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CN-121988419-A - Low-breakage-rate flexible milling and shelling device and method for paddy

CN121988419ACN 121988419 ACN121988419 ACN 121988419ACN-121988419-A

Abstract

The invention discloses a low-breakage-rate paddy flexible milling and shelling device, which comprises a case, wherein two shelling rollers which are matched with each other to finish paddy milling and shelling are arranged in the case in parallel, the two shelling rollers are respectively and independently connected with a driving motor, one shelling roller is a movable shelling roller, two ends of the movable shelling roller are correspondingly arranged on a movable frame through bearings, the movable frame is movably assembled in the case along the horizontal direction, and the opening of a striker plate is synchronously changed along with the movable shelling roller when the milling interval is changed by arranging a linkage assembly between the movable frame and the striker plate. When the grinding interval is adjusted to be large, the opening of the discharge port is synchronously increased, and when the grinding interval is adjusted to be small, the opening of the discharge port is synchronously reduced. The forward linkage mechanism ensures that the rice with different grain diameters can enter the milling area in a single-layer tiling state, excessive milling caused by stacking is avoided, and the broken rice rate is reduced from the source.

Inventors

  • YANG YUNAN

Assignees

  • 仙桃市元品米业有限公司

Dates

Publication Date
20260508
Application Date
20260325

Claims (10)

  1. 1. The low-breakage-rate paddy flexible milling and shelling device comprises a machine case, two shelling rollers which are matched with each other to finish paddy milling and shelling are arranged in the machine case in parallel, the two shelling rollers are respectively and independently connected with a driving motor, one of the shelling rollers is arranged as a movable shelling roller, two ends of the movable shelling roller are correspondingly arranged on a movable frame through bearings, the movable frame is movably assembled in the machine case along the horizontal direction, the milling space between the two shelling rollers is adjusted through displacement of the movable frame, a storage hopper is fixedly arranged above the two shelling rollers, a baffle plate is rotatably arranged at a discharge hole at the bottom of the storage hopper, and the size of the discharge hole at the bottom of the storage hopper is adjusted through rotation of the baffle plate.
  2. 2. The low-breakage-rate rice flexible milling and shelling device according to claim 1, wherein a rotating shaft is arranged on one side of the striker plate, two ends of the rotating shaft are in running fit with two sides of the bottom of the storage hopper, the linkage assembly comprises a driven gear, a driving gear and a telescopic rod, the driven gear is fixedly sleeved at the end of the rotating shaft of the striker plate, the driven gear and the driving gear are in meshed transmission, the driving gear is rotatably arranged on the inner wall of the chassis, the driving gear is fixedly connected with one end of the telescopic rod, and the other end of the telescopic rod is hinged with the movable frame.
  3. 3. The low-breakage-rate rice flexible milling and shelling device according to claim 2, wherein the telescopic rod comprises an inner rod and an outer rod which are sleeved with each other, the outer rod is of a hollow sleeve structure, the inner rod is inserted into the outer rod in a clearance fit manner, one end of the outer rod, which is far away from the inner rod, is fixedly connected with the driving gear, and one end of the inner rod, which is far away from the outer rod, is hinged with the movable frame.
  4. 4. A low-breakage-rate rice flexible milling and shelling device according to claim 1, wherein a driving cylinder is fixedly installed in the machine case, a cylinder body of the driving cylinder is fixedly connected with the inner wall of the machine case, a piston rod end of the driving cylinder is fixedly connected with the movable frame, and the piston rod stretches and contracts to drive the movable frame to move horizontally and directionally.
  5. 5. A low-breakage-rate rice flexible milling and shelling device according to claim 4, wherein a slide rail is provided in the inside of the cabinet corresponding to the moving path of the moving frame, a slider is mounted at the bottom of the moving frame, the slider is slidably engaged with the slide rail, and the moving frame horizontally moves along the slide rail through the slider.
  6. 6. The low-breakage-rate rice flexible milling and shelling device according to claim 2, wherein two ends of a rotating shaft of the material baffle are arranged on two sides of the bottom of the storage hopper through bearings, one end of the rotating shaft extends out of the storage hopper to be fixedly connected with the driven gear, and the surface of the material baffle is attached to a discharge hole at the bottom of the storage hopper.
  7. 7. A low-breakage-rate rice flexible milling and shelling device according to claim 1, wherein a guide plate is obliquely arranged between the discharge port of the storage hopper and the two shelling rollers, the upper end of the guide plate is abutted against the discharge port of the storage hopper, and the lower end of the guide plate extends to above a milling area between the two shelling rollers.
  8. 8. A low-breakage rate rice flexible milling and shelling device as in claim 1, wherein both of the shelling roll surfaces are coated with a flexible wear layer.
  9. 9. The low-breakage-rate rice flexible milling and shelling device according to claim 1, wherein the inside of the case is obliquely provided with a louver corresponding to the lower parts of the two shelling rollers, the side wall of the case is provided with a dust suction pipe, and the air inlet end of the dust suction pipe is opposite to the upper area of the louver.
  10. 10. The low-breakage-rate flexible rice milling and shelling method is characterized by comprising the following steps of: Controlling the driving cylinder to stretch and drive the movable frame to horizontally move according to the grain size of the rice, adjusting the grinding interval between the two shelling rollers, adjusting the larger the grinding interval of the grain to be larger, synchronously driving the material baffle to rotate by the movable frame moving through the linkage assembly, synchronously expanding a discharge hole at the bottom of the storage hopper, and ensuring single-layer tiling and discharging of the rice; Step two, starting two groups of driving motors to drive the two shelling rollers to operate in a differential mode; thirdly, putting the rice to be shelled into the storage hopper, wherein the rice falls between two shelling rollers in a single-layer tiling manner after being limited by the material baffle and guided by the material guide plate, and shelling is completed through flexible rubbing of the roller bodies; And fourthly, the shelled cereal mixture falls onto the fish scales, is guided and discharged through the fish scales, and simultaneously, impurities generated by grinding are discharged through the air suction pipe to finish processing.

Description

Low-breakage-rate flexible milling and shelling device and method for paddy Technical Field The invention relates to the technical field of grain processing machinery, in particular to a low-breakage-rate flexible rice milling and shelling device and method. Background The rice processing is a process of removing the shell of the rice and preparing the rice, wherein the shelling link is mainly finished by a rice huller. At present, rubber roll huller has become mainstream equipment in the rice processing industry because of its advantages such as high efficiency of shelling, the complete rate of brown rice is good. The basic working principle of the rubber roll rice huller is that a pair of rubber rolls which rotate relatively rotate at different linear speeds, and rice enters a milling area between the two rolls and is extruded and rubbed and torn to separate the rice hulls from the brown rice. In the rubber roll huller, the milling space (i.e., rolling distance) between the two rolls has a decisive influence on the hulling effect and the quality of the brown rice. The interval is too small, the pressure between the rollers is increased, the surface of the brown rice is easily blackened and fluffed, and even cracks and breaks are generated, so that the broken rice rate is obviously increased, the interval is too large, the shelling rate is reduced, part of rice cannot be shelled, repeated hulling is needed, and the energy consumption and the rice damage risk are increased. Therefore, accurate adjustment of the milling interval according to the variety of rice, the grain size and other factors is a key operation for ensuring the shelling effect and the product quality. For this reason, various grinding gap adjustment mechanisms have been developed in the prior art. For example, chinese patent CN203577843U discloses a rice huller capable of adjusting the distance between rubber rolls, which drives a regulating rod to rotate through a hand wheel, and then moves a rotating shaft of a slow rubber roll to realize distance adjustment. Chinese patent CN206688785U discloses an experimental rice huller rubber roll gap adjustment mechanism, through the cooperation of regulating spindle and adjusting slide block, the movable transmission shaft drives the rubber roll and removes and realize gap adjustment. Chinese patent CN211838063U discloses a rubber roll gap adjusting structure of rice huller, which adopts threaded rod to drive screw sleeve, and drives two side roller sleeves to move synchronously through linkage plate. The technical scheme is that one roller is fixed, the other roller is movable, and the grinding space is adjusted by moving the roller seat. However, the grinding space adjusting mechanism and the feeding mechanism in the prior art are independent from each other and lack of linkage fit. In particular, the feeding mechanism of the rice huller generally includes a storage hopper and a flow rate adjusting device (such as a gate, a shutter, or a vibratory feeder) for controlling the flow rate of rice into the milling area. When an operator increases the milling space according to the grain size of the rice, if the discharge flow is not correspondingly adjusted, the problems that if the flow is too large, a large amount of rice is concentrated in a milling area, a single-layer tiling state cannot be formed, so that rice stacking is caused, the uniformity of husking is affected, the risk of grinding is increased due to too large local pressure, and if the flow is too small, the production efficiency is affected easily occur. Conversely, when the milling gap is reduced, if the flow rate is not reduced simultaneously, the material accumulation and excessive milling in the milling area are also caused. In addition, excessive processing problems are common in the current grain processing industry. Studies have shown that an unreasonable milling parameter setting is one of the important causes of increased rice breakage rate and loss of nutrients. On the premise of ensuring the shelling efficiency, the self-adaptive matching of the milling space and the blanking flow is realized, so that the rice always enters the milling area in a single-layer tiling state, the broken rice rate is reduced, the grain loss is reduced, and the technical problem to be solved is urgent. Disclosure of Invention The invention provides a low-breakage-rate flexible rice milling and shelling device and a method, and aims to solve the technical problems that in the prior art, milling gaps and blanking flow cannot be adjusted in a linkage mode, rice with different particle sizes is difficult to adapt, excessive milling is easy to cause, and the breakage rate is high. In order to achieve the technical purpose, according to the first aspect, the technical scheme of the invention provides a low-breakage-rate paddy flexible milling and shelling device, which comprises a machine case, wherein two shelling rollers which are matched with each o