CN213021010U - Double-medium coupling injection device of sleeve injection type and double-medium coupling injection sintering machine - Google Patents

Abstract

A sleeve injection type double-medium coupling injection device and a double-medium coupling injection sintering machine are provided, wherein the injection device comprises: a hybrid directional injection pipe; the mixed directional blowing pipe comprises an inner spray pipe and an outer cover spray pipe; the outer spray pipe cover is arranged on the outer side of the inner spray pipe; the inner spray pipe and the outer cover spray pipe are horizontally arranged above a trolley of the sintering machine; the inner spray pipe is provided with a spray hole towards one side of the trolley; a nozzle is arranged on one side of the outer cover spray pipe towards the trolley; the material sprayed out from the spray holes passes through the nozzles and enters the sintered material layer; steam or fuel gas is introduced into the inner spray pipe; and fuel gas or steam is introduced into the outer cover spray pipe. The technical scheme that this application provided can make spun steam or gas mix and fill the sintering charge level of sintering machine platform truck, promotes the water gas reaction of sintering machine charge level, improves the sintering quality of sintering machine.

Description

Double-medium coupling injection device of sleeve injection type and double-medium coupling injection sintering machine

Technical Field

The utility model relates to a blowing device, in particular to a sleeve injection type double-medium coupling blowing device, belonging to the technical field of sintering blowing; the utility model discloses still relate to a two medium coupling jetting sintering machines.

Background

The sintering process is a key link in the iron-smelting process, and the principle is that various powdery iron-containing raw materials are mixed with proper amount of fuel and flux, proper amount of water is added, after mixing and pelletizing, the materials are subjected to a series of physical and chemical changes on sintering equipment, and are sintered into blocks, so that the blocks are sent to a blast furnace for the next working procedure. Sintering is a main raw material processing technology for iron and steel smelting in China, and more than 75% of blast furnace raw materials come from sintered ores. But sintering is a typical high energy consumption and high pollution industry, the energy consumption is the second place in the steel industry, and the pollution load is 40 percent of the steel industry and is the top place. With the increasingly strict environmental requirements, research and development of high-energy-efficiency low-emission sintering clean production technology and equipment thereof have great significance for supporting the upgrade of the steel industry in China and realizing green sustainable development.

The gas injection reinforced sintering technology is a relatively advanced green sintering modification technology at the present stage. It is used to replace part of added coke powder by spraying fuel gas diluted to combustion concentration to the surface of sintering material layer after ignition section, so that part of fuel enters the sintering material layer from top and burns near the upper part of combustion zone. The technology can effectively avoid overhigh sintering peak temperature and prolong the duration of the beneficial sintering temperature, thereby improving the strength and the reduction degree of the sintered ore, reducing the coke ratio during the production of a blast furnace and effectively reducing CO in the whole production process₂The amount of discharge of (c).

Similar to gas injection, the steam injection reinforced sintering technology is characterized in that high-temperature normal-pressure steam at 250-300 ℃ is injected at the middle rear part of a sintering machine and is sucked into a sintering material layer, so that the steam injection reinforced sintering technology has the effects of generating water-gas reaction with carbon particles in the material layer and reinforcing the combustion efficiency of the carbon particles on the one hand, and has the effects of guiding air on the material surface and increasing the air suction amount on the other hand, and the emission amount of CO and dioxin in the sintering process can be effectively reduced.

