Food drying device
Through the vertical chain transmission mechanism and the tray design with staggered chain arrangements, combined with the inclined heating unit and partition structure, the problems of large footprint and low thermal energy utilization of tunnel baking machines are solved, and an efficient drying effect of the compact food drying device is achieved.
Patent Information
- Application Number
- CN202422843452.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Tunnel baking machines occupy a large area and have low thermal energy utilization, which makes it difficult to meet the needs of compact food drying equipment.
The vertical chain transmission mechanism and the tray design with staggered chain arrangement are adopted, combined with the inclined heating unit and partition structure to form an S-shaped air passage, thereby improving the utilization rate of heat energy and space.
It achieves a more compact space layout and higher thermal energy utilization, and is suitable for efficient drying of block foods, especially bread and other products.
Smart Images
Figure CN223349465U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to food processing equipment, in particular to a food drying device. Background Art
[0002] Tunnel drying machines place materials on a drying tray in a drying vehicle, which then moves forward through a tunnel to dry them. Feeding and discharging occur at either end of the tunnel, typically using countercurrent or counter-parallel flow. They offer large loading capacity, sequential discharging, consistent product quality, low investment, and simple operation. They are primarily used for drying agricultural and sideline products such as fruits and vegetables, traditional Chinese medicine, and pet food. Their hot air convection heating method ensures zero contamination and fully complies with food hygiene standards. However, tunnels also have the drawbacks of requiring large floor space and inefficient thermal energy utilization. Consequently, there is a pressing need for a more compact drying device with improved thermal efficiency. Utility Model Content
[0003] The purpose of the utility model is to provide a food drying device.
[0004] The technical solution for achieving the purpose of the utility model is: a food drying device, which includes a drying room body, wherein a vertical first chain transmission mechanism and a second chain transmission mechanism are installed inside the drying room body, the first chain transmission mechanism includes a first chain and a plurality of first sprockets, the first chain is meshed with each of the first sprockets for transmission and forms a first loop with several rotation angles from top to bottom, the second chain transmission mechanism includes a second chain and a plurality of second sprockets, the second chain is meshed with each of the second sprockets for transmission and forms a second loop with the same number of rotation angles as the first loop from top to bottom, the first loop is parallel to the second loop and is staggered front to back; a plurality of trays are horizontally installed between the first chain and the second chain along the rotation direction of the first chain, The tray has two diagonal corners, and the two diagonal corners of the tray are respectively connected to the first chain and the second chain through connecting shafts, and the distance between the first chain and the second chain is limited to the tray remaining horizontal when passing through each corner of the first chain; a loading area and an unloading area are provided on the conveying path of the tray in the drying room body, and a drying area is provided between the loading area and the unloading area, and the unloading area is located on the downward path of the tray after passing through several of the corners of the drying area; a group of heating units is installed at the bottom of each layer of the tray in the drying area, and a layer of partition is installed horizontally below each group of the heating units; an air inlet and an air outlet are provided in the drying room body, and the air inlet is located below the air outlet.
[0005] Furthermore, the air outlet is installed on the top of the drying room body.
[0006] Furthermore, the heating unit includes a plurality of heating plates arranged at intervals.
[0007] Furthermore, each heating plate of each heating unit group is tilted relative to the horizontal line, and the heating plate is tilted upward along the running direction of the tray above the heating plate. This is beneficial to increase the air flow in the drying room body, thereby dissipating the heat of the heating plate and quickly raising the temperature in the drying room body.
[0008] Furthermore, vertical partitions are longitudinally installed on the sides of the three adjacent layer partitions, and the installation positions of the layer partitions and the vertical partitions are limited to not interfering with the transmission of the first chain and the second chain and forming an S-shaped air passage in the drying room.
[0009] Furthermore, the pallet is rectangular, and the distance between the first chain and the second chain is equal to the width of one pallet.
[0010] Furthermore, the loading area and the unloading area are arranged adjacent to each other and on the same side, which is not only convenient for loading and unloading, but also helps save space, has high heat energy utilization rate, and further improves drying efficiency.
