Rotary dryer

Abstract

The utility model relates to the technical field of drying equipment, and provides a rotary dryer which comprises a supporting frame and a drying cylinder. The top of the drying cylinder is provided with a feed inlet, and the bottom is provided with a discharge outlet. A stirring mechanism is arranged in the drying cylinder and comprises a driving motor mounted on the supporting frame, a rotating shaft rotationally mounted in the drying cylinder and stirring blades arranged on the rotating shaft; the rotating shaft is connected with the driving motor and controlled by the driving motor to rotate; a scraping mechanism is arranged in the drying cylinder, and the scraping mechanism can rotate in the direction opposite to the stirring blades to scrape the inner wall of the drying cylinder when the rotating shaft rotates; through the arrangement of the scraping mechanism, the inner wall of the drying cylinder is scraped, and materials adhering to the inner wall of the drying cylinder in the stirring process are scraped off; and the scraping direction is opposite to the stirring direction, the materials can be dispersed by moving the materials in the two directions during drying, and the drying effect and the drying uniformity are improved.

Description

Technical Field

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

[0002] In the processing of theanine, theanine needs to be dried. The prior art discloses a theanine drying equipment, including a base plate and a drying tank. The base plate is connected to the drying tank through a support plate. A collection component matching the drying tank is provided under the base plate. An auxiliary drying mechanism is provided inside the drying tank, and a knocking mechanism is provided at the top of the outside of the drying tank. The knocking mechanism and the auxiliary drying mechanism are connected through a drive component.

[0003] In existing technologies, when drying theanine, some fragments adhere to the inner wall of the dryer, producing charred material. The charred material mixed with the material affects the quality of theanine. Furthermore, the current method of mixing the material evenly during drying is not ideal, which easily leads to the material clumping together and being difficult to disperse, thus affecting the drying effect. Utility Model Content

[0004] This invention provides a rotary dryer to solve the problems mentioned in the background art.

[0005] In view of this, the present invention aims to provide a rotary dryer, in which the dryer includes a support frame and a drying cylinder disposed on the support frame; the top of the drying cylinder has a feed inlet and the bottom has a discharge outlet;

[0006] The drying cylinder is equipped with a stirring mechanism, which includes a drive motor mounted on a support frame, a rotating shaft rotatably mounted inside the drying cylinder, and stirring blades mounted on the rotating shaft; the rotating shaft is connected to the drive motor and rotates under the control of the drive motor.

[0007] The drying cylinder is equipped with a scraping mechanism, which can scrape the inner wall of the drying cylinder by rotating in the opposite direction to the stirring blade when the rotating shaft rotates.

[0008] By setting up a scraping mechanism, the inner wall of the drying cylinder is scraped during the stirring operation of the stirring mechanism. The scraping mechanism removes the material that adheres to the inner wall of the drying cylinder during the stirring process, thus preventing the material from sticking to the inner wall of the drying cylinder for a long time and causing scorching, which would affect the quality of the product. Moreover, the scraping direction is opposite to the stirring direction, which can deflect the movement direction of the material during stirring, thereby improving the drying effect and uniformity.

[0009] Furthermore, a partition is provided inside the drying cylinder, which divides the interior of the drying cylinder into a stirring chamber and a driving chamber, and the stirring blade is disposed inside the stirring chamber;

[0010] The scraping mechanism includes a driving component, a rotating ring, and a scraper. The driving component is located in the driving cavity and is connected to the rotating ring and the rotating shaft. The scraper is located in the stirring cavity, is connected to the rotating ring, and is in contact with the inner wall of the drying cylinder.

[0011] The system includes a drive chamber and a stirring chamber. The drive unit is located inside the drive chamber, while the material is dried inside the stirring chamber. The drive unit is linked with the stirring mechanism, and only one drive motor is needed to perform both stirring and scraping functions.

[0012] Furthermore, the scraper is configured as multiple scrapers; multiple scrapers can improve the effect of turning the material.

[0013] Furthermore, a rotating shaft is provided on the rotating ring, and a torsion spring is provided on the rotating shaft. One end of the scraper is mounted on the rotating shaft through the torsion spring, so that the scraper can always be in close contact with the inner wall of the drying cylinder.

[0014] Furthermore, the driving component includes a first tooth disposed on the rotating shaft, a second tooth disposed on the inner side of the rotating ring, and a transmission gear; the transmission gear is disposed between the rotating shaft and the rotating ring, and the transmission gear meshes with the first tooth and the second tooth for transmission; thus enabling the scraper to move in the opposite direction for scraping when the rotating shaft rotates.

