CN114832511A - High-efficient multicell dust remover that abrasionproof decreases - Google Patents
High-efficient multicell dust remover that abrasionproof decreases Download PDFInfo
- Publication number
- CN114832511A CN114832511A CN202210449806.3A CN202210449806A CN114832511A CN 114832511 A CN114832511 A CN 114832511A CN 202210449806 A CN202210449806 A CN 202210449806A CN 114832511 A CN114832511 A CN 114832511A
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- Prior art keywords
- valve body
- lock valve
- air
- movable sealing
- impeller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to the technical field of air lock structures in multi-tube dust collectors, and discloses an anti-abrasion efficient multi-tube dust collector which comprises an air lock valve body, wherein a transmission main shaft is movably sleeved inside the air lock valve body, an impeller is fixedly sleeved in the middle of the outer surface of the transmission main shaft and positioned in an inner cavity of the air lock valve body, a fixed rail block is arranged on one side of the inner cavity of the air lock valve body, a track communicating groove communicated to the inner cavity of the fixed rail block is formed in the outer surface of the fixed rail block, and an installation groove is formed in the middle of the outer side of the track communicating groove. This high-efficient multicell dust remover of abrasionproof decreases to movable seal circle on the fixed rail piece and the driven setting of extrusion friction between the impeller on the transmission main shaft for the dirt particle in the air-lock valve body inner chamber can only adhere on movable seal circle's surface, and it can take place rotatory removal along with the rotation of impeller, can effectively reduce the wearing and tearing between impeller and the air-lock valve body inner wall.
Description
Technical Field
The invention relates to the technical field of airlocker structures in multi-tube dust collectors, in particular to an anti-abrasion efficient multi-tube dust collector.
Background
The multi-tube dust collector is a dry dust collection structure formed by combining a plurality of small cyclone dust collectors in a shell in parallel, and separates and collects dust particles from high-speed airflow by utilizing centrifugal force, and then the dust particles fall into a dust collection chamber by contacting with gravity, so that dust collection operation of dust-containing gas is completed;
however, since the axial flow exists in the multi-tube dust collector housing for generating centrifugal force, in order to maintain smooth and stable discharge of dust particles and prevent the dust particles in the dust collecting chamber from being disturbed due to the random flow of air, an air lock structure is designed in the dust discharge pipeline of the multi-tube dust collector, so that the dust particles can be discharged smoothly, and meanwhile, the phenomenon of air leakage can be avoided to the maximum extent, and the dust collection efficiency of the multi-tube dust collector for dust-containing gas can be effectively improved.
However, most of the existing airlock structures are formed by a belt-type rotary impeller and a machine body, when the impeller is driven by a transmission mechanism to rotate in the machine body, dust particles in the multi-tube dust collector shell fall into an impeller grid chamber and are conveyed to a discharge port along with the rotation of the impeller to be discharged, and in the whole working process, a large amount of dust particles are adhered to the surface of the rotary impeller because the outer surface of the rotary impeller and the inner wall of the machine body are exposed in dust-containing gas, and abrasion between the impeller and the inner wall of the machine body is aggravated in the relative rotation process of the rotary impeller, so that the sealing performance of the rotary impeller and the inner wall of the machine body is poor, and the dust removal effect and the dust removal efficiency of the multi-tube dust collector on the dust-containing gas are greatly influenced.
Therefore, there is a need for an airlock structure for use in a multi-tube dust collector to overcome the above-mentioned disadvantages of the conventional airlock during practical use.
Disclosure of Invention
Technical problem to be solved
The invention provides an anti-abrasion high-efficiency multi-pipe dust remover which has the advantages of effectively reducing abrasion generated between a rotary impeller and the inner wall of a dust-containing gas in an air-lock device on the multi-pipe dust remover in the relative rotation process, ensuring that the multi-pipe dust remover has better sealing performance and higher dust removal effect and dust removal efficiency on the dust-containing gas, and solving the problems that the sealing performance of the multi-pipe dust remover on the inner part of a shell is poor and the dust removal effect and dust removal efficiency of the multi-pipe dust remover on the dust-containing gas are poor due to the fact that the outer surface of the rotary impeller and the inner wall of a dust-containing gas are exposed in the dust-containing gas in the air-lock device structure in the existing multi-pipe dust remover are aggravated by abrasion of the impeller or the inner wall of the dust-containing gas in the relative rotation process.
