Single-layer continuous drying equipment for cabbages

Abstract

The utility model relates to the related technical field of vegetable drying, in particular to single-layer continuous drying equipment for cabbages, which comprises at least one drying cavity device. The drying mesh belt penetrates through the drying cavity device, and the conveying direction of the drying mesh belt is inclined upwards; the heat supply device is arranged at the side end of the drying cavity device and used for conveying hot air into the drying cavity device and enabling the hot air to flow upwards from the bottom of the drying mesh belt; the heat recovery device communicates with the drying cavity device and the heat supply device and is used for discharging wet gas in the drying cavity device and introducing dry air to flow back to the heat supply device, the heat recovery device is used for leading out the wet and hot gas in the drying cavity device and carrying out heat exchange in the heat recovery device, so that part of heat of the wet and hot gas is introduced into the heat supply device, and the heat supply device is used for supplying heat to the drying cavity device. The energy in the waste heat can be captured and recovered through the heat recovery device, the waste heat is recovered and reutilized, the heat recovery device is arranged, the requirement for natural resources can be reduced, energy is saved, the cost is reduced, and greenhouse gas emission is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of vegetable drying, specifically a single-layer continuous drying device for cabbage. Background Technology

[0002] Traditional continuous cabbage drying equipment uses a single-layer continuous drying system where hot air is drawn into the drying chamber by a circulating fan from the hot air furnace. The hot air passes through the material via a drying mesh belt and is directly discharged without heat recovery. This results in excessive heat loss and increases energy and operating costs.

[0003] Traditional continuous cabbage drying equipment uses a single-layer continuous drying chamber with a non-inclined design, which results in an excessively low discharge end and inconvenient material receiving. Since cabbage drying is a continuous process, an elevator needs to be added to the discharge end to increase the discharge height for easier feeding, which increases investment costs.

[0004] Secondly, when heating the drying equipment, it generally includes a heating device and a pipe connecting the heating device and the drying chamber. The heating device transports hot gas through the pipe to the drying chamber to dry the cabbage. The gas used for drying is directly discharged, resulting in the waste of the residual heat of the gas after drying. Utility Model Content

[0005] The purpose of this invention is to provide a single-layer continuous drying device for cabbage to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A single-layer continuous drying device for cabbage includes:

[0008] At least one drying chamber device;

[0009] The drying mesh belt passes through the drying chamber device, and the drying mesh belt is driven to rotate by a drive source;

[0010] A heating device is installed on the side of the drying chamber device to supply hot air into the drying chamber device and to make the hot air flow upward from the bottom of the drying mesh belt.

[0011] A heat recovery device, connected to the drying chamber device and the heating device, is used to discharge the humid gas in the drying chamber device and introduce dry air back to the heating device.

[0012] The single-layer continuous drying equipment for cabbage as described above: the drying chamber device includes:

[0013] The cavity frame is shielded by multiple cavity baffles to form a drying box with the upper end sealed by a heat recovery device. The position on the drying box through which the drying mesh belt passes is open.

[0014] The inside of the drying chamber is divided into a drying chamber and an air supply chamber by a drying mesh belt.

[0015] The single-layer continuous drying equipment for cabbage described above: the drying chamber device further includes a circulating fan connected to the air supply chamber, and the air inlet of the circulating fan is connected to the heating device through an air supply pipe.

[0016] As described above, the single-layer continuous drying equipment for cabbage includes a coarse material crushing component and a fine material crushing component that are rotatably installed inside the drying chamber along the conveying direction of the drying mesh belt. The coarse material crushing component and the fine material crushing component are driven to rotate by a first motor and a second motor respectively installed on the cavity frame.

[0017] The single-layer continuous drying equipment for cabbage described above includes the following heat recovery device:

[0018] An upper sealing body for sealing the top of the drying oven and a recovery box installed on the upper sealing body, wherein the recovery box is connected to the heating device and a heat exchange core is provided inside the recovery box;

[0019] It also includes a dehumidifying fan installed on the recycling bin.

[0020] The single-layer continuous drying equipment for cabbage described above: the feeding end of the drying mesh belt is equipped with a feeding device, the feeding device comprising:

[0021] The first support frame is used to support the rotation of the passive belt roller of the drying mesh belt.

