An apparatus and process for ordered conditioning and milling of rice

Abstract

The present invention discloses an apparatus and process for orderly tempering rice milling, which relates to the technical equipment field of grain rice milling and includes: a tempering bin arranged on a frame, with an inlet provided at the upper part of the tempering bin; a water mist mixing mechanism connected to the inlet; a hopper communicating with the lower part of the tempering bin. The hopper is conical, and a plurality of orderly channels are evenly arranged along the circumferential direction on the inner surface of the hopper. The guide pins in adjacent two rows are arranged staggeredly. The lower end outlet of the orderly channel communicates with the bottom opening of the hopper. The distance between the guide pins in the same row is 2 to 3 times the length of the rice grains, and the width of the orderly channel is less than the length of the rice grains. This rice milling apparatus can adjust the moisture on the surface of the rice to the optimal range, which is beneficial to rice hulling. Moreover, it can ensure that the rice enters the rice milling machine in the length direction, which is beneficial to reducing the broken rice rate and rice milling energy consumption and improving the head rice yield.

Description

Technical Field

[0001] The present invention belongs to the field of grain milling technology equipment, and more specifically, relates to a device and process for orderly tempering and milling rice. Background Art

[0002] Currently, rice milling at home and abroad is disorderly. Brown rice or rice during the processing process enters the rice milling machine in a disorderly state relying on gravity or the extrusion force of the equipment. When the long axis direction of the rice is not parallel to the axis of the rice milling roller, the breakage rate during the rice milling process will increase, and the energy consumption of rice milling will increase. In addition, China only has a storage standard for paddy rice, and the paddy rice must reach a safe moisture content when entering the warehouse. When milling the paddy rice after it is out of the warehouse, the moisture content of the rice cortex should be adjusted to the optimal moisture content for milling the husk, so as to keep the moisture content of the rice endosperm unchanged, which is beneficial to the rice milling process and beneficial to reducing breakage and increasing wholeness. However, there is currently no such rice milling device that can accurately control the rice milling process. Summary of the Invention

[0003] The object of the present invention is to provide a device and process for orderly tempering and milling rice in view of the deficiencies of the existing technology. This rice milling device can adjust the moisture content of the rice surface layer to the optimal range, which is beneficial to milling the rice husk, and can also ensure that the rice enters the rice milling machine along the length direction, which is beneficial to reducing the breakage rate and energy consumption of rice milling and improving the head rice rate.

[0004] To achieve the above object, the present invention provides an orderly tempering rice milling device, including:

[0005] A tempering bin, arranged on the frame, and an inlet is arranged at the upper part of the tempering bin;

[0006] A water mist mixing mechanism, connected to the inlet;

[0007] A hopper, communicating with the lower part of the tempering bin, the hopper is conical, and a plurality of orderly channels are symmetrically arranged in the hopper; the outer sides of the orderly channels are fixed on the inner side of the hopper; the upper ends of the orderly channels communicate with the rice sorting nozzle, and the lower ends of the orderly channels are inserted into the rectangular grooves on the cylindrical surface of the throttle valve; the width of the orderly channels is smaller than the length of the rice grains; the throttle valve can slide up and down at the lower ends of the orderly channels; the lower end outlets of the orderly channels communicate with the bottom opening of the hopper; a plurality of rows of guide pins are arranged along the height direction at the upper ends of the orderly channels, and the adjacent two rows of the guide pins are arranged staggeredly, and the distance between the guide pins in the same row is 2 to 3 times the length of the rice grains.

[0008] Optionally, a throttle valve is movably arranged at the bottom opening of the hopper, the throttle valve is movably arranged on the hopper through an adjusting motor, the throttle valve can adjust the effective area of the lower end outlets of the orderly channels, and a deformable tube is arranged at the bottom opening of the hopper.

[0009] Optionally, the ordered channels are uniformly arranged on the inner surface of the hopper, and the upper inlets of the ordered channels are on the same horizontal plane.

[0010] Optionally, a sorting mechanism is provided between the conditioning bin and the hopper. The sorting mechanism includes:

[0011] A baffle, which is tubular, is connected to the hopper, and the baffle is sleeved on the outer periphery of the conditioning bin;

[0012] Multiple pairs of flow plates are uniformly arranged along the inner circumference of the baffle. Each pair of flow plates, the baffle and the inverted cone form a rice sorting nozzle, and the width at the outlet of the rice sorting nozzle is smaller than the length of the rice grains; by adjusting the thickness of the flow plate, the width at the outlet of the rice sorting nozzle can be adjusted. The bottom of the rice sorting nozzle is correspondingly provided with an ordered channel; a guide pin is arranged at the upper part of the ordered channel.

[0013] Optionally, an inverted cone is arranged in the middle of the baffle. The inverted cone is installed on the hopper through a framework, and the baffle and the inverted cone are respectively located at both ends of the rice sorting nozzle.

[0014] Optionally, a flow plate is movably arranged on the rice sorting nozzle, and the flow plate can change the width at the outlet of the rice sorting nozzle.

[0015] Optionally, a vibration mechanism is provided between the frame and the hopper. The vibration mechanism includes:

[0016] A vibration motor is arranged on the baffle, and the output end of the vibration motor is connected to the hopper;

[0017] A vibration spring, one end of which is connected to the frame, and the other end of the vibration spring is connected to the baffle. The baffle is connected to the upper end of the hopper.

[0018] Optionally, a material leveling plate is arranged in the conditioning bin. The upper surface of the material leveling plate is parabolic, and the material leveling plate is arranged directly below the inlet. The material leveling plate is connected to the inverted cone through a vibration transmission rod.

[0019] Optionally, a water mist mixing mechanism is arranged at the upper part of the conditioning bin. The water mist mixing mechanism includes:

[0020] A mixer, one end of which is connected to the inlet, and the other end of the mixer is provided with a feed inlet;

[0021] A water mist pipe is communicated with the mixer;

[0022] Mixing blades are arranged in the mixer, and a mixing motor connected to the mixing blades is arranged on the mixer.

[0023] The present invention also provides a process for orderly conditioning and milling of rice, which utilizes the device for orderly conditioning and milling of rice described above. The process includes feeding the rice into the water mist mixing mechanism for uniform water spraying and water control operations. The water spraying amount in the water mist mixing mechanism is controlled between 0 and 0.3% of the mass flow rate of the rice. The process controls the conditioning time of the rice from the inlet of the conditioning bin to the outlet of the deformation tube to be between 2 and 20 minutes. After the rice is conditioned, the water content non-uniformity of the rice at the outlet of the deformation tube is less than 0.5%. The process controls the movement direction of the long axis of the rice grains at the outlet of the deformation tube to be vertically downward. The consistency of the movement of the rice grains along the long axis direction is greater than 95%.

[0024] The present invention provides a device and a process for orderly conditioning and milling of rice, and the beneficial effects are as follows:

[0025] 1. The water mist mixing mechanism of the device for orderly conditioning and milling of rice can adjust the water content on the surface layer of the rice to the optimal milling water content of 15% - 16%, while keeping the water content of the middle endosperm unchanged, which is beneficial to rice husk removal, reduces the breakage rate, lowers the energy consumption, and increases the rice yield rate;

[0026] 2. In the device for orderly conditioning and milling of rice, after the rice grains pass through the sorting channel, the rice sorting nozzle, the guide pins and the orderly channel in sequence, the rice enters the rice milling machine in the length direction, and the length direction of the rice grains is consistent with the axial direction of the rice milling machine, which is beneficial to the orderly tumbling of the rice grains in the rice milling machine, is beneficial to the orderly mixing movement of the rice grains from the inner layer to the outer layer or from the outer layer to the inner layer in the rice milling machine, reduces the unevenness of husk removal and over-milling phenomena, lowers the broken rice rate and the rice milling energy consumption, and effectively improves the head rice rate.

[0027] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By describing the exemplary embodiments of the present invention in more detail in conjunction with the drawings, the above and other objects, features and advantages of the present invention will become more obvious. Among them, in the exemplary embodiments of the present invention, the same reference numerals generally represent the same components.

[0029] Figure 1 FIG. shows a schematic structural diagram of a device for orderly conditioning and milling of rice according to an embodiment of the present invention.

