A multi-functional sampling device for single-walled carbon nanotube materials

Abstract

The application discloses a kind of single-wall carbon nanotube material multifunctional sampling device, it is related to detection auxiliary device technical field, including: sampling port, is set to the top of conveying pipeline;Sampling cylinder is fixedly connected to the sampling port, wherein the piston is slidably arranged in the sampling cylinder;Rotary rod is rotatably connected in the sampling cylinder, and the middle part is provided with guide thread, the guide thread is threadedly connected with the piston, the upper end of the rotary rod extends to the outside of the sampling cylinder, while the lower end penetrates the sampling port and is connected to the sealing plug located below the sampling port;Discharge chute is arranged on the side wall of the sampling port;Support is fixed to the outside of the discharge chute;Sample tube is detachably mounted on the support, and one end thereof is inserted into the discharge chute;The application realizes accurate quantitative sampling, efficient screening and extraction of single-wall carbon nanotube material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection auxiliary devices, and particularly relates to a single-walled carbon nanotube material multifunctional sampling device. BACKGROUND

[0002] Single-walled carbon nanotubes (SWCNTs) have unique electrical, mechanical, and thermal properties, and have shown great application potential in electronic devices, composite materials, energy storage and conversion, and other fields. In the industrial production process, single-walled carbon nanotube materials are usually transported through specific conveying pipelines to ensure the continuity and efficiency of the production process.

[0003] Sampling from the conveying pipeline is a key link in the quality control and performance evaluation of single-walled carbon nanotube materials. Through sampling, the purity, particle size distribution, structural integrity, and other key indicators of the material can be monitored in real time, providing important basis for subsequent scientific research experiments, process optimization, and product quality control. In addition, sampling can also help to timely discover abnormal situations in the production process, such as impurity mixing, particle size deviation, etc., so as to take corresponding measures for adjustment, and ensure the stability and consistency of the product.

[0004] At present, the common method for sampling from the single-walled carbon nanotube material conveying pipeline is to insert the sampling device into the conveying pipeline from the sampling port. However, during the opening process of the sampling port, dust, impurities and other pollutants in the external environment are easy to enter the conveying pipeline, causing pollution to the single-walled carbon nanotube material and affecting the purity and performance of the material.

[0005] The insertion of the sampling device will occupy part of the space of the conveying pipeline, thereby affecting the normal flow of the material, and even possibly causing pipeline blockage or material transportation interruption, which will adversely affect the continuity and stability of the production process. The existing sampling device often lacks precise quantitative control mechanism, which makes it difficult to accurately control the sampling amount, and is easy to cause waste or insufficient of the material, affecting the accuracy of subsequent experiments and evaluation. The particle size distribution range of single-walled carbon nanotube material is wide, and the existing sampling device usually cannot select and extract materials of specific particle size according to needs, which limits its application range in scientific research and production.

[0006] In summary, the existing technology has many deficiencies in sampling from the single-walled carbon nanotube material conveying pipeline, and there is an urgent need for a multifunctional sampling device that can overcome these defects, realize precise quantitative sampling, avoid material pollution and conveying interference, and extract samples of specific size. It is necessary to provide a single-walled carbon nanotube material multifunctional sampling device to solve the problems raised in the background art. SUMMARY

[0007] In order to achieve the above object, the present application provides the following technical scheme: a single-walled carbon nanotube material multifunctional sampling device, comprising:

[0008] A sampling port is arranged above the conveying pipeline.

[0009] A sampling cylinder is fixedly connected to the sampling port, wherein a piston is slidably arranged inside the sampling cylinder.

[0010] A rotating rod is rotatably connected in the sampling cylinder, a guide screw is arranged in the middle part of the rotating rod, the guide screw is threadedly connected with the piston, the upper end of the rotating rod extends to the outside of the sampling cylinder, and the lower end penetrates the sampling port and is connected to a sealing plug arranged below the sampling port.

[0011] A discharge chute is arranged on the side wall of the sampling port.

[0012] A support is fixed outside the discharge chute.

[0013] A sample tube is detachably mounted on the support, and one end of the sample tube is inserted into the discharge chute.

[0014] A driving motor is fixed on the top of the sampling cylinder, a sleeve is connected to the output end of the driving motor, and the sleeve is slidably and rotationally connected with the rotating rod.

[0015] A nut ring is fixed above the sampling cylinder, a single-thread is further arranged on the upper part of the rotating rod, and the single-thread is threadedly connected with the nut ring.

