A low-temperature drying device for sago

Abstract

The utility model relates to lotus root starch processing technical field especially, relates to a lotus root starch low temperature drying device. The utility model provides such a kind of lotus root starch low temperature drying device, including drying material cylinder, apron, air inlet pipe and baffle, drying material cylinder top is covered with apron, drying material cylinder outside is connected and is communicated with two air inlet pipes, drying material cylinder bottom is screw thread type and is provided with baffle, further including servo motor, stirring frame and scraping mechanism, apron top is installed with servo motor, the output shaft of servo motor is connected with stirring frame, and stirring frame is provided with scraping mechanism, and scraping mechanism is used to scrape wet lotus root starch adhered in drying material cylinder inner wall. When stirring frame rotates, drive sleeve rotation, and then drive scraping plate rotation together, make scraping plate closely adhere to the inner wall movement of drying material cylinder, effectively scrape wet lotus root starch adhered on inner wall, prevent lotus root starch caking, paste, and keep inner wall clean, to maintain heat transfer efficiency and drying uniformity.

Description

Technical Field

[0001] This utility model relates to the field of lotus root starch processing technology, and in particular to a low-temperature drying device for lotus root starch. Background Technology

[0002] Low-temperature drying of lotus root starch is a processing technique that removes moisture from wet lotus root starch using methods such as hot air or vacuum at temperatures far below the starch gelatinization temperature (typically 50-65℃). Its core purpose is to preserve the natural properties of lotus root starch to the greatest extent possible.

[0003] Patent application publication number CN206963915U discloses a low-temperature drying device for adding auxiliary materials to lotus root powder, including a box body, a feeding hopper, and a discharging hopper. The feeding hopper is installed at an angle on the side wall of the box body and extends into the box body. The discharging hopper is located at the bottom of the box body and is equipped with a control valve. A circulating airflow pipe is provided on the other side wall of the box body. One end of the circulating airflow pipe is close to the top of the box body, and the other end is equipped with a circulating fan located on the side wall of the discharging hopper. A water-absorbing layer is provided in the middle part of the circulating airflow pipe. An electric heating plate is provided on the inner wall of the box body corresponding to the circulating fan, and the electric heating plate covers the air outlet of the circulating airflow pipe. An auxiliary material feeding pipe is provided above the air outlet of the circulating airflow pipe. Although the aforementioned patent simplifies the production process and equipment by simultaneously mixing and drying the raw materials and auxiliary materials during the addition of auxiliary materials in the lotus root starch processing, wet lotus root starch will adhere to the inner wall of the drying chamber during the drying process. If not handled in time, the lotus root starch adhering to the inner wall of the chamber is prone to clumping and gelatinization, increasing the difficulty of cleaning the inner wall and making it difficult to maintain heat transfer efficiency and drying uniformity.

[0004] In view of the existing patents, there is a need to provide a low-temperature drying device for lotus root powder that can scrape off the adhering wet lotus root powder. Utility Model Content

[0005] In order to overcome the shortcomings of existing patents, where wet lotus root powder adheres to the inner wall of the drying chamber during the drying process, and if not treated in time, the lotus root powder adhering to the inner wall of the chamber is prone to clumping and gelatinization, increasing the difficulty of cleaning the inner wall, and making it difficult to maintain heat transfer efficiency and drying uniformity, this utility model provides a low-temperature lotus root powder drying device that can scrape off the adhering wet lotus root powder.

[0006] The technical solution is as follows: A low-temperature drying device for lotus root starch includes a drying cylinder, a cover plate, an air inlet pipe, and a baffle plate. The top of the drying cylinder is covered with a cover plate, and two air inlet pipes are connected and communicated to the outside of the drying cylinder. A baffle plate is threadedly installed at the bottom of the drying cylinder. The device also includes a servo motor, a stirring frame, and a scraping mechanism. The servo motor is installed on the top of the cover plate, and the output shaft of the servo motor is connected to the stirring frame. A scraping mechanism is installed on the stirring frame and is used to scrape off the wet lotus root starch adhering to the inner wall of the drying cylinder.

