CN221789997U - Granule sieve separator for maize seed - Google Patents

Abstract

The utility model relates to a particle screening machine for corn seeds, and belongs to the field of screening technology. The utility model includes a shell, a screen drum, a plurality of annular partition plates, an annular screen, a rotating shaft and a spiral blade. The shell has a feed port. The screen drum is rotatably installed in the shell, and a storage chamber is formed between the screen drum and the shell, and the screen holes of the screen drum are successively increased. A plurality of annular partition plates are installed outside the screen drum, and their outer side surfaces are spaced apart from the inner wall of the shell to divide the storage chamber into a plurality of sub-cavities. One end of the annular screen is connected to the inner side wall of the shell, and the other end is connected to one end of the screen drum. The annular screen has an opening to communicate with the feed port. The rotating shaft is coaxially arranged in the screen drum, and the diameter of the rotating shaft gradually increases from one end close to the feed port to the other end. The spiral blade is arranged outside the rotating shaft, and the rotating shaft rotates to drive the spiral blade to rotate. The utility model effectively solves the technical problems of low screening efficiency and poor screening effect in seed screening in the prior art.

Description

A particle screening machine for corn seeds

Technical Field

The utility model belongs to the technical field of screening, and particularly relates to a particle screening machine for corn seeds.

Background Art

In the production process of agricultural products, seed quality is the key foundation. In order to improve the quality of seeds, it is usually necessary to screen the seeds. Deformed, shriveled or uneven seed sizes are not conducive to cultivation and various problems are likely to occur during the planting process.

In the prior art, the conventional screening device only screens corn seeds by placing them onto a screen in the screening device and using gravity, or generally screens them by blowing air, which results in low screening efficiency and poor screening effect.

Utility Model Content

The utility model provides a particle screening machine for corn seeds, which is used to solve the technical problems of low screening efficiency and poor screening effect in the seed screening process.

In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme: a particle screening machine for corn seeds includes a housing, a screen drum, a plurality of annular partition plates, an annular screen, a rotating shaft and a spiral blade. The housing has a feed port, and the interior of the housing is used for screening corn seeds. The screen drum is rotatably installed in the housing, and a storage chamber is formed between the screen drum and the housing, and the screen holes of the screen drum increase in sequence from one end close to the feed port to the other end. A plurality of annular partition plates are sleeved outside the screen drum, and the inner side surfaces of the plurality of annular partition plates are installed on the outer wall of the screen drum, and the outer side surfaces thereof are spaced apart from the inner wall of the housing, and the plurality of annular partition plates divide the storage chamber into a plurality of sub-cavities. One end of the annular screen is connected to the inner side wall of the housing, and the other end thereof is rotatably connected to one end of the screen drum, and the annular screen has an opening, which is located below the feed port and is connected thereto. The rotating shaft is coaxially arranged in the screen drum, one end of the rotating shaft is rotatably connected to the housing, and the other end thereof is rotatably connected to the screen drum, and the diameter of the rotating shaft gradually increases from one end close to the feed port to the other end. The spiral blades are arranged around the rotating shaft, and the rotation of the rotating shaft drives the spiral blades to rotate, so as to drive the corn seeds to move.

The beneficial effect of a particle screening machine for corn seeds provided by the utility model is that: during use, the feed port is connected to the opening on the annular screen, the corn seeds enter the annular screen through the feed port, and the fine particles (such as gravel or corn leaves) and broken corn seeds are screened out by the annular screen and enter the cavity formed by the annular screen and the shell. The rotating shaft rotates to drive the spiral blade to rotate, and the spiral blade will drive the corn seeds to move to the end away from the feed port, so as to transport the corn seeds from the annular screen to the screen drum, and the diameter of the rotating shaft gradually increases, and the accumulated corn seeds are gradually flattened to prevent the corn seeds from being screened incompletely due to the accumulation and blockage of the corn seeds. The screen drum rotates to drive the corn seeds to move with the screen drum to avoid the corn seeds blocking the screen holes, and at the same time accelerate the corn seeds to pass through the screen holes on the screen drum to speed up the screening rate. In addition, the sieve holes of the sieve cylinder increase in sequence from small to large, and corn seeds with small particle sizes pass through the small sieve holes of the sieve cylinder, and corn seeds with larger particle sizes move forward with the spiral blades and pass through the larger sieve holes of the sieve cylinder. The remaining corn seeds continue to move forward with the spiral blades and pass through the largest sieve holes of the sieve cylinder. The above-mentioned screened corn seeds respectively enter the storage chamber which is divided into multiple sub-cavities by multiple annular partition plates. Specific corn seeds of different particle sizes are located in different sub-cavities to achieve the screening purpose and prevent corn seeds of different particle sizes from being re-mixed after screening.

