Kiln feeding device for iron and steel smelting

Abstract

This utility model relates to the field of material feeders, and more particularly to a material feeding device for kilns in steel smelting. It includes a feed hopper, with a feeding hopper rotatably connected to its lower end. A feeding pipe is connected to the lower end face of the feeding hopper. A deflection assembly is connected to the feed hopper, and a material collecting frame is connected to the deflection assembly. The deflection assembly drives the material collecting frame to rotate horizontally. A guide liner is rotatably connected to the inner side of the material collecting frame, and a second motor is connected to the material collecting frame. In this utility model, the raw material falls under gravity from the feeding hopper onto the outer surface of the rotating guide liner. The second motor drives the liner to rotate around its central axis, subjecting the raw material to centrifugal force. The impact points are evenly distributed on the outer surface as the liner rotates, overcoming the problem of localized deep pitting caused by continuous impact of raw material on the same area in fixed liners. The rotating structure used in this application causes wear to diffuse in a ring shape, significantly extending the overall service life of the liner.

Description

Technical Field

[0001] This utility model relates to the field of material feeders, and more particularly to a material feeder for kilns used in steel smelting. Background Technology

[0002] In the steel smelting process, the kiln, as the core reaction equipment, plays a crucial role in ensuring the uniform distribution of raw materials within it. This is essential for guaranteeing smelting efficiency, product quality, and the rational use of energy. The kiln's material distribution device is a vital component in achieving this goal. Through a specific structural design, the material distribution device precisely and evenly delivers raw materials such as iron ore, coke, and limestone to designated areas within the kiln according to process requirements. This ensures that the raw materials can fully react under high-temperature conditions, thereby improving the quality and yield of steel smelting. The stable operation of the material distribution device relies heavily on its key component—the liner. Liners are installed in the material channels and areas of direct contact with raw materials within the device. Their primary function is to protect the device's structure from direct impact and abrasion from the raw materials, extending the overall service life of the material distribution device.

[0003] However, in actual smelting operations, the environment in which the liner plates are located is extremely harsh, subjecting them to the combined effects of impact, erosion, and abrasion over long periods, resulting in a very rapid wear rate. Specifically, after the raw material enters through the feed inlet of the charging device, it falls or flows at high speed under the influence of gravity and conveying power, colliding violently with the liner plate surface and generating a strong impact. This impact causes plastic deformation and fatigue damage to the liner plate surface. At the same time, hard particles such as quartz and iron oxides contained in the raw material will slide and roll relative to the liner plate during contact, causing abrasion to the liner plate surface and further aggravating the wear of the liner plate. Therefore, this application aims to solve the problem that the service life of the liner plate structure of the kiln charging device is reduced due to the combined effects of impact and abrasion during long-term use, and specifically proposes a kiln charging device for iron and steel smelting. Utility Model Content

[0004] In order to overcome the problem that the lining plates of the existing kiln feeding device are prone to wear under the dual effects of high-speed raw material impact and hard particle abrasion during use, which leads to a shortened service life.

[0005] The technical solution of this utility model is as follows: a furnace feeding device for iron and steel smelting, including a feeding hopper, a feeding hopper rotatably connected to the lower end of the feeding hopper, a feeding pipe connected to the lower end face of the feeding hopper, a deflection component connected to the feeding hopper, a material collection frame connected to the deflection component, and the deflection component being used to drive the material collection frame to rotate in the horizontal direction.

[0006] The inner side of the material collection rack is rotatably connected to a guide liner, and a second motor is connected to the material collection rack. The second motor is fixedly connected to the material collection rack and is used to drive the guide liner to rotate around its own central axis.

[0007] The lower end of the guide liner is provided with a feeding plate, which is fixedly connected to the collecting frame.

[0008] Preferably, the feeding plate is connected to a mounting head, and the mounting head is connected to a side baffle.

[0009] Preferably, the deflection assembly includes a connecting piece, which is fixedly connected to the material collection frame, and a limit frame is rotatably connected to the connecting piece, which is fixedly connected to the feed hopper.

[0010] Preferably, the deflection assembly further includes a fixing head, which is fixedly connected to the material collection frame. A second rotating sleeve is rotatably connected to the fixing head, a hydraulic push rod is connected to the second rotating sleeve, a first rotating sleeve is connected to the hydraulic push rod, and a connecting frame is rotatably connected to the first rotating sleeve. The connecting frame is fixedly connected to the feed hopper.

[0011] Preferably, the feeding hopper is connected to a meshing ring, the feeding hopper is connected to a first motor, the output shaft of the first motor is connected to a meshing wheel, and the teeth of the meshing wheel mesh with the teeth of the meshing ring.

[0012] Preferably, an inner support frame is connected to the output shaft of the second motor, and the inner support frame is fixedly connected to the guide sleeve.

[0013] Preferably, a positioning ring is fitted on the outer surface of the guide liner, the positioning ring is rotatably connected to the guide liner, and the positioning ring is fixedly connected to the material collection frame.

