Drying box for master batch production

Abstract

The utility model relates to a drying box for master batch production. The drying device comprises a rack and a drying barrel, an electric heating air blowing assembly is arranged on the rack, a fixed mesh is fixed to an opening of the drying barrel, and the other end of the drying barrel is covered with a detachable movable mesh. A plurality of containing hoppers and a plurality of discharging hoppers are distributed on the inner wall of the drying barrel, each discharging hopper comprises an inclined plate, two triangular side plates, a turning cover rotationally connected to the inclined plate and a discharging hole, and a discharging window is defined among the inclined plate, the two triangular side plates and the inner wall of each discharging hopper; and a material receiving groove is fixed below the drying barrel. When the drying barrel is in the forward rotation state, master batches in the drying barrel can continuously roll and fall under the action of the containing hopper and the discharging hopper, the contact time and area of the master batches and dry hot air are increased, and the drying efficiency is high; and when the drying barrel rotates reversely, the master batches can be discharged from the discharging hole, the master batches discharged from the discharging hole can be collected by the material receiving groove below, the automatic discharging effect is achieved, and the production efficiency can be improved conveniently.

Description

Technical Field

[0001] This utility model relates to a drying device, and more particularly to a drying box for masterbatch production. Background Technology

[0002] Masterbatch is a plastic processing aid composed of a large amount of chemical additives, carrier resin, and dispersants, primarily used in the plastic processing and molding process. Masterbatch is a granular material produced by mixing the required additives and fillers with a small amount of carrier resin and then processing it through equipment such as an extruder. The main function of masterbatch is to improve the processing efficiency and product quality of plastic products while reducing costs. Based on function and application, masterbatch can be divided into ordinary filler masterbatch and functional masterbatch, such as color masterbatch and anti-fogging masterbatch.

[0003] The production process of masterbatch includes, but is not limited to, raw material preparation, crushing, mixing, melting, extrusion, cooling and solidification, cutting and granulation, and packaging. The cooling and solidification process involves water cooling of the molten material freshly extruded from the extruder, causing the material to solidify again for easier subsequent cutting and granulation. The granules produced after the cutting process are the final masterbatch; however, these masterbatches are in a moist state and cannot be directly packaged. Therefore, it is necessary to develop equipment that can efficiently dry the masterbatch. Utility Model Content

[0004] This invention provides a drying box for masterbatch production, solving the problem in the prior art that drying is required during the masterbatch production process.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: A drying box for masterbatch production includes a frame and a drying drum horizontally rotatably mounted on the frame. The frame is equipped with a drive assembly for rotating the drying drum. The drying drum is through-hole at both ends. An electric heating blower assembly is mounted on the frame facing one end of the drying drum. A fixed mesh is fixed at the opening of the drying drum, and a detachable movable mesh covers the other end of the drying drum. Several hoppers are arranged in a circular array on the inner wall of the drying drum. Each hopper is elongated and its length is distributed along the length of the drying drum. Several other hoppers are also arranged in a circular array on the inner wall of the drying drum. The dry discharge hopper is elongated and its length is distributed along the length of the drying drum. The hopper includes an inclined plate fixed to the inner wall of the drying drum, two triangular side plates connecting the inclined plate and the inner wall of the hopper, a flip cover rotatably connected to the inclined plate, and a discharge hole penetrating the hopper. A discharge window is defined between the inclined plate, the two triangular side plates, and the inner wall of the hopper. The discharge window faces opposite to the opening direction of the hopper. The discharge hole is located within the discharge window. A magnetic strip is also provided on the inner wall of the hopper in the discharge window area. The permanent magnet on the magnetic strip is made of a weakly magnetic material. A receiving groove is fixed below the drying drum relative to the frame.

