A whole-closed combined oat cleaning machine and a method for cleaning oats

Abstract

The application discloses a kind of naked oats full closed combination grain cleaning machine and the method for cleaning naked oats, including rack, vibrating device, sieve box and sieve box cover, sieve box is fixedly connected with large impurity screen surface, small impurity screen surface, bottom plate, grading screen surface and stone removal screen surface;Bottom surface is provided with naked oats discharge pipe;The upper end surface of sieve box is fixedly connected with sieve box cover, and the sieve box cover is connected with feed inlet and air extraction interface;The rear end surface of grading screen surface is threadedly connected with air duct adjusting bolt, the air duct adjusting bolt passes through air duct adjusting plate, the upper end surface of air duct adjusting plate corresponds with the upper surface of grading screen surface, and the rear end surface of grading screen surface and air duct adjusting plate form air duct, the rear surface is fixedly connected with settling bottom plate, air duct adjusting plate is slidably connected with settling bottom plate, and the settling bottom plate, air duct adjusting plate and rear surface form taro settling chamber, and taro settling chamber is connected with taro outlet;After starting adjustment, cleaning large impurities, cleaning small impurities, material grading, cleaning taro, cleaning shoulder stone and shutdown steps, naked oats is cleaned, and the cleaning rate is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grain processing machinery, in particular to a whole-closed combined cleaning machine for hulless barley and a method for cleaning hulless barley. BACKGROUND

[0002] Hulless barley belongs to small grains, and the collected hulless barley is not classified, and the large and small particles are mixed, and the grass, shoulder stones and chaff are mixed together. The hulless barley needs to be cleaned before processing. The existing hulless barley cleaning machine is a screening machine. However, the screening machine cannot finely screen the hulless barley, and the particle classification of the hulless barley is not fine enough, which cannot improve the quality of the hulless barley. In addition, the screening machine produces a lot of dust, pollutes the environment, and has low efficiency, especially the shoulder stones cannot be cleaned out.

[0003] Publication No. CN203265063U discloses a specific gravity grading stone removing machine, which comprises a vibrating body, a vibrating motor and a rack. The vibrating body is fixed on the rack through an adjusting screw located at the front end of the bottom and an "eight" spring located at the rear end of the bottom. The upper end of the vibrating body is provided with a feeding port. A pre-separation screen body and a stone removing screen body are arranged in parallel in the vibrating body. The pre-separation screen body is located above the stone removing screen body, and the vibrating screen is connected below the stone removing screen body. The vibrating motor is installed at the rear end of the stone removing screen body. The front end of the stone removing screen body is provided with a material discharge port, and the rear end is provided with an impurity discharge port. A fan is arranged above the pre-separation screen body, and the fan is communicated with the pre-separation screen body through a wind pipe. The material enters the vibrating body through the feeding port. The seeds are first classified by the pre-separation screen body, and the fan is used to suck the material to a "boiling" state. The wind volume is adjusted by the adjusting handle to achieve the best light impurities, which are discharged through the fan. The seeds and stones fall into the stone removing screen body. The stones and dust fall through the discharge port due to the large specific gravity. The seeds are discharged from the discharge port of the stone removing screen body. The machine is mainly used for initial cleaning and head connection of peppers, and is used for classifying the peppers after close screening, concentrating light impurities (chickpea, grass seed, etc.) and removing stones. The machine can also be used for cleaning and seed selection of other grains.

[0004] The announcement number: CN208407606U discloses a dustproof graded oat screening machine, including base, the upper surface of base is uniformly installed damping spring, the upper surface of damping spring is installed bottom frame, the middle upper part of bottom frame is provided with flow guide plate, the lower middle part of bottom frame is installed vibration motor, the upper surface of bottom frame is provided with first screen frame, bottom frame and first screen frame are locked and fixed through first bundle ring, first screen frame is provided with first screen in, the lower end of right side of first screen frame is provided with first discharge port, the second screen frame is arranged on first screen frame, first screen frame and second screen frame are locked and fixed through second bundle ring, second screen frame is provided with second screen, the lower end of left side of second screen frame is provided with second discharge port, the third screen frame is arranged on the upper surface of second screen frame, second screen frame and third screen frame are locked and fixed through third bundle ring, the lower end of right side of third screen frame is provided with third discharge port, the upper surface of third screen frame is provided with dust cover, third screen frame and dust cover are locked and fixed through third bundle ring, the upper surface left of dust cover is provided with feeding port. Through first screen, second screen and third screen and equidistantly crossed inclined placement, the quality of screened product is higher, and grading is fine.

