Dryer capable of automatically mixing

Abstract

The invention relates to the technical field of grain drying, and discloses an automatic mixing dryer which comprises a drying oven and a base installed at the bottom of the drying oven, a sieve plate is assembled in the drying oven and divides the drying oven into an upper cavity and a lower cavity, namely a tempering layer and a drying chamber, and a material mixing assembly and a conveying assembly are arranged in the tempering layer and the drying chamber respectively. Grain collecting assemblies communicated with the drying chamber are installed on the left side and the right side of the bottom end of the drying oven, a grain conveying assembly capable of moving up and down along the inner side of the lifting frame is arranged on the periphery of the grain collecting assemblies, the bottom end of the lifting frame is installed on the base, and material returning assemblies communicated with the tempering layer are installed on the left side and the right side of the top end of the drying oven. Along with forward and reverse self-rotation of the conveying assembly, the left and right grain conveying assemblies periodically move up and down in opposite motion postures, separated grain collection, separated grain transfer and separated grain unloading are achieved, meanwhile, the conveying assembly drives the mixing assembly to reciprocate left and right in the tempering layer through the transmission assembly, and the grains entering the tempering layer are turned and mixed.

Description

Technical Field

[0001] The present invention relates to the technical field of grain drying, and more particularly to a dryer capable of automatic mixing. Background Art

[0002] A grain dryer is a device specifically used for drying grain. It significantly improves the storage and transportation efficiency of grain by removing moisture from the grain. This equipment plays a vital role in the agricultural field. It not only improves the storage safety and shelf life of grain, but also effectively reduces grain losses caused by weather changes. A grain dryer usually consists of several key parts: a drying chamber, a heating system, a ventilation system, and a control system.

[0003] When processing large quantities of grain, although the dryer has a large capacity, the grain tends to accumulate in the drying oven. This accumulation phenomenon reduces the contact area between the hot air flow and the grain, thereby affecting the drying efficiency and energy utilization. To solve this problem, a circulating mixing device is usually installed in the drying oven to continuously turn the grain to increase the heat exchange area. The circulating mixing device achieves grain turning by taking the grain from the bottom of the dryer and pouring it at the highest point. However, this method has some shortcomings: first, the grain is poured out at the highest point, resulting in insufficient dispersion between grain particles; second, the drying method is relatively simple, mainly relying on the hot air flow in the drying chamber to heat and dry the grain.

[0004] Therefore, the present invention proposes a drying machine capable of automatic mixing to achieve continuous mixing and separate drying of grains in an oven, so as to improve the efficiency of grain drying and energy utilization. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic mixing dryer to solve the problem existing in the above-mentioned background technology of how to achieve continuous mixing and separate drying of grains in an oven to improve grain drying efficiency and energy utilization.

[0006] The present invention provides the following technical solution: an automatic mixing dryer, comprising an oven and a base installed at the bottom thereof, a sieve plate being installed in the oven, and the sieve plate dividing the oven into an upper and lower chamber, a slow-release layer and a drying chamber respectively, and a mixing assembly and a conveying assembly being respectively provided in the slow-release layer and the drying chamber, a grain collecting assembly communicating with the drying chamber being installed on the left and right sides of the bottom end of the oven, and a grain transporting assembly movable up and down along the inner side of a lifting frame being provided on the periphery of the grain collecting assembly, the bottom end of the lifting frame being installed on the base, a material returning assembly communicating with the slow-release layer being installed on the left and right sides of the top end of the oven, and a driving assembly and a transmission assembly for transmitting the conveying assembly and the mixing assembly being respectively installed on the outside of the oven; The conveying assembly includes a first screw rod, a grain pushing rack, a first pulley and a gear, wherein the first screw rod is rotatably arranged in the drying chamber of the oven, and the left and right ends of the first screw rod are movably passed through the oven and are sequentially equipped with the first pulley and the gear from the inside out, the grain pushing rack is threadedly sleeved on the threaded section of the first screw rod, and the bottom end of the grain pushing rack is in contact with the top wall of the heat conducting plate and is slidably connected thereto; The grain collecting assembly includes a grain collecting box, a material guide pipe, a flow limiting valve plate, a positioning seat and a first spring, wherein the grain collecting box is fixedly installed outside the material outlet and communicates with the drying chamber, the bottom wall of the grain collecting box is equipped with a material guide pipe, the top end of the material guide pipe is movably connected to the flow limiting valve plate, the flow limiting valve plate is connected to the positioning seat through the first spring transmission, and the positioning seat is fixedly installed on the outer wall of the grain collecting box; The return material assembly includes a return material pipe, a base plate, a recursive block, a rocker arm and a second spring, wherein the return material pipe is fixedly mounted on the outer wall of the oven and communicates with the slow-release layer, the top end of the return material pipe is fixedly connected to the base plate, the inner cavity of the return material pipe is slidably connected to the recursive block, the steering knuckle at the bottom end of the rocker arm is movably engaged with the recursive block, and the push plate at the top end of the rocker arm is connected to the base plate through the second spring; The cam is fixedly provided with a rack on one side of the lifting frame, and the rack is meshed with the gear, and the rack has a door which is arranged in the grain inlet and the grain outlet. When the cam is in the state of being lifted up, the cam can move relative to the gear of the lifting frame, thereby realizing unloading and recycling of the grain in the grain box.

