CN110567258A - movable rice drying equipment based on microwave and hot air combined drying process - Google Patents

Abstract

The invention relates to the technical field of grain dryers, in particular to a mobile paddy drying device based on a microwave-hot-air combined drying process, comprising a microwave drying section, a hot-air drying section and a spiral lifting section, the microwave drying section and the hot-air drying section Set from top to bottom and connected up and down, one side of the paddy drying device is provided with a feeding port for the paddy, and the feeding port communicates with the head end of the material conveying trough located below the hot air drying section, the material conveying trough The middle part is communicated with the bottom of the hot air drying section, the bottom of the spiral lifting section is communicated with the end of the material conveying trough, and the upper part of the spiral lifting section is communicated with the upper part of the microwave drying section through a chute; the side wall of the spiral lifting section There is a discharge port below. The invention realizes efficient and high-quality drying of paddy, greatly reduces energy consumption, and has remarkable energy-saving effect.

Description

A mobile paddy drying equipment based on microwave and hot air combined drying process

technical field

The invention relates to the technical field of grain dryers, in particular to a mobile paddy drying device based on a combined drying process of microwave and hot air.

Background technique

Agricultural machinery and equipment need to focus on improving the ability of agricultural machinery and equipment to collect information, make intelligent decisions and operate accurately, and promote the formation of an overall information-based solution for agricultural production.

The development of miniaturized grain drying equipment is still in its infancy. Due to the lack of technology, there are only a dozen or so enterprises producing small drying equipment in my country. Generally, there are large energy consumption, low energy utilization rate, uneven drying effect and other problems. Cumbersome and inconvenient to move and other shortcomings, causing its market development to stagnate.

Vigorously developing paddy drying technology can not only greatly shorten the time required for the grain drying process, make grain storage not subject to weather restrictions, and allow fresh grains to be marketed in advance, improving economic benefits; but also improving grain quality and making its storage time longer It is not easy to deteriorate, which greatly reduces the loss of grain during storage. The combination of microwave and hot air drying process can greatly improve the quality and efficiency of paddy drying.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a mobile paddy drying device based on the combined drying process of microwave and hot air, which realizes efficient and high-quality drying of paddy, greatly reduces energy consumption, and has remarkable energy-saving effect.

In order to realize the purpose of the present invention, the technical scheme adopted in the present invention is:

The invention discloses a mobile paddy drying device based on a microwave-hot-air combined drying process, comprising a microwave drying section, a hot-air drying section and a spiral lifting section, wherein the microwave drying section and the hot-air drying section are arranged from top to bottom and communicated up and down One side of the paddy drying device is provided with a feeding port for rice, the feeding port is connected with the head end of the material conveying trough located under the hot air drying section, and the middle of the material conveying trough is connected to the bottom of the hot air drying section. The bottom of the spiral lifting section is communicated with the end of the material conveying trough, and the upper part of the spiral lifting section is communicated with the upper part of the microwave drying section through a chute; a discharge port is provided under the side wall of the spiral lifting section; After entering from the feeding port, it is transported to the spiral lifting section through the material conveying trough, and then enters the microwave drying section and the hot air drying section in turn through the chute, and then falls into the material conveying trough. out of the rice.

The microwave drying section includes a microwave drying cavity, a first feed port and a first discharge port respectively disposed at the upper and lower ends of the microwave drying cavity, and a microwave emission source disposed outside the microwave drying cavity; the hot air drying section It includes a hot air drying cavity, a second feeding port and a second discharging port respectively arranged at the upper and lower ends of the hot air drying section, and a hot air blower arranged at the bottom thereof.

At least one baffle plate is fixed on the inner wall of the hot air drying cavity. The baffle plate has a conical structure, and the surface of the baffle plate is evenly distributed with through holes for the passage of the rice. The air distribution plate is arranged below the baffle plate. The air distribution plate has a conical structure, and air holes are evenly distributed thereon, and a connecting pipe communicated with the material conveying groove is arranged in the middle.

The inner wall of the hot air drying chamber is provided with first, second and third baffles from bottom to bottom, and the longitudinal section widths of the first and third baffles gradually increase from top to bottom. The longitudinal section width of the second baffle plate gradually decreases from top to bottom.

