Low-gi rice flour production raw material grinding device and grinding method thereof

Abstract

The application discloses a low-GI rice flour production raw material crushing equipment and a crushing method thereof, and relates to the technical field of low-GI rice flour production. The equipment comprises a hopper which is a raw material feeding port of the equipment. A coarse powder machine is arranged at the bottom of the hopper and used for coarsely crushing the raw material. One end of the coarse powder machine is connected with a feeder. One end of the feeder is connected with a feeding air pipe. The other end of the feeder is connected with a crushing disc. The crushing disc is driven by airflow to finely crush the raw material by mutual collision. A screening device is connected to the crushing disc and used for screening the raw material which is finely crushed. The screening device can also send the raw material with relatively coarse particles which is screened out back to the crushing disc for secondary crushing. The feeder and the screening device are arranged to control the crushing efficiency and effect of the raw material. Meanwhile, the feeder and the screening device can be adjusted to adjust the particle size of the raw material after crushing.

Description

Technical Field

[0001] This invention relates to the field of low-GI rice noodle production technology, specifically to a raw material crushing device and crushing method for low-GI rice noodle production. Background Technology

[0002] With consumers paying increasing attention to healthy eating, low-GI (glycemic index) foods have gradually become a research hotspot in the food industry due to their advantages in controlling blood sugar and maintaining energy balance; as an important category of low-GI staple foods, low-GI rice noodles have seen continuous growth in market demand.

[0003] In the production of low-GI rice flour, the raw material processing is subject to strict requirements. During the processing and pulverization of the raw materials, a micron-level pulverization method is used. By pulverizing the raw materials into micron-level particles, the cell wall structure of the raw materials can be destroyed, thereby allowing the dietary fiber, resistant starch and other components in the grains to be fully released. In addition, it can significantly improve the hydration properties and solubility of the grain flour, and can also convert some β starch into α starch, reducing the digestion rate and other beneficial effects.

[0004] However, traditional raw material grinding equipment faces the following technical bottlenecks in the production of low-GI rice noodles: existing grinding equipment struggles to precisely control the particle size of raw materials, resulting in uneven particle size after grinding. This affects the gelatinization and digestion rate of starch in subsequent processing, leading to fluctuations in the product's GI value and making it difficult to meet the stringent standards for low-GI foods. Furthermore, traditional grinding processes often employ a single grinding cycle, causing materials to accumulate or be over-ground in the grinding chamber, resulting in low equipment efficiency, high energy consumption, and the potential for overheating during prolonged grinding, which can damage the nutritional components of the raw materials. In addition, the lack of an effective grading and recycling grinding mechanism prevents the timely return of large particles, leading to raw material waste and poor particle size consistency, thus affecting the quality stability of the final product. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention proposes the following technical solutions:

[0006] A raw material crushing device for low-GI rice noodle production includes a hopper, a feeding air pipe, and a high-pressure air pipe. The hopper is the raw material inlet of the device. A coarse grinder is installed at the bottom of the hopper for coarse crushing of the raw materials. One end of the coarse grinder is connected to a feeder, one end of which is connected to the feeding air pipe. The other end of the feeder is connected to a crushing disc, which is connected to the high-pressure air pipe. The high-pressure air pipe is used to input high-pressure, high-speed airflow into the crushing disc. The crushing disc uses airflow to drive the raw materials to collide with each other for fine crushing. The device is equipped with a sieve for screening the finely crushed raw materials. The sieve can also send the coarser particles that have been screened back to the crushing pan for secondary crushing. One end of the sieve is connected to a gas-powder separation system, which separates the crushed material from the airflow. A collection bucket is provided at the bottom of the gas-powder separation system to collect the crushed raw materials. A gas treatment and emission system is provided on one side of the gas-powder separation system to treat the airflow. The airflow is treated by the gas treatment and emission system before flowing out of the device.

[0007] Furthermore, the feeder is inclined at a 40-degree angle within the device, and its setting angle relative to the horizontal position is 40 degrees. The feeder includes a feeder housing, one end of which is connected to a feeding air pipe, and the other end of which is connected to a crushing disc. An upper semicircular block is rotatably installed inside the feeder housing near the feeding air pipe. The upper semicircular blocks are symmetrically arranged inside the feeder housing. The upper semicircular blocks are semicircular, and the two upper semicircular blocks form a funnel-shaped through hole inside the feeder housing. The upper semicircular blocks can rotate synchronously inside the feeder housing to adjust the airflow velocity entering the feeder housing from the feeding air pipe. When the symmetrically arranged upper semicircular blocks form a funnel shape, and the larger end of the funnel faces the feeding air pipe, the upper semicircular blocks will increase the airflow velocity, and vice versa.

[0008] Furthermore, a lower semicircular block is rotatably installed at the end of the feeding machine box away from the feeding air pipe. The lower semicircular blocks are symmetrically arranged inside the feeding machine box. The two lower semicircular blocks form a funnel-shaped through hole inside the feeding machine box. When the symmetrically arranged lower semicircular blocks form a funnel shape and the larger end of the funnel faces the crushing disc, the lower semicircular blocks can reduce the flow velocity of the airflow when it flows out of the feeding machine box, preventing the airflow carrying raw materials from rushing into the crushing disc at high speed. Compared with the upper semicircular block, the diameter of the lower semicircular block is larger than that of the upper semicircular block. This is to facilitate the feeder to reduce the speed of the airflow.

