Talcum powder drying device and drying method

Abstract

The application discloses a talcum powder drying device and drying method, wherein the talcum powder drying device comprises a rack, and further comprises a multistage drying part and a heating part; the multistage drying part comprises a plurality of drying boxes, a plurality of driving parts and the heating part; the plurality of drying boxes are connected in the vertical direction, and each of the plurality of drying boxes is internally provided with an inner box rotationally connected thereto; a plurality of cylindrical material supporting parts are arranged around the axis of the inner box; the vertical sectional area of the plurality of material supporting parts decreases in turn corresponding to the plurality of inner boxes from top to bottom in the vertical direction; the plurality of driving parts are respectively arranged corresponding to the plurality of drying boxes; one end of the driving part is connected to the inner box to drive the inner box to rotate on the inner wall of the drying box; the heating part is arranged on the rack, and one end of the heating part is connected to the plurality of inner boxes to heat the plurality of material supporting parts; in the technical scheme, the corresponding drying mode can be selected according to the different humidity of the talcum powder material to effectively improve the drying effect and drying efficiency of the talcum powder material.

Description

Technical Field

[0001] This invention relates to the field of talc processing technology, and in particular to a talc drying apparatus and drying method. Background Technology

[0002] Talc powder is an industrial product, a magnesium silicate mineral belonging to the talc group. Its main component is hydrated magnesium silicate. It is produced by crushing, treating with hydrochloric acid, washing with water, and drying. It is commonly used as a filler in plastic and paper products, a rubber filler and anti-sticking agent for rubber products, and in high-grade paints and coatings. After production, talc powder is affected by the external environment and absorbs moisture, causing it to become damp and clump, thus affecting its use. Traditionally, talc powder needs to be dried using a drying device after production or after being stored for a certain period of time to bring its humidity to a normal range for use. However, most traditional drying devices are closed drying devices. This drying method not only makes it difficult to heat the talc powder material evenly during drying, affecting the drying effect, but also makes it difficult to meet the needs of continuous talc powder production. Summary of the Invention

[0003] The main objective of this invention is to provide a talc drying device and method, which aims to solve the problem that most traditional drying devices are closed-type drying devices. This drying method not only makes it difficult to ensure that the talc material is heated evenly during drying, thus affecting the drying effect, but also makes it difficult to meet the needs of continuous talc production.

[0004] To achieve the above objectives, the present invention provides a talc powder drying apparatus, including a frame, and further comprising:

[0005] Multi-stage drying components include multiple drying chambers, multiple drive components, and heating components;

[0006] Multiple drying ovens are connected vertically, and each of the multiple drying ovens is provided with an inner box that is rotatably connected to it. The inner box has multiple cylindrical material-bearing parts arranged around its axis, and the vertical cross-sectional area of ​​the multiple material-bearing parts decreases sequentially from top to bottom in the vertical direction corresponding to the multiple inner boxes.

[0007] Multiple driving components are respectively provided for multiple drying ovens, and one end of each driving component is connected to the inner box to drive the inner box to rotate on the inner wall of the drying oven;

[0008] A heating element is disposed on the frame, and one end of the heating element is connected to multiple inner boxes to heat multiple material receiving parts.

[0009] Preferably, agitators are movably installed on each of the inner boxes corresponding to the material receiving parts inside them. One end of each agitator on the same inner box is connected by a connector, so that under the action of the inner box, the agitators can stir the material in the material receiving parts through the connector.

[0010] Preferably, the disturbance component includes a rotating shaft rotatably mounted on the material receiving part, with one lateral end of the rotating shaft away from the frame rotatably extending out of the outer side of the inner box. The rotating shaft is provided with multiple sets of stirring rods evenly arranged around its axis on the inner side of the material receiving part, and each set of stirring rods has a scraper at one end, with the scraper contacting the inner wall of the material receiving part.

[0011] Preferably, the connector includes a first gear fixedly installed on the inner wall of one transverse end of the drying box, one end of the central shaft of the first gear being rotatably connected to the outer wall of the inner box, and a second gear fixedly connected to one end of a plurality of rotating shafts located on the outer side of the inner box, and the plurality of second gears meshing with the first gearbox.

[0012] Preferably, the multi-stage drying components are configured as two horizontally connected components, and each multi-stage drying component includes three vertically connected drying chambers. Each of the three drying chambers has two external guide ports on its circumferential sidewall. The external guide ports of two adjacent drying chambers in the vertical direction are connected. Each of the multiple material receiving parts has an internal guide port corresponding to the external guide ports.

[0013] Preferably, the inner box is divided into multiple flow guide cavities arranged along its axis by multiple material receiving parts. The multiple flow guide cavities include a first cavity formed by the outer walls of the multiple material receiving parts, and multiple second cavities formed by the outer walls of the material receiving parts and the inner wall of the inner box. The first cavity and the multiple second cavities are connected to the ends away from the frame.

[0014] Preferably, the drying chamber has a first opening at one end facing the inside of the frame, and the plurality of material receiving parts have inner tubes at one end corresponding to the first cavity. The inner chamber has a return end at one end corresponding to the outside of the inner tube, and the return end extends from the first opening to the outside of the drying chamber.

[0015] A circulating heating pipeline is provided between the heating element and the inner box;

[0016] The circulating heating pipeline includes:

[0017] A distribution box is provided on the frame and connected to one end of the two drying boxes in the same horizontal direction. Both ends of the distribution box are provided with a second opening, and a guide pipe is provided inside the distribution box. The inner tubes of the two inner boxes in the same horizontal direction are respectively rotatably connected to the two ends of the guide pipe. The return ends of the two inner boxes are respectively rotatably connected to the two second openings. The heating element is connected to the guide pipe and the second opening on the distribution box to form a hot fluid circulation loop from the guide pipe to the inner box and from the inner box back to the distribution box.

[0018] Preferably, a conduit is provided at one lateral end of the inner box near its circumferential side wall to connect the outer side of the inner box to one end of a plurality of second cavities. The conduit is provided with a cap, and the drying box is provided with a window corresponding to the conduit.

[0019] The heating element includes:

[0020] A circulating water tank is mounted on the frame, and a heating device is provided on the frame. One end of the heating device is installed inside the circulating water tank. A first pipe is provided on the distribution box for connection to the circulating water tank; and...

[0021] A pump body is mounted on the frame, one end of the pump body is connected to the circulating water tank, and the guide pipe is connected to the pump body through a second pipe.

[0022] Preferably, each of the three drying ovens on the frame corresponding to the vertical direction is provided with a mounting plate;

[0023] The plurality of driving components include motors respectively mounted on the mounting plate, the mounting plate having a drive shaft rotatably connected thereto, one end of the drive shaft being connected to the output end of the motor, and each drive shaft being connected to the circumferential outer wall of one of the two return ends positioned at the same vertical height by a transmission belt; and / or,

[0024] The distribution box is provided with a mounting bracket fixed to its outer periphery, and the mounting bracket is connected to the frame.

[0025] The present invention also proposes a method for drying talc powder, wherein the talc powder drying method is applied to a talc powder drying device, the talc powder drying device including a frame, and further comprising:

[0026] Multi-stage drying components include multiple drying chambers, multiple drive components, and heating components;

[0027] Multiple drying ovens are connected vertically, and each of the multiple drying ovens is provided with an inner box that is rotatably connected to it. The inner box has multiple cylindrical material-bearing parts arranged around its axis, and the vertical cross-sectional area of ​​the multiple material-bearing parts decreases sequentially from top to bottom in the vertical direction corresponding to the multiple inner boxes.

[0028] Multiple driving components are respectively provided for multiple drying ovens, and one end of each driving component is connected to the inner box to drive the inner box to rotate on the inner wall of the drying oven;

[0029] A heating element is disposed on the frame, and one end of the heating element is connected to multiple inner boxes to heat multiple material receiving parts;

[0030] The three drying chambers on the frame corresponding to the vertical direction are each equipped with a mounting plate;

[0031] The plurality of drive components include motors respectively mounted on the mounting plate;

[0032] The talc drying method includes:

[0033] When the moisture content of the talc powder material is between 10% and 20%, the water temperature in the inner box is 80°C, and the rotation speed of the inner box driven by the multiple motors is 5 r / min.

[0034] When the moisture content of the talc powder material is between 20% and 30%, the water temperature in the inner box is 80℃, and the inner box located at the top rotates at a speed of 5r / min under the drive of the corresponding motor, the inner box located in the middle vertical direction rotates at a speed of 10r / min under the drive of the corresponding motor, and the inner box located at the bottom vertical direction rotates at a speed of 10r / min under the drive of the corresponding motor.

[0035] When the moisture content of the talc powder material is between 30% and 40%, the water temperature in the inner box is 90°C, and the inner box located at the top rotates at a speed of 5 r / min under the drive of the corresponding motor, the inner box located in the middle vertical direction rotates at a speed of 10 r / min under the drive of the corresponding motor, and the inner box located at the bottom vertical direction rotates at a speed of 20 r / min under the drive of the corresponding motor.

[0036] When the humidity of the talc powder material is greater than 40%, the water temperature in the inner chamber is set to 90°C. The talc powder material is then circulated and dried in a drying process with a humidity between 30% and 40%. Once the humidity drops to the corresponding humidity range, it is then dried in a final drying process using the appropriate drying method.

[0037] The talc drying device described in this invention can continuously produce qualified materials while drying talc powder. Compared with traditional closed drying devices, this invention can effectively meet the continuous production needs in the talc powder production process and effectively improve its production efficiency.

[0038] Meanwhile, the drying structure in this invention is a multi-stage drying device in a vertical direction, and the circular cross-sectional area of ​​the material receiving parts in the multiple inner boxes decreases from top to bottom. This means that when the material receiving part in the lower inner box is fully loaded, it can only receive part of the material in the material receiving part above it. During the drying process of talc powder, the material that is not discharged into the material receiving part below can still be dried in the current inner box by heating with the heating element, thereby extending the drying process of the material. Finally, it ensures that the material discharged from the bottom inner box meets the drying requirements as much as possible.

[0039] Furthermore, the present invention employs a highly efficient dynamic drying method. During the rotation of the inner chamber, not only can the material be transferred from top to bottom, but multiple agitators can also be driven to stir the material in multiple material receiving parts. This not only refines the agglomerated material, but also effectively improves its drying effect and drying efficiency. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0041] Figure 1 This is a three-dimensional structural schematic diagram of the talc powder drying device provided by the present invention.

[0042] Figure 2 for Figure 1 Schematic diagram of the inner box structure;

[0043] Figure 3 for Figure 1 Schematic diagram of the connection between the drying oven and the separation box;

[0044] Figure 4 for Figure 1 Schematic diagram of the assembly structure of the inner drying oven and the inner chamber;

[0045] Figure 5 for Figure 1 A partial structural cross-sectional diagram of a multi-stage drying component;

[0046] Figure 6 for Figure 1 A partial structural diagram of the feeding and unloading assembly;

[0047] Figure 7 For application Figure 1 A schematic diagram of the talc drying method in a medium-sized talc drying device.

[0048] Explanation of icon numbers:

[0049]

[0050]

[0051] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0053] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0054] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0055] Talc powder is an industrial product, a magnesium silicate mineral belonging to the talc group. Its main component is hydrated magnesium silicate. It is produced by crushing, treating with hydrochloric acid, washing with water, and drying. It is commonly used as a filler in plastic and paper products, a rubber filler and anti-sticking agent for rubber products, and in high-grade paints and coatings. After production, talc powder is affected by the external environment and absorbs moisture, causing it to become damp and clump, thus affecting its use. Traditionally, talc powder needs to be dried using a drying device after production or after being stored for a certain period of time to bring its humidity to a normal range for use. However, most traditional drying devices are closed drying devices. This drying method not only makes it difficult to heat the talc powder material evenly during drying, affecting the drying effect, but also makes it difficult to meet the needs of continuous talc powder production.

[0056] To address the above problems, this invention proposes a talc powder drying device and drying method. Figures 1 to 7 This is a schematic diagram of an embodiment of the talc powder drying apparatus and drying method provided by the present invention.

