Automatic screening and classification device for pinellia

Abstract

The invention discloses an automatic screening and classification device for pinellia ternata, and relates to the technical field of pinellia ternata screening. The device comprises a mesh frame fixedly and obliquely mounted on a vibrating screen, a screen mesh being installed in parallel in the mesh frame, a flat plate installed in the mesh frame being arranged at the lower end of the screen mesh, a rotating roller being rotatably mounted in the mesh frame, two groups of the rotating rollers being sleeved with conveyor belts, and a material drop hole being opened in the mesh frame. The automatic screening and classification device for pinellia ternata can screen pinellia ternata particles of different diameters through the angle between the flat plate and the conveyor belt to form gradient separation, and can effectively screen and classify pinellia ternata particles of different diameters by cooperating with the functions of a material guide roller and a material guide trough, so as to screen soil and then classify them, and can effectively classify particles while improving the overall efficiency, so as to achieve dual uses of one machine, and the screening method is different from the screening of the screen mesh, and the pinellia ternata particles will not be stuck by the aperture, so that the efficiency will not be reduced in the continuous screening process.

Description

Technical Field

[0001] The invention relates to the technical field of pinellia ternata screening, and in particular to an automatic screening and classification device for pinellia ternata. Background Art

[0002] Pinellia ternata is a perennial herb of the genus Pinellia in the family Araceae. It has tubers, basal leaves with long petioles, and bulbils at the base of the petioles. The berries are small and red when ripe. The tubers of Pinellia ternata are used as medicine. They are poisonous, but can be used as medicine.

[0003] Because of the medicinal value of Pinellia, it is planted on a large scale in modernization. When harvesting, it is first dug mechanically, then screened, and finally peeled and washed. The existing screening of Pinellia mainly separates Pinellia from soil through screening mechanisms such as vibrating screens, but does not distinguish the size of the fruit itself. It cannot distinguish fruits of different sizes, and needs to be screened twice to distinguish Pinellia of different sizes. In addition, the existing screening method mainly relies on the mesh size of the screen for screening. For round Pinellia fruits, some particles close to the screen aperture are easy to cause blockage. Therefore, in the continuous screening process, as the screening continues, the screening efficiency is getting lower and lower. To this end, we propose an automatic screening and classification device for Pinellia. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic screening and classification device for Pinellia ternata to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic screening and sorting device for Pinellia ternata, comprising a mesh frame fixedly and obliquely installed on a vibrating screen, a screen mesh installed in parallel in the mesh frame, a flat plate installed in the mesh frame at the lower end of the screen mesh, two groups of synchronously rotating rollers rotatably arranged above the flat plate in the mesh frame, which are consistent with the inclination direction of the flat plate, and the angle between the axis of the rotating roller and the horizontal direction is greater than the angle between the length direction of the flat plate and the horizontal direction, conveyor belts are sleeved on the two groups of rotating rollers, and a plurality of blanking holes spaced apart along the axial direction of the rotating rollers are opened on the mesh frame, the blanking holes are close to the side wall of the mesh frame, and are located at one end of the forward direction of the lower surface of the conveyor belt.

[0006] Preferably, the outer surface of the conveyor belt is provided with spirally arranged receiving grooves, and every two or more receiving grooves constitute a group. The receiving grooves in the same group are located at the coaxial section of the conveyor belt and are evenly spaced in an array in the circumferential direction. The spiral angle of a single receiving groove does not exceed 180°, and the receiving grooves in different groups do not overlap in the axial direction of the rotating roller. A material guide roller is rotatably connected in the mesh frame, and the axis of the material guide roller is parallel to the axis of the rotating roller. A spirally arranged material guide groove is provided on the surface of the material guide roller. The material guide grooves are arranged corresponding to the number of groups of receiving grooves and the number of receiving grooves in each group. In any axial cross-sectional dynamic during the rotation of the material guide roller, the corresponding material guide groove opening is located below the opening of the receiving groove, and the outer edges of the two side walls of the material guide groove are fixed with material guide plates, and the blanking holes are located at the lower end of each group of receiving grooves. Limiting strips with arc-shaped cross-sections and concave upper surfaces are fixed on both sides of the plate.