[0016] The lower end of the rotating rod is rotationally connected with the sealing plug.

[0017] Further, a plurality of grooves are arranged on the inner wall of the sampling cylinder, and the piston is embedded in the grooves.

[0018] Further, a screening sleeve is rotationally arranged on the inner wall of the sampling port at the position where the discharge chute is arranged, and a plurality of through holes which are symmetrically arranged in pairs are arranged on the side wall of the screening sleeve.

[0019] Further, a nanoseparation membrane with different pore diameters is mounted in the through hole.

[0020] Further, a bevel gear is rotationally arranged in the sampling port, the bevel gear is meshed with a bevel gear ring fixed on the outer wall of the screening sleeve, and the rotating shaft of the bevel gear penetrates to the outside of the sampling port and is connected to an adjusting motor.

[0021] Further, a suction port is fixed on the end of the support away from the discharge chute, and the suction port is connected to a vacuum pump.

[0022] The sample tube has openings at both ends, and the opening at the end away from the discharge chute is inserted into the suction port.

[0023] Further, the air guide groove is arranged on the side wall away from the discharge groove of the sampling port, and the discharge groove and the air guide groove are both arranged to be inclined and tangent to the inner wall of the sampling port.

[0024] Further, the air guide groove and the suction port are both provided with a one-way air permeable film.

[0025] Further, the rotating rod is fixed with a plurality of stirring blades at a position in the sampling port.

[0026] Compared with the prior art, the beneficial effects of the present application are:

[0027] By rotating the rotating rod, the sliding distance of the piston in the sampling cylinder can be accurately controlled, so that the quantitative suction and discharge of single-walled carbon nanotube materials are realized. Not only the accuracy of sampling is improved, but also the waste of materials is avoided, and reliable data support is provided for scientific research and production.

[0028] In the sampling process of the present application, the opening and closing of the sealing plug ensures the communication and isolation of the sampling port and the conveying pipeline, and the sampling by the sliding of the piston can avoid the sampling device entering the conveying pipeline, realizing the online sampling without interference and not affecting the normal conveying of materials in the conveying pipeline.

[0029] By the nanoseparation membrane in the screening sleeve, the present device can screen single-walled carbon nanotube materials of a specific size. By adjusting the motor to drive the screening sleeve to rotate, different through holes can be conveniently switched, the extraction of materials of different particle sizes is realized, and diversified experimental requirements are met.

[0030] In the present application, the vacuum pump generates negative pressure in the sample tube, helping the materials to quickly penetrate the nanoseparation membrane into the sample tube. Since the discharge groove and the air guide groove are tangent to the inner wall of the sampling port, and the through holes are symmetrical, the two through holes can be in communication with the discharge groove and the air guide groove respectively, so that a spiral airflow is generated in the sampling port, the flowability of the materials is improved, and the clogging and clumping of single-walled carbon nanotube materials in the sampling process are effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a multifunctional sampling device for single-walled carbon nanotube materials.

[0032] Figure 2 It is a schematic diagram of the internal structure of a multifunctional sampling device for single-walled carbon nanotube materials.

[0033] Figure 3 It is a schematic diagram of the cross-sectional structure of a multifunctional sampling device for single-walled carbon nanotube materials.

[0034] Figure 4A schematic diagram of the cross-sectional structure at the sampling port in the present application;

[0035] Figure 5 A schematic diagram of the cross-sectional structure at the sampling port in the present application;

[0036] In the figure: 1, sampling port; 2, sampling cylinder; 21, piston; 22, rotating rod; 221, guide thread; 222, single thread; 23, sealing plug; 24, sleeve; 25, nut ring; 26, stirring blade; 3, discharge chute; 31, air guide chute; 4, support; 5, sample tube; 6, suction port; 7, vacuum pump; 8, drive motor; 9, screening sleeve; 91, through hole; 92, umbrella gear; 93, bevel gear; 94, adjusting motor. DETAILED DESCRIPTION

[0037] Please refer to Figures 1-5 In an embodiment of the present application, a multifunctional sampling device for single-walled carbon nanotube material includes:

[0038] The sampling port 1 is arranged above the conveying pipeline;

[0039] The sampling cylinder 2 is fixedly connected to the sampling port 1, wherein a piston 21 is slidably arranged inside the sampling cylinder 2;

[0040] The rotating rod 22 is rotatably connected inside the sampling cylinder 2, and a guide thread 221 is arranged in the middle part of the rotating rod 22, the guide thread 221 is threadedly connected to the piston 21, the upper end of the rotating rod 22 extends to the outside of the sampling cylinder 2, and the lower end penetrates the sampling port 1 and is connected to the sealing plug 23 located below the sampling port 1;

[0041] The discharge chute 3 is arranged on the side wall of the sampling port 1;

[0042] The support 4 is fixedly arranged outside the discharge chute 3;

[0043] The sample tube 5 is detachably mounted on the support 4, and one end of the sample tube 5 is inserted into the discharge chute 3.

