Continuous charging device and horizontal kiln

Abstract

The utility model relates to carbon nanotube processing technical field discloses a kind of continuous feeding device and horizontal kiln, including feed assembly, feed assembly is used to supply raw material, feed assembly includes storage cylinder, insulation room, insulation core, processing box and transport pipe, insulation room is symmetrically arranged at the both ends of storage cylinder, and each insulation room is fixedly connected with storage cylinder, insulation core is arranged in corresponding insulation room, and each insulation core is rotationally arranged, first, the insulation core of upper end is rotated to open, then raw material is sent to the middle part of storage cylinder through the insulation room of upper end, then the insulation core of upper end is rotated to close, then the insulation core of bottom is rotated to open, raw material is sent to processing box, temporary airtight cavity is formed by the setting of storage cylinder, insulation room, insulation core, after raw material in processing box is in vacuum or constant pressure state, transport by transport pipe, raw material is supplied to vacuum airtight environment, without batch processing.

Description

Technical Field

[0001] This utility model belongs to the field of carbon nanotube processing technology, specifically, it relates to a continuous feeding device and a horizontal kiln. Background Technology

[0002] Carbon nanotubes, also known as buckytubes, are one-dimensional quantum materials with a unique structure (radial dimensions on the nanometer scale, axial dimensions on the micrometer scale, and both ends of the tube are essentially sealed). Carbon nanotubes are primarily composed of several to dozens of layers of coaxial cylindrical tubes arranged in a hexagonal pattern; the layers maintain a fixed distance of approximately 0.34 nm, and their diameters typically range from 2 to 20 nm. Based on the different axial orientations of the carbon hexagons, they can be classified into three types: zigzag, armchair, and helical. Helical carbon nanotubes are chiral, while zigzag and armchair-shaped carbon nanotubes are not. Since their discovery in the 1990s, carbon nanotubes have attracted great interest from scientists worldwide due to their unique structure, special physicochemical properties, and potential applications, making them a research hotspot in physics, chemistry, and materials science.

[0003] A document with publication number (CN213841782U) discloses a purification furnace for preparing carbon nanotubes, comprising a furnace body, an inlet device fixed to the upper end of the furnace body, a processing device located inside the furnace body, and a receiving box fixed to the lower end of the furnace body. The inlet device, processing device, and receiving box are sequentially connected. The processing device has a first purification layer fixed to the furnace body and a second purification layer rotating relative to the first purification layer, with a hot runner formed between the second purification layer and the first purification layer. The inlet device passes through the first purification layer and the hot runner, which connects to the receiving box. This utility model has a simple structure and can rapidly and continuously prepare and purify carbon nanotubes. The second purification layer works in conjunction with the first purification layer in the hot runner, allowing the carbon nanotubes to move in the hot runner and continuously contact the surfaces of the second and first purification layers, resulting in uniform heating and purification, thus improving the quality of the carbon nanotubes.

[0004] The aforementioned device does not take feeding into account. Since existing technologies process raw materials through a vacuum-regulated environment, the feeding aspect has not been improved, resulting in the need for batch processing, which affects processing efficiency.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the problem of raw material feeding technology, the basic concept of the technical solution adopted by this utility model is as follows: A continuous feeding device includes a feeding assembly for supplying raw materials. The feeding assembly includes a storage cylinder, an isolation chamber, an isolation core, a processing box, and a transport pipe. The isolation chambers are symmetrically arranged at both ends of the storage cylinder, and each isolation chamber is fixedly connected to the storage cylinder. The isolation core is arranged in the corresponding isolation chamber, and each isolation core is rotatably arranged. The processing box is fixedly connected to the bottom of the storage cylinder, and the transport pipe is fixedly connected to the processing box.

[0007] In a preferred embodiment of this utility model, a first motor is fixedly connected to one side of each isolation chamber, and the output end of the first motor is fixedly connected to the corresponding isolation core, with the isolation core in close contact with the inner wall of the isolation chamber.

[0008] In a preferred embodiment of this utility model, each insulating core has a through hole in the middle, and baffles are staggered on each through hole.

