Green wheat kernel twisting continuous production equipment and production process

Abstract

The present invention relates to equipment for continuous production of twisted green wheat kernels, comprising a cooking and maturing tower, a precipitation and tempering tower, a heat pump unit, a twisting and forming device, a quick-freezing tunnel cooler, and a packaging conveyor connected in a front-to-back manner, forming an automated continuous twisting production line. At the same time, a uniform discharge device is provided at the bottom of the cooking and maturing tower and the precipitation and tempering tower to ensure uniformity of material quality during processing and to enable slow material drop; and the material is circulated and transported by a bucket elevator and a conveyor. The present invention also relates to a continuous production process for twisting green wheat kernels. Fresh highland barley kernels and green wheat kernels are subjected to raw material withering, cooking and maturation, precipitation and tempering, twisting and forming, cooling, and packaging on the production line to form twisted products, which can improve the production efficiency of twisting and promote the large-scale production of twisted foods.

Description

Technical Field

[0001] The present invention relates to the technical field of food production equipment, in particular to green wheat kernel twisting continuous production equipment and a production process. Background Art

[0002] Niannianzhuan is made from fresh highland barley or green wheat kernels, which are ground into light green round strips about an inch in size using a water stone mill. It is a specialty product of northern Henan and southeastern Gansu.

[0003] The twisting process requires a stone mill, which is used to crush the wheat kernels to form rope-like food segments. The stone mill itself has the disadvantages of being large in size and weight, inconvenient to operate, and having a small processing scale. The stone mill can only be used for small-batch forming of twisting, and the preliminary processing of the twisting raw material - wheat kernels still requires manual labor.

[0004] For example, the application number CN200610017913.X discloses a milled and twisted food production equipment and production method, which involves inspecting, screening, washing, soaking and reducing high-quality wheat, cooking, and frying it until the moisture content reaches 0.8 kilograms per kilogram of wheat. The wheat, along with its skin and flour, is then ground into a milled and twisted shape using special iron mill bars, dried in an oven, and packaged in bags. In other words, the wheat is shaped and twisted using a special iron mill.

[0005] Generally speaking, traditional twisting is made by manually rubbing the kernels from freshly harvested barley or green wheat, removing the hard shells, and then frying them in a pan. Once cooked, the wheat is quickly ground and pressed into twisting. This is a small-scale process, requiring manual labor for kernel ripening and drying. The process is also relatively simple, hindering scalable production and hindering market adoption of twisting foods. Summary of the Invention

[0006] In order to solve the problem that the existing twisting is mostly done manually in small batches and cannot be produced on a large scale continuously, the present invention provides continuous production equipment and production technology for twisting green wheat kernels. By connecting multiple production equipment with each other, automatic large-scale production of twisting can be achieved, and an integrated production line for withering, steaming and maturation, precipitation and tempering, twisting and forming, quick freezing and packaging of twisted product raw materials can be realized.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] The green wheat kernel twisting continuous production equipment includes a steaming and cooking device, a precipitation and tempering device, a twisting and forming device, a quick-freezing tunnel cooler and a packaging conveyor, which are connected in sequence. The wheat kernel raw materials are processed by the above equipment in sequence to finally obtain the twisted product;

[0009] The cooking and maturation device includes a belt conveyor, a bucket elevator, and a cooking and maturation tower, which are sequentially connected, and a three-way flap valve connected to the outlet of the cooking and maturation tower. The belt conveyor is used to transport the highland barley and wheat kernel raw materials, and the bucket elevator is used to transport the raw materials into the cooking and maturation tower.

[0010] The cooking and maturation tower is used for removing green raw materials, cooking and maturing fresh highland barley and green wheat kernels. Multiple layers of steam heating pipes are evenly arranged inside the cooking and maturation tower. A main steam pipeline is connected between the multiple layers of steam heating pipes. A uniform discharge device is provided at the bottom of the cooking and maturation tower for controlling the flow of materials in the tower. One outlet of the three-way flap valve is provided with a return conveyor to connect to a bucket elevator.

[0011] The dehydration and conditioning device includes a second belt conveyor, a second bucket elevator, and a dehydration and conditioning tower connected in sequence, a second three-way flap valve connected to the outlet of the dehydration and conditioning tower, and a heat pump unit; the second bucket elevator is used to transport the cooked wheat kernels to the dehydration and conditioning tower;

[0012] The other outlet of the three-way flap valve one is connected to the belt conveyor two. The precipitation and tempering tower is used to precipitate and temper the fresh barley and green wheat kernels after cooking and maturation to achieve the quality of twisting and grinding. The precipitation and tempering tower is provided with multiple layers of ventilation sections. The heat pump unit is used to circulate and connect with the ventilation sections to supply hot air to the ventilation sections. The ventilation sections on the bottom layer are connected to the heating outlet of the heat pump unit. The ventilation sections emit high-temperature hot air to dry the wheat kernels. The ventilation sections on the top layer are connected to the return air outlet of the heat pump unit. A uniform discharging device is provided at the bottom of the precipitation and tempering tower. One outlet of the three-way flap valve two is provided with a return conveyor two to connect to the bucket elevator two. The other outlet of the three-way flap valve two is provided with a belt conveyor three to connect to the twisting forming device, the quick-freezing tunnel cooler and the packaging conveyor in sequence.

