Early-stage skin pretreatment device for fried nut raw materials
By combining support components and movable components, the clamping spacing and cutting depth can be dynamically adjusted, solving the problem of uneven nut cutting in existing technologies. This achieves efficient and stable cutting of nut shells, making it suitable for large-scale production of fried nuts such as walnuts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-03-10
AI Technical Summary
Existing walnut peeling devices are prone to rolling or shifting during the cutting process due to irregular nut shapes or uneven pushing force. Furthermore, the fixed blade spacing cannot be dynamically adjusted, leading to uneven cutting or the risk of nut damage.
The design combines support and moving parts. The support is equipped with a conveyor and a cutting component, while the moving part is equipped with a transmission conveyor. The transmission conveyor is driven to descend by a telescopic cylinder to form an upper and lower clamp. Combined with the cutting component with a cross guide rail structure, the clamping distance and cutting depth can be dynamically adjusted to adapt to different nut skin thicknesses.
It improves the stability and consistency of the nut cutting process, reduces the risk of kernel damage, and enhances pre-processing efficiency and the uniformity of large-scale production.
Smart Images

Figure CN223979385U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shelling assistance technology, specifically to a pre-treatment device for the outer skin of fried nut raw materials. Background Technology
[0002] Many nuts require the removal of their outer skin after harvesting before further processing. Walnuts, for example, have become a popular dried fruit among consumers. Regular consumption of walnuts can supplement brain nutrition, thus protecting brain cells and enhancing memory. However, every year during the walnut harvest season, walnut growers not only worry about the harvest's success but also face a major headache: removing the green husks from the walnuts.
[0003] Utility model patent CN220987537U discloses a pre-treatment device for removing the outer skin of nuts, including a support track, a pushing mechanism, and a cutting component. The support track supports the movement of green walnuts, the pushing mechanism pushes the green walnuts from one end to the other on the support track, and the cutting component cuts at least one slit in the green walnuts moving on the support track. By completing the pre-opening step for peeling green walnuts, compared to manual opening, this device only requires placing the green walnuts on the support track, greatly reducing the risk and significantly improving the cutting efficiency.
[0004] However, existing pre-processing devices move nuts by pushing them with pushers at the bottom of the support rail. But the support rail has a V-shaped groove in its vertical cross-section, relying solely on the pushers from below without an upper clamping structure. This causes the nuts to easily roll or shift during cutting due to their irregular shape or uneven pushing force. This is especially problematic for round or oval nuts, potentially leading to deviations in the cut position or inconsistent cutting depth. Furthermore, the fixed blade spacing of the cutting component, where the minimum distance between blades is less than the outer diameter of the green walnut under natural conditions, relies solely on a push spring for elastic cushioning. It cannot dynamically adjust the clamping spacing according to the actual size of the nuts. For nuts of different varieties or ripeness, there is a risk of cutting too deeply and damaging the kernel, or cutting too shallowly and resulting in incomplete pre-treatment of the outer skin. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a pre-treatment device for the outer skin of fried nut raw materials, thus solving the aforementioned problems.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a pre-treatment device for the outer skin of fried nut raw materials, comprising:
[0007] A support member, on which a conveyor belt is provided for moving the nut raw materials;
[0008] A cutting component, which is installed at the upper middle part of the support, is used to pre-treat the skin of the nut raw material;
[0009] The movable component is located above the support component and is equipped with a transmission and conveying component. The transmission and conveying component corresponds to the belt conveyor component. The transmission and conveying component cooperate with the belt conveyor component to clamp and limit the nut raw material when it is moved, so as to stably cut the nut raw material.
[0010] Preferably, the support includes a support frame, with a plurality of dovetail sliders evenly spaced on the back of the support frame, and a plurality of telescopic cylinders evenly spaced on the bottom of the support frame, the output end of the telescopic cylinders being connected to the movable frame.
[0011] Preferably, the upper end of the support frame is provided with a conveyor belt, which consists of two guide rollers and a conveyor belt. The input end of one of the guide rollers is connected to a drive motor. The outer surface of the conveyor belt is provided with multiple protrusions at equal intervals to drive the nut raw materials to move. A baffle is fixed to the upper front end of the support frame to prevent the nut raw materials from falling.
[0012] Preferably, the cutting component includes an extension plate fixed to the center of the front of the upper end of the support frame. A cross guide rail is mounted on the upper surface of the extension plate. A driver is connected to the movable end of the cross guide rail, and a cutter is connected to the output end of the driver for cutting the nut raw material.