[0009] Furthermore, an upper pressure rod is fixedly installed on the outer wall of the upper semicircular block. An auxiliary sliding plate is provided inside the feeding machine housing, symmetrically arranged within the housing. A flexible connecting piece is provided between the auxiliary sliding plate and the upper semicircular block to facilitate subsequent movement between them. The upper pressure rod on the upper semicircular block is engaged with the auxiliary sliding plate. When the upper semicircular block rotates, it can drive the auxiliary sliding plate to slide within the feeding machine housing via the upper pressure rod. The sliding direction of the auxiliary sliding plate is... Figure 10 The slide moves up and down, and the main slide is slidably mounted on the secondary slide. The secondary slide and the main slide are used to restrict the airflow path and space.

[0010] Furthermore, a downward pressure rod is fixedly installed on the outer wall of the lower semicircular block. The downward pressure rod is engaged within the main slide plate, and the downward pressure rod is used to drive the main slide plate to slide within the feeder housing. Figure 10 The main slide moves up and down together with the secondary slide, and a flexible connecting piece is provided between the main slide and the lower semicircular block to fill the gap.

[0011] Furthermore, an upper gear is fixedly installed at one end of the upper semicircular block. The upper gear is set on the outer wall of the feeding machine box. Two upper gears on the outer wall of the feeding machine box are symmetrically arranged and mesh with each other. Angle scale lines are also set around the upper gear on the outer wall of the feeding machine box to mark the rotation angle of the upper semicircular block inside the feeding machine box, so as to facilitate the user to adjust the funnel shape formed by the two upper semicircular blocks.

[0012] Furthermore, a lower gear is fixedly installed at one end of the lower semicircular block. The lower gear is set on the outer wall of the feeding machine box. Two lower gears on the outer wall of the feeding machine box are symmetrically arranged and mesh with each other. Angle scale lines are also set around the lower gear on the outer wall of the feeding machine box to mark the rotation angle of the lower semicircular block inside the feeding machine box, so as to facilitate the user to adjust the funnel shape formed by the two lower semicircular blocks.

[0013] Furthermore, a handle screw is rotatably mounted on the outer wall of the feeding machine housing for user adjustment. A slide rod is slidably mounted on the outer wall of the feeding machine housing, and the slide rod is threadedly connected to the handle screw. One end of the slide rod is rotatably connected to one side of the upper gear to drive the upper gear to rotate, and the other end of the slide rod is rotatably connected to one side of the lower gear to drive the lower gear to rotate. A scale is provided on the outer wall of the feeding machine housing to indicate the adjustment position of the slide rod.

[0014] Furthermore, the screening device includes a distribution box, one end of which is provided with a distribution pipe. One end of the distribution pipe is connected to the screening device to allow airflow to carry the pulverized material into the distribution box. One end of the distribution box is fixedly installed with a discharge pipe, and the other end of the discharge pipe is connected to the air-powder separation system.

[0015] Furthermore, a baffle plate is rotatably installed inside the material distribution box. The baffle plate is inclined inside the material distribution box to guide the airflow direction. Multiple baffle plates are evenly distributed in a stepped manner. The multiple baffle plates are used to slow down the airflow velocity inside the material distribution box and guide the airflow direction, so that larger particles carried in the airflow fall to the bottom of the material distribution box by gravity.

[0016] Furthermore, a return plate is rotatably installed at the lowest point of the bottom of the distribution box. The return plate is used to send larger particles out of the distribution box. The return plate can also prevent airflow in the crushing disc from directly entering the distribution box. A distribution return pipe is fixedly installed at one end of the distribution box where the return plate is located. The distribution return pipe is connected to the crushing disc to allow larger particles to return to the crushing disc.

[0017] Furthermore, the coarse powder mill includes an outer casing and a coarse material cylinder. The outer casing is fixedly connected to the coarse material cylinder and to the hopper. The coarse powder mill is equipped with multiple powder rollers for coarsely crushing the raw materials. A screen is installed inside the outer casing to screen the particle size of the powder rollers. A feeding screw is rotatably installed inside the coarse material cylinder.

[0018] Furthermore, the crushing disc includes an outer protective plate, an upper protective cover, and a lower protective cover. The upper and lower protective covers form a crushing chamber. The lower and upper protective covers are fixed and restricted by the outer protective plate. A locking screw is provided on the outer protective plate for fastening. A feed pipe is provided on the upper protective cover to allow material to enter the crushing chamber. The feed pipe is connected to one end of a feeder. A return pipe is also provided on the upper protective cover to guide larger particles from the screen into the crushing chamber. An air supply baffle is fixedly installed inside the lower protective cover. An air supply baffle and the lower protective cover form an airflow distribution chamber. Multiple guide holes are inclinedly provided on the air supply baffle to allow the airflow to form a vortex in the crushing chamber. An air inlet pipe is fixedly installed on the lower protective cover. One end of the air inlet pipe is fixedly connected to a high-pressure air pipe, and the other end of the air inlet pipe is located in the airflow distribution chamber.

[0019] This invention also discloses a pulverizing method using a low-GI rice flour production raw material pulverizing device, comprising the following steps:

[0020] S1. The raw material is coarsely crushed by the powder roller in the coarse powder mill, then screened by the screen, and then the coarsely crushed raw material is conveyed to the feeder by the feeding screw. The airflow in the feeder carries the coarsely crushed raw material evenly into the crushing chamber in the crushing disc.

