A nut kernel and shell breaking apparatus

Abstract

The present application relates to the technical field of crushing equipment, and discloses a kernel and shell crushing device for nuts, which solves the problem of high shell content in the crushing of nut kernel and shell mixture, affecting the oil quality, by utilizing the different limit bearing pressures of kernel and fiber shell, and by using the elastic crushing roller to adapt the pressure of the mixture, the kernel is directionally crushed, the fiber shell structure is not broken, the fiber shell keeps the original shape and size, is conveniently screened by the crushing screen, the shell content in the crushed kernel is further reduced by the second crushing mechanism, the surface of the crushing roller is provided with pins, when the crushing roller rolls on the kernel and shell mixture, the pins are more likely to break the surface structure of the kernel, promote the crushing, and can be inserted into the fiber, when the crushing roller rolls on the surface of the crushing screen, the pins can lift the shell and move to the range of the shell unloading assembly, and the shell is unloaded by the shell unloading assembly, avoiding the accumulation of fiber shell on the upper side of the crushing screen.

Description

Technical Field

[0001] This invention relates to the field of crushing equipment technology, specifically to a nut kernel and shell crushing device. Background Technology

[0002] Nuts, including *Sapindus mukorossi* and hazelnuts, are rich in oil and can be used to extract edible oil. Before refining oil from these nuts, they need to be shelled, sieved, and crushed sequentially. Because the kernels are tightly attached to the shell and are brittle while the shells are thick and hard, they are difficult to open. The density of the shell and kernel is almost equal, resulting in poor separation. Therefore, a certain proportion of shell (wood fiber, also called fibrous shell) will remain in the sieved kernels. Current equipment achieves a shell and kernel removal rate of approximately 86%.

[0003] Before refining nuts into oil, crushing is done using a pulverizer. Since nuts contain some fibrous shells, they are usually crushed along with the kernels during the crushing process, or they are sieved multiple times using a more precise screening device. When crushing nuts along with the kernels, the inclusion of fibrous shells may affect the color and taste of the oil, and it is also not conducive to the recovery of the residue cake. At the same time, the presence of fibrous shells will reduce the oil extraction efficiency, because fibrous shells are not easy to press out oil, and their presence will take up space, reducing the contact area of ​​the kernels being squeezed, thereby reducing the oil yield. On the other hand, sieving multiple times using a more precise screening device will increase input costs and operating procedures. Summary of the Invention

[0004] The purpose of this invention is to provide a nut kernel and shell crushing device, which solves the problem of high shell content in the crushing of nut kernel and shell mixtures, which affects the quality of oil extraction.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nut kernel and shell crushing device, including a machine base, and a second crushing mechanism and a first crushing mechanism mounted on the machine base. The first crushing mechanism initially crushes the kernels while removing the fibrous shells, and the second crushing mechanism further crushes the initially crushed kernels.

[0006] The first crushing mechanism includes an assembly cover, on the bottom side of which is a crushing screen for screening small kernel particles. On the upper side of the crushing screen is a swinging crushing assembly for crushing only kernels. The crushing assembly includes multiple fixed discs arranged side by side. The fixed discs are fixed in series by assembly rollers. Multiple crushing rollers are elastically mounted on the outer side of the fixed discs by multiple circumferentially arranged springs. The pressure of the crushing rollers on the kernel and shell mixture on the upper surface of the crushing screen is less than the pressure of crushing the fiber shells but greater than the pressure of crushing the kernels. The crushing rollers swinging on the upper side of the crushing screen crush only the kernels in the kernel and shell mixture. The kernels with smaller diameters after crushing are screened by the crushing screen, while the uncrushed fiber shells remain on the crushing screen.

[0007] As a further description of the above technical solution: the assembly cover includes a horizontally arranged outer cylinder, with side covers fixed on both sides of the outer cylinder. A swing roller coaxial with the outer cylinder is rotatably supported between the two side covers via a support frame. The crushing screen is assembled on the lower side of the outer cylinder. The fixed plate is rotatably connected to the assembly roller via a hanging frame and is assembled below the swing roller. One end of the swing roller is connected to a swing plate. A motor B that drives the swing plate to swing is provided on one side of the swing plate. A drive rod is eccentrically connected to the output end of the motor B. One end of the drive rod is eccentrically rotatably connected to the side surface of the swing plate.

