CN211546593U

CN211546593U - Powder fluidizing device with blowing-assisting function

Info

Publication number: CN211546593U
Application number: CN202020043877.XU
Authority: CN
Inventors: 张波
Original assignee: CISDI Engineering Co Ltd
Current assignee: CISDI Engineering Co Ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-09-22
Anticipated expiration: 2030-01-09

Abstract

The utility model discloses a powder fluidizer of function is blown in area helps belongs to powder fluidization equipment technical field, locate the powder pipe that stretches out in the shell and at the small-mouth end of shell toper and locate the inboard and suit in the fluidization board outside the powder pipe of shell including being conical shell, cover, fluidization board below and with shell and powder pipe enclosure synthetic fluidization gas chamber, top be the fluidization reacting chamber, be equipped with on the shell with fluidization gas chamber intercommunication and be a plurality of fluidization pipes that the annular was arranged, be equipped with on the powder pipe with fluidization gas chamber intercommunication and be a plurality of blowpipes of helping of annular arrangement. The utility model discloses can further improve the mobile kinetic energy after the powder fluidization, improve the mobility of powder.

Description

Powder fluidizing device with blowing-assisting function

Technical Field

The utility model belongs to the technical field of powder fluidizing device, concretely relates to area helps powder fluidizer who blows function.

Background

The molten iron desulphurization is an important link in steel smelting and has an important effect on improving the quality of molten steel. The blowing desulfurization is a desulfurization process widely applied in molten iron desulfurization, and a desulfurizing agent is added into molten iron through a blowing system to participate in desulfurization reaction. The blowing system mainly comprises a powder bin, a blowing tank, a conveying pipeline, a valve and the like, wherein powder is added into the blowing tank from the powder bin and is added into the hot metal ladle from the blowing tank by adopting a pneumatic conveying mode. In the process, a powder fluidization device at the bottom of the powder bin or the blowing is very important, and plays a role of introducing fluidization gas into a fluidization reaction chamber and fluidizing the powder to form fluidized gas-solid two-phase flow, and the powder is conveyed out through a conveying pipeline after being fluidized.

However, in the prior blowing system, the fluidization and transportation of the powder have the following problems:

1) the gas pressure and flow in each area inside the fluidizing gas chamber are unstable, which causes uneven mixing of powder and gas in the fluidizing reaction chamber, unstable fluidizing state, failure to keep the powder in a suspended state all the time, and failure to form stable gas-solid two-phase flow. For the remoistened materials, the powder can be agglomerated and can not be fluidized.

2) Because the powder conveying pipe is long in road line, a plurality of valves and large in pipeline resistance loss, the flowability of the fluidized powder is reduced, and the powder blanking speed is influenced.

In the actual production process, one of the main faults of injection desulfurization is that the injection blanking is not smooth, so that the material of a conveying pipeline and a spray gun is blocked. Therefore, on the basis of the existing equipment, appropriate technical improvement is carried out, the fluidization effect of powder materials and the flowability in the conveying process are improved, and the method has great practical significance for reducing the failure rate in the production process and improving the operation efficiency of blowing desulfurization.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a powder fluidizing device with blowing assisting function, which can increase the flowability of the powder after fluidization by blowing assisting function when the powder fluidizing state is stable.

The utility model discloses a realize through following technical scheme:

the utility model provides a pair of powder fluidizer of function is blown in helping in area, locate the shell and at the powder pipe that the small-mouth end of shell toper stretches out and locate the inboard and suit of shell in the fluidization board outside the powder pipe including being conical shell, cover, fluidization board below and with shell and powder pipe enclosure synthetic fluidization gas chamber, top be the fluidization reacting chamber, be equipped with on the shell with fluidization gas chamber intercommunication and be a plurality of fluidization pipes that the annular was arranged, be equipped with on the powder pipe with fluidization gas chamber intercommunication and be a plurality of blowpipes of helping that the annular was arranged.

Further, the blowing assisting pipes are arranged in 10-16 numbers, are arranged at an inclination angle of 35-55 degrees, and the inclination direction is consistent with the flow direction of the powder material.

Further, the number of the fluidization tubes is 3 to 6, and the fluidization tubes are arranged perpendicular to the shell.

Furthermore, an air inlet baffle plate used for preventing the airflow from directly impacting the powder material is arranged on the inner wall of the shell and above the fluidization air inlet.

