Spiral conveying type drying line

Abstract

The utility model discloses a spiral conveying type drying line, which relates to the technical field of continuous drying production equipment and comprises a drying chamber and a spiral conveying tower, and the spiral conveying tower comprises a feeding section, a spiral ascending section, a transverse conveying section, a spiral descending section and a discharging section which are connected in sequence. The spiral ascending section, the transverse conveying section and the spiral descending section are all arranged in the drying chamber. The end, away from the spiral ascending section, of the feeding section and the end, away from the spiral descending section, of the discharging section both extend out of the drying chamber. The spiral conveying type drying line is high in assembly line degree, suitable for batch continuous drying production of materials, good in drying uniformity and stability and low in energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous drying production equipment, in particular to a spiral conveyor drying line. Background Art

[0002] At present, in the continuous batch drying production of materials, a conveying mesh belt is usually arranged in a drying chamber, and the materials are laid on the conveying mesh belt and conveyed through the drying chamber, and the hot air in the drying chamber flows through the materials to achieve the purpose of drying. In the prior art, when planning and constructing a continuous drying production line, the conveying mesh belt is usually arranged in a planar form (such as in a straight line, S-shaped, etc.). To achieve thorough drying, the size of the drying chamber needs to be designed relatively large, which occupies a large area; at the same time, it is difficult to achieve uniform air distribution in each area of this large-sized drying chamber, and its drying uniformity and stability are poor. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a spiral conveyor drying line, which has a high degree of assembly line, is suitable for batch continuous drying production of materials, has good drying uniformity and stability, and less energy consumption.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] The spiral conveyor drying line includes a drying chamber and a spiral conveyor tower. The spiral conveyor tower includes a feeding section, a spiral ascending section, a horizontal conveying section, a spiral descending section and a discharging section which are connected in sequence. The spiral ascending section, the horizontal conveying section and the spiral descending section are all arranged in the drying chamber, and one end of the feeding section far away from the spiral ascending section and one end of the discharging section far away from the spiral descending section both extend out of the drying chamber.

[0006] Specifically, one end of the feeding section far away from the spiral ascending section and one end of the discharging section far away from the spiral descending section are both located on the same side of the drying chamber.

[0007] Specifically, the heights of one end of the feeding section far away from the spiral ascending section and one end of the discharging section far away from the spiral descending section are basically the same.

[0008] Further, a number of air distribution components are evenly distributed in a circle on the inner sides of the spiral ascending section and the spiral descending section. The air distribution components include an air guide hood, a heat exchanger, an air distribution fan, and an air distribution pipe. The air guide hood is arranged vertically. A through air guide groove is opened in one side of the air guide hood along the vertical direction. The side of the air guide hood where the air guide groove is opened is close to the inner side of the spiral ascending section or the inner side of the spiral descending section. One end of the heat exchanger is communicated with the bottom of the air guide groove. The suction end of the air distribution fan is communicated with the other end of the heat exchanger. The discharge end of the air distribution fan is communicated with one end of the air distribution pipe. The other end of the air distribution pipe extends above the top layer of the spiral ascending section or the top layer of the spiral descending section.

[0009] Further, wind shielding covers are arranged on the outer sides of the spiral ascending section and the spiral descending section.

[0010] Further, wind shielding plates are arranged below the spiral ascending section and the spiral descending section. The inner wall or the bottom end of the wind shielding cover is fixedly connected with the wind shielding plate. The bottom end of the air guide hood is fixedly connected with the wind shielding plate.

[0011] Specifically, an air distribution hood is communicatively connected to the end of the air distribution pipe away from the air distribution fan.

[0012] Further, a fresh air component is further included. The fresh air component includes a fresh air fan and a number of fresh air pipes. The fresh air fan is arranged outside the drying chamber. One end of the fresh air pipe is communicated with the discharge end of the fresh air fan. The other end of the fresh air pipe is communicated with the heat exchanger.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By introducing the spiral conveyor tower in the food cooling industry into the drying industry, the spiral conveyor tower is arranged in the drying chamber to realize the drying and continuous conveying of materials. The form of the traditional flat-placed conveying mesh belt is changed, which is beneficial to reducing the floor area of the drying chamber. The materials are spirally circulated and conveyed in the drying chamber, and each material passes through each area in the drying chamber multiple times, which is beneficial to reducing the poor drying uniformity and stability caused by uneven air distribution.

