A nut shelling machine

Abstract

This utility model relates to the field of food processing technology and provides a nut shelling machine, including a shelling machine body with a feeding hopper and a support plate inside the feeding hopper; it also includes a driving device, which includes a drive motor, a reducer, and a drive shaft. The drive motor is fixed to the side wall of the feeding hopper, and the drive shaft is rotatably mounted on the support plate and perpendicular to the support plate. The output end of the drive motor is connected to the drive shaft via the reducer; a screening plate is sleeved on the drive shaft, and the screening plate has multiple sets of through holes. Screening rings are detachably connected to the through holes, and the screening rings are used to adjust the diameter of the nuts that can pass through the through holes. The nut shelling machine provided by this utility model, by using a rotatable screening plate driven by a drive shaft and setting detachable and replaceable screening rings in its through holes, achieves rapid and accurate screening of nuts of different diameters, solving the problem of poor versatility of traditional equipment.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, and more specifically, to a nut shelling machine. Background Technology

[0002] In the food processing industry, nut shelling is a crucial step in the production process. Most existing nut shelling machines are designed for specific varieties or size ranges of nuts, and their feeding section typically uses fixed-diameter screens or grids. When processing mixed nuts of different types or significant size variations, these machines have obvious limitations: either they require tedious manual pre-sorting, increasing labor costs and impacting efficiency; or during the shelling stage, mismatches between nut size and the shelling mechanism (such as roller spacing) lead to incomplete shelling or increased kernel breakage, resulting in raw material waste and decreased product quality. Furthermore, fixed screening structures are prone to clogging during feeding, affecting production continuity. Therefore, the industry urgently needs an intelligent shelling device that can adapt to different nut sizes, achieve efficient continuous operation, and reduce kernel breakage. Utility Model Content

[0003] The problem this invention solves is: how to enable a nut shelling machine to filter nuts of different diameters.

[0004] To address the aforementioned problems, this utility model provides a nut shelling machine, comprising a shelling machine body with a feeding hopper and a support plate inside the feeding hopper; it also includes a driving device comprising a drive motor, a reducer, and a drive shaft, the drive motor being fixed to the side wall of the feeding hopper, the drive shaft being rotatably mounted on the support plate and perpendicular to the support plate, and the output end of the drive motor being connected to the drive shaft via the reducer; a screening plate is fitted onto the drive shaft, the screening plate having multiple sets of through holes, and a screening ring being detachably connected to each through hole, the screening ring being used to adjust the diameter of nuts that can pass through the through holes.

[0005] Optionally, the drive shaft has a polygonal cross-section, and the screening plate is provided with a groove that matches the cross-sectional shape of the drive shaft. The drive shaft cooperates with the groove to drive the screening plate to rotate.

[0006] Optionally, the inner wall of the feed hopper is provided with a plurality of fixed baffles, which are inclined to guide the movement of nuts and prevent clogging of the through hole.

[0007] Optionally, the screening ring is a ring structure, and its inner diameter can be designed to be changed according to the size of the nuts to be processed.

[0008] Optionally, the multiple sets of through holes on the screening plate are arranged in an array, and the screening rings installed in each set of through holes have the same or different diameters.

[0009] Optionally, the drive shaft passes through the screening plate and extends to the bottom of the feed hopper, and the screening plate is adjustable along the axial direction of the drive shaft.

[0010] Optionally, the reducer is one of a gear reducer or a worm gear reducer.

[0011] Optionally, the fixed paddles are evenly arranged circumferentially on the inner wall of the feed hopper, and the surface of the paddles is provided with anti-slip texture.

[0012] Optionally, the screening ring and the through hole are detachably connected by a threaded connection, a snap-fit ​​connection, or a plug-in connection.

[0013] Compared with the prior art, the nut shelling machine of this utility model has the following beneficial effects: This utility model provides a nut shelling machine that utilizes a rotatable screening plate driven by a drive shaft, with removable and replaceable screening rings installed within its through holes. This enables rapid and precise screening of nuts of different diameters, solving the problem of poor versatility in traditional equipment. Combined with a fixed baffle tilted within the feed hopper, it effectively guides the movement of the nuts, preventing blockages and ensuring continuous and stable production. Furthermore, by linking the adjustment of the screening plate's diameter with the spacing of the shelling rollers within the shelling machine body, nuts can undergo immediate shelling processing after size grading. The entire solution significantly improves the equipment's adaptability to different nuts, production efficiency, and automation level, demonstrating outstanding comprehensive benefits in reducing nut breakage, minimizing raw material waste, and saving on labor pre-sorting costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the nut shelling machine in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the feed hopper in an embodiment of this utility model. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction, specifically the left and right positions, with the positive direction of the X-axis representing the right side and the negative direction representing the left side. The Y-axis represents the front and back positions, with the positive direction of the Y-axis representing the rear and the negative direction representing the front. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for ease of description and simplification of the present invention, and do not indicate or imply that the device or component 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.

