Rotary discharging chute capable of protecting furnace lining of melting furnace

Abstract

A rotary discharging chute capable of protecting a furnace lining of a melting furnace comprises a chute body, and the chute body is rotatably installed on a rotary base and driven by a driving device to rotate. A heavy hammer door device is installed in the chute body and comprises a heavy hammer door, and the upper end of the heavy hammer door is rotatably installed on bearing seats on the two sides of the chute body through a second rotating shaft. And the lower end of the heavy hammer door is vertical and is spaced from the chute bottom plate by a certain distance. According to the rotary discharging chute capable of protecting the furnace lining of the melting furnace, the furnace lining of the melting furnace can be effectively prevented from being damaged when large waste steel enters a furnace body.

Description

TECHNICAL FIELD

[0001] The utility model relates to a scrap steel conveying device, in particular to a rotary unloading chute capable of protecting the lining of a melting furnace. BACKGROUND

[0002] The patent "a kind of continuous feeding distribution device and method of weighing and metering melting furnace" with application number "202110455147.X" is an invention patent applied before this application.The rotating unloading chute is also provided in the device, and in the patent 202110455147.X, the chute is arranged on the rotating base and can be rotated by driving device, the material falls into the chute from the machine head of scale conveyor, and due to the inclination of the chute, it slides into the melting furnace under the action of gravity.

[0003] The above-mentioned utility model is used for conveying during general steel smelting.The raw material of general steel smelting comes from domestic scrap iron, and the specific gravity is light, which is basically light and thin material, briquetting material of light and thin material, planing material and broken material etc.Due to the fact that the sliding of material on the chute relies on its own gravity more than friction on the chute, for light and thin material and planing material, the inclination angle of the chute is generally large, otherwise these materials are not easy to slide.When applied to special steel smelting and recycling, the raw material of special steel smelting is unqualified steel billet, bread iron, old castings discarded by factory, damaged alloy steel parts of large-scale machinery products etc.If the rotating unloading chute in the above-mentioned patent is still used, when the briquetting material, heavy bar, bread iron and short head cast billet slide down from the chute, part of the material will hit the furnace wall with great impact force, which will break the lining and damage the furnace body, resulting in early damage of the furnace body, affecting the service life of the furnace body and increasing the cost.Therefore, when applied to special steel smelting and recycling, the rotating unloading chute needs to be improved again. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a rotating unloading chute capable of protecting the lining of a melting furnace, which is applied to special steel smelting and recycling to avoid damage to the lining of the melting furnace when briquetting material, heavy bar, bread iron and short head cast billet enter the furnace body.

[0005] To solve the above-mentioned technical problem, the technical scheme adopted by the utility model is as follows:

[0006] A rotating unloading chute capable of protecting the lining of a melting furnace, comprising a chute main body, the chute main body is rotatably installed on a rotating base and driven to rotate by a driving device; a weight door device is installed in the chute main body, the weight door device comprises a weight door, the upper end of the weight door is rotatably installed on the bearing seat on both sides of the chute main body through a second rotating shaft; the lower end of the weight door is vertically spaced apart from the chute bottom plate by a certain distance.

[0007] A vibration motor is installed on the outer side of the chute main body.

[0008] The angle between the bottom plate of the chute body and the horizontal plane is 0° to 10°.

[0009] This utility model provides a rotary discharge chute that can protect the lining of a molten furnace, and has the following technical effects:

[0010] 1) By reducing the inclination angle of the chute body to near horizontal, the scrap steel moves more smoothly after falling from the scrap steel slab mill into the chute body. Simultaneously, vibrating motors are installed on both sides of the chute. The excitation force generated by these motors forces the material to bounce uniformly forward along the chute's bottom slope, then fall vertically onto the material already added before furnace start-up. This ensures the scrap steel can smoothly move into the melting furnace without remaining on the chute body. In summary, compared to the chute in "202110455147.X", this application significantly reduces damage to the furnace lining.

[0011] 2) By adding a heavy hammer gate to the chute, the occasional material falling from the scale conveyor does not directly rush into the melting furnace without vibrating with the chute. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a schematic diagram of the installation of this utility model.

[0014] Figure 2 This is the front view of the present invention.

[0015] Figure 3 This is a left view of the chute body in this utility model.

[0016] Figure 4 This is a front view of the driving device of the chute body in this utility model.

[0017] Figure 5 This is a top view of the first gear and the second gear in the meshing state of this utility model.

