A walnut peeling machine

Abstract

This solution discloses a walnut peeling machine, including: a walnut peeling device, a walnut washing device, a drum spindle, a shavings collection device, a drive device, and a safety protection device. By setting a gear-shaped cutter with straight toothed blades and a relatively blunt cutting edge in the walnut peeling device, it can provide an oblique cutting force to the walnut while reducing damage to the walnut shell, forming a notch on the surface of the walnut green skin to facilitate subsequent cutting of the green skin. The straight toothed blades reduce the movement distance of the walnut and improve the cutting efficiency. The cutting blade in the cutter shaft is also provided with an oblique segment to provide a lateral cutting force to the walnut. During rotation, the green skin of the walnut is cut off through the notch formed on the surface of the walnut green skin by the toothed blades. The lateral cutting force further reduces the possibility of the walnut shell breaking. Therefore, it can be used to peel the green skin of both thick-skinned and thin-skinned walnuts. By combining the walnut peeling device and the walnut washing device and incorporating them into the safety protection device, the green skin on the surface of the walnut is removed efficiently, cleanly, and safely, with higher efficiency and greater applicability.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, and in particular to a walnut peeling machine. Background Technology

[0002] Walnuts, belonging to the Juglandaceae family, are among the top four dried fruits and are now one of the most widely cultivated fruit trees both domestically and internationally. Walnuts are rich in nutrients; their kernels contain trace elements such as copper, magnesium, potassium, phosphorus, iron, and zinc, as well as vitamins A, C, E, beta-carotene, pantothenic acid, folic acid, and niacin. They have strong antioxidant properties, and regular consumption of walnuts can soften blood vessels, reduce the risk of cardiovascular disease, promote bone development, and improve brain function and memory.

[0003] Walnuts are covered with a green husk that needs to be removed before they can be sold. Currently, mechanical peeling methods are commonly used, generally including scraping, cutting, and pressing. While mechanical peeling can effectively remove the green husk from thick-skinned walnuts due to differences in walnut varieties, it is prone to causing cracking and incomplete peeling when using it on thin-skinned walnuts. Furthermore, the size of current walnut peeling machines is not fully compatible with common walnut varieties on the market; some smaller walnuts cannot make sufficient contact with the machine, resulting in incomplete peeling. In addition, existing walnut peeling machines have a limited capacity, resulting in low peeling efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned technology and provide a walnut peeling machine that is applicable to common types of walnuts on the market and has a higher peeling efficiency.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A walnut peeling machine includes: a walnut peeling device, a walnut washing device, a drum spindle, a peel collection device, a drive device, and a safety protection device;

[0007] The walnut peeling device includes a gear-shaped blade and a peeling roller, the peeling roller having a hollow internal structure.

[0008] The gear-shaped cutter is disposed within the cavity structure of the peeling roller, and the space between the gear-shaped cutter and the inner side of the peeling roller constitutes the cutting area;

[0009] The main shaft of the drum is horizontally arranged. The drive device, gear-type cutter, peeling drum and walnut cleaning device are coaxially arranged from left to right and are installed together on the main shaft of the drum. The drive device is located on the left side of the peeling drum and the walnut cleaning device is located on the right side of the peeling drum.

[0010] The dander collection device includes a detachable screen, a dander collection box, and a water outlet. The detachable screen is placed in the dander collection box, and the water outlet is located at the bottom of the dander collection box. The bottom of the dander collection box has a water outlet for easy water recycling.

[0011] The driving device includes several pulleys, a belt, and a driving component. The belt is tightly fitted onto the pulleys, and the driving component is installed on the right side of the pulleys to drive the walnut peeling device and the walnut washing device to rotate, thereby completing the peeling and washing work.

[0012] The safety protection device includes a frame cover, a frame body, and connecting parts. The frame cover is semi-circular, and the frame cover and the frame body are connected vertically by the connecting parts. The walnut peeling device and the walnut washing device are installed in the frame body, and the peel collection device and the drive device are located on the outside of the frame body.

[0013] When using the walnut peeling machine, the green-skinned walnuts are first poured from the machine frame cover into the walnut cutting area between the gear-shaped cutter and the inner side of the peeling roller. The drive device drives the main shaft of the roller to rotate, which in turn drives the gear-shaped cutter to rotate. With the cooperation of the peeling roller, the green-skinned walnuts are continuously tumbled and peeled in the walnut cutting area. At this time, the cutting produces chunks of green skin.

[0014] Under the rotation of the gear-shaped cutter, most of the green husk on the walnut has been removed. However, due to the numerous grooves on the surface of the walnut, some green husk remains. Therefore, the walnut is conveyed to the walnut washing device by the rotation of the gear-shaped cutter. The walnut washing device removes the remaining green husk from the surface of the walnut by rotation, and removes the resulting green husk debris. The water outlet device washes away the debris from the surface of the walnut and filters out the remaining green husk through the detachable screen, thus completing the walnut peeling process.

[0015] The entire process of peeling walnuts takes place inside a rotating drum, which causes the green walnut husks to fly everywhere. The blades in the walnut peeling machine are quite sharp, and without a safety device, it's easy to accidentally injure someone. Therefore, a safety device must completely enclose the drum, and the drum must also be at a certain height from the ground.

[0016] The walnut peeling machine adopts a horizontal structure, that is, the walnut peeling machine peels and cleans walnuts by rotating the main shaft of the drum. The main shaft of the drum is placed horizontally and is installed and connected to the drive device, gear-type cutter and walnut cleaning device from left to right. Therefore, the main shaft of the drum includes a pulley installation section, a bearing installation section, a cutter installation section, a shoulder section and a cleaning device installation section. The pulley installation section, the cutter installation section and the cleaning device installation section are respectively provided with keyways and are keyed to the gear-type cutter, pulley and walnut cleaning device.

[0017] Since the gear-shaped cutter needs to peel the whole green walnuts, it is constantly rotating and has to withstand more force from the squeezing of the walnuts. Therefore, the roller spindle needs to drive the gear-shaped cutter very stably. Thus, the diameter of the cutter mounting section, the shoulder section, and the bearing mounting section is larger than the diameter of the pulley mounting section and the cleaning device mounting section. This makes the roller spindle more robust and stable, ensuring that the roller spindle can stably drive the gear-shaped cutter to rotate and cut the green walnuts.

