CN112957836A - Device and method for inhibiting secondary dust raising of bag type dust collector - Google Patents
Device and method for inhibiting secondary dust raising of bag type dust collector Download PDFInfo
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- CN112957836A CN112957836A CN202110184670.3A CN202110184670A CN112957836A CN 112957836 A CN112957836 A CN 112957836A CN 202110184670 A CN202110184670 A CN 202110184670A CN 112957836 A CN112957836 A CN 112957836A
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- rotor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to the technical field of dust collectors, in particular to a device for inhibiting secondary dust emission of a bag type dust collector and an inhibiting method thereof. The device is arranged at the bottom of a middle box body and the upper part of an ash bucket and comprises a plurality of rotors arranged side by side, the rotors are driven by a driving mechanism to rotate, two adjacent rotors rotate in the same speed and in the opposite direction, the rotors are equivalent to gears with only two teeth or three teeth, the head of one rotor is meshed with the root of the other rotor, a gap is reserved between the two rotors in the meshing process, and a brush part is arranged at the head of the rotor. The invention separates the air flow and the dust deposit by utilizing a plurality of rows of mutually meshed rotors, and the brush part at the head part of the rotor can sweep and brush the dust falling from the root part of the rotor into the dust hopper in the process of the continuous rotation of the rotor, so that the side of the rotor facing the air flow is always kept in a dust-free state, and secondary dust raising cannot be generated. The invention has the advantages of smaller occupied space and no influence on the actual use space of the ash hopper.
Description
Technical Field
The invention relates to the technical field of dust collectors, in particular to a device for inhibiting secondary dust emission of a bag type dust collector and an inhibiting method thereof.
Background
The bag type dust collector is a dry type dust filtering device. It is suitable for trapping fine, 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, after the dust-containing gas enters the bag type dust collector, 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.
However, in practical applications, the flow rate of the inlet air flow of the dust collector is relatively high, which tends to rewind the deposited dust falling into the dust hopper, resulting in secondary dust raising, increased dust handling capacity, reduced dust collection efficiency, premature wear of the filter bag, and unnecessary loss.
The invention with patent number CN205340397U discloses a secondary dust suppression mechanism of a dust collector, wherein an inverted cone-shaped secondary dust suppressor is arranged above a dust hopper, so that deposited dust falls from a slit between the dust hopper and the secondary dust suppressor, the secondary dust suppressor partially isolates the deposited dust below from an air flow, and the air flow cannot blow the deposited dust once to the secondary dust suppressor, and the invention has the following disadvantages:
1. the actual height of the secondary raise dust suppressor of back taper is approximately close to half of the ash bucket height, occupies the ash bucket space, if will guarantee no secondary raise dust, the height that the interior actual deposition height of ash bucket can not be higher than secondary raise dust suppressor edge, otherwise the deposition will be exposed in the air current, produces the secondary raise dust, and at this moment, the actual effective deposition height of ash bucket is half of original ash bucket, and effective volume is the fourth of original ash bucket.
2. When practical application, the wallboard inclination of ash bucket and secondary raise dust inhibitor is about 60, and too big angle can make the ash bucket elongate, and the angle deposition of undersize can't lean on the dead weight whereabouts, but even 60, the wallboard of ash bucket and secondary raise dust inhibitor still can be infected with the deposition, can't accomplish the deposition and fall down completely, under the effect of air current, still can produce the secondary raise dust.
Disclosure of Invention
The invention solves the problems that: the prior art lacks effective means for inhibiting secondary dust emission, and provides a device for inhibiting secondary dust emission of a bag type dust collector and an inhibiting method thereof.