[0013] Furthermore, the multiple layers of steam heating pipes are arranged at intervals up and down, and the number of steam heating pipes in each layer is multiple, so that the steam is evenly sprayed in the cooking and aging tower. Steam nozzles are opened on the steam heating pipes to discharge steam to degreen and cook the materials, that is, 120°C steam is sprayed out through the steam nozzles to degreen and cook the fresh barley and green wheat kernels;

[0014] The main steam pipeline is arranged outside the cooking and maturing tower, and the main steam pipeline is connected to a steam generator.

[0015] Furthermore, a dehumidification fan is provided on the top of the cooking and maturing tower to remove excess humid gas during the working process.

[0016] Furthermore, the uniform discharge device in the cooking and aging tower is the same as the uniform discharge device in the precipitation and tempering tower. The uniform discharge device includes a continuously bent "W"-shaped hopper and a discharge mechanism provided at the outlet of the hopper. The discharge mechanism facilitates the wheat kernels in the hopper to flow out from the outlet.

[0017] The gathering hopper facilitates the gathering of wheat kernels. A plurality of outlets are spaced apart at the lower end of the gathering hopper, and the plurality of outlets correspond to each other in groups of two. The discharge mechanism is used to discharge the wheat kernels in the gathering hopper. The discharge mechanism includes a discharge roller and a discharge motor. A discharge roller is rotatably provided at each of the outlet positions. A chain transmission is provided between the discharge motor and the plurality of discharge rollers. The discharge motor is arranged outside the steaming and maturation tower, and the discharge rollers at a group of two outlet positions rotate in opposite directions.

[0018] Furthermore, the bucket elevator 1, the cooking and maturation tower, the three-way flap valve 1 and the return conveyor are connected in sequence from head to tail to form a cooking and maturation cycle, and the moisture content of the wheat kernel after maturation is about 70%.

[0019] Furthermore, the ventilation section includes two layers of air inlet ventilation sections and air outlet ventilation sections that are spaced apart in an upper and lower manner, which are used for absorbing and dispersing hot air respectively. The number of the air inlet ventilation sections and air outlet ventilation sections are both multiple and spaced apart in a horizontal direction, and there is a gap between two adjacent air inlet ventilation sections or air outlet ventilation sections to form a material channel.

[0020] Furthermore, the air inlet ventilation section is a rectangular cavity structure, and the top of the air inlet ventilation section is narrowed in a "∧" shape, so as not to block the falling of the wheat kernels and prevent the wheat kernels from accumulating on the top of the air inlet ventilation section. The two side surfaces of the air inlet ventilation section are hollow surfaces to facilitate air flow. The air outlet ventilation section has the same structure as the air inlet ventilation section.

[0021] An air inlet pipe is provided between the multiple air inlet ventilation sections to connect to the return air outlet of the heat pump unit, and an air outlet pipe is provided between the multiple air outlet ventilation sections to connect to the heating outlet of the heat pump unit. The air inlet pipe and the air outlet pipe are both arranged outside the precipitation and conditioning tower.

[0022] Furthermore, the second bucket elevator, the precipitation and tempering tower, the second three-way flap valve and the second return conveyor are connected end to end in sequence to form a drying and tempering cycle, and the moisture content of the wheat kernel after drying and tempering is about 45%.

[0023] Furthermore, the twisting and forming device, quick-freezing tunnel cooling machine, and packaging conveyor are connected in series. The twisting and forming device is a tapered screw extruder structure, used for spiral extrusion of twisted products. The outlet of the twisting and forming device is provided with a forming plate with a plurality of forming holes, which are either circular or square. The quick-freezing tunnel cooling machine and packaging conveyor are respectively used for cooling the twisted products after forming and transporting the cooled twisted products to the packaging line.

[0024] The continuous production process of twisting highland barley and green wheat kernels includes the following processing steps:

[0025] Step 1: Adding raw materials: Pour a certain amount of shelled wheat kernels onto belt conveyor 1. Belt conveyor 1 and bucket elevator 1 transport all the wheat kernels to the cooking and maturation tower for accumulation. A material level sensor is installed in the tower to control belt conveyor 1 to stop in advance. After the material in bucket elevator 1 is completely transported and the wheat kernel accumulation height reaches the set material level, ensure that there is no material in bucket elevator 1.

[0026] Step 2, withering, steaming and aging: while feeding the material into the steaming and aging tower, set the pressure in the steam heating pipe to 0.6-0.8 MPa and the steam temperature in the steam heating pipe to 120°C to wither and steam the accumulated wheat kernels to mature them, and the cooking time is 20 minutes;

[0027] At the same time, the three-way flap valve is controlled to connect to the return conveyor, and the discharge mechanism in the tower maintains slow and uniform discharge. The wheat kernels then flow out from the bottom outlet of the cooking and aging tower and re-enter the tower through the bucket elevator to be cooked and aged again, forming a cycle cooking. At this time, the steam pressure and steam temperature are kept constant.

[0028] The cooking and aging tower is equipped with multiple temperature and humidity sensors from top to bottom. The data monitored by these sensors are used to determine whether the wheat kernels have reached the required quality. If not, the material is continued to be cooked in a circulating steamer. If it does, the three-way flap valve 1 is connected to the belt conveyor 2, and the wheat kernels with a moisture content of 70% are flowed to the belt conveyor 2.

