A high-temperature steam sterilization equipment for grain

Abstract

This invention relates to the field of grain processing technology, specifically to a high-temperature steam sterilization device for grains. The device includes a frame, a steam treatment unit, a sterilization unit, and a gas guide pipe. The steam treatment unit is fixedly mounted on the frame and is used for pressurizing and recovering high-temperature steam. The sterilization unit is fixedly mounted on top of the frame and located to one side of the steam treatment unit, and is used for high-temperature steam sterilization of the grains. The gas guide pipe is fixedly installed between the steam treatment unit and the sterilization unit. As the piston continues to move upward, it compresses the high-temperature steam in the upper part of the steam transfer tank. Finally, the compressed high-temperature steam enters the sterilization unit through the valve body and the gas guide pipe to sterilize the grains. Simultaneously, due to the compression action of the piston, the pressure inside the sterilization tank increases after the high-temperature steam enters, resulting in better penetration between grain particles and thus improving the overall sterilization quality.

Description

Technical Field

[0001] This invention relates to the field of grain processing technology, specifically to a high-temperature steam sterilization device for grain. Background Technology

[0002] Grain steam sterilization involves placing the grain product to be sterilized in a sealed, pressure-controlled sterilizer. The water in the sterilizer's compartment is heated to boiling, generating steam. The steam rapidly expels the cold air inside the sterilizer through the exhaust valve. The exhaust valve is then closed, and heating continues. Because the steam cannot escape, the pressure inside the sterilizer increases, raising the boiling point to a temperature above 100°C. This causes the bacterial proteins to coagulate and denature, thus achieving sterilization.

[0003] According to a Chinese patent application with publication number 202310122804.8, a continuous steam-microwave combined sterilization device for raisins is disclosed. The device uses air-blowing brushes to remove sand and dust trapped on the raisins, thus ensuring the quality and efficiency of sterilization. However, this sterilization device uses the natural pressure flow of high-temperature steam for sterilization, and the penetration of high-temperature steam is limited. Therefore, the sterilization effect near the edge of the brush is small, and the sterilization effect in the area far from the brush is not ideal, making it difficult to achieve deep sterilization in a short time. To address these issues, we propose a high-temperature steam sterilization device for grains. Summary of the Invention

[0004] This invention provides the following technical solution: a high-temperature steam sterilization device for grain, comprising:

[0005] Profile frame;

[0006] The steam treatment unit is fixedly mounted on the profile frame and is used for high-temperature steam pressurization and recovery.

[0007] The sterilization unit is fixedly installed on the top of the profile frame and located on one side of the steam treatment unit, and is used for high-temperature steam sterilization of grains;

[0008] The air duct is fixedly installed between the steam treatment unit and the sterilization unit for the transmission of high-temperature steam between the two units.

[0009] As a preferred embodiment of the present invention, the steam treatment unit includes:

[0010] The steam transfer tank is fixedly installed on the top of the profile frame;

[0011] The tray is slidably installed inside the steam transfer tank;

[0012] One ventilation hole is equally angled and runs through the top of the tray;

[0013] The piston is rotatably mounted on top of the tray;

[0014] The second vent hole is opened at an equal angle through the top of the piston;

[0015] A top rod is fixedly installed at the center of the bottom of the tray, penetrates the inside of the steam transfer tank, and extends to the bottom of the steam transfer tank. The top rod is slidably connected to the steam transfer tank through a sliding connector.

[0016] The mounting plate is fixedly installed on the top of the profile frame;

[0017] The hydraulic cylinder is fixedly installed at the bottom of the mounting plate. The output rod of the hydraulic cylinder moves through the interior of the mounting plate, and the top of the output rod is fixedly connected to the bottom of the push rod.

[0018] As a preferred embodiment of the present invention, the steam treatment unit further includes:

[0019] A guide seat is fixedly installed on the inner side of the bottom of the steam transfer tank and located around the top rod. The guide seat and the top rod are concentric.

[0020] Two guide grooves are formed on the outer wall of the guide seat, and the two guide grooves are diagonally distributed about the center of the guide seat.

[0021] Two levers are fixedly installed at the bottom of the piston, and the two levers are diagonally distributed about the center of the piston.

[0022] Guide wheels are rotatably mounted on the bottom of the two levers, and the positions of the two guide wheels correspond one-to-one with the positions of the two guide grooves.

[0023] As a preferred embodiment of the present invention, the steam treatment unit further includes:

[0024] Two arc-shaped grooves are formed at the bottom of the piston. The two arc-shaped grooves are symmetrically distributed about the center of the piston, and the two guide wheels are concentric with the piston.

