Multi-angle stirring blade structure of a kneader

Abstract

The utility model relates to kneading machine equipment technical field, and disclose a kind of multi-angle stirring vane structure of kneading machine, including stirring spindle, the circumferential surface of stirring spindle is spaced apart and is provided with at least two groups of blade assembly along the axial direction, each blade assembly includes angle adjusting seat, main stirring vane and auxiliary stirring vane;The angle adjusting seat fixed sleeve is set in the circumferential surface of stirring spindle, and main stirring vane is rotatably connected with angle adjusting seat by first pivot and is equipped with angle locking piece;Auxiliary stirring vane is rotatably connected with main stirring vane by second pivot and is equipped with elastic buffer between them.The utility model is through the adjustable angle of main stirring vane and the self-adapting swing of auxiliary stirring vane, realize the multidirectional shearing, overturning and dispersion to material, effectively solve the problem that traditional fixed angle blade mixing uniformity is poor, efficiency is low, can promote mixing uniformity, shorten stirring time, adapt to a variety of material processing needs, reduce enterprise equipment investment cost.

Description

Technical Field

[0001] This utility model relates to the technical field of kneading equipment, specifically to a multi-angle stirring blade structure for a kneading machine. Background Technology

[0002] Kneaders are key pieces of equipment in the production processes of industries such as rubber, plastics, and polymer materials. They are mainly used for mixing, plasticizing, and dispersing materials. Through the agitator blades, they apply shearing, compressing, and tumbling forces to the materials, achieving uniform mixing. In actual production, the quality of material mixing directly affects the performance of the final product, such as the strength of rubber products and the molding stability of plastic products.

[0003] Currently, most existing kneader blades are designed with a fixed angle, resulting in a single contact direction between the blades and the material. During mixing, the material can only be sheared or tumbled in one direction. This structure has the following drawbacks: Poor material mixing uniformity: Fixed-angle blades cannot cover all areas inside the kneading chamber, especially the corners of the chamber and the blind spots of the blade movement trajectory, which easily leads to material accumulation, resulting in insufficient mixing of some materials, uneven local components, and affecting the stability of product quality.

[0004] Low mixing efficiency: The force applied from a single angle cannot quickly break up material agglomerates, and it is necessary to extend the mixing time to achieve a basic mixing effect. This not only increases production energy consumption but also reduces overall production efficiency, making it difficult to meet the high-efficiency requirements of large-scale industrial production.

[0005] Limited applicability: Different materials (such as high-viscosity rubber, low-melting-point plastics, and mixtures of granules and powders) have different requirements for the direction and intensity of the stirring force. Fixed-angle blades cannot adjust the stirring angle according to the material characteristics, resulting in a kneader being only suitable for a few types of materials. This leads to poor equipment versatility and increases the equipment investment cost for enterprises.

[0006] Therefore, it is necessary to improve the structure of the kneader's multi-angle stirring blades to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a multi-angle stirring blade structure for a kneader to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a multi-angle stirring blade structure for a kneader, comprising a stirring main shaft, wherein at least two sets of blade assemblies are axially spaced on the circumferential surface of the stirring main shaft, each set of blade assemblies comprising an angle adjusting seat, a main stirring blade, and an auxiliary stirring blade; the angle adjusting seat is fixedly sleeved on the circumferential surface of the stirring main shaft by a key connection, and an annular adjusting groove is provided on the outer side wall of the angle adjusting seat; one end of the main stirring blade is rotatably connected to the annular adjusting groove through a first rotating shaft, and an angle locking element is provided between the main stirring blade and the angle adjusting seat; one end of the auxiliary stirring blade is rotatably connected to the middle side wall of the main stirring blade through a second rotating shaft, and an elastic buffer element is provided between the auxiliary stirring blade and the main stirring blade.

[0009] Furthermore, the inner wall of the annular adjustment groove is provided with a plurality of circumferentially distributed locking holes. The angle locking component includes a locking pin that penetrates the side wall of the main stirring blade and a return spring sleeved on the circumferential surface of the locking pin. The end of the locking pin can be engaged with the locking hole. By engaging the locking pin with different locking holes, the angle adjustment of the main stirring blade around the first rotating shaft from 0 to 60° can be realized to adapt to the stirring requirements of different materials.

[0010] Furthermore, the two ends of the elastic buffer are welded and fixed to the side walls of the main stirring blade and the auxiliary stirring blade, respectively; the elastic buffer allows the auxiliary stirring blade to swing adaptively with the material resistance during the stirring process, avoiding overload on the blade when the material agglomerates, and at the same time enhancing the tumbling and dispersing effect of the material.

[0011] Furthermore, the main stirring blade is provided with an arc-shaped stirring part at the end away from the angle adjustment seat, and the outer wall of the arc-shaped stirring part is provided with several dispersing grooves; the arc-shaped stirring part can move in close contact with the side wall of the kneader cavity, reducing the accumulation of material in the corner of the cavity, and the dispersing grooves can further break up material agglomerates and improve the mixing uniformity.