[0029] Step 3: First transfer of raw materials: Belt conveyor 2 and bucket elevator 2 transport all the wheat kernels with a moisture content of 70% in the cooking and maturation tower to the precipitation and tempering tower for accumulation; then repeat steps 1-2 to continue adding raw materials to the cooking and maturation tower and cooking;

[0030] Step 4, drying and conditioning: while feeding the material into the precipitation conditioning tower, start the heat pump unit and set the outlet air temperature of the heat pump unit to 60-75℃. The hot air is evenly dispersed through multiple air outlet ventilation sections to precipitate and dry the accumulated wheat kernels. The drying time is 4 hours.

[0031] At the same time, the three-way flap valve 2 is controlled to connect with the return conveyor 2, and the discharge mechanism in the tower keeps discharging slowly and evenly. The wheat kernels then flow out from the bottom outlet of the precipitation and conditioning tower and re-enter the precipitation and conditioning tower through the bucket elevator 2 for drying and precipitation again. At this time, the original drying temperature is maintained unchanged.

[0032] The precipitation-conditioning tower is equipped with multiple temperature and humidity sensors from top to bottom, as well as a material level sensor at the top. The data from these sensors determines whether the wheat kernels meet the precipitation-conditioning quality requirements. If not, the material continues to circulate through precipitation drying. If it does, the three-way flap valve 2 is connected to the third belt conveyor, and the wheat kernels with a moisture content of 45% are transferred to the third belt conveyor.

[0033] Step 5: Raw materials are transferred again: Belt conveyor 3 continuously transports the wheat kernels with a moisture content of 45% in the precipitation and tempering tower to the twisting and forming device;

[0034] Step 6, twisting and forming: Start the twisting and forming device, and the conical spiral shaft continuously pushes and squeezes the wheat kernels, and the wheat kernels are twisted into long round strips after passing through the forming disk;

[0035] Step 7, quick freezing and packaging: The long round strips of twisted yarn enter the quick freezing tunnel cooling machine, and the operating temperature is set at -18~-30℃. The twisted yarn is cooled in this environment until the twist core reaches -18℃ and is sent out. Finally, it is transported to the packaging production line on the packaging conveyor for packaging.

[0036] Through the above technical solution, the beneficial effects of the present invention are:

[0037] The present invention features a rationally designed structure, with a steaming and aging tower, a dehydration and tempering tower, a twisting and forming device, a quick-freezing tunnel, and a packaging conveyor interconnected to form an automated production line for twisted wheat. The continuous operation of each device facilitates large-scale production of twisted wheat. This production line produces wheat kernels through withering, steaming, aging, dehydration and tempering, extrusion molding, cooling, and packaging, resulting in twisted products. This improves production efficiency and promotes the market adoption of twisted wheat products.

[0038] The present invention utilizes high-temperature steam to steam and mature the wheat kernels within the cooking and maturation tower. With the cooperation of three-way flap valve 1, return conveyor 1, and bucket elevator 1, the wheat kernels can be circulated within the cooking and maturation tower until they reach the desired degree of maturation, at which point they are controlled to flow to the subsequent process. The heat pump unit and ventilation section cooperate to ensure that the precipitation and tempering tower is always filled with high-temperature hot air while also saving energy. The wheat kernels are cooled and dehydrated within the precipitation and tempering tower, facilitating drying. With the cooperation of three-way flap valve 2, return conveyor 2, and bucket elevator 2, the wheat kernels can be circulated within the precipitation and tempering tower until they reach the desired degree of maturation and drying, at which point they are controlled to flow to the subsequent process. The three-way flap valve serves to change the flow direction of the wheat kernels, controlling whether the material circulates within the current process or flows to the next process.

[0039] The moisture content of the wheat kernel after steaming and ripening is 70%, and then the wheat kernel enters a precipitation and tempering tower for drying. The wheat kernel with a moisture content of 45% after drying enters a twisting and forming device. Under the action of spiral extrusion, the wheat kernel passes through a forming disk to form a round strip of twist, which is then cooled and packaged, forming a large-scale twisting production line, which can conveniently process the wheat kernel into twists. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The present invention is a schematic diagram of the system flow of the green wheat kernel twisting continuous production equipment.

[0041] Figure 2 The invention is a green wheat kernel twisting continuous production equipment Figure 1 Partial schematic diagram of the medium steaming and maturing tower, where the arrows in the tower indicate the direction of material flow.

[0042] Figure 3 The invention is a green wheat kernel twisting continuous production equipment Figure 1 Schematic diagram of the transmission of the middle discharge mechanism.

[0043] Figure 4 The invention is a green wheat kernel twisting continuous production equipment Figure 1 Partial schematic diagram of the medium precipitation conditioning tower, where the arrows in the tower indicate the direction of material flow.

[0044] Figure 5 The invention is a green wheat kernel twisting continuous production equipment Figure 1 Top view of the center-outlet ventilation section, with arrows pointing to the direction of air flow.

[0045] Figure 6 The invention is a green wheat kernel twisting continuous production equipment Figure 1 Schematic diagram of the middle forming plate.

[0046] Figure 7 The present invention is a process flow chart of the continuous twisting production process of highland barley and green wheat kernels.

