Continuous drying tower

Abstract

The utility model belongs to the technical field of drying towers. The continuous drying tower comprises a drying section which comprises a plurality of drying units arranged from top to bottom; the air inlet duct is arranged in the middle of the drying section; air inlet partition plates are arranged in the air inlet duct from top to bottom, and the air inlet duct is divided into at least two air inlet areas by the air inlet partition plates; the air inlet duct is provided with an air inlet and an air outlet; the air outlet ducts are arranged on the two sides of the drying section; air outlet partition plates are arranged in the air outlet duct from top to bottom, and the air outlet duct is divided into at least two air outlet areas by the air outlet partition plates; the air outlet partition plates are located between every two adjacent air inlet partition plates. The drying tower is used for solving the technical problems of energy waste and slow material surface temperature rise caused by the fact that heat of an existing drying tower cannot be effectively utilized and hot air is recycled.

Description

Technical Field

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

[0002] Traditional sterilization towers directly use commercially available material drying towers, whose main purpose is the material drying function, and the sterilization effect can be achieved as an auxiliary. After the hot air contacts the material in the drying tower, while quickly sterilizing, the remaining air is discharged into the atmosphere, without making full use of the characteristics of the hot air and causing energy waste. The technical solution is an upgrade based on the original process, adding a hot air recycling device for the sterilization drying tower, and realizing precise temperature control and contact time. Through two-way adjustment, sterilization is achieved while reducing energy consumption. At the same time, different production capacities can be achieved by adjusting the height of the drying area. It perfectly solves the problems of high output and high quality for customers.

[0003] A continuous sterilization drying tower is a device for sterilizing the surface of materials. Usually, it needs to be equipped with a heat source to generate clean hot air. The hot air fully contacts the surface of the material to kill the surface germs, but does not damage the internal characteristics of the material and keeps the original activity of the material.

[0004] Currently, domestic sterilization drying towers can basically achieve the sterilization function, but they are still in the form of traditional material drying towers, unable to achieve high-efficiency sterilization and high-quality effects. Although the basic function of material sterilization can be achieved, the energy consumption cost is relatively high.

[0005] Considering that the existing technology can also achieve the sterilization function of the drying tower, but the existing continuous sterilization drying tower solution cannot effectively utilize the hot air recycling of the drying tower, resulting in hot air waste and unable to quickly raise the temperature of the material surface. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a continuous drying tower to solve the technical problems that the existing drying tower cannot effectively utilize the hot air recycling, resulting in energy waste and slow heating of the material surface.

[0007] To solve the above technical problems, the utility model adopts the following technical solutions. The continuous drying tower includes:

[0008] A drying section, including a plurality of drying units arranged from top to bottom; an air inlet and an air outlet are arranged on the drying section;

[0009] An air inlet duct is arranged in the middle of the drying section; an air inlet partition is arranged in the air inlet duct from top to bottom, and the air inlet partition divides the air inlet duct into at least two air inlet areas;

[0010] Outlet air ducts are arranged on both sides of the drying section; air outlet partitions are arranged in the outlet air ducts from top to bottom, and the air outlet partitions divide the outlet air ducts into at least two outlet air zones; the air outlet partitions are located between two adjacent inlet air partitions;

[0011] The upper inlet air zone is connected to the lower inlet air zone through the corresponding upper drying unit, upper outlet air zone, and corresponding lower drying unit to form an S-shaped air duct;

[0012] The upper outlet air zone is connected to the lower outlet air zone through the corresponding drying unit, lower inlet air zone, and corresponding lower drying unit to form an S-shaped air duct.

[0013] The utility model optimizes the internal air ducts of the continuous sterilization positive pressure drying tower, enabling the recycling of hot air, increasing the contact area between hot air and materials, and reducing the energy consumption of the drying tower. The utility model makes full use of the hot air in the sterilization drying tower, recycles the hot air, and makes the hot air follow an S-shaped path in the drying tower to ensure that the high-temperature hot air can quickly raise the temperature of the material surface in a short time and kill the germs on the surface.

