CN108043602B - Self-adaptive turbulence nozzle - Google Patents
Self-adaptive turbulence nozzle Download PDFInfo
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- CN108043602B CN108043602B CN201810093350.5A CN201810093350A CN108043602B CN 108043602 B CN108043602 B CN 108043602B CN 201810093350 A CN201810093350 A CN 201810093350A CN 108043602 B CN108043602 B CN 108043602B
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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
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
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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
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
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Abstract
The invention provides a self-adaptive turbulence nozzle which comprises a nozzle body, a turbulence piece and a plurality of elastic units, wherein the nozzle body is provided with an air inlet end part and an air outlet end part, the nozzle body is sequentially provided with a laminar flow chamber and a turbulence chamber along the direction from the air inlet end part to the air outlet end part, the cross section area of the turbulence chamber is gradually reduced along the direction from the air inlet end part to the air outlet end part, the turbulence piece is movably arranged in the turbulence chamber along the direction parallel to the central axis of the nozzle, and the turbulence piece is connected with the inner wall of the nozzle body through each elastic unit. By adopting the self-adaptive turbulence nozzle of the technical scheme, the nozzle can meet the requirement of high-precision adjustment, can automatically adjust the fluid flow rate, automatically adapt to the effect of turbulence generated by the nozzle under different flow rates, can automatically improve the flow rate of output air flow to the maximum extent, has low cost, and is more stable and convenient for fluid adjustment.
Description
Technical Field
The invention relates to the technical field of fluid nozzles, in particular to a self-adaptive turbulence nozzle.
Background
At present, two types of common fluid nozzles are adopted, one type is a structure with a variable cross section, specifically, a fluid input end is provided with a wider cross section, and fluid flows out of the narrower cross section, so that fluid acceleration is realized, and the type is simple in structure and high in market share. However, this simple variable cross-section spray pattern cannot meet this high-level demand in the face of high-end demands, such as typical turbulent flow control. The other is to manually adjust the opening valve of the spray nozzle of the spray head, when turbulence is required to be sprayed at a higher flow rate, the opening of the opening valve is only required to be adjusted to be small, so that fluid flows through a small channel to obtain a high flow rate; otherwise, when the fluid needs to be dispersed and the flow speed is low, the opening of the opening valve is increased, so that the channel through which the fluid passes is increased, and the fluid speed is reduced. Obviously, the latter spray heads inevitably need to be manually involved in the use process, but in reality, the application of the spray heads is greatly restricted due to the adverse effects of most field environments on human beings.
In summary, the fluid nozzle in the prior art has insufficient adjustment precision, cannot meet the requirement of high-level adjustment, and in addition, the nozzle is adjusted through the valve, but the adjustment needs to be manually participated, the adjustment and control are inconvenient, and the production cost of the nozzle is increased.
Disclosure of Invention
The invention aims to provide a self-adaptive turbulence nozzle which can meet the requirement of high-precision adjustment, can automatically adjust the flow rate of fluid, has low cost and is more stable and convenient for fluid adjustment.
Based on the above, the invention provides a self-adaptive turbulence nozzle, which comprises a nozzle body, a turbulence piece and a plurality of elastic units, wherein the nozzle body is provided with an air inlet end part and an air outlet end part, the nozzle body is sequentially provided with a laminar flow chamber and a turbulence chamber along the direction from the air inlet end part to the air outlet end part, the cross section area of the turbulence chamber is gradually reduced along the direction from the air inlet end part to the air outlet end part, the turbulence piece is movably arranged in the turbulence chamber along the direction parallel to the central axis of the nozzle, and the turbulence piece is connected with the inner wall of the nozzle body through each elastic unit.
As a preferred scheme, the elastic unit comprises a piston cylinder, a piston rod and an extension spring, one end of the piston cylinder is connected with the inner wall of the nozzle body, two ends of the extension spring are respectively connected with the piston cylinder and the piston rod, and one end of the piston rod is connected with the turbulence piece.
Preferably, the piston rod is sleeved in the piston cylinder.
