CN105300042B - Agricultural product drying equipment - Google Patents

Abstract

A kind of drying equipment for agricultural products, including a drying room, a material room is arranged in the drying room, a material vehicle is arranged in the material room, a heating room is arranged in the drying room, and the heating room is arranged on the other side of the material room, and the heating The side wall of the chamber is provided with an air inlet, a heating chamber is provided in the heating chamber, and a heating system is provided in the heating chamber, and the heating system includes a combustion furnace, a combustion-supporting fan, a heat exchanger, a circulation fan and a vertical chimney; the combustion furnace Including the furnace body, one side of the furnace body is provided with an air inlet, a material inlet and a dust removal door, the ash removal door is set at the lower part of the inlet, the air inlet of the furnace body is equipped with a combustion-supporting fan, and the upper end of the combustion furnace is equipped with a combustion chamber. The smoke outlet of the fire grate and the smoke outlet of the combustion furnace are connected to the heat exchanger; the wall between the heating room and the material room is provided with a circulation fan, and the material room is provided with a moisture discharge port connected to the material room. The invention has a simple structure, can efficiently, quickly and effectively perform the drying operation of agricultural products, realizes the reuse of waste heat, and improves the utilization efficiency of heat.

Description

Agricultural product drying equipment

technical field

The invention relates to the technical field of drying agricultural products, in particular to a drying equipment for agricultural products.

Background technique

my country is a large agricultural country, and the traditional natural drying method has been followed for thousands of years. Although the drying cost has been saved to a certain extent, this drying method has some disadvantages. First, it relies entirely on manual drying, which consumes a lot of labor; The quality declines and poses a threat to human health.

Natural drying needs to occupy a large amount of cultivated land or roads as drying yards, and there will be more impurities. Drying on the road surface will also seriously affect road traffic, causing accidents, and agricultural products are easily broken and damaged. Natural drying takes a long time and affects seed quality and germination rate. Mechanized drying effectively solves the above disadvantages. There are many types of existing drying equipment, but most of them have disadvantages such as high energy consumption, complicated operation, and uneven drying of materials.

In order to solve the above existing problems, people have been seeking an ideal technical solution.

Contents of the invention

The object of the present invention is to address the shortcomings of the prior art and provide an agricultural product drying equipment with a reasonable structure, which can realize the reuse of waste heat and improve the efficiency of heat utilization.

In order to achieve the above object, technical scheme of the present invention is:

A kind of drying equipment for agricultural products, comprising a drying room, a material room is arranged in the drying room, a material trolley is arranged in the material room, a material room door is arranged on one side of the material room, and a heating room is provided in the drying room for supplying The heat chamber is located on the other side of the material chamber, the side wall of the heat supply chamber is provided with an air inlet, the heat supply chamber is provided with a heating chamber, and the heat supply chamber is provided with a heat supply system, the heat supply system includes a combustion furnace, a combustion fan, Heat exchanger, circulating fan and vertical chimney; the combustion furnace includes a furnace body, and one side of the furnace body is provided with an air inlet, a feed port and a soot cleaning door. The tuyere is equipped with a combustion-supporting fan, and the upper end of the combustion furnace is provided with a smoke exhaust port of the combustion furnace. The smoke exhaust port of the combustion furnace is connected to the heat exchanger. A vertical chimney; a circulation fan is provided on the wall between the heating chamber and the material chamber, and the material chamber is provided with a moisture discharge port connected to the material chamber.

Preferably, the combustion furnace is an indirect coal-fired hot blast stove.

Preferably, the material chamber door is a sliding door.

Preferably, the heat exchanger includes a firebox, a heat exchange tube and a horizontal chimney, the firebox includes a left firebox and a right firebox, and the lower ends of the left firebox and the right firebox are all provided with a firebox connected to the combustion furnace smoke port. Opening, the left fire box is provided with a left ash-cleaning door, the right fire box is provided with a right ash-cleaning door, there are several rows of heat exchange tubes between the left fire box and the right fire box, and the outer circumference of the heat exchange tubes is provided with a spiral ring. Fins, one side of the left firebox or the right firebox is provided with a heat exchanger smoke outlet, the heat exchanger smoke outlet is connected to one end of the horizontal chimney, and the other end of the horizontal chimney is connected to the vertical chimney.