[0025] Arc-shaped groove 2 is formed on the top of the pallet, and its quantity and specifications are compatible with arc-shaped groove 1. The two pallets are respectively located at the bottom of the two arc-shaped grooves 1.

[0026] Arc-shaped slider one and arc-shaped slider two are both slidably installed inside the two ends of arc-shaped groove one and arc-shaped groove two;

[0027] An arc-shaped spring is fixedly installed between arc-shaped slider one and arc-shaped slider two.

[0028] As a preferred embodiment of the present invention, the steam treatment unit further includes:

[0029] Two arc-shaped guide grooves are formed through the bottom of the tray, and the inner walls of the two arc-shaped guide grooves are slidably connected to the outer walls of the two levers, respectively.

[0030] As a preferred embodiment of the present invention, the steam treatment unit further includes:

[0031] The valve body is fixedly installed on the top of the steam transfer tank, and the bottom of the valve body is in communication with the top of the steam transfer tank;

[0032] A conical cavity is formed on the inner wall of the valve body, and the diameter of the conical cavity gradually increases upwards;

[0033] The valve ball is movably positioned inside the conical cavity;

[0034] A return spring is fixedly installed between the inner wall of the top of the conical cavity and the top of the valve ball;

[0035] The cable is fixedly installed at the bottom of the return spring;

[0036] An air supply pipe is fixedly installed on the top of the piston, and the top of the piston is fixedly connected to the bottom of the cable.

[0037] As a preferred embodiment of the present invention, the sterilization unit includes:

[0038] The sterilization tank is fixedly installed on the top of the profile frame. The air guide pipe is fixedly installed between the top of the sterilization tank and the top of the valve body, and the interior of the sterilization tank and the interior of the valve body are interconnected through the air guide pipe.

[0039] A stirring rod is rotatably mounted on the inner wall of one end of the sterilization tank;

[0040] Spiral stirring blades are fixedly installed on the outer wall of the stirring rod;

[0041] A geared motor is fixedly installed on the top of the profile frame and located at one end of the sterilization tank. The end of the output shaft of the geared motor is fixedly connected to the end of the spiral stirring blade through a coupling.

[0042] The feed pipe is integrally formed and located at the top of the sterilization tank near the geared motor, and the inside of the feed pipe is interconnected with the inside of the sterilization tank.

[0043] The hopper is fixedly installed at the top of the feed pipe.

[0044] As a preferred embodiment of the present invention, the sterilization unit further includes:

[0045] Sheet metal bracket, fixedly installed on the outer wall of the sterilization tank, located on one side of the feed pipe;

[0046] The stepper motor is fixedly installed on the side of the sheet metal bracket away from the feed pipe;

[0047] A flap is rotatably installed inside the feed pipe. The specifications of the flap are adapted to the internal specifications of the feed pipe. The shaft of the flap is fixedly connected to the output shaft of the stepper motor via a coupling.

[0048] As a preferred embodiment of the present invention, a feeding auger is fixedly installed on the side of the profile frame, the output end of the feeding auger is located at the top of the hopper, a discharging auger is fixedly installed inside the profile frame, and a gate is rotatably installed at the end of the sterilization tank away from the reduction motor via a hinge. A guide trough tile is provided at the bottom of the gate, the guide trough tile is fixed to the top of the profile frame, and the guide trough tile is located at the top of the input end of the discharging auger.

[0049] As a preferred embodiment of the present invention, a gas supply pipe is fixedly installed on the lower part of the outer wall of the steam transfer tank, and the interior of the gas supply pipe is interconnected with the interior of the steam transfer tank. Multiple supports distributed at equal angles are fixedly installed between the bottom of the steam transfer tank and the mounting plate, and the multiple supports are located around the top rod.

[0050] Compared with the prior art, the beneficial effects of the present invention are:

[0051] 1. In this invention, as the piston continues to move upward, it compresses the high-temperature steam in the upper part of the steam transfer tank. Finally, the compressed high-temperature steam enters the sterilization unit through the valve body and the air guide pipe to sterilize the grain with high-temperature steam. At the same time, due to the compression effect of the piston, the high-temperature steam enters the sterilization tank, which increases the pressure inside the sterilization tank, making the penetration effect of the high-temperature steam between the grain particles better, thus improving the overall sterilization quality.

