Uniform feeding assembly for electric arc furnace

Abstract

The uniform feeding assembly comprises a hopper which is arranged at the top of the electric arc furnace and is in a funnel shape and a power assembly arranged on the upper side of the hopper, a discharging assembly is rotationally arranged on the inner wall of a narrow opening of the hopper and comprises a material blocking plate, and a discharging opening is formed in the edge of the material blocking plate. An electrode inserting pipe is fixedly arranged in the center of the material blocking plate, the electrode inserting pipe is driven by a power assembly to enable the discharging opening to conduct rotary discharging, and a material guiding assembly is arranged below the material blocking plate and used for expanding the discharging area of the discharging opening; the material guiding assembly comprises a guiding hopper fixedly arranged on the inner wall of the lower portion of the hopper, the interior of the guiding hopper is hollow for raw materials to enter, the top of the guiding hopper is open to form a feeding part, the feeding part corresponds to the outer edge of the discharging opening, the bottom of the guiding hopper extends towards the inner wall of the electric arc furnace, and a plurality of discharging holes are formed in the lower side wall of the guiding hopper. The problem that in the prior art, an electric arc furnace cannot be fully covered with a feeding port, and consequently feeding uniformity is insufficient is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal processing technical field, concretely relates to a uniform feeding assembly for electric arc furnace. BACKGROUND

[0002] The early electric arc furnace is all the raw materials to be smelted are put into the electric arc furnace for smelting before smelting, and basically no other raw materials need to be added during smelting, but with the improvement of smelting process, many advanced smelting processes need to add raw materials during smelting, so the electric arc furnace equipment that can continuously add raw materials gradually appears on the market. This electric arc furnace equipment that can continuously add raw materials usually sets a feeding port on one side of the electric arc furnace, and makes the raw materials flow into the electric arc furnace through the guide plate erected at the feeding port, but this guide mode is easy to cause the raw materials to fall in one place and cause a large amount of raw materials to accumulate in that place, and too much accumulation is easy to cause the incoming raw materials to be unevenly heated, thereby causing the melting time to deviate, resulting in uneven product quality. For this reason, the present inventor proposes a uniform feeding device and an electric arc furnace with the feeding device, as described in reference 1.

[0003] Reference 1: Chinese patent with patent number CN222069231U;

[0004] Reference 1 discloses a uniform feeding device and an electric arc furnace with the feeding device, which includes a hopper, an electrode insertion pipe and a baffle plate. The baffle plate is rotatably arranged in the discharge port of the hopper, and the baffle plate is provided with a discharge port for the raw materials in the hopper to fall. The hopper is provided with a power assembly for driving the electrode insertion pipe to rotate, which drives the electrode insertion pipe to rotate in the hopper, so that the raw materials are discharged from the circumferential surface of the hopper discharge port, thereby realizing the relatively uniform discharge of the raw materials.

[0005] The present inventor found that when using the device recorded in reference 1 in actual application, if the hopper discharge port is too large, higher processing precision is required to ensure the sealing property, thereby reducing the energy dissipation, and increasing the preparation cost of the equipment. If the hopper discharge port is small, the raw materials cannot be added to different positions in the electric arc furnace, thereby reducing the uniformity of the feeding process, that is, to some extent, affecting the product quality. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the problem of insufficient feeding uniformity caused by the fact that the feeding port cannot fully cover the electric arc furnace in the prior art, and provides a uniform feeding assembly for electric arc furnace.

[0007] The utility model discloses a uniform feeding assembly for electric arc furnace, which solves the above technical problems and adopts the technical scheme of comprising a hopper in the funnel shape arranged on the top of the electric arc furnace and a power assembly arranged on the upper side of the hopper, a discharging assembly is rotatably arranged on the inner wall of the narrow mouth of the hopper, the discharging assembly comprises a baffle plate, a discharging port is arranged at the edge of the baffle plate, an electrode insertion pipe is fixedly arranged at the center of the baffle plate, the electrode insertion pipe is driven by the power assembly to rotate and discharge for the discharging port, a guide assembly is arranged below the baffle plate, and the guide assembly is used for expanding the discharging area of the discharging port.

[0008] The guide assembly comprises a guide hopper fixedly arranged on the inner wall below the hopper, the guide hopper is hollow inside for the raw materials to enter, the top of the guide hopper is open to form an inlet part, the inlet part corresponds to the outer edge of the discharging port, the bottom of the guide hopper extends to the inner wall of the electric arc furnace, and a plurality of discharging holes are arranged on the lower side wall of the guide hopper.

[0009] As a further optimization of the utility model discloses a uniform feeding assembly for electric arc furnace, the discharging hole is an inclined hole inclined to the center of the guide hopper.

[0010] As a further optimization of the utility model discloses a uniform feeding assembly for electric arc furnace, the top of the guide hopper is covered with a distribution disc rotatably connected with the electrode insertion pipe, and the distribution disc is a sieve disc.

