Efficient premixing device

Abstract

The utility model discloses an efficient premixing device which is a three-dimensional mixing machine, the three-dimensional mixing machine comprises a machine case and a premixing tank, the premixing tank is rotatably mounted on one side of the machine case, and a first opening, a second opening, a first valve and a second valve are respectively arranged at two ends of the premixing tank, and the first valve and the second valve are used for opening or closing the openings; the stirring device further comprises a stirring mechanism, the stirring mechanism comprises a rotating shaft, at least two stirring pieces, positioning pressing blocks and limiting pieces, the rotating shaft is of a stepped column structure with the large middle and the two small ends, the two ends of each stirring piece are connected to the small end of the rotating shaft respectively, and the two ends of the rotating shaft are further provided with the positioning pressing blocks and the limiting pieces which are symmetrically arranged respectively; wherein the positioning pressing block is used for adjusting the mounting positions of the poking pieces in the circumferential direction, and the poking pieces are arranged at intervals; and the limiting piece is used for pressing the positioning pressing block. The utility model has the advantages that the structure is simple, the disassembly is convenient, the stirring efficiency of oat nutrition powder can be improved, and the cleaning of the premixing tank is not interfered.

Description

Technical Field

[0001] This utility model relates to the field of powder premixing technology, and in particular to a high-efficiency premixing device. Background Technology

[0002] A three-dimensional mixer is a type of mixer used for highly uniform mixing of powdered and granular materials in pharmaceutical, chemical, food, light industry, electronics, machinery, mining and metallurgy, defense industries, and research institutions. During operation, the multi-directional rotation of the mixing drum accelerates the flow and diffusion of various materials, while avoiding the material segregation and accumulation caused by centrifugal force in conventional mixers. This ensures thorough mixing without dead zones and effectively guarantees the optimal quality of the mixed materials.

[0003] Several patents related to three-dimensional mixers are disclosed in the prior art, and there are also many records of three-dimensional mixers that include stirring devices. For example, patents CN222468894U, CN221815992U, and CN219596417U disclose stirring devices with different structures. However, these are not suitable for mixing oat nutritional powder, as the stirring device will interfere with cleaning the premix tank.

[0004] Currently, there are several drawbacks to using a three-dimensional mixer to mix oat powder:

[0005] 1. The premix tank is hollow and lacks an auxiliary stirring device, resulting in low mixing efficiency of oat powder;

[0006] 2. After each mixing cycle, the inner wall of the premix tank needs to be cleaned to prevent cross-contamination of flavors between the two batches of oat powder, which could affect product quality. The production workshop uses a dry process, making water rinsing unsuitable for cleaning. Therefore, the inner wall of the premix tank is typically cleaned by blowing air or wiping with an alcohol cloth. Installing a stirring device inside the premix tank would increase the difficulty of cleaning, creating a conflict between stirring efficiency and premix tank cleaning efficiency.

[0007] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0008] The main purpose of this utility model is to propose a high-efficiency premixing device that is simple in structure, easy to disassemble, and can not only improve the mixing efficiency of oat nutrient powder, but also does not interfere with the cleaning of the premixing tank.

[0009] Therefore, this utility model proposes a high-efficiency premixing device.

[0010] Preferably, the present invention may also have the following technical features:

[0011] A high-efficiency premixing device is a three-dimensional mixer, comprising a chassis and a premixing tank. The premixing tank is rotatably mounted on one side of the chassis, with a first opening and a second opening at its two ends, and a first valve and a second valve for opening or closing the openings. The device also includes a stirring mechanism comprising a rotating shaft, paddles, positioning blocks, and limiting members. The rotating shaft has a stepped structure, wider in the middle and narrower at both ends, and has at least two paddles. The two ends of each paddle are connected to the smaller end of the rotating shaft. The two ends of the rotating shaft also have symmetrically arranged positioning blocks and limiting members. The positioning blocks adjust the circumferential position of each paddle and space it at intervals. The limiting members are used to press the positioning blocks.

[0012] Furthermore, the paddle is an arc-shaped stainless steel sheet with elastic return properties.

[0013] Furthermore, the two ends of the rotating shaft are provided with axially extending flat sections, and the positioning pressure block is provided with mounting holes that cooperate with the flat section rotating shaft.

[0014] Furthermore, the small ends of both ends of the rotating shaft are provided with external threads, and the limiting component is a nut.

[0015] Furthermore, the positioning block is provided with a connecting structure for connecting the paddle, which restricts the circumferential rotation of the paddle.

[0016] Furthermore, the joining structure consists of several guide grooves formed radially along the positioning block.

[0017] Furthermore, the joining structure consists of several limiting blocks installed on the side of the positioning pressure block and spaced at fixed intervals, with two limiting blocks forming a group, and the paddle positioned between the two limiting blocks.

[0018] Furthermore, the paddle is an annular piece with positioning holes at its two opposite vertices, and the two positioning holes are inserted from both ends of the rotating shaft.

[0019] Furthermore, springs are provided at both ends of the rotating shaft. One end of the spring abuts against the large end face of the middle part of the rotating shaft, and the other end abuts against the side of the positioning block.

[0020] Shims are installed between the large end face of the spring and the pivot shaft and between the spring and the positioning block to improve the assembly stability of the spring.

[0021] The advantages of this utility model compared with the prior art include: using a stainless steel sheet as the main tool for stirring oat nutrient powder; and installing the stirring mechanism in a detachable manner. After the stirring and mixing operation is completed, the stirring mechanism can be removed for material discharge and premix tank cleaning operations (for example, loosening the limiting piece so that the paddle can extend along the axis of the rotating shaft, thereby reducing the curvature of the paddle and allowing the stirring mechanism to be removed from the premix tank). This improves mixing efficiency while also ensuring the cleanliness of the premix tank. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an existing three-dimensional mixer structure.

[0023] Figure 2 This is a schematic diagram of the premix tank structure of this utility model.

[0024] Figure 3 This is a schematic diagram of the stirring mechanism of this utility model.

[0025] Figure 4 This is a front view of one embodiment of the positioning block of this utility model.

[0026] Figure 5 yes Figure 4 Side view.

[0027] Figure 6 This is a structural diagram of another embodiment of the positioning block of this utility model. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0029] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0030] like Figures 2-6The diagram illustrates a high-efficiency premixing device, using premixed oat flour as an example. The structure and use of this device are described below. The premixing device is a three-dimensional mixer, comprising a housing 1 and a premixing tank 2. The premixing tank 2 is rotatably mounted on one side of the housing 1, with a first opening and a second opening at each end, and a first valve 3 and a second valve 4 for opening or closing the openings. The stirring mechanism includes a rotating shaft 46, paddles 41, positioning blocks 42, and limiting members 43. The rotating shaft 46 has a stepped structure, wider in the middle and narrower at both ends, and is equipped with at least two paddles 41. Each paddle 41 is an arc-shaped stainless steel sheet with elastic return properties, such as a spring. Both ends of the paddle 41 are connected to the small end of the rotating shaft 46. The rotating shaft 46 also has symmetrically arranged positioning blocks 42 and limiting members 43 at both ends. The positioning blocks 42 adjust the circumferential installation position of each paddle 41, allowing the paddles 41 to be spaced apart. The limiting members 43 are installed at the small end of the rotating shaft 46 to press the positioning blocks 42, preventing axial movement and circumferential rotation of the positioning blocks 42. The diameter of the first opening is smaller than that of the second opening. In this embodiment, during assembly, the paddles 41, positioning blocks 42, and limiting members 43 are pre-installed on the rotating shaft 46. Specifically, the paddles 41, positioning blocks 42, and limiting members 43 installed at the front end of the rotating shaft 46 are fixed in place. Then, the front end of the rotating shaft 46 is inserted into the premixing tank 2 and connected to the reserved hole of the first valve 3. During the process of installing the stirring mechanism into the premixing tank 2, the paddles 41 are subjected to the squeezing force of the second opening and move axially along the rear end of the rotating shaft 46, causing the paddles to... The curvature of the blade 41 decreases; after the front end of the rotating shaft 46 is installed in place, the position of the rear end of the blade 41 is adjusted using the limiting part 43 at the rear end of the rotating shaft 46. During the adjustment of the position of the blade 41, the curvature of the blade 41 gradually increases until the limiting part 43 is installed in place; finally, the second valve 4 is closed, and the rear end of the rotating shaft 46 and the reserved hole of the second valve 4 are aligned, so that after the second valve 4 is assembled in place, the rotating shaft 46 is clamped in the reserved hole, or the rotating shaft 46 and the reserved hole are rotatably connected. Stainless steel blades are used as the main tool for stirring and breaking up oat nutrient powder. At the same time, the stirring mechanism is installed in a detachable manner. After the stirring and mixing operation is completed, the stirring mechanism can be removed for material discharge and cleaning of the inside of the premix tank 2 (for example, loosening the limiting part 43 so that the blade 41 can extend along the axial direction of the rotating shaft 46, thereby reducing the curvature of the blade 41, so that the stirring mechanism can be removed from the premix tank 2). This improves the mixing efficiency while also ensuring the cleanliness of the inside of the premix tank 2. Alternatively, a spring plate can be used as a lever 41. By utilizing the characteristic that the spring plate can deform and then return to its original shape, the entire mixing mechanism can be removed from the premix tank 2.

[0031] In a preferred embodiment, both small ends of the rotating shaft 46 are provided with external threads, and the limiting member 43 is a nut for easy installation. More specific embodiments, such as... Figures 4-6The positioning block 42 is provided with a connecting structure for connecting the lever 41, which restricts the circumferential rotation of the lever 41. For example, the connecting structure is a plurality of guide grooves radially formed along the positioning block 42; in other examples, the connecting structure can also be a plurality of limiting blocks (such as limiting cylinders 421 perpendicular to the positioning block, or limiting square posts 422 extending along the side of the positioning block 42) welded at intervals on the side of the positioning block 42 (the surface in contact with the lever), with two limiting blocks forming a group, and the lever 41 positioned between two limiting blocks. Whether it is a guide groove, a limiting cylinder 421, or a limiting square post 422, the lever 41 can be precisely inserted, such as when the width of the guide groove is the same as the width of the lever 41, or when the distance between the two limiting cylinders 421 (limiting square posts 422) is equal to the width of the lever 41. Preferably, a gasket 44 is also provided between the limiting member 43 and the positioning block 42.