Optionally, the screen cylinder of the corn seed particle screening machine includes a first sub-screen cylinder, a second sub-screen cylinder and a third sub-screen cylinder. One end of the first sub-screen cylinder is rotatably connected to the end of the annular screen away from the housing. One end of the second sub-screen cylinder is connected to the end of the first sub-screen cylinder away from the annular screen, and the screen hole of the second sub-screen cylinder is larger than the screen hole of the first sub-screen cylinder. One end of the third sub-screen cylinder is connected to the second sub-screen cylinder, and the other end is rotatably connected to the housing, and the screen hole of the third sub-screen cylinder is larger than the screen hole of the second sub-screen cylinder. The first sub-screen cylinder, the second sub-screen cylinder and the third sub-screen cylinder, the three sub-screen cylinders are coaxially arranged and internally connected.

Optionally, the plurality of annular partitions of the corn seed particle screening machine include a first sub-partition, a second sub-partition and a third sub-partition. A first sub-cavity is formed between the first sub-partition, the first sub-screen cylinder and the housing, and a first discharge port connected to the first sub-cavity is provided on the housing. A second sub-cavity is formed between the second sub-partition, the second sub-screen cylinder and the housing, and a second discharge port connected to the second sub-cavity is provided on the housing. A third sub-cavity is formed between the third sub-partition, the third sub-screen cylinder and the housing, and a third discharge port connected to the third sub-cavity is provided on the housing.

Optionally, the corn seed particle screening machine further comprises a motor and a connecting pipe. The motor is mounted on the housing. The connecting pipe is rotatably connected to the housing, one end of the connecting pipe is connected to an end of the third sub-screen cylinder close to the housing, and the other end extends out of the housing. The motor is transmission-connected to the connecting pipe to drive the connecting pipe to rotate.

Optionally, the corn seed particle screening machine further comprises a first support rod and a second support rod. The first support rod is mounted at the bottom of the housing and is located near one end of the annular screen. The second support rod is mounted at the bottom of the housing and is located near one end of the connecting pipe, and the length of the second support rod is greater than the length of the first support rod.

Optionally, the corn seed particle screening machine further comprises a feed barrel, a plurality of partitions, a blower and a sieve plate. The feed barrel is mounted on the housing. The plurality of partitions are staggered in the feed barrel. The blower is mounted on one side of the inner wall of the feed barrel, the feed barrel has a screening opening on the corresponding side of the blower, the screening opening is provided with a sieve plate, and the blower is located below the plurality of partitions.

Optionally, the corn seed particle screening machine further comprises a dust collecting bag connected to the screening opening.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is an overall schematic diagram of a corn seed particle screening machine provided by an embodiment of the utility model;

FIG2 is a schematic diagram of a screen drum of a corn seed particle screening machine provided by an embodiment of the utility model;

FIG3 is a schematic diagram of a storage chamber of a corn seed particle screening machine provided in an embodiment of the utility model.

In the figure:

1. Shell; 2. Spiral blades; 3. Rotating shaft; 4. Annular screen; 5. Impurity discharge port; 601. First support rod; 602. Second support rod; 7. Screen cylinder; 71. First sub-screen cylinder; 72. Second sub-screen cylinder; 73. Third sub-screen cylinder; 8. Multiple annular partitions; 81. First sub-partition; 82. Second sub-partition; 83. Third sub-partition; 9. Discharge port; 91. First discharge port; 92. Second discharge port; 93. Third discharge port; 10. Connecting pipe; 11. First pulley; 12. Bearing; 13. Belt; 14. Second pulley; 15. Motor; 16. Feed port; 17. Blower; 18. Multiple partitions; 19. Feed cylinder; 20. Screen plate; 21. Dust bag.

DETAILED DESCRIPTION

The embodiments of the present application are described in detail below with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Example

In the production process of agricultural products, seed quality is the key foundation. In order to improve the quality of seeds, it is usually necessary to screen the seeds. Deformed, shriveled or uneven seed sizes are not conducive to cultivation and various problems are likely to occur during the planting process.

