A dual-channel peanut skinning machine

Abstract

A dual-channel peanut skinning machine belongs to the field of agricultural processing machinery technology. It includes a frame and a feeding device, a skinning device, a clean peanut kernel collection device, and a transmission device, all housed within the frame. The feeding channel at the end of the feeding device extends into the skinning gap of the outer ring skinning wheel assembly of the skinning device. The skinning device is located within the frame and connects to the end of the feeding device. The skinning wheel assembly within the skinning device is positioned between the outer and inner ring skinning wheel assemblies and below the outer ring extrusion wheel assembly. Each skinning wheel on the assembly is located within the skinning gap between the inner and outer ring skinning wheel assemblies. The power wheel assembly and skinning wheel assembly of the skinning device are connected to the transmission device. The clean peanut kernel collection device includes an inner ring collection channel and an outer ring collection channel, respectively positioned below the extrusion wheels of the inner and outer ring skinning wheel assemblies, collecting the extruded clean peanut kernels. This invention effectively improves the whole kernel rate and cleanliness rate of peanut skinning, and enhances the versatility of peanut skinning machines.

Description

Technical Field

[0001] This invention belongs to the field of agricultural processing machinery technology, and in particular relates to a dual-channel peanut skinning machine. Background Technology

[0002] Peanuts are an economic crop used for both edible and oil production. With my country's peanut production increasing year by year, the total amount of peanut processing and utilization is also on the rise. Peanut kernels consist of the shelled kernel and the red skin. The red skin mainly consists of fiber and hemostatic agents, while the oil, protein, and other nutrients in peanuts are concentrated in the shelled kernel. Whether extracting protein powder from peanuts or improving the quality of peanut oil, removing the red skin after shelling is essential. This is a crucial step in the processing of these foods and raw materials. Therefore, it is necessary to design a peanut skin removal machine to remove the red skin from peanuts, preparing them for subsequent processing.

[0003] The analysis of the peanut skinning industry in my country and abroad mainly focuses on the fact that my country started later, and the main difficulties lie in the low skinning rate and whole kernel rate. Drawing inspiration from the EBJ and BSSA grain skinning machines developed by the Swiss company Braun, which use rubbing and impact methods respectively to remove the skin, China has achieved skinning rates of 60%–90% and whole kernel rates. Currently, there are three types of similar skinning machines abroad: drum type, disc type, and roller type. The pre-processing methods are largely similar to those in my country. The working principles of these peanut skinning machines, despite their different forms, are roughly the same: removing the skin through friction between the drum and the liner, the disc and the baffle, and other components, thus separating the kernels.

[0004] A comparison of domestic and international peanut skinning machines reveals an increasing demand for higher skinning rates, whole kernel rates, and economic efficiency. However, because domestic and international peanut skinning machines are designed for specific raw materials, their versatility is low, their compatibility is poor, and the replacement of some parts is difficult. Therefore, there is a need to continue developing a peanut skinning device that is simple in structure, low in cost, and highly efficient. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a dual-channel peanut skinning machine. It effectively improves the peanut skinning rate and whole-kernel rate, increases the machine's working efficiency, and enhances its versatility.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] This invention relates to a dual-channel peanut skinning machine, comprising a frame and a feeding device, a skinning device, a clean peanut kernel collection device, and a transmission device disposed within the frame;

[0008] The feeding channel at the end of the feeding device extends into the stripping gap of the outer ring stripping wheel assembly of the stripping device;

[0009] The garment-removing device includes inner and outer ring garment-removing wheel sets, a power wheel set, inner and outer ring insertion wheel sets, inner and outer ring extrusion wheel sets, inner and outer ring skin-breaking devices, and a garment-cleaning wheel set. The inner and outer ring garment-removing wheel sets are concentrically arranged on the frame. The outer ring garment-removing wheel set is supported within the frame by two symmetrical sets of first power wheel sets, while the inner ring garment-removing wheel set is supported by three sets of second power wheel sets evenly spaced along its outer circumference. The power wheels of the first power wheel sets are positioned within the garment-removing gaps of the outer ring garment-removing wheel sets, and the power wheels of the second power wheel sets are positioned on the outer ring. The peeling wheel assembly and the inner peeling wheel assembly are in close contact with each other. The first power wheel assembly is connected to the electric motor through a transmission device, and drives the outer peeling wheel assembly to rotate through belt drive. The second power wheel assembly is driven to rotate by the outer peeling wheel assembly due to friction, thereby driving the inner peeling wheel assembly to rotate. The outer peeling gap between the inner and outer peeling wheel assemblies is larger than the inner peeling gap. A peanut diversion guide groove is provided between the inner and outer peeling wheel assemblies below the end of the feed channel. The end of the peanut diversion guide groove extends into the peeling gap of the inner peeling wheel assembly.

[0010] The outer ring extrusion wheel assembly is located above and outside the feed direction at the end of the feed channel of the outer ring extrusion wheel assembly. The outer ring extrusion wheel assembly is located below the feed end of the outer ring extrusion wheel assembly. The outer ring extrusion wheel and the outer ring extrusion wheel are respectively located in the extrusion gap of the outer ring extrusion wheel assembly. The outer ring breaking device is located inside the outer ring extrusion wheel assembly below the outer ring extrusion wheel assembly at the end of the feed channel. Each breaking blade on it is located in the extrusion gap of the outer ring extrusion wheel assembly.