[0014] The beneficial effects of this utility model are:

[0015] 1. Raw materials fall under gravity from the feeding hopper onto the outer surface of the rotating guide liner. A second motor drives the liner to rotate around its central axis, subjecting the raw materials to centrifugal force. The impact points are evenly distributed on the outer surface as the liner rotates, overcoming the problem of localized deep pitting caused by continuous impact of raw materials on the same area in fixed liners. The rotating structure used in this application causes wear to diffuse in a ring shape, significantly extending the overall service life of the liner.

[0016] 2. When raw materials fall into the rotating guide liner, centrifugal force causes agglomerated materials to be thrown towards the side baffles and impact them. The impact force causes the agglomerated materials to break up and disperse, reducing the risk of them directly entering the kiln. The side baffles are designed to be detachable. If a baffle is damaged due to impact, the rotation direction of the liner can be changed, causing subsequent agglomerated materials to be redirected to impact other intact baffles, thus enabling safe replacement of damaged parts without shutting down the kiln. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the hydraulic push rod of Embodiment 1 of the kiln feeding device of this utility model.

[0018] Figure 2 The diagram shown is a three-dimensional schematic of the connecting piece of Embodiment 1 of the kiln feeding device of this utility model;

[0019] Figure 3 The diagram shown is a perspective view of the side baffle of Embodiment 2 of the kiln feeding device of this utility model.

[0020] Figure 4 The diagram shown is a three-dimensional structural schematic of the guide liner of Embodiment 2 of the kiln feeding device of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Feed hopper; 2. Feeding hopper; 3. Engaging ring; 4. Engaging wheel; 5. First motor; 6. Feeding pipe; 701. Connecting frame; 702. First rotating sleeve; 703. Hydraulic push rod; 704. Second rotating sleeve; 705. Fixed head; 706. Connecting piece; 707. Limiting frame; 801. Feeding plate; 802. Mounting head; 803. Side baffle; 804. Collecting rack; 901. Second motor; 902. Inner support frame; 903. Guide liner; 904. Positioning ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] refer to Figure 1 The structure shown is a furnace feeding device for iron and steel smelting, including a feeding hopper 1, a feeding hopper 2 rotatably connected to the lower end of the feeding hopper 1, a feeding pipe 6 connected to the lower end face of the feeding hopper 2, a deflection assembly connected to the feeding hopper 1, and a collecting rack 804 connected to the deflection assembly. The deflection assembly is used to drive the collecting rack 804 to rotate in the horizontal direction.

[0025] A guide liner 903 is rotatably connected to the inner side of the material collection rack 804. A second motor 901 is connected to the material collection rack 804. The second motor 901 is fixedly connected to the material collection rack 804. The second motor 901 is used to drive the guide liner 903 to rotate around its own central axis.

[0026] The lower end of the guide liner 903 is provided with a feeding plate 801, which is fixedly connected to the collection rack 804.

[0027] Ideally, the guide sleeve 903 is designed to be cylindrical.

[0028] Among them, the second motor 901 is generally selected to be used in conjunction with a NEMA17 motor;

[0029] The feed plate 801 can be configured as shown in the attached figure. Figure 1 The “C” shaped panel shown can also be in other forms, such as rectangular panels or “V” shaped panels;

[0030] When the raw material from the feed hopper 2 falls under the influence of gravity, it lands on the outer surface of the guide liner 903. Simultaneously, the second motor 901 drives the guide liner 903 to rotate around its central axis. This allows the raw material landing on the outer surface of the guide liner 903 to be affected by the centrifugal force generated by the rotation. As the guide liner 903 rotates, the impact point of the raw material is evenly distributed on the outer surface of the guide liner 903. Compared with the fixed liner in the existing process, which causes the raw material to continuously impact the same area and produce deep pits, the rotating structure adopted in this application can effectively make the wear spread in a ring shape, thereby significantly improving the service life of the entire liner structure.

[0031] Example 2

[0032] Based on the above embodiment 1, in order to address the issue that some raw materials in a caking state fall into the kiln along the liner after falling, and that the caking state of the raw materials will affect the working efficiency of the kiln to a certain extent, refer to... Figure 2 - Figure 4 The structure shown is as follows:

[0033] Unlike the previous embodiment, the feeding plate 801 is connected to a mounting head 802, and the mounting head 802 is connected to a side baffle 803.

[0034] The side baffle 803 can be configured as shown in the attached figure. Figure 3 The rectangular plate shown can also be in other forms, such as circular or triangular plates, and is generally distributed at the upper end of the feeding plate 801.

[0035] The side baffle 803 is an existing technology and can be set on the upper end of the feeding plate 801 in any existing way. For example, it can be detachably connected to the feeding plate 801 by setting a corresponding frame, or directly welded to the feeding plate 801. In this embodiment, the mounting head 802 can be used to replace the corresponding frame and detachably connected to the feeding plate 801.

