Seed impurity removal device

Abstract

The utility model discloses a seed impurity removal device. The seed impurity removal device comprises a mixing tank, a peristaltic pump, an impurity removal box and a discharge conveying belt which are arranged in sequence, a spiral conveyor and a water adding pipe are arranged at an opening in the upper side of the mixing tank; an inlet of the peristaltic pump is connected with the bottom of the mixing tank, an outlet of the peristaltic pump is connected with a hose extending into the impurity removal box, a swing mechanism is arranged between the free end of the hose and the impurity removal box in a matched mode, an inclined plate, a collecting conveying belt and a reciprocating scraper driven by a motor are further arranged in the impurity removal box, and a water inlet pipe and a water outlet pipe are further arranged on the impurity removal box. The discharging conveying belt is located below the downstream side of the collecting conveying belt. According to the utility model, continuous equipment is used for liquid separation and impurity removal of seeds, so that the trouble of batch impurity removal of the seeds is avoided, and the labor intensity of workers is reduced and the impurity removal efficiency of the seeds is improved; in addition, after the seeds enter the liquid, a rolling and flowing path is formed, separation of impurities and the seeds is facilitated, the impurities can be prevented from being wrapped by the seeds and sinking to the bottom, and the impurity removal effect is better compared with existing equipment.

Description

Technical Field

[0001] The utility model relates to the field of seed machinery, in particular to a seed impurity removal device. Background Art

[0002] Seed impurity removal, also known as seed selection, is a key process in the seed production process. Its purpose is to remove impurities in the seeds, such as branches, leaves, debris, shriveled grains, diseased grains, etc., in order to facilitate smooth sowing. Liquid selection is a widely used method of seed impurity removal. The principle is that the density of healthy seeds and impurities is different. The impurities are gathered on the liquid surface through the buoyancy of the liquid to achieve separation of seeds and impurities. However, the existing seed liquid selection impurity removal equipment cannot operate continuously well. The seeds to be cleaned need to enter the impurity removal equipment in batches for impurity removal. The batch addition and removal of seeds increases the labor workload of workers and reduces the efficiency of seed impurity removal. There is a lot of room for improvement. Utility Model Content

[0003] In view of the problems existing in the background technology, the purpose of the utility model is to provide a seed impurity removal device, which effectively solves the problems existing in the background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A seed impurity removal device comprises a mixing tank, a peristaltic pump, an impurity removal box and a discharge conveyor belt arranged in sequence from upstream to downstream; the upper side of the mixing tank is open and an electric stirring shaft is coaxially arranged in the mixing tank, a screw conveyor and a water supply pipe are arranged at the upper opening of the mixing tank; the inlet of the peristaltic pump is connected to the bottom of the mixing tank, the outlet of the peristaltic pump is connected to a hose extending into the impurity removal box, a swing mechanism is arranged between the free end of the hose and the impurity removal box, and an inclined plate, a collecting conveyor belt and a reciprocating scraper driven by a motor are also arranged in the impurity removal box. The plate is located between the collecting conveyor belt and the hose, a plurality of baffles are evenly distributed on the collecting conveyor belt, the reciprocating scraper is located between the inclined plate and the hose, and bell mouths corresponding to the reciprocating scraper are respectively arranged on the front and rear sides of the dust removal box, and a slag discharge trough with an upper opening is arranged below the outlet side of the bell mouth; the dust removal box is also provided with a water inlet pipe and a water outlet pipe, and valves are respectively arranged on the water inlet pipe and the water outlet pipe; the discharging conveyor belt is located below the downstream side of the collecting conveyor belt, and a plurality of blowing nozzles facing the collecting conveyor belt are also arranged on the discharging conveyor belt.

[0006] Furthermore, the swing mechanism includes a servo motor and a turntable, a reduction gear set is arranged between the servo motor and the turntable, the turntable is rotatably mounted on the debris removal box, a radial rod is fixed on the circumference of the turntable, a vertical rod is fixed at the end of the radial rod, and the vertical rod is fixedly connected to the free end of the hose.

[0007] Furthermore, the free end of the hose has a flat outlet.

[0008] Furthermore, a low resistance layer is provided on the side of the inclined plate facing the hose.

[0009] Furthermore, the material of the low resistance layer is polytetrafluoroethylene.

[0010] Furthermore, a vibration motor is arranged on the inclined plate.

[0011] Furthermore, two guide slide bars and a reciprocating screw are provided between the reciprocating scraper and the impurity removal box. The reciprocating screw is driven by a motor and is located between the two guide slide bars. A slider that cooperates with the reciprocating screw is fixed on the reciprocating scraper.

