Air source heat pump drying device for quickly dehumidifying grains

Abstract

The invention relates to the field of food drying, in particular to an air source heat pump drying device for rapidly dehumidifying grains. The technical problem that after granular grains are bonded and caked, hot air cannot fully pass through gaps among the grains, then the granular grains are heated unevenly, and the drying effect and efficiency of the granular grains are poor is solved. An air source heat pump drying device for rapid moisture removal of grains comprises a bottom frame, two hollow cylinders and a net-shaped hopper, the two hollow cylinders are fixedly installed on the bottom frame, and the net-shaped hopper is installed between the two hollow cylinders. Granular grains at the inner bottom of the outer barrel are continuously conveyed into the net-shaped hopper through continuous rotation of the six material receiving plates, and heated air dries the granular grains discharged out of a discharging opening of the net-shaped hopper. The situation that moisture on the surface of grain is not easy to evaporate due to the fact that granular grain is accumulated at the inner bottom of the outer barrel can be avoided, and the granular grain can be preliminarily dried.

Description

Technical Field

[0001] The invention relates to the field of food drying, and in particular to an air source heat pump drying device for rapidly dehumidifying grains. Background Art

[0002] Grain drying is an important part of post-harvest grain processing, which helps to ensure food security, reduce waste, and improve the economic benefits of farmers and the grain industry.

[0003] When drying granular grains such as rice that are easy to stick together, the initial drying process will cause the grains to stick together and clump together due to their high initial moisture content. After the grains stick together and clump together, the hot air cannot fully pass through the gaps between the grains, causing the granular grains to be heated unevenly, resulting in poor drying effect and efficiency of the granular grains. Summary of the invention

[0004] In order to overcome the shortcomings that granular grains are stuck together and agglomerated, which will cause hot air to be unable to fully pass through the gaps between the grains, thereby causing the granular grains to be heated unevenly, resulting in poor drying effect and efficiency of the granular grains, the present invention aims to provide an air source heat pump drying device for rapid dehumidification of grains. During the drying process of the granular grains, the stuck and agglomerated granular grains can be stirred and dispersed, so that hot air can fully pass through the gaps between the grains, so that every part of the grain can be heated evenly, reducing the phenomenon of agglomeration and uneven heating in certain areas of the grain, and improving the drying effect and efficiency of the granular grains.

[0005] The technical solution of the present invention is: an air source heat pump drying device for rapid dehumidification of grain, comprising a base frame, a hollow cylinder, a mesh hopper, an outer cylinder, a cover plate, an air inlet pipe, an air extraction pipe, a driving mechanism and a feeding mechanism, wherein two hollow cylinders are fixedly mounted on the base frame, the sides of the two hollow cylinders close to each other are closed, and the sides of the two hollow cylinders away from each other are open, a mesh hopper is mounted between the two hollow cylinders, an outer cylinder is rotatably mounted between the two hollow cylinders, the upper part of the mesh hopper is open, a discharge port is provided at the lower part of the mesh hopper, the mesh hopper is located in the outer cylinder, a cover plate is detachably mounted on the outer cylinder, an air inlet pipe and an air extraction pipe are respectively mounted on the sides of the two hollow cylinders close to each other, the two air inlet pipes are located below the two air extraction pipes, a driving mechanism is arranged on the base frame and the outer cylinder, the driving mechanism is used to drive the outer cylinder to rotate, a feeding mechanism is arranged on the base frame and the outer cylinder, and the feeding mechanism is used to transport grain into the mesh hopper.

[0006] In addition, it is particularly preferred that the driving mechanism includes a bidirectional servo motor, a rotating shaft, a column gear and a driving outer gear ring, a bidirectional servo motor is installed on one side of the base frame, a rotating shaft is installed on each of the two output shafts of the bidirectional servo motor, a column gear is installed on each of the two rotating shafts, two driving outer gear rings are installed on the curved surface of the outer cylinder, and the two column gears are respectively meshed with the two driving outer gear rings.

