WO2013013425A1 - Tank feeding method and feeding device - Google Patents

Abstract

Disclosed is a tank feeding method, comprising the following steps: a. filling a material into a rotary feeding device; b. the feeding device being at least disposed with a discharge opening deviating from the center of rotation, discharging the material into a tank along the periphery by means of the rotation of the discharge opening about the center of rotation. Further disclosed is a tank feeding device, comprising a base, a hopper and a driving device. The base is disposed at the top of the serial-type bell-less material tank of a blast furnace. The hopper is disposed on a base and joined with the base in a rotary manner. The driving device is used for driving the hopper to rotate. The discharge outlet of the hopper deviates from the center of rotation of the hopper. The tank feeding device of the present invention has a small overall size and a simple structure. The rotating material distribution guarantees the evenness of granularity distribution of the material that enters a material tank, so that the segregation phenomenon of material is avoided; also, the tank feeding device is joined with both the tank feeding opening and the discharge opening of the feeding device in a sealed manner, so as to prevent material dusts from escaping from the tank feeding device to cause environmental pollution, so the operation is safe and environmentally friendly.

Description

 Feeding tank feeding method and feeding device Technical field

The invention relates to a blast furnace string tank bell-less top charging device, in particular to a receiving tank flow distribution device for distributing materials entering a material-free charging system in a receiving tank.

Background technique

In order to solve the segregation phenomenon of the materials entering the blast furnace charging system, the materials are redistributed before entering the blast furnace string tank without the bell charging system, ensuring the uniformity of the materials entering the charging system tank and avoiding material segregation. The influence of the blast furnace fabric causes uneven distribution of material size in the blast furnace furnace, which affects the blast furnace rising gas distribution.

In the prior art, the blast furnace top-top canister-free material charging device uses a rotating tank device or a fixed distributor to perform secondary distribution of the stream.

The rotary tank device is provided with a rotating tank between the top of the blast furnace cans and the material receiving tank of the feeding main belt head wheel cover, and the material is circularly distributed by rotating the rotating tank. In the tank-free material receiving tank, the rotating material tank has a large diameter and a large amount of loading, which is self-important. Therefore, the rotating mechanism of the rotating tank adopts a circumferential direction to set the roller and the raceway as a rotating support. Its drive uses a pin gear drive. The rotary hopper device can solve the problem of secondary distribution of materials, but the whole device is high in height, large in volume and heavy in weight. On the one hand, the height of the entire top loading system is increased, and the load of the top charging device is increased; When the rotating tank is in operation, the circumferential direction is not easy to seal, causing dust leakage and polluting the environment. .

In order to reduce the height of the blast furnace top-top cans without the bell charging equipment, a fixed distributor is often used for secondary distribution of the stream. A fixed distributor is installed on the top of the upper receiving tank of the string tank unloading device, and the structural feature is that the distributor feeding port is connected with the discharging main belt head wheel cover discharging port, and the distributor is arranged with four outlets. Feed port, distributed at intervals of 90°. The material entering the distributor is divided into 4 streams into the receiving tank, and 4 piles are formed in the receiving tank, which reduces the segregation of materials in the receiving tank. The fixed distributor is installed in the receiving tank, which reduces the height of the string-free material charging system, but the material distribution is changed from the original circular distribution to the four material pile distribution, and the secondary distribution effect of the material particle size is weakened. .

Therefore, it is necessary to develop a distribution device with small volume, simple structure and uniform material distribution to solve the shortcomings of the above two schemes, improve the quality of the blast furnace charge, and improve the material distribution in the blast furnace furnace.

Summary of the invention

In view of the above, an object of the present invention is to provide a feed method for a tank and a feeding device. The feed method of the tank can uniformly arrange the materials in the tank to solve the segregation phenomenon of the material and provide the feed. The material device has the advantages of simple structure, uniform material distribution and environmental protection.

A tank feeding method comprising the following steps:

a, loading the material into a rotating feeding device;

b, The feeding device is provided with at least one discharge opening deviating from the rotation center, and the discharge opening rotates around the rotation center to discharge the material into the material tank in the circumferential direction.