[0007] Optionally, the scraping mechanism includes a sleeve, a scraper, and a limiting block. The sleeve is provided on the mixing frame, and the scraper is fixedly connected to the sleeve. The scraper is in close contact with the inner wall of the drying cylinder, and the limiting block is fixedly connected to the outer side of the sleeve. The bottom of the limiting block is in contact with the cover plate.

[0008] Optionally, it also includes a filter rack, a top cover, and a dehumidifying rod. Multiple filter racks are provided on the cover plate, the top of the filter racks is covered with a top cover, and a dehumidifying rod is provided at the bottom of the top cover.

[0009] Optionally, it also includes an anti-stick plate, which is provided on the scraper.

[0010] Optionally, it also includes a protective sleeve, which is fitted on the outside of the sleeve and contacts the cover plate.

[0011] Optionally, the blades of the agitator are helical blades.

[0012] Compared with the prior art, the present invention provides a low-temperature drying device for lotus root powder, which has the following beneficial effects: 1. When the stirring frame rotates, it drives the sleeve to rotate, which in turn drives the scraper to rotate together, so that the scraper moves closely against the inner wall of the drying cylinder, effectively scraping off the wet lotus root powder adhering to the inner wall, preventing the lotus root powder from clumping and gelatinizing, and keeping the inner wall clean, so as to maintain heat transfer efficiency and drying uniformity.

[0013] 2. By contacting the humid and hot air with the dehumidifying rod inside the filter frame, the dehumidifying rod dehumidifies the discharged humid and hot air, thereby helping to reduce the humidity of the discharged gas, maintain a low humidity environment inside the drying cylinder, and improve drying efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional cross-sectional view of the servo motor, stirring rack, and sleeve components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the anti-stick plate, limiting block, and protective sleeve components of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the filter frame, top cover, and dehumidification rod of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Drying cylinder, 2. Cover plate, 3. Air inlet pipe, 4. Baffle plate, 5. Servo motor, 6. Stirring rack, 7. Sleeve, 8. Scraper, 9. Anti-stick plate, 10. Limiting block, 11. Protective sleeve, 12. Filter rack, 13. Top cover, 14. Dehumidifying rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: A low-temperature drying device for lotus root starch (see example 1). Figures 1-3 The system includes a drying cylinder 1, a cover plate 2, an air inlet pipe 3, and a baffle plate 4. The top of the drying cylinder 1 is covered by the cover plate 2. Two air inlet pipes 3 are connected and communicate with the outside of the drying cylinder 1. The bottom of the drying cylinder 1 is threaded with a baffle plate 4. The system also includes a servo motor 5, a stirring frame 6, and a scraping mechanism. The servo motor 5 is mounted on the top of the cover plate 2. The output shaft of the servo motor 5 is connected to the stirring frame 6. The stirring frame 6 is equipped with a scraping mechanism, which is used to scrape off the wet lotus root powder adhering to the inner wall of the drying cylinder 1. The scraping mechanism includes a sleeve 7, a scraper plate 8, and a limiting block 10. The sleeve 7 is mounted on the stirring frame 6, and a fixed... A scraper 8 is connected and is tightly attached to the inner wall of the drying cylinder 1. A limiting block 10 is fixedly connected to the outside of the sleeve 7, and the bottom of the limiting block 10 contacts the cover plate 2. An anti-stick plate 9 is provided on the scraper 8 to prevent wet lotus root powder from sticking to the scraper 8. A protective sleeve 11 is fitted on the outside of the sleeve 7 and contacts the cover plate 2 to prevent the sleeve 7 from directly contacting the cover plate 2 when rotating. The blades of the stirring frame 6 are spiral blades. The spiral structure can generate an upward lifting force to transport and throw the material at the bottom upward, enhance the contact area and uniformity between the lotus root powder and the low temperature hot air, and avoid uneven drying or local overheating caused by the accumulation of lotus root powder.

