Mixed flow room type dryer

Abstract

The utility model discloses a mixed flow room type dryer which comprises a bin body, a lifting mechanism arranged on one side of the bin body and a heat source mechanism arranged outside the bin body, and the lifting mechanism is used for transporting grain from the bottom of the bin body of the dryer to the top of the bin body; the bin body comprises a slow-release layer located at the upper end, a drying layer arranged below the slow-release layer and a discharging area located at the bottom of the bin body, a hot ventilation channel and a grain stirring mechanism are arranged in the middle of the drying layer, and the hot ventilation channel is connected with the heat source mechanism; a heat preservation layer is arranged in the bin body, and the hot ventilation channel, the drying layer and the heat preservation layer form a hot air circulation channel. A hot air circulation flowing system is formed in the bin body of the dryer, hot air is recycled and circulated, a mixed-flow type drying system is formed, and the drying quality of grains is improved on the premise that the grain drying precipitation rate is not affected in a low-temperature drying and intermittent circulation mode.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of drying machines, in particular to a mixed flow room type drying machine. Background Art

[0002] By drying and dehydrating grains, the shelf life of grains can be extended. This is mainly used in the preservation technology of grains and grain seeds. Grains and seeds are heated and dried by dryers to reduce their moisture content and extend their shelf life.

[0003] Existing dryers generally use heat pumps and fans to dry grains in the dryer, mainly relying on the contact between hot air and grains, and heat exchange with grains and seeds based on the heat in the hot air to achieve the purpose of grain dehydration and drying. Since the current dryers mainly use continuous dry hot air in conjunction with circulating or tumbling grains to dry during the drying process, continuous heating and drying consumes a lot of energy, and the moisture in the grains flows slowly, and the cycle of the grains circulating up and down in the dryer is too long, which makes the grains prone to cracking and damage, affecting the processing quality of grain drying. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art. The utility model provides a mixed flow room dryer, which forms a hot air circulation system in the dryer bin to recover and circulate the hot air to form a mixed flow drying system. Through low-temperature drying and intermittent circulation, the drying quality of grain is improved without affecting the drying precipitation rate of the grain.

[0005] The utility model provides a mixed flow room type drying machine, which comprises: a warehouse, a lifting mechanism arranged on one side of the warehouse, and a heat source mechanism arranged outside the warehouse, wherein the lifting mechanism is used to transport grain from the bottom of the warehouse of the drying machine to the top of the warehouse;

[0006] The silo body comprises: a relief layer at the upper end, a drying layer arranged below the relief layer, and a material unloading area at the bottom of the silo body, the drying layer is provided with a heat ventilation channel and a grain transfer mechanism, and the heat ventilation channel is connected to the heat source mechanism;

[0007] A heat preservation layer is arranged in the warehouse body, and the hot ventilation channel, the drying layer and the heat preservation layer form a hot air circulation channel.

[0008] Furthermore, the heat ventilation channel is arranged in the middle of the warehouse body, and the grain allocation mechanism is located on both sides of the heat ventilation channel.

[0009] Furthermore, a plurality of hair dryers are disposed inside the bottom end of the hot ventilation channel, and air outlets of the plurality of hair dryers face the interior of the warehouse body.

[0010] Furthermore, the lifting mechanism includes: a chain transmission mechanism, a feeding pipe and a lifting motor, the lifting motor is driven and connected to the chain transmission mechanism, and a grain carrying plate is arranged on the chain transmission mechanism, and the grain is lifted and transported based on the grain carrying plate.

[0011] Furthermore, a spiral stirring mechanism is provided at the feed inlet position on the top of the silo body, and the bottom pipe opening of the discharge pipe is connected to the spiral stirring mechanism. The spiral stirring mechanism includes a material distribution platform and an electric screw arranged above the material distribution platform, and one end of the electric screw is connected to a rotary drive motor, and the rotary drive motor is used to drive the electric screw to rotate.

[0012] Furthermore, the electric screw is provided with spiral blades, and the electric screw is used to realize axial conveyance of grains based on the spiral blades.

[0013] Furthermore, an outer shell is provided outside the warehouse body, the outer shell covers the outer surface of the warehouse body, and a preset distance is formed between the outer shell and the outer surface of the warehouse body, and the thermal insulation layer is formed based on the preset distance.

[0014] Furthermore, the drying layer inside the bin body is provided with a plurality of angular boxes, the plurality of angular boxes cover the drying layer area, and the angular boxes are connected to the heat ventilation channel.

