Small vertical type dry walnut shell breaking machine

Abstract

The small vertical type dry walnut shell breaking machine comprises a rack (1), a feeding hopper (2) and an extrusion chamber (3), a first-stage extrusion roller (6) and a first-stage grabbing roller (7) which are parallel to each other and provided with horizontal axes are symmetrically arranged on the upper portion in the extrusion chamber (3), and a second-stage grabbing roller (8) and a second-stage extrusion roller (9) which are parallel to each other and provided with horizontal axes are rotationally connected to the opposite positions of the lower portion of the extrusion chamber (3); the distance between the second-stage grabbing roller (8) and the second-stage extrusion roller (9) is smaller than the distance between the first-stage extrusion roller (6) and the first-stage grabbing roller (7). Two-stage extrusion is adopted, shell breaking of walnuts can be more refined, the distances between the extrusion rollers and the grabbing rollers of the two-stage extrusion are obtained by measuring the three dimensions of the walnuts, the distances between the upper stage and the lower stage are different, the upper stage is mainly used for processing large walnuts, and the lower stage is mainly used for processing large walnuts. And then the walnuts which are not completely crushed and not crushed are discharged in the next stage of crushing.

Description

Technical Field

[0001] The invention relates to a walnut shelling and kernel extraction technology, in particular to a small vertical dry walnut shelling machine. Background Art

[0002] Walnut kernels are rich in daily nutrients, containing a lot of protein and unsaturated fatty acids needed by the human body. These substances are needed for the metabolism of the human brain. They nourish brain cells and enhance brain function.

[0003] In the prior art, walnut shelling devices are generally divided into two categories: extrusion-type shelling devices and percussion-type shelling devices. These two categories are further divided into a variety of specific shelling devices, and a double-roller shelling device is one of them. The double-roller shelling device includes two rollers arranged in parallel, and an extrusion space is formed between the two rollers. The two rollers rotate towards each other, and the walnut is placed between the two rollers. As the two rollers rotate, the extrusion process is completed in the extrusion space.

[0004] In the prior art, the double-roller shell-breaking device makes it difficult for walnuts to enter the extrusion space and be effectively extruded during extrusion. On the one hand, when the rollers rotate, a part of the walnut enters the extrusion space and is subjected to a certain extrusion force, but the walnut does not enter the comfortable extrusion zone. After being subjected to the force, it will jump out of the extrusion space and escape from the extrusion; on the other hand, the shell-breaking device is usually part of the shell-breaking machine. As the feeding proceeds, a certain amount of walnuts will be received on the two rollers at the same time, and interference will occur between adjacent walnuts, making it difficult for them to be brought into the extrusion space by the rollers. This leads to the problem of low shell-breaking efficiency of the double-roller shell-breaking device in the prior art. Furthermore, the outer diameters of walnuts vary, which may cause excessive crushing of oversized walnuts, resulting in the crushing of walnut kernels and a large loss of walnut kernels; while walnut kernels that are too small may not be crushed. Summary of the invention

[0005] In order to solve the problem that walnuts cannot be effectively crushed due to different sizes and shapes of walnuts in the prior art, the present invention provides a small vertical dry walnut shelling machine with high shelling efficiency that can meet the shelling needs of both small and large walnuts.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a small vertical dry walnut shelling machine, including a frame 1, a feed hopper 2, an extrusion chamber 3, a discharge port, a driving device and a fan 19; the feed hopper 2, the extrusion chamber 3 and the discharge port are installed on the frame 1 in sequence from top to bottom and are internally connected, and the discharge port is divided into a walnut kernel discharge port 4 and a walnut shell outlet 5.

[0007] The interior of the extrusion chamber 3 is a hollow crushing chamber, and a first-level extrusion roller 6 and a first-level grabbing roller 7 with two horizontal axes and parallel to each other are symmetrically arranged in the upper part thereof. A second-level grabbing roller 8 and a second-level extrusion roller 9 with two horizontal axes and parallel to each other are rotatably connected at the position corresponding to the first-level extrusion roller 6 and the first-level grabbing roller 7 below the extrusion chamber 3, and the distance between the second-level grabbing roller 8 and the second-level extrusion roller 9 is smaller than the distance between the first-level extrusion roller 6 and the first-level grabbing roller 7.

[0008] The first-level squeezing roller 6 and the second-level squeezing roller 9 have the same structure, including a roller body 10 and a central axis 11. Both ends of the central axis 11 are rotatably connected to the frame 1. The roller body 10 is a hollow cylindrical structure and is concentrically sleeved on the central axis 11. A plurality of oblique striped protrusions 6-1 are evenly distributed on the outer surface of the roller body 10, and a nylon layer is provided on the protrusions to increase the roughness of contact with the walnut.

