CN112024364A - An automatic discharge screening device for automatic crop sorting by size - Google Patents

An automatic discharge screening device for automatic crop sorting by size Download PDF

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Publication number
CN112024364A
CN112024364A CN202010804806.1A CN202010804806A CN112024364A CN 112024364 A CN112024364 A CN 112024364A CN 202010804806 A CN202010804806 A CN 202010804806A CN 112024364 A CN112024364 A CN 112024364A
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screening device
plate
main body
sizing
automatic
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CN112024364B (en
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杨超
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Shandong Xiangdaren Food Co ltd
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Haining Xinding Trading Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4663—Multi-layer screening surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens

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  • Combined Means For Separation Of Solids (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

Abstract

The invention relates to the technical field of screening equipment, in particular to an automatic discharging and screening device for automatically distinguishing crops according to sizes, which comprises an equipment main body, wherein a feeding pipe is inserted into the inner part of the upper surface of the equipment main body, a filter box is fixedly connected to the left side surface of the equipment main body, a material collecting frame is fixedly connected to the inner part of the equipment main body, a moving push plate is slidably connected to the inner part of the material collecting frame, the front surface of the moving push plate is movably connected with a crank connecting rod I through a shaft, soybeans are screened through a screen frame, the lower screen frame screens soybeans in small sizes, full and large soybeans are left, the screened dry and shriveled soybeans drive the moving push plate to push the soybeans out through the reciprocating motion of the crank connecting rod I, so that the automatic recycling and discharging are realized, the waste is avoided, the soybeans can be well recycled, the quality of the soybeans is, the air flow rate inside the filter box on the left side of the suction fan is accelerated, the pressure is reduced, and the cleaning is convenient.

Description

一种自动化农作物按大小区分的自动出料筛选装置An automatic discharge screening device for automatic crop sorting by size

技术领域technical field

本发明涉及筛选设备技术领域，具体为一种自动化农作物按大小区分的自动出料筛选装置。The invention relates to the technical field of screening equipment, in particular to an automatic discharge screening device for automatic crop sorting by size.

背景技术Background technique

生活中，我们每天都必须要吃食物，食物的来源于农作物，黄豆学名大豆，大豆是中国重要粮食作物之一，已有五千年栽培历史，古称菽，中国东北为主产区，是一种其种子含有丰富植物蛋白质的作物。大豆最常用来做各种豆制品、榨取豆油、酿造酱油和提取蛋白质，对我们的生活起到至关重要的作用。In life, we must eat food every day. Food comes from crops. Soybean is scientifically called soybean. Soybean is one of the important food crops in China. It has a cultivation history of 5,000 years. Plant crops whose seeds are rich in plant protein. Soybeans are most commonly used to make various soy products, extract soybean oil, brew soy sauce and extract protein, and play a vital role in our lives.

但是，现有的筛选设备不能很好的对大豆中的杂质进行区分，大豆壳和小麦混合在一起，还有就是干瘪的大豆也混合在一起，从而影响对大豆进行筛选，此外，筛选的干瘪大豆不能很好的进行回收，从而造成浪费。因此，本领域技术人员提供了一种自动化农作物按大小区分的自动出料筛选装置，以解决上述背景技术中提出的问题。However, the existing screening equipment cannot distinguish the impurities in soybeans very well. The soybean hulls and wheat are mixed together, and the shriveled soybeans are also mixed together, which affects the screening of soybeans. Soybeans cannot be recycled well, resulting in waste. Therefore, those skilled in the art provide an automatic sorting device for automatic crop sorting by size to solve the problems raised in the above-mentioned background art.

