Barium powder weighing tool

Abstract

The utility model provides a barium powder weighing tool, which comprises a material storage funnel, a first valve plate, a weighing funnel, a second valve plate and a conveying device, the material storage funnel is used for containing barium powder, the first valve plate is arranged at a discharge port of the material storage funnel, the weighing funnel comprises a weighing bin and a weighing sensor, and the second valve plate is arranged at the discharge port of the material storage funnel. A feeding port of the weighing bin right faces a discharging port of the storage hopper, the weighing sensor is connected with the weighing bin and used for indirectly weighing the weight of barium powder in the weighing bin, the second valve plate is arranged at the discharging port of the weighing bin, the conveying device is arranged in the storage hopper, and the second valve plate is arranged on the discharging port of the weighing bin. The conveying device is used for conveying the barium powder into the weighing bin. The automatic weighing and discharging device has the advantages that automatic weighing and discharging of barium powder are achieved, weighing errors are reduced, production efficiency is improved, pollution and potential safety hazards of the barium powder are reduced, the accuracy of the using amount of the barium powder in quartz crucible production is effectively enhanced, and the production quality of quartz crucibles is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic production technology, and in particular relates to a barium powder weighing tool. Background Technology

[0002] In the photovoltaic manufacturing industry, the pulling process of monocrystalline silicon requires the use of quartz crucibles. Whether the inner wall of the quartz crucible can quickly and uniformly form a crystalline layer significantly affects the stability of monocrystalline silicon pulling. The production quality of the quartz crucible is crucial for the rapid formation of the crystalline layer. During the production process of the quartz crucible, after the initial loading, barium powder is usually weighed manually. This method has a large weighing error and cannot guarantee the production quality of the quartz crucible. Furthermore, the repeated opening of the container lid during the weighing process easily leads to barium powder contamination. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a barium powder weighing tool, which effectively solves the technical problems of large weighing errors and easy barium powder contamination, and overcomes the shortcomings of the prior art.

[0004] The technical solution adopted by this utility model is: a barium powder weighing tool, comprising:

[0005] Storage funnel, used to hold barium powder;

[0006] The first valve plate is disposed at the discharge port of the storage funnel;

[0007] A weighing funnel includes a weighing bin and a weighing sensor. The inlet of the weighing bin is directly opposite the outlet of the storage funnel. The weighing sensor is connected to the weighing bin and is used to indirectly weigh the weight of barium powder in the weighing bin.

[0008] The second valve plate is located at the discharge port of the weighing chamber;

[0009] A conveying device is installed inside the storage hopper to convey the barium powder to the weighing bin.

[0010] Optionally, the conveying device includes a screw conveyor rod, which is rotatably connected to the storage hopper.

[0011] Optionally, the conveying device further includes a motor and a mounting frame, the mounting frame being connected to the inner wall of the storage hopper, the motor being mounted on the mounting frame and connected to the screw conveyor rod.

[0012] Optionally, a protective cover is also included, connected to the storage funnel and surrounding the outside of the weighing funnel.

[0013] Optionally, the protective cover is provided with a support plate, the weighing chamber is snapped onto the support plate, and the weighing sensor is located at the snapping position between the weighing chamber and the support plate.

[0014] Optionally, it also includes a controller, which is connected to the first valve plate, the second valve plate, and the weighing sensor.

[0015] Optionally, it also includes a support frame and a fixed platform, wherein the support frame is disposed on the fixed platform and connected to the side of the storage funnel.

[0016] Optionally, the fixed platform is provided with a rotating shaft for driving the support frame to rotate.

[0017] Optionally, a telescopic cylinder is provided on the rotating shaft, and the telescopic cylinder is connected to the support frame.

[0018] Optionally, the fixed platform is provided with at least one positioning groove, which is located on the rotation path of the outlet of the weighing funnel and is used to place the barium powder container.

[0019] The advantages and positive effects of this utility model are as follows: By adopting the above-mentioned technical solution, the automatic weighing and feeding of barium powder is realized instead of pure manual labor, reducing weighing errors, speeding up weighing and material handling, improving production efficiency, reducing barium powder pollution and safety hazards, and having a simple structure and convenient operation. It effectively enhances the accuracy of the amount of barium powder used in quartz crucible production, improves the stability of quartz crucibles, and ensures the production quality of quartz crucibles. In the process of single crystal production, it promotes the rapid and uniform formation of the crystallization layer in the quartz crucible, ensuring the pulling quality of single crystals. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a barium powder weighing tool provided in an embodiment of this utility model.

