Conveying device for screening potato blocks with excellent characters

Abstract

The invention relates to the technical field of potato screening, in particular to a conveying device for screening potato blocks with excellent characters, which comprises a bottom plate, a fixed column, a screening seat, a bearing disc, a screening unit and a rotating roller, the potato screening device can solve the following problems existing in the process of screening potatoes in the prior art: the screening plate needs to be frequently disassembled, the potatoes cannot be continuously screened, and the screening efficiency is influenced; the potatoes with irregular shapes and overlarge diameters cannot be screened out, so that the screened potatoes are easily inconsistent in shape, and the appearance quality of the potatoes is influenced; according to the potato block screening device, continuous multi-stage screening can be conducted on potato blocks, the potato blocks with the small diameters can be screened out, the potato blocks with the small diameters can be further screened out through the rotating rollers and the positioning rollers, and the potato blocks with the irregular shapes and the too large diameters can also be screened out, so that the potato blocks with the excellent characters are screened out, and the appearance quality of the screened potato blocks is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of potato screening, in particular to a conveying device for screening potato tubers with excellent traits. Background Art

[0002] Potato is an important crop. In order to improve the appearance quality of potatoes, potato tubers need to be screened accordingly. In this process, potato tubers need to be screened according to their size and shape, so that the screened potato tubers are uniform in size and shape, and avoid obvious unevenness or deformed parts.

[0003] However, currently, potatoes are usually selected manually during the screening process, which is not only inefficient but also increases labor costs. With the development of science and technology, technicians in related fields have also optimized the screening of potato pieces accordingly. In order to make a more accurate comparison, a Chinese patent with publication number CN110560361A discloses a potato screening machine, including a working platform, a screening bin and a bidirectional output motor are installed on the top of the working platform, a first sieve plate, a second sieve plate and a third sieve plate can be installed at the bottom of the screening bin, a material drop through hole is provided on the working platform at the bottom of the screening bin, and a collection bin is provided at the bottom of the working platform corresponding to the material drop through hole.

[0004] When the above-mentioned prior art is used, potatoes are first put into the screening bin, and then the screening bin is driven to swing left and right by a bidirectional output motor. The potatoes are screened in turn on the first sieve plate, the second sieve plate and the third sieve plate. After the potatoes pass through the first sieve plate, they are removed and fall onto the second sieve plate. Then the second sieve plate is removed, and the potatoes fall onto the third sieve plate and then fall into the collection bin, thereby completing the screening.

[0005] However, the above-mentioned prior art still has some shortcomings in the process of screening potatoes:

[0006] 1. Although the above-mentioned prior art can realize the screening of potatoes, the first screen plate and the second screen plate need to be frequently disassembled during the screening process, so the potatoes cannot be screened continuously and uninterruptedly, which affects the screening efficiency.

[0007] 2. Although potatoes can be screened through multiple sieve plates, it is easy for the potato pieces passing through the sieve plates to be flat or other irregular shapes. Therefore, it is impossible to screen out irregular potato pieces, and it is impossible to screen out potatoes with too large diameters, which easily leads to inconsistent shapes of the screened potatoes, affecting the appearance quality of the potatoes.

[0008] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing potato screening methods. Summary of the invention

[0009] In order to solve the above problems, the present invention provides a conveying device for screening potato tubers with excellent properties, comprising a bottom plate, a fixing column, a screening seat and a storage basket are sequentially arranged on the upper end of the bottom plate along the length direction, a supporting tray is installed on the upper end of the fixing column through a bracket, a screening unit for preliminary screening of potato tubers is installed on the supporting tray, the screening unit comprises a through hole opened on the supporting tray, a lever for sending potato tubers with smaller diameters to the through hole for screening is installed on the upper end of the supporting tray, and a rotating roller for secondary screening of the potato tubers after preliminary screening is rotatably installed on the screening seat.

[0010] As a preferred technical solution of the present invention, the screening unit further comprises a positioning motor mounted on the upper end of the fixed column, a linkage shaft connected to the output shaft of the positioning motor is fixedly penetrated through the middle of the tray, and the output shaft of the positioning motor is connected to the linkage shaft;

[0011] A linkage ring is provided on the fixed sleeve of the outer wall of the linkage shaft, and a plurality of equidistantly distributed shifting rods are evenly installed on the outer wall of the linkage ring. The lower end of the shifting rod is in sliding contact with the top of the bearing tray, and a receiving plate is installed on the side of the end of the shifting rod away from the linkage ring close to its movement direction.

[0012] As a preferred technical solution of the present invention, the top of the supporting tray has a folded edge extending upward, the end of the lever away from the linkage ring is in sliding contact with the folded edge, the side of the supporting tray away from the screening seat gradually tilts downward, and a plurality of through holes are evenly provided on the side of the supporting tray away from the screening seat, an auxiliary component for adjusting the diameter of the through holes is installed on the bottom plate, a notch is provided on the side of the supporting tray close to the screening seat, and a correction unit for guiding the potato pieces to the screening seat is installed at the notch.

[0013] As a preferred technical solution of the present invention, the auxiliary component includes a support plate installed on the upper end of the base plate, the support plate is located on the side of the fixed column away from the screening seat, a fan-shaped plate is installed on the upper end of the support plate, a plurality of top columns corresponding to the positions of the through holes are installed on the upper end of the fan-shaped plate, a plug sleeve is provided on the sliding sleeve of the outer wall of the top column, a lifting plate is commonly installed between the plurality of plug sleeves, a plurality of lifting cylinders are installed on the lower end of the fan-shaped plate, and the telescopic end of the lifting cylinder passes through the fan-shaped plate and is connected to the lifting plate.