[0007] Furthermore, a through opening is provided on the flow limiting valve plate, which can move toward the side of the positioning seat and compress the first spring under the push of the sliding rod until the through opening of the flow limiting valve plate is aligned with the material guide pipe. The grain collected in the grain collection box can be introduced into the grain transport box through the unobstructed material guide pipe, thereby realizing the quantitative transfer of grain. After the external force on the flow limiting valve plate is removed, the flow limiting valve plate can elastically reset and seal the material guide pipe to stop discharging grain.

[0008] Furthermore, when one end of the slide rod reaches the lowest turning point of the U-shaped slide groove, the other end of the slide rod is at least pulled out to the outside of the grain collection box to prevent the grain collection box from interfering with the moving trajectory of the grain transport component.

[0009] Furthermore, the elastic shaft is mainly composed of a rod body and a torsion spring. When an external force acts on the rod body to rotate it around the axis, the torsion spring is compressed or stretched, thereby storing elastic potential energy. When the external force disappears, the torsion spring releases this energy, causing the rod body to return to its original position.

[0010] Furthermore, the transmission assembly includes a second screw rod, a U-shaped bracket, a second pulley and a slider, wherein the second screw rod is rotatably connected to the U-shaped bracket, one end of the second screw rod is equipped with a second pulley, wherein the second pulley is connected to a first pulley through a synchronous belt transmission, and the slider is slidably arranged on the outside of the second screw rod and is threadedly sleeved with the second screw rod.

[0011] Furthermore, the mixing assembly includes a U-shaped connecting rod, an elastic telescopic rod, a push plate and a dredging head, wherein the two ends of the U-shaped connecting rod are respectively connected to the slider and the elastic telescopic rod, the telescopic end of the elastic telescopic rod is equipped with a push plate, and the bottom end of the push plate is fixedly connected to the dredging head.

[0012] Furthermore, the drive assembly includes a reversible motor, a base and a third pulley, wherein the reversible motor is assembled above the base through the base, the output shaft of the reversible motor is fixedly connected to the third pulley through a coupling, and the third pulley is connected to the other first pulley through a synchronous belt.

[0013] Furthermore, the grain passing through the grain separation hole falls onto the upper layer of the heat conduction plate, which can conduct the heat of the heater to heat the fallen grain. The bottom wall of the drying chamber is equipped with a heat conduction plate that carries the conveying assembly. The top wall of the oven is the feed port, and the bottom end of the oven is provided with discharge ports located on the left and right sides of the heat conduction plate.

[0014] Furthermore, grain separation holes are provided on the surface of the sieve plate, and the grain in the slow-release layer passes through the grain separation holes and enters the drying chamber in the form of continuous portions and exchanges heat with it. The grain separation holes are inverted cones, and the grain separation holes fit together with the dredging heads, so that they can smoothly enter or exit the grain separation holes.

