Grain drying equipment

Abstract

The present application discloses a grain drying device, including a support frame, a drying box, a conveying device, a lifting device, a spiral conveying device, a heating component and a control system, wherein the drying box is arranged on the support frame, a vent is arranged at the top of the drying box, the conveying device is arranged on the support frame, and the output end of the conveying device extends into the drying box; the lifting device is vertically arranged in the drying box, and the bottom of the lifting device is connected with the output end of the conveying device; the spiral conveying device is arranged spirally around the lifting device, and the top of the spiral conveying device is connected with the top of the lifting device, and the bottom of the spiral conveying device is connected with the output end of the conveying device, wherein a downwardly inclined discharge pipe is arranged on the drying box and below the top of the spiral conveying device. Thus, the grain to be dried can be quickly and fully contacted with the heated air in a short time, effectively shortening the drying time, improving the drying efficiency, and thus effectively saving energy consumption and cost.

Description

Technical Field

[0001] The present application relates to the technical field of grain processing, and in particular to a grain drying device. Background Art

[0002] At present, the method to reduce the moisture content of grain is natural drying. In the main grain-producing areas, due to the large output and insufficient drying space, the moisture content of grain purchased by grain depots often exceeds the safe moisture content, which can easily cause the grain in the grain depot to mold, especially when it is cloudy during the grain purchase period. In addition, even if the moisture content of the grain does not exceed the safe moisture content when it is stored, the stored grain needs to be dried regularly due to natural moisture to ensure that the grain does not mold. Due to the limitation of the drying space in the grain depot, the stored grain often cannot be dried on time, which causes the grain in the grain depot to mold.

[0003] In the related art, a horizontal drying drum is usually used to dry grains, that is, a motor is used to drive the horizontal drying drum to rotate, so that the grains in the drying drum are turned over to dry the grains. However, in this drying method, the grains are usually turned over in a piled-up manner, resulting in poor ventilation inside the piled grains. During drying, the grains cannot be fully contacted with the heated air in a short time, the drying time is long, the drying efficiency is low, and it is not conducive to saving energy consumption and costs. Summary of the invention

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, one purpose of the present application is to provide a grain drying equipment that can quickly and fully contact the grain to be dried with heated air in a short time, effectively shortening the drying time, improving the drying efficiency, and thus effectively saving energy consumption and costs.

[0006] To achieve the above-mentioned objectives, a first embodiment of the present application proposes a grain drying equipment, including a support frame, a drying box, a conveying device, a lifting device, a spiral conveying device, a heating component and a control system, wherein the drying box is arranged on the support frame, and a vent is provided at the top of the drying box, the conveying device is mounted on the support frame, and the output end of the conveying device extends into the drying box; the lifting device is vertically arranged in the drying box, and the bottom of the lifting device is connected to the output end of the conveying device, wherein the conveying device is used to convey the grain to be dried into the lifting device; the spiral conveying device is arranged spirally around the lifting device, and the top of the spiral conveying device is connected to the top of the lifting device, and the bottom of the spiral conveying device is connected to the output end of the conveying device, wherein a downwardly inclined discharge pipe is provided on the drying box and below the top of the spiral conveying device, the top of the discharge pipe is connected to the lifting device, and the bottom of the discharge pipe passes through the drying box and extends to outside; wherein, the lifting device is used to perform primary drying on the grain to be dried and lift the grain to be dried into the spiral conveying device; the spiral conveying device is used to perform secondary drying on the grain to be dried and convey the grain to be dried to the output end of the conveying device; the heating component is arranged on the support frame, and the heating component is respectively connected to the lifting device and the spiral conveying device, wherein the heating component is used to heat the lifting device and the spiral conveying device respectively; the control system includes a humidity sensor, an electric gate and a controller, wherein the humidity sensor is arranged at the bottom end of the spiral conveying device, and is used to detect the humidity of the grain to be dried to obtain a humidity value; the electric gate is arranged on the discharge pipe, and is used to control the opening and closing of the discharge pipe; the controller is arranged on the support frame, and the controller is respectively connected to the humidity sensor and the electric gate, wherein the controller is used to control the opening and closing of the electric gate according to the humidity value.