[0014] As a preferred technical solution of the present invention, the correction unit includes a guide plate installed at the lower end of the notch, two correction plates are symmetrically installed on the upper end of the guide plate along the width direction, the side of the correction plate close to the supporting tray is inclined toward the side away from the middle of the guide plate, and a mounting plate located between the fixed column and the screening seat is installed on the upper end of the bottom plate, and an actuator is arranged between the mounting plate and the correction plate.

[0015] As a preferred technical solution of the present invention, the actuator assembly includes a conveyor belt, and the two correction plates are provided with accommodating grooves on the opposite sides close to the supporting tray. The conveyor belt is movably installed inside the accommodating grooves, and the outer wall of the conveyor belt is provided with multiple positioning strips that are equidistantly arranged and longitudinally distributed. Two limit strips are symmetrically installed on the opposite sides of the two correction plates, and two actuator shafts for controlling the rotation of the conveyor belt are rotatably installed inside the correction plates.

[0016] As a preferred technical solution of the present invention, the actuator assembly also includes an adapter shaft rotatably inserted into the mounting plate, the adapter shaft and the output shaft of the positioning motor are connected via a belt drive, and any actuator shaft in each correction plate is connected to the adapter shaft via a belt drive after passing through the mounting plate.

[0017] As a preferred technical solution of the present invention, the screening seats have two and are symmetrically distributed along the width direction of the bottom plate. A rotating roller and a positioning roller are respectively installed inside the two screening seats. The rotating rollers and the screening seats are rotatably matched. The side of the rotating roller and the positioning roller away from the supporting tray is located above the storage basket. The outer wall of the rotating roller is provided with a threaded strip, and the spiral direction of the threaded strip is opposite to the rotation direction of the rotating roller.

[0018] As a preferred technical solution of the present invention, the rotating roller and the positioning roller are both rotatably set on the outer wall of the mounting plate at one end close to the supporting tray. The end of the rotating roller passes through the mounting plate and is sleeved with an executing bevel gear. The lower end of the mounting plate is rotatably set with a positioning shaft. The outer wall of the positioning shaft is sleeved with a driving bevel gear that meshes with the executing bevel gear. The positioning shaft and any one of the executing shafts are connected by a belt drive.

[0019] As a preferred technical solution of the present invention, the screening seat on which the rotating roller is installed is in sliding contact with the bottom plate, a receiving opening is provided on the mounting plate, a displacement plate is movably arranged in the receiving opening, one end of the rotating plate close to the supporting tray is rotatably arranged on the displacement plate, and pushing cylinders are respectively arranged between the mounting plate and the displacement plate and between the two screening seats.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] 1. The present invention can perform multi-stage screening of potato tubers, wherein the through holes on the supporting tray can screen out potato tubers with smaller diameters, and the rotating rollers and the positioning rollers can further screen out potato tubers with smaller diameters, and can also screen out potato tubers with irregular shapes and excessively large diameters, thereby screening out potato tubers with excellent traits, and can enhance the screening effect on potato tubers to ensure the appearance quality of the screened potato tubers.

[0022] Second, the present invention can move the potato nuggets and roll them on the upper end of the tray by driving multiple levers to move in a circumferential direction through a linkage ring, during which time the potato nuggets with smaller diameters can fall through the through holes, thereby preliminarily screening out the potato nuggets that do not meet the standards, and inserting the plug barrel into the through hole can reduce the diameter of the through hole according to the screening standard, so as to facilitate screening out the potato nuggets with too small diameters. In addition, when the plug barrel moves upward, the potato nuggets stuck in the through hole can be pushed out upward, and the push column can push out the potato nuggets stuck in the plug barrel to avoid blockage.

[0023] 3. The present invention can guide and limit the potato nuggets through the correction plate, so that the potato nuggets can only roll down along the middle of the guide plate, and can drive the potato nuggets to rotate through two conveyor belts, so that the length direction of the elliptical and elongated potato nuggets is the same as their rolling direction and then roll down along the two correction plates, so that the potato nuggets can fall accurately on the screening seat and be subsequently screened for the second time.

[0024] Fourth, the present invention controls the rotating roller to rotate toward the side close to the positioning roller. While the rotating roller rotates, it cooperates with the threaded strip to transport the potato nuggets to the side close to the storage basket. It can also drive the potato nuggets to rotate, so as to facilitate the rotational comprehensive inspection of the potato nuggets by the rotating roller and the positioning roller. If the potato nuggets are flat or other irregular shapes, they can be effectively screened out by driving them to rotate, thereby ensuring the appearance quality of the screened potato nuggets.

[0025] 5. The present invention drives the screening seat on which the rotating roller is installed to move to a side away from another screening seat by pushing the air cylinder, so that the distance between the rotating roller and the positioning roller can be adjusted according to the screening standard. After the adjustment, potato pieces with different diameters can be screened out, which greatly improves the adaptability of the present invention.

