WO2021047384A1

WO2021047384A1 - Low-temperature mixed-flow circulating peanut dryer and drying method therefor

Info

Publication number: WO2021047384A1
Application number: PCT/CN2020/110972
Authority: WO
Inventors: 谢焕雄; 颜建春; 魏海; 吴惠昌; 施丽莉; 王伯凯; 王建楠; 刘敏基; 高学梅; 张会娟
Original assignee: 农业农村部南京农业机械化研究所
Priority date: 2019-09-09
Filing date: 2020-08-25
Publication date: 2021-03-18
Also published as: CN110613152B; CN110613152A

Abstract

Disclosed is a low-temperature mixed-flow circulating peanut dryer, comprising a feeding mechanism (1), a material circulating conveying system, a main body bin (9) and a material drying system, wherein the material circulating conveying system comprises a base assembly (2), a lifting mechanism (4), a discharge pipe (5), an upper conveyor (10), a grain storage chamber (901) and a drying chamber (902) that are sequentially arranged; the material drying system comprises an air inlet duct (905) and an air exhaust duct (908), and further comprises several layers of air inlet strip-shaped boxes (11) and several layers of air outlet strip-shaped boxes (13), with same being alternately arranged up and down in the drying chamber; several air inlets (906) in communication with the air inlet strip-shaped boxes are provided in a side wall of the air inlet duct, and several air outlets (907) in communication with the air outlet strip-shaped boxes are provided in a side wall of the air exhaust duct; and a heat supply component (3) is arranged at an inlet of the air inlet duct, and a centrifugal fan (15) is arranged at an outlet of the air exhaust duct. The present invention further relates to a method for drying peanuts. During drying, a heat supply part supplies heat to an air inlet duct, and a centrifugal fan can exhaust a hot and humid air flow inside a drying chamber, thereby being able to fully satisfy the rapid, efficient, uniform and low-consumption drying requirements and complying with the characteristics of peanut materials.

Description

Low-temperature mixed-flow circulation peanut dryer and drying method thereof

Technical field

The invention relates to the technical field of agricultural machinery, specifically, peanut drying technology.

Background technique

In recent years, with the rapid advancement of large-scale planting and mechanized harvesting technology, peanut harvesting has become increasingly concentrated. The original drying facilities and labor resources can no longer meet the demand for fast drying of post-production peanuts, and the domestic market is not suitable for fast peanut production in the production area. For drying medium and large-scale drying equipment, it is necessary to provide a peanut mixed-flow circulating dryer suitable for fast, efficient, uniform and low-consumption drying in flower production areas that meets the characteristics of peanut materials.

Summary of the invention

The purpose of the present invention is to provide a low-temperature mixed-flow circulation peanut dryer and a drying method thereof, which can well meet the requirements for fast, efficient, uniform and low-consumption drying of peanut materials and meet the characteristics of peanut materials.

The purpose of the present invention is achieved as follows: a low-temperature mixed-flow circulation peanut dryer, including:

The main silo with material drying system has a rectangular cubic structure and has a vertical middle cavity;

A material circulation conveying system arranged on the side of the main silo to transport the peanut materials from bottom to top and send the peanuts to the central cavity of the main silo; and

Provide a feeding mechanism for peanut material drying;

Wherein, the above-mentioned material circulation conveying system includes a base assembly at the bottom of the main silo and passing through the middle cavity of the main silo. The base assembly conveys the material upwards by a lifting mechanism to the upper end of the discharge pipe at the top of the main silo. The lower end of the discharging pipe is provided with a discharging branch pipe and a drying branch pipe that can be switched, and the upper center of the main silo has a feeding port communicating with the middle cavity and receiving the peanut material from the drying branch pipe. ；

The structure of the above-mentioned material drying system is:

Cover the air inlet duct and the air outlet duct on the outer sides of the two opposite sides of the main silo respectively, the lower end of the air outlet duct is equipped with a centrifugal fan that exhausts air outward, and the air inlet port of the air inlet duct is equipped with a ventilated heating component;

Several layers of air inlet strip boxes and several layers of air outlet strip boxes are arranged alternately up and down in the central cavity of the main compartment. The air inlet strip boxes and the air outlet strip boxes extend horizontally. The two ends of the strip box and the air outlet strip box are respectively fixed on the two opposite walls of the central cavity of the main warehouse, and each layer of air inlet or outlet strip boxes are arranged horizontally;

Wherein, the cross-sectional shape of the air inlet strip box and the air outlet strip box is roughly an upright isosceles triangle, and the lower sides of both are open structures. A number of vents are provided on the upper side; the side wall of the air inlet channel is provided with a number of air inlets communicating with the central cavity of the main silo, and the side wall of the air outlet channel is provided with a number of air outlets communicating with the central cavity of the main silo; One end of the air inlet strip box is connected with the air inlet, and the other end is a closed end. The arrangement of the air outlet strip box is opposite to that of the air inlet strip box, and one end of the air outlet strip box is connected with the air outlet.