The lower part of the side wall of the hot air drying section is provided with an observation port, and the upper part of the side wall is provided with at least one hot air section moisture exhaust port.

The microwave drying cavity is composed of an upper cylindrical structure cavity and a lower conical cavity, the first discharge port is arranged at the lower end of the conical cavity, and the first discharge port is provided with a discharge port The gate valve of the discharge port, the gate valve of the discharge port includes a gate bracket in a box-shaped structure fixed on the outer wall of the first discharge port, and the inner wall of the gate bracket is provided with a gate for sliding in cooperation with the gate. The first discharge port is provided with a gate hole for the gate to pass through, and the cross-sectional length of the gate bracket is greater than the outer diameter of the first discharge port.

The top of the microwave drying cavity is provided with at least one microwave section moisture exhaust port, and the side wall of the microwave drying cavity is provided with a second observation port.

The helical lifting section includes a helical lifting auger and a motor. The lifting auger includes a main shaft and a helical sheet arranged on the outer wall of the main shaft. The bottom end of the main shaft is connected to the output end of the motor. The motor is connected with a frequency conversion device.

The discharge port is provided with a humidity monitoring module and a temperature and humidity monitoring module.

The beneficial effects of the present invention are:

1. The present invention adopts microwave and hot air fluidized internal circulation combined drying process, integrates the advantages of the two drying methods, and realizes efficient and high-quality drying of paddy; the energy consumption of equipment using the combined drying process is also greatly reduced. , compared with similar equipment, the energy consumption can be reduced by 62.2%, and the energy saving effect is remarkable;

2. The present invention adopts the batch drying and movable working mode, improves the working efficiency of the paddy drying equipment, and realizes the design goal of flexible and efficient operation across regions;

3. The present invention integrates a temperature and humidity detection module to realize the real-time monitoring of the drying state of the paddy in the equipment, and avoid the problem of quality degradation caused by overheating of the paddy due to over-drying.

Description of drawings

Fig. 1 is the structure schematic diagram of the present invention;

Fig. 2 is the structural representation of the microwave drying section of the present invention;

Fig. 3 is the structural representation of the hot air drying section of the present invention;

Fig. 4 is the structural representation of the spiral lift section of the present invention;

5 is a schematic view of the structure of the top of the cavity of the microwave drying section of the present invention;

Fig. 6 is the structural schematic diagram of the gate valve of the discharge port of the present invention;

Fig. 7 is the structure schematic diagram of the baffle plate of the present invention;

8 is a schematic structural diagram of an air distribution panel of the present invention;

FIG. 9 is a schematic diagram of the structure of the hoisting auger of the present invention.

In the figure, 1 microwave drying section, 101 microwave drying cavity, 102 first feed port, 103 first discharge port, 104 microwave emission source, 105 discharge port gate valve, 106 gate bracket, 107 gate, 108 chute, 109 microwave section moisture outlet, 110 second observation port, 2 hot air drying section, 201 hot air drying cavity, 202 hot air blower, 203 baffle, 204 air distribution plate, 205 air distribution hole, 206 connecting pipe , 207 through hole, 208 hot air section moisture outlet, 209 observation port, 3 spiral lifting section, 301 lifting auger, 302 motor, 303 main shaft, 304 spiral blade, 305 chute, 306 bevel gearbox, 4 material conveying trough, 5 feeding ports, 6 discharging ports.

Detailed ways

The structures, proportions, sizes, etc. shown in the drawings in this specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of those who are familiar with the technology, and are not intended to limit the conditions for the implementation of the present invention. , therefore does not have technical substantive significance, any structural modification, proportional relationship change or size adjustment, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the present invention. The technical content must be able to cover the scope. At the same time, terms such as "up", "down", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and clarity, and are not used to limit the implementation of the present invention. Scope, changes or adjustments in their relative relationships, without substantial changes to the technical content, shall also be regarded as the scope of the present invention.

Below in conjunction with accompanying drawing and embodiment, the present invention is further described:

See Figures 1-9.