[0030] Figure 2 FIG. shows Figure 1 the A - A sectional view of

[0031] Figure 3 FIG. shows Figure 2 the B - B sectional view of

[0032] Figure 4 FIG. shows Figure 1 the K - direction sectional view of

[0033] Figure 5 shows Figure 4 C-C sectional view of

[0034] Explanation of reference numerals:

[0035] 1, tempering bin; 2, frame; 3, inlet; 4, hopper; 5, guide pin; 6, orderly channel; 7, throttle valve; 8, deformation tube; 9, edge guard; 10, flow plate; 11, rice sorting nozzle; 12, inverted cone; 13, vibration motor; 14, vibration spring; 15, material leveling plate; 16, vibration transmission rod; 17, mixer; 18, feed inlet; 19, water mist pipe; 20, mixing motor; 21, adjusting motor; 22, skeleton. Detailed implementation mode

[0036] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0037] The present invention provides an orderly tempering and rice milling device, including:

[0038] A tempering bin, which is arranged on the frame, and an inlet is arranged at the upper part of the tempering bin;

[0039] A water mist mixing mechanism, which is connected to the inlet;

[0040] A hopper, which is communicated with the lower part of the tempering bin. The hopper is conical, and a plurality of orderly channels are symmetrically arranged in the hopper; the outer sides of the orderly channels are fixed on the inner side of the hopper; the upper ends of the orderly channels are communicated with the rice sorting nozzle, and the lower ends of the orderly channels are inserted into the rectangular grooves on the cylindrical surface of the throttle valve; the width of the orderly channels is smaller than the length of the rice grains; the throttle valve can slide up and down at the lower ends of the orderly channels; the lower end outlets of the orderly channels are communicated with the bottom opening of the hopper; a plurality of rows of guide pins are arranged along the height direction at the upper ends of the orderly channels, and the adjacent two rows of guide pins are arranged staggeredly, and the distance between the guide pins in the same row is 2-3 times the length of the rice grains, and the width of the orderly channels is smaller than the length of the rice grains.

[0041] Specifically, in the rice milling device, the rice grains enter the conditioning bin through the water mist mixing mechanism. The water mist mixing mechanism mixes water mist with the rice grains to adjust the moisture on the surface of the rice to reach the optimal moisture for rice milling. Then, the rice grains enter the conditioning bin, and by controlling the rice conditioning time, the moisture for conditioning only enters the cortex of the rice, which is beneficial to rice husk removal and increases the rice yield. The rice grains fall evenly in the conditioning bin and finally enter the rice sorting nozzle formed by the sloping plate, the retaining edge, and the inverted cone. Since the width at the outlet of the rice sorting nozzle is smaller than the length of the rice grains, by adjusting (replacing) the thickness of the sloping plate, the width at the outlet of the rice sorting nozzle can be adjusted. The outlet of the rice sorting nozzle communicates with the orderly channel, and the width of the orderly channel is smaller than the length of the rice grains. The orderly channel is installed on the inner wall of the hopper. The upper opening of the orderly channel communicates with the rice sorting nozzle, and the lower opening of the orderly channel communicates with the deformation pipe.

[0042] When the rice grains enter the orderly channel, since the width of the orderly channel is smaller than the length of the rice grains, the movement of the rice grains is restricted in the width direction of the channel. At the same time, due to the vibration of the vibration motor, the movement of the rice grains will also be guided by the guide pins at the upper part of the orderly channel. Under the combined action of the vibration motor, the orderly channel, and the guide pins, the movement direction of the flowing rice grains gradually tends to the length direction of the rice grains. Due to the special shape of the orderly channel and the guiding effect of the guide pins, the flow resistance is smaller when the length direction of the rice grains is consistent with the rice flow direction. Therefore, the flow direction of the rice grains in the orderly channel gradually becomes stable, that is, the length direction of the rice grains tends to be consistent with the rice flow direction, thereby realizing the process of rice grain orientation and orderly flow.

[0043] In one embodiment, the distance between the guide pins in the same row is 2 - 3 times the length of the rice grains; the position of the next row of guide pins is at the middle position between two adjacent guide pins in the previous row.

