Granule counting machine

Abstract

The utility model discloses a grain counting machine which comprises a machine frame, a roller conveying line provided with at least two conveying rails is arranged on the machine frame, a material vibrating plate is arranged at the feeding end of the roller conveying line, and a counting assembly used for counting conveyed products is arranged on the conveying rails of the roller conveying line. The rack is further provided with a discharging device, an inlet of the discharging device is located at an outlet of the discharging end of the roller conveying line, and the discharging device is used for receiving counted products from the roller conveying line. Products located at the position of the vibration plate can be rapidly conveyed through the two roller conveying lines, the products are counted through the counting assembly in the conveying process, specific calculation of the conveyed products is achieved, a certain number of products are conveyed to the discharging device to be conveyed to the next working procedure, and the production efficiency is improved. Compared with existing manual and single-channel counting, the product conveying and counting device can quickly convey and count products.

Description

Technical Field

[0001] This utility model relates to the field of food processing and packaging technology, and in particular to a grain counting machine. Background Technology

[0002] In the food processing and packaging industry, counting is an essential step, especially when packaging fruits, vegetables, and other items. Quick and accurate counting is crucial for dispensing items to specified quantities. Traditional counting methods rely primarily on manual labor, which is inefficient and prone to errors, failing to meet the demands of large-scale, high-precision production.

[0003] In existing technologies, some counting machines are widely used in the food processing and packaging industries. Although these counting machines can achieve a certain degree of automated counting, some problems still exist. For example, traditional counting machines have difficulty accurately counting items such as fruits and soft fruits of different sizes; at the same time, existing counting machines can usually only operate in a single channel and cannot achieve simultaneous counting in two channels, which limits the counting efficiency. To address these issues, we provide a grain counting machine. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a counting machine.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A counting machine includes a frame on which a roller conveyor with at least two conveying tracks is mounted. A vibrating plate is provided at the feed end of the roller conveyor. Counting components for counting the conveyed products are provided on the conveying tracks of the roller conveyor. A feeding device is also installed on the frame. The inlet of the feeding device is located at the feed end outlet of the roller conveyor. The feeding device is used to receive the counted products from the roller conveyor.

[0007] Preferably, the roller conveyor line includes at least two conveyor frames mounted on the frame, each conveyor frame having sprockets mounted at both ends, two chains mounted between the two sprockets of the conveyor frame, each chain having multiple pins evenly mounted on it, and rollers mounted between two chains at the same position via the pins. A first conveyor drive motor for driving the chains is fixedly mounted on the outer side of the conveyor frame.

[0008] Preferably, a knurling wheel is fixedly installed at the end of each roller, and a wear-resistant strip is fixedly installed on the conveyor frame below the knurling wheel.

[0009] Preferably, the wear-resistant strip includes a fixing member, one side of which is provided with an abutment portion located below the knurling wheel and in contact with the knurling wheel, and the upper surface of the fixing member is provided with a guide protrusion.

[0010] Preferably, the counting component includes a fixed frame that is fixedly installed on the roller conveyor line, and a photoelectric sensor located above the conveyor track on the roller conveyor line is fixedly installed on the fixed frame.

[0011] Preferably, a separation assembly is provided above the roller conveyor line. The separation assembly includes a gantry frame, a lifting frame is slidably mounted between the inner sidewalls of the gantry frame, a first rotating shaft is rotatably mounted between the inner sidewalls of the lifting frame, a brush is mounted on the first rotating shaft, a lead screw is rotatably mounted on the gantry frame to drive the lifting frame to rise and fall, a clearance groove is provided on one side of the gantry frame, a rotary drive motor is provided at the power input end of the first rotating shaft to drive its rotation, the output shaft of the rotary drive motor passes through the clearance groove to drive the first rotating shaft to rotate, and a handwheel is mounted on the screw's screw-turning end.

