CN113893963A - Annular fluidic device and fog gun machine - Google Patents
Annular fluidic device and fog gun machine Download PDFInfo
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- CN113893963A CN113893963A CN202111347262.1A CN202111347262A CN113893963A CN 113893963 A CN113893963 A CN 113893963A CN 202111347262 A CN202111347262 A CN 202111347262A CN 113893963 A CN113893963 A CN 113893963A
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- pipe
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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
- B05B7/0075—Nozzle arrangements in gas streams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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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
- B05B7/0892—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 the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
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- Chemical & Material Sciences (AREA)
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- Nozzles (AREA)
Abstract
The invention belongs to the technical field of atomization equipment, and particularly relates to an annular jet device and a fog gun machine. After the airflow passes through the annular jet device, the airflow can drive surrounding air to be brought into the airflow, and finally, the airflow of the wind power at the outlet of the fog gun is multiplied.
Description
Technical Field
The invention belongs to the technical field of atomization equipment, and particularly relates to an annular jet device and a fog gun machine.
Background
The fog gun machine is usually erected on a sanitation vehicle and used for dust suppression of urban roads and construction sites, the fog gun machine mainly comprises an air duct, a flow guide cone coaxially fixed in the air duct, one end of the flow guide cone is connected with an axial flow fan, and atomizing nozzles annularly distributed at the edge of an opening of the air duct, the working process of the fog gun machine mainly comprises the steps of conveying water to the atomizing nozzles through a specific pipeline by a high-pressure water pump, then sucking external air flow into the air duct by the axial flow fan through pressurization driven by rotation of fan blades, spraying out at a high speed from the other end of the air duct through the guiding action of the flow guide blades, simultaneously spraying high-speed jet gas to blow water mist generated by the atomizing nozzles to a distance, combining and agglomerating the water mist and dust particles in the air, and finally falling to the ground under the action of gravity, so that the purpose of dust removal is achieved.
At present, common fog guns for environmental sanitation are classified into three specifications of 60 meters, 80 meters and 120 meters according to spraying ranges. The axial flow fan is adopted for air supply, the axial flow fan is large in external dimension and long in axial dimension, the fog gun generally reaches 1.5-3 meters in axial length, the whole weight reaches 1.5-3 tons, the size is large, the weight is very large, the effective space of the whole vehicle is small, the space for arranging a water tank is small, and the single water adding operation time of the whole vehicle is short; and in addition, the existing fog gun has large mass, so that the running energy consumption of the whole vehicle is high, the spraying range is short and a series of unavoidable defects are caused. Most manufacturers have to increase the overall dimension of the fog gun in order to promote the spraying range, or improve the running speed, further increase the weight, reduce the available space of other accessories such as water tanks, bring bigger running noise simultaneously, in order to reduce the running noise, the existing scheme is to increase a layer of silencing layer on the wall surface of the outer cylinder of the axial flow fan, the diameter of the air cylinder is increased by the silencing layer, the whole weight is increased, and the running energy consumption of the whole vehicle operation is also increased.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the annular jet device and the fog gun machine thereof are provided to increase the final air flow jetted by the fog gun carrying the axial flow fan finally, so that the problem of small spraying range and air supply distance is solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the annular jet device comprises a jet pipe and an air pipe connected to the jet pipe, wherein the jet pipe comprises an inner pipe, an outer pipe sleeved outside the inner pipe, an airflow cavity arranged between the outer pipe and the inner pipe, a jet passage arranged in the inner pipe, a flow guide ring arranged at the tail end of the inner pipe and curling in the airflow cavity until the flow guide ring is connected with the inner pipe, and a slit-shaped gas jet opening is arranged between the flow guide ring and the outer pipe.
Furthermore, the inner pipe also comprises a reducing pipe connected to the other end of the jet pipe and an expanding pipe connected to the reducing pipe.
Furthermore, the diversion ring is connected below the reducing pipe in an O shape and is bent into the airflow cavity until the diversion ring is reversely contacted with the pipe wall of the reducing pipe.
Furthermore, the outer pipe comprises an outer spray pipe which is obliquely arranged with the inner pipe, and an arc-shaped pipe which is connected with one end of the outer spray pipe.
Furthermore, the arc-shaped pipe is in a semicircular groove shape, is bent towards the air flow cavity in an arc shape, and forms a slit air jet orifice with the inner pipe.
Further, the gas injection port is arranged between the diversion ring and the arc-shaped pipe.
Further, the annular jet fog gun also comprises a water spray ring connected to the head of the spray pipe.