[0044] In the existing rice milling device, the flow direction of the rice grains is adjusted through a transmission line that occupies a large area. This orderly conditioning rice milling device reduces the floor area. Due to the gravity of the rice grains and the up-and-down arrangement of the guide pins and the orderly channel, the rice grains flow along the length direction.

[0045] Optionally, a throttle valve is movably arranged at the bottom opening of the hopper. The throttle valve is movably arranged on the hopper through an adjustment motor. The throttle valve can adjust the effective area of the lower outlet of the orderly channel. The bottom opening of the hopper is provided with a deformation pipe.

[0046] Specifically, at the connection between the orderly channel and the bottom opening of the hopper, a throttle valve is provided. By moving the throttle valve up and down, the effective area of the connection between the orderly channel and the bottom opening of the hopper for the rice grains to pass through can be adjusted, thereby adjusting the flow rate of the rice grains. The rice grains flowing along the length direction enter the rice milling machine through the deformation pipe. The shape and effective cross-sectional dimensions of the lower end of the deformation pipe match the inlet pipe of the rice milling machine.

[0047] The outlets of each ordered channel are all located at the conical bottom of the hopper. The flowing direction of the rice at the outlet of each ordered channel gradually tends to be vertically downward. The rice flowing directionally and orderly in each ordered channel converges in the deformation tube. Since the outlet of each ordered channel is embedded in the throttling groove on the cylindrical surface of the throttle valve, by adjusting the forward and reverse rotation of the adjustment motor, the screw rotates forward and backward, thereby driving the throttle valve to slide up and down at the lower end of the ordered channel. When the throttle valve slides upward, the effective area of the lower end outlet of the ordered channel increases, resulting in an increase in flow rate. Conversely, when the throttle valve slides downward, the effective cross-sectional area of the lower end outlet of the ordered channel decreases, resulting in a decrease in flow rate. At the same time, when the throttle valve is adjusted, the directional throttle valve does not change the flowing direction of the rice in the ordered channel. Therefore, the rice at the lower end outlets of each ordered channel all enters the deformation tube vertically downward, and the length direction of the rice is consistent with the flowing direction, thus completing the tasks of grain orientation convergence and throttling process.

[0048] Optionally, the ordered channels are evenly arranged on the inner surface of the hopper, and the upper end inlets of the ordered channels are on the same horizontal plane.

[0049] Specifically, guide pins are arranged at the upper part of each ordered channel. Each row of guide pins is horizontally arranged along the length direction of the ordered channel. Each row of guide pins is arranged on the inner surface of the hopper along the horizontal direction. The installation method of the guide pins is the same as the assembly process of rivets. The diameter of each guide pin is between 1 and 5 mm. The rice grains discharged from between the guide pins directly enter the ordered channel, ensuring that the downward sliding of the rice grains will not be converted into movement along the width direction of the rice grains.

[0050] Optionally, a sorting mechanism is arranged between the tempering bin and the hopper. The sorting mechanism includes:

[0051] A rib, in a tubular shape, connected to the hopper, and the rib is sleeved on the outer periphery of the tempering bin;

[0052] Multiple pairs of flow plates are evenly arranged along the inner circumference of the rib. Each pair of flow plates and the rib and the inverted cone form a rice sorting nozzle. The width at the outlet of the rice sorting nozzle is smaller than the length of the rice grains. By adjusting the thickness of the flow plate, the width at the outlet of the rice sorting nozzle can be adjusted. The bottom of the rice sorting nozzle is correspondingly provided with an ordered channel; guide pins are arranged at the upper part of the ordered channel.

[0053] Optionally, an inverted cone is arranged in the middle of the rib. The inverted cone is installed on the hopper through a framework, and the rib and the inverted cone are respectively located at both ends of the rice sorting nozzle.