[0009] The first-level grabbing roller 7 and the second-level grabbing roller 8 have the same structure, including a roller body 10 and a central shaft 11. The two ends of the central shaft 11 are rotatably connected to the frame 1. The roller body 10 is a hollow cylindrical structure and is concentrically sleeved on the central shaft 11. The outer surface of the roller body 10 is provided with a plurality of evenly arranged arc grooves 12. The entrance of the arc groove 12 is circular, the diameter of the arc groove 12 is slightly larger than the horizontal diameter of the walnut, and the depth is 1 / 3 to 1 / 2 of the longitudinal diameter of the walnut. The size of the arc groove 12 on the second-level grabbing roller 8 is slightly smaller than the size of the arc groove 12 on the first-level grabbing roller 7. The distance in the long direction of the walnut is the longitudinal diameter, the shorter direction is the horizontal diameter, and the distance on both sides of the edge is the edge diameter.

[0010] A driving device capable of driving the primary squeezing roller 6 and the secondary squeezing roller 9 , as well as the secondary grabbing roller 8 and the primary grabbing roller 7 to rotate is arranged outside the squeezing chamber 3 .

[0011] Preferably, the arc grooves 12 are arranged in a spiral linear array in the axial direction of the roller body 10. When a walnut falls into the groove, part of the walnut enters the groove and part of the walnut remains outside the groove, so that the walnut moves with the groove and is squeezed by the force of the squeezing roller outside the groove.

[0012] The driving device includes a motor 13, a driving pulley, a driven pulley and a V-belt 20. The motor 13 is fixedly arranged at the lower part of the frame 1. The driving pulley is fixedly sleeved on the output shaft of the motor 13. The driven pulley is fixedly sleeved on one end of the central axis 11 of the primary extrusion roller 6 extending out of the extrusion chamber 3. The driving pulley and the driven pulley are connected by a V-belt transmission, thereby driving the primary extrusion roller 6 to rotate. A primary gear A14 is arranged at the other end of the central axis of the primary extrusion roller 6 extending out of the extrusion chamber 3. A primary gear B15 is arranged at the other end of the central axis of the primary grabbing roller 7 extending out of the extrusion chamber 3. A reversing gear 18 and a secondary gear A16 are fixed on the secondary grabbing roller 8 below the primary extrusion roller 6, and a reversing gear 18 and a secondary gear B17 are fixed on the secondary extrusion roller 9. The primary squeezing roller 6 drives the secondary grabbing roller 8 to rotate in the same direction through the secondary gear A16. The two reversing gears 18 are meshed to transmit power to the secondary gear B17 to drive the secondary squeezing roller 9. The secondary squeezing roller 9 then drives the primary grabbing roller 7 in the same direction through the chain and the primary gear B15, so that the primary squeezing roller 6 and the secondary grabbing roller 8 are in the same direction, and the primary grabbing roller 7 and the secondary squeezing roller 9 are in the same direction and rotate relative to the primary squeezing roller 6 and the secondary grabbing roller 8.

[0013] Beneficial effects: ① The present invention uses the walnut's own gravity as power, which not only reduces the machine manufacturing cost, but also reduces the floor space occupied by the machine operation; the protrusion 6-1 on the extrusion roller can increase the friction between the roller and the walnut, ensuring that the walnut will not slip during the extrusion process. The protrusion 6-1 is provided with a nylon layer to reduce the damage to the walnut kernel during shelling. The shell is broken by the oblique striped protrusion 6-1, so that the walnut is uniformly stressed at each point during the shelling process, the shelling efficiency is high, the shelling is thoroughly broken, and the whole kernel rate is high, which improves the shelling efficiency of the device. The groove setting on the grabbing roller can grab the walnut entering the crushing chamber to ensure that it is not ejected by the extrusion force. By changing the width and diameter of the two-stage grabbing roller groove, walnuts of different sizes can be squeezed and shelled, which improves the adaptability of the machine.

[0014] ② The present invention adopts two-stage extrusion, which can make the walnut shelling more refined. The distance between the extrusion roller and the grabbing roller of the two-stage extrusion is obtained by measuring the three dimensions of the walnut. The distances between the upper and lower levels are different. The upper level mainly processes large walnuts, and the incompletely broken and unbroken walnuts are broken out in the next level. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0017] Figure 3 It is a schematic diagram of the side structure of the extrusion chamber of the present invention.

[0018] Figure 4 It is a schematic diagram of the structure of the extrusion roller of the present invention.

[0019] Figure 5 It is a schematic diagram of the grab roller structure of the present invention.