[0052] 2. In this invention, during the downward movement of the piston, the connection between the air supply pipe and the pull cable creates a downward pulling effect on the valve ball, stretching the return spring and accumulating elastic force. Simultaneously, as the valve ball moves downward, it comes into contact with the inner wall of the conical cavity. At this point, the steam inside the steam transfer tank cannot pass through the valve body. After sterilization, the cylinder output rod drives the push rod, tray, and piston downward, drawing the residual heat steam from the sterilization tank into the steam transfer tank through the air supply pipe and the valve body. When the piston reaches the bottom dead center position, the pull cable, following the same principle, pulls the valve... The ball is pulled downwards, causing the outer wall of the valve ball to contact the inner wall of the conical cavity, interrupting the connection between the steam transfer tank and the sterilization tank. Meanwhile, the piston drives the second ventilation port to rotate at a certain angle, causing the second ventilation port to coincide with the position of the first ventilation port again. The high-temperature steam in the lower half of the steam transfer tank mixes with the steam in the upper half of the steam transfer tank through the connection between the first and second ventilation ports, exchanging heat with the residual heat steam drawn into the steam transfer tank. This causes the residual heat steam to heat up rapidly, thereby reducing the heat loss of the high-temperature steam and thus reducing energy consumption. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the structure of the present invention;

[0054] Figure 2 In this invention Figure 1 A schematic diagram of a partial structure;

[0055] Figure 3 This is a side sectional view of the steam transfer tank in this invention;

[0056] Figure 4 This is a side sectional view of the valve body in this invention;

[0057] Figure 5 This is a schematic diagram of the structure where the tray and piston unfold in this invention. Figure 1 ;

[0058] Figure 6 This is a schematic diagram of the structure where the tray and piston unfold in this invention. Figure 2 ;

[0059] Figure 7 This is a schematic diagram of the arc-shaped spring in this invention;

[0060] Figure 8 This is a side sectional view of the sterilization tank in this invention;

[0061] Figure 9 In this invention Figure 8 A magnified structural diagram of part A.

[0062] In the diagram: 100, Profile frame; 200, Steam treatment unit; 201, Steam transfer tank; 202, Tray; 203, Ventilation port one; 204, Piston; 205, Ventilation port two; 206, Push rod; 207, Mounting plate; 208, Hydraulic cylinder; 209, Guide seat; 2010, Guide groove; 2011, Lever; 2012, Guide wheel; 2013, Arc groove one; 2014, Arc groove two; 2015, Arc slider one; 2016, Arc slider two; 2017, Arc spring; 2018, Arc guide groove; 20 19. Valve body; 2020. Conical cavity; 2021. Valve ball; 2022. Return spring; 2023. Cable; 2024. Air supply pipe; 2025. Support column; 300. Sterilization unit; 301. Sterilization tank; 302. Stirring rod; 303. Spiral stirring blade; 304. Gear motor; 305. Feed pipe; 306. Hopper; 307. Sheet metal bracket; 308. Stepper motor; 309. Flip plate; 3010. Guide channel tile; 3011. Gate; 400. Air guide pipe; 500. Feeding auger; 600. Discharge auger. Detailed Implementation

[0063] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] Please see Figures 1-9 The technical solution provided by the present invention specifically includes the following embodiments:

[0065] A high-temperature steam sterilization device for grain includes a profile frame 100, a steam treatment unit 200, a sterilization unit 300, and a gas guide pipe 400. The steam treatment unit 200 is fixedly installed on the profile frame 100 and is used for high-temperature steam pressurization and recovery. The sterilization unit 300 is fixedly installed on the top of the profile frame 100 and located on one side of the steam treatment unit 200, and is used for high-temperature steam sterilization of grain. The gas guide pipe 400 is fixedly installed between the steam treatment unit 200 and the sterilization unit 300 and is used for the transmission of high-temperature steam between the steam treatment unit 200 and the sterilization unit 300.

[0066] For further details, please refer to [link / reference]. Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown:

[0067] The steam processing unit 200 includes a steam transfer tank 201, a tray 202, a first vent 203, a piston 204, a second vent 205, a push rod 206, a mounting plate 207, a hydraulic cylinder 208, a guide seat 209, a guide groove 2010, a lever 2011, a guide wheel 2012, and an arc-shaped guide groove 2018. The steam transfer tank 201 is fixedly mounted on the top of the profile frame 100. The tray 202 is slidably mounted inside the steam transfer tank 201. The first vent 203 is opened at an equal angle through the top of the tray 202. The piston 204 is rotatably mounted on the tray 201. 2. At the top, the second ventilation hole 205 is opened at an equal angle through the top of the piston 204. The push rod 206 is fixedly installed at the bottom center of the tray 202, and passes through the interior of the steam transfer tank 201, extending to the bottom of the steam transfer tank 201. The push rod 206 is slidably connected to the steam transfer tank 201 through a sliding connector. The mounting plate 207 is fixedly installed on the top of the profile frame 100. The hydraulic cylinder 208 is fixedly installed on the bottom of the mounting plate 207. The output rod of the hydraulic cylinder 208 moves through the interior of the mounting plate 207, and the top of the output rod of the hydraulic cylinder 208 is fixedly connected to the bottom of the push rod 206. The guide seat 209 is fixedly installed on the inner side of the bottom of the steam transfer tank 201, and is located around the top rod 206. The guide seat 209 and the top rod 206 are concentric. Two guide grooves 2010 are formed on the outer wall of the guide seat 209, and the two guide grooves 2010 are diagonally distributed about the center of the guide seat 209. Two levers 2011 are fixedly installed on the bottom of the piston 204, and the two levers 2011 are diagonally distributed about the center of the piston 204. Guide wheels 2012 are rotatably installed on the bottom of the two levers 2011 respectively. The positions of the two guide grooves 2010 correspond one-to-one. The arc-shaped guide grooves 2018 are opened through the bottom of the tray 202, and there are two of them. The inner walls of the two arc-shaped guide grooves 2018 are slidably connected to the outer walls of the two levers 2011 respectively. The lower part of the outer wall of the steam transfer tank 201 is fixedly installed with a gas supply pipe 2024. The interior of the gas supply pipe 2024 is interconnected with the interior of the steam transfer tank 201. Multiple supports 2025 are fixedly installed between the bottom of the steam transfer tank 201 and the mounting plate 207. The multiple supports 2025 are located around the top rod 206.

[0068] Specifically, boiler steam is connected to the steam supply pipe 2024 through a pipeline, allowing high-temperature steam to enter the steam transfer tank 201. Initially, the output rod of the cylinder 208 drives the push rod 206, tray 202, and piston 204 to move downwards, positioned at the lower part of the steam transfer tank 201. During the downward movement of the piston 204, it drives the two levers 2011 and two guide wheels 2012 at the bottom to move together until the two guide wheels 2012 enter the two guide grooves 2010 and contact the inner wall of the guide grooves 2010, thereby creating a torque on the piston 204, causing the piston 204 to rotate at a certain angle on the top of the tray 202. When the piston 204 reaches the lower dead center position, the position of the vent 203 overlaps with that of the piston 204. The high-temperature steam inside the steam transfer tank 201 enters the upper part of the steam transfer tank 201 through the vent 203 and the piston 204, allowing sufficient high-temperature steam to accumulate inside the steam transfer tank 201.

[0069] For further details, please refer to [link / reference]. Figure 5 , Figure 6 , Figure 7 As shown:

[0070] The steam treatment unit 200 also includes an arc-shaped groove 1 2013, an arc-shaped groove 2014, an arc-shaped slider 1 2015, an arc-shaped slider 2016, and an arc-shaped spring 2017. The arc-shaped groove 1 2013 is located at the bottom of the piston 204, and there are two of them. The two arc-shaped grooves 1 2013 are symmetrically distributed about the center of the piston 204, and the two guide wheels 2012 are concentric with the piston 204. The arc-shaped groove 2014 is located at the top of the tray 202, and its number and specifications are adapted to the arc-shaped groove 1 2013. The two trays 202 are located at the bottom of the two arc-shaped grooves 1 2013 respectively. The arc-shaped slider 1 2015 and the arc-shaped slider 2 2016 are slidably installed at both ends inside the arc-shaped groove 1 2013 and the arc-shaped groove 2 2014. The arc-shaped spring 2017 is fixedly installed between the arc-shaped slider 1 2015 and the arc-shaped slider 2 2016.

[0071] Specifically, the guide wheel 2012 contacts the inner wall of the guide groove 2010, causing the piston 204 to rotate on top of the tray 202. During this rotation, the piston 204 also drives the two arc-shaped grooves 2013 to rotate together. This, in conjunction with the arc-shaped groove 2014, causes the arc-shaped sliders 2015 and 2016 to move closer together, compressing the arc-shaped spring 2017 and accumulating elastic force. When the steam transfer tank 201 is filled with high-temperature steam, the output rod of the cylinder 208 moves upward, pushing the tray 202 and piston 204 upward together via the push rod 206. The upward movement of the piston 204 causes the two levers 2011 and the two guide wheels 2012 to move together, gradually moving away from the two guide grooves 2010. Therefore, the torque on the piston 204 disappears, and the arc-shaped spring 2017, which is in a stored state,... The release of elasticity opens up the arc-shaped slider 2015 and the arc-shaped slider 2016. The piston 204 drives the multiple ventilation holes 205 to rotate, causing the ventilation holes 205 to be misaligned with the ventilation holes 203. The high-temperature steam in the upper and lower parts of the steam transfer tank 201 is isolated. Therefore, as the piston 204 continues to move upward, it compresses the high-temperature steam in the upper part of the steam transfer tank 201. Finally, the compressed high-temperature steam enters the sterilization unit 300 through the valve body 2019 and the air guide pipe 400 to sterilize the grain with high-temperature steam. At the same time, due to the compression effect of the piston 204, the high-temperature steam enters the sterilization tank 301, which increases the pressure inside the sterilization tank 301, making the penetration effect of the high-temperature steam between the grain particles better, thus improving the overall sterilization quality.

