A peanut kernel red testa removing system and method

Abstract

The application belongs to the technical field of food processing and relates to a peanut kernel red skin removing system and method. The removing system comprises a crusher, a winnowing pipeline, a blower, a first air guide fan and a dust removal system. The discharge port of the crusher is connected with the import end of the winnowing pipeline. The side wall of the winnowing pipeline is provided with an air inlet and a winnowing outlet arranged in an up-down manner. The air inlet and the winnowing outlet are arranged on the two sides of the winnowing pipeline respectively. The dust removal system is connected with the winnowing outlet through a pipeline. The blower is arranged at the air inlet and used for sending air into the winnowing pipeline. The first air guide fan is connected with the tail end of the dust removal system and used for extracting air flow from the winnowing pipeline. The air inlet of the winnowing pipeline is obliquely provided with an air inlet pipe, and the winnowing outlet is provided with a winnowing outlet pipe. The peanut kernel red skin removing system can separate the red skin scraps generated after the peanut kernel is crushed from the peanut kernel, and the red skin scraps are quickly discharged through the dust removal system after being separated, so that the influence of the red skin on the quality of the oil after being pressed is reduced, and the quality of the oil is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a peanut kernel red coat removing system and method, belonging to the technical field of food processing. BACKGROUND

[0002] Peanut is an important oil crop and plays a key role in the production of edible oil. Its structure is mainly composed of three parts: seed coat (usually referred to as red coat), cotyledon and embryo. During transportation and storage, peanut kernels will undergo a series of complex changes due to their own life activities and the influence of external environment. Some of these changes can affect the quality of oilseeds, especially heating and mold growth, which are most likely to cause changes and deterioration of oil quality, and thus affect the composition of fatty acids and the stability of oil during later storage. This is reflected in the following aspects:

[0003] First, under suitable temperature and humidity conditions, mold is easy to breed and reproduce on the surface of peanut kernels, i.e. the red coat, and produce aflatoxin. Aflatoxin is a strong carcinogen. If peanut kernels with aflatoxin are not treated and directly used for oil pressing, the aflatoxin content in the oil will exceed the standard. This not only affects the quality of the oil, but also poses a potential threat to the health of consumers.

[0004] Secondly, during the harvesting, processing and transportation of peanut kernels, equipment such as conveyors and loaders will be needed, and the rubber products in these equipment contain a large amount of plasticizer (phthalate esters). Plasticizers are usually used as plasticizers to increase the flexibility, strength and durability of plastic, rubber and food packaging materials. When peanut kernels come into contact with these rubber products containing plasticizers, a large amount of plasticizers will adhere to the red coat, thereby adversely affecting the quality of the oil.

[0005] In addition, peanut kernels have life activity, and the red coat contains a large amount of enzymes such as lipoxidase and lipase. These enzymes may be activated during the crushing or processing of peanuts, catalyzing the hydrolysis (generating free fatty acids) or oxidation of oil, resulting in an increase in oil acid value.

[0006] Removing the red coat of peanuts can reduce the influence factors such as enzymes, moisture and microorganisms, and can also reduce the content of plastic particles before pressing, thereby indirectly improving the stability of the oil. Therefore, removing the red coat plays an important role in controlling aflatoxin, acid value and plasticizer.

[0007] However, the red skin usually adheres to the peanut kernels, which makes it difficult to remove the red skin. Existing methods for removing the red skin of peanut kernels include wet removal process, dry removal process, and enzymatic removal process, etc. However, these process methods generally have problems such as complex operation, low removal efficiency, affecting the subsequent pressing oil yield of peanut kernels and the quality of oil, etc. For example, the patent application No. 201911133714.9 discloses a method for removing red skin and aspergillus flavus from peanuts. In this application, a wet removal process is used. Although this method can remove the red skin before pressing, it needs to immerse the peanut kernels in a mixed solution for 1 hour. The long soaking time not only reduces the overall production efficiency, but also may cause the peanut kernels to absorb too much water during the soaking process, which changes the properties of the peanut kernels and affects the subsequent pressing oil yield and the quality of the oil.

[0008] Therefore, the present application provides a peanut kernel red skin removal system and method, which aims to remove the red skin of peanut kernels. SUMMARY

[0009] The present application aims to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0010] The technical solution provided by the present application is as follows: a peanut kernel red skin removal system, comprising a crusher, further comprising an air separation pipeline, a blower, a first air induction fan and a dust removal system, the discharge port of the crusher is connected with the inlet end of the air separation pipeline; the side wall of the air separation pipeline is provided with an air inlet and an air separation outlet arranged in an up-down manner, the air inlet and the air separation outlet are respectively arranged on both sides of the air separation pipeline; the dust removal system is connected with the air separation outlet through a pipeline; the blower is arranged at the air inlet and used for sending air into the air separation pipeline; the first air induction fan is connected at the end of the dust removal system and used for extracting air flow from the air separation pipeline.

[0011] Compared with the prior art, the technical solution provided by the present application has the following beneficial effects: when the first air induction fan and the blower are started, the blower sends air into the air separation pipeline, and the first air induction fan provides air flow driving force, so that a spiral air flow is formed in the air separation pipeline from the air inlet to the air separation outlet, the red skin debris with smaller specific gravity will enter the dust removal system from the air separation outlet along the upward air flow, and the peanut kernels with larger specific gravity will continue to be conveyed downward along the air separation pipeline under the action of gravity. Therefore, through the peanut kernel red skin removal system of the present application, the red skin debris generated after the peanut kernels are crushed can be separated from the peanut kernels, the red skin debris is quickly discharged after being separated through the dust removal system, the influence of the surface adhering matter on the quality of the oil after pressing is reduced, and thus the quality of the oil is ensured.

[0012] On the basis of the above technical solution, the present application can also be improved as follows.

[0013] Further, the crusher comprises a crushing and separating unit, the crushing and separating unit comprises a crushing chamber, a first crushing roller and a second crushing roller are arranged in the crushing chamber, a sieve plate is arranged at the lower end of the crushing chamber, air channels are arranged in the first crushing roller and the second crushing roller, a plurality of air injection holes are arranged on the air channels, high-pressure cold air is injected into the air channels through a first cold air pipeline, and the high-pressure cold air is injected out of the air injection holes to cool and blow off the peanut kernels and the red skins during crushing, a gas guide pipe is arranged below the sieve plate, a plurality of air injection nozzles are arranged on the gas guide pipe, high-pressure cold air is introduced into the gas guide pipe through a second cold air pipeline, the first cold air pipeline and the second cold air pipeline are arranged in a cold air input pipeline, and a cold air intelligent adjusting unit is arranged in the cold air input pipeline.

[0014] The purpose of the above further scheme is to spray high-pressure cold air to the crushing roller and the sieve plate through the cold air pipeline, effectively reduce the temperature of the crushing chamber, reduce the oil exudation of peanut kernels and the adhesion of red skins, and blow off the red skins in time through the air flow to avoid secondary extrusion and adhesion, thereby significantly improving the red skin separation effect.

[0015] Further, the crushing and separating unit further comprises a feeding pipeline, the feeding pipeline is fixedly connected to the upper end of the crushing chamber, the first crushing roller and the second crushing roller are rotatably connected to the inner wall of the crushing chamber, the first crushing roller and the second crushing roller are driven by a driving assembly, the driving assembly comprises a large gear and a small gear, the first crushing roller is fixedly connected to the large gear, the second crushing roller is fixedly connected to the small gear, the large gear is engaged with the small gear, the large gear is driven by a crushing motor, the sieve plate is arranged in the crushing chamber in an inclined manner, one end of the sieve plate at a lower height is provided with an opening for discharging materials, the opening is connected to one end of a material elevator, and the other end of the material elevator is connected to the upper end of the crushing chamber.

[0016] Further, the crusher further comprises a cooling and separating unit, the cooling and separating unit comprises the cold air input pipeline, a fruit skin separating assembly and a temperature reduction and sieve promoting assembly are arranged in the cold air input pipeline, the fruit skin separating assembly and the temperature reduction and sieve promoting assembly respectively comprise the first cold air pipeline and the second cold air pipeline, the first cold air pipeline and the second cold air pipeline are fixedly connected in the cold air input pipeline, the first cold air pipeline is above the second cold air pipeline, the first cold air pipeline is communicated with the air channels through a rotary sealing joint, the second cold air pipeline is fixedly connected with the gas guide pipe, and the gas guide pipe is fixedly connected to the inner wall of the crushing chamber.

[0017] Further, the cold air intelligent adjusting unit comprises a first gas collecting pipe, a gas conveying pipe, a first push rod, a second gas collecting pipe and a second push rod, the first gas collecting pipe is fixedly connected to the inner wall of the crushing chamber, the first push rod is slidably connected in the first gas collecting pipe, the upper end of the first push rod is fixedly connected to the lower end surface of the sieve plate, the gas conveying pipe is connected to the bottom of the first gas collecting pipe, the distal end of the gas conveying pipe is fixedly connected to the upper end of the second gas collecting pipe, the lower end of the second gas collecting pipe is provided with an exhaust port, the second push rod is slidably connected in the second gas collecting pipe, the upper end of the second push rod is fixedly connected with a rack, the rack is engaged with an adjusting gear, and the adjusting gear is rotatably connected to the outer wall of the cold air input pipe.

[0018] A circular ring is rotatably connected in the cold air input pipe, the outer periphery of the circular ring is fixedly connected with teeth, the adjusting gear is engaged with the circular ring through the teeth, and a semicircular valve plate is fixedly connected in the circular ring.

[0019] The purpose of the above further scheme is to automatically trigger the cold air intelligent adjusting unit when the sieve plate is blocked, reduce the air volume of the crushing roller and increase the cooling air volume of the sieve plate through mechanical cooperation, dredge the blockage and optimize the energy consumption, and realize the dynamic matching of air volume and working conditions.

[0020] Further, the crusher further comprises a discharging adjusting unit, the discharging adjusting unit comprises a sliding rod, the lower end of the sliding rod is slidably connected to the crushing chamber, the upper end of the sliding rod is fixedly connected to the lower end surface of the sieve plate, a limiting disc is fixedly connected to the sliding rod, a supporting spring is nested on the sliding rod, the supporting spring is located below the limiting disc, and a sleeve is arranged outside the supporting spring, the limiting disc and the sliding rod.

[0021] The upper end surface of the sieve plate is fixedly connected with a top rod, the top rod is hingedly connected with a circular valve plate, and the circular valve plate is rotatably connected in the feeding pipe.

[0022] Further, an air inlet pipe is obliquely arranged at the air inlet of the winnowing pipe, an air outlet pipe is arranged at the winnowing outlet, and the inclination angle α of the air inlet pipe is 15°-35°.

[0023] The vertical distance between the air inlet and the winnowing outlet is 1.2-2 times the diameter of the winnowing pipe.

[0024] The air blower is mounted on the air inlet pipe, and a filter screen is arranged between the air blower and the air inlet pipe, the filter screen is used for uniformly blowing high-pressure gas into the winnowing pipe, so that the high-pressure gas uniformly penetrates the material layer.

[0025] The dust removal system comprises a first cyclone separator, a vibrating separation screen and a first dust remover, the inlet of the first cyclone separator is connected with the winnowing outlet pipe, the gas outlet above the first cyclone separator is connected with the first dust remover through a pipeline, the discharge port below the first cyclone separator is connected with the vibrating separation screen, and the first air blower is arranged at the outlet end of the first dust remover.

[0026] The outlet end of the winnowing pipeline is connected with the roll forming machine for roll sheet processing of the peeled peanut kernels.

[0027] The feeding end of the conveyor is respectively connected with the discharge port of the roll forming machine and the qualified product outlet of the vibrating separation screen.

[0028] The inclination angle α of the air inlet pipe is set to 15-35°, so that the air flow is at an incident angle with the main air flow in the winnowing pipeline, and the air flow collision loss is reduced.

[0029] The filter screen can make the high-pressure gas more evenly distributed when entering the winnowing pipeline, and the uniform air flow can ensure that each part of the material layer receives the same air flow force, avoiding the situation of too strong or too weak air flow in some parts. Too strong air flow may blow out some peanut kernels, causing waste, and too weak air flow cannot effectively separate the red skin debris. The uniform air flow penetrates the material layer, and can more accurately separate the red skin debris and peanut kernels according to the weight difference, improving the separation effect of the red skin debris and peanut kernels and improving the quality of the subsequent pressed oil.

[0030] The first cyclone separator can preliminarily separate the mixed gas discharged from the winnowing outlet, and separate most of the red skin debris and other large particle materials by centrifugal force, and the materials enter the vibrating separation screen through the discharge port below for further processing. The vibrating separation screen can separate peanut kernel debris with qualified indicators, peanut kernel debris with unqualified indicators and red skin debris. The gas discharged from the gas outlet above the first cyclone separator may still contain some fine dust and other impurities. The first dust remover can purify these gases again to effectively remove impurities and ensure that the discharged gas meets environmental protection requirements.

[0031] After the separation of the red skin debris and the peanut kernels is completed, the peeled peanut kernels are directly conveyed to the roll forming machine for roll sheet processing, realizing the continuous processing of peanut kernels. The roll sheet processing can increase the surface area of the peanut kernels, which is beneficial to the more complete exudation of oil in the subsequent pressing process, improving the oil yield. At the same time, the continuous production process reduces the material transfer and storage of intermediate links, reduces the risk of material pollution, further guarantees the quality of the final pressed oil, improves the production efficiency and reduces the production cost.

[0032] The conveyor uniformly conveys peanut pieces processed by the rolling machine and peanut kernel fragments screened by the vibrating separator.

[0033] Further, the feeding system comprises a cylinder screen, a distributing scraper, a second cyclone separator and a second induced draft fan, the cylinder screen, the distributing scraper and the crusher are sequentially connected in series, the second cyclone separator is connected with the cylinder screen and the distributing scraper through pipelines respectively, and the second induced draft fan is connected with the gas outlet above the second cyclone separator; the cylinder screen and the distributing scraper are both provided with hot air inlets for preheating the raw materials by hot air.

[0034] The purpose of the above further scheme is that the cylinder screen can preliminarily screen the raw materials to remove larger impurities such as stones and branches, so as to ensure the purity of the raw materials entering the subsequent equipment and reduce the wear of the equipment. The distributing scraper can uniformly distribute the raw materials into the crusher, so as to ensure that the crusher can work stably and efficiently. The second cyclone separator and the second induced draft fan can collect and treat the dust generated by the cylinder screen and the distributing scraper, so as to avoid the dust from spreading to the surrounding environment and improve the working environment of the production site. Preheating the raw materials by hot air can adjust the moisture content of the raw materials, and the raw materials with appropriate moisture content can help to effectively remove peanut red skin and can also improve the efficiency of the processing equipment and reduce the energy consumption of the equipment. At the same time, the preheating treatment can also kill microorganisms to a certain extent, reduce the influence of microorganisms on the quality of the subsequent pressed oil, and further ensure the quality of the oil. In addition, the physical properties of the preheated raw materials are more stable in the subsequent processing process, which is beneficial to improve the stability of the entire production process and the consistency of the product quality.

[0035] Further, the cold cake system comprises a cold cake machine, a third cyclone separator, a second dust collector and a cooling fan which are sequentially connected in series through pipelines, and the air outlet of the cooling fan is connected with the hot air inlet through a pipeline.

[0036] The purpose of the above further scheme is that the cold cake system cools the pressed peanut cakes, and the cold cake machine can quickly reduce the temperature of the peanut cakes for subsequent storage and transportation. The third cyclone separator and the second dust collector can collect and treat the dust generated in the cold cake process to avoid dust pollution of the environment, and the cooling fan is used to deliver hot air to the hot air inlets of the cylinder screen and the distributing scraper to realize the recycling of heat energy.

[0037] The application also provides a peanut kernel red skin removing method using the peanut kernel red skin removing system, and the steps are as follows:

[0038] S1, raw material pretreatment: start the cylinder screen in the feeding system, introduce the peanut kernel raw material to be processed into the system, after preliminary screening by the cylinder screen, the raw material is distributed and conveyed to the crusher under the action of the distribution scraper, and hot air inlets are arranged on the cylinder screen and the distribution scraper, the air containing residual heat generated in the cold cake system is introduced into the hot air inlet, and the raw material is preheated;

[0039] S2, raw material crushing: the preheated and preliminarily screened raw material enters the crusher, the crusher breaks the peanut kernel into particles through the internal crushing components, so that the connection between the red skin and the peanut kernel becomes loose;

[0040] S3, air separation: the crushed material enters the air separation pipeline from the discharge port of the crusher, the air blower is started, and air is sent into the air separation pipeline, because the air inlet pipe is inclined, the air flow and the main air flow in the air separation pipeline form an incident angle, so that a spiral air flow is formed in the air separation pipeline from the air inlet to the air separation outlet, the red skin debris with small specific gravity can enter the dust removal system from the air separation outlet along the upward air flow, and the peanut kernel with large specific gravity is continuously conveyed downward along the air separation pipeline under the action of gravity;

[0041] S4, dust removal treatment: the mixed gas containing red skin debris entering the dust removal system first enters the first cyclone separator, and the red skin debris is separated out by centrifugal force, the red skin debris enters the vibration separation screen for further treatment through the discharge port below the first cyclone separator, and the gas discharged from the gas outlet above the first cyclone separator enters the first dust remover for further purification;

[0042] S5, embryo rolling treatment: the peeled peanut kernel after red skin separation enters the embryo rolling machine from the outlet end of the air separation pipeline, and the embryo rolling machine rolls the peanut kernel;

[0043] S6, conveying: the conveyor uniformly conveys the peanut pieces treated by the embryo rolling machine and the qualified debris screened by the vibration separation screen.

[0044] The technical scheme provided by the application has the following beneficial effects compared with the prior art:

[0045] The raw materials are pretreated by the cylinder screen and the material distribution scraper in the feeding system, impurities are removed, and the moisture content of the raw materials is adjusted by the preheated air through the hot air inlet, which provides favorable conditions for subsequent processing. The preheated peanut kernels are crushed into particles by the crusher, so that the connection between the red skin and the peanut kernels becomes loose, laying a foundation for subsequent air separation. In the air separation process, the air flow is blown into the air inlet pipe by being inclined, and the spiral air flow is formed with the main air flow in the air separation pipe, effectively realizing the separation of the red skin debris and the peanut kernels. The dust removal system carries out multi-stage separation and purification on the mixed gas containing red skin debris, ensuring that the exhaust gas meets the environmental protection requirements. Finally, the peeled peanut kernels are subjected to embryo rolling treatment and conveying, providing high-quality raw materials for subsequent pressing process. The whole system not only improves the red skin separation efficiency and the oil quality, but also realizes the continuous and automatic production process, reduces the production cost, and improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0047] In the formula, R is a C1-C6 alkyl group, and n is an integer of 1-3.

[0048] Figure 1 The structure diagram of the peanut kernel red skin removal system of the first embodiment of the present application is shown.

[0049] Figure 2 The structure diagram of the peanut kernel red skin removal system of the second embodiment of the present application is shown.

[0050] Figure 3 The structure diagram of the crusher in the present application is shown.

[0051] Figure 4 The structure diagram of the inside of the crushing chamber in the present application is shown.

[0052] Figure 5 The structure diagram of the inside of the crushing chamber in the present application is shown. Figure 4 The enlarged diagram of position A in the present application is shown.

[0053] Figure 6 The enlarged diagram of position B in the present application is shown. Figure 4 The enlarged diagram of position B in the present application is shown.

[0054] Figure 7 The structure diagram of the driving assembly in the present application is shown.

[0055] Figure 8 The structure diagram of the cold air intelligent adjusting unit in the present application is shown.

[0056] Figure 9 Fig. 2 is a schematic view of the enlarged view at C in Fig. 1; Figure 8 Fig. 3 is a schematic view of the enlarged view at D in Fig. 1;

[0057] Figure 10 Fig. 4 is a schematic view of the structure of the cooling separation unit in the present application;

[0058] Figure 11 Fig. 5 is a schematic view of the enlarged view at E in Fig. 1; Figure 10

[0059] Figure 12 Fig. 6 is a schematic view of the structure of the No. 1 gas collecting pipe, gas conveying pipe and No. 1 push rod in the present application;

[0060] Figure 13 Fig. 7 is a schematic view of the enlarged view at F in Fig. 6; Figure 12

[0061] Fig. 8 is a schematic view of the enlarged view at G in Fig. 6;