[0057] Please refer to Figures 1 to 6 This invention proposes a talc powder drying device 1000. To improve the drying effect of the entire talc powder drying device 1000, the drying structure in this embodiment is a multi-stage drying component. Specifically, multiple drying chambers 1 in the multi-stage drying component are arranged horizontally and have the same horizontal length. In the multi-stage drying component, the circular cross-sectional diameter of multiple material receiving parts 24 in the inner chamber 2 located at the top vertical direction is the largest, and the circular cross-sectional area of ​​the material receiving parts 24 in the multiple inner chambers 2 decreases from top to bottom. This allows the material receiving part 24 in the lower inner chamber 2 to only receive about 1 / 2 of the material in the material receiving part 24 above it when fully loaded. When the driving component drives the inner chamber 2 to rotate in the drying chamber to achieve efficient dynamic drying, the material that is not discharged into the material receiving part 24 located below can still be dried in the current inner chamber 2 by combining with the heating component, thereby extending the drying journey of the material. Finally, it ensures that the material discharged from the bottom inner chamber 2 meets the drying requirements as much as possible.

[0058] It should also be noted that, compared with the traditional closed drying method, the structure of this solution can continuously produce qualified materials during the drying process, making it suitable for continuous production operations and achieving better practical application results.

[0059] In addition, to further improve the drying effect of the material in the material receiving section 24, during the process of the drive unit driving the inner box 2 to rotate, the inner box 2 drives multiple disturbance components to stir the material in the multiple material receiving sections 24 through the connecting component on the drying box 1. Therefore, when the inner box 2 rotates, the multiple disturbance components simultaneously stir the material to promote the refinement of the material and accelerate the movement of the material, thereby increasing the contact area between the material and the material receiving section 24, and further improving the drying efficiency of the material.

[0060] Specifically, the working process of the disturbance component is as follows: under the drive of the connecting component, the rotating shaft 4 in the disturbance component rotates, thereby driving multiple sets of stirring rods 41 on its circumferential sidewall to stir and refine the material in the material receiving part 24. At the same time, when the talc powder material has a high moisture content, it is easy to adhere to the inside of the material receiving part 24. When drying the talc powder material, in order to prevent the talc powder material from drying and clumping inside the material receiving part 24, in this embodiment, a scraper 42 is fixedly connected to one end of each set of stirring rods 41. One end of the scraper 42 contacts the inside of the material receiving part 24. During the rotation of the rotating shaft 4, the scraper 42 can be driven to scrape off the talc powder material adhering to the inside of the material receiving part 24.

[0061] Specifically, the connecting member is a gear pair connecting member, wherein a first gear 43 is provided inside the drying box 1. During the rotation of the multiple rotating shafts 4 with the inner box 2, the second gear 44 fixed to the end of the shaft 44 meshes and rotates on the outer periphery of the first gear 43, thereby driving the multiple rotating shafts 4 to rotate synchronously, and thus stirring the talc powder material in the material receiving part 24.

[0062] To increase the drying efficiency of the talc powder material in the entire device, two rows of multi-stage drying components are arranged horizontally on the frame 3, and each drying component contains three drying chambers 1. Two adjacent drying chambers 1 are connected by an outer feed port 11. During the dynamic drying process of the talc powder material, when the inner feed port 23 on the upper part of the material receiving part 24 coincides with the outer feed port 11, the above-mentioned multi-stage drying effect of the talc powder material from top to bottom will be achieved.

[0063] The multiple material-bearing portions 24 divide the inner box 2 cavity into a first cavity 21 corresponding to the axis of the inner box 2, and a multiple second cavities 22 evenly distributed around the axis of the inner box 2, so as to cooperate in heating the material-bearing portions 24 by means of hot fluid.

[0064] In this embodiment, the heating method for the material receiving part 24 is set as hot fluid heating. Specifically, during the actual heating process of the material receiving part 24, a hot fluid circulation loop is formed in the circulating heating pipe, from the guide pipe 52 to the inner box 2, and from the inner box 2 back to the distribution box 5. The hot fluid can be selected according to the actual situation, and heating by water or gas is a feasible option.