Further, the base assembly includes a base frame and at least one hopper installed on the base frame. The opening of the hopper faces upwards and is in communication and sealing connection with the bottom of the central cavity of the main silo. The lower end of the hopper has a discharge opening. A grain discharging mechanism is provided, and the base assembly further includes a vibrating screen conveying assembly, a driving mechanism, and a soil and trash conveying assembly. The vibrating screen conveying assembly is located directly below the discharge opening at the lower end of the hopper and is used to receive from the hopper For fallen peanut materials, the driving mechanism is connected to the vibrating screen conveying assembly and is used to drive the vibrating screen conveying assembly to vibrate. The soil and trash conveying assembly is used to receive and transport the shaken soil of the vibrating screen conveying assembly. miscellaneous.

Further, the discharge pipe is connected to the branch pipe with a discharge pipe extending from top to bottom, and the lower port of the discharge pipe is close to the ground.

Further, there are two hoppers, and the two hoppers are arranged side by side. The vibrating screen conveying assembly includes a first-level vibrating conveying mechanism, a second-level vibrating screening and soil removal conveying mechanism, the first-level vibrating conveying mechanism, The two-stage vibrating screening soil removal and conveying mechanism is located directly below two hoppers. The first-stage vibrating conveying mechanism and the two-stage vibrating screening soil removal and conveying mechanism are arranged obliquely, and the lowest end of the first-level vibrating conveying mechanism is directly opposite to the second stage. Conveyor belt surface of the vibrating screening soil removal conveying mechanism, the lowest end of the secondary vibrating screening soil removal conveying mechanism is facing the lower end feeding section of the non-destructive lifting mechanism, and the discharge end of the feeding mechanism is facing the secondary vibrating screening Conveyor belt surface of soil removal conveyor.

Further, the soil and trash transport assembly component includes a first-level soil trash transporting mechanism and a second-level soil trash transporting mechanism for discharging the soil trash, and the first-level soil trash transporting mechanism is in the second-level vibrating screening soil removal transporting mechanism The discharge end of the first-level soil and trash conveying mechanism is directly above the conveyor belt surface of the second-level soil and trash conveying mechanism.

Further, an airtight upper cover plate is encapsulated on the top of the main silo, the feed opening is opened on the upper cover plate, and the upper ends of the air inlet duct and the exhaust duct are sealed by the upper cover plate.

Further, an upper conveyor is installed on the upper side of the upper cover plate, the upper conveyor is a horizontal conveyor belt mechanism, and the lower port of the drying branch pipe faces the conveyor belt surface of the upper conveyor. The discharge end of the upper conveyor is directly above the inlet.

Further, each layer of air inlet strip boxes is arranged with two edge strip boxes respectively arranged at the two ends of the layer, and the two edge strip boxes are arranged oppositely, and each edge strip box is an inclined net. Plate structure and one end of which is facing an air inlet, the other end of each edge strip box is a closed structure, each edge strip box and the wall surface of the central cavity of the main warehouse form an opening connected with the air inlet and the lower side is an opening In the cavity of the structure, a plurality of ventilation holes are uniformly distributed on the edge strip box.

Further, the middle cavity of the main silo is composed of a grain storage room and a drying room. The grain storage room and the drying room are arranged in sequence from top to bottom and communicate with each other, wherein the air inlet strip box and the air outlet strip The shape box is located in the drying room.

A low-temperature mixed-flow circulation peanut drying method, which includes a feeding stage, a drying stage, and a discharging stage in sequence;

The feeding stage includes the following steps:

A1. After the newly harvested peanut materials are initially cleaned and removed, they are conveyed to the conveyor belt surface of the secondary vibrating screening and soil removal conveying mechanism through the feeding mechanism;

A2. Under the action of vibration, the material gradually moves forward and the floating soil attached to the surface of the peanuts gradually shakes down. The floating soil falls to the first-level soil and trash conveying mechanism, and is transported through the first-level soil and trash conveying mechanism to the second-level soil and trash conveying mechanism. The secondary soil trash conveying mechanism transports the soil trash to the outside of the dryer;