[0007] The grain drying equipment of the embodiment of the present application can quickly and fully contact the grain to be dried with the heated air in a short time, effectively shortening the drying time, improving the drying efficiency, and thus effectively saving energy consumption and costs. In addition, impurities in the grain to be dried can be removed during the drying process, thereby improving the drying quality of the grain.

[0008] In addition, the grain drying equipment proposed in the present application may also have the following additional technical features:

[0009] In one embodiment of the present application, the controller is specifically used to: compare the humidity value with a preset humidity value; if the humidity value is less than or equal to the preset humidity value, control the electric door to open; if the humidity value is greater than the preset humidity value, control the electric door to close.

[0010] In one embodiment of the present application, the conveying device includes a first cylinder, a feed hopper, a first spiral blade and a first driving mechanism, wherein the first cylinder is horizontally mounted on the support frame, and the output end of the first cylinder extends into the drying box and is connected to the bottom of the lifting device; the feed hopper is arranged on the input end of the first cylinder, and the feed hopper is connected to the first cylinder; the first spiral blade is rotatably arranged in the first cylinder, for conveying the grain to be dried into the lifting device; one end of the first driving mechanism is connected to the input end of the first cylinder, and the other end of the first driving mechanism is connected to one end of the rotating shaft of the first spiral blade, wherein the first driving mechanism is used to drive the first spiral blade to rotate.

[0011] In one embodiment of the present application, the lifting device includes a second cylinder, a second spiral blade, a second driving mechanism and a spiral pipe, wherein the second cylinder is vertically arranged in the drying box, the bottom end of the second cylinder is connected to the output end of the first cylinder, the top end of the second cylinder is provided with a discharge port, the second cylinder is connected to the top of the spiral conveyor through the discharge port, and a cavity is provided in the cylinder wall of the second cylinder, the top end of the second cylinder is provided with an air vent, and the second cylinder is located below the discharge port and is connected to the discharge pipe; the second spiral blade is rotatably arranged in the second cylinder, and is used to lift the to-be-dried grain into the spiral conveyor through the discharge port; one end of the second driving mechanism is connected to the support frame, and the other end of the second driving mechanism is connected to one end of the rotating shaft of the second spiral blade, wherein the second driving mechanism is used to drive the second spiral blade to rotate; the spiral pipe is arranged in the cavity, and a plurality of through holes connected to the inner cavity of the second cylinder are provided on the spiral pipe, and one end of the spiral pipe passes through the second cylinder and the drying box in sequence and is connected to the heating component.

[0012] In one embodiment of the present application, a return port is provided on the side wall near the output end of the first cylinder, and the spiral conveying device includes a spiral conveying disk and a spiral enclosure, wherein the spiral conveying disk is arranged around the second cylinder, and the top of the spiral conveying disk is arranged near the bottom of the discharge port, the bottom end of the spiral conveying disk extends to the return port, and the bottom end of the spiral conveying disk is detachably connected to the humidity sensor, a spiral channel is provided in the spiral conveying disk, and the top of the spiral channel is connected to the heating assembly through a pipe, and the spiral array on the spiral conveying disk near its top has a plurality of openings connected to the spiral channels, and a partition net is provided on the opening; the spiral enclosure is arranged around the outer wall of the spiral conveying disk.

[0013] In one embodiment of the present application, the heating assembly includes a heating box, an electric heating wire and an air supply mechanism, wherein the heating box is arranged on the support frame, and the top of the heating box is connected to the spiral pipe and the spiral channel through pipes respectively; the electric heating wire is arranged in the heating box, and the electric heating wire is connected to the controller, wherein the controller is used to control the electric heating wire to cut off power if the humidity value is less than or equal to a preset humidity value; the air supply mechanism is arranged on the support frame, and the air outlet of the air supply mechanism is connected to the bottom of the heating box through a pipe, wherein the air supply mechanism is used to blow hot air into the spiral pipe and the spiral channel respectively through the heating box.