[0011] The inner ring extrusion wheel assembly is located above and outside the inner ring stripping wheel assembly on the other side of the end of the feed channel. The inner ring extrusion wheel assembly is located below and to the right of the inner ring extrusion wheel assembly. The inner ring extrusion wheel and the inner ring extrusion wheel are respectively located in the stripping gap of the inner ring stripping wheel assembly. The inner ring breaking device is located inside the inner ring stripping wheel assembly between the inner ring extrusion wheel assembly and the inner ring extrusion wheel assembly. Each breaking knife on it is located in the stripping gap of the inner ring stripping wheel assembly.

[0012] The cleaning wheel assembly is located between the outer ring stripping wheel assembly and the inner ring stripping wheel assembly below the outer ring extrusion wheel assembly. Each cleaning wheel on it is located in the stripping gap between the inner and outer ring stripping wheel assemblies. The cleaning wheel assembly is connected to the transmission device.

[0013] The cleaned peanut kernel collection device includes an inner ring collection channel and an outer ring collection channel. The outer ring collection channel is located below the outer ring extrusion wheel in the outer ring dehulling wheel assembly, and the inner ring collection channel is located below the inner ring extrusion wheel in the inner ring dehulling wheel assembly. After extrusion, the cleaned peanut kernels fall into the inner ring collection channel or the outer ring collection channel for collection due to gravity.

[0014] Furthermore, the stripping gap between the outer ring stripping wheel assembly and the inner ring stripping wheel assembly is a wedge-shaped structure that is wider on the outside and narrower on the inside. The small end L1 of the wedge-shaped stripping gap of the outer ring stripping wheel assembly is 11mm to 13mm, and the large end L2 is 25mm to 28mm. The small end L3 of the wedge-shaped stripping gap of the inner ring stripping wheel assembly is 3mm to 5mm, and the large end L4 is 11mm to 13mm. The angle α between the wedge-shaped inclined surface of the stripping wheel and the vertical direction in both the outer ring stripping wheel assembly and the inner ring stripping wheel assembly is 10° to 20°.

[0015] Furthermore, the width of the outer ring undressing wheel is smaller than the width of the inner ring undressing wheel to ensure that the undressing gap of the inner ring undressing wheel assembly is smaller than that of the outer ring undressing wheel assembly.

[0016] Furthermore, the feeding device includes a feeding hopper, a feeding channel, and a peanut diversion guide trough. The feeding hopper is located above the frame, and its discharge end is provided with a feeding channel having the same number of peeling gaps as the outer ring peeling wheel assembly. The feeding channel extends into the peeling gaps of the outer ring peeling wheel assembly. The peanut diversion guide trough is composed of multiple guide troughs arranged in parallel and is located between the inner and outer ring peeling wheel assemblies below the end of the feeding channel. The number of guide troughs is the same as the number of peeling gaps of the inner ring peeling wheel assembly, and the multiple guide troughs extend into the peeling gaps of the inner ring peeling wheel assembly respectively.

[0017] Furthermore, the insertion depth of the outer ring extrusion wheel is such that the extruded peanut kernels come into contact with the peeling blades on the outer ring peeling device, and the width W2 of the outer ring extrusion wheel is 15mm to 20mm; the insertion depth of the inner ring extrusion wheel is such that the extruded peanut kernels come into contact with the peeling blades on the inner ring peeling device, and the inner ring extrusion width W3 is 5mm to 7mm. The spacing between adjacent outer ring extrusion wheels matches the spacing between adjacent outer ring peeling wheel sets, and the spacing between adjacent inner ring extrusion wheels matches the spacing between adjacent inner ring peeling wheel sets.

[0018] Furthermore, the outer ring ripping device and the inner ring ripping device are the same, both having multiple ripping knives on their ripping shaft. The number of ripping knives is the same as the number of stripping gaps of the corresponding outer or inner ring stripping wheel set. The spacing between adjacent ripping knives matches the outer or inner ring stripping wheel set. The ripping shaft is fixed on the frame, and the ripping knives are respectively mounted on the ripping shaft by springs. The working end of the ripping knife extends into the stripping gap of the outer or inner ring stripping wheel by 10mm to 15mm.

[0019] Furthermore, the number of outer ring extrusion wheels is the same as the number of stripping gaps in the outer ring stripping wheel assembly, the spacing between adjacent outer ring extrusion wheels matches the outer ring stripping wheel assembly, the depth to which the outer ring extrusion wheel extends into the outer ring stripping wheel is the same as the thickness of the adjacent outer ring stripping wheel, and the width W4 of the outer ring extrusion wheel is 8mm to 10mm; the spacing between adjacent inner ring extrusion wheels matches the inner ring stripping wheel assembly, the depth to which the inner ring extrusion wheel extends into the inner ring stripping wheel is the same as the thickness of the adjacent inner ring stripping wheel, and the width W5 of the inner ring extrusion wheel is 1mm to 2mm.

