Combined continuous drying device

Abstract

The utility model provides a combined type continuous drying device which comprises a microwave enzyme killing device, a slope conveying table and a crawler-type drying device which are arranged in sequence, and the microwave enzyme killing device comprises a supporting frame, a microwave box body, a feeding hopper, a microwave discharging port, a moisture discharging port and a material conveying device. The material conveying device is arranged in the microwave box body and located at the bottom position, the material conveying device is composed of a conveying belt and roller shafts, the roller shafts are composed of thick rollers and thin rollers, the thick rollers and the thin rollers are arranged at intervals to form the roller shafts of an integrated structure, and the conveying belt is arranged on the thick rollers and the thin rollers in a sleeving mode; during operation of the roller shafts, the conveying belts on the thick roller and the thin roller can operate at different speeds, and materials can be pulled in the microwave enzyme killing process; and the crawler-type drying device can be used for drying and outputting the materials conveyed by the microwave enzyme killing device. Compared with the prior art, the device can realize continuous production, is high in productivity, and is particularly suitable for drying the abelmoschus manihot flowers which are difficult to store and have high water content.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying devices, and particularly relates to a combined continuous drying device. Background Art

[0002] Hibiscus flowers usually contain a variety of bioactive enzymes. If these enzymes are not inactivated during the drying process, the active ingredients will be enzymolyzed under the action of enzymes and temperature, resulting in a large loss of active ingredients. At present, there are two main types of industrial drying equipment for hibiscus flowers: box type and belt type. Both directly heat and dry the medicinal materials. Box drying equipment uses multi-layer trays to place medicinal materials and dry them under the action of hot air. Belt drying equipment is mainly divided into multi-layer crawler type and tunnel type in terms of appearance. Both use conveyor belts to transport medicinal materials for drying during movement. Although the production capacity of hibiscus flowers dried by box and belt equipment is high, due to the presence of bioactive enzymes in hibiscus flowers, the loss of active ingredients is high after drying, and the color becomes darker and the glossiness becomes worse.

[0003] Microwave drying is an emerging drying method. During drying, microwave energy directly acts on the material molecules and converts into heat energy. Since microwaves have penetrating properties, they heat the material inside and outside at the same time, without the need for heat conduction, so the heating speed is very fast. For materials with a moisture content below 30%, the drying speed can be shortened by hundreds of times. The disadvantage of microwave drying equipment is that the production capacity is small and the material moisture content is required to be low. Since microwave energy can be quickly converted into heat energy to quickly increase the material temperature during the microwave drying process, it can be used to kill the biological enzymes in the hibiscus flowers, so that the active ingredients remain relatively stable during the drying process. At the same time, the dehumidifier in the device is used to take away the moisture of the hibiscus flowers themselves, which plays a role in preliminary drying.

[0004] Therefore, although there are related equipments for microwave drying in the existing technology, there are still certain defects, such as poor drying efficiency for fresh hibiscus flowers with high water content, low drying efficiency, small production capacity, etc. Utility Model Content

[0005] Technical problem: In order to solve the defects of the prior art, the utility model provides a combined continuous drying device.

[0006] Technical solution: To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A combined continuous drying device comprises a microwave enzyme killing device, a slope conveying platform and a crawler drying device which are arranged in sequence. The microwave enzyme killing device comprises a support frame, a microwave box, a feed hopper, a microwave discharge port, a dehumidification port and a material transmission device. The microwave box is a rectangular parallelepiped as a whole and is horizontally installed on the support frame. The feed hopper and the dehumidification port are arranged on the top of the microwave box, and the microwave discharge port is arranged on the side of the microwave box away from the feed hopper. The material transmission device is arranged in the microwave box and is located at the bottom position. It consists of a transmission belt and a roller shaft. The roller shaft consists of a coarse roller and a fine roller, which are arranged at intervals to form a roller shaft of an integrated structure. The transmission belt is respectively sleeved on the coarse roller and the fine roller; the crawler drying device is provided with a drying feed port and a drying discharge port. The bottom position of the microwave discharge port is higher than the bottom position of the drying feed port of the crawler drying device. A slope conveying platform is arranged between the two. The crawler drying device can dry the material conveyed from the microwave discharge port and output it through the drying discharge port.