Further, the powder dust collector also comprises an inner shell arranged on the periphery of the fluidization plate and a partition plate arranged on the outer shell and used for supporting the inner shell and surrounding the powder pipe. The installation strength of the fluidization plate can be enhanced, and the service life of the fluidization plate is prolonged.

Furthermore, a reinforcing plate is further arranged on the shell.

Furthermore, the shell is also provided with a separation plate which surrounds the powder pipe and supports the fluidization plate and the blowing assisting pipe.

Further, the fluidization plate is a stainless steel sintering net.

By adopting the scheme, the annular isolation plate is arranged between the outer shell and the inner shell of the fluidization device, the fluidization plate is arranged on the inner shell of the fluidization device, and the fluidization plate is made of the stainless steel sintering net. And a fluidizing gas chamber is formed among the housing, the partition plate and the fluidizing plate. A plurality of fluidization tubes are arranged on the housing perpendicularly to the housing, with an angle of 90 DEG between each fluidization air inlet. 12 blowing-assisting pipes are arranged between the isolation plate and the powder pipe, so that an annular blowing-assisting device is formed, and each blowing-assisting pipe is inclined at an angle of 45 degrees and the inclined direction is along the flow direction of the powder material. A conical fluidizing reaction chamber is formed among the powder feeding port, the inner shell and the fluidizing plate.

The utility model has the advantages that:

1. the gas source for the annular blowing aid device of the utility model is the gas in the fluidized gas chamber. After the material is fluidized by the fluidized reaction chamber, the material is further blown by the annular blowing aid in the process of entering the conveying pipeline through the powder outlet, so that the flowing kinetic energy of the powder can be increased, partial resistance loss generated by the conveying pipeline and a valve is offset, the flowability of the powder is effectively improved, and the blanking smoothness of the powder is improved.

2. The utility model discloses increased the helping after the fluidization and blown the function, can effectively improve the mobility that the powder was carried after the fluidization. The powder flows out in a gas-solid two-phase flow state after being fluidized, the powder outlet of the fluidizing device is generally directly connected with a pipeline and a cut-off valve, if the fluidizing device is used under a blowing tank, a powder flow regulating valve is arranged behind the cut-off valve, and the resistance generated by the links can obviously reduce the kinetic energy of the powder, thereby reducing the flowability of the powder. After the blowing-assisting function is added, the flow kinetic energy of the gas-solid two-phase flow of the powder at the outlet is effectively increased, so that partial resistance loss of a pipeline and a valve is offset, and the flowability of the powder in the conveying process is improved.

3. The utility model discloses having optimized the fluidization gas intake pipe and having arranged, having made pressure and flow in the fluidization air chamber more stable, can effectual intensive fluidization effect, improved fluidization effect. The number of the fluidizing gas inlets is 4, the mutual angle is 90 degrees, and the fluidizing gas inlets are annularly arranged. The gas enters the fluidizing gas chamber from all directions to keep the stability of the gas flow to the maximum extent, so that the material in the fluidizing reaction chamber area is uniformly mixed with the gas to form stable gas-solid two-phase flow, thereby improving the stability of the powder fluidizing process.

Additional advantages, objects, and features of the invention 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 invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

reference numerals: the device comprises a fluidization plate 1, an inner shell 2, an outer shell 3, a partition plate 4, a powder pipe 5, a blowing assisting pipe 6, a fluidization gas chamber 7, a fluidization pipe 8, a gas inlet baffle 9, a fluidization reaction chamber 10 and a reinforcing plate 11; a powder inlet N1, a fluidization air inlet N2, a powder outlet N3 and a blowing-assisting air inlet N4.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit 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, and the features in the following embodiments and examples may be combined with each other without conflict.