[0021] Figure 2 This is a schematic diagram of the overall structure of another barium powder weighing tool provided in this embodiment of the utility model.

[0022] Figure 3 This is a schematic diagram of the overall structure of another barium powder weighing tool provided in this embodiment of the utility model.

[0023] In the picture:

[0024] 1. Support frame 2. Storage hopper 3. Weighing bin

[0025] 4. Fixed platform; 5. Opening and closing cover; 6. Screw conveyor rod

[0026] 7. Mounting bracket; 8. First motor; 9. First valve plate

[0027] 10. Protective cover; 11. Support plate; 12. Weighing sensor

[0028] 13. Connecting plate; 14. Second valve plate; 15. Controller

[0029] 16. Rotating shaft; 17. Second motor; 18. Positioning groove

[0030] 19. Telescopic cylinder; 20. Mounting base; 21. Barium powder container Detailed Implementation

[0031] This utility model provides a barium powder weighing tool. The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0032] In the description of the embodiments of this utility model, it should be understood that the terms "top," "bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise expressly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model through specific circumstances.

[0033] like Figure 1 , Figure 2 and Figure 3As shown in the figure, an embodiment of this utility model discloses a barium powder weighing tool, including a storage funnel 2, a first valve plate 9, a weighing funnel, a second valve plate 14, and a conveying device. The storage funnel 2 is used to hold barium powder. To facilitate the addition of barium powder into the storage funnel 2, a hinged cover 5 is installed on the top of the storage funnel 2. The first valve plate 9 is installed on the outlet of the storage funnel 2. By setting the first valve plate 9, when the barium powder in the weighing funnel reaches the set weight, it can be quickly closed to prevent the barium powder from flowing out, ensuring weighing accuracy. At the same time, when this tool is not in use, it can isolate the barium powder from the outside air to prevent barium powder contamination. The weighing funnel includes a weighing chamber 3 and a weighing sensor 12. The inlet of the weighing chamber 3 is directly opposite the outlet of the storage funnel 2. The weighing sensor 12 is connected to the weighing chamber 3 and is used to indirectly weigh the weight of the barium powder in the weighing chamber 3, ensuring the accuracy of the barium powder weight each time it is taken out. To facilitate the weighing of barium powder entering the weighing hopper 3, a second valve plate 14 is installed at the discharge port at the bottom of the weighing hopper 3. The second valve plate 14 can block the flow of barium powder, allowing the weighing sensor 12 to accurately and indirectly weigh the weight of the barium powder entering the weighing hopper 3. The specific structure and connection method of the first valve plate 9 and the second valve plate are reasonably set based on achieving their functions, and are not specifically limited here. To reduce the number of feeding operations, the storage funnel 2 contains a large amount of barium powder. Due to the special nature of powder flow, bridging of barium powder is prone to occur during the feeding process. To facilitate the flow of barium powder from the storage funnel 2 into the weighing hopper 3, a conveying device is installed inside the storage funnel 2. Place the barium powder container below the discharge port of the weighing bin 3, start the conveying device, open the first valve plate 9, and transfer the barium powder in the storage funnel 2 to the weighing bin 3. During the transfer process, the weighing sensor 12 indirectly weighs the barium powder. When the weight of the barium powder reaches the set weight, stop the conveying, close the first valve plate 9, open the second valve plate 12, and discharge the weighed barium powder in the weighing bin 3 into the barium powder container 21.

[0034] Specifically, the conveying device includes a screw conveyor 6, which is rotatably connected to the storage hopper 2. During rotation, the screw conveyor 6 continuously agitates the powder, making it easier to flow and transport, facilitating discharge. In some embodiments, to facilitate powder conveying, the screw conveyor 6 is vertically positioned relative to the outlet of the storage hopper 2.

[0035] Specifically, the conveying device also includes a first motor 8 and a mounting frame 7. The mounting frame 7 is located on the top of the storage hopper 2 and connected to the inner wall of the storage hopper 2. The first motor 8 is fixed on the mounting frame 7, and the output shaft of the first motor 8 is fixedly connected to the screw conveyor 6. The first motor 8 can drive the screw conveyor 6 to rotate.

