Walnut kernel breaking and picking integrated machine
Through the coordinated design of the feeding auger and bevel gear transmission, combined with the cylinder-driven rubber pressing block, the automatic feeding and shelling of the walnut shelling and kernel extraction equipment has been realized, solving the problem of time-consuming and labor-intensive manual feeding, and improving production efficiency and the integrity of walnut kernels.
Patent Information
- Application Number
- CN202521978462.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-04
- Estimated Expiration
- 2035-09-15
AI Technical Summary
In existing walnut shelling and kernel extraction equipment, the feeding process is time-consuming and labor-intensive, with low operating efficiency and unstable feeding rate, which affects overall production efficiency and large-scale processing.
The system employs a multi-component collaborative design, including a conveying auger, bevel gear transmission, and cylinder-driven rubber blocks, to achieve automated feeding and shell breaking processes. The feeding rate is controlled by motor speed regulation to ensure stable conveying and shell breaking.
It improves feeding efficiency and stability, reduces labor costs, enhances the efficiency of the shelling process and the integrity of walnut kernels, and meets the needs of large-scale production.
Smart Images

Figure CN224584126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of walnut processing technology, and in particular to an integrated machine for shelling and kernel extraction of walnuts. Background Technology
[0002] The walnut shelling and kernel extraction machine is an automated device that can crack and extract the kernels from walnuts. It employs various shelling principles, such as gentle cracking (simulating manual shell rubbing via a conveyor belt) and mechanical extrusion. After cracking, the kernels are separated using the density difference between the shell and the kernel, aided by airflow and sieving. This highly automated equipment significantly improves production efficiency and reduces labor costs.
[0003] Therefore, we proposed a walnut shelling and kernel extraction machine to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide an integrated machine for shelling and kernel extraction of walnuts, which solves the obvious problems in the feeding process during the shelling and kernel extraction of walnuts in the existing technology: on the one hand, manual feeding is time-consuming and laborious, requiring each walnut to be placed precisely one by one, resulting in low operating efficiency; on the other hand, the feeding rate is difficult to maintain a stable pace, and the fluctuating pace can easily lead to poor connection between the subsequent shelling and kernel extraction processes, further affecting the overall production efficiency and restricting the process of large-scale processing.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A walnut shelling and kernel extraction machine includes a processing table, a support frame fixedly installed on one side of the processing table, and multiple first feeding components fixedly installed on the top of the processing table via support rods. Second feeding components are fixedly installed between the inner walls of the front and rear sides of the support frame.
[0007] The first feeding assembly includes a feeding pipe, a feeding auger, and a feeding pipe. The feeding pipe is fixedly installed on the top of multiple support rods, and a feeding auger is rotatably connected between the inner walls on both sides of the feeding pipe. An inclined feeding pipe is fixedly installed at one bottom end of the feeding pipe.
[0008] The second feeding assembly includes a rotating cylinder and a placement cylinder. The rotating cylinder is rotatably disposed between the inner walls of the front and rear sides of the support frame, and several placement cylinders are fixedly installed on the outside of the rotating cylinder. A second motor is fixedly installed on the front side of the support frame, and the output end of the second motor is fixedly connected to the shaft of the rotating cylinder. The top opening of each placement cylinder corresponds to a designated feeding pipe.
[0009] Preferably, each of the conveying pipes is fixedly installed with a feeding pipe at the top, the feeding pipe being located at the other end of the top of the conveying pipe, and the feeding pipe being connected to the inside of the conveying pipe.
[0010] Preferably, a fixing plate is fixedly installed on the other side of the plurality of conveying pipes, and the other end of each conveying auger shaft extends through the conveying pipe to the other side of the fixing plate, and a first bevel gear is fixedly installed on the other end of each conveying auger shaft.
[0011] Preferably, a first motor is fixedly installed on the front side of the processing table, and a rotating shaft is fixedly connected to the output end of the first motor. The rear end of the rotating shaft is rotatably connected to the inner wall of the rear side of the processing table.
[0012] Preferably, a plurality of second bevel gears are fixedly mounted in an equidistant array on the outside of the rotating shaft, and each second bevel gear is meshed with the adjacent first bevel gear at the connection point.
[0013] Preferably, a plurality of cylinders are fixedly installed on the top of the support frame, and a drive rod is fixedly connected to the output end of each cylinder, and a rubber pressure block is fixedly installed on the end of each drive rod away from the cylinder, and the rubber pressure block is located on the top of the corresponding placement cylinder.
[0014] This utility model has at least the following beneficial effects:
[0015] The collaborative design of the "first feeding component + second feeding component" replaces the manual single-piece placement operation. The funnel-shaped feeding pipe supports batch feeding, and the feeding auger combined with the bevel gear transmission structure realizes multi-channel synchronous and stable feeding. This not only eliminates the tedious steps of manual placement one by one, reducing labor costs, but also allows for precise control of the feeding rate by adjusting the speed of the first motor, avoiding process connection problems caused by inconsistent speeds, and significantly improving feeding efficiency and stability.