The invention is realized by the following technical scheme, the device for inhibiting secondary dust emission of the bag type dust collector is arranged at the bottom of a middle box body and the upper part of an ash bucket, the device comprises a plurality of rotors arranged side by side, rotor shafts of the rotors extend out of the middle box body and are driven by a driving mechanism to rotate, two adjacent rotors rotate in the same speed and reverse direction, the rotors are provided with heads with involute shapes and roots connected with the heads, the heads of one rotor and the roots of the other rotor are meshed with each other, a gap is reserved between the two rotors in the meshing process, the roots of the rotors are smooth surfaces, the heads of the rotors are provided with high-temperature-resistant brush parts, and the normal height of the brush parts is larger than the gap when the two rotors are meshed.
In this scheme, utilize multirow intermeshing's rotor to keep apart air current and deposition, the dust brush that the brush portion of the head of rotation in-process rotor that the rotor does not stop can drop the root of rotor brushes to the ash bucket in, makes the rotor meet the one side of air current remain no dust state all the time, just can't produce the secondary raise dust.
Further, the rotor is a two-lobe type or three-lobe type, that is, the rotor is equivalent to a gear with only two teeth or three teeth, the two-lobe type or three-lobe type is simple and durable, more lobe types can be used, but the processing is complex, and the cost is increased.
Further, in order to save cost and reduce the weight of the device, the rotor is of a hollow structure and comprises a rotor shaft, a shell and a supporting piece, the shell is fixed on the rotor shaft through the supporting piece, and two ends of the shell are sealed.
Furthermore, in order to make the dust-removing effect of the rotor better, the shell is made of polytetrafluoroethylene materials or made of carbon steel substrates, a polytetrafluoroethylene thin plate is bonded, dust is not easy to adhere to the rotor, and the brush part can easily sweep the dust down.
Further, in order to improve the sweeping effect, the brush part comprises an installation part and bristles, wherein the bristles are arranged in multiple rows, and each row of bristles are tightly arranged along the axial direction of the roller.
Further, in order to improve the sweeping effect, the inclination angles of the brush hairs and the installation part are provided with various angles.
Further, actuating mechanism includes driving motor, action wheel, synchromesh gear installs the end at the rotor shaft, and a plurality of synchromesh gear mesh in proper order, and driving motor's drive action wheel rotates, the action wheel meshes with one of them synchromesh gear.
In another aspect of the present invention, a method for suppressing secondary dust emission of a bag filter is provided, which comprises:
the flat-laid rotors which are meshed with each other are used as a medium for isolating the ash bucket from the airflow, so that the collected deposited ash falling into the ash bucket cannot be blown up by the high-speed airflow, and the effect of inhibiting the secondary lift is achieved, wherein the head part and the root part are included, two adjacent rotors are driven by a driving mechanism to rotate in the same speed and in opposite directions, the head part of one rotor is meshed with the root part of the other rotor, the rotors are of a two-blade type or a three-blade type, namely, the rotors are equivalent to gears with only two teeth or three teeth, but a gap is reserved between the two rotors in the meshing process, dust newly falling on the rotors can gradually fall into the ash bucket in the rotating process of the rotors, meanwhile, the head part is also provided with a high-temperature-resistant brush part, the height of the brush part is larger than the gap when the two rotors are meshed, the bristles of the brush part are contacted with the, therefore, the brushing action is generated on the root of the other rotor by the bristles in the meshing process, so that the ash deposited on the rotor is brushed into the ash bucket, and when the brushed root rotates to be contacted with the airflow again, no ash is deposited on the surface, and the secondary lift cannot be generated.
The invention has the beneficial effects that:
1. the invention separates the air flow and the dust deposit by utilizing a plurality of rows of mutually meshed rotors, and the brush part at the head part of the rotor can sweep and brush the dust falling from the root part of the rotor into the dust hopper in the process of the continuous rotation of the rotor, so that the side of the rotor facing the air flow is always kept in a dust-free state, and secondary dust raising cannot be generated.
