CN114602675B - Noise reduction nozzle with flow dividing structure - Google Patents
Noise reduction nozzle with flow dividing structure Download PDFInfo
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- CN114602675B CN114602675B CN202210425974.9A CN202210425974A CN114602675B CN 114602675 B CN114602675 B CN 114602675B CN 202210425974 A CN202210425974 A CN 202210425974A CN 114602675 B CN114602675 B CN 114602675B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
- B05B7/0861—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with one single jet constituted by a liquid or a mixture containing a liquid and several gas jets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention discloses a noise reduction nozzle with a flow dividing structure. The rear end of the base is provided with a bamboo joint pipe, the front end of the base and the rear end of the spray pipe are coaxially and fixedly connected, the front end of the spray pipe and the rear end of the outer nozzle head are connected through an inner nozzle head sleeved inside the spray pipe, the inner cavities of the base, the spray pipe and the outer nozzle head are communicated, a nozzle core is arranged in the communicated inner cavity, the rear end of the nozzle core is connected with a fluid source through a transfusion hose, an inner nozzle groove is formed in the inner nozzle head, and a nozzle core blind hole is formed in the outer peripheral surface of the nozzle core. The invention divides the main air flow into secondary air flows by improving the structure of the nozzle head, can strengthen the air flow mixing function of the main air flow, strengthens the mixing in the shearing layer, plays a role in reducing noise, has smaller manufacturing process change and has the characteristics of simplicity and economy.
Description
Technical Field
The invention belongs to a noise reduction nozzle structure in the technical field of nozzle noise reduction, and particularly relates to a nozzle for spraying liquid drops by using gas as a carrier.
Background
The common spray making method is pneumatic atomization, collecting airflow and liquid in two coaxial pipelines, conveying liquid by a central pipeline, conveying gas by an outer pipeline, enhancing the flow of airflow around the liquid by adopting high-pressure gas, enabling the liquid to contact with each other to generate vibration and friction, enabling the liquid to be broken into fine liquid drops, and then atomizing and spraying the liquid drops at a nozzle. It is common in industrial production to achieve a directed transport of cooling or lubricating fluid in this way.
The main function of the nozzle is to atomize the liquid, so that the existing nozzle usually only considers technical indexes such as atomization effect, spray distance and the like in the design process, but the nozzle also generates particularly serious noise pollution. Although various noise reduction nozzles have been proposed, such as noise reduction devices and injection systems for minimal lubrication (CN 111590386B), the invention reduces the distribution range of turbulence intensity by opening an outlet in the nozzle body and filling noise reduction gas into the outlet to reduce the noise. A low-noise pneumatic nozzle (CN 1876242A) is provided, the front end of the nozzle is additionally provided with a boss which is circumferentially provided with a plurality of micro-channels and internally provided with a cavity, so that trace high-pressure gas is injected into a main jet flow of the nozzle, and the aim of reducing impact jet flow noise is fulfilled.
Disclosure of Invention
In order to solve the problems in the background art, the invention designs the noise reduction nozzle which divides the main airflow to form the secondary jet flow without adding extra air, reduces the noise caused by instability of a flowing large-scale vortex structure, and achieves the purpose of reducing the noise by changing the stability of the vortex structure and the jet flow speed.
The technical scheme of the invention is as follows:
the structure of the invention comprises a base, a spray pipe, an outer nozzle head, an inner nozzle head, a nozzle core, a transfusion hose and a bamboo joint pipe; the rear end of the base is provided with a bamboo joint pipe, the front end of the base is coaxially and fixedly connected with the rear end of the spray pipe, the front end of the spray pipe is connected with the rear end of the outer nozzle head through an inner nozzle head sleeved inside the base, the inner cavities of the base, the spray pipe and the outer nozzle head are communicated, a nozzle core is arranged in the communicated inner cavity, the rear end of the nozzle core is connected with a fluid source through a transfusion hose, the inner nozzle head is provided with an inner nozzle groove, and the peripheral surface of the nozzle core is provided with a nozzle core blind hole.
The nozzle core is internally provided with an axial injection channel which is communicated with the infusion hose.
The rear end of the base is provided with a plurality of bamboo joint pipes, and the bamboo joint pipes and the base and the adjacent bamboo joint pipes are all hinged in a universal mode through spherical hinges.
The middle part of the inner cavity of the base is provided with a nozzle core fixing hole, and the nozzle core fixing hole and the nozzle core are connected and matched with each other through threads;
the base front end be equipped with the internal thread as base spray tube connecting thread, the spray tube rear end be equipped with the external screw thread as spray tube base connecting thread, base spray tube connecting thread and spray tube base connecting thread threaded connection make spray tube and base between coaxial coupling.
