A kind of cavitation jet spray headTechnical field
The present invention relates to physical cleaning equipment technical fields, more particularly to a kind of cavitation jet spray head.
Background technique
In modern industrial production, the dirts such as grease stain, rust, deposit often are generated on equipment part surface.ThisThe presence of a little dirts seriously affects production activity, and efficient cleaning means are essential in the industrial production.Pieces of equipmentCleaning mainly has chemical cleaning and physical cleaning, since chemical cleaning has damage part, and meanwhile it is larger to the pollution of environment, becauseThis research and development has high efficiency, low energy consumption, and the physics cleaning equipment with good cleaning effect is the development side of cleaning techniqueTo.Currently, High-pressure Water Jet Technology derust, degrease and dirty pollutant in terms of have good performance, since it is adoptedRaw material is water, therefore is also a kind of cleaning way of environmental protection.But the effect of high pressure water cleaning is with pressure riseMeanwhile equipment life, cleaning cost etc. can also improve.In order to improve the power density and cleaning effect of water cleaning equipment, it is based onCavitation phenomenon and the cavitation jet cleaning technique proposed comes into being, it is hollow via cavitation jet under identical pressure conditionThe generation of bubble and the high temperature and pressure come that crumbles and fall, cavitation jet cleaning technique have better cleaning effect.
Existing cavitation jet cleaning technique relies primarily on the structure of spray head to obtain cavitation effect, current existing spray headStructure, cavitation phenomenon occur mainly in nozzle interior.
Summary of the invention
The structure of spray head is relied primarily on for existing cavitation jet cleaning technique set forth above to obtain cavitation effect,The technical issues of current existing nozzle structure, cavitation phenomenon occurs mainly in nozzle interior, the present invention provides a kind of skiesChange fluid jet nozzle.The structure of this spray head, which is designed, extends to nozzle exterior for cavitation phenomenon or region, can effectively improve cavitation jetCleaning effect.
In view of the above-mentioned problems, a kind of cavitation jet spray head provided by the invention is solved the problems, such as by following technical essential:A kind of cavitation jet spray head, including head body, the cavitation chamber being set in head body, as the second of cavitation chamber arrival endNozzle, as the second outlet of cavitation chamber outlet end, further include the confining pressure chamber being set in head body, as the confining pressure chamberFirst nozzle of arrival end is located at spray head as the first outlet of confining pressure chamber outlet, the first outlet and second outletOn the same side of ontology, and first outlet is annular in shape, and the second outlet is located at the inside of first outlet, second outlet outputFluid to the outside of second outlet outlet port spread.
In the present solution, the confining pressure chamber, cavitation chamber are the runner in head body, and two runners are mutually indepedent, havingBody introduces fluid into confining pressure chamber to cavitation chamber, by the first nozzle in use, passing through the second nozzle respectively, is introduced into cavitation chamberFluid cavitation phenomenon is occurring in cavitation chamber flow process, and exported by second outlet, specific cavitation cavity configuration is setMeter may be designed as: along the flow direction of cavitation chamber, cavitation chamber includes reducer, if front end is one section of elongated trunnion, trunnionThe fluid flow area of end cavitation chamber each point first becomes smaller to become larger again, thus for water flow fluid flowed out by trunnion after, water flowPressure sharply decline, therefore, water flow at the jet inlet with form pressure drop in cavitation chamber body, by cavitation theory it is found that thisShi Shuiliu forms turbulent flow in cavitation inside cavity, and strong cavitation effect occurs；The fluid in confining pressure chamber is introduced into confining pressure chamberIn be uniformly distributed, and converge by the confining pressure jet stream of first outlet output annular and with the fluid of second outlet output, specific theThe fluid that two outlet setting forms are set as second outlet output is spread outward, is preferably arranged to uniformly expand aroundIt dissipates.
In the cavitating nozzle of the prior art, cavitation phenomenon often only occurs in nozzle interior, jet stream enter atmosphere withAfterwards, since atmospheric pressure increases, cavitation effect would generally weaken until disappearing at this time.In the present solution, by second outlet outputAfter the annular confining pressure jet stream package of power stream exported by first outlet, since the contact between power stream and atmosphere is completeWhole cricoid annular jet is blocked, at this point, the pressure distribution of power stream can maintain second outlet outlet portOutside, contact cavitation zone can directly with cleaned part, reach expand cavitation generation area, effective use cavitation vacuole burstThe high pressure conditions generated when going out promote the purpose of cavitation jet cleaning effect.
Further technical solution are as follows:
In the prior art, by being usually uniformly diverging around after the main fluid outflow second outlet of second outlet output, the annular confining pressure jet stream to enable first outlet to export preferably obstructs power stream and atmosphere, is arranged are as follows: described secondOutlet is the round hole on head body surface, and the axis collinear of both second outlet and first outlet.
Facilitate connecting fluid pipe as a kind of, to facilitate the technical solution for introducing fluid to the first nozzle and the second nozzle,Setting are as follows: second nozzle and the first nozzle are setting internal thread pipe fitting.
As noted previously, as confining pressure chamber is the annular cavity on the outside of cavitation chamber, therefore for carrying sky in head bodyThe part for changing chamber is actually partially in cantilever beam, and when the work of this spray head, it itself is needed by the fluid that the first nozzle introduces largerPressure, as it is a kind of facilitate manufacture, can optimize this spray head stress, this programme work when facilitate control this programme technical sideCase, the cavitation chamber are the linear type runner in head body, and the confining pressure chamber is the annular around cavitation chamber circumferential directionChamber, and confining pressure chamber and cavitation chamber are coaxial；
First nozzle is multiple, and multiple first nozzles are uniformly distributed relative to the axis annular of cavitation chamber.It is preferably provided withQuantity for first nozzle is three or three or more, so that can be full of confining pressure by the fluid that the first nozzle entersChamber obtains complete annular jet by first outlet.
Facilitate the convenient head body set-up mode of manufacture and use as a kind of: the head body is cylindrical or morePrism-shaped, when being in polygon prism shape, head body axial symmetry, the second nozzle and second outlet are located at the different ends of nozzle body,Cavitation chamber and confining pressure chamber extend each along the axis direction of head body, and the first nozzle is arranged on the side of head body, andThe axis direction of first nozzle is respectively positioned on the radial direction of head body.
As the specific setting form of spray head, the head body includes supporting element, position of splitter and cavitation part；
The through-hole for penetrating through its both ends is provided on supporting element；
The cavitation part is in direct rod shape, and the cavitation chamber is the through-hole being arranged on cavitation part, one end of cavitation part and branchOne end of through-hole is fixedly connected in support member, and the other end of through-hole is the second nozzle on supporting element；
The position of splitter is cyclic structure, and wherein one end of position of splitter is fixedly connected with supporting element, position of splitter and cavitationPart is connected to the same end of supporting element；
The cavitation part has in a ring relative between duct inner wall on the side wall and position of splitter of supporting element extensionGap, the gap in a ring is the confining pressure chamber；
First nozzle is arranged on the side wall of position of splitter, and first nozzle is communicated with confining pressure chamber.In the present solution, willHead body is set as multiple structural members: supporting element, position of splitter and cavitation part, in this way, each structural member carries out after processing is completedThis spray head can be obtained in assembly, that is, provides a kind of technical solution for facilitating processing and manufacturing.
Due on the flow direction of cavitation chamber, in the end of confining pressure chamber, between first outlet and second outlet distance compared withHour, first outlet output fluid can be optimized to the confining pressure effect of second outlet output fluid, as described above, this programme cavitationPart is preferably set relative to the cantilever part that the part that supporting element stretches out is on cavitation part for the mechanical property for guaranteeing cavitation partIt is set to area of section of the cavitation part close to supporting element one end and is greater than the area of section far from supporting element one end, to match the above structureDesign, setting are as follows: the position of splitter includes shunting body and confining pressure part, and the shunting body is cylindrical in shape with confining pressure part, and shunting bodyOne end be fixedly connected with one end of confining pressure part；
The supporting element is in the ladder shaft-like with a ladder, and the duct on shunting body is stepped hole, shunting body and branchThe small end of support member is fixedly connected；
First nozzle is arranged on shunting body；
The confining pressure chamber is by the annular hole section between annular hole section, confining pressure part and the cavitation part between shunting body and cavitation partComposition.Using this programme, position of splitter is split-type design, and the size of matching cavitation part easy to process respectively is carried out to respective inner holeDesign, to improve the machining accuracy in duct in position of splitter.It is slight between cavitation chamber and confining pressure chamber as those skilled in the artFluid communication is allowed, but considers the performance of this spray head entirety, must be between supporting element and shunting body, shunting body and confining pressureSealing element is set between part, to avoid dielectric leakage when the work of this spray head.When using being welded to connect, it is utilized as the weldering of girth jointSeam be sealed, using be threadedly coupled when, can by between supporting element and shunting body first seal, shunting body withSecond seal is set, and in being threadedly coupled fastener cycle, in corresponding first seal and second seal between confining pressure partThe scheme for obtaining the seal pressure constantly increased is realized.
Each section as a kind of group of cost spray head is detachable, to facilitate the reality for carrying out modular repair and replacement to this componentExisting scheme, setting are as follows: described be fixedly connected is to be threadedly coupled.
The invention has the following advantages:
In the cavitating nozzle of the prior art, cavitation phenomenon often only occurs in nozzle interior, jet stream enter atmosphere withAfterwards, since atmospheric pressure increases, cavitation effect would generally weaken until disappearing at this time.In the present solution, by second outlet outputAfter the annular confining pressure jet stream package of power stream exported by first outlet, since the contact between power stream and atmosphere is completeWhole cricoid annular jet is blocked, at this point, the pressure distribution of power stream can maintain second outlet outlet portOutside, contact cavitation zone can directly with cleaned part, reach expand cavitation generation area, effective use cavitation vacuole burstThe high pressure conditions generated when going out promote the purpose of cavitation jet cleaning effect.
Detailed description of the invention
Fig. 1 is the structure sectional view that a kind of cavitation jet of the present invention sprays first specific embodiment；
Fig. 2 is the side view that a kind of cavitation jet of the present invention sprays first specific embodiment.
Figure acceptance of the bid note is respectively as follows: 1, supporting element, 2, shunting body, 3, confining pressure part, 4, cavitation part, the 5, first nozzle, 6, confining pressureChamber, 7, first outlet, 8, second outlet, 9, cavitation chamber, the 10, second nozzle, 11, first seal, 12, second seal.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, but the present invention is not limited only to following implementationExample:
Embodiment 1:
As depicted in figs. 1 and 2, a kind of cavitation jet spray head, including head body, the cavitation chamber being set in head bodyIt 9, further include being set to spray head as the second nozzle 10 of 9 arrival end of cavitation chamber, as the second outlet 8 of 9 outlet end of cavitation chamberIntrinsic confining pressure chamber 6 goes out as the first nozzle 5 of 6 arrival end of confining pressure chamber, as the first of the confining pressure chamber 6 outletMouthfuls 7, the first outlet 7 is located on the same side of head body with second outlet 8, and first outlet 7 is annular in shape, and described theTwo outlets 8 are located at the inside of first outlet 7, and the fluid that second outlet 8 exports is spread to the outside of 8 outlet port of second outlet.
In the present solution, the confining pressure chamber 6, cavitation chamber 9 are the runner in head body, and two runners are mutually indepedent,When specifically used, fluid is introduced into confining pressure chamber 6 to cavitation chamber 9, by the first nozzle 5 by the second nozzle 10 respectively, is drawnCavitation phenomenon is occurring in 9 flow process of cavitation chamber for the fluid for entering cavitation chamber 9, and is exported by second outlet 8, specific emptyChanging the design of 9 structure of chamber may be designed as: along the flow direction of cavitation chamber 9, cavitation chamber 9 includes reducer, as reducer front end isOne section of elongated trunnion, the fluid flow area of 9 each point of trunnion end cavitation chamber first becomes smaller to become larger again, therefore is the fluid of water flowAfter being flowed out by trunnion, the pressure of water flow sharply declines, and therefore, water flow forms pressure at jet inlet and in 9 body of cavitation chamberDrop, by cavitation theory it is found that water flow forms turbulent flow inside 9 body of cavitation chamber at this time, occurs strong cavitation effect；It is introduced into and enclosesPressure chamber 6 in fluid be uniformly distributed in confining pressure chamber 6, and by first outlet 7 export annular confining pressure jet stream and with second outlet 8The fluid of output converges, and the fluid that specific 8 setting form of second outlet is set as the output of second outlet 8 is spread i.e. outwardCan, it is preferably arranged to uniformly spread around.
In the cavitating nozzle of the prior art, cavitation phenomenon often only occurs in nozzle interior, jet stream enter atmosphere withAfterwards, since atmospheric pressure increases, cavitation effect would generally weaken until disappearing at this time.In the present solution, exported by second outlet 8Power stream exported by first outlet 7 annular confining pressure jet stream package after, due to the contact between power stream and atmosphere by forComplete cricoid annular jet is blocked, at this point, the pressure distribution of power stream can maintain second outlet 8 to export positionThe outside set contact cavitation zone can directly with cleaned part, reaches and expands cavitation generation area, effective use cavitation vacuoleThe high pressure conditions generated when crumbling and fall promote the purpose of cavitation jet cleaning effect.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as depicted in figs. 1 and 2, in the prior art, byIt is usually uniformly to dissipate around after the main fluid outflow second outlet 8 of two outlets, 8 output, to export first outlet 7Annular confining pressure jet stream can preferably obstruct power stream and atmosphere, be arranged are as follows: the second outlet 8 be head body surface onRound hole, and the axis collinear of both second outlet 8 and first outlet 7.
Facilitate connecting fluid pipe as a kind of, to facilitate the technical side for introducing fluid to the first nozzle 5 and the second nozzle 10Case, setting are as follows: second nozzle 10 and the first nozzle 5 are setting internal thread pipe fitting.
As noted previously, as confining pressure chamber 6 is the annular cavity positioned at 9 outside of cavitation chamber, therefore for carrying in head bodyThe part of cavitation chamber 9 is actually partially in cantilever beam, and when this spray head works, fluid needs for being introduced by the first nozzle 5 itselfBiggish pressure, as it is a kind of facilitate manufacture, can optimize this spray head stress, this programme work when facilitate control this programme technologyScheme, the cavitation chamber 9 are the linear type runner in head body, and the confining pressure chamber 6 is around 9 circumferential direction of cavitation chamberAnnular chamber, and confining pressure chamber 6 and cavitation chamber 9 are coaxial；
First nozzle 5 is multiple, and multiple first nozzles 5 are uniformly distributed relative to the axis annular of cavitation chamber 9.
Facilitate the convenient head body set-up mode of manufacture and use as a kind of: the head body is cylindrical or morePrism-shaped, when being in polygon prism shape, head body axial symmetry, the second nozzle 10 and second outlet 8 are located at the difference of nozzle bodyEnd, cavitation chamber 9 and confining pressure chamber 6 extend each along the axis direction of head body, and the side of head body is arranged in the first nozzle 5On, and the axis direction of the first nozzle 5 is respectively positioned on the radial direction of head body.
As the specific setting form of spray head, the head body includes supporting element 1, position of splitter and cavitation part 4；
The through-hole for penetrating through its both ends is provided on supporting element 1；
The cavitation part 4 is in direct rod shape, and the cavitation chamber 9 is the through-hole being arranged on cavitation part 4, one end of cavitation part 4It is fixedly connected with one end of through-hole on supporting element 1, the other end of through-hole is the second nozzle 10 on supporting element 1；
The position of splitter is cyclic structure, and wherein one end of position of splitter is fixedly connected with supporting element 1, position of splitter and cavitationPart 4 is connected to the same end of supporting element 1；
The cavitation part 4 is in ring relative to having between duct inner wall on the side wall and position of splitter of 1 extension of supporting elementThe gap of shape, the gap in a ring are the confining pressure chamber 6；
First nozzle 5 is arranged on the side wall of position of splitter, and first nozzle 5 is communicated with confining pressure chamber 6.This programmeIn, multiple structural members: supporting element 1, position of splitter and cavitation part 4 are set by head body, in this way, each structural member completes the processAfter carry out assembly this spray head can be obtained, that is, provide a kind of technical solution for facilitating processing and manufacturing.
Due on the flow direction of cavitation chamber 9, in the end of confining pressure chamber 6, the spacing of first outlet 7 and second outlet 8From it is smaller when, can optimize first outlet 7 export fluid to second outlet 8 export fluid confining pressure effect, as described above, this programmeCavitation part 4 is relative to the cantilever part that the part that supporting element 1 stretches out is on cavitation part 4, for the mechanical property for guaranteeing cavitation part 4Can, cavitation part 4 is preferably arranged to close to the area of section of 1 one end of supporting element and is greater than the area of section far from 1 one end of supporting element, isMatch the above structure design, setting are as follows: the position of splitter includes shunting body 2 and confining pressure part 3, and the shunting body 2 and confining pressure part 3 are equalIt is cylindrical in shape, and one end of shunting body 2 is fixedly connected with one end of confining pressure part 3；
The supporting element 1 is in the ladder shaft-like with a ladder, and the duct on shunting body 2 is stepped hole, shunting body 2 withThe small end of supporting element 1 is fixedly connected；
First nozzle 5 is arranged on shunting body 2；
The confining pressure chamber 6 is by the ring between annular hole section, confining pressure part 3 and the cavitation part 4 between shunting body 2 and cavitation part 4Shape hole section composition.Using this programme, position of splitter is split-type design, carries out matching cavitation part easy to process respectively to respective inner hole4 size design, to improve the machining accuracy in duct in position of splitter.As those skilled in the art, cavitation chamber 9 and confining pressure chamber 6Between slight fluid communication be allowed, but consider this spray head entirety performance, must between supporting element 1 and shunting body 2,Sealing element is set between shunting body 2 and confining pressure part 3, to avoid dielectric leakage when the work of this spray head.When using being welded to connect, benefitIt is sealed with for the weld seam of girth joint, when using being threadedly coupled, between supporting element 1 and shunting body 2 the can be passed throughSecond seal 12 is set between one sealing element 11, shunting body 2 and confining pressure part 3, and in being threadedly coupled fastener cycle, corresponding theThe scheme that the seal pressure constantly increased is obtained on one sealing element 11 and second seal 12 is realized.
Each section as a kind of group of cost spray head is detachable, to facilitate the reality for carrying out modular repair and replacement to this componentExisting scheme, setting are as follows: described be fixedly connected is to be threadedly coupled.
The above content is combine specific preferred embodiment to the further description of the invention made, and it cannot be said that originallyThe specific embodiment of invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs,The other embodiments obtained in the case where not departing from technical solution of the present invention, should be included within the scope of the present invention.