CN106907906A - Multi-level network cylindrical dryer - Google Patents

Abstract

This application relates to a dryer, in particular to a multi-stage mesh cylinder dryer; it includes a connected heat source chamber and a drying chamber, a circulation fan capable of sending hot air from the heat source chamber to the head of the drying chamber, The return air passage, power equipment and feeding device across the heat source chamber and the drying chamber; the two ports of the return air passage communicate with the end of the heat source chamber and the drying chamber respectively; a rack is installed in the drying chamber, and at least Two net cylinders driven by power equipment and can rotate along their own axes, the axes of all net cylinders form a continuous fold line. Due to the implementation of the above technical scheme, the application passes through the multi-layer mesh cylinder, the material can be interacted with the hot air flow for a long time, the drying is uniform and rapid, the quality of the finished product is high, and the work efficiency is high; the heat utilization rate can reach more than 90%, reducing energy consumption , to reduce pollution; in addition, this application has a compact structure, eliminating the long air duct in the past, and occupies a small area, which is convenient for use and promotion.

Description

Multi-stage mesh drum dryer

technical field

The present application relates to a dryer, in particular to a multi-stage mesh cylinder dryer.

Background technique

At present, dryers, especially grain dryers, especially high-temperature hot-air tower dryers, use high-temperature and quick-drying treatment (temperatures as high as 120°C-190°C), and the drying process is downstream, countercurrent, and mixed. The high-temperature hot air is used to dry the grain, especially the grain of the material containing more than 35% water. Although the daily output of this high-temperature hot-air tower dryer is relatively high, it has the following disadvantages: (1) The high-temperature hot-air tower dryer has large equipment, high cost, and long drying distance, which is not conducive to the development of farmers and cooperatives. (2) The hot blast stove burns crushed bituminous coal, which has low calorific value, high energy consumption, and serious pollution, which is not conducive to energy saving and environmental protection; (3) The heat exchanger adopts external exchange, so the loss of heat energy is huge, and the dead angle of ventilation cannot Elimination, resulting in insufficient and uneven drying of materials; (4) The hot air is used for one-time use, and its utilization rate can only reach 60-65%, and the waste heat cannot be used; (5) The material grains are dried by high-temperature hot air Roasting, the internal and external moisture cannot get the drying speed of balanced dehydration, causing the starch in the material to gelatinize, the surface is scorched, the quality of the material after drying is reduced, and the condition of losing high-end product raw materials reduces the use value of the material and the purchase price. Farmers' income is reduced.

Another type of unit dryer sends the materials into the drying chamber for dehydration. Although the drying effect is good and the quality has been improved, it takes a long time because the materials enter the drying chamber in a fixed amount or at a very slow flow rate. Drying, the work efficiency is low.

Contents of the invention

The purpose of this application is to propose a multi-stage mesh drum dryer with simple structure, excellent performance, good drying effect, reduced energy consumption, improved drying efficiency, and improved social benefits.

This application is achieved in this way: a multi-stage mesh drum dryer, which includes a connected heat source chamber and a drying chamber, a circulation fan that can send the hot air in the heat source chamber to the head of the drying chamber, span the heat source chamber and the drying chamber. The air return duct, power equipment, and feeding device of the chamber; the two ports of the air return duct communicate with the heat source chamber and the end of the drying chamber respectively; The net cylinder that can rotate along its own axis, the axes of all the net cylinders form a continuous broken line, the head end of the net cylinder is high, the tail end is bottom, the head end of each net cylinder is provided with a feed port, and the tail end of each net cylinder A discharge port is provided, and the feed port of the net tube on the highest layer is connected with the feeding device, and the feed ports of the net tubes of the remaining layers are connected with the discharge ports of the net tube of the upper layer correspondingly.

Further, the feeding device includes a two-way conveyor, a metering bin, a grain flow pipe, and a cooling conveyor belt; the metering bin is located above the top net tube, and the lower end of the metering bin is connected to the feed port of the top net tube through the grain flow tube; The input end of the two-way conveyor is located directly below the outlet of the net cylinder at the bottom layer, one of the output ends of the two-way conveyor is connected to the input end of the cooling conveyor belt, and the output end of the cooling conveyor belt is connected to the metering bin.

