Walnut peeling and cleaning machine

Abstract

The invention belongs to the technical field of agricultural machinery, and discloses a walnut peeling and cleaning machine which comprises a rack, a feeding mechanism is arranged at the top of the rack, a primary peeling mechanism is connected to the lower portion of the feeding mechanism, a secondary peeling mechanism is connected to the tail end of the primary peeling mechanism, and a cleaning mechanism is connected to the lower portion of the secondary peeling mechanism; a collecting assembly is arranged on the lower portion of the cleaning mechanism. A double-stage peeling technology is adopted, primary peeling is achieved through differential driving of the upper conveying belt and the lower conveying belt, secondary peeling is completed in cooperation with rotating operation of the steel wire rolling brush, and the peeling rate and peeling efficiency of green-peel walnuts are greatly improved; the feeding mechanism adopts the matched design of a material hopper, a discharging rotary disc and a discharging hopper, the mechanical transmission efficiency is high, stable intermittent transposition can be achieved, stable operation of equipment is assisted, and then the production efficiency is improved; green peel residues and walnuts are rapidly separated through an arc-shaped sieve plate, a gap preset between a third conveying belt and a fourth conveying belt and a net-shaped conveying belt, peeling and screening integrated operation is achieved, and the practicability of the whole machine design is improved.

Description

A walnut peeling and washing machine Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and relates to walnut peeling equipment, specifically a walnut peeling and washing machine. Background Technology

[0002] Walnuts are one of the world's four major dried fruits. my country has long been the world's largest producer of walnuts, covering several advantageous production areas in North China, Northwest China, and Southwest China. The planting area and total output have been steadily increasing year by year. The supporting walnut primary processing industry has also continued to expand, forming a complete industrial chain integrating planting, harvesting, primary processing, and distribution. In the key stages of walnut commercialization, the removal of the green husk and cleaning of the fruit surface are core processes that determine the product's appearance, food safety, and market value. However, the current market still widely uses traditional manual peeling or simple single-machine operation modes. These methods not only have problems such as high labor intensity, low processing efficiency, and limited processing capacity per person per day, making it difficult to meet the processing needs of centralized harvesting under large-scale planting, but also have obvious shortcomings in peeling and cleaning effects: manual peeling is prone to problems such as green peel residue and scratches on the shell, while simple machinery often uses rigid scraping, high-pressure washing, large particles are easily damaged by excessive friction, and small particles may not be peeled cleanly, which are extensive operation methods. They not only cannot completely remove green peel debris and pigment stains between the shell lines, but also easily cause damage to the shell, which in turn leads to oxidation and deterioration of the kernel.

[0003] As consumers' demands for the quality of walnut products continue to rise, traditional manual or simple mechanical operation methods are far from meeting the stringent requirements for efficient peeling, clean appearance, and low loss rate in the commercialization process. Developing efficient, low-loss, and environmentally friendly walnut peeling and cleaning equipment suitable for large-scale processing has become an urgent need to promote the high-quality development of my country's walnut industry. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a walnut peeling and washing machine with a reasonable structure, high green husk removal rate, and suitability for peeling walnuts of different sizes.

[0005] To achieve the above objectives, the present invention employs the following technical solution: a walnut peeling and washing machine, comprising a frame, a feeding mechanism at the top of the frame, a primary peeling mechanism connected to the lower part of the feeding mechanism, a secondary peeling mechanism connected to the tail end of the primary peeling mechanism, and a washing mechanism connected to the lower part of the secondary peeling mechanism; a collecting component is provided at the lower part of the washing mechanism; the feeding mechanism includes a feeding funnel, a discharging turntable at the bottom of the feeding funnel, and a discharging hopper at the bottom of the discharging turntable; a cylindrical cover with closed ends is coaxially arranged on the outer side of the discharging turntable, and the arc surface of the cover... The top of the wall is provided with a feed inlet connected to the feed funnel, and the arc-shaped sidewall of the cover is provided with multiple discharge outlets near the bottom; the primary peeling mechanism includes multiple first rollers and multiple second rollers rotatably arranged in the frame, with a first conveyor belt arranged on the multiple first rollers, and multiple second rollers located below the multiple first rollers, with a second conveyor belt arranged on the multiple second rollers, and multiple metal bosses provided on the surfaces of the first and second conveyor belts; the tail end of the first conveyor belt is inclined near the second conveyor belt; the discharge turntable, any one of the first rollers, and any one of the second rollers are driven by a motor.

