CN215505993U

CN215505993U - Bag-type dust collector

Info

Publication number: CN215505993U
Application number: CN202122034252.4U
Authority: CN
Inventors: 解毓朝; 王长鑫
Original assignee: Guizhou Xinghe Environmental Technology Co ltd
Current assignee: Guizhou Xinghe Environmental Technology Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-01-14
Anticipated expiration: 2031-08-26

Abstract

The application relates to the technical field of air pollution treatment equipment, and particularly discloses a bag-type dust collector which comprises an upper box body, a middle box body and an ash collecting hopper, wherein the upper box body is arranged above the middle box body, the upper box body is connected with the middle box body through a pattern plate, a bag-type dust chamber is arranged at the upper part of the middle box body, and a settling chamber is arranged at the lower part of the middle box body; the bag-type dust chamber is internally provided with a plurality of groups of filter bags and cage frames, and the top of the settling chamber is communicated with the bottom of the bag-type dust chamber; the side wall of the settling chamber is provided with a gas inlet, and the middle of the settling chamber is provided with an adjustable baffle. According to the utility model, the dust-containing gas is subjected to gravity settling on large-particle dust before entering the bag-type dust removal chamber, and the dust is further settled and guided in the settling chamber through the baffle plate, so that the gravity settling of the dust is utilized, the energy is saved, the environment is protected, meanwhile, the washing of the dust on the bag is reduced, and the service life of the bag is prolonged.

Description

Bag-type dust collector

Technical Field

The utility model relates to the technical field of air pollution treatment equipment, in particular to a bag-type dust remover.

Background

The process gas is dedusted before being discharged to the atmosphere. The pulse bag-type dust collector generally comprises an upper box body, a middle box body, an ash bucket and the like, and is of a chamber structure. When the dust-collecting type dust collector works, dust-containing gas enters the dust hopper from the air inlet duct, dust particles are turned along with air flow and upwards enter the middle box body, dust is accumulated on the outer surface of the filter bag, and the filtered gas enters the upper box body to the clean gas collecting pipe-the exhaust duct and is exhausted to the atmosphere through the exhaust fan. The ash cleaning process is to cut off the air duct at the clean air outlet of the chamber to make the cloth bag in the chamber in a state of no air flow passing through. Then, a pulse valve is opened to carry out pulse blowing ash removal by using compressed air, and dust stripped from the filter bag after blowing is settled to an ash bucket. The pulse bag-type dust collector has the advantages of strong dust cleaning capacity, high dust removing efficiency, low emission concentration, small air leakage rate, less energy consumption, less steel consumption, small occupied area, stable and reliable operation, good economic benefit and the like, and is widely used in boilers and industrial production.

However, because the filter bag in the bag-type dust collector belongs to consumables and needs to be replaced at variable time, and the replacement of the filter bag also needs to remove the cage in the filter bag, the workload is large, so that the bag-type dust collector which can reduce the washing of dust to the bag and prolong the service life of the bag is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a semi-dry absorption tower, which is high in efficiency and energy-saving and can prolong the service life of a cloth bag.

The bag-type dust collector comprises an upper box body, a middle box body, a dust collecting hopper and a dust cleaning device; the upper box body is fixed above the middle box body, and the upper box body is connected with the middle box body through a pattern plate; the ash removal device comprises an air bag, an electromagnetic pulse valve and an injection pipe; the upper part of the middle box body is a cloth bag dust removal chamber, and the lower part of the middle box body is a settling chamber; the bag-type dust removal chamber is internally provided with a plurality of groups of filter bags and cage frames, the pattern plate at the top of the bag-type dust removal chamber is provided with pattern plate holes which are arranged in an array manner and used for fixing the dust removal filter bags and the cage frames, and the number of the pattern plate holes is equal to that of the filter bags and the cage frames; the top of the settling chamber is communicated with the bottom of the cloth bag dust removal chamber; the side wall of the settling chamber is provided with a gas inlet, and the middle of the settling chamber is provided with a baffle.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. According to the technical scheme, the settling chamber is arranged at the lower part of the bag-type dust removing chamber, the gas inlet is formed in the settling chamber, large-particle dust is subjected to gravity settling before entering the bag-type dust removing chamber, the angle-adjustable baffle is arranged in the middle of the settling chamber, the direction of gas flow is changed, the dust inertia is large, the dust cannot change along with the gas, the dust collides with the baffle and loses the kinetic energy of continuous flying, the dust is settled in the dust collecting hopper below, the energy is saved, the environment is protected, the dust is settled by the gravity of the dust, the washing of the bag by the dust is reduced, and the service life of the bag is prolonged.

