CN219072428U

CN219072428U - Sealed ash discharging system of bag type dust collector

Info

Publication number: CN219072428U
Application number: CN202223556640.XU
Authority: CN
Inventors: 郭月梅; 刘旭; 潘玉泉; 王岩; 张刚; 徐安; 刘嘉豪; 张晓辉; 胡晓龙; 冉劲松
Original assignee: Luoyang Green Environmental Protection Engineering Co ltd
Current assignee: Luoyang Green Environmental Protection Engineering Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-26
Anticipated expiration: 2032-12-30

Abstract

A sealed ash discharging system of a bag type dust collector comprises a conical ash bin, wherein the conical ash bin is in a conical bin section with a wide upper part and a narrow lower part; the side of the conical ash bin is provided with an explosion-proof bin wall vibrator and a temperature detector, the periphery of the conical ash bin is wound with a steam heating pipe, and the conical ash bin is provided with a high level gauge and a low level gauge; the lower end of the conical ash bin is connected with an intermediate bin positioned below the conical ash bin through a pipeline, and a sealing valve device is arranged on the pipeline; the middle bin is a cylindrical tank body with a round top cover, and the lower end of the cylindrical tank body is connected with the upper large end of a conical ash bucket; the outer side of the intermediate bin is provided with an explosion-proof bin wall vibrator and a temperature detector, the periphery of the intermediate bin is wound with a steam heating pipe, and the intermediate bin is provided with a high material level gauge and a low material level gauge; the lowest end of the intermediate bin is provided with a discharger device. The sealed ash discharging system has the advantages of effectively preventing dangerous gas from leaking, being high in dust removing efficiency, safe and stable, and effectively avoiding ash and dust emission.

Description

Sealed ash discharging system of bag type dust collector

Technical Field

The utility model belongs to the technical field of dangerous gas dust removal, and particularly relates to a sealed ash discharging system of a bag type dust remover.

Background

The bag type dust collector is used for purifying dangerous gases such as crude gas and the like generated in the production process including blast furnace ironmaking, coal industry and the like so as to reduce the pollutant content of the discharged dangerous gases, and the dust collection process has explosion risks if leakage occurs or air is not tightly sealed, so that the dust collection process is air-in.

Traditionally, all large factories easily reach national use standards in the sealing process treatment of a bag type dust collector body, and the dust collector body is relatively characterized in that the dust discharging system at the lower end of the bag type dust collector body comprises dust discharging system components including a conical dust bin, and the dust discharging system components are easily sealed in place in the dust discharging process, so that air enters the dust collector; on the other hand, the explosion-proof bin wall vibrator is arranged on the bin wall for conveniently discharging ash in operation, the ash is more conveniently discharged from the conical ash bin through vibration generated by the explosion-proof bin wall vibrator, but severe vibration also causes relaxation of a sealing part, so that air enters the dust remover, and explosion danger is caused.

On the other hand, the dust remover separates dust from flue gas, the dust is collected in an ash bucket of an ash discharging system below the dust remover, and the ash discharging system conveys the dust out of the dust remover for centralized treatment. However, because the dust remover has large dust discharge amount, the dust remover needs to be transported by using a dump truck, and dust emission is very easy to generate in the dust discharge process to pollute the environment. In order to solve the dust emission problem, a worker usually needs to be specially responsible for controlling a water adding valve when discharging ash, so that labor is consumed, the ash discharging efficiency is low, water is less when discharging ash, secondary dust emission phenomenon can be caused, and environmental pollution is caused.

In order to solve the above problems, there is a need for an ash discharging device which is effective, simple in structure and good in universality, and can effectively reduce dust while ensuring tightness.

Disclosure of Invention

The utility model provides a sealed ash discharging system of a bag type dust collector, which has the advantages of effectively preventing dangerous gas from leaking, along with high dust removing efficiency, safety and stability, effectively avoiding ash and dust emission, and solving the problems in the prior art

The specific scheme of the utility model is as follows: the sealed ash discharging system of the bag type dust collector comprises a conical ash bin, wherein the conical ash bin is in a conical bin section with a wide upper part and a narrow lower part, and the wider upper end of the conical ash bin is connected with the lower end of the dust collector body; the periphery of the conical ash bin is wound with a steam heating pipe, and the upper part and the lower part of the conical ash bin are respectively provided with a high level gauge and a low level gauge; the lower end of the conical ash bin is connected with an intermediate bin positioned below the conical ash bin through a pipeline, and a sealing valve device is arranged on the pipeline; the middle bin is a cylindrical tank body with a round top cover, and the lower end of the cylindrical tank body is connected with the upper large end of a conical ash bucket; the outer side of the intermediate bin is provided with an explosion-proof bin wall vibrator and a temperature detector, the periphery of the intermediate bin is wound with a steam heating pipe, and the upper part and the lower part of the intermediate bin are respectively provided with a high level gauge and a low level gauge; the lowest end of the intermediate bin is provided with a discharger device, and the side edges of the intermediate bin and the conical ash bin are both provided with an explosion-proof bin wall vibrator and a thermometer.

And a sealing valve device is arranged on a pipeline between the conical ash bin and the intermediate bin and comprises a first pneumatic gate valve, a pneumatic dome valve and a corrugated expander.

And a balance pipe is additionally arranged between the conical bin and the intermediate bin, and a balance valve is arranged on the balance pipe.

The discharger device at the lowest end of the intermediate bin comprises a second pneumatic gate valve, and a rotary discharger and a water spray humidifier fixed on the rotary discharger are connected below the second pneumatic gate valve.

The top end of the intermediate bin is provided with a diffusing pipe, and a diffusing valve is arranged on the diffusing pipe.

And a screw conveyor is arranged on the terrace right below the discharger at the lowest end of the intermediate bin.

In operation, when the accumulated ash in the conical ash bin in the dust remover body reaches a high material level, the first pneumatic gate valve and the pneumatic dome valve below the conical ash bin are sequentially opened, the balance valve on the balance pipe is simultaneously opened, the accumulated ash in the conical ash bin falls into the middle bin and is discharged to a low material level, the pneumatic gate valve and the pneumatic dome valve on the conical ash bin are closed, and the second pneumatic gate valve below the middle bin, the rotary discharger and the water spray humidifier on the rotary discharger are simultaneously opened, so that the accumulated ash is discharged to the screw conveyor or the dump truck, and then the accumulated ash is conveyed out. And when the ash deposition emptying signal exists at the discharging position of the intermediate bin, closing the second pneumatic gate valve and the rotary discharger below the intermediate bin.

The steam heating pipes are wound around the peripheries of the conical ash bin and the middle bin, so that the aim of the utility model is to prevent accumulated ash from hardening in the conical ash bin and the middle bin.

A balance pipe is additionally arranged between the conical ash bin and the middle bin, and a balance valve is arranged on the balance pipe, so that the purpose of the arrangement is to adjust and balance the air pressure in the conical ash bin and the middle bin, and accordingly ash discharge is smooth.

The lower end of the conical ash bin is connected with the middle bin positioned below the conical ash bin through a pipeline, and the pipeline is provided with a sealing valve device; on the other hand, a sealing valve device is arranged between the conical ash bin and the middle bin, and the ash discharging structure is more beneficial to preventing air from entering the bag type dust collector, so that safety accidents are prevented.

The top cover of the intermediate bin is provided with a diffusing pipe, and the diffusing pipe is provided with a diffusing valve; the lower part of the middle bin is connected with a replacement gas pipeline through a replacement gas inlet pneumatic ball valve, the other end of the replacement gas pipeline is bifurcated into two pipelines, and the two pipelines are respectively connected with a compressed air storage tank and a nitrogen storage tank through a compressed air pneumatic ball valve and a nitrogen pneumatic ball valve; when the internal parts of the intermediate bin fail, the sealing valve device between the intermediate bin and the conical ash bin is closed, the balance valve on the balance pipe is closed, the vent valve on the vent pipe at the top end of the intermediate bin is opened, the replacement gas inlet pneumatic ball valve and the nitrogen pneumatic ball valve are opened to charge nitrogen into the intermediate bin, the charged nitrogen drives the original gas or other dangerous gases of the intermediate bin from the vent pipe, the nitrogen pneumatic ball valve is closed and the compressed air pneumatic ball valve is opened to charge air into the intermediate bin and drive the nitrogen from the intermediate bin, at the moment, the intermediate bin is filled with air, the air components of the air are confirmed to be the same as the components of external air by the detection system, and personnel or equipment can enter the intermediate bin to complete maintenance work.

The utility model has the beneficial effects that: the dust collector has the advantages of effectively preventing dangerous gas leakage, being high in dust collection efficiency, safe and stable, and effectively avoiding dust emission and raising.

Drawings

FIG. 1 is a block diagram of a bag house and its seal ash removal system according to the present utility model.

The drawings show: 1, a dust remover body; 2 a thermometer; 3, an explosion-proof bin wall vibrator; 4, a conical ash bin; 5, heating the pipe by steam; 6, a high level gauge; 7, a low level gauge; 8 balancing pipes; 9 balancing valves; 10 a first pneumatic gate valve; 11 pneumatic dome valve; a 12 wave expander; 13 middle bin; 14 a second pneumatic gate valve; 15, rotating the discharger; 16 screw conveyor.

Detailed Description

The sealed ash discharging system of the bag type dust collector shown in fig. 1 comprises a conical ash bin 4, wherein the conical ash bin 4 is in the shape of a conical bin section with a wide upper part and a narrow lower part, and the wider upper end of the conical ash bin 4 is connected with the lower end of the dust collector body 1; an explosion-proof bin wall vibrator 3 and a temperature detector 2 are arranged on the side edge of the conical ash bin 4, a steam heating pipe 5 is wound around the periphery of the conical ash bin 4, and a high level gauge 6 and a low level gauge 7 are respectively arranged on the upper part and the lower part of the conical ash bin 4; the lower end of the conical ash bin 4 is connected with an intermediate bin 13 positioned below the conical ash bin 4 through a pipeline, and the pipeline is sequentially provided with a first pneumatic gate valve, a pneumatic dome valve 11 and a corrugated expander 12 from top to bottom; the middle bin 13 is a cylindrical tank body with a round top cover, and the lower end of the cylindrical tank body is connected with the upper large end of a conical ash bucket; the outside of the intermediate bin 13 is provided with an explosion-proof bin wall vibrator 3 and a temperature detector 2, the periphery of the intermediate bin 13 is wound with a steam heating pipe 5, and the upper part and the lower part of the intermediate bin 13 are respectively provided with a high level gauge 6 and a low level gauge 7; the lowest end of the intermediate bin 13 is provided with a second pneumatic gate valve, and a rotary discharger 15 and a water spray humidifier fixed on the rotary discharger 15 are connected below the second pneumatic gate valve; a balance pipe 8 is arranged between the conical bin and the intermediate bin 13, and a balance valve 9 is arranged on the balance pipe 8; a screw conveyor 16 is arranged on the terrace right below the discharger at the lowest end of the intermediate bin 13.

In operation, when the accumulated ash in the conical ash bin 4 in the dust remover body 1 reaches a high material level, the first pneumatic gate valve 10 and the pneumatic dome valve 11 below the conical ash bin 4 are sequentially opened, meanwhile, the balance valve 9 on the balance pipe 8 is opened, the accumulated ash in the conical ash bin 4 falls into the middle bin 13 and is discharged to a low material level, the pneumatic gate valve and the pneumatic dome valve 11 on the conical ash bin 4 are closed, meanwhile, the second pneumatic gate valve 14 and the rotary discharger 15 below the middle bin 13 and the water spray humidifier on the rotary discharger 15 are opened, the accumulated ash is discharged to the screw conveyor 16 or the dump truck, and then the accumulated ash is conveyed out, and the second pneumatic gate valve 14 and the rotary discharger 15 below the middle bin 13 are closed when an accumulated ash emptying signal exists in the lower material level of the middle bin 13.

The sealed ash discharging system has the advantages of effectively preventing dangerous gas from leaking, being high in dust removing efficiency, safe and stable, and effectively avoiding ash and dust emission.

Claims

1. A sealed ash discharge system of a bag type dust collector is characterized in that: the dust collector comprises a conical ash bin, wherein the conical ash bin is in a conical bin section with a wide upper part and a narrow lower part, and the wider end of the upper part of the conical ash bin is connected with the lower end of the dust collector body; the periphery of the conical ash bin is wound with a steam heating pipe, and the upper part and the lower part of the conical ash bin are respectively provided with a high level gauge and a low level gauge; the lower end of the conical ash bin is connected with an intermediate bin positioned below the conical ash bin through a pipeline, and a sealing valve device is arranged on the pipeline; the middle bin is a cylindrical tank body with a round top cover, and the lower end of the cylindrical tank body is connected with the upper large end of a conical ash bucket; the periphery of the intermediate bin is wound with a steam heating pipe, and the upper part and the lower part of the intermediate bin are respectively provided with a high level gauge and a low level gauge; the lowest end of the intermediate bin is provided with a discharger device, and the side edges of the intermediate bin and the conical ash bin are provided with an explosion-proof bin wall vibrator and a thermometer.

2. The sealed ash discharge system of a bag house of claim 1, wherein: the pipeline between the conical ash bin and the intermediate bin is provided with a sealing valve device which comprises a first pneumatic gate valve, a pneumatic dome valve and a corrugated expander.

3. The sealed ash discharge system of a bag house of claim 1, wherein: a balance pipe is additionally arranged between the conical bin and the intermediate bin, and a balance valve is arranged on the balance pipe.

4. The sealed ash discharge system of a bag house of claim 1, wherein: the discharger device at the lowest end of the intermediate bin comprises a second pneumatic gate valve, and a rotary discharger and a water spray humidifier fixed on the rotary discharger are connected below the second pneumatic gate valve.

5. The sealed ash discharge system of a bag house of claim 1, wherein: the top cover of the intermediate bin is provided with a diffusing pipe, and the diffusing pipe is provided with a diffusing valve; the lower part of the middle bin is connected with a replacement air pipeline through a replacement air inlet pneumatic ball valve, the other end of the replacement air pipeline is bifurcated into two pipelines, and the two pipelines are respectively connected with a compressed air storage tank and a nitrogen storage tank through a compressed air pneumatic ball valve and a nitrogen pneumatic ball valve.