[0026] 6. In the process of screening potato tubers by rotating rollers and positioning rollers of the present invention, the moving screening column can remove potato tubers with diameters larger than the distance between the rotating rollers and the screening column, thereby ensuring that the screened potato tubers are of uniform size and shape, and further ensuring the overall appearance quality of the potato tubers; in addition, by adjusting the distance between the screening column and the rotating rollers and the positioning rollers, adaptive adjustments can be made according to the screening standards, and potato tubers of different diameters can be removed after the adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a schematic diagram of the structure between the support tray and the screening unit of the present invention.

[0030] Figure 3 The present invention Figure 2A partial enlarged view of point A.

[0031] Figure 4 It is a schematic diagram of the structure between the support tray and the correction unit of the present invention.

[0032] Figure 5 It is a structural schematic diagram of the correction unit of the present invention.

[0033] Figure 6 It is a schematic diagram of the structure among the screening seat, the rotating roller and the mounting plate of the present invention.

[0034] Figure 7 The present invention Figure 6 A partial enlarged view of point B.

[0035] Figure 8 It is a schematic diagram of the structure among the screening seat, rotating roller, positioning roller and mounting plate of the present invention.

[0036] Fig. 9 It is a schematic diagram of the structure between the screening seat and the rejecting unit of the present invention.

[0037] In the figure, 1, bottom plate; 2, fixed column; 3, screening seat; 31, rotating roller; 32, positioning roller; 33, threaded strip; 34, execution bevel gear; 35, positioning shaft; 36, driving bevel gear; 37, displacement plate; 38, pushing cylinder; 4, storage basket; 5, bracket; 6, tray; 61, correction unit; 611, guide plate; 612, correction plate; 613, mounting plate; 614, execution assembly; 615, conveyor belt; 616, limit strip; 617, execution shaft; 618, transfer shaft; 7, screening Unit; 71. Through hole; 72. Push rod; 721. Receiver plate; 73. Positioning motor; 74. Linkage shaft; 75. Linkage collar; 76. Auxiliary component; 761. Support plate; 762. Fan plate; 763. Push column; 764. Plug cylinder; 765. Lifting plate; 766. Lifting cylinder; 8. Removal unit; 81. Fixed seat; 82. Adjustment slot; 83. Support plate; 84. Threaded rod; 85. Stabilizing plate; 86. Connecting shaft; 87. Support plate; 88. Removal column; 89. Receiving bucket; 80. Transfer shaft. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-Figure 9 Embodiments of the present invention are described in detail.

[0039] The embodiment of the present application discloses a conveying device for screening potato tubers with excellent traits. The conveying device for screening potato tubers with excellent traits of the present application is mainly used in the process of screening potato tubers. In terms of technical effect, it can perform multi-stage screening on the potato tubers, not only can it screen out potato tubers with too large and small diameters, but also can screen out potato tubers with irregular shapes, thereby enhancing the screening effect on the potato tubers to ensure the appearance quality of the screened potato tubers; especially in the process of screening out potato tubers with smaller diameters, potato tubers with different diameters can be screened out by adjusting the diameter of the through hole 71, so as to facilitate adaptive adjustment according to the screening standard; further, the conveying device for screening potato tubers with excellent traits can also perform a rotary comprehensive detection of the potato tubers, and can screen out flat or other irregularly shaped potato tubers, thereby ensuring the appearance quality of the screened potato tubers.

[0040] Embodiment 1:

[0041] Reference Figure 1 and Figure 2 As shown, a conveying device for screening potato tubers with excellent properties comprises a bottom plate 1, a fixing column 2, a screening seat 3 and a storage basket 4 are sequentially arranged on the upper end of the bottom plate 1 along the length direction, a receiving tray 6 is mounted on the upper end of the fixing column 2 through a bracket 5, a screening unit 7 for preliminary screening of potato tubers is mounted on the receiving tray 6, the screening unit 7 comprises a through hole 71 opened on the receiving tray 6, a lever 72 for sending potato tubers with smaller diameters to the through hole 71 for screening is mounted on the upper end of the receiving tray 6, and a rotating roller 31 for secondary screening of the potato tubers after preliminary screening is rotatably mounted on the screening seat 3.

[0042] In the specific implementation process, the potato nuggets to be screened are first poured onto the receiving tray 6, and then the screening unit moves the potato nuggets along the upper end of the receiving tray 6 through the lever 72, so that the potato nuggets roll on the upper end of the receiving tray 6. During this period, the potato nuggets with smaller diameters fall downward through the through holes 71, while the potato nuggets that meet the standards roll along the receiving tray 6 to the screening seat 3, so that the potato nuggets can be screened for the second time by the rotating roller 31. After screening, the potato nuggets that meet the standards fall into the storage basket 4, so that the potato nuggets can be screened in multiple stages by conveying.

[0043] Continue to refer to Figure 1 and Figure 2As shown, in order to facilitate the lever 72 to move the potato pieces to roll along the upper end of the tray 6, in this embodiment, the screening unit 7 also includes a positioning motor 73 installed at the upper end of the fixed column 2, and a mounting groove is provided at the upper end of the fixed column 2. The positioning motor 73 is arranged inside the mounting groove. A linkage shaft 74 connected to the output shaft of the positioning motor 73 is fixedly penetrated in the middle of the tray 6, and the output shaft of the positioning motor 73 is connected to the linkage shaft 74; a linkage ring 75 is fixedly sleeved on the outer wall of the linkage ring 75, and the outer wall of the linkage ring 75 is evenly installed with There are multiple equidistantly distributed levers 72, and the lower ends of the levers 72 are in sliding contact with the top of the tray 6. An L-shaped receiving plate 721 is installed on the side close to the movement direction of the end of the lever 72 away from the linkage ring 75. A space for accommodating potato nuggets that meet the standards is formed between the receiving plate 721 and the lever 72, and a guide plate is provided on the side of the receiving plate 721 away from the lever 72, which is gradually inclined toward the side close to the linkage ring 75. The guide plate can guide the potato nuggets into the above-mentioned space, making it easy for the potato nuggets to quickly enter the space.

