Ventilation equipment of drying machine

Abstract

The invention discloses ventilation equipment of a drying machine, and relates to the technical field of drying and ventilation, the ventilation equipment comprises a machine box, a first drying chamber, a second drying chamber and a third drying chamber are sequentially formed in the machine box from left to right, a feeding port is formed in the left side of the first drying chamber, and a discharging port is formed in the right side of the third drying chamber; supporting frames are fixedly connected to the inner walls of the front side and the rear side of the first drying chamber, a first conveying belt is fixedly connected to the upper sides of the middles of the supporting frames, the first conveying belt is located between the feeding port and the first material passing port, baffles are connected to the two sides of the first conveying belt through bearings, and the baffles are fixedly connected to the supporting frames. A support is fixedly connected between the baffles, a first gravity sensor is fixedly connected to the support, and the contact point of the first gravity sensor is in direct contact with the bottom side of the upper belt face of the first conveying belt.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drying ventilation technology, in particular to a ventilation equipment of a drying machine. BACKGROUND

[0002] Microwave drying is a drying method using electromagnetic waves as a heating source and the material itself as a heating body. The core of the microwave drying equipment is a microwave generator. Currently, the frequency of microwave drying is mainly 2450 MHz, which is mainly used in the drying of chemical industry, food industry, agricultural and sideline products industry, wood industry, building material industry, paper industry, and can also be used for sterilization of food, agricultural and sideline products, etc. In traditional drying processes, in order to improve the drying speed, the external temperature needs to be increased and the temperature difference gradient needs to be increased. However, this easily causes the phenomenon of external scorching and internal generation. However, when using microwave heating, heat can uniformly penetrate regardless of the shape of the material, and can produce puffing effect, which is beneficial to crushing. Under the action of microwave, the drying rate of the material tends to be consistent, and the heating is uniform. Moreover, the microwave drying technology does not affect the color, aroma, taste and organization structure of the dried material, and the effective components are not easily decomposed and destroyed.

[0003] During microwave drying, the steam is usually discharged by an exhaust fan. However, since the moisture level in the drying machine cannot be known, the steam in the drying machine cannot be effectively discharged.

[0004] Therefore, it is necessary to design a drying machine ventilation equipment which has strong practicability and can effectively discharge steam. SUMMARY

[0005] The present application aims to provide a drying machine ventilation equipment to solve the problems in the background art.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme: a drying machine ventilation equipment, comprising a machine box, wherein the machine box is provided with a first drying chamber, a second drying chamber and a third drying chamber from left to right, a feeding port is provided on the left side of the first drying chamber, and a discharging port is provided on the right side of the third drying chamber. The first drying chamber and the second drying chamber are provided with a first material passing port, the first drying chamber is communicated with the second drying chamber through the first material passing port, the second drying chamber and the third drying chamber are provided with a second material passing port, and the second drying chamber is communicated with the third drying chamber through the second material passing port. The inner wall of the left side of the first drying chamber is fixedly connected with an input conveying belt, and the inner wall of the right side of the third drying chamber is fixedly connected with an output conveying belt. The microwave generator is fixedly connected between the inner walls of the left and right sides of the first drying chamber and is located directly above the first conveying belt. The front and back sides of the first drying chamber, the second drying chamber and the third drying chamber are fixedly connected with ventilators, and the ventilators are respectively connected with the outside through the inner walls of the first drying chamber, the second drying chamber and the third drying chamber.

[0007] According to the above technical scheme, the left side of the first drying chamber is provided with an input conveying belt, and the right side of the third drying chamber is provided with an output conveying belt.

[0008] According to the above technical scheme, one side of the input conveying belt and the output conveying belt is fixedly connected with a driving motor one, and the output end of the driving motor one is fixedly connected with a transmission shaft through the frame of the conveying belt.

[0009] According to the above technical scheme, the transmission shaft at one end of the first conveying belt is fixedly connected with a driving motor two through the baffle, and the driving motor two is fixedly connected with the support frame.

[0010] According to the above technical scheme, the middle upper side of the support frame in the second drying chamber is fixedly connected with a second conveying belt, and the second conveying belt is located between the first material outlet and the second material outlet.

[0011] According to the above technical scheme, the middle upper side of the support frame in the third drying chamber is fixedly connected with a third conveying belt, and the third conveying belt is located between the second material outlet and the discharge outlet.

[0012] According to the above technical scheme, the outer side of the case is fixedly connected with a control box, and the driving motor one, the driving motor two, the microwave generator, the gravity sensor one, the gravity sensor two, the gravity sensor three and the ventilator are signal connected with the control box.

[0013] According to the above technical scheme, the use method of the ventilation equipment of the drying machine is as follows: S1: Start the input conveyor belt without affecting the transmission and drying speed, the input conveyor belt transmits the material into the feeding port, at the same time, the driving motor two of the first conveyor belt is started to drive the first conveyor belt to rotate, the material is conveyed from the left side of the input conveyor belt to the first conveyor belt, when the gravity sensor one detects the gravity of the material, the first conveyor belt stops running; S2: The dehydration amount of each drying chamber within a certain time when the microwave generator and the ventilator run at the standard power is T; When the water content of the material is S>3T, it indicates that the dehydration amount of each drying chamber needs to be greater than T, the microwave generator and the ventilator in the first drying chamber are controlled to increase the power to dry the material; S3: During the drying process, when the gravity sensor one detects that the weight of the material is reduced by S / 3, the driving motor two of the first conveyor belt and the second conveyor belt is controlled to run, so that the material on the first conveyor belt is conveyed to the second conveyor belt, when the gravity sensor two detects the gravity of the material, the driving motor two of the first conveyor belt and the second conveyor belt is controlled to stop running, at the same time, the next material is conveyed to the first conveyor belt by the input conveyor belt, and the new material is just above the gravity sensor one, the gravity sensor one transmits data to the control box after detecting the weight of the material, and the control box analyzes the data; S4: When the control box calculates that the water content of the material in the first drying chamber is still greater than 3T, the control box controls the microwave generator and the ventilator in the first drying chamber to continue running at a power greater than the standard power, when the gravity sensor one detects that the material is reduced by S / 3, the first conveyor belt, the second conveyor belt and the third conveyor belt are started to convey the material to the second conveyor belt, when the gravity sensor two detects the gravity of the material, the first conveyor belt, the second conveyor belt and the third conveyor belt stop running, at this time, the original material in the second drying chamber completes the drying of S / 3 water content, is conveyed to the third drying chamber and is above the gravity sensor three for drying, the microwave generator and the ventilator in the second drying chamber continue to run at a power greater than the standard power; S5: When the gravity sensor two detects that the weight of the material is reduced by S / 3, the second conveyor belt and the third conveyor belt are started to convey the material to the third conveyor belt, when the gravity sensor three detects the weight of the material, the second conveyor belt and the third conveyor belt stop running, at this time, the original material in the third drying chamber completes the drying of S / 3 water content and is conveyed to the output conveyor belt through the discharge port; S6: The microwave generator and the ventilator in the third drying chamber continue to run at a power greater than the standard power, when the gravity sensor three detects that the weight of the material is reduced by S / 3, the third conveyor belt is started to convey the material to the output conveyor belt for output; According to the above technical scheme, the use method of the ventilation equipment of the drying machine: In S2, when the control box calculates that the moisture content of the material is <3T, the box controls the microwave generator and fan in the first drying chamber to resume the standard power operation. After the material is dried at the standard power, the first, second and third conveyor belts are started to transport the material to the second conveyor belt. When the gravity sensor detects the gravity of the material, the first, second and third conveyor belts are stopped. At this time, the raw material in the second drying chamber has completed the drying of S / 3 moisture content and has been transported to the third drying chamber and is above the gravity sensor for drying. The control box then controls the microwave generator and fan in the second drying chamber to resume the standard power operation. After the material is dried at standard power, the second and third conveyor belts are started to transport the material to the third conveyor belt. After the gravity sensor detects the weight of the material, the second and third conveyor belts stop running. At this time, the raw material in the third drying chamber has completed the drying of S / 3 moisture content and is transported to the output conveyor belt through the discharge port. The microwave generator and fan in the third drying chamber are restored to standard power operation. After the material is dried at standard power, the third conveyor belt is started to transport the material to the output conveyor belt for removal.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention can quickly dry materials by setting up a first drying chamber, a second drying chamber and a third drying chamber without affecting the material conveying; The dryer is equipped with three gravity sensors to measure the moisture content of the material, thereby controlling the drying intensity and dehumidification intensity of the dryer. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall orthogonal sectional structure of the present invention; Figure 2 This is a schematic diagram of the overall orthogonal sectional structure of the present invention; Figure 3 This is a schematic cross-sectional view of the overall side structure of the present invention; Figure 4 This is the invention Figure 3 A magnified schematic diagram of the local structure of region A; Figure 5 This is the invention Figure 3 A magnified schematic diagram of the local structure of region B; Figure 6 This is the invention Figure 3A local enlarged structural schematic view of the C area; In the figure: 1, cabinet; 2, first drying chamber; 3, second drying chamber; 4, third drying chamber; 5, feeding port; 6, input conveyor belt; 7, discharge port; 8, output conveyor belt; 9, driving motor one; 10, first material passing port; 11, support frame; 12, first conveyor belt; 13, support; 14, gravity sensor one; 15, microwave generator; 16, ventilator; 17, second conveyor belt; 18, gravity sensor two; 19, third conveyor belt; 20, gravity sensor three; 21, control box; 22, second material passing port; 23, baffle; 24, driving motor two. DETAILED DESCRIPTION

