Automatic exhaust device for centralized ash bin of bag type dust collector

Abstract

The utility model relates to the technical field of automatic exhaust of a closed ash bin of a bag type dust collector of a steelmaking converter, in particular to an automatic exhaust device of a centralized ash bin of a bag type dust collector. Comprising a dust remover, a dust bin, a negative pressure communicating pipe and an automatic control valve, a dust hopper is arranged at the bottom of the dust remover and connected with the dust bin through a dust falling pipe, the top of the dust bin is connected with the dust remover through the negative pressure communicating pipe, a fan is arranged in the dust remover, the dust hopper is arranged at the bottom of the dust remover, and a dust conveying bin pump is arranged at the bottom of the dust hopper and blows dust into the dust bin for sedimentation. A pneumatic switch is arranged outside the ash conveying bin pump, the bottom of the ash bin is connected with a dust remover through an ash falling pipe, a negative-pressure communicating pipe is additionally arranged after the top of the ash bin is sealed, one end of the negative-pressure communicating pipe is in sealed connection with the top of the ash bin, and the other end of the negative-pressure communicating pipe is connected into the dust remover; according to the automatic exhaust device for the centralized ash bin of the bag type dust collector, the maintenance cost is reduced, power consumption and frequent inspection are not needed, and the labor intensity of workers is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the automatic exhaust technology field of the closed ash bin of the bag type dust collector of the converter, and particularly relates to a bag type dust collector centralized ash bin automatic exhaust device. BACKGROUND

[0002] The bag type dust collector of the converter is the key core equipment of the secondary and tertiary dust removal of the converter, is mainly responsible for collecting the overflow smoke dust of the converter at the smelting period of the furnace mouth position and the smoke dust generated during the converter iron mixing period and recycling, the gas purification mode of the low-pressure pulse bag type dust collector is external filtration, the dust-containing gas enters each unit filter chamber from the flow guide pipe, due to the sufficient and reasonable airflow passing through the appropriate flow guide and the natural flow distribution in the design of the filter bag bottom to the upper air inlet, the air distribution in the whole filter chamber is uniform, the particles in the dust-containing gas are directly dropped into the ash bucket after natural sedimentation separation, the remaining dust is guided into the middle box filter area along with the airflow under the guidance of the flow guide system, is adsorbed on the outer surface of the filter bag, and the filtered clean gas is discharged through the filter bag, the upper box body and the exhaust pipe, so that the stable operation of the dust collector can guarantee the normal smelting of the converter, and the most key is that a large amount of dust removal ash generated by the dust collector is punched into the centralized ash bin through the full-closed pneumatic ash conveying device, although the ash conveying system device is more efficient and environmentally friendly than the traditional scraper machine ash conveying device, but the closed ash conveying device will generate a large amount of gas when conveying ash to the centralized ash bin, and the system mainly has the following problems in the ash conveying process:

[0003] (1) A large amount of compressed air and dust enters the centralized ash bin during the ash conveying operation to the centralized ash bin, and the single-point dust collector at the top of the centralized ash bin needs to be opened for exhaust.

[0004] (2) The single-point dust collector is a 2.5kW / h induced draft fan as the air volume power source, and the power consumption is large.

[0005] (3) The price of the single-point dust collector equipment is 100,000 yuan.

[0006] (4) The single-point dust collector needs to be regularly checked for internal filter bags every month, which increases the labor intensity of the personnel.

[0007] (5) The dust removal cloth bag needs to be replaced every 3 months, and the replacement of the cloth bag produces dust, the single-point dust collector has 64 cloth bags, the unit price of each cloth bag is about 50 yuan, the replacement of the cloth bag is about 3000 yuan, and the maintenance cost is large.

[0008] Therefore, it is urgent to design a bag type dust collector centralized ash bin automatic exhaust device to solve the problems of high use and maintenance cost, large power consumption and high labor intensity of frequent inspection of the existing technology. UTILITY MODEL CONTENTS

[0009] The utility model discloses a bag type dust collector centralized ash bin automatic exhaust device aiming at the problems in the prior art.

[0010] The utility model discloses a bag type dust collector centralized ash bin automatic exhaust device adopts the technical scheme that solves its technical problem: a bag type dust collector centralized ash bin automatic exhaust device, including dust remover, ash bin, negative pressure communication pipe and automatic control valve, and the dust remover bottom is equipped with the hopper, and the hopper is connected with the ash bin through the ash pipe, and the ash bin top is connected with the dust remover through the negative pressure communication pipe.

[0011] Specifically, the dust remover is internally provided with a fan, the dust remover bottom is provided with a hopper, and the hopper bottom is provided with an ash conveying pump.

[0012] Specifically, the ash conveying pump blows dust into the ash bin to settle, and the ash conveying pump is externally provided with a pneumatic switch.

[0013] Specifically, the ash bin bottom is connected with the dust remover through the ash pipe, and the ash bin top is provided with the negative pressure communication pipe after being sealed.

[0014] Specifically, one end of the negative pressure communication pipe is sealingly connected with the ash bin top, and the other end of the negative pressure communication pipe is connected into the dust remover interior.

[0015] Specifically, the automatic control valve is arranged in the middle of the negative pressure communication pipe, the automatic control valve is welded with the negative pressure communication pipe through two flanges, the automatic control valve middle is provided with a turnover plate, the turnover plate one side bottom is provided with a counterweight, and the turnover plate other side top is connected with the ash conveying pump pneumatic switch through a steel wire rope.

[0016] The utility model has the following beneficial effects:

[0017] The bag type dust collector centralized ash bin automatic exhaust device designed by the utility model has the following advantages: maintenance-free design: canceling filter cloth bag and induced draft fan, completely avoiding replacement and dust problem; full mechanical linkage: realizing accurate synchronization of ash conveying and exhaust through the steel wire rope and gravity flap valve; low cost: simple structure, and all components are conventional industrial materials (such as carbon steel), and the installation and transformation cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of bag type dust collector centralized ash bin automatic exhaust device.

[0019] In the drawing: 1-dust remover, 1.1-hopper, 1.2-ash conveying pump, 1.3-pneumatic switch; 2-ash bin, 2.1-ash pipe; 3-negative pressure communication pipe; 4-automatic control valve, 4.1-turnover plate, 4.2-counterweight, 4.3-steel wire rope. DETAILED DESCRIPTION

[0020] The technical solutions of the present utility model will be described in further detail below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] like Figure 1 As shown, an automatic exhaust device for a centralized ash hopper of a bag filter includes a dust collector 1, an ash hopper 2, a negative pressure connecting pipe 3, and an automatic control valve 4. The bottom of the dust collector 1 is provided with an ash hopper 1.1, which is connected to the ash hopper 2 through an ash discharge pipe 2.1. The top of the ash hopper 2 is connected to the dust collector 1 through the negative pressure connecting pipe 3.

[0022] Dust collector 1 is a bag filter 1. The dust collector 1 has a fan at the top inside and a filter cloth inside. The dust collector 1 is used to suck the dust into the ash hopper 1.1. The ash hopper 1.1 is located at the bottom of the dust collector 1.1. The ash hopper 1.1 has a suction port on one side. The ash hopper 1.1 is used to store the dust. The bottom of the ash hopper 1.1 is equipped with an ash conveying pump 1.2. The outside of the ash conveying pump 1.2 is equipped with a pneumatic switch 1.3. The ash conveying pump 1.2 is used to blow the dust into the ash hopper 2.

[0023] The bottom of the ash silo 2 is connected to the ash conveying pump 1.2 via the ash discharge pipe 2.1. The top of the ash silo 2 is sealed after the removal of the single-point dust collector 1. After the top of the ash silo 2 is sealed, it is directly connected to the dust collector 1 via the negative pressure connecting pipe 3. The dust collector 1 itself is in a negative pressure state. Utilizing the negative pressure state of the dust collector 1, the ash silo 2 settles the dust at the bottom and discharges the air directly into the dust collector 1 through the negative pressure connecting pipe 3 and out of the dust collector 1.

[0024] The negative pressure connecting pipe 3 is used to connect the ash silo 2 and the dust collector 1. Both ends of the negative pressure connecting pipe 3 are sealed. An automatic control valve 4 is provided in the middle of the negative pressure connecting pipe 3.

[0025] The automatic control valve 4 is welded to the middle of the negative pressure connecting pipe 3 via two flanges. Inside the automatic control valve 4 is a tilting plate 4.1. A counterweight 4.2 is located at the bottom of one side of the tilting plate 4.1, and a wire rope 4.3 is located at the top of the other side of the tilting plate 4.1. One end of the wire rope 4.3 is connected to the tilting plate 4.1, and the other end of the wire rope 4.3 is connected to the pneumatic switch 1.3 of the ash conveying silo pump 1.2. When conveying ash, the pneumatic switch 1.3 opens the ash conveying silo pump 1.2, which drives the tilting plate 4.1 to tilt, thus opening the automatic control valve 4. The negative pressure connecting pipe 3 discharges the air in the ash silo 2 into the dust collector 1. After the ash conveying is completed, the pneumatic switch 1.3 closes, and the counterweight 4.2 drives the tilting plate 4.1 to fall naturally, closing the automatic control valve 4. The air in the negative pressure connecting pipe 3 is no longer circulating, thus achieving the purpose of automatic exhaust of the centralized ash silo 2 by the bag filter 1.

[0026] The utility model is not limited to the above-mentioned embodiment, any person should know the structure change made under the inspiration of the utility model, any technical scheme with the same or similar to the utility model falls into the protection scope of the utility model.

[0027] The technical, shape, and structure parts not described in detail in the utility model are all known technologies.

[0028] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0029] Although the embodiments of the utility model have been shown and described, it is understood that changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A bag-type dust collector centralized ash bin automatic exhaust device, characterized in that, The dust collector is internally provided with a fan, the bottom of the dust collector is provided with a dust hopper, and the bottom of the dust hopper is provided with a dust hopper pump.

2. The automatic exhaust device of the centralized ash bin of the bag-type dust collector according to claim 1, characterized in that, The dust collector is internally provided with a fan, the bottom of the dust collector is provided with a dust hopper, and the bottom of the dust hopper is provided with a dust hopper pump.

3. The automatic exhaust device of the centralized ash bin of the bag-type dust collector according to claim 2, characterized in that, The dust hopper pump is externally provided with a pneumatic switch.

4. The automatic exhaust device of the centralized ash bin of a bag-type dust collector according to claim 1, characterized in that, The dust hopper is connected with the dust collector through a dust falling pipe, and a negative pressure connecting pipe is additionally arranged on the top of the dust hopper after sealing.

5. The automatic exhaust device of the centralized ash bin of the bag-type dust collector according to claim 1, characterized in that, One end of the negative pressure connecting pipe is sealingly connected with the top of the dust hopper, and the other end of the negative pressure connecting pipe is connected with the inside of the dust collector.

6. The automatic exhaust device of a bag-type dust collector centralized ash bin according to claim 1, characterized in that, The automatic control valve is arranged in the middle of the negative pressure connecting pipe, the automatic control valve is welded with the negative pressure connecting pipe through two flanges, a turnover plate is arranged in the middle of the automatic control valve, a counterweight is arranged at the bottom of one side of the turnover plate, and a steel wire rope is connected between the top of the other side of the turnover plate and the pneumatic switch of the dust hopper pump.

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