A multi-stage shelling machine for hazelnuts

Abstract

The utility model provides a kind of multistage peeling's hazelnut sheller belongs to hazelnut shelling technical field;Including: shelling machine rack, still include: large hazelnut shelling subassembly, large hazelnut shelling subassembly is set on the upper wall surface of shelling machine rack;First grade screen subassembly, first grade screen subassembly movably set in the inside of shelling machine rack, and first grade screen subassembly is located below large hazelnut shelling subassembly;Small hazelnut shelling subassembly, small hazelnut shelling subassembly is set in the middle of shelling machine rack;The overall advantage of the utility model is that the hazelnut shelling of high efficiency, low breakage is realized, through multistage grading processing, adapt to different size hazelnut, improve production efficiency and product quality.The overall device structure is compact, degree of automation is high, reduces manual cost, applicable to large-scale continuous production.

Description

Technical Field

[0001] This utility model belongs to the field of hazelnut shelling technology, specifically relating to a multi-stage hazelnut shelling machine. Background Technology

[0002] Hazelnut shelling machines are used to remove the outer shells of hazelnuts to obtain edible hazelnut kernels. They are used in food processing, agricultural production, and the initial processing of agricultural products. The development of hazelnut shelling machinery stems from the demand for efficiency and quality in nut processing. As consumer demand for nut kernels grows, traditional manual shelling methods can no longer meet the requirements of large-scale production, making mechanical shelling equipment crucial.

[0003] Common technical problems in this field include: First, low shelling efficiency. Due to the varying sizes of hazelnuts, a single shelling mechanism often cannot handle hazelnuts of different diameters simultaneously, resulting in small hazelnuts remaining unshelled or large hazelnuts experiencing high breakage rates, leading to resource waste. Second, significant breakage. During mechanical shelling, rollers or extrusion mechanisms can easily apply excessive force, causing kernel breakage and affecting commercial value. Third, insufficient grading capabilities. Many existing devices lack effective screening systems, requiring additional manual sorting after mixed shelling, increasing labor costs and time. These problems stem from the simplistic mechanical structure, failing to adapt to the physical characteristics of hazelnuts in their design. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a multi-stage hazelnut shelling machine, comprising: a shelling machine frame, and further comprising: a large hazelnut shelling assembly disposed on the upper wall of the shelling machine frame; a primary screening assembly movably disposed inside the shelling machine frame and located below the large hazelnut shelling assembly; a small hazelnut shelling assembly disposed in the middle of the shelling machine frame; a secondary screening assembly movably disposed inside the shelling machine frame and located below the small hazelnut shelling assembly; and a power assembly disposed on the upper wall of the shelling machine frame; the large hazelnut shelling assembly includes: a large hazelnut shelling... The machine consists of a frame, with the large hazelnut shelling frame fixedly mounted on the upper wall of the frame; two No. 1 shelling rollers, one of which is fixedly mounted inside the large hazelnut shelling frame via a support base, and the other of which is movably mounted inside the large hazelnut shelling frame via a support base, with the relative positions of the No. 1 and No. 2 shelling rollers, one of which is fixedly mounted inside the large hazelnut shelling frame via a support base, and the other of which is movably mounted inside the large hazelnut shelling frame via a support base, with the relative positions of the No. 2 and No. 2 shelling rollers located below the No. 1 shelling rollers.

[0005] Preferably, the primary screening assembly includes: a primary screening screen, which is movably disposed inside the shelling machine frame; and a primary screening power shaft, which is movably disposed on the side wall of the shelling machine frame via bearings, and the primary screening power shaft is movably connected to the primary screening screen via a connecting rod.

[0006] Preferably, the small hazelnut shelling assembly includes: a small hazelnut shelling frame, which is fixedly mounted on the upper wall of the shelling machine frame; two No. 3 shelling rollers, one of which is fixedly mounted inside the small hazelnut shelling frame via a support base, and the other of which is movably mounted inside the small hazelnut shelling frame via a support base, and the relative positions of the No. 3 shelling rollers inside the small hazelnut shelling frame can be adjusted by screws; and two No. 4 shelling rollers, one of which is fixedly mounted inside the small hazelnut shelling frame via a support base, and the other of which is movably mounted inside the small hazelnut shelling frame via a support base, and the relative positions of the No. 4 shelling rollers inside the small hazelnut shelling frame can be adjusted by screws, and the two No. 4 shelling rollers are located below the No. 3 shelling rollers.

[0007] Preferably, the secondary screening assembly includes: a secondary screening screen, which is movably disposed inside the shelling machine frame; and a secondary screening power shaft, which is movably disposed on the side wall of the shelling machine frame via bearings, and the secondary screening power shaft is movably connected to the secondary screening screen via a connecting rod.

[0008] Preferably, the upper wall of the large hazelnut shelling rack is provided with a feeding hopper.

[0009] Preferably, the power assembly includes: a power motor mounted on the upper wall of the shelling machine frame; two transmission flywheels, respectively mounted on the outer ends of the second and fourth shelling rollers, the two transmission flywheels being connected to the drive end of the power motor via a belt; and a plurality of transmission gears, respectively mounted on the outer ends of the first, second, first-stage screening power shaft, third, fourth, and second-stage screening power shafts, the transmission gears of the two first, two second, and first-stage screening power shafts being connected via gear belts, allowing the two first and second shelling rollers to rotate relative to each other, and the transmission gears of the two third, two fourth, and second-stage screening power shafts being connected via gear belts, allowing the two third and fourth shelling rollers to rotate relative to each other.

[0010] Preferably, the upper wall of the small hazelnut shelling rack is provided with a connecting collection hopper.

[0011] Preferably, the outer walls of the two No. 1 shelling rollers and the two No. 2 shelling rollers are provided with friction grooves.

[0012] Preferably, the outer walls of the two No. 3 and the two No. 4 dehulling rollers are provided with friction grooves.

[0013] This utility model discloses a multi-stage hazelnut shelling machine, which, compared with existing technologies, offers the following advantages: The overall advantage of this multi-stage hazelnut shelling machine lies in achieving efficient and low-damage hazelnut shelling. Through multi-stage grading, it adapts to hazelnuts of different sizes, improving production efficiency and product quality. The overall device has a compact structure, a high degree of automation, reduces labor costs, and is suitable for large-scale continuous production.

[0014] This device solves the problem that a single dehulling mechanism cannot handle hazelnuts of different sizes by using a large-sized hazelnut dehulling component. It achieves efficient dehulling of large-diameter hazelnuts, avoids small hazelnuts being missed or over-compressed, and has a high dehulling rate.

[0015] This device solves the problem of the mixture after shelling not being able to be automatically graded through a primary screening component, achieving the effect of preliminary separation of the shell and kernel, ensuring that only unshelled small hazelnuts enter the next stage, and reducing the burden of subsequent processing.

[0016] This device solves the problem of difficult dehulling of small-diameter hazelnuts by using a small-sized hazelnut dehulling component, achieving a fine dehulling effect. The roller gap is adjustable, minimizing the breakage rate and improving the integrity rate of dehulling small hazelnuts.

[0017] This device solves the problem of shell residue in the final product through a two-stage sieving component, achieving a complete separation of kernel and shell, improving kernel purity, reducing the need for manual sorting, and increasing product qualification rate. Attached Figure Description

[0018] Figure 1 A schematic diagram of the first overall structure of the multi-stage hazelnut shelling machine provided by this utility model; Figure 2 A schematic diagram of the second integral structure of the multi-stage hazelnut shelling machine provided by this utility model; Figure 3 A partial structural diagram of the multi-stage hazelnut shelling machine provided by this utility model; Figure 4 A second partial structural schematic diagram of the multi-stage hazelnut shelling machine provided by this utility model; in, Figures 1 to 4 The attached diagram shows the following components of a multi-stage hazelnut shelling machine: 1. Shelling machine frame; 2. Large hazelnut shelling frame; 3. Shelling roller No. 1; 4. Shelling roller No. 2; 5. Primary screening screen; 6. Primary screening drive shaft; 7. Small hazelnut shelling frame; 8. Shelling roller No. 3; 9. Shelling roller No. 4; 10. Secondary screening screen; 11. Secondary screening drive shaft; 12. Power motor; 13. Transmission flywheel; 14. Transmission gear; 15. Connecting collection hopper; 16. Feed hopper. Detailed Implementation

[0019] The following are specific implementation cases and appendices. Figures 1-4This invention provides a multi-stage hazelnut shelling machine, comprising: a shelling machine frame 1; a large hazelnut shelling component disposed on the upper wall of the shelling machine frame 1 for processing larger hazelnuts; and a primary screening component movably disposed inside the shelling machine frame 1, located below the large hazelnut shelling component, capable of separating the shelled hazelnut kernels and nut shells through vibration or a screen. Shell fragments; a small hazelnut shelling assembly, located in the middle of the shelling machine frame 1, specifically for processing smaller hazelnuts; a secondary screening assembly, movably located inside the shelling machine frame 1 and below the small hazelnut shelling assembly, for further refining the screening of hazelnut kernels and residual shells; a power assembly, located on the upper wall of the shelling machine frame 1, providing mechanical drive to operate the shelling rollers and screening assembly; and a large hazelnut shelling assembly including: a large hazelnut shelling frame 2, and a large hazelnut... The primary shelling frame 2 is fixedly mounted on the upper wall of the shelling machine frame 1 as a support structure; two primary shelling rollers 3, one of which is fixedly mounted inside the primary shelling frame 2 via a support base, and the other of which is movably mounted inside the primary shelling frame 2 via a support base, and the primary shelling rollers 3 can be adjusted in relative position inside the primary shelling frame 2 via screws to achieve precise adjustment of the roller spacing; two secondary shelling rollers 4, one of which is fixedly mounted inside the primary shelling frame 2 via a support base. Inside frame 2, another second shelling roller 4 is movably mounted inside the large hazelnut shelling frame 2 via a support base. The relative position of the second shelling roller 4 inside the large hazelnut shelling frame 2 can be adjusted by screws. The two second shelling rollers 4 are located below the first shelling roller 3, forming a multi-stage crushing mechanism. The upper wall of the large hazelnut shelling frame 2 is provided with a feeding hopper 16 to facilitate the input of hazelnut raw materials. The outer walls of the two first shelling rollers 3 and the two second shelling rollers 4 are provided with friction grooves to increase surface roughness for efficient peeling of hazelnut shells.

[0020] As a preferred embodiment, the primary screening assembly further includes: a primary screening screen 5, which is movably disposed inside the shelling machine frame 1 and can move along a specific trajectory to perform preliminary separation of materials; and a primary screening power shaft 6, which is movably disposed on the side wall of the shelling machine frame 1 via bearings, enabling smooth rotational motion. The primary screening power shaft 6 is movably connected to the primary screening screen 5 via a rigid connecting rod, thereby converting the rotation of the shaft into the reciprocating motion of the screen, ensuring an efficient screening process.

[0021] As a preferred embodiment, the small hazelnut shelling assembly further includes: a small hazelnut shelling frame 7, made of high-strength metal and firmly fixed to the upper wall of the shelling machine frame 1 by welding, ensuring the stability and load-bearing capacity of the overall structure; two No. 3 shelling rollers 8, one No. 3 shelling roller 8 is fixed inside the small hazelnut shelling frame 7 by a bolted support, and the other No. 3 shelling roller 8 is movably set inside the small hazelnut shelling frame 7 by a slidable support. The relative position of the No. 3 shelling roller 8 inside the small hazelnut shelling frame 7 can be adjusted on a preset track by a precision adjusting screw to adapt to the shelling needs of hazelnuts of different sizes; and two No. 4 shelling rollers 9, one of which is also fixed to the small hazelnut shelling frame 1 by a bolted support. Inside the smaller hazelnut shelling frame 7, another fourth shelling roller 9 is also movably mounted inside the smaller hazelnut shelling frame 7 via a sliding support. The fourth shelling roller 9 can be adjusted in relative position inside the smaller hazelnut shelling frame 7 via a precision adjusting screw on a preset track to provide flexible gap control. The two fourth shelling rollers 9 are precisely positioned below the third shelling roller 8, forming a continuous shelling process to ensure efficient downward conveying of hazelnuts. The upper wall of the smaller hazelnut shelling frame 7 is provided with a connecting collection hopper 15, which is connected to downstream processing equipment via a flange interface for easy collection of shelled hazelnut kernels. The outer walls of the two third shelling rollers 8 and the two fourth shelling rollers 9 are all provided with friction grooves of uniform depth. These grooves adopt a sawtooth design to enhance frictional contact with the surface of the hazelnuts and effectively improve shelling efficiency.

[0022] As a preferred embodiment, the secondary screening assembly further includes: a secondary screening screen 10, which is movably mounted inside the shelling machine frame 1 via a specific installation structure and can reciprocate or vibrate within a set range to achieve the screening function; a secondary screening power shaft 11, which is movably mounted on the side wall of the shelling machine frame 1 via a bearing seat and bearing, serving as the core for power input and transmission; and a connecting mechanism, on which a crank is fixedly mounted on the secondary screening power shaft 11 and is movably connected to the secondary screening screen 10 via a rigid connecting rod, thereby effectively converting the rotational motion of the power shaft into the specific trajectory motion required by the screen.

[0023] As a preferred embodiment, the power assembly further includes: a power motor 12, which is fixedly mounted on the upper wall of the shelling machine frame 1 to provide initial driving force; two transmission flywheels 13, which are precisely positioned at the outer ends of the second shelling roller 4 and the fourth shelling roller 9, respectively, and are directly connected to the drive end of the power motor 12 via high-strength belts to achieve efficient transmission; and several transmission gears 14, which are respectively tightly mounted on the first shelling roller 3, the second shelling roller 4, the primary screening power shaft 6, the third shelling roller 8, the fourth shelling roller 9, and... The outer end of the secondary screening power shaft 11, and the transmission gears 14 of the two No. 1 dehulling rollers 3, the two No. 2 dehulling rollers 4, and the primary screening power shaft 6 are connected by a precision gear belt for coordinated transmission, ensuring that the two No. 1 dehulling rollers 3 rotate relative to each other in opposite directions, and at the same time, the two No. 2 dehulling rollers 4 also rotate relative to each other in opposite directions. The two No. 3 dehulling rollers 8, the two No. 4 dehulling rollers 9, and the transmission gears 14 of the secondary screening power shaft 11 are connected by another set of gear belts for synchronous transmission, ensuring that the two No. 3 dehulling rollers 8 rotate relative to each other in opposite directions, and at the same time, the two No. 4 dehulling rollers 9 rotate relative to each other in opposite directions.

[0024] Working Principle: When using this device, the operator first connects an external AC power supply to the device to provide power to the motor 12, and installs a matching controller to provide control and operating logic for the motor 12. During shelling, hazelnuts are divided into four sizes according to diameter: No. 1, No. 2, No. 3, and No. 4, with No. 1 being the largest and No. 4 the smallest. The operator adjusts the relative position of the movable No. 1 shelling roller 3 support to the large hazelnut shelling frame 2 using screws, allowing No. 2, No. 3, and No. 4 hazelnuts to pass through the gap between the two No. 1 shelling rollers 3, thus breaking the shell of the No. 1 hazelnut. Similarly, the operator adjusts the relative position of the movable No. 2 shelling roller 4 support to the large hazelnut shelling frame 2 using screws, allowing No. 3 and No. 4 hazelnuts to pass through the gap between the two No. 2 shelling rollers 4, thus breaking the shell of the No. 2 hazelnut. Furthermore, the gaps in the primary sieve 5 allow the passage of hazelnut shells (number 1), hazelnut kernels (number 1), hazelnut shells (number 2), and hazelnut kernels (number 2), while hazelnuts (number 3 and number 4 with shells) cannot pass through. The secondary sieve 10 allows the passage of hazelnut shells (number 3 and number 4), while retaining hazelnut kernels (number 3 and number 4) on the secondary sieve 10.

