CN217314335U - Soybean seed sieving mechanism - Google Patents

Abstract

A soybean seed screening device comprises a fixing frame, a transmission frame, transmission rollers, a belt-shaped screen mesh, a feeding hopper and vibration exciters, wherein the transmission frame is connected and installed on the fixing frame, the transmission rollers are arranged and installed on a frame body of the transmission frame, screening round holes are formed in the flexible closed annular belt-shaped screen mesh to form a screen mesh surface, an integrally matched ring is sleeved on each transmission roller, an inclined working plane is formed at the upper end of each transmission roller, the vibration exciters are fixedly installed on the transmission frame, and the feeding hopper is arranged at the upper end of the transmission frame Screening efficiency and the good seed rate of preferred seed, but also have the automatic anti-blocking function of sieve hourglass round hole, guarantee operation work efficiency.

Description

Soybean seed sieving mechanism

Technical Field

The utility model relates to a seed sieving mechanism, concretely relates to soybean seed sieving mechanism.

Background

The soybean is one of the important grain crops in China, belongs to annual herbaceous plants in angiosperms, dicotyledon, leguminosae and soyabean, is rich in protein, isoflavone and other nutritional substances, is an ideal high-quality crop plant, has outstanding economic value, is well received and loved by the masses of people, and has great market demand. At present, the soybean planting generally adopts an agricultural method of pregerminating seeds and then transplanting the seedlings, the seeds need to be screened in an improved manner before the pregermination treatment, the seeds with poor quality are removed, the improved seeds with excellent quality are preferably selected, the germination rate of the sown seeds and the survival rate of the planted improved seeds are ensured, in the current agricultural production activity, the screening of the seeds mostly adopts a rough operation mode of manually selecting by manual visual inspection, not only has high labor intensity and low working efficiency and is difficult to adapt to the requirements of large-scale agricultural production, but also obviously has the defects of low seed selection identification degree and poor quality balance of the selected seeds, and can cause great adverse effects on the quality and yield of the planted and output soybeans, in recent years, with the industrial development of agricultural production, the production demand is increasing day by day, although the technical scheme of the existing soybean seed screening device is continuously disclosed, can solve intensity of labour height and the low problem of work efficiency, however, these technical scheme generally all adopt fixed screen cloth structure, use the seed volume to screen hourglass selection as the benchmark, obviously, the soybean seed that the great but morphological defect of volume of this kind of screening hourglass selection mode can't be screened out, still there is the not high, the relatively poor problem of quality equilibrium of preferred fine variety screening degree of distinguishing, the existence of this problem obviously can't provide reliable assurance to the high-efficient planting production of follow-up high-quality soybean, consequently, it is necessary to improve the research to soybean seed sieving mechanism, solve prior art problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a soybean seed sieving mechanism improves screening effect and screening efficiency.

A soybean seed screening apparatus comprising: the device comprises a fixing frame, a transmission frame, transmission rollers, a belt-shaped screen and a feeding hopper, wherein the fixing frame is a basic structural component and can be fixedly arranged on the ground or an object attached to the ground, the transmission frame is a frame-shaped structural body and is connected and arranged on the fixing frame, the transmission rollers which are parallel to each other are arranged on a frame body of the transmission frame and can be driven by a motor to rotate relative to the transmission frame, the belt-shaped screen is of a flexible closed annular crawler-type structure and is integrally matched and sleeved on each transmission roller arranged on the transmission frame in a loop manner, the transmission rollers can be driven to transmit and rotate to keep the belt-shaped screen to form an inclined working plane with an inclination angle A relative to a horizontal plane at the upper end of the transmission frame, screening circular holes which are regularly distributed are arranged on the belt surface of the belt-shaped screen to form a screen surface, and the aperture of the screening circular holes is set as a lower limit threshold value of soybean fine grain size, the feeding hopper is fixedly arranged at the upper end of the transmission frame relative to the fixed frame, so that a discharge port of the feeding hopper is correspondingly arranged in the high-end area of the inclined working plane, and meanwhile, a first material receiving box is arranged at the lower part of the lower end edge of the inclined working plane and used for collecting the soybean preferred seeds directly rolled off from the inclined working plane.

The soybean seed screening device is characterized in that a guide disc is preferably arranged inside the ring body of the belt-shaped screen and below the inclined working plane, the guide disc has an inclination angle towards one side of the transmission frame to the outside, the whole disc surface corresponds to a screening area on the inclined working plane, screening seeds falling from the screen of the working plane can be completely contained in the disc surface, and the screening seeds are guided out of the ring body of the belt-shaped screen along the inclination direction of the guide disc.