[0006] The working principle of this utility model is as follows: Wet material is fed in, the movable mesh is removed, and the masterbatch to be dried is poured into the drying drum via automated feeding equipment or manually. Then, the movable mesh is fixed back onto the drying drum. The movable and fixed meshes prevent leakage of the masterbatch from the drying drum. Simultaneously, the electric heating blower assembly and drive assembly are activated, causing the drying drum to rotate clockwise. The masterbatch tumbles continuously inside the drying drum, with the opening of the hopper facing the direction of the masterbatch's fall. Therefore, the hopper at the lower level is filled with masterbatch. As the drying drum rotates, the hopper gradually inverts, causing the masterbatch to fall from a higher position. During this fall, it comes into full contact with the hot air, causing the surface moisture to evaporate rapidly. The water vapor is blown away from one end of the movable mesh, while the discharge window on the discharge hopper faces away from the falling masterbatch, and the flip cover is magnetically controlled. The suction bar is in an adsorption state, so the discharge window is completely closed, making it difficult for the masterbatch to pass through. However, the inclined plate also has the effect of causing the masterbatch to tumble. Therefore, when the drying drum is rotating in the forward direction, the masterbatch inside will continuously tumble and fall under the action of the hopper and the discharge hopper, increasing the contact time and area between the masterbatch and the hot drying air, thus accelerating the drying process. Conversely, when the masterbatch is dried, the drying drum reverses direction. At this time, the opening direction of the hopper is opposite to the rolling direction of the masterbatch, so the hopper no longer has the function of holding material. The discharge window is now directly opposite to the rolling direction of the masterbatch. Since the magnetic suction bar has a weak attraction to the flip cover, the impact of the masterbatch will easily push open the adsorbed flip cover, allowing the masterbatch to enter the discharge window and finally be discharged from the discharge hole. The masterbatch discharged from the discharge hole will be collected by the receiving trough below.

[0007] Therefore, this utility model has the following characteristics compared with the prior art: 1. When the drying drum is rotating in the forward direction, the masterbatch inside will continuously tumble and fall under the action of the feeding hopper and the unloading hopper, increasing the contact time and area between the masterbatch and the hot drying air, resulting in higher drying efficiency; 2. When the drying drum is reversed, the impact of the masterbatch will easily push open the adsorbed flap, so that the masterbatch will be discharged from the unloading hole. The masterbatch discharged from the unloading hole will be collected by the receiving trough below. Therefore, this utility model has the effect of automatic unloading, which facilitates the improvement of production efficiency. Attached Figure Description

[0008] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Appendix Figure 2 This is an internal view of the drying drum when it is rotating forward;

[0010] Appendix Figure 3 This is an internal view of the drying drum when it is reversed;

[0011] Appendix Figure 4 It is attached Figure 3 Enlarged view of part A;

[0012] Appendix Figure 5This is a schematic diagram showing two states of the unloading hopper;

[0013] Appendix Figure 6 This is a top view of the driving component;

[0014] Appendix Figure 7 This is a diagram showing the positional relationship between the drying drum, drive assembly, and receiving trough;

[0015] Appendix Figure 8 This is a schematic diagram of the movable mesh structure. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Example 1: See Figure 1 , Figure 2 and Figure 3 A drying box for masterbatch production includes a frame 100 and a drying drum 200 horizontally rotatably mounted on the frame. The frame is equipped with a drive assembly for rotating the drying drum. The drying drum is open at both ends. An electric heating blower assembly 300 is mounted on the frame facing one end of the drying drum. A fixed mesh 210 is fixed to the opening of the drying drum, and a movable mesh 220 covers the other end of the drying drum. Magnetic elements 221 are provided on the edge of the movable mesh for quick assembly and disassembly. A circular array of [missing information - likely related to a specific type of drying drum] is distributed on the inner wall of the drying drum. Several hoppers 400 are elongated and distributed along the length of the drying drum. Several discharge hoppers 500 are also arranged in a circular array on the inner wall of the drying drum. These discharge hoppers are also elongated and distributed along the length of the drying drum. Each discharge hopper includes an inclined plate 510 fixed to the inner wall of the drying drum, two triangular side plates 520 connecting the inclined plate and the inner wall of the discharge hopper, a flip cover 530 rotatably connected to the inclined plate, and a discharge hole 540 penetrating the discharge hopper (see [reference]). Figure 4The unloading window is defined by the inclined plate, the two triangular side plates and the inner wall of the unloading hopper. The orientation of the unloading window is opposite to the opening direction of the hopper. The unloading hole is located inside the unloading window. The inner wall of the unloading hopper in the unloading window area is also equipped with a magnetic strip 550. The permanent magnet material on the magnetic strip is a weakly magnetic material. A receiving groove 600 is fixed below the drying barrel relative to the frame.

