Double-shaft stirring device for mixer

Abstract

The utility model discloses a double-shaft stirring device for a blender mixer, which relates to the technical field of stirring equipment and comprises a rack, stirring shafts are rotatably arranged on the rack side by side, one ends of the two stirring shafts are meshed with each other through a gear, stirring blade components are arranged on the stirring shafts, and the stirring blades are arranged on the rack. The stirring blade assembly comprises a forward scraping part, a stirring part and a reverse scraping part, the forward scraping part and the reverse scraping part are arranged at the positions, close to the two ends, of the stirring shaft respectively, the stirring part is arranged in the middle of the stirring shaft and comprises a plurality of stirring arms arranged on the stirring shaft around a shaft, stirring blades are arranged on the stirring arms, and the stirring blades are arranged on the stirring shaft. Each of the forward scraping part and the reverse scraping part comprises a scraping arm arranged on the stirring shaft, scraping blades are arranged on the scraping arms, and by optimizing the design and transmission mode of a stirring blade assembly, more efficient and uniform material mixing is achieved, and meanwhile the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring equipment, in particular to a double-shaft stirring device for a mixer. Background Art

[0002] Mixers are widely used in the chemical, food, and pharmaceutical industries. Their core function is to achieve uniform mixing of different materials. The mixer's stirring mechanism plays a crucial role in ensuring uniform mixing of materials and improving production efficiency. Traditional mixing mechanisms typically use a single-shaft design. While this design can achieve material mixing to a certain extent, it is not ideal when dealing with high-viscosity, easily agglomerated, or particulate materials. Furthermore, single-shaft mixing mechanisms often have difficulty avoiding the formation of dead corners near the stirring shaft during the mixing process, resulting in uneven mixing and affecting product quality.

[0003] To overcome these problems, some technicians have tried to introduce a dual-axis stirring design into the stirring mechanism. The dual-axis stirring mechanism can stir the material over a wider area through the relative rotation of the two stirring shafts, thereby improving the mixing effect. However, the existing dual-axis stirring mechanism still has certain shortcomings in structural design and stirring effect. For example, the configuration of the stirring blades is often relatively simple, which makes it difficult to fully adapt to the stirring requirements of different materials; at the same time, the transmission method between the stirring shafts may also lead to low stirring efficiency or high maintenance costs. Therefore, it is necessary to improve the existing dual-axis stirring mechanism to improve its stirring effect, adaptability and maintenance convenience. Utility Model Content

[0004] The purpose of the present invention is to provide a dual-shaft stirring device for a mixer to solve the problems existing in the prior art raised in the above background technology. By optimizing the design and transmission mode of the stirring blade assembly, it aims to achieve more efficient and uniform material mixing while reducing maintenance costs.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A double-shaft stirring device for a mixer, comprising a frame, stirring shafts are arranged on the frame to rotate side by side, one end of the two stirring shafts is meshed with each other through gears, a stirring blade assembly is provided on the stirring shaft, the stirring blade assembly includes a forward scraping part, a stirring part, and a reverse scraping part, the forward scraping part and the reverse scraping part are respectively close to the two ends of the stirring shaft, the stirring part is arranged in the middle of the stirring shaft, the stirring part includes a plurality of stirring arms arranged around the axis on the stirring shaft, the stirring arms are provided with stirring blades, the forward scraping part and the reverse scraping part both include scraping arms arranged on the stirring shaft, and the scraping arms are provided with scraping blades.

[0006] In order to further optimize the present invention, the following technical solutions may be preferably used:

[0007] Preferably, blade arm fixing seats are provided on the stirring shaft corresponding to the stirring arm and scraping arm positions, and the blade arm fixing seats include an arc sleeve 1 and an arc sleeve 2 that are interlocked with each other. The arc sleeve 1 and the arc sleeve 2 are interlocked and then sleeved on the stirring shaft.

[0008] Preferably, a blade arm isolation sleeve is provided between the two blade arm fixing seats corresponding to the stirring shaft.

[0009] Preferably, the cross section of the stirring shaft corresponding to the installation position of the stirring blade assembly is square, and the blade arm fixing seat and the blade arm isolation sleeve are provided with installation holes that match the stirring shaft.

[0010] Preferably, a first meshing gear plate and a second meshing gear plate are respectively provided at one end of the two stirring shafts, the first meshing gear plate is connected to the drive motor, a reducer is provided between the first meshing gear plate and the drive motor, and the two stirring shafts rotate in opposite directions.

[0011] Preferably, packing seals and bearing seats are provided on the frame at both ends of the stirring shaft.

[0012] Preferably, the opposite stirring blade assemblies on the two stirring shafts are staggered in the axial direction.

[0013] Preferably, a plurality of stirring blade arms are arranged on the rotating shaft in a spiral line, and the stirring blades are detachably arranged at the free ends of the stirring blade arms.

[0014] Compared with the prior art, the beneficial effects of the present invention are mainly reflected in the following aspects:

[0015] (1) Improved mixing efficiency and uniformity: Through the dual-shaft mixing design, the two mixing shafts rotate side by side on the frame and mesh with each other through gears at one end, so that the two mixing shafts rotate in opposite directions. This design not only expands the mixing range, but also allows the material to be sheared and squeezed from two different directions during the mixing process, thereby improving the mixing efficiency and uniformity.