[0012] Furthermore, the peripheral surface of the auxiliary stirring blade is provided with a wear-resistant coating, which is a tungsten carbide spray coating; the wear-resistant coating can extend the service life of the auxiliary stirring blade, and is especially suitable for stirring scenarios of high hardness particulate materials.

[0013] Furthermore, both ends of the stirring spindle are provided with flange connecting plates, and the surface of the flange connecting plates is provided with several positioning holes; the stirring spindle can be quickly connected to the drive mechanism of the kneader through the flange connecting plates, and the positioning holes are used to ensure the coaxiality of the stirring spindle and avoid vibration during high-speed rotation.

[0014] Furthermore, the side wall of the angle adjustment seat is provided with an angle scale line, and the side wall of the main stirring blade is provided with an indicator line that matches the angle scale line; the accuracy of the angle scale line is 1°, which makes it easy for the operator to accurately adjust the angle of the main stirring blade and ensure the consistency of the angles of multiple blade assemblies.

[0015] Compared with the prior art, this utility model provides a multi-angle stirring blade structure for a kneader, which has the following beneficial effects: Improved mixing uniformity: Through the adjustable angle design of the main stirring blades and the adaptive oscillation of the auxiliary stirring blades, multi-directional shearing, tumbling and dispersion of materials in the kneading chamber can be achieved, covering the chamber without dead corners, effectively avoiding material accumulation, solving the problem of uneven mixing by fixed-angle blades, and ensuring uniform material composition.

[0016] Improved mixing efficiency: The multi-angle mixing force can quickly break up material agglomerates and reduce mixing time; at the same time, the design of the arc-shaped mixing part and the dispersing groove further enhances the material crushing effect. Compared with traditional fixed blades, the mixing efficiency can be improved and the production energy consumption can be reduced.

[0017] Enhanced applicability: The angle of the main stirring blades can be adjusted according to different material characteristics (such as viscosity and particle size), and the elastic buffer design of the auxiliary stirring blades can adapt to the stirring needs of materials with high to low viscosity. One kneader can meet the processing needs of a variety of materials, reduce the equipment investment cost of enterprises, and solve the problem of limited applicability of fixed-angle blades. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the stirring spindle structure of this utility model; Figure 3 This is a schematic diagram of the blade assembly structure of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Stirring main shaft; 11. Flange connecting plate; 111. Positioning hole; 2. Blade assembly; 21. Angle adjustment seat; 211. Annular adjustment groove; 212. Locking hole; 213. Angle scale line; 22. Main stirring blade; 221. First rotating shaft; 222. Arc-shaped stirring part; 223. Dispersion tooth groove; 224. Indicator line; 23. Auxiliary stirring blade; 231. Second rotating shaft; 232. Wear-resistant coating; 3. Angle locking component; 31. Locking pin; 32. Return spring; 4. Elastic buffer component. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0022] Please see Figure 1-4 This utility model provides a technical solution: a multi-angle stirring blade structure for a kneader, including a stirring main shaft 1, with flange connecting plates 11 at both ends of the stirring main shaft 1. The surface of the flange connecting plate 11 is provided with several positioning holes 111. The stirring main shaft 1 can be quickly connected to the kneader drive mechanism through the flange connecting plate 11. The positioning holes 111 ensure the coaxiality of the stirring main shaft 1 and avoid vibration and noise during high-speed rotation. Three sets of blade assemblies 2 are arranged axially on the circumferential surface of the stirring main shaft 1 (the number of sets can be adjusted according to the length of the kneader cavity). Each set of blade assemblies 2 includes an angle adjustment seat 21, a main stirring blade 22, and an auxiliary stirring blade 23.

[0023] Angle adjustment seat 21 is fixedly sleeved onto the circumference of the stirring main shaft via a flat key connection. An annular adjustment groove 211 is formed on the outer wall of the angle adjustment seat 21, and several circumferentially distributed locking holes 212 are formed on the inner wall of the annular adjustment groove 211. Angle adjustment seat 21 has angle scale lines 213 with an accuracy of 1° on its side wall for precise angle adjustment. One end of the main stirring blade 22 is rotatably connected to the annular adjustment groove 211 via a first rotating shaft 221. The side wall of the main stirring blade 22 has a groove that corresponds to the angle scale line 213. The indicator line 224 is provided. An angle locking component 3 is provided between the main stirring blade 22 and the angle adjustment seat 21. The angle locking component 3 includes a locking pin 31 that penetrates the side wall of the main stirring blade 22 and a return spring 32 that is sleeved on the circumferential surface of the locking pin 31. The end of the locking pin 31 can be engaged with the locking hole 212. Pressing the locking pin 31 can release the lock. After rotating the main stirring blade 22 to the target angle, the return spring 32 pushes the locking pin 31 into the corresponding locking hole 212 to achieve angle fixation within the range of 0-60°.