(II) technical scheme
The invention provides the following technical scheme: the utility model provides a high-efficient multicell dust remover of abrasionproof loss, includes the air-lock valve body, the transmission main shaft has been cup jointed in the inside activity of air-lock valve body, the impeller has been cup jointed to the middle part of transmission main shaft surface and the fixed cover in the inner chamber that is located the air-lock valve body, one side of air-lock valve body inner chamber is equipped with the fixed rail piece, and sets up the orbit intercommunication groove that feeds through to in its inner chamber at the surface of fixed rail piece, the movable seal circle that passes orbit intercommunication groove has been cup jointed in the surface activity of fixed rail piece, the mounting groove has been seted up at the middle part in the orbit intercommunication groove outside, and the inside of mounting groove is equipped with pressure guiding mechanism, contact each other between the inner wall of pressure guiding mechanism on the mounting groove and movable seal circle, the outside one side fixed mounting of air-lock valve body has seal baffle.
Preferably, the movable sealing ring is made of elastic rubber materials, and the friction coefficient of the outer surface of the movable sealing ring is larger than that of the inner wall of the movable sealing ring.
Preferably, the pressure adjusting mechanism comprises an elastic pressure plate fixedly installed in an installation groove on the fixed rail block, and a supporting block in contact with the inner wall of the movable sealing ring is fixedly installed at the other end of the elastic pressure plate.
Preferably, the distance between the outer diameter of a track circle formed by the outer surface of the impeller on the transmission main shaft and the inner wall of the elastic pressure plate is smaller than the thickness of the movable sealing ring.
Preferably, the end face of the supporting block is provided with a grease pressing block and is in contact with the inner wall of the movable sealing ring, so that the friction coefficient between the inner wall of the movable sealing ring and the outer surface of the fixed rail block can be effectively reduced.
(III) advantageous effects
The invention has the following beneficial effects:
1. this high-efficient multi-tube dust remover of abrasionproof decreases, to the setting of the extrusion friction drive between movable seal circle on the fixed rail piece and the impeller on the transmission main shaft, make the dust particle in the air-lock valve body inner chamber can only adhere on the surface of movable seal circle, and it can take place rotatory movement along with the rotation of impeller, produce relative friction between the part that its inner wall did not adhere to dust particle and the surface of fixed rail piece and move, compare with the air-lock ware on the current multi-tube dust remover, can effectively reduce the wearing and tearing between impeller and the air-lock valve body inner wall, simultaneously, because of the extrusion deformation that the impeller caused to movable seal circle, make it can form good sealed effect and the difficult phenomenon that takes place the gas leakage to the inner chamber of air-lock ware valve body, and then effectively improved dust removal effect and the dust collection efficiency of this multi-tube dust remover to dusty gas.
2. The anti-abrasion efficient multi-tube dust remover can effectively adjust the tightness state of the dust remover when the pressure adjusting mechanism in the mounting groove on the fixed rail block expands with heat and contracts with cold due to relative movement between the movable sealing ring and the fixed rail block, so as to ensure the extrusion friction force between the dust remover and the impeller on the transmission main shaft, so that the dust remover keeps good rotary movement action under the rotation action of the impeller, and the dust remover cannot cause relative movement between the impeller and the outer surface of the impeller due to excessive tensioning and generate friction or cause the impeller to be incapable of driving the impeller to generate rotary movement action along with the impeller due to excessive loosening, and cause the poor sealing performance of the dust remover in an inner cavity of a valve body of an air lock, thereby effectively improving the stability and reliability of the multi-tube dust remover in the using process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a valve body of the airlock of the present invention;
fig. 3 is a front view of the structure of the present invention.
In the figure: 1. a gas locker valve body; 2. a transmission main shaft; 3. an impeller; 4. fixing a rail block; 5. a movable sealing ring; 6. a pressure adjustment mechanism; 7. sealing the baffle; 8. an elastic pressure plate; 9. a support block; 10. pressing the grease into blocks; 11. a track communicating groove; 12. and installing a groove.
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.
Referring to fig. 1, an anti-abrasion high-efficiency multi-tube dust collector comprises an air-lock valve body 1 fixedly installed at the bottom end of the multi-tube dust collector and communicated with the inner cavity of the housing, a transmission main shaft 2 in transmission connection with a motor is movably sleeved inside the air-lock valve body 1, impellers 3 arranged in an annular array are fixedly sleeved in the middle of the outer surface of the transmission main shaft 2 and positioned in the inner cavity of the air-lock valve body 1, as shown in fig. 2, a fixed rail block 4 is arranged on one side of the inner cavity of the air-lock valve body 1, the outer part of the fixed rail block 4 is of an arc curved surface structure, a track communicating groove 11 communicated with the inner cavity is formed in the outer surface of the fixed rail block 4, a movable sealing ring 5 penetrating through the track communicating groove 11 is movably sleeved on the outer surface of the fixed rail block 4, an installation groove 12 is formed in the middle of the outer side of the track communicating groove 11, and a pressure adjusting mechanism 6 is arranged inside the installation groove 12 for adjusting the tightness of the movable sealing ring 5, the pressure adjusting mechanism 6 on the mounting groove 12 is in contact with the inner wall of the movable sealing ring 5, and a sealing baffle 7 is fixedly mounted on one side of the outer portion of the valve body 1 of the airlock so as to wrap the movable sealing ring 5 in the inner cavity of the valve body 1 of the airlock and form sealing.
In the technical scheme, the movable sealing ring 5 is made of elastic rubber materials, and the friction coefficient of the outer surface of the movable sealing ring is larger than that of the inner wall of the movable sealing ring, so that the movable sealing ring can be driven to rotate and move under the extrusion friction action of the impeller 3.
As shown in fig. 3, in the present embodiment, the pressure adjusting mechanism 6 includes an elastic pressure plate 8 fixedly installed in an installation groove 12 on the fixed rail block 4, and a supporting block 9 contacting with an inner wall of the movable sealing ring 5 is fixedly installed at the other end of the elastic pressure plate 8, so as to adjust the tightness of the movable sealing ring 5, so that the movable sealing ring is prevented from being jammed due to expansion with heat and contraction with cold during a long-time rotation process.
In the technical scheme, the distance between the outer diameter of a track circle formed on the outer surface of the impeller 3 on the transmission main shaft 2 and the inner wall of the elastic pressure plate 8 is smaller than the thickness of the movable sealing ring 5, so that the impeller 3 can extrude and rub the movable sealing ring 5 and drive the movable sealing ring to rotate and move along with the movable sealing ring.
In this technical scheme, the terminal surface of supporting shoe 9 is equipped with grease briquetting 10 and contacts between the inner wall with movable seal 5, and then effectively reduces the coefficient of friction between the inner wall of movable seal 5 and the fixed rail piece 4 surface for movable seal 5 can take place rotary motion along the orbit of fixed rail piece 4 under the effect of the terminal surface friction power of impeller 3.