[0015] Furthermore, the angular box is a triangular prism structure, and one side edge of the triangular prism structure faces the top of the warehouse body.

[0016] Furthermore, the grain distribution mechanism includes a plurality of grain distribution wheels and a plurality of grain distribution triangle seats, and a grain distribution wheel is arranged on both sides of the bottom of any grain distribution triangle seat.

[0017] The utility model provides a mixed flow room type drying machine, which forms a hot air circulation system in the bin body of the drying machine to recycle the hot air to form a mixed flow drying system, and improves the drying quality of grains by low-temperature drying and intermittent circulation without affecting the drying precipitation rate of grains. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a mixed flow chamber type drying machine in an embodiment of the utility model;

[0020] Figure 2 It is a structural cross-sectional view of a mixed flow chamber type drying machine in an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the lifting mechanism in the embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the rotary stirring mechanism in the embodiment of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the grain discharge mechanism in the embodiment of the utility model. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Figure 1 The structure diagram of the mixed flow room type drying machine in the embodiment of the utility model is shown. Figure 2 A structural sectional view of a mixed-flow chamber dryer in an embodiment of the utility model is shown, wherein the dryer comprises: a bin body 1, a lifting mechanism 2 arranged on one side of the bin body 1, and a heat source mechanism arranged outside the bin body 1, wherein the lifting mechanism 2 can transport grains from the bottom of the bin body 1 of the dryer to the top of the bin body 1, so that the grains can be input from the top of the bin body 1 into the inside of the bin body 1 for heating and drying.

[0026] The silo body 1 includes: a soothing layer 11 at the upper end, a drying layer 12 arranged below the soothing layer 11, and a material unloading area at the bottom of the silo body 1. The drying layer 12 is provided with a heat ventilation channel 5 and a grain transfer mechanism 7. The heat ventilation channel 5 is connected to the heat source mechanism. The heat source mechanism can input heat into the silo body 1 through the heat ventilation channel 5, so that the dryer can heat and dry the grain in the silo body 1.

[0027] The silo 1 is provided with a heat preservation layer 6, and the hot ventilation channel 5, the drying layer 12 and the heat preservation layer 6 form a hot air circulation channel. The grain in the silo 1 is dried by mixed flow circulation based on the hot air circulation channel, which can effectively control the rate of moisture reduction of the grain and improve the reliability of grain drying.

[0028] Specifically, the relief layer 11 is arranged above the drying layer 12, so that when the grain enters the interior of the silo 1 from the top of the silo 1, it can be temporarily stored in the relief layer 11, that is, the falling rate of the grain is reduced, and the grain is prevented from circulating in the silo 1 too fast during the cyclic heating and drying, thereby ensuring that the grain has sufficient drying time and improving the drying effect of the grain.

[0029] Furthermore, based on the relief layer 11, a buffer storage space is provided for the lifting mechanism 2, so that when external equipment feeds grain into the dryer, the dryer can adapt to the feeding rate of the grain, and when the grain is circulated and heated inside the dryer, the transmission rate of the grain inside the dryer can be adjusted to improve the drying effect.

[0030] The heat ventilation channel 5 is arranged in the middle of the warehouse body 1, and the grain allocation mechanism 7 is located on both sides of the heat ventilation channel 5. Based on the centrally arranged heat ventilation channel 5, the heat ventilation channel 5 can transport hot air to both sides of the warehouse body 1, thereby improving the uniformity of heat diffusion inside the warehouse body 1.

[0031] Specifically, a plurality of hair dryers are arranged inside the bottom end of the hot ventilation channel 5, and the air outlets of the plurality of hair dryers are directed toward the interior of the warehouse body 1, that is, the air outlets of the plurality of hair dryers are directed upward, so that when the heat source mechanism transmits heat to the plurality of hair dryers, the plurality of hair dryers can convert the heat into hot air and transmit it to the interior of the warehouse body 1, thereby realizing the processing and drying operation of the grain inside the warehouse body 1.

[0032] Specifically, Figure 3The schematic diagram of the structure of the lifting mechanism 2 in the embodiment of the utility model is shown; the lifting mechanism 2 comprises: a chain transmission mechanism 22, a feeding pipe 23 and a lifting motor 21, the lifting motor 21 is connected to the chain transmission mechanism 22, a grain carrying plate is arranged on the chain transmission mechanism 22, and the grain is lifted and transported based on the grain carrying plate, so that the grain can be lifted to the top of the silo 1. The feeding pipe 23 is arranged obliquely, and one end of the feeding pipe 23 is connected to the top of the chain transmission mechanism 22, and the other end is connected to the feeding port at the top of the silo 1. The chain transmission mechanism 22 lifts and transports the grain to the top pipe port of the feeding pipe 23, so that the grain can pass through the feeding pipe 23 and fall into the silo 1, so as to be heated and dried in the silo 1.