[0015] The rotary dryer disclosed in this utility model, through the setting of a scraping mechanism, scrapes the inner wall of the drying cylinder during the stirring operation of the stirring mechanism. This scrapes off the material that adheres to the inner wall of the drying cylinder during the stirring process, preventing the material from sticking to the inner wall of the drying cylinder for a long time and causing scorching, which would affect the quality of the product. Moreover, the scraping direction is opposite to the stirring direction, which can deflect the movement direction of the material during stirring. By moving the material in two directions through the stirring blades and scrapers respectively, the material can be dispersed, preventing the material from always sticking to the inner wall of the drying cylinder and forming accumulation, thereby improving the drying effect and drying uniformity.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0019] Figure 2 This is a perspective view of one embodiment of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of the driving component in one embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the scraper installation in one embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Support frame; 2. Drying drum; 3. Drive motor; 4. Rotating shaft; 5. Stirring blade; 6. Scraper; 7. Rotating ring; 8. First meshing tooth; 9. Second meshing tooth; 10. Transmission gear. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. "Fixed" or "fixed connection" generally refers to common mechanical connection methods, such as threaded connections, welding, or bonding.

[0028] In existing technologies, when drying theanine, some fragments adhere to the inner wall of the dryer, producing charred material. The charred material mixed with the material affects the quality of theanine. Furthermore, the current method of mixing the material evenly during drying is not ideal, which easily leads to the material clumping together and being difficult to disperse, thus affecting the drying effect.

[0029] This utility model provides a rotary dryer, such as Figure 1 and Figure 2 As shown, in this embodiment, the dryer includes a support frame 1 and a drying cylinder 2. The drying cylinder 2 is horizontal and fixed to the support frame 1. The top of the drying cylinder 2 has a feed inlet for feeding the theanine raw material, and the bottom has a discharge outlet for discharging the dried material. A heating mechanism is also provided, which can deliver hot air into the drying cylinder 2 to dry the material. The bottom of the drying cylinder 2 has an air inlet, and the top has an exhaust outlet. Hot air enters from the air inlet at the bottom, and at the same time as the air is introduced, it can blow the material accumulated at the bottom of the drying cylinder 2 upward.

[0030] To ensure the uniformity of theanine material drying within the drying cylinder 2, a stirring mechanism is installed inside the drying cylinder 2. The stirring mechanism includes a drive motor 3, a rotating shaft 4, and a stirring blade 5. The drive motor 3 is mounted on a support frame 1, and the rotating shaft 4 is rotatably mounted inside the drying cylinder 2 via bearings. One end of the rotating shaft 4 extends out of the drying cylinder 2. Both the output shaft of the drive motor 3 and the rotating shaft 4 are equipped with pulleys, which are connected by a transmission belt to control the rotation of the rotating shaft 4. The stirring blade 5 is fixed on the rotating shaft 4 and rotates with the rotating shaft 4 to perform stirring work, stirring the material entering the drying cylinder 2.

[0031] In addition, in this embodiment, valve bodies are provided in both the inlet and outlet for opening and closing the inlet and outlet, with the outlet located at the end furthest from the inlet; when the stirring mechanism drives the stirring blade 5 to rotate, it can push the material in the drying cylinder 2 from the inlet to the outlet; and during drying, the rotating shaft 4 is repeatedly controlled to rotate in both directions, which can control the material to be repeatedly pushed in the drying cylinder 2, and finally pushed to the outlet for discharge.

[0032] Regarding the scraping mechanism, the scraping mechanism can scrape the inner wall of the drying cylinder 2 by rotating in the opposite direction to the stirring blade 5 when the rotating shaft 4 rotates. The scraping mechanism includes a driving component, a rotating ring 7, and a scraper 6. The driving component connects the rotating ring 7 and the rotating shaft 4, so that the rotating ring 7 moves synchronously when the rotating shaft 4 rotates. The outer wall of the rotating ring 7 is slidably connected to the inner wall of the drying cylinder 2. The scraper 6 is connected to the rotating ring 7, so that the scraper 6 moves together with the rotating ring 7. One side of the scraper 6 contacts the inner wall of the drying cylinder 2 and scrapes the inner wall of the drying cylinder 2 during the drying process. A wear-resistant plate is provided at one end of the scraper 6 near the inner wall of the drying cylinder 2. The wear-resistant plate contacts the inner wall of the drying cylinder 2 to avoid wear and tear on the scraper 6 after long-term use, which would require frequent replacement.