[0036] Specifically, it also includes a protective cover 10, which is connected to the storage funnel 2 and surrounds the weighing funnel. The weighing chamber 3 and the weighing sensor 12 are located inside the protective cover 10, which is positioned below the storage funnel 2. The protective cover 10 is a cylindrical body, with its top fixedly connected to the bottom of the storage funnel 2. Optionally, to ensure the weighing accuracy of the weighing chamber 3 and prevent interference from the storage funnel 2, the top of the weighing chamber 3 is not connected to the storage funnel 2, i.e., there is a gap between the weighing chamber 3 and the storage funnel 2. To prevent the overflow of floating powder generated when barium powder is discharged from the storage funnel 2 to the weighing chamber 3, a protective cover 10 is fixed below the storage funnel 2, and the weighing chamber 3 is placed inside the protective cover 10.

[0037] Specifically, to facilitate the installation of the weighing chamber 3, a support plate 11 is fixed inside the protective cover 10. Since there is a gap between the storage funnel 2 and the weighing chamber 3, to reduce the overflow of barium powder when it enters the weighing chamber 3 from the storage funnel 2, the support plate 11 is designed as a partition, dividing the protective cover 10 into upper and lower parts. A through hole is opened in the center of the support plate 11 to fit the weighing chamber 3, allowing the weighing chamber 3 to snap onto the support plate 11. A load cell is located at the snap-fit ​​position between the weighing chamber and the support plate. A connecting plate 13 is fixed to the outer wall of the weighing chamber 3, and the connecting plate 13 snaps onto the support plate 11. A load cell 12 is fixed between the connecting plate 13 and the support plate 11. The specific structure and connection method of the load cell 12 can be reasonably set according to actual needs. By setting the load cell 12, the barium powder entering the weighing chamber 3 can be accurately measured, reducing weighing errors. The specific number of load cells 12 is not limited. In some embodiments, two load cells 12 are provided, symmetrically arranged on both sides of the weighing chamber 3. In other embodiments, multiple load cells 12 are provided, evenly arranged along the circumference of the weighing chamber 3. It can be understood that the load cells 12 weigh the barium powder in the weighing chamber 3, the weighing chamber 3, and the second valve plate 14, wherein the weights of the weighing chamber 3 and the second valve plate 14 are fixed and known. In this way, the weight of the barium powder in the weighing chamber 3 can be determined, thereby achieving indirect weighing of the barium powder in the weighing chamber 3.

[0038] For example, the barium powder weighing tool may also include a controller 15. In one embodiment of this invention, the controller 15 is disposed inside the protective cover 10. The controller 15 is electrically connected to the weighing sensor 12, the first valve plate 9, and the second valve plate 14, and may also be further connected to the first motor 8. The controller 15 sets the weighing weight of the weighing sensor 12 according to the required weight of barium powder for the quartz crucible. When it is necessary to weigh barium powder, the controller 15 controls the first valve plate 9 to open and starts the first motor 8. The first motor 8 drives the screw conveyor 6 to rotate, allowing the barium powder to enter the weighing chamber 3. When the weight in the weighing chamber 3 reaches the set weight, the controller 15 controls the first valve plate 9 to close and stops the first motor 8, stopping the transmission of barium powder. The controller 15 controls the second valve plate 14 to open, discharging the weighed barium powder from the weighing chamber 3 into the barium powder container 21, and then closes the second valve plate 14.

[0039] Preferably, the device also includes a support frame 1 and a fixed platform 4. The support frame 1 is mounted on the fixed platform 4 and connected to the side of the storage funnel 2. The storage funnel 2 and the weighing funnel are mounted on the fixed platform 4 via the support frame 1. The barium powder container 21 can be placed on the fixed platform 4 relative to the discharge port of the weighing funnel for easy material removal.

[0040] Preferred, such as Figure 2 As shown, a rotating shaft 16 is provided on the fixed platform 4, and a support frame 1 is provided on the rotating shaft 16 for driving the support frame 1 to rotate. In some embodiments, a vertically arranged rotating shaft 16 is rotatably connected to the center of the fixed platform 4, and a second motor 17 is connected to the bottom of the rotating shaft 16 and fixed to the bottom of the fixed platform 4. The rotating shaft 16 passes through the fixed platform 4 and is fixedly connected to the support frame 1. The second motor 17 can drive the support frame 1 to rotate through the rotating shaft 16. Multiple barium powder containers 21 can be placed around the fixed platform 4. As the support frame 1 rotates, the weighing funnel can quantitatively feed multiple barium powder containers 21, speeding up the weighing speed of barium powder and thus improving production efficiency.