[0012] The utility model has the following beneficial technical effects:

[0013] The utility model adopts continuous equipment to carry out liquid selection and impurity removal on seeds. It only needs to supply liquid and seeds to be removed from the device upstream, which avoids the trouble of removing impurities from seeds in batches, is beneficial to reducing the labor intensity of workers and improving the efficiency of seed impurity removal. In addition, in the present application, after the seeds enter the liquid, there is a tumbling flow path, which is beneficial to the separation of impurities and seeds, and can prevent impurities from being entrained by the seeds and sinking to the bottom. Compared with the existing equipment, the impurity removal effect is also better, which is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 It is a top view of the debris removal box in the embodiment of the utility model. DETAILED DESCRIPTION

[0016] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0017] In the description of the present utility model, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] like Figure 1 and Figure 2 As shown, a seed impurity removal device described in this embodiment includes a mixing tank 1, a peristaltic pump 2, an impurity removal box 3 and a discharge conveyor belt 4 arranged in sequence from upstream to downstream; the upper side of the mixing tank 1 is open and an electric stirring shaft 5 is coaxially arranged in the mixing tank 1, a screw conveyor 6 and a water adding pipe 7 are arranged at the upper opening of the mixing tank 1, the screw conveyor 6 continuously conveys seeds to be impurity-removed into the mixing tank 1, and the water adding pipe 7 adds water into the mixing tank 1 to maintain the water level in the mixing tank 1;

[0019] The inlet of the peristaltic pump 2 is connected to the bottom of the mixing tank 1, and the liquid-seed mixture in the mixing tank 1 enters the peristaltic pump 2 through the bottom of the mixing tank 1. The outlet of the peristaltic pump 2 is connected to a hose 8 extending into the impurity removal box 3. A swing mechanism is provided between the free end of the hose 8 and the impurity removal box 3, so that the free end of the hose 8 can swing in an arc to disperse the delivered materials. The swing mechanism includes a servo motor 9 and a turntable 10. A reduction gear set is provided between the servo motor 9 and the turntable 10. The turntable 10 is rotatably mounted. On the impurity removal box, the reduction gear set includes a driven wheel 11 coaxially fixed on the top surface of the rotating disk 10 and a driving wheel 12 coaxially fixed on the rotating shaft of the servo motor 9. The driving wheel 12 is meshed with the driven wheel 11, and the transmission ratio of the driving wheel 12 to the driven wheel 11 is greater than 1. A radial rod 13 is fixed on the circumferential surface of the rotating disk 10, and a vertical rod 14 is fixed on the end of the radial rod 13. The vertical rod 14 is fixedly connected to the free end of the hose 8. The free end of the hose 8 has a flat outlet 15, which reduces the thickness of the sprayed seed flow and facilitates the floating of impurities;

[0020] The impurity removal box 3 is also provided with an inclined plate 16, a collecting conveyor belt 17 and a reciprocating scraper 18 driven by a motor. The inclined plate 16 is located between the collecting conveyor belt 17 and the hose 8. A low-resistance layer 19 is provided on the side of the inclined plate 16 facing the hose 8, which is conducive to the sliding of seeds. The material of the low-resistance layer 19 is polytetrafluoroethylene. A vibration motor 20 is provided on the inclined plate 16 to further facilitate the sliding of seeds and prevent seeds from being retained on the inclined plate 16. The collecting conveyor belt 17 is Z-shaped, and the upstream part of the collecting conveyor belt 17 is located below the inclined plate 16 to receive the fallen seeds. A plurality of baffles 21 are evenly distributed on the collecting conveyor belt 17; the impurity removal box 3 is also provided with a water inlet pipe 22 and a water outlet pipe 23, and valves are provided on the water inlet pipe 22 and the water outlet pipe 23 respectively;

[0021] The reciprocating scraper 18 is located between the inclined plate 16 and the hose 8, and the front and rear sides of the impurity removal box 3 are respectively provided with bell mouths 24 corresponding to the reciprocating scraper 18. The liquid surface impurities and part of the water flow pushed by the reciprocating scraper 18 enter the bell mouth 24 and are discharged. A slag discharge trough 25 with an upper opening is provided below the outlet side of the bell mouth 24. The installation structure of the reciprocating scraper 18 is as follows: two guide slide bars 26 and a reciprocating screw 27 are provided between the reciprocating scraper 18 and the impurity removal box 3. The reciprocating screw 27 is driven by a motor and is located between the two guide slide bars 26. A slider matching the reciprocating screw 27 is fixed on the reciprocating scraper 18.

