Plastic rice drying device

Abstract

The utility model relates to the technical field of plastic rice processing, in particular to a plastic rice drying device, which comprises a drying cylinder, a plurality of groups of spreading units, a driving piece and a scraper piece, the upper end of the drying cylinder is provided with a feed port, the bottom of the drying cylinder is a hollow discharge end, the plurality of groups of spreading units are sequentially stacked along the axis in the drying cylinder, and the driving piece is arranged on the drying cylinder. The material spreading unit is used for evenly spreading materials entering the drying cylinder from the feeding port, the materials on the material spreading unit are flatly spread on the material spreading unit from the feeding port, the heating piece heats the materials on the material spreading unit, moisture of the materials on the material spreading unit is evaporated, the material spreading unit is driven by the driving piece to rotate, and the materials on the material spreading unit are evenly spread. The materials are continuously fed and discharged to the material spreading disc, meanwhile, the dried materials are continuously scraped to the lower-layer material spreading unit through the scraping plate piece to be continuously heated and dried, the materials in the drying cylinder are dried in a multi-stage tiled state, concentrated accumulation of the materials is reduced, the internal heat exchange efficiency is improved, and the drying effect is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of plastic rice processing technology, and in particular to a plastic rice drying device. Background Technology

[0002] Plastic pellets, also known as plastic granules, are produced in modified plastics processing by extrusion equipment and molds. After processing and screening, moisture easily remains on their surface. Since most plastic raw material granules are highly hygroscopic, they will begin to absorb moisture once removed from their moisture-proof sealed bags and exposed to the atmosphere. If the plastic pellets used for molding have absorbed moisture or have water adhering to their surface, it can easily cause many problems during subsequent processing, such as injection molding and extrusion. These problems can result in appearance defects such as silver streaks, bubbles, blurriness, and poor transparency on the surface of the product. They can also make weld lines more obvious and, in severe cases, reduce the strength of the product, greatly affecting its quality and performance. Therefore, drying is an indispensable step before the plastic pellets are used in subsequent processes.

[0003] Currently, the drying process for plastic pellets generally involves pouring them into a drying drum. To ensure even drying, the pellets are stirred inside the drum to ensure uniform heating. However, this method has some drawbacks. For example, the material near the stirring blades is frequently agitated and heated thoroughly, while areas such as the corners of the drum wall and the bottom of the stirring shaft are difficult to agitate effectively. Furthermore, the concentrated material forms a dense bed, resulting in low heat exchange efficiency inside the drying drum.

[0004] Therefore, based on the above situation, we designed a plastic rice drying device to solve the above problems. Utility Model Content

[0005] This invention provides a plastic rice drying device to solve the problems in the prior art.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A plastic rice drying device includes a drying cylinder, multiple sets of material spreading units, a driving component, and a scraper component. The upper end of the drying cylinder is provided with a feeding port, and the bottom of the drying cylinder is a hollowed-out discharging end. Multiple sets of material spreading units are arranged in sequence along the internal axis of the drying cylinder. The material spreading units are used to evenly spread the material entering the drying cylinder from the feeding port. Each material spreading unit is provided with a heating element and has a discharging port for material to fall. The output shaft of the driving component is connected to the material spreading unit and is used to drive the material spreading unit to rotate circumferentially. The scraper component is connected to the drying cylinder and corresponds one-to-one with the number of material spreading units. It is used to scrape the material located on the upper material spreading unit through the discharging port to the lower material spreading unit.

[0008] Preferably, the material spreading unit includes multiple support plates disposed inside the drying cylinder and multiple material spreading trays attached to the support plates, and the discharge port is opened on the material spreading trays and the support plates.

[0009] Preferably, the diameter of the plurality of spreading discs gradually increases from top to bottom.

[0010] Preferably, a flow channel is provided between two adjacent material spreading units, and multiple flow guide plates are provided in the flow channel.

[0011] Preferably, the middle part of the spreading tray has an upwardly arched protrusion.

[0012] Preferably, the material spreading tray is provided with a baffle plate for blocking the inlet, and the baffle plate is located above the outlet.