[0011] As a further optimization of the utility model discloses a uniform feeding assembly for electric arc furnace, a plurality of cleaning strips are arranged between the distribution disc and the baffle plate, and the cleaning strips are fixedly arranged on the baffle plate.

[0012] As a further optimization of the utility model discloses a uniform feeding assembly for electric arc furnace, the guide hopper is a horn-shaped flared port with a high center and a low edge.

[0013] As a further optimization of the utility model discloses a uniform feeding assembly for electric arc furnace, the inlet part is Y-shaped.

[0014] As a further optimization of the utility model discloses a uniform feeding assembly for electric arc furnace, a plurality of guide columns are uniformly arranged on the upper side of the baffle plate.

[0015] As a further optimization of the utility model discloses a uniform feeding assembly for electric arc furnace, a closing plate covering the discharging port is rotatably arranged on the hopper, the closing plate is limited by two limiting strips arranged on the baffle plate, and the space between the two limiting strips is twice the size of the closing plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model discloses a guide hopper is set up with the outer edge of blanking mouth, to obtain the raw material of blanking mouth edge, and send the raw material to the internal position of arc furnace that blanking mouth can not cover to, and do not interfere with the raw material falling of blanking mouth center place corresponding to arc furnace internal center position, and then make the raw material can more evenly fall into each position of arc interior. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the utility model's front view;

[0019] Figure 2 It is the structure schematic diagram of the utility model's first section;

[0020] Figure 3 It is the structure schematic diagram of the utility model's A place amplification;

[0021] Figure 4 It is the structure schematic diagram of the utility model's second section;

[0022] Figure 5 It is the structure schematic diagram of the utility model's use state section;

[0023] Mark in drawing: 1, hopper;2, power assembly;3, electrode inserts pipe;4, blanking assembly;401, guide column;402, baffle;403, blanking mouth;404, closing plate;405, cleaning strip;406, limit strip;5, guide assembly;501, distributing disc;502, feed part;503, guide hopper;504, blanking hole;6, arc furnace. DETAILED DESCRIPTION

[0024] In order to better understand the utility model, the content of the utility model is further illustrated below in conjunction with examples, but the content of the utility model is not limited to the following examples.

[0025] As Figure 5As shown, a uniform feeding assembly for an electric arc furnace, similar to existing technologies, includes a hopper 1 and an electrode insertion tube 3. The hopper 1 is used to feed material into the electric arc furnace 6, and the electrode insertion tube 3 is used to insert graphite electrodes into the electric arc furnace 6 to enable its use. Specifically, the hopper 1 is a conical funnel shape, with a circular baffle 402 rotating within the narrow opening at the bottom of the hopper 1. The baffle 402 has a discharge port 403 for the material in the hopper 1 to fall. As the baffle 402 rotates, the position of the discharge port 403 changes accordingly, allowing the material in the hopper 1 to fall from different positions at the bottom of the hopper 1, achieving a uniform feeding effect. Simultaneously, the rotation of the baffle 402 helps to flow the material in the hopper 1, thus preventing blockage inside the hopper 1. A power assembly 2 is fixedly installed at the top edge of the hopper 1. The power assembly 2 drives the baffle plate 402 to rotate through the electrode insertion tube 3 so as to uniformly discharge the raw materials.

[0026] like Figures 1-4 As shown, unlike existing technologies, a material guiding assembly 5 is fixed to the inner wall of the narrow opening at the bottom of the hopper 1 below the baffle plate 402. The material guiding assembly 5 includes a guide bucket 503 fixed to the inner wall of the narrow opening at the bottom of the hopper 1. Specifically, the guide bucket 503 is hollow inside to allow raw materials to enter. The guide bucket 503 is positioned towards the bottom of the hopper 1 and communicates with the outside to form a feeding section 502. The feeding section 502 is Y-shaped to stably collect the raw materials falling from the edge of the discharge port 403. The guide bucket 503 extends inclinedly from the bottom of the hopper 1 towards the inner edge of the electric arc furnace 6, making the guide bucket 503 a flared, downward-facing trumpet shape. This allows the feeding section 502 of the guide bucket 503 to stably collect raw materials and transport them into the electric arc furnace 6 away from the hopper 1. The guide hopper 503 has multiple material discharge holes 504 evenly distributed on its flared inner wall. Specifically, the material discharge holes 504 are inclined holes that slope towards the center of the guide hopper 503. The material discharge holes 504 can disperse the raw materials from the guide hopper 503 into the electric arc furnace 6 away from the hopper 1, so as to distribute the raw materials evenly to the edge of the electric arc furnace 6 away from the hopper 1. When the material discharge port 403 is rotated, the raw materials can be evenly distributed into different positions inside the electric arc furnace 6, thereby reducing the impact of uneven material addition on product quality. At the same time, it can also increase the path length of heat passing through the material discharge holes 504 inside the electric arc furnace 6, thereby reducing the influence of the material guiding component 5 and the material feeding component 4 on the heat dissipation inside the electric arc furnace 6.

