Spherical hard fruit and vegetable grading conveying device

Abstract

The utility model discloses a spherical hard fruit and vegetable grading conveying device which comprises a machine base, an adjustable platen, a roller, supporting roller sets, a driving assembly and a discharging hopper, the adjustable platen is obliquely installed on the machine base through an adjusting mechanism, the roller is supported on the adjustable platen through the front supporting roller set and the rear supporting roller set, and the central axis of the roller is parallel to the top face of the adjustable platen; the driving assembly drives the roller to rotate around the central axis on the supporting roller set. A first material leakage area and a second material leakage area are sequentially arranged on the roller wall of the roller from front to back, the first material leakage area and the second material leakage area are circular ring roller sections and are uniformly provided with material leakage holes, and the diameter of the material leakage holes in the range of the first material leakage area is smaller than that of the material leakage holes in the range of the second material leakage area; the discharging hoppers are installed on the adjustable platen, the feeding ends of the two discharging hoppers are arranged on the lower portion of the first material leakage area and the lower portion of the second material leakage area in a sleeving mode respectively, and the discharging ends of the discharging hoppers extend out of the side wall of the adjustable platen. The device reduces the equipment investment cost and can adapt to large-batch sorting and conveying operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to fruit and vegetable sorting technical field especially, relate to a kind of spherical hard fruit and vegetable grading conveyor. BACKGROUND

[0002] In prior art, spherical fruits and vegetables such as apples and citrus are measured by using a camera-equipped measuring instrument. The shape size of each fruit or vegetable is measured, and the grade is determined automatically according to the measurement value. Then, the fruits and vegetables are arranged in a row and pass through a narrow conveyor belt one by one. Different conveying ports are used to output fruits and vegetables of different grades by opening the gate and using the cylinder to push. For example, the patents with announcement numbers JPH08252541A and KR100381144B1 use this technical solution. However, this camera vision judgment method has high dependence on the precision of the equipment. It often requires good hardware and software equipment to meet the requirements, and the cost of the equipment is high. At the same time, spherical fruits and vegetables such as potatoes, walnuts, jujubes, eggplants, apples often need to be processed in large quantities. The camera vision judgment method described above often has low efficiency and cannot meet the needs of batch grading and conveying.

[0003] Therefore, it is necessary to develop a spherical hard fruit and vegetable grading conveyor to solve the above problems. SUMMARY

[0004] The utility model aims at providing a spherical hard fruit and vegetable grading conveyor, which reduces the cost of equipment investment and can adapt to large-scale sorting and conveying operations.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The spherical hard fruit and vegetable grading conveyor includes a base, an adjustable table, a roller, a support roller set, a drive assembly and a discharge hopper. The adjustable table is inclinedly installed on the base through an adjusting mechanism. The roller is supported on the adjustable table through two groups of front and rear support roller sets. The central axis of the roller is parallel to the top surface of the adjustable table. The drive assembly drives the roller to rotate around the central axis on the support roller set. First and second discharge areas are sequentially arranged on the roller wall from front to back. Both the first and second discharge areas are circular ring segments and are uniformly provided with discharge holes for discharging spherical hard fruits and vegetables. The diameter of the discharge holes in the first discharge area is smaller than that in the second discharge area. The discharge hopper is installed on the adjustable table. The inlet ends of the two discharge hoppers are respectively sleeved on the lower parts of the first and second discharge areas. The discharge ends of the discharge hoppers protrude from the side walls of the adjustable table.

[0007] Further, the adjusting mechanism comprises a first pin shaft seat and a push-pull assembly, the first pin shaft seat is arranged at the rear end of the top surface of the base and is connected with the pin shaft of the supporting lug at the bottom of the rear end of the adjustable table board, and the push-pull assembly is installed at the front end of the top surface of the base.

[0008] Further, the push-pull assembly comprises a second pin shaft seat, a screw rod and a waist-shaped hole, the second pin shaft seat is arranged at the front end of the top surface of the base, the screw rod is a fish-eye screw rod and the bottom end fish-eye hole is sleeved on the pin shaft of the second pin shaft seat, and the waist-shaped hole is arranged at the front end of the adjustable table board and is along the length direction of the adjustable table board, the screw rod passes through the waist-shaped hole and is locked by the lock nut in the up-down direction.

