High yield shelling roller set for walnut shelling machine

Abstract

The application discloses a high-yield shelling roller group of a walnut shelling machine, which comprises a rack, a material receiving groove fixed on the rack, two parallel rubber rollers and groove rollers rotatably arranged on the rack, wherein the rubber rollers and the groove rollers are horizontally arranged, the rubber rollers are arranged relatively higher than the groove rollers, the groove rollers are provided with a plurality of annular grooves in the circumferential direction, the rubber rollers and the groove rollers are drivingly connected with a shelling motor fixed on the rack and rotate in opposite directions, the bottom of the material receiving groove is provided with a long strip-shaped discharge port, and the discharge port of the material receiving groove is located directly above the groove rollers. According to the application, the rubber rollers are arranged relatively higher than the groove rollers, the discharge port of the material receiving groove is located directly above the groove rollers, the rubber rollers and the groove rollers rotate relatively, after the walnut enters the material receiving groove, the walnut rolls into the annular grooves of the groove rollers one by one and is driven by the groove rollers to move close to the rubber rollers, the walnut rolls and tumbles in the process of moving close to the rubber rollers, the walnut bellies of most walnuts are directed to the groove bottoms of the annular grooves and the roller surfaces of the rubber rollers, and the walnuts are beneficial to complete shelling after being extruded, and the yield of 1 / 2 walnut kernels is higher.

Description

Technical Field

[0001] This invention relates to a high-yield shelling roller assembly for a walnut shelling machine, belonging to the field of agricultural machinery. Background Technology

[0002] Walnuts are plants of the Juglandaceae family. Walnut kernels are rich in protein, fat and carbohydrates, as well as a variety of trace elements and minerals such as calcium, phosphorus and iron, which are essential for the human body, and a variety of vitamins such as carotene and riboflavin. They have the effects of benefiting the heart, enhancing brain function and improving digestive system function.

[0003] With the development of the walnut processing industry, shelling and kernel extraction has become a routine method in walnut processing. Therefore, walnut shelling machines have become an indispensable piece of equipment in walnut processing. With the continuous development of walnut shelling machines, they have been widely used due to their unique advantages. Currently, the most widely used walnut shelling methods include impact, crushing, and squeezing.

[0004] Among them, the extrusion method for shell breaking relies on a pair of cylindrical rollers of the same diameter rotating in opposite directions at equal speeds. Adjusting the gap to a suitable distance allows the walnuts to be squeezed and cracked as they pass through the gap. For example, Chinese patent ZL202020702733.0 discloses a roller-extrusion walnut shell breaking machine, consisting of a grading mechanism, a shell breaking mechanism, a drive mechanism, and a discharge mechanism. The shell breaking mechanism uses roller extrusion technology. Graded walnuts enter between the corresponding rollers, are crushed by the rollers, and then discharged through a discharge box. While this extrusion method improves the production efficiency of walnut shell breaking, it has certain problems: because walnuts have a "round belly" shape, and the walnut shell is formed by two hemispherical shells joined together, the two rollers or roller sleeves squeeze the two hemispherical shells respectively. The "belly" of the walnut shell is separated at the junction of the two hemispherical shells, and the walnut inside the hemispherical shell is squeezed and loosened and separated from the hemispherical shell. The walnut kernel is separated from the hemispherical shell as a whole, which ensures the integrity of the walnut and guarantees the yield. However, conventional extrusion walnut shelling machines use smooth round rollers or roller shafts with anti-slip grooves along the length (such as the roller sleeve in ZL202020702733.0). After the walnut falls between the roller shaft or roller sleeve after grading, various parts of the walnut may come into contact with the surface of the roller sleeve, resulting in a high breakage rate of the walnut kernel after shelling, which affects the yield. Summary of the Invention

[0005] To solve the above technical problems, the purpose of this invention is to provide a walnut shelling machine shelling roller assembly with high yield (high integrity of walnuts after shelling).

[0006] This invention is implemented by the following technical solution: a high-yield shelling roller assembly for a walnut shelling machine, characterized in that it includes a frame, a receiving trough fixedly mounted on the frame, and two parallel rubber rollers and grooved rollers rotatably mounted on the frame. The rubber rollers and grooved rollers are horizontally arranged, with the rubber rollers positioned relatively higher than the grooved rollers. The grooved rollers have several annular grooves on their circumference. The rubber rollers and grooved rollers are driven by a shelling motor fixedly mounted on the frame, rotating in opposite directions.

