CN101391166B - Conduction type pulse blowing deashing method with velocity difference jets - Google Patents
Conduction type pulse blowing deashing method with velocity difference jets Download PDFInfo
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- CN101391166B CN101391166B CN2008102008318A CN200810200831A CN101391166B CN 101391166 B CN101391166 B CN 101391166B CN 2008102008318 A CN2008102008318 A CN 2008102008318A CN 200810200831 A CN200810200831 A CN 200810200831A CN 101391166 B CN101391166 B CN 101391166B
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- filter bag
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Abstract
The invention relates to a drainage type pulse jet dust cleaning method with velocity difference jet, which comprises the following steps: an injection pipe b and an injection pipe a connected with a central jet pipe on the central axis of a jetting short pipe are controlled by the same pulse valve, and jet the compressed air at the same time; central jet and peripheral torus small hole jet form the velocity difference jet due to different velocities; the velocity difference jet enters a drainage pipe, and drains the clean air in a clean room in the meanwhile; a certain distance is kept between the lower end of the drainage pipe and the port of a filter bag, herein the velocity difference jet again drains mass clean air in the clean room and jets the clean air into the filter bag through the port of the filter bag; and the velocity difference jet is effectively sprayed at every part of the filter bag after entering the filter bag, and the peripheral torus small hole jet can effectively induce the central jet so as to lengthen the central jet and effectively clean the dust. The invention has no need of Venturi tube, so the dust on filtering materials with the height close to 200mm to 400mm of the filter bag port can also be effectively cleaned.
Description
Technical field
The present invention relates to the used a kind of pulse jetting deashing method in environmental protection field, particularly relate to a kind of conduction type pulse blowing ash removal method of belt speed difference jets.
Background technology
The pulse jetting deashing method be a kind of employing periodically in filter bag or outside the compressed air of jetting reach the high-effective dust-removing method of removing filter bag surfaces externally and internally laying dust, it has advantages such as administrative expenses are low, efficiency of dust collection is high, the filter bag operating period is long, floor space is little, has therefore obtained using widely in industry production departments such as cement, chemical industry, electric power, metallurgy.The problem that pulse jetting deashing method in the practical application at present exists has: 1, in order to keep the pressure of winding-up, pulse spraying equipment often is equipped with Venturi tube, and the installation of Venturi tube will cause can't deashing in the height of 200mm-400mm near the filtrate of filter pocket mouths.2, because the outlet diameter of Venturi tube dwindles, and the air-flow of process filtrate will pass card in the local acceleration of the necking of Venturi tube, this can make the overall resistance of dust pelletizing system increase.3, it is less that the installation of Venturi tube causes drainage tolerance, and drainage tolerance is about 2:1 with the ratio of winding-up compression tolerance.4, the jet length that arrives in the filter bag is short, and ash-removal effect is general.
Granted publication number discloses a kind of pulse blowing bag type dust precipitator with conduction type spray nozzle device for the patent of invention of CN100998483A.The gas of the disclosed pulse blowing bag type dust precipitator of above-mentioned patent of invention in can the drainage clean room is in injection system, improved ash-removal effect, because its winding-up air-flow is smooth-going, the filter bag of jetting uniformly, avoid filter bag very easily to be blown bad result, prolonged the service life of filter bag.But the jet length that described pulse bag type dust collector sprays in the filter bag is short, can not carry out comprehensive deashing to the filter bag bottom, simultaneously owing to be provided with Venturi tube in this pulse spraying equipment, the bleed flow-rate ratio is less, can not effectively remove near the dust stratification in the height of filter pocket mouths 200mm-400mm.
Summary of the invention
Technical problem to be solved by this invention provides a kind of conduction type pulse blowing ash removal method of belt speed difference jets, it not only can effectively be removed near the dust stratification in the height of filter pocket mouths 200mm-400mm, the total pressure of dust pelletizing system is reduced, and the length of elongation center's jet effectively, thereby more effectively carry out deashing.