Preferably, the combustion air blower includes a motor, an air filter, a blower body, an air chamber, a base and a drip nozzle.

Preferably, the circulating fan is an axial fan.

Preferably, a waste heat recovery system is provided in the heating room above the heating chamber, and the waste heat recovery system includes a waste heat recovery room, a moisture exhaust pipe, and a waste heat recovery fan. The outlet is set on the wall between the material room and the waste heat recovery room, one end of the dehumidification pipe is connected to the dehumidification port, and the other end of the dehumidification pipe passes through the waste heat recovery room and then goes out from the other wall of the waste heat recovery room. The waste heat recovery fan is arranged on the wall between the waste heat recovery chamber and the heating chamber.

Preferably, the waste heat recovery fan adopts a four-bladed axial flow fan with a built-in motor direct connection structure.

Preferably, it also includes an intelligent controller. The intelligent controller includes a PLC controller, a temperature and humidity sensor and three or single-phase electric circuit protection equipment. Several temperature and humidity sensors are arranged on the upper and lower parts of the material chamber. The waste heat recovery fan, combustion-supporting fan and circulation fan are all electrically connected to the PLC controller, and the three-phase or single-phase electric circuit protection equipment is set in the power supply circuit of the waste heat recovery fan, combustion-supporting fan and circulation fan.

The invention has a simple structure, can efficiently, quickly and effectively perform the drying operation of agricultural products, realizes the reuse of waste heat, and improves the utilization efficiency of heat.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a partial view of Fig. 1;

Fig. 3 is the structural representation of combustion furnace and heat exchanger among Fig. 1;

Figure 4 is a perspective view of Figure 3;

In the figure: 1. Drying room, 2. Material room, 3. Material vehicle, 4. Circulating fan, 5. Combustion furnace, 6. Combustion fan, 7. Heating room, 8. Heat exchanger, 9. Waste heat recovery room, 10. Air inlet, 11. Humidity exhaust pipe, 12. Vertical chimney, 13. Waste heat recovery fan, 14. Humidity exhaust port, 21. Material room door, 51. Ash cleaning door, 52. Air inlet, 53. Combustion furnace Body, 54. Feed inlet, 55. Fume exhaust port, 71. Heating chamber door, 81. Left fire box, 82. Right fire box, 83. Left dust cleaning door, 84. Right dust cleaning door, 85. Heat exchange tube, 86. fin, 87. horizontal chimney.

detailed description

The technical solution of the invention will be described in further detail below through specific implementation methods.

Referring to Figures 1-4, a drying equipment for agricultural products includes a drying room 1, a material room 2 is provided in the drying room 1, a material vehicle 3 is provided in the material room 2, and a material room door 21 is provided on one side of the material room 2 , The material chamber door 21 is a sliding door, which is convenient for operation. The drying room 1 is also provided with a heating chamber, which is located on the other side of the material chamber 2, and a heating chamber 7 is arranged in the heating chamber, and a heating chamber door 71 is arranged on one side of the heating chamber 7, and the heating chamber 7 A heating system is provided, and the heating system includes a combustion furnace 5, a combustion-supporting fan 6, a heat exchanger 8, a circulation fan 4 and a vertical chimney 12; the combustion furnace 5 includes a furnace body 53, and the furnace body 53 is provided with a dust removal door 51, Air inlet 52 and feed inlet 54, dust cleaning door 51 is located at the bottom of feed inlet 54, and the air inlet 52 of body of heater 53 is provided with combustion-supporting fan 6, and the upper end of combustion furnace 5 is provided with combustion furnace exhaust port 55. Combustion furnace 5 adopts an indirect coal-fired hot blast stove. The indirect coal-fired hot blast stove uses flue gas, steam, etc. as a carrier, and heats the air through a heat exchanger. The dried material cannot be polluted, and the temperature of the hot air for drying is relatively low. Some heat-sensitive materials work well. Combustion-supporting fan 6 is composed of six parts: motor, air filter, blower body, air chamber, base (and oil tank), and oil drip nozzle. The air is sucked in, compressed and expelled by the volume change, and the blowing efficiency is high.