[0065] Specifically, in this embodiment, water heating is used to heat the receiving part 24. In the actual heating process, the heating device 61 heats the water in the circulating water tank 6, and the water temperature is usually maintained at 80°C to 90°C. The pump body 62 transports the hot water in the circulating water tank 6 to the guide pipe 52 through the second pipe 63. The water in the guide pipe 52 flows through the first cavity 21 to multiple second cavities 22. The hot water flows through multiple second cavities 22 to the return end 28. The water in the return end 28 flows back to the circulating water tank 6 through the first pipe 64 on the diversion box 5. By heating multiple receiving parts with live water, the stability of the drying temperature of the receiving parts and the uniformity of the heating of the receiving parts during the heating process can be effectively guaranteed.

[0066] Meanwhile, a conduit 26 is provided on one of the horizontal ends of the inner box 2. When the entire device is ready to be used, first rotate the inner box 2 so that the conduit 26 is on the side facing upward in the vertical direction. Open the end of the conduit 26 located on the outside of the inner box 2, and then inject water into the first chamber 21 and multiple second chambers 22 through the pump body 62. The gas in the inner box 2 will be discharged from the conduit 26 to the outside of the drying box 1. When the water in the inner box 2 is almost full, the outward end of the conduit 26 is sealed with a cap (not shown in the figure). After the water filling is completed, the inner box 2 can retain a sufficient amount of water, thereby ensuring the effect of water heating.

[0067] In this embodiment, the multiple driving components are configured as multiple motors 71 corresponding to the multiple drying boxes 1 in the vertical direction. When the entire device is working, the motors 71 drive the drive shafts 72 connected to them to rotate. The drive shafts 72 drive the two inner boxes 2 to rotate on the inner wall of the drying box 1 simultaneously through two conventional belts.

[0068] The diversion box 5 is located on the frame 3 and is connected to one end of the two drying boxes 1 in the same horizontal direction. Both ends of the diversion box 5 are provided with a second opening 51, and a guide pipe 52 is provided inside the diversion box 5. The inner tubes 25 in the two inner boxes 2 in the same horizontal direction are respectively rotatably connected to the two ends of the guide pipe 52. The return ends 28 in the two inner boxes 2 are respectively rotatably connected to the two second openings 51. In order to ensure that the return port remains stable when rotating at the second opening 51 and the inner tube 25 rotates on the guide pipe 52, it is necessary to strengthen the fixing effect of the guide pipe 52 and the diversion box 5. Therefore, an integrated annular fixing frame 54 is provided inside the diversion box 5 to fix the guide pipe 52. At the same time, an installation frame 53 is provided on the outer periphery of the diversion box 5. During installation, the installation frame 53 is fixed to the frame 3 to strengthen the installation and fixing effect of the diversion box 5.

[0069] A feeding assembly is also provided above the frame 3, so that the wet talc powder material can smoothly enter the drying chamber 1 located at the top vertically for drying. Specifically, the storage box 8 in the feeding assembly includes two feeding parts 81 connected to the two external guide ports 11. The bidirectional motor 71 on the frame 3 drives the feeding shaft 83 fixed to its end to rotate. The feeding shaft 83 is provided with multiple blades 84 corresponding to the feeding parts 81. As the feeding shaft 83 rotates, the multiple blades 84 will refine the wet talc powder material at the feeding parts 81, so that it can be better introduced into the drying chamber 1 for drying.

[0070] This invention also proposes a method for drying talc powder. Figures 1 to 7 The talc drying method is applied to the talc drying device 1000, and the specific structure of the talc drying device 1000 is as described in the above embodiment.

[0071] The talc drying method categorizes talc powders by their moisture content and employs different drying schemes to ensure that the talc powder achieves the desired drying effect in a single drying process. Specifically, the talc drying method includes the following:

[0072] When the moisture content of the talc powder material is between 10% and 20%, the water temperature in the inner box 2 is 80°C, and the rotation speed of the inner box 2 driven by the multiple motors 71 is 5 r / min.

[0073] When the moisture content of the talc powder material is between 20% and 30%, the water temperature in the inner box 2 is 80°C, and the inner box 2 located at the top rotates at a speed of 5 r / min under the drive of the corresponding motor 71, the inner box 2 located in the middle vertical direction rotates at a speed of 10 r / min under the drive of the corresponding motor 71, and the inner box 2 located at the bottom vertical direction rotates at a speed of 10 r / min under the drive of the corresponding motor 71.