[0044] It should be noted that the top of the receiving tray 6 has an upwardly extending folded edge, and the end of the lever 72 away from the linkage ring 75 is in sliding contact with the folded edge. The side of the receiving tray 6 away from the screening seat 3 gradually tilts downward, and a plurality of through holes 71 are evenly provided on the side of the receiving tray 6 away from the screening seat 3. An auxiliary component 76 for adjusting the diameter of the through holes 71 is installed on the bottom plate 1. A notch is provided on the side of the receiving tray 6 close to the screening seat 3. The space between the receiving plate 721 and the lever 72 is located corresponding to the position of the notch. That is, when the lever 72 drives the receiving plate 721 to move to the notch, the space between the lever 72 and the receiving plate 721 is located above the notch, which facilitates the potato nuggets to fall through the notch. A correction unit 61 for guiding the potato nuggets to the screening seat 3 is installed at the notch.

[0045] In the specific implementation process, the positioning motor 73 is first started, and the positioning motor 73 drives the linkage shaft 74 and the linkage ring 75 to rotate as a whole, and the linkage ring 75 drives the multiple levers 72 to perform counterclockwise circumferential motion (in Figure 2 ), then pour the potato pieces to be screened into the upper end of the tray 6, and the lever 72 pushes the potato pieces counterclockwise so that the potato pieces roll on the upper end of the tray 6; when the diameter of the potato pieces is small, they will fall downward when passing through the through hole 71, so that the potato pieces that do not meet the standards can be preliminarily screened out, and the lever 72 can push the potato pieces with the standard diameter to the notch, and then the potato pieces are guided to the screening seat 3 for secondary screening under the action of the correction unit 61.

[0046] Reference Figure 2 and Figure 3As shown, since the diameter of the through hole 71 cannot be changed, the diameter of the through hole 71 can be adjusted according to the screening standard in this embodiment, so as to screen out potato tubers smaller than the diameter of the through hole 71. Based on this, in this embodiment, the auxiliary component 76 includes a support plate 761 installed on the upper end of the bottom plate 1, the support plate 761 is located on the side of the fixed column 2 away from the screening seat 3, and a fan-shaped plate 762 parallel to the support tray 6 is installed on the upper end of the support plate 761, and a plurality of top columns 763 corresponding to the position of the through hole 71 are installed on the upper end of the fan-shaped plate 762. A plug cylinder 764 is provided on the outer wall of the top column 763. The outer diameter of the plug cylinder 764 is smaller than the inner diameter of the through hole 71. A lifting plate 765 is installed between the plurality of plug cylinders 764, and a plurality of lifting cylinders 766 are installed at the lower end of the fan-shaped plate 762. The telescopic end of the lifting cylinder 766 passes through the fan-shaped plate 762 and is connected to the lifting plate 765.

[0047] In the initial state, the telescopic end of the lifting cylinder 766 is in a retracted state, and the lifting plate 765 and the plug cylinder 764 are both in the lowest position. At this time, the diameter of the through hole 71 does not change.

[0048] During the specific implementation process, when it is necessary to adjust the diameter of the through hole 71 according to the screening standard, the lifting cylinder 766 is started, and the lifting cylinder 766 drives the lifting plate 765 and the plug tube 764 to move upward as a whole, so that the plug tube 764 is inserted into the through hole 71. At this time, the gap between the outer wall of the plug tube 764 and the inner wall of the through hole 71 is not enough for the potato pieces to fall, so the potato pieces with smaller diameters fall from the inside of the plug tube 764, so that the diameter of the through hole 71 can be reduced according to the screening standard, so as to facilitate the screening of potato pieces with too small diameters; in addition, when the plug tube 764 moves upward, it can also push out the potato pieces stuck in the through hole 71 to avoid blockage of the through hole 71, and when the plug tube 764 moves down and resets, the push column 763 is inserted into the plug tube 764, so as to push out the potato pieces stuck in the plug tube 764, and at the same time avoid blockage inside the plug tube 764.

[0049] Reference Figure 4 and Figure 5 As shown, in order to prevent oval or elongated potato nuggets from falling laterally from the notch or rotating and falling on the screening seat 3, which makes secondary screening difficult, it is necessary to correct the potato nuggets after the initial screening. Based on this, in the present embodiment, the correction unit 61 includes a guide plate 611 installed at the lower end of the notch, and the two sides of the guide plate 611 gradually tilt downward to the middle, and the side of the guide plate 611 close to the screening seat 3 gradually tilts downward, and two correction plates 612 are symmetrically installed at the upper end of the guide plate 611 along the width direction, and the side of the correction plate 612 close to the supporting tray 6 tilts toward the side away from the middle of the guide plate 611, and a mounting plate 613 located between the fixing column 2 and the screening seat 3 is installed at the upper end of the bottom plate 1, and an actuator component 614 is arranged between the mounting plate 613 and the correction plate 612.

