Roller device for enhancing material mixing or separation and working method

Abstract

The invention relates to a roller device for enhancing material mixing or separation and a working method. The roller device comprises a roller body, a baffle, a rolling shaft and a driving device. The rolling shaft is used for fixing the roller body; the baffle is arranged in the center inside the roller body. An output shaft of the driving device is connected with the rolling shaft and used for driving the roller body to rotate. The second driving device is arranged on the back face of the roller body, an output shaft of the second driving device is connected with the baffle and used for driving the baffle to rotate, and the rotating direction of the baffle is opposite to that of the roller body. Compared with the prior art, the non-free flow area can be destroyed through fluctuation formed by reverse interactive rolling, so that the material mixing efficiency is improved. When the baffle rotates counterclockwise, a complex flow pattern is induced within the drum. The flowing modes can form strong shearing force in the roller to break the aggregation phenomenon of the particles, so that uniform mixing or separation is realized.

Description

Technical Field

[0001] The invention relates to the technical field of drum mixers, and in particular to a drum device and a working method for enhancing material mixing or separation. Background Art

[0002] In industrial production, the mixing of materials is one of the key operations, but due to the differences in the physical and chemical properties of the materials, the problem of uneven material distribution often occurs, resulting in inconsistent quality of the final product. As a common equipment, drum mixers are widely used in processes such as material mixing, drying and grinding. However, traditional drum mixers often have problems such as too low drum speed, inappropriate drum inclination angle, and unreasonable design of mixing equipment, which often lead to uneven mixing and low processing efficiency during material processing. The traditional drum mixer includes a drum, a motor, a transmission device, a reducer, a control panel and other devices. Its internal structure and operating parameters have an important influence on the mixing or separation effect, and cannot be adaptively adjusted for different materials. Therefore, a new design is needed to improve the performance of existing drum mixer equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a roller device and working method for enhancing material mixing or separation in order to overcome the defects of the above-mentioned prior art. Through the undulation formed by reverse alternating rolling, the present invention can destroy the non-free flow area, thereby improving the mixing efficiency of the materials.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] The present invention provides a drum device for enhancing material mixing or separation, comprising a drum body, a baffle, a roller and a driving device;

[0006] The roller includes a first roller and a second roller, wherein the first roller and the second roller are respectively fixed to two sides of the roller body and are used to fix the roller body;

[0007] The baffle is arranged at the center of the drum body;

[0008] The driving device comprises a first set of driving devices and a second set of driving devices, wherein the output shaft of the first set of driving devices is connected to the roller shaft and is used to drive the roller body to rotate;

[0009] The second set of driving devices is arranged on the back side of the drum body, and the output shaft of the second set of driving devices is connected to the baffle plate to drive the baffle plate to rotate. The rotation direction of the baffle plate is opposite to the rotation direction of the drum body.

[0010] Furthermore, the first set of driving devices includes a first driving motor and a turntable, the output shaft of the first driving motor is connected to the turntable, and the turntable is drivingly connected to one end of the connecting shaft on the first roller.

[0011] Furthermore, the first set of driving devices is connected to the second roller by gears and belts, so that the movement direction of the second roller is the same as that of the first set of driving devices.

[0012] Furthermore, the baffle passes through a through hole in the center of the drum body and is connected to a second set of driving devices, so that the baffle rotates clockwise or counterclockwise.

[0013] Furthermore, the baffle has a shape of one of a fan shape, a straight shape, an S shape, a C shape, and an extended shape of the S shape.

[0014] Furthermore, the roller comprises a roller body, a base and a connecting shaft, the connecting shaft passes through the base and the through holes in the center of the roller body in sequence, and the base is provided with two, which are respectively arranged on both sides of the roller body;

[0015] The outer wall surface of the roller body on the first roller is in close contact with the outer wall surface of the drum body, and the torque is transmitted through friction.

[0016] Furthermore, the base includes a first base and a second base, one end of the connecting shaft passes through the first base, the roller body, and the second base in sequence and is fixed on the second base, and the other end is transmission-connected to the driving device.

[0017] Furthermore, the second set of driving devices includes a second driving motor, the output shaft of the second driving motor passes through the through hole in the center of the drum body and is connected to the baffle, and the second driving motor is plugged into the back side of the drum body.

[0018] Furthermore, the sides of the drum body are provided with side plates, and the side plates are used for feeding.

