A rolling and loosening device for an orange peeling device

Abstract

The application discloses a rolling and rubbing peeling device for orange peeling, and belongs to the technical field of orange juice processing equipment. The device comprises a shell, a supporting mechanism, a feeding cover, a rolling and rubbing roller and a power mechanism. The shell has a circular inner cavity and at least one outlet. The supporting mechanism is arranged at the bottom of the shell and has at least one supporting surface. The feeding cover is arranged on the upper portion of the shell and is provided with the same number of feeding ports as the outlets of the shell. The rolling and rubbing roller is rotatably arranged in the circular inner cavity of the shell and is provided with a rolling and rubbing surface. The inner wall of the shell and the rolling and rubbing surface form a rolling and rubbing channel for the orange to pass through. The power mechanism is fixedly arranged at the bottom of the supporting surface and transmits power to the rolling and rubbing roller through the supporting surface, and the rolling and rubbing roller rotates under the driving of the power mechanism. The width of the rolling and rubbing channel changes continuously from the feeding port to the outlet, and the minimum width is smaller than the diameter of the orange. The rolling and rubbing peeling device can effectively solve the rolling and peeling of oranges of different sizes before peeling.

Description

Technical Field

[0001] This invention belongs to the technical field of orange juice processing equipment, specifically relating to a tumbling and loosening device for orange peeling, mainly used in the process before peeling after orange washing and screening. Background Technology

[0002] Oranges are a crucial raw material for producing fresh fruit juice and various fruit juice beverages. Orange juice and fruit-based drinks are widely popular and have high market value. In the production of orange juice and other beverages, it's necessary to extract the juice, rich in vitamins and other nutrients, from the oranges. Squeezing the oranges is currently the most widely used method. However, when using the peel-on-the-fruit squeezing method, aromatic oils composed of substances like limonene from the orange peel's secretory cavities also accumulate in the squeezed liquid along with the pulp. These aromatic oils, along with tannins and other substances squeezed out and mixed into the fresh orange juice, often have a noticeable off-flavor, such as bitterness or astringency. The addition of these substances significantly reduces the taste of the orange juice, and they are difficult to separate in subsequent processes. While masking or treating these substances with food additives is a relatively effective technique, the increase in food additives undoubtedly reduces consumer willingness to buy and increases production costs.

[0003] To solve the above problems, oranges must be peeled, and peeling has become an essential step for achieving a good taste. Traditional peeling mainly involves manual peeling, which is obviously inefficient and costly, and no longer meets the needs of modern production. With the continuous advancement of modern automated food production technology, automated machinery has gradually become the mainstream method for fruit peeling. Currently, mechanical peeling of oranges mainly falls into two categories: shaving and peeling, with the former being the more common method. Unlike apples and pears, where the peel and flesh are tightly bound, oranges have a peel that can be separated from the pulp. Furthermore, oranges differ from tangerines; the bond between the orange peel and pulp is often much stronger than that of tangerines. This tight bond between the pulp and peel presents significant technical challenges for removing the orange peel. However, because oranges have a nearly spherical, ellipsoidal structure with a small major-to-major ratio and are basically symmetrical, they can be easily rotated at high speed using a motor. This greatly facilitates the cutting and peeling of oranges by external blades. Therefore, most existing orange peeling devices use the peeling method to remove the peel, and this method has a relatively high peeling effect.

[0004] However, peeling by turning typically only involves one cut, which often results in incomplete peeling, typically producing yellow and white stripes, where the yellow is from the remaining orange peel. Using such raw material in subsequent processing will undoubtedly severely impact the product's taste. On the other hand, a two-cutting method often makes it difficult to control the cutting depth, resulting in the removal of a large amount of fruit pulp and wasting resources.

[0005] Compared to turning and peeling, peeling can often remove orange peel more accurately and cleanly. However, the technical requirements for peeling are much higher than those for turning. This is because peeling requires the blade to accurately cut into the fibrous soft tissue layer between the peel and the pulp from the outside in, while turning simply peels directly from the outside. This makes the precision requirements for the blade's entry angle in peeling far greater than those in turning. To achieve peeling, Zhang Haokun et al. from Kunming University of Science and Technology developed a peeling-type orange peeling machine (application number: 202220723913.6). Although this peeling machine can achieve peeling, it is not based on a rotating body, which is not conducive to efficient assembly line production and cannot solve the problem of blade entry precision in a rotating state.

