A black peanut food production device capable of switching between a fragrant brine and a boiled flavor

Abstract

The present application belongs to the technical field of food processing, and discloses a black peanut food production device capable of switching between a fragrant brine flavor and a boiled flavor, which comprises a boiled tank, an inner tank, an oil cavity, a shunt shell, a flap valve, a buffer chute, a rotary platform, a plurality of sealed impregnation barrels, a power assembly, a heating assembly, an airflow assembly, an air pump, a conductive slip ring, a hollow support, an air cavity and a sealing cover plate. The inner tank is arranged inside the boiled tank, and an oil cavity filled with mineral heat-conducting oil is formed between the two. The bottom of the boiled tank is connected with the shunt shell and is divided into two discharge routes by the flap valve. One route directly produces boiled products, and the other route connects with a rotary brining unit through the buffer chute. A plurality of sealed impregnation barrels are arranged on the rotary platform and are driven to rotate intermittently by the power assembly. The boiled and fragrant brine dual-flavor flexible production is realized by switching the flap valve. The mechanical stirring is replaced by bubble circulation to reduce the damage to the seed coat. The rotary air circuit and the electric circuit are stably and reliably connected.

Description

Technical Field

[0001] This invention belongs to the field of food processing technology, specifically relating to a black peanut food production device that can switch between braised and boiled flavors. Background Technology

[0002] Black peanuts, a specialty agricultural product rich in anthocyanins, selenium, and various amino acids, have seen their processed products gain increasing attention in the snack food market in recent years. Boiled peanuts and braised peanuts are two common processed flavors of black peanuts. Boiled peanuts retain more of the peanut's natural aroma and nutrients, with a soft, glutinous, and mild taste; braised peanuts, on the other hand, are marinated in a braising liquid, giving them a richer flavor profile and making them suitable as a side dish or a snack.

[0003] Currently, the boiling and braising processes of black peanuts are mostly carried out using a separate production method, meaning that the boiling and braising processes are completed in independent boiling pots or braising equipment. For processing enterprises that produce two flavored products simultaneously, it is usually necessary to configure two separate sets of processing equipment to complete the boiling and braising processes separately. The initial investment cost of the equipment is relatively high, and each set of equipment is equipped with its own heating, temperature control, and discharge mechanisms, which requires a large area, and there is room for further improvement in energy efficiency. When the production plan switches between the two flavors, it is also necessary to clean the tanks and pipelines used in the previous batch, and the switching process is relatively time-consuming.

[0004] In terms of processing technology, black peanuts have relatively thin seed coats rich in anthocyanins. During boiling and braising, they are easily affected by factors such as high-temperature and violent boiling, mechanical stirring and collision, and sudden pressure changes, resulting in seed coat cracking and detachment, which in turn affects the appearance quality and nutritional retention of the finished product. Some existing braising equipment has stirring blades or guide baffles inside the tank to ensure even flavoring. These internal components are prone to scraping and colliding with the peanuts during operation, which to some extent exacerbates seed coat damage. At the same time, the presence of these internal components increases the difficulty of cleaning the equipment and is not conducive to food hygiene management. Summary of the Invention

[0005] In view of the problems mentioned in the background art, the purpose of the present invention is to provide a black peanut food production device that can switch between braised and boiled flavors.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A black peanut food production device that can switch between braised and boiled flavors includes a boiling tank, an inner tank coaxially mounted inside the boiling tank, an oil cavity formed between the inner wall of the boiling tank and the outer wall of the inner tank, and mineral heat-conducting oil is injected into the oil cavity; The bottom of the boiling tank is connected to a diversion shell. The input end of the diversion shell is connected to the bottom of the inner tank. The diversion shell is equipped with a first butterfly valve and a flap valve. The output end of the diversion shell is divided into a first discharge port and a second discharge port. The input ends of the first discharge port and the second discharge port are controlled by the flap valve. The first discharge port is connected downward to the boiled product collection channel. The second discharge port is connected to an inclined buffer chute. The output end of the buffer chute is connected to the feeding station of the rotary braising unit. The output end of the buffer chute is equipped with a second butterfly valve. The rotary brining unit includes a rotary platform and multiple sealed impregnation cylinders fixedly installed on the rotary platform. The bottom of the rotary platform is connected to a power component that drives it to rotate intermittently. A third butterfly valve is installed at the input end of the sealed impregnation cylinder, and a fourth butterfly valve is installed at the output end of the sealed impregnation cylinder. Both the inner tank and the sealed impregnation cylinder are equipped with a drain pipe, a heating component, an airflow component, and a one-way air valve. The drain pipe is used to drain the liquid. The working end of the heating component acts on the mineral heat transfer oil in the oil chamber. The airflow component is a ring pipe with uniform air holes. The output end of the one-way air valve is outside the inner tank and the sealed impregnation cylinder. The power source of the airflow components in both the inner tank and the sealed impregnation cylinder is an air pump. The air pump is installed at a non-interference position in the center of the rotary platform. The rotary platform is equipped with a conductive slip ring, the output end of which is connected to the heating component. The rotary platform is equipped with a hollow support, and the air pump is installed on the upper side of the hollow support. The hollow support has an annular opening, and an air chamber is rotatably installed on the annular opening. The output end of the air chamber is connected to the input ends of all the airflow components on the sealed impregnation cylinder through a pipe. A sealing cover is rotatably installed on the top of the air chamber, and the sealing cover is integrally connected to an air pipe connected to the output end of the air pump.