2. The invention occupies smaller space, and the actual use space of the ash bucket is not influenced.
Drawings
FIG. 1 is a schematic structural diagram of a device for suppressing secondary dust raising of a bag filter in a dust collector according to the present invention;
FIG. 2 shows a first configuration of the rotor according to the present invention;
FIG. 3 shows a second embodiment of the rotor according to the invention;
FIG. 4 is a schematic view of a drive mechanism according to the present invention;
fig. 5 is a state diagram of the process of rotating two rotors of the structure of fig. 2 by 90 °.
In the figure: 1, a middle box body; 2, an ash hopper; 3, a rotor; 31 a head portion; 32 roots; 33 a rotor shaft; 34 a housing; 35 a support member; 4, a driving mechanism; 41 driving a motor; 42 a driving wheel; 43 a synchronizing gear; 5, a brush part; 51 an installation part; 52 bristles.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, a device for suppressing secondary dust emission of a bag-type dust collector, the device is installed at the bottom of a middle box 1 and at the upper part of an ash bucket 2, the device comprises a plurality of rotors 3 arranged side by side, a rotor shaft 33 of each rotor 3 extends out of the middle box 1 and is driven to rotate by a driving mechanism 4, two adjacent rotors 3 rotate in opposite directions at the same speed, each rotor 3 is provided with a head 31 and a root 32, the shapes of the head 31 and the root 32 are involute curves, the head 31 of one rotor 3 and the root 32 of the other rotor 3 are meshed with each other, a gap is reserved between the two rotors 3 in the meshing process, the root 32 of the rotor 3 is a smooth surface, the head 31 of the rotor 3 is provided with a high-temperature resistant brush 5, and the normal height of the brush 5 is greater than the gap when the two.
In this scheme, utilize multirow intermeshing's rotor 3 to keep apart air current and deposition, the brush portion of the head 31 of rotor 3 can be brushed the dust that the root 32 of rotor 3 fell to the ash bucket 2 in the rotation process that rotor 3 does not stop, makes rotor 3 meet the one side of air current and remains no dust state all the time, just can't produce the secondary raise dust. Compared with the prior art cited in the background art, the dust hopper 3 occupies smaller space, the actual use space of the dust hopper 3 is not affected, and the suppression effect of secondary dust emission is better.
In practical applications, the rotor 3 is a two-lobe type or three-lobe type, that is, the rotor is equivalent to a gear with only two teeth or three teeth, the two-lobe type or three-lobe type is simple and durable, and more lobe types can be used, but the processing is complicated, and the cost is increased. As shown in fig. 2, in an embodiment of the present invention, the rotor 3 is of a two-bladed type, i.e. having two heads 31 and two roots 32; in another embodiment of the invention, shown in fig. 3, the rotor 3 is of the three-lobed type, i.e. having three heads 31 and three roots 32.
In practical application, in order to save cost and reduce weight of the device, the rotor 3 is a hollow structure and comprises a rotor shaft 33, a shell 34 and a support 35, the shell 34 is fixed on the rotor shaft 33 through the support 35, and two ends of the shell 34 are sealed.
In practical application, in order to make the dust-removing effect of the rotor 3 better, the shell 34 is made of polytetrafluoroethylene or made of carbon steel substrate, and is bonded with a polytetrafluoroethylene thin plate, so that dust is not easy to adhere to the rotor, and the brush part 5 can easily remove the dust.
In practical application, in order to improve the sweeping effect, the brush part 5 comprises a mounting part 51 and bristles 53, wherein the bristles 53 are arranged in a plurality of rows, and each row of bristles 53 is tightly arranged along the axial direction of the roller.
In practical applications, the inclination angles of the brush staples 53 and the mounting portion 51 are set to various angles in order to improve the sweeping effect.
In practical application, as shown in fig. 4, the driving mechanism 4 includes a driving motor 41, a driving wheel 42, and synchronizing gears 43, the synchronizing gears 43 are installed at the end of the rotor shaft 33, a plurality of synchronizing gears 43 are sequentially engaged, the driving wheel 42 of the driving motor 41 rotates, and the driving wheel 42 is engaged with one of the synchronizing gears 43.