[0013] The beneficial effects of this utility model are as follows: by spreading the material evenly into the spreading unit from the feed inlet, the heating element heats the material on the spreading unit, causing the moisture in the material on the spreading unit to evaporate. As the driving element drives the spreading unit to rotate, while continuously feeding and unloading the material onto the spreading tray, the scraper continuously scrapes the dried material onto the lower spreading unit for continued heating and drying. By drying the material in the drying cylinder in a multi-level even state, the material accumulation is reduced, the internal heat exchange efficiency is improved, and the drying effect is enhanced. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 A three-dimensional structural schematic diagram provided for this utility model;

[0016] Figure 2 A cross-sectional structural schematic diagram provided for this utility model;

[0017] Figure 3 This is a partial structural schematic diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the material spreading unit in this utility model.

[0019] In the diagram, 1 is the drying cylinder; 2 is the feed inlet; 3 is the material spreading unit; 31 is the support plate; 32 is the material spreading tray; 4 is the heating element; 5 is the discharge port; 6 is the driving element; 7 is the output shaft; 8 is the scraper; 9 is the guide channel; 10 is the guide plate; 11 is the protrusion; and 12 is the baffle plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0021] Reference Figures 1-4 As shown, a plastic rice drying device includes a drying cylinder 1. A feed inlet 2 is provided at the upper end of the drying cylinder 1. During use, the material to be dried enters the drying cylinder 1 through the feed inlet 2. Multiple sets of material spreading units 3 are stacked sequentially from top to bottom inside the drying cylinder 1. Simultaneously, a drive unit 6 mounted on the drying cylinder 1 is activated. The output shaft 7 of the drive unit 6 is connected to the material spreading units 3, driving the material spreading units 3 to rotate slowly in a circular motion. As the feed inlet 2 continuously feeds material into the drying cylinder 1 and the material spreading units 3 rotate slowly, the material is evenly spread on the material spreading units 3, reducing the dense accumulation of material inside the drying cylinder 1. Simultaneously, a heating element 4 is provided inside the material spreading unit 3. The heating element 4 can be a heating coil, heating wire, etc. The material is laid inside the material-laying unit 3, which heats the material and evaporates the moisture on the surface. The evaporated air forms hot air that rises. At the same time, the drying cylinder 1 allows cold air from the outside to be supplied to the drying cylinder 1 through the hollowed-out discharge end at the bottom, forming an airflow circulation inside the drying cylinder 1. During this process, after the material on the first-level material-laying unit 3 is initially dried, the scraper pieces 8, which are set inside the drying cylinder 1 in a one-to-one correspondence with the number of material-laying units 3, scrape the material through the discharge port 5, so that the material falls onto the next layer of material-laying unit 3 to continue the above drying process, until it falls from the last-level material-laying unit 3 and flows out from the discharge end at the bottom of the drying cylinder 1. Compared with traditional drying devices, this method improves the heat exchange efficiency inside the drying cylinder 1 and enhances the drying effect.

[0022] Reference Figure 4As shown, the material spreading unit 3 further includes multiple support plates 31 disposed inside the drying cylinder 1 and multiple spreading trays 32 attached to the support plates 31. The discharge port 5 is located on the spreading trays 32 and the support plates 31. The support plates 31 are rotatably connected to the output shaft 7 of the drive unit 6, and the spreading trays 32 are fixedly connected to the output shaft 7 of the drive unit 6. When the output shaft 7 of the drive unit 6 rotates, it drives the spreading trays 32 to rotate, causing the material to be evenly spread on the spreading trays 32. Additionally, the discharge port 5 can be two symmetrically arranged discharge ports 5. For example, if the spreading trays 32 rotate counterclockwise, the inlet 2 will discharge the material from... Material is discharged from one of the outlets 5. As the spreading tray 32 rotates, the support plate 31 and the outlet 5 on the spreading tray 32 gradually become misaligned. The outlets 5 of the spreading tray 32 and the support plate 31 gradually close, and the material is temporarily trapped on the spreading tray 32 and dried by the heating element 4 inside the spreading tray 32. After the spreading tray 32 rotates one revolution, its outlet 5 and the outlet 5 of the support plate 31 completely overlap again. At this time, the scraper 8 scrapes the dried material from the other outlet 5 and transfers it to the lower spreading unit 3 for further processing.