[0008] As a further description of the above technical solution: the lower surface of the rolling roller and the upper surface of the rolling screen are provided with a gap, the diameter of the screen hole of the rolling screen is greater than the length of the gap and less than the radius of the fiber shell, and the length of the gap is less than one-third of the diameter of the kernel.

[0009] As a further description of the above technical solution: the rolling roller is circumferentially fixedly equipped with multiple pins for rolling, the pins are inserted into the fiber shell, and a shell removal assembly for removing the fiber shell from the surface of the pins is provided on one side of the rolling roller.

[0010] As a further description of the above technical solution: the unpacking assembly includes an unpacking component for removing the fiber shell from the surface of the insert pin, and a receiving component for receiving the fiber shell removed by the unpacking component.

[0011] As a further description of the above technical solution: the shell removal component includes a ventilation hood, on the lower surface of which a jet pipe and a stop pin are fixedly mounted and suspended on one side of the rolling roller. The air outlet of the jet pipe is aligned with the surface of the rolling roller, and one end of the ventilation hood is connected to an air pump through an air supply pipe.

[0012] As a further description of the above technical solution: the receiving component includes a collecting cover disposed below the stop pin, and the collecting cover is provided with a rubber pad on the side near the rolling roller, and the upper side of the rubber pad is suspended on one side of the rolling roller by multiple pull ropes.

[0013] As a further description of the above technical solution: the side cover has an outlet opening on one end of the movement path of the collection hood, the lower side of the outlet opening is provided with a guide plate for guiding the discharge, the collection hood has a discharge hole that is movably connected to the outlet opening at one end, and the jet pipe is inclined towards the discharge hole.

[0014] As a further description of the above technical solution: the upper side of the outer cylinder is provided with a quantitative feeding component, the feeding component includes a feeding box, and a conveying roller is rotatably mounted at the communication position between the feeding box and the outer cylinder. The surface of the conveying roller is provided with multiple feeding grooves in the circumferential direction, and one end of the conveying roller shaft is connected to a motor A that drives it to rotate.

[0015] As a further description of the above technical solution: a feeding hopper connected to a second crushing mechanism is provided on the lower side of the outer cylinder and below the crushing screen. The second crushing mechanism includes a crushing box, rotating crushing blades inside the crushing box, and a discharge port on the lower side of the crushing box. The feeding hopper is connected to the crushing box.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this invention are as follows: Utilizing the different ultimate bearing capacities of kernels and fibrous shells, the mixture is subjected to appropriate pressure by an elastic grinding roller, resulting in directional crushing of the kernels without breaking the fibrous shell structure. This allows the fibrous shells to maintain their original shape and size, facilitating smooth sieving by the grinding screen and further reducing the shell content in the kernels crushed by the second crushing mechanism. Simultaneously, the grinding roller surface is equipped with pins. When the grinding roller rolls on the kernel-shell mixture, the pins more easily break through the surface structure of the kernels, promoting crushing, and can also insert into the fibers. When the grinding roller rolls on the upper surface of the grinding screen, the pins can push the shells into the fibrous shells. The conveyor belt moves the material to the area of ​​the unloading component, where it retracts and collects the fibrous shells on the inside, preventing them from accumulating on the upper side of the crushing screen and affecting subsequent screening. The design of the insert pins allows for the high-speed airflow to remove any kernels stuck on the pins beforehand. The rubber pad's blocking effect and the airflow from the jet pipe both promote the kernels to automatically detach from the pin surface, preventing them from moving above the rubber pad and falling into the collection hood, thus avoiding waste. Simultaneously, the angled jet pipe angle allows some of the air blown into the collection hood to push the fibrous shells remaining inside towards the discharge port, ultimately resulting in automatic discharge from the shell outlet. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the present invention;

[0019] Figure 3 This is a right-side structural schematic diagram of the first crushing mechanism of the present invention;

[0020] Figure 4 This is a schematic diagram of the left side of the first crushing mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram of the explosion structure of the first crushing mechanism of the present invention;

