CN2449081Y

CN2449081Y - Multi-transportation bin type pump

Info

Publication number: CN2449081Y
Application number: CN 00257609
Authority: CN
Inventors: 王敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-27
Filing date: 2000-10-27
Publication date: 2001-09-19
Anticipated expiration: 2010-10-27

Abstract

The utility model belongs to the improvement of the coal spray technology of a bin type pump, which is the special equipment of a blast furnace. The concrete improved solution of the utility model is that the number of coal chutes of the existing basic structure are increased to more than 2, generally to 3-6; different caliber corresponds to different coal spray quantity; the aeration structure in the coal chutes is adopted, and therefore, the fluidization quality is higher, the transmission of concentration is increased, the abrasion of the pipelines is reduced, and the control precision and the regulating speed of coal spray quantity are increased. One pump of the utility model can provide concentrated phase coal powder for a plurality of blast furnace spray stations, and the utilization rate of the equipment and the operation quality has larger improvement.

Description

The novel cone pump of multiplexing

The utility model belongs to a middle device that uses in a kind of special equipment, particularly blast furnace PCI technology of granular material transmission.

Metallurgy industry and cement industry all relate to coal dust to be made and the coal powder injection burning process.Making from coal dust that the back carries to injecting station is a key link of wherein using, coal dust fluidised form gasification need be transferred mutually could guarantee to spray coal dust all even control freely.Cone pump promptly is that the coal dust fluidization becomes the key equipment that concentrated phase transmits.But the coal dust after fluidization is handled has flow behavior, thereby can be transported to the injecting station of blast furnace under the pressure of cone pump by pipeline.Fluidised maintenance is the assurance of good transmission, and for making the maintenance fluidised form of coal dust in the transmission course, the coal dust that present applied technology needs to enter coal chute is added high pressure draught in the transmission process outside the storehouse, to guarantee the fluidization of coal dust under the respective concentration.Tonifying Qi is incompatible to the coal powder injection specification requirement outside single conveying of taking at present and the storehouse, when the quantitative changeization of particularly dusting is big, it adapts to regulates slowly, high-quality control procedure in the unfavorable modern production, particularly simultaneously when the pulverized coal injection of different injecting coal quantity demands, its control and conversion are very complicated, do not fit into need of production practice.

The purpose of this utility model provides a kind of multiplex new-type cone pump, with quick adjustment that adapts to the Coal powder spray amount or the blast furnace work of supplying with a plurality of different needs injecting coal quantities simultaneously.

Improvement project of the present utility model is on the structure of original tubbiness warehouse, and Cang Ding and the feeding inlet structure of storing Pulverized Coal Bin in the reservation work as it and replenish coal dust when the cone pump material level reaches certain position automatically in pump.Be provided with fluidization air chamber and fluid bed at the bottom of the storehouse, gases at high pressure form coal dust boiling fluidization from the fluid bed ejection after entering air chamber by pipeline, form the concentrated phase fluidised form.Coal chute is set above fluid bed, and under the pressure of coal dust and high pressure draught, the fluidization coal dust enters coal chute and transfers to injecting station.The new organization plan that improved plan is taked is in the direct tonifying Qi in the coal feed point place of coal chute end, forms the concrete measure of tonifying Qi in the storehouse, makes the coal dust that enters coal chute keep better fluidization.And the number of coal chute is increased to more than 2.The scheme that reality is executed is that 3-6 coal chute is directly arranged in the fluid bed top, evenly distributes, and each coal chute all walks abreast blowdown pipe is set, and the effective diameter of each coal chute is all variant, to adapt to the needs of different flow transmission.Also can adapt to the big numerical value change adjustment of coal-feeding quantity.

How further specify goal of the invention of the present utility model below in conjunction with accompanying drawing realizes:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is interior making-up air device schematic diagram.

Wherein 1 represent the tubbiness warehouse, the 1A representative connects the charging aperture of Pulverized Coal Bin, 1B is the fluidization air chamber, and 2 is fluid bed, and 3 is high-pressure air pipe, 4 is coal chute, 5 represent the electromagnetic type control valve, and the filtering material that 4A forms for the metal material sintering, 4B are blowdown pipe, 4C is the sealing locating sleeve, and 6 is the sensor of caesium-137 ray level-sensing device.

Interior gas compensating type coal chute 4 is one of key improvements of the present utility model, the structure that it adopted is to inlay the filtering material 4A of a metal material sintering on the distolateral wall of the coal powder entrance of coal chute 4, upright side by side blowdown pipe 4B forms by seal-packed sleeve pipe 4C location.The high pressure draught that blowdown pipe 4B blows out not only can be mended into the tolerance that enters coal chute from coal chute 4 sidewalls, and makes the coal dust material that enters pipeline enter better fluidized state.Can realize by adjusting the Coal powder spray amount is finely tuned simultaneously to air compensation.Cooperate the setting of the different coal chutes of many bores, the amount of dusting adjusting and the fine adjustments that can finish large span combine, implement accurate fast regulation and control, performance accuracy is improved greatly, simultaneously can also supply concentrated phase different coal dusts respectively, utilization rate of equipment and installations is improved greatly to the blast furnace of a plurality of different amounts.

The every coal chute 4 of this novel cone pump is all mixed independently electromagnetic type adjusting pump.By the automatic adjusting of cpu control circuit, make the utilization rate and the bigger raising of operational quality of whole device.Usually set up caesium-137 ray level sensor 6 that corresponding information is imported CPU in the warehouse outside, can realize the automation control of whole system, reach higher efficient and control accuracy.

The utility model design and the cone pump made can transmit the coal dust of different discharge rates simultaneously to 2-3 seat blast furnace, use easy to adjust, the control accuracy height, can realize the concentrated phase conveying, air consumption reduces greatly, and the pipeline abrasion is little, makes the overall operation cost that by a relatively large margin decline be arranged.

Claims

1, the novel cone pump of a kind of multiplexing, tubbiness warehouse (1) top is provided with and stores the charging aperture (1A) that Pulverized Coal Bin links to each other, the bottom is provided with fluidization air chamber (1B) and fluid bed (2), air chamber (1B) is communicated with high-pressure air source, fluid bed (2) top is provided with convey coal pipe blast-furnace coal powder injection station outside the pump storehouse, it is characterized in that being located at fluid bed top coal chute and take interior gas compensating type coal chute (4), set coal chute (4) is more than 2.

2,, it is characterized in that set interior gas compensating type coal chute (4) is 3-6, all supporting high pressure tonifying Qi of each coal chute (4) pipeline according to the said novel cone pump of claim 1.

3, according to the said novel cone pump of claim 1, gas compensating type coal chute (4) is inlaid with the filtering material (4A) of metal sintering in it is characterized in that at coal powder entrance place sidewall, and sealing locating sleeve (4C) parcel is arranged, blowdown pipe (4B) inserts in the sealing locating sleeve (4C), forms gas compensating type structure in the sidewall of coal chute (4) termination.

4,, it is characterized in that all independent electromagnetic type control valve (5) that is equipped with of gas compensating type coal chute (4) in every pipe according to claim 1 or 2 said novel cone pumps.

5,, it is characterized in that warehouse (1) is outside equipped with caesium-137 ray level-sensing device sensor (6) according to the said novel cone pump of claim 1.