CN108636802B

CN108636802B - Rice seed selection device

Info

Publication number: CN108636802B
Application number: CN201810387515.XA
Authority: CN
Inventors: 夏可刚
Original assignee: Fenggang Hongfa Rice Co ltd
Current assignee: Fenggang Hongfa Rice Co ltd
Priority date: 2018-04-26
Filing date: 2018-04-26
Publication date: 2021-04-02
Anticipated expiration: 2038-04-26
Also published as: CN108636802A

Abstract

The application discloses a rice seed selection device in the technical field of grain screening, which comprises a seed selection box, wherein a quantitative feeding mechanism, a primary selection mechanism and a re-selection mechanism are arranged in the seed selection box, and the primary selection mechanism comprises a fan, a support plate and two telescopic support rods; the air inlet, the air outlet and the discharge port are formed in the seed selecting box, the air outlet and the fan are arranged oppositely, the re-selecting mechanism comprises a lower screen and an upper screen below the elastic pad, screen meshes are arranged on the upper screen and the lower screen, the upper screen is fixed on the inner side wall of the seed selecting box, the upper screen is arranged downwards towards the elastic pad in a tilting mode, a connecting rod is arranged on the inner bottom of the seed selecting box, the connecting rod is fixed with the lower screen, the lower screen is arranged below the upper screen, the tilting direction of the lower screen is opposite to that of the upper screen, and the downward end of the lower screen is communicated with the. The problem that prior art can not clear away the flat millet in the corn completely is solved to this scheme.

Description

Rice seed selection device

Technical Field

The invention relates to the technical field of grain screening, in particular to a rice seed selection device.

Background

At present, farmers need to perform seed selection work on rice seeds before sowing, and need to perform classification selection according to the sizes of the seeds, but the rice seeds are different in quality, a lot of shriveled grains are often mixed in the rice seeds, if the shriveled grains are mixed in the rice seeds for sowing, the shriveled grains can not germinate, so that the seeds need to be replenished in the later period, the workload for manually selecting the shriveled grains is very large, and the efficiency is low; the prior art has the sieve separator to filter categorised, current sieve separator includes the shale shaker and is used for making the shale shaker vibration from top to bottom or the power unit of side-to-side motion, at the in-process that the shale shaker drove the seed motion, impurity passes through the sieve mesh and the seed separation of shale shaker, but the movement track of the seed on the shale shaker is all roughly the same, and because inertial effect, the seed on the screen cloth is piled up easily, the seed can not the homodisperse on the screen cloth, and then block up the sieve mesh easily, the screening effect of seed is not ideal.

The separation of seeds and shrivelled grains by air flow, also known as air separation, is based on the difference in aerodynamic properties between grains and shrivelled grains. However, in such a method, wind blown by the fan is simply guided to the rice, some flat rice can be separated from the rice under the action of wind, but some flat rice is difficult to blow away due to being mixed in the rice, and the screening effect is poor.

Disclosure of Invention

The invention aims to provide a rice seed selection device to solve the problem that the prior art cannot completely remove the shrunken rice.

In order to solve the technical problems, the invention provides the following technical scheme: a rice seed selection device, which comprises a seed selection box, wherein a connecting rod is arranged at the inner bottom of the seed selection box, a quantitative feeding mechanism, a primary selection mechanism and a re-selection mechanism are arranged in the seed selection box, the primary selection mechanism comprises a fan, a support plate and two telescopic support rods, the supporting plate and the two supporting rods are vertically fixed at the bottom of the seed selecting box, an elastic cushion for catching seeds is arranged between the supporting plate and the supporting rods, the bottom of the elastic pad is provided with a first electromagnet which is electrically connected with a first circuit used for controlling the first electromagnet to be electrified, a second electromagnet opposite to the second electromagnet is arranged at the inner bottom of the seed selection box, the second electromagnet is electrically connected with a second circuit used for controlling the current direction of the second electromagnet after being electrified, and the fan is fixed on the side wall in the seed selection box and positioned above the elastic pad; the utility model discloses a screening machine, including seed selection case, air outlet, lower screen cloth, last screen cloth and lower screen cloth, be equipped with air intake, air outlet and discharge gate on the seed selection case, the air outlet sets up with the fan relatively, reselect the mechanism and include the screen cloth and be located the lower screen cloth of screen cloth below, it fixes on the inside wall of seed selection case to go up the screen cloth, the screen cloth is fixed on the connecting rod down, go up the screen cloth and all incline downwards to set up and opposite direction with lower screen cloth, the least significant end of going up the screen cloth is located the top.

The working principle of the invention is as follows: when the scheme is used for screening the rice seeds, the rice seeds are poured into the quantitative feeding mechanism in the seed selection box, the quantity of the rice seeds coming out of the quantitative feeding mechanism is constant, so that the rice seeds can not exceed the load of the screening mechanism during screening, and the screening is not clean, after the rice seeds enter the elastic pad from the quantitative feeding mechanism, the elastic pad is supported by the supporting plate and the two supporting rods, because the bottom of the elastic pad is provided with the first electromagnet, the first electromagnet is electrically connected with the first circuit for controlling the electrification of the first electromagnet, the inner bottom of the seed selection box is also provided with the second electromagnet opposite to the second electromagnet, the second electromagnet is electrically connected with the second circuit for controlling the current direction after the electrification of the second electromagnet, so that the second circuit and the first circuit are both connected, at the moment, the opposite two poles of the first electromagnet and the second electromagnet have the same polarity, will produce a repulsion force, the first electro-magnet will move upwards suddenly, thus make the corn seed on the cushion will be raised, because the cushion is fixed on backup pad and bracing piece again, and change the current direction in the second circuit when the cushion begins to descend for the first time, at this moment the relative two poles of the earth polarity of first electro-magnet and second electro-magnet are different, will produce the suction, under the dual function of suction and self gravity, the speed that the cushion descends is faster than the corn seed, the cushion is sucked rapidly, so the cushion can not rock up and down because of inertial reason, and the corn seed is still detained in the air because of inertial effect at this moment, so the space between corn seed and the cushion will be enlarged, help the abundant screening of the corn seed, in the course that the corn seed is raised upwards, because of the difference of full seed and flat corn self gravity, so overcome the work that self gravity did not the same yet, so the height that full seed was raised will be lower than the height that flat millet was raised, full seed and flat millet between the distance can grow gradually, start the fan and begin work, the wind that the fan blew out will blow flat millet to the air outlet and break away from, and full seed can be because of self weight's reason, be difficult to blow away, full seed and flat millet will be distinguished like this, after screening several times like this repeatedly, control first circuit and second circuit outage, the bracing piece is controlled to shrink downwards again, the elasticity pad will slope gradually, the seed will get into on the screen gradually, because it is downward that the last screen cloth inclines, so the seed will pass through last screen cloth and enter on the lower screen cloth again, in this process, tiny mud grain and the dust that mix with in full seed will separate with full seed through the sieve mesh of screen cloth, the seeds passing through the discharge hole are full without flat grains.

The invention has the beneficial effects that: the motion trend of cushion has the abruptness in this scheme, so clearance between cushion and the seed will the grow, distance between flat millet and the full seed will be enough big like this, full seed just can not play the effect of blockking to flat millet in the selection by winnowing, and the motion of prior art shale shaker has a continuity, the seed will have the trend of upward movement under inertial influence, but the clearance between seed and the shale shaker is very little, the seed pastes almost on the shale shaker, full seed will play the effect of blockking to flat millet in the selection by winnowing, compare prior art, the effect that flat millet was got rid of to this scheme is better.

The optimization of the basic technical scheme is as follows:

further, the fan overcoat is equipped with out the tuber pipe, the position relative with the cushion on the wall of play tuber pipe is equipped with the dust absorption mouth, it connects on the inside wall of seed selection case to go out tuber pipe one end, the other end and the air outlet intercommunication of going out the tuber pipe. Set up out the tuber pipe box like this on the fan for the wind that the fan blew out is more concentrated, blows away flat millet through the air outlet more easily, and can not blow flat millet everywhere all be.

Further, the air outlet is provided with a collecting bag for collecting the shrivelled grains. The arrangement of the dust collection bag can facilitate the collection of the blown-out shriveled grains.

Further, quantitative feed mechanism includes feeding storehouse and the inlet pipe that both ends were sealed, the bottom in feeding storehouse is equipped with the downward discharge channel of slope, discharge channel and inlet pipe intercommunication, the top in the inlet pipe is equipped with the spring, the one end that the inlet pipe top was kept away from to the spring is connected with quantitative chamber, quantitative chamber includes the hang plate, iron plate and the dead lever that slopes down, go up the hang plate and iron plate that slopes down all with the inner wall sliding connection of inlet pipe, the dead lever is located between hang plate and the hang plate that slopes down, be equipped with the discharging pipe of slope on the bottom lateral wall of inlet pipe, the discharging pipe is established directly over the cushion, the incline direction of going up the hang plate, the incline direction of iron plate that slopes down and the incline direction of discharging pipe all are the same with discharge channel's incline direction. The seed of treating the screening enters into discharging channel from the feeding storehouse, will enter into the ration chamber in the inlet tube, and at the beginning, the elasticity of spring just can make ration chamber and discharging channel intercommunication, and the spring does not take place deformation this moment, fills the seed back in the ration chamber, and the elasticity of spring is not enough to support the gravity in ration chamber and seed, moves down discharging pipe department, and the seed will enter into on the elastic pad through the discharging pipe.

Furthermore, one end of the upper inclined plate, which is close to the discharge channel, is provided with a baffle plate for blocking the discharge channel. The ration chamber is at the in-process that descends, and the seed can enter into the higher authority in ration chamber from discharging channel, and after having set up the baffle, just avoided the seed to get into the waste that causes above the ration chamber.

Further, the bottom of inlet pipe is equipped with the third electro-magnet, the third electro-magnet electricity is connected with and is used for controlling the third circuit that the third electro-magnet circular telegram. When the quantitative cavity descends, the third electromagnet is controlled to be electrified, the third electromagnet can suck the downward-inclined iron plate, and then the time for the seeds in the quantitative cavity to enter the discharge pipe is prolonged.

Drawings

FIG. 1 is a schematic view of a rice seed selection apparatus according to the present invention;

FIG. 2 is a schematic mechanism diagram of the air outlet pipe in FIG. 1;

fig. 3 is a schematic diagram of a second circuit in fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a feeding bin 1, a spring 2, a baffle 3, a discharge channel 4, an upper inclined plate 5, a fixed rod 6, a lower inclined iron plate 7, a feeding pipe 8, a third electromagnet 9, a discharging pipe 10, an air outlet 11, an elastic pad 12, a first electromagnet 13, a supporting plate 14, a seed selection box 15, a supporting rod 16, an upper sieve 17, a lower sieve 18, a discharge hole 19, a second electromagnet 20, a fan 21, an air outlet pipe 22 and a dust collection port 23.

The embodiment is substantially as shown in fig. 1, 2 and 3: the specific implementation process is as follows: a rice seed selection device comprises a seed selection box 15, a quantitative feeding mechanism, a primary selection mechanism and a re-selection mechanism are arranged in the seed selection box 15, the primary selection mechanism comprises a fan 21, a support plate 14 and two telescopic support rods 16, the support rods 16 are telescopic, which is a common technical means and is not repeated herein, the support plate 14 and the two support rods 16 are vertically fixed at the bottom of the seed selection box 15, an elastic cushion 12 for receiving seeds is arranged between the support plate 14 and the support rods 16, a first electromagnet 13 is arranged at the bottom of the elastic cushion 12, the first electromagnet 13 is electrically connected with a first circuit for controlling the electrification of the first electromagnet 13, a second electromagnet 20 opposite to the second electromagnet 20 is arranged at the inner bottom of the seed selection box 15, the second electromagnet 20 is electrically connected with a second circuit for controlling the current direction after the second electromagnet 20 is electrified, the fan 21 is fixed on the side wall in the seed selection box 15, the fan 21 is arranged above the elastic cushion 12, the air outlet pipe 22 is sleeved outside the fan 21, the dust suction port 23 is arranged on the wall of the air outlet pipe 22 opposite to the elastic cushion 12, one end of the air outlet pipe 22 is connected to the inner side wall of the seed selection box 15, and the other end of the air outlet pipe 22 is communicated with the air outlet 11; an air inlet, an air outlet 11 and a discharge port 19 are arranged on the seed selection box 15, the re-selection mechanism comprises a lower screen 18 and an upper screen 17 arranged below the elastic pad 12, both the upper screen 17 and the lower screen 18 are provided with screen holes, the upper screen 17 is fixed on the inner side wall of the seed selection box 15, the upper screen 17 is obliquely and downwards arranged towards the elastic pad 12, the inner bottom of the seed selection box 15 is provided with a connecting rod, the connecting rod is fixed with the lower screen 18, the lower screen 18 is arranged below the upper screen 17, the inclination direction of the lower screen 18 is opposite to that of the upper screen 17, the downward end of the lower screen 18 is communicated with the discharge port 19, the quantitative feeding mechanism comprises a feeding bin 1 and a feeding pipe 8 with two sealed ends, the bottom of the feeding bin 1 is provided with an obliquely and downwards inclined discharging channel 4, the discharging channel 4 is communicated with the feeding pipe 8, the top in the feeding pipe 8 is provided with a spring 2, the bottom of the feeding pipe 8 is provided with a third electromagnet 9, the, the first circuit and the third circuit are common circuits for controlling on-off, are common knowledge in the field of electricians, no longer describe in this embodiment, the one end that inlet pipe 8 top was kept away from to spring 2 is connected with quantitative chamber, quantitative chamber includes hang plate 5, iron plate 7 and dead lever 6 down, hang plate 5 and iron plate 7 down all with inlet pipe 8's inner wall sliding connection, the one end that hang plate 5 is close to discharging channel 4 is equipped with the baffle 3 that is used for blocking discharging channel 4 on going up, the one end and the last hang plate 5 of dead lever 6 are connected, the other end and the iron plate 7 down that hang plate 6 is connected, be equipped with the discharging pipe 10 of slope on the bottom lateral wall of inlet pipe 8, discharging pipe 10 is established directly over cushion 12, the incline direction of going up hang plate 5, the incline direction of iron plate 7 down and the incline direction of discharging pipe 10 all are the same with discharging channel 4's incline direction.

Fig. 3 is a schematic diagram of a second circuit for changing the current direction of the coil of the second electromagnet 20, and only the position of the double-pole double-throw switch needs to be changed when the electromagnet is used.

When the scheme is used for screening the rice seeds, the rice seeds are poured into the feeding bin 1 of the quantitative feeding mechanism in the seed selection box 15 and then enter the quantitative cavity through the discharging channel 4, at the beginning, the elastic force of the spring 2 just enables the quantitative cavity to be communicated with the discharging channel 4, at the moment, the spring 2 does not deform, after the quantitative cavity is filled with the seeds, the elastic force of the spring 2 is not enough to support the gravity of the quantitative cavity and the seeds, the spring moves downwards to the discharging pipe 10, the third electromagnet 9 is started to be electrified, the lower inclined iron plate 7 is sucked by the third electromagnet 9, so that the time for the seeds to enter the elastic cushion 12 through the discharging pipe 10 is more, the space of the quantitative cavity is fixed, the amount of the seeds entering the elastic cushion 12 is certain, the rice seeds can not exceed the load of the screening mechanism during screening, the screening is not clean, and after the rice seeds enter the elastic cushion 12 from the quantitative feeding mechanism, the supporting plate 14 and the two supporting rods 16 support the elastic cushion 12, because the bottom of the elastic cushion 12 is provided with the first electromagnet 13, the first electromagnet 13 is electrically connected with a first circuit for controlling the electrification of the first electromagnet 13, the inner bottom of the seed selection box 15 is also provided with the second electromagnet 20 opposite to the second electromagnet 20, the second electromagnet 20 is electrically connected with a second circuit for controlling the current direction after the second electromagnet 20 is electrified, so that the second circuit and the first circuit are both connected, at the moment, the polarities of the two opposite poles of the first electromagnet 13 and the second electromagnet 20 are the same, a repulsive force is generated, the first electromagnet 13 suddenly moves upwards, the rice seeds on the elastic cushion 12 are lifted, because the elastic cushion 12 is fixed on the supporting plate 14 and the supporting rods 16, and the current direction in the second circuit is changed when the elastic cushion 12 first begins to descend, therefore, the relative polarities of the two poles of the first electromagnet 13 and the second electromagnet 20 are different, suction force is generated, under the double effects of the suction force and the self gravity, the descending speed of the elastic cushion 12 is higher than that of the rice seeds, the elastic cushion 12 is quickly sucked, the elastic cushion 12 cannot shake up and down due to inertia, the rice seeds are still retained in the air due to the inertia, the space between the rice seeds and the elastic cushion 12 is enlarged, full screening of the rice seeds is facilitated, in the process of rising the rice seeds upwards, because of the difference of the self gravity of full seeds and flat seeds, the work of overcoming the self gravity is different, the rising height of the full seeds is lower than that of the flat seeds, the distance between the full seeds and the flat seeds is gradually increased, the fan 21 is started to work, the flat seeds are blown to the air outlet 11 and separated by the wind blown out by the fan 21, and full seed can be because of the reason of self weight, be difficult to blow away, full seed and flat millet will be distinguished like this, after screening several times repeatedly like this, control first circuit and second circuit outage, the bracing piece 16 that again control contracts downwards, cushion 12 will slope gradually, full seed will enter into on the screen cloth 17 gradually, because it is downward to go up the screen cloth 17, so the seed will pass through on screen cloth 17 reentrant screen cloth 18 down, in this process, fine mud grain and dust that mix with in full seed will pass through the sieve mesh and the separation of full seed of screen cloth, the seed that passes through discharge gate 19 is exactly full seed rather than flat millet.

Claims

1. A rice seed selection device is characterized in that: the quantitative feeding mechanism, the primary selection mechanism and the re-selection mechanism are arranged in the seed selection box, the primary selection mechanism comprises a fan, a support plate and two telescopic support rods, the support plate and the two support rods are vertically fixed at the bottom of the seed selection box, an elastic pad for receiving seeds is arranged between the support plate and the support rods, a first electromagnet is arranged at the bottom of the elastic pad and electrically connected with a first circuit for controlling the electrification of the first electromagnet, a second electromagnet opposite to the second electromagnet is arranged at the inner bottom of the seed selection box and electrically connected with a second circuit for controlling the current direction of the second electromagnet after the electrification, and the fan is fixed on the side wall in the seed selection box and located above the elastic pad; the quantitative feeding mechanism comprises a feeding bin and a feeding pipe with two sealed ends, the bottom of the feeding bin is provided with a downward inclined discharging channel, the discharging channel is communicated with the feeding pipe, the top of the feeding pipe is provided with a spring, one end of the spring, which is far away from the top of the feeding pipe, is connected with a quantitative cavity, the quantitative cavity comprises an upper inclined plate, a lower inclined iron plate and a fixed rod, and the upper inclined plate and the lower inclined iron plate are both connected with the inner wall of the feeding pipe in a sliding manner, the fixed rod is positioned between the upper inclined plate and the lower inclined plate, an inclined discharge pipe is arranged on the side wall of the bottom of the feed pipe, the discharge pipe is arranged right above the elastic pad, and the inclined direction of the upper inclined plate, the inclined direction of the lower inclined iron plate and the inclined direction of the discharge pipe are the same as the inclined direction of the discharge channel.

2. The rice seed selection device according to claim 1, wherein: the fan overcoat is equipped with out the tuber pipe, the position relative with the cushion on the wall of play tuber pipe is equipped with the dust absorption mouth, it connects on the inside wall of seed selection case to go out tuber pipe one end, the other end and the air outlet intercommunication of going out the tuber pipe.

3. A rice seed selection apparatus as claimed in claim 2, wherein: the air outlet is provided with a collecting bag for collecting the shrivelled grains.

4. A rice seed selection apparatus as claimed in claim 3, wherein: one end of the upper inclined plate, which is close to the discharging channel, is provided with a baffle plate used for blocking the discharging channel.

5. A rice seed selection apparatus as claimed in claim 4, wherein: the bottom of inlet pipe is equipped with the third electro-magnet, third electro-magnet electricity is connected with and is used for controlling the third circuit of third electro-magnet circular telegram.