The first preferred scheme is as follows: as a further optimization of the basic scheme, the baffle is an angle-adjustable baffle and is fixed by a support frame, the side edge of the baffle is welded on one end of the support frame, the other end of the support frame is connected with a motor fixed on the side wall of the settling chamber, and the input end of the motor is electrically connected with the output end of the controller; when the dust removal device is in normal dust removal work, the vertical inclination angle of the baffle plate to the opposite direction of the gas inlet is 20-30 degrees, and the baffle plate is used for preliminarily settling dust in the gas and guiding the flow; when the cloth bag is blown, in order to reduce resistance, the motor is firstly controlled by the controller to drive the supporting rod to rotate, the baffle is adjusted to be in a vertical state, and then the electromagnetic pulse valve is started to blow the clean cloth bag.

The preferred scheme II is as follows: as a further optimization of the basic scheme, the upper box body is arranged at the top of the bag-type dust collector, and an openable upper cover plate is arranged above the upper box body, so that the filter bag can be conveniently replaced at the later stage; and a purified gas outlet is formed in the side surface of the upper box body and used for discharging purified gas.

The preferable scheme is three: as a further optimization of the basic scheme, a plurality of injection pipes which are distributed in parallel are fixed on the bottom plane of the upper box body, one injection pipe is assembled at the top of each row of filter bags, the lower side of each injection pipe is provided with an injection port which is opposite to the center of each filter bag, each injection pipe is provided with an electromagnetic pulse valve on the outer side of the upper box body and communicated with the air bag, and the input end of the electromagnetic pulse valve is electrically connected with the output end of the controller; when in dust removal, the electromagnetic pulse valves are opened through the controller, compressed air passes through the electromagnetic pulse valves in an extremely short time in sequence, and air which is several times of the jet air quantity is guided to enter the filter bag through the jetting ports on the jetting pipes to form air waves, so that the filter bag generates sharp expansion and impact vibration from the bag opening to the bottom, a strong dust removal effect is caused, and dust on the filter bag is shaken off.

The preferable scheme is four: as a further optimization of the basic scheme, the U-shaped pressure gauge is connected to the outer portion of the bag dust removal chamber and used for tracking the air pressure in the bag dust removal chamber in real time.

The preferable scheme is five: as a further optimization of the basic scheme, the side wall of the lower end of the settling chamber is provided with an inspection hole for overhauling and observing the dust removal chamber.

The preferable scheme is six: as a further optimization of the basic scheme, the dust collecting hopper is fixed right below the settling chamber and communicated with the settling chamber for collecting and storing dust for a short time; the bottom end of the ash collecting hopper is fixed with an ash discharging valve used for sealing and discharging ash from the ash collecting hopper; the base support is arranged around the dust collecting hopper and used for fixedly supporting the whole bag-type dust collector.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a partial side view of a settling chamber of an embodiment of the present invention;

fig. 3 is a schematic view of a card according to an embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: 1. an upper box body; 2. a cloth bag dust chamber; 3. a settling chamber; 4. a dust collecting hopper; 5. a pattern plate; 6. a pattern hole; 7. a filter bag; 8. a baffle plate; 9. a gas inlet; 10. a purified gas outlet; 11. air bags; 12. an electromagnetic pulse valve; 13. a blowing pipe; 14. a blowing port; 15. a support frame; 16. a motor; 17. a control instrument; 18. a U-shaped pressure gauge; 19. an inspection opening; 20. an ash discharge valve; 21 a base support.

The examples are substantially as shown in figures 1 to 3: the bag-type dust collector comprises an upper box body 1, a middle box body, an ash collecting hopper 4 and an ash cleaning device; the upper box body 1 is welded above the middle box body, and the upper box body is connected with the middle box body through a pattern plate 5; the ash removal device comprises an air bag 11, an electromagnetic pulse valve 12 and an injection pipe 13; the upper part of the middle box body is a cloth bag dust chamber 2, and the lower part is a settling chamber 3; a plurality of groups of filter bags 7 and cage frames are arranged in the bag dust removal chamber 2, flower plate holes 6 which are arranged in an array mode are formed in a flower plate 5 at the top of the bag dust removal chamber 2 and used for fixing the filter bags 7 and the cage frames, and the number of the flower plate holes 6 is equal to that of the filter bags 7 and the cage frames; the top of the settling chamber 3 is communicated with the bottom of the cloth bag dust removal chamber 2; the side wall of the settling chamber 3 is provided with a gas inlet 9, and the middle part is provided with a baffle 8.

The baffle 8 is an angle-adjustable baffle and is fixed by a support frame 15, the side edge of the baffle 8 is welded at one end of the support frame 15, the other end of the support frame 15 is connected and fixed on an output shaft of a motor 16 on the side wall of the settling chamber 3, and the control signal input end of the motor 16 is electrically connected with the output end of a controller 17; when the dust removal device is in normal dust removal work, the vertical inclination angle of the baffle plate to the opposite direction of the gas inlet is 20-30 degrees, and the baffle plate is used for preliminarily settling dust in the gas and guiding the flow; when the cloth bag is blown, in order to reduce resistance, the motor is firstly controlled by the controller to drive the supporting rod to rotate, the baffle is adjusted to be in a vertical state, and then the electromagnetic pulse valve is started to blow the clean cloth bag. The quantity of baffle 8 and the setting of angle specifically should be according to the gaseous parameter design of dirty gas, and is high at dirty gas dust content, and when the flow is big, can set up the baffle of two and above quantities, are parallel to each other between the baffle 8 this moment to set up crisscross hole on adjacent baffle, be convenient for dredge the air current.

The upper box body 1 is welded at the top of the bag-type dust collector, an openable upper cover plate is arranged above the upper box body 1, the side edge of the upper box body is connected with the upper cover plate through a hinge shaft hinge, and the upper box body is opened and closed through the hinge shaft, so that a filter bag can be conveniently replaced at the later stage; the side of the upper box body 1 is provided with a purified gas outlet 10 for discharging purified gas.

The bottom plane of the upper box body 1 is fixed with a plurality of injection pipes 13 which are distributed in parallel, the top of each row of filter bags is provided with one injection pipe 13, the lower side of each injection pipe 13 is provided with an injection port 14 which is opposite to the center of each filter bag, one end of each injection pipe 13, which is positioned at the outer side of the upper box body 1, is fixedly connected with an electromagnetic pulse valve 12, an air bag 11 which is vertical to each injection pipe 13 is fixedly connected under each electromagnetic pulse valve 12, the control signal input end of each electromagnetic pulse valve 12 is electrically connected with the output end of a controller 17, and the controller 17 controls the electromagnetic pulse valves 12 to be opened and closed.

Wherein, the bag dust chamber 2 is externally connected with a U-shaped pressure gauge 18 for tracking the air pressure in the bag dust chamber 2 in real time.

Wherein, the lower end side wall of the settling chamber 3 is provided with an inspection opening 19 for overhauling and observing the dust removal chamber.

The dust collecting hopper 4 is welded right below the settling chamber 3, is communicated with the settling chamber 3 and is used for collecting and storing dust for a short time; the bottom end of the ash collecting hopper 4 is fixed with an ash discharging valve 20 which is used for sealing and discharging ash from the ash collecting hopper 4; the base support 21 is arranged around the dust collecting hopper 4 and is used for fixedly supporting the whole bag-type dust collector.

The working principle of the utility model is as follows: during normal dust removal work, dust-containing gas enters the settling chamber 2 through the gas inlet 9, coarse dust directly falls into the dust collecting hopper 4, part of dust collides with the baffle 8 along with the gas flow, loses the kinetic energy of continuous flying, cannot change the direction along with the gas, and settles into the dust collecting hopper 4 below, the gas turns upwards through the baffle 8 and enters the cloth bag dust removing chamber 2, the dust is accumulated on the outer surface of the filter bag, and the filtered gas enters the upper box body through the pattern plate holes 6 arranged in an array on the pattern plate 5 and is discharged through the clean gas outlet 10. Along with the continuous proceeding of filtering and dust removal, dust accumulation on the filter bag causes that when the resistance reaches a certain value, the filter bag needs to be cleaned, when the air injection is used for cleaning dust, the air purification outlet is closed, meanwhile, the motor 16 is rotated through the controller 17, the baffle 8 is adjusted to be vertical, the resistance is reduced, the dust of the blowing cloth bag can conveniently fall into the dust collecting hopper 4 directly, then the electromagnetic pulse valve 12 is opened, compressed air is sprayed into the filter bag 7 through a spraying opening on a spraying pipe in a very short time, so that the filter bag 7 generates violent expansion and impact vibration from the bag opening to the bottom, dust on the outer side of the filter bag 7 is shaken off to achieve the purpose of dust removal, after the dust removal is finished, the electromagnetic pulse valve 12 is closed through the controller 17, the motor 16 is rotated, the baffle 8 is driven to vertically incline by 20-30 degrees in the direction opposite to the gas inlet, and the gas inlet and the gas outlet are opened to recover the normal dust removal work; the programmable controller can automatically control the exhaust valve, the electromagnetic pulse valve, the ash discharging valve and the like, and the ash removing time can be set according to the resistance to reach a specified value, or can be set for a fixed time to remove ash, or can be manually controlled to remove ash.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The bag-type dust collector comprises an upper box body (1), a middle box body, a dust collecting hopper (4) and a dust removing device, wherein the upper box body (1) is arranged above the middle box body, the upper box body is connected with the middle box body through a pattern plate (5), the dust removing device comprises a gas bag (11), an electromagnetic pulse valve (12) and a jetting pipe (13), and the bag-type dust collector is characterized in that a bag-type dust removing chamber (2) is arranged at the upper part of the middle box body, and a settling chamber (3) is arranged at the lower part of the middle box body; a plurality of groups of filter bags (7) and cage frames are arranged in the bag dust removal chamber (2), flower plate holes (6) are arranged on a flower plate (5) at the top of the bag dust removal chamber (2) in an array manner, and the number of the flower plate holes (6) is equal to that of the filter bags (7) and the cage frames; the top of the settling chamber (3) is communicated with the bottom of the cloth bag dust removing chamber (2); the side wall of the settling chamber (3) is provided with a gas inlet (9), and the middle part is provided with a baffle (8).

2. The bag-type dust collector according to claim 1, wherein the baffle (8) is an angle-adjustable baffle and is fixed on the side wall of the settling chamber (3) by a support frame (15).

3. The bag-type dust collector according to claim 1, wherein an openable upper cover plate is arranged above the upper box body (1), and a clean air outlet (10) is arranged on the side surface of the upper box body (1).

4. The bag-type dust collector of claim 1, wherein the injection pipes (13) are distributed in parallel at the bottom of the upper box body (1), and the lower ends of the injection pipes (13) are provided with injection ports (14) opposite to the centers of the filter bags; an electromagnetic pulse valve (12) is arranged on the outer side of the upper box body (1) of each blowing pipe (13) and is communicated with the air bag (11), and the input end of the electromagnetic pulse valve (12) is electrically connected with the output end of the control instrument (17).

5. The bag-type dust collector according to claim 1, characterized in that a U-shaped pressure gauge (18) is connected to the outside of the bag-type dust chamber (2).

6. Bag-type dust collector according to claim 1, characterized in that the lower side wall of the settling chamber (3) is provided with an inspection opening (19).

7. The bag-type dust collector according to claim 1, wherein the dust collecting hopper (4) is fixed right below the settling chamber (3) and communicated with the settling chamber (3); the bottom end of the ash collecting hopper (4) is fixed with an ash discharging valve (20); a base bracket (21) is arranged around the dust collecting hopper (4).