Carbon nanotube powder material feeding and premixing device

Abstract

The utility model relates to powder material processing equipment technical field, concretely is a kind of carbon nanotube powder material feeding premixing device, including horizontal mixing bin, the outside both sides of horizontal mixing bin are provided with bin cover, the top right side of horizontal mixing bin is provided with feed inlet, the inside of horizontal mixing bin is provided with mix stirring stirring assembly, the top of horizontal mixing bin is provided with jetting and scattering subassembly, the bottom of horizontal mixing bin is provided with discharge control mouth, the top of horizontal mixing bin is provided with dust recovery subassembly, the mix stirring stirring assembly includes servo motor, this carbon nanotube powder material feeding premixing device, carbon nanotube powder agglomerate is dispersed by airflow, then is stirred by screw band, blade is refined and stirred, residual is removed by scraper, and multiple structures are synergized to improve mixing quality and efficiency, also can negative pressure collect dust and recycle, pulse dust cleaning, buffering and shock absorption, both reduce waste and prevent pollution, and also keep device stable.

Description

Technical Field

[0001] This utility model relates to the technical field of powder material processing equipment, specifically a carbon nanotube powder feeding and premixing device. Background Technology

[0002] Material feeding and premixing devices are equipment used for material handling in industrial production. They can accurately control the feeding amount and convey materials. Through stirring and other methods, they can initially mix various materials to homogenize them for subsequent processing. Carbon nanotube powder is prone to agglomeration and difficult to disperse. This device can accurately control the feeding amount to prevent waste. It can also pre-mix to break up agglomerates and achieve uniform mixing with other materials, laying the foundation for subsequent processing and ensuring product quality.

[0003] A search revealed Chinese patent publication (CN220878547U), relating to the field of carbon nanotube powder material feeding and premixing technology. The invention includes a premixing tank and a powder storage tank. The premixing tank has a reflux pipe on its right side, with a Venturi ejector at its upper end and a slurry pump at its lower end. The slurry pump is connected to the lower inlet of the premixing reflux pipe, and the Venturi ejector is installed at the upper inlet. The powder storage tank has a feeding pipe on its left side, with one end connected to the Venturi ejector and the other end connected to the powder outlet. A feeding valve is installed on the feeding pipe. Utilizing the pipe design of the slurry pump and Venturi ejector, carbon nanotube material is guided from the powder storage tank to the premixing tank, achieving automatic dust-free feeding of the powder material. Combined with a high-speed shearing dispersion by a stirring device, a rapid premixing effect is achieved, greatly reducing dust generation associated with manual feeding. This enables rapid dust-free feeding and impregnation dispersion of carbon nanotube material.

[0004] The aforementioned patent proposes a pipeline design using a slurry pump and a Venturi ejector to guide carbon nanotube material from the powder storage tank to the premixing tank, achieving automatic dust-free feeding of the powder material. Combined with a high-speed shearing dispersion by a stirring device, it achieves a rapid premixing effect. However, it does not fully consider that carbon nanotubes are prone to agglomeration due to van der Waals forces, making it difficult to achieve single-tube dispersion by conventional stirring, which affects the uniformity of the slurry. Furthermore, carbon nanotube powder is prone to sticking to the wall, and conventional devices are not easy to design specifically to prevent sticking, which affects the mixing efficiency and causes secondary pollution of the material.

[0005] To address this, we propose a carbon nanotube powder feeding and premixing device capable of achieving single-unit dispersion and cleaning carbon nanotube powder adhering to the wall. Utility Model Content

[0006] One of the technical problems this application aims to solve is that it is difficult to achieve single-tube dispersion, which affects the uniformity of the slurry. Furthermore, carbon nanotube powder tends to stick to the wall, which affects the mixing efficiency and causes secondary pollution of the material.

[0007] To address the aforementioned technical problems, this application provides a carbon nanotube powder feeding and premixing device, comprising a horizontal mixing chamber, with covers on both sides of the external side of the horizontal mixing chamber, a feed inlet on the top right side of the horizontal mixing chamber, a mixing and stirring assembly inside the horizontal mixing chamber, an air jet dispersing assembly at the top of the horizontal mixing chamber, a discharge control port at the bottom of the horizontal mixing chamber, and a dust recovery assembly at the top of the horizontal mixing chamber.

