Radix paeoniae alba grading method and device

Abstract

The application discloses a kind of radix pseudoginseng grading methods and devices, applied to radix pseudoginseng grading technical field, including rack, feeding structure, feeding structure includes outlet, for feeding radix pseudoginseng needing to be graded.The rectifier structure is communicated with the outlet of feeding structure, in the direction away from feeding structure.The first sieve layer, one side of the first sieve layer is connected with the first collection groove, and the first sieve layer includes the first screening structure, which screens single-layer radix pseudoginseng.The second sieve layer, one side of the second sieve layer is connected with the second collection groove, and the second sieve layer is provided with the third collection groove away from the side of the first sieve layer, and the second sieve layer includes the second screening structure, which screens radix pseudoginseng passing through the first screening structure.The drive structure is fixed on the rack, connected with the first sieve layer and the second sieve layer, and provides vibration screening power for the first sieve layer and the second sieve layer.The technical problems of low grading efficiency and low grading accuracy in the prior art radix pseudoginseng grading method are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radix pseudostellariae grading, and particularly relates to a radix pseudostellariae grading method and device. BACKGROUND

[0002] Radix pseudostellariae is a Chinese medicinal material with a wide planting range, and the value of radix pseudostellariae is mainly classified by thickness, and the thicker the radix pseudostellariae is, the higher the value is. However, in the prior art, the radix pseudostellariae is mainly graded manually, and the manual grading has low grading efficiency and high subjectivity, resulting in low accuracy of radix pseudostellariae grading.

[0003] Therefore, in the prior art, the radix pseudostellariae grading method has the technical problems of low grading efficiency and low grading accuracy. SUMMARY

[0004] The radix pseudostellariae grading method and device solve the technical problems of low grading efficiency and low grading accuracy of the radix pseudostellariae grading method in the prior art.

[0005] In order to solve the above problems, the present application provides a radix pseudostellariae grading method and device, which comprises a rack, a feeding structure, the feeding structure comprising an outlet for feeding radix pseudostellariae to be graded, a rectifying structure in communication with the outlet of the feeding structure, the rectifying structure comprising a short runner plate and a long runner plate connected in the direction away from the feeding structure for guiding the fed radix pseudostellariae to form multiple columns of single-layer radix pseudostellariae, a first sieve layer, one side of the first sieve layer being connected to a first collection groove, the first sieve layer comprising a first screening structure for screening the single-layer radix pseudostellariae, the radix pseudostellariae not meeting the first standard being collected into the first collection groove, and the radix pseudostellariae meeting the first standard passing through the first screening structure, a second sieve layer, one side of the second sieve layer being connected to a second collection groove, and the second sieve layer being provided with a third collection groove on the side away from the first sieve layer, the second sieve layer comprising a second screening structure for screening the radix pseudostellariae passing through the first screening structure, the radix pseudostellariae not meeting the second standard being collected into the second collection groove, and the radix pseudostellariae meeting the second standard passing through the second screening structure into the third collection groove, and a driving structure fixed to the rack, connected to the first sieve layer and the second sieve layer, and providing vibration screening power for the first sieve layer and the second sieve layer, wherein the size requirement of the radix pseudostellariae in the second standard is smaller than the size requirement of the radix pseudostellariae in the first standard.

[0006] Preferably, the feeding structure comprises a feeding hopper, the feeding hopper comprising an open cavity, the cross-sectional area of the cavity gradually decreasing in the direction approaching the rectifying structure and forming the outlet, and the feeding hopper having a first inclination angle.

[0007] A feeding wing is arranged above the outlet of the feeding hopper to prevent the crown of the radix pseudoginseng and push the radix pseudoginseng in the feeding hopper into the outlet evenly.

[0008] Preferably, the rectifying structure comprises:

[0009] A short runner plate, the inlet of which is communicated with the outlet of the feeding structure, has an inclination for receiving and rectifying the radix pseudoginseng fed from the outlet and forming a single layer of the radix pseudoginseng;

[0010] A long runner plate, the inlet of which is communicated with the outlet of the short runner plate, has an inclination for receiving and distributing the radix pseudoginseng flowed from the short runner plate and forming multiple columns of the single layer of the radix pseudoginseng;

[0011] A cover plate is arranged on the side of the long runner plate close to the short runner plate, is hingedly fixed to the inlet of the long runner plate through a cover plate hinge shaft and forms a cavity with the long runner plate for guiding the radix pseudoginseng to form a single layer of the radix pseudoginseng.

[0012] Preferably, the angle between the short runner plate and the horizontal plane and the angle between the long runner plate and the horizontal plane are both 40 degrees, and a plurality of convex blocks are arranged on the side of the short runner plate close to the feeding structure for rectifying the radix pseudoginseng and forming a single layer of the radix pseudoginseng;

[0013] A plurality of parallel A-type guide bars and B-type guide bars are arranged alternately on the side of the long runner plate close to the short runner plate, the length of the A-type guide bar is greater than that of the B-type guide bar, and the ends of the plurality of A-type guide bars and the plurality of B-type guide bars close to the outlet of the long runner plate are aligned, and the distance between adjacent A-type guide bars and B-type guide bars is 40 mm for distributing the radix pseudoginseng.

[0014] Preferably, the first screening structure comprises:

[0015] A first fixed frame;

[0016] A plurality of first screen bars, the two ends of which are fixed to the first fixed frame, the cross section of each first screen bar is triangular, and a first screen filter hole with an inverted trapezoidal cross section is formed between adjacent two first screen bars, the minimum gap in the first screen filter hole is 5 mm to form the first standard;

[0017] Two first guide pieces are fixed to the first fixed frame and are arranged non-perpendicularly to the plurality of first screen bars.

[0018] Preferably, the second screening structure comprises:

[0019] A second fixed frame;

[0020] A plurality of second screen bars are fixed at both ends of the second fixed frame, each second screen bar has a triangular cross section, and a second screen filter hole with an inverted trapezoidal cross section is formed between two adjacent second screen bars, the minimum gap in the second screen filter hole is 3mm, forming the second standard;

[0021] Two second guide pieces are fixed on the second fixed frame and are arranged non-perpendicularly to the plurality of second screen bars.

[0022] Preferably, both ends of the first screen layer and the second screen layer are fixed to the rack by short hangers and long hangers, a plurality of spaced connection holes are arranged on the short hangers and the long hangers, and the first screen layer and the second screen layer are fixed by selecting different connection holes to change the included angle of the first screen layer and the second screen layer with the horizontal plane.

[0023] Preferably, the driving structure includes a first driving assembly and a second driving assembly, which respectively drive the first screen layer and the second screen layer to reciprocatingly vibrate and screen, and the difference between the phase angles of the first screen layer and the second screen layer is 180 degrees.

[0024] A method and device for grading Pseudostellaria heterophylla are provided, which include a rack, a feeding structure including an outlet for feeding Pseudostellaria heterophylla to be graded, a rectifying structure in communication with the outlet of the feeding structure, the rectifying structure including connected short and long guide plates in a direction away from the feeding structure for guiding the fed Pseudostellaria heterophylla to form a single layer of multiple columns of Pseudostellaria heterophylla, a first screen layer having one side connected to a first collection groove, the first screen layer including a first screening structure for screening the single layer of Pseudostellaria heterophylla, collecting Pseudostellaria heterophylla not meeting a first standard into the first collection groove, and allowing Pseudostellaria heterophylla meeting the first standard to pass through the first screening structure, a second screen layer having one side connected to a second collection groove and the other side away from the first screen layer connected to a third collection groove, the second screen layer including a second screening structure for screening the Pseudostellaria heterophylla passing through the first screening structure, collecting Pseudostellaria heterophylla not meeting a second standard into the second collection groove, and allowing Pseudostellaria heterophylla meeting the second standard to pass through the second screening structure into the third collection groove, and a driving structure fixed to the rack, connected to the first screen layer and the second screen layer, and providing vibration screening power for the first screen layer and the second screen layer, wherein the size requirement of Pseudostellaria heterophylla in the second standard is smaller than the size requirement of Pseudostellaria heterophylla in the first standard. The method and device realize accurate grading and screening of Pseudostellaria heterophylla, have a simple structure and are convenient to maintain, and further improve the efficiency of grading and screening. The method and device solve the technical problems of low grading efficiency and low grading accuracy of Pseudostellaria heterophylla in the prior art.