[0041] Preferably, the fixed platform 4 is provided with at least one positioning groove 18. The positioning groove 18 is arranged circumferentially on the fixed platform 4 along the rotation path of the weighing funnel outlet. The shape of the positioning groove 18 is adapted to the bottom of the barium powder container 21 and is used to place the barium powder container 21. According to the rotation angle of the support frame 1, multiple positioning grooves 18 can be opened on the fixed platform 4. The distance between the positioning groove 18 and the support frame 1 is the same as the distance between the weighing bin 3 and the support frame 1. Even when the barium powder container 21 is placed in the positioning groove 18, the weighing bin 3 can quantitatively dispense it. By setting the positioning groove 18, the weighing bin 3 can accurately dock with the barium powder container 21 during rotation, preventing barium powder leakage and waste.

[0042] Preferred, such as Figure 3As shown, a telescopic cylinder 19 is mounted on the rotating shaft 16, and a support frame 1 is mounted on the telescopic cylinder 19. Since the weight of barium powder required to produce quartz crucibles of different sizes varies, the height of the barium powder container 21 also varies. In some embodiments, to enable the weighing chamber 3 to discharge barium powder from containers 21 of different heights, the rotating shaft 16 passes through the fixed platform 4, and a mounting base 20 is fixed above the fixed platform 4. The rotating shaft 16 can drive the mounting base 20 to rotate. A vertically arranged telescopic cylinder 19 is fixed to the top of the mounting base 20, and a support rod is fixed to the movable end of the telescopic cylinder 19. The telescopic cylinder 19 extends and retracts, causing the storage funnel 2 and the weighing funnel to move up and down, adjusting the discharge height of the weighing chamber 3, thus adapting it to discharge barium powder from containers 21 of different heights. To minimize floating powder during barium powder discharge, the telescopic cylinder 19 can drive the discharge port of the weighing chamber 3 into the barium powder container 21 for discharge.

[0043] Example 1: As Figure 1 As shown, a barium powder weighing tool includes a support frame 1, a storage funnel 2, a weighing funnel, and a conveying device. The L-shaped support frame 1 is fixed to a fixed platform 4, and the storage funnel 2 is fixed on the support frame 1. A hinged cover 5 is installed above the storage funnel 2. The weighing funnel includes a weighing chamber 3 and a weighing sensor 12. The inlet of the weighing chamber 3 faces the outlet of the storage funnel 2, and the weighing sensor 12 is connected to the weighing chamber 3. A conveying device is installed inside the storage funnel 2. The conveying device includes a screw conveyor 6, which is vertically arranged relative to the outlet of the storage funnel 2. A first motor 8 is fixed to the top of the storage funnel 2 using a mounting bracket 7. The output shaft of the first motor 8 is fixedly connected to the screw conveyor 6, and the first motor 8 can drive the screw conveyor 6 to rotate. A first valve plate 9 is installed on the outlet of the storage funnel 2. A protective cover 10 is provided below the storage hopper 2. The protective cover 10 is a cylindrical body, and its top is fixedly connected to the bottom of the storage hopper 2. The weighing hopper is set inside the protective cover 10, and there is a gap between the weighing chamber 3 and the storage hopper 2. A support plate 11 is fixed inside the protective cover 10. The support plate 11 is set in the form of a partition and has through holes that fit with the weighing chamber 3, so that the weighing chamber 3 is snapped onto the support plate 11. A connecting plate 13 is fixed on the outer wall of the weighing chamber 3, and the connecting plate 13 is snapped onto the support plate 11. A weighing sensor 12 is fixed between the connecting plate 13 and the support plate 11. Two weighing sensors 12 are provided and are symmetrically arranged on both sides of the weighing chamber 3. A second valve plate 14 is installed on the discharge port at the bottom of the weighing chamber 3. A controller 15 is also provided inside the protective cover 10. The controller 15 is electrically connected to the first motor 8, the weighing sensor 12, the first valve plate 9, and the second valve plate 14. In this embodiment, barium powder is placed on the fixed platform 4 and placed in the symmetrical weighing bin 3 to complete the quantitative dispensing of barium powder.