[0007] Furthermore, a guide channel is installed on the lower side of the rotary platform, with the input end of the guide channel directly below the output end of the sealed impregnation cylinder. This allows for the unified collection and guidance of the discharged brine and rinsing water, preventing liquid from splashing everywhere, keeping the surrounding environment of the equipment clean, and facilitating the recovery and centralized treatment of the brine.

[0008] Furthermore, the inner tank and the sealed impregnation cylinder are provided with negative pressure connection ports, which are located above the liquid surface. The negative pressure connection ports and the airflow assembly cannot operate simultaneously. When one of them is running, the other is in a state of air path cutoff. This can prevent the airflow assembly from entering and disrupting the negative pressure environment when vacuuming, and at the same time prevent leakage of the negative pressure interface during aeration, ensuring stable operation of each of the two working conditions.

[0009] Further defined, the bottom surface of the buffer chute is an inclined surface sloping towards the output end, and a floating connector is installed at the output end of the buffer chute. The contact surface between the floating connector and the input end of the sealed impregnation cylinder is an inclined surface. When the floating connector contacts the input end of the sealed impregnation cylinder, it moves upward and then springs back to insert into the sealed impregnation cylinder. The movement stroke of the floating connector is not within the operating range of the second butterfly valve and the third butterfly valve, realizing automatic insertion and sealing with the input end of the cylinder. No additional lifting drive mechanism is required. The structure is simple and can compensate for the slight positioning deviation of the rotary platform, ensuring the sealing of the feeding docking.

[0010] Furthermore, the drain pipe is equipped with a valve body and is normally closed. The inlet end of the drain pipe is equipped with a filter plate, which can quickly empty the liquid in the tank when needed, prevent peanut particles from clogging the pipe or causing material loss when discharged with the liquid, and avoid the peanuts being squeezed and broken by the valve body during the drainage process.

[0011] Furthermore, the air holes on the annular tube in the airflow assembly face downwards, and the diameter of the air holes is no more than half a centimeter, which can generate fine and uniform rising bubbles. As the bubbles rise, they drive the liquid to circulate slowly, and the disturbance is gentle and not violent, which reduces the impact on the black peanut seed coat while achieving uniform mixing of materials.

[0012] Furthermore, the power assembly is equipped with an encoder, which can provide real-time feedback on the rotation angle and station position of the rotary platform, realize closed-loop positioning control, improve the positioning accuracy of intermittent rotation of multiple stations, reduce cumulative errors, and ensure accurate docking of each material cylinder with the feeding and discharging stations.

[0013] Furthermore, the inner walls and bottom surfaces of the inner tank and the sealed impregnation cylinder are continuous smooth arc surfaces without any stirring ribs, baffles, or welded protrusions. This eliminates the risk of the material being scratched by hard structures during the turning process, which helps to protect the integrity of the black peanut seed coat. At the same time, the smooth inner walls are easy to rinse and clean, reducing material residue and unsanitary corners.

[0014] Furthermore, the heating component includes a temperature sensor for detecting the real-time temperature of the mineral heat transfer oil and feeding back to control the on / off state of the heating component, so as to maintain constant temperature heat exchange between the inner tank and the sealed impregnation cylinder, reduce local overheating or underheating caused by temperature fluctuations, ensure the consistency of boiling and braising temperatures, and improve product quality stability.

[0015] Further, it also includes an electrical control system, which is electrically connected to the first butterfly valve, the flap valve, the second butterfly valve, the third butterfly valve, the fourth butterfly valve, the air pump, and the heating component. The electrical control system has three built-in working modes: full-volume boiling, full-volume braising, and parallel operation of two production lines. Each valve body, the air pump, and the heating component operate in a preset sequence, which can switch between full-volume boiling, full-volume braising, or parallel operation of two production lines according to production needs. The components operate in a preset sequence, reducing manual operation and improving the degree of production automation and operational reliability.

[0016] The beneficial effects of using the present invention are as follows: This device integrates pre-cooking in water and immersion in brine into the same set of equipment. After pre-cooking, the water tank can be directly discharged or transported to the rotary brine unit through the diversion shell, eliminating the need for two separate cooking and brine equipment, thus reducing equipment procurement costs and floor space. Both the water tank and the sealed immersion cylinder use mineral heat transfer oil as the heating medium, which helps to improve energy utilization efficiency.

[0017] This device achieves gentle mixing of materials by setting a downward-facing, finely perforated annular tube at the bottom of the tank, allowing air bubbles to rise and drive the liquid circulation, replacing traditional stirring blades. At the same time, the inner wall of the tank is smooth without protrusions, and a barrier filter plate is set at the drain pipe inlet, reducing the scraping and collision between peanuts and hard components at multiple stages, which helps to reduce the damage rate of black peanut seed coats and improve the appearance quality of the finished product.

[0018] In this invention, the diversion shell can quickly switch the material flow through the flap valve, realizing flexible allocation of boiled finished products to be directly discharged or enter the braising unit. The boiling and braising processes are relatively independent in space, reducing the cross contact between the two flavor media, reducing the risk of cross-contamination, and eliminating the need for large-scale cleaning of the entire equipment when switching production.