[0006] The present invention also has the following technical features: Preferably, the secondary peeling mechanism includes two rows of vertically arranged opposing roller brushes, the roller brushes are rotatably mounted on the frame, and a gap is reserved between the two opposing roller brushes for the walnuts to pass through.

[0007] Preferably, the cleaning mechanism includes a primary cleaning component and a secondary cleaning component; the primary cleaning component includes multiple third idlers rotatably disposed within a frame, and a third conveyor belt is arranged on the multiple third idlers; the surface of the third conveyor belt is provided with multiple metal bosses; the secondary cleaning component includes multiple fourth idlers rotatably disposed within a frame, and a fourth conveyor belt is arranged on the multiple fourth idlers; the fourth conveyor belt is a mesh conveyor belt; the top of the third conveyor belt is provided with multiple nozzles fixed to the frame at intervals, and the top and sides of the fourth conveyor belt are also provided with multiple nozzles fixed to the frame at intervals.

[0008] Furthermore, a gap of less than 4cm is pre-set between the third and fourth conveyor belts.

[0009] Furthermore, the nozzle is connected to the water tank via a hose fixed to the frame.

[0010] Preferably, the collection assembly includes a fruit peel collection box located between the third and fourth conveyor belts, and a fruit collection box located at the rear end of the fourth conveyor belt.

[0011] Preferably, an arc-shaped sieve plate is provided between the secondary peeling mechanism and the washing mechanism.

[0012] Preferably, the feeding turntable is fixed to the frame by a shaft and driven by a motor. The feeding turntable includes a bushing fixedly connected to the shaft and a plurality of paddles symmetrically distributed on the outer side of the bushing.

[0013] Preferably, the discharge port has three sizes, with the width gradually increasing from the bottom to both sides.

[0014] Compared with existing technologies, this invention has the following technical advantages: It employs a two-stage peeling process: the initial peeling is achieved by differential speed drive of upper and lower conveyor belts with an angled contact, followed by a secondary peeling with rotating steel wire brushes, significantly improving the peeling rate and efficiency of green walnuts and reducing breakage. The feeding mechanism uses a combination of a material funnel, a discharge turntable, and a discharge hopper, resulting in high mechanical transmission efficiency and smooth intermittent rotation, contributing to stable equipment operation and improving production efficiency. The pre-set gaps between the arc-shaped screen plate, the third and fourth conveyor belts, and the mesh conveyor belt quickly separate green husk residue from walnut nuts, achieving integrated peeling and screening operations and ensuring the consistency and practicality of the overall machine design. The scientific and reasonable layout of core components such as conveyor belts, brushes, and motor bearings effectively balances radial and axial loads during equipment operation, ensuring overall machine stability. The product structure is simple and compact, significantly saving installation space and reducing equipment load, while also facilitating installation and subsequent maintenance and replacement of vulnerable parts such as hoses and bearings. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of the invention; Figure 2 is an assembly diagram of the feeding turntable of the invention; Figure 3 is a partial sectional view of the feeding turntable of the invention; Figure 4 is a side view of the arc-shaped baffle of the invention; Figure 5 is a side view of the mesh conveyor belt of the invention; Figure 6 is a schematic diagram of the structure of the feeding turntable of the invention; The meanings of the labels in the figures are as follows: 1-frame, 2-feeding funnel, 3-feeding turntable, 4-feeding hopper, 5-cover, 6-feeding inlet, 7-discharge outlet, 8-first idler roller, 9-second idler roller, 10-first conveyor belt, 11-second conveyor belt, 12-roller brush, 13-third idler roller, 14-third conveyor belt, 15-fourth idler roller, 16-fourth conveyor belt, 17-sprayer head, 18-fruit peel collection box, 19-fruit collection box, 20-arc-shaped sieve plate, 21-paddle. Detailed Implementation

[0016] The following detailed explanation of the specific content of the present invention is provided in conjunction with embodiments. These descriptions are intended to explain the present invention and not to limit it.

