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 technical field of screening. The utility model comprises a shell, a screen drum, a plurality of annular partition plates, an annular screen, a rotating shaft and spiral blades. The shell is provided with a feed inlet. The screen cylinder is rotatably arranged in the shell, a storage cavity is formed between the screen cylinder and the shell, and the screen holes of the screen cylinder are sequentially enlarged. The plurality of annular separation plates are arranged outside the screen cylinder, the outer side surfaces of the annular separation plates are arranged at intervals with the inner wall of the shell, and the storage cavity is separated into a plurality of subchambers. One end of the annular screen is connected to the inner side wall of the shell, the other end of the annular screen is connected to one end of the screen cylinder, and the annular screen is provided with an opening so as to be communicated with the feed inlet. The rotation axis is coaxially arranged in the screen cylinder, and the diameter of the rotation axis gradually increases from one end close to the feed inlet to the other end. The helical blade is wound outside the rotating shaft, and the rotating shaft rotates to drive the helical blade to rotate. The utility model effectively solves the technical problems of low screening efficiency and poor screening effect in the seed screening process in the prior art.

Description

Granule sieve separator for maize seed

Technical Field

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

Background

In the agricultural product production process, the seed quality is a key basis, in order to improve the seed quality, the seeds are usually required to be screened, the seed particles are malformed, shrunken or uneven in particle size, the culture is not facilitated, and various problems are easy to occur in the planting process.

In the prior art, traditional screening plant only sieves through throwing corn seeds on the screen cloth in the screening equipment when screening, utilizes gravity to carry out the screening, perhaps sieves through blowing generally, and its screening inefficiency, screening effect is not good.

Disclosure of utility model

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

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: a grain screening machine for corn seeds comprises a shell, a screen drum, a plurality of annular partition plates, an annular screen, a rotating shaft and spiral blades. The casing has the feed inlet, and the inside of casing is used for the screening of maize seed. The screen cylinder is rotatably arranged in the shell, a storage cavity is formed between the screen cylinder and the shell, the sieve pores of the sieve cylinder are sequentially enlarged from one end close to the feed inlet to the other end. The plurality of annular division plates are sleeved outside the screen cylinder, the inner side faces of the plurality of annular division plates are arranged on the outer wall of the screen cylinder, the outer side faces of the plurality of annular division plates are arranged at intervals with the inner wall of the shell, and the storage cavity is divided into a plurality of subchambers by the plurality of annular division plates. One end of the annular screen is connected to the inner side wall of the shell, the other end of the annular screen is rotatably connected to one end of the screen cylinder, the annular screen is provided with an opening, and the opening is positioned below the feed inlet and is communicated with the feed inlet. The rotation axis is coaxial to be set up in the screen drum, and the one end and the casing of rotation are connected, and its other end is connected with the screen drum rotation, and the diameter of rotation axis is from being close to the one end of feed inlet to the other end increase gradually. The spiral blade is wound outside the rotating shaft, and the rotating shaft rotates to drive the spiral blade to rotate so as to drive corn seeds to move.

The particle screening machine for corn seeds has the beneficial effects that: in the use, the feed inlet is linked together with the opening on the annular screen, and the maize seed gets into in the annular screen through the feed inlet, and tiny miscellaneous grain (such as gravel or maize leaf) and broken maize seed are through the annular screen back of sieving out, get into in the cavity that annular screen and casing formed. The rotation of the rotation shaft drives the helical blade to rotate, the helical blade drives the corn seeds to move towards one end far away from the feed inlet, so that the corn seeds are conveyed into the screen drum from the annular screen mesh, the diameter of the rotation shaft is gradually increased, the piled corn seeds are gradually flattened, and the corn seeds are prevented from being thoroughly screened due to the accumulation and blockage of the corn seeds. The screen drum rotates to drive the corn seeds to move along with the screen drum so as to avoid the corn seeds from blocking the screen holes, and simultaneously, the corn seeds are accelerated to pass through the screen holes on the screen drum so as to accelerate the screening speed. In addition, the sieve mesh of a sieve tube is increased from small to large in sequence, the corn seeds with small grain sizes pass through the small sieve mesh of the sieve tube, the corn seeds with larger grain sizes move forward along with the spiral blades, the rest corn seeds continue to move forward along with the spiral blades through the large sieve mesh of the sieve tube, the screened corn seeds enter the storage cavity divided into a plurality of subchambers by a plurality of annular partition plates in a one-to-one correspondence mode respectively, and the corn seeds with specific different grain sizes are positioned in different subchambers so as to achieve the screening purpose and prevent the corn seeds with different grain sizes from being mixed again after being screened.

