Anti-blocking cleaning device for V-shaped area of dust remover

Abstract

The utility model discloses an anti-blocking cleaning device for a V-shaped area of a dust remover, which belongs to the technical field of dust removal equipment and comprises the dust remover and a V-shaped ash bucket, the V-shaped ash bucket is arranged at a discharge port at the bottom of the dust remover, nozzles are respectively arranged at the tops of two sides of the V-shaped ash bucket, and three nozzles are distributed inside each side of the V-shaped ash bucket along the longitudinal direction. A branch pipeline is arranged at the bottom of each nozzle, an electromagnetic valve is arranged on each branch pipeline, all the branch pipelines are converged to a main pipeline, and the main pipeline is connected with an air cannon. According to the utility model, the problem of blockage of the V-shaped ash hopper is solved, the probability of manual ash removal accidents is reduced, non-stop events are reduced, the risks of corrosion and collapse of equipment are reduced, and dust type occupational health hazards are reduced; and meanwhile, the escape of fly ash leakage instruments in the blockage and ash removal process is reduced, and a guarantee is provided for up-to-standard emission.

Description

Technical Field

[0001] The utility model relates to a dust collector cleaning device, in particular to an anti-blocking and cleaning device for the V-shaped area of a dust collector, belonging to the technical field of dust removal equipment. Background Technique

[0002] With the development of domestic waste incineration technology, waste incineration power generation has become the mainstream trend of comprehensive utilization of waste. The emissions of flue gas pollutants in the waste incineration power generation industry are becoming more and more strict, and the corresponding input amount of pollutants removal auxiliary materials is increasing; the particles in the flue gas after waste incineration increase sharply, and the particulate matter in the flue gas also increases synchronously after semi-dry and dry desulfurization. Because the particulate matter has obvious adhesiveness, it is extremely easy to settle and harden in the V-shaped area of the dust collector, blocking the flue gas channel, resulting in an increase in the current of the induced draft fan. In severe cases, it will cause the waste incinerator to stop operating, and in more severe cases, it will cause the dust collector to collapse due to overweight, resulting in huge losses; in view of the above situation, at present, the V-shaped area is cleaned by the method of manual blowing with compressed air. This method will invest a large amount of manpower, not only increasing the construction cost, but also prolonging the construction period. When cleaning the ash, when a large amount of high-temperature fly ash accumulates in the upper part, there will be a sudden surge and sliding collapse of the fly ash, resulting in accidents such as scalding of personnel and collapse and burial; at the same time, when the manhole door is opened for a long time, a large amount of cold air enters the air and flue gas system, resulting in the condensation of acid-containing flue gas, severely corroding the entire system, and increasing the cleaning difficulty. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, provide an anti-blocking and cleaning device for the V-shaped area of a dust collector, reduce the continuous entry of a large amount of cold air, reduce the corrosion of the dust collector, avoid the collapse of the dust collector, and ensure the safety of construction.

[0004] The technical solution adopted by the utility model to solve the technical problem is:

[0005] An anti-blocking and cleaning device for the V-shaped area of a dust collector includes a dust collector and a V-shaped ash hopper. A V-shaped ash hopper is arranged at the discharge port at the bottom of the dust collector. Nozzles are respectively arranged on both sides inside the V-shaped ash hopper, and three nozzles are longitudinally distributed in each side of the V-shaped ash hopper. Branch pipelines are respectively arranged at the bottom of each nozzle, electromagnetic valves are arranged on the branch pipelines, all the branch pipelines converge at the main pipeline, and the main pipeline is connected to an air cannon.

[0006] A pressure gauge and a pulse valve are arranged on the air cannon, and a bracket is arranged at the bottom of the air cannon.

[0007] The nozzle is made of stainless steel material.

[0008] The nozzle is composed of a fan-shaped elbow end and a flat nozzle end. The fan-shaped elbow end is connected to the flat nozzle end, and the end of the fan-shaped elbow end penetrates through the V-shaped ash hopper and is connected to the branch pipeline.

[0009] The opening angle of the nozzle is 30° - 60°.

[0010] The distance between the bottom plane of the nozzle and the inner wall of the V-shaped ash hopper is 1 cm.

[0011] The positive and beneficial effects of the present utility model are as follows:

[0012] 1. By respectively arranging three nozzles on both sides of the top of the V-shaped ash hopper in the present utility model and cooperating with the use of air cannons, starting from the source of the ash hopper, the initially flying ash that has settled and adhered is impacted and re-risen, and the flying ash is carried to the downstream by the flue gas, thereby achieving the effect of preventing blockage.

[0013] 2. The present utility model solves the problem of blockage of the V-shaped ash hopper, reduces the probability of manual ash cleaning accidents, reduces non-stop events, reduces the risk of equipment corrosion and collapse, and reduces the occupational health hazards of dust; at the same time, it reduces the escape of flying ash during the blockage cleaning process, providing guarantee for up-to-standard emission. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is the connection schematic diagram of the branch pipeline and the main pipeline of the present utility model;

[0016] Figure 3 is the connection distribution diagram of the present utility model;

[0017] Figure 4 is the structural schematic diagram of the nozzle of the present utility model;

[0018] Figure 5 is Figure 4 the top view of;

[0019] Wherein: 1 - dust collector, 2 - V-shaped ash hopper, 3 - nozzle, 4 - branch pipeline, 5 - solenoid valve, 6 - main pipeline, 7 - air cannon, 8 - support. Specific Embodiments

[0020] The following further explains and illustrates the present utility model in conjunction with the drawings:

[0021] Embodiment, see Figures 1-5, a dust collector V-shaped area anti-blocking and cleaning device, including a dust collector 1 and a V-shaped ash hopper 2. A V-shaped ash hopper 2 is arranged at the discharge port at the bottom of the dust collector 1. Nozzles 3 are respectively arranged at the tops on both sides of the V-shaped ash hopper 2, and three nozzles 3 are distributed longitudinally inside each side of the V-shaped ash hopper 2. A branch pipeline 4 is respectively arranged at the bottom of each nozzle 3, and a solenoid valve 5 is arranged on the branch pipeline 4. All the branch pipelines 4 converge at the main pipeline 6, and the main pipeline 6 is connected to an air cannon 7.

[0022] A pressure gauge and a pulse valve are arranged on the air cannon 7, and a bracket 8 is arranged at the bottom of the air cannon 7.

[0023] The nozzle 3 is made of stainless steel material.

[0024] The nozzle 3 is composed of a fan-shaped elbow end 301 and a flat nozzle end 301. The fan-shaped elbow end 301 is connected to the flat nozzle end 301. The end of the fan-shaped elbow end 301 penetrates through the V-shaped ash hopper 2 and is connected to the branch pipeline 4.

[0025] The opening angle of the nozzle 3 is 30° - 60°.

[0026] The distance between the bottom plane of the nozzle 3 and the inner wall of the V-shaped ash hopper 2 is 1 cm.

[0027] In the above description, during installation, a DN50 hole is longitudinally arranged 10 cm downward from the inverted V vertex in the V-shaped area of the dust collector. Generally, the number of openings (the number of nozzles installed) is determined according to the actual width of the V-shaped area slope. One hole is opened every 30 - 35 cm. Along the longitudinal direction, sector nozzles are arranged along the bottom plate in the downstream direction for each hole. The nozzles use three-channel sector flat nozzles (the total nozzle opening angle is between 30° and 60°, generally calculated according to the slope length, mainly considering the coverage area and the range). In principle, the flat opening width is not less than 3.6 cm to prevent blockage. The sector nozzles are connected to at least a 90° elbow of DN50 and pass through the bottom plate. The inside and outside are fully welded at the place where the V-shaped area bottom plate is penetrated. A DN50 pipe is connected after the elbow. For each nozzle, the principle of proximity is adopted, and the electromagnetic ball valve or pneumatic ball valve is installed as close to the bottom plate as possible. In principle, the inner diameter of the valve is the same as that of the pipe. The valves are uniformly collected to a main pipe and connected to the air cannon outlet. In principle, the larger the air cannon, the more nozzles are connected. The reason is to avoid excessive compressed air intercepted by the nozzle pipes that do not work during each blow. The more nozzles are connected, the stronger the interception ability, which may cause insufficient air cannon capacity and needs to be confirmed after calculation. A set of pulse controllers is installed. The controller circuit is required to satisfy at least the number of nozzles + the number of air cannon pulse valves, and has functions of adjusting the pulse action time, pulse interval, and pulse cycle interval. When the solenoid valve of a certain nozzle is powered on and actuated, it remains in the powered-on state (the duration can be adjusted by the pulse controller) and opens. The circuit is connected to the air breaker. After the valve is opened and the signal is in place, it is equivalent to the formation of a path. The air cannon solenoid valve is powered on and actuated to work, completing the pulse soot blowing for the corresponding area of this nozzle. After the action is completed, the pulse controller times and enters the next circuit to start the corresponding next blow, one by one. Among them, the power supply of the paths after all the valves corresponding to the nozzles are opened needs to be incorporated into a bus bar to connect the common air cannon pulse valves.

[0028] The utility model solves the problem of blockage in the V-shaped ash hopper, reduces the probability of manual soot cleaning accidents, reduces non-stop events, reduces the risk of equipment corrosion and collapse, and reduces the occupational health hazards of dust; at the same time, it reduces the escape of fly ash from the fly ash leakage meter during the blockage soot cleaning process and provides a guarantee for reaching the discharge standard.

Claims

1. A dust collector V-shaped area anti-blocking and cleaning device, comprising a dust collector (1) and a V-shaped ash hopper (2), characterized in that: At the discharge port at the bottom of the dust collector (1), a V-shaped ash hopper (2) is provided. At the tops of both sides of the V-shaped ash hopper (2), nozzles (3) are respectively provided. And three nozzles (3) are distributed longitudinally inside each side of the V-shaped ash hopper (2). At the bottom of each nozzle (3), a branch pipeline (4) is respectively provided. An electromagnetic valve (5) is provided on the branch pipeline (4). All the branch pipelines (4) converge at the main pipeline (6). The main pipeline (6) is connected to an air cannon (7).

2. The anti-blocking and cleaning device for the V-shaped area of a dust collector according to claim 1, characterized in that: A pressure gauge and a pulse valve are provided on the air cannon (7). A bracket (8) is provided at the bottom of the air cannon (7).

3. The anti-blocking and cleaning device for the V-shaped area of a dust collector according to claim 1, characterized in that: The nozzle (3) is made of stainless steel material.

4. The anti-blocking and cleaning device for the V-shaped area of a dust collector according to claim 3, characterized in that: The nozzle (3) is composed of a fan-shaped elbow end (301) and a flat nozzle end (302). The fan-shaped elbow end (301) is connected to the flat nozzle end (302). The end of the fan-shaped elbow end (301) penetrates through the V-shaped ash hopper (2) and is connected to the branch pipeline (4).

5. The anti-clogging and cleaning device for the V-shaped area of a dust collector according to claim 3, wherein: The opening angle of the nozzle (3) is 30° - 60°.

6. The anti-blocking and cleaning device for the V-shaped area of a dust collector according to claim 1, wherein: The distance between the bottom of the nozzle (3) and the inner wall of the V-shaped ash hopper (2) is 1 cm.

Images