Spreading device

Abstract

This invention relates to the field of food production technology, specifically to a material dispensing device, comprising: a frame; a hopper mounted on the frame, suitable for storing materials, with several mounting through holes on the bottom wall of the hopper; an air blowing chamber located on the lower side of the hopper; an air blowing device adapted to blow air into the air blowing chamber; a guide shaft with a material storage trough on it, the guide shaft being vertically movably positioned within the mounting through holes, having a first position where the material storage trough is located within the hopper and a second position where the material storage trough is located within the air blowing chamber; and a drive unit connected to the guide shaft, capable of driving the guide shaft to move vertically. When materials need to be added to the product, the drive unit drives the guide shaft to descend to the second position, and the air blowing device blows air into the air blowing chamber, creating a vortex airflow within the air blowing chamber, thereby blowing out the material from the material storage trough. During its fall, the blown material is dispersed by the vortex airflow, thus achieving uniform dispersion on the surface of the product.

Description

Technical Field

[0001] This invention relates to the field of food production technology, and more specifically to a spreading device. Background Technology

[0002] Currently, most of the powder or granulation devices used in production employ pneumatic vibration, plate-type, or spoon-shaped structures for granulation. The principle of these granulation or powder dispensing devices is to quantitatively remove granular or powdery materials and then use the material's own gravity to drop them onto the product surface. Often, these materials are in a clump-like state and cannot be evenly dispersed onto the product surface. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the existing material spreading device that cannot evenly disperse the material onto the product, thereby providing a material spreading device that can evenly disperse the material onto the product.

[0004] To solve the above-mentioned technical problems, the present invention provides a material spreading device, comprising: a frame; a hopper disposed on the frame, the hopper being adapted to store material, and the bottom wall of the hopper having a plurality of mounting through holes; an air blowing chamber disposed on the lower side of the hopper; an air blowing device adapted to blow air into the air blowing chamber; a guide shaft having a material storage groove disposed on the guide shaft, the guide shaft being vertically and vertically disposed within the mounting through holes, having a first position in which the material storage groove is located within the hopper and a second position in which the material storage groove is located within the air blowing chamber; and a drive unit connected to the guide shaft, capable of driving the guide shaft to move vertically.

[0005] Optionally, the storage tank is a plurality of annular grooves coaxial with the guide shaft.

[0006] Optionally, the annular grooves are provided in multiple ways from top to bottom.

[0007] Optionally, the air blowing device includes a compressed air source and a plurality of air blowing pipes connected to the compressed air source, wherein the angle between the tangent of the air outlet end of the air blowing pipe to the inner wall of the air blowing chamber and the air blowing pipe is A, where 5°≤A≤30°.

[0008] Optionally, the air blowing chamber includes a first chamber and a second chamber located at the lower end of the first chamber. The air blowing pipe is located on the first chamber. The wall of the second chamber is provided with a plurality of mesh holes, which are suitable for airflow but not for material passage.

[0009] Optionally, a positioning structure is connected to the outside of the air blowing chamber, the positioning structure being used to align the air blowing chamber with the container holding the product.

[0010] Optionally, the positioning structure is a positioning sleeve, which surrounds the outside of the second cavity and is adapted to press against the top of the container holding the product.

[0011] Optionally, the lower end of the positioning sleeve is an upwardly concave arc surface.

[0012] Optionally, there is a gap between the positioning sleeve and the second cavity, and the positioning sleeve and the second cavity are connected by a first hollow bracket.

[0013] Optionally, the positioning sleeve and the second cavity are further connected by a second hollow bracket, and the first hollow bracket, the second hollow bracket, the positioning sleeve and the second cavity together form an annular hollow cavity.

