A spherically shaped fruit and vegetable screening device
The spherical fruit and vegetable screening device, designed with a multi-stage screening mechanism and a differential slope of the drive shaft, solves the problems of screen clogging and low sorting efficiency, achieving high-efficiency vegetable grading and reducing damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEZE UNIV
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-29
AI Technical Summary
The screens of existing screening equipment are prone to clogging, resulting in low efficiency in sorting spherical fruits and vegetables by size.
It adopts a multi-stage screening mechanism, with the screen holes of each stage increasing in size along the discharge direction. Combined with the slope difference design of the drive shaft, it avoids the accumulation of fruits and vegetables. It uses a rolling screening belt to screen fruits and vegetables, and the start and stop of each screening belt is controlled by an independent motor.
It effectively avoids sieve clogging, improves sieving efficiency, reduces fruit and vegetable damage, adapts to the sorting needs of different fruits and vegetables, and achieves efficient fruit and vegetable grading.
Smart Images
Figure CN224293957U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fruit and vegetable technology, specifically to a spherical fruit and vegetable screening device. Background Technology
[0002] my country's fruit and vegetable industry is enormous. By grading fruits and vegetables according to their quality before they are sold, better market prices and economic benefits can be obtained, thereby increasing the income of those involved in the fruit and vegetable industry. Currently, mesh fruit and vegetable sorting machines are widely used for screening fruits and vegetables. The grading height of the mesh fruit and vegetable sorting machine has a flexible grading adjustment mechanism, which can be adjusted according to the connected supporting equipment, so that it can be connected and used with different related equipment according to needs. The precise size of the mesh can improve the grading accuracy of fruits and vegetables. For example, Bao Zongxin, Zhang Hongjun, Zhao Shuang, et al. Research on Mesh Onion Sorting Machine [J]. Journal of Qiqihar University (Natural Science Edition), 2018, 34(04): 57-60. In the article, a rubber belt with mesh is used to screen and grade fruits and vegetables. The rubber material can avoid friction with the onion as much as possible, thereby reducing the damage to the onion skin during sorting. However, when the rubber screen passes through the transmission roller, although the transmission roller can squeeze out the onion stuck in the screen hole, thereby restoring the filtration characteristics of the screen hole, the screening surface of the screen is set at an angle upward, which causes many onions to be unable to pass over the highest point of the screen normally. The onions accumulate on the screening surface and roll back and forth. Utility Model Content
[0003] The present invention aims to provide a spherical fruit and vegetable screening device to solve the problems of easy clogging of screens and low efficiency in sorting spherical fruits and vegetables by size in current screening equipment.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: a spherical fruit and vegetable screening device, comprising: a screening frame, a screening mechanism, and a collecting mechanism. The screening mechanism is located on the top of the screening frame, and the screening mechanism is located inside the screening mechanism. Multiple screening mechanisms are sequentially arranged inside the screening frame, each with the same structure. The discharge end of the previous screening mechanism is located above the feed end of the next screening mechanism, and the screen openings of the multiple screening mechanisms increase sequentially along the discharge direction. The screening mechanism includes: a screening belt, a first drive shaft, a second drive shaft, and a third drive shaft. The machine comprises three drive shafts, a tension shaft, and a screening motor. The tension shaft, the first drive shaft, the second drive shaft, and the third drive shaft are parallel to each other and rotatably mounted on the screening frame. The first drive shaft, the second drive shaft, and the third drive shaft are sequentially and parallel to each other on the top of the screening frame, with the heights of the first drive shaft, the second drive shaft, and the third drive shaft gradually increasing. The height of the second drive shaft is adjustable. The screening belt is mounted on the outside of the tension shaft, the first drive shaft, the second drive shaft, and the third drive shaft. The screening motor drives the third drive shaft to rotate. The collection mechanism is located inside the screening belt.
[0005] The principle of this scheme is as follows: The screening motor is started, driving the third drive shaft to rotate. The screening belt rotates under the action of the tension shaft, the first drive shaft, the second drive shaft, and the third drive shaft, screening fruits and vegetables. After entering the screening belt, the fruits and vegetables first move slowly upwards between the first and second drive shafts. Due to the slope difference between the first and second drive shafts, and because the fruits and vegetables are spherical, they will roll downwards. Smaller fruits and vegetables fall through the sieve holes of the current screening belt into the collection mechanism below. The fruits and vegetables continue to move upwards on the screening belt between the second and third drive shafts for further screening. Subsequently, larger fruits and vegetables fall into the next stage screening mechanism. The slope difference between the first and second drive shafts prevents fruits and vegetables from accumulating on the screening belt, avoiding clogging of the sieve holes and improving screening efficiency.