Optionally, the screen cylinder of the grain screening machine for corn seeds comprises 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 rotationally connected with one end of the annular screen far away from the shell. One end of the second sub-screen cylinder is connected to one end of the first sub-screen cylinder far away from the annular screen mesh, and the screen holes of the second sub-screen cylinder are larger than those of the first sub-screen cylinder. One end of the third sub-screen cylinder is connected to the second sub-screen cylinder, the other end of the third sub-screen cylinder is rotationally connected with the shell, and the screen holes of the third sub-screen cylinder are larger than those of the second sub-screen cylinder. The first sub-screen cylinder, the second sub-screen cylinder and the third sub-screen cylinder are coaxially arranged, and the inside of the three sub-screen cylinders are communicated.

Optionally, the plurality of annular separation plates of the grain screening machine for corn seeds comprise a first sub-separation plate, a second sub-separation plate and a third sub-separation plate. A first subchamber is formed between the first subchamber and the first subcreen cylinder as well as between the first subcreen cylinder and the shell, and a first discharge hole communicated with the first subchamber is formed in the shell. A second sub-cavity is formed between the second sub-partition plate, the second sub-screen cylinder and the shell, and a second discharge hole communicated with the second sub-cavity is formed in the shell. A third subchamber is formed between the third subchamber baffle plate and the third subcreen cylinder as well as between the third subcreen cylinder and the shell, and a third discharge hole communicated with the third subchamber is formed in the shell.

Optionally, the grain screening machine for corn seeds further comprises a motor and a connecting pipe. The motor is mounted on the housing. The connecting pipe is rotationally connected with the shell, one end of the connecting pipe is connected with one end of the third sub-screen cylinder close to the shell, and the other end of the connecting pipe extends out of the shell. The motor is in transmission connection with the connecting pipe so as to drive the connecting pipe to rotate.

Optionally, the grain screening machine for corn seeds further comprises a first supporting rod and a second supporting rod. The first support rod is arranged at the bottom of the shell and is positioned at one end close to the annular screen. The second bracing piece is installed in the bottom of casing, and is located the one end that is close to the connecting pipe, and the length of second bracing piece is greater than the length of first bracing piece.

Optionally, the grain screening machine for corn seeds further comprises a feeding cylinder, a plurality of partition plates, a blower and a screen plate. The feed cylinder is installed on the casing. The plurality of baffles are arranged in the feeding cylinder in a staggered way. The air-blower is installed in one side of feed cylinder inner wall, and feed cylinder has screening mouth in the corresponding one side of air-blower, and screening mouth department is equipped with the sieve, and the air-blower is located the below of a plurality of baffles.

Optionally, the grain screening machine for corn seeds further comprises a dust collecting bag, and the dust collecting bag is connected at the screening opening.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an overall schematic diagram of a particle screening machine for corn seeds according to an embodiment of the present utility model;

Fig. 2 is a schematic diagram of a screen drum of a particle screening machine for corn seeds according to an embodiment of the utility model;

Fig. 3 is a schematic view of a storage cavity of a particle screening machine for corn seeds according to an embodiment of the utility model.

In the figure:

1. A housing; 2. a helical blade; 3. a rotation shaft; 4. an annular screen; 5. a impurity discharging port; 601. a first support bar; 602. a second support bar; 7. a screen drum; 71. a first sub-screen drum; 72. a second sub-screen drum; 73. a third sub-screen drum; 8. a plurality of annular partition plates; 81. a first sub-separator; 82. a second sub-separator; 83. a third sub-separator; 9. a discharge port; 91. a first discharge port; 92. a second discharge port; 93. a third discharge port; 10. a connecting pipe; 11. a first pulley; 12. a bearing; 13. a belt; 14. a second pulley; 15. a motor; 16. a feed inlet; 17. a blower; 18. a plurality of separators; 19. a feed cylinder; 20. a sieve plate; 21. a dust collecting bag.