[0007] Preferably, the receiving groove is left-handed, and the material guiding groove is left-handed, the receiving groove and the material guiding groove in the same group are both double-helix distributed, and the end face of the lower end of the material guiding roller rotates clockwise.

[0008] Preferably, a guide plate is fixedly connected to the bottom of the upper surface of the screen to guide and drive the pinellia away from the guide roller.

[0009] Preferably, the angle between the axis of the rotating roller and its vertical projection line on the flat plate is 0.5°-5°.

[0010] Preferably, the inner surface of the containing groove is provided with a smooth layer.

[0011] Preferably, the limiting strip is only arranged on the side where the material guide roller is located.

[0012] Preferably, the material guide plate is only arranged on one side of the material guide roller that carries the material.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention screens the pinellia ternata particles of different diameters by the angle between the flat plate and the conveyor belt, forming a gradient separation, and cooperates with the function of the guide roller and the guide trough to effectively screen and classify the pinellia ternata particles of different diameters, thereby screening the soil and then classifying them. While effectively classifying the particles, the overall efficiency can be improved, achieving dual-purposes of one machine.

[0015] The screening method in the present invention is different from the screening by a sieve, and the pinellia ternata particles will not be stuck by the aperture, so the efficiency will not be reduced during the continuous screening process;

[0016] The material guide groove in the present invention can also make the pinellia ternata particles contact each other to generate friction, thereby achieving the effect of peeling. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 for Figure 1 A schematic diagram of a local structure viewed from above;

[0019] Figure 3 for Figure 1 Front view of

[0020] Figure 4 It is a schematic diagram of the angle structure of the flat plate and the conveyor belt;

[0021] Figure 5 It is a schematic diagram of the axial cross-sectional structure of the receiving groove on the conveyor belt;

[0022] Figure 6 It is a schematic diagram of the axial section state of the overlapping state of the guide grooves in different axial directions;

[0023] Figure 7 for Figure 6 Trajectory state diagram of the screening particles in the cross-section state shown;

[0024] Figure 8 It is a schematic diagram of the structural state of a single limit strip;

[0025] Fig. 9 It is a schematic diagram of the states of different lateral positions of the receiving grooves in different axial directions.

[0026] In the figure: 1-screen frame; 2-screen; 3-plate; 4-rotating roller; 5-conveyor belt; 6-dropping hole; 7-accommodating slot; 8-material guide roller; 9-material guide slot; 10-material guide plate; 11-limiting bar; 12-guide plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The present invention provides a technical solution: an automatic screening and sorting device for pinellia, comprising a fixed and inclined mesh frame 1 installed on the main body of the vibrating screen, a screen 2 fixedly installed between the inner walls of the mesh frame, the screen vibrates with the action of the vibration motor on the device to separate the mixture of soil and fruit, and as the vibration proceeds, the soil is sieved out through the screen 2, and the fruit enters the flat plate 3, the flat plate 3 is fixed between the inner walls of the mesh frame 1, and the inclination angle of the flat plate 3 is the same as that of the screen, and one end of the two is connected;