The rear end of the spray pipe is provided with internal threads as connecting threads of an inner nozzle head of the spray pipe, the rear end of the outer nozzle head is provided with internal threads as internal threads of the outer nozzle head, the outer peripheral surface of the main body of the inner nozzle head is provided with external threads as external threads of the inner nozzle, the rear half section of the external threads of the inner nozzle head is in threaded connection with the connecting threads of the inner nozzle head of the spray pipe, and the front half section of the external threads of the inner nozzle head is in threaded connection with the internal threads of the outer nozzle head.
A plurality of inner nozzle grooves are formed in the outer thread of the inner nozzle formed by the inner nozzle head along the circumferential direction, and each inner nozzle groove is formed in the axial direction and extends to the front end face of the inner nozzle head.
The front end of the outer nozzle head is processed into a tapered circular table with a reduced caliber, and the front end of the inner nozzle head is processed into an inner nozzle circular table which is consistent with the tapered circular table at the front end of the outer nozzle head.
The rear end of the nozzle core is provided with a nozzle core connector which is connected with a transfusion hose; an outer flange is processed at the middle part of the nozzle core to be used as a nozzle core boss, and the outer peripheral surface of the nozzle core between the nozzle core boss and the nozzle core connector is processed into a nozzle core base connecting thread; the nozzle core part at the front end of the nozzle core boss is used as a nozzle core main body, a plurality of blind hole groups which are arranged at intervals along the circumferential direction are arranged on the surface of the nozzle core main body, and each blind hole group is formed by arranging a plurality of nozzle core blind holes along the axial direction in a square mode.
The blind holes of the nozzle core are respectively aligned with the inner nozzle grooves formed by the inner nozzle head in a one-to-one correspondence manner at radial positions along the circumferential direction.
The air flows through the base, the spray pipe and the inner cavity of the outer nozzle head, and is divided by the gas at the inner nozzle head, wherein most of the gas passes through the inner nozzle head, a small part of the gas passes through the inner nozzle head groove on the outer wall of the inner nozzle head, and the two parts of separated gas are merged at the nozzle opening at the front end of the inner nozzle head.
The invention can be used for a device for conveying lubricating liquid in the field of micro-lubrication.
The invention adopts a method of shunting the main air flow, so that the secondary jet flow is formed at the nozzle under the condition of not adding extra air, and the problem that a high-pressure air source needs to be additionally added in the prior art is solved.
The invention sprays the primary jet of the nozzle into the micro-jet at a certain angle to form secondary jet, thereby strengthening the mixing of the primary jet, accelerating the development of a shear layer, breaking a large-scale vortex structure, forming a small-scale vortex and reducing noise.
The invention has the advantages that:
the structure can make the pressure of the gas injected by the nozzle slightly larger, and the main gas shunt can reduce the axial velocity of the main jet. The secondary efflux that the branch came is at nozzle opening department injection main efflux, can strengthen main fluidic air current mixing effect, open a plurality of evenly distributed blind holes on nozzle core first half section surface simultaneously, influence near wall flow and pressure distribution in the nozzle core, reinforce the intraformational mixing of shearing, thereby influence the formation and the development of nozzle opening department large-scale vortex structure, make large-scale vortex structural stability descend, the more fast breakage becomes the miniscale vortex, efflux core length shortens, play the effect of noise reduction.
The invention does not need to add extra equipment, but changes the structure of the nozzle, has the characteristics of small change of the manufacturing process, simplicity and economy, can be suitable for various nozzles or nozzles which are not convenient to add other equipment, and has positive effect on reducing the noise of the nozzle which adopts gas as a carrier to spray liquid drops.
Drawings
FIG. 1 is a schematic structural and cross-sectional view of a noise reducing nozzle;
FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
fig. 4 is a schematic perspective view of the base 11;
fig. 5 is a cross-sectional structural view of the base 11;
FIG. 6 is a schematic structural view of the nozzle 12;
fig. 7 is a schematic structural view of the outer nozzle head 13;
fig. 8 is a schematic structural view of the inner nozzle head 14;
fig. 9 is an end view of the inner nozzle head 14;
FIG. 10 isbase:Sub>A cross-sectional view A-A of FIG. 9;
fig. 11 is a schematic perspective view of the nozzle core 15;
fig. 12 is a schematic sectional structure of the nozzle core 15.
