Plastic particle drying device

Abstract

The utility model relates to the technical field of drying equipment, and discloses a plastic particle drying device which comprises an outer frame, a mixing hopper is fixedly installed in the outer frame, an air inlet pipe is fixedly installed on the outer side of the mixing hopper and connected with the output end of an external air heater through an air pipe, and a discharging disc is further fixedly installed on the outer frame below the mixing hopper. A drying box is fixedly mounted on the mixing hopper, and a first spiral screen plate and a second spiral screen plate are fixedly mounted in the drying box. A first spiral net plate and a second spiral net plate which are arranged in a staggered mode are arranged in the drying box, two drying channels can be formed in the drying box in cooperation with a center shaft and a first partition plate, and then plastic particles in a feeding hopper are equally distributed to the first spiral net plate and the second spiral net plate at a constant speed in cooperation with two material distribution impellers in a material distribution box; and meanwhile, the plastic particles fall into the discharging disc through the mixing hopper, and the drying quality of the plastic particles is improved.

Description

Technical Field

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

[0002] After plastic granules are produced, moisture may be introduced due to the moisture content of raw materials and process water. If residual moisture is present, it will cause defects such as bubbles, silver streaks, and rough surfaces in the subsequent molding and processing of plastic granules. This will not only affect the appearance of the product, but also reduce its mechanical properties. Therefore, plastic granules must be dried after production to avoid an increase in scrap rate due to excessive moisture.

[0003] The existing Chinese utility model patent, CN214819962U, discloses a plastic granule drying and collecting device. This application includes a machine body, a base, an air supply pipe, a drying chamber, a drying rack, a steam pipe, and a vacuum pump. The base is located on the lower end of the machine body, and the air supply pipe is connected to the lower left side of the machine body. The drying chamber is located inside the machine body, and the air supply pipe is connected to the air outlet inside the drying chamber. The drying rack is located in the middle of the drying chamber, and the steam pipe is located around the drying rack. When drying plastic granules, this application requires placing the plastic granules on the drying rack. However, in order to ensure the drying quality, the thickness of the plastic granules spread on the drying rack cannot be too thick. Therefore, the drying efficiency of this application is not high, and it cannot provide large-scale, continuous drying of plastic granules in industrial production processes. Utility Model Content

[0004] The purpose of this invention is to provide a plastic granule drying device that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A plastic granule drying device includes an outer frame, a mixing hopper fixedly installed inside the outer frame, an air inlet pipe fixedly installed outside the mixing hopper and connected to the output end of an external hot air blower via an air duct, a feeding tray fixedly installed below the mixing hopper on the outer frame, a drying chamber fixedly installed on the mixing hopper, a first spiral mesh plate and a second spiral mesh plate fixedly installed inside the drying chamber, a feeding hopper fixedly installed inside the outer frame above the drying chamber, a distributing box fixedly connected between the drying chamber and the feeding hopper, and two distributing impellers movably installed inside the distributing box.

[0007] As a further preferred embodiment of this utility model, a frame is fixedly installed on the drying box near the dispensing box, and a geared motor is fixedly installed on one side of the frame. The geared motor is electrically connected to an external main controller via a cable, and the geared motor can provide power for the rotation of the dispensing impeller.

[0008] As a further preferred embodiment of this utility model, the first spiral mesh plate and the second spiral mesh plate are arranged alternately, and a central shaft is fixedly connected to the middle of the first spiral mesh plate and the second spiral mesh plate. A first partition plate is fixedly connected between one end of the first spiral mesh plate and the central shaft. The upper surface of the first partition plate is at the same level as the upper surface of the drying chamber. The first spiral mesh plate and the second spiral mesh plate are arranged alternately in the drying chamber, which can divide the drying chamber into two feeding drying channels, thereby improving the drying efficiency and drying quality of plastic particles per unit time.

[0009] As a further preferred embodiment of this utility model, a second partition is fixedly installed in the middle of the material distribution box. The top of the second partition has a double-sided sloping surface, and the bottom of the second partition abuts against the top of the first partition. The second partition in the material distribution box can separate the material discharge channel of the material distribution box.

[0010] As a further preferred embodiment of the present invention, the material distribution impeller also includes a rotating shaft, both ends of which are rotatably mounted in a shaft seat on one side of the material distribution box, and multiple material distribution blades are fixedly mounted on the outer side of the rotating shaft located inside the material distribution box.