[0014] In one embodiment of the present application, the above-mentioned grain drying equipment also includes a dust hood and a dust removal device, wherein the dust hood is detachably covered on the top of the drying box, and the dust hood covers the vents and the air holes; the dust removal device is arranged on one side of the support frame, and the dust removal device is connected to the dust hood through a pipe, wherein the dust removal device is used to extract impurities in the grain to be dried through the dust hood.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 This is a structural schematic diagram of a grain drying device according to an embodiment of the present application;

[0018] Figure 2 is a structural schematic diagram of a grain drying device according to another embodiment of the present application;

[0019] Figure 3 is a structural schematic diagram of a grain drying device according to another embodiment of the present application;

[0020] Figure 4 This is a partial structural schematic diagram of a grain drying device according to an embodiment of the present application;

[0021] Figure 5 It is a partial structural schematic diagram of a grain drying device according to another embodiment of the present application;

[0022] Figure 6 It is a partial cross-sectional structural schematic diagram of a grain drying device according to an embodiment of the present application;

[0023] Figure 7 It is a schematic cross-sectional structure diagram of a grain drying device according to an embodiment of the present application;

[0024] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part A.

[0025] As shown in the figure: 10, support frame; 20, drying box; 201, ventilation port; 202, discharge pipe; 30, conveying device; 31, first cylinder; 32, feeding hopper; 33, first spiral blade; 34, first driving mechanism; 301, return port; 40, lifting device; 41, second cylinder; 42, second spiral blade; 43, second driving mechanism; 44, spiral pipe; 401, discharge port; 402, cavity; 403, air vent; 404, through hole; 50, spiral conveying device; 51, spiral conveying plate; 52, spiral enclosure; 501, spiral channel; 502, opening; 503, partition; 60, heating component; 61, heating box; 62, electric heating wire; 63, air supply mechanism; 70, control system; 71, humidity sensor; 72, electric gate; 73, controller; 80, dust cover; 90, dust removal device. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0027] The grain drying equipment according to the embodiment of the present application is described below with reference to the accompanying drawings.

[0028] The grain drying equipment provided in the embodiment of the present application can be used for drying cereal grains, mainly for drying grains such as wheat, corn, soybeans, and rice.

[0029] like Figure 1-Figure 8 As shown, the grain drying equipment of the embodiment of the present application may include a support frame 10, a drying box 20, a conveying device 30, a lifting device 40, a spiral conveying device 50, a heating component 60 and a control system 70.

[0030] The drying box 20 is disposed on the support frame 10 , a vent 201 is disposed at the top of the drying box 20 , the conveying device 30 is mounted on the support frame 10 , and an output end of the conveying device 30 extends into the drying box 20 .

[0031] The lifting device 40 is vertically arranged in the drying box 20, and the bottom of the lifting device 40 is connected to the output end of the conveying device 30, wherein the conveying device 30 is used to convey the grain to be dried into the lifting device 40. It should be noted that the grain described in this embodiment can be wheat, corn, soybean, rice and other grains.

[0032] The spiral conveyor 50 is arranged spirally around the lifting device 40, and the top of the spiral conveyor 50 is connected to the top of the lifting device 40, and the bottom of the spiral conveyor 50 is connected to the output end of the conveying device 30, wherein a downwardly inclined discharge pipe 202 is provided on the drying box 20 and below the top of the spiral conveyor 50, the top end of the discharge pipe 202 is connected to the lifting device 40, and the bottom end of the discharge pipe 202 passes through the drying box 20 and extends to the outside (i.e., the outside of the drying box 20).

[0033] The lifting device 40 is used to perform primary drying on the grains to be dried and lift the grains to be dried into the spiral conveying device 50. It should be noted that the primary drying described in this embodiment refers to preliminary drying of the grains to be dried.

[0034] The spiral conveying device 50 is used to perform secondary drying on the grain to be dried and convey the grain to be dried to the output end of the conveying device 30. It should be noted that the secondary drying described in this embodiment refers to secondary drying of the grain to be dried.

[0035] The heating component 60 is disposed on the support frame 10 , and the heating component 60 is connected to the lifting device 40 and the spiral conveying device 50 , respectively, wherein the heating component 60 is used to heat the lifting device 40 and the spiral conveying device 50 , respectively.

[0036] The control system 70 may include a humidity sensor 71 , an electric gate 72 , and a controller 73 .

[0037] The humidity sensor 71 is disposed at the bottom end of the spiral conveyor 50 and is used to detect the humidity of the grain to be dried to obtain a humidity value.

[0038] The electric gate 72 is disposed on the discharge pipe 202 to control the opening and closing of the discharge pipe 202 .