FIG. 13 is a schematic nozzle tip size diagram of an embodiment of the present invention;
FIG. 14 is a schematic illustration of nozzle core dimensions for an embodiment of the present invention;
FIG. 15 is a schematic illustration of a noise reduction test position in accordance with an embodiment of the present invention.
In the figure, a base 11, a base connector 111, a base nozzle core fixing hole 112, a base flank 113, a base nozzle connecting thread 114, a nozzle 12, a nozzle base connecting thread 121, a nozzle inner nozzle head connecting thread 122, an outer nozzle head 13, an outer nozzle head internal thread 131, an outer nozzle head front end face 132, an inner nozzle head 14, an inner nozzle groove 141, an inner nozzle circular truncated cone 142, an inner nozzle external thread 143, a nozzle core 15, a nozzle core connector 151, a nozzle core base connecting thread 152, a nozzle core boss 153, a nozzle core main body 154, a nozzle core blind hole 155, a nozzle core front end face 156, an infusion hose 16 and a bamboo joint pipe 17.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
Referring to fig. 1-3, a schematic structural view and a cross-sectional view of a noise reducing nozzle are shown. The structure of the device comprises a base 11, a spray pipe 12, an outer nozzle head 13, an inner nozzle head 14, a nozzle core 15, a transfusion hose 16 and a bamboo joint pipe 17; the rear end of the base 11 is provided with a bamboo joint pipe 17, the front end of the base 11 is coaxially and fixedly connected with the rear end of the spray pipe 12,
the front end of the spray pipe 12 and the rear end of the outer nozzle head 13 are connected through the inner nozzle head 14 sleeved inside, the inner nozzle head 14 is located inside the front end of the spray pipe 12 and the rear end of the outer nozzle head 13, the base 11, the spray pipe 12 and the outer nozzle head 13 are internally provided with cavities which penetrate through the inner cavities and are coaxial along the axial direction, the inner cavities of the base 11, the spray pipe 12 and the outer nozzle head 13 are communicated, and a nozzle core 15 is installed in the communicated inner cavities, the rear end of the nozzle core 15 is connected with a fluid source through a fluid delivery hose 16, the fluid delivery hose 16 penetrates through a bamboo joint pipe 17 and is arranged, the front end of the nozzle core 15 extends into the front end of the inner nozzle head 14, the inner nozzle head 14 is provided with an inner nozzle groove 141, and the peripheral surface of the nozzle core 15 is provided with a nozzle core blind hole 155.
The nozzle core 15 is provided with an axial injection channel inside, and the injection channel is communicated with the infusion hose 16.
The rear end of the base 11 is provided with a plurality of bamboo joint pipes 17, and the bamboo joint pipes 17 and the base 11 and the adjacent bamboo joint pipes 17 are all hinged in a universal mode through spherical hinges. In a specific implementation, a hemispherical base connector 111 is arranged at the tail of the base 11, and the base connector 111 and the bamboo joint pipe 16 form a spherical connection to realize air injection.
The liquid is delivered through the infusion tube 16, the compressed air is delivered through the passage inside the bamboo joint tube 17 and outside the infusion tube 16, and finally the two are merged at the front end of the nozzle core front end face 156 of the nozzle core 15 to form the gas mist.
As shown in fig. 4-5, the structure of the base 11 is schematically illustrated. The middle part of the inner cavity of the base 11 is provided with a nozzle core fixing hole 112, the nozzle core fixing hole 112 is fixedly connected with the inside of the cavity of the base 11 through a plurality of base side wing plates 113 which are arranged at intervals along the circumferential direction on the outer peripheral surface, the three base side wing plates 113 connect the nozzle core fixing hole 112 with the base 11, and the flaky base side wing plates 113 increase the flow area of gas and reduce the generation of noise. The nozzle core fixing hole 112 and the nozzle core 15 are matched and sleeved through threaded connection; the nozzle core fixing hole 112 is internally threaded for mating threaded connection with the nozzle core base connection threads 152 of the nozzle core 15 to fix the axial position of the nozzle core 15.
The front end of base 11 is provided with internal threads as base nozzle connection threads 114, the rear end of nozzle 12 is provided with external threads as nozzle base connection threads 121, and base nozzle connection threads 114 and nozzle base connection threads 121 are threadedly connected to enable coaxial connection between nozzle 12 and base 11.