[0072] For further details, please refer to [link / reference]. Figure 3 , Figure 4 As shown:

[0073] The steam processing unit 200 also includes a valve body 2019, a conical cavity 2020, a valve ball 2021, a return spring 2022, a pull cable 2023, and a gas supply pipe 2024. The valve body 2019 is fixedly installed on the top of the steam transfer tank 201, and the bottom of the valve body 2019 is in communication with the top of the steam transfer tank 201. The conical cavity 2020 is opened on the inner wall of the valve body 2019, and the diameter of the conical cavity 2020 gradually increases upward. The valve ball 2021 is movably disposed inside the conical cavity 2020. The return spring 2022 is fixedly installed between the top inner wall of the conical cavity 2020 and the top of the valve ball 2021. The pull cable 2023 is fixedly installed at the bottom of the return spring 2022. The gas supply pipe 2024 is fixedly installed on the top of the piston 204, and the top of the piston 204 is fixedly connected to the bottom of the pull cable 2023.

[0074] Specifically, during the downward movement of piston 204, the connection between air supply pipe 2024 and cable 2023 pulls valve ball 2021 downward, causing return spring 2022 to be stretched and store elastic force. Simultaneously, as valve ball 2021 moves downward, it comes into contact with the inner wall of conical cavity 2020. At this point, steam inside steam transfer tank 201 cannot pass through valve body 2019. After sterilization, the output rod of cylinder 208 drives push rod 206, tray 202, and piston 204 downward, drawing residual steam with heat from sterilization tank 301 into steam transfer tank 201 through air pipe 400 and valve body 2019. When piston 204 moves to the bottom dead center position, the same principle applies. The cable 2023 pulls the valve ball 2021 downwards, causing the outer wall of the valve ball 2021 to contact the inner wall of the conical cavity 2020, interrupting the connection between the steam transfer tank 201 and the sterilization tank 301. Meanwhile, the piston 204 drives the second ventilation port 205 to rotate at a certain angle, so that the second ventilation port 205 coincides with the position of the first ventilation port 203 again. The high-temperature steam in the lower half of the steam transfer tank 201 mixes with the steam in the upper half of the steam transfer tank 201 through the connection between the first ventilation port 203 and the second ventilation port 205. It exchanges heat with the steam with residual heat drawn into the steam transfer tank 201, causing the residual heat steam to heat up rapidly, thereby reducing the heat loss of the high-temperature steam and thus reducing energy consumption.

[0075] For further details, please refer to [link / reference]. Figure 8 , Figure 9 As shown:

[0076] The sterilization unit 300 includes a sterilization tank 301, a stirring rod 302, a spiral stirring blade 303, a geared motor 304, a feed pipe 305, a hopper 306, a sheet metal support 307, a stepper motor 308, and a flapper 309. The sterilization tank 301 is fixedly installed on the top of the profile frame 100. The air guide pipe 400 is fixedly installed between the top of the sterilization tank 301 and the top of the valve body 2019, and the interior of the sterilization tank 301 and the interior of the valve body 2019 are interconnected through the air guide pipe 400. The stirring rod 302 is rotatably installed on the inner wall of one end of the sterilization tank 301, and the spiral stirring blade 303 is fixedly installed on the outer wall of the stirring rod 302. The geared motor 304 is fixedly installed on the top of the profile frame 100 and located at one end of the sterilization tank 301. The output shaft end is fixedly connected to the end of the spiral stirring blade 303 via a coupling. The feed pipe 305 is integrally formed and set at the top of the sterilization tank 301 near the end of the geared motor 304. The inside of the feed pipe 305 is connected to the inside of the sterilization tank 301. The hopper 306 is fixedly installed on the top of the feed pipe 305. The sheet metal bracket 307 is fixedly installed on the outer wall of the sterilization tank 301 and located on one side of the feed pipe 305. The stepper motor 308 is fixedly installed on the side of the sheet metal bracket 307 away from the feed pipe 305. The flip plate 309 is rotatably installed inside the feed pipe 305. The specifications of the flip plate 309 are adapted to the internal specifications of the feed pipe 305. The shaft of the flip plate 309 is fixedly connected to the output shaft of the stepper motor 308 via a coupling.

