Carbon paste homogenizing and kneading machine

Abstract

The utility model relates to a carbon paste homogenizing kneading machine, and belongs to the technical field of kneading equipment. The mixing and kneading device comprises a mixing and kneading cylinder body and mixing and kneading stirring cutters arranged in the mixing and kneading cylinder body, the mixing and kneading stirring cutters rotate to be used for mixing materials in the mixing and kneading cylinder body, the mixing and kneading stirring cutters comprise the left stirring cutter and the right stirring cutter, the left stirring cutter and the right stirring cutter both rotate outwards, and under the action of the left stirring cutter and the right stirring cutter, the materials in the mixing and kneading cylinder body are mixed. Materials in the mixing and kneading cylinder body do axial movement from the middle part of the mixing and kneading cylinder body to the two ends of the mixing and kneading cylinder body. The left stirring blade and the right stirring blade rotate in opposite directions and rotate outwards, and materials move from the middle of the mixing and kneading cylinder body to the two ends in the axial direction, so that the axial movement direction of the materials is changed, the distributed, distributed and kneading type mixing effect is enhanced, the efficient, uniform and high-quality mixing effect of the materials is achieved, and the mixing effect of the materials is improved. The mixing and kneading effect is enhanced, the mixing and kneading time is shortened, and the mixing and kneading efficiency and the final product quality of the mixed and kneaded materials are improved.

Description

Technical Field

[0001] This utility model relates to a carbon paste homogenizing and kneading machine, belonging to the technical field of kneading equipment. Background Technology

[0002] Carbon paste is made by mixing solid materials (such as carbonaceous materials) with binders under heating conditions. A kneader is a device that mixes solid materials (such as carbonaceous materials) and binders together at a certain temperature while applying shear force and squeezing force to achieve a kneading effect.

[0003] The kneader is a horizontal, twin-shaft, twin-chamber, parallel-type structure with two sets of agitators housed within the kneading chambers, their rotation axes arranged parallel to each other. During operation, the agitators are driven by a motor through a transmission system, rotating around their axes to move the materials in the mixture. The materials are mixed through the combined action of the agitators and the kneading chambers.

[0004] In existing mixing equipment, the axial movement of materials along the axis of the agitators is as follows: materials move from both ends of the mixing cylinder towards the center under the action of both agitators; or, a portion of the material moves from both ends of the cylinder towards the center under the action of one agitator, while another portion moves from the center of the cylinder towards both ends under the action of the other agitator. In the first method, because the material moves from both ends of the cylinder towards the center, it accumulates in the center, thus failing to create a reciprocating cyclic movement along the axis of the agitators. Furthermore, since the axial compression occurs between the materials, a strong axial squeezing effect cannot be applied, thus affecting the mixing process and consequently the mixing quality. In the second material movement mode, a portion of the material moves from both ends of the cylinder towards the middle, while another portion moves from the middle of the cylinder towards both ends. Compared to the first movement mode, the material's bidirectional movement improves the axial circulation of the material. Furthermore, the compression of some material occurs between the material and the fixed end plates of the mixing cylinder, improving the application of axial compression. Nevertheless, the second movement mode only achieves partial improvement, still exhibiting insufficient axial circulation and compression of the material. Therefore, it does not completely solve the problem of achieving good dispersion, distribution, and kneading mixing. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a carbon paste homogenizing and kneading machine.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A carbon paste homogenizing and kneading machine includes a kneading cylinder and a kneading blade disposed in the kneading cylinder. The kneading blade rotates to mix the material in the kneading cylinder. The kneading cylinder includes an end plate. The kneading blade includes a left blade and a right blade. Both the left blade and the right blade rotate outward. Under the action of the left blade and the right blade, the material in the kneading cylinder moves axially from the middle of the kneading cylinder to both ends of the kneading cylinder.

