A slurry continuous mixing device and method based on self-cooperation of topological curved cylindrical paddles

Abstract

The present invention relates to a slurry continuous mixing device and method based on the self-cooperation of topological curved cylindrical paddles. A cylindrical kettle provided with a feed port and a discharge port is coaxially mounted with a hollow spiral conveying cylinder. A topological curved cylindrical paddle is arranged in the hollow spiral conveying cylinder. The topological curved cylindrical paddle includes a main topological curved cylindrical paddle and a secondary topological curved cylindrical paddle. The axis of the main topological curved cylindrical paddle coincides with the axis of the hollow spiral conveying cylinder. The axis of the secondary topological curved cylindrical paddle is parallel to the axis of the hollow spiral conveying cylinder and is circumferentially distributed along the axis of the main topological curved cylindrical paddle. The outer surfaces of the main and secondary topological curved cylindrical paddles are topological spiral surfaces and mesh with each other. Slurry particles enter the cylindrical kettle from the feed port. The mixing and compression release effects of the multiple meshing zones between the topological curved cylindrical paddles enhance the crushing and refinement of the slurry particles, improve the distribution mixing and dispersion mixing effects of the slurry, and at the same time, the rotation of the hollow spiral conveying cylinder enhances the continuous transport of the slurry to the discharge port of the cylindrical kettle, thereby achieving efficient and continuous mixing of the slurry.

Description

Technical Field

[0001] The present invention relates to the field of slurry mixing, and in particular to a slurry continuous mixing device and method based on self-cooperation of topological curved cylindrical paddles. Background Art

[0002] In fields such as new energy battery production, biopharmaceutical preparation, and daily chemical processing, the slurry that makes up the production raw materials has characteristics such as small particle size, low density, and large specific surface area. Particles are prone to agglomeration, which affects product quality. Therefore, slurry mixing and dispersion has become an essential operation unit in the processing process. Slurry mixing and dispersion are divided into macro-mixing and micro-dispersion processes. In these two processes, large agglomerated particles in the slurry are broken down and refined, thereby narrowing the particle size distribution range.

[0003] Traditional slurry mixing and dispersing devices generally include a stirring kettle and a twin-screw extruder. The stirring kettle uses stirring blades to circulate the slurry up and down in the kettle to fully stir and stir to achieve a mixing and dispersing effect. However, there are two main problems with the stirring kettle. The first problem is that the stirring kettle is an intermittent mixing and dispersing device, which requires a large amount of material for mixing, has a long material residence time, and has low production efficiency. The second problem is that there is a dead angle for mixing between the stirring blade and the kettle wall, resulting in poor mixing and dispersing effect, and the equipment is prone to sticking to the material. Compared with the stirring kettle, the twin-screw extruder can solve the problem of intermittent mixing and achieve efficient and continuous mixing. However, the mixing process in the twin-screw extruder is based on shear strain, and the drag shear generated has very little effect on breaking up the agglomerated particles of the slurry. Especially for high-viscosity systems, it is still not conducive to the mixing and dispersion of the slurry. Summary of the Invention

[0004] In response to the technical problems existing in the prior art, one of the purposes of the present invention is to provide a continuous slurry mixing device based on self-cooperation of topological curved cylindrical paddles, which can achieve continuous mixing and dispersion of slurry, enhance the mass transfer effect, and have a self-cleaning effect, ultimately improving the consistency and stability of the slurry mixing and dispersion quality.

[0005] In response to the technical problems existing in the prior art, the second purpose of the present invention is to provide a continuous slurry mixing method based on self-cooperation of topological curved cylindrical paddles.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A slurry continuous mixing device based on self-cooperation of a topological curved cylindrical paddle, comprising a cylindrical kettle, a hollow spiral conveying cylinder and a topological curved cylindrical paddle;

[0008] The two ends of the columnar kettle are respectively provided with a feed port and a discharge port;

[0009] The hollow spiral conveying cylinder is coaxially mounted in the cylindrical reactor and is used to continuously transport the slurry from the feed port to the discharge port by rotating and strengthening the slurry;

[0010] The topological curved cylindrical propeller is horizontally placed inside the hollow spiral conveying cylinder, including a main topological curved cylindrical propeller and at least two auxiliary topological curved cylindrical propellers. The axis of the main topological curved cylindrical propeller coincides with the axis of the hollow spiral conveying cylinder, and the at least two auxiliary topological curved cylindrical propellers are parallel to the main topological curved cylindrical propeller and distributed along the circumference of the main topological curved cylindrical propeller.