[0005] Through the search, no literature report of hulless oat full-closed combination grain cleaning machine has been found, the present applicant organizes relevant engineering and technical personnel, utilizes the working principle of specific gravity grading stone removing machine and dustproof graded oat screening machine, and develops hulless oat full-closed combination grain cleaning machine through repeated tests. SUMMARY

[0006] The purpose of the present application is to solve the problems of the prior art, and provide a hulless oat full-closed combination grain cleaning machine and a method for cleaning hulless oat.

[0007] The technical scheme of the present application is implemented in the following manner:

[0008] The whole closed combination millet cleaning machine comprises a rack, a vibrating device, a front, rear, left and right side and bottom sealed sieve box with an upper opening and a sieve box cover, the rack comprises a threshing machine rack, a vertical rod and a horizontal rod are fixedly connected to the threshing machine rack, a front support column is fixedly connected to the end of the horizontal rod, a front vibrating spring lower support rod is arranged on the front support column; a large impurity sieve surface, a small impurity sieve surface, a bottom plate, a grading sieve surface and a stone removal sieve surface are detachably and fixedly connected to the left and right side surfaces of the sieve box from top to bottom; a millet discharge pipe is arranged on the bottom surface of the sieve box; a sieve box cover is fixedly connected to the upper end surface of the sieve box, a feeding interface and an air extraction interface are connected to the sieve box cover, and the feeding interface and the air extraction interface are connected to the vertical rod; the vibrating device comprises a vibrating shaft fixedly connected to the bottom of the rear end of the left and right side surfaces, a front vibrating spring upper support rod fixedly connected to the front end of the bottom surface and a rear vibrating spring lower support base arranged on the rack, a vibrator is fixedly connected to the middle of the vibrating shaft, rear vibrating spring upper supports are fixedly connected to the two ends of the vibrating shaft, a rear vibrating spring is clamped between the rear vibrating spring upper supports and the rear vibrating spring lower support base, and a front vibrating spring is clamped between the front vibrating spring upper support rod and the front vibrating spring lower support rod; a wind channel adjusting bolt is threadedly connected to the rear end surface of the grading sieve surface, the wind channel adjusting bolt passes through a wind channel adjusting plate, the upper end surface of the wind channel adjusting plate corresponds to the upper surface of the grading sieve surface, a wind channel is formed between the rear end surface of the grading sieve surface and the wind channel adjusting plate, a settling bottom plate is fixedly connected to the rear side surface, the wind channel adjusting plate and the settling bottom plate are slidably connected, a starch sedimentation chamber is formed between the settling bottom plate, the wind channel adjusting plate and the rear side surface, and the starch sedimentation chamber is connected to a starch outlet; the large impurity sieve surface and the small impurity sieve surface are punched sieve plates, the front end of the large impurity sieve surface is connected to a large impurity outlet, the bottom plate is a light plate, the front end of the bottom plate is recessed from the front ends of the small impurity sieve surface and the grading sieve surface, and the rear end of the bottom plate is connected to a small impurity outlet; the front part of the grading sieve surface is a small punched hole, the middle part is a long circular punched hole, and the rear part is a large punched hole; the stone removal sieve surface is a steel wire woven sieve net; the front end of the stone removal sieve surface is connected to a stone impurity outlet; the air uniformizing plate is a punched plate; the left and right side surfaces between the grading sieve surface and the front part of the stone removal sieve surface are rotatably connected to a stone removal adjusting rotary shaft, a stone removal adjusting plate is fixedly connected to the stone removal adjusting rotary shaft, the stone removal adjusting plate is L-shaped, and a stone removal adjusting bolt is threadedly connected to the front side surface and the stone removal adjusting plate.

[0009] Preferably, the stone removal sieve surface is provided below with an air uniformizing plate.

[0010] Preferably, the feeding interface comprises a material collecting cylinder fixedly connected to the upper part of the vertical rod, a flow adjusting plate is arranged at the lower end of the material collecting cylinder, the material collecting cylinder is connected to the sieve box cover feeding port through a feeding soft cloth tube, a feeding port is arranged at the upper end of the material collecting cylinder, and the feeding port is connected to a feeder.

[0011] Preferably, the air extraction interface comprises an air extraction cylinder fixedly connected to the upper part of the vertical rod, an air volume adjusting plate is arranged on the air extraction cylinder, the lower end of the air extraction cylinder is connected to the sieve box cover air outlet through an air extraction soft cloth tube, and the upper end of the air extraction cylinder is connected to an air extractor.

[0012] Preferably, the large impurity sieve surface, the small impurity sieve surface, the bottom plate, the grading sieve surface and the stone removal sieve surface are arranged in a manner that the front is higher than the rear, and the inclination angle of the sieve surface with respect to the horizontal direction is 5-9°.

[0013] Preferably, the front support column is adjustable with the front shock spring lower support rod.

[0014] Preferably, the frequency of the shaker is 15.4-16.6 S -1 , and the amplitude is 4-5 mm.

[0015] The method for cleaning naked oats by using the naked oats full-closed combined cleaning machine, comprising the following steps:

[0016] Step 1, starting and adjusting: first start the air blower, then start the vibrator, adjust the air volume adjusting plate to be slightly larger, then start the feeder and open the flow adjusting plate; when the stone and impurity outlet has the naked oats, the air volume adjusting plate can be adjusted to be larger, and vice versa; at this time, the stone removing effect is observed, if the stone and impurity outlet has no stone, the material is observed, when it is found that the back end has stone accumulation, the back end of the stone removing adjusting plate is adjusted upward, when the naked oats are taken out, the back end of the stone removing adjusting plate is adjusted downward, and the stone removing effect is adjusted to the best by repeating several times, and the flow adjusting plate, the stone removing adjusting plate and the air volume adjusting plate are fixed;

[0017] Step 2, cleaning out large impurities: due to the reciprocating linear motion of the large impurity screen surface and the effect of air flow on the material, the material is automatically classified; the naked oats and light impurities float on the top of the material flow, becoming the over-screen material of the large impurity screen surface, the large impurities and the material are separated by vibration and climb upward to the large impurity outlet to be discharged outside the machine; the oat hulls and dust on the large impurity screen surface are sucked away by the air blower;

[0018] Step 3, cleaning out small impurities: the naked oats and small and medium impurities fall to the lower small impurity screen surface through the screen holes; the material entering the small impurity screen surface falls to the bottom plate through the screen holes under the action of vibration according to the size of the particles, and then is collected to the small impurity outlet to be discharged outside the machine; the naked oats and stone with large specific gravity material climb upward along the small impurity screen surface and fall to the classification screen surface;

[0019] Step 4, material classification: under the comprehensive action of the vibration of the vibrator and the air flow generated by the upper air blower, the material is automatically classified according to its own weight; at this time, the dense-phase oat material mixed with the stone gradually falls into the stone removing screen surface along the first section, the second section and the third section of the classification layer;

[0020] Step 5, cleaning out the tubers: when the material on the classification screen surface reaches the tail end, part of the naked oats is mixed with the tubers and the oat joints; when the material passes through the air duct formed between the tail end surface of the classification screen surface and the air duct adjusting plate, the clean naked oats material falls from the air duct and is discharged through the naked oat discharge pipe; the naked oat tubers are induced into the tuber settling chamber from the tuber outlet by the wind due to the influence of the outer clothing;

[0021] Step 6, clear out and shoulder stone: the material falling on the stone removal screen surface, due to the different densities of the material components and their aerodynamic properties, under the action of appropriate vibration and airflow parameters, the density of the small millet floats on the upper layer, and the density of the large shoulder stone sinks into the bottom layer and contacts the stone removal screen surface, forming an automatic classification phenomenon; due to the airflow passing through the material from bottom to top, the porosity between the materials is increased, the normal pressure and friction between the material layers are reduced; so that it is in a fluidized state, thereby promoting the formation of automatic classification; the upper layer material with small density slides down the lower layer material as a sliding surface under the action of gravity, inertia force, airflow and continuous feeding, and is discharged through the millet discharge pipe; during the sliding process of the upper layer material, the heavy shoulder stone and other impurities are gradually separated from the millet and enter the lower layer, and the shoulder stone and non-suspended millet in the lower layer slide up along the screen surface under the action of vibration and are discharged through the stone impurity outlet;

[0022] Step 7, turn off the machine: first, turn off the feeder, when the material completely flows out from the millet full-closed combined grain cleaning machine, turn off the vibrator, and when the millet full-closed combined grain cleaning machine is completely in a static state, turn off the air extractor.

[0023] The present application has the following advantages:

[0024] 1. The millet full-closed combined grain cleaning machine separates the millet and shoulder stone in opposite directions on the screen surface according to the different specific gravities and aerodynamic properties of the millet and shoulder stone, and utilizes the appropriate surface characteristics of the stone removal screen surface, the screen surface inclination angle, the frequency and amplitude of the vibrator and the airflow speed to cause the automatic classification of the material and promote the separation of the millet and shoulder stone. The large impurities, small impurities, nodules and shoulder stone are cleaned out through the steps of starting the machine, adjusting, cleaning out the large impurities, cleaning out the small impurities, material classification, cleaning out the nodules, cleaning out the shoulder stone and turning off the machine. The cleaning rate is high, the performance is good, the production efficiency is high, the energy consumption is low, there is no dust emission, the noise is small, and the operation, use and maintenance are convenient.