The exhaust gas outlet 55 of the combustion furnace is connected to the heat exchanger 8. The heat exchanger 8 includes a fire box, a heat exchange pipe 85 and a horizontal chimney 87. The fire box includes a left fire box 81 and a right fire box 82, and the left fire box 81 and the right fire box The lower end of 82 is all provided with the opening that is connected with burner smoke outlet 55, and left fire box 81 is provided with left soot cleaning door 83, and right fire box 82 is provided with right soot cleaning door 84; The left fire box 81 of heat exchanger 8 A left ash removal door 83 is provided, and the right fire box 82 is provided with a right ash removal door 84, which is convenient for cleaning the dust in the left and right fire boxes, prevents the left and right fire boxes from blocking, and improves the heat exchange efficiency of the heat exchanger 8. Between the left firebox 81 and the right firebox 82, several rows of heat exchange tubes 85 are arranged, and the outer circumference of the heat exchange tubes 85 is provided with spirally surrounded fins 86, and the heat exchange tubes 85 with fins 86 increase the heat dissipation area. , so that the heat is fully utilized and the heat exchange efficiency is improved. One side of the left firebox 81 or the right firebox 82 is provided with a heat exchanger smoke outlet, and the heat exchanger smoke outlet connects one end of the horizontal chimney 87, and the other end of the horizontal chimney 87 connects the vertical chimney 12.

A circulation fan 4 is arranged on the wall between the heating chamber 7 and the material chamber 2. The circulation fan adopts an axial flow fan, and the axial flow fan is a No. 7 axial flow fan with 4 blades. The gap of the cylinder is controlled at about 5mm, three-phase two-speed fan (power 2.2/1.5Kw) or single-phase single-speed fan (power 1.5Kw). 50Hz grid power supply, when the speed is 1440r/min, the performance parameters of the circulating fan are: the air volume is above 15000 /h, the total pressure is 170 Pa to 250 Pa, the static pressure is not less than 70 Pa, and the maximum total pressure efficiency of the whole machine is above 70%. The air cylinder is 700mm in diameter and 165mm in depth. The circulating fan 4 is powered by a motor, and the circulating fan 4 can be regulated in forward and reverse directions so that it rotates forward for a period of time and reverses for a period of time, so that the temperature in the drying room is evenly distributed.

The heating room above the heating chamber 7 is equipped with a waste heat recovery system. The waste heat recovery system includes a waste heat recovery chamber 9, a moisture discharge pipe 11 and a waste heat recovery fan 13. The air inlet 10 is located on one side of the waste heat recovery chamber 9. 14 is located on the wall between the material chamber 2 and the waste heat recovery chamber 9, one end of the dehumidification pipe 11 is connected to the dehumidification outlet 14, and the other end of the dehumidification pipe 11 passes through the waste heat recovery chamber 9 and then from the waste heat recovery chamber 9 The other wall passes through, and the waste heat recovery fan 13 is arranged on the wall between the waste heat recovery chamber 9 and the heating chamber 7. The waste heat recovery fan 13 adopts a four-blade axial flow fan with a built-in motor direct connection structure.

The hot and humid air in the material chamber 2 is discharged from the dehumidification pipe 11, and the cold air enters the waste heat recovery chamber 9 from the air inlet 10. The cold air entering the waste heat recovery chamber 9 is heated through the pipe wall of the dehumidification pipe 11, and the heated air The waste heat recovery fan 13 enters the heating chamber 7 to realize the reuse of waste heat, improve the utilization efficiency of heat, and achieve the purpose of saving energy.

The agricultural product drying equipment also includes an intelligent controller. The intelligent controller includes a PLC controller, a temperature and humidity sensor and three-phase or single-phase electric circuit protection equipment. Several temperature and humidity sensors are installed on the upper and lower parts of the material room to monitor the material. For the temperature and humidity in room 2 and the temperature and humidity difference between the upper and lower parts, the temperature and humidity sensor adopts a digital temperature and humidity sensor, which has high self-control stability, high accuracy, and accurate execution process. The temperature and humidity sensor, waste heat recovery fan, combustion-supporting fan and circulation fan are all electrically connected to the PLC controller, and the three-phase or single-phase electric circuit protection equipment is set in the power supply circuit of the waste heat recovery fan, combustion-supporting fan and circulation fan, supporting three-phase or Single-phase electric circuit protection equipment can realize short-circuit, overload, and lack of phase protection to ensure safe operation of the motor and safer baking.

