CN218973189U

CN218973189U - Charging system of electric arc furnace

Info

Publication number: CN218973189U
Application number: CN202223185001.7U
Authority: CN
Inventors: 付崇春; 高延群; 王伟; 李志海; 肖海玲; 徐海涛; 武志鹏; 张殿刚
Original assignee: Mine Machine Manufacture Factory Of Anshan Steel And Iron Corp
Current assignee: Mine Machine Manufacture Factory Of Anshan Steel And Iron Corp
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-05
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to an electric arc furnace charging system, comprising: the electric arc furnace comprises an electric arc furnace body and a dome-shaped furnace cover arranged at the upper part of the electric arc furnace body, an electrode is arranged in the middle of the furnace cover, a feed inlet is arranged on the furnace cover at one side of the electrode, and a feed bushing is sleeved on the inner wall of the feed inlet; the feeding frame comprises a feeding hopper, a frame body and a base which are arranged from top to bottom, and an electric gate valve is arranged at the neck of the feeding hopper and used for controlling the opening and closing of the blanking of the feeding hopper; the feeding end of the feeding hopper is connected with the feeding port through a chute. The utility model has the advantages that: simple structure, convenient feeding operation, reduced labor intensity, improved molten steel quality, reduced cost, and reduced investment by using original factory buildings and equipment.

Description

Charging system of electric arc furnace

Technical Field

The utility model belongs to the technical field of casting equipment, and particularly relates to an electric arc furnace charging system.

Background

When the old foundry uses more than 10 tons of electric arc furnace to smelt high alloy molten steel, 300-600 kg of various alloys are added per ton of molten steel at the end of oxidation, and usually, an artificial spade is added through a furnace door, and then a furnace cover is removed from the upper part and turned over by a crane hopper.

Adding an artificial spade: the labor intensity of workers is high, and the high temperature and the high intensity are harmful to the health of the workers. Turning in a crane hopper: and (1) the furnace cover is complicated to remove and operate, and the heat loss is large. (2) The alloy materials are gathered in the middle due to the simultaneous turning, the alloy materials at the bottom remain, the components of the furnace and the next furnace are unstable, and waste products are easy to generate.

Disclosure of Invention

The utility model aims to provide an electric arc furnace charging system which can replace manual charging and has low equipment maintenance cost.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model relates to an electric arc furnace charging system, comprising: the electric arc furnace comprises a furnace body and a dome-shaped furnace cover arranged at the upper part of the furnace body, an electrode is arranged in the middle of the furnace cover, a feed inlet is arranged on the furnace cover at one side of the electrode, and a feed bushing is sleeved on the inner wall of the feed inlet; the feeding frame comprises a feeding hopper, a frame body and a base which are arranged from top to bottom, and a gate valve is arranged at the neck of the feeding hopper and used for controlling the feeding hopper to be opened and closed;

the blanking end of the feeding hopper is connected with the feeding port through a chute.

Preferably, the device further comprises a rail, wherein wheels are arranged at the lower part of the base and are in rolling connection with the rail.

Preferably, a heat-insulating cover and a rotating rod are arranged on the furnace cover, one end of the rotating rod is connected with the furnace cover, the other end of the rotating rod is rotationally connected with the heat-insulating cover, and the rotating rod is rotated to drive the heat-insulating cover to movably cover the feeding hole.

Preferably, the lower part of the lining is provided with a raised material separation gear for dispersing blanking.

The utility model has the advantages that: simple structure, convenient feeding operation, reduced labor intensity, improved molten steel quality, reduced cost, and reduced investment by using original factory buildings and equipment.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The above and other objects, features and advantages of the present utility model will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings. Wherein like reference numerals generally refer to like elements throughout the exemplary embodiments.

FIG. 1 is a schematic diagram of an electric arc furnace charging system according to one embodiment of the utility model.

Fig. 2 is a top view of an electric arc furnace charging system according to one embodiment of the utility model.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Reference numerals: 1. a furnace body; 2. a furnace cover; 3. an electrode; 4. a feed inlet; 5. a chute; 6. a feed hopper; 7. an electric gate valve; 8. a frame body; 9. a base; 10. a wheel; 11. a track; 12. a thermal insulation cover; 13. a rotating rod; 14. a driving device; 41. a feed bushing; 42. and (5) material separation.

Detailed Description

Preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are illustrated in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. The utility model is further described below with reference to the drawings.