发明内容SUMMARY OF THE INVENTION

为了解决上述技术问题，本发明提供一种自动化农作物按大小区分的自动出料筛选装置，由以下具体技术手段所达成：In order to solve the above-mentioned technical problems, the present invention provides an automatic discharge screening device for automatic crop classification by size, which is achieved by the following specific technical means:

一种自动化农作物按大小区分的自动出料筛选装置，包括设备主体，所述设备主体的上表面内部插接有进料管，所述设备主体的左侧面固定连接有过滤箱，所述设备主体的内部固定连接有收料架，所述收料架的内部滑动连接有移动推板，所述移动推板的前表面通过轴活动连接有曲柄连杆一，所述曲柄连杆一的下端前表面通过轴活动连接有驱动轮，所述驱动轮的前表面通过轴活动连接有曲柄连杆二，所述曲柄连杆二的右端后表面通过轴活动连接有移动板，所述设备主体的内部位于移动板的外部固定连接有定位板，所述移动板的前表面上端固定连接有支撑杆，所述支撑杆的上表面固定连接有筛网架，所述驱动轮的后表面外部套接有皮带，所述皮带的上端内部插接有从动轮，所述定位板的内部固定连接有限位板，所述限位板的右侧面固定连接有复位弹簧，所述限位板的内部插接有挤压板，所述定位板的内部位于挤压板的右侧固定连接有气囊，所述从动轮的上表面啮合有蜗杆，所述蜗杆的左端上表面啮合有齿轮组，所述齿轮组的前表面啮合有齿轮一，所述齿轮一的右侧面固定连接有吸风扇。An automatic discharging and screening device for automatic crop sorting by size, comprising an equipment main body, a feeding pipe is inserted inside the upper surface of the equipment main body, a filter box is fixedly connected to the left side of the equipment main body, and the equipment The inside of the main body is fixedly connected with a receiving rack, the inside of the receiving rack is slidably connected with a moving push plate, the front surface of the moving push plate is movably connected with a crank connecting rod 1, and the lower end of the crank connecting rod 1 is movably connected The front surface is movably connected with the driving wheel through the shaft, the front surface of the driving wheel is movably connected with the second crank connecting rod through the shaft, and the rear surface of the right end of the second crank connecting rod is movably connected with the moving plate through the shaft. A positioning plate is fixedly connected to the outside of the moving plate, the upper end of the front surface of the moving plate is fixedly connected with a support rod, the upper surface of the support rod is fixedly connected with a screen frame, and the rear surface of the driving wheel is externally sleeved There is a belt, a driven wheel is inserted inside the upper end of the belt, a limit plate is fixedly connected to the inside of the positioning plate, a return spring is fixedly connected to the right side of the limit plate, and the inside of the limit plate is inserted. A squeeze plate is connected, the interior of the positioning plate is located on the right side of the squeeze plate, and an air bag is fixedly connected, the upper surface of the driven wheel is engaged with a worm, and the upper surface of the left end of the worm is engaged with a gear group, the gear A gear one is engaged with the front surface of the group, and a suction fan is fixedly connected to the right side of the gear one.

作为优化，所述设备主体的左右两侧面上端开设有与过滤箱相互匹配的孔，且设备主体的左右两侧面下端开设有与收料架相互匹配的孔。As an optimization, the upper ends of the left and right sides of the equipment body are provided with holes that match the filter box, and the lower ends of the left and right sides of the equipment body are provided with holes that match the receiving racks.

作为优化，所述收料架的内部开设有与移动推板相互匹配的槽。As an optimization, the inside of the receiving rack is provided with a groove matching with the moving push plate.

作为优化，所述移动板位于挤压板的左侧。As an optimization, the moving plate is located on the left side of the pressing plate.

作为优化，所述筛网架位于进料管的正下方。As an optimization, the screen frame is located directly below the feed pipe.

作为优化，所述复位弹簧的右端位于挤压板的左侧面上，且复位弹簧以挤压板的中心线呈对称分布。As an optimization, the right end of the return spring is located on the left side of the pressing plate, and the returning springs are symmetrically distributed with the center line of the pressing plate.

作为优化，所述吸风扇以设备主体的中心线呈对称分布。As an optimization, the suction fans are symmetrically distributed with the centerline of the device body.

