Negative electrode material sintering furnace cooling roller

Abstract

The utility model relates to negative electrode material cooling equipment technical field especially relates to a kind of negative electrode material sintering furnace cooling roller, it includes transverse roller, the bottom of the roller is immersed in cooling water tank, the inside of the roller is provided with a circle cooling water pipe, the cooling water pipe is through pipe, and two ends pass out the roller both ends variable-diameter cylinder wall, the both ends of the cooling water pipe are immersed in the cooling water tank when rotating to bottom end with the roller. The cooling water pipe is watered from the cooling water tank, and directly contact with material, and have greater contact area, to better heat exchange cooling material;In addition, the utility model is also provided with baffle device, can make material stay more time in the roller, to reach better cooling effect.

Description

Technical Field

[0001] This utility model relates to the technical field of anode material cooling equipment, and in particular to a cooling drum for anode material sintering furnace. Background Technology

[0002] Artificial graphite anode materials need to be cooled to room temperature after exiting the high-temperature furnace to prevent oxidation upon contact with air. Existing cooling furnaces are horizontally rotatable furnaces, with one end connected to the high-temperature furnace and the other end serving as the discharge port. Because of the need to prevent oxidation of the high-temperature graphite, ventilation cooling is not possible. The commonly used cooling method is water cooling, which involves immersing the drum in a cooling water tank and spraying cooling water above the drum, indirectly cooling the material inside the drum by cooling the drum itself.

[0003] However, because it is indirect cooling and the drum wall is generally thick, the above cooling method is not very effective in cooling the material inside the drum, or in order to ensure the cooling effect, the cooling efficiency is low, which in turn affects the production efficiency of the negative electrode material.

[0004] On the other hand, high-temperature graphite has good fluidity. When it enters the cooling drum from the high-temperature furnace, it will rush forward a long distance, which further reduces the cooling time and also reduces the cooling effect.

[0005] Therefore, the problem to be solved in this case is how to improve the cooling efficiency of the cooling roller for the negative electrode material so as not to affect the production efficiency of the negative electrode material and to ensure the cooling effect. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of the existing technology by providing a cooling drum for a negative electrode material sintering furnace. This drum has cooling water pipes installed inside it, which allow the cooling water pipes to come into contact with the material, thereby improving the cooling efficiency.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a cooling drum for a negative electrode material sintering furnace, including a horizontally placed drum, the bottom of which is immersed in a cooling water tank, and a ring of cooling water pipes inside the drum. The cooling water pipes are through pipes, and both ends of which pass through the drum wall at both ends where the diameter changes. When the drum rotates to the bottom, both ends of the cooling water pipes are immersed in the cooling water tank.

[0008] In the above configuration, the roller is an existing device, with the thicker middle section being the cooling section and the thinner ends being the inlet and outlet sections, and the middle and the two ends being connected by a cone. When the cooling water pipe rotates to the bottom as the roller rotates, the two ends of the pipe that pass through the roller will be immersed in the cooling water tank, thereby allowing cooling water to flow into the cooling water pipe.

[0009] Preferably, the inner wall of the drum is provided with a spiral band that propels the negative electrode material forward when the drum rotates, and the cooling water pipe is in close contact with the spiral band.

[0010] The above configuration is an improvement on the existing equipment. In order to reduce the difficulty and workload of the modification project, the cooling water pipe does not pass through the spiral belt, but is close to the inner ring of the spiral belt. Since the material moves along the spiral belt, the cooling water pipe can make full contact with the material as much as possible, thereby improving the cooling efficiency.

[0011] Preferably, the axis of the cooling water pipe is parallel to the axis of the drum.

[0012] Alternatively, the axis of the cooling water pipe can be set to be non-parallel to the axis of the roller, or even be a bent pipe. The former makes it easier for water to enter and flow out of the cooling water pipe, while the latter allows water to remain in the cooling water pipe for a longer time.

[0013] Preferably, the cooling water pipe is a thin-walled iron pipe, and the two ends of the cooling water pipe intersect with the roller at the points where they pass through and are sealed by welding.

[0014] The above configuration is because the temperature of the incoming material is higher than 1000℃, and the roller is generally made of steel. Therefore, in order to ensure the high temperature resistance and ease of welding of the cooling water pipe, the cooling water pipe is made of iron. In addition, in order to prevent the thin-walled cooling water pipe from being welded through during welding, the two ends of the cooling water pipe can be thickened.