[0012] Preferably, the feeding device is a hopper feeding assembly, which includes a feeding frame fixedly installed on the frame, a direct drive module fixedly installed on the feeding frame, an upper collecting hopper installed on the moving end of the direct drive module, a lower collecting hopper installed on the feeding frame below the opening of the upper collecting hopper, a first gate installed at the outlet of the upper collecting hopper, a first cylinder installed at the power input end of the first gate, the first cylinder driving the first cylinder to open or close the outlet of the upper collecting hopper, and a second gate installed at the outlet of the lower collecting hopper, a second cylinder installed at the power input end of the second gate, the second cylinder driving the second gate to open or close the outlet of the lower collecting hopper.

[0013] Preferably, the feeding device is a left and right conveying assembly, which includes a mounting frame fixedly installed on the frame. A corrugated conveyor belt for conveying is installed on the mounting frame, and inclined downward feeding guide troughs are fixedly installed at both ends of the corrugated conveyor belt.

[0014] Preferably, each of the feeding guide channels is equipped with a blocking assembly for opening or closing the outlet of the feeding guide channel. The blocking assembly includes a second rotating shaft that is laterally rotatably mounted on the inner wall of the feeding guide channel. Multiple stop levers are laterally arranged and fixedly mounted on the outer surface of the second rotating shaft. A transmission block is fixedly mounted on the power input end of the second rotating shaft. A third cylinder is mounted on the outer side of the feeding guide channel, which drives the second rotating shaft to rotate through the transmission block.

[0015] Preferably, a roller brush assembly is installed at the inlet of the feeding guide trough.

[0016] This utility model has the following advantages:

[0017] 1. This utility model can quickly transport products located at the vibrating plate position through two roller conveyor lines, and count the products during the transport process to realize the specific calculation of the transported products, so that a certain number of products are transported to the unloading device and then transported to the next process. Compared with the existing manual and single-channel counting, this application can quickly transport and count products.

[0018] 2. This utility model, by installing multiple rollers on a chain, allows the product to be transported between two adjacent rollers as the chain rotates. As the rollers rotate and move with the chain, the rollers themselves also rotate due to the contact between the knurled wheel and the wear-resistant strip, thus causing the product located between the two rollers to rotate as well. This makes it easy to observe whether the fruit has any defects.

[0019] 3. This utility model uses two methods as a feeding device: a hopper feeding component and a left and right conveying component, so as to feed materials according to different feeding scenarios and make feeding more flexible. Attached Figure Description

[0020] Figure 1 This is a first-view overall schematic diagram of Embodiment 1 of the present utility model.

[0021] Figure 2 This is a second-view overall schematic diagram of Embodiment 1 of this utility model.

[0022] Figure 3 This is a schematic diagram of the overall roller conveyor line of this utility model.

[0023] Figure 4 This is a schematic diagram of the exploded state of the roller conveyor line of this utility model.

[0024] Figure 5 This is a schematic diagram of the assembly state of the roller conveyor line, counting component and vibrating plate of this utility model.

[0025] Figure 6 For the present utility model Figure 4 Enlarged diagram of point A in the middle.

[0026] Figure 7 This is a cross-sectional schematic diagram of the roller conveyor line of this utility model.

[0027] Figure 8 For the present utility model Figure 7 Enlarged diagram of point B in the middle.

[0028] Figure 9 This is a schematic diagram of the wear-resistant strip structure of this utility model.

[0029] Figure 10 This is a schematic diagram of the structure of the separation component of this utility model.

[0030] Figure 11 This is a schematic diagram of the hopper feeding assembly of this utility model.

[0031] Figure 12 This is a first-view overall schematic diagram of Embodiment 2 of this utility model.

[0032] Figure 13 This is a schematic diagram of the overall structure from a second perspective of Embodiment 2 of this utility model.

[0033] Figure 14 This is a schematic diagram of the left and right conveying components of this utility model.