[0019] The present invention also provides a working method of a drum device for enhancing material mixing or separation, comprising the following steps:

[0020] S1: Assemble the drum body, baffle, roller and driving device, adjust the baffle position and drum speed so that the baffle and drum move in opposite directions to obtain the best mixing or separation effect;

[0021] S2: Open the feed side plate, add the material, and start the drive device. The material undergoes a complex motion trajectory under the rotation of the drum and the shearing action of the baffle, thereby achieving full mixing or separation.

[0022] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0023] 1. Inside the drum, the present invention can destroy the non-free flow area through the waves formed by reverse interactive rolling, thereby improving the mixing efficiency of the materials. When the baffle rotates counterclockwise, complex flow patterns are induced in the drum, including vortex and rotational flow of the fluid. These flow patterns will form strong shear forces inside the drum. The shear force will cause the particles in the material to experience different movement paths, breaking the aggregation of particles, thereby achieving uniform mixing.

[0024] 2. The present invention improves the separation efficiency of materials by changing the movement mode of the drum and the baffle. The particles under the action of shear force will experience relative slippage, resulting in rearrangement between the particles, thereby enhancing the mixing effect of the materials. The shear force causes the particles to move along different trajectories in the fluid, thereby accelerating the mixing speed. The rotation of the drum and the clockwise rotation of the baffle will produce relative motion, combined with the influence of centrifugal effect and friction, to achieve the separation of materials of different densities. The rotation speed of the drum and the rotation speed of the baffle need to be adjusted according to the properties of the material and the separation requirements to optimize the separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A front view of a drum device for enhancing material mixing or separation;

[0026] Figure 2 A rear view of a drum device for enhancing mixing or separation of materials;

[0027] Figure 3 A side view of a drum device for enhancing mixing or separation of materials;

[0028] Figure 4 A top view of a drum device for enhancing material mixing or separation;

[0029] Figure 5 It is a front view of the structure of the roller body and the roller in Example 1;

[0030] Figure 6 It is a side view of the structure of the roller body and the roller in Example 1;

[0031] Figure 7 Schematic diagram of the structure of baffles of different shapes in Example 1.

[0032] Description of the markings in the figure:

[0033] 1- roller body, 2- baffle, 3- first roller, 4- second roller, 5- first set of driving device, 6- second set of driving device. DETAILED DESCRIPTION

[0034] The specific implementation methods of the present invention are described in detail below through examples. These examples are implemented on the premise of the scheme described in the present invention, and provide detailed implementation methods and specific operating processes, but the protection scope of the present invention is not limited to the following examples.

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Any features such as component models, material names, connection structures, preparation methods, materials, structures or composition ratios not clearly described in this technical solution are deemed to be common technical features disclosed in the prior art.

[0036] When baffle 2 rotates clockwise, the fluid movement and shear force generated mainly cause the particles in the material to be pushed to the edge of the drum, thereby achieving material separation. When baffle 2 rotates clockwise, the following flow characteristics will be induced:

[0037] Clockwise rotation generates a centrifugal force that moves the particles in the material toward the periphery of the drum. The centrifugal force can be expressed by the following formula:

[0038] F c =m·ω 2 ·r

[0039] Where m is the mass of the particle, ω is the angular velocity of the baffle 2, and r is the radial distance from the particle to the center of the drum. Clockwise rotation induces an edge flow pattern. In this pattern, the fluid and particles in the drum flow toward the outer edge, resulting in relatively fewer particles in the center of the drum. This flow pattern helps separation because the centrifugal force has the greatest effect at the edge of the drum, and the heavier particles are concentrated at the edge, while the lighter particles are relatively rare. The vortex causes the fluid to produce a complex motion pattern in a local area, thereby enhancing the mixing effect of the material.

[0040] Counterclockwise mixing: When the baffle 2 rotates counterclockwise, the fluid movement and shear force will cause the particles in the material to mix violently, promoting uniform mixing of the materials. Counterclockwise rotation will produce strong shear force, causing the materials to be sheared and stirred violently in the drum. This shear force increases the relative movement between particles and promotes mixing. The shear force τ can be calculated using the following formula:

[0041]

[0042] Where η is the viscosity of the fluid, and θν / θy is the gradient of the velocity in the vertical direction. The flow pattern generated by the counterclockwise rotation forms an inward flow field, which causes the material to flow and rearrange repeatedly in the drum. This flow pattern helps the material to mix evenly because it breaks the original flow symmetry and causes the particles to experience different movement paths throughout the mixing chamber.

