CN211411337U

CN211411337U - Spiral inner cavity of bag-type dust collector

Info

Publication number: CN211411337U
Application number: CN201921912108.2U
Authority: CN
Inventors: 谢宗卫
Original assignee: Guangdong Power Grid Co Ltd; Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-09-04
Anticipated expiration: 2029-11-07

Abstract

The embodiment of the utility model discloses a spiral inner cavity of a bag-type dust collector, which comprises a bag-type dust collector and a primary filter device arranged on the inner wall of the dust collector, wherein the primary filter device comprises a cylindrical separating section with an upper section inner wall and an ash discharging section with a lower section inner wall in a funnel shape, the walls of the separating section and the ash discharging section are internally provided with a spiral inner cavity with a spiral downward direction, the rotating radius of the spiral inner cavity in the ash discharging section is continuously reduced from top to bottom, the inner wall of the ash discharging section is provided with an outlet communicated with the bottom of the spiral inner cavity, smoke gas entering the spiral inner cavity from the air inlet pipe in the tangential direction rotates along the spiral inner cavity, the gas and particles are separated by centrifugal force, the particles are discharged from the outlet and then fall into an ash hopper below, the gas flow is discharged from the outlet and then forms an upward internal rotating gas flow carrying partial dust at the axle center of the ash discharging section, the integral filtering efficiency of the bag-type dust collector is improved.

Description

Spiral inner cavity of bag-type dust collector

Technical Field

The embodiment of the utility model provides a relate to dust collecting equipment technical field, concretely relates to spiral inner chamber of sack cleaner.

Background

The bag-type dust collector is a dry dust collector, which is suitable for collecting fine and dry non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, the dust-containing gas is filtered by the filtering action of the fiber fabric, when the dust-containing gas enters the bag-type dust remover, the dust with large particles and large specific gravity falls into the dust hopper due to the sedimentation of the gravity, and when the gas containing fine dust passes through the filter material, the dust is blocked, so that the gas is purified.

Present sack cleaner is direct to filter smoke and dust gas through the sack, the wearing and tearing of sack are not only accelerated easily to the dust granule in the smoke and dust gas, and can cause the burden increase of sack, increase the deashing number of times and the change frequency of sack, thereby lead to the use cost to increase, and because smoke and dust gas directly gets into in the sack cleaner through the air inlet, not only gaseous flow disorder in the sack cleaner, the wearing and tearing of sack have been accelerated, and the vortex easily produces, lead to the interior local temperature of sack cleaner to reduce, cause the sack dewfall, further influence the life and the filtration efficiency of sack.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a spiral inner chamber of sack cleaner is through the inside elementary filter equipment who is equipped with spiral inner chamber of installation in the sack cleaner to solve among the prior art because the sack that solid particle is more in the smoke and dust gas and lead to seriously wear and the problem that sack life reduces.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: the dust remover comprises a bag-type dust remover and a primary filtering device arranged on the inner wall of the dust remover, wherein the primary filtering device comprises a separation section with an upper section inner wall in a cylindrical shape and an ash discharging section with a lower section inner wall in a funnel shape, spiral downward spiral inner cavities are arranged in the walls of the separation section and the ash discharging section, an air inlet pipe communicated with the spiral inner cavities is arranged on the outer side wall of the separation section along the tangential direction of the spiral inner cavities, the rotating radius of the spiral inner cavities in the ash discharging section is continuously reduced from top to bottom, an outlet communicated with the bottom of the spiral inner cavities is arranged on the inner wall of the ash discharging section, and an ash discharging port is arranged at the bottom of the;

the top of separation section is equipped with the gas vent, just install in the gas vent and be the blast pipe that leaks hopper-shaped, install air distribution plate and rectification grid tray from top to bottom in proper order on the inner wall of blast pipe.

Further, a vibration motor is installed on the outer side wall of the ash discharging section.

Furthermore, an ash bucket is installed at the bottom of the bag-type dust collector, and an ash bucket valve is installed on the inner wall of the top end of the ash bucket.

Further, the outlet is arranged along the tangential direction of the inner wall of the ash discharge section.

Further, the rectification grid plate is arranged at the bottom in the exhaust pipe, and the air distribution plate is arranged at the top in the exhaust hanger.

The utility model discloses an embodiment has following advantage:

(1) the smoke dust gas is introduced into the spiral inner cavity of the primary filtering device through the gas inlet pipe, the smoke dust gas entering the spiral inner cavity rotates along the spiral inner cavity, and moves from the separation section to the ash discharge section from top to bottom, the particles in the smoke gas move to the outer side under the action of centrifugal force and contact with the wall of the chamber, the particles lose inertia force after contacting with the wall of the chamber, fall along the wall of the chamber by the momentum of the inlet speed and the self gravity, are discharged from the ash discharge section through the outlet at the bottom and fall into an ash hopper through an ash discharge port, after the airflow which rotates and descends reaches the ash discharging section, the tangential speed of the airflow is continuously increased along with the continuous reduction of the rotating radius, and when the airflow is finally discharged from the outlet at the bottom, the airflow rotates upwards along the axis of the ash discharge section to form a rising internal rotation airflow, and when the rising internal rotation airflow reaches the cloth bag, the unfiltered dust in the internal rotation airflow is further filtered by the cloth bag. The primary filtering device arranged in the bag-type dust collector is used for primarily filtering the particles of the smoke dust gas, so that the abrasion degree and the load of the bag are greatly reduced, the times of replacing the bag are reduced, the use cost is saved, and the filtering efficiency of the bag-type dust collector is improved;

(2) when the rotating internal rotation airflow passes through the rectification grid plate in the exhaust pipe, the rotating airflow is changed into vertically upward airflow, so that dust raising caused by the rotating airflow is avoided, the abrasion to the cloth bag is increased, the filtering efficiency of the cloth bag dust remover is improved, and the service life of the cloth bag is prolonged;

(3) because of the internal rotation air current by the narrower row of ash section upward movement in bottom, the internal rotation air current is more concentrated in the center department of sack cleaner, through installing the grid plate of cloth above the rectification, make through the air current homodisperse of rectification back but more concentrated to make the degree of wear and the load of each sack tend to unanimity as far as, not only improved the filtration efficiency of sack in the sack cleaner, and avoided because of the degree of wear and the different problem that the sack that leads to of load change frequency increase and regular maintenance's interval is difficult to grasp of each sack.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the exhaust pipe structure of the present invention.

In the figure:

1-bag dust collector; 2-a primary filtration unit; 3-a spiral inner cavity; 4, an air inlet pipe; 5-an outlet; 6-ash discharge port; 7-an exhaust port; 8-an exhaust pipe; 9-air distribution plate; 10-a rectifying grid plate; 11-a vibration motor; 12-ash bucket; 13-ash bucket valve;

201-separation section; 202-ash discharge section.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the utility model provides a spiral inner chamber of a bag-type dust collector, in order to realize the above purpose, the utility model discloses an embodiment provides following technical scheme: include sack cleaner 1 and install elementary filter equipment 2 on 1 inner wall of dust remover, elementary filter equipment 2 be cylindric disengagement section 201 and hypomere inner wall and be row ash section 202 that leaks hopper-shaped including the upper segment inner wall, just be equipped with spiral decurrent spiral inner chamber 3 in disengagement section 201 and row ash section 202's the wall, install the intake pipe 4 of intercommunication spiral inner chamber 3 along spiral inner chamber 3's tangential direction on disengagement section 201's the lateral wall, just the radius of rotation of spiral inner chamber 3 in row ash section 202 constantly reduces from top to bottom, be equipped with the export 5 of intercommunication spiral inner chamber 3 bottom on row ash section 202's the inner wall, the bottom of row ash section 202 is equipped with row ash mouth 6.

Specifically, the outside smoke and dust gas enters the spiral inner cavity 3 through the air inlet pipe 4 along the tangential direction of the spiral inner cavity 3 of the separation section 201, the smoke and dust gas flow entering the spiral inner cavity 3 rotates, and moves from the separation section 201 to the dust discharge section 202 from top to bottom, particles in the smoke and dust gas move to the outer side under the action of centrifugal force and contact with the cavity wall, the particles lose inertia force after contacting with the cavity wall, fall along the cavity wall by the momentum of the inlet speed and the gravity of the particles, and are discharged out of the dust discharge section 202 through the outlet 5 and the dust discharge port 6 at the bottom. After the rotating and descending airflow reaches the ash discharge section 202, the tangential speed of the airflow is continuously increased along with the continuous reduction of the rotating radius, and finally when the airflow is discharged from the outlet 5 at the bottom, the airflow rotates upwards along the axis of the ash discharge section 202 to form ascending internal rotation airflow, and when the ascending internal rotation airflow reaches the cloth bag, the unfiltered dust in the internal rotation airflow is further filtered by the cloth bag.

The primary filtering device 2 installed in the bag-type dust collector 1 is used for primarily filtering the particles of the smoke dust gas, so that the abrasion degree and the load of the bag are greatly reduced, the replacement times of the bag are reduced, the use cost is saved, and meanwhile, the filtering efficiency of the bag-type dust collector 1 is also improved.

In addition, the top of separation section 201 is equipped with gas vent 7, just install in the gas vent 7 and be funnel-shaped blast pipe 8, install air distribution plate 9 and rectification grid tray 10 from top to bottom in proper order on the inner wall of blast pipe 8.

Rotatory rising of interior whirl air current can increase the wearing and tearing of sack, reduces the life of sack, and can lead to adnexed dust on the sack to drop and cause the raise dust, reduces the filtration efficiency of sack, consequently, the installation has a plurality of rectification grid trays 10 that cut off in blast pipe 8, is separated into the vertical ascending air current of stranded when rotatory interior whirl air current passes through rectification grid 10.

And, the internal rotation air current that moves from bottom to top concentrates on the center of sack cleaner 1, can make sack cleaner 1 center department's sack wearing and tearing degree and load increase, and the air current after the rectification is when porous sack board 9, but the even dispersion of air current concentrated after the sack board 9 messenger is rectified, thereby make the wearing and tearing degree and the load of each sack tend towards unanimity as far as possible, not only improved the filtration efficiency of sack in the sack cleaner 1, and avoided the problem that the interval of sack replacement frequency increase and periodic maintenance that leads to because of the wearing and tearing degree and the load difference of each sack is difficult to grasp.

Preferably, the outer side wall of the ash discharge section 202 is provided with a vibration motor 11, and the funnel-shaped ash discharge section 202 is vibrated by the vibration motor 11, so that the ash is removed by the bag-type dust collector 1

Preferably, the bottom of the bag-type dust collector 1 is provided with a dust hopper 12, the inner wall of the top end of the dust hopper 12 is provided with a dust hopper valve 13, the dust hopper 12 is closed through the dust hopper valve 13, and the dust in the dust hopper 12 is prevented from being curled up by the rising swirling airflow.

Preferably, the outlet 5 is arranged tangentially to the inner wall of the ash discharge section 202.

Preferably, the rectification grid 10 is installed at the bottom in the exhaust pipe 8, the air distribution plate 9 is installed at the top in the exhaust hanger 8, and a space enough for gas flow distribution is left between the rectification grid 10 and the air distribution plate 9.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A spiral inner cavity of a bag-type dust remover comprises a bag-type dust remover (1) and a primary filtering device (2) arranged on the inner wall of the bag-type dust remover (1), it is characterized in that the primary filtering device (2) comprises a separation section (201) with a cylindrical upper section inner wall and an ash discharge section (202) with a funnel-shaped lower section inner wall, and the walls of the separation section (201) and the ash discharge section (202) are internally provided with a spiral inner cavity (3) which is downward spirally, an air inlet pipe (4) communicated with the spiral inner cavity (3) is arranged on the outer side wall of the separation section (201) along the tangential direction of the spiral inner cavity (3), and the rotating radius of the spiral inner cavity (3) in the ash discharging section (202) is continuously reduced from top to bottom, an outlet (5) communicated with the bottom of the spiral inner cavity (3) is formed in the inner wall of the ash discharge section (202), and an ash discharge opening (6) is formed in the bottom of the ash discharge section (202);

the top of separation section (201) is equipped with gas vent (7), just install in gas vent (7) and be funnel-shaped blast pipe (8), install air distribution plate (9) and rectification grid tray (10) from top to bottom in proper order on the inner wall of blast pipe (8).

2. The spiral inner cavity of the bag-type dust collector as claimed in claim 1, wherein the outer side wall of the dust discharging section (202) is provided with a vibration motor (11).

3. The spiral inner cavity of the bag-type dust collector according to claim 1, wherein an ash bucket (12) is installed at the bottom of the bag-type dust collector (1), and an ash bucket valve (13) is installed on the inner wall of the top end of the ash bucket (12).

4. The spiral inner chamber of a bag-type dust collector according to claim 1, wherein the outlet (5) is arranged along a tangential direction of an inner wall of the dust discharging section (202).

5. The spiral inner chamber of a bag-type dust collector as claimed in claim 1, wherein the rectifying grid (10) is installed at the bottom inside the exhaust pipe (8), and the air-distribution plate (9) is installed at the top inside the exhaust pipe (8).