[0006] Advantages of this solution: This solution features a multi-stage screening mechanism, with each screen equipped with an independent motor, allowing for individual control of the start and stop of each screening belt; the slope difference between the first and second drive shafts prevents fruits and vegetables from accumulating on the screening belt, avoiding clogging of the screen holes and improving screening efficiency; the rotating screening belt prevents fruits and vegetables from clogging the screen holes; the modular screen design allows for replacement as needed, adapting to the damage sensitivity requirements of different fruits and vegetables such as citrus, dates, garlic, onions, and potatoes, while ensuring sorting efficiency and energy conservation; furthermore, the height of the second drive shaft is adjustable, allowing for adjustment of the rolling situation for different types of spherical fruits and vegetables. If the spherical shape of the fruits and vegetables is less than ideal, the height of the second drive shaft can be adjusted appropriately to achieve better rolling screening results.
[0007] Preferably, the collection mechanism includes: a collection conveyor belt, a first conveyor pulley, a first conveyor motor, a second conveyor pulley, and a second conveyor motor; the first conveyor motor drives the first conveyor pulley to rotate, and the second conveyor motor drives the second conveyor pulley to rotate; the first and second conveyor pulleys are respectively mounted on both sides of the screening frame, and the collection conveyor belt is mounted on the first and second conveyor pulleys. The first conveyor motor drives the first conveyor pulley to rotate, and the second conveyor motor drives the second conveyor pulley to rotate, causing the collection conveyor belt to rotate, which is used to collect the fruits and vegetables screened by the conveyor belt.
[0008] Preferably, a stop is provided at the gap between the third drive shaft and the first drive shaft of two adjacent screening mechanisms. Since there is a height difference between the third drive shaft and the first drive shaft, this height difference will create a gap between them. The stop fills the gap formed by the height difference of the drive shafts between each two screening mechanisms, preventing fruits and vegetables from leaking out through this gap.
[0009] Preferably, the stop is a rotating shaft, and both ends of the rotating shaft are rotatably connected to the screening machine frame.
[0010] Preferably, the system also includes a transition plate, which is inclinedly disposed at the feed end of the first-stage screening mechanism. The transition plate buffers the fruits and vegetables, reducing damage to them, and simultaneously prevents them from leaking out from the gap between the screening belt and the feed conveyor belt.
[0011] Preferably, the system also includes a blower mechanism, which comprises a blower cylinder, a fan, and a fan cover. The blower cylinder is installed above the sorting device, and the fan is symmetrically installed at the openings at both ends of the blower cylinder. An air outlet is provided in the middle of the blower cylinder, facing the screening mechanism. Air is supplied to the sorting device through the fan and the blower cylinder to further remove impurities such as old peels that have fallen off the surface of the fruits and vegetables.
[0012] Preferably, the air outlet faces the feed end of the first-stage screening mechanism. Having the air outlet facing the feed end of the sorting device is more beneficial for subsequent screening of fruits and vegetables.
[0013] Preferably, the top of the second drive shaft is provided with a groove that matches the screening belt mounted thereon. By setting the groove to match the fruits and vegetables, the portion of the fruits and vegetables that is embedded in the screen holes when passing through the conveyor belt can be accommodated by the groove, thereby preventing the second drive shaft from pushing the fruits and vegetables out, and allowing the fruits and vegetables to move smoothly onto the screening belt between the second drive shaft and the third drive shaft.
[0014] Preferably, the diameter of the two ends of the second drive shaft is larger than the diameter of its middle part, so that the middle section of the drive shaft does not contact the fruits and vegetables, thereby preventing the fruits and vegetables from being pushed out of the sieve holes and rolling back onto the screening belt between the second drive shaft and the first drive shaft, thus improving screening efficiency.
[0015] Preferably, the screening belt is made of rubber. This minimizes friction with fruits and vegetables, thereby reducing damage to their surface during sorting. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.
[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A top-down view.
[0018] Figure 3 This is a partial structural schematic diagram of an embodiment of the present utility model.
[0019] Figure 4 This is a partial structural schematic diagram of an embodiment of the present utility model.
[0020] Figure 5 This is a partial structural diagram of the screening mechanism and the collection mechanism according to an embodiment of the present utility model. Detailed Implementation
[0021] The following detailed description illustrates the specific implementation method:
[0022] The reference numerals in the accompanying drawings include: screening frame 11, screening frame 12, screening mechanism 13, screening belt 131, first drive shaft 132, second drive shaft 133, third drive shaft 134, tension shaft 135, screening motor 136, collecting mechanism 14, collecting conveyor belt 141, first conveyor pulley 142, first conveyor motor 143, second conveyor pulley 144, and second conveyor motor 145.
[0023] Example 1:
[0024] A spherical fruit and vegetable screening device includes: Figures 1-5 As shown, the screening frame 11, screening frame 12, screening mechanism 13 and collection mechanism 14 are included. The screening frame 12 is fixed on the top of the frame, and the screening mechanism 13 is located inside the screening frame 12. The screening frame 11 is hollow inside and is used to install the screening mechanism 13 and the collection mechanism 14.
[0025] The sorting device includes a transition plate at its feed end, which is inclined and positioned above the screening belt 131, with its bottom in contact with the belt. The transition plate serves to transport the fruits and vegetables from the feed conveyor belt to the screening belt 131 of the sorting device, buffering the vegetables and reducing damage, while also preventing them from leaking out through the gap between the screening belt 131 and the feed conveyor belt. The transition plate has evenly spaced perforations, allowing air to circulate and reducing the adhesion between the fruits and vegetables and the plate surface, preventing them from sticking to the transition plate.
[0026] The inner side of the screening frame 12 is provided with multiple screening mechanisms 13 in sequence. The discharge end of the previous screening mechanism 13 is located above the next screening mechanism 13. Each screening mechanism 13 has the same structure. The screen holes of the screening belt 131 of each screening mechanism 13 gradually increase along the discharge direction, which can complete the screening of fruits and vegetables of various sizes with high screening efficiency. In this embodiment, garlic or onions are screened, and a total of 5 screening mechanisms 13 are set.
[0027] A baffle is provided between two adjacent screening mechanisms 13 to fill the gap formed by the height difference between the two screening mechanisms 13, so as to prevent fruits and vegetables from leaking out of this gap. In this solution, the baffle is a rotating shaft, and the two ends of the rotating shaft are rotatably connected to the screening frame 11.
[0028] The screening mechanism 13 includes: a screening belt 131, a first drive shaft 132, a second drive shaft 133, a third drive shaft 134, a tensioning shaft 135, and a screening motor 136.
[0029] Tensioning shaft 135, first drive shaft 132, second drive shaft 133, and third drive shaft 134 are parallel to each other. The first drive shaft 132, second drive shaft 133, and third drive shaft 134 are sequentially and parallelly arranged on the top of the screening frame 11, with their heights gradually increasing. The slope difference between the second drive shaft 133 and the third drive shaft 134 is smaller than the slope difference between the first drive shaft 132 and the second drive shaft 133. Tensioning shaft 135 is located at the bottom of the screening frame 11. Screening belt 131 is installed on the outside of tensioning shaft 135, first drive shaft 132, second drive shaft 133, and third drive shaft 134. Collection mechanism 14 is located inside screening belt 131. The screening belt 131 rotates under the action of the tension shaft 135, the first drive shaft 132, the second drive shaft 133, and the third drive shaft 134 to screen fruits and vegetables. After the fruits and vegetables enter the screening belt 131, they first move slowly upward on the screening belt 131 between the first drive shaft 132 and the second drive shaft 133. Due to the slope difference formed by the first drive shaft 132 and the second drive shaft 133, the fruits and vegetables will roll downward. Smaller fruits and vegetables fall into the collection mechanism 14 through the screen holes of the current screening belt 131, while larger fruits and vegetables continue to be screened upward and moved to the third drive shaft 134 until they fall into the next stage screening mechanism 13. In this scheme, the slope difference formed by the first drive shaft 132 and the second drive shaft 133 avoids the accumulation of fruits and vegetables on the screening belt 131, avoids clogging of the screen holes, and improves screening efficiency.
[0030] The screening motor 136 is fixedly mounted on the frame. The output shaft of the screening motor 136 is connected to the first transmission shaft 132 through pulleys and belts. The specific transmission structure is existing technology and will not be described in detail here.