[0007] In addition, it is particularly preferred that the feeding mechanism includes a horizontal axis, a material receiving plate, a torsion spring, a hexagonal prism, an outer ring and an inner ring, six horizontal axes are evenly spaced and rotatably arranged on the outer cylinder, a material receiving plate is fixedly installed in the middle of each horizontal axis, the six material receiving plates are all located in the outer cylinder, a torsion spring is respectively connected between the two ends of each horizontal axis and the two sides of the outer cylinder, a hexagonal prism is fixedly installed at both ends of each horizontal axis, an outer ring and an inner ring are respectively installed on both sides of the base frame, a limiting groove is formed between the outer ring and the inner ring on the same side, and the hexagonal prism on the same side is located in the limiting groove formed between the outer ring and the inner ring on the same side.

[0008] In addition, it is particularly preferred that it also includes a toggle mechanism, which is arranged on two hollow cylinders and two rotating shafts. The toggle mechanism is used to toggle the grain accumulated in the mesh hopper. The toggle mechanism includes a fixed plate, a toggle shaft, a toggle frame and a transmission assembly. A fixed plate is installed in each of the two hollow cylinders, and a toggle shaft is rotatably provided between the two fixed plates. The toggle shaft rotatably passes through the two hollow cylinders, and a plurality of groups of toggle frames are fixedly connected in the toggle shaft. Two transmission assemblies are connected between the ends of the two rotating shafts that are away from each other and the two ends of the toggle shaft.

[0009] In addition, it is particularly preferred that the transmission assembly consists of two pulleys and a flat belt, the two pulleys are respectively mounted on the rotating shaft and the shifting shaft, and the flat belt is wound between the two pulleys.

[0010] In addition, it is particularly preferred that it also includes a dispersing mechanism, which is arranged on two hollow cylinders and a toggle shaft. The dispersing mechanism is used to disperse the grain being dried, and the dispersing mechanism includes a sliding frame, a reset spring, a dispersing grid frame, a roller and a cam. A sliding frame is slidably provided on each of the two hollow cylinders, and two reset springs are connected between the sliding frame and the hollow cylinder. The two sliding frames are symmetrically arranged, and a dispersing grid frame is installed between the two sliding frames. The dispersing grid frame is located directly below the discharge port of the mesh hopper. A roller is rotatably provided on the upper part of the two sliding frames, and two cams are fixedly installed on the toggle shaft. The two cams are respectively located in the two hollow cylinders, and each cam is provided with four protrusions, and the cam is in contact with the roller.

[0011] Furthermore, it is particularly preferred that the mesh openings on the scattering grid are larger than the mesh openings on the mesh hopper, and the scattering grid is located directly below the discharge port of the mesh hopper.

[0012] In addition, it is particularly preferred that a guiding mechanism is also included, which is arranged on two hollow cylinders and a toggle shaft, and is used to guide the grain discharged from the mesh hopper. The guiding mechanism includes a short shaft, a guide plate, a pendulum gear, a three-bracket, a toothless inner gear ring and a toothless outer gear ring. A short shaft is rotatably provided on the side where the two hollow cylinders are close to each other, a guide plate is installed between the two short shafts, and the guide plate is located at the discharge port of the mesh hopper, and a pendulum gear is installed on the ends of the two short shafts that are away from each other, and two three-brackets are installed on the toggle shaft, and the two three-brackets are respectively located in the two hollow cylinders, and each of the three-brackets is respectively installed with a toothless inner gear ring and a toothless outer gear ring, and the pendulum gear on the same side is located between the toothless inner gear ring and the toothless outer gear ring on the same side.

[0013] In addition, it is particularly preferred that several groups of drive teeth are evenly spaced on the toothless inner gear ring and the toothless outer gear ring, each group of drive teeth is composed of three tooth blocks, and the several groups of drive teeth on the toothless inner gear ring and the several groups of drive teeth on the toothless outer gear ring are staggered.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The granular grains at the bottom of the outer cylinder are continuously transported to the mesh hopper through the continuous rotation of the six receiving plates, and then the granular grains are discharged into the bottom of the outer cylinder through the discharge port on the mesh hopper, and the heated air is discharged through the air inlet pipe to dry the granular grains discharged from the discharge port of the mesh hopper, so that the granular grains can be prevented from accumulating at the bottom of the outer cylinder, which makes it difficult for the moisture on the surface of the grains to evaporate, and the granular grains can be quickly dried preliminarily. During drying, the moisture content of the grains is relatively high, and a high temperature of 50°C to 60°C is preferably used to quickly evaporate the surface moisture, which will prompt the moisture to quickly dissipate from the surface of the grains, and then the moisture will be quickly discharged from the outer cylinder through the exhaust pipe and the suction pipe, so that the surface moisture can be quickly evaporated to ensure efficient dehumidification in the initial stage.

