Graphite electrode cover plate of smelting furnace

Abstract

The utility model provides a graphite electrode cover plate of a smelting furnace, belongs to the technical field of smelting equipment, and aims to solve the problems that when an existing cover plate is replaced, a worker needs to pull out a connecting pin and then hoist the cover plate by using hoisting equipment, and the operation steps are more. Comprising a furnace cover connecting frame, a cover plate main body, a fixed hoisting ring, a sliding hoisting ring, a cover plate protection mechanism and a cover plate mounting mechanism, the cover plate main body is arranged in front of the furnace cover connecting frame; two groups of connecting holes are arranged, the two groups of connecting holes are of round hole structures, the two groups of connecting holes are respectively formed in the front side and the rear side of the cover plate main body, the front-end connecting hole is externally connected with an exhaust fan, and an electrode is inserted into the rear-end connecting hole; the fixed hoisting ring is welded to the front end of the upper portion of the cover plate body. The sliding hoisting ring is slidably connected to the rear end of the interior of the cover plate body. The cover plate protection mechanism is arranged in the cover plate main body; and the cover plate mounting mechanism is arranged at the rear end of the cover plate main body, so that the whole cover plate is convenient to dismount, and the mounting and dismounting efficiency of the cover plate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of smelting equipment, and more specifically, particularly relates to a graphite electrode cover plate for a smelting furnace. Background Art

[0002] During the production process of the side-blown smelting furnace, in order to allow the copper-containing melt and slag to fully settle and separate, a depletion area is generally provided at the end of the furnace body. Two graphite electrodes are arranged in the depletion area to supplement heat to the molten pool, maintain the temperature of the melt and slag, reduce the copper content in the slag, and improve the copper recovery rate. A cover plate is provided on the upper part of the depletion area. The industry generally uses carbon steel to make the cover plate. The existing depletion area cover plate is generally made of carbon steel. A connecting pin is provided at the rear end of the cover plate. The connecting pin is inserted into the support to facilitate the opening and closing of the cover plate.

[0003] The existing application number is: CN202121410743.8. The utility model discloses a large side-blown smelting furnace, including a furnace body, a flue and a feeding unit; the furnace body is a single-chamber structure, including a furnace cylinder, a furnace body, a furnace chamber and a furnace top from bottom to top, and two slag partition walls are vertically arranged between the two side walls inside the furnace body. The furnace body is divided into a depletion zone and two reaction zones by the two slag partition walls. The depletion zone is located in the furnace body between the two slag partition walls, and the two reaction zones are located in the furnace body on the relatively outer sides of the two slag partition walls; the utility model flue gas outlet is located above the depletion zone, and the smelting flue gas in the furnace is divided into two parts. The flue gas channel in the furnace is changed from one to two, and the flue gas flow rate is also reduced accordingly, breaking through the limitation of the cross-sectional area of ​​the flue gas channel in the existing structure side-blown smelting furnace. The utility model has a depletion zone arranged inside the furnace body, which divides a large side-blown smelting furnace into two small and medium-sized side-blown smelting furnaces, which is smaller and easier to control.

[0004] Based on the above, the existing depletion zone cover is easily damaged when used for a long time because the cover is in a high temperature state for a long time. The cover needs to be replaced after a period of use. When replacing the existing cover, workers need to pull out the connecting pins first, and then use lifting equipment to lift the cover. There are many operating steps, which affects the installation and removal efficiency of the cover. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a graphite electrode cover plate for a smelting furnace to solve the problem that the existing depleted zone cover plate is easily damaged when used for a long time because the cover plate is in a high temperature state for a long time, and the cover plate needs to be replaced after a period of use. When replacing the existing cover plate, the worker needs to pull out the connecting pin first, and then use the lifting equipment to lift the cover plate. There are many operating steps, which affects the installation and removal efficiency of the cover plate.

[0006] The purpose and effect of the graphite electrode cover plate for a smelting furnace of the utility model are achieved by the following specific technical means:

[0007] A graphite electrode cover plate for a smelting furnace, comprising a furnace cover connecting frame, a cover plate main body, a connecting hole, a fixed lifting ring, a sliding lifting ring, a cover plate protection mechanism and a cover plate installation mechanism;

[0008] The cover plate body is arranged in front of the furnace cover connecting frame;

[0009] There are two groups of connection holes, both of which are circular hole structures. The two groups of connection holes are respectively opened on the front and rear sides of the cover body. The front connection hole is externally connected to the exhaust fan, and a stainless steel sleeve is arranged in the rear connection hole. The inner diameter of the stainless steel sleeve matches the outer diameter of the electrode, and the electrode is inserted at the rear.

[0010] The fixed lifting ring is welded to the upper front end of the cover plate body;

[0011] The sliding hoisting ring is slidably connected to the inner rear end of the cover plate body;

[0012] The cover plate protection mechanism is arranged inside the cover plate body;

[0013] The cover plate installation mechanism is arranged at the rear end of the cover plate body.

[0014] Further, the cover plate protection mechanism includes: a fire-resistant protection layer;

[0015] The fire-resistant protective layer is cast at the lower end of the cover plate body, and the fire-resistant protective layer is an arc-shaped refractory material structure.

[0016] Furthermore, the cover plate protection mechanism also includes: a weight reduction groove;

[0017] The weight-reducing groove is an arc-shaped groove structure, which is arranged inside the cover plate body and is filled with an inert gas.

[0018] Furthermore, the cover plate installation mechanism includes: an installation connector, an installation trigger and an installation limiter;

[0019] There are two groups of mounting connectors, both of which are fixedly connected to the left and right sides of the rear end of the cover plate body;

[0020] The installation trigger is a threaded sleeve structure, and thread structures with different rotation directions are arranged on the left and right sides of the installation trigger. The installation trigger is rotatably connected to the inner sides of the two sets of installation connectors.

[0021] There are two groups of installation limit members, both of which are fixedly connected to the left and right sides of the rear end of the cover plate body, and both of which are provided with polygonal slide groove structures.

[0022] Furthermore, the cover plate installation mechanism also includes: an installation connecting screw, an installation limiting slider and an installation connecting shaft;

[0023] The mounting connection screws are provided in two groups, and the two groups of mounting connection screws are respectively threadedly connected to the left and right sides of the mounting trigger member;

[0024] The installation limit sliders are provided with two groups in total, and the two groups of installation limit sliders are respectively fixedly connected to the outside of the installation connection screw rod, and the two groups of installation limit sliders are both slidably connected to the inside of the slide groove of the installation limit member;

[0025] There are two groups of installation connection shafts, which are rotatably connected to the outer sides of the installation limit sliders respectively, and are both plugged into the furnace cover connection frame.

[0026] Furthermore, the cover plate installation mechanism also includes: installing a trigger rope, installing a guide wheel, and installing a reset spring;

[0027] The installation trigger rope is wound around the outer periphery of the installation trigger member, and the front end of the installation trigger rope is fixedly connected to the lower end of the sliding lifting ring;

[0028] The installation guide wheel is rotatably connected to the lower rear end of the cover plate body, and the installation trigger rope is wound around the outer periphery of the installation guide wheel;

[0029] The installation reset springs are arranged in two groups, both of which are spiral spring structures, and the two groups of installation reset springs are respectively fixedly connected to the outer periphery of the installation trigger member, and one end of the two groups of installation reset springs is fixedly connected to the installation connector.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] The utility model arranges the cover plate protection mechanism, when the cover plate body is placed above the depleted zone, the refractory protection layer blocks the arc generated by the graphite electrode, and at the same time the refractory protection layer plays a role of high temperature resistance and insulation, the weight reduction groove reduces the dead weight of the entire cover plate, and facilitates the replacement of the entire cover plate, and at the same time the exhaust fan can draw away the high-temperature gas in the depleted zone through the connecting air holes, thereby reducing the temperature of the cover plate and extending the service life of the cover plate body.

[0032] The utility model sets the installation trigger member, and when the cover plate main body needs to be disassembled, the lifting equipment is used to pull the sliding lifting ring upwards, and the sliding lifting ring moves upward to pull the installation trigger rope, and the installation trigger rope is guided by the installation guide wheel. At this time, the installation trigger rope drives the installation trigger member to rotate, and the rotation of the installation trigger member drives the two sets of installation connecting screws to move inwards, and the installation connecting screws move inwards and drive the installation connecting shaft to move inwards. The installation connecting shaft moves inwards and disengages from the furnace cover connecting frame, so that the workers only need to connect the lifting equipment with the sliding lifting ring, which is convenient for the workers' operation, reduces the operation steps of cover plate disassembly, facilitates the disassembly of the entire cover plate, and improves the installation and disassembly efficiency of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0034] Figure 2 It is a schematic diagram of the fire-resistant protective layer structure of the utility model.

[0035] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0036] Figure 4 It is a structural schematic diagram of the cover plate installation mechanism of the utility model.

[0037] Figure 5 It is a schematic diagram of the installation trigger structure of the utility model.

