A negative pressure delivery system for CNT powder

Abstract

The application discloses a negative pressure conveying system suitable for CNT powder and relates to the technical field of CNT powder conveying, and comprises an unpacking machine and a negative pressure Roots blower; the lower part of the unpacking machine is connected with a conveying pipeline, one end of the conveying pipeline is connected with a first branch pipe, the first branch pipe is connected with a first filter through a valve, the upper part of the middle part of the conveying pipeline is provided with a second branch pipe, and the top of the second branch pipe is connected with a second filter through a valve. The negative pressure conveying system suitable for CNT powder is provided with the negative pressure Roots blower, so that the inside of the conveying pipeline can form negative pressure; when the valve on the first branch pipe is opened, external air can enter the conveying pipeline through the first branch pipe under the filtration of the first filter, and the CNT powder discharged from the unpacking machine can flow, and the airflow and the CNT powder can be automatically separated through a cyclone separator, so that the automatic negative pressure conveying system can not only reduce manual input and improve the production automation degree.

Description

Technical Field

[0001] This invention relates to the field of CNT powder conveying technology, specifically a negative pressure conveying system suitable for CNT powder. Background Technology

[0002] CNT powder, or carbon nanotube powder, is a powder form of carbon nanotubes. It consists of single or multiple layers of graphene sheets rolled into nanoscale tubular structures with diameters of only a few to tens of nanometers. It has an ultra-high specific surface area, strength far exceeding that of steel, and excellent electrical and thermal conductivity. It is a highly representative nanomaterial. In practical applications, it is often used as a reinforcing phase to improve the properties of composite materials such as plastics and rubber. It is also widely used in the fabrication of energy storage devices such as electronic device electrodes, batteries, and supercapacitors.

[0003] Currently, CNT powder is typically fed and transferred manually, which has significant drawbacks. Not only is the manual labor intensity high and the degree of automation low, resulting in low operating efficiency and insufficient material supply continuity, but the need for continuous manpower also leads to high operating costs. In addition, there are problems with poor traceability and incomplete records, making it difficult to meet the high efficiency and standardization requirements of large-scale production. Summary of the Invention

[0004] The purpose of this invention is to provide a negative pressure conveying system suitable for CNT powder, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a negative pressure conveying system suitable for CNT powder, comprising an unpacking machine and a negative pressure Roots blower. The lower part of the unpacking machine is connected to a conveying pipe, and one end of the conveying pipe is connected to a first branch pipe, which is connected to a first filter via a valve. A second branch pipe is installed above the middle part of the conveying pipe, and the top of the second branch pipe is connected to a second filter via a valve. A cyclone separator is fixed at the other end of the conveying pipe, and an exhaust pipe is connected to the upper outer side of the cyclone separator via a valve. A dust collector is installed at one end of the exhaust pipe. The negative pressure Roots blower is connected to one side of the dust collector via a pipe. A discharge valve is installed at the bottom of the cyclone separator, and a rotary feeder is fixed at the bottom of the discharge valve.

[0006] Furthermore, a docking assembly is fixed to the bottom of the rotary feeder, and the docking assembly includes a fixing pipe, a fixing ring, a cylinder and a sealing ring. The bottom of the rotary feeder is fixed with a fixing pipe, and a fixing ring is placed on the outside of the fixing pipe. A cylinder is provided at the bottom of the fixing ring, and a sealing ring is fixed to the output end of the cylinder.

[0007] Furthermore, the docking assembly also includes a movable tube and a first solenoid valve. The movable tube is disposed inside the sealing ring and is slidably connected to the fixed tube. The first solenoid valve is provided at one top end of the sealing ring.

[0008] Furthermore, the docking assembly also includes a second solenoid valve and a filter cover. The second solenoid valve is fixed to the other end of the top of the sealing ring, and the filter cover is connected to the top of the second solenoid valve.

[0009] Furthermore, the bottom of the sealing ring abuts against the transfer container, and the bottom of the transfer container is provided with a support.

[0010] Furthermore, a positioning component is installed inside the bracket, and the positioning component includes a motor and a forward and reverse threaded screw. The motor is installed on one side of the bracket, and the output end of the motor is connected to the forward and reverse threaded screw.

[0011] Furthermore, the positioning assembly also includes a slide and a positioning plate. The two ends of the positive and negative threaded screw are threaded to the slide, and the top of the slide is fixed with a positioning plate. One side of the positioning plate has a V-shaped structure.

[0012] Furthermore, the positive and negative threaded screws are rotatably connected to the support, and the support is slidably connected to the slide.

