A drying device for food processing

Abstract

This utility model relates to the field of food processing drying technology, specifically to a drying device for food processing. It includes a worktable, a support frame, a protective cylinder, a drying cylinder, a servo motor, a stirring rack, a connecting rod, a first gear, and a pulley assembly. Support frames are installed on the left and right sides of the top of the worktable, and the protective cylinder is rotatably connected to the top of the two supports. The drying cylinder is installed inside the protective cylinder. A servo motor is fixedly connected to the left side of the top of the worktable, and the output shaft of the servo motor extends into the drying cylinder and is connected to the stirring rack. A connecting rod is rotatably connected to the left side of the top of the worktable, and a pulley assembly connects the output shaft of the servo motor to the connecting rod. The first gear is fixedly connected to the right end of the connecting rod. This utility model drives the drying cylinder to rotate via the servo motor and the pulley assembly, simultaneously causing the internal stirring rack to rotate independently. Combined with the stirring spatula, this continuously agitates and disperses the tea leaves, preventing clumping and improving drying uniformity.

Description

Technical Field

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

[0002] Drying equipment for food processing is a key piece of equipment in the agricultural product processing process. It is widely used in the dehydration and drying of materials such as tea, fruits and vegetables, and medicinal materials. Its function is to effectively remove moisture from materials, inhibit microbial activity, and extend shelf life by controlling temperature, humidity, and airflow environment, while preserving or enhancing the color, aroma, and nutritional components of the product. Among many application scenarios, tea is an agricultural product with extremely delicate requirements for drying process. Its processing process places higher demands on the performance of drying equipment. In the drying stage after withering, tea not only needs to be dehydrated evenly to prevent scorching, yellowing, or loss of aroma, but also needs to avoid leaf breakage and quality deterioration. Therefore, traditional general-purpose drying equipment often cannot meet its specific process requirements.

[0003] However, most existing tea drying equipment uses fixed tray hot air drying or a single rotating drum structure, which generally suffers from problems such as poor hot air penetration, unstable support when the drum rotates, and obvious vibration during operation. This results in uneven heating of the tea leaves, which can easily lead to local overheating or clumping. Although some equipment has a stirring function, the stirring components are mostly fixed structures or rotate synchronously with the drum, making it impossible to achieve independent turning and effectively disperse the tea leaves, thus affecting the drying efficiency.

[0004] Therefore, it is necessary to design a drying device for food processing to solve the above-mentioned technical problems. Summary of the Invention

[0005] In order to overcome the shortcomings of existing tea drying equipment, which are mostly tray-type or single-cylinder type, with poor hot air penetration, unstable operation and easy vibration, resulting in uneven heating, overheating or clumping; although some have stirring, they cannot be turned independently, resulting in poor dispersion and affecting drying efficiency, this utility model provides a drying device for food processing.

[0006] The technical implementation scheme of this utility model is as follows: A drying device for food processing includes a workbench, a support, a protective cylinder, a drying cylinder, a servo motor, a stirring rack, a connecting rod, a first gear, a second gear, a pulley set, and a cylinder cover. Supports are installed on the left and right sides of the top of the workbench, and the protective cylinder is rotatably connected to the top of the two supports. The drying cylinder is installed inside the protective cylinder. A servo motor is fixedly connected to the left side of the top of the workbench. The output shaft of the servo motor extends into the drying cylinder and is connected to the stirring rack. A connecting rod is rotatably connected to the left side of the top of the workbench. A pulley set is connected between the output shaft of the servo motor and the connecting rod. The first gear is fixedly connected to the right end of the connecting rod. The second gear is fixedly connected to the outer wall of the left side of the drying cylinder. The first gear and the second gear mesh. Multiple connecting holes are evenly opened along the circumferential direction on the outer wall of the right side of the drying cylinder. A cylinder cover is installed on the right side of the drying cylinder.

[0007] More preferably, both the drying drum and the stirring rack are made of stainless steel.

[0008] More preferably, it also includes heating tubes, with multiple heating tubes evenly arranged along the circumference of the outer wall of the drying cylinder.

[0009] More preferably, it also includes locking screws, with multiple locking screws evenly threaded along the circumferential direction on the outer wall of the cylinder cover, and each locking screw passing through the cylinder cover and threadedly connected to the connection hole on the drying cylinder.

[0010] More preferably, it also includes an air valve, which is installed on the right side of the middle part of the cylinder cover.

