Double-shaft opposite stirring kneading machine

Abstract

The utility model provides a double-shaft opposite stirring kneader which comprises a base mechanism and a stirring mechanism, the base mechanism comprises a base body, a left support and a right support, the left support and the right support are respectively installed on two sides of the base body, and the stirring mechanism comprises a stirring barrel, a supporting frame, a first stirring assembly and a second stirring assembly. The bottom of the stirring barrel is fixed to the upper end face of the base body through a supporting frame, the first stirring assembly and the second stirring assembly are symmetrically installed on the two sides of an inner cavity of the stirring barrel, the feeding barrel is installed at the upper end of the stirring barrel, and the material uniformizing assembly is installed in the feeding barrel. Materials can do composite motion in the axial direction and the circumferential direction in the stirring barrel, stirring dead angles are effectively eliminated, the materials are fully stirred and kneaded, the stirring uniformity is greatly improved, and the product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mixing and kneading equipment technology, and in particular to a dual-shaft counter-rotating mixing and kneading machine. Background Technology

[0002] In many industries such as chemical, food, and plastics, it is often necessary to mix and knead different materials to achieve uniform mixing and promote chemical reactions. Traditional mixing equipment has many shortcomings. For example, single-shaft mixers have a limited mixing range and are not effective at mixing large quantities of materials or materials with high viscosity, making it difficult to ensure thorough mixing.

[0003] While some multi-shaft mixing equipment improves mixing efficiency to a certain extent, it has a complex structure, high energy consumption, and is difficult to maintain. As for twin-shaft mixing kneaders, some existing equipment has unreasonable design of the mixing blades, which makes it easy for materials to have dead zones during the mixing process, making it impossible to achieve all-round and efficient mixing and kneading, thus affecting the quality of material processing. Therefore, it is necessary to design a twin-shaft opposing mixing kneader. Summary of the Invention

[0004] This invention provides a dual-shaft counter-rotating mixing and kneading machine to solve the problem of uneven mixing in existing mixing and kneading equipment. It can achieve compound motion in the axial and circumferential directions, effectively eliminate mixing dead angles, and enable materials to be fully mixed and kneaded.

[0005] This utility model provides a dual-shaft counter-directional mixing and kneading machine, including a base mechanism and a mixing mechanism;

[0006] The base mechanism includes a base body, a left bracket, and a right bracket, with the left bracket and right bracket respectively installed on both sides of the base body;

[0007] The stirring mechanism includes a stirring cylinder, a support frame, a first stirring component, and a second stirring component. The bottom of the stirring cylinder is fixed to the upper surface of the base body by the support frame. The first stirring component and the second stirring component are symmetrically installed on both sides of the inner cavity of the stirring cylinder. A feed cylinder is installed at the upper end of the stirring cylinder.

[0008] Preferably, the first stirring assembly and the second stirring assembly have completely identical structures, including a stirring shaft and a combined impeller. One end of the stirring shaft is connected to the inner wall of the stirring cylinder through a bearing seat, and the combined impeller is installed on the outer wall of the stirring shaft.

[0009] Preferably, a support base is also installed on the base, and a motor, a reducer and a coupling are respectively installed on the support base. The motor is connected to the input shaft of the reducer through the coupling, and the output shaft of the reducer is connected to one end of the two stirring shafts through the coupling.

[0010] Preferably, the combined impeller includes a main impeller, an auxiliary impeller, and a spiral impeller. The main impeller has a straight plate structure and is perpendicular to the outer wall of the stirring shaft. The auxiliary impeller is installed on both sides of the main impeller and has small serrated or corrugated shapes. The spiral impeller is installed on the outer wall of the stirring shaft, and the blade angle of the spiral impeller near the two ends of the stirring cylinder is small, while the blade angle of the spiral impeller located in the middle of the cylinder is large.