The invention discloses a mobile paddy drying equipment based on a combined drying process of microwave and hot air. It is arranged at the bottom and communicated up and down. One side of the paddy drying device is provided with a feeding port 5 for paddy. The middle of the groove 4 is communicated with the bottom of the hot air drying section 2, the bottom of the spiral lifting section 3 is communicated with the end of the material conveying groove 4, and the upper part of the spiral lifting section 3 is communicated with the upper part of the microwave drying section 1 through the chute 301; There is a discharge port 6 under the side wall of the spiral lifting section 3; after entering the rice from the feeding port 5, the rice is transported to the spiral lifting section 3 through the material conveying groove 4 for lifting, and then enters the microwave drying section 1 and the hot air through the chute 301 in turn. Drying section 2, and then fall into the material conveying tank 4, so that the drying cycle is repeated to a predetermined humidity, and the discharge port 6 is opened to discharge the paddy. In this case, the microwave and hot air fluidized internal circulation combined drying process is used to integrate the advantages of the two drying methods. , to achieve efficient and high-quality drying of rice; the energy consumption of the equipment using the combined drying process is also greatly reduced. According to calculations, the energy consumption can be reduced by 62.2% compared with similar equipment, and the energy saving effect is remarkable.

Working process: when starting to work, turn on the hot air blower 202 of the hot air drying section 2 and the lifting auger 301 of the screw lifting section 3, pour the wet rice into the feeding port 5, and the wet rice enters the lifting through the material conveying trough 1 connected with it. At the bottom of the auger 301, the paddy is lifted to the top by the helix 304 of the lifting auger 301, and slides into the top cavity of the microwave drying section 1 through the chute 301. When the rice begins to accumulate gradually, the microwave drying section is turned on at this time. The microwave generator 7 immediately fills the entire microwave drying cavity 101. After a certain amount of rice is accumulated (about 1/3 of the microwave drying cavity), the gate valve 105 of the discharge port at the lower part of the microwave drying section 1 is opened, and the rice is in the microwave drying section 1. Under the action of gravity, it gradually falls along the conical cavity, and enters the hot air drying cavity 201 of the hot air drying section 2 from the first discharge port 103. Under the action of gravity, the rice gradually passes through the first, second, and third baffles. It falls, and gradually moves along the air distribution plate 204 at the bottom of the cavity into the material conveying tank 4, and enters the circulation. The paddy continuously performs the above-mentioned circulation between the microwave drying section 1 and the hot air drying section 2. The temperature and humidity real-time monitoring display at port 6 judges the degree of dryness of the paddy. The initial moisture of the paddy is strictly controlled at about 14%, and the paddy is dried to a moisture content of about 14%. The discharge port valve is opened, and the motor 302 is controlled by the frequency conversion device. The dry paddy can be discharged from the discharge port 6 by reversing the screw spindle 40 .

The microwave drying section 1 includes a microwave drying cavity 101 , a first feeding port 102 and a first discharging port 103 respectively disposed at the upper and lower ends of the microwave drying cavity 101 , and a microwave emission source disposed outside the microwave drying cavity 101 . 104; the hot-air drying section 2 includes a hot-air drying cavity 201, the second feeding port and the second discharging port are respectively disposed at the upper and lower ends of the hot-air drying section 2, and the hot air blower 202 is disposed at the bottom thereof.

At least one baffle plate 203 is fixed on the inner wall of the hot air drying cavity 201. The baffle plate 203 has a conical structure, and the surface of the baffle plate 203 is evenly distributed with through holes 207 for the passage of rice. There is an air distribution plate 205 below. The air distribution plate 204 has a conical structure with air holes 205 evenly distributed thereon. A connecting pipe 206 connected to the material conveying groove 4 is arranged in the middle. By setting the baffle plate 203 Improve the heat transfer effect, so that the passing rice is fully heated. By setting the air distribution plate 204 and setting the air distribution holes 205 on it, the hot air blown by the hot air blower 202 is distributed more evenly, so that the rice is heated more evenly, and it is ensured When feeding, the moisture content of rice is more uniform.

