Graphite electrode preheating device

Abstract

The utility model belongs to the technical field of graphite electrode processing, and particularly relates to a graphite electrode preheating device which comprises an outer heating box, an inner heating cylinder is arranged in the outer heating box, a first preheating bin is formed between the outer heating box and the inner heating cylinder, an outer mounting cylinder is mounted in the first preheating bin, and a second mounting cylinder is mounted in the outer mounting cylinder. An inner mounting cylinder is arranged in the outer mounting cylinder, the inner mounting cylinder is located on the outer side of the inner heating cylinder, the outer mounting cylinder is connected with the inner wall of the outer heating box through a plurality of connecting plates, and the inner mounting cylinder is connected with the outer portion of the inner heating cylinder through a plurality of connecting plates; on one hand, the waste of heat in the working process of the outer heating box and the inner heating cylinder can be reduced, on the other hand, the preheating efficiency of the graphite electrode can be improved, the overall preheating time of the graphite electrode can be shortened, and in addition, the temperature in the whole first preheating bin can be assisted to be more stable and uniform; and uniform preheating of the graphite electrode is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite electrode processing, and in particular relates to a graphite electrode preheating device. Background Art

[0002] As a conductor that releases electric energy for heating by electric arc, graphite electrode is often used as a binder in industry, and petroleum coke and needle coke are used as the main raw materials. It is made through burning and pressing, batching and roasting, kneading, graphitization and machining. It has the advantages of fast processing speed, good machinability, light weight and good thermal stability. In the impregnation process of graphite electrode processing, it is necessary to go through the steps of roasting the blank, surface cleaning, preheating and loading into the impregnation tank. When preheating the graphite electrode, due to the high internal temperature of the preheating equipment, the preheating equipment will exchange heat with the external environment, resulting in a substantial increase in the ambient temperature around the preheating bin. Due to the large external environment space and the fast air flow, heat loss occurs. At the same time, when the current graphite electrode is preheated, the surface temperature is at room temperature, resulting in low preheating efficiency. Utility Model Content

[0003] The utility model provides a graphite electrode preheating device, which has the characteristics of reducing the heat waste of an external heating box and an internal heating cylinder during operation, and helping to improve the preheating efficiency of the graphite electrode and shortening the overall preheating time of the graphite electrode.

[0004] The utility model provides the following technical solutions: a graphite electrode preheating device, comprising an external heating box, an internal heating cylinder is arranged inside the external heating box, a first preheating chamber is formed between the external heating box and the internal heating cylinder, an external mounting cylinder is installed inside the first preheating chamber, an internal mounting cylinder is arranged inside the external mounting cylinder, and the internal mounting cylinder is located outside the internal heating cylinder, the external mounting cylinder and the inner wall of the external heating box, and the internal mounting cylinder and the outside of the internal heating cylinder are connected by a plurality of connecting plates, and the connecting plates are connected to the inner wall of the external heating box and the outer rotation of the internal heating cylinder. The outer wall of the outer heating box is evenly and fixedly connected with a plurality of first limit support seats, the outer walls of the inner mounting tube and the outer mounting tube are fixedly connected with a plurality of dial plates, an outer insulation tube is provided on the outside of the outer heating box, a second preheating chamber is formed between the outer heating box and the outer insulation tube, and a plurality of second limit support seats are fixedly connected inside the second preheating chamber, one side of the outer heating box is rotatably connected to the inner wall of the outer insulation tube, a rotatable mounting seat is installed on one side of the end of the outer mounting tube and the inner mounting tube, and the rotatable mounting seat is rotatably connected to the inner wall of the outer heating box.

[0005] Wherein, the outer part of one end of the inner heating cylinder is rotatably connected to a rotatable connecting seat, and the inner side of the rotatable mounting seat is fixedly connected to the outer part of the rotatable connecting seat.

[0006] Among them, a rotating plate is provided on one side of the outer insulation tube, and a connecting rod is symmetrically fixedly connected to one side of the rotating plate. One end of the connecting rod passes through one side of the outer insulation tube and is fixedly connected to one side of the rotating mounting seat. A sealing ring is rotatably connected between one side of the rotating plate and the outside of the connecting rod.