[0021] When this device is needed, open the cover plate 2 and pour the wet lotus root powder into the drying cylinder 1. After pouring, close the cover plate 2 and connect the air outlet pipe and air inlet pipe 3 of the external drying equipment. The low-temperature hot air generated by the external drying equipment enters the drying cylinder 1 through the two air inlet pipes 3. Start the servo motor 5. The output shaft of the servo motor 5 rotates, driving the stirring frame 6 to rotate, stirring and mixing the wet lotus root powder in the drying cylinder 1. The wet lotus root powder particles are continuously lifted and dispersed under the action of the stirring frame 6, fully exposed to the incoming low-temperature hot air. The heat carried by the hot air is transferred to the lotus root powder particles, making them... The internal moisture evaporates, thus achieving low-temperature drying of the wet lotus root powder. When the stirring rack 6 rotates, it drives the sleeve 7 set on it to rotate, which in turn drives the scraper 8 to rotate together. The scraper 8 moves closely against the inner wall of the drying cylinder 1, effectively scraping off the wet lotus root powder adhering to the inner wall, preventing the lotus root powder from clumping and gelatinizing, and keeping the inner wall clean to maintain heat transfer efficiency and drying uniformity. After drying is completed, the external drying equipment and servo motor 5 are turned off, and the hot air supply and stirring are stopped. After the temperature inside the cylinder drops appropriately, the baffle plate 4 is unscrewed, and the dried lotus root powder can be discharged from the opening at the bottom of the drying cylinder 1.

[0022] Example 2: Based on Example 1, please refer to... Figure 1 , Figure 2 and Figure 4 It also includes a filter rack 12, a top cover 13 and a dehumidifying rod 14. Four filter racks 12 are provided on the cover plate 2. The top cover 13 covers the top of the filter racks 12. The dehumidifying rod 14 is provided at the bottom of the top cover 13. When the dehumidifying rod 14 needs to be replaced, the top cover 13 is pulled up to remove the dehumidifying rod 14 together for replacement.

[0023] The water vapor generated during the drying process rises with the hot air, forming humid air. This humid air flows upward and is discharged through the filter frame 12 on the cover plate 2. The filter frame 12 can effectively prevent the powder in the drying cylinder from being carried out by the rising airflow. During the discharge process, the humid air comes into contact with the dehumidification rod 14 inside the filter frame 12. The dehumidification rod 14 dehumidifies the discharged humid air, thereby helping to reduce the humidity of the discharged gas, maintain a low humidity environment inside the drying cylinder, and improve drying efficiency.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-temperature drying device for lotus root starch, comprising a drying cylinder (1), a cover plate (2), an air inlet pipe (3), and a baffle plate (4), wherein the top of the drying cylinder (1) is covered with the cover plate (2), two air inlet pipes (3) are connected and communicated to the outside of the drying cylinder (1), and a baffle plate (4) is threadedly provided at the bottom of the drying cylinder (1), characterized in that, It also includes a servo motor (5), a stirring rack (6) and a scraping mechanism. The servo motor (5) is installed on the top of the cover plate (2). The output shaft of the servo motor (5) is connected to the stirring rack (6). The stirring rack (6) is equipped with a scraping mechanism, which is used to scrape off the wet lotus root powder adhering to the inner wall of the drying cylinder (1).

2. The low-temperature drying device for lotus root powder according to claim 1, characterized in that, The scraping mechanism includes a sleeve (7), a scraper (8), and a limiting block (10). The sleeve (7) is provided on the mixing frame (6), and the scraper (8) is fixedly connected to the sleeve (7). The scraper (8) is close to the inner wall of the drying cylinder (1). The limiting block (10) is fixedly connected to the outside of the sleeve (7), and the bottom of the limiting block (10) is in contact with the cover plate (2).

3. The low-temperature drying device for lotus root powder according to claim 2, characterized in that, It also includes a filter rack (12), a top cover (13) and a dehumidifying rod (14). Multiple filter racks (12) are provided on the cover plate (2). The top of the filter rack (12) is covered with a top cover (13), and the bottom of the top cover (13) is provided with a dehumidifying rod (14).

4. The low-temperature drying device for lotus root starch according to claim 3, characterized in that, It also includes an anti-stick plate (9), which is provided on the scraper plate (8).

5. The low-temperature drying device for lotus root starch according to claim 4, characterized in that, It also includes a protective sleeve (11), which is fitted on the outside of the sleeve (7) and contacts the cover plate (2).

6. The low-temperature drying device for lotus root powder according to claim 5, characterized in that, The blades of the stirring rack (6) are helical blades.

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