[0015] 2. As the four protrusions on the two cams contact and separate from the two rollers in turn, the two sliding frames will continuously move up and down under the action of the reset spring, and the two sliding frames will drive the scattering rack to continuously shake up and down, and the granular grains in the mesh hopper will be discharged onto the scattering rack. Under the action of the scattering rack, the discharged granular grains can be further scattered, further avoiding the granular grains from sticking to each other, so that the hot air can pass through the gaps between the granular grains more fully, thereby further improving the drying quality and efficiency of the granular grains.

[0016] 3. As several groups of driving teeth on the toothless inner gear ring and several groups of driving teeth on the toothless outer gear ring mesh with the pendulum gear in turn, the two pendulum gears will rotate back and forth, and the two pendulum gears will drive the two short shafts to rotate back and forth continuously, and the two short shafts will drive the guide plates to swing back and forth continuously, and the guide plates can guide the granular grains discharged from the mesh hopper, so that the granular grains can be discharged more evenly onto the scattering grid, and then the granular grains can be scattered more fully, thereby further improving the drying quality and efficiency of the granular grains. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the disassembled three-dimensional structure of the base frame, hollow cylinder, mesh hopper, outer cylinder, cover plate, air inlet pipe and air exhaust pipe of the present invention.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the hollow cylinder, mesh hopper and outer cylinder of the present invention.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the driving mechanism and the feeding mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the toggle mechanism of the present invention.

[0022] Figure 6 for Figure 5 The enlarged schematic diagram of part A in the middle.

[0023] Figure 7 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the driving mechanism and the feeding mechanism of the present invention.

[0024] Figure 8 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the feeding mechanism of the present invention.

[0025] Fig. 9 It is a schematic cross-sectional three-dimensional structure diagram of the outer cylinder and the feeding mechanism of the present invention.

[0026] Fig.10 It is a three-dimensional structural schematic diagram of the shifting shaft and the guide mechanism of the present invention.

[0027] Fig.11 It is a three-dimensional structural schematic diagram of the feeding mechanism and the shifting mechanism of the present invention.

[0028] Fig.12 It is a three-dimensional structural schematic diagram of the shifting mechanism and the breaking mechanism of the present invention.

[0029] Fig.13It is a three-dimensional structural schematic diagram of the toggle mechanism and the guide mechanism of the present invention.

[0030] Fig.14 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the toggle mechanism and the dispersing mechanism of the present invention.

[0031] Fig.15 It is a schematic diagram of the disassembled three-dimensional structure of some parts of the guide mechanism of the present invention.

[0032] Fig.16 It is a three-dimensional structural schematic diagram of the hollow cylinder, the shifting mechanism and the breaking mechanism of the present invention.

[0033] Fig.17 It is a three-dimensional structural schematic diagram of the hollow cylinder, the toggle mechanism and the guide mechanism of the present invention.