[0034] In the diagram, 1. Frame; 2. Roller conveyor line; 21. Conveyor frame; 22. Chain; 23. Roller; 24. First conveyor drive motor; 25. Knurled wheel; 26. Wear-resistant strip; 261. Fixing component; 262. Abutment part; 263. Guide protrusion; 27. Pin; 3. Vibrating plate; 4. Hopper unloading assembly; 41. Unloading frame; 42. Direct drive module; 43. Upper hopper; 44. First gate; 45. First cylinder; 46. Lower hopper; 47. Second cylinder; 48. Second gate; 5. 51. Counting component; 52. Fixing frame; 6. Photoelectric sensor; 7. Separation component; 61. Gantry frame; 62. Lead screw; 63. Lifting frame; 64. First rotating shaft; 65. Brush; 66. Rotary drive motor; 67. Clearance groove; 68. Handwheel; 7. Left and right conveying components; 71. Mounting frame; 72. Corrugated conveyor belt; 73. Discharge guide trough; 74. Blocking component; 741. Second rotating shaft; 742. Stop bar; 743. Third cylinder; 744. Transmission block; 75. Roller brush assembly. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this application, the counting machine is mainly for counting spherical products, specifically spherical fruits or spherical vegetables, etc., and there is no limitation on the specific types of fruits and vegetables.

[0038] like Figures 1 to 7 Example 1 shown:

[0039] A counting machine includes a frame 1, on which a roller conveyor 2 with at least two conveying tracks is provided. A vibrating plate 3 is provided at the feed end of the roller conveyor 2. A counting component 5 for counting the conveyed products is provided on the conveying tracks of the roller conveyor 2. A feeding device is also installed on the frame 1. The inlet of the feeding device is located at the feeding end outlet of the roller conveyor 2. The feeding device is used to receive the counted products from the roller conveyor 2.

[0040] See Figure 1 and Figure 2 As shown, initially, the products are piled up in the space formed by the vibrating plate 3. Therefore, during the conveying process of the roller conveyor 2, the products located at the vibrating plate 3 will enter the roller conveyor 2 and move along with the roller conveyor 2. During the product movement, the counting component 5 detects each moving product to determine the quantity of the product. The inspected products will continue to move along the roller conveyor 2. Finally, the products are conveyed to the unloading device to enter the next process, thus completing the counting of the product quantity. The entire process does not require manual intervention and is automatically completed. Compared with manual counting, the counting efficiency is greatly improved. Moreover, compared with single-channel counting, this application uses at least two additional conveying tracks, thereby improving both technical efficiency and product conveying efficiency.

[0041] The roller conveyor line 2 includes at least two conveyor frames 21 mounted on the frame 1. Each conveyor frame 21 has sprockets at both ends. Two chains 22 are installed between the two sprockets of the conveyor frame 21. Multiple pins 27 are evenly installed on each chain 22. A roller 23 is installed between the two chains 22 at the same position through the pins 27. A first conveyor drive motor 24 for driving the chain 22 is fixedly installed on the outer side of the conveyor frame 21.

[0042] Each roller 23 has a knurled wheel 25 fixedly installed at its end, and a wear-resistant strip 26 is fixedly installed on the conveyor frame 21 below the knurled wheel 25.

[0043] See Figure 6 , Figure 7 as well as Figure 8 As shown, sprockets are installed at both ends of the conveyor frame 21. One of the sprockets can be connected to the first conveyor drive motor 24 for transmission. Two chains are installed between the two sprockets of the same conveyor frame 21. The two chains 22 are connected to the sprockets, that is, there are two parallel and spaced chains 22 on the conveyor frame 21. The adjacent two links of each chain 22 are connected by hollow pins. That is, the hollow pin has a central hole, and a pin 27 is provided in the hollow. The pin 27 passes through the central hole of the hollow pin and extends to the other side of the chain 22 (e.g., ...). Figure 8 (As shown) is connected to roller 23.

[0044] Furthermore, in order to have sufficient torque to drive the sprocket and chain 22 to rotate, a reducer can be provided on the output shaft of the first conveying drive motor 24, and the output shaft of the reducer is connected to one of the sprockets.