[0011] More preferably, it also includes a microporous guide net, and multiple stirring shovels are evenly arranged on the stirring rack, with a microporous guide net on the surface of each stirring shovel.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The present invention drives the drying cylinder to rotate via a servo motor and a pulley assembly, which in turn drives the internal stirring rack to rotate independently. This, in conjunction with the stirring shovel, enables the tea leaves to be continuously turned and dispersed, thereby preventing clumping and improving the uniformity of drying. This solves the problems of unstable operation and easy material displacement in traditional equipment.

[0013] 2. This utility model uses a microporous guide mesh on the surface of each stirring spatula to guide hot air through the tea leaves, thereby enhancing heat exchange efficiency and shortening drying time. At the same time, it reduces direct contact between the tea leaves and metal parts, thus reducing the breakage rate.

[0014] 3. This utility model achieves uniform heating of the outside of the drying cylinder by evenly arranging multiple heating tubes around the outer wall. The heat enters the interior through conduction and convection, resulting in uniform temperature distribution, avoiding local overheating that could cause tea scorching, and improving the drying quality.

[0015] 4. This utility model achieves a tight seal between the cylinder cover and the drying cylinder by using multiple locking screws for threaded connection. In conjunction with the air valve on the cylinder cover, the internal air pressure and moisture discharge are regulated, thereby controlling the humidity of the drying environment, preventing heat loss, and improving energy utilization efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of the protective cylinder and drying cylinder of this utility model.

[0018] Figure 3 This is a schematic diagram of the covering structure of the connecting rod, the first gear, and the second gear of this utility model.

[0019] Figure 4 This is a cross-sectional view of the protective cylinder of this utility model.

[0020] The meanings of the labels in the attached diagram are as follows: 1. Workbench; 101. Support; 2. Protective cylinder; 3. Drying cylinder; 4. Servo motor; 5. Stirring rack; 6. Connecting rod; 7. First gear; 8. Second gear; 9. Pulley assembly; 10. Cylinder cover; 11. Heating tube; 12. Locking screw; 13. Air valve; 14. Microporous guide net. Detailed Implementation

[0021] Example: A drying apparatus for food processing, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the device includes a workbench 1, a support 101, a protective cylinder 2, a drying cylinder 3, a servo motor 4, a stirring rack 5, a connecting rod 6, a first gear 7, a second gear 8, a pulley set 9, and a cylinder cover 10. Supports 101 are installed on the left and right sides of the top of the workbench 1, and the protective cylinder 2 is rotatably connected to the top of the two supports 101. The drying cylinder 3 is installed inside the protective cylinder 2. The servo motor 4 is bolted to the top left of the workbench 1. The output shaft of the servo motor 4 extends into the drying cylinder 3 and is connected to the stirring rack 5. Both the drying cylinder 3 and the stirring rack 5 are made of stainless steel. The connecting rod 6 is rotatably connected to the top left of the workbench 1. A pulley set 9 is connected between the output shaft of the servo motor 4 and the connecting rod 6. The first gear 7 is welded to the right end of the connecting rod 6. The second gear 8 is welded to the left outer wall of the drying cylinder 3. The first gear 7 meshes with the second gear 8. Multiple connecting holes are evenly opened along the circumference of the right outer wall of the drying cylinder 3. The cylinder cover 10 is installed on the right side of the drying cylinder 3.

[0022] like Figure 1 , Figure 2 and Figure 4As shown, it also includes heating tubes 11, locking screws 12, air valves 13 and microporous guide nets 14. Multiple heating tubes 11 are evenly arranged along the circumference of the outer wall of the drying cylinder 3. Multiple locking screws 12 are evenly threaded along the circumference of the outer wall of the cylinder cover 10. Each locking screw 12 passes through the cylinder cover 10 and is threadedly connected to the connection hole on the drying cylinder 3. An air valve 13 is installed on the right side of the middle part of the cylinder cover 10. Multiple stirring shovels are evenly arranged on the stirring rack 5. Each stirring shovel has a microporous guide net 14 on its surface.

[0023] When this device is needed, first, the tea leaves to be dried are evenly placed inside the drying cylinder 3. Then, the cylinder cover 10 is installed on the right side of the drying cylinder 3. Multiple locking screws 12 are threaded through the connecting holes on the side wall of the drying cylinder 3 to achieve a tight seal of the cylinder cover 10, ensuring that heat and moisture do not leak out during the drying process. The air valve 13 is used to adjust the air pressure and moisture discharge inside the drying cylinder 3 during subsequent operation to maintain a suitable drying environment.