[0015] Combined with the structural design of the spiral conveyor tower, an air distribution component, a wind shielding cover, and a wind shielding plate are provided to realize the circulation of hot air in a small range, which is beneficial to improving the air distribution uniformity, thereby improving the drying uniformity and stability. At the same time, the utilization rate of hot air can be improved and waste heat utilization can be realized, reducing energy consumption. Description of the Drawings

[0016] Figure 1 It is a schematic plan view of the spiral conveyor type drying line of the present utility model under a top view;

[0017] Figure 2Schematic structural diagram of the spiral conveyor tower in the spiral conveyor type drying line of the present utility model;

[0018] Figure 3 is Figure 2 Schematic diagram of the internal structure of the shown spiral conveyor tower;

[0019] Figure 4 Schematic structural diagram of the air distribution component in the spiral conveyor type drying line of the present utility model;

[0020] Figure 5 Floor plan of the workshop for the production of dried Gongcai using the spiral conveyor type drying line of the present utility model;

[0021] In the figure, 1 - drying chamber, 2 - feeding section, 3 - discharging section, 4 - spiral ascending section, 5 - horizontal conveying section, 6 - spiral descending section, 7 - peeling machine, 8 - sorting table, 9 - slitting machine, 10 - slitting conveyor belt, 11 - bubble cleaning machine, 12 - draining and drying machine, 13 - dry blanching and disinfection equipment, 14 - cutting machine, 15 - packaging machine, 16 - air guiding cover, 17 - heat exchanger, 18 - air distribution fan, 19 - air distribution duct, 20 - air distribution hood, 21 - wind shielding cover, 22 - wind shielding plate, 23 - fresh air fan, 24 - fresh air duct. Detailed implementation manners

[0022] The technical solution of the present utility model will be further described in detail below with reference to the accompanying drawings, but the protection scope of the present utility model is not limited to the following description.

[0023] As Figures 1 to 3 shown, the spiral conveyor type drying line includes a drying chamber 1 and a spiral conveyor tower. The spiral conveyor tower is an existing device for the food cooling industry, which includes a feeding section 2, a spiral ascending section 4, a horizontal conveying section 5, a spiral descending section 6 and a discharging section 3 that are connected in sequence. The spiral conveyor tower is in the form of a conveying mesh belt. Materials can enter the spiral ascending section 4 from the feeding section 2, and then be conveyed spirally upward in the spiral ascending section 4, then enter the spiral descending section 6 through the horizontal conveying section 5, and then be conveyed spirally downward in the spiral descending section 6, and finally be discharged through the discharging section 3. The above-mentioned spiral ascending section 4, horizontal conveying section 5 and spiral descending section 6 are all arranged in the drying chamber 1. During the above conveying process, the materials can be dried by the hot air in the drying chamber 1; one end of the feeding section 2 far from the spiral ascending section 4 and one end of the discharging section 3 far from the spiral descending section 6 both extend outside the drying chamber 1, which can facilitate connection with external equipment and realize continuous drying production.

[0024] This spiral conveyor drying line changes the form of the traditional flat-arranged conveyor belt by introducing the spiral conveyor tower in the food cooling industry into the drying industry, which is beneficial to reducing the floor area of the drying chamber 1; the materials are spirally circulated and conveyed in the drying chamber 1, and each material passes through various areas in the drying chamber multiple times, which is beneficial to reducing the poor drying uniformity and stability caused by uneven air distribution.

[0025] During specific implementation, one end of the feeding section 2 far from the spiral ascending section 4 and one end of the discharging section 3 far from the spiral descending section 6 are both located on the same side of the drying chamber 1; the heights of one end of the feeding section 2 far from the spiral ascending section 4 and one end of the discharging section 3 far from the spiral descending section 6 are basically the same, which is beneficial to realizing the connection of the front and rear equipment of the production line. For example Figure 5 In a certain dried rattan vegetable production line shown, a peeling machine 7, a sorting table 8, a slicing machine 9, a slicing conveyor belt 10, a bubble cleaning machine 11, a draining and drying machine 12, and a dry blanching and disinfection equipment 13 are sequentially arranged in front of the feeding section 2, and a cutting machine 14 and a packaging machine 15 are sequentially arranged behind the discharging section 3; continuous drying production of dried rattan vegetables can be realized through this layout, and the entire production line is reasonably arranged.

[0026] Furthermore, as Figure 3 、 Figure 4 shown, a number of air distribution components are evenly distributed in a circular pattern on the inner sides of the spiral ascending section 4 and the spiral descending section 5. The air distribution component includes an air guide hood 16, a heat exchanger 17, an air distribution fan 18, and an air distribution pipe 19. The air guide hood 16 is vertically arranged, and a through air guide groove is opened along the vertical direction on one side of the air guide hood 16. The side of the air guide hood 16 where the air guide groove is opened is close to the inner side of the spiral ascending section 4 or the inner side of the spiral descending section 5, and the air guide groove is communicated with the inner sides of each layer of the spiral section (for the convenience of description, the spiral ascending section 4 and the spiral descending section 5 are collectively referred to as the spiral section); one end of the heat exchanger 17 is communicated with the bottom of the air guide groove, the suction end of the air distribution fan 18 is communicated with the other end of the heat exchanger 17, the discharge end of the air distribution fan 18 is communicated with one end of the air distribution pipe 19, and the other end of the air distribution pipe 19 extends above the top layer of the spiral ascending section 4 or the top layer of the spiral descending section 5. Any form of heat source is selected for the heat exchanger 17. When the air distribution fan 18 is started, the hot air containing waste heat in each layer of the spiral section can be sucked into the heat exchanger 17 for heating through suction, and the heated air is discharged after being conveyed through the air distribution pipe 19; since the end of the air distribution pipe 19 is arranged above the top layer of the spiral section, the discharged hot air is in the form of downward blowing. At the same time, since the spiral conveyor tower is a hollow conveyor belt structure, the hot air can blow through each layer of the spiral section in turn to cool the materials on each layer. Through the setting of this air distribution component, the hot air is circulated in a small range, which is beneficial to improving the air distribution uniformity, thereby improving the drying uniformity and stability. At the same time, the utilization rate of the hot air can be improved and waste heat utilization can be realized, reducing energy consumption.