[0050] Furthermore, in the present embodiment, the actuator component 614 includes a conveyor belt 615, and the two correction plates 612 are provided with receiving grooves on opposite sides close to the supporting tray 6, and the conveyor belt 615 is movably installed inside the receiving groove. The outer wall of the conveyor belt 615 is provided with a plurality of positioning strips which are arranged equidistantly and distributed longitudinally, and two limit strips 616 are symmetrically installed on the opposite sides of the two correction plates 612, and two actuator shafts 617 for controlling the rotation of the conveyor belt 615 are rotatably installed inside the correction plates 612.

[0051] Furthermore, in this embodiment, the actuator assembly 614 also includes an adapter shaft 618 rotatably passed through the mounting plate 613, and the adapter shaft 618 and the output shaft of the positioning motor 73 are connected by a belt drive. Any actuator shaft 617 in each correction plate 612 passes through the mounting plate 613 and is installed with an auxiliary shaft through a coupling, and the auxiliary shaft and the adapter shaft 618 are connected by a belt drive.

[0052] In the specific implementation process, after the lever 72 pushes the potato nuggets that meet the standards to the notch, the potato nuggets fall on the upper end of the guide plate 611 and roll along the guide plate 611 to the side close to the screening seat 3. During this period, the potato nuggets can be guided and limited by the correction plate 612, so that the potato nuggets can only roll along the middle of the guide plate 611 to ensure that the potato nuggets can accurately fall on the screening seat 3; at the same time, when the output shaft of the positioning motor 73 rotates, the adapter shaft 618 is driven to rotate synchronously counterclockwise, and the adapter shaft 618 drives the conveyor belt 615 to move synchronously through the execution shaft 617. The two conveyor belts 615 rotate in the same direction, so that the opposite sides of the two conveyor belts 615 move in opposite directions (in Figure 5 As shown in the figure, when the potato nuggets roll down along the guide plate 611, they come into contact with the conveyor belt 615. The two conveyor belts 615 exert opposite friction forces on the potato nuggets, which can drive the potato nuggets to rotate, so that the length direction of the elliptical and elongated potato nuggets is the same as their rolling direction, and then they roll down along the two correction plates 612, so that the potato nuggets can accurately fall on the screening seat 3 and be subsequently screened for the second time; the potato nuggets can be correspondingly limited by the limit strips 616, so that the potato nuggets can roll or slide down along the limit strips 616, so as to avoid the potato nuggets rolling in different directions, which may cause the potato nuggets to fall easily or affect the secondary screening effect.

[0053] Reference Figure 6 , Figure 7 and Figure 8As shown, in order to improve the screening effect of potato tubers, in this embodiment, the potato tubers can be screened for the second time. Specifically, the screening seat 3 has two and is symmetrically distributed along the width direction of the bottom plate 1. The two screening seats 3 are respectively installed with a rotating roller 31 and a positioning roller 32. The rotating roller 31 and the screening seat 3 are rotatably matched. There is a gap between the rotating roller 31 and the positioning roller 32 for screening potato tubers with smaller diameters. A discharge port is provided on the screening seat 3 on which the positioning roller 32 is installed. The side of the rotating roller 31 and the positioning roller 32 away from the supporting tray 6 is located above the storage basket 4. The outer wall of the rotating roller 31 is provided with a threaded strip 33, and the spiral direction of the threaded strip 33 is opposite to the rotation direction of the rotating roller 31.

[0054] Furthermore, in the present embodiment, the rotating roller 31 and the positioning roller 32 are both rotatably arranged on the outer wall of the mounting plate 613 at one end close to the supporting tray 6. The end of the rotating roller 31 passes through the mounting plate 613 and is sleeved with an executing bevel gear 34. The lower end of the mounting plate 613 is rotatably arranged with a positioning shaft 35. The outer wall of the positioning shaft 35 is sleeved with a driving bevel gear 36 meshing with the executing bevel gear 34. The positioning shaft 35 and any one of the executing shafts 617 are connected by a belt drive.

[0055] During the specific implementation process, when the transfer shaft 618 drives the execution shaft 617 to rotate counterclockwise, the execution shaft 617 drives the positioning shaft 35 and the driving bevel gear 36 to rotate counterclockwise synchronously, and the driving bevel gear 36 and the execution bevel gear 34 cooperate with each other to drive the rotating roller 31 to rotate, so that the rotating roller 31 rotates toward the side close to the positioning roller 32; after the corrected potato pieces roll down and fall on the upper ends of the rotating roller 31 and the positioning roller 32, the potato pieces with a diameter smaller than the gap between the rotating roller 31 and the positioning roller 32 are directly screened and discharged through the discharge port, and the rotating roller 31 rotates while cooperating with the rotating roller 31 to rotate. The threaded strip 33 can transport the potato nuggets to the side close to the storage basket 4. During this period, since the positioning roller 32 does not rotate, there is a certain friction between the potato nuggets and the positioning roller 32, so that the rotating roller 31 cooperates with the threaded strip 33 to drive the potato nuggets to rotate, so as to facilitate the rotational comprehensive detection of the potato nuggets by the rotating roller 31 and the positioning roller 32. If the potato nuggets are flat or other irregular shapes, they can be effectively screened out by driving them to rotate, thereby ensuring the appearance quality of the screened potato nuggets; finally, the potato nuggets screened out from the storage basket 4 are taken out, and then a new storage basket 4 is replaced.