[0020] Furthermore, the cleaning wheel is shaped like a five-pointed star, with each point of the star corresponding to different gaps in the inner and outer rings of the stripping wheel assembly. The thickness of the wheel at the end of the five-pointed star is less than the thickness of the wheel near the root of the inner point. The wheel at the end of the five-pointed star enters the gap of the inner ring stripping wheel, while the wheel near the root of the inner point enters the gap of the outer ring stripping wheel. The cleaning wheel shaft is positioned close to the outer ring stripping wheel assembly to ensure that the wheel near the root of the inner point of the five-pointed star can remove red clothes from the outer ring stripping wheel, and the wheel at the end of the five-pointed star can remove red clothes from the inner ring stripping wheel. The spacing between adjacent cleaning wheels matches the stripping wheel assembly.

[0021] Furthermore, the thickness W6 of the inner corner wheel near the root of the pentagon is 11mm to 13mm, and the thickness W7 of the corner wheel is 3mm to 5mm.

[0022] Furthermore, the shape of the power wheel of the first power wheel assembly is the same as the shape of the clothing removal gap of the outer ring clothing removal wheel assembly, and the shape of the power wheel of the second power wheel assembly is the same as the shape of the clothing removal gap of the inner ring clothing removal wheel assembly.

[0023] The beneficial effects of this invention are as follows:

[0024] 1. This invention utilizes a feeding device, a peeling device, a clean peanut kernel collection device, and a transmission device working in concert. During operation, peanut kernels pre-treated by wet processing enter the hopper. Larger diameter kernels are trapped in the peeling gaps of the outer peeling wheel assembly, while smaller diameter kernels pass through these gaps and fall into the peeling gaps of the inner peeling wheel assembly, rotating with the peeling wheels. When rotating to the extrusion wheel, the large and small peanut kernels are forced into the peeling gaps of the outer and inner peeling wheel assemblies to a certain depth. Upon reaching the skin-breaking device, a slit is cut in the red skin of the peanut kernel. When the peanut kernel moves to the extrusion wheel position with the rotation of the peeling wheel assembly, the extrusion wheel expels the clean peanut kernel from the red skin, which falls into the collection channel for collection. The remaining red skin in the peeling gaps is removed by the cleaning wheel and ejected from the machine with its rotation. This completes one working cycle of peeling the peanut kernels. This invention can effectively improve the removal rate and whole kernel rate of peanut kernels from their red skin, increase the working efficiency of the red skin removal machine, and improve the versatility of the red skin removal machine.

[0025] 2. This invention employs a dual-channel structure with different peeling gap sizes for peanut peeling. The peeling gap of the peeling wheel assembly adopts a wedge-shaped structure, which can improve the machine's versatility in peeling different types of peanuts and increase production efficiency.

[0026] 3. The cleaning wheel of the present invention is a five-pointed star. Each point of the five-pointed star corresponds to a different stripping gap of the inner and outer stripping wheel sets. The thickness of the wheel piece at the end of the five-pointed star is less than the thickness of the wheel piece near the root of the inner point of the five-pointed star. The wheel piece at the end of the five-pointed star enters the inner stripping wheel gap, and the wheel piece near the root of the inner point of the five-pointed star enters the outer stripping wheel gap. The position of the cleaning wheel shaft is closer to the outer stripping wheel to ensure that the root of the inner point of the five-pointed star wheel piece can remove the red skin on the outer stripping wheel, and the end of the five-pointed star wheel piece can remove the red skin on the inner stripping wheel. The two stripping channels formed by the inner and outer stripping wheel sets share a set of cleaning wheels, thus optimizing the overall structure, saving power consumption, and improving the working efficiency of the peanut red skin removal machine. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 for Figure 1 A top-down view.

[0029] Figure 3 This is a schematic diagram illustrating the working principle of the present invention.

[0030] Figure 4 This is a schematic diagram of the stripping gap of the stripping wheel assembly.

[0031] Figure 5 This is a plan view of the feeding device.

[0032] Figure 6 This is a planar schematic diagram of the extrusion wheel.

[0033] Figure 7 This is a schematic diagram of the skin-breaking device.

[0034] Figure 8 This is a planar schematic diagram of the extrusion wheel.

[0035] Figure 9 This is a plan view of the clothes cleaning wheel.

[0036] Figure 10 This is a left-side view of the cleaning wheel.

[0037] Figure 11 This is a three-dimensional structural diagram of the clothes cleaning wheel.

[0038] Figure 12 This is a plan view of the drive wheel assembly.

[0039] In the diagram: 1. Frame;

[0040] 2. Feed hopper; 21. Feed channel; 22. Fixed support;

[0041] 3. Peanut diversion channel;

[0042] 4. The inner ring is squeezed into the wheel assembly; 41. The inner ring is squeezed into the axle; 42. The inner ring is squeezed into the wheel.

