CN216995894U - Flying dust storehouse unloader - Google Patents

Abstract

The application provides a flying dust storehouse unloader includes: the fly ash bin, the heat tracing and heat insulating device, the air cannon, the gasification plate, the disc feeder and the discharge valve are arranged on the fly ash bin and used for preventing the fly ash from being hardened and bridged and enhancing the flowability of the fly ash; the disc feeder is arranged at the discharge port of the fly ash bin and used for realizing blanking buffering and preventing blockage; the discharge valve is connected with the discharge gate of disk feeder, adopts packing sealed and airtight, strengthens the leakproofness, reduces to emit the ash. The unloading of fly ash storehouse among the prior art has been solved in this application is not smooth, easily blocks up in discharge gate department, and the discharge valve leakproofness is poor, the problem of easy ash of overflowing.

Description

Flying dust storehouse unloader

Technical Field

The application relates to a flying ash field of handling especially relates to a flying ash unloader.

Background

The incineration fly ash is the collected material of the flue gas purification system and the bottom ash settled at the bottom of the flue and the chimney in the municipal domestic waste incineration disposal process. The particle size of the fly ash particles is less than 100 mu m, the surface of the fly ash particles is rough, the fly ash particles have larger specific surface and higher porosity, and the characteristics of the fly ash particles are large viscosity and poor flowability; and the fly ash contains a large amount of salt, so that the fly ash is easy to absorb moisture and form knots. In addition, the incineration fly ash often contains heavy metals with high concentration, such as Hg, Pb, Cd, Cu, Cr, Zn and the like, and the heavy metals mainly exist in the form of aerosol small particles and are enriched on the surfaces of fly ash particles; meanwhile, the incineration fly ash also contains less dioxin and furan, so the incineration fly ash has strong potential hazard.

The current fly ash storehouse can set up the combination of heat tracing heat preservation and air bubble, air bubble and gasification board at the cone part usually, prevents that the fly ash from condensing and forming the bridging together and then blockking up the feed opening, influences the steady operation of system, and the discharge gate bore of fly ash storehouse is 300 ~ 500mm generally, and the ejection of compact adopts star type discharge valve or spiral discharge valve. However, the existing fly ash bin has the following defects:

(1) due to the reasons of viscosity, humidity and the like, the fly ash in the fly ash bin can be hardened in the bin, so that bridging can occur at a discharge port, and the fly ash cannot be discharged normally; meanwhile, the spiral or star-shaped discharge valve has poor sealing performance, so that ash is easily emitted, and the health of workers is harmed;

(2) due to the problem of spiral or star-shaped discharge valve type selection, the discharge opening of the fly ash bin is small (generally 400-500 mm), so that the fly ash discharge is easy to bridge and block; the fly ash bin discharge gate direct intercommunication star type discharge valve, star type discharge valve can be by direct stifled dying, block after long-time the use, can not smoothly the unloading.

Disclosure of Invention

An object of this application is to provide a flying dust storehouse unloading composite set, solves the unloading of current flying dust storehouse not smooth and easy, easily blocks up, the poor problem of leakproofness.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a fly ash bin unloader includes:

the bottom of the fly ash bin is provided with a discharge hole;

the heat tracing and heat insulating device is arranged on the outer wall of the fly ash bin and is used for heating and insulating materials in the fly ash bin;

the air cannon is arranged on the fly ash bin and used for ejecting impact airflow to act on the materials in the fly ash bin;

the gasification plate is arranged on the fly ash bin and is used for gasifying the dust materials in the fly ash bin;

the disc feeder is arranged at the discharge port of the fly ash bin and used for realizing blanking buffering;

and the discharge valve is connected with the discharge port of the disc feeder.

Further, the heat tracing and heat insulating device, the air cannon and the gasification plate are sequentially arranged from top to bottom along the blanking direction.

Further, the working temperature of the heat tracing and heat preserving device is 80-110 ℃.

Further, the air cannon is arranged on the outer wall of the fly ash bin, and a jetting pipe of the air cannon extends into the fly ash bin.

Further, the gasification board includes carborundum board and box, the box is installed fly the outer wall in ash bin, the carborundum board extends to fly in the ash bin.