[0027] During specific implementation, an air distribution hood 20 is also connected and arranged at one end of the air distribution duct 19 far away from the air distribution fan 18 to divert the hot air discharged from the air distribution duct 19, so that the hot air is evenly distributed and the drying uniformity is improved.

[0028] Furthermore, as Figure 2 described, windshields 21 are arranged on the outer sides of both the spiral rising section 4 and the spiral descending section 6. The windshields 21 make the outer sides of the spiral sections closed, reducing the escape of hot air to the outside and being beneficial to the recovery and utilization of waste heat.

[0029] During specific implementation, as Figure 3 shown, windshields 22 are arranged below both the spiral rising section 4 and the spiral descending section 6. The inner wall or bottom end of the windshield 21 is fixedly connected to the windshield 22, and the bottom end of the air guiding hood 16 is fixedly connected to the windshield 22. The windshield 22 is used to close the bottom end of the spiral section to facilitate the recovery and utilization of waste heat. It should be understood that there is a distance between the windshield 22 and the bottom surface of the bottom layer of the spiral section. A flow space is enclosed among the windshield 22, the windshield 21 and the bottom surface of the bottom layer of the spiral section. The suction port of the air distribution fan 18 is arranged facing this flow space to ensure that the materials at the bottom layer of the spiral section can participate in drying.

[0030] Furthermore, as Figure 1 shown, a fresh air component is also provided. The fresh air component includes a fresh air fan 23 and a plurality of fresh air ducts 24. The fresh air fan 23 is arranged outside the drying chamber 1 to avoid being affected by the hot air. One end of the fresh air duct 24 is communicated with the discharge end of the fresh air fan 23, and the other end of the fresh air duct 24 is communicated with the heat exchanger 17 for supplementing fresh air.

[0031] The above description is only a preferred implementation mode of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as an exclusion of other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. Screw conveyor type drying line, including a drying chamber, characterized in that, It further includes a spiral conveyor tower, which includes a feeding section, a spiral ascending section, a horizontal conveying section, a spiral descending section and a discharging section connected in sequence. The spiral ascending section, the horizontal conveying section and the spiral descending section are all arranged in the drying chamber, and one end of the feeding section far from the spiral ascending section and one end of the discharging section far from the spiral descending section both extend outside the drying chamber.

2. The spiral conveyor drying line according to claim 1, wherein One end of the feeding section far from the spiral ascending section and one end of the discharging section far from the spiral descending section are both located on the same side of the drying chamber.

3. The spiral conveyor drying line according to claim 1, characterized in that, The heights of one end of the feeding section far from the spiral ascending section and one end of the discharging section far from the spiral descending section are basically the same.

4. The spiral conveyor drying line according to any one of claims 1 to 3, characterized in that, A number of air distribution components are evenly distributed in a circle on the inner sides of the spiral ascending section and the spiral descending section. The air distribution components include an air guide hood, a heat exchanger, an air distribution fan and an air distribution pipe. The air guide hood is arranged vertically, and a through air guide groove is opened along the vertical direction on one side of the air guide hood. The side of the air guide hood where the air guide groove is opened is close to the inner side of the spiral ascending section or the inner side of the spiral descending section. One end of the heat exchanger is communicated with the bottom of the air guide groove, the suction end of the air distribution fan is communicated with the other end of the heat exchanger, the discharge end of the air distribution fan is communicated with one end of the air distribution pipe, and the other end of the air distribution pipe extends above the top layer of the spiral ascending section or the top layer of the spiral descending section.

5. The spiral conveyor drying line according to claim 4, characterized in that, Wind shields are arranged on the outer sides of the spiral ascending section and the spiral descending section.

6. The spiral conveyor drying line according to claim 5, characterized in that, Wind baffle plates are arranged below the spiral ascending section and the spiral descending section. The inner wall or bottom end of the wind shield is fixedly connected with the wind baffle plate, and the bottom end of the air guide hood is fixedly connected with the wind baffle plate.

7. The spiral conveyor drying line according to claim 4, characterized in that, An air distribution hood is connected and arranged at the end of the air distribution pipe far from the air distribution fan.

8. The spiral conveyor type drying line according to claim 4, wherein It further includes a fresh air component, which includes a fresh air fan and a number of fresh air pipes. The fresh air fan is arranged outside the drying chamber. One end of the fresh air pipe is communicated with the discharge end of the fresh air fan, and the other end of the fresh air pipe is communicated with the heat exchanger.

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