CN213101238U - Off-line back-blowing ash removal system capable of realizing on-line pulse blowing dust remover - Google Patents
Off-line back-blowing ash removal system capable of realizing on-line pulse blowing dust remover Download PDFInfo
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- CN213101238U CN213101238U CN202021429997.XU CN202021429997U CN213101238U CN 213101238 U CN213101238 U CN 213101238U CN 202021429997 U CN202021429997 U CN 202021429997U CN 213101238 U CN213101238 U CN 213101238U
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Abstract
The utility model discloses an off-line back-blowing ash removal system of an online pulse blowing dust remover, which relates to the technical field of ash removal of a filter bag dust remover, and comprises a back-blowing fan, a connecting pipeline, a dust removal box body and a back-blowing trolley, wherein the back-blowing fan is arranged at the top of the dust removal box body; the back-blowing trolley is arranged at the bottom of the dust removal box body and is connected with a driving device for driving the back-blowing trolley to move; the bottom of the dust removal box body is provided with a plurality of through holes, and each through hole is used for being communicated with one filter bag to be cleaned; the bottom of the back-blowing trolley is provided with a back-blowing device, and the back-blowing device is used for back-blowing and cleaning part of the filter bags to be cleaned. The utility model discloses under the condition of whole online filtration, realize a small part off-line blowback, both satisfied the filtration amount of wind and realized the advantage of off-line blowback again.
Description
Technical Field
The utility model relates to a bag dust remover deashing technical field especially relates to an ability online pulse jetting dust remover realizes off-line blowback deashing system.
Background
The dust removal of the filter bag dust collector is the normal working state of the filter bag dust collector, namely the filtering state, and the mechanism of interception, collision, diffusion, screening, static electricity, hooking and the like of particles and filter bags is utilized, so that the effect of intercepting the particles for dust removal is realized, the gaps of fibers of the filter bags can not intercept the particles below micron level, so that higher dust removal efficiency is realized.
At present, large dust collectors basically adopt modes such as online pulse blowing dust removal, whole unit offline blowback dust removal and the like.
Online pulse blowing ash removal: and opening the electromagnetic pulse valve to enable the pulse compressed air flow to be sprayed out to drain peripheral air into the filter bag, so that the filter bag is instantly in a positive pressure state, and particles on the filter bag immediately fall off. Therefore, the online pulse blowing is the state that the filter bag is instantaneously positively pressurized under the action of the pulse valve when the filter bag is always in a filtering state (online), and is called online pulse blowing ash removal. The advantages are that: large effective filtering area, low cost and high dust-cleaning strength. The disadvantages are as follows: the processing and mounting precision is high (the error between the centers of the nozzle and the filter bag is less than 0.5mm), and the filter bag is excessively aged due to the fact that the centering distance between the nozzle and the filter bag opening is difficult to guarantee and the filter bag opening is washed by compressed air pulse airflow at high strength; in addition, the precision of the centering distance is not enough, the air drainage quantity is not enough, so that the ash removal pressure deviation between the filter bag opening and the bottom of the filter bag is large, the ash removal is excessively performed at the near part of the filter bag opening, the ash removal is not performed at the far part, the filter bag has uneven filtering air speed and excessively high air speed at the filter bag opening, the abrasion is serious, the dust emission concentration is higher, meanwhile, the filtering resistance is larger, and finally, the dust removal efficiency is reduced; and the problems of short service life of the filter bag, uneven ash removal, uncontrollable ash removal strength, instantaneous dust re-adsorption after ash removal and the like exist.
Off-line pulse blowing ash removal: after the filtering state of the filter bag is closed, the instantaneous positive pressure state of the filter bag is enabled through the action of the pulse valve, and the state is called as off-line pulse blowing ash removal. The advantages are that: the ash removal strength is high (the concentration of the discharged particles is higher along with the instantaneous pulse injection), and the dust is prevented from being adsorbed again by the filter bag; the disadvantages are as follows: the ineffective filtering area is large and the cost is high. There are other disadvantages of pulse-jet ash removal as well.
Off-line back flushing and ash removing: because the back blowing is supplied by the high-pressure centrifugal fan, pulse airflow can not be formed to guide peripheral air, and the traditional back blowing ash removal system has to be off-line and the rear can reach an ideal ash removal condition. The principle is that after the filtering state of the filter bag is closed, the filter bag is in a positive pressure state under the action of a back blowing fan, and the ash removal purpose is achieved. The advantages are that: the dust removal strength is adjustable, dust is prevented from being adsorbed again, the processing precision is low, and the service life of the filter bag is long. The disadvantages are as follows: the ineffective filtering area is large and the cost is high.
Therefore, it is desirable to provide an off-line blowback ash removal system for an on-line pulse-jet dust remover, so as to solve the above problems in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can realize off-line blowback deashing system at online pulse jetting dust remover to solve the problem that above-mentioned prior art exists, under the whole online filterable circumstances, realize a small part off-line blowback, both satisfied the filtration amount of wind and realized the advantage of off-line blowback.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a can realize off-line blowback deashing system to online pulse jetting dust remover, including blowback fan, connecting tube, dust removal box and blowback dolly, the blowback fan is installed in the top of dust removal box, the air outlet of blowback fan with the first end of connecting tube communicates, the second end of connecting tube stretches into in the dust removal box, and with the top of blowback dolly communicates; the back blowing trolley is arranged at the bottom of the dust removal box body and is connected with a driving device for driving the back blowing trolley to move; the bottom of the dust removal box body is provided with a plurality of through holes, and each through hole is used for being communicated with one filter bag to be cleaned; and a back blowing device is arranged at the bottom of the back blowing trolley and is used for back blowing and ash removal on part of the filter bags to be subjected to ash removal.
Preferably, the connecting pipes comprise an outer pipe, an inner pipe and an intermediate pipe; the external pipeline is arranged on the outer side of the top of the dust removal box body, one end of the external pipeline is communicated with the top end of the middle pipeline through a control valve, and the other end of the external pipeline is connected with an air outlet of the back blowing fan; the internal pipeline is arranged in the dust removal box body, one end of the internal pipeline is communicated with the bottom end of the intermediate pipeline, and the other end of the internal pipeline is communicated with the back flushing trolley;
the internal pipeline comprises a first pipeline and a second pipeline, the top end of the first pipeline is rotatably connected with the bottom end of the middle pipeline, one end of the second pipeline is rotatably connected with the bottom end of the first pipeline, and the other end of the second pipeline is rotatably connected with the top of the blowback trolley; the middle part of the second pipeline is a flexible compensating pipe.
Preferably, a cantilever device is arranged at the joint of the middle pipeline and the first pipeline; the cantilever device comprises a cantilever and a cantilever base, the cantilever base is arc-shaped, an H-shaped bearing is installed at the bottom end of the middle pipeline through an H-shaped bearing base, a rotating ring is arranged on the inner wall of the cantilever base, the outer diameter of the rotating ring is fixedly connected with the cantilever base, and the inner diameter of the rotating ring is arranged in a bearing groove of the H-shaped bearing and is in rotating connection with the H-shaped bearing; one end of the cantilever is fixedly connected with the outer wall of the cantilever base, and the other end of the cantilever is connected with the first pipeline through a tensioner.
Preferably, the middle pipelines and the inner pipelines are respectively provided with two groups, and the top ends of the two groups of middle pipelines are respectively connected with the outer pipelines;
the back flushing trolleys are two, the inner ends of the two back flushing trolleys are fixedly connected, and one ends of the two groups of internal pipelines far away from the middle pipeline are respectively and rotatably connected with the top of the outer end of one back flushing trolley; the bottom of the fixed connection part of the two back blowing trolleys is provided with a middle supporting wheel, and the outer ends of the two back blowing trolleys are connected with one driving device;
or one blowback trolley is arranged, one ends of the two groups of internal pipelines far away from the middle pipeline are respectively and rotatably connected with the tops of the two ends of the blowback trolley, a middle supporting wheel is arranged at the middle bottom of the blowback trolley, and the two ends of the blowback trolley are respectively connected with one driving device;
and a supporting wheel channel is arranged at the middle position of the inner bottom of the dust removal box body.
Preferably, the driving device comprises a servo motor, an output shaft of the servo motor is connected with a driving chain wheel, the driving chain wheel is connected with a driven chain wheel through a chain, the driving chain wheel and the driven chain wheel are respectively arranged at the front end and the rear end of the dust removal box body, and the driving chain wheel is close to the servo motor; the chain is fixedly connected with the back blowing trolley.
Preferably, the blowback trolley comprises an outer shell, a vent is arranged at the top end of the outer shell and used for being communicated with the second pipeline, and a guide plate is arranged below the vent;
a traction arm base is arranged at the outer end of the ventilation opening, a traction arm is arranged on the traction arm base, one end of the traction arm is rotatably connected with the traction arm base, a through hole is formed in the other end of the traction arm, and the chain penetrates through the through hole and is connected with the traction arm through a spring;
the track wheel is installed through the track wheel bearing frame on the draft arm base, the lateral wall of shell body is provided with the track, the track wheel is followed the track removes.