[0008] In some embodiments, the mixing assembly includes a servo motor, the left side of which is disposed outside the chamber cover. The drive end of the servo motor is provided with a rotating shaft, the outside of which is rotatably connected to the inside of the two chamber covers. Multiple connecting rods are provided outside the rotating shaft, and a ribbon agitator is provided outside the multiple connecting rods.

[0009] In some embodiments, a ribbon agitator is provided on the outside of the plurality of connecting rods, a plurality of stirring blades are provided on the outside of the rotating shaft, the outside of the plurality of stirring blades is provided on the inside of the ribbon agitator, a rotating motor is provided on the outside of the hopper cover, and a hollow rotating column is provided at the drive end of the rotating motor.

[0010] In some embodiments, the hollow rotating column is rotatably connected to the outside left side of the rotating shaft, and four connecting plates are fixedly connected to the outside of the hollow rotating column. Scrapers are provided on the outside of the connecting plates, and the outside of the scrapers is in contact with the inside of the horizontal mixing chamber.

[0011] In some embodiments, the jet dispersing assembly includes an air pump, the bottom of which is disposed at the top of the horizontal mixing chamber, the output end of which is provided with a connecting pipe, the end of which is provided with a flow rate controller, the left side of which is provided with an output pipe, the end of which is disposed outside the chamber cover, and the inner side of the chamber cover is provided with a plurality of airflow nozzles.

[0012] In some embodiments, the dust recovery assembly includes a dust removal device, the bottom of which is disposed at the top of the horizontal mixing chamber, a negative pressure suction port is provided on the inner top of the horizontal mixing chamber, and a conveying hose is provided at the output end of the dust removal device.

[0013] In some embodiments, a pulse cleaning device is provided on the outside of the conveying hose, a buffer pad is provided at the bottom of the pulse cleaning device, the bottom of the buffer pad is located at the rear side of the horizontal mixing chamber, a receiving box is provided at the bottom of the conveying hose, the front side of the receiving box is located at the rear side of the horizontal mixing chamber, and two support seats are provided at the bottom of the horizontal mixing chamber.

[0014] This utility model has at least the following beneficial effects: 1. First, adjust the airflow speed according to the degree of powder agglomeration. Use the airflow nozzle to initially break up the agglomerates. Then, cooperate with the ribbon agitator of the mixing and stirring component to achieve overall circulation mixing and fine mixing with the stirring blades. At the same time, the scraper removes residual materials from the bin wall. The multi-structure collaboration ensures that the carbon nanotube powder is fully and evenly mixed with other materials, greatly improving the mixing quality. Moreover, the synchronous operation of each component shortens the premixing time and improves production efficiency.

[0015] 2. The carbon nanotube powder dust is collected by the negative pressure suction port and dust removal device. The collection box can be recycled and reused to avoid material waste. The pulse dust removal device ensures smooth dust conveying, and the buffer pad reduces vibration transmission, which not only reduces dust pollution to the environment, but also ensures stable operation of the device and provides good conditions for subsequent processing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rotating motor structure of this utility model; Figure 3 This is a schematic diagram of the airflow nozzle structure of this utility model; Figure 4 This is a schematic diagram of the scraper structure of this utility model; Figure 5 This is a schematic diagram of the conveying hose structure of this utility model.