In another aspect of the present invention, a method for suppressing secondary dust emission of a bag filter is provided, which comprises:
the method adopts a plurality of rows of mutually meshed rotors 3 which are laid flat as a medium for isolating an ash bucket 2 from air flow, so that the high-speed air flow cannot blow accumulated ash which is collected and falls into the ash bucket 2, and the effect of inhibiting secondary lift is achieved, wherein the head 31 and the root 32 are included, two adjacent rotors 3 are driven by a driving mechanism 4 to rotate reversely at the same speed, so that the head 31 of one rotor 3 and the root 32 of the other rotor 3 are mutually meshed, the rotors 3 are of a two-blade type or a three-blade type, namely, the gear is equivalent to a gear with only two teeth or three teeth, but a gap is reserved between the two rotors 3 in the meshing process, dust which newly falls on the rotors 3 gradually falls into the ash bucket 2 in the rotating process of the rotors 3, meanwhile, the head 31 is also provided with a high-temperature resistant brush part 5, the height of the brush part 5 is larger than the gap when the two rotors 3 are meshed, 53 of the brush part, however, since the linear velocity of the brush bristles 53 is greater than that of the root portion 32 during the rotation, the brush bristles 53 perform a brushing action on the root portion 32 of the other rotor 3 during the meshing process, so that the dust on the rotor 3 is brushed into the dust hopper 2, and when the brushed root portion 32 rotates again to be in contact with the air flow, no dust is deposited on the surface, and secondary dust cannot be generated.
As shown in fig. 5, which is a process state diagram of two adjacent rotors 3 when the rotor of the embodiment of the present invention rotates 90 °, it can be clearly seen that the brush 5 slides relatively on the root 32, and this action can sweep the dust falling on the root 32 into the dust hopper, while the dust falling on the head 31 naturally falls when the head 31 rotates vertically downward, so as to achieve a good effect of using dust on the surface, and no dust is deposited on the surface, and no secondary dust can be generated naturally.
In conclusion, the device for inhibiting secondary dust emission of the bag type dust collector can well isolate accumulated dust and airflow, and achieves a good effect of inhibiting secondary dust emission.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical spirit and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art.
Claims (8)
1. The utility model provides a restrain device of bag collector secondary raise dust which characterized in that: the device is arranged at the bottom of the middle box body (1) and the upper part of the ash bucket (2), and comprises a plurality of rotors (3) which are arranged side by side, the rotor shaft (33) of the rotor (3) extends out of the middle box body (1) and is driven to rotate by the driving mechanism (4), two adjacent rotors (3) rotate reversely at the same speed, the rotors (3) are provided with a head part (31) with an involute outline and a root part (32) connected with the head part (31), the head part (31) of one rotor (3) is meshed with the root part (32) of the other rotor (3), a gap is reserved between the two rotors (3) in the meshing process, the root parts (32) of the rotors (3) are smooth surfaces, a high-temperature resistant brush part (5) is arranged at the head part (31) of the rotor (3), the normal height of the brush part (5) is larger than the clearance when the two rotors (3) are meshed.
2. The device for suppressing secondary dust emission of a bag-type dust collector as claimed in claim 1, wherein: the rotor (3) is of a two-lobe type or a three-lobe type, namely, the rotor is equivalent to a gear with only two teeth or three teeth.
3. The device for suppressing secondary dust emission of a bag-type dust collector as claimed in claim 1, wherein: the rotor (3) is of a hollow structure and comprises a rotor shaft (33), a shell (34) and a supporting piece (35), the shell (34) is fixed on the rotor shaft (33) through the supporting piece (35), and two ends of the shell (34) are sealed.
4. The device for suppressing secondary dust emission of a bag-type dust collector as claimed in claim 3, wherein: the shell (34) is made of polytetrafluoroethylene materials or made of carbon steel substrates and is bonded with a polytetrafluoroethylene thin plate.