[0039] The controller 73 is disposed on the support frame 10 , and the controller 73 is connected to the humidity sensor 71 and the electric gate 72 respectively, wherein the controller 73 is used to control the opening and closing of the electric gate 72 according to the humidity value.

[0040] Further, in one embodiment of the present application, the controller 73 is specifically configured to:

[0041] The humidity value is compared with the preset humidity value, wherein the preset humidity value is the marked humidity value (i.e., the humidity value that meets the drying requirements, and the specific preset humidity value can be set according to actual conditions and is not limited here).

[0042] If the humidity value is less than or equal to the preset humidity value, the electric gate 72 is controlled to open.

[0043] If the humidity value is greater than the preset humidity value, the electric gate 72 is controlled to close. It should be noted that the initial position of the electric gate 72 is in a closed state.

[0044] Specifically, when it is necessary to dry the grain to be dried, the relevant staff first needs to set the grain drying equipment at the location of the grain to be dried (the location may be in a factory building for processing grain or in a warehouse for storing grain). Then, the staff can control the belt conveyor to transport the grain to be dried to the input end of the conveying device 30, and control the conveying device 30 to transport the grain to be dried to the lifting device 40.

[0045] At the same time, the staff controls the heating component 60 to heat the lifting device 40 and the spiral conveyor 50 respectively, and controls the lifting device 40 to lift the grain to be dried into the spiral conveyor 50. At the same time, the lifting device 40 performs primary drying on the grain to be dried during the lifting process. The grain to be dried that enters the spiral conveyor 50 moves downward (or rolls) in a dispersed spiral under its own gravity, so that the grain to be dried is fully in contact with the spiral conveyor 50, and the heated spiral conveyor 50 is then fully and evenly dried for a second time. In this way, the grain to be dried can be quickly and fully contacted with the heated air in a short time, effectively shortening the drying time, improving the drying efficiency, and thus effectively saving energy consumption and costs.

[0046] Then, the grains to be dried after the second drying enter the output end of the conveying device 30 under the action of their own gravity, and are transported to the lifting device 40 again by the conveying device. At the same time, the humidity sensor 71 detects the humidity of the grains to be dried after the second drying, and obtains the humidity value. Then, the controller 73 compares the humidity value with the preset humidity value. If the humidity value is less than or equal to the preset humidity value, the controller 73 controls the electric gate 72 to open, and the staff controls the heating component 60 to stop working. At this time, the lifting device 40 is connected to the discharge pipe 202, and the lifting device 40 discharges the dried grains and cools them for storage.

[0047] If the humidity value is greater than the preset humidity value, the electric gate 72 is controlled to close (it should be noted that when the dried grain is completely discharged, the controller 73 controls the electric gate 72 to close). At this time, the grain to be dried continues to be lifted by the lifting device 40 to the spiral conveyor 50 for further drying, and this cycle is repeated until the grain to be dried is dried to a humidity value less than or equal to the preset humidity value. This can effectively save energy consumption and cost, and ensure the drying quality of the grain.

[0048] In one embodiment of the present application, Figure 2 As shown, the conveying device 30 may include a first cylinder 31 , a feed hopper 32 , a first spiral blade 33 and a first driving mechanism 34 .

[0049] The first cylinder 31 is horizontally mounted on the support frame 10 , and the output end of the first cylinder 31 extends into the drying box 20 and is connected to the bottom of the lifting device 40 .

[0050] The feed hopper 32 is disposed on the input end of the first cylinder 31 , and the feed hopper 32 is communicated with the first cylinder 31 .

[0051] The first spiral blade 33 is rotatably disposed in the first cylinder 31, and is used to transport the grain to be dried into the lifting device 40. It should be noted that the outer wall of the first spiral blade 33 described in this embodiment is in contact with the inner wall of the first cylinder 31.

[0052] One end of the first driving mechanism 34 is connected to the input end of the first cylinder 31 , and the other end of the first driving mechanism 34 is connected to one end of the rotating shaft of the first spiral blade 33 , wherein the first driving mechanism 34 is used to drive the first spiral blade 33 to rotate.

