Carbon powder pyrolysis conveying device

Abstract

The utility model relates to the field of carbon material processing. The carbon powder pyrolysis conveying device comprises a conveying cylinder, a feeding port is formed in the upper portion of one end of the conveying cylinder, and a discharging port is formed in the lower portion of the other end of the conveying cylinder; a conveying shaft is arranged in the center of the interior of the conveying cylinder, and spiral conveying teeth are arranged on the circumferential surface of the conveying shaft; the conveying shaft is a hollow shaft, and the two ends of the conveying shaft extend out of the conveying cylinder and are connected with a downward air inlet bent pipe and an upward air outlet bent pipe through rotary joints correspondingly. A driven wheel is arranged at the position, close to the air inlet bent pipe, of the conveying shaft and connected with a driving wheel through a driving belt, and the driving wheel is connected with a conveying motor located at the bottom of the conveying cylinder. According to the spiral conveyor, rapid cooling in the spiral conveyor can be effectively achieved, and the influence of long-term high-temperature erosion on the spiral conveyor is weakened.

Description

Technical Field

[0001] This utility model relates to the field of carbon material processing technology, specifically to a carbon powder pyrolysis conveying device. Background Technology

[0002] Pyrolysis is an important method for producing high-value-added, high-purity carbon powders such as carbon nanotube materials, graphene precursors, and carbon conductive fillers. After high-temperature pyrolysis, the products are transported to subsequent processing steps via a conveying device. Screw conveyors are widely used in conveying pyrolysis products. However, because the materials still have a high temperature after pyrolysis, the corrosive effect of high temperature is significant during long-term use, causing considerable damage to the screw shaft. The resulting shaft deformation or blade deformation has many adverse effects on the normal operation of the screw conveyor. Summary of the Invention

[0003] The purpose of this invention is to provide a carbon powder pyrolysis conveying device that can rapidly cool down carbon powder.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows: a carbon powder pyrolysis conveying device, including a conveying cylinder, wherein a feed inlet is provided at the upper part of one end of the conveying cylinder and a discharge outlet is provided at the lower part of the other end; a conveying shaft is provided at the center inside the conveying cylinder, and spiral conveying teeth are provided on the circumferential surface of the conveying shaft.

[0005] The conveying shaft is a hollow shaft, with both ends extending outside the conveying cylinder and connected to the downward-facing air inlet bend and the upward-facing air outlet bend respectively via rotary joints; a driven wheel is provided near the air inlet bend on the conveying shaft, and the driven wheel is connected to the driving wheel via a drive belt, and the driving wheel is connected to the conveying motor located at the bottom of the conveying cylinder.

[0006] Preferably, an expansion cylinder is provided at the end of the air outlet bend, the expansion cylinder includes a cylinder body, the bottom of the cylinder body is connected to the air outlet bend through a conical tube; a plurality of vertical slots are evenly provided on the side wall of the cylinder body.

[0007] Preferably, two reinforcing rods are arranged side by side on both sides of the conveying shaft, and the reinforcing rods pass through the tooth body of the spiral conveying tooth and are fixedly connected to the spiral conveying tooth.

[0008] Preferably, the end of the air outlet bend near the conveying cylinder is connected to an active heat dissipation pipe via a tee, and the active heat dissipation pipe is equipped with a fan for blowing air to the outside of the active heat dissipation pipe.

[0009] The beneficial effects of this invention are mainly reflected in its ability to effectively achieve rapid cooling inside the screw conveyor, reducing the impact of long-term high-temperature corrosion on the screw conveyor. Specifically, during use, material enters the conveying cylinder from the inlet. As the conveying shaft rotates, the screw conveying teeth push the material towards the outlet, and finally discharge it from the outlet. Because the conveying shaft is hollow, the material can fully exchange heat with the air inside the hollow shaft during the pushing process. The hollow shaft has downward-facing air inlet bends and upward-facing air outlet bends at both ends. As hot air is discharged upward from the air outlet bends, cold air can be quickly replenished from the air inlet bends, forming an excellent "chimney effect," which assists the screw conveyor in rapid heat dissipation, reduces high-temperature corrosion damage, and extends its service life. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the expansion cylinder. Detailed Implementation

[0012] like Figure 1-2 As shown, this utility model is a carbon powder pyrolysis conveying device, used to convey the material discharged from the pyrolysis furnace to subsequent processing equipment, such as... Figure 1 As shown, this utility model includes a conveying cylinder 1, with a feed inlet 2 at the upper part of one end and a discharge outlet 3 at the lower part of the other end. Material is fed in through the feed inlet 2 and discharged through the discharge outlet 3. The overall length of the conveying cylinder 1 is designed according to actual conditions, and multiple cylinders can also be combined for conveying.