[0014] The technical solution of this invention has the following advantages:

[0015] The material dispensing device provided by this invention, when the guide shaft is in the first position, has a storage trough on the guide shaft located inside the hopper, allowing material to be stored in the storage trough. When material needs to be added to the product, the drive unit drives the guide shaft to descend to the second position, and the air blowing device blows air into the air blowing chamber, creating a vortex airflow that blows the material out of the storage trough. The blown material, influenced by the vortex airflow, falls evenly, thus dispersing evenly on the product surface, improving the product's appearance and visual appeal. After adding material to a product, the drive unit drives the guide shaft to rise back to the first position, and the storage trough on the guide shaft re-stores material. This process is repeated, allowing for the uniform addition of material to products sequentially. Furthermore, the size of the storage trough can be designed according to the amount of material to be added each time, achieving quantitative material addition. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the material spreading device provided in an embodiment of the present invention when the guide shaft is in the second position;

[0018] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0019] Figure 3 for Figure 1 The shown is a top sectional view of the spreading device at the annular groove.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Frame; 2. Hopper; 3. Air blowing chamber; 301. First chamber; 302. Second chamber; 3021. Mesh; 4. Guide shaft; 401. Annular groove; 5. Drive unit; 6. Air blowing pipe; 7. Positioning sleeve; 701. Arc surface; 702. First sleeve section; 703. Second sleeve section; 8. First hollow support; 9. Second hollow support; 10. Container. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Example

[0027] Currently, most of the powder or granulation devices used in production employ pneumatic vibration, plate-type, or spoon-shaped structures for granulation. The principle of these granulation or powder dispensing devices is to quantitatively remove granular or powdery materials and then use the material's own gravity to drop them onto the product surface. Often, these materials are in a clump-like state and cannot be evenly dispersed onto the product surface.

[0028] Therefore, this embodiment provides a material spreading device that can evenly disperse materials onto a product.

[0029] In one implementation, such as Figure 1 and Figure 2 As shown, the material spreading device includes a frame 1, a hopper 2, an air blowing chamber 3, an air blowing device, a guide shaft 4, and a drive unit 5.

[0030] The frame 1 is suitable for being fixedly installed on the product filling production equipment; the hopper 2 is installed on the frame 1 and is suitable for storing materials. The bottom wall of the hopper 2 is provided with several mounting through holes. In this embodiment, the material is powder or granular material; the air blowing chamber 3 is located on the lower side of the hopper 2; the air blowing device is suitable for blowing air into the air blowing chamber 3; the guide shaft 4 is provided with a material storage tank and is vertically and vertically installed in the mounting through holes, having a first position in which the material storage tank is located in the hopper 2 and a second position in which the material storage tank is located in the air blowing chamber 3; the drive unit 5 is connected to the guide shaft 4 and can drive the guide shaft 4 to move vertically.

[0031] In this embodiment, when the guide shaft 4 is in the first position, the storage trough on the guide shaft 4 is located inside the hopper 2, allowing material to be stored in the storage trough. When material needs to be added to the product, the drive unit 5 drives the guide shaft 4 to descend to the second position, and the air blowing device blows air into the air blowing chamber 3, creating a vortex airflow within the air blowing chamber 3. This blows the material out of the storage trough. During its fall, the blown material is dispersed by the vortex airflow, thus evenly dispersing it on the product surface, improving the product's surface appearance and visual appeal. After adding material to a product, the drive unit 5 drives the guide shaft 4 to rise back to the first position, and the storage trough on the guide shaft 4 re-stores material. This process is repeated, allowing for the even addition of material to the product sequentially. Furthermore, the size of the storage trough can be designed according to the amount of material to be added each time, enabling quantitative material addition.

[0032] Specifically, when the product is ice cream, the sprinkler can attach a uniformly distributed layer of granules to the surface of the ice cream, improving the appearance quality and visual appeal of the product.

[0033] Based on the above embodiments, in a preferred embodiment, the storage tank is a plurality of annular grooves 401 coaxial with the guide shaft 4. In this embodiment, the storage tank is annular grooves 401, which can better store materials and ensure that the materials are evenly dispersed in the blowing chamber 3 during air blowing. In other alternative embodiments, the storage tank can be a spiral groove.

[0034] Based on the above embodiments, in a preferred embodiment, such as Figure 1 As shown, multiple annular grooves 401 are provided from top to bottom. In this embodiment, the drive unit 5 can control all annular grooves 401 to enter the air blowing chamber 3, adding material from all annular grooves 401 to the product each time. Alternatively, it can control the guide shaft 4 to descend only the height of one annular groove 401 at a time, adding material from only one annular groove 401 to the product each time. Therefore, by providing multiple annular grooves 401 from top to bottom, different material addition requirements can be met, thus broadening the applicability. Of course, in other alternative embodiments, the number of annular grooves 401 can be set to only one.