Aiming at the two technologies, the industry professionals propose to combine coal gas and steam and implement double-medium coupling injection on the charge level so as to achieve the effect of 1+1> 2. Although a plurality of patent technologies are already provided in the field of sintering charge level double-medium coupling injection, the problems of low uniform mixing rate, uneven medium distribution in a charge layer and the like still exist,

therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a sleeve injection type dual-medium coupling injection device, which can mix and fill injected steam or gas into a sintering charge level of a sintering machine trolley, promote a water gas reaction of the sintering machine charge level, and improve sintering quality of the sintering machine.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model aims to a can make spun steam or gas mix and fill the sintering charge level into the sintering machine platform truck, promote the water gas reaction of sintering machine charge level, improve the sintering quality of sintering machine. The utility model provides a double-medium coupling jetting device of sleeve pipe injection formula, this jetting device includes: a hybrid directional injection pipe; the mixed directional blowing pipe comprises an inner spray pipe and an outer cover spray pipe; the outer spray pipe cover is arranged on the outer side of the inner spray pipe; the inner spray pipe and the outer cover spray pipe are horizontally arranged above a trolley of the sintering machine; the inner spray pipe is provided with a spray hole towards one side of the trolley; a nozzle is arranged on one side of the outer cover spray pipe towards the trolley; the material sprayed out from the spray holes passes through the nozzles and enters the sintered material layer; steam or fuel gas is introduced into the inner spray pipe; and fuel gas or steam is introduced into the outer cover spray pipe.

According to a first embodiment of the utility model, provide a sleeve pipe injection formula bimedium coupling jetting device:

a double-pipe-jet dual-media-coupled blowing device, the blowing device comprising: a hybrid directional injection pipe; the mixed directional blowing pipe comprises an inner spray pipe and an outer cover spray pipe; the outer spray pipe cover is arranged on the outer side of the inner spray pipe; the inner spray pipe and the outer cover spray pipe are horizontally arranged above a trolley of the sintering machine; the inner spray pipe is provided with a spray hole towards one side of the trolley; a nozzle is arranged on one side of the outer cover spray pipe towards the trolley; the material sprayed out from the spray holes passes through the nozzles and enters the sintered material layer; steam or fuel gas is introduced into the inner spray pipe; and fuel gas or steam is introduced into the outer cover spray pipe.

Preferably, the number A of the mixing and directional blowing pipes is 2-100; a mixed directional blowing pipes form a group of mixed directional blowing pipe rows.

Preferably, the blowing device further includes: the steam branch pipe, the steam main pipe, the gas branch pipe and the gas main pipe; the steam main pipe is arranged outside the sintering machine cover body; the branch steam pipe of the steam main pipe is communicated with the feed inlet of the inner spray pipe/the outer cover spray pipe; the gas main pipe is arranged outside the sintering machine cover body; the branch gas pipe of the main gas pipe is communicated with the feed inlet of the outer cover spray pipe/the inner spray pipe.

Preferably, the blowing device further includes: a branch pipe regulating valve; the branch pipe regulating valve is arranged on the steam branch pipe and/or the fuel gas branch pipe.

Preferably, the blowing device further includes: an internal-spraying booster pump; the inner-spraying booster pump is arranged at the upstream of the feeding hole of the inner spraying pipe.

Preferably, the blowing device further includes: an external-spraying booster pump; the outer spraying booster pump is arranged at the upstream of the feeding hole of the outer cover spraying pipe.

Preferably, the mixing and directing blowing pipe further comprises: and the pressurizing nozzle is arranged at the spray hole.

Preferably, the blowing device further includes: a charge level CO detector; the charge level CO detector is arranged on a sintering trolley, and a probe of the charge level CO detector is positioned at a sintering material on the trolley.

Preferably, the nozzle is circular, and the nozzle hole is located right above the nozzle in the vertical direction.

Preferably, the nozzle is rectangular, and the spray holes are arranged right above the nozzle in the vertical direction.

Preferably, the mixing and directing blowing pipe further comprises: a mixed air area adjusting mechanism; the air mixing area adjusting mechanism is arranged at the nozzle; the air mixing area adjusting mechanism is used for adjusting the air outlet area at the nozzle.

According to the utility model discloses a second embodiment provides a two medium coupling jetting sintering machines:

a dual media coupled blown sintering machine, the sintering machine comprising: the double-medium coupling injection device comprises a sleeve injection type double-medium coupling injection device, a trolley and a cover body; the trolley is arranged in the cover body, and the sleeve injection type double-medium coupling injection device is arranged above the trolley.

