A medicinal material seed winnowing device

Abstract

The present invention relates to the technical field of screening devices, and specifically discloses a medicinal material seed air selection device, comprising a screen cylinder and a driving frame for controlling the screen cylinder to rotate counterclockwise around its axis, a spiral blade is fixedly installed in the screen cylinder, a plurality of mounting holes are provided on the screen cylinder, a plurality of lifting assemblies corresponding to the mounting holes are hinged in the screen cylinder, the lifting assemblies comprise a rotating plate for covering the mounting holes, the rotating plate is hinged in the screen cylinder, screen holes are provided on the rotating plate, one clockwise end of the rotating plate protrudes into the screen cylinder to form a material blocking edge, when the screen cylinder is used to screen small particle impurities, the lifting assemblies are moved to the top with the seeds, the shifting assembly pushes the lifting assemblies to make the seeds in the lifting assemblies fall, and then the airflow blown out by the blowing assembly intersects with the seeds, so that the impurities in the seeds are blown to the mounting holes on the left, and this cycle is repeated until they are discharged from the screen cylinder through the spiral blades.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, and in particular to a medicinal material seed air selection device. Background Art

[0002] Air separation is a method of removing impurities with the help of wind by utilizing the difference in suspension speed between materials and impurities. The purpose of air separation is to remove light impurities and dust, while also removing some heavier impurities such as stones and clods of earth. This method is often used for seed cleaning and dust removal and foreign matter removal in industries such as grain and tobacco. Air separation, also known as airflow sorting, is based on the principle that when solid waste particles are acted upon by air flow, those with high density have a high final settling velocity and a relatively short movement distance, while those with low density have a low final settling velocity and a relatively long movement distance. This method is suitable for the sorting of solid waste particles with similar shapes and sizes.

[0003] A Chinese patent document with authorization announcement number CN112517405B discloses a multi-stage tomato seed air separator with a vibration screening function, including a casing, support columns are arranged at the corners of the lower end of the casing, a top plate is arranged at the upper end of the casing, a movable opening plate is arranged at the upper end of the top plate, the movable opening plate and one end of the top plate are matched and connected by a connecting shaft, an air separation box is arranged at one end of the casing close to the partition, a screening grid is arranged above the air separation box, and one end of the screening grid is inserted through the opening of the casing, a screening device is arranged at one end of the screening grid and at the end of the support plate away from the air separation box, a dust collecting bag is arranged at the end of the air separation box away from the screening fan, a discharge pipe inserted into the casing is arranged in the middle of the lower end of the air separation cylinder, and a waste box is arranged at one end of the casing.

[0004] When the existing seed air separation device is in use, since the seeds have a certain thickness when they fall, some impurities are easily blocked by the seeds and cannot be separated by the airflow, resulting in low purity. Summary of the invention

[0005] The present invention provides a medicinal seed air separation device, aiming to solve the problem in the related art that some impurities are easily blocked by seeds and cannot be separated by airflow, resulting in low purity.

[0006] A medicinal seed air selection device comprises a screen drum and a driving frame for controlling the screen drum to rotate counterclockwise around its axis, a spiral blade is fixedly installed in the screen drum, a plurality of mounting holes are provided on the screen drum, a plurality of material lifting assemblies corresponding to the mounting holes are hinged in the screen drum, the material lifting assembly comprises a rotating plate for covering the mounting holes, the rotating plate is hinged in the screen drum, screen holes are provided on the rotating plate, one clockwise end of the rotating plate protrudes into the screen drum to form a material retaining edge, an inner retaining plate is slidably connected to the material retaining edge, and an abutment pin is elastically installed on the inner retaining plate The screen cylinder is provided with a toggle assembly, a blowing assembly and a reset assembly. When the lifting assembly moves to the top end, the toggle assembly contacts the abutment pin shaft, so that the inner baffle moves clockwise relative to the rotating plate until it is fully opened, and the abutment pin shaft contracts to reset the inner baffle. In this process, the airflow generated by the blowing assembly selects the fallen seeds and blows impurities into the mounting hole at the left end. When the lifting assembly moves to the lower left, the reset assembly causes the lifting assembly to rotate counterclockwise, so that the lifting assembly covers the mounting hole again.