As a preferred scheme, the inner wall of the nozzle body is provided with a first connecting part for connecting with the piston cylinder, and the outer wall of the turbulence piece is provided with a second connecting part for connecting with the piston rod.
Preferably, the first connecting portion is a first protrusion, the second connecting portion is a second protrusion, the first protrusion is connected with the piston cylinder through a hinge, and the second protrusion is connected with the piston rod through a hinge.
Preferably, a pressure balance through hole is arranged at the bottom of the piston cylinder.
Preferably, the spoiler is a fusiform baffle, the outer wall of the fusiform baffle is streamline, and the fusiform baffle is of a central symmetry structure.
Preferably, the nozzle body is of a central symmetrical structure, and the central axis of the fusiform stop block coincides with the central axis of the nozzle body.
Preferably, the number of the elastic units is at least three, and each elastic unit is uniformly arranged around the central axis of the nozzle body in the circumferential direction.
Preferably, the inner wall of the air inlet end part is provided with threads, and the outer wall of the air inlet end part is provided with a key groove.
The embodiment of the invention has the following beneficial effects:
1. under the working state of the nozzle, laminar gas in the laminar flow chamber is introduced into the turbulent flow chamber, the turbulent flow member carries out turbulent flow on the laminar gas so as to destroy the laminar flow state of the gas, and meanwhile, the gas drives the turbulent flow member to move along the direction parallel to the central axis of the nozzle; the vortex piece is connected with the nozzle body through a plurality of elastic units, so that the vortex piece can vibrate back and forth along the direction parallel to the central axis of the nozzle, the automatic adjustment of the airflow velocity is realized through the automatic reset of the vortex piece, the cost is low, and the adjustment is convenient and stable.
2. The elastic unit comprises a piston cylinder, a piston rod and an extension spring, one end of the piston cylinder is connected with the inner wall of the nozzle body, two ends of the extension spring are respectively connected with the piston cylinder and the piston rod, and one end of the piston rod is connected with the turbulence piece. Based on the structure, the turbulence piece can stably reciprocate along the direction parallel to the central axis of the nozzle body, the stretching spring is stretched when the air flow passes through the turbulence chamber, the tension of the stretching spring can enable the turbulence piece to reset, and meanwhile, the whole elastic unit is of a detachable structure, so that the disassembly and maintenance are convenient.
3. The piston rod is sleeved in the piston cylinder, so that the piston rod can be stably positioned in the piston cylinder, the phenomenon that the piston rod slides out can not occur, and the stable operation of the elastic unit is ensured.
4. The first connecting portion is first arch, and the second connecting portion is the second arch, and first arch passes through hinged joint with the piston tube, and the second is protruding to pass through hinged joint with the piston rod, and first protruding and the bellied structure of second makes the connection between whole elastic element and the vortex piece more convenient, and the junction of hinge makes first arch and piston tube can take place to rotate, also makes the junction of second arch and piston rod can take place to rotate, and then makes the vortex piece can take place certain rotation, and then guarantees the stable operation of vortex piece.
5. The bottom of the piston cylinder is provided with a pressure balance through hole, so that air can enter the piston cylinder from the pressure balance through hole, the air in the piston cylinder is supplemented, the piston rod is ensured to be capable of being reset smoothly, and the elastic unit works smoothly.
6. The vortex piece is the fusiform dog, and the outer wall of fusiform dog is streamline and fusiform dog is central symmetry structure, and fusiform dog vortex effect is better, and the gas is smooth and easy to move after striking fusiform dog, and the outer wall of fusiform dog is streamline and can make the gas reduce pressure loss when striking for the energy loss is few after the gas passes through the vortex cavity.
7. The inner wall of tip that admits air is equipped with the screw thread, is convenient for the nozzle body from this and the connection of outside air pump pipeline, and the outer wall of tip of admitting air is provided with the keyway, and the keyway of setting can make the tip rotation of admitting air more convenient, increases the frictional force of tip outer wall of admitting air.
Drawings
FIG. 1 is a schematic diagram of an adaptive turbulence nozzle in an embodiment of the invention.
Fig. 2 is a partially enlarged view at a in fig. 1.
Fig. 3 is a schematic view illustrating a connection structure between the elastic unit and the spoiler in an embodiment of the invention.
In the figure: the device comprises a nozzle body, a turbulence piece, a 3-elastic unit, a 4-air inlet end part, a 5-air outlet end part, a 6-laminar flow chamber, a 7-turbulence chamber, a 8-first bulge, a 9-second bulge, a 10-pressure balance through hole, 11-threads and 12-key grooves, wherein the nozzle body is provided with a plurality of grooves; 3 a-piston cylinder, 3 b-piston rod, 3 c-extension spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the invention.
As shown in fig. 1 to 3: the embodiment provides a self-adaptive turbulence nozzle, which comprises a nozzle body 1, a turbulence piece 2 and a plurality of elastic units 3, wherein the nozzle body 1 is provided with an air inlet end 4 and an air outlet end 5, and it is noted that in the working state of the nozzle body 1 in the embodiment, one end of the air inlet end 4 is connected with an air pump, so that air flow is enabled to flow into the nozzle body 1, the nozzle body 1 is sequentially provided with a laminar flow chamber 6 and a turbulence chamber 7 along the direction from the air inlet end 4 to the air outlet end 5, the cross-sectional area of the turbulence chamber 7 is gradually reduced along the direction from the air inlet end 4 to the air outlet end 5, the turbulence piece 2 is movably arranged in the turbulence chamber 7 along the direction parallel to the central axis of the nozzle, and the turbulence piece 2 is connected with the inner wall of the nozzle body 1 through each elastic unit 3, so that when air flows through the turbulence chamber 7, the air is blocked by the turbulence piece 2, and meanwhile, the air flow turbulence piece 2 moves along the direction parallel to the central axis of the nozzle, and at the moment, the flow speed of the air flow is enabled to be gradually reduced by the flow passage formed between the turbulence piece 2 and the turbulence chamber 7; the movable amplitude of the turbulence piece 2 can be automatically adjusted according to the air flow speed flowing into the turbulence chamber 7, when the air flow speed is high, the movable amplitude of the turbulence piece 2 is larger, so that the cross-sectional area of the overflow channel is smaller, the air flow speed is further accelerated, in addition, the turbulence piece 2 is connected with the nozzle body 1 through a plurality of elastic units 3, and therefore the turbulence piece 2 can be automatically reset in the process of adjusting the air flow speed, and the automatic adjustment of the turbulence piece 2 is realized. It should be noted that, the laminar flow gas generated by the general air pump breaks the laminar flow state of the gas under the turbulence action of the turbulence piece 2 in the turbulence chamber 7, and the gas drives the turbulence piece 2 to move along the direction parallel to the central axis of the nozzle, so that the through-flow channel formed between the turbulence piece 2 and the turbulence chamber 7 is gradually reduced, and the flow speed of the gas flow is increased when the gas flow passes through the through-flow channel, and the Reynolds number formula pushed by the Navier-Stokes formula can know that the Reynolds number is in direct proportion to the flow speed of the fluid, when the flow speed is increased to a certain critical value, the laminar flow gas is changed into turbulent flow gas, and the gas flowing out of the nozzle body 1 is turbulent flow gas under the combined action of the turbulence piece 2 and the acceleration of the gas flow. Turbulence is a highly complex three-dimensional unsteady, irregular flow with rotation, and a plurality of small eddies exist in a turbulent gas flow field, and the momentum, heat and mass transfer caused by the small eddies generated randomly is higher by several orders of magnitude than that of laminar flow, so that the turbulent gas can be better applied to the fields of essence diffusion, liquid atomization scattering and the like.
According to the technical scheme, under the working state of the nozzle, laminar gas in the laminar flow chamber 6 is introduced into the turbulent flow chamber 7, the turbulent flow member 2 is used for carrying out turbulent flow on the laminar gas so as to destroy the laminar flow state of the gas, and meanwhile, the gas drives the turbulent flow member 2 to move along the direction parallel to the central axis of the nozzle, and the cross section area of the turbulent flow chamber 7 is gradually reduced along the direction from the air inlet end part 4 to the air outlet end part 5, so that a flow passage through which air supply flow formed between the turbulent flow member 2 and the turbulent flow chamber 7 passes is gradually reduced, the flow speed is further increased when the air flow passes through the flow passage, and under the combined action of turbulent flow of the turbulent flow member 2 and acceleration of the air flow, the gas flowing out of the nozzle body 1 is turbulent flow gas; the spoiler 2 is connected with the nozzle body 1 through a plurality of elastic units 3, so that the spoiler 2 can vibrate back and forth along the direction parallel to the central axis of the nozzle, the automatic adjustment of the airflow velocity is realized through the automatic reset of the spoiler 2, the cost is low, and the adjustment is convenient and stable.
In the present embodiment, the elastic unit 3 includes a piston cylinder 3a, a piston rod 3b, and an extension spring 3c, one end of the piston cylinder 3a is connected with the inner wall of the nozzle body 1, both ends of the extension spring 3c are connected with the piston cylinder 3a and the piston rod 3b, respectively, and one end of the piston rod 3b is connected with the spoiler 2. Based on the above structure, the spoiler 2 can stably reciprocate along the direction parallel to the central axis of the nozzle body 1, the air flow stretches the stretching spring 3c when passing through the spoiler chamber 7, the stretching force of the stretching spring 3c can reset the spoiler 2, and meanwhile, the whole elastic unit 3 is of a detachable structure, so that the disassembly and maintenance are convenient. It should be noted that the elastic unit 3 is not limited to the structure in the present embodiment, and the elastic unit 3 may be replaced by a compression spring instead of the tension spring 3c by replacing the position of the elastic unit 3, and the spring may be another elastic structure, such as an elastic rod. The structure in this embodiment can make the spoiler 2 stably connected, which is a preferred solution.
In order to enable the piston rod 3b to be matched and movable with the piston cylinder 3a stably, the piston rod 3b is sleeved in the piston cylinder 3a, so that the piston rod 3b can be positioned in the piston cylinder 3a stably without the phenomenon that the piston rod 3b slides out, and the stable operation of the elastic unit 3 is ensured.
Furthermore, the inner wall of the nozzle body 1 is provided with a first connection for connecting the piston cylinder 3a, and the outer wall of the spoiler 2 is provided with a second connection for connecting the piston rod 3 b. Further, the first connecting portion is the first protruding 8, the second connecting portion is the second protruding 9, the first protruding 8 passes through hinged joint with piston cylinder 3a, the second protruding 9 passes through hinged joint with piston rod 3b, the structure of first protruding 8 and the protruding 9 of second makes the connection between whole elastic element 3 and the vortex piece 2 more convenient, and the connected mode of hinge makes the junction of first protruding 8 and piston cylinder 3a rotate, also makes the junction of second protruding 9 and piston rod 3b rotate, and then makes the vortex piece 2 can take place certain rotation, and then guarantees the stable operation of vortex piece 2.
The bottom of the piston cylinder 3a is provided with a pressure balance through hole 10, so that air can enter the piston cylinder 3a from the pressure balance through hole 10, and the air in the piston cylinder 3a is supplemented, so that the piston rod 3b can be restored smoothly, and the elastic unit 3 works smoothly.
The turbulence member 2 in this embodiment is a fusiform baffle, the outer wall of the fusiform baffle is streamline and the fusiform baffle is a central symmetry structure, the turbulence effect of the fusiform baffle is better, and the operation is smooth after the gas impacts the fusiform baffle, the outer wall of the fusiform baffle is streamline, so that the pressure loss is reduced when the gas impacts, the energy loss is less after the gas passes through the turbulence chamber 7, and the fusiform baffle with the central symmetry structure can operate more stably. Further, the nozzle body 1 is of a central symmetry structure, the central axis of the fusiform stop block is coincident with the central axis of the nozzle body 1, so that the fusiform stop block moves on the central axis of the nozzle body 1, the fusiform stop block moves more stably, the fusiform stop block is located on the central axis of the nozzle body 1, the fusiform stop block is stressed more uniformly under the impact of air flow, and the fusiform stop block moves more stably. It should be noted that, in the present embodiment, the curved surface of the inner wall of the nozzle body 1 is smooth, and any tangent line passing through the section line of the central axis of the nozzle body 1 is guided along the central axis direction, so that the energy loss caused when the air flow passes through the inner wall of the nozzle body 1 can be reduced.