[0044] By rotating the rotating rod 22 to make the piston 21 slide upward, when the sealing plug 23 makes the sampling port 1 in an open state, single-walled carbon nanotube material can be quantitatively sucked from the conveying pipeline into the sampling cylinder 2; and when the sealing plug 23 makes the sampling port 1 closed, by reversely operating the rotating rod 22 to make the piston 21 slide downward, the single-walled carbon nanotube material in the sampling cylinder 2 can be quantitatively discharged into the sample tube 5, thereby realizing the function of quantitative sampling, while ensuring that the normal conveying of single-walled carbon nanotube material in the conveying pipeline is not affected. The overall design of the device is compact, which is convenient for integration in the existing single-walled carbon nanotube material conveying system to realize online sampling without interference.

[0045] In the embodiment, the inner wall of the sampling cylinder 2 is provided with a plurality of grooves, and the piston 21 is embedded in the grooves. Thus, the mutual rotation of the piston 21 and the sampling cylinder 2 is limited, and the rotation of the rotating rod 22 can drive the piston 21 to slide.

[0046] In the embodiment, the top of the sampling cylinder 2 is fixed with a driving motor 8, the output end of the driving motor 8 is connected with a sleeve 24, and the sleeve 24 is slidably and rotationally connected with the rotating rod 22.

[0047] The upper part of the sampling cylinder 2 is fixed with a nut ring 25, and the upper part of the rotating rod 22 is further provided with a single-turn thread 222, which is threadedly connected with the nut ring 25.

[0048] The lower end of the rotating rod 22 is rotationally connected with the sealing plug 23.

[0049] When the rotating direction of the rotating rod 22 makes the piston 21 slide upward, the rotating rod 22 slides downward along the nut ring 25 under the action of the single-turn thread 222, until the single-turn thread 222 is below the nut ring 25, at this time, the sealing plug 23 also slides downward to open the sampling port 1, so that the single-walled carbon nanotube material in the conveying pipeline can be sucked into the sampling cylinder 2.

[0050] When the rotating direction of the rotating rod 22 makes the piston 21 slide downward, the rotating rod 22 slides upward along the nut ring 25 under the action of the single-turn thread 222, until the single-turn thread 222 is above the nut ring 25, at this time, the sealing plug 23 also slides upward to close the sampling port 1, so that the single-walled carbon nanotube material in the sampling cylinder 2 is discharged from the discharge groove 3 into the sample tube 5, avoiding the single-walled carbon nanotube material returning to the conveying pipeline.

[0051] In the embodiment, a screening sleeve 9 is rotationally arranged at the position of the inner wall of the sampling port 1 where the discharge groove 3 is located, and a plurality of through holes 91 which are symmetrically arranged in pairs are formed in the side wall of the screening sleeve 9.

[0052] When the screening sleeve 9 is rotated to align the through holes 91 with the discharge groove 3, the sampling cylinder 2 is communicated with the sample tube 5, at this time, the single-walled carbon nanotube material in the sampling cylinder 2 can be discharged into the sample tube 5, when the screening sleeve 9 is rotated to misalign the through holes 91 with the discharge groove 3, the sampling cylinder 2 and the sample tube 5 are mutually closed, so that the sampling cylinder 2 can only suck the single-walled carbon nanotube material from the conveying pipeline.

[0053] In the embodiment, different nano-separation membranes with different pore sizes are installed in the through holes 91.

[0054] That is, when different through holes 91 align with the discharge groove 3, the single-walled carbon nanotube material smaller than the pore size can pass through the through holes 91 and enter the sample tube 5, so that the sample of single-walled carbon nanotube material with a specific size can be extracted.

