CN220026374U - Boiler flue gas dust removal device - Google Patents

Abstract

The utility model relates to a boiler flue gas dust removal device, which comprises a dust remover (1) and an ash discharge system, wherein a flue gas inlet (11) and a flue gas outlet (12) are formed in the side wall of the dust remover, a blanking opening (13) is formed in the bottom plate of the dust remover, and a blanking valve (131) is arranged on the blanking opening. The ash discharge system comprises a transmitter (2), an ash bin (3) and an ash discharge pipe (4), wherein the top of the transmitter is provided with a feed inlet (21), an air inlet (22) and a pressure relief opening (23), the bottom of the transmitter is provided with a discharge outlet (24), the feed inlet is communicated with a discharge outlet (13), an air inlet valve (221) is arranged on the air inlet, a pressure relief valve (231) is arranged on the pressure relief opening, a discharge valve is arranged on the discharge outlet, an ash inlet, an ash outlet (32) and an exhaust port are arranged on the ash bin, and an ash outlet valve is arranged on the ash outlet. The ash discharging pipe is respectively communicated with the blanking port and the ash inlet. The device is sealed in the whole process of dust conveying, dust can not leak, and environmental pollution is prevented.

Description

Boiler flue gas dust removal device

Technical Field

The utility model relates to a boiler flue gas dust removal device, in particular to a structure of the boiler flue gas dust removal device.

Background

At present, for the boiler flue gas that contains solid particles or dust, carry out the purification of flue gas after adopting the bag collector to handle generally, the bag collector relies on the filter bag that the fibre filter material made to handle the flue gas, and after the flue gas got into the dust removal intracavity, clean flue gas passed the filter bag and discharges, and the dust in the flue gas is blocked outside the filter bag, falls into the dust discharge mouth department discharge in dust removal chamber bottom, and the filter bag can trap the dust of different natures, can also form the dust layer on the filter bag surface, improves gas purification effect.

However, when the dust remover is used for discharging ash, the dust discharged from the ash discharge port is usually conveyed to the hauling truck through the screw conveyor, and is pulled to a cement production workshop by the hauling truck to be used as cement production raw materials.

In addition, because the flue gas has higher temperature and certain moisture content, the flue gas can be rapidly cooled after entering the inside of the bag type dust collector, so that water in the flue gas is separated out, and moisture condensation tends to occur on the inner surface of the filter bag, so that dust adhered to the surface of the filter bag absorbs the moisture of the condensation to generate adhesion, further the air holes of the filter bag are blocked, and the normal operation of the dust collector is influenced.

The utility model provides a boiler flue gas dust removal device, which solves the problem that the existing boiler flue gas dust remover is large in dust emission and conveying.

Another aim is to solve the problem that the filter bag air holes of the existing boiler flue gas dust remover are easy to be blocked, and the normal work of the dust remover is affected.

Disclosure of Invention

In order to solve the problems, the utility model provides a boiler flue gas dust removal device, which comprises a dust remover 1 and an ash discharging system, wherein a flue gas inlet 11 and a flue gas outlet 12 are arranged on the side wall of the dust remover 1, a blanking opening 13 is arranged on the bottom plate of the dust remover 1, a blanking valve 131 is arranged on the blanking opening 13, and a filter bag 14 for filtering dust in flue gas is arranged inside the dust remover 1. The ash discharging system comprises a transmitter 2, an ash bin 3 and an ash discharging pipe 4, wherein the transmitter 2 is arranged at a feed opening 13 of the dust remover 1, a feed opening 21, an air inlet 22 and a pressure relief opening 23 are arranged at the top of the transmitter 2, a discharge opening 24 is arranged at the bottom of the transmitter, the feed opening 21 is communicated with the feed opening 13, an air inlet valve 221 is arranged on the air inlet 22, a pressure relief valve 231 is arranged on the pressure relief opening 23, and a discharge valve 241 is arranged on the discharge opening 24. The ash bin 3 is provided with an ash inlet 31, an ash outlet 32 and an exhaust port 33, the ash outlet 32 is provided with an ash outlet valve 321, the exhaust port 33 is provided with a filter 34, one end of the ash discharge pipe 4 is communicated with the feed opening 13 of the transmitter 2, and the other end of the ash discharge pipe is communicated with the ash inlet 31 of the ash bin 3.

Therefore, when the device works, the flue gas enters the dust remover 1, the flue gas filtered by the filter bag 14 is discharged from the flue outlet 12, dust in the flue gas is discharged into the transmitter 2 from the blanking port 13 at fixed time, when the dust in the transmitter 2 reaches a certain amount, the blanking valve 131 and the pressure release valve 231 are closed, the discharge valve 241 is opened, high-pressure air enters the transmitter 2 from the air inlet 22 of the transmitter 2, the dust in the transmitter 2 is discharged into the ash bin 3 through the ash discharge pipe 4, the high-pressure air entering the ash bin 3 is discharged from the air outlet 33, and the dust is blocked by the filter piece 34 and stored in the ash bin 3 for downstream production.

Through setting up ash discharging system at the feed opening 13 of dust remover 1, the dust through dust remover 1 behind the flue gas dust removal is directly carried to the low reaches workshop through transmitter 2, ash discharging pipe 4 and dust, and whole sealed in the dust conveying process, the dust can not leak, solves current dust remover 1 in the unloading in-process, screw conveyer transmission in-process and the in-process raise dust of haulage car transportation big, operational environment is poor, influences the healthy problem of staff.

Preferably, the separator 15 is arranged inside the dust remover 1, the separator 15 is horizontally arranged inside the dust remover 1, the inside of the dust remover 1 is divided into a disposal cavity 16 positioned at the lower part of the dust remover 1 and a bag chamber 17 positioned at the upper part of the dust remover 1, a plurality of mounting holes 151 are arranged on the separator 15, the disposal cavity 16 is communicated with the smoke inlet 11, the bag chamber 17 is communicated with the smoke outlet 12, and the disposal cavity 16 is communicated with the mounting holes 151. The filter bag 14 is arranged in the bag chamber 17, the closed end is fixed at the top of the bag chamber 17, the open end is fixed at the mounting hole 151 on the partition plate 15, and the interior of the filter bag 14 is communicated with the disposal cavity 16.

The interior of the dust remover 1 is divided into a disposal cavity 16 and a bag chamber 17 by the partition plate 15, the disposal cavity 16 is communicated with the smoke inlet 11, the bag chamber 17 is communicated with the smoke outlet 12, the filter bag 14 is arranged in the bag chamber 17, the open end of the filter bag is arranged at a mounting hole 151 on the partition plate 15, after the smoke entering the disposal cavity 16 through the smoke inlet 11 enters the filter bag 14, clean smoke passes through the filter bag 14, enters the bag chamber 17 and is discharged from the smoke outlet 12, dust in the smoke is blocked by the filter bag 14 and falls from the filter bag 14 to a blanking opening 13 at the bottom of the dust remover 1, and the disposal cavity 16 is arranged at the lower part of the bag chamber 17, so that the dust can fall conveniently.

Preferably, the closed end of the filter bag 14 is suspended from the top of the dust collector 1 by a spring 18. The closed end of the filter bag 14 is hung at the top of the dust remover 1 through the spring 18, the spring 18 can support the filter bag 14, the tightness of the filter bag 14 is kept moderate, the filter bag 14 can be prevented from being damaged when the filter bag 14 is stressed excessively, the vibration effect of the filter bag 14 can be increased, and the dust on the filter bag 14 is promoted to fall.

Preferably, the top of the spring 18 is fixedly connected with the top of the dust remover 1 through a vibrator 181. Through setting up spring 18 top and passing through vibrator 181 and dust remover 1 top fixed connection, when the dust of adhesion on filter bag 14 is too much, can control spring 18 through vibrator 181 and drive filter bag 14 vibration to shake the dust on the filter bag 14, prevent that the dust on the filter bag 14 from too much blockking up filter bag 14, influence dust remover 1 normal work.

Preferably, the dust remover 1 is provided with a blowback port 19 communicated with the baghouse 17, and the blowback port 19 is provided with a blowback valve 191. By providing the back-blowing port 19 communicating with the bag chamber 17 on the dust collector 1 and providing the back-blowing valve 191 on the back-blowing port 19, when the filter holes on the filter bag 14 are blocked by dust, the dust on the filter bag 14 can be blown off by opening the back-blowing valve 191 and back-blowing the filter bag 14 by high-pressure air, so that the filter bag 14 can continue to filter.

Preferably, the ash removing device further comprises an air supplementing ring 41, wherein the air supplementing ring 41 is arranged on the ash removing pipe 4, and an air supplementing valve 42 is arranged on the air supplementing ring 41. By providing the air-supplementing ring 41 on the ash discharging pipe 4, compressed air can be changed into tangential annular air flow to be input into the ash discharging pipe 4, so that the dust can be fluidized and mixed, and the boosting effect can be achieved.

Preferably, the air compressor 5 is further included, and an air outlet 51 of the air compressor 5 is respectively communicated with the back blowing port 19 through a back blowing pipe 52, is communicated with the air supplementing ring 41 through an air supplementing pipe 53, and is communicated with the air inlet 22 of the transmitter 2 through an air compressing pipe 54.

Preferably, the filter 34 includes a mounting cylinder 35 and a filter screen 36, the exhaust port 33 is provided with internal threads 37, the side wall of the mounting cylinder 35 is provided with external threads 38 matching the internal threads 37, the filter screen 36 is arranged in the mounting cylinder 35, and the mounting cylinder 35 is mounted on the exhaust port 33. Through setting up filter 34 and gas vent 33 through threaded connection, can make things convenient for filter 34 dismouting, conveniently wash filter 34.

Preferably, the transmitter 2 is provided with a level gauge 25. By providing the level gauge 25 on the transmitter 2, the amount of dust in the transmitter 2 can be monitored, and when the amount of dust in the transmitter 2 reaches a certain amount, the dust is discharged and transmitted in time.

Drawings

FIG. 1 is a schematic diagram of a boiler flue gas dust removal device;

FIG. 2 is a schematic diagram of a dust collector;

FIG. 3 is a schematic diagram of a transmitter configuration;

FIG. 4 is a schematic view of a bin structure;

FIG. 5 is a schematic view of the filter element and ash bin installation.

In the figure, the dust collector is 1, the smoke inlet is 12, the smoke outlet is 13, the blanking port is 131, the blanking valve is 14, the filter bag is 15, the baffle is 151, the mounting hole is 16, the disposal cavity is 17, the bag chamber is 18, the spring is 181, the vibrator is 19, the back blowing port is 191, the back blowing valve is 2, the transmitter is 21, the feeding port is 22, the air inlet is 221, the air inlet valve is 23, the pressure relief port is 231, the pressure relief valve is 24, the discharging port is 241, the discharging valve is 25, the material level gauge is 3, the ash bin is 31, the ash inlet is 32, the ash outlet is 321, the ash valve is 33, the air outlet is 34, the filter piece is 35, the mounting cylinder is 36, the filter screen is 37, the internal threads are 38, the external threads are 4, the ash discharging pipe is 41, the air supplementing valve is 42, the air supplementing ring is 5, the air compressor is 51, the air outlet is 52, the back blowing pipe is 53, and the air supplementing pipe is 54.

Detailed Description

Preferred embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the boiler flue gas dust removal device comprises a dust remover 1 and an ash discharging system, wherein a flue gas inlet 11 and a flue gas outlet 12 are formed in the side wall of the dust remover 1, a blanking opening 13 is formed in the bottom plate of the dust remover 1, a blanking valve 131 is arranged on the blanking opening 13, and a filter bag 14 for filtering dust in flue gas is arranged inside the dust remover 1. The smoke inlet 11 is used for communicating with a smoke outlet of the boiler, smoke exhausted by the boiler enters the dust remover 1 from the smoke inlet 11, clean smoke filtered by the filter bag 14 is exhausted from the smoke outlet 12, and dust in the smoke is blocked by the filter bag 14 from falling to the blanking opening 13.

The ash discharging system comprises an air compressor 5, a transmitter 2, an ash discharging pipe 4 and an ash bin 3, wherein the air compressor 5 is used for providing compressed air.

The air outlet 51 of the air compressor 5 is communicated with the back-blowing port 19 through a back-blowing pipe 52, with the air-supplementing ring 41 through an air-supplementing pipe 53, and with the air inlet 22 of the transmitter 2 through an air-compressing pipe 54.

As shown in fig. 1 and 3, the transmitter 2 is disposed below the dust collector 1, a feed inlet 21, an air inlet 22 and a pressure relief opening 23 are disposed at the top of the transmitter 2, and a discharge outlet 24 is disposed at the bottom. The feed inlet 21 of the transmitter 2 is communicated with the feed outlet 13 of the dust remover 1. The transmitter 2 is a transmitter 2 of the prior art.

The air inlet 22 of the transmitter 2 is communicated with the air outlet 51 of the air compressor 5 through an air pressure pipe 54, an air inlet valve 221 is arranged on the air inlet 22, high-pressure air generated by the air compressor 5 enters the transmitter 2 through the air inlet 22, dust in the transmitter 2 is discharged into the ash discharge pipe 4 through the discharge hole 24, and is conveyed into the ash bin 3 through the ash discharge pipe 4. The air inlet valve 221 can control the on-off of the air inlet 22 and control the high-pressure air to enter the transmitter 2.

The pressure relief opening 23 is communicated with the atmosphere, a pressure relief valve 231 is arranged on the pressure relief opening 23, and the pressure relief opening 23 is used for discharging air in the transmitter 2 when dust enters the transmitter 2, so that feeding is easier. The pressure relief opening 23 is provided with a filter device to prevent dust in the transmitter 2 from being discharged. The relief valve 231 is used to control the opening and closing of the relief port 23.

The discharge port 24 is communicated with the ash discharge pipe 4, a discharge valve 241 is arranged on the discharge port 24, and the discharge valve 241 is used for controlling the opening and closing of the discharge port 24.

The transmitter 2 is provided with a level gauge 25. The dust amount in the transmitter 2 can be monitored through the level gauge 25, and when the dust in the transmitter 2 reaches a certain amount, for example, the level gauge 25 displays that the material reaches 90% of the tank volume, the air inlet valve 221 and the discharge valve 241 are opened, the pressure release valve 231 and the blanking valve 131 are closed, and the dust is discharged and sent timely.

As shown in fig. 1 and 4, the ash bin 3 is provided with an ash inlet 31, an ash outlet 32 and an exhaust port 33, the ash outlet 32 is provided with an ash outlet valve 321, and the exhaust port 33 is provided with a filter 34. The high pressure air entering the ash bin 3 is discharged from the air outlet 33, dust is blocked by the filter 34 and stored in the ash bin 3, and the ash bin 3 can temporarily store the dust.

The ash bin 3 is arranged in a downstream production plant, for example in a cement production plant or in a dust handling plant.

One end of the ash discharging pipe 4 is communicated with the blanking port 13 of the transmitter 2, and the other end is communicated with the ash inlet 31 of the ash bin 3. The ash discharge pipe 4 is provided with an air supplementing ring 41, the air supplementing ring 41 is arranged at one end of the ash discharge pipe 4 close to the transmitter 2, and the air supplementing ring 41 is provided with an air supplementing valve 42.

When the air is supplied to the air supply ring 41, the check mechanism inside the air supply ring prevents dust in the ash discharge pipe 4 from flowing back into the air supply ring 41. The air-compensating ring 41 is a conventional air-compensating ring 41.

By providing the air-supplementing ring 41 on the ash discharging pipe 4, compressed air can be changed into tangential annular air flow to be input into the ash discharging pipe 4, so that the dust can be fluidized and mixed, and the boosting effect can be achieved.

As shown in fig. 2, a partition plate 15 is disposed inside the dust collector 1, the partition plate 15 is horizontally disposed inside the dust collector 1, the inside of the dust collector 1 is partitioned into an independent disposal cavity 16 and a bag chamber 17, and a plurality of mounting holes 151 are formed in the partition plate 15. The bottom plate of the dust remover 1 is funnel-shaped, and the feed opening 13 is arranged at the lowest part of the funnel-shaped structure on the bottom plate.

The disposal cavity 16 is positioned at the lower part of the dust remover 1 and is communicated with the smoke inlet 11. The bag chamber 17 is positioned at the upper part of the dust remover 1 and communicated with the smoke outlet 12, and the bag chamber 17 is communicated with the disposal cavity 16 through the mounting hole 151. The filter bag 14 is arranged in the bag chamber 17, the closed end is fixed at the top of the bag chamber 17, the open end is fixed at the mounting hole 151 on the partition plate 15, and the interior of the filter bag 14 is communicated with the disposal cavity 16.

The interior of the dust remover 1 is divided into a disposal cavity 16 and a bag chamber 17 by a partition plate 15, the disposal cavity 16 is communicated with the smoke inlet 11, the bag chamber 17 is communicated with the smoke outlet 12, the filter bag 14 is arranged in the bag chamber 17, and the open end of the filter bag 14 is arranged at a mounting hole 151 on the partition plate 15. The flue gas passing through the dust collector 1 of the flue inlet 11 firstly enters the filter bag 14 through the disposal cavity 16, clean flue gas passes through the filter bag 14 and enters the bag chamber 17 and then is discharged from the flue outlet 12, dust in the flue gas is blocked by the filter bag 14 and then falls from the filter bag 14 to the blanking opening 13 at the bottom of the disposal cavity 16, and when the dust in the disposal cavity 16 is accumulated to a certain amount, the blanking valve 131 is opened to feed into the transmitter 2. A disposal chamber 16 is provided at the lower part of the pocket 17 to facilitate the falling of dust.

As shown in fig. 2, the closed end of the filter bag 14 is suspended from the top of the dust collector 1 by a spring 18. The spring 18 can support the filter bag 14, keep the elasticity of the filter bag 14 moderate, prevent the filter bag 14 from being damaged when the filter bag 14 is stressed excessively, increase the vibration action of the filter bag 14 and promote the dust on the filter bag 14 to fall.

The top of the spring 18 is fixedly connected with the top of the dust remover 1 through a vibrator 181. Through setting up spring 18 top and passing through vibrator 181 and dust remover 1 top fixed connection, when the dust of adhesion on filter bag 14 is too much, can control spring 18 through vibrator 181 and drive filter bag 14 vibration to shake the dust on the filter bag 14, prevent that the dust on the filter bag 14 from too much blockking up filter bag 14, influence dust remover 1 normal work.

As shown in fig. 2, the dust collector 1 is provided with a blowback port 19 communicating with the baghouse 17, and the blowback port 19 is provided with a blowback valve 191. By providing the back-blowing port 19 communicating with the bag chamber 17 on the dust collector 1 and providing the back-blowing valve 191 on the back-blowing port 19, when the filter holes on the filter bag 14 are blocked by dust, the dust on the filter bag 14 can be blown off by opening the back-blowing valve 191 and back-blowing the filter bag 14 by high-pressure air, so that the filter bag 14 can continue to filter.

As shown in fig. 5, the filter 34 includes a mounting cylinder 35 and a filter screen 36, the exhaust port 33 is provided with internal threads 37, the side wall of the mounting cylinder 35 is provided with external threads 38 matching the internal threads 37, the filter screen 36 is disposed in the mounting cylinder 35, and the mounting cylinder 35 is mounted on the exhaust port 33.

The mounting cylinder 35 and the exhaust port 33 are both cylindrical, and the outer diameter of the mounting cylinder 35 is the same as the inner diameter of the exhaust port 33, so that the mounting cylinder 35 can be inserted into the exhaust port 33.

The side wall of the mounting cylinder 35 is provided with external threads 38 matched with the internal threads 37, wherein the matching means that the external threads 38 and the internal threads 37 have the same tooth shape and pitch, so that the mounting cylinder 35 can be inserted into the exhaust port 33 and fixed.

Through setting up filter 34 and including mounting cylinder 35 and setting up the filter screen 36 in the cartridge filter, be provided with internal thread 37 on the gas vent 33, be provided with the external screw thread 38 that internal thread 37 matees on the mounting cylinder 35 lateral wall, filter 34 passes through threaded connection mode to be fixed on gas vent 33, makes things convenient for filter 34 dismouting, washs filter screen 36.

The valves such as the blowback valve 191, the blanking valve 131, the air inlet valve 221, the pressure release valve 231, the ash outlet valve 321, the air compensating valve 42 and the like can be automatically controlled valves such as electromagnetic valves, pneumatic valves and the like.

Preferably, the automatic control device further comprises a control system, wherein the control system is electrically connected with the vibrator 181, the blowback valve 191, the blanking valve 131, the air inlet valve 221, the pressure relief valve 231, the ash outlet valve 321, the air supplementing valve 42, the air compressor 5, the material level gauge 25 and the like, and the control device automatically operates.

During operation, the smoke inlet 11 is communicated with the smoke outlet of the boiler, the smoke exhausted by the boiler enters the dust remover 1 from the smoke inlet 11, clean smoke filtered by the filter bag 14 is exhausted from the smoke outlet 12, dust in the smoke is blocked by the filter bag 14 to fall to the blanking opening 13, and the timing discharge of the dust into the transmitter 2 is controlled by controlling the blanking valve 131.

When the dust in the transmitter 2 reaches a certain amount, the blanking valve 131 and the pressure relief valve 231 are closed, the air inlet valve 221, the discharging valve 241 and the air compensating valve 42 are opened, the air compressor 5 is opened, one path of high-pressure air enters the transmitter 2 from the air inlet 22 of the transmitter 2, the dust in the transmitter 2 is discharged into the ash discharging pipe 4, and the other path of high-pressure air enters the ash discharging pipe 4 through the air compensating ring 41, so that the dust in the ash discharging pipe 4 is conveyed into the ash discharging bin 3. The high pressure air entering the ash bin 3 is discharged from the air outlet 33, and the dust is blocked by the filter 34 from being stored in the ash bin 3.

When more dust is adhered to the filter bag 14, the vibrator 181 can be opened to vibrate the filter bag 14, so that the dust on the filter bag 14 falls off, when dust scale formation is serious on the filter bag 14, the smoke is stopped, the back-flushing valve 191 is opened to clean the filter bag 14 in a back-flushing manner, and after the cleaning is finished, the back-flushing valve 191 is closed to continue purifying the smoke.

According to the utility model, the ash discharging system is arranged at the discharging opening 13 of the dust remover 1, dust obtained by removing dust from flue gas through the dust remover 1 is directly conveyed to a downstream production workshop through the transmitter 2, the ash discharging pipe 4 and the dust, the whole process of dust conveying is sealed, the dust is not leaked, and the environment is prevented from being polluted.

The closed end of the filter bag 14 is hung at the top of the dust remover 1 through the spring 18, the spring 18 can support the filter bag 14, the tightness of the filter bag 14 is kept moderate, the filter bag 14 can be prevented from being damaged when the filter bag 14 is stressed excessively, the vibration effect of the filter bag 14 can be increased, and the dust on the filter bag 14 is promoted to fall. The top of the spring 18 is fixedly connected with the top of the dust remover 1 through the vibrator 181, and when excessive dust is adhered to the filter bag 14, the vibrator 181 can control the spring 18 to drive the filter bag 14 to vibrate, so that the dust on the filter bag 14 is vibrated down, the filter bag 14 is prevented from being blocked by excessive dust on the filter bag 14, and the normal work of the dust remover 1 is influenced.

By providing the back-blowing port 19 communicating with the bag chamber 17 on the dust collector 1 and providing the back-blowing valve 191 on the back-blowing port 19, when the filter holes on the filter bag 14 are blocked by dust, the dust on the filter bag 14 can be blown off by opening the back-blowing valve 191 and back-blowing the filter bag 14 by high-pressure air, so that the filter bag 14 can continue to filter. By providing the air-supplementing ring 41 on the ash discharging pipe 4, compressed air can be changed into tangential annular air flow to be input into the ash discharging pipe 4, so that the dust can be fluidized and mixed, and the boosting effect can be achieved. Through setting up filter 34 and gas vent 33 through threaded connection, can make things convenient for filter 34 dismouting, conveniently wash filter 34.

It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims (9)

1. The boiler flue gas dust removal device is characterized by comprising a dust remover (1) and an ash discharge system;

a smoke inlet (11) and a smoke outlet (12) are formed in the side wall of the dust remover (1), a blanking opening (13) is formed in the bottom plate of the dust remover (1), a blanking valve (131) is arranged on the blanking opening (13), and a filter bag (14) for filtering dust in smoke is arranged inside the dust remover (1);

the ash discharging system comprises a transmitter (2), an ash bin (3) and an ash discharging pipe (4);

the transmitter (2) is arranged at a feed opening (13) of the dust remover (1), a feed opening (21), an air inlet (22) and a pressure relief opening (23) are formed in the top of the transmitter (2), and a discharge opening (24) is formed in the bottom of the transmitter;

the feeding hole (21) is communicated with the discharging hole (13);

an air inlet valve (221) is arranged on the air inlet (22);

the pressure relief opening (23) is provided with a pressure relief valve (231);

a discharge valve (241) is arranged on the discharge hole (24);

an ash inlet (31), an ash outlet (32) and an exhaust port (33) are arranged on the ash bin (3);

an ash outlet valve (321) is arranged on the ash outlet (32);

a filter (34) is arranged on the exhaust port (33);

one end of the ash discharging pipe (4) is communicated with the blanking port (13) of the transmitter (2), and the other end of the ash discharging pipe is communicated with the ash inlet (31) of the ash bin (3).

2. The boiler flue gas dust removal device according to claim 1, wherein a separator (15) is arranged inside the dust remover (1),

the separator (15) is horizontally arranged inside the dust remover (1), the inside of the dust remover (1) is divided into a treatment cavity (16) positioned at the lower part of the dust remover (1) and a bag chamber (17) positioned at the upper part of the dust remover (1), and a plurality of mounting holes (151) are formed in the separator (15);

the disposal cavity (16) is communicated with the smoke inlet (11);

the bag chamber (17) is communicated with the smoke outlet (12) and is communicated with the disposal cavity (16) through the mounting hole (151);

the filter bag (14) is arranged in the bag chamber (17), the closed end is fixed at the top of the bag chamber (17), the open end is fixed at the mounting hole (151) on the partition plate (15), and the interior of the filter bag (14) is communicated with the disposal cavity (16).

3. A boiler flue gas dust removal device according to claim 2, characterized in that the closed end of the filter bag (14) is suspended from the top of the dust collector (1) by means of a spring (18).

4. A boiler flue gas dust removal device according to claim 3, wherein the top of the spring (18) is fixedly connected with the top of the dust remover (1) by means of a vibrator (181).

5. The boiler flue gas dust removal device according to claim 4, wherein a back blowing port (19) communicated with the baghouse (17) is arranged on the dust remover (1), and a back blowing valve (191) is arranged on the back blowing port (19).

6. The flue gas dust removal device for a boiler according to claim 5, further comprising a make-up ring (41),

the air supplementing ring (41) is arranged on the ash discharging pipe (4), and the air supplementing valve (42) is arranged on the air supplementing ring (41).

7. The flue gas dust removal device for a boiler according to claim 6, further comprising an air compressor (5),

an air outlet (51) of the air compressor (5) is respectively communicated with the back blowing port (19) through a back blowing pipe (52), is communicated with the air supplementing ring (41) through an air supplementing pipe (53), and is communicated with an air inlet (22) of the transmitter (2) through an air compressing pipe (54).

8. The boiler flue gas dust removal device according to claim 7, wherein the filter member (34) comprises a mounting cylinder (35) and a filter screen (36),

an internal thread (37) is arranged on the exhaust port (33);

an external thread (38) matched with the internal thread (37) is arranged on the side wall of the mounting cylinder (35);

the filter screen (36) is arranged in the mounting cylinder (35);

the mounting cylinder (35) is mounted on the exhaust port (33).

9. A boiler flue gas dust removal device according to any one of claims 1-8, wherein a level gauge (25) is provided on the transmitter (2).