[0045] Please continue reading. Figure 7 and Figure 8 As shown, the roller 23 can be assembled from a cylinder and a rotating shaft. The cylinder can rotate relative to the rotating shaft. The rotating shaft is fixedly connected to the pin 27, that is, the rotating shaft can move with the rotation of the chain 22, thereby driving the cylinder to move as well. It can be understood that the knurling wheel 25 is fixedly installed at both ends of the cylinder.

[0046] See Figures 3 to 5 As shown, since multiple rollers 23 are evenly installed on the chain 22, a certain size of accommodating space is formed between two adjacent rollers 23. This accommodating space is adapted to the size of the product. The distance between two adjacent rollers 23 can be designed and adjusted according to the size of the product. Here, no specific limit is made on the specific distance.

[0047] The first conveyor drive motor 24 starts and drives the chain 22 to rotate. As the chain 22 rotates, it also drives the roller 23 to move. Since the knurled wheel 25 set at one or both ends of the roller 23 is in contact with the wear-resistant strip 26 (the wear-resistant strip 26 is fixed in position), the knurled wheel 25 and the roller 23 will rotate as the roller 23 moves with the chain. That is, the knurled wheel 25 and the roller 23 can rotate on their own. Since each roller 23 rotates on its own, the product in the space between two rollers 23 will also rotate when it is in contact with the roller 23. Thus, it is possible to observe whether there are defects in the product. These defects can be observed manually or by other means. No specific restrictions are made here.

[0048] As the roller 23 moves along the chain 22, when the roller 23 moves to the position of the vibrating plate 3, it will collide with the vibrating plate 3 and deform, thereby generating vibration. The generated vibration can evenly distribute the products in the space enclosed by the vibrating plate 3. Specifically, in order for the products to enter the accommodating space between two adjacent rollers 23, the space enclosed by the vibrating plate 3 is wider at the top and narrower at the bottom, and the feed position of the roller conveyor line 2 is located at the narrower part, so that the products can enter the accommodating space formed by the two adjacent rollers 23.

[0049] The wear-resistant strip 26 includes a fastener 261. One side of the fastener 261 is provided with an abutment portion 262, which is located below the knurling wheel 25 and contacts the knurling wheel 25. The upper surface of the fastener 261 is provided with a guide protrusion 263.

[0050] See Figure 8 and Figure 9 As shown, the wear-resistant strip 26 consists of three parts: a fixing part 261, an abutting part 262, and a guide protrusion 263. Specifically, the fixing part 261 is mainly used to connect and install with the conveyor frame 21, while the abutting part 262 abuts against the knurled wheel 25 to provide friction for the rotation of the knurled wheel 25. Furthermore, the guide protrusion 263 mainly cooperates with the chain 22 to guide the rotation of the chain 22 and prevent the chain 22 from shifting position and separating from the sprocket during rotation. It can be understood that the fixing part 261, the abutting part 262, and the guide protrusion 263 can be integrally formed.

[0051] The counting component 5 includes a fixed frame 51 fixedly installed on the roller conveyor line 2, and a photoelectric sensor 52 located above the conveying track on the roller conveyor line 2 is fixedly installed on the fixed frame 51.

[0052] See Figures 1 to 5 as well as Figure 7As shown, there are two counting components 5, which are located above the two conveying tracks respectively. Specifically, the mounting bracket 51 is used to install the photoelectric sensor 52. The photoelectric sensor 52 detects the products located between the two rollers 23 to detect their presence, thereby realizing the quantity statistics. In addition to using the photoelectric sensor 52 to realize the quantity statistics, other sensors that can realize the quantity statistics can also be used instead. Here, there is no restriction on the specific type.