本发明具备以下有益效果：The present invention has the following beneficial effects:

1、该自动化农作物按大小区分的自动出料筛选装置，通过筛网架对大豆进行筛选，上层筛网架将大豆晃动筛选到下层，下层接着筛选，同时上层将大的壳筛选留下，下层筛网架对黄豆的大小进行细致的筛选，从而干瘪的大豆筛选剔除，留下饱满个大的大豆，筛选后的干瘪大豆通过曲柄连杆一的往复运动带动移动推板将大豆推出，从而实现自动回收出料，避免浪费，可以很好的回收再利用，从而保证大豆的品质。1. The automatic discharge screening device for the automatic crop sorting according to the size, screen the soybeans through the screen frame, the upper screen frame shakes the soybeans to the lower layer, the lower layer is then screened, and at the same time, the upper layer screens the large shells and leaves the lower layer. The size of the soybeans is carefully screened by the screen frame, so that the dried soybeans are screened and eliminated, and the plump and large soybeans are left. Automatically recycle and discharge materials, avoid waste, and can be recycled and reused well, thereby ensuring the quality of soybeans.

2、该自动化农作物按大小区分的自动出料筛选装置，通过吸风扇的转动吸收排出，由于吸风扇转动，使吸风扇左侧过滤箱内部的空气流速加快，压强变小，从而使杂质手里向过滤箱内部移动，通过气囊对残留的颗粒杂质、灰尘进行吹起，方便清理。2. The automatic discharge and screening device for the automatic crops according to the size is absorbed and discharged through the rotation of the suction fan. Due to the rotation of the suction fan, the air flow rate inside the filter box on the left side of the suction fan is accelerated, and the pressure is reduced, so that the impurities are in the hand. Move to the inside of the filter box, and blow up the residual particulate impurities and dust through the air bag, which is convenient for cleaning.

附图说明Description of drawings

图1为本发明设备主体主视剖面结构示意图。FIG. 1 is a schematic diagram of the front cross-sectional structure of the main body of the device of the present invention.

图2为本发明曲柄连杆二结构示意图。FIG. 2 is a schematic diagram of the second structure of the crank connecting rod according to the present invention.

图3为本发明从动轮后视图。Figure 3 is a rear view of the driven wheel of the present invention.

图4为本发明挤压板结构示意图。Figure 4 is a schematic view of the structure of the extrusion plate of the present invention.

图5为本发明吸风扇结构示意图。FIG. 5 is a schematic diagram of the structure of the suction fan of the present invention.

图中：1、设备主体；2、进料管；3、过滤箱；4、收料架；5、移动推板；6、曲柄连杆一；7、定位板；8、驱动轮；9、曲柄连杆二；10、移动板；11、支撑杆；12、筛网架；13、皮带；14、从动轮；15、限位板；16、复位弹簧；17、挤压板；18、气囊；19、蜗杆；20、齿轮组；21、齿轮一；22、吸风扇。In the figure: 1. Main body of the equipment; 2. Feeding pipe; 3. Filter box; 4. Receiving rack; 5. Moving push plate; 6. Crank connecting rod 1; 7. Positioning plate; 8. Driving wheel; 9. Crank connecting rod two; 10, moving plate; 11, support rod; 12, screen frame; 13, belt; 14, driven wheel; 15, limit plate; 16, return spring; 17, squeeze plate; 18, air bag ; 19, worm; 20, gear set; 21, gear one; 22, suction fan.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