The invention also provides a tank feeding device The utility model comprises a base, a hopper and a driving device. The pedestal is arranged on the top of the blast furnace string tank bellows receiving tank, the hopper is arranged on the base and is rotatably engaged with the base, and the driving device is used for driving the hopper Rotating, the discharge port of the hopper deviates from the center of rotation of the hopper.

further, The hopper is disposed on the base through the slewing bearing, the base is fixedly connected with the inner ring of the slewing bearing, the hopper is fixedly connected with the outer ring of the slewing bearing, and the driven gear is fixedly disposed on the outer ring of the slewing bearing, The power output end of the driving device is provided with a driving gear, and the driving gear and the driven gear are externally meshed;

Further, the bottom surface of the base is sealingly matched with the end surface of the feed inlet of the blast furnace string tank without the bell receiving tank;

further, The base is provided with an annular pipe communicating with the blast furnace string tank without the bell receiving tank, the hopper is located in the annular pipe, and the hopper is provided with a sealing plate, a sealing plate and a ring pipe which are matched with the upper end surface of the annular pipe. A dustproof retaining ring is arranged between the end faces;

further, The upper end edge of the hopper is provided with an annular rubber sealing skirt, and the annular rubber sealing skirt is sealingly matched with the discharge opening of the feeding device feeding the hopper;

Further, the discharge port of the hopper is inclined such that the discharge direction is at an angle with the rotation center line;

Further, the inner wall of the hopper is provided with a wear-resistant lining.

Beneficial effect

The invention relates to a material tank feeding method, wherein a feeding device discharges materials into a material tank in a circumferential direction, and the materials are evenly distributed in the material tank, thereby avoiding segregation of materials. The material tank feeding device of the invention has no hopper for storing material, but only rotates the material into the blast furnace string tank without the bell receiving tank, so that the overall size is small and the structure is simple, and the rotating cloth can ensure entering the receiving tank. The uniformity of the particle size distribution of the material solves the segregation phenomenon of the material, and at the same time, the feeding device of the material tank is sealed with the feeding port of the receiving tank and the discharging port of the feeding device, thereby avoiding the material dust from escaping the material tank. The feeding device causes environmental pollution and is safe and environmentally friendly.

DRAWINGS

 The invention is further described below in conjunction with the drawings and embodiments.

Figure 1 is a schematic view showing the structure of a material tank feeding device of the present invention;

Figure 2 is an enlarged view of the P portion of Figure 1;

Figure 3 is a schematic view showing the installation of a tank feeding device of the present invention.

Embodiments of the invention

1 is a schematic structural view of a material tank feeding device of the present invention; FIG. 2 is an enlarged view of a portion P of FIG. 1; and FIG. 3 is a schematic view showing the installation of a material tank feeding device of the present invention.

In this embodiment, a tank feeding method comprises the following steps:

a, loading the material into a rotating feeding device;

b. The feeding device is provided with at least one discharge opening offset from the rotation center, and the discharge opening rotates around the rotation center to discharge the material into the material tank in the circumferential direction.

The material is loaded into the tank through the rotating discharge port, and the material can be evenly distributed in the tank, thereby solving the material segregation phenomenon.

As shown in the figure, a tank feeding device of the present embodiment comprises a base 1, a hopper 2 and a driving device 3, and the base 1 is disposed at the top of the blast furnace string tank bellows receiving tank 4, The hopper 2 is disposed on the base 1 and is rotatably engaged with the base 1. The driving device 3 is used to drive the hopper 2 to rotate, and the discharge port of the hopper 2 is offset from the center of rotation of the hopper 2. In the tank feeding device of the invention, the hopper 2 does not need to store materials, but only rotates the material into the blast furnace string tank without the bell receiving tank, so that the overall size is small, the structure is simple, and the discharging port is deviated from the hopper 2 The center of rotation forms an annular pile, The rotating fabric ensures the uniformity of the particle size distribution of the material entering the receiving tank and solves the segregation of the material.