[0016] (2) Optimize the design of the stirring blade assembly: The stirring blade assembly includes a forward scraping part, a stirring part, and a reverse scraping part. The rational arrangement of these parts on the stirring shaft allows the material to be stirred and scraped in all directions during the stirring process. The design of the forward scraping part and the reverse scraping part helps to eliminate the material dead corners near the stirring shaft and improve the mixing effect.

[0017] (3) Enhanced structural stability and durability: A blade arm isolation sleeve is installed between the two blade arm mounting brackets on the agitator shaft, which helps reduce friction and wear during the mixing process and improves the service life of the agitator mechanism. In addition, the cross-section of the agitator shaft corresponding to the mounting position of the stirring blade assembly is square, which cooperates with the mounting holes on the blade arm mounting bracket and the blade arm isolation sleeve to enhance the stability and durability of the structure.

[0018] (4): Reduce energy consumption and maintenance costs: By using a reducer in conjunction with a drive motor, energy consumption can be reduced while ensuring the mixing effect. In addition, multiple stirring blade arms are arranged in a spiral line on the rotating shaft, and the stirring blades are detachable, which not only helps to evenly mix the materials, but also facilitates subsequent maintenance and replacement.

[0019] (5): Improve production flexibility and adaptability: The design of the dual-shaft stirring mechanism enables it to adapt to different materials and process requirements. For example, the stirring blade assemblies on the two stirring shafts are staggered in the axial direction, and the arrangement of the stirring blades can be adjusted according to actual needs to meet the stirring requirements of different materials. In summary, this utility model patent improves the stirring efficiency, uniformity and structural stability by optimizing the design of the stirring mechanism, reduces energy consumption and maintenance costs, and enhances production flexibility and adaptability, bringing significant beneficial effects to the field of material mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the overall device;

[0021] Figure 2 It is the main view of the stirring mechanism;

[0022] Figure 3 Schematic diagram of the three-dimensional structure of the stirring mechanism;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the combined stirring arm of the utility model;

[0024] Figure 5 This is a front view of the combined stirring arm of the utility model;

[0025] Figure 6 This is a side view of the combined stirring arm of the present invention;

[0026] Figure 7 For the utility model Figure 5 A partial enlarged view of area A;

[0027] In the figure: 1-frame, 2-stirring shaft, 3-forward scraping part, 4-stirring part, 5-reverse scraping part; 6-driving motor, 7-reducer, 8-first meshing gear plate, 9-second meshing gear plate

[0028] 201-scraping arm, 202-scraping blade, 203-scraping part, 204-stirring part, 205-stirring arm, 206-stirring blade, 207-long waist hole, 208-positioning plate, 209-arc sleeve one, 210-arc sleeve two, 211-leaf arm isolation sleeve. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figure 1-7 The utility model provides an embodiment: a double-shaft stirring device for a mixer, comprising a frame 1, on which stirring shafts 2 are rotatably installed side by side, one end of the two stirring shafts 2 is meshed with each other through gears, and a specific meshing transmission method is that the meshing ends of the two stirring shafts are respectively installed with a first meshing gear plate 8 and a second meshing gear plate 9, wherein the first meshing gear plate is transmission-connected to a drive motor 6, and a reducer 7 is installed between the first meshing gear plate and the drive motor, and the two stirring shafts rotate in opposite directions; by cooperating with the reducer and the drive motor, the energy consumption can be reduced while ensuring the stirring effect. A stirring blade assembly is installed on the stirring shaft 2, wherein the stirring blade assembly includes a forward scraping part 3, a stirring part 4, and a reverse scraping part 5. The forward scraping part 3 and the reverse scraping part 5 are respectively installed on the stirring shaft 2 near the two ends, and the stirring part is installed in the middle of the stirring shaft. The stirring part includes a plurality of stirring arms 205 installed around the axis on the stirring shaft, and stirring blades 206 are installed on the stirring arm. The stirring blades are T-shaped, and the ends have a scraping function and the entire blade has a stirring function; the forward scraping part and the reverse scraping part are symmetrically arranged and the scraping directions are opposite. The forward scraping part and the reverse scraping part both include a scraping arm 201 installed on the stirring shaft, and a scraping blade 202 is installed on the scraping arm; the scraping blade is L-shaped, and a scraping part 203 and a stirring part 204 are designed on the scraping blade. The scraping part 203 is used to scrape the material on the end wall of the silo and is arranged radially along the stirring shaft.