[0017] In the diagram: 1. Horizontal mixing chamber; 2. Chamber cover; 3. Feed inlet; 4. Mixing and stirring assembly; 41. Servo motor; 42. Rotating shaft; 43. Connecting rod; 44. Ribbon agitator; 45. Stirring blade; 46. Rotary motor; 47. Hollow rotating column; 48. Connecting plate; 49. Scraper; 5. Air jet dispersing assembly; 51. Air pump; 52. Connecting pipe; 53. Flow rate controller; 54. Output pipe; 55. Air jet nozzle; 6. Discharge control port; 7. Dust recovery assembly; 71. Dust removal device; 72. Conveying hose; 73. Pulse cleaning device; 74. Buffer pad; 75. Receiving box; 8. Support base. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4This utility model provides a technical solution: A carbon nanotube powder feeding and premixing device includes a horizontal mixing chamber 1, which is a cylindrical hollow structure with a smooth inner wall, used to contain carbon nanotube powder and other materials to be mixed. Both sides of the horizontal mixing chamber 1 are equipped with chamber covers 2, which are circular plate structures adapted to the outer diameter of the horizontal mixing chamber 1, serving to seal the chamber. A feed inlet 3 is located on the top right side of the horizontal mixing chamber 1, with an openable and closable cover plate on top of the feed inlet 3 to facilitate material feeding and prevent dust escape. A mixing and stirring assembly 4 is installed inside the horizontal mixing chamber 1. The stirring component 4 is the core stirring component, used to realize the circulation stirring and fine mixing of materials. The top of the horizontal mixing chamber 1 is equipped with a jet dispersing component 5, which can generate a controllable airflow to initially disperse the agglomerated structure of carbon nanotube powder. The bottom of the horizontal mixing chamber 1 is equipped with a discharge control port 6, which has a built-in electric valve to precisely control the timing and rate of material discharge after mixing. The top of the horizontal mixing chamber 1 is equipped with a dust recovery component 7, which can absorb the dust raised in the chamber, realizing material recovery and environmental protection. The mixing assembly 4 includes a servo motor 41, a high-precision drive component with adjustable output speed to suit different mixing requirements. The servo motor 41 is positioned on the outside of the bin cover 2 and is fixedly connected to the bin cover 2 with bolts to ensure stable operation without displacement. A rotating shaft 42 is provided at the drive end of the servo motor 41, transmitting the driving force of the servo motor 41. The external part of the rotating shaft 42 is rotatably connected to the inside of the two bin covers 2. A sealed bearing is provided at the connection between the rotating shaft 42 and the bin cover 2 to ensure smooth rotation and prevent dust leakage. Multiple connecting rods 43, made of metal and evenly distributed along the circumference of the rotating shaft 42, are provided on the outside of the rotating shaft 42 for... A rotating shaft 42 is connected to a ribbon agitator 44. Multiple connecting rods 43 are externally mounted with ribbon agitators 44, which have a double-helix structure. These agitators drive the material to circulate axially along the hopper. The spiral direction of the ribbon agitator 44 matches the rotation direction, ensuring thorough mixing. Multiple agitator blades 45, sharp metal sheets arranged radially, are externally mounted on the rotating shaft 42 to cut and refine agglomerated materials. These blades are positioned inside the ribbon agitator 44, ensuring no interference between them and allowing for simultaneous material circulation and refinement. A rotating motor 46 is installed on the outside of the bin cover 2. The rotating motor 46 is a low-speed, high-torque motor that can drive the scraper 49 to stably scrape off the material on the bin wall. A hollow rotating column 47 is installed at the drive end of the rotating motor 46. The hollow rotating column 47 is a hollow metal column and is sleeved on the outside of the rotating shaft 42. It can rotate independently of the rotating shaft 42. The inside of the hollow rotating column 47 is rotatably connected to the outside left side of the rotating shaft 42. A sliding bearing is provided between the hollow rotating column 47 and the rotating shaft 42 to ensure that the two rotate independently without interfering with each other. Four connecting plates 48 are fixedly connected to the outside of the hollow rotating column 47. The connecting plates 48 are metal plates and are evenly distributed along the circumference of the hollow rotating column 47 to fix the scraper 49. The scraper 49 is installed on the outside of the connecting plates 48. The scraper 49 is made of elastic and wear-resistant material, which can fit tightly against the bin wall and avoid scratching the inner wall. The outside of the scraper 49 is in contact with the inside of the horizontal mixing bin 1. When the scraper 49 rotates with the hollow rotating column 47, it can thoroughly clean the residual material on the bin wall. The jet dispersing assembly 5 includes an air pump 51, which is a high-pressure air source device that can continuously output a stable airflow. The bottom of the air pump 51 is set at the top of the horizontal mixing chamber 1. The air pump 51 is fixed to the horizontal mixing chamber 1 by a bracket to reduce vibration transmission during operation. The output end of the air pump 51 is provided with a connecting pipe 52, which is a high-pressure wear-resistant hose used to transport the airflow generated by the air pump 51. The end of the connecting pipe 52 is provided with a flow rate controller 53, which is an electronic adjustment component that can accurately control the airflow speed according to the powder characteristics. The left side of the flow rate controller 53 is provided with an output pipe 54, which is a rigid metal pipe used to transport the adjusted airflow into the chamber. The end of the output pipe 54 is set outside the chamber cover 2 and is sealed to the chamber cover 2 to prevent airflow leakage. The inner side of the chamber cover 2 is provided with multiple airflow nozzles 55, which are inclined at multiple angles to ensure that the airflow evenly covers the material in the chamber.