[0022] Figure 6 This is a schematic cross-sectional view of the assembly cover and feeding assembly of the present invention;

[0023] Figure 7 This is a schematic diagram of the compaction assembly and its surrounding structure according to the present invention;

[0024] Figure 8 This is a plan view of the compaction assembly, compaction screen, and unloading assembly of the present invention;

[0025] Figure 9 For the present invention Figure 8 Enlarged diagram of A in the middle;

[0026] Figure 10 This is a schematic diagram of the crushing component structure of the present invention;

[0027] Figure 11 For the present invention Figure 10 Enlarged diagram of B in the diagram;

[0028] Figure 12 This is a schematic diagram of the exploded structure of the crushing component of the present invention;

[0029] Figure 13 This is a schematic diagram of the shell removal assembly structure of the present invention;

[0030] Figure 14 This is a schematic diagram of one end of the shell removal assembly of the present invention;

[0031] Figure 15 This is a schematic diagram of the shell removal component of the present invention.

[0032] In the diagram: 10. Machine base; 20. Second crushing mechanism; 21. Crushing box; 22. Crushing blade; 23. Discharge port; 30. First crushing mechanism; 31. Assembly cover; 311. Outer cylinder; 312. Side cover; 313. Support frame; 314. Feed hopper; 315. Shell outlet; 316. Guide plate; 32. Feeding assembly; 321. Feeding box; 322. Motor A; 323. Feeding roller; 324. Feeding groove; 33. Swinging roller; 331 332. Hanging tray; 34. Motor B; 341. Drive rod; 35. Crushing assembly; 351. Assembly roller; 352. Insert pin; 353. Crushing roller; 354. Fixed plate; 355. Spring; 356. Cover plate; 36. Crushing screen; 37. Unloading assembly; 371. Ventilation hood; 372. Air jet pipe; 373. Stop pin; 374. Collection hood; 375. Rubber pad; 376. Pull rope; 38. Air pump; 381. Air supply pipe. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0035] Regarding the background technology, for the mixture of nut kernels and shells that has already undergone shelling and screening, the proportion of fibrous shells is relatively small, approximately less than 15%. The fibrous shells embedded within the kernels are generally similar in diameter to the kernel; those larger or smaller than the kernel have already been screened out during the initial shelling and screening process. Therefore, this embodiment further screens and crushes the mixture of nut kernels and shells with similar diameters. Furthermore, the screened kernel and shell mixture generally undergoes an air-drying process before oil extraction. Therefore, the air-dried kernels are then ground... When pressed, nuts are easily crushed into small particles. The fibrous shell of nuts is mainly composed of cellulose, hemicellulose, and lignin. These components give the shell high hardness and toughness, making it difficult to crush. As for the fibrous shell after air drying, as the moisture content decreases, the shell hardness increases and the fiber structure mechanically hardens. Therefore, the fibrous shell after air drying is harder than the moist state and is less difficult to crush. Currently, the crushing pressure of nut fibrous shells is about 100N-400N, while the crushing pressure of air-dried kernels is much lower than this value.

[0036] Combination Figures 1-15 A nut kernel and shell crushing device includes a machine base 10, and a second crushing mechanism 20 and a first crushing mechanism 30 mounted on the machine base 10. The first crushing mechanism 30 initially crushes the kernels and removes the fibrous shells at the same time. The second crushing mechanism 20 further crushes the initially crushed kernels.

[0037] The first crushing mechanism 30 includes an assembly cover 31. A crushing screen 36 for screening small kernel particles is located on the bottom side of the assembly cover 31. A oscillating crushing assembly 35 for crushing only kernels is mounted on the upper side of the crushing screen 36. The crushing assembly 35 includes multiple fixed discs 354 arranged side-by-side. The width of each fixed disc 354 is adapted to the width of a single kernel, preventing the fixed discs 354 from simultaneously squeezing a mixture of multiple kernels and shells along the circumference. The fixed discs 354 are fixedly connected in series by assembly rollers 351. Multiple springs 35 arranged circumferentially are located on the outer side of each fixed disc 354. 5. The elastic assembly is equipped with a crushing roller 353. One side of the crushing roller 353 is covered by a cover plate 356, which covers the fixing plate 354 and the spring 355. The pressure of the crushing roller 353 on the kernel and shell mixture on the upper surface of the crushing screen 36 is less than the pressure of crushing the fiber shell, but greater than the pressure of crushing the kernel. The crushing roller 353, which swings on the upper side of the crushing screen 36, only crushes the kernel in the kernel and shell mixture. The kernels with smaller diameter after crushing are screened by the crushing screen 36, while the uncrushed fiber shell is left on the crushing screen 36.