[0019] The power components of the rotary platform are equipped with encoders to achieve closed-loop positioning. Combined with the automatic compensation plugging of the floating connector, it can ensure the accuracy and sealing of the docking at each station. The air circuit achieves rotational air supply through the rotational sealing structure of the air chamber and the sealing cover plate, and the circuit achieves rotational power supply through conductive slip rings, avoiding the entanglement of pipes and cables, which is conducive to the long-term stable operation of the equipment.

[0020] The electronic control system of this invention uniformly manages the timing actions of various butterfly valves, flap valves, air pumps and heating components. It has three built-in working modes that can be flexibly selected according to production needs, reducing manual intervention and helping to improve production efficiency and product quality consistency.

[0021] The device's rotating platform allows for the independent operation of multiple sealed soaking cylinders, enabling the filling of different brines into these cylinders to achieve the purpose of braising peanuts with different flavors. Attached Figure Description

[0022] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of an embodiment of a black peanut food production device that can switch between braised and boiled flavors according to the present invention. Figure 2 This is a partial cross-sectional schematic diagram of an embodiment of a black peanut food production device of the present invention that can switch between braised and boiled flavors. The symbols for the main components are explained below: 1. Water boiling tank; 2. Inner tank; 3. Oil cavity; 4. Diversion shell; 5. First butterfly valve; 6. Flip valve; 7. First discharge port; 8. Second discharge port; 9. Buffer chute; 10. Second butterfly valve; 11. Drain pipe; 12. Heating assembly; 13. Airflow assembly; 14. One-way air valve; 15. Air pump; 16. Conductive slip ring; 17. Hollow support; 18. Annular opening; 19. Air cavity; 20. Sealing cover plate; 21. Air pipe; 22. Flow guide groove; 23. Negative pressure connection port; 24. Floating connector; 25. Barrier filter plate. Rotary platform 91; sealed impregnation cylinder 92; power unit 93; third butterfly valve 94; fourth butterfly valve 95. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1 , Figure 2 As shown, a black peanut food production device of the present invention that can switch between braised and boiled flavors includes a boiling tank 1, an inner tank 2 coaxially installed inside the boiling tank 1, an oil cavity 3 is formed between the inner wall of the boiling tank 1 and the outer wall of the inner tank 2, and mineral heat-conducting oil is poured into the oil cavity 3. The bottom of the boiling tank 1 is connected to a diversion shell 4. The input end of the diversion shell 4 is connected to the bottom of the inner tank 2. The diversion shell 4 is equipped with a first butterfly valve 5 and a flap valve 6. The output end of the diversion shell 4 is divided into a first discharge port 7 and a second discharge port 8. The input ends of the first discharge port 7 and the second discharge port 8 are controlled by the flap valve 6. The first discharge port 7 is connected downward to the boiling finished product collection channel. The second discharge port 8 is connected to an inclined buffer chute 9. The output end of the buffer chute 9 is connected to the feeding station of the rotary braising unit. The output end of the buffer chute 9 is equipped with a second butterfly valve 10. The rotary brining unit includes a rotary platform 91 and multiple sealed impregnation cylinders 92 fixedly installed on the rotary platform 91. The bottom of the rotary platform 91 is connected to a power assembly 93 that drives it to rotate intermittently. A third butterfly valve 94 is installed at the input end of the sealed impregnation cylinder 92, and a fourth butterfly valve 95 is installed at the output end of the sealed impregnation cylinder 92. Both the inner tank 2 and the sealed impregnation cylinder 92 are equipped with a drain pipe 11, a heating component 12, an airflow component 13 and a one-way air valve 14. The drain pipe 11 is used to drain the liquid. The working end of the heating component 12 acts on the mineral heat transfer oil in the oil chamber 3. The airflow component 13 is a ring pipe with uniform air holes. The output end of the one-way air valve 14 is the outside of the inner tank 2 and the sealed impregnation cylinder 92. The power ends of the airflow components 13 of the inner tank 2 and the sealed impregnation cylinder 92 are both air pumps 15. The air pump 15 is installed in a non-interference position at the center of the rotary platform 91. The rotary platform 91 is equipped with a conductive slip ring 16. The output end of the conductive slip ring 16 is connected to the heating component 12. The rotary platform 91 is equipped with a hollow support 17. The air pump 15 is installed on the upper side of the hollow support 17. The hollow support 17 is provided with an annular opening 18. An air chamber 19 is rotatably installed on the annular opening 18. The output end of the air chamber 19 is connected to the input end of all the airflow components 13 on the sealed impregnation cylinder 92 through a pipe. A sealing cover plate 20 is rotatably installed on the top of the air chamber 19. The sealing cover plate 20 is integrally connected to an air pipe 21 connected to the output end of the air pump 15.