[0033] This invention utilizes a scraping mechanism to scrape the inner wall of the drying cylinder 2 during the stirring process. This scrapes away material that adheres to the inner wall of the drying cylinder 2 during stirring, preventing it from sticking to the inner wall for extended periods and causing scorching that could affect product quality. Furthermore, the scraping direction is opposite to the stirring direction, which can deflect the movement of the material during stirring. By using the stirring blade 5 and scraper 6 to move the material in two directions, the material can be dispersed, preventing it from constantly adhering to the inner wall of the drying cylinder 2 and forming accumulations. This improves the drying effect and the uniformity of drying.

[0034] In this embodiment, multiple scrapers 6 are provided, such as... Figure 5 As shown, in this embodiment, four scrapers are used; and the inner side of the scraper 6 is set as an arc surface, which allows the theanine raw material to remain on the scraper 6 and move upward by the scraper 6; multiple scrapers 6 can improve the effect of turning the material.

[0035] Regarding the installation of scraper 6, a rotating shaft is fixed on the side of the rotating ring 7 facing the stirring blade. One end of scraper 6 is mounted on the rotating shaft through a torsion spring. The torsion spring drives scraper 6 to rotate towards the inner wall of the drying cylinder 2, so that scraper 6 can always stick to the inner wall of the drying cylinder 2, ensuring the scraping effect on the inner wall of the drying cylinder 2.

[0036] To form an independent driving chamber, a partition is vertically installed inside the drying cylinder 2, dividing the interior of the drying cylinder 2 into a stirring chamber and a driving chamber; the stirring blade 5 is located inside the stirring chamber, where the drying process takes place; the driving component is located inside the driving chamber, the rotating ring 7 seals the driving chamber, and the scraper 6 is connected to the rotating ring 7 and located inside the stirring chamber; Figure 3 and Figure 4As shown, the driving component includes a transmission gear 10, a first meshing tooth 8 on the rotating shaft 4, and a second meshing tooth 9 on the inner side of the rotating ring 7. The transmission gear 10 is located between the rotating shaft 4 and the rotating ring 7, and both ends of the transmission gear 10 mesh with the first meshing tooth 8 and the second meshing tooth 9 respectively, so that when the rotating shaft 4 rotates, it can drive the scraper 6 to rotate in the opposite direction for scraping. Multiple transmission gears 10 are provided to ensure the stability of the transmission. A driving chamber and a stirring chamber are provided, and the driving component is located in the driving chamber, while the material is dried in the stirring chamber. The driving component realizes the linkage between the driving component and the stirring mechanism. Only one drive motor 3 is needed to realize both stirring and scraping, which is convenient to control.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotary dryer characterized by comprising: It includes a support frame (1) and a drying cylinder (2) disposed on the support frame (1); the drying cylinder (2) has a feed inlet at the top and a discharge outlet at the bottom; The drying cylinder (2) is equipped with a stirring mechanism, which includes a drive motor (3) mounted on a support frame (1), a rotating shaft (4) rotatably mounted inside the drying cylinder (2), and a stirring blade (5) mounted on the rotating shaft (4); the rotating shaft (4) is connected to the drive motor (3) and rotates under the control of the drive motor (3); The drying cylinder (2) is equipped with a scraping mechanism, which can scrape the inner wall of the drying cylinder (2) by rotating in the opposite direction to the stirring blade (5) when the rotating shaft (4) rotates.

2. The rotary dryer according to claim 1, characterized in that The drying cylinder (2) is provided with a partition, which divides the interior of the drying cylinder (2) into a stirring chamber and a driving chamber, and the stirring blade (5) is provided inside the stirring chamber; The scraping mechanism includes a drive component, a rotating ring (7) and a scraper (6). The drive component is located in the drive cavity and is connected to the rotating ring (7) and the rotating shaft (4). The scraper (6) is located in the stirring cavity and is connected to the rotating ring (7). The scraper (6) is in contact with the inner wall of the drying cylinder (2).

3. The rotary dryer according to claim 2, characterized in that The scraper (6) is configured as a plurality of them.

4. The rotary dryer according to claim 2, wherein The rotating ring (7) is provided with a rotating shaft, and a torsion spring is provided on the rotating shaft. One end of the scraper (6) is mounted on the rotating shaft through the torsion spring.

5. The rotary dryer of claim 2, wherein The driving component includes a first tooth (8) disposed on the rotating shaft (4), a second tooth (9) disposed on the inner side of the rotating ring (7), and a transmission gear (10); the transmission gear (10) is disposed between the rotating shaft (4) and the rotating ring (7), and the transmission gear (10) meshes with the first tooth (8) and the second tooth (9) for transmission.

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