[0038] Based on the aforementioned differences between nut kernels and fibrous shells, and considering that the kernels themselves need to be crushed during oil refining, this implementation utilizes the different ultimate bearing pressures of the kernels and fibrous shells. An elastic crushing roller 353 applies appropriate pressure to the mixture. When the crushing roller 353 crushes the kernels, it breaks them down, reducing their particle diameter. However, when the crushing roller 353 crushes the fibrous shells, the crushing pressure is insufficient to crush them; instead, it rolls over the surface of the fibrous shells, allowing them to retain their original shape and size. The crushed kernels and fibrous shells are of different sizes, thus allowing for smooth sieving by the crushing sieve 36. The sieved kernels then fall into the second crushing mechanism 20 and are thoroughly crushed.

[0039] Because the width of the fixed plate 354 is adapted to the width of a single nut, when it is pressed up from directly below, and is subjected to the pressure of only a single nut or fibrous shell, it ensures the accuracy of its directional crushing of nuts.

[0040] In the previous embodiment: the assembly cover 31 includes a horizontally arranged outer cylinder 311, with side covers 312 fixed on both sides of the outer cylinder 311. A swing roller 33 coaxial with the outer cylinder 311 is rotatably supported between the two side covers 312 through a support frame 313. The crushing screen 36 is assembled on the lower side of the outer cylinder 311. The fixed plate 354 is rotatably connected to the assembly roller 351 through a hanging frame 332 and is assembled below the swing roller 33. One end of the swing roller 33 is connected to a swing plate 331. A motor B34 is provided on one side of the swing plate 331 to drive it to swing. A drive rod 341 is eccentrically connected to the output end of the motor B34. One end of the drive rod 341 is eccentrically rotatably connected to the side surface of the swing plate 331.

[0041] Furthermore, the motor B34 eccentrically drives the drive rod 341, pushing the swing plate 331 to swing along the axis, causing the swing roller 33 to reciprocate. The crushing assembly 35 is mounted below the swing roller 33 via the hanging frame 332. When the swing roller 33 reciprocates, the crushing assembly 35 reciprocates on the upper surface of the crushing screen 36, thereby fully crushing the kernel and shell mixture on the upper surface of the crushing screen 36.

[0042] In the previous embodiment: there is a gap between the lower surface of the crushing roller 353 and the upper surface of the crushing screen 36. The diameter of the screen hole of the crushing screen 36 is greater than the length of the gap and less than the radius of the fiber shell. The length of the gap is less than one-third of the diameter of the kernel.

[0043] Furthermore, in the process of crushing nuts, the smaller the diameter of the crushed particles, the greater their mud-like characteristics. Mud-like structures are prone to adhesion and are not easy to pass through the sieve holes of the crushing sieve 36. Through the above-mentioned spacing design, while ensuring that the nuts are crushed, it is avoided to crush the nuts into fine particles, thereby reducing their mud-like properties. Unmud-like, broken nuts are easier to pass through the crushing sieve 36 and complete the screening.

[0044] In the previous embodiment: A plurality of pins 352 are fixedly mounted circumferentially on the arc surface of the rolling roller 353 for rolling. The pins 352 are inserted into the fiber shell. A shell-removing assembly 37 for removing the fiber shell from the surface of the pins 352 is provided on one side of the rolling roller 353. The shell-removing assembly 37 is fixedly mounted on the hanging frame 332 via a bracket, swings with the roller, and remains suspended on one side of the rolling roller 353. Two shell-removing assemblies 37 are symmetrically arranged on both sides of the rolling roller 353.