[0022] The feeding mechanism, mounted on the first support frame, includes a feeding shaft and multiple feeding plates mounted on the feeding shaft. The feeding shaft is driven to rotate by a third motor mounted on the first support frame.

[0023] As described above, a single-layer continuous drying device for cabbage includes a cleaning roller rotatably mounted on the first support frame, which is driven to rotate by a fourth motor mounted on the first support frame.

[0024] The first support frame is equipped with a spray pipe, and the spray outlet of the spray pipe faces the drying mesh belt.

[0025] The single-layer continuous drying equipment for cabbage described above: the discharge end of the drying mesh belt is equipped with a discharge device, the discharge device comprising:

[0026] The second support frame is used to support the drying mesh belt and actively drive the drying mesh belt to rotate. The active belt roller is rotatably mounted on the second support frame.

[0027] The guide plate is installed on the second support frame and is located at the discharge end of the drying mesh belt.

[0028] As described above, a single-layer continuous drying device for cabbage is further rotatably mounted on the second support frame, and the circumferential direction of the auger is perpendicular to the output direction of the drying mesh belt.

[0029] The single-layer continuous drying equipment for cabbage described above: the conveying direction of the drying mesh belt is inclined upward or the conveying direction is set horizontally.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] By setting the conveying direction of the drying mesh belt to be inclined upward, the height of the discharge end of the equipment is increased to facilitate material receiving. Secondly, by installing a heat recovery device on each drying chamber, the heat recovery device draws out the hot and humid gas in the drying chamber and exchanges heat within the heat recovery device, allowing some of the heat from the hot and humid gas to be introduced into the heating device. The energy in the waste heat can be captured and recovered through the heat recovery device. By recovering and reusing waste heat, the installation of the heat recovery device can reduce the demand for natural resources, save energy, reduce costs, and reduce greenhouse gas emissions. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a single-layer continuous drying equipment for cabbage.

[0033] Figure 2 This is a front view of a single-layer continuous drying equipment for cabbage.

[0034] Figure 3 This is a side view of a single-layer continuous drying equipment for cabbage.

[0035] Figure 4 This is a top view of a single-layer continuous drying equipment for cabbage.

[0036] Figure 5 This is a schematic diagram of the feeding device in a single-layer continuous drying equipment for cabbage.

[0037] Figure 6 This is a schematic diagram of the drying chamber device in a single-layer continuous drying equipment for cabbage.

[0038] Figure 7 This is a schematic diagram of the heat recovery device in a single-layer continuous drying equipment for cabbage.

[0039] Figure 8This is a schematic diagram of the discharge device in a single-layer continuous drying equipment for cabbage.

[0040] In the diagram: 1 - Gas supply pipeline;

[0041] 2-Drying mesh belt;

[0042] 3-Heat recovery device, 301-Upper sealing body, 302-Recovery box, 303-Exhaust fan, 304-Heat exchange core;

[0043] 4-Drying chamber device, 401-Cavity frame, 402-Cavity baffle, 403-Rough material, 404-Fine material, 405-First motor, 406-Second motor, 407-Circulating fan, 408-Fan bracket;

[0044] 5-Heating equipment;

[0045] 6-Feeding device, 601-Third motor, 602-Spray pipe, 603-Fourth motor, 604-Sweeping roller, 605-First support frame, 606-Passive belt roller, 607-First baffle plate, 608-Pushing mechanism, 6081-Pushing plate, 6082-Pushing shaft, 6083-Vertical adjustment component;

[0046] 7-Discharge device, 701-Second support frame, 702-Chain guide rail, 703-Second baffle plate, 704-Fifth motor, 705-Drive roller, 706-Auger, 707-Guide plate;

[0047] 8-Return gas pipe. Detailed Implementation

[0048] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0049] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0050] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0051] Please see Figures 1-8 In this embodiment of the present invention, a single-layer continuous drying device for cabbage includes:

[0052] At least one drying chamber device 4;

[0053] The drying mesh belt 2 passes through the drying chamber device 4 and is inclined upward or horizontally arranged in the conveying direction. The drying mesh belt 2 is driven to rotate by a drive source.