[0006] To achieve the desired peeling effect when an orange is rotated, besides improving the precision of the cutting angle, reducing the precision requirement is also an effective way to achieve the above-mentioned technical effect. Common sense tells us that rolling an orange a few times before hand-peeling greatly reduces the difficulty of peeling. The main reason for this effect is that rolling or tumbling promotes the separation of the orange pulp from the peel, increases the gap between the pulp and peel, and to some extent reduces the bonding strength of the fibrous soft tissue layer to the pulp and peel.

[0007] Before oranges are peeled and juiced, they usually need to be washed and sorted to separate oranges of different sizes. How to mechanically and automatically tumble or press oranges of different sizes to loosen the peel before peeling is a technical problem that has not been solved by existing technologies prior to this application. Based on this, the applicant has filed this invention patent. Summary of the Invention

[0008] (a) Technical problems to be solved

[0009] This invention aims to solve the following technical problems existing in the prior art or related technologies:

[0010] Before peeling oranges while they are rotating, how can we loosen the peel by tumbling or rolling oranges of different sizes?

[0011] (II) Technical Solution

[0012] To solve the above-mentioned technical problems, the present invention provides a tumbling and loosening device for an orange peeling device, and the specific technical solution adopted is as follows:

[0013] A tumbling and loosening device for an orange peeling apparatus, the tumbling and loosening device comprising:

[0014] Housing 1, having a circular inner cavity and at least one outlet;

[0015] Support mechanism 3 is located at the bottom of housing 1 and has at least one support surface 31; housing 1 is mounted on support surface 31;

[0016] The feed cover 4 is installed on the upper part of the housing 1 and has the same number of feed inlets as the outlet of the housing 1.

[0017] The tumbling roller 5 is rotatably installed in the circular inner cavity of the housing 1 and is provided with a tumbling surface 51; a tumbling channel for oranges to pass through is formed between the inner wall of the housing 1 and the tumbling surface 51.

[0018] The power mechanism 2 is fixedly installed at the bottom of the support surface 31 and transmits power to the tumbling roller 5 through the support surface 31. The tumbling roller 5 rotates under its drive.

[0019] The width of the tumbling channel changes continuously from the inlet to the outlet, and the minimum width is smaller than the diameter of the orange.

[0020] Preferably, the theoretical diameter of the oranges entering the tumbling channel after sorting is D; the minimum width of the tumbling channel is 0.80D-0.99D.

[0021] More preferably, the minimum width of the tumbling channel is 0.80 times, 0.85 times, 0.90 times, 0.95 times, or 0.99 times the diameter D of the orange entering the channel.

[0022] Preferably, a variable diameter plate is provided on the inner wall of the housing 1; the variable diameter plate causes the width of the tumbling channel to gradually decrease from the feed inlet to the outlet.

[0023] Preferably, the housing 1 has at least two outlets; the outlets include a guide plate 15 extending in the tangential direction along the side wall 11 of the housing 1 and a partition plate 14 opposite to the guide plate 15.

[0024] More preferably, the housing 1 is provided with two outlets, each outlet being provided with a guide plate 15 and a partition plate 14 arranged in parallel; the two partition plates 14 divide the annular area between the inner wall of the housing side wall 11 and the tumbling surface 51 of the tumbling roller 5 into two tumbling channels.

[0025] More preferably, the feed cover 4 includes a first feed inlet 41 and a second feed inlet 43; a first feed hole 42 is provided in the first feed inlet 41, and the first feed hole 42 is opposite to the starting section of the tumbling channel for tumbling large-diameter oranges; a second feed hole 44 is provided in the second feed inlet 43, and the second feed hole 44 is opposite to the starting section of the tumbling channel for tumbling small-diameter oranges.

[0026] More preferably, two limiting members 46 are provided on both sides of the bottom surface of the feed cover 4; the limiting members 46 abut against the outer side of the two partitions 14 respectively, thereby stabilizing the feed cover 4 and preventing it from rotating due to vibration during use.

[0027] Preferably, the tumbling roller 5 includes a rolling shaft 52 and a tumbling surface 51 integrally connected to the rolling shaft 52; a shaft hole 53 is provided at the lower center of the rolling shaft 52, and the output shaft of the power mechanism 2 is connected to the shaft hole 53.

[0028] More preferably, the tumbling surface 51 is an outer circumferential surface that is continuously undulating around the rolling shaft 52.

[0029] Preferably, the device further includes an inclined chute 6, which is located at the bottom of the tumbling channel and gradually decreases in thickness along the arc curve from the inlet to the outlet, forming a ramp that promotes the rolling of oranges.

