Feeding device for pressurized gasification of dry pulverized coal

Abstract

The invention relates to the technical field of coal chemical industry, in particular to a dry pulverized coal pressurized gasification feeding device which comprises a pulverized coal bin, a lock hopper is arranged below the pulverized coal bin, a feeding hopper is arranged below the lock hopper, and the bottom end of the pulverized coal bin and the top end of the lock hopper are jointly and fixedly provided with a first output pipeline through bolts; a second output pipeline is fixedly installed at the bottom end of the lock hopper and the top end of the feeding hopper through bolts jointly, pulverized coal conveying is achieved through the pulverized coal bin lock hopper and the feeding hopper in cooperation with the first output pipeline, the second output pipeline and a third output pipeline, and a hexagonal prismatic splitter plate, a gear ring and a hexagonal conical plate are arranged in the first output pipeline. The first micro motor drives the gear to drive the gear ring to rotate, so that the hexagonal conical plate rotates to disperse pulverized coal, the diversion groove guides the pulverized coal to uniformly fall, the pulverized coal can be prevented from caking and bridging at the discharge port of the pulverized coal bunker, preliminary dispersion of the pulverized coal is ensured, the pulverized coal is stably conveyed to a downstream device, and the problem of conveying interruption caused by reduction of the fluidity of the pulverized coal is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of coal chemical industry, and in particular to a feeding device for pressurized gasification of dry coal powder. Background Art

[0002] Coal chemical industry is an energy and chemical industry that uses coal as raw material and converts coal into gas, liquid, solid fuel and chemicals through chemical methods. It is a key path to achieve clean and efficient utilization of coal and extend the value of the coal industry chain. Dry coal powder pressurized gasification is an advanced gasification technology in the coal chemical field. It uses a high-pressure environment to make dry coal powder react chemically with gasifying agents (such as oxygen and water vapor) to generate synthesis gas containing components such as CO and H2, providing core raw materials for downstream industries such as coal-to-olefins, coal-to-natural gas and IGCC power generation. In this process, dry coal powder needs to be accurately and stably transported to the gasifier by a special feeding device. Its design and operating performance directly affect the continuity of the gasification reaction, conversion efficiency and system safety. It is one of the core key equipment of the dry coal powder pressurized gasification system.

[0003] However, the existing feeding device for pressurized gasification of dry coal powder is not adaptable enough to the material properties of coal powder. When the moisture content of coal powder fluctuates (exceeding the reasonable range of 1%-2%), the particle size distribution is abnormal (deviating from the range of 5-90μm), or the fluidity decreases due to long-term storage time, coal powder is prone to agglomeration and bridging, causing blockage of the conveying pipeline. In addition, there is a lack of dynamic adjustment mechanism to match the changes in material properties, which seriously interferes with the continuity and stability of feeding. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a feeding device for pressurized gasification of dry coal powder to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to implement it: a feeding device for pressurized gasification of dry coal powder, comprising a pulverized coal bin, a lock bucket is provided below the pulverized coal bin, a feeding hopper is provided below the lock bucket, the bottom end of the pulverized coal bin and the top end of the lock bucket are jointly fixedly installed with a first output pipe by bolts, the bottom end of the lock bucket and the top end of the feeding hopper are jointly fixedly installed with a second output pipe by bolts, the bottom end of the feeding hopper is fixedly installed with a third output pipe by bolts, the outer surface of the lock bucket and the outer surface of the feeding hopper are fixedly connected with an air inlet pipe, and the outer surface of the pulverized coal bin, the outer surface of the lock bucket and the outer surface of the feeding hopper are fixedly connected with a lock bucket valve.

[0006] Preferably, six mounting grooves are provided on the inner wall of the top of the first output pipe near the pulverized coal bin discharge port, and a support plate is fixedly installed on the inner wall of each mounting groove. A hexagonal prism-shaped diverter plate is fixedly installed on the upper surfaces of the six support plates, and six diverter grooves are provided on the upper surface of the hexagonal prism-shaped diverter plate.

[0007] Preferably, a rotation groove is provided on the inner wall of the hexagonal prism diverter plate, and two positioning grooves are provided on the inner wall of the rotation groove. A gear ring is rotatably connected inside the rotation groove, and the upper surface and bottom surface of the gear ring are fixedly connected to positioning rings. The outer surface of each positioning ring is rotatably connected to the inner part of the positioning groove, and the inner wall of the gear ring is fixedly connected to a hexagonal conical plate.

[0008] Preferably, a driving groove is opened on the inner wall of the hexagonal prism diverter plate, and the inner walls of the driving groove are respectively fixedly connected with a first micro motor and a ball bearing, and the output end of the first micro motor and the inner ring of the ball bearing are jointly fixedly connected with a driving shaft, and the outer surface of the driving shaft is fixedly connected with a gear, and the outer surface of the gear is meshed with the outer surface of the gear ring.

[0009] Preferably, the inner wall of the second output pipe is fixedly connected to two corresponding first sealed bearings, the inner rings of the two first sealed bearings are commonly fixedly connected to a movable shaft, the outer surface of the movable shaft is fixedly connected to a counterweight guide plate, and the inner wall of the second output pipe is fixedly connected to a semicircular ring limit plate, and the upper surface of the counterweight guide plate is rotatably connected to the two ends of the semicircular ring limit plate through a pin shaft.

[0010] Preferably, the upper surface of the counterweight guide plate and the bottom surface of the semicircular limit plate are fixedly connected with three reset springs, the bottom surface of one side of the counterweight guide plate is fixedly connected with a balance spring, and the bottom end of the balance spring is fixedly connected with a counterweight block.

[0011] Preferably, the inner wall of the second output pipe is fixedly connected to two corresponding second sealed bearings, the inner rings of the two second sealed bearings are commonly fixedly connected to the crushing shaft, the outer surface of the second output pipe is fixedly connected to the second micro motor by bolts, the output end of the second micro motor passes through the interior of the second output pipe and is fixedly connected to one end of the crushing shaft, and the outer surface of the second output pipe corresponding to the crushing shaft is fixedly connected to four air intake cleaning pipes.

[0012] Preferably, the outer surface at the corner of the third output pipe is fixedly connected to an electromagnetic vibrator, the inner wall of the third output pipe is fixedly connected to a third sealed bearing, the outer surface of the third output pipe is fixedly connected to a third micro motor by bolts, the inner ring of the third sealed bearing is fixedly connected to a rotating shaft, the output end of the third micro motor passes through the interior of the third output pipe and is fixedly connected to one end of the rotating shaft, the outer surface of the rotating shaft is fixedly connected to six connecting shafts, and one end of each connecting shaft is fixedly connected to a scraper plate.

[0013] The beneficial effects of the present invention are:

[0014] 1. The present invention arranges a lock bucket and a feed hopper below the pulverized coal bin, and cooperates with the first output pipe, the second output pipe and the third output pipe to realize coal powder transportation. A hexagonal prism-shaped diverter plate, a gear ring and a hexagonal conical plate are arranged in the first output pipe. The first micro-motor drives the gear to drive the gear ring to rotate, so that the hexagonal conical plate rotates to disperse the coal powder. The diverter trough guides the coal powder to fall evenly, which can prevent the coal powder from agglomerating and bridging at the discharge port of the pulverized coal bin, ensure the initial dispersion of the coal powder, and provide good conditions for subsequent transportation. The air inlet pipe is used to introduce gas to fluidize the coal powder, so that the coal powder can be stably transported to the downstream device, avoiding the transportation interruption problem caused by the decrease in the fluidity of the coal powder.

[0015] 2. The present invention arranges a counterweight guide plate, a return spring, a balance spring and a counterweight block in the second output pipe, combines a crushing shaft and a second micro motor to crush the coal powder agglomerates, and uses an electromagnetic vibrator and a scraper plate to prevent powder accumulation in the corners of the third output pipe. When the coal powder flow rate or humidity changes, the counterweight guide plate automatically adjusts its opening through the counterweight block and the spring, the crushing shaft crushes large particles of coal powder, the electromagnetic vibrator vibrates the pipe, and the scraper plate removes powder accumulated on the pipe wall. It can dynamically adapt to changes in coal powder characteristics, continuously crush agglomerated coal powder, prevent pipe blockage, ensure feeding continuity and stability, and avoid the problem of unstable transportation caused by the lack of a dynamic adjustment mechanism in existing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 Schematic diagram of the cross-sectional three-dimensional structure of the first output pipe of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional enlarged structure of the mounting slot of the present invention;

[0019] Figure 4 Schematic diagram of the cross-sectional three-dimensional structure of the hexagonal prism-shaped diverter plate of the present invention;

[0020] Figure 5 It is a schematic diagram of the three-dimensional enlarged structure of the rotating groove of the present invention;

[0021] Figure 6 Schematic diagram of the three-dimensional structure of the meshing ring gear and gear of the present invention;

[0022] Figure 7 is a schematic diagram of a cross-sectional three-dimensional structure of the second output pipe of the present invention;

[0023] Figure 8 Schematic diagram of the three-dimensional structure of the return spring of the present invention;

[0024] Figure 9 It is a schematic diagram of the three-dimensional cross-sectional structure of the third output pipe of the present invention.

[0025] In the attached figure: 1, pulverized coal silo; 2, lock hopper; 3, second micro motor; 4, feed hopper; 5, electromagnetic vibrator; 6, third output pipe; 7, lock hopper valve; 8, second output pipe; 9, air inlet pipe; 10, first output pipe; 11, hexagonal prism-shaped diverter plate; 12, mounting groove; 13, support plate; 14, gear ring; 15, positioning ring; 16, first micro motor; 17, gear; 18, hexagonal cone plate; 19, diverter groove; 20, drive groove; 2 1. Positioning groove; 22. Rotating groove; 23. Drive shaft; 24. Ball bearing; 25. Counterweight guide plate; 26. Semicircular ring limit plate; 27. First sealed bearing; 28. Movable shaft; 29. ​​Second sealed bearing; 30. Crushing shaft; 31. Intake cleaning pipe; 32. Return spring; 33. Balance spring; 34. Counterweight; 35. Third micro motor; 36. Third sealed bearing; 37. Connecting shaft; 38. Rotating shaft; 39. Scraper. DETAILED DESCRIPTION

[0026] The following will describe various embodiments of the present invention in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0027] Example:

[0028] See also Figures 1 to 9 A feeding device for pressurized gasification of dry coal powder includes a pulverized coal bin 1, which is characterized in that a lock bucket 2 is provided below the pulverized coal bin 1, and a first output pipe 10 is fixedly installed at the bottom end of the pulverized coal bin 1 and the top end of the lock bucket 2 by bolts. Six mounting grooves 12 are provided on the inner wall of the top of the first output pipe 10 near the discharge port of the pulverized coal bin 1, and a support plate 13 is fixedly installed on the inner wall of each mounting groove 12. A hexagonal prism-shaped diverter plate 11 is fixedly installed on the upper surface of the six support plates 13, and six diverter grooves 19 are provided on the upper surface of the hexagonal prism-shaped diverter plate 11.

[0029] Working principle: The pulverized coal in the pulverized coal bin 1 falls to the first output pipe 10 under the action of gravity. The six mounting grooves 12 on the top of the pipe are embedded with the support plate 13, which evenly supports the hexagonal prism-shaped diverter plate 11 in a ring shape. The six diverter grooves 19 on the upper surface of the diverter plate are radially distributed at 60°. When the pulverized coal flows through, it is divided into six independent material flows by the trough body. Each material flow is guided along the trough wall and evenly dispersed to the pipe cross section, which can convert the concentrated discharge of the pulverized coal bin 1 into a uniformly dispersed flow, avoiding the arch bridging phenomenon formed by material accumulation in the traditional discharge method, allowing the pulverized coal to enter the lock bucket 2 stably, and at the same time reducing the probability of extrusion and agglomeration between particles, providing material conditions with good fluidity for subsequent transportation, and solving the problem of material agglomeration in the initial discharge stage.

[0030] See also Figures 1 to 9 The inner wall of the hexagonal prism-shaped diverter plate 11 is provided with a rotation groove 22, and the inner wall of the rotation groove 22 is provided with two positioning grooves 21. The interior of the rotation groove 22 is rotatably connected to the ring gear 14, and the upper surface and bottom surface of the ring gear 14 are fixedly connected to the positioning ring 15. The outer surface of each positioning ring 15 is rotatably connected to the interior of the positioning groove 21, and the inner wall of the ring gear 14 is fixedly connected to the hexagonal conical plate 18.

[0031] Working principle: The rotation groove 22 on the inner wall of the hexagonal prismatic diverter plate 11 is an annular groove, and the two positioning grooves 21 on its inner wall are symmetrically distributed up and down, forming a sliding fit with the positioning rings 15 on the upper and lower surfaces of the gear ring 14, which not only limits the axial displacement of the gear ring 14, but also allows its circumferential rotation. The hexagonal conical plate 18 fixed on the inner wall of the gear ring 14 is in the shape of a cone, and the angle between the cone surface and the vertical direction is 30°. When the coal powder falls and hits the cone surface, the hexagonal conical plate 18 can rotate slowly under the drive of the gear ring 14, through the rotation and stirring effect of the cone surface, and at the same time using the inclination angle of the cone surface to guide the coal powder to gather to the center of the pipeline, avoid the accumulation of particles at the edge of the diverter plate, and effectively prevent the agglomeration of medium particles from clogging the channel.

[0032] See also Figures 1 to 9 A driving groove 20 is provided on the inner wall of the hexagonal prism-shaped diverter plate 11. The inner walls of the driving groove 20 are fixedly connected to the first micro motor 16 and the ball bearing 24 respectively. The output end of the first micro motor 16 and the inner ring of the ball bearing 24 are fixedly connected to the driving shaft 23. The outer surface of the driving shaft 23 is fixedly connected to the gear 17. The outer surface of the gear 17 is meshed with the outer surface of the ring gear 14.

[0033] Working principle: The driving groove 20 is located on the inner wall of the hexagonal prismatic diverter plate 11, and the first micro motor 16 and the ball bearing 24 are fixed in the groove. The output shaft of the first micro motor 16 and the inner ring of the ball bearing 24 jointly support the driving shaft 23. The gear 17 on the shaft is engaged with the outer teeth of the ring gear 14. When the first micro motor 16 is running, the gear 17 drives the ring gear 14 to rotate, so that the hexagonal conical plate 18 produces a continuous stirring effect. The ball bearing 24 can reduce the rotational resistance of the driving shaft 23. The speed can be adjusted according to the characteristics of the coal powder to avoid particle adhesion caused by over-crushing, and realize dynamic adaptation to different material working conditions.

[0034] See also Figures 1 to 9 A feeding hopper 4 is provided below the lock bucket 2. The bottom end of the lock bucket 2 and the top end of the feeding hopper 4 are fixedly installed with a second output pipe 8 by bolts. The inner wall of the second output pipe 8 is fixedly connected to two corresponding first sealed bearings 27. The inner rings of the two first sealed bearings 27 are fixedly connected to a movable shaft 28. The outer surface of the movable shaft 28 is fixedly connected to a counterweight guide plate 25. The inner wall of the second output pipe 8 is fixedly connected to a semicircular limit plate 26. The upper surface of the counterweight guide plate 25 is rotatably connected to the two ends of the semicircular limit plate 26 through a pin shaft.

[0035] Working principle: The pulverized coal in the lock hopper 2 is transported to the feed hopper 4 through the second output pipe 8. The first sealed bearing 27 supports the movable shaft 28, and the movable shaft 28 drives the counterweight guide plate 25 to rotate around the pin shaft. The semicircular ring limit plate 26 limits the rotation range of the counterweight guide plate 25. When the pulverized coal flow rate changes, the counterweight guide plate 25 rotates under the impact force of the pulverized coal, automatically adjusting the channel cross-sectional area, balancing the pulverized coal flow rate, avoiding unstable transportation caused by sudden changes in flow rate, and ensuring that the pulverized coal enters the feed hopper 4 at an appropriate flow rate.

[0036] See also Figures 1 to 9 The upper surface of the counterweight guide plate 25 and the bottom surface of the semicircular limit plate 26 are fixedly connected with three return springs 32, the bottom surface of one side of the counterweight guide plate 25 is fixedly connected with a balance spring 33, and the bottom end of the balance spring 33 is fixedly connected with a counterweight block 34.

[0037] Working principle: The reset spring 32 connects the counterweight guide plate 25 and the semicircular limit plate 26, providing a reset force for the counterweight guide plate 25. The balance spring 33 and the counterweight block 34 form a balancing torque. When the pulverized coal flow rate increases, the counterweight guide plate 25 overcomes the elastic force of the reset spring 32 and the pulling force of the balance spring 33 and rotates to increase the cross-sectional area of ​​the channel. When the flow rate decreases, it resets under the action of the reset spring 32 and the balance spring 33, realizing dynamic adjustment of the pulverized coal flow rate, adapting to fluctuations in the pulverized coal flow rate, and ensuring the stability of the conveying process.

[0038] See also Figures 1 to 9 The inner wall of the second output pipe 8 is fixedly connected to two corresponding second sealed bearings 29, and the inner rings of the two second sealed bearings 29 are fixedly connected to the crushing shaft 30. The outer surface of the second output pipe 8 is fixedly connected to the second micro motor 3 by bolts. The output end of the second micro motor 3 passes through the interior of the second output pipe 8 and is fixedly connected to one end of the crushing shaft 30. The outer surface of the second output pipe 8 corresponding to the crushing shaft 30 is fixedly connected to four air intake cleaning pipes 31.

[0039] Working principle: The second micro motor 3 drives the crushing shaft 30 to rotate, and the second sealed bearing 29 supports the crushing shaft 30. The crushing shaft 30 crushes the coal powder clumps passing through the second output pipe 8. The air intake cleaning pipe 31 introduces gas to assist in cleaning the coal powder attached to the surface of the crushing shaft 30 to prevent the coal powder from sticking, ensuring the crushing effect of the crushing shaft 30, effectively crushing the coal powder clumps formed due to moisture fluctuations and other reasons, avoiding the coal powder clumps from clogging the pipeline, and improving the smoothness of coal powder transportation.

[0040] See also Figures 1 to 9The bottom end of the feeding hopper 4 is fixed with a third output pipe 6 by bolts, the outer surfaces of the lock bucket 2 and the outer surfaces of the feeding hopper 4 are fixedly connected with an air intake pipe 9, the outer surfaces of the pulverized coal bin 1, the outer surfaces of the lock bucket 2 and the outer surfaces of the feeding hopper 4 are fixedly connected with a lock bucket valve 7, the outer surface of the corner of the third output pipe 6 is fixedly connected to the electromagnetic vibrator 5, the inner wall of the third output pipe 6 is fixedly connected to the third sealed bearing 36, the outer surface of the third output pipe 6 is fixedly connected to the third micro motor 35 by bolts, the inner ring of the third sealed bearing 36 is fixedly connected to the rotating shaft 38, the output end of the third micro motor 35 passes through the interior of the third output pipe 6 and is fixedly connected to one end of the rotating shaft 38, the outer surface of the rotating shaft 38 is fixedly connected to six connecting shafts 37, and one end of each connecting shaft 37 is fixedly connected to a scraper plate 39.

[0041] Working principle: gas is introduced into the air inlet pipe 9 to fluidize the coal powder in the lock hopper 2 and the feed hopper 4. The lock hopper valve 7 controls the pressure of each tank and the inlet and outlet of the coal powder. The electromagnetic vibrator 5 at the corner of the third output pipe 6 vibrates to prevent the coal powder from accumulating at the corner. The third micro motor 35 drives the rotating shaft 38 to drive the connecting shaft 37 and the scraper plate 39 to rotate. The scraper plate 39 scrapes the coal powder attached to the inner wall of the third output pipe 6, and cooperates with the vibration of the electromagnetic vibrator 5 to thoroughly remove the accumulated powder in the pipeline, avoiding the accumulation of powder to block the pipeline, and ensuring that the coal powder is stably transported from the feed hopper 4 to the downstream device through the third output pipe 6, solving the problem of powder accumulation and blockage in the pipeline corner.

[0042] In summary, when the overall equipment is in use: the coal powder in the pulverized coal bin 1 falls to the first output pipe 10 under the action of gravity, and the six mounting grooves 12 on the top of the pipe are embedded with the support plate 13, which evenly supports the hexagonal prism-shaped diverter plate 11 in a ring shape. The six diverter grooves 19 on the upper surface of the diverter plate are radially distributed at 60 degrees, which divide the coal powder into six independent material flows and evenly disperse them to the pipe cross section, converting the concentrated material discharge from the discharge port of the pulverized coal bin 1 into a uniformly dispersed flow, avoiding the accumulation of materials to form an arch bridge, allowing the coal powder to stably enter the lock bucket 2, and at the same time reducing the probability of extrusion and agglomeration between particles. The teeth in the rotating groove 22 on the inner wall of the hexagonal prism-shaped diverter plate 11 The ring 14 realizes circumferential rotation through the sliding cooperation between the upper and lower positioning rings 15 and the positioning groove 21. The hexagonal conical plate 18 on its inner wall rotates slowly under the impact of the coal powder. The coal powder is guided to gather toward the center of the pipeline through the rotating stirring of the cone surface and the 30° inclination angle to prevent the medium-sized particles from agglomerating and clogging. The first micro motor 16 in the driving groove 20 is engaged with the gear ring 14 through the gear 17 on the driving shaft 23, driving the hexagonal conical plate 18 to rotate continuously. The ball bearing 24 reduces the rotation resistance of the driving shaft 23. The speed can be adjusted according to the characteristics of the coal powder to avoid excessive crushing and particle adhesion. The coal powder in the lock bucket 2 is output to the feed hopper 4 through the second output pipe 8. During transportation, the movable shaft 28 supported by the first sealed bearing 27 drives the counterweight guide plate 25 to rotate around the pin shaft, and the semicircular ring limit plate 26 limits the rotation range. When the coal powder flow rate changes, the counterweight guide plate 25 automatically adjusts the channel cross-sectional area under the action of the impact force to balance the coal powder flow rate. The reset spring 32 provides a reset force for the counterweight guide plate 25. The balance spring 33 and the counterweight block 34 form a balancing torque. When the flow rate increases, the guide plate overcomes the elastic force and the pulling force to rotate to increase the channel cross-sectional area. When the flow rate decreases, it resets to achieve dynamic flow regulation. The second micro motor 3 drives the crushing shaft 30 supported by the second sealed bearing 29 to rotate. The coal powder clumps are crushed, and gas is introduced into the four air intake cleaning pipes 31 to clean the coal powder on the surface of the crushing shaft 30 to prevent adhesion and effectively crush the coal powder clumps formed by moisture fluctuations. The air intake pipe 9 introduces gas to the lock hopper 2 and the feed hopper 4 to fluidize the coal powder. The lock hopper valve 7 controls the pressure of each tank and the inflow and outflow of coal powder. The electromagnetic vibrator 5 at the corner of the third output pipe 6 generates vibration to prevent powder accumulation. The third micro motor 35 drives the rotating shaft 38 to drive the scraper plates 39 on the six connecting shafts 37 to rotate, scraping off the accumulated powder on the inner wall of the pipe. The accumulated powder is completely removed with the help of vibration to ensure that the coal powder is stably transported from the feed hopper 4 to the downstream device through the third output pipe 6.

[0043] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A feeding device for pressurized gasification of dry pulverized coal, comprising a pulverized coal bunker (1), characterized in that: A lock bucket (2) is provided below the pulverized coal bin (1), and a feeding hopper (4) is provided below the lock bucket (2). The bottom end of the pulverized coal bin (1) and the top end of the lock bucket (2) are fixedly installed with a first output pipe (10) by bolts, the bottom end of the lock bucket (2) and the top end of the feeding hopper (4) are fixedly installed with a second output pipe (8) by bolts, and the bottom end of the feeding hopper (4) is fixedly installed with a third output pipe (6) by bolts. The outer surfaces of the lock bucket (2) and the outer surfaces of the feeding hopper (4) are fixedly connected with an air inlet pipe (9), and the outer surfaces of the pulverized coal bin (1), the lock bucket (2) and the feeding hopper (4) are fixedly connected with a lock bucket valve (7).

2. A feeding device for pressurized gasification of dry coal powder according to claim 1, characterized in that: Six mounting grooves (12) are provided on the inner wall of the top of the first output pipe (10) near the discharge port of the pulverized coal bin (1), a support plate (13) is fixedly installed on the inner wall of each mounting groove (12), a hexagonal prism-shaped diverter plate (11) is fixedly installed on the upper surface of the six support plates (13), and six diverter grooves (19) are provided on the upper surface of the hexagonal prism-shaped diverter plate (11).

3. A feeding device for pressurized gasification of dry coal powder according to claim 2, characterized in that: The inner wall of the hexagonal prism-shaped diverter plate (11) is provided with a rotation groove (22), the inner wall of the rotation groove (22) is provided with two positioning grooves (21), the interior of the rotation groove (22) is rotatably connected to a gear ring (14), the upper surface and the bottom surface of the gear ring (14) are fixedly connected to positioning rings (15), the outer surface of each positioning ring (15) is rotatably connected to the interior of the positioning groove (21), and the inner wall of the gear ring (14) is fixedly connected to a hexagonal conical plate (18).

4. A feeding device for pressurized gasification of dry coal powder according to claim 3, characterized in that: The inner wall of the hexagonal prism-shaped diverter plate (11) is provided with a driving groove (20), and the inner wall of the driving groove (20) is fixedly connected to a first micro motor (16) and a ball bearing (24), respectively. The output end of the first micro motor (16) and the inner ring of the ball bearing (24) are fixedly connected to a driving shaft (23), and the outer surface of the driving shaft (23) is fixedly connected to a gear (17), and the outer surface of the gear (17) is meshed with the outer surface of the gear ring (14).

5. The feeding device for pressurized gasification of dry coal powder according to claim 1, characterized in that: The inner wall of the second output pipe (8) is fixedly connected to two first sealed bearings (27) corresponding to each other, the inner rings of the two first sealed bearings (27) are fixedly connected to a movable shaft (28), the outer surface of the movable shaft (28) is fixedly connected to a counterweight guide plate (25), and the inner wall of the second output pipe (8) is fixedly connected to a semicircular ring-shaped limit plate (26), and the upper surface of the counterweight guide plate (25) and the two ends of the semicircular ring-shaped limit plate (26) are rotatably connected through a pin shaft.

6. A feeding device for pressurized gasification of dry pulverized coal according to claim 5, characterized in that: The upper surface of the counterweight guide plate (25) and the bottom surface of the semicircular ring-shaped limiting plate (26) are fixedly connected to three return springs (32); the bottom surface of one side of the counterweight guide plate (25) is fixedly connected to a balance spring (33); and the bottom end of the balance spring (33) is fixedly connected to a counterweight block (34).

7. The feeding device for pressurized gasification of dry coal powder according to claim 1, characterized in that: The inner wall of the second output pipe (8) is fixedly connected to two corresponding second sealed bearings (29), and the inner rings of the two second sealed bearings (29) are fixedly connected to a crushing shaft (30). The outer surface of the second output pipe (8) is fixedly connected to a second micro motor (3) by bolts. The output end of the second micro motor (3) passes through the interior of the second output pipe (8) and is fixedly connected to one end of the crushing shaft (30). The outer surface of the second output pipe (8) corresponding to the crushing shaft (30) is fixedly connected to four air intake cleaning pipes (31).

8. The feeding device for pressurized gasification of dry pulverized coal according to claim 1, characterized in that: The outer surface of the corner of the third output pipe (6) is fixedly connected to an electromagnetic vibrator (5), the inner wall of the third output pipe (6) is fixedly connected to a third sealed bearing (36), the outer surface of the third output pipe (6) is fixedly connected to a third micro motor (35) by bolts, the inner ring of the third sealed bearing (36) is fixedly connected to a rotating shaft (38), the output end of the third micro motor (35) passes through the interior of the third output pipe (6) and is fixedly connected to one end of the rotating shaft (38), the outer surface of the rotating shaft (38) is fixedly connected to six connecting shafts (37), and one end of each connecting shaft (37) is fixedly connected to a scraper plate (39).

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