Double-air-chamber up-down circulating air supply multi-layer continuous drying machine

Abstract

The utility model relates to the technical field of equipment design and manufacturing of continuous drying machines, and discloses a double-air-chamber vertical circulation air supply multilayer continuous drying machine which comprises a main body frame, a conveying assembly, a double-side air chamber assembly, a heat source and a driving assembly. The main body frame comprises a heat preservation outer plate, a supporting frame, an end head wind blocking assembly, a middle layer wind isolation assembly, a feeding hopper and a discharging hopper, the conveying assembly is fixed to the supporting frame and comprises multiple layers of conveying mesh belt faces and a transmission shaft, and the double-side wind chamber assemblies are located on the two sides of the main body frame. According to the utility model, by adopting a double-side air chamber air supply mode, the upper circulating fan and the lower circulating fan are distributed in a staggered manner, and the drying main body adopts an up-down multi-layer conveying structure, materials are turned over for multiple times in the drying process, so that fresh materials can be dried more quickly and uniformly, primary processing drying of fruits, vegetables and agricultural and sideline products can be effectively assisted, and the drying effect is improved; and finally, the drying cost is reduced, and the economic benefits of the materials are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment design and manufacturing of continuous drying machines, in particular to a multi-layer continuous drying machine with double air chambers for up and down circulation air supply. Background Art

[0002] Dryers are mainly used for drying fresh materials such as cardamom and peppers. They can also be used for continuous drying of other fruits and vegetables, agricultural and sideline products, Chinese medicinal materials and other materials. At present, the drying in the market is mainly based on stacking drying. The material accumulation is relatively thick, and it is difficult to achieve uniform drying of the material. At the same time, manual intervention is required in the process of feeding and discharging materials, and some materials need to be manually turned during the drying process. Some also adopt multi-layer continuous drying methods, but the air supply method is relatively single, mostly directly supplied from the bottom layer or the middle of multiple layers, resulting in uneven air volume distribution between the upper and lower layers, and large hot air loss, which directly leads to an increase in the drying cost of the equipment. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a double-air chamber up and down circulation air supply multi-layer continuous dryer, aiming to improve the problem that it is difficult to achieve uniform drying of materials in the prior art, the air supply method is relatively single, the air volume distribution is uneven, and the hot air loss is large, which directly causes the increase in the drying cost of the equipment.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A double-chamber upper and lower circulation air supply multi-layer continuous drying machine, comprising a main frame, a conveying assembly, a double-side air chamber assembly, a heat source, and a driving assembly. The main frame comprises an insulating outer plate, a support frame, an end wind shield assembly, a middle wind shield assembly, a feed hopper, and a discharge hopper. The conveying assembly is fixed on the support frame, and comprises a multi-layer conveying mesh belt surface and a transmission shaft. The double-side air chamber assembly is located on both sides of the main frame and is fixed on the support frame, and comprises an upper circulation air duct, a lower circulation channel, and an air supply air chamber. The heat source is installed adjacent to the double-side air chamber assembly. The driving assembly is fixed on the support frame and is arranged in multiple groups.

[0006] Preferably, the insulating outer panel wraps the main frame and the double-sided wind chamber components into a relatively closed space, thereby achieving a thermal insulation effect. The end wind shielding component is arranged at the end of the main frame to isolate the upper and lower winds at the end of the layered isolation frame. The middle-layer wind isolation component is arranged in the interlayer at the end of each layer of the multi-layer conveyor belt surface to prevent hot air from leaking to the end without passing through the fresh material, which is not conducive to material drying.

[0007] Preferably, the multi-layer conveyor belt surface is independently layered and driven by a transmission shaft; the number of layers is determined by the processing volume, and the greater the processing volume, the more layers there are.

[0008] Preferably, the upper circulation air duct includes an upper circulation fan, a sensible heat exchanger and an upper connecting air duct. Moisture enters the upper connecting air duct from the top of the main frame and is discharged after passing through the sensible heat exchanger. Fresh air absorbs heat through the sensible heat exchanger and then enters the inlet air duct of the upper circulation fan and is supplied to the air chamber.