[0016] The following embodiments merely illustrate some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0017] Please refer to Figures 1-6 The present application provides a technical solution: a ventilation equipment of a drying machine, comprising a cabinet 1, the cabinet 1 is sequentially provided with a first drying chamber 2, a second drying chamber 3 and a third drying chamber 4 from left to right, which are all used for rapidly drying materials, the first drying chamber 2 is provided with a feeding port 5 on the left side, the first drying chamber 2 is provided with an input conveyor belt 6 on the left side, the input conveyor belt 6 is used for feeding materials from the feeding port 5 into the first drying chamber 2, the third drying chamber 4 is provided with a discharge port 7 on the right side, and the third drying chamber 4 is provided with an output conveyor belt 8 on the right side, which is used for conveying the dried materials out of the cabinet 1; Reference Figure 1 One side of the input conveyor belt 6 and the output conveyor belt 8 is fixedly connected with a driving motor one 9, and the output end of the driving motor one 9 is fixedly connected with a transmission shaft penetrating through the frame of the conveyor belt; Reference Figure 2 The first drying chamber 2 and the second drying chamber 3 are provided with a first material passing port 10, the first drying chamber 2 is communicated with the second drying chamber 3 through the first material passing port 10, and the second drying chamber 3 and the third drying chamber 4 are provided with a second material passing port 22, the second drying chamber 3 is communicated with the third drying chamber 4 through the second material passing port 22; Reference Figure 3 Reference Figure 4The inner walls on the front and back sides of the first drying chamber 2, the second drying chamber 3 and the third drying chamber 4 are fixedly connected with support frames 11, the upper middle side of the support frame 11 in the first drying chamber 2 is fixedly connected with a first conveying belt 12, the first conveying belt 12 is located between the feeding port 5 and the material passing port 10, and is used for conveying the material from the feeding port 5 into the first drying chamber 2 and conveying the material out of the first drying chamber 2, the front and back sides of the first conveying belt 12 are bearing-connected with baffle plates 23, the baffle plates 23 are fixedly connected with the support frames 11, the baffle plates 23 are fixedly connected with a support 13, the support 13 is fixedly connected with a gravity sensor 14, the contact point of the gravity sensor 14 directly contacts the bottom side of the belt surface of the first conveying belt 12, and the gravity sensor 14 is used for measuring the weight of the material; With reference to Figure 2 The transmission shaft at one end of the first conveying belt 12 is fixedly connected with a driving motor 24, the driving motor 24 is fixedly connected with the support frame 11, and the driving motor 24 is used for driving the first conveying belt 12 to run; With reference to Figure 1 The inner walls on the left and right sides of the first drying chamber 2 are fixedly connected with a microwave generator 15, the microwave generator 15 is located directly above the first conveying belt 12, and the microwave generator 15 is used for microwave drying of the material; The front and back sides of the first drying chamber 2, the second drying chamber 3 and the third drying chamber 4 are fixedly connected with ventilators 16, the ventilators 16 respectively penetrate the inner walls of the first drying chamber 2, the second drying chamber 3 and the third drying chamber 4 and are in communication with the outside, and the ventilators 16 are used for conveying water vapor in the drying chambers out of the drying chambers; With reference to Figure 3 With reference to Figure 5 The upper middle side of the support frame 11 in the second drying chamber 3 is fixedly connected with a second conveying belt 17, the second conveying belt 17 is located between the material passing port 10 and the material passing port 22, and the second conveying belt 17 is used for conveying the material from the first drying chamber 2 to the second drying chamber 3, and the support 13 in the second drying chamber 3 is fixedly connected with a gravity sensor 18; With reference to Figure 6 The upper middle side of the support frame 11 in the third drying chamber 4 is fixedly connected with a third conveying belt 19, the third conveying belt 19 is located between the material passing port 22 and the discharging port 7, and the third conveying belt 19 is used for conveying the material from the second drying chamber 3 to the third drying chamber 4 and conveying the material from the third drying chamber 4 out of the third drying chamber 4 through the discharging port 7 and onto the output conveying belt 8, and the support 13 in the third drying chamber 4 is fixedly connected with a gravity sensor 20; With reference to Figure 1 One side of the cabinet 1 is fixedly connected with a control box 21, the driving motor 9, the driving motor 24, the microwave generator 15, the gravity sensor 14, the gravity sensor 18, the gravity sensor 20 and the ventilator 16 are in signal connection with the control box 21.

