阅读说明：本技术 一种核桃自动分选系统及控制方法 (Automatic walnut sorting system and control method ) 是由 宋乐鹏 李旭超 陈勇康 黄金盆 梁显雯 刘遥 石胜兵 雷笪 胡文金 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种核桃自动分选系统及控制方法,系统包括上料漏斗、三级筛选滤网,三级筛选滤网的孔径按照由小到大依次设置,每一级筛选滤网的下方均设置有一个接料漏斗,每一个接料漏斗的下方均设置有第一重量采集器,该第一重量采集器输出端经过第一传送带传送至第二重量采集器,第二重量采集器的输出端经过第二传送带传送至分类器,分类器根据第一重量采集器和所述第二重量采集器采集到的重量平均值与对应一级孔径筛选滤网筛选出的核桃的预设重量对比判断是否属于合格产品。其效果是：减少了人工成本,自动化程度高,提高了分选效率；通过三级筛选滤网和双重重量采集,进一步增加了分选的准确率。(The invention discloses an automatic walnut sorting system and a control method, wherein the system comprises a feeding funnel and three-level screening filter screens, the apertures of the three-level screening filter screens are sequentially arranged from small to large, a material receiving funnel is arranged below each level of screening filter screen, a first weight collector is arranged below each material receiving funnel, the output end of each first weight collector is transmitted to a second weight collector through a first conveyor belt, the output end of each second weight collector is transmitted to a classifier through a second conveyor belt, and the classifier judges whether the walnut belongs to a qualified product or not according to the comparison of the weight average value acquired by the first weight collector and the second weight collector and the preset weight of the walnut screened by the corresponding one-level aperture screening filter screen. The effect is as follows: the labor cost is reduced, the automation degree is high, and the sorting efficiency is improved; through tertiary screening filter screen and dual weight collection, further increased the rate of accuracy of sorting.)

1. An automatic walnut sorting system is characterized by comprising a feeding funnel, wherein a downward-inclined three-stage screening filter screen is arranged below the feeding funnel, the apertures of the three-stage screening filter screens are arranged from small to large in sequence, a material receiving funnel is arranged below each stage of screening filter screen, a first weight collector is arranged below each material receiving funnel, the output end of the first weight collector is transmitted to a second weight collector through a first conveyor belt, the output end of the second weight collector is transmitted to a classifier through a second conveyor belt, one end of the classifier is provided with a qualified product receiving box, the other end is an unqualified product receiving box, and the classifier judges whether the walnut belongs to a qualified product or not according to the comparison of the weight average value acquired by the first weight collector and the second weight collector and the preset weight of the walnut screened by the corresponding primary aperture screening filter screen.

2. The automatic walnut sorting system according to claim 1, wherein the first weight collector comprises a first tray and a second tray, the first tray is fixedly arranged on the mounting seat, a feeding hole is formed in the first tray, the second tray is arranged close to the first tray, is opposite to the first tray and horizontally rotates under the driving of a first driving motor, at least one walnut containing hole is formed in the second tray, a first gravity sensor is further arranged on the first tray, and after a walnut is picked up from the material receiving funnel through the walnut containing hole of the second tray, the walnut rotates along the first tray under the driving of the driving motor and enters the first conveyor belt through the feeding hole after passing through the first gravity sensor.

3. The automatic walnut sorting system according to claim 2, wherein the discharge hole of the first tray and the walnut accommodating hole of the second tray are circular holes with the same diameter, and the discharge hole and the walnut accommodating hole can be vertically overlapped with each other along with the rotation of the second tray.

4. The automatic walnut sorting system according to claim 2 or 3, wherein the second tray is provided with 4 walnut accommodating holes which are uniformly distributed along the circumference.

5. The automatic walnut sorting system according to claim 1, wherein the sorter comprises a splitter plate, a rotating shaft is arranged in the middle of the splitter plate, and the rotating shaft is connected to an output shaft of the second driving motor.

6. The automatic walnut sorting system according to claim 2 or 3, wherein a rotation speed sensor for detecting the rotation speed of the second tray is arranged on the first weight collector.

7. The automatic walnut sorting system according to claim 1, wherein the aperture of the walnut accommodating hole is matched with the size of a walnut, a feeding pipe is correspondingly arranged between the receiving hopper and the disc surface of the second tray, a pipe orifice at the lower end of the feeding pipe is attached to the disc surface of the second tray, and the pipe diameter of the feeding pipe is matched with the aperture of the walnut accommodating hole.

8. The automatic walnut sorting system of claim 1 wherein the second weight collector includes a weighing tray for parking individual walnuts, a second weight sensor being disposed below the weighing tray.

9. The control method of the automatic walnut sorting system according to any one of claims 2 to 8, comprising the following steps:

s1: placing the walnuts with sorting into the feeding funnel, enabling walnuts to be screened to slide down along the three-stage screening filter screen uniformly by controlling a material control switch of the feeding funnel, and screening walnuts with different sizes to enter corresponding material receiving funnels;

s2: controlling a second tray in a first weight collector below each material receiving funnel to rotate at a constant speed, so that walnuts in the material receiving funnels sequentially enter walnut accommodating holes in the second tray;

s3: the walnut passes through the first gravity sensor along with the rotation of the second tray to obtain a first weight;

s4: the walnuts in the second tray fall into the first conveyor belt from the blanking hole;

s5: the first conveyor belt conveys the walnuts into the second weight collector to obtain a second weight;

s6: pushing the walnuts on the second weight collector onto a second conveyor belt through the next walnut;

s7: the classifier judges whether the walnut belongs to a qualified product or not according to the comparison of the average value of the first weight and the second weight and the preset weight of the walnut screened by the corresponding primary aperture screening filter screen; if the classifying device belongs to qualified products, the flow distribution plate in the classifying device faces towards a qualified product receiving box, and if the classifying device belongs to unqualified products, the flow distribution plate in the classifying device faces towards an unqualified product receiving box.

10. The control method of the automatic walnut sorting system according to claim 9, characterized in that: the inclination angle of tertiary screening filter screen is 15, wherein:

the first-stage screen is selected to be 3.09 cm square in aperture, and the corresponding preset weight is 5.55 g;

selecting a square aperture of 3.78 cm for the secondary screen, wherein the corresponding preset weight is 7.69 g;

the tertiary screen selected a square aperture of 4.68 cm, corresponding to a preset weight of 14.60 g.

Technical Field

The invention relates to a product sorting technology, in particular to an automatic walnut sorting system and a control method.

Background

In the planting process of walnuts, the empty and shrivelled phenomena of walnuts are caused frequently because of improper cultivation or improper picking time. In China, the empty and shrivelled rate of walnuts is high. In order to improve the added value of agricultural products and the quality of products, the empty walnuts need to be removed.

Disclosure of Invention

In order to overcome various defects in the prior art, the invention aims to provide the automatic walnut sorting system which is high in automation degree and can efficiently and accurately sort walnuts and the control method.

In order to achieve the purpose, the invention adopts the following specific technical scheme:

firstly, the invention provides an automatic walnut sorting system which is characterized by comprising a feeding hopper, a downward-inclined three-stage screening filter screen is arranged below the feeding funnel, the apertures of the three-stage screening filter screen are sequentially arranged from small to large, a material receiving funnel is arranged below each stage of screening filter screen, a first weight collector is arranged below each material receiving funnel, the output end of the first weight collector is transmitted to a second weight collector through a first conveyor belt, the output end of the second weight collector is transmitted to a classifier through a second conveyor belt, one end of the classifier is provided with a qualified product receiving box, the other end is an unqualified product receiving box, and the classifier judges whether the walnut belongs to a qualified product or not according to the comparison of the weight average value acquired by the first weight collector and the second weight collector and the preset weight of the walnut screened by the corresponding primary aperture screening filter screen.

Optionally, the first weight collector comprises a first tray and a second tray, the first tray is fixedly arranged on the mounting seat, a blanking hole is formed in the first tray, the second tray is close to the first tray, the first tray is arranged relatively and horizontally rotates under the driving of a first driving motor, at least one walnut containing hole is formed in the second tray, a first gravity sensor is further arranged on the first tray, the walnut containing hole of the second tray is arranged at the position, close to the first tray, of the receiving funnel, a walnut is taken out, the walnut is driven by the driving motor to rotate along the first tray, and the first gravity sensor is arranged at the position, close to the first tray, of the receiving funnel, the walnut is taken out, and the first conveying belt is arranged at the position, close to the blanking hole.

Optionally, the blanking hole on the first tray and the walnut containing hole of second tray are the round hole, and the aperture is the same, and along with the rotation of second tray, the two can coincide each other in vertical direction.

Optionally, be provided with 4 walnut receiving holes on the second tray, and along circumference evenly distributed.

Optionally, the classifier includes a splitter plate, a rotating shaft is arranged in the middle of the splitter plate, and the rotating shaft is connected to an output shaft of the second driving motor.

Optionally, a rotation speed sensor for detecting the rotation speed of the second tray is arranged on the first weight collector.

Optionally, the aperture of the walnut containing hole is matched with the size of a walnut, the material receiving funnel is correspondingly provided with a feeding pipe between the disc surfaces of the second trays, the lower end pipe opening of the feeding pipe is attached to the disc surface of the second tray, and the pipe diameter of the feeding pipe is matched with the aperture of the walnut containing hole.

Optionally, the second weight collector comprises a weighing tray for parking a single walnut, a second weight sensor being provided under the weighing tray.