[0025] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood, and to be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments of the present disclosure will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present disclosure, not limit the present disclosure.

[0027] Figure 1 A side view of a radix paeoniae radix grading device provided by the embodiments of the present application;

[0028] Figure 2 An axial side view of a radix paeoniae radix grading device provided by the embodiments of the present application;

[0029] Figure 3 A schematic view of a rectification structure of a radix paeoniae radix grading device provided by the embodiments of the present application;

[0030] Figure 4 A schematic view of a short runner plate surface of a radix paeoniae radix grading device provided by the embodiments of the present application;

[0031] Figure 5 A schematic view of a long runner plate surface of a radix paeoniae radix grading device provided by the embodiments of the present application;

[0032] Figure 6 A schematic view of the specific structure of a screen layer in a first screen layer of a radix paeoniae radix grading device provided by the embodiments of the present application;

[0033] Figure 7 A schematic view of the structure of a boom of a radix paeoniae radix grading device provided by the embodiments of the present application.

[0034] Explanation of reference numerals: first motor 1, first eccentric wheel 2, second pulley 3, first transmission rod 4, feeding hopper 5, second motor 6, upper short boom 7, rack 8, feeding wing 9, first screen layer 10, first screen frame 11, second collecting groove 12, third collecting groove 13, first collecting groove 14, second transmission rod 15, second eccentric wheel 16, first pulley 17, rectification structure 18, upper layer baffle 19, lower layer baffle 20, lower short boom 21, second screen layer 22, second screen frame 23, shaft 24, first connecting hole 25, second connecting hole 26, third connecting hole 27, fixing hole 28, cover plate 181, fixing frame 182, long runner plate 183, short runner plate 184, guide strip 185, convex block 186, hinged shaft 187, first fixing frame 101, first guide piece 102, first screen strip 103. DETAILED DESCRIPTION

[0035] Embodiment one

[0036] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be described in further detail below with reference to the drawings, and the described embodiments should not be regarded as limiting the present application. All other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0037] With reference to Figure 1 、 Figure 2 The embodiment of the present application provides a radix paeoniae radix grading device, which comprises:

[0038] A rack 8 is used for mounting and fixing various structural components of the radix paeoniae radix grading device.

[0039] A feeding structure comprises an inlet and an outlet, and is used for feeding radix paeoniae radix to be graded.

[0040] A rectifying structure 18 is in communication with the outlet of the feeding structure, and comprises connected short and long flow plates 184 and 183 in a direction away from the feeding structure 9, and is used for guiding the flow of the fed radix paeoniae radix to form multiple columns of single-layer radix paeoniae radix.

[0041] A first sieve layer 10 is connected to a first collecting groove 14 on one side, and comprises a first screening structure, which is used for screening the single-layer radix paeoniae radix, collecting radix paeoniae radix not meeting a first standard into the first collecting groove 14, and allowing radix paeoniae radix meeting the first standard to pass through the first screening structure.

[0042] A second sieve layer 22 is connected to a second collecting groove 12 on one side, and is provided with a third collecting groove 13 on a side away from the first sieve layer 10, and comprises a second screening structure in the second sieve layer 22, which is used for screening the radix paeoniae radix passing through the first screening structure, collecting radix paeoniae radix not meeting a second standard into the second collecting groove 12, and allowing radix paeoniae radix meeting the second standard to pass through the second screening structure into the third collecting groove 13.

[0043] A driving structure is fixed to the rack 8, is connected to the first sieve layer 10 and the second sieve layer 22, and provides vibration screening power for the first sieve layer 10 and the second sieve layer 22.