[0018] In the embodiment, the weight of the material is the same in the dry state and the moisture content is different in the wet state, the input conveyor 6 is started, the input conveyor 6 transmits the material into the feeding port 5, the driving motor two 24 of the first conveyor 12 is started to drive the first conveyor 12 to rotate, the material is conveyed from the left side of the input conveyor 6 to the first conveyor 12, when the gravity sensor one 14 detects the gravity of the material, the first conveyor 12 stops running, the gravity sensor one 14 transmits the data of the weight of the material to the control box 21, the control box 21 compares the data with the weight of the material in the dry state, and calculates the moisture content S of the material; The dehydration amount of the microwave generator 15 and the ventilator 16 in each drying chamber is T under the standard power within a certain time; When the moisture content S of the material is greater than 3T, it is indicated that the dehydration amount of each drying chamber needs to be greater than T, the microwave generator 15 and the ventilator 16 in the first drying chamber 2 are controlled to increase the power to increase the dehydration amount, and the increased power values of the microwave generator 15 and the ventilator 16 are positively correlated with the difference when the moisture content of the material is greater than 3T; During the drying process, when the gravity sensor one 14 detects that the weight of the material is reduced by S / 3, the first conveyor 12 and the second conveyor 17 are controlled to run, so that the material on the first conveyor 12 is conveyed to the second conveyor 17, when the gravity sensor two 18 detects the gravity of the material, the driving motor two 24 of the first conveyor 12 and the second conveyor 17 is stopped, at the same time, the input conveyor 6 has conveyed the next material to the first conveyor 12, and the new material is just located above the gravity sensor one 14, the gravity sensor one 14 transmits the data to the control box 21 after detecting the weight of the material, and the control box 21 analyzes the data; Case one: when the control box 21 calculates that the moisture content of the material in the first drying chamber 2 is still greater than 3T, the control box 21 controls the microwave generator 15 and the ventilator 16 in the first drying chamber 2 to continue running at a power greater than the standard power, when the gravity sensor one 14 detects that the material is reduced by S / 3, the first conveyor 12, the second conveyor 17 and the third conveyor 19 are started to convey the material to the second conveyor 17, when the gravity sensor two 18 detects the gravity of the material, the first conveyor 12, the second conveyor 17 and the third conveyor 19 stop running, at this time, the original material in the second drying chamber 3 completes the drying of S / 3 moisture content, is conveyed to the third drying chamber 4 and is dried above the gravity sensor three 20, the microwave generator 15 and the ventilator 16 in the second drying chamber 3 continue to run at a power greater than the standard power; When the gravity sensor two 18 detects the weight of the material minus S / 3, the second conveyor belt 17 and the third conveyor belt 19 are started to transport the material to the third conveyor belt 19, and when the gravity sensor three 20 detects the weight of the material, the second conveyor belt 17 and the third conveyor belt 19 stop running, at this time, the original material in the third drying chamber 4 completes the drying of S / 3 moisture content, and is transported to the output conveyor belt 8 through the discharge port 7. The microwave generator 15 and the ventilator 16 in the third drying chamber 4 are controlled to continue running at a state greater than the standard power, and when the gravity sensor three 20 detects that the weight of the material decreases by S / 3, the third conveyor belt 19 is started to transport the material to the output conveyor belt 8.