[0047] The numbers in the attached drawings are: 1 belt conveyor 1, 2 cooking and aging tower, 3 dehumidification fan, 4 bucket elevator 1, 51 steam heating pipe, 52 main steam pipeline, 6 gathering hopper, 7 discharge mechanism, 71 discharge motor, 72 discharge roller, 8 three-way flap valve 1, 9 return conveyor 1, 10 precipitation and tempering tower, 11 bucket elevator 2, 12 belt conveyor 2, 131 air inlet ventilation section, 132 air outlet ventilation section, 141 forming hole, 142 forming plate, 15 material channel, 16 heat pump unit, 17 outlet pipeline, 18 air inlet pipeline, 19 chain, 20 three-way flap valve 2, 21 return conveyor 2, 22 twisting and forming device, 23 belt conveyor 3, 24 large sprocket, 25 small sprocket, 26 quick-freezing tunnel cooling machine, 27 packaging conveyor. DETAILED DESCRIPTION

[0048] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0049] like Figures 1 to 6 As shown, the continuous production equipment for twisting green barley kernels includes a cooking and maturation device, a precipitation and tempering device, a twisting and forming device 22, a quick-freezing tunnel cooler 26 and a packaging conveyor 27 which are connected in sequence. The shelled high-quality highland barley kernels are sequentially subjected to raw material withering, cooking and maturation, precipitation and tempering, twisting and forming, quick freezing and packaging in the above-mentioned equipment. The above-mentioned equipment is connected front and back to form an integrated production line for twisted products.

[0050] The steaming and cooking device is used to steam and cook highland barley kernels, using hot steam to de-green the kernels and cook them. The device includes a belt conveyor 1, a bucket elevator 4, and a steaming and cooking tower 2, all connected in sequence. A three-way flap valve 8 connects to the outlet of the steaming and cooking tower 2.

[0051] Belt conveyor 1 is used to transport highland barley kernel raw material, that is, high-quality highland barley kernel after shelling is transported on belt conveyor 1. After being transported by belt conveyor 1 and bucket elevator 4, the raw material enters the cooking and maturation tower 2 from the top center position.

[0052] The cooking and aging tower 2 is evenly distributed with multiple layers of steam heating pipes 51, spaced apart vertically. Each layer contains multiple steam heating pipes 51, each equipped with steam nozzles that spray steam to deactivate and cook the material. To supply steam to the steam heating pipes 51, a main steam line 52 connects the pipes 51. This line is routed outside the cooking and aging tower 2 and is connected to a steam generator.

[0053] A dehumidification fan 3 is provided on the top of the cooking and maturation tower 2. The function of the dehumidification fan 3 is to remove excess moist gas during the operation of the cooking and maturation tower 2.

[0054] A uniform discharge device is provided at the bottom of the cooking and maturation tower 2. The uniform discharge device is used to intercept and discharge the material. That is, the material entering the cooking and maturation tower 2 is blocked by the uniform discharge device and temporarily stored in the tower. At this time, the steam heating pipe 51 is used to emit hot steam to act on the wheat kernels to achieve the steaming effect. After the high-temperature steam is used to kill the wheat kernels and cook them, they are controlled to be discharged.

[0055] The uniform discharge device comprises a continuously curved "W"-shaped hopper 6 and a discharge mechanism 7 positioned at the outlet of the hopper 6. The lower end of the hopper 6 is provided with multiple, spaced-apart outlets, six in total, each of which is a long, rectangular opening. The six outlets are arranged in pairs, for a total of three groups. Raw materials are intercepted by the hopper 6 and temporarily stored within the cooking and maturation tower 2. After steam cooking, they are discharged from the outlets, with the discharge directions of the two-by-two groups of outlets facing each other.

[0056] The discharge mechanism 7 is used to control the on and off of the outlet of the hopper 6. The discharge mechanism 7 includes a discharge roller 72 and a discharge motor 71. A discharge roller 72 is rotatably provided at each outlet position. There are six discharge rollers 72. A chain transmission is used between the discharge motor 71 and the six discharge rollers 72. The discharge motor 71 is arranged outside the cooking and maturation tower 2. A group of discharge rollers 72 at two outlet positions rotate in opposite directions.

[0057] Specifically, one end of each discharge roller 72 extends into the cooking tower 2 and is connected to a small sprocket 25. A large sprocket 24 is mounted on the output shaft of the discharge motor 71. The large and small sprockets 24 and 25 are connected by a chain 19, achieving synchronous transmission. The discharge motor 71 simultaneously drives the six discharge rollers 72, which rotate in pairs in opposite directions.

[0058] When the discharge roller 72 rotates, the outlet is opened, allowing material to be discharged. When the discharge roller 72 stops rotating, the outlet is closed, preventing material from being discharged. The discharge mechanism 7 discharges the accumulated wheat kernels in the hopper 6 toward the outlet of the cooking and maturation tower 2, the lower end of which is an inverted conical space.

[0059] One outlet of the three-way flap valve 8 is equipped with a return conveyor 9, which connects to the bucket elevator 4. This interconnects the bucket elevator 4, the steaming and aging tower 2, the three-way flap valve 8, and the return conveyor 9, forming a steaming and aging cycle. During operation, if the material does not meet the required quality for the steaming and aging process, it is returned to the steaming and aging tower 2 via the return conveyor 9 and bucket elevator 4 for further cyclical steaming and aging. This effectively stirs the wheat kernels and improves their aging uniformity until the required quality is achieved. Only when the material meets the required quality for the steaming and aging process does it enter the subsequent dewatering and conditioning device for dewatering and conditioning.

