Spherical stone fruit grader

Abstract

The application provides a spherical fruit grading machine, which comprises a rack, a conveying mechanism and a sorting mechanism, the sorting mechanism comprises a grading box, a conveying auger and grading rollers, the conveying auger and the grading rollers are rotatably connected in the grading box, the grading roller comprises a plurality of grading units, each grading unit is provided with a plurality of grading blind holes, the grading box is provided with a feeding port near the input end of the conveying auger, the diameters of the grading blind holes corresponding to the plurality of grading units are gradually increased from the conveying direction of the conveying auger, the conveying mechanism has a plurality of conveying channels, and the conveying channels are arranged one by one below the grading units. Through the structure arranged in this way, the size sorting of the fruits can be automatically realized, the independent grading blind holes can avoid the direct blockage of a plurality of fruits, the fruits clamped in the grading blind holes due to irregular shapes can be adjusted and dropped out through the real-time rotation of the grading roller, thereby avoiding manual vibration and scattering multiple times, greatly saving the manual labor, and improving the production and processing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fruit processing equipment, and in particular to a spherical fruit grading machine. BACKGROUND

[0002] In the fruit processing industry, for fruits with shells, peeling is one of the necessary processes. After peeling, the fruits are processed further. In order to facilitate peeling, size sorting before peeling can improve the efficiency of subsequent production and processing.

[0003] Currently, fruit shell classification usually has two ways: manual screening and grading equipment screening. Manual screening is used for fruit classification. Due to the large number of fruits, manual classification is time-consuming and labor-intensive. Grading equipment generally relies on the gravity of the fruits to fall and screen through different particle size holes. However, due to the large number of fruits, the screen holes are often blocked, which requires manual dispersing or vibration, thus reducing the production and processing efficiency.

[0004] Therefore, it is necessary to provide a spherical fruit grading machine to solve or at least alleviate the above problems. SUMMARY

[0005] The main purpose of the present application is to provide a spherical fruit grading machine to solve the problem that the screen holes are often blocked in the screening method of the prior art, which requires manual dispersing or vibration, thus reducing the production and processing efficiency.

[0006] To achieve the above purpose, the present application provides a spherical fruit grading machine, which comprises a rack, a conveying mechanism and a sorting mechanism, wherein the conveying mechanism and the sorting mechanism are both installed on the rack.

[0007] The sorting mechanism comprises a grading box, a conveying auger and a grading roller, wherein the conveying auger and the grading roller are both rotatably connected in the grading box, and the grading roller is arranged below the conveying auger.

[0008] The grading roller comprises a plurality of grading units arranged at intervals along the extension direction thereof, wherein each grading unit is provided with a plurality of grading blind holes arranged at intervals in the circumferential direction of the grading roller, and the grading blind holes are semispherical.

[0009] The grading box is provided with a feed inlet near the input end of the conveying auger, and the diameters of the corresponding grading blind holes of the plurality of grading units are gradually increased from the conveying direction of the conveying auger.

[0010] The conveying mechanism has a plurality of conveying channels arranged side by side along the extension direction of the grading roller, and the conveying channels are arranged one by one below the grading units.

[0011] Preferably, the sorting mechanism further comprises a fruit cleaner, the fruit cleaner comprises a mounting crossbar arranged along the length direction of the grading roller and a plurality of fruit cleaning pieces arranged one by one below the grading units, the mounting crossbar is fixed to the bottom of the grading box and arranged below the grading roller, a plurality of fruit cleaning pieces are arranged on the mounting crossbar along the length direction of the mounting crossbar, and a plurality of strip-shaped channels for allowing the fruit cleaning pieces to pass through are arranged in each grading unit.

[0012] Each strip-shaped channel is connected between two adjacent grading blind holes, and the fruit cleaning piece comprises a fixed end and a stop end, the fixed end is fixed to the mounting crossbar, and the stop end extends into the strip-shaped channel to press the forest fruits in the grading blind hole.