[0025] When using this device, the operator first starts the power motor 12. The drive end of the power motor 12 rotates, causing two transmission flywheels 13 to rotate via belt transmission. These flywheels drive the fixed No. 2 shelling roller 4 and No. 4 shelling roller 9 to rotate. The rotation of the No. 2 shelling roller 4 drives the transmission gear 14 installed on the outside of the No. 2 shelling roller 4 to rotate. The transmission gear 14 then drives the two No. 1 shelling rollers 3, the No. 2 shelling roller 4, and the primary screening power shaft 6 to rotate. The two No. 1 shelling rollers 3 and the two No. 2 shelling rollers 4 rotate inward simultaneously. The primary screening power shaft 6 drives the primary screening screen 5 to screen via a connecting rod. The rotation of the fourth shelling roller 9 drives the transmission gear 14 installed outside the fourth shelling roller 9 to rotate, and the transmission gear 14 drives the two third shelling rollers 8, the fourth shelling roller 9 and the secondary screening power shaft 11 to rotate. The two third shelling rollers 8 rotate inward at the same time, the two fourth shelling rollers 9 rotate inward at the same time, and the secondary screening power shaft 11 drives the secondary screening screen 10 to screen through the connecting rod.

[0026] The operator puts hazelnuts No. 1, No. 2, No. 3, and No. 4 into the feed hopper 16. The hazelnuts enter the two No. 1 shelling rollers 3 and two No. 2 shelling rollers 4. The No. 1 and No. 2 hazelnuts are shelled, while the No. 3 and No. 4 hazelnuts fall intact into the primary screening screen 5. When passing through the primary screening screen 5, the gaps in the primary screening screen 5 allow the No. 1 hazelnut shell, No. 1 hazelnut kernel, No. 2 hazelnut shell, and No. 2 hazelnut kernel to pass through and fall into the collection net, which is located below the primary screening screen 5. Hazelnuts with shells No. 3 and No. 4 cannot pass through to the connecting collection hopper 15. Instead, they enter the two rotating No. 3 shelling rollers 8 and two No. 4 shelling rollers 9, where their shells are broken and they fall into the secondary sieve 10. The secondary sieve 10 allows the shells of hazelnuts No. 3 and No. 4 to pass through, retaining the kernels of hazelnuts No. 3 and No. 4 on the sieve. At this point, the hazelnuts are broken and classified by size according to their diameter.

[0027] Example: This multi-stage hazelnut shelling machine mainly includes a shelling machine frame 1, a large hazelnut shelling assembly, a primary screening assembly, a small hazelnut shelling assembly, a secondary screening assembly, a power assembly, and auxiliary components such as a connecting collection hopper 15 and a feeding hopper 16.

[0028] Mechanical structure components: The shelling machine frame 1 serves as the basic support structure and is usually welded from steel. Its dimensions can be customized according to production needs, for example, length × width × height of 2000mm × 1000mm × 1500mm. The bottom of the frame is equipped with casters or fixed feet for easy movement or installation.

