Pecan shell breaking and cleaning device

Abstract

The invention discloses a pecan shell breaking and cleaning device. The device comprises a rack, a conveying mechanism, a humidifying mechanism, a feeding mechanism, an extrusion shell breaking mechanism, a drying mechanism and a sorting mechanism. The rack comprises a first rack and a second rack; the feeding mechanism, the extrusion shell breaking mechanism, the drying mechanism and the sorting mechanism are sequentially arranged on the second rack from top to bottom; the conveying mechanism is arranged on the first rack and used for conveying pecans with shells to be broken to the feeding mechanism. The humidifying mechanism is arranged on the first machine frame, located above the conveying mechanism and used for conducting pre-humidifying treatment on the pecans to be subjected to shell breaking on the conveying mechanism. Through the integrated process of pre-humidification before shell breaking, extrusion shell breaking, drying and sorting, continuous shell breaking and cleaning operation of pecans can be achieved, the shell breaking efficiency is improved, and the kernel breakage rate is reduced.

Description

Technical Field

[0001] This invention relates to the field of nut processing equipment, specifically to a pecan shelling and cleaning device. Background Technology

[0002] Pecans have immense value; their thin, easy-to-peel skin and plump, oily kernels make them a delicious food that can be eaten raw or cooked. Traditionally, pecans are cracked manually. Workers place the pecans on a cutting board and gently tap them with a hammer to crack them open, then use pliers or scissors to peel off the outer shell and remove the kernel. Compared to machine processing, traditional manual labor is labor-intensive, inefficient, and carries certain risks, and cannot meet the ever-increasing consumer demand.

[0003] Currently available pecan shelling machines on the market mostly use a single mechanical structure, resulting in poor shelling efficiency and an inability to efficiently separate the kernel from the shell. This leads to a low kernel-shell separation ratio and a low whole kernel rate, increasing sorting costs, reducing production efficiency, and degrading the quality of pecan kernels. Therefore, a more efficient and precise pecan shelling device is needed. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a pecan shelling and cleaning device that can solve the problems of low pecan shell-kernel separation ratio and low whole kernel rate.

[0005] Technical Solution: This invention provides a pecan shelling and cleaning device, including a frame, a conveying mechanism, a humidifying mechanism, a feeding mechanism, a crushing mechanism, a drying mechanism, and a sorting mechanism; the conveying mechanism is used to transport the pecans to be shelled to the feeding mechanism; the humidifying mechanism is located above the conveying mechanism and is used to humidify the pecans during the conveying process; the crushing mechanism is used to crush the humidified pecans; the drying mechanism is used to dry the crushed material; and the sorting mechanism is used to separate and collect the shells and kernels.

[0006] The frame includes a first frame and a second frame; the conveying mechanism and the humidifying mechanism are disposed on the first frame, the conveying mechanism is used to transport the pecans to be shelled to the feeding mechanism, and the humidifying mechanism is located above the conveying mechanism to humidify the pecans to be shelled on the conveying mechanism; the feeding mechanism, the extrusion shelling mechanism, the drying mechanism and the sorting mechanism are disposed sequentially from top to bottom on the second frame.

[0007] Preferably, the transmission mechanism includes a conveyor belt, partitions, guide plates, a first motor, a drive roller, a reversing roller, and a discharge plate; the first motor and the drive roller are disposed at the first end of the conveyor belt, the reversing roller is disposed at the first end of the conveyor belt, and the first motor drives the drive roller to rotate, thereby driving the conveyor belt to move; the guide plates are disposed on both sides of the conveyor belt along the length direction of the conveyor belt; the partitions are fixed at intervals on the conveyor belt; the discharge plate is disposed at the first end of the conveyor belt for receiving pecans to be shelled on the conveyor belt.

[0008] Preferably, the humidification mechanism includes two first pipes and at least two second pipes; the first pipes are arranged parallel to the guide plate and above the guide plate, with a preset distance between them; the at least two second pipes are perpendicular to the first pipes and spaced apart between them; pressurized water spray holes are provided on the first and second pipes, facing the conveyor belt, and the spray range and water volume can be controlled by adjusting the opening and closing size of the nozzles and the water pressure, while different humidification effects can be achieved by setting the spray window time.

[0009] Preferably, the device further includes a water tank containing a heating resistance wire and a temperature detector, for supplying water at a preset temperature to the humidification mechanism.

[0010] Furthermore, the preset temperature is 50℃-70℃.

[0011] Preferably, the extrusion shell-breaking mechanism includes a base with a certain height, and a groove is formed on the base; the extrusion shell-breaking mechanism also includes a frustum-shaped extrusion roller, a connecting shaft, and a second motor, the connecting shaft being fixedly connected to the frustum-shaped extrusion roller, and the second motor being able to drive the frustum-shaped extrusion roller to rotate through the connecting shaft; the frustum-shaped extrusion roller is disposed in the groove and has a gap between it and the inner wall of the groove, the gap gradually decreasing from top to bottom.

[0012] Preferably, the feeding mechanism includes a feeding housing, a feeding port, and a discharging port; the feeding port is used to receive pecans to be shelled transported by the transmission mechanism; the second motor is disposed in the feeding housing, and the connecting shaft passes through the discharging port and is fixedly connected to the output shaft of the second motor; the discharging port is used to feed the pecans to be shelled into the gap.

[0013] Preferably, the drying mechanism includes a drying shell and a drying fan; one side wall of the drying shell is an arc-shaped side wall, from which the pecans, after being cracked, slide into the interior of the drying shell; two adjacent side walls of the arc-shaped side wall are ventilated side walls, and ventilation holes are provided on the ventilated side walls; the drying fan is fixedly mounted on either of the ventilated side walls; the bottom wall of the drying shell is movable relative to the drying shell, for allowing the dried pecans to enter the sorting mechanism.

[0014] Preferably, the sorting mechanism includes a double-layer vibrating screen and a nut collection channel. The double-layer vibrating screen consists of upper and lower layers. The aperture of the upper screen is smaller than the diameter of a whole pecan but larger than the size of a pecan after it has been shelled. The height of the screen inlet side is about 30mm higher than the other side where it connects to the shell. Meanwhile, the aperture of the lower screen is smaller than the diameter of the pecan shell but larger than the size of the pecan nut. The inlet side is connected to an extended discharge plate and is about 30mm lower than the other side. At this point, the two screens form a double inclined plane with opposite inclinations. The minimum distance between the lowest point of the upper screen and the highest point of the lower screen is about 50mm. The nut collection channel is located below the double-layer vibrating screen and has the same inclination as the lower screen. The channel outlet side has a square outlet pointing vertically downwards.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0016] (1) By adopting an innovative pre-humidification method before shelling, the present invention can efficiently achieve low-damage shelling processing of pecans. Compared with the existing technology, it effectively improves the success rate of shelling pecans and reduces the damage rate of kernels.

[0017] (2) By setting up an integrated process of extrusion shelling mechanism, drying mechanism and sorting mechanism, the present invention realizes the automated processing of shelling and kernel separation of pecans. Compared with the traditional manual shelling method, it greatly reduces labor intensity and improves production efficiency.

[0018] (3) The precise sorting by the double-layer vibrating screen effectively solves the problems of low shell-kernel separation ratio and low whole kernel rate of traditional pecan shelling equipment, improves economic efficiency and meets the growing consumer demand. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the pecan shelling and cleaning device in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the transmission mechanism and humidification mechanism in an embodiment of the present invention;

[0021] Figure 3This is a schematic diagram of the feeding mechanism in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the extrusion and shell-breaking mechanism in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the drying mechanism in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the sorting mechanism in an embodiment of the present invention;

[0025] Reference numerals: 1. Frame; 101. First frame; 102. Second frame; 2. Conveying mechanism; 201. Conveyor belt; 202. Partition plate; 203. Guide plate; 204. First motor; 205. Drive roller; 206. Reversing roller; 207. Discharge plate; 3. Humidification mechanism; 301. First pipeline; 302. Second pipeline; 303. Pressurized water spray hole; 4. Feeding mechanism; 401. Feeding housing; 402. Feed inlet; 40 3. Discharge port; 5. Extrusion and shell breaking mechanism; 501. Base; 502. Groove; 503. Extrusion roller; 504. Connecting shaft; 505. Second motor; 506. Gap; 6. Drying mechanism; 601. Drying shell; 602. Drying fan; 603. Arc-shaped side wall; 604. Ventilation side wall; 605. Bottom wall; 7. Sorting mechanism; 701. Double-layer vibrating screen; 702. Nut collection channel; 703. Vibrating motor; 8. Water tank. Detailed Implementation