[0054] Specifically, a ring of retaining edges is provided between the tempering bin and the hopper. The lower end of the retaining edge is connected to the hopper, and the upper end of the retaining edge is sleeved on the outer periphery of the tempering bin. Before the rice grains enter the hopper from the tempering bin, under the guidance of the rice sorting nozzle formed between the chute plate, the retaining edge, and the inverted cone, the rice grains flow towards the outlet of the rice sorting nozzle. The rice sorting nozzles and the sorting channels are in one-to-one correspondence. Since the width of the outlet of the rice sorting nozzle is a rectangular channel with a width of 2 - 8 mm, the rice grains can only pass through the rice sorting nozzle in the length direction or at a certain inclination angle and enter the ordered channel. In this way, in the radial direction of the sorting mechanism, the retaining edge, the chute plate, and the inverted cone form a rice sorting nozzle that is wider at the top and narrower at the bottom, and the rice grains can gather and pass through the rice sorting nozzle to enter the ordered channel.

[0055] Optionally, a chute plate is movably arranged on the rice sorting nozzle, and the chute plate can change the width of the outlet of the rice sorting nozzle.

[0056] Specifically, the baffle can change the width of the outlet of the rice sorting nozzle to adapt to rice grains of different thicknesses and widths; while adjusting the baffle, it is also necessary to adjust the profile size of the chute plate. Changing the size of the chute plate can achieve the adjustment of the width of the outlet of the rice sorting nozzle channel, so that the flow direction of rice grains of different widths can be adjusted.

[0057] Optionally, a vibration mechanism is provided between the frame and the hopper. The vibration mechanism includes:

[0058] A vibration motor, which is arranged on the retaining edge, and the output end of the vibration motor is connected to the hopper;

[0059] A vibration spring, one end of which is connected to the frame, and the other end of which is connected to the retaining edge.

[0060] Specifically, a vibration motor is arranged on the retaining edge, and the retaining edge is connected to the hopper. Under the action of the vibration motor, the hopper and the retaining edge start to vibrate. Since the vibration spring is arranged vertically between the frame and the retaining edge, the hopper and the retaining edge can vibrate horizontally. The rice grains move downward under the action of gravity, and under the action of the vibration force of the hopper and the retaining edge, the rice grains can enter the ordered channel and move downward between multiple guide pins, realizing the directional and orderly flow of the rice grains.

[0061] Driven by the vibration motor, the hopper generates regular vibrations; the rice grains are limited and guided by a pair of chute plates, retaining edges, and inverted cones, and the rice grains gradually approach the outlet of the rice sorting nozzle; since the outlet of the rice sorting nozzle is a slender opening with a width smaller than the length of the rice grains, if the length direction of the rice grains faces the width direction of the slender opening, the rice grains cannot enter the ordered channel, achieving the effect of restricting the flow direction of the rice grains; with the vibration of the hopper, the rice grains in the ordered channel fall orderly between the guide pins, completing the rice sorting and direction control process.

[0062] Optionally, a material leveling plate is provided in the conditioning bin. The upper surface of the material leveling plate is parabolic. The material leveling plate is arranged directly below the inlet and is connected to the inverted cone through a vibration transmission rod.

[0063] Specifically, a material leveling plate connected to the inverted cone is provided in the conditioning bin. The material leveling plate has a structure that is convex in the middle and low at the edges. The effective cross-sectional area of the material leveling plate is 2 to 8 times that of the inlet. Since the inverted cone is installed on the hopper through a framework, the hopper can drive the material leveling plate to move together under the action of a vibration motor. After the rice grains falling from the inlet come into contact with the material leveling plate, the rice grains fall into the conditioning bin.

[0064] Optionally, a water mist mixing mechanism is provided in the upper part of the conditioning bin. The water mist mixing mechanism includes:

[0065] A mixer, one end of which is connected to the inlet, and the other end of the mixer is provided with a feed inlet;

[0066] A water mist pipe, which is communicated with the mixer;

[0067] Mixing blades, which are arranged in the mixer, and a mixing motor connected to the mixing blades is arranged on the mixer.

[0068] Specifically, the water mist mixing mechanism atomizes the water mist after the rice grains entering the mixer from the feed inlet by compressed air, and sprays the water mist into the mixer from the hollow shaft and mixing blades of the mixer through the water mist pipe; the mixer mixes the continuously incoming rice and the continuously sprayed water mist evenly; according to factors such as the moisture content of the rice, the variety of the rice, the processing standard, and the number of conditioning times, the total amount of water is calibrated; the flow rate of the rice is automatically controlled by frequency conversion steplessly by the mixing motor; the water content is automatically controlled by the flow rate of the water mist in the water mist pipe; the mixed rice enters the conditioning bin from the inlet pipe. The water content in the mixer is controlled between 0 and 0.3% of the mass flow rate of the rice, and the moisture non-uniformity of the rice after conditioning is less than 0.5%.