[0007] The beneficial effects of this invention are as follows: the left stirring blade rotates counterclockwise, and the right stirring blade rotates clockwise. The left and right stirring blades rotate in opposite directions and both rotate outwards. As the mixing blades rotate, the axial movement of the material moves from the middle of the mixing cylinder to both ends. The pushing action of the mixing blades along the axis of the blades shears, disperses, and mixes the material. This dispersion and mixing action allows new contact interfaces to be continuously formed between the mixed materials, achieving efficient dispersion and mixing. Simultaneously, the material moves towards both ends of the mixing cylinder under the axial push of the mixing blades. Under the combined action of the mixing blades and the two end plates of the mixing cylinder, the material is subjected to a strong squeezing and kneading action. This squeezing and kneading action ensures that the mixed materials are fully kneaded, achieving high-quality kneading and mixing. Furthermore, under the action of the mixing blades, the material moves to both ends of the mixing cylinder. As the material continues to move towards the end plates, the material near the ends is pushed upwards along the ends by the newly entering material in that area. The upwardly pushed material accumulates after reaching the upper surface of the overall material. Under the action of gravity, the material on the upper surface of the overall material moves from the end of the cylinder to the middle. After reaching the middle of the cylinder, it is subjected to the action of the rotating mixing blades. The material re-enters the rotation range of the blades from the upper surface and is pushed from the middle of the cylinder to both ends by the mixing blades, starting a new cycle. This forms a cyclical movement of the material along the axial direction of the mixing blades, ensuring the continuity of the mixing movement of the material in the mixing cylinder, strengthening the distributed mixing effect, and resulting in a better overall uniform mixing effect of the material. In addition to the aforementioned axial and cyclic movements, the material also undergoes radial movement along the rotation direction of the mixing blades under the rotational action of the mixing blades. The rotation of the mixing blades shears and disperses the material, continuously forming new contact interfaces between various mixtures to achieve efficient radial dispersion and mixing. Simultaneously, the radial reciprocating cyclic movement propelled by the rotating mixing blades ensures uniform radial distribution and mixing of the material. Furthermore, the combined action of the mixing blades and the mixing cylinder radially compresses and kneads the material, ensuring thorough kneading of the various mixtures and achieving high-quality radial kneading and mixing. Through these four material movement modes—axial movement, axial cyclic movement, radial movement, and radial cyclic movement—the flow and kneading effect of the material are improved, facilitating dispersion, distribution, and kneading, resulting in more thorough and uniform mixing. Moreover, since the mixing blades rotate outwards, the paste gathers towards the cylinder under the push of the two blades, thus strengthening the compression and kneading effect of the cylinder on the paste, effectively increasing the kneading intensity and consequently improving the kneading quality.Compared with the prior art, this utility model changes the axial movement direction of the material, thereby realizing the axial cyclic distribution and mixing movement of the material, strengthening the axial extrusion and kneading mixing action and the axial dispersion mixing movement of the material, thus achieving efficient, uniform and high-quality mixing of the material, realizing the purpose of strengthening the kneading effect, shortening the kneading time, improving the kneading efficiency and the final product quality of the kneaded material, as well as effectively improving the kneading strength and the kneading quality.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the end plate includes a front end plate and a rear end plate, and the left agitator includes a left front blade, a left rear blade and a left middle radial connecting the left front blade and the left rear blade. The left rear blade extends from the rear end plate side toward one end of the left middle radial in a left-hand spiral manner, and the left front blade extends from the other end of the left middle radial toward the front end plate side in a right-hand spiral manner.

[0010] The right agitator includes a right front blade, a right rear blade, and a right middle radial connecting the right front blade and the right rear blade. The right rear blade extends from the rear end plate side toward one end of the right middle radial in a right-hand spiral manner, and the right front blade extends from the other end of the right middle radial toward the front end plate side in a left-hand spiral manner.