[0053] It should be noted that the first driving mechanism 34 described in this embodiment can be a servo motor, the body of which can be connected to the input end of the first cylinder 31 through a threaded fastener (screw, bolt or bolt), and the output shaft of the servo motor passes through the input end wall of the first cylinder and is connected to the rotating shaft end of the first spiral blade 33.

[0054] It is understandable that the staff can drive the first spiral blade 33 to rotate by controlling the first driving mechanism 34 , and the rotating first spiral blade 33 transports the grain to be dried in the feed hopper 32 to the lifting device 40 .

[0055] In one embodiment of the present application, Figure 3-Figure 8 As shown, the lifting device 40 may include a second cylinder 41 , a second spiral blade 42 , a second driving mechanism 43 and a spiral pipe 44 .

[0056] Among them, the second cylinder 41 is vertically arranged in the drying box 20, the bottom end of the second cylinder 41 is connected with the output end of the first cylinder 31, the top of the second cylinder 41 is provided with a discharge port 401, the second cylinder 41 is connected with the top of the spiral conveying device 50 through the discharge port 401, and a cavity 402 is provided in the cylinder wall of the second cylinder 41, and an air hole 403 is provided at the top of the second cylinder 41, wherein the air hole 403 is used to dissipate the hot air (steam) generated by heating the grain to be dried, and the second cylinder 41 is located below the discharge port 401 and is connected with the discharge pipe 202.

[0057] The second spiral blade 42 is rotatably disposed in the second cylinder 41 , and is used to lift the grain to be dried into the spiral conveying device 50 through the discharge port 401 .

[0058] One end of the second driving mechanism 43 is connected to the support frame 10 , and the other end of the second driving mechanism 43 is connected to one end of the rotating shaft of the second spiral blade 42 , wherein the second driving mechanism 43 is used to drive the second spiral blade 42 to rotate.

[0059] It should be noted that the second driving mechanism 43 described in this embodiment can be a motor, the body of which can be connected to the support frame 10 via threaded fasteners (screws, bolts or bolts), and the output shaft of the motor passes through the support frame 10 and is connected to the end of the rotating shaft of the second spiral blade 42.

[0060] The spiral pipe 44 is arranged in the cavity 402, and a plurality of through holes 404 are provided on the spiral pipe 44 to communicate with the inner cavity of the second cylinder 41. For example, the plurality of through holes 404 may be 6, 7, 8, 9, 10 through holes 404, etc. The specific number of through holes 404 may be selected according to the actual situation and is not limited here. One end of the spiral pipe 44 passes through the second cylinder 41 and the drying box 20 in sequence and is connected to the heating assembly 60. It should be noted that the aperture of the through hole 404 described in this embodiment is smaller than the minimum size of the grain to be dried.

[0061] It can be understood that when the grain to be dried enters the bottom of the second cylinder 41, the staff can drive the second spiral blade 32 to rotate by controlling the second driving mechanism 43. The rotating second spiral blade 32 will lift the grain to be dried at the bottom upward and lift it into the spiral conveying device 50. At the same time, the heating component 60 heats the second cylinder 41 through the spiral pipe 44, and performs primary drying on the grain to be dried during the lifting process.

[0062] In one embodiment of the present application, Figure 4-Figure 8 As shown, a return port 301 is provided on the side wall near the output end of the first cylinder 31 , and the spiral conveying device 50 may include a spiral conveying disc 51 and a spiral enclosure 52 .

[0063] The spiral conveyor disc 51 is arranged around the second cylinder 41, the top entrance of the spiral conveyor disc 51 is arranged near the bottom of the discharge port 401, the bottom exit of the spiral conveyor disc 51 extends to the return port 301, and the bottom end of the spiral conveyor disc 51 is detachably connected to the humidity sensor 71, a spiral channel 501 is arranged in the spiral conveyor disc 51, the top end of the spiral channel 501 is connected to the heating assembly 60 through a pipeline, and there are multiple openings 502 connected to the spiral channel 501 near the top spiral array of the spiral conveyor disc 51, for example, the multiple openings 502 can be 2, 3, 4, 5 openings 502, etc., and the specific number of openings 502 can be selected according to actual conditions, which is not limited here, and a partition net 503 is arranged on the opening 502. It can be understood that the spiral conveyor disc 51 described in this embodiment is detachably connected to the humidity sensor 71, which is convenient for the installation and replacement of the humidity sensor 71. For example, the humidity sensor 71 can be connected to the spiral conveyor disc 51 by embedding or threaded fasteners.