[0009] Further, the supporting roller group comprises a V-shaped support and rollers, the two rollers are rotatably installed on the inner side wall of the V-shaped support and rollingly support the roller drum, and the roller drum is provided with a recessed rolling way at the position in contact with the rollers.

[0010] Further, the driving assembly comprises a large gear ring, a small gear and a speed reduction motor, the large gear ring is coaxially fixedly connected to the middle position of the outer wall of the roller drum, the speed reduction motor is installed on the adjustable table board through a support, the output shaft of the speed reduction motor is installed with the small gear, and the small gear is oppositely engaged with the large gear ring.

[0011] Further, the side plate of the discharge hopper is wrapped outside the first material leakage area or the second material leakage area and the gap is not greater than 5 mm.

[0012] Further, the top of the discharge hopper is further provided with a blocking plate, the blocking plate is an arc-shaped plate, the gap between the blocking plate and the outer wall of the roller drum is not greater than 3 mm, and the width of the blocking plate is greater than the diameter of the material leakage hole.

[0013] Further, the utility model further comprises a feeding hopper, the feeding hopper is installed above the front end of the adjustable table board through a supporting rod, and the feeding hopper is arranged in an inclined mode and the bottom end is inserted into the high end of the roller drum.

[0014] Compared with the prior art, the utility model has the beneficial technical effects that:

[0015] The utility model discloses a spherical hard fruit and vegetable grading conveying device, through setting up first material leakage area and second material leakage area on the drum of inclination, spherical hard fruit and vegetable material is put into from the high end of drum, and spherical hard fruit and vegetable material flows from top to bottom in the drum of continuous rotation, and small fruit with smaller diameter leaks in first material leakage area, and medium fruit with larger diameter leaks in second material leakage area and is output by corresponding discharge hopper, and big fruit with very large diameter is output at the bottom end of drum finally, can continuously put in a large amount, and is suitable for batch processing material. Through the adjusting mechanism support adjustable platform, the inclination angle of adjustable platform and drum can be adjusted, and then the discharging speed requirement of different materials is realized. The utility model discloses spherical hard fruit and vegetable grading conveying device reduces equipment investment cost and can adapt to large batch sorting conveying operation.

[0016] In addition, by the setting of the first pin shaft seat and the push-pull assembly, the push-pull assembly can adjust the inclination angle of the adjustable platform by jacking up or pulling down the front end of the adjustable platform away from the first pin shaft seat; by the adjustment mode of the screw cooperating with the waist-shaped hole adopted by the push-pull assembly, fine and accurate adjustment can be conveniently performed, and the structure has good stability. By the support of the drum by the two V-shaped supports and the four rollers, and the setting of the groove type rolling way, axial movement of the drum is prevented. By the drive assembly composed of the large gear ring, the pinion and the speed reducer motor, the gear transmission ratio is stable, and the rotating speed of the drum can be accurately controlled. By the setting of the side plate, the spherical hard fruit and vegetable falling out of the material leakage hole can be prevented from falling outward from the side, so that the output of the spherical hard fruit and vegetable to the discharge end on one side is ensured; by the setting of the blocking plate, the spherical hard fruit and vegetable thrown upward can be prevented from leaking out of the discharge hopper from above and not being collected by the discharge hopper. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in connection with the drawings.

[0018] Figure 1 It is the main view structural schematic diagram of the utility model spherical hard fruit and vegetable grading conveying device;

[0019] Figure 2 It is Figure 1 It is the section structure schematic diagram of A-A part;

[0020] Figure 3 It is Figure 2 It is the partial B view structural schematic diagram.

[0021] Explanation of reference signs: 1, base; 101, first pin shaft seat; 102, second pin shaft seat; 2, adjustable table plate; 201, rib plate; 202, waist-shaped hole; 3, roller; 301, roller way; 302, large gear ring; 303, first material leakage area; 304, second material leakage area; 305, material leakage hole; 4, supporting roller group; 5, speed reduction motor; 6, discharge hopper; 601, side plate; 602, blocking plate; 603, supporting plate; 7, screw; 8, feeding hopper. DETAILED DESCRIPTION

[0022] The core of the utility model is to provide a kind of spherical hard fruit and vegetable grading conveyor, reduce equipment investment cost and can adapt to large quantity sorting conveying operation.