[0014] To solve the above technical problems, the utility model adopts the following technical solutions. The number of the inlet air partitions is 3, and the 3 inlet air partitions divide the inlet air duct into a first inlet air zone, a second inlet air zone, and a third inlet air zone arranged from bottom to top; the air inlet is arranged in the first inlet air zone; the air outlet is arranged in the third inlet air zone;

[0015] The number of the air outlet partitions is 2, and the air outlet partitions divide the outlet air duct into a first outlet air zone and a second outlet air zone arranged from bottom to top;

[0016] The third inlet air zone is communicated with the second inlet air zone through the corresponding drying unit and the second outlet air zone to form an S-shaped air duct;

[0017] The second inlet air zone is communicated with the first inlet air zone through the corresponding drying unit and the first outlet air zone to form an S-shaped air duct.

[0018] To solve the technical problem of how to divide the inlet air zones, the utility model adopts the following technical solutions. The height of the first inlet air zone is the same as that of the third inlet air zone;

[0019] The height of the second inlet air zone is greater than that of the first inlet air zone.

[0020] To solve the technical problem of how to divide the outlet air zones, the utility model adopts the following technical solutions. The height of the first outlet air zone is the same as that of the second outlet air zone.

[0021] To solve the technical problem of how to set the air outlet partition, the present utility model adopts the following technical solution. The inner end of the air outlet partition is inclined between the corresponding drying units, and the outer end of the air outlet partition is inclined upward.

[0022] To solve the technical problem of how to set the air inlet partition, the present utility model adopts the following technical solution. The air inlet partition is horizontally arranged between the corresponding drying units.

[0023] To solve the technical problem that the existing drying tower adopts a group of air inlet channels and cannot achieve precise temperature control, the present utility model adopts the following technical solution. A plurality of the drying sections are arranged from top to bottom;

[0024] A hot air blower is connected to the air inlet of each drying section.

[0025] The present utility model adopts two hot air inlets of a continuous sterilization drying tower, and one blower is configured for each hot air inlet. The blower is in a positive pressure state with respect to the drying tower. The positive pressure can rapidly increase the temperature of the material surface while not damaging the internal characteristics. At the same time, precise temperature control can be achieved, and during the entire sterilization process, the precise temperature control ensures the quality of the material.

[0026] To solve the technical problem of how to implement the drying unit, the present utility model adopts the following technical solution. The drying unit includes a first drying area and a second drying area. The first drying area and the second drying area are symmetrically arranged on both sides of the corresponding air inlet area; corresponding air outlet areas are respectively arranged outside the first drying area and the second drying area;

[0027] The corresponding first drying areas of a plurality of drying units arranged from top to bottom form a first grain column;

[0028] The corresponding second drying areas of a plurality of drying units arranged from top to bottom form a second grain column;

[0029] Angle box components are arranged in the first drying area and the second drying area, and the angle box components communicate with the corresponding air inlet area and air outlet area.

[0030] To solve the technical problem of how to achieve feeding and discharging of the drying tower, the present utility model adopts the following technical solution. A tempering grain storage layer, a discharging layer, and a feeding hopper are sequentially arranged from top to bottom at the bottom of the bottom drying section; a discharging device and a discharging motor are arranged on the discharging layer;

[0031] A grain storage layer is arranged from bottom to top at the top of the top drying section; a grain inlet is arranged on the top grain storage layer; a top partition plate is arranged in the middle of the bottom grain storage layer for distributing the grain in the grain storage layer to the first grain column and the second grain column.

[0032] To solve the technical problem that some continuous sterilization and drying towers cannot adjust the contact time between hot air and materials, that is, they cannot achieve two-way adjustment of high-efficiency sterilization and high quality, the present utility model adopts the following technical solutions. The discharging motor is a variable-frequency motor. The present utility model adopts variable-frequency discharging control of a continuous sterilization and drying tower, which can cooperate with the temperature to realize the contact time between materials and hot air, and achieve the effects of high-efficiency sterilization and high quality through two-way adjustment. The present utility model can adjust the residence time of materials in the tower and achieve the sterilization effect through two-way control, which conforms to the concept of energy conservation and high efficiency of the sterilization tower. Description of the Drawings

[0033] Figure 1 is the front view of the continuous drying tower of the present utility model;

[0034] Figure 2 is the side view of the continuous drying tower of the present utility model;

[0035] Figure 3 is the hot air path diagram of the S-shaped air duct of the continuous drying tower of the present utility model;

[0036] Figure 4 is the schematic diagram of the upper drying section of the present utility model;

[0037] Figure 5 is the three-dimensional view of the drying unit of the continuous drying tower of the present utility model;

[0038] Figure 6 is the longitudinal sectional view of the drying unit of the continuous drying tower of the present utility model;

[0039] In the figure:

