A rotary low temperature drying apparatus

Abstract

The utility model discloses a rotary low temperature drying device, including the cabinet body, and the cabinet body is by the frame and the fender splicing and is shaped, the inside of cabinet body is provided with the drying chamber, and the drying chamber is the hollow cylinder structure, and the inside of drying chamber is provided with a plurality of material box, and is used for driving material box to rotate with the driving mechanism of drying chamber axis as center, and the side of drying chamber is provided with the drying mechanism for drying the material in material box, the utility model discloses through starting microwave generator, and the motor drives material box to rotate with the axis of drying chamber as center, makes material box circulate through the below of microwave generator in turn, until material completely dries, wherein the steam in material heats and rises to the upper portion of drying chamber, and is extracted to the outside of drying chamber by the hygroscopic pipe, and the microwave makes the molecule high frequency oscillation friction in material, and the heat is generated, makes material inside and outside heating simultaneously, has guaranteed the uniformity of drying, has improved the efficiency of drying.

Description

Technical Field

[0001] This utility model relates to the field of low-temperature drying, and in particular to a rotary low-temperature drying device. Background Technology

[0002] The low-temperature drying of lotus flowers and leaves is mainly to effectively preserve their active ingredients (such as lotus leaf alkaloids and flavonoids) and natural color, and to avoid nutrient loss or deterioration caused by high temperature, so as to better exert their effects of clearing heat and relieving summer heat, and reducing lipids and losing weight.

[0003] Microwave drying technology is a highly efficient drying method that uses microwaves with a frequency of 300MHz-300GHz to cause high-speed friction and heat generation of polar molecules (such as water molecules) inside the material, thereby rapidly evaporating moisture from the inside out. Microwave drying differs from traditional drying methods in that its heat conduction direction is the same as the moisture diffusion direction. It also has advantages such as high drying rate, high production efficiency, uniform drying, clean production, easy automation control, and improved product quality. Therefore, it is suitable for the drying of lotus flowers and leaves.

[0004] Chinese patent CN119245294A discloses a negative pressure low-temperature drying device. After the material is placed inside a low-pressure cabinet, the cabinet is heated by a heating plate. Finally, the material frame rotates on its own along with the first and second rotating discs, which is conducive to the continuous and uniform heating of the material in the frame and improves the evaporation rate of the moisture in the material.

[0005] The above-mentioned method dries the material by placing it inside a high-temperature, low-pressure space. However, during drying, heat is transferred from the outside to the inside, which can cause the surface of the material to be over-dried while the inside remains uncooked, or the outside to be burnt while the inside remains wet. This results in the problem that it is difficult to ensure the uniformity of drying inside and outside the material and that the drying efficiency is low. To address this issue, a rotary low-temperature drying device is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a rotary low-temperature drying device to solve the problems mentioned in the background art, such as the difficulty in ensuring the uniformity of drying inside and outside the material and the low drying efficiency. The technical solution of this invention provides a solution that is significantly different from the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A rotary low-temperature drying device includes a cabinet, which is formed by splicing a frame and a protective plate. The cabinet has a drying chamber inside, which is a hollow cylindrical structure. The drying chamber contains several material boxes and a drive mechanism for driving the material boxes to rotate around the axis of the drying chamber. The drive mechanism includes a transmission plate and a support rod. The material boxes are located between two transmission plates and are connected to the support rod. A drying mechanism for drying the materials in the material boxes is provided on the side of the drying chamber. The drying mechanism includes a microwave generator. The drive mechanism drives several material boxes to circulate and approach the microwave generator in sequence.

[0008] Preferably, the cabinet has an operation panel and a display panel on its side, as well as an openable door. The door and the frame are rotatably connected by hinges. A transfer cavity is provided between the door and the drying chamber. The two ends of the transfer cavity are connected to the drying chamber and the cabinet, respectively. A base is provided under the drying chamber.

[0009] Preferably, both ends of the drying chamber are provided with sealing plates, and a low-pressure pipe, an air pipe and a moisture-absorbing pipe are provided on the side of the drying chamber. The air pipe is located in the lower part of the drying chamber, and the moisture-absorbing pipe is located in the upper part of the drying chamber.

[0010] Preferably, the low-pressure pipe is used to maintain a low-pressure state inside the drying chamber, the air pipe is used to fill the drying chamber with protective gas, and the moisture absorption pipe is used to guide the moisture inside the drying chamber out.

[0011] Preferably, the drive mechanism includes a motor and a rotating shaft. The motor is fixed to the side of the enclosed plate, one end of the rotating shaft is connected to the motor, and the other end of the rotating shaft passes through two enclosed plates in sequence. The rotating shaft is connected to the enclosed plate through a bearing.

[0012] Preferably, the two ends of the support rod are connected to two transmission plates respectively, the transmission plates are fixedly installed on the rotating shaft, and hooks are provided at both ends of the material box, and the material box and the support rod are connected by the hooks.