[0009] In a preferred embodiment of this utility model, each isolation chamber is provided with an air supply pipe on its side wall, and each air supply pipe is fixedly connected to the inner wall of the isolation chamber, with the end of the air supply pipe penetrating through the wall of the isolation chamber.

[0010] In a preferred embodiment of this utility model, an array of gas supply lines is arranged on one side of the processing box, and each gas supply line passes through the processing box. A shield is fixedly connected inside the processing box.

[0011] In a preferred embodiment of this utility model, a drive motor is fixedly connected to the processing box, and the output end of the drive motor is connected to a heating roller assembly via a coupling. The heating roller assembly is fixedly connected to an auger, which is in close contact with the inner wall of the conveying pipe. A discharge end is fixedly connected to the bottom of the conveying pipe.

[0012] A horizontal kiln includes a kiln body, the upper end of which is fixedly connected to the discharge end, and all of the above-mentioned continuous feeding devices are provided on the kiln body.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The continuous feeding device and horizontal kiln first rotate and open the upper insulating core, then send the raw material through the upper insulating chamber to the middle of the storage cylinder, then rotate and close the upper insulating core, and then rotate and open the bottom insulating core to send the raw material into the processing box. The storage cylinder, the insulating chamber and the insulating core form a temporary sealed cavity. After the raw material in the processing box is in a vacuum or constant pressure state, it is transported through the transport pipe, realizing the supply of raw materials to a vacuum sealed environment without the need for batch processing.

[0014] 2. In this continuous feeding device and horizontal kiln, the gas supply pipe supplies carrier gas or inert gas into the isolation chamber. The carrier gas and inert gas enter the isolation core to form an air curtain. The raw material enters through the isolation chamber and the air curtain, thereby isolating the external gas and performing the process multiple times.

[0015] 3. In this continuous feeding device and horizontal kiln, the continuous supply of carrier gas through the gas pipeline ensures stable gas pressure in the processing box. The auger rotates with the heating roller group, which transports the raw materials and discharges them through the discharge end, thus achieving preheating and transporting of the raw materials. At the same time, the carrier gas of another processed raw material is transported, realizing the simultaneous addition of multiple raw materials and treating the remaining external gas.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure between the storage cylinder and the transport pipe of this utility model; Figure 3 This is a schematic diagram of the internal structure of the isolation chamber of this utility model; Figure 4 This is a schematic diagram of the transport pipe structure of this utility model; Figure 5 This is a schematic diagram of the internal structure of the transport pipe of this utility model.

[0018] In the diagram: 1. Kiln body; 2. Storage cylinder; 21. Isolation chamber; 22. First motor; 23. Isolation core; 24. Gas supply pipe; 3. Processing box; 31. Gas transmission pipeline; 32. Shielding cover; 4. Transport pipe; 41. Discharge end; 42. Drive motor; 43. Screw conveyor; 44. Heating roller assembly. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0020] Please see Figure 1-5 A continuous feeding device includes a feeding assembly for supplying raw materials. The feeding assembly includes a storage cylinder 2, an isolation chamber 21, an isolation core 23, a processing box 3, and a transport pipe 4. The isolation chambers 21 are symmetrically arranged at both ends of the storage cylinder 2, and each isolation chamber 21 is fixedly connected to the storage cylinder 2. The isolation core 23 is arranged in the corresponding isolation chamber 21, and each isolation core 23 is rotatably arranged. The processing box 3 is fixedly connected to the bottom of the storage cylinder 2, and the transport pipe 4 is fixedly connected to the processing box 3. First, the upper insulating core 23 is rotated open. Then, the raw material is sent to the middle of the storage cylinder 2 through the upper insulating chamber 21. Then, the upper insulating core 23 is rotated closed. Then, the bottom insulating core 23 is rotated open to send the raw material into the processing box 3. The storage cylinder 2, the insulating chamber 21, and the insulating core 23 form a temporary sealed cavity. After the raw material in the processing box 3 is in a vacuum or constant pressure state, it is transported through the transport pipe 4 to achieve the supply of raw materials to a vacuum sealed environment without the need for batch processing.