Further, both ends of the mesh cylinder are provided with raceways; the frame is provided with diagonal braces corresponding to the number of mesh cylinders, and the two ends of the diagonal braces can slide up and down respectively and are fixed on the frame. The supporting wheel that supports the net cylinder and can drive the net cylinder to rotate through the friction with the upper raceway of the net cylinder, the tug wheel is electrically connected with the power equipment; the net cylinder is seated on the corresponding diagonal support.

Further, a fan room is provided between the heat source room and the drying room, and the fan room is provided with a heat source air outlet communicating with the heat source room and at least one drying air outlet communicating with the drying room. A circulating fan that sends air from the tuyere to the drying chamber; or/and, the heat source chamber is provided with a heat source machine and a heat exchanger connected together, and the end of the heat exchanger is installed with a pipe located outside the heat source chamber through a pipeline passing through the top of the heat source chamber Induced fan; the wall of the heat source room is equipped with a cold air door that can adjust the temperature.

Further, the discharge port at the end of the mesh cylinder is connected with a collection device; the bottom layer of the collection device passes through the bottom wall of the drying chamber and is connected to the input end of the two-way conveyor, and the collection devices of the remaining layers are connected to the next layer of the mesh cylinder feed port.

Further, the air return duct is fixedly installed on the top of the heat source room and the drying room, and the return air duct is equipped with at least one set of dehumidification outlets or louvers; the metering bin is fixedly installed on the top of the return air duct, and the flow pipe passes through The air duct is connected with the feeding port of the highest layer net cylinder.

Further, the inner walls of the heat source room, the fan room and the drying room are all provided with insulation boards, and the heat source room, the fan room and the drying room are all provided with inspection doors.

Furthermore, the multi-stage mesh drum dryer also includes an automatic control center; the metering bin is equipped with an upper material level device and a lower material level device, and the bottom of the metering bin is connected with a seed puller; the automatic control center is connected with the power equipment, Circulation fan, two-way conveyor, cooling conveyor belt, cold air door, upper material level device, lower material level device, and seed puller are electrically connected.

Due to the implementation of the above-mentioned technical scheme, this application uses the cooperation of the circulating fan and the air return duct, and the hot air in the heat source chamber returns to the heat source chamber through the drying chamber and the air duct to form energy recycling; the material enters the multi-layer net cylinder from the feeding device , under the rotation of the mesh cylinder, the material is loosely suspended, and while fully contacting with the hot air flow through it to dry, it moves to the end of the mesh cylinder and enters the next layer of mesh cylinder. After passing through the multi-layer mesh cylinder, the material can grow Time and hot air flow effect, drying evenly and quickly, high-quality finished products, high work efficiency; heat utilization rate can reach more than 90%, reduce energy consumption, reduce pollution; in addition, the application has a compact structure, eliminating the long air duct in the past , small footprint, easy to use and promote.

Description of drawings: the specific structure of the application is provided by the following drawings and examples:

Fig. 1 is the perspective structure schematic diagram of the preferred embodiment of the present application;

Fig. 2 is a schematic diagram of the external structure of Fig. 1;

Fig. 3 is a left view structural diagram of Fig. 2 .

Legend: 1. Heat source room, 2. Drying room, 3. Circulating fan, 4. Return air duct, 5. Rack, 6. Mesh tube, 7. Inlet, 8. Outlet, 9. Two-way conveying Machine, 10. Measuring bin, 11. Grain flow pipe, 12. Cooling conveyor belt, 13. Raceway, 14. Diagonal brace, 15. Supporting wheel, 16. Fan room, 17. Heat source tuyere, 18. Drying tuyere, 19. Heat source machine, 20. Heat exchanger, 21. Cold air door, 22. Collection device, 23. Dehumidification shutter, 24. Inspection door, 25. Upper material level device, 26. Lower material level device, 27. Dial Seed device, 28. induced draft fan, 2. automatic control center.

detailed description:

The present application is not limited by the following examples, and specific implementation manners can be determined according to the technical solutions of the present application and actual conditions.