[0013] Preferably, a plurality of said microwave generators are installed in the upper part of the drying chamber, and the microwave output end of the microwave generator extends into the interior of the drying chamber.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention involves filling all the material boxes inside the drying chamber with lotus flower and leaf material, then closing the door to create an airtight, sealed space. Gas is then extracted from the drying chamber via a low-pressure pipe, and protective gas is added back in. The microwave generator is then activated, and a motor drives the material boxes to rotate around the axis of the drying chamber. The material boxes circulate sequentially beneath the microwave generator until the material is completely dried. The moisture within the material rises to the top of the drying chamber after heating and is extracted to the outside by the moisture-absorbing pipe. Furthermore, the microwaves cause the molecules inside the material to vibrate at high frequency, generating heat through friction. This simultaneous heating of the material from both inside and out ensures uniform drying and improves drying efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a rotary low-temperature drying device; Figure 2 This is a schematic diagram of the drying chamber in a rotary low-temperature drying device; Figure 3 This is a schematic diagram of the microwave generator in a rotary low-temperature drying device. Figure 4 This is a schematic diagram of the material box in a rotary low-temperature drying device.

[0016] In the diagram: 1. Frame; 101. Operation panel; 102. Display panel; 103. Door; 104. Protective plate; 105. Base; 106. Transfer chamber; 2. Drying chamber; 201. Sealing plate; 202. Low-pressure pipe; 203. Air pipe; 204. Moisture absorption pipe; 3. Microwave generator; 4. Material box; 401. Hook; 5. Transmission plate; 501. Motor; 502. Shaft; 503. Support rod. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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] Please see Figures 1-4 In this utility model, a rotary low-temperature drying device includes a cabinet, which is formed by splicing a frame 1 and a protective plate 104. The inside of the cabinet is a drying chamber 2, which is a hollow cylindrical structure. The drying chamber 2 is provided with several material boxes 4 and a driving mechanism for driving the material boxes 4 to rotate around the axis of the drying chamber 2. The driving mechanism includes a transmission plate 5, a motor 501, a rotating shaft 502 and a support rod 503. The material boxes 4 are located between two transmission plates 5 and are connected to the support rod 503. A microwave generator 3 is provided on the side of the drying chamber 2. Multiple microwave generators 3 are installed on the upper part of the drying chamber 2, and the microwave output end of the microwave generator 3 extends into the interior of the drying chamber 2.

[0021] In this embodiment: Please refer to Figures 1-4 In this embodiment of the utility model, a rotary low-temperature drying device has an operation panel 101 and a display panel 102 on the side of the body, as well as an openable door 103. The door 103 is rotatably connected to the frame 1 via a hinge. A transfer cavity 106 is provided between the door 103 and the drying chamber 2. The two ends of the transfer cavity 106 are respectively connected to the drying chamber 2 and the cabinet. A base 105 is provided below the drying chamber 2.

[0022] Both ends of the drying chamber 2 are equipped with sealing plates 201. The sides of the drying chamber 2 are equipped with a low-pressure pipe 202, an air pipe 203, and a moisture-absorbing pipe 204. The air pipe 203 is located at the lower part of the drying chamber 2, and the moisture-absorbing pipe 204 is located at the upper part of the drying chamber 2. One end of the low-pressure pipe 202 is connected to a vacuum pump, which guides the air inside the drying chamber 2 to be discharged along the low-pressure pipe 202. One end of the air pipe 203 is connected to a fan, which delivers protective gas, which is nitrogen, into the drying chamber 2 along the air pipe 203. One end of the moisture-absorbing pipe 204 is connected to an air pump, which guides the water vapor inside the drying chamber 2 to be discharged along the moisture-absorbing pipe 204.

[0023] The motor 501 is fixed to the side of the closed plate 201. One end of the rotating shaft 502 is connected to the motor 501, and the other end of the rotating shaft 502 passes through the two closed plates 201 in sequence. The rotating shaft 502 and the closed plate 201 are connected by bearings. The two ends of the support rod 503 are respectively connected to the two transmission plates 5. The transmission plates 5 are fixedly installed on the rotating shaft 502. Both ends of the material box 4 are provided with hooks 401. The material box 4 and the support rod 503 are connected by hooks 401. After the motor 501 starts, it drives the two transmission plates 5 to rotate simultaneously through the rotating shaft 502, thereby driving multiple material boxes 4 to rotate around the axis of the drying chamber 2.