[0034] Figure numbers: 1, base frame, 2, hollow cylinder, 3, mesh hopper, 4, outer cylinder, 5, cover plate, 6, air inlet pipe, 7, exhaust pipe, 81, bidirectional servo motor, 82, rotating shaft, 83, column gear, 84, driving outer gear ring, 91, horizontal axis, 92, receiving plate, 93, torsion spring, 94, hexagonal prism, 95, outer ring, 96, inner ring, 101, fixed plate, 102, toggle shaft, 103, toggle frame, 104, transmission assembly, 111, sliding frame, 112, reset spring, 113, breaking up the mesh frame, 114, roller, 115, cam, 121, short shaft, 122, guide plate, 123, pendulum gear, 124, three brackets, 125, missing tooth inner gear ring, 126, missing tooth outer gear ring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0036] Embodiment 1: An air source heat pump drying device for rapid dehumidification of grain, such as Figure 1-Figure 8As shown, it includes a base frame 1, a hollow cylinder 2, a mesh hopper 3, an outer cylinder 4, a cover plate 5, an air inlet pipe 6, an air extraction pipe 7, a driving mechanism and a feeding mechanism. Two hollow cylinders 2 are fixedly installed on the base frame 1. The side of the two hollow cylinders 2 close to each other is a closed setting, and the side of the two hollow cylinders 2 away from each other is an open setting. A mesh hopper 3 is installed between the two hollow cylinders 2. An outer cylinder 4 is rotatably provided between the two hollow cylinders 2 through a bearing. The upper part of the mesh hopper 3 is an open setting. A discharge port is provided at the lower part of the mesh hopper 3, the mesh hopper 3 is located inside the outer cylinder 4, a cover plate 5 is detachably mounted on the outer cylinder 4, an air inlet pipe 6 and an air exhaust pipe 7 are respectively mounted on the sides of the two hollow cylinders 2 close to each other, the two air inlet pipes 6 are located below the two air exhaust pipes 7, a driving mechanism is provided on the base frame 1 and the outer cylinder 4, the driving mechanism is used to drive the outer cylinder 4 to rotate, a feeding mechanism is provided on the base frame 1 and the outer cylinder 4, the feeding mechanism is used to transport grain into the mesh hopper 3.

[0037] The driving mechanism includes a bidirectional servo motor 81, a rotating shaft 82, a column gear 83 and a driving outer gear ring 84. A bidirectional servo motor 81 is installed on one side of the base frame 1. A rotating shaft 82 is installed on each of the two output shafts of the bidirectional servo motor 81 through a coupling. A column gear 83 is installed on each of the two rotating shafts 82 in a keyed manner. Two driving outer gear rings 84 are installed on the curved surface of the outer cylinder 4, and the two column gears 83 are respectively meshed with the two driving outer gear rings 84.

[0038] The feeding mechanism includes a transverse axis 91, a receiving plate 92, a torsion spring 93, a hexagonal prism 94, an outer ring 95 and an inner ring 96. Six transverse axes 91 are evenly spaced and rotatably arranged on the outer cylinder 4 through bearings. A receiving plate 92 for conveying granular grain is fixedly installed in the middle of each transverse axis 91. The six receiving plates 92 are all located in the outer cylinder 4. A torsion spring 93 is respectively connected between the two ends of each transverse axis 91 and the two sides of the outer cylinder 4. A hexagonal prism 94 is fixedly installed at both ends of each transverse axis 91. An outer ring 95 and an inner ring 96 are respectively installed on both sides of the base frame 1. A limiting groove is formed between the outer ring 95 and the inner ring 96 on the same side. The hexagonal prism 94 on the same side is located in the limiting groove formed between the outer ring 95 and the inner ring 96 on the same side.