[0031] In this design, the belt tensioning shaft structure maintains optimal belt tension through adjustable position changes, ensuring efficient power transmission and extending system life. The belt tensioning shaft structure is mounted on the screening frame 11. The tensioning shaft 135 contains a roller, with both ends fixed to a tensioning seat. A rubber sleeve is fitted onto the roller, and both ends are bolted to the tensioning seat. In this embodiment, a vertical through groove is provided on the tensioning seat, and both ends of the roller are bolted to the through groove. Specific installation methods are referenced from existing technology and will not be described in detail here. A rubber roller is provided on the tensioning shaft 135 for contact with the screening belt 131.
[0032] The first drive shaft 132 is rotatably mounted on the screening frame 11 at both ends. Specifically, a rhomboid seat is provided on the screening frame 11, and a connecting hole is opened in the middle of the rhomboid seat. The first drive shaft 132 is rotatably connected to the connecting hole.
[0033] The second drive shaft 133 is rotatably mounted on the screening frame 11 at both ends. Specifically, the second drive shaft 133 is fixed to the screening frame 11 by bearing seats and bearings. Furthermore, by adjusting the height of the second drive shaft 133 using structures such as telescopic hydraulic cylinders, the ratio of the two-stage slope can be quickly changed. This allows for adjustment of the tumbling process for different types of spherical fruits and vegetables. If the spherical shape of the fruits and vegetables is less than ideal, the height of the second drive shaft 133 can be appropriately adjusted to achieve a better tumbling screening effect.
[0034] The third drive shaft 134 is rotatably mounted on the screening machine frame 11 at both ends. Specifically, a heightening frame is set at the corresponding position of the screening machine frame 11, and then a bearing seat and a bearing are installed on the heightening frame. The third drive shaft 134 is fixed on the screening machine frame 11 by the heightening frame, the bearing seat and the bearing. The bearing seat is raised at the corresponding position by the heightening frame, thereby raising the height of the corresponding drive shaft.
[0035] Rubber cylinders are provided on the tensioning shaft 135, the first transmission shaft 132, the second transmission shaft 133, and the third transmission shaft 134. The rubber cylinders on the third transmission shaft increase friction, facilitating the transport of fruits and vegetables to the next stage screening mechanism 13.
[0036] Among them, the screening belt 131 is made of rubber to minimize friction with fruits and vegetables, thereby reducing damage to the surface of fruits and vegetables during sorting.
[0037] The second drive shaft 133 has a groove at its top that matches the screening belt 131 mounted thereon. Since the second drive shaft 133 is higher than the first drive shaft 132, when fruits and vegetables pass through the top of the second drive shaft 133, the higher part of the top of the second drive shaft 133 can easily push the fruits and vegetables out, causing them to return to the screening belt 131 between the first drive shaft 132 and the second drive shaft 133. This causes the fruits and vegetables to accumulate on the screening belt 131, affecting the screening effect. In this solution, a groove is set to match the fruits and vegetables, so that when the fruits and vegetables pass through the conveyor belt, part of them can be accommodated by the groove, preventing the second drive shaft 133 from pushing the fruits and vegetables out, and allowing the fruits and vegetables to move smoothly to the screening belt 131 between the second drive shaft 133 and the third drive shaft 134.
[0038] The collection mechanism 14 includes: a collection conveyor belt 141, a first conveyor pulley 142, a first conveyor motor 143, a second conveyor pulley 144, and a second conveyor motor 145. The first conveyor motor 143 drives the first conveyor pulley 142 to rotate, and the second conveyor motor 145 drives the second conveyor pulley 144 to rotate. The first conveyor pulley 142 and the second conveyor pulley 144 are respectively installed on the left and right sides of the frame, that is, the feed end and the discharge end of the collection conveyor belt 141. The collection conveyor belt 141 is installed on the first conveyor pulley 142 and the second conveyor pulley 144. The collection conveyor belt 141 is used to collect the fruits and vegetables screened by the conveyor screening belt 131. The discharge end of the collection conveyor belt 141 is correspondingly set with a weighing device. The weighing device is existing technology and will not be described in detail here. The weighing device facilitates the weighing and packaging of the screened fruits and vegetables.
[0039] In this design, the beginning and end of the screening belt 131 are connected by a snap-fit mechanism, which makes it easy to replace the screening belt 131 and adapt it to fruits and vegetables of different sizes.