As shown in fig. 6, the rear end of the nozzle 12 is provided with an internal thread as a nozzle inner nozzle head connection thread 122, the rear end of the outer nozzle head 13 is provided with an internal thread as an outer nozzle head internal thread 131, the outer circumferential surfaces of the bodies of the inner nozzle heads 14 are provided with external threads as inner nozzle external threads 143, the rear half of the inner nozzle external threads 143 of the inner nozzle head 14 is in threaded connection with the nozzle inner nozzle head connection thread 122 of the nozzle 12, and the front half of the inner nozzle external threads 143 of the inner nozzle head 14 is in threaded connection with the outer nozzle head internal thread 131 of the outer nozzle head 13, so that the front end of the nozzle 12 and the rear end of the outer nozzle head 13 are coaxially connected through the inner nozzle head 14.
The inner nozzle external thread 143 of the inner nozzle head 14 is provided with a plurality of inner nozzle grooves 141 along the circumferential direction, and each inner nozzle groove 141 is arranged along the axial direction, extends to the front end face of the inner nozzle head 14, and also extends to the junction between the front end of the nozzle core front end face 156 of the nozzle core 15 and the outer nozzle head front end face 132.
The outer nozzle tip front face 132 and the inner nozzle tip 14 front face meet at the nozzle core front face 156.
The front end of the outer nozzle head 13 is processed into a tapered circular truncated cone with a reduced caliber, and the front end of the inner nozzle head 14 is processed into an inner nozzle circular truncated cone 142 which is matched with the tapered circular truncated cone at the front end of the outer nozzle head 13.
As shown in fig. 7, the outer nozzle head 13 has a revolved body structure with internal threads, and forms a branched gas flow path in cooperation with the plurality of outer surface grooves 141 of the inner nozzle 14.
As shown in fig. 8-10, the inner nozzle head 14 is composed of a threaded cylinder 143 and a circular truncated cone 142. A plurality of inner nozzle grooves 141 are formed on the outer surface to cooperate with the outer nozzles 13 for the flow of the divided gas. The inner nozzle groove 141 has a width b and a depth a. Among them, b is preferably in the range of 0.5mm to 1.5mm, and a is preferably in the range of 0.5mm to 1mm.
The rear end of the nozzle core 15 is provided with a nozzle core connector 151, and the nozzle core connector 151 is connected with the infusion hose 16; the infusion hose 16 is connected to the main body of the apparatus at one end and is fitted over the nozzle core connection head 151 at the other end.
The nozzle core 15 is a metal pipe with a hollow inner part, an outer flange is processed at the middle part of the metal pipe to be used as a nozzle core boss 153, the outer peripheral surface of the nozzle core 15 between the nozzle core boss 153 and the nozzle core connector 151 is processed into a nozzle core base connecting thread 152, and the nozzle core base connecting thread 152 is used for being in threaded fit connection with the nozzle core fixing hole 112;
the part of the nozzle core 15 at the front end of the nozzle core boss 153 serves as a nozzle core main body 154, a plurality of blind hole groups are arranged on the surface of the nozzle core main body 154 at intervals along the circumferential direction, and each blind hole group is formed by a plurality of nozzle core blind holes 155 arranged along the axial direction in a square mode.
The liquid is ejected from the front port of the nozzle core 15 through the nozzle core 15, the air flows through the inner cavities of the base 11, the spray pipe 12 and the outer nozzle head 13, and is divided by the gas at the inner nozzle head 14, wherein most of the gas passes through the inner nozzle head 14, a small part of the gas passes through the inner nozzle head groove 141 on the outer wall of the inner nozzle head 14, and the two parts of the separated gas are merged at the front end nozzle port of the inner nozzle head 14. The nozzle core is provided with a plurality of blind holes, and the blind holes are uniformly distributed in the front half section of the nozzle core, so that the near wall surface flow and pressure distribution in the nozzle core are influenced, the mixing in a shearing layer is strengthened, and the noise of the nozzle is reduced.
The nozzle head is divided into an inner nozzle head and an outer nozzle head, a plurality of grooves are formed in the outer wall of the inner nozzle head to form a flow channel for flowing of the split gas, the split gas flows out at a certain angle along the grooves at the nozzle opening to form secondary jet flow to be merged with the main gas flow again. The secondary jet flows are mixed into the main air flow of the nozzle, so that the flowing mixing of the main air flow is enhanced, the stability of a large-scale vortex structure at the nozzle is reduced, the large-scale vortex structure is broken into small-scale vortices more quickly, and the purpose of reducing noise is achieved.