[0021] S2. After the high-pressure gas enters the crushing chamber, it forms a vortex to drive the raw materials to collide. The raw materials collide with each other after entering the crushing chamber to achieve the crushing effect.

[0022] S3. The crushed particles are carried by the airflow through the distribution pipe into the distribution box. Inside the distribution box, the baffle plate reduces the airflow velocity so that larger particles fall to the bottom of the distribution box.

[0023] S4. Larger particles at the bottom of the distribution box are transported back to the crushing chamber for secondary crushing via the return plate.

[0024] S5. The airflow and raw materials that have passed through the distribution box will enter the air-powder separation system for collection.

[0025] S6. The material collected in the gas-powder separation system will be temporarily stored in the collection bucket, while the airflow will be discharged from the device after being processed by the gas treatment and emission system.

[0026] The beneficial effects of this invention compared with the prior art are: (1) This device controls the efficiency and effect of raw material crushing by setting a feeder and a screener. At the same time, by adjusting the feeder and the screener, the particle size of the raw material after crushing can be adjusted.

[0027] (2) This device coarsely crushes the raw materials by using a powder roller and a screen, thereby controlling the particle size entering the crushing pan. This not only reduces the pre-processing steps of this device, but also avoids the material from staying in the crushing pan for a long time, thus reducing the crushing efficiency of the crushing pan.

[0028] (3) This device adjusts the upper and lower semicircular blocks in the feeder to control the speed at which the airflow carries the raw material into the crushing disc, thereby adjusting the amount of material in the crushing disc and thus controlling the particle size and working efficiency after crushing.

[0029] (4) This device sets up a baffle plate in the material distribution box to decelerate and guide the airflow carrying the crushed material, so that the raw material with a larger mass can be transported by gravity and return material turn plate and returned to the crushing chamber for secondary crushing, thereby improving the uniformity of the particle size of the crushed particles of this device. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the high-pressure air pipe structure of the present invention.

[0032] Figure 3 This is a schematic diagram of the outer casing structure of the present invention.

[0033] Figure 4 This is a schematic diagram of the synchronous transmission mechanism of the present invention.

[0034] Figure 5This is a cross-sectional structural diagram of the hopper, outer casing, powder roller, and screen of the present invention.

[0035] Figure 6 This is a cross-sectional structural diagram of the hopper, coarse powder mill, feeder, and crushing disc of the present invention.

[0036] Figure 7 This is a cross-sectional structural diagram of the coarse powder mill and feeder of the present invention.

[0037] Figure 8 This is a schematic diagram of the feeder structure of the present invention.

[0038] Figure 9 This is a schematic diagram of the gear structure of the present invention.

[0039] Figure 10 This is a cross-sectional structural diagram of the feeder housing, auxiliary slide plate, and main slide plate of the present invention.

[0040] Figure 11 This is a cross-sectional structural diagram of the outer protective plate, upper protective cover, return pipe, lower protective cover, and air supply baffle of the present invention.

[0041] Figure 12 This is a cross-sectional structural diagram of the lower cover and air supply baffle of the present invention.

[0042] Figure 13 This is a cross-sectional structural diagram of the crushing disc and sieve of the present invention.

[0043] Reference numerals: 10-Hopper; 101-Feeding air pipe; 102-High-pressure air pipe; 20-Coarse powder mill; 201-Outer casing; 202-Coarse material motor; 203-Coarse material cylinder; 204-Powder roller; 205-Screw; 206-Feeding screw; 30-Feeder; 301-Feeder housing; 302-Handle screw; 303-Slide rod; 304-Upper gear; 305-Upper semicircular block; 306-Upper pressure rod; 307-Auxiliary slide plate; 308-Main slide plate; 309-Lower pressure rod; 310-Lower semicircular block; 3 11-Lower gear; 40-Grinding disc; 401-Outer protective plate; 402-Upper protective cover; 403-Feed pipe; 404-Return pipe; 405-Locking screw; 406-Lower protective cover; 407-Air supply baffle; 408-Air inlet pipe; 50-Screwing device; 501-Distribution box; 502-Blocking plate; 503-Synchronous transmission mechanism; 504-Distribution pipe; 505-Discharge pipe; 506-Return plate; 507-Distribution return pipe; 60-Gas-powder separation system; 70-Collection bucket; 80-Gas treatment and emission system. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0045] Example 1:

[0046] This embodiment discloses a raw material grinding device for low-GI rice flour production, specifically as follows: Figures 1 to 3 As shown, the device includes a hopper 10, a feeding air pipe 101, and a high-pressure air pipe 102. The hopper 10 is the raw material inlet of the device, and cleaned rice flour raw materials, such as rice, barley, brown rice, and chickpeas, can be directly fed into the hopper 10. A coarse grinder 20 is installed at the bottom of the hopper 10 to coarsely grind the raw materials. A feeder 30 is connected to the bottom of the coarse grinder 20. The feeder 30 is used to control the grinding efficiency and the fineness of the finished product during the operation of the device. The feeder 30 can be adjusted by system control or manual control. One end of the feeder 30 is connected to the feeding air pipe 101, and the other end of the feeder 30 is connected to a grinding disc 40. The grinding disc 40 is used to drive the raw materials to collide with each other for fine grinding by airflow. The grinding disc 40 is connected to the high-pressure air pipe 102. High-pressure, high-speed airflow is input into the crushing disc 40. A screen 50 is connected to the crushing disc 40 to screen the finely crushed raw materials. The screen 50 can also send the screened coarser particles back to the crushing disc 40 for secondary crushing to ensure that there are no large-diameter particles in the raw materials. One end of the screen 50 is connected to an air-powder separation system 60, which is used to separate the crushed material from the airflow. The air-powder separation system 60 generally uses cyclone separation and bag dust collection to collect the crushed raw materials. A collection bucket 70 is set at the bottom of the air-powder separation system 60 to collect the crushed raw materials. A gas treatment and emission system 80 is set on one side of the air-powder separation system 60 to treat the airflow. The airflow flows out of the device after being treated by the gas treatment and emission system 80.

[0047] In operation, the raw material to be pulverized is added to the hopper 10. Then, the feeding air pipe 101 is connected to the airflow pipe, and the high-pressure air pipe 102 is connected to the high-pressure, high-speed airflow pipe. The raw material undergoes a first coarse pulverization in the coarse pulverizer 20, roughly pulverizing it into particles of 200 to 400 micrometers. At this point, the raw material exits the coarse pulverizer 20 at a controlled, uniform speed through the outlet and enters the feeder 30. As the airflow passes through the feeder 30, the raw material is carried by the airflow into the pulverizing disc 40. The high-pressure, high-velocity airflow within the pulverizing disc 40 creates a vortex, causing the raw material to collide with each other, thus achieving the effect of airflow pulverization. After collision and pulverization, the raw material gradually becomes smaller. At this point, the mass of a single raw material is sufficient for the airflow to carry it out of the pulverizing disc 40, where it then enters the screen 50 for screening. The screening is to prevent the airflow from carrying large particles of raw material, further ensuring the quality of the crushed material after crushing. After being screened by the screener 50, the coarser particles are collected by the screener 50 and sent to the crushing disc 40 for secondary crushing. The qualified particles enter the air-powder separation system 60 for raw material collection. The raw material collection generally adopts the collection method of bag filter. Multiple sets of bag filters are set to improve the collection efficiency. The particles collected by the bag collector fall into the collection bucket 70 by natural falling. The airflow enters the atmosphere through the gas treatment and emission system 80. The particle size of the finely crushed particles in this device is between 30 and 50 micrometers. If it is necessary to control the particle size to be even smaller, the feeding speed at the feeder 30 can be adjusted, and the separation mechanism in the screener 50 can be adjusted at the same time.

[0048] Example 2:

[0049] This embodiment further elaborates on the coarse powder mill 20 based on Embodiment 1, specifically as follows: Figures 3 to 7As shown, the coarse powder mill 20 includes an outer casing 201 and a coarse material cylinder 203. The outer casing 201 is fixedly connected to the coarse material cylinder 203 and to the hopper 10. The end of the outer casing 201 that is fixedly connected to the hopper 10 is the upper end. The connection point between the coarse material cylinder 203 and the outer casing 201 is at the lower end of the outer casing 201. The coarse powder mill 20 is equipped with multiple powder rollers 204 for coarsely crushing the raw materials. The powder rollers 204 mainly adopt a roller crushing method, primarily to allow the device to adapt to different types of raw materials, such as the difference in particle size between barley and rice. A screen 205 is installed inside the outer casing 201 to screen the particle size after passing through the powder rollers 204. Simultaneously, the screen 205 also prevents the raw materials from falling directly into the next stage. The shape of the screen 205 is similar to that of the powder rollers 201. 4. The operating trajectories are similar. The gap between the screen 205 and the powder roller 204 and the particle size of the aperture on the screen 205 determine the coarseness of the raw material crushing. A coarse material motor 202 is fixedly installed on the outer wall of the coarse material cylinder 203. A feeding screw 206 is fixedly installed on the output shaft of the coarse material motor 202. The feeding screw 206 is rotatably installed inside the coarse material cylinder 203. The feeding screw 206 controls the quantity and speed of the material input into the feeder 30 of the coarse powder mill 20 by rotation. At the same time, the feeding screw 206 can also prevent the airflow in the feeder 30 from directly rushing into the coarse powder mill 20 and affecting the speed at which the raw material enters the outer casing 201. Here, the feeding screw 206 can be regarded as a feeding speed control device. The end of the coarse material cylinder 203 away from the outer casing 201 is set inside the feeder 30. The connection point between the coarse material cylinder 203 and the feeder 30 is set in the middle of the feeder 30.

[0050] Example 3:

[0051] This embodiment further elaborates on the feeder 30 based on Embodiment 1, specifically as follows: Figures 6 to 10 As shown, the feeder 30 is set at a 40-degree angle within this device, with its setting angle relative to the horizontal position being 40 degrees. The feeder 30 includes a feeder housing 301, one end of which is connected to the feed air pipe 101, and the other end of which is connected to the crushing disc 40. The end of the feeder housing 301 connected to the feed air pipe 101 is the highest end of the feeder housing 301, while the end of the feeder housing 301 connected to the crushing disc 40 is the lowest end of the feeder housing 301. This inclined setting is to facilitate the entry of materials into the crushing disc 40.