Further, disk feeder includes inner tube, urceolus and carousel, the urceolus is around setting up the inner tube outside, the carousel rotationally sets up the inner tube with the lower part of urceolus, the upper end of inner tube with fly ash bin the discharge gate intercommunication, the lower extreme of inner tube with the carousel is relative, the bin outlet sets up the lower extreme of urceolus, be suitable for when the carousel rotates with the material of inner tube takes extremely the urceolus, set up the scraper on the carousel, the scraper is located in the urceolus, the scraper is suitable for when the carousel rotates will material in the urceolus takes extremely the bin outlet department.

Further, the diameter of the discharge port is the same as that of the inner cylinder, and the diameter of the discharge port is 1000-1200 mm.

Furthermore, a gate valve is arranged between the discharge opening and the discharge valve of the disc feeder and is suitable for intercepting fly ash in a pipeline.

Furthermore, the discharge valve adopts packing seal and air seal.

Furthermore, star-shaped discharge valves are selected for the discharge valves.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the fly ash bin is provided with a heat tracing and heat insulating device, an air cannon and a gasification plate for arch breaking and gasification, so that the fly ash is prevented from being hardened and blocked, the fluidity of the material is increased, and the material is discharged smoothly;

(2) the discharge port of the fly ash bin is communicated with the disc feeder, and the disc feeder enables fly ash in the fly ash bin to uniformly fall into the discharge valve, so that the condition of fly ash blanking blockage is reduced, manual ash picking work is avoided, and the risk of contact of operators with the fly ash is reduced;

(3) star type discharge valve is chooseed for use to the discharge valve, guarantees that the unloading measurement is controllable, and the discharge valve adopts packing seal and airtight seal, and the gas tightness performance of discharge valve strengthens greatly, reduces to emit the ash, reduces flying dust and harms to operating personnel's health.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is a schematic structural view of a disk feeder in the present application;

fig. 3 is a schematic view of the structure of the rotary disk in the present application.

In the figure: 1. fly ash bin; 11. a discharge port; 2. a heat tracing and heat insulating device; 3. an air cannon; 4. a gasification plate; 5. a disc feeder; 51. an inner barrel; 52. an outer cylinder; 53. a discharge outlet; 54. a turntable; 6. a discharge valve.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, the present application provides a fly ash silo unloading composite set, including: the bottom of the fly ash bin 1 is provided with a discharge hole 11; the heat tracing and heat insulating device 2 is arranged on the outer wall of the fly ash bin 1 and is used for heating and insulating materials in the fly ash bin 1; the air cannon 3 is arranged on the fly ash bin 1 and used for ejecting impact air flow to act on the materials in the fly ash bin 1; the gasification plate 4 is arranged on the fly ash bin and is used for gasifying the dust material in the fly ash bin 1; the disc feeder 5 is arranged at the discharge port 11 of the fly ash bin 1 and is used for realizing blanking buffering; and the discharge valve 6 is connected with the discharge port 53 of the disc feeder 5.

The heat tracing and heat insulating device 2, the air cannon 3 and the gasification plate 4 are sequentially arranged from top to bottom along the blanking direction. The fly ash bin 1 is provided with the heat tracing and heat insulating device 2, the air cannon 3 and the gasification plate 4, so that the fly ash and the inner wall of the fly ash bin 1 can be prevented from skinning, and the fly ash can be ensured to flow smoothly.

The working temperature of the heat tracing and heat preserving device 2 is 80-110 ℃. Preferably, the heat tracing and heat insulating device 2 is an electric tracing band which is tightly attached to the outer wall of the fly ash bin 1, can automatically adjust the output power along with the temperature change of a heated system, and automatically limits the heating temperature; the electric tracing band can also be arbitrarily truncated or used in a long way within a certain range, and multiple cross overlapping is allowed. The electric tracing band has no high-temperature hot spot and uniform heating, and can ensure that the fly ash bin 1 is uniformly heated. The fly ash contains salt and is easy to absorb moisture and harden, the hardened fly ash can be skinned with the side wall of the silo, the flowability is poor, the hardened large blocks can block a discharge port, the temperature of the electric tracing band is set to be 80-110 ℃, the moisture in the fly ash is not easy to condense, and therefore the problem that the fly ash is easy to absorb moisture and harden to block the discharge port is solved.

The air cannon 3 is arranged on the outer wall of the fly ash bin 1, and a blowing pipe of the air cannon 3 extends into the fly ash bin 1. The blowing pipe of the air cannon 3 can suddenly jet strong airflow, the strong airflow directly rushes into a blocking fault area for storing the fly ash at a speed exceeding Mach (sonic speed), and the suddenly released expansion shock wave overcomes the static friction between the fly ash, so that the fly ash in the container can flow again. After the fly ash bridge frame is damaged by airflow, fly ash cannot be adhered to or dirty the inner chamber wall of the fly ash chamber 1, and the air cannon is an ideal blockage clearing and soot blowing device which is clean, pollution-free and low in energy consumption.

The gasification plate 4 comprises a silicon carbide plate and a box body, the box body is connected with a flange and is installed on the outer wall of the fly ash bin 1, and the silicon carbide plate extends into the fly ash bin 1. When discharging, the heated compressed air is introduced through the connecting pipe at the bottom of the gasification plate 4, and the compressed air is filtered by the gasification plate formed by sintering the silicon carbide to form uniform and fine airflow, so that the fly ash sinking in the bin body is in a loose state and is fully fluidized, the flowing property of the fly ash is increased, the discharging is smooth, the fly ash is prevented from bridging and arching in the bin body, and the continuity, stability and safety of the discharging are ensured.

As shown in fig. 2 to 3, the disk feeder 5 includes an inner cylinder 51, an outer cylinder 52 and a rotary table 54, the outer cylinder 52 is arranged around the outer side of the inner cylinder 51, the rotary table 54 is rotatably arranged at the lower parts of the inner cylinder 51 and the outer cylinder 52, the upper end of the inner cylinder 51 is communicated with the discharge port 11 of the fly ash bin 1, the lower end of the inner cylinder 51 is opposite to the rotary table 54, a discharge port 53 is arranged at the lower end of the outer cylinder 52, the rotary table 54 is suitable for bringing the material in the inner cylinder 51 to the outer cylinder 52 when rotating, a scraper is arranged on the rotary table 54 and is positioned in the outer cylinder 52, and the scraper is suitable for bringing the material in the outer cylinder 52 to the discharge port 53 when the rotary table 54 rotates. Specifically, when the disk feeder operates, the motor drives the central shaft through the speed reducer via the coupling, and further drives the rotating disk 54 to rotate, the fly ash rotates along with the rotating disk 54, and simultaneously moves towards the direction of the discharge opening 53, and the fly ash enters the discharge valve 6 via the discharge opening 53; meanwhile, the scraper can be adjusted, so that the discharge amount of the fly ash can be adjusted.

The disc feeder 5 may be a disc feeder of various structures in the prior art, and the disc feeder 5 given in this application is only an exemplary embodiment and does not limit the application to which the disc feeder of this structure must be applied.

The diameter of the discharge port 11 is the same as that of the inner cylinder 51, and the diameter of the discharge port 11 is 1000 mm-1200 mm. The fly ash bin 1 and the inner cylinder 51 of the disc feeder 5 have the same diameter and can be directly connected without installing an additional connecting device. In the existing fly ash bin blanking device, a discharge port 11 is usually directly connected with a discharge valve 6, so that the diameter of the discharge port 11 is small (generally 400 mm-500 mm), and the fly ash discharge is easy to bridge and block due to the small discharge port; after the discharge port 11 communicates with the inner cylinder 51 of the disk feeder 5 in the application, the diameter of the discharge port 11 is increased to 1000 mm-1200 mm, so that fly ash is not easy to block, and discharging is smoother.

A gate valve is also arranged between the discharge port 53 of the disk feeder 5 and the discharge valve 6 and is suitable for cutting off fly ash in the pipeline. The gate valve is one of the most commonly used stop valves, and can be closed to stop the fly ash in the pipeline when the blanking device stops working.

The discharge valve 6 adopts packing seal and air seal. The packing seals mainly through the axle and the inseparable laminating of sealing material realizes good leakproofness and stability, but because the axle construction directly contacts with sealing material, often in long-time operation in-process, sealing material can produce great wearing and tearing to the axle, reduces the life of axle very easily. Therefore, the material selection of the packing sealing mode is a very important factor. Preferably, the packing sealing material is a novel PTFE material, the material has good material performance, the friction coefficient is low, the material is very smooth, the thermal expansion coefficient also meets the corresponding requirement, and the influence on the discharge valve is small.

The hermetic seal is a sealing device that seals the gap between the rotating shafts with compressed air and prevents leakage of the working medium. The air seal has the characteristics of simple structure and no speed and temperature limitation, and is usually used for sealing rotary mechanical equipment with low pressure difference. The star-shaped discharge valve is additionally provided with an air seal under the condition of packing sealing, and compressed air enters the gap of the rotary shaft to block the gap of the rotary shaft so as to prevent the leakage of fly ash.

The discharge valve 6 adopts a star-shaped discharge valve. The structure of the star-type discharge valve is composed of a rotor impeller with a plurality of blades, a shell, a sealing element, a speed reducer, a motor and the like. The fly ash falls down by self-weight, fills in gaps among the blades, and is discharged from the lower part of the star-shaped discharge valve along with the rotation of the blades, and the star-shaped discharge valve can realize quantitative and continuous discharge.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. The utility model provides a flying dust storehouse unloader which characterized in that includes:

the bottom of the fly ash bin is provided with a discharge hole;

the heat tracing and heat insulating device is arranged on the outer wall of the fly ash bin and is used for heating and insulating materials in the fly ash bin;

the air cannon is arranged on the fly ash bin and used for ejecting impact air flow to act on the materials in the fly ash bin;

the gasification plate is arranged on the fly ash bin and is used for gasifying the dust materials in the fly ash bin;

the disc feeder is arranged at the discharge port of the fly ash bin and used for realizing blanking buffering;

and the discharge valve is connected with the discharge port of the disc feeder.

2. The blanking device of a fly ash bin according to claim 1, wherein the heat tracing and insulating device, the air cannon and the gasification plate are arranged in sequence from top to bottom along the blanking direction.

3. The blanking device of the fly ash bin as set forth in claim 2, wherein the working temperature of the heat tracing and heat preserving device is 80-110 ℃.

4. A fly ash silo blanking device as defined in claim 2 wherein the air cannon is located on the outer wall of the fly ash silo and the injection lance of the air cannon extends into the fly ash silo.

5. A fly ash silo blanking device as defined in claim 2 wherein the gasification plate includes a silicon carbide plate and a box mounted to an outer wall of the fly ash silo, the silicon carbide plate extending into the fly ash silo.

6. The fly ash bin discharging device according to any one of claims 1 to 5, wherein the disk feeder comprises an inner cylinder, an outer cylinder and a rotary table, the outer cylinder is arranged around the outer side of the inner cylinder, the rotary table is rotatably arranged at the lower parts of the inner cylinder and the outer cylinder, the upper end of the inner cylinder is communicated with the discharge hole of the fly ash bin, the lower end of the inner cylinder is opposite to the rotary table, the discharge hole is arranged at the lower end of the outer cylinder, the rotary table is suitable for bringing materials in the inner cylinder to the outer cylinder when rotating, a scraper is arranged on the rotary table and positioned in the outer cylinder, and the scraper is suitable for bringing the materials in the outer cylinder to the discharge hole when rotating.

7. The blanking device of the fly ash bin as claimed in claim 6, wherein the diameter of the discharge port is the same as that of the inner cylinder, and the diameter of the discharge port is 1000mm to 1200 mm.

8. A fly ash silo blanking device as defined in claim 6 wherein a gate valve is also provided between the discharge opening and the discharge valve of the disc feeder, the gate valve being adapted to intercept fly ash in the pipeline.

9. A fly ash silo blanking device as defined in claim 8 wherein the discharge valve uses packing and gas seals.

10. A fly ash silo blanking device as defined in claim 8 wherein the discharge valve is a star-type discharge valve.

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