[0015] Technical effects and advantages of the present invention: The present invention is provided with a conveying component, a grain transport component and a mixing component, which is conducive to the positive and negative periodic rotation of the first screw, the first pulley and the gear, so that the grain pushing rack slidingly arranged above the heat conduction plate moves back and forth in the drying chamber, and the grain falling on the upper layer of the heat conduction plate is pushed into the grain collecting box for collection through the discharge port of the drying oven. At the same time, the gears connected to the two ends of the first screw drive the left and right racks to move in reverse. When the grain transport box slides down to the lowest point along the lifting frame, the grain collected in the grain collecting box can be introduced into the grain transport box through the unobstructed guide pipe, so as to realize the quantitative transfer of the grain. When the grain transport box slides up to the highest point along the lifting frame, the grain loaded in the grain transport box can be The grain can be collected and transported to the slow-moving layer in the oven through the connected grain discharge port and return pipe, so as to realize the unloading and recovery of the grain in the grain transport box. With the forward and reverse rotation of the conveying component, the left and right grain transport components move up and down periodically with opposite motion postures, so as to realize the collection, transportation and unloading of grain. At the same time, the slider slidingly arranged on the outer periphery of the U-shaped bracket can carry the mixing component to move back and forth in the slow-moving layer with the forward and reverse alternating rotation of the second screw rod. On the one hand, the moving push plate can turn over and mix the grain entering the slow-moving layer. On the other hand, the moving dredging head can telescopically poke through the grain separation hole to avoid the blockage of the screen plate and the loss of grain separation ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention from one side perspective.

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention from another side perspective.

[0018] Figure 3 For the present invention Figure 1 Schematic diagram of the structure and its local cross-section.

[0019] Figure 4 For the present invention Figure 3 Schematic diagram of the interior of the oven and the connection structure on one side.

[0020] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle.

[0021] Figure 6 For the present invention Figure 4 Schematic diagram of the structure at point B.

[0022] Figure 7 For the present invention Figure 3 Schematic diagram of the interior of the oven and the connection structure on the other side.

[0023] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point C in the middle.

[0024] Figure 9For the present invention Figure 7 Schematic diagram of the structure at point D in the middle.

[0025] Figure 10 It is a schematic diagram of the connection structure of the oven, conveying assembly, transmission assembly and mixing assembly of the present invention.

[0026] The accompanying drawings are marked as follows: 1. oven; 2. base; 3. sieve plate; 4. conveying assembly; 401. first screw rod; 402. grain pushing rack; 403. first pulley; 404. gear; 5. grain collecting assembly; 501. grain collecting box; 502. material guide pipe; 503. flow limiting valve plate; 504. positioning seat; 505. first spring; 6. grain transport assembly; 601. grain transport box; 602. slide rod; 603. rack; 604. hatch; 605. elastic shaft; 7. lifting frame; 8. material return assembly; 8 01. Return pipe; 802. Base plate; 803. Recursive block; 804. Rocker arm; 805. Second spring; 9. Transmission assembly; 901. Second screw rod; 902. U-shaped bracket; 903. Second pulley; 904. Slider; 10. Mixing assembly; 1001. U-shaped connecting rod; 1002. Elastic telescopic rod; 1003. Pushing plate; 1004. Unclogging head; 11. Driving assembly; 1101. Reversible motor; 1102. Machine base; 1103. Third pulley; 12. Heat transfer plate. DETAILED DESCRIPTION

[0027] The technical solutions of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The automatic mixing dryer involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work fall within the scope of protection of the present invention.

[0028] Reference Figure 1-10The present invention provides an automatic mixing dryer, comprising an oven 1 and a base 2 mounted at the bottom thereof, a sieve plate 3 being installed in the oven 1, and the sieve plate 3 dividing the oven 1 into two upper and lower chambers, a buffer layer and a drying chamber respectively, and a mixing component 10 and a conveying component 4 being respectively provided in the buffer layer and the drying chamber, a grain collecting component 5 communicating with the drying chamber being installed on the left and right sides of the bottom end of the oven 1, and a grain transporting component 6 which can move up and down along the inner side of a lifting frame 7 being provided on the periphery of the grain collecting component 5, the bottom end of the lifting frame 7 being mounted on the base 2, and a material conveying component 6 communicating with the buffer layer being installed on the left and right sides of the top end of the oven 1 The return material component 8 is provided, and the outside of the oven 1 is also respectively equipped with a driving component 11 and a transmission component 9 for driving the conveying component 4 and the mixing component 10. As the conveying component 4 spins forward and backward, the left and right grain transport components 6 move up and down periodically in opposite motion postures to realize grain collection, grain transportation and grain unloading. At the same time, the conveying component 4 drives the mixing component 10 to move back and forth in the slow-su layer through the transmission component 9, turning and mixing the grain entering the slow-su layer, realizing continuous mixing and grain drying in the oven 1, so as to improve grain drying efficiency and energy utilization.

