Coal powder injection tank for blast furnace

Abstract

The utility model relates to a blast furnace coal powder injection jar belongs to coal powder injection technical field, solve the technical problem that the gas direction is inconvenient to adjust when the coal powder injection at present, the blast furnace coal powder injection jar includes jar body, injection pipe, injection head and adjusting part, jar body is used for carrying out injection to coal powder, one end of injection pipe is linked with gas source, and the other end of injection pipe is linked with jar body, and the gas is passed into jar body, injection head is installed in the one end of injection pipe close to jar body, and injection head is located in jar body, adjusting part is rotatably installed in injection head, and adjusting part has the passage for the gas through between injection head, adjusting part rotates to adjust the passage position, and then to adjust the air direction through injection head. Therefore, the blast furnace coal powder injection jar changes the air direction of injection head to jar body, thereby realizing the coverage of the air direction to the larger range in jar body, to better satisfy the injection of coal powder in different positions.

Description

Technical Field

[0001] This utility model belongs to the field of pulverized coal injection technology, and specifically relates to a pulverized coal injection tank for blast furnaces. Background Technology

[0002] In coal processing and blast furnace ironmaking processes, pulverized coal injection technology is widely used as a highly efficient and energy-saving fuel supply method. By grinding coal into pulverized coal and injecting it into the blast furnace or other combustion equipment through injection equipment, precise control and efficient utilization of fuel can be achieved.

[0003] In traditional pulverized coal injection devices, the injection head is usually directed into the injection tank at a fixed angle and direction. Since the wind direction is not easy to adjust, the injection range is limited. The fixed wind direction injection method causes the pulverized coal to be mainly concentrated in the area directly in front of the injection head, while the edge of the tank and the area away from the injection head may not be adequately covered by pulverized coal. Utility Model Content

[0004] This utility model provides a pulverized coal injection tank for blast furnaces, which solves the technical problem that the direction of the ejected gas is not easy to adjust when injecting pulverized coal.

[0005] This utility model is achieved through the following technical solution: a pulverized coal injection tank for blast furnaces, comprising a tank body, an injection pipe, an injection head, and an adjusting component, wherein the tank body is used for injecting pulverized coal; one end of the injection pipe is connected to a gas source, and the other end of the injection pipe is connected to the tank body to introduce gas into the tank body; the injection head is installed at the end of the injection pipe near the tank body, and the injection head is located inside the tank body; the adjusting component is rotatably installed inside the injection head, and there is a channel for gas passage between the adjusting component and the injection head; the adjusting component rotates to adjust the position of the channel, thereby adjusting the airflow direction through the injection head.

[0006] Optionally, the adjusting member includes a driving member and an adjusting block, wherein one end of the driving member is mounted on the nozzle; the adjusting block is mounted on the other end of the driving member, the driving member is used to drive the adjusting block to rotate, the adjusting block has a guide surface, the guide surface and the inner wall of the nozzle form the channel, and the width of the channel gradually decreases from one end of the adjusting block near the nozzle to the other end.

[0007] Optionally, the adjusting block includes an adjusting part and a blocking part, wherein the guide surface is disposed in the adjusting part; the blocking part is located at one end of the adjusting part away from the blowing pipe, the blocking part is adapted to the blowing head, and the blocking part moves into the blowing head to block the blowing head from introducing gas into the tank.

[0008] Optionally, it also includes a drive rod, one end of which is connected to the drive member, and the adjusting block is mounted on the other end of the drive rod. The drive rod rotates to drive the drive member to move axially along the nozzle.

[0009] Optionally, a plurality of spray nozzles are provided, and the plurality of spray nozzles are evenly distributed on the inner wall of the tank, and each spray nozzle is connected to an air source through a spray pipe.

[0010] Optionally, it also includes a fixing member, which is installed on the tank body and connected to the spray pipe to fix the spray pipe to the tank body.

[0011] Optionally, it also includes a return gas pipe connected to the tank body, the return gas pipe being used to recover the gas delivered into the tank body.

[0012] Optionally, it also includes a valve body, which is installed between the blow pipe and the return pipe to control the on / off of gas delivery.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This utility model provides a pulverized coal injection tank for blast furnaces, comprising a tank body, an injection pipe, an injection head, and an adjusting component. The tank body is used for injecting pulverized coal. One end of the injection pipe is connected to a gas source, and the other end of the injection pipe is connected to the tank body to introduce gas into the tank body. The injection head is installed at the end of the injection pipe near the tank body and is located inside the tank body. The adjusting component is rotatably installed inside the injection head, and there is a channel for gas to pass through between the adjusting component and the injection head. The adjusting component rotates to adjust the position of the channel, thereby adjusting the airflow direction through the injection head.

[0015] With the above structure, the pulverized coal injection tank for blast furnaces provided by this utility model, when injecting pulverized coal, allows the gas source to supply gas through the injection pipe after the pulverized coal enters the tank. The gas is then ejected from the injection head along the injection pipe, and the injection head sprays gas into the tank, thereby injecting the pulverized coal inside the tank. By driving the adjusting component to rotate, the position of the channel inside the injection head is changed, thus realizing the position of the gas ejected from the injection head and changing the airflow direction of the injection head. Adjusting the airflow direction of the injection head according to usage requirements allows for injection over a larger area inside the tank. Therefore, this pulverized coal injection tank for blast furnaces, by changing the airflow direction of the injection head into the tank, achieves wider coverage of the airflow inside the tank, better meeting the needs of injecting pulverized coal at different locations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a pulverized coal injection tank for blast furnace provided by this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the blower head in an embodiment of this utility model;

[0019] Figure 3 This is a cross-sectional view of the nozzle in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the blow nozzle and the blow pipe in an embodiment of this utility model.

[0021] In the picture:

[0022] 1-Tank body; 2-Purge pipe; 3-Purge head; 4-Adjusting component; 41-Drive component; 42-Adjusting block; 421-Adjusting part; 4211-Guide surface; 422-Blocking part; 5-Drive rod; 6-Fixing component; 7-Return air pipe; 8-Valve body. Detailed Implementation

[0023] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0027] This utility model provides a pulverized coal injection tank for blast furnaces, solving the technical problem described herein. The pulverized coal injection tank for blast furnaces includes a tank body, an injection pipe, an injection head, and adjusting components, wherein:

[0028] The tank is used to inject pulverized coal. The tank can be made of high-strength, corrosion-resistant materials to ensure good sealing and stability during long-term use.

[0029] One end of the injection pipe is connected to the gas source to ensure sufficient gas pressure to supply the injection process into the pipe, and the other end is connected to the tank to introduce gas into the tank to provide power for the injection of pulverized coal.

[0030] The injection head is installed at one end of the injection pipe near the tank body. The injection head is located inside the tank body so as to directly face the pulverized coal inside the tank body.

[0031] The adjusting component is rotatably installed inside the nozzle. There is a channel for gas to pass through between the adjusting component and the nozzle. The size of the channel is determined according to the specific application requirements. By driving the adjusting component to rotate around its axis, the position of the channel between the adjusting component and the nozzle changes, thereby changing the gas flow path and direction, and thus changing the spraying direction of the nozzle, thereby achieving the adjustment of the nozzle direction.

[0032] With the above structure, the pulverized coal injection tank for blast furnaces provided by this utility model, when injecting pulverized coal, allows the gas source to supply gas through the injection pipe after the pulverized coal enters the tank. The gas is then ejected from the injection head along the injection pipe, and the injection head sprays gas into the tank, thereby injecting the pulverized coal inside the tank. By driving the adjusting component to rotate, the position of the channel inside the injection head is changed, thus realizing the position of the gas ejected from the injection head and changing the airflow direction of the injection head. Adjusting the airflow direction of the injection head according to usage requirements allows for injection over a larger area inside the tank. Therefore, this pulverized coal injection tank for blast furnaces, by changing the airflow direction of the injection head into the tank, achieves wider coverage of the airflow inside the tank, better meeting the needs of injecting pulverized coal at different locations.

[0033] An optional implementation of this embodiment is as follows: The adjusting component includes a driving component and an adjusting block. One end of the driving component is mounted on the nozzle and can rotate stably around its axis. The other end of the driving component is connected to the adjusting block, serving as a transmission component to drive the adjusting block to rotate. The adjusting block is mounted on the other end of the driving component, and the driving component drives the adjusting block to rotate. The adjusting block has a guide surface, and a channel is formed between the guide surface and the inner wall of the nozzle. The width of the channel gradually decreases from one end of the adjusting block near the nozzle to the other end. As the gas passes through the channel, the pressure gradually increases, simultaneously causing the gas to move towards the nozzle. Lateral movement controls the gas flow direction, directing the gas towards the coal powder inside the tank for pulverization. When the airflow direction needs adjustment, the drive component rotates, which in turn drives the adjusting block to rotate, changing the relative position between the guide surface and the inner wall of the nozzle. This changes the position of the channel, altering the gas flow path and direction. Simultaneously, the rotation of the adjusting component reduces coal powder or other particles adhering to the inner wall of the nozzle, minimizing the impact of nozzle blockage on pulverization after prolonged use. The drive component can be a drive motor or other components capable of driving the adjusting block to rotate.

[0034] An optional implementation of this embodiment is as follows: The adjusting block includes an adjusting part and a blocking part. The adjusting part has a guide surface disposed thereon. When the adjusting part rotates, the relative position between the guide surface and the inner wall of the nozzle changes, thereby altering the width and shape of the channel and achieving precise control of the gas flow direction and velocity. The blocking part is located at the end of the adjusting part furthest from the nozzle. The blocking part is adapted to the nozzle and ensures that it can be tightly embedded within the nozzle. When the blocking part moves into the nozzle, it effectively blocks the nozzle from introducing gas into the tank, thus achieving a gas blocking function.

[0035] An optional implementation of this embodiment is as follows: It further includes a drive rod, one end of which is connected to a drive component. An adjusting block is rotatably mounted on the other end of the drive rod. The drive rod drives the drive component to move axially along the nozzle. The rotation of the drive component causes the drive rod to rotate, thereby rotating the adjusting block. Simultaneously, the axial movement of the drive component also causes the adjusting block to move accordingly. When it is necessary to adjust the airflow direction, the drive component drives the drive rod to rotate, thereby adjusting the rotation of the adjusting block. The rotation of the adjusting block changes the width and shape of the channel, thereby controlling the gas flow direction. When it is necessary to block the gas flow, the drive rod drives the adjusting block to move, thus blocking the flow. The sealing part gradually moves into the nozzle. As the sealing part moves, it completely enters the nozzle and abuts against the inner wall of the nozzle, thus preventing gas from entering the tank. By introducing a driving component and a driving rod, the airflow direction of the nozzle is adjusted and the gas is blocked, thus controlling the gas flow direction and providing a gas blocking function. According to actual needs, the position and attitude of the adjusting block can be controlled by adjusting the rotation angle and length of the driving component and the driving rod, thereby achieving the adjustment of the gas flow direction and effective blocking of the gas. The driving rod can be a telescopic rod or other components that can drive the adjusting block to move along the axial direction of the nozzle.

[0036] An optional implementation of this embodiment is as follows: There are multiple injection heads, which are evenly distributed on the inner wall of the tank. Each injection head is connected to the gas source through an injection pipe, so as to distribute the gas from the gas source more evenly to each injection head, thereby reducing the uneven gas dispersion that leads to excessive differences in the pulverized coal injection effect in the tank.

[0037] An optional implementation of this embodiment is as follows: In order to reduce the shaking of the injection pipe, the pulverized coal injection tank for blast furnace also includes a fixing component. The fixing component is installed on the tank body and connected to the injection pipe, thereby fixing the injection pipe to the tank body. The fixing component reduces the shaking of the injection pipe when conveying gas, thereby making the gas conveyed in the injection pipe more stable, and thus reducing the impact on the pulverized coal injection effect caused by pipe shaking. The fixing component can be a support, bracket, clamp, or other component that can fix the pipe to the tank body.

[0038] An optional implementation of this embodiment is as follows: It also includes a return gas pipe, which is connected to the tank body. The return gas pipe is used to recover the gas delivered into the tank body during the injection. The recovered gas can be processed and delivered back into the tank body to inject pulverized coal. Gas recovery can reduce the cost of gas use, reduce energy consumption, and reduce direct gas venting. At the same time, the return gas pipe can maintain the pressure inside the tank body and reduce pressure fluctuations inside the tank body.

[0039] An optional implementation of this embodiment is as follows: In order to facilitate the control of gas transportation, the blast furnace pulverized coal injection pipe also includes a valve body. The valve body is installed on the injection pipe and the return gas pipe. Each injection pipe and the return gas pipe is equipped with a valve body. The valve body is used to control the gas flow of the injection pipe and the return gas pipe, so as to open the corresponding injection pipe and the return gas pipe according to the specific usage.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A pulverized coal injection tank for a blast furnace, characterized in that, include: The tank is used for injecting pulverized coal. The blowpipe has one end connected to a gas source and the other end connected to the tank body to introduce gas into the tank body. A blow nozzle is installed at one end of the blow pipe near the tank body, and the blow nozzle is located inside the tank body; An adjusting member is rotatably mounted inside the nozzle. There is a channel for gas to pass through between the adjusting member and the nozzle. The adjusting member rotates to adjust the position of the channel, thereby adjusting the airflow direction through the nozzle.

2. The pulverized coal injection tank for a blast furnace according to claim 1, characterized in that, The adjusting element includes: The driving component is mounted at one end to the blow head; An adjusting block is installed at the other end of the driving member. The driving member is used to drive the adjusting block to rotate. The adjusting block has a guide surface, and the guide surface forms a channel with the inner wall of the blow nozzle. The width of the channel gradually decreases from one end of the adjusting block near the blow pipe to the other end.

3. A pulverized coal injection tank for a blast furnace according to claim 2, characterized in that, The adjustment block includes: Adjustment section, wherein the guide surface is disposed in the adjustment section; A sealing part is located at the end of the adjusting part away from the blowing pipe. The sealing part is adapted to the blowing head. The sealing part moves into the blowing head to block the blowing head from introducing gas into the tank.

4. A pulverized coal injection tank for a blast furnace according to claim 2, characterized in that, Also includes: A drive rod is connected at one end to the drive component, and an adjusting block is installed at the other end of the drive rod. The drive rod rotates to drive the drive component to move axially along the nozzle.

5. A pulverized coal injection tank for a blast furnace according to claim 1, characterized in that, The spray nozzles are provided in multiple ways, and the multiple spray nozzles are evenly distributed on the inner wall of the tank. Each spray nozzle is connected to the air source through the spray pipe.

6. A pulverized coal injection tank for a blast furnace according to claim 1, characterized in that, Also includes: A fastener is installed on the tank body and connected to the spray pipe to fix the spray pipe to the tank body.

7. A pulverized coal injection tank for a blast furnace according to claim 1, characterized in that, Also includes: A return gas pipe is connected to the tank body and is used to recover the gas delivered into the tank body.

8. A pulverized coal injection tank for a blast furnace according to claim 7, characterized in that, Also includes: A valve body is installed on the blow pipe and the return pipe to control the on / off of gas delivery.

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