[0011] The outer surfaces of the main topological curved cylindrical paddle and the auxiliary topological curved cylindrical paddle are both topological spiral surfaces and mesh with each other to form at least two meshing areas, which are used to enhance the crushing and refinement of slurry particles and continuous transportation of slurry through mixing and compression release in the meshing areas.

[0012] Furthermore, the number of sub-topological curved cylindrical propellers is 6 and they are conjugately meshed in pairs. The main topological curved cylindrical propeller and the sub-topological curved cylindrical propeller are conjugately meshed and rotate at the same speed and in the same direction. The hollow spiral conveying cylinder and the axis of the sub-topological curved cylindrical propeller rotate in opposite directions around the axis of the main topological curved cylindrical propeller at a differential speed of 2 / 3, realizing full meshing of the sub-topological curved cylindrical propeller and the main topological curved cylindrical propeller and rotating at the same speed and in the same direction.

[0013] Furthermore, the diameters of the main topology curved cylindrical paddle and the secondary topology curved cylindrical paddle are the same.

[0014] Furthermore, the number of sub-topological curved cylindrical propellers is 6 and they are conjugately meshed in pairs. The main topological curved cylindrical propeller and the sub-topological curved cylindrical propeller are not fully meshed. The main topological curved cylindrical propeller and the sub-topological curved cylindrical propeller rotate at the same speed and in different directions, and the hollow spiral conveying cylinder and the axis of the sub-topological curved cylindrical propeller rotate in the same direction around the axis of the main topological curved cylindrical propeller at a differential speed of 2 / 3, realizing the equal-speed and different-direction rotation of the sub-topological curved cylindrical propeller and the main topological curved cylindrical propeller.

[0015] Furthermore, the diameter of the main topological curved cylindrical paddle is smaller than the diameter of the secondary topological curved cylindrical paddle.

[0016] Furthermore, the number of sub-topological curved cylindrical paddles is 4 and they do not mesh with each other. The main topological curved cylindrical paddle and the sub-topological curved cylindrical paddle rotate at the same speed and in opposite directions, and the axes of the hollow spiral conveying cylinder and the sub-topological curved cylindrical paddle do not rotate, thereby realizing the sub-topological curved cylindrical paddle and the main topological curved cylindrical paddle rotating at the same speed and in opposite directions.

[0017] A method for continuous slurry mixing based on self-cooperation of a topological curved cylindrical paddle, using a continuous slurry mixing device based on self-cooperation of a topological curved cylindrical paddle, comprising the following steps:

[0018] The slurry is fed into the columnar reactor from the feed port;

[0019] The crushing and refinement of slurry particles is enhanced by utilizing the mixing and compression-releasing effects of at least two meshing zones formed by the meshing of the main topological curved cylindrical paddle and the auxiliary topological curved cylindrical paddle;

[0020] The slurry is continuously transported using the spiral surface structure of the topological curved cylindrical paddle;

[0021] The hollow spiral conveying drum is used to rotate and strengthen the slurry to be continuously transported from the feed port to the discharge port.

[0022] In general, the present invention has the following advantages:

[0023] During the continuous mixing process of the slurry, the compression and release effect of the multiple meshing areas of the topological curved cylindrical paddles can enhance the mass transfer process and ensure good mixing and dispersion effect of the slurry. In addition, the mutually meshing topological curved cylindrical paddles have good self-cleaning effect and are particularly suitable for continuous mixing of slurries. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the principle of a unidirectional seven-topology curved cylindrical propeller device.

[0025] Figure 2 for Figure 1 Cross-section of a fully meshed topological surface cylindrical paddle.

[0026] Figure 3 This is a schematic diagram of the principle of the anisotropic seven-topology curved cylindrical propeller device.

[0027] Figure 4 for Figure 3 Cross-section of a cylindrical paddle with non-fully meshed topological surface.

[0028] Figure 5 This is a schematic diagram of the principle of the anisotropic five-topology curved cylindrical propeller device.

[0029] Figure 6 for Figure 5 Cross-section of a topologically curved cylindrical paddle.

[0030] Description of reference numerals:

[0031] 1 is the main topological curved cylindrical paddle, 2 is the secondary topological curved cylindrical paddle, 3 is the hollow spiral conveying cylinder, 4 is the cylindrical kettle, 5 is the feed port, and 6 is the discharge port. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below.