[0011] Furthermore, the loading area and the unloading area are located on both sides of the drying room body.
[0012] The food drying device implemented by the present invention has a tray that rotates between a first vertical circuit and a second vertical circuit, which saves more space than a tunnel-type baking machine and can dry food in multiple layers, greatly improving the utilization rate of heat energy. It is particularly suitable for drying block foods such as bread. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the main structure of the food drying device according to Example 1 of the present invention; wherein the arrow represents the conveying path of the tray;
[0014] Figure 2 This is a schematic diagram of the installation structure of the support plate and the first chain and the second chain described in Example 1 of the present utility model;
[0015] Figure 3 This is a schematic diagram of the main structure of the food drying device described in Example 2 of the present invention; wherein, the arrow represents the conveying path of the tray. DETAILED DESCRIPTION
[0016] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example 1
[0017] like Figure 1 and Figure 2As shown, a food drying device includes a drying room body 10, wherein a vertical first chain transmission mechanism 1 and a second chain transmission mechanism 2 are installed inside the drying room body 10, the first chain transmission mechanism 1 includes a first chain 11 and a plurality of first sprockets 12, the first chain 11 is meshed with each of the first sprockets 12 for transmission and forms a first loop 20 with several rotation angles from top to bottom, the second chain transmission mechanism 2 includes a second chain 21 and a plurality of second sprockets 22, the second chain 21 is meshed with each of the second sprockets 22 for transmission and forms a second loop 30 with the same number of rotation angles as the first loop, the first loop 20 and the second loop 30 are parallel and staggered front to back; a plurality of rectangular trays 3 are horizontally installed in sequence between the first chain 11 and the second chain 21 along the rotation direction of the first chain 11, the two diagonal corners 31 of the tray 3 are connected to the first chain 11 and the second chain 21 respectively by a connecting shaft 32, and the distance of the front-to-back stagger between the first chain 11 and the second chain 21 is the width A of one tray 3.
[0018] A loading area 40 and a unloading area 50 are provided on the conveying path of the tray 3 in the drying room body 1, and a drying area 60 is provided between the loading area and the unloading area. In this embodiment, the loading area 40 and the unloading area 50 are adjacently arranged and are located together on the right side of the drying room body 1. The unloading area 30 is located on the downward path of the tray 3 after it passes through several corners of the drying area. The conveying path of the tray 3 in the drying area 50 has four levels.
[0019] A group of heating units 4 is installed at the bottom of each layer of the tray 3 in the drying area 60, and the heating units 4 include several heating plates 41 arranged at intervals, and each heating plate 41 of each group of the heating units 4 is inclined relative to the horizontal line, and the heating plates 41 are inclined upward along the running direction of the tray 3 above the heating plates 41; a layer of partition 5 is installed horizontally at the bottom of each group of the heating units 4, and vertical partitions 6 are installed longitudinally on the sides of three adjacent layers of partitions, and the installation positions of the layer partitions 5 and the vertical partitions 6 are limited to not interfering with the chain drive and forming an S-shaped air passage in the drying room; an air inlet 7 and an air outlet 8 are provided in the drying room body 1, and the air outlet 8 is installed at the top of the drying room body 1, and the air inlet 7 is located at the bottom of the drying area.
[0020] Taking bread baking as an example, during operation, an operator places bread dough 100 one by one onto trays 3 in the loading area 40. The first and second chain drive mechanisms 1 and 2 rotate, driving the trays 3 upward to the highest level. The trays then descend step by step along the tray 3's conveyor path within the drying chamber 1 through the drying area 60, returning to the unloading area 50 adjacent to the loading area 40, completing the drying process. During this process, heating units 4 maintain the temperature within the drying area. Air enters the drying area through air inlet 7 and rises layer by layer along the partitions 5 and heating plates 41. Because the heating plates 41 are located below the trays 3, the air moves upward from the bottom. The bottom layer is dry air, while the top layer is moist air (relative to the lower layer). With the finished product below and the moist bread dough above, the relative humidity of the bread and air is more similar, facilitating balanced drying. Furthermore, the heat energy from the upward air from below is continuously utilized as it rises layer by layer, resulting in greater energy savings.