A3. After the peanut material is conveyed to the lower feeding section of the non-destructive hoist by the secondary vibrating screening and soil removal conveying mechanism, it is conveyed upwards to the discharge pipe by the non-destructive hoisting mechanism, and then falls into the upper conveyor, and then the material is transported by the upper conveyor Transport to the grain storage room;

The drying stage includes the following steps:

B1. When the peanut material fills the grain storage room and the drying room, start the centrifugal fan and heating components in the material drying system to form a stream that passes through the air inlet, air inlet, air inlet strip box, and air outlet strip in sequence Hot air from boxes, air outlets and exhaust ducts;

B2. The material flows out slowly from the two grain discharging mechanisms, and falls into the first-level vibration conveying mechanism and the second-level vibration screening and soil removal conveying mechanism. Among them, the peanut materials falling into the first-level vibration conveying mechanism are collected into the second-level vibration screening. After the soil removal and conveying mechanism, the material gradually moves forward under the action of vibration and the floating soil attached to the surface of the peanuts gradually vibrates down. The floating soil falls to the first-level soil and trash conveying mechanism, and is transported to the second-level through the first-level soil and trash conveying mechanism. Soil and trash conveying mechanism, the secondary soil trash conveying mechanism transports the soil to the outside of the dryer, and the peanut material is transported to the lower feed section of the non-destructive hoist by the secondary vibrating screening and soil removal transport mechanism, and then lifted and transported by the non-destructive hoist In the discharge pipe, it will fall into the upper conveyor, and then the peanut material will be transported to the grain storage room by the upper conveyor;

Repeat steps B1 and B2 until the moisture content of peanuts is reduced to the moisture content standard suitable for storage, then stop drying;

The discharging stage includes the following steps:

C1. Cool the peanut material. During the specific operation, continue to start the centrifugal fan and stop the operation of the heating components to form a stream that passes through the air inlet, air inlet, air inlet strip box, air outlet strip box, air outlet, The cooling air flow of the exhaust duct;

C2. Discharge the peanut materials. The materials flow out slowly from the two grain discharging mechanisms, and fall into the primary vibration conveying mechanism and the secondary vibrating screening and soil removal conveying mechanism. Among them, the peanut materials falling into the primary vibration conveying mechanism are collected into the second After the first-level vibrating screening soil removal and conveying mechanism, the peanut material enters the lower end feeding section of the non-destructive lifting mechanism. After lifting and conveying, the material enters the unloading branch pipe, enters the discharge pipe and gradually slides to the ground.

The beneficial effects of the present invention are:

1) The peanut material can be dried evenly. During drying, the hot air flows from the air inlet into the air inlet, and then enters the inner cavity of the air inlet strip box. The hot air flows out from the vent of the air inlet strip box to form an upward air flow and direction. Then the hot air flows into the inner cavity of the adjacent air outlet strip box, and enters the exhaust duct through the air outlet. During this process, a number of relatively uniformly distributed convection hot air flows are formed in the drying chamber. , So as to achieve uniform drying effect;

2) The drying process is fast, efficient, low-consumption and in line with the characteristics of peanut materials. During drying, the peanut materials pass through the base assembly, lifting mechanism, discharge pipe, upper conveyor, grain storage room, and drying room in sequence, forming a cycle The conveying line can dry the peanut material uninterruptedly, so that the peanut material can be fully dried and the drying efficiency is guaranteed;

3) The soil and impurities contained in the peanut material can be removed during the drying stage and the feeding stage, and during drying, the peanut material is cyclically transported and repeatedly passes through the base assembly. The vibrating screen conveying component transports the peanut material and drives the peanut material to proceed. The continuous vibration makes the soil and debris fall continuously, and the soil and debris that has been shaken off by the soil and debris conveying component is transported to the outside of the dryer, so as to achieve the purpose of continuously cleaning the peanut material during the drying process.

Description of the drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a left side view in Fig. 1.

Fig. 3 is a schematic diagram of the three-dimensional structure of the base assembly.

Figure 4 is a schematic diagram of the internal structure of the base assembly.

Fig. 5 is a left side view in Fig. 4.

Figure 6 is a schematic diagram of the layout relationship between the grain storage room and the upper conveyor.

Fig. 7 is a schematic diagram of the drying principle of the present invention.

Fig. 8 is a cross-sectional view taken along the line I-I in Fig. 7.

Figure 9 is a schematic diagram of the arrangement of single-layer air inlet strip boxes.

Figure 10 is a schematic diagram of the material falling direction of the discharge pipe.

Figure 11 is a schematic diagram of the relative positional relationship between the grain storage room and the drying room.

Fig. 12 is an enlarged view of part A in Fig. 8.