[0064] It should be noted that the mesh holes of the partition net 503 described in this embodiment are distributed obliquely downward, and the aperture of the mesh holes is smaller than the minimum size of the grain to be dried.

[0065] The spiral enclosure 52 is arranged around the outer wall of the spiral conveyor plate 51, and the outer edge of the spiral enclosure 52 can be in contact with the inner wall of the drying box 20 or leave a gap. The specific arrangement can be selected according to actual conditions.

[0066] Further, in one embodiment of the present application, Figure 6 As shown, the heating assembly 60 may include a heating box 61 , an electric heating wire 62 and an air supply mechanism 63 .

[0067] The heating box 61 is disposed on the support frame 10 , and the top end of the heating box 61 is connected to the spiral pipe 44 and the spiral channel 501 through pipes respectively.

[0068] The electric heating wire 62 is installed in the heating box 61, and the electric heating wire 62 is connected to the controller 73, wherein the controller 73 is used to control the electric heating wire 62 to be powered off if the humidity value is less than or equal to the preset humidity value. It can be understood that the electric heating wire 62 described in this embodiment is used to heat the air inside the heating box 61 and form hot air.

[0069] The air supply mechanism 63 is arranged on the support frame 10, and the air outlet of the air supply mechanism 63 is connected to the bottom of the heating box 61 through a pipe, wherein the air supply mechanism 63 is used to blow hot air into the spiral pipe 44 and the spiral channel 501 respectively through the heating box 61.

[0070] It should be noted that the air supply mechanism 63 described in this embodiment may be a fan, the body of which may be connected to the support frame 10 via threaded fasteners, and the air outlet of the fan is connected to the bottom of the heating box 61 via a pipe.

[0071] Specifically, when the grain to be dried enters the bottom of the second cylinder 41, the staff can drive the second spiral blade 32 to rotate by controlling the second driving mechanism 43, and the rotating second spiral blade 32 will lift the grain to be dried at the bottom upward and bring it to the top entrance of the spiral conveyor plate 51. At the same time, the air supply mechanism 63 blows the hot air in the heating box 61 into the spiral pipe 44, and heats the second cylinder 41 through the spiral pipe 44 to dry the grain to be dried in the second cylinder 41. At the same time, the hot air entering the spiral pipe 44 enters the second cylinder 41 through multiple through holes 404, and directly dries the grain to be dried during the lifting process. In this way, the grain to be dried can be quickly and fully contacted with the heated air in a short time, effectively shortening the drying time and improving the drying efficiency.

[0072] When the grain to be dried that has passed the first-stage drying enters the top of the spiral conveyor plate 51, the grain to be dried that has passed the first-stage drying moves downward in a dispersed manner along the spiral conveyor plate 51 under the action of its own gravity, avoiding the accumulation of the grain to be dried that moves downward, so that the grain to be dried is in full contact with the upper surface of the spiral conveyor plate 51 to be heated and dried. At the same time, the air supply mechanism 63 blows hot air into the spiral channel 501 in the spiral conveyor plate 51 through a pipeline, and heats the spiral conveyor plate 51, so that the grain to be dried is fully heated and dried, and the grain to be dried can be quickly and fully contacted with the heated air in a short time, which effectively shortens the drying time and improves the drying efficiency, thereby effectively saving energy consumption and cost.

[0073] At the same time, the hot air entering the spiral channel 501 is blown out through the mesh holes on the partition net 503, and the hot air is blown to the grains to be dried that are moving downward and passing through the partition net 503, and the grains to be dried are directly air-dried. In addition, since the mesh holes of the partition net 503 are arranged obliquely downward, the hot air blown out through the mesh holes of the partition net 503 can push the grains to be dried that are moving downward to move (roll) rapidly along the spiral conveyor plate 51, and gradually enter the first cylinder 31 through the return port 301.

[0074] Subsequently, the first driving mechanism 34 drives the first spiral blade 33 to rotate, and the rotating first spiral blade 33 conveys the secondary dried grain to be dried into the second cylinder 41. At the same time, the second driving mechanism 43 drives the second spiral blade 32 to rotate, and the rotating second spiral blade 32 lifts the grain to be dried at the bottom upward and lifts it into the spiral conveyor plate 51. This cycle is repeated to fully and evenly dry the grain to be dried, thereby improving the drying quality.