[0032] In the above-described scheme, using a limiting square post 422 to connect the lever 41 is more advantageous. This not only ensures the strength of the positioning block 42 but also effectively restricts the circumferential rotation of the lever 41. The two ends of the rotating shaft 46 also have axially extending flat sections. The positioning block 42 has mounting holes 423, which slide and engage with the two ends of the rotating shaft 46. The structure of the mounting holes 423 corresponds to the flat sections, further restricting the rotation of the positioning block 42.

[0033] Preferably, the paddle 41 is an annular plate with positioning holes at its two opposite vertices, and the two positioning holes are inserted from both ends of the rotating shaft 46. When installing the paddle 41, it can be installed on the same side of the positioning block 42, or it can be installed on both sides of the positioning block 42. Using an annular plate paddle 41, two paddles 41 are installed on both sides of the positioning block 42, and the circular surfaces formed by the two paddles 41 are perpendicular to each other.

[0034] Furthermore, springs 45 are provided at both ends of the rotating shaft 46. One end of the spring 45 abuts against the large end face of the middle part of the rotating shaft 46, and the other end abuts against the side of the positioning block 42 (such as against the limiting block). The elastic deformation of the spring 45 improves assembly compatibility, so that after the limiting member 43 is installed in place, the spring 45 is compressed and deformed. More preferably, shims 44 are installed between the spring 45 and the large end face of the middle part of the rotating shaft 46, and between the spring 45 and the positioning block 42, to improve the assembly stability of the spring 45.

[0035] In the above embodiment, the added shim 44 is a flat shim. Through the contact between the shim 44 and the spring 45, the contact surface is wider, and the spring 45 is more stable during compression and deformation, and is less prone to slippage.

[0036] In other embodiments, to reduce structural modifications to the three-dimensional mixer, particularly to the first valve 3 and the second valve 4, such as reducing the need for pre-drilled holes in the first valve 3 and the second valve 4, a positioning end plug 31 is installed at the first and second openings. The positioning end plug 31 has a boss structure with a central hole; one end extends into the premixing tank 2, and the other end fits against the first and second opening ends to prevent the positioning end plug 31 from falling into the premixing tank 2. During assembly, the central hole can be used to replace the pre-drilled hole, reducing structural modifications to the three-dimensional mixer, offering wide applicability and high flexibility.

[0037] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

Claims

1. A high-efficiency premixing device, wherein the premixing device is a three-dimensional mixer, the three-dimensional mixer comprising a casing and a premixing tank, the premixing tank being rotatably mounted on one side of the casing, having openings at both ends and valves for opening or closing the openings; characterized in that, It also includes a stirring mechanism, which is detachably assembled in the premix tank. The stirring mechanism includes a rotating shaft, paddles, positioning blocks, and limiting members. The rotating shaft has a stepped structure that is larger in the middle and smaller at both ends, and is provided with at least two paddles. The two ends of the paddles are respectively connected to the smaller ends of the rotating shaft. The two ends of the rotating shaft are also provided with symmetrically arranged positioning blocks and limiting members. The positioning blocks adjust the installation position of each paddle in the circumferential direction and arrange the paddles at intervals. The limiting members are used to press the positioning blocks.

2. The high-efficiency premixing device as described in claim 1, characterized in that, The lever is an arc-shaped stainless steel plate with elastic return function.

3. The high-efficiency premixing device as described in claim 1, characterized in that, The two ends of the rotating shaft are also provided with axially extending flat sections, and the positioning pressure block is provided with mounting holes that cooperate with the flat section rotating shaft.

4. The high-efficiency premixing device as described in claim 1, characterized in that, Both ends of the rotating shaft are provided with external threads, and the limiting component is a nut.

5. The high-efficiency premixing device as described in claim 1, characterized in that, The positioning block is provided with a connecting structure for connecting the paddle, which restricts the circumferential rotation of the paddle.

6. The high-efficiency premixing device as described in claim 5, characterized in that, The joining structure consists of several guide grooves radially opened along the positioning block.

7. The high-efficiency premixing device as described in claim 5, characterized in that, The joining structure consists of several limiting blocks installed on the side of the positioning block and spaced at fixed intervals. Two limiting blocks form a group, and the paddle is located between the two limiting blocks.

8. The high-efficiency premixing device as described in claim 5, characterized in that, The paddle is a ring-shaped piece with positioning holes at its two opposite vertices. The two positioning holes are inserted from both ends of the rotating shaft.

9. The high-efficiency premixing device as described in claim 5, characterized in that, Springs are provided at both ends of the rotating shaft. One end of the spring abuts against the large end face of the middle part of the rotating shaft, and the other end abuts against the side of the positioning block.

10. The high-efficiency premixing device as described in claim 9, characterized in that, Shims are installed between the large end face of the spring and the pivot shaft and between the spring and the positioning block to improve the assembly stability of the spring.

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