[0024] After the servo motor 4 is started, its output shaft begins to rotate. The power is transmitted to the connecting rod 6 through the pulley group 9, which drives the connecting rod 6 to rotate around its rotation axis. The first gear 7 rotates accordingly and meshes with the second gear 8, thereby driving the drying cylinder 3 to rotate. Since the protective cylinder 2 is rotatably connected to the workbench 1 through the bracket 101 and has a drying cylinder 3 installed coaxially inside it, the rotation of the drying cylinder 3 drives the entire protective cylinder 2 to rotate synchronously, forming a stable rotation support structure, which effectively prevents material deviation and improves the stability of equipment operation.

[0025] Meanwhile, the output shaft of the servo motor 4 directly drives the stirring rack 5 to rotate. Multiple stirring shovels are evenly arranged on the stirring rack 5, and each stirring shovel has a microporous guide net 14 on its surface. This structure can both turn and disperse the tea leaves during the stirring process to prevent them from piling up and clumping, and guide hot air through the micropores to penetrate the tea leaf layer, thereby improving the heat exchange efficiency. The stirring rack 5 and the drying cylinder 3 move in different ways. The drying cylinder 3 rotates as a whole, causing the tea leaves to tumble and move forward, while the stirring rack 5 rotates in the opposite or same direction inside to achieve deep stirring. The two work together to significantly enhance the uniformity of heating and drying efficiency of the material.

[0026] After the heating tube 11 is powered on, it generates heat, which is transferred to the wall of the drying cylinder 3 through heat conduction. Then, the tea leaves inside the cylinder are heated through convection and radiation, so that the tea leaves are continuously heated during the rotation and stirring process, and the moisture gradually evaporates. The generated hot and humid air is discharged in a controlled manner through the air valve 13 under the guidance of the airflow, so as to avoid excessive internal humidity affecting the drying effect. Throughout the process, the main function of the protective cylinder 2 is to keep warm and provide safety protection, preventing heat loss and operators from coming into contact with the high temperature of the drying cylinder 3 and the heating tube 11. It rotates together with the drying cylinder 3 to form a stable rotating body, which enhances the stability of operation. At the same time, the drying cylinder 3 and the stirring rack 5 are both made of stainless steel, which has good high temperature resistance, corrosion resistance and food-grade safety performance, ensuring the cleanliness and hygiene of the tea processing process.

Claims

1. A drying apparatus for food processing, characterized in that: The system includes a workbench (1), a support (101), a protective cylinder (2), a drying cylinder (3), a servo motor (4), a stirring rack (5), a connecting rod (6), a first gear (7), a second gear (8), a pulley assembly (9), and a cylinder cover (10). Supports (101) are installed on the left and right sides of the top of the workbench (1), and the protective cylinder (2) is rotatably connected to the top of the two supports (101). The drying cylinder (3) is installed inside the protective cylinder (2). A servo motor (4) is fixedly connected to the left side of the top of the workbench (1). The output shaft extends into the drying cylinder (3) and is connected to the stirring rack (5). The top left side of the worktable (1) is rotatably connected to the connecting rod (6). The output shaft of the servo motor (4) is connected to the connecting rod (6) by a pulley group (9). The right end of the connecting rod (6) is fixedly connected to the first gear (7). The left outer wall of the drying cylinder (3) is fixedly connected to the second gear (8). The first gear (7) meshes with the second gear (8). The right outer wall of the drying cylinder (3) is evenly provided with multiple connecting holes along the circumferential direction. The right side of the drying cylinder (3) is equipped with a cylinder cover (10).

2. A drying apparatus for food processing according to claim 1, characterized in that: Both the drying drum (3) and the stirring rack (5) are made of stainless steel.

3. A drying apparatus for food processing according to claim 2, characterized in that: It also includes heating tubes (11), and multiple heating tubes (11) are evenly arranged along the circumferential direction on the outer wall of the drying cylinder (3).

4. A drying apparatus for food processing according to claim 3, characterized in that: It also includes locking screws (12), and multiple locking screws (12) are evenly threaded along the circumferential direction on the outer wall of the cylinder cover (10). Each locking screw (12) passes through the cylinder cover (10) and is threadedly connected to the connection hole on the drying cylinder (3).

5. A drying apparatus for food processing according to claim 4, characterized in that: It also includes an air valve (13), which is installed on the right side of the middle part of the cylinder cover (10).

6. A drying apparatus for food processing according to claim 5, characterized in that: It also includes a microporous guide net (14), and multiple stirring shovels are evenly arranged on the stirring rack (5), with a microporous guide net (14) on the surface of each stirring shovel.

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