[0045] Furthermore, the fiber shell is mainly composed of cellulose, hemicellulose, and lignin, and has a network structure. Its thickness is between 0.5 and 2 mm. When the crushing roller 353 rolls on the kernel and shell mixture, the needle 352 can more easily break the surface structure of the kernel and promote its crushing. On the other hand, it can insert into the fiber. When the crushing roller 353 rolls on the upper surface of the crushing screen 36, the needle 352 can lift the shell and move it to the area of ​​the shelling component 37. The shelling component 37 then removes the shell and collects it on the inner side, thereby reducing the fiber shell content on the crushing screen 36 and preventing the fiber shell from accumulating on the upper side of the crushing screen 36 and affecting subsequent screening.

[0046] The length of the insert 352 is adapted to the thickness of the fiber shell, and barbs can also be designed on the surface of the insert 352 to make the fiber shell inserted on the surface of the insert 352 less likely to fall off.

[0047] It should be noted that dried nuts and kernels have low moisture content and low plasticity. When subjected to external force, the plastic material will break under pressure. Therefore, when nuts are subjected to pressure or when the needle 352 is inserted, they will generally break directly and will not remain firmly on the surface of the needle 352.

[0048] In the previous embodiment: the shell removal assembly 37 includes a shell removal component for removing the fiber shell on the surface of the insert 352, and a receiving component for receiving the fiber shell removed by the shell removal component;

[0049] The shell removal component includes a vent 371. A jet pipe 372 and a stop pin 373 are fixedly mounted on the lower surface of the vent 371 and suspended on one side of the rolling roller 353. The air outlet of the jet pipe 372 is aligned with the surface of the rolling roller 353. One end of the vent 371 is connected to an air pump 38 through an air supply pipe 381. The suspended position of the jet pipe 372 is close to the surface of the rolling roller 353 and is offset from the stop pin 352. The jet pipe 372 is supplied with air by the air pump 38 and sprays high-speed air towards the side of the rolling roller 353.

[0050] The receiving component includes a collection cover 374 located below the stop pin 373. A rubber pad 375 is provided on the side of the collection cover 374 near the crushing roller 353. The upper side of the rubber pad 375 is suspended on one side of the crushing roller 353 by multiple pull ropes 376.

[0051] When the fiber shell inserted on the surface of the pin 352 moves to the position of the stop pin 373, it will be pushed off by the stop pin 373. When the fiber shell inserted on the pin 352 passes the position of the rubber pad 375, it can automatically push the surface of the rubber pad 375 inward. When it moves completely above the rubber pad 375, the high-speed air blown out by the jet pipe 372 can automatically restore the rubber pad 375.

[0052] Furthermore, after the fiber shell inserted by the needle 352 is removed by the deflector 373, it automatically falls into the collection hood 374 and is collected. The high-speed air blown out by the jet pipe 372 can remove the kernels that are inserted on the needle 352 in advance. When the kernels are inserted into the needle 352, the friction between them is small. The blocking effect of the rubber pad 375 and the blowing effect of the jet pipe 372 will promote the kernels to fall off the surface of the needle 352 automatically, preventing the kernels from moving above the rubber pad 375 and falling into the collection hood 374, thus avoiding kernel waste.

[0053] The pull cord 376 is used to pull the upper edge of the rubber pad 375 to prevent the middle part from contacting the surface of the rolling roller 353 and the pin 352.

[0054] In the previous embodiment: the side cover 312 has an outlet 315 on one end of the movement path of the collection cover 374, the outlet 315 has a guide plate 316 for guiding the discharge, the collection cover 374 has a discharge hole that is movably connected to the outlet 315 on one end near the outlet 315, and the jet pipe 372 is inclined at the jet angle toward the discharge hole.

[0055] Furthermore, by using the inclined setting of the jet pipe 372, some of the air blown into the collection hood 374 can push the fiber shell remaining inside the collection hood 374 to move automatically towards the discharge hole, and finally be automatically discharged from the shell outlet 315.

[0056] In the previous embodiment: the upper side of the outer cylinder 311 is provided with a feeding assembly 32 for quantitative feeding. The feeding assembly 32 includes a feeding box 321. The feeding box 321 is rotatably mounted with a feeding roller 323 at the communication position between it and the outer cylinder 311. The surface of the feeding roller 323 is provided with a plurality of feeding grooves 324 circumferentially. One end of the shaft of the feeding roller 323 is connected to a motor A322 that drives it to rotate.