[0052] An upper semicircular block 305 is rotatably installed at one end of the feeding air pipe 101 inside the feeding machine box 301. The upper semicircular blocks 305 are symmetrically arranged inside the feeding machine box 301. The upper semicircular blocks 305 are semicircular. The two upper semicircular blocks 305 form a funnel-shaped through hole inside the feeding machine box 301. The upper semicircular blocks 305 can rotate synchronously inside the feeding machine box 301 to adjust the airflow velocity entering the feeding machine box 301 from the feeding air pipe 101. When the symmetrically arranged upper semicircular blocks 305 form a funnel shape and the larger end of the funnel faces the feeding air pipe 101, the upper semicircular blocks 305 will increase the airflow velocity.

[0053] A lower semicircular block 310 is rotatably installed at the end of the feeder housing 301 away from the feeder air pipe 101. The lower semicircular blocks 310 are symmetrically arranged in the feeder housing 301. The lower semicircular blocks 310 are semicircular. The two lower semicircular blocks 310 form a funnel-shaped through hole in the feeder housing 301. When the symmetrically arranged lower semicircular blocks 310 form a funnel shape and the larger end of the funnel faces the crushing disc 40, the lower semicircular blocks 310 can reduce the flow velocity of the airflow when it flows out of the feeder housing 301, and prevent the airflow carrying raw materials from rushing into the crushing disc 40 at high speed. Compared with the upper semicircular block 305, the diameter of the lower semicircular block 310 is larger than that of the upper semicircular block 305. This is to facilitate the feeder 30 to reduce the speed of the airflow.

[0054] An upper pressure rod 306 is fixedly installed on the outer wall of the upper semicircular block 305. A secondary sliding plate 307 is provided inside the feeding machine housing 301. The secondary sliding plates 307 are symmetrically arranged inside the feeding machine housing 301. A flexible connecting piece is provided between the secondary sliding plate 307 and the upper semicircular block 305 to facilitate subsequent movement of the secondary sliding plate 307 and the upper semicircular block 305. The upper pressure rod 306 on the upper semicircular block 305 is engaged with the secondary sliding plate 307. When the upper semicircular block 305 rotates, it can drive the secondary sliding plate 307 to slide within the feeding machine housing 301 via the upper pressure rod 306. The sliding direction of the secondary sliding plate 307 is... Figure 10 The slide plate 307 is slidably mounted on the main slide plate 308, and the main slide plate 307 and the main slide plate 308 are used to restrict the airflow path and space.

[0055] A downward pressure rod 309 is fixedly installed on the outer wall of the lower semicircular block 310. The downward pressure rod 309 is engaged with the main slide plate 308. The downward pressure rod 309 is used to drive the main slide plate 308 to slide within the feeder housing 301. Figure 10 The middle slide moves up and down together with the secondary slide plate 307. A flexible connecting piece is provided between the main slide plate 308 and the lower semicircular block 310 to fill the gap.

[0056] Example 4:

[0057] This embodiment, based on embodiment 3, further elaborates on the structure within the feeder housing 301, specifically as follows: Figures 8 to 10 As shown, an upper gear 304 is fixedly installed at one end of the upper semicircular block 305. The upper gear 304 is set on the outer wall of the feeding machine box 301. The two upper gears 304 on the outer wall of the feeding machine box 301 are symmetrically arranged and mesh with each other. Angle scale lines are also provided on the outer wall of the feeding machine box 301 around the upper gear 304 to mark the rotation angle of the upper semicircular block 305 inside the feeding machine box 301, so as to facilitate the user to adjust the funnel shape formed by the two upper semicircular blocks 305.

[0058] A lower gear 311 is fixedly installed at one end of the lower semicircular block 310. The lower gear 311 is set on the outer wall of the feeding machine box 301. The two lower gears 311 on the outer wall of the feeding machine box 301 are symmetrically arranged and mesh with each other. Angle scale lines are also provided on the outer wall of the feeding machine box 301 around the lower gear 311 to mark the rotation angle of the lower semicircular block 310 inside the feeding machine box 301, so as to facilitate the user to adjust the funnel shape formed by the two lower semicircular blocks 310.

[0059] A handle screw 302 is rotatably mounted on the outer wall of the feeding machine housing 301. The handle screw 302 is used for user adjustment. A slide rod 303 is slidably mounted on the outer wall of the feeding machine housing 301. The slide rod 303 is threadedly connected to the handle screw 302. One end of the slide rod 303 is rotatably connected to one side of the upper gear 304 to drive the upper gear 304 to rotate. The other end of the slide rod 303 is rotatably connected to one side of the lower gear 311 to drive the lower gear 311 to rotate. A scale is provided on the outer wall of the feeding machine housing 301 to indicate the adjustment position of the slide rod 303.

[0060] During the operation of the feeder 30, its feeding air pipe 101 injects airflow into the feeder 30. The purpose of this airflow is to carry the raw material entering the feeder 30 into the crushing disc 40. The raw material and airflow converge between the main slide plates 308 inside the feeder housing 301. The funnel shape formed by the two upper semicircular blocks 305 inside the feeder housing 301 is to increase the airflow velocity, allowing the airflow to impact the raw material between the main slide plates 308, preventing the raw material from clogging or stagnating between the main slide plates 308. After the airflow accelerates through the main slide plates 308, it then passes between the lower semicircular blocks 310. The flared opening formed by 310 can reduce the airflow velocity. This is to prevent the airflow velocity from rushing into the crushing disc 40 too fast, thereby disrupting the airflow crushing path in the crushing disc 40. In existing equipment, the same solution is used to treat the airflow to avoid blockage. However, in this device, by rotating the handle screw 302, the handle screw 302 drives the slide bar 303 to move on the outer wall of the feeder box 301. When the slide bar 303 moves, it can drive the upper gear 304 and the lower gear 311 to rotate synchronously, thereby changing the shape of the flared opening at the upper semicircular block 305 and the lower semicircular block 310.