[0007] The bottom of the receiving trough is provided with a long strip-shaped discharge port, which is located directly above the trough roller.

[0008] Preferably, a baffle is provided at the bottom of the trough wall near the rubber roller on the side of the material receiving trough outlet along the length of the outlet.

[0009] Preferably, the curtain is a rubber curtain.

[0010] Advantages of this invention:

[0011] 1. In this invention, the rubber roller of the shell-breaking roller group is positioned higher than the groove roller, and the discharge port of the receiving trough is located directly above the groove roller. The rubber roller and the groove roller rotate relative to each other. After the walnuts enter the receiving trough, they roll into the annular groove of the groove roller one by one and are driven by the groove roller to approach the rubber roller. During the approaching process, they tumble. Most of the walnuts have their bellies facing the bottom of the annular groove and the roller surface of the rubber roller. After being squeezed, they are more likely to be completely shelled, and the yield of 1 / 2 walnut kernels is higher.

[0012] 2. In this invention, a baffle is provided at the bottom of the trough wall near the rubber roller on the side of the discharge port of the receiving trough along the length of the discharge port. This baffle acts as a buffer for the walnuts and prevents them from rushing out of the outlet directly and entering the gap between the trough roller and the rubber roller without adjusting their position, thus affecting the yield of 1 / 2 walnut kernels. Attached image description:

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a perspective view of the walnut shelling and sorting machine of Example 1;

[0015] Figure 2 for Figure 1 Another perspective 3D view;

[0016] Figure 3This is an assembly diagram of the drum sorter and the shell-breaking roller group of the walnut shell-breaking sorter in Example 1;

[0017] Figure 4 yes Figure 3 A sectional view;

[0018] Figure 5 This is a schematic diagram of the receiving trough of the walnut shelling and sorting machine in Example 1;

[0019] Figure 6 This is a schematic diagram of the walnut shelling and sorting machine in Example 1.

[0020] In the diagram: 1. Frame; 2. Elevator; 3. Drum grading screen; 4. Grading motor; 5. Shell-breaking roller assembly; 5.1. Rubber roller; 5.2. Grooved roller; 5.3. Annular trough; 5.4. Shell-breaking motor; 5.5. Receiving trough; 5.6. Rubber baffle; 6. Sorting screen; 7. Shell-kernel separation device; 7.1. Elevating pipe; 7.2. Cyclone separator; 7.3. Walnut shell outlet; 7.4. Walnut powder outlet; 7.5. Walnut outlet; 7.6. Walnut kernel outlet; 8. Anti-clogging roller; 9. Swinging disc; 9.1. Swinging cylinder; 9.2. Rotating shaft; 9.3. Fan blade; 9.4. Separation motor; 10. Feed conveyor; 11. Return conveyor. Detailed implementation method:

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.

[0022] Example 1

[0023] The shell-breaking roller assembly of this invention is installed in a walnut shell-breaking machine. The overall structure includes a frame 1 and a lifting machine 2, a drum grading screen 3, three shell-breaking roller assemblies 5, a sorting screen 6, and a shell-kernel separation device 7, all mounted on the frame 1. The outlet of the lifting machine 2 is located at the inlet of the drum grading screen 3. The screen openings of the drum grading screen 3 increase in size from one end near the lifting machine 2 to the other. Several receiving troughs 5.5 are sequentially arranged along the length of the lower part of the drum grading screen 3. Each receiving trough 5.5 has a bottom outlet below it. There is a shell-breaking roller assembly 5, which includes two parallel rubber rollers 5.1 and grooved rollers 5.2. The grooved rollers 5.2 have several annular grooves 5.3 on their circumference. The rubber rollers 5.1 and grooved rollers 5.2 are driven and connected to a shell-breaking motor 5.4, and rotate in opposite directions. The length direction of the rubber rollers 5.1 and grooved rollers 5.2 is perpendicular to the length direction of the drum grading screen 3. From one end near the elevator 2 to the other end, the distance between the two rubber rollers 5.1 and grooved rollers 5.2 of the shell-breaking roller assembly 5 gradually increases.