The use method and the working principle of the embodiment are as follows:
according to the above-mentioned content, the airlock valve body 1 is fixedly mounted on the bottom end of said multiclone dust collector, and is connected with the motor transmission mechanism of its driving main shaft 2, and at the same time of starting said multiclone dust collector, said motor transmission mechanism is started to make it drive the driving main shaft 2 and its blade wheel 3 to make rotation movement, and under the action of extruding friction between blade wheel 3 and movable sealing ring 5, it can drive the movable sealing ring 5 to make rotation movement, so that the dust particles in the internal cavity of airlock valve body 1 can only be adhered on the inner wall of movable sealing ring 5, and its external surface and inner wall of elastic pressure plate 8 can produce friction due to relative movement, so that the blade wheel 3 can not be excessively abraded due to adhesion of dust particles with inner wall of airlock valve body 1 in the course of rotation, at the same time, due to extruding friction of blade wheel 3 on movable sealing ring 5, the multi-tube dust remover generates extrusion deformation, and a good sealing effect is formed between the multi-tube dust remover, so that the dust removing effect and the dust removing efficiency of the multi-tube dust remover on dust-containing gas are effectively improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a high-efficient multicell dust remover of abrasionproof decreases, includes air-lock valve body (1), transmission main shaft (2) have been cup jointed in the inside activity of air-lock valve body (1), the middle part of transmission main shaft (2) surface just is arranged in the inner chamber fixed the cup jointing of air-lock valve body (1) has impeller (3), its characterized in that: one side of air-lock valve body (1) inner chamber is equipped with fixed rail piece (4), and sets up orbit intercommunication groove (11) to in its inner chamber at the surface of fixed rail piece (4), movable sealing washer (5) of passing orbit intercommunication groove (11) have been cup jointed in the surface activity of fixed rail piece (4), mounting groove (12) have been seted up at the middle part in orbit intercommunication groove (11) outside, and the inside of mounting groove (12) is equipped with pressure adjustment mechanism (6), contact each other between the inner wall of pressure adjustment mechanism (6) on mounting groove (12) and movable sealing washer (5), one side fixed mounting outside air-lock valve body (1) has seal baffle (7).
2. A high efficiency multi-tube dust collector against wear, as claimed in claim 1, wherein: the movable sealing ring (5) is made of elastic rubber materials, and the friction coefficient of the outer surface of the movable sealing ring is larger than that of the inner wall of the movable sealing ring.
3. A high efficiency multi-tube dust collector against wear, as claimed in claim 2, wherein: the pressure adjusting mechanism (6) comprises an elastic pressure plate (8) fixedly arranged in an installation groove (12) on the fixed rail block (4), and a supporting block (9) contacted with the inner wall of the movable sealing ring (5) is fixedly arranged at the other end of the elastic pressure plate (8).
4. A high efficiency multi-tube dust collector against wear, as claimed in claim 3, wherein: the distance between the outer diameter of a track circle formed by the outer surface of the impeller (3) on the transmission main shaft (2) and the inner wall of the elastic pressure plate (8) is smaller than the thickness of the movable sealing ring (5).
5. A high efficiency multi-tube dust collector against wear, as claimed in claim 4, wherein: the end face of the supporting block (9) is provided with a grease pressing block (10) which is in contact with the inner wall of the movable sealing ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210449806.3A CN114832511A (en) | 2022-04-27 | 2022-04-27 | High-efficient multicell dust remover that abrasionproof decreases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210449806.3A CN114832511A (en) | 2022-04-27 | 2022-04-27 | High-efficient multicell dust remover that abrasionproof decreases |