[0039] When drying the granular grain, the operator first connects an air heat source pump to the two air inlet pipes 6, and then connects an air suction pipe to the two air extraction pipes 7. Then the operator opens the cover plate 5 and adds an appropriate amount of granular grain into the mesh hopper 3. The granular grain is discharged to the bottom of the outer cylinder 4 through the discharge port below the mesh hopper 3. Then the operator covers the cover plate 5 again. Subsequently, the operator starts the air heat source pump to heat the air. The heated air is then discharged through the air inlet pipe 6 to dry the granular grain discharged from the discharge port of the mesh hopper 3. At the same time, the operator starts the two output shafts of the bidirectional servo motor 81 to rotate. The output shaft of the bidirectional servo motor 81 drives the two rotating shafts 82 to rotate. The two rotating shafts 82 drive the two The two column gears 83 rotate, and the two column gears 83 drive the two driving outer gear rings 84 to rotate. The two driving outer gear rings 84 drive the outer cylinder 4 and the cover plate 5 to rotate. The outer cylinder 4 drives the six horizontal shafts 91, the six receiving plates 92, the twelve torsion springs 93 and the twelve hexagonal prisms 94 to rotate. The twelve hexagonal prisms 94 rotate along the limiting grooves formed between the outer ring 95 and the inner ring 96. Under the limiting action of the limiting grooves formed between the outer ring 95 and the inner ring 96, the twelve hexagonal prisms 94 can be limited, so that the horizontal shaft 91 and the receiving plates 92 can be limited. With the rotation of the six receiving plates 92, the granular food at the bottom of the outer cylinder 4 can be continuously transported to the top of the mesh hopper 3. After the two hexagonal prisms 94 move to the top The granular grains on the upper receiving plate 92 will fall into the mesh hopper 3, and then, under the reset action of the two torsion springs 93, the upper receiving plate 92, the horizontal axis 91 and the two hexagonal prisms 94 will swing and reset. With the rotation of the upper receiving plate 92, the horizontal axis 91 and the two hexagonal prisms 94, the two hexagonal prisms 94 will be stuck in the limit groove formed between the outer ring 95 and the inner ring 96 again after rotation. The granular grains on the bottom of the outer cylinder 4 are continuously fed by the continuous rotation of the six receiving plates 92. The granular grain is transported to the mesh hopper 3, and then the granular grain is discharged into the bottom of the outer cylinder 4 through the discharge port on the mesh hopper 3. The heated air is discharged through the air inlet pipe 6 to dry the granular grain discharged from the discharge port of the mesh hopper 3. In this way, the granular grain can be prevented from accumulating at the bottom of the outer cylinder 4, which makes it difficult for the moisture on the surface of the grain to evaporate, and the granular grain can be preliminarily dried quickly. During drying, the moisture content of the grain is relatively high, and a high temperature of 50°C to 60°C is preferably used to quickly evaporate the surface moisture. This high temperature will cause the moisture to quickly dissipate from the surface of the grain, and then the moisture will be quickly discharged from the outer cylinder 4 through the exhaust pipe 7 and the suction pipe. In this way, the surface moisture can be quickly evaporated to ensure efficient moisture removal in the initial stage.After the initial dehumidification, the moisture on the grain surface gradually decreases. At this time, the temperature is lowered to about 40°C to 50°C, so that the moisture diffuses from the inside of the grain to the outside and continues to evaporate evenly. After the granular grain is dried and cooled to room temperature, the operator turns off the air heat source pump and the bidirectional servo motor 81, and controls the cover plate 5 to face downward. Then the operator opens the cover plate 5, discharges all the granular grain in the outer cylinder 4, and then starts the bidirectional servo motor 81 to drive the cover plate 5 to rotate to the initial position. Then, add an appropriate amount of granular grain into the mesh hopper 3 again and cover the cover plate 5. Repeat this process to continuously perform the drying operation of the granular grain with rapid dehumidification.

[0040] Embodiment 2: Based on embodiment 1, Figure 9-Figure 16 As shown, it also includes a toggle mechanism, which is arranged on two hollow cylinders 2 and two rotating shafts 82. The toggle mechanism is used to toggle the grain accumulated in the mesh hopper 3. The toggle mechanism includes a fixed plate 101, a toggle shaft 102, a toggle frame 103 and a transmission assembly 104. A fixed plate 101 is installed in each of the two hollow cylinders 2. A toggle shaft 102 is rotatably provided between the two fixed plates 101 through a bearing. The toggle shaft 102 rotatably passes through the two hollow cylinders 2. Several groups of toggle frames 103 for toggling the agglomerated grain are fixedly connected in the toggle shaft 102. Two transmission assemblies 104 are connected between the ends of the two rotating shafts 82 that are away from each other and the two ends of the toggle shaft 102.

[0041] The transmission assembly 104 is composed of two pulleys and a flat belt. The two pulleys are respectively mounted on the rotating shaft 82 and the shifting shaft 102, and the flat belt is wound between the two pulleys.