As shown in fig. 11 to 12, the reverse tapered connector 151 at the rear of the nozzle core 15 is connected to the infusion hose 16 for liquid injection. The nozzle core external threads 152 connect with the base nozzle core securing holes 112 to secure the nozzle core. The boss 153 is used to limit the position of the nozzle core so that the distance from the nozzle core front end face 156 to the nozzle head front end face 132 is t, with t preferably ranging from 2mm to 3mm.
The nozzle core body 154 is provided with a plurality of uniformly distributed blind holes 155, which influence the near wall flow and pressure distribution in the nozzle core and strengthen the mixing in the shear layer.
The depth of the blind hole is d, and the diameter is c. Among them, d is preferably in the range of 0.5 to 1.5mm, c is preferably in the range of 1mm to 2mm, and the number of blind holes is preferably 4 to 6.
Nozzle core examples illustrate:
the range of the pressure intensity of the gas used by the invention is 0.3 MPa-0.7 MPa.
As shown in FIG. 11, the blind hole of the nozzle core in the example has a diameter of 1mm and a depth of 0.5mm, and 6 blind holes are formed in each of the four directions.
As shown in fig. 12, the width of the inner nozzle tip groove in the example was 0.7mm and the depth was 0.5mm.
Nozzle core example noise reduction:
the original nozzle structure without the splitter box and the nozzle structure of the invention (as shown in fig. 13-14) are subjected to noise test respectively. As shown in FIG. 15, the measurement radius R was 0.5m, and the measurement angles θ were 15 °,30 °,45 °,60 °,75 °, and 90 °, respectively, to obtain the following data (see Table 1).
TABLE 1
By comparison, it can be seen that: in the selected 6 measurement angles, the noise of the shunt nozzle is reduced compared with that of the original nozzle, and the maximum value can reach 3.48dB, so that the method has a better noise reduction effect.
Claims (9)
1. A nozzle of making an uproar falls with reposition of redundant personnel structure which characterized in that: the structure of the device comprises a base (11), a spray pipe (12), an outer nozzle head (13), an inner nozzle head (14), a nozzle core (15), a transfusion hose (16) and a bamboo joint pipe (17); the rear end of a base (11) is provided with a bamboo joint pipe (17), the front end of the base (11) is coaxially and fixedly connected with the rear end of a spray pipe (12), the front end of the spray pipe (12) is connected with the rear end of an outer nozzle head (13) through an inner nozzle head (14) sleeved in the inner part, inner cavities of the base (11), the spray pipe (12) and the outer nozzle head (13) are communicated, a nozzle core (15) is arranged in the communicated inner cavity, the rear end of the nozzle core (15) is connected with a fluid source through a fluid delivery hose (16), the inner nozzle head (14) is provided with an inner nozzle groove (141), and the peripheral surface of the nozzle core (15) is provided with a nozzle core blind hole (155);
a plurality of inner nozzle grooves (141) are formed in the outer thread (143) of the inner nozzle formed in the inner nozzle head (14) along the circumferential direction, and each inner nozzle groove (141) is formed in the axial direction and extends to the front end face of the inner nozzle head (14);
the rear end of the nozzle core (15) is provided with a nozzle core connector (151), and the nozzle core connector (151) is connected with a transfusion hose (16); an outer flange is processed at the middle part of the nozzle core (15) to be used as a nozzle core boss (153), and the outer peripheral surface of the nozzle core (15) between the nozzle core boss (153) and the nozzle core connecting head (151) is processed into a nozzle core base connecting thread (152); the part of the nozzle core (15) at the front end of the nozzle core boss (153) is used as a nozzle core main body (154), a plurality of blind hole groups which are arranged at intervals along the circumferential direction are arranged on the surface of the nozzle core main body (154), and each blind hole group is formed by a plurality of nozzle core blind holes (155) which are arranged along the axial direction in a square mode.
2. A noise reducing nozzle having a flow splitting arrangement as defined in claim 1, wherein:
the nozzle core (15) is internally provided with an axial injection channel which is communicated with the transfusion hose (16).
3. A noise reducing nozzle having a flow splitting arrangement as defined in claim 1, wherein:
the rear end of the base (11) is provided with a plurality of bamboo joint pipes (17), and the bamboo joint pipes (17) and the base (11) and the adjacent bamboo joint pipes (17) are all hinged in a universal mode through spherical hinges.
4. A noise reducing nozzle having a flow splitting arrangement as defined in claim 1, wherein:
the middle part of the inner cavity of the base (11) is provided with a nozzle core fixing hole (112), and the nozzle core fixing hole (112) and the nozzle core (15) are in matched sleeve through threaded connection.
