Double-drying-tunnel and double-circulation drying machine

Abstract

The utility model relates to the technical field of drying equipment, in particular to a double-drying-tunnel double-circulation drying machine which comprises a machine shell, a partition plate, a heat source, a first fan screen, a second fan screen and a material conveying mechanism. The partition plate, the heat source, the first fan screen and the second fan screen are arranged on the inner side of the machine shell and located above the material conveying mechanism. A first drying channel and a second drying channel are formed between the partition plate and the machine shell. By arranging a partition plate, a heat source, a first fan screen, a second fan screen, a first shutter moisture discharging opening, a second shutter moisture discharging opening and a material conveying mechanism, materials can be continuously fed through a feeding opening in the operation process of the equipment, the equipment can continuously work, the materials are subjected to double-circulation hot air drying through double drying channels in the forward pushing process, and the drying efficiency is improved. According to the drying device, materials are fully and uniformly dried, moisture is rapidly discharged, the drying efficiency and the drying effect are improved, and the problems existing in existing drying equipment are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying equipment technical field, concretely is a double drying channel double cycle drying machine. BACKGROUND

[0002] More and more agricultural products are planted in large areas, and the biggest problem during harvesting is the drying of agricultural products. The drying method of using the sun for drying agricultural products such as rice, pepper and peanuts is not suitable for the development of modern rural areas because of the limited space and low drying efficiency. Therefore, some drying equipment for drying agricultural products appears on the market, but these drying equipment has the problem of uneven heating of materials during the drying process of materials, and can only dry the materials in batches, which is not efficient. SUMMARY

[0003] The utility model discloses a double drying channel double cycle drying machine, which aims to solve the problems of uneven drying of materials and low drying efficiency in traditional drying equipment.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a double drying channel double cycle drying machine, which comprises a casing, a partition, a heat source, a first fan screen, a second fan screen and a material conveying mechanism. The material conveying mechanism is arranged at the bottom of the casing. The partition, the heat source, the first fan screen and the second fan screen are arranged on the inner side of the casing and above the material conveying mechanism. The partition is located in the middle of the casing and extends along the length direction of the casing. The first drying channel and the second drying channel are formed between the partition and the casing. The first drying channel and the second drying channel are located on both sides of the partition and above the material conveying mechanism. The first fan screen is arranged at one end of the first drying channel, and the second fan screen is arranged at one end of the second drying channel. The first fan screen and the second fan screen are separated by the partition. The heat source is arranged at the opening of one end of the first drying channel and the second drying channel. A plurality of first louver exhaust ports and a plurality of second louver exhaust ports are arranged on the opposite sides of the casing. The first louver exhaust ports are in communication with the first drying channel, and the second louver exhaust ports are in communication with the second drying channel. The first fan screen comprises a plurality of first fans, and the second fan screen comprises a plurality of second fans. The first fans and the second fans are arranged to have opposite air directions and to have a timing conversion air direction. The heat source and the inner wall of one end of the casing form a front air duct, and the other end of the partition away from the heat source and the other end of the inner wall of the casing form a rear air duct. The first drying channel, the front air duct, the second drying channel and the rear air duct form a closed loop for the circulation of hot air.

[0005] On the basis of the above technical scheme, the utility model can also be improved as follows:

[0006] As a further improvement of the above technical solution, the material conveying mechanism comprises two conveying rollers arranged opposite to each other and a chain plate connected between the two conveying rollers, an angle iron is arranged on the chain plate, the conveying roller at one end of the chain plate is connected with the motor through a belt, and the first drying channel and the second drying channel are located on the two sides of the partition plate and above the chain plate.

[0007] As a further improvement of the above technical solution, the heat source is located at one end of the partition plate and is spaced apart from the first fan screen and the second fan screen by the same distance.

[0008] As a further improvement of the above technical solution, the plurality of first fans are arranged in an array in the first drying channel, the plurality of second fans are arranged in an array in the second drying channel, and the first fans and the second fans are axial flow fans.

[0009] As a further improvement of the above technical solution, the heat source is a steam heat exchanger, an electric heating pipe or an air energy condenser.

[0010] As a further improvement of the above technical solution, one end of the cabinet is provided with a feeding port and a plurality of fresh air inlets, the plurality of fresh air inlets are communicated with the front air duct inside the cabinet, a feeding door is arranged at the feeding port, and a plurality of fresh air doors are arranged at the plurality of fresh air inlets.

[0011] As a further improvement of the above technical solution, a fresh air unit is arranged inside one end of the cabinet, the fresh air unit is arranged close to the fresh air doors and comprises a plurality of fresh air fans, and the plurality of fresh air fans are located above the chain plate.

[0012] As a further improvement of the above technical solution, the other end of the cabinet is provided with a discharging port and a discharging door, the discharging door is arranged above the chain plate, the discharging port is arranged below the discharging door, and a strip-shaped silica gel plate is nailed below the discharging door to block air.

[0013] As a further improvement of the above technical solution, a PLC controller is arranged on the outer wall of the cabinet, the PLC controller is electrically connected with the heat source, the first fans, the second fans, the fresh air fans, the motor and the fresh air doors, and a humidity sensor is arranged at each of the first louvered wet air outlet and the second louvered wet air outlet.

[0014] The double-drying-channel double-circulation drying machine has the advantages that the double-drying-channel double-circulation drying machine can continuously feed materials through the feeding port during the operation of the equipment, the equipment can continuously work, the materials can be fully and uniformly dried and rapidly dehumidified through the double-drying-channel double-circulation hot air drying during the forward pushing of the materials, the drying efficiency and the drying effect are improved, the problems of the existing drying equipment are solved, and the double-drying-channel double-circulation drying machine has a wide market application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further explained in connection with the drawings and embodiments.

[0016] Figure 1 is the structure diagram of double drying channel double circulation drying machine provided by the preferred embodiment of the utility model;

[0017] Figure 2 is Figure 1 the front view of double drying channel double circulation drying machine in

[0018] Figure 3 is Figure 1 the sectional view along the overhead direction of double drying channel double circulation drying machine in

[0019] Figure 4 is Figure 2 the schematic diagram of the front side plate of the casing in

[0020] In the figure: 1, the casing;101, the left side plate;102, the right side plate;103, the front side plate;104, the back side plate;11, the first drying channel;12, the second drying channel;13, the first louver exhaust port;14, the second louver exhaust port;15, the front air duct;16, the rear air duct;2, the partition;3, the heat source;4, the first fan screen;41, the first fan;5, the second fan screen;51, the second fan;61, the fresh air door;62, the feeding door;71, the discharging door;72, the discharging port;73, the silica gel plate;8, the fresh air unit;81, the fresh air fan;9, the material conveying mechanism;91, the conveying roller;93, the chain plate;94, the angle iron;95, the belt;96, the motor;10, the PLC controller. DETAILED DESCRIPTION

[0021] The utility model is further explained in connection with the drawings and embodiments, these drawings are all simplified schematic diagram, just with the schematic way the basic structure of the utility model is explained, therefore it just shows the constitution related with the utility model.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1 to 4 As shown, a preferred embodiment of the present invention provides a dual-drying-tunnel dual-circulation dryer, including a casing 1, a partition 2, a heat source 3, a first fan screen 4, a second fan screen 5, and a material conveying mechanism 9. The material conveying mechanism 9 is provided at the bottom of the casing 1, and the partition 2, the heat source 3, the first fan screen 4, and the second fan screen 5 are located inside the casing 1 and above the material conveying mechanism 9.

[0025] The material conveying mechanism 9 is used to push materials forward. It includes two conveying rollers 91 arranged opposite each other and a chain plate 93 connecting the two conveying rollers 91. An angle iron 94 is welded to the chain plate 93 every 25 cm to achieve material pushing. The conveying roller 91 located at one end of the chain plate 93 is connected to the motor 96 via a belt 95. When the motor 96 is running, it drives the conveying roller 91 to rotate through the belt 95. The chain plate 93 conveys the material to be dried. Most of the chain plate 93 is located inside the machine housing 1, and only a small part is located outside the machine housing 1.

[0026] The cabinet 1 is arranged in a rectangular shape, the partition plate 2 is arranged in the middle of the cabinet 1 and extends along the length direction of the cabinet 1, the first drying channel 11 and the second drying channel 12 are formed between the partition plate 2 and the cabinet 1, the first drying channel 11 and the second drying channel 12 are arranged on both sides of the partition plate 2 and above the chain plate 93, the first fan screen 4 is arranged at one end of the first drying channel 11, the second fan screen 5 is arranged at one end of the second drying channel 12, and the first fan screen 4 and the second fan screen 5 are spaced apart by the partition plate 2. The heat source 3 is arranged at the opening of one end of the first drying channel 11 and the second drying channel 12, the heat source 3 abuts one end of the partition plate 2 and is spaced apart from the first fan screen 4 and the second fan screen 5; in the embodiment, the first fan screen 4 and the second fan screen 5 are spaced apart from the heat source 3 by the same distance.

[0027] A plurality of first louver exhaust ports 13 and a plurality of second louver exhaust ports 14 are arranged on opposite sides of the cabinet 1, the first louver exhaust ports 13 and the second louver exhaust ports 14 cooperate to exhaust, the first louver exhaust ports 13 are in communication with the first drying channel 11, and the second louver exhaust ports 14 are in communication with the second drying channel 12. External louvers are arranged at the first louver exhaust ports 13 and the second louver exhaust ports 14, which can naturally open to exhaust without power, saving energy.

[0028] The first fan screen 4 and the second fan screen 5 are both fan groups composed of multiple fans, the first fan screen 4 includes multiple first fans 41, and the multiple first fans 41 are arranged in an array in the first drying channel 11; the second fan screen 5 includes multiple second fans 51, and the multiple second fans 51 are arranged in an array in the second drying channel 12; the first fans 41 and the second fans 51 can adopt axial flow fans, the first fans 41 and the second fans 51 are arranged to have opposite wind directions (the wind direction is indicated by the arrow in the middle of the figure), and are arranged to have a timing conversion of the wind direction, the first fans 41 rotate forward, and the second fans 51 rotate backward; conversely, the first fans 41 rotate backward, and the second fans 51 rotate forward, the first fans 41 and the second fans 51 can be arranged to automatically convert the wind direction after working for about 30 minutes. Figure 3

[0029] ​The heat source 3 is a heating body, which heats the air around it to make the first fan 41 and the second fan 51 rotate to generate hot air. The heat source 3 can be an internal heat source, such as a steam heat exchanger, an electric heating tube, and an air energy condenser. The heat source 3 and the inner wall of one end of the cabinet 1 form a front air duct 15, and the other end of the baffle 2 away from the heat source 3 and the inner wall of the other end of the cabinet 1 form a rear air duct 16. The front air duct 15 and the rear air duct 16 are in communication with the first drying duct 11 and the second drying duct 12. When the hot air flows through the front air duct 15 and the rear air duct 16, it turns. The first drying duct 11, the front air duct 15, the second drying duct 12, and the rear air duct 16 form a closed loop for the circulation of hot air. The first fan 41 and the second fan 51 can automatically switch the direction of the wind by control. The first fan 41 and the second fan 51 are set to have opposite directions of the wind. The hot air circulates in the above-mentioned closed loop in two directions of clockwise and counterclockwise (double circulation), so that the material on the chain plate 93 is evenly heated, and the material is dried by hot air, which improves the drying efficiency.

[0030] The width of the front air duct 15 is greater than the width of the rear air duct 16. In this embodiment, the width of the front air duct 15 is 1.4 meters, and the width of the rear air duct 16 is 0.8 meters. Increasing the width of the front air duct 15 has the following advantages: 1) increasing the width of the front air duct 15 increases the space for the hot air to turn, so that the air volume of the first fan 41 and the second fan 51 can be fully utilized, the air volume is increased, the moisture is reduced, the drying time is reduced, and the drying efficiency is improved; 2) increasing the width of the front air duct 15 increases the distance between the first fan 41 and the second fan 51 and the fresh air inlet, reduces the resistance of the hot air discharged by the first fan 41 and the second fan 51 to the fresh air, and makes the fresh air smoothly enter the inside of the dryer under the negative pressure of the first fan 41 and the second fan 51 in the positive rotation state.