Detailed Description

Embodiments of the present application will be 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," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Examples

In the agricultural product production process, the seed quality is a key basis, in order to improve the seed quality, the seeds are usually required to be screened, the seed particles are malformed, shrunken or uneven in particle size, the culture is not facilitated, and various problems are easy to occur in the planting process.

In the prior art, traditional screening plant only sieves through throwing corn seeds on the screen cloth in the screening equipment when screening, utilizes gravity to carry out the screening, perhaps sieves through blowing generally, and its screening inefficiency, screening effect is not good.

In order to solve the above-mentioned technical problems, the present embodiment provides a particle screening machine for corn seeds, as shown in fig. 1, which 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 helical blade 2. Wherein the housing 1 has a feed opening 16, the interior of the housing 1 being used for screening of corn seeds. The screen drum 7 is rotatably installed in the housing 1 and forms a storage cavity with the housing 1. It should be noted that, the sieve mesh of the sieve drum 7 is sequentially enlarged from one end close to the feed inlet 16 to the other end, the storage cavity is composed of a plurality of subcavities, and the sieved corn seeds enter the corresponding storage cavity through the sieve mesh of the sieve drum 7. Like this, foretell structural style makes screen cylinder 7 can rotate in casing 1 and select corn seed, and the corn seed of particle diameter size difference gets into corresponding subcavity after passing through the sieve mesh of equidimension to the realization is with the classification of corn seed.

A plurality of annular division plates 8 are sleeved outside the screen drum 7 and divide the storage cavity into a plurality of subchambers. In the present embodiment, the inner side faces of the plurality of annular partition plates 8 are mounted on the outer wall of the screen cylinder 7 by bolting. Therefore, the structure enables the plurality of annular separation plates 8 to be flexibly adjusted according to the length of the screen cylinder 7 and the size of the screen holes, and the replacement is convenient. The outer side surfaces of the plurality of annular separation plates 8 are arranged at intervals with the inner wall of the shell 1 so as to realize that the plurality of annular separation plates 8 rotate along with the screen drum 7 relative to the shell 1. It should be noted that grooves are formed in the housing 1 at positions corresponding to the plurality of annular partition plates 8. And the interval of recess and a plurality of annular division board 8 is less than the size of corresponding maize seed to prevent that the maize seed from flowing in different subcavities through the interval, thereby influence this classifying screen effect of granule sieve separator for maize seed to the maize seed.

An annular screen 4 is attached at one end to the inner side wall of the housing 1 for screening fine miscellaneous particles (such as gravel or corn leaves) in the corn seeds and crushed corn seeds. In this embodiment, the annular screen 4 is connected to the housing 1 by a rivet connection, so that the connection of the annular screen 4 is more secure and can be replaced detachably. It should be noted that the connection manner of the annular screen 4 is not limited thereto, and the annular screen 4 may alternatively be mounted on the housing 1 by bolting. The end of the annular screen 4 far away from the shell 1 is rotationally connected with one end of the screen drum 7 so as to realize the relative rotation of the screen drum 7 and the shell 1. Further, the annular screen 4 has openings therein, and the openings are located below the feed inlet 16, such that the annular screen 4 is in communication with the feed inlet 16 such that corn seeds can enter the annular screen 4 through the feed inlet 16. In addition, a cavity is formed between the corresponding annular screens 4 on the shell 1, and the shell 1 is provided with a trash outlet 5 below the annular screens 4, and fine trash particles in the screened corn seeds and crushed corn seeds are discharged out of the shell 1 through the trash outlet 5.

The rotary shaft 3 is coaxially arranged in the screen drum 7, and one end of the rotary shaft 3 is rotatably connected with the shell 1. In this embodiment, in order to drive the rotation shaft 3 to rotate, one end of the rotation shaft 3 rotationally connected with the housing 1 passes through the housing 1 and is connected with an output shaft of a motor, and the rotation shaft 3 is driven to rotate by the motor. The other end of the rotary shaft 3 is rotatably connected to the screen drum 7, and in this embodiment, the rotary shaft 3 is rotatably connected to the screen drum 7 via a bearing 12. Further, the diameter of the rotary shaft 3 gradually increases from one end near the feed port 16 to the other end, and the distance between the rotary shaft 3 and the screen drum 7 gradually decreases. Like this, foretell structure makes corn seed stall gradually to realize the abundant dispersion of corn seed, prevent to influence screening effect because of corn seed piles up.

The helical blade 2 is wound around the rotation shaft 3. The diameter of the inner side of the spiral blade 2 increases as the diameter of the rotation shaft 3 increases. In addition, the rotation of the rotating shaft 3 drives the spiral blade 2 to rotate so as to drive the corn seeds to move towards one end far away from the feeding hole 16. Thus, the corn seeds enter the annular screen 4 and then move towards the screen drum 7, and the corn seeds are screened by rotating the screen drum 7.

Through the structure, in the use of the particle screening machine for corn seeds provided by the embodiment, the feed inlet 16 is communicated with the opening on the annular screen 4, corn seeds enter the annular screen 4 through the feed inlet 16, and fine sundries (such as gravel or corn leaves) and broken corn seeds enter the cavity formed by the annular screen 4 and the shell 1 after being screened out through the annular screen 4. The rotation axis 3 rotates in order to drive helical blade 2 rotation, and helical blade 2 will drive the maize seed to the one end that keeps away from feed inlet 16 and remove to carry maize seed from annular screen cloth 4 in to screen drum 7, and the diameter of rotation axis 3 increases gradually, shakeouts piled up maize seed gradually, so as to prevent to pile up the jam and cause the screening of maize seed not thoroughly. The screen drum 7 rotates to drive corn seeds to move along with the screen drum 7 so as to avoid corn seeds from blocking screen holes, and simultaneously speed up corn seeds to pass through the screen holes on the screen drum 7 so as to speed up screening speed. In addition, the sieve mesh of sieve section of thick bamboo 7 increases in proper order from small to big, and the maize seed that the particle diameter is little passes through the small sieve mesh of sieve section of thick bamboo 7, and the maize seed that the particle diameter is great moves along with helical blade 2, and through the great sieve mesh of sieve section of thick bamboo 7, the maize seed that remains continues along with helical blade 2 and moves along with, through the biggest sieve mesh of sieve section of thick bamboo 7, the entering of its above-mentioned screening maize seed respectively one-to-one is separated into the storage intracavity in a plurality of subcavities by a plurality of annular division boards 8, and specific different particle diameter size's maize seed is located different subcavities to reach the screening purpose, and prevent remixing after the maize seed screening of different particle diameter size.

In addition to the above, in order to distinguish corn seeds having different particle sizes, referring to fig. 2, a screen drum 7 of a corn seed particle screening machine may include a first sub-screen drum 71, a second sub-screen drum 72, and a third sub-screen drum 73. Wherein the first sub-screen cylinder 71 is in rotational connection with the endless screen 4. The second sub-screen drum 72 is attached to the end of the first sub-screen drum 71 remote from the endless screen 4, and the mesh size of the second sub-screen drum 72 is larger than the mesh size of the first sub-screen drum 71. In this embodiment, the first sub-screen drum 71 is bolted to the second sub-screen drum 72 to facilitate replacement of sub-screen drums of different size screens according to different requirements for the size of the corn seed particle size. One end of the third sub-screen cylinder 73 is connected to the second sub-screen cylinder 72, specifically, the third sub-screen cylinder 73 is connected to the second sub-screen cylinder 72 by a bolt, and the other end of the third sub-screen cylinder 73 is connected to the housing 1 in a rotating manner. It should be noted that the mesh size of the third sub-screen drum 73 is larger than the mesh size of the second sub-screen drum 72, so that larger corn seeds can enter the storage chamber through the third sub-screen drum 73 to achieve full screening of corn seeds.

In addition, 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, so that the corn seeds are classified after being screened by the screen holes with different sizes.

In addition to the above, in order to prevent the sieved corn seeds from being mixed, referring to fig. 3, a plurality of ring-shaped partition plates 8 of a granule screening machine for corn seeds may include: the first sub-partition 81, the second sub-partition 82, and the third sub-partition 83. Wherein the first sub-partition 81 is mounted on the first sub-screen drum 71 by a detachable connection, at the junction of the annular screen 4 and the first sub-screen drum 71. The first sub-partition board 81, the second sub-partition board 82, the first sub-screen cylinder 71 and the shell 1 form a first sub-cavity, so that corn seeds are pushed into the first sub-screen cylinder 71 by the spiral blades 2, rotate by the first sub-screen cylinder 71 to drive the corn seeds to rotate and screen, and then the corn seeds conforming to the screen size of the first sub-screen cylinder 71 enter the first sub-cavity through the screen holes of the first sub-screen cylinder 71. In addition, the shell 1 is provided with a first groove corresponding to the first sub-baffle 81, and the gap between the first sub-baffle 81 and the first groove is smaller than the mesh size of the first sub-screen drum 71 so as to prevent corn seeds with smaller particle size from being mixed into impurities through the gap at the first groove. Meanwhile, a first discharge hole 91 communicated with the first subchamber is formed in the shell 1, and corn seeds screened out by the first subchamber 71 are discharged out of the shell 1 through the first discharge hole 91.

The second sub-screen 82 is mounted to the second sub-screen drum 72 by a removable connection at the junction of the first sub-screen drum 71 and the second sub-screen drum 72. The second sub-partition plate 82, the third sub-partition plate 83, the second sub-screen cylinder 72 and the shell 1 form a second sub-cavity, so that corn seeds screened by the first sub-screen cylinder 71 are pushed into the second sub-screen cylinder 72 through the spiral blade 2, rotate by the second sub-screen cylinder 72 to drive the corn seeds to rotate and screen, and then the corn seeds conforming to the screen size of the second sub-screen cylinder 72 enter the second sub-cavity through the screen holes of the second sub-screen cylinder 72. In addition, a second groove corresponding to the second sub-partition plate 82 is formed in the shell 1, and a gap between the second sub-partition plate 82 and the second groove is smaller than the mesh size of the second sub-screen cylinder 72, so that the screened corn seeds are prevented from entering the first sub-cavity or mixing into impurities through the gap at the second groove. Meanwhile, a second discharge hole 92 communicated with the second subchamber is formed in the shell 1, and seeds screened out by the second subchamber 72 are discharged out of the shell 1 through the second discharge hole 92.

The third sub-separator 83 is mounted to the third sub-screen drum 73 by a detachable connection at the junction of the second sub-screen drum 72 and the third sub-screen drum 73. The third sub-separator 83 forms a third sub-cavity with the third sub-screen cylinder 73 and the shell 1, so that the corn seeds screened by the first sub-screen cylinder 71 and the second sub-screen cylinder 72 are pushed into the third sub-screen cylinder 73 by the spiral blade 2, rotate by the third sub-screen cylinder 73 to drive the corn seeds to rotate and screen, and then the corn seeds conforming to the size of the sieve holes of the third sub-screen cylinder 73 enter the third sub-cavity through the sieve holes of the third sub-screen cylinder 73. In addition, a third groove corresponding to the third sub-baffle 83 is formed in the shell 1, and a gap between the third sub-baffle 83 and the third groove is smaller than the mesh size of the third sub-screen cylinder 73, so that the screened corn seeds are prevented from entering the first sub-cavity or the second sub-cavity or mixing into impurities through the gap at the third groove. Meanwhile, a third discharge hole 93 communicated with the third subchamber is formed in the shell 1, and seeds screened out by the third subchamber 73 are discharged out of the shell 1 through the third discharge hole 93.

In addition to the above, referring to fig. 1, a grain screening machine for corn seeds may further include a motor 15 and a connection pipe 10 in order to drive the screen drum 7 to rotate. Wherein the motor 15 is mounted on the housing 1. The middle part of the connecting pipe 10 is rotatably connected with the housing 1, and one end of the connecting pipe 10 is connected with 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 connection pipe 10 and the third sub-screen drum 73 are detachably connected, such as by a bolt, so as to realize flexible replacement of the connection pipe 10 and the screen drum 7. In order to realize the driving connection of the motor 15 and the connection pipe 10, in this embodiment, belt driving is used to drive the connection pipe 10 to rotate. Specifically, the first pulley 11 is mounted on an end of the connection pipe 10 protruding from the housing 1, the motor 15 has an output shaft, the second pulley 14 is mounted on the output shaft of the motor 15, and a transmission connection is achieved between the first pulley 11 and the second pulley 14 through the belt 13. Thus, through the structure, the output shaft of the motor 15 rotates to drive the connecting pipe 10 to rotate, so that the screen drum 7 is driven to rotate relative to the shell 1.

On the basis of the above, referring to fig. 1, a grain screening machine for corn seeds may further include a first support bar 601 and a second support bar 602. Wherein the first support bar 601 is installed at the bottom of the housing 1 and located near one end of the annular screen 4. The second support bar 602 is installed at the bottom of the housing 1 and is located near one end of the connection pipe 10. In this embodiment, the first support rod 601 and the second support rod 602 are fixedly mounted on the housing 1 by welding. It should be noted that, the length of the second supporting rod 602 is greater than that of the first supporting rod 601, so that the casing 1 is inclined in the above structural manner, the spiral blade 2 drives the corn seeds to move towards the third sub-sieve tube 73 and move upwards, and the insufficiently sieved corn seeds move towards the end of the annular screen 4 along the interior of the sieve tube 7 under the action of gravity and then move towards the sieve tube 7 along with the spiral blade 2 again, so as to complete repeated cyclic movement of the corn seeds and realize sufficient sieving of the corn seeds.

On the basis of the above, referring to fig. 1, a grain screening machine for corn seeds may further include a feed cylinder 19, a plurality of partitions 18, and a blower 17. The feed cylinder 19 is installed on the casing 1, and the opening below the feed cylinder 19 is communicated with the opening on the annular screen 4 through a feed port 16 formed in the casing 1. In addition, a plurality of baffles 18 are staggered in the feeding barrel 19 to prevent a large amount of corn seeds from entering the shell 1 to cause blockage, and the screening efficiency and the final screening effect of the corn seeds are affected. The blower 17 is installed at one side of the inner wall of the feed cylinder 19 and below the plurality of partitions 18. Thus, when the corn seeds are dispersed by the plurality of partition plates 18, before entering the shell 1 through the feeding cylinder 19, air is driven to flow by the blower 17, and impurities carried by the corn seeds are carried out by the air flow. The feed cylinder 19 has a screening opening at the corresponding side of the blower 17, and a screen plate 20 is installed at the screening opening to prevent excessive airflow from taking corn seeds out of the feed cylinder 19. Thus, the above-described structure allows corn seeds to have some impurities removed prior to entering the housing 1 while sufficiently dispersing the corn seeds to allow more thorough screening of the corn seeds.

On the basis of the above, referring to fig. 1, a screening machine for corn seeds may further include a dust bag 21 connected to the screening opening. Thus, the impurities carried out by the air flow are filtered by the screen plate 20 and then enter the dust bag 21 for centralized treatment. Therefore, the structure ensures that the corn seeds are prevented from manufacturing dust while impurities are removed in the screening process, so that the working environment of corn seed screening is improved.

In summary, in the process of screening corn seed particles, corn seeds are firstly put into the feed cylinder 19 from an opening, guided by a plurality of baffles 18 and dispersed, and before entering the shell 1, the impurities are driven to a screening opening by the air flow generated by the air blower 17, and enter the dust collecting bag 21 for collection treatment after passing through the screen plate 20. Corn seeds enter the shell 1 through the feed inlet 16 after impurities are removed, fall into the annular screen 4 through openings in the annular screen 4, and are discharged out of the shell 1 through the impurity discharge opening 5 formed in the shell 1 after fine impurity particles (such as gravel or corn leaves) and crushed corn seeds are screened out through the annular screen 4. Thereafter, the rotating shaft 2 drives the spiral blade 3 to rotate so as to push corn seeds into the screen drum 7, and the motor 15 drives the connecting pipe 10 to rotate through the transmission of the second belt pulley 14, the belt 13 and the first belt pulley 11 so as to drive the screen drum 7 to rotate so as to screen the corn seeds. The sieved corn enters a storage cavity formed between the shell 1 and the screen cylinder 7, the storage cavity is divided into a plurality of subchambers by the annular separation plates 8, corn seeds conforming to the sieve pore size of the first subcreen cylinder 71 are sieved by the first subcreen cylinder 71 and enter the first subchamber, corn seeds conforming to the sieve pore size of the second subscreen cylinder 72 are sieved by the second subscreen cylinder 72 and enter the second subchamber, corn seeds conforming to the sieve pore size of the third subscreen cylinder 73 are sieved by the third subscreen cylinder 73 and enter the third subchamber, and the sieved corn seeds are discharged from the corresponding discharge port 9 out of the shell 1 and then are classified and collected.

The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to 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.