[0021] Each isolation chamber 21 is fixedly connected to one side of a first motor 22. The output end of the first motor 22 is fixedly connected to the corresponding isolation core 23. The isolation core 23 is in close contact with the inner wall of the isolation chamber 21. Each isolation core 23 has a through hole in the middle. Each through hole is provided with baffles in an alternating manner. Each isolation chamber 21 has an air supply pipe 24 on its side wall. Each air supply pipe 24 is fixedly connected to the inner wall of the isolation chamber 21, and the end of the air supply pipe 24 penetrates the wall of the isolation chamber 21. In operation, both isolation cores 23 are first rotated to the closed state through the output end of the first motor 22, i.e., the through holes are placed horizontally. Then, the air supply pipe 24 supplies carrier gas or inert gas into the isolation chamber 21. The carrier gas and inert gas enter the isolation core 23 to form an air curtain. Then, the first motor 22 drives the upper isolation core 23 to open. Then, the raw material enters through the isolation chamber 21 and the air curtain, thus isolating the external gas. Then, the upper isolation core 23 is closed, and the lower isolation core 23 is opened through the corresponding first motor 22. The raw material passes through the secondary air curtain, which isolates the gas that passed through the upper air curtain again, blocking the external gas and preventing the presence of reactive gases in subsequent processing from affecting product quality.

[0022] Among them, the processing box 3 is arranged with air supply pipes 31 on one side, each air supply pipe 31 passes through the processing box 3, the processing box 3 is fixedly connected with a shield 32, the processing box 3 is fixedly connected with a drive motor 42, the output end of the drive motor 42 is connected to a heating roller group 44 through a coupling, the heating roller group 44 is fixedly connected with an auger 43, the auger 43 is in close contact with the inner wall of the conveying pipe 4, and the bottom of the conveying pipe 4 is fixedly connected with a discharge end 41; After the raw materials enter the processing box 3, the gas supply pipeline 31 continuously supplies carrier gas to the processing box 3. Then, the drive motor 42 drives the heating roller group 44 to rotate. The heating roller group 44 heats the raw materials during rotation, realizing the preheating of the raw materials and consuming other residual gases through the heating reaction. The continuous supply of carrier gas from the gas supply pipeline 31 ensures the stable gas pressure in the processing box 3. The auger 43 follows the rotation of the heating roller group 44, which transports the raw materials and discharges them through the discharge end 41, realizing the preheating and transportation of the raw materials. At the same time, the carrier gas of another processed raw material is transported, realizing the simultaneous addition of multiple raw materials and treating the remaining external gases.

[0023] A horizontal kiln includes a kiln body 1, the upper end of the kiln body 1 is fixedly connected to the discharge end 41, and the kiln body 1 is provided with all of the above-mentioned continuous feeding devices. First, the upper insulating core 23 is rotated open. Then, the raw material is sent to the middle of the storage cylinder 2 through the upper insulating chamber 21. Then, the upper insulating core 23 is rotated closed. Then, the bottom insulating core 23 is rotated open to send the raw material into the processing box 3. The storage cylinder 2, the insulating chamber 21, and the insulating core 23 form a temporary sealed cavity. After the raw material in the processing box 3 is in a vacuum or constant pressure state, it is transported through the transport pipe 4 to achieve the supply of raw materials to a vacuum sealed environment without the need for batch processing.

[0024] It is worth noting that the kiln body 1 includes a furnace body, an inlet device fixed to the upper end of the furnace body, a processing device located inside the furnace body, and a receiving box fixed to the lower end of the furnace body. The inlet device, processing device, and receiving box are sequentially connected. The processing device is provided with a first purification layer fixed to the furnace body and a second purification layer rotating relative to the first purification layer. A hot runner is formed between the second purification layer and the first purification layer. The inlet device passes through the first purification layer and the hot runner, and the hot runner is connected to the receiving box. The above-mentioned utility model has a simple structure and can quickly and continuously prepare and purify carbon nanotubes. The second purification layer is set up to work with the first purification layer in the hot runner, so that the carbon nanotubes move in the hot runner and continuously contact the surfaces of the second purification layer and the first purification layer, resulting in uniform heating and thus uniform purification, improving the quality of carbon nanotubes. The kiln body 1 is disclosed in the prior art announcement document CN213841782U, which describes a purification furnace for preparing carbon nanotubes. It will not be described again here.