[0029] The two sets of rotating rollers 4 are parallel, and the inclination angle is close to the inclination angle of the flat plate 3, and the direction is consistent. The two ends of the two sets of rotating rollers 4 are rotatably mounted on the inner wall of the screen frame 1 through the bearing seat, and the end of any rotating roller 4 is connected to a motor, which is driven to rotate. The two rotating rollers 4 are sleeved with a conveyor belt 5, such as Figure 5 As shown, the angle between the lower surface of the conveyor belt 5 and the horizontal plane is β, and the angle between the flat plate 3 and the horizontal plane is α, β>α, and the conveyor belt 5 has multiple functions, one of which is to screen individual pinellia particles of different sizes. Because β>α causes the upper surface of the flat plate 3 and the lower surface of the conveyor belt 5 to be non-parallel, that is, the right side spacing in the illustrated state is larger than the left side spacing, and then when the pinellia particles roll downward, the smaller particles can enter the left side, while the large particles are on the right side, forming a state of particle diameter gradient distribution from left to right, and after reaching the appropriate position, the particles are clamped by the conveyor belt 5 and the flat plate 3, so that the conveyor belt 5 plays another role, classifying and conveying the particles separated by size, and the conveyed pinellia particles fall into the drop hole 6, and are discharged, because the discharge positions of pinellia particles of different diameters are different, and thus they fall into different drop holes 6, thereby achieving the purpose of classification.

[0030] See also Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 The receiving groove 7 is provided on the outer surface of the conveyor belt 5. When the conveyor belt 5 is cylindrical, the receiving groove 7 is spirally distributed on the surface of the conveyor belt 5. Figure 1 The middle conveyor belt is waist-shaped, and the receiving groove 7 is mainly used for centralized fixed-point conveying of particles. Because when the conveyor belt 5 rotates, it will drive the pinellia ternata particles to roll horizontally on the flat plate 3, and the gradient distribution of the pinellia ternata particles is continuous, but the drop holes 6 need to be set separately, that is, between two adjacent drop holes 6, some particles will directly fall on the surface of the mesh frame 1, which will rebound, resulting in inaccurate screening of some pinellia ternata particles. If the receiving groove 7 is set, the particles will enter the area of ​​the receiving groove 7 during the rotation of the conveyor belt 5. The receiving groove 7 is concave, and the extrusion force of the particles inside it is less than that of the area at the same position horizontally, so the particles are continuously concentrated in the receiving groove 7 and discharged uniformly;

[0031] There are many receiving grooves 7, that is, there are multiple groups distributed along the axial direction of the rotating roller 4, each group is composed of two or more, that is, a double helix or multi-helix structure, and the spiral angle of a single receiving groove 7 is not limited. It is set to no more than 180° here for the convenience of the guide roller. In the axial direction of the rotating roller, the receiving grooves 7 at different axial positions are used to collect the pinellia with different diameter particles. Therefore, if there is overlap in the axial position, it will cause errors in the diameter partition of some particles.

[0032] When the receiving groove 7 is provided, the discharge position of the end edge will change continuously (spiral change process), so a material receiving part is provided correspondingly, and the material receiving part is a material guide roller 8, and both ends of the material guide roller 8 are rotatably mounted on the inner wall of the screen frame 1 through a bearing seat, and one end of the material guide roller 8 is connected to the motor drive;

[0033] The guide grooves 9 are provided on the guide roller 8 corresponding to the receiving grooves 7, that is, the number of groups and the number of each group correspond to each other, and the axial positions also correspond to each other, and at the same time, in the axial section of any rotation state of the two, the opening of the corresponding guide groove 9 is located below the opening of the receiving groove 7, such as Figure 7 As shown in the figure, the opening of the guide groove 9 at the upper position of the cross section of the guide roller 8 is located below the discharge side of the flat plate 3 and the conveyor belt 5, and the lateral width of the guide groove 9 includes the edge of the flat plate 3, and the lateral width is greater than the corresponding diameter of the pinellia ternata particles. This state includes a variety of modes, that is, the guide roller 8 can be selected to be installed on the left or right side of the flat plate 3, for example Figure 1 On the left side of the orientation shown, the conveyor belt 5 rotates clockwise (counterclockwise on the right side), and the receiving groove 7 can be either left-handed or right-handed. The figure shows that it is left-handed. When the receiving groove 7 is in the left-handed state, the guide groove 9 can be left-handed or right-handed, but it needs to cooperate with the steering, that is, in Figure 3 In the state shown, the guide roller 8 rotates clockwise, and the guide trough 9 needs to be left-handed. If the guide roller 8 rotates counterclockwise, the guide trough 9 needs to be right-handed to ensure that the cross-sectional openings of the two are always in the same state during the rotation process ( Figure 7 state), but not at the same axial position, but changing up and down, that is, the receiving groove 7 causes the opening at the edge of the plate 3 to move upward as the conveyor belt 5 rotates, and the corresponding guide groove 9 also needs to maintain the same change. Although the spiral diameters of the two are different, the rotation speeds of the guide roller 8 and the rotating roller 4 can be adjusted to keep consistent;