[0009] Preferably, the lower circulation channel includes a lower circulation fan and a lower connecting air duct, and the hot air with less moisture content at the bottom of the main frame is sucked into the air duct by the negative pressure of the lower circulation fan and supplied to the air chamber.

[0010] Preferably, the air supply chamber is connected and arranged in the length direction of the main frame, in which the hot air blown in by the upper circulation fan and the lower circulation fan is mixed, and then sucked into the multi-layer conveyor mesh belt surface under negative pressure to dry the fresh material. The heat source adopts a heating equipment that can heat up to seventy-five degrees Celsius, and can be selected from but not limited to air energy heat pumps and hot air boilers. The drive components are arranged according to the number of layers of the multi-layer conveyor mesh belt surface, with one group of drive components arranged for every three layers, and each group is equipped with a frequency converter.

[0011] Preferably, when the heat source is an air energy heat pump, a condenser is arranged in the air duct at the inlet end of the upper circulation fan, and the upper circulation fan and the lower circulation fan are staggered in the left and right wind chamber components on both sides, which is conducive to more uniform air supply in the length direction.

[0012] Preferably, the transmission shaft achieves a fast upper layer rotation speed and a fast lower layer rotation speed through chain transmission, and the upper layer rotation speed is two to one than the lower layer rotation speed.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, by adopting the double-sided wind chamber air supply method, the upper circulation fan and the lower circulation fan are staggered, and the drying body adopts an upper and lower multi-layer conveying structure, so that the material is turned over many times during the drying process, which is conducive to faster and more uniform drying of fresh materials, and can effectively assist the primary processing and drying of fruits, vegetables, agricultural and sideline products, improve the drying effect, improve the drying quality, and ultimately reduce the drying cost and improve the economic benefits of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a vertical cross-sectional view of a multi-layer continuous drying machine with double air chambers and up and down circulation air supply proposed by the utility model;

[0016] Figure 2 This is a cross-sectional view of a multi-layer continuous drying machine with double air chambers and up-and-down circulation air supply proposed by the utility model;

[0017] Figure 3 It is a top sectional view of a multi-layer continuous drying machine with double air chambers and up and down circulation air supply proposed by the utility model.

[0018] Legend:

[0019] 1. Main frame; 11. Insulation outer panel; 12. Support frame; 13. End wind shield assembly; 14. Middle layer wind shield assembly; 15. Feed hopper; 16. Discharge hopper; 2. Conveying assembly; 21. Multi-layer conveying mesh belt surface; 22. Transmission shaft; 3. Double-side air chamber assembly; 31. Upper circulation air duct; 311. Upper circulation fan; 312. Sensible heat exchanger; 313. Upper connecting air duct; 314. Condenser; 32. Lower circulation channel; 321. Lower circulation fan; 322. Lower connecting air duct; 33. Air supply chamber; 4. Heat source; 5. Driving assembly. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings of the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a double-air chamber upper and lower circulation air supply multi-layer continuous drying machine, including a main frame 1, a conveying component 2, a double-side air chamber component 3, a heat source 4, and a driving component 5. The main frame 1 includes an insulating outer plate 11, a support frame 12, an end wind shield component 13, a middle wind shield component 14, a feed hopper 15, and a discharge hopper 16. The conveying component 2 is fixed on the support frame 12, including a multi-layer conveying mesh belt surface 21 and a transmission shaft 22. The double-side air chamber component 3 is located on both sides of the main frame 1 and is fixed on the support frame 12, including an upper circulation air duct 31, a lower circulation channel 32, and an air supply air chamber 33. The heat source 4 is installed adjacent to the double-side air chamber component 3. The driving component 5 is fixed on the support frame 12 and is arranged in multiple groups.