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0025] Reference drawings, Figure 1 It is a front view structural schematic diagram of the spherical hard fruit and vegetable grading conveyor device of the utility model; Figure 2 It is Figure 1 It is a sectional structure schematic diagram of A-A part in the middle; Figure 3 It is Figure 2 It is a partial B view structural schematic diagram.

[0026] In a specific embodiment, as Figures 1 to 3As shown in the utility model, the spherical hard fruit and vegetable grading and conveying device comprises a base 1, an adjustable platform 2, a roller 3, a support roller set 4, a driving assembly and a discharge hopper 6. The adjustable platform 2 is obliquely installed on the base 1 through an adjusting mechanism, the roller 3 is supported on the adjustable platform 2 through the front and rear support roller sets 4, the roller 3 can roll on the support roller set 4, and the central axis of the roller 3 is parallel to the top surface of the adjustable platform 2. The driving assembly drives the roller 3 to rotate around the central axis on the support roller set 4. The roller 3 is provided with a first material leakage area 303 and a second material leakage area 304 in sequence from front to back on the barrel wall, and the first material leakage area 303 and the second material leakage area 304 are both circular ring barrel segments and are uniformly provided with material leakage holes 305 for leaking out the spherical hard fruit and vegetable. The diameter of the material leakage hole 305 in the first material leakage area 303 is smaller than the diameter of the material leakage hole 305 in the second material leakage area 304. The discharge hopper 6 is installed on the adjustable platform 2, the inlet ends of the two discharge hoppers 6 are respectively sleeved on the lower parts of the first material leakage area 303 and the second material leakage area 304, the discharge hopper 6 does not contact the roller 3, and the discharge end of the discharge hopper 6 protrudes from the side wall of the adjustable platform 2.

[0027] Specifically, as shown in the utility model, Figure 1 The angle between the central axis of the roller 3 and the horizontal plane is between 5° and 10°, the high end of the roller 3 is the feeding end, and the bottom end is the discharge end.

[0028] Specifically, as shown in the utility model, Figure 1 The spherical hard fruit and vegetable grading and conveying device further comprises a feeding hopper 8, the feeding hopper 8 is installed above the front end of the adjustable platform 2 through the front and rear support rods, and the feeding hopper 8 is obliquely arranged and has a bottom end that protrudes into the high end of the roller 3. When feeding, the spherical hard fruit and vegetable material is first placed on the feeding hopper 8 and slowly enters the high end of the roller 3 by gravity.

[0029] By arranging the first material leakage area 303 and the second material leakage area 304 on the obliquely arranged roller 3, the spherical hard fruit and vegetable material fed from the high end of the roller 3 flows from top to bottom in the continuously rotating roller 3, the small fruits with small diameters leak out of the first material leakage area 303, the medium fruits with large diameters leak out of the second material leakage area 304 and are output by the corresponding discharge hoppers 6, and the large fruits with very large diameters are finally output at the bottom end of the roller 3, so that a large amount of material can be continuously fed and the device is suitable for batch processing of materials. The adjustable platform 2 is supported by the adjusting mechanism, so that the inclination angle of the adjustable platform 2 and the roller 3 can be adjusted, thereby meeting the discharging speed requirements of different materials. The spherical hard fruit and vegetable grading and conveying device reduces the equipment investment cost and can adapt to large-batch sorting and conveying operations.

[0030] In a specific embodiment of the utility model, as shown in the utility model, Figure 1 And Figure 3As shown in the figure, the adjusting mechanism comprises a first pin shaft seat 101 and a push-pull assembly, the first pin shaft seat 101 is arranged at the rear end of the top surface of the base 1 and is connected with the pin shaft of the supporting lug at the bottom of the rear end of the adjustable table board 2. The number of the first pin shaft seat 101 is two and is symmetrically arranged along the width direction of the base 1. The push-pull assembly is installed at the front end of the top surface of the base 1, and the push-pull assembly pushes and pulls the front end of the adjustable table board 2 to move up and down along the height direction.

[0031] Specifically, as shown in the figure, Figure 1 The push-pull assembly comprises a second pin shaft seat 102, a screw rod 7 and a waist-shaped hole 202. The second pin shaft seat 102 is arranged at the front end of the top surface of the base 1, and the number of the second pin shaft seat 102 is two and is symmetrically arranged along the width direction of the base 1. The screw rod 7 is a fish-eye screw rod, and the bottom end fish-eye hole is sleeved on the pin shaft of the second pin shaft seat 102. The waist-shaped hole 202 is opened at the front end of the adjustable table board 2 and the long side direction is along the length direction of the adjustable table board 2, and the screw rod 7 passes through the waist-shaped hole 202 and is locked up and down by the lock nut.

[0032] Specifically, the screw rod 7 is provided with a large circular flat gasket, and the lock nut is pressed onto the two side surfaces of the waist-shaped hole 202 through the large circular flat gasket.

[0033] Obviously, the push-pull assembly can also be supported and adjusted by oil cylinders connected by pin shafts at both ends, and it is necessary to ensure that the two oil cylinders are synchronously pushed out and pulled back. Similar simple replacement methods also fall within the protection scope of the utility model.

[0034] Through the arrangement of the first pin shaft seat 101 and the push-pull assembly, the push-pull assembly can lift or lower the front end of the adjustable table board 2 at the end away from the first pin shaft seat 101, so that the inclination angle of the adjustable table board 2 can be adjusted; through the adjustment mode of the screw rod 7 cooperating with the waist-shaped hole 202, the push-pull assembly is convenient for precise micro-adjustment and has good structural stability.

[0035] In a specific embodiment of the utility model, as shown in the figure, Figure 1 The supporting roller group 4 comprises a V-shaped support and rollers, and the two rollers are rotatably installed on the inner side wall of the V-shaped support and rollingly support the roller cylinder 3. The roller cylinder 3 is provided with a recessed rolling groove 301 at the position in contact with the rollers. The rolling groove 301 is arranged along the entire circumference.

[0036] Specifically, as shown in the figure, Figure 1As shown, the driving assembly comprises a large gear ring 302, a pinion and a reduction motor 5, the large gear ring 302 is coaxially fixedly connected at the middle position of the outer wall of the roller 3, and the position of the large gear ring 302 is located between the first material leakage area 303 and the second material leakage area 304. The reduction motor 5 is installed on the adjustable table plate 2 through a support, and the output shaft of the reduction motor 5 is installed with a pinion, and the pinion is engaged with the large gear ring 302 in opposite directions. The reduction motor 5 is provided with a brake function, and the reduction and braking of the roller 3 can also be realized.

[0037] Obviously, the driving assembly can also adopt the mode that the reduction motor drives a roller on the inner side wall of the V-shaped support to rotate, and the whole roller 3 is driven to rotate. Similar simple replacement modes all fall within the protection scope of the utility model.

[0038] The roller 3 is supported by the two V-shaped supports in cooperation with the four rollers, and the setting of the groove type raceway 301 prevents the axial movement of the roller 3. The driving assembly composed of the large gear ring 302, the pinion and the reduction motor 5 has stable gear transmission ratio and can accurately control the rotating speed of the roller 3.

[0039] In a specific embodiment of the utility model, as shown in Figure 1 and Figure 2 As shown, the discharge hopper 6 is supported on the top surface of the adjustable table plate 2 through the support plate 603 below. The side plate 601 of the discharge hopper 6 is wrapped outside the first material leakage area 303 or the second material leakage area 304 and the gap is not greater than 5 mm. The gap less than 5 mm can prevent the spherical hard fruits and vegetables from leaking out of the gap.

[0040] Specifically, as shown in Figure 2 The top of the discharge hopper 6 is also provided with a blocking plate 602, the blocking plate 602 is an arc plate, and the gap between the blocking plate 602 and the outer wall of the roller 3 is not greater than 3 mm, and the arc surface of the blocking plate 602 is coaxially arranged with the roller 3. The width of the blocking plate 602 is greater than the diameter of the material leakage hole 305. The length of the blocking plate 602 is consistent with the width of the top of the discharge hopper 6.

[0041] Through the setting of the side plate 601, the spherical hard fruits and vegetables falling out of the material leakage hole 305 can be prevented from falling outward from the side, and the output of the spherical hard fruits and vegetables to one side is ensured; through the setting of the blocking plate 602, the spherical hard fruits and vegetables swinging upward can be prevented from leaking out of the top of the discharge hopper 6 and not being collected by the discharge hopper 6.

[0042] The working process of the spherical hard fruit and vegetable grading conveying device is as follows: firstly, the inclination angle of the roller 3 is adjusted according to the types of the spherical hard fruit and vegetable to be graded. Generally, if the walnut, jujube and the like with small diameters are graded, the inclination angle of the roller 3 can be slightly increased, and the fruit and vegetable material has good fluidity and is convenient for screening; on the contrary, if the apple, eggplant and the like with large diameters are graded, the inclination angle of the roller 3 can be slightly reduced, and the screening process is prolonged. When adjusting, the lock nut above the screw rod 7 is loosened for a distance, and then the lock nut below is rotated by using an open wrench, and is lifted upward or retreated downward. It is noted that the two parts are synchronously rotated or staggered, the front end of the adjustable table plate 2 is stably lifted or lowered, the inclination angle of the roller 3 is adjusted, and then the lock nut above is locked. The operator controls the electric control box to start the button, the equipment is started, the speed reducer 5 works, the pinion drives the large gear ring 302, and the roller 3 rolls on the supporting roller group 4. Taking jujube as an example, the jujube material is manually or by using a conveying belt and is put on the feeding hopper 8, the jujube falls through the inclined bottom end of the feeding hopper 8 into the high end of the roller 3, the roller 3 rotates counterclockwise, and the jujube is continuously shaken to the right while rolling downward. The jujube with a small diameter leaks in the first material leakage area 303, the jujube with a large diameter leaks in the second material leakage area 304, and the jujube with a large diameter is output by the corresponding discharge hopper 6, and the jujube with a large diameter is finally output at the bottom end of the roller 3 and falls into the corresponding collection tray. Figure 2 The jujube with a small diameter leaks in the first material leakage area 303, the jujube with a large diameter leaks in the second material leakage area 304, and the jujube with a large diameter is output by the corresponding discharge hopper 6, and the jujube with a large diameter is finally output at the bottom end of the roller 3 and falls into the corresponding collection tray.

[0043] In summary, the spherical hard fruit and vegetable grading conveyor device, by the first material leakage area 303 and the second material leakage area 304 are set up on the inclined roller 3, the spherical hard fruit and vegetable material is put into from the high end of the roller 3, the spherical hard fruit and vegetable material flows from top to bottom in the continuously rotating roller 3, the small fruit with smaller diameter leaks in the first material leakage area 303, the medium fruit with larger diameter leaks in the second material leakage area 304 and is output by the corresponding discharge hopper 6, and the large fruit with very large diameter is finally output at the bottom end of the roller 3, so that a large amount of material can be continuously put in, and the device is suitable for batch processing material. The adjustable table plate 2 is supported by the adjusting mechanism, the inclination angle of the adjustable table plate 2 and the roller 3 can be adjusted, and the discharging speed requirement of different materials can be realized. The spherical hard fruit and vegetable grading conveyor device reduces the equipment investment cost and can adapt to large-batch sorting and conveying operation. In addition, by the setting of the first pin shaft seat 101 and the push-pull assembly, the push-pull assembly can lift or lower the front end of the adjustable table plate 2 away from the first pin shaft seat 101, so that the inclination angle of the adjustable table plate 2 can be adjusted; by the adjusting mode of the screw rod 7 cooperating with the waist-shaped hole 202, the push-pull assembly can be precisely adjusted in a small amount, and the structure is stable. The roller 3 is supported by two V-shaped supports and four rollers, and the setting of the groove type rolling groove 301 prevents the axial movement of the roller 3. The driving assembly composed of the large gear ring 302, the pinion and the speed reducer motor 5 has stable gear transmission ratio and can accurately control the rotating speed of the roller 3. By the setting of the side plate 601, the spherical hard fruit and vegetable falling out of the material leakage hole 305 can be prevented from falling outward from the side, so that the output of the material can be concentrated to one side; by the setting of the blocking plate 602, the spherical hard fruit and vegetable swinging upward can be prevented from leaking out of the discharge hopper 6 and not being collected by the discharge hopper 6.