[0011] The beneficial effects of adopting the above-mentioned further scheme are that the left rear blade of the left stirrer is a left-handed spiral and the left front blade is a right-handed spiral, the right rear blade of the right stirrer is a right-handed spiral and the right front blade is a left-handed spiral. The blades of the mixing blade adopt the above-mentioned spiral structure, and the left stirrer rotates counterclockwise and the right stirrer rotates clockwise. Both the left and right stirrers push the material to move from the middle to both ends of the mixing cylinder in the axial direction of the stirrer. Under the combined action of the left and right stirrers and the mixing cylinder, the material forms an axial circulation motion in the axial direction of the mixing blade, which strengthens the axial dispersion, distribution and kneading mixing effect. Together with the radial movement and radial circulation motion of the material formed by the rotation of the mixing blade, as well as its radial dispersion mixing, radial distribution mixing and radial kneading mixing effect, the material is efficiently, uniformly and of high quality mixed.

[0012] Furthermore, the left and right stirring blades are parallel and tangent to each other. The rotational speed of the left stirring blade is n1, and the rotational speed of the right stirring blade is n2. Then, n1 = n2 or n1 ≠ n2.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that the left and right agitators can be arranged side-by-side and tangentially, which can achieve better radial shearing dispersion and mixing of materials by agitator rotation. The left and right agitators are placed side by side, and there is a gap between the boundaries of the left and right agitators to allow space for their respective rotation. Since there is no interference during the tangential rotation of the left and right agitators, their rotation speeds can be the same or different, and can be selected and set according to actual needs.

[0014] Furthermore, the initial phase difference between the left and right stirring blades is 0 degrees, 90 degrees, 180 degrees, or 270 degrees.

[0015] The beneficial effect of adopting the above-mentioned further scheme is that the initial phase difference between the left and right stirring blades, based on the same end plate side position, is 0 degrees, 90 degrees, 180 degrees, or 270 degrees. This can ensure that during the operation of the equipment, the two stirring blades can achieve efficient, homogeneous, and high-quality kneading through a cyclical combination of relative positions, thus ensuring stable kneading quality.

[0016] Furthermore, the left and right stirring blades are arranged side by side and intersect each other. The rotational speed of the left stirring blade is n1, and the rotational speed of the right stirring blade is n2, so n1 = n2.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that the left and right agitators can also be arranged side-by-side and intersecting. The diameters of the left and right agitators are the same and greater than the center distance between them. When the left and right agitators rotate, their rotational ranges intersect, which can achieve a better radial distribution mixing effect of the agitator rotation on the material. To avoid interference at the intersection, the left and right agitators must rotate at synchronized speeds.

[0018] Furthermore, the phase difference between the left and right stirring blades is 90 degrees or 270 degrees.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that the left and right stirring blades have a phase difference of 90 degrees or 270 degrees based on the same end plate side position. The left and right stirring blades are set to be parallel, intersecting, and moving at the same speed, with a phase difference of 90 degrees or 270 degrees. This ensures that during the operation of the equipment, the two stirring blades will cycle through each other in a combination of positions to achieve efficient, homogeneous, and high-quality mixing, thus ensuring stable mixing quality.

[0020] Furthermore, the left front blade and the left rear blade have the same rotation diameter; and / or the right front blade and the right rear blade have the same rotation diameter.

[0021] The beneficial effects of adopting the above-mentioned further solution are that the outer rotating bodies of both the left and right agitators are cylindrical, and the outer rotating circle of the mixing agitator can maintain the same radial clearance with the inner wall of the mixing cylinder in the axial direction. This ensures that the agitator can make the material in the mixing cylinder move fully and mix thoroughly. At the same time, it is beneficial for the agitator and the cylinder to jointly apply radial kneading and mixing action to the material, improve the kneading quality, and not significantly increase the equipment load, while ensuring the stability of equipment operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the left and right stirring blades in Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of the main structure of the left and right stirring blades in Embodiment 1 of this utility model;

[0025] Figure 4 for Figure 3 A top-view structural diagram;

[0026] Figure 5 for Figure 4 Cross-sectional view along the AA direction;

[0027] Figure 6 for Figure 4 Cross-sectional view along the BB direction;