[0011] Preferably, a material leveling component is also installed inside the feed cylinder. The material leveling component includes a rotating shaft, a material leveling plate, and a servo motor. The two ends of the rotating shaft are respectively mounted on the inner side wall of the feed cylinder through bearing seats. The material leveling plate is mounted on the outer wall of the rotating shaft, and a plurality of through holes are evenly distributed on the surface of the material leveling plate. The servo motor is mounted on the outer wall of the feed cylinder, and the output shaft of the servo motor is connected to the end of the rotating shaft for transmission.

[0012] Preferably, the stirring cylinder is further provided with a temperature sensor, a pressure sensor and a material concentration sensor, which are respectively connected to a controller installed on the base body. The controller is also connected to a motor, a reducer and a servo motor respectively.

[0013] Beneficial effects:

[0014] (1) The present invention has a novel structural design. The material can achieve composite movement in the axial and circumferential directions in the mixing drum, effectively eliminating the dead angle of mixing, so that the material can be fully mixed and kneaded, greatly improving the uniformity of mixing and ensuring product quality.

[0015] (2) The combined blade structure of this utility model has the main blade and the auxiliary blade working together to further enhance the stirring, pushing and shearing effect on the material. In addition, the spiral blade can perform stronger stirring and shearing on the material, effectively eliminating the stirring dead corner and improving the stirring uniformity. It is especially suitable for complex material systems.

[0016] (3) The material equalization component installed in the feed cylinder of this utility model can ensure that the material falls evenly into the mixing cylinder, prevent the material from accumulating, and further improve the mixing and kneading effect.

[0017] The above description is merely an overview of the technical solutions of the present utility model embodiments. In order to better understand the technical means of the present utility model embodiments and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present utility model embodiments more obvious and understandable, specific embodiments of the present utility model are described below. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the combined blade installation of this utility model;

[0021] Figure 3 This is a schematic diagram of the material leveling component of this utility model;

[0022] Explanation of reference numerals in the attached drawings: 1. Base body; 2. Left support; 3. Right support; 4. Mixing cylinder; 5. Support frame; 6. Feeding cylinder; 7. Blending assembly; 8. Mixing shaft; 9. Combined impeller; 10. Bearing seat; 11. Support seat; 12. Mounting motor; 13. Reducer; 14. Coupling; 15. Main impeller; 16. Auxiliary impeller; 17. Spiral impeller; 18. Rotating shaft; 19. Blending plate; 20. Servo motor; 21. Through hole; 22. Temperature sensor; 23. Pressure sensor; 24. Material concentration sensor; 25. Controller. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by fasteners, such as screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] Please see Figures 1-3 This utility model discloses a dual-shaft opposing mixing and kneading machine, including a base mechanism and a mixing mechanism;

[0027] The base mechanism includes a base body 1, a left support 2 and a right support 3, with the left support 2 and the right support 3 respectively installed on both sides of the base body 1;

[0028] The stirring mechanism includes a stirring cylinder 4, a support frame 5, a first stirring component, and a second stirring component. The bottom of the stirring cylinder 4 is fixed to the upper surface of the base body 1 by the support frame 5. The first stirring component and the second stirring component are symmetrically installed on both sides of the inner cavity of the stirring cylinder 4. A feed cylinder 6 is installed at the upper end of the stirring cylinder 4.