[0057] Furthermore, for raw materials consisting of kernels and shells, the raw materials are first fed into the feeding box 321, and then the motor A322 drives the conveying roller 323 to rotate slowly or intermittently, so as to achieve constant speed and quantitative feeding into the outer cylinder 311, so that the total amount of mixed raw materials in the outer cylinder 311 is kept within a suitable range, and the excessive amount of mixed raw materials in the outer cylinder 311 is avoided, which would reduce the ability of the crushing component 35 to directionally crush the kernels.

[0058] In the previous embodiment: a feeding hopper 314 connected to the second crushing mechanism 20 is provided on the lower side of the outer cylinder 311 and below the crushing screen 36. The second crushing mechanism 20 includes a crushing box 21, a crushing blade 22 rotating inside the crushing box 21, and a discharge port 23 on the lower side of the crushing box 21. The feeding hopper 314 is connected to the crushing box 21.

[0059] Furthermore, the small kernel particles that pass through the crushing screen 36 are fed into the crushing box 21 through the feeding hopper 314, where they are further crushed by the high-speed rotating crushing blades 22 to meet the standards for oil refining.

[0060] Working principle: The raw material of kernel and shell mixture is put into the feeding box 321. The motor A322 drives the feeding roller 323 to rotate slowly or intermittently, feeding the material into the outer cylinder 311 at a constant speed and in a fixed quantity, so that the total amount of mixed raw material in the outer cylinder 311 is kept within a suitable range.

[0061] Restart motor B34 to drive oscillating roller 33 to reciprocate along the shaft. Further, through hanging frame 332 and assembly roller 351, multiple crushing components 35 swing above crushing screen 36. When crushing kernels, crushing roller 353 crushes them, reducing their particle diameter. When crushing fiber shells, the crushing pressure is insufficient to crush the fiber shells, but rolls over the surface of the fiber shells, which retain their original shape and size. The crushed kernels and fiber shells are of different sizes and are smoothly screened by crushing screen 36. The screened kernels fall into the second crushing mechanism 20 and are fully crushed.

[0062] Among them, the surface of the crushing roller 353 is provided with pins 352. When the crushing roller 353 rolls on the kernel and shell mixture, the pins 352 can more easily break the surface structure of the kernel and promote its crushing. On the other hand, they can be inserted into the fiber. When the crushing roller 353 rolls on the upper surface of the crushing screen 36, the pins 352 can lift the shell and move it to the range of the shell unloading component 37. The shell unloading component 37 will then remove the shell and collect it on the inside, thus preventing the fiber shell from accumulating on the upper side of the crushing screen 36 and affecting subsequent screening.

[0063] The fiber shell inserted by the needle 352 is retracted by the stop needle 373 and automatically falls into the collection hood 374 for collection. The high-speed air blown out by the jet pipe 372 can remove the kernels inserted on the needle 352 in advance. The blocking effect of the rubber pad 375 and the blowing effect of the jet pipe 372 will promote the kernels to fall off the surface of the needle 352 automatically, preventing the kernels from moving above the rubber pad 375 and falling into the collection hood 374, thus avoiding kernel waste. At the same time, the inclined setting of the jet pipe 372 allows some of the air blown into the collection hood 374 to push the fiber shells remaining inside the collection hood 374 to move automatically towards the discharge hole, and finally be automatically discharged from the shell outlet 315.