[0043] 5. Outer ring slingback wheel assembly; 51. Outer ring slingback wheel;

[0044] 6. Inner ring extrusion wheel assembly; 61. Inner ring extrusion wheel;

[0045] 7. Drive wheel set; 71. First drive wheel set; 72. Second drive wheel set;

[0046] 8. Transmission device; 81. First transmission belt group; 82. Second transmission belt group; 83. Third transmission belt group; 84. Fourth transmission belt group;

[0047] 9. Peeling device; 91. Mounting shaft; 92. Peeling knife; 93. Inner ring peeling device; 94. Outer ring peeling device;

[0048] 10. Electric motor;

[0049] 11. Output shaft;

[0050] 12. Inner ring undressing wheel assembly; 121. Inner ring undressing wheel;

[0051] 13. Cleaning wheel assembly; 131. Cleaning wheel axle; 132. Cleaning wheel; 133. Inner corner of the pentagram near the root; 134. End of the pentagram;

[0052] 14. Cleaned peanut kernel collection device; 141. Inner ring collection channel; 142. Outer ring collection channel;

[0053] 15. The outer rim is squeezed into the wheelset; 151. The outer rim is squeezed into the wheel.

[0054] 16. Outer ring extrusion wheel assembly; 161. Extrusion shaft; 162. Outer ring extrusion wheel;

[0055] 17. Skin-breaking device; 171. Skin-breaking shaft; 172. Skin-breaking knife. Detailed Implementation

[0056] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] Example 1: As Figure 1-3As shown, the present invention discloses a dual-channel peanut skinning machine, comprising a frame 1 and a feeding device, a skinning device, a clean peanut kernel collection device 14, and a transmission device 8 disposed within the frame 1; the feeding channel at the end of the feeding device extends into the skinning gap of the outer ring skinning wheel assembly of the skinning device; the skinning device includes an inner ring skinning wheel assembly 12, an outer ring skinning wheel assembly 5, a power wheel assembly 7, an inner ring extrusion wheel assembly 4, an outer ring extrusion wheel assembly 15, an inner ring extrusion wheel assembly 6, an outer ring extrusion wheel assembly 16, inner and outer ring skin-breaking devices 93 and 94, and a skin-cleaning wheel assembly 13; the inner and outer ring skinning wheel assemblies 12 and 5 are concentrically arranged on the frame 1, wherein the outer ring skinning wheel assembly 5 passes through... Two symmetrical sets of first power wheel sets 71 are supported inside the frame 1. The inner ring stripping wheel set 12 is supported by three sets of second power wheel sets 72 evenly spaced along its outer circumference. The power wheel of the first power wheel set 71 is placed in the stripping gap of the outer ring stripping wheel set 5. The power wheel on the second power wheel set 72 is placed between the outer ring stripping wheel set 5 and the inner ring stripping wheel set 12, and is in close contact with both stripping wheel sets. The first power wheel set 71 is connected to the motor 10 through the transmission device 8, and drives the outer ring stripping wheel set 5 to rotate through belt drive. The second power wheel set 72 is driven to rotate by the outer ring stripping wheel set 5 due to friction, thereby driving the rotation of the inner ring stripping wheel set 12.

[0058] The outer stripping gap of the inner and outer stripping wheel sets 5 and 12 is larger than the inner stripping gap; a peanut diversion guide groove 3 is provided between the inner and outer stripping wheel sets 5 and 12 below the end of the feed channel 21, and the end of the peanut diversion guide groove 3 extends into the stripping gap of the inner stripping wheel set 12.

[0059] The outer ring extrusion wheel assembly 15 is located above and outside the feed direction of the feed channel 21 at the end of the outer ring extrusion wheel assembly 5. The outer ring extrusion wheel assembly 16 is located below the feed end of the outer ring extrusion wheel assembly 15. The outer ring extrusion wheel 151 and the outer ring extrusion wheel 162 are respectively located in the extrusion gap of the outer ring extrusion wheel assembly 5. The outer ring breaking device 94 is located inside the outer ring extrusion wheel assembly 5 below the outer ring extrusion wheel assembly 15 at the end of the feed channel 21. The breaking blades 92 on it are respectively located in the extrusion gap of the outer ring extrusion wheel assembly 5.

[0060] The inner ring extrusion wheel assembly 4 is located above the outer side of the inner ring stripping wheel assembly 12 on the other side of the end of the feed channel 21. The inner ring extrusion wheel assembly 6 is located below the inner ring extrusion wheel assembly 4. The inner ring extrusion wheel 42 and the inner ring extrusion wheel 61 are respectively located in the stripping gap of the inner ring stripping wheel assembly 5. The inner ring breaking device 93 is located inside the inner ring stripping wheel assembly 5 between the inner ring extrusion wheel assembly 6 and the inner ring extrusion wheel assembly 4. The breaking knife 92 on it is located in the stripping gap of the inner ring stripping wheel assembly 5.

[0061] The cleaning wheel assembly 13 is located between the outer ring removing wheel assembly 5 and the inner ring removing wheel assembly 12, and is placed below the outer ring extrusion wheel assembly 16. The cleaning wheels 132 on it are respectively located in the removing gap between the inner ring and the outer ring removing wheel assemblies 12 and 5. The cleaning wheel assembly 13 is connected to the transmission device.