In a preferred embodiment, the inner wall of the hot air drying chamber 201 is provided with first, second and third baffles from bottom to bottom, and the longitudinal section widths of the first and third baffles gradually increase from top to bottom. Increase, the width of the longitudinal section of the second baffle gradually decreases from top to bottom, and the rice is fluidized and slowly flows through the first, second, and third baffles in turn under the combined action of gravity and hot air. The baffle 203 has a conical structure. In this embodiment, the first and third baffles are high in the middle and low in the edge. When there is a baffle, due to the action of gravity, hot air and the first baffle, it will gradually disperse from the middle to the edge. It will gradually disperse from the middle to the edge, so that the rice will be heated more evenly, instead of being uniformly heated, and the drying speed will be faster. The tapered structure, so the heat distribution plate 204 is more evenly heated.

The lower part of the side wall of the hot air drying section 2 is provided with an observation port 209, and the upper part of the side wall is provided with at least one hot air section moisture exhaust port 208, through the hot air section moisture exhaust port 208, the wet rice is discharged by the humid air when heated by hot air, The observation port 209 facilitates the user to better observe the drying condition of the wet paddy in the hot air drying section 2 .

The microwave drying cavity 101 is composed of an upper cylindrical structure cavity and a lower funnel-shaped cavity. The first discharge port 103 is arranged at the lower end of the conical cavity, and the first discharge port 103 A discharge port gate valve 105 is provided, and the discharge port gate valve 105 includes a gate support 106 in a box-shaped structure fixed on the outer wall of the first discharge port 103. The inner wall of the gate support 106 There is a chute 108 for sliding with the gate 107, the first outlet 103 is provided with a gate hole for the gate 107 to pass through, and the cross-sectional length of the gate bracket 106 is longer than the first outlet 103. The outer diameter of the discharge port 103, by setting the discharge port gate valve 105, can wait for the rice to accumulate a certain amount (about 1/3 of the space of the microwave drying cavity) before entering the hot air drying section 2, avoiding the hot air blower in the hot air drying section 2. 202 need to be turned on together to save energy and reduce energy consumption.

The top of the microwave drying cavity 101 is provided with at least one microwave section moisture exhaust port 109 , and the side wall of the microwave drying cavity 101 is provided with a second observation port 110 , through which the wet rice is passed through the microwave section moisture exhaust port 109 . The humid air during microwave heating is exhausted, and the second observation port 110 facilitates the user to better observe the drying condition of wet rice in the microwave drying section 1. In this embodiment, the microwave section moisture exhaust port 109 is installed in the microwave drying cavity 101. On the top cover 111, the top cover 111 is installed on the top of the microwave drying cavity 110 through the installation holes. In this embodiment, four microwave section moisture exhaust ports 109 are evenly distributed on the top cover 111.

The helical lifting section 3 includes a helical lifting auger 301 and a motor 302. The lifting auger 301 includes a main shaft 303 and a helical sheet 304 arranged on the outer wall of the main shaft 303. The bottom end of the main shaft 303 is connected to the The output ends of the motor 302 are connected to each other, and the motor 302 is connected with a frequency conversion device. Preferably, in this case, the hoisting auger 301 is a right-handed screw. The main shaft 303 is reversed, which drives the helical blade 304 to reverse and discharge the dried rice from the discharge port 6 ; in this embodiment, the motor 302 and the main shaft 303 are connected through a bevel gear box 306 due to terrain reasons.

The discharge port 6 is provided with a humidity monitoring module and a temperature and humidity monitoring module, and the dryness of the paddy is judged by the temperature and humidity real-time monitoring display screen installed at the discharge port 6 of the screw lifting section 3, and the initial moisture of the paddy is strictly controlled at 14% or so, and the paddy is dried to a moisture content of about 14%.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. All equivalent transformations made by using the contents of the description and drawings of the present invention or directly or indirectly applied in the relevant technical fields are similarly included in the present invention. The invention is within the scope of patent protection.