[0053] A separation assembly 6 is provided above the roller conveyor line 2. The separation assembly 6 includes a gantry frame 61. A lifting frame 63 is slidably mounted between the inner walls of the gantry frame 61. A first rotating shaft 64 is rotatably mounted between the inner walls of the lifting frame 63. A brush 65 is mounted on the first rotating shaft 64. A lead screw 62 that drives the lifting frame 63 to rise and fall is rotatably mounted on the gantry frame 61. A clearance groove 67 is provided on one side of the gantry frame 61. A rotary drive motor 66 is provided at the power input end of the first rotating shaft 64 to drive it to rotate. The output shaft of the rotary drive motor 66 passes through the clearance groove 67 to drive the first rotating shaft 64 to rotate. A handwheel 68 is installed at the screw end of the lead screw 62.

[0054] See Figure 1 , Figure 2 and Figure 10 As shown, in order to prevent two products from being contained in one container, the other product in the container is detached by the brush 65. Specifically, the first rotating shaft 64 is rotated by the rotary drive motor 66, which in turn drives the brush 65 to rotate, separating the other product in the container and causing it to fall back to the position of the vibrating plate 3 to be conveyed next time.

[0055] The lifting frame 63 can be raised and lowered via the slide rail slider assembly. To meet the needs of different heights, the handwheel 68 can be manually rotated to drive the lead screw 62 to rotate. As the lead screw 62 rotates, it drives the lifting frame 63 to rise and fall, thereby positioning the brush 65 at different heights to meet the height requirements. In order for the rotary drive motor 66 to rise and fall together, the rotary drive motor 66 can be mounted on one side of the lifting frame 63 via a mounting plate and rise and fall together with the lifting frame 63. The specific installation method is not limited here, and the appropriate installation method can be selected as needed.

[0056] The feeding device is a hopper feeding assembly 4, which includes a feeding frame 41 fixedly installed on the frame 1. A direct drive module 42 is fixedly installed on the feeding frame 41. An upper collecting hopper 43 is installed on the moving end of the direct drive module 42. A lower collecting hopper 46 is installed on the feeding frame 41 below the opening of the upper collecting hopper 43. A first gate 44 is installed at the outlet of the upper collecting hopper 43. A first cylinder 45 is installed at the power input end of the first gate 44. The first cylinder 45 drives the first cylinder 45 to open or close the outlet of the upper collecting hopper 43. A second gate 48 is installed at the outlet of the lower collecting hopper 46. A second cylinder 47 is installed at the power input end of the second gate 48. The second cylinder 47 drives the second gate 48 to open or close the outlet of the lower collecting hopper 46.

[0057] See Figure 11 As shown, the direct drive module 42 moves the upper hopper 43 to the outlet position of the roller conveyor line 2. Products counted from the roller conveyor line 2 enter the upper hopper 43. Once a predetermined number of products have been conveyed into the upper hopper 43, the roller conveyor line 2 can be stopped. The direct drive module 42 lowers the upper hopper 43 to the lower hopper 46 position. Then, the first cylinder 45 drives the first gate 44 to open the outlet of the upper hopper 43. After the outlet is opened, the products inside will enter the lower hopper 46. Next, the direct drive module 42 drives the upper hopper 43 to move to the initial position, that is, to move the upper hopper 43 to the outlet position of the roller conveyor line 2 to receive the next batch of counted products. At this time, the first cylinder 45 drives the first gate 44 to close the outlet of the upper hopper 43. The products in the lower hopper 46 can be conveyed to the next process by the second cylinder 47 driving the second gate 48 to open the outlet.

[0058] The working process of this embodiment is as follows: First, the product located at the position of the vibrating plate 3 is conveyed by the roller conveyor line 2. During the conveying process, the product is counted by the counting component 5. After the counting is completed, the product continues to be conveyed to the upper collection hopper 43 by the roller conveyor line 2. When a predetermined number of products are conveyed to the upper collection hopper 43, the roller conveyor line 2 stops conveying. Then, the direct drive module 42 drives the upper collection hopper 43 to the receiving position of the lower collection hopper 46 and conveys the product to the lower collection hopper 46. Then, the direct drive module 42 drives the upper collection hopper 43 to return to the initial position. The second cylinder 47 opens the second gate 48 as needed to convey the product in the lower collection hopper 46 to the next process.