[0030] (III) Beneficial Effects

[0031] Compared with the prior art, the beneficial effects obtained by the present invention are as follows:

[0032] I. The tumbling and loosening device provided by this invention is installed after the orange washing and sorting process and before the peeling process. It has at least two feed inlets, which are connected to the conveying end of oranges of different sizes in the sorting process. The tumbling device has tumbling channels inside for oranges of different sizes, thereby achieving tumbling or rolling to loosen the peel of oranges of different sizes. Simultaneously, this device not only connects to the upstream sorting process and loosens the peel of oranges of different sizes, but also smoothly connects to the subsequent peeling process, reducing the problem of poor processing effect caused by large differences in orange size during the peeling process. Furthermore, it outputs oranges with relatively uniform diameter to different production lines through multiple outlets, which not only improves work efficiency but also enhances the efficiency of subsequent peeling processes.

[0033] II. The tumbling and loosening device provided by this invention has a diameter-reducing plate inside the outer shell. The arc-shaped diameter-reducing plate gradually increases in thickness from the inlet to the outlet, thereby reducing the width of the tumbling channel. This allows oranges with varying diameters after sorting to undergo tumbling and loosening. In the smaller diameter tumbling channel, a thicker diameter-reducing plate is used, ensuring the outer wall of the outer shell remains circular while allowing for significant variations in the inner diameter of different sections of the inner wall. This accommodates oranges with large diameter differences sorted in different channels. Thus, the processing difficulty of the equipment is reduced while maintaining basic functionality. Furthermore, when the tumbling and loosening device has only one tumbling channel, and the diameter differences of the oranges entering the tumbling channel are small, variations in the width of the tumbling channel can also be used to tumble and loosen oranges of different sizes.

[0034] Third, the tumbling device provided by the present invention has a tumbling roller driven by a power mechanism inside a circular outer shell. The tumbling surface of the tumbling roller opposite to the inner wall of the outer shell has a continuous undulating structure. During the rotation, the contact distance between the tumbling roller and the orange can be changed, thereby realizing intermittent force tumbling of the orange. At the same time, it can also drive the orange forward in the tumbling channel, avoiding the orange from being blocked in the tumbling channel.

[0035] Fourth, the tumbling device provided by the present invention has an arc-shaped inclined surface at the bottom of the tumbling channel. The thickness of the inclined surface gradually decreases from the feed inlet to the discharge outlet, thereby forming a continuous arc-shaped slope. This allows the oranges entering the tumbling channel to move smoothly to the downstream process direction under the combined action of gravity and the tumbling rollers, thus ensuring the smooth operation of the entire process.

[0036] Fifth, the tumbling device has a simple structure and a reasonable location, eliminating the need for significant modifications to existing orange juice production lines and reducing the cost of equipment upgrades. Furthermore, the power mechanism of the tumbling device can increase the movement speed of the oranges in this production process, further improving production efficiency. Attached Figure Description

[0037] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0038] Figure 1 The diagram schematically shows a front view of the tumbling and loosening device according to a preferred embodiment of the present invention.

[0039] Figure 2 The diagram schematically illustrates a top view of the tumbling and loosening device according to a preferred embodiment of the present invention.

[0040] Figure 3The diagram schematically illustrates a three-dimensional structural view of the tumbling and loosening device in a preferred embodiment of the present invention from a top perspective.

[0041] Figure 4 The diagram schematically illustrates a perspective view of the tumbling and loosening device in a preferred embodiment of the present invention, viewed from below.

[0042] Figure 5 The diagram schematically shows a top view of the tumbling and loosening device in a preferred embodiment of the present invention, with the feed cover concealed.

[0043] Figure 6 The diagram schematically shows a top view of the housing of the tumbling and loosening device according to a preferred embodiment of the present invention.

[0044] Figure 7 A perspective view of the feed cover of the tumbling and loosening device according to a preferred embodiment of the present invention is shown schematically.

[0045] Figure 8 for Figure 7 A bottom view.

[0046] Figure 9 A three-dimensional structural diagram of the tumbling roller of the tumbling device in a preferred embodiment of the present invention is shown schematically.

[0047] Figure 10 A top view of the inclined track of the tumbling device for loose bark in a preferred embodiment of the present invention is shown schematically.

[0048] Figure 11 for Figure 10 A three-dimensional image.