5. A noise reducing nozzle having a flow splitting arrangement as defined in claim 1, wherein:
base (11) front end be equipped with the internal thread as base spray tube connecting thread (114), spray tube (12) rear end be equipped with the external thread as spray tube base connecting thread (121), base spray tube connecting thread (114) and spray tube base connecting thread (121) threaded connection make spray tube (12) and base (11) between coaxial coupling.
6. A noise reducing nozzle having a flow splitting arrangement as defined in claim 1, wherein:
the rear end of the spray pipe (12) is provided with an internal thread as a spray pipe inner nozzle head connecting thread (122), the rear end of the outer nozzle head (13) is provided with an internal thread as an outer nozzle head internal thread (131), the outer circumferential surface of the inner nozzle head (14) body is provided with external threads as inner nozzle external threads (143), the rear half section of the inner nozzle external threads (143) of the inner nozzle head (14) is in threaded connection with the spray pipe inner nozzle head connecting thread (122) of the spray pipe (12), and the front half section of the inner nozzle external threads (143) of the inner nozzle head (14) is in threaded connection with the outer nozzle head internal thread (131) of the outer nozzle head (13).
7. A noise reducing nozzle having a flow splitting arrangement as defined in claim 1, wherein:
the front end of the outer nozzle head (13) is processed into a tapered circular truncated cone with a reduced caliber, and the front end of the inner nozzle head (14) is processed into an inner nozzle circular truncated cone (142) which is consistent with the tapered circular truncated cone at the front end of the outer nozzle head (13).
8. A noise reducing nozzle having a flow splitting arrangement as defined in claim 1, wherein:
the blind hole groups of the nozzle core (15) are respectively aligned with the inner nozzle grooves (141) formed by the inner nozzle head (14) in a one-to-one correspondence mode along the circumferential direction at radial positions.
9. A noise reducing nozzle having a flow splitting arrangement as defined in claim 1, wherein:
air flows through the inner cavities of the base (11), the spray pipe (12) and the outer nozzle head (13) and is divided by gas at the inner nozzle head (14), wherein most of the gas passes through the inner nozzle head (14), a small part of the gas passes through an inner nozzle groove (141) on the outer wall of the inner nozzle head (14), and the two parts of separated gas are converged at a front end nozzle opening of the inner nozzle head (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210425974.9A CN114602675B (en) | 2022-04-21 | 2022-04-21 | Noise reduction nozzle with flow dividing structure |
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| CN202210425974.9A CN114602675B (en) | 2022-04-21 | 2022-04-21 | Noise reduction nozzle with flow dividing structure |
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| CN114602675B true CN114602675B (en) | 2023-03-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2611046Y (en) * | 2003-04-02 | 2004-04-14 | 黄条祥 | Sprinkler head |
| CN108253799A (en) * | 2018-02-22 | 2018-07-06 | 中国恩菲工程技术有限公司 | side-blown spray gun |
| CN208853055U (en) * | 2018-07-05 | 2019-05-14 | 迈德乐喷雾系统广州有限公司 | A kind of double fluid atomization nozzle |
| CN111998343A (en) * | 2020-09-11 | 2020-11-27 | 深圳易恒环保科技有限公司 | Single-nozzle multi-beam flame nozzle |
| CN113680545A (en) * | 2021-08-30 | 2021-11-23 | 浙江工业大学 | Noise reduction nozzle adjusted by adopting rotating structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE7806883L (en) * | 1978-06-14 | 1979-12-15 | Ingemanssons Ingenjorsbyra Ab | BLOWER DEVICE WITH LAYER SIZE LEVEL |
-
2022
- 2022-04-21 CN CN202210425974.9A patent/CN114602675B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2611046Y (en) * | 2003-04-02 | 2004-04-14 | 黄条祥 | Sprinkler head |
| CN108253799A (en) * | 2018-02-22 | 2018-07-06 | 中国恩菲工程技术有限公司 | side-blown spray gun |
| CN208853055U (en) * | 2018-07-05 | 2019-05-14 | 迈德乐喷雾系统广州有限公司 | A kind of double fluid atomization nozzle |
| CN111998343A (en) * | 2020-09-11 | 2020-11-27 | 深圳易恒环保科技有限公司 | Single-nozzle multi-beam flame nozzle |
| CN113680545A (en) * | 2021-08-30 | 2021-11-23 | 浙江工业大学 | Noise reduction nozzle adjusted by adopting rotating structure |
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| CN114602675A (en) | 2022-06-10 |
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