[0024] The sorting screen 6 is located at the bottom of the shell breaking roller group 5. The sorting screen 6 is a multi-stage sorting screen 6, and the screen mesh of the sorting screen 6 decreases in size from top to bottom.

[0025] Except for the top screen, the oversize outlets of the remaining screens of the sorting screen 6 are all connected to a shell and kernel separation device 7. The shell and kernel separation device 7 includes a lifting pipe 7.1, with a feed inlet on the side of the lifting pipe 7.1. An adjustable air vent is provided on the pipe wall above the feed inlet to adjust the airflow. The top of the lifting pipe 7.1 is connected to a cyclone separator 7.2. The bottom outlet of the cyclone separator 7.2 is the walnut shell outlet 7.3. The feed inlet of the lifting pipe 7.1 is located at the outlet of the corresponding screen of the sorting screen 6. The undersize outlet of the bottom screen of the sorting screen 6 is the walnut powder outlet 7.4. From top to bottom, the bottom outlet of the lifting pipe 7.1 corresponding to the second screen of the sorting screen 6 is the walnut outlet 7.5, and the bottom outlet of the remaining lifting pipes 7.1 is the walnut kernel outlet 7.6. The walnut outlet 7.5 is connected to the elevator 2 via a conveyor.

[0026] This embodiment also includes a swivel disc 9, which includes a vertically arranged swivel cylinder 9.1 with openings at the top and bottom. A rotating shaft 9.2 is vertically arranged inside the swivel cylinder 9.1, and a fan blade 9.3 is provided on the rotating shaft 9.2. The rotating shaft 9.2 is driven and connected to a separation motor 9.4. The outlet of the uppermost screen of the sorting screen 6 is located at the upper part of the opening of the swivel cylinder 9.1, and the lower opening of the swivel cylinder 9.1 is located at the upper part of the second screen of the sorting screen 6.

[0027] In this embodiment, the conveyor includes a feeding conveyor 10 and a return conveyor 11. The unloading end of the feeding conveyor 10 is located above the feed inlet of the elevator 2, and the return conveyor 11 is located below the walnut outlet 7.5. The unloading end of the return conveyor 11 is located above the feeding conveyor 10.

[0028] The drum grading screen 3 is driven and connected to the grading motor 4; the drum grading screen 3 is open at both ends, the drum grading screen 3 is set at an angle, the screen of the drum grading screen 3 is provided with circular screen holes, and the screen holes of the drum grading screen 3 gradually increase in size from the higher end to the other end; the outlet of the elevator 2 is located in the opening at the higher end of the drum grading screen 3.

[0029] To prevent walnuts from getting stuck in the screen holes of the drum grading screen 3 and causing blockage, an anti-blocking roller 8 is provided on the side of the screen of the drum grading screen 3, parallel to the drum grading screen 3. The anti-blocking roller 8 is a soft rubber roller, and the roller surface of the anti-blocking roller 8 is in contact with the screen surface of the drum grading screen 3.

[0030] In this embodiment, the bottom of the receiving trough 5.5 is provided with a long strip-shaped discharge port along the length direction of the groove roller 5.2, and the width of the discharge port of the receiving trough 5.5 is equivalent to the aperture of the corresponding screen hole above it; the rubber roller 5.1 is arranged relatively higher than the groove roller 5.2, and the discharge port of the receiving trough 5.5 is located directly above the groove roller 5.2. A rubber baffle 5.6 is provided at the bottom of the trough wall near the rubber roller 5.1 along the length direction of the discharge port.