[0025] 2. The millet full-closed combined grain cleaning machine adopts a threaded connection air duct adjusting bolt at the rear end surface of the classification screen surface, the air duct adjusting bolt passes through the air duct adjusting plate, the upper end surface of the air duct adjusting plate corresponds to the upper surface of the classification screen surface, and the air duct is formed between the rear end surface of the classification screen surface and the air duct adjusting plate. The settling bottom plate is fixedly connected to the rear surface, the air duct adjusting plate is slidably connected to the settling bottom plate, and the settling bottom plate, the air duct adjusting plate and the rear surface form a nodule settling chamber. The nodule settling chamber is communicated with the nodule outlet. When the material reaches the tail end of the classification screen surface, part of the millet is mixed between the nodules and the wheat joints. When the material passes through the air duct formed between the rear end surface of the classification screen surface and the air duct adjusting plate, the clean millet material falls down through the millet discharge pipe. The millet and nodules are naturally induced into the nodule settling chamber through the nodule outlet by the wind. The cleaning rate is further improved.

[0026] 3. The structure of the uniform wind plate under the stone removing screen surface of the whole closed combined millet cleaning machine, the uniformly distributed screen holes on the uniform wind plate can make the wind more uniform and knead more, and the wind can fully penetrate the stone removing screen surface, which not only lifts up the light impurities but also achieves the best stone removing effect, further improving the cleaning rate. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the whole closed combined millet cleaning machine. Figure 1 Figure 1 is a structural schematic diagram of the whole closed combined millet cleaning machine.

[0028] Figure 2 is a front view of the whole closed combined millet cleaning machine. Figure 2 Figure 2 is a front view of the whole closed combined millet cleaning machine. Figure 1 Figure 3 is a right view of the whole closed combined millet cleaning machine.

[0029] Figure 4 is a left view of the whole closed combined millet cleaning machine. Figure 3 Figure 4 is a left view of the whole closed combined millet cleaning machine. Figure 1 Figure 5 is a structural schematic diagram of the grading screen surface of the whole closed combined millet cleaning machine.

[0030] Figure 5 is a structural schematic diagram of the grading screen surface of the whole closed combined millet cleaning machine. Figure 4 Figure 5 is a structural schematic diagram of the grading screen surface of the whole closed combined millet cleaning machine.

[0031] In the figure: 1 - frame, 1.1 - threshing machine frame, 1.2 - vertical rod, 1.3 - horizontal rod, 1.4 - front vibration spring lower support rod, 1.5 - front support column, 2 - vibration device, 2.1 - vibration shaft, 2.2 - rear vibration spring upper support, 2.3 - rear vibration spring, 2.4 - rear vibration spring lower support, 2.5 - front vibration spring, 2.6 - front vibration spring upper support rod, 2.7 - vibrator, 3 - screen box, 3.1 - front side, 3.2 - rear side, 3.3 - left side, 3.4 - right side, 3.5 - large impurity screen surface, 3.6 - small impurity screen surface, 3.7 - bottom plate, 3.8 - grading screen surface, 3.9 - stone removing screen surface, 3.10 - bottom surface, 3.11 - uniform wind plate, 3.12 - air duct, 3.13 - air duct adjusting bolt, 3.14 - air duct adjusting plate, 3.15 - potato settling chamber, 3.16 - potato outlet, 3.17 - stone removing adjusting plate, 3.18 - stone removing adjusting bolt, 3.19 - stone removing adjusting shaft, 3.20 - large impurity outlet, 3.21 - small impurity outlet, 3.22 - stone impurity outlet, 3.23 - millet discharge pipe, 3.24 - millet discharge pipe soft cloth tube, 3.25 - settling bottom plate, 4 - screen box cover, 4.1 - screen box cover inlet, 4.2 - screen box cover air outlet, 5 - inlet interface, 5.1 - material collecting tube, 5.2 - inlet, 5.3 - flow adjusting plate, 5.4 - inlet soft cloth tube, 6 - exhaust interface, 6.1 - exhaust tube, 6.2 - air volume adjusting plate, 6.3 - exhaust soft cloth tube, 7 - threshing machine, 7.1 - threshing shaft, 7.2 - threshing blade, 7.4 - threshing tube, 7.5 - threshing outlet, 7.6 - threshing screen tube, 7.7 - waste outlet, 7.8 - threshing inlet, 8 - motor, a - angle of threshing blade. DETAILED DESCRIPTION

[0032] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative efforts, fall within the protection scope of the present application.