Claims (7)

1. A kind of agricultural product drying equipment, comprises drying room, is provided with material room in the drying room, is provided with material car in the material room, and is provided with material room door on one side of material room, is characterized in that, also is provided with in described drying room There is a heating room, the heating room is located on the other side of the material room, the side wall of the heating room is provided with an air inlet, the heating room is provided with a heating room, and a heating system is provided in the heating room, and the heating system includes Combustion furnace, combustion-supporting fan, heat exchanger, circulation fan and vertical chimney; the combustion furnace includes a furnace body, one side of the furnace body is provided with an air inlet, a material inlet and a dust removal door, and the ash removal door is located on the side of the material inlet In the lower part, the air inlet of the furnace body is equipped with a combustion-supporting fan, and the upper end of the combustion furnace is provided with a smoke exhaust port of the combustion furnace. The smoke exhaust port of the combustion furnace is connected to a heat exchanger. The smoke outlet of the exchanger is connected to the vertical chimney; the wall between the heating chamber and the material chamber is provided with a circulating fan, and the material chamber is provided with a moisture outlet connected to the material chamber; the heating chamber above the heating chamber is equipped with There is a waste heat recovery system, and the waste heat recovery system includes a waste heat recovery room, a dehumidification pipe and a waste heat recovery fan. The air inlet is set on one side of the waste heat recovery room, and the moisture discharge port is set on the wall between the material room and the waste heat recovery room. Above, one end of the dehumidification pipe is connected to the dehumidification outlet, and the other end of the dehumidification pipe passes through the waste heat recovery chamber and then goes out from the other wall of the waste heat recovery chamber. The waste heat recovery fan is installed between the waste heat recovery chamber and the heating chamber. On the wall; the waste heat recovery fan adopts a four-blade axial flow fan with a built-in motor direct connection structure; the circulation fan is powered by the motor, and the circulation fan is regulated in forward and reverse directions so that it rotates forward for a period of time and reverses for a period of time, and then Make the temperature distribution in the drying room even. 2. The agricultural product drying equipment according to claim 1, characterized in that, the combustion furnace is an indirect coal-fired hot air stove. 3. The agricultural product drying equipment according to claim 1, wherein the material chamber door is a sliding door. 4. The agricultural product drying equipment according to any one of claims 1-3, characterized in that, the heat exchanger includes a fire box, a heat exchange tube and a horizontal chimney, and the fire box includes a left fire box and a right fire box, The lower ends of the left fire box and the right fire box are provided with openings connected with the exhaust port of the combustion furnace. There are several rows of heat exchange tubes in between, and the outer circumference of the heat exchange tubes is provided with spirally surrounded fins. One side of the left or right fire box is provided with a heat exchanger smoke outlet, and the heat exchanger smoke outlet is connected to the horizontal One end of the chimney, the other end of the horizontal chimney connects the vertical chimney. 5 . The agricultural product drying equipment according to claim 4 , wherein the combustion-supporting blower comprises a motor, an air filter, a blower body, an air chamber, a base and a drip nozzle. 6. The agricultural product drying equipment according to claim 5, wherein the circulation fan is an axial flow fan. 7. The agricultural product drying equipment according to claim 1, characterized in that it also includes an intelligent controller, the intelligent controller includes a PLC controller, a temperature and humidity sensor and three or single-phase electric circuit protection equipment, several temperature and humidity Sensors are set on the upper and lower parts of the material room, temperature and humidity sensors, waste heat recovery fan, combustion-supporting fan and circulation fan are all electrically connected to the PLC controller, and three-phase or single-phase electric circuit protection equipment is installed on the waste heat recovery fan, combustion-supporting fan and In the power supply circuit of the circulating fan.