[0043] The functions of separation and mixing can be achieved by rotating the baffle 2 clockwise and counterclockwise in different motion modes. Clockwise rotation mainly achieves material separation through centrifugal force and flow pattern change, while counterclockwise rotation achieves uniform mixing of materials by increasing shear force and changing the flow field. This design allows multifunctional material processing in the same device, improving the flexibility and efficiency of the device.

[0044] Example 1

[0045] Based on the above principle, this embodiment provides a drum device for enhancing material mixing or separation, the device comprising a drum body 1, a baffle 2, a roller and a driving device, such as Figures 1 to 6 shown.

[0046] The roller includes a first roller 3 and a second roller 4, which are respectively fixed on both sides of the roller body 1 for fixing the roller body 1. The roller includes a roller body, a base and a connecting shaft, which passes through the base and the through hole in the center of the roller body in sequence, and the base is provided with two, which are respectively arranged on both sides of the roller body. The base includes a first base and a second base, one end of the connecting shaft passes through the first base, the roller body, and the second base in sequence, and is fixed on the second base, and the other end is transmission-connected to the driving device.

[0047] The baffle 2 is arranged at the center of the drum body 1. The baffle 2 passes through the through hole at the center of the drum body 1 and is connected to the second set of driving devices 6, so that the baffle 2 rotates clockwise or counterclockwise. The shape of the baffle 2 is fan-shaped, such as Figure 7 The rotation direction of the baffle 2 is opposite to the rotation direction of the drum body 1.

[0048] The driving device includes a first driving device 5 and a second driving device 6. The first driving device 5 includes a first driving motor and a turntable, wherein the output shaft of the first driving motor is connected to the turntable, and the turntable is drivingly connected to one end of the connecting shaft on the first roller 3. The first driving device 5 is drivingly connected to the second roller 4 by gears and belts, so that the movement direction of the second roller 4 is the same as that of the first driving device 5, and is used to drive the drum body 1 to rotate.

[0049] The second driving device 6 is arranged on the back of the drum body 1, and the output shaft of the second driving device 6 is connected to the baffle 2, so as to drive the baffle 2 to rotate. The second driving device 6 includes a second driving motor, the output shaft of the second driving motor passes through the through hole in the center of the drum body 1 and is connected to the baffle 2, and the second driving motor is plugged into the back of the drum body 1.

[0050] Side plates are provided on the sides of the drum body 1, and the side plates are used for feeding.

[0051] Example 2

[0052] This embodiment provides a working method of a drum device for enhancing material mixing, and the working method comprises the following steps:

[0053] S1: The drum body 1 is mounted on the roller at the bottom, the baffle 2 is fixed to the center of the drum through the second driving device, and the side panels are closed.

[0054] S2: Turn on the second driving device to make the baffle 2 start to rotate, and adjust the position of the baffle 2 to optimize the mixing effect. Turn on the first driving device to make the drum rotate, set a suitable speed, and turn off the driving device after completion.

[0055] The counterclockwise rotation of baffle 2 changes the flow pattern of the fluid in the cavity. When baffle 2 rotates counterclockwise in the drum, it changes the flow pattern of the fluid in the cavity. Specifically, the rotation of baffle 2 causes the streamlines of the fluid to change, thereby causing the vortex of the fluid and the reorganization of the flow pattern. The fluid flow pattern can be described by the velocity field of the fluid. The rotation of baffle 2 causes the change of the fluid velocity field. Assuming the angular velocity of baffle 2 is ω, in the polar coordinate system, the velocity field ν of the fluid can be expressed as:

[0056] ν=ν r +ν θ

[0057] Among them, ν r is the radial velocity component, ν θ is the tangential velocity component.

[0058] The rotation of the baffle 2 causes an increase in the tangential velocity, which changes the flow pattern of the fluid in the chamber. θ It can be expressed by the following formula:

[0059] ν θ =γω

[0060] Where γ is the radial distance from the center of the drum, and ω is the angular velocity of baffle 2. As baffle 2 rotates, the fluid forms a vortex near baffle 2, causing the fluid flow pattern to change from a simple radial flow to a more complex rotational flow. This rotational flow pattern helps the mixing of materials because it breaks the original flow symmetry.