[0025] In this implementation case, the overall layout adopts a combination of high-level pre-cooking and low-level rotary braising. The water boiling tank 1 is vertically fixed on the upper frame of the equipment. The inner tank 2 is coaxially installed inside the water boiling tank 1. A closed oil cavity 3 is formed between the inner wall of the water boiling tank 1 and the outer wall of the inner tank 2. The oil cavity 3 is filled with mineral heat transfer oil as a heat exchange medium. The inner tank 2 is used to hold black peanuts and water for water boiling processing. The mineral heat transfer oil does not directly contact the material, but indirectly transfers heat to the water and material inside the inner tank 2 through the tank wall of the inner tank 2. The bottom of the boiling tank 1 is connected to a diversion shell 4. The input end of the diversion shell 4 is connected to the bottom of the inner tank 2. A first butterfly valve 5 and a flap valve 6 are installed on the diversion shell 4. The first butterfly valve 5 is used to control the opening and closing of the discharge channel at the bottom of the inner tank 2. The flap valve 6 is set in the diversion position inside the diversion shell 4. The output end of the diversion shell 4 is divided to form a first discharge port 7 and a second discharge port 8. The input ends of the first discharge port 7 and the second discharge port 8 are both controlled by the flap valve 6. When the flap valve 6 swings to one side, it blocks the input end of the first discharge port 7 and makes all the material flow to the second discharge port 8. When the flap valve 6 swings to the other side, it blocks the input end of the second discharge port 8 and makes all the material flow to the first discharge port 7. The switching between the two discharge paths is achieved by swinging the flap valve 6. The first discharge port 7 is connected downward to the boiled finished product collection channel. The black peanuts processed by boiling can be directly discharged through the first discharge port 7 as a boiled flavored finished product. The second discharge port 8 is connected to an inclined buffer chute 9. The output end of the buffer chute 9 is connected to the feeding station of the rotary braising unit. The output end of the buffer chute 9 is equipped with a second butterfly valve 10, which is used to control the opening and closing of the output channel of the buffer chute 9. The rotary braising unit is located below the boiling tank 1. The rotary braising unit includes a rotary platform 91 and multiple sealed impregnation cylinders 92 fixedly installed on the rotary platform 91. The multiple sealed impregnation cylinders 92 are evenly arranged along the circumference of the rotary platform 91. A power component 93 is connected to the bottom of the rotary platform 91. The power component 93 drives the rotary platform 91 to perform intermittent rotational motion, so that each sealed impregnation cylinder 92 stops sequentially at the feeding station and the subsequent processing station. Each sealed impregnation cylinder 92 is equipped with a third butterfly valve 94 at its input end. The third butterfly valve 94 is used to control the opening and closing of the top feed channel of the sealed impregnation cylinder 92. Each sealed impregnation cylinder 92 is equipped with a fourth butterfly valve 95 at its output end. The fourth butterfly valve 95 is used to control the opening and closing of the bottom discharge channel of the sealed impregnation cylinder 92. The inner tank 2 and each sealed impregnation cylinder 92 are equipped with a drain pipe 11, a heating component 12, an airflow component 13 and a one-way air valve 14. The drain pipe 11 is used to drain the liquid inside the tank. The working end of the heating component 12 acts on the mineral heat transfer oil in the oil chamber 3. The indirect constant temperature heating of the material inside the inner tank 2 and the sealed impregnation cylinder 92 is achieved by heating the mineral heat transfer oil. The airflow component 13 is a uniformly perforated annular pipe. The annular pipe is arranged at the bottom of the tank. The output end of the one-way air valve 14 faces the outside of the tank and is used to automatically vent and release pressure when the pressure inside the tank exceeds the set value to prevent the pressure inside the tank from being too high. A hollow support 17 is provided at the center of the rotary platform 91. The hollow support 17 is vertically fixed to the equipment frame. The rotary platform 91 can rotate around the hollow support 17. The air pump 15 is fixedly installed on the upper side of the hollow support 17. A conductive slip ring 16 is installed on the rotary platform 91. The output end of the conductive slip ring 16 is connected to the heating component 12. The power transmission from the fixed side power supply to the rotating side heating component 12 is realized through the conductive slip ring 16, avoiding the power cord from getting tangled during the rotation of the rotary platform 91. An annular opening 18 is provided on the side wall of the hollow support 17. An air chamber 19 is rotatably installed on the annular opening 18. The air chamber 19 can rotate around the axis of the hollow support 17. The output end of the air chamber 19 is connected to the input end of the airflow component 13 on all the sealed impregnation cylinders 92 through a pipe. The air chamber 19 rotates synchronously with the rotary platform 91, so that the pipe connecting the air chamber 19 and each airflow component 13 will not get tangled due to the rotation of the rotary platform 91. A sealing cover plate 20 is rotatably mounted on the top of the air chamber 19. An air pipe 21 is integrally connected to the sealing cover plate 20. The other end of the air pipe 21 is connected to the output end of the air pump 15. The air pump 15 is fixed, the air pipe 21 and the sealing cover plate 20 remain stationary, and the air chamber 19 rotates relative to the sealing cover plate 20. A rotating sealing surface is formed between the two, so that the fixed side air pump 15 can continuously supply air to the rotating side air chamber 19 without gas leakage. When the device is running, black peanuts and water are first put into the inner tank 2. The heating component 12 heats the mineral heat transfer oil in the oil chamber 3 and transfers the heat to the water inside the inner tank 2 through the tank wall to boil the black peanuts. During the boiling process, the airflow component 13 can supply air through the air pump 15 and discharge bubbles from the air holes of the annular pipe. The bubbles rise and drive the water to flow slowly, so that the black peanuts are heated evenly. After boiling, the first butterfly valve 5 is opened, and black peanuts and water enter the diversion housing 4. The swing direction of the flap valve 6 is controlled according to production needs. If boiling flavor is to be produced, the material is directed to the first discharge port 7 for direct discharge. If further processing of braised flavor is required, the material is directed to the second discharge port 8 and slides down to the feeding station through the buffer chute 9. Furthermore, the first discharge port 7 and the second discharge port 8 can discharge at the same time. At this time, the rotary platform 91 rotates an empty sealed soaking cylinder 92 to the feeding position. The second butterfly valve 10 and the third butterfly valve 94 open, and the black peanuts enter the sealed soaking cylinder 92. Then the second butterfly valve 10 and the third butterfly valve 94 close, and the rotary platform 91 rotates to the next position. During the braising process, brine is injected into the sealed soaking cylinder 92. The heating component 12 maintains the temperature of the brine through mineral heat transfer oil. The compressed air generated by the air pump 15 is delivered to the airflow component 13 of each sealed soaking cylinder 92 through the air pipe 21, the sealing cover plate 20, and the air chamber 19. Fine bubbles are discharged upward from the air hole of the annular pipe, which drives the brine to circulate slowly, so that the black peanuts are evenly soaked in flavor. The one-way air valve 14 automatically vents when the pressure in the tank is too high. After the braising is completed, the fourth butterfly valve 95 opens, and the black peanuts and brine are discharged from the bottom of the sealed soaking cylinder 92. The setting of multiple sealed soaking tanks 92 enables the injection of different flavored brine into different sealed soaking tanks 92 to achieve the braising of peanuts with different flavors; This device integrates pre-cooking in water and soaking in brine into a single unit. A flap valve 6 within the diversion shell 4 allows for flexible switching between direct discharge of the boiled product and entry into the brine unit, eliminating the need for two separate sets of equipment and reducing equipment investment and floor space. Indirect heating with mineral heat transfer oil ensures stable and controllable heating temperature, preventing localized high temperatures that could cause the black peanut skins to crack. The tank interior uses an annular venting system to ensure even mixing of materials, eliminating the need for stirring blades or baffles. The smooth inner wall of the tank reduces friction and collisions between peanuts and hard components, protecting the skins. The rotary platform 91's air supply is achieved through a fixed-side air pump 15, a stationary sealing cover 20, and a rotating seal between the rotating air chamber 19, ensuring continuous air supply. The electrical circuit uses a conductive slip ring 16 for rotational power supply, preventing pipes and cables from tangling during rotation and ensuring stable and reliable equipment operation. A guide channel 22 is preferably installed on the lower side of the rotary platform 91, with the input end of the guide channel 22 directly below the output end of the sealed impregnation cylinder 92.