[0011] As a further preferred embodiment of this utility model, gears are fixedly installed at one end of each of the two rotating shafts, and the two gears are meshed with each other. One end of one of the rotating shafts is also fixedly connected to the output end of the geared motor through a coupling. Two rotating shafts that can rotate synchronously are provided in the material distribution box, and multiple material distribution blades are provided on the outside of the rotating shafts, so as to evenly distribute the plastic particles in the feed hopper to the first spiral mesh plate and the second spiral mesh plate, thereby realizing the dual-channel drying function in the drying box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, a first spiral mesh plate and a second spiral mesh plate are arranged in an alternating manner inside the drying chamber. This, together with the central shaft and the first partition plate, forms two drying channels inside the drying chamber. Then, in conjunction with the two distributing impellers in the distributing box, the plastic particles in the feed hopper are uniformly and equally distributed to the first spiral mesh plate and the second spiral mesh plate, thereby improving the drying efficiency of the plastic particles per unit time. At the same time, the plastic particles fall into the discharge tray through the mixing hopper, improving the drying quality of the plastic particles. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the drying oven of this utility model;

[0016] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 4 This is a schematic diagram of the structure of the first spiral mesh plate and the second spiral mesh plate of this utility model;

[0018] Figure 5 This is a schematic diagram of the material distribution box structure of this utility model;

[0019] Figure 6 This is a cross-sectional view of the material distribution box of this utility model.

[0020] In the diagram: 1. Outer frame; 2. Mixing hopper; 3. Air inlet pipe; 4. Feed tray; 5. Drying box; 6. Feed hopper; 7. Distribution box; 8. Distribution impeller; 9. First spiral mesh plate; 10. Second spiral mesh plate; 11. Frame; 12. Gear motor; 13. Central shaft; 14. First partition plate; 15. Second partition plate; 16. Rotating shaft; 17. Distribution blades; 18. Gear. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-6 As shown, the present invention provides a plastic granule drying device, including an outer frame 1, a mixing hopper 2 fixedly installed inside the outer frame 1, an air inlet pipe 3 fixedly installed outside the mixing hopper 2, and the air inlet pipe 3 connected to the output end of an external hot air blower through an air duct. A feeding tray 4 is also fixedly installed on the outer frame 1 below the mixing hopper 2. A drying chamber 5 is fixedly installed on the mixing hopper 2. A first spiral mesh plate 9 and a second spiral mesh plate 10 are fixedly installed inside the drying chamber 5. A feeding hopper 6 is also fixedly installed inside the outer frame 1 above the drying chamber 5. A distribution box 7 is fixedly connected between the drying chamber 5 and the feeding hopper 6. Two distribution impellers 8 are movably installed inside the distribution box 7.

[0023] like Figure 3 As shown, a frame 11 is fixedly installed on the drying box 5 near the dispensing box 7. A geared motor 12 is fixedly installed on one side of the frame 11. The geared motor 12 is electrically connected to an external main controller via a cable. The geared motor 12 can provide power for the rotation of the dispensing impeller 8.

[0024] like Figure 2 , Figure 4As shown, the first spiral mesh plate 9 and the second spiral mesh plate 10 are arranged alternately, and a central shaft 13 is fixedly connected to the middle of the first spiral mesh plate 9 and the second spiral mesh plate 10. A first partition plate 14 is fixedly connected between one end of the first spiral mesh plate 9 and the second spiral mesh plate 10 and the central shaft 13. The upper surface of the first partition plate 14 is at the same level as the upper surface of the drying chamber 5. The first spiral mesh plate 9 and the second spiral mesh plate 10 are arranged alternately in the drying chamber 5, which can divide the drying chamber 5 into two feeding drying channels, thereby improving the drying efficiency and drying quality of plastic particles per unit time.

[0025] like Figures 5-6 As shown, a second partition 15 is fixedly installed in the middle of the material distribution box 7. The top of the second partition 15 has double-sided slopes, and the bottom of the second partition 15 abuts against the top of the first partition 14. The second partition 15 in the material distribution box 7 can separate the material discharge channel of the material distribution box 7. The material distribution impeller 8 also includes a rotating shaft 16. Both ends of the rotating shaft 16 are rotatably installed in the shaft seat on one side of the material distribution box 7. Multiple material distribution blades 17 are also fixedly installed on the outside of the rotating shaft 16 located in the material distribution box 7. Gears 18 are fixedly installed on one end of each of the two rotating shafts 16. The two gears 18 are meshed with each other, and one end of one of the rotating shafts 16 is also fixedly connected to the output end of the geared motor 12 through a coupling. The material distribution box 7 is provided with two rotating shafts 16 that can rotate synchronously, and multiple material distribution blades 17 are provided on the outside of the rotating shafts 16, so as to evenly distribute the plastic particles in the feed hopper 6 to the first spiral mesh plate 9 and the second spiral mesh plate 10, thereby realizing the dual-channel drying function in the drying box 5.