[0049] The reference numerals used in the above figures are as follows:

[0050] 1-Shell, 2-Power mechanism, 3-Support mechanism, 4-Feed cover, 5-Tumbling roller, 6-Inclined track;

[0051] 11-Side wall, 12-First outlet, 13-Second outlet, 14-Baffle, 15-Guide plate, 16-First diameter reducing plate, 17-Second diameter reducing plate;

[0052] 21-Power component, 22-Connecting frame;

[0053] 31-Support surface, 32-Support frame;

[0054] 41-First feed inlet, 42-First feed hole, 43-Second feed inlet, 44-Second feed hole, 45-Handle, 46-Limiting component;

[0055] 51-Dough tumbling, 52-Rolling roller, 53-Shaft hole;

[0056] 61-slope;

[0057] S1 - Large orange; S2 - Small orange. Detailed Implementation

[0058] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented by a variety of different embodiments as defined and covered by the claims.

[0059] In the following description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and "vertical" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0060] In the following description of this invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0061] Furthermore, in the following description of the present invention, unless otherwise stated, "multiple", "multiple groups", and "multiple roots" mean two or more.

[0062] Figure 1 A schematic front view of the tumbling and loosening device according to a preferred embodiment of the present invention is shown. From Figure 1 As can be seen, in this preferred embodiment, the bottom of the tumbling and loosening device is a support mechanism 3 with a bracket structure, and the upper part of the support mechanism 3 is a housing 1. The upper part of the housing 1 is a feed cover 4, and the lower part is a power mechanism 2 that passes through the support mechanism 3 and connects to its center. This power mechanism 2 is a known existing power device with a rotating shaft, such as an electric motor. The specific model, specifications, and matching controller, reducer, and other components of the power mechanism 2 can be conventionally selected by those skilled in the art based on actual working conditions.

[0063] Figure 2 A top view schematically illustrates a preferred embodiment of the tumbling and loosening device of the present invention. From Figure 2As can be seen, in this preferred embodiment, the tumbling and loosening device includes two outlets, namely a first outlet 12 and a second outlet 13. The first outlet 12 processes larger oranges S1, while the second outlet 13 processes smaller oranges S2. The feed cover 4 has two feed ports, namely a first feed port 41 and a second feed port 43. Each feed port has a waist-shaped feed hole. The difference is that the size of the first feed hole 42 in the first feed port 41 is significantly larger than the size of the second feed hole 44 in the second feed port 43, so that the larger oranges S1 can enter the corresponding tumbling channel through the first feed hole 42. Figure 2 As can be seen from the diagram, the first feed inlet 42 is for the large orange S1 to pass through, while the second feed inlet 44 is for the small orange S2 to pass through. At the bottom of the annular sidewall 11 of the housing 1 is a rectangular support surface 31.

[0064] Figure 3 This diagram schematically illustrates a perspective view of the tumbling and loosening device according to a preferred embodiment of the present invention. From... Figure 3 As can be seen, in this preferred embodiment, the support mechanism 3 includes a support frame 32 at the bottom and a support surface 31 on the support frame 32. A housing 1 is mounted on the upper surface of the support surface 31, and a feed cover 4 with two weir-type inlets is fixedly installed on the inner side of the upper part of the annular sidewall 11 of the housing 1. An outlet is provided on each of the two opposite sides of the sidewall 11 of the housing 1, and the two outlets face opposite directions. After being washed and screened, the oranges enter the feed inlets of the corresponding sizes through the feed inlets on the feed cover 4 and enter the corresponding tumbling channels for tumbling and loosening the peel, and finally come out from the outlets. Overall, the device has a simple structure and can be divided into two production lines for peeling oranges of different diameters.

[0065] Figure 4 This diagram schematically illustrates a perspective view of the tumbling and loosening device according to a preferred embodiment of the present invention, viewed from below. Figure 4 As can be seen, in this preferred embodiment, a power mechanism 2 is fixedly connected to the bottom center of the support surface 31 of the tumbling and loosening device. The power component 21 of the power mechanism 2 is connected to the support surface 31 via a π-shaped connecting frame 22, which is fixedly connected to the support surface 31 by welding. A through hole (not shown) is provided in the center of the support surface 31, and a bearing is installed in the through hole. The output shaft of the power component 21 passes through the bearing and connects to the internal components of the housing 1. To ensure the stability of the power mechanism 2, a support component such as a pad can also be provided at the bottom of the power component 21.