[0026] In this implementation case, a guide channel 22 is installed on the lower side of the rotary platform 91. The input end of the guide channel 22 is directly below the output end of the sealed impregnation cylinder 92. When the fourth butterfly valve 95 is opened, the brine and black peanuts discharged from the sealed impregnation cylinder 92 fall directly into the guide channel 22. The guide channel 22 guides the material and liquid to the collection position. The guide channel 22 adopts an inclined tank structure with a smooth inner wall, which facilitates the material and liquid to flow to the end by their own weight. The guide channel 22 can be further configured as a detachable structure, which can be fixed to the frame below the rotary platform 91 by buckles or bolts for easy disassembly and cleaning. A screen separation structure can also be set at the end of the guide channel 22 to initially separate the black peanuts from the brine. The brine flows into the recycling tank for recycling, and the black peanuts enter the subsequent cooling and conveying process. Food-grade silicone lining can also be applied to the inner wall of the guide channel 22 to reduce the impact when the peanuts fall. This structure prevents liquid from splashing everywhere during drainage, keeping the surrounding environment of the equipment clean, while facilitating the recovery and centralized treatment of the brine and reducing material waste.

[0027] The inner tank 2 and the sealed impregnation cylinder 92 are preferably equipped with a negative pressure connection port 23. The negative pressure connection port 23 is located above the liquid surface. The negative pressure connection port 23 and the airflow assembly 13 cannot operate at the same time. When one of them is running, the other is in a state of air path cutoff.

[0028] In this embodiment, the inner tank 2 and the sealed impregnation cylinder 92 are equipped with a negative pressure connection port 23. The negative pressure connection port 23 is located above the liquid surface inside the tank. The negative pressure connection port 23 is connected to an external vacuum generator through a pipeline, which can evacuate the inside of the tank to lower the boiling point of the water to achieve low-temperature boiling, or extract the air inside the peanuts before braising to facilitate the penetration of the braising liquid. The negative pressure connection port 23 and the airflow assembly 13 cannot operate simultaneously. When one is running, the other is in a state of air circuit cutoff. This is achieved through interlocking control of the electrical control system. When evacuating, the air supply valve of the airflow assembly 13 is closed, and when aerating, the vacuum valve of the negative pressure connection port 23 is closed. The pipeline of negative pressure connection port 23 can be further equipped with a buffer tank and a vacuum regulating valve to precisely control the negative pressure value inside the tank. A water vapor separator can also be installed at negative pressure connection port 23 to prevent liquid from being sucked into the vacuum pipeline during the vacuuming process. The pipeline of negative pressure connection port 23 can also be integrated with the pipeline of one-way valve 14, and the two functions of vacuuming and natural exhaust can be switched through a three-way valve. This structure can prevent air from entering the airflow component and disrupting the negative pressure environment during vacuuming, while also preventing leakage at the negative pressure interface during aeration, ensuring stable operation under both working conditions.

