CN208395756U - Impact gun device and dust suppression equipment - Google Patents
Impact gun device and dust suppression equipment Download PDFInfo
- Publication number
- CN208395756U CN208395756U CN201820944119.8U CN201820944119U CN208395756U CN 208395756 U CN208395756 U CN 208395756U CN 201820944119 U CN201820944119 U CN 201820944119U CN 208395756 U CN208395756 U CN 208395756U
- Authority
- CN
- China
- Prior art keywords
- impact gun
- flow
- cylinder
- air
- airfoil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to environmental sanitation mechanical fields, disclose a kind of impact gun device and dust suppression equipment, the impact gun device includes the flow-guiding structure (4) of impact gun cylinder and setting in the impact gun cylinder (1), the flow-guiding structure (4) includes that outer surface is bullet-headed baffle (41), the outlet air end of the diminution end of the baffle (41) towards the impact gun cylinder (1).Impact gun device and dust suppression equipment provided by the utility model, bullet-headed baffle can play preferable guide functions to the air-flow in impact gun cylinder, the air-flow with certain angular velocity of rotation exported through blower can be made preferably to be converted into axial flow, air-flow is set to reach the state of opposite laminar flow, energy loss of the air-flow in impact gun cylinder is reduced to the maximum extent, the jet stream ability of air-flow is enhanced, the jet power of impact gun device is improved, facilitates the raising of working efficiency.
Description
Technical field
The utility model relates to environmental sanitation mechanical fields, more particularly to a kind of impact gun device and with its dust suppression equipment.
Background technique
Dust suppression vehicle is that the special vehicle for inhibiting dust pollution is realized by flushing liquors such as sprinkling dust suppression curing agent.Wherein, wind
Big gun is the core component for influencing dust suppression vehicle sprinkling distance.Flow-guiding structure design in existing impact gun device is unreasonable, and air-flow can not
It is preferably converted into axial flow and reaches the state of opposite laminar flow, energy loss of the air-flow in impact gun cylinder is larger, influences wind
The jet power of gun device causes working efficiency lower.
Accordingly, there exist design a kind of to can reduce energy loss of the air-flow in impact gun cylinder to enhance the jet stream ability of air-flow
Impact gun device needs.
Utility model content
The purpose of this utility model is to overcome energy loss of the air-flow of the existing technology in impact gun cylinder is larger
The problem of, a kind of impact gun device is provided, which can reduce energy loss of the air-flow in impact gun cylinder, enhance air-flow
Jet stream ability.
The another object of the utility model is to provide for a kind of dust suppression equipment including above-mentioned impact gun device.
To achieve the goals above, on the one hand the utility model provides a kind of impact gun device, and the impact gun device includes wind
Gun barrel and the flow-guiding structure being arranged in the impact gun cylinder, the flow-guiding structure include that outer surface is bullet-headed baffle,
Outlet air end of the diminution end towards the impact gun cylinder of the baffle.
In the above-mentioned technical solutions, bullet-headed baffle can play preferable water conservancy diversion to the air-flow in impact gun cylinder and make
With, can make through blower export the air-flow with certain angular velocity of rotation be preferably converted into axial flow, so that air-flow is reached phase
To the state of laminar flow, energy loss of the air-flow in impact gun cylinder is reduced to the maximum extent, is enhanced the jet stream ability of air-flow, is mentioned
The high jet power of impact gun device, facilitates the raising of working efficiency.
Preferably, the equation of the cross-sectional profiles line of the baffle are as follows: f (x)=± (- 0.0003x2-0.0051x+
277.2)。
Preferably, the flow-guiding structure includes the annular space between the outer surface and the impact gun cylinder of the baffle
Inside multiple deflectors of uniform intervals setting along circumferential direction, form multiple air-guiding aisles between multiple deflectors.
Preferably, the deflector include deflector main body and setting in the deflector main body towards the impact gun cylinder
Air intake one end airfoil structure.
Preferably, the chord length of the airfoil structure is b1, maximum camber is f1Max, maximum profile thickness are
C1Max, the relative thickness of airfoil C of the airfoil structure1The value range of max/b is 10%-15%, and aerofoil profile is with respect to camber
f1The value range of max/b is 0.06-0.1；The up-front radius of the airfoil structure is r3, r3Value range be 5mm-
6mm, the rear end of the air intake far from the impact gun cylinder of the airfoil structure and the smooth connection of deflector main body.