[0062] 100, crusher; 1, crushing separation unit; 11, crushing chamber; 12, feeding pipe; 13, crushing motor; 14, driving assembly; 141, large gear; 142, small gear; 15, No. 1 crushing roller; 16, No. 2 crushing roller; 17, sieve plate; 18, material lifting machine; 2, cooling separation unit; 21, cold air input pipe; 22, peel separation assembly; 221, No. 1 cold air pipe; 222, air channel; 223, air injection hole; 23, cooling and sieving promoting assembly; 231, No. 2 cold air pipe; 232, air guide pipe; 233, air injection nozzle; 3, cold air intelligent adjusting unit; 31, No. 1 gas collecting pipe; 32, gas conveying pipe; 33, No. 1 push rod; 34, No. 2 gas collecting pipe; 35, rack; 36, adjusting gear; 37, semicircular valve plate; 38, circular ring; 39, tooth; 310, No. 2 push rod; 4, discharging adjusting unit; 41, jacking rod; 42, circular valve plate; 43, sleeve; 44, sliding rod; 45, supporting spring; 46, limiting disc;

[0063] 200, winnowing pipe; 201, air inlet pipe; 202, winnowing outlet pipe; 300, air blower; 401, first cyclone separator; 402, vibrating separation sieve; 403, first dust collector; 404, first induced draft fan; 500, rolling machine; 600, conveyor; 701, cylindrical sieve; 702, material distribution scraper; 703, second cyclone separator; 704, second induced draft fan; 800, hot air inlet; 901, cold cake machine; 902, third cyclone separator; 903, second dust collector; 904, cooling fan. DETAILED DESCRIPTION

[0064] ​​In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0065] Example 1:

[0066] like Figure 1 As shown, a peanut red skin removal system includes a crusher 100, an air separation pipe 200, a first induced draft fan 404 and a dust removal system. The crusher 100 is used to crush peanuts with red skins. The discharge port of the crusher 100 is connected to the inlet end of the air separation pipe 200; the side wall of the air separation pipe 200 is provided with an air inlet and an air separation outlet arranged up and down, the air inlet is located below the air separation outlet and there is a height difference between the two, and the air inlet and the air separation outlet are respectively arranged on both sides of the air separation pipe 200; the dust removal system is connected to the air separation outlet through a pipe; the blower 300 is arranged at the air inlet for supplying air into the air separation pipe 200; the first induced draft fan 404 is connected to the end of the dust removal system for extracting air from the air separation pipe 200.

[0067] When the first induced draft fan 404 and the blower 300 are activated, the blower 300 delivers air into the air separation duct 200, with the first induced draft fan 404 providing the driving force for the airflow. A spiral airflow forms within the air separation duct 200, flowing from the air inlet to the air separation outlet. Red skin debris with a lower specific gravity enters the dust removal system from the air separation outlet along the rising airflow, while the heavier peanut kernels continue to be transported downward along the air separation duct 200 under the action of gravity. The peanut red skin removal system of the present invention can separate the red skin debris produced after the peanuts are crushed from the peanut kernels. After separation, the red skin debris is quickly discharged through the dust removal system, reducing the impact of the red skin on the quality of the oil after pressing, thereby ensuring the quality of the oil. The function of the first induced draft fan 404 is to generate suction to promote airflow and achieve air separation. More specifically, the first induced draft fan 404 can generate negative pressure, or suction, within the air separation duct 200. When the first induced draft fan 404 is working, air will be drawn from the rear of the system, so that the external air will be sucked into the air separation duct 200 from the air inlet, forming an air flow flowing from the air inlet to the air separation outlet. Then, after the peanuts and red clothing fragments enter the air separation duct 200, the red clothing fragments with lighter specific gravity will be driven by the air flow and enter the dust removal system through the air separation outlet, while the peanuts with heavier specific gravity will continue to fall.

[0068] In this embodiment, an air inlet pipe 201 is provided at an angle at the air inlet of the air separation duct 200, and an air separation outlet pipe 202 is provided at the air separation outlet. The inclination angle α of the air inlet pipe 201 ranges from 15° to 35°, which allows the incoming airflow to form an incident angle with the main airflow in the air separation duct 200, thereby reducing airflow counterflow losses. The vertical spacing between the air inlet and the air separation outlet is 1.2 to 2 times the diameter of the air separation duct 200.

[0069] The blower 300 is mounted on the air inlet duct 201, with a filter positioned between them. This filter evenly blows high-pressure gas into the air separation duct 200, ensuring uniform penetration of the material layer. This uniform airflow ensures consistent airflow across all parts of the material layer, preventing areas of excessive or insufficient airflow. Excessive airflow can dislodge some peanut kernels, resulting in waste; while excessively weak airflow cannot effectively separate the peanut kernels from the skins. Uniform airflow through the material layer allows for more precise separation based on the weight difference between the peanut kernels and the skins.

[0070] The dust removal system consists of a first cyclone separator 401, a vibrating separation screen 402, and a first dust collector 403. The inlet of the first cyclone separator 401 is connected to the air separation outlet pipe 202 via a pipe. Its upper air outlet is also connected to the first dust collector 403 via a pipe, while its lower discharge port is connected to the vibrating separation screen 402. A first induced draft fan 404 is located at the outlet of the first dust collector 403.

[0071] The first cyclone separator 401 is responsible for the initial separation of the mixed gas discharged from the air separation outlet. It uses centrifugal force to separate most of the larger particles such as peanut kernel debris. These particles are then fed through the discharge port below to the vibrating separation screen 402 for further processing. The vibrating separation screen 402 further separates peanut kernel debris that meets the required specifications from those that do not, as well as peanut kernel debris and peanut kernel debris that does not meet the required specifications.

[0072] The gas discharged from the upper outlet of the first cyclone separator 401 may still contain some impurities such as fine dust. The first dust collector 403 further purifies this gas to remove impurities and ensure that the discharged gas meets environmental protection requirements. In addition, the first induced draft fan 404 provides power for the entire dust removal system, ensuring that the gas from the air separation outlet can pass smoothly through various devices in the dust removal system.

[0073] The peanut peel removal system also includes a flaking mill 500, connected to the outlet of the air separation duct 200. This mill flaks the peeled peanut kernels. After separating the peeled peanut kernels from the peeled peanut kernels, the peeled peanut kernels are directly conveyed to the flaking mill 500 for flaking, achieving a continuous peanut processing process.

[0074] The peanut kernel red coat removing system further comprises a conveyor 600, the feeding end of the conveyor 600 is connected with the discharge port of the rolling machine 500 and the qualified product outlet of the vibrating separation screen 402 respectively. The conveyor 600 uniformly conveys the peanut kernels processed by the rolling machine 500 and the index qualified peanut kernel fragments screened by the vibrating separation screen 402.