[0061] When the slide bar 303 moves toward the direction of the feeding air pipe 101 (at Figure 9 (Move from center to left), which will cause the two upper hemispheres 305 to rotate. Figure 10 In the middle, the lower upper semicircular block 305 rotates counterclockwise, and the upper upper semicircular block 305 rotates clockwise. This reduces the larger end of the funnel shape formed by the upper semicircular block 305, while expanding the smaller end, thus weakening the airflow acceleration effect. Simultaneously, the slide rod 303 also rotates the lower gear 311. Figure 10 In the middle, the lower semicircular block 310 rotates counterclockwise, and the upper lower semicircular block 310 rotates clockwise. This expands the larger end of the flared opening at the lower semicircular block 310, thereby improving the speed reduction effect of the lower semicircular block 310 on the airflow. At the same time, the auxiliary slide plate 307 and the main slide plate 308 also move with the upper semicircular block 305. The auxiliary slide plate 307 and the main slide plate 308 are mainly for maintaining the airflow range. Under these circumstances, the airflow velocity of this device will be reduced, thereby reducing the hourly production efficiency of this device to prevent the accumulation of raw materials in the crushing disc 40. Conversely, when the slide bar 303 moves away from the feeding air pipe 101 (in... Figure 9 (Move from center to right). At this time, the larger end of the flare at the upper semicircular block 305 is enlarged, thereby improving the acceleration effect of the airflow at the upper semicircular block 305, while the larger end of the flare at the lower semicircular block 310 is reduced, thereby reducing the deceleration effect of the airflow at the upper semicircular block 305. This effect is to improve the processing efficiency of this device per hour and adapt to different production conditions.

[0062] Example 5:

[0063] This embodiment further elaborates on the pulverizing disc 40 based on Embodiment 1, specifically as follows: Figure 3 , Figure 4 , Figure 6 , Figures 11 to 13 As shown, the crushing disc 40 includes an outer protective plate 401, an upper protective cover 402, and a lower protective cover 406. The upper protective cover 402 and the lower protective cover 406 form a crushing chamber. The lower protective cover 406 and the upper protective cover 402 are fixed and restricted by the outer protective plate 401. A locking screw 405 is provided on the outer protective plate 401 for fastening. A feed pipe 403 is provided on the upper protective cover 402 to allow material to enter the crushing chamber. The feed pipe 403 is connected to one end of the feeder 30. A return pipe 404 is also provided on the upper protective cover 402 to guide larger particles from the screen 50 into the crushing chamber. The lower protective cover 406 contains... An air supply baffle 407 is fixedly installed, forming an airflow distribution chamber between the air supply baffle 407 and the lower cover 406. The air supply baffle 407 is provided with multiple guide holes at an incline. The guide holes on the air supply baffle 407 are used to allow the airflow to form a vortex in the crushing chamber, driving the material to collide and crush. An air inlet pipe 408 is fixedly installed on the lower cover 406. One end of the air inlet pipe 408 is fixedly connected to the high-pressure air pipe 102, and the other end of the air inlet pipe 408 is located in the airflow distribution chamber. The high-pressure airflow enters the airflow distribution chamber through the high-pressure air pipe 102 and the air inlet pipe 408, and then enters the crushing chamber through the guide holes on the air supply baffle 407.

[0064] Example 6:

[0065] This embodiment further elaborates on the screening device 50 based on Embodiment 1, specifically as follows: Figure 3 , Figure 4 , Figure 13As shown, the screening device 50 includes a distribution box 501. A distribution pipe 504 is provided at one end of the distribution box 501. One end of the distribution pipe 504 is connected to the screening device 50 to allow airflow to carry the pulverized material into the distribution box 501. A discharge pipe 505 is fixedly installed at one end of the distribution box 501. The other end of the discharge pipe 505 is connected to the air-powder separation system 60. The connection point between the discharge pipe 505 and the distribution box 501 is higher than the connection point between the distribution box 501 and the distribution pipe 504. A baffle plate 502 is rotatably installed inside the distribution box 501. The baffle plate 502 is inclined inside the distribution box 501 to guide the airflow direction. Multiple baffle plates 502 are evenly distributed in a stepped manner to slow down the airflow velocity and guide the airflow direction. The airflow direction is adjusted so that larger particles carried by the airflow fall to the bottom of the distribution box 501 by gravity. A synchronous transmission mechanism 503 is provided at one end of the baffle plate 502 outside the distribution box 501. The synchronous transmission mechanism 503 realizes the synchronous rotation of the baffle plate 502 in the same direction through multiple gears. A return plate 506 is rotatably installed at the lowest point of the bottom of the distribution box 501. The return plate 506 is used to send larger particles out of the distribution box 501. The return plate 506 can also prevent the airflow in the crushing disc 40 from directly entering the distribution box 501. A distribution return pipe 507 is fixedly installed at one end of the distribution box 501 where the return plate 506 is located. The distribution return pipe 507 is connected to the crushing disc 40 to allow larger particles to return to the crushing disc 40.

