Material metering device and metering method

Abstract

The application discloses a kind of material metering device and metering method, the material metering device includes rack and electronic scale;The rack is provided with power roller, steering roller, support roller and conveying belt;The electronic scale is set on the rack, and the electronic scale includes weighing roller, and weighing roller is supported on conveying belt;Several sub-bin partitions are provided on the conveying belt along the length direction, and the sub-bin partition includes first partition and second partition arranged in herringbone shape.The material metering device and metering method, by material is unloaded into each material bin, when material bin is located directly above electronic scale, the material in material bin is weighed, and the total weight of material can be obtained by adding weighing result, which greatly reduces weighing frequency and simplifies calculation formula.Herringbone-shaped sub-bin partition is used, and the first partition and the second partition of the sub-bin partition are not fixedly connected at the top, which can effectively reduce the influence of adjacent bins on weighing result and improve weighing accuracy.

Description

Technical Field

[0001] This invention relates to a material metering device and metering method, belonging to the field of material weighing technology. Background Technology

[0002] Concrete is a common material used in the construction industry, and it needs to be weighed. Currently, construction sites often use weighbridges to weigh concrete, but weighbridges occupy a large construction area, and weighbridges have low measurement accuracy and cannot be moved.

[0003] Electronic belt scales can weigh materials without interrupting material transport, leading to their rapid application in material weighing. Current electronic belt scales minimize sampling intervals and increase sampling data, then integrate the weighing results to obtain the total weight of the passing material. However, during weighing, because the conveyor belt is rotating, the weight of material outside the scale's weighing range acts on the conveyor belt, affecting the belt scale's tension and thus the weighing result. Furthermore, the degree of influence on the weighing structure is dynamic, depending on the weight of the material on the conveyor belt, making it difficult to effectively eliminate the effect. Additionally, electronic belt scales are commonly used for weighing granular, powdery, or lumpy materials and have not yet been applied to fluid substances such as concrete. Summary of the Invention

[0004] In view of the problem that materials outside the weighing area of ​​existing electronic belt scales have a dynamic impact on the weighing results, this application provides a material metering device and metering method to eliminate the influence of materials outside the weighing area on the weighing results and improve the material weighing accuracy.

[0005] To solve the above technical problems, the present invention includes the following technical solutions:

[0006] A material metering device, the material metering device comprising a frame and an electronic scale;

[0007] The frame is equipped with a power roller, a steering roller, a support roller, and a conveyor belt. The power roller and the steering roller are respectively located at both ends of the frame, and the conveyor belt surrounds the power roller and the steering roller. Skirt structures are provided on both sides of the conveyor belt along its length.

[0008] The electronic scale is mounted on the frame, located between the power roller and the steering roller, and includes a weighing roller that rests on the conveyor belt.

[0009] Several compartment partitions are arranged along the length of the conveyor belt, dividing the conveyor belt into several material compartments. The spacing between two adjacent compartment partitions matches the width of the electronic scale. The compartment partitions include a first partition and a second partition arranged in a herringbone shape. The bottom of the first partition and the second partition are fixedly connected to the conveyor belt, and the tops are non-contact. The bottom spacing between the first partition and the second partition matches the spacing between the weighing roller of the electronic scale and the adjacent support roller.

[0010] Furthermore, a positioning device is provided in the cavity formed by the first partition and the second partition, and the material metering device also includes a controller. The controller is set on the frame or electronic scale and is used to determine the position of the compartment partition and control whether the electronic scale performs weighing according to the position of the compartment partition.

[0011] Furthermore, the distance between the two weighing rollers on both sides of the electronic scale is D1, and the distance between the weighing rollers and the adjacent support rollers is D2; the bottom length of the same material bin is D3, and the distance between the bottoms of the first and second partitions of the same compartment is D4; thus, the following conditions are met.

[0012] D3 / 2+D4 / 2≤D1 / 2+D2≤D3 / 2+D4.

[0013] Furthermore, the conveyor belt scraper includes a scraper structure and a scraper fixing structure;

[0014] The scraper fixing structure includes a mounting plate, a fixing rod, a rotating shaft, an ear plate, and a spring;

[0015] A mounting plate is set on each side of the frame at one end of the power roller, and the two mounting plates are set parallel to each other; mounting holes are set opposite to each other on the two mounting plates, and the two ends of the rotating shaft extend out of the mounting holes of the mounting plates. The rotating shaft is rotatably connected to the mounting plates through bearings.

[0016] Each end of the rotating shaft is provided with an ear plate, and the ear plate is provided with a strip hole; one end of the fixing rod is fixed to the outside of the mounting plate, and the other end passes through the strip hole on the ear plate and extends out. The end of the fixing rod is provided with a limit structure. The spring is sleeved on the fixing rod, and both ends are in contact with the limit structure and the ear plate. The spring force acting on the ear plate can make the rotating shaft have a tendency to rotate.

[0017] The scraper structure includes a first scraper, one end of which is mounted on a rotating shaft, and the other end of which can press against the conveyor belt under the action of a spring.

[0018] Furthermore, the scraper structure also includes a second scraper for removing the skirt structure, the second scraper being disposed on the side of the first scraper and forming an obtuse angle with the first scraper.

[0019] Furthermore, the scraper structure also includes an extension plate, one end of which is connected to the first scraper and the second scraper, and the other end gradually narrows and is provided with a figure-eight shaped shrinkage baffle.

[0020] Furthermore, the limiting structure is an adjusting nut, and the end of the fixing rod is provided with an external thread and is threadedly connected to the adjusting nut. Rotating the adjusting nut can adjust the distance between the adjusting nut and the ear plate, and adjust the force of the spring.

[0021] Accordingly, this application also provides a material metering method, which uses the aforementioned material metering device to meter materials, specifically including the following steps:

[0022] Step 1: Place the frame in a suitable position, control the rotation of the power roller to drive the conveyor belt;

[0023] Step 2: When the material bin is unloaded and directly above the electronic scale, weigh the material bin and adjust the starting zero point of the electronic scale.

[0024] Step 3: As the conveyor belt rotates, unload the material onto the end of the conveyor belt near the guide roller. The material enters each material bin. The electronic scale weighs each material bin that moves directly overhead and records the weighing result G. i , where i = 1, 2, ..., N, and N is the sequence number of the last count;

[0025] Step 4: Calculate the total weight G of the materials using an electronic scale. Z ,in,

[0026] Furthermore, a positioning device is provided in the cavity formed by the first partition and the second partition, and the material metering device also includes a controller, which is mounted on the frame or electronic scale.

[0027] In steps two and three, the position of the compartment partition is determined by the positioning device, and the controller determines whether the material bin is directly above the electronic scale. When the determination is yes, the electronic scale is controlled to weigh the material bin.

[0028] Furthermore, the material metering device includes a scraper structure and a scraper fixing structure; the scraper fixing structure includes a mounting plate, a fixing rod, a rotating shaft, ear plates, and a spring; a mounting plate is respectively set on both sides of the frame at one end of the power roller, and the two mounting plates are arranged parallel to each other; mounting holes are provided opposite to each other on the two mounting plates, and the two ends of the rotating shaft extend out of the mounting holes of the mounting plates, and the rotating shaft is rotatably connected to the mounting plates through bearings; an ear plate is provided at each end of the rotating shaft, and a strip hole is provided on the ear plate; one end of the fixing rod is fixed to the outside of the mounting plate, and the other end passes through the strip hole on the ear plate and extends out; a limit structure is provided at the end of the fixing rod; the spring is sleeved on the fixing rod, and both ends are in contact with the limit structure and the ear plate; the spring force acting on the ear plate can make the rotating shaft have a tendency to rotate; the scraper structure includes a first scraper, one end of the first scraper is installed on the rotating shaft, and the other end can press against the conveyor belt under the action of the spring force;

[0029] In step three, when the conveyor belt rotates, the first scraper presses against the conveyor belt and cleans the material on the conveyor belt; when the compartment partition comes into contact with the first scraper, the force of the first scraper increases, causing the shaft to rotate, the ear plate to squeeze the spring, the first scraper cleans the material on the first partition, and allows the compartment partition to pass smoothly through the first scraper.

[0030] The present invention, by adopting the above technical solutions, has the following advantages and positive effects compared with the prior art: The material metering device and metering method provided in this application, by unloading materials into various material bins, weighs the materials in the bins only when the bins are directly above the electronic scale. The total weight of the materials is obtained by adding the results of each weighing. Compared with calculation using integration, this greatly reduces the frequency of weighing and simplifies the calculation formula. The use of herringbone-shaped partitions, with the tops of the first and second partitions not fixedly connected, effectively reduces the influence of adjacent bins on weighing results, improving weighing accuracy. By setting up a positioning device and controller, it can automatically determine whether the material bin is directly above the electronic scale, and automatically start the electronic scale for weighing when the determination result is yes, simplifying the operation process. By setting up a scraper structure and a scraper fixing structure, the materials on the conveyor belt and the partitions can be cleaned. Attached Figure Description

[0031] Figure 1 This is a top view of the material metering device in this invention;

[0032] Figure 2 This is a front view of the material metering device in this invention;

[0033] Figure 3 This is a cross-sectional view of the material metering device in this invention;

[0034] Figure 4This is a schematic diagram of the compartment partition in the present invention;

[0035] Figure 5 This is a schematic diagram of the scraper structure in this invention;

[0036] Figure 6 This is a schematic diagram of the scraper fixing structure in this invention.

[0037] The numbers in the diagram are as follows:

[0038] 10-Frame; 11-Power roller; 12-Directional roller; 13-Support roller; 14-Conveyor belt; 15-Skirt structure; 16-Compartment partition; 161-First partition; 162-Second partition; 163-Positioning device; 17-Scraper structure; 171-First scraper; 172-Second scraper; 173-Extension plate; 174-Contraction baffle; 18-Scraper fixing structure; 181-Mounting plate; 182-Fixing rod; 183-Rotating shaft; 184-Ear plate; 185-Spring; 19-Feeding hopper;

[0039] 20 - Electronic scale; 21 - Weighing roller. Detailed Implementation

[0040] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the material metering device and metering method provided by the present invention. The advantages and features of the present invention will become clearer from the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0041] Example 1

[0042] Combination Figures 1 to 3 As shown, the material metering device provided in this embodiment includes a frame 10 and an electronic scale 20. The frame 10 is equipped with a power roller 11, a steering roller 12, a support roller 13, and a conveyor belt 14. The power roller 11 and steering roller 12 are respectively located at both ends of the frame 10. The conveyor belt 14 surrounds the power roller 11 and steering roller 12, and skirt structures 15 are provided on both sides of the conveyor belt 14 along its length. To facilitate unloading materials onto the conveyor belt, a loading funnel 19 can also be provided on the frame. The loading funnel 19 is located at one end of the frame near the steering roller. A support roller is provided on the frame below the outlet of the loading funnel 19. This support roller bears the vertical load generated by the material tilting, preventing it from affecting the balancing structure. Of course, a support device can also be provided below the frame in this embodiment. For example, the support device can be a fixed support platform, adjustable support legs, etc. This embodiment does not limit the specific structure of the support device.

[0043] Combination Figures 1 to 3As shown, the electronic scale 20 is mounted on the frame 10, located between the power roller 11 and the steering roller 12. The electronic scale 20 includes a weighing roller 21, which is supported on the conveyor belt 14. The distance between the two weighing rollers 21 on both sides of the electronic scale 20 is D1, and the distance between the weighing roller 21 and the adjacent support roller 13 is D2.

[0044] Combination Figures 1 to 4 As shown, a plurality of compartment partitions 16 are provided along the length of the conveyor belt 14, which divide the conveyor belt 14 into a plurality of material compartments. The spacing between two adjacent compartment partitions 16 is matched with the width of the electronic scale 20.

[0045] The compartment partition 16 includes a first partition 161 and a second partition 162 arranged in a herringbone shape. The bottoms of the first partition 161 and the second partition 162 are fixedly connected to the conveyor belt 14, while the tops are non-contact. Assuming the bottom length of the same material bin is D3, and the distance between the bottoms of the first partition 161 and the second partition 162 of the same compartment partition 16 is D4, then the following condition is satisfied: D3 / 2 + D4 / 2 ≤ D1 / 2 + D2 ≤ D3 / 2 + D4. This arrangement ensures that when one material bin is directly above the electronic scale 20, the support roller adjacent to the electronic scale is located below the compartment partition and close to the end of the adjacent material bin. The load of the adjacent material bin is borne by the support roller 13, thereby minimizing the impact of adjacent material bins on the weighing results.

[0046] In one specific embodiment, to prevent material from entering the cavity of the compartment partition 16, both ends of the compartment partition 16 are sealed with flexible material. The tops of the first partition 161 and the second partition 162 are connected by flexible material. When the compartment partition 16 is transported to the power roller 11 or the steering roller 12, the tops of the first partition 161 and the second partition 162 tend to separate. By using flexible material, the compartment partition 16 can turn smoothly, and during weighing, the forces on the first partition 161 and the second partition 162 do not transfer to each other, thus not affecting the weighing result. The compartment partition and the skirt structure can also be connected by flexible material. To facilitate turning, the skirt structure is usually made of corrugated rubber material, and the top of the skirt structure can unfold during turning.

[0047] In one specific embodiment, combined with Figures 1 to 4As shown, a positioning device 163 is installed in the cavity formed by the first partition 161 and the second partition 162. The material metering device also includes a controller, which is installed on the frame 10 or the electronic scale 20. The controller is used to collect the position information of the positioning device 163 to determine the position of the compartment partition 16, and to control whether the electronic scale 20 performs weighing based on the position of the compartment partition 16. The positioning device 163 can be a positioning chip. A matching positioning base station is installed on the frame 10. The base station receives the signal from the positioning chip and calculates the distance between the positioning chip and the base station. Based on the distance information between the positioning chip and the base station, the controller determines the position of the compartment partition 16 and further determines whether the material bin is directly above the electronic scale 20. If the determination is yes, the electronic scale 20 is started to weigh. The positioning device 163 can also be an RFID electronic tag. A reader is installed on the frame 10 to identify the content and distance of the RFID electronic tag. Then, the controller determines the position of the compartment partition 16 and further determines whether the material bin is directly above the electronic scale 20. If the determination is yes, the electronic scale 20 is started to weigh.

[0048] In one specific embodiment, combined with Figures 1 to 6As shown, the frame 10 is also equipped with a scraper structure 17 and a scraper fixing structure 18. The scraper fixing structure 18 includes a mounting plate 181, a fixing rod 182, a rotating shaft 183, an ear plate 184, and a spring 185. A mounting plate 181 is respectively provided on both sides of one end of the frame 10 located at the power roller 11, and the two mounting plates 181 are arranged parallel to each other. Mounting holes are provided opposite to each other on the two mounting plates 181. The two ends of the rotating shaft 183 extend from the mounting holes of the mounting plates 181, and the rotating shaft 183 is rotatably connected to the mounting plates 181 via bearings. An ear plate 184 is provided at each end of the rotating shaft 183. One end of the ear plate 184 is fixedly connected to the rotating shaft 183, and the other end extends towards the upper left. A strip-shaped hole is provided on the ear plate 184. The width direction of the ear plate 184 is consistent with the length direction of the rotating shaft 183, and the strip-shaped hole is arranged along the length direction of the ear plate 184. One end of the fixing rod 182 is fixed to the outside of the mounting plate 181 and located above the rotating shaft 183. The other end of the fixing rod 182 faces downward to the left and passes through the strip hole on the ear plate 184 and extends out. A limiting structure is provided at the end of the fixing rod 182. The spring 185 is sleeved on the fixing rod 182, and both ends are in contact with the limiting structure and the ear plate 184. The elastic force of the spring 185 acting on the ear plate 184 can cause the rotating shaft 183 to have a clockwise rotation tendency. The scraper structure 17 includes a first scraper 171. One end of the first scraper 171 is mounted on the rotating shaft 183, and the other end can press against the conveyor belt 14 under the elastic force of the spring 185. In this embodiment, the first scraper 171, under the elastic force of the spring 185, presses against the conveyor belt 14 to clean the material adhering to the conveyor belt 14. When the first partition 161 of the compartment partition 16 contacts the first scraper 171, the force of the first scraper 171 increases, causing the rotating shaft 183 to rotate counterclockwise. The ear plate 184 compresses the spring 185, causing the first scraper 171 to clean the material on the first partition 161 and allowing the compartment partition 16 to pass smoothly through the first scraper 171. Furthermore, the limiting structure is an adjusting nut, which is threadedly connected to the fixing rod 182. Rotating the adjusting nut can adjust the distance between the adjusting nut and the ear plate 184, and adjust the force of the spring 185. A shim can be placed between the adjusting nut and the spring 185.

[0049] In one specific embodiment, combined with Figures 1 to 6As shown, based on the previous embodiment, the scraper structure 17 further includes a second scraper 172 for removing material from the side skirt structures 15. The first scraper 171 has a trapezoidal structure, with one end wider than the other end, and the second scraper 172 has a triangular structure. The second scraper 172 is disposed on the side of the first scraper 171, forming an obtuse angle with the first scraper 171. The first scraper 171 matches the unfolded shape of the side skirt structure 15 at the power roller 11. By using the first scraper 171 and the second scraper 172 in conjunction, material adhering to both the conveyor belt 14 and the side skirt structure 15 can be removed simultaneously.

[0050] In one specific embodiment, combined with Figures 1 to 6 As shown, based on the previous embodiment, the scraper structure 17 further includes an extension plate 173. One end of the extension plate 173 is connected to the first scraper 171 and the second scraper 172, and the other end gradually tapers and is provided with a V-shaped shrinkage baffle 174. The shrinkage baffle 174 and the extension plate 173 help the material fall into the required position, and the shrinkage baffle 174 can also prevent the material from spilling from the side.

[0051] Example 2

[0052] This embodiment provides a material metering method, which uses the material metering device of Embodiment 1 for material metering. The following will describe the method in conjunction with... Figures 1 to 6 The method is further described below. Specifically, the method includes the following steps:

[0053] Step 1: Place the frame 10 in a suitable position, control the power roller 11 to rotate and drive the conveyor belt 14 to rotate;

[0054] Step 2: When the material bin is unloaded and directly above the electronic scale 20, weigh the material bin and adjust the starting zero point of the electronic scale 20.

[0055] Step 3: As the conveyor belt 14 rotates, the material is unloaded to the end of the conveyor belt near the guide roller. The material enters each material bin, and the electronic scale 20 weighs each material bin that moves directly overhead and records the weighing result G. i , where i = 1, 2, ..., N, and N is the sequence number of the last count;

[0056] Step 4: Calculate the total weight G of the materials using an electronic scale. Z ,in,

[0057] The material metering method provided in this embodiment weighs the material only when it is unloaded into each material bin and is directly above the electronic scale. The total weight of the material is obtained by summing the results of each weighing. Compared to calculations using integration, this significantly reduces the frequency of weighing and simplifies the calculation formula. The use of herringbone-shaped partitions, with the tops of the first and second partitions not fixedly connected, effectively reduces the influence of adjacent bins on weighing results, improving weighing accuracy.

[0058] Furthermore, a positioning device 163 is provided in the cavity formed by the first partition 161 and the second partition 162, and the material metering device also includes a controller, which is disposed on the frame or electronic scale.

[0059] In steps two and three, the position of the compartment partition 16 is determined by the positioning device, and the system controls whether the material bin is directly above the electronic scale 20. This embodiment, by setting up the positioning device 163 and the controller, can automatically determine whether the material bin is directly above the electronic scale, and automatically start the electronic scale for weighing when the determination result is yes, simplifying the operation process.

[0060] Furthermore, the material metering device includes a scraper structure 17 and a scraper fixing structure 18; for the specific structures of the scraper fixing structure and the scraper structure, please refer to Embodiment 1. In step three, when the conveyor belt rotates, the first scraper abuts against the conveyor belt and cleans the material on the conveyor belt; when the compartment partition comes into contact with the first scraper, the force of the first scraper increases, causing the shaft to rotate, the ear plate to compress the spring, the first scraper cleans the material on the first partition, and allows the compartment partition to pass smoothly through the first scraper. This embodiment, by setting the scraper structure and the scraper fixing structure, can clean the material on the conveyor belt and the compartment partition.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A material metering device, characterized in that, The material metering device includes a frame and an electronic scale; The frame is equipped with a power roller, a steering roller, a support roller, and a conveyor belt. The power roller and the steering roller are respectively located at both ends of the frame, and the conveyor belt surrounds the power roller and the steering roller. Skirt structures are provided on both sides of the conveyor belt along its length. The electronic scale is mounted on the frame, located between the power roller and the steering roller, and includes a weighing roller that rests on the conveyor belt. Several compartment partitions are arranged along the length of the conveyor belt, dividing the conveyor belt into several material compartments. The spacing between two adjacent compartment partitions matches the width of the electronic scale. The compartment partitions include a first partition and a second partition arranged in a herringbone shape. The bottom of the first partition and the second partition are fixedly connected to the conveyor belt, and the tops are non-contact. The bottom spacing between the first partition and the second partition matches the spacing between the weighing roller of the electronic scale and the adjacent support roller.

2. The material metering device as described in claim 1, characterized in that, A positioning device is provided in the cavity formed by the first partition and the second partition. The material metering device also includes a controller, which is set on the frame or electronic scale to determine the position of the compartment partition and control whether the electronic scale performs weighing according to the position of the compartment partition.

3. The material metering device as described in claim 1 or 2, characterized in that, The distance between the two weighing rollers on both sides of the electronic scale is D1, and the distance between the weighing rollers and the adjacent support rollers is D2; the bottom length of the same material bin is D3, and the distance between the bottoms of the first and second partitions of the same compartment is D4; then the following conditions are met. D3 / 2+D4 / 2≤D1 / 2+D2≤D3 / 2+D4.