[0038] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0039] 1. Furnace cover connecting frame; 101. Refractory protective layer; 102. Weight reduction groove; 2. Cover body; 3. Connecting air holes; 4. Fixed lifting ring; 5. Sliding lifting ring; 501. Install connecting parts; 502. Install trigger parts; 503. Install limit parts; 504. Install connecting screws; 505. Install limit sliders; 506. Install connecting shafts; 507. Install trigger ropes; 508. Install guide wheels; 509. Install reset springs. DETAILED DESCRIPTION

[0040] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0041] Embodiment 1:

[0042] As attached Figure 1 To Attachment Figure 3 As shown:

[0043] The utility model provides a graphite electrode cover plate for a smelting furnace, comprising a furnace cover connecting frame 1, a cover plate body 2, connecting air holes 3, a fixed lifting ring 4, a sliding lifting ring 5 and a cover plate protection mechanism;

[0044] The cover plate body 2 is arranged in front of the furnace cover connecting frame 1;

[0045] There are two groups of connecting air holes 3, both of which are circular hole structures. The two groups of connecting holes 3 are respectively opened on the front and rear sides of the cover body 2. The front connecting hole 3 is externally connected to the exhaust fan, and a stainless steel sleeve is arranged in the rear connecting hole 3. The inner diameter of the stainless steel sleeve matches the outer diameter of the electrode, and the electrode is inserted at the back.

[0046] The fixed lifting ring 4 is welded to the upper front end of the cover plate body 2;

[0047] The sliding hoisting ring 5 is slidably connected to the inner rear end of the cover plate body 2;

[0048] The cover plate protection mechanism is arranged inside the cover plate body 2 .

[0049] The cover plate protection mechanism includes: a fire-resistant protection layer 101 and a weight-reducing groove 102;

[0050] The fire-resistant protective layer 101 is cast at the lower end of the cover plate body 2, and the fire-resistant protective layer 101 is an arc-shaped refractory material structure;

[0051] The weight-reducing groove 102 is an arc-shaped groove structure. The weight-reducing groove 102 is opened inside the cover plate body 2 . The inside of the weight-reducing groove 102 is filled with an inert gas.

[0052] During use, when the cover plate body 2 is placed above the depleted zone, the refractory protective layer 101 blocks the arc generated by the graphite electrode. At the same time, the refractory protective layer 101 plays a role of high temperature resistance and insulation, thereby extending the service life of the cover plate body 2. The weight-reducing groove 102 reduces the dead weight of the entire cover plate, making it convenient to replace the entire cover plate.

[0053] Embodiment 2:

[0054] The utility model provides a graphite electrode cover plate for a smelting furnace. Based on the first embodiment, Figures 1 to 5 As shown, a cover plate installation mechanism is also included, and the cover plate installation mechanism is arranged at the rear end of the cover plate body 2.

[0055] The cover plate installation mechanism includes: an installation connection member 501, an installation trigger member 502, an installation limit member 503, an installation connection screw 504, an installation limit slider 505, an installation connection shaft 506, an installation trigger rope 507, an installation guide wheel 508 and an installation reset spring 509;

[0056] There are two sets of mounting connectors 501, and both sets of mounting connectors 501 are fixedly connected to the left and right sides of the rear end of the cover body 2;

[0057] The installation trigger member 502 is a threaded sleeve structure, and the left and right sides of the installation trigger member 502 are provided with thread structures of different rotation directions. The installation trigger member 502 is rotatably connected to the inner sides of the two sets of installation connectors 501;

[0058] There are two sets of installation limit members 503, both of which are fixedly connected to the left and right sides of the rear end of the cover body 2, and both of which are provided with polygonal slide groove structures;

[0059] There are two sets of mounting connection screws 504, which are respectively threadedly connected to the left and right sides of the mounting trigger member 502;

[0060] There are two sets of installation limit sliders 505, which are respectively fixedly connected to the outside of the installation connection screw rod 504, and the two sets of installation limit sliders 505 are slidably connected to the inside of the slide groove of the installation limit member 503;

[0061] There are two sets of mounting connecting shafts 506, which are respectively rotatably connected to the outer sides of the mounting limit sliders 505, and the two sets of mounting connecting shafts 506 are plugged into the furnace cover connecting frame 1;

[0062] The installation trigger rope 507 is wound around the outer periphery of the installation trigger member 502, and the front end of the installation trigger rope 507 is fixedly connected to the lower end of the sliding lifting ring 5;

[0063] The installation guide wheel 508 is rotatably connected to the lower rear end of the cover plate body 2, and the installation trigger rope 507 is wound around the outer periphery of the installation guide wheel 508;

[0064] There are two groups of installation reset springs 509, both of which are spiral spring structures. The two groups of installation reset springs 509 are respectively fixedly connected to the outer periphery of the installation trigger member 502, and one end of the two groups of installation reset springs 509 is fixedly connected to the installation connector 501.