[0060] The dehumidification and conditioning device is used to cool and dehumidify steamed highland barley kernels. It uses hot air to cool and dehumidify the kernels to achieve the desired dryness. The dehumidification and conditioning device includes a belt conveyor 12, a bucket elevator 11, and a dehumidification and conditioning tower 10, which are connected in sequence. A three-way flap valve 20 is connected to the outlet of the dehumidification and conditioning tower 10, and a heat pump unit 16.

[0061] The other outlet of the three-way flap valve 8 is connected to the belt conveyor 2 12 to achieve the connection between the previous and next processes. When the material reaches the cooking and aging quality requirements in the cooking and aging tower 2, the material is controlled by the three-way flap valve 8 to be passed to the belt conveyor 2 12, and then passes through the bucket elevator 2 11. Finally, the material enters the tower from the top center of the precipitation and conditioning tower 10.

[0062] Multiple layers of ventilation sections are arranged inside the precipitation and conditioning tower 10. Specifically, the ventilation sections include two layers of air inlet ventilation sections 131 and air outlet ventilation sections 132 that are spaced apart in an upper and lower manner. The number of air inlet ventilation sections 131 and air outlet ventilation sections 132 are both arranged in a plurality and spaced apart horizontally. There is a gap between two adjacent air inlet ventilation sections 131 or air outlet ventilation sections 132 to form a material channel 15. The material entering the precipitation and conditioning tower 10 flows downward through the material channel 15.

[0063] The air inlet ventilation section 131 is a rectangular cavity structure. After being installed in the precipitation and conditioning tower 10, the two ends of the air inlet ventilation section 131 are sealed by the precipitation and conditioning tower 10. The top of the air inlet ventilation section 131 is narrowed in an "∧" shape, and the material channel 15 is funnel-shaped. The two sides of the air inlet ventilation section 131 are hollow surfaces. These hollow surfaces are composed of tiny micropores. They do not affect the flow of air, and the material will not block the hollow surfaces, nor will it pass through the hollow surfaces into the interior of the air inlet ventilation section 131. The air outlet ventilation section 132 has the same structure as the air inlet ventilation section 131, but has different functions: one is used for air outlet and the other is used for air intake.

[0064] To supply heat to the ventilation sections, the bottom ventilation sections connect to the heat supply outlet of the heat pump unit 16, while the top ventilation sections connect to the return air outlet of the heat pump unit 16, thus forming a hot air circulation system. Specifically, an air inlet duct 18 is provided between the multiple air inlet ventilation sections 131 to connect to the return air outlet of the heat pump unit 16, and an air outlet duct 17 is provided between the multiple air outlet ventilation sections 132 to connect to the heat supply outlet of the heat pump unit 16. Both the air inlet duct 18 and the air outlet duct 17 are arranged outside the precipitation and conditioning tower 10. The air inlet duct 18 includes a main pipe and multiple branch pipes. The air outlet duct 17 and the air inlet duct 18 have the same structure.

[0065] The heat pump unit 16 is a separate device, independent of the precipitation and conditioning tower 10. It dries and conditions the material by adjusting its heat supply and moisture removal. Moist air is condensed and discharged through the heat pump unit 16 itself, achieving the purpose of precipitation and conditioning. When the heat pump unit 16 is in operation, the high-temperature hot air generated by the heat pump unit 16 is evenly distributed through the outlet duct 17 into each outlet ventilation section 132. Each outlet ventilation section 132 has air outlets on both sides. The hot air flows upward within the precipitation and conditioning tower 10, thereby precipitating and cooling the accumulated wheat kernels, gradually drying them. The hot air then flows upward to the vicinity of the inlet ventilation section 131. Suction forces it enter the inlet ventilation section 131 from both sides, returning to the return air outlet of the heat pump unit 16 along the inlet duct 18. This creates a heat cycle. Through this continuous heat circulation, the heat pump unit 16 effectively cools and hydrates the wheat kernels within the precipitation and conditioning tower 10.

[0066] A uniform discharge device is provided at the bottom of the precipitation and conditioning tower 10. The uniform discharge device within the precipitation and conditioning tower 10 is identical in structure to the uniform discharge device within the cooking and maturation tower 2 and will not be further described here. The uniform discharge device is used to intercept and discharge materials. Specifically, materials entering the precipitation and conditioning tower 10 are blocked by the uniform discharge device and temporarily stored within the tower. When the wheat kernels are accumulated, the air outlet ventilation section 132 can be used to emit hot air onto the wheat kernels, achieving a cooling and precipitation effect. The wheat kernels are then precipitated and dried by the high-temperature hot air from the heat pump unit 16 before being controlled for discharge. The discharge mechanism 7 can discharge the accumulated wheat kernels within the hopper 6 and direct them toward the outlet of the precipitation and conditioning tower 10. The lower end of the precipitation and conditioning tower 10 is an inverted conical space.

[0067] One outlet of the three-way flap valve 20 is equipped with a return conveyor 21, which connects to the bucket elevator 21. This interconnects the bucket elevator 21, the dewatering and conditioning tower 10, the three-way flap valve 20, and the return conveyor 21, forming a drying and conditioning cycle. During operation, if the material does not meet the dewatering and conditioning quality requirements, it is returned to the dewatering and conditioning tower 10 via the return conveyor 21 and bucket elevator 21 for a cycle of dewatering and conditioning. This effectively stirs the wheat kernels and improves drying uniformity until the desired drying result is achieved. Only when the material meets the dewatering and conditioning quality requirements will it enter the subsequent twisting and forming device 22 for twisting.

