CN2463060Y - Self-exciting stomizing pressure nozzle - Google Patents
Self-exciting stomizing pressure nozzle Download PDFInfo
- Publication number
- CN2463060Y CN2463060Y CN 00267989 CN00267989U CN2463060Y CN 2463060 Y CN2463060 Y CN 2463060Y CN 00267989 CN00267989 CN 00267989 CN 00267989 U CN00267989 U CN 00267989U CN 2463060 Y CN2463060 Y CN 2463060Y
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- self
- pressure nozzle
- atomizing
- cone
- excitation
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Abstract
The utility model relates to a self-exciting atomizing pressure nozzle, which belongs to the technical field of the gas purification for combustion products. The utility model comprises a cylindrical shell, and a hollow spiral element is arranged in the shell. The front end of the shell is provided with a feed liquid inlet with connecting screw threads, the rear part is a cone, and the end part of the cone is a jet with a divergence angle. The jetted feed liquid is composed of flowing liquid stream which is rotated along the periphery, and straight-through fast liquid stream on a center, and the two strands of liquid stream are converged on front of an outlet. Mutual friction is generated because of the speed difference of the two strands of liquid stream, and the self-exciting atomization of the body of the liquid stream is formed. Consequently, the atomizing effect which is superior to the atomizing effect of the conventional pressure nozzle is obtained.
Description
The utility model belongs to the combustion products field of purification, particularly is used for the structural design of the drive nozzle of gas cleaning.
In gas cleaning, the feed liquid that needs to be used to remove the flue gas harmful substance is carried out aerosol dispersion, increases the specific area of feed liquid, quickens the carrying out of mass transport process, so that the more effective purification purpose that reaches.At present, the atomising device that is used for the feed liquid atomizing has three kinds, i.e. air-flowing type, pressure type and rotary.Pressure atomizer, promptly pressure nozzle is to use many a kind ofly, mainly comprises the liquid in rotation chamber, has tangential inlet on this liquid in rotation chamber sidewall, and the nozzle bore that links to each other with liquid in rotation chamber one end.The atomizing of feed liquid is to rely on high-pressure pump that the feed liquid supercharging is entered the liquid in rotation chamber from tangential inlet, generally will reach the 20-200 atmospheric pressure, makes the static energy of feed liquid change rotation function into and sprays from nozzle, makes the feed liquid atomizing.The pressure type atomizing nozzle structure is than air flow type jet nozzle complexity.In order to reach the atomizing purpose, tangential slit and spout are all smaller, and the feed liquid that contains solid particle is very easily stopped up.In addition, in gas cleaning, for example from coal-fired flue-gas, remove SO
2Gas, general scale is all very big.If adopt pressure nozzle atomizing feed liquid just to need jumbo high-pressure pump could satisfy instructions for use.Be not difficult to find out that the high-pressure pump that solves so big flow is the comparison difficulty.In addition, in flue gas, contain CaCO in the feed liquid of desulfurization
3Or the solid particle of CaO, if narrow very easily generation of passage stopped up and fouling, make purification process be difficult to carry out, even stop purifying.
The purpose of this utility model is, for overcoming the weak point of prior art, a kind of follow-on self-excitation atomizing pressure nozzle is provided, can under lower hydraulic pressure, (fluid pressure that is equivalent to the air pattern nozzle) obtain reasonable atomizing effect, to satisfy the demand of gas cleaning (as flue gas desulfurization) to the feed liquid atomizing.
The self-excitation atomizing pressure nozzle of the utility model design is characterized in that, comprises a tubular shell, is provided with the hollow helical member in the said housing; This housing front end is the feed liquid inlet that has connecting thread, and the rear portion is a cone, and cone end is the spout that has the angle of flare.
The utility model adopts internal thread to be connected with the feed liquid pipe, so that dismounting.Nozzle body is processed with tubing, can reduce material consumption and processing capacity.Helical member can be similar helical spring structure, its external diameter equals the internal diameter of housing, coil cross section can be the narrow rectangle of horizontal wide height, and the number of turns of helical member can be controlled in the 1-3 circle, and the number of turns is many, atomizing effect is good, but resistance is big, and on the contrary, the number of turns is few, the little atomizing effect of resistance is poor, and the number of turns can be decided according to instructions for use.The processing of helicoid is smooth as far as possible, to reduce drag losses., two strands of liquid streams converge at nozzle hole cone, and the cone angle of cone can be controlled in about 120 °, and the big fluid resistance of cone angle is big, the too small spray angle that can reduce feed liquid of cone angle.Cone is a vulnerable part, for ease of changing, removably connects with the housing employing.The cylindrical section width of spout is not too big, can be controlled in about 1mm, and the angle of flare of spout is controlled at about 120 °.
The self-excitation atomizing principles of the utility model feed liquid is: in general, the atomizing effect of air-blast atomization nozzle is better than the pressure type atomizer, and this is because there is very big speed difference in gas-liquid two-phase, thereby produce friction feed liquid is atomized.The utility model forms speed difference with reference to the atomizing principles of aerodynamic atomization nozzle in feed liquid self, to strengthen atomizing effect.Because the existence of hollow helical member makes the sub-thread liquid stream that enters nozzle be divided into two bursts of tributaries in the nozzle body.One is by the straight-through nozzle end in helical member center, and another strand rotates into nozzle end along helicoid, and two strands of liquid streams converge at nozzle-end cone place.The straight-through liquid flowing resistance that flows into from the helical member center is little, flow velocity is fast, and increases owing to rotation flows into resistance from the liquid stream that helicoid flows through, and flow velocity is slowed down, and this just forms the speed difference of two strands of liquid streams.When two bursts of liquid stream frictions mutually when cone portion is converged, thereby strengthened atomizing effect owing to speed difference.Although the speed difference of the speed difference of two liquid stream air-flow and liquid stream in the atomizer, because the proportion of liquid is much larger than the proportion of gas, this just makes Impact energy of two strands of liquid streams increase.Therefore, although self-excitation atomizing ground effect does not reach the effect of aerodynamic atomization, will be good than the atomizing effect of conventional pressure nozzle many.
The utility model compared with prior art has following advantage:
The first, under lower feed pressure, obtain being better than the atomizing effect of conventional drive nozzle, this is due to the self-excitation atomizing effect that produced of two bursts of flow stream velocity differences.
The second, adopt the major path structure, can reduce choking phenomenon to greatest extent and take place, keep the circulation area of nozzle interior to be not less than area of injection orifice, this is particularly important to the feed liquid that contains solid particle.
Three, compare with conventional pressure type atomizer, simple in structure, be easy to processing, reduce cost.
Brief Description Of Drawings:
Fig. 1 is a general structure schematic diagram of the present utility model.
Fig. 2 is a hollow helical member example structure schematic diagram of the present utility model.
A kind of self-excitation atomizing pressure nozzle embodiment of the utility model design is described with reference to the accompanying drawings as follows:
The structure of present embodiment is made up of connector 1, helical member 2, nozzle body 3 and nozzle hole cone 4 as shown in Figure 1, and wherein, connector 1 adopts external screw thread to be connected with the feed liquid pipe, so that dismounting.The processing of nozzle body 3 usefulness tubing can reduce material consumption and processing capacity, housing 3 internal diameter 20mm.Helical member 2 be similar helical spring structure as shown in Figure 2, its external diameter equals the internal diameter of housing 3, coil cross section is the narrow rectangle of horizontal wide height, the number of turns of helical member 2 is two circles, pitch 10mm, helical member median pore diameter 6mm.Circulation area is 1.4: 1 with conveyor screw center circulation area ratio between helicoid.The processing of helicoid is smooth as far as possible, to reduce drag losses.Two strands of liquid streams converge at nozzle hole cone 4, and the cone angle of cone is about 120 °, and cone 4 is a vulnerable part, for ease of changing, removably connect with housing 3 employings.Spout 5 diameter 6mm, 90 ° of cone angles, the cylindrical section width of spout 5 is not too big, can be controlled in about 1mm, and the angle of flare of spout is controlled at about 120 °.
Feed pressure 0.2Mpa condition blanking flow quantity 1.95m before nozzle
3/ h, about 40 ° of jet angle, atomizing tapered is real awl.Observe by naked eyes and photography, atomizing effect is good, has not observed the feed liquid particle in injection stream, all reaches atomizing.
Claims (5)
1, a kind of self-excitation atomizing pressure nozzle is characterized in that, comprises a tubular shell, is provided with the hollow helical member in the said housing; This housing front end is the feed liquid inlet that has connecting thread, and the rear portion is a cone, and cone end is the spout that has the angle of flare.
2, self-excitation atomizing pressure nozzle according to claim 1 is characterized in that, said helical member is and the conveyor screw of the coaxial hollow coil spring shape of tubular shell that this coil cross section is a rectangle.
3, self-excitation atomizing pressure nozzle according to claim 1 is characterized in that, the circulation area between two helicoids is 1-2 with the ratio of the circulation area at conveyor screw center.
4, self-excitation atomizing pressure nozzle according to claim 1 is characterized in that, the said spirochetal spiral number of turns is between 1-3.
5, self-excitation atomizing pressure nozzle according to claim 1 is characterized in that, said conveyor screw and housing adopt the welding connection structure of split processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267989 CN2463060Y (en) | 2000-12-29 | 2000-12-29 | Self-exciting stomizing pressure nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267989 CN2463060Y (en) | 2000-12-29 | 2000-12-29 | Self-exciting stomizing pressure nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2463060Y true CN2463060Y (en) | 2001-12-05 |
Family
ID=33621701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00267989 Expired - Fee Related CN2463060Y (en) | 2000-12-29 | 2000-12-29 | Self-exciting stomizing pressure nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2463060Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289339A (en) * | 2014-10-29 | 2015-01-21 | 无锡纳润特科技有限公司 | Desulfurization and atomization nozzle structure |
| CN110236719A (en) * | 2019-07-17 | 2019-09-17 | 小白熊（上海）母婴用品有限公司 | A kind of water toothpick |
| CN112170856A (en) * | 2020-09-17 | 2021-01-05 | 北京机科国创轻量化科学研究院有限公司 | Novel equipment and method for efficiently preparing metal powder |
-
2000
- 2000-12-29 CN CN 00267989 patent/CN2463060Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289339A (en) * | 2014-10-29 | 2015-01-21 | 无锡纳润特科技有限公司 | Desulfurization and atomization nozzle structure |
| CN110236719A (en) * | 2019-07-17 | 2019-09-17 | 小白熊（上海）母婴用品有限公司 | A kind of water toothpick |
| CN112170856A (en) * | 2020-09-17 | 2021-01-05 | 北京机科国创轻量化科学研究院有限公司 | Novel equipment and method for efficiently preparing metal powder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |