Blanking and weighing device and automatic sampling equipment

Abstract

This utility model relates to the field of material sampling technology, and discloses a material feeding and weighing device and an automatic sampling equipment. The material feeding and weighing device includes a crucible pan on which at least two crucibles of different shapes are placed; a first rotating component is disposed below the crucible pan for driving the crucible pan to rotate; a weighing component is disposed below the crucible pan for lifting the crucibles for weighing; a vision component is fixed on the mounting base of the weighing component for identifying the shape of the crucibles at the sampling station; a material feeding component is disposed above the crucible pan and includes a support frame and at least two feeding hoppers disposed on the support frame, the at least two feeding hoppers having different outlet shapes; a second rotating component is disposed above the support frame for driving the material feeding component to rotate so that feeding hoppers of the same shape are aligned with the crucibles at the sampling station. This utility model has strong versatility, a high degree of automation, and is easy to use, realizing automatic adaptation and accurate sampling of crucibles of various shapes with a single device.

Description

Technical Field

[0001] This utility model relates to the field of material sampling technology, and in particular to a material weighing device and an automatic sampling equipment. Background Technology

[0002] In the field of unmanned coal quality analysis systems, it is often necessary to accurately dispose of powdered samples (such as coal powder) into crucibles of different shapes. For example, volatile matter is measured in round crucibles, while sulfur is measured in boat-shaped rectangular crucibles. Existing sample-dispensing mechanisms typically have fixed dispensing methods or angles, lacking universal adaptability to different crucible shapes, resulting in problems such as sample spillage and uneven distribution. Furthermore, existing dispensing mechanisms have low automation levels and are inconvenient to use.

[0003] Therefore, there is an urgent need for a material feeding and weighing device and an automatic sampling device to solve the above-mentioned technical problems. Utility Model Content

[0004] Based on the above, the purpose of this utility model is to provide a material feeding and weighing device and an automatic sampling device that can automatically identify the shape of the crucible and select a suitable feeding hopper for sample feeding, while automatically weighing the sample, thus achieving accurate sample feeding and uniform spreading.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The material feeding and weighing device includes:

[0007] A crucible tray, wherein the crucible tray is provided with at least two placement holes for placing at least two crucibles of different shapes;

[0008] A first rotating component is disposed below the crucible tray. The output end of the first rotating component is connected to the crucible tray and is used to drive the crucible tray to rotate, so as to selectively move one of the crucibles to the sample loading station.

[0009] A weighing assembly is disposed below the crucible tray. The weighing assembly includes a mounting base, a top rod that is vertically mounted on the mounting base, and a weighing platform disposed on the top rod. The top rod and the weighing platform can pass through the placement hole of the sample loading station to lift the crucible for weighing.

[0010] A vision component, fixed to the mounting base, is used to identify the shape of the crucible located at the sample loading station, and is communicatively connected to the controller;

[0011] A material feeding assembly is disposed above the crucible pan. The material feeding assembly includes a support frame and at least two material feeding hoppers disposed on the support frame. The outlet shapes of the at least two material feeding hoppers are different.

[0012] The second rotating component is disposed above the support frame and is communicatively connected to the controller. The output end of the second rotating component is connected to the support frame and is used to drive the material feeding component to rotate so that the material feeding hopper with the same shape is aligned with the crucible at the sample feeding station.

[0013] In some possible implementations, a lifting assembly is also included, which is disposed below the crucible pan and is used to drive the crucible pan to move up and down.

[0014] In some possible implementations, a vibration assembly is also included, which is fixed below the support frame and is used to drive the material feeding assembly to vibrate.

[0015] In some possible implementations, there are two hoppers, which are symmetrically arranged with respect to the rotation center of the support frame. One hopper has a circular outlet shape, and the other has a long, narrow outlet shape.

[0016] In some possible implementations, the crucible tray has at least two concentric circles, and each concentric circle has a plurality of placement holes distributed along the circumference.

[0017] In some possible implementations, a first translation component is also included, comprising a linear module extending radially along the crucible pan, the weighing component being disposed on the linear module, the linear module being capable of driving the weighing component to move radially along the crucible pan.

[0018] In some possible implementations, a second translation component is also included, the output end of which is fixedly connected to the second rotation component, for driving the second rotation component and the material feeding component to move radially along the crucible pan.

[0019] In some possible implementations, a cleaning assembly is also included, comprising a dust collection box, a vacuum fan, a vacuum pipe, and a suction cup. The dust collection box is connected to the vacuum fan, the vacuum fan is connected to the vacuum pipe, the vacuum pipe is connected to the suction cup, and the suction cup is used to extract residual material from the hopper located at the cleaning station.

[0020] In some possible implementations, a dust collection box is also included, located below the material discharge assembly, for receiving materials falling from the hopper.

[0021] Automatic sampling equipment, including the material feeding and weighing device described in any of the above schemes.

[0022] The beneficial effects of this utility model are:

[0023] The material feeding and weighing device provided by this utility model features a first rotating component that drives a crucible pan to rotate, moving crucibles of specific shapes to the sample feeding station. A vision component automatically identifies the shape of the crucible at the feeding station and feeds the identification result back to the controller. A second rotating component and feeding hoppers with different shaped outlets allow the feeding hopper matching the crucible shape to be rotated directly above the feeding station, aligning the hopper outlet with the corresponding crucible, improving compatibility, achieving precise sample feeding and uniform distribution, and effectively reducing sample spillage. A weighing component automatically weighs the crucible and sample at the feeding station. The vision component is fixed to the mounting base of the weighing component, ensuring a consistent relative position between the two, guaranteeing the consistency between the identification and weighing positions, reducing cumulative errors from multiple positioning attempts, and improving the repeatability of positioning and weighing. This utility model is highly versatile, highly automated, and easy to use, achieving automatic adaptation and precise sample feeding of crucibles of various shapes with a single device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the material weighing device provided in this embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the feeding assembly, the vibration assembly, and the second rotation assembly provided in this embodiment of the utility model;

[0026] Figure 3 This is a top view of the material feeding assembly provided in this embodiment of the utility model.

[0027] In the picture:

[0028] 1. Crucible tray; 11. Placement hole; 2. First rotating assembly; 3. Weighing assembly; 31. Mounting base; 32. Top rod; 33. Weighing platform; 4. Vision assembly; 5. Discharge assembly; 51. Support frame; 52. Discharge hopper; 521. Outlet; 6. Second rotating assembly; 7. Lifting assembly; 8. Vibration assembly; 9. First translation assembly; 10. Second translation assembly; 20. Cleaning assembly; 201. Dust extraction fan; 202. Dust extraction pipe; 203. Suction cup; 204. Placement rack; 30. Dust collection box; 100. Crucible. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 3As shown, this utility model provides a material feeding and weighing device that can be used in an unmanned coal quality analysis system to achieve accurate delivery of coal powder samples. The material feeding and weighing device includes a crucible pan 1, a first rotating component 2, a weighing component 3, a vision component 4, a material feeding component 5, and a second rotating component 6. The crucible pan 1 is used to support crucibles 100, and the crucibles 100 are used to receive samples delivered by the material feeding component 5. Specifically, the crucible pan 1 is provided with at least two placement holes 11, each placement hole 11 can hold one crucible 100, and at least two placement holes 11 can hold at least two different types of crucibles 100. Exemplarily, in this embodiment, the crucible pan 1 holds a circular crucible 100 and a long, narrow crucible 100, wherein the circular crucible 100 is used when measuring volatile matter, and the long, narrow crucible 100 is used when measuring sulfur content. It should be noted that the number of crucibles 100 placed on the crucible tray 1, and the specific shape of each crucible 100, can be set as needed and are not limited to this embodiment. The first rotating component 2 is disposed below the crucible tray 1, and its output end is connected to the crucible tray 1 to drive the crucible tray 1 to rotate, thereby rotating the crucible 100 to be sampled to the sample loading position. Optionally, in this embodiment, the crucible tray 1 is circular, and multiple crucibles 100 are evenly arranged along the circumference on the crucible tray 1. By driving the crucible tray 1 to rotate through the first rotating component 2, crucibles 100 of a specific shape to be sampled can be rotated to the sample loading position. Optionally, the first rotating component 2 is a rotary motor. Furthermore, the material weighing device also includes a lifting assembly 7, located below the crucible pan 1, used to drive the crucible pan 1 to rise and fall. This allows the crucible pan 1 to descend during weighing to facilitate weighing of the crucible 100 by the weighing assembly 3; and to rise during rotation to facilitate rotation and avoid interference with the weighing assembly 3. Specifically, the lifting assembly 7 is positioned below the first rotating assembly 2, and its output end is fixedly connected to the first rotating assembly 2 to drive both the first rotating assembly 2 and the crucible pan 1 to rise and fall simultaneously. Optionally, the lifting assembly 7 can be a cylinder, a hydraulic cylinder, an electric push rod, etc.

[0034] Weighing component 3 is located below crucible pan 1 and is used to automatically weigh the crucible 100 and the sample inside at the sample loading station. Weighing component 3 includes a mounting base 31, a lift rod 32 mounted on the mounting base 31, and a weighing platform 33 located on the upper end of the lift rod 32. A weighing sensor is installed inside the weighing platform 33. When the crucible pan 1 rotates to the sample loading station, the lowering of the crucible pan 1 and / or the raising of the lift rod 32 allow the lift rod 32 and weighing platform 33 to pass through the placement hole 11 to lift the crucible 100 for weighing. This weighing component 3 communicates with the controller and can feed the weighing data back to the system. Vision component 4 is fixed to the mounting base 31 and can acquire images of the crucible 100 at the sample loading station and identify the shape of the crucible 100. Vision component 4 also communicates with the controller and can feed the identified results back to the controller. Specifically, vision component 4 can be an industrial camera. In this embodiment, the vision component 4 is fixed on the mounting base 31 of the weighing component 3. This integrated design not only makes the device structure compact, but also ensures the consistency of the identification position and the weighing position because the relative positions of the vision component 4 and the weighing component 3 are fixed, reducing the cumulative error caused by multiple positioning and improving the repeatability accuracy of positioning and weighing.

[0035] The material feeding assembly 5 is disposed above the crucible pan 1. The material feeding assembly 5 includes a support frame 51 and at least two feeding hoppers 52 disposed on the support frame 51. The outlets 521 of the at least two feeding hoppers 52 have different shapes. Exemplarily, in this embodiment, there are two feeding hoppers 52, which are symmetrically arranged with respect to the rotation center of the support frame 51. One feeding hopper 52 has a circular outlet 521 to adapt to the circular crucible 100, and the other feeding hopper 52 has a long and narrow outlet 521 to adapt to the long and narrow crucible 100. It should be noted that the number of feeding hoppers 52 and the shape of the outlets 521 of each feeding hopper 52 can be set according to actual needs and are not limited to this embodiment. Optionally, the material feeding and weighing device also includes a vibration assembly 8, which is fixed below the support frame 51 and is used to drive the material feeding assembly 5 to vibrate, thereby accelerating the falling of materials and improving the feeding efficiency. The second rotating component 6 is positioned above the support frame 51, and its output end is connected to the support frame 51. It drives the entire feeding component 5 to rotate, enabling automatic switching between different feeding hoppers 52 to adapt to different crucibles 100. Simultaneously, the controller is communicatively connected to the second rotating component 6. Based on the shape of the crucible 100 identified by the vision component 4, the controller controls the rotation of the second rotating component 6, aligning the feeding hopper 52 with the same shaped outlet 521 with the crucible 100 at the sample loading station. This embodiment controls the matching of the feeding hopper 52 with the crucible 100 through shape recognition, ensuring that the coal sample accurately falls into the corresponding shaped crucible 100. Especially for elongated crucibles 100, the dedicated elongated outlet 521 effectively prevents sample spillage, improving the accuracy and reliability of sample loading, achieving uniform sample distribution, and effectively reducing sample spillage. The feeding and weighing device in this embodiment is highly versatile, automated, and easy to use, achieving automatic adaptation and precise sample loading for multiple shaped crucibles 100 with a single device.