[0018] In the diagram: driven wheel 1, base 2, rotating base 3, first gear 4, second gear 5, motor reducer 6, shock absorber spring 7, chute body 8, chute bottom plate 9, hammer door device 10, second rotating shaft 11, bearing seat 12, hammer door 13, vibratory motor 14, arc track 15, scrap steel scale machine 16, melting furnace 17. Detailed Implementation

[0019] like Figure 1 As shown, a rotary unloading chute that can protect the furnace lining of a melting furnace is set between a scrap steel slab machine 16 and a melting furnace 17 to receive scrap steel from the scrap steel slab machine 16 and then transfer it into the melting furnace 17.

[0020] As shown in Figure 2 , a rotary discharge chute for protecting the lining of a melting furnace comprises a rotary base 3, a motor reducer 6 is installed on the rotary base 3, the output end of the motor reducer 6 is vertical and connected with a first gear 4. A second gear 5 is internally provided with a bearing, the inner ring of the bearing is an internal gear structure (gear ring), and is fixed on a base 2 through bolts. The rotary base 3 is placed above the second gear 5 and is fixed on the outer ring of the bearing of the second gear 5 through bolts. The first gear 4 and the gear ring of the second gear 5 form an internal meshing structure. When the motor reducer 6 is started, the first gear 4 drives the rotary base 3 and other mechanical structures above to rotate as a whole on an arc-shaped track 15.

[0021] As shown in Figure 3 , vibration motors 14 are arranged on both sides of the chute body 8. The vibration motors 14 drive the chute body 8, so that the scrap steel in the chute body 8 resonates, and the scrap steel uniformly vibrates downward along the chute bottom plate 9 of the chute body 8 with a small angle of inclination, and then falls into the hearth at a small speed. The mode is relatively gentle, and the damage to the furnace body is not large. By increasing the vibration motor 14, the length of the device can be increased, and the inclination angle can be reduced, so that the distance from the furnace body to the scrap steel scale plate machine can be increased, the head drive and head bearing device of the scrap steel scale plate machine can be protected from close contact with high temperature, the service life of the scrap steel scale plate machine can be strengthened, and the failure rate of the head drive can be reduced.

[0022] A heavy hammer door device 10 is arranged at the upper end position of the chute body 8. The heavy hammer door device 10 can avoid that the impact force of the large block material on the chute bottom plate 9 is too large, causing the material to quickly rush to the furnace port. The heavy hammer door device 10 comprises a heavy hammer door 13, the upper end of the heavy hammer door 13 is rotatably installed on the bearing seat 12 on both sides of the chute body 8 through a second rotating shaft 11. The lower end of the heavy hammer door 13 is spaced apart from the chute bottom plate 9 by a certain distance, so as to control the layer height of the material layer. The front end of the rotary vibration chute 5 is too close to the furnace port, and the heavy hammer door device 10 can be made into a detachable type and made of high-temperature-resistant material. By arranging the heavy hammer door device, it is not only suitable for thin and broken materials, but also suitable for individual thick materials which are not easy to break and shear, and large block materials which are difficult to cut by oxygen, so as to ensure that the device is suitable for conveying various types of materials, without worrying about the inertia of the material impacting and damaging the lining of the furnace body, and improving the universality.

[0023] The inclination angle of the chute bottom plate 9 of the chute body 8 to the horizontal plane is about 0°-9°. Compared with the original chute, the inclination angle of the chute bottom plate 9 is set more gently, close to horizontal, so as to avoid direct impact of the scrap steel on the furnace body.

[0024] A damping spring 7 is arranged between the chute body 8 and the rotary base 3. The damping spring 7 can play a buffering role when the scrap steel falls.

Claims

1. A rotary draw-off chute which protects the lining of a smelting furnace, characterized in that: The chute body (8) is rotatably installed on the rotating base (3) and is driven to rotate by a driving device; a weight door device (10) is installed in the chute body (8), the weight door device (10) comprises a weight door (13), the upper end of the weight door (13) is rotatably installed on the bearing seat (12) on the two sides of the chute body (8) through a second rotating shaft (11); the lower end of the weight door (13) is vertically spaced apart from the chute bottom plate (9) by a certain distance.

2. A rotary draw-off chute for protecting the lining of a smelting furnace according to claim 1, characterized in that A vibrating motor (14) is installed outside the chute body (8).

3. A rotary draw-off chute for protecting the lining of a smelting furnace, according to claim 1, characterized in that: The included angle between the chute bottom plate (9) of the chute body (8) and the horizontal plane is 0°-10°.

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