Preferably, a plurality of vertical shaft rods are arranged in the outer shell, the bottoms of the vertical shaft rods are fixedly connected with the bottom of the outer shell, the top of each vertical shaft rod is fixedly connected with the top of the outer shell through a fixing support, and the blowback device moves up and down along the vertical shaft rods;
two fixed supports are arranged in parallel, and the two fixed supports are connected with a rotating shaft through a rotating shaft bearing seat; one end of the rotating shaft is connected with one fixed support, and the other end of the rotating shaft penetrates through the other fixed support and is fixedly connected with the traction arm through a coupler; the fixed support is provided with a rotating arm, the top end of the rotating arm is fixedly connected with the rotating shaft, the bottom end of the rotating arm penetrates through the fixed support and is rotatably connected with a connecting rod, and one end of the connecting rod, which is far away from the rotating shaft, is rotatably connected with the back flushing device;
the bottom of the fixed support is provided with a limit groove, and the upper part of the rotating arm penetrates through the limit groove and swings in the limit groove.
Preferably, the back flushing device comprises a sealing body, and the sealing body comprises a lifting plate, a lifting pipe, a back flushing pressing plate and a spring blocking plate; the lifting plate is provided with a linear bearing, the linear bearing is connected with the vertical shaft rod in a vertical sliding manner, and one end of the connecting rod, which is far away from the rotating shaft, is rotatably connected with the top end of the lifting plate;
the lifting plate is provided with a plurality of through holes, each through hole is used for being communicated with the top end of one lifting pipe, the back-blowing pressing plate is fixed at the bottom end of the lifting pipe, and the middle part of the back-blowing pressing plate is provided with a through hole; the outer wall of the lifting pipe is provided with a spring plate, and two ends of the spring plate are respectively provided with one spring blocking plate;
and a plurality of through holes are formed in the bottom of the outer shell of the back flushing trolley and used for enabling the lifting pipe to pass through.
Preferably, the top of the lifting pipe is provided with a tension spring fixing flange which is fixedly connected with the bottom end of the lifting plate through a tension spring; the end part of the spring plate is connected with the spring plugging plate through a shaft pin, a spring is sleeved on the shaft pin, and two ends of the spring are respectively connected with the spring plate and the spring plugging plate.
Preferably, an adjusting plate is arranged in the back blowing pressing plate.
The utility model discloses for prior art gain following technological effect:
1. because only three rows of filter bags are sealed, the middle row of filter bags are subjected to dust removal, the dust removal pressure is adjustable, a dust layer on the surface of each filter bag is better ensured, the dust removal is more uniform, the dust removal efficiency is high, and more importantly, the dust removal efficiency is higher;
2. the whole unit of off-line back flushing is not needed, the construction cost is lower than that of the traditional off-line back flushing dust remover, and the unit filtering area is larger;
3. the pressure adjustable back blowing is adopted as the ash cleaning mode, the deformation strength of the filter bag is lower, so the service life of the filter bag is obviously prolonged and is at least improved by more than 1-2 times;
4. compressed air is adopted for pulse blowing, and the compressed air is sprayed out instantly to release volume so as to absorb heat and form condensation; and the utility model discloses a centrifugal fan is as the air supply, not high strength compression, and the relative high temperature dry gas source (like indoor, chimney etc.) can be drawn from in the entry air supply, so do not receive temperature variation and cause "dewfall" phenomenon in the blowback pipeline to stop aqueous gas to blow in the filter bag and lead to "sticking with paste the bag";
5. the structure is basically made of metal, so that the high-temperature resistance is higher, and the service life is longer;
6. the ash removal air source can not adopt compressed air, and the energy consumption is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of an off-line back-blowing ash-removing system of the on-line pulse blowing dust remover of the present invention;
FIG. 2 is a side view of the off-line back-blowing ash-removing system of the on-line pulse blowing dust remover of the present invention;
FIG. 3 is a schematic structural view of the blowback carriage of the present invention;
FIG. 4 is a side view of the blowback carriage of the present invention;
FIG. 5 is a side perspective view of the blowback carriage of the present invention;
fig. 6 is a schematic structural view of the sealing body of the present invention;
fig. 7 is a schematic structural view of the cantilever device of the present invention;