[0013] Preferably, the conveying mechanism comprises a conveying belt and a plurality of grading baffles, the conveying belt is fixed to the rack, and the conveying belt is movably arranged along the rotation direction of the grading roller, and a plurality of grading baffles are arranged on the conveying belt along the length direction of the grading roller, so that the conveying channel is formed between two adjacent grading baffles and the conveying belt.

[0014] Preferably, the conveying auger and the grading roller are in transmission connection.

[0015] Preferably, the grading roller and the conveying belt are in transmission connection.

[0016] Preferably, the sorting mechanism further comprises a driving motor, the driving motor is fixed to the rack, and the driving end of the driving motor is in transmission connection with the grading roller.

[0017] Preferably, the conveying mechanism further comprises a plurality of stop plates arranged along the vertical direction, and the stop plates are arranged on the conveying belt along the conveying direction of the conveying belt.

[0018] Preferably, the stop end of the fruit cleaning piece is upwardly bent to the fixed end of the fruit cleaning piece.

[0019] Preferably, the sorting mechanism further comprises a protective cover, the protective cover is arranged in a trumpet shape with an opening upward, and the bottom of the protective cover is in communication with the feeding port.

[0020] Preferably, the stop end of the fruit cleaning piece is arranged in an arc shape.

[0021] Compared with the prior art, the sorting mechanism provided by the present application has the following advantages:

[0022] The spherical fruit grading machine provided by the application comprises a rack, a conveying mechanism and a sorting mechanism. The sorting mechanism comprises a grading box, a conveying auger and grading rollers. The conveying auger and the grading rollers are rotatably connected to the grading box, and the grading rollers are arranged below the conveying auger. The grading roller comprises a plurality of grading units arranged at intervals along the extension direction of the grading roller. Each grading unit is provided with a plurality of grading blind holes arranged at intervals in the circumferential direction of the grading roller. The grading blind holes are semispherical. The grading box is provided with a feeding port near the input end of the conveying auger. The diameters of the grading blind holes corresponding to the plurality of grading units are arranged in an increasing order from the conveying direction of the conveying auger. The conveying mechanism comprises a plurality of conveying channels arranged side by side in the extension direction of the grading roller. The conveying channels are arranged one by one below the grading units. The structure arranged in this way can realize automatic size sorting of fruits. The independent grading blind holes can avoid direct blockage of a plurality of fruits. Fruits irregularly arranged in the grading blind holes can be adjusted and dropped out through the real-time rotation of the grading roller, thereby avoiding manual vibration and scattering multiple times, greatly saving manual labor and improving production and processing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0024] Figure 1 It is a perspective view of the overall structure in an embodiment of the present application.

[0025] Figure 2 It is a longitudinal sectional view of the overall structure in an embodiment of the present application.

[0026] Figure 3 It is a plan view of the overall structure in an embodiment of the present application.

[0027] Figure 4 It is a transverse sectional view of the sorting mechanism in an embodiment of the present application.

[0028] Figure 5 It is a perspective view of the grading roller in an embodiment of the present application.

[0029] Figure 6 It is a longitudinal sectional view of the grading roller in an embodiment of the present application.

[0030] Figure 7 It is a side view of the overall structure in an embodiment of the present application.

[0031] Figure 8 Figure 3 is a side view of the overall structure of an embodiment of the present application.

[0032] The purposes, features and advantages of the present application will be further illustrated in conjunction with the embodiments and the accompanying drawings.

[0033] Explanation of reference numerals:

[0034] 10, sorting mechanism; 110, grading box; 111, feeding port; 112, protective cover; 120, conveying auger; 130, grading roller; 131, grading blind hole; 132, strip-shaped passage; 140, mounting crossbar; 150, clear fruit piece; 151, fixed end; 152, stop end; 20, conveying mechanism; 210, conveying belt; 220, grading baffle; 230, stop baffle; 30, rack; 310, driving motor. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein merely exemplify the application and do not limit the application.