[0020] Please see Figure 1 and Figure 5The dust recovery assembly 7 includes a dust collector 71, which is a bag filter dust collector that can efficiently filter dust particles. The bottom of the dust collector 71 is located at the top of the horizontal mixing chamber 1. The dust collector 71 is connected to the horizontal mixing chamber 1 via a flange to ensure sealing performance. A negative pressure suction port is provided on the inner top of the horizontal mixing chamber 1. The negative pressure suction port has a funnel-shaped structure and covers the top area inside the chamber, which can maximize the absorption of the raised dust. A conveying hose 72 is provided at the output end of the dust collector 71. The conveying hose 72 is a flexible transparent tube for easy observation of the dust conveying situation. A pulse cleaning device 73 is provided on the outside of the conveying hose 72. The pulse cleaning device 73 is a compressed air device. The pulse-jet structure can quickly remove dust adhering to the inner wall of the hose. The bottom of the pulse cleaning device 73 is equipped with a buffer pad 74, which is made of rubber and can absorb the vibration generated during pulse cleaning. The bottom of the buffer pad 74 is located at the rear of the horizontal mixing chamber 1 to ensure positional stability. The bottom of the conveying hose 72 is equipped with a collection box 75, which is a drawer-type structure for easy dust collection and easy removal for cleaning. The front of the collection box 75 is located at the rear of the horizontal mixing chamber 1. The bottom of the horizontal mixing chamber 1 is equipped with two support seats 8, which are inverted "U" shaped metal structures with anti-slip pads at the bottom to stably support the entire device and reduce vibration.

[0021] Based on the above embodiments, the following is the complete working principle of the above embodiments: The carbon nanotube powder to be processed and other materials to be mixed are put into the horizontal mixing chamber 1 through the feed port 3 on the top right side. The two support seats 8 at the bottom provide stable support for the entire device, ensuring that the device remains stable during subsequent operations. The air pump 51 in the jet dispersing component 5 is started. The airflow generated by the air pump 51 is delivered to the flow rate controller 53 through the connecting pipe 52. The flow rate controller 53 adjusts the airflow speed according to the degree of agglomeration of the carbon nanotube powder. The airflow enters the multiple airflow nozzles 55 inside the chamber cover 2 through the output pipe 54. The airflow nozzles 55 spray airflow into the chamber to initially disperse the easily agglomerated carbon nanotube powder and break up the powder agglomeration. The structure starts the servo motor 41 and the rotary motor 46 in the mixing assembly 4. The servo motor 41 drives the rotating shaft 42 to rotate. The rotating shaft 42 drives the ribbon agitator 44 to rotate through the connecting rod 43. At the same time, the stirring blades 45 outside the rotating shaft 42 rotate synchronously with the rotating shaft 42. The ribbon agitator 44 realizes the overall circulation and stirring of the materials in the chamber. The stirring blades 45 refine the initially dispersed carbon nanotube powder and other materials. The rotary motor 46 drives the hollow rotating column 47 to rotate. The hollow rotating column 47 drives the scraper 49 to rotate through the connecting plate 48. The scraper 49 contacts the inner side of the horizontal mixing chamber 1 to scrape off the carbon nanotube powder attached to the chamber wall, avoiding material residue and waste, and ensuring that the materials in the chamber fully participate in the mixing. During the feeding, dispersing, and mixing process, the dust removal device 71 in the dust recovery assembly 7 is activated. The dust removal device 71 generates negative pressure through the negative pressure suction port at the top of the inner side of the horizontal mixing chamber 1, sucking in the carbon nanotube powder dust raised in the chamber. The dust is transported to the collection box 75 through the conveying hose 72. When dust adheres to the conveying hose 72 and affects the conveying, the pulse cleaning device 73 is activated. The pulse cleaning device 73 generates pulse airflow to clean the conveying hose 72. The buffer pad 74 reduces the vibration transmission when the pulse cleaning device 73 is working, ensuring stable operation of the device. After the carbon nanotube powder and other materials are fully mixed in the horizontal mixing chamber 1, the discharge control port 6 at the bottom is opened, and the mixed material is discharged through the discharge control port 6, completing the feeding and pre-mixing operation of the entire carbon nanotube powder material.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A carbon nanotube powder feeding and premixing device, comprising a horizontal mixing chamber (1), characterized in that: The horizontal mixing chamber (1) is provided with a chamber cover (2) on both sides of its exterior. The horizontal mixing chamber (1) is provided with a feed inlet (3) on the top right side. The horizontal mixing chamber (1) is provided with a mixing and stirring assembly (4) inside. The horizontal mixing chamber (1) is provided with a jet dispersing assembly (5) on its top. The horizontal mixing chamber (1) is provided with a discharge control port (6) at its bottom. The horizontal mixing chamber (1) is provided with a dust recovery assembly (7) on its top.