Fig. 13 is an enlarged view of part B in Fig. 9.

detailed description

The present invention will be further described below in conjunction with the drawings and specific embodiments.

As shown in Figure 1-8, a low-temperature mixed-flow circulation peanut dryer includes:

The main bin 9 with a material drying system has a rectangular cubic structure and has a vertical middle cavity;

A material circulation conveying system that is arranged on the side of the main body warehouse 9 to transport the peanut material from bottom to top and sends the peanut material into the central cavity of the main body warehouse 9; and

Feeding mechanism 1 for drying peanut materials.

Among them, the above-mentioned material circulation conveying system includes a base assembly 2 at the bottom of the main silo 9 and passing through the middle cavity of the main silo 9. The base assembly 2 is conveyed upwards by the lifting mechanism 4 to connect to the unloading at the top of the main silo 9 The upper end of the pipe 5 and the lower end of the discharge pipe 5 are provided with a discharging branch pipe 7 and a drying branch pipe 6 that can be switched mutually. Feeding port 903a for peanut material.

As shown in Figure 10, the discharge pipe 5 is equipped with a material falling direction switching mechanism 8, which is equivalent to a switching valve, which is used to switch whether the material falls to the discharge branch pipe 7 or the dry branch pipe 6. The material falling direction The setting of the switching mechanism 8 is already common knowledge. In this embodiment, the material falling direction switching mechanism 8 includes a guide plate 801, and also includes a discharge rope 802 and a locking rope 803 connected to the guide plate 801; when drying, pull the discharge The rope 802 makes the guide plate 801 close the discharge to the branch pipe 7 and open the drying branch pipe 6 at the same time, so that the peanut material can fall on the conveyor belt surface of the upper conveyor 10; when the drying is completed and the discharge is required, pull and lock The rope 803 makes the guide plate 801 close the drying branch pipe 6 and open the discharge branch pipe 7 at the same time, so that the peanut material slides into the discharge pipe 16 to complete the discharge.

As shown in Figures 7, 8, 9, 12, and 13, the structure of the above-mentioned material drying system is:

Cover the air inlet duct 905 and the air outlet duct 908 on the outer sides of the two opposite sides of the main compartment 9 respectively. The lower end of the air outlet duct 908 is equipped with a centrifugal fan 15 that exhausts air outward. The air inlet port of the air inlet duct 905 is equipped with ventilated heating components. 3;

Several layers of air inlet strip boxes 11 and several layers of air outlet strip boxes 13 are arranged alternately up and down in the central cavity of the main compartment 9. The air inlet strip boxes 11 and the air outlet strip boxes 13 extend horizontally, and the air

inlet strip boxes

11 and 13 are all horizontally extended. The two ends of the air strip box 11 and the air outlet strip box 13 are respectively fixed on the two opposite wall surfaces of the central cavity of the main compartment 9, and each layer of the air inlet strip box 11 or the air outlet strip box 13 is arranged horizontally. Several

Among them, the heating component 3 is similar to the components of the air conditioner. It can heat during the drying phase, and can stop heating during the cooling phase, and can deliver fresh air from the outside to the air inlet duct 905.

The cross-sectional shape of the air inlet strip box 11 and the air outlet strip box 13 is roughly an upright isosceles triangle, and the lower sides of both are open structures. On the walls of the air inlet strip box 11 and the air outlet strip box 13 A number of vents 14 are provided on the upper side; the side wall of the air inlet duct 905 is provided with a number of air inlets 906 communicating with the central cavity of the main chamber 9, and the side wall of the exhaust duct 908 is provided with a plurality of outlets communicating with the central cavity of the main chamber 9 Air outlet 907; one end of the air inlet strip box 13 is connected to the air inlet 906, and the other end is a closed end. The arrangement of the air outlet strip box 11 is opposite to that of the air inlet strip box 13, and one end of the air outlet strip box 11 is connected to the air outlet 907 is connected.

Each layer of air inlet strip boxes 11 is arranged with two edge strip boxes 12 respectively arranged at the two ends of the layer, and the two edge strip boxes 12 are arranged oppositely, and each edge strip box 12 is inclined The net plate structure and its one end is facing an air inlet 906, the other end of each edge strip box 12 is a closed structure, and each edge strip box 12 and the wall surface of the central cavity of the main compartment 9 form an air inlet 906 The lower side is a cavity with an open structure, and a number of ventilation holes 14 are evenly distributed on the edge strip box 12.

As shown in Fig. 11, the middle cavity of the main silo 9 is composed of a grain storage room 901 and a drying room 902. The grain storage room 901 and the drying room 902 are arranged from top to bottom and communicate with each other. Among them, the air inlet strip box 11 , The air outlet strip box 13 is in the drying chamber 902.