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0038] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0039] Please refer to the accompanying drawings Figures 1-8In an embodiment, the spherical fruit grading machine comprises a rack 30, a conveying mechanism 20 and a sorting mechanism 10, wherein the conveying mechanism 20 and the sorting mechanism 10 are both mounted on the rack 30. First of all, it should be pointed out that the grading equipment in the prior art generally relies on the gravity of the fruits to fall and is screened through different particle size holes. However, due to the large number of fruits, the screening holes are often blocked, and manual dispersing or vibration is required, which reduces the production efficiency. The spherical fruit grading machine is provided to solve the above problems in the prior art. Specifically, the spherical fruit grading machine comprises a rack 30, a conveying mechanism 20 and a sorting mechanism 10, wherein the conveying mechanism 20 and the sorting mechanism 10 are both mounted on the rack 30. The conveying mechanism 20 is used to receive the fruits sorted by the sorting mechanism 10, and the sorting mechanism 10 is used to automatically grade fruits of various sizes. After grading, the next process can be carried out without manual operation, thereby improving the production efficiency.

[0040] The sorting mechanism 10 comprises a grading box 110, a conveying auger 120 and a grading roller 130, wherein the conveying auger 120 and the grading roller 130 are both rotatably connected in the grading box 110, and the grading roller 130 is arranged below the conveying auger 120. The grading roller 130 comprises a plurality of grading units arranged at intervals along the extension direction thereof, wherein each grading unit is provided with a plurality of grading blind holes 131 arranged at intervals in the circumferential direction of the grading roller 130, and the grading blind holes 131 are semispherical.

[0041] Specifically, the spherical fruit grading machine comprises a rack 30, a conveying mechanism 20 and a sorting mechanism 10, wherein the rack 30 is used to mount the conveying mechanism 20 and the sorting mechanism 10, so that the conveying mechanism 20 and the sorting mechanism 10 are both mounted on the rack 30. The conveying mechanism 20 is used to receive the fruits sorted by the sorting mechanism 10, and the sorting mechanism 10 is used to automatically grade fruits of various sizes. After grading, the next process can be carried out without manual operation, thereby improving the production efficiency.

[0042] The sorting mechanism 10 comprises a grading box 110, a conveying auger 120 and a grading roller 130. The grading box 110 is used for mounting the conveying auger 120 and the grading roller 130. The conveying auger 120 is used for conveying fruits and is rotatably arranged in the grading box 110 to convey the fruits along the extension direction of the conveying auger 120 by rotation. The grading roller 130 is used for receiving the fruits from the conveying auger 120 and is rotatably arranged in the grading box 110 below the conveying auger 120. After receiving the fruits, the grading roller 130 is rotated to transfer the fruits to the conveying mechanism 20 below the sorting mechanism. The grading roller 130 comprises a plurality of grading units arranged at intervals along the extension direction of the grading roller 130. Each grading unit is used for receiving fruits of the same size. The plurality of grading units receive fruits of different sizes for grading. In each grading unit, a plurality of grading blind holes 131 are arranged at intervals along the circumference of the grading roller 130. The grading blind holes 131 are used for receiving the fruits from the conveying auger 120. Each grading blind hole 131 receives one fruit to avoid the situation that multiple fruits block the holes. The fruits are sorted by the size of the grading blind holes 131. Since the fruits are usually spherical, the grading blind holes 131 are arranged in a semispherical shape to facilitate the fruits to fall into the grading blind holes 131. It is worth mentioning that some fruits have low sphericity and are irregularly spherical, such as ellipsoidal. Such fruits may be stuck in the grading blind holes 131 due to their irregular shape after falling into the grading blind holes 131. The fruits can be adjusted in position after the rotation of the grading roller 130 and then fall out without manual follow-up, which is highly efficient and automated.

[0043] The grading box 110 is provided with a feeding port 111 near the input end of the conveying auger 120. The diameters of the grading blind holes 131 corresponding to the plurality of grading units are arranged in increasing order from the conveying direction of the conveying auger 120. The conveying mechanism 20 has a plurality of conveying channels arranged side by side along the extension direction of the grading roller 130. The conveying channels are arranged one by one below the grading units.