[0059] like Figures 12 to 14 Example 2 shown:

[0060] The difference between this embodiment and the above embodiment is that the feeding device is a left and right conveying assembly 7. The left and right conveying assembly 7 includes a mounting frame 71 fixedly installed on the frame 1. A corrugated conveyor belt 72 for conveying is installed on the mounting frame 71. Inclined downward feeding guide troughs 73 are fixedly installed at both ends of the corrugated conveyor belt 72.

[0061] See Figure 13 As shown, products from roller conveyor line 2 are conveyed onto corrugated conveyor belt 72, which conveys the products on it to the left or right and guides them to the next process through unloading guide trough 73.

[0062] Each feeding guide trough 73 is equipped with a blocking assembly 74 for opening or closing the outlet of the feeding guide trough 73. The blocking assembly 74 includes a second rotating shaft 741 that is laterally rotatably mounted on the inner wall of the feeding guide trough 73. Multiple levers 742 are laterally arranged and fixedly mounted on the outer surface of the second rotating shaft 741. A transmission block 744 is fixedly mounted on the power input end of the second rotating shaft 741. A third cylinder 743 is mounted on the outer side of the feeding guide trough 73, which drives the second rotating shaft 741 to rotate through the transmission block 744.

[0063] See Figure 14 As shown, during the conveying process of the feeding guide trough 73, in order to prevent the components of the next process from not reaching the predetermined position, the products can be blocked and buffered in the feeding guide trough 73 by the blocking component 74. Specifically, in the initial state, the stop lever 742 blocks the outlet of the feeding guide trough 73. When feeding is required, the third cylinder 743 is activated, which drives the second rotating shaft 741 to rotate through the transmission block 744, and in turn drives the stop lever 742 to rotate to release the blockage on the outlet of the feeding guide trough 73. The products in the feeding guide trough 73 will flow to the next process. In practice, the outlet of the feeding guide trough 73 can be opened or closed as needed by the blocking components 74 on the left or right side.

[0064] A roller brush assembly 75 is installed at the inlet of the feeding guide trough 73. In this embodiment, the roller brush assembly 75 has the same structure as the separation assembly 6 in embodiment 1. The width of the brush 65 in the roller brush assembly 75 is adaptively adjusted according to the width of the feeding guide trough 73. The specific width is not limited here.

[0065] The working process of this embodiment is as follows: First, the products at the position of the vibrating plate 3 are conveyed by the roller conveyor line 2. During the conveying process, the quantity is counted by the counting component 5. The counted products are conveyed to the corrugated conveyor belt 72. When a predetermined number of products are conveyed to the corrugated conveyor belt 72, the roller conveyor line 2 can stop conveying. Then, the corrugated conveyor belt 72 can convey the products to the left or right and convey them to the unloading guide trough 73. At this time, the roller conveyor line 2 can continue to convey the counted products to the corrugated conveyor belt 72. Then, the blocking component 74 opens the outlet of the unloading guide trough 73 as needed, so that the products in the unloading guide trough 73 flow to the next process. Next, the blocking component 74 closes the outlet of the unloading guide trough 73.

[0066] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grain counting machine, comprising a frame (1), characterized in that, The frame (1) is provided with a roller conveyor line (2) having at least two conveying tracks. The feed end of the roller conveyor line (2) is provided with a vibrating plate (3). The conveying track of the roller conveyor line (2) is provided with a counting component (5) for counting the conveyed products. The frame (1) is also equipped with a feeding device. The inlet of the feeding device is located at the feeding end outlet of the roller conveyor line (2). The feeding device is used to receive the counted products from the roller conveyor line (2).

2. A grain counting machine according to claim 1, characterized in that: The roller conveyor line (2) includes at least two conveyor frames (21) mounted on the frame (1). Each conveyor frame (21) has sprockets mounted at both ends. Two chains (22) are mounted between the two sprockets of the conveyor frame (21). Multiple pins (27) are evenly mounted on each chain (22). A roller (23) is mounted between two chains (22) at the same position through the pins (27). A first conveyor drive motor (24) for driving the chains (22) is fixedly mounted on the outer side of the conveyor frame (21).