4. The material metering device as described in claim 1, characterized in that, The conveyor belt scraper includes a scraper structure and a scraper fixing structure; The scraper fixing structure includes a mounting plate, a fixing rod, a rotating shaft, an ear plate, and a spring; A mounting plate is set on each side of the frame at one end of the power roller, and the two mounting plates are set parallel to each other; mounting holes are set opposite to each other on the two mounting plates, and the two ends of the rotating shaft extend out of the mounting holes of the mounting plates. The rotating shaft is rotatably connected to the mounting plates through bearings. Each end of the rotating shaft is provided with an ear plate, and the ear plate is provided with a strip hole; one end of the fixing rod is fixed to the outside of the mounting plate, and the other end passes through the strip hole on the ear plate and extends out. The end of the fixing rod is provided with a limit structure. The spring is sleeved on the fixing rod, and both ends are in contact with the limit structure and the ear plate. The spring force acting on the ear plate can make the rotating shaft have a tendency to rotate. The scraper structure includes a first scraper, one end of which is mounted on a rotating shaft, and the other end of which can press against the conveyor belt under the action of a spring.

5. The material metering device as described in claim 4, characterized in that, The scraper structure also includes a second scraper for removing the skirt structure. The second scraper is disposed on the side of the first scraper and forms an obtuse angle with the first scraper.

6. The material metering device as described in claim 5, characterized in that, The scraper structure also includes an extension plate, one end of which is connected to the first scraper and the second scraper, and the other end gradually narrows and is provided with a figure-eight shaped shrinkage baffle.

7. The material metering device as described in claim 4, characterized in that, The limiting structure is an adjusting nut. The end of the fixing rod is provided with an external thread and is threadedly connected to the adjusting nut. Rotating the adjusting nut can adjust the distance between the adjusting nut and the ear plate, and adjust the force of the spring.

8. A material metering method, characterized in that, Material metering using the material metering device of claim 1 specifically includes the following steps: Step 1: Place the frame in a suitable position, control the rotation of the power roller to drive the conveyor belt; Step 2: When the material bin is unloaded and directly above the electronic scale, weigh the material bin and adjust the starting zero point of the electronic scale. Step 3: As the conveyor belt rotates, unload the material onto the end of the conveyor belt near the guide roller. The material enters each material bin. The electronic scale weighs each material bin that moves directly overhead and records the weighing result G. i , where i = 1, 2, ..., N, and N is the sequence number of the last count; Step 4: Calculate the total weight G of the materials using an electronic scale. Z ,in, 9. The material metering method as described in claim 8, characterized in that, A positioning device is provided in the cavity formed by the first partition and the second partition. The material metering device also includes a controller, which is mounted on the frame or electronic scale. In steps two and three, the position of the compartment partition is determined by the positioning device, and the controller determines whether the material bin is directly above the electronic scale. When the determination is yes, the electronic scale is controlled to weigh the material bin.

10. The material metering method as described in claim 8, characterized in that, The material metering device includes a scraper structure and a scraper fixing structure. The scraper fixing structure includes a mounting plate, a fixing rod, a rotating shaft, ear plates, and a spring. A mounting plate is installed on each side of the frame at one end of the power roller, with the two mounting plates spaced parallel to each other. Mounting holes are provided opposite to each other on the two mounting plates. The two ends of the rotating shaft extend from the mounting holes on the mounting plates, and the rotating shaft is rotatably connected to the mounting plates via bearings. An ear plate is provided at each end of the rotating shaft, and a slotted hole is provided on the ear plate. One end of the fixing rod is fixed to the outside of the mounting plate, and the other end passes through the slotted hole on the ear plate and extends out. A limiting structure is provided at the end of the fixing rod. The spring is sleeved on the fixing rod, and both ends contact the limiting structure and the ear plate. The spring force acting on the ear plate can cause the rotating shaft to have a tendency to rotate. The scraper structure includes a first scraper, one end of which is installed on the rotating shaft, and the other end can press against the conveyor belt under the action of the spring force. In step three, when the conveyor belt rotates, the first scraper presses against the conveyor belt and cleans the material on the conveyor belt; when the compartment partition comes into contact with the first scraper, the force of the first scraper increases, causing the shaft to rotate, the ear plate to squeeze the spring, the first scraper cleans the material on the first partition, and allows the compartment partition to pass smoothly through the first scraper.

Images