[0077] A feeding auger 500 is fixedly installed on the side of the profile frame 100. The output end of the feeding auger 500 is located at the top of the hopper 306. A discharging auger 600 is fixedly installed inside the profile frame 100. A gate 3011 is installed at the end of the sterilization tank 301 away from the reduction motor 304 via a hinge. A guide trough tile 3010 is provided at the bottom of the gate 3011. The guide trough tile 3010 is fixed to the top of the profile frame 100 and is located at the top of the input end of the discharging auger 600.

[0078] Specifically, the feeding auger 500 conveys grain into the hopper 306. When the hopper 306 is full, the feeding auger 500 stops conveying grain, and the output shaft of the stepper motor 308 drives the flap 309 to rotate to a vertical angle. Under the action of gravity, the grain inside the hopper 306 falls into the sterilization tank 301 through the feed pipe 305. Then, the output shaft of the stepper motor 308 drives the flap 309 to rotate to a horizontal angle, closing the feed pipe 305. The feeding auger 500 then conveys grain into the hopper 306 again. The piston 204 moves upward, and the high-temperature steam inside the steam transfer tank 201 is conveyed to the sterilization tank 301 through the valve body 2019 and the air guide pipe 400. The grain inside the sterilization tank 301 is sterilized by high-temperature steam. During the sterilization process, the output shaft of the geared motor 304 drives the stirring rod 302 and the spiral stirring blade 303 to rotate, which stirs the grain inside the sterilization tank 301 and helps to improve the consistency of grain sterilization. After sterilization, the gate 3011 is opened. The sterilized grain inside the sterilization tank 301 moves along the inner wall of the sterilization tank 301 towards the direction closer to the sterilization tank 301 under the spiral thrust generated by the rotation of the spiral stirring blade 303. Finally, it enters the input end of the unloading auger 600 through the guiding effect of the guide trough tile 3010 and is transported out by the unloading auger 600. After the sterilization tank 301 is emptied, the gate 3011 is closed again.

[0079] This solution describes a high-temperature steam sterilization equipment for grain, which operates through the following processes:

[0080] During feeding, the feeding auger 500 conveys the grain into the hopper 306. When the hopper 306 is full of grain, the feeding auger 500 stops conveying, and the output shaft of the stepper motor 308 drives the flap 309 to rotate to a vertical angle. Under the action of gravity, the grain inside the hopper 306 falls into the sterilization tank 301 through the feed pipe 305. After that, the output shaft of the stepper motor 308 drives the flap 309 to rotate to a horizontal angle, closing the feed pipe 305. The feeding auger 500 then conveys the grain into the hopper 306 again.

[0081] During high-temperature sterilization, boiler steam is connected to the steam supply pipe 2024 via a pipeline, allowing high-temperature steam to enter the steam transfer tank 201. Initially, the output rod of the hydraulic cylinder 208 drives the push rod 206, tray 202, and piston 204 to move downwards, positioning them at the lower part of the steam transfer tank 201. As the piston 204 moves downwards, it drives the two bottom levers 2011 and two guide wheels 2012 to move together until the two guide wheels 2012 enter the two guide grooves 2010 and contact the inner wall of the guide grooves 2010, thereby creating a torque on the piston 204. This causes the piston 204 to rotate at a certain angle on top of the tray 202. The rotation of the piston 204 drives the two arc-shaped grooves 2013 to rotate together, thus interacting with the arc-shaped groove 2014. With the cooperation of the two components, the arc-shaped slider 2015 and the arc-shaped slider 2016 move closer together, thereby compressing the arc-shaped spring 2017 to store elastic force. When the piston 204 reaches the bottom dead center position, the positions of the vent hole 203 and the piston 204 overlap. The high-temperature steam inside the steam transfer tank 201 enters the upper part of the steam transfer tank 201 through the vent hole 203 and the piston 204. During the downward movement of the piston 204, the valve ball 2021 is pulled downward through the connection of the air supply pipe 2024 and the cable 2023. The return spring 2022 is stretched and stores elastic force. At the same time, the valve ball 2021 moves downward and will fit against the inner wall of the conical cavity 2020. At this time, the steam inside the steam transfer tank 201 cannot pass through. Inside valve body 2019, when the steam transfer tank 201 is filled with high-temperature steam, the output rod of cylinder 208 moves upward, pushing tray 202 and piston 204 upward together via push rod 206. The upward movement of piston 204 causes two levers 2011 and two guide wheels 2012 to move together, gradually moving away from the two guide grooves 2010. Therefore, the torque on piston 204 disappears, and the arc spring 2017, which is in a stored state, releases its elasticity, opening arc slider one 2015 and arc slider two 2016. Piston 204 drives multiple ventilation holes two 205 to rotate, causing ventilation holes two 205 to misalign with ventilation hole one 203. The high-temperature steam in the upper and lower parts of the steam transfer tank 201 is isolated. Therefore, piston 204... 4. As the steam continues to move upward, the high-temperature steam in the upper part of the steam transfer tank 201 is compressed into the valve body 2019. Meanwhile, the piston 204 moves upward, causing the bottom of the cable 2023 to move upward through the air supply pipe 2024. The tension force on the valve ball 2021 disappears, and the elastic force of the conical cavity 2020, which is under tension storage, is released, lifting the valve ball 2021 upward. Finally, the high-temperature steam passes through the gap between the conical cavity 2020 and the valve ball 2021, passes through the valve body 2019, and is then transported to the sterilization tank 301 through the air guide pipe 400 for high-temperature sterilization of the grain inside the sterilization tank 301. Simultaneously, due to the compression effect of the piston 204, the high-temperature steam entering the sterilization tank 301 causes an increase in the internal pressure.This allows for better penetration of high-temperature steam between grain particles, thus improving the overall sterilization quality. During sterilization, the output shaft of the geared motor 304 drives the stirring rod 302, along with the spiral stirring blades 303, to rotate, stirring the grain inside the sterilization tank 301 and improving the consistency of grain sterilization.