Based on the system, the invention also provides a control method of the automatic walnut sorting system, which comprises the following steps:

s1: placing the walnuts with sorting into the feeding funnel, enabling walnuts to be screened to slide down along the three-stage screening filter screen uniformly by controlling a material control switch of the feeding funnel, and screening walnuts with different sizes to enter corresponding material receiving funnels;

s2: controlling a second tray in a first weight collector below each material receiving funnel to rotate at a constant speed, so that walnuts in the material receiving funnels sequentially enter walnut accommodating holes in the second tray;

s3: the walnut passes through the first gravity sensor along with the rotation of the second tray to obtain a first weight;

s4: the walnuts in the second tray fall into the first conveyor belt from the blanking hole;

s5: the first conveyor belt conveys the walnuts into the second weight collector to obtain a second weight;

s6: pushing the walnuts on the second weight collector onto a second conveyor belt through the next walnut;

s7: the classifier judges whether the walnut belongs to a qualified product or not according to the comparison of the average value of the first weight and the second weight and the preset weight of the walnut screened by the corresponding primary aperture screening filter screen; if the classifying device belongs to qualified products, the flow distribution plate in the classifying device faces towards a qualified product receiving box, and if the classifying device belongs to unqualified products, the flow distribution plate in the classifying device faces towards an unqualified product receiving box.

Optionally, the inclination angle of the tertiary screening screen is 15 °, wherein:

the first-stage screen is selected to be 3.09 cm square in aperture, and the corresponding preset weight is 5.55 g;

selecting a square aperture of 3.78 cm for the secondary screen, wherein the corresponding preset weight is 7.69 g;

the tertiary screen selected a square aperture of 4.68 cm, corresponding to a preset weight of 14.60 g.

When the walnut sorting system provided by the invention is used, walnuts to be sorted are put into the feeding funnel, the walnuts fall into the obliquely arranged screening filter screen from the output end of the feeding funnel, falls down along the screening filter screens under the action of gravity, when the screening filter screens move to one of the screening filter screens with the aperture matched with the size of the screening filter screens, the walnut falls into a receiving funnel correspondingly arranged below the walnut from the mesh of the screening filter screen of the grade, and then falls into a first weight collector from the output end of the receiving funnel, the first weight collector collects a first weight value of the walnut and transmits the collected data to an external control device, after the first weight acquisition is finished, the walnuts fall into the first conveyor belt from the output end of the first weight acquisition device, and the second weight collector collects a second weight value of the walnuts along with the movement of the first conveyor belt, and the data is transmitted to an external control device. The external control device carries out averaging processing on the collected first weight value and the second weight value so as to judge whether the walnut is empty. If the walnut is empty, the walnut runs to the classifier along with the second conveying belt after the weight of the walnut is collected for the second time, and the walnut falls into the unqualified product receiving box through the guiding of the classifier, and if the walnut is not empty, the walnut runs to the classifier along with the second conveying belt after the weight of the walnut is collected for the second time, and the walnut falls into the qualified product receiving box through the guiding of the classifier, so that the sorting of the walnut is realized.

Compared with the prior art, the invention has the beneficial effects that: the labor cost is reduced, and the automation degree is high, so that the sorting efficiency is improved; the sizes of walnuts are pre-screened through a three-stage screening filter screen, so that the following sorting is more accurate; the sorting accuracy is further increased by the first weight collector and the second weight collector.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the automatic walnut sorting device.

Fig. 2 is a schematic structural diagram of the data acquisition device of the present invention.

FIG. 3 is a top view of the sorting apparatus of the present invention.

10-feeding funnel, 20-screening filter screen, 30-receiving funnel, 40-first weight collector, 60-classifier, 70-qualified product receiving box, 71-unqualified product receiving box, 44-first tray, 41-second tray, 42-first driving motor, 43-walnut accommodating hole, 45-first gravity sensor, 46-discharging hole, 12-feeding pipe, 51-first conveyor belt, 52-weighing tray, 521-second gravity sensor, 53-second conveyor belt, 61-flow distribution plate, 62-rotating shaft, 63-second driving motor and 80-rotating speed sensor.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, the present invention provides a technical solution: an automatic walnut sorting system comprises a feeding funnel 10, a downward-inclined three-stage screening filter screen 20 is arranged below the feeding funnel 10, the apertures of the three-stage screening filter screens 20 are arranged from small to big in sequence, a material receiving funnel 30 is arranged below each stage of screening filter screens 20, a first weight collector 40 is arranged below each material receiving funnel 30, the output of the first weight collector 40 is conveyed via a first conveyor belt 51 to a second weight collector, the output of the second weight harvester is conveyed via a second conveyor 53 to a sorter 60, one end of the classifier 60 is provided with a qualified product receiving box 70, the other end is an unqualified product receiving box 71, the classifier 60 compares the weight average value collected by the first weight collector 40 and the second weight collector with the preset weight of the walnuts screened by the corresponding primary aperture screening filter screen to judge whether the walnuts belong to qualified products.