[0056] Reference Figure 6 and Figure 8As shown, in order to ensure that the rotating roller 31 and the positioning roller 32 can screen out potato pieces of different diameters according to the screening standard, it is necessary to adjust the distance between the rotating roller 31 and the positioning roller 32. Based on this, in the present embodiment, the screening seat 3 on which the rotating roller 31 is installed is in sliding contact with the bottom plate 1, and a receiving opening is provided on the mounting plate 613, in which a displacement plate 37 is movably provided, and one end of the rotating plate close to the supporting tray 6 is rotatably provided on the displacement plate 37, and a pushing cylinder 38 is respectively provided between the mounting plate 613 and the displacement plate 37 and between the two screening seats 3.

[0057] During the specific implementation process, the pushing cylinder 38 is started, and the pushing cylinder 38 drives the displacement plate 37 to move to the side away from the mounting plate 613. At the same time, the screening seat 3 on which the rotating roller 31 is installed moves synchronously, so that the distance between the rotating roller 31 and the positioning roller 32 can be adjusted according to the screening standard. After the adjustment, potato pieces with different diameters can be screened out, which greatly improves the adaptability of the present invention.

[0058] It should be supplemented that an elastic belt is used to connect the execution shaft 617 and the positioning shaft 35 to avoid interference or other effects when the distance between the mounting plate 613 and the displacement plate 37 changes.

[0059] Embodiment 2:

[0060] Reference Fig. 9 As shown, on the basis of the first embodiment, since there may be potato nuggets with too large diameters among the screened potato nuggets, which may also easily lead to inconsistent shapes and sizes of the potato nuggets and affect the overall appearance quality of the potato nuggets, the potato nuggets with too large diameters are screened out during the secondary screening process. Based on this, a corresponding rejection unit 8 is also provided in this embodiment. Specifically, the rejection unit 8 includes a fixed seat 81, and a fixed seat 81 is provided on the upper end of the screening seat 3 on which the positioning roller 32 is installed. An adjusting groove 82 is provided on the side of the fixed seat 81 close to the rotating roller 31, and a supporting plate 83 is slidably provided in the adjusting groove 82, and two threaded rods 84 symmetrically distributed along the length direction are rotatably installed in the adjusting groove 82, and the threaded rod 84 passes through the supporting plate 83 by a threaded connection, and the two threaded rods 84 are connected by a belt drive.

[0061] Furthermore, in the present embodiment, a stabilizing plate 85 is installed on one side of the supporting plate 83 close to the rotating roller 31, a through hole is opened on the stabilizing plate 85, a connecting shaft 86 parallel to the axis of the rotating roller 31 is rotatably installed on the inner wall of the through hole, the connecting shaft 86 is located above the gap between the rotating roller 31 and the positioning roller 32, a plurality of annularly distributed picking columns 88 are evenly installed on the outer wall of the connecting shaft 86 through a support plate 87, and a receiving bucket 89 is provided on the outer wall of the screening seat 3 on which the rotating roller 31 is installed.

[0062] Furthermore, in the present embodiment, a transmission shaft 80 is rotatably provided at one end of the stabilizing plate 85 close to the storage basket 4, the transmission shaft 80 and the rotating shaft are connected via an elastic belt transmission, and the transmission shaft 80 and the connecting shaft 86 are connected via a belt transmission.

[0063] In the specific implementation process, the threaded rod 84 is rotated, and the threaded rod 84 drives the supporting plate 83 to move along the adjustment groove 82 while rotating. The supporting plate 83 drives the stabilizing plate 85, the connecting shaft 86 and multiple picking columns 88 on its outer wall to move synchronously, so that the distance between the picking columns 88 and the rotating roller 31 and the positioning roller 32 can be adjusted, so as to facilitate adaptive adjustment according to the screening standard; during the rotation of the rotating roller 31, the connecting shaft 86 is driven to rotate synchronously through the transmission shaft 80, and the connecting shaft 86 drives multiple picking columns 88 to move circumferentially as a whole through the support plate 87, and the picking columns 88 located below the connecting shaft 86 move toward the side close to the rotating roller 31. During the screening of potato nuggets by the rotating roller 31 and the positioning roller 32, if there are potato nuggets with a diameter greater than the distance between the rotating roller 31 and the picking columns 88, they can be removed by the moving picking columns 88, so that the potato nuggets roll down through the receiving bucket 89, thereby ensuring that the size and shape of the potato nuggets screened out are consistent, and further ensuring the overall appearance quality of the potato nuggets.

[0064] During operation: Step 1: First, start the positioning motor 73. The positioning motor 73 drives the linkage shaft 74 and the linkage ring 75 to rotate as a whole. The linkage ring 75 drives multiple levers 72 to move counterclockwise. Then, the potato pieces to be screened are poured into the upper end of the tray 6. The lever 72 moves the potato pieces counterclockwise, so that the potato pieces roll on the upper end of the tray 6. When the diameter of the potato pieces is small, they will fall downward when passing through the through hole 71, so that the potato pieces that do not meet the standards can be preliminarily screened out.