In this embodiment, the hopper 2 is disposed on the base 1 through the slewing bearing 5, the base 1 is fixedly connected with the inner ring of the slewing bearing 5, and the hopper 2 is fixedly connected with the outer ring of the slewing bearing 5, and the slewing support A driven gear 6 is fixedly disposed on the outer ring of the bearing 5. The power output end of the driving device 3 is provided with a driving gear 7, and the driving gear 7 and the driven gear 6 are externally meshed. In this embodiment, the gear transmission is high, and the transmission efficiency is high. Of course, other transmission methods, such as pulley or sprocket transmission, can be selected in different embodiments. The drive device 3 can be a drive motor or a hydraulic motor in a specific implementation.

As an improvement to the present embodiment, The bottom surface of the base 1 is sealingly fitted with the end surface of the inlet of the blast furnace string tank without the bell receiving tank 4. The structure can prevent the material dust from escaping from the mating surface bracket of the base 1 and the receiving tank 4 to pollute the environment.

As an improvement to the embodiment, the base 1 is provided with a blast furnace stringer bellless receiving tank 4 The communicating annular tube 1a is located in the annular tube 1a. The hopper 2 is provided with a sealing plate 8 which is matched with the upper end surface of the annular tube 1a. The sealing plate 8 and the end surface of the annular tube 1a are provided with a dustproof retaining ring 9 . The structure can prevent the material dust from entering the slewing bearing 5 and causing damage thereto, and can ensure the flexible rotation of the slewing bearing 5 and prolong the service life.

As a modification of this embodiment, the upper end edge of the hopper 2 is provided with an annular rubber sealing skirt 10 which is in sealing engagement with the discharge opening of the feeding device feeding the hopper 2. The structure can prevent material dust from escaping from the gap between the hopper 2 and the discharge port of the feeding device to pollute the environment.

As a modification of the embodiment, the discharge port 2a of the hopper 2 is inclined such that the discharge direction is at an angle with the rotation center line; the oblique arrangement of the discharge port is advantageous for guiding the material out of the hopper.

As an improvement to the embodiment, the inner wall of the hopper 2 is provided with a wear-resistant lining 11 which is provided to improve the service life of the hopper.

The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art Modifications or equivalents are intended to be included within the scope of the appended claims.

Claims (8)

 A tank feeding method characterized by comprising the steps of: a, loading the material into a rotating feeding device; b, The feeding device is provided with at least one discharge opening deviating from the rotation center, and the discharge opening rotates around the rotation center to discharge the material into the material tank in the circumferential direction. A tank feeding device, comprising: a base, a hopper and a driving device, wherein the base is disposed on a top of a blast furnace string tank without a bell receiving tank, the hopper is disposed on the base and is connected with the base In a rotational fit, the drive device is used to drive the hopper to rotate, and the discharge port of the hopper is offset from the center of rotation of the hopper. A tank feeding device according to claim 2, wherein the hopper is disposed on the base through the slewing bearing, the base is fixedly connected with the inner ring of the slewing bearing, and the hopper and the slewing bearing are externally The ring is fixedly connected, and the driven gear is fixedly disposed on the outer ring of the slewing bearing. The power output end of the driving device is provided with a driving gear, and the driving gear and the driven gear are externally meshed. A tank feeding device according to claim 2, wherein the bottom surface of the base is in sealing engagement with the end surface of the inlet of the blast furnace string tank without the bell receiving tank. A tank feeding device according to claim 2, wherein said base is provided with an annular pipe communicating with the blast furnace string tank bellows receiving tank, said hopper being located in the annular pipe, the hopper A sealing plate is arranged on the upper end surface of the annular tube, and a dustproof retaining ring is arranged between the sealing plate and the end surface of the annular tube. A tank feeding device according to claim 2, wherein the upper end edge of the hopper is provided with an annular rubber sealing skirt, and the annular rubber sealing skirt and the feeding device for feeding the hopper The mouth is sealed. A tank feeding device according to any one of claims 2-6, wherein the discharge opening of the hopper is inclined such that the discharge direction is at an angle to the center line of rotation. A medium tank feeding device according to claim 7, wherein the inner wall of the hopper is provided with a wear-resistant lining.

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