[0054] Heating device 5 is installed at the side end of drying chamber device 4 and is used to deliver hot air into drying chamber device 4 and make the hot air flow upward from the bottom of drying mesh belt 2.

[0055] The heat recovery device 3 is connected to the drying chamber device 4 and the heating device 5. It is used to discharge the humid gas in the drying chamber device 4 and introduce dry air back to the heating device 5.

[0056] In this embodiment, by setting the conveying direction of the drying mesh belt 2 to be inclined upward, the height of the discharge end of the equipment is increased to facilitate material receiving. Secondly, by setting a heat recovery device 3 on each drying chamber device 4, the heat recovery device 3 draws out the hot and humid gas in the drying chamber device 4 and performs heat exchange in the heat recovery device 3, so that part of the heat of the hot and humid gas is introduced into the heating device 5. The energy in the waste heat can be captured and recovered by the heat recovery device. By recovering and reusing waste heat, the setting of the heat recovery device 3 can reduce the demand for natural resources, save energy, reduce costs, and reduce greenhouse gas emissions. The heat source transported by the heating device 5 includes, but is not limited to, steam.

[0057] It should be noted that when multiple drying chamber devices 4 are installed, adjacent drying chamber devices 4 are kept in a connected state to facilitate the smooth passage of the drying mesh belt 2 and the material placed on the drying mesh belt 2. Secondly, depending on the number of drying chamber devices 4, multiple heating devices 5 can be used to provide heat, ensuring that the heat in each drying chamber device 4 is uniform. Multiple air supply pipes 1 can be installed on the heating device 5, and each air supply pipe 1 is connected to one drying chamber device 4. The heat recovery device 3 is connected to the heating device 5 through the return air pipe 8, thereby forming a complete waste heat recovery and utilization system.

[0058] The return air duct 8 consists of accessories such as a return air elbow duct, a makeup air device, a return air variable diameter duct, a return air straight section duct, a heating variable diameter duct, a heating three-way ventilation duct, and a heating elbow duct. The return air duct and heating air duct, elbow are selected according to the customer's site conditions. The return air duct 8 is equipped with a makeup air inlet and a makeup air valve. The size of the makeup air inlet can be adjusted appropriately according to the actual situation to control the makeup air volume and ensure that the gas entering the heating device 5 is relatively balanced with the gas exiting.

[0059] Please see Figure 6 The drying chamber device 4 includes:

[0060] The cavity frame 401 is shielded by multiple cavity baffles 402 to form a drying box with the upper end sealed by the heat recovery device 3. The position on the drying box through which the drying mesh belt 2 passes is open. The inside of the drying box is divided into a drying chamber and an air supply chamber by the drying mesh belt 2.

[0061] The drying chamber device 4 also includes a circulating fan 407 connected to the air supply chamber, and the air inlet of the circulating fan 407 is connected to the heating device 5 through the air supply pipe 1.

[0062] It should be noted that the drying mesh belt 2, which separates the drying chamber and the air supply chamber, serves as its conveying surface. When the circulating fan 407 is working, it conveys the hot airflow from the heating device 5 to the air supply chamber. The hot airflow moves upward through the air supply chamber, thereby passing through the mesh holes on the drying mesh belt 2 and contacting the material, thus achieving the drying process.

[0063] Furthermore, a coarse material processing component 403 and a fine material processing component 404 are rotatably installed inside the drying chamber along the conveying direction of the drying mesh belt 2. The coarse material processing component 403 and the fine material processing component 404 are driven to rotate by a first motor 405 and a second motor 406 respectively installed on the cavity frame 401.

[0064] The first motor 405 drives the coarse material feeder 403 to initially disperse the material on the drying mesh belt 2. Then, when the material moves with the drying mesh belt 2 to the fine material feeder 404, the second motor 406 drives the fine material feeder 404 to rotate, thereby dispersing the material a second time. The coarse material feeder 403 and the fine material feeder 404 move the material on the drying mesh belt 2, making the material dry evenly.