[0044] Example 2: Figure 2As shown, a barium powder weighing tool includes a support frame 1, a storage funnel 2, a weighing funnel, and a conveying device. The L-shaped support frame 1 is mounted on a fixed platform 4, and the storage funnel 2 is fixed on the support frame 1. A hinged cover 5 is installed above the storage funnel 2. The weighing funnel includes a weighing bin 3 and a weighing sensor 12. The inlet of the weighing bin 3 faces the outlet of the storage funnel 2. The weighing sensor 12 is connected to the weighing bin 3. A conveying device is installed inside the storage funnel 2. The conveying device includes a screw conveyor 6, which is vertically arranged relative to the outlet of the storage funnel 2. A first motor 8 is fixed to the top of the storage funnel 2 using a mounting bracket 7. The output shaft of the first motor 8 is fixedly connected to the screw conveyor 6, and the first motor 8 can drive the screw conveyor 6 to rotate. A first valve plate 9 is installed at the outlet of the storage funnel 2. A protective cover 10 is provided below the storage hopper 2. The protective cover 10 is a cylindrical body, and its top is fixedly connected to the bottom of the storage hopper 2. The weighing hopper is set inside the protective cover 10, and there is a gap between the weighing chamber 3 and the storage hopper 2. A support plate 11 is fixed inside the protective cover 10. The support plate 11 is set in the form of a partition and has through holes that fit with the weighing chamber 3, so that the weighing chamber 3 is snapped onto the support plate 11. A connecting plate 13 is fixed on the outer wall of the weighing chamber 3, and the connecting plate 13 is snapped onto the support plate 11. A weighing sensor 12 is fixed between the connecting plate 13 and the support plate 11. Two weighing sensors 12 are provided and are symmetrically arranged on both sides of the weighing chamber 3. A second valve plate 14 is installed on the discharge port at the bottom of the weighing chamber 3. A controller 15 is also provided inside the protective cover 10. The controller 15 is electrically connected to the first motor 8, the weighing sensor 12, the first valve plate 9, and the second valve plate 14.

[0045] In this embodiment, a vertically arranged rotating shaft 16 is rotatably connected to the center of the fixed platform 4, and a second motor 17 is connected to the bottom of the rotating shaft 16. The second motor 17 is fixed to the bottom of the fixed platform 4. The rotating shaft 16 passes through the fixed platform 4 and is fixedly connected to the support frame 1. According to the rotation angle of the support frame 1, the fixed platform 4 is provided with multiple positioning grooves 18, which are arranged along the circumference of the fixed platform 4 on the rotation path of the weighing funnel outlet. By placing multiple barium powder containers 21 in the positioning grooves 18, the quantitative dispensing of multiple barium powder containers 21 can be completed as the support frame 1 rotates.

[0046] Example 3: Figure 3As shown, a barium powder weighing tool includes a support frame 1, a storage funnel 2, a weighing funnel, and a conveying device. The L-shaped support frame 1 is mounted on a fixed platform 4, and the storage funnel 2 is fixed on the support frame 1. A hinged cover 5 is installed above the storage funnel 2. The weighing funnel includes a weighing chamber 3 and a weighing sensor 12. The inlet of the weighing chamber 3 faces the outlet of the storage funnel 2, and the weighing sensor 12 is connected to the weighing chamber 3. A conveying device is installed inside the storage funnel 2. The conveying device includes a screw conveyor 6, which is vertically arranged relative to the outlet of the storage funnel 2. A first motor 8 is fixed to the top of the storage funnel 2 using a mounting bracket 7. The output shaft of the first motor 8 is fixedly connected to the screw conveyor 6, and the first motor 8 can drive the screw conveyor 6 to rotate. A first valve plate 9 is installed at the outlet of the storage funnel 2. A protective cover 10 is provided below the storage hopper 2. The protective cover 10 is a cylindrical body, and its top is fixedly connected to the bottom of the storage hopper 2. The weighing funnel is set inside the protective cover 10, and there is a gap between the weighing chamber 3 and the storage hopper 2. A support plate 11 is fixed inside the protective cover 10. The support plate 11 is set in the form of a partition and has through holes to fit the weighing funnel, so that the weighing chamber 3 is snapped onto the support plate 11. A connecting plate 13 is fixed on the outer wall of the weighing chamber 3, and the connecting plate 13 is snapped onto the support plate 11. A weighing sensor 12 is fixed between the connecting plate 13 and the support plate 11. Three weighing sensors 12 are set and evenly arranged along the circumference of the weighing chamber 3. A second valve plate 14 is installed on the discharge port at the bottom of the weighing chamber 3. A controller 15 is also provided inside the protective cover 10. The controller 15 is electrically connected to the first motor 8, the weighing sensor 12, the first valve plate 9, and the second valve plate 14.