[0034] In order to facilitate the discharge of the pinellia granules into the same drop hole after entering the guide groove 9, a guide plate 10 is provided to prevent the pinellia granules from falling prematurely. Figure 7 As shown, the guide plate 10 is arranged at the outer edge of the side wall of the guide groove 9, and forms a concave structure with the side wall. The pinellia ternata particles are restricted by the structure, that is, Figure 7In the state, when the guide roller 8 rotates clockwise for no more than 180°, the pinellia granules will not fall out of the opening at the top formed by the cross section of the guide trough 9, so that the pinellia granules will only fall out when the opening reaches the bottom, and because the guide trough 9 is spirally arranged, after the guide roller 8 rotates a certain angle, the pinellia granules will directly slide to a section of the position just below the guide trough 9, that is, they will fall out after sliding a certain distance axially downwardly in the guide roller 8. Therefore, this method makes it unnecessary for the blanking hole 6 to cover the entire material, because the upper end portion of the same guide trough 9 along the spiral advancing direction will not form blanking, because the particles entering this part will slide downward and then fall out, so that a non-blanking area is formed between the two adjacent blanking holes 6, and no overlap or intersection is formed, and the opening of the guide trough 9 in the cross section tends to the side of the rotation direction of the guide roller 8, so that the sliding of the material will not run to the other side, and because of the vibration of the vibrating screen itself, the particles will not be stuck in the area between the guide trough 9 and the guide plate 10;

[0035] like Figure 6 As shown, if two different axial guide grooves 9 have overlapping parts, the materials with similar axial sections will fall close to each other. If the particles with the same diameter are screened, it will not be affected, but if the particles with different diameters are screened, it will be affected. Therefore, it is better not to overlap.

[0036] The limiting strip 11 is a structure with the side convex upward and the upper surface concave, and the other side is connected to the flat plate 3. The concave is convenient for forming a quantitative space with the convexity generated by the rotating roller 4 on the conveyor belt 5, and the convex edge is to prevent some smaller particles from falling off in advance;

[0037] On the other hand, because the receiving groove 7 has a concentrating effect on the pinellia ternata particles, the particles will rub against each other while rotating, and can also play a role in peeling.

[0038] The receiving groove 7 is left-handed, and the material guiding groove 9 is left-handed. The receiving groove 7 and the material guiding groove 9 in the same group are both double-helix distributed, and the end surface of the lower end of the material guiding roller 8 rotates clockwise.

[0039] like Figure 1 As shown, when the guide plate 12 is not provided, the particles on the left side will be too close to the guide roller 8, causing them to be discharged without entering the guide trough 9, so that they cannot be discharged in a concentrated manner and cannot generate rolling friction for peeling.

[0040] The angle between the axis of the rotating roller 4 and its vertical projection line on the flat plate 3 is 0.5°-5°, that is, Figure 4 The angle α-β in , the larger the angle, that is, the larger the material particle gradient range formed when the axial length of the conveyor belt 5 (the axial direction of the rotating roller) is fixed.

[0041] The inner surface of the receiving groove 7 is provided with a smooth layer. The function of the smooth layer is that when the area under the same transverse cross-section of the receiving groove 7 is not fully filled with particles (there are gaps between the particles and they are not in contact), some particles will not roll due to the top sliding. Although they roll on the flat plate 3, they slide between the conveyor belt 5, so that the particles will contact each other, thereby generating relative sliding friction to peel. Because the receiving groove 7 needs to be deformed in the area of ​​the rotating roller 4, the receiving groove 7 can only be a flexible structure, preferably plastic or rubber, such as Teflon.