[0033] Example 1:

[0034] A slurry continuous mixing device based on the self-cooperation of topological curved cylindrical paddles, such as Figure 1-Figure 2As shown, it includes a columnar kettle 4, a hollow spiral conveying cylinder 3 and a topological curved cylindrical paddle; a feed port 5 and a discharge port 6 are respectively provided at both ends of the columnar kettle 4; the hollow spiral conveying cylinder 3 is coaxially sleeved in the columnar kettle 4; the topological curved cylindrical paddle is horizontally placed inside the hollow spiral conveying cylinder 3; the topological curved cylindrical paddle includes a main topological curved cylindrical paddle 1 and a plurality of sub-topological curved cylindrical paddles 2, the axis of the main topological curved cylindrical paddle 1 coincides with the axis of the hollow spiral conveying cylinder 3, and the axes of the plurality of sub-topological curved cylindrical paddles 2 are parallel to the axis of the main topological curved cylindrical paddle 1 and are distributed along the circumferential direction; the outer surfaces of the main topological curved cylindrical paddle 1 and the plurality of sub-topological curved cylindrical paddles 2 are both topological spiral surfaces and mesh with each other to form a plurality of meshing areas.

[0035] In this embodiment, the number of sub-topological curved cylindrical paddles 2 is 6, the main topological curved cylindrical paddle 1 and the sub-topological curved cylindrical paddle 2 have the same diameter and are conjugately meshed, and the sub-topological curved cylindrical paddles 2 are conjugately meshed in pairs; when the main topological curved cylindrical paddle 1 and the sub-topological curved cylindrical paddle 2 rotate at the same speed and in the same direction and the hollow spiral conveying cylinder 3 and the axis of the sub-topological curved cylindrical paddle 2 rotate in opposite directions around the axis of the main topological curved cylindrical paddle 1 at a differential speed of 2 / 3, the sub-topological curved cylindrical paddle 2 and the main topological curved cylindrical paddle 1 are fully meshed and rotate at the same speed and in the same direction.

[0036] The slurry particles enter the cylindrical kettle 4 from the feed port 5. The mixing and compression-releasing effects of the multiple meshing areas between the topologically curved cylindrical paddles enhance the crushing and refinement of the slurry particles and the spiral surface structure of the topologically curved cylindrical paddles realize continuous slurry transportation. At the same time, the rotation of the hollow spiral conveying cylinder 3 enhances the continuous transportation of the slurry to the discharge port 6 of the cylindrical kettle 4, realizing continuous, efficient and high-quality mixing of the slurry and having a good self-cleaning effect.

[0037] Example 2

[0038] This embodiment differs from embodiment 1 in that:

[0039] like Figure 3-Figure 4 As shown, the number of sub-topological curved cylindrical propellers 2 is 6, the diameter of the main topological curved cylindrical propeller 1 is smaller than that of the sub-topological curved cylindrical propeller and is not fully meshed, and the adjacent sub-topological curved cylindrical propellers 2 are conjugately meshed in pairs; when the main topological curved cylindrical propeller 1 and the sub-topological curved cylindrical propeller 2 rotate at equal speeds and in opposite directions and the hollow spiral conveying cylinder 3 and the axis of the sub-topological curved cylindrical propeller 2 rotate in the same direction around the axis of the main topological curved cylindrical propeller 1 at a differential speed of 2 / 3, the sub-topological curved cylindrical propeller and the main topological curved cylindrical propeller 1 rotate at equal speeds and in opposite directions.

[0040] The slurry particles enter the columnar kettle 4 from the feed port 5. The mixing and compression release effects of the multiple meshing areas between the topologically curved cylindrical paddles enhance the crushing and refinement of the slurry particles and the spiral surface structure of the topologically curved cylindrical paddles realizes continuous slurry transportation. At the same time, the rotation of the hollow spiral conveying cylinder 3 enhances the continuous transportation of the slurry to the discharge port 6 of the columnar kettle 4.

[0041] Example 3

[0042] This embodiment differs from embodiment 1 in that:

[0043] like Figure 5-Figure 6 As shown, the number of sub-topological curved cylindrical paddles 2 is 4, and the sub-topological curved cylindrical paddles 2 do not mesh with each other. When the main topological curved cylindrical paddle 1 and the sub-topological curved cylindrical paddle 2 rotate at the same speed and in opposite directions, and the axis of the hollow spiral conveying cylinder 3 and the sub-topological curved cylindrical paddle 2 do not rotate, the sub-topological curved cylindrical paddle 2 and the main topological curved cylindrical paddle 1 rotate at the same speed and in opposite directions.