Further, the water spray ring comprises a spray ring pipe which is annular along the periphery of the nozzle head of the spray pipe, and atomizing nozzles which are uniformly arranged on the spray ring pipe at intervals.
Furthermore, the atomizing nozzle of the high-pressure water spraying ring and the axis of the spraying ring pipe form an included angle of 30 degrees.
In another aspect, an annular jet device is provided, which includes the annular jet device as described above, and the annular jet device is arranged at the front end of the fog gun.
The invention has the beneficial effects that: according to the fog gun, the air flow cavity is arranged between the inner pipe and the outer pipe, the annular slit-shaped air injection opening is arranged between the pipe walls of the inner pipe and the outer pipe, and high-pressure air can jet along the inner pipe from the slit at a high speed according to the wall attachment effect of hydrodynamics; according to the Bernoulli principle, high-speed flowing gas can form a low-pressure area, and can suck in external air, so that the ambient air is driven to form wind power with doubled flow. Therefore, under the condition of the fan with the same power, the fog gun has longer air supply distance and spraying range, and the required operation energy consumption is reduced under the condition of achieving the same effect; meanwhile, the fog gun of the invention adopts the centrifugal fan to provide wind power, the noise of the centrifugal fan with the same power is usually lower than that of the axial flow fan, so the running noise can be greatly reduced, and compared with the axial flow fan, the centrifugal fan has the characteristic of high running efficiency, and the energy conservation can be further realized.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic diagram of the configuration of the fluidic device of the present invention;
FIG. 2 is a top view of the fluidic device shown in FIG. 1;
FIG. 3 is a cross-sectional view of the fluidic device shown in FIG. 2 taken along A-A;
FIG. 4 is an enlarged schematic view at B of FIG. 3;
in the figure: the gas pipe 1, the spray pipe 2, the inner pipe 21, the guide ring 211, the reducing pipe 212, the flaring pipe 213, the jet flow channel 22, the gas flow cavity 23, the outer pipe 24, the outer spray pipe 241, the arc pipe 242, the gas jet orifice 25, the water spray ring 3, the atomizing nozzle 31 and the spray ring pipe 32.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the present embodiment provides an annular jet device and a fog gun thereof, which comprises a nozzle 2, an air pipe 1 connected to the nozzle 2, and a water spray ring 3 connected to the outlet of the nozzle 2. The nozzle 2 comprises an inner tube 21 and an outer tube 24, the inner tube 21 is sleeved with the outer tube 24 in a tubular manner, an air flow cavity 23 is arranged between the inner tube 21 and the outer tube 24, the air flow cavity 23 is a high-pressure gas channel, an inner cavity of the annular inner tube 21 is a jet flow channel 22, and the air tube 1 is connected with the outer tube 24.
The inner tube 21 includes a funnel-shaped flared tube 213, a reducing tube 212 connected to one end of the flared tube 213, and a guide ring 211 connected to the reducing tube 212 and curled toward the inside of the gas flow chamber 23 to be connected to the reducing tube 212. The guide ring 211, the flared tube 213 and the reducing tube 212 are integrally formed, and the diameter of the reducing tube 212 is smaller than that of the flared tube 213. The flow guide circular ring 211 is in an O shape, the flow guide circular ring 211 is connected below the reducing pipe 212 and is bent towards the inside of the air flow cavity 23 until the flow guide circular ring is reversely contacted with the pipe wall of the reducing pipe 212, the arrangement of the flow guide circular ring 211 can reduce the turning angle of air flow, reduce the flow separation and internal flow loss of air, increase the jet speed of the air, and play a role in enabling the air to flow to the air jet port 25 along the flow guide circular ring 211 from the inner pipe 21 and jet out to the spray pipe 2.
The outer pipe 24 includes an outer nozzle 241 inclined with the inner pipe 21, and an arc pipe 242 bent from the outer nozzle 241 to the inner arc of the airflow cavity 23, the arc pipe 242. A gas jet 25 is arranged between the diversion ring 211 and the arc-shaped pipe 242. High-pressure gas is blown from the gas pipe 1, and the high-pressure gas is jetted from the gas jet port 25 to the jet flow channel 22.
The water spray ring 3 comprises an annular spray ring pipe 32 connected to the pipe head of the spray pipe 2 and atomizing nozzles 31 uniformly arranged on the spray ring pipe 32, the atomizing nozzles 31 atomize high-pressure water into micron-sized water mist particles, and the outlets of the atomizing nozzles 31 of the water spray ring 3 and the axis of the spray ring pipe 32 form 30-degree included angles, so that the water spray ring is beneficial to mist generation and cluster formation, good in spray effect and far in spray.