[0008] In the above device, the microwave enzyme-killing device and the crawler drying device are connected, which can not only improve the production capacity, but also improve the drying effect, making up for the defects of microwave drying. In addition, the microwave enzyme-killing device adopts an integrated roller shaft. Since the roller shaft includes a coarse roller and a fine roller arranged at intervals, the conveyor belts on the coarse roller and the fine roller will run at different speeds during the operation of the roller shaft, which can pull the material during the microwave enzyme-killing process and effectively prevent it from sticking to the conveyor belt.

[0009] As a specific implementation, the microwave enzyme killing device further comprises a motor, which is arranged on a support frame and controls the rotation of the roller.

[0010] As a specific implementation scheme, two rollers are provided, one is provided below the feed hopper, and the other is provided at the microwave discharge port, and the two rollers are symmetrically provided and located on the same horizontal plane.

[0011] As a specific implementation, the microwave enzyme killing device also includes a controller and an observation window, which are arranged on the side wall of the microwave box. The controller controls the overall operation of the microwave enzyme killing device, and the observation window is used to observe the real-time situation of the material in the box.

[0012] As a specific implementation scheme, a horizontally arranged intermediate conveyor belt is provided between the microwave discharge port and the slope conveyor platform, and the horizontal height of the intermediate conveyor belt is the same as or lower than the horizontal height of the transmission belt on the fine roller. The intermediate conveyor belt can not only provide space for adding more materials, thereby increasing production capacity, but also provide buffer time and space for feeding of subsequent drying devices, thereby improving drying effect.

[0013] Furthermore, the upper side spaces of the slope conveyor platform and the intermediate conveyor belt are provided with baffles for preventing materials from falling.

[0014] Furthermore, a small gap is left between the top of the slope conveyor platform and the end of the conveyor belt of the middle conveyor belt, which can prevent the material from leaking to the ground and can also scrape the material off the conveyor belt.

[0015] As a specific implementation scheme, the crawler drying device includes a drying box, a drying feed port, a drying discharge port and a drying conveying device. The drying feed port and the drying discharge port are respectively arranged at the two ends of the drying box. The bottom position of the microwave discharge port is higher than the bottom position of the drying feed port, and an inclined conveying platform is arranged between the two. The drying conveying device is arranged in the drying box and is located at the bottom position, connecting the drying feed port and the drying discharge port.

[0016] Beneficial effects: Compared with the prior art, the combined continuous drying device of the utility model uses microwaves to first kill the biological enzymes in the material, and then transports it to a crawler oven for drying after pre-drying, thereby increasing the transfer rate of active ingredients and the drying speed; the conveyor belts with different operating speeds in the microwave enzyme-killing device are arranged alternately, and the material is pulled during the microwave enzyme-killing process, effectively preventing it from sticking to the conveyor belt. In addition, an intermediate conveyor belt and a sloped conveyor platform are provided at the output end, which can effectively peel off the material and enter the crawler drying device while increasing the production capacity. This combined device can realize continuous production with high production capacity, and is particularly suitable for drying hibiscus flowers with high water content that are not easy to preserve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the combined continuous drying device of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the microwave enzyme killing device in the combined continuous drying device of the utility model (a vertical section along the material transmission direction).

[0019] Figure 3 It is a structural diagram of the material transmission device of the microwave enzyme killing device in the combined continuous drying device of the utility model (a vertical section perpendicular to the material transmission direction).

[0020] Figure 4 It is a schematic diagram of the internal structure of the crawler-type drying device in the combined continuous drying device of the utility model (a vertical section along the material transmission direction). DETAILED DESCRIPTION

[0021] The utility model device is further described below in conjunction with the accompanying drawings.

[0022] In the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent.

[0023] Example 1

[0024] A combined continuous drying device, such as Figure 1 and Figure 2 As shown, it includes a microwave enzyme killing device 1, an intermediate conveyor belt 4, a slope conveying platform 3, a crawler type drying device 2, and a baffle 5 which are arranged in sequence.