[0007] Among them, a driving motor is provided on one side of the rotating plate, and the output end of the driving motor is fixedly connected to the rotating plate, the outside of the outer insulation cylinder is fixedly connected to a protective box, and the rotating plate and the driving motor are both located inside the protective box, and one side of the driving motor is fixedly connected to the inside of the protective box.

[0008] Wherein, a support frame is fixedly connected to the bottom of the outer heat-insulating cylinder, and a sealing door is hinged on one side of the outer heat-insulating cylinder.

[0009] Wherein, a heat conducting plate is embedded on the outer side of the dial plate.

[0010] The beneficial effects of the utility model are as follows: under the action of the outer insulation tube, on the one hand, the external heating box can be isolated from the external environment, and on the other hand, the high temperature environment of the external heating box when working can be used to heat the air between the outer insulation tube and the external heating box, so that the space between the external heating box and the outer insulation tube is in a relatively high temperature environment, and at the same time, the next batch of graphite electrodes that need to be preheated can be preheated, and at the same time, the heat generated by the external heating box and the inner heating tube during the working process can be reused, which on the one hand can reduce the waste of heat of the external heating box and the inner heating tube during the working process, and on the other hand can help to improve the preheating efficiency of the graphite electrode and help to shorten the overall preheating time of the graphite electrode. In addition, under the action of the dial plate, the air in the inner cavity of the first preheating chamber can be dialed, so that the air in the inner cavity of the first preheating chamber is in a state of dynamic flow, which helps to assist the temperature inside the entire first preheating chamber to be more stable and uniform, so that the graphite electrode is in a high temperature environment with relatively balanced temperature during preheating, which helps to preheat the graphite electrode more evenly.

[0011] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0013] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0014] Figure 3 For this utility model Figure 1 A magnified diagram of the details of part A in the middle.

[0015] In the figure: 1. external heating box; 11. internal heating cylinder; 2. first preheating chamber; 3. external mounting cylinder; 31. internal mounting cylinder; 32. connecting plate; 33. first limit support seat; 34. rotating mounting seat; 341. rotating connecting seat; 35. connecting rod; 36. rotating plate; 361. sealing ring; 4. dial plate; 41. heat transfer plate; 5. external insulation cylinder; 51. second preheating chamber; 52. second limit support seat; 53. supporting frame; 54. sealing door; 6. driving motor; 61. protective box. DETAILED DESCRIPTION

[0016] See also Figure 1-Figure 3 The utility model provides the following technical solutions: a graphite electrode preheating device, comprising an external heating box 1, an internal heating cylinder 11 is arranged inside the external heating box 1, a first preheating chamber 2 is formed between the external heating box 1 and the internal heating cylinder 11, an external mounting cylinder 3 is installed inside the first preheating chamber 2, an internal mounting cylinder 31 is arranged inside the external mounting cylinder 3, and the internal mounting cylinder 31 is located outside the internal heating cylinder 11, the external mounting cylinder 3 and the inner wall of the external heating box 1, and the internal mounting cylinder 31 and the outside of the internal heating cylinder 11 are connected by a plurality of connecting plates 32, and the connecting plates 32 are connected to the inner wall of the external heating box 1 and the outside of the internal heating cylinder 11. Rotating connection, a plurality of first limit support seats 33 are evenly and fixedly connected on the inner wall of the external heating box 1, a plurality of dial plates 4 are fixedly connected on the outer walls of the inner mounting tube 31 and the outer mounting tube 3, an outer insulation tube 5 is provided on the outside of the external heating box 1, a second preheating chamber 51 is formed between the external heating box 1 and the external insulation tube 5, a plurality of second limit support seats 52 are fixedly connected inside the second preheating chamber 51, one side of the external heating box 1 is rotationally connected to the inner wall of the outer insulation tube 5, a rotating mounting seat 34 is installed on one side of the end of the external mounting tube 3 and the inner mounting tube 31, and the rotating mounting seat 34 is rotationally connected to the inner wall of the external heating box 1.