First, it is necessary to explain the gas (steam) injection process in the prior art

Fig. 3 and 4 are structural views of a sintering machine with gas injection. Compared with a conventional sintering machine, the gas injection reinforced sintering technology is characterized in that a gas injection device is additionally arranged on the upper portion of a sintering machine trolley behind an ignition furnace and consists of a gas injection main pipe, gas injection branch pipes, a gas injection pipe row and a gas injection cover body, wherein the gas injection pipe row in the gas injection cover body is arranged in parallel with a charge level of the sintering machine and is connected with the gas injection main pipe through the gas injection branch pipes, a charge level CO detector is arranged near the charge level to monitor a CO concentration value of a charge level area in real time, and a branch pipe flow regulating valve is arranged on each gas injection branch pipe to regulate the injected gas amount in real time. During sintering and batching, the coal blending ratio of the material bed is properly reduced, and a part of heat required by sintering is fed into the material bed in a gas injection mode. In the sintering process, the gas diluted to be below the explosion limit is sprayed to the surface space of the sintering material layer through a gas injection pipe, so that the gas is pumped into the material layer, and the sintering material layer is subjected to heat supplementing by using the gas, so that the sintering process is strengthened. And the steam injection and the gas injection are similar, and the structure of the device is basically the same.

Fig. 2 is a structural view of a sintering machine with gas & steam coupled blowing. Gas and steam get into the cover in the left and right sides of jetting cover respectively through respective pipe-line system, and the mounted position of steam injection bank of tubes will be a little higher than the gas injection bank of tubes, this is because steam pressure is higher, the ejection velocity of flow is very fast, if with the steam pipe setting in gas pipe below, the high-pressure steam easily appears and forms the condition that the curtain hinders the gas and descend at the charge level, and the steam bank of tubes if set up in gas bank of tubes top, can play the drainage effect, adsorb the entrainment with the gas and take into the bed of material.

Secondly, there are following technical problems in the prior art:

1) the mixing rate of the fuel gas and the steam is low

When gas and steam are blown in the cover, due to different paths, separate medium flow beams are formed respectively without a scattering device, so that the mixing speed of the two media is very slow, meanwhile, the mixing speed of the two media and air is also very slow, and sometimes, the situation that pure gas or pure steam is sucked in a local area even occurs;

2) uneven concentration of gas and steam sprayed on the surface of the material

Because the gas and steam mixing rate is slow, and the distance of jetting device apart from the charge level is very limited again, so very easily appear the gas and the concentration inequality that steam sprayed at the charge level, the gas volume concentration that each region of sintering charge level inhaled, steam volume concentration is different promptly to lead to supplementary sintering effect not good, even disturb the condition emergence of sintering normal production.

In summary, the key problem to be solved in structural optimization of the existing gas and steam coupled injection device is that a new device structure technology capable of rapidly mixing gas and steam uniformly and sucking the gas and steam into each region of a material layer is urgently needed.

In the first embodiment of this application, the spray tube outside including the dustcoat spray tube cover is established, all lead to gas or steam in interior spray tube and the dustcoat spray tube, the material that lets in interior spray tube and the dustcoat spray tube is different, when the material in the inner coil passes through the orifice blowout, can with the dustcoat spray tube in to spout spun material mix, under the effect of spout, the blowout direction of the material of dustcoat spray tube and the blowout direction of interior spray tube material are direct alternately to make gas and steam intensive mixing. The technical scheme that this application provided can make spun steam or gas mix and fill the sintering charge level of sintering machine platform truck, promotes the water gas reaction of sintering machine charge level, improves the sintering quality of sintering machine.

In a first embodiment of the present application, a plurality of mixed directional injection tubes are arranged in parallel with each other to form a group of mixed directional injection tube rows, thereby increasing the area of injection combustion.

It should be noted that, in an embodiment of the present application, the hybrid directional injection tubes may not constitute a hybrid directional injection tube row, and a large-area injection sintering process may be implemented by controlling a single hybrid directional injection tube through a moving mechanism.

In the first embodiment of the application, the inner spray pipe and the outer cover spray pipe are respectively filled with gas or steam through the matching of the steam branch pipe, the steam main pipe, the gas branch pipe and the gas main pipe according to different filled substances.

In the present application, the flow of the steam branch and/or the gas branch is regulated by a branch regulating valve.

In the first embodiment of the application, the substances sprayed out of the inner spray pipe are pressurized by the inner spray booster pump, so that the spraying effect is increased.

In the first embodiment of the application, the substances sprayed out of the outer cover spray pipe are pressurized by the outer spray booster pump, so that the spraying effect is increased.

It should be noted that, in a preferred embodiment of the present application, the inner nozzle is fed with steam, and the outer nozzle is fed with fuel gas. The inner spray pipe sprays high-pressure steam, can play a drainage effect, and adsorbs and entrains the fuel gas to be carried into the material layer. So that the fuel gas and the steam are deeply inserted into the sintering charge surface to participate in the water gas reaction.

In the first embodiment of the application, the pressurizing nozzle can further increase the speed (especially steam) of the substances sprayed out from the inner spray pipe, so that the materials at the spray opening form turbulent flow, the materials are mixed more fully, and the mixing speed is improved.

It should be noted that the pressurizing nozzle may be a common air nozzle in daily life, and the substance is ejected at a high speed by combining the high-pressure state of the substance in the inner nozzle.

In the first embodiment of this application, through charge level CO detector, can real-time supervision sintering machine platform truck on, the CO concentration of sintering charge level layer, and then be favorable to controlling the jetting volume of steam and gas.

In the first embodiment of the present application, the nozzles have two specific examples, the first is that the number of nozzles corresponds to the number of injection holes, and one nozzle corresponds to one injection hole. The preferred shape of the spout is circular. The second is that one nozzle corresponds to a plurality of spray holes, namely, the substances sprayed from the plurality of spray holes pass through one nozzle and are mixed with the substances sprayed from the outer cover spray pipe of the nozzle.

In the first embodiment of the present application, the actual ejection area of the ejection opening can be adjusted by the air mixing area adjustment mechanism, thereby promoting more sufficient mixing of the substance in the outer shroud nozzle with the substance in the inner nozzle.

In a second embodiment of the present application, a dual medium coupled blowing sintering machine having the double pipe injection type dual medium coupled blowing device of the first embodiment is provided. The sintering machine can utilize steam and fuel gas to generate water gas reaction on the sintering material surface of the trolley, thereby promoting the combustion of the sintering material. The sintering quality of the sintering material is improved.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. according to the technical scheme, the steam and the fuel gas can be promoted to be rapidly mixed, and the mixing efficiency of double-medium coupling injection of the steam and the fuel gas is improved;

2. according to the technical scheme, steam and fuel gas can be promoted to be uniformly paved on the surface of the sintering machine, so that the sintering quality of a sintering locomotive is improved;

3. the technical scheme that this application provided can reduce the use amount of coal when sintering material system ball, reduces energy resource consumption, reduction in production cost.

Drawings

Fig. 1 is a schematic view of the overall structure of a sleeve injection type double-medium coupling injection device in the embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a steam and gas coupled blowing device in the prior art;

FIG. 3 is a schematic diagram of the outline structure of a sintering machine in the prior art;

FIG. 4 is a schematic view of a prior art gas injection arrangement;

FIG. 5 is a schematic structural view of a hybrid directional injection tube according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a hybrid directional injection tube with a booster nozzle in an embodiment of the present invention;

fig. 7 is a schematic structural view of a mixing directional blowing pipe having a wind mixing area adjustment mechanism according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a mixing directional injection tube having a booster nozzle and a mixed air area adjusting mechanism according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a nozzle corresponding to a nozzle hole in an embodiment of the present invention;

fig. 10 is a schematic structural view of a nozzle corresponding to a plurality of nozzles according to an embodiment of the present invention.

Reference numerals:

p1: mixing the directional blowing tube rows; 1: a hybrid directional injection pipe; 101: an inner nozzle; 102: a housing nozzle; 103: spraying a hole; 104: a spout; 105: a pressurizing nozzle; 106: a mixed air area adjusting mechanism; 2: an internal-spraying booster pump; 3: an external-spraying booster pump; 4: a charge level CO detector; 5: a branch pipe regulating valve; z1: a steam branch pipe; z2: a steam main pipe; r1: a gas branch pipe; r2: a gas main pipe; a1: a trolley; a2: a cover body.

Detailed Description

According to a first embodiment of the utility model, provide a sleeve pipe injection formula bimedium coupling jetting device:

a double-pipe-jet dual-media-coupled blowing device, the blowing device comprising: a mixing and directional blowing pipe 1; the mixing and directional blowing pipe 1 comprises an inner nozzle 101 and an outer cover nozzle 102; the outer cover spray pipe 102 covers the outer side of the inner spray pipe 101; the inner spray pipe 101 and the outer cover spray pipe 102 are horizontally arranged above a trolley of the sintering machine; a spray hole 103 is formed in one side, facing the trolley, of the inner spray pipe 101; a nozzle 104 is arranged on one side of the outer cover spray pipe 102 towards the trolley; the substances sprayed out from the spray holes 103 pass through the nozzles 104 and enter the sintering material layer; steam or fuel gas is introduced into the inner spray pipe 101; the outer cover spray pipe 102 is internally filled with gas or steam.

Preferably, the number A of the mixing and directional blowing pipes 1 is 2-100; the a mixing and directional blowing pipes 1 form a group of mixing and directional blowing pipe rows P1.

Preferably, the blowing device further includes: a steam branch pipe Z1, a steam main pipe Z2, a fuel gas branch pipe R1 and a fuel gas main pipe R2; the steam main pipe Z2 is arranged outside the sintering machine cover body; a branch steam pipe Z1 of a steam main pipe Z2 is communicated with the feed inlet of the inner spray pipe 101/the outer cover spray pipe 102; the fuel gas main pipe R2 is arranged outside the sintering machine cover body; the gas main pipe R2 branch gas branch pipe R1 is communicated with the feed inlet of the outer cover spray pipe 102/inner spray pipe 101.

This blowing device still includes: a branch pipe regulating valve 5; the branch regulating valve 5 is arranged on the steam branch pipe Z1 and/or the fuel gas branch pipe R1.

Preferably, the blowing device further includes: an internal-spraying booster pump 2; the inner spray booster pump 2 is arranged at the upstream of the feeding hole of the inner spray pipe 101.

Preferably, the blowing device further includes: an external-spraying booster pump 3; the outer-spraying booster pump 3 is arranged at the upstream of the feeding hole of the outer-cover spraying pipe 102.

Preferably, the mixing and directional blowing pipe 1 further comprises: a pressurizing nozzle 105, the pressurizing nozzle 105 being disposed at the nozzle hole 103.

Preferably, the blowing device further includes: a charge level CO detector 4; the charge level CO detector 4 is arranged on a sintering trolley, and a probe of the charge level CO detector 4 is positioned at a sintering material on the trolley.

Preferably, the nozzle 104 is circular, and the nozzle hole 103 is located right above the nozzle 104 in the vertical direction.

Preferably, the nozzle 104 is rectangular, and the nozzle holes are arranged right above the nozzle in the vertical direction.

Preferably, the mixing and directional blowing pipe 1 further comprises: a mixed air area adjusting mechanism 106; the mixed air area adjusting mechanism 106 is arranged at the nozzle 104; the mixed air area adjusting mechanism 106 is used for adjusting the air outlet area at the nozzle 104.

According to the utility model discloses a second embodiment provides a two medium coupling jetting sintering machines:

a dual media coupled blown sintering machine, the sintering machine comprising: the double-medium coupling injection device of the first embodiment, a trolley A1 and a cover body A2; the trolley A1 is arranged in the cover body A2, and the sleeve injection type double-medium coupling blowing device is arranged above the trolley A1.

Example 1

A double-pipe-jet dual-media-coupled blowing device, the blowing device comprising: a mixing and directional blowing pipe 1; the mixing and directional blowing pipe 1 comprises an inner nozzle 101 and an outer cover nozzle 102; the outer cover spray pipe 102 covers the outer side of the inner spray pipe 101; the inner spray pipe 101 and the outer cover spray pipe 102 are horizontally arranged above a trolley of the sintering machine; a spray hole 103 is formed in one side, facing the trolley, of the inner spray pipe 101; a nozzle 104 is arranged on one side of the outer cover spray pipe 102 towards the trolley; the substances sprayed out from the spray holes 103 pass through the nozzles 104 and enter the sintering material layer; steam or fuel gas is introduced into the inner spray pipe 101; the outer cover spray pipe 102 is internally filled with gas or steam.

Example 2

Example 1 was repeated except that the number a of mixing and directional blowing tubes 1 was 2-100; the a mixing and directional blowing pipes 1 form a group of mixing and directional blowing pipe rows P1.

Example 3

Example 2 was repeated except that the blowing device further included: a steam branch pipe Z1, a steam main pipe Z2, a fuel gas branch pipe R1 and a fuel gas main pipe R2; the steam main pipe Z2 is arranged outside the sintering machine cover body; a branch steam pipe Z1 of a steam main pipe Z2 is communicated with the feed inlet of the inner spray pipe 101/the outer cover spray pipe 102; the fuel gas main pipe R2 is arranged outside the sintering machine cover body; the gas main pipe R2 branch gas branch pipe R1 is communicated with the feed inlet of the outer cover spray pipe 102/inner spray pipe 101. This blowing device still includes: a branch pipe regulating valve 5; the branch regulating valve 5 is arranged on the steam branch pipe Z1 and/or the fuel gas branch pipe R1.

Example 4

Example 3 was repeated except that the blowing device further included: an internal-spraying booster pump 2; the inner spray booster pump 2 is arranged at the upstream of the feeding hole of the inner spray pipe 101.

Example 5

Example 4 was repeated except that the blowing device further included: an external-spraying booster pump 3; the outer-spraying booster pump 3 is arranged at the upstream of the feeding hole of the outer-cover spraying pipe 102.

Example 6

Example 5 was repeated, except that the mixing and directional injection pipe 1 further comprises: a pressurizing nozzle 105, the pressurizing nozzle 105 being disposed at the nozzle hole 103. This blowing device still includes: a charge level CO detector 4; the charge level CO detector 4 is arranged on a sintering trolley, and a probe of the charge level CO detector 4 is positioned at a sintering material on the trolley.

Example 7

Example 6 was repeated except that the spouting port 104 was circular and the injection hole 103 was located right above the spouting port 104 in the vertical direction.

Example 8

Example 6 is repeated except that the nozzle 104 is rectangular, and the nozzle holes 103 are formed vertically above the nozzle 104.

Example 9

Example 7 was repeated, except that the mixing and directional injection pipe 1 further comprises: a mixed air area adjusting mechanism 106; the mixed air area adjusting mechanism 106 is arranged at the nozzle 104; the mixed air area adjusting mechanism 106 is used for adjusting the air outlet area at the nozzle 104.

Example 10

A dual media coupled blown sintering machine, the sintering machine comprising: the double-medium coupling injection device of the first embodiment, a trolley A1 and a cover body A2; the trolley A1 is arranged in the cover body A2, and the sleeve injection type double-medium coupling blowing device is arranged above the trolley A1.

Claims (10)

1. A double-medium coupling injection device of a sleeve injection type is characterized in that the injection device comprises: a hybrid directional blowing pipe (1); the mixing and directional blowing pipe (1) comprises an inner nozzle (101) and an outer cover nozzle (102); the outer cover spray pipe (102) is covered outside the inner spray pipe (101); the inner spray pipe (101) and the outer cover spray pipe (102) are horizontally arranged above a trolley of the sintering machine; a spray hole (103) is formed in one side, facing the trolley, of the inner spray pipe (101); a nozzle (104) is arranged on one side, facing the trolley, of the outer cover spray pipe (102); the substances sprayed out from the spray holes (103) pass through the nozzles (104) and enter the sintered material layer; steam or fuel gas is introduced into the inner spray pipe (101); and gas or steam is introduced into the outer cover spray pipe (102).

2. The double-pipe-jet double-medium-coupled blowing device as claimed in claim 1, wherein the number A of the mixing directional blowing pipes (1) is 2-100; a mixing and directional blowing pipes (1) form a group of mixing and directional blowing pipe rows (P1).

3. The sleeve-injecting dual-media-coupled blowing device of claim 2, further comprising: a steam branch pipe (Z1), a steam main pipe (Z2), a fuel gas branch pipe (R1) and a fuel gas main pipe (R2); the steam main pipe (Z2) is arranged outside the sintering machine cover body; a branch steam pipe (Z1) of a steam main pipe (Z2) is communicated with a feed inlet of the inner spray pipe (101)/the outer cover spray pipe (102); the fuel gas main pipe (R2) is arranged outside the sintering machine cover body; a branch gas pipe (R1) of a gas main pipe (R2) is communicated with a feed inlet of the outer cover spray pipe (102)/the inner spray pipe (101); and

this blowing device still includes: a branch pipe regulating valve (5); the branch regulating valve (5) is arranged on the steam branch pipe (Z1) and/or the fuel gas branch pipe (R1).

4. The sleeve-injecting dual-media-coupled blowing device of claim 3, further comprising: an internal-spraying booster pump (2); the inner spraying booster pump (2) is arranged at the upstream of the feeding hole of the inner spraying pipe (101).

5. The sleeve-injecting dual-media-coupled blowing device of claim 3, further comprising: an external-spraying booster pump (3); the outer spraying booster pump (3) is arranged at the upstream of the feeding hole of the outer spraying pipe (102).

6. The double-pipe-jet double-medium-coupled blowing device according to any one of claims 1 to 5, wherein the hybrid directional blowing pipe (1) further comprises: a pressurizing nozzle (105), the pressurizing nozzle (105) being provided at the nozzle hole (103); and/or

This blowing device still includes: a charge level CO detector (4); the charge level CO detector (4) is arranged on a sintering trolley, and a probe of the charge level CO detector (4) is positioned at a sintering material on the trolley.

7. The sleeve-injecting dual-media-coupled blowing device according to claim 6, wherein the nozzle opening (104) is circular, and the injection hole (103) is located vertically above the nozzle opening (104).

8. The sleeve-injecting double-medium-coupled blowing device according to claim 6, wherein the nozzle opening (104) is rectangular, and the nozzle holes (103) are provided vertically above the nozzle opening (104).

9. The double-pipe-jet double-medium-coupled blowing device as recited in claim 7 or 8, wherein the hybrid directional blowing pipe (1) further comprises: a mixed air area adjusting mechanism (106); the air mixing area adjusting mechanism (106) is arranged at the nozzle (104); the mixed air area adjusting mechanism (106) is used for adjusting the air outlet area at the nozzle (104).

10. A double-medium coupling blowing sintering machine is characterized by comprising: the sleeve-injecting dual-media-coupled blowing device of any one of claims 1-9, a trolley (a1), a hood (a 2); the trolley (A1) is arranged in the cover body (A2), and the sleeve injection type double-medium coupling blowing device is arranged above the trolley (A1).

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