[0062] The cleaned peanut kernel collection device 14 includes an inner ring collection channel 141 and an outer ring collection channel 142. The outer ring collection channel 142 is located below the outer ring extrusion wheel 162 in the outer ring dehulling wheel assembly 5, and the inner ring collection channel 141 is located below the inner ring extrusion wheel 61 in the inner ring dehulling wheel assembly 12. After extrusion, the cleaned peanut kernels fall into the inner ring collection channel 141 or the outer ring collection channel 142 for collection due to gravity.

[0063] In this example, the inner ring stripping wheel assembly 12 and the outer ring stripping wheel assembly 5 each have 7 stripping wheels, the first power wheel assembly 71 and the second power wheel assembly 72 each have 8 power wheels, the inner ring extrusion wheel assembly 4 and the outer ring extrusion wheel assembly 15 each have 6 extrusion wheels, the inner ring extrusion wheel assembly 6 and the outer ring extrusion wheel assembly 16 each have 6 extrusion wheels, the inner and outer ring rupture devices 93 and 94 each have 6 rupture blades 92, and the cleaning wheel assembly 13 has 6 cleaning wheels 132.

[0064] like Figure 4 As shown, the stripping gap of the outer ring stripping wheel assembly 5 and the inner ring stripping wheel assembly 12 is a wedge-shaped structure that is wider on the outside and narrower on the inside. The small end L1 of the stripping gap of the wedge structure of the outer ring stripping wheel assembly 5 is 11mm~13mm, and the large end L2 is 25mm~28mm. The small end L3 of the stripping gap of the wedge structure of the inner ring stripping wheel assembly 12 is 3mm~5mm, and the large end L4 is 11mm~13mm. The angle α between the wedge-shaped inclined surface of the stripping wheel of the outer ring stripping wheel assembly and the vertical direction is 10°~20°.

[0065] The width of the outer ring undressing wheel 51 is smaller than the width of the inner ring undressing wheel 121, so as to ensure that the undressing gap of the inner ring undressing wheel assembly 12 is smaller than the undressing gap of the outer ring undressing wheel assembly 5.

[0066] like Figure 1 , Figure 3 , Figure 5As shown, the feeding device includes a feeding hopper 2 and a peanut diversion guide 3. The feeding hopper 2 is located above the frame 1, and its discharge end is provided with a feeding channel 21 with the same number of peeling gaps as the outer ring peeling wheel group 5. In this example, the feeding channel is 100mm long and the width W1 is 15mm to 20mm. The feeding channel at the end of the feeding channel 21 extends into the peeling gap of the outer ring peeling wheel group 5. The peanut diversion guide 3 is located between the inner ring and outer ring peeling wheel groups 12 and 5 below the end of the feeding channel 21. The peanut diversion guide 3 is composed of multiple guide channels arranged in parallel. The number of guide channels is the same as the number of peeling gaps of the inner ring and outer ring peeling wheel groups 12 and 5. The multiple guide channels extend into the peeling gap of the inner ring peeling wheel group 12.

[0067] like Figure 1 , Figure 3 , Figure 6 As shown, the diameter of the outer ring squeezing wheel 151 should allow the peanut kernels to be smoothly squeezed into the peeling gap of the outer ring peeling wheel group 5. The squeezing depth of the outer ring squeezing wheel 151 should allow the squeezed peanut kernels to contact the peeling blade 92 on the outer ring peeling device 94. The width W2 of the outer ring squeezing wheel 151 is 15mm to 20mm. The diameter of the inner ring squeezing wheel 42 should allow the peanut kernels to be smoothly squeezed into the peeling gap of the inner ring peeling wheel group 12. The squeezing depth of the inner ring squeezing wheel 42 should allow the squeezed peanut kernels to contact the peeling blade 92 on the inner ring peeling device 93. The width W3 of the inner ring squeezing wheel 42 is 5mm to 7mm. The spacing between adjacent outer ring squeezing wheels 151 matches the adjacent outer ring peeling wheel group 5, and the spacing between adjacent inner ring squeezing wheels 42 matches the adjacent inner ring peeling wheel group 12.

[0068] like Figure 7 As shown, the outer ring ripping device 94 and the inner ring ripping device 93 have the same structure, both consisting of multiple ripping blades 92 mounted on their mounting shaft 91. The number of ripping blades 92 is the same as the number of stripping gaps in the corresponding outer or inner ring stripping wheel sets 5 and 12. The spacing between adjacent ripping blades 92 matches the outer or inner ring stripping wheel sets 5 and 12. The mounting shaft 91 is fixed on the frame 1, and the ripping blades 92 are respectively mounted on the mounting shaft 91 by springs. The working ends of the ripping blades extend into the stripping gaps of the outer or inner ring stripping wheel sets 5 and 12 by 10mm to 15mm.

