CN204522581U - A kind of gas filtration purifier breaking bl bridge layer with shock wave - Google Patents
A kind of gas filtration purifier breaking bl bridge layer with shock wave Download PDFInfo
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- CN204522581U CN204522581U CN201520119302.0U CN201520119302U CN204522581U CN 204522581 U CN204522581 U CN 204522581U CN 201520119302 U CN201520119302 U CN 201520119302U CN 204522581 U CN204522581 U CN 204522581U
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Abstract
The utility model relates to filter.For current filtering purifying apparatus filter adopt rigidity filter core time, filter is in running, bridge formation can be produced between rigid filter filter material, thus affect device and normally run, disclose a kind of gas filtration purifier breaking bl bridge layer with shock wave, comprise filter, set up air accumulator, pipeline that filter is connected with air accumulator and shock wave generator, pipeline stretches in filter, shock wave generator is arranged at pipeline gas outlet, shock wave generator axis tilt alpha angle aims at filter core bunch, and filter element is rigidity filter core.By shock wave generator, produce supersonic gas shock wave, shock wave blows down the material of arching, the dust of dead angle deposition, due to the pressure fluctuation of shock wave momentary strong, makes the black dirt on dust stratification face broken because of impact; Import the refracted wave in dust stratification, at substrate and grieshoch zero reflected at interfaces, interact with incidence wave and produce shearing, dust stratification is produced with substrate and is separated, thus thoroughly remove ash discharge blocking.
Description
Technical field
The present invention relates to a kind of filtering and purifying, particularly a kind of gas filtration purifier breaking bl bridge layer with shock wave.
Background technology
At present in productive life, many fields need to filter gas, to meet the needs of productive life, when the filter employing rigidity filter core of filtering and purifying, filter is in operation, can produce between rigid filter filter material and there is dust bridge, bridge formation refers to that dust forms domes between filter material, although filter has back-blowing device, but the bridge formation that dust at present is formed can not be blown off by back-blowing device again, the result that such phenomenon causes has a strong impact on gas filtration load, thus affects the normal operation of device, reduces filtering efficiency.
Utility model content
Technical problem to be solved in the utility model is, for the defect that above-mentioned prior art exists, provides a kind of gas filtration purifier breaking bl bridge layer with shock wave.
Technical scheme provided by the utility model is, a kind of gas filtration purifier breaking bl bridge layer with shock wave, comprise filter, set up air accumulator, pipeline that filter is connected with air accumulator and shock wave generator, pipeline stretches in filter, and shock wave generator is arranged at pipeline gas outlet, the axis tilt alpha angle of shock wave generator aims at filter core bunch, α is greater than 0 °, is less than 90 °, and described filter core is rigidity filter core.
By shock wave generator, with nitrogen, compressed air or other compressed gas for medium, take pressure release release tech, the supersonic gas of generation, shock wave and sound wave are directly abolished the bridge formation between filter core.Action intensity is large, and scope is wide.Shock wave is a kind of violent compressional wave, propagates and produce disturbance in air (medium).Air can sharply compressed after shock wave, and its pressure, temperature and density all produce limited raising.Due to the pressure fluctuation of shock wave momentary strong, a kind of effect of first pressing post-tensioning is produced to dust stratification, make the black dirt on dust stratification face broken because of impact; Import the refracted wave in dust stratification, also can at substrate and grieshoch zero reflected at interfaces, and interacts with incidence wave and produces shearing, dust stratification is produced with substrate and is separated, reach the effect of thorough destruction bridge formation
Particularly, described α angle is 20 ° to 89 °.
Empirical tests, in this angular range best results.
Particularly, described shock wave generator is Laval nozzle.
Laval nozzle is made up of two conical pipes, and one of them is collapsible tube, and another is convergent divergent channel, gas by the first half of high pressure flow nozzle, through after narrow larynx by latter half of effusion.This framework can make the speed of air-flow change because spraying the change of sectional area, makes air-flow from subsonic speed to velocity of sound, until accelerate to supersonic speed, and produces shock wave.
Further, the pipeline that described filter, air accumulator are connected arranges valve, and valve arranges and between air accumulator and shock wave generator, controls the opening and closing of air-flow with this.
Particularly, described valve is pulse valve.
Further, institute's storing gas of described air accumulator is nitrogen under pressure.
Further, institute's storing gas of described air accumulator is compressed air, also can be other compressed inert.
Accompanying drawing explanation
Fig. 1 is a kind of gas filtration purifier with shock wave broken arch blockage-clearing device;
Fig. 2 is Laval nozzle;
In Fig. 1: 1-air accumulator; 2-pulse valve; 3-Laval nozzle; 4-filtering gas entrance; 5-rigidity filter core; 6-filter; 7-filtering gas exports.
Detailed description of the invention
Concrete implementation example explanation will be done below to the utility model
As shown in Figure 1, need Purge gas to enter from filtering gas entrance 4, after filter 6 filters, export 7 from filtering gas and flow out.Filter core adopts rigidity filter core 5, adopts iron aluminium filter core as the filter core of filter membrane in this embodiment, operation steady in a long-term under the condition that can be greater than between 200 degrees Celsius to 550 degrees Celsius at gas temperature, and filter core can not be damaged.Filter is in operation, can produce between rigid filter filter material and there is dust bridge, bridge formation refers to that dust forms domes between filter material, although filter has back-blowing device, but the bridge formation that dust at present is formed can not be blown off by back-blowing device again, the result that such phenomenon causes has a strong impact on gas filtration load, thus affects the normal operation of device, reduces filtering efficiency.In the present embodiment, shock wave generator is the Laval nozzle shown in Fig. 2, and the inlet diameter A of Laval nozzle is 20-200mm, and throat diameter B is 10-100mm, and outlet diameter C is 20-200mm.During deashing, pulse valve 2 is opened fast, and the nitrogen under pressure of air accumulator 1 enters Laval nozzle 3, and bleed pressure is 0.15-2MpaG, and gas source temperature is 5 degrees Celsius to 500 degrees Celsius.Nitrogen produces supersonic speed clear stream after Laval nozzle 3, thus produces shock wave, acts on filter core and abolishes bridge formation.Nitrogen can sharply compressed after shock wave, and its pressure, temperature and density all produce limited raising, due to the pressure fluctuation of shock wave momentary strong, produces a kind of effect of first pressing post-tensioning to dust stratification, makes the black dirt on dust stratification face broken because of impact; Import the refracted wave in dust stratification, also can at substrate and grieshoch zero reflected at interfaces, and interacts with incidence wave and produce shearing, dust stratification is produced with substrate and is separated, reach the effect of thorough deashing, thus thorough releasing ash discharge blocking filter.
Claims (7)
1. one kind is broken the gas filtration purifier of bl bridge layer with shock wave, comprise filter (6), it is characterized in that: set up air accumulator (1), pipeline that filter (6) is connected with air accumulator (1) and shock wave generator, pipeline stretches in filter (6), shock wave generator is arranged at pipeline gas outlet, and the axis tilt alpha angle of shock wave generator aims at filter core, and α is greater than 0 °, be less than 90 °, described filter core is rigidity filter core.
2. a kind of gas filtration purifier breaking bl bridge layer with shock wave according to claim 1, is characterized in that: described α angle is 20 ° to 89 °.
3. a kind of gas filtration purifier breaking bl bridge layer with shock wave according to claim 1, is characterized in that: described shock wave generator is Laval nozzle (3).
4. a kind of gas filtration purifier breaking bl bridge layer with shock wave according to claim 1, it is characterized in that: the pipeline that described filter (6), air accumulator (1) are connected arranges valve, and valve is arranged between air accumulator (1) and shock wave process units.
5. a kind of gas filtration purifier breaking bl bridge layer with shock wave according to claim 4, is characterized in that: described valve is pulse valve (2).
6. a kind of gas filtration purifier breaking bl bridge layer with shock wave according to claim 1, is characterized in that: institute's storing gas of described air accumulator (1) is nitrogen under pressure.
7. a kind of gas filtration purifier breaking bl bridge layer with shock wave according to claim 1, is characterized in that: institute's storing gas of described air accumulator (1) is compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520119302.0U CN204522581U (en) | 2015-02-28 | 2015-02-28 | A kind of gas filtration purifier breaking bl bridge layer with shock wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520119302.0U CN204522581U (en) | 2015-02-28 | 2015-02-28 | A kind of gas filtration purifier breaking bl bridge layer with shock wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204522581U true CN204522581U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520119302.0U Active CN204522581U (en) | 2015-02-28 | 2015-02-28 | A kind of gas filtration purifier breaking bl bridge layer with shock wave |
Country Status (1)
| Country | Link |
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| CN (1) | CN204522581U (en) |
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2015
- 2015-02-28 CN CN201520119302.0U patent/CN204522581U/en active Active
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