During drying, the hot air flow enters the air inlet 906 from the air inlet duct 905, and then enters the inner cavity of the air inlet strip box 11, and the hot air flows out from the vent 14 of the air inlet strip box 11 to form an upward air flow and a downward air flow. , And then the hot air enters the inner cavity of the adjacent air outlet strip box 13 and enters the exhaust duct 908 through the air outlet 907. During this process, several relatively uniformly distributed convections are formed in the inner cavity of the drying chamber 902 Hot air flow to achieve uniform drying effect.

As shown in Figures 3, 4, and 5, the above-mentioned base assembly 2 includes a base frame 201 and two hoppers 202 mounted on the base frame 201. The opening of the hopper 202 faces upwards and is connected to the bottom of the drying bin 902 in an interconnected and sealed manner. The lower end of the discharge port is provided with a grain discharge mechanism 203. The base assembly 2 also includes a vibrating screen conveying assembly, a driving mechanism 206, and a soil and trash conveying assembly. The vibrating screen conveying assembly is located directly below the lower discharge port of the hopper 202 and used To receive the peanut material falling from the hopper 202, the driving mechanism 206 is connected with the vibrating screen conveying assembly and is used to drive the vibrating screen conveying assembly to vibrate. The soil and trash conveying assembly is used for receiving and conveying the vibrating screen conveying assembly. The parts shake off the dirt.

As shown in FIGS. 2 and 10, the discharging to branch pipe 7 is connected with a discharging pipe 16 extending from top to bottom, and the lower port of the discharging pipe 16 is close to the ground.

Two hoppers 202 are arranged side by side, and the vibrating screen conveying assembly components include a first-level vibrating conveying mechanism 204, a second-level vibrating screening soil removal and conveying mechanism 205, a first-level vibration conveying mechanism 204, and a second-level vibrating screening soil removal and conveying mechanism 205. Directly below the two hoppers 202, the primary vibrating conveying mechanism 204 and the secondary vibrating screening soil removal conveying mechanism 205 are arranged obliquely, and the lowest end of the primary vibrating conveying mechanism 204 faces the conveyor belt of the secondary vibrating screening soil removal conveying mechanism 205 On the other hand, the lowest end of the secondary vibrating screening soil removal conveying mechanism 205 faces the lower end feeding section of the non-destructive lifting mechanism 4, and the discharge end of the feeding mechanism 1 faces the conveyor belt surface of the secondary vibrating screening soil removal conveying mechanism 205.

The above-mentioned soil and trash transport assembly components include a first-level soil trash transporting mechanism 207 and a second-level soil trash transporting mechanism 208 for discharging soil trash. The first-level soil trash transporting mechanism 207 is in front of the second-level vibrating screening soil removal transporting mechanism 205. Below, the discharge end of the first-level soil and trash conveying mechanism 207 is directly above the conveyor belt surface of the second-level soil and trash conveying mechanism 208.

As shown in Figures 1 and 6, an airtight upper cover 903 is encapsulated on the top of the main bin 9, the feed opening 903a is opened on the upper cover 903, and the upper ends of the air inlet duct 905 and the exhaust duct 908 are The upper cover 903 is sealed, and the upper cover 903 is equipped with fences according to project requirements to prevent the operator from falling.

A support frame 904 for supporting the upper cover 903 is fixed on the inner wall of the above-mentioned grain storage chamber 901 to form a sufficient support for the upper cover 903.

The upper conveyor 10 is installed on the upper side of the upper cover plate 903. The upper conveyor 10 is a horizontal conveyor belt mechanism. The lower port of the drying branch pipe 6 faces the conveyor belt surface of the upper conveyor 10. The discharge end is directly above the inlet 903a.

As shown in Figs. 1-13, the peanut drying method of this embodiment sequentially includes a feeding stage, a drying stage, and a discharging stage.

The feeding stage includes the following steps:

A1. After the newly harvested peanut material is initially cleaned and removed, it is conveyed to the conveyor belt surface of the secondary vibrating screening and soil removal conveying mechanism 205 through the feeding mechanism 1;

A2. Under the action of vibration, the material gradually moves forward and the floating soil attached to the surface of the peanuts gradually shakes down. The floating soil falls to the first-level soil transport mechanism 207, and is transported to the second-level soil transport through the first-level soil transport mechanism 207 Mechanism 208, the secondary soil trash conveying mechanism 208 transports the soil trash to the outside of the dryer;

A3. After the peanut material is conveyed to the lower feeding section of the non-destructive hoist 4 through the secondary vibrating screening and soil removal conveying mechanism 205, it is conveyed upward to the discharge pipe 5 through the non-destructive hoisting mechanism 4, and then falls into the upper conveyor 10, and then The upper conveyor 10 transports materials to the grain storage room 901.