[0044] The slurry particles enter the cylindrical kettle 4 from the feed port 5. The mixing and compression release effects of the multiple meshing areas between the topologically curved cylindrical paddles enhance the crushing and refinement of the slurry particles, and the spiral surface structure of the topologically curved cylindrical paddles continuously transports the slurry to the discharge port 6 of the cylindrical kettle 4.

[0045] Example 4

[0046] A method for continuous slurry mixing based on self-cooperation of a topological curved cylindrical paddle, using a continuous slurry mixing device based on self-cooperation of a topological curved cylindrical paddle, comprising the following steps:

[0047] The slurry is fed into the columnar kettle 4 from the feed port 5;

[0048] The mixing and compression release effect of at least two meshing areas formed by the mutual meshing of the main topological curved cylindrical paddle 1 and the auxiliary topological curved cylindrical paddle 2 is used to strengthen the crushing and refinement of the slurry particles and improve the distribution mixing and dispersion mixing effect of the slurry;

[0049] The slurry is continuously transported using the spiral surface structure of the topological curved cylindrical paddle;

[0050] The rotation of the hollow spiral conveying cylinder 3 is utilized to intensify the continuous conveying of the slurry from the feed port 5 to the discharge port 6, thereby achieving efficient and continuous mixing of the slurry, and ultimately improving the consistency and stability of the slurry mixing and dispersion quality.

[0051] The present invention solves the problems of poor mixing and dispersing effect, long residence time, high energy consumption, low mixing and dispersing efficiency, and difficulty in scraping slurry in traditional slurry mixing and dispersing devices. Compared with traditional slurry mixing and dispersing devices, the present invention has the following beneficial effects:

[0052] 1. The mixing and dispersing device has good mixing and dispersing effects. The compression and release effect of the multiple meshing areas of the topological curved cylindrical paddles enhances the heat and mass transfer during the mixing and dispersing process.

[0053] 2. The mixing and dispersing device has high mixing and dispersing efficiency. The spiral surface structure of the topological curved cylindrical paddle and the hollow spiral conveying cylinder 3 realize the continuous transportation and delivery of the slurry during the mixing and dispersing process.

[0054] 3. The mixing and dispersing device has strong self-cleaning ability. The mutual engagement of the spiral surfaces of the topological curved cylindrical paddles realizes the sweeping and scraping between the cylindrical paddles, solving the problem of slurry sticking in the equipment.

[0055] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A slurry continuous mixing device based on self-cooperation of topological curved cylindrical paddles, characterized by: It includes a columnar kettle, a hollow spiral conveying cylinder and a topological curved cylindrical paddle; The two ends of the columnar kettle are respectively provided with a feed port and a discharge port; The hollow spiral conveying cylinder is coaxially mounted in the cylindrical reactor and is used to continuously transport the slurry from the feed port to the discharge port by rotating and strengthening the slurry; The topologically curved cylindrical propeller is placed horizontally inside the hollow spiral conveying cylinder, including a main topologically curved cylindrical propeller and six auxiliary topologically curved cylindrical propellers. The axis of the main topologically curved cylindrical propeller coincides with the axis of the hollow spiral conveying cylinder, and the six auxiliary topologically curved cylindrical propellers are parallel to the main topologically curved cylindrical propeller and distributed along the circumference of the main topologically curved cylindrical propeller. The outer surfaces of the main topological curved cylindrical paddle and the auxiliary topological curved cylindrical paddle are both topological spiral surfaces and mesh with each other to form a meshing area, which is used to enhance the crushing and refinement of slurry particles and continuous slurry transportation through mixing and compression release in the meshing area; There are 6 auxiliary topological curved cylindrical propellers and they are conjugately meshed in pairs. The main topological curved cylindrical propeller and the auxiliary topological curved cylindrical propeller are conjugately meshed and rotate at the same speed and in the same direction. The hollow spiral conveying cylinder and the auxiliary topological curved cylindrical propeller axis rotate in opposite directions around the main topological curved cylindrical propeller axis at a differential speed of 2 / 3, achieving full meshing of the auxiliary topological curved cylindrical propeller and the main topological curved cylindrical propeller and rotating at the same speed and in the same direction. The diameters of the primary topology curved cylindrical paddle and the secondary topology curved cylindrical paddle are the same.