[0019] Case two: when the control box 21 calculates that the moisture content of the material is S<3T, the microwave generator 15 and the ventilator 16 in the first drying chamber 2 are controlled to resume the running state of the standard power, and when the material completes drying at the standard power, the first conveyor belt 12, the second conveyor belt 17 and the third conveyor belt 19 are started to transport the material to the second conveyor belt 17, and when the gravity sensor two 18 detects the gravity of the material, the first conveyor belt 12, the second conveyor belt 17 and the third conveyor belt 19 stop running, at this time, the original material in the second drying chamber 3 completes the drying of S / 3 moisture content, has been transported to the third drying chamber 4 and is drying above the gravity sensor three 20, and the microwave generator 15 and the ventilator 16 in the second drying chamber 3 are controlled to resume the running state of the standard power. When the material completes drying at the standard power, the second conveyor belt 17 and the third conveyor belt 19 are started to transport the material to the third conveyor belt 19, and when the gravity sensor three 20 detects the weight of the material, the second conveyor belt 17 and the third conveyor belt 19 stop running, at this time, the original material in the third drying chamber 4 completes the drying of S / 3 moisture content, and is transported to the output conveyor belt 8 through the discharge port 7. The microwave generator 15 and the ventilator 16 in the third drying chamber 4 are controlled to resume the running state of the standard power, and when the material completes drying at the standard power, the third conveyor belt 19 is started to transport the material to the output conveyor belt 8.

