A zinc oxide powder granulator

Abstract

This utility model proposes a zinc oxide powder granulator, relating to the technical field of zinc oxide production equipment. It includes a feeding hopper, a granulation hopper, a granulation mold, a pressure roller, and a motor. The feeding hopper has a feed inlet at its top and a sloped bottom wall. A circular discharge outlet is located on the adjacent side wall of the feeding hopper slope, communicating with the granulation hopper installed on one side of the feeding hopper. The granulation mold has an annular discharge outlet. The outer wall of the granulation mold and the inner wall of the granulation hopper form a granulation cavity. The bottom of the granulation hopper has a granulation outlet. A main shaft is installed inside the granulation hopper, and a pressure roller fixing plate is mounted on the main shaft. The pressure roller is rotatably mounted between the main shaft and the granulation mold and the pressure roller fixing plate. The motor is installed outside the granulation hopper and connected to the power input end of the main shaft. This application can solve the problem that granulators are unable to meet the requirements of low agglomeration rate and high particle strength when producing zinc oxide powder.

Description

Technical Field

[0001] This utility model relates to the technical field of zinc oxide production equipment, specifically to a zinc oxide powder granulator. Background Technology

[0002] Zinc oxide (ZnO) is a white inorganic compound widely used in rubber vulcanization accelerators, ceramic glazes, sunscreens, and pharmaceuticals. Due to its high surface energy and tendency to absorb moisture and static electricity, zinc oxide powder often spontaneously agglomerates during transport, forming aggregates with particle sizes exceeding 3-5 times their initial size. This not only reduces powder flowability but also leads to uneven dispersion in downstream processing.

[0003] Existing granulation equipment, such as roller press granulators, suffers from defects such as electrostatic runaway and uneven fluidization. Furthermore, friction between components and powder can increase static electricity generation, making it difficult to meet the requirements of low agglomeration rate and high particle strength for zinc oxide powder. Therefore, this application proposes a zinc oxide powder granulator. Utility Model Content

[0004] In order to overcome the problems in the background art, this utility model provides a zinc oxide powder granulator, which solves the problem that it is difficult for the granulator to meet the requirements of low agglomeration rate and high particle strength of zinc oxide powder when producing zinc oxide powder.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A zinc oxide powder granulator includes a feeding hopper, a granulation hopper, a granulation mold, a pressure roller, and a motor. The feeding hopper has a feed inlet at the top and a sloped bottom wall. A circular discharge outlet is located on the side wall adjacent to the bottom of the sloped bottom of the feeding hopper and communicates with the granulation hopper installed on one side of the feeding hopper. The granulation mold is annular, with one side fixed to the feeding hopper and the other side connected to the discharge outlet. The outer wall of the granulation mold and the inner wall of the granulation hopper form a granulation cavity. The bottom of the granulation hopper has a granulation outlet. A main shaft coaxially arranged with the granulation mold is installed inside the granulation hopper. A pressure roller fixing plate is installed on the main shaft. The pressure roller is rotatably installed between the main shaft and the granulation mold and the pressure roller fixing plate. The motor is installed outside the granulation hopper, and the power output end of the motor is connected to the power input end of the main shaft.

[0007] Furthermore, the inner wall of the feed hopper is covered with a conductive layer and has a grounding point.

[0008] Furthermore, an annular air chamber is installed inside the feed inlet, the air chamber is connected to a pulse air source, and a nozzle facing the feed inlet is installed on the air chamber.

[0009] Furthermore, a mixing rod is installed at the free end of the main shaft. The mixing rod is a ceramic rod that extends into the feed hopper in a V-shape.

[0010] The beneficial effects of this utility model are:

[0011] The inner wall of the feed hopper in this application is covered with a conductive layer and has a grounding point. An annular air chamber is installed in the feed inlet, and a ceramic mixing rod is installed at the free end of the main shaft. This solves the problem that it is difficult to meet the requirements of low agglomeration rate and high particle strength of zinc oxide powder when the granulator produces zinc oxide powder. Attached Figure Description

[0012] To clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are explained.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the granulation chamber structure of this utility model.