[0015] Preferably, there are at least ten cooling water pipes, which are evenly distributed along the circumference of the drum, and the distribution circle is coaxial with the drum.

[0016] Preferably, a water tank is provided in the middle of the roller, and the water tank is connected to the middle section of each of the cooling water pipes through water pipes.

[0017] The water tank in the above configuration is circular and has a certain thickness (such as 4 times the diameter of the cooling water pipe). The water tank connects all the water pipes, so the water in the higher cooling water pipe will flow through the water tank to the lower cooling water pipe. On the one hand, this keeps the water in the cooling water pipe in a flowing state, promotes heat exchange, and has a better cooling effect. On the other hand, it makes the water volume in the lower cooling water pipe more abundant, thereby cooling more material accumulated at the bottom of the drum.

[0018] Preferably, a baffle device is provided at each end of the roller, and the baffle device includes at least three mounting plates arranged in a ring and fixed to the inner wall of the roller, and the three mounting plates are connected and fixed to each other by bolts.

[0019] The baffle device is installed at both ends of the drum cooling section. The baffle device can block the material, so that the material stays in the drum for a longer time and achieves a better cooling effect.

[0020] Preferably, the baffle is composed of at least two plates spliced ​​together, and the two spliced ​​plates are fixed together by bolts.

[0021] The above configuration is because the two ends of the roller are relatively thin, and the baffle needs to be designed as a spliced ​​structure to facilitate the entry of the baffle.

[0022] The beneficial effects of this utility model are as follows: A cooling drum for a negative electrode material sintering furnace includes a horizontally placed drum, the bottom of which is immersed in a cooling water tank. A ring of cooling water pipes is arranged inside the drum. These cooling water pipes are continuous pipes, with both ends extending out of the drum walls at the changing diameters at both ends. The two ends of the cooling water pipes are immersed in the cooling water tank when the drum rotates to its bottom. Water is drawn from the cooling water tank through the cooling water pipes and comes into direct contact with the material, resulting in a larger contact area and thus better heat exchange and cooling of the material. Furthermore, this utility model also includes a baffle device, which allows the material to remain inside the drum for a longer period, thereby achieving a better cooling effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the cooling roller of a negative electrode material sintering furnace according to this utility model; Figure 2 This is a schematic diagram of the structure of the roller; Figure 3 yes Figure 2 AA section view; Figure 4 yes Figure 2 BB section view; Figure 5 yes Figure 2 A magnified view of part I.

[0024] Explanation of reference numerals in the attached figures: 1—Drum, 2—Cooling water tank, 3—Cooling water pipe, 4—Spiral belt, 5—Water tank, 6—Baffle device, 61—Mounting plate, 62—Baffle. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the present invention.

[0026] like Figures 1-5As shown, this embodiment of a cooling drum for a negative electrode material sintering furnace is an improvement on existing cooling drums for negative electrode material sintering furnaces to enhance the cooling effect. Its main inventive points are twofold: 1. A cooling water pipe 3 is installed inside the drum 1 to increase cooling efficiency; 2. A baffle device 6 is installed inside the drum 1 to increase cooling time.

[0027] Regarding the first invention point, the bottom of the horizontally placed roller 1 is immersed in the cooling water tank 2. A ring of cooling water pipes 3 is provided inside the roller 1. The cooling water pipes 3 are through pipes, and both ends of them pass through the cylinder wall of the roller 1, which has a variable diameter at both ends. The two ends of the cooling water pipes 3 are immersed in the cooling water tank 2 when the roller 1 rotates to the bottom.

[0028] The inner wall of the drum 1 is provided with a spiral band 4 that pushes the negative electrode material forward when the drum 1 rotates. The cooling water pipe 3 is arranged close to the spiral band 4 and is parallel to the axis of the drum 1.

[0029] In order to allow the water in the cooling water pipe 3 to flow and to keep a sufficient amount of cooling water in the lower cooling water pipe 3, in this embodiment a water tank 5 is provided in the middle of the roller 1. The water tank 5 is connected to the middle section of each cooling water pipe 3 through water pipes, and the connection point adopts a T-shaped pipe.