[0017] Referring to Figures 1 to 6, the present invention provides a walnut peeling and washing machine, including a frame 1. A feeding mechanism is provided at the top of the frame 1. The lower part of the feeding mechanism is connected to a primary peeling mechanism. The tail end of the primary peeling mechanism is connected to a secondary peeling mechanism. The lower part of the secondary peeling mechanism is connected to a washing mechanism. A collection component is provided at the bottom of the washing mechanism. The feeding mechanism includes a feeding funnel 2. A discharging turntable 3 is provided at the bottom of the feeding funnel 2. A discharging hopper 4 is provided at the bottom of the discharging turntable 3. A cylindrical cover 5 with closed ends is provided on the outer side of the discharging turntable 3. A feeding port 6 connected to the feeding funnel 2 is provided at the top of the arc side wall of the cover 5. Multiple discharge ports 7 are provided near the bottom of the arc side wall of the cover 5. The discharging turntable 3 is fixed to the frame 1 by a shaft and driven by a motor. The discharging turntable 3 includes a bushing fixedly connected to the shaft and multiple paddles 21 symmetrically distributed on the outer side of the bushing.

[0018] The discharge port 7 has three sizes, with the width gradually increasing from the bottom to both sides. The feeding mechanism ensures that the walnuts with green husks entering the peeling and washing machine fall orderly and smoothly onto the first conveyor belt 10 of the primary peeling mechanism, reducing the impact on the first conveyor belt 10, while ensuring uniform feeding, avoiding walnut crowding and jamming, and ensuring that each walnut can contact the surfaces of the first conveyor belt 10 and the second conveyor belt 11, increasing the green husk removal rate and extending the service life of the device. The primary peeling mechanism includes multiple first rollers 8 and multiple second rollers 9 rotatably arranged in the frame 1. The first conveyor belt 10 is arranged on the multiple first rollers 8, and the multiple second rollers 9 are located below the multiple first rollers 8. The second conveyor belt 11 is arranged on the multiple second rollers 9. Multiple metal protrusions are provided on the surfaces of the first conveyor belt 10 and the second conveyor belt 11. The tail end of the first conveyor belt 10 is inclined close to the second conveyor belt 11, so that the distance between the end of the first conveyor belt 10 and the second conveyor belt 11 that is close to the feeding mechanism is larger, and the distance between the end that is far from the feeding mechanism is smaller, ensuring that walnuts of different sizes can contact the first conveyor belt 10 and the second conveyor belt 11 at the same time, so as to achieve the piercing and peeling of the green husk.

[0019] The secondary peeling mechanism includes two rows of vertically arranged, oppositely positioned rollers 12. The rollers 12 are rotatably mounted on the frame 1, with a gap between the two opposing rollers 12 for the walnuts to pass through. The vertical arrangement of the secondary peeling mechanism reduces the equipment's footprint, improving space utilization and transfer efficiency. Furthermore, when the walnuts enter the secondary peeling mechanism from the primary peeling mechanism, they undergo a large-angle flip and fall under their own weight, reducing energy requirements while ensuring comprehensive peeling.

[0020] An arc-shaped sieve plate 20 is provided between the secondary peeling mechanism and the washing mechanism. The sieve plate 20 has round holes with a diameter of 3-3.5cm, and most of the peeled green skin is sieved through the round holes.

[0021] The cleaning mechanism includes a primary cleaning assembly and a secondary cleaning assembly. The primary cleaning assembly includes a plurality of third idlers 13 rotatably disposed within the frame 1, and a third conveyor belt 14 is arranged on the plurality of third idlers 13. The surface of the third conveyor belt 14 is provided with a plurality of metal bosses. The secondary cleaning assembly includes a plurality of fourth idlers 15 rotatably disposed within the frame 1, and a fourth conveyor belt 16 is arranged on the plurality of fourth idlers 15. The fourth conveyor belt 16 is a mesh conveyor belt. The mesh conveyor belt allows fine impurities to be filtered and fall off.