[0069] The time for the rice to enter the conditioning bin from the inlet and then reach the feed inlet of the rice milling machine is the rice conditioning time. By controlling the rice conditioning time, it is ensured that the moisture for conditioning only enters the cortex of the rice grains and does not enter the endosperm of the rice grains; according to the original moisture content of the rice, the water content and the conditioning time are determined. The adjustment of the conditioning time can be determined by controlling the height of the free surface of the grain layer in the conditioning bin. The free surface of the grain layer in the conditioning bin is detected by a sensor, and the height of the grain layer surface in the conditioning bin is adjusted by the frequency conversion of the mixing motor. According to the safe moisture content for storing paddy in China, the conditioning time of the rice is controlled between 2 and 20 minutes, and the non-uniformity of the rice conditioning time in the conditioning bin is controlled to be less than 0.5%.

[0070] The present invention also provides a process for orderly tempering and milling rice, which utilizes the device for orderly tempering and milling rice described above. The process includes feeding the rice into the water mist mixing mechanism for uniform water addition and water control operations. The water addition amount in the water mist mixing mechanism is controlled between 0 and 0.3% of the mass flow rate of the rice. The process controls the tempering time of the rice from the inlet of the tempering bin to the outlet of the deformation tube to be between 2 and 20 minutes. After tempering the rice, the water unevenness of the rice at the outlet of the deformation tube is less than 0.5%. The process controls the movement direction of the long axis of the rice grains at the outlet of the deformation tube to be vertically downward. The consistency of the movement of the rice grains along the long axis direction is greater than 95%.

[0071] Embodiment

[0072] As Figures 1 to 5 shown, the present invention provides a device for orderly tempering and milling rice, including:

[0073] A tempering bin 1, which is arranged on a frame 2, and an inlet 3 is arranged at the upper part of the tempering bin 1;

[0074] A water mist mixing mechanism, which is connected to the inlet 3;

[0075] A hopper 4, which is communicated with the lower part of the tempering bin 1. The hopper 4 is conical, and a plurality of orderly channels 6 are uniformly arranged on the inner surface of the hopper 4 in the circumferential direction. The number of orderly channels is the same as the number of rice sorting nozzles. A guide pin 5 is arranged at the upper part of the orderly channel. The adjacent two rows of guide pins 5 are staggered. The lower end outlet of the orderly channel 6 is communicated with the bottom opening of the hopper 4. The distance between the same row of guide pins 5 is 2 to 3 times the length of the rice grains, and the width of the orderly channel 6 is less than the length of the rice grains.

[0076] In this embodiment, a throttle valve 7 is movably arranged at the bottom opening of the hopper 4. The throttle valve 7 is movably arranged on the hopper 4 through an adjusting motor 21. The throttle valve 7 can adjust the effective area of the lower end outlet of the orderly channel 6. A deformation tube 8 is arranged at the bottom opening of the hopper 4.

[0077] In this embodiment, the orderly channels 6 are uniformly arranged on the inner surface of the hopper 4, and the upper end inlets of the orderly channels 6 are on the same horizontal plane.

[0078] In this embodiment, a sorting mechanism is arranged between the tempering bin 1 and the hopper 4. The sorting mechanism includes:

[0079] A retaining edge 9, which is tubular. The retaining edge 9 is connected to the hopper 4 and sleeved on the outer periphery of the tempering bin 1;

[0080] A plurality of pairs of chute plates 10 are uniformly arranged along the inner circumference of the retaining edge 9. Each pair of chute plates, the retaining edge, and the inverted cone form a rice sorting nozzle, and the width at the outlet of the rice sorting nozzle is smaller than the length of the rice grains. By adjusting the thickness of the chute plates, the width at the outlet of the rice sorting nozzle can be adjusted. An orderly channel is correspondingly arranged at the bottom of the rice sorting nozzle; a guide pin is arranged above the orderly channel.

