阅读说明：本技术 一种林木种子筛选装置及其操作方法 (Forest seed screening device and operation method thereof ) 是由 李葵 王耀辉 杨淞 李珂 罗梅 谢梅 于 2021-10-25 设计创作，主要内容包括：本发明公开了一种林木种子筛选装置及其操作方法,具体涉及林木种子筛选技术领域,包括支撑架,所述支撑架的顶部设置有分类筛选机构,所述分类筛选机构与支撑架之间设置有与分类筛选机构相对应的导料组件,所述支撑架的底部设置有自动接料机构。本发明通过各个结构的相应配合使用,方便工作人员持续导料,同时以推送的方式进行导料,能够有效的避免种子在进行导料时破碎,增加后续种子筛选质量,对种子传送的过程中实现筛选工作,同时会将种子内的残次品以及杂质分类剔除,无需工作人员手动筛选,增加种子的筛选质量,方便工作人员后续对筛选出的残次品以及杂质进行处理,无需设备停机整顿,提高种子的筛选效率。(The invention discloses a forest seed screening device and an operation method thereof, and particularly relates to the technical field of forest seed screening. According to the invention, through the corresponding matching use of each structure, the continuous material guiding of workers is facilitated, and the material guiding is carried out in a pushing mode, so that the seeds can be effectively prevented from being broken during the material guiding, the subsequent seed screening quality is increased, the screening work is realized in the seed conveying process, defective products and impurities in the seeds can be classified and removed, the manual screening of the workers is not required, the screening quality of the seeds is increased, the subsequent treatment of the screened defective products and impurities by the workers is facilitated, the equipment is not required to be stopped, and the seed screening efficiency is improved.)

1. The utility model provides a forest seed sieving mechanism which characterized in that: the automatic material receiving device comprises a support frame (1), wherein a classifying and screening mechanism is arranged at the top of the support frame (1), a material guide assembly corresponding to the classifying and screening mechanism is arranged between the classifying and screening mechanism and the support frame (1), and an automatic material receiving mechanism is arranged at the bottom of the support frame (1);

the classifying and screening mechanism comprises a screening cylinder (3) arranged at the top of the support frame (1), a first screening chamber (4) is arranged on the screening cylinder (3), a second screening chamber (5) is arranged on one side of the first screening chamber (4), and a third screening chamber (6) is arranged on one side of the second screening chamber (5);

the material guide assembly comprises a material distribution box (2) matched with the screening cylinder (3), the material distribution box (2) is arranged at the top of the support frame (1), a first discharge port (13) is arranged inside the material distribution box (2), a second discharge port (14) is arranged on one side of the first discharge port (13), a third discharge port (15) is arranged on one side of the second discharge port (14), and a fourth discharge port (16) is arranged on one side of the third discharge port (15);

the automatic material receiving mechanism comprises a supporting frame (17) arranged at the bottom of the supporting frame (1), and a material receiving transmission assembly is arranged in the middle of the supporting frame (17).

2. The forest seed screening device of claim 1, wherein: the top of support frame (1) and the both sides that are located screening drum (3) all are provided with mount pad (7), two one side of one of them of mount pad (7) is provided with driving motor (11), the output of driving motor (11) is provided with strengthens back shaft (12), the one end of strengthening back shaft (12) runs through mount pad (7) to be connected with inner wall one side of screening drum (3).

3. The forest seed screening device of claim 2, wherein: the surface of the reinforcing support shaft (12) is provided with a plurality of support ribs in the screening cylinder (3), the support ribs correspond to the first screening chamber (4), the second screening chamber (5) and the third screening chamber (6) respectively, and the screening cylinder (3) is movably connected with the mounting seat (7).

4. The forest seed screening device of claim 1, wherein: the one end of filter screen cylinder (3) and the top that is located support frame (1) are provided with guide box (8), surface one side of guide box (8) is provided with guide motor (9), the output of guide motor (9) just is located guide box (8) and is provided with and leads material case (8) assorted guide bar (10), the one end of guide box (8) extends to in filter screen cylinder (3), the one end that guide box (8) are located filter screen cylinder (3) is run through and is seted up the bin outlet, the one end that guide box (8) were kept away from in filter screen cylinder (3) is provided with the discharge gate.

5. The forest seed screening device of claim 1, wherein: connect material drive assembly including setting up first slide (20) and second slide (21) at carriage (17) middle part, the spout has all been seted up to carriage (17) inner wall both sides, first slide (20) and second slide (21) all with spout sliding connection.

6. The forest seed screening device of claim 1, wherein: connect material transmission assembly still including setting up transmission motor (18) in carriage (17) one end, the output of transmission motor (18) is provided with just reverse screw rod (19), the one end of just reverse screw rod (19) runs through carriage (17), first slide (20) and second slide (21) in proper order to extend to carriage (17) inner wall one side, first slide (20) and second slide (21) respectively with just reverse screw rod (19) both ends threaded connection.

7. The forest seed screening device of claim 5, wherein: the top of first slide (20) and second slide (21) all is provided with spacing frame (23), two all be provided with spacing frame (23) assorted material receiving barrel (22) in spacing frame (23), the middle part of first slide (20) and second slide (21) just is located carriage (17) and all is provided with guiding axle (24).

8. A method for screening seeds by using the forest seed screening apparatus of any one of claims 1 to 7, wherein: the method comprises the following steps:

step one; the method comprises the following steps that firstly, the worker places seeds of a wood forest in a material guiding box (8), then a material guiding motor (9) is started, the output end of the material guiding motor (9) rotates and drives a material guiding rod (10) to rotate, the material guiding rod (10) can drive the seeds in the material guiding box (8) to move in the rotating process, and the seeds can fall into a screening cylinder (3) through a discharge hole formed in one end, located in the screening cylinder (3), of the material guiding box (8);

step two; when seeds are guided into the screening cylinder (3) through the material guide box (8), the driving motor (11) is started, the output end of the driving motor (11) rotates and drives the reinforcing support shaft (12) to rotate, the reinforcing support shaft (12) can drive the screening cylinder (3) to rotate in the rotating process, the seeds in the screening cylinder (3) can rub against the inner wall of the screening cylinder (3) in the rotating process of the screening cylinder (3), and the seeds can roll in the screening cylinder (3) due to the friction force generated when the screening cylinder (3) rotates and gradually approach to one end, far away from the material guide box (8), of the screening cylinder (3);

step three; when the seeds in the screening cylinder (3) move, the seeds firstly pass through the third screening chamber (6), impurities mixed in the seeds are firstly screened with the seeds through the third screening chamber (6) in the first step, then the screening cylinder (3) continuously rotates, the screening cylinder (3) is screened in the second step through the second screening chamber (5), then the seeds in the screening cylinder (3) are screened again through the first screening chamber (4), and finally the seeds are gathered at one end of the screening cylinder (3) far away from the material guide box (8);

step four; in the process that seeds are screened by the first screening chamber (4), the second screening chamber (5) and the third screening chamber (6), the seeds screened by the third screening chamber (6) can fall into the material receiving barrel (22) which the top of the limiting frame (23) belongs to, the seeds screened by the second screening chamber (5) can be discharged through the third discharge port (15), the seeds screened by the first screening chamber (4) can fall into the material receiving barrel (22) which the top of the first sliding plate (20), and then the seeds in the screening barrel (3) can be discharged through the first discharge port (13) through the discharge port;

step five; seeds falling into the two material receiving barrels (22) are started through the transmission motor (18) to drive the forward and reverse rotation screw (19) to rotate, and when the forward and reverse rotation screw (19) rotates, the first sliding plate (20) and the second sliding plate (21) can respectively move synchronously and oppositely along the thread guides at the two ends of the forward and reverse rotation screw (19), so that the material receiving barrels (22) at the tops of the first sliding plate (20) and the second sliding plate (21) can respectively move to the two ends of the support frame (1);

step six; then, the worker takes out the material receiving barrel (22) in the limiting frame (23) and places the material receiving barrel (22) without seeds, so that the continuous operation of the equipment is facilitated.

Technical Field

The invention relates to the technical field of forest seed screening, in particular to a forest seed screening device and an operation method thereof.

Background

The forest seeds are the reproductive organs of forest trees, and are generally classified into real seeds, fruits, parts of seeds, seeds formed by apomixis and the like according to the understanding of botany.

When screening different kinds of woods seed, the seed often gathers together in a large number, at the in-process of screening, needs sort the screening with the seed of variation in size in proper order to in the seed that gathers together, can be intermingled and have many dead leaves and wastrel, if adopt the manual work to get rid of these impurity, not only can consume a large amount of manpowers, reduce the screening quality of seed simultaneously.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides a forest seed screening device and an operation method thereof, which can be used for increasing the screening quality of seeds without manual screening by workers, facilitating the subsequent treatment of the screened defective products and impurities by the workers, improving the screening efficiency of the seeds without stopping equipment, and solving the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a forest seed screening device comprises a support frame, wherein a classification screening mechanism is arranged at the top of the support frame, a material guide assembly corresponding to the classification screening mechanism is arranged between the classification screening mechanism and the support frame, and an automatic material receiving mechanism is arranged at the bottom of the support frame;

the classified screening mechanism comprises a screening cylinder arranged at the top of the support frame, a first screening chamber is arranged on the screening cylinder, a second screening chamber is arranged on one side of the first screening chamber, and a third screening chamber is arranged on one side of the second screening chamber;

the material guide assembly comprises a material distribution box matched with the screening cylinder, the material distribution box is arranged at the top of the supporting frame, a first discharge port is arranged in the material distribution box, a second discharge port is arranged on one side of the first discharge port, a third discharge port is arranged on one side of the second discharge port, and a fourth discharge port is arranged on one side of the third discharge port;

the automatic material receiving mechanism comprises a supporting frame arranged at the bottom of the supporting frame, and a material receiving transmission assembly is arranged in the middle of the supporting frame.

In a preferred embodiment, the top of the supporting frame and the two sides of the screening cylinder are both provided with mounting seats, one side of one of the two mounting seats is provided with a driving motor, the output end of the driving motor is provided with a reinforcing support shaft, and one end of the reinforcing support shaft penetrates through the mounting seats and is connected with one side of the inner wall of the screening cylinder.

In a preferred embodiment, a plurality of supporting ribs are arranged on the surface of the reinforcing supporting shaft and inside the screening drum, the plurality of supporting ribs correspond to the first screening chamber, the second screening chamber and the third screening chamber respectively, and the screening drum is movably connected with the mounting seat.

In a preferred embodiment, the one end of sieve separator and the top that is located the support frame are provided with the guide case, surface one side of guide case is provided with the guide motor, the output of guide motor just is located the guide incasement and is provided with the guide pole that matches with the guide case, the one end of guide case extends to in the sieve separator, the one end that the guide case is located the sieve separator runs through and has seted up the bin outlet, the one end that the guide case was kept away from to the sieve separator is provided with the discharge gate.

In a preferred embodiment, the material receiving transmission assembly comprises a first sliding plate and a second sliding plate which are arranged in the middle of a supporting frame, sliding grooves are formed in two sides of the inner wall of the supporting frame, and the first sliding plate and the second sliding plate are both in sliding connection with the sliding grooves.

In a preferred embodiment, the material receiving transmission assembly further comprises a transmission motor arranged at one end of the support frame, a forward and reverse rotation screw rod is arranged at an output end of the transmission motor, one end of the forward and reverse rotation screw rod sequentially penetrates through the support frame, the first sliding plate and the second sliding plate and extends to one side of the inner wall of the support frame, and the first sliding plate and the second sliding plate are respectively in threaded connection with two ends of the forward and reverse rotation screw rod.

In a preferred embodiment, the top of the first sliding plate and the second sliding plate are both provided with a limiting frame, the limiting frames are both provided with a material receiving barrel matched with the limiting frame, and the middle parts of the first sliding plate and the second sliding plate are both provided with a guide shaft in the supporting frame.

An operating method of a forest seed screening device comprises the following steps:

step one; the method comprises the following steps that firstly, the worker places seeds of a wood forest in a material guide box, then starts a material guide motor, the output end of the material guide motor rotates and drives a material guide rod to rotate, the material guide rod can drive the seeds in the material guide box to move in the rotating process, and the seeds can fall into a screening cylinder through a discharge hole formed in one end, located in the screening cylinder, of the material guide box;

step two; when the seeds are guided into the screening cylinder through the material guide box, the driving motor is started, the output end of the driving motor rotates and drives the reinforcing support shaft to rotate, the reinforcing support shaft drives the screening cylinder to rotate in the rotating process, the seeds in the screening cylinder rub against the inner wall of the screening cylinder in the rotating process of the screening cylinder, and the seeds roll in the screening cylinder due to the friction force generated in the rotation of the screening cylinder and approach to one end, far away from the material guide box, of the screening cylinder slowly;

step three; when the seeds in the screening cylinder move, the seeds firstly pass through the third screening chamber, impurities mixed in the seeds pass through the third screening chamber and are firstly screened with the seeds, then the screening cylinder continuously rotates, the screening cylinder passes through the second screening chamber to be screened in the second step, then the seeds in the screening cylinder are screened again through the first screening chamber, and finally the seeds are gathered at one end of the screening cylinder, which is far away from the material guide box;

step four; in the process that seeds are screened by the first screening chamber, the second screening chamber and the third screening chamber, the seeds screened by the third screening chamber fall into the material receiving cylinder to which the top of the limiting frame belongs, the seeds screened by the second screening chamber are discharged through the third discharge port, the seeds screened by the first screening chamber fall into the material receiving cylinder at the top of the first sliding plate, and then the seeds in the screening cylinder are discharged through the first discharge port through the discharge port;

step five; the seeds falling into the two material receiving barrels are started by the transmission motor to drive the forward and reverse rotating screw rods to rotate, and when the forward and reverse rotating screw rods rotate, the first sliding plate and the second sliding plate respectively move synchronously and oppositely along the thread guides at the two ends of the forward and reverse rotating screw rods, so that the material receiving barrels at the tops of the first sliding plate and the second sliding plate can respectively move to the two ends of the supporting frame;

step six; then the staff takes out the material receiving barrel in the limiting frame and places the material receiving barrel without seeds, so that the continuous operation of the equipment is facilitated.

The invention has the technical effects and advantages that:

1. according to the invention, firstly, the output end of the material guide motor rotates and drives the material guide rod to rotate, the material guide rod drives seeds in the material guide box to move through the mutual matching of the surface section of the material guide rod and the inner wall of the material guide box in the rotating process, so that the seeds can fall into the screening cylinder through the discharge port, the continuous material guide of workers is facilitated, meanwhile, the mutual matching of the material guide rod and the material guide box is realized, and the material guide is carried out in a pushing mode, so that the seeds can be effectively prevented from being crushed during the material guide, and the screening quality of the subsequent seeds is improved;

2. according to the invention, the seeds in the screening cylinder are conveyed in a rotating mode, and when the seeds are conveyed, the seeds pass through the third screening chamber, the second screening chamber and the first screening chamber to complete multi-level screening of the seeds, and pass through the third screening chamber and the material receiving cylinder which belongs to the top of the limiting frame, the second screening chamber and the third discharge port, and the first screening chamber and the material receiving cylinder which is arranged at the top of the first sliding plate and the first discharge port of the discharge port, so that the screening work is realized in the conveying process of the seeds, defective goods and impurities in the seeds can be classified and removed, the manual screening by workers is not needed, and the screening quality of the seeds is improved;

3. when the forward and reverse rotation screw rod rotates, the first sliding plate and the second sliding plate respectively move synchronously and oppositely along the thread guide at the two ends of the forward and reverse rotation screw rod, so that the material receiving barrels at the tops of the first sliding plate and the second sliding plate can be respectively moved to the two ends of the supporting frame, the selected defective products and impurities can be conveniently processed by workers in the follow-up process, the equipment does not need to be stopped for finishing, and the screening efficiency of seeds is improved;

to sum up, through the corresponding cooperation use of each structure, make things convenient for the staff to last the guide, carry out the guide with the mode of propelling movement simultaneously, can effectually avoid the seed to be broken when carrying out the guide, increase follow-up seed screening quality, realize screening work to the in-process of seed conveying, can reject wastrel and impurity classification in the seed simultaneously, need not staff's manual screening, increase the screening quality of seed, make things convenient for the staff follow-up wastrel and impurity of selecting to handle, need not equipment to shut down the arrangement, improve the screening efficiency of seed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a side view of the overall structure of the present invention.

Figure 3 is a front view of a screen cylinder of the present invention.

FIG. 4 is a top view of the distribution box, the material guiding box and the material guiding rod of the present invention.

Fig. 5 is a front view of the stand of the present invention.

Fig. 6 is a front view of the distribution box of the present invention.

Fig. 7 is a front view of the automatic receiving mechanism of the invention.

The reference signs are: 1. a support frame; 2. a material distributing box; 3. a screening cylinder; 4. a first screening chamber; 5. a second screening chamber; 6. a third screening chamber; 7. a mounting seat; 8. a material guiding box; 9. a material guiding motor; 10. a material guiding rod; 11. a drive motor; 12. reinforcing the support shaft; 13. a first discharge port; 14. a second discharge opening; 15. a third discharge outlet; 16. a fourth discharge outlet; 17. a support frame; 18. a drive motor; 19. a screw rod is rotated forward and backward; 20. a first slide plate; 21. a second slide plate; 22. a material receiving barrel; 23. a limiting frame; 24. and a guide shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The forest seed screening device shown in the attached figures 1-7 comprises a support frame 1, wherein a classification screening mechanism is arranged at the top of the support frame 1, a material guide assembly corresponding to the classification screening mechanism is arranged between the classification screening mechanism and the support frame 1, and an automatic material receiving mechanism is arranged at the bottom of the support frame 1;

the classifying and screening mechanism comprises a screening cylinder 3 arranged at the top of the support frame 1, a first screening chamber 4 is arranged on the screening cylinder 3, a second screening chamber 5 is arranged on one side of the first screening chamber 4, and a third screening chamber 6 is arranged on one side of the second screening chamber 5;

the material guiding assembly comprises a material distributing box 2 matched with the screening cylinder 3, the material distributing box 2 is arranged at the top of the supporting frame 1, a first discharge port 13 is arranged inside the material distributing box 2, a second discharge port 14 is arranged on one side of the first discharge port 13, a third discharge port 15 is arranged on one side of the second discharge port 14, and a fourth discharge port 16 is arranged on one side of the third discharge port 15;

the automatic material receiving mechanism comprises a supporting frame 17 arranged at the bottom of the supporting frame 1, and a material receiving transmission assembly is arranged in the middle of the supporting frame 17.

Referring to fig. 5, the top of support frame 1 and the both sides that are located filter cylinder 3 all are provided with mount pad 7, one side of one of two mount pads 7 is provided with driving motor 11, driving motor 11's output is provided with strengthens back shaft 12, strengthen back shaft 12's one end and run through mount pad 7, and be connected with inner wall one side of filter cylinder 3, mount pad 7 can play the effect of support, make things convenient for filter cylinder 3 to install, stability when increasing filter cylinder 3 rotation, driving motor 11 then can play driven effect, when driving motor 11 starts, it is rotatory to strengthen back shaft 12, thereby it is rotatory to drive filter cylinder 3, conveniently filter the seed.

Referring to fig. 3, a plurality of supporting ribs are arranged on the surface of the reinforcing support shaft 12 and inside the screening drum 3, the supporting ribs correspond to the first screening chamber 4, the second screening chamber 5 and the third screening chamber 6 respectively, the screening drum 3 is movably connected with the mounting seat 7, the supporting ribs are matched with the reinforcing support shaft 12, the stability of the reinforcing support shaft 12 and the screening drum 3 during installation is improved, the bearing capacity of the reinforcing support shaft 12 is improved, and the screening drum 3 is prevented from shifting during rotation.

Referring to the attached drawings 1, 2 and 4, one end of the screening cylinder 3 and the top of the support frame 1 are provided with a material guiding box 8, one side of the surface of the material guiding box 8 is provided with a material guiding motor 9, the output end of the material guiding motor 9 is arranged in the material guiding box 8 and is provided with a material guiding rod 10 matched with the material guiding box 8, one end of the material guiding box 8 extends into the screening cylinder 3, one end of the material guiding box 8, which is arranged in the screening cylinder 3, is penetrated through and provided with a material discharging opening, one end of the screening cylinder 3, which is far away from the material guiding box 8, is provided with a material discharging opening, the material guiding box 8 can play a role of guiding, when the material guiding motor 9 is started, the material guiding rod 10 can be driven to rotate, and through the mutual matching of the material guiding rod 10 and the inner wall of the material guiding box 8, the material in the material guiding box 8 is conveyed into the screening cylinder 3, and convenience is achieved.

Referring to fig. 7, connect material transmission assembly including setting up first slide 20 and the second slide 21 in carriage 17 middle part, the spout has all been seted up to carriage 17 inner wall both sides, first slide 20 and second slide 21 all with spout sliding connection, the spout can play direction and spacing effect, makes things convenient for first slide 20 and second slide 21 along the direction displacement of spout, facilitates the use.

Referring to fig. 7, the material receiving transmission assembly further comprises a transmission motor 18 arranged at one end of the supporting frame 17, a forward and reverse rotation screw 19 is arranged at an output end of the transmission motor 18, one end of the forward and reverse rotation screw 19 sequentially penetrates through the supporting frame 17, the first sliding plate 20 and the second sliding plate 21 and extends to one side of the inner wall of the supporting frame 17, the first sliding plate 20 and the second sliding plate 21 are respectively in threaded connection with two ends of the forward and reverse rotation screw 19, the transmission motor 18 can drive the forward and reverse rotation screw 19 to rotate when being started, and the first sliding plate 20 and the second sliding plate 21 can respectively move oppositely along the threads at two ends of the forward and reverse rotation screw 19, so that material receiving is facilitated.

Referring to fig. 7, the top of the first sliding plate 20 and the top of the second sliding plate 21 are provided with limiting frames 23, the two limiting frames 23 are provided with limiting material receiving barrels 22 matched with the limiting frames 23, the middle parts of the first sliding plate 20 and the second sliding plate 21 are provided with guide shafts 24 in the supporting frames 17, the limiting frames 23 can play a limiting role, the stability of the material receiving barrels 22 during placement is improved, and meanwhile, workers can replace the material receiving barrels 22 according to actual needs.

An operating method of a forest seed screening device comprises the following steps:

step one; firstly, a worker places seeds of a wood forest in a material guiding box 8, then starts a material guiding motor 9, the output end of the material guiding motor 9 rotates and drives a material guiding rod 10 to rotate, the material guiding rod 10 can drive the seeds in the material guiding box 8 to move in the rotating process, and the seeds can fall into the screening cylinder 3 through a discharge hole formed in one end, located in the screening cylinder 3, of the material guiding box 8;

step two; when the seeds are guided into the screening cylinder 3 through the material guide box 8, the driving motor 11 is started, the output end of the driving motor 11 rotates and drives the reinforcing support shaft 12 to rotate, the reinforcing support shaft 12 can drive the screening cylinder 3 to rotate in the rotating process, the seeds in the screening cylinder 3 can rub against the inner wall of the screening cylinder 3 in the rotating process of the screening cylinder 3, and the seeds can roll in the screening cylinder 3 due to the friction force generated when the screening cylinder 3 rotates and gradually approach to one end, far away from the material guide box 8, of the screening cylinder 3;

step three; when the seeds in the screening drum 3 move, the seeds firstly pass through the third screening chamber 6, impurities mixed in the seeds pass through the third screening chamber 6 and are firstly screened with the seeds, then the screening drum 3 continuously rotates, the screening drum 3 passes through the second screening chamber 5 to be screened, then the seeds in the screening drum 3 are screened again through the first screening chamber 4, and finally the seeds are gathered at one end of the screening drum 3 far away from the material guide box 8;

step four; in the process that seeds are screened by the first screening chamber 4, the second screening chamber 5 and the third screening chamber 6, the seeds screened by the third screening chamber 6 can fall into the material receiving cylinder 22 belonging to the top of the limiting frame 23, the seeds screened by the second screening chamber 5 can be discharged through the third discharge port 15, the seeds screened by the first screening chamber 4 can fall into the material receiving cylinder 22 at the top of the first sliding plate 20, and then the seeds in the screening cylinder 3 can be discharged through the first discharge port 13 through the discharge port;

step five; the seeds falling into the two material receiving barrels 22 are started by the transmission motor 18 to drive the forward and reverse rotation screw rod 19 to rotate, and when the forward and reverse rotation screw rod 19 rotates, the first sliding plate 20 and the second sliding plate 21 respectively move synchronously and oppositely along the thread guides at the two ends of the forward and reverse rotation screw rod 19, so that the material receiving barrels 22 at the tops of the first sliding plate 20 and the second sliding plate 21 respectively move to the two ends of the support frame 1;

step six; then, the worker takes out the material receiving barrel 22 in the limiting frame 23 and places the material receiving barrel 22 without seeds, so that the continuous operation of the equipment is facilitated.

The working principle of the invention is as follows: firstly, a worker places seeds of a wood forest in a material guiding box 8, then starts a material guiding motor 9, the output end of the material guiding motor 9 rotates and drives a material guiding rod 10 to rotate, the material guiding rod 10 can drive the seeds in the material guiding box 8 to move in the rotating process, and the seeds can fall into the screening cylinder 3 through a discharge hole formed in one end, located in the screening cylinder 3, of the material guiding box 8;

when the seed is through leading-in screening cylinder 3 of workbin 8 in, play driving motor 11, driving motor 11's output is rotatory and the drive is strengthened back shaft 12 and is rotatory, and strengthen back shaft 12 and can drive screening cylinder 3 rotatory at rotatory in-process, and screening cylinder 3 is at rotatory in-process, the seed in screening cylinder 3 can rub mutually with the inner wall of screening cylinder 3, and the seed then can be because the frictional force reason when screening cylinder 3 is rotatory rolls in screening cylinder 3 and be close to slowly to the one end that keeps away from workbin 8 to screening cylinder 3

When the seeds in the screening drum 3 move, the seeds firstly pass through the third screening chamber 6, impurities mixed in the seeds pass through the third screening chamber 6 and are firstly screened with the seeds, then the screening drum 3 continuously rotates, the screening drum 3 passes through the second screening chamber 5 to be screened, then the seeds in the screening drum 3 are screened again through the first screening chamber 4, and finally the seeds are gathered at one end of the screening drum 3 far away from the material guide box 8;

in the process that seeds are screened by the first screening chamber 4, the second screening chamber 5 and the third screening chamber 6, the seeds screened by the third screening chamber 6 can fall into the material receiving cylinder 22 belonging to the top of the limiting frame 23, the seeds screened by the second screening chamber 5 can be discharged through the third discharge port 15, the seeds screened by the first screening chamber 4 can fall into the material receiving cylinder 22 at the top of the first sliding plate 20, then the seeds in the screening cylinder 3 can be discharged through the first discharge port 13 through the discharge port, and the seeds falling into the two material receiving cylinders 22 are started through the transmission motor 18 to drive the forward and reverse rotation screw rod 19 to rotate;

when the forward and reverse rotation screw rod 19 rotates, the first sliding plate 20 and the second sliding plate 21 respectively move in opposite directions along the thread guides at the two ends of the forward and reverse rotation screw rod 19, so that the material receiving barrels 22 at the tops of the first sliding plate 20 and the second sliding plate 21 can be respectively moved to the two ends of the support frame 1, then the worker takes out the material receiving barrel 22 in the limiting frame 23, and then places the material receiving barrel 22 without seeds, thereby facilitating the continuous operation of the equipment.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.