[0068] In order to transport the materials that meet the precipitation and tempering quality requirements to the twisting and forming device 22, a belt conveyor 3 23 is arranged backward from the other outlet of the three-way flap valve 20 to connect the twisting and forming device 22, the quick-freezing tunnel cooler 26 and the packaging conveyor 27 in sequence, that is, the twisting and forming device 22, the quick-freezing tunnel cooler 26 and the packaging conveyor 27 are connected in sequence front to back.

[0069] The twist forming device 22 is used for spiral extrusion of twisted wheat kernels. The moisture content of the wheat kernels entering the twist forming device 22 is 45%. The twist forming device 22 is a conical screw extruder structure. The outlet of the twist forming device 22 is provided with a forming disk 142 with a plurality of forming holes 141. The forming holes 141 are circular or square. In this embodiment, the forming holes 141 are circular holes. The twist forming device 22 is used to prepare the wheat kernels. After the wheat kernels are extruded and passed through the forming disk 142, the wheat kernels are formed into round strips. After the twisted wheat kernels are formed, they are cooled in a quick-freezing tunnel cooler 26. The cooled wheat kernels are then transported to the packaging production line via a packaging conveyor 27 for packaging.

[0070] like Figure 7 As shown, the continuous production process of highland barley and green wheat kernel twisting includes the following processing steps:

[0071] Step 1, adding raw materials: pouring a certain amount of shelled wheat kernel raw materials onto the belt conveyor 1, the belt conveyor 1 and the bucket elevator 4 are running to convey all the wheat kernels to the cooking and maturation tower 2 for accumulation.

[0072] There is a material level sensor in the tower to control the belt conveyor 1 to stop in advance. After the material in the bucket elevator 4 is completely transported, the wheat kernel stacking height can reach the set material level. At this time, it is ensured that there is no material in the bucket elevator 4.

[0073] Step 2, withering, steaming and maturation: while feeding the material into the steaming and maturation tower 2, set the pressure in the steam heating pipe 51 to 0.6-0.8 MPa and the steam temperature in the steam heating pipe 51 to 120°C to wither and steam the accumulated wheat kernels to mature them, and the cooking time is 20 minutes.

[0074] At the same time, the three-way flap valve 8 is controlled to connect to the return conveyor 9, ensuring that the discharge mechanism 7 in the tower maintains a slow and uniform discharge. This means that the material enters the tower, is cooked, and is discharged simultaneously. Due to the high capacity of the bucket elevator 4 and the slow operation of the discharge mechanism 7, the wheat kernels can accumulate within the tower. After discharge, the wheat kernels immediately flow out of the bottom outlet of the cooking and maturation tower 2 and re-enter the tower via the bucket elevator 4 for another cooking and maturation cycle. This completes a cooking cycle, maintaining constant steam pressure and temperature. The purpose of the cooking cycle is to return the material initially entering the tower to the cooking and maturation tower 2 if it fails to meet the cooking and maturation requirements.

[0075] Multiple temperature and humidity sensors are installed from top to bottom within cooking and maturation tower 2 to monitor the temperature of the material and the humidity of the humid atmosphere within the tower. Based on these data, the system determines whether the wheat kernels have met the required maturation quality, which is a moisture content of 70%. If this is not the case, the material continues to steam and cook. If it does, three-way flap valve 1 (8) is connected to belt conveyor 2 (12), allowing the wheat kernels, with a moisture content of 70%, to flow onto belt conveyor 2 (12) for the next process step.

[0076] Step 3: Initial transfer of raw materials: The belt conveyor 2 12 and the bucket elevator 2 11 are operated to convey all the wheat kernels with a moisture content of 70% in the cooking and maturation tower 2 to the precipitation and tempering tower 10 for accumulation; then, steps 1-2 are repeated to continue adding raw materials to the cooking and maturation tower 2 and cooking.

[0077] Step 4, drying and conditioning: while feeding the material into the precipitation conditioning tower 10, start the heat pump unit 16, set the outlet air temperature of the heat pump unit 16 to 60-75°C, and evenly distribute the hot air through multiple air outlet ventilation sections 132 to precipitate and dry the accumulated wheat kernels. The drying time is 4 hours.

[0078] At the same time, the three-way flap valve 20 is controlled to communicate with the return conveyor 21, and the discharge mechanism 7 in the tower maintains a slow and uniform discharge. That is, the material enters the tower, is dried, and is discharged. The discharged wheat kernels then flow out of the bottom outlet of the precipitation and conditioning tower 10, pass through the bucket elevator 2 11, and re-enter the precipitation and conditioning tower 10 for further drying and precipitation, thus completing a drying cycle. The original drying temperature is maintained at this point. The purpose of the drying cycle is to achieve a slow and continuous discharge of material through the uniform discharge mechanism. If the material initially entering the tower fails to meet the precipitation and conditioning requirements, it must return to the precipitation and conditioning tower 10 for re-precipitation and conditioning.

[0079] The precipitation-conditioning tower 10 is equipped with multiple temperature and humidity sensors from top to bottom, as well as a material level sensor at the top. Data from these sensors is used to determine whether the wheat kernels meet the precipitation-conditioning quality requirements, which require a moisture content of 45%. If this is not the case, the material continues to circulate through precipitation drying. If it does, the three-way flap valve 20 is connected to the belt conveyor 3 23, allowing the wheat kernels, with a moisture content of 45%, to flow onto the belt conveyor 3 23.