[0029] In this embodiment, it should be specifically explained that the surface of the sieve plate 3 is provided with grain separation holes. The grain in the slow-heat layer passes through the grain separation holes and enters the drying chamber in the form of continuous portions and exchanges heat with the drying chamber, which is the main grain drying step. The grain separation holes are inverted cones, and the grain separation holes fit with the dredging head 1004, so that it can smoothly enter or exit the grain separation holes, which is convenient for timely detachment after the grain separation holes are dredged, thereby ensuring the normal grain separation capacity of the sieve plate 3. The grain passing through the grain separation hole falls on the upper layer of the heat conducting plate 12. The heat conducting plate 12 can conduct the heat of the heater to heat the fallen grain. The bottom wall of the drying chamber is equipped with a heat conducting plate 12 carrying the conveying component 4. The top wall of the oven 1 is the feeding port, which can be connected to the grain unloading device, and the bottom end of the oven 1 is provided with a discharge port located on the left and right sides of the heat conducting plate 12.

[0030] Reference Figure 3-9The conveying assembly 4 includes a first screw rod 401, a grain pushing rack 402, a first pulley 403 and a gear 404, wherein the first screw rod 401 is rotatably arranged in the drying chamber of the oven 1, and the left and right ends of the first screw rod 401 are movable through the oven 1 and are sequentially equipped with the first pulley 403 and the gear 404 from the inside to the outside, the grain pushing rack 402 is threadedly sleeved on the threaded section of the first screw rod 401, and the bottom end of the grain pushing rack 402 is in contact with the top wall of the heat conducting plate 12 and is slidably connected thereto. When the first screw rod 401 rotates alternately forward and backward, the grain pushing rack 402 slidingly arranged above the heat conducting plate 12 can move back and forth in the drying chamber, pushing the grain falling on the upper layer of the heat conducting plate 12 into the grain collecting box 501 for collection through the discharge port of the drying oven 1. At the same time, the gears 404 connected to the two ends of the first screw rod 401 can drive the left and right racks 603 to move in opposite directions, causing the left and right grain transport assemblies 6 to move up and down periodically in opposite motion postures, thereby realizing the continuous transfer of the divided grains; The grain collecting assembly 5 includes a grain collecting box 501, a guide pipe 502, a flow limiting valve plate 503, a positioning seat 504 and a first spring 505, wherein the grain collecting box 501 is fixedly installed on the outside of the discharge port and communicates with the drying chamber, the bottom wall of the grain collecting box 501 is equipped with a guide pipe 502, the top of the guide pipe 502 is movably connected to the flow limiting valve plate 503, the flow limiting valve plate 503 is connected to the positioning seat 504 through the first spring 505, and the positioning seat 504 is fixedly installed on the collecting box 501. On the outer wall of the grain box 501, when the left grain transport box 601 slides down to the lowest point along the lifting frame 7, the grain inlet of the grain transport box 601 is aligned with the guide pipe 502. At this time, the slide rod 602 has passed the inflection point at the bottom end of the U-shaped slide groove in the lifting frame 7 and pressed on the flow limiting valve plate 503 until the opening of the flow limiting valve plate 503 is aligned with the guide pipe 502, so that the grain collected in the grain collection box 501 can be introduced into the grain transport box 601 through the unobstructed guide pipe 502, thereby realizing the quantitative transfer of grain; The return material assembly 8 includes a return material pipe 801, a base plate 802, a recursive block 803, a rocker arm 804 and a second spring 805, wherein the return material pipe 801 is fixedly installed on the outer wall of the oven 1 and communicates with the buffer layer, the top of the return material pipe 801 is fixedly connected to the base plate 802, the inner cavity of the return material pipe 801 is slidably connected to the