[0040] 10 Continuous drying tower;

[0041] 100 Drying section; 110 Drying unit; 111 First drying area; 112 Second drying area; 113 Angular box assembly;

[0042] 200 Air inlet duct; 201 First air inlet; 202 First air outlet; 203 Second air inlet; 204 Second air outlet; 211 First air inlet area one; 212 Second air inlet area one; 213 Third air inlet area one; 214 First air inlet area two; 215 Second air inlet area two; 216 Third air inlet area two; 230 Air inlet partition; 231 First air inlet partition; 232 Second air inlet partition; 233 Third air inlet partition; 234 Fourth air inlet partition; 235 Fifth air inlet partition; 236 Sixth air inlet partition;

[0043] 300 Air outlet duct; 310 First air outlet duct; 311 First air outlet area one; 312 Second air outlet area one; 313 First air outlet area three; 314 Second air outlet area three; 320 Second air outlet duct; 321 First air outlet area two; 322 Second air outlet area two; 323 First air outlet area four; 324 Second air outlet area four; 330 Air outlet partition; 331 Air outlet partition one; 332 Air outlet partition two; 333 Air outlet partition three; 334 Air outlet partition four; 335 Air outlet partition five; 336 Air outlet partition six; 337 Air outlet partition seven; 338 Air outlet partition eight;

[0044] 400 Hot air blower;

[0045] 500 Conditioning grain storage layer;

[0046] 600 Discharging layer; 610 Discharging device; 620 Discharging motor;

[0047] 700 Discharge hopper; 701 Legs;

[0048] 800 Grain storage layer; 801 Grain inlet; 802 Top partition board;

[0049] 910 First grain column; 920 Second grain column. Detailed implementation mode

[0050] Embodiment 1

[0051] As Figure 1-6 shown, the continuous drying tower 10 includes a drying section 100, an air inlet duct 200, and an air outlet duct 300.

[0052] The number of drying sections 100 is at least 2. The drying sections 100 are arranged from top to bottom. In this embodiment, the number of drying sections 100 is 2, including an upper drying section and a lower drying section.

[0053] A grain storage layer 800 is installed at the top of the top drying section. The number of layers of the grain storage layer 800 is at least 2, and several layers of grain storage layers 900 are arranged from bottom to top. In this embodiment, the number of layers of the grain storage layer 800 is 3. A conical top is installed on the top grain storage layer, and a grain inlet 801 is installed at the center of the conical top. A top partition board 802 is installed in the middle of the bottom grain storage layer. The top partition board 802 is arranged horizontally and is used to distribute the grain in the grain storage layer to the first grain column 910 and the second grain column 920.

[0054] A conditioning grain storage layer 500, a discharging layer 600, and a discharge hopper 700 are sequentially arranged from top to bottom below the bottom drying section. The discharge hopper 700 is installed on the legs 701.

[0055] The discharging layer 600 inside the continuous sterilization and drying tower consists of a discharging device 610 and a discharging motor 620. The discharging motor 620 is preferably a variable-frequency motor. The variable-frequency motor changes its speed by running at different frequencies, driving the operation of the discharging device to control the discharging amount. It can control the residence time of the material in the tower. Combined with the precise control of the above temperature, the actual sterilization effect can be adjusted bidirectionally.

[0056] The drying section 100 includes a number of drying units 110 arranged from top to bottom.

[0057] The air inlet duct 200 is arranged in the middle of the drying section 100. The air inlet duct 200 is provided with an air inlet and an air outlet. The air inlet is located at the lower part of the air inlet duct 200, and a hot air blower 400 is connected to the air inlet. The air outlet is located at the upper part of the air inlet duct 200. Specifically, the air inlet duct 200 of the upper drying section is provided with an air inlet one 201 and an air outlet one 202. A hot air blower 400 is connected to the air inlet one 201 of the upper drying section. The air inlet duct 200 of the lower drying section is provided with an air inlet two 203 and an air outlet one 204. A hot air blower 400 is connected to the air inlet two 203 of the lower drying section.

[0058] An air inlet partition 230 is arranged in the air inlet duct 200 from top to bottom. The air inlet partition 230 divides the air inlet duct into at least two air inlet areas.

[0059] In one embodiment, the air inlet partition 230 is horizontally arranged between the corresponding drying units 110.

[0060] In one embodiment, the number of the air inlet partitions 230 is 3. The three air inlet partitions 230 divide the air inlet duct 200 of a single drying section into three air inlet areas arranged from bottom to top.