in the figure, 1 is a blowback fan, 2 is an external pipeline, 3 is a control valve, 4 is a dust removal box body, 5 is a cantilever device, 6 is a rotator, 7 is a tensioner, 8 is an internal pipeline, 9 is a flexible compensating pipe, 10 is a servo motor, 11 is a blowback trolley, 12 is a filter bag and a filter cage, 13 is a chain, 14 is a driven sprocket, 15 is a track, 16 is a rotator flange, 17 is a track wheel, 18 is a track wheel bearing seat, 19 is a traction arm, 20 is a coupler, 21 is a rotating shaft, 22 is a rotating shaft bearing seat, 23 is a guide plate, 24 is a sealing body, 25 is a lifting plate, 26 is an intermediate supporting wheel, 27 is an outer shell, 28 is a traction arm base, 29 is a rotating arm, 30 is a connecting rod, 31 is a vertical shaft rod, 32 is a linear bearing, 33 is a tension spring fixing flange, 34 is a lifting pipe, 35 is a spring plate, 36 is a spring, 37 is a spring blocking plate, 38 is a blowback pressing, 39 is a cantilever, 40 is an H-shaped bearing, 41 is an H-shaped bearing base, 42 is a rotating ring, and 43 is an intermediate duct.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Example one
As shown in fig. 1-7, this embodiment provides an off-line back-blowing ash removal system for an online pulse-jet dust remover, which includes a back-blowing fan 1, a connecting pipeline, a dust-removing box 4, and a back-blowing trolley 11, where the back-blowing fan 1 is installed at the top of the dust-removing box 4, an air outlet of the back-blowing fan 1 is communicated with a first end of the connecting pipeline, and a second end of the connecting pipeline extends into the dust-removing box 4 and is communicated with the top of the back-blowing trolley 11; the back flushing trolley 11 is arranged at the bottom of the dust removal box body 4, and the back flushing trolley 11 is connected with a driving device and used for driving the back flushing trolley 11 to move; the bottom of the dust removal box body 4 is provided with a plurality of through holes, and each through hole can be used for being communicated with a filter bag to be cleaned and a filter cage 12; and a back blowing device is arranged at the bottom of the back blowing trolley 11 and is used for back blowing and ash removal on part of the filter bags to be subjected to ash removal.
In this embodiment, the back-blowing fan 1 adopts a high-pressure centrifugal frequency conversion fan, and provides back-blowing air with a pressure of about 4Kpa as an ash removal air source; or other types of fans may be selected as desired.
In the present embodiment, the connecting pipes include an outer pipe 2, an inner pipe 8, and an intermediate pipe 43; the external pipeline 2 is arranged on the outer side of the top of the dust removal box body 4, one end of the external pipeline 2 is communicated with the top end of the middle pipeline 43 through a control valve 3, the control valve 3 is an electric or pneumatic butterfly valve, and the control valve 3 is fixedly connected with the external pipeline 2 and the middle pipeline 43 through flanges and bolts; the other end of the external pipeline 2 is connected with an air outlet of the back-blowing fan 1; the internal pipeline 8 is arranged in the dust removal box body 4, one end of the internal pipeline 8 is communicated with the bottom end of the middle pipeline 43, and the other end of the internal pipeline 8 is communicated with the blowback trolley 11.
Specifically, the inner pipe 8 comprises a first pipe and a second pipe, the top end of the first pipe is rotatably connected with the bottom end of the middle pipe 43, one end of the second pipe is rotatably connected with the bottom end of the first pipe, and the other end of the second pipe is rotatably connected with the top of the blowback trolley 11; the rotary joints are rotatably connected through a rotator 6, the rotator 6 is in the prior art, and the existing pipeline rotary connector such as a flange type rotary connector can be selected; the rotator 6 is connected with the pipeline and the top of the blowback trolley 11 through a rotator flange 16 by bolts.
The middle part of the second pipeline is a flexible compensating pipe 9, the flexible compensating pipe 9 is composed of a plurality of spring steel sheets, the spring steel sheets are connected through bolts, and two ends of the flexible compensating pipe 9 are connected with air pipes in a hoop connection mode and are used for being connected with the first pipeline and the blowback trolley 11; other flexible hoses can be selected as required by the flexible compensation pipe 9.
In this embodiment, the back-blowing air supply of the back-blowing trolley 11 during movement can be ensured by the rotary connection between the pipelines and the back-blowing trolley 11 and the arrangement of the flexible compensation pipe 9.
Further, a cantilever 5 is arranged at the joint of the intermediate pipeline 43 and the first pipeline; the cantilever device 5 comprises a cantilever 39 and a cantilever base, the cantilever base is arc-shaped, the middle pipeline 43 is welded and fixed with the dust removal box body 4, the bottom end of the middle pipeline is annularly provided with a plurality of H-shaped bearings 40 through an H-shaped bearing base 41, the inner wall of the cantilever base is provided with a rotating ring 42, the outer diameter of the rotating ring 42 is fixedly connected with the cantilever base into a whole, and the inner diameter of the rotating ring 42 is arranged in a bearing groove of the H-shaped bearing 40 and is rotationally connected with the H-shaped bearing 40; two H-shaped bearing bases 41 are arranged up and down, and two rotating rings 42 are correspondingly arranged. One end of the cantilever 39 is fixedly connected with the outer wall of the cantilever base, and the other end is connected with the first pipeline through the tensioner 7, so that the stress balance of the inner pipeline 8 during rotation can be ensured.