[0024] The main stirring blade 22 has an arc-shaped stirring section 222 at the end away from the angle adjustment seat 21. The arc of the arc-shaped stirring section 222 is adapted to the arc of the side wall of the kneader cavity, which can reduce the accumulation of material in the corner of the cavity. The outer side wall of the arc-shaped stirring section 222 is provided with several dispersing grooves 223 for breaking up material agglomerates. One end of the auxiliary stirring blade 23 is rotatably connected to the middle side wall of the main stirring blade 22 through the second rotating shaft 231. An elastic buffer 4 is provided between the auxiliary stirring blade 23 and the main stirring blade 22. The two ends of the elastic buffer 4 are welded and fixed to the side walls of the main stirring blade 22 and the auxiliary stirring blade 23, respectively, so that the auxiliary stirring blade 23 can swing adaptively with the material resistance (0-30°) to avoid blade overload damage. The peripheral surface of the auxiliary stirring blade 23 is provided with a tungsten carbide wear-resistant coating 232 to extend its service life.

[0025] Working principle: When this multi-angle stirring blade structure is used in a kneader, the operator can adjust the angle of the main stirring blade 22 according to the material characteristics (such as high viscosity rubber, low melting point plastic): press the locking pin 31 to release the angle lock, refer to the angle scale line 213 and indicator line 224, rotate the main stirring blade 22 to the target angle, release the locking pin 31, and the return spring 32 pushes the locking pin 31 into the corresponding locking hole 212 to complete the angle fixation.

[0026] After the kneader is started, the mixing shaft 1 drives the blade assembly 2 to rotate. The arc-shaped mixing section 222 of the main mixing blade 22 moves in contact with the side wall of the cavity, preventing material accumulation in corners and breaking up material agglomerates with the dispersing grooves 223. At the same time, the auxiliary mixing blades 23, under the action of the elastic buffer 4, adaptively swing with the material resistance, turning the material in multiple directions to further improve the mixing uniformity. Compared with traditional fixed-angle blades, this structure can shorten the material mixing time, improve the mixing uniformity, adapt to various material processing needs, and reduce equipment investment costs.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A multi-angle stirring blade structure for a kneader, characterized in that, The system includes a stirring spindle (1), on which at least two sets of blade assemblies (2) are spaced apart along the axial direction on the circumferential surface. Each set of blade assemblies (2) includes an angle adjustment seat (21), a main stirring blade (22), and an auxiliary stirring blade (23). The angle adjustment seat (21) is fixedly sleeved on the circumferential surface of the stirring spindle (1), and an annular adjustment groove (211) is provided on the outer side wall of the angle adjustment seat (21). One end of the main stirring blade (22) is rotatably connected to the annular adjustment groove (211) through a first rotating shaft (221), and an angle locking member (3) is provided between the main stirring blade (22) and the angle adjustment seat (21). One end of the auxiliary stirring blade (23) is rotatably connected to the middle side wall of the main stirring blade (22) through a second rotating shaft (231), and an elastic buffer member (4) is provided between the auxiliary stirring blade (23) and the main stirring blade (22).

2. The multi-angle stirring blade structure of a kneader according to claim 1, characterized in that, The inner wall of the annular adjustment groove (211) is provided with a plurality of circumferentially distributed locking holes (212). The angle locking component (3) includes a locking pin (31) that penetrates the side wall of the main stirring blade (22) and a return spring (32) sleeved on the circumferential surface of the locking pin (31). The end of the locking pin (31) can be engaged with the locking hole (212).

3. The multi-angle stirring blade structure of a kneader according to claim 1, characterized in that, Furthermore, the two ends of the elastic buffer (4) are fixedly connected to the side wall of the main stirring blade (22) and the side wall of the auxiliary stirring blade (23), respectively.

4. The multi-angle stirring blade structure of a kneader according to claim 1, characterized in that, The main stirring blade (22) has an arc-shaped stirring part (222) at one end away from the angle adjustment seat (21), and the outer side wall of the arc-shaped stirring part (222) is provided with a number of dispersed grooves (223).

5. The multi-angle stirring blade structure of a kneader according to claim 1, characterized in that, The peripheral surface of the auxiliary stirring blade (23) is provided with a wear-resistant coating (232), which is a tungsten carbide spray coating.

6. The multi-angle stirring blade structure of a kneader according to claim 1, characterized in that, Both ends of the stirring spindle (1) are provided with flange connecting plates (11), and the surface of the flange connecting plates (11) is provided with several positioning holes (111).

7. The multi-angle stirring blade structure of a kneader according to claim 1, characterized in that, The side wall of the angle adjustment seat (21) is provided with an angle scale line (213), and the side wall of the main stirring blade (22) is provided with an indicator line (224) adapted to the angle scale line (213).

8. The multi-angle stirring blade structure of a kneader according to claim 1, characterized in that, The adjustable angle range of the main stirring blade (22) around the first rotating shaft (221) is 0-60°, and the adaptive swing angle range of the auxiliary stirring blade (23) under the action of the elastic buffer (4) is 0-30°.

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