recursive block 803, the steering knuckle at the bottom end of the rocker arm 804 is movably connected to the recursive block 803, and the push plate at the top end of the rocker arm 804 is connected to the base plate 802 through the second spring 805. When the grain transport box 601 slides to the highest point along the lifting frame 7, its grain discharge port is aligned with the return material pipe 801 on the same side. At this time, the slide bar 602 has passed the inflection point at the top of the U-shaped slide groove in the lifting frame 7 and pressed on the rocker bar 804 until the bottom end of the rocker bar 804 pushes the recursive block 803 to slide and press toward the side of the hatch 604. Then, the hatch 604 flips open the inner cavity of the grain transport box 601 with the elastic shaft 605 as the axis, so that the grain loaded in the grain transport box 601 can be collected into the buffer layer in the drying oven 1 through the connected grain discharge port and return pipe 801, thereby realizing the unloading and recycling of the grain in the grain transport box 601. Conversely, when the external force on the push plate at the top of the rocker bar 804 is removed, the rocker bar 804 elastically returns to its original position, and the recursive block 803 slides inward. The grain transport component 6 includes a grain transport box 601, a slide bar 602, a rack 603, a hatch 604 and an elastic shaft 605, wherein the grain transport box 601 is slidably connected to the inner side of the lifting frame 7, and the top of the grain transport box 601 is movably connected with a slide bar 602, one end of the slide bar 602 is slidably connected to the U-shaped slide groove of the lifting frame 7, and the other end of the slide bar 602 is extended and retracted with the up and down movement of the slide bar 602 to pass through the side wall of the grain transport box 601, and the grain transport box 601 is fixedly connected to the side of the grain collecting component 5, the rack 603 is meshed with the gear 404, and the grain transport box 601 is fixedly connected to the side of the grain collecting component 5. The same side wall is provided with a grain inlet and a grain discharge outlet distributed up and down, and a hatch 604 is provided in the grain discharge outlet through an elastic shaft 605. When the grain transport box 601 slides down to the lowest point along the lifting frame 7, the grain collected in the grain collection box 501 can be introduced into the grain transport box 601 through the unobstructed guide pipe 502, thereby realizing the quantitative transfer of grain. When the grain transport box 601 slides up to the highest point along the lifting frame 7, the grain loaded in the grain transport box 601 can be collected into the slow-release layer in the drying oven 1 through the connected grain discharge outlet and return pipe 801, thereby realizing the unloading and recovery of the divided grain in the grain transport box 601. In this embodiment, it should be specifically explained that a through hole is opened on the flow-limiting valve disc 503. The flow-limiting valve disc 503 can be pushed by the slide rod 602 to move toward the side of the positioning seat 504 and compress the first spring 505 until the through hole of the flow-limiting valve disc 503 is aligned with the guide pipe 502. Then, the grain collected in the grain collection box 501 can be introduced into the grain transport box 601 through the unobstructed guide pipe 502, thereby realizing the quantitative transfer of grain. After the external force on the flow-limiting valve disc 503 is removed, the flow-limiting valve disc 503 can be elastically reset and seal the guide pipe 502 to stop the discharge of grain. When one end of the slide rod 602 reaches the lowest inflection point of the U-shaped chute, the other end of the slide rod 602 is at least pulled out to the outside of the grain collecting box 501 to prevent the grain collecting box 501 from interfering with the movement trajectory of the grain transport component 6; The elastic shaft 605 is mainly composed of a rod and a torsion spring. When an external force acts on the rod to rotate it around the axis, the torsion spring is compressed or stretched, thereby storing elastic potential energy. When the external force disappears, the torsion spring releases this energy, causing the rod to return to its original position.

