Discharging mechanism for continuously preparing single-walled carbon nanotubes

Abstract

The invention discloses a discharging mechanism for continuously preparing single-walled carbon nanotubes, the discharging mechanism is arranged at a discharging port of a single-walled carbon nanotube preparation device, the discharging mechanism comprises a discharging cylinder and a shoveling and scraping device arranged on one side wall of the discharging cylinder, the shoveling and scraping device is movably and hermetically connected with the cylinder wall of the discharging cylinder, the shoveling and scraping device comprises a control end and an operation end, and the control end is connected with the operation end. The control end is located outside the discharging barrel, the operation end is located inside the discharging barrel and movably enters and exits a discharging port of the single-walled carbon nanotube preparation device, and the discharging barrel is connected with the discharging port of the single-walled carbon nanotube preparation device in a sealed mode. According to the discharging mechanism for continuously preparing the single-walled carbon nanotubes, the continuous preparation process of the single-walled carbon nanotubes cannot be affected during discharging, and it can be guaranteed that the preparation efficiency of the single-walled carbon nanotubes and the product quality are high.

Description

Technical Field

[0001] This invention relates to the field of nanomaterial preparation equipment technology, and in particular to a discharge mechanism for the continuous preparation of single-walled carbon nanotubes. Background Technology

[0002] Single-walled carbon nanotubes (SWCNTs) possess excellent electronic, mechanical, and electrical properties, especially exhibiting extremely high electron and hole mobility. Therefore, SWCNTs are identified as one of the most promising new device materials for future applications. However, SWCNTs share the common nanomaterial property of "easily agglomerating." During the preparation of SWCNTs, as the product accumulates, a network structure easily forms at the material outlet, causing blockage. Airflow alone is insufficient to clear this blockage. Current practices involve stopping production for a period, opening the outlet for manual cleaning, and then proceeding to the next step. However, this approach has the following drawbacks: 1. It prevents continuous production, affecting efficiency; 2. The cleaning process requires opening the production equipment, which can introduce air and cause temperature fluctuations in the production environment, negatively impacting subsequent production.

[0003] Therefore, how to ensure that the discharge of single-walled carbon nanotubes does not affect the continuous production process is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a discharge mechanism for the continuous preparation of single-walled carbon nanotubes. This mechanism does not affect the continuous preparation process of single-walled carbon nanotubes during discharge, ensuring both high preparation efficiency and high product quality.

[0005] The technical solution provided by this invention is as follows: A discharge mechanism for continuous preparation of single-walled carbon nanotubes is provided at the discharge port of a single-walled carbon nanotube preparation device, comprising a discharge cylinder and a scraper disposed on one side wall of the discharge cylinder. The scraper is movable and sealed to the wall of the discharge cylinder. The scraper includes a control end and an operating end. The control end is located outside the discharge cylinder, and the operating end is located inside the discharge cylinder and moves in and out of the discharge port of the single-walled carbon nanotube preparation device. The discharge cylinder is sealed to the discharge port of the single-walled carbon nanotube preparation device.

[0006] Preferably, the operating end of the scraper has a T-shaped or L-shaped structure. The horizontal portion of the T-shaped or L-shaped structure is located at the end of the operating terminal, and the horizontal portion of the T-shaped or L-shaped structure is connected to the control terminal.

[0007] Preferably, the travel of the operating end of the scraper is not less than the total length of the product inside the discharge port.

[0008] Preferably, the control terminal of the scraper is equipped with a drive unit. The drive unit can be driven in one of the following modes: manual, electric, pneumatic, or hydraulic.

[0009] Preferably, the control end of the scraper is connected to a rotating component to ensure that the operating end of the scraper can rotate 360°.

[0010] Preferably, the connection between the scraper and the discharge cylinder is sealed by two opposing R-type sealing rings or existing axial sealing rings.

[0011] Preferably, the discharge cylinder is provided with a sealed and visible observation port, which is located on the opposite side of the discharge port.

[0012] Preferably, the discharge cylinder includes an upper air outlet and a lower material storage end. The direction of the air outlet and the material storage end is perpendicular to the direction of the scraper.

[0013] Preferably, the air outlet of the discharge cylinder is connected to the material storage end, the air outlet is provided with a hot water spray assembly, and the material storage end is provided with a water / material outlet.

[0014] Preferably, the outer surface of the operating end of the scraper and / or the inner wall of the discharge cylinder are respectively provided with a hydrophobic coating.