As shown in Figures 1 to 3, the multi-stage mesh cylinder 6-type dryer includes a connected heat source chamber 1 and a drying chamber 2, a circulation fan 3 that can send the hot air in the heat source chamber 1 to the head of the drying chamber 2, and a The return air passage 4, power equipment, and feeding device of the heat source chamber 1 and the drying chamber 2; the two ports of the return air passage 4 communicate with the tail ends of the heat source chamber 1 and the drying chamber 2 respectively; the drying chamber 2 is equipped with a rack 5. At least two net tubes 6 driven by power equipment and rotatable along their own axes are installed on the frame 5. The axes of all net tubes 6 form a continuous broken line. The head end of the net tube 6 is high and the tail end is bottom. The head end of net cylinder 6 is provided with feed inlet 7, and the tail end of each net cylinder 6 is provided with discharge outlet 8, and the feed inlet 7 of net cylinder 6 of the highest layer is connected with feeding device, and the net cylinder 6 of other layers The feed port 7 of the feed port is connected to the discharge port 8 of the net cylinder 6 of the upper layer correspondingly.

When working, the heat in the heat source chamber 1 is blown into the drying chamber 2 through the circulation fan 3. At this time, the internal pressure of the drying chamber 2 increases sharply, and the pressure in the heat source chamber 1 gradually decreases, forming a pressure difference; the drying chamber 2 The high-pressure hot air inside penetrates through each corner of the mesh cylinder 6 and the drying chamber 2; at this time, the material enters the multi-layer mesh cylinder 6 from the feeding device, and the material is loosely suspended under the rotation of the mesh cylinder 6 and the penetration of the lower high-pressure hot air. While being in full contact with the hot air coming through to dry, it moves to the tail end of the net cylinder 6 under the action of its own weight and enters the net cylinder 6 of the next layer. The material flows out and collects after passing through the multi-layer net cylinder 6. The broken line path, dynamic contact with the hot air flow for a long time, the drying is rapid and uniform, and the material molding quality is high; when the hot air in the drying chamber 2 takes away the moisture of the material, it enters the return air channel 4 and flows to the heat source chamber in the negative pressure area 1 and secondary heating to form a cycle.

The application has a compact structure, the heat source chamber 1, the drying chamber 2 and the air return duct 4 are integrally constructed, and heat exchange is carried out inside, and the heat loss is extremely small; the heat is recycled, the energy consumption is small, the pollution is small, and the drying effect is extremely good good. The defects of "high energy consumption, poor drying quality, and serious pollution" of the existing tower dryer are eliminated, and social benefits are improved, which is beneficial to the use and promotion of farmers and cooperatives.

As shown in Figures 1 to 3, the feeding device includes a two-way conveyor 9, a metering bin 10, a flow grain pipe 11 and a cooling conveyor belt 12; 11 is connected to the feed inlet 7 of the net cylinder 6 on the highest level; the input end of the two-way conveyor 9 is located directly below the discharge port 8 of the bottom net cylinder 6, and one of the output ends of the two-way conveyor 9 is connected to the cooling conveyor belt 12 The input end of the cooling conveyor belt 12 is connected to the metering bin 10 at the output end.

When the material particles are large and the material type is not easy to dry, the output end of the two-way conveyor 9 can be transferred to the cooling conveyor belt 12, and the material that has been dried once can be sent back to the metering bin 10 for a second time. Even multiple times of drying; during the transportation process of the cooling conveyor belt 12, the material is cooled to reduce the temperature, which is convenient for improving the drying effect of the next time. When one drying can meet the demand, the output end of the two-way conveyor 9 is turned to the other direction, and the material can be directly collected from the discharge port 8 of the net cylinder 6 at the bottom. If the moisture content of the material is low, it is not necessary to carry out the cooling cycle through the cooling conveyor belt 12, and this process flow can be changed; the cooling conveyor belt 12 is not used for cooling and can be used as an upper raw material conveyor, and the two-way conveyor 9 becomes one-way, and is changed to discharge conveyor.