[0029] The bottom surface of the buffer chute 9 is preferably an inclined surface sloping towards the output end. A floating connector 24 is installed at the output end of the buffer chute 9. The contact surface between the floating connector 24 and the input end of the sealed impregnation cylinder 92 is an inclined surface. When the floating connector 24 contacts the input end of the sealed impregnation cylinder 92, it will move upward and then spring back into the sealed impregnation cylinder 92. The movement stroke of the floating connector 24 is not within the operating range of the second butterfly valve 10 and the third butterfly valve 94.

[0030] In this embodiment, the inner bottom surface of the buffer chute 9 is an inclined surface sloping towards the output end, allowing the black peanuts to slide towards the output end by their own weight. A floating connector 24 is installed at the output end of the buffer chute 9. The contact surface between the floating connector 24 and the input end of the sealed impregnation cylinder 92 is an inclined surface. When the rotary platform 91 rotates the sealed impregnation cylinder 92 to the feeding position, the edge of the input end of the sealed impregnation cylinder 92 contacts the inclined surface of the floating connector 24, pushing the floating connector 24 to move upward. After the sealed impregnation cylinder 92 is fully in place, the floating connector 24 rebounds and inserts into the input end of the sealed impregnation cylinder 92 under the action of gravity or elastic elements, forming a plug-in seal. The movement stroke of the floating connector 24 is not within the operating range of the second butterfly valve 10 and the third butterfly valve 94, avoiding interference between the floating connector 24 and the valve plate of the butterfly valve when the floating connector 24 moves up and down. The insertion part of the floating connector 24 can be further equipped with a sealing ring to further improve the sealing effect. An elastic clamping element can also be set above the floating connector 24 to ensure sufficient clamping force after insertion. Rollers can also be set on the inclined surface of the floating connector 24 to reduce the frictional resistance when in contact with the feed cylinder input end. This structure enables automatic insertion and sealing between the buffer chute and the feed cylinder input end, eliminating the need for an additional lifting drive mechanism. The structure is simple and can compensate for minor positioning deviations of the rotary platform, ensuring the sealing of the feeding connection.

[0031] Preferably, the drain pipe 11 is equipped with a valve body and is normally closed, and the inlet end of the drain pipe 11 is equipped with a filter plate 25.

[0032] In this embodiment, a valve body is installed on the drain pipe 11 and is normally closed. It is only opened when the liquid inside the tank needs to be emptied. A barrier filter plate 25 is installed at the inlet of the drain pipe 11. The barrier filter plate 25 covers the inlet of the drain pipe 11. The barrier filter plate 25 has filter holes that allow liquid to pass through but block black peanut particles from passing through. The barrier filter plate 25 can be further designed to be combined with the annular tube of the airflow assembly 13. The annular tube covers the top of the drain pipe inlet, serving as both an aeration component and a barrier structure. The barrier filter plate 25 can also be made detachable to facilitate cleaning of clogged filter holes. A guide cone surface can also be provided above the barrier filter plate 25 to guide peanuts to move away from the drain pipe inlet, reducing the accumulation of peanuts above the filter plate. This structure can quickly empty the liquid in the tank when needed, while preventing peanut particles from clogging the pipeline or causing material loss during the liquid discharge. It also avoids the peanuts being crushed by the valve body during the drainage process. Preferably, the air holes on the annular tube in the airflow assembly 13 face downwards, and the diameter of the air holes is no more than half a centimeter.

[0033] In this embodiment, the air holes on the annular tube in the airflow assembly 13 face downwards and the diameter of the air holes is no more than half a centimeter. After the compressed air delivered by the air pump 15 enters the annular tube, it is discharged from the downward-facing air holes. The bubbles float upwards in the liquid, causing the surrounding liquid to form a slow circulation. The pores on the annular tube can be further arranged in an alternating manner to make the bubbles more evenly distributed on the cross-section of the tank. A guide plate can also be set below the annular tube to guide the bubbles to flow in a specific direction to enhance the mixing effect. The annular tube can also be set as a concentric double-ring structure to expand the coverage of the bubbles and ensure that the material in the center and edge areas of the tank is fully disturbed. This structure can generate fine and uniform rising bubbles. As the bubbles rise, they drive the liquid to circulate slowly, with gentle and non-violent disturbances. This achieves uniform mixing of materials while reducing the impact on the black peanut seed coat.

[0034] The preferred power assembly 93 is equipped with an encoder.

[0035] In this implementation case, the power component 93 is equipped with an encoder. The encoder rotates synchronously with the output shaft of the power component 93, detects the rotation angle of the rotary platform 91 in real time, and feeds the signal back to the control system. The control system adjusts the operation of the power component 93 according to the feedback signal to form a closed-loop positioning control. The encoder can be further selected as an absolute encoder, which can still record position information after power failure, avoiding the need for zeroing operation after restarting. It can also be used with a proximity switch for origin verification to further improve positioning reliability. In addition, sensing plates can be set on the outer ring of the rotary platform 91 corresponding to the position of each station to form dual position detection with the encoder, ensuring accurate station switching. This structure can provide real-time feedback on the rotation angle and station position of the rotary platform, realize closed-loop positioning control, improve the positioning accuracy of intermittent rotation of multiple stations, reduce cumulative errors, and ensure accurate docking of each material cylinder with the feeding and discharging stations.