[0013] Preferably, the movable component includes a movable frame, on which a transmission and conveying component is provided. The transmission and conveying component consists of two guide rollers and a conveyor belt, and the input end of one of the guide rollers is connected to a drive motor.
[0014] Preferably, a guide plate is fixed to the back of the movable frame, and a plurality of dovetail grooves are fixed to the inner side of the guide plate. The dovetail grooves are adapted to the dovetail slider, and the bottom end of the guide plate is connected to the output end of the telescopic cylinder.
[0015] Beneficial effects
[0016] This invention provides a pretreatment device for the outer skin of fried nut raw materials. Compared with the prior art, it has the following advantages:
[0017] 1. This pre-treatment device for the outer skin of fried nuts forms an upper and lower clamping surface through the transmission and conveying components of the moving parts and the belt conveying components of the supporting parts. The transmission and conveying components can be driven to descend by a telescopic cylinder, and the spacing can be dynamically adjusted according to the size of the nuts. With the cooperation of the protrusions on the outer surface of the belt to contact the surface of the nuts, stable clamping of nuts of different sizes can be achieved. This not only improves the stability of the nuts during the cutting process, but also allows for precise adjustment of the cutting depth by controlling the stroke of the cylinder, adapting to the outer skin thickness of different varieties of nuts and reducing the risk of damage to the kernels.
[0018] 2. This pre-treatment device for the outer skin of fried nuts features a cross-guided structure for the cutting component. The driver can move the cutter in both horizontal and vertical directions, enabling precise multi-angle cutting of the nut skin. Compared to the fixed cutter in existing technologies, this device can adjust the cutting path according to the curved shape of the nut, ensuring uniform cuts and consistent depth. Meanwhile, the transmission and conveying components of the support and moving parts are controlled by independent drive motors, allowing for synchronous adjustment of conveying speed and cutting rhythm, forming a linked operation process. The evenly spaced protrusions ensure that the nuts maintain a fixed interval during conveying, facilitating orderly processing by the cutting components and significantly improving pre-treatment efficiency and consistency in large-scale production. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0020] Figure 2 This is a schematic diagram of the overall structure of this utility model from the back.
[0021] Figure 3 This is a schematic diagram of the support structure of this utility model.
[0022] Figure 4 This is a schematic diagram of the movable component structure of this utility model.
[0023] In the figure: support component 1, support frame 11, dovetail slider 12, telescopic cylinder 13, conveyor belt 14, protrusion 15, baffle 16, cutting component 2, extension plate 21, cross guide rail 22, driver 23, cutter 24, movable component 3, movable frame 31, transmission and conveying component 32, guide plate 33, dovetail slide 34. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-4 This utility model provides two technical solutions:
[0026] The first embodiment: a pre-treatment device for the outer skin of fried nut raw materials, including a support 1, a cutting component 2 and a movable component 3.
[0027] Specifically, the support member 1 is equipped with a conveyor belt 14 for moving the nut raw materials. The support member 1 includes a support frame 11. Multiple dovetail sliders 12 with equal spacing are fixed on the back of the support frame 11. Multiple telescopic cylinders 13 with equal spacing are fixed on the bottom of the support frame 11. The output end of the telescopic cylinder 13 is connected to the movable frame 31. The upper end of the support frame 11 is equipped with a conveyor belt 14, which consists of two guide rollers and a conveyor belt. The input end of one of the guide rollers is connected to a drive motor. Multiple protrusions 15 with equal spacing are arranged on the outer surface of the conveyor belt for moving the nut raw materials. A baffle 16 is fixed on the upper front end of the support frame 11 to prevent the nut raw materials from falling.
[0028] More specifically, the cutting component 2 is installed at the upper middle part of the support component 1 for pre-processing the skin of the nut raw material. The cutting component 2 includes an extension plate 21 fixed at the upper front middle part of the support frame 11. A cross guide rail 22 is installed on the upper surface of the extension plate 21. The movable end of the cross guide rail 22 is connected to a driver 23. The output end of the driver 23 is connected to a cutter 24 for cutting the nut raw material.