[0033] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] As shown in the accompanying Figures 1-4As shown, the whole closed combined grain cleaning machine of the present embodiment includes a rack 1, a vibration device 2, a front side 3.1 with an upper opening, a rear side 3.2, a left side 3.3, a right side 3.4, a bottom 3.10 sealed sieve box 3 and sieve box cover 4. The rack 1 includes a threshing machine rack 1.1, a vertical rod 1.2 fixedly connected to the threshing machine rack 1.1, a cross rod 1.3, a front support column 1.5 fixedly connected to the end of the cross rod 1.3, and a front vibration spring lower support rod 1.4 arranged on the front support column 1.5. The left side 3.3 and the right side 3.4 of the sieve box 3 are detachably and fixedly connected from top to bottom with a large impurity screen surface 3.5, a small impurity screen surface 3.6, a bottom plate 3.7, a grading screen surface 3.8 and a stone removal screen surface 3.9. The bottom 3.10 is provided with a millet discharge pipe 3.23. The upper end surface of the sieve box 3 is fixedly connected with the sieve box cover 4. The sieve box cover 4 is connected with a feeding interface 5 and an air extraction interface 6. The feeding interface 5 and the air extraction interface 6 are connected with the vertical rod 1.2. The vibration device 2 includes a vibration shaft 2.1 fixedly connected to the rear end of the bottom of the left side 3.3 and the right side 3.4, a front vibration spring upper support rod 2.6 fixedly connected to the front end of the bottom 3.10, and a rear vibration spring lower support 2.4 arranged on the rack 1. The middle part of the vibration shaft 2.1 is fixedly connected with a vibrator 2.7. The two ends of the vibration shaft 2.1 are fixedly connected with a rear vibration spring upper support 2.2. The rear vibration spring upper support 2.2 is clamped with a rear vibration spring 2.3 between the rear vibration spring upper support 2.2 and the rear vibration spring lower support 2.4. The front vibration spring upper support rod 2.6 is clamped with a front vibration spring 2.5 between the front vibration spring upper support rod 2.6 and the front vibration spring lower support rod 1.4. The rear end surface of the grading screen surface 3.8 is threadedly connected with an air duct adjusting bolt 3.13. The air duct adjusting bolt 3.13 passes through an air duct adjusting plate 3.14. The upper end surface of the air duct adjusting plate 3.14 corresponds to the upper surface of the grading screen surface 3.8. An air duct 3.12 is formed between the rear end surface of the grading screen surface 3.8 and the air duct adjusting plate 3.4. A settling bottom plate 3.25 is fixedly connected to the rear side 3.2. The air duct adjusting plate 3.4 is slidingly connected with the settling bottom plate 3.25. A millet settling chamber 3.15 is formed between the settling bottom plate 3.25, the air duct adjusting plate 3.4 and the rear side 3.2. The millet settling chamber 3.15 is communicated with a millet outlet 3.16. The whole closed combined grain cleaning machine adopts a grading screen surface rear end surface threadedly connected with an air duct adjusting bolt. The air duct adjusting bolt passes through an air duct adjusting plate. The upper end surface of the air duct adjusting plate corresponds to the upper surface of the grading screen surface. An air duct is formed between the rear end surface of the grading screen surface and the air duct adjusting plate. A settling bottom plate is fixedly connected to the rear side. The air duct adjusting plate is slidingly connected with the settling bottom plate. A millet settling chamber is formed between the settling bottom plate, the air duct adjusting plate and the rear side. The millet settling chamber is communicated with a millet outlet. The structure design is that when the material on the grading screen surface reaches the tail end, part of the millet is mixed between the millet and the wheat joint. When the material passes through the air duct formed between the rear end surface of the grading screen surface and the air duct adjusting plate, the clean millet material is heavy and falls down from the air duct and is discharged through the millet discharge pipe. The millet and the millet are naturally induced into the millet settling chamber from the millet outlet by the wind. The cleaning rate is further improved.The large-screen surface 3.5 and the small-screen surface 3.6 are punched screens, the front end of the large-screen surface 3.5 is connected with the large-impurity outlet 3.20, the bottom plate 3.7 is a light plate, the front end of the bottom plate 3.7 is recessed to the front end of the small-screen surface 3.6 and the front end of the grading screen surface 3.8, the rear end of the bottom plate 3.7 is connected with the small-impurity outlet 3.21, the front part of the grading screen surface 3.8 is a small punched hole, the middle part is a long circular punched hole, and the rear part is a large punched hole, the stone-removing screen surface 3.9 is a steel wire woven screen, the front end of the stone-removing screen surface 3.9 is connected with the stone-impurity outlet 3.22, the air-distribution plate 3.11 is a punched plate, the left side surface 3.3 and the right side surface 3.4 between the front part of the grading screen surface 3.8 and the front part of the stone-removing screen surface 3.9 are rotatably connected with the stone-removing adjusting shaft 3.19, the stone-removing adjusting plate 3.17 is fixedly connected with the stone-removing adjusting shaft 3.19, the stone-removing adjusting plate 3.17 is L-shaped, and the stone-removing adjusting bolt 3.18 is threadedly connected with the stone-removing adjusting plate 3.17 through the front side surface 3.1. The whole-closed combined grain cleaning machine for the naked oats can automatically grade the materials according to the different specific gravities and air mechanics properties of the naked oats and the shoulder stones, and can separate the naked oats and the shoulder stones by using the appropriate surface characteristics, the screen surface inclination angle, the frequency and amplitude of the vibrator, and the air flow velocity. The large impurities, the small impurities, the tubers, and the shoulder stones are cleaned, the cleaning rate is high, the performance is good, the production efficiency is high, the energy consumption is low, no dust is discharged, the noise is small, and the operation, use and maintenance are convenient.

[0036] Preferably, the stone-removing screen surface 3.9 is provided below with the air-distribution plate 3.11.

[0037] Preferably, the feeding interface 5 comprises the material collecting cylinder 5.1 fixedly connected with the upper part of the vertical rod 1.2, the flow adjusting plate 5.3 is arranged at the lower end of the material collecting cylinder 5.1 and connected with the feeding port 4.1 of the screen box cover through the feeding soft cloth cylinder 5.4, the feeding port 5.2 is arranged at the upper end of the material collecting cylinder 5.1 and connected with the feeding machine.

[0038] Preferably, the air-extracting interface 6 comprises the air-extracting cylinder 6.1 fixedly connected with the upper part of the vertical rod 1.2, the air volume adjusting plate 6.2 is arranged on the air-extracting cylinder 6.1, the air-extracting cylinder 6.1 is connected with the air outlet 4.2 of the screen box cover through the air-extracting soft cloth cylinder 6.3, and the upper end of the air-extracting cylinder 6.1 is connected with the air-extracting machine.

[0039] Preferably, the large-screen surface 3.5, the small-screen surface 3.6, the bottom plate 3.7, the grading screen surface 3.8, and the stone-removing screen surface 3.9 are arranged in a manner that the front part is higher than the rear part, and the screen surface inclination angle with the horizontal direction is 5-9°.

[0040] Preferably, the front support column 1.5 and the lower support rod 1.4 of the front vibrating spring are adjustable.

[0041] Preferably, the frequency of the vibrator 2.7 is 15.4-16.6 S-1, and the amplitude is 4-5 mm.

[0042] The method for cleaning naked oats by using the naked oats full-closed combined cleaning machine, comprising the following steps:

[0043] Step 1, starting and adjusting: first start the air blower, then start the vibrator 2.7, slightly open the air volume adjusting plate 6.2, then start the feeder and open the flow adjusting plate 5.3; when the stone and impurity outlet 3.22 has the oat discharge, the air volume adjusting plate 6.2 can be adjusted to be larger, and vice versa; at this time, the stone removal effect is observed, if the stone and impurity outlet 3.22 has no stone discharge, the material is observed, when it is found that the rear end has stone accumulation, the rear end of the stone removal adjusting plate 3.17 is adjusted upward, when the oat is taken out, the rear end of the stone removal adjusting plate 3.17 is adjusted downward, and the stone removal effect is adjusted to the best, and the flow adjusting plate 5.3, the stone removal adjusting plate 3.17 and the air volume adjusting plate 6.2 are fixed;

[0044] Step 2, cleaning out large impurities: due to the reciprocating linear motion of the large impurity screen surface 3.5 and the effect of air flow on the material, the material is automatically classified; the naked oats and light impurities with small bulk density float on the top of the material flow, become the sieve material on the large impurity screen surface 3.5, and are separated from the material by vibration and climb upward to the large impurity outlet 3.20 to be discharged outside the machine; the oat shell and dust on the large impurity screen surface 3.5 are sucked away by the air blower;

[0045] Step 3, cleaning out small impurities: the naked oats and small and medium impurities fall to the lower small impurity screen surface 3.6 through the screen hole; the material entering the small impurity screen surface 3.6 falls to the bottom plate 3.7 through the screen hole under the action of vibration according to the size of the particles, and then is collected to the small impurity outlet 3.21 to be discharged outside the machine; the naked oats and stone with large bulk density material climb upward along the small impurity screen surface 3.6 and fall to the classification screen surface 3.8;

[0046] Step 4, material classification: under the comprehensive action of vibration of the vibrator 2.7 and air flow generated by the upper air blower, the material is automatically classified according to its own weight; at this time, the dense-phase oat material mixed with the stone gradually falls into the stone removal screen surface 3.9 along the first section, the second section and the third section of the classification layer;

[0047] Step 5, cleaning out the oat kernel: when the material on the classification screen surface 3.8 reaches the tail end, part of the naked oats is mixed with the oat kernel and the oat node; when the material passes through the air duct 3.12 formed between the tail end surface of the classification screen surface 3.8 and the air duct adjusting plate 3.4, the clean naked oat material falls down through the naked oat discharge pipe 3.23; the oat kernel is induced into the oat settling chamber through the air and is discharged from the oat outlet.