2. A slurry continuous mixing device based on self-cooperation of topological curved cylindrical paddles, characterized by: It includes a columnar kettle, a hollow spiral conveying cylinder and a topological curved cylindrical paddle; The two ends of the columnar kettle are respectively provided with a feed port and a discharge port; The hollow spiral conveying cylinder is coaxially mounted in the cylindrical reactor and is used to continuously transport the slurry from the feed port to the discharge port by rotating and strengthening the slurry; The topologically curved cylindrical propeller is placed horizontally inside the hollow spiral conveying cylinder, including a main topologically curved cylindrical propeller and six auxiliary topologically curved cylindrical propellers. The axis of the main topologically curved cylindrical propeller coincides with the axis of the hollow spiral conveying cylinder, and the six auxiliary topologically curved cylindrical propellers are parallel to the main topologically curved cylindrical propeller and distributed along the circumference of the main topologically curved cylindrical propeller. The outer surfaces of the main topological curved cylindrical paddle and the auxiliary topological curved cylindrical paddle are both topological spiral surfaces and mesh with each other to form a meshing area, which is used to enhance the crushing and refinement of slurry particles and continuous slurry transportation through mixing and compression release in the meshing area; There are 6 sub-topological curved cylindrical propellers and they are conjugately meshed in pairs. The main topological curved cylindrical propeller and the sub-topological curved cylindrical propeller are not fully meshed. The main topological curved cylindrical propeller and the sub-topological curved cylindrical propeller rotate at the same speed and in opposite directions. The hollow spiral conveying cylinder and the sub-topological curved cylindrical propeller axis rotate in the same direction around the main topological curved cylindrical propeller axis with a differential speed of 2 / 3, realizing the sub-topological curved cylindrical propeller and the main topological curved cylindrical propeller rotating at the same speed and in opposite directions. The diameter of the main topology curved cylindrical propeller is smaller than the diameter of the secondary topology curved cylindrical propeller.

3. A slurry continuous mixing device based on self-cooperation of topological curved cylindrical paddles, characterized by: It includes a columnar kettle, a hollow spiral conveying cylinder and a topological curved cylindrical paddle; The two ends of the columnar kettle are respectively provided with a feed port and a discharge port; The hollow spiral conveying cylinder is coaxially mounted in the cylindrical reactor and is used to continuously transport the slurry from the feed port to the discharge port by rotating and strengthening the slurry; The topologically curved cylindrical propeller is placed horizontally inside the hollow spiral conveying cylinder, including a main topologically curved cylindrical propeller and four auxiliary topologically curved cylindrical propellers. The axis of the main topologically curved cylindrical propeller coincides with the axis of the hollow spiral conveying cylinder, and the four auxiliary topologically curved cylindrical propellers are parallel to the main topologically curved cylindrical propeller and distributed along the circumference of the main topologically curved cylindrical propeller. The outer surfaces of the main topological curved cylindrical paddle and the auxiliary topological curved cylindrical paddle are both topological spiral surfaces and mesh with each other to form a meshing area, which is used to enhance the crushing and refinement of slurry particles and continuous slurry transportation through mixing and compression release in the meshing area; There are four sub-topological curved cylindrical propellers and they do not mesh with each other. The main topological curved cylindrical propeller and the sub-topological curved cylindrical propeller rotate at the same speed and in opposite directions, and the axes of the hollow spiral conveying cylinder and the sub-topological curved cylindrical propeller do not rotate, thereby realizing the sub-topological curved cylindrical propeller and the main topological curved cylindrical propeller rotating at the same speed and in opposite directions.

4. A method for continuous slurry mixing based on self-cooperation of a topological curved cylindrical paddle, characterized by: A slurry continuous mixing device based on self-cooperation of a topological curved cylindrical paddle according to any one of claims 1 to 3 is used, comprising the following steps: The slurry is fed into the columnar reactor from the feed port; The crushing and refinement of slurry particles is enhanced by the mixing and compression-releasing effect of the meshing zone formed by the meshing of the main topological curved cylindrical paddle and the secondary topological curved cylindrical paddle; The slurry is continuously transported using the spiral surface structure of the topological curved cylindrical paddle; The hollow spiral conveying drum is used to rotate and strengthen the slurry to be continuously transported from the feed port to the discharge port.

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