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| CN114832511A true CN114832511A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210449806.3A Pending CN114832511A (en) | 2022-04-27 | 2022-04-27 | High-efficient multicell dust remover that abrasionproof decreases |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0069849A1 (en) * | 1981-07-07 | 1983-01-19 | Hartmann Fördertechnik GmbH | Rotary valve for loading or unloading granular materials into or from conveying systems |
| JPS6291221A (en) * | 1986-10-07 | 1987-04-25 | Asahi Glass Co Ltd | Process of treatment of gas containing dust |
| EP1076023A1 (en) * | 1999-08-11 | 2001-02-14 | SCHENKMANN & PIEL, VERFAHRENSTECHNIK GmbH & Co. KG | Cellular rotary valve |
| JP2002226052A (en) * | 2001-01-31 | 2002-08-14 | Aisin Sangyo Kk | Rotary valve |
| US20030200826A1 (en) * | 2002-04-26 | 2003-10-30 | Denso Corporation | Starting apparatus |
| CN2848786Y (en) * | 2005-08-29 | 2006-12-20 | 唐雄 | Air locking device |
| CN202803363U (en) * | 2012-08-17 | 2013-03-20 | 杭州富阳恒通机电工程有限公司 | Air-locking discharging valve of vertical mill |
| CN203048181U (en) * | 2012-12-12 | 2013-07-10 | 平顶山市威太电力设备有限公司 | Electric cindervalve with elastic sealing device impeller |
| CN103863850A (en) * | 2014-02-19 | 2014-06-18 | 江苏常净环保科技有限公司 | Unloading machine of dust remover with collecting bucket |
| JP2019085200A (en) * | 2017-11-02 | 2019-06-06 | シマダヤ株式会社 | Method for taking in and taking out noodles in pressure vessel for noodle bowl, and rotary valve used therefor |
| WO2020156750A1 (en) * | 2019-01-30 | 2020-08-06 | Rauch Landmaschinenfabrik Gmbh | Metering unit having a rotated cell wheel, and distribution machine having such a metering unit |
| CN112645065A (en) * | 2021-02-02 | 2021-04-13 | 鞍山亨通高炉设备工程技术有限公司 | Rotor air-locking feeder |
| CN214030545U (en) * | 2020-08-29 | 2021-08-24 | 山东墨龙石油机械股份有限公司 | A star discharge device for smelting reduction process |
| CN113731652A (en) * | 2021-08-09 | 2021-12-03 | 江西崇瑞环保科技有限公司 | Cyclone dust collector for environmental protection |
-
2022
- 2022-04-27 CN CN202210449806.3A patent/CN114832511A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0069849A1 (en) * | 1981-07-07 | 1983-01-19 | Hartmann Fördertechnik GmbH | Rotary valve for loading or unloading granular materials into or from conveying systems |
| JPS6291221A (en) * | 1986-10-07 | 1987-04-25 | Asahi Glass Co Ltd | Process of treatment of gas containing dust |
| EP1076023A1 (en) * | 1999-08-11 | 2001-02-14 | SCHENKMANN & PIEL, VERFAHRENSTECHNIK GmbH & Co. KG | Cellular rotary valve |
| JP2002226052A (en) * | 2001-01-31 | 2002-08-14 | Aisin Sangyo Kk | Rotary valve |
| US20030200826A1 (en) * | 2002-04-26 | 2003-10-30 | Denso Corporation | Starting apparatus |
| CN2848786Y (en) * | 2005-08-29 | 2006-12-20 | 唐雄 | Air locking device |
| CN202803363U (en) * | 2012-08-17 | 2013-03-20 | 杭州富阳恒通机电工程有限公司 | Air-locking discharging valve of vertical mill |
| CN203048181U (en) * | 2012-12-12 | 2013-07-10 | 平顶山市威太电力设备有限公司 | Electric cindervalve with elastic sealing device impeller |
| CN103863850A (en) * | 2014-02-19 | 2014-06-18 | 江苏常净环保科技有限公司 | Unloading machine of dust remover with collecting bucket |
| JP2019085200A (en) * | 2017-11-02 | 2019-06-06 | シマダヤ株式会社 | Method for taking in and taking out noodles in pressure vessel for noodle bowl, and rotary valve used therefor |
| WO2020156750A1 (en) * | 2019-01-30 | 2020-08-06 | Rauch Landmaschinenfabrik Gmbh | Metering unit having a rotated cell wheel, and distribution machine having such a metering unit |
| CN214030545U (en) * | 2020-08-29 | 2021-08-24 | 山东墨龙石油机械股份有限公司 | A star discharge device for smelting reduction process |
| CN112645065A (en) * | 2021-02-02 | 2021-04-13 | 鞍山亨通高炉设备工程技术有限公司 | Rotor air-locking feeder |
| CN113731652A (en) * | 2021-08-09 | 2021-12-03 | 江西崇瑞环保科技有限公司 | Cyclone dust collector for environmental protection |
Non-Patent Citations (1)
| Title |
|---|
| 张锐等: "刚性叶轮给料机运行中常见问题的改进", 《四川水泥》 * |
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Application publication date: 20220802 |