Preferably, one end of the outlet air end towards the impact gun cylinder of the deflector main body is close to the baffle
Side is provided with the notch for converging air-flow；And/or the airfoil structure is made of nonmetallic materials.
Preferably, the impact gun cylinder includes the steady air duct of straight-tube shape and the diameter that connect with the outlet air end of the steady air duct
Diminishing pressurization cylinder, the baffle are arranged in the pressurization cylinder；The impact gun cylinder includes being arranged in the steady air duct
Air intake bell shape wind gathering cylinder and be arranged in the pressurization cylinder outlet air end spraying ring.
Preferably, the impact gun device includes the coaxial and first order impeller being disposed adjacent and second in the impact gun cylinder
The blade of grade impeller, the first order impeller and the second level impeller is airfoil fan；The first order impeller and described
The impeller relatively described flow-guiding structure in the second level is arranged close to the air intake of the impact gun cylinder.
Preferably, the relatively described first order impeller of the second level impeller is arranged far from the air intake of the impact gun cylinder, institute
The quantity for stating the airfoil fan of first order impeller is less than the airfoil fan quantity of the second level impeller.
Preferably, the quantity of the airfoil fan of the first order impeller is N1, N1Value range be 3-6, institute
The quantity for stating the airfoil fan of second level impeller is N2, N2=(1.3-1.6) N1；The quantity of the deflector (42) is N3,
N3=(1.5-4) N1。
Preferably, the length of the wing chord of the airfoil fan is b, and maximum camber is fmax, and maximum profile thickness is
The value range of Cmax, the relative thickness of airfoil Cmax/b of the airfoil fan are 10%-15%, and aerofoil profile is with respect to camber fmax/b
Value range be 0.06-0.08, in which: the up-front radius of the airfoil fan be r1, r1Value range be 3mm-4mm；
And/or the radius of the rear of the airfoil fan is r2, r2Value range be 2mm-3mm.
Preferably, the first order impeller and the second level impeller are made of nonmetallic materials.
The utility model second aspect provides a kind of dust suppression equipment, and the dust suppression equipment includes above-mentioned impact gun device.
Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the impact gun device of the preferred embodiments of the present invention；
Fig. 2 is the cross section outer profile line chart of the baffle of the preferred embodiments of the present invention；
Fig. 3 is the schematic diagram of the flow-guiding structure of the preferred embodiments of the present invention；
Fig. 4 is the left view of the flow-guiding structure in Fig. 3；
Fig. 5 is the perspective view of the deflector of the preferred embodiments of the present invention；
Fig. 6 is the cross-sectional view of the airfoil structure of the deflector in Fig. 5；
Fig. 7 is the first order impeller of the impact gun device of the preferred embodiments of the present invention and the aerofoil profile leaf of second level impeller
The cross-sectional view of piece；
Fig. 8 is the partial structural diagram of the impact gun device of the preferred embodiments of the present invention.
Description of symbols
The steady air duct of 1 impact gun cylinder 11
12 pressurization cylinder, 13 wind gathering cylinder
14 spraying 2 first order impellers of ring
3 second level impeller, 4 flow-guiding structure
41 baffle, 42 deflector
421 deflector main body, 422 airfoil structure
G notch P wing chord
M middle line
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " is usual
Refer to reference to upper and lower, left and right shown in the drawings；" inside and outside " refers to inside and outside the profile relative to each component itself.
On the one hand the utility model provides a kind of impact gun device, the impact gun device includes impact gun cylinder 1 and is arranged described
Flow-guiding structure 4 in impact gun cylinder 1, the flow-guiding structure 4 include that outer surface is bullet-headed baffle 41, the baffle 41
Outlet air end of the diminution end towards the impact gun cylinder 1.Wherein, play guide functions is the outer surface of baffle 41, in order to reduce
Weight, baffle 41 can be tubular structure closed at both ends.
In the above-mentioned technical solutions, bullet-headed baffle 41 can play the air-flow in impact gun cylinder 1 and preferably lead
Stream effect, can make the air-flow with certain angular velocity of rotation exported through blower preferably be converted into axial flow, reach air-flow
To the state of opposite laminar flow, energy loss of the air-flow in impact gun cylinder is reduced to the maximum extent, enhances the jet stream energy of air-flow
Power improves the jet power of impact gun device, facilitates the raising of working efficiency.
In order to make air-flow preferably be converted into axial flow, air-flow is set to sufficiently achieve the state of opposite laminar flow, to greatest extent
Energy loss of the reduction air-flow in impact gun cylinder 1, as shown in Figure 2, it is preferable that the cross-sectional profiles line of the baffle 41
Equation are as follows: f (x)=(- 0.0003x2-0.0051x+277.2).
Shown in as shown in Figure 1, Figure 3 and Figure 4, it is preferable that the flow-guiding structure 4 includes the outer surface and institute in the baffle 41
State multiple deflectors 42 that uniform intervals are arranged along circumferential direction in the annular space between impact gun cylinder 1, multiple deflectors
Multiple air-guiding aisles are formed between 42.Wherein, deflector 42 is mountable on impact gun cylinder 1 and fits closely the appearance of baffle 41
Impact gun cylinder 1 can be divided into several zonules by face, such baffle 41 and deflector 42, not make air-flow between each region mutually not
Interference.It is a deflector 42 that the region for being is marked in Fig. 3.
As shown in figure 5, the deflector 42 includes deflector main body 421 and is arranged in 421 court of deflector main body
To the airfoil structure 422 of one end of the air intake of the impact gun cylinder 1.Wherein, airfoil structure 422 can be with bullet-headed baffle
41 fit closely.Airfoil structure 422 can preferably convert the air-flow with certain angular velocity of rotation flowed into impact gun cylinder 1
Along the air-flow of the axial direction of impact gun cylinder 1, to facilitate to further enhance the jet stream ability of air-flow.
As shown in Figure 6, it is preferable that the chord length of the airfoil structure 422 is b1, maximum camber is f1Max, most
Big profile thickness is C1Max, the relative thickness of airfoil C of the airfoil structure 4221The value range of max/b is 10%-15%, the wing
Type is with respect to camber f1Max/b value range is 0.06-0.1.And it is further preferred that the airfoil structure 422 is up-front
Radius is r3, r3Value range be 5mm-6mm, after the air intake far from the nearly impact gun cylinder 1 of the airfoil structure 422
End and the smooth connection of the deflector main body 421.Wherein, the plate thickness of the rear end of airfoil structure 422 can be with deflector main body 421
Consistency of thickness, and deflector main body 421 can be separately formed with airfoil structure 422 after reconnect together with.Certain deflector master
Body 421 and airfoil structure 422 can also be integrally formed.
In order to which the air-flow of former subregion is collected again, it is preferable that the deflector main body 421 towards the impact gun cylinder
One end of 1 outlet air end is provided with the notch G for converging air-flow in the side close to the baffle 41.It can reduce in this way
Because of air-flow blind area caused by air-flow subregion, enable the air-flow flowed out through impact gun cylinder 1 below by 14 surrounding of spraying ring of introduction
It is enough uniformly distributed, so that the water flow range that the portion nozzle caused by solving because of air-flow blind area on spraying ring 14 projects is closer
Problem.Additionally, it is preferred that the airfoil structure 422 is made of nonmetallic materials, make the panting action power of air-flow Yu airfoil structure 422
Smaller, aerodynamic noise is lower.
As illustrated in fig. 1, it is preferred that the steady air duct 11 of the impact gun cylinder 1 including straight-tube shape and with the steady air duct 11
The pressurization cylinder 12 of the reduced diameter of outlet air end connection, the baffle 41 are arranged in the pressurization cylinder 12, this facilitates
Further increase the jet stream ability of air-flow；In order to increase the air quantity entered in impact gun device and realize the purpose uniformly sprayed, institute
State the wind gathering cylinder 13 and be arranged in the pressurization that impact gun cylinder 1 includes the bell shape of air intake that the steady air duct 11 is arranged in
The spraying ring 14 of the outlet air end of cylinder 12.Wherein, spraying ring 14 is settable multiple and the diameter of multiple spraying rings 14 can it is different so as to
Suit is to improve the amount of injection of flushing liquor and the uniformity coefficient of injection, to improve working efficiency and work quality.