[0048] Step 6, clear out and shoulder stone: the material falling on the stone removal screen surface 3.9, due to the different densities of the material components and their aerodynamic characteristics, under the action of appropriate vibration and air flow parameters, the density of the millet is smaller and floats on the upper layer, and the density of the shoulder stone is larger and sinks into the bottom layer, and contacts with the stone removal screen surface, forming an automatic classification phenomenon; due to the air flow passing through the material from bottom to top, the porosity between the materials is increased, the normal pressure and friction between the layers are reduced; and the material is in a fluidized state, thereby promoting the formation of automatic classification; the upper layer material with smaller density slides downward relative to the stone removal screen surface under the action of gravity, inertia force, air flow and continuous feeding of the lower layer material as a sliding surface, and is discharged through the millet discharge pipe 3.23; in the process of sliding of the upper layer material, heavy shoulder stones and other impurities are gradually separated from the millet and enter the lower layer, and the shoulder stones and non-suspended millet in the lower layer slide upward along the screen surface under the action of vibration and are discharged through the stone and impurity outlet 3.22;

[0049] Step 7, turn off the machine: first, close the feeder, when the material completely flows out from the millet full-closed combined grain cleaner, turn off the vibrator 2.7, and when the millet full-closed combined grain cleaner is completely in a static state, turn off the air extractor.

[0050] After the start-up adjustment, the small impurity removal, the small impurity removal, the material classification, the millet removal, the shoulder stone removal and the machine shutdown steps, the millet is cleaned, and the cleaning rate is high.

[0051] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A complete closed combination grain cleaning machine for hulless barley, characterized in that: The invention relates to a full-closed combined grain cleaning machine for cleaning hulless barley, which comprises a rack, a vibrating device, a screen box with a front, a back, left and right side and a bottom, and a screen box cover, wherein the rack comprises a threshing machine rack, a vertical rod and a horizontal rod fixedly connected to the threshing machine rack, a front support column fixedly connected to the end of the horizontal rod, and a front vibrating spring lower support rod arranged on the front support column; the left and right sides of the screen box are detachably fixedly connected from top to bottom with a large impurity screen, a small impurity screen, a bottom plate, a grading screen and a stone removal screen; the bottom is provided with a hulless barley discharge pipe; the upper end of the screen box is fixedly connected with the screen box cover, and the screen box cover is connected with a feeding port and an air extraction port; the vibrating device comprises vibrating shafts fixedly connected to the bottom of the left and right sides, a front vibrating spring upper support rod fixedly connected to the front end of the bottom, and a rear vibrating spring lower support arranged on the rack; the middle of the vibrating shaft is fixedly connected with a vibrator; the two ends of the vibrating shaft are fixedly connected with a rear vibrating spring upper support; the rear vibrating spring is clamped between the rear vibrating spring upper support and the rear vibrating spring lower support; the front vibrating spring is clamped between the front vibrating spring upper support rod and the front vibrating spring lower support rod; the rear end of the grading screen is threadedly connected with an air duct adjusting bolt; the air duct adjusting bolt penetrates through an air duct adjusting plate; the upper end of the air duct adjusting plate corresponds to the upper surface of the grading screen; an air duct is formed between the rear end of the grading screen and the air duct adjusting plate; a settling bottom plate is fixedly connected to the back; the air duct adjusting plate and the settling bottom plate are slidably connected; a potato settling chamber is formed between the settling bottom plate, the air duct adjusting plate and the back; the potato settling chamber is connected with a potato outlet; the large impurity screen and the small impurity screen are punched screens; the front end of the large impurity screen is connected with a large impurity outlet; the bottom plate is a light plate; the front end of the bottom plate is recessed from the front ends of the small impurity screen and the grading screen; the rear end of the bottom plate is connected with a small impurity outlet; the front part of the grading screen is a small punched hole; the middle part is a long circular punched hole; the rear part is a large punched hole; the stone removal screen is a steel wire woven screen; the front end of the stone removal screen is connected with a stone impurity outlet; the air uniformizing plate is a punched plate; the left and right sides between the front part of the stone removal screen and the grading screen are rotatably connected with a stone removal adjusting shaft; the stone removal adjusting shaft is fixedly connected with a stone removal adjusting plate; the stone removal adjusting plate is L-shaped; a stone removal adjusting bolt is threadedly connected with the front side and the stone removal adjusting plate.

2. The combined closed oat cleaning and separating machine according to claim 1, characterized in that: A wind uniformizing plate is arranged below the stone removal screen.

3. The combined closed oat cleaning and separating machine according to claim 1, characterized in that: The feeding port comprises a material collecting cylinder fixedly connected to the upper part of the vertical rod; the lower end of the material collecting cylinder is provided with a flow adjusting plate and connected with the feeding port of the screen box cover through a feeding soft cloth tube; the upper end of the material collecting cylinder is provided with a feeding port connected with a feeder.