[0020] A method for using a ventilation device of a drying machine: S1: under the premise of not affecting the transmission and drying speed, the input conveyor belt 6 is started to transport the material into the feeding port 5, and the driving motor two 24 on the first conveyor belt 12 is started to drive the first conveyor belt 12 to rotate, and the material is transported from the left side of the input conveyor belt 6 to the first conveyor belt 12, and when the gravity sensor one 14 detects the gravity of the material, the first conveyor belt 12 stops running. S2: set the amount of dehydration of each drying chamber within a certain time when the microwave generator 15 and the ventilator 16 are running at standard power, and the amount of dehydration is T; When the water content of the material is S>3T, it means that the amount of dehydration of each drying chamber needs to be greater than T, and the microwave generator 15 and the ventilator 16 in the first drying chamber 2 are controlled to increase the power to dry the material; S3: during the drying process, when the gravity sensor 14 detects that the weight of the material has decreased by S / 3, the driving motor 24 of the first conveying belt 12 and the second conveying belt 17 is controlled to run, so that the material on the first conveying belt 12 is transported to the second conveying belt 17, and when the gravity sensor 18 detects the gravity of the material, the driving motor 24 of the first conveying belt 12 and the second conveying belt 17 is controlled to stop running, at the same time, the input conveying belt 6 has transported the next material to the first conveying belt 12, and the new material is just located above the gravity sensor 14, the gravity sensor 14 transmits data to the control box 21 after detecting the weight of the material, and the control box 21 analyzes the data; S4: when the control box 21 calculates that the water content of the material in the first drying chamber 2 is still greater than 3T, the control box 21 controls the microwave generator 15 and the ventilator 16 in the first drying chamber 2 to continue running at a power greater than the standard power, and when the gravity sensor 14 detects that the weight of the material has decreased by S / 3, the first conveying belt 12, the second conveying belt 17 and the third conveying belt 19 are started to transport the material to the second conveying belt 17, and when the gravity sensor 18 detects the gravity of the material, the first conveying belt 12, the second conveying belt 17 and the third conveying belt 19 are stopped, at this time, the original material in the second drying chamber 3 completes the drying of S / 3 water content, has been transported to the third drying chamber 4 and is above the gravity sensor 20 for drying, and the microwave generator 15 and the ventilator 16 in the second drying chamber 3 continue to run at a power greater than the standard power; S5: when the gravity sensor 18 detects that the weight of the material has decreased by S / 3, the second conveying belt 17 and the third conveying belt 19 are started to transport the material to the third conveying belt 19, and when the gravity sensor 20 detects the weight of the material, the second conveying belt 17 and the third conveying belt 19 stop running, at this time, the original material in the third drying chamber 4 completes the drying of S / 3 water content, and is transported to the output conveying belt 8 through the discharge port 7; S6: the microwave generator 15 and the ventilator 16 in the third drying chamber 4 are controlled to continue running at a power greater than the standard power, and when the gravity sensor 20 detects that the weight of the material has decreased by S / 3, the third conveying belt 19 is started to transport the material to the output conveying belt 8 for output; S41: When the control box 21 calculates that the moisture content of the material S < 3T, the microwave generator 15 and the ventilator 16 in the first drying chamber 2 are controlled to resume the standard power operation state. When the material is dried under the standard power, the first conveyor belt 12, the second conveyor belt 17 and the third conveyor belt 19 are started to transport the material to the second conveyor belt 17. When the gravity sensor two 18 detects the gravity of the material, the first conveyor belt 12, the second conveyor belt 17 and the third conveyor belt 19 are stopped. At this time, the original material in the second drying chamber 3 is dried to the moisture content of S / 3, and is transported to the third drying chamber 4 and above the gravity sensor three 20 for drying. The microwave generator 15 and the ventilator 16 in the second drying chamber 3 are controlled to resume the standard power operation state; S51: When the material is dried under the standard power, the second conveyor belt 17 and the third conveyor belt 19 are started to transport the material to the third conveyor belt 19. When the gravity sensor three 20 detects the gravity of the material, the second conveyor belt 17 and the third conveyor belt 19 are stopped. At this time, the original material in the third drying chamber 4 is dried to the moisture content of S / 3, and is transported to the output conveyor belt 8 through the discharge port 7; S61: The microwave generator 15 and the ventilator 16 in the third drying chamber 4 are controlled to resume the standard power operation state. When the material is dried under the standard power, the third conveyor belt 19 is started to transport the material to the output conveyor belt 8.