[0082] After sterilization, the output rod of cylinder 208 drives the push rod 206, tray 202, and piston 204 to move downwards, drawing the residual heat steam inside sterilization tank 301 into steam transfer tank 201 through air pipe 400 and valve body 2019. When piston 204 moves to the bottom dead center position, the cable 2023 pulls valve ball 2021 downwards, causing the outer wall of valve ball 2021 to contact the inner wall of conical cavity 2020, interrupting the connection between steam transfer tank 201 and sterilization tank 301. Meanwhile, piston 204 drives ventilation port 205 to rotate a certain angle, causing ventilation port 205 to re-align with ventilation port 203. The high-temperature steam in the lower half of steam transfer tank 201 then flows through the connection between ventilation port 203 and ventilation port 205. Steam in the upper part of the steam transfer tank 201 mixes with the residual heat steam drawn into the steam transfer tank 201, exchanging heat to rapidly heat up the residual heat steam, thereby reducing heat loss from the high-temperature steam and thus reducing energy consumption. During the heat exchange, the gate 3011 is opened, and the grain that has been sterilized inside the sterilization tank 301 moves along the inner wall of the sterilization tank 301 towards the sterilization tank 301 under the spiral thrust generated by the rotation of the spiral stirring plate 303. Finally, it enters the input end of the unloading auger 600 through the guiding effect of the guide trough tile 3010 and is transported out by the unloading auger 600. After the sterilization tank 301 is emptied, the gate 3011 is closed again. Then, the above process is repeated to achieve continuous sterilization treatment of the grain.