[0080] Step 5: Transfer the raw materials again: The belt conveyor 3 23 continuously transports the wheat kernels with a moisture content of 45% in the precipitation and tempering tower 10 to the twisting and forming device 22.

[0081] Step 6, twisting and forming: Start the twisting and forming device 22, and the conical spiral shaft continuously pushes and squeezes the wheat kernels, and the wheat kernels are twisted into long round strips after passing through the forming disk 142.

[0082] Step 7, quick freezing and packaging: The long round strips of twisted yarn enter the quick freezing tunnel cooling machine 26, and the operating temperature is set to -18~-30℃. The twisted yarn is cooled in this environment until the twist core reaches -18℃ and is sent out. Finally, it is transported to the packaging production line on the packaging conveyor 27 for packaging.

[0083] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. Green wheat kernel twisting continuous production equipment, characterized by: It includes a cooking and cooking device, a precipitation and tempering device, a twisting and forming device (22), a quick-freezing tunnel cooler (26) and a packaging conveyor (27) which are connected in sequence; The cooking and maturation device comprises a belt conveyor (1), a bucket elevator (4), and a cooking and maturation tower (2) connected in sequence, and a three-way flap valve (8) connected to the outlet of the cooking and maturation tower (2); The cooking and maturation tower (2) is evenly provided with multiple layers of steam heating pipes (51), and a main steam pipeline (52) is connected between the multiple layers of steam heating pipes (51). A uniform discharge device is provided at the bottom of the cooking and maturation tower (2), and an outlet of the three-way flap valve (8) is provided with a return conveyor (9) to connect to a bucket elevator (4). The precipitation and conditioning device comprises a second belt conveyor (12), a second bucket elevator (11) and a precipitation and conditioning tower (10) connected in sequence, a second three-way flap valve (20) connected to the outlet of the precipitation and conditioning tower (10), and a heat pump unit (16); The other outlet of the three-way flap valve 1 (8) is connected to the belt conveyor 2 (12). The precipitation and conditioning tower (10) is provided with multiple layers of ventilation nodes. The ventilation node on the bottom layer is connected to the heat supply outlet of the heat pump unit (16), and the ventilation node on the top layer is connected to the return air outlet of the heat pump unit (16). A uniform discharge device is provided at the bottom of the precipitation and conditioning tower (10). One outlet of the three-way flap valve 2 (20) is provided with a return conveyor 2 (21) to connect to the bucket elevator 2 (11). The other outlet of the three-way flap valve 2 (20) is provided with a belt conveyor 3 (23) to connect to the twisting and forming device (22), the quick-freezing tunnel cooling machine (26) and the packaging conveyor (27) in sequence.

2. The green wheat kernel twisting continuous production equipment according to claim 1, characterized in that: The multiple layers of steam heating pipes (51) are arranged at intervals in the upper and lower layers, and the number of steam heating pipes (51) in each layer is multiple. The steam heating pipes (51) are provided with steam spray holes to discharge steam to sterilize, cook and mature the materials. The main steam pipeline (52) is arranged outside the cooking and maturation tower (2), and the main steam pipeline (52) is connected to a steam generator.

3. The green wheat kernel twisting continuous production equipment according to claim 1, characterized in that: A dehumidification fan (3) is provided on the top of the cooking and maturing tower (2) to remove excess humid gas during the working process.

4. The green wheat kernel twisting continuous production equipment according to claim 1, characterized in that: The uniform discharge device in the cooking and maturing tower (2) is the same as the uniform discharge device in the precipitation and tempering tower (10), and the uniform discharge device includes a continuously bent "W"-shaped collecting hopper (6) and a discharge mechanism (7) provided at the outlet of the collecting hopper (6); The lower end of the collecting hopper (6) is provided with a plurality of outlets spaced apart, and the plurality of outlets correspond to each other in pairs. The discharge mechanism (7) comprises a discharge roller (72) and a discharge motor (71). A discharge roller (72) is rotatably provided at each outlet position. A chain transmission is provided between the discharge motor (71) and the plurality of discharge rollers (72). The discharge motor (71) is arranged outside the cooking and maturation tower (2), and the discharge rollers (72) at a group of two outlet positions rotate in opposite directions.

5. The green wheat kernel twisting continuous production equipment according to claim 1, characterized in that: The bucket elevator (4), the cooking and aging tower (2), the three-way flap valve (8) and the return conveyor (9) are connected end to end in sequence to form a cooking and aging cycle.

6. The green wheat kernel twisting continuous production equipment according to claim 1, characterized in that: The ventilation section comprises two layers of air inlet ventilation sections (131) and air outlet ventilation sections (132) arranged at intervals in the upper and lower layers. The number of the air inlet ventilation sections (131) and the air outlet ventilation sections (132) are both arranged at intervals in the transverse direction. A gap exists between two adjacent air inlet ventilation sections (131) or air outlet ventilation sections (132) to form a material channel (15).