请参阅图1-5，一种自动化农作物按大小区分的自动出料筛选装置，包括设备主体1，设备主体1的上表面内部插接有进料管2，设备主体1的左侧面固定连接有过滤箱3，设备主体1的内部固定连接有收料架4，收料架4的内部开设有与移动推板5相互匹配的槽，设备主体1的左右两侧面上端开设有与过滤箱3相互匹配的孔，且设备主体1的左右两侧面下端开设有与收料架4相互匹配的孔，收料架4的内部滑动连接有移动推板5，移动推板5的前表面通过轴活动连接有曲柄连杆一6，曲柄连杆一6的下端前表面通过轴活动连接有驱动轮8，驱动轮8的前表面通过轴活动连接有曲柄连杆二9，曲柄连杆二9的右端后表面通过轴活动连接有移动板10。Please refer to Figure 1-5, an automatic sorting device for automatic crop sorting by size, including an equipment main body 1, a feeding pipe 2 is inserted into the upper surface of the equipment main body 1, and the left side of the equipment main body 1 is fixedly connected There is a filter box 3, the inside of the equipment main body 1 is fixedly connected with a receiving rack 4, the inside of the receiving rack 4 is provided with a groove that matches with the moving push plate 5, and the upper ends of the left and right sides of the equipment main body 1 are provided with a filter box 3. Holes that match each other, and the lower ends of the left and right sides of the equipment body 1 are provided with holes that match with the receiving rack 4. The interior of the receiving rack 4 is slidably connected with a moving push plate 5, and the front surface of the moving push plate 5 is movable through the shaft. A crank connecting rod one 6 is connected, the front surface of the lower end of the crank connecting rod one 6 is movably connected with a driving wheel 8 through the shaft, and the front surface of the driving wheel 8 is movably connected with a crank connecting rod two 9 through the shaft, and the right end of the crank connecting rod two 9 is connected The rear surface is movably connected with a moving plate 10 through a shaft.

移动板10位于挤压板17的左侧，设备主体1的内部位于移动板10的外部固定连接有定位板7，移动板10的前表面上端固定连接有支撑杆11，支撑杆11的上表面固定连接有筛网架12，筛网架12位于进料管2的正下方，驱动轮8的后表面外部套接有皮带13，皮带13的上端内部插接有从动轮14，定位板7的内部固定连接有限位板15，限位板15的右侧面固定连接有复位弹簧16，通过筛网架12对大豆进行筛选，上层筛网架12将大豆晃动筛选到下层，下层接着筛选，同时上层将大的壳筛选留下，下层筛网架12对黄豆的大小进行细致的筛选，从而干瘪的大豆筛选剔除，留下饱满个大的大豆，筛选后的干瘪大豆通过曲柄连杆一6的往复运动带动移动推板5将大豆推出，从而实现自动回收出料，避免浪费，可以很好的回收再利用，从而保证大豆的品质。The moving plate 10 is located on the left side of the pressing plate 17 , the inside of the device body 1 is located outside the moving plate 10 , a positioning plate 7 is fixedly connected, a support rod 11 is fixedly connected to the upper end of the front surface of the moving plate 10 , and the upper surface of the support rod 11 is fixedly connected. A screen frame 12 is fixedly connected, the screen frame 12 is located directly below the feed pipe 2, a belt 13 is sleeved on the rear surface of the driving wheel 8, and a driven wheel 14 is inserted inside the upper end of the belt 13. The limit plate 15 is fixedly connected internally, and a return spring 16 is fixedly connected to the right side of the limit plate 15. The soybeans are screened through the screen frame 12, and the upper screen frame 12 shakes the soybeans to the lower layer, and the lower layer is then screened. The upper layer screens the large shells, and the lower screen frame 12 carefully screens the size of soybeans, so that the shriveled soybeans are screened and eliminated, and the plump and large soybeans are left. The reciprocating motion drives the moving push plate 5 to push out the soybeans, so as to realize automatic recycling and discharging, avoid waste, and can be recycled and reused well, thereby ensuring the quality of soybeans.