2. The carbon nanotube powder feeding and premixing device according to claim 1, characterized in that: The mixing assembly (4) includes a servo motor (41), the left side of which is located outside the bin cover (2). The drive end of the servo motor (41) is provided with a rotating shaft (42), the outside of which is rotatably connected to the inside of the two bin covers (2). Multiple connecting rods (43) are provided outside the rotating shaft (42), and a ribbon agitator (44) is provided outside the multiple connecting rods (43).

3. The carbon nanotube powder feeding and premixing device according to claim 2, characterized in that: A ribbon agitator (44) is provided on the outside of the multiple connecting rods (43), a plurality of stirring blades (45) are provided on the outside of the rotating shaft (42), the outside of the multiple stirring blades (45) is provided on the inside of the ribbon agitator (44), a rotating motor (46) is provided on the outside of the bin cover (2), and a hollow rotating column (47) is provided on the drive end of the rotating motor (46).

4. The carbon nanotube powder feeding and premixing device according to claim 3, characterized in that: The hollow rotating column (47) is rotatably connected to the outside left side of the rotating shaft (42). Four connecting plates (48) are fixedly connected to the outside of the hollow rotating column (47). A scraper (49) is provided on the outside of the connecting plate (48). The outside of the scraper (49) is in contact with the inside of the horizontal mixing chamber (1).

5. The carbon nanotube powder feeding and premixing device according to claim 4, characterized in that: The jet dispersing assembly (5) includes an air pump (51), the bottom of which is located at the top of the horizontal mixing chamber (1). The output end of the air pump (51) is provided with a connecting pipe (52), and the end of the connecting pipe (52) is provided with a flow rate controller (53). The left side of the flow rate controller (53) is provided with an output pipe (54), and the end of the output pipe (54) is located outside the chamber cover (2). The inner side of the chamber cover (2) is provided with multiple airflow nozzles (55).

6. The carbon nanotube powder feeding and premixing device according to claim 1, characterized in that: The dust recovery assembly (7) includes a dust removal device (71), the bottom of which is located at the top of the horizontal mixing chamber (1). A negative pressure suction port is provided on the inner top of the horizontal mixing chamber (1), and a conveying hose (72) is provided at the output end of the dust removal device (71).

7. The carbon nanotube powder feeding and premixing device according to claim 6, characterized in that: The conveying hose (72) is provided with a pulse cleaning device (73) on its outside. The bottom of the pulse cleaning device (73) is provided with a buffer pad (74). The bottom of the buffer pad (74) is located on the rear side of the horizontal mixing chamber (1). The bottom of the conveying hose (72) is provided with a receiving box (75). The front side of the receiving box (75) is located on the rear side of the horizontal mixing chamber (1). The bottom of the horizontal mixing chamber (1) is provided with two support seats (8).

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