[0035] Based on the above embodiments, in a preferred embodiment, such as Figure 3 As shown, the air blowing device includes a compressed air source and several air blowing pipes 6 connected to the compressed air source. The angle between the tangent of the outlet end of the air blowing pipe 6 on the inner wall of the air blowing chamber 3 and the air blowing pipe 6 is A, where 5°≤A≤30°. In this embodiment, the gas blown into the air blowing chamber 3 is compressed gas with a certain pressure, and the angle between the tangent of the outlet end of the air blowing pipe 6 on the inner wall of the air blowing chamber 3 and the air blowing pipe 6 is between 5° and 30°, which can ensure that the material effectively forms a vortex-like dispersion state within the air blowing chamber 3.

[0036] Figure 3 Only one air blowing pipe 6 is shown in the figure. Of course, in other alternative embodiments, multiple air blowing pipes 6 can be evenly arranged along the circumference of the air blowing chamber 3.

[0037] Based on the above embodiments, in a preferred embodiment, the air blowing chamber 3 includes a first chamber 301 and a second chamber 302 located at the lower end of the first chamber 301. The air blowing pipe 6 is located on the first chamber 301. The wall of the second chamber 302 is provided with a plurality of mesh holes 3021, which are suitable for airflow but not for material passage. In this embodiment, by providing a plurality of mesh holes 3021 on the wall of the second chamber 302, the air pressure can be released within the second chamber 302, allowing the material to fall onto the product in a free-fall state, avoiding excessive air blowing pressure that would cause the material to splash along the airflow direction, and simultaneously preventing the material from flying out.

[0038] In a preferred embodiment, the wall of the second cavity 302 is an overall mesh structure, which can quickly release the air pressure in the second cavity 302, so that the material falls onto the product in a free fall state.

[0039] Based on the above embodiments, in a preferred embodiment, a positioning structure is connected to the outer side of the air blowing chamber 3. The positioning structure is used to align the air blowing chamber 3 with the container 10 containing the product. In this embodiment, the positioning structure ensures that the material falls evenly onto the product.

[0040] Based on the above embodiments, in a preferred embodiment, the positioning structure is a positioning sleeve 7, which surrounds the outside of the second cavity 302 and is adapted to press against the top of the container 10 containing the product. In this embodiment, it is only necessary to press the positioning sleeve 7 against the top of the container 10 containing the product; the height of the positioning sleeve 7 is relatively short, and the positioning sleeve 7 and the container 10 are easily separated. In an alternative embodiment, the positioning structure can be a positioning sleeve, which can be fitted over the container 10.

[0041] Based on the above embodiments, in a preferred embodiment, the lower end of the positioning sleeve 7 is an upwardly concave arc surface 701. In this embodiment, by providing an arc surface 701 on the lower end surface of the positioning sleeve 7, it is easier for the positioning sleeve 7 to be supported on the top of the container 10.

[0042] like Figure 1 As shown, the positioning sleeve 7 includes a first sleeve section 702 and a second sleeve section 703 disposed at the lower end of the first sleeve section 702. The arc surface 701 is disposed at the bottom end of the second sleeve section 703. The wall thickness of the second sleeve section 703 is greater than the wall thickness of the first sleeve section 702, so that the positioning sleeve 7 can be supported on the top of the container 10.

[0043] Further reference Figure 1 The lower end of the positioning sleeve 7 is lower than the lower end of the air blowing chamber 3, which ensures that the material is in a free fall posture before entering the container 10, thereby ensuring that the material falls evenly onto the product.

[0044] Further reference Figure 1 The container 10 for holding the product has a cup-shaped structure.

[0045] Based on the above embodiments, in a preferred embodiment, there is a gap between the positioning sleeve 7 and the second cavity 302, and the positioning sleeve 7 and the second cavity 302 are connected by a first perforated bracket 8. In this embodiment, the connection between the positioning sleeve 7 and the second cavity 302 via the first perforated bracket 8 allows gas in the second cavity 302 to flow out through the mesh 3021 on the second cavity 302 and the perforated holes on the first perforated bracket 8, quickly depressurizing the second cavity 302. This prevents vortex airflow within the second cavity 302, allowing the material to fall onto the product in a free-fall state, avoiding excessive blowing pressure that could cause material to splash along the airflow direction.

