A stirring shaft with centrifugal separation function

Abstract

The utility model discloses a kind of stirring shafts with centrifugal separation function, it relates to stirring equipment technical field. Including main shaft, the upper end of main shaft is connected with driving motor by coupling, main shaft adopts hollow shaft, the lower end of main shaft is set with the fixed part connected with secondary stirring assembly, main shaft top opening is as material inlet, spiral push rod is fixed in the hollow section of main shaft, spiral push rod and main shaft inner wall are integrally formed by welding, the pipe wall of main shaft is evenly distributed with multiple discharge holes. The utility model can actively transport the material added from top in shaft, and carry out centrifugal dispersion through the hole on shaft wall, cooperate with the multistage stirring of below, realize the rapid, uniform mixing of material in kettle.

Description

Technical Field

[0001] This utility model relates to the field of mixing equipment technology, specifically to a mixing shaft with built-in centrifugal separation function. Background Technology

[0002] In industrial production, stirred tanks are commonly used mixing equipment. Traditional mixing methods typically involve a feed inlet at the top of the tank, where materials fall into the tank by gravity and are then mixed by a stirring paddle or shaft at the bottom. This method has several problems:

[0003] Uneven dispersion: For powdery or easily agglomerated materials, when added from the top, they tend to form clumps on the liquid surface or in the upper part of the vessel, making it difficult to disperse quickly, resulting in long mixing time and low efficiency.

[0004] Centrifugal effect: When the stirring speed is fast, under the action of centrifugal force, materials or liquids with higher density are easily thrown to the inner wall of the vessel, forming a "layering" or "wall-adhering" phenomenon, resulting in insufficient mixing in the central area and affecting the quality of the final product. As described in the search results [1], traditional agitators have the problem that the mixture cannot be repeatedly mixed.

[0005] Simple structure: Existing stirring shafts have relatively simple functions, mostly only providing rotational force and unable to actively guide and disperse materials.

[0006] Therefore, there is an urgent need to develop a new type of stirring shaft that can solve the dispersion problem when feeding from the top and effectively overcome the problem of uneven mixing caused by centrifugal effect. Utility Model Content

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a stirring shaft with a built-in centrifugal separation function, which can actively transport materials added from the top within the shaft and centrifugally disperse them through holes in the shaft wall. Combined with multi-stage stirring below, this enables rapid and uniform mixing of materials within the vessel.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a stirring shaft with built-in centrifugal separation function, including a main shaft, the upper end of which is connected to a drive motor via a coupling, the main shaft being a hollow shaft, the lower end of which is provided with a fixing component connected to a secondary stirring assembly, the top opening of the main shaft serving as a material inlet, a spiral push rod fixed in the hollow section inside the main shaft, the spiral push rod being welded integrally with the inner wall of the main shaft, and multiple discharge holes evenly distributed on the tube wall of the main shaft.

[0009] Preferably, the secondary stirring assembly is located below the main shaft and is fixed to the main shaft by a fastener.

[0010] Preferably, the secondary stirring assembly includes a cross-shaped or star-shaped support, and at least one set of self-rotating stirring units are mounted at the end of the support via bearings.

[0011] Preferably, the self-rotating stirring unit consists of a driven gear and a self-rotating stirring blade. An annular fixed gear ring that meshes with the driven gear is fixedly installed on the inner wall of the stirring vessel.

[0012] Preferably, the upper end of the main shaft is welded and fixed to the coupling.

[0013] Preferably, the discharge holes are distributed circumferentially along the main shaft.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting a spiral pusher inside the hollow main shaft and opening holes in the shaft wall, the passive material feeding is transformed into active shaft conveying and centrifugal throwing. The material added from the top can be quickly dispersed and thrown into the entire vessel space in the first time, which greatly shortens the wetting and dispersion time of the material.

[0016] 2. The secondary stirring component, through the combination of revolution and rotation, forms a complex flow field inside the vessel, effectively breaking the stratification phenomenon caused by centrifugal force, promoting repeated exchange of materials in the radial and axial directions, and ensuring uniform mixing without dead zones.

[0017] 3. The material conveying and centrifugal dispersion functions are directly integrated onto the main shaft, eliminating the need for a separate dispersion module. This makes the overall structure simpler and more compact, reducing manufacturing costs and maintenance difficulty. The welded coupling also enhances the stability and reliability of the transmission.