[0066] Figure 5 The diagram schematically illustrates a top view of the tumbling and loosening device according to a preferred embodiment of the present invention, with the feed cover concealed. From... Figure 5As can be seen from this preferred embodiment, a wheel-shaped tumbling roller 5 is provided in the circular cavity of the side wall 11 of the housing 1. A tumbling channel for oranges to pass through is formed between the outer side surface (i.e., the tumbling surface) of the tumbling roller 5 and the inner wall of the side wall 11. As can be seen from the figure, this tumbling and loosening device has two tumbling channels, one for processing large oranges S1 with a larger diameter and the other for processing small oranges S2 with a smaller diameter. An arc-shaped ramp 6 is provided at the bottom of each tumbling channel as the bottom surface of the tumbling channel. A diameter-changing plate, namely a first diameter-changing plate 16 and a second diameter-changing plate 17, is provided on the side surface of the tumbling channel (specifically on the inner wall of the side wall 11) to change the width of the tumbling channel without changing the inner diameter of the annular side wall 11.

[0067] Figure 6 A schematic top view of the housing of the tumbling and loosening device according to a preferred embodiment of the present invention is shown. Figure 6 As can be seen, in this preferred embodiment, the sidewall 11 of the housing 1 has a circular structure with two outlets at opposite ends, namely the first outlet 12 and the second outlet 13. Each outlet consists of two parallel plates: a guide plate 15 extending along the tangent of the sidewall 11, and a partition plate 14 parallel to the guide plate 15. Two arc-shaped variable diameter plates, namely the first variable diameter plate 16 and the second variable diameter plate 17, are fixedly installed on the inner wall of the annular sidewall 11. As can be seen from the figure, the thickness of the first variable diameter plate 16 is significantly greater than the thickness of the second variable diameter plate 17. The tumbling and loosening device has a tumbling roller 5 coaxially mounted in the middle circular inner cavity of the housing 1. The width of the annular tumbling channel formed by the tumbling roller 5 and the inner wall of the sidewall 11 is originally annular. By setting the variable diameter plates, the width of the two annular tumbling channels can be changed, so that oranges with small diameter differences after screening can be effectively rolled. More importantly, by increasing the basic width of the first variable diameter plate 16, the tumbling channel it encloses can be effectively adapted to the smaller diameter orange S2. Furthermore, the thickness of the variable diameter plate itself gradually increases from the inlet to the outlet, thereby gradually reducing the width of the tumbling channel.

[0068] Figure 7 A perspective view of the feed cover of the tumbling and loosening device according to a preferred embodiment of the present invention is shown schematically. Figure 8 for Figure 7 A bottom view. From Figure 7 and Figure 8As can be seen, in this preferred embodiment, the feed cover 4 has a circular structure as its main body, with a handle 45 in the middle of its upper surface for easy lifting and installation. On both sides of the handle 4, there is a feed inlet corresponding to the starting section of the tumbling channel inside the housing 1, namely a first feed inlet 41 and a second feed inlet 42. The first feed inlet 41 has a waist-shaped first feed hole 42 for filling large oranges S1. Correspondingly, the second feed inlet 43 also has a waist-shaped second feed hole 44 for filling small oranges S2. Two elongated limiting members 46 are provided on the ground of the feed cover 4. When the feed cover 4 is fastened to the upper part of the tumbling roller 5, the feed cover 4 is supported by the tops of the two partitions 14 and the top of the variable diameter plate (without contacting the tumbling roller 5). Meanwhile, to prevent the feed cover 4 from rotating due to vibration during operation, the limiting member 46 will abut against the outside of the two partitions 14 after installation to achieve stability of the feed cover 4.

[0069] Figure 9 A perspective view of the tumbling roller of the tumbling device in a preferred embodiment of the present invention is shown schematically. From Figure 9 As can be seen, in this preferred embodiment, the tumbling roller 5 has a wheel-like structure, with a cylindrical rolling shaft 52 at its center. A shaft hole 53 is located at the bottom center of the rolling shaft 52, used to connect to the output shaft of the power component 21 to drive the entire tumbling roller 5 to rotate. A near-annular tumbling surface 51 is integrally connected to the outer circumference of the rolling shaft 52 via six connecting plates. The outer surface of the tumbling surface 51 has a continuously undulating, wave-like structure, allowing for variations in the tightness of the rolling pressure on the orange peel during rotation. Simultaneously, the protruding parts on the outer surface of the tumbling surface 51 can also be used to move the orange by applying pressure.