[0022] Reference Figure 1 - Figure 3 The insulation outer plate 11 wraps the main frame 1 and the double-sided wind chamber components 3 into a relatively closed space, which has a heat preservation effect. The end wind shielding component 13 is arranged at the end of the main frame 1, and the upper and lower winds at the end of the layered isolation frame are separated. The middle layer wind isolation component 14 is arranged in the end interlayer of each layer of the multi-layer conveyor belt surface 21 to prevent hot air from leaking to the end without passing through the fresh material, which is not conducive to material drying.

[0023] Reference Figure 1 - Figure 3 The multi-layer conveyor belt surface 21 is independently layered and driven by a transmission shaft 22; the number of layers is determined by the processing volume, and the greater the processing volume, the more layers there are.

[0024] Reference Figure 1 - Figure 3 The upper circulation air duct 31 includes an upper circulation fan 311, a sensible heat exchanger 312 and an upper connecting air duct 313. Moisture enters the upper connecting air duct 313 from the top of the main frame 1, and is discharged after passing through the sensible heat exchanger 312. The fresh air absorbs heat through the sensible heat exchanger 312 and enters the inlet air duct of the upper circulation fan 311 and is supplied to the air chamber.

[0025] Reference Figure 1 - Figure 3 The lower circulation channel 32 includes a lower circulation fan 321 and a lower connecting air duct 322. The hot air with less moisture content at the bottom of the main frame 1 is sucked into the air duct by the negative pressure of the lower circulation fan 321 and supplied to the air chamber.

[0026] Reference Figure 1 - Figure 3 The air supply chamber 33 is connected and arranged in the length direction of the main frame 1, and the hot air blown in by the upper circulation fan 311 and the lower circulation fan 321 is mixed therein, and then sucked into the multi-layer conveyor mesh belt surface 21 under negative pressure to dry the fresh materials. The heat source 4 adopts a heating equipment that can heat up to seventy-five degrees Celsius, and can be selected from but not limited to air energy heat pumps and hot air boilers. The drive components 5 are arranged according to the number of layers of the multi-layer conveyor mesh belt surface 21, and a group of drive components 5 are arranged for every three layers, and each group is equipped with a frequency converter.

[0027] Reference Figure 1 - Figure 3 When the heat source 4 adopts an air energy heat pump, a condenser 314 is arranged in the air duct at the inlet end of the upper circulation fan 311, and the upper circulation fan 311 and the lower circulation fan 321 are staggered in the left and right of the double-sided air chamber assembly 3, which is conducive to more uniform air supply in the length direction.

[0028] Reference Figure 1 - Figure 3 The transmission shaft 22 realizes a fast upper layer speed and a fast lower layer speed through chain transmission, and the upper layer speed is two to one than the lower layer speed.

[0029] Working principle: The dryer adopts a double-sided air chamber air supply method, which is beneficial to improving the uniformity of hot air in the width direction. An up and down circulation air supply method is adopted on each side. The hot air with high humidity and temperature at the bottom is mixed with the newly-input hot air for many times and then supplied to the interlayer of the multi-layer conveyor mesh belt surface 21, which improves the efficiency of hot air taking away moisture between materials. At the same time, the up and down circulation air supply adopts a negative pressure air supply method from the drying body to reduce the risk of heat dissipation of the whole machine. In the length direction of the air supply chamber 33, the upper circulation fan 311 and the lower circulation fan 321 are staggered, which is more conducive to improving the uniformity of hot air in the length direction. The drying body adopts an up and down multi-layer conveying structure, so that the material is turned over many times during the drying process, and the thickness of the material on the multi-layer conveyor mesh belt surface 21 is greatly reduced, which is conducive to faster and more uniform drying of fresh materials, and can effectively assist in the primary processing and drying of fruits, vegetables, and agricultural and sideline products, improve the drying effect, improve the drying quality, and ultimately reduce its drying cost and improve the economic benefits of materials.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-air chamber up-and-down circulation air supply multi-layer continuous drying machine, comprising a main frame (1), a conveying assembly (2), a double-side air chamber assembly (3), a heat source (4), and a driving assembly (5), characterized in that: The main frame (1) comprises an insulating outer plate (11), a support frame (12), an end wind shield assembly (13), a middle wind shield assembly (14), a feed hopper (15), and a discharge hopper (16); the conveying assembly (2) is fixed on the support frame (12), and comprises a multi-layer conveying mesh belt surface (21) and a transmission shaft (22); the double-sided air chamber assembly (3) is located on both sides of the main frame (1) and is fixed on the support frame (12), and comprises an upper circulation air duct (31), a lower circulation channel (32), and an air supply air chamber (33); the heat source (4) is installed adjacent to the double-sided air chamber assembly (3); the driving assembly (5) is fixed on the support frame (12) and is arranged in multiple groups.