[0028] Figure 7 for Figure 4 Cross-sectional view along the CC direction;

[0029] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0030] Figure 9 This is a three-dimensional structural diagram of the left and right stirring blades in Embodiment 2 of this utility model;

[0031] Figure 10 This is a top view of the left and right stirring blades in Embodiment 2 of this utility model;

[0032] Figure 11 for Figure 10 A cross-sectional view along the DD direction;

[0033] Figure 12 for Figure 10 A cross-sectional view along the EE direction;

[0034] Figure 13 for Figure 10 A cross-sectional view along the FF direction;

[0035] Figure 14 This is a top view of Embodiment 3 of the present invention.

[0036] Figure 15 for Figure 14 A cross-sectional view along the GG direction;

[0037] Figure 16 for Figure 14 A cross-sectional view along the HH direction;

[0038] Figure 17 for Figure 14 A sectional view along direction II;

[0039] Figure 18 This is a schematic diagram of the structure of the left and right stirring blades in Embodiment 3 of this utility model;

[0040] Figure 19 This is a schematic diagram of the structure of Embodiment 4 of this utility model;

[0041] Figure 20 This is a schematic diagram of the structure of the left and right stirring blades in Embodiment 4 of this utility model;

[0042] In the diagram, 1 is the mixing cylinder; 11 is the front end plate; 12 is the rear end plate; 2 is the left agitator; 21 is the left front blade; 22 is the left rear blade; 23 is the left middle spoke; 3 is the right agitator; 31 is the right front blade; 32 is the right rear blade; and 33 is the right middle spoke. Detailed Implementation

[0043] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0044] Example 1, such as Figures 1-7 As shown, a carbon paste homogenizing mixer includes a mixing cylinder 1 and mixing blades disposed within the mixing cylinder 1. The mixing blades rotate to mix the material within the mixing cylinder 1. The mixing cylinder 1 includes end plates, and the mixing blades include a left blade 2 and a right blade 3. Both the left blade 2 and the right blade 3 rotate outwards. Under the action of the left blade 2 and the right blade 3, the material within the mixing cylinder 1 undergoes axial movement from the middle of the mixing cylinder 1 towards both ends. Because both blades rotate outwards, the paste is pushed towards the cylinder by the two blades, thus strengthening the compression and kneading effect of the cylinder on the paste, effectively increasing the kneading intensity, and consequently improving the kneading quality.

[0045] The end plate includes a front end plate 11 and a rear end plate 12. The left agitator 2 includes a left front blade 21, a left rear blade 22 and a left central radial 23 connecting the left front blade 21 and the left rear blade 22. The left rear blade 22 extends from the rear end plate 12 toward one end of the left central radial 23 in a left-hand spiral manner, and the left front blade 21 extends from the other end of the left central radial 23 toward the front end plate 11 in a right-hand spiral manner.

[0046] The right agitator 3 includes a right front blade 31, a right rear blade 32, and a right middle radial 33 connecting the right front blade 31 and the right rear blade 32. The right rear blade 32 extends from the rear end plate 12 toward one end of the right middle radial 33 in a right-hand spiral manner, and the right front blade 31 extends from the other end of the right middle radial 33 toward the front end plate 11 in a left-hand spiral manner. The left rear blade of the left agitator is a left-handed spiral, and the left front blade is a right-handed spiral. The right rear blade of the right agitator is a right-handed spiral, and the right front blade is a left-handed spiral. The blades of the mixing agitator adopt the above-mentioned spiral structure. The left agitator rotates counterclockwise, and the right agitator rotates clockwise. Both agitators push the material from the middle to both ends of the mixing cylinder in the axial direction of the agitator. Under the combined action of the left and right agitators and the mixing cylinder, the material forms an axial circulation motion in the axial direction of the mixing agitator. This strengthens the axial dispersion, distribution and kneading mixing effect. Together with the radial movement and radial circulation motion of the material formed by the rotation of the mixing agitator, as well as the radial dispersion mixing, radial distribution mixing and radial kneading mixing effect, the material is efficiently, uniformly and of high quality mixed.