[0021] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0022] Finally, it should be noted that the above-described embodiments are merely possible implementations of the present application, but not to be used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified or replaced by other technically equivalent technical solutions by those skilled in the art, and these modifications or replacements shall fall within the scope of the present application. Any modification, equivalent replacement, improvement, and the like made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A ventilation device for a dryer, comprising a casing (1), characterized in that: The machine casing (1) has a first drying chamber (2), a second drying chamber (3) and a third drying chamber (4) arranged from left to right. The first drying chamber (2) has a feeding port (5) on the left side and the third drying chamber (4) has a discharge port (7) on the right side. The first drying chamber (2) and the second drying chamber (3) are provided with a feed inlet 1 (10), the first drying chamber (2) is connected to the second drying chamber (3) through the feed inlet 1 (10), and the second drying chamber (3) and the third drying chamber (4) are provided with a feed inlet 2 (22), the second drying chamber (3) is connected to the third drying chamber (4) through the feed inlet 2 (22); Support frames (11) are fixedly connected to the inner walls of the front and rear sides of the first drying chamber (2), the second drying chamber (3), and the third drying chamber (4). A first conveyor belt (12) is fixedly connected to the upper middle side of the support frame (11) in the first drying chamber (2). The first conveyor belt (12) is located between the feeding port (5) and the first material outlet (10). Baffles (23) are connected to the bearings on the front and rear sides of the first conveyor belt (12). The baffles (23) are fixedly connected to the support frame (11). A bracket (13) is fixedly connected between the baffles (23). A gravity sensor (14) is fixedly connected to the bracket (13). The contact point of the gravity sensor (14) is in direct contact with the bottom side of the belt surface of the first conveyor belt (12). A microwave generator (15) is fixedly connected between the inner walls of the left and right sides of the first drying chamber (2), and the microwave generator (15) is located directly above the first conveyor belt (12). Ventilation fans (16) are fixedly connected to the front and rear sides of the first drying chamber (2), the second drying chamber (3) and the third drying chamber (4). The ventilation fans (16) pass through the inner walls of the first drying chamber (2), the second drying chamber (3) and the third drying chamber (4) respectively and communicate with the outside.

2. The ventilation device for a dryer according to claim 1, characterized in that: An input conveyor belt (6) is provided on the left side of the first drying chamber (2), and an output conveyor belt (8) is provided on the right side of the third drying chamber (4).

3. The ventilation equipment for a dryer according to claim 2, characterized in that: One side of each of the input conveyor belt (6) and the output conveyor belt (8) is fixedly connected to a drive motor (9), and the output end of the drive motor (9) passes through the frame of the conveyor belt and is fixedly connected to the transmission shaft.

4. The ventilation device for a dryer according to claim 3, characterized in that: The drive shaft at one end of the first conveyor belt (12) passes through the baffle (23) and is fixedly connected to the second drive motor (24), which is fixedly connected to the support frame (11).

5. The ventilation device for a dryer according to claim 4, characterized in that: The second conveyor belt (17) is fixedly connected to the upper middle side of the support frame (11) in the second drying chamber (3). The second conveyor belt (17) is located between the first material inlet (10) and the second material inlet (22). The second gravity sensor (18) is fixedly connected to the bracket (13) in the second drying chamber (3).

6. The ventilation device for a dryer according to claim 5, characterized in that: The third conveyor belt (19) is fixedly connected to the upper middle side of the support frame (11) in the third drying chamber (4). The third conveyor belt (19) is located between the material inlet (22) and the discharge outlet (7). The gravity sensor (20) is fixedly connected to the bracket (13) in the third drying chamber (4).

7. The ventilation device for a dryer according to claim 6, characterized in that: A control box (21) is fixedly connected to one side of the outer side of the chassis (1). The drive motor (9), drive motor (24), microwave generator (15), gravity sensor (14), gravity sensor (28), gravity sensor (3) and ventilator (16) are all connected to the control box (21) via signal.

