CN109225694A - Adjustable melange effect deashing device for pulse blow filter - Google Patents
Adjustable melange effect deashing device for pulse blow filter Download PDFInfo
- Publication number
- CN109225694A CN109225694A CN201811166347.8A CN201811166347A CN109225694A CN 109225694 A CN109225694 A CN 109225694A CN 201811166347 A CN201811166347 A CN 201811166347A CN 109225694 A CN109225694 A CN 109225694A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- adjustable
- expansion segment
- section
- contraction section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
-
- 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
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
Abstract
The present invention provides the adjustable melange effect deashing devices for pulse blow filter, including jet pipe, the nozzle being connected to jet pipe, multiple groups nozzle is arranged along its length direction interval in jet pipe, nozzle is constituted by round tube and along the perforative multi-stage nozzle channel of round tube axial direction, nozzle passage is the stable section being sequentially connected along its length direction, contraction section and expansion segment, stable section is cylinder, contraction section is reverse frustoconic, expansion segment is truncated cone-shaped, contraction section connect with expansion segment region be nozzle throat, the adjusting component of adjustable nozzles throat opening area is set on stable section.The present invention passes through the combination and reconstruct first shunk the nozzle expanded afterwards and adjust plug, adjusts area of nozzle throat, obtains the jetting performance under different operating loaded-up condition and different blowing operating conditions, realizes efficient deashing requirement.Apparatus of the present invention are widely portable to the jetting deashing using equipments such as pipe, the sack cleaner of tubular class filter material dedusting and filter drum type precipitators.
Description
Technical field
The present invention relates to pocket types, filter drum type precipitator jetting deashing technical field, and in particular to one kind is used for pulse jet
The adjustable melange effect deashing device of deduster.
Background technique
As environmental requirement is increasingly strict, equipment --- the dedusting of the discharge of a large amount of dusty gases caused by reply industry
Device just has higher equipment performance requirement.While equipment enlarging, high filter efficiency, lower operation energy consumption,
The gas of longer service life, such as desulphurization denitration etc. discharges comprehensive processing function, causes deduster in addition to using normal
Except this kind of socket shape filter material of Weaving type filter bag, the filter cartridge type for the various materials seen, long bag and overlength bag, ceramic tube, stainless steel
Examination application is also researched and developed or even put into the deduster of the novel filtering material of the sockets shape such as network management.It is this from flexibility to rigidity, conventional
The research and development of the socket shape filter material deduster developed to overlength, so that now widely used pulse jetting deashing technology, may go out
Now blowing intensity is insufficient, is blown between nozzle not enough uniformly, the technical problems such as ash-removal effect is undesirable；It researches and develops a kind of efficient, low
Consumption, the novel blowing device of energy is just particularly important by force.
Summary of the invention
Aiming at the shortcomings in the prior art with problem, the present invention is intended to provide a kind of for the adjustable of pulse blow filter
Formula melange effect deashing device.
The present invention is achieved by the following technical programs:
For the adjustable melange effect deashing device of pulse blow filter, including jet pipe, the nozzle being connected to jet pipe,
Multiple groups nozzle is arranged along its length direction interval in jet pipe, and nozzle is by round tube and along the perforative multisection type of round tube axial direction
Nozzle passage is constituted, and nozzle passage is the stable section, contraction section and expansion segment being sequentially connected along its length direction, and stable section is
Cylindrical, contraction section is reverse frustoconic, expansion segment is truncated cone-shaped, contraction section connect with expansion segment region for nozzle throat, surely
Determine the adjusting component that adjustable nozzles throat opening area is set in section.
Further, adjusting component includes columnar bracket, multiple groups wing plate and plug, and bracket is fixed on stable section inner cavity
In, mid-stent is cavity, and wing plate is uniformly set on the diameter line of bracket cavity, and bracket and wing plate form class spoke knot
Structure, wing plate is two groups and is mutually perpendicular to that perforative mounting hole, mounting hole and wing plate is arranged in multiple groups wing plate joint in specific implementation
The erection support of plug is constituted, plug is connect by mounting hole with wing plate.
Further, plug by the rectification head of curved surface awl shape, cylindrical threaded rod and back taper tapered rods structure
At the internal screw thread that setting is mutually matched with threaded rod in mounting hole.
Further, be between contraction section and expansion segment it is detachable separate, be connected through a screw thread assembly realize contraction section and
The symmetrical connecting stud of multiple groups is arranged, on the outside of expansion segment in reconstruct between expansion segment specially on the round tube on the outside of contraction section
Connecting hole corresponding with connecting stud is set on round tube.
Further, contraction section is quintic curve streamline, and stablizing segment length is 15-20mm, controls throat and discharge area
Than 8 ° -12 ° of the expansion segment angle of flare, expanding segment length:
Wherein, in formula, D3For outlet diameter, D2For throat diameter, θ is the expansion segment angle of flare, L2To expand segment length.
Compared with prior art, beneficial effect of the present invention includes:
(1) nozzle of the present invention is using the structure expanded afterwards, while the adjustable variation of throat opening area is first shunk, so that compressed gas
Body realizes different swelling states after flowing through nozzle, generates high-speed jet and shock wave very noisy；The sound wave effect that very noisy generates
Show that frequency of sound wave and acoustic pressure cause filter bag that high-frequency vibration occurs, so that dust layer is loosely organized, filter bag vibrating inertia force increases
Greatly, the double effect quick-fried by high velocity stream and forte generates apparent removing to the dust filter cake adhered on deduster pipe filter material
Efficient deashing and the regeneration of deduster filter material are realized in effect.
(2) present invention be suitable for the deduster of the sockets shape filter material such as pocket type, filter cartridge type cement, power generation, metallurgy, rubber,
The filter material jetting deashing of the dust medium of multiple industrial circles such as waste incineration.
(3) present invention realizes melange effect formula deashing high-intensitive, that forte is quick-fried by multiinjector on jet pipe, and intensity is equal
It is even, adjustable, stable.
(4) present invention adjusts the class spoke architecture that component internal uses low air flow resistance, in conjunction with the song adjusted at the top of plug
Face cone forming head plays rectified action to high-speed flow jointly.
(5) cleaning efficiency of the present invention is residual on filter bag after primary blowing compared with the traditional blowing device currently generallyd use
It deposits Dust Capacity and is about reduced to original 1/3, effect promoting is obvious.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the schematic perspective view of melange effect nozzle of the invention.
Fig. 3 is the schematic perspective view after melange effect nozzle of the invention is vertically splitted.
Fig. 4 is the schematic perspective view of adjusting component of the invention.
Fig. 5 is the structural schematic diagram of plug of the invention.
Fig. 6 is the label schematic diagram of melange effect nozzle of the invention.
Fig. 7 is adjustable nozzle arrangements schematic diagram of the invention.
Illustrate: 1- jet pipe, 2- nozzle, 21- round tube, 22- stable section, 23- contraction section, 24- expansion segment, 25- are adjusted
Component, 251- bracket, 252- wing plate, 253- mounting hole, 254- plug, 2541- rectify head, 2542- threaded rod, 2543- wedge shape
Stick, 26- connecting stud, 27- connecting hole.
L0Stablize segment length, L1Shrink segment length, L2Expand segment length；D1Inlet diameter, D2Throat diameter, D3Go out
Mouth diameter.
Specific embodiment
With reference to the accompanying drawing, the present invention is further described.
Pulse blow filter is removed by the method for blowing pressurized air to be adhered on filter medium (cloth bag or filter cylinder)
Dust, pulse dust collector is with the extension of filtration time, and the dust layer constantly product on filter medium is thick, and the resistance of deduster is continuous
Rise, need to carry out deashing to filter medium when its resistance rises to certain value, so deashing device is to influence deduster matter
One of amount, service life and important feature of efficiency.
The channel of the air flow blowing outlet of deashing device of the present invention is first to shrink to expand afterwards, compared with low flow velocity or is in a certain pressure
Cataclysm formation shock wave occurs gas under power for flow velocity and pressure after entering, and gas first passes through contraction section compression flow velocity and pressure is aobvious
It writes and increases, using supersonic airstream and very noisy is formed after expansion segment, violent fluctuation and pressure fluctuation are generated, so that dust
Layer is quickly completely separated with filter medium because of impact, realizes efficient ash-removal effect.
Air-flow expands pipeline later by contraction section critical cross-section, then the downstream physical boundary at pipe outlet section
When condition meets certain requirements, flow velocity can become hypersonic flow from sonic flow, and this pipe shape expanded afterwards that first shrinks is
The necessary condition of hypersonic flow is obtained from initial sub-critical flow.
Nozzle is to realize consecutive variations of the sub-critical flow to hypersonic flow, in addition to geometrical condition, it is necessary to be cut to nozzle exit
The environmental pressure (extraneous back-pressure) in face downstream makes limitation, guarantees that the gas pressure intensity of jet area must be up to or over
Back-pressure value.To given inlet pressure, different outlet pressures is realized, then the ratio different with environmental pressure because of outlet pressure
Different flow expansion states can be generated, such as crosses expansion, owe swelling state, the size by changing throat opening area can realize this
One process obtains different outlet pressures, realizes adjustable.For realizing supersonic speed, it is straight that diminution throat is adjusted by plug
Diameter realizes that outlet pressure is greater than environmental pressure, and expansion not exclusively then continues accelerated expansion, reaches velocity of sound and realizes sonic boom.Its principle
Corresponding formula are as follows:
Wherein, in formula (1) (2) (3), D3For outlet diameter, D2For throat diameter, θ is the expansion segment angle of flare, L2For expansion
Segment length, P are inlet pressure, P3For outlet pressure, M3For exit Mach number, A3For exit area, A2For throat section
Product, k are adiabatic exponent (for air, k=1.4).
Sonic boom is realized to make nozzle reach velocity of sound, and technical solution of the embodiment of the present invention is as follows.
As shown in Figure 1, being used for the adjustable melange effect deashing device of pulse blow filter, including jet pipe 1 and jet pipe
Multiple groups nozzle 2 is arranged along its length direction interval in the nozzle 2 of 1 connection, jet pipe 1.
As shown in Figures 2 and 3, nozzle 2 is the nozzle of melange effect, is passed through by round tube 21 and along 21 axial direction of round tube
The multi-stage nozzle channel worn, nozzle passage are the stable section 22 being sequentially connected, contraction section 23 and expansion along its length direction
Section 24, stable section 22 is cylinder, contraction section 23 is reverse frustoconic, expansion segment 24 is truncated cone-shaped, and contraction section connects with expansion segment
Region is the throat of nozzle, and the adjusting component 25 of adjustable nozzles throat opening area is arranged on stable section 22.
As shown in figure 4, adjusting component 25 includes columnar bracket 251, multiple groups wing plate 252 and plug 254, bracket 251
It is fixed in 22 inner cavity of stable section.The stable section 22 of bracket 251 and nozzle is integral type in specific implementation, is in the middle part of bracket 251
Cavity, wing plate 252 are uniformly set on the diameter line of 251 cavity of bracket, so that bracket 251 and wing plate 252 form class wheel
Spoke structure, wing plate 252 is two groups and is mutually perpendicular to that perforative mounting hole is arranged in 252 joint of multiple groups wing plate in specific implementation
253, mounting hole 253 and wing plate 252 constitute the erection support of plug 254, and plug 254 is connected by mounting hole 253 and wing plate 252
It connects.
As shown in figure 5, rectification head 2541, cylindrical threaded rod 2542 and back taper of the plug 254 by curved surface awl shape
The tapered rods 2543 of shape are constituted, the internal screw thread that setting is mutually matched with threaded rod 2542 in mounting hole 253, in specific implementation core
Stick 254 is connect with mounting hole 253 by threaded rod 2542 and is mounted in wing plate 252.Pass through the plug 254 of different tapered rods sizes
Change throat opening area；Or turn threaded rod 2542, plug 254 is vertically moved, so that tapered rods when tapered rods 2543 pass through throat
2543 cross-section variations, and then change throat opening area.
Preferably, as shown in fig. 7, being detachably to separate between contraction section 23 and expansion segment 24, it is connected through a screw thread assembly
Realize the reconstruct between contraction section 23 and expansion segment 24, specially setting multiple groups symmetrically connect on the round tube 21 in 23 outside of contraction section
Connect stud 26, setting connecting hole 27 corresponding with connecting stud 26 on the round tube 21 in 24 outside of expansion segment.
Preferably, as shown in fig. 6, contraction section 23 is quintic curve streamline, 24 length of stable section is 15-20mm, controls larynx
Portion and discharge area ratio, 8 ° -12 ° of the expansion segment angle of flare, the above-mentioned contraction section and expansion segment design of setting according to gas dynamics,
Reach velocity of sound and realizes sonic boom.