[0044] In detail, the grading box 110 is provided with an inlet 111 near the input end of the conveying auger 120, which is used for feeding the fruits and is arranged near the input end of the conveying auger 120 so as to limit the fruits to enter from the input end, so that the fruits are conveyed from the input end of the conveying auger 120, and meanwhile, the small fruits are prevented from falling into the grading blind holes 131 with large diameters during the conveying process. Therefore, the diameters of the grading blind holes 131 corresponding to the grading units are arranged in sequence from the conveying direction of the conveying auger 120, so that the small fruits are preferentially correspondingly entered into the grading blind holes 131 with small diameters when the fruits are conveyed from the conveying direction of the conveying auger 120, and the large fruits cannot be entered into the grading blind holes 131 with small diameters, so that the fruits are continuously conveyed along the conveying auger 120, and then fall into the corresponding grading blind holes 131 when the size of the fruits corresponds to the diameter of the grading blind holes 131, so as to achieve the effect of automatic sorting.

[0045] Further, in order to correspondingly receive the fruits after grading, the conveying mechanism 20 has a plurality of conveying channels arranged in sequence and side by side along the extension direction of the grading roller 130, each of the conveying channels receives the fruits with the same size specification in the same grading unit. Therefore, the conveying channels are correspondingly arranged below the grading units, which means that the corresponding independent conveying channels are arranged below each of the grading units to receive the fruits. It is worth mentioning that the width of the conveying channel needs to be greater than the diameter of the largest grading blind hole 131, so as to prevent the large fruits from being stuck in the conveying channel and unable to be conveyed.

[0046] As a preferred embodiment of the present application, the sorting mechanism 10 further comprises a fruit cleaner, which comprises a mounting cross bar 140 arranged along the length direction of the grading roller 130 and a plurality of fruit cleaning pieces 150 correspondingly arranged with the grading units. The mounting cross bar 140 is fixed to the bottom of the grading box 110 and arranged below the grading roller 130, and the plurality of fruit cleaning pieces 150 are arranged on the mounting cross bar 140 in the length direction of the mounting cross bar 140. A plurality of strip-shaped channels 132 are arranged in each of the grading units for the fruit cleaning pieces 150 to penetrate. Each of the strip-shaped channels 132 is connected between two adjacent grading blind holes 131, and the fruit cleaning piece 150 comprises a fixed end 151 and a stop end 152. The fixed end 151 is fixed to the mounting cross bar 140, and the stop end 152 extends into the strip-shaped channel 132 to press the fruits in the grading blind holes 131.

[0047] It should be noted that the sorting mechanism 10 also includes a fruit cleaner, since the sphericity of the forest fruits is not necessarily particularly high, and some of the forest fruits can be partially oval, so the fruit cleaner is added to prevent blockage, which specifically includes a mounting crossbar 140 for installing a plurality of fruit cleaning pieces 150, the mounting crossbar 140 is used for installing the fruit cleaning pieces 150, and the fruit cleaning pieces 150 are arranged along the length direction of the grading roller 130, and the fruit cleaning pieces 150 are used to further help the forest fruits to fall out of the grading blind hole 131, so that some forest fruits that cannot freely fall out are prevented from being blocked in the grading blind hole 131, so the fruit cleaning pieces 150 need to be arranged in each grading unit, that is, the fruit cleaning pieces 150 are arranged one-to-one with the grading unit, and the mounting crossbar 140 is fixed to the bottom of the grading box 110 and arranged below the grading roller 130, so that the fruit cleaning pieces 150 are arranged below the grading roller 130.