[0069] like Figure 8As shown, the number of outer ring extrusion wheels 162 is the same as the number of peeling gaps in the outer ring peeling wheel group 5. The spacing between adjacent outer ring extrusion wheels 162 matches the outer ring peeling wheel group 5. The diameter of the outer ring extrusion wheels 162 is not limited, but it must ensure that the cleaned peanut kernels are smoothly extruded from the outer ring peeling wheel group 5. The depth to which the outer ring extrusion wheels 162 extend into the outer ring peeling wheel group 5 is the same as the thickness of the outer ring peeling wheel 51. The width W4 of the outer ring extrusion wheels 162 is 8mm to 10mm. The diameter of the inner ring extrusion wheels 61 is not limited, but it must ensure that the cleaned peanut kernels are smoothly extruded from the inner ring peeling wheel group 12. The depth to which the inner ring extrusion wheels 61 extend into the inner ring peeling wheel group 12 is the same as the thickness of the inner ring peeling wheel 121. The width W5 of the inner ring extrusion wheels 61 is 1mm to 2mm.

[0070] like Figure 9 , Figure 10 , Figure 11 As shown, the cleaning wheel 132 is generally shaped like a five-pointed star. Each point of the five-pointed star corresponds to a different gap in the inner and outer rings of the clothes-removing wheel assembly. The thickness of the wheel piece at the end of the five-pointed star is less than the thickness of the wheel piece near the root of the inner point of the five-pointed star. The wheel piece at the end of the five-pointed star enters the gap of the inner ring of the clothes-removing wheel, and the wheel piece near the root of the inner point of the five-pointed star enters the gap of the outer ring of the clothes-removing wheel. The thickness W6 of the wheel piece near the root of the inner point of the five-pointed star is 11mm to 13mm, and the thickness W7 of the wheel piece at the end of the five-pointed star is 3mm to 5mm. The cleaning wheel shaft 131 is fixed close to the outer ring of the clothes-removing wheel assembly 5 to ensure that the wheel piece near the root of the inner point of the cleaning wheel removes red clothes from the outer ring of the clothes-removing wheel 51, and the wheel piece at the end of the five-pointed star removes red clothes from the inner ring of the clothes-removing wheel 121. The spacing between adjacent cleaning wheels 132 matches the clothes-removing wheel assembly.

[0071] like Figure 12 As shown, the shape of the power wheel of the first power wheel group 71 is the same as the shape of the clothing removal gap of the outer ring clothing removal wheel group 5, and the shape of the power wheel of the second power wheel group 72 is the same as the shape of the clothing removal gap of the inner ring clothing removal wheel group 12.

[0072] like Figure 1 As shown, the transmission device 8 includes a first transmission belt group 81 and a second transmission belt group 82, respectively connected to the output shaft 11 of the motor 10 and the rotating shaft of the first power wheel group 71; a third transmission belt group 83 connecting the rotating shaft of the first power wheel group 71 and the cleaning wheel shaft 131 of the cleaning wheel group 13; and a fourth transmission belt group 84 connecting the three second power wheel groups 72. Each transmission belt group consists of a transmission belt and a transmission wheel mounted on the corresponding shaft. The transmission belt can be a belt or a chain, and the transmission wheel can be a pulley or a sprocket.

[0073] All other components of this invention adopt existing structures and will not be described in detail.

[0074] In operation, peanuts pre-treated by wet processing enter the feed hopper 2. Larger peanuts are trapped in the peeling gap of the outer peeling wheel assembly 5, while smaller peanuts pass through the outer peeling wheel assembly 5 and fall into the peeling gap of the inner peeling wheel assembly 12, rotating with the peeling wheels. When rotating to the extrusion wheel, the large and small peanuts are squeezed to a certain depth into the peeling gaps of the outer and inner peeling wheel assemblies 5 and 12, respectively. Upon reaching the skin-breaking device 17, a slit is cut in the red skin of the peanut. When the peanut moves to the extrusion wheel position with the rotation of the peeling wheel assembly, the extrusion wheel expels the clean peanut from the red skin, and the extruded clean peanut falls into the collection channel for collection. The remaining red skin in the peeling gap is removed by the cleaning wheel 132 and ejected from the machine as the cleaning wheel 132 rotates. This completes one working cycle of peanut peeling.

[0075] Example 2: This example differs from Example 1 in that: in this example, the minimum value L1 of the stripping gap of the wedge-shaped structure of the outer ring stripping wheel assembly 5 is 11mm, and the maximum value L2 is 25mm; the minimum value L3 of the stripping gap of the wedge-shaped structure of the inner ring stripping wheel assembly 12 is 3mm, and the maximum value L4 is 11mm; the angle α between the wedge-shaped inclined surface of the inner and outer ring stripping wheels and the vertical direction is 10°.

[0076] The feeding channel 21 of the feeding hopper 2 is 100mm long and 15mm wide (W1). The outer ring extrusion roller 151 has a diameter of 100mm and a width (W2) of 15mm; the inner ring extrusion roller 42 has a diameter of 100mm and a width (W3) of 5mm.

[0077] The working ends of the shaving blades 92 of the inner and outer ring shaving devices 93 and 94 respectively extend into the 10mm gap between the inner and outer ring stripping wheels.