[0044] The size requirement of radix paeoniae radix in the second standard is smaller than the size requirement of radix paeoniae radix in the first standard.

[0045] The feeding structure comprises:

[0046] A feeding hopper 5, which comprises an open cavity, the upper part of which forms the inlet of the feeding structure, the cross-sectional area of the cavity gradually decreases in the direction approaching the rectifying structure 18 and forms the outlet, the feeding hopper has a first inclination angle, for example, 60° with the horizontal plane;

[0047] A feeding wing 9, which is arranged above the outlet of the feeding hopper and is driven to rotate by the second motor 6, so as to prevent the arching of the radix ginseng and uniformly push the radix ginseng in the feeding hopper into the outlet, avoiding the blockage of the outlet of the feeding hopper.

[0048] Reference Figure 3 、 Figure 4 、 Figure 5 The rectifying structure 18 comprises:

[0049] A short runner plate 184, the inlet of which is communicated with the outlet of the feeding hopper 5, has an inclination, is used for receiving the radix ginseng fed from the inlet and rectifying and guiding the radix ginseng to form multiple rows of single-layer radix ginseng;

[0050] A long runner plate 183, the inlet of which is communicated with the outlet of the short runner plate 184, has an inclination, is used for receiving the radix ginseng flowing from the short runner plate 184 and rectifying and guiding the radix ginseng to form multiple rows of single-layer radix ginseng;

[0051] A cover plate 181, which is arranged on one side of the long runner plate 183 close to the short runner plate 184, is hingedly fixed to the inlet of the long runner plate 183 through a hinge shaft 187 and forms a cavity with the long runner plate 183 to guide the radix ginseng to form single-layer radix ginseng, wherein the short runner plate 184, the long runner plate 183 and the hinge shaft 187 are all fixed to a fixed frame 182.

[0052] The angle between the short runner plate 184 and the horizontal plane is 40°, and a plurality of convex blocks 186 are arranged on one side of the short runner plate 184 close to the feeding structure, which are used for rectifying and guiding the radix ginseng to form single-layer radix ginseng;

[0053] A plurality of parallel guide strips 185 are arranged on one side of the long runner plate 183 close to the short runner plate 184, the guide strips 185 have two types of A-type guide strips and B-type guide strips, the length of the A-type guide strips is greater than that of the B-type guide strips, and the ends of the plurality of A-type guide strips and the plurality of B-type guide strips close to the outlet of the long runner plate 183 are aligned, the distance between adjacent A-type guide strips and B-type guide strips is 40 mm, which are used for rectifying and guiding the radix ginseng,

[0054] The working principle of the short runner plate is that when the radix ginseng enters the short runner plate from the lower end of the inlet, the radix ginseng slides into the inlet of the long runner plate through the surface of the short runner plate as single-layer and uniform as possible under the action of the convex blocks.

[0055] The working principle of the long sliding plate is that when the radix paeoniae veitchii falls into the upper end entrance of the long sliding plate longitudinally, the radix paeoniae veitchii enters the chute longitudinally smoothly, when the radix paeoniae veitchii falls into the entrance of the long sliding plate transversely or obliquely, the radix paeoniae veitchii automatically realizes posture adjustment under the guidance of the long guide strip and the short guide strip and then enters the chute longitudinally, and then the radix paeoniae veitchii slides to the upper layer screen surface longitudinally in single layer under the action of the chute and the cover plate.

[0056] Reference Figure 6 The first screening structure comprises:

[0057] a first fixed frame 101;

[0058] a plurality of first screen strips 103, both ends of the plurality of first screen strips 103 being fixed on the first fixed frame 101, the cross section of each first screen strip 103 being triangular, a first screen filter hole with a cross section of an inverted trapezoid being formed between two adjacent first screen strips 103, the minimum gap in the first screen filter hole being 5 mm, the first standard being formed;

[0059] two first guide pieces 102, the two first guide pieces 102 being fixed on the first fixed frame 101 and being arranged non-perpendicularly with the plurality of first screen strips 103, and an upper layer baffle 19 being fixed on the first fixed frame 101 in parallel with the first screen strips 103, the upper layer baffle 19 being used for preventing the radix paeoniae veitchii from sliding.