As shown in Figure 1, the two ends of the mesh cylinder 6 are provided with raceways 13; the frame 5 is provided with diagonal braces 14 corresponding to the quantity of the mesh cylinder 6, and the two ends of the diagonal braces 14 can slide up and down respectively and are fixed on the frame. 5, on the diagonal brace 14, fixed installation is used to support the net tube 6 and can drive the supporting wheel 15 that the net tube 6 rotates by the frictional force with the raceway 13 on the net tube 6, and the tugboat is electrically connected with the power equipment; 6 net tubes On the corresponding diagonal brace 14. In this way, the oblique angle of the diagonal brace 14 can be adjusted by changing the fixed points at both ends of the diagonal brace 14, thereby changing the flow velocity of the material in the mesh cylinder 6, so that drying efficiency and drying effect are equal. Supporting roller 15 contacts friction with raceway 13, relies on this frictional force to drive each net tube 6 to rotate. The net drum can also be rotated by a sprocket or a chain or a gear or other existing transmission methods.

As shown in Figure 1, a fan room 16 is provided between the heat source room 1 and the drying room 2, and the fan room 16 is provided with a heat source tuyere 17 communicating with the heat source room 1 and at least one drying tuyere 18 communicating with the drying room 2 , at least one circulating fan 3 that can supply air to the drying chamber 2 through the drying outlet 18 is installed in the fan chamber 16; or/and, the heat source chamber 1 is provided with a heat source machine 19 and a heat exchanger connected together 20. The end of the heat exchanger 20 is installed with an induced draft fan 28 located outside the heat source chamber 1 through a pipeline passing through the top of the heat source chamber 1;

As shown in Figure 1, the discharge port 8 at the tail end of the mesh cylinder 6 is connected with a collection device 22; The material collecting device 22 is connected to the feeding port 7 of the next layer of net cylinder 6 .

As shown in Figures 1 and 2, the return air passage 4 is fixedly installed on the top of the heat source chamber 1 and the drying chamber 2, and the return air passage 4 is equipped with at least one set of moisture discharge ports or moisture discharge louvers 23; the metering chamber 10 is fixedly installed on the At the top of the air return duct 4, the grain flow pipe 11 passes through the air return duct 4 and is connected to the feeding port 7 of the highest layer of net cylinder 6. In this way, during the circulation process, when the hot air with little heat returns to the heat source chamber 1 and passes through the return air duct 4, the water vapor is discharged from the dehumidification louvers 23 on both sides; it is beneficial to improve the drying effect.

As shown in FIG. 2 , the inner walls of the heat source chamber 1 , the fan chamber 16 and the drying chamber 2 are all provided with insulation boards, and the heat source chamber 1 , the fan chamber 16 and the drying chamber 2 are all provided with maintenance doors 24 .

As shown in Figure 1, the multi-stage mesh cylinder 6-type dryer also includes an automatic control center 29; an upper material level device 25 and a lower material level device 26 are arranged in the metering bin 10, and a seed puller is connected to the bottom of the metering bin 10 27; the automatic control center 29 is electrically connected with the power equipment, the circulating fan 3, the two-way conveyor 9, the cooling conveyor belt 12, the cold air door 21, the upper material level device 25, the lower material level device 26, and the seed puller 27 respectively.

The amount of material in the metering bin 10 can be obtained through the upper material level device 25 and the lower material level device 26, so that the flow rate of the material flowing out of the metering bin 10 can be changed by adjusting the seed dial 27; the rotating speed of the drum can be changed through power equipment; The temperature in the heat source chamber 1; the flow velocity of the hot air is changed by the circulation fan 3. The automatic control center 29 can automatically control the drying process after comparing the actual situation with the set value.

The screen surface of automatic control center 29 can show temperature, and metal digital thermometer can be housed on the frame 5, is convenient to long-distance observation drying chamber 2 internal temperature situation.

The above technical features constitute the best embodiment of this application, which has strong adaptability and best implementation effect, and non-essential technical features can be added or subtracted according to actual needs to meet the needs of different situations.