[0078] The inner extrusion wheel 61 has a diameter of 80mm and a width W4 of 8mm; the outer extrusion wheel 162 has a diameter of 120mm and a width W4 of 1mm. The thickness W6 of the wheel piece near the root of the pentagonal inner corner of the cleaning wheel 132 is 11mm, and the thickness W7 of the wheel piece at the corner end is 3mm.

[0079] Example 3: This example differs from Example 1 in that: in this example, the minimum value L1 of the wedge-shaped stripping gap of the outer ring stripping wheel assembly 5 is 13mm, and the maximum value L2 is 28mm; the minimum value L3 of the wedge-shaped stripping gap of the inner ring stripping wheel assembly 12 is 5mm, and the maximum value L4 is 13mm; the angle α between the wedge-shaped inclined surface of the inner and outer ring stripping wheels and the vertical direction is 20°.

[0080] The feeding channel 21 of the feeding hopper 2 is 100mm long and 20mm wide (W1). The outer ring extrusion roller 151 has a diameter of 150mm and a width (W2) of 20mm; the inner ring extrusion roller 42 has a diameter of 140mm and a width (W3) of 7mm.

[0081] The working ends of the shaving blades 92 of the inner and outer ring shaving devices 93 and 94 respectively extend into the 15mm gap between the inner and outer ring stripping wheel sets.

[0082] The inner extrusion wheel 61 has a diameter of 100mm and a width W4 of 10mm; the outer extrusion wheel 162 has a diameter of 150mm and a width W4 of 2mm. The thickness W6 of the wheel piece near the root of the pentagonal inner corner of the cleaning wheel 132 is 13mm, and the thickness W7 of the wheel piece at the corner end is 5mm.

[0083] It is understood that the above specific description of the present invention is only for illustrating the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.

Claims

1. A double pass peanut red skin removing machine, characterized in that: The machine frame and the feeding device, the stripping device, the clean peanut kernel collecting device and the transmission device arranged in the machine frame; The feeding channel at the end of the feeding device extends into the stripping gap of the outer circle stripping wheel group of the stripping device; The stripping device comprises an inner circle and outer circle stripping wheel group, a power wheel group, an inner circle and outer circle extrusion wheel group, an inner circle and outer circle breaking device and a cleaning wheel group, and the inner circle and outer circle stripping wheel group is concentrically arranged on the machine frame, wherein the outer circle stripping wheel group is supported in the machine frame through two groups of symmetrical first power wheel groups, the inner circle stripping wheel group is supported through three groups of second power wheel groups which are uniformly and spacedly arranged along the outer circumference thereof, the power wheels of the first power wheel group are arranged in the stripping gap of the outer circle stripping wheel group, the power wheels on the second power wheel group are arranged between the outer circle stripping wheel group and the inner circle stripping wheel group and are in close contact with the two stripping wheel groups, the first power wheel group is connected with the motor through the transmission device and drives the outer circle stripping wheel group to rotate through belt transmission, the second power wheel group is driven to rotate by the outer circle stripping wheel group due to friction, thereby driving the rotation of the inner circle stripping wheel group, the outer stripping gap of the inner circle and outer circle stripping wheel group is larger than the inner stripping gap, a peanut shunt guide groove is arranged between the inner circle and outer circle stripping wheel group below the end of the feeding channel, and the end of the peanut shunt guide groove extends into the stripping gap of the inner circle stripping wheel group; The outer circle extrusion wheel group is located above the outer side of the outer circle stripping wheel group in the feeding direction at the end of the feeding channel of the outer circle stripping wheel group, the outer circle extrusion wheel group is located below the feeding end of the outer circle extrusion wheel group, the outer circle extrusion wheel and the outer circle extrusion wheel are respectively arranged in the stripping gap of the outer circle stripping wheel group; the outer circle breaking device is located on the inner side of the outer circle stripping wheel group below the outer circle extrusion wheel group at the end of the feeding channel, and each breaking knife thereon is respectively arranged in the stripping gap of the outer circle stripping wheel group; The inner circle extrusion wheel group is located above the outer side of the inner circle stripping wheel group on the other side of the end of the feeding channel, the inner circle extrusion wheel group is located below the right side of the inner circle extrusion wheel group, the inner circle extrusion wheel and the inner circle extrusion wheel are respectively arranged in the stripping gap of the inner circle stripping wheel group; the inner circle breaking device is located on the inner side of the inner circle stripping wheel group between the inner circle extrusion wheel group and the inner circle extrusion wheel group, and each breaking knife thereon is respectively arranged in the stripping gap of the inner circle stripping wheel group; The cleaning wheel group is located between the outer circle stripping wheel group and the inner circle stripping wheel group below the outer circle extrusion wheel group, each cleaning wheel thereon is respectively arranged in the stripping gap of the inner circle and outer circle stripping wheel group, and the cleaning wheel group is connected with the transmission device; The clean peanut kernel collecting device comprises an inner circle collecting channel and an outer circle collecting channel, the outer circle collecting channel is located below the outer circle extrusion wheel in the outer circle stripping wheel group, and the inner circle collecting channel is located below the inner circle extrusion wheel in the inner circle stripping wheel group, and the clean peanut kernels after extrusion fall into the inner circle collecting channel or the outer circle collecting channel due to gravity for collection.