[0075] When the secondary dried grain to be dried enters the first cylinder 31 through the return port 301, the humidity sensor 71 detects the humidity of the secondary dried grain to be dried and obtains the humidity value. Then, the controller 73 compares the humidity value with the preset humidity value. If the humidity value is less than or equal to the preset humidity value, the controller 73 controls the electric gate 72 to open and controls the electric heating wire 62 to cut off the power. At this time, the dried grain to be dried that enters the second cylinder 41 through the first cylinder 31 is lifted by the rotating second spiral blade 32 and discharged through the discharge pipe 202, thereby effectively saving energy consumption and cost.

[0076] In one embodiment of the present application, Figure 4-Figure 7 As shown, the grain drying equipment further includes a dust hood 80 and a dust removal device 90 .

[0077] The dust cover 80 is detachably mounted on the top of the drying box 20, and covers the vent 201 and the air hole 403. It is understood that the dust cover 80 described in this embodiment is detachably mounted on the top of the drying box 20, which facilitates the installation of the dust cover 80. For example, the dust cover 80 can be connected to the drying box 20 by means of snap connection, riveting, or threaded fastener connection.

[0078] The dust removal device 90 is disposed on one side of the support frame 10, and the dust removal device 90 is connected to the dust removal cover 80 through a pipeline, wherein the dust removal device 90 is used to extract impurities in the grain to be dried through the dust removal cover 80. It should be noted that the impurities described in this embodiment may include dust, husks (grain husks) and unformed grains (i.e., broken grains or grains infested with borers).

[0079] It should be noted that the dust removal device 90 described in this embodiment may be a cyclone dust collector, the inlet end of which is connected to the dust removal hood 80 through a pipeline.

[0080] Specifically, when the grain to be dried is pushed to the spiral conveyor plate 51 through the discharge port by the rotating second spiral blade 42, the staff can control the dust removal device 90 to exhaust air from the inner cavity of the dust removal hood 80, and extract the hot air (steam) generated by heating the grain to be dried through the vents 201 and the air holes 403. At the same time, impurities in the grain to be dried scattered on the spiral conveyor plate 51 can be extracted, thereby improving the drying quality of the grain.

[0081] In summary, the grain drying equipment of the embodiment of the present application can quickly and fully contact the grain to be dried with the heated air in a short time, effectively shortening the drying time, improving the drying efficiency, and thus effectively saving energy consumption and costs.