[0036] Optionally, the crucible pan 1 has at least two concentric circles, each with multiple placement holes 11 evenly distributed along the circumference. This arrangement allows the crucible pan 1 to hold more crucibles 100, resulting in a more compact structure and improved space utilization. Furthermore, the material feeding and weighing device also includes a first translation component 9 located below the crucible pan 1. The first translation component 9 drives the weighing component 3 to move radially along the crucible pan 1, enabling the weighing component 3 to move precisely to directly below any one of the crucibles 100 on the crucible pan 1. Specifically, the first translation component 9 is a linear module extending radially along the crucible pan 1, and the mounting base 31 of the weighing component 3 is fixed to the slider of the linear module. The linear module can drive the weighing component 3 to move radially along the crucible pan 1. Furthermore, the material feeding and weighing device also includes a second translation component 10. The output end of the second translation component 10 is fixedly connected to the second rotation component 6, and is used to drive the second rotation component 6 and the material feeding component 5 to move radially along the crucible pan 1, so as to move the material feeding hopper 52 directly above any one ring of crucibles 100 on the crucible pan 1. Specifically, the second translation component 10 is a motor screw module. In this embodiment, within a limited equipment footprint, a high-density layout of crucibles 100 is achieved by utilizing space in a two-dimensional plane (circumferential rotation + radial movement); at the same time, combined with the weighing component 3 which can move radially along the crucible pan 1, crucibles 100 at different radial positions on the crucible pan 1 can be weighed efficiently, greatly increasing the number of crucibles 100 that can be processed in a single operation, resulting in high analytical throughput.

[0037] In some embodiments, the material weighing device further includes a cleaning assembly 20, which includes a dust collection box, a vacuum fan 201, a vacuum pipe 202, a suction cup 203, and a placement rack 204. The dust collection box and the vacuum fan 201 are fixed to the placement rack 204. The exhaust port of the vacuum fan 201 is connected to the dust collection box, and the suction port of the vacuum fan 201 is connected to the vacuum pipe 202. The vacuum pipe 202 is connected to the suction cup 203, which is used to suck up residual material in the material hopper 52 located at the cleaning station. It should be noted that the second translation assembly 10 and the second rotation assembly 6 cooperate to drive the material hopper 52 to move between the sample feeding station and the cleaning station. This cleaning assembly 20 realizes automatic cleaning of the material hopper 52, ensuring the cleanliness of the equipment and the purity of the sample, and avoiding cross-contamination of materials. Furthermore, the material feeding and weighing device also includes a dust collection box 30, which is located below the material feeding assembly 5. The dust collection box 30 is used to receive materials that accidentally fall from the material feeding hopper 52 during its movement, preventing materials from spilling onto other parts of the equipment and effectively keeping the equipment clean.

[0038] The working principle of the material feeding and weighing device provided in this embodiment for sample feeding and weighing is as follows: The first rotating component 2 drives the crucible pan 1 to rotate, so as to rotate a crucible 100 to be fed to the sample feeding station; then, the first translation component 9 drives the weighing component 3 to move radially along the crucible pan 1, so that the vision component 4 is aligned with the placement hole 11 at the sample feeding station to identify the shape of the crucible 100 located at the sample feeding station, and sends the identification result to the controller; the controller controls the second rotating component 6 to operate according to the identified shape of the crucible 100. The system rotates and switches the hopper 52, which matches the shape of the crucible 100, to the top of the sample loading station. Simultaneously, the second translation component 10 is controlled to align the outlet 521 of the switched hopper 52 with the crucible 100. After alignment, the system starts the sample loading program, using the vibration component 8 to vibrate the hopper 52 to add coal sample to the crucible 100. After sample loading, the second translation component 10 is controlled to move the hopper 5 away, while the second rotation component 6 switches the hopper 52, which has just finished loading, to the cleaning station for cleaning. Simultaneously, the lifting component 7 drives the crucible pan 1 to descend, and the top rod 32 of the weighing component 3 rises to support and lift the crucible 100, thus weighing the crucible 100. After weighing, the top rod 32 descends, the lifting component 7 drives the crucible pan 1 to rise, and the first rotation component 2 drives the crucible pan 1 to rotate, thus switching the next crucible 100 to the sample loading station.

[0039] This embodiment also provides an automatic sampling device, including the aforementioned material feeding and weighing device. This automatic sampling device, by setting at least two types of feeding hoppers 52 with different outlets 521, automatically identifies the shape of the crucible 100 through a vision component 4, and switches the feeding hopper 52 with the corresponding outlet 521 in conjunction with a second rotating component 6. This achieves automatic matching and precise sample addition of a single device to crucibles 100 of various shapes, improving the device's versatility and automation level.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A blank weighing device, characterized by include: A crucible tray (1) is provided with at least two placement holes (11) for placing at least two crucibles (100) of different shapes. The first rotating component (2) is disposed below the crucible tray (1). The output end of the first rotating component (2) is connected to the crucible tray (1) and is used to drive the crucible tray (1) to rotate so as to selectively move one of the crucibles (100) to the sample loading station. Weighing assembly (3) is located below the crucible tray (1). The weighing assembly (3) includes a mounting base (31), a top rod (32) that is vertically mounted on the mounting base (31), and a weighing platform (33) mounted on the top rod (32). The top rod (32) and the weighing platform (33) can pass through the placement hole (11) of the sample loading station to lift the crucible (100) for weighing. A vision component (4) is fixed on the mounting base (31). The vision component (4) is used to identify the shape of the crucible (100) located at the sample loading station. The vision component (4) is communicatively connected to the controller. The material feeding assembly (5) is disposed above the crucible pan (1). The material feeding assembly (5) includes a support frame (51) and at least two material feeding hoppers (52) disposed on the support frame (51). The outlets (521) of the at least two material feeding hoppers (52) have different shapes. The second rotating component (6) is disposed above the support frame (51) and is connected in communication with the controller. The output end of the second rotating component (6) is connected to the support frame (51) and is used to drive the material feeding component (5) to rotate so that the material feeding hopper (52) with the same shape is aligned with the crucible (100) of the sample feeding station.

2. The blank weighing apparatus according to claim 1, wherein It also includes a lifting assembly (7), which is located below the crucible pan (1) and is used to drive the crucible pan (1) to rise and fall.

3. The blank weighing apparatus according to claim 1, wherein It also includes a vibration component (8), which is fixed below the support frame (51) and is used to drive the material dropping component (5) to vibrate.

4. The blank weighing apparatus according to claim 1, wherein There are two hoppers (52), which are symmetrically arranged with respect to the rotation center of the support frame (51). The outlet (521) of one hopper (52) is circular, and the outlet (521) of the other hopper (52) is elongated.

5. The material feeding and weighing device according to claim 1, characterized in that, The crucible tray (1) has at least two concentric circles, and each concentric circle has a plurality of placement holes (11) distributed along the circumference.

6. The blank weighing apparatus according to claim 5, wherein It also includes a first translation component (9), which includes a linear module extending radially along the crucible pan (1), and the weighing component (3) is disposed on the linear module. The linear module can drive the weighing component (3) to move radially along the crucible pan (1).

7. A blank weighing device according to claim 5 or 6, characterised in that It also includes a second translation component (10), the output end of which is fixedly connected to the second rotation component (6) for driving the second rotation component (6) and the material dropping component (5) to move radially along the crucible pan (1).

8. The material charging apparatus of claim 1, wherein, It also includes a cleaning assembly (20), which includes a dust collection box, a vacuum blower (201), a vacuum pipe (202), and a suction cup (203). The dust collection box is connected to the vacuum blower (201), the vacuum blower (201) is connected to the vacuum pipe (202), the vacuum pipe (202) is connected to the suction cup (203), and the suction cup (203) is used to suck up residual materials in the hopper (52) located at the cleaning station.

9. The material charging apparatus of claim 1, wherein, It also includes a dust collection box (30), which is located below the material discharge assembly (5) and is used to receive materials falling from the discharge hopper (52).

10. An automatic sampling device, characterized by Includes the material weighing device as described in any one of claims 1-9.

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