[0013] like Figure 1 As shown, a conveying shaft 4 is centrally located inside the conveying cylinder 1, and spiral conveying teeth 5 are arranged on the circumference of the conveying shaft 4. During rotation, the conveying shaft 4 is pushed forward by the spiral conveying teeth 5. To reinforce the spiral conveying teeth 5, two reinforcing rods 17 are arranged side-by-side on both sides of the conveying shaft 4. The reinforcing rods 17 pass through the teeth of the spiral conveying teeth 5 and are fixedly connected to them. The reinforcing rods 17 serve two purposes: strengthening the material and breaking up clumps during material conveying, improving its conveyability and heat dissipation.

[0014] The conveying shaft 4 described in this invention is a hollow shaft. Both ends of the conveying shaft 4 extend outside the conveying cylinder 1 and are connected to the downward-facing inlet bend 6 and the upward-facing outlet bend 7 respectively via rotary joints 8, thus preventing the conveying shaft 4 from interfering with the outlet bend 7 and the inlet bend 6 during rotation. Regarding its driving mechanism, as... Figure 1As shown, a driven wheel 9 is provided near the air inlet bend 6 on the conveying shaft 4. The driven wheel 9 is connected to the driving wheel 11 via a drive belt 10. The driving wheel 11 is connected to the conveying motor 12 located at the bottom of the conveying cylinder 1.

[0015] In use, material enters the conveying cylinder 1 through the feed inlet 2. As the conveying shaft 4 rotates, the spiral conveying teeth 5 push the material towards the discharge outlet 3, and finally discharge it from the discharge outlet 3. Since the conveying shaft 4 is a hollow shaft, the material can fully exchange heat with the air inside the hollow shaft 4 during the pushing process. The hollow shaft 4 has downward-facing air inlet bends 6 and upward-facing air outlet bends 7 at both ends. As hot air is discharged upward from the air outlet bends 7, cold air can be quickly replenished from the air inlet bends 6, forming an excellent "chimney effect". This helps the spiral conveyor to dissipate heat quickly, reduces high-temperature erosion damage, and improves its service life.

[0016] To further enhance the chimney effect and increase the airflow speed within the conveyor shaft 4, the end of the outlet bend 7 described in this invention, namely... Figure 1 An expansion cylinder 13 is provided at the right end of the middle, such as Figure 2 As shown, the expansion cylinder 13 includes a cylinder body 14, the bottom of which is connected to the outlet bend 7 via a conical tube 15. Several vertical slots 16 are evenly arranged on the side wall of the cylinder body 14. After the airflow is accelerated through the conical tube 15, it suddenly enters the cylinder body 14, forming a low-pressure zone. This creates a significant pressure difference with the end of the outlet bend 7, allowing the airflow inside the outlet bend 7 to flow out rapidly.

[0017] In addition, this invention can also connect an active heat dissipation pipe 19 to the end of the air outlet bend 7 near the conveying cylinder 1 via a tee 18. The active heat dissipation pipe 19 is internally equipped with a fan 20 for blowing air outwards. When passive heat dissipation is insufficient, the fan 20 can be turned on to actively exhaust air and promote the rapid entry of hot air from the conveying shaft 4 into the active heat dissipation pipe 19, thereby achieving active heat dissipation. Of course, in this case, the tee has an openable and closable valve core, which can close the connection with the end of the air outlet bend 7 when the active exhaust is turned on.

Claims

1. A carbon powder pyrolysis conveying device, comprising a conveying cylinder (1), wherein a feed inlet (2) is provided at the upper part of one end of the conveying cylinder (1) and a discharge outlet (3) is provided at the lower part of the other end; a conveying shaft (4) is provided at the center inside the conveying cylinder (1), and a spiral conveying tooth (5) is provided on the circumferential surface of the conveying shaft (4). Its features are: The conveying shaft (4) is a hollow shaft. Both ends of the conveying shaft (4) extend outside the conveying cylinder (1) and are connected to the downward-facing air inlet bend (6) and the upward-facing air outlet bend (7) respectively through a rotary joint (8). A driven wheel (9) is provided near the air inlet bend (6) of the conveying shaft (4). The driven wheel (9) is connected to the driving wheel (11) through a drive belt (10). The driving wheel (11) is connected to the conveying motor (12) located at the bottom of the conveying cylinder (1).

2. The carbon powder pyrolysis conveying device according to claim 1, characterized in that: An expansion cylinder (13) is provided at the end of the air outlet bend (7). The expansion cylinder (13) includes a cylinder body (14). The bottom of the cylinder body (14) is connected to the air outlet bend (7) through a conical tube (15). Several vertical slots (16) are evenly provided on the side wall of the cylinder body (14).

3. The carbon powder pyrolysis conveying device according to claim 2, characterized in that: Two reinforcing rods (17) are arranged side by side on both sides of the conveying shaft (4). The reinforcing rods (17) are inserted through the teeth of the spiral conveying teeth (5) and are fixedly connected to the spiral conveying teeth (5).

4. The carbon powder pyrolysis conveying device according to claim 3, characterized in that: The end of the air outlet bend (7) near the conveying cylinder (1) is connected to an active heat dissipation pipe (19) via a tee (18). The active heat dissipation pipe (19) is equipped with a fan (20) for blowing air to the outside of the active heat dissipation pipe (19).

Images