As illustrated in figures 1 and 8, it is preferable that the impact gun device includes coaxial in the impact gun cylinder 1 and is disposed adjacent
The blade of first order impeller 2 and second level impeller 3, the first order impeller 2 and the second level impeller 3 is airfoil fan；
The first order impeller 2 and the relatively described flow-guiding structure 4 of the second level impeller 3 are arranged close to the air intake of the impact gun cylinder 1.
Due to leaf that is coaxial in impact gun cylinder 1 and being disposed adjacent first order impeller 2 and second level impeller 3 (stage impeller) and stage impeller
Piece is airfoil fan, to can generate optimal flow under the smallest energy consumption, stream pressure is larger, is made from impact gun
The flushing liquor (such as water) that device sprays is converted into misty (such as water mist) ability when passing through spraying ring greatly enhances and can
Spray distance is significantly increased, working area is bigger, is conducive to the raising of working efficiency, while first order impeller and second level impeller
Blade be airfoil fan so that the eddy current effect in impact gun device is weaker, aerodynamic noise is smaller, and environmental-protecting performance is more preferable.
Wherein, hydraulic motor driving can be used in first order impeller 2 and second level impeller 3, and motor driven can also be used, and
First order impeller 2 and second level impeller 3 can be driven by same dynamical system, can also be separated and be driven by dynamical system independent
Dynamic, when for example, by using motor driven, first order impeller 2 and second level impeller 3 can be by a motor drivens, can also be by being coaxially disposed
Two motors respectively drive.
In order to reach flowed energy utilization rate most preferably, as illustrated in fig. 1, it is preferred that the second level impeller 3 is relatively described
First order impeller 2 is arranged far from the air intake of the impact gun cylinder 1, and the quantity of the airfoil fan of the first order impeller 2 is few
In the quantity of the airfoil fan of the second level impeller 3.And it is highly preferred that the aerofoil profile of the first order impeller 2
The quantity of blade is N1, N1Value range be 3-6, the quantity of the airfoil fan of the second level impeller 3 is N2,
N2=(1.3-1.6) N1.Wherein, the quantity N of the airfoil fan of the second level impeller 32It takes closest to (1.3-1.6) N1
Integer.To make air-flow preferably be converted into axial flow, so that air-flow is sufficiently achieved the state of opposite laminar flow, subtract to greatest extent
Energy loss of the little airflow in impact gun cylinder 1, it is preferable that the quantity of the deflector 42 is N3, N3=(1.5-4) N1.Wherein,
The quantity N of deflector 423It takes closest to (1.5-4) N1Integer.
In addition, as shown in Figure 7, it is preferable that the length of the wing chord P of the airfoil fan is b, and maximum camber is
Fmax, maximum profile thickness are Cmax, and the value range of the relative thickness of airfoil Cmax/b of the airfoil fan is 10%-
15%, value range of the aerofoil profile with respect to camber fmax/b is 0.06-0.08.It is further preferred that the leading edge of the airfoil fan
Radius be r1, r1Value range be 3mm-4mm；The radius of the rear of the airfoil fan is r2, r2Value range be
2mm-3mm.Wherein, the M in Fig. 7 is the middle line of airfoil fan.The direction that airfoil fan can preferably guide air-flow to flow, phase
Than the impeller using straight-plate-type blade, vortex situation is clearly better, and the noise of generation also greatly reduces, and air-flow flows through impeller
When the energy consumption that generates it is smaller, therefore under same power consumption situation, the air flow rate of generation is bigger.Meanwhile air-flow flows through
When impeller, pressure gets a promotion, and airfoil fan is more preferable to the hoisting power of pressure compared to straight-plate-type blade.In addition, single compared to former
Grade impeller, stage impeller has the function of second lift to pressure, therefore air-flow pressure after twin-stage aerofoil vane greatly improves.
In order to reduce the panting action power between air-flow and impeller to reduce aerodynamic noise, it is preferable that the first order impeller 2
It is made with the second level impeller 3 of nonmetallic materials.