[0055] In the embodiment, the outer wall of the screening sleeve 9 is fixed with a set of bevel gears 92, and the sampling port 1 is rotatably provided with a bevel gear 93, the bevel gear 93 is engaged with the bevel gear 92, and the rotation shaft of the bevel gear 93 penetrates to the outside of the sampling port 1 and is connected to the adjusting motor 94.

[0056] The adjusting motor 94 can drive the screening sleeve 9 to rotate to different angles, so that the screening sleeve 9 realizes the functions of sealing the discharge groove 3 or screening the sample.

[0057] In the embodiment, the end of the support 4 away from the discharge groove 3 is fixed with a suction port 6, and the suction port 6 is connected to the vacuum pump 7.

[0058] The sample tube 5 has openings at both ends, and the opening away from the discharge groove 3 is inserted into the suction port 6.

[0059] That is, the vacuum pump 7 can generate negative pressure in the sample tube 5, so as to help the single-walled carbon nanotube material sample penetrate the nanoseparation membrane of the through hole 91 into the sample tube 5.

[0060] In the embodiment, the side wall of the sampling port 1 away from the discharge groove 3 is provided with an air guide groove 31, and the discharge groove 3 and the air guide groove 31 are both inclined and tangent to the inner wall of the sampling port 1.

[0061] In the embodiment, the air guide groove 31 and the suction port 6 are both provided with one-way air permeable membranes.

[0062] That is, when the vacuum pump 7 generates negative pressure in the sample tube 5, external air enters the sampling port 1 from the air guide groove 31. Since the discharge groove 3 and the air guide groove 31 are tangent to the inner wall of the sampling port 1, and the two through holes 91 are symmetrical, the two through holes 91 can respectively communicate with the discharge groove 3 and the air guide groove 31, thereby generating a spiral airflow in the sampling port 1, making the single-walled carbon nanotube material in the sampling port 1 move in a circular manner, avoiding the nanoseparation membrane in the through hole 91 being blocked, and also avoiding the single-walled carbon nanotube material from being bunched, thereby improving the efficiency of the single-walled carbon nanotube material passing through the nanoseparation membrane.

[0063] And since the air guide groove 31 and the suction port 6 are both provided with one-way air permeable membranes, the single-walled carbon nanotube material cannot pass through the air guide groove 31 and the suction port 6, thereby avoiding the single-walled carbon nanotube material from leaking to the outside.

[0064] In the embodiment, the rotating rod 22 is circumferentially fixed with a plurality of stirring blades 26 in the sampling port 1.

[0065] When the single-walled carbon nanotube material passes through the sampling port 1, it will be stirred by the stirring blades 26, thereby avoiding being bunched due to compression by the piston 21.

[0066] In implementation:

[0067] The sleeve 24 and the rotating rod 22 are driven to rotate by the driving motor 8, so that the piston 21 slides in the sampling cylinder 2;

[0068] The rotating rod 22 slides downward under the action of the single-turn thread 222 and the nut ring 25, until the single-turn thread 222 is below the nut ring 25, at this time, the sealing plug 23 moves downward with the rotating rod 22, opens the sampling port 1, and allows the single-walled carbon nanotube material in the conveying pipeline to enter the sampling cylinder 2;

[0069] Continue to rotate the rotating rod 22 clockwise, the piston 21 slides upward under the drive of the guide thread 221, and the single-walled carbon nanotube material is sucked into the sampling cylinder 2, and the sampling amount can be accurately controlled by determining the number of turns of the rotating rod 22 or the position of the piston 21;

[0070] The rotating rod 22 slides upward under the action of the single-turn thread 222 and the nut ring 25, until the single-turn thread 222 is above the nut ring 25, at this time, the sealing plug 23 moves upward with the rotating rod 22, closes the sampling port 1, and prevents the material in the sampling cylinder 2 from flowing back to the conveying pipeline;

[0071] Start the adjusting motor 94 to drive the screening sleeve 9 to rotate to the position where the through hole 91 is aligned with the discharge chute 3, continue to rotate the rotating rod 22 counterclockwise, and the piston 21 slides downward, so that the material in the sampling cylinder 2 is discharged into the sample tube 5 through the discharge chute 3 and the through hole 91 of the screening sleeve 9, and the nanometer separation film screens out single-walled carbon nanotube materials of a specific size into the sample tube 5;

[0072] The vacuum pump 7 is started during the downward sliding of the piston 21, a negative pressure is generated in the sample tube 5, which helps the material to penetrate the nanometer separation film and enter the sample tube 5, at the same time, external air enters the sampling port 1 through the air guide groove 31, generating a spiral air flow to prevent the material from blocking the through hole 91 and agglomerating, and the air guide groove 31 and the one-way air permeable film in the suction port 6 ensure that the material does not leak from these two positions.