[0017] In the present embodiment: the external heating box 1 and the internal heating tube 11 are both heating elements in the entire preheating device, the first preheating chamber 2 is the preheating area in the entire preheating device, the external mounting tube 3 located in the first preheating chamber 2 cooperates with the internal mounting tube 31 to form an installation assembly for installing a plurality of first limit support seats 33, wherein the first limit support seat 33 is a space for placing the graphite electrode during preheating, and the rotating mounting seat 34 located on one side of the external mounting tube 3 is used to provide a connecting carrier for the installation of the external mounting tube 3 and the internal mounting tube 31 inside the external heating box 1, and the external insulation tube 5 located on the outside of the external heating box 1 is used to isolate the external heating box 1 from the external environment on the one hand, and on the other hand, it can utilize the high temperature environment of the external heating box 1 when it is working to heat the air between the external insulation tube 5 and the external heating box 1, so that the space between the external heating box 1 and the external insulation tube 5 is in a relatively high temperature environment, and at the same time, it can preheat the next batch of graphite electrodes that need to be preheated, and at the same time The heat generated by the external heating box 1 and the internal heating cylinder 11 during the working process is reused. On the one hand, it can reduce the heat waste of the external heating box 1 and the internal heating cylinder 11 during the working process. On the other hand, it can help to improve the preheating efficiency of the graphite electrode and help to shorten the overall preheating time of the graphite electrode. The paddle 4 located outside the outer mounting cylinder 3 and the inner mounting cylinder 31 can paddle the air in the inner cavity of the first preheating chamber 2 during the rotation of the outer mounting cylinder 3 and the inner mounting cylinder 31, so that the air in the inner cavity of the first preheating chamber 2 is in a state of dynamic flow, which helps to assist the temperature inside the entire first preheating chamber 2 to be more stable and uniform, so that the graphite electrode is in a high temperature environment with relatively uniform temperature during preheating, which helps to preheat the graphite electrode more evenly. In addition, the number of the second limit support seats 52 is consistent with the number of the first limit support seats 33, and the second limit support seats 52 are used to provide a placement space for the next batch of graphite electrodes to be preheated.

[0018] The outer part of one end of the inner heating cylinder 11 is rotatably connected to a rotatable connection seat 341 , and the inner side of the rotatable mounting seat 34 is fixedly connected to the outer part of the rotatable connection seat 341 ; wherein the rotatable connection seat 341 is used to provide a carrier for the rotatable mounting seat 34 to connect.

[0019] A rotating plate 36 is provided on one side of the outer heat-insulating tube 5, and a connecting rod 35 is symmetrically fixedly connected to one side of the rotating plate 36. One end of the connecting rod 35 passes through one side of the outer heat-insulating tube 5 and is fixedly connected to one side of the rotating mounting seat 34. A sealing ring 361 is rotatably connected between one side of the rotating plate 36 and the outside of the connecting rod 35. A driving motor 6 is provided on one side of the rotating plate 36, and the output end of the driving motor 6 is fixedly connected to the rotating plate 36. A protective box 61 is fixedly connected to the outside of the outer heat-insulating tube 5, and the rotating plate 36 and the driving motor 6 are both located inside the protective box 61. One side of the driving motor 6 is fixedly connected to the inside of the protective box 61. During the operation of the entire preheating device, by starting the driving motor 6, the driving motor 6 can drive the rotating plate 36 to rotate, and during the rotation of the rotating plate 36, it can drive the connecting rod 35 to rotate synchronously, and the rotation of the connecting rod 35 drives the outer mounting tube 3 and the inner mounting tube 31 to rotate, thereby driving the rotation of the dial plate 4, and during the rotation of the dial plate 4, the air inside the first preheating chamber 2 is dialed, wherein a clearance groove for cooperating with the rotation of the connecting rod 35 is opened on one side of the external heating box 1, and the sealing ring 361 is used to seal the space between the rotating plate 36 and the clearance groove.

[0020] A support frame 53 is fixedly connected to the bottom of the outer insulation tube 5, and a sealing door 54 is hinged on one side of the outer insulation tube 5; wherein the support frame 53 is a supporting member in the entire device, and when the graphite electrode is preheated, the internal graphite electrode can be taken out through the sealing door 54.

[0021] A heat conducting plate 41 is embedded on the outer side of the dial plate 4; the heat conducting plate 41 is used to conduct heat in the first preheating chamber 2 during the rotation process, so as to assist in balancing the temperature of various areas inside the first preheating chamber 2.