[0061] When the baffle 2 starts to rotate, it will form a local flow field in the material, so that the particles of the material are subjected to shear force. The shear force generated by this rotation will cause the particles to move relative to each other, resulting in the flow and mixing of the material. This flow field is caused by the fluid movement driven by the rotation of the baffle 2. The local flow field can be explained by the vortex theory in fluid dynamics. The intensity of the local flow field can be expressed by the vortex intensity. The vortex intensity Γ can be calculated using the following formula:

[0062] Γ=∮ c ·ν·dl

[0063] Where C is the closed path around the vortex, ν is the velocity vector of the fluid, and dl is a tiny line element on the path.

[0064] The flow field generated by the rotation of the baffle 2 usually manifests as one or more vortices, which change the local flow characteristics of the material and make the particles subject to different fluid shear forces. The vortices cause the fluid to produce complex movement patterns in the local area, thereby enhancing the mixing effect of the material. Shear force refers to the force generated in the fluid due to the velocity gradient. The shear force τ can be calculated using the following formula:

[0065]

[0066] Where η is the viscosity of the fluid and θν / θy is the gradient of the velocity in the vertical direction. The flow caused by the counterclockwise rotation will also form vortices in the material, which will produce a strong mixing effect in the local area. The presence of vortices causes the particles in the material to be subjected to complex shearing, further promoting uniform mixing.

[0067] S3: Material addition: Open the feed side plate, add the material, close the side plate again, and start the first and second drive devices at the same time. During this process, the particles will experience different movement paths so that all parts of the material can be fully stirred. When baffle 2 rotates in S2, it not only changes the flow direction of the material, but also generates a strong shear force. This shear force acts on the particles, causing the relative positions of the particles to change, further promoting mixing. Under the influence of baffle 2, the material will experience violent flow and rearrangement, which helps to break the aggregation of the material so that the particles can be more evenly distributed in the mixing chamber.

[0068] S4: Mixing process: The material undergoes a complex motion trajectory under the action of the drum's rotation and the baffle 2's shearing, thereby achieving rapid and uniform mixing. The material undergoes a complex motion trajectory under the combined action of the drum and the baffle 2. The movement of the material includes not only the rotation of the drum, but also the shear force generated by the baffle 2. During this mixing process, the material is affected by both the centrifugal force and the shear force generated by the baffle 2, causing the relative positions of the particles to constantly change. This comprehensive motion pattern including the effects of flow, shear, and gravity results in rapid and uniform mixing of the material in the cavity.

[0069] Example 3

[0070] This embodiment provides a working method of a drum device for enhancing material separation, and the working method comprises the following steps:

[0071] S1: Installation and preparation: The drum is installed on the bottom roller, the baffle 2 is fixed to the center of the drum through the second driving device, and the side panel is closed.

[0072] S2: Movement of baffle 2: Turn on the second drive device to rotate baffle 2, and adjust the position of baffle 2 to optimize its effect; turn on the first drive device to rotate the drum to form a relative movement with baffle 2, and adjust the rotation speed to optimize material separation.

[0073] S3: Material addition: Open the feed side plate, add the material, close the side plate again, and start the first and second drive devices at the same time. At this time, the material is in relative motion, combined with the centrifugal effect caused by the speed difference, to separate the materials of different densities, or due to the influence of friction, the friction between the material and the inner wall of the drum and the baffle 2 will affect the movement speed of the material. Materials with higher density move slower due to greater friction and centrifugal force, while materials with lower density move faster. The difference in friction makes the movement behavior of the material in the drum more complicated, which helps to achieve effective separation. The centrifugal force can be expressed by the following formula:

[0074] F c =m·ω 2 ·r

[0075] Where m is the mass of the particle, ω is the angular velocity of the baffle 2, and r is the radial distance from the particle to the center of the drum. Clockwise rotation induces an edge flow pattern. In this pattern, the fluid and particles in the drum flow toward the outer edge, resulting in relatively fewer particles in the center of the drum. This flow pattern helps separation because the centrifugal force has the greatest effect at the edge of the drum, and the heavier particles are concentrated at the edge, while the lighter particles are relatively rare. The vortex causes the fluid to produce a complex motion pattern in a local area, thereby enhancing the separation effect of the material.