[0060] The second screening structure is similar to the first screening structure, only the minimum gap in the screen filter hole being different, the second screening structure being used for realizing further fine screening of the radix paeoniae veitchii, and comprising:

[0061] a second fixed frame;

[0062] a plurality of second screen strips, both ends of the plurality of second screen strips being fixed on the second fixed frame, the cross section of each second screen strip being triangular, a second screen filter hole with a cross section of an inverted trapezoid being formed between two adjacent second screen strips, the minimum gap in the second screen filter hole being 3 mm, the second standard being formed;

[0063] two second guide pieces, the two second guide pieces being fixed on the second fixed frame and being arranged non-perpendicularly with the plurality of second screen strips, and a lower layer baffle 20 being fixed on the second fixed frame in parallel with the second screen strips, the lower layer baffle 20 being used for preventing the radix paeoniae veitchii from sliding.

[0064] Meanwhile, the first fixed frame 101 is fixed on the first screen frame 11 to form the first screen layer 10, and the second fixed frame is fixed on the second screen frame 11 to form the second screen layer 22. Both ends of the first screen layer 10 and the second screen layer 22 are fixed on the rack 8 through long and short hangers. The first screen layer 10 is fixed through the upper short hanger 7 and the upper long hanger, and the second screen layer 22 is fixed through the lower short hanger 21 and the lower long hanger. A plurality of spaced connection holes are arranged on the upper long hanger, the lower long hanger, the lower short hanger 21 and the upper short hanger 7. The first screen layer 10 and the second screen layer 22 are fixed by selecting different connection holes, and the included angle of the first screen layer 10 and the second screen layer 22 with the horizontal plane is changed.

[0065] The driving structure comprises a first driving assembly, a second driving assembly and a first motor 1. The first motor 1 rotates to drive the first pulley 17, and the second pulley 3 rotates through the belt to drive the shaft 24 to rotate, so that the first eccentric wheel 2 and the second eccentric wheel 16 rotate to drive the first transmission rod 4 and the second transmission rod 15 to reciprocate. The first driving assembly comprises the first transmission rod 4 and the first eccentric wheel 2, and the second driving assembly comprises the second transmission rod 15 and the second eccentric wheel 16. The first transmission rod 4 is connected to one end of the first screen layer 10 close to the first motor 1, and the second transmission rod 15 is connected to one end of the second screen layer 22 close to the first motor 1, to respectively drive the first screen layer 10 and the second screen layer 22 to reciprocate and sieve. The phase angle difference between the first screen layer and the second screen layer is 180 degrees.

[0066] Reference Figure 7 The vibration amplitude of the screen of the prince ginseng grading machine and the screen inclination angle can be adjusted. The lower short hanger 21 and the upper short hanger 7 are provided with a first connection hole 25, a second connection hole 26 and a third connection hole 27 which are spaced apart by 50 mm. The upper long hanger and the lower long hanger can be provided with connection holes with different intervals for fixation. The fixed holes 28 are connected with the first screen layer 10 and the second screen layer 22. The different connection holes on the rack and the hanger are connected in pin to change the vibration amplitude of the screen body. The long and short hangers are connected in pin with the rack through different connection holes to change the screen inclination angle, so as to change the speed of the prince ginseng moving on the screen, and to change the grading efficiency and precision.