[0007] The effect is: when the driving frame drives the screen drum to rotate, small particles of impurities in the seeds (such as mud and seed debris) are discharged through the screen drum, and when the lifting assembly moves to the top, the prying assembly pushes the lifting assembly to make the seeds in the lifting assembly fall, and then the airflow blown out by the blowing assembly intersects with the seeds. Because the lifting assembly on the left is deflected clockwise relative to the mounting hole under the action of gravity, the mounting hole on the left is opened, so that the impurities in the seeds are blown to the mounting hole on the left. When the lifting assembly passes the reset assembly at the lower left, the lifting assembly is reset to cover the mounting hole again.

[0008] Preferably, the abutment pin is elastically hinged on the inner baffle plate. In the initial state, one end of the abutment pin abuts against the material stop edge and can slide along the material stop edge, and the other end can abut against the toggle assembly. When the inner baffle plate is fully opened relative to the rotating plate, the abutment pin no longer abuts against the material stop edge.

[0009] Preferably, one end of the abutment pin abutting against the material stop edge is provided with a ball in contact with the material stop edge, so as to reduce the friction force of relative sliding between the two.

[0010] Preferably, the toggle assembly includes a square rod installed on the top of the screen drum, the front and rear ends of the square rod are connected to the drive frame, the distance between the square rod and the wall of the screen drum is greater than the thickness of the lifting assembly, and a limit rod is fixedly installed on the right side of the square rod to abut against the inner side of the inner baffle, so that the square rod can clamp the abutment pin until the abutment pin rotates and the lifting assembly passes through the gap between the square rod and the wall of the screen drum.

[0011] Preferably, an angled plate is provided at one end of the inner baffle away from the hinge between the rotating plate and the screen drum, and the tip of the angled plate extends to the inner side surface of the inner baffle. The reset assembly includes a fixed rod that can abut against the angled plate, and the front and rear ends of the fixed rod are connected to the drive frame. When the angled plate abuts against the fixed rod, the angled plate flips upward, thereby causing the lifting assembly to flip upward.

[0012] Preferably, the blowing assembly includes a ventilation duct parallel to the square rod and located below the square rod, both ends of the ventilation duct are connected to the driving frame, one end of which is connected to the air pump assembly, and a blowing nozzle facing left is installed on the ventilation duct.

[0013] Preferably, a collecting cylinder is provided on the outside of the sieve cylinder, a ventilation mesh plate is installed on the left end of the collecting cylinder, and the air flow blown out by the blowing assembly passes through the mounting holes and the ventilation mesh plate in sequence, thereby bringing the impurities into the collecting cylinder.

[0014] Preferably, at least two buffer plates inclined downward and arranged alternately with each other are installed at the bottom of the square rod, and a bending channel for seeds to pass through is formed between the two buffer plates.

[0015] By adopting the above technical solution, the beneficial effects of the present invention are:

[0016] When screening small particles of impurities through the sieve cylinder, the lifting component moves the seeds to the top, the toggle component pushes the lifting component to make the seeds in the lifting component fall, and then the airflow blown out by the blowing component intersects with the seeds. Since the left lifting component deflects clockwise relative to the mounting hole under the action of gravity, the left mounting hole opens, so that the impurities in the seeds are blown to the left mounting hole, and this cycle is repeated until they are discharged from the sieve cylinder through the spiral blades. This arrangement can improve the purity of the seeds after screening. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic diagram of the structure of the screen drum in the present invention.

[0019] Figure 3 It is a cross-sectional view of the screen drum in the present invention.

[0020] Figure 4 It is a cross-sectional view from another perspective of the screen drum in the present invention.

[0021] Figure 5 It is a schematic diagram of the present invention when screening seeds.

[0022] Figure 6 It is a structural schematic diagram of the material lifting component in the present invention.

[0023] Figure 7It is a schematic diagram of the disassembled structure of the material lifting component in the present invention.

[0024] Reference numerals:

[0025] 1. Driving frame; 2. Collecting cylinder; 21. Ventilation mesh plate; 3. Screen cylinder; 4. Spiral blade; 5. Lifting assembly; 51. Rotating plate; 511. Material stop edge; 52. Inner baffle plate; 521. Bevel plate; 53. Abutment pin; 54. Elastic member; 6. Toggle assembly; 61. Square rod; 611. Buffer plate; 62. Limit rod; 7. Blowing assembly; 8. Reset assembly. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] like Figures 1 - 3 As shown, a medicinal seed air selection device comprises a driving frame 1, a collecting cylinder 2, a screen cylinder 3, a spiral blade 4, a plurality of lifting components 5, a toggle component 6, a blowing component 7 and a reset component 8. Screen holes (not shown in the figure) are evenly arranged on the screen cylinder 3. The screen cylinder 3 is rotatably mounted on the driving frame 1. The collecting cylinder 2 is sleeved on the outside of the screen cylinder 3, and a ventilation mesh plate 21 for intercepting impurities is installed on the left end of the collecting cylinder 2. The spiral blade 4 is fixedly mounted in the screen cylinder 3. A plurality of mounting holes are opened on the screen cylinder 3 along the direction of the spiral blade 4. The lifting components 5 correspond to the mounting holes one by one. One counterclockwise end of the lifting component 5 is hinged to one counterclockwise end of the mounting hole, so that the lifting component 5 can cover the mounting hole. When the driving frame 1 drives the screen cylinder 3 to rotate, small particles of impurities (such as The impurities in the seeds are blown into the left mounting hole, and then the impurities reach the ventilation mesh plate 21 of the collecting cylinder 2. Since the mounting hole rotates, the position where the airflow passes through the ventilation mesh plate 21 changes. When a part of the ventilation mesh plate 21 does not pass the airflow, the impurities attached thereto fall to the bottom of the collecting cylinder 2. After the lifting assembly 5 passes the resetting assembly 8 at the lower left, the lifting assembly 5 is reset to block the mounting hole again.

[0028] like Figure 6 and Figure 7As shown, the material lifting assembly 5 includes a rotating plate 51, an inner baffle plate 52, an abutting pin 53 and an elastic member 54. The rotating plate 51 is hinged at one end of the mounting hole in the counterclockwise direction. The rotating plate 51 is arc-shaped and its size is slightly larger than that of the mounting hole. A sieve hole (not shown in the figure) is provided on the rotating plate 51. One end of the rotating plate 51 in the clockwise direction protrudes into the screen drum 3 to form a material retaining edge 511. Both the front and rear sides of the rotating plate 51 are clearance-matched with the spiral blade 4. The material retaining edge 511 is slidably connected with the inner baffle plate 52. An elastic member 54 (preferably a spring) is connected between the inner baffle plate 52 and the rotating plate 51. A material containing cavity with an open end is formed between the rotating plate 51, the material retaining edge 511 and the inner baffle plate 52.

[0029] A slide rail is fixedly connected to the material retaining edge 511, and a sliding block compatible with the slide rail is provided on the outer side of the inner baffle plate 52, so that the two are slidably connected, and the abutment pin 53 is elastically hinged on the inner baffle plate 52 (for example, hinged on the inner baffle plate 52 through a torsion spring and a rotating shaft), and the end of the abutment pin 53 that abuts against the slide rail is provided with a ball in contact with the slide rail. In the initial state, one end of the abutment pin 53 abuts against the slide rail and can slide along the slide rail, and the other end can abut against the toggle assembly 6. When the inner baffle plate 52 is fully opened relative to the rotating plate 51, the abutment pin 53 no longer abuts against the material retaining edge 511, so that the inner baffle plate 52 is reset under the action of the elastic member 54.

[0030] like Figures 3 - 5 As shown, the toggle assembly 6 includes a square rod 61 and a limit rod 62. The front and rear ends of the square rod 61 are connected to the driving frame 1. The limit rod 62 is arc-shaped and the top end is fixedly connected to the right side of the square rod 61. Both ends of the limit rod 62 are inclined toward the middle of the screen drum 3. When the lifting assembly 5 moves to the right, the limit rod 62 abuts against the inner baffle 52, thereby preventing the lifting assembly 5 from rotating relative to the screen drum 3. When the lifting assembly 5 moves to the upper side, the square rod 61 abuts against the abutment pin 53, thereby causing the inner baffle 52 to slide relative to the rotating plate 51, thereby causing the material in the material chamber to gradually fall.

[0031] The blowing assembly 7 includes a ventilation duct parallel to the square rod 61 and located below the square rod 61. Both ends of the ventilation duct are connected to the driving frame 1, one end of which is connected to an air pump assembly (not shown in the figure). A blowing nozzle facing the left is installed on the ventilation duct. After the material in the material chamber falls to the position of the blowing nozzle, the airflow separates the light impurities in the seeds from the seeds, and the light impurities are blown into the mounting hole opened on the left.