[0022] The discharge conveyor belt 4 is located below the downstream side of the collecting conveyor belt 17. The discharge conveyor belt 4 is also provided with a plurality of blowing nozzles 28 facing the collecting conveyor belt 17. Specifically, a blowing pipe 29 is provided above the discharge conveyor belt 4. The plurality of blowing nozzles 28 are evenly distributed on the blowing pipe 29 along the axial direction. The blowing nozzles 28 face the turning point of the collecting conveyor belt 17 to help the seeds on the collecting conveyor belt 17 fall off and prevent the seeds from adhering to the collecting conveyor belt 17.

[0023] The working principle of this embodiment is:

[0024] The seeds to be cleaned enter the mixing tank 1 and are mixed with the water flow and discharged to the peristaltic pump 2, and are sent to the hose 8 through the peristaltic pump 2. The hose 8 keeps swinging slowly while spraying the seeds mixed with the water flow to below the liquid level in the cleaning box 3. The seed flow presents an approximately parabolic trajectory, and the impurities with lower density float to the liquid level of the cleaning box 3. The seeds are blocked by the inclined plate 16 and fall onto the collecting conveyor belt 17 to be sent out, and fall onto the discharging conveyor belt 4 after reaching the downstream. Compared with the prior art, the continuous equipment is used in the present embodiment to carry out liquid selection and impurity removal for the seeds. It is only necessary to supply the liquid and the seeds to be cleaned upstream of the device, which eliminates the trouble of cleaning the seeds in batches, and is conducive to reducing the labor intensity of the workers and improving the efficiency of seed cleaning. In addition, in the present embodiment, the seeds have a tumbling flow path after entering the liquid, which is conducive to the separation of impurities and seeds, and can prevent the impurities from being engulfed by the seeds and sinking to the bottom. Compared with the existing equipment, the impurity removal effect is also better, which is suitable for promotion and use.

[0025] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific uses.

Claims

1. A seed impurity removal device, characterized in that: The invention comprises a mixing tank, a peristaltic pump, a de-dusting box and a discharging conveyor belt which are arranged in sequence from upstream to downstream; the upper side of the mixing tank is open and an electric stirring shaft is coaxially arranged in the mixing tank, a screw conveyor and a water supply pipe are arranged at the upper opening of the mixing tank; the inlet of the peristaltic pump is connected to the bottom of the mixing tank, the outlet of the peristaltic pump is connected to a hose extending into the de-dusting box, a swing mechanism is arranged between the free end of the hose and the de-dusting box, an inclined plate, a collecting conveyor belt and a reciprocating scraper driven by a motor are also arranged in the de-dusting box, the inclined plate The plate is located between the collecting conveyor belt and the hose, and a plurality of baffles are evenly distributed on the collecting conveyor belt. The reciprocating scraper is located between the inclined plate and the hose, and bell mouths corresponding to the reciprocating scraper are respectively arranged on the front and rear sides of the impurity removal box, and a slag discharge trough with an upper opening is arranged below the outlet side of the bell mouth; a water inlet pipe and a water outlet pipe are also arranged on the impurity removal box, and valves are respectively arranged on the water inlet pipe and the water outlet pipe; the discharging conveyor belt is located below the downstream side of the collecting conveyor belt, and a plurality of air blowing nozzles facing the collecting conveyor belt are also arranged on the discharging conveyor belt.

2. A seed impurity removal device according to claim 1, characterized in that: The swing mechanism includes a servo motor and a turntable, a reduction gear set is arranged between the servo motor and the turntable, the turntable is rotatably mounted on the debris removal box, a radial rod is fixed on the circumference of the turntable, a vertical rod is fixed on the end of the radial rod, and the vertical rod is fixedly connected to the free end of the hose.

3. A seed impurity removal device according to claim 1 or 2, characterized in that: The free end of the hose has a flat outlet.

4. A seed impurity removal device according to claim 1, characterized in that: A low resistance layer is arranged on the side of the inclined plate facing the hose.

5. A seed impurity removal device according to claim 4, characterized in that: The material of the low resistance layer is polytetrafluoroethylene.

6. A seed impurity removal device according to any one of claims 1, 4 and 5, characterized in that: A vibration motor is arranged on the inclined plate.

7. The seed impurity removal device according to claim 1, characterized in that: Two guide slide bars and a reciprocating screw are provided between the reciprocating scraper and the impurity removal box. The reciprocating screw is driven by a motor and is located between the two guide slide bars. A slider that cooperates with the reciprocating screw is fixed on the reciprocating scraper.

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