A new seed compound screening machine cloth storage stone device

Abstract

The application discloses a novel seed compound screening machine cloth stone storage device, relates to the technical field of agricultural seed cleaning and grain processing, and comprises a stone storage groove, a fixing support, a cleaning material port baffle, a feeding side plate, a feeding slide plate, a feeding baffle and a cloth plate, is installed on a specific gravity sieve frame of a seed screening machine through the fixing support, moves synchronously with the specific gravity sieve, and is located below a feeding hopper of a feeding device. The stone storage groove is welded below the cloth plate and is composed of a front inclined plate, a bottom plate, a rear inclined plate, a rear inclined plate discharge slide plate and a discharge port slide plate. When the application works, seeds with relatively light specific gravity jump over the rear inclined plate into the specific gravity sieve, and stones with relatively large specific gravity fall into the stone storage groove, high-efficiency stone removal is realized, key dimensions of the stone storage groove are adjusted according to different crop seeds such as wheat, beans and sunflowers, the stone removal rate is high, the structure is simple, and the specific gravity sieve screen is effectively prevented from being abraded by stones.

Description

Technical Field

[0001] This invention relates to the field of agricultural seed cleaning and grain processing technology, specifically to a novel cloth stone storage device for a seed double screening machine. Background Technology

[0002] After harvest, seeds and grains often contain weed seeds, straw, stones, other crop grains, as well as immature, broken, or diseased grains. Cleaning and processing remove these impurities and grade the seeds, significantly improving seed purity, thousand-grain weight, germination rate, and commercial value, which is beneficial for storage and transportation. Screening machines play a vital role in agricultural restructuring and increasing farmers' income.

[0003] Improving the performance of screening machines is key to enhancing overall machine efficiency and is a crucial issue that must be addressed in the large-scale development of cleaning machines. Indicators for evaluating screening equipment performance include productivity, impurity content, cleaning loss rate, and equipment lifespan. Currently, domestic grain and seed screening and cleaning machines still suffer from problems such as high impurity content and short equipment lifespan, especially gravity screens where the screen plates are prone to premature wear, deformation, or damage. The main reason for this is that stones mixed with the seeds enter the gravity screen along with the seeds. These stones roll and rub against the screen surface for extended periods, causing destructive wear on the screen plates, leading to larger screen openings, reduced screening quality and production efficiency, and increased operating costs. Summary of the Invention

[0004] The purpose of this invention is to provide a novel cloth stone storage device for a seed compound screening machine, so as to solve the problem in the prior art that stones enter the gravity screen with the seeds in the screening machine, resulting in severe wear of the screen plate and a decline in screening quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a novel material storage device for a seed screening machine, comprising a seed screening machine, wherein the seed screening machine is provided with a feeding device, the feeding device is provided with a feeding hopper, the seed screening machine is provided with a gravity screen, the gravity screen is provided with a gravity screen frame, and further comprising a material storage device, a storage trough, a fixed bracket, a cleaning port baffle, a feeding side plate, a feeding chute, a feeding baffle, and a material distribution plate;

[0006] The cloth and stone storage device is installed on the gravity screen frame of the seed screening machine through the fixed bracket, moves synchronously with the gravity screen, and is located below the feeding hopper of the feeding device.

[0007] The stone storage trough is welded below the material distribution plate. The stone storage trough consists of a front inclined plate, a bottom plate, a rear inclined plate, a rear inclined plate discharge slide plate, and a discharge port slide plate.

[0008] The distance between the lower edge of the discharge port below the feeding hopper and the cloth plate is A, the height of the rear inclined plate is K, the height of the rear inclined plate is E higher than that of the front inclined plate, the outward tilt angle of the rear inclined plate is θ, the elevation angle of the discharge slide plate of the rear inclined plate to the horizontal plane is β, and the width of the bottom plate is S.

[0009] Furthermore, the cloth stone storage device is made of stamped steel plate.

[0010] Furthermore, the bottom plate is provided with a stone removal port in the middle, and a removal port baffle and baffle fixing bolts are installed above the stone removal port.

[0011] Furthermore, the front inclined plate is connected to the fabric plate.

[0012] Furthermore, the stone storage trough is made by stamping from a single piece of steel plate.

[0013] Furthermore, the feeding device is installed on the frame of the seed screening machine, located above the gravity sieve.

[0014] Furthermore, when used for screening wheat and cereal seeds, the height of the rear inclined plate K = 29-32 mm, the height difference E = 11-12 mm, the width of the bottom plate S = 35-38 mm, the outward tilt angle of the rear inclined plate θ = 96°-98°, the elevation angle of the discharge slide plate of the rear inclined plate β = 6°-8°, and the distance A between the lower edge of the feeding hopper and the material distribution plate = 28-30 mm.

[0015] Furthermore, when used for screening bean seeds, the height of the rear inclined plate K = 95-105 mm, the height difference E = 15-17 mm, the width of the bottom plate S = 85-90 mm, the outward tilt angle of the rear inclined plate θ = 96°-98°, the elevation angle of the discharge slide plate of the rear inclined plate β = 6°-8°, and the distance A between the lower edge of the feeding hopper and the material distribution plate = 65-70 mm.

[0016] Furthermore, when used for screening sunflower and melon seeds, the height of the rear inclined plate K = 60-70 mm, the height difference E = 13-15 mm, the width of the bottom plate S = 60-65 mm, the outward tilt angle of the rear inclined plate θ = 96°-98°, the elevation angle of the discharge slide plate of the rear inclined plate β = 6°-8°, and the distance A between the lower edge of the feeding hopper and the cloth plate = 35-50 mm.

[0017] Compared with the prior art, the present invention provides a novel cloth stone-removing device for a seed compound screening machine. According to experimental tests, the stone removal rate of seeds such as wheat, beans, and sunflower can reach 95% to 97%, significantly reducing the number of stones entering the gravity screen.

[0018] Pre-intercepting and collecting stones prevents prolonged friction between stones and the screen surface, extending the service life of the gravity screen and reducing maintenance costs;

[0019] The device is made of stamped and welded steel plates, which is low in cost and suitable for small and medium-sized enterprises to retrofit their existing seed screening machines.

[0020] By adjusting the key dimensional parameters of the stone storage trough, it can be applied to the cleaning of seeds of various crops such as wheat, beans, sunflowers, and melons. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a front view of a novel compound seed screening machine according to the present invention;

[0023] Figure 2 This is a top view of a novel compound seed screening machine according to the present invention;

[0024] Figure 3 This is a front view of the cloth and stone storage device in this invention;

[0025] Figure 4 This is a top view of the cloth and stone storage device in this invention;

[0026] Figure 5 This is a side view of the cloth and stone storage device in this invention;

[0027] Figure 6 for Figure 3 Sectional view at point AA;

[0028] Figure 7 for Figure 6 A magnified view of a section at point B.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Seed screening machine; 2. Feeding device; 3. Gravity screen; 4. Feeding hopper; 5. Material distribution and stone storage device; 6. Fixed bracket; 7. Feeding side plate; 8. Feeding baffle; 9. Stone storage trough; 10. Material distribution plate; 11. Gravity screen frame; 12. Feeding chute; 13. Cleaning port baffle; 14. Baffle fixing bolts; 9-1. Front inclined plate; 9-2. Bottom plate; 9-3. Rear inclined plate; 9-4. Rear inclined plate discharge slide plate; 9-5. Discharge port slide plate; 9-6. Stone removal port. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1:

[0033] like Figure 1 , Figure 2 As shown in the figure, this embodiment provides a novel cloth and stone storage device for a seed double screening machine, which is applied in a seed screening machine 1. The seed screening machine 1 includes core components such as a frame, a feeding device 2, and a gravity screen 3. The feeding device 2 is fixedly installed on the top of the frame, above the gravity screen 3, and has a feeding hopper 4 at its front end.

[0034] The material storage device 5 of the present invention is specifically designed to be installed between the feeding hopper 4 and the gravity screen 3, as follows: Figure 3 , Figure 4 , Figure 5 As shown, the material storage device 5 includes a material storage trough 9, a fixed bracket 6, a material cleaning port baffle 13, a feeding side plate 7, a feeding chute 12, a feeding baffle 8, and a material distribution plate 10.

[0035] The entire material storage device 5 is rigidly mounted on the gravity screen frame 11 of the seed screening machine 1 by bolts through the fixed brackets 6 on both sides. This means that when the gravity screen 3 reciprocates during operation, the material storage device 5 will move synchronously, in the same direction and with the same amplitude. At the same time, the entire device is located directly below the discharge port of the feeding hopper 4, ensuring that the material falling from the feeding hopper 4 can accurately fall into the working area of ​​the material plate 10.

[0036] The material feeding plate 10, feeding side plate 7, feeding chute 12, feeding baffle 8, and stone storage trough 9 of the material feeding and stone storage device 5 are all integrally formed from a single piece of high-quality steel plate (recommended thickness 2.5-3mm) through stamping, bending, and welding processes. This process ensures the structural strength and dimensional accuracy of the device, and is low in cost, making it suitable for mass production.

[0037] The material distribution plate 10 is located in the middle of the device. Its front end is connected to the feeding chute 12, and its rear end is welded to the front inclined plate 9-1 of the stone storage trough 9. Its main function is to receive the material falling from the feeding hopper 4 and to spread it evenly and convey it backward using vibration.

[0038] The feeding side plate 7 and the feeding baffle 8 are respectively installed on the sides and rear of the material distribution plate 10 to limit the lateral movement range of the material, prevent the material from splashing out from the side or rear during vibration, and ensure that all materials are processed by the stone storage trough 9.

[0039] The stone storage trough 9 is welded to the bottom of the fabric plate 10 and extends along the entire width of the fabric plate 10, such as... Figure 6 , Figure 7 As shown, the stone storage tank 9 consists of five functional parts:

[0040] The upper edge of the front inclined plate 9-1 is smoothly connected to the end of the fabric plate 10, and the lower edge is connected to the bottom plate 9-2. Its inclination direction is downward and backward from the fabric plate 10.

[0041] The bottom plate 9-2 is a horizontal or slightly inclined flat plate, which forms the bottom of the stone storage tank 9 and is used to store the intercepted stones. A rectangular through hole is opened in the middle of the bottom plate 9-2, which is the stone removal port 9-6.

[0042] The rear ramp 9-3 extends upward and outward from the rear edge of the base plate 9-2.

[0043] The rear ramp discharge slide 9-4 extends backward and upward from the top edge of the rear ramp 9-3, forming a smooth slide.

[0044] The discharge slide plate 9-5 extends backward from the end of the rear inclined plate discharge slide plate 9-4, and its end is located above the screen surface of the gravity screen 3.

[0045] Key dimensions and processing steps for wheat and cereals:

[0046] When this device is used to clean small, lightweight crop seeds such as wheat, barley, and rice (cereals), the key size parameters should be configured within the following ranges (see...). Figure 7 ):

[0047] The height K of the rear ramp 9-3 is 29-32 mm;

[0048] The height difference between the front ramp 9-1 and the rear ramp 9-3 is E=11~12mm;

[0049] Base plate 9-2 width S=35~38mm;

[0050] The outward tilt angle of the rear ramp 9-3 is θ = 96°~98°;

[0051] The rear inclined plate discharge slide plate 9-4 has an elevation angle β=6°~8°;

[0052] The distance A from the lower edge of the feeding hopper 4 to the cloth plate 10 is 28-30mm.

[0053] Working principle: After the screening machine is started, the gravity screen 3 drives the material storage device 5 to reciprocate with high frequency and small amplitude. The mixture of seeds and stones falls from the discharge port of the feeding hopper 4 into the material plate 10. Driven by the vibration, the material is quickly spread on the material plate 10 and moves backward (i.e., in the direction of the stone storage trough 9). Due to the difference in specific gravity, it begins to stratify in the vertical direction: the stones with a larger specific gravity sink down and contact the material plate 10, while the seeds with a smaller specific gravity are located on the upper layer.

[0054] When the material moves to the end of the cloth plate 10 and falls onto the front inclined plate 9-1, the resultant force generated by the vibration is directed diagonally upward and backward, which causes particles with different specific gravities to produce different parabolic trajectories:

[0055] Seed (low specific gravity): After being subjected to the resultant force, it gains a large initial velocity and flight distance, and can easily cross the rear ramp 9-3 with a height of 29-32mm, and land on the rear ramp discharge slide plate 9-4.

[0056] Stones (high density): They have high inertia, and the vibration gives them a smaller speed and flight distance. After they jump over the front ramp 9-1, their flight arc quickly drops, and they cannot reach the height of the rear ramp 9-3, so they fall accurately into the trough formed by the bottom plate 9-2 and the rear ramp 9-3.

[0057] Guided flow and discharge: Seeds that successfully pass over the rear inclined plate 9-3 slide smoothly down the discharge slide plate 9-4 and discharge port slide plate 9-5 of the rear inclined plate with an elevation angle β of 6° to 8° onto the screen surface of the gravity screen 3 for subsequent screening and grading.

[0058] The stones falling into the stone storage tank 9 will gradually accumulate. The operator can stop the machine periodically, open the removal port baffle located on the bottom plate 9-2 by tightening the baffle fixing bolt 14, and discharge the stones through the stone removal port 9-6 to restore the interception capacity of the stone storage tank 9.

[0059] Example 2:

[0060] This embodiment is basically the same as the previous embodiment. The difference is that, since legume seeds (such as soybeans, mung beans, and kidney beans) have larger particle size, heavier individual weight, and higher overall specific gravity, the geometric dimensions of the stone storage trough 9 need to be specifically enlarged to ensure that the light bean particles can be successfully screened to the specific gravity sieve 3, while the heavy stones are effectively intercepted.

[0061] Key dimension adjustments:

[0062] The height K of the rear inclined plate 9-3 is 95~105mm.

[0063] The height difference between the front ramp 9-1 and the rear ramp 9-3 is E=15~17mm.

[0064] The width of the base plate 9-2 is S=85~90mm.

[0065] The outward tilt angle of the rear ramp 9-3 is θ = 96°~98° (same as in Example 1).

[0066] The rear inclined plate discharge slide plate 9-4 has an elevation angle β of 6°~8° (same as in Example 1).

[0067] The distance A from the lower edge of the feeding hopper 4 to the cloth plate 10 is 65-70mm.

[0068] Working principle: Compared with Example 1, the following three points are key to bean selection:

[0069] Increase the material drop gap (A value): The distance A between the feed hopper 4 and the distribution plate 10 is increased to 65-70mm. This is because the beans are large in volume, and a gap that is too small will cause the material to block the discharge port. The increased gap can ensure that the mixture of beans and stones falls smoothly and continuously onto the distribution plate 10.

[0070] Deepen the stone storage trough 9 (increase the K value): Increase the height K of the rear inclined plate 9-3 to 95-105mm. If the K value is too small, some larger or heavier stones (5-10mm in diameter) may gain enough kinetic energy during vibration and accidentally jump over the low rear inclined plate 9-3, causing "stone leakage". Deepening the rear inclined plate 9-3 provides a higher "stone barrier" to ensure that all stones are difficult to jump over.

[0071] Widened bottom plate 9-2 (increased S value): The width S of bottom plate 9-2 is increased to 85-90mm, which allows for a wider range of bean-shaped pebbles. If a large pebble falls into a shallow and narrow trough, it may get stuck between the front inclined plate 9-1 and the rear inclined plate 9-3, affecting the falling of subsequent pebbles. The widened bottom plate 9-2 provides a larger space for pebbles and a buffer area, ensuring that pebbles can fall smoothly to the bottom of the trough and be collected.

[0072] Example 3:

[0073] This embodiment is basically the same as the previous embodiment, except that a medium-sized stone storage trough 9 is used for crops such as sunflower seeds, pumpkin seeds, and watermelon seeds, which have irregular shapes, large individual differences, and a specific gravity between wheat and beans.

[0074] Key dimension adjustments:

[0075] The height K of the rear inclined plate 9-3 is 60-70mm.

[0076] The height difference between the front ramp 9-1 and the rear ramp 9-3 is E=13~15mm.

[0077] The width of the base plate 9-2 is S=60~65mm.

[0078] The outward tilt angle of the rear inclined plate 9-3 is θ = 96°~98°.

[0079] The rear inclined plate discharge slide plate 9-4 has an elevation angle β=6°~8°.

[0080] The distance A from the lower edge of the feeding hopper 4 to the cloth plate 10 is 35-50mm.

[0081] Working principle: Sunflower seeds are flat and ridged, making them easy to stand up or roll during vibration. The medium-height rear sloping plate 9-3 (60-70mm) can prevent heavy stones (sometimes similar in size to the seeds) from passing over, without hindering the normal jumping and passage of these irregular seeds.

[0082] The A value (35-50mm) is set to take into account the characteristics that melon seeds may have a small amount of pulp residue or a rough surface. This gap can ensure smooth material flow and avoid excessive dispersion of material on the cloth plate 10 due to excessive gap, thus reducing screening efficiency.

[0083] Basic dimensions and test results of various crop stone storage troughs: (see table below)

[0084] Basic dimensions and test statistics of stone storage troughs for screening various crop seeds

[0085] Crop varieties K (mm) E (mm) S (mm) θ β A (mm) Stone removal rate (%) Stone particle size range (mm) wheat, rice 29～32 11～12 35～38 96°～98° 6°～8° 28～30 95～97 3～8 Legumes 95～105 15～17 85～90 96°～98° 6°～8° 65～70 95～97 5～10 Sunflowers, melons 60～70 13～15 60～65 96°～98° 6°～8° 35～50 95～97 5～10

[0086] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A novel cloth storage device for a seed screening machine, comprising a seed screening machine (1), wherein the seed screening machine (1) is provided with a feeding device (2), the feeding device (2) is provided with a feeding hopper (4), the seed screening machine (1) is provided with a gravity screen (3), and the gravity screen (3) is provided with a gravity screen frame (11), characterized in that, It also includes a material storage device (5), a material storage trough (9), a fixed bracket (6), a material cleaning port baffle (13), a feeding side plate (7), a feeding chute (12), a feeding baffle (8), and a material distribution plate (10); The cloth storage device (5) is installed on the gravity screen frame (11) of the seed screening machine (1) via the fixed bracket (6), moves synchronously with the gravity screen (3), and is located below the feeding hopper (4) of the feeding device (2). The stone storage trough (9) is welded below the material distribution plate (10). The stone storage trough (9) is composed of a front inclined plate (9-1), a bottom plate (9-2), a rear inclined plate (9-3), a rear inclined plate discharge slide plate (9-4), and a discharge port slide plate (9-5). The distance between the lower edge of the discharge port below the feeding hopper (4) and the cloth plate (10) is A, the height of the rear inclined plate (9-3) is K, the height of the rear inclined plate (9-3) is E higher than that of the front inclined plate (9-1), the outward tilt angle of the rear inclined plate (9-3) is θ, the elevation angle of the discharge slide plate (9-4) of the rear inclined plate to the horizontal plane is β, and the width of the bottom plate (9-2) is S.

2. The cloth-based stone-holding device for a novel seed double-screening machine according to claim 1, characterized in that, The cloth storage device (5) is made of steel plate by stamping.

3. The cloth-based stone-holding device for a novel seed double-screening machine according to claim 1, characterized in that, The bottom plate (9-2) is provided with a stone removal port (9-6) in the middle, and a removal port baffle and baffle fixing bolts (14) are installed above the stone removal port (9-6).

4. The cloth-based stone-holding device for a novel seed double-screening machine according to claim 1, characterized in that, The front inclined plate (9-1) is connected to the fabric plate (10).

5. The cloth-based stone-holding device for a novel seed double-screening machine according to claim 1, characterized in that, The stone storage trough (9) is made by stamping from a single piece of steel plate.

6. The cloth-based stone-holding device for a novel seed double-screening machine according to claim 1, characterized in that, The feeding device (2) is installed on the frame of the seed screening machine (1) and is located above the gravity sieve (3).

7. The cloth stone storage device for a novel seed double screening machine according to claim 1, characterized in that, When used for screening wheat and cereal seeds, the height of the rear inclined plate (9-3) is K=29~32mm, the height difference is E=11~12mm, the width of the bottom plate (9-2) is S=35~38mm, the outward tilt angle of the rear inclined plate (9-3) is θ=96°~98°, the elevation angle of the rear inclined plate discharge slide plate (9-4) is β=6°~8°, and the distance between the lower edge of the feeding hopper (4) and the cloth plate (10) is A=28~30mm.

8. The cloth-based stone-holding device for a novel seed double-screening machine according to claim 1, characterized in that, When used for screening bean seeds, the height of the rear inclined plate (9-3) is K=95~105mm, the height difference is E=15~17mm, the width of the bottom plate (9-2) is S=85~90mm, the outward tilt angle of the rear inclined plate (9-3) is θ=96°~98°, the elevation angle of the rear inclined plate discharge slide plate (9-4) is β=6°~8°, and the distance between the lower edge of the feeding hopper (4) and the cloth plate (10) is A=65~70mm.

9. A novel cloth-based stone-holding device for a seed compound screening machine according to claim 1, characterized in that, When used for screening sunflower and melon seeds, the height of the rear inclined plate (9-3) is K=60~70mm, the height difference is E=13~15mm, the width of the bottom plate (9-2) is S=60~65mm, the outward tilt angle of the rear inclined plate (9-3) is θ=96°~98°, the elevation angle of the rear inclined plate discharge slide plate (9-4) is β=6°~8°, and the distance between the lower edge of the feeding hopper (4) and the cloth plate (10) is A=35~50mm.

Images