[0067] Example two

[0068] As Figure 1 , Figure 2The method is applied to a radix paeoniae alba grading device in the embodiment, and the radix paeoniae alba grading device comprises a rack 8, a feeding structure, a rectifying structure, a first sieve layer 10, a second sieve layer 22 and a driving structure. The method comprises the following steps: feeding the radix paeoniae alba into the radix paeoniae alba grading device through the feeding structure, i.e. putting the radix paeoniae alba into a feeding hopper 5, and pushing the radix paeoniae alba in the feeding hopper into an outlet through rotation of a feeding wing 9. Then, the radix paeoniae alba passes through the rectifying structure, and the fed radix paeoniae alba is guided to form a plurality of columns of single-layer radix paeoniae alba arranged vertically. Further, the first sieve layer 10 and the second sieve layer 22 are driven by the driving structure to vibrate, the single-layer radix paeoniae alba entering the first sieve layer 10 is shaken and branched to the inverted-trapezoidal sieve hole through the vibration of the first sieve layer 10, and is longitudinally moved along the sieve hole to screen the radix paeoniae alba, the radix paeoniae alba larger than or equal to 5 mm of the sieve hole is collected into a first collecting groove 14 as not meeting the first standard, the radix paeoniae alba smaller than 5 mm of the sieve hole is screened by the first screening structure and falls into the second sieve layer 22 as meeting the first standard, and the radix paeoniae alba meeting the first standard passes through the first screening structure. The radix paeoniae alba passing through the first screening structure is screened by the second screening structure in the second sieve layer 22, the radix paeoniae alba larger than or equal to 3 mm of the sieve hole is collected into a second collecting groove as not meeting the second standard, and the radix paeoniae alba smaller than 3 mm of the sieve hole passes through the second screening structure and is collected into a third collecting groove 13 as meeting the second standard, and the screening is completed, wherein the size requirement of the radix paeoniae alba in the second standard is smaller than the size requirement of the radix paeoniae alba in the first standard, and the radix paeoniae alba passing through the grading machine is divided into three grades according to the size of the upper middle diameter. The method realizes accurate grading and screening of the radix paeoniae alba, improves the efficiency of grading and screening, and has a simple structure and convenient maintenance. The method solves the technical problems of low grading efficiency and low grading accuracy in the prior art.

[0069] It should be noted that the above only describes the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A radix of panax grading device, it is characterized in that, The utility model relates to a kind of grading machine for radix pseudoginseng, including: Rack; Feeding structure, the feeding structure includes outlet, for feeding radix pseudoginseng needing to be graded; Rectifying structure, the rectifying structure is communicated with the outlet of feeding structure, in the direction away from feeding structure, the rectifying structure includes connected short runner plate and long runner plate, for the flow of feeding radix pseudoginseng is guided to form multiple columns single layer radix pseudoginseng; First sieve layer, one side of the first sieve layer is connected with first collection tank, and the first sieve layer includes first screening structure, and single layer radix pseudoginseng is screened, and radix pseudoginseng that does not meet the first standard is collected into first collection tank, and radix pseudoginseng that meets the first standard passes through first screening structure; Second sieve layer, one side of the second sieve layer is connected with second collection tank, and third collection tank is provided on the side of the second sieve layer away from the first sieve layer, and the second sieve layer includes second screening structure, and radix pseudoginseng that passes through first screening structure is screened, and radix pseudoginseng that does not meet the second standard is collected into second collection tank, and radix pseudoginseng that meets the second standard passes through second screening structure and enters into third collection tank; Drive structure, the drive structure is fixed on the rack, and is connected with the first sieve layer and the second sieve layer, to provide vibration screening power for the first sieve layer and the second sieve layer; Wherein, the size requirement of radix pseudoginseng in the second standard is less than the size requirement of radix pseudoginseng in the first standard; The rectifying structure includes: Short runner plate, the inlet of the short runner plate is communicated with the outlet of the feeding structure, has inclination, for receiving the radix pseudoginseng fed from the outlet and rectifying and guiding, to form single layer radix pseudoginseng; Long runner plate, the inlet of the long runner plate is communicated with the outlet of the short runner plate, has inclination, for receiving the radix pseudoginseng flowed from the short runner plate, and is shunted and guided, to form multiple columns single layer radix pseudoginseng; Cover plate, is hinged and fixed on the inlet of the long runner plate on the side of the long runner plate close to the short runner plate through cover plate hinge shaft, forms cavity with the long runner plate, and the radix pseudoginseng is guided to form single layer radix pseudoginseng; The angle between the short runner plate and the long runner plate and horizontal plane is 40 degrees, and a plurality of convex hulls are provided on the side of the short runner plate close to the feeding structure, for the radix pseudoginseng is rectified and guided, to form single layer radix pseudoginseng; The side of the long runner plate close to the short runner plate is staggered and provided with a plurality of parallel A type guide bars and B type guide bars, the length of A type guide bar is greater than B type guide bar, and the plurality of A type guide bars and the plurality of B type guide bars are aligned at one end close to the outlet of the long runner plate, the distance between adjacent A type guide bar and B type guide bar is 40mm, for the radix pseudoginseng is shunted and guided; The first screening structure includes: First fixed frame; A plurality of first sieve strips, both ends of the plurality of first sieve strips are fixed on the first fixed frame, the cross section of each first sieve strip is triangular, and the first sieve filter hole with cross section inverted trapezoidal is formed between adjacent two first sieve strips, the minimum gap in the first sieve filter hole is 5mm, to form the first standard; Two first guide pieces are fixed on the first fixed frame and are not vertically arranged with the plurality of first sieve strips.

