Sample weighing device for specific surface area test

Abstract

The utility model discloses a sample weighing device for specific surface area testing, which comprises a test board, two groups of fixing components are arranged at the bottom of the test board, a U-shaped sample tube is clamped by the fixing components, the fixing components are arranged on two sides of the bottom of the U-shaped sample tube, and a horizontal translation component is arranged on the test board above the clamped U-shaped sample tube. A vertical rod is horizontally and movably arranged on the horizontal translation assembly, the inner side of the vertical rod transversely moves along the horizontal translation assembly, a variable-diameter clamping assembly is vertically and movably arranged on the vertical rod, a glass funnel is clamped in the variable-diameter clamping assembly, and the bottom of the glass funnel is inserted into an opening of the U-shaped sample tube through the variable-diameter clamping assembly. The utility model has the advantages that the stable placement of samples can be realized, and the damage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery material detection, and particularly relates to a sample weighing device for specific surface area testing. Background Art

[0002] The specific surface area of battery materials (such as lithium cobaltate, lithium manganate, lithium iron phosphate, graphite, ternary materials, etc.) is a particularly important physical property index. The specific surface area has a great influence on the preparation of slurry, the coating of electrode sheets, the first Coulomb efficiency of batteries and the cycle performance, etc. Understanding the surface characteristics of battery materials has a good guiding effect on improving their performance and parameters. Currently, when weighing samples for specific surface area testing, the samples need to be placed at the bottom of the U-shaped sample tube without contaminating the sample pipeline. Moreover, both the U-shaped sample tube and the long glass funnel are made of glass and are relatively thin. When weighing samples, the U-shaped sample tube and the glass funnel are often damaged, especially the bottom of the sample tube and the connection between the sample tube and the funnel are prone to breakage. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a sample weighing device for specific surface area testing, which can realize the stable placement of samples and avoid breakage.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A sample weighing device for specific surface area testing, characterized in that it includes a test bench. Two groups of fixing components are arranged at the bottom of the test bench. The fixing components clamp the U-shaped sample tube. The fixing components are arranged on both sides of the bottom of the U-shaped sample tube. A horizontal translation component is arranged above the clamped U-shaped sample tube on the test bench. A vertical rod is horizontally movably arranged on the horizontal translation component. The inner side of the vertical rod moves horizontally along the horizontal translation component. A variable-diameter clamping component is vertically movably arranged on the vertical rod. A glass funnel is clamped inside the variable-diameter clamping component. The bottom of the glass funnel is inserted into the opening of the U-shaped sample tube through the variable-diameter clamping component.

[0006] Preferably, the fixing component includes a fixing base, a first motor, a lifting plate and fixing arms. The fixing base is installed on the test bench. There are two groups of fixing arms. One end of each group of fixing arms is movably hinged to the fixing base. A connecting column is arranged below the fixing arm near the movable hinge end. The lifting plates are arranged at the front and rear ends of the fixing base. The lifting plates are V-shaped. Two groups of V-shaped arranged guiding grooves are formed inside the lifting plates. Both ends of the connecting column are movably arranged in the guiding grooves. A longitudinally arranged movable groove is formed below the fixing base. The first motor is fixedly installed in the fixing base below the movable groove. The output end of the first motor is in transmission connection with a first screw rod in the movable groove. A fixing rod is connected and arranged in the movable groove at the bottoms of the two lifting plates. The first screw rod penetrates through the fixing rod and is in threaded transmission connection with the inside of the fixing rod.

[0007] Preferably, the fixing arm is L-shaped and is made of flexible rubber blocks.

[0008] Preferably, a support block is arranged on the top of the fixing base. The support block is embedded in the fixing base. A pressure sensor is arranged between the support block and the fixing base.

[0009] Preferably, the horizontal translation component includes a horizontal mounting base, a second motor and a second screw rod. The horizontal mounting base is arranged on the test bench above the U-shaped sample tube. The second screw rod is horizontally movably arranged in the horizontal mounting base. The second motor is arranged on one side of the horizontal mounting base. The output end of the second motor is in transmission connection with the second screw rod. The second screw rod penetrates through the back of the vertical rod and is in threaded transmission connection with the vertical rod.

