Screening device for agricultural product processing
By using a multi-stage screening structure and an airflow impurity removal device for agricultural products, the problems of low screening efficiency and poor quality in existing technologies have been solved, and multi-level fine grading and efficient screening of agricultural products have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIWU HONGSU AGRI DEV CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-15
AI Technical Summary
Existing agricultural product screening devices suffer from problems such as the inability of a single screen to achieve multi-level fine grading and unreasonable design of the vibration mechanism, resulting in low screening efficiency and poor quality.
By employing a multi-stage screening structure and a synergistic reciprocating motion mechanism and shaking mechanism, combined with airflow impurity removal, multi-level fine grading and efficient screening of agricultural products can be achieved.
This enables multi-level and refined grading of agricultural products, improving screening accuracy and efficiency, reducing impurity residue, and enhancing the cleanliness and flowability of agricultural products.
Smart Images
Figure CN224237558U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural product processing, and in particular to a screening device for agricultural product processing. Background Technology
[0002] Screening is a crucial step in agricultural product processing, aiming to separate agricultural products of different specifications and qualities to meet the needs of subsequent processing and market sales. Currently, there are many types of agricultural product screening devices on the market, but they all share some common problems that hinder the improvement of screening efficiency and quality.
[0003] In existing technologies, most agricultural product screening devices use a single screen structure for screening. This traditional screening method has significant drawbacks:
[0004] On the one hand, a single sieve can only achieve simple grading and screening, and cannot perform multi-level and refined classification of agricultural products, resulting in a large range of specifications for the screened agricultural products;
[0005] On the other hand, the vibration mechanism of traditional screening devices is not designed reasonably, and the range of vibration frequency and amplitude adjustment is limited, which can easily cause agricultural products to accumulate or clog the screen.
[0006] Based on this, we propose a screening device for agricultural product processing. Utility Model Content
[0007] To address the technical problem that traditional single-screen sieves can only achieve simple grading and screening, this utility model provides a screening device for agricultural product processing.
[0008] The present invention is achieved by the following technical solution: a screening device for agricultural product processing, including a supporting scaffold, a device frame fixedly connected to the top of the supporting scaffold, a feeding hopper provided at the top of the device frame, a reciprocating motion mechanism connected to the device frame, and a vibrating screen mechanism connected to the reciprocating motion mechanism.
[0009] The reciprocating motion mechanism includes a working motor fixedly connected to the device frame, a first rotating disk connected to the output end of the working motor, a transmission belt sleeved on the surface of the first rotating disk, and a second rotating disk and a third rotating disk sleeved on the surface of the transmission belt.
[0010] The inner side of the second rotating disk is connected to a fan blade rod, which is rotatably mounted on the device frame. A fan blade plate is installed on the surface of the fan blade rod and is installed inside the fan cavity. An airflow outlet is opened at the top of the fan cavity, which is fixed to the device frame. The inner side of the third rotating disk is connected to a rotating rod, the two ends of which are limited inside the bearing seats, which are fixedly connected to the device frame. A flip plate is connected to the top of the rotating rod, and a moving rod is rotatably connected to the surface of the flip plate. A receiving plate is hinged to the top of the moving rod and is fixedly connected to the bottom of the screening box.
[0011] The vibrating screen mechanism includes a screening box. A primary screening plate is provided on the top surface of the screening box. A primary screening material discharge channel is connected to the bottom of the primary screening plate. A secondary screening plate is installed in the center of the screening box. Both the primary screening plate and the secondary screening plate are provided with holes. The secondary screening plate is located in the middle of the screening box, dividing the interior of the screening box into two parts. A secondary screening material discharge channel is connected to the bottom of the secondary screening plate. A material discharge port is connected to the bottom of the screening box.
[0012] A swaying mechanism is installed between the screening box and the support on the device frame. The swaying mechanism includes a fixed block, which is fixedly connected to the surface of the screening box. A lower support is hinged to the fixed block via a motion axis frame. A connecting rod is fixedly connected to the top of the lower support, and an upper support is connected to the top of the connecting rod. The upper support is hinged to a fixed plate via a deflection axis frame. The fixed plate is fixedly connected to the support on the device frame.
[0013] The working motor drives the transmission system to simultaneously achieve vibratory screening and air-powered impurity removal. Under the coordinated action of the reciprocating motion mechanism and the shaking mechanism, the screening box completes the entire process of grading agricultural products by particle size and removing light impurities through multi-stage screening by the primary screening plate and the secondary screening plate, combined with the air blowing at the air outlet. Finally, agricultural products of different specifications are discharged from the primary screening discharge channel, the secondary screening discharge channel and the discharge port respectively.
[0014] As a further optimization of this utility model, when the second rotating disk rotates, it drives the fan blade rod and fan blade plate to rotate at high speed in the fan cavity, generating airflow and blowing it out from the airflow outlet towards the screening box. The airflow acts on the agricultural products during the screening process, separating light particles such as debris and empty shells from the heavier agricultural products. Impurities are discharged with the airflow or settle into specific areas, improving the cleanliness of the screened agricultural products.
[0015] As a further optimization of this utility model, after the working motor is powered on, it drives the first rotating disk to rotate, and synchronously drives the second and third rotating disks to rotate via a transmission belt, forming a power transmission system. When the third rotating disk rotates, the rotating rod connected to its inner side performs reciprocating linear motion within the bearing seat, which pushes the receiving plate up and down through the flipping plate and the moving rod, thereby causing the screening box to vibrate.
[0016] As a further optimization of this utility model, the primary screening plate is located at the top of the screening box, the secondary screening plate is located in the middle of the screening box, and the secondary screening plate is located directly below the primary screening plate. The aperture of the primary screening plate is larger than that of the secondary screening plate.
[0017] As a further optimization of this utility model, agricultural products fall from the feed hopper into the primary screening plate at the top of the screening box. Larger particles are intercepted by the primary screening plate and discharged through the primary screening discharge channel; smaller particles fall into the secondary screening plate below.
[0018] As a further optimization of this utility model, the secondary sieve plate has a smaller aperture than the primary sieve plate, which further filters medium-sized particles. Particles that meet the aperture size are discharged through the secondary sieve discharge channel, while the smallest particles or impurities are discharged from the discharge port at the bottom of the screening box.
[0019] As a further optimization of this utility model, when the screening box is subjected to vibration, the shaking mechanism provides multi-directional shaking freedom through the lower support, connecting rod, and upper support of the linkage structure, which avoids agricultural products from accumulating on the screen plate and further optimizes the screening efficiency.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0021] 1. This utility model utilizes a multi-stage screening structure with a primary screening plate and a secondary screening plate. The primary screening plate has a larger aperture than the secondary screening plate, enabling multi-level and refined grading of agricultural products. Larger particles are discharged through the primary screening channel, medium-sized particles are discharged through the secondary screening channel, and the smallest particles or impurities are discharged from the discharge port. This achieves efficient separation of agricultural products of different specifications, solving the problem of coarse grading using traditional single-mesh sieves and improving screening accuracy.
[0022] 2. This utility model uses a working motor to drive a second rotating disk, which in turn causes the fan blade rod and fan blade plate to rotate within the fan cavity, generating airflow. This airflow is then blown out of the air outlet into the screening box. The airflow can separate light impurities such as debris and empty shells from the agricultural products. The impurities are discharged or settle with the airflow, eliminating the need for secondary manual cleaning, thus improving the cleanliness of the agricultural products and compensating for the lack of wind-powered impurity removal function in existing devices.
[0023] 3. This utility model utilizes the coordinated action of a reciprocating motion mechanism and a shaking mechanism. The third rotating disk drives the rotating rod to reciprocate within the bearing seat. The flipping plate, moving rod, and receiving plate cause the screening box to vibrate. Simultaneously, the linkage structure of the shaking mechanism provides multi-directional shaking freedom. The combination of these two mechanisms prevents agricultural products from accumulating and clogging on the screen plate, enhances material flowability, and significantly improves screening efficiency compared to the limited adjustment range of traditional vibration mechanisms. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0025] Figure 2 This utility model Figure 1 Diagram of the disassembly and assembly of the middle structure;
[0026] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure of region A in the middle;
[0027] Figure 4 This utility model Figure 1 Enlarged schematic diagram of the structure of region B in the middle;
[0028] Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure in region C.
[0029] Explanation of key symbols:
[0030] 1. Supporting scaffold; 2. Device frame; 3. Reciprocating motion mechanism; 4. Vibrating screen mechanism; 5. Shaking mechanism; 31. Working motor; 32. First rotating disk; 33. Transmission belt; 34. Second rotating disk; 341. Fan blade rod; 342. Fan blade plate; 343. Fan cavity; 344. Airflow outlet; 35. Third rotating disk; 36. Rotating rod; 361. Bearing seat; 37. Tilting plate; 38. Moving rod; 39. Receiving plate; 41. Screening box; 42. Primary screening plate; 43. Primary screening discharge channel; 44. Secondary screening plate; 45. Secondary screening discharge channel; 46. Discharge port; 51. Fixing block; 52. Lower support; 53. Moving shaft frame; 54. Connecting rod; 55. Upper support; 56. Deflection shaft frame; 57. Fixing plate; 6. Feed hopper. Detailed Implementation
[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0032] Example 1:
[0033] Please combine Figures 1-5 This embodiment proposes a screening device for agricultural product processing, including a supporting scaffold 1, a device frame 2 fixedly connected to the top of the supporting scaffold 1, a feeding hopper 6 provided at the top of the device frame 2, a reciprocating motion mechanism 3 connected to the device frame 2, and a vibrating screen mechanism 4 connected to the reciprocating motion mechanism 3.
[0034] The reciprocating swaying mechanism 3 includes a working motor 31 fixedly connected to the top of the device frame 2. The output end of the working motor 31 is connected to a first rotating disk 32. A transmission belt 33 is sleeved on the surface of the first rotating disk 32. A second rotating disk 34 and a third rotating disk 35 are sleeved on the surface of the transmission belt 33. The transmission belt 33 can be a chain belt structure, and the first rotating disk 32, the second rotating disk 34 and the third rotating disk 35 can be a chain disc or sprocket structure.
[0035] The inner side of the second rotating disk 34 is connected to a fan blade rod 341, which is rotatably mounted on the device frame 2. A fan blade plate 342 is mounted on the surface of the fan blade rod 341 and is installed inside the fan cavity 343. An airflow outlet 344 is opened at the top of the fan cavity 343, facing the vibrating screen mechanism 4. When the second rotating disk 34 rotates, it drives the fan blade rod 341 and the fan blade plate 342 to rotate at high speed inside the fan cavity 343, generating airflow and blowing it out from the airflow outlet 344 toward the screening box 41 of the vibrating screen mechanism 4. The airflow acts on the agricultural products during the screening process, separating light particles such as debris and empty shells from heavier agricultural products. Impurities are discharged with the airflow or settle into a specific area, improving the cleanliness of the screened agricultural products.
[0036] The inner side of the third rotating disk 35 is connected to a rotating rod 36. The two ends of the rotating rod 36 are limited to rotate inside the bearing seat 361, and the bearing seat 361 is fixedly connected to the device frame 2.
[0037] The top of the rotating rod 36 is connected to a flip plate 37, and a moving rod 38 is rotatably connected to the surface of the flip plate 37. A receiving plate 39 is hinged to the top of the moving rod 38, and the receiving plate 39 is fixedly connected to the bottom of the screening box 41.
[0038] The specific technical solution involves the following power source startup: After the working motor 31 is powered on, it drives the first rotating disk 32 to rotate, which in turn drives the second rotating disk 34 and the third rotating disk 35 to rotate synchronously through the transmission belt 33, thus forming a power transmission system.
[0039] Operation of the reciprocating motion mechanism: When the third rotating disk 35 rotates, the rotating rod 36 connected to its inner side performs reciprocating linear motion in the bearing seat 361, which pushes the receiving plate 39 up and down through the flip plate 37 and the moving rod 38, thereby causing the screening box 41 to vibrate.
[0040] The vibrating screen mechanism 4 includes a screening box 41. A primary screening plate 42 is provided on the top surface of the screening box 41. A primary screening material discharge channel 43 is connected to the bottom of the primary screening plate 42. A secondary screening plate 44 is installed in the center of the screening box 41. The primary screening plate 42 is located at the top of the screening box 41, and the secondary screening plate 44 is located in the middle of the screening box 41. The secondary screening plate 44 is located directly below the primary screening plate 42. The aperture of the primary screening plate 42 is larger than the aperture of the secondary screening plate 44.
[0041] The secondary screen plate 44 is located in the middle of the screening box 41, dividing the interior of the screening box 41 into two parts; the secondary screen plate 44 is connected to the lower part of the plate surface and the screening box 41 is connected to the bottom of the box body with the discharge port 46.
[0042] The specific technical solution is as follows: primary screening: agricultural products fall from the feed hopper 6 into the primary screening plate 42 at the top of the screening box 41. Larger particles are intercepted by the primary screening plate 42 and discharged through the primary screening discharge channel 43; smaller particles fall into the secondary screening plate 44 below.
[0043] Secondary screen: The aperture of the secondary screen plate 44 is smaller than that of the primary screen plate 42, further screening medium-sized particles. Particles that meet the aperture size are discharged through the secondary screen discharge channel 45, while the smallest particles or impurities are discharged from the discharge port 46 at the bottom of the screening box 41.
[0044] A swaying mechanism 5 is installed between the screening box 41 and the bracket on the device frame 2. The swaying mechanism 5 includes a fixed block 51, which is fixedly connected to the surface of the screening box 41. A lower bracket 52 is hinged to the fixed block 51 through a motion shaft frame 53.
[0045] A connecting rod 54 is fixedly connected to the top of the lower bracket 52, and an upper bracket 55 is connected to the top of the connecting rod 54. The upper bracket 55 is hinged to the fixed plate 57 via a deflection shaft frame 56, and the fixed plate 57 is fixedly connected to the bracket of the device frame 2.
[0046] In the specific technical solution, the screening box 41 is connected to the device frame 2 via a shaking mechanism 5. A fixing block 51 is fixed to the surface of the screening box 41 and hinged to the lower support 52 via a motion shaft frame 53. The lower support 52 is hinged to the fixing plate 57 via a connecting rod 54 and an upper support 55. When the screening box 41 is subjected to vibration, the shaking mechanism 5 provides multi-directional shaking freedom through the linkage structure of the lower support 52, connecting rod 54, and upper support 55, preventing agricultural products from accumulating on the screening plate and further optimizing screening efficiency.
[0047] In summary, the working motor 31 drives the transmission system to simultaneously achieve vibratory screening and air-powered impurity removal. Under the coordinated action of the reciprocating motion mechanism 3 and the shaking mechanism 5, the screening box 41 completes the entire process of grading agricultural products by particle size and removing light impurities through multi-stage screening via the primary screening plate 42 and the secondary screening plate 44, combined with the airflow blowing from the air outlet 344. Finally, agricultural products of different specifications are discharged from the primary screening discharge channel 43, the secondary screening discharge channel 45, and the discharge port 46, respectively.
[0048] The working principle of the screening device for agricultural product processing described in this patent is as follows:
[0049] I. Power Transmission and Vibrating Screening Principle
[0050] Power source start-up: After the working motor 31 is powered on, it drives the first rotating disk 32 to rotate, and synchronously drives the second rotating disk 34 and the third rotating disk 35 to rotate through the transmission belt 33, forming a power transmission system.
[0051] Operation of the reciprocating motion mechanism: When the third rotating disk 35 rotates, the rotating rod 36 connected to its inner side rotates in the bearing seat 361, and pushes the receiving plate 39 up and down through the flip plate 37 and the moving rod 38, thereby causing the screening box 41 to vibrate.
[0052] Multi-stage screening process:
[0053] Primary screening: Agricultural products fall from the feed hopper 6 into the primary screening plate 42 at the top of the screening box 41. Larger particles are intercepted by the primary screening plate 42 and discharged through the primary screening discharge channel 43; smaller particles fall into the secondary screening plate 44 below.
[0054] Secondary screen: The aperture of the secondary screen plate 44 is smaller than that of the primary screen plate 42, further screening medium-sized particles. Particles that meet the aperture size are discharged through the secondary screen discharge channel 45, while the smallest particles or impurities are discharged from the discharge port 46 at the bottom of the screening box 41.
[0055] II. Principle of Wind-Powered Impurity Removal
[0056] Airflow generation: When the second rotating disk 34 rotates, it drives the fan blade rod 341 and fan blade plate 342 to rotate at high speed in the fan cavity 343, generating airflow and blowing it out from the airflow outlet 344 towards the screening box 41.
[0057] Impurity separation: Airflow acts on agricultural products during the screening process, separating light particles such as debris and empty shells from heavier agricultural products. Impurities are discharged with the airflow or settle to specific areas, improving the cleanliness of the screened agricultural products.
[0058] III. Coordinating Effect of the Shaking Mechanism
[0059] The screening box 41 is connected to the device frame 2 via a shaking mechanism 5. A fixing block 51 is fixed to the surface of the screening box 41 and is hinged to the lower support 52 via a motion axis frame 53. The lower support 52 is hinged to the fixing plate 57 via a connecting rod 54 and an upper support 55. When the screening box 41 is subjected to vibration, the shaking mechanism 5 provides multi-directional shaking freedom through the linkage structure of the lower support 52, connecting rod 54, and upper support 55, preventing agricultural products from accumulating on the screening plate and further optimizing screening efficiency.
[0060] IV. Summary of Overall Work Process
[0061] The working motor 31 drives the transmission system to simultaneously realize vibration screening and air-powered impurity removal. Under the coordinated action of the reciprocating motion mechanism 3 and the shaking mechanism 5, the screening box 41 completes the entire process of grading agricultural products by particle size and removing light impurities through multi-stage screening by the primary screening plate 42 and the secondary screening plate 44, combined with the air blowing of the air outlet 344. Finally, agricultural products of different specifications are discharged from the primary screening discharge channel 43, the secondary screening discharge channel 45 and the discharge port 46 respectively.
[0062] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A screening device for agricultural product processing, comprising a supporting scaffold (1), characterized in that, The top of the supporting scaffold (1) is fixedly connected to a device frame (2), the top of the device frame (2) is provided with a feeding hopper (6), the device frame (2) is connected to a reciprocating motion mechanism (3), and the reciprocating motion mechanism (3) is connected to a vibrating screen mechanism (4). The vibrating screen mechanism (4) includes a screening box (41), a primary screening plate (42) is provided on the top surface of the screening box (41), a primary screening material discharge channel (43) is connected to the bottom of the primary screening plate (42), a secondary screening plate (44) is installed in the center of the screening box (41), both the primary screening plate (42) and the secondary screening plate (44) are provided with holes, a secondary screening material discharge channel (45) is connected to the bottom of the secondary screening plate (44), and a discharge port (46) is connected to the bottom of the screening box (41).
2. The screening device for agricultural product processing as described in claim 1, characterized in that, The primary screening plate (42) is located at the top of the screening box (41), and the secondary screening plate (44) is located in the middle of the screening box (41). The secondary screening plate (44) is located directly below the primary screening plate (42), and the aperture of the primary screening plate (42) is larger than the aperture of the secondary screening plate (44).
3. The screening device for agricultural product processing as described in claim 1, characterized in that, The secondary sieve plate (44) is located in the middle of the screening box (41), dividing the interior of the screening box (41) into two parts.
4. The screening device for agricultural product processing as described in claim 1, characterized in that, The reciprocating motion mechanism (3) includes a working motor (31) fixedly connected to the device frame (2). The output end of the working motor (31) is connected to a first rotating disk (32). A transmission belt (33) is sleeved on the surface of the first rotating disk (32). A second rotating disk (34) and a third rotating disk (35) are sleeved on the surface of the transmission belt (33).
5. A screening device for agricultural product processing as described in claim 4, characterized in that, The inner side of the second rotating disk (34) is connected to a fan blade rod (341), which is rotatably mounted on the device frame (2). A fan blade plate (342) is mounted on the surface of the fan blade rod (341), which is installed in the fan cavity (343). An airflow outlet (344) is opened at the top of the fan cavity (343), and the fan cavity (343) is fixed on the device frame (2).
6. The screening device for agricultural product processing as described in claim 5, characterized in that, The inner side of the third rotating disk (35) is connected to a rotating rod (36), and the two ends of the rotating rod (36) are limited inside the bearing seat (361). The bearing seat (361) is fixedly connected to the device frame (2). The top of the rotating rod (36) is connected to a flip plate (37), and a moving rod (38) is rotatably connected to the surface of the flip plate (37). A receiving plate (39) is hinged to the top of the moving rod (38), and the receiving plate (39) is fixedly connected to the bottom of the screening box (41).
7. A screening device for agricultural product processing as described in claim 1, characterized in that, A swaying mechanism (5) is installed between the screening box (41) and the bracket on the device frame (2). The swaying mechanism (5) includes a fixed block (51), which is fixedly connected to the surface of the screening box (41). A lower bracket (52) is hinged to the fixed block (51) via a motion axis frame (53). The lower support (52) is fixedly connected to a connecting rod (54), and the upper support (55) is connected to the upper support (55) at the top end of the connecting rod (54). The upper support (55) is hinged to the fixed plate (57) through a deflection shaft frame (56), and the fixed plate (57) is fixedly connected to the support of the device frame (2).