[0016] This utility model also has the following beneficial effects:
[0017] The shell-breaking process balances efficiency and quality. The combination of a cylinder and rubber pressure block at the top of the support frame, along with a rotating cylinder and placement cylinder driven by a second motor, forms an automated process of "precise receiving and synchronous shell breaking." The curved structure and suitable hardness (Shore hardness 50-60) of the rubber pressure block ensures that the walnut shells are crushed while minimizing damage to the walnut kernels, improving the integrity and quality of the finished kernels. Furthermore, the corresponding arrangement of multiple cylinders and placement cylinders allows for the simultaneous shell breaking of multiple walnuts, further enhancing overall processing efficiency and meeting the needs of large-scale production. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a three-dimensional side view of the overall structure of this utility model;
[0021] Figure 3 This is another perspective view of the overall structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the internal cross-section of the overall structure of this utility model.
[0023] In the diagram: 1. Processing table; 2. Support frame; 3. Feeding pipe; 4. Feeding auger; 5. Discharge pipe; 6. Rubber block; 7. Rotating cylinder; 8. Placement cylinder; 9. Second motor; 10. Feeding pipe; 11. Fixing plate; 12. First bevel gear; 13. First motor; 14. Rotating shaft; 15. Second bevel gear; 16. Cylinder; 17. Drive rod. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0025] Reference Figure 1-4 The walnut shelling and kernel extraction machine includes a processing table 1, a support frame 2 fixedly installed on one side of the processing table 1, and multiple first feeding components fixedly installed on the top of the processing table 1 by a support rod. Second feeding components are fixedly installed between the inner walls of the front and rear sides of the support frame 2.
[0026] The first feeding assembly includes a feeding pipe 3, a feeding auger 4, and a feeding pipe 5. The feeding pipe 3 is fixedly installed on the top of multiple support rods, and the feeding auger 4 is rotatably connected between the inner walls on both sides of the feeding pipe 3. An inclined feeding pipe 5 is fixedly installed at one bottom end of the feeding pipe 3.
[0027] The second feeding assembly includes a rotating cylinder 7 and a placement cylinder 8. The rotating cylinder 7 is rotatably disposed between the inner walls of the front and rear sides of the support frame 2, and several placement cylinders 8 are fixedly installed on the outside of the rotating cylinder 7. A second motor 9 is fixedly installed on the front side of the support frame 2, and the output end of the second motor 9 is fixedly connected to the shaft of the rotating cylinder 7. The top opening of each placement cylinder 8 corresponds to a designated feeding pipe 5.
[0028] Furthermore, each conveying pipe 3 is fixedly installed with a feeding pipe 10 at its top. The feeding pipe 10 is located at the other end of the top of the conveying pipe 3 and is connected to the inside of the conveying pipe 3. Specifically, the larger opening of the feeding pipe 10 faces upward to facilitate manual batch feeding or docking with an automatic feeding device, while the smaller opening precisely docks with the conveying pipe 3 to prevent walnuts from spilling during feeding. The blade spacing of the conveying auger 4 is adapted to the average particle size of the walnuts. When rotating, it can smoothly push the walnuts falling into the feeding pipe 10 to the lower feeding pipe 5 to prevent walnuts from accumulating and blocking, while ensuring single or orderly conveying, matching the receiving rhythm of the lower placement cylinder 8.
[0029] Furthermore, a fixing plate 11 is fixedly installed on the other side of multiple conveying pipes 3. The other end of the shaft of each conveying auger 4 extends through the conveying pipe 3 to the other side of the fixing plate 11, and a first bevel gear 12 is fixedly installed on the other end of the shaft of each conveying auger 4. Specifically, the fixing plate 11 is made of metal and is rigidly connected to the conveying pipe 3 by bolts, which plays a supporting and positioning role for the shaft of the conveying auger 4, preventing the auger from shifting due to force shaking when rotating. The number of teeth and the module of the first bevel gear 12 are the same, and the edge of the gear is polished to reduce the frictional resistance during subsequent meshing.
[0030] Furthermore, a first motor 13 is fixedly installed on the front side of the processing table 1, and a rotating shaft 14 is fixedly connected to the output end of the first motor 13. The rear end of the rotating shaft 14 is rotatably connected to the inner wall of the rear side of the processing table 1. Specifically, the first motor 13 is a geared motor with a rated speed adapted to the material feeding requirements. The speed can be adjusted by an external controller to control the feeding rate. The rotating shaft 14 is made of high-strength alloy material and is connected to the inner wall of the processing table 1 through a deep groove ball bearing. Lubricating grease is added to the bearing to reduce the wear of the rotating shaft 14 during rotation and ensure long-term stable operation.
[0031] Furthermore, multiple second bevel gears 15 are fixedly installed in an equidistant array on the outside of the rotating shaft 14. Each second bevel gear 15 is meshed with the adjacent first bevel gear 12 at the connection point. Specifically, gear oil is periodically added to the meshing points of all first bevel gears 12 and second bevel gears 15 to improve transmission efficiency and ensure that the rotation speed of multiple conveying augers 4 is consistent, so as to achieve synchronous and stable feeding of multiple channels.