[0074] When the moisture content of the talc powder material is between 30% and 40%, the water temperature in the inner box 2 is 90°C, and the inner box 2 located at the top rotates at a speed of 5 r / min under the drive of the corresponding motor 71, the inner box 2 located in the middle vertical direction rotates at a speed of 10 r / min under the drive of the corresponding motor 71, and the inner box 2 located at the bottom vertical direction rotates at a speed of 20 r / min under the drive of the corresponding motor 71.

[0075] When the humidity of the talc powder material is greater than 40%, the water temperature in the inner box 2 is set to 90°C. Then, the talc powder material is first dried in a cycle with a humidity between 30% and 40%. After the humidity drops to the corresponding humidity range, it is then dried in a final drying process using the appropriate drying method.

[0076] It should be noted that the moisture content of talc powder is generally maintained between 5% and 10%. When the moisture content of talc powder is between 10% and 20%, the rotation speed of the multiple inner boxes 2 in the vertical direction is the same. When the two material receiving parts 24 in the vertical direction are in contact with each other, the amount of material transferred in the corresponding two material receiving parts 24 is about 1 / 2. Approximately 1 / 2 of the talc powder material in the material receiving part 24 above the current material receiving part 24 has not been conveyed downwards. This part of the talc powder material can still be heated and dried in the current inner box 2. This is mainly due to the sufficient drying by the two inner boxes 2 in the vertical direction below, which can maintain the moisture content of the talc powder material with a moisture content between 10% and 20% below 10% at the final discharge. When the moisture content of talc powder is between 20% and 30%, we correspondingly increase the rotation speed of the two inner boxes 2 in the vertical direction below, so that the vertical direction... The vertical time of the inner guide ports 23 on the sides of the two corresponding material receiving sections 24 is reduced to slow down the amount of material conveyed downward each time. At the same time, when the rotation speed of the inner box 2 is increased, the material refining and movement in the material receiving section 24 can be accelerated, thereby improving the drying efficiency of the material in the corresponding material receiving section 24. When the humidity of the talc powder material is between 20% and 30%, the rotation speed of the two inner boxes 2 located below is doubled simultaneously, so that the discharged talc powder material meets the humidity requirements. When the humidity of the talc powder material is between 30% and 40%, the rotation speed of the bottom inner box 2 is doubled again, thereby extending the drying time of the material in the inner box 2. When the humidity of the talc powder material is greater than 40%, the material is first dried by circulating it using a drying method with a humidity between 30% and 40% until the material meets the humidity requirements after discharge.

[0077] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A talc powder drying apparatus comprising a frame, characterized by, Also includes: Multi-stage drying components include multiple drying chambers, multiple drive components, and heating components; Multiple drying ovens are connected vertically, and each of the multiple drying ovens is provided with an inner box that is rotatably connected to it. The inner box has multiple cylindrical material-bearing parts arranged around its axis, and the vertical cross-sectional area of ​​the multiple material-bearing parts decreases sequentially from top to bottom in the vertical direction corresponding to the multiple inner boxes. Multiple driving components are respectively provided for multiple drying ovens, and one end of each driving component is connected to the inner box to drive the inner box to rotate on the inner wall of the drying oven; A heating element is disposed on the frame, and one end of the heating element is connected to multiple inner boxes to heat multiple material receiving parts; Each of the inner boxes has a disturbance component movably installed on a corresponding material receiving part inside it. One end of the disturbance components on the same inner box is connected to each other by a connector, so that under the action of the inner box, the disturbance components can be driven by the connector to stir the material in the material receiving parts. The disturbance component includes a rotating shaft rotatably mounted on the material receiving part. The lateral end of the rotating shaft away from the frame rotates out of the outer side of the inner box. The rotating shaft is provided with multiple sets of stirring rods evenly arranged around its axis on the inner side of the material receiving part. Each set of stirring rods has a scraper at one end, and the scraper contacts the inner wall of the material receiving part. The connector includes a first gear fixedly installed on the inner wall of one horizontal end of the drying box. One end of the central shaft of the first gear is rotatably connected to the outer wall of the inner box. A plurality of rotating shafts are provided with a second gear fixedly connected to one end of the outer side of the inner box. The plurality of second gears mesh with the first gearbox.

2. The talc drying apparatus according to claim 1, wherein The multi-stage drying unit is configured as two horizontally connected units, and each multi-stage drying unit contains three vertically connected drying chambers. Each of the three drying chambers has two external guide ports on its circumferential sidewall. The external guide ports of two adjacent drying chambers in the vertical direction are connected. Each of the multiple material receiving parts has an internal guide port corresponding to the external guide ports.

3. The talc drying apparatus according to claim 2, wherein The inner box is divided into multiple flow guide cavities along its axis by multiple material receiving parts. The multiple flow guide cavities include a first cavity formed by the outer walls of the multiple material receiving parts, and multiple second cavities formed by the outer walls of the material receiving parts and the inner wall of the inner box. The first cavity and the multiple second cavities are connected to the ends away from the frame.

4. The talc drying apparatus according to claim 3, wherein The drying chamber has a first opening at one end facing the inside of the frame, and a plurality of material receiving parts have an inner tube at one end corresponding to the first cavity. The inner chamber has a return end at one end corresponding to the outside of the inner tube, and the return end extends from the first opening to the outside of the drying chamber. A circulating heating pipeline is provided between the heating element and the inner box; The circulating heating pipeline includes: A distribution box is provided on the frame and connected to one end of the two drying boxes in the same horizontal direction. Both ends of the distribution box are provided with a second opening, and a guide pipe is provided inside the distribution box. The inner tubes of the two inner boxes in the same horizontal direction are respectively rotatably connected to the two ends of the guide pipe. The return ends of the two inner boxes are respectively rotatably connected to the two second openings. The heating element is connected to the guide pipe and the second opening on the distribution box to form a hot fluid circulation loop from the guide pipe to the inner box and from the inner box back to the distribution box.

5. The talc drying apparatus according to claim 4, wherein The inner box has a conduit located at one lateral end near its circumferential side wall to connect the outer side of the inner box to one end of multiple second cavities. The conduit has a cap, and the drying box has a window corresponding to the conduit. The heating element includes: A circulating water tank is mounted on the frame, and a heating device is provided on the frame. One end of the heating device is installed inside the circulating water tank. A first pipe is provided on the distribution box for connection to the circulating water tank; and... A pump body is mounted on the frame, one end of the pump body is connected to the circulating water tank, and the guide pipe is connected to the pump body through a second pipe.

6. The talc drying apparatus of claim 4, wherein The three drying chambers on the frame corresponding to the vertical direction are each equipped with a mounting plate; The plurality of driving components include motors respectively mounted on the mounting plate, the mounting plate having a drive shaft rotatably connected thereto, one end of the drive shaft being connected to the output end of the motor, and each drive shaft being connected to the circumferential outer wall of one of the two return ends positioned at the same vertical height by a transmission belt; and / or, The distribution box is provided with a mounting bracket fixed to its outer periphery, and the mounting bracket is connected to the frame.

7. A talc drying method based on the talc drying apparatus according to any one of claims 1 to 6, characterized by, The talc drying method includes: When the moisture content of the talc powder material is between 10% and 20%, the water temperature in the inner box is 80°C, and the rotation speed of the inner box driven by multiple motors is 5 r / min. When the moisture content of the talc powder material is between 20% and 30%, the water temperature in the inner box is 80℃, and the inner box located at the top rotates at a speed of 5r / min driven by the corresponding motor, the inner box located in the middle vertical direction rotates at a speed of 10r / min driven by the corresponding motor, and the inner box located at the bottom vertical direction rotates at a speed of 10r / min driven by the corresponding motor. When the moisture content of the talc powder material is between 30% and 40%, the water temperature in the inner box is 90℃, and the inner box located at the top rotates at a speed of 5r / min driven by the corresponding motor, the inner box located in the middle vertical direction rotates at a speed of 10r / min driven by the corresponding motor, and the inner box located at the bottom vertical direction rotates at a speed of 20r / min driven by the corresponding motor. When the humidity of the talc material is greater than 40%, the water temperature in the inner box is 90℃, then the talc material is first dried in a drying process with humidity between 30% and 40%, and then dried again in a corresponding drying process when the humidity is reduced to the above corresponding humidity range.

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