CN214747235U

CN214747235U - Sintering machine air box micro-negative pressure ignition box separation adjusting device

Info

Publication number: CN214747235U
Application number: CN202121023763.XU
Authority: CN
Inventors: 李楠
Original assignee: Qinhuangdao Lanrong Machinery Equipment Co ltd
Current assignee: Qinhuangdao Lanrong Machinery Equipment Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-11-16
Anticipated expiration: 2031-05-13

Abstract

The utility model relates to the technical field of iron powder ore smelting, in particular to a sintering machine air box micro-negative pressure ignition box-separating adjusting device, which can accurately adjust the negative pressure of each air box, so that an even negative pressure level is maintained in the whole ignition furnace, and the sintering is more even; the main discharging pipe discharges materials independently, so that the discharging is easy, the fault discharging condition guarantee is enhanced, and the use safety performance is improved; the ignition furnace is arranged above the trolley, a plurality of air boxes are arranged below the trolley, the air boxes are sequentially arranged, the arrangement area of the air boxes is right opposite to the lower part of the ignition furnace, the lower end of each air box is connected with a main discharging pipe, and the main discharging pipe discharges materials through a discharging valve; every bypass pipeline is all seted up to the lateral part of bellows, all sets up the wind pressure governing valve on every bypass pipeline, the end and the blanking union coupling of bypass pipeline, set up the relief valve on the blanking pipe, the end and the convulsions of blanking pipe are responsible for and are linked together.

Description

Sintering machine air box micro-negative pressure ignition box separation adjusting device

Technical Field

The utility model relates to a technical field that iron powder ore smelted especially relates to a sintering machine bellows slight negative pressure ignition branch case adjusting device.

Background

Iron powder ore can not directly enter a blast furnace for smelting, and the iron powder ore can only be smelted by sintering the iron powder ore into sintered ore through a sintering process. The process of sintering iron powder ore is that the iron powder ore is generally conveyed to a distributing device by a belt and then is arranged on a trolley by the distributing device, the trolley passes through an ignition furnace above the trolley at a constant speed by a conveying device, the ignition furnace passes through an ignition device, and the trolley is ignited when passing by, and the iron ore is burned by downward flame spraying to sinter the iron ore. Because the ignition furnace is arranged above the trolley, as is well known, the flame burns upwards during ignition, and the iron ore below needs to be burnt, so that negative pressure is formed below, the flame is downwards pumped, the iron ore can be better sintered, and the fuel utilization rate is improved. The negative pressure during ignition directly determines the ignition consumption level of the sinter, and the excessive negative pressure can influence the strength of the sinter, cause a large amount of return ores and increase the consumption of fuel; the over-low negative pressure can cause the overflow of combustion heat in the hearth, which causes heat waste, influences the safety of the surrounding environment and causes incomplete sintering of the iron powder ore. Therefore, the negative pressure value of the sintering ignition furnace has very important significance, and cannot be large or small, so that the value of the negative pressure value is required to be accurately adjusted.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a sintering machine bellows is little negative pressure to igniteed branch case adjusting device who carries out accurate negative pressure to each bellows and adjusts makes and maintains an even negative pressure level in the whole ignition furnace.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

the utility model discloses a sintering machine bellows micro-negative pressure ignition branch case adjusting device, including setting up the ignition furnace above the platform truck, set up a plurality of bellows below the platform truck, a plurality of said bellows arrange in proper order, its range region is just to the below of ignition furnace, the lower extreme of bellows connects main discharge pipe, and main discharge pipe unloads through the discharge valve; every bypass pipeline is all seted up to the lateral part of bellows, all sets up the wind pressure governing valve on every bypass pipeline, the end and the blanking union coupling of bypass pipeline, set up the relief valve on the blanking pipe, the end and the convulsions of blanking pipe are responsible for and are linked together.

Preferably, the bypass pipeline comprises a connecting pipe connected with the side part of the air box, the other end of the connecting pipe is connected with a vertical straight pipe through an elbow, and the lower end of the straight pipe is connected with the blanking pipe.

Preferably, the down pipe is tapered.

Preferably, a vibration motor is installed on the side wall of the blanking pipe.

Preferably, the wind pressure regulating valve regulates the wind pressure of each wind box to keep the wind pressure under the ignition furnace at-5 to-6.5 KPa, so as to meet the micro-negative pressure ignition requirement.

Compared with the prior art, the beneficial effects of the utility model are that: the side walls of the lower air boxes of all ignition furnaces are provided with a bypass pipeline, the air pressure of each air box is adjusted through an air pressure adjusting valve, and each air box is provided with the adjusting valve and can be adjusted according to different positions of the air box, so that each position can keep the same negative pressure value, a uniform negative pressure value is kept in the ignition furnace, and the sintering is more uniform; the lower part of the air box is connected with discharge through a blanking pipe, the discharge valve is controlled under the control of the discharge pipe, the discharge valve is kept normally open, and the maintenance can be closed when in failure; the utility model has simple structure principle, easy processing and manufacture, fast reconstruction period, effectively controls the micro negative pressure value, and finely adjusts each point air box, thereby increasing the sinter output, reducing the ore return amount, improving the sinter quality and improving the energy utilization rate; the main discharging pipe discharges materials independently, the discharging is easy, the fault discharging condition guarantee is enhanced, and the use safety performance is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic side view of an embodiment of the present invention;

reference numerals: 1-an ignition furnace; 2-an air box; 3-pipe connection; 4-bending the pipe; 5-straight pipe; 6-wind pressure regulating valve; 7-a blanking pipe; 8-a vibration motor; 9-a discharge valve; 10-air draft main pipe; 11-a discharge valve; 12-trolley.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Along with the development of the technology, the productivity of the sintering machine is increased, the ignition furnace is also increased, the area of the air box right below the ignition furnace is also increased, and the negative pressure formation has more rigorous requirements, as shown in fig. 1 to 2, the micro negative pressure ignition box-separating adjusting device for the air box of the sintering machine, provided by the embodiment of the utility model, comprises the ignition furnace 1 arranged above a trolley 12, wherein a plurality of air boxes 2 are arranged below the trolley 12, the air boxes 2 are divided into two symmetrical rows and are sequentially arranged, the arrangement area of the air boxes is right below the ignition furnace 1, the lower end of each air box 2 is connected with a main discharging pipe, and the main discharging pipe is discharged through a discharging valve 11 and conveyed to a recovery belt; each air box 2 is provided with a bypass pipeline at the outer side, each bypass pipeline is provided with a wind pressure regulating valve 6, the wind pressure regulating valve 6 regulates the wind pressure of each air box, and each air box is provided with a regulating valve which can be regulated respectively according to different positions of each air box, so that each position can keep the same negative pressure value, a uniform negative pressure value is kept in the ignition furnace 1, and the sintering is more uniform; the tail ends of the two rows of bypass pipelines are respectively connected with the blanking pipes 7 on the two sides, the blanking pipes 7 are provided with discharge valves 9, and the tail ends of the blanking pipes 7 are communicated with an air draft main pipe 10; the bypass pipeline can be set into any suitable shape according to the actual working condition requirement; the discharge valve 9 controls discharge, the discharge valve 9 is normally opened, and the maintenance can be closed when the fault occurs; the air pressure of each air box 2 is controlled by the air draft main pipe 10 through the air pressure adjusting valve 6, so that the iron ore on the trolley is uniformly sintered.

In the embodiment, the bypass pipeline comprises a connecting pipe 3 in the horizontal direction connected with the side part of the air box 2, the other end of the connecting pipe 3 is connected with a vertical straight pipe 5 through an elbow 4, and the lower end of the straight pipe 5 is connected with a blanking pipe 7; the blanking pipe 7 is conical, the vibration motor 8 is installed on the side wall of the blanking pipe 7, and in a fault state, if too much iron powder ore enters, the material can be discharged quickly through the vibration motor 8 when the material is difficult to discharge; the wind pressure regulating valve 6 regulates the wind pressure of each wind box 2, so that the wind pressure under the ignition furnace 1 is kept between-5 KPa and-6.5 KPa, and the micro-negative pressure ignition requirement is met.

The utility model discloses sintering machine bellows micro negative pressure ignition branch case adjusting device of embodiment, when it was used, when platform truck 12 passed through ignition furnace 1, ignition furnace 1 was igniteed through the ignition, and downward flame projecting burning iron ore was sintered to it, convulsions were responsible for 10 and is passed through wind pressure regulating valve 6 and control the wind pressure of every bellows 2, made it keep the wind pressure under ignition furnace 1 at-5-, -6.5KPa, satisfied micro negative pressure ignition requirement; the discharge valve 9 controls the discharge of partial materials in the wind suction belt in the bypass pipeline, the discharge valve 9 is normally opened, and the maintenance can be closed when the fault occurs; the main discharging pipe discharges materials through a discharging valve 11 and conveys the materials to a recovery belt.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A sintering machine air box micro-negative pressure ignition box separation adjusting device comprises an ignition furnace (1) arranged above a trolley (12), and is characterized in that a plurality of air boxes (2) are arranged below the trolley (12), the air boxes (2) are sequentially arranged, an arrangement area of the air boxes is right opposite to the lower part of the ignition furnace (1), the lower end of each air box (2) is connected with a main discharging pipe, and the main discharging pipe discharges materials through a discharging valve (11); every bypass pipeline is all seted up to the lateral part of bellows (2), all sets up wind pressure regulating valve (6) on every bypass pipeline, the end and the blanking pipe (7) of bypass pipeline are connected, set up relief valve (9) on blanking pipe (7), the end and the convulsions of blanking pipe (7) are responsible for (10) and are linked together.

2. The micro-negative pressure ignition box-separating adjusting device for the air box of the sintering machine as claimed in claim 1, wherein the bypass pipeline comprises a connecting pipe (3) connected with the side part of the air box (2), the other end of the connecting pipe (3) is connected with a vertical straight pipe (5) through an elbow (4), and the lower end of the straight pipe (5) is connected with the blanking pipe (7).

3. The sintering machine windbox micro negative pressure ignition branch box adjusting device according to claim 2, characterized in that the blanking pipe (7) is conical.

4. The micro-negative pressure ignition branch box adjusting device for the sintering machine windboxes according to claim 3, wherein a vibration motor (8) is installed on the side wall of the blanking pipe (7).

5. The micro-negative pressure ignition box-separating adjusting device for the sintering machine bellows of claim 4, characterized in that the wind pressure adjusting valve (6) adjusts the wind pressure of each bellows (2) to keep the wind pressure under the ignition furnace (1) at-5 to-6.5 KPa, so as to meet the micro-negative pressure ignition requirement.