[0081] In this embodiment, an inverted cone 12 is arranged in the middle of the retaining edge 9. The inverted cone 12 is installed on the hopper 4 through a framework 22. The retaining edge 9 and the inverted cone 12 are respectively located at both ends of the rice sorting nozzle.

[0082] In this embodiment, a chute plate is movably arranged on the rice sorting nozzle 11, and the chute plate can change the width at the outlet of the rice sorting nozzle 11.

[0083] In this embodiment, a vibration mechanism is arranged between the frame 2 and the hopper 4. The vibration mechanism includes:

[0084] A vibration motor 13 is arranged on the retaining edge 9, and the output end of the vibration motor 13 is connected to the hopper 4;

[0085] A vibration spring 14 has one end connected to the frame 2 and the other end connected to the retaining edge 9.

[0086] In this embodiment, a material leveling plate 15 is arranged in the conditioning bin 1. The upper surface of the material leveling plate 15 is parabolic. The material leveling plate 15 is arranged directly below the inlet 3, and the material leveling plate 15 is connected to the inverted cone 12 through a vibration transmission rod 16.

[0087] In this embodiment, a water mist mixing mechanism is arranged at the upper part of the conditioning bin 1. The water mist mixing mechanism includes:

[0088] A mixer 17 has one end connected to the inlet 3, and the other end of the mixer 17 is provided with a feed inlet 18;

[0089] A water mist pipe 19 is communicated with the mixer 17;

[0090] Mixing blades are arranged in the mixer 17, and a mixing motor 20 connected to the mixing blades is arranged on the mixer 17.

[0091] The present invention also provides a process for orderly conditioning and milling of rice. Using the device for orderly conditioning and milling of rice described above, this process includes feeding the rice into the water mist mixing mechanism for uniform water application and water control operations. The water application amount in the water mist mixing mechanism is controlled between 0 and 0.3% of the mass flow rate of the rice. This process controls the conditioning time of the rice from the inlet of the conditioning bin to the outlet of the deformation tube between 2 and 20 minutes; after the rice is conditioned, the water content non-uniformity of the rice at the outlet of the deformation tube is less than 0.5%; this process controls the movement direction of the long axis of the rice grains at the outlet of the deformation tube to be vertically downward; the consistency of the movement of the rice grains along the long axis direction is greater than 95%.

[0092] In summary, the working process of the device for orderly tempering and milling rice is as follows: Rice enters the mixer 17 from the feed inlet 18. After water is atomized by compressed air, it is sprayed into the mixer 17 from the water mist pipe 19 through the hollow shaft and mixing blades of the mixer 17. After the rice and water are mixed, they enter the tempering bin 1 from the inlet 3. The rice mixed with water falls from the inlet 3 onto the vibrating material leveling plate 15. Under the action of leveling the material by the material leveling plate 15, the rice falls from the periphery of the material leveling plate 15 into the tempering bin 4. Driven by the vibration of the vibration motor 13, the hopper 4, the inverted cone 12, the vibration transmission rod 16, the material leveling plate 15, the retaining edge 9, the flow plate 10, etc. vibrate together. Under the combined action of gravity and vibration force, the rice grains gradually enter the rice sorting nozzle 11 formed by the flow plate 10, the retaining edge 9, and the inverted cone 12. Then it enters the orderly channel 6. Under the combined action of vibration force and gravity, the rice flows in the orderly channel under the guiding action of the guiding pin 5. The tails of all the orderly channels 6 are embedded in the sliding grooves on the cylindrical surface of the throttle valve 7. Driven by the adjusting motor 21 and the threaded shaft, the throttle valve 7 can slide up and down at the tail end of the orderly channel 6 to adjust the flow rate. Finally, the rice in all the orderly channels 6 falls from the opening between the tail end of the orderly channel 6 and the throttle valve 7 into the deformation tube 8 and is discharged, completing the technological task of orderly tempering of rice.

[0093] The various embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments.