[0031] Instructions for use

[0032] First, the walnuts are placed on the feeding conveyor 10. The walnuts are fed into the drum grading screen 3 by the feeding conveyor 10 and the elevator 2. Small walnuts fall through the screen holes first, and large walnuts move forward along the drum grading screen 3. Walnuts matching the size of the screen holes fall in sequence. Finally, the large walnuts fall from the end opening of the drum grading screen 3. Small, medium, and large walnuts enter the corresponding receiving troughs 5.5 respectively. From the discharge port of the receiving trough 5.5, they roll one by one into the annular groove 5.3 of the groove roller 5.2 and are driven by the groove roller 5.2 to approach the rubber roller 5.1. During the approach, they tumble, with most of the walnuts' bellies facing the bottom of the annular groove 5.3 and the roller surface of the rubber roller 5.1. The rubber curtain 5.6 acts as a buffer. After the walnuts are squeezed and cracked between the groove roller 5.2 and the rubber roller 5.1, the walnut shells, kernels, unopened walnuts, and opened but shelled walnuts are separated. Walnuts with unseparated kernels enter the top screen of sorting screen 6. After vibrating screening, unopened walnuts and those with open kernels but not separated from the shell enter the swivel disc 9 from the oversize outlet for secondary shell breaking and kernel separation, and then fall into the second screen. Most of the remaining walnut shells, kernels, and a small portion of unopened and open kernels fall directly into the second screen through the screen holes of the first screen. After secondary screening, the remaining unopened walnuts, open kernels, and a small portion of walnut shells on the oversize enter the corresponding lifting pipe 7.1 from the oversize outlet. Under the action of gravity, the remaining unopened and open kernels are discharged from the walnut outlet 7.5 and fall into the return conveyor 11 for final return and shell breaking. The walnut shells rise from the lifting pipe 7.1 and are finally discharged from the cyclone separator 7.2.

[0033] The material passing through the second screen falls onto the third screen for further separation. Half of the walnut kernel and the larger walnut shells enter the corresponding lifting pipe 7.1 from the oversize outlet. Under the influence of gravity, half of the walnut kernel falls from the walnut kernel outlet 7.6 at the bottom of the lifting pipe 7.1, resulting in half of the walnut kernel. The walnut shells rise from the lifting pipe 7.1 and are finally discharged from the cyclone separator 7.2.

[0034] The material passing through the third screen falls onto the fourth screen for further separation. Walnut pieces and smaller walnut shells enter the corresponding lifting pipe 7.1 from the oversize outlet. Under the influence of gravity, the walnut pieces fall from the walnut kernel outlet 7.6 at the bottom of the lifting pipe 7.1, resulting in walnut pieces. The walnut shells rise from the lifting pipe 7.1 and are eventually discharged from the cyclone separator 7.2.

[0035] The material passing through the fourth sieve is discharged from the walnut powder outlet 7.4, resulting in a mixture of walnut powder and small walnut shell particles;

[0036] In addition, light impurities (such as the inner shell of the walnut) entering the riser tube 7.1 are removed, so the product obtained is a clean 1 / 2 walnut kernel or walnut fragments, which does not require further sorting.

[0037] Example 2

[0038] The difference between this embodiment and Embodiment 1 is that the shell-breaking roller group uses two smooth rubber rollers, which are also installed in the walnut shell-breaking machine. The overall structure includes a frame 1 and an elevator 2, a drum grading screen 3, three shell-breaking roller groups 5, a sorting screen 6, and a shell-kernel separation device 7, all mounted on the frame 1. The outlet of the elevator 2 is located at the inlet of the drum grading screen 3. The screen holes of the drum grading screen 3 increase in size from one end near the elevator 2 to the other. The lower part of the drum grading screen 3 is provided with several receiving troughs 5.5 along its length. Each receiving trough 5.5 has a shell-breaking roller group 5 below its bottom outlet. The shell-breaking roller group 5 includes two parallel rubber rollers 5.1. The rubber rollers 5.1 are driven and connected to the shell-breaking motor 5.4 and rotate in opposite directions. The length direction of the rubber rollers 5.1 is perpendicular to the length direction of the drum grading screen 3. The distance between the two rubber rollers 5.1 of the shell-breaking roller group 5 gradually increases from one end near the elevator 2 to the other.

[0039] The sorting screen 6 is located at the bottom of the shell breaking roller group 5. The sorting screen 6 is a multi-stage sorting screen 6, and the screen mesh of the sorting screen 6 decreases in size from top to bottom.

[0040] Except for the top screen, the oversize outlets of the remaining screens of the sorting screen 6 are all connected to a shell and kernel separation device 7. The shell and kernel separation device 7 includes a lifting pipe 7.1, with a feed inlet on the side of the lifting pipe 7.1. An adjustable air vent is provided on the pipe wall above the feed inlet to adjust the airflow. The top of the lifting pipe 7.1 is connected to a cyclone separator 7.2. The bottom outlet of the cyclone separator 7.2 is the walnut shell outlet 7.3. The feed inlet of the lifting pipe 7.1 is located at the outlet of the corresponding screen of the sorting screen 6. The undersize outlet of the bottom screen of the sorting screen 6 is the walnut powder outlet 7.4. From top to bottom, the bottom outlet of the lifting pipe 7.1 corresponding to the second screen of the sorting screen 6 is the walnut outlet 7.5, and the bottom outlet of the remaining lifting pipes 7.1 is the walnut kernel outlet 7.6. The walnut outlet 7.5 is connected to the elevator 2 via a conveyor.