[0019] See Figure 2 , Figure 3 and Figure 5 The working principle of this embodiment is as follows: Wet material is fed in, the movable mesh is removed, and the masterbatch to be dried is poured into the drying drum via automated feeding equipment or manually. Then, the movable mesh is fixed back onto the drying drum. The movable and fixed meshes prevent leakage of the masterbatch from the drying drum. Simultaneously, the electric heating blower assembly and drive assembly are activated, causing the drying drum to rotate clockwise. The masterbatch tumbles continuously inside the drying drum, with the opening of the hopper facing the direction of the masterbatch's fall. Therefore, the hoppers at the lower level are filled with masterbatch. As the drying drum rotates, the hoppers gradually invert, causing the masterbatch to fall from a higher position. During this fall, it comes into full contact with the hot air, causing the surface moisture to evaporate quickly. The water vapor is blown away from one end of the movable mesh, while the discharge window on the discharge hopper faces away from the falling masterbatch, and the flip cover is magnetically controlled. The suction bar is in an adsorption state, so the discharge window is completely closed, making it difficult for the masterbatch to pass through. However, the inclined plate also has the effect of causing the masterbatch to tumble. Therefore, when the drying drum is rotating in the forward direction, the masterbatch inside will continuously tumble and fall under the action of the hopper and the discharge hopper, increasing the contact time and area between the masterbatch and the hot drying air, thus accelerating the drying process. Conversely, when the masterbatch is dried, the drying drum reverses direction. At this time, the opening direction of the hopper is opposite to the rolling direction of the masterbatch, so the hopper no longer has the function of holding material. The discharge window is now directly opposite to the rolling direction of the masterbatch. Since the magnetic suction bar has a weak attraction to the flip cover, the impact of the masterbatch will easily push open the adsorbed flip cover, allowing the masterbatch to enter the discharge window and finally be discharged from the discharge hole. The masterbatch discharged from the discharge hole will be collected by the receiving trough below.

[0020] See Figure 1 , Figure 6 and Figure 7The drying drum has a first annular guide rail 201, a second annular guide rail 202, and an annular rack 203 located between the two annular guide rails on its outer wall. The surfaces of the two annular guide rails are inclined in opposite directions. A first guide wheel 110 tangent to the first annular guide rail, a second guide wheel 120 tangent to the second annular guide rail, and a transmission gear 130 meshing with the annular rack are rotatably mounted on the frame. A motor 140 is also mounted on the frame, and a pulley assembly 150 connects the motor and the transmission gear. There are two first guide wheels and two second guide wheels, which are mirror images of each other located diagonally below the drying drum. The motor, pulley assembly, and transmission gear constitute the aforementioned drive assembly. The two guide wheels are frustum-shaped. This embodiment can achieve simple axial positioning of the drying drum through the above technical solution. The distribution of the discharge holes needs to avoid the two annular guide rails and the annular rack to prevent interference.

[0021] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. A drying box for masterbatch production, comprising a frame and a drying drum horizontally rotatably mounted on the frame, wherein the frame is provided with a drive assembly for driving the drying drum to rotate, characterized in that: The drying drum is open at both ends. An electric heating blower assembly is mounted on the frame facing one end of the drying drum. A fixed mesh is fixed to the opening of the drying drum, and a detachable movable mesh covers the other end of the drying drum. Several hoppers, each elongated and oriented along the length of the drying drum, are arranged in a circular array on the inner wall of the drying drum. Similarly, several discharge hoppers, also elongated and oriented along the length of the drying drum, are also arranged in a circular array on the inner wall of the drying drum. The unloading hopper includes an inclined plate fixed to the inner wall of the drying drum, two triangular side plates connecting the inclined plate and the inner wall of the unloading hopper, a flip cover rotatably connected to the inclined plate, and a discharge hole penetrating the unloading hopper. A discharge window is defined between the inclined plate, the two triangular side plates, and the inner wall of the unloading hopper. The orientation of the discharge window is opposite to the opening direction of the hopper. The discharge hole is located inside the discharge window. A magnetic strip is also provided on the inner wall of the unloading hopper in the area of ​​the discharge window. A receiving groove is fixed below the drying drum relative to the frame.

2. The drying oven for masterbatch production according to claim 1, characterized in that: The outer wall of the drying drum is provided with a first annular guide rail, a second annular guide rail, and an annular rack located between the two annular guide rails. The surfaces of the two annular guide rails are inclined in opposite directions. The frame is rotatably provided with a first guide wheel tangent to the first annular guide rail, a second guide wheel tangent to the second annular guide rail, and a transmission gear meshing with the annular rack. The frame is also provided with a motor, and the motor is connected to the transmission gear by a pulley assembly.

3. The drying oven for masterbatch production according to claim 2, characterized in that: Both the first guide wheel and the second guide wheel are provided in pairs, and they are positioned diagonally below the drying drum.

4. The drying oven for masterbatch production according to claim 1, characterized in that: The edges of the movable mesh are equipped with magnetic attractors.

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