[0065] Step 2: Start the lifting cylinder 766, which drives the lifting plate 765 and the plug barrel 764 to move upward as a whole, so that the plug barrel 764 is inserted into the through hole 71. At this time, the gap between the outer wall of the plug barrel 764 and the inner wall of the through hole 71 is not enough for the potato pieces to fall out, so the potato pieces with smaller diameters fall out from the inside of the plug barrel 764, so that the diameter of the through hole 71 can be reduced according to the screening standard, so as to facilitate the screening of potato pieces with too small diameters; in addition, when the plug barrel 764 moves upward, it can also push out the potato pieces stuck in the through hole 71, and when the plug barrel 764 moves down and resets, the push column 763 is inserted into the plug barrel 764 to push out the potato pieces stuck in the plug barrel 764, so as to avoid blockage.

[0066] Step 3: After the lever 72 pushes the potato nuggets that meet the standards to the notch, the potato nuggets fall on the upper end of the guide plate 611 and roll along the guide plate 611 to the side close to the screening seat 3. During this period, the potato nuggets can be guided and limited by the correction plate 612 so that the potato nuggets can only roll along the middle part of the guide plate 611 to ensure that the potato nuggets can fall accurately on the screening seat 3.

[0067] At the same time, when the output shaft of the positioning motor 73 rotates, it drives the adapter shaft 618 to rotate synchronously counterclockwise. The adapter shaft 618 drives the conveyor belt 615 to move synchronously through the execution shaft 617. The two conveyor belts 615 rotate in the same direction, so that the opposite sides of the two conveyor belts 615 move in opposite directions. When the potato pieces roll along the guide plate 611, they come into contact with the conveyor belt 615. The two conveyor belts 615 apply opposite friction forces to the potato pieces, which can drive the potato pieces to rotate. The length direction of the elliptical and elongated potato pieces is the same as their rolling direction, and then they roll down along the two correction plates 612, so that the potato pieces can accurately fall on the screening seat 3 and undergo subsequent secondary screening.

[0068] Step 4: When the adapter shaft 618 drives the execution shaft 617 to rotate counterclockwise, the execution shaft 617 drives the positioning shaft 35 and the driving bevel gear 36 to rotate counterclockwise synchronously, and the mutual cooperation between the driving bevel gear 36 and the execution bevel gear 34 can drive the rotating roller 31 to rotate, so that the rotating roller 31 rotates toward the side close to the positioning roller 32; after the potato pieces roll down and fall on the upper ends of the rotating roller 31 and the positioning roller 32, the potato pieces with a diameter smaller than the gap between the rotating roller 31 and the positioning roller 32 are directly screened and discharged through the discharge port, and the rotating roller 31 rotates while cooperating with the threaded strip 33 to transport the potato pieces to the side close to the storage basket 4. During this period, the rotating roller 31 can also drive the potato pieces to rotate through the threaded strip 33, so as to facilitate the rotational comprehensive detection of the potato pieces through the rotating roller 31 and the positioning roller 32. If the potato pieces are flat or have other irregular shapes, they can be effectively screened out by driving them to rotate, thereby ensuring the appearance quality of the screened potato pieces.

[0069] Step 5: Start the pushing cylinder 38, which drives the displacement plate 37 to move to the side away from the mounting plate 613. At the same time, the screening seat 3 on which the rotating roller 31 is installed moves synchronously, so that the distance between the rotating roller 31 and the positioning roller 32 can be adjusted according to the screening standard. After the adjustment, potato pieces with different diameters can be screened out.

[0070] Step 6: During the rotation of the rotating roller 31, the connecting shaft 86 is driven to rotate synchronously through the transmission shaft 80. The connecting shaft 86 drives multiple picking columns 88 to move circumferentially as a whole through the support plate 87, and the picking columns 88 located below the connecting shaft 86 move to the side close to the rotating roller 31. During the screening of potato nuggets by the rotating roller 31 and the positioning roller 32, if there are potato nuggets with a diameter greater than the distance between the rotating roller 31 and the picking columns 88, they can be removed by the moving picking columns 88, so that the potato nuggets roll down through the receiving bucket 89, thereby ensuring that the size and shape of the screened potato nuggets are consistent; finally, the potato nuggets screened out in the storage basket 4 are taken out, and a new storage basket 4 is replaced, and the above steps are repeated to achieve uninterrupted and continuous screening of potato nuggets.

[0071] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0072] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A conveying device for screening potato tubers with excellent properties, comprising a bottom plate (1), a fixing column (2), a screening seat (3) and a storage basket (4) are arranged in sequence along the length direction on the upper end of the bottom plate (1), a supporting tray (6) is installed on the upper end of the fixing column (2) through a bracket (5), and the characteristics are: The tray (6) is provided with a screening unit (7) for preliminary screening of potato tubers. The screening unit (7) comprises a through hole (71) provided on the tray (6). A lever (72) for screening potato tubers with smaller diameters to the through hole (71) is provided on the upper end of the tray (6). A rotating roller (31) for secondary screening of the potato tubers after preliminary screening is rotatably provided on the screening seat (3).