7. The green wheat kernel twisting continuous production equipment according to claim 6, characterized in that: The air inlet ventilation section (131) is a rectangular cavity structure, the top of the air inlet ventilation section (131) is narrowed in a "∧" shape, and both side surfaces of the air inlet ventilation section (131) are hollow surfaces. The air outlet ventilation section (132) has the same structure as the air inlet ventilation section (131); An air inlet pipe (18) is provided between the plurality of air inlet ventilation sections (131) to connect to the return air outlet of the heat pump unit (16), and an air outlet pipe (17) is provided between the plurality of air outlet ventilation sections (132) to connect to the heat supply outlet of the heat pump unit (16). The air inlet pipe (18) and the air outlet pipe (17) are both arranged outside the precipitation conditioning tower (10).

8. The green wheat kernel twisting continuous production equipment according to claim 1, characterized in that: The bucket elevator 2 (11), the precipitation conditioning tower (10), the three-way flap valve 2 (20) and the return conveyor 2 (21) are connected end to end in sequence to form a drying conditioning cycle.

9. The green wheat kernel twisting continuous production equipment according to claim 1, characterized in that: The twisting and forming device (22), the quick-freezing tunnel cooling machine (26) and the packaging conveyor (27) are connected in sequence. The twisting and forming device (22) is a conical screw extruder structure. The outlet of the twisting and forming device (22) is provided with a forming disk (142) with a plurality of forming holes (141). The forming holes (141) are either circular or square.

10. The production process of the green wheat kernel twisting continuous production equipment according to any one of claims 1 to 9, characterized in that: The production process comprises the following processing steps: Step 1, adding raw materials: pouring a certain amount of shelled wheat kernel raw materials onto belt conveyor 1 (1), and belt conveyor 1 (1) and bucket elevator 1 (4) transport all the wheat kernels to the cooking and maturation tower (2) for accumulation; a material level sensor is provided in the tower to control belt conveyor 1 (1) to stop in advance, and wait until the material in bucket elevator 1 (4) is completely transported and the wheat kernel accumulation height reaches the set material level; Step 2, withering, steaming and maturation: while feeding the material into the steaming and maturation tower (2), set the pressure in the steam heating pipe (51) to 0.6-0.8 MPa and the steam temperature in the steam heating pipe (51) to 120°C to wither and steam the accumulated wheat kernels to mature them, with the steaming time being 20 minutes; At the same time, the three-way flap valve (8) is controlled to be connected to the return conveyor (9), and the discharge mechanism (7) in the tower always maintains slow and uniform discharge. The wheat kernel then flows out from the bottom outlet of the cooking and maturation tower (2) and re-enters the tower through the bucket elevator (4) to be cooked and maturated again. At this time, the steam pressure and steam temperature are maintained unchanged. A plurality of temperature and humidity sensors are arranged from top to bottom in the cooking and maturation tower (2). Based on the data monitored by the temperature and humidity sensors in the tower, it is judged whether the wheat kernels have reached the maturation quality requirements. If the requirements have not been met, the material is still circulated for cooking. If the requirements have been met, the three-way flap valve (1) is controlled to be connected to the belt conveyor (12), and the wheat kernels with a moisture content of 70% flow onto the belt conveyor (12). Step 3, first transfer of raw materials: The second belt conveyor (12) and the second bucket elevator (11) transport all the wheat kernels with a moisture content of 70% in the cooking and maturation tower (2) to the precipitation and tempering tower (10) for accumulation; then repeat steps 1-2 to continue adding raw materials to the cooking and maturation tower (2) and cooking; Step 4, drying and conditioning: while feeding the material into the precipitation conditioning tower (10), start the heat pump unit (16), set the outlet air temperature of the heat pump unit (16) to 60-75°C, and evenly distribute the hot air through the multiple outlet ventilation sections (132) to precipitate and dry the accumulated wheat kernels. The drying time is 4 hours; At the same time, the three-way flap valve 2 (20) is controlled to be connected to the return conveyor 2 (21), and the discharge mechanism (7) in the tower always maintains slow and uniform discharge. The wheat kernels then flow out from the bottom outlet of the precipitation and conditioning tower (10) and re-enter the precipitation and conditioning tower (10) through the bucket elevator 2 (11) to be dried and precipitated again. At this time, the original drying temperature is maintained unchanged. A plurality of temperature and humidity sensors are arranged from top to bottom in the precipitation conditioning tower (10), as well as a material level sensor at the top of the tower. Based on the data monitored by the temperature and humidity sensors in the tower, it is determined whether the wheat kernels meet the precipitation conditioning quality requirements. If the requirements are not met, the material is still circulated for precipitation drying. If the precipitation conditioning quality requirements are met, the three-way flap valve 2 (20) is controlled to be connected to the belt conveyor 3 (23), and the wheat kernels with a moisture content of 45% flow onto the belt conveyor 3 (23); Step 5: Transferring the raw materials again: The belt conveyor 3 (23) continuously transports the wheat kernels with a moisture content of 45% in the precipitation and tempering tower (10) to the twisting and forming device (22); Step 6, twisting and forming: starting the twisting and forming device (22), the conical spiral shaft continuously pushes and squeezes the wheat kernel, and the wheat kernel is twisted into an oblong strip after passing through the forming disk (142); Step 7, quick freezing and packaging: The long round strips of twisted yarn are then put into the quick freezing tunnel cooling machine (26), and the operating temperature is set to -18~-30℃. The twisted yarn is cooled in this environment until the twist core reaches -18℃ and is sent out. Finally, it is transported to the packaging production line on the packaging conveyor (27) for packaging.

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