[0015] The present invention has the following advantages over the prior art: The discharge mechanism of this invention for the continuous production of single-walled carbon nanotubes utilizes a scraper to continuously clear the discharge port during the production process, preventing material blockage. The scraper's operation is independent of the single-walled carbon nanotube production process, ensuring no disruption. Product cleaning does not require production interruption. The scraper can be used intermittently, such as automatically cleaning the discharge port at intervals, or manually adjusting the cleaning frequency as needed. The scraper is sealed to the discharge cylinder, preventing air from entering the discharge port during scraper operation (reciprocating scraper movement for product cleaning) and ensuring normal production of single-walled carbon nanotubes. Simultaneously, the scraper scrapes the product from the discharge port into the discharge cylinder, and any product adhering to the scraper can be removed by hot water spray, preventing product accumulation and ensuring its proper function. When not in use, the scraper can be placed with its operating end close to the inner wall of the discharge cylinder without affecting the normal discharge process. This invention effectively solves the problem of discharge port blockage in the production process of single-walled carbon nanotubes using a simple scraper, with low production costs, making it suitable for widespread application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the discharge mechanism for the continuous preparation of single-walled carbon nanotubes in an embodiment of the present invention.

[0018] Figure label: 1. Discharge port; 2. Discharge cylinder; 3. Scraper; 4. Hot water spray assembly; 5. Multi-tube array airflow condenser. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] like Figure 1As shown, this embodiment of the invention provides a discharge mechanism for the continuous preparation of single-walled carbon nanotubes. The mechanism is located at the discharge port 1 of the single-walled carbon nanotube preparation device and includes a discharge cylinder 2 and a scraper 3 mounted on one side wall of the discharge cylinder 2. The scraper 3 is movably and sealingly connected to the cylinder wall of the discharge cylinder 2. The presence of the scraper 3 does not affect the atmosphere within the single-walled carbon nanotube preparation device. The scraper 3 includes a control end and an operating end. The control end is located outside the discharge cylinder 2, facilitating control of the operating end for scraping operations. The operating end is located inside the discharge cylinder 2 and moves in and out of the discharge port 1 of the single-walled carbon nanotube preparation device. By the back-and-forth pulling action of the control end, the operating end moves in and out of the discharge port 1 of the single-walled carbon nanotube preparation device, so as to scrape the product in the discharge port 1 out of the discharge port 1 and let it fall into the discharge cylinder. The discharge cylinder 2 is sealed to the discharge port 1 of the single-walled carbon nanotube preparation device. The discharge cylinder 2 and the discharge port 1 of the single-walled carbon nanotube preparation device can be connected by a connecting flange, and a sealing ring is provided at the connecting flange.

[0021] In this embodiment, the operating end of the scraper 3 has a T-shaped or L-shaped structure. The horizontal portion of the T-shaped or L-shaped structure is located at the end of the operating end and is connected to the control end. The outer dimension of the horizontal portion of the T-shaped or L-shaped structure is slightly smaller than the inner diameter of the discharge port 1. This maximizes scraping efficiency and ensures that the scraper does not interfere with the normal air output at the discharge port 1 during operation. The horizontal portion of the T-shaped or L-shaped structure can be a straight line, a cross shape, or other existing scraping structures. The end face of the operating end of the scraper 3 can also be made into an inclined surface structure as needed to facilitate scraping.

[0022] In this embodiment, the travel of the operating end of the scraper 3 is not less than the total length of the product location inside the discharge port 1. The scraper 3 can go deep into the discharge port 1, and its operating range can cover the area where the product is located.

[0023] In this embodiment, the control end of the scraper 3 is equipped with a drive unit. The drive unit is mainly used to drive the operating end of the scraper 3 to perform scraping operations. The drive mode of the drive unit is one of manual, electric, pneumatic, and hydraulic transmission, which can be reasonably selected according to actual needs.

[0024] In this embodiment, the control end of the scraper 3 is connected to a rotating component to ensure that the operating end of the scraper 3 can rotate 360°, which facilitates the scraper 3 in adjusting the scraping position.

[0025] In this embodiment, the connection between the scraper 3 and the discharge cylinder 2 is sealed by two opposing R-type sealing rings. The R-type sealing rings used are common existing sealing ring structures. The two opposing R-type sealing rings can ensure that the sealing condition of the connection between the scraper 3 and the discharge cylinder 2 is not affected during the scraper 3's movement.