[0029] The second embodiment differs from the first embodiment in that: the movable component 3 is located above the support component 1, and a transmission conveyor 32 is provided on the movable component 3. The transmission conveyor 32 corresponds to the belt conveyor 14. The transmission conveyor 32 and the belt conveyor 14 cooperate to clamp and limit the nut raw material when moving it, so as to stably cut the nut raw material. The movable component 3 includes a movable frame 31, and the transmission conveyor 32 is provided on the movable frame 31. The transmission conveyor 32 consists of two guide rollers and a conveyor belt, and the input end of one of the guide rollers is connected to a drive motor. A guide plate 33 is fixed on the back of the movable frame 31. Multiple dovetail grooves 34 are fixed on the inner side of the guide plate 33. The dovetail grooves 34 are adapted to the dovetail slider 12, and the bottom end of the guide plate 33 is connected to the output end of the telescopic cylinder 13.
[0030] During operation, the conveyor belt 14 of the support member 1 is driven by a motor to rotate the guide rollers. The protrusions 15 on the conveyor belt push the nut material along the support frame 11. The transmission conveyor 32 of the movable member 3 is driven downwards by the telescopic cylinder 13. Its conveyor belt forms an upper and lower clamping surface with the belt of the support member 1, and the protrusions 15 contact the nut surface, ensuring the material remains stable and slip-free during cutting. The cross guide rail 22 of the cutting member 2 drives the driver 23 and the cutter 24 to move horizontally and vertically, achieving precise cutting of the nut skin. The cutter 24 uses an inclined blade, and the cutting depth can be adjusted by the driver 23 to adapt to the skin thickness requirements of different nut varieties. When the nut moves to the cutting area with the conveyor, the cutter 24 quickly cuts into the skin, completing the pre-treatment. The telescopic cylinder 13 adjusts the height of the movable member 3 according to the size of the nut, so that the distance between the transmission conveyor 32 and the conveyor belt 14 adapts to different material thicknesses.
[0031] This device combines mechanical transmission with intelligent adjustment to solve the problems of low efficiency and poor consistency in traditional manual pre-processing. It is suitable for large-scale production scenarios in nut processing enterprises, and is especially suitable for treating surface cracks before frying, thereby improving the uniformity of subsequent frying and the yield of finished products.
[0032] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for pre-treatment of the skin of a nut raw material prior to frying, characterized in that, Include: Support, provided with belt conveying element for moving nut raw materials; Cutting element, installed in the upper end of the support, for pretreatment of the skin of the nut raw materials; Movable element, located above the support, provided with transmission conveying element corresponding to the belt conveying element, which cooperates with the belt conveying element to clamp and limit the nut raw materials when moving, and stabilize the cutting of the nut raw materials.
2. The pre-treatment device for the skin of the pre-frying nuts according to claim 1, characterized in that: The support includes a support frame, the back of which is fixed with a plurality of equally spaced dovetail sliding blocks, and the bottom end of which is fixed with a plurality of equally spaced telescopic cylinders, and the output end of the telescopic cylinder is connected with the movable frame.
3. The pre-treatment device for the skin of the pre-frying nuts according to claim 2, characterized in that: The upper end of the support is provided with a belt conveying element composed of two guide rollers and a conveyor belt, and the input end of one of the guide rollers is connected with a driving motor, and the outer surface of the conveyor belt is provided with a plurality of protrusions at equal intervals for moving the nut raw materials, and the front upper end of the support is fixed with a baffle for preventing the nut raw materials from falling off.
4. The pre-treatment device for the skin of the pre-frying nuts according to claim 1, characterized in that: The cutting element includes an extension plate fixed on the front upper end of the support, and a cross guide rail is installed on the upper surface of the extension plate, and the movable end of the cross guide rail is connected with a driver, and the output end of the driver is connected with a cutter for cutting the nut raw materials.
5. The pre-treatment device for the skin of the pre-frying nuts according to claim 1, characterized in that: The movable element includes a movable frame provided with a transmission conveying element composed of two guide rollers and a conveyor belt, and the input end of one of the guide rollers is connected with a driving motor.
6. The pre-treatment device for the skin of the pre-frying nuts according to claim 5, characterized in that: The back of the movable frame is fixed with a guide plate, and the inner side of the guide plate is fixed with a plurality of equally spaced dovetail sliding grooves, which are matched with the dovetail sliding blocks, and the bottom end of the guide plate is connected with the output end of the telescopic cylinder.
Citation Information
Patent Citations
A pre-treatment device for removing nut skin
CN220987537U