[0033] Specifically, Figure 4 A schematic structural diagram of a rotary stirring mechanism in an embodiment of the utility model is shown; a spiral stirring mechanism 3 is arranged at the feed inlet position on the top of the bin body 1, the bottom pipe opening of the discharge pipe 23 is connected to the spiral stirring mechanism 3, the spiral stirring mechanism 3 comprises a material distribution platform 33 and an electric screw 32 arranged above the material distribution platform 33, one end of the electric screw 32 is connected to a rotary drive motor 31, the rotary drive motor 31 is used to drive the electric screw 32 to rotate, the electric screw 32 is provided with spiral blades, and the electric screw 32 can realize axial conveying of grain based on the spiral blades.

[0034] Furthermore, the electric screw 32 is located above the material distribution platform 33, and the material distribution platform 33 is a triangular platform structure, so that the material distribution platform 33 has two symmetrically distributed inclined surfaces, so that the grain can fall downward along the two inclined surfaces into the silo 1. Based on the spiral stirring mechanism 3, the grain can be transported along the axis, so that the grain can cover most of the area on the top of the silo 1, thereby improving the uniformity of the grain entering the silo 1. At the same time, it can avoid the accumulation of grain in a partial area of ​​the drying layer 12 of the silo 1, thereby improving the drying effect of the silo 1 on the grain.

[0035] Specifically, an outer shell 8 is provided on the outside of the silo 1, and the outer shell 8 covers the outer surface of the silo 1, and a preset distance is formed between the outer shell 8 and the outer surface of the silo 1, and an insulation layer 6 is formed based on the preset distance. The insulation layer 6 is used to maintain the working heating temperature inside the silo 1. Based on the outer shell 8, the heat loss inside the silo 1 is reduced, so that the food inside the silo 1 can be fully heated and dried, thereby improving the working efficiency of the dryer and the reliability of the drying work.

[0036] Furthermore, based on the insulation layer 6 formed by the outer shell 8, the direction of the hot air in the warehouse body 1 can be restricted, so that the hot air moves downward through the insulation layer 6, that is, the hot air inside the warehouse body 1 can flow around the outside of the warehouse body 1, thereby improving the insulation effect of the warehouse body 1 and improving the heating and drying effect of the warehouse body 1 on the grain.

[0037] Furthermore, dust collecting hoods are provided on both sides of the mixed flow chamber dryer, and the dust collecting hoods are used to block and collect the dust raised when the grain inside the silo 1 falls.

[0038] Specifically, the drying layer 12 inside the warehouse body 1 is provided with a plurality of angular boxes, and the plurality of angular boxes cover the drying layer 12 area, and the angular boxes are connected to the heat ventilation channel 5. The heat source component transports hot air to the drying layer 12 of the warehouse body 1 through the heat ventilation channel 5, so that the hot air can be dissipated in the drying layer 12 through the angular boxes. Based on the angular boxes, the hot air can be guided to be transported in the drying layer 12 of the warehouse body 1, thereby improving the uniformity of the contact between the hot air and the internal space of the drying layer 12, thereby improving the drying effect of the grain inside the warehouse body 1.

[0039] Furthermore, the corner box is a triangular prism structure, and one side edge of the triangular prism structure faces the top of the silo body 1, so that when the grain falls from the top of the silo body 1, it can contact the edge of the corner box and fall down along the side of the corner box, thereby avoiding the accumulation of grain on the corner box. At the same time, it can avoid the grain from clogging the air outlet gap of the corner box, thereby ensuring the air outlet effect of the hot air flow in the corner box and improving the drying effect of the drying layer 12 in the silo body 1 on the grain.

[0040] Furthermore, both ends of the angle box are arranged as air outlets, and the air outlets of the angle box are arranged on the side walls of the bin body 1 , so that the hot air inside the dryer can be dissipated outward along the side walls of the bin body 1 .