[0047] In this embodiment, a vertically arranged rotating shaft 16 is rotatably connected to the center of the fixed platform 4, and a second motor 17 is connected to the bottom of the rotating shaft 16. The second motor 17 is fixed to the bottom of the fixed platform 4. The rotating shaft 16 passes through the fixed platform 4 and is fixedly connected to the support frame 1. According to the rotation angle of the support frame 1, the fixed platform 4 is provided with multiple positioning grooves 18, which are arranged along the circumference of the fixed platform 4 on the rotation path of the weighing funnel outlet. After the rotating shaft 16 passes through the fixed platform 4, a mounting base 20 is fixed above the fixed platform 4, and the rotating shaft 16 can drive the mounting base 20 to rotate. A vertically arranged telescopic cylinder 19 is fixed to the top of the mounting base 20, and a support rod is fixed to the movable end of the telescopic cylinder 19. The telescopic cylinder 19 can extend and retract to drive the storage funnel 2 and the weighing funnel to move up and down, adjust the discharge height of the weighing funnel, and thus be suitable for quantitative dispensing of barium powder containers 21 of different heights.

[0048] The advantages and positive effects of this utility model are:

[0049] 1. It replaces manual labor to achieve automatic weighing and feeding of barium powder, reducing weighing errors, speeding up weighing and material handling, improving production efficiency, effectively enhancing the accuracy of barium powder usage in quartz crucible production, improving the stability of quartz crucibles, ensuring the production quality of quartz crucibles, and promoting the rapid and uniform formation of crystallization layers in quartz crucibles during single crystal production, thus ensuring the pulling quality of single crystals.

[0050] 2. By setting a valve plate, the discharge port can be quickly closed. When no material is being discharged, the storage funnel is in a closed state, reducing the contamination of barium powder.

[0051] 3. By setting up a protective cover, the overflow of barium powder during feeding can be reduced, thus reducing safety hazards.

[0052] 4. The required weight of barium powder varies when producing quartz crucibles of different specifications. Simply reset the weighing weight of the weighing sensor to complete the quantitative feeding of barium powder. The structure is simple and the operation is convenient.

[0053] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A barium powder weighing tool, characterized in that, include: Storage funnel, used to hold barium powder; The first valve plate is disposed at the discharge port of the storage funnel; A weighing funnel includes a weighing bin and a weighing sensor. The inlet of the weighing bin is directly opposite the outlet of the storage funnel. The weighing sensor is connected to the weighing bin and is used to indirectly weigh the weight of barium powder in the weighing bin. The second valve plate is located at the discharge port of the weighing chamber; A conveying device is installed inside the storage hopper to convey the barium powder to the weighing bin.

2. The barium powder weighing tool according to claim 1, characterized in that: The conveying device includes a screw conveyor rod, which is rotatably connected to the storage hopper.

3. The barium powder weighing tool according to claim 2, characterized in that The conveying device also includes a motor and a mounting frame. The mounting frame is connected to the inner wall of the storage hopper, and the motor is mounted on the mounting frame and connected to the screw conveyor.

4. The barium powder weighing tool according to any one of claims 1 to 3, characterized in that: It also includes a protective cover, which is connected to the storage funnel and surrounds the outside of the weighing funnel.

5. The barium powder weighing tool according to claim 4, characterized in that: The protective cover is equipped with a support plate, the weighing chamber is snapped onto the support plate, and the weighing sensor is located at the snapping position between the weighing chamber and the support plate.

6. The barium powder weighing tool according to any one of claims 1 to 3 and 5, characterized in that: It also includes a controller, which is connected to the first valve plate, the second valve plate and the weighing sensor.

7. The barium powder weighing tool according to any one of claims 1 to 3 and 5, characterized in that: It also includes a support frame and a fixed platform, wherein the support frame is disposed on the fixed platform and connected to the side of the storage funnel.

8. The barium powder weighing tool according to claim 7, characterized in that: The fixed platform is equipped with a rotating shaft for driving the support frame to rotate.

9. The barium powder weighing tool according to claim 8, characterized in that: A telescopic cylinder is provided on the rotating shaft, and the telescopic cylinder is connected to the support frame.

10. The barium powder weighing tool of claim 7, wherein: The fixed platform is provided with at least one positioning groove, which is located on the rotation path of the discharge port of the weighing funnel and is used to place the barium powder container.

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