[0064] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A nut kernel and shell crushing device, comprising a machine base (10), characterized in that: It also includes a second crushing mechanism (20) and a first crushing mechanism (30) mounted on the machine base (10). The first crushing mechanism (30) initially crushes the kernels while removing the fibrous shells, and the second crushing mechanism (20) further crushes the initially crushed kernels. The first crushing mechanism (30) includes an assembly cover (31), on the bottom side of which is a crushing screen (36) for screening small kernel particles. On the upper side of the crushing screen (36) is a swinging crushing assembly (35) for crushing only kernels. The crushing assembly (35) includes multiple fixed discs (354) arranged side by side. The fixed discs (354) are fixedly connected in series by assembly rollers (351). The outer side of the fixed discs (354) is connected by multiple circumferentially arranged... The spring (355) is elastically fitted with a crushing roller (353). The pressure of the crushing roller (353) on the kernel and shell mixture on the upper surface of the crushing screen (36) is less than the pressure of crushing the fiber shell and greater than the pressure of crushing the kernel. The crushing roller (353) swinging on the upper side of the crushing screen (36) only crushes the kernel in the kernel and shell mixture. The kernel with a smaller diameter after crushing is screened by the crushing screen (36), while the uncrushed fiber shell is left on the crushing screen (36). The rolling roller (353) is circumferentially fixed with multiple pins (352) for rolling. The pins (352) are inserted into the fiber shell. The rolling roller (353) is provided with a shell removal assembly (37) on one side for removing the fiber shell on the surface of the pins (352). The shell removal assembly (37) includes a shell removal component for removing the fiber shell from the surface of the insert (352) and a receiving component for receiving the fiber shell removed by the shell removal component; The shell removal component includes a vent hood (371), on the lower surface of which a jet pipe (372) and a stop pin (373) are fixedly mounted and suspended on one side of the rolling roller (353). The air outlet of the jet pipe (372) is aligned with the surface of the rolling roller (353). One end of the vent hood (371) is connected to an air pump (38) through an air supply pipe (381). The receiving component includes a collection cover (374) located below the stop pin (373). The collection cover (374) has a rubber pad (375) on the side near the rolling roller (353). The upper side of the rubber pad (375) is suspended on the side of the rolling roller (353) by multiple pull ropes (376).

2. The nut kernel and shell crushing device according to claim 1, characterized in that: The assembly cover (31) includes a horizontally arranged outer cylinder (311), with side covers (312) fixed on both sides of the outer cylinder (311). A swing roller (33) coaxial with the outer cylinder (311) is rotatably supported between the two side covers (312) by a support frame (313). The crushing screen (36) is assembled on the lower side of the outer cylinder (311). The fixed plate (354) is rotatably connected to the assembly roller (351) through a hanging frame (332) and is assembled below the swing roller (33). One end of the swing roller (33) is connected to a swing plate (331). A motor B (34) that drives the swing plate (331) to swing is provided on one side of the swing plate (331). A drive rod (341) is eccentrically connected to the output end of the motor B (34). One end of the drive rod (341) is eccentrically rotatably connected to the side surface of the swing plate (331).

3. The nut kernel and shell crushing device according to claim 1, characterized in that: The lower surface of the crushing roller (353) and the upper surface of the crushing screen (36) are provided with a gap. The diameter of the screen hole of the crushing screen (36) is greater than the length of the gap and less than the radius of the fiber shell. The length of the gap is less than one-third of the diameter of the kernel.

4. The nut kernel and shell crushing device according to claim 2, characterized in that: The side cover (312) has an outlet (315) on one end of the movement path of the collection cover (374). The outlet (315) has a guide plate (316) for guiding the discharge. The collection cover (374) has a discharge hole that is movably connected to the outlet (315) at one end near the outlet (315). The jet pipe (372) has an air jet angle that is inclined toward the discharge hole.

5. The nut kernel and shell crushing device according to claim 2, characterized in that: The upper side of the outer cylinder (311) is provided with a feeding assembly (32) for quantitative feeding. The feeding assembly (32) includes a feeding box (321). A feeding roller (323) is rotatably mounted at the communication position between the feeding box (321) and the outer cylinder (311). A plurality of feeding grooves (324) are circumferentially opened on the surface of the feeding roller (323). One end of the shaft of the feeding roller (323) is connected to a motor A (322) that drives it to rotate.

6. The nut kernel and shell crushing device according to claim 2, characterized in that: The outer cylinder (311) is provided with a feeding hopper (314) connected to the second crushing mechanism (20) below the crushing screen (36). The second crushing mechanism (20) includes a crushing box (21), a crushing blade (22) rotating inside the crushing box (21), and a discharge port (23) on the lower side of the crushing box (21). The feeding hopper (314) is connected to the crushing box (21).

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