[0026] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] It should be noted in this embodiment that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "linked" should be interpreted broadly. For example, it can refer to a mechanical or electrical connection, or the internal connection between two elements. It can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] This invention provides a pecan shelling and cleaning device that improves the whole kernel rate by pre-humidifying and double-layer screening technology, achieves rapid and complete separation of kernels from shells, reduces shell content, reduces manual intervention, and improves production efficiency.

[0030] See Figures 1 to 6 This embodiment provides a pecan shelling and cleaning device, including a frame 1, a conveying mechanism 2, a humidifying mechanism 3, a feeding mechanism 4, a crushing mechanism 5, a drying mechanism 6, and a sorting mechanism 7. The frame 1 includes a first frame 101 and a second frame 102, providing a stable support structure for the entire device. The feeding mechanism 4, the crushing mechanism 5, the drying mechanism 6, and the sorting mechanism 7 are arranged sequentially from top to bottom on the second frame 102. The conveying mechanism 2 is arranged on the first frame 101 and is used to transport the pecans to be shelled to the feeding mechanism 4. The humidifying mechanism 3 is arranged on the first frame 101 and is located above the conveying mechanism 2, and is used to humidify the pecans to be shelled on the conveying mechanism 2.

[0031] The first frame 101 is used to support the conveying mechanism 2 and the humidifying mechanism 3, and the second frame 102 is used to support the feeding mechanism 4, the extrusion and shelling mechanism 5, the drying mechanism 6, and the sorting mechanism 7. The positions of the first frame 101 and the second frame 102 can be arranged as needed, as long as the pecans to be shelled conveyed by the conveying mechanism 2 can enter the feeding mechanism 4, and there are no restrictions here.

[0032] The conveying mechanism 2 is mounted on the first frame 101 and includes a conveyor belt 201, partitions 202, guide plates 203, a first motor 204, drive rollers 205, reversing rollers 206, and a discharge plate 207. The conveyor belt 201 carries and conveys pecans to be shelled, specifically conveying them from the bottom to the top. The surface of the conveyor belt 201 may have perforations to facilitate the drainage of moisture during the humidification process. The first motor 204 and drive rollers 205 are located at the first end of the conveyor belt 201, and the reversing rollers 206 are located at the second end. The first motor 204 drives the drive rollers 205 to rotate, thereby driving the conveyor belt 201 to move and achieve continuous conveying of pecans. Guide plates 203 are arranged along the length of the conveyor belt 201 on both sides to prevent pecans from rolling to the sides during conveying. Partitions 202 are fixed at intervals on the conveyor belt 201 to prevent pecans from rolling backward and to ensure orderly conveying. The discharge plate 207 is located at the first end of the conveyor belt 201 and is used to receive the pecans to be shelled on the conveyor belt 201 and guide them into the feeding mechanism 4.

[0033] In some implementations, the drive roller 205 and the reversing roller 206 can be connected and fixed to the first frame 101 by bolts, thereby stabilizing the operation of the conveyor belt 201.

[0034] In some implementations, multiple passive rollers may be added to form a horizontal conveying section and an upward conveying section on the conveyor belt 201. Pecans to be shelled are first placed on the horizontal conveying section and then conveyed upward through the upward conveying section.

[0035] The humidification mechanism 3 is mounted on the first frame 101 and located above the conveying mechanism 2. It can be fixed to the first frame 101 by a support rod. The humidification mechanism 3 includes two first pipes 301 and at least two second pipes 302. The first pipes 301 are arranged parallel to the guide plate 203 and located above the guide plate 203. The first pipes 301 and the guide plate 203 are spaced apart by a preset distance to ensure humidification effect without affecting the normal conveying of pecans. At least two second pipes 302 are perpendicular to the first pipes 301 and spaced apart between the two first pipes 301 to form a grid-like water spray system. The first pipes 301 and the second pipes 302 are provided with pressurized water spray holes 303, which face the conveyor belt 201. The spray range and water volume can be controlled by adjusting the opening and closing size of the nozzles and the water pressure. At the same time, different humidification effects can be achieved by setting the spray window time, so as to uniformly humidify the pecans on the conveyor belt 201. Humidification softens the shell of pecans, reducing the force required to crack them open, increasing cracking efficiency, and minimizing kernel breakage.

[0036] In some embodiments, the device also includes a water tank 8, which contains a heating resistance wire and a temperature detector for supplying water at a preset temperature to the humidification mechanism 3. The water tank 8 can be installed on or outside the frame, and the specific location is not limited, as long as it can be connected to the humidification mechanism 3 through a pipeline.

[0037] Preferably, the preset temperature of the water in water tank 8 is 50℃-70℃. This temperature range can effectively soften the shell of pecans without causing heat damage to the kernels, ensuring the best humidification effect.

[0038] In some embodiments, the feeding mechanism 4 is located at the top of the second frame 102 and includes a feeding housing 401, a feeding port 402, and a discharging port 403. The feeding port 402 is used to receive the pecans to be shelled transported by the transfer mechanism 2. The feeding port 402 is designed with a square structure to facilitate the smooth entry of the pecans. The interior of the feeding housing 401 is designed with a draft angle structure to guide the pecans to converge towards the center. The discharging port 403 is designed with a circular structure and extends to the center of the feeding housing 401 to accurately deliver the pecans to be shelled to the working area of ​​the extrusion shelling mechanism 5.

[0039] In some embodiments, the extrusion and shell-breaking mechanism 5 is disposed below the feeding mechanism 4, and includes a base 501 of a certain height, on which a groove 502 is formed. The extrusion and shell-breaking mechanism 5 also includes a frustum-shaped extrusion roller 503, a connecting shaft 504, and a second motor 505. The second motor 505 is disposed in the feeding housing 401, and the connecting shaft 504 passes through the discharge port 403 and is fixedly connected to the output shaft of the second motor 505. The connecting shaft 504 is fixedly connected to the extrusion roller 503, and the second motor 505 can drive the extrusion roller 503 to rotate through the connecting shaft 504. The extrusion roller 503 is disposed in the groove 502 and has a gap 506 between it and the inner wall of the groove 502, the gap 506 gradually decreasing from top to bottom.

[0040] As pecans fall from the discharge port 403, they slide into the gap 506 between the extrusion roller 503 and the inner wall of the groove 502. As the gap 506 gradually narrows, the pecans may become stuck at a certain point. At this time, the extrusion roller 503 rotates under the drive of the second motor 505, causing the pecans to generate centrifugal force due to rotation. Simultaneously, the pecans experience friction, shearing, and extrusion forces with the extrusion roller 503 and the inner wall of the groove 502, thus breaking the shell. After breaking, the pecans, with their smaller diameter, fall through the lower gap 506 into the drying mechanism 6.

[0041] In some embodiments, the drying mechanism 6 is located below the extrusion and shelling mechanism 5, and includes a drying shell 601 and a drying fan 602. One side wall of the drying shell 601 is an arc-shaped side wall 603. After being shelled, the pecans slide down from the arc-shaped side wall 603 into the interior of the drying shell 601. The design of the arc-shaped side wall 603 can buffer the impact force of the pecans and avoid secondary damage to the kernels. The two adjacent side walls of the arc-shaped side wall 603 are ventilation side walls 604, and ventilation holes are provided on the ventilation side walls 604 to form a good ventilation system. The drying fan 602 is fixedly installed on either of the ventilation side walls 604, and sends hot air into the drying shell 601 through the ventilation holes to dry the shelled pecans, remove surface moisture, and prevent the kernels from molding and spoiling. The bottom wall 605 of the drying shell 601 can move relative to the drying shell 601. For example, the bottom wall 605 can be set in the form of a pull-out plate. The timing of the dried pecans entering the sorting mechanism 7 can be controlled by opening and closing the pull-out plate.