[0065] During use, when the cover body 2 needs to be disassembled, the lifting equipment is used to pull the sliding lifting ring 5 upwards. The sliding lifting ring 5 moves upward to pull the installation trigger rope 507. The installation trigger rope 507 is guided by the installation guide wheel 508. At this time, the installation trigger rope 507 drives the installation trigger member 502 to rotate. The rotation of the installation trigger member 502 drives the two sets of installation connecting screws 504 to move inward. The installation connecting screws 504 move inward and drive the installation limit slider 505 to move inward. The installation limit slider 505 moves inward and drives the installation connecting shaft 506 to move inward. The installation connecting shaft 506 moves inward and disengages from the furnace cover connecting frame 1, which facilitates the disassembly of the entire cover.

Claims

1. A graphite electrode cover plate for a smelting furnace, comprising a furnace cover connecting frame (1), a cover plate body (2), a connecting hole (3), a fixed lifting ring (4), a sliding lifting ring (5), a cover plate protection mechanism and a cover plate installation mechanism; characterized in that: The cover plate body (2) is arranged in front of the furnace cover connecting frame (1); two groups of connection holes (3) are arranged in total, both groups of connection holes (3) are circular hole structures, and the two groups of connection holes (3) are respectively opened on the front and rear sides of the cover plate body (2), the front connection hole (3) is externally connected to the exhaust fan, and the rear connection hole is inserted into the electrode; the fixed lifting ring (4) is welded to the upper front end of the cover plate body (2); the sliding lifting ring (5) is slidably connected to the inner rear end of the cover plate body (2); the cover plate protection mechanism is arranged inside the cover plate body (2); and the cover plate installation mechanism is arranged at the rear end of the cover plate body (2).

2. A graphite electrode cover plate for a smelting furnace as claimed in claim 1, characterized in that: The cover plate protection mechanism comprises: a fire-resistant protection layer (101); the fire-resistant protection layer (101) is cast on the lower end of the cover plate body (2); the fire-resistant protection layer (101) is an arc-shaped refractory material structure.

3. A graphite electrode cover plate for a smelting furnace as claimed in claim 1, characterized in that: The cover plate protection mechanism further comprises: a weight-reducing groove (102); the weight-reducing groove (102) is an arc-shaped groove structure; the weight-reducing groove (102) is arranged inside the cover plate body (2); and the inside of the weight-reducing groove (102) is filled with an inert gas.

4. A graphite electrode cover plate for a smelting furnace as claimed in claim 1, characterized in that: The cover plate mounting mechanism comprises: a mounting connection piece (501), a mounting trigger piece (502) and a mounting limit piece (503); the mounting connection piece (501) is provided in two groups, and the two groups of mounting connection pieces (501) are fixedly connected to the left and right sides of the rear end of the cover plate body (2); the mounting trigger piece (502) is a threaded sleeve structure, and the left and right sides of the mounting trigger piece (502) are provided with thread structures of different rotation directions, and the mounting trigger piece (502) is rotatably connected to the inner sides of the two groups of mounting connection pieces (501); the mounting limit piece (503) is provided in two groups, and the two groups of mounting limit pieces (503) are fixedly connected to the left and right sides of the rear end of the cover plate body (2), and the two groups of mounting limit pieces (503) are provided with polygonal sliding groove structures.

5. A graphite electrode cover plate for a smelting furnace as claimed in claim 4, characterized in that: The cover plate mounting mechanism further comprises: an installation connection screw rod (504), an installation limit slider (505) and an installation connection shaft (506); the installation connection screw rod (504) is provided in two groups, and the two groups of installation connection screw rods (504) are respectively threadedly connected to the left and right sides of the installation trigger member (502); the installation limit slider (505) is provided in two groups, and the two groups of installation limit sliders (505) are respectively fixedly connected to the outside of the installation connection screw rod (504), and the two groups of installation limit sliders (505) are both slidably connected to the inside of the slide groove of the installation limit member (503); the installation connection shaft (506) is provided in two groups, and the two groups of installation connection shafts (506) are respectively rotatably connected to the outside of the installation limit slider (505), and the two groups of installation connection shafts (506) are both plugged into the furnace cover connection frame (1).

6. A graphite electrode cover plate for a smelting furnace as claimed in claim 5, characterized in that: The cover plate installation mechanism further comprises: an installation trigger rope (507), an installation guide wheel (508) and an installation reset spring (509); the installation trigger rope (507) is wound around the outer periphery of the installation trigger member (502), and the front end of the installation trigger rope (507) is fixedly connected to the lower end of the sliding hoisting ring (5); the installation guide wheel (508) is rotatably connected to the lower rear end of the cover plate body (2), and the installation trigger rope (507) is wound around the outer periphery of the installation guide wheel (508); two groups of the installation reset springs (509) are provided, both of which are volute spring structures, and the two groups of the installation reset springs (509) are respectively fixedly connected to the outer periphery of the installation trigger member (502), and one end of the two groups of the installation reset springs (509) is fixedly connected to the installation connection member (501).

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