Claims (10)

1. A multi-stage mesh drum dryer, including a connected heat source chamber and a drying chamber, a circulation fan that can send hot air from the heat source chamber to the head of the drying chamber, and a return air that spans the heat source chamber and the drying chamber Road, power equipment, feeding device; the two ports of the return air duct communicate with the end of the heat source room and the drying room respectively; The net cylinder that can rotate along its own axis, the axes of all the net cylinders form a continuous broken line, the head end of the net cylinder is high, the tail end is bottom, the head end of each net cylinder is provided with a feed port, and the tail end of each net cylinder A discharge port is provided, and the feed port of the net tube on the highest layer is connected with the feeding device, and the feed ports of the net tubes of the remaining layers are connected with the discharge ports of the net tube of the upper layer correspondingly. 2. The multi-stage mesh drum dryer according to claim 1, characterized in that: the feeding device includes a two-way conveyor, a metering bin, a grain flow pipe and a cooling conveyor belt; the metering bin is located above the highest layer of the mesh drum, The lower end of the metering bin is connected to the feed port of the top mesh cylinder through the grain flow pipe; the input end of the two-way conveyor is located directly below the discharge port of the bottom mesh cylinder, and one of the output ends of the two-way conveyor is connected to the cooling conveyor belt. The input end, the output end of the cooling conveyor belt is connected to the metering bin. 3. The multi-stage mesh cylinder dryer according to claim 1 or 2, characterized in that: both ends of the mesh cylinder are provided with raceways; the frame is provided with diagonal braces corresponding to the number of mesh cylinders, and the diagonal braces The two ends of the frame can be slid up and down respectively and fixed on the frame. The supporting wheels are fixedly installed on the braces to support the net cylinder and drive the rotation of the net cylinder through the friction with the upper raceway of the net cylinder. The tug wheel is electrically connected with the power equipment. ; The net tube is seated on the corresponding diagonal brace. 4. The multi-stage mesh cylinder dryer according to claim 1 or 2, characterized in that: a fan room is provided between the heat source room and the drying room, and a heat source tuyere connected to the heat source room and a drying room are provided in the fan room. At least one drying outlet connected to the drying room, at least one circulating fan that can supply air to the drying room through the drying outlet is installed in the fan room; or/and, the heat source room is provided with a heat source machine and a heat exchanger connected together , the end of the heat exchanger is installed with an induced draft fan located outside the heat source chamber through a pipeline passing through the top of the heat source chamber; the wall of the heat source chamber is provided with a cold air door that can adjust the temperature. 5. The multi-stage mesh cylinder dryer according to claim 1 or 2, characterized in that: the discharge port at the tail end of the mesh cylinder is connected with a collection device; the bottommost collection device passes through the bottom wall of the drying chamber and The input end of the two-way conveyor is connected, and the collecting devices of the remaining layers are connected to the feeding port of the next layer of net cylinder. 6. The multi-stage mesh cylinder dryer according to claim 3, characterized in that: the discharge port at the tail end of the mesh cylinder is connected with a collecting device; The input end of the machine is connected, and the collecting device of the other layers is connected to the feeding port of the next layer of net cylinder. 7. The multi-stage mesh cylinder dryer according to claim 1, characterized in that: the return air duct is fixedly installed on the top of the heat source chamber and the drying chamber, and the return air duct is equipped with at least one set of moisture exhaust ports or exhaust air outlets. Wet louvers; the metering bin is fixedly installed on the top of the air return duct, and the grain flow pipe passes through the air return duct and is connected to the feed port of the top mesh cylinder. 8. The multi-stage mesh cylinder dryer according to claim 1, characterized in that: the heat source chamber, the fan chamber, and the inner walls of the drying chamber are all provided with insulation boards, and the heat source chamber, the fan chamber, and the drying chamber are all With access door. 9. The multi-stage cylinder dryer according to claim 1 or 2 or 6 or 7 or 8, characterized in that: the multi-stage cylinder dryer also includes an automatic control center; The material level indicator, the lower material level indicator, and the bottom of the metering bin are connected with a seed puller; the automatic control center is respectively connected with the power equipment, circulation fan, two-way conveyor, cooling conveyor belt, cold air door, upper material level indicator, and lower material level indicator. , The seed puller is electrically connected. 10. The multi-stage mesh drum dryer according to claim 3, 4 or 5, characterized in that: the multi-stage mesh drum dryer also includes an automatic control center; The lower material level device and the bottom of the metering bin are connected with a seed puller; the automatic control center is connected with the power equipment, circulating fan, two-way conveyor, cooling conveyor belt, cold air door, upper material level device, lower material level device, and seed puller. Electrically connected.