[0010] Preferably, a third screw rod is vertically movably arranged in the vertical rod. A third motor is arranged at the top of the vertical rod. The output end of the third motor is in transmission connection with the third screw rod.

[0011] Preferably, the variable-diameter clamping component includes a clamping seat, a fourth motor, clamping plates and an adjusting plate. A clamping opening is vertically formed in the middle of the clamping seat. Adjusting grooves are also horizontally formed around the clamping opening in the clamping seat. The adjusting plate is circular. The adjusting plate is rotatably arranged in the adjusting grooves. There are several groups of clamping plates, which are arranged in an annular array between the adjusting plate and the clamping seat. An adjusting column block is arranged above the outer end of the clamping plate. An arc-shaped groove is arranged on the adjusting plate corresponding to the adjusting column block. The adjusting column block is movably arranged in the arc-shaped groove. An annular worm gear is fixedly arranged outside the adjusting plate. The fourth motor is arranged in the clamping seat. The output end of the fourth motor is connected with a worm. The worm is in meshing transmission with the annular worm gear.

[0012] Preferably, the third screw rod penetrates through the inside of the clamping seat. The clamping seat moves up and down along the vertical rod.

[0013] Preferably, the glass funnel is clamped and arranged inside the clamping plate, and a flexible anti-slip rubber is arranged at the contact end between the inner side of the clamping plate and the glass funnel.

[0014] Preferably, an inverted frustum-shaped rubber seat is arranged around the clamping opening under the clamping seat, and the minimum outer diameter of the frustum-shaped rubber seat is smaller than the inner diameter of the opening of the U-shaped sample tube, and the maximum outer diameter is larger than the inner diameter of the opening of the U-shaped sample tube.

[0015] In summary, the beneficial effects of the present utility model are as follows: the present utility model can stably and accurately clamp the U-shaped sample tube and the glass funnel, and then accurately place the glass funnel at the opening of the U-shaped sample tube to avoid breakage. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall clamping structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the sample injection state structure of the present utility model;

[0018] Figure 3 is a schematic diagram of the state of the fixing component of the present utility model before clamping;

[0019] Figure 4 is a schematic diagram of the state of the fixing component of the present utility model after clamping;

[0020] Figure 5 is a schematic diagram of the variable-diameter clamping component structure of the present utility model. Detailed Embodiments

[0021] The following further describes the detailed embodiments of the present utility model in conjunction with the drawings. This embodiment does not constitute a limitation to the present utility model.

[0022] As Figures 1 to 5 shown, a sample weighing device for specific surface area testing includes a test bench 1. Two groups of fixing components are arranged at the bottom of the test bench 1. The fixing components clamp the U-shaped sample tube 3. The fixing components are arranged on both sides of the bottom of the U-shaped sample tube 3. A horizontal translation component is arranged above the clamped U-shaped sample tube 3 on the test bench 1. A vertical rod 2 is horizontally movably arranged on the horizontal translation component. The inner side of the vertical rod 2 moves horizontally along the horizontal translation component. A variable-diameter clamping component is vertically movably arranged on the vertical rod 2. A glass funnel 4 is clamped and arranged inside the variable-diameter clamping component. The bottom of the glass funnel 4 is inserted into the opening of the U-shaped sample tube 3 through the variable-diameter clamping component.

[0023] The fixing component includes a fixing base 5, a first motor 6, a lifting plate 7 and fixing arms 8. The fixing base 5 is installed on the test bench 1. There are two groups of fixing arms 8. One end of each group of fixing arms 8 is movably hinged to the fixing base 5. A connecting column 9 is arranged below the fixing arm 8 near the movable hinge end. The lifting plates 7 are arranged at the front and rear ends of the fixing base 5. The lifting plates 7 are V-shaped. Two groups of V-shaped arranged guiding grooves 10 are opened inside the lifting plates 7. Both ends of the connecting column 9 are movably arranged in the guiding grooves 10. An axially arranged movable groove 11 is opened below the fixing base 5. The first motor 6 is fixedly installed in the fixing base 5 below the movable groove 11. The output end of the first motor 6 is drivingly connected with a first screw rod 12 in the movable groove 11. A fixing rod 13 is connected and arranged in the movable groove 11 at the bottoms of the two lifting plates 7. The first screw rod 12 penetrates through the fixing rod 13 and is in threaded driving connection with the inside of the fixing rod 13.