In the prior art, the conventional screening device only screens corn seeds by placing them onto a screen in the screening device and using gravity, or generally screens them by blowing air, which results in low screening efficiency and poor screening effect.

In order to solve the above technical problems, the present embodiment provides a particle screening machine for corn seeds, as shown in Figure 1, the particle screening machine for corn seeds may include a housing 1, a screen drum 7, a plurality of annular partition plates 8, an annular screen 4, a rotating shaft 3 and a spiral blade 2. Among them, the housing 1 has a feed port 16, and the interior of the housing 1 is used for screening corn seeds. The screen drum 7 is rotatably installed in the housing 1, and a storage cavity is formed between the housing 1. It should be noted that the sieve holes of the screen drum 7 increase successively from one end close to the feed port 16 to the other end, and the storage cavity is composed of a plurality of sub-cavities, and the screened corn seeds enter the corresponding storage cavity through the sieve holes of the screen drum 7. In this way, the above-mentioned structural method enables the screen drum 7 to rotate in the housing 1 and screen out the corn seeds, and corn seeds of different particle sizes enter the corresponding sub-cavities after passing through sieve holes of different sizes, thereby realizing the classification of corn seeds.

A plurality of annular partition plates 8 are sleeved outside the sieve drum 7, and divide the storage chamber into a plurality of sub-cavities. In the present embodiment, the inner side surfaces of the plurality of annular partition plates 8 are bolted and mounted on the outer wall of the sieve drum 7. In this way, the above structure enables the plurality of annular partition plates 8 to be flexibly adjusted according to the length of the sieve drum 7 and the size of the sieve holes, and is convenient for replacement. The outer side surfaces of the plurality of annular partition plates 8 are spaced apart from the inner wall of the shell 1, so that the plurality of annular partition plates 8 can rotate relative to the shell 1 with the sieve drum 7. It should be noted that grooves are provided on the shell 1 corresponding to the plurality of annular partition plates 8. And the interval between the groove and the plurality of annular partition plates 8 is smaller than the size of the corresponding corn seeds, so as to prevent the corn seeds from flowing through the intervals in different sub-cavities, thereby affecting the classification and screening effect of the corn seed particle screening machine on the corn seeds.

One end of the annular screen 4 is connected to the inner wall of the housing 1, and is used to screen the fine impurities (such as gravel or corn leaves) and broken corn seeds in the corn seeds. In the present embodiment, the annular screen 4 is connected to the housing 1 by rivet connection, so that the connection of the annular screen 4 is more secure and removable and replaceable. It should be noted that the connection mode of the annular screen 4 is not limited to this. Optionally, the annular screen 4 is installed on the housing 1 by bolt connection. The end of the annular screen 4 away from the housing 1 is rotatably connected to one end of the screen drum 7 to achieve relative rotation between the screen drum 7 and the housing 1. Further, the annular screen 4 has an opening, and the opening is located below the feed port 16, so that the annular screen 4 is connected to the feed port 16, so that the corn seeds can enter the annular screen 4 through the feed port 16. In addition, a cavity is formed between the corresponding annular screens 4 on the housing 1, and the housing 1 has a discharge port 5 below the annular screen 4, and the fine impurities and broken corn seeds in the screened corn seeds are discharged from the housing 1 through the discharge port 5.

The rotating shaft 3 is coaxially arranged in the screen drum 7, and one end of the rotating shaft 3 is rotatably connected to the shell 1. In this embodiment, in order to drive the rotating shaft 3 to rotate, one end of the rotating shaft 3 rotatably connected to the shell 1 passes through the shell 1 and is connected to the output shaft of the motor, and the rotating shaft 3 is driven to rotate by the motor. The other end of the rotating shaft 3 is rotatably connected to the screen drum 7. In this embodiment, the rotating shaft 3 and the screen drum 7 are rotatably connected through the bearing 12. In addition, the diameter of the rotating shaft 3 gradually increases from one end close to the feed port 16 to the other end, and the distance between the rotating shaft 3 and the screen drum 7 gradually decreases. In this way, the above structure allows the corn seeds to be gradually flattened to achieve full dispersion of the corn seeds and prevent the screening effect from being affected by the accumulation of corn seeds.

The spiral blade 2 is wound around the outside of the rotating shaft 3. It should be noted that as the diameter of the rotating shaft 3 gradually increases, the inner diameter of the spiral blade 2 increases accordingly. In addition, the spiral blade 2 is driven to rotate by the rotating shaft 3 to drive the corn seeds to move toward the end away from the feed port 16. In this way, the corn seeds enter the annular screen 4 and move toward the screen drum 7, and the screen drum 7 rotates to complete the screening of the corn seeds.

Through the above structure, the present embodiment provides a particle screening machine for corn seeds. During use, the feed port 16 is connected to the opening on the annular screen 4, and the corn seeds enter the annular screen 4 through the feed port 16. After the fine particles (such as gravel or corn leaves) and the broken corn seeds are screened out by the annular screen 4, they enter the cavity formed by the annular screen 4 and the shell 1. The rotating shaft 3 rotates to drive the spiral blade 2 to rotate, and the spiral blade 2 will drive the corn seeds to move toward the end away from the feed port 16, so as to transport the corn seeds from the annular screen 4 to the screen drum 7, and the diameter of the rotating shaft 3 gradually increases, and the accumulated corn seeds are gradually flattened to prevent the corn seeds from being screened incompletely due to the accumulation and blockage of the corn seeds. The screen drum 7 rotates to drive the corn seeds to move with the screen drum 7 to prevent the corn seeds from blocking the screen holes, and at the same time accelerate the corn seeds to pass through the screen holes on the screen drum 7 to speed up the screening rate. In addition, the sieve holes of the sieve cylinder 7 increase in size from small to large, and corn seeds with small particle sizes pass through the small sieve holes of the sieve cylinder 7, and corn seeds with larger particle sizes move forward with the spiral blades 2 and pass through the larger sieve holes of the sieve cylinder 7. The remaining corn seeds continue to move forward with the spiral blades 2 and pass through the largest sieve holes of the sieve cylinder 7. The above-mentioned screened corn seeds enter the storage cavity which is divided into multiple sub-cavities by multiple annular partition plates 8 one by one, and the specific corn seeds with different particle sizes are located in different sub-cavities to achieve the screening purpose and prevent corn seeds with different particle sizes from being re-mixed after screening.

On the basis of the above, in order to distinguish corn seeds of different particle sizes, as shown in FIG. 2, a screen drum 7 of a particle screening machine for corn seeds may include a first sub-screen drum 71, a second sub-screen drum 72 and a third sub-screen drum 73. Among them, the first sub-screen drum 71 is rotatably connected to the annular screen 4. The second sub-screen drum 72 is connected to one end of the first sub-screen drum 71 away from the annular screen 4, and the sieve hole of the second sub-screen drum 72 is larger than the sieve hole of the first sub-screen drum 71. In this embodiment, the first sub-screen drum 71 is connected to the second sub-screen drum 72 by bolts, so as to replace the sub-screen drums with different sieve holes according to different requirements for the size of corn seed particles. One end of the third sub-screen drum 73 is connected to the second sub-screen drum 72. Specifically, the third sub-screen drum 73 is connected to the second sub-screen drum 72 by bolts, and the other end of the third sub-screen drum 73 is rotatably connected to the housing 1. It should be noted that the sieve holes of the third sub-sieve cylinder 73 are larger than the sieve holes of the second sub-sieve cylinder 72, so that larger corn seeds can enter the storage chamber through the third sub-sieve holes 73 to achieve complete screening of the corn seeds.

In addition, the first sub-sieve cylinder 71, the second sub-sieve cylinder 72 and the third sub-sieve cylinder 73 are coaxially arranged and internally connected. In this way, the above structure allows corn seeds to be classified after being screened by sieve holes of different sizes.

On the basis of the above, in order to prevent the mixing of the screened corn seeds, as shown in FIG. 3, a plurality of annular partition plates 8 of a particle screening machine for corn seeds may include: a first sub-partition plate 81, a second sub-partition plate 82 and a third sub-partition plate 83. Among them, the first sub-partition plate 81 is installed on the first sub-screen cylinder 71 through a detachable connection, and is located at the connection between the annular screen 4 and the first sub-screen cylinder 71. A first sub-cavity is formed between the first sub-partition plate 81, the second sub-partition plate 82, the first sub-screen cylinder 71 and the housing 1, so that the corn seeds are pushed into the first sub-screen cylinder 71 by the spiral blade 2, and after the first sub-screen cylinder 71 rotates to drive the corn seeds to rotate and screen, the corn seeds that meet the size of the sieve holes of the first sub-screen cylinder 71 enter the first sub-cavity through the sieve holes of the first sub-screen cylinder 71. In addition, a first groove corresponding to the first sub-partition plate 81 is provided on the housing 1, and the gap between the first sub-partition plate 81 and the first groove is smaller than the size of the sieve holes of the first sub-screen cylinder 71, so as to prevent the corn seeds with smaller particle sizes from being mixed into the impurities through the gap at the first groove. At the same time, a first discharge port 91 communicating with the first sub-cavity is provided on the shell 1 , and the corn seeds screened by the first sub-screen cylinder 71 are discharged from the shell 1 through the first discharge port 91 .

The second sub-partition 82 is installed on the second sub-screen cylinder 72 through a detachable connection, and is located at the connection between the first sub-screen cylinder 71 and the second sub-screen cylinder 72. A second sub-cavity is formed between the second sub-partition 82, the third sub-partition 83, the second sub-screen cylinder 72 and the housing 1, so that the corn seeds screened by the first sub-screen cylinder 71 are pushed into the second sub-screen cylinder 72 by the spiral blade 2, and after the second sub-screen cylinder 72 rotates to drive the corn seeds to rotate and screen, the corn seeds that meet the size of the sieve holes of the second sub-screen cylinder 72 enter the second sub-cavity through the sieve holes of the second sub-screen cylinder 72. In addition, a second groove corresponding to the second sub-partition 82 is provided on the housing 1, and the gap between the second sub-partition 82 and the second groove is smaller than the size of the sieve holes of the second sub-screen cylinder 72, so as to prevent the screened corn seeds from entering the first sub-cavity or mixing into impurities through the gap at the second groove. At the same time, a second discharge port 92 connected to the second sub-cavity is provided on the housing 1, and the seeds screened by the second sub-screen cylinder 72 are discharged from the housing 1 through the second discharge port 92.

The third sub-partition 83 is installed on the third sub-sieve cylinder 73 through a detachable connection, and is located at the connection between the second sub-sieve cylinder 72 and the third sub-sieve cylinder 73. A third sub-cavity is formed between the third sub-partition 83, the third sub-sieve cylinder 73 and the housing 1, so that the corn seeds screened by the first sub-sieve cylinder 71 and the second sub-sieve cylinder 72 are pushed into the third sub-sieve cylinder 73 by the spiral blade 2, and after the third sub-sieve cylinder 73 rotates to drive the corn seeds to rotate and screen, the corn seeds that meet the sieve hole size of the third sub-sieve cylinder 73 enter the third sub-cavity through the sieve holes of the third sub-sieve cylinder 73. In addition, a third groove corresponding to the third sub-partition 83 is provided on the housing 1, and the gap between the third sub-partition 83 and the third groove is smaller than the sieve hole size of the third sub-sieve cylinder 73, so as to prevent the screened corn seeds from entering the first sub-cavity or the second sub-cavity through the gap at the third groove or being mixed into impurities. Meanwhile, a third discharge port 93 communicating with the third sub-cavity is provided on the shell 1 , and the seeds sieved by the third sub-screen drum 73 are discharged from the shell 1 through the third discharge port 93 .

On the basis of the above, in order to drive the screen drum 7 to rotate, as shown in FIG. 1, a corn seed particle screening machine can also include a motor 15 and a connecting pipe 10. Among them, the motor 15 is mounted on the housing 1. The middle part of the connecting pipe 10 is rotatably connected to the housing 1, and one end of the connecting pipe 10 is connected to one end of the third sub-screen drum 73, and the other end extends out of the housing 1. It should be noted that the connecting pipe 10 and the third sub-screen drum 73 are detachably connected, such as bolted, to achieve flexible replacement of the connecting pipe 10 and the screen drum 7. In order to achieve transmission connection between the motor 15 and the connecting pipe 10, in this embodiment, a belt drive is adopted to drive the connecting pipe 10 to rotate. Specifically, the first pulley 11 is mounted on one end of the connecting pipe 10 extending out of the housing 1, the motor 15 has an output shaft, and the second pulley 14 is mounted on the output shaft of the motor 15. The first pulley 11 and the second pulley 14 are connected by a belt 13 to achieve transmission connection. In this way, the output shaft of the motor 15 is rotated to drive the connecting pipe 10 to rotate, thereby driving the screen drum 7 to rotate relative to the housing 1.

On the basis of the above, as shown in FIG1 , a particle screening machine for corn seeds may further include a first support rod 601 and a second support rod 602. The first support rod 601 is mounted at the bottom of the housing 1 and is located at one end close to the annular screen 4. The second support rod 602 is mounted at the bottom of the housing 1 and is located at one end close to the connecting pipe 10. In this embodiment, the first support rod 601 and the second support rod 602 are both fixedly mounted on the housing 1 by welding. It should be noted that the length of the second support rod 602 is greater than the length of the first support rod 601. In this way, the above structural method enables the housing 1 to be placed at an angle, and the spiral blade 2 drives the corn seeds to move toward the third sub-screen drum 73 while moving upward. The corn seeds that are not fully screened move along the screen drum 7 to the end where the annular screen 4 is located under the action of gravity, and then move to the screen drum 7 again with the spiral blade 2 to complete the multiple circulation movement of the corn seeds, so as to achieve full screening of the corn seeds.

On the basis of the above, as shown in FIG1 , a particle screening machine for corn seeds may further include a feed barrel 19, a plurality of partitions 18 and a blower 17. The feed barrel 19 is mounted on the housing 1, and the opening below the feed barrel 19 is connected to the opening on the annular screen 4 through the feed port 16 provided in the housing 1. In addition, a plurality of partitions 18 are staggered in the feed barrel 19 to prevent a large number of corn seeds from entering the housing 1 and causing blockage, thereby affecting the screening efficiency of the corn seeds and the final screening effect. The blower 17 is mounted on one side of the inner wall of the feed barrel 19 and is located below the plurality of partitions 18. In this way, after the corn seeds are dispersed through the plurality of partitions 18, before entering the housing 1 through the feed barrel 19, the air is driven to flow by the blower 17, and the air flow takes out the impurities carried by the corn seeds. It should be noted that the feed barrel 19 has a screening port on the corresponding side of the blower 17, and a screen plate 20 is installed at the screening port to prevent the corn seeds from being taken out of the feed barrel 19 due to excessive airflow. In this way, the above structure removes some impurities from the corn seeds before they enter the shell 1, and at the same time fully disperses the corn seeds so that the corn seeds are screened more thoroughly.

On the basis of the above, as shown in FIG1 , a particle screening machine for corn seeds may further include a dust bag 21 connected to the screening port. In this way, the impurities brought out by the airflow are filtered by the screen plate 20 and then enter the dust bag 21 for centralized treatment. In this way, the above structure allows the corn seeds to remove impurities while avoiding dust generation during the screening process, thereby improving the working environment during the corn seed screening.

In summary, in the process of screening corn seed particles, first, corn seeds are put in from the opening on the feed barrel 19, dispersed after being guided by multiple partitions 18, and the airflow generated by the blower 17 before entering the housing 1 drives the impurities to the screening port, and the impurities pass through the screen plate 20 and enter the dust bag 21 for collection and treatment. After removing the impurities, the corn seeds enter the housing 1 through the feed port 16, and fall into the annular screen 4 through the opening on the annular screen 4. Fine impurities (such as gravel or corn leaves) and broken corn seeds are screened out by the annular screen 4 and discharged from the housing 1 through the impurity discharge port 5 opened in the housing 1. Thereafter, the rotating shaft 2 drives the spiral blade 3 to rotate to push the corn seeds into the screen drum 7, and the motor 15 drives the connecting pipe 10 to rotate through the transmission of the second pulley 14, the belt 13 and the first pulley 11, thereby driving the screen drum 7 to rotate to achieve the screening of the corn seeds. The screened corn enters the storage chamber formed by the shell 1 and the sieve drum 7. Multiple annular partition plates 8 divide the storage chamber into multiple sub-chambers. Corn seeds that meet the size of the sieve holes of the first sub-sieve drum 71 are screened by the first sub-sieve drum 71 and enter the first sub-chamber. Corn seeds that meet the size of the sieve holes of the second sub-sieve drum 72 are screened by the second sub-sieve drum 72 and enter the second sub-chamber. Corn seeds that meet the size of the sieve holes of the third sub-sieve drum 73 are screened by the third sub-sieve drum 73 and enter the third sub-chamber. The screened corn seeds are discharged from the shell 1 from the corresponding discharge port 9 and collected by classification.

The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims (7)

1. A corn seed particle screening machine, comprising:

a housing (1) having a feed opening (16), the interior of the housing (1) being used for screening corn seeds;

The screen cylinder (7) is rotatably arranged in the shell (1), a storage cavity is formed between the screen cylinder (7) and the shell (1), and the screen holes of the screen cylinder (7) are sequentially enlarged from one end close to the feed inlet (16) to the other end;

The plurality of annular separation plates (8) are sleeved outside the screen cylinder (7), the inner side surfaces of the plurality of annular separation plates (8) are arranged on the outer wall of the screen cylinder (7), the outer side surfaces of the plurality of annular separation plates (8) are arranged at intervals with the inner wall of the shell (1), and the storage cavity is separated into a plurality of subchambers by the plurality of annular separation plates (8);

An annular screen (4), one end of which is connected to the inner side wall of the shell (1), the other end of which is rotatably connected to one end of the screen drum (7), wherein the annular screen (4) is provided with an opening, and the opening is positioned below the feed inlet (16) and is communicated with the feed inlet;

The rotating shaft (3) is coaxially arranged in the screen drum (7), one end of the rotating shaft is rotationally connected with the shell (1), the other end of the rotating shaft is rotationally connected with the screen drum (7), and the diameter of the rotating shaft (3) gradually increases from one end close to the feed inlet (16) to the other end; and

The spiral blade (2) is wound outside the rotating shaft (3), and the rotating shaft (3) rotates to drive the spiral blade (2) to rotate so as to drive corn seeds to move.

2. A machine for screening particles for corn seeds according to claim 1, characterized in that said screen drum (7) comprises:

A first sub-screen cylinder (71), wherein one end of the first sub-screen cylinder (71) is rotationally connected with one end of the annular screen (4) far away from the shell (1);

a second sub-screen cylinder (72), one end of which is connected to one end of the first sub-screen cylinder (71) far away from the annular screen (4), and the screen holes of the second sub-screen cylinder (72) are larger than those of the first sub-screen cylinder (71);

One end of the third sub-screen cylinder (73) is connected to the second sub-screen cylinder (72), the other end of the third sub-screen cylinder is rotationally connected with the shell (1), and the screen holes of the third sub-screen cylinder (73) are larger than those of the second sub-screen cylinder (72);

The first sub-screen cylinder (71), the second sub-screen cylinder (72) and the third sub-screen cylinder (73) are coaxially arranged and are communicated with each other.

3. A machine for screening particles for corn seeds according to claim 2, characterized in that said plurality of annular dividing plates (8) comprises:

The first sub-partition board (81), a first sub-cavity is formed between the first sub-partition board (81) and the first sub-screen drum (71) and between the first sub-screen drum and the shell (1), and a first discharge port (91) communicated with the first sub-cavity is formed in the shell (1);

A second sub-separator (82), a second sub-cavity is formed between the second sub-separator (82) and the second sub-screen drum (72) and between the second sub-screen drum and the shell (1), and a second discharge port (92) communicated with the second sub-cavity is formed in the shell (1);

The third sub-separator (83), form the third sub-chamber between third sub-separator (83) with third sub-screen cylinder (73) and casing (1), offer on casing (1) with third discharge gate (93) that the third sub-chamber is linked together.

4. A corn seed particle screening machine according to claim 2, characterized by further comprising:

A motor (15) mounted on the housing (1);

The connecting pipe (10), the connecting pipe (10) is rotationally connected with the shell (1), one end of the connecting pipe (10) is connected with one end of the third sub-screen cylinder (73) close to the shell (1), and the other end extends out of the shell (1);

The motor (15) is in transmission connection with the connecting pipe (10) so as to drive the connecting pipe (10) to rotate.

5. A corn seed particle screening machine according to claim 4, characterized by further comprising:

A first support rod (601) mounted at the bottom of the housing (1) and located at one end close to the annular screen (4);

And the second support rod (602) is arranged at the bottom of the shell (1) and is positioned near one end of the connecting pipe (10), and the length of the second support rod (602) is greater than that of the first support rod (601).

6. A corn seed particle screening machine according to claim 1, characterized by further comprising:

a feed cylinder (19) mounted on the housing (1);

A plurality of baffles (18) arranged in the feeding barrel (19) in a staggered manner;

The air blower (17) is arranged on one side of the inner wall of the feeding barrel (19), the feeding barrel (19) is provided with a screening opening on one side corresponding to the air blower (17), a screen plate (20) is arranged at the screening opening, and the air blower (17) is arranged below the plurality of partition plates (18).

7. A corn seed particle screening machine according to claim 6, characterized by further comprising:

And a dust collecting bag (21) connected to the screening opening.