The fog gun of the invention provides high-pressure airflow by a centrifugal fan, an air outlet of the centrifugal fan is communicated with an air pipe 1, the high-pressure airflow is blown from the air pipe 1, the high-pressure airflow flows into a high-pressure air channel, the high-pressure airflow is extruded from a slit-shaped air jet orifice 25, the high-pressure airflow can flow at high speed along the pipe walls of a flow guide circular ring 211, a reducing pipe 212 and an expanding pipe 213 according to the wall attachment effect of hydrodynamics, the high-speed flowing air can form a low-pressure area at the airflow position according to Bernoulli principle, the low-pressure area can suck the high-pressure air provided by the centrifugal fan into a jet flow channel 22 of the fog gun, then the air is driven to move by the viscosity of the air, the outside air can be driven to move around the pipe orifice after the high-pressure air is sprayed out of the fog gun, the outside air is converged into the total airflow, and the total moving air quantity is far larger than the high-pressure air per se, the water mist sprayed from the atomizing nozzle 31 is finally emitted to a remote place by the high-pressure air flow.
The sectional area of the airflow cavity 23 between the inner tube 21 and the outer tube 24 of the fog gun is far larger than the size of the gas jet opening 25, the sectional area of the high-pressure gas channel is 5-10 times of the gas jet opening 25, the high-speed airflow carries ambient air to flow forwards, the total amount of the airflow passing through the cross section of the flared tube 213 is several times of the airflow of the gas jet opening 25 delta, the airflow direction is uniform axial airflow, and the velocity attenuation rate in the atmospheric environment is far smaller than the attenuation rate of the outlet spiral airflow of the existing axial flow fan. Therefore, under the condition of the same total outlet air flow, the fog gun of the scheme of the invention has a longer spraying distance.
As shown in fig. 3, the dimensions of the fog gun of the present invention have the following relationship:
D2/D1＝(1.05～1.1)，R3/R1＝2.3～2.8，R4/R1＝6.5～7，R2/R1＝0.4～0.6；
L1＝(0.4～0.6)D1。
wherein: l is1The distance from the bottom of the arced tube 242 to the nozzle ring 32, D1Is the diameter of the outer tube 24 at the gas injection port 25, D2Is the orifice diameter, R, of the inner tube 211Is the cross-sectional radius, R, of the arced tube 2422Is the cross-sectional radius, R, of the flow-guiding ring 2113Is the radius, R, of the reducing pipe 2124To maximize the radius of the flared tube 213, δ is the width of the gas injection orifice 25 and α is the angle of inclination at the jet ring.
The finished products prepared in the dimensional relationships of the examples were compared and processed into different sizes for performance testing, and the test results are shown in table 1.
Firstly, the air supply is givenThe rotating speed of the impeller is 3000rpm, the power of the fan is 35kw, and the flow of the air supply fan is 9846m3H, average outlet flow velocity of 51m/s, total gas flow of 82760m3/h。
TABLE 1 test results
Wherein, the annular jet device with serial number 15 sets the inclination angle alpha of the jet ring thereof as 15 degrees, the width delta of the gas jet opening 25 as 10mm, the maximum radius R of the flared tube as 450mm, and finally the annular jet device is obtained by the test of a prototype, the flow velocity of the gas jet opening 25 is 113m/s, the average wind velocity V of the outlet of the jet channel 22 is 53.6m/s, and the total flow Q of the outlet of the jet channel 22 is 85658m3And h, compared with the air flow quantity directly blown out by the air supply fan, the device amplifies the air by 8.4 times, and the effect is best.