[0065] Please see Figure 7 The heat recovery device 3 includes: an upper sealing body 301 for sealing the upper end of the drying chamber and a recovery box 302 installed on the upper sealing body 301. The recovery box 302 is connected to the heating device 5, and a heat exchange core 304 is provided inside the recovery box 302. It also includes an exhaust fan 303 installed on the recovery box 302. When the exhaust fan 303 is activated, it introduces the humid hot gas in the drying chamber into the recovery box 302 to preheat the dry gas entering the heat exchange core 304. The preheated gas enters the heating device 5, thereby improving the thermal energy utilization rate of the entire drying system. In addition, through the design of the heat recovery device 3, not only is energy waste effectively reduced, but the temperature of the exhaust gas is also reduced, reducing the impact on the environment and achieving the goal of green drying.

[0066] The heat exchange core 304 can be a heat exchange tube or other heat exchangers, as long as the heat exchange requirements are met. This embodiment does not make any specific limitations on this.

[0067] Please see Figure 5 The feeding end of the drying mesh belt 2 is provided with a feeding device 6, which includes:

[0068] The first support frame 605 is used to support the passive belt roller 606 of the drying mesh belt 2, which is rotatably mounted on the first support frame 605.

[0069] The feeding mechanism 608 is mounted on the first support frame 605 and includes a feeding shaft 6082 and a plurality of feeding plates 6081 mounted on the feeding shaft 6082. The feeding shaft 6082 is driven to rotate by a third motor 601 mounted on the first support frame 605.

[0070] When the third motor 601 is working, it drives the feeding shaft 6082 to rotate. When the feeding shaft 6082 rotates, it drives multiple feeding plates 6081 to rotate, thereby pushing the material placed on the drying mesh belt 2 forward and making the material evenly distributed on the drying mesh belt 2, which facilitates subsequent drying processing.

[0071] Preferably, in order to accommodate materials of different thicknesses laid on the drying mesh belt 2, the feeding shaft 6082 is rotatably mounted on the vertical adjustment component 6083, thereby realizing the adjustment of the distance between the feeding shaft 6082 and the drying mesh belt 2. The specific vertical adjustment component 6083 can be an existing roller adjustment component, including but not limited to sliders and lead screws.

[0072] Furthermore, a cleaning roller 604 is rotatably mounted on the first support frame 605, and the cleaning roller 604 is driven to rotate by a fourth motor 603 mounted on the first support frame 605.

[0073] A spray pipe 602 is installed on the first support frame 605, and the spray outlet of the spray pipe 602 faces the drying mesh belt 2.

[0074] In this embodiment, the spray pipe 602 is connected to a water pumping device, which pumps water into the spray pipe 602. The water is sprayed onto the drying mesh belt 2 through the spray outlet, thereby washing the adhesive on the drying mesh belt 2. Subsequently, when the drying mesh belt 2 passes through the cleaning roller 604, it is brushed by the cleaning roller 604 to achieve secondary cleaning and remove the adhesive on the drying mesh belt 2.

[0075] Further, please refer to Figure 8 The discharge end of the drying mesh belt 2 is provided with a discharge device 7, which includes:

[0076] The second support frame 701, and the active belt roller 705, which supports the drying mesh belt 2 and actively drives the drying mesh belt 2 to rotate, are rotatably mounted on the second support frame 701;

[0077] The guide plate 707 is installed on the second support frame 701 and is located at the discharge end of the drying mesh belt 2;

[0078] The second support frame 701 is also rotatably mounted with an auger 706, the circumferential direction of which is perpendicular to the output direction of the drying mesh belt 2.

[0079] It also includes a fifth motor 704 installed on the second support frame 701. The movable end of the fifth motor 704 is connected to the auger 706 and the active belt roller 705 through a transmission component. The active belt roller 705 and the passive belt roller 606 work together with the fifth motor 704 to form a drive source. When the active belt roller 705 rotates, it works with the passive belt roller 606 to realize the continuous rotation of the drying mesh belt 2. At the same time, when the auger 706 rotates, it pushes the dried material on the drying mesh belt 2 onto the guide plate 707. Then the material falls into the collection device along the guide plate 707.