[0047] The left and right stirring blades 2 and 3 are placed side-by-side and tangential. The rotational speed of the left stirring blade 2 is n1, and the rotational speed of the right stirring blade 3 is n2, where n1 = n2 or n1 ≠ n2. This arrangement achieves better radial shearing and dispersing mixing of the material through the rotating blades. The left and right stirring blades are placed side-by-side with a gap between their boundaries to allow space for their respective rotations. Since there is no interference during the tangential rotation of the left and right stirring blades, their rotational speeds can be the same or different, depending on the actual requirements.

[0048] The left front blade 21 and the left rear blade 22 have the same rotation diameter; and / or the right front blade 31 and the right rear blade 32 have the same rotation diameter. The outer rotating bodies of the left and right agitators are both cylinders. The outer rotating circle of the mixing agitator can maintain the same radial clearance with the inner wall of the mixing cylinder in the axial direction, thereby ensuring that the agitator can fully move and mix the material in the mixing cylinder. At the same time, it is beneficial for the agitator and the cylinder to jointly apply radial kneading and mixing action to the material, improving the kneading quality, without significantly increasing the equipment load, and ensuring the stability of equipment operation.

[0049] The initial phase difference between the left stirring blade 2 and the right stirring blade 3 is 90 degrees. The initial phase difference between the left stirring blade 2 and the right stirring blade 3, based on their positions on the same end plate side, is 90 degrees. The left stirring blade 2 and the right stirring blade 3 are arranged side-by-side with tangential and different speeds or tangential and the same speed, and the initial phase difference can be 90 degrees. This ensures that during equipment operation, the two stirring blades can achieve efficient, homogeneous, and high-quality mixing through cyclical combinations of their relative positions, guaranteeing stable mixing quality.

[0050] Example 2, as Figures 8-13 As shown, the initial phase difference between the left stirring blade 2 and the right stirring blade 3 is 180 degrees. The initial phase difference between the left stirring blade 2 and the right stirring blade 3, based on their positions on the same end plate side, is 180 degrees. The left stirring blade 2 and the right stirring blade 3 are arranged side-by-side with tangential and different speeds or tangential and the same speed, and the initial phase difference can be 180 degrees. This ensures that during the operation of the equipment, the two stirring blades can achieve efficient, homogeneous, and high-quality mixing through cyclical combinations of their relative positions, guaranteeing stable mixing quality. The remaining structure is the same as in Embodiment 1 and will not be described further here.

[0051] Example 3, as Figures 14-18 As shown, the left stirring blade 2 and the right stirring blade 3 are arranged side by side and intersect. The rotational speed of the left stirring blade 2 is n1, and the rotational speed of the right stirring blade 3 is n2, so n1 = n2. The diameters of the left and right stirring blades are the same and greater than the center distance between them. When the left and right stirring blades rotate, their rotational ranges intersect, which can achieve a better radial distribution and mixing effect on the material. To avoid interference at the intersection, the left and right stirring blades must rotate at synchronized speeds.

[0052] The phase difference between the left stirring blade 2 and the right stirring blade 3 is 90 degrees. For example... Figure 14 As shown, the left center radial section 23 of the left agitator 2 is nearly horizontal, while the right center radial section 33 of the right agitator 3 is nearly vertical. The left agitator 2 and the right agitator 3 are installed side by side at a 90-degree angle to each other. This arrangement prevents interference between the left and right agitators and allows for rapid radial circulation and exchange of material within the mixing cylinder 1 when the left and right agitators 2 and 3 are in operation, resulting in better radial distribution and mixing of the material. The remaining structure is the same as in Example 1 and will not be described further here.