[0075] As shown in the drawings, Figure 3 - Figure 13 In the embodiment, the crusher 100 comprises a crushing separation unit 1, the crushing separation unit 1 comprises a crushing chamber 11, the crushing chamber 11 is provided with a first crushing roller 15 and a second crushing roller 16, the lower end of the crushing chamber 11 is provided with a sieve plate 17, the first crushing roller 15 and the second crushing roller 16 are internally provided with an air channel 222, a plurality of air injection holes 223 are formed on the air channel 222, high-pressure cold air is injected into the air channel 222 through a first cold air pipeline 221 and sprayed out from the air injection holes 223 to cool and blow off the peanut kernels and the red coat during crushing, the lower side of the sieve plate 17 is provided with a gas guide pipe 232, a plurality of air injection nozzles 233 are arranged on the gas guide pipe 232, the gas guide pipe 232 is connected with a second cold air pipeline 231 to introduce high-pressure cold air, the first cold air pipeline 221 and the second cold air pipeline 231 are arranged in a cold air input pipeline 21, and the cold air input pipeline 21 is provided with a cold air intelligent adjusting unit 3;

[0076] The crushing and separating unit 1 further comprises a feeding pipe 12 fixedly connected to the upper end of the crushing chamber 11, the first crushing roller 15 and the second crushing roller 16 are both rotationally connected to the inner wall of the crushing chamber 11, the first crushing roller 15 and the second crushing roller 16 are driven by the driving assembly 14, the driving assembly 14 comprises a large gear 141 and a small gear 142, the first crushing roller 15 is fixedly connected to the large gear 141, the second crushing roller 16 is fixedly connected to the small gear 142, the large gear 141 and the small gear 142 are engaged, the large gear 141 is driven by the crushing motor 13, the screen plate 17 is obliquely arranged in the crushing chamber 11, the lower end of the screen plate 17 is provided with an opening for discharging the material, one end of the material elevator 18 is fixedly connected to the opening, the other end of the material elevator 18 is connected to the upper end of the crushing chamber 11; the crushing motor 13 drives the driving assembly 14 to work, the large gear 141 drives the small gear 142 to rotate, so that the first crushing roller 15 and the second crushing roller 16 rotate to crush the peanut kernels in the feeding pipe 12, it should be noted that, since the number of teeth 39 of the large gear 141 and the small gear 142 is inconsistent, the rotating speed of the first crushing roller 15 and the second crushing roller 16 is different, forming a differential crushing effect, the different rotating speeds can make the material in the roller gap be subjected to the double action of shearing force and extrusion force, improving the crushing efficiency, at the same time, the differential speed can prevent the material from being uniformly accumulated on the roller surface, reducing the risk of blockage. At the same time, the crushed peanut kernels fall onto the screen plate 17, and are screened through the screen plate 17 (due to the work of the crushing motor 13 and the vibration of the whole device, the screening effect can be formed, and the screen plate 17 is obliquely arranged, so that the large peanut kernels are directionally moved), the larger peanut kernels enter the material elevator 18 and are re-conveyed to the crushing chamber 11 for crushing again (the material elevator 18 is prior art, which will not be described in detail here).

[0077] The crusher 100 further comprises a cooling and separating unit 2, which comprises a cold air input pipe 21, the cold air input pipe 21 is provided with a peel separating assembly 22 and a temperature reduction and screening assembly 23, the peel separating assembly 22 and the temperature reduction and screening assembly 23 respectively comprise a first cold air pipe 221 and a second cold air pipe 231, the first cold air pipe 221 and the second cold air pipe 231 are fixedly connected in the cold air input pipe 21, the first cold air pipe 221 is above the second cold air pipe 231, the first cold air pipe 221 and the second cold air pipe 231 divide the cold air input pipe 21 into two parts, the first cold air pipe 221 is communicated through a rotary sealing joint and an air duct 222, the second cold air pipe 231 is fixedly connected with a gas guide pipe 232, and the gas guide pipe 232 is fixedly connected to the inner wall of the crushing chamber 11; high-pressure cold air enters from the cold air input pipe 21, is then shunted into the first cold air pipe 221, and is then sprayed out from a jet hole 223 through the air duct 222, wherein the cold air can reduce the temperature of the first crushing roller 15 and the second crushing roller 16, and simultaneously reduce the temperature in the crushing chamber 11, thereby improving the separation effect of peanut fragments and red skins during crushing (the crushing process generates a lot of heat, which causes peanut fragments to release oil, and red skins to become soft and adhere due to heat, thereby causing adhesion between the peanut fragments and the red skins), and simultaneously blowing the red skins adhered to the side walls of the crushing teeth of the first crushing roller 15 and the second crushing roller 16 away, thereby preventing the red skins from being pressed and adhered to the peanut fragments again during crushing.

[0078] It can be understood that, in the above process, although some red skins have been separated from the peanut fragments, they are still adhered together, so that the red skins are pressed and adhered to the surface of the peanut fragments again when the first crushing roller 15 and the second crushing roller 16 cooperate to shear, and subsequent winnowing cannot separate them. Therefore, the cooling gas sprayed at this time can blow the adhered red skins and peanut fragments apart in the first time of crushing, prevent them from being pressed and adhered more tightly again, and improve the subsequent red skin removal effect.

[0079] Meanwhile, part of the cooling gas enters the gas guide pipe 232 from the second cold air pipe 231, and is then sprayed out from a jet nozzle 233 to the bottom of the sieve plate 17, so as to cool the peanut fragments on the sieve plate 17. Because the peanut fragments are heated by friction during crushing, and are stacked so that the peanut fragments cannot dissipate heat, the cooling gas is needed to cool the peanut fragments and the red skins, so that the peanut fragments and the red skins become crisp and are beneficial to subsequent winnowing separation.

[0080] The cold air intelligent regulating unit 3 includes a No. 1 gas collecting pipe 31, a gas transmission pipe 32, a No. 1 push rod 33, a No. 2 gas collecting pipe 34 and a No. 2 push rod 310. The No. 1 gas collecting pipe 31 is fixedly connected to the inner wall of the crushing chamber 11. The No. 1 gas collecting pipe 31 includes a No. 1 push rod 33, which is slidably connected to the No. 1 gas collecting pipe 31. The upper end of the No. 1 push rod 33 is fixedly connected to the lower end of the sieve plate 17. The gas transmission pipe 32 is connected to the bottom of the No. 1 gas collecting pipe 31, and the distal end of the gas transmission pipe 32 is fixedly connected to the No. 2 gas collecting pipe 34. The upper end of the No. 2 air collecting pipe 34 is provided with an exhaust port at the lower end. The No. 2 push rod 310 is slidably connected to the No. 2 air collecting pipe 34. The upper end of the No. 2 push rod 310 is fixedly connected to the rack 35, and the rack 35 is engaged with the adjusting gear 36. The adjusting gear 36 is rotatably connected to the outer wall of the cold air input pipe 21; a circular ring 38 is rotatably connected to the cold air input pipe 21, and teeth 39 are fixedly connected to the outer periphery of the circular ring 38. The adjusting gear 36 is engaged with the circular ring 38 through the teeth 39, and a semicircular valve plate 37 is fixedly connected to the circular ring 38.