[0031] Reference Figure 3 and Figure 10 The transmission assembly 9 includes a second screw rod 901, a U-shaped bracket 902, a second pulley 903 and a slider 904, wherein the second screw rod 901 is rotatably connected to the U-shaped bracket 902, and one end of the second screw rod 901 is equipped with a second pulley 903, wherein the second pulley 903 is connected to a first pulley 403 through a synchronous belt transmission, and the slider 904 is slidably arranged on the outside of the second screw rod 901 and is threadedly sleeved with the second screw rod 901; The mixing assembly 10 includes a U-shaped connecting rod 1001, an elastic telescopic rod 1002, a pushing plate 1003 and a dredging head 1004, wherein the two ends of the U-shaped connecting rod 1001 are respectively connected to the slider 904 and the elastic telescopic rod 1002, the telescopic end of the elastic telescopic rod 1002 is equipped with a pushing plate 1003, the bottom end of the pushing plate 1003 is fixedly connected to the dredging head 1004, and the slider 904 slidably arranged on the periphery of the U-shaped bracket 902 can carry the mixing assembly 10 to move back and forth in the slow-moving layer as the second screw rod 901 rotates alternately in the forward and reverse directions. On the one hand, the moving pushing plate 1003 can turn over and mix the grain entering the slow-moving layer, and on the other hand, the moving dredging head 1004 can telescopically poke through the grain separation hole to avoid the sieve plate 3 from being blocked and losing the grain separation ability; The driving assembly 11 includes a reversible motor 1101, a base 1102 and a third pulley 1103, wherein the reversible motor 1101 is assembled above the base 2 through the base 1102, and the output shaft of the reversible motor 1101 is fixedly connected to the third pulley 1103 through a coupling, and the third pulley 1103 is connected to the other first pulley 403 through a synchronous belt.

[0032] Working principle of the present invention: Grain is fed into the slow-heating layer above the sieve plate 3 from the feed port of the drying oven 1. After the grain is fed, the grain in the slow-heating layer passes through the grain-dividing holes and enters the drying chamber in a continuous portion and exchanges heat with the chamber. This is the main grain drying step, until it falls onto the upper layer of the heat-conducting plate 12. The heat-conducting plate 12 can conduct heat from the heater to provide auxiliary heating for the falling grain, thus realizing multi-stage grain drying. Next, the reversible motor 1101 is started, and the output shaft of the reversible motor 1101 drives the third pulley 1103 connected thereto to rotate alternately in forward and reverse periods through the coupling. The rotating third pulley 1103 drives the first pulley 403 through the synchronous belt, so that the first screw rod 401, the first pulley 403 and the gear 404 rotate coaxially, so that the grain pushing rack 402 slidingly arranged above the heat conducting plate 12 can move back and forth in the drying chamber with the forward and reverse alternating rotation of the first screw rod 401, so as to push the grain to fall. The grain on the upper layer of the heat conducting plate 12 is pushed into the grain collecting box 501 from the discharge port of the drying oven 1 for collection. At the same time, the gears 404 connected to the two ends of the first screw rod 401 drive the left and right racks 603 to move in reverse, that is, when the left grain transport component 6 descends, the right grain transport component 6 rises. When the left grain transport box 601 slides down to the lowest point along the lifting frame 7, the grain inlet of the grain transport box 601 is aligned with the guide pipe 502. At this time, the slide rod 602 has passed the inflection at the bottom end of the U-shaped slide groove in the lifting frame 7. The right side of the grain transport box 601 has slid to the highest point along the lifting frame 7, and its grain discharge port is aligned with the return pipe 801 on the same side. At this time, the slide bar 602 has passed the inflection point at the top of the U-shaped slide groove in the lifting frame 7 and pressed on the rocker bar 804 until the rocker bar 804 bottoms out. The recursive block 803 is pushed to slide and press toward one side of the hatch 604, and then the hatch 604 flips open the inner cavity of the grain transport box 601 with the elastic shaft 605 as the axis, so that the grain loaded in the grain transport box 601 can be collected into the slow-release layer in the drying oven 1 through the connected grain discharge port and return pipe 801, thereby realizing the unloading and recovery of the grain in the grain transport box 601. As the conveying component 4 rotates forward and backward, the left and right grain transport components 6 move up and down periodically in opposite motion postures, realizing the collection, transportation and unloading of the grain; At the same time, the first pulley 403 drives the second pulley 903 through the synchronous belt, so that the second screw rod 901 and the second pulley 903 rotate coaxially, so that the slider 904 slidingly arranged on the outer periphery of the U-shaped bracket 902 can carry the mixing component 10 to move back and forth in the slow-moving layer as the second screw rod 901 rotates alternately forward and backward. On the one hand, the moving pushing plate 1003 can turn over and mix the grain entering the slow-moving layer, and on the other hand, the moving U-shaped connecting rod 1001 carries the clearing head 1004 attached to the top wall of the screen plate 3 and moves. Under the elastic force of the elastic telescopic rod 1002, the clearing head 1004 can telescopically poke through the grain separation hole to avoid blockage of the screen plate 3 and loss of grain separation ability.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or modifications within the technical scope disclosed by the present invention; according to the technical plan and its improved conception of the present invention, these should be included under the protection of the present invention.