[0013] This invention provides a negative pressure conveying system suitable for CNT powder, which has the following advantages: 1. This invention, through the installation of a negative pressure Roots blower, creates negative pressure inside the conveying pipeline. When the valve on the first branch pipe is opened, external air, filtered by the first filter, enters the conveying pipeline through the first branch pipe, carrying the CNT powder discharged from the unpacking machine. The airflow and CNT powder are then automatically separated by a cyclone separator. Therefore, the use of an automated negative pressure conveying system not only reduces manual labor and increases the degree of production automation, but also lowers operating costs to enhance the market competitiveness of enterprise products. It also improves production line efficiency and makes the production cycle more stable. In addition, automated control allows for batch recording of materials, providing convenience for production management and quality traceability. 2. By setting up the docking component, when the transfer container is located below the rotary feeder, the cylinder will press the sealing ring against the top of the inlet of the transfer container under the limit of the fixed ring. The rubber material on the bottom of the sealing ring can improve the sealing performance during docking, preventing CNT powder leakage. After loading, the first and second solenoid valves can be opened. At this time, the first solenoid valve is connected to the external negative pressure fan through the pipe and filter, so it can suck up the transfer container. At the same time, the external air will enter the transfer container after being filtered by the filter cover, so that the air in the upper part of the transfer container can flow slowly and directionally, sucking up the dust particles dispersed in the air. Thus, when the docking component is separated from the transfer container, it is prevented that the floating dust particles will be directly dispersed and pollute the surrounding air, which is more environmentally friendly. 3. By setting up a positioning component, after the transfer container is placed on the support, the motor can be started, which drives the slide to move in the center through the positive and negative thread screws. This allows the positioning plate to correct and position the transfer container, making the axis of the transfer container coincide with the axis of the sealing ring. This avoids the transfer container and the sealing ring from shifting during docking, which would affect the sealing effect and improve the convenience of docking. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a negative pressure conveying system for CNT powder according to the present invention; Figure 2 This is a schematic diagram of the transfer container structure of a negative pressure conveying system for CNT powder according to the present invention; Figure 3 This is a three-dimensional structural diagram of a docking component for a negative pressure conveying system for CNT powder according to the present invention; Figure 4 This is a schematic diagram of the positioning component structure of a negative pressure conveying system for CNT powder according to the present invention; Figure 5 This is a schematic diagram of the positive and negative thread screw structure of a negative pressure conveying system for CNT powder according to the present invention.

[0015] In the diagram: 1. Unpacking machine; 2. Conveying pipe; 3. First branch pipe; 4. First filter; 5. Second branch pipe; 6. Second filter; 7. Cyclone separator; 8. Exhaust pipe; 9. Dust collector; 10. Negative pressure Roots blower; 11. Discharge valve; 12. Rotary feeder; 13. Docking assembly; 1301. Fixed pipe; 1302. Fixed ring; 1303. Cylinder; 1304. Sealing ring; 1305. Movable pipe; 1306. First solenoid valve; 1307. Second solenoid valve; 1308. Filter cover; 14. Transfer container; 15. Support; 16. Positioning assembly; 1601. Motor; 1602. Threaded screw; 1603. Slide; 1604. Positioning plate. Detailed Implementation

[0016] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0017] like Figure 1 As shown, a negative pressure conveying system for CNT powder includes an unpacking machine 1 and a negative pressure Roots blower 10. The lower part of the unpacking machine 1 is connected to a conveying pipe 2, and one end of the conveying pipe 2 is connected to a first branch pipe 3. The first branch pipe 3 is connected to a first filter 4 via a valve. The first filter 4 can remove dust from the air entering the first branch pipe 3. A second branch pipe 5 is installed above the middle of the conveying pipe 2, and the top of the second branch pipe 5 is connected to a second filter 6 via a valve. The second filter 6 can remove dust from the air entering the second branch pipe 5. The other end of the conveying pipe 2 is fixed with a cyclone separator 7, and the upper outer side of the cyclone separator 7 is connected to an exhaust pipe 8 through a valve. CNT powder will be deposited at the bottom of the cyclone separator 7, while the airflow will be discharged through the exhaust pipe 8. A dust collector 9 is installed at one end of the exhaust pipe 8. The dust collector 9 can filter fine dust. The negative pressure Roots blower 10 is connected to one side of the dust collector 9 through a pipe. A discharge valve 11 is installed at the bottom of the cyclone separator 7, and a rotary feeder 12 is fixed at the bottom of the discharge valve 11. The discharge amount is controlled by the rotary feeder 12.