The technical solution adopted for the present invention to solve the technical problems is: a kind of conduction type pulse blowing ash removal method of belt speed difference jets is provided, comprises the following steps:
(1) be arranged on winding-up short tube central axis on the winding-up pipe b that connects of central jet pipe and winding-up manage a and spray compressed air at synchronization;
(2) anchor ring orifice jet around the jet orifice ejection on the anchor ring forms around the compressed air warp of winding-up pipe a ejection, the compressed air of winding-up pipe b ejection sprays through the central jet hole, thereby the formation central jet, central jet forms fast difference jets with anchor ring orifice jet on every side because of speed is different;
(3) central jet enters drainage tube with the fast difference jets of anchor ring orifice jet formation on every side, the clean air in the clean room of drainage simultaneously;
(4) lower end of drainage tube and filter pocket mouths leave certain distance, fast difference jets herein once more in the drainage clean room a large amount of clean airs spray into filter bag through filter pocket mouths;
(5) winding-up uniformly was at each position of filter bag after fast difference jets entered filter bag, jet can be induced central jet effectively on every side, having prolonged the length of central jet, and is entrainmenting central jet near filter bag limit wall, increase the intensity of jet, thereby carried out effective deashing.
Described winding-up pipe a and winding-up pipe b are controlled by same pulse valve.
The anchor ring orifice jet is produced by the compressed air ejection of winding-up pipe a ejection around the described central jet hole.
Described central jet and the fast difference jets that anchor ring orifice jet produces around it enter filter bag by the drainage tube drainage.The present invention compared with prior art has following beneficial effect
1, in fast difference jets, the anchor ring orifice jet can induce central jet to prolong the length of jet effectively on every side, sprays into the bottom of filter bag, and entrainmenting central jet near filter bag limit wall, has increased the intensity of jet, carries out deashing better.
2, do not need to install Venturi tube among the present invention, air-flow can be removed effectively near the dust stratification in the height of filter pocket mouths 200mm-400mm.
3, in winding-up short tube, drainage tube and filter pocket mouths drainage is arranged all, drainage tolerance has obtained significant increase.
4, method technology of the present invention is simple, easy to operate, very easily promotes the use of and can transform existing apparatus.
Description of drawings
Fig. 1 is the structural representation of the conduction type pulse blowing deashing device of a kind of belt speed difference jets of the present invention.
Fig. 2 is the generalized section along A among Fig. 1-A line.
Fig. 3 is the internal structure schematic diagram of the conduction type pulse blowing deashing device of a kind of belt speed difference jets of the present invention.
Fig. 4 is the user mode schematic diagram of the conduction type pulse blowing deashing device of a kind of belt speed difference jets of the present invention.
Among the figure: 1. a is managed in winding-up, 2. winding-up pipe b, 3. winding-up short tube, 4. drainage tube, 5. central jet pipe, 6. filter pocket mouths, 7. filter bag, 8. central jet hole, 9. the little jet orifice around the central jet hole, the 10. winding-up jet among the winding-up pipe a, the winding-up jet among the 11. winding-up pipe b, 12. anchor ring orifice jet on every side, 13. central jets.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, be provided with winding-up pipe a, winding-up pipe b, winding-up short tube, drainage tube, central jet pipe, central jet hole, parts such as jet orifice on the anchor ring on every side in the specific embodiment of the conduction type pulse blowing ash removal method of a kind of belt speed difference jets of the present invention.
Be provided with a winding-up pipe a1 in the conduction type pulse blowing ash removal method specific embodiment of a kind of belt speed difference jets of the present invention, the spout place of winding-up pipe a1 is provided with a winding-up short tube 3, what connect with short tube 3 lower ends of jetting is drainage tube 4.The central axis of winding-up short tube 3 is provided with a central jet pipe 5, in the bottom of winding-up short tube 3 a central jet hole 8 is arranged, and is provided with the little jet orifice 9 of a circle on anchor ring around the described central jet hole 8.Winding-up short tube 3 and central jet pipe 5 are connected in respectively on winding-up pipe a1 and the winding-up pipe b2, and described winding-up pipe a1 and winding-up pipe b2 can be controlled by same pulse valve.
The conduction type pulse blowing ash removal method of a kind of belt speed difference jets of the present invention is when carrying out deashing to the filter bag surface, to make compressed air winding-up simultaneously in winding-up pipe a1 and winding-up pipe b2, the compressed air of central jet pipe 5 winding-ups forms central jet 13, anchor ring orifice jet 12 around the compressed air of little jet orifice 9 ejections around the central jet hole 8 on the anchor ring forms, the speed of central jet 13 and anchor ring orifice jet 12 on every side is different then to form fast difference jets, described fast difference jets blows to drainage tube 4, blows to filter bag 7 again.In the winding-up process, anchor ring orifice jet 12 can induce central jet 13 to prolong the length of jet effectively on every side, but gases a large amount of around in the drainage clean room are in the winding-up air-flow, winding-up throughput and intensity have been increased, in addition to also carrying out deashing effectively near the filtrate in the height of filter pocket mouths 200mm-400mm.
Claims (1)
1. the conduction type pulse blowing ash removal method of a belt speed difference jets comprises the following steps:
(1) be arranged on winding-up short tube central axis on the winding-up pipe b (2) that connects of central jet pipe and winding-up manage a (1) and spray compressed air at synchronization; Wherein the spout place of winding-up pipe a (1) is provided with a winding-up short tube (3), what connect with short tube (3) lower end of jetting is drainage tube (4); The central axis of winding-up short tube (3) is provided with a central jet pipe (5), in the bottom of winding-up short tube (3) a central jet hole (8) is arranged, and is provided with the little jet orifice (9) of a circle on anchor ring around the described central jet hole (8); Winding-up short tube (3) and central jet pipe (5) are connected in respectively on winding-up pipe a (1) and the winding-up pipe b (2), and described winding-up pipe a (1) and winding-up pipe b (2) are controlled by same pulse valve;
(2) jet around the little jet orifice ejection on the anchor ring forms around the compressed air warp of winding-up pipe a (1) ejection, ejection forms central jet to the compressed air of winding-up pipe b (2) ejection through the central jet hole, and central jet forms fast difference jets with jet on every side because of speed is different;
(3) fast difference jets enters drainage tube, the clean air in the clean room of drainage simultaneously;
(4) lower end of drainage tube and filter pocket mouths leave certain distance, fast difference jets herein once more in the drainage clean room a large amount of clean airs spray into filter bag through filter pocket mouths;
(5) winding-up was at each position of filter bag uniformly after fast difference jets entered filter bag, and jet can be induced central jet effectively on every side, carries out effective deashing with the length that has prolonged central jet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102008318A CN101391166B (en) | 2008-10-07 | 2008-10-07 | Conduction type pulse blowing deashing method with velocity difference jets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102008318A CN101391166B (en) | 2008-10-07 | 2008-10-07 | Conduction type pulse blowing deashing method with velocity difference jets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101391166A CN101391166A (en) | 2009-03-25 |
| CN101391166B true CN101391166B (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102008318A Expired - Fee Related CN101391166B (en) | 2008-10-07 | 2008-10-07 | Conduction type pulse blowing deashing method with velocity difference jets |
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| Country | Link |
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| CN (1) | CN101391166B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648952B (en) * | 2016-07-26 | 2023-09-26 | 上海境业环保能源科技股份有限公司 | Venturi jetting pipe for dust remover |
| CN116510419B (en) * | 2022-12-01 | 2023-09-22 | 大连理工大学盘锦产业技术研究院 | V-shaped flow control particle coalescence device with coaxial speed difference jet flow |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537450Y (en) * | 2002-03-26 | 2003-02-26 | 姜凤有 | Strong ash cleaning device of pulse spray bag type dust remover |
| CN2845890Y (en) * | 2005-12-01 | 2006-12-13 | 邱敏 | Spray blowing ash cleaner for pulse bag type dust remover |
| CN100998483A (en) * | 2006-01-11 | 2007-07-18 | 上海市凌桥环保设备厂有限公司 | Pulse blowing bag type dust-collector having guiding type nozzle |
-
2008
- 2008-10-07 CN CN2008102008318A patent/CN101391166B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537450Y (en) * | 2002-03-26 | 2003-02-26 | 姜凤有 | Strong ash cleaning device of pulse spray bag type dust remover |
| CN2845890Y (en) * | 2005-12-01 | 2006-12-13 | 邱敏 | Spray blowing ash cleaner for pulse bag type dust remover |
| CN100998483A (en) * | 2006-01-11 | 2007-07-18 | 上海市凌桥环保设备厂有限公司 | Pulse blowing bag type dust-collector having guiding type nozzle |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2003-103128A 2003.04.08 |
| JP特开平5-329318A 1993.12.14 |
| JP特开平5-96113A 1993.04.20 |
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| CN101391166A (en) | 2009-03-25 |
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Granted publication date: 20101201 Termination date: 20131007 |