[0022] The working principle and use process of the utility model are as follows: when the graphite electrode needs to be preheated, the graphite electrode to be preheated is first placed inside the first limit support seat 33, and then the next batch of graphite electrodes to be preheated is placed inside the second limit support seat 52, and then the sealing door 54 is closed and the driving motor 6 and the external heating box 1 and the internal heating cylinder 11 are turned on. At this time, the external heating box 1 and the internal heating cylinder 11 heat up the ambient temperature inside the first preheating chamber 2 and preheat the graphite electrode. At the same time, the driving motor 6 can drive the rotating plate 36 to The rotating plate 36 rotates, and during the rotation of the rotating plate 36, the connecting rod 35 can be driven to rotate synchronously, and the rotation of the connecting rod 35 drives the outer mounting tube 3 and the inner mounting tube 31 to rotate, thereby driving the rotation of the dial plate 4, and during the rotation of the dial plate 4, the air inside the first preheating chamber 2 is dialed. When the graphite electrode is preheated, the internal graphite electrode can be taken out through the sealing door 54, and after the graphite electrode in the second limiting support seat 52 is placed on the first limiting support seat 33, a new batch of graphite electrodes can be placed on the second limiting support seat 52.

Claims

1. A graphite electrode preheating device, comprising an external heating box (1), characterized in that: The outer heating box (1) is provided with an inner heating cylinder (11) inside, and a first preheating chamber (2) is formed between the outer heating box (1) and the inner heating cylinder (11), and an outer mounting cylinder (3) is installed inside the first preheating chamber (2), and an inner mounting cylinder (31) is installed inside the outer mounting cylinder (3), and the inner mounting cylinder (31) is located outside the inner heating cylinder (11), and the outer mounting cylinder (3) and the outer wall of the outer heating box (1) are connected by a plurality of connecting plates (32), and the connecting plates (32) are rotatably connected to the inner wall of the outer heating box (1) and the outer wall of the inner heating cylinder (11), and the inner wall of the outer heating box (1) is connected to the inner wall of the inner heating cylinder (11). A plurality of first limit support seats (33) are evenly and fixedly connected on the upper surface; a plurality of shift plates (4) are fixedly connected on the outer walls of the inner mounting tube (31) and the outer mounting tube (3); an outer heat preservation tube (5) is arranged outside the outer heating box (1); a second preheating chamber (51) is formed between the outer heating box (1) and the outer heat preservation tube (5); a plurality of second limit support seats (52) are fixedly connected inside the second preheating chamber (51); one side of the outer heating box (1) is rotatably connected to the inner wall of the outer heat preservation tube (5); a rotatable mounting seat (34) is installed on one side of the end of the outer mounting tube (3) and the inner mounting tube (31); and the rotatable mounting seat (34) is rotatably connected to the inner wall of the outer heating box (1).

2. A graphite electrode preheating device according to claim 1, characterized in that: The outside of one end of the inner heating cylinder (11) is rotatably connected to a rotatable connection seat (341), and the inner side of the rotatable mounting seat (34) is fixedly connected to the outside of the rotatable connection seat (341).

3. A graphite electrode preheating device according to claim 1, characterized in that: A rotating plate (36) is provided on one side of the outer heat-insulating cylinder (5), and a connecting rod (35) is symmetrically fixedly connected to one side of the rotating plate (36); one end of the connecting rod (35) passes through one side of the outer heat-insulating cylinder (5) and is fixedly connected to one side of the rotating mounting seat (34); a sealing ring (361) is rotatably connected between one side of the rotating plate (36) and the outside of the connecting rod (35).

4. A graphite electrode preheating device according to claim 3, characterized in that: A driving motor (6) is provided on one side of the rotating plate (36), and an output end of the driving motor (6) is fixedly connected to the rotating plate (36); a protective box (61) is fixedly connected to the outside of the outer heat-insulating cylinder (5), and the rotating plate (36) and the driving motor (6) are both located inside the protective box (61), and one side of the driving motor (6) is fixedly connected to the inside of the protective box (61).

5. A graphite electrode preheating device according to claim 1, characterized in that: A support frame (53) is fixedly connected to the bottom of the outer heat-insulating cylinder (5), and a sealing door (54) is hingedly connected to one side of the outer heat-insulating cylinder (5).

6. A graphite electrode preheating device according to claim 1, characterized in that: A heat conducting plate (41) is embedded on the outer side of the dial plate (4).

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