The fog gun adopts the annular jet device, the gas flow of the gas after high-speed jet is multiplied, and compared with the fog gun which can reach the same spraying range, the axial size of the fog gun is only about 15 percent of that of the fog gun in the prior art, so that the occupied space is reduced, and the overall weight is reduced; meanwhile, the fog gun adopts a centrifugal fan to provide high-pressure gas, the high-pressure gas is sprayed out at a high speed through a narrow gap of the airflow spray opening 25, the high-speed airflow drives ambient air to form wind power with flow multiplication according to the wall attachment effect, and the water mist atomized by the atomizing nozzle 31 at the outlet of the water spray ring 3 is sent to a remote place; meanwhile, the fog gun can adopt a centrifugal fan, the noise of the centrifugal fan with the same power is lower than that of an axial flow fan, the operation noise can be greatly reduced, and compared with the axial flow fan, the centrifugal fan has the characteristic of high operation efficiency, and the energy conservation can be further realized.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
In light of the foregoing description of preferred embodiments in accordance with the invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The annular jet device is characterized by comprising a jet pipe and an air pipe connected to the jet pipe, wherein the jet pipe comprises an inner pipe, an outer pipe outside the inner pipe is sleeved with the inner pipe, an airflow cavity is arranged between the outer pipe and the inner pipe, a jet passage arranged in the inner pipe is arranged in the airflow cavity at the tail end of the inner pipe, and a flow guide circular ring which is curled until being connected with the inner pipe is arranged in the airflow cavity at the tail end of the inner pipe, and a slit-shaped gas jet opening is arranged between the flow guide circular ring and the outer pipe.
2. The annular fluidic device of claim 1 wherein the inner tube further comprises a reducer connected to the other end of the fluidic tube and a flared tube connected to the reducer.
3. The annular fluidic device of claim 2, wherein the deflector ring is O-shaped and attached to the lower portion of the reducer and is bent into the airflow cavity until it contacts the wall of the reducer in the opposite direction.
4. The annular fluidic device of claim 1, wherein the outer tube comprises an outer nozzle obliquely disposed to the inner tube, and an arcuate tube connected to an end of the outer nozzle.
5. The annular fluidic device of claim 4, wherein the arced tube is in the shape of a semicircular groove, and the arced tube is curved and bent towards the gas flow cavity to form a slit gas jet orifice with the inner tube.
6. The annular fluidic device of claim 4, wherein the gas injection port is disposed between the flow directing ring and the arced tube.
7. The annular jet apparatus of claim 1, wherein the annular jet fog gun further comprises a water spray ring attached to the nozzle tip.
8. The annular jet apparatus of claim 7, wherein the water spray ring comprises a spray ring tube annularly along a circumference of the nozzle tip, and atomizing nozzles evenly spaced on the spray ring tube.
9. An annular jet apparatus as claimed in claim 7, wherein the atomising nozzles of the high pressure water spray ring are arranged at an angle of 30 ° to the axis of the spray ring tube.
10. A fog gun machine, characterized in that it comprises an annular jet device according to any of claims 1-9, said annular jet device being arranged at the front end of the fog gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111347262.1A CN113893963A (en) | 2021-11-15 | 2021-11-15 | Annular fluidic device and fog gun machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111347262.1A CN113893963A (en) | 2021-11-15 | 2021-11-15 | Annular fluidic device and fog gun machine |
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| Publication Number | Publication Date |
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| CN113893963A true CN113893963A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111347262.1A Pending CN113893963A (en) | 2021-11-15 | 2021-11-15 | Annular fluidic device and fog gun machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409008A (en) * | 2022-03-04 | 2022-04-29 | 广东中浩水务投资有限公司 | Annular atomizing conduit and atomizing separator |
| CN114517705A (en) * | 2022-02-17 | 2022-05-20 | 中煤科工集团重庆研究院有限公司 | Single-head roadway gas-fog two-phase flow control dust settling system and method |
| CN114705435A (en) * | 2022-06-06 | 2022-07-05 | 中国飞机强度研究所 | Device and method for testing icing and water swallowing of aircraft engine in climate laboratory |
| CN114713399A (en) * | 2022-03-22 | 2022-07-08 | 南京理工大学泰州科技学院 | Uniform atomization spraying system based on all-terrain vehicle |
-
2021
- 2021-11-15 CN CN202111347262.1A patent/CN113893963A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517705A (en) * | 2022-02-17 | 2022-05-20 | 中煤科工集团重庆研究院有限公司 | Single-head roadway gas-fog two-phase flow control dust settling system and method |
| CN114409008A (en) * | 2022-03-04 | 2022-04-29 | 广东中浩水务投资有限公司 | Annular atomizing conduit and atomizing separator |
| CN114713399A (en) * | 2022-03-22 | 2022-07-08 | 南京理工大学泰州科技学院 | Uniform atomization spraying system based on all-terrain vehicle |
| CN114713399B (en) * | 2022-03-22 | 2024-02-13 | 南京理工大学泰州科技学院 | Uniform atomization spraying system based on all-terrain vehicle |
| CN114705435A (en) * | 2022-06-06 | 2022-07-05 | 中国飞机强度研究所 | Device and method for testing icing and water swallowing of aircraft engine in climate laboratory |
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