As shown in fig. 1 and 2, the powder fluidizing device with blowing-assisting function provided in this embodiment is mainly suitable for fluidizing powder materials in a blowing desulfurization system in steel smelting, such as fluidizing materials at the bottom of a powder bin and a blowing tank. The device mainly comprises an auxiliary blowing pipe 6, a fluidizing gas chamber 7, a fluidizing reaction chamber 10, a fluidizing pipe 8, an outer shell 3, an inner shell 2, a fluidizing plate 1, a partition plate 4, a powder pipe 5 and the like which are annularly arranged. The blowing-assisting pipe 6 is arranged between the isolation plate 4 and the powder pipe 5 to communicate the powder pipe and the fluidizing gas chamber, the angle of inclination of the blowing-assisting pipe is 45 degrees, and the direction of inclination of a blowing-assisting air port N4 of the blowing-assisting pipe is along the flow direction of the powder. The fluidizing gas chamber is formed into a ring-shaped gas chamber by a shell 3, a partition plate 4 and a fluidizing plate 1. A powder inlet N1 of the powder pipe 5 is connected with the bottom of a powder bin or a blowing tank to form a conical fluidized reaction chamber, a fluidized gas inlet N2 of the fluidized pipe is connected with an external gas pipeline, and a powder outlet N3 of the powder pipe is connected with a conveying pipeline. Compared with the prior art, the device increases the blowing assisting function after the powder is fluidized, can further improve the flow kinetic energy after the powder is fluidized, and improves the flowability of the powder. Meanwhile, the arrangement of the fluidizing gas inlets is optimized, the stability of the gas in the fluidizing gas chamber is improved, the material in the fluidizing reaction chamber is uniformly mixed with the gas, a stable gas-solid two-phase flow is formed, and the fluidizing effect of the powder is effectively improved.

Specifically, an annular isolation plate 4 is arranged between the outer shell 3 and the inner shell 2, a fluidization plate 1 is arranged on the inner shell 2, and the fluidization plate 1 is made of stainless steel sintering net. A fluidizing gas chamber is formed between the housing 3, the partition plate 4 and the fluidizing plate 1. Four fluidization tubes 8 are arranged on the housing 3 and are perpendicular to the housing 3, the angle between each fluidization air inlet being 90 °. 12 blowing-assisting pipes 6 are arranged between the isolation plate 4 and the powder pipe, so that an annular blowing-assisting device is formed, and each blowing-assisting pipe is inclined at an angle of 45 degrees and is inclined along the flow direction of the powder. The powder inlet N1, the inner shell 2 and the fluidization plate 1 form a conical fluidization reaction chamber 10. A reinforcing plate 11 is arranged between the inner shell and the outer shell to form good support for powder fluidization. The powder inlet N1 is connected with the powder bin or the blowing tank feed opening, the fluidization pipe is connected with an external air source pipeline, and the powder outlet N3 is connected with a powder conveying pipeline, so that a complete fluidization feeding system is formed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The powder fluidizing device with the blowing assisting function is characterized by comprising a conical shell (3), a powder pipe (5) which is sleeved in the shell and extends out of a conical small opening end of the shell, and a fluidizing plate (1) which is arranged on the inner side of the shell and sleeved outside the powder pipe, wherein a fluidizing gas chamber (7) is formed below the fluidizing plate and surrounded by the shell and the powder pipe, a fluidizing reaction chamber (10) is arranged above the fluidizing plate, a plurality of fluidizing pipes (8) which are communicated with the fluidizing gas chamber and are annularly arranged are arranged on the shell, and a plurality of blowing assisting pipes (6) which are communicated with the fluidizing gas chamber and are annularly arranged are arranged on the powder pipe.

2. The powder fluidizing apparatus with blowing-assisting function according to claim 1, wherein said blowing-assisting pipes are provided in an amount of 10 to 16, are arranged at an inclination of 35 ° to 55 °, and are inclined in a direction coincident with a flow direction of the powder material.

3. The powder fluidizing device with blowing assisting function according to claim 1, wherein said fluidizing pipes are provided in 3 to 6 number, each being provided perpendicularly to said housing.

4. A powder fluidization device with a blowing-assist function according to claim 3, wherein an air inlet baffle (9) for preventing the air flow from directly impacting the powder is provided on the inner wall of the housing above the fluidization air inlet.

5. A powder fluidizing apparatus having a blowing aid function according to claim 1, further comprising an inner casing (2) provided on the periphery of the fluidizing plate and a partition plate (4) provided on the outer casing for supporting the inner casing and surrounding the powder duct.

6. A powder fluidization device with blowing-assist function according to claim 5, wherein a reinforcing plate (11) is further provided on said housing.

7. A powder fluidization device with blowing aid according to claim 5, wherein said housing is further provided with said partition plate surrounding said powder duct and supporting said fluidization plate and blowing aid tube.

8. The powder fluidization device with blowing-assist function according to claim 1, wherein said fluidization plate is a stainless steel sintered mesh.