[0018] like Figures 2 to 4As shown, a docking assembly 13 is fixed to the bottom of the rotary feeder 12. The docking assembly 13 includes a fixing tube 1301, a fixing ring 1302, a cylinder 1303, and a sealing ring 1304. The fixing tube 1301 is fixed to the bottom of the rotary feeder 12, and the fixing ring 1302 is placed on the outer side of the fixing tube 1301. The cylinder 1303 is located at the bottom of the fixing ring 1302, and the sealing ring 1304 is fixed to the output end of the cylinder 1303. The cylinder 1303 will press the sealing ring 1304 against the top of the container inlet under the limit of the fixing ring 1302. The rubber material on the bottom surface of the sealing ring 1304 can improve the sealing performance during docking and prevent CNT powder leakage. The docking assembly 13 also includes a movable tube 1305 and a first solenoid valve 1306. The movable tube 1305 is housed inside the sealing ring 1304 and is slidably connected to the fixed tube 1301. The first solenoid valve 1306 is provided at one top end of the sealing ring 1304. The first solenoid valve 1306 is connected to an external negative pressure fan through a pipe and a filter. The docking assembly 13 also includes a second solenoid valve 1307 and a filter cover 1308. The second solenoid valve 1307 is fixed at the other top end of the sealing ring 1304, and the filter cover 1308 is connected to the top of the second solenoid valve 1307. The bottom of the sealing ring 1304 abuts against the transfer container 14, and the transfer... The bottom of the transport container 14 is equipped with a support 15. After loading, the first solenoid valve 1306 and the second solenoid valve 1307 are opened, and the external negative pressure fan can draw air into the transport container 14. At the same time, external air enters the transport container 14 after being filtered by the filter cover 1308, allowing the air in the upper part of the transport container 14 to flow slowly and directionally, removing dust particles dispersed in the air and preventing floating dust particles from being directly dispersed during separation and polluting the surrounding air, thus making it more environmentally friendly. The support 15 is equipped with a positioning component 16, which includes a motor 1601 and a forward and reverse threaded screw 1602. The motor 1601 is installed on one side of the support 15. The output end of 1601 is connected to a screw 1602 with a reverse thread. The positioning assembly 16 also includes a slide 1603 and a positioning plate 1604. The two ends of the screw 1602 are threaded to the slide 1603, and the top of the slide 1603 is fixed with the positioning plate 1604. One side of the positioning plate 1604 has a V-shaped structure. The motor 1601 drives the slide 1603 to move in the center through the screw 1602, so that the positioning plate 1604 can correct and position the transfer container 14. The screw 1602 is rotatably connected to the support 15, and the support 15 is slidably connected to the slide 1603. The support 15 will guide and limit the slide 1603 to prevent it from rotating.

[0019] In summary, this negative pressure conveying system for CNT powder operates as follows: First, the transfer container 14 is placed on the support 15. Then, the motor 1601 is started, causing it to move the slide 1603 in the center via the positive and negative thread screws 1602. This allows the positioning plate 1604 to correct and position the transfer container 14, ensuring that the axis of the transfer container 14 coincides with the axis of the sealing ring 1304. This prevents misalignment between the transfer container 14 and the sealing ring 1304 during docking, which would affect the sealing effect. Second, the cylinder 1303, under the limit of the fixed ring 1302, presses the sealing ring 1304 tightly against the top of the inlet of the transfer container 14. The rubber material on the bottom of the sealing ring 1304 improves the sealing performance during docking, preventing CNT powder leakage. Then, the negative pressure Roots blower 10 operates, drawing air from the conveying pipe 2 through the dust collector 9, exhaust pipe 8, and cyclone separator 7. At this time, after opening the valve on the first branch pipe 3, the external... The air, filtered by the first filter 4, enters the conveying pipe 2 through the first branch pipe 3, carrying the CNT powder discharged by the unpacking machine 1. The airflow and CNT powder are then automatically separated by the cyclone separator 7. The CNT powder will be deposited at the bottom of the cyclone separator 7, while the airflow will be discharged through the exhaust pipe 8. Finally, after the rotary feeder 12 delivers the specified powder, the discharge valve 11 is closed, and the first solenoid valve 1306 and the second solenoid valve 1307 are opened. At this time, the first solenoid valve 1306 is connected to the external negative pressure fan through the pipe and filter, so it can suck up the transfer container 14. At the same time, the external air will be filtered by the filter cover 1308 and enter the transfer container 14, so that the air in the upper part of the transfer container 14 can flow slowly and directionally, sucking up the dust particles dispersed in the air. Thus, when the docking component 13 is separated from the transfer container 14, the floating dust particles are prevented from being directly dispersed and polluting the surrounding air.

[0020] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A negative pressure conveying system for CNT powder, comprising an unpacking machine (1) and a negative pressure Roots blower (10), characterized in that, The lower part of the unpacking machine (1) is connected to a conveying pipe (2), and one end of the conveying pipe (2) is connected to a first branch pipe (3), and the first branch pipe (3) is connected to a first filter (4) through a valve. A second branch pipe (5) is installed above the middle part of the conveying pipe (2), and the top of the second branch pipe (5) is connected to a second filter (6) through a valve. A cyclone separator (7) is fixed at the other end of the conveying pipe (2), and an exhaust pipe (8) is connected to the upper outer side of the cyclone separator (7) through a valve. A dust collector (9) is installed at one end of the exhaust pipe (8). The negative pressure Roots blower (10) is connected to one side of the dust collector (9) through a pipe. A discharge valve (11) is installed at the bottom of the cyclone separator (7), and a rotary feeder (12) is fixed at the bottom of the discharge valve (11).