[0036] Preferably, the inner wall and bottom surface of the inner tank 2 and the sealed impregnation cylinder 92 are continuous smooth arc surfaces and are not provided with any stirring ribs, baffles and welding protrusions.

[0037] In this embodiment, the inner walls and bottom surfaces of the inner tank 2 and the sealed impregnation cylinder 92 are continuous smooth arc surfaces, and no stirring ribs, baffles or welding protrusions are provided. There are no other protruding components inside the tank except for the annular pipe of the airflow component 13. When the black peanuts move with the liquid circulation inside the tank, they will not be scratched by sharp or protruding structures. The inner wall of the tank can be further polished or coated with a food-grade non-stick coating to further reduce the coefficient of friction. A large arc transition can also be used at the junction of the bottom and side wall of the tank to avoid materials getting stuck in dead corners. The outer surface of the annular tube can also be rounded and installed close to the bottom of the tank to reduce its obstruction to the movement of peanuts. This structure eliminates the risk of materials being scratched by hard structures during the turning process, which helps to protect the integrity of the black peanut seed coat. At the same time, the smooth inner wall makes it easy to rinse and clean, reducing material residue and unsanitary corners.

[0038] The preferred heating component 12 includes a temperature sensor for detecting the real-time temperature of the mineral heat transfer oil and feeding back to control the on / off state of the heating component 12, so as to maintain constant temperature heat exchange between the inner tank 2 and the sealed impregnation cylinder 92.

[0039] In this embodiment, the heating component 12 includes a temperature sensor. The detection end of the temperature sensor extends into the mineral heat transfer oil in the oil chamber 3 to detect the temperature of the heat transfer oil in real time and feed the signal back to the control system. The control system controls the on and off of the heating component 12 according to the temperature signal. When the oil temperature is lower than the set lower limit, heating is started. When the oil temperature reaches the set upper limit, heating is stopped, so that the oil temperature is maintained within the set range. A material temperature sensor can be added inside the inner tank 2 or the sealed impregnation cylinder 92 to directly detect the material temperature, forming a dual monitoring of the heat transfer oil temperature and the material temperature. A PID control algorithm can also be used to achieve more precise temperature regulation. A flow sensor can also be set in the heat transfer oil circulation pipeline to monitor the flow status of the heat transfer oil and prevent local overheating caused by circulation interruption. This structure can stabilize the oil temperature within a set range, reduce local overheating or underheating caused by temperature fluctuations, ensure the consistency of boiling and braising temperatures, and improve product quality stability.

[0040] Preferably, it also includes an electrical control system, which is electrically connected to the first butterfly valve 5, the flap valve 6, the second butterfly valve 10, the third butterfly valve 94, the fourth butterfly valve 95, the air pump 15, and the heating component 12. The electrical control system has three built-in working modes: full-volume boiling discharge, full-volume braising processing, and parallel operation of two production lines in a split flow. Each valve body is interlocked with the air pump 15 and the heating component 12 according to a preset timing sequence.