Claims

1. An apparatus for orderly tempering and milling rice, characterized in that, Comprising: A conditioning bin, arranged on a frame, with an inlet provided at the upper part of the conditioning bin; A water mist mixing mechanism, connected to the inlet; A hopper, communicating with the lower part of the conditioning bin, the hopper being conical, with a plurality of symmetrically arranged ordered channels provided inside the hopper, the outer sides of the ordered channels being fixed to the inner side of the hopper, the upper ends of the ordered channels being communicated with a rice sorting nozzle, the lower ends of the ordered channels being inserted into rectangular grooves on the cylindrical surface of a throttle valve, the width of the ordered channels being less than the length of the rice grains, the throttle valve being able to move up and down in the vertical direction at the lower ends of the ordered channels, the lower end outlets of the ordered channels being communicated with the bottom opening of the hopper, the upper ends of the ordered channels being provided with multiple rows of guide pins along the height direction, the adjacent two rows of the guide pins being staggered, the distance between the guide pins in the same row being 2 to 3 times the length of the rice grains, and the width of the ordered channels being less than the length of the rice grains; A sorting mechanism is arranged between the conditioning bin and the hopper, and the sorting mechanism includes: A retaining edge, being tubular, the retaining edge being connected to the hopper, and the retaining edge being sleeved on the outer periphery of the conditioning bin; Multiple pairs of flow plates, evenly arranged along the inner circumference of the retaining edge, each pair of the flow plates and the retaining edge and an inverted cone form the rice sorting nozzle, the width at the outlet of the rice sorting nozzle being less than the length of the rice grains, the thickness of the flow plates being correspondingly set with the width at the outlet of the rice sorting nozzle, the bottom of the rice sorting nozzle being correspondingly arranged with the ordered channels, and the upper part of the ordered channels being provided with the guide pins; An inverted cone is arranged in the middle of the retaining edge, the inverted cone being installed on the hopper through a framework, and the retaining edge and the inverted cone are respectively located at both ends of the rice sorting nozzle; A flow plate is movably arranged on the rice sorting nozzle, and the flow plate can change the width at the outlet of the rice sorting nozzle.

2. The device for orderly tempering and milling rice according to claim 1, characterized in that, The throttle valve is movably arranged on the hopper through an adjusting motor, the throttle valve can adjust the effective area of the lower end outlet of the ordered channels, and a deformable pipe is provided at the bottom opening of the hopper.

3. The device for ordered conditioning and milling of rice according to claim 1, characterized in that, The ordered channels are evenly arranged on the inner surface of the hopper, and the upper end inlets of the ordered channels are on the same horizontal plane.

4. The device for orderly tempering and milling rice according to claim 1, characterized in that, A vibration mechanism is arranged between the frame and the hopper, and the vibration mechanism includes: A vibration motor, arranged on the retaining edge, and the output end of the vibration motor is connected to the hopper; A vibration spring, one end of which is connected to the frame, the other end of the vibration spring is connected to the retaining edge, and the retaining edge is connected to the upper end of the hopper.

5. The device for orderly tempering and milling rice according to claim 1, characterized in that, A material leveling plate is arranged inside the conditioning bin, the upper surface of the material leveling plate is parabolic, the material leveling plate is arranged directly below the inlet, and the material leveling plate is connected to the inverted cone through a vibration transmission rod.

6. The device for ordered tempering and milling rice according to claim 1, characterized in that, A water mist mixing mechanism is provided at the upper part of the conditioning bin, and the water mist mixing mechanism includes: A mixer, one end of which is connected to the inlet, and the other end of the mixer is provided with a feed inlet; A water mist pipe, communicating with the mixer; Mixing blades, arranged inside the mixer, and a mixing motor connected to the mixing blades is arranged on the mixer.

7. A process for orderly tempering and milling rice, using the apparatus for orderly tempering and milling rice according to any one of claims 1-6, characterized in that, This process includes feeding rice into a water mist mixing mechanism for uniform water addition and water control operations. The water addition amount in the water mist mixing mechanism is controlled between 0 and 0.3% of the mass flow rate of the rice, and the water unevenness of the rice after water addition is less than 0.5%. The bottom opening of the hopper is provided with a deformation pipe, and the conditioning time of the rice from the inlet of the conditioning bin to the outlet of the deformation pipe is 2 to 20 minutes. After the rice is conditioned, the water unevenness of the rice at the outlet of the deformation pipe is less than 0.5%.

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