[0042] The scattering mechanism is also included, which is arranged on the two hollow cylinders 2 and the toggle shaft 102. The scattering mechanism is used to scatter the grains being dried. The scattering mechanism includes a sliding frame 111, a return spring 112, a scattering grid frame 113, a roller 114 and a cam 115. A sliding frame 111 is slidably provided on the two hollow cylinders 2, two return springs 112 are connected between the sliding frame 111 and the hollow cylinder 2, the two sliding frames 111 are symmetrically arranged, a scattering grid frame 113 for breaking up agglomerated grains is installed between the two sliding frames 111, the scattering grid frame 113 is located just below the discharge port of the mesh hopper 3, a roller 114 is rotatably provided on the upper parts of the two sliding frames 111, and two cams 115 are fixedly installed on the toggle shaft 102 in a key connection manner. The two cams 115 are respectively located in the two hollow cylinders 2, each cam 115 is provided with four protrusions, and the cam 115 is in contact with the roller 114.

[0043] The mesh openings on the scattering grid 113 are larger than the mesh openings on the mesh hopper 3 , and the scattering grid 113 is located directly below the discharge port of the mesh hopper 3 .

[0044] The two rotating shafts 82 rotate through the two transmission components 104 to drive the toggle shaft 102 to rotate, and the toggle shaft 102 drives the toggle frame 103 to rotate. The two fixed plates 101 guide the toggle shaft 102, and the toggle frame 103 can toggle the granular grains in the mesh hopper 3, and can preliminarily disperse the agglomerated granular grains to avoid the granular grains from sticking to each other, so that the hot air can fully pass through the gaps between the granular grains, thereby improving the drying quality and efficiency of the granular grains.

[0045] When the toggle shaft 102 rotates, the two cams 115 are driven to rotate, and the four protrusions on the two cams 115 contact the two rollers 114 in turn and then separate. After the protrusions on the two cams 115 contact the two rollers 114, the two rollers 114 drive the two sliding frames 111 to move downward, and the return spring 112 is compressed accordingly. After the protrusions on the two cams 115 separate from the two rollers 114, under the action of the return spring 112, the two sliding frames 111 will move upward, and the four protrusions on the two cams 115 contact the two rollers 114 in turn. After separation, under the action of the reset spring 112, the two sliding frames 111 will continuously move back and forth up and down, and the two sliding frames 111 will drive the scattering rack 113 to continuously shake back and forth up and down, and the granular grains in the mesh hopper 3 will be discharged onto the scattering rack 113. Under the action of the scattering rack 113, the discharged granular grains can be further scattered, further avoiding the granular grains from sticking to each other, so that the hot air can pass through the gaps between the granular grains more fully, thereby further improving the drying quality and efficiency of the granular grains.

[0046] Embodiment 3: Based on embodiment 2, Figure 13-Figure 17 As shown, it also includes a guide mechanism, which is arranged on the two hollow cylinders 2 and the toggle shaft 102. The guide mechanism is used to guide the grain discharged from the mesh hopper 3. The guide mechanism includes a short shaft 121, a guide plate 122, a swing gear 123, a three-bracket 124, a toothless inner gear ring 125 and a toothless outer gear ring 126. The two hollow cylinders 2 are each provided with a short shaft 121 on one side close to each other through a bearing. A guide plate for guiding the grain is installed between the two short shafts 121. 122, the guide plate 122 is located at the discharge port of the mesh hopper 3, and a pendulum gear 123 is installed at one end of the two short shafts 121 away from each other in a key connection manner, and two three-brackets 124 are installed on the toggle shaft 102. The two three-brackets 124 are respectively located in the two hollow cylinders 2, and each of the three-brackets 124 is respectively installed with a toothless inner gear ring 125 and a toothless outer gear ring 126, and the pendulum gear 123 on the same side is located between the toothless inner gear ring 125 and the toothless outer gear ring 126 on the same side.

[0047] Several groups of driving teeth are evenly spaced on the toothless inner gear ring 125 and the toothless outer gear ring 126 , each group of driving teeth is composed of three tooth blocks, and the several groups of driving teeth on the toothless inner gear ring 125 and the several groups of driving teeth on the toothless outer gear ring 126 are staggered.