[0061] Specifically, the air inlet partition one 231, the air inlet partition two 232, and the air inlet partition three 233 divide the air inlet duct 200 of the upper drying section into a first air inlet area one 211, a second air inlet area one 212, and a third air inlet area one 213 arranged from bottom to top; the air inlet one 201 is arranged in the first air inlet area one 211; the air outlet one 202 is arranged in the third air inlet area one 213.

[0062] In one embodiment, the height of the second air inlet area one 212 is greater than the height of the first air inlet area one 211. The height of the second air inlet area one 212 is greater than the height of the third air inlet area one 213. Preferably, the height of the first air inlet area one 211 is the same as the height of the third air inlet area one 213.

[0063] The air inlet partition four 234, the air inlet partition five 235, and the air inlet partition six 236 divide the air inlet duct 200 of the lower drying section into a first air inlet area two 214, a second air inlet area two 215, and a third air inlet area two 216 arranged from bottom to top; an air inlet two 203 is arranged in the first air inlet area two 214; an air outlet two 204 is arranged in the third air inlet area two 213.

[0064] In one embodiment, the height of the second air inlet area two 215 is greater than the height of the first air inlet area two 214. The height of the second air inlet area two 215 is greater than the height of the third air inlet area two 216. Preferably, the height of the first air inlet area two 2114 is the same as the height of the third air inlet area two 216.

[0065] Air outlet ducts 300 are installed on both sides of the drying section 100. The air outlet ducts 300 include a first air outlet duct 310 and a second air outlet duct 320.

[0066] The first air outlet duct 310 is located on the left side of the drying section 100. The second air outlet duct 320 is located on the right side of the drying section 100.

[0067] An air outlet partition 330 is arranged in the first air outlet duct 310 from top to bottom. The air outlet partition 330 divides the first air outlet duct 310 into at least two air outlet areas; the air outlet partition 330 is located between two adjacent air inlet partitions 230.

[0068] In one embodiment, the inner end of the air outlet partition 330 is arranged between the corresponding drying units 110, and the outer end of the air outlet partition 330 is inclined upward.

[0069] Specifically, the number of air outlet partitions 330 in the first air outlet duct 310 of the upper drying section is 2, including an air outlet partition one 331 and an air outlet partition two 332. The two divide the first air outlet duct 310 into a first air outlet area one 311 and a second air outlet area one 312 arranged from bottom to top.

[0070] In one embodiment, the height of the first air outlet area one 311 is the same as the height of the second air outlet area one 322.

[0071] Specifically, the number of air outlet partitions 330 in the first air outlet duct 310 of the lower drying section is 2, including an air outlet partition five 335 and an air outlet partition six 336. The two divide the first air outlet duct 310 of the lower drying section into a first air outlet area three 313 and a second air outlet area three 314 arranged from bottom to top.

[0072] In one embodiment, the height of the first air outlet area three 313 is the same as the height of the second air outlet area three 314.

[0073] An air outlet partition plate 330 is arranged in the second air outlet duct 320 from top to bottom. The air outlet partition plate 330 divides the second air outlet duct 320 into at least two air outlet areas; the air outlet partition plate 330 is located between two adjacent air inlet partition plates 230.

[0074] In one embodiment, the inner end of the air outlet partition plate 330 is arranged between the corresponding drying units 110, and the outer end of the air outlet partition plate 330 is inclined upward.

[0075] Specifically, the number of air outlet partition plates 330 in the second air outlet duct 320 of the upper drying section is 2, including an air outlet partition plate three 333 and an air outlet partition plate four 334. The two divide the second air outlet duct 320 of the upper drying section into a first air outlet area two 321 and a second air outlet area two 322 arranged from bottom to top.

[0076] In one embodiment, the height of the first air outlet area two 321 is the same as the height of the second air outlet area two 322.

[0077] Specifically, the number of air outlet partition plates 330 in the second air outlet duct 320 of the lower drying section is 2, including an air outlet partition plate seven 337 and an air outlet partition plate eight 338. The two divide the second air outlet duct 320 of the lower drying section into a first air outlet area four 323 and a second air outlet area four 324 arranged from bottom to top.

[0078] In one embodiment, the height of the first air outlet area four 323 is the same as the height of the second air outlet area four 324.

