Vertical graphite furnace cooling and discharge device

Abstract

The utility model discloses a vertical graphite furnace cooling discharging device, including cooling cylinder and receiving hopper, cooling cylinder upper section is connected with graphite furnace discharge gate, and cooling cylinder lower section is connected with receiving hopper, and receiving hopper bottom end is provided with discharge gate, and the cross section of cooling cylinder is polygon, and the nearest distance of material in cooling cylinder and cooling cylinder inner wall does not exceed 1 / 3 of cooling cylinder maximum inner diameter. The utility model not only sets up the cross section of cooling cylinder as polygon, increases the contact area of cooling cylinder and material, makes the temperature of material rapidly reduce, still widens its bottom, reduces the condition of taking place and effectively improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling discharge equipment, specifically to a vertical graphite furnace cooling discharge device. Background Technology

[0002] A continuous graphitization furnace is a special type of graphitization furnace that produces graphitized products in a continuous production process. In a continuous graphitization furnace, materials are continuously fed into the furnace and undergo preheating, graphitization, and cooling stages. The entire process is continuous, allowing the furnace to continuously produce graphitized products. Compared to traditional periodic graphitization furnaces, continuous graphitization furnaces are more complex in design and operation, and require higher levels of technology and equipment.

[0003] The existing cooling system for continuous graphitization furnaces includes an upper cooling jacket, a middle cooling water jacket, and a final cooling water jacket. These three cooling water jackets are coaxially connected and maintain a low temperature by circulating cooling water. The discharged material comes into contact with the inner wall of the cooling system for cooling. However, this cooling system suffers from insufficient contact with the inner wall due to the simultaneous discharge of a large amount of material, resulting in poor cooling performance. Furthermore, the centrally located cooling water jacket increases the flow resistance of the material in the lower section during operation, easily causing blockages, uneven discharge, and affecting the uniformity of the thermal field within the furnace.

[0004] Therefore, we optimized the cooling discharge system to solve the above problems. Utility Model Content

[0005] Based on the above problems, this utility model provides a vertical graphite furnace cooling and discharge device to solve the problems of poor cooling effect, material blockage, and even explosion in the cooling and discharge devices of the existing continuous graphitization furnace.

[0006] To achieve the above objectives, this utility model adopts the following technical solution:

[0007] A vertical graphite furnace cooling and discharging device includes a cooling cylinder and a receiving hopper. The upper section of the cooling cylinder is connected to the graphite furnace outlet, and the lower section of the cooling cylinder is connected to the receiving hopper. The bottom end of the receiving hopper is provided with a discharge port. The cross-section of the cooling cylinder is polygonal, and the closest distance between the material at any position inside the cooling cylinder and the inner wall of the cooling cylinder does not exceed 1 / 3 of the maximum inner diameter of the cooling cylinder.

[0008] In one embodiment of this utility model, the cross-sectional shape of the cooling cylinder is any one of petal shape, sawtooth shape, or grid shape.

[0009] In one embodiment of this utility model, the inner wall of the cooling cylinder is provided with a plurality of protrusions, the number of which is 3-10.

[0010] In one embodiment of this utility model, the inner wall of the cooling cylinder is provided with a plurality of fins, the number of which is 3-12.

[0011] In one embodiment of this utility model, the cross-sectional area of ​​the cooling cylinder remains constant or increases from top to bottom.

[0012] In one embodiment of this utility model, multiple water inlets are provided on one side wall of the cooling cylinder, and multiple water outlets are provided on the other side wall of the cooling cylinder. The water inlets and the water outlets are connected by water channels, and the water channels are all spiral-shaped.

[0013] In one embodiment of this utility model, the fins are made of graphite or metal.

[0014] In one embodiment of this utility model, the closest distance between the material at any position inside the cooling cylinder and the inner wall of the cooling cylinder does not exceed 10cm.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0016] 1. In this utility model, by setting the cross-section of the cooling cylinder as a polygon, the distance between the inner wall of the cooling cylinder and the center of the cooling cylinder becomes closer, increasing the contact probability between the cooling cylinder and the internal material, reducing the heat dissipation path of the material, and causing the temperature of the material to drop rapidly, which is beneficial to continuous production.

[0017] 2. In this utility model, since the bottom of the cooling cylinder is connected to the discharge hopper, the design of the cooling cylinder cone can make its bottom wider, making it less prone to material blockage and improving production efficiency.

[0018] 3. In this utility model, by setting three sections of water inlet, water outlet and spiral water flow channel at the top, middle and bottom of the cooling cylinder, the cooling water can be quickly distributed to all parts, so that the temperature distribution is uniform and the thermal stress caused by temperature changes can be reduced. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional structural diagram of the cooling discharge device.