4. The wheat combine harvester as claimed in claim 1, wherein: The air extraction port comprises an air extraction cylinder fixedly connected to the upper part of the vertical rod; the air extraction cylinder is provided with a wind volume adjusting plate; the lower end of the air extraction cylinder is connected with the air outlet of the screen box cover through an air extraction soft cloth tube; the upper end of the air extraction cylinder is connected with an air extractor.

5. The wheat combine harvester as claimed in claim 1, wherein: The large impurity screen, the small impurity screen, the bottom plate, the grading screen and the stone removal screen are arranged in a manner that the front is higher than the rear; the inclination angle of the screens with respect to the horizontal direction is 5-9 degrees.

6. The combined closed oat cleaning and separating machine according to claim 1, characterized in that: The front support column and the front vibrating spring lower support rod are adjustable.

7. The combined wheat complete closed cleaning machine according to claim 1, characterized in that: The frequency of the shaker is 15.4-16.6 S -1 , and the amplitude is 4-5 mm.

8. A method for cleaning hulless barley by using the full-closed combined grain cleaning machine according to any one of claims 1-7, which comprises the following steps: Step 1, start-up adjustment: first start the air extractor, then start the vibrator, slightly open the air volume adjustment plate, then start the feeder, open the flow adjustment plate; when the stone and impurity outlet has wheat, the air volume adjustment plate can be adjusted to be larger, and vice versa; at this time, observe the stone removal effect; if there is no stone in the stone and impurity outlet, observe whether the material is normal; when it is found that there is a stone accumulation at the rear end, adjust the rear end of the stone removal adjustment plate upward; when the wheat is taken out, adjust the rear end of the stone removal adjustment plate downward; repeat several times to adjust the stone removal effect to the best, and fix the opening flow adjustment plate, stone removal adjustment plate and air volume adjustment plate; Step 2, remove large impurities: due to the reciprocating linear motion of the large impurity screen surface and the effect of air flow on the material, the material is automatically classified; the material with small bulk density and light impurities float on the top of the material flow, becoming the screen material on the large impurity screen surface, and the large impurities are separated from the material by vibration and climb upward to the large impurity outlet to be discharged outside the machine; the wheat shell and dust on the large impurity screen surface are sucked away by the air extractor; Step 3, remove small impurities: the millet and small and medium impurities fall onto the lower small impurity screen surface through the screen hole; the material entering the small impurity screen surface, according to the size of the particles, under the action of vibration, the small impurities and part of the shriveled wheat fall to the bottom plate through the screen hole and then are collected to the small impurity outlet to be discharged outside the machine; the material with large bulk density, such as millet and shoulder stone, climbs upward along the small impurity screen surface and falls to the classification screen surface; Step 4, material classification: under the combined action of vibration of the vibrator and air flow generated by the upper air extractor, the material on the classification screen surface is automatically classified according to its own weight; at this time, the dense-phase wheat material mixed with shoulder stone gradually falls into the lower stone removal screen surface along the first, second and third sections of the classification layer; Step 5, remove chaff: when the material on the classification screen surface reaches the tail end, part of the millet is mixed with chaff and wheat nodes; when the material passes through the air duct formed between the rear end surface of the classification screen surface and the air duct adjustment plate, the clean millet material falls from the air duct and is discharged through the millet discharge pipe; the millet chaff is naturally induced into the chaff settling chamber through the chaff outlet due to the influence of the outer clothing, and is discharged through the chaff outlet; Step 6, remove shoulder stone: the material falling onto the stone removal screen surface, due to the difference in density and aerodynamic characteristics of each component of the material, under the action of appropriate vibration and air flow parameters, the millet with smaller density floats on the upper layer, and the shoulder stone with larger density sinks into the bottom layer and contacts with the stone removal screen surface, forming an automatic classification phenomenon; due to the air flow passing through the material from bottom to top, the air gap between the materials increases, reducing the normal pressure and friction between the material layers; so that it is in a fluidized state, thereby promoting the formation of automatic classification; the upper layer material with smaller density slides downward relative to the stone removal screen surface under the action of gravity, inertia force, air flow and continuous feeding, and is discharged through the millet discharge pipe; in the process of sliding of the upper layer material, the heavy shoulder stone and other impurities gradually separate from the millet and enter the lower layer; under the action of vibration, the shoulder stone and un-suspended millet in the lower layer slide upward along the screen surface and are discharged through the stone and impurity outlet; Step 7, shutdown: first close the feeder, when the material from the hulless barley closed combination grain cleaning machine completely out, close the vibrator, when the hulless barley closed combination grain cleaning machine is completely in the static state, close the exhaust fan.

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