[0079] In one embodiment, the drying unit 110 includes a first drying area 111 and a second drying area 112. The first drying area 111 and the second drying area 112 are symmetrically arranged on both sides of the corresponding air inlet area; corresponding air outlet areas are respectively arranged on the outer sides of the first drying area 111 and the second drying area 112.

[0080] The corresponding first drying areas 111 of several drying units 110 arranged from top to bottom form a first grain column 910; the corresponding second drying areas 112 of several drying units 110 arranged from top to bottom form a second grain column 920.

[0081] An angle box assembly 113 is installed in the first drying area 111, and the angle box assembly 113 communicates with the corresponding air inlet area and air outlet area.

[0082] An angle box assembly 113 is installed in the second drying area 112, and the angle box assembly 113 communicates with the corresponding air inlet area and air outlet area.

[0083] The upper air inlet area is connected to the lower air inlet area via the corresponding upper drying unit, upper air outlet area, corresponding lower drying unit, forming an S-shaped air duct; the upper air outlet area is connected to the lower air outlet area via the corresponding drying unit, lower air inlet area, corresponding lower drying unit, forming an S-shaped air duct. Specifically, the third air inlet area is communicated with the second air inlet area via the first drying area of the corresponding drying unit and the first second air outlet area, forming an S-shaped air duct; at the same time, the third air inlet area is communicated with the second air inlet area via the second drying area of the corresponding drying unit and the second second air outlet area, forming an S-shaped air duct; the second air inlet area is communicated with the first air inlet area via the first drying area of the corresponding drying unit and the first first air outlet area, forming an S-shaped air duct, and at the same time, the second air inlet area is communicated with the first air inlet area via the second drying area of the corresponding drying unit and the second first air outlet area, forming an S-shaped air duct.

[0084] The continuous sterilization positive pressure drying tower of the utility model comprises: a grain inlet, a plurality of grain storage layers, a plurality of drying sections, air ducts on both sides, an intermediate air inlet duct, a plurality of tempering grain storage sections, a discharging layer, legs, a hot air blower, pipelines, etc.

[0085] The material enters the inside of the drying tower from the top of the sterilization drying tower through the grain inlet 801, and the material slowly descends from top to bottom inside the drying tower, passes through the top grain storage layer 800, is shunted by the top partition plate 8022 into the first grain column 910 of the left drying section and the second grain column 802 of the right drying section, reaches the lower tempering grain storage layer 500, and enters the discharging layer 600. Thus, the feeding process of the drying tower ends.

[0086] In one embodiment, the sterilization drying tower is provided with upper and lower two groups of drying sections, including the first hot air inlet 201 of the upper drying section, the first air outlet 202 of the upper drying section, the second hot air inlet 203 of the lower drying section, and the second air outlet 204 of the lower drying section. The drying tower is provided with an intermediate air inlet duct 200, the first air ducts 200 on the left and right sides, and the second air duct 300 on the right. The hot air enters the intermediate air duct of the drying tower from the second hot air inlet 203 of the lower drying section and is discharged from the second air outlet 204 of the lower drying section. The hot air enters the intermediate air duct of the drying tower from the first hot air inlet 201 of the upper drying section and is discharged from the first air outlet 202 of the upper drying section. The hot air temperatures of the two sections can be set separately. The hot air is in full contact with the material, so that the surface temperature of the material rises rapidly, killing the surface germs and achieving the sterilization effect.

[0087] The middle air inlet duct 200 of the sterilization and drying tower is divided into six partitions by partitions. Among them, the air inlet partition one 231, the air inlet partition two 232, and the air inlet partition three 233 divide the air inlet duct of the upper drying section into the first air inlet area one 211, the second air inlet area one 212, and the third air inlet area one 213. The air inlet partition four 234, the air inlet partition five 235, and the air inlet partition six 236 divide the air inlet duct of the lower drying section into the first air inlet area two 214, the second air inlet area two 215, and the third air inlet area two 216. Thus, the structure of the middle air inlet duct is separated and completed.

[0088] The overall left air outlet duct 300 of the sterilization and drying tower is divided into four partitions by partitions. Among them, the air outlet partition one 331 and the air outlet partition two 332 divide the left first air duct 310 of the upper drying section into the first air outlet area one 311 and the second air outlet area one 312. The air outlet partition five 335 and the air outlet partition six 336 divide the left first air duct 310 of the lower drying section into the first air outlet area three 313 and the second air outlet area three 314. Thus, the structure of the left air outlet duct is separated and completed.