8. The method of using the ventilation equipment of a dryer according to claim 7, characterized in that: S1: Without affecting the transmission and drying speed, start the input conveyor belt (6), the input conveyor belt (6) will transport the material into the feed port (5), and at the same time start the second drive motor (24) on the first conveyor belt (12) to drive the first conveyor belt (12) to rotate. The material is transported from the left side of the input conveyor belt (6) to the first conveyor belt (12). When the gravity sensor (14) detects the gravity of the material, the first conveyor belt (12) stops running. S2: Set the amount of dehydration of the microwave generator (15) and the fan (16) at standard power for a certain period of time in each drying chamber to be T; When the moisture content S of the material is greater than 3T, it means that the dehydration of each drying chamber needs to be greater than T. The microwave generator (15) and the fan (16) in the first drying chamber (2) are controlled to increase their power to dry the material. S3: During the drying process, when gravity sensor 1 (14) detects that the weight of the material has decreased by S / 3, it controls the second drive motor (24) of the first conveyor belt (12) and the second conveyor belt (17) to run, so that the material on the first conveyor belt (12) is transported to the second conveyor belt (17). When gravity sensor 2 (18) detects the weight of the material, it controls the second drive motor (24) of the first conveyor belt (12) and the second conveyor belt (17) to stop running. At the same time, it inputs that the conveyor belt (6) has transported the next material to the first conveyor belt (12), and the new material is just on gravity sensor 1 (14). After detecting the weight of the material, gravity sensor 1 (14) transmits data to the control box (21), and the control box (21) analyzes the data. S4: When the control box (21) calculates that the moisture content of the material in the first drying chamber (2) is still greater than 3T, the control box (21) controls the microwave generator (15) and the ventilator (16) in the first drying chamber (2) to continue to operate at a power greater than the standard power. When the gravity sensor (14) detects that the material has reduced by S / 3, the first conveyor belt (12), the second conveyor belt (17) and the third conveyor belt (19) are started to transport the material to the second conveyor belt (17). When the gravity sensor (28) detects the gravity of the material, the first conveyor belt (12), the second conveyor belt (17) and the third conveyor belt (19) are stopped. At this time, the original material in the second drying chamber (3) has completed the drying of S / 3 moisture content and has been transported to the third drying chamber (4) and is above the gravity sensor (20) for drying. The control box (21) controls the microwave generator (15) and the ventilator (16) in the second drying chamber (3) to continue to operate at a power greater than the standard power. S5: When gravity sensor 2 (18) detects that the weight of the material is reduced by S / 3, the second conveyor belt (17) and the third conveyor belt (19) are started to transport the material to the third conveyor belt (19). After gravity sensor 3 (20) detects the weight of the material, the second conveyor belt (17) and the third conveyor belt (19) stop running. At this time, the raw material in the third drying chamber (4) has completed the drying of S / 3 moisture content and is transported to the output conveyor belt (8) through the discharge port (7). S6: Control the microwave generator (15) and the ventilator (16) in the third drying chamber (4) to continue to operate at a power greater than the standard power. When the gravity sensor three (20) detects that the weight of the material has decreased by S / 3, start the third conveyor belt (19) to transport the material to the output conveyor belt (8) for delivery.

9. The method of using the ventilation equipment of a dryer according to claim 8, characterized in that... In S2, when the control box (21) calculates that the moisture content of the material is <3T, the box controls the microwave generator (15) and the ventilator (16) in the first drying chamber (2) to return to the standard power operation state. After the material is dried under the standard power state, the first conveyor belt (12), the second conveyor belt (17), and the third conveyor belt (19) are started to transport the material to the second conveyor belt (17). When the gravity sensor (18) detects the gravity of the material, the first conveyor belt (12), the second conveyor belt (17), and the third conveyor belt (19) are stopped. At this time, the original material in the second drying chamber (3) has completed the drying of S / 3 moisture content and has been transported to the third drying chamber (4) and is above the gravity sensor (20) for drying. The control box controls the microwave generator (15) and the ventilator (16) in the second drying chamber (3) to return to the standard power operation state. After the material is dried under standard power conditions, the second conveyor belt (17) and the third conveyor belt (19) are started to transport the material to the third conveyor belt (19). After the gravity sensor (20) detects the weight of the material, the second conveyor belt (17) and the third conveyor belt (19) stop running. At this time, the raw material in the third drying chamber (4) is dried to a moisture content of S / 3 and is transported to the output conveyor belt (8) through the discharge port (7). The microwave generator (15) and the ventilator (16) in the third drying chamber (4) are restored to standard power operation. After the material is dried under standard power conditions, the third conveyor belt (19) is started to transport the material to the output conveyor belt (8) for delivery.

Images