[0042] In some embodiments, the sorting mechanism 7 is located below the drying mechanism 6 and includes a double-layer vibrating screen 701 and a nut collection channel 702. The double-layer vibrating screen 701 consists of upper and lower layers. The aperture of the upper layer is smaller than the diameter of a whole pecan but larger than the size of a pecan after it has been cracked. The aperture of the lower layer is smaller than the diameter of pecan shell fragments but larger than the size of a pecan kernel. Both screens have a certain degree of inclination and are in opposite directions. This size design can effectively distinguish between whole pecans and kernels and separate the shell fragments from the kernels. Driven by a vibrating motor 703, the double-layer vibrating screen 701 vibrates, causing incompletely cracked pecans to remain on the upper layer of the screen and slide down. At the same time, the shell fragments remain between the two screens and slide down from the outlet on the other side, while the kernels fall through the screen holes. The nut collection channel 702 is located below the double-layer vibrating screen 701. The interior is designed with a smooth inclined surface structure. A square discharge port with a vertical downward direction is provided on one side of the channel discharge port. The nuts automatically slide towards the discharge port under the action of gravity, realizing the automatic collection and output of the nuts.

[0043] The working principle of the entire device is as follows: Pecans to be shelled are first conveyed by the conveying mechanism 2, and during the conveying process, they are humidified by the humidifying mechanism 3 to soften the shells; the humidified pecans enter the extrusion shelling mechanism 5 through the feeding mechanism 4, where they are shelled under the extrusion action of the frustum-shaped extrusion roller 503; the shelled pecans then enter the drying mechanism 6 for drying to remove excess moisture; finally, the kernels are separated from the shells by the sorting mechanism 7, completing the entire shelling and cleaning process. This device has a compact structure, high working efficiency, and can realize continuous and automated shelling and cleaning operations for pecans.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

[0045] The contents not described in detail in this embodiment belong to the prior art known to those skilled in the art; the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications to the specific implementation of the present invention or equivalent substitutions to some technical features without departing from the spirit of the technical solutions of the present invention should all be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A pecan shelling and cleaning device, characterized in that, The system includes a frame (1), a conveying mechanism (2), a humidifying mechanism (3), a feeding mechanism (4), a crushing mechanism (5), a drying mechanism (6), and a sorting mechanism (7). The conveying mechanism (2) is used to transport the pecans to be crushed to the feeding mechanism (4). The humidifying mechanism (3) is located above the conveying mechanism (2) and is used to humidify the pecans during the conveying process. The crushing mechanism (5) is used to crush the humidified pecans. The drying mechanism (6) is used to dry the crushed material. The sorting mechanism (7) is used to separate and collect the shells and kernels.

2. The pecan shelling and cleaning device according to claim 1, characterized in that, The frame (1) includes a first frame (101) and a second frame (102); the conveying mechanism (2) and the humidifying mechanism (3) are arranged on the first frame (101). The conveying mechanism (2) is used to convey the pecans to be shelled to the feeding mechanism. The humidifying mechanism (3) is located above the conveying mechanism (2) and is used to humidify the pecans to be shelled on the conveying mechanism (2); the feeding mechanism (4), the extrusion shelling mechanism (5), the drying mechanism (6) and the sorting mechanism (7) are arranged from top to bottom on the second frame (102).

3. The pecan shelling and cleaning device according to claim 1, characterized in that, The transmission mechanism (2) includes a conveyor belt (201), a partition (202), a guide plate (203), a first motor (204), a drive roller (205), a reversing roller (206), and a discharge plate (207). The first motor (204) and the drive roller (205) are located at the first end of the conveyor belt (201), and the reversing roller (206) is located at the second end of the conveyor belt (201). The first motor (204) drives the drive roller (205) to rotate, thereby driving the conveyor belt (201) to move. The guide plate (203) is located on both sides of the conveyor belt (201) along the length direction of the conveyor belt (201). The partition (202) is fixed at intervals on the conveyor belt. The discharge plate (207) is located at the first end of the conveyor belt (201) and is used to receive pecans to be shelled on the conveyor belt (201).