The above only expresses the preferred embodiment of the present invention, and the description thereof is more specific and detailed, but can not be because
This and be interpreted as limitations on the scope of the patent of the present invention.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, several deformations can also be made, improves and substitutes, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (5)
1. being used for the adjustable melange effect deashing device of pulse blow filter, including jet pipe (1) and the jet pipe (1) are even
Logical nozzle (2), the jet pipe (1) is along nozzle (2) described in its length direction interval setting multiple groups, and the nozzle (2) is by justifying
It manages (21) and is constituted along the perforative multi-stage nozzle channel of round tube (21) axial direction, it is characterised in that: the nozzle is logical
Road is the stable section (22) being sequentially connected, contraction section (23) and expansion segment (24), the stable section (22) along its length direction
For cylindrical, described contraction section (23) be reverse frustoconic, the expansion segment (24) is truncated cone-shaped, the contraction section (23) and expansion
Section (24) connects the throat that region is nozzle, and the adjusting component of adjustable nozzles throat opening area is arranged on the stable section (22)
(25)。
2. the adjustable melange effect deashing device according to claim 1 for pulse blow filter, feature exist
In: the adjusting component (25) includes columnar bracket (251), multiple groups wing plate (252) and plug (254), the bracket
(251) class spoke architecture is formed with wing plate (252), perforative mounting hole (253) is arranged in wing plate (252) joint described in multiple groups；
The plug (254) is by the rectification head (2541) of curved surface awl shape, the wedge shape of cylindrical threaded rod (2542) and back taper
Stick (2543) is constituted, the internal screw thread that setting is mutually matched with the threaded rod (2542) in the mounting hole (253), the plug
(254) it is connect by the mounting hole (253) with the wing plate (252).
3. the adjustable melange effect deashing device according to claim 1 for pulse blow filter, feature exist
In: the contraction section (23) is quintic curve streamline, and stable section (22) length is 15-20mm, and the expansion segment (24) is expanded
8 ° -12 ° of subtended angle, the length L of the expansion segment (24)2:
In above-mentioned formula, D3For outlet diameter, D2For throat diameter, θ is the expansion segment angle of flare, L2To expand segment length.
4. -3 any adjustable melange effect deashing device for pulse blow filter according to claim 1,
It is characterized in that: being detachable separate between the contraction section (23) and expansion segment (24).
5. the adjustable melange effect deashing device according to claim 4 for pulse blow filter, feature exist
In: the symmetrical connecting stud of multiple groups (26) are set on the round tube (21) on the outside of the contraction section (23), the expansion segment (24) is outside
Connecting hole (27) corresponding with the connecting stud (26) is set on the round tube (21) of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811166347.8A CN109225694A (en) | 2018-09-30 | 2018-09-30 | Adjustable melange effect deashing device for pulse blow filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811166347.8A CN109225694A (en) | 2018-09-30 | 2018-09-30 | Adjustable melange effect deashing device for pulse blow filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109225694A true CN109225694A (en) | 2019-01-18 |
Family
ID=65055060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811166347.8A Withdrawn CN109225694A (en) | 2018-09-30 | 2018-09-30 | Adjustable melange effect deashing device for pulse blow filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109225694A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112755826A (en) * | 2021-01-05 | 2021-05-07 | 华东理工大学 | Device and method for enhancing liquid-liquid emulsification |
| CN112755926A (en) * | 2021-01-05 | 2021-05-07 | 华东理工大学 | Device and method for enhancing liquid-liquid reaction |
| CN112827216A (en) * | 2021-01-05 | 2021-05-25 | 华东理工大学 | Device and method for enhancing liquid-liquid extraction |
| CN113101758A (en) * | 2021-04-01 | 2021-07-13 | 九江七所精密机电科技有限公司 | Supersonic blowing device for online self-cleaning of air filtering system |