[0040] In this embodiment, both the first conveyor pulley 142 and the second conveyor pulley 144 are rollers. The first conveyor motor 143 is connected to the first conveyor pulley 142 via pulleys and belts; the specific transmission structure is existing technology. A U-shaped frame is also symmetrically arranged on the screening frame 11, with the opening of the U-shaped frame facing the feed end or discharge end of the sorting device. The two ends of the rollers of the first conveyor pulley 142 are rotatably connected to the U-shaped frame, which is used to stabilize the first conveyor pulley 142. The output shaft of the second conveyor motor 145 is connected to the second conveyor pulley 144. A base plate is symmetrically arranged on the screening frame 11, and the base plate is fixed to the screening frame 11 by bolts. The two ends of the second conveyor pulley 144 are rotatably mounted on the corresponding base plate.
[0041] The first conveyor motor 143 and the second conveyor motor 145 are both variable frequency motors, which allows the motor controlling the collection conveyor belt 141 to be speed-adjustable and has a multi-level calibration function. Specifically, different levels of calibration can be achieved by setting different speeds to meet the packaging requirements of different specifications of fruits and vegetables. By adjusting the speed of the collection conveyor belt 141, the weight of fruits and vegetables loaded in the material bag on the weighing mechanism within a certain period of time can be controlled, and different fruit and vegetable products and packaging requirements of different specifications from 0 to 50 kg can be quickly switched.
[0042] The last screening belt 131 is equipped with a collection device at its end, which is used to collect fruits and vegetables with the largest particle size. The collection device specifically includes an inclined buffer plate and a collection plate. The collection plate is connected to the bottom of the buffer plate. The inlet end of the collection plate is provided with a long strip-shaped through hole for further removal of impurities. The outlet end of the collection plate is provided with a collection hole that matches the particle size of the fruits and vegetables. The corresponding fruits and vegetables fall into the corresponding material bag through the collection hole and are collected.
[0043] It also includes a blower mechanism, specifically comprising: a blower cylinder, a fan, and a fan cover. The blower cylinder is installed above the sorting device, and the fan is symmetrically installed at the openings at both ends of the blower cylinder. An air outlet is located in the middle of the blower cylinder, facing the sorting device. Air is supplied to the sorting device through the fan and the blower cylinder to further remove impurities such as old peels that have fallen from the surface of the fruits and vegetables. Specifically, the air outlet facing the feed end of the sorting device is more conducive to subsequent screening of the fruits and vegetables.
[0044] The blower cover is located on the outside of the blower, reducing inlet vortex and allowing airflow to enter the blower casing axially. The blower cover and blower casing are connected by detachable means such as bolts and snap-fit connections, which facilitates equipment maintenance.
[0045] The blower cylinder has a flat outlet. This allows for more effective airflow guidance, reduces turbulence and separation, maintains airflow stability and continuity, and enables impurities to be separated more evenly. The length of the outlet matches the length of the screening belt 131 in the sorting device.
[0046] The specific implementation process is as follows:
[0047] Fruits and vegetables enter the screening belt 131 of the first-stage screening mechanism 13 from the transition plate. The transition plate buffers the fruits and vegetables, reducing damage. The screening motor 136 is turned on, and the screening belt 131 rotates under the action of the tension shaft 135, the first drive shaft 132, the second drive shaft 133, and the third drive shaft 134, screening the fruits and vegetables. After entering the screening belt 131, the fruits and vegetables first move slowly upwards between the first drive shaft 132 and the second drive shaft 133. During this process, due to the movement of the first drive shaft 132 and the second drive shaft 133... Due to the slope difference between the two sides, fruits and vegetables will slide downwards under inertia. Smaller fruits and vegetables fall into the collection mechanism 14 through the sieve holes of the current screening belt 131, while larger fruits and vegetables continue to move upwards and be screened until they fall into the next screening mechanism 13. Then, the fruits and vegetables enter between the second drive shaft 133 and the third drive shaft 134, and then enter the next screening mechanism 13. The above process is repeated until the screening of fruits and vegetables is completed. The fruits and vegetables fall from the sieve holes of the screening belt 131 onto the collection conveyor belt 141 and are transported to the corresponding equipment for collection and packaging.
[0048] This solution uses a rolling screening belt 131 to screen fruits and vegetables, preventing them from clogging the screen holes. The slope difference between the first drive shaft 132 and the second drive shaft 133 prevents fruits and vegetables from piling up on the screening belt 131, thus avoiding clogging and improving screening efficiency. A transition plate is used to transport the fruits and vegetables, reducing damage during the feeding process. A groove is provided on the second drive shaft 133 to match the fruits and vegetables, ensuring that some of the vegetables are positioned within the groove as they pass through the conveyor belt, preventing the second drive shaft 133 from pushing them out and allowing them to move smoothly onto the screening belt 131 between the second drive shaft 133 and the third drive shaft 134.
[0049] Example 2:
[0050] The difference between this embodiment and Embodiment 1 is that in this embodiment, the diameter of the two ends of the second drive shaft 133 is larger than the diameter of its middle part, so that the middle section of the drive shaft does not contact the fruits and vegetables. This avoids the fruits and vegetables from rolling back onto the screening belt 131 between the second drive shaft 133 and the first drive shaft 132 after being pushed out of the sieve holes. Instead, the fruits and vegetables move smoothly through the grooves onto the screening belt 131 between the second drive shaft 133 and the third drive shaft 134, thereby improving the screening efficiency.
[0051] The above descriptions are merely embodiments of this utility model, and common technical solutions and / or characteristics known in the scheme are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A spherical fruit and vegetable screening device, characterized in that, include: The screening machine includes a screening frame, a screening mechanism, and a collection mechanism. The screening frame is located on top of the screening machine, and the screening mechanism is located inside the screening frame. Multiple screening mechanisms are arranged sequentially inside the screening frame. Each screening mechanism has the same structure. The discharge end of the previous screening mechanism is located above the feed end of the next screening mechanism. The screen holes of the multiple screening mechanisms increase sequentially along the discharge direction. The screening mechanism includes: a screening belt, a first drive shaft, a second drive shaft, a third drive shaft, a tension shaft, and a screening motor; The tensioning shaft, first drive shaft, second drive shaft, and third drive shaft are parallel to each other and rotatably mounted on the screening frame. The first drive shaft, second drive shaft, and third drive shaft are sequentially and parallelly mounted on the top of the screening frame, with their heights gradually increasing. The height of the second drive shaft is adjustable. The screening belt is mounted on the outside of the tensioning shaft, first drive shaft, second drive shaft, and third drive shaft. The screening motor drives the third drive shaft to rotate. The collecting mechanism is located inside the screening belt. The top of the second drive shaft has a groove that matches the screening belt mounted on it.
2. The spherical fruit and vegetable screening device according to claim 1, characterized in that: The collection mechanism includes: a collection conveyor belt, a first conveyor pulley, a first conveyor motor, a second conveyor pulley, and a second conveyor motor; the first conveyor motor is used to drive the first conveyor pulley to rotate, and the second conveyor motor is used to drive the second conveyor pulley to rotate; the first conveyor pulley and the second conveyor pulley are respectively installed on both sides of the screening frame, and the collection conveyor belt is installed on the first conveyor pulley and the second conveyor pulley.
3. The spherical fruit and vegetable screening device according to claim 1, characterized in that: A stop is provided in the gap between the third drive shaft and the first drive shaft of the two adjacent screening mechanisms.
4. The spherical fruit and vegetable screening device according to claim 3, characterized in that: The stop is a rotating shaft, and both ends of the rotating shaft are rotatably connected to the screening machine frame.
5. The spherical fruit and vegetable screening device according to claim 1, characterized in that: It also includes a transition plate, which is inclinedly disposed at the feed end of the first-stage screening mechanism.
6. The spherical fruit and vegetable screening device according to claim 1, characterized in that: It also includes a blower mechanism, which includes a blower cylinder, a fan and a fan cover. The blower cylinder is installed above the sorting device, and the fan is symmetrically installed at the openings at both ends of the blower cylinder. An air outlet is provided in the middle of the blower cylinder, and the air outlet faces the screening mechanism.
7. The spherical fruit and vegetable screening device according to claim 6, characterized in that: The air outlet faces the feed end of the first-stage screening mechanism.
8. The spherical fruit and vegetable screening device according to claim 1, characterized in that: The diameter of the two ends of the second drive shaft is larger than the diameter of its middle part.
9. The spherical fruit and vegetable screening device according to claim 1, characterized in that: The screening belt is made of rubber.