Coal storage device of pulverized coal gasifier

Abstract

The utility model relates to coal gas generating equipment technical field discloses a coal storage device of pulverized coal gasification furnace, including coal storage hopper, the rear surface lower extreme of coal storage hopper is provided with opening and closing mechanism, and the front surface and inside of coal storage hopper are provided with anti -blocking mechanism jointly, the utility model discloses a anti -blocking mechanism is provided with, and anti -blocking mechanism effectively solved the jam problem that the coal powder leads to electrostatic force adsorption, water content agglomeration, particle bridging or inner wall adhesion, the stirring vane can dynamically break up the coal body of group coal and scatter the mechanical interlock between particles, and the scraper assembly continuously scrapes the wall adhesive layer of bin through the elastic compensation mechanism, and the flow line type material guiding design of three -segment type coal storage structure is combined, and the coal powder flow resistance is reduced significantly, the device activates the function of breaking down in the process of opening and closing linkage simultaneously, avoids the intermittent operation defect of traditional pneumatic arch breaking, can prevent the metamorphic, gas channeling and local cavity risk caused by coal powder retention, improves the continuity and reliability of the coal feeding system as a whole.

Description

Technical Field

[0001] This utility model relates to the technical field of coal gasification equipment, specifically a coal storage device for a pulverized coal gasification furnace. Background Technology

[0002] Currently, coal gasification equipment is used in normal industrial production and daily life to convert coal into coal gas. This process requires the use of pulverized coal gasifiers, which are equipped with coal storage devices. However, due to imperfections in the design of existing pulverized coal gasifiers, blockages often occur during coal feeding. This can lead to a lack of pulverized coal during the normal operation of the gasifier, easily causing gas leakage.

[0003] Chinese patent discloses a coal storage device for a pulverized coal gasifier (authorization announcement number CN202595067U). This patented technology is located on the upper part of the screw feeder. Its straight section + conical section + straight section structure design effectively prevents coal blockage during the coal feeding process; it ensures that during equipment operation, the coal feeder sealing section will not be insufficiently sealed due to lack of coal, thus preventing gas leakage.

[0004] Although it optimizes the flow path of pulverized coal by improving the shape of the silo (such as the combination of straight and conical sections), thus reducing the risk of bridging and blockage caused by the weight of the pulverized coal to some extent, its anti-blockage effect still has significant limitations:

[0005] First, static structural improvements cannot cope with dynamic blockage factors such as coal powder agglomeration, electrostatic adsorption between particles, or adhesion to the inner wall caused by fluctuations in moisture content, and manual intervention or additional arch-breaking devices are still required.

[0006] Secondly, when pulverized coal remains in the silo for a long time, the adhesive layer on the silo wall is prone to caking due to changes in temperature and humidity. This not only increases flow resistance but also causes local deterioration of the pulverized coal, affecting the efficiency of the gasification reaction. Utility Model Content

[0007] The purpose of this utility model is to provide a coal storage device for a pulverized coal gasifier to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A coal storage device for a pulverized coal gasifier includes a coal storage hopper. An opening and closing mechanism is provided at the lower end of the rear surface of the coal storage hopper. An anti-blocking mechanism is provided on the front surface and inside of the coal storage hopper. The anti-blocking mechanism includes an L-shaped plate and a support plate. A motor is fixedly connected to the front surface of the L-shaped plate, and a support rod is fixedly connected to the output end of the motor. A rotating rod is rotatably connected through the inside of the support plate. Gears are fixedly connected to the rear end of the support rod and the upper end of the rotating rod. Multiple stirring blades are fixedly connected to the outside of the rotating rod, and a scraper assembly is provided below the support plate and above the uppermost stirring blade on the outside of the rotating rod.

[0010] As a further embodiment of this utility model: the opening and closing mechanism includes an L-shaped plate, a telescopic cylinder is fixedly connected to the rear surface of the L-shaped plate, and a baffle is fixedly connected to the telescopic end of the telescopic cylinder.

[0011] As a further embodiment of this utility model: the scraper assembly includes a slide rod, a spring is fixedly connected to the right end of the slide rod, and a slide tube is movably connected to the outside of the slide rod, and a scraper is fixedly connected to the left end of the slide rod.

[0012] As a further embodiment of this utility model: the rear end of the L-shaped plate is fixed to the front surface of the coal storage hopper, the end of the support plate is fixed to the inner surface of the coal storage hopper, the support rod moves through the front surface of the coal storage hopper, and the two gears are meshed and connected.

[0013] As a further embodiment of this utility model: the front end of the L-shaped plate is fixed to the rear surface of the coal storage hopper, and the baffle is attached to the lower surface of the coal storage hopper.

[0014] As a further embodiment of this utility model: the right end of the spring is fixed to the inner right side surface of the slide tube, the right end of the slide tube is fixed to the outside of the rotating rod, and the scraper is attached to the inner surface of the coal storage hopper.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention features an anti-blocking mechanism that effectively solves the blockage problem caused by electrostatic adsorption, moisture agglomeration, particle bridging, or adhesion to the inner wall of pulverized coal. The stirring blades dynamically break up agglomerated coal and disperse the mechanical interlocking between particles. The scraper assembly continuously scrapes away the adhesive layer on the bin wall through an elastic compensation mechanism. Combined with the streamlined material guiding design of the three-section coal storage structure, the flow resistance of pulverized coal is significantly reduced. The device simultaneously activates the anti-blocking function during the opening and closing linkage process, avoiding the intermittent operation defects of traditional pneumatic arch breaking and preventing the risks of deterioration, gas leakage, and local cavities caused by pulverized coal retention, thus improving the continuity and reliability of the coal feeding system as a whole. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the coal storage device for a pulverized coal gasification furnace;

[0018] Figure 2 This is a schematic diagram of the opening and closing mechanism in the coal storage device of a pulverized coal gasifier.

[0019] Figure 3 This is a schematic diagram of the anti-blocking mechanism in the coal storage device of a pulverized coal gasifier;

[0020] Figure 4 This is an exploded view of the scraper assembly in the coal storage device of a pulverized coal gasifier.

[0021] In the diagram: 1. Coal storage hopper; 2. Opening and closing mechanism; 3. L-shaped plate one; 4. Telescopic cylinder; 5. Baffle; 6. Anti-blocking mechanism; 7. L-shaped plate two; 8. Support plate; 9. Motor; 10. Support rod; 11. Rotating rod; 12. Gear; 13. Agitator blade; 14. Scraper assembly; 15. Slide rod; 16. Spring; 17. Slide tube; 18. Scraper. Detailed Implementation

[0022] Please see Figure 1 and Figure 2 In this embodiment of the utility model, a coal storage device for a pulverized coal gasification furnace includes a coal storage hopper 1. An opening and closing mechanism 2 is provided at the lower end of the rear surface of the coal storage hopper 1. The opening and closing mechanism 2 includes an L-shaped plate 3. The front end of the L-shaped plate 3 is fixed to the rear surface of the coal storage hopper 1. A telescopic cylinder 4 is fixed to the rear surface of the L-shaped plate 3. A baffle 5 is fixed to the telescopic end of the telescopic cylinder 4. The baffle 5 is attached to the lower surface of the coal storage hopper 1.

[0023] The coal storage hopper 1 is installed above the feed inlet of the screw feeder, which is used to transport pulverized coal to the pulverized coal gasification furnace.

[0024] The coal storage hopper 1 consists of an upper straight section, a middle conical section fixed to the upper straight section and forming an integral part therewith, and a lower straight section fixed to the middle conical section and forming an integral part therewith;

[0025] The telescopic cylinder 4 is preferably a pneumatic cylinder. Its initial state is the extended state, at which time the baffle 5 blocks the lower end of the coal storage hopper 1. After the telescopic cylinder 4 retracts, the baffle 5 will no longer block the coal storage hopper 1.

[0026] exist Figure 1 , Figure 3 and Figure 4In the middle section: An anti-blocking mechanism 6 is provided on both the front surface and the interior of the coal storage hopper 1. The anti-blocking mechanism 6 includes an L-shaped plate 7 and a support plate 8. The rear end of the L-shaped plate 7 is fixed to the front surface of the coal storage hopper 1, and the end of the support plate 8 is fixed to the interior surface of the coal storage hopper 1. A motor 9 is fixed to the front surface of the L-shaped plate 7, and a support rod 10 is fixed to the output end of the motor 9. The support rod 10 movably passes through the front surface of the coal storage hopper 1. A rotating rod 11 is rotatably connected through the interior of the support plate 8. Gears 12 are fixed to the rear end of the support rod 10 and the upper end of the rotating rod 11. The wheel 12 is engaged with the rotating rod 11. Multiple stirring blades 13 are fixedly connected to the outside of the rotating rod 11. A scraper assembly 14 is provided on the outside of the rotating rod 11 below the support plate 8 and above the uppermost stirring blade 13. The scraper assembly 14 includes a slide rod 15. A spring 16 is fixedly connected to the right end of the slide rod 15. The right end of the spring 16 is fixedly connected to the inner right side surface of the slide tube 17. The slide tube 17 is movably connected to the outside of the slide rod 15. The right end of the slide tube 17 is fixedly connected to the outside of the rotating rod 11. A scraper 18 is fixedly connected to the left end of the slide rod 15. The scraper 18 is attached to the inner surface of the coal storage hopper 1.

[0027] Rotating rod 11 is rotatably connected to support plate 8 via a pedestal bearing;

[0028] The motor 9 drives the rotating rod 11 to rotate through the meshing of two gears 12;

[0029] The stirring blade 13 is used to stir the pulverized coal, so that the pulverized coal moves and avoids the phenomenon of pulverized coal clumping due to moisture or other factors during discharge, which would cause discharge blockage.

[0030] Under the action of the spring, the scraper 18 always sticks to the inner wall of the coal storage hopper 1 to scrape off the pulverized coal adhering to the inner wall, so as to avoid long-term adhesion and deterioration due to non-discharge.

[0031] The slide bar 15 includes a bar body and a C-shaped plate fixed to the left end of the bar body. The C-shaped plate is fixed to the outside of the scraper 18 by bolts, realizing the detachable function of the scraper 18.

[0032] The working principle of this utility model is as follows: When material needs to be discharged, the telescopic cylinder 4 retracts, causing the baffle 5 to move backward, releasing the seal on the lower port of the coal storage hopper 1, and the coal powder falls to the screw feeder through the lower straight section; at the same time, the motor 9 drives the rotating rod 11 to rotate through the meshing gear 12, driving the stirring blade 13 to crush and stir the coal powder to prevent clumping and blockage; when the rotating rod 11 rotates, the spring 16 pushes the sliding rod 15 to keep the scraper 18 in close contact with the inner wall of the coal storage hopper 1, and the wear is compensated by the extension and retraction of the sliding rod 15 in the sliding tube 17, scraping off the coal powder adhering to the inner wall.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A coal storage device for a pulverized coal gasification furnace, comprising a coal storage hopper (1), wherein an opening and closing mechanism (2) is provided at the lower end of the rear surface of the coal storage hopper (1), characterized in that, The front surface and interior of the coal storage hopper (1) are provided with an anti-blocking mechanism (6). The anti-blocking mechanism (6) includes an L-shaped plate (7) and a support plate (8). A motor (9) is fixedly connected to the front surface of the L-shaped plate (7). A support rod (10) is fixedly connected to the output end of the motor (9). A rotating rod (11) is rotatably connected through the interior of the support plate (8). A gear (12) is fixedly connected to the rear end of the support rod (10) and the upper end of the rotating rod (11). Multiple stirring blades (13) are fixedly connected to the outside of the rotating rod (11). A scraper assembly (14) is provided on the outside of the rotating rod (11) below the support plate (8) and above the uppermost stirring blade (13).

2. The coal storage device for a pulverized coal gasification furnace according to claim 1, characterized in that, The opening and closing mechanism (2) includes an L-shaped plate (3), and a telescopic cylinder (4) is fixedly connected to the rear surface of the L-shaped plate (3). A baffle (5) is fixedly connected to the telescopic end of the telescopic cylinder (4).

3. The coal storage device for a pulverized coal gasification furnace according to claim 1, characterized in that, The scraper assembly (14) includes a slide rod (15), a spring (16) is fixedly connected to the right end of the slide rod (15), and a slide tube (17) is movably connected to the outside of the slide rod (15). A scraper (18) is fixedly connected to the left end of the slide rod (15).

4. The coal storage device for a pulverized coal gasification furnace according to claim 1, characterized in that, The rear end of the L-shaped plate (7) is fixed to the front surface of the coal storage hopper (1), the end of the support plate (8) is fixed to the inner surface of the coal storage hopper (1), the support rod (10) moves through the front surface of the coal storage hopper (1), and the two gears (12) mesh and connect.

5. The coal storage device for a pulverized coal gasification furnace according to claim 2, characterized in that, The front end of the L-shaped plate (3) is fixed to the rear surface of the coal storage hopper (1), and the baffle (5) is attached to the lower surface of the coal storage hopper (1).

6. The coal storage device for a pulverized coal gasification furnace according to claim 3, characterized in that, The right end of the spring (16) is fixed to the inner right side surface of the slide tube (17), the right end of the slide tube (17) is fixed to the outside of the rotating rod (11), and the scraper (18) is attached to the inner surface of the coal storage hopper (1).

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