[0066] Working principle:

[0067] In operation, the raw material is fed into the hopper 10 and then coarsely ground by the coarse grinder 20. The coarse grinder 20 pulverizes the raw material through the rotation of the powder roller 204, reducing it to particles of 200 to 400 micrometers (the grinding effect of the coarse grinder 20 is constant). The coarsely ground material is then uniformly fed into the feed box 301 by the feed screw 206. The coarsely ground material falls between the main slide plates 308, while the material entering the feed box 301 is carried by the airflow into the grinding chamber of the grinding disc 40. The airflow in the grinding chamber causes the material to collide with each other, thus achieving the grinding process. The airflow in the grinding disc 40 also carries the material into the grinding chamber. The material in the chamber enters the distribution box 501 through the distribution pipe 504. When the airflow flows out of the distribution pipe 504, it will hit the baffle plate 502. The baffle plate 502 can not only reduce the airflow velocity, but also guide the airflow towards the discharge pipe 505. In the path of the airflow and crushed particles to the discharge pipe 505, some heavier particles will fall to the bottom of the distribution box 501 and then be sent back to the crushing chamber by the return plate 506 for re-collision and crushing. The airflow and particle material that enter the discharge pipe 505 will enter the gas-powder separation system 60 for collection. The collected material will fall naturally into the collection bucket 70 for collection. The airflow is then processed by the gas treatment and emission system 80 before being discharged from the device.

[0068] During the operation of this device, due to the different hardness of the particles to be crushed and the different particle sizes required for the finished product, this device controls the particle size of the finished powder by adjusting the quantity and speed of the material entering the crushing disc 40. At this time, the rotation speed of the feeding screw 206 can be reduced, and the screw 302 can be rotated by an external motor or by direct manual drive, thereby adjusting the airflow velocity in the feeding box 301 to achieve a fixed quantity of material entering the crushing disc 40 at a fixed time. At the same time, the tilt angle of the baffle plate 502 can be adjusted by rotating the synchronous transmission mechanism 503. 2. The smaller the tilt angle, the smaller the particle size of the particles screened by the material distribution box 501. Conversely, if it is necessary to improve the production efficiency of this device, the airflow speed and the rotation speed of the feeding screw 206 in the feeding box 301 can be increased by adjusting the handle screw 302. This increases the amount of material in the input crushing disc 40. At the same time, the synchronous transmission mechanism 503 is rotated to increase the tilt angle of the baffle plate 502, thereby reducing the size of the particles screened in the material distribution box 501. The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

[0069] This invention also discloses a pulverizing method, using the aforementioned low-GI rice flour production raw material pulverizing equipment, comprising the following steps:

[0070] S1. The raw material is coarsely crushed by the powder roller 204 in the coarse powder mill 20, then screened by the screen 205, and then the coarsely crushed raw material is conveyed to the feeder 30 by the feed screw 206. The airflow in the feeder 30 carries the coarsely crushed raw material into the crushing chamber in the crushing disc 40 evenly.

[0071] S2. After the high-pressure gas enters the crushing chamber, it forms a vortex to drive the raw materials to collide. The raw materials collide with each other after entering the crushing chamber to achieve the crushing effect.

[0072] S3. The crushed particles are carried by the airflow through the distribution pipe 504 into the distribution box 501. Inside the distribution box 501, the baffle plate 502 reduces the airflow velocity so that larger particles fall to the bottom of the distribution box 501.

[0073] S4. Larger particles at the bottom of the feed box 501 are transported back to the crushing chamber for secondary crushing via the return plate 506.

[0074] S5. The airflow and raw materials that have passed through the distribution box 501 will enter the air-powder separation system 60 for collection.

[0075] S6. The material collected in the gas-powder separation system 60 will be temporarily stored in the collection bucket 70, while the airflow will be discharged from the device after being processed by the gas treatment and discharge system 80.