[0018] 4. This utility model is particularly suitable for processing materials with high viscosity, easy agglomeration, and multiphase systems, and has broad application prospects in the food, pharmaceutical, chemical, and new materials industries. Attached Figure Description

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 A sectional view along the AA direction. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Reference Figure 1-2The specific embodiment adopts the following technical solution: a stirring shaft with a built-in centrifugal separation function, including a main shaft 1, the upper end of the main shaft 1 is connected to a drive motor through a coupling 2, the main shaft 1 is a hollow shaft, the lower end of the main shaft 1 is provided with a fixing part 3 connected to a secondary stirring component, the top opening of the main shaft 1 serves as a material inlet, a spiral push rod is fixed in the hollow section inside the main shaft 1, the spiral push rod is welded to the inner wall of the main shaft 1 as an integral form, and multiple discharge holes 4 are evenly distributed on the tube wall of the main shaft 1.

[0024] It is worth noting that the secondary stirring assembly is located below the main shaft 1 and is fixed to the main shaft by the fixing member 3.

[0025] It is worth noting that the secondary stirring assembly includes a cross-shaped or star-shaped support, and at least one set of self-rotating stirring units are mounted on the end of the support via bearings.

[0026] It is worth noting that the self-rotating stirring unit consists of a driven gear and a self-rotating stirring blade. An annular fixed gear ring that meshes with the driven gear is fixedly installed on the inner wall of the stirring vessel.

[0027] It is worth noting that the upper end of the main shaft 1 is welded and fixed to the coupling 2.

[0028] In addition, the discharge holes 4 are distributed circumferentially along the main axis.

[0029] The working principle of this specific embodiment is as follows: During operation, the drive motor rotates the main shaft, and the material falls directly from the feed port at the top of the vessel into the opening at the top of the main shaft. Driven by the rotation of the spiral pusher, the material is forced downwards along the inside of the main shaft. When the material reaches the section with the discharge hole, under the action of centrifugal force, the material is thrown out at high speed through the discharge hole on the main shaft tube wall, forming the first centrifugal initial dispersion. The thrown material is dispersed around the vessel. The main shaft continues to rotate, driving the secondary stirring assembly to revolve. Due to the meshing of the driven gear with the fixed gear ring on the vessel wall, the rotating stirring blades are driven to rotate at high speed. This combined motion of revolution and rotation creates strong irregular turbulence inside the vessel, subjecting the material to a second round of powerful shearing and mixing, and continuously scraping the vessel wall to prevent material adhesion.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stirring shaft with built-in centrifugal separation function, characterized in that, Includes a main shaft (1), the upper end of which is connected to a drive motor via a coupling (2). The main shaft (1) is a hollow shaft. The lower end of the main shaft (1) is provided with a fixing part (3) connected to the secondary stirring assembly. The top opening of the main shaft (1) serves as a material inlet. A spiral push rod is fixed in the hollow section inside the main shaft (1). The spiral push rod is welded to the inner wall of the main shaft (1) as an integral part. Multiple discharge holes (4) are evenly distributed on the tube wall of the main shaft (1).

2. The stirring shaft with built-in centrifugal separation function according to claim 1, characterized in that, The secondary stirring assembly is located below the main shaft (1) and is fixed to the main shaft by a fastener (3).

3. The stirring shaft with built-in centrifugal separation function according to claim 1, characterized in that, The secondary mixing assembly includes a cross-shaped or star-shaped support, and at least one set of self-rotating mixing units are mounted at the end of the support via bearings.

4. A stirring shaft with built-in centrifugal separation function according to claim 3, characterized in that, The self-rotating stirring unit consists of a driven gear and a self-rotating stirring blade. On the inner wall of the stirring vessel, an annular fixed gear ring that meshes with the driven gear is fixedly installed.

5. A stirring shaft with built-in centrifugal separation function according to claim 1, characterized in that, The upper end of the main shaft (1) is welded and fixed to the coupling (2).

6. A stirring shaft with built-in centrifugal separation function according to claim 1, characterized in that, The discharge holes (4) are distributed circumferentially along the main shaft (1).

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