2. The negative pressure conveying system for CNT powder according to claim 1, characterized in that, The bottom of the rotary feeder (12) is fixed with a docking assembly (13), and the docking assembly (13) includes a fixing tube (1301), a fixing ring (1302), a cylinder (1303) and a sealing ring (1304). The bottom of the rotary feeder (12) is fixed with a fixing tube (1301), and a fixing ring (1302) is arranged on the outside of the fixing tube (1301). A cylinder (1303) is arranged at the bottom of the fixing ring (1302), and a sealing ring (1304) is fixed at the output end of the cylinder (1303).

3. The negative pressure conveying system for CNT powder according to claim 2, characterized in that, The docking assembly (13) further includes a movable tube (1305) and a first solenoid valve (1306). The movable tube (1305) is disposed inside the sealing ring (1304), and the movable tube (1305) is slidably connected to the fixed tube (1301). The first solenoid valve (1306) is provided at one end of the top of the sealing ring (1304).

4. A negative pressure conveying system for CNT powder according to claim 3, characterized in that, The docking assembly (13) also includes a second solenoid valve (1307) and a filter cover (1308). The second solenoid valve (1307) is fixed at the other end of the top of the sealing ring (1304), and the filter cover (1308) is connected to the top of the second solenoid valve (1307).

5. A negative pressure conveying system for CNT powder according to claim 4, characterized in that, The bottom of the sealing ring (1304) abuts against the transfer container (14), and the bottom of the transfer container (14) is provided with a support (15).

6. A negative pressure conveying system for CNT powder according to claim 5, characterized in that, The bracket (15) is equipped with a positioning component (16), which includes a motor (1601) and a threaded screw (1602). The motor (1601) is located on one side of the bracket (15), and the output end of the motor (1601) is connected to the threaded screw (1602).

7. A negative pressure conveying system for CNT powder according to claim 6, characterized in that, The positioning component (16) further includes a slide (1603) and a positioning plate (1604). The two ends of the positive and negative threaded screw (1602) are threaded to the slide (1603), and the top of the slide (1603) is fixed with the positioning plate (1604). One side of the positioning plate (1604) has a V-shaped structure.

8. A negative pressure conveying system for CNT powder according to claim 7, characterized in that, The positive and negative threaded screw (1602) is rotatably connected to the support (15), and the support (15) is slidably connected to the slide (1603).

9. A negative pressure conveying system for CNT powder according to claim 8, characterized in that, The operation method is as follows: Place the transfer container (14) on the support (15), and then start the motor (1601) so that it drives the slide (1603) to move in the center through the positive and negative thread screws (1602), so that the positioning plate (1604) corrects and positions the transfer container (14), so that the axis of the transfer container (14) coincides with the axis of the sealing ring (1304), and avoids the transfer container (14) and the sealing ring (1304) from shifting during docking, which would affect the sealing effect; secondly, the cylinder (1 303) Under the limit of the fixed ring (1302), the sealing ring (1304) will be pressed against the top of the inlet of the transfer container (14). The rubber material on the bottom of the sealing ring (1304) will improve the sealing performance during docking and prevent CNT powder from leaking out. Then, the negative pressure Roots blower (10) will work and can draw air from the conveying pipe (2) through the dust collector (9), the exhaust pipe (8) and the cyclone separator (7). After opening the valve on the first branch pipe (3), the outside air will pass through the first branch pipe. The filtered material (4) enters the conveying pipe (2) through the first branch pipe (3), carrying the CNT powder discharged from the unpacking machine (1). The airflow is then automatically separated from the CNT powder by the cyclone separator (7). The CNT powder settles at the bottom of the cyclone separator (7), while the airflow is discharged through the exhaust pipe (8). Finally, after the rotary feeder (12) delivers the specified powder, the discharge valve (11) is closed, and the first solenoid valve (1306) and the second solenoid valve (1306) are opened. 07), at this time, the first solenoid valve (1306) is connected to the external negative pressure fan through the pipe and filter to draw in the transfer container (14). At the same time, the external air will enter the transfer container (14) after being filtered by the filter cover (1308), so that the air in the upper part of the transfer container (14) can flow slowly in a direction and remove the dust particles dispersed in the air. Thus, when the docking component (13) is separated from the transfer container (14), the floating dust particles are prevented from being directly dispersed and polluting the surrounding air.

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