[0048] When the toggle shaft 102 rotates, the two three brackets 124 are driven to rotate, and the three brackets 124 drive the missing tooth inner ring gear 125 and the missing tooth outer ring gear 126 to rotate, and the several groups of driving teeth on the missing tooth inner ring gear 125 and the several groups of driving teeth on the missing tooth outer ring gear 126 are meshed with the pendulum gear 123 in sequence. When the driving teeth on the missing tooth inner ring gear 125 are meshed with the pendulum gear 123, the pendulum gear 123 will rotate, and when the driving teeth on the missing tooth outer ring gear 126 are meshed with the pendulum gear 123, the pendulum gear 123 will rotate in the opposite direction. As the several groups of driving teeth on the missing tooth inner ring gear 125 are meshed with the missing teeth Several groups of driving teeth on the outer gear ring 126 mesh with the pendulum gear 123 in turn, and the two pendulum gears 123 will rotate back and forth, and the two pendulum gears 123 will drive the two short shafts 121 to rotate back and forth continuously, and the two short shafts 121 drive the guide plate 122 to swing back and forth continuously, and the guide plate 122 can guide the granular grain discharged from the mesh hopper 3, so that the granular grain can be discharged more evenly onto the scattering grid 113, and then the granular grain can be scattered more fully, thereby further improving the drying quality and efficiency of the granular grain.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An air source heat pump drying device for rapid dehumidification of grain, characterized in that: The invention comprises a base frame (1), a hollow cylinder (2), a mesh hopper (3), an outer cylinder (4), a cover plate (5), an air inlet pipe (6), an air extraction pipe (7), a driving mechanism and a feeding mechanism. Two hollow cylinders (2) are fixedly mounted on the base frame (1). The sides of the two hollow cylinders (2) close to each other are sealed, and the sides of the two hollow cylinders (2) away from each other are open. A mesh hopper (3) is mounted between the two hollow cylinders (2). An outer cylinder (4) is rotatably mounted between the two hollow cylinders (2). The upper part of the mesh hopper (3) is open. A discharge port is provided at the bottom of the outer cylinder (3); the mesh hopper (3) is located inside the outer cylinder (4); a cover plate (5) is detachably mounted on the outer cylinder (4); an air inlet pipe (6) and an air exhaust pipe (7) are respectively mounted on the sides of the two hollow cylinders (2) close to each other; the two air inlet pipes (6) are located below the two air exhaust pipes (7); a driving mechanism is provided on the bottom frame (1) and the outer cylinder (4); the driving mechanism is used to drive the outer cylinder (4) to rotate; a feeding mechanism is provided on the bottom frame (1) and the outer cylinder (4); the feeding mechanism is used to transport grain into the mesh hopper (3).

2. The air source heat pump drying device for rapid dehumidification of grain according to claim 1, characterized in that: The driving mechanism comprises a bidirectional servo motor (81), a rotating shaft (82), a column gear (83) and a driving outer gear ring (84); a bidirectional servo motor (81) is mounted on one side of the base frame (1); a rotating shaft (82) is mounted on each of the two output shafts of the bidirectional servo motor (81); a column gear (83) is mounted on each of the two rotating shafts (82); two driving outer gear rings (84) are mounted on the curved surface of the outer cylinder (4); and the two column gears (83) are respectively meshed with the two driving outer gear rings (84).

3. The air source heat pump drying device for rapid dehumidification of grain according to claim 2, characterized in that: The material feeding mechanism comprises a transverse shaft (91), a material receiving plate (92), a torsion spring (93), a hexagonal prism (94), an outer ring (95) and an inner ring (96). Six transverse shafts (91) are evenly spaced and rotatably arranged on the outer cylinder (4). A material receiving plate (92) is fixedly mounted in the middle of each transverse shaft (91). The six material receiving plates (92) are all located in the outer cylinder (4). A torsion spring (93) is respectively connected between the two ends of each transverse shaft (91) and the two sides of the outer cylinder (4). A hexagonal prism (94) is fixedly mounted at the two ends of each transverse shaft (91). An outer ring (95) and an inner ring (96) are respectively mounted on both sides of the base frame (1). A limiting groove is formed between the outer ring (95) and the inner ring (96) on the same side. The hexagonal prism (94) on the same side is located in the limiting groove formed between the outer ring (95) and the inner ring (96) on the same side.