[0036] When raw materials fall into the rotating guide liner 903, they are subjected to centrifugal force. Some of the raw materials, especially those in a clump state, are thrown towards and collide with the side baffles 803. This impact helps to break up and disperse the clumps, thereby reducing the risk of clumps directly entering the kiln. Simultaneously, the side baffles 803 are designed to be detachable. If a side baffle 803 is damaged due to impact, the rotation direction of the guide liner 903 can be changed, causing subsequent clumps to tend to collide with other intact side baffles 803. This allows operators to safely replace damaged side baffles 803 without shutting down the equipment.

[0037] Furthermore, the deflection assembly includes a connecting piece 706, which is fixedly connected to the material collection rack 804. A limit frame 707 is rotatably connected to the connecting piece 706, and the limit frame 707 is fixedly connected to the feed hopper 1.

[0038] Furthermore, the deflection assembly also includes a fixed head 705, which is fixedly connected to the material collection frame 804. A second rotating sleeve 704 is rotatably connected to the fixed head 705. A hydraulic push rod 703 is connected to the second rotating sleeve 704. A first rotating sleeve 702 is connected to the hydraulic push rod 703. A connecting frame 701 is rotatably connected to the first rotating sleeve 702. The connecting frame 701 is fixedly connected to the feed hopper 1.

[0039] When it is necessary to adjust the feeding angle of the feeding plate 801, the hydraulic push rod 703 is driven to extend and retract, so that the collecting frame 804 rotates around the central axis of its connection shaft with the limiting frame 707, thereby allowing the feeding angle of the feeding plate 801 to be adjusted.

[0040] Furthermore, a meshing ring 3 is connected to the feeding hopper 2, a first motor 5 is connected to the feeding hopper 1, and a meshing wheel 4 is connected to the output shaft of the first motor 5. The teeth of the meshing wheel 4 mesh with the teeth of the meshing ring 3.

[0041] Among them, the first motor 5 is generally selected as a NEMA17 motor for use.

[0042] Furthermore, an inner support frame 902 is connected to the output shaft of the second motor 901, and the inner support frame 902 is fixedly connected to the guide sleeve 903.

[0043] Furthermore, a positioning ring 904 is fitted on the outer surface of the guide liner 903. The positioning ring 904 is rotatably connected to the guide liner 903 and fixedly connected to the material collection rack 804.

[0044] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A furnace feeding device for iron and steel smelting, comprising a feeding hopper (1), wherein a feeding hopper (2) is rotatably connected to the lower end of the feeding hopper (1), and a feeding pipe (6) is connected to the lower end face of the feeding hopper (2), characterized in that: A deflection assembly is connected to the feed hopper (1), and a collection rack (804) is connected to the deflection assembly. The deflection assembly is used to drive the collection rack (804) to rotate in the horizontal direction. The inner side of the material collection rack (804) is rotatably connected to a guide liner (903), and a second motor (901) is connected to the material collection rack (804). The second motor (901) is fixedly connected to the material collection rack (804), and the second motor (901) is used to drive the guide liner (903) to rotate around its own central axis. The lower end of the guide liner (903) is provided with a feeding plate (801), which is fixedly connected to the collection rack (804).

2. The furnace charging device for iron and steel smelting according to claim 1, characterized in that: The feeding plate (801) is connected to an installation head (802), and the installation head (802) is connected to a side baffle (803).

3. The furnace charging device for iron and steel smelting according to claim 1, characterized in that: The deflection assembly includes a connecting piece (706), which is fixedly connected to the material collection rack (804). A limit frame (707) is rotatably connected to the connecting piece (706), and the limit frame (707) is fixedly connected to the feed hopper (1).

4. The furnace charging device for iron and steel smelting according to claim 1, characterized in that: The deflection assembly also includes a fixing head (705), which is fixedly connected to the material collection frame (804). A second rotating sleeve (704) is rotatably connected to the fixing head (705). A hydraulic push rod (703) is connected to the second rotating sleeve (704). A first rotating sleeve (702) is connected to the hydraulic push rod (703). A connecting frame (701) is rotatably connected to the first rotating sleeve (702). The connecting frame (701) is fixedly connected to the feed hopper (1).

5. The furnace charging device for iron and steel smelting according to claim 4, characterized in that: The feeding hopper (2) is connected to a meshing ring (3), the feeding hopper (1) is connected to a first motor (5), the output shaft of the first motor (5) is connected to a meshing wheel (4), and the teeth of the meshing wheel (4) mesh with the teeth of the meshing ring (3).

6. The furnace charging device for iron and steel smelting according to claim 1, characterized in that: An inner support frame (902) is connected to the output shaft of the second motor (901), and the inner support frame (902) is fixedly connected to the guide sleeve (903).

7. The furnace charging device for iron and steel smelting according to claim 2, characterized in that: A positioning ring (904) is fitted on the outer surface of the guide liner (903). The positioning ring (904) is rotatably connected to the guide liner (903) and fixedly connected to the material collection rack (804).

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