2. The radix of P. notoginseng grading device according to claim 1, characterized in that, The feeding structure includes: Feeding hopper, the feeding hopper includes an open cavity, in the direction close to rectifying structure, the cross-sectional area of the cavity gradually reduces and forms outlet, and the feeding hopper has first inclination; The feeding wing is arranged above the outlet of the feeding hopper to prevent the crown of the radix pseudoginseng and push the radix pseudoginseng in the feeding hopper into the outlet uniformly.

3. The Radix Pseudoginseng grading apparatus of claim 1, wherein, The second screening structure comprises: A second fixed frame; A plurality of second screen bars, both ends of which are fixed on the second fixed frame, and the cross section of each second screen bar is triangular, and the cross section of the second screen filter hole formed between two adjacent second screen bars is inverted trapezoidal, and the minimum gap in the second screen filter hole is 3mm, forming the second standard; Two second guide pieces are fixed on the second fixed frame and are arranged non-perpendicularly to the plurality of second screen bars.

4. The Radix Pseudoginseng grading apparatus of claim 1, wherein, Both ends of the first screen layer and the second screen layer are fixed on the rack through short suspender and long suspender, and a plurality of spaced connection holes are arranged on the short suspender and the long suspender, and the angle between the first screen layer and the second screen layer and the horizontal plane is changed by selecting different connection holes.

5. The Radix Pseudoginseng grading apparatus of claim 1, wherein, The driving structure comprises a first driving assembly and a second driving assembly, which respectively drive the first screen layer and the second screen layer to reciprocatingly vibrate and screen, and the difference between the phase angles of the first screen layer and the second screen layer is 180 degrees.

6. A method for grading Radix Pseudostellariae, characterized in that, The method is applied to the radix pseudoginseng grading device of any one of claims 1 to 5, and the radix pseudoginseng grading device comprises a rack, a feeding structure, a rectifying structure, a first screen layer, a second screen layer and a driving structure, and the method comprises: Feeding the radix pseudoginseng into the radix pseudoginseng grading device through the feeding structure; Guiding the fed radix pseudoginseng to form a plurality of single-layer radix pseudoginseng columns through the rectifying structure; Driving the first screen layer and the second screen layer through the driving structure, and screening the single-layer radix pseudoginseng entering the first screen layer through the first screening structure, collecting the radix pseudoginseng not meeting the first standard into the first collecting groove, and allowing the radix pseudoginseng meeting the first standard to pass through the first screening structure; Screening the radix pseudoginseng passing through the first screening structure through the second screening structure in the second screen layer, collecting the radix pseudoginseng not meeting the second standard into the second collecting groove, allowing the radix pseudoginseng meeting the second standard to pass through the second screening structure and be collected into the third collecting groove, and completing the screening, wherein the size requirement of the radix pseudoginseng in the second standard is smaller than the size requirement of the radix pseudoginseng in the first standard.

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