[0021] In this embodiment, the loading area and the unloading area are on the same side, which is not only convenient for loading and unloading, but also helps to save space, has high heat energy utilization rate, and further improves the drying efficiency. Example 2
[0022] The installation structure of the tray 3 in embodiment 2 is the same as that in embodiment 1. Figure 3 As shown, the difference is that the loading area 40 and the unloading area 50 are located on both sides of the drying room body 1, and the drying area 60 between the loading area 40 and the unloading area 50 has three levels.
[0023] The shape of the tray of the present invention is not limited to a rectangle, but can also be an ellipse, etc., as long as it has a diagonal shape connected to the first chain and the second chain; the distance between the first chain and the second chain can be slightly smaller or slightly larger than the width of the tray, as long as the tray can remain horizontal when passing through the corners of the first chain; the heating unit can be a whole heating plate, but the structure of several heating plates arranged at intervals is easy to form an air passage, which improves the efficiency of heat energy utilization, and when the heating plates of each group of the heating units are inclined relative to the horizontal line, and the heating plates are inclined upward along the running direction of the tray above the heating plates, it is beneficial to increase the gas flow of the drying room body and then dissipate the heat of the heating plates, thereby quickly increasing the temperature inside the drying room body; the vertical partitions are used to assist in forming an air passage inside the drying room body to improve the heat exchange efficiency of the tray; the installation position of the layer partitions and the vertical partitions is limited to not interfering with the chain transmission and forming an S-shaped air passage in the drying room.
[0024] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.
Claims
1. A food drying device, comprising a drying room body, characterized in that: The drying room body is provided with a vertical first chain transmission mechanism and a second chain transmission mechanism, wherein the first chain transmission mechanism includes a first chain and a plurality of first sprockets, the first chain is meshed with each of the first sprockets for transmission and forms a first loop with several rotation angles from top to bottom, the second chain transmission mechanism includes a second chain and a plurality of second sprockets, the second chain is meshed with each of the second sprockets for transmission and forms a second loop with the same number of rotation angles as the first loop from top to bottom, the first loop is parallel to the second loop and is staggered front to back; a plurality of trays are horizontally installed in sequence between the first chain and the second chain along the rotation direction of the first chain, the trays have two diagonal corners, and the two ends of the trays are parallel to the first loop and are staggered front to back; The diagonals are connected to the first chain and the second chain respectively through connecting shafts, and the distance between the first chain and the second chain is limited to the extent that the tray remains horizontal when passing through each corner of the first chain; a loading area and an unloading area are provided on the conveying path of the tray in the drying room body, and a drying area is provided between the loading area and the unloading area, and the unloading area is located on the downward path of the tray after passing through several of the corners of the drying area; a group of heating units is installed at the bottom of each layer of the tray in the drying area, and a layer of partition is installed horizontally below each group of the heating units; an air inlet and an air outlet are provided in the drying room body, and the air inlet is located below the air outlet.
2. The food drying device according to claim 1, characterized in that: The air outlet is installed on the top of the drying room body.
3. The food drying device according to claim 1, characterized in that: The heating unit includes a plurality of heating plates arranged at intervals.
4. The food drying device according to claim 3, characterized in that: The heating plates of each group of the heating units are arranged obliquely relative to a horizontal line, and the heating plates are arranged obliquely upward along a running direction of the tray above the heating plates.
5. The food drying device according to claim 1, characterized in that: Vertical partitions are longitudinally installed on the sides of three adjacent layer partitions. The installation positions of the layer partitions and the vertical partitions are limited to not interfering with the transmission of the first chain and the second chain and forming an S-shaped air passage in the drying room.
6. The food drying device according to claim 1, characterized in that: The pallet is rectangular, and the distance between the first chain and the second chain is equal to the width of the pallet.
7. The food drying device according to claim 1, characterized in that: The loading area and the unloading area are arranged adjacent to each other.
8. The food drying device according to claim 1, characterized in that: The loading area and the unloading area are located on both sides of the drying room body.