[0025] Working principle: First, the upper insulating core 23 is rotated open, and then the raw material is sent to the middle of the storage cylinder 2 through the upper insulating chamber 21. Then, the upper insulating core 23 is rotated closed, and then the bottom insulating core 23 is rotated open to send the raw material into the processing box 3. The storage cylinder 2, the insulating chamber 21, and the insulating core 23 form a temporary sealed cavity. After the raw material in the processing box 3 is in a vacuum or constant pressure state, it is transported through the transport pipe 4, realizing the supply of raw materials to a vacuum sealed environment without batch processing. In operation, both insulating cores 23 are first rotated to the closed state through the output end of the first motor 22, that is, the through hole is placed horizontally. Then, the air supply pipe 24 supplies carrier gas or inert gas into the insulating chamber 21. The carrier gas and inert gas enter the insulating core 23 to form an air curtain. Then, the first motor 22 drives the upper insulating core 23 to open, and then the raw material enters through the insulating chamber 21 and the air curtain, realizing the isolation of the outside environment. Gas isolation is achieved by closing the upper isolation core 23 and opening the lower isolation core 23 via the corresponding first motor 22. The raw material passes through a secondary gas curtain, which isolates the gas passing through the upper gas curtain again, blocking external gases and preventing the presence of reactive gases in subsequent processing that could affect product quality. After the raw material enters the processing box 3, the gas supply pipeline 31 continuously supplies carrier gas to the processing box 3. Then, the drive motor 42 drives the heating roller group 44 to rotate. The heating roller group 44 heats the raw material during rotation, achieving preheating and consuming other residual gases through heating reaction. The continuous supply of carrier gas through the gas supply pipeline 31 ensures stable gas pressure in the processing box 3. The auger 43 rotates with the heating roller group 44, which transports the raw material and discharges it through the discharge end 41, achieving preheating and transport of the raw material. It also simultaneously transports the carrier gas of another processed raw material, achieving simultaneous addition of multiple raw materials and processing of remaining external gases.

[0026] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A continuous charging device, characterized by, include: The feeding assembly is used to supply raw materials. The feeding assembly includes a storage cylinder (2), an isolation chamber (21), an isolation core (23), a processing box (3), and a transport pipe (4). The isolation chambers (21) are symmetrically arranged at both ends of the storage cylinder (2), and each isolation chamber (21) is fixedly connected to the storage cylinder (2). The isolation core (23) is arranged in the corresponding isolation chamber (21), and each isolation core (23) is rotatably arranged. The processing box (3) is fixedly connected to the bottom of the storage cylinder (2), and the transport pipe (4) is fixedly connected to the processing box (3).

2. The continuous charging device according to claim 1, characterized in that Each of the isolation chambers (21) is fixedly connected to one side of a first motor (22), the output end of the first motor (22) is fixedly connected to the corresponding isolation core (23), and the isolation core (23) is in close contact with the inner wall of the isolation chamber (21).

3. The continuous charging device according to claim 2, characterized in that Each of the insulating cores (23) has a through hole in the middle, and baffles are staggered on each through hole.

4. The continuous charging device according to claim 1, wherein Each of the isolation chambers (21) is provided with an air supply pipe (24) on its side wall. Each air supply pipe (24) is fixedly connected to the inner wall of the isolation chamber (21), and the end of the air supply pipe (24) penetrates the wall of the isolation chamber (21).

5. The continuous charging device according to claim 1, wherein The processing box (3) is provided with gas pipelines (31) arranged in an array on one side. Each gas pipeline (31) passes through the processing box (3). A shield (32) is fixedly connected inside the processing box (3).

6. The continuous charging device of claim 1, wherein A drive motor (42) is fixedly connected to the processing box (3). The output end of the drive motor (42) is connected to a heating roller group (44) via a coupling. The heating roller group (44) is fixedly connected to an auger (43). The auger (43) is in close contact with the inner wall of the transport pipe (4). A discharge end (41) is fixedly connected to the bottom of the transport pipe (4).

7. A horizontal kiln, characterized by It includes a kiln body (1), the upper end of the kiln body (1) is fixedly connected to the discharge end (41), and the kiln body (1) is provided with a continuous feeding device as described in any one of claims 1-6.

Images