In addition, as shown in figure 8, the outer diameter of the steady air duct 11 is D, the first order impeller 2 and the second level impeller 3
In the steady air duct 11, the first order impeller 2 is L at a distance from the hub centre of the second level impeller 3, described the
The outer diameter of one stage impeller 2 is D1, the outer diameter of the second level impeller 3 is D2, wherein D1=(0.85-0.96) D, D2=(0.85-
0.96) D, L=(0.15-0.32) D.Pass through the outer diameter D of outer diameter D, first order impeller 2 to steady air duct 11 in this way1, second level leaf
The outer diameter D of wheel 32, setting angle, the design of blade quantity and hub centre distance L etc. and the airfoil fan with stage impeller
Mutual cooperation, can be realized the effect for generating optimal flow under the smallest energy consumption, substantially increase stream pressure,
Make air-flow convert misty energy for the flushing liquor sprayed from spraying ring 14 to greatly enhance, spray distance is larger and operation is made an uproar
Sound is smaller.
The utility model second aspect provides a kind of dust suppression equipment, and the dust suppression equipment includes above-mentioned impact gun device.Its
In, dust suppression equipment can be the dust suppression vehicle that can be moved, and certain dust suppression equipment can also be the other equipment not moved.Due to the dust suppression
Equipment includes above-mentioned impact gun device, therefore has all or at least part of technical effects above for impact gun device, more
The details and effect of specific technical solution can refer to above.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model,
It is combined in any suitable manner including each particular technique feature.In order to avoid unnecessary repetition, the utility model
To various combinations of possible ways, no further explanation will be given.But these simple variants and combination equally should be considered as the utility model institute
Disclosure belongs to the protection scope of the utility model.
Claims (13)
1. a kind of impact gun device, which is characterized in that the impact gun device includes impact gun cylinder (1) and is arranged in the impact gun cylinder (1)
Interior flow-guiding structure (4), the flow-guiding structure (4) include that outer surface is bullet-headed baffle (41), the baffle
(41) outlet air end of the diminution end towards the impact gun cylinder (1).
2. impact gun device according to claim 1, which is characterized in that the side of the cross-sectional profiles line of the baffle (41)
Journey are as follows: f (x)=± (- 0.0003x2-0.0051x+277.2)。
3. impact gun device according to claim 1, which is characterized in that the flow-guiding structure (4) is included in the baffle
(41) multiple deflectors of uniform intervals setting along circumferential direction in the annular space between outer surface and the impact gun cylinder (1)
(42), multiple air-guiding aisles are formed between multiple deflectors (42).
4. impact gun device according to claim 3, which is characterized in that the deflector (42) includes deflector main body
(421) and setting the deflector main body (421) towards the impact gun cylinder (1) air intake one end airfoil structure
(422)。
5. impact gun device according to claim 4, which is characterized in that the chord length of the airfoil structure (422) is b1,
Maximum camber is f1Max, maximum profile thickness are C1Max, the relative thickness of airfoil C of the airfoil structure (422)1max/b
Value range be 10%-15%, aerofoil profile is with respect to camber f1The value range of max/b is 0.06-0.1；The airfoil structure
(422) up-front radius is r3, r3Value range be 5mm-6mm, the airfoil structure (422) far from the impact gun cylinder
(1) rear end of air intake and the smooth connection of the deflector main body (421).
6. impact gun device according to claim 4, it is characterised in that:
One end of the outlet air end towards the impact gun cylinder (1) of the deflector main body (421) is close to the baffle (41)
Side be provided with the notch (G) for converging air-flow；And/or
The airfoil structure (422) is made of nonmetallic materials.
7. impact gun device according to claim 1 to 6, which is characterized in that the impact gun cylinder (1) includes straight tube
The pressurization cylinder (12) of the steady air duct (11) of shape and the reduced diameter being connect with the outlet air end of the steady air duct (11), it is described
Baffle (41) setting is in the pressurization cylinder (12)；The impact gun cylinder (1) includes air inlet of the setting in the steady air duct (11)
The spraying ring (14) of the wind gathering cylinder (13) of the bell shape at end and setting in the outlet air end of the pressurization cylinder (12).
8. impact gun device according to claim 3, which is characterized in that the impact gun device is included in the impact gun cylinder (1)
First order impeller (2) and second level impeller (3) interior coaxial and be disposed adjacent, the first order impeller (2) and the second level
The blade of impeller (3) is airfoil fan；
The first order impeller (2) and the relatively described flow-guiding structure (4) of the second level impeller (3) are close to the impact gun cylinder (1)
Air intake setting.