5. The device for suppressing secondary dust emission of a bag-type dust collector as claimed in claim 1, wherein: the brush part (5) comprises an installation part (51) and bristles (53), wherein the bristles (53) are arranged in multiple rows, and each row of bristles (53) is tightly arranged along the axial direction of the roller.
6. The device for suppressing secondary dust emission of a bag-type dust collector as claimed in claim 5, wherein: the inclination angles of the brush bristles (53) and the mounting part (51) are set to various angles.
7. The device for suppressing secondary dust emission of a bag-type dust collector as claimed in any one of claims 1 to 6, wherein: the driving mechanism (4) comprises a driving motor (41), a driving wheel (42) and synchronous gears (43), wherein the synchronous gears (43) are installed at the tail end of the rotor shaft (33), the synchronous gears (43) are sequentially meshed, the driving wheel (42) of the driving motor (41) rotates, and the driving wheel (42) is meshed with one of the synchronous gears (43).
8. A method for inhibiting secondary dust raising of a bag type dust collector is characterized by comprising the following steps: the flat-laid rotors (3) meshed with each other are used as a medium for isolating the ash bucket (2) from air flow, so that the collected ash falling into the ash bucket (2) cannot be blown up by the high-speed air flow, and the effect of inhibiting the secondary lift is achieved, the head part (31) and the root part (32) are included, two adjacent rotors (3) are driven by the driving mechanism (4) to rotate reversely at the same speed, the head part (31) of one rotor (3) and the root part (32) of the other rotor (3) are meshed with each other, the rotors (3) are of a two-blade type or a three-blade type, namely, the rotors are equivalent to gears with only two teeth or three teeth, but a gap is reserved between the two rotors (3) in the meshing process, the dust newly falling on the rotors (3) can gradually fall into the ash bucket (2) in the rotating process of the rotors (3), meanwhile, the head part (31) is also provided with a high-temperature-resistant brush part (5), and the normal height of the brush part (5), the brush bristles (53) of the brush part (5) are contacted with the root part (32) of the other rotor (3), but the linear velocity of the brush bristles (53) is greater than that of the root part (32) in the rotating process, so the brush bristles (53) generate a sweeping action on the root part (32) of the other rotor (3) in the meshing process, the dust on the rotor (3) is all swept into the dust hopper (2), and when the root part (32) after sweeping rotates to be contacted with the air flow again, the surface has no dust, and the secondary lift cannot be generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110184670.3A CN112957836A (en) | 2021-02-10 | 2021-02-10 | Device and method for inhibiting secondary dust raising of bag type dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110184670.3A CN112957836A (en) | 2021-02-10 | 2021-02-10 | Device and method for inhibiting secondary dust raising of bag type dust collector |
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| Publication Number | Publication Date |
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| CN112957836A true CN112957836A (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110184670.3A Pending CN112957836A (en) | 2021-02-10 | 2021-02-10 | Device and method for inhibiting secondary dust raising of bag type dust collector |
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| CN (1) | CN112957836A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865382A (en) * | 2019-02-15 | 2019-06-11 | 深圳市雷凌广通技术研发有限公司 | A kind of heavy duty detergent sack cleaner of the anti-fugitive dust for air cleaning |
| CN209378619U (en) * | 2018-10-31 | 2019-09-13 | 盐城市兰丰环境工程科技有限公司 | A kind of mine dry-type duster pulse deashing device |
-
2021
- 2021-02-10 CN CN202110184670.3A patent/CN112957836A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209378619U (en) * | 2018-10-31 | 2019-09-13 | 盐城市兰丰环境工程科技有限公司 | A kind of mine dry-type duster pulse deashing device |
| CN109865382A (en) * | 2019-02-15 | 2019-06-11 | 深圳市雷凌广通技术研发有限公司 | A kind of heavy duty detergent sack cleaner of the anti-fugitive dust for air cleaning |
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Application publication date: 20210615 |
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| RJ01 | Rejection of invention patent application after publication |