[0018] The main shaft of the roller needs to drive the rotation of the gear-type cutter and the cleaning brush. It needs to be driven by a drive device, which uses a belt drive to drive the main shaft. The belt pulley includes a driving pulley and a driven pulley. The belt is tightly fitted on the driving pulley and the driven pulley. The driving pulley is located below the driven pulley. The right side of the driving pulley is connected to a drive component. The drive component drives the driving pulley to rotate, dragging the belt to move. The driven pulley starts to rotate. The belt drive structure is very simple and has good stability, which can drive the main shaft of the roller to rotate well.

[0019] The frame cover also includes a feed inlet, which is located on the left side of the frame cover. Green walnuts are poured in through the feed inlet for easy use.

[0020] After the walnut peeling and washing devices have finished washing the walnuts, the peeled walnuts need to be collected. Since the green husk of walnuts has medicinal and edible value, the pieces of green husk cut off by the gear-shaped blades during the peeling process need to be collected. This also ensures that only the walnuts to be cut remain in the cutting area, without reducing the contact area between the peeling device and the walnuts. The frame also includes a discharge port and a buffer device. Because the peeled walnuts are conveyed from the high-speed rotating walnut washing device, the discharge port is designed as a semi-circular ramp. This semi-circular ramp prevents the walnuts from splashing everywhere at the discharge port and better conforms to the shape of the walnuts, preventing damage to the shells. The discharge port is located on the right side of the frame, and the walnuts with the green husk removed are poured out from the discharge port.

[0021] Since the chunks of green husk cut by the gear-shaped cutter have a certain weight, and the chunks of green husk are thrown out from the high-speed rotating walnut peeling device, in order to prevent the chunks of green husk from splashing everywhere, the buffer device is set in a slope shape and set on the frame below the peeling roller. The chunks of green husk cut by the walnut peeling device fall from the buffer device, thereby collecting the chunks of green husk.

[0022] The walnut cleaning device is located on the right side of the machine frame. When cleaning the remaining green husks in the grooves of the walnuts, green husk fragments are generated. Therefore, the husk collection device is placed on the machine frame to the right of the buffer device to collect the green husk fragments brushed out by the walnut cleaning device.

[0023] The drive device is connected to the main shaft of the drum and drives the main shaft of the drum to rotate. Since the discharge port is set on the right side of the frame, the pulley is installed on the left side of the outside of the frame. The drive component is set below the buffer device.

[0024] Since the gear-shaped cutter not only needs to cut the green-skinned walnuts, but also needs to convey the walnuts to the walnut washing device for secondary peeling after cutting, the gear-shaped cutter is set as a cylindrical structure, including several toothed cutters and a shaft cylinder. The toothed cutters are linear structures, perpendicular to the surface of the shaft cylinder, and are distributed on the shaft cylinder at a certain angle along the circumference with respect to the generatrix of the shaft cylinder. The toothed cutters have an inclination angle α with respect to the generatrix of the shaft cylinder, and the angle of inclination α is 3°≤α≤15°.

[0025] By setting the toothed blade to an inclined straight-line structure, the toothed blade guides and supports the walnut, allowing the walnut to move along the toothed blade from the left to the right side of the gear-shaped blade as it rotates. Moreover, the straight-line structure has the shortest distance, allowing the walnut to pass through the walnut peeling device quickly.

[0026] Since the rotation of the gear-shaped cutter needs to be driven by the rotation of the drum spindle, the gear-shaped cutter needs to be installed on the drum spindle. Therefore, the shaft cylinder is set as a hollow cylindrical structure, including a hollow column and a solid column. The gear-shaped cutter is connected to the drum spindle through the hollow column part, thereby realizing the functions of rotating to peel and conveying the walnuts to the walnut washing device.

[0027] When a green walnut first enters the walnut cutting area, its surface is intact and without any gaps. It is necessary to cut a gap in the surface of the green walnut first to facilitate subsequent cutting of the green skin. However, setting a horizontal cutting force cannot create gaps in the intact state of the green walnut. Therefore, a diagonal cutting force is required to create several gaps in the intact green walnut skin. Thus, the toothed blades are all set perpendicular to the axis of the shaft cylinder to provide a diagonal cutting force. The toothed blade includes a cutting edge and a blade body. The longitudinal section of the cutting edge is an isosceles triangle to complete the diagonal cutting of the green skin.

[0028] During the oblique cutting process, the green skin is gradually cut off, exposing the walnut shell. If the walnut is thin-skinned, the oblique cutting force is likely to damage the shell, causing the walnut to break. Therefore, a certain buffer is needed to protect the walnut shell. Thus, the part of the blade that contacts the walnut is designed as an inwardly concave arc. The longitudinal section of the blade includes a top edge, a bottom edge, a left arc edge, and a right arc edge. The top edge is shorter than the bottom edge, and the left and right arc edges are concave. The arc structure can conform to the shape of the walnut and form a certain buffer during rotation, so as not to damage the walnut shell.

[0029] To further reduce the possibility of damage to the walnut shell caused by the oblique cutting force, it is necessary to reduce the sharpness of the toothed blade. This can be achieved by increasing the tip angle of the blade. Therefore, the ratio of the tip angle θ1 of the blade to the angle θ2 formed by the extension line of the blade is set to: 1 / 2≤θ1 / θ2≤3 / 1. The blade becomes rounded and blunt, which will not cause significant damage to the walnut shell. Furthermore, walnuts with notches on their surface will not get stuck on the blade, ensuring cutting efficiency.

[0030] Because the left and right arc edges of the blade need to conform to the shape and size of the walnut, the walnut is transferred to the walnut cleaning device during the rotation and cutting process of the gear-type blade. Therefore, the ratio of the length h1 of the cutting edge to the length h2 of the blade is: 1 / 7≤h1 / h2≤1 / 3. The part of the blade can better conform to the size of the walnut and smoothly transfer the walnut along the toothed blade.

[0031] The diameter of the gear-shaped cutter determines the number of walnuts that can be processed in a single batch. Increasing the size of the gear-shaped cutter can effectively increase the number of walnuts that can be peeled in a single batch, and also increases the cutter's ability to withstand the pressure of the walnuts. However, the diameter of the gear-shaped cutter cannot be set too large. On the one hand, an excessively large diameter will significantly increase the size and weight of the walnut peeling machine. On the other hand, with more walnuts, the mutual compression between them will put greater pressure on the gear-shaped cutter, accelerating the wear of the cutter. Therefore, the ratio of the height h of the gear cutter to the radius R of the shaft cylinder is set as follows: 1 / 3 ≤ h / R ≤ 1 / 10. Reasonably increasing the size of the gear-shaped cutter can not only increase the number of walnuts that can be processed in a single batch and improve the efficiency of the walnut peeling machine, but also increase the cutter's ability to withstand the pressure of the walnuts and extend the service life of the cutter.

[0032] Because the gear-shaped cutter provides a slanted cutting force, its cutting edge is designed with a relatively blunt shape. It is primarily used to create several notches on the surface of a whole, undamaged green walnut, and to rotate and transport the walnut to the walnut washing device without damaging the walnut shell. Therefore, the peeling roller needs to cut off the green husk at the notch created by the gear-shaped cutter. Furthermore, the gear-shaped cutter is continuously rotating during the peeling process, causing the walnuts to scatter and become ineffective, resulting in walnut loss. Therefore, a hollow peeling roller is needed to work in conjunction with the gear-shaped cutter. The walnuts move within the peeling roller, allowing for better removal of the green husk. During the cutting process, a large number of chunks of green husk are generated. These chunks rotate with the walnuts and are eventually conveyed to the walnut washing device. These chunks occupy space in the cutting area and prevent the walnuts from making proper contact with the gear-shaped cutter, reducing peeling efficiency. The finished walnuts and green husks are mixed together, requiring manual sifting to remove the green husk, increasing labor costs and wasting time.

[0033] Therefore, the peeling roller includes a peeling roller support and several peeling roller shafts. The peeling roller support is vertically arranged at the left end, and the several peeling roller shafts are evenly installed on the peeling roller support at equal intervals along the circumference, forming a hollow peeling roller structure. The gear-shaped cutter can be installed inside the peeling roller, and the walnuts rotate inside. The cut pieces of green skin will fall off from the gaps between the peeling roller shafts, leaving only the walnuts inside the peeling roller, without affecting the peeling process of the walnuts.

[0034] The peeling roller shaft includes a regular shaft and a cutting shaft. The cutting shaft includes a regular shaft and cutting blades. The regular shaft does not have cutting blades to ensure that the walnuts are in the cutting area and do not have a cutting function. The inner surface of the cutting shaft has several cutting blades installed perpendicular to the roller main shaft and the regular shaft. The cutting shaft not only places the walnuts in the cutting area, but also works with the gear-shaped cutter to cut the green skin of the walnuts.

[0035] Due to the weight of the walnuts, they are more likely to come into contact with the cutter shaft when they are below the peeling roller, and the green skin is mainly cut by the cutter shaft. Therefore, the several ordinary shafts are installed on the upper edge of the peeling roller support, and the several cutter shafts are installed on the lower edge of the peeling roller support. The cutting blade is designed with a fan-shaped structure, including a horizontal side, a vertical side, and an arc side. The cutting blade is installed and connected to the inner surface of the cutter shaft through the horizontal side, the vertical side has a supporting function, and the arc side is a cutting edge with a blade.

[0036] Because the shells of thin-shelled walnuts are relatively fragile, oblique cutting forces can easily damage them, causing them to crumble quickly during the cutting process and affecting the yield. Therefore, when cutting the green husk, a lateral cutting force needs to be applied to protect the shell. Thus, the vertical side also includes a straight segment and a diagonal segment. The straight segment connects to the horizontal side, and the diagonal segment connects to the arc side. The diagonal segment slopes outward from the cutting blade, and there is an angle β between the diagonal segment and the straight segment. The diagonal segment increases the lateral length of the arc-shaped blade, providing better lateral cutting force, preventing the shells of thin-shelled walnuts from breaking, and improving the yield of the walnut peeling machine.

[0037] The arc edge is the cutting edge of the cutting blade, which contacts the green walnut and cuts the green skin horizontally. The arc edge design allows the blade to have a larger cutting surface, more even force distribution, and higher cutting efficiency.

[0038] The center angle γ of the cutting blade is 60°≤γ≤100°, which can further improve the support force and stability of the cutting blade.

[0039] The oblique line segment and the straight line segment have an angle β, which is intended to increase the transverse cutting portion of the cutting blade. However, if the angle β is too large, the blade portion between the oblique line segment and the arc segment will become very sharp, and there is also a certain angle between the oblique line segment and the straight line segment. Under the action of the rotating equipment and the pressure of the walnut, this part will be broken off quickly. If the angle β is too small, it will not have the effect of increasing the transverse cutting portion. Therefore, the angle β is set to: 0 < β ≤ 10°.

[0040] Because the walnut's skin naturally has complex textures and grooves, using hard gear-shaped knives and cutting blades can only remove most of the green husk. The green husk in the grooves cannot be removed with knives and needs to be brushed off with a relatively soft brush. Therefore, the walnut cleaning device includes several cleaning brushes, a cleaning device shaft, a cleaning drum, and a water outlet. The cleaning device shaft is provided with several fixed grooves, and the cleaning brushes are installed in the corresponding fixed grooves. The walnut cleaning device is mounted on the main shaft of the drum through the cleaning device shaft. The cleaning brushes rotate and brush away the remaining green husk on the walnut surface. At this time, the green husk fragments brushed off by the cleaning brushes are green husk debris.

[0041] Similarly, the cleaning brush also operates by rotating. To prevent walnuts from scattering everywhere and to easily handle the green husk fragments brushed off by the cleaning brush, a cleaning roller with a cavity is required on the outside of the cleaning brush. This ensures that the walnuts only rotate between the cleaning brush and the cleaning roller. Therefore, the cleaning roller includes a left roller frame, a right roller frame, and several cleaning roller shafts. The left roller frame and the right roller frame are vertically arranged, and the cleaning roller shafts are evenly arranged around the left roller frame and the right roller frame, forming the cavity of the cleaning roller. The cleaning brush is placed inside the cavity of the cleaning roller, and the cleaning roller works in conjunction with the cleaning brush to clean the walnuts.

[0042] Because the green husk has a certain stickiness, after the cleaning brush brushes out the green husk from the grooves of the walnut, the green husk fragments still adhere to the surface of the walnut. If not treated, the green husk fragments need to be washed off manually, which greatly reduces the output efficiency. Therefore, the water outlet device is installed above the cleaning drum to automatically wash away the green husk fragments brushed out by the cleaning brush.

[0043] The walnut washing device receives walnuts from the walnut peeling device, washes them, and then removes them; otherwise, the walnuts will remain in the washing device indefinitely. Since most of the green husk has already been removed from the walnuts when they arrive, only a small amount remains. This remaining husk can be largely removed by the washing brush on the left side of the washing device and the water outlet. Therefore, the fixed groove is positioned with a smaller gap on the left side near the washing device's axis compared to the right side, creating a left-dense, right-sparse structure. This allows for quick cleaning of the remaining green husk on the left side, while the washing brush on the right side acts as a guide, leading the walnuts to the right during rotation until they are removed from the washing device. The wider gap on the right side also allows for more walnuts to be accommodated, increasing the number of walnuts processed per cycle.

[0044] In the left view of the walnut cleaning device with the cleaning brushes, the shaft of the cleaning device is covered with the cleaning brushes, or the cleaning brushes overlap to ensure the cleaning effect of the walnuts.

[0045] This invention provides a walnut peeling machine. By setting a gear-shaped cutter with straight toothed blades and a relatively blunt cutting edge, it can provide an oblique cutting force to the walnut while reducing damage to the walnut shell, creating a notch on the surface of the green husk to facilitate subsequent peeling. The straight toothed blades reduce the movement distance of the walnut, improving the peeling efficiency. The cutting blade in the cutter shaft is also provided with an oblique segment to provide a lateral cutting force to the walnut. During rotation, the green husk is cut off, and the lateral cutting force further reduces the possibility of the walnut shell breaking. Therefore, it can be used to peel the green husk of both thick-skinned and thin-skinned walnuts, and has higher stability and applicability. Attached Figure Description

[0046] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this solution. To better illustrate the solution, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0047] Figure 1 This is a schematic diagram of a walnut peeling machine.

[0048] Figure 2 This is a schematic diagram of the frame cover structure of a walnut peeling machine.

[0049] Figure 3 This is a schematic diagram of the frame structure of a walnut peeling machine.

[0050] Figure 4 This is a schematic diagram of the drum spindle structure.

[0051] Figure 5 This is a schematic diagram of the structure of a gear-type cutting tool.

[0052] Figure 6 This is a schematic diagram of the longitudinal section of a gear-type cutting tool.

[0053] Figure 7 This is a structural diagram of a peeling roller frame.

[0054] Figure 8 This is a schematic diagram of the tool shaft.

[0055] Figure 9 This is a schematic diagram of the structure of the cutting tool shaft and insert.

[0056] Figure 10 This is a structural diagram of the cleaning brush and the shaft of the cleaning device.

[0057] Figure 11 This is a left view of the axis of the cleaning brush and cleaning device.

[0058] The reference numerals in the accompanying drawings include: safety protection device 100, frame cover 110, feed inlet 111, frame body 120, buffer device 121, discharge outlet 122, walnut peeling device 300, gear-type cutter 310, toothed cutter 311, cutting edge 312, blade 313, left arc edge 3131, right arc edge 3132, shaft cylinder 314, hollow column 315, solid column 316, peeling roller 320, peeling roller support 321, ordinary shaft 322, cutter shaft 323, cutting blade 324, horizontal edge 3241, vertical edge 3242, straight edge 3242, etc. Line segment 3243, oblique line segment 3244, arc edge 3245, walnut cleaning device 400, cleaning brush 410, cleaning device shaft 420, fixing groove 430, cleaning drum 440, drum main shaft 500, pulley mounting section 510, bearing mounting section 520, cutter mounting section 530, shoulder section 540, cleaning device mounting section 550, drive device 600, drive wheel 610, driven wheel 620, belt 630, drive component 640, dander collection device 700, detachable screen 710, dander collection box 720, water outlet device 730. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:

[0060] Example 1: Refer to Figure 1

[0061] This invention provides a walnut peeling machine, comprising: a walnut peeling device 300, a walnut washing device 400, a roller main shaft 500, a shavings collection device 700, a drive device 600, and a safety protection device 100, such as... Figure 1 As shown.

[0062] The walnut peeling device 300 includes a gear-shaped cutter 310 and a peeling roller 320, the peeling roller 320 having a hollow internal structure;

[0063] The gear-shaped cutter 310 is disposed in the cavity structure of the peeling roller 320, and the space between the gear-shaped cutter 310 and the inner side of the peeling roller 320 constitutes the cutting area.

[0064] The walnut cleaning device 400 includes a cleaning brush 410 and a cleaning roller 440, used to clean the green skin on the surface of the walnuts.

[0065] The main shaft of the drum 500 is horizontally arranged. The drive device 600, gear-type cutter 310, peeling drum 320 and walnut cleaning device 400 are coaxially arranged from left to right and are installed on the main shaft of the drum 500. The drive device 600 is located on the left side of the peeling drum 320 and the walnut cleaning device 400 is located on the right side of the peeling drum 320.

[0066] The dander collection device 700 includes a detachable screen 710, a dander collection box 720, and a water outlet 730. The detachable screen 710 is placed in the dander collection box 720, and the water outlet 730 is located at the bottom of the dander collection box 720. The bottom of the dander collection box 720 has a water outlet for easy recycling of clean water.

[0067] The drive device 600 includes a drive wheel 610, a driven wheel 620, a belt 630, and a drive component 640. The belt 630 is tightly fitted onto the pulley, and the drive component 640 is installed on the right side of the pulley, driving the walnut peeling device 300 and the walnut washing device 400 to rotate, thereby completing the peeling and washing work.

[0068] The safety protection device 100 includes a frame cover 110, a frame body 120, and connecting parts. The frame cover 110 is semi-circular. The frame cover 110 and the frame body 120 are connected vertically by the connecting parts. The walnut peeling device 300 and the walnut washing device 400 are installed in the frame body. The peel and shavings collection device 700 and the drive device 600 are located on the outside of the frame body.

[0069] When using a walnut peeling machine to peel green walnuts, the drive device 600 drives the main shaft 500 to start rotating. The gear-type cutter 310 installed on the main shaft 500 also rotates with the main shaft 500, pouring the green walnuts from the machine frame cover 110 into the cutting area formed between the gear-type cutter 310 and the peeling roller 320. The gear-type cutter 310 and the peeling roller 320 cooperate to cut the green walnuts, producing a large number of blocky green skins.

[0070] Because the surface of walnuts is covered with grooves and textures, cutting with hard-material knives can only remove most of the green husk on the surface of the walnut, but cannot completely remove the green husk inside the grooves, which greatly affects the quality of the walnut. Therefore, after the walnuts are cut by the gear-shaped knife 310 and the peeling roller 320, they enter the walnut washing device 400. The washing brush 410 is made of a soft and elastic material, which can clean the remaining green husk inside the grooves of the walnut. At this time, a small amount of green husk debris is generated. The debris collection device 700 filters and collects the green husk debris through the detachable screen 710.

[0071] Because the green husk has a certain stickiness, after brushing off the green husk with the cleaning brush 410, some green husk fragments will still stick to the surface of the walnut. The water outlet device 730 is used to rinse the surface of the walnut clean, thereby obtaining the peeled walnut product.

[0072] The walnut peeling machine uses a rotating gear-type blade 310 and a cleaning brush 410 in conjunction with a roller to peel the walnuts. During the rotation, to prevent the blades from accidentally injuring farmers and to prevent the cutting of green husks, green husk fragments, and water from splashing everywhere, a safety protection device 100 is used. The walnut peeling device 300 and the walnut cleaning device 400 are placed inside the machine frame 120. All peeling operations are carried out inside the machine frame 120, which can ensure the safety of farmers and prevent the peeling work from polluting the surrounding environment.

[0073] Example 2: Refer to Figure 2

[0074] Compared with Embodiment 1, the difference is that the frame cover 110 also includes a feed inlet 111. When using a walnut peeling machine to peel walnuts, the green walnuts need to be poured into the cutting area from the frame cover 110. Therefore, the feed inlet 111 needs to be set at the top of the frame cover, and the walnuts are poured in from the feed inlet 111.

[0075] Since green walnuts need to be placed in the cutting area for cutting, the feed inlet 111 is located on the left side of the frame cover 110, that is, above the walnut peeling device 300. Walnuts can be poured into the cutting area directly from the feed inlet 111 to begin peeling.

[0076] Example 3: Reference Figure 3

[0077] Compared with Embodiment 2, the difference is that the frame body 120 also includes a buffer device 121 and a discharge port 122. During the operation of the walnut peeling machine, a large number of blocky green peels are generated. Green peels have medicinal and edible value, so they need to be collected. However, the blocky green peels fall from the high-speed rotating walnut peeling device 300 and have a certain weight. Direct collection may cause the blocky green peels to splatter everywhere, affecting the collection progress and increasing labor costs. Therefore, a buffer device 121 is set on the frame body 120 below the walnut peeling device 300. The buffer device 121 is sloping, which can prevent the green peels from splattering everywhere and can collect the green peels more quickly.

[0078] After the walnuts are peeled, a discharge port 122 needs to be set up to collect the finished walnuts. The finished walnuts are discharged from the high-speed rotating cleaning brush. Therefore, the discharge port 122 is set as a semi-circular slope, which can fit the shape of the walnuts well and protect the walnut shells. The semi-circular design also acts as a barrier to prevent the finished walnuts from splashing and improve the output quality of the walnut peeling machine.

[0079] Example 4: Reference Figure 4

[0080] Compared with Embodiment 3, the difference lies in that the walnut peeling machine adopts a horizontal structure, that is, the walnut peeling machine peels and cleans walnuts by rotating the main shaft 500. The main shaft 500 is placed horizontally and is installed and connected to the drive device 600, the gear-type cutter 310 and the walnut cleaning device 400 from left to right. Therefore, the main shaft includes a pulley mounting section 510, a bearing mounting section 520, a cutter mounting section 530, a shoulder section 540 and a cleaning device mounting section 550. The pulley mounting section 510, the cutter mounting section 530 and the cleaning device mounting section 550 are respectively provided with keyways and are keyed to the gear-type cutter 310, the pulley and the walnut cleaning device 400.

[0081] Since the gear-shaped cutter 31 needs to peel the whole green walnuts, it is constantly rotating and has to withstand more force from the squeezing of the walnuts. Therefore, the roller spindle 500 needs to drive the gear-shaped cutter very stably. Thus, the diameters of the cutter mounting section 530, the shoulder section 540, and the bearing mounting section 520 are larger than the diameters of the pulley mounting section 510 and the cleaning device mounting section. This makes the roller spindle 500 more robust and stable, ensuring that the roller spindle 500 can stably drive the gear-shaped cutter 310 to rotate and cut the green walnuts.

[0082] Example 5: Refer to Figure 5 and Figure 6

[0083] Compared with the above embodiments, the difference is that, as Figure 5 As shown, the gear-type cutter 310 is configured as a cylindrical structure, including a plurality of toothed cutters 311 and a shaft cylinder 314;

[0084] The toothed blade 311 has a straight structure and is used to allow the walnuts to pass quickly through the walnut peeling device 300;

[0085] The toothed cutter 311 is perpendicular to the surface of the shaft cylinder 314 and is distributed obliquely on the shaft cylinder 314 at a certain angle along the circumference. The toothed cutter 311 and the generatrix of the shaft cylinder 314 have an inclination angle α, and the angle of the inclination angle α is α = 10°.

[0086] Since the gear-shaped cutter 310 not only needs to cut the green walnuts, but also needs to convey the walnuts to the walnut washing device 400 for secondary peeling after cutting, the gear-shaped cutter 310 is set as a cylindrical structure. By setting the toothed blade 311 as an inclined straight line structure, the toothed blade 311 has the function of guiding and supporting the walnuts, allowing the walnuts to move from the left side to the right side of the gear-shaped cutter 310 along the toothed blade 311 under the rotation of the gear-shaped cutter 310. Moreover, the straight line structure has the shortest distance, and the walnuts can quickly pass through the walnut peeling device 300.