[0029] The large hazelnut shelling assembly is located on the upper wall of the shelling machine frame 1 and is used to process larger diameter hazelnuts (such as No. 1 and No. 2 hazelnuts). This assembly includes a large hazelnut shelling frame 2, two No. 1 shelling rollers 3, and two No. 2 shelling rollers 4. The large hazelnut shelling frame 2 is bolted to the upper wall of the frame and has internal supports for mounting the shelling rollers. Of the two No. 1 shelling rollers 3, one is mounted via a fixed support, and the other via a movable support. The movable support can be adjusted by screws, thereby changing the gap between the two No. 1 shelling rollers 3 to accommodate different hazelnut sizes. Similarly, the two No. 2 shelling rollers 4 are installed inside the large hazelnut shelling frame 2, below the No. 1 shelling rollers 3, and their gap is also adjustable. All shelling rollers have friction grooves on their outer walls to increase shelling efficiency. The feeding hopper 16 is installed on the upper wall of the large hazelnut shelling rack 2. The hopper has a volume of 10-20L and an inclination angle of 45-60 degrees to facilitate the sliding of hazelnuts.

[0030] The primary screening assembly is movably installed inside the shelling machine frame 1, below the large hazelnut shelling assembly, and is used to screen the mixture after shelling. This assembly includes a primary screening screen 5 and a primary screening drive shaft 6. The primary screening screen 5 can pass through the shells and kernels of hazelnuts of size 1 and 2, but blocks hazelnuts of size 3 and 4. The primary screening screen 5 is suspended inside the frame by hinges or springs and can vibrate. The primary screening drive shaft 6 is mounted to the side wall of the frame by bearings and is connected to the primary screening screen 5 by a connecting rod. A ball joint is used at the connection to reduce wear. The rotation of the primary screening drive shaft 6 is converted into reciprocating vibration of the primary screening screen 5 through the connecting rod, with an amplitude of 10-20mm and a frequency of 2-5Hz, ensuring effective screening.

[0031] The small-diameter hazelnut shelling assembly is located in the middle of the shelling machine frame 1 and is used to process smaller diameter hazelnuts (such as No. 3 and No. 4 hazelnuts). This assembly includes a small-diameter hazelnut shelling frame 7, two No. 3 shelling rollers 8, and two No. 4 shelling rollers 9. The small-diameter hazelnut shelling frame 7 is fixed to the upper wall of the frame. The installation method of the two No. 3 shelling rollers 8 and two No. 4 shelling rollers 9 is similar to that of the large-diameter assembly. The gap of the movable support can be adjusted by screws. The friction groove parameters of the outer wall of the shelling rollers are the same. A connecting collection hopper 15 is installed on the upper wall of the small-diameter hazelnut shelling frame 7 to receive hazelnuts falling from the primary screening screen 5. The hopper has a volume of 5-10L and is designed with an incline.

[0032] The secondary screening assembly is movably mounted inside the shelling machine frame 1, located below the small hazelnut shelling assembly, and is used for final screening. This assembly includes a secondary screening screen 10 and a secondary screening drive shaft 11. The secondary screening screen 10 can pass through the shells of hazelnuts of sizes three and four, but retains the kernels. The secondary screening drive shaft 11 is mounted via bearings and has a structure similar to the primary screening assembly. A connecting rod drives the secondary screening screen 10 to vibrate, with an amplitude of 5-15 mm and a frequency of 3-6 Hz.

[0033] The power assembly is located on the upper wall of the shelling machine frame 1, and includes a power motor 12, two drive flywheels 13, and several drive gears 14. The power motor 12 is a three-phase asynchronous motor with a power of 2-5kW and a speed of 1400-2800rpm, adjustable via a frequency converter. The motor is bolted to the frame and is equipped with a protective cover. The two drive flywheels 13 are respectively installed at the outer ends of the second shelling roller 4 and the fourth shelling roller 9, and are connected to the drive end of the power motor 12 via belts, either V-belts or synchronous belts. The drive gears 14 are spur gears, respectively installed at the outer ends of the first shelling roller 3, the second shelling roller 4, the primary screening drive shaft 6, the third shelling roller 8, the fourth shelling roller 9, and the secondary screening drive shaft 11. The gears are connected via gear belts (such as synchronous belts) to ensure synchronous rotation. Specific transmission logic: The power motor 12 drives the transmission flywheel 13, which in turn drives the second shelling roller 4 and the fourth shelling roller 9 to rotate; the gear of the second shelling roller 4 drives the gears of the two first shelling rollers 3 through the belt, so that they rotate relative to each other (i.e., one clockwise and one counterclockwise), while driving the gear of the first-stage screening power shaft 6; similarly, the gear of the fourth shelling roller 9 drives the gears of the two third shelling rollers 8 and the gear of the second-stage screening power shaft 11.