[0021] Figure 2 This is a schematic diagram of a cross-section of the cooling cylinder.

[0022] Figure 3 This is a schematic diagram of another cross-section of the cooling cylinder.

[0023] Figure 4 This is a schematic diagram of another cross-section of the cooling cylinder.

[0024] The markings in the diagram are: 1. Receiving hopper; 2. Lower section of cooling cylinder; 3. Water outlet of lower section of cooling cylinder; 4. Middle section of cooling cylinder; 5. Water outlet of middle section of cooling cylinder; 6. Water outlet of upper section of cooling cylinder; 7. Upper section of cooling cylinder; 8. Graphite furnace discharge port; 9. Water inlet of lower section of cooling cylinder; 10. Water inlet of middle section of cooling cylinder; 11. Water inlet of upper section of cooling cylinder; 12. Discharge port; 13. Cooling cylinder; 14. Protrusion; 15. Fin. Detailed Implementation

[0025] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0027] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0028] Please see Figure 1As shown, this utility model proposes a vertical graphite furnace cooling and discharging device, including a cooling cylinder 13 and a receiving hopper 1. The upper section 7 of the cooling cylinder is connected to the graphite furnace outlet 8, and the lower section 2 of the cooling cylinder is connected to the receiving hopper 1. A discharge port 12 is provided at the bottom of the receiving hopper 1, and multiple discharge ports 12 are located on both sides of the bottom of the receiving hopper 1. The receiving hopper 1 is circular and rotatable. High-temperature graphite material enters the cooling cylinder 13 from the graphite furnace outlet 8, is cooled and reduced in temperature within the cooling cylinder 13, falls into the receiving hopper 1, and is discharged from the discharge port 12 under the high-speed rotation of the receiving hopper 1.

[0029] like Figure 1 As shown, multiple cooling water circulation sections are provided on the side wall of the cooling cylinder 13. Specifically, multiple water inlets are located on one side of the cooling cylinder 13, and corresponding multiple water outlets are located on the other side. The height of the water inlets is lower than the height of the corresponding water outlets. The water inlets and outlets are connected by a spiral-shaped water flow channel. The circulating cooling water in the water flow channel cools the cooling cylinder 13. The multiple cooling water circulation sections increase the cooling rate of each part of the cooling cylinder 13. After passing through this cooling device, the material finally falls into the receiving hopper 1 at a safe temperature, thus being discharged.

[0030] like Figure 1 As shown, in one embodiment of this utility model, the cooling cylinder 13 has three cooling water circulation sections on its side wall, namely, the upper section 7, the middle section 4, and the lower section 2 of the cooling cylinder are respectively provided with water inlets and outlets, including the lower section water inlet 9 and the lower section water outlet 3, the middle section water inlet 10 and the middle section water outlet 5, and the upper section water inlet 11 and the upper section water outlet 6. Each water inlet and outlet is connected by a water flow channel, and the water flow channels are all spiral.

[0031] like Figures 1 to 4 As shown, the cross-section of the cooling cylinder 13 is polygonal. In some embodiments, the shape of the cross-section of the cooling cylinder 13 is, for example, any one of petal-shaped, serrated, or grid-shaped. By setting the cross-section of the cooling cylinder 13 to the above-mentioned shape, the closest distance between the material inside the cooling cylinder 13 and the inner wall of the cooling cylinder 13 (i.e., the edge of the polygon) can be reduced. Furthermore, the closest distance between the material at any position inside the cooling cylinder 13 and the inner wall of the cooling cylinder 13 does not exceed 1 / 3 of the maximum inner diameter of the cooling cylinder 13, which can increase the contact probability between the inner wall of the cooling cylinder 13 and the internal material, and shorten the cooling time of the material. In some embodiments, the closest distance between the material at any position inside the cooling cylinder 13 and the inner wall of the cooling cylinder 13 does not exceed, for example, 1 / 3, 1 / 4, 1 / 5, 1 / 6, etc., of the maximum inner diameter of the cooling cylinder 13.

[0032] In some embodiments, the closest distance between the material at any position inside the cooling cylinder 13 and the inner wall of the cooling cylinder 13 does not exceed 10cm. Specifically, taking a cooling cylinder 13 with a polygonal cross-section as an example, its maximum inner diameter can be set to less than 30cm. In this way, the distance between the material at any position inside the cooling cylinder 13 and the inner wall of the cooling cylinder will always be kept within 10cm, thereby effectively improving the heat transfer efficiency and ensuring the cooling effect of the material.