[0041] Specifically, the hot air flow direction of the dryer is as follows: based on the heat source mechanism cooperating with the hot ventilation channel 5, hot air is generated, and flows from bottom to top along the hot ventilation channel 5 to the inside of the warehouse body 1, and flows laterally distributed along a number of angular boxes in the drying layer 12, so that the hot air is fully diffused in the drying layer 12, contacts with the grain in the drying layer 12, and takes away the moisture of the grain; the hot air inside the drying layer 12 is discharged outside the warehouse body 1 through the air outlets on both sides of the angular boxes and the air outlet gaps on the side walls of the warehouse body 1, and moves downward along the outer wall of the warehouse body 1 based on the obstruction of the outer shell 8, passes through the hot ventilation channel 5 again to circulate and heat the inside of the warehouse body 1, and when the hot air passes through the hot ventilation channel 5 again, the moisture of the hot air can be dried and dehydrated based on the heat source mechanism, thereby ensuring the drying effect of the hot air circulation inside the warehouse body 1 on the grain.

[0042] Furthermore, based on the hot air circulation flow inside the silo 1, a mixed flow drying form is formed, which can ensure the drying effect of the grain, while reducing the risk of grain breakage during the drying process and improving the processing quality of grain drying.

[0043] Specifically, a grain-distributing mechanism 7 is provided below the drying layer 12. The grain-distributing mechanism 7 includes a plurality of grain-distributing wheels and a plurality of grain-distributing triangular seats. A grain-distributing wheel is provided on both sides of the bottom of any grain-distributing triangular seat. The grain-distributing wheel can be used to displace and discharge the grain dropped from the drying layer 12. When the silo 1 is drying, a large amount of grain is easily accumulated at the bottom of the silo 1, which blocks the grain outlet at the bottom of the silo 1. The grain-distributing triangular seats are used to distribute the grain to avoid the grain from being concentrated in a certain area at the bottom of the silo 1, thereby improving the uniformity of the grain distribution at the bottom of the silo 1. The grain-distributing wheel can also drive the fluidity of the grain at the bottom of the silo 1, so that the grain at the bottom of the silo 1 can be discharged from the bottom.

[0044] Specifically, Figure 5 The structural schematic diagram of the grain discharge mechanism 9 in the embodiment of the utility model is shown. The grain discharge mechanism 9 is provided at the bottom of the silo 1, and the grain discharge mechanism 9 is located below the bottom of the silo 1, so that the grain discharge mechanism 9 can receive the grain discharged from the silo 1 and convey the grain. One end of the grain discharge mechanism 9 is connected to the return port of the lifting mechanism 2, and the other end of the grain discharge mechanism 9 is set as the discharge end. The grain discharge mechanism 9 includes a discharge hopper 91, a first sub-conveyor belt 92 and a second sub-conveyor belt 93. The first sub-conveyor belt 92 is arranged below the discharge hopper 91, and the second sub-conveyor belt 93 is arranged obliquely, and the first sub-conveyor belt 92 and the second sub-conveyor belt 93 are connected. The second sub-conveyor belt 93 is connected to the return port of the lifting mechanism 2, so that the grain on the first sub-conveyor belt 92 and the second sub-conveyor belt 93 can be gathered at the return port of the lifting mechanism 2.

[0045] Furthermore, the return port of the lifting mechanism 2 is provided with a baffle cover. When the first sub-conveyor belt 92 and the second sub-conveyor belt 93 convey grain to the return port of the lifting mechanism 2, the baffle cover is in an open state, so that the grain on the first sub-conveyor belt 92 and the second sub-conveyor belt 93 can be conveyed to the return port of the lifting mechanism 2, and the grain is conveyed to the top of the warehouse body 1 through the lifting mechanism 2.

[0046] Furthermore, when the humidity of the grain discharged from the silo 1 reaches a preset value, the heat pump type high-humidity grain dryer can adjust the first sub-conveyor belt 92 to reverse, so that the grain dropped from the discharge funnel 91 can be transported to the outside of the mixed flow room dryer through the first sub-conveyor belt 92, that is, the conveying directions of the first sub-conveyor belt 92 and the second sub-conveyor belt 93 are opposite. Since the second sub-conveyor belt 93 is connected to the first sub-conveyor belt 92 in an inclined state, the conveying directions of the first sub-conveyor belt 92 and the second sub-conveyor belt 93 are opposite, so that the grain moves away from the second sub-conveyor belt 93, so that the grain discharge mechanism 9 can transport the grain discharged from the silo 1 to the next processing step.