[0017] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in sequences other than those illustrated or described herein.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative embodiment of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0020] like Figures 1 to 2As shown, this utility model embodiment provides a nut shelling machine, including a shelling machine body 100, a feeding hopper 110 on the shelling machine body 100, and a support plate 111 inside the feeding hopper 110; it also includes a driving device, which includes a drive motor 200, a reducer 210 and a drive shaft 220. The drive motor 200 is fixed to the side wall of the feeding hopper 110, and the drive shaft 220 is rotatably mounted on the support plate 111 and is arranged perpendicular to the support plate 111. The output end of the drive motor 200 is connected to the drive shaft 220 through the reducer 210; a screening plate 101 is sleeved on the drive shaft 220, and the screening plate 101 has multiple sets of through holes 102. A screening ring 104 is detachably connected inside the through holes 102, and the screening ring 104 is used to adjust the diameter of the nuts that can pass through the through holes 102.

[0021] Nuts enter through the feed hopper 110 and fall onto the rotating screening plate 101. The drive motor 200 drives the drive shaft 220 to rotate via the reducer 210, thereby driving the screening plate 101 mounted on it to rotate. Nuts smaller than the inner diameter of the screening ring 104 fall through the through hole 102 into the shelling machine body 100 below for subsequent shelling under the action of centrifugal force and gravity; nuts larger than the inner diameter of the screening ring 104 are blocked on the screening plate 101 and continue to tumble until they are discharged from other outlets or further processed.

[0022] The detachable screening ring 104 enables rapid adaptation and screening of nuts of different sizes, significantly improving the equipment's versatility and flexibility in handling various materials. The screening function is integrated into the initial feeding stage, achieving integrated feeding and pre-sorting, simplifying the process, reducing manual pre-sorting steps, and improving automation and production efficiency. The modular design of the screening ring 104 facilitates maintenance and replacement, reducing equipment operating costs and downtime.

[0023] The drive shaft 220 has a polygonal cross-section, and the screening plate 101 is provided with a groove that matches the cross-sectional shape of the drive shaft 220. The drive shaft 220 cooperates with the groove to drive the screening plate 101 to rotate.

[0024] The multi-faceted drive shaft 220 is tightly fitted with a matching groove at the center of the screening plate 101. When the drive shaft 220 rotates, the torque is directly transmitted to the screening plate 101 through the meshing of its facets with the inner wall of the groove, driving it to rotate synchronously and without slippage. The fit between the multi-faceted shaft and the groove provides stable and reliable transmission, completely avoiding the slippage that may occur when using a round shaft, and ensuring the synchronicity and accuracy of the rotation of the screening plate 101.

[0025] The inner wall of the feed hopper 110 is provided with multiple fixed baffles 103. The fixed baffles 103 are inclined to guide the movement of nuts and prevent blockage of the through hole 102.

[0026] As the nuts fall into the feed hopper 110, they collide with the inclined fixed paddles 103 mounted on the inner wall. The inclined surface of the paddles 103 alters the falling trajectory of the nuts, causing them to laterally disperse and tumble, thus evenly distributing them onto the surface of the screening plate 101 and ensuring continuous flow. This effectively prevents nuts from accumulating and clogging above one or more through holes 102, ensuring the continuity and stability of the feeding and screening process.

[0027] The screening ring 104 is a ring structure, and its inner diameter can be changed according to the size of the nuts to be processed.

[0028] The operator selects a screening ring 104 with a matching inner diameter based on the target size range of the nuts to be processed, such as almonds, walnuts, and macadamia nuts, and installs or embeds it into the through hole 102 of the screening plate 101. By replacing the screening ring 104 with different inner diameters, the size of the target nuts can be precisely matched, achieving customized screening and optimizing the subsequent shelling effect.

[0029] Multiple sets of through holes 102 on the screening plate 101 are arranged in an array, and the screening rings 104 installed in each set of through holes 102 have the same or different diameters.

[0030] The array of through holes 102 makes the force and movement of the screening plate 101 more balanced. When all through holes 102 are fitted with screening rings 104 of the same diameter, a single level of screening is performed. When screening rings 104 of different diameters are fitted, the screening plate can achieve multi-level sorting in one rotation, with nuts of different sizes falling from different areas.

[0031] The array distribution ensures the stability and uniformity of the screening process, reducing vibration and noise.