[0030] The cooling water pipe 3, the connecting pipe, and the tee pipe are made of galvanized iron pipe with a diameter of 70×3mm. The water tank 5 is disc-shaped and coaxial with the roller 1. The diameter of the water tank 5 is 300mm and the thickness is 4 times the diameter of the cooling water pipe 3.

[0031] The cooling principle of the aforementioned cooling water pipe 3 is as follows: both ends of the cooling water pipe 3 protrude from the roller 1, and the connection points with the roller 1 are sealed; as the cooling water pipe 3 rotates to its bottom with the roller 1, the pipe openings at both ends protruding from the roller 1 are immersed in the cooling water tank 2. Under water pressure, water in the cooling water tank 2 flows into the cooling water pipe 3; then, the cooling water pipe 3 gradually rises with the rotation of the roller 1, and the water level inside is higher than that in the water tank and also higher than the water level in the lower cooling water pipe 3. Therefore, the water in the higher-level water pipe flows through the intermediate water tank 5. The water flows downward into the lower water pipe (exchange channel) and then flows out from both ends of the lower water pipe, so that the water in the cooling water pipe 3 is in a flowing state, and the water in the lower water pipe is more abundant, so that the cooling water pipe 3, especially the lower cooling water pipe 3, has a better cooling effect (heat transfer cooling effect); on the other hand, whether it is the high or low position, especially the lower cooling water pipe 3, the water will flow out from both ends more quickly, so that the cooling water pipe 3 is empty before being immersed in the water tank, and then cooling water can be poured in after immersion in the cooling water tank 2.

[0032] Regarding the second inventive point, a baffle device 6 is provided at each end of the cooling section of the roller 1. The baffle device 6 includes at least three mounting plates 61 arranged in a ring and fixed to the inner wall of the roller 1. The three mounting plates 61 are connected and fixed with baffles 62 by bolts.

[0033] The baffle device 6 near the feed end can prevent the high-temperature graphite from rushing out too far, and the baffle device 6 near the discharge end can prevent the graphite outside the spiral belt 4 from advancing, so that the graphite stays in the cooling section of the drum 1 for a longer time. Both baffle devices 6 play the role of extending the graphite cooling time, thereby enhancing the cooling effect of the graphite in the drum 1.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and for the convenience of describing the technical solution, the front, back, left, right, top, middle, and bottom orientations are based on the accompanying drawings and are not a limitation on the protection scope of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the essence and scope of the technical solution of this utility model.

Claims

1. A cooling drum for a negative electrode material sintering furnace, characterized in that: It includes a horizontally placed drum, the bottom of which is immersed in a cooling water tank. A ring of cooling water pipes is provided inside the drum. The cooling water pipes are through pipes, and both ends of the pipes extend out of the drum wall at both ends where the diameters change. The two ends of the cooling water pipes are immersed in the cooling water tank when the drum rotates to the bottom.

2. The cooling drum of a negative electrode material sintering furnace according to claim 1, characterized in that: The inner wall of the drum is provided with a spiral band that propels the negative electrode material forward when the drum rotates, and the cooling water pipe is in close contact with the spiral band.

3. The cooling roller of the negative electrode material sintering furnace according to claim 1, characterized in that: The axis of the cooling water pipe is parallel to the axis of the drum.

4. The cooling drum of a negative electrode material sintering furnace according to claim 1, characterized in that: The cooling water pipe is a thin-walled iron pipe, and the two ends of the cooling water pipe intersect with the roller by welding.

5. The cooling drum of a negative electrode material sintering furnace according to claim 1, characterized in that: There are at least ten cooling water pipes, which are evenly distributed along the circumference of the drum, and the distribution circle is coaxial with the drum.

6. The cooling drum of a negative electrode material sintering furnace according to claim 1, characterized in that: A water tank is provided in the middle of the roller, and the water tank is connected to the middle section of each of the cooling water pipes through water pipes.

7. The cooling roller of a negative electrode material sintering furnace according to claim 1, characterized in that: Each end of the roller is provided with a baffle device, the baffle device comprising at least three mounting plates arranged in a ring and fixed to the inner wall of the roller, and the three mounting plates are connected and fixed to each other by bolts.

8. The cooling drum of a negative electrode material sintering furnace according to claim 7, characterized in that: The baffle is composed of at least two plates spliced ​​together, and the two spliced ​​plates are fixed together by bolts.

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