[0025] The microwave enzyme killing device 1 includes a support frame 101, a microwave box 102, a feed hopper 103, a microwave discharge port 104, a dehumidification port 105, a material transmission device 106, a motor 107, a controller 108 and an observation window 109. The microwave box 102 is a rectangular parallelepiped as a whole and is horizontally installed on the support frame 101. The feed hopper 103 and the dehumidification port 105 are arranged on the top of the microwave box 102, and the microwave discharge port 104 is arranged on the side of the microwave box 102 away from the feed hopper 103. The material transmission device 106 is arranged in the microwave box 102 and is located at the bottom position. It is composed of a transmission belt 1061 and a roller 1062. The roller 1062 is composed of a coarse roller 10621 and a fine roller 10622. The two are arranged at intervals to form an integrated structure of the roller 1062, and the transmission belt 1061 is respectively sleeved on the coarse roller 10621 and the fine roller 10622 (such as Figure 3 As shown); the motor 107 is arranged on the support frame 101, which controls the rotation of the roller 1062; two rollers 1062 are arranged, one is arranged below the feed hopper 103, and the other is arranged at the microwave outlet 104, and the two are symmetrically arranged and located on the same horizontal plane (in this embodiment, as shown in FIG. Figure 3 As shown, four coarse rollers 10621 can be provided, and three fine rollers 10622 can be provided. The number of the coarse rollers 10621 can be provided, and the number of the ...

[0026] like Figure 1 and Figure 4As shown, the crawler drying device 2 includes a drying box 201, a drying feed port 202, a drying discharge port 203 and a drying conveyor 204. The drying feed port 202 and the drying discharge port 203 are respectively arranged at two ends of the drying box 201. The drying conveyor 204 is arranged in the drying box 201 and at the bottom position, and it connects the drying feed port 202 and the drying discharge port 203. A dryer is arranged at the top of the drying box 201.

[0027] The bottom position of the microwave discharge port 104 is higher than the bottom position of the drying feed port 202, and the two are connected by the slope conveyor platform 3. A horizontally arranged intermediate conveyor belt 4 is installed between the microwave discharge port 104 and the slope conveyor platform 3; a baffle 5 for preventing materials from falling is provided in the upper space of the side of the slope conveyor platform 3 and the intermediate conveyor belt 4, and a small gap is left between the top of the slope conveyor platform 3 and the conveyor belt end of the intermediate conveyor belt 4, which can prevent materials from leaking to the ground, and the top of the slope conveyor platform 3 can scrape the sticking materials from the intermediate conveyor belt 4 to prevent adhesion. In addition, the horizontal height of the intermediate conveyor belt 4 is the same as the horizontal height of the transmission belt on the fine roller 10622, and a horizontally arranged baffle is provided between the intermediate conveyor belt 4 and the transmission belt 1061, which can prevent materials from leaking to the ground and scrape the sticking materials from the transmission belt 1061. The intermediate conveyor belt 4 can be powered by the motor 107 at the same time. The intermediate conveyor belt 4 can not only provide space for adding more materials, thereby increasing production capacity, but also provide buffer time and space for the feeding of subsequent drying devices, thereby improving the drying effect.

[0028] When using the above device to dry hibiscus flowers, first, hibiscus flowers are added into the microwave box 102 through the feed hopper 103, and the hibiscus flowers fall on the transmission belt 1061 and are transmitted forward, and microwave enzyme killing is performed at the same time. The microwave generator and the start and stop of the motor 107 are controlled by the operation controller 108, and the real-time situation of the hibiscus flowers in the box is observed through the observation window 109. Due to the different running speeds of the transmission belts on the coarse roller 10621 and the fine roller 10622, the hibiscus flowers will be pulled during the transmission process, effectively preventing them from sticking to the conveyor belt (although the transmission belts on the coarse roller 10621 and the fine roller 10622 have different horizontal heights, due to the relatively large volume of the hibiscus flowers, in the width direction, they will cover several different belts, and the hibiscus flowers have a high water content, which will be relatively soft and easy to deform, and it is easy to contact with the belt surfaces of different heights at the same time. At the same time, due to the high water content, there will be a certain viscosity, so a pulling force can be generated). The hibiscus flowers after microwave enzyme sterilization are transported to the intermediate conveyor belt 4 through the microwave discharge port 104, and then transported to the slope conveyor platform 3 via the intermediate conveyor belt 4 (a hydrophobic film can be provided on the surface of the slope conveyor platform 3 to prevent the hibiscus flowers with high water content from sticking). The hibiscus flowers freely fall into the drying box 201 through the drying feed port 202, and then are transported forward through the drying conveyor device 204 while being dried, and finally the dried hibiscus flowers are output through the drying discharge port 203.