[0089] The overall right air outlet duct 300 of the sterilization and drying tower is divided into four partitions by partitions. Among them, the air outlet partition three 333 and the air outlet partition four 334 divide the right second air duct 320 of the upper drying section into the first air outlet area two 321 and the second air outlet area two 322. The air outlet partition seven 337 and the air outlet partition eight 338 divide the right second air duct 320 of the lower drying section into the first air outlet area four 323 and the second air outlet area four 324. Thus, the structure of the right air outlet duct is separated and completed.

[0090] The hot air path of the sterilization and drying tower is as Figure 3 shown. The hot air blower in the upper drying section enters the first air inlet area one 211 from the upper drying section hot air inlet one 201. The hot air passes through the material surface through the angled box assembly, and enters the left first air outlet area one 311 and the right first air outlet area two 321 respectively. Then the hot air continues to pass through the material surface through the angled box assembly, enters the middle second air inlet area one 212. The hot air passes through the material surface through the angled box assembly again, enters the left second air outlet area one 312 and the right second air outlet area two 322 respectively. Finally, the hot air passes through the material surface through the angled box assembly, enters the middle third air inlet area one 213, and the remaining air is discharged from the upper drying section air outlet one 202.

[0091] It can be seen from the hot air path of the sterilization and drying tower that the hot air enters from the upper drying section hot air inlet one 201 and is discharged from the upper drying section air outlet one 202. The hot air passes through the grain layer 8 times in total, and the hot air passes through 8 S-bends. It can increase the contact time and contact area between the high-temperature hot air and the material, effectively utilize the circulation of the hot air, and greatly improve the sterilization efficiency.

[0092] The hot air path of the sterilization and drying tower is as Figure 2As shown in the figure, the hot air blower in the lower drying section sends high-temperature hot air into the first intermediate air inlet area 214 from the second hot air inlet 203 of the lower drying section. The hot air passes through the material surface through the angled box assembly, and enters the first air outlet area 313 on the left and the first air outlet area 323 on the right respectively. Then the hot air continues to pass through the material surface through the angled box assembly and enters the second intermediate air inlet area 215. The hot air passes through the material surface through the angled box assembly again, enters the second air outlet area 314 on the left and the second air outlet area 324 on the right respectively. Finally, the hot air passes through the material surface through the angled box assembly and enters the third intermediate air inlet area 216, and the remaining air is discharged from the second outlet 204 of the lower drying section.

[0093] It can be seen from the hot air path of the sterilization and drying tower that the hot air enters from the second hot air inlet 203 of the lower drying section and is discharged from the second outlet 204 of the lower drying section. The hot air passes through the grain layer 8 times in total, and the hot air passes through 8 S-shaped bends, which can increase the contact time and contact area between the high-temperature hot air and the material, effectively utilize the circulation of the hot air, and greatly improve the sterilization efficiency.

[0094] The two drying sections can increase the sterilization time and improve the sterilization efficiency; it can also achieve temperature zoning by different hot air temperatures sent by the hot air blower, accurately control the temperature, and achieve the best sterilization effect.

[0095] The inside of the sterilization and drying tower is composed of a ventilation angled box assembly 113, and the arrangement of the angled box assembly is as Figure 4 shown. The hot air enters the angled box from the first inlet 201 and the second inlet 203. The material flows downward in an S shape inside the angled box, and the remaining air is discharged from the first outlet 202 and the second outlet 204. The hot air performs high-temperature sterilization on the material surface to achieve the sterilization effect.

[0096] The continuous sterilization and drying tower is composed of several drying sections. A single drying unit 110 of the drying tower is as Figure 5 、 6 shown. The second intermediate air inlet area 215 is in the middle. On both sides adjacent to the second intermediate air inlet area 215 are the first drying area 111 and the second drying area 112 arranged with angled boxes. The hot air enters from the first air inlet area 214, passes through the grain layers on both sides, and is discharged from the first air outlet area 313 and the first air outlet area 323.

[0097] The application effect of the present utility model lies in: for example, when a feed mill sterilizes a large amount of corn, the design concept is that the higher the air temperature, the better, the shorter the heating time, the better, and the lower the temperature inside the corn, the better. Therefore, when designing the sterilization tower, it is necessary to consider that the path of the hot air contacting the material should be long enough, and the hot air quickly exchanges with the material surface in a short time to kill the surface germs. At the same time, the discharge amount can also be operated to control the residence time of the material in the tower. For example, the customer sets the sterilization temperature to 120 °C and the residence time to 5 minutes, or the sterilization temperature to 100 °C and the residence time to 10 minutes. Both of these scenarios can be adjusted in actual operation through the solution of this patent. By precisely controlling the temperature and adjusting the residence time, the optimal sterilization effect can be achieved. The application scenario examples are not limited to this.

