A kind of impurity and stone removing machine for grain processing
Patent Information
- Application Number
- CN202522209116.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-10-20
AI Technical Summary
本申请在现有技术下进行改进，现有技术中，目前，市面上的粮食除杂去石设备多采用筛分原理，通过筛板的振动或往复运动实现杂质与粮食的分离，然而，现有设备的筛板往往仅能实现单一方向的运动（如横向往复或上下振动），筛分轨迹简单，导致物料在筛面上的分散性不足，部分杂质难以充分暴露并分离，尤其对于颗粒大小接近的砂石与粮食，分离效率较低，同时，单一运动模式下，物料易在筛面局部堆积，不仅影响筛分速度，还可能因过度挤压造成粮食颗粒破损，降低加工品质
本实用新型中，使用时，将物料经进料斗加入至活动框内，物料落至第一筛板上进行筛分，筛分后物料经导流板导流落至第二筛板上进行再次筛分，启动电机，电机的输出轴转动带动凸轮转动，凸轮转动时顶动U型架使得U型架移动，U型架移动使得安装框和活动框移动，第二筛板对物料进行筛动，通过凸轮、伸缩杆和第二弹簧使得安装框做横向往复运动，安装框带动活动框移动过程中，活动框带动活动柱和转轮移动，转轮移动至与凸块接触时，凸块顶动转轮使得活动柱带动活动框移动，第一弹簧拉伸，当转轮与凸块不接触时第一弹簧复位带动活动框复位，进而实现第一筛板的震动，提高了筛分效率，提高了除杂去石效率。
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Figure CN224736719U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain processing technology, and more specifically, to a grain processing impurity and stone removal machine. Background Technology
[0002] In the grain processing industry, removing impurities and stones from raw grains is a crucial step in ensuring the quality of subsequent processing. Impurities such as soil, sand, weeds, and shriveled grains mixed in with raw grains not only affect the quality and taste of the finished grain product but can also cause wear and tear on equipment during processing, increasing energy consumption and maintenance costs. Therefore, efficient impurity and stone removal equipment is an indispensable and important component of grain processing production lines. This application improves upon existing technology. Currently, most grain impurity and stone removal equipment on the market adopts the principle of screening, which separates impurities from grains through the vibration or reciprocating motion of the screen plate. However, the screen plate of existing equipment can often only achieve single-direction movement (such as transverse reciprocating or up-down vibration), resulting in a simple screening trajectory. This leads to insufficient dispersion of materials on the screen surface, making it difficult for some impurities to be fully exposed and separated. Especially for sand and grain with similar particle sizes, the separation efficiency is low. At the same time, in the single-motion mode, materials are prone to local accumulation on the screen surface, which not only affects the screening speed but may also cause grain particle damage due to excessive compression, reducing the processing quality. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a grain processing impurity and stone removal machine.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a grain processing impurity removal and destone removal machine, comprising an impurity removal box, an installation frame slidably connected to the inner wall of the impurity removal box, a second screen plate fixedly connected to the bottom of the installation frame, a movable frame slidably connected to the top of the installation frame, a first screen plate fixedly connected to the inner wall of the movable frame, a guide plate fixedly connected to the inner wall of the movable frame below the first screen plate, symmetrically distributed U-shaped frames fixedly connected to both sides of the installation frame, and the U-shaped frames slidably connected to the impurity removal box, a cam provided on one side of the impurity removal box, and the cam abutting against the U-shaped frame, symmetrically distributed movable columns fixedly connected to both sides of the bottom of the movable frame, a rotating wheel rotatably connected to the bottom of the movable columns, symmetrically distributed fixing strips provided below the movable frame, and the fixing strips fixedly connected to the impurity removal box, and a plurality of equidistantly distributed protrusions provided on one side of the rotating wheel, the protrusions fixedly connected to the fixing strips, and the tops of the protrusions abutting against the installation frame.
[0005] As a preferred embodiment of this utility model, the top of the mounting frame is provided with a groove, the inner wall of the groove is slidably connected to the movable frame, both sides of the bottom of the mounting frame are provided with symmetrically distributed mounting slots, the mounting slots are connected to the groove, the movable column is located in the mounting slot, a discharge slot is provided on one side of the mounting frame and is connected to the inside of the mounting frame, the inner cross section of the discharge slot is conical.
[0006] As a preferred embodiment of this utility model, a fixing block is fixedly connected to the inner wall of the mounting groove, the outer wall of the movable column is slidably connected to the fixing block, a first spring is fixedly connected to the top of the fixing block, the other end of the first spring is fixedly connected to the movable frame, and the first spring is sleeved with the movable column.
[0007] As a preferred technical solution of this utility model, a telescopic rod is fixedly connected to the outer wall of the impurity removal box away from the cam, and a second spring is sleeved on the outside of the telescopic rod. One end of the second spring is fixedly connected to the impurity removal box, and the other end of the second spring is fixedly connected to the U-shaped frame.
[0008] As a preferred technical solution of this utility model, an installation plate is fixedly connected to the outer wall of the impurity removal box near the cam, a motor is fixedly connected to the top of the installation plate, and the output shaft of the motor is fixedly connected to the cam. Symmetrically distributed guide grooves are provided on both sides of the impurity removal box, and the inner wall of the guide groove is slidably connected to the U-shaped frame.
[0009] As a preferred technical solution of this utility model, a discharge plate is provided above the telescopic rod and slidably connected to the impurity removal box, and the discharge plate is fixedly connected to the movable frame. A discharge groove is provided on the side of the movable frame near the discharge plate, and the discharge groove is located above the discharge plate.
[0010] As a preferred technical solution of this utility model, a feeding hopper is fixedly connected to the top of the impurity removal box. The feeding hopper passes through the impurity removal box and extends into the movable frame. A discharge port is opened on one side of the impurity removal box, and the discharge port is located below the side of the impurity removal box near the telescopic rod.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this invention, during use, material is fed into the movable frame through the feed hopper. The material falls onto the first screen plate for screening. After screening, the material is guided by the guide plate to the second screen plate for further screening. The motor is started, and the output shaft of the motor rotates, driving the cam to rotate. When the cam rotates, it pushes the U-shaped frame, causing the U-shaped frame to move. The movement of the U-shaped frame causes the mounting frame and the movable frame to move. The second screen plate screens the material. Through the cam, the telescopic rod, and the second spring, the mounting frame makes a lateral reciprocating motion. During the movement of the mounting frame and the movable frame, the movable frame drives the movable column and the rotating wheel to move. When the rotating wheel moves to contact the protrusion, the protrusion pushes the rotating wheel, causing the movable column to drive the movable frame to move. The first spring is stretched. When the rotating wheel is no longer in contact with the protrusion, the first spring resets, causing the movable frame to reset, thereby realizing the vibration of the first screen plate, improving the screening efficiency and the efficiency of removing impurities and stones. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the installation of the movable frame of this utility model; Figure 3 This is a schematic diagram of the installation frame of this utility model; Figure 4 In this utility model Figure 2 Enlarged view of point A; Figure 5 In this utility model Figure 3 Enlarged view of point B.
[0013] In the diagram: 1. Impurity removal box; 2. Discharge port; 3. U-shaped frame; 4. Cam; 5. Motor; 6. Mounting plate; 7. Discharge plate; 8. Feed hopper; 9. Mounting frame; 10. Movable frame; 11. First screen plate; 12. Discharge trough; 13. First spring; 14. Guide plate; 15. Second screen plate; 16. Groove; 17. Guide groove; 18. Telescopic rod; 19. Second spring; 20. Mounting groove; 21. Fixing block; 22. Movable column; 23. Rotary wheel; 24. Fixing strip; 25. Protrusion; 26. Discharge trough. Detailed Implementation
[0014] 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.
[0015] like Figures 1 to 5As shown, this utility model provides a grain processing impurity removal and destoner, including an impurity removal box 1. An installation frame 9 is slidably connected to the inner wall of the impurity removal box 1. A second screen plate 15 is fixedly connected to the bottom of the installation frame 9. A movable frame 10 is slidably connected to the top of the installation frame 9. A first screen plate 11 is fixedly connected to the inner wall of the movable frame 10. A guide plate 14, fixedly connected to the inner wall of the movable frame 10, is provided below the first screen plate 11. The guide plate 14 has an angle of 15°-20° with the horizontal plane and is coated with polytetrafluoroethylene to reduce material adhesion. Symmetrically distributed U-shaped frames 3 are fixedly connected to both sides of the installation frame 9, and the U-shaped frames 3 are slidably connected to the impurity removal box 1. A cam 4 is provided on one side of the impurity removal box 1. The 4-axis abuts against the U-shaped frame 3. The bottom sides of the movable frame 10 are fixedly connected with symmetrically distributed movable columns 22. The bottom of the movable column 22 is rotatably connected to a rotating wheel 23. The bottom of the movable frame 10 is provided with symmetrically distributed fixing strips 24, and the fixing strips 24 are fixedly connected to the impurity removal box 1. The side of the rotating wheel 23 is provided with multiple equidistantly distributed protrusions 25, which are fixedly connected to the fixing strips 24. The top of the protrusions 25 abuts against the mounting frame 9. The cam 4 drives the U-shaped frame 3 to move, which in turn drives the mounting frame 9 to move, thereby moving the second screen plate 15. Through the cooperation of the rotating wheel 23 and the protrusions 25, the protrusions 25 push the movable frame 10, which in turn drives the first screen plate 11 to move, thus improving the impurity removal and screening efficiency.
[0016] The protrusion 25 has a height of 5-8mm and a semi-circular cross-section to reduce friction with the roller 23. The roller 23 and the protrusion 25 are in line contact. The roller is made of wear-resistant rubber to reduce noise.
[0017] The first sieve plate 11 has a sieve hole size of 2-4mm, suitable for wheat / rice. The second sieve plate 15 has a sieve hole size of 1-2mm, used to remove fine sand and gravel. Both are made of 304 stainless steel mesh (wear-resistant and corrosion-resistant).
[0018] The mounting frame 9 has a groove 16 at its top, and the inner wall of the groove 16 is slidably connected to the movable frame 10. The fit tolerance between the movable frame 10 and the groove 16 is H7 / g6, and the clearance fit ensures smooth sliding. The bottom two sides of the mounting frame 9 have symmetrically distributed mounting slots 20, which are connected to the groove 16. The movable column 22 is located in the mounting slot 20. A discharge chute 26 is provided on one side of the mounting frame 9 and is connected to the interior of the mounting frame 9. The inner cross-section of the discharge chute 26 is conical. The groove 16 guides the movement of the movable frame 10. In actual use, an electric door is installed on the mounting frame 9 to open or close the discharge chute 26. The electric door is electromagnetically controlled and is not shown in the figure.
[0019] The inner wall of the mounting groove 20 is fixedly connected to a fixing block 21, the outer wall of the movable column 22 is slidably connected to the fixing block 21, the top of the fixing block 21 is fixedly connected to a first spring 13, the other end of the first spring 13 is fixedly connected to the movable frame 10, and the first spring 13 is sleeved with the movable column 22. The first spring 13 facilitates the movable column 22 and the movable frame 10 to move and then reset.
[0020] Among them, a telescopic rod 18 is fixedly connected to the outer wall of the side of the impurity removal box 1 away from the cam 4. A second spring 19 is sleeved on the outside of the telescopic rod 18. One end of the second spring 19 is fixedly connected to the impurity removal box 1, and the other end of the second spring 19 is fixedly connected to the U-shaped frame 3. The second spring 19 facilitates the U-shaped frame 3 to move and then reset.
[0021] The elastic coefficient of the first spring 13 is 5-8 N / mm, and the elastic coefficient of the second spring 19 is 10-15 N / mm, ensuring that the vibration amplitude of the movable frame is less than the lateral movement amplitude of the mounting frame, thus avoiding structural interference.
[0022] Among them, the outer wall of the impurity removal box 1 near the cam 4 is fixedly connected to the mounting plate 6, the top of the mounting plate 6 is fixedly connected to the motor 5, and the output shaft of the motor 5 is fixedly connected to the cam 4. The model of the motor 5 is 80M2-4. The two sides of the impurity removal box 1 are provided with symmetrically distributed guide grooves 17, and the inner wall of the guide groove 17 is slidably connected to the U-shaped frame 3. The cam 4 is driven by the motor 5, thereby causing the cam 4 to drive the U-shaped frame 3 to move.
[0023] The telescopic rod 18 is provided with a discharge plate 7 that is slidably connected to the impurity removal box 1. The discharge plate 7 is fixedly connected to the movable frame 10. The movable frame 10 is provided with a discharge trough 12 on the side near the discharge plate 7. The discharge trough 12 is located above the discharge plate 7. The material on the first screen plate 11 is discharged through the discharge trough 12 and the discharge plate 7.
[0024] The top of the impurity removal box 1 is fixedly connected to the feed hopper 8, which passes through the impurity removal box 1 and extends into the movable frame 10. The discharge port 2 is opened on one side of the impurity removal box 1. The discharge port 2 is located below the side of the impurity removal box 1 near the telescopic rod 18. The feed hopper 8 is used to add materials into the movable frame 10.
[0025] Working principle and usage process of this utility model: In this application, during use, the material is fed into the movable frame 10 through the feed hopper 8. The material falls onto the first screen plate 11 for screening, first removing large impurities such as weeds and shriveled grains. These large impurities are discharged through the discharge chute 12 and the discharge plate 7. After screening, the material is guided by the guide plate 14 to the second screen plate 15 for further screening, removing small impurities such as sand and gravel. Qualified grains remain on the second screen plate 15. The motor 5 is started, and the output shaft of the motor 5 rotates, driving the cam 4 to rotate. When the cam 4 rotates, it pushes the U-shaped frame 3, causing the U-shaped frame 3 to move. The movement of the U-shaped frame 3 causes the mounting frame 9 and the movable frame 10 to move, and the second screen plate... The material is screened by cam 4, telescopic rod 18 and second spring 19, which causes the mounting frame 9 to reciprocate laterally. During the movement of the mounting frame 9 and the movable frame 10, the movable frame 10 drives the movable column 22 and the rotating wheel 23 to move. When the rotating wheel 23 moves to contact the protrusion 25, the protrusion 25 pushes the rotating wheel 23, which causes the movable column 22 to drive the movable frame 10 to move. The first spring 13 is stretched. When the rotating wheel 23 is no longer in contact with the protrusion 25, the first spring 13 resets and drives the movable frame 10 to reset, thereby realizing the vibration of the first screen plate 11, improving the screening efficiency and the efficiency of removing impurities and stones. In this application, the lateral reciprocating frequency of the mounting frame 9 is 10-15 times / second, and the vertical vibration frequency of the movable frame 10 is 20-30 times / second. The frequencies of the two are in a multiple relationship by adjusting the spacing of the protrusions 25 and the speed of the motor 5 to avoid resonance. The inner wall of the groove 16 is pasted with a polytetrafluoroethylene wear-resistant layer to reduce the friction coefficient between the movable frame 10 and the mounting frame 9.
[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A kind of impurity and stone removing machine for grain processing, including impurity removal box (1), it is characterized by: The inner wall of the impurity removal box (1) is slidably connected to an installation frame (9). The bottom of the installation frame (9) is fixedly connected to a second sieve plate (15). The top of the installation frame (9) is slidably connected to a movable frame (10). The inner wall of the movable frame (10) is fixedly connected to a first sieve plate (11). Below the first sieve plate (11) is a guide plate (14) fixedly connected to the inner wall of the movable frame (10). The two sides of the installation frame (9) are fixedly connected to symmetrically distributed U-shaped frames (3), and the U-shaped frames (3) are slidably connected to the impurity removal box (1). One side of the impurity removal box (1) is provided with There is a cam (4), and the cam (4) abuts against the U-shaped frame (3). The bottom sides of the movable frame (10) are fixedly connected with symmetrically distributed movable columns (22). The bottom of the movable column (22) is rotatably connected with a rotating wheel (23). The bottom of the movable frame (10) is provided with symmetrically distributed fixing strips (24), and the fixing strips (24) are fixedly connected to the impurity removal box (1). The rotating wheel (23) has multiple equidistantly distributed protrusions (25) on one side. The protrusions (25) are fixedly connected to the fixing strips (24), and the top of the protrusions (25) abuts against the mounting frame (9).
2. The grain processing impurity removal and destone removal machine according to claim 1, characterized in that: The top of the mounting frame (9) is provided with a groove (16), the inner wall of the groove (16) is slidably connected to the movable frame (10), and the bottom sides of the mounting frame (9) are provided with symmetrically distributed mounting slots (20), the mounting slots (20) are connected to the grooves (16), the movable column (22) is located in the mounting slots (20), and a discharge slot (26) is provided on one side of the mounting frame (9), and the discharge slot (26) is connected to the inside of the mounting frame (9), the inner cross section of the discharge slot (26) is conical.
3. The grain processing impurity removal and destone removal machine according to claim 2, characterized in that: The inner wall of the mounting groove (20) is fixedly connected to a fixing block (21), the outer wall of the movable column (22) is slidably connected to the fixing block (21), the top of the fixing block (21) is fixedly connected to a first spring (13), the other end of the first spring (13) is fixedly connected to the movable frame (10), and the first spring (13) is sleeved with the movable column (22).
4. The grain processing impurity removal and destone removal machine according to claim 1, characterized in that: A telescopic rod (18) is fixedly connected to the outer wall of the side of the cleaning box (1) away from the cam (4). A second spring (19) is sleeved on the outside of the telescopic rod (18). One end of the second spring (19) is fixedly connected to the cleaning box (1), and the other end of the second spring (19) is fixedly connected to the U-shaped frame (3).
5. A grain processing impurity removal and destoner according to claim 1, characterized in that: The cleaning box (1) has a mounting plate (6) fixedly connected to the outer wall of the side near the cam (4). The top of the mounting plate (6) is fixedly connected to a motor (5), and the output shaft of the motor (5) is fixedly connected to the cam (4). The cleaning box (1) has symmetrically distributed guide grooves (17) on both sides, and the inner wall of the guide groove (17) is slidably connected to the U-shaped frame (3).
6. The grain processing impurity removal and destone removal machine according to claim 4, characterized in that: Above the telescopic rod (18) is a discharge plate (7) that is slidably connected to the impurity removal box (1), and the discharge plate (7) is fixedly connected to the movable frame (10). The movable frame (10) has a discharge groove (12) on the side near the discharge plate (7), and the discharge groove (12) is located above the discharge plate (7).
7. A grain processing impurity removal and destone removal machine according to claim 1, characterized in that: The top of the impurity removal box (1) is fixedly connected to a feed hopper (8), which passes through the impurity removal box (1) and extends into the movable frame (10). A discharge port (2) is provided on one side of the impurity removal box (1), and the discharge port (2) is located below the side of the impurity removal box (1) near the telescopic rod (18).