[0020] In the figure: frame 1, feed hopper 2, extrusion chamber 3, walnut kernel discharge port 4, walnut shell outlet 5, primary extrusion roller 6, protrusion 6-1, primary grab roller 7, secondary grab roller 8, secondary extrusion roller 9, roller body 10, center shaft 11, arc groove 12, motor 13, primary gear A14, primary gear B15, secondary gear A16, secondary gear B17, reversing gear 18, fan 19, V-belt 20. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0022] like Figure 1 As shown, a small vertical dry walnut shelling machine includes a frame 1, a feed hopper 2, an extrusion chamber 3, a discharge port, a driving device and a fan 19; the feed hopper 2, the extrusion chamber 3 and the discharge port are sequentially installed on the frame 1 from top to bottom and are internally connected, and the discharge port is divided into a walnut kernel discharge port 4 and a walnut shell outlet 5.

[0023] The interior of the extrusion chamber 3 is a hollow crushing chamber, and a first-level extrusion roller 6 and a first-level grabbing roller 7 with two horizontal axes and parallel to each other are symmetrically arranged in the upper part thereof. A second-level grabbing roller 8 and a second-level extrusion roller 9 with two horizontal axes and parallel to each other are rotatably connected at the position corresponding to the first-level extrusion roller 6 and the first-level grabbing roller 7 below the extrusion chamber 3, and the distance between the second-level grabbing roller 8 and the second-level extrusion roller 9 is smaller than the distance between the first-level extrusion roller 6 and the first-level grabbing roller 7.

[0024] The first-level squeezing roller 6 and the second-level squeezing roller 9 have the same structure, including a roller body 10 and a central axis 11. Both ends of the central axis 11 are rotatably connected to the frame 1. The roller body 10 is a hollow cylindrical structure and is concentrically sleeved on the central axis 11. A plurality of oblique striped protrusions 6-1 are evenly distributed on the outer surface of the roller body 10, and a nylon layer is provided on the protrusions to increase the roughness of contact with the walnut.

[0025] The first-level grabbing roller 7 and the second-level grabbing roller 8 have the same structure, including a roller body 10 and a central shaft 11. The two ends of the central shaft 11 are rotatably connected to the frame 1. The roller body 10 is a hollow cylindrical structure and is concentrically sleeved on the central shaft 11. The outer surface of the roller body 10 is provided with a plurality of evenly arranged arc grooves 12. The entrance of the arc groove 12 is circular, the diameter of the arc groove 12 is slightly larger than the horizontal diameter of the walnut, and the depth is 1 / 3 to 1 / 2 of the longitudinal diameter of the walnut. The size of the arc groove 12 on the second-level grabbing roller 8 is slightly smaller than the size of the arc groove 12 on the first-level grabbing roller 7. The arc groove 12 is arranged in a spiral linear array in the axial direction of the roller body 10. When the walnut falls into the groove, part of the walnut enters the inside of the groove and part of it remains outside the groove, so that the walnut moves with the groove and is squeezed by the force of the squeezing roller outside the groove. The distance in the long direction of the walnut is the longitudinal diameter, the shorter direction is the transverse diameter, and the distance on both sides of the edge is the edge diameter.

[0026] A driving device capable of driving the primary squeezing roller 6 and the secondary squeezing roller 9 , as well as the secondary grabbing roller 8 and the primary grabbing roller 7 to rotate is arranged outside the squeezing chamber 3 .

[0027] The driving device includes a motor 13, a driving pulley, a driven pulley and a V-belt 20. The motor 13 is fixedly arranged at the lower part of the frame 1. The driving pulley is fixedly sleeved on the output shaft of the motor 13. The driven pulley is fixedly sleeved on one end of the central axis 11 of the primary extrusion roller 6 extending out of the extrusion chamber 3. The driving pulley and the driven pulley are connected by a V-belt transmission, thereby driving the primary extrusion roller 6 to rotate. A primary gear A14 is arranged at the other end of the central axis of the primary extrusion roller 6 extending out of the extrusion chamber 3. A primary gear B15 is arranged at the other end of the central axis of the primary grabbing roller 7 extending out of the extrusion chamber 3. A reversing gear 18 and a secondary gear A16 are fixed on the secondary grabbing roller 8 below the primary extrusion roller 6, and a reversing gear 18 and a secondary gear B17 are fixed on the secondary extrusion roller 9. The primary squeezing roller 6 drives the secondary grabbing roller 8 to rotate in the same direction through the secondary gear A16. The two reversing gears 18 are meshed to transmit power to the secondary gear B17 to drive the secondary squeezing roller 9. The secondary squeezing roller 9 then drives the primary grabbing roller 7 in the same direction through the chain and the primary gear B15, so that the primary squeezing roller 6 and the secondary grabbing roller 8 are in the same direction, and the primary grabbing roller 7 and the secondary squeezing roller 9 are in the same direction and rotate relative to the primary squeezing roller 6 and the secondary grabbing roller 8.