[0031] One end of the cabinet 1 is provided with a material inlet and a plurality of fresh air inlets. The plurality of fresh air inlets are in communication with the front air duct 15 inside the cabinet 1. The material inlet is provided with a material door 62, which can be a transparent glass plate. The material is placed on the chain plate 93 of the material conveying mechanism 9 by opening the material door 62. The plurality of fresh air inlets are provided with a plurality of fresh air doors 61, which can be electric fresh air doors, manual fresh air doors, or a combination of electric fresh air doors and manual fresh air doors. The fresh air door 61 can automatically control the opening of the fresh air under negative pressure or manually open the fresh air, so that the outside air enters the inside of the cabinet 1.

[0032] The inside of one end of the cabinet 1 is provided with a fresh air unit 8, which is arranged close to the fresh air door 61 and includes a plurality of fresh air fans 81. The plurality of fresh air fans 81 are used to suck the outside air into the inside of the cabinet 1 when the fresh air door 61 is opened. The plurality of fresh air fans 81 are located above the chain plate 93.

[0033] The other end of the casing 1 is provided with a discharge port 72 and a discharge door 71, the discharge port 72 is used for discharging the dried material, the discharge door 71 is arranged above the chain plate 93, the discharge port 72 is arranged below the discharge door 71, and a strip-shaped silica gel plate 73 is nailed below the discharge door 71 and used for wind blocking.

[0034] Specifically, the casing 1 comprises a left side plate 101, a right side plate 102, a front side plate 103 and a rear side plate 104 connected to the two ends of the left side plate 101 and the right side plate 102, the first drying channel 11 is formed between the partition plate 2 and the left side plate 101, and the second drying channel 12 is formed between the partition plate 2 and the right side plate 102. The first louvered exhaust port 13 is arranged on the left side plate 101, and the second louvered exhaust port 14 is arranged on the right side plate 102. The front air duct 15 is formed between the heat source 3 and the front side plate 103, and the rear air duct 16 is formed between the other end of the partition plate 2 away from the heat source 3 and the rear side plate 104. The front side plate 103 is provided with the feeding door 62, a plurality of fresh air inlets and a plurality of fresh air doors 61, and the rear side plate 104 is provided with the discharge port 72 and the discharge door 71. Preferably, the inner sides of the left side plate 101, the right side plate 102, the front side plate 103 and the rear side plate 104 are all attached with heat preservation plates, so that the heat preservation effect of the inside of the casing 1 is better.

[0035] Preferably, the outer wall of the casing 1 is provided with a PLC controller 10, the PLC controller 10 is electrically connected with the heat source 3, the first fan 41, the second fan 51, the fresh air fan 81, the motor 96 and the fresh air door 61, so as to control the heating time of the heat source 3, the rotation of the first fan 41, the second fan 51 and the fresh air fan 81, the operation of the motor 96 and the opening and closing of the fresh air door 61. The first louvered exhaust port 13 and the second louvered exhaust port 14 are both provided with a humidity sensor, the humidity sensor is used for detecting humidity and sending the detected humidity value to the PLC controller 10, and the humidity control exhaust process is realized through the humidity sensor.

[0036] The working principle of the utility model is as follows: when working, the feeding door 62 is opened, the material is placed on the chain plate 93 of the material conveying mechanism 9, at the same time, the heat source 3, the first fan 41 and the second fan 51 cooperate to generate hot air, the first fan 41 and the second fan 51 automatically switch the air direction through control, and the air direction of the first fan 41 and the second fan 51 is opposite, the hot air circulates in the closed loop formed by the first drying channel 11, the front air duct 15, the second drying channel 12 and the rear air duct 16, and the hot air circulates in the clockwise and counterclockwise directions in the above-mentioned closed loop (double circulation), so that the material on the chain plate 93 is uniformly heated, the material is dried by the hot air, the humidity is exhausted through the first louvered exhaust port 13 and the second louvered exhaust port 14, and the drying efficiency is improved.

