CN205011034U - Strength slagging -off conveying system - Google Patents

Abstract

The utility model provides a novel strength slagging -off conveying system, includes excessive storehouse, fluidizer, air supplement unit and sediment storehouse, wherein, excessive storehouse includes feed inlet, storehouse end opening, manual flashboard door, air bleeding valve, fluidizer includes the feed valve, sends the ware, pipeline, air supplement unit includes control box, air admission subassembly, middle part intake pipe, bottom intake pipe, blowdown pipe, the sediment storehouse includes the termination rack. This application design science, it is rationally distributed, utilize fluidizer, air supplement unit's synergism, thoroughly solve prior art and sent the ware in the tonifying qi difficulty of carrying the granule charge level to face, improved the utilization efficiency of equipment greatly, effectively reduced equipment wear simultaneously, and few stifled pipe, avoided the constant maintenance.

Description

A pneumatic slag removal conveying system

technical field

The utility model belongs to the technical field of pneumatic conveying, in particular to a novel pneumatic slag removal conveying system.

Background technique

The pneumatic slag removal system of coal-fired units belongs to a pneumatic conveying process. The conventional conveying process is as follows: the bottom slag of the boiler enters the transition chamber after being crushed, and then further to the sender, and finally, the bottom slag falling into the sender is transported to the slag storage by means of pneumatic conveying.

At present, the pneumatic slag removal conveying system of coal-fired units is widely used in coal-fired power plants at home and abroad. However, the pneumatic slag removal system in the prior art is very immature, and there are many problems in practice, for example: first, the transportation stability is poor, manifested as frequent pipe blockage, and the equipment failure rate is high; second, the energy consumption is high, and the ash conveying The gas ratio is very low, most of which are difficult to reach 10, resulting in low cost performance for slag removal, and even less reliable than mechanical transportation; third, the equipment wears out quickly, and due to the high flow rate of the dilute direction, the pipe elbow will be broken shortly after the system is put into operation. There will be local wear-through phenomenon, which greatly increases the maintenance cost.

Utility model content

Aiming at the above-mentioned technical problems, the utility model provides a pneumatic slag removal conveying system. A transition bin is set up below the slag outlet to avoid the direct impact of the bottom slag on the transmitter and reduce material damage to the equipment. A manual brake is connected under the transition bin. Plate door, expansion joint, feed valve, the lower part is connected to the special sender for slag removal, the sender is equipped with feed valve, exhaust valve, fluidization device, conveying, air supply device, etc. The air ratio is very high, the energy consumption and equipment wear are low, the feeding is stable, and it does not need frequent maintenance.

In order to achieve the above object, the technical scheme of the utility model is as follows:

A pneumatic slag removal conveying system, comprising a transition bin (1), a fluidization device, an air supply device and a slag storehouse (15); wherein, the transition bin (1) includes a feed inlet (16), a bin lower port ( 17), manual shutter door (2), exhaust valve (14), described fluidization device comprises feed valve (18), sender (4), conveying pipeline (9); Described gas supply device comprises control box (6), air inlet assembly (7), middle air intake pipe (19), bottom air intake pipe (20), air supply pipe (8); the slag storehouse (15) includes a terminal box (10);

It is characterized in that: the feed port (16) of the transition bin (1) is connected to the slag outlet pipe, and the lower port (17) of the bin is sequentially connected with the manual gate (2) and the feed valve (18) from top to bottom. connection; the feed valve (18) is connected with the sender (4); the upper end of the sender is connected with the exhaust valve (14), which is convenient for replacing the air in time during blanking, so as to make the blanking more smooth; the bottom of the sender (4) is set There is a gasification chassis (5), through which the material can be fully fluidized and then enter the delivery pipeline (9), so that the material can run more smoothly in the delivery pipeline (9); the gas supply device The real-time control is realized through the control box (6), and the air inlet component (7) divides the compressed air for feeding into three paths, one path is the middle air intake pipe (19), which enters from the middle of the transmitter (4), and the other path is the bottom Air intake pipe (20), which enters from the bottom of transmitter (4), is an air supply pipe (8) all the way, which communicates with the compressed gas of the feed, and supplies air along the way for the delivery pipeline (9); the delivery pipeline (9 ) is connected with the slag storehouse (15).

Further, an expansion joint (3) is provided between the manual gate (2) and the feed valve (18) to absorb the thermal displacement generated by the high-temperature bottom slag.

Further, the transmitter (4) is provided with a first material level gauge (21), which can control the material falling into the bin pump each time, so as to realize the remote automatic control of the conveying procedure.

Further, the air supply pipe (8) supplies air along the delivery pipeline (9), and an air supply point is set at intervals on the delivery pipeline (9), extending all the way to the slag storage (15).

Further, the slag storehouse (15) is provided with a second material level gauge (12) and a continuous material level gauge (13), which can accurately control the materials falling into the slag storehouse.

Further, a bag dust collector (11) is installed on the top of the slag storehouse (15) to remove the flying dust flying into the slag storehouse, so as to realize the economy and environmental protection of the system.

The utility model has the advantages of:

(1) The bottom of the sender of the present application is provided with a gasification chassis, through which the material can be fully fluidized and then enter the conveying pipeline, thereby making the material run more smoothly in the conveying pipeline, effectively reducing equipment wear, and There is very little plugging, avoiding frequent maintenance.

(2) The gas supply device of the present application adopts three-way gas distribution, which completely solves the difficulty of gas supply faced by the transmitter in the prior art when conveying granular materials, and greatly improves the utilization efficiency of the equipment.

(3) This application implements intermittent air supply along the conveying pipeline, which effectively solves the problem of large particles and large specific gravity materials settling along the way. It has been greatly improved than before. Compared with the technical bottleneck of the early system, which was difficult to break through the 200-meter conveying distance, this application can achieve a conveying distance of no less than 1000 meters.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1 Transition chamber, 2 Manual shutter door, 3 Expansion joint, 4 Transmitter, 5 Gasification chassis, 6 Control box, 7 Air inlet component, 8 Air supply pipe, 9 Conveyor pipe, 10 Terminal box, 11 Bag dust removal device, 12 second material level gauge, 13 continuous material level gauge, 14 exhaust valve, 15 slag storage, 16 feed inlet, 17 warehouse lower port, 18 feed valve, 19 middle inlet pipe, 20 bottom inlet pipe, 21 The first level gauge.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

Referring to Fig. 1, the new pneumatic slag removal conveying system described in the present application includes a transition bin 1, a fluidization device, an air supply device and a slag storehouse 15; wherein, the transition bin 1 includes a feed port 16 and a bin lower port 17 , manual shutter door 2, exhaust valve 14, the fluidization device includes a feed valve 18, a sender 4, a delivery pipeline 9; , bottom air intake pipe 20, air supply pipe 8; the slag storehouse 15 includes a terminal box 10; the feed port 16 of the transition storehouse 1 is connected to the slag discharge port pipeline, and the storehouse lower port 17 is sequentially connected with the manual shutter door from top to bottom 2. The feed valve 18 is connected to the transmitter 4; the upper end of the transmitter is connected to the exhaust valve 14, which facilitates the timely replacement of air during blanking, thereby making the blanking smoother; the bottom of the transmitter 4 is provided with a gasification chassis 5, through which The gasification chassis 5 can make the material fully fluidized and then enter the conveying pipeline 9, so that the material can run more smoothly in the conveying pipeline 9; the air supply device realizes real-time control through the control box 6, and the air entering the component 7 will feed the The compressed air is divided into three paths, one path is the middle air intake pipe 19, which enters from the middle of the transmitter 4, the other path is the bottom intake pipe 20, which enters from the bottom of the transmitter 4, and the other path is the air supply pipe 8, which is connected to the feeder. Compress the gas and supply gas along the way for the delivery pipeline 9; the delivery pipeline 9 is connected with the slag storage 15.

There is an exhaust valve 14 on the transmitter 4, which can replace the air in the transmitter in time when it is convenient for blanking, so that the material can be unloaded more smoothly; in order to accurately control the material that falls into the warehouse pump each time, the transmitter 4 is equipped with The first material level gauge 21 is used to realize the remote automatic control of the conveying program. An expansion joint 3 is also provided between the manual gate 2 and the feed valve 18 to absorb the thermal displacement generated by the high-temperature bottom slag. Further, the air supply pipe 8 is used to supply air along the delivery pipeline 9, and an air supply point is set at intervals on the delivery pipeline 9, extending to the slag storage 15. This method effectively solves the problem of large particles and large specific gravity materials. The problem of settlement along the way has played the role of 4 liang of weight, and achieved a gray-air ratio of more than 20, and the transportation distance has been greatly improved compared with before. The slag storehouse (15) is provided with a second material level gauge (12) and a continuous material level gauge (13), which can precisely control the materials falling into the slag storehouse. In addition, a bag filter (11) is provided on the top of the slag storage (15) to remove the flying dust flying into the slag storage, so as to realize the economy and environmental protection of the system.

The design of this application is scientific, the layout is reasonable, and the synergistic effect of the fluidization device and the gas supply device is used to completely solve the difficulty of gas supply faced by the transmitter in the prior art when conveying granular materials, greatly improving the utilization efficiency of the equipment, and effectively reducing the The equipment is worn out, and the pipes are rarely blocked, which avoids frequent maintenance.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions describe only the principle of the utility model. There will be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope required by the utility model is defined by the appended claims and their equivalents.

Claims (6)

1. a pneumatic slag removing delivery system, comprises transition warehouse (1), fluidizer, making-up air device and slag storehouse (15); Wherein, described transition warehouse (1) comprises inlet point (16), storehouse end opening (17), manual lock gate hatch (2), blow off valve (14), and described fluidizer comprises inlet valve (18), transmitter (4), delivery duct (9); Described making-up air device comprises control box (6), air enters assembly (7), intermediate admission (19), bottom inflow pipe (20), blowdown pipe (8); Described slag storehouse (15) comprises termination rack (10);

It is characterized in that: described transition warehouse (1) inlet point (16) is connected with the cinder notch pipeline that falls, storehouse end opening (17) is connected with manual lock gate hatch (2), inlet valve (18) from top to bottom successively; Inlet valve (18) is connected with transmitter (4); Transmitter upper end is connected with blow off valve (14), timely displaced air when facilitating blanking, thus makes blanking more smooth and easy; Transmitter (4) bottom is provided with gasification chassis (5), enter delivery duct (9) after can making the abundant fluidisation of material by this gasification chassis (5), thus make the operation of material in delivery duct (9) more smooth; Described making-up air device realizes controlling in real time by control box (6), air enters assembly (7) and the pressurized air of charging is divided into three tunnels, one tunnel is intermediate admission (19), it enters from the middle part of transmitter (4), one tunnel is bottom inflow pipe (20), it enters from the bottom of transmitter (4), one tunnel is blowdown pipe (8), the pressure gas of its UNICOM's charging, and be delivery duct (9) tonifying Qi on the way; Described delivery duct (9) is connected with slag storehouse (15).

2. pneumatic slag removing delivery system according to claim 1, is characterized in that: be also provided with expansion joint (3) between described manual lock gate hatch (2) and inlet valve (18), the thermal walking that Absorbable rod high temperature bottom slag produces.

3. pneumatic slag removing delivery system according to claim 1, it is characterized in that: described transmitter (4) is provided with the first level-sensing device (21), can control the material that each blanking falls into storehouse pump, thus the remote automation realizing conveying program controls.

4. pneumatic slag removing delivery system according to claim 1, it is characterized in that: described blowdown pipe (8) is delivery duct (9) tonifying Qi on the way, delivery duct (9) arranges a tonifying Qi point every a segment distance, extends to slag storehouse (15) always.

5. pneumatic slag removing delivery system according to claim 1, is characterized in that: described slag storehouse (15) is provided with the second level-sensing device (12) and continuous material level meter (13), accurately can control the material falling into slag storehouse.

6. pneumatic slag removing delivery system according to claim 1, is characterized in that: described slag storehouse (15) top is provided with bag dust collector (11), can effectively remove the airborne dust flying into slag storehouse.