[0024] After personnel open the door 103, the material box 4 filled with lotus flower and leaf material (hereinafter referred to as material) is connected to the support rod 503 via the hook 401. When all the support rods 503 are connected to the material box 4, the door 103 is closed. At this time, the drying chamber 2 forms an airtight closed space. Then, the low-pressure pipe 202 first extracts the gas in the drying chamber 2, and the gas pipe 203 fills the drying chamber 2 with nitrogen. Then, the microwave generator 3 is started, and at the same time, the motor 501 drives the material box 4 to rotate, so that the material box 4 passes through the bottom of the microwave generator 3 in sequence until the material is completely dried. The water vapor in the material rises to the upper part of the drying chamber 2 after being heated, and is extracted to the outside of the drying chamber 2 by the moisture absorption pipe 204. The microwave causes the molecules inside the material to oscillate at high frequency and generate heat through friction, so that the material is heated inside and out at the same time, ensuring the uniformity of drying and improving the drying efficiency.

[0025] After the material drying is completed, the microwave generator 3 is turned off. Then, the remaining nitrogen in the drying chamber 2 is extracted and stored through the air pipe 203. Then, air is supplied into the drying chamber 2 through the low-pressure pipe 202 to make the pressure inside and outside the drying chamber 2 the same. Finally, the door 103 is opened to take out the material box 4 containing the dried material.

[0026] The working principle of this utility model is as follows: After the material box 4 filled with material is placed into the drying chamber 2, a low-pressure environment is formed inside the drying chamber 2, which can lower the boiling point of water, allowing the material to be dehydrated quickly at a lower temperature. Then, nitrogen gas is filled into the drying chamber 2, which can effectively reduce the risk of oxidation reaction of the material during the drying process. Then, the microwave generator 3 is started, and the motor 501 drives the material box 4 to rotate, so that the material box 4 passes through the bottom of the microwave generator 3 in sequence until the material is completely dried. The water vapor in the material is heated and rises to the upper part of the drying chamber 2, and is extracted to the outside of the drying chamber 2 by the moisture absorption tube 204. The microwave causes the molecules inside the material to oscillate at high frequency and generate heat through friction, so that the material is heated inside and out at the same time, ensuring the uniformity of drying and improving the drying efficiency.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotary low-temperature drying device, comprising a cabinet, the cabinet being formed by splicing a frame (1) and a protective plate (104), characterized in that: The cabinet is equipped with a drying chamber (2), which is a hollow cylindrical structure. The drying chamber (2) is equipped with several material boxes (4) and a drive mechanism for driving the material boxes (4) to rotate around the axis of the drying chamber (2). The drive mechanism includes a transmission plate (5) and a support rod (503). The material box (4) is located between the two transmission plates (5) and is connected to the support rod (503). The side of the drying chamber (2) is equipped with a drying mechanism for drying the material in the material box (4). The drying mechanism includes a microwave generator (3). The drive mechanism drives several material boxes (4) to circulate and approach the microwave generator (3) in sequence.

2. The rotary low-temperature drying apparatus according to claim 1, characterized in that: The cabinet is provided with an operation panel (101) and a display panel (102) on the side, as well as an openable door (103). The door (103) is connected to the frame (1) by a hinge. A transfer cavity (106) is provided between the door (103) and the drying chamber (2). The two ends of the transfer cavity (106) are connected to the drying chamber (2) and the cabinet respectively. A base (105) is provided under the drying chamber (2).

3. The rotary low-temperature drying apparatus according to claim 1, characterized in that: Both ends of the drying chamber (2) are provided with sealing plates (201). The sides of the drying chamber (2) are provided with a low-pressure pipe (202), an air pipe (203) and a moisture-absorbing pipe (204). The air pipe (203) is located at the lower part of the drying chamber (2), and the moisture-absorbing pipe (204) is located at the upper part of the drying chamber (2).

4. The rotary low-temperature drying apparatus according to claim 3, characterized in that: The low-pressure pipe (202) is used to maintain the low-pressure state inside the drying chamber (2), the air pipe (203) is used to fill the drying chamber (2) with protective gas, and the moisture absorption pipe (204) is used to guide the water vapor inside the drying chamber (2) to be discharged.

5. A rotary low-temperature drying apparatus according to claim 1, characterized in that: The drive mechanism includes a motor (501) and a rotating shaft (502). The motor (501) is fixed to the side of the closed plate (201). One end of the rotating shaft (502) is connected to the motor (501), and the other end of the rotating shaft (502) passes through the two closed plates (201) in sequence. The rotating shaft (502) is connected to the closed plate (201) through a bearing.

6. The rotary low-temperature drying apparatus according to claim 1, characterized in that: The two ends of the support rod (503) are respectively connected to two transmission plates (5), and the transmission plates (5) are fixedly installed on the rotating shaft (502). Both ends of the material box (4) are provided with hooks (401), and the material box (4) and the support rod (503) are connected through the hooks (401).

7. The rotary low-temperature drying apparatus according to claim 1, characterized in that: Multiple microwave generators (3) are installed on the upper part of the drying chamber (2), and the microwave output end of the microwave generators (3) extends into the interior of the drying chamber (2).

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