Claims

1. A raw material crushing device for low-GI rice flour production, comprising a hopper, a feeding air pipe, and a high-pressure air pipe, characterized in that: The hopper is the raw material inlet of this device. A coarse grinder is installed at the bottom of the hopper to coarsely grind the raw material. One end of the coarse grinder is connected to a feeder. The grinding disc is connected to a high-pressure air pipe, which is used to input high-pressure and high-speed airflow into the grinding disc. The grinding disc drives the raw material to collide with each other for fine grinding through the airflow. A screen is connected to the grinding disc to screen the raw material that has passed through fine grinding. The screen can also send the coarser particles that have been screened back to the grinding disc for secondary grinding. One end of the screen is connected to an air-powder separation system, which is used to separate the crushed material from the airflow. A collection bucket is installed at the bottom of the air-powder separation system to collect the crushed raw material. A gas treatment and emission system is installed on one side of the air-powder separation system to treat the airflow. The airflow flows out of the device after being treated by the gas treatment and emission system. The feeder includes a feeder housing, one end of which is connected to the feeding air pipe, and the other end of which is connected to the crushing disc. An upper semicircular block is rotatably installed inside the feeder housing near the feeding air pipe. The upper semicircular blocks are symmetrically arranged inside the feeder housing. The upper semicircular blocks are semicircular, and the two upper semicircular blocks form a funnel-shaped through hole inside the feeder housing. A lower semicircular block is rotatably installed at the end of the feeder housing away from the feeder air pipe. The lower semicircular blocks are symmetrically arranged inside the feeder housing. The two lower semicircular blocks form a funnel-shaped through hole inside the feeder housing. An upper pressure rod is fixedly installed on the outer wall of the upper semicircular block. A secondary slide plate is set inside the feeding machine box. The secondary slide plates are symmetrically arranged inside the feeding machine box. The upper pressure rod on the upper semicircular block is stuck on the secondary slide plate. A pressure rod is fixedly installed on the outer wall of the lower semicircular block. The pressure rod is snapped into the main slide plate and is used to drive the main slide plate to slide in the feeder box. An upper gear is fixedly installed at one end of the upper semicircular block. The upper gear is set on the outer wall of the feeder box. The two upper gears on the outer wall of the feeder box are symmetrically arranged and mesh with each other. A lower gear is fixedly installed at one end of the lower semicircular block. The lower gear is set on the outer wall of the feeder box. The two lower gears on the outer wall of the feeder box are symmetrically arranged and mesh with each other. A slide rod is slidably installed on the outer wall of the feeder box. The slide rod is connected to the handle screw by a thread. One end of the slide rod is rotatably connected to one side of the upper gear to drive the upper gear to rotate. The other end of the slide rod is rotatably connected to one side of the lower gear to drive the lower gear to rotate. The raw material and airflow converge between the main slide plates inside the feeder box.

2. The raw material grinding equipment for low-GI rice flour production according to claim 1, characterized in that: The screening device includes a material distribution box, one end of which is equipped with a material distribution pipe. One end of the material distribution pipe is connected to the screening device to allow airflow to carry the crushed material into the material distribution box. One end of the material distribution box is fixedly installed with a discharge pipe, and the other end of the discharge pipe is connected to the air-powder separation system. Inside the material distribution box, there are rotating baffles. The baffles are tilted inside the material distribution box to guide the airflow direction. Multiple baffles are evenly distributed in a stepped manner. The multiple baffles are used to slow down the airflow speed inside the material distribution box and guide the airflow direction, so that larger particles carried by the airflow fall to the bottom of the material distribution box by gravity. A return plate is rotatably installed at the lowest point of the distribution box. The return plate is used to send larger particles out of the distribution box. The return plate also prevents airflow from the crushing disc from directly entering the distribution box. A distribution return pipe is fixedly installed at the end of the distribution box where the return plate is located. The distribution return pipe is connected to the crushing disc to allow larger particles to return to the crushing disc.

3. The raw material crushing equipment for low-GI rice flour production according to claim 2, characterized in that: The coarse powder mill includes an outer casing and a coarse material cylinder. The outer casing is fixedly connected to the coarse material cylinder and to the hopper. The coarse powder mill is equipped with multiple powder rollers for coarsely crushing the raw materials. A screen is installed inside the outer casing to screen the particle size of the powder rollers. A feeding screw is rotatably installed inside the coarse material cylinder.

4. The raw material grinding equipment for low-GI rice flour production according to claim 3, characterized in that: The crushing disc includes an outer protective plate, an upper protective cover, and a lower protective cover. The upper and lower protective covers form a crushing chamber. The lower and upper protective covers are fixed and restricted by the outer protective plate, which is equipped with locking screws for fastening. The upper protective cover is equipped with a feed pipe to allow materials to enter the crushing chamber. The feed pipe is connected to one end of a feeder. The upper protective cover is also equipped with a return pipe to guide larger particles from the screen into the crushing chamber. An air supply baffle is fixedly installed inside the lower protective cover, forming an airflow distribution chamber between the air supply baffle and the lower protective cover. Multiple guide holes are inclinedly arranged on the air supply baffle to allow the airflow to form a vortex in the crushing chamber. An air inlet pipe is fixedly installed on the lower protective cover. One end of the air inlet pipe is fixedly connected to a high-pressure air pipe, and the other end of the air inlet pipe is located in the airflow distribution chamber.

5. A method for pulverizing raw materials for low-GI rice flour production, applied to the raw material pulverizing equipment for low-GI rice flour production according to claim 4, characterized in that, The pulverization method includes the following steps: S1. The raw material is coarsely crushed by the powder roller in the coarse powder mill, then screened by the screen, and then the coarsely crushed raw material is conveyed to the feeder by the feeding screw. The airflow in the feeder carries the coarsely crushed raw material evenly into the crushing chamber in the crushing disc. S2. After the high-pressure gas enters the crushing chamber, it forms a vortex to drive the raw materials to collide. The raw materials collide with each other after entering the crushing chamber to achieve the crushing effect. S3. The crushed particles are carried by the airflow through the distribution pipe into the distribution box. Inside the distribution box, the baffle plate reduces the airflow velocity so that larger particles fall to the bottom of the distribution box. S4. Larger particles at the bottom of the distribution box are transported back to the crushing chamber for secondary crushing via the return plate. S5. The airflow and raw materials that have passed through the distribution box will enter the air-powder separation system for collection. S6. The material collected in the gas-powder separation system will be temporarily stored in the collection bucket, while the airflow will be discharged from the device after being processed by the gas treatment and emission system.

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