[0029] Although the utility model has been described in detail above with general descriptions and specific implementation schemes, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A combined continuous drying device, characterized in that: The invention comprises a microwave enzyme killing device (1), a slope conveying platform (3) and a crawler drying device (2) which are arranged in sequence. The microwave enzyme killing device (1) comprises a support frame (101), a microwave box (102), a feed hopper (103), a microwave discharge port (104), a moisture removal port (105) and a material transmission device (106). The microwave box (102) is a rectangular parallelepiped as a whole and is horizontally mounted on the support frame (101). The feed hopper (103) and the moisture removal port (105) are arranged on the top of the microwave box (102). The microwave discharge port (104) is arranged on a side of the microwave box (102) away from the feed hopper (103). The material transmission device (106) is arranged in the microwave box (102) and is located at the bottom. The crawler drying device (2) is provided with a drying inlet and a drying outlet, the bottom position of the microwave outlet (104) is higher than the bottom position of the drying inlet of the crawler drying device (2), and a slope conveying platform (3) is provided between the two. The crawler drying device (2) can dry the material conveyed by the microwave outlet (104) and output it through the drying outlet.

2. The combined continuous drying device according to claim 1, characterized in that: The microwave enzyme killing device (1) further comprises a motor (107), wherein the motor (107) is arranged on the support frame (101) and controls the rotation of the roller (1062).

3. The combined continuous drying device according to claim 1, characterized in that: Two rollers (1062) are provided, one is provided below the feed hopper (103), and the other is provided at the microwave outlet (104), and the two rollers (1062) are symmetrically arranged and located on the same horizontal plane.

4. The combined continuous drying device according to claim 1, characterized in that: The microwave enzyme killing device (1) further comprises a controller (108) and an observation window (109), wherein the controller (108) and the observation window (109) are arranged on the side wall of the microwave box (102); the controller (108) controls the overall operation of the microwave enzyme killing device (1), and the observation window (109) is used to observe the real-time status of the material in the box.

5. The combined continuous drying device according to claim 1, characterized in that: A horizontally arranged intermediate conveyor belt (4) is provided between the microwave discharge port (104) and the inclined conveyor platform (3), and the horizontal height of the intermediate conveyor belt (4) is the same as the horizontal height of the transmission belt on the fine roller (10622), or is lower than the horizontal height of the transmission belt on the fine roller (10622).

6. The combined continuous drying device according to claim 1, characterized in that: The upper side spaces of the slope conveying platform (3) and the intermediate conveyor belt (4) are provided with baffles (5) for preventing materials from falling.

7. The combined continuous drying device according to claim 1, characterized in that: A small gap is left between the top of the inclined conveying platform (3) and the conveyor belt end of the intermediate conveyor belt (4).

8. The combined continuous drying device according to claim 1, characterized in that: The crawler-type drying device (2) comprises a drying box (201), a drying feed inlet (202), a drying discharge port (203) and a drying conveyor (204); the drying feed inlet (202) and the drying discharge port (203) are respectively arranged at two ends of the drying box (201); the bottom position of the microwave discharge port (104) is higher than the bottom position of the drying feed inlet (202); and a slope conveyor platform (3) is arranged between the two; the drying conveyor (204) is arranged in the drying box (201) and at the bottom position, connecting the drying feed inlet (202) and the drying discharge port (203).

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