[0027] A plurality of cleaning strips 405 are arranged between the material blocking plate 402 and the material distribution disc 501, the cleaning strips 405 can rotate with the material blocking plate 402, thereby extruding the raw materials on the material distribution disc 501 to reduce the probability of the raw materials being blocked on the material distribution disc 501, and at the same time, the cleaning strips 405 can drive part of the raw materials to the feeding part 502, thereby uniformly distributing the raw materials to various positions inside the electric arc furnace 6 to maintain the quality of the output products.

[0028] The upper side of the material blocking plate 402 is fixedly provided with three material guiding columns 401, the three material guiding columns 401 can rotate with the material blocking plate 402 to improve the vibration effect of the raw materials during the rotation of the material blocking plate 402, that is, to keep the raw materials in a loose state, so that the raw materials can stably and uniformly pass through the material falling port 403 to realize the stable and continuous addition of the raw materials.

[0029] The material blocking plate 402 is provided with a closing plate 404 rotatably arranged on the hopper 1, the closing plate 404 is used for covering the material falling port 403, the upper side of the material blocking plate 402 is fixedly provided with two limiting strips 406, the spacing between the two limiting strips 406 is the size of the two closing plates 404, when the material blocking plate 402 rotates in a forward direction, the closing plate 404 will be connected with the limiting strip 406 in the corresponding direction, thereby allowing the raw materials to pass through the material falling port 403 and be put into the electric arc furnace 6 for use, after the addition of the raw materials is completed, the material blocking plate 402 can be reversely rotated, so that the closing plate 404 is connected with the limiting strip 406 in the opposite direction, so as to close the material falling port 403 to relatively close the electric arc furnace 6, that is, to reduce the probability that the impurities in the outside environment enter the inner wall of the electric arc furnace 6 through the material falling port 403 to affect the quality of the products, and at the same time, the amount of heat in the electric arc furnace 6 escaping from the material falling port 403 can be reduced to a certain extent.

[0030] The specific embodiments of the utility model are described above. It should be understood that the utility model is not limited to the above specific embodiments, and those skilled in the art can make various modifications or changes within the scope of the claims, which does not affect the essential content of the utility model.

Claims

1. A uniform feeding assembly for arc furnace, comprising a funnel-shaped hopper (1) arranged on the top of the arc furnace (6) and a power assembly (2) arranged on the upper side of the hopper (1), a discharging assembly (4) is rotatably arranged on the inner wall of the narrow mouth of the hopper (1), the discharging assembly (4) comprises a baffle plate (402), a discharging opening (403) is arranged at the edge of the baffle plate (402), an electrode inserting pipe (3) is fixedly arranged at the center of the baffle plate (402), the electrode inserting pipe (3) is driven by the power assembly (2) to rotate the discharging opening (403) to discharge, characterized in that: A guide component (5) is arranged below the baffle plate (402) and is used to expand the discharging area of the discharging opening (403); The guide component (5) comprises a guide hopper (503) fixedly arranged on the inner wall below the hopper (1), the guide hopper (503) is hollow inside for the raw materials to enter, the top of the guide hopper (503) is open to form a feeding part (502), the feeding part (502) corresponds to the outer edge of the discharging opening (403), the bottom of the guide hopper (503) extends to the inner wall of the electric arc furnace (6), and a plurality of discharging holes (504) are arranged on the lower side wall of the guide hopper (503).

2. An even feeding assembly for an electric arc furnace as claimed in claim 1, characterized in that: The discharging holes (504) are inclined holes inclined to the center of the guide hopper (503).

3. A uniform charge assembly for an electric arc furnace as defined in claim 1, wherein: The top of the guide hopper (503) is covered with a distribution disc (501) rotatably connected with the electrode inserting pipe (3), and the distribution disc (501) is a sieve disc.

4. An even feeding assembly for an electric arc furnace as claimed in claim 3, characterized in that: A plurality of cleaning strips (405) are arranged between the distribution disc (501) and the baffle plate (402), and the cleaning strips (405) are fixedly arranged on the baffle plate (402).

5. An even feeding assembly for an electric arc furnace as claimed in claim 1, characterized in that: The flared portion of the guide hopper (503) is a horn shape with a high center and a low edge.

6. An even feeding assembly for an electric arc furnace as claimed in claim 1, characterized in that: The feeding part (502) is Y-shaped.

7. An even feeding assembly for an electric arc furnace as claimed in claim 1, characterized in that: A plurality of guide columns (401) are uniformly arranged on the upper side of the baffle plate (402).

8. An even feeding assembly for an electric arc furnace as claimed in claim 1, characterized in that: A closing plate (404) covering the discharging opening (403) is rotatably arranged on the hopper (1), the closing plate (404) is limited by two limiting strips (406) arranged on the baffle plate (402), and the space between the two limiting strips (406) is twice the size of the closing plate (404).

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