As shown in fig. 1 to 3, according to an embodiment of the present utility model, there is provided an arc furnace charging system including: the electric arc furnace comprises an electric arc furnace body and a dome-shaped furnace cover 2 arranged at the upper part of the electric arc furnace body, wherein an electrode 3 is arranged in the middle of the furnace cover 2, a feed inlet 4 is arranged on the furnace cover 2 at one side of the electrode 3, a feed bushing 41 is sleeved on the inner wall of the feed inlet 4, the feed bushing 41 can avoid abrasion of blanking on the inner wall of the feed inlet, when the inner wall of the feed bushing 41 is worn, the feed bushing 41 can be replaced, so that the effect of protecting the furnace cover 2 is achieved, and a raised material dividing baffle 42 is arranged at the lower part of the feed bushing 41 and used for dispersing blanking; the feeding frame comprises a feeding hopper 6, a frame body 8 and a base 9 which are arranged from top to bottom, and a gate valve 7 is arranged at the neck of the feeding hopper 6 and used for controlling the opening and closing of the blanking of the feeding hopper 6; the blanking end of the feed hopper 6 is connected with the feed inlet 4 through a chute 5, so that blanking slides to the feed inlet 4 through the chute 5.

The electric arc furnace charging system of the embodiment further comprises a rail 11, wheels 10 are arranged at the lower part of the base 9, the wheels 10 are in rolling connection with the rail 11 to form a wheel type electric skip, and the feeding hopper 6 can be conveniently charged, transported and discharged between a charging point and the electric arc furnace through the wheels 10 and the rail 11 at the bottom of the charging frame.

Be equipped with heat preservation lid 12 and rotary rod 13 on the bell 2, the one end and the bell rotationally are connected of rotary rod 13, and the other end is connected with heat preservation lid 12, through rotatory rotary rod 13, drives the lid that heat preservation lid 12 is mobilizable and locates feed inlet 4, and when electric arc furnace during operation, accessible rotary rod 13 removes heat preservation lid 12 to feed inlet 4, keeps warm to electric arc furnace, when needs are unloaded, accessible rotary rod 13 removes heat preservation lid 12 feed inlet 4, to the inside unloading of electric arc furnace.

When the electric arc furnace charging system of the embodiment works, materials are quantitatively added into the feed hopper 6 in a belt conveying or hopper mode, the feeding frame is driven by the driving device 14 to approach the furnace body 1 along the track 11, an operator hooks the rotary rod 13 by using a hook, removes the heat preservation cover 12, and cuts off power to lift the electrode 3, so that the discharging opening of the chute 5 is in butt joint with the feeding opening 4 of the furnace cover 2, the electric gate valve 7 is started to discharge, the discharging speed is 80-150 Kg/min, the materials are heated intermittently according to the charging amount, the time is controlled to be 20-40 min, in order to avoid material aggregation in the furnace chamber, the lower part of the feeding bush 41 is provided with the raised material distribution gear 42, the materials sliding along the inner wall of the feeding bush 41 are uniformly dispersed into the circumference of the furnace chamber 2m, and meanwhile the operator is manually stirred by the furnace door. After the charging of the electric arc furnace is completed, the electric gate valve 7 is closed, the heat preservation cover 12 is moved to the feeding hole 4, and the feeding frame retreats along the rail 11 to be charged again.

The charging system of the electric arc furnace has the advantages of simple structure, convenient charging operation, reduced labor intensity of workers, improved molten steel quality, reduced cost, and reduced investment by utilizing original plants and equipment.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed.

Claims

1. An electric arc furnace charging system, comprising: the electric arc furnace comprises a furnace body and a dome-shaped furnace cover arranged at the upper part of the furnace body, an electrode is arranged in the middle of the furnace cover, a feed inlet is arranged on the furnace cover at one side of the electrode, and a feed bushing is sleeved on the inner wall of the feed inlet; the feeding frame comprises a feeding hopper, a frame body and a base which are arranged from top to bottom, and a gate valve is arranged at the neck of the feeding hopper and used for controlling the feeding hopper to be opened and closed; the blanking end of the feeding hopper is connected with the feeding port through a chute.

2. The electric arc furnace charging system according to claim 1, wherein: the novel bicycle further comprises a rail, wheels are arranged at the lower portion of the base, and the wheels are in rolling connection with the rail.

3. The electric arc furnace charging system according to claim 1, wherein: the furnace cover is provided with a heat-insulating cover and a rotating rod, one end of the rotating rod is rotationally connected with the furnace cover, the other end of the rotating rod is connected with the heat-insulating cover, and the rotating rod is rotated to drive the heat-insulating cover to movably cover the feed inlet.

4. The electric arc furnace charging system according to claim 1, wherein: the lower part of the feeding bushing is provided with a raised material distribution gear for dispersing blanking.