[0081] In the initial state, such as Figure 9 As shown, the semicircular valve plate 37 blocks half of the No. 1 cold air duct 221 and the No. 2 cold air duct 231 respectively. When the peanut crushed particles on the sieve plate 17 are blocked and accumulated too much, the sieve plate 17 moves downward under the pressure of the peanut crushed particles. At this time, the sieve plate 17 drives the No. 1 push rod 33 to slide downward in the No. 1 gas collecting pipe 31, squeezing the gas from the gas transmission pipe 32 into the upper chamber of the No. 2 gas collecting pipe 34. Then, the No. 2 push rod 310 slides downward, driving the rack 35 downward, and the rack 35 drives the adjustment gear 36 to rotate clockwise (refer to Figure 9 ), the adjusting gear 36 drives the ring 38 to rotate counterclockwise, and at the same time drives the semicircular valve plate 37 to rotate counterclockwise. When the semicircular valve plate 37 rotates counterclockwise, the air volume of the No. 1 cold air duct 221 decreases, and the air volume of the No. 2 cold air duct 231 increases. This is because when the sieve plate 17 is blocked, the amount of peanut crushed material blocked on the sieve plate 17 is large, requiring more cooling gas for cooling. At the same time, the amount of peanut crushed material blocked on the sieve plate 17 also increases. The sieve plate 17 is close to the air nozzle 233. At this time, the air volume of the air nozzle 233 increases, which can blow the peanut crushed material blocked on the sieve plate 17 upward, and cooperate with the vibration of the device to improve the screening effect and clear the blockage. It should also be noted that when the sieve plate 17 is blocked, the discharge amount of the feed pipe 12 is reduced. At this time, the cooling amount required for the crushing chamber 11, the No. 1 crushing roller 15 and the No. 2 crushing roller 16 is reduced, so the air volume of the No. 1 cold air duct 221 can be reduced.

[0082] According to the above scheme, it can be clear that the descending distance of the screen plate 17 is determined by the degree of the screen plate 17 being blocked, so as to control the amount of gas input into the second gas collecting pipe 34 from the gas conveying pipe 32, and then control the distance of the rack 35 rising and falling, and finally control the deflection angle of the semicircular valve plate 37, so as to adjust the air volume of the first cold air pipe 221 and the second cold air pipe 231 to match the current working scene, thereby having the function of dynamic adjustment.

[0083] The crusher 100 further comprises a discharging adjusting unit 4, the discharging adjusting unit 4 comprises a sliding rod 44, the lower end of the sliding rod 44 is slidingly connected with the crushing chamber 11, the upper end of the sliding rod 44 is fixedly connected with the lower end surface of the screen plate 17, a limiting disc 46 is fixedly connected on the sliding rod 44, a supporting spring 45 is nested on the sliding rod 44, the supporting spring 45 is located below the limiting disc 46, and the supporting spring 45, the limiting disc 46 and the sliding rod 44 are externally provided with a sleeve 43; the upper end surface of the screen plate 17 is fixedly connected with a top rod 41, the top rod 41 is hingedly connected with a circular valve plate 42, and the circular valve plate 42 is rotationally connected in the feeding pipe 12.

[0084] When the screen plate 17 is blocked, the screen plate 17 descends, the sliding rod 44 slides downward and compresses the supporting spring 45, at the same time, the top rod 41 connected with the upper end surface of the screen plate 17 moves downward and pulls the circular valve plate 42 to deflect (the initial state of the circular valve plate 42 is shown in FIG. 2), so that the discharging area of the feeding pipe 12 is reduced, thereby reducing the discharging speed to match the current scene that needs to be dredged. Figure 4 When the blockage is more serious, the descending range of the screen plate 17 is larger, so that the deflection angle of the circular valve plate 42 is larger, so that the discharging area of the feeding pipe 12 is smaller and the discharging is slower, so that the screen plate 17 has enough time to dredge, thereby having the function of dynamically adjusting the discharging speed.

[0085] Embodiment two:

[0086] Different from embodiment one, as Figure 2As shown, in the present embodiment, the peanut kernel red skin removing system further comprises a feeding system, the feeding system comprising a cylinder screen 701, a distributing scraper 702, a second cyclone separator 703 and a second induced draft fan 704, the cylinder screen 701, the distributing scraper 702 and the crusher 100 being connected in series, the second cyclone separator 703 being connected with the cylinder screen 701 and the distributing scraper 702 through pipes respectively, and the second induced draft fan 704 being connected with the air outlet above the second cyclone separator 703. The cylinder screen 701 can preliminarily screen the raw materials to remove larger impurities such as stones and branches, so as to ensure the purity of the raw materials entering the subsequent equipment and reduce the abrasion of the equipment. The distributing scraper 702 can uniformly distribute the raw materials into the crusher 100. The second cyclone separator 703 and the second induced draft fan 704 can collect and treat the dust generated by the cylinder screen 701 and the distributing scraper 702, so as to avoid the dust from spreading to the surrounding environment.

[0087] The cylinder screen 701 and the distributing scraper 702 are both provided with hot air inlets 800 for introducing hot air to preheat the raw materials, so as to reduce the moisture content of the raw materials and kill part of the microorganisms attached to the surface of the raw materials to a certain extent.

[0088] The peanut kernel red skin removing system further comprises a cold cake system, the cold cake system comprising a cold cake machine 901, a third cyclone separator 902, a second dust remover 903 and a cooling fan 904 connected in series through pipes, and the air outlet of the cooling fan 904 being connected with the hot air inlet 800 through a pipe. The cold cake system cools the pressed peanut cake, and the cold cake machine 901 can quickly reduce the temperature of the peanut cake, so as to facilitate the subsequent storage and transportation. The third cyclone separator 902 and the second dust remover 903 can collect and treat the dust generated in the cold cake process, so as to avoid dust pollution of the environment, and the cooling fan 904 is used to deliver hot air to the hot air inlets 800 of the cylinder screen 701 and the distributing scraper 702, so as to realize the recycling of heat energy.

[0089] In the present embodiment, the peanut kernel red skin removing system is used to realize the method of removing the red skin of peanut kernels, which comprises the following steps:

[0090] S1, raw material pretreatment: the cylinder screen 701 in the feeding system is started to introduce the peanut kernel raw materials to be treated into the system. The cylinder screen 701 preliminarily screens the raw materials through its rotation and screen hole effect, and the clean raw materials screened by the cylinder screen 701 are uniformly distributed and transported to the crusher 100 under the action of the distributing scraper 702. The hot air inlets 800 are arranged on the cylinder screen 701 and the distributing scraper 702, and at this time, the air containing residual heat generated in the cold cake system is introduced to preheat the raw materials.

[0091] S2, raw material crushing: the raw material after preliminary screening and preheating enters the crusher 100, and the crusher 100 breaks the peanut kernels into particles of appropriate size through the internal crushing components, so that the connection between the red skin and the peanut kernels becomes loose, thereby creating favorable conditions for subsequent red skin separation.

[0092] S3, air separation: the crushed material enters the air separation pipeline 200 from the discharge port of the crusher 100. At this time, the air blower 300 installed on the air inlet pipe 201 starts to work and sends air into the air separation pipeline 200. Due to the inclined arrangement of the air inlet pipe 201, the inclination angle a is 15°-35°, the air flow is incident at an angle with the main air flow in the air separation pipeline 200, which reduces the air flow collision loss, and a spiral air flow is formed in the air separation pipeline 200 from the air inlet to the air separation outlet. The red skin debris with smaller specific gravity will enter the dust removal system from the air separation outlet along the upward air flow, and the peanut kernels with larger specific gravity will continue to be transported downward along the air separation pipeline 200 under the action of gravity, thereby realizing effective separation of the red skin debris and the peanut kernels.