2. A double air chamber up and down circulation air supply multi-layer continuous drying machine according to claim 1, characterized in that: The heat-insulating outer plate (11) wraps the main frame (1) and the double-sided wind chamber components (3) into a relatively closed space, achieving a heat-insulating effect. The end wind shielding component (13) is arranged at the end of the main frame (1) to isolate the upper and lower winds at the end of the layered isolation frame. The middle layer wind isolation component (14) is arranged in the end interlayer of each layer of the multi-layer conveying mesh belt surface (21) to prevent hot air from leaking to the end without passing through the fresh material, which is not conducive to material drying.

3. A double air chamber up and down circulation air supply multi-layer continuous drying machine according to claim 1, characterized in that: The multi-layer conveyor mesh belt surface (21) is independently layered and driven by a transmission shaft (22); the number of layers is determined by the processing volume, and the greater the processing volume, the more layers there are.

4. The double-air chamber up-and-down circulation air supply multi-layer continuous drying machine according to claim 1, characterized in that: The upper circulation air duct (31) comprises an upper circulation fan (311), a sensible heat exchanger (312) and an upper connecting air duct (313). Moisture enters the upper connecting air duct (313) from the top of the main frame (1), and is discharged after passing through the sensible heat exchanger (312). Fresh air absorbs heat through the sensible heat exchanger (312) and enters the inlet air duct of the upper circulation fan (311), and is supplied to the air chamber.

5. The double air chamber up-and-down circulation air supply multi-layer continuous drying machine according to claim 1, characterized in that: The lower circulation channel (32) comprises a lower circulation fan (321) and a lower connecting air duct (322). Hot air with less moisture content at the bottom of the main frame (1) is sucked into the air duct by the negative pressure of the lower circulation fan (321) and supplied to the air chamber.

6. A double air chamber up-and-down circulation air supply multi-layer continuous drying machine according to claim 1, characterized in that: The air supply chamber (33) is connected and arranged in the length direction of the main frame (1), and the hot air blown in by the upper circulation fan (311) and the lower circulation fan (321) is mixed therein, and then sucked into the multi-layer conveyor mesh belt surface (21) under negative pressure to dry the fresh materials. The heat source (4) adopts a heating device that can heat up to 75 degrees Celsius, and can be selected from but not limited to air energy heat pumps and hot air boilers. The drive components (5) are arranged according to the number of layers of the multi-layer conveyor mesh belt surface (21), with one group of drive components (5) arranged for every three layers, and each group is equipped with a frequency converter.

7. A double air chamber up-and-down circulation air supply multi-layer continuous drying machine according to claim 1, characterized in that: When the heat source (4) is an air energy heat pump, a condenser (314) is arranged in the air duct at the inlet end of the upper circulation fan (311), and the upper circulation fan (311) and the lower circulation fan (321) are arranged in a staggered manner on the left and right sides of the double-sided air chamber assembly (3), which is conducive to more uniform air supply in the length direction.

8. The double-air chamber up-and-down circulation air supply multi-layer continuous drying machine according to claim 1, characterized in that: The transmission shaft (22) achieves a high speed of the upper layer and a high speed of the lower layer through chain transmission, and the speed of the upper layer is two to one than that of the lower layer.

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