复位弹簧16的右端位于挤压板17的左侧面上，且复位弹簧16以挤压板17的中心线呈对称分布，限位板15的内部插接有挤压板17，定位板7的内部位于挤压板17的右侧固定连接有气囊18，从动轮14的上表面啮合有蜗杆19，蜗杆19的左端上表面啮合有齿轮组20，齿轮组20的前表面啮合有齿轮一21，齿轮一21的右侧面固定连接有吸风扇22，吸风扇22以设备主体1的中心线呈对称分布，通过吸风扇22的转动吸收排出，由于吸风扇22转动，使吸风扇22左侧过滤箱3内部的空气流速加快，压强变小，从而使杂质手里向过滤箱3内部移动，通过气囊18对残留的颗粒杂质、灰尘进行吹起，方便清理。The right end of the return spring 16 is located on the left side of the pressing plate 17 , and the return springs 16 are symmetrically distributed with the center line of the pressing plate 17 . The airbag 18 is fixedly connected to the right side of the pressing plate 17, the upper surface of the driven wheel 14 is meshed with a worm 19, the upper surface of the left end of the worm 19 is meshed with a gear set 20, and the front surface of the gear set 20 is meshed with a gear 21, A suction fan 22 is fixedly connected to the right side of the gear one 21. The suction fan 22 is symmetrically distributed with the center line of the main body 1 of the equipment. The air velocity inside the box 3 is accelerated, and the pressure becomes smaller, so that the hand of impurities moves to the inside of the filter box 3, and the remaining particulate impurities and dust are blown up by the air bag 18, which is convenient for cleaning.

在使用时，将混合的大豆从进料管2倒入到设备主体1的内部，接着通过打开外部的驱动源带动驱动轮8进行转动动，从而使驱动轮8通过皮带13带动从动轮14进行转动，在驱动轮8转动的同时，使驱动轮8前表面上的曲柄连杆二9带动移动板10在定位板7的内部做往复运动，同时使移动板10前表面上的支撑杆11带动筛网架12在设备主体1的内部左右晃动，通过皮带13的传动，从而使连接从动轮14上的筛网架12也跟着晃动，晃动的频率相同，从而通过筛网架12对大豆进行筛选，上层筛网架12将大豆晃动筛选到下层，下层接着筛选，同时上层将大的壳筛选留下，下层筛网架12对黄豆的大小进行细致的筛选，从而干瘪的大豆筛选剔除，留下饱满个大的大豆，筛选后的干瘪大豆通过曲柄连杆一6的往复运动带动移动推板5将大豆推出，从而实现自动回收出料，避免浪费，可以很好的回收再利用，同时通过移动板10的往复运动推动挤压板17向右侧移动，从而使挤压板17挤压气囊18，通过气囊18对残留的颗粒杂质、灰尘进行吹起，方便清理，通过从动轮14带动蜗杆19转动，从而通过齿轮之间的传动使齿轮组20和齿轮一21跟着转动，从而使吸风扇22进行转动，通过气囊18吹起的颗粒杂质、灰尘，通过吸风扇22的转动吸收排出，由于吸风扇22转动，使吸风扇22左侧过滤箱3内部的空气流速加快，压强变小，从而使杂质手里向过滤箱3内部移动，通过过滤箱3内部的过滤排出，从而保证大豆的品质。When in use, the mixed soybeans are poured into the main body 1 of the equipment from the feeding pipe 2, and then the driving wheel 8 is driven to rotate by turning on the external driving source, so that the driving wheel 8 drives the driven wheel 14 through the belt 13 to rotate. When the driving wheel 8 rotates, the crank connecting rod 2 9 on the front surface of the driving wheel 8 drives the moving plate 10 to reciprocate inside the positioning plate 7, and at the same time, the support rod 11 on the front surface of the moving plate 10 drives the moving plate 10. The screen frame 12 shakes left and right inside the main body 1 of the equipment, and through the transmission of the belt 13, the screen frame 12 connected to the driven wheel 14 is also shaken with the same frequency, so that soybeans are screened through the screen frame 12. , the upper screen frame 12 shakes the soybeans to the lower layer, the lower layer is then screened, and the upper layer screens and leaves the large shells, and the lower screen frame 12 carefully screens the size of the soybeans, so that the dried soybeans are screened and eliminated, leaving Plump and large soybeans, the shriveled soybeans after screening are driven by the reciprocating motion of the crank connecting rod-6 to drive the moving push plate 5 to push the soybeans out, so as to realize automatic recycling and discharging, avoid waste, and can be recycled and reused well. At the same time, by moving The reciprocating motion of the plate 10 pushes the pressing plate 17 to move to the right, so that the pressing plate 17 squeezes the air bag 18, and the air bag 18 blows up the remaining particulate impurities and dust, which is convenient for cleaning, and drives the worm 19 through the driven wheel 14. Rotation, so that the gear group 20 and the gear one 21 are rotated by the transmission between the gears, so that the suction fan 22 is rotated, and the particulate impurities and dust blown by the air bag 18 are absorbed and discharged through the rotation of the suction fan 22. The rotation of the fan 22 accelerates the air velocity inside the filter box 3 on the left side of the suction fan 22 and reduces the pressure, so that the impurities move into the filter box 3 by hand and are discharged through the filtering inside the filter box 3, thereby ensuring the quality of soybeans.

尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides an automatic change automatic discharging sieving mechanism that crops differentiate according to size, includes equipment main part (1), its characterized in that: the feeding device comprises an equipment main body (1), a feeding pipe (2) is inserted into the inner part of the upper surface of the equipment main body (1), a filter box (3) is fixedly connected to the left side surface of the equipment main body (1), a material receiving frame (4) is fixedly connected to the inner part of the equipment main body (1), a movable push plate (5) is connected to the inner part of the material receiving frame (4) in a sliding manner, a crank connecting rod I (6) is movably connected to the front surface of the movable push plate (5) through a shaft, a driving wheel (8) is movably connected to the front surface of the lower end of the crank connecting rod I (6) through a shaft, a crank connecting rod II (9) is movably connected to the front surface of the driving wheel (8) through a shaft, a movable plate (10) is movably connected to the rear surface of the right end of the crank connecting rod II (9) through a shaft, a positioning plate (7), the upper surface of the supporting rod (11) is fixedly connected with a screen frame (12), the outer part of the rear surface of the driving wheel (8) is sleeved with a belt (13), a driven wheel (14) is inserted into the upper end of the belt (13), a limiting plate (15) is fixedly connected inside the positioning plate (7), the right side surface of the limit plate (15) is fixedly connected with a return spring (16), the interior of the limit plate (15) is inserted with a squeezing plate (17), an air bag (18) is fixedly connected with the inner part of the positioning plate (7) on the right side of the extrusion plate (17), the upper surface of the driven wheel (14) is meshed with a worm (19), the upper surface of the left end of the worm (19) is meshed with a gear set (20), the front surface meshing of gear train (20) has gear (21), the right flank fixedly connected with suction fan (22) of gear (21).
2. The automatic crop sizing and discharging screening device according to claim 1, wherein the automatic crop sizing and discharging screening device comprises: the upper ends of the left side surface and the right side surface of the equipment main body (1) are provided with holes matched with the filter box (3), and the lower ends of the left side surface and the right side surface of the equipment main body (1) are provided with holes matched with the material receiving frame (4).
3. The automatic crop sizing and discharging screening device according to claim 1, wherein the automatic crop sizing and discharging screening device comprises: the inside of the material receiving frame (4) is provided with a groove matched with the movable push plate (5).
4. The automatic crop sizing and discharging screening device according to claim 1, wherein the automatic crop sizing and discharging screening device comprises: the moving plate (10) is positioned on the left side of the extrusion plate (17).
5. The automatic crop sizing and discharging screening device according to claim 1, wherein the automatic crop sizing and discharging screening device comprises: the screen frame (12) is positioned under the feeding pipe (2).
6. The automatic crop sizing and discharging screening device according to claim 1, wherein the automatic crop sizing and discharging screening device comprises: the right end of the return spring (16) is positioned on the left side surface of the extrusion plate (17), and the return spring (16) is symmetrically distributed by the central line of the extrusion plate (17).
7. The automatic crop sizing and discharging screening device according to claim 1, wherein the automatic crop sizing and discharging screening device comprises: the suction fans (22) are symmetrically distributed along the central line of the equipment main body (1).
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