[0041] In this embodiment, the device also includes an electrical control system, which is electrically connected to the first butterfly valve 5, the flap valve 6, the second butterfly valve 10, the third butterfly valve 94, the fourth butterfly valve 95, the air pump 15, and the heating component 12. The electrical control system has three built-in working modes: full-volume boiling discharge, full-volume braising processing, and parallel operation of two production lines. Each valve body is interlocked with the air pump 15 and the heating component 12 according to a preset timing sequence. In the full-volume boiling discharge mode, the flap valve 6 switches to the first discharge port 7 side, and all the material is discharged as a boiled finished product. In the full-volume braising processing mode, the flap valve 6 switches to the second discharge port 8 side, and all the material enters the rotary braising unit. In the parallel operation of two production lines, the flap valve 6 alternately switches between the two discharge paths according to a preset ratio, producing two flavored products at the same time. The electrical control system can be further equipped with a human-machine interface to facilitate operators in modifying process parameters and working modes. It can also be connected to the factory production management system to achieve remote monitoring and data acquisition. Furthermore, it can be set with a fault alarm function to issue an alarm in a timely manner when the temperature is abnormal, the pressure exceeds the limit, or the valve does not act properly. This structure can flexibly switch working modes according to production needs, and each component operates in a pre-set sequence of interlocking, reducing manual operation and improving the degree of production automation and operational reliability.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A black peanut food production apparatus capable of switching between braised and boiled flavors, comprising a boiling tank (1), characterized in that: The inner tank (2) is coaxially installed inside the water boiling tank (1). An oil cavity (3) is formed between the inner wall of the water boiling tank (1) and the outer wall of the inner tank (2). The oil cavity (3) is filled with mineral heat transfer oil. The bottom of the boiling tank (1) is connected to a diversion shell (4). The input end of the diversion shell (4) is connected to the bottom of the inner tank (2). The diversion shell (4) is equipped with a first butterfly valve (5) and a flap valve (6). The output end of the diversion shell (4) is divided into a first discharge port (7) and a second discharge port (8). The input ends of the first discharge port (7) and the second discharge port (8) are controlled by the flap valve (6). The first discharge port (7) is connected downward to the boiled product collection channel. The second discharge port (8) is connected to an inclined buffer chute (9). The output end of the buffer chute (9) is connected to the feeding station of the rotary braising unit. The output end of the buffer chute (9) is equipped with a second butterfly valve (10). The rotary brining unit includes a rotary platform (91) and multiple sealed impregnation cylinders (92) fixedly installed on the rotary platform (91). The bottom of the rotary platform (91) is connected to a power assembly (93) that drives it to rotate intermittently. A third butterfly valve (94) is installed at the input end of the sealed impregnation cylinder (92), and a fourth butterfly valve (95) is installed at the output end of the sealed impregnation cylinder (92). Both the inner tank (2) and the sealed impregnation cylinder (92) are equipped with a drain pipe (11), a heating component (12), an airflow component (13), and a one-way air valve (14). The drain pipe (11) is used to drain the liquid. The working end of the heating component (12) acts on the mineral heat transfer oil in the oil chamber (3). The airflow component (13) is a ring pipe with uniform air holes. The output end of the one-way air valve (14) is outside the inner tank (2) and the sealed impregnation cylinder (92). The power source of the airflow assembly (13) of both the inner tank (2) and the sealed impregnation cylinder (92) is an air pump (15). The air pump (15) is installed at a non-interference position in the center of the rotary platform (91). The rotary platform (91) is equipped with a conductive slip ring (16), the output end of which is connected to the heating assembly (12). The rotary platform (91) is equipped with a hollow support (17), and the air pump (15) is installed on the hollow support. (17) On the upper side, the hollow support (17) is provided with an annular opening (18), and an air chamber (19) is rotatably installed on the annular opening (18). The output end of the air chamber (19) is connected to the input end of all the airflow components (13) on the sealed impregnation cylinder (92) through a pipe. A sealing cover plate (20) is rotatably installed on the top of the air chamber (19), and the sealing cover plate (20) is integrally connected to an air pipe (21) connected to the output end of the air pump (15).

2. The black peanut food production device with switchable flavors of braised and boiled peanuts according to claim 1, characterized in that: A guide channel (22) is installed on the lower side of the rotary platform (91), and the input end of the guide channel (22) is directly below the output end of the sealed impregnation cylinder (92).

3. The black peanut food production device with switchable flavors of braised and boiled peanuts according to claim 1, characterized in that: The inner tank (2) and the sealed impregnation cylinder (92) are provided with a negative pressure connection port (23). The negative pressure connection port (23) is located above the liquid surface. The negative pressure connection port (23) and the airflow assembly (13) cannot operate at the same time. When one of them is running, the other is in a state of air path cutoff.

4. The black peanut food production device with switchable flavors of braised and boiled peanuts according to claim 1, characterized in that: The bottom surface of the buffer chute (9) is an inclined surface that slopes towards the output end. A floating connector (24) is installed at the output end of the buffer chute (9). The contact surface between the floating connector (24) and the input end of the sealed impregnation cylinder (92) is an inclined surface. When the floating connector (24) contacts the input end of the sealed impregnation cylinder (92), it will move upward and then spring back into the sealed impregnation cylinder (92). The movement stroke of the floating connector (24) is not within the operating range of the second butterfly valve (10) and the third butterfly valve (94).

5. The black peanut food production device with switchable flavors of braised and boiled peanuts according to claim 1, characterized in that: The drain pipe (11) is equipped with a valve body and is normally closed. The inlet end of the drain pipe (11) is equipped with a barrier filter plate (25).

6. The black peanut food production device with switchable flavors of braised and boiled peanuts according to claim 1, characterized in that: The air holes on the annular tube in the airflow assembly (13) face downwards, and the diameter of the air holes is no more than half a centimeter.

7. The black peanut food production device with switchable flavors of braised and boiled peanuts according to claim 1, characterized in that: The power unit (93) is equipped with an encoder.

8. The black peanut food production device with switchable flavors of braised and boiled peanuts according to claim 1, characterized in that: The inner wall and bottom surface of the inner tank (2) and the sealed impregnation cylinder (92) are continuous smooth arc surfaces and are not provided with any stirring ribs, baffles and welding protrusions.

9. A black peanut food production device capable of switching between braised and boiled flavors according to claim 1, characterized in that: The heating component (12) includes a temperature sensor for detecting the real-time temperature of the mineral heat transfer oil and feeding back to control the on / off state of the heating component (12) to maintain constant temperature heat exchange between the inner tank (2) and the sealed impregnation cylinder (92).

10. A black peanut food production device with switchable flavors of braised and boiled peanuts according to claim 1, characterized in that: It also includes an electrical control system, which is electrically connected to the first butterfly valve (5), the flap valve (6), the second butterfly valve (10), the third butterfly valve (94), the fourth butterfly valve (95), the air pump (15), and the heating component (12). The electrical control system has three built-in working modes: full-volume boiling discharge, full-volume braising processing, and parallel operation of dual production lines. Each valve body is interlocked with the air pump (15) and the heating component (12) according to a preset time sequence.

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