Gasification furnace with adjustable air intake

Abstract

The utility model discloses a kind of gasification furnace with adjustable air inlet device, belong to gasification furnace technical field, aim at overcoming the defect of the air inlet adjustment inconvenience of existing gasification furnace. Gasification furnace includes furnace body and air inlet device, furnace body has mounting port, air inlet device is installed at mounting port, air inlet device includes air inlet seat, adjustable head movably installed in air inlet seat, power mechanism driving adjustable head activity, adjustable head activity to adjust the size of air inlet passage opening degree, the outer side wall of furnace body is fixed with air inlet cover, air inlet cover has air inlet, air inlet cover is communicated with air inlet passage. Adjustable air inlet device provides required air for gasification reaction in gasification furnace furnace body. Through the control of fuel size, and the adjustment of air inlet size, the control of air volume, the output of finished product gas can be adjusted. To meet different customers, or the change of finished product gas demand of customer in different time period, achieve flexible and reliable, adjust conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of gasification furnace technology and relates to a gasification furnace with an adjustable air inlet device. Background Technology

[0002] In the operation of existing gasifiers, production output and workload constantly change with user demands, requiring continuous adjustments to gasification quality and gas production. The fixed-size air inlet of existing gasifiers, due to the inability to adjust air volume and flow rate during production, negatively impacts the gasification quality and gas production of the finished fuel. Summary of the Invention

[0003] This utility model addresses the problems existing in the prior art by proposing a gasifier with an adjustable air inlet device, aiming to overcome the shortcomings of the inconvenient air inlet adjustment of existing gasifiers.

[0004] This utility model is implemented as follows:

[0005] A gasifier with an adjustable air inlet device is characterized in that it includes a furnace body and an air inlet device. The furnace body has an installation port, and the air inlet device is installed at the installation port. The air inlet device includes an air inlet seat fixed to the furnace body and having an air inlet channel, an adjustment head movably installed in the air inlet seat, and a power mechanism for driving the adjustment head to move. The adjustment head moves to adjust the opening of the air inlet channel. An air inlet hood is fixed to the outer wall of the furnace body. The air inlet hood has an air inlet and communicates with the air inlet channel.

[0006] Outside air enters through the air inlet of the air inlet hood, driven by a fan, and then flows into the furnace body through the air inlet channel. A power mechanism drives an adjusting head to move within the air inlet seat, thereby changing the opening of the air inlet channel. With a constant fan power, increasing the opening of the air inlet channel increases the amount of air entering the furnace body; decreasing the opening decreases the amount of air entering the furnace body, thus achieving flexible control of the air intake.

[0007] Preferably, a fixing ring plate is fixed to the edge of the mounting port, and the fixing ring plate abuts against the outer wall of the air inlet seat. The fixing ring plate and the air inlet seat form a large contact surface, making the air inlet seat more stably fixed.

[0008] Preferably, the outer end of the air inlet seat has an outwardly protruding limiting portion, and one end of the fixing ring plate abuts against the limiting portion. The cooperation between the limiting portion and the fixing ring plate prevents the air inlet seat from completely entering the furnace body.

[0009] Preferably, an L-shaped baffle is bolted to the furnace body, with one end of the baffle abutting against the outer wall of the furnace body and the other end pressing against the outer end of the air inlet seat. The baffle and the fixing ring plate position the air inlet seat, forming a clamping and fixing state for the air inlet seat.

[0010] Preferably, a guide seat is fixed on the inner wall of the outer end of the air inlet seat, and multiple guide seats are distributed at intervals. The guide seats ensure that the air inlet channel is not blocked and can constrain the adjusting head to prevent it from shaking when moving, thereby improving the stability of the adjusting head's movement.

[0011] Preferably, the air inlet seat has a plurality of circumferentially spaced adjusting screws in its center, the adjusting screws penetrating the side wall of the air inlet seat and contacting the adjusting head. The adjusting screws can further limit the adjusting head in the center of the air inlet seat, making the movement of the adjusting head more stable.

[0012] Preferably, the outer radial direction of the inner end of the adjusting head gradually decreases towards the inner end, and the inner side of the inner end of the air inlet seat is adapted to the inner end of the adjusting head. Thus, when the adjusting head moves, the effective ventilation cross-sectional area of ​​the air inlet channel formed by the two changes. When the adjusting head moves outward, the effective ventilation cross-sectional area of ​​the air inlet channel increases accordingly, thereby increasing the airflow; when the adjusting head moves inward, the effective ventilation cross-sectional area of ​​the air inlet channel decreases, and the airflow decreases accordingly. This variable cross-section design enables continuous adjustment of the airflow to meet the needs of different operating conditions. Of course, it can also be used in conjunction with an external fan to control the airflow and air velocity.

[0013] Preferably, the power mechanism is fixed to a fixed frame, and the end of the fixed frame near the furnace body has a fixed flange that is fixedly connected to the air inlet hood. The fixed frame serves to support and fix the power mechanism, ensuring its stability during operation and preventing displacement or damage to the power mechanism due to vibration or other factors. The fixed flange at the end of the fixed frame near the furnace body is fixedly connected to the air inlet hood. This connection method firmly integrates the fixed frame and the air inlet hood, thereby forming a relatively stable overall structure between the power mechanism and the entire air intake system.

[0014] Preferably, the power mechanism includes a cylinder and a drive shaft. A connecting rod is fixed to the adjusting head, and the connecting rod is detachably fixed to the drive shaft. The connecting rod passes through the fixed flange and the air inlet shroud, and the fixed flange is provided with a sealing structure. The drive shaft is detachably fixed to the connecting rod fixed to the adjusting head, transmitting the power generated by the cylinder to the adjusting head. When the drive shaft moves back and forth under the action of the cylinder, the connecting rod moves accordingly, thereby driving the adjusting head to move within the air inlet seat, thus changing the opening of the air inlet channel and adjusting the air intake volume.

[0015] Preferably, the sealing structure includes a fixed seat welded to the flange, a sealing packing between the fixed seat and the connecting rod, and a detachable sealing pressure member fixed to the fixed seat against the sealing packing. The sealing packing is a material with good sealing performance, typically made of soft and elastic fibers or similar materials. When the sealing packing is positioned between the fixed seat and the connecting rod, it deforms under pressure when the sealing pressure member presses against it. This deformation allows the sealing packing to tightly fill the gap between the fixed seat and the connecting rod, preventing air leakage and achieving a seal. The sealing pressure member is detachably fixed to the fixed seat, facilitating the installation, replacement, and maintenance of the sealing packing.

[0016] The present invention offers the following advantages: the adjustable air inlet device provides the necessary air for the gasification reaction within the gasifier. By controlling the fuel quantity and adjusting the air inlet quantity, the output of the finished gas can be adjusted. This allows for flexibility, reliability, and convenient adjustment to meet the varying demands of different customers or customers at different times, maximizing customer satisfaction. Attached Figure Description

[0017] Figure 1 This is a partial structural diagram of the gasifier.

[0018] Figure labeling: 100, Furnace body; 110, Fixed ring plate; 200, Air inlet seat; 210, Air inlet channel; 220, Limiting part; 230, Guide seat; 240, Adjusting screw; 300, Adjusting head; 310, Connecting rod; 400, Power mechanism; 500, Air inlet hood; 510, Air inlet; 600, Fixing frame; 610, Fixing flange; 620, Fixing seat; 630, Sealing packing; 640, Sealing pressure piece. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so as to make the technical solution of this utility model easier to understand and master. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] This embodiment provides a gasification furnace, such as Figure 1As shown, the furnace includes a furnace body 100 and an air inlet device. The furnace body 100 has an installation port, and the air inlet device is installed at the installation port. The air inlet device includes an air inlet seat 200 fixed on the furnace body 100 and having an air inlet channel 210, an adjusting head 300 movably installed in the air inlet seat 200, and a power mechanism 400 for driving the adjusting head 300. The adjusting head 300 is movable to adjust the opening of the air inlet channel 210. An air inlet hood 500 is fixed on the outer wall of the furnace body 100. The air inlet hood 500 has an air inlet 510 and is connected to the air inlet channel 210.

[0021] Outside air enters through the air inlet 510 of the air inlet hood 500, driven by a fan, and then flows into the furnace body 100 through the air inlet channel 210. The power mechanism 400 drives the adjusting head 300 to move within the air inlet seat 200, thereby changing the opening of the air inlet channel 210. With a constant fan power, increasing the opening of the air inlet channel 210 increases the amount of air entering the furnace body 100; decreasing the opening decreases the amount of air entering the furnace body 100, achieving flexible control of the air intake. Alternatively, in conjunction with the fan, the amount of air entering the furnace body 100 can be kept constant while adjusting the opening of the air inlet channel 210, resulting in a higher air velocity and deeper penetration into the furnace body 100. This facilitates better mixing with the pulverized coal within the furnace body 100, leading to more uniform combustion of the pulverized coal, improving the quality of the finished fuel gasification, reducing incompletely gasified fuel residue, and increasing energy utilization.

[0022] A fixing ring plate 110 is fixed to the edge of the mounting port. The fixing ring plate 110 is welded to the furnace body 100, and the fixing ring plate 110 abuts against the outer wall of the air inlet seat 200. The fixing ring plate 110 and the air inlet seat 200 form a large contact surface, making the fixing of the air inlet seat 200 more stable. In other optional embodiments, the air inlet seat 200 can also be directly welded to the furnace body 100.

[0023] The outer end of the air inlet seat 200 has an outwardly protruding limiting part 220, and one end of the fixing ring plate 110 abuts against the limiting part 220. The cooperation between the limiting part 220 and the fixing ring plate 110 prevents the air inlet seat 200 from completely entering the furnace body 100. An L-shaped baffle is fixed to the furnace body 100 by bolts. One end of the baffle abuts against the outer wall of the furnace body 100, and the other end presses against the outer end of the air inlet seat 200. The baffle and the fixing ring plate 110 position the air inlet seat 200, forming a clamping and fixing state for the air inlet seat 200.

[0024] A guide seat 230 is fixed to the inner wall of the outer end of the air inlet seat 200, and multiple guide seats 230 are spaced apart. The guide seats 230 ensure that the air inlet channel 210 is not blocked and can constrain the adjusting head 300 to prevent it from shaking when moving, thereby improving the stability of the adjusting head 300's movement. In other optional embodiments, the guide seat 230 can also be fixed to the adjusting head 300, and the guide seat 230 can move relative to the air inlet seat 200.

[0025] The air inlet base 200 has multiple circumferentially spaced adjusting screws 240 in its center. These adjusting screws 240 penetrate the side wall of the air inlet base 200 and contact the adjusting head 300. The adjusting screws 240 further limit the movement of the adjusting head 300 in the center of the air inlet base 200, making its movement more stable. The adjusting screws 240 can be adjusted for tightness or worn down to maintain the limiting effect, making the limiting of the adjusting head 300 more flexible. The fact that the adjusting screws 240 penetrate the side wall of the air inlet base 200 facilitates installation.

[0026] like Figure 1 As shown, the outer radial direction of the inner end of the adjusting head 300 gradually decreases towards the inner end, and the inner side of the inner end of the air inlet seat 200 is adapted to the inner end of the adjusting head 300. Thus, when the adjusting head 300 moves, the effective ventilation cross-sectional area of ​​the air inlet channel 210 formed by the two changes. When the adjusting head 300 moves outward, the effective ventilation cross-sectional area of ​​the air inlet channel 210 increases accordingly, thereby increasing the airflow; when the adjusting head 300 moves inward, the effective ventilation cross-sectional area of ​​the air inlet channel 210 decreases, and the airflow decreases accordingly. This variable cross-section design enables continuous adjustment of the airflow to meet the needs of different operating conditions. It can also be used in conjunction with an external fan to control the airflow and air velocity. The adaptation of the inner side of the inner end of the air inlet seat 200 to the inner end of the adjusting head 300 means that the two can fit tightly together. When the adjusting head 300 closes the air inlet channel 210, this adaptation relationship ensures a certain degree of sealing.

[0027] like Figure 1 As shown, the power mechanism 400 is fixed to a fixed frame 600. A fixed flange 610 is fixed to the end of the fixed frame 600 near the furnace body 100, and is fixedly connected to the air inlet hood 500. The fixed frame 600 serves to support and fix the power mechanism 400, ensuring its stability during operation and preventing displacement or damage due to vibration or other factors. The fixed flange 610 at the end of the fixed frame 600 near the furnace body 100 is fixedly connected to the air inlet hood 500. This connection method firmly integrates the fixed frame 600 and the air inlet hood 500, thus forming a relatively stable overall structure between the power mechanism 400 and the entire air intake system.

[0028] like Figure 1 As shown, the power mechanism 400 includes a cylinder and a drive shaft. A connecting rod 310 is fixed to the adjusting head 300. The connecting rod 310 is detachably fixed to the drive shaft. The connecting rod 310 passes through the fixed flange 610 and the air inlet shroud 500. The fixed flange 610 is provided with a sealing structure. The drive shaft is detachably fixed to the connecting rod 310 fixed to the adjusting head 300, transmitting the power generated by the cylinder to the adjusting head 300. When the drive shaft moves back and forth under the action of the cylinder, the connecting rod 310 moves accordingly, thereby driving the adjusting head 300 to move within the air inlet seat 200, thus changing the opening of the air inlet channel 210 and adjusting the air intake volume. The sealing structure on the fixed flange 610 is to prevent outside air from leaking through the gap between the connecting rod 310 and the fixed flange 610 and the air inlet shroud 500. The power mechanism 400 is an electric cylinder; in other optional embodiments, it can also be a pneumatic cylinder or a motor.

[0029] like Figure 1 As shown, the sealing structure includes a fixed seat 620 welded to the flange, a sealing packing 630 disposed between the fixed seat 620 and the connecting rod 310, and a detachable sealing pressure member 640 fixed to the fixed seat 620 abutting against the sealing packing 630. The sealing packing 630 is a material with good sealing performance, usually made of soft and elastic fibers or similar materials. When the sealing packing 630 is positioned between the fixed seat 620 and the connecting rod 310, and the sealing pressure member 640 abuts against the sealing packing 630, the sealing packing 630 is compressed and deformed. This deformation allows the sealing packing 630 to tightly fill the gap between the fixed seat 620 and the connecting rod 310, thereby preventing air leakage from the gap and achieving a sealing effect. The sealing pressure member 640 is detachably fixed to the fixed seat 620, which facilitates the installation, replacement, and maintenance of the sealing packing 630. When the sealing packing 630 needs to be replaced, the sealing pressure member 640 can be removed from the mounting base 620, the old sealing packing 630 can be taken out, the new sealing packing 630 can be installed, and then the sealing pressure member 640 can be fixed back on the mounting base 620 so that it abuts against the sealing packing 630 to restore the sealing function.

Claims

1. A gasifier with an adjustable air inlet device, characterized in that, The furnace includes a furnace body (100) and an air inlet device. The furnace body (100) has an installation port, and the air inlet device is installed at the installation port. The air inlet device includes an air inlet seat (200) fixed on the furnace body (100) and having an air inlet channel (210), an adjustment head (300) movably installed in the air inlet seat (200), and a power mechanism (400) for driving the adjustment head (300) to move. The adjustment head (300) moves to adjust the opening of the air inlet channel (210). An air inlet hood (500) is fixed on the outer wall of the furnace body (100). The air inlet hood (500) has an air inlet (510) and is connected to the air inlet channel (210).

2. A gasifier with an adjustable air inlet device according to claim 1, characterized in that, A fixing ring plate (110) is fixed to the edge of the mounting port, and the fixing ring plate (110) abuts against the outer wall of the air inlet seat (200).

3. A gasifier with an adjustable air inlet device according to claim 2, characterized in that, The outer end of the air inlet seat (200) has an outwardly protruding limiting part (220), and one end of the fixing ring plate (110) abuts against the limiting part (220).

4. A gasifier with an adjustable air inlet device according to claim 3, characterized in that, An L-shaped baffle is fixed to the furnace body (100) by bolts. One end of the baffle abuts against the outer wall of the furnace body (100), and the other end presses against the outer end of the air inlet seat (200).

5. A gasifier with an adjustable air inlet device according to claim 1, characterized in that, A guide seat (230) is fixed on the inner wall of the outer end of the air inlet seat (200), and multiple guide seats (230) are distributed at intervals.

6. A gasifier with an adjustable air inlet device according to claim 5, characterized in that, The air inlet seat (200) is provided with a plurality of circumferentially spaced adjusting screws (240) in the middle part, and the adjusting screws (240) penetrate the side wall of the air inlet seat (200) and contact the adjusting head (300).

7. A gasifier with an adjustable air inlet device according to claim 1, characterized in that, The outer radial direction of the inner end of the adjusting head (300) gradually decreases in the inner direction, and the inner side of the inner end of the air inlet seat (200) is adapted to the inner end of the adjusting head (300).

8. A gasifier with an adjustable air inlet device according to claim 1, characterized in that, The power mechanism (400) is fixed on a fixed frame (600), and the fixed frame (600) has a fixed flange (610) at one end near the furnace body (100) that is fixedly connected to the air inlet hood (500).

9. A gasifier with an adjustable air inlet device according to claim 8, characterized in that, The power mechanism (400) includes a cylinder and a drive shaft. A connecting rod (310) is fixed on the adjusting head (300). The connecting rod (310) is detachably fixed to the drive shaft. The connecting rod (310) passes through the fixed flange (610) and the air inlet shroud (500). The fixed flange (610) is provided with a sealing structure.

10. A gasifier with an adjustable air inlet device according to claim 9, characterized in that, The sealing structure includes a fixed seat (620) welded to the flange, a sealing packing (630) is provided between the fixed seat (620) and the connecting rod (310), and a sealing pressure member (640) is detachably fixed on the fixed seat (620) against the sealing packing (630).

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