[0029] The first and second stirring components have identical structures, including a stirring shaft 8 and a combined impeller 9. One end of the stirring shaft 8 is connected to the inner wall of the stirring cylinder 4 via a bearing seat 10, and the combined impeller 9 is installed on the outer wall of the stirring shaft 8. The combined impeller 9 includes a main impeller 15, a secondary impeller 16, and a spiral impeller 17. The main impeller 15 has a straight plate structure and is perpendicular to the outer wall of the stirring shaft 8. The main function of the main impeller is to generate a large axial pushing and radial stirring force on the material when the stirring shaft rotates, which can quickly agitate the material over a wide range within the stirring cylinder. The auxiliary blades 16 are installed on both sides of the main blade 15. The auxiliary blades 16 are small, serrated or corrugated. The auxiliary blades increase the contact area and friction between the blades and the material. When the material is driven by the main blades through the auxiliary blades, the auxiliary blades can perform finer shearing and dispersion of the material, further improving the mixing uniformity. The spiral blades 17 are installed on the outer wall of the stirring shaft 8. The blade angles of the spiral blades 17 near the two ends of the stirring cylinder are small, while the blade angles of the spiral blades 17 in the middle of the cylinder are large. This utility model has a combined blade structure where the main blades and auxiliary blades work together to further enhance the stirring, pushing, and shearing effects on the material. In addition, the spiral blades can perform stronger stirring and shearing of the material, effectively eliminating dead zones and improving mixing uniformity, making it particularly suitable for complex material systems.

[0030] In this invention, a support base 11 is also installed on the base body 1. A motor 12, a reducer 13, and a coupling 14 are respectively installed on the support base 11. The motor 12 is connected to the input shaft of the reducer 13 via the coupling 14, and the output shaft of the reducer 13 is connected to one end of each of the two stirring shafts 8 via the coupling 14. The motor is a variable frequency motor, and its speed can be adjusted by the frequency converter according to different production process requirements, thereby achieving precise control of the stirring shaft speed. The reducer uses a high-precision gear reducer, which can convert the high-speed rotation of the motor into the low-speed, high-torque output required by the stirring shaft, ensuring stable and reliable operation of the stirring shaft.

[0031] In addition, in this invention, a material leveling component 7 is also installed inside the feeding cylinder 6. The material leveling component 7 includes a rotating shaft 18, a material leveling plate 19, and a servo motor 20. Both ends of the rotating shaft 18 are mounted on the inner wall of the feeding cylinder 6 via bearing seats. The material leveling plate 19 is mounted on the outer wall of the rotating shaft 18, and its surface is evenly distributed with several through holes 21. The servo motor 20 is mounted on the outer wall of the feeding cylinder 6, and its output shaft is connected to the end of the rotating shaft 18 via a transmission connection. When the servo motor is working, it drives the rotating shaft to rotate, which in turn drives the material leveling plate to rotate, uniformly turning the incoming material before feeding it into the mixing drum. The material leveling component installed inside the feeding cylinder of this invention ensures that the material falls evenly into the mixing drum, preventing material accumulation and further improving the mixing and kneading effect.

[0032] In addition, a temperature sensor 22, a pressure sensor 23, and a material concentration sensor 24 are installed inside the stirring drum 4. These sensors are connected to a controller 25 mounted on the base body 1. The controller 25 is also connected to a motor 12, a reducer 13, and a servo motor 20. The temperature, pressure, and material concentration sensors are used to monitor the temperature, pressure, and concentration of the material in real time. The sensors transmit the collected data to the controller, which automatically adjusts the motor speed, stirring time, and other parameters according to preset process parameters. Operators can input various process parameters through the operating interface, view the equipment's operating status and real-time data, and achieve intelligent control of the equipment.

[0033] Working Principle: When the equipment is turned on, the motor drives the reducer through a coupling. The reducer converts the motor's high-speed, low-torque output into low-speed, high-torque output, which is then transmitted to the two stirring shafts through the coupling, causing the two stirring shafts to rotate in opposite directions. As the stirring shafts rotate, the helical structure of the blades propels the material along the axial and circumferential directions of the stirring shafts. Blades near both ends of the cylinder push the material towards the center, while blades with a larger angle in the center of the cylinder strongly stir and shear the material, creating a complex circulation flow within the mixing cylinder for comprehensive mixing. The main blades, with their tilt angle and large surface area, generate strong axial pushing and radial stirring forces on the material, rapidly causing it to flow over a wide area within the cylinder. The secondary blades, with their serrated or corrugated structure, finely shear and disperse the material as it passes through, further refining the degree of mixing. Throughout the mixing process, the automated control system monitors the material status in real time through temperature, pressure, and material concentration sensors, and feeds the data back to the controller. The controller automatically adjusts operating parameters such as motor speed according to preset process parameters to ensure that the mixing process is stable and meets production requirements.