[0031] As one of the installation design forms, blade arm fixing seats are installed on the stirring shaft 2 at the positions corresponding to the stirring arm and the scraper arm. The blade arm fixing seat includes an arc sleeve 1 209 and an arc sleeve 2 210 that are interlocked with each other. The arc sleeve 1 and the arc sleeve 2 are interlocked and then mounted on the stirring shaft 2. The stirring arm and the scraper arm are fixed by the blade arm fixing seat. This design not only simplifies the assembly process, but also improves the stability of the structure. At the same time, the blade arm fixing seat adopts the design of arc sleeve 1 and arc sleeve 2 that are interlocked with each other, making the installation and disassembly of the stirring arm and the scraper arm more convenient, and improving the maintainability and flexibility of the equipment. Through the combined design of the forward scraping part, the stirring part, and the reverse scraping part, multi-region and multi-position stirring of the material is achieved. This design not only improves the uniformity of stirring, but also significantly improves the mixing efficiency, so that the material reaches the ideal mixing state in a short time.

[0032] Furthermore, in this embodiment, a blade arm isolation sleeve 211 is installed between the two blade arm mountings corresponding to the agitator shaft. This effectively reduces friction and collision between the agitator arm 205 and the scraper arm 201, thereby extending the service life of the equipment. Furthermore, this design reduces noise and vibration during operation, improving the stability and reliability of the equipment.

[0033] Furthermore, a plurality of stirring blade arms are arranged in a spiral line on the stirring shaft. The specific stirring blade parameters are as follows: the stirring blade has a blade installation angle of 30°-60°, and the stirring blade is detachably mounted on the free end of the stirring blade arm, so that the extension length of the stirring blade can be adjusted according to needs; wherein the stirring blade arm is provided with a long waist hole 207 radially along the stirring shaft corresponding to the position of the stirring blade, and the stirring blade is adjustably mounted on the stirring blade arm through the long waist hole, and a positioning plate 208 is mounted on the back of the stirring blade to cooperate with both sides of the stirring blade arm; the stirring blade adopts a detachable design, which is convenient for cleaning and replacement, and effectively avoids the problems of material residue and cross contamination. At the same time, through the provision of the long waist hole and the positioning plate, the stirring blade is adjustable on the stirring blade arm, making the stirring process more flexible and adaptable to materials of different properties and mixing requirements. In the actual application of the stirring shaft, two sets of stirring shafts are used in combination to ensure that the stirring blades on the two stirring shafts are staggered in the axial direction to enhance the stirring effect. The cross-section of the agitator shaft corresponding to the mounting location of the stirring blade assembly is square, and mounting holes for the agitator shaft are provided on the blade arm mounting seat and blade arm isolation sleeve, enhancing the stability and durability of the structure. Stuffing seals and bearing seats are installed on both ends of the agitator shaft on the frame to ensure sealing and rotational flexibility during the mixing process. The dual-shaft agitator design rotates side by side on the frame and meshes with each other through gears at one end, allowing the two agitator shafts to rotate in opposite directions. This design not only expands the mixing range but also subjects the material to shear and compression from two different directions during the mixing process, thereby improving mixing efficiency and uniformity.

[0034] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-shaft stirring device for a mixer, comprising a frame, characterized in that: The frame is provided with stirring shafts that rotate side by side, and one end of the two stirring shafts is meshed with each other through gears. The stirring shaft is provided with a stirring blade assembly, and the stirring blade assembly includes a forward scraping part, a stirring part, and a reverse scraping part. The forward scraping part and the reverse scraping part are respectively close to the two ends of the stirring shaft, and the stirring part is arranged in the middle of the stirring shaft. The stirring part includes a plurality of stirring arms arranged around the axis on the stirring shaft, and the stirring arms are provided with stirring blades. The forward scraping part and the reverse scraping part both include scraping arms arranged on the stirring shaft, and the scraping arms are provided with scraping blades.

2. A double-shaft stirring device for a mixer according to claim 1, characterized in that: The stirring shaft is provided with blade arm fixing seats corresponding to the stirring arm and the scraping arm. The blade arm fixing seats include an arc sleeve 1 and an arc sleeve 2 which are buckled with each other. The arc sleeve 1 and the arc sleeve 2 are buckled with each other and then sleeved on the stirring shaft.

3. A double-shaft stirring device for a mixer according to claim 2, characterized in that: A blade arm isolation sleeve is arranged between two blade arm fixing seats corresponding to the stirring shaft.

4. A double-shaft stirring device for a mixer according to claim 3, characterized in that: The cross section of the stirring shaft corresponding to the installation position of the stirring blade assembly is square, and the blade arm fixing seat and the blade arm isolation sleeve are provided with installation holes that match the stirring shaft.

5. A double-shaft stirring device for a mixer according to claim 1, characterized in that: A first meshing gear plate and a second meshing gear plate are respectively arranged at one end of the two stirring shafts, the first meshing gear plate is connected to a driving motor, a reducer is arranged between the first meshing gear plate and the driving motor, and the two stirring shafts rotate in opposite directions.

6. A double-shaft stirring device for a mixer according to claim 1, characterized in that: The frame is provided with packing seals and bearing seats at both ends corresponding to the stirring shaft.

7. A double-shaft stirring device for a mixer according to claim 1, characterized in that: The opposite stirring blade assemblies on the two stirring shafts are arranged alternately in the axial direction.

8. A double-shaft stirring device for a mixer according to claim 1, characterized in that: A plurality of stirring blade arms are arranged on the rotating shaft in a spiral line, and the stirring blades are detachably arranged at the free ends of the stirring blade arms.

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