[0032] Furthermore, multiple cylinders 16 are fixedly installed on the top of the support frame 2. Each cylinder 16 has a drive rod 17 fixedly connected to its output end, and a rubber pressing block 6 is fixedly installed on the end of each drive rod 17 away from the cylinder 16. The rubber pressing block 6 is located on the top of the corresponding placement cylinder 8. Specifically, the cylinder 16 is a small pneumatic cylinder 16, which is connected to an external air pump through an air pipe and can act synchronously according to the rotation position signal of the placement cylinder 8. The rubber pressing block 6 is arc-shaped, and its curvature fits the inner wall of the placement cylinder 8. The rubber hardness is moderate (Shore hardness 50-60 degrees), which can ensure sufficient pressure to crush the walnut shells while avoiding damage to the walnut kernels. The drive rod 17 is made of stainless steel, and its length is precisely calculated to ensure that when the cylinder 16 is fully extended, the rubber pressing block 6 just contacts the walnut inside the placement cylinder 8 and completes the shell breaking.
[0033] In summary, this walnut shelling and kernel extraction machine achieves automated processing through the collaborative operation of multiple components, featuring a compact overall structure and clear division of labor. During the feeding stage, the first motor 13 drives the rotating shaft 14 via bevel gear transmission, causing multiple sets of conveying augers 4 to operate synchronously. Combined with the funnel-shaped feeding pipe 10 and the matching auger blades, this ensures stable and orderly conveying of walnuts. In the receiving and shelling stage, the second motor 9 drives the rotating cylinder 7 to rotate, allowing the placement cylinder 8 to precisely align with the feeding pipe 5 to receive the walnuts. Subsequently, the cylinder 16 drives the drive rod 17 with the rubber pressure block 6 to press down, completing the shelling process while protecting the walnut kernels. The entire machine solves the problems of time-consuming and unstable rates associated with traditional manual feeding. It improves efficiency through multi-channel parallel processing, and the highly adaptable structure and stable operation of each component meet the production needs of large-scale walnut shelling and kernel extraction.
[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A walnut shelling and kernel picking integrated machine, comprising a processing table (1), characterized in that, A support frame (2) is fixedly installed on one side of the processing table (1), and a plurality of first feeding components are fixedly installed on the top of the processing table (1) by a support rod. A second feeding component is fixedly installed between the inner walls of the front and rear sides of the support frame (2). The first feeding assembly includes a feeding pipe (3), a feeding auger (4), and a feeding pipe (5). The feeding pipe (3) is fixedly installed on the top of multiple support rods, and the feeding auger (4) is rotatably connected between the inner walls on both sides of the feeding pipe (3). An inclined feeding pipe (5) is fixedly installed at one bottom end of the feeding pipe (3). The second feeding assembly includes a rotating cylinder (7) and a placement cylinder (8). The rotating cylinder (7) is rotatably disposed between the inner walls of the front and rear sides of the support frame (2), and several placement cylinders (8) are fixedly installed on the outside of the rotating cylinder (7). A second motor (9) is fixedly installed on the front side of the support frame (2), and the output end of the second motor (9) is fixedly connected to the axis of the rotating cylinder (7). The top opening of each placement cylinder (8) corresponds to a designated feeding pipe (5).
2. The walnut shelling and kernelting all-in-one machine according to claim 1, characterized in that, Each of the conveying pipes (3) is fixedly equipped with a feeding pipe (10) at the top. The feeding pipe (10) is located at the other end of the top of the conveying pipe (3) and is connected to the inside of the conveying pipe (3).
3. The walnut shelling and sorting machine of claim 1, wherein, A fixing plate (11) is fixedly installed on the other side of each of the multiple conveying pipes (3), and the other end of the shaft of each of the conveying augers (4) extends through the conveying pipe (3) to the other side of the fixing plate (11), and a first bevel gear (12) is fixedly installed on the other end of the shaft of each of the conveying augers (4).
4. The walnut shelling and sorting machine of claim 1, wherein, A first motor (13) is fixedly installed on the front side of the processing table (1), and a rotating shaft (14) is fixedly connected to the output end of the first motor (13). The rear end of the rotating shaft (14) is rotatably connected to the inner wall of the rear side of the processing table (1).
5. The walnut shelling and sorting machine according to claim 4, characterized in that, Multiple second bevel gears (15) are fixedly installed in an equidistant array on the outside of the rotating shaft (14), and each second bevel gear (15) is meshed with the adjacent first bevel gear (12) at the connection point.
6. The walnut shelling and sorting machine of claim 1, wherein, The support frame (2) is fixedly mounted with multiple cylinders (16) on the top. Each cylinder (16) is fixedly connected to a drive rod (17) at its output end. Each drive rod (17) is fixedly mounted with a rubber block (6) at the end away from the cylinder (16). The rubber block (6) is located on the top of the corresponding placement cylinder (8).