[0032] The drive shaft 220 passes through the screen plate 101 and extends to the bottom of the feed hopper 110. The screen plate 101 is adjustable along the axial direction of the drive shaft 220.

[0033] The position of the screening plate 101 can be moved up and down along the axial direction of the drive shaft 220 by adjusting the fasteners. Adjusting the relative distance between the screening plate 101 and the bottom of the feed hopper 110 changes the thickness of the nut layer and the residence time on the screening plate 101. Adjusting the height of the screening plate 101 optimizes the nut screening time. For easily screened nuts, the distance can be reduced to speed up the process; for difficult-to-disperse nuts, the distance can be increased to extend the processing time, thereby improving adaptability to different materials.

[0034] The reducer 210 is one of a gear reducer or a worm gear reducer.

[0035] The reducer 210 receives the high-speed, low-torque output from the drive motor 200 and converts it into the low-speed, high-torque output required by the drive shaft 220 to smoothly drive the heavily loaded screening plate 101 to rotate. It provides a stable and reliable reduction ratio, ensuring that the screening plate 101 rotates at the optimal speed required by the process, with controllable and smooth speed.

[0036] Fixed paddles 103 are evenly arranged circumferentially on the inner wall of the feed hopper 110, and the surface of the paddles is provided with anti-slip texture.

[0037] The circumferentially evenly arranged paddles 103 ensure that nuts falling from any direction are agitated. The paddle surface with anti-slip texture increases friction with the nuts, especially those with smooth shells, enhancing the agitation and guiding effect. The circumferentially even arrangement achieves guidance without blind spots, further improving the uniformity and reliability of nut distribution and anti-clogging effect.

[0038] The screening ring 104 and the through hole 102 are detachably connected via threaded connection, snap-fit ​​connection, or plug-in connection. When the screening ring 104 is replaced to process nuts of different sizes, the spacing between the shelling rollers inside the shelling machine body 100 is also adjusted accordingly, either manually or in conjunction with the screen. This ensures that nuts falling from a specific diameter screening ring 104 can enter the shelling rollers with matching spacing for crushing and shelling. This intelligent linkage between screening size and shelling parameters ensures that nuts of each size receive the optimal shelling gap, which is crucial for reducing nut breakage and increasing the whole nut yield.

[0039] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A nut sheller characterized by, The device includes a shelling machine body (100), on which a feeding hopper (110) is provided, and a support plate (111) is provided inside the feeding hopper (110); it also includes a drive device, which includes a drive motor (200), a reducer (210) and a drive shaft (220), wherein the drive motor (200) is fixed to the side wall of the feeding hopper (110), and the drive shaft (220) is rotatably mounted on the support plate (111). It is set perpendicular to the support plate (111), and the output end of the drive motor (200) is connected to the drive shaft (220) through the reducer (210); a screening plate (101) is sleeved on the drive shaft (220), and multiple sets of through holes (102) are provided on the screening plate (101). A screening ring (104) is detachably connected in the through hole (102), and the screening ring (104) is used to adjust the diameter of the nuts that can pass through the through hole (102).

2. The nut sheller of claim 1, wherein, The drive shaft (220) has a polygonal cross-section, and the screening plate (101) is provided with a groove that matches the cross-sectional shape of the drive shaft (220). The drive shaft (220) cooperates with the groove to drive the screening plate (101) to rotate.

3. The nut shelling machine according to claim 1, characterized in that, The inner wall of the feed hopper (110) is provided with a plurality of fixed paddles (103), which are inclined to guide the movement of nuts and prevent blockage of the through hole (102).

4. The nut shelling machine according to claim 1, characterized in that, The screening ring (104) is a ring structure, and its inner diameter can be changed according to the size of the nuts to be processed.

5. The nut shelling machine according to claim 1, characterized in that, The multiple sets of through holes (102) on the screening plate (101) are arranged in an array, and the screening rings (104) installed in each set of through holes (102) have the same or different diameters.

6. The nut shelling machine according to claim 1, characterized in that, The drive shaft (220) passes through the screening plate (101) and extends to the bottom of the feed hopper (110). The screening plate (101) is adjustable along the axial direction of the drive shaft (220).

7. The nut shelling machine according to claim 1, characterized in that, The reducer (210) is one of a gear reducer or a worm gear reducer.

8. The nut shelling machine according to claim 3, characterized in that, The fixed paddles (103) are evenly arranged circumferentially on the inner wall of the feed hopper (110), and the surface of the paddles is provided with anti-slip texture.

9. The nut shelling machine according to claim 1, characterized in that, The screening ring (104) and the through hole (102) are detachably connected by threaded connection, snap-fit ​​connection or plug-in connection.

Images