In this embodiment, two sets of the intermediate pipes 43 and the inner pipes 8 are provided, and the top ends of the two sets of the intermediate pipes 43 are connected to the outer pipe 2; two blowback trolleys 11 are arranged, the inner ends of the two blowback trolleys 11 are fixedly connected, and one ends of the two groups of internal pipelines 8, which are far away from the middle pipeline 43, are respectively and rotatably connected with the top of the outer end of one blowback trolley 11; the bottom of the fixed connection part of the two back blowing trolleys 11 is provided with a middle supporting wheel 26, and the outer ends of the two back blowing trolleys 11 are both connected with one driving device;
or one blowback trolley 11 is arranged, one ends of the two groups of internal pipelines 8 far away from the middle pipeline 43 are respectively and rotatably connected with the tops of the two ends of the blowback trolley 11, a middle supporting wheel 26 is arranged at the middle bottom of the blowback trolley 11, and the two ends of the blowback trolley 11 are both connected with one driving device;
in this embodiment, two blowback trolleys 11 are provided, and the inner ends of the two blowback trolleys 11 are fixedly connected through a connecting plate and a bolt; a supporting wheel channel is arranged at the middle position of the inner bottom of the dust removing box body 4, so that the middle supporting wheel 26 can conveniently move on the supporting wheel channel.
In this embodiment, the driving device includes a servo motor 10, an output shaft of the servo motor 10 is connected with a driving sprocket, the driving sprocket is connected with a driven sprocket 14 through a chain 13, the driving sprocket and the driven sprocket 14 are respectively disposed at the front end and the rear end of the dust removing box 4, and the driving sprocket is close to the servo motor 10; the chain 13 is fixedly connected with the back blowing trolley 11.
Specifically, the blowback trolley 11 comprises an outer shell 27, a vent is arranged at the top end of the outer shell 27 and used for being communicated with the second pipeline, and an arc-shaped guide plate 23 is fixed below the vent through a bolt; a traction arm base 28 is arranged at the outer end of the ventilation opening, a traction arm 19 is arranged on the traction arm base 28, one end of the traction arm 19 is rotatably connected with the traction arm base 28, a through hole is formed in the other end of the traction arm 19, and the chain 13 penetrates through the through hole and is connected with the traction arm 19 through a spring;
the track wheel 17 is installed on the base 28 of the traction arm through a track wheel bearing seat 18, a track 15 is arranged on the side wall of the outer shell 27, and the track wheel 17 moves along the track 15.
In this embodiment, two vertical shafts 31 are disposed in the outer housing 27, the bottom of each vertical shaft 31 is fixedly connected with the bottom of the outer housing 27, the top of each vertical shaft 31 is fixedly connected with the top of the outer housing 27 through a fixing support, and the blowback device moves up and down along the vertical shafts 31;
two fixed supports are arranged in parallel, and the two fixed supports are connected with a rotating shaft 21 through a rotating shaft bearing seat 22; one end of the rotating shaft 21 is connected with one of the fixed supports, and the other end of the rotating shaft passes through the other fixed support and is fixedly connected with the traction arm 19 through a coupler 20, specifically, the traction arm 19 can be connected with a traction shaft, and the traction shaft is fixedly connected with the rotating shaft 21 through the coupler 20; a rotating arm 29 is mounted on the fixed support, the top end of the rotating arm 29 is fixedly connected with the rotating shaft 21, the bottom end of the rotating arm passes through the fixed support and is rotatably connected with a connecting rod 30, and one end, far away from the rotating shaft 21, of the connecting rod 30 is rotatably connected with the back flushing device; the bottom of the fixed support is provided with a limit groove, and the upper part of the rotating arm 29 penetrates through the limit groove and swings in the limit groove.
During operation, the chain 13 moves to enable the draft arm 19 to swing, the draft arm 19 swings in the limited area of the draft arm base 28, the rotating shaft 21 rotates along with the swing of the draft arm 19, the rotating arm 29 swings along with the rotation of the rotating shaft 21, and then the rotating arm swings through the connecting rod 30 to drive the back blowing device to move up and down along the vertical shaft rod 31.
