Pea screening and impurity removing device

Abstract

The utility model relates to the technical field of seed impurity removal equipment, in particular to a pea screening and impurity removal device which comprises a bin body, a screen drum is fixedly connected in a left cavity of the bin body, an auger is installed in the screen drum, a material rotating bin is arranged at the output end of the right side of the screen drum, a first air closing device is fixedly connected to the bottom of the material rotating bin, and a fan is fixedly connected to a baffle. An air outlet is formed in the right side cavity, a second discharging opening and a third discharging opening are formed in the lower portion of the right side cavity, a second air-lock valve is fixedly connected to the lower portion of the second discharging opening, a third air-lock valve is fixedly connected to the lower portion of the third discharging opening, and a material distributing cone is fixedly connected between the feeding end of the second discharging opening and the feeding end of the third discharging opening; according to the screening and impurity removing device, small-size impurities such as laterally-crushed seed pods and thick crushed skin particles at the wrinkles of the seed pods are screened out in advance through the screening drum with the auger, light impurities such as crushed pods and crushed stems and leaves are screened out through winnowing, and the process is simplified while the screening and impurity removing effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of seed impurity removal equipment, specifically a pea screening and impurity removal device. Background Technology

[0002] Peas, an annual climbing herbaceous plant belonging to the genus *Vitis* in the legume family, require threshing and impurity removal during seed production. Threshing refers to separating the seed pods from the pods using mechanical or manual methods after drying. After threshing, impurity removal is necessary to remove impurities and damaged seeds to ensure seed purity. Currently used pea seed impurity removal equipment mostly relies on air separation to remove broken skin fragments from the surface of the seed pods after threshing. However, air separation is not very effective at removing thicker skin fragments from the folds of the seed pods, requiring subsequent manual removal or removal by vibrating screens. Therefore, further improvements are needed to the pea impurity removal device to simplify subsequent processes and save costs. Utility Model Content

[0003] To address the above technical problems, this utility model provides a pea screening and impurity removal device.

[0004] To solve the above-mentioned technical problems, the present invention provides a pea screening and impurity removal device, comprising a chamber 1, which is divided into left and right cavities by a baffle. A sieve cylinder 301 is fixedly connected to the left cavity of the chamber 1, and an auger 3 is installed inside the sieve cylinder 301. The drive motor of the auger 3 is fixedly connected to the chamber 1 through a partition 16. A first discharge port 4 is provided below the sieve cylinder 301 in the chamber 1. A feed hopper 2 is provided on the left side of the sieve cylinder 301, and a transfer chamber 5 is provided at the output end on the right side of the sieve cylinder 301. A first airlock 6 is fixedly connected to the bottom of the transfer chamber 5. The transfer chamber 5 is located on the right side of the chamber 1. Inside the side cavity, a fan 11 is fixedly connected to the baffle. The output end of the fan 11 faces the right side cavity. An air outlet is provided on the side of the right side cavity opposite to the output end of the fan 11. A filter screen 12 is fixedly connected to the air outlet. A second discharge port 9 is provided on the side of the right side cavity near the fan 11. A third discharge port 10 is provided on the side of the right side cavity near the air outlet. A second airlock 7 is fixedly connected below the second discharge port 9. A third airlock 8 is fixedly connected below the third discharge port 10. A material distribution cone 15 is fixedly connected between the inlet ends of the second discharge port 9 and the third discharge port 10.

[0005] Furthermore, a motor 13 is fixedly connected next to the air outlet. The output end of the motor 13 passes through the chamber 1 and is fixedly connected to a scraper 14. The scraper 14 is in contact with the inner wall of the chamber 1.

[0006] Furthermore, the screen cylinder 301 is installed at an angle, with the feed end of the screen cylinder 301 being lower than the discharge end.

[0007] Furthermore, the hopper body 1 is fixedly connected with support legs 17 around its perimeter.

[0008] This utility model has the following advantages compared with the prior art:

[0009] This invention utilizes an inclined screen cylinder and auger to increase the contact effect with the threshed pods and impurities, thereby enhancing the separation of small particles. It can remove broken pods and thicker fragments of the outer skin from pod folds. Air separation removes lightweight impurities such as broken pod skins and stems. A rotating scraper at the air outlet prevents these impurities from sticking and clogging the airflow, thus improving the separation efficiency. Furthermore, the use of airlocks at both the inlet and outlet ends concentrates the airflow, further enhancing the separation effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] In the diagram: 1. Bin body, 2. Feed hopper, 3. Screwdriver, 301. Screen cylinder, 4. First discharge port, 5. Transfer bin, 6. First airlock, 7. Second airlock, 8. Third airlock, 9. Second discharge port, 10. Third discharge port, 11. Fan, 12. Filter screen, 13. Motor, 14. Scraper, 15. Dividing cone, 16. Baffle plate, 17. Support leg. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figure 1The pea screening and impurity removal device shown includes a chamber 1, which is divided into two chambers by a baffle. The left chamber is used for screening, and the right chamber is used for air separation. A screen cylinder 301 is fixedly connected to the left chamber of the chamber 1. An auger 3 is installed inside the screen cylinder 301, which is responsible for conveying the material while screening it. The screen cylinder has a mesh size of about 10. The drive motor of the auger 3 is fixedly connected to the chamber 1 through a partition 16. A first discharge port 4 is opened below the screen cylinder 301 in the chamber 1 to discharge the screened broken pods and small particle impurities. A feed hopper 2 is set on the left side of the screen cylinder 301, and a transfer bin 5 is set at the output end on the right side of the screen cylinder 301. The transfer bin 5 is used to temporarily store the screened material. A first airlock 6 is fixedly connected to the bottom of the transfer bin 5, which can close the air passage and control the feeding speed by controlling the rotation speed to achieve uniform feeding and ensure the air separation effect. The transfer hopper 5 is located inside the right cavity of the hopper body 1. A fan 11 is fixedly connected to the baffle plate, with the output end of the fan 11 facing the right cavity. An air outlet is provided on the side of the right cavity opposite to the output end of the fan 11. A filter screen 12 is fixedly connected to the air outlet. The air outlet can be connected to other gas treatment equipment, such as a dust collector, to avoid polluting the working environment. A second discharge port 9 is provided on the side of the right cavity below the fan 11 to discharge the screened seed pods. A third discharge port 10 is provided on the side of the right cavity below the air outlet to discharge lighter impurities. A second airlock 7 is fixedly connected below the second discharge port 9, and a third airlock 8 is fixedly connected below the third discharge port 10 to close the air passage. A dividing cone 15 is fixedly connected between the feed ends of the second discharge port 9 and the third discharge port 10 to improve the screening effect and facilitate the separate discharge of seed pods and impurities.

[0014] To prevent lightweight impurities such as pod fragments, stem fragments, and leaves from sticking to the air outlet during air separation and causing air blockage, thus affecting the air separation effect, a motor 13 is fixedly connected next to the air outlet. The output end of the motor 13 passes through the chamber 1 and is fixedly connected to a scraper 14. The scraper 14 abuts against the inner wall of the chamber 1 and can scrape off the impurities stuck to the filter screen 12.

[0015] In order to increase the contact time between the material and the screen cylinder and improve the screening effect, the screen cylinder 301 is installed at an angle, with the feed end of the screen cylinder 301 being lower than the discharge end.

[0016] To facilitate the installation of the device, support legs 17 are fixedly connected around the perimeter of the chamber 1.

[0017] The working process of this embodiment is as follows:

[0018] The threshed seed pods are fed into the screen cylinder 301 through the feed hopper 2. Simultaneously, the auger 3 moves the seed pods towards the output end. During this process, the seed pods continuously rub against the screen cylinder, achieving a certain degree of crushing effect on large-volume impurities. These impurities are then screened out along with smaller-volume impurities, which are discharged through the first discharge port 4. Subsequently, the seed pods are discharged from the output end of the screen cylinder 301 and fall into the transfer bin 5. The first airlock 6 then evenly discharges and lowers the seed pods, while the air output from the blower 11 passes laterally through the bin. The right-hand cavity is discharged through the air outlet via the filter screen 12. The fallen seed pods are air-sorted. Impurities such as pod fragments, stem fragments, and leaves mixed in with the seed pods are blown above the third airlock 8 and finally discharged through the third discharge port 10. The sieved seed pods are finally discharged through the second airlock 7 and discharged through the second discharge port 9. The motor 13 can drive the scraper 14 to rotate, removing the impurities adhering to the filter screen 12. The removed impurities fall to the third airlock 8 and are discharged through the third discharge port 10.

Claims

1. A pea screening and impurity removing device, comprising a bin body (1), the bin body (1) is divided into left and right two cavities by a baffle, characterized in that: A screen cylinder (301) is fixedly connected to the left cavity of the silo body (1). An auger (3) is installed inside the screen cylinder (301). The drive motor of the auger (3) is fixedly connected to the silo body (1) through a partition (16). A first discharge port (4) is opened below the screen cylinder (301) in the silo body (1). A feed hopper (2) is provided on the left side of the screen cylinder (301). A transfer bin (5) is provided at the output end on the right side of the screen cylinder (301). A first airlock (6) is fixedly connected to the bottom of the transfer bin (5). The transfer bin (5) is located in the right cavity of the silo body (1). A fan (11) is fixedly connected to the baffle. The output end of the blower (11) faces the right cavity. An air outlet is provided on the side of the right cavity opposite to the output end of the blower (11). A filter screen (12) is fixedly connected to the air outlet. A second discharge port (9) is provided on the side of the right cavity below the blower (11). A third discharge port (10) is provided on the side of the right cavity below the air outlet. A second airlock (7) is fixedly connected below the second discharge port (9). A third airlock (8) is fixedly connected below the third discharge port (10). A material distribution cone (15) is fixedly connected between the feed ends of the second discharge port (9) and the third discharge port (10).

2. The pea de-stoning apparatus according to claim 1, characterized in that: A motor (13) is fixedly connected next to the air outlet. The output end of the motor (13) passes through the chamber (1) and is fixedly connected to a scraper (14). The scraper (14) is in contact with the inner wall of the chamber (1).

3. The pea de-stoning apparatus of claim 1, wherein: The screen cylinder (301) is installed at an angle, with the feed end of the screen cylinder (301) being lower than the discharge end.

4. The pea de-stoning apparatus of claim 1, wherein: The hopper body (1) is fixedly connected to support legs (17) around its perimeter.

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