[0076] The baffle 2 adjusts its position by rotating clockwise during movement to help guide the direction and speed of the material. If the baffle 2 is not positioned properly, the material flow direction will change, affecting the separation effect. The position of the baffle 2 must be accurate to ensure that it matches the movement of the drum, thereby optimizing the separation process of the material.

[0077] Effect of misalignment: If there is misalignment between the baffle 2 and the drum, the material will be subjected to irregular forces during the separation process. This misalignment may cause uneven flow of the material in the drum, and may even cause the materials to mix rather than separate. Therefore, ensuring the correct docking of the baffle 2 and the drum is the key to improving separation efficiency.

[0078] The speed of the drum and the baffle can be regulated by two sets of drive devices respectively, and the drum can be regulated in forward and reverse directions by two sets of drive devices. In addition, the baffle can be adjusted in angle when the baffle is installed on the drive device, and adjusted according to the required application, or the baffle can be replaced, and replaced with a baffle of different angles or shapes to improve the separation efficiency of the materials.

[0079] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A drum device for enhancing material mixing or separation, characterized in that: It comprises a roller body (1), a baffle (2), a roller shaft and a driving device; The rollers include a first roller (3) and a second roller (4), wherein the first roller (3) and the second roller (4) are respectively fixed to two sides of the roller body (1) and are used to fix the roller body (1); The baffle (2) is arranged at the center inside the drum body (1); The driving device comprises a first set of driving devices (5) and a second set of driving devices (6); the output shaft of the first set of driving devices (5) is connected to the roller shaft and is used to drive the roller body (1) to rotate; The second set of driving devices (6) is arranged on the back side of the drum body (1); the output shaft of the second set of driving devices (6) is connected to the baffle plate (2) and is used to drive the baffle plate (2) to rotate; the rotation direction of the baffle plate (2) is opposite to the rotation direction of the drum body (1).

2. A drum device for enhancing material mixing or separation according to claim 1, characterized in that: The first set of driving devices (5) comprises a first driving motor and a rotating disk, wherein the output shaft of the first driving motor is connected to the rotating disk, and the rotating disk is drivingly connected to one end of a connecting shaft on the first roller (3).

3. A drum device for enhancing material mixing or separation according to claim 1, characterized in that: The first set of driving devices (5) is connected to the second roller (4) by means of gears and belts, so that the movement direction of the second roller (4) is the same as that of the first set of driving devices (5).

4. A drum device for enhancing material mixing or separation according to claim 1, characterized in that: The baffle (2) passes through a through hole in the center of the drum body (1) and is connected to a second set of driving devices (6), so that the baffle (2) rotates clockwise or counterclockwise.

5. A drum device for enhancing material mixing or separation according to claim 1, characterized in that: The baffle (2) has a shape of a fan, a straight line, an S-shape, a C-shape, and an extended S-shape.

6. A drum device for enhancing material mixing or separation according to claim 1, characterized in that: The roller comprises a roller body, a base and a connecting shaft, wherein the connecting shaft passes through the base and the through holes in the center of the roller body in sequence, and the base is provided with two, which are respectively arranged on both sides of the roller body; The outer wall surface of the roller body on the first roller is in close contact with the outer wall surface of the drum body, and the torque is transmitted through friction.

7. A drum device for enhancing material mixing or separation according to claim 6, characterized in that: The base comprises a first base and a second base. One end of the connecting shaft passes through the first base, the roller body and the second base in sequence and is fixed on the second base. The other end of the connecting shaft is transmission-connected to the driving device.

8. A drum device for enhancing material mixing or separation according to claim 1, characterized in that: The second drive device (6) comprises a second drive motor, the output shaft of the second drive motor passes through the through hole in the center of the drum body (1) and is connected to the baffle (2), and the second drive motor is plugged into the back side of the drum body (1).

9. A drum device for enhancing material mixing or separation according to claim 1, characterized in that: The side edges of the drum body (1) are provided with side plates, and the side plates are used for feeding.

10. A method for operating a drum device for enhancing material mixing or separation, characterized in that: The following steps are involved: S1: Assemble the drum body (1), the baffle (2), the roller and the driving device, adjust the position of the baffle (2) and the speed of the drum so that the movement directions of the baffle (2) and the drum are opposite to each other, so as to obtain the best mixing or separation effect; S2: Open the feed side plate, add the material, and start the drive device. Under the rotation of the drum and the shearing action of the baffle (2), the material undergoes a complex motion trajectory, thereby achieving full mixing or separation.

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