CN214861951U - Air inlet flow guide pipe fluidizing device of bag type dust collector - Google Patents

Abstract

The utility model provides an air inlet flow guide pipe fluidization device of a bag type dust collector, belonging to the technical field of bag type dust collectors; the device aims to solve the problems of dust sedimentation and accumulation in a diversion bend pipe and an oblique straight pipe in the low-load operation process of a bag type dust collector; the technical scheme is that the fluidizing device comprises an air inlet pipe, one end of the air inlet pipe is connected with a compressed air storage tank, the other end of the air inlet pipe is communicated with a first-stage branch pipe, a short section is arranged on the air inlet pipe, the short section and the air inlet pipe are detachably connected together through a flange, an electromagnetic pulse valve is arranged on the short section, one end of the first-stage branch pipe is communicated with a plurality of second-stage branch pipes, one ends, far away from the first-stage branch pipe, of the second-stage branch pipes are provided with horn-shaped diffusion openings, the diffusion openings are used for being connected with a diversion bent pipe in an air inlet diversion pipe, and the large opening ends of the diffusion openings face the diversion bent pipe; the dust removing device has the advantages of simple and practical structure, reliable operation of equipment, time saving and labor saving, and dust removing effect.

Description

Air inlet flow guide pipe fluidizing device of bag type dust collector

Technical Field

The utility model belongs to the technical field of the bag collector, specifically be a bag collector honeycomb duct fluidizer that admits air.

Background

The bag type dust collector is a dry type dust filtering device, is used for collecting non-fibrous industrial dust with fine particle size, and is mainly applied to industries such as steel, building materials, electric power and the like. Has the advantages of high filtering efficiency, stable performance, easy dust recovery and the like. The device comprises a leg part, an ash bucket part, a box body part, a top cover part, a back-blowing ash removal device, an air inlet smoke box, an air exhaust smoke box, an air inlet guide pipe, an air inlet valve, an air outlet valve, an inclined ladder overhaul platform and the like.

The working principle of the bag type dust collector is as follows: the dust-containing flue gas is uniformly distributed into each ash hopper through the air inlet guide pipe after being expanded by the air inlet smoke box, and then slowly rises to the corresponding filter chamber, and because the sectional area of the air flow is suddenly enlarged, the flow speed is reduced, and dust particles with larger particle sizes are settled into the ash collecting hopper under the action of gravity. The dust particles with smaller particle size pass through the outer surface of the filter bag and are intercepted on the outer surface of the filter bag to form a dust cake layer under the comprehensive actions of inertia collision, screening, electrostatic attraction, hook attachment effect and the like. The purified clean gas enters the air purifying chamber through the interior of the filter bag and is discharged by the exhaust smoke box. Along with the continuous filtration, the filtration differential pressure of the filter bag gradually rises, and when the filtration differential pressure reaches a set value, a pulse ash removal program is started to remove the deposited ash cake layer and fall into an ash hopper.

The main functions of the air inlet guide pipe comprise: (1) the flue gas in the inlet flue box is evenly distributed to the ash hoppers, and the load of each filter chamber is ensured to be consistent. (2) Under the design operating mode, keep the flue gas velocity of flow of the flue gas of inlet flue box entry equal with the flue gas velocity of flow of ash bucket air inlet for the dust particle that carries in the flue gas is whole to get into the ash bucket, the phenomenon that the dust subsides in the honeycomb duct can not appear.

The air inlet flow guide pipe comprises a square taper pipe, a rectangular straight pipe, a flow guide bent pipe and an oblique opening straight pipe which are arranged in sequence. The smoke uniformly enters the ash bucket from the air inlet smoke box according to the route of the square conical pipe → the rectangular straight pipe → the diversion bent pipe → the oblique opening straight pipe. The phenomenon that dust subsides is easily produced to the honeycomb duct that admits air in long-term operation in-process, the leading reason is as follows:

under the design condition, the flue gas in the air inlet flow guide pipe keeps a high flow velocity, so that dust particles carried by the flue gas completely enter the ash bucket, and the phenomenon that dust is settled in the flow guide pipe can not occur. However, in the long-term operation process of the bag type dust collector, the load change of the household garbage incineration boiler affects the treated flue gas quantity to be continuously changed between 30% and 100% of the rated flue gas quantity, the flue gas quantity is reduced under the low-load working condition, the flow rate is too low, and the phenomena of dust settlement and accumulation occur in the diversion bent pipe and the bevel straight pipe, so that the area of the air inlet of the ash bucket is reduced, and the operation resistance of the bag type dust collector is increased.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides a bag collector honeycomb duct fluidizer that admits air, and the dust subsides, accumulational phenomenon in the water conservancy diversion return bend and the bevel connection straight tube of the purpose solution bag collector low-load operation in-process.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

The utility model provides a bag collector honeycomb duct fluidizer that admits air, includes the intake pipe, the one end of intake pipe is connected with the compressed air storage tank, and the other end intercommunication is provided with the one-level branch pipe, be provided with the nipple joint in the intake pipe, the nipple joint with the intake pipe can dismantle through the flange and link together, be provided with the electromagnetic pulse valve on the nipple joint, the one end intercommunication of one-level branch pipe is provided with a plurality of second grade branch pipes, the second grade branch pipe is kept away from the one end of one-level branch pipe is provided with tubaeform diffusion mouth, the diffusion mouth be used for with water conservancy diversion return bend in the honeycomb duct that admits air is connected, diffusion mouth's macrostoma towards water conservancy diversion return bend.

Further, the air inlet pipe is provided with a plurality of air inlet pipes.

Further, the pipe nipple with all be provided with the flange on the intake pipe, two the flange is connected through the bolt, and two be provided with sealed the pad between the flange.

Furthermore, both ends of the first-stage branch pipe are communicated with a plurality of second-stage branch pipes.

The utility model discloses produced beneficial effect for prior art does: (1) the utility model has simple and practical structure, low cost and good use effect, and ensures the reliable operation of the equipment; (2) through setting up the electromagnetic pulse valve, labour saving and time saving has not only guaranteed the effect of cleaing away the dust moreover.

Drawings

The present invention will be further explained with reference to the accompanying drawings;

FIG. 1 is a front view of a fluidizing apparatus according to the present invention;

FIG. 2 is a top view of the fluidization device of the present invention;

wherein, 1 is the intake pipe, 2 is the flange, 3 is the nipple joint, 4 is the electromagnetic pulse valve, 5 is the bolt, 6 is sealed the pad, 7 is the one-level branch pipe, 8 is the second grade branch pipe, 9 is the diffusion mouth, 10 is the compressed air storage tank.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clear, the present invention is further described in detail with reference to the accompanying embodiments and drawings, it should be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

As shown in figure 1-2, the air inlet flow guide pipe fluidizing device of the bag type dust collector comprises an air inlet pipe 1, flanges 2, short sections 3, an electromagnetic pulse valve 4, a first-stage branch pipe 7, a second-stage branch pipe 8, a diffusion port 9, a fastening bolt 5 and a sealing gasket 6, wherein the short sections 3 are arranged on the air inlet pipe 1, the flanges 2 are arranged at the upper end and the lower end of each short section 3, the flanges 2 are arranged at the end part of the air inlet pipe 1, the flanges 2 on the air inlet pipe 1 are connected with the flanges 2 on the short sections 3 through the bolts 5, the sealing gasket 6 is arranged between the flanges 2 on the air inlet pipe 1 and the flanges 2 on the short sections 3, the electromagnetic pulse valve 4 is arranged on the short sections 3, the control end of the electromagnetic pulse valve 4 is electrically connected with a DCS system of a boiler, the lower end of the air inlet pipe 1 is connected with a compressed air storage tank 10, the upper end of the air inlet pipe 1 is communicated with the first-stage branch pipe 7, the first-stage branch pipe 7 is vertical to the pipeline of the air inlet pipe 1, two ends of the first-stage branch pipe 7 are communicated with two second-stage branch pipes 8, and one ends, far away from the first-stage branch pipe 7, of the second-stage branch pipes 8 are provided with horn-shaped diffusion openings 9.

The air inlet flow guide pipe comprises a square conical pipe, a rectangular straight pipe, a flow guide bent pipe and an oblique opening straight pipe which are sequentially arranged, smoke uniformly enters an ash bucket from an air inlet smoke box according to the route of the square conical pipe → the rectangular straight pipe → the flow guide bent pipe → the oblique opening straight pipe, two diffusion openings 9 which are positioned on the same side of the air inlet pipe 1 are connected with the same flow guide bent pipe in the air inlet flow guide pipe, the large opening end of each diffusion opening 9 faces the flow guide bent pipe, and the boiler is automatically controlled by a DCS (distributed control system).

The working process is that when the boiler is in a low-load operation state, the DCS automatically triggers the electromagnetic pulse valve 4 once every 30min, the pulse width is 2S, compressed air reaches the first-stage branch pipe 7 and the second-stage branch pipe 8 from the air inlet pipe 1 and then is sprayed into the rear part of the diversion elbow pipe through the diffusion port 9 at an accelerated speed, and dust which is settled and accumulated in the diversion elbow pipe and the bevel-mouth straight pipe is completely blown into an air inlet of the ash hopper, so that the air inlet diversion pipe of the dust remover is recovered smoothly, and the operation resistance of the equipment returns to a normal level.

The utility model has simple and practical structure, not only realizes the design intention and reduces the construction cost, but also has better use effect and ensures the reliable operation of the equipment; through setting up electromagnetic pulse valve 4, combine the DCS system of boiler, realized automatic control, not only labour saving and time saving, guaranteed the effect of cleaing away the dust, improved the manufacturability of system moreover, increased the reliability of operation.

The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.

Claims (4)

1. The utility model provides a bag collector honeycomb duct fluidizer that admits air, a serial communication port, including the intake pipe, the one end of intake pipe is connected with the compressed air storage tank, and the other end intercommunication is provided with the one-level branch pipe, be provided with the nipple joint in the intake pipe, the nipple joint with the intake pipe can be dismantled the connection together through the flange, be provided with the electromagnetic pulse valve on the nipple joint, the one end intercommunication of one-level branch pipe is provided with a plurality of second grade branch pipes, the second grade branch pipe is kept away from the one end of one-level branch pipe is provided with tubaeform diffusion mouth, the diffusion mouth be used for with water conservancy diversion return bend in the honeycomb duct that admits air is connected, diffusion mouth's macrostoma end orientation water conservancy diversion return bend.

2. The fluidization device according to claim 1, wherein said air inlet pipe is provided in plurality.

3. The fluidization device of the air inlet flow guide pipe of the bag type dust collector as claimed in claim 1, wherein the short section and the air inlet pipe are provided with flanges, the two flanges are connected through a bolt, and a sealing gasket is arranged between the two flanges.

4. The fluidization device for the air inlet flow guide pipe of the bag type dust collector as claimed in claim 1, wherein a plurality of secondary branch pipes are arranged at both ends of the primary branch pipe in a communication manner.

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