[0047] Specifically, the working principle of the mixed-flow room dryer is as follows: when grains with high moisture content enter the dryer, the dryer adopts an up-and-down circulation mode to dry the grains. When the moisture content is about to fall below 20 moisture content points, the dryer adopts intermittent drying, with an interval of two to three hours, that is, after one drying operation, the drying operation is continued after an interval of two to three hours. This reduces the risk of grain breakage caused by mechanical transmission during the up-and-down circulation process.

[0048] Furthermore, a heat preservation layer 6 is provided on the outside of the dryer, the purpose of which is to allow the hot and humid air generated by the hot air passing through the grain layer inside the dryer to re-enter the dryer for recycling. The dryer is provided with a dehumidification fan, and when the hot and humid air is generated, the moisture of the hot and humid air is discharged to the outside, and the remaining hot air with heat re-enters the dryer for recycling. This can reduce the energy consumption of grain drying in the dryer. The dryer adopts low-temperature drying throughout the process, which ensures the quality of the grain after drying while ensuring low energy consumption. Because its control principle is provided with intermittent static low-temperature drying with high and low moisture, it can not only be used for high-quality grain drying, but also for seed drying.

[0049] The embodiment of the utility model provides a mixed flow room dryer, which forms a hot air circulation system in the warehouse body 1 of the dryer to recover and circulate the hot air to form a mixed flow drying system. Through low-temperature drying and intermittent circulation, the drying quality of grain is improved without affecting the drying precipitation rate of the grain.

[0050] In addition, the mixed flow room type dryer provided by the embodiment of the utility model is introduced in detail above. The principle and implementation mode of the utility model are explained by using specific examples in this article. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for the general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A mixed flow room type drying machine, characterized in that: The mixed-flow chamber dryer comprises: a bin, a lifting mechanism arranged on one side of the bin, and a heat source mechanism arranged outside the bin, wherein the lifting mechanism is used to transport grain from the bottom of the bin to the top of the bin; The silo body comprises: a relief layer at the upper end, a drying layer arranged below the relief layer, and a material unloading area at the bottom of the silo body, the drying layer is provided with a heat ventilation channel and a grain transfer mechanism, and the heat ventilation channel is connected to the heat source mechanism; A heat preservation layer is arranged in the warehouse body, and the hot ventilation channel, the drying layer and the heat preservation layer form a hot air circulation channel.

2. The mixed flow room type drying machine according to claim 1, characterized in that: The heat ventilation channel is arranged in the middle of the warehouse body, and the grain allocation mechanism is located on both sides of the heat ventilation channel.

3. The mixed flow room type drying machine according to claim 1, characterized in that: A plurality of blowers are arranged inside the bottom end of the hot ventilation channel, and the air outlets of the blowers face the interior of the warehouse.

4. The mixed flow room type drying machine according to claim 1, characterized in that: The lifting mechanism includes: a chain transmission mechanism, a material discharge pipe and a lifting motor. The lifting motor is driven and connected to the chain transmission mechanism. A grain carrying plate is arranged on the chain transmission mechanism, and the grain is lifted and transported based on the grain carrying plate.

5. The mixed flow room type drying machine according to claim 4, characterized in that: A spiral stirring mechanism is arranged at the feed inlet position on the top of the silo body, and the bottom pipe opening of the discharge pipe is connected to the spiral stirring mechanism. The spiral stirring mechanism includes a material distribution platform and an electric screw arranged above the material distribution platform. A rotary drive motor is connected to one end of the electric screw, and the rotary drive motor is used to drive the electric screw to rotate.

6. The mixed flow room type drying machine according to claim 5, characterized in that: The electric screw is provided with spiral blades, and the electric screw is used to realize axial conveyance of grains.

7. The mixed flow room type drying machine according to claim 1, characterized in that: An outer shell is arranged outside the warehouse body, and the outer shell covers the outer surface of the warehouse body. A preset distance is formed between the outer shell and the outer surface of the warehouse body, and the heat insulation layer is formed based on the preset distance.

8. The mixed flow room type drying machine according to claim 1, characterized in that: The drying layer inside the bin body is provided with a plurality of angular boxes, the plurality of angular boxes cover the drying layer area, and the angular boxes are connected to the heat ventilation channel.

9. The mixed flow room type drying machine according to claim 8, characterized in that: The angular box is a triangular prism structure, and one side edge of the triangular prism structure faces the top of the bin body.

10. The mixed flow room type drying machine according to claim 1, characterized in that: The grain distribution mechanism comprises a plurality of grain distribution wheels and a plurality of grain distribution triangular seats, and a grain distribution wheel is arranged on both sides of the bottom of any grain distribution triangular seat.

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