[0087] Since the rotation of the gear-type cutter 310 needs to be driven by the rotation of the drum spindle 500, the gear-type cutter 310 needs to be installed on the drum spindle 500. Therefore, the shaft cylinder 314 is set as a hollow cylindrical structure, including a hollow column 315 and a solid column 316. The gear-type cutter 310 is connected to the drum spindle 500 through the hollow column 315 to realize the function of rotating to peel the walnuts and convey the walnuts to the walnut washing device 400.

[0088] Since the surface of a green walnut is intact and without any gaps when it first enters the walnut cutting area, it is difficult to start cutting directly. It is necessary to first cut notches on the surface of the green walnut to facilitate subsequent cutting of the green skin from these notches. However, a lateral cutting force is insufficient to create notches on the intact walnut; therefore, an oblique cutting force is required to create several notches on the intact green walnut skin. Thus, the toothed cutters 311 are all perpendicular to the axis of the shaft cylinder 314 to provide an oblique cutting force. Figure 6 As shown, the toothed blade 311 also includes a cutting edge 312 and a blade body 313. The longitudinal section of the cutting edge 312 is an isosceles triangle, which completes the oblique cutting of the green skin.

[0089] During the oblique cutting process of the blade 312, the green skin is gradually cut off, and the walnut shell will be exposed. If the walnut is thin-skinned, the oblique cutting force is very likely to damage the shell and cause the walnut to break. Therefore, a certain buffer is needed to protect the walnut shell. Therefore, the part of the blade 313 that contacts the walnut is set to be an inwardly concave arc. The blade 313 also includes a left arc edge 3131 and a right arc edge 3132. The left arc edge 3131 and the right arc edge 3132 are concave. The arc structure can fit the shape of the walnut and form a certain buffer during rotation, so as not to damage the walnut shell.

[0090] To further reduce the possibility of damage to the walnut shell caused by the oblique cutting force, it is necessary to reduce the sharpness of the toothed blade 311. This can be achieved by increasing the tip angle of the cutting edge 312. Therefore, the ratio of the tip angle θ1 of the cutting edge 312 to the angle θ2 formed by the extension line of the blade 313 is set to: θ1 / θ2 = 1 / 2. The cutting edge 312 becomes rounded and blunt, which will not cause significant damage to the walnut shell. Furthermore, walnuts with notches on their surface will not get stuck on the cutting edge 312, ensuring cutting efficiency.

[0091] Since the left arc edge 3131 and right arc edge 3132 of the blade 313 need to conform to the shape and size of the walnut, the walnut is transferred to the walnut washing device 400 during the rotation and cutting process of the gear-type cutter 310. Therefore, the ratio of the length h1 of the cutting edge 312 to the length h2 of the blade 313 is: h1 / h2 = 1 / 3. The part of the blade 313 can better conform to the size of the walnut and smoothly transfer the walnut along the toothed blade 311.

[0092] The diameter of the gear-shaped cutter 310 determines the number of walnuts that can be processed in a single batch. Increasing the diameter of the gear-shaped cutter 310 can effectively increase the number of walnuts that can be peeled in a single batch, and also increases the ability of the gear-shaped cutter 310 to withstand the pressure of the walnuts. However, the diameter of the gear-shaped cutter 310 cannot be set too large. On the one hand, an excessively large diameter will significantly increase the size and weight of the walnut peeling machine. On the other hand, with more walnuts, the mutual compression between them will put greater pressure on the gear-shaped cutter 310, accelerating the wear of the cutter. Therefore, the ratio of the height h of the toothed cutter 311 to the radius R of the shaft cylinder 314 is set as: h / R = 1 / 5. Reasonably increasing the size of the gear-shaped cutter 310 can not only increase the number of walnuts processed in a single batch and improve the efficiency of the walnut peeling machine, but also increase the ability of the gear-shaped cutter 310 to withstand the pressure of the walnuts and extend the service life of the cutter.

[0093] Example 6: Refer to Figure 7

[0094] The difference compared to the above embodiments is that,

[0095] Because the gear-shaped cutter 310 provides a slanted cutting force, and its cutting edge 311 is set to a relatively blunt shape, it is mainly used to create several notches on the surface of a whole, undamaged green walnut, and to rotate and transport the walnut to the walnut washing device 400 without damaging the walnut shell. Therefore, the peeling roller 320 is needed to cut off the green skin at the notch formed by the gear-shaped cutter 310. Furthermore, the gear-shaped cutter 310 is in a continuous rotating state during the peeling process, and the walnuts will fly everywhere due to the continuous rotation, failing to achieve the desired peeling effect and causing walnut loss. Therefore, a hollow peeling roller 320 is needed to cooperate with the gear-shaped cutter 310. The walnuts move within the peeling roller 320, which can better remove the green skin. During the cutting process, a large number of lumps of green husk are generated. These lumps of green husk rotate along with the walnut and are eventually conveyed to the walnut washing device 400. The lumps of green husk will occupy the space of the cutting area and prevent the walnut from making better contact with the gear-shaped cutter 310, reducing the peeling efficiency. The finished walnut and green husk will be mixed together, requiring manual sifting to remove the green husk, which not only increases labor costs but also wastes time.

[0096] Therefore, the peeling roller 320 includes a peeling roller support 321 and several peeling roller shafts. The peeling roller support 321 is vertically arranged at the left end, and the several peeling roller shafts are evenly installed on the peeling roller support 321 at equal intervals along the circumference, forming a hollow peeling roller 320 structure. The gear-shaped cutter 310 can be installed inside the peeling roller 320, and the walnuts rotate inside. The cut pieces of green skin will fall off from the gaps between the peeling roller shafts, leaving only the walnuts inside the peeling roller 320, without affecting the peeling process of the walnuts.