[0042] The guide plate 10 is only arranged on one side of the guide roller 8 carrying the material, that is, it is selected according to the rotation direction of the guide roller 8, such as Figure 8 , that is, in Figure 7 In the illustrated situation, only the right side needs to have the material guide plate 10 , and the other side does not need it.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic screening and sorting device for pinellia, comprising a screen frame (1) fixedly and obliquely mounted on a vibrating screen, a screen (2) being mounted in parallel in the screen frame (1), characterized in that: The lower end of the screen (2) is provided with a flat plate (3) installed in a screen frame (1). Two groups of synchronously rotating rollers (4) are rotatably arranged above the flat plate (3) in the screen frame (1) and are in the same inclination direction as the flat plate (3). The angle between the axis of the rotating roller (4) and the horizontal direction is greater than the angle between the length direction of the flat plate (3) and the horizontal direction. A conveyor belt (5) is sleeved on the two groups of rotating rollers (4). The screen frame (1) is provided with a plurality of blanking holes (6) distributed at intervals along the axial direction of the rotating rollers (4). The blanking holes (6) are close to the side wall of the screen frame (1) and are located at one end of the lower surface of the conveyor belt (5) in the forward direction. The outer surface of the conveyor belt (5) is provided with spirally arranged receiving grooves (7). Every two or more of the receiving grooves (7) constitute a group. The receiving grooves (7) in the same group are located at the coaxial section of the conveyor belt (5) and are uniformly spaced in the circumferential direction. The receiving grooves (7) are evenly spaced and arranged in an array. The spiral angle of a single receiving groove (7) does not exceed 180 degrees. The receiving grooves (7) of different groups do not overlap in the axial direction of the rotating roller (4). A material guide roller (8) is rotatably connected in the screen frame (1). The axis of the material guide roller (8) is parallel to the axis of the rotating roller (4). The surface of the material guide roller (8) is provided with a spirally arranged material guide groove (9). The material guide groove (9) is arranged corresponding to the number of groups of receiving grooves (7) and the number of each group. In any axial section during the rotation of the material guide roller (8), the opening of the corresponding material guide groove (9) is located below the opening of the receiving groove (7). The outer edges of the two side walls of the material guide groove (9) are fixed with material guide plates (10). The blanking holes (6) are located at the lower end of each group of receiving grooves (7). The two side edges of the flat plate (3) are fixed with limit strips (11) with an arc-shaped cross section and a concave upper surface.

2. The automatic screening and sorting device for Pinellia ternata according to claim 1, characterized in that: The receiving groove (7) is left-handed, and the material guide groove (9) is left-handed. The receiving groove (7) and the material guide groove (9) in the same group are both double-helix distributed, and the end surface of the lower end of the material guide roller (8) rotates clockwise.

3. The automatic screening and sorting device for Pinellia ternata according to claim 2, characterized in that: A guide plate (12) is fixedly connected to the bottom of the upper surface of the screen (2) and is used to guide and drive the pinellia tuber away from the material guide roller (8).

4. The automatic screening and sorting device for Pinellia ternata according to claim 1, characterized in that: The angle between the axis of the rotating roller (4) and its vertical projection line on the flat plate (3) is 0.5°-5°.

5. The automatic screening and sorting device for Pinellia ternata according to claim 1 is characterized in that: The inner surface of the containing groove (7) is provided with a smooth layer.

6. The automatic screening and sorting device for Pinellia ternata according to claim 1 or 2, characterized in that: The limiting strip (11) is only arranged on the side where the material guide roller (8) is located.

7. The automatic screening and sorting device for Pinellia ternata according to claim 1 or 2, characterized in that: The material guide plate (10) is only arranged on one side of the material guide roller (8) that carries the material.

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