A crop seed screening device

Abstract

This utility model relates to the field of crop seed technology, specifically a crop seed screening device, including a machine base, a collection box, a screening cylinder, a spiral pushing assembly, a feeding air separation mechanism, and a screening cabinet. The screening cylinder extends laterally through the left side of the collection box and out to its right side. The spiral pushing assembly is horizontally arranged inside the screening cylinder and consists of a main shaft, spiral blades, and a screen. The feeding air separation mechanism includes a feeding cylinder, an air separation cylinder, a rotating shaft, and fan blades. A filter screen is provided inside the screening cabinet. This utility model features simple operation, convenient use, good screening effect, and environmental friendliness. Simply feeding the crop seeds to be screened into the feeding cylinder and activating the drive unit achieves triple screening of the crops, greatly reducing the content of impurities and broken seeds in the crop seeds, and significantly improving the screening effect and efficiency of crop seeds.

Description

Technical Field

[0001] This utility model relates to the field of crop seed technology, and in particular to a crop seed screening device. Background Technology

[0002] Crop seeds are essential production materials in agricultural production. They refer to planting or propagation materials such as grains, fruits, roots, stems, seedlings, buds, leaves, and flowers used in agriculture and forestry. When using crop seeds, it is often necessary to screen them to remove impurities and broken or unusable seeds. With the continuous development of technology, crop seed screening machines are now widely used in the market for screening crops.

[0003] The prior art discloses a crop seed screening device under publication number CN223011099U, which includes a mounting frame. A feed hopper is fixedly connected inside the mounting frame, and a movable plate is slidably engaged with the bottom of the feed hopper. A connecting frame is provided inside the mounting frame, located below the feed hopper. However, the following problems exist:

[0004] Most methods involve using filter screens to vibrate and screen crop seeds for extended periods, which is only a single-stage screening process. The screening effect is poor, resulting in a high content of impurities and broken seeds in the crop seeds. Furthermore, due to the lack of protection, the screened impurities often scatter outside during vibration screening, polluting the working environment and hindering the widespread use of crop seed screening devices.

[0005] Therefore, this application provides a crop seed screening device to meet the needs. Utility Model Content

[0006] In view of the shortcomings of the existing technology, this utility model provides a crop seed screening device, which can solve the technical problems of poor screening effect, high content of impurity particles and broken seeds in crop seeds, and the fact that the screened impurity particles are often scattered outside during vibration screening, which can easily cause pollution to the working environment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a crop seed screening device, comprising:

[0008] The machine tool has a drive unit on the top right side and a mounting slot on the top left side of the drive unit.

[0009] A central control box, which is installed on the top left side of the machine base;

[0010] The sieve cylinder extends laterally through the left side of the collection box and extends out to its right side. The part of the sieve cylinder extending out of the bottom right side of the collection box is set on the cavity of the placement trough. The top right side of the sieve cylinder has a feeding port, and the bottom left side of the sieve cylinder has a discharge port. The bottom end of the discharge port is equipped with a guide cylinder.

[0011] The spiral pushing assembly is horizontally arranged in the inner cavity of the sieve cylinder. The spiral pushing assembly consists of a main shaft, spiral blades spaced apart on the outer surface of the main shaft, and a screen located in the inner cavity of the collection box and installed at the bottom opening of the sieve cylinder. The shaft of the main shaft extends out of the right side of the sieve cylinder and connects to the drive unit.

[0012] The feeding air separation mechanism includes a feeding cylinder vertically connected to the top of the screening cylinder and communicating with the feeding port, an air separation cylinder horizontally installed on the side of the feeding cylinder and communicating with the feeding cylinder, a rotating shaft horizontally passing through the inner cavity of the air separation cylinder, and fan blades located in the inner cavity of the air separation cylinder and sleeved on the shaft body of the rotating shaft. The left end of the shaft body of the rotating shaft horizontally passes through the right side of the collection box and extends out of the left side of the collection box.