3. A grain counting machine according to claim 2, characterized in that: Each roller (23) is fixedly mounted with a knurling wheel (25) at its end, and a wear-resistant strip (26) is fixedly mounted on the conveyor frame (21) below the knurling wheel (25).

4. A grain counting machine according to claim 3, characterized in that: The wear-resistant strip (26) includes a fastener (261), and a contact portion (262) is provided on one side of the fastener (261). The contact portion (262) is located below the knurling wheel (25) and contacts the knurling wheel (25). A guide protrusion (263) is provided on the upper surface of the fastener (261).

5. A grain counting machine according to claim 1, characterized in that: The counting component (5) includes a fixed frame (51) fixedly installed on the roller conveyor line (2), and a photoelectric sensor (52) is fixedly installed on the fixed frame (51) above the conveying track on the roller conveyor line (2).

6. A grain counting machine according to claim 1, characterized in that: A separation assembly (6) is provided above the roller conveyor line (2). The separation assembly (6) includes a gantry frame (61). A lifting frame (63) is slidably installed between the inner walls of the gantry frame (61). A first rotating shaft (64) is rotatably installed between the inner walls of the lifting frame (63). A brush (65) is installed on the first rotating shaft (64). A screw (62) that drives the lifting frame (63) to rise and fall is rotatably installed on the gantry frame (61). A clearance groove (67) is provided on one side of the gantry frame (61). A rotary drive motor (66) that drives the first rotating shaft (64) to rotate is provided at the power input end of the first rotating shaft (64). The output shaft of the rotary drive motor (66) passes through the clearance groove (67) and drives the first rotating shaft (64) to rotate. A handwheel (68) is installed at the screw (62).

7. A grain counting machine according to claim 1, characterized in that: The feeding device is a hopper feeding assembly (4), which includes a feeding frame (41) fixedly installed on the frame (1). A direct drive module (42) is fixedly installed on the feeding frame (41). An upper collecting hopper (43) is installed on the moving end of the direct drive module (42). A lower collecting hopper (46) is installed on the feeding frame (41) below the opening of the upper collecting hopper (43). A first gate (44) is installed at the outlet of the upper collecting hopper (43). A first cylinder (45) is installed at the power input end of the first gate (44). The first cylinder (45) drives the first cylinder (45) to open or close the outlet of the upper collection hopper (43). A second gate (48) is installed at the outlet of the lower collection hopper (46). A second cylinder (47) is installed at the power input end of the second gate (48). The second cylinder (47) drives the second gate (48) to open or close the outlet of the lower collection hopper (46).

8. A grain counting machine according to claim 1, characterized in that: The feeding device is a left and right conveying assembly (7). The left and right conveying assembly (7) includes a mounting frame (71) fixedly installed on the frame (1). A corrugated conveyor belt (72) for conveying is installed on the mounting frame (71). Inclined downward feeding guide troughs (73) are fixedly installed at both ends of the corrugated conveyor belt (72).

9. A grain counting machine according to claim 8, characterized in that: Each of the feeding guide channels (73) is equipped with a blocking assembly (74) for opening or closing the outlet of the feeding guide channel (73). The blocking assembly (74) includes a second rotating shaft (741) that is laterally rotatably mounted on the inner wall of the feeding guide channel (73). Multiple levers (742) are laterally arranged and fixedly mounted on the outer surface of the second rotating shaft (741). A transmission block (744) is fixedly mounted on the power input end of the second rotating shaft (741). A third cylinder (743) is mounted on the outer side of the feeding guide channel (73) to drive the second rotating shaft (741) to rotate via the transmission block (744).

10. A grain counting machine according to claim 8, characterized in that: A roller brush assembly (75) is installed at the inlet of the feeding guide trough (73).

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