[0024] The fixing arm 8 is L-shaped and is made of flexible rubber blocks.

[0025] A support block 14 is arranged on the top of the fixing base 5. The support block 14 is embedded in the fixing base 5. A pressure sensor is arranged between the support block 14 and the fixing base 5.

[0026] The horizontal translation component includes a horizontal mounting base 15, a second motor 16 and a second screw rod 17. The horizontal mounting base 15 is arranged on the test bench 1 above the U-shaped sample tube 3. The second screw rod 17 is horizontally movably arranged in the horizontal mounting base 15. The second motor 16 is arranged on one side of the horizontal mounting base 15. The output end of the second motor 16 is drivingly connected with the second screw rod 17. The second screw rod 17 penetrates through the back of the vertical rod 2 and is in threaded driving connection with the vertical rod 2.

[0027] A third screw rod 19 is vertically movably arranged in the vertical rod 2. A third motor 18 is arranged at the top of the vertical rod 2. The output end of the third motor 18 is drivingly connected with the third screw rod 19.

[0028] The variable-diameter clamping component includes a clamping seat 20, a fourth motor 21, clamping plates 22 and an adjusting plate 23. A clamping opening 24 is vertically opened in the middle of the clamping seat 20. Adjusting grooves are also horizontally opened around the clamping opening 24 in the clamping seat 20. The adjusting plate 23 is circular. The adjusting plate 23 is rotatably arranged in the adjusting grooves. There are several groups of clamping plates 22, which are arranged in an annular array between the adjusting plate 23 and the clamping seat 20. An adjusting column block 25 is arranged above the outer end of the clamping plate 22. An arc-shaped groove 26 is arranged on the adjusting plate 23 corresponding to the adjusting column block 25. The adjusting column block 25 is movably arranged in the arc-shaped groove 26. An annular worm gear 27 is fixedly arranged on the outside of the adjusting plate 23. The fourth motor 21 is arranged in the clamping seat 20. The output end of the fourth motor 21 is connected with a worm 28. The worm 28 is in meshing drive with the annular worm gear 27.

[0029] The third screw rod 19 penetrates through the inside of the clamping seat 20, and the clamping seat 20 moves up and down along the vertical rod 2.

[0030] The glass funnel 4 is clamped and arranged in the clamping plate 22, and a flexible anti-slip rubber is arranged at the contact end between the inner side of the clamping plate 22 and the glass funnel 4.

[0031] Below the clamping seat 20, an inverted frustum-shaped rubber seat 29 is arranged around the clamping opening 24. The minimum outer diameter of the frustum-shaped rubber seat 29 is smaller than the inner diameter of the opening of the U-shaped sample tube 3, and the maximum outer diameter is larger than the inner diameter of the opening of the U-shaped sample tube 3.

[0032] The utility model can stably and precisely clamp the U-shaped sample tube and the glass funnel, and then precisely place the glass funnel at the opening of the U-shaped sample tube to avoid breakage.

[0033] The above are only the preferred embodiments of the utility model, and are not used to limit the utility model. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the essence and protection scope of the utility model, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the technical solution of the utility model.

Claims

1. A sample weighing device for specific surface area testing, characterized in that: The invention comprises a test bench, wherein two groups of fixing components are arranged at the bottom of the test bench, wherein the fixing components clamp a U-shaped sample tube, and the fixing components are arranged at both sides of the bottom of the U-shaped sample tube; wherein a horizontal translation component is arranged above the supported U-shaped sample tube; wherein a vertical rod is horizontally movable on the horizontal translation component, and the inner side of the vertical rod moves laterally along the horizontal translation component; wherein a reducing clamping component is vertically movable on the vertical rod; wherein a glass funnel is clamped in the reducing clamping component, and the bottom of the glass funnel is inserted into the opening of the U-shaped sample tube through the reducing clamping component.