[0082] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0084] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A grain drying equipment, characterized in that: It includes a support frame, a drying box, a conveying device, a lifting device, a spiral conveying device, a heating component and a control system, wherein: The drying box is arranged on the support frame, a vent is arranged on the top of the drying box, the conveying device is arranged on the support frame, and the output end of the conveying device extends into the drying box; The lifting device is vertically arranged in the drying box, and the bottom of the lifting device is connected to the output end of the conveying device, wherein the conveying device is used to convey the grain to be dried into the lifting device; The spiral conveyor is spirally arranged around the lifting device, and the top of the spiral conveyor is connected to the top of the lifting device, and the bottom of the spiral conveyor is connected to the output end of the conveying device, wherein a downwardly inclined discharge pipe is provided on the drying box and below the top of the spiral conveyor, the top of the discharge pipe is connected to the lifting device, and the bottom of the discharge pipe passes through the drying box and extends to the outside; wherein, The lifting device is used to perform primary drying on the grain to be dried and lift the grain to be dried into the spiral conveying device; The spiral conveying device is used to perform secondary drying on the grain to be dried and convey the grain to be dried to the output end of the conveying device; The heating component is arranged on the supporting frame, and the heating component is respectively connected to the lifting device and the spiral conveying device, wherein the heating component is used to heat the lifting device and the spiral conveying device respectively; The control system includes a humidity sensor, an electric gate and a controller, wherein: The humidity sensor is arranged at the bottom end of the spiral conveyor device, and is used to detect the humidity of the grain to be dried to obtain a humidity value; The electric gate is arranged on the discharge pipe and is used to control the opening and closing of the discharge pipe; The controller is arranged on the support frame, and the controller is connected to the humidity sensor and the electric gate respectively, wherein the controller is used to control the opening and closing of the electric gate according to the humidity value; The conveying device includes a first cylinder, a feed hopper, a first spiral blade and a first driving mechanism, wherein: The first cylinder is horizontally mounted on the support frame, and the output end of the first cylinder extends into the drying box and is connected to the bottom of the lifting device; The feed hopper is arranged on the input end of the first cylinder, and the feed hopper is communicated with the first cylinder; The first spiral blade is rotatably disposed in the first cylinder and is used to transport the grain to be dried into the lifting device; One end of the first driving mechanism is connected to the input end of the first cylinder, and the other end of the first driving mechanism is connected to one end of the rotating shaft of the first spiral blade, wherein the first driving mechanism is used to drive the first spiral blade to rotate; The lifting device comprises a second cylinder, a second spiral blade, a second driving mechanism and a spiral pipeline, wherein: The second cylinder is vertically arranged in the drying box, the bottom end of the second cylinder is connected with the output end of the first cylinder, the top end of the second cylinder is provided with a discharge port, the second cylinder is connected with the top of the spiral conveyor through the discharge port, a cavity is provided in the cylinder wall of the second cylinder, an air hole is provided at the top end of the second cylinder, and the second cylinder is located below the discharge port and connected with the discharge pipe; The second spiral blade is rotatably disposed in the second cylinder, and is used to lift the grain to be dried into the spiral conveying device through the discharge port; One end of the second driving mechanism is connected to the support frame, and the other end of the second driving mechanism is connected to one end of the rotating shaft of the second spiral blade, wherein the second driving mechanism is used to drive the second spiral blade to rotate; The spiral pipe is arranged in the cavity in a surrounding manner, and a plurality of through holes communicating with the inner cavity of the second cylinder are arranged on the spiral pipe. One end of the spiral pipe passes through the second cylinder and the drying box in sequence and is connected to the heating component. A return port is provided on the side wall near the output end of the first cylinder, and the spiral conveying device includes a spiral conveying disk and a spiral enclosure, wherein: The spiral conveyor plate is arranged around the second cylinder, the top of the spiral conveyor plate is arranged below the discharge port, the bottom of the spiral conveyor plate extends to the return port, and the bottom of the spiral conveyor plate is detachably connected to the humidity sensor, a spiral channel is arranged in the spiral conveyor plate, the top of the spiral channel is connected to the heating component through a pipeline, and the spiral conveyor plate has a plurality of openings connected to the spiral channel near the top of the spiral array, and a partition net is arranged on the opening, the mesh holes of the partition net are distributed obliquely downward, and the aperture of the mesh holes is smaller than the minimum size of the grain to be dried; The spiral enclosure is arranged on the outer wall of the spiral conveyor disk in a surrounding manner.

2. The grain drying equipment according to claim 1, characterized in that: The controller is specifically used for: comparing the humidity value with a preset humidity value; If the humidity value is less than or equal to the preset humidity value, the electric gate is controlled to open; If the humidity value is greater than the preset humidity value, the electric gate is controlled to close.

3. The grain drying equipment according to claim 2, characterized in that: The heating assembly includes a heating box, an electric heating wire and an air supply mechanism, wherein: The heating box is arranged on the supporting frame, and the top end of the heating box is connected with the spiral pipe and the spiral channel through pipes respectively; The electric heating wire is mounted in the heating box and is connected to the controller, wherein the controller is used to control the electric heating wire to be powered off if the humidity value is less than or equal to a preset humidity value; The air supply mechanism is arranged on the support frame, and the air outlet of the air supply mechanism is connected with the bottom of the heating box through a pipe, wherein the air supply mechanism is used to blow hot air into the spiral pipe and the spiral channel respectively through the heating box.

4. The grain drying equipment according to claim 1, characterized in that: It also includes a dust removal cover and a dust removal device, wherein: The dust cover is detachably mounted on the top of the drying box, and the dust cover covers the vent and the air hole; The dust removal device is arranged on one side of the support frame, and the dust removal device is connected to the dust removal cover through a pipeline, wherein the dust removal device is used to extract impurities in the grain to be dried through the dust removal cover.

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