Specifically, in this embodiment, when the servo motor 10 rotates forward, the chain 13 drags the draft arm 19, and when the draft arm 19 swings to the limited area of the draft arm base 28 (the bottom of the draft arm base 28 is provided with a limit groove, and the draft arm 19 passes through the limit groove and swings therein), the draft arm cannot swing any more, and when the chain 13 continues to drag, the blowback dolly 11 can move horizontally; after the chain moves to the designated position, the servo motor 10 rotates reversely, the chain 13 drags the traction arm 19 reversely, and when the traction arm 19 is in a vertical state, the back blowing device reaches the lowest point. After the back blowing is finished, the servo motor 10 rotates forwards, and the steps are repeated, so that the back blowing trolley 11 moves horizontally and the back blowing device moves up and down.
In this embodiment, the blowback device includes a sealing body 24, and the sealing body 24 includes a lifting plate 25, a lifting pipe 34, a blowback pressing plate 38 and a spring blocking plate 37; a linear bearing 32 is arranged on the lifting plate 25, the vertical shaft rod 31 passes through the linear bearing 32 to realize vertical sliding connection, and one end of the connecting rod 30, which is far away from the rotating shaft 21, is rotatably connected with the top end of the lifting plate 25; the lifting plate 25 is provided with a plurality of through holes, the lifting pipe 34 is provided with a plurality of through holes, and each through hole is used for being communicated with the top end of one lifting pipe 34. The back-blowing pressing plate 38 is fixed at the bottom end of the lifting pipe 34 through a back-blowing pressing plate flange, a through hole is formed in the middle of the back-blowing pressing plate 38, and the back-blowing pressing plate 38 is used for sealing a bag cage opening of the filter bag and adjusting the back-blowing air volume (adjusting plates with different pore sizes are placed in the back-blowing pressing plate 38 to adjust the back-blowing air volume of each filter bag; a spring plate 35 is arranged on the outer wall of the lifting pipe 34, and two ends of the spring plate 35 are respectively provided with one spring blocking plate 37; the lifting pipe 34 is a back-blowing pipeline, and is also a base of a back-blowing pressing plate 38 and a spring blocking plate 37; the bottom of the outer shell 27 of the blowback trolley 11 is provided with a plurality of through holes for the lifting pipe 34 to pass through.
In this embodiment, the back-blowing device closes the three rows of filter bags in the dust collector to a filtering state (i.e., off-line) and blows back-blowing air uniformly into the second row of filter bags (middle row) of off-line filter bags, so as to achieve off-line ash removal, and the separated dust is not adsorbed by the filter bags beside.
Furthermore, a tension spring fixing flange 33 is arranged at the top of the lifting pipe 34, the tension spring fixing flange 33 is fixedly connected with the bottom end of the lifting plate 25 through a tension spring, the lifting pipe can have certain damping by adopting the tension spring, and the automatic angle compensation is realized when the back-blowing pressing plate 38 contacts with the bag cage mouth of the uneven filter bag, so that the back-blowing pressing plate 38 and the bag cage mouth are better sealed, and the back-blowing dust removal of the row of filter bags is better realized; and a flexible material is adopted to seal between the outer surface of the lifting pipe 34 and the through hole of the bottom plate of the outer shell 27 of the blowback trolley 11, so that sealing is realized while the lifting pipe is lifted. The end part of the spring plate 35 is connected with a spring blocking plate 37 through a shaft pin, a spring 36 is sleeved on the shaft pin, two ends of the spring 36 are respectively connected with the spring plate 35 and the spring blocking plate 37, and when the spring blocking plate 37 contacts the uneven filter bag cage opening, the spring 36 can be compressed to move up and down, so that the problem of uneven filter bag cage opening is solved, and a better sealing effect is realized.
In the embodiment, after the back-blowing trolley 11 travels in place according to a specified distance, the sealing body 24 is reversely driven to descend to seal the filter bags in an online filtering state (off-line is realized), the control valve 3 in the area is opened to carry out back-blowing (time control), the control valve 3 is closed after the back-blowing is finished, the servo motor 10 is started to enable the chain 13 to drag the traction arm 19 to enable the sealing body 24 to ascend, when the traction arm 19 reaches the contact position of the back-blowing trolley 11, the back-blowing trolley 11 is dragged to travel to the next row of filter bags needing back-blowing to stop, the servo motor 10 reversely rotates to enable the chain 13 to drag the traction arm 19 to reversely swing, so that the sealing body 24 descends to; until the blowback trolley 11 advances to the proper position, the position is determined by the encoder of the servo motor 10.