[0023] The material spreading tray 32 is equipped with a baffle plate 12 for blocking the feed inlet 2. The baffle plate 12 is located above the discharge outlet 5. When the material spreading tray 32 rotates, the baffle plate 12 simultaneously blocks the feed inlet 2 when the discharge outlet 5 on the support plate 31 coincides with the discharge outlet 5 on the material spreading tray 32, preventing new material from directly passing through the material spreading unit 3 and falling into the lower layer, thereby improving the controllability of the drying process and the drying efficiency.

[0024] Reference Figure 2 , Figure 3 As shown, the diameters of the multiple spreading trays 32 gradually increase from top to bottom. When the upper material is scraped off by the scraper 8, the scraper 8 will gradually gather the material. When the gathered material falls from the discharge port 5, there may be a sudden excessive drop of material. The lower spreading tray 32 has a larger area. If a large amount of material suddenly falls, the lower spreading tray 32 can also reduce the accumulation of material, always maintaining a uniform distribution of material on each spreading tray 32, ensuring uniform heat conduction during the drying process, and improving the overall drying effect.

[0025] Reference Figure 2 , Figure 3As shown, a guide channel 9 is further provided between two adjacent material spreading units 3. The guide channel 9 can form a closed or semi-closed material transmission path between adjacent material spreading units 3, ensuring that the material falling from the outlet 5 of the upper material spreading tray 32 falls along a preset trajectory and accurately falls to the designated area of ​​the lower material spreading plate. At the same time, the guide plates 10 inside can be arranged in an inclined, staggered or stacked manner to form a multi-level buffer structure. When the material falls, it hits the surface of the guide plate 10, reducing the vertical falling speed and making it less likely to form local accumulation. With the rotation of the material spreading tray 32, it can achieve uniform distribution more quickly.

[0026] Reference Figures 2-4 As shown, further, an upwardly arched protrusion 11 is provided in the middle of the material spreading tray 32. The arched structure of the protrusion 11, such as a truncated cone or a hemispherical shape, makes the surface of the material spreading tray 32 form a slope with a high center and a low edge. When the material spreading tray 32 rotates, the material slides from the top of the protrusion to the edge under the action of centrifugal force. Through the slope design, the material in the central area continues to flow to the edge under the action of the component force of gravity, eliminating the risk of central stagnation and ensuring that the material on the entire tray participates in drying.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic rice drying device, characterized in that, include; The drying cylinder (1) has a feed inlet (2) at its upper end and a hollowed-out discharge end at its bottom. Multiple sets of material spreading units (3) are stacked sequentially along the axis inside the drying cylinder (1). The material spreading unit (3) is used to evenly spread the material entering the drying cylinder (1) from the feed inlet (2). The material spreading unit (3) is equipped with a heating element (4) and has a discharge port (5) for the material to fall. The drive unit (6) has an output shaft (7) connected to the material spreading unit (3) to drive the material spreading unit (3) to rotate circumferentially. Scraper (8), which is connected to the drying cylinder (1) and corresponds one-to-one with the number of the material spreading unit (3), is used to scrape the material on the upper material spreading unit (3) through the discharge port (5) to the lower material spreading unit (3).

2. The plastic rice drying device according to claim 1, characterized in that, The material spreading unit (3) includes multiple support plates (31) located inside the drying cylinder (1) and multiple material spreading trays (32) attached to the support plates (31). The discharge port (5) is opened on the material spreading trays (32) and the support plates (31).

3. The plastic rice drying device according to claim 2, characterized in that, The diameter of the plurality of spreading discs (32) gradually increases from top to bottom.

4. The plastic rice drying device according to claim 1, characterized in that, A flow channel (9) is provided between two adjacent material spreading units (3), and multiple flow guide plates (10) are provided in the flow channel (9).

5. A plastic rice drying device according to claim 2, characterized in that, The middle part of the spreading tray (32) is provided with an upwardly arched protrusion (11).

6. A plastic rice drying device according to claim 2, characterized in that, The material spreading tray (32) is provided with a baffle plate (12) for blocking the feed inlet (2), and the baffle plate (12) is located above the discharge outlet (5).

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