[0098] The present utility model is not limited to the above embodiments. Based on the technical solutions disclosed in the present utility model, those skilled in the art can make some substitutions and transformations to some of the technical features without creative labor according to the disclosed technical content, and these substitutions and transformations are all within the protection scope of the present utility model.

Claims

1. Continuous drying tower, characterized by: include: The drying section includes a plurality of drying units arranged from top to bottom; An air inlet duct is arranged in the middle of the drying section; an air inlet baffle is arranged from top to bottom in the air inlet duct, and the air inlet baffle divides the air inlet duct into at least two air inlet areas; an air inlet and an air outlet are arranged on the air inlet duct; An air outlet duct is arranged on both sides of the drying section; an air outlet baffle is arranged from top to bottom in the air outlet duct, and the air outlet baffle divides the air outlet duct into at least two air outlet areas; the air outlet baffle is located between two adjacent air inlet baffles; The upper air inlet area is connected to the lower air inlet area via the corresponding upper drying unit, the upper air outlet area, and the corresponding lower drying unit to form an S-shaped air duct; The upper air outlet area is connected to the lower air inlet area via the corresponding drying unit, the lower air inlet area, the corresponding lower drying unit, and the lower air outlet area to form an S-shaped air duct.

2. The continuous drying tower according to claim 1 is characterized in that: The number of the air inlet baffles is 3, and the 3 air inlet baffles divide the air inlet duct into a first air inlet area, a second air inlet area, and a third air inlet area arranged from bottom to top; the air inlet is arranged on the first air inlet area; the air outlet is arranged on the third air inlet area; The number of the air outlet baffles is 2, and the air outlet baffles divide the air outlet duct into a first air outlet area and a second air outlet area arranged from bottom to top; The third air inlet area is connected to the second air inlet area via the corresponding drying unit and the second air outlet area to form an S-shaped air duct; The second air inlet area is connected to the first air inlet area via the corresponding drying unit and the first air outlet area to form an S-shaped air duct.

3. The continuous drying tower according to claim 2 is characterized in that: The height of the first air inlet area is the same as the height of the third air inlet area; The height of the second air inlet area is greater than the height of the first air inlet area.

4. The continuous drying tower according to claim 2 is characterized in that: The height of the first air outlet area is the same as the height of the second air outlet area.

5. The continuous drying tower according to claim 1 is characterized in that: The inner end of the air outlet baffle is arranged between the corresponding drying units and is inclined, and the outer end of the air outlet baffle is arranged to be inclined upward.

6. The continuous drying tower according to claim 1 is characterized in that: The air inlet baffle is horizontally arranged between corresponding drying units.

7. The continuous drying tower according to claim 1 is characterized in that: A plurality of drying sections are arranged from top to bottom; The air inlet of each drying section is connected to a hot air blower.

8. The continuous drying tower according to claim 1 is characterized in that: The drying unit comprises a first drying area and a second drying area, the first drying area and the second drying area are symmetrically arranged on both sides of the corresponding air inlet area; the outer sides of the first drying area and the second drying area are respectively provided with corresponding air outlet areas; The first drying areas corresponding to the plurality of drying units arranged from top to bottom form a first grain column; The corresponding second drying areas of a plurality of drying units arranged from top to bottom form a second grain column; Angle box components are arranged in the first drying area and the second drying area, and the angle box components are connected with the corresponding air inlet area and air outlet area.

9. The continuous drying tower according to claim 8, characterized in that: The bottom of the bottom drying section is provided with a slow-recovery grain storage layer, a discharge layer, and a lower hopper from top to bottom in sequence; a discharge device and a discharge motor are provided on the discharge layer; A grain storage layer is arranged from bottom to top at the top of the top drying section; a grain inlet is arranged on the top grain storage layer; a top partition plate is arranged in the middle of the bottom grain storage layer for distributing the grain in the grain storage layer to the first grain column and the second grain column.

10. The continuous drying tower according to claim 9, characterized in that: The discharging motor is a variable frequency motor.

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