[0033] like Figure 1 and Figure 3 As shown, in one embodiment of this utility model, the inner wall of the cooling cylinder 13 may be provided with multiple protrusions 14 to enhance the heat transfer effect of the material and improve the cooling efficiency by increasing the contact probability between the cooling cylinder 13 and the material. The multiple protrusions 14 may be integrally formed with the cooling cylinder 13, and are evenly distributed along the inner wall of the cooling cylinder 13, with the number of protrusions 14 being, for example, 3-10. The closest distance between the material at any position inside the cooling cylinder 13 and the inner wall of the cooling cylinder 13 (including the protrusions 14) does not exceed 1 / 3 of the maximum inner diameter of the cooling cylinder 13.

[0034] like Figure 1 and Figure 3 , Figure 4 As shown, in another embodiment of this utility model, a plurality of fins 15 are provided on the inner wall of the cooling cylinder 13. This increases the contact probability between the cooling cylinder 13 and the material, thereby enhancing the heat transfer effect of the material and improving its cooling efficiency. The plurality of fins 15 are evenly arranged along the inner wall of the cooling cylinder 13, and the number of fins 15 is, for example, 3-12. The material of the fins 15 is, for example, graphite or metal. The closest distance between the material at any position inside the cooling cylinder 13 and the inner wall of the cooling cylinder 13 (including the fins 15) does not exceed 1 / 3 of the maximum inner diameter of the cooling cylinder 13.

[0035] The graphitized high-temperature material enters from the upper section 7 of the cooling cylinder and first passes through the upper part of the cooling cylinder 13. The cooling water circulation section cools the cooling cylinder 13. The high heat of the material comes into contact with the inside of the cooling cylinder 13, which can further improve the cooling effect and reduce the direct contact between the high heat of the material and the cooling water, thus preventing the cooling water from vaporizing and exploding.

[0036] like Figure 1 As shown, in one embodiment of the present invention, the cross-sectional area of ​​the cooling cylinder 13 remains constant from top to bottom. In another embodiment of the present invention, the cross-sectional area of ​​the cooling cylinder 13 increases from top to bottom. This conical design makes its bottom wider, effectively avoiding material blockage and thus improving production efficiency.

[0037] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model. As used herein and throughout the claims below, unless otherwise specified, "a" and "the" include plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, "in" means "in" and "on".

[0038] The above description of the embodiments shown in this utility model (including the content set forth in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments described herein, and such modifications will be within the spirit and scope of the utility model.

Claims

1. A vertical graphite furnace cooling and discharging device, comprising a cooling cylinder (13) and a receiving hopper (1), characterized in that, The upper section (7) of the cooling cylinder is connected to the graphite furnace outlet (8), the lower section (2) of the cooling cylinder is connected to the receiving hopper (1), the bottom end of the receiving hopper (1) is provided with an outlet (12), the cross-section of the cooling cylinder (13) is polygonal, and the closest distance between the material at any position inside the cooling cylinder (13) and the inner wall of the cooling cylinder (13) does not exceed 1 / 3 of the maximum inner diameter of the cooling cylinder (13).

2. The vertical graphite furnace cooling and discharging device according to claim 1, characterized in that, The cross-sectional shape of the cooling cylinder (13) can be any one of petal shape, sawtooth shape, or grid shape.

3. The vertical graphite furnace cooling and discharging device according to claim 1, characterized in that, The inner wall of the cooling cylinder (13) is provided with a plurality of protrusions (14), the number of which is 3-10.

4. The vertical graphite furnace cooling and discharging device according to claim 1, characterized in that, The inner wall of the cooling cylinder (13) is provided with multiple fins (15), and the number of fins (15) is 3-12.

5. A vertical graphite furnace cooling and discharging device according to claim 1, characterized in that, The cross-sectional area of ​​the cooling cylinder (13) remains constant or increases from top to bottom.

6. A vertical graphite furnace cooling and discharging device according to claim 1, characterized in that, Multiple water inlets are provided on one side wall of the cooling cylinder (13), and multiple water outlets are provided on the other side wall of the cooling cylinder (13). The water inlets and the water outlets are connected by a water flow channel, which is spiral in shape.

7. A vertical graphite furnace cooling and discharging device according to claim 4, characterized in that, The fins (15) are made of graphite or metal.

8. A vertical graphite furnace cooling and discharging device according to claim 1, characterized in that, The closest distance between the material at any position inside the cooling cylinder (13) and the inner wall of the cooling cylinder (13) shall not exceed 10cm.

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