| CN113532837A (en) * | 2021-08-19 | 2021-10-22 | 中国航发贵阳发动机设计研究所 | Test tool structure for verifying pressure of special-shaped spray pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6291233A (en) * | 1985-10-16 | 1987-04-25 | Canon Inc | Flow control device for flow of fine particles |
| US6016832A (en) * | 1997-04-16 | 2000-01-25 | Woodward Governor Company | Valve for controlling gas mass flow |
| CN102744166A (en) * | 2012-07-04 | 2012-10-24 | 大连理工大学 | Core-adjustable variable-cross-section-tube ultrasonic condensation cyclone separator |
| CN103032581A (en) * | 2012-12-31 | 2013-04-10 | 中国人民解放军国防科学技术大学 | Continuously-adjustable sonic nozzle |
| CN105181290A (en) * | 2015-10-13 | 2015-12-23 | 北京航天长征飞行器研究所 | High-temperature jet pipe used for combustion gas flow wind tunnel |
| CN106438108A (en) * | 2016-08-26 | 2017-02-22 | 南京理工大学 | Large-regulation-ratio type fuel gas flow regulation device for solid rocket ramjet |
-
2018
- 2018-09-30 CN CN201811166347.8A patent/CN109225694A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6291233A (en) * | 1985-10-16 | 1987-04-25 | Canon Inc | Flow control device for flow of fine particles |
| US6016832A (en) * | 1997-04-16 | 2000-01-25 | Woodward Governor Company | Valve for controlling gas mass flow |
| CN102744166A (en) * | 2012-07-04 | 2012-10-24 | 大连理工大学 | Core-adjustable variable-cross-section-tube ultrasonic condensation cyclone separator |
| CN103032581A (en) * | 2012-12-31 | 2013-04-10 | 中国人民解放军国防科学技术大学 | Continuously-adjustable sonic nozzle |
| CN105181290A (en) * | 2015-10-13 | 2015-12-23 | 北京航天长征飞行器研究所 | High-temperature jet pipe used for combustion gas flow wind tunnel |
| CN106438108A (en) * | 2016-08-26 | 2017-02-22 | 南京理工大学 | Large-regulation-ratio type fuel gas flow regulation device for solid rocket ramjet |
Non-Patent Citations (2)
| Title |
|---|
| 王克印等: "缩扩型超音速喷管的设计与仿真", 《中国工程机械学报》 * |
| 钟亮明: "脉冲喷吹长滤袋清灰性能实验研究", 《南昌大学学报（工科版）》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112755826A (en) * | 2021-01-05 | 2021-05-07 | 华东理工大学 | Device and method for enhancing liquid-liquid emulsification |
| CN112755926A (en) * | 2021-01-05 | 2021-05-07 | 华东理工大学 | Device and method for enhancing liquid-liquid reaction |
| CN112827216A (en) * | 2021-01-05 | 2021-05-25 | 华东理工大学 | Device and method for enhancing liquid-liquid extraction |
| CN112827216B (en) * | 2021-01-05 | 2022-03-01 | 华东理工大学 | Device and method for enhancing liquid-liquid extraction |
| CN113101758A (en) * | 2021-04-01 | 2021-07-13 | 九江七所精密机电科技有限公司 | Supersonic blowing device for online self-cleaning of air filtering system |
| CN113532837A (en) * | 2021-08-19 | 2021-10-22 | 中国航发贵阳发动机设计研究所 | Test tool structure for verifying pressure of special-shaped spray pipe |
| CN113532837B (en) * | 2021-08-19 | 2022-11-18 | 中国航发贵阳发动机设计研究所 | Test tool structure for verifying pressure of special-shaped spray pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109225694A (en) | Adjustable melange effect deashing device for pulse blow filter | |
| WO2014079160A1 (en) | Self-oscillating nozzle and pulse-aided back-flushing ash cleaning apparatus of filter equipped with self-oscillating nozzle | |
| WO2022105752A1 (en) | Method and device for removing impurities from granular material | |
| JP6047523B2 (en) | Coanda injector | |
| CN100450631C (en) | Low noise pneumatic jet nozzle | |
| US5375771A (en) | Advanced sootblower nozzle design | |
| CN108452628A (en) | A kind of wet scrubber of strainer high-frequency vibration | |
| JP4580985B2 (en) | Method and apparatus for generating jet of dry ice particles | |
| RU133432U1 (en) | GAS FLOW PARTICIPATOR | |
| RU102197U1 (en) | ULTRASONIC COAGULATION CAMERA | |
| CN206485814U (en) | A kind of strength arch breaking apparatus | |
| CN216062404U (en) | Movable blowing device for dust remover | |
| RU2413571C1 (en) | Ventury scrubber | |
| CN204522545U (en) | Pneumatic filter and nozzle thereof | |
| CN202185234U (en) | Low-resistance Venturi tube for bag dust remover | |
| CN107774080B (en) | A kind of gas-liquid separation device for mass transfer exchange | |
| RU2630087C1 (en) | Air cleaning device in vibration-boiling layer of liquid | |
| RU131307U1 (en) | GAS FLOW PARTICLES CAPTURE DEVICE | |
| CN216937101U (en) | Material impurity removing device | |
| RU195672U1 (en) | DIRECT CYCLON | |
| CN209771720U (en) | Pulse cloth tube dust remover | |
| RU181016U1 (en) | Ultrasonic axisymmetric nozzle | |
| SU1510892A1 (en) | Apparatus for cleaning gases | |
| CN204522581U (en) | A kind of gas filtration purifier breaking bl bridge layer with shock wave | |
| RU144702U1 (en) | DEVICE FOR CLEANING GASES FROM DUST |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190118 |
|
| WW01 | Invention patent application withdrawn after publication |