[0044] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0045] The above-described embodiments only describe the preferred mode of the utility model, and do not limit the scope of the utility model, and various modifications and improvements of the technical scheme of the utility model made by those skilled in the art without departing from the design spirit of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A spherical hard fruit and vegetable grading and conveying device, characterized by, The utility model provides a kind of hard fruit and vegetable processing equipment, including base (1), adjustable platform (2), roller (3), support roller group (4), drive assembly and discharge hopper (6), the adjustable platform (2) is obliquely installed on the base (1) by adjusting mechanism, the roller (3) is supported on the adjustable platform (2) by front and back two groups of the support roller group (4), the roller (3) middle axis is parallel to the adjustable platform (2) top surface;The drive assembly drives the roller (3) rotates on the support roller group (4) around middle axis;First leakage area (303) and second leakage area (304) are sequentially arranged on the roller (3) barrel wall from front to back, the first leakage area (303) and second leakage area (304) are all circular ring cylinder section and are evenly provided with leakage hole (305) for leaking out circular hard fruit and vegetable, the diameter of the leakage hole (305) in the first leakage area (303) is less than the diameter of the leakage hole (305) in the second leakage area (304);The discharge hopper (6) is installed on the adjustable platform (2), and the inlet ends of the two discharge hoppers (6) are respectively sleeved in the lower parts of the first leakage area (303) and the second leakage area (304), and the discharge ends of the discharge hoppers (6) protrude from the side walls of the adjustable platform (2).

2. The spherical rigid fruit and vegetable grading conveyor according to claim 1, characterized in that, The adjusting mechanism includes a first pin shaft seat (101) and a push-pull assembly, the first pin shaft seat (101) is arranged at the rear end of the top surface of the base (1) and connected with the pin shaft of the supporting lug at the rear end of the bottom of the adjustable platform (2), and the push-pull assembly is installed at the front end of the top surface of the base (1).

3. The spherical rigid fruit and vegetable grading conveyor according to claim 2, characterized in that, The push-pull assembly includes a second pin shaft seat (102), a screw rod (7) and a waist-shaped hole (202), the second pin shaft seat (102) is arranged at the front end of the top surface of the base (1), the screw rod (7) is a fish-eye screw rod, and the bottom fish-eye hole is sleeved on the pin shaft of the second pin shaft seat (102), the waist-shaped hole (202) is arranged at the front end of the adjustable platform (2) and the long edge direction is along the length direction of the adjustable platform (2), the screw rod (7) passes through the waist-shaped hole (202) and is locked up and down by the lock nut.

4. The spherical rigid fruit and vegetable grading conveyor as claimed in claim 1, wherein, The support roller group (4) includes a V-shaped support and rollers, the two rollers are rotatably installed on the inner side wall of the V-shaped support and rollingly support the roller (3), and the roller (3) is provided with a concave-shaped rolling groove (301) at the position in contact with the rollers.

5. The spherical rigid fruit and vegetable grading conveyor according to claim 4, characterized in that, The drive assembly includes a large gear ring (302), a pinion and a speed reducer motor (5), the large gear ring (302) is coaxially fixedly connected to the middle position of the outer wall of the roller (3), the speed reducer motor (5) is installed on the adjustable platform (2) through a support, the output shaft of the speed reducer motor (5) is installed with the pinion, and the pinion is oppositely engaged with the large gear ring (302).

6. The spherical rigid fruit and vegetable grading conveyor of claim 1, wherein, The side plate (601) of the discharge hopper (6) is wrapped outside the first leakage area (303) or the second leakage area (304) with a gap of not more than 5 mm.

7. The spherical rigid fruit and vegetable grading conveyor according to claim 6, characterized in that The top of the discharge hopper (6) is further provided with a baffle plate (602), the baffle plate (602) is an arc-shaped plate, the gap between the baffle plate (602) and the outer wall of the roller (3) is not greater than 3mm, and the width of the baffle plate (602) is greater than the diameter of the material leakage hole (305).

8. The spherical rigid fruit and vegetable grading conveyor of claim 1, wherein, Further comprising a feeding hopper (8) which is installed above the front end of the adjustable table plate (2) through a supporting rod, and the feeding hopper (8) is obliquely arranged and the bottom end thereof is inserted into the high end of the feeding of the roller (3).

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