[0080] It should be noted that both the active belt roller 705 and the passive belt roller 606 are equipped with sprockets, and chains are fixed on both sides or one side of the drying mesh belt 2 to prevent slippage between the drying mesh belt 2 and the active belt roller 705 and the passive belt roller 606.

[0081] The second support frame 701 is also equipped with a chain guide rail 702, which is used to guide the rotation of the drying mesh belt 2.

[0082] 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.

[0083] 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 single-layer continuous drying device for cabbage, characterized in that, include: At least one drying chamber device (4); The drying mesh belt (2) passes through the drying chamber device (4), and the drying mesh belt (2) is driven to rotate by a drive source; A heating device (5) is installed at the side of the drying chamber device (4) to deliver hot air into the drying chamber device (4) and to make the hot air flow upward from the bottom of the drying mesh belt (2). The heat recovery device (3) is connected to the drying chamber device (4) and the heating device (5) to discharge the humid gas in the drying chamber device (4) and introduce dry air back to the heating device (5).

2. The single-layer continuous drying equipment for cabbage according to claim 1, characterized in that, The drying chamber device (4) includes: The cavity frame (401) is shielded by multiple cavity baffles (402) to form a drying box with the upper end sealed by a heat recovery device (3). The position on the drying box through which the drying mesh belt (2) passes is open. The inside of the drying box is divided into a drying chamber and an air supply chamber by a drying mesh belt (2).

3. The single-layer continuous drying equipment for cabbage according to claim 2, characterized in that, The drying chamber device (4) also includes a circulating fan (407) connected to the air supply chamber, and the air inlet of the circulating fan (407) is connected to the heating device (5) through the air supply pipe (1).

4. A single-layer continuous drying device for cabbage according to claim 2, characterized in that, Inside the drying chamber, a coarse material forming component (403) and a fine material forming component (404) are rotatably installed along the conveying direction of the drying mesh belt (2). The coarse material forming component (403) and the fine material forming component (404) are driven to rotate by a first motor (405) and a second motor (406) respectively installed on the cavity frame (401).

5. A single-layer continuous drying device for cabbage according to claim 2, characterized in that, The heat recovery device (3) includes: An upper sealing body (301) for sealing the upper end of the drying box and a recovery box (302) installed on the upper sealing body (301), wherein the recovery box (302) is connected to the heating device (5), and a heat exchange core (304) is provided inside the recovery box (302); It also includes a dehumidifying fan (303) installed on the recycling bin (302).

6. A single-layer continuous drying device for cabbage according to claim 1, characterized in that, The feeding end of the drying mesh belt (2) is provided with a feeding device (6), which includes: The first support frame (605) is used to support the passive belt roller (606) of the drying mesh belt (2), which is rotatably mounted on the first support frame (605); The feeding mechanism (608) is mounted on the first support frame (605) and includes a feeding shaft (6082) and a plurality of feeding plates (6081) mounted on the feeding shaft (6082). The feeding shaft (6082) is driven to rotate by a third motor (601) mounted on the first support frame (605).

7. A single-layer continuous drying device for cabbage according to claim 6, characterized in that, A cleaning roller (604) is rotatably mounted on the first support frame (605), and the cleaning roller (604) is driven to rotate by a fourth motor (603) mounted on the first support frame (605); A spray pipe (602) is installed on the first support frame (605), and the spray outlet of the spray pipe (602) faces the drying mesh belt (2).

8. A single-layer continuous drying device for cabbage according to claim 1, characterized in that, The discharge end of the drying mesh belt (2) is provided with a discharge device (7), which includes: The second support frame (701) is rotatably mounted on the second support frame (701) for supporting the drying mesh belt (2) and actively driving the drying mesh belt (2) to rotate. The guide plate (707) is installed on the second support frame (701) and is located at the discharge end of the drying mesh belt (2).

9. A single-layer continuous drying device for cabbage according to claim 8, characterized in that, A screw conveyor (706) is also rotatably mounted on the second support frame (701), and the circumferential direction of the screw conveyor (706) is perpendicular to the output direction of the drying mesh belt (2).

10. A single-layer continuous drying device for cabbage according to claim 1, characterized in that, The conveying direction of the drying mesh belt (2) is inclined upward or horizontal.

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