[0028] When in use, walnuts enter from the feed hopper 2 and fall due to gravity. The walnut shells are broken by the force between the first-level squeezing roller 6 and the first-level grabbing roller 7. The incompletely broken or unbroken walnuts are broken by the second-level grabbing roller 8 and the second-level squeezing roller 9 and enter the air supply area of ​​the fan 19. The walnut shells and kernels are separated by air according to their different densities and flow out from the walnut shell and walnut kernel outlets respectively, completing the walnut shelling.

Claims

1. A small vertical dry walnut shelling machine, comprising a frame (1), a feed hopper (2), an extrusion chamber (3), a discharge port, a driving device and an air separation mechanism; the feed hopper (2), the extrusion chamber (3) and the discharge port are sequentially mounted on the frame (1) from top to bottom and are internally connected, and the discharge port is divided into a walnut kernel discharge port (4) and a walnut shell outlet (5); characterized in that: The interior of the extrusion chamber (3) is a hollow crushing chamber, and a first-level extrusion roller (6) and a first-level grabbing roller (7) whose axes are horizontal and parallel to each other are symmetrically arranged at the upper part thereof; a second-level grabbing roller (8) and a second-level extrusion roller (9) whose axes are horizontal and parallel to each other are rotatably connected at a position corresponding to the position below the first-level extrusion roller (6) and the first-level grabbing roller (7) in the extrusion chamber (3); and the distance between the second-level grabbing roller (8) and the second-level extrusion roller (9) is smaller than the distance between the first-level extrusion roller (6) and the first-level grabbing roller (7); The first-stage squeezing roller (6) and the second-stage squeezing roller (9) have the same structure, comprising a roller body (10) and a central shaft (11), wherein both ends of the central shaft (11) are rotatably connected to the frame (1), the roller body (10) is a hollow cylindrical structure and is concentrically sleeved on the central shaft (11), and a plurality of oblique stripe-shaped protrusions (6-1) are evenly distributed on the outer surface of the roller body (10), and a nylon layer is provided on the protrusions to increase the roughness of contact with the walnut; The first-stage grabbing roller (7) and the second-stage grabbing roller (8) have the same structure, comprising a roller body (10) and a central shaft (11), wherein both ends of the central shaft (11) are rotatably connected to the frame (1), the roller body (10) is a hollow cylindrical structure and is concentrically sleeved on the central shaft (11), and the outer surface of the roller body (10) is provided with a plurality of evenly arranged arc grooves (12), wherein the entrance of the arc groove (12) is circular, the diameter of the arc groove (12) is slightly larger than the horizontal diameter of the walnut, and the depth is 1 / 3 to 1 / 2 of the vertical diameter of the walnut, and the size of the arc groove (12) on the second-stage grabbing roller (8) is slightly smaller than the size of the arc groove (12) on the first-stage grabbing roller (7); A driving device capable of driving the primary squeezing roller (6) and the secondary squeezing roller (9), as well as the secondary grabbing roller (8) and the primary grabbing roller (7) to rotate is arranged outside the squeezing chamber (3).

2. The small vertical dry walnut shelling machine according to claim 1, characterized in that: The arc-shaped grooves (12) are arranged in a spiral linear array in the axial direction of the roller body (10).

3. The small vertical dry walnut shelling machine according to claim 1 or 2, characterized in that: The driving device comprises a motor (13), a driving pulley, a driven pulley and a V-belt (20), wherein the motor (13) is fixedly arranged at the lower part of the frame (1), the driving pulley is fixedly sleeved on the output shaft of the motor (13), the driven pulley is fixedly sleeved on one end of the central axis (11) of the primary extrusion roller (6) extending out of the extrusion chamber (3), the driving pulley and the driven pulley are connected by a V-belt transmission, thereby driving the primary extrusion roller (6) to rotate, a primary gear A (14) is arranged at the other end of the central axis of the primary extrusion roller (6) extending out of the extrusion chamber (3), a primary gear B (15) is arranged at the other end of the central axis of the primary grabbing roller (7) extending out of the extrusion chamber (3), a reversing gear (18) and a secondary gear A (16) are fixed on the secondary grabbing roller (8) below the primary extrusion roller (6), and a reversing gear (18) and a secondary gear B (17) are fixed on the secondary extrusion roller (9). The primary squeezing roller (6) drives the secondary grabbing roller (8) to rotate in the same direction through the secondary gear A (16), and the two reversing gears (18) mesh to transmit power to the secondary gear B (17) to drive the secondary squeezing roller (9). The secondary squeezing roller (9) then drives the primary grabbing roller (7) in the same direction through the chain and the primary gear B (15), so that the primary squeezing roller (6) and the secondary grabbing roller (8) rotate in the same direction, and the primary grabbing roller (7) and the secondary squeezing roller (9) rotate in the same direction and rotate relative to the primary squeezing roller (6) and the secondary grabbing roller (8).

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