CN220360872U - Negative pressure blowback large cloth bag dust remover - Google Patents

Abstract

The utility model discloses a negative pressure blowback large cloth bag dust collector, which comprises large cloth bag dust collection equipment, wherein the large cloth bag dust collection equipment comprises a plurality of groups of cloth bag dust collector units, each cloth bag dust collector unit comprises two dust collection boxes which are distributed front and back, a gas collection chamber and dust collection chambers are sequentially arranged in the dust collection boxes from top to bottom, a plurality of dust collection bags are arranged in the dust collection chambers, the tops of the dust collection bags extend to the inside of the gas collection chambers, clean gas purified by each gas collection chamber is collected in an air outlet pipe through an exhaust pipe and is discharged into the atmosphere through an air pipe during normal operation of the equipment, and during ash removal, a blowback pipe is enabled to enable the air flow to flow into a blowback spray pipe, so that the dust collection bags are changed into shriveled from bulge, dust adhered on the dust collection bags is dithered and falls down into an ash bucket, and dust on the dust collection bags of other dust collectors can be sequentially cleaned and dust transportation and collected under the condition of normal operation of other dust collectors.

Description

Negative pressure blowback large cloth bag dust remover

Technical Field

The utility model relates to the technical field of large bag-type dust collectors, in particular to a negative pressure back-blowing large bag-type dust collector.

Background

The dust-collecting bag type dust collector is a dry dust-filtering device, it is suitable for catching tiny, dry, non-fibrous dust, the filter bag is made of woven filter cloth or non-woven felt, utilize the filtering action of the fibrous fabric to filter the dust-containing gas, after the dust-containing gas enters the bag type dust collector, the dust with big granule, great specific gravity, drop into the ash bucket due to the effect of gravity, the dust is blocked when the gas containing finer dust passes through the filter material, make the gas purified.

The basic principle of the conventional bag-type dust collector is that a fan is connected to generate a pressure difference, dust is left outside a filter bag after dust-containing gas passes through the filter bag, the dust on the filter bag is thicker along with dust collection, the excessive air quantity of the filter bag is reduced, the dust on the filter bag needs to be shaken off at the moment, the replacement times of the filter bag are reduced, and the atmospheric blowback is a common mode.

Because the bag-type dust collector of the prior art carries out back-blowing dust removal, because the required airflow volume is great, the back-blowing blower is generally required to be additionally arranged to carry out back-blowing dust removal on the bag-type dust collector, so that the cost of the bag-type dust collector is increased, and the removed dust does not have an automatic collection function and is difficult to carry out centralized treatment.

Disclosure of Invention

The utility model aims to provide a negative pressure back-blowing large cloth bag dust remover which has the characteristics that dust on dust removing bags of other dust removers can be removed in sequence under the condition that other dust removers normally operate, and the dust is convenient to convey and collect.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a negative pressure blowback big sack cleaner, includes big sack cleaner, big sack cleaner includes multiunit sack cleaner unit, the sack cleaner unit includes two dust removal casees that distribute from top to bottom, dust removal case's inside installs plenum chamber and dust removal room in proper order from top to bottom, the internally mounted of dust removal room has a plurality of dust removal bags, the top of dust removal bag extends to the inside of plenum chamber, the bottom intercommunication of dust removal case has the ash bucket, rotatory ash discharge valve is installed to the inside bottom of ash bucket, installs the conveyer between the bottom of a plurality of ash buckets that are located same one side, the motor is installed to the lateral wall of conveyer, the output of motor runs through the lateral wall of conveyer and installs the hob;

the exhaust disc type valve is installed to the lateral wall intercommunication of air collecting chamber, a plurality of the lateral wall intercommunication of blast pipe has the outlet duct, the other end intercommunication of outlet duct has the fan that sets up in big sack dust collecting equipment lateral wall, the preceding terminal surface intercommunication of fan has the breather pipe, the blowback pipe is installed to the lateral wall of breather pipe, the other end intercommunication of blowback pipe has a plurality of connecting pipes that run through a plurality of air collecting chamber top end faces respectively, blowback disc type valve is installed to the lateral wall of connecting pipe and the other end intercommunication has the blowback spray tube of installing in air collecting chamber inside.

In order to facilitate the flue gas to be introduced into the ash bucket, the negative pressure back-blowing large cloth bag dust remover is preferable, an air inlet box is arranged between the two dust removing boxes, an air inlet port is formed by penetrating through the outer side wall of the air inlet box, an air guide pipeline is communicated with the bottom of the air inlet box, an air inlet pipe is communicated between the outer side wall of the air guide pipeline and the outer side wall of the ash bucket, and an air inlet disc valve is arranged on the outer side wall of the air inlet pipe.

In order to facilitate the ejection of air flow in the blowback spray pipe, the negative pressure blowback large bag-type dust collector is preferable, and a plurality of spray heads are arranged on the outer side wall of the blowback spray pipe.

In order to facilitate uniform dispersion of the flue gas, the negative pressure back-blowing large cloth bag dust remover is preferable, and a flow dividing plate is arranged at the bottom of the inside of the dust removing chamber.

In order to facilitate dust collection, the negative pressure back-blowing large cloth bag dust remover is preferable, and the other end of the conveyor is communicated with a material receiving bin.

In order to support the cloth bag dust collector unit, the negative pressure back-blowing large cloth bag dust collector is preferable, and the bottoms of the outer side walls of the plurality of groups of cloth bag dust collector units are all provided with brackets.

Compared with the prior art, the utility model has the following beneficial effects:

when the device works normally, dust-containing gas enters the dust hopper through the air inlet box and the air guide pipeline respectively by starting the fan and opening all the air inlet disc valves, and flows uniformly through the flow dividing plates and then enters the dust collecting bags corresponding to each dust collecting chamber to filter the flue gas, a large amount of dust is attached to the dust collecting bags, clean gas enters the air collecting chambers through the dust collecting bags, so that the effect of purifying the flue gas is achieved, the purified air flow is discharged into the atmosphere through the vent pipe by opening the air outlet disc valves, and the purified clean gas of each air collecting chamber is collected at the air outlet pipe through the vent pipe;

when the dust removal is carried out, the air valve on the vent pipe is closed, the fan continues to rotate at the moment, clean air filtered in the vent pipe enters the inside of the back-blowing pipe, when the dust removal is carried out on each dust collection box in sequence, the back-blowing disk valve is opened by closing the exhaust disk valve of the dust collection box, so that the back-blowing pipe can enable air flow to enter the back-blowing spray pipe, the dust collection bag is changed from bulge to shrink, dust adhered to the dust collection bag is dithered and falls down to be settled into the dust hopper, and therefore dust on the dust collection bags of other dust collectors can be sequentially removed under the condition that other dust collectors normally run, then dust in the dust hopper falls into the conveyor, and the spiral rod is driven to rotate through the motor to convey the dust into the collecting bin for collection.

Drawings

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a left side cross-sectional view of the dust box of the present utility model;

fig. 3 is a top view of the diverter plate of the present utility model.

In the figure: 1. large cloth bag dust removing equipment; 101. a bracket; 102. a bag-type dust collector unit; 2. a dust removal box; 201. a dust removal chamber; 202. a plenum chamber; 203. a dust removal bag; 204. an ash bucket; 2041. rotating an ash discharge valve; 205. a diverter plate; 3. an air inlet box; 301. an air inlet pipe; 302. an intake disc valve; 4. an exhaust pipe; 401. an exhaust disc valve; 402. an air outlet pipe; 403. a blower; 404. a vent pipe; 5. a blowback pipe; 501. a connecting pipe; 502. a blowback disc valve; 503. blowback nozzle; 6. a conveyor; 601. a motor; 602. a screw rod; 7. and (5) a material receiving bin.

Detailed Description

Referring to fig. 1 to 3, a negative pressure back-blowing large bag-type dust collector comprises large bag-type dust collector 1, wherein the large bag-type dust collector 1 comprises a plurality of groups of bag-type dust collector units 102, each bag-type dust collector unit 102 comprises two dust collection boxes 2 which are distributed back and forth, a gas collection chamber 202 and a dust collection chamber 201 are sequentially arranged in the dust collection boxes 2 from top to bottom, a plurality of dust collection bags 203 are arranged in the dust collection chambers 201, the tops of the dust collection bags 203 extend to the inside of the gas collection chambers 202, ash hoppers 204 are communicated with the bottoms of the dust collection boxes 2, rotary ash discharge valves 2041 are arranged at the bottoms of the ash hoppers 204, a conveyor 6 is arranged between the bottoms of the ash hoppers 204 on the same side, a motor 601 is arranged on the outer side wall of the conveyor 6, and the output end of the motor 601 penetrates through the outer side wall of the conveyor 6 and is provided with a screw 602;

the lateral wall intercommunication of plenum 202 has blast pipe 4, and exhaust disc valve 401 is installed to the lateral wall of blast pipe 4, and the lateral wall intercommunication of a plurality of blast pipes 4 has outlet duct 402, and the other end intercommunication of outlet duct 402 has the fan 403 that sets up in the lateral wall of big sack dust collecting equipment 1, and the preceding terminal surface intercommunication of fan 403 has breather pipe 404, and blowback pipe 5 is installed to the lateral wall of breather pipe 404, and the other end intercommunication of blowback pipe 5 has a plurality of connecting pipes 501 that run through a plurality of plenum 202 top surfaces respectively, and blowback disc valve 502 is installed to the lateral wall of connecting pipe 501 and the other end intercommunication has the blowback spray pipe 503 of installing in plenum 202 inside.

In this embodiment: when the device works normally, the fan 403 is started and all air inlet disc type valves 302 are opened, so that dust-containing gas enters the interiors of a plurality of ash inlet hoppers 204 respectively through the air inlet box 3 and the air guide pipelines, and after being subjected to flow equalization through the flow dividing plates 205, the dust-containing gas enters the interiors of dust collecting bags 203 corresponding to each dust collecting chamber 201 to filter the flue gas, a large amount of dust is attached to the dust collecting bags 203 at the moment, clean gas enters the interiors of each air collecting chamber 202 through the dust collecting bags 203, the effect of purifying the flue gas is achieved, the purified air flow is discharged into the atmosphere through the vent pipes 404 by opening the air outlet disc type valves 401, and the clean gas purified by each air collecting chamber 202 is collected at the air outlet pipes 402 through the vent pipes 4;

when the dust is removed, the air valve on the vent pipe 404 is closed, the fan 403 continues to rotate, clean air filtered in the vent pipe 404 enters the back blowing pipe 5, and when each dust removing box 2 is cleaned, the back blowing disk valve 502 is opened by closing the exhaust disk valve 401 of the dust removing box 2, so that the back blowing pipe 5 flows air into the back blowing spray pipe 503, the dust removing bag 203 is changed from bulge to shrink, dust adhered to the dust removing bag 203 is dithered and falls off to settle into the dust hopper 204, the purpose of cleaning the dust is achieved, then the dust in the dust hopper 204 falls into the conveyor 6, and the spiral rod 602 is driven to rotate by the motor 601 to convey the dust into the storage bin 7 for collection.

As a technical optimization scheme of the utility model, an air inlet box 3 is arranged between two dust removal boxes 2, an air inlet port is arranged on the outer side wall of the air inlet box 3 in a penetrating way, an air guide pipeline is communicated with the bottom, an air inlet pipe 301 is communicated between the outer side wall of the air guide pipeline and the outer side wall of an ash inlet hopper 204, and an air inlet disc valve 302 is arranged on the outer side wall of the air inlet pipe 301.

In this embodiment: by opening the air inlet disc valve 302, external flue gas is introduced into the air inlet port of the air inlet box 3, so that the flue gas enters the interior of the ash inlet bucket 204 through the air guide pipeline and the air inlet pipe 301, and then enters the interior of the dust removal chamber 201 for dust removal.

As a technical optimization scheme of the present utility model, a plurality of spray heads are installed on the outer side wall of the blowback nozzle 503.

In this embodiment: by providing a plurality of spray heads, blowback nozzle 503 is facilitated to spray a clean air stream.

As a technical optimization scheme of the utility model, a splitter plate 205 is installed at the bottom of the interior of the dust chamber 201.

In this embodiment: by providing the diverter plate 205, the flue gas inside the ash hopper 204 is caused to uniformly enter the interior of the dust chamber 201.

As a technical optimization scheme of the utility model, the other end of the conveyor 6 is communicated with a material receiving bin 7.

In this embodiment: by arranging the material collecting bin 7, dust is convenient to collect.

As a technical optimization scheme of the utility model, the bottoms of the outer side walls of the multi-group bag-type dust collector unit 102 are provided with brackets 101.

In this embodiment: the plurality of groups of bag-type dust collector units 102 are supported conveniently through the mounting bracket 101.

Working principle: firstly, connecting an air inlet box 3 with an external flue gas pipeline, when the equipment works normally, starting a fan 403 and opening all air inlet disc type valves 302, sucking dust-containing gas into the air inlet box 3 under the action of the fan 403, enabling the flue gas to enter the inside of an ash inlet hopper 204 through an air guide pipeline and an air inlet pipe 301, enabling the flue gas to enter the inside of a dust collection bag 203 corresponding to each dust collection chamber 201 after being subjected to flow equalization through a flow dividing plate 205, filtering the flue gas, enabling a large amount of dust to be attached to the dust collection bag 203 at the moment, enabling clean gas to enter the inside of each gas collection chamber 202 through the dust collection bag 203, so that the effect of purifying the flue gas is achieved, enabling purified gas flow to enter an exhaust pipe 4 through opening an exhaust disc type valve 401, and enabling clean gas purified by each gas collection chamber 202 to be collected in the air outlet pipe 402 through the exhaust pipe 404 and exhausted into the atmosphere;

with the increase of dust attached to the surface of the dust removing bag 203, the resistance of the dust remover continuously rises, when dust removal is needed, the dust removing is carried out by a plurality of dust removing boxes 2 separately, in the dust removing process, the air valve on the air pipe 404 is closed, the fan 403 rotates, clean air filtered in the air pipe 404 enters the inside of the blowback pipe 5, when dust removal is carried out on each dust removing box 2 in sequence, the exhaust disc valve 401 of the dust removing box 2 is closed, the blowback pipe 5 is opened, the air flow is led to the blowback spray pipe 503, the dust removing bag 203 is changed into a shrunken form by the blowback spray pipe 503 through the blowback action, the dust adhered to the dust removing bag 203 is dithered and falls into the dust hopper 204, so that the dust removing purpose is achieved, the blowback disc valve 502 of the chamber is closed, the exhaust disc valve 401 is opened to recover normal filtration of the chamber, dust in the next dust removing box 2 is carried out in sequence, the dust in the dust hopper 204 falls into the conveyer 6, and the dust in the dust hopper 204 is driven to rotate the spiral 602 to be collected by the spiral 7.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (6)

1. The utility model provides a big sack cleaner of negative pressure blowback, includes big sack cleaner (1), big sack cleaner (1) include multiunit sack cleaner unit (102), its characterized in that: the cloth bag dust collector unit (102) comprises two dust collection boxes (2) which are distributed front and back, a gas collection chamber (202) and a dust collection chamber (201) are sequentially arranged inside the dust collection boxes (2) from top to bottom, a plurality of dust collection bags (203) are arranged inside the dust collection chambers (201), the tops of the dust collection bags (203) extend to the inside of the gas collection chambers (202), ash hoppers (204) are communicated with the bottoms of the dust collection boxes (2), rotary ash discharge valves (2041) are arranged at the bottoms of the ash hoppers (204), a conveyor (6) is arranged between the bottoms of the ash hoppers (204) on the same side, a motor (601) is arranged on the outer side wall of the conveyor (6), and the output end of the motor (601) penetrates through the outer side wall of the conveyor (6) and is provided with a screw rod (602);

the utility model discloses a dust collection device, including air collecting chamber (202), exhaust pipe (4) are installed to lateral wall intercommunication of air collecting chamber (202), exhaust disk type valve (401) are installed to the lateral wall of exhaust pipe (4), a plurality of lateral wall intercommunication of exhaust pipe (4) has outlet duct (402), the other end intercommunication of outlet duct (402) has fan (403) that set up in big sack dust collecting device (1) lateral wall, the preceding terminal surface intercommunication of fan (403) has breather pipe (404), the pneumatic valve is installed to the other end of breather pipe (404), and blowback pipe (5) are installed to the lateral wall, the other end intercommunication of blowback pipe (5) has a plurality of connecting pipes (501) that run through a plurality of air collecting chamber (202) top end faces respectively, blowback disk type valve (502) are installed to the lateral wall of connecting pipe (501) and the other end intercommunication has blowback spray pipe (503) of installing in air collecting chamber (202) inside.

2. The negative pressure blowback large bag-type dust collector according to claim 1, wherein: an air inlet box (3) is arranged between the two dust removal boxes (2), an air inlet port is formed in the outer side wall of the air inlet box (3) in a penetrating mode, an air guide pipeline is communicated with the bottom of the air inlet box, an air inlet pipe (301) is communicated between the outer side wall of the air guide pipeline and the outer side wall of the ash inlet hopper (204), and an air inlet disc type valve (302) is arranged on the outer side wall of the air inlet pipe (301).

3. The negative pressure blowback large bag-type dust collector according to claim 1, wherein: and a plurality of spray heads are arranged on the outer side wall of the blowback spray pipe (503).

4. The negative pressure blowback large bag-type dust collector according to claim 1, wherein: a splitter plate (205) is arranged at the bottom of the interior of the dust removal chamber (201).

5. The negative pressure blowback large bag-type dust collector according to claim 1, wherein: the other end of the conveyor (6) is communicated with a receiving bin (7).

6. The negative pressure blowback large bag-type dust collector according to claim 1, wherein: the bottoms of the outer side walls of the bag-type dust collector units (102) are provided with brackets (101).