Claims

1. An automatic mixing drying machine, comprising a drying oven (1) and a base (2) mounted at the bottom thereof, characterized in that: The oven (1) is equipped with a sieve plate (3), and the sieve plate (3) divides the oven (1) into two upper and lower chambers, namely a slow-release layer and a drying chamber, and the slow-release layer and the drying chamber are respectively provided with a mixing component (10) and a conveying component (4), and the left and right sides of the bottom end of the oven (1) are provided with a grain collecting component (5) connected to the drying chamber, and the periphery of the grain collecting component (5) is provided with a grain transporting component (6) that can move up and down along the inner side of a lifting frame (7), and the bottom end of the lifting frame (7) is installed on the base (2), and the left and right sides of the top end of the oven (1) are provided with a return component (8) connected to the slow-release layer, and the outside of the oven (1) is also provided with a driving component (11) and a transmission component (9) for driving the conveying component (4) and the mixing component (10), respectively; The material return assembly (8) comprises a material return pipe (801), a base plate (802), a recursive block (803), a swing rod (804) and a second spring (805), wherein the material return pipe (801) is fixedly mounted on the outer wall of the oven (1) and communicates with the slow-release layer; The grain transport component (6) comprises a grain transport box (601), a slide bar (602), a rack (603), a hatch (604) and an elastic shaft (605), wherein the grain transport box (601) is slidably connected to the inner side of the lifting frame (7), and the top of the grain transport box (601) is movably plugged with a slide bar (602), one end of the slide bar (602) is slidably connected to the U-shaped slide groove of the lifting frame (7), and the other end of the slide bar (602) is extended and retracted to penetrate the side wall of the grain transport box (601) as it moves up and down, and the grain transport box (601) is fixedly connected to a rack (603) on one side close to the grain collecting component (5), and the rack (603) and the gear (404) are connected to each other. ) are meshed with each other, and a grain inlet and a grain discharge outlet are provided on the same side wall of the grain transport box (601) and are distributed up and down. A hatch (604) is provided in the grain discharge outlet to rotate through an elastic shaft (605). When the grain transport box (601) slides down along the lifting frame (7) to the lowest point, the grain collected in the grain collection box (501) can be introduced into the grain transport box (601) through a smooth guide pipe (502), thereby realizing the quantitative transfer of grain. When the grain transport box (601) slides up along the lifting frame (7) to the highest point, the grain loaded in the grain transport box (601) can be collected into the slow-release layer through the connected grain discharge outlet and return pipe (801), thereby realizing the unloading and recovery of the divided grain in the grain transport box (601).

2. The automatic mixing dryer according to claim 1, characterized in that: The conveying assembly (4) includes a first screw rod (401), a grain pushing rack (402), a first pulley (403) and a gear (404), wherein the first screw rod (401) is rotatably arranged in the drying chamber of the oven (1), and the left and right ends of the first screw rod (401) are movably passed through the oven (1) and are sequentially equipped with the first pulley (403) and the gear (404) from the inside to the outside, the grain pushing rack (402) is threadedly sleeved on the threaded section of the first screw rod (401), and the bottom end of the grain pushing rack (402) is in contact with the top wall of the heat conducting plate (12) and is slidably connected thereto.

3. The automatic mixing dryer according to claim 1, characterized in that: The grain collecting component (5) comprises a grain collecting box (501), a material guiding pipe (502), a flow limiting valve plate (503), a positioning seat (504) and a first spring (505), wherein the grain collecting box (501) is fixedly installed outside the material outlet and communicates with the drying chamber, the bottom wall of the grain collecting box (501) is equipped with a material guiding pipe (502), the top end of the material guiding pipe (502) is movably connected with the flow limiting valve plate (503), the flow limiting valve plate (503) is transmission-connected to the positioning seat (504) via the first spring (505), and the positioning seat (504) is fixedly installed on the outer wall of the grain collecting box (501).