Preferably, the number of the elastic units 3 is at least three, and each elastic unit 3 is uniformly arranged around the central axis of the nozzle body 1, so that the spoiler 2 can be stably arranged in the spoiler cavity 7, and the number of the elastic units 3 in the embodiment is three, so that the production cost can be reduced by adopting three elastic units 3 under the condition of meeting the structural strength, and it is pointed out that other numbers of the elastic units 3 can be selected according to actual requirements.
In addition, the inner wall of the air inlet end 4 is provided with threads 11, so that the connection of the nozzle body 1 and an external air pump pipeline is facilitated, the outer wall of the air inlet end 4 is provided with a key groove 12, the arranged key groove 12 can enable the air inlet end 4 to rotate more conveniently, and the friction force of the outer wall of the air inlet end 4 is increased.
By adopting the self-adaptive turbulence nozzle provided by the embodiment of the invention, in the working state of the nozzle, laminar gas in the laminar flow chamber 6 is introduced into the turbulence chamber 7, the turbulence piece 2 turbulence the laminar gas to destroy the laminar flow state of the gas, and meanwhile, the gas drives the turbulence piece 2 to move along the direction parallel to the central axis of the nozzle, and the cross section area of the turbulence chamber 7 gradually decreases along the direction from the air inlet end 4 to the air outlet end 5, so that the flow passage formed between the turbulence piece 2 and the turbulence chamber 7 for the air to pass through is gradually reduced, and the flow speed is increased when the air flows pass through the flow passage, and the gas flowing out of the nozzle body 1 is turbulent gas under the combined action of turbulence of the turbulence piece 2 and the acceleration of the air flow; the spoiler 2 is connected with the nozzle body 1 through a plurality of elastic units 3, so that the spoiler 2 can vibrate back and forth along the direction parallel to the central axis of the nozzle, the automatic adjustment of the airflow velocity is realized through the automatic reset of the spoiler 2, the cost is low, and the adjustment is convenient and stable.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (8)
1. An adaptive turbulent nozzle, characterized by: the jet nozzle comprises a jet nozzle body, a turbulence piece and a plurality of elastic units, wherein the jet nozzle body is provided with an air inlet end part and an air outlet end part, the jet nozzle body is sequentially provided with a laminar flow chamber and a turbulence chamber along the direction from the air inlet end part to the air outlet end part, the cross section area of the turbulence chamber is gradually reduced along the direction from the air inlet end part to the air outlet end part, the turbulence piece is movably arranged in the turbulence chamber along the direction parallel to the central axis of the jet nozzle, the turbulence piece is connected with the inner wall of the jet nozzle body through the elastic units, and the curved surface of the inner wall of the jet nozzle body is smooth;
the elastic unit comprises a piston cylinder, a piston rod and an extension spring, one end of the piston cylinder is connected with the inner wall of the nozzle body, two ends of the extension spring are respectively connected with the piston cylinder and the piston rod, one end of the piston rod is connected with the turbulence piece, and a pressure balance through hole is formed in the bottom of the piston cylinder;
when the flow speed of the air flow flowing in from one end of the air inlet end part is high, the air flow drives the turbulence piece to move along the direction parallel to the central axis of the nozzle, so that an air flow passing channel formed between the turbulence piece and the turbulence cavity for the air flow to pass through is gradually reduced, the flow speed of the air flow is further accelerated when the air flow passes through the air passing channel, and the air flowing out of the nozzle body is turbulent air under the combined action of turbulence of the turbulence piece and acceleration of the air flow.