[0026] It should be noted that this utility model is a plastic granule drying device. Plastic granules enter the distribution box 7 from the feed hopper 6. The external main controller controls the start of the reduction motor 12. The reduction motor 12 drives one of the rotating shafts 16 to rotate through the coupling. The gears 18 at one end of the two rotating shafts 16 mesh with each other, so that the two rotating shafts 16 rotate synchronously. The distribution blades 17 on the outside of the rotating shafts 16 evenly distribute the plastic granules in the feed hopper 6 into the two discharge channels separated by the second partition 15 in the distribution box 7. Then, the plastic granules fall onto the first spiral mesh plate 9 and the second spiral mesh plate 10 arranged alternately in the drying box 5. The external hot air blower draws air through the air intake. Pipe 3 delivers hot air into mixing hopper 2. The hot air rises into drying chamber 5 and comes into full contact with the plastic granules falling along the first spiral mesh plate 9 and the second spiral mesh plate 10, drying them and discharging them from the air outlet with a filter screen at the top of drying chamber 5. The dried plastic granules fall into mixing hopper 2, where they are further mixed evenly with the hot air, and finally fall into discharge tray 4 for collection. This achieves uniform and equal distribution of plastic granules in the two drying channels through the diversion action of the distribution impeller 8, and extends the residence time of the granules in drying chamber 5 by utilizing the first spiral mesh plate 9 and the second spiral mesh plate 10, thereby improving the drying efficiency per unit time in conjunction with hot air circulation.

[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 granule drying device, characterized in that: The device includes an outer frame (1), a mixing hopper (2) is fixedly installed inside the outer frame (1), an air inlet pipe (3) is fixedly installed on the outside of the mixing hopper (2), and the air inlet pipe (3) is connected to the output end of an external hot air blower through an air pipe. A feeding tray (4) is also fixedly installed on the outer frame (1) below the mixing hopper (2). A drying box (5) is fixedly installed on the mixing hopper (2). A first spiral mesh plate (9) and a second spiral mesh plate (10) are fixedly installed inside the drying box (5). A feeding hopper (6) is also fixedly installed inside the outer frame (1) above the drying box (5). A distribution box (7) is fixedly connected between the drying box (5) and the feeding hopper (6). Two distribution impellers (8) are movably installed inside the distribution box (7).

2. The plastic granule drying device according to claim 1, characterized in that: A frame (11) is fixedly installed on the drying box (5) near the dispensing box (7). A geared motor (12) is fixedly installed on one side of the frame (11). The geared motor (12) is electrically connected to an external main controller via a cable.

3. The plastic granule drying device according to claim 1, characterized in that: The first spiral mesh plate (9) and the second spiral mesh plate (10) are arranged alternately, and a central shaft (13) is fixedly connected to the middle of the first spiral mesh plate (9) and the second spiral mesh plate (10). A first partition plate (14) is fixedly connected between one end of the first spiral mesh plate (9) and the second spiral mesh plate (10) and the central shaft (13). The upper surface of the first partition plate (14) is at the same level as the upper surface of the drying oven (5).

4. A plastic granule drying device according to claim 2, characterized in that: The material distribution box (7) has a second partition (15) fixedly installed in the middle. The top of the second partition (15) is a double-sided slope, and the bottom of the second partition (15) abuts against the top of the first partition (14).

5. A plastic granule drying device according to claim 4, characterized in that: The material distribution impeller (8) also includes a rotating shaft (16), both ends of which are rotatably installed in the shaft seat on one side of the material distribution box (7). Multiple material distribution blades (17) are also fixedly installed on the outside of the rotating shaft (16) located inside the material distribution box (7).

6. A plastic granule drying device according to claim 5, characterized in that: One end of each of the two shafts (16) is fixedly mounted with a gear (18), the two gears (18) mesh with each other, and one end of one of the shafts (16) is also fixedly connected to the output end of the geared motor (12) via a coupling.

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