The utility model discloses do not use electromagnetic pulse valve and nozzle etc. do not need the high-speed blowout compressed air of nozzle (0.4Mpa) and form the secondary air drainage as the deashing air supply, but the blowback about the approximate pressure 4Kpa that adopts high-pressure centrifugal fan to provide is as the deashing air supply, so need not to guarantee accurate filter bag centering degree. The air source has low pressure and air quantity more than 3 times of the filtering air quantity, namely, the whole filter bag is milder in the moment and presents a positive pressure state, and dust is effectively removed without excessively damaging an initial dust layer, so that the good dust removal efficiency and the service life of the filter bag are ensured, and meanwhile, the strength of the back blowing pressure is adjustable and is automatically adjusted along with the filtering air quantity. In addition, due to the fact that off-line flexible back blowing is adopted, dust after ash removal falls into the ash bucket and then is filtered on line, the dust after ash removal cannot be adsorbed again, and the filtering burden of the filter bag is reduced.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. The utility model provides a can realize off-line blowback deashing system at online pulse jetting dust remover which characterized in that: the dust collection box comprises a back-blowing fan, a connecting pipeline, a dust collection box body and a back-blowing trolley, wherein the back-blowing fan is arranged at the top of the dust collection box body, an air outlet of the back-blowing fan is communicated with a first end of the connecting pipeline, and a second end of the connecting pipeline extends into the dust collection box body and is communicated with the top of the back-blowing trolley; the back blowing trolley is arranged at the bottom of the dust removal box body and is connected with a driving device for driving the back blowing trolley to move; the bottom of the dust removal box body is provided with a plurality of through holes, and each through hole is used for being communicated with one filter bag to be cleaned; and a back blowing device is arranged at the bottom of the back blowing trolley and is used for back blowing and ash removal on part of the filter bags to be subjected to ash removal.
2. The system capable of realizing off-line blowback ash removal of the on-line pulse blowing dust remover according to claim 1, characterized in that: the connecting pipeline comprises an outer pipeline, an inner pipeline and an intermediate pipeline; the external pipeline is arranged on the outer side of the top of the dust removal box body, one end of the external pipeline is communicated with the top end of the middle pipeline through a control valve, and the other end of the external pipeline is connected with an air outlet of the back blowing fan; the internal pipeline is arranged in the dust removal box body, one end of the internal pipeline is communicated with the bottom end of the intermediate pipeline, and the other end of the internal pipeline is communicated with the back flushing trolley;
the internal pipeline comprises a first pipeline and a second pipeline, the top end of the first pipeline is rotatably connected with the bottom end of the middle pipeline, one end of the second pipeline is rotatably connected with the bottom end of the first pipeline, and the other end of the second pipeline is rotatably connected with the top of the blowback trolley; the middle part of the second pipeline is a flexible compensating pipe.
3. The system capable of realizing off-line blowback ash removal of the on-line pulse blowing dust remover according to claim 2, characterized in that: a cantilever device is arranged at the joint of the middle pipeline and the first pipeline; the cantilever device comprises a cantilever and a cantilever base, the cantilever base is arc-shaped, an H-shaped bearing is installed at the bottom end of the middle pipeline through an H-shaped bearing base, a rotating ring is arranged on the inner wall of the cantilever base, the outer diameter of the rotating ring is fixedly connected with the cantilever base, and the inner diameter of the rotating ring is arranged in a bearing groove of the H-shaped bearing and is in rotating connection with the H-shaped bearing; one end of the cantilever is fixedly connected with the outer wall of the cantilever base, and the other end of the cantilever is connected with the first pipeline through a tensioner.
4. The system capable of realizing off-line blowback ash removal of the on-line pulse blowing dust remover according to claim 3, characterized in that: the middle pipelines and the inner pipelines are respectively provided with two groups, and the top ends of the two groups of middle pipelines are respectively connected with the outer pipelines;
the back flushing trolleys are two, the inner ends of the two back flushing trolleys are fixedly connected, and one ends of the two groups of internal pipelines far away from the middle pipeline are respectively and rotatably connected with the top of the outer end of one back flushing trolley; the bottom of the fixed connection part of the two back blowing trolleys is provided with a middle supporting wheel, and the outer ends of the two back blowing trolleys are connected with one driving device;
or one blowback trolley is arranged, one ends of the two groups of internal pipelines far away from the middle pipeline are respectively and rotatably connected with the tops of the two ends of the blowback trolley, a middle supporting wheel is arranged at the middle bottom of the blowback trolley, and the two ends of the blowback trolley are respectively connected with one driving device;
and a supporting wheel channel is arranged at the middle position of the inner bottom of the dust removal box body.
5. The system capable of realizing off-line back-blowing ash removal of the online pulse blowing dust remover according to claim 2 or 4, is characterized in that: the driving device comprises a servo motor, an output shaft of the servo motor is connected with a driving chain wheel, the driving chain wheel is connected with a driven chain wheel through a chain, the driving chain wheel and the driven chain wheel are respectively arranged at the front end and the rear end of the dust removal box body, and the driving chain wheel is close to the servo motor; the chain is fixedly connected with the back blowing trolley.
6. The system capable of realizing off-line blowback ash removal of the on-line pulse blowing dust remover according to claim 5, characterized in that: the back flushing trolley comprises an outer shell, the top end of the outer shell is provided with a vent used for being communicated with the second pipeline, and a guide plate is arranged below the vent;
a traction arm base is arranged at the outer end of the ventilation opening, a traction arm is arranged on the traction arm base, one end of the traction arm is rotatably connected with the traction arm base, a through hole is formed in the other end of the traction arm, and the chain penetrates through the through hole and is connected with the traction arm through a spring;
the track wheel is installed through the track wheel bearing frame on the draft arm base, the lateral wall of shell body is provided with the track, the track wheel is followed the track removes.
7. The system capable of realizing off-line blowback ash removal of the on-line pulse blowing dust remover according to claim 6, characterized in that: a plurality of vertical shaft rods are arranged in the outer shell, the bottoms of the vertical shaft rods are fixedly connected with the bottom of the outer shell, the tops of the vertical shaft rods are fixedly connected with the top of the outer shell through fixed supports, and the back blowing device moves up and down along the vertical shaft rods;
two fixed supports are arranged in parallel, and the two fixed supports are connected with a rotating shaft through a rotating shaft bearing seat; one end of the rotating shaft is connected with one fixed support, and the other end of the rotating shaft penetrates through the other fixed support and is fixedly connected with the traction arm through a coupler; the fixed support is provided with a rotating arm, the top end of the rotating arm is fixedly connected with the rotating shaft, the bottom end of the rotating arm penetrates through the fixed support and is rotatably connected with a connecting rod, and one end of the connecting rod, which is far away from the rotating shaft, is rotatably connected with the back flushing device;
the bottom of the fixed support is provided with a limit groove, and the upper part of the rotating arm penetrates through the limit groove and swings in the limit groove.
8. The system capable of realizing off-line blowback ash removal of the on-line pulse blowing dust remover according to claim 7, characterized in that: the back flushing device comprises a sealing body, and the sealing body comprises a lifting plate, a lifting pipe, a back flushing pressing plate and a spring blocking plate; the lifting plate is provided with a linear bearing, the linear bearing is connected with the vertical shaft rod in a vertical sliding manner, and one end of the connecting rod, which is far away from the rotating shaft, is rotatably connected with the top end of the lifting plate;
the lifting plate is provided with a plurality of through holes, each through hole is used for being communicated with the top end of one lifting pipe, the back-blowing pressing plate is fixed at the bottom end of the lifting pipe, and the middle part of the back-blowing pressing plate is provided with a through hole; the outer wall of the lifting pipe is provided with a spring plate, and two ends of the spring plate are respectively provided with one spring blocking plate;
and a plurality of through holes are formed in the bottom of the outer shell of the back flushing trolley and used for enabling the lifting pipe to pass through.
9. The system capable of realizing off-line blowback ash removal of the on-line pulse blowing dust remover according to claim 8, characterized in that: the top of the lifting pipe is provided with a tension spring fixing flange which is fixedly connected with the bottom end of the lifting plate through a tension spring; the end part of the spring plate is connected with the spring plugging plate through a shaft pin, a spring is sleeved on the shaft pin, and two ends of the spring are respectively connected with the spring plate and the spring plugging plate.
10. The system capable of realizing off-line blowback ash removal of the on-line pulse blowing dust remover according to claim 9, characterized in that: an adjusting plate is arranged in the back blowing pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021429997.XU CN213101238U (en) | 2020-07-20 | 2020-07-20 | Off-line back-blowing ash removal system capable of realizing on-line pulse blowing dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021429997.XU CN213101238U (en) | 2020-07-20 | 2020-07-20 | Off-line back-blowing ash removal system capable of realizing on-line pulse blowing dust remover |
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| Publication Number | Publication Date |
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| CN213101238U true CN213101238U (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021429997.XU Active CN213101238U (en) | 2020-07-20 | 2020-07-20 | Off-line back-blowing ash removal system capable of realizing on-line pulse blowing dust remover |
Country Status (1)
| Country | Link |
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| CN (1) | CN213101238U (en) |
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2020
- 2020-07-20 CN CN202021429997.XU patent/CN213101238U/en active Active
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