[0026] In this embodiment, the discharge cylinder 2 is provided with a sealed and visible observation port, which is located on the opposite side of the discharge port 1. This allows for observation of the material hanging and scraping effects inside the furnace and at the discharge port 1 of the single-walled carbon nanotube preparation device, and facilitates reasonable adjustment of the working frequency of the scraper 3.

[0027] In this embodiment, the discharge cylinder 2 includes an upper air outlet and a lower storage end. The direction of the air outlet and the storage end is perpendicular to the direction of the scraper 3, and the product scraped by the scraper 3 is exactly in the direction of material transport. The air outlet and the storage end of the discharge cylinder 2 are connected. The air outlet is equipped with a hot water spray assembly 4 (preferably with a two-layer structure, each layer including a ring of atomizing nozzles, and the upper end of the discharge cylinder 2 is equipped with a conical exhaust cover, in which a ring of atomizing nozzles is set inside the exhaust cover for further settling of the fine powder that has not settled completely below, thereby improving the product collection rate). The storage end is equipped with a water / material outlet. Under the action of hot water, the product scraped by the scraper 3 is easily detached from the scraper and falls into the lower part of the discharge cylinder 2.

[0028] In this embodiment, a multi-tube array airflow condenser 5 (located between two layers of atomizing nozzles) is provided at the air outlet end of the upper part of the discharge cylinder 2 and in the middle of the scraper. The multi-tube array airflow condenser 5 consists of several small-diameter stainless steel tubes with mirror-finished inner walls welded on multiple concentric circles of different diameters centered on the cylinder. The gas discharged from the furnace passes through the inner wall of the tube, and water flows through the outer diameter of the tube to achieve the effect of heat exchange and cooling of the high-temperature airflow discharged from the furnace (the cold wall also plays the role of collecting the adhered products, which are then collected and settled again by the upper atomized water flow).

[0029] In this embodiment, the outer surface of the operating end of the scraper 3 and the inner wall of the discharge cylinder 2 are respectively provided with a hydrophobic coating, so that the product single-walled carbon nanotubes can easily detach from the scraper 3.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A discharge mechanism for continuous preparation of single-walled carbon nanotubes, disposed at the discharge port of a single-walled carbon nanotube preparation device, characterized in that, Includes a discharge cylinder and a scraper mounted on one side wall of the discharge cylinder. The scraper is movable and sealed to the wall of the discharge cylinder. The scraper includes a control end and an operating end. The control end is located outside the discharge cylinder, and the operating end is located inside the discharge cylinder and moves in and out of the discharge port of the single-walled carbon nanotube preparation device. The discharge cylinder is sealed to the discharge port of the single-walled carbon nanotube preparation device.

2. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to claim 1, characterized in that, The operating end of the scraper has a T-shaped or L-shaped structure. The horizontal portion of the T-shaped or L-shaped structure is located at the end of the operating terminal, and the horizontal portion of the T-shaped or L-shaped structure is connected to the control terminal.

3. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to claim 1, characterized in that, The travel distance of the operating end of the scraper is not less than the total length of the product position inside the discharge port.

4. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to claim 1, characterized in that, The scraper's control terminal is equipped with a drive unit. The drive unit can be driven in one of the following modes: manual, electric, pneumatic, or hydraulic.

5. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to any one of claims 4, characterized in that, The control end of the scraper is connected to a rotating component to ensure that the operating end of the scraper can rotate 360°.

6. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to claims 1-5, characterized in that, The connection between the scraper and the discharge cylinder is sealed by two opposing R-type sealing rings or existing axial sealing rings.

7. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to claims 1-5, characterized in that, The discharge cylinder is provided with a sealed and visible observation port, which is located on the opposite side of the discharge port.

8. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to claims 1-5, characterized in that, The discharge cylinder includes an upper air outlet and a lower material storage end. The direction of the air outlet and the material storage end is perpendicular to the direction of the scraper.

9. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to claim 8, characterized in that, The air outlet of the discharge cylinder is connected to the material storage end. A hot water spray assembly is provided at the air outlet, and a water / material outlet is provided at the material storage end.

10. The discharge mechanism for continuous preparation of single-walled carbon nanotubes according to claim 9, characterized in that, The outer surface of the operating end of the scraper and / or the inner wall of the discharge cylinder are respectively provided with a hydrophobic coating.

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