The drying stage includes the following steps:

B1. When the peanut material fills the grain storage room 901 and the drying room 902, start the centrifugal fan 15 and the heating component 3 in the material drying system to form a stream that passes through the air inlet 905, the air inlet 906, and the air inlet strip in sequence Box 11, the air outlet strip box 13, the air outlet 907, the hot air flow of the exhaust duct 908;

B2. The materials flow out slowly from the two grain discharging mechanisms 203, and fall into the primary vibration conveying mechanism 204 and the secondary vibrating screening soil removal conveying mechanism 205. Among them, the peanut materials falling into the primary vibration conveying mechanism 204 are collected into the second stage. After the first-level vibration screening soil removal conveying mechanism 205, under the action of vibration, the material gradually moves forward and the floating soil attached to the surface of the peanuts gradually shakes down, and the floating soil falls to the first-level soil trash conveying mechanism 207, and passes through the first-level soil trash conveying mechanism 207. The conveying mechanism 207 is conveyed to the secondary soil and trash conveying mechanism 208, the second-level soil and trash conveying mechanism 208 conveys the soil to the outside of the dryer, and the peanut material is conveyed to the lower end of the non-destructive hoist 4 through the secondary vibrating screening and soil removal conveying mechanism 205 After the feeding section, it is lifted by the non-destructive elevator 4 and transported to the discharge pipe 5, and then falls into the upper conveyor 10, and then the peanut material is transported to the grain storage room 901 by the upper conveyor 10;

Repeat steps B1 and B2 until the moisture content of peanuts is reduced to a moisture content standard suitable for storage, then stop drying.

The discharging stage includes the following steps:

C1. Cool the peanut material. During the specific operation, continue to start the centrifugal fan 15 and stop the operation of the heating component 3 to form a stream that passes through the air inlet channel 905, the air inlet 906, the air inlet strip box 11, and the air outlet strip in sequence The cooling air flow of the box 13, the air outlet 907, and the exhaust duct 908;

C2. Discharge the peanut material. The material flows out slowly from the two grain discharging mechanisms 203, and falls into the primary vibration conveying mechanism 204 and the secondary vibrating screening soil removal conveying mechanism 205, among which the peanut material falls into the primary vibration conveying mechanism 204 After being collected into the secondary vibrating screening and soil removal conveying mechanism 205, the peanut material enters the lower feeding section of the non-destructive lifting mechanism 4. After lifting and conveying, the material enters the discharge branch pipe 7 and enters the discharge pipe 16 and then gradually slides to the lower end of the feeding section. ground.

The above are the preferred embodiments of the present invention. Those of ordinary skill in the art can also make various changes or improvements on this basis. Without departing from the general concept of the present invention, these changes or improvements should be claimed by the present invention. Within range.

Claims

A low-temperature mixed-flow circulation peanut dryer, which is characterized in that it comprises:

The main silo (9) with a material drying system is a rectangular cube structure and has a vertical middle cavity;

A material circulation conveying system arranged on the side of the main bin (9) to transport the peanut material from bottom to top and send the peanut material into the central cavity of the main bin (9); and

Feeding mechanism (1) that provides peanut materials for drying;

Wherein, the above-mentioned material circulation conveying system includes a base assembly (2) at the bottom of the main silo (9) and directly passing through the middle cavity of the main silo (9), and the base assembly (2) is used for lifting the material by the lifting mechanism (4). The upward conveying is connected to the upper end of the discharge pipe (5) located at the top of the main silo (9). The lower end of the discharge pipe (5) is provided with a discharging branch pipe (7) and a drying branch pipe (6) that can be switched The upper central position of the main bin (9) has a feeding port (903a) communicating with the middle cavity and receiving the peanut material from the drying branch pipe (6);

The structure of the above-mentioned material drying system is:

Cover the air inlet duct (905) and the air outlet duct (908) on the outer sides of the two opposite sides of the main compartment (9) respectively. The lower end of the air outlet duct (908) is equipped with a centrifugal fan (15) that exhausts air outward. The air inlet port of the air duct (905) is equipped with a ventilated heating component (3);