[0070] Figure 10 A top view of the inclined track of the tumbling device for loose bark in a preferred embodiment of the present invention is shown schematically. Figure 11 for Figure 10 A three-dimensional image. From Figure 10 and Figure 11 As can be seen, in this preferred embodiment, the ramp 6 is an arc-shaped structure with the same shape as the tumbling channel inside the housing 1. The thickness of the ramp 6 gradually decreases from the orange entry section to the exit end, thus forming an arc-shaped slope structure. In this way, the orange can automatically start rolling under the action of gravity after entering the tumbling channel. At the same time, the orange is further moved towards the exit by rotating the tumbling roller 5.

[0071] The working process of the above tumbling and loosening device is as follows:

[0072] After washing and sorting, the oranges, according to their size, are rolled into different inlets of the feed cover 4 through their respective sorting channels. Larger oranges S1 enter the tumbling channel through the first inlet 41, while smaller oranges S2 enter through the second inlet 43. After the oranges of different sizes enter the tumbling channels, the bottom surface of the channels is a sloped ramp 6. Simultaneously, the tumbling rollers 5 begin to rotate, moving the oranges along the tumbling channels. As the oranges move, the width of the tumbling channels decreases. The oranges are continuously subjected to rolling pressure from both sides of the tumbling channels, thus disrupting the tight bond between the peel and the pulp. This increases the gap between the two and reduces their bonding strength, making it easier for the oranges to be peeled in the next peeling process after exiting the outlet. After tumbling, oranges of different sizes exit from the outlet of the shell 1 and enter the subsequent peeling process.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tumbling and loosening device for orange peeling apparatus, characterized in that, include: The housing (1) has a circular inner cavity and at least one outlet; A support mechanism (3) is located at the bottom of the housing (1) and has at least one support surface (31); the housing (1) is mounted on the support surface (31); The feed cover (4) is installed on the upper part of the shell (1) and has the same number of feed ports as the shell (1) outlet; A tumbling roller (5) is rotatably installed in the circular inner cavity of the housing (1) and is provided with a tumbling surface (51); a tumbling channel for oranges to pass through is formed between the inner wall of the housing (1) and the tumbling surface (51); The power mechanism (2) is fixedly installed at the bottom of the support surface (31) and transmits power to the tumbling roller (5) through the support surface (31), and the tumbling roller (5) rotates under its drive; The tumbling roller (5) includes a rolling shaft (52) and a tumbling surface (51) integrally connected to the rolling shaft (52); the tumbling surface (51) is a wave-like outer circumferential surface that is continuously undulating around the rolling shaft (52); It also includes a ramp (6), which is located at the bottom of the tumbling channel and gradually decreases in thickness along the arc curve from the inlet to the outlet, forming a ramp that promotes the rolling of oranges; The theoretical diameter of the oranges entering the tumbling channel after sorting is D; the minimum width of the tumbling channel is 0.80D-0.99D. A variable diameter plate is provided on the inner wall of the shell (1); the variable diameter plate makes the width of the tumbling channel gradually decrease from the inlet to the outlet.

2. The tumbling and loosening device for orange peeling apparatus according to claim 1, characterized in that, The housing (1) has at least two outlets; the outlets include a guide plate (15) extending in the tangential direction along the side wall (11) of the housing (1) and a partition plate (14) opposite to the guide plate (15).

3. The tumbling and loosening device for orange peeling apparatus according to claim 2, characterized in that, The housing (1) has two outlets, each of which is provided with a guide plate (15) and a partition plate (14) arranged in parallel. The two partition plates (14) divide the annular area between the inner wall of the housing side wall (11) and the tumbling surface (51) of the tumbling roller (5) into two tumbling channels.

4. The tumbling and loosening device for orange peeling apparatus according to claim 3, characterized in that, The feed cover (4) includes a first feed inlet (41) and a second feed inlet (43); a first feed hole (42) is provided in the first feed inlet (41), and the first feed hole (42) is opposite to the starting section of the tumbling channel for tumbling large-diameter oranges; a second feed hole (44) is provided in the second feed inlet (43), and the second feed hole (44) is opposite to the starting section of the tumbling channel for tumbling small-diameter oranges.

5. The tumbling and loosening device for orange peeling apparatus according to claim 4, characterized in that, Two limiting members (46) are provided on both sides of the bottom surface of the feed cover (4); the limiting members (46) abut against the outer side of the two partitions (14) respectively, thereby stabilizing the feed cover (4) and preventing it from rotating due to vibration during use.

6. The tumbling and loosening device for orange peeling apparatus according to claim 1, characterized in that, A shaft hole (53) is provided at the lower center of the rolling shaft (52), and the output shaft of the power mechanism (2) is connected to the shaft hole (53).

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