[0032] like Figures 5 - 7As shown, an angled plate 521 is provided at one end of the inner baffle plate 52 away from the hinge between the rotating plate 51 and the screen drum 3, and the tip of the angled plate 521 extends to the inner side surface of the inner baffle plate 52, and the reset assembly 8 includes a fixed rod that can abut against the angled plate 521, and the front and rear ends of the fixed rod are connected to the driving frame 1. When the lifting assembly 5 passes through the lower left, the angled plate 521 abuts against the fixed rod, thereby causing the lifting assembly 5 to rotate counterclockwise and reset, and then the lifting assembly 5 passes through the bottom of the fixed rod to receive the seeds falling from above again.

[0033] In order to reduce the speed of the seeds when passing through the blowing nozzle, at least two buffer plates 611 are installed at the bottom of the square rod 61, which are inclined downward and staggered with each other. A bending channel for the seeds to pass through is formed between the two buffer plates 611, so that the seeds decelerated by passing through the bending channel converge with the airflow, so that impurities in the seeds are separated from the seeds.

[0034] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A medicinal seed wind selection device, comprising a screen drum and a driving frame for controlling the screen drum to rotate counterclockwise around its axis, wherein a spiral blade is fixedly installed in the screen drum, characterized in that: The sieve drum is provided with a plurality of mounting holes, and the sieve drum is hinged with a plurality of lifting assemblies corresponding to the mounting holes, and the lifting assembly comprises a rotating plate for covering the mounting holes, the rotating plate is hinged in the sieve drum, and the sieve holes are provided on the rotating plate, and one end of the rotating plate is protruding into the sieve drum in a clockwise direction to form a blocking edge, and an inner baffle is slidably connected to the blocking edge, and an abutment pin is elastically installed on the inner baffle, and an elastic member is connected between the inner baffle and the rotating plate. A toggle assembly, a blowing assembly and a reset assembly are arranged in the sieve drum. When the lifting assembly moves to the top end, the toggle assembly contacts the abutment pin, so that the inner baffle moves clockwise relative to the rotating plate until it is fully opened, and the abutment pin contracts to reset the inner baffle. In this process, the airflow generated by the blowing assembly selects the fallen seeds, and impurities are blown into the mounting holes at the left end. When the lifting assembly moves to the lower left, the reset assembly causes the lifting assembly to rotate counterclockwise, so that the lifting assembly blocks the mounting holes again.

2. The medicinal material seed winnowing device according to claim 1, characterized in that: The abutment pin is elastically hinged on the inner baffle plate. In the initial state, one end of the abutment pin abuts against the material stop edge and can slide along the material stop edge, and the other end can abut against the toggle assembly. When the inner baffle plate is fully opened relative to the rotating plate, the abutment pin no longer abuts against the material stop edge.

3. The medicinal material seed winnowing device according to claim 1, characterized in that: One end of the abutting pin abutting against the material stop edge is provided with a ball in contact with the material stop edge.

4. The medicinal material seed winnowing device according to claim 3, characterized in that: The toggle assembly includes a square rod installed on the top of the screen drum, the front and rear ends of the square rod are connected to the drive frame, the distance between the square rod and the wall of the screen drum is greater than the thickness of the lifting assembly, and a limit rod is fixedly installed on the right side of the square rod to abut against the inner side of the inner baffle.

5. The medicinal material seed winnowing device according to claim 1, characterized in that: An angled plate is provided at one end of the inner baffle away from the hinge between the rotating plate and the screen drum, and the tip of the angled plate extends to the inner side of the inner baffle. The reset assembly includes a fixing rod that can abut against the angled plate, and the front and rear ends of the fixing rod are connected to the drive frame.

6. The medicinal material seed winnowing device according to claim 4, characterized in that: The blowing assembly comprises a ventilation duct which is parallel to the square rod and located below the square rod. Both ends of the ventilation duct are connected to the driving frame, one end of which is connected to the air pump assembly. A blowing nozzle facing left is installed on the ventilation duct.

7. The medicinal material seed winnowing device according to claim 1, characterized in that: A collecting cylinder is arranged on the outer side of the sieve cylinder, and a ventilation mesh plate is installed on the left end of the collecting cylinder.

8. The medicinal material seed winnowing device according to claim 4, characterized in that: At least two buffer plates inclined downward and arranged alternately with each other are installed at the bottom of the square rod, and a bending channel for seeds to pass through is formed between the two buffer plates.

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