Several layers of air inlet strip boxes (11) and several layers of air outlet strip boxes (13) arranged alternately in the central cavity of the main compartment (9), the air inlet strip boxes (11), outlet The air strip box (13) extends horizontally, and the two ends of the air inlet strip box (11) and the air outlet strip box (13) are respectively fixed on two opposite wall surfaces of the central cavity of the main compartment (9). There are several air inlet strip boxes (11) or air outlet strip boxes (13) arranged horizontally on the first floor;

Wherein, the cross-sectional shape of the air inlet strip box (11) and the air outlet strip box (13) is roughly an upright isosceles triangle, and the lower sides of both are open structures, and the air inlet strip box (11) ), the wall of the air outlet strip box (13) is provided with a number of ventilation holes (14); the side wall of the air inlet duct (905) is provided with a number of air inlets (906) communicating with the central cavity of the main chamber (9) ), the side wall of the exhaust duct (908) is provided with a plurality of air outlets (907) communicating with the central cavity of the main compartment (9); one end of the air inlet strip box (11) is connected to the air inlet (906) ), the other end is a closed end, the arrangement of the air outlet strip box (13) is opposite to that of the air inlet strip box (11), and one end of the air outlet strip box (13) is connected to the air outlet (907).
The low-temperature mixed-flow circulating peanut dryer according to claim 1, wherein the base assembly (2) comprises a base frame (201) and at least one hopper (202) installed on the base frame (201) ), the opening of the hopper (202) faces upwards and is connected to the bottom of the central cavity of the main silo (9) in an interconnected and sealed manner, the lower end of the hopper (202) is provided with a grain discharge mechanism (203), and the base The assembly (2) also includes a vibrating screen conveying assembly, a vibrating mechanism (206), and a soil and trash conveying assembly. The vibrating screen conveying assembly is located directly below the discharge opening at the lower end of the hopper (202) and is used to receive the hopper ( 202), the driving mechanism (206) is connected with the vibrating screen conveying assembly part and used to drive the vibrating screen conveying assembly part to vibrate, and the soil and trash conveying assembly part is used for receiving and conveying the vibrating screen. The soil and debris from the assembly parts shake off.
The low-temperature mixed-flow circulating peanut dryer according to claim 1, characterized in that: the discharge pipe (7) is connected with a discharge pipe (16) extending from top to bottom, and the discharge pipe (16) is connected to the branch pipe (7). The lower port of the tube (16) is close to the ground.
The low-temperature mixed-flow circulation peanut dryer according to claim 2, characterized in that: the hopper (202) is provided with two, and the two hoppers (202) are arranged side by side, and the vibrating screen conveying assembly component includes a The first-level vibrating conveying mechanism (204), the second-level vibrating screening soil removal and conveying mechanism (205), the first-level vibration conveying mechanism (204), the second-level vibrating screening soil removal and conveying mechanism (205) are divided into two hoppers ( 202) Right below, the first-level vibration conveying mechanism (204) and the second-level vibrating screening soil removal conveying mechanism (205) are arranged obliquely, and the lowest end of the first-level vibration conveying mechanism (204) is facing the second-level vibrating screening Conveyor belt surface of the soil removal conveying mechanism (205), the lowest end of the secondary vibrating screening soil removal conveying mechanism (205) is facing the lower end feeding section of the non-destructive lifting mechanism (4), and the loading mechanism (1) The discharge end is facing the conveyor belt surface of the secondary vibrating screening soil removal conveying mechanism (205).
The low-temperature mixed-flow circulation peanut dryer according to claim 4, characterized in that: the soil trash conveying assembly component includes a first-level soil trash conveying mechanism (207) and a second-level soil trash transporting mechanism (207) for discharging the soil trash. Mechanism (208), the first-level soil and trash conveying mechanism (207) is directly below the second-level vibrating screening and soil removal conveying mechanism (205), and the discharge end of the first-level soil and trash conveying mechanism (207) is at the second The conveyor belt surface of the grade soil and miscellaneous conveying mechanism (208) is directly above.
The low-temperature mixed-flow circulating peanut dryer according to claim 1, characterized in that: the top of the main bin (9) is encapsulated with an airtight upper cover (903), and the feed port (903a) It is opened on the upper cover plate (903), and the upper ends of the air inlet duct (905) and the exhaust duct (908) are sealed by the upper cover plate (903).
The low-temperature mixed-flow circulation peanut dryer according to claim 6, characterized in that: an upper conveyor (10) is installed on the upper side of the upper cover plate (903), and the upper conveyor (10) is horizontal The conveyor belt mechanism, the lower port of the drying branch pipe (6) is directly opposite to the conveyor belt surface of the upper conveyor (10), and the discharge end of the upper conveyor (10) is located at the inlet (903a) Directly above.
The low-temperature mixed flow circulation peanut dryer according to claim 1, characterized in that: each layer of air inlet strip box (11) is arranged with two edge strip boxes ( 12), and the two edge strip boxes (12) are arranged opposite each other, each edge strip box (12) has a slanted net plate structure and its one end faces an air inlet (906), and each edge strip box ( 12) The other end is a closed structure. Each edge strip box (12) and the wall surface of the central cavity of the main compartment (9) form a cavity connected to the air inlet (906) with an open structure on the lower side, so A plurality of ventilation holes (14) are uniformly distributed on the edge strip box (12).
The low-temperature mixed-flow circulation peanut dryer according to any one of claims 1-8, characterized in that: the middle cavity of the main silo (9) consists of a grain storage chamber (901) and a drying chamber (902) Composition, the grain storage room (901) and the drying room (902) are arranged in order from top to bottom and communicate with each other, wherein the air inlet strip box (11) and the air outlet strip box (13) are located in the drying room ( 902) within.
A low-temperature mixed-flow circulation peanut drying method, which is characterized in that it includes a feeding stage, a drying stage, and a discharging stage in sequence;

The feeding stage includes the following steps:

A1. After the newly harvested peanut material is initially cleaned and removed, it is transported to the conveyor belt surface of the secondary vibrating screening and soil removal transport mechanism (205) through the feeding mechanism (1);

A2. Under the action of vibration, the material gradually moves forward and the floating soil attached to the surface of the peanuts gradually shakes down. The floating soil falls to the first-level soil and trash conveying mechanism (207), and is transported to the second-level soil and trash conveying mechanism (207). The second-level soil and trash conveying mechanism (208), and the second-level soil and trash conveying mechanism (208) transport the soil to the outside of the dryer;

A3. After the peanut material is conveyed to the lower feeding section of the non-destructive hoist (4) by the secondary vibrating screening and soil removal conveying mechanism (205), it is conveyed upwards to the discharge pipe (5) through the non-destructive hoisting mechanism (4) and dropped Enter the upper conveyor (10), and then convey the material to the grain storage room (901) by the upper conveyor (10);

The drying stage includes the following steps:

B1. When the peanut material fills the grain storage room (901) and the drying room (902), start the centrifugal fan (15) and the heating component (3) in the material drying system to form a stream that passes through the air inlet (905) ), the hot air from the air inlet (906), the air inlet strip box (11), the air outlet strip box (13), the air outlet (907), and the exhaust duct (908);

B2. The material flows out slowly from the two grain discharging mechanisms (203), and falls into the primary vibrating conveying mechanism (204) and the secondary vibrating screening soil removal conveying mechanism (205), of which it falls into the primary vibrating conveying mechanism (204) After the peanut materials of) are collected into the secondary vibrating screening and soil removal conveying mechanism (205), the materials gradually move forward under the action of vibration and the floating soil attached to the surface of the peanuts gradually shakes down, and the floating soil falls to the first-level soil impurities The conveying mechanism (207) is transported to the secondary soil conveying mechanism (208) through the first grade soil and trash conveying mechanism (207), and the second grade soil and trash conveying mechanism (208) transports the soil to the outside of the dryer, and the peanut material is passed through After the two-stage vibrating screening soil removal conveying mechanism (205) is transported to the lower feeding section of the non-destructive hoist (4), it is lifted by the non-destructive hoist (4) and transported to the discharge pipe (5), and then dropped to the upper conveying section. Machine (10), and then the upper conveyor (10) transports the peanut material to the grain storage room (901);

Repeat steps B1 and B2 until the moisture content of peanuts is reduced to the moisture content standard suitable for storage, then stop drying;

The discharging stage includes the following steps:

C1. Cool the peanut material. During the specific operation, continue to start the centrifugal fan (15) and stop the operation of the heating component (3) to form a stream that passes through the air inlet (905), the air inlet (906), and the air inlet in sequence The cooling air flow of the shaped box (11), the air outlet strip box (13), the air outlet (907), and the exhaust duct (908);

C2. Discharge the peanut material. The material slowly flows out from the two grain discharging mechanisms (203), and falls into the primary vibration conveying mechanism (204) and the secondary vibrating screening soil removal and conveying mechanism (205), which falls into the primary vibration After the peanut material of the conveying mechanism (204) is collected into the secondary vibrating screening and soil removal conveying mechanism (205), the peanut material enters the lower feeding section of the non-destructive lifting mechanism (4), and the material enters the unloading branch after being lifted and conveyed The pipe (7) enters the discharge pipe (16) and then gradually slides down to the ground.