Claims (9)

1. A portable corn drying equipment based on microwave hot-blast combination drying technology which characterized in that: the rice drying device comprises a microwave drying section (1), a hot air drying section (2) and a spiral lifting section (3), wherein the microwave drying section (1) and the hot air drying section (2) are arranged from top to bottom and are communicated up and down, a feed inlet (5) for rice is formed in one side of the rice drying device, the feed inlet (5) is communicated with the head end of a material conveying groove (4) located below the hot air drying section (2), the middle part of the material conveying groove (4) is communicated with the lower part of the hot air drying section (2), the bottom of the spiral lifting section (3) is communicated with the tail end of the material conveying groove (4), and the upper part of the spiral lifting section (3) is communicated with the upper part of the microwave drying section (1) through a chute (305); a discharge opening (27) is arranged below the side wall of the spiral lifting section (3); corn gets into the back from feed inlet (5) and carries to spiral promotion section (3) through material conveyer trough (4) and promotes back and get into microwave drying section (1), hot air drying section (2) in proper order through elephant trunk (301), then falls into material conveyer trough (4), so the circulation is dry to set humidity repeatedly, opens discharge opening (6) and unloads out corn.

2. The movable rice drying equipment based on the microwave and hot air combined drying process as claimed in claim 1, wherein: the microwave drying section (1) comprises a microwave drying cavity (101), a first feeding hole (102) and a first discharging hole (103) which are respectively arranged at the upper end and the lower end of the microwave drying cavity (101), and a microwave emitting source (104) arranged outside the microwave drying cavity (101); the hot air drying section (2) comprises a hot air drying cavity (201), a second feeding hole and a second discharging hole which are respectively arranged at the upper end and the lower end of the hot air drying section (2), and an air heater (202) arranged at the bottom of the hot air drying section.

3. the movable rice drying equipment based on the microwave and hot air combined drying process as claimed in claim 2, wherein: at least one baffle plate (203) is fixed on the inner wall of the hot air drying cavity (201), the baffle plate (203) is of a conical structure, through holes (207) for rice to pass through are uniformly distributed on the surface of the baffle plate, an air distribution plate (205) is arranged below the baffle plate (203), the air distribution plate (204) is of a conical structure, air holes (205) are uniformly distributed on the air distribution plate, and a connecting pipe (206) communicated with the material conveying groove (4) is arranged in the middle of the air distribution plate.

4. The movable rice drying equipment based on the microwave and hot air combined drying process as claimed in claim 3, wherein: the hot air drying device is characterized in that a first baffle plate, a second baffle plate and a third baffle plate are arranged on the inner wall of the hot air drying cavity (201) from bottom to bottom, the longitudinal section width of the first baffle plate and the longitudinal section width of the third baffle plate are gradually increased from top to bottom, and the longitudinal section width of the second baffle plate is gradually decreased from top to bottom.

5. The movable rice drying equipment based on the microwave and hot air combined drying process as claimed in claim 4, wherein: the lower part of the side wall of the hot air drying section (1) is provided with an observation port (209), and the upper part of the side wall is provided with at least one hot air section moisture discharging port (208).

6. The mobile rice drying equipment based on the microwave and hot air combined drying process as claimed in any one of claims 1 to 5, wherein: microwave drying cavity (101) are formed by upper portion cylindrical structure cavity and lower part toper cavity combination, first discharge gate (103) set up in the lower extreme of toper cavity, be equipped with discharge gate slide valve (105) on first discharge gate (103), discharge gate slide valve (105) are flashboard support (106) that are square frame shape structure including being fixed in on first discharge gate (103) outer wall, be equipped with on the inner wall of flashboard support (106) and be used for cooperating gliding spout (108) with flashboard (107), be equipped with the flashboard hole that is used for flashboard (107) to pass through on first discharge gate (103), flashboard support (106) cross section length is greater than the external diameter of first discharge gate (103).

7. The movable rice drying equipment based on the microwave and hot air combined drying process as claimed in claim 6, wherein: the top of the microwave drying cavity (101) is provided with at least one microwave band moisture discharging port (109), and the side wall of the microwave drying cavity (101) is provided with a second observation port (110).

8. The movable rice drying equipment based on the microwave and hot air combined drying process as claimed in claim 7, wherein: spiral promotes section (3) including being spiral lifting auger (301), motor (302), lifting auger (301) includes main shaft (303), establishes flight (304) on main shaft (303) outer wall, the bottom of main shaft (303) with the output of motor (302) links to each other, motor (302) are connected with frequency conversion equipment.

9. The movable rice drying equipment based on the microwave and hot air combined drying process as claimed in claim 8, wherein: and a humidity monitoring module and a temperature and humidity monitoring module are arranged on the discharge opening (6).