[0097] The peeling roller shaft includes a regular shaft 322 and a cutting blade shaft 323. The cutting blade shaft 323 includes a regular shaft 322 and a cutting blade 324. The regular shaft 322 does not have a cutting blade 324 to ensure that the walnut is in the cutting area and does not have a cutting function. On one side of the inner surface of the cutting blade shaft 323, a number of cutting blades are installed perpendicular to the roller main shaft 500 and the regular shaft 322. The cutting blade shaft 323 not only places the walnut in the cutting area, but also works with the gear-type cutting blade 310 to cut the green skin of the walnut.

[0098] Due to the weight of the walnut, it is easier for the walnut to come into contact with the cutter shaft when it is below the peeling roller, and the green skin is mainly cut by the cutter shaft. The several ordinary shafts 322 are all installed on the upper edge of the peeling roller support 321, and the several cutter shafts are all installed on the lower edge of the peeling roller support 321.

[0099] Example 7: Refer to Figure 8 and9

[0100] Compared with Example 6, the difference is that, as Figure 8 As shown, a plurality of cutting blades 324 are mounted on one side of the inner surface of the cutter shaft 323 perpendicular to the roller main shaft 500 and the ordinary shaft 322. The cutting blades 324 are configured as a fan-shaped structure, including a horizontal edge 3241, a vertical edge 3242 and an arc edge 3244. The cutting blades 324 are mounted and connected to the inner surface of the cutter shaft 323 through the horizontal edge 3241. The vertical edge 3242 has a supporting function, and the arc edge 3244 is a cutting edge with a blade.

[0101] Because the shells of thin-shelled walnuts are relatively fragile, oblique cutting forces can easily damage them, causing them to crumble quickly during the cutting process and affecting the yield. Therefore, when cutting the green husks, a transverse cutting force needs to be applied to protect the shells. Figure 10 As shown, the vertical side 3242 also includes the straight line segment 3243 and the oblique line segment 3244. The straight line segment 3243 is connected to the horizontal side 3241, and the oblique line segment 3244 is connected to the arc side 3245. The oblique line segment 3244 is inclined to the outside of the cutting blade 324. The oblique line segment 3244 and the straight line segment 3243 have an angle β. The oblique line segment 3244 increases the transverse length of the blade of the arc side 3245, which can better provide transverse cutting force, avoid the shell of thin-shelled walnuts from breaking, and improve the output rate of the walnut peeling machine.

[0102] The arc edge 3245 is the cutting edge of the cutting blade 324, which contacts the green walnut and cuts the green skin horizontally. The arc edge design allows the blade to have a larger cutting surface, more even force distribution, and higher cutting efficiency.

[0103] The center angle γ of the cutting blade 324 is γ = 90°, which can further improve the support force and stability of the cutting blade 324.

[0104] The oblique line segment 3244 and the straight line segment 3243 have an oblique angle β, which is intended to increase the transverse cutting portion of the cutting blade 324. However, if the angle β is too large, the blade portion between the oblique line segment 3244 and the arc segment 3245 will become very sharp, and there is also a certain angle between the oblique line segment 3244 and the straight line segment 3243. Under the action of the equipment rotation and the pressure of the walnut, this part will be broken off quickly. If the angle β is too small, it will not have the effect of increasing the transverse cutting portion. Therefore, the angle β is set to: β = 10°.

[0105] Example 8: Refer to Figure 10 and Figure 11

[0106] Compared with the above embodiments, the difference is that the walnut cleaning device 400 includes several cleaning brushes 410, a cleaning device shaft 420, a fixing groove 430, and a cleaning roller 440. Several fixing grooves 430 are provided on the cleaning device shaft 420, and the several cleaning brushes 410 are correspondingly installed in the fixing grooves 430. The walnut cleaning device 400 is installed on the roller main shaft 500 through the cleaning device shaft 420. Since the walnut skin has naturally formed complex textures and grooves, using a gear-type knife 310 and a cutting blade 324 made of hard material can only remove most of the green walnut skin. However, the green skin in the grooves of the walnut skin cannot be removed by the knife. It is necessary to use a relatively soft brush to brush away the green skin in the grooves. Therefore, the cleaning brushes 410 rotate to brush away the remaining green skin on the surface of the walnut. At this time, what is brushed out by the cleaning brushes 410 is green skin debris.

[0107] The cleaning brush 410 also operates by rotating. To prevent walnuts from scattering everywhere and to facilitate the removal of green husk fragments by the cleaning brush 410, a cleaning roller 440 with a cavity is provided on the outside of the cleaning brush 410. This ensures that the walnuts only rotate between the cleaning brush 410 and the cleaning roller 440. The cleaning brush 410 is located inside the cavity of the cleaning roller 440, and the cleaning roller 440 works in conjunction with the cleaning brush 410 to clean the walnuts.

[0108] like Figure 10 As shown, the fixed groove 430 has a smaller spacing on the left side near the shaft 420 of the cleaning device compared to the right side, thus it is configured as a left-dense, right-sparse structure. Since the walnut cleaning device 400 receives walnuts from the walnut peeling device 300, it also needs to be transferred out after cleaning; otherwise, the walnuts will remain in the walnut cleaning device 400. Furthermore, when the walnuts are transferred from the peeling device 300, most of the green husk on the walnut surface has already been cut off, leaving only a small amount of residual green husk. This can be largely removed by brushing with the cleaning brush 410 on the left side of the walnut cleaning device 400. Therefore, the residual green husk can be quickly brushed off on the left side, while the cleaning brush 410 on the right side serves a cleaning and guiding function, brushing the walnut surface while guiding the walnut to the right during rotation until it leaves the walnut cleaning device 400. The wider spacing on the right side can accommodate more walnuts, increasing the number of walnuts processed per cycle.

[0109] like Figure 11 As shown in the left view of the walnut cleaning device with the cleaning brushes 410, the cleaning brushes 410 overlap to ensure the cleaning effect of the walnuts.

