain mixing device according to claim 5, characterized in that: A plurality of groups of fourth stirring shafts (23) are arranged evenly along the axis on the wall of the stirring chamber (22), and each group includes a plurality of fourth stirring shafts (23) evenly arranged along the circumference of the stirring chamber (22). The axes of the fourth stirring shafts (23) are coplanar and perpendicularly intersect the axis of the mixing barrel (2). The projections of the fourth stirring shafts (23) of each group along the axis of the mixing barrel (2) overlap. Each group of fourth stirring shafts (23) is arranged with one group of third stirring shafts (32) between them.

7. A grain mixing device according to claim 1, characterized in that: The upper cone and the lower cone of the stirring body (3) are provided with a plurality of second guide grooves (31) evenly arranged along the circumference of the stirring body (3); the paths of the second guide grooves (31) are in the form of arcs and convex toward the rotation direction of the stirring body (3).

8. A grain mixing device according to claim 1, characterized in that: A mounting plate (7) is parallelly arranged on the top of the premixing barrel (1), support rods (71) are vertically arranged at the four corners of the mounting plate (7), a plurality of material storage boxes (72) are arranged above the mounting plate (7), the material storage boxes (72) are respectively connected to the corresponding material feeding holes (12) through feeding pipes (73), a liquid storage box (74) is arranged above the mounting plate (7) for conveying slurry to the liquid storage pipe (5), a first motor (75) is also arranged above the mounting plate (7), a driving end of which passes through the mounting plate (7) and is coaxially connected to a driving gear (76), a driven gear (43) is coaxially arranged on the upper part of the hollow shaft (4), and the driven gear (43) is meshed with the driving gear (76), a support ring (77) is sleeved on the outer side of the top of the premixing barrel (1) and the upper cavity, four support frames (78) are connected to the peripheral side of the support ring (77), and the other ends of the support frames (78) are respectively connected to the corresponding support rods (71).

9. A grain mixing device according to claim 1, characterized in that: A second motor (79) is provided below the mixing barrel (2), and a driving end of the second motor (79) is coaxially connected to the bottom of the stirring body (3).

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