[0093] S4, dust removal treatment: the mixed gas of red skin debris entering the dust removal system first enters the first cyclone separator 401, and most of the red skin debris and other large particle materials are separated out by centrifugal force and enter the vibrating separation screen 402 through the lower discharge port. In the vibrating separation screen 402, the red skin debris, qualified peanut fragments and unqualified peanut fragments are effectively separated, the qualified peanut fragments are transported to the next process together with the peanut pieces treated by the rolling machine 500, and the red skin debris and the unqualified peanut fragments are collected separately. In addition, some fine dust and other impurities may still be contained in the gas discharged from the upper air outlet of the first cyclone separator 401, and these gases enter the first dust remover 403 for further purification, and the fine impurities are discharged from the bottom outlet of the first dust remover 403, so as to ensure that the gas discharged from the air outlet of the first dust remover 403 meets the environmental protection requirements.

[0094] S5, rolling treatment: the peeled peanut kernels after red skin separation enter the rolling machine 500 from the outlet end of the air separation pipeline 200. The rolling machine 500 rolls the peanut kernels to increase the surface area of the peanut kernels. In the subsequent pressing process, the larger surface area is beneficial to the more complete exudation of oil, thereby improving the oil yield and production efficiency.

[0095] S6, conveying and subsequent treatment: the peanut pieces treated by the rolling machine 500 and the qualified peanut fragments separated by the vibrating separation screen 402 are uniformly conveyed to the conveyor 600.

[0096] The application effect data of the peanut kernel red skin removal system of the present application are shown in the following table:

[0097]

[0098] From the "percentage of selected components" data, it can be seen that under different production batches, the system can effectively separate a high proportion of red skin and other components, making the remaining raw materials for subsequent pressing more pure. For example, in serial number 4, the percentage of selected components reached 64.5%.

[0099] In the "peanut kernel plasticizer content" related data, the average reduction percentage of plasticizer in the air-separated peanuts is 20.8%. Plasticizers (phthalates) are commonly used as plasticizers to increase the flexibility, strength, and durability of plastic products such as plastics, rubbers, and food packaging materials. The plasticizer in peanut kernels is generally derived from storage and transportation processes, such as the migration of rubber products such as conveyer belts, loaders, and other rubber products. Through the peanut kernel red skin removal system of the present invention, the plasticizer in the peanut raw material can be removed along with the fine impurities, thereby effectively reducing the content of plasticizer in peanuts and reducing the risk of product unqualification due to excessive plasticizer.

[0100] The "peanut kernel acid value" related data shows that the average reduction percentage of acid value in air-separated peanuts is 12.1%. The reduction of acid value indicates that the oxidation degree of oil in the subsequent pressing process is reduced, reducing the additional processing procedures for reducing acid value, improving production efficiency, and also improving the quality stability of oil.

[0101] The "peanut kernel aflatoxin content" related data shows that the average reduction percentage of aflatoxin in air-separated peanuts is 36.5%. Aflatoxin is a strong carcinogen, and its significant reduction significantly improves the safety of peanut raw materials, making the final produced oil of higher quality and more in line with food safety standards, improving the market competitiveness of the product.

[0102] Before pressing, peanut kernels need to be crushed to improve oil yield. During the crushing process of peanut kernels, peanut red skin is caused to fall off, and the crushed and fallen peanut red skin is separated from cotyledon and germ. After that, it is processed through a cyclone separator recovery, screening, and other processes. The peanut kernel after removing the red skin can effectively reduce the aflatoxin of the raw material and improve the quality of crude oil. The present invention can also recover the peanut powder brought out during the removal of the red skin, reduce the waste of raw materials, and ensure that the dust concentration discharged to the outdoor is <8 mg / m³, meeting the environmental protection requirements; the crusher 100 and the germ roller 500 operate under micro-negative pressure conditions, without dust leakage, ensuring that the dust concentration in the production environment is effectively controllable.

[0103] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A peanut peeling removal system, comprising a crusher (100), characterized in that: It also includes an air separation duct (200), a blower (300), a first induced draft fan (404) and a dust removal system, wherein the discharge port of the crusher (100) is connected to the inlet end of the air separation duct (200); the side wall of the air separation duct (200) is provided with an air inlet and an air separation outlet arranged up and down, and the air inlet and the air separation outlet are respectively arranged on both sides of the air separation duct (200); the dust removal system is connected to the air separation outlet through a pipeline; the blower (300) is arranged at the air inlet, and the blower (300) is used to supply air into the air separation duct (200); the first induced draft fan (404) is connected to the end of the dust removal system and is used to extract air from the air separation duct (200); The crusher (100) includes a crushing and separation unit (1), the crushing and separation unit (1) includes a crushing chamber (11), a first crushing roller (15) and a second crushing roller (16) are provided in the crushing chamber (11), a screen plate (17) is provided at the lower end of the crushing chamber (11), an air duct (222) is provided inside the first crushing roller (15) and the second crushing roller (16), a plurality of air injection holes (223) are provided on the air duct (222), and air is injected into the air duct (222) through the first cold air duct (221). After the high-pressure cold air enters, it is ejected from the jet hole (223) to cool and blow away the crushed peanuts and the peanut skin. An air guide pipe (232) is provided below the sieve plate (17). A plurality of air nozzles (233) are provided on the air guide pipe (232). The air guide pipe (232) is passed through the second cold air duct (231). The first cold air duct (221) and the second cold air duct (231) are both provided in the cold air input duct (21). The cold air input duct (21) is provided with a cold air intelligent adjustment unit (3).

2. The peanut red skin removal system according to claim 1, characterized in that: The crushing and separation unit (1) further comprises a feed pipe (12), wherein the feed pipe (12) is fixedly connected to the upper end of the crushing chamber (11), the first crushing roller (15) and the second crushing roller (16) are both rotatably connected to the inner wall of the crushing chamber (11), the first crushing roller (15) and the second crushing roller (16) are driven by a drive assembly (14), wherein the drive assembly (14) comprises a large gear (141) and a small gear (142), and the first crushing roller (15) and the large gear (141) are connected to each other. 41) is fixedly connected, the second crushing roller (16) and the small gear (142) are fixedly connected, the large gear (141) and the small gear (142) are meshed, the large gear (141) is driven by the crushing motor (13), the screen plate (17) is tiltedly arranged in the crushing chamber (11), and the lower end of the screen plate (17) is provided with an opening for material discharge, the opening is connected to one end of the material hoist (18), and the other end of the material hoist (18) is connected to the upper end of the crushing chamber (11).

3. The peanut red skin removal system according to claim 1, characterized in that: The crusher (100) further includes a cooling and separating unit (2), the cooling and separating unit (2) including the cold air input duct (21), the cold air input duct (21) being provided with a peel separation component (22) and a cooling and screening component (23), the peel separation component (22) and the cooling and screening component (23) respectively including the first cold air duct (221) and the second cold air duct (231), the first cold air duct (221) and the second cold air duct (231) being fixedly connected in the cold air input duct (21), the first cold air duct (221) being above the second cold air duct (231), the first cold air duct (221) being connected to the air duct (222) via a rotary sealing joint, the second cold air duct (231) and the air guide duct (232) being fixedly connected, and the air guide duct (232) being fixedly connected to the inner wall of the crushing chamber (11).