[0053] Example 4, as Figures 19-20 As shown, the left stirring blade 2 and the right stirring blade 3 are arranged side by side and intersect. The rotational speed of the left stirring blade 2 is n1, and the rotational speed of the right stirring blade 3 is n2, so n1 = n2. The phase difference between the left stirring blade 2 and the right stirring blade 3 is 90 degrees. Figure 19 As shown, the left middle radial section 23 of the left stirring blade 2 is nearly vertical, and the right middle radial section 33 of the right stirring blade 3 is nearly horizontal. The rest of the structure is the same as in Example 3, and will not be described again here.

[0054] Taking carbon paste mixing as an example; the mixing machine is configured with a total mixing cylinder capacity of 5600L, a working volume of 4000L, and a stirring blade speed of 12 rpm, with the left and right stirring blades intersecting at equal speeds. The same carbon raw material is used and mixed for 20 minutes. The carbon material obtained using this invention's mixing machine, after being shaped by a vibration molding machine and calcined, produces a prebaked anode with an apparent density of 1.59 g / cm³. 3 ;

[0055] Using existing mixing machines and the same carbon raw materials, the carbon materials produced, after being shaped by a vibration molding machine and calcined, have an apparent density of 1.56 g / cm³. 3 .

[0056] The apparent density value shows the density difference between the two different mixing techniques used in the final prebaked anode product. Under the same other process conditions, the technology of this invention increases the apparent density of the final prebaked anode product by 0.03 g / cm³. 3 This demonstrates the kneading effect of the present invention's kneading machine, and improves the quality of the final product by enhancing the kneading effect.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A carbon paste homogenizing mixer, comprising a mixing cylinder (1) and mixing blades disposed within the mixing cylinder (1), wherein the mixing blades rotate to mix the materials within the mixing cylinder (1), and the mixing cylinder includes end plates, characterized in that, The kneading stirrer comprises a left stirrer (2) and a right stirrer (3), both rotating outwardly, under the action of the left stirrer (2) and the right stirrer (3), the material in the kneading cylinder (1) moves in an axial direction from the middle of the kneading cylinder to both ends of the kneading cylinder (1).

2. The carbon paste homogenizing kneader according to claim 1, characterized by The end plate comprises a front end plate (11) and a rear end plate (12), the left stirrer (2) comprises a left front blade (21), a left rear blade (22) and a left middle spoke (23) connecting the left front blade (21) and the left rear blade (22), the left rear blade (22) extends from one end of the left middle spoke (23) to the rear end plate (12) in a left-handed helix, and the left front blade (21) extends from the other end of the left middle spoke (23) to the front end plate (11) in a right-handed helix. The right stirrer (3) comprises a right front blade (31), a right rear blade (32) and a right middle spoke (33) connecting the right front blade (31) and the right rear blade (32), the right rear blade (32) extends from one end of the right middle spoke (33) to the rear end plate (12) in a right-handed helix, and the right front blade (31) extends from the other end of the right middle spoke (33) to the front end plate (11) in a left-handed helix.

3. The carbon paste homogenizer of claim 1 or 2, wherein The left stirrer (2) and the right stirrer (3) are tangent to each other, the rotational speed of the left stirrer (2) is n1, and the rotational speed of the right stirrer (3) is n2, then n1 = n2 or n1 ≠ n2.

4. The carbon paste homogenizing kneader according to claim 3, characterized by The initial phase difference between the left stirrer (2) and the right stirrer (3) is 0 degrees, 90 degrees, 180 degrees or 270 degrees.

5. The carbon paste homogenizer of claim 1 or 2, wherein The left stirrer (2) and the right stirrer (3) intersect side by side, the rotational speed of the left stirrer (2) is n1, and the rotational speed of the right stirrer (3) is n2, then n1 = n2.

6. The carbon paste homogenizing kneader according to claim 5, characterized by The phase difference between the left stirrer (2) and the right stirrer (3) is 90 degrees or 270 degrees.

7. The carbon paste homogenizing kneader according to claim 2, characterized by The left front blade (21) and the left rear blade (22) have the same rotational diameter; and / or the right front blade (31) and the right rear blade (32) have the same rotational diameter.

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