[0046] Based on the above embodiments, in a preferred embodiment, the positioning sleeve 7 and the second cavity 302 are further connected by a second hollow bracket 9. The first hollow bracket 8, the second hollow bracket 9, the positioning sleeve 7, and the second cavity 302 together form an annular hollow cavity. In this embodiment, the annular hollow cavity facilitates the rapid release of air pressure within the second cavity 302. By releasing the gas pressure, the material can fall onto the product surface in a free-fall state.

[0047] Based on the above embodiments, in a preferred embodiment, the drive unit 5 is a drive cylinder. In other alternative embodiments, the drive unit 5 may include a drive motor, a gear and rack mechanism, wherein the gear is connected to the output shaft of the drive motor, the rack is meshed with the gear, and the guide shaft 4 is connected to the rack.

[0048] In this embodiment, the material spreading device operates as follows: When the guide shaft 4 is in the first position, the annular groove 401 on the guide shaft 4 is located inside the hopper 2, allowing material to be stored within the annular groove 401. When material needs to be added to the product, the drive unit 5 drives the guide shaft 4 to descend to the second position, and the air blowing device blows air into the first cavity 301, creating a vortex airflow within the first cavity 301. This blows the material out of the annular groove 401. During its descent, the blown material is dispersed by the vortex airflow. After falling into the second cavity 302, the material is no longer affected by the vortex airflow and can be evenly dispersed on the surface of the product in a free-fall state. After adding material to a product, the drive unit 5 drives the guide shaft 4 to rise back to the first position, and the annular groove 401 on the guide shaft 4 re-stores material. This process is repeated, allowing for the uniform addition of material to products sequentially.

[0049] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A material spreading device, characterized in that, include: Rack (1); A hopper (2) is provided on the frame (1), the hopper (2) is suitable for storing materials, and the bottom wall of the hopper (2) is provided with several mounting through holes; An air blowing chamber (3) is located on the lower side of the hopper (2); An air blowing device is suitable for blowing air into the air blowing chamber (3). The air blowing device includes a compressed air source and a plurality of air blowing pipes (6) connected to the compressed air source. The angle between the tangent of the air outlet end of the air blowing pipe (6) to the inner wall of the air blowing chamber (3) and the air blowing pipe (6) is A, where 5°≤A≤30°. A guide shaft (4) is provided with a storage trough. The guide shaft (4) can be raised and lowered in the mounting through hole and has a first position in which the storage trough is located in the hopper (2) and a second position in which the storage trough is located in the air blowing chamber (3). The drive unit (5) is connected to the guide shaft (4) and is capable of driving the guide shaft (4) to move up and down. The air blowing chamber (3) includes a first chamber (301) and a second chamber (302) located at the lower end of the first chamber (301). The air blowing pipe (6) is located on the first chamber (301). The wall of the second chamber (302) is provided with a plurality of mesh holes (3021). The mesh holes (3021) are suitable for airflow but not for material flow.

2. The spreading device according to claim 1, characterized in that, The storage tank is a plurality of annular grooves (401) coaxial with the guide shaft (4).

3. The spreading device according to claim 2, characterized in that, The annular groove (401) has multiple grooves from top to bottom.

4. The spreading device according to claim 1, characterized in that, The outer side of the air blowing chamber (3) is connected to a positioning structure, which is used to align the air blowing chamber (3) with the container (10) containing the product.

5. The spreading device according to claim 4, characterized in that, The positioning structure is a positioning sleeve (7), which surrounds the outside of the second cavity (302) and is adapted to press on the top of the container (10) containing the product.

6. The spreading device according to claim 5, characterized in that, The lower end of the positioning sleeve (7) is an upwardly concave arc surface (701).

7. The spreading device according to claim 5, characterized in that, There is a gap between the positioning sleeve (7) and the second cavity (302), and the positioning sleeve (7) and the second cavity (302) are connected by a first hollow bracket (8).

8. The spreading device according to claim 7, characterized in that, The positioning sleeve (7) and the second cavity (302) are also connected by a second hollow bracket (9). The first hollow bracket (8), the second hollow bracket (9), the positioning sleeve (7) and the second cavity (302) together form an annular hollow cavity.

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