[0037] The double drying channel double circulation drying machine is provided with the partition plate 2, the heat source 3, the first fan screen 4, the second fan screen 5, the first louver exhaust port 13, the second louver exhaust port 14 and the material conveying mechanism 9, so that materials can be continuously fed through the feeding port during the operation of the equipment, the equipment can continuously work, the double circulation hot air drying is carried out through the double drying channel during the forward pushing of the materials, the materials are fully and uniformly dried and rapidly dehumidified, the drying efficiency and the drying effect are improved, the problems of the existing drying equipment are solved, and the double drying channel double circulation drying machine has wide market application prospects.

[0038] The above not involved in the specific embodiments of the utility model for the description of the known art, can be implemented by referring to the known art.

[0039] According to the ideal embodiments of the utility model, the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A twin-drum double-cycle dryer characterized by: The utility model provides a drying machine, including casing, baffle, heat source, first fan screen, second fan screen and material conveying mechanism, the bottom of casing is provided with material conveying mechanism, baffle, heat source, first fan screen and second fan screen are located in the inside of casing and are located above material conveying mechanism;Baffle is located in the middle of casing and extends along the length direction of casing, and the first drying channel and the second drying channel are formed between the baffle and the casing, the first drying channel and the second drying channel are located on both sides of the baffle and above the material conveying mechanism, the first fan screen is arranged at one end of the first drying channel, the second fan screen is arranged at one end of the second drying channel, and the first fan screen and the second fan screen are spaced apart by the baffle;The heat source is arranged at the opening of one end of the first drying channel and the second drying channel, a plurality of first louver exhaust ports and a plurality of second louver exhaust ports are formed on the opposite sides of the casing, the first louver exhaust ports are communicated with the first drying channel, and the second louver exhaust ports are communicated with the second drying channel;The first fan screen comprises a plurality of first fans, the second fan screen comprises a plurality of second fans, the first fans and the second fans are arranged to have opposite air directions and are arranged to have time-varying air directions;The heat source and the inner wall of one end of the casing form a front air channel, the other end of the baffle away from the heat source and the inner wall of the other end of the casing form a rear air channel, and the first drying channel, the front air channel, the second drying channel and the rear air channel form a closed loop for circulating flow of hot air.

2. The dual pass dual cycle dryer of claim 1, wherein: The material conveying mechanism comprises two conveying rollers arranged opposite to each other and a chain plate connected between the two conveying rollers, an angle iron is arranged on the chain plate, one of the conveying rollers is connected with a motor through a belt, and the first drying channel and the second drying channel are located on both sides of the baffle and above the chain plate.

3. The dual pass dual cycle dryer of claim 2, wherein: The heat source is arranged at one end of the baffle and is spaced apart from the first fan screen and the second fan screen, and the first fan screen and the second fan screen are spaced apart from the heat source by the same distance.

4. The dual pass dual cycle dryer of claim 3, wherein: The plurality of first fans are arranged in an array in the first drying channel, the plurality of second fans are arranged in an array in the second drying channel, and the first fans and the second fans are axial flow fans.

5. The dual pass dual cycle dryer of claim 4, wherein: The heat source is a steam heat exchanger, an electric heating pipe or an air energy condenser.

6. The dual pass dual cycle dryer of claim 5, wherein: One end of the casing is provided with an inlet and a plurality of fresh air inlets, the plurality of fresh air inlets are communicated with the front air channel in the casing, an inlet door is arranged at the inlet, and a plurality of fresh air doors are arranged at the plurality of fresh air inlets.

7. The dual pass dual cycle dryer of claim 6, wherein: A fresh air unit is arranged in one end of the casing, the fresh air unit is arranged close to the fresh air doors and comprises a plurality of fresh air fans, and the plurality of fresh air fans are arranged above the chain plate.

8. The dual pass dual cycle dryer of claim 7, wherein: The other end of the casing is provided with an outlet and an outlet door, the outlet door is arranged above the chain plate, the outlet is arranged below the outlet door, and a strip-shaped silica gel plate is nailed below the outlet door to block air.

9. The dual pass dual cycle dryer of claim 8, wherein: A PLC controller is arranged on the outer wall of the casing, the PLC controller is electrically connected with the heat source, the first fans, the second fans, the fresh air fans, a motor and the fresh air doors, and a humidity sensor is arranged at each of the first louver exhaust ports and the second louver exhaust ports.

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