9. impact gun device according to claim 8, which is characterized in that the relatively described first order of second level impeller (3)
Impeller (2) is arranged far from the air intake of the impact gun cylinder (1), and the quantity of the airfoil fan of the first order impeller (2) is few
In the quantity of the airfoil fan of the second level impeller (3).
10. impact gun device according to claim 9, which is characterized in that the airfoil fan of the first order impeller (2)
Quantity be N1, N1Value range be 3-6；The quantity of the airfoil fan of the second level impeller (3) is N2, N2
=(1.3-1.6) N1；The quantity of the deflector (42) is N3, N3=(1.5-4) N1。
11. the impact gun device according to any one of claim 8-10, which is characterized in that the wing chord of the airfoil fan
(P) length is b, and maximum camber is fmax, and maximum profile thickness is Cmax, the relative thickness of airfoil of the airfoil fan
The value range of Cmax/b is 10%-15%, and value range of the aerofoil profile with respect to camber fmax/b is 0.06-0.08, in which:
The up-front radius of the airfoil fan is r1, r1Value range be 3mm-4mm；And/or
The radius of the rear of the airfoil fan is r2, r2Value range be 2mm-3mm.
12. impact gun device according to claim 8, which is characterized in that the first order impeller (2) and the second level leaf
Wheel (3) is made of nonmetallic materials.
13. a kind of dust suppression equipment, which is characterized in that the dust suppression equipment includes according to claim 1 described in any one of -12
Impact gun device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820944119.8U CN208395756U (en) | 2018-06-19 | 2018-06-19 | Impact gun device and dust suppression equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820944119.8U CN208395756U (en) | 2018-06-19 | 2018-06-19 | Impact gun device and dust suppression equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208395756U true CN208395756U (en) | 2019-01-18 |
Family
ID=65132825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820944119.8U Active CN208395756U (en) | 2018-06-19 | 2018-06-19 | Impact gun device and dust suppression equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208395756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203160A (en) * | 2021-06-07 | 2021-08-03 | 何育林 | Air flow channel assembly of guide plate |
-
2018
- 2018-06-19 CN CN201820944119.8U patent/CN208395756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203160A (en) * | 2021-06-07 | 2021-08-03 | 何育林 | Air flow channel assembly of guide plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103807102B (en) | The narrow pipe wind-collecting wind generating system of through type | |
| CN206175256U (en) | High -efficient axial fan | |
| CN204646777U (en) | Radial flow impeller and fan unit | |
| CN201757064U (en) | Mixed-flow blower | |
| CN205101257U (en) | Cylindric centrifugal fan | |
| CN105156346A (en) | Axial centrifugal fan | |
| CN203796497U (en) | Straight-through type narrow tube wind-collecting wind power generation system | |
| CN110374900A (en) | A kind of flow-mixing blower fan with sinusoidal pattern meridional channel | |
| CN202326414U (en) | Axial flow fan | |
| CN108939757A (en) | Impact gun device and dust suppression equipment | |
| CN103486081B (en) | Axial flow fan blade, fan and air conditioner outdoor unit | |
| CN208395756U (en) | Impact gun device and dust suppression equipment | |
| CN210021552U (en) | Low-noise fog gun machine | |
| CN108757571B (en) | Design method of square box type bidirectional water inlet flow passage | |
| CN103122872A (en) | Axial flow fan | |
| CN105673559B (en) | Efficient meridionally-accelerated axial flow fan with casing | |
| CN105179275A (en) | Novel mixed flow pipeline fan | |
| CN208839824U (en) | A kind of sanitation cart and fog gun | |
| CN209180085U (en) | A kind of flow-guiding type air intake centrifugal blower | |
| CN204003615U (en) | A kind of spiral case of centrifugal blower | |
| CN212838631U (en) | Axial fan that makes an uproar falls in damping | |
| CN211874750U (en) | Cooling ventilator for subway brake resistor | |
| CN205047474U (en) | Axial centrifugal fan | |
| CN208474204U (en) | A kind of fog gun and the sanitation cart using the fog gun | |
| CN107725285A (en) | A kind of wind energy conversion system vortex decay device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |