Grain sifting testing machine

Abstract

The utility model discloses a grain sieving inspection machine belongs to grain processing technical field, including frame, be equipped with the sieving box that can reciprocatingly slide horizontally on the frame, be equipped with the drive mechanism of drive screen hole reciprocating motion on the frame, still be provided with the tester for carrying out the inspection to the grain in the sieving box on the frame, the screen hole is set up on the sieving box, the slide slot is set up on the sieving box bottom surface, and the sieve plate is slidably installed in the inside slide slot, be provided with the mesh that is one -to -one correspondence and intercommunication on the sieve plate, be equipped with the adjusting part on the sieving box and adjust the mesh intercommunication department size of sieve plate sliding in the slide slot to adjust screen hole, and this grain sieving inspection machine passes through the mesh intercommunication department size of sieve plate sliding adjustment screen hole, realizes the stepless regulation of sieving aperture, need not to replace screen cloth to be able to adapt to the grain product class of different granular size such as wheat, rice, corn etc.

Description

Technical Field

[0001] This utility model specifically relates to a grain screening and inspection machine, belonging to the field of grain processing technology. Background Technology

[0002] Grain inspection machines can typically perform multiple tasks, such as measuring the moisture content, particle size, color, and shape of grains, detecting impurities (such as foreign objects, mold, and pests), or determining the nutritional components and content of grains through chemical analysis. However, if grains accumulate during sieving, some grains may be blocked or densely packed, preventing sensors or detection equipment from fully contacting or accurately detecting all particles, thus affecting the accuracy and comprehensiveness of the detection.

[0003] An existing patent (publication number: CN222369583U) discloses a grain sieving and inspection machine, including a sieving storage frame; one side of the sieving storage frame is fixedly connected to the bottom of a U-shaped frame through a connecting frame, which can effectively vibrate and screen the grain inside the sieving frame, helping to redisperse the grain and thus distribute it more evenly in the detection area, which helps to ensure that the grain particles can be fully detected and evaluated.

[0004] However, the existing technology uses a fixed mesh design for the screens, while in actual grain processing scenarios, there are many different types of grains with significant differences in particle size and shape. The fixed mesh screens cannot meet the sieving requirements of different types of grains. When different types of grains need to be sieved for inspection, operators must manually replace the screens with the corresponding mesh sizes. This operation not only requires stopping the machine, but also involves multiple steps such as disassembling, aligning, and fixing the screens. The process is cumbersome, time-consuming, and labor-intensive, affecting the overall inspection efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a grain screening and inspection machine to address the shortcomings of existing technologies.

[0006] A grain sieving and inspection machine includes a frame, a sieving box that can slide horizontally back and forth on the frame, a drive mechanism for driving the sieve holes to reciprocate, and an inspection device for inspecting the grain inside the sieving box. The sieving box has sieve holes, and a sliding groove is formed on the bottom surface of the sieving box. A sieve plate is slidably installed inside the sliding groove. The sieve plate has mesh holes that correspond one-to-one with and communicate with the sieve holes. An adjustment component is provided on the sieving box to adjust the size of the communication between the sieve holes and the mesh holes by adjusting the sliding of the sieve plate inside the sliding groove.

[0007] Furthermore, the drive mechanism includes a drive motor mounted on the frame and a drive shaft rotatably mounted on the frame. The drive end of the drive motor is connected to a drive wheel, and the drive end of the drive shaft is connected to a driven wheel. A synchronous belt drives the drive wheel and the driven wheel. A crank is also connected to the end of the drive shaft. A connecting rod is hinged to the end of the crank away from the drive shaft, and the free end of the connecting rod is hinged to the sieve box.

[0008] Furthermore, the adjusting component includes an adjusting bolt rotatably mounted on the sieve box, an adjusting seat threadedly connected to the adjusting bolt, and the adjusting seat being fixedly connected to the sieve plate.

[0009] Furthermore, the side wall of the sieve plate is also connected to a connecting plate, the connecting plate is provided with a comparison hole of the same diameter as the mesh, the sieve box is provided with a through hole of the same diameter as the sieve hole, the through hole corresponds to the comparison hole, the side wall of the connecting plate is also connected to an indicator needle, and the sieve box is provided with a scale line that cooperates with the indicator needle.

[0010] Furthermore, pulleys are installed at the four corners of the bottom surface of the sieve box, and the frame is provided with roller tracks for the pulleys to move.

[0011] Furthermore, a guide plate is installed on the frame, the guide plate is located below the sieve box, and the guide plate is inclined.

[0012] Furthermore, a hinge seat is provided on the side of the sieve box near the drive shaft, and the end of the connecting rod away from the crank is connected to the sieve box through the hinge seat.

[0013] Furthermore, the inspector includes a gantry frame connected above the machine frame, with LED lights installed on the inner top wall of the gantry frame and photoelectric sensors installed on the inner side wall of the gantry frame.

[0014] Furthermore, it also includes an anti-loosening component installed on the sieve box for locking the rotation of the adjusting bolt. The anti-loosening component includes a ratchet fixed coaxially to the adjusting bolt. A slide rod is slidably installed on the sieve box. The top end of the slide rod is connected to a pawl that can engage with the ratchet. A return spring is also sleeved on the outer wall of the slide rod. The bottom end of the return spring is fixed to the sieve box, and the top end of the return spring is fixed to the slide rod.

[0015] Beneficial effects: 1. This utility model, through the threaded transmission cooperation between the sieve plate in the sliding groove on the bottom of the sieve box and the adjusting bolt and adjusting seat, can steplessly adjust the connection size of the sieve hole and the mesh hole. It can quickly adapt to different grain types with different particle sizes without stopping the machine to disassemble and replace the sieve. It solves the pain points of poor adaptability and cumbersome operation of traditional fixed mesh equipment, and improves the flexibility and work efficiency of sieving multiple types of grains.

[0016] 2. In this utility model, when the sieve plate is slidably adjusted, the indicator needle on its side wall connecting plate moves synchronously with the sieve plate, forming an online measurement cooperation with the scale line on the sieve box. The actual adjustment size of the sieve hole can be read in real time without the need for additional measuring tools, thus realizing the visualization and precise adjustment of the sieve hole size. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the left-side structure of this utility model; Figure 2 This is a schematic diagram of the right-side structure of this utility model; Figure 3 This is a front view structural diagram of the present utility model; Figure 4 This is a schematic diagram of the sieving component in this utility model; Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 for Figure 4 Enlarged view of the structure at point B.

[0018] In the diagram: 1. Frame; 2. Sieve box; 3. Inspector; 4. Guide plate; 5. Drive motor; 6. Drive wheel; 7. Drive shaft; 8. Driven wheel; 9. Synchronous belt; 10. Crank; 11. Connecting rod; 12. Pulley; 13. Sieve hole; 14. Sieve plate; 15. Adjusting bolt; 16. Adjusting seat; 17. Through hole; 18. Connecting plate; 19. Comparison hole; 20. Indicator needle; 21. Scale line; 22. Ratchet; 23. Slide rod; 24. Pad; 25. Return spring. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-6As shown, a grain sieving and inspection machine includes a frame 1, a sieving box 2 that can slide horizontally back and forth on the frame 1, a drive mechanism for driving the sieve holes 13 to reciprocate, and an inspection device 3 for inspecting the grain inside the sieving box 2. The sieving box 2 has sieve holes 13 and a sliding groove on its bottom surface. A sieve plate 14 is slidably installed inside the sliding groove. The sieve plate 14 has mesh holes that correspond one-to-one with and communicate with the sieve holes 13. The sieving box 2 has an adjusting component for adjusting the size of the communication between the sieve holes 13 and the mesh holes by adjusting the sliding of the sieve plate 14 inside the sliding groove. Specifically, the frame 1 provides basic installation support for the entire equipment. The sieve box 2 achieves horizontal reciprocating sliding through the matching structure on the frame 1, and the drive mechanism provides power for the reciprocating motion of the sieve box 2. The sieve holes 13 on the sieve box 2 correspond one-to-one with the mesh holes on the sieve plate 14 that is slidably installed in the bottom groove and are connected. The grain is sieved during the reciprocating motion of the sieve box 2, and impurities are leaked out through the connection between the sieve holes 13 and the mesh holes. The adjusting component can drive the sieve plate 14 to slide in the groove, change the overlap between the sieve holes 13 and the mesh holes, and thus adjust the actual sieve hole diameter. The inspector 3 is fixed on the frame 1 to perform index testing on the dispersed grain in the sieve box 2.

[0021] As a technical optimization of this utility model, the drive mechanism includes a drive motor 5 mounted on the frame 1 and a drive shaft 7 rotatably mounted on the frame 1. The drive end of the drive motor 5 is connected to a drive wheel 6, and the drive end of the drive shaft 7 is connected to a driven wheel 8. A synchronous belt 9 is connected between the drive wheel 6 and the driven wheel 8. The end of the drive shaft 7 is also connected to a crank 10. A connecting rod 11 is hinged to the end of the crank 10 away from the drive shaft 7. The free end of the connecting rod 11 is hinged to the sieve box 2.

[0022] Specifically, the drive motor 5 is started, and its drive end drives the drive wheel 6 to rotate. The drive wheel 6 transmits power to the driven wheel 8 through the synchronous belt 9, which in turn drives the drive shaft 7, which is fixed to the driven wheel 8, to rotate. The crank 10 at the end of the drive shaft 7 moves in a circular motion with the shaft. The circular motion is converted into horizontal linear reciprocating motion through the hinged connecting rod 11. The free end of the connecting rod 11 drives the screen box 2 to slide back and forth along the frame 1 through the hinge seat of the screen box 2.

[0023] As a technical optimization of this utility model, the adjusting component includes an adjusting bolt 15 rotatably mounted on the sieve box 2, and an adjusting seat 16 threadedly connected to the adjusting bolt 15, which is fixedly connected to the sieve plate 14.

[0024] Specifically, the adjusting bolt 15 is rotatably mounted on the sieve box 2, and the adjusting seat 16 is threadedly connected to the adjusting bolt 15 and fixed to the sieve plate 14. When the adjusting bolt 15 is rotated, the threaded transmission drives the adjusting seat 16 to move horizontally, thereby pulling the sieve plate 14 to slide in the groove of the sieve box 2, so as to realize the adjustment of the size of the sieve hole 13 and the mesh hole communication part.

[0025] As a technical optimization of this utility model, the side wall of the sieve plate 14 is also connected to a connecting plate 18. The connecting plate 18 is provided with a comparison hole 19 of the same diameter as the mesh. The sieve box 2 is provided with a through hole 17 of the same diameter as the sieve hole 13. The through hole 17 corresponds to the comparison hole 19. The side wall of the connecting plate 18 is also connected to an indicator needle 20. The sieve box 2 is provided with a scale line 21 that cooperates with the indicator needle 20.

[0026] Specifically, the connecting plate 18 is fixed to the sieve plate 14 and slides synchronously with the sieve plate 14; the comparison hole 19 on the connecting plate 18 corresponds to the through hole 17 on the sieve box 2 and the sieve hole 13 of equal diameter, so that the actual connection size between the sieve hole 13 and the mesh can be observed intuitively; the indicator needle 20 moves with the connecting plate 18 and cooperates with the scale line 21 on the sieve box 2 to accurately display the current aperture adjustment value.

[0027] As a technical optimization of this utility model, pulleys 12 are installed at the four corners of the bottom surface of the sieve box 2, and the frame 1 is provided with a track for the pulleys 12 to move.

[0028] Specifically, the pulleys 12 at the four corners of the bottom surface of the sieve box 2 are embedded in the raceways on the frame 1; when the sieve box 2 slides back and forth under the drive mechanism, the pulleys 12 roll in the raceways, reducing the friction between the sieve box 2 and the frame 1.

[0029] As a technical optimization of this utility model, a guide plate 4 is installed on the frame 1. The guide plate 4 is located below the sieve box 2 and is inclined.

[0030] Specifically, the guide plate 4 is installed on the frame 1 and located below the sieve box 2, and is set at an inclination. During the sieving process, the impurities that leak through the sieve holes 13 and mesh holes fall onto the guide plate 4 and slide along the inclined plate surface to the designated collection area.

[0031] As a technical optimization of this utility model, a hinge seat is provided on the side of the sieve box 2 near the drive shaft 7, and the end of the connecting rod 11 away from the crank 10 is connected to the sieve box 2 through the hinge seat.

[0032] Specifically, a hinge seat is provided on the side of the sieve box 2 near the drive shaft 7, and the end of the connecting rod 11 away from the crank 10 is hinged to the sieve box 2 through the hinge seat; when the connecting rod 11 reciprocates, the hinge seat can adapt to the angle change of the connecting rod 11 to ensure that the power is smoothly transmitted to the sieve box 2.

[0033] As a technical optimization of this utility model, the inspector 3 includes a gantry frame connected above the frame 1, an LED light installed on the inner top wall of the gantry frame, and a photoelectric sensor installed on the inner side wall of the gantry frame.

[0034] Specifically, the gantry frame of the inspector 3 is connected above the frame 1 and covers the detection area of ​​the sieve box 2; the LED lights on the inner top wall provide uniform illumination to eliminate the shadows of the grain particles; the photoelectric sensors on the inner side wall capture information such as the size, color, and shape of the grain particles to achieve online detection of indicators such as moisture content, mold, and pests.

[0035] As a technical optimization of this utility model, it also includes an anti-loosening component installed on the sieve box 2 for locking the rotation of the adjusting bolt 15. The anti-loosening component includes a ratchet 22 coaxially fixed on the adjusting bolt 15, a slide rod 23 slidably installed on the sieve box 2, a pawl 24 that can engage with the ratchet 22 connected to the top of the slide rod 23, and a return spring 25 sleeved on the outer wall of the slide rod 23. The bottom end of the return spring 25 is fixed to the sieve box 2, and the top end of the return spring 25 is fixed to the slide rod 23.

[0036] Specifically, when it is necessary to rotate the adjusting bolt 15, pull the slide bar 23 to disengage the pawl 24 at its top from the ratchet 22. At this time, the adjusting bolt 15 can be rotated to adjust the position of the screen plate 14. After the adjustment is completed, release the slide bar 23. Under the reset action of the return spring 25, the pawl 24 engages with the return spring 25 again, thereby locking the rotation of the adjusting bolt 15 and preventing the adjusting bolt 15 from rotating on its own during the screening process, thus improving the stability of the screen plate 14.

[0037] The overall working principle of this grain sieving and testing machine is as follows: The frame 1 serves as the mounting carrier for the entire equipment, providing stable support for components such as the sieve box 2, drive mechanism, and inspector 3. The guide plate 4 installed on the frame 1 is inclined and located below the sieve box 2. Its function is to receive impurities that leak through the sieve holes during the sieving process and guide the impurities to be discharged in a designated direction through the inclined structure, so as to avoid the accumulation of impurities inside the equipment and ensure the continuous and smooth sieving process.

[0038] The drive mechanism provides power for the horizontal reciprocating sliding of the sieve box 2. The specific transmission process is as follows: Start the drive motor 5, whose drive end drives the drive wheel 6 to rotate; The driving pulley 6 transmits power to the driven pulley 8 via the synchronous belt 9, thereby driving the drive shaft 7, which is fixedly connected to the driven pulley 8, to rotate synchronously. The crank 10 at the end of the drive shaft 7 moves in a circular motion with the drive shaft 7, and the circular motion is converted into horizontal linear reciprocating motion through the hinged connecting rod 11. The free end of the connecting rod 11 is connected to the sieve box 2 through the hinge seat on one side of the sieve box 2, which eventually drives the sieve box 2 to slide horizontally back and forth along the frame 1. The pulleys 12 at the four corners of the bottom of the sieve box 2 cooperate with the rollers on the frame 1 to reduce the friction when the sieve box 2 slides, ensuring smooth and efficient reciprocating motion, thereby allowing the grain in the sieve box 2 to be fully dispersed during the sliding process and avoiding accumulation.

[0039] The sieve holes 13 of the sieve box 2 cooperate with the mesh holes of the sieve plate 14 to adjust the mesh size as needed, solving the sieve adaptation problem for different types of grains. The specific adjustment and sieve process is as follows: The groove on the bottom of the sieve box 2 provides sliding installation space for the sieve plate 14. The mesh on the sieve plate 14 corresponds one-to-one with the sieve hole 13 of the sieve box 2 and remains connected in the initial state. When the grain slides back and forth in the sieve box 2, impurities that meet the mesh size leak out through the connected sieve hole 13 and the mesh and fall onto the guide plate 4 below. When it is necessary to adapt to grains of different particle sizes, the size of the sieve hole can be adjusted by adjusting the adjusting bolt 15: rotating the adjusting bolt 15, which is threaded into the adjusting seat 16, causes the sieve plate 14, which is fixedly connected to the adjusting seat 16, to slide horizontally in the chute. When the sieve plate 14 slides, the area of ​​the connecting part between its mesh and the sieve hole 13 of the sieve box 2 changes, thereby realizing stepless adjustment of the actual sieve hole size, ensuring that only impurities of the corresponding size are sieved out, and adapting to the target grain category. During the adjustment process, the connecting plate 18 on the side wall of the sieve plate 14 slides synchronously with the sieve plate 14: the comparison hole 19 on the connecting plate 18 corresponds to the through hole 17 on the sieve box 2, and at the same time, the indicator needle 20 on the connecting plate 18 moves along the scale line 21 of the sieve box 2. The operator can accurately control the sieve hole adjustment size through the cooperation of the indicator needle 20 and the scale line 21 to ensure the accuracy of impurity screening.

[0040] After the sieving box 2 drives the grain to slide horizontally back and forth, fully disperses it and completes the screening of impurities, the gantry frame-type inspection device 3 above the frame 1 performs online detection on the pure grain in the sieving box 2: the LED lights on the top wall of the gantry frame provide uniform illumination to ensure that the grain particles are not obstructed; the photoelectric sensors on the inner wall capture information such as the size, color and shape of the grain particles to detect indicators such as moisture content, mold, and pests. Because the grain has been dispersed by the back and forth sliding and impurities have been removed, the accuracy and comprehensiveness of the detection are significantly improved.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grain sieving and inspection machine, comprising a frame (1), characterized in that: The frame (1) is provided with a sieve box (2) that can slide horizontally back and forth. The frame (1) is provided with a drive mechanism that drives the sieve holes (13) to move back and forth. The frame (1) is also provided with an inspector (3) for inspecting the grain inside the sieve box (2). The sieve box (2) is provided with sieve holes (13). The bottom surface of the sieve box (2) is provided with a sliding groove. A sieve plate (14) is slidably installed inside the sliding groove. The sieve plate (14) is provided with mesh holes that correspond one-to-one with and communicate with the sieve holes (13). The sieve box (2) is provided with an adjusting component that adjusts the size of the sieve hole (13) and the mesh hole communication part by adjusting the sliding of the sieve plate (14) inside the sliding groove.

2. The grain sieving and inspection machine as described in claim 1, characterized in that: The drive mechanism includes a drive motor (5) mounted on the frame (1) and a drive shaft (7) rotatably mounted on the frame (1). The drive end of the drive motor (5) is connected to a drive wheel (6), and the drive end of the drive shaft (7) is connected to a driven wheel (8). A synchronous belt (9) is connected between the drive wheel (6) and the driven wheel (8). A crank (10) is also connected to the end of the drive shaft (7). A connecting rod (11) is hinged to the end of the crank (10) away from the drive shaft (7). The free end of the connecting rod (11) is hinged to the sieve box (2).

3. The grain sieving and inspection machine as described in claim 1, characterized in that: The adjusting component includes an adjusting bolt (15) rotatably mounted on the sieve box (2), and an adjusting seat (16) is threadedly connected to the adjusting bolt (15), and the adjusting seat (16) is fixedly connected to the sieve plate (14).

4. The grain sieving and inspection machine as described in claim 1, characterized in that: The side wall of the sieve plate (14) is also connected to a connecting plate (18). The connecting plate (18) has a comparison hole (19) with the same diameter as the mesh. The sieve box (2) has a through hole (17) with the same diameter as the sieve hole (13). The through hole (17) corresponds to the comparison hole (19). The side wall of the connecting plate (18) is also connected to an indicator needle (20). The sieve box (2) has a scale line (21) that cooperates with the indicator needle (20).

5. The grain sieving and inspection machine as described in claim 1, characterized in that: The four corners of the bottom surface of the sieve box (2) are equipped with pulleys (12), and the frame (1) is provided with a track for the pulleys (12) to move.

6. The grain sieving and inspection machine as described in claim 1, characterized in that: A guide plate (4) is installed on the frame (1). The guide plate (4) is located below the sieve box (2) and is inclined.

7. The grain sieving and inspection machine as described in claim 2, characterized in that: The sieve box (2) is provided with a hinge seat on the side near the drive shaft (7), and the end of the connecting rod (11) away from the crank (10) is connected to the sieve box (2) through the hinge seat.

8. The grain sieving and inspection machine as described in claim 1, characterized in that: The inspector (3) includes a gantry frame connected above the frame (1), an LED light installed on the inner top wall of the gantry frame, and a photoelectric sensor installed on the inner side wall of the gantry frame.

9. The grain sieving and inspection machine as described in claim 3, characterized in that: It also includes an anti-loosening component installed on the sieve box (2) for locking the rotation of the adjusting bolt (15). The anti-loosening component includes a ratchet (22) coaxially fixed on the adjusting bolt (15). A slide rod (23) is slidably installed on the sieve box (2). The top end of the slide rod (23) is connected to a pawl (24) that can engage with the ratchet (22). A return spring (25) is also sleeved on the outer wall of the slide rod (23). The bottom end of the return spring (25) is fixed to the sieve box (2), and the top end of the return spring (25) is fixed to the slide rod (23).

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