2. The double pass peanut red skin removing machine according to claim 1, characterized in that: The stripping gaps of the outer circle stripping roller group and the inner circle stripping roller group are wedge-shaped structures with outer width being larger than inner width, the small end L1 of the wedge-shaped stripping gap of the outer circle stripping roller group is 11mm-13mm, the large end L2 is 25mm-28mm, the small end L3 of the wedge-shaped stripping gap of the inner circle stripping roller group is 3mm-5mm, the large end L4 is 11mm-13mm, and the included angle α between the wedge-shaped slope of the stripping roller in the outer circle stripping roller group and the vertical direction is 10°-20°.

3. The double pass peanut red skin removing machine according to claim 1, characterized in that: The width of the outer circle stripping roller is smaller than that of the inner circle stripping roller, so as to ensure that the stripping gap of the inner circle stripping roller group is smaller than that of the outer circle stripping roller group.

4. The double pass peanut red skin removing machine according to claim 1, characterized in that: The feeding device comprises a feeding hopper, a feeding channel and a peanut shunting guide groove. The feeding hopper is located above the frame, and its discharge end is provided with feeding channels equal in number to the stripping gaps of the outer circle stripping roller group. The feeding channels extend into the stripping gaps of the outer circle stripping roller group. The peanut shunting guide groove is composed of a plurality of guide grooves arranged side by side and located between the inner circle stripping roller group and the outer circle stripping roller group below the end of the feeding channel. The number of the guide grooves is equal to the number of the stripping gaps of the inner circle stripping roller group, and the plurality of guide grooves extend into the stripping gaps of the inner circle stripping roller group, respectively.

5. The dual pass peanut red skin shelling machine as claimed in claim 1, wherein: The extruding depth of the outer circle extruding roller is such that the extruded peanut kernels are in contact with the skin breaking knives on the outer circle skin breaking device. The width W2 of the outer circle extruding roller is 15mm-20mm. The extruding depth of the inner circle extruding roller is such that the extruded peanut kernels are in contact with the skin breaking knives on the inner circle skin breaking device. The extruding width W3 of the inner circle extruding roller is 5mm-7mm. The spacing between adjacent outer circle extruding rollers matches the adjacent outer circle stripping roller group, and the spacing between adjacent inner circle extruding rollers matches the adjacent inner circle stripping roller group.

6. The dual pass peanut red skin shelling machine as claimed in claim 1, wherein: The outer circle skin breaking device and the inner circle skin breaking device are the same, and each is provided with a plurality of skin breaking knives on its skin breaking shaft. The number of the skin breaking knives is equal to the number of the stripping gaps of the corresponding outer circle or inner circle stripping roller group. The spacing between adjacent skin breaking knives matches the outer circle or inner circle stripping roller group. The skin breaking shaft is fixed on the frame. The skin breaking knives are respectively installed on the skin breaking shaft by springs, and the working ends of the skin breaking knives extend into the stripping gaps of the outer circle or inner circle stripping roller by 10mm-15mm.

7. The dual pass peanut red skin shelling machine as claimed in claim 1, wherein: The number of the outer circle extruding rollers is equal to the number of the stripping gaps of the outer circle stripping roller group. The spacing between adjacent outer circle extruding rollers matches the outer circle stripping roller group. The depth of the outer circle extruding roller extending into the outer circle stripping roller is the same as the thickness of the adjacent outer circle stripping roller. The width W4 of the outer circle extruding roller is 8mm-10mm. The spacing between adjacent inner circle extruding rollers matches the inner circle stripping roller group. The depth of the inner circle extruding roller extending into the inner circle stripping roller is the same as the thickness of the adjacent inner circle stripping roller. The width W5 of the inner circle extruding roller is 1mm-2mm.

8. The dual pass peanut red skin shelling machine as claimed in claim 1, wherein: The cleaning wheel is in the shape of a five-pointed star, each five-pointed star angle part corresponds to different stripping gaps of the inner and outer circle stripping wheel groups, the thickness of the five-pointed star angle end piece is less than that of the five-pointed star inner angle near root piece, the five-pointed star angle end piece enters the inner circle stripping wheel gap, the five-pointed star inner angle near root piece enters the outer circle stripping wheel gap, the cleaning wheel shaft is arranged close to the outer circle stripping wheel group to ensure that the five-pointed star inner angle near root piece of the cleaning wheel can clean the red clothes on the outer circle stripping wheel, and the five-pointed star angle end piece can clean the red clothes on the inner circle stripping wheel, the spacing between adjacent cleaning wheels is matched with the stripping wheel group.

9. The dual pass peanut red skin shelling machine as claimed in claim 8, characterized in that: The thickness W6 of the five-pointed star inner angle near root piece is 11mm-13mm, and the thickness W7 of the angle end piece is 3mm-5mm.

10. The dual pass peanut red skin shelling machine as claimed in claim 1, wherein: The power wheel of the first power wheel group is in the same shape as the stripping gap of the outer circle stripping wheel group, and the power wheel of the second power wheel group is in the same shape as the stripping gap of the inner circle stripping wheel group.

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