[0034] The core of the electrical control system is the control of motor 12, using a programmable logic controller (PLC) as the main control unit, such as a Siemens S7-1200, in conjunction with relays, contactors, and sensors to achieve logic control. The operator connects an external three-phase 380V AC power supply to the power junction box on the shelling machine frame 1. The power cord is 4mm² copper wire and equipped with an overcurrent protection circuit breaker (rated current 20A). The power supply is properly grounded to ensure safety. Motor 12 is controlled by a frequency converter, which allows adjustment of the motor speed (0-2800rpm) to accommodate different hazelnut processing volumes. The control logic is as follows: 1. Startup Procedure: The user sends a signal to the PLC via the start button on the control panel. The PLC first checks safety conditions, such as whether the cover closure sensor has been triggered and whether the motor temperature sensor is functioning properly. If the conditions are met, the PLC outputs a signal to start the frequency converter, which soft-starts the motor to avoid current surges. After startup, the motor runs at the preset speed.

[0035] 2. Operating Logic: During motor operation, the PLC monitors the load current. If the current exceeds the set value, it indicates a potential blockage. The PLC automatically reduces the motor speed or stops the motor and triggers an alarm light. Simultaneously, the vibration sensor monitors the screen vibration frequency, and the PLC adjusts the motor speed based on the feedback to maintain optimal screening performance.

[0036] 3. Stop Procedure: The user stops the motor via the stop button or an automatic timer. The PLC first decelerates the motor and then cuts off the power. The emergency stop button directly cuts off the power to ensure safety.

[0037] 4. Adjustment logic: The motor speed is adjustable. When processing large hazelnuts, the speed is lower (1000-1500rpm) to avoid damage; when processing small hazelnuts, the speed is higher (2000-2500rpm) to improve efficiency.

[0038] 5. Workflow Control: The entire shelling process is automated. PLC sequential control: After startup, the motor drives all rollers and screens; the feed sensor detects hazelnuts entering, and the PLC ensures synchronized operation of the components. If the primary screen 5 becomes clogged, the pressure sensor sends a signal, the PLC pauses the motor and issues an alarm.

[0039] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-stage hazelnut shelling machine, comprising: The shelling machine frame (1) is characterized in that it further includes: Large hazelnut shelling assembly, wherein the large hazelnut shelling assembly is disposed on the upper wall of the shelling machine frame (1); A primary screening component is movably disposed inside the shelling machine frame (1) and is located below the large hazelnut shelling component; Small hazelnut shelling assembly, the small hazelnut shelling assembly is located in the middle of the shelling machine frame (1); A secondary screening component is movably disposed inside the shelling machine frame (1) and is located below the small hazelnut shelling component; A power assembly is disposed on the upper wall of the shelling machine frame (1); The large hazelnut shelling assembly includes: Large hazelnut shelling rack (2), which is fixedly installed on the upper wall of the shelling machine frame (1); Two No. 1 shelling rollers (3), one of which is fixedly installed inside the large hazelnut shelling frame (2) by a support base, and the other of which is movably installed inside the large hazelnut shelling frame (2) by a support base, and the relative position of the No. 1 shelling roller (3) inside the large hazelnut shelling frame (2) can be adjusted by screws; Two No. 2 shelling rollers (4), one of which is fixedly mounted inside the large hazelnut shelling frame (2) by a support base, and the other of which is movably mounted inside the large hazelnut shelling frame (2) by a support base. The relative positions of the two No. 2 shelling rollers (4) inside the large hazelnut shelling frame (2) can be adjusted by screws. The two No. 2 shelling rollers (4) are located below the No. 1 shelling roller (3).