Claims

1. A walnut peeling machine, comprising: The walnut peeling device, walnut washing device, drum spindle, peel collection device, drive device, and safety protection device are characterized by: The walnut peeling device includes a gear-shaped blade and a peeling roller, the peeling roller having a hollow internal structure. The gear-shaped cutter is disposed within the cavity structure of the peeling roller, and the space between the gear-shaped cutter and the inner side of the peeling roller constitutes the cutting area; The walnut cleaning device includes several cleaning brushes and a cleaning roller. The cleaning roller has a hollow structure inside, and the several cleaning brushes are arranged inside the hollow structure of the cleaning roller to clean the green skin on the surface of the walnut. The main shaft of the drum is horizontally arranged. The drive device, gear-type cutter, peeling drum and walnut cleaning device are coaxially arranged from left to right and are installed together on the main shaft of the drum. The drive device is located on the left side of the peeling drum and the walnut cleaning device is located on the right side of the peeling drum. The dander collection device includes a detachable screen, a dander collection box, and a water outlet. The detachable screen is placed in the dander collection box, and the water outlet is located at the bottom of the dander collection box. The bottom of the dander collection box has a water outlet for easy water recycling. The driving device includes several pulleys, a belt, and a driving component. The belt is tightly fitted onto the pulleys, and the driving component is installed on the right side of the pulleys to drive the walnut peeling device and the walnut washing device to rotate, thereby completing the peeling and washing work. The safety protection device includes a frame cover, a frame body, and connecting parts. The frame cover is semi-circular. The frame cover and the frame body are connected vertically by the connecting parts. The walnut peeling device and the walnut washing device are installed in the frame body. The shavings collection device and the drive device are located on the outside of the frame body. The peeling roller includes a peeling roller support and a plurality of peeling roller shafts. The peeling roller support is vertically arranged at the left end, and the plurality of peeling roller shafts are evenly installed on the peeling roller support at equal intervals along the circumference. The peeling roller shaft includes a standard shaft and a cutter shaft, and the cutter shaft includes a standard shaft and a cutting blade; Several cutting blades are mounted on one side of the inner surface of the tool shaft, perpendicular to the main shaft of the drum and the ordinary shaft; The plurality of ordinary shafts are all installed on the upper edge of the peeling roller bracket, and the plurality of tool shafts are all installed on the lower edge of the peeling roller bracket; The cutting blade is configured with a fan-shaped structure, including a horizontal edge, a vertical edge, and an arc edge; The cutting blade is mounted and connected to the inner surface of the tool shaft via the transverse edge; The vertical side also includes a straight segment and a diagonal segment. The straight segment connects to the horizontal side, and the diagonal segment connects to the arc side. The diagonal segment is inclined to the outside of the cutting blade and is used to provide lateral cutting force to prevent the walnut shell from breaking. The arc edge is the cutting edge of the cutting blade, which contacts the green walnut and cuts the green skin horizontally; The gear-type cutter is configured as a cylindrical structure, including several toothed cutters and a core cylinder; The toothed cutter is perpendicular to the surface of the shaft cylinder and is distributed obliquely on the shaft cylinder at a certain angle along the circumference with respect to the generatrix of the shaft cylinder. The toothed cutter and the generatrix of the shaft cylinder have an inclination angle α. The toothed knife includes a cutting edge and a blade. The longitudinal section of the cutting edge is an isosceles triangle, which is used to apply an inclined force to the green walnut skin and form several notches on the intact green walnut skin. The longitudinal section of the blade includes an upper side, a lower side, a left arc side, and a right arc side. The upper side is shorter than the lower side, and the left and right arc sides are concave inward to form a buffer and prevent damage to the walnut shell. The angle of inclination α is 3°≤α≤15°.

2. The walnut peeling machine according to claim 1, characterized in that: The drum spindle includes a pulley mounting section, a bearing mounting section, a tool mounting section, a shoulder section, and a cleaning device mounting section. The section for installing the pulley, the section for installing the cutter, and the section for installing the cleaning device are each provided with keyways, which are keyed to the gear-type cutter, the pulley, and the walnut cleaning device.

3. The walnut peeling machine according to claim 2, characterized in that: The diameters of the tool mounting section, shoulder section, and bearing mounting section are larger than the diameters of the pulley mounting section and cleaning device mounting section, ensuring that the gear-shaped tool and its left and right components rotate stably to cut the green skin.

4. A walnut peeling machine according to claim 1, characterized in that: The pulley includes a driving pulley and a driven pulley. The driven pulley is installed at the left end of the peeling roller. The belt is tightly fitted onto the driving pulley and the driven pulley. The driving pulley is located below the driven pulley. The drive wheel is connected to a drive unit on its right side. The drive unit drives the drive wheel to rotate, drags the belt to move, and drives the driven wheel to rotate.

5. A walnut peeling machine according to claim 1, characterized in that: The frame cover also includes a feed inlet, which is located on the left side of the frame cover, through which green walnuts are poured in. The frame also includes a discharge port and a buffer device. The discharge port is a semi-circular slope and is located on the right side of the frame. The walnuts with the green skin removed are poured out from the discharge port. The buffer device is a slope and is located on the frame below the peeling roller. The chunks of green skin cut by the walnut peeling device fall from the buffer device. The shavings collection device is placed on the frame on the right side of the buffer device to collect the green shavings brushed out by the walnut cleaning device. The pulley is installed on the outside left side of the frame body, and the drive component is located below the buffer device.

6. A walnut peeling machine according to claim 1, characterized in that: The toothed blade has a straight structure, which is used to allow the walnuts to pass through the walnut peeling device quickly; The shaft cylinder is configured as a hollow cylindrical structure, including a hollow column and a solid column. The gear-shaped cutter is connected to the main shaft of the drum through the hollow column part to realize the function of rotating to peel the walnuts and convey the walnuts to the walnut washing device.

7. A walnut peeling machine according to claim 1, characterized in that: The walnut cleaning device also includes a cleaning device shaft and a water outlet device; The cleaning device shaft is provided with several fixed grooves, and several cleaning brushes are installed in the fixed grooves accordingly. The walnut cleaning device is installed on the main shaft of the drum through the cleaning device shaft. The cleaning brushes rotate to clean the residual green skin on the surface of the walnut. The cleaning roller includes a left roller frame, a right roller frame, and several cleaning roller shafts. The left roller frame and the right roller frame are vertically arranged. The cleaning roller shafts are evenly arranged around the left roller frame and the right roller frame. The cleaning brush is arranged in the cavity of the cleaning roller and is used to clean the walnuts in conjunction with the cleaning brush.

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