[0022] The top of the third conveyor belt 14 is provided with multiple nozzles 17 fixed to the frame 1 at intervals, and the top and sides of the fourth conveyor belt 16 are also provided with multiple nozzles fixed to the frame 1 at intervals. The nozzles 17 are used to rinse the surface of the walnuts after the green skin has been removed; the feeding turntable 3, the first idler roller 8, the second idler roller 9, the third idler roller, the fourth idler roller, and the roller brush are driven by motors.

[0023] The collection components include a fruit peel collection box 18 located between the third conveyor belt 13 and the fourth conveyor belt 14, and a fruit collection box 19 located at the lower rear end of the fourth conveyor belt 16.

[0024] There is a gap of less than 4cm between the third conveyor belt 13 and the fourth conveyor belt 16 to further screen the fruit peels. At the same time, it can also screen small fruits. Small walnuts fall into the peel collection box 18 through the gap, while larger walnuts are further conveyed to the fourth conveyor belt 14 for further cleaning before falling into the fruit collection box 19.

[0025] The nozzle 17 is connected to the water tank via a hose fixed to the frame 1.

[0026] The walnut peeling and washing machine of the present invention operates on the following principle: Walnuts with green husks enter the feeding funnel 2 through the feeding port 6 of the cover 5 and then into the feeding turntable 3. The rotating paddle 21 moves the walnuts along the side wall of the cover 5 and into the feeding hopper 4 through the discharge port 7. The discharge port 7 has three sizes, with its width gradually increasing from the bottom to both sides, which screens the walnuts of different sizes and spreads them evenly into the feeding hopper 4. The feeding hopper 4 further buffers the walnuts, ultimately allowing them to fall orderly and smoothly onto the first conveyor belt 10 of the primary peeling mechanism, reducing the impact on the first conveyor belt 10. Simultaneously, uniform feeding is ensured to prevent walnuts from crowding and getting stuck, ensuring that each incoming walnut can contact the surfaces of the first conveyor belt 10 and the second conveyor belt 11, increasing the green husk removal rate and extending the service life of the device. The first conveyor belt 10 and the second conveyor belt 11 of the primary peeling mechanism squeeze the walnuts from both above and below. Multiple metal protrusions on the surfaces of the first conveyor belt 10 and the second conveyor belt 11 cut the green husk of the walnut, causing it to crack and fall off, and enter the secondary peeling mechanism along with the fruit. One end of the feeding mechanism between the first conveyor belt 10 and the second conveyor belt 11 is... The primary conveyor belt has a larger distance from the feeding mechanism, while the secondary conveyor belt has a smaller distance from the feeding mechanism, ensuring that walnuts of different sizes can simultaneously contact the primary conveyor belt 10 and the secondary conveyor belt 11 to achieve the piercing and peeling of the green husk. The secondary peeling mechanism is vertically arranged, which reduces the equipment's footprint, improves space utilization and transfer efficiency, and allows the walnuts to rotate at a large angle when entering the secondary peeling mechanism and fall under their own weight, reducing energy demand while ensuring a comprehensive peeling angle. The roller brush 12 of the secondary peeling mechanism brushes and peels the surface of the fruit, further removing the husks adhering to the surface. The fruit and peels brushed off by the secondary peeling mechanism fall together. After passing through the arc-shaped sieve plate 20, most of the peels are sieved off. The fruit then enters the primary washing component and is washed by the nozzle 17. There is a gap of less than 4cm between the third conveyor belt 13 of the primary washing component and the fourth conveyor belt 16 of the secondary washing component. The gap further sieves off the peels and can also screen small fruits. Small walnuts fall into the peel collection box 18 through the gap, while larger walnuts are further conveyed to the fourth conveyor belt 14 for further washing before falling into the fruit collection box 19.

[0027] It should be noted that in the description of this invention, the terms "upper", "lower", "front", "rear", "receive", "tail", "lateral", "longitudinal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; any modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention without departing from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A walnut peeling and washing machine, characterized in that, The system includes a frame (1), a feeding mechanism at the top of the frame (1), a primary peeling mechanism connected to the lower part of the feeding mechanism, a secondary peeling mechanism connected to the tail end of the primary peeling mechanism, and a cleaning mechanism connected to the lower part of the secondary peeling mechanism; a collection component is provided at the lower part of the cleaning mechanism; the feeding mechanism includes a feeding funnel (2), a discharging turntable (3) at the bottom of the feeding funnel (2), and a discharging hopper (4) at the bottom of the discharging turntable (3); a cylindrical cover (5) with closed ends is coaxially arranged on the outer side of the discharging turntable (3), and a feeding port (6) connected to the feeding funnel (2) is provided on the top of the arc-shaped sidewall of the cover (5); the arc-shaped sidewall of the cover (5) is provided with a feeding port (6) connected to the feeding funnel (2). The wall near the bottom is provided with multiple discharge ports (7); the primary peeling mechanism includes multiple first rollers (8) and multiple second rollers (9) rotatably arranged in the frame (1), the multiple first rollers (8) are provided with a first conveyor belt (10), the multiple second rollers (9) are located below the multiple first rollers (8), the multiple second rollers (9) are provided with a second conveyor belt (11), the surfaces of the first conveyor belt (10) and the second conveyor belt (11) are provided with multiple metal bosses; the tail end of the first conveyor belt (10) is inclined near the second conveyor belt (11); the feeding turntable (3), any one of the first rollers (8) and any one of the second rollers (9) are driven by a motor.

2. The walnut peeling and washing machine as described in claim 1, characterized in that, The secondary peeling mechanism includes two rows of vertically arranged opposing roller brushes (12), which are rotatably mounted on the frame (1), with a gap reserved between the two opposing roller brushes (12) for the walnuts to pass through.

3. The walnut peeling and washing machine as described in claim 1, characterized in that, The cleaning mechanism includes a primary cleaning component and a secondary cleaning component; the primary cleaning component includes multiple third rollers (13) rotatably disposed within the frame (1), and a third conveyor belt (14) is arranged on the multiple third rollers (13); the surface of the third conveyor belt (14) is provided with multiple metal bosses; the secondary cleaning component includes multiple fourth rollers (15) rotatably disposed within the frame (1), and a fourth conveyor belt (16) is arranged on the multiple fourth rollers (15); the fourth conveyor belt (16) is a mesh conveyor belt; multiple nozzles (17) fixed on the frame (1) are spaced apart on the top of the third conveyor belt (14), and multiple nozzles fixed on the frame (1) are spaced apart on the top and sides of the fourth conveyor belt (16).

4. The walnut peeling and washing machine as described in claim 3, characterized in that, A gap of less than 4cm is pre-set between the third conveyor belt (13) and the fourth conveyor belt (16).

5. The walnut peeling and washing machine as described in claim 3, characterized in that, The nozzle (17) is connected to the water tank via a hose fixed to the frame (1).

6. The walnut peeling and washing machine as described in claim 1, characterized in that, The collection components include a fruit peel collection box (18) located between the third conveyor belt (13) and the fourth conveyor belt (14), and a fruit collection box (19) located at the lower rear end of the fourth conveyor belt (16).

7. The walnut peeling and washing machine as described in claim 1, characterized in that, An arc-shaped sieve plate (20) is provided between the secondary peeling mechanism and the washing mechanism.

8. The walnut peeling and washing machine as described in claim 1, characterized in that, The feeding turntable (3) is fixed to the frame (1) by a shaft and driven by a motor. The feeding turntable (3) includes a bushing fixedly connected to the shaft and multiple paddles (21) symmetrically distributed on the outside of the bushing.

9. The walnut peeling and washing machine as described in claim 1, characterized in that, The discharge port (7) is provided with three sizes, with the width gradually increasing from the bottom to both sides.

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