4. The peanut red skin removal system according to claim 1, characterized in that: The cold air intelligent regulating unit (3) comprises a No. 1 gas collecting pipe (31), a gas transmission pipe (32), a No. 1 push rod (33), a No. 2 gas collecting pipe (34) and a No. 2 push rod (310), wherein the No. 1 gas collecting pipe (31) is fixedly connected to the inner wall of the crushing chamber (11), the No. 1 push rod (33) is slidably connected in the No. 1 gas collecting pipe (31), the upper end of the No. 1 push rod (33) is fixedly connected to the lower end surface of the sieve plate (17), and the gas transmission pipe (32) is connected to the No. 1 gas collecting pipe (34). The bottom of the gas collecting pipe (31), the distal end of the gas transmission pipe (32) is fixedly connected to the upper end of the No. 2 gas collecting pipe (34), the lower end of the No. 2 gas collecting pipe (34) is provided with an exhaust port, the No. 2 push rod (310) is slidably connected in the No. 2 gas collecting pipe (34), the upper end of the No. 2 push rod (310) is fixedly connected to a rack (35), the rack (35) is meshed with an adjusting gear (36), and the adjusting gear (36) is rotatably connected to the outer wall of the cold air input pipe (21); A circular ring (38) is rotatably connected inside the cold air input duct (21), and teeth (39) are fixedly connected to the periphery of the circular ring (38). The regulating gear (36) is meshed with the circular ring (38) through the teeth (39), and a semicircular valve plate (37) is fixedly connected inside the circular ring (38).

5. The peanut red skin removal system according to claim 2, characterized in that: The crusher (100) further includes a material discharge adjustment unit (4), the material discharge adjustment unit (4) including a sliding rod (44), the lower end of the sliding rod (44) being slidably connected to the crushing chamber (11), the upper end of the sliding rod (44) being fixedly connected to the lower end surface of the screen plate (17), the sliding rod (44) being fixedly connected to a limit plate (46), the sliding rod (44) being nested with a support spring (45), the support spring (45) being located below the limit plate (46), and the support spring (45), the limit plate (46) and the sliding rod (44) being provided with a sleeve (43) on the outside; The upper end surface of the sieve plate (17) is fixedly connected to a push rod (41), the push rod (41) and a circular valve plate (42) are hinged, and the circular valve plate (42) is rotatably connected in the feed pipe (12).

6. The peanut red skin removal system according to claim 1, characterized in that: An air inlet pipe (201) is provided at an angle at the air inlet of the air separation pipe (200), and an air separation outlet pipe (202) is provided at the air separation outlet. The inclination angle α of the air inlet pipe (201) is 15° to 35°; the vertical distance between the air inlet and the air separation outlet is 1.2 to 2 times the diameter of the air separation pipe (200); The blower (300) is installed on the air inlet pipe (201), and a filter is provided between the blower (300) and the air inlet pipe (201), and the filter is used to evenly blow high-pressure gas into the air separation pipe (200); The dust removal system comprises a first cyclone separator (401), a vibrating separation screen (402) and a first dust collector (403); the inlet of the first cyclone separator (401) is connected to the air separation outlet pipe (202); the air outlet above the first cyclone separator (401) is connected to the first dust collector (403) through a pipeline; the discharge port below the first cyclone separator (401) is connected to the vibrating separation screen (402); and the first induced draft fan (404) is arranged at the outlet end of the first dust collector (403); The outlet end of the air separation pipeline (200) is connected to a flaking machine (500) for flaking the peeled peanut kernels; The feed end of the conveyor (600) is respectively connected to the discharge port of the flaking machine (500) and the qualified product outlet of the vibrating separation screen (402).

7. The peanut red skin removal system according to claim 6, characterized in that: The device further comprises a feeding system, the feeding system comprising a cylindrical screen (701), a material distribution scraper (702), a second cyclone separator (703) and a second induced draft fan (704), the cylindrical screen (701), the material distribution scraper (702) and the crusher (100) being sequentially connected in series, the second cyclone separator (703) being connected to the cylindrical screen (701) and the material distribution scraper (702) via pipelines, and the second induced draft fan (704) being connected to an air outlet above the second cyclone separator (703); The cylindrical screen (701) and the material-distributing scraper (702) are both provided with a hot air inlet (800) for introducing hot air to preheat the raw materials.

8. The peanut red skin removal system according to claim 7, characterized in that: It also includes a cold cake system, which includes a cold cake machine (901), a third cyclone separator (902), a second dust collector (903) and a cooling fan (904) connected in series via a pipeline, and an air outlet of the cooling fan (904) is connected to the hot air inlet (800) via a pipeline.

9. A method for removing red skin from peanuts, using the peanut red skin removal system according to claim 8, characterized in that: Here are the steps: S1. Raw material pretreatment: The cylindrical screen (701) in the feeding system is started to introduce the peanut raw material to be processed into the system. After preliminary screening by the cylindrical screen (701), the raw material is distributed and conveyed to the crusher (100) under the action of the material distribution scraper (702). Hot air inlets (800) are provided on both the cylindrical screen (701) and the material distribution scraper (702). Air containing waste heat generated in the cold cake system is introduced into the hot air inlet (800) to preheat the raw material. S2, raw material crushing: the raw materials after preheating and preliminary screening enter the crusher (100), and the crusher (100) crushes the peanuts into particles through the internal crushing components, so that the connection between the peanut skin and the peanut kernel becomes loose; S3, air separation: The crushed material enters the air separation pipe (200) from the discharge port of the crusher (100), and the blower (300) is started to blow air into the air separation pipe (200). Since the air inlet pipe (201) is inclined, the blown air flow and the main air flow in the air separation pipe (200) are at an incident angle, so that a spiral air flow is formed in the air separation pipe (200) from the air inlet to the air separation outlet. The peanut kernels with a small specific gravity will enter the dust removal system from the air separation outlet with the rising air flow, while the peanut kernels with a large specific gravity will continue to be transported downward along the air separation pipe (200) under the action of gravity; S4, dust removal: The mixed gas containing red clothes debris entering the dust removal system first enters the first cyclone separator (401), where the red clothes debris is separated by centrifugal force. The red clothes debris enters the vibrating separation screen (402) through the discharge port below the first cyclone separator (401) for further treatment. The gas discharged from the air outlet above the first cyclone separator (401) enters the first dust collector (403) for further purification. S5, flaking: the peeled peanut kernels after the red skin is separated enter the flaking machine (500) from the outlet end of the air separation pipe (200), and the flaking machine (500) flaks the peanut kernels; S6. Conveying: The conveyor (600) uniformly conveys the peanut flakes processed by the flaking machine (500) and the qualified debris screened by the vibrating separation screen (402).

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