[0017] 1-Feeding bin, 2-Pelletizing bin, 21-Main shaft, 22-Pelletizing chamber, 23-Pelletizing port, 3-Pelletizing mold, 4-Pressure roller, 41-Pressure roller fixing plate, 5-Motor, 6-Air chamber, 7-Mixing bar, 11-Feeding port, 12-Discharge port, 13-Conductive layer, 14-Grounding point. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0019] This utility model discloses a zinc oxide powder granulator, see reference. Figure 1-4A zinc oxide powder granulator includes a feeding hopper 1, a granulation hopper 2, a granulation mold 3, a pressure roller 4, and a motor 5. The feeding hopper 1 has a feed inlet 11 at its top for adding zinc oxide powder. The bottom wall of the feeding hopper 1 is sloped, and a circular discharge outlet 12 is located on the adjacent side wall of the sloped bottom of the feeding hopper 1, communicating with the granulation hopper 2 installed on one side of the feeding hopper 1, allowing the powder to flow into the granulation hopper 2. The granulation mold 3 is annular and has granulation through holes. One side of the granulation mold 3 is fixed to the feeding hopper 1, and the other side is connected to the discharge outlet 12. The outer wall of the granulation mold 3 is flush with the inner wall of the granulation hopper 2. The granulation chamber 2 has a granulation outlet 23 at the bottom. The zinc oxide granules after rolling enter the granulation chamber 22 and are discharged from the granulation outlet 23. The granulation chamber 2 is equipped with a main shaft 21 coaxially arranged with the granulation mold 3. A pressure roller fixing plate 41 is installed on the main shaft 21. The pressure roller 4 is arranged between the main shaft 21 and the granulation mold 3 and is rotatably installed with the pressure roller fixing plate 41. The motor 5 is installed on the outside of the granulation chamber 2. The power output end of the motor 5 is connected to the power input end of the main shaft 21. The motor 5 drives the main shaft to rotate, causing the pressure roller 4 to rotate and crush the zinc oxide powder entering the granulation chamber 2. Granulation is completed through the granulation mold 3.

[0020] See Figure 1-4 The inner wall of the feeding hopper 1 is covered with a conductive layer 13 and has a grounding point 14, which can release static electricity in time and reduce the problem of agglomeration.

[0021] See Figure 1-4 The feed inlet 11 is equipped with an annular air chamber 6, which is connected to a pulse air source. The air chamber 6 is equipped with a nozzle facing the feed inlet 11, which can provide pneumatic fluidization, making the feed more uniform and avoiding powder bridging.

[0022] See Figure 1-4 The free end of the main shaft 21 is equipped with a mixing rod 7. The mixing rod 7 is a ceramic rod that extends into the feed hopper 1 in a V-shape. Ceramic is an insulator to reduce static electricity generated during the mixing process.

[0023] Work process:

[0024] When the motor 5 is started, zinc oxide powder enters the feed hopper 1 through the feed inlet 11. Under the fluidization effect of the nozzle in the air chamber 6, the powder enters the feed hopper 1. Under the stirring of the mixing rod 7, the powder enters the granulation hopper 2. When the powder comes into contact with the feed hopper 1, the static electricity is guided to the ground by the conductive layer 13. After being rolled by the pressure roller 4, the zinc oxide powder forms zinc oxide particles, which enter the granulation chamber 22 and are discharged from the granulation outlet 23 to complete the granulation.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A zinc oxide powder granulator, characterized in that: The system includes a feeding hopper (1), a granulation hopper (2), a granulation mold (3), a pressure roller (4), and a motor (5). The feeding hopper (1) has a feed inlet (11) at the top and a slope at the bottom. A circular discharge outlet (12) is provided on the side wall adjacent to the bottom of the slope of the feeding hopper (1) and is connected to the granulation hopper (2) installed on one side of the feeding hopper (1). The granulation mold (3) is annular. One side of the granulation mold (3) is fixed to the feeding hopper (1), and the other side is connected to the discharge outlet (12). The granulation outlet is located between the outer wall of the granulation mold (3) and the inner wall of the granulation hopper (2). The granulation chamber (2) has a granulation outlet (23) at the bottom. The granulation chamber (2) is equipped with a main shaft (21) coaxially arranged with the granulation mold (3). A pressure roller fixing plate (41) is installed on the main shaft (21). The pressure roller (4) is arranged between the main shaft (21) and the granulation mold (3) and is rotatably installed with the pressure roller fixing plate (41). The motor (5) is installed on the outside of the granulation chamber (2). The power output end of the motor (5) is connected to the power input end of the main shaft (21). The inner wall of the feeding chamber (1) is covered with a conductive layer (13) and is provided with a grounding point (14).

2. The zinc oxide powder granulator according to claim 1, characterized in that: An annular air chamber (6) is installed inside the feed inlet (11). The air chamber (6) is connected to a pulse air source. A nozzle facing the feed inlet (11) is installed on the air chamber (6).

3. The zinc oxide powder granulator according to claim 1, characterized in that: The free end of the main shaft (21) is equipped with a mixing rod (7), which is a ceramic rod that extends into the feed hopper (1) in a V-shape.

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