4. The pecan shelling and cleaning device according to claim 3, characterized in that, The humidification mechanism (3) includes two first pipes (301) and at least two second pipes (302); the first pipes (301) are arranged parallel to the guide plate (203) and above the guide plate (203), with a preset distance between them; the at least two second pipes (302) are perpendicular to the first pipes (301) and spaced apart between them, and each of the at least two second pipes (302) is a multi-segment spray pipe with independent control, which can be manually closed or opened according to the amount of material fed to control the spray range; pressurized water spray holes (303) are provided on the first pipes (301) and the second pipes (302), and the pressurized water spray holes (303) face the conveyor belt. (201) It adopts an adjustable angle fan-shaped nozzle. According to the height of the pecan stack and the speed of the conveyor belt, the opening and closing size of the nozzle and the water pressure can be adjusted by the opening of the electromagnetic valve matrix and the regulating valve in the pipeline, thereby controlling the spraying range and spraying volume of each row of nozzles. The first motor (204) adopts a variable frequency speed regulation synchronous control strategy. By adjusting the speed, the time for the fruit to pass through the spraying area is controlled to achieve different humidification effects. The start and stop of the spraying device are linked with the first motor (204) and the subsequent shell-breaking device. When the signal that the shell-breaking mechanism is ready and the first motor (204) has started to rotate is received, the water pump of the spraying device will start and start pumping water for spraying. If only one of the signals is received, the spraying will not start. The water pump is regulated by an electronically controlled valve. The spraying time and the interval between two sprays can be controlled by setting the opening and closing time of the valve each time.

5. The pecan shelling and cleaning device according to claim 1, characterized in that, It also includes a water tank (8), which is equipped with a heating resistance wire and a temperature detector, and can be used to supply water at a preset temperature to the humidification mechanism (3).

6. The pecan shelling and cleaning device according to claim 5, characterized in that, The preset temperature is 50℃-70℃.

7. The pecan shelling and cleaning device according to claim 1, characterized in that, The extrusion and shell-breaking mechanism (5) includes a base (501) with a certain height, and a groove (502) is provided on the base (501); the extrusion and shell-breaking mechanism (5) also includes a frustum-shaped extrusion roller (503), a connecting shaft (504) and a second motor (505), the connecting shaft (504) is fixedly connected to the frustum-shaped extrusion roller (503), and the second motor (505) can drive the frustum-shaped extrusion roller (503) to rotate through the connecting shaft (504); the frustum-shaped extrusion roller (503) is arranged in the groove (502) and has a gap between it and the inner wall of the groove (502), the gap gradually decreasing from top to bottom.

8. The pecan shelling and cleaning device according to claim 7, characterized in that, The feeding mechanism (4) includes a feeding housing (401), a feeding port (402), and a discharging port (403); the feeding port (402) is used to receive the pecans to be shelled transported by the transmission mechanism (2); the second motor (505) is disposed in the feeding housing (401), and the connecting shaft (504) passes through the discharging port (403) and is fixedly connected to the output shaft of the second motor (505); the discharging port (403) is used to send the pecans to be shelled into the gap.

9. The pecan shelling and cleaning device according to claim 1, characterized in that, The drying mechanism (6) includes a drying shell (601) and a drying fan (602); one side wall of the drying shell (601) is an arc-shaped side wall (603), and the pecans after being cracked slide down from the arc-shaped side wall (603) into the interior of the drying shell (601); the two adjacent side walls of the arc-shaped side wall (603) are ventilation side walls (604), and ventilation holes are provided on the ventilation side walls (604); the drying fan (602) is fixedly installed on any of the ventilation side walls (604); the bottom wall (605) of the drying shell can move relative to the drying shell (601) to allow the dried pecans to enter the sorting mechanism (7).

10. The pecan shelling and cleaning device according to claim 1, characterized in that, The sorting mechanism (7) includes a double-layer vibrating screen (701) and a nut collection channel (702). The double-layer vibrating screen (701) is divided into upper and lower layers. The aperture of the upper screen is smaller than the diameter of a whole pecan and larger than the size of a pecan after it has been shelled. The height of the screen inlet on one side is about 30 mm higher than the other side where it is connected to the shell. Meanwhile, the aperture of the lower screen is smaller than the diameter of the pecan shell and larger than the size of the pecan nut. The inlet on one side is connected to the extended discharge plate and is about 30 mm lower than the other side. At this time, the two screens form a double inclined plane with opposite inclination directions. The minimum distance between the lowest point of the upper screen and the highest point of the lower screen is about 50 mm. The nut collection channel (702) is located below the double-layer vibrating screen (701) and has the same inclination as the lower screen of the double-layer vibrating screen (701). The channel discharge port on one side has a square discharge port with a vertical downward direction.

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