[0083] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A high-temperature steam sterilization device for grain, characterized in that: include: Profile frame (100); A steam treatment unit (200) is fixedly mounted on a profile frame (100) and is used for high-temperature steam pressurization and recovery; The sterilization unit (300) is fixedly installed on the top of the profile frame (100) and located on one side of the steam treatment unit (200) for high-temperature steam sterilization of grain; A gas duct (400) is fixedly installed between the steam treatment unit (200) and the sterilization unit (300) for the transmission of high-temperature steam between the steam treatment unit (200) and the sterilization unit (300); The steam treatment unit (200) includes: A steam transfer tank (201) is fixedly installed on top of the profile frame (100); The tray (202) is slidably installed inside the steam transfer tank (201); Ventilation vent 1 (203) is opened at an equal angle through the top of the tray (202); Piston (204) is rotatably mounted on top of tray (202); Vent hole 2 (205) is opened at an equal angle through the top of piston (204); The top rod (206) is fixedly installed at the center of the bottom of the tray (202), and passes through the inside of the steam transfer tank (201) and extends to the bottom of the steam transfer tank (201). The top rod (206) is slidably connected to the steam transfer tank (201) through a sliding connector. Mounting plate (207) is fixedly installed on top of profile frame (100); The hydraulic cylinder (208) is fixedly installed at the bottom of the mounting plate (207). The output rod of the hydraulic cylinder (208) moves through the interior of the mounting plate (207), and the top of the output rod of the hydraulic cylinder (208) is fixedly connected to the bottom of the top rod (206). The guide seat (209) is fixedly installed on the inner side of the bottom of the steam transfer tank (201) and located around the top rod (206). The guide seat (209) and the top rod (206) are concentric. Two guide grooves (2010) are formed on the outer wall of the guide seat (209), and the two guide grooves (2010) are diagonally distributed about the center of the guide seat (209); Two levers (2011) are fixedly installed at the bottom of the piston (204), and the two levers (2011) are diagonally distributed about the center of the piston (204). Guide wheels (2012) are rotatably installed at the bottom of two levers (2011), and the positions of the two guide wheels (2012) correspond one-to-one with the positions of the two guide grooves (2010); Two arc-shaped grooves (2013) are formed at the bottom of the piston (204). The two arc-shaped grooves (2013) are symmetrically distributed about the center of the piston (204), and the two guide wheels (2012) are concentric with the piston (204). Arc-shaped groove 2 (2014) is opened on the top of the tray (202), and its quantity and specifications are adapted to arc-shaped groove 1 (2013). The two trays (202) are respectively located at the bottom of the two arc-shaped grooves 1 (2013); Arc-shaped slider one (2015) and arc-shaped slider two (2016) are both slidably installed at both ends inside arc-shaped groove one (2013) and arc-shaped groove two (2014); An arc spring (2017) is fixedly installed between arc slider one (2015) and arc slider two (2016); Two arc-shaped guide grooves (2018) are formed through the bottom of the tray (202), and the inner walls of the two arc-shaped guide grooves (2018) are slidably connected to the outer walls of the two levers (2011); The valve body (2019) is fixedly installed on the top of the steam transfer tank (201), and the bottom of the valve body (2019) is in communication with the top of the steam transfer tank (201); A conical cavity (2020) is formed on the inner wall of the valve body (2019), and the diameter of the conical cavity (2020) gradually increases upward; The valve ball (2021) is movably disposed inside the conical cavity (2020); A return spring (2022) is fixedly installed between the top inner wall of the conical cavity (2020) and the top of the valve ball (2021); The cable (2023) is fixedly installed at the bottom of the return spring (2022); An air supply pipe (2024) is fixedly installed on the top of a piston (204), and the top of the piston (204) is fixedly connected to the bottom of a cable (2023).

2. The grain high-temperature steam sterilization equipment according to claim 1, characterized in that: The sterilization unit (300) includes: The sterilization tank (301) is fixedly installed on the top of the profile frame (100), and the air guide pipe (400) is fixedly installed between the top of the sterilization tank (301) and the top of the valve body (2019), and the interior of the sterilization tank (301) and the interior of the valve body (2019) are interconnected through the air guide pipe (400); A stirring rod (302) is rotatably mounted on the inner wall of one end of the sterilization tank (301); The spiral stirring blade (303) is fixedly installed on the outer wall of the stirring rod (302); A geared motor (304) is fixedly installed on the top of the profile frame (100) and located at one end of the sterilization tank (301). The output shaft end of the geared motor (304) is fixedly connected to the end of the spiral stirring blade (303) by a coupling. The feed pipe (305) is integrally formed and located at one end of the top of the sterilization tank (301) near the geared motor (304), and the inside of the feed pipe (305) is connected to the inside of the sterilization tank (301); The hopper (306) is fixedly installed on the top of the feed pipe (305).

3. The high-temperature steam sterilization equipment for grain according to claim 2, characterized in that: The sterilization unit (300) further includes: Sheet metal bracket (307) is fixedly installed on the outer wall of sterilization tank (301) and located on one side of feed pipe (305); A stepper motor (308) is fixedly installed on the side of the sheet metal bracket (307) away from the feed pipe (305); A flap (309) is rotatably installed inside the feed pipe (305). The specifications of the flap (309) are adapted to the internal specifications of the feed pipe (305). The shaft of the flap (309) is fixedly connected to the output shaft of the stepper motor (308) through a coupling.

4. The grain high-temperature steam sterilization equipment according to claim 3, characterized in that: A feeding auger (500) is fixedly installed on the side of the profile frame (100). The output end of the feeding auger (500) is located at the top of the hopper (306). A discharging auger (600) is fixedly installed inside the profile frame (100). A gate (3011) is installed at the end of the sterilization tank (301) away from the reduction motor (304) via a hinge. A guide channel tile (3010) is provided at the bottom of the gate (3011). The guide channel tile (3010) is fixed at the top of the profile frame (100) and is located at the top of the input end of the discharging auger (600).

5. The grain high-temperature steam sterilization equipment according to claim 4, characterized in that: A gas supply pipe (2024) is fixedly installed on the lower part of the outer wall of the steam transfer tank (201). The interior of the gas supply pipe (2024) is connected to the interior of the steam transfer tank (201). Multiple support columns (2025) are fixedly installed between the bottom of the steam transfer tank (201) and the mounting plate (207). The multiple support columns (2025) are located around the top rod (206).

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