[0034] In summary, this utility model features a novel structural design, enabling materials to achieve composite axial and circumferential motion within the mixing drum. This effectively eliminates dead zones in the mixing process, ensuring thorough mixing and kneading of the materials, significantly improving mixing uniformity, and guaranteeing product quality.

[0035] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A double shaft counter-rotating kneader, characterized by, It comprises a base mechanism and a stirring mechanism; The base mechanism comprises a base body (1), a left support (2) and a right support (3), the left support (2) and the right support (3) are respectively installed on both sides of the base body (1); The stirring mechanism comprises a stirring cylinder (4), a support frame (5), a first stirring assembly and a second stirring assembly, the stirring cylinder (4) bottom is fixed on the upper end face of the base body (1) through the support frame (5), the first stirring assembly and the second stirring assembly are symmetrically installed on both sides of the inner cavity of the stirring cylinder (4); the upper end of the stirring cylinder (4) is installed with a feeding cylinder (6).

2. A double shaft counter-rotating kneader according to claim 1, characterized in that, The first stirring assembly and the second stirring assembly are completely consistent in structure, comprising a stirring shaft (8) and a combined paddle (9), one end of the stirring shaft (8) is connected with the inner side wall of the stirring cylinder (4) through a bearing seat (10), and the combined paddle (9) is installed on the outer wall of the stirring shaft (8).

3. A double shaft counter-rotating kneader according to claim 2, characterized in that, A support seat (11) is further installed on the base body (1), a motor (12), a speed reducer (13) and a coupling (14) are respectively installed on the support seat (11), the motor (12) is connected with the input shaft of the speed reducer (13) through the coupling (14), and the output shaft of the speed reducer (13) is connected with one end of the two stirring shafts (8) through the coupling (14).

4. A double shaft counter-rotating kneader according to claim 2, wherein The combined paddle (9) comprises a main paddle (15), a secondary paddle (16) and a spiral paddle (17), the main paddle (15) adopts a straight plate structure, the main paddle (15) is perpendicular to the outer wall of the stirring shaft (8), the secondary paddle (16) is installed on both sides of the main paddle (15), the secondary paddle (16) is in a small sawtooth shape or a corrugated shape, the spiral paddle (17) is installed on the outer wall of the stirring shaft (8), the paddle angle of the spiral paddle (17) near both ends of the stirring cylinder is small, and the paddle angle of the spiral paddle (17) at the middle part of the cylinder is large.

5. A double shaft counter-rotating kneader according to claim 1, wherein A material uniformizing assembly (7) is further installed in the feeding cylinder (6), the material uniformizing assembly (7) comprises a rotating shaft (18), a material uniformizing plate (19) and a servo motor (20), both ends of the rotating shaft (18) are respectively installed on the inner side wall of the feeding cylinder (6) through bearing seats, the material uniformizing plate (19) is installed on the outer wall of the rotating shaft (18), a plurality of through holes (21) are uniformly distributed on the surface of the material uniformizing plate (19), the servo motor (20) is installed on the outer wall of the feeding cylinder (6), and the output shaft of the servo motor (20) is in transmission connection with the end part of the rotating shaft (18).

6. A double shaft counter-rotating kneader according to claim 1, wherein Temperature sensors (22), pressure sensors (23) and material concentration sensors (24) are further arranged in the stirring cylinder (4), the temperature sensors (22), the pressure sensors (23) and the material concentration sensors (24) are respectively connected with a controller (25) installed on the base body (1), and the controller (25) is further connected with the motor (12), the speed reducer (13) and the servo motor (20).

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