2. The multi-stage hazelnut shelling machine according to claim 1, characterized in that, The primary screening component includes: A primary screening screen (5) is movably installed inside the shelling machine frame (1); The primary screening power shaft (6) is movably mounted on the side wall of the shelling machine frame (1) via bearings, and the primary screening power shaft (6) is movably connected to the primary screening screen (5) via connecting rods.

3. The multi-stage hazelnut shelling machine according to claim 1, characterized in that, The small hazelnut shelling assembly includes: Small hazelnut shelling rack (7), which is fixedly installed on the upper wall of the shelling machine frame (1); Two No. 3 shelling rollers (8), one of which is fixedly mounted inside the small hazelnut shelling frame (7) by a support base, and the other of which is movably mounted inside the small hazelnut shelling frame (7) by a support base, and the relative position of the No. 3 shelling roller (8) inside the small hazelnut shelling frame (7) can be adjusted by screws; Two No. 4 shelling rollers (9) are provided. One No. 4 shelling roller (9) is fixedly installed inside the small hazelnut shelling frame (7) by a support base. The other No. 4 shelling roller (9) is movably installed inside the small hazelnut shelling frame (7) by a support base. The relative positions of the No. 4 shelling rollers (9) inside the small hazelnut shelling frame (7) can be adjusted by screws. The two No. 4 shelling rollers (9) are located below the No. 3 shelling roller (8).

4. The multi-stage hazelnut shelling machine according to claim 1, characterized in that, The secondary screening component includes: A secondary screening screen (10) is movably disposed inside the shelling machine frame (1); The secondary screening power shaft (11) is movably mounted on the side wall of the shelling machine frame (1) via bearings, and the secondary screening power shaft (11) is movably connected to the secondary screening screen (10) via connecting rods.

5. The multi-stage hazelnut shelling machine according to claim 1, characterized in that, The upper wall of the large hazelnut shelling rack (2) is provided with a feeding hopper (16).

6. The multi-stage hazelnut shelling machine according to claim 1, characterized in that, The power assembly includes: A power motor (12) is installed on the upper wall of the shelling machine frame (1); Two drive flywheels (13) are respectively set at the outer ends of the second shelling roller (4) and the fourth shelling roller (9). The two drive flywheels (13) are connected by a belt and the drive end of the power motor (12). A plurality of transmission gears (14) are respectively disposed at the outer ends of the first shelling roller (3), the second shelling roller (4), the first-stage screening power shaft (6), the third shelling roller (8), the fourth shelling roller (9), and the second-stage screening power shaft (11). The transmission gears (14) of the two first shelling rollers (3), the two second shelling rollers (4), and the first-stage screening power shaft (6) are connected by a gear belt, so that the two first shelling rollers (3) rotate relative to each other and the two second shelling rollers (4) rotate relative to each other. The transmission gears (14) of the two third shelling rollers (8), the two fourth shelling rollers (9), and the second-stage screening power shaft (11) are connected by a gear belt, so that the two third shelling rollers (8) rotate relative to each other and the two fourth shelling rollers (9) rotate relative to each other.

7. The multi-stage hazelnut shelling machine according to claim 3, characterized in that, The upper wall of the small hazelnut shelling rack (7) is provided with a connecting collection hopper (15).

8. The multi-stage hazelnut shelling machine according to claim 1, characterized in that, The outer walls of the two No. 1 shelling rollers (3) and the two No. 2 shelling rollers (4) are provided with friction grooves.

9. The multi-stage hazelnut shelling machine according to claim 3, characterized in that, The outer walls of the two No. 3 peeling rollers (8) and the two No. 4 peeling rollers (9) are provided with friction grooves.

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