2. The adaptive turbulence nozzle of claim 1, wherein: the piston rod is sleeved in the piston cylinder.
3. The adaptive turbulence nozzle of claim 1, wherein: the inner wall of the nozzle body is provided with a first connecting part for connecting with the piston cylinder, and the outer wall of the spoiler is provided with a second connecting part for connecting with the piston rod.
4. An adaptive turbulence nozzle as in claim 3, characterized in that: the first connecting part is a first bulge, the second connecting part is a second bulge, the first bulge is connected with the piston cylinder through a hinge, and the second bulge is connected with the piston rod through a hinge.
5. The adaptive turbulence nozzle of claim 1, wherein: the spoiler is a fusiform stop block, the outer wall of the fusiform stop block is streamline, and the fusiform stop block is of a central symmetry structure.
6. The adaptive turbulence nozzle of claim 5, wherein: the nozzle body is of a central symmetry structure, and the central axis of the fusiform stop block coincides with the central axis of the nozzle body.
7. The adaptive turbulence nozzle of any one of claims 1 to 6, wherein: the number of the elastic units is at least three, and the elastic units are uniformly arranged around the central axis of the nozzle body in the circumferential direction.
8. The adaptive turbulence nozzle of any one of claims 1 to 6, wherein: the inner wall of the air inlet end part is provided with threads, and the outer wall of the air inlet end part is provided with a key groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093350.5A CN108043602B (en) | 2018-01-30 | 2018-01-30 | Self-adaptive turbulence nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093350.5A CN108043602B (en) | 2018-01-30 | 2018-01-30 | Self-adaptive turbulence nozzle |
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| CN108043602A CN108043602A (en) | 2018-05-18 |
| CN108043602B true CN108043602B (en) | 2023-07-25 |
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| CN112604863A (en) * | 2020-12-28 | 2021-04-06 | 广州媛爱贸易有限公司 | Automatic pressing-in equipment for nozzle of electro-hydraulic servo valve |
| CN113995345A (en) * | 2021-08-24 | 2022-02-01 | 帝舍智能科技(武汉)有限公司 | Impeller mechanism for mopping and sweeping integrated cleaning head and cleaning equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3297225B2 (en) * | 1994-10-28 | 2002-07-02 | 三菱重工業株式会社 | Water jet nozzle |
| US7185830B2 (en) * | 2004-06-18 | 2007-03-06 | Malcolm David B | Uniform droplet spray nozzle for liquids |
| RU55842U1 (en) * | 2005-12-29 | 2006-08-27 | Пётр Петрович Решетников | DEVICE FOR HYDROCAVITATION EROSION DESTRUCTION OF POPULATIONS, SEDIMENTS AND ROCK IN AQUATIC ENVIRONMENT |
| CN101733211B (en) * | 2009-12-15 | 2011-11-16 | 江苏大学 | Internal-mixing type central body cavitating nozzle |
| CN102847621B (en) * | 2012-06-08 | 2015-08-05 | 江苏大学 | A kind of combined central body cavitating nozzle |
| CN203620821U (en) * | 2013-11-29 | 2014-06-04 | 广州大学 | Flow channel wall surface stress balance optimization-based high-pressure irrigation spray head |
| WO2015132684A1 (en) * | 2014-03-05 | 2015-09-11 | Koninklijke Philips N.V. | System for introducing pulsation into a fluid output for an oral care appliance |
| CN204677976U (en) * | 2015-04-15 | 2015-09-30 | 中冶南方工程技术有限公司 | Pipe flow speed device for limiting |
| CN206810523U (en) * | 2017-05-19 | 2017-12-29 | 深圳市行知行机器人技术有限公司 | Cavitating nozzle and cleaning equipment |
| CN107626463B (en) * | 2017-10-25 | 2023-08-04 | 西南交通大学 | Cavitation jet flow cleaning nozzle and system based on active control |
| CN207899611U (en) * | 2018-01-30 | 2018-09-25 | 广州大学 | A kind of adaptive turbulent flow nozzle |
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