4. The air source heat pump drying device for rapid dehumidification of grains as claimed in claim 3, characterized in that: The invention also comprises a toggle mechanism, which is arranged on the two hollow cylinders (2) and the two rotating shafts (82). The toggle mechanism is used to toggle the grain accumulated in the mesh hopper (3). The toggle mechanism comprises a fixed plate (101), a toggle shaft (102), a toggle frame (103) and a transmission assembly (104). A fixed plate (101) is installed in each of the two hollow cylinders (2). A toggle shaft (102) is rotatably arranged between the two fixed plates (101). The toggle shaft (102) rotatably passes through the two hollow cylinders (2). A plurality of toggle frames (103) are fixedly connected in the toggle shaft (102). Two transmission assemblies (104) are connected between ends of the two rotating shafts (82) that are away from each other and two ends of the toggle shaft (102).

5. The air source heat pump drying device for rapid moisture removal of grains as claimed in claim 4, characterized in that: The transmission assembly (104) is composed of two pulleys and a flat belt. The two pulleys are respectively mounted on the rotating shaft (82) and the shifting shaft (102), and the flat belt is wound between the two pulleys.

6. The air source heat pump drying device for rapid moisture removal of grains as claimed in claim 5, characterized in that: The invention also comprises a dispersing mechanism, which is arranged on the two hollow cylinders (2) and the toggle shaft (102), and is used to disperse the grain being dried. The dispersing mechanism comprises a sliding frame (111), a return spring (112), a dispersing net frame (113), a roller (114) and a cam (115). The two hollow cylinders (2) are each provided with a sliding frame (111) in a sliding manner, and two return springs (112) are connected between the sliding frame (111) and the hollow cylinder (2). The two sliding frames (111) The two sliding frames (111) are symmetrically arranged, with a scattering grid frame (113) installed between the two sliding frames (111). The scattering grid frame (113) is located directly below the discharge port of the mesh hopper (3). A roller (114) is rotatably provided on the upper part of the two sliding frames (111). Two cams (115) are fixedly installed on the toggle shaft (102). The two cams (115) are respectively located in the two hollow cylinders (2). Each cam (115) is provided with four protrusions. The cam (115) is in contact with the roller (114).

7. The air source heat pump drying device for rapid moisture removal of grains according to claim 6, characterized in that: The mesh holes on the scattering grid (113) are larger than the mesh holes on the mesh hopper (3), and the scattering grid (113) is located directly below the discharge port of the mesh hopper (3).

8. The air source heat pump drying device for rapid moisture removal of grains as claimed in claim 7, characterized in that: The invention also comprises a guide mechanism, which is arranged on the two hollow cylinders (2) and the toggle shaft (102), and is used to guide the grain discharged from the mesh hopper (3). The guide mechanism comprises a short shaft (121), a guide plate (122), a swing gear (123), three brackets (124), a toothless inner gear ring (125), and a toothless outer gear ring (126). A short shaft (121) is rotatably arranged on one side of the two hollow cylinders (2) close to each other, and a guide plate (122) is installed between the two short shafts (121). The plate (122) is located at the discharge port of the mesh hopper (3), and a pendulum gear (123) is installed at the ends of the two short shafts (121) that are away from each other. Two three-brackets (124) are installed on the toggle shaft (102), and the two three-brackets (124) are respectively located in the two hollow cylinders (2). Each of the three-brackets (124) is respectively installed with a toothless inner gear ring (125) and a toothless outer gear ring (126), and the pendulum gear (123) on the same side is located between the toothless inner gear ring (125) and the toothless outer gear ring (126) on the same side.

9. The air source heat pump drying device for rapid moisture removal of grains as claimed in claim 8, characterized in that: A plurality of groups of driving teeth are evenly spaced on the toothless inner gear ring (125) and the toothless outer gear ring (126), each group of driving teeth is composed of three tooth blocks, and the plurality of groups of driving teeth on the toothless inner gear ring (125) and the plurality of groups of driving teeth on the toothless outer gear ring (126) are arranged in a staggered manner.

Images