2. A conveying device for screening potato tubers with excellent properties according to claim 1, characterized in that: The screening unit (7) further comprises a positioning motor (73) mounted on the upper end of the fixed column (2); a linkage shaft (74) connected to the output shaft of the positioning motor (73) is fixedly provided through the middle of the support tray (6); and the output shaft of the positioning motor (73) is connected to the linkage shaft (74); A linkage ring (75) is fixedly sleeved on the outer wall of the linkage shaft (74), and a plurality of equally spaced shifting rods (72) are evenly mounted on the outer wall of the linkage ring (75). The lower ends of the shifting rods (72) are in sliding contact with the top of the bearing tray (6), and a receiving plate (721) is mounted on one side of the shifting rod (72) away from the linkage ring (75) and close to the moving direction thereof.

3. A conveying device for screening potato tubers with excellent properties according to claim 1, characterized in that: The top of the tray (6) has an upwardly extending folded edge, one end of the lever (72) away from the linkage ring (75) is in sliding contact with the folded edge, the side of the tray (6) away from the screening seat (3) gradually tilts downward, and a plurality of through holes (71) are evenly provided on the side of the tray (6) away from the screening seat (3), an auxiliary component (76) for adjusting the diameter of the through holes (71) is installed on the bottom plate (1), and a notch is provided on the side of the tray (6) close to the screening seat (3), and a correction unit (61) for guiding potato nuggets to the screening seat (3) is installed at the notch.

4. A conveying device for screening potato tubers with excellent properties according to claim 3, characterized in that: The auxiliary component (76) comprises a support plate (761) mounted on the upper end of the base plate (1), the support plate (761) being located on a side of the fixed column (2) away from the screening seat (3), a fan-shaped plate (762) being mounted on the upper end of the support plate (761), a plurality of top columns (763) corresponding to the positions of the through holes (71) being mounted on the upper end of the fan-shaped plate (762), a plug cylinder (764) being slidably sleeved on the outer wall of the top column (763), a lifting plate (765) being commonly mounted between the plurality of plug cylinders (764), a plurality of lifting cylinders (766) being mounted on the lower end of the fan-shaped plate (762), the telescopic ends of the lifting cylinders (766) passing through the fan-shaped plate (762) and then connected to the lifting plate (765).

5. A conveying device for screening potato tubers with excellent properties according to claim 3, characterized in that: The correction unit (61) comprises a guide plate (611) mounted at the lower end of the notch, two correction plates (612) are symmetrically mounted on the upper end of the guide plate (611) along the width direction, the correction plate (612) is inclined from the side close to the support tray (6) to the side away from the middle of the guide plate (611), the upper end of the bottom plate (1) is mounted with a mounting plate (613) located between the fixing column (2) and the screening seat (3), and an actuator assembly (614) is arranged between the mounting plate (613) and the correction plate (612).

6. A conveying device for screening potato tubers with excellent properties according to claim 5, characterized in that: The actuator assembly (614) comprises a conveyor belt (615), and two correction plates (612) are provided with receiving grooves on opposite sides close to the supporting tray (6), and a conveyor belt (615) is movably installed inside the receiving groove. The outer wall of the conveyor belt (615) is provided with a plurality of positioning strips which are arranged equidistantly and distributed longitudinally, and two limit strips (616) are symmetrically installed on the opposite sides of the two correction plates (612), and two actuator shafts (617) for controlling the rotation of the conveyor belt (615) are rotatably installed inside the correction plates (612).

7. A conveying device for screening potato tubers with excellent properties according to claim 5, characterized in that: The actuator assembly (614) also includes an adapter shaft (618) rotatably inserted into the mounting plate (613); the adapter shaft (618) and the output shaft of the positioning motor (73) are connected via a belt transmission; and any one of the actuator shafts (617) in each correction plate (612) passes through the mounting plate (613) and is connected to the adapter shaft (618) via a belt transmission.

8. The conveying device for screening potato tubers with excellent properties according to claim 1, characterized in that: The screening seat (3) has two symmetrically distributed along the width direction of the bottom plate (1), and rotating rollers (31) and positioning rollers (32) are respectively rotated inside the two screening seats (3). The rotating rollers (31) and the screening seat (3) are rotationally matched, and the side of the rotating rollers (31) and the positioning rollers (32) away from the supporting tray (6) is located above the storage basket (4). The outer wall of the rotating roller (31) is provided with a thread strip (33), and the spiral direction of the thread strip (33) is opposite to the rotation direction of the rotating roller (31).

9. A conveying device for screening potato tubers with excellent properties according to claim 5, characterized in that: The ends of the rotating roller (31) and the positioning roller (32) close to the supporting tray (6) are both rotatably arranged on the outer wall of the mounting plate (613); the end of the rotating roller (31) passes through the mounting plate (613) and is sleeved with an execution bevel gear (34); a positioning shaft (35) is rotatably arranged at the lower end of the mounting plate (613); the outer wall of the positioning shaft (35) is sleeved with a driving bevel gear (36) meshing with the execution bevel gear (34); the positioning shaft (35) and any one of the execution shafts (617) are connected via a belt transmission.

10. A conveying device for screening potato tubers with excellent properties according to claim 9, characterized in that: The screening seat (3) on which the rotating roller (31) is mounted is in sliding contact with the bottom plate (1); a receiving opening is provided on the mounting plate (613); a displacement plate (37) is movably arranged in the receiving opening; one end of the rotating plate close to the supporting tray (6) is rotatably arranged on the displacement plate (37); and a pushing cylinder (38) is respectively arranged between the mounting plate (613) and the displacement plate (37) and between the two screening seats (3).

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