CN216234888U

CN216234888U - Continuous and stable conveying device for gravity ash of blast furnace

Info

Publication number: CN216234888U
Application number: CN202122760402.XU
Authority: CN
Inventors: 颜新; 林祥海; 王贤; 牛立祥; 严渝镪; 吴波; 相威
Original assignee: CISDI Engineering Co Ltd
Current assignee: CISDI Engineering Co Ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-04-08
Anticipated expiration: 2031-11-11

Abstract

The utility model relates to a continuous and stable conveying device for blast furnace gravity ash, belonging to the field of blast furnace ironmaking. The device comprises a gravity ash bin, wherein at least two blowing control units are respectively and independently connected to the gravity ash bin; the blowing control unit comprises a blowing tank and a blowing tank pressure gauge arranged on the blowing tank. The utility model has the advantages that the accurate control of the continuous and stable gravity ash conveying is realized, the stable production of the system can be ensured, the negative influence caused by manual operation can be eliminated, and the automation control level of the system is improved, so that the workload of operators is greatly reduced, and the utility model has obvious technical and economic benefits.

Description

Continuous and stable conveying device for gravity ash of blast furnace

Technical Field

The utility model belongs to the field of blast furnace ironmaking, and relates to a continuous and stable conveying device for blast furnace gravity ash.

Background

The blast furnace can generate a large amount of blast furnace gas carrying a lot of fine-grained furnace burden in the normal production process, wherein the dust is 0-500 mu m, the grains with the grain size larger than 150 mu m account for about 50%, the blast furnace gas is purified by a gravity dust collector, the furnace dust with the grain size larger than 150 mu m in the gas can be deposited, and the furnace dust separated by the gravity dust collector is the blast furnace gravity dust. Most of the traditional processes adopt a humidifying ash discharger to discharge ash and then transport the ash by an automobile, but secondary dust pollution is easily caused due to unsatisfactory humidifying effect in the process of discharging gravity ash from an ash bin of a gravity dust collector to the automobile. In order to solve the secondary dust pollution caused in the ash discharging process, related technical personnel begin to adopt pneumatic conveying to solve the problem of environmental pollution generated in the ash discharging process of the powdery material, but the prior technical scheme is only limited in the pneumatic conveying link of gravity ash to solve the problem of secondary dust pollution, and the technical problems in the aspects of continuous and stable pneumatic conveying, automatic control and the like are not involved.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a continuous and stable conveying device for blast furnace gravity ash, so as to achieve continuous and stable pneumatic conveying.

In order to achieve the purpose, the utility model provides the following technical scheme:

a continuous and stable conveying device for blast furnace gravity ash comprises a gravity ash bin, wherein at least two injection control units are respectively and independently connected to the gravity ash bin; the blowing control unit comprises a blowing tank and a blowing tank pressure gauge arranged on the blowing tank.

Optionally, all the injection control units are connected to the pressure supplementing pipeline and the secondary pressure supplementing pipeline.

Optionally, each blowing control unit is connected to the gravity ash bin through a separate pneumatic shut-off valve.

Optionally, each of the blowing control units is connected to the pressure compensating pipeline through a separate pneumatic valve and a pressure regulating valve.

Optionally, each blowing control unit is connected to the secondary air supply pipeline through a separate pneumatic cut-off valve and an air supply device.

Optionally, a pneumatic cut-off valve, a flow regulating valve and a flowmeter are further connected between the air supply device and the secondary air supply pipeline.

The utility model has the beneficial effects that:

1) the continuous and stable conveying of the gravity ash can be realized, and the uniformity and stability of material conveying are obviously improved;

2) the automatic control level of the system is greatly improved, and the workload of operators is reduced;

3) the system is simple, the technology is reliable, the realization is easy, and the investment cost is low;

4) the method is easy to implement the improvement of the existing blast furnace gravity ash system and has wide application range.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of the overall structure of the present invention.

Reference numerals: 1-gravity ash bin 2-first pneumatic cut-off valve 3-A blowing tank pressure gauge 4-A blowing tank 5-second pneumatic cut-off valve 6-first pressure regulating valve 7-pressure compensating pipeline 8-secondary air compensating pipeline 9-third pneumatic cut-off valve 10-first flow meter 11-first flow regulating valve 12-fourth pneumatic cut-off valve 13-first air compensator 14-second pressure regulating valve 15-fifth pneumatic cut-off valve 16-sixth pneumatic cut-off valve 17-second flow meter 18-second flow regulating valve 19-seventh pneumatic cut-off valve 20-second air compensator 21-B blowing tank 22-B blowing tank pressure gauge 23-eighth pneumatic cut-off valve.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the utility model thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1, a continuous and stable conveying device for gravity ash of a blast furnace is shown, in which two injection control units are provided as an example. The device structure comprises a gravity ash bin 1, an A blowing tank 4 and a B blowing tank 21 are respectively and independently connected to the gravity ash bin 1, the A blowing tank 4 is connected to the gravity ash bin 1 through a first pneumatic stop valve, the B blowing tank 21 is connected to the gravity ash bin 1 through an eighth pneumatic stop valve, an A blowing tank pressure gauge is arranged on the A blowing tank 4, a B blowing tank pressure gauge is arranged on the B blowing tank 21, and the A blowing tank 4 is connected to a pressure compensating pipeline through a second pneumatic stop valve and a first pressure regulating valve; the secondary air supply pipeline 8 is connected with a fourth pneumatic cut-off valve 12, a first air supply device 13, a first flow regulating valve 11, a first flow meter 10 and a third pneumatic cut-off valve 9; the B blowing tank 21 is connected to the pressure supplementing pipeline 7 through a fifth pneumatic stop valve 15 and a second pressure regulating valve 14, and is connected to the secondary gas supplementing pipeline 8 through a seventh pneumatic stop valve 19, a second gas supplementing device 20, a sixth pneumatic stop valve 16, a second flow meter 17 and a second flow regulating valve 18.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. The utility model provides a continuous conveyor that stabilizes of blast furnace gravity ash which characterized in that: the device comprises a gravity ash bin, wherein at least two blowing control units are respectively and independently connected to the gravity ash bin; the blowing control unit comprises a blowing tank and a blowing tank pressure gauge arranged on the blowing tank.

2. The continuous and stable conveying device for the gravitational ash of the blast furnace as set forth in claim 1, characterized in that: all the injection control units are connected to the pressure supplementing pipeline and the secondary air supplementing pipeline.

3. The continuous and stable conveying device for the gravitational ash of the blast furnace as set forth in claim 1, characterized in that: each blowing control unit is connected to the gravity ash bin through an independent pneumatic cut-off valve.

4. The continuous and stable conveying device for the gravitational ash of the blast furnace as set forth in claim 2, characterized in that: each blowing control unit is connected to a pressure supplementing pipeline through an independent pneumatic valve and a pressure regulating valve.

5. The continuous and stable conveying device for the gravitational ash of the blast furnace as set forth in claim 2, characterized in that: every jetting control unit all is connected to secondary tonifying qi pipeline through solitary pneumatic trip valve, air supplement unit.

6. The continuous and stable conveying device for the gravitational ash of the blast furnace as set forth in claim 5, characterized in that: and a pneumatic stop valve, a flow regulating valve and a flowmeter are also connected between the air supply device and the secondary air supply pipeline.