[0073] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-functional sampling device for single-walled carbon nanotube material, characterized by, The utility model provides a kind of single-walled carbon nanotube sampling device, including: Sampling port (1) is arranged on the top of conveying pipeline; Sampling cylinder (2) is fixedly connected to the sampling port (1), wherein the inside of the sampling cylinder (2) is slidably provided with a piston (21); Rotary rod (22) is rotatably connected in the sampling cylinder (2), and the middle part is provided with a guide screw (221), the guide screw (221) is threadedly connected with the piston (21), and the upper end of the rotary rod (22) extends to the outside of the sampling cylinder (2), while the lower end penetrates the sampling port (1) and is connected to the sealing plug (23) below the sampling port (1); Discharge chute (3) is arranged on the side wall of the sampling port (1); Support (4) is fixed to the outside of the discharge chute (3); Sample tube (5) is detachably mounted on the support (4), and one end of the sample tube (5) is inserted into the discharge chute (3); The top of the sampling cylinder (2) is fixed with a driving motor (8), the output end of the driving motor (8) is connected with a sleeve (24), and the sleeve (24) is slidably and rotationally connected with the rotary rod (22); The upper part of the rotary rod (22) is further provided with a single-turn thread (222), and the single-turn thread (222) is threadedly connected with the nut ring (25); The lower end of the rotary rod (22) is rotationally connected with the sealing plug (23); The inner wall of the sampling port (1) is rotatably provided with a screening sleeve (9) at the position where the discharge chute (3) is located, and a plurality of two-by-two symmetrical through holes (91) are formed in the side wall of the screening sleeve (9); The side wall of the sampling port (1) away from the discharge chute (3) is provided with an air guide groove (31), and the discharge chute (3) and the air guide groove (31) are both inclined and tangent to the inner wall of the sampling port (1); The outer wall of the screening sleeve (9) is fixed with a ring of bevel gear (92), the sampling port (1) is rotatably provided with a bevel gear (93), the bevel gear (93) is engaged with the bevel gear (92), and the rotation shaft of the bevel gear (93) penetrates to the outside of the sampling port (1) and is connected to the adjusting motor (94); When the rotary direction of the rotary rod (22) makes the piston (21) slide upward, the rotary rod (22) slides downward along the nut ring (25) under the action of the single-turn thread (222), until the single-turn thread (222) is below the nut ring (25), at this time, the sealing plug (23) also slides downward to open the sampling port (1), so that the single-walled carbon nanotube material in the conveying pipeline can be sucked into the sampling cylinder (2); When the rotary direction of the rotary rod (22) makes the piston (21) slide downward, the rotary rod (22) slides upward along the nut ring (25) under the action of the single-turn thread (222), until the single-turn thread (222) is above the nut ring (25), at this time, the sealing plug (23) also slides upward to close the sampling port (1), so that the single-walled carbon nanotube material in the sampling cylinder (2) is discharged from the discharge chute (3) to the sample tube (5), avoiding the single-walled carbon nanotube material returning to the conveying pipeline.

2. The multi-functional sampling device of single-walled carbon nanotube material according to claim 1, wherein A plurality of grooves are formed in the inner wall of the sampling cylinder (2), and the piston (21) is embedded in the grooves.

3. The multi-functional sampling device of single-walled carbon nanotube material according to claim 1, wherein, The through hole (91) is provided with nanometer separation membranes with different pore sizes.

4. The multi-functional sampling device of single-walled carbon nanotube material according to claim 1, wherein, The end of the support (4) away from the discharge chute (3) is fixed with a suction port (6) connected to a vacuum pump (7). The sample tube (5) has openings at both ends, and the opening away from the discharge chute (3) is inserted into the suction port (6).

5. The multi-functional sampling device of single-walled carbon nanotube material according to claim 4, wherein, The air guide groove (31) and the suction port (6) are both provided with one-way air permeable membranes.

6. The multi-functional sampling device of single-walled carbon nanotube material of claim 1, wherein, The rotating shaft (22) is circumferentially fixed with a plurality of stirring blades (26) at the position in the sampling port (1).

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