4. The automatic mixing dryer according to claim 3, characterized in that: The flow limiting valve plate (503) is provided with a through opening. The flow limiting valve plate (503) can move toward the side of the positioning seat (504) under the push of the sliding rod (602) and compress the first spring (505) until the through opening of the flow limiting valve plate (503) is aligned with the material guide pipe (502). The grain collected in the grain collecting box (501) can be introduced into the grain transport box (601) through the unobstructed material guide pipe (502), thereby realizing the quantitative transfer of the grain. After the external force on the flow limiting valve plate (503) is removed, the flow limiting valve plate (503) can be elastically reset and seal and block the material guide pipe (502) to stop discharging the grain.

5. The automatic mixing dryer according to claim 4, characterized in that: When one end of the slide rod (602) reaches the lowest turning point of the U-shaped slide groove, the other end of the slide rod (602) is at least pulled out to the outside of the grain collecting box (501) to prevent the grain collecting box (501) from interfering with the movement trajectory of the grain transport component (6). The elastic shaft (605) is mainly composed of a rod body and a torsion spring. When an external force acts on the rod body to rotate it around the axis, the torsion spring is compressed or stretched, thereby storing elastic potential energy. When the external force disappears, the torsion spring releases this energy to restore the rod body to its original position.

6. The automatic mixing dryer according to claim 1, characterized in that: The transmission assembly (9) comprises a second screw rod (901), a U-shaped bracket (902), a second pulley (903) and a slider (904), wherein the second screw rod (901) is rotatably connected to the U-shaped bracket (902), one end of the second screw rod (901) is equipped with a second pulley (903), wherein the second pulley (903) is connected to a first pulley (403) via a synchronous belt transmission, and the slider (904) is slidably arranged outside the second screw rod (901) and is threadedly sleeved with the second screw rod (901).

7. The automatic mixing dryer according to claim 6, characterized in that: The mixing assembly (10) comprises a U-shaped connecting rod (1001), an elastic telescopic rod (1002), a pushing plate (1003) and a dredging head (1004), wherein the two ends of the U-shaped connecting rod (1001) are respectively connected to a sliding block (904) and the elastic telescopic rod (1002), the telescopic end of the elastic telescopic rod (1002) is equipped with a pushing plate (1003), and the bottom end of the pushing plate (1003) is fixedly connected to the dredging head (1004).

8. The automatic mixing dryer according to claim 2, characterized in that: The driving assembly (11) comprises a reversible motor (1101), a machine base (1102) and a third pulley (1103), wherein the reversible motor (1101) is assembled on the top of the base (2) via the machine base (1102), the output shaft of the reversible motor (1101) is fixedly connected to the third pulley (1103) via a coupling, and the third pulley (1103) is transmission-connected to another first pulley (403) via a synchronous belt.

9. The automatic mixing dryer according to claim 1, characterized in that: The top end of the return tube (801) is fixedly connected to the base plate (802), the inner cavity of the return tube (801) is slidably connected to the recursive block (803), the steering knuckle at the bottom end of the swing rod (804) is movably engaged with the recursive block (803), and the push plate at the top end of the swing rod (804) is transmission-connected to the base plate (802) via a second spring (805).

10. The automatic mixing dryer according to claim 7, characterized in that: The grains passing through the grain separation holes fall onto the upper layer of the heat conducting plate (12), and the heat conducting plate (12) can conduct the heat of the heater to heat the fallen grains. The bottom wall of the drying chamber is equipped with a heat conducting plate (12) carrying a conveying assembly (4). The top wall of the oven (1) is a material inlet, and the bottom end of the oven (1) is provided with material outlets located on the left and right sides of the heat conducting plate (12). The surface of the sieve plate (3) is provided with grain separation holes, and the grains in the slow cooling layer pass through the grain separation holes and enter the drying chamber in the form of continuous portions and exchange heat with the grain separation holes. The grain separation holes are inverted cone shape, and the grain separation holes fit with the dredging head (1004) so ​​that the grain separation holes can smoothly enter or leave the grain separation holes.

Images