[0048] Wherein, in order to facilitate the fruit cleaning pieces 150 to extend into the grading blind hole 131, a plurality of strip-shaped channels 132 for the fruit cleaning pieces 150 to penetrate are also arranged in each grading unit, each strip-shaped channel 132 is connected between two adjacent grading blind holes 131, so that the strip-shaped channels 132 and the grading blind holes 131 are connected to form an annular channel, and the annular channel is used for the fruit cleaning pieces 150 to penetrate, wherein the fruit cleaning pieces 150 include a fixed end 151 and a stop end 152, the fixed end 151 is used to fix one end of the fruit cleaning pieces 150 to the mounting crossbar 140, and the stop end 152 extends into the annular channel, when the forest fruits in the grading blind hole 131 cannot fall out due to rotation, the forest fruits are pressed between the fruit cleaning pieces 150 due to the rotation of the grading roller 130, so as to realize the downward thrust of the fruit cleaning pieces 150 on the forest fruits, so as to help the forest fruits blocked in the grading blind hole 131 to fall out.

[0049] As a more preferred embodiment of the present application, the conveying mechanism 20 includes a conveying belt 210 and a plurality of grading baffles 220, the conveying belt 210 is fixed to the rack 30, and the conveying belt 210 is movably arranged along the rotation direction of the grading roller 130, and a plurality of grading baffles 220 are arranged on the conveying belt 210 along the length direction of the grading roller 130, so that the conveying channel is formed between the adjacent two grading baffles 220 and the conveying belt 210.

[0050] It is worth noting that the conveying mechanism 20 comprises a conveying belt 210 and a plurality of stepped baffles 220, the conveying belt 210 is movably arranged along the rotation direction of the grading roller 130 for transporting the graded fruits, and the conveying belt 210 is fixed to the frame 30, and the stepped baffles 220 are used to separate the conveying belt 210 into a plurality of conveying channels, the conveying channels are formed by the combination of the adjacent two stepped baffles 220 and the conveying belt 210, and are correspondingly arranged below each grading unit, when the fruits of different sizes fall into the corresponding conveying channels, they are transported to the next process by the conveying belt 210.

[0051] As a preferred embodiment of the present application, the conveying auger 120 and the grading roller 130 are drivingly connected.

[0052] It is worth noting that since the conveying auger 120 and the grading roller 130 are both components that need to be rotated synchronously, the advantages of driving connection can reduce the installation of motors and save space, therefore, the conveying auger 120 and the grading roller 130 are drivingly connected, which can be drivingly connected through the combination of a transmission belt or a transmission gear and a transmission chain.

[0053] As a preferred embodiment of the present application, the grading roller 130 and the conveying belt 210 are drivingly connected.

[0054] It is worth noting that similar to the conveying auger 120 and the grading roller 130, the conveying belt 210 also needs to be rotated synchronously after receiving the fruits to transport the fruits, therefore, the grading roller 130 can also be drivingly connected with the conveying belt 210, so that by driving one component to rotate, the three components are rotated synchronously.

[0055] Further, a driving motor 310 is also included, the driving motor 310 is fixed to the frame 30, and the driving end of the driving motor 310 is drivingly connected with the grading roller 130.

[0056] It is worth noting that the driving motor 310 is used to drive the grading roller 130 to rotate, therefore, the driving end of the driving motor 310 needs to be drivingly connected with the grading roller 130, when the driving motor 310 drives the grading roller 130 to rotate, the conveying auger 120 and the conveying belt 210 drivingly connected with the grading roller 130 are also rotated synchronously.

[0057] Further, the conveying mechanism 20 also comprises a plurality of stop plates 230 arranged in the vertical direction, a plurality of the stop plates 230 are arranged on the conveying belt 210 in the conveying direction of the conveying belt 210.

[0058] It should be understood that the stop plate 230 is used to prevent the fruit from rolling out of the fruit grader due to its spherical shape and the inertia of the falling direction, so that the stop plate 230 is arranged on the conveying belt 210 in the conveying direction of the conveying belt 210.

[0059] Further, the stop end 152 of the fruit cleaning piece 150 is bent upward to the fixed end 151 of the fruit cleaning piece 150.

[0060] It should be noted that the bending arrangement can facilitate the fruit to resist the stop end 152 of the fruit cleaning piece 150, and due to the inclined contact, the fruit is subjected to a downward inclined force, so that it is easier to fall out of the grading blind hole 131.