2. A sample weighing device for specific surface area testing according to claim 1, characterized in that: The fixing assembly includes a fixing seat, a first motor, a lifting plate and a fixing arm. The fixing seat is installed on the test bench. The fixing arms are provided with two groups. One end of the two fixing arms is movably hinged to the fixing seat. A connecting column is provided below the fixing arm near the movable hinge end. The lifting plate is provided at the front and rear ends of the fixing seat. The lifting plate is V-shaped. Two groups of V-shaped guide grooves are provided on the inner side of the lifting plate. Both ends of the connecting column are movably provided in the guide grooves. A longitudinally arranged movable groove is provided at the lower part of the fixing seat. The first motor is fixedly installed in the fixing seat below the movable groove. The output end of the first motor is transmission-connected with a first screw in the movable groove. A fixing rod is connected to the bottom of the two groups of lifting plates in the movable groove. The first screw penetrates the fixing rod and is transmission-connected with the internal thread of the fixing rod.

3. A sample weighing device for specific surface area testing according to claim 2, characterized in that: The fixing arm is L-shaped and is a flexible rubber block.

4. A sample weighing device for specific surface area testing according to claim 2, characterized in that: A support block is arranged on the top of the fixing seat, the support block is embedded in the fixing seat, and a pressure sensor is arranged between the support block and the fixing seat.

5. A sample weighing device for specific surface area testing according to claim 1, characterized in that: The horizontal translation assembly includes a horizontal mounting seat, a second motor and a second screw. The horizontal mounting seat is arranged on a test bench above the U-shaped sample tube. The second screw is movably arranged horizontally in the horizontal mounting seat. The second motor is arranged on one side of the horizontal mounting seat. The output end of the second motor is connected to the second screw by transmission. The second screw passes through the back of the vertical rod and is connected to the vertical rod by threaded transmission.

6. A sample weighing device for specific surface area testing according to claim 1, characterized in that: A third screw rod is vertically movably arranged in the vertical rod, a third motor is arranged on the top of the vertical rod, and an output end of the third motor is drivingly connected to the third screw rod.

7. A sample weighing device for specific surface area testing according to claim 6, characterized in that: The variable diameter clamping assembly includes a clamping seat, a fourth motor, a clamping plate and an adjusting plate. A clamping opening is vertically opened in the middle of the clamping seat, and an adjusting groove is horizontally opened around the clamping opening in the clamping seat. The adjusting plate is in a circular ring shape, and the adjusting plate is rotatably arranged in the adjusting groove. The clamping plate is provided with a plurality of groups, which are arranged in a ring array between the adjusting plate and the clamping seat. An adjusting column block is arranged above the outer end of the clamping plate, and an arc groove is arranged on the adjusting plate corresponding to the adjusting column block. The adjusting column block is movably arranged in the arc groove. An annular worm gear is fixedly arranged on the outer side of the adjusting plate, and the fourth motor is arranged in the clamping seat. A worm is connected to the output end of the fourth motor, and the worm is meshed with the annular worm gear for transmission.

8. A sample weighing device for specific surface area testing according to claim 7, characterized in that: The third screw rod passes through the inner side of the clamping seat, and the clamping seat moves up and down along the vertical rod.

9. A sample weighing device for specific surface area testing according to claim 7, characterized in that: The glass funnel is clamped in a clamping plate, and a flexible anti-skid rubber is arranged on the inner side of the clamping plate and at the contact end of the glass funnel.

10. A sample weighing device for specific surface area testing according to claim 7, characterized in that: An inverted truncated cone rubber seat is arranged around the clamping opening below the clamping seat, wherein the minimum outer diameter of the truncated cone rubber seat is smaller than the opening inner diameter of the U-shaped sample tube, and the maximum outer diameter is larger than the opening inner diameter of the U-shaped sample tube.

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