[0041] This embodiment also includes a swivel disc 9, which includes a vertically arranged swivel cylinder 9.1 with openings at the top and bottom. A rotating shaft 9.2 is vertically arranged inside the swivel cylinder 9.1, and a fan blade 9.3 is provided on the rotating shaft 9.2. The rotating shaft 9.2 is driven and connected to a separation motor 9.4. The outlet of the uppermost screen of the sorting screen 6 is located at the upper part of the opening of the swivel cylinder 9.1, and the lower opening of the swivel cylinder 9.1 is located at the upper part of the second screen of the sorting screen 6.

[0042] In this embodiment, the conveyor includes a feeding conveyor 10 and a return conveyor 11. The unloading end of the feeding conveyor 10 is located above the feed inlet of the elevator 2, and the return conveyor 11 is located below the walnut outlet 7.5. The unloading end of the return conveyor 11 is located above the feeding conveyor 10.

[0043] The drum grading screen 3 is driven and connected to the grading motor 4; the drum grading screen 3 is open at both ends, the drum grading screen 3 is set at an angle, the screen of the drum grading screen 3 is provided with circular screen holes, and the screen holes of the drum grading screen 3 gradually increase in size from the higher end to the other end; the outlet of the elevator 2 is located in the opening at the higher end of the drum grading screen 3.

[0044] To prevent walnuts from getting stuck in the screen holes of the drum grading screen 3 and causing blockage, an anti-blocking roller 8 is provided on the side of the screen of the drum grading screen 3, parallel to the drum grading screen 3. The anti-blocking roller 8 is a soft rubber roller, and the roller surface of the anti-blocking roller 8 is in contact with the screen surface of the drum grading screen 3.

[0045] Walnut shelling and sorting machines of Examples 1 and 2 were used for walnut shelling operations. Each shelling and sorting machine was fed 8 kg of material at the same feeding speed. The weights of the products collected at the walnut outlet, walnut kernel outlet, and walnut powder outlet are listed in Table 1.

[0046] Example 1 8 2.5 2.8 0.2 Example 2 8 1.4 3.5 0.2

[0047] As shown in Table 1, the half-walnut product obtained in Example 1 was 2.5 kg, accounting for 31.3% of the total walnut raw material input, while the half-walnut product obtained in Comparative Example 2 was only 1.4 kg, accounting for 17.5% of the total walnut input. In contrast, the walnut kernels and walnut powder obtained in Example 1 were 2.8 kg and 0.2 kg, respectively, accounting for 35% and 2.5% of the total walnut input; and the walnut kernels and walnut powder obtained in Example 2 were 3.5 kg and 0.2 kg, respectively, accounting for 43.8% and 2.5% of the total walnut input.

[0048] Therefore, it can be seen that the shelling unit of Example 1 has a higher yield (the proportion of 1 / 2 walnut kernels) than the shelling roller unit in the traditional Example 2.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-yield shelling roller assembly for a walnut shelling machine, characterized in that, It includes a frame, a receiving trough fixed on the frame, and two parallel rubber rollers and grooved rollers rotatably mounted on the frame. The rubber rollers and grooved rollers are horizontally arranged, with the rubber rollers positioned higher than the grooved rollers. The grooved rollers have several annular grooves on their circumference. The rubber rollers and grooved rollers are driven by a shell-breaking motor fixed on the frame, allowing them to rotate in opposite directions. The bottom of the receiving trough has a long, narrow discharge port, which is located directly above the grooved rollers.

2. The high-yield shelling roller assembly of the walnut shelling machine according to claim 1, characterized in that, A baffle is provided at the bottom of the trough wall near the rubber roller on the side of the material receiving trough outlet along the length of the outlet.

3. The high-yield shelling roller assembly of the walnut shelling machine according to claim 2, characterized in that, The curtain is a rubber curtain.

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