[0061] Further, it further comprises a protective cover 112, which is arranged in an upwardly open horn shape, and the bottom of the protective cover 112 is in communication with the feeding port 111.

[0062] It should be noted that the protective cover 112 is used to prevent a large number of fruits from falling out of the fruit grader when they are fed at the same time, so it is arranged in an upwardly open horn shape to enlarge the feeding port 111, and the bottom of the protective cover 112 is in communication with the feeding port 111.

[0063] Further, the stop end 152 of the fruit cleaning piece 150 is arranged in an arc shape.

[0064] It can be understood that the arc-shaped arrangement can make the contact more smooth and avoid damaging the fruit shell when squeezed.

[0065] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and the drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A spherical stone fruit grader, characterized in that, The application relates to a fruit sorting machine, which comprises a rack, a conveying mechanism and a sorting mechanism, wherein the conveying mechanism and the sorting mechanism are both mounted on the rack. The sorting mechanism comprises a grading box, a conveying auger and a grading roller, the conveying auger and the grading roller are both rotatably connected in the grading box, and the grading roller is arranged below the conveying auger. The grading roller comprises a plurality of grading units which are arranged at intervals along the extension direction of the grading roller, wherein each grading unit is provided with a plurality of grading blind holes which are arranged at intervals along the circumferential direction of the grading roller, and the grading blind holes are semispherical. The grading box is provided with an inlet at the input end close to the conveying auger, and the diameters of the grading blind holes corresponding to the grading units are arranged in sequence from the conveying direction of the conveying auger. The conveying mechanism comprises a plurality of conveying channels which are arranged at intervals along the extension direction of the grading roller, and the conveying channels are arranged below the grading units in sequence. The sorting mechanism further comprises a fruit cleaner, the fruit cleaner comprises a mounting horizontal rod which is arranged along the length direction of the grading roller and a plurality of fruit cleaning pieces which are arranged below the grading units in sequence, the mounting horizontal rod is fixed to the bottom of the grading box and arranged below the grading roller, the fruit cleaning pieces are arranged at intervals on the mounting horizontal rod along the length direction of the mounting horizontal rod, and a plurality of strip-shaped channels are arranged in each grading unit for the fruit cleaning pieces to penetrate. Each strip-shaped channel is connected between two adjacent grading blind holes, the fruit cleaning piece comprises a fixed end and a stop end, the fixed end is fixed to the mounting horizontal rod, and the stop end penetrates into the strip-shaped channel to extrude the forest fruits in the grading blind hole.

2. Spherical fruit grader according to claim 1, characterized in that The conveying mechanism comprises a conveying belt and a plurality of grading baffles, the conveying belt is fixed to the rack and movably arranged along the rotation direction of the grading roller, and the grading baffles are arranged at intervals on the conveying belt along the length direction of the grading roller so that the conveying channels are formed between two adjacent grading baffles and the conveying belt.

3. Spherical fruit grader according to claim 2, characterized in that The conveying auger and the grading roller are drivingly connected.

4. The spherical stone fruit grader according to claim 3, characterized in that, The grading roller and the conveying belt are drivingly connected.

5. The spherical stone fruit grader according to claim 4, characterized in that, A driving motor is further arranged, the driving motor is fixed to the rack, and the driving end of the driving motor is drivingly connected with the grading roller.

6. The spherical stone fruit grader according to claim 2, characterized in that, The conveying mechanism further comprises a plurality of stop plates which are arranged at intervals along the conveying direction of the conveying belt.

7. The spherical pome fruit grader according to claim 1, characterized in that, The stop end of the fruit cleaning piece is upwardly bent to the fixed end of the fruit cleaning piece.

8. The spherical soft fruit grader according to claim 1, characterized in that A protective cover is further arranged, the protective cover is arranged in the shape of an upward-opening horn, and the bottom of the protective cover is connected with the inlet.

9. The spherical stone fruit grader according to claim 7, characterized in that, The stop end of the fruit cleaning piece is arranged in the shape of an arc.

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