[0013] A screening cabinet is located below a guide cylinder and installed on a machine platform. The bottom end of the guide cylinder extends vertically into the top of the screening cabinet, and a filter screen is provided inside the screening cabinet.

[0014] Preferably, the air separator consists of a first cylinder body horizontally installed on the right side of the feed cylinder and a second cylinder body horizontally installed on the left side of the feed cylinder and symmetrical to the first cylinder body. The hollow structures of the inner cavities of the first cylinder body and the second cylinder body are connected to the inner cavity of the feed cylinder. Heat dissipation holes are arranged at intervals on the right side of the first cylinder body, and the rotating shaft extends laterally out of the right side of the first cylinder body.

[0015] Preferably, the left and right sides of the second cylinder are both open structures, and the left opening of the second cylinder is connected to the inner cavity of the collection box. The right side of the collection box is provided with a through hole that is connected to the left opening of the second cylinder.

[0016] Preferably, the drive unit consists of a motor and a reducer. The drive unit is used to drive the main shaft and the rotating shaft to rotate circumferentially. The rotating shaft and the main shaft are installed laterally and flush with each other. The outer surface of the main shaft is provided with a drive pulley located between the screening cylinder and the drive unit. The right end of the rotating shaft extends out of the right side of the air separator and is fitted with a secondary drive pulley. The secondary drive pulley and the drive pulley are connected by a transmission belt.

[0017] Preferably, the top of the central box and the bottom of the front are both open structures. The central box is connected to a cover for sealing the top opening, and the bottom of the front of the central box is detachably connected to a door for sealing the bottom opening.

[0018] Preferably, the screening cabinet has a detachable door on the front, the right side of the screening cabinet is close to the bottom left side of the collection box, and at least one set of filter screens are provided and arranged from top to bottom inside the screening cabinet.

[0019] Preferably, a hopper is installed at the top of the feed cylinder, and the height of the hopper exceeds the vertical height of the collection box.

[0020] Compared with known public technologies, the technical solution provided by this utility model has the following beneficial effects:

[0021] 1. This utility model features simple operation, convenient use, and good screening effect. Simply feed the crop seeds into the material cylinder and start the drive unit to achieve triple screening of the crops. Through the set air separator, rotating shaft, and fan blades, primary air separation screening of the crop seeds is achieved. Furthermore, with the cooperation of the main shaft, spiral blades, and screen, the spiral blades generate a spiral driving force to continuously push the crop seeds to tumble and move on the screen, achieving secondary screen tumbling screening. Simultaneously, gravity screening of the crop seeds is performed using a filter screen, achieving triple screening of the crop seeds. This greatly reduces the content of impurities and broken seeds in the crop seeds, significantly improving the screening effect and efficiency, and is conducive to the widespread use of this crop seed screening device.

[0022] 2. This utility model, through the setting of a box door or box cover, can quickly remove the impurity particles and broken seeds collected inside the collection box. Utilizing the cabinet door and filter screen, qualified agricultural products can be quickly removed by gravity, thereby greatly improving the ease of use of this crop seed screening device. Furthermore, the collection box and screening cabinet can quickly and enclose the screened impurity particles, effectively preventing impurity particles from scattering and polluting the environment during the screening process, thus improving the environmental performance of this crop seed screening device. Attached Figure Description

[0023] The present invention is further described with reference to embodiments illustrated in the following figures, wherein:

[0024] Figure 1 This is a three-dimensional structural view of the crop seed screening device of this utility model;

[0025] Figure 2 This is a cross-sectional view of the structure of the crop seed screening device of this utility model;

[0026] Figure 3 This is a cross-sectional view of the combined structure of the feed cylinder, air separator, and sieve cylinder of this utility model;

[0027] Figure 4 This is a three-dimensional view of the sieve cylinder of this utility model.

[0028] [Figure Labels]

[0029] 1. Machine base; 101. Installation trough; 2. Centralized box; 201. Box cover; 202. Box door; 3. Screening cylinder; 301. Main shaft; 302. Spiral blades; 303. Drive pulley; 304. Feed inlet; 305. Through port; 306. Screen; 307. Discharge port; 4. Guide cylinder; 5. Screening cabinet; 501. Filter screen; 502. Cabinet door; 6. Feed cylinder; 601. Hopper; 7. Air separator; 701. First cylinder; 702. Second cylinder; 8. Drive unit; 9. Rotating shaft; 901. Fan blades; 902. Auxiliary drive pulley; 10. Transmission belt. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] The present invention will be further described below with reference to embodiments:

[0032] Please see Figure 1-4 As shown, a crop seed screening device includes a machine base 1, a collection box 2, a screening cylinder 3, a spiral pushing assembly, a feeding air separation mechanism, and a screening cabinet 5. A drive unit 8 is provided on the top right side of the machine base 1, and a placement groove 101 is provided on the top left side of the machine base 1 near the drive unit 8. The collection box 2 is installed on the top left side of the machine base 1. The upper end and the bottom front of the collection box 2 are both open structures. A box cover 201 for sealing the upper opening is connected to the box body of the collection box 2, and a box door 202 for sealing the bottom front opening is detachably connected to the bottom front of the collection box 2. The impurity particles and broken seeds collected inside the collection box 2 can be quickly removed from the collection box 2 through the box door 202 or the box cover 201.

[0033] Specifically, the sieve cylinder 3 extends horizontally through the left side of the collection box 2 and out to its right side. The bottom part of the sieve cylinder 3 extending out to the right side of the collection box 2 is set in the cavity of the mounting groove 101. The mounting groove 101 allows the sieve cylinder to be more stably installed on the collection box 2 and the machine base 1, thus facilitating the safe and reliable use of the sieve cylinder 3. A feeding port 304 is opened on the right side of the top of the sieve cylinder 3, and a discharge port 307 is opened on the left side of the bottom of the sieve cylinder 3. A guide cylinder 4 is installed at the bottom of the discharge port 307. The guide cylinder 4 allows the crop seeds that have passed through the tumbling and screening action of the screen 306 to be quickly guided into the screening cabinet 5, facilitating the rapid transfer of crop seeds. The seeds are moved to the screening cabinet 5 for gravity screening of crop seeds. The screening cabinet 5 is located below the guide cylinder 4 and is installed on the machine base 1. The bottom end of the guide cylinder 4 extends vertically into the top of the screening cabinet 5. The screening cabinet 5 is equipped with a filter screen 501. The front of the screening cabinet 5 is detachably connected to a cabinet door 502. The right side of the cabinet body of the screening cabinet 5 is close to the bottom left side of the collection box 2. The filter screen 501 is provided in at least one set and is arranged from top to bottom inside the screening cabinet 5. Preferably, in this embodiment, the filter screen 501 can be, but is not limited to, two or more sets and arranged from top to bottom inside the screening cabinet 5, which can perform more precise screening of crop seeds.

[0034] In this embodiment, the spiral pushing assembly is laterally arranged inside the sieve cylinder 3. The spiral pushing assembly consists of a main shaft 301, spiral blades 302 spaced apart on the outer surface of the main shaft 301, and a screen 306 located inside the concentrator 2 and installed at the bottom opening 305 of the sieve cylinder 3. The shaft of the main shaft 301 extends out of the right side of the sieve cylinder 3 and connects to the drive unit 8. The aforementioned feed air separation mechanism includes a feed cylinder 6 vertically connected to the top of the sieve cylinder 3 and communicating with the feed inlet 304, an air separation cylinder 7 laterally installed on the side of the feed cylinder 6 and communicating with the feed cylinder 6, a rotating shaft 9 laterally passing through the inner cavity of the air separation cylinder 7, and fan blades 901 located inside the inner cavity of the air separation cylinder 7 and sleeved on the shaft of the rotating shaft 9. The left end of the rotating shaft 9 laterally passes through the concentrator 2. The right side of the box 2 extends to the left side of the collection box 2; wherein, the drive unit 8 consists of a motor and a reducer. The drive unit 8 is used to drive the main shaft 301 and the rotating shaft 9 to rotate in a circular manner. The rotating shaft 9 and the main shaft 301 are installed laterally and flush with each other. The outer surface of the main shaft 301 is provided with a drive pulley 303 between the screening cylinder 3 and the drive unit 8. The right end of the rotating shaft 9 extends out to the right side of the air separator 7 and is fitted with a secondary drive pulley 902. The secondary drive pulley 902 and the drive pulley 303 are connected by a transmission belt 10. The motor and reducer mentioned are, but are not limited to, conventional YVP frequency conversion motors on the market, and the reducer is, but is not limited to, a DCY reducer. The structure and principle of the motor and reducer are well-known technologies on the market, so they will not be described in detail here.

[0035] It should be noted that the aforementioned air separator 7 consists of a first cylinder 701 horizontally installed on the right side of the feed cylinder 6, and a second cylinder 702 horizontally installed on the left side of the feed cylinder 6 and symmetrical to the first cylinder 701. The hollow structures of the inner cavities of the first cylinder 701 and the second cylinder 702 are connected to the inner cavity of the feed cylinder 6. The right side of the first cylinder 701 is provided with heat dissipation holes at intervals, and the rotating shaft 9 extends laterally out of the right side of the first cylinder 701. The left and right sides of the second cylinder 702 are both open structures, and the left opening of the second cylinder 702 is connected to the inner cavity of the collection box 2. The right side of the collection box 2 is provided with a through hole that communicates with the left opening of the second cylinder 702. The top of the feed cylinder 6 is equipped with a hopper 601, and the height of the hopper 601 exceeds the vertical height of the collection box 2. The hopper 601 is designed to facilitate the rapid, smooth, and leak-free feeding of crop seeds into the feed cylinder 6.

[0036] In this embodiment, when the drive unit 8 is running, the main shaft 301 can rotate in a circular motion. Under the transmission action of the drive pulley 303, the auxiliary drive pulley 902 and the transmission belt 10, the running main shaft 301 drives the rotating shaft 9 to rotate clockwise in a circular motion. The rotating shaft 9 then drives the fan blade 901 to rotate, thereby generating a continuous airflow / wind blowing towards the second cylinder 702, thus achieving the function of air separation and sieving of the crop seeds to be screened.

[0037] In operation, the crop seed screening device starts by activating the motor in the drive unit 8 to drive the reducer, which in turn drives the main shaft 301 and the rotating shaft 9 to rotate clockwise synchronously. The crop seeds to be screened are then quickly fed from the hopper 601 into the feed cylinder 6. Under gravity, the seeds fall from the feed cylinder 6. As they pass through the air separator 7, the rotating fan blades 901 generate continuous airflow to screen the seeds, reducing the amount of lighter impurities and broken seeds. The lighter impurities and broken seeds are blown into the collection box 2 for collection, achieving primary air separation of the crop seeds. The air-separated seeds continue to fall into the screening cylinder 3. When the main shaft 301 rotates, it drives the spiral blades 302 to rotate, generating… The spiral force moving towards the discharge port 307 pushes the crop seeds to tumble and move on the screen 306. At this time, the screen 306 can screen out a large number of impurities or broken crop seeds and collect them in the collection box 2, realizing the secondary screen tumbling screening of crop seeds. After the screen tumbling screening, the crop seeds are pushed to the discharge port 307 and fall off the discharge port 307 and are guided by the guide cylinder 4 into the screening cabinet 5, where they are screened by the filter screen 501. This completes the screening of crop seeds and realizes the tertiary filter gravity screening of crop seeds. After screening, the qualified crop seeds fall onto the filter screen 501. The user can open the cabinet door 502 to take out the filter screen 501 containing the qualified crop seeds and then take out the qualified crop seeds.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A crop seed screening device, characterized by, include: The machine platform (1) has a drive unit (8) on the right side of the top of the machine platform (1), and a mounting slot (101) is provided on the top of the machine platform (1) near the left side of the drive unit (8). Centralized box (2), which is installed on the left side of the top of the machine base (1); The sieve cylinder (3) extends laterally through the left side of the collection box (2) and extends out to its right side. The bottom part of the sieve cylinder (3) extending out of the right side of the collection box (2) is set on the cavity of the placement trough (101). The top right side of the sieve cylinder (3) is provided with a feeding port (304), and the bottom left side of the sieve cylinder (3) is provided with a discharge port (307). The bottom end of the discharge port (307) is equipped with a guide cylinder (4). The spiral pushing assembly is horizontally arranged in the inner cavity of the sieve cylinder (3). The spiral pushing assembly consists of a main shaft (301), spiral blades (302) spaced apart on the outer surface of the main shaft (301), and a screen (306) located in the inner cavity of the collection box (2) and installed at the bottom opening (305) of the sieve cylinder (3). The shaft of the main shaft (301) extends out of the right side of the sieve cylinder (3) and connects to the drive unit (8). The feeding air separation mechanism includes a feeding cylinder (6) vertically connected to the top of the screening cylinder (3) and communicating with the feeding port (304), an air separation cylinder (7) horizontally installed on the side of the feeding cylinder (6) and communicating with the feeding cylinder (6), a rotating shaft (9) horizontally passing through the inner cavity of the air separation cylinder (7), and a fan blade (901) located in the inner cavity of the air separation cylinder (7) and sleeved on the shaft of the rotating shaft (9). The left end of the shaft of the rotating shaft (9) horizontally passes through the right side of the collection box (2) and extends out of the left side of the collection box (2). Screening cabinet (5) is located below the guide cylinder (4) and installed on the machine base (1). The bottom end of the guide cylinder (4) extends vertically into the top of the screening cabinet (5), and a filter screen (501) is provided inside the screening cabinet (5).

2. The crop seed screening device of claim 1, wherein: The air separator (7) consists of a first cylinder (701) horizontally installed on the right side of the feed cylinder (6) and a second cylinder (702) horizontally installed on the left side of the feed cylinder (6) and symmetrical to the first cylinder (701). The hollow structures of the inner cavities of the first cylinder (701) and the second cylinder (702) are connected to the inner cavity of the feed cylinder (6). Heat dissipation holes are arranged at intervals on the right side of the first cylinder (701), and the rotating shaft (9) extends laterally out of the right side of the first cylinder (701).

3. The crop seed screening device of claim 2, wherein: The second cylinder (702) has an open structure on both the left and right sides, and the left opening of the second cylinder (702) is connected to the inner cavity of the collection box (2). The right side of the collection box (2) is provided with a through hole that is connected to the left opening of the second cylinder (702).

4. The crop seed screening device of claim 1, wherein: The drive unit (8) consists of a motor and a reducer. The drive unit (8) is used to drive the main shaft (301) and the rotating shaft (9) to rotate in a circular motion. The rotating shaft (9) and the main shaft (301) are installed horizontally and flush with each other. The outer surface of the main shaft (301) is provided with a drive pulley (303) located between the sieve cylinder (3) and the drive unit (8). The right end of the rotating shaft (9) extends out of the right side of the air separator (7) and is fitted with a secondary drive pulley (902). The secondary drive pulley (902) and the drive pulley (303) are connected by a transmission belt (10).

5. The crop seed screening device of claim 1, wherein: The upper part of the box body (2) and the bottom front of the box body are both open structures. The box body of the box body (2) is connected to a box cover (201) for sealing the upper opening. The bottom front of the box body (2) is detachably connected to a box door (202) for sealing the bottom front opening.

6. The crop seed screening device of claim 1, wherein: The screening cabinet (5) has a detachable door (502) on its front side. The right side of the screening cabinet (5) is close to the bottom left side of the collection box (2). At least one set of filter screens (501) are provided and the filter screens (501) are arranged from top to bottom inside the screening cabinet (5).

7. The crop seed screening device of claim 1, wherein: The top of the feed cylinder (6) is equipped with a hopper (601), and the height of the hopper (601) exceeds the vertical height of the collection box (2).

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