The utility model provides a soybean seed sieving mechanism, further preferred the derivation dish mouth lower extreme of guide dish is provided with the second and receives the workbin, be used for collecting by slope work plane sifts the discharge sieve hourglass seed, simultaneously slope work plane high-end still is provided with the third along the lower part and receives the workbin for the collection because of the particle diameter is great both can't pass through sieve hourglass round hole sifts, again because of the relatively poor unable follow of degree of roundness slope work plane rolls the defect seed that falls naturally, realizes the classification of seed and selects separately in grades.

The soybean seed sieving mechanism further comprises: the vibration exciter is fixedly installed on the frame body of the transmission frame, meanwhile, the vibration exciter is matched with the vibration exciter in functional action, pressure springs are respectively arranged between the transmission frame and the connecting installation points of the fixing frame, and the transmission frame is connected with the fixing frame in a structural balance mode.

The beneficial effects of the utility model are that, a soybean seed sieving mechanism is provided, adopt the banded screen cloth of flexible closed endless track formula structure, on guaranteeing that the sufficient collection of the full preferred seed of particle diameter and the form that rolls down naturally along the working face that inclines and the collection basis of the less seed of particle diameter that falls through the working face sieve that inclines, can also pass through the upward motion of banded screen cloth, will have big particle diameter but the form is not full enough or have the form defect, lead to its defect seed that neither can roll down through the working face sieve that inclines and also can't roll down from the working face that inclines to convey to the working face high-end that inclines and roll down and collect, the tertiary classification screening of preferred seed, sieve hourglass seed and defect seed has been realized, can obviously improve the good breed rate of preferred seed; meanwhile, by means of crawler-type rotary motion of the belt-shaped screen, impurity objects or abnormal bean grains possibly accumulated in the screen leakage circular holes can be automatically removed, the phenomenon that the screen leakage function of the belt-shaped screen is reduced due to blockage of the screen leakage circular holes, adverse effects on the seed screening effect are avoided, and the seed screening effect and the working efficiency are guaranteed; in addition, set up vibrations structure and vibrator on the driving frame, can strengthen the tertiary function of selecting separately of soybean, further improve the screening effect and the screening efficiency of soybean seed.

Drawings

FIG. 1 is a schematic view of a soybean seed screening machine.

FIG. 2 is a left side view of the soybean seed screening machine of FIG. 1.

Detailed Description

Further, the claimed technical solution of the present invention is described in more detail with reference to the specific embodiments and the accompanying drawings.

A soybean seed screening device is shown in figures 1 and 2 and comprises a fixed frame 1, a transmission frame 2, a transmission roller 3, a belt-shaped screen mesh 4, a feeding hopper 5, a guide disc 7, a vibration exciter 10, a first material receiving box 6, a second material receiving box 8 and a third material receiving box 9, wherein the fixed frame 1 is fixedly arranged on the ground, the transmission frame 2 is a frame structure with a triangular side section, 4 spring connecting pins connected with pressure springs 11 are distributed on the bottom surface, the transmission frame 2 is fixedly mounted on the fixed frame 1 in a balanced manner through the spring connecting pin structure, the transmission roller 3 is respectively mounted at the apex angles of 3 side sections of the transmission frame 2, the transmission rollers 3 are parallel to each other and can rotate relative to the transmission frame 2, the belt-shaped screen mesh 4 in a closed ring shape is integrally matched with the 3 transmission rollers 3 to form a crawler-type rotary conveying structure, the belt-shaped screen mesh 4 is enabled to form an inclined working plane with an inclination angle A relative to a horizontal plane at the upper end of the transmission frame 2, based on theoretical calculation and experimental analysis of the motion state of single soybeans under the condition of limited threshold value of the particle size of the optimized soybean seeds, the inclination angle A of the inclined working plane is optimally set to be 20 degrees so as to be beneficial to rolling off of the optimized seeds and residing of defective seeds, regularly-arranged screening circular holes are formed in the belt surface of the belt-shaped screen mesh 4 to form a screen surface, the guide disc 7 is integrally shaped like a shovel disc and is arranged in the ring body of the belt-shaped screen mesh 4 and integrally corresponds to a vertical projection surface of a screen area on the inclined working plane, the guide disc is fixedly arranged on the transmission frame 2, the disc surface has an inclination angle towards one side of the transmission frame 2 to the outside, and the vibration exciter 10 is a double-shaft vibration exciter and is fixedly arranged on the frame body of the transmission frame 2, the soybean screening machine can drive the transmission frame 2 to generate linear vibration, the feeding hopper 5 is relative, the fixing frame 1 is fixedly arranged at the upper end of the transmission frame 2, a built-in current-limiting mechanism is arranged at the upper end of the transmission frame, the soybean feeding speed can be controlled, soybeans are enabled to be in a dynamic flat-laying flowing state on the inclined working plane all the time, meanwhile, the first material receiving box 6 is arranged at the lower end of the lower end edge of the inclined working plane, the second material receiving box 8 is arranged at the lower end of the leading-out plate opening of the leading plate 7, and the third material receiving box 9 is arranged at the lower end of the high end edge of the inclined working plane and is respectively used for collecting the optimal seeds, the screening seeds and the defect seeds, so that three-level classification screening of the soybean seeds is realized.

Firstly, starting the soybean seed screening device, driving a driving roller 3 to rotate by electric power, vibrating a vibration exciter 10 to enable the driving roller 3 to drive a belt-shaped screen 4 to form transmission motion, driving a transmission frame 2 to vibrate by the vibration exciter 10, starting a feeding hopper 5 to feed soybeans to an inclined working plane of the belt-shaped screen 4, and adjusting and controlling the feeding speed to enable the soybeans to be kept in a dynamic tiled state on the inclined working plane; at this time, the screened seeds with the particle size smaller than the aperture of the screened circular holes formed on the belt-shaped screen mesh 4 can naturally screen and fall from the screened circular holes, for the screened seeds which cannot naturally fall due to mutual accumulation at the screened circular holes, the vibration of the transmission frame 2 can disperse and screen the screened seeds instantly, so as to avoid the seeds from being retained on the inclined working plane to form movement obstacle, and the preferred seeds with larger particle size and full shape can naturally roll along the inclined working plane to the lower end, once encountering the obstruction of the screened circular holes formed on the belt-shaped screen mesh 4 or other soybean grains retained on the belt-shaped screen mesh 4, the vibration of the transmission frame 2 can rapidly enable the preferred seeds to get rid of the obstruction and smoothly slide from the lower end of the inclined working plane, and meanwhile, the defect seeds with larger particle size but insufficient shape fullness can not naturally roll on the inclined working plane or roll slowly towards the lower end due to the inability of the seeds to naturally roll on the inclined working plane, these defective seeds will be conveyed to the high end of the inclined work surface by the belt screen 4 which is moving toward the S direction and naturally fall; wherein, sieve hourglass seed can be accepted by guide plate 7 and accomodate and collect in second receipts workbin 8 along the direction of slope is whole, the vibrations of driving frame 2 help accelerating guide plate 7 is right sieve hourglass seed's guide collection speed, preferred seed with defect seed then can be respectively free fall collect in first receipts workbin 6 and third receipts workbin 9, until the completion is to the categorised screening of whole soybean seeds after, can close and stop a soybean seed sieving mechanism's operation.

Claims (4)

1. A soybean seed sieving mechanism, comprising: the device comprises a fixing frame (1), a transmission frame (2), a transmission roller (3), a strip-shaped screen (4) and a feeding hopper (5), wherein the fixing frame (1) is a basic structure member, the transmission frame (2) is a frame-shaped structure body and is connected and installed on the fixing frame (1), the transmission rollers (3) which are parallel to each other are arranged on a frame body of the transmission frame (2), the transmission rollers (3) can rotate relative to the transmission frame (2), the strip-shaped screen (4) is of a flexible closed annular crawler-type structure, the whole assembly ring is sleeved on each transmission roller (3) installed on the transmission frame (2) and can be driven by the transmission rollers (3) to rotate, the strip-shaped screen (4) is kept at the upper end of the transmission frame (2) to form an inclined working plane with an inclination angle A relative to the horizontal plane, and screen circular holes which are regularly arranged are formed on the strip-shaped screen (4) to form a screen surface, the feeding hopper (5) is fixedly arranged at the upper end of the transmission frame (2) relative to the fixing frame (1), so that a discharge port of the feeding hopper (5) is correspondingly arranged in the high-end area of the inclined working plane, and a first material receiving box (6) is arranged at the lower end of the low-end edge of the inclined working plane.

2. The soybean seed screening apparatus of claim 1, wherein: a guide disc (7) is arranged in the ring body of the belt-shaped screen (4) and below the inclined working plane, the guide disc (7) has an inclined angle towards one side of the transmission frame (2) to the outside, and the whole disc surface corresponds to a screening area on the inclined working plane.

3. The soybean seed screening apparatus of claim 2, wherein: a second material receiving box (8) is arranged at the lower end of a leading-out plate opening of the guide plate (7), and a third material receiving box (9) is further arranged at the high end edge of the inclined working plane along the lower part.

4. The soybean seed screening apparatus of any one of claims 1 to 3, further comprising: the vibration exciter (10) is fixedly installed on the frame body of the transmission frame (2), and meanwhile, pressure springs (11) are respectively arranged between the transmission frame (2) and a connecting installation point of the fixing frame (1), so that the transmission frame (2) is connected with the fixing frame (1) in a structural balance mode.

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