CN206647277U - A kind of pulsing jet vavuum pump of horizontal water outlet - Google Patents
A kind of pulsing jet vavuum pump of horizontal water outlet Download PDFInfo
- Publication number
- CN206647277U CN206647277U CN201720333979.3U CN201720333979U CN206647277U CN 206647277 U CN206647277 U CN 206647277U CN 201720333979 U CN201720333979 U CN 201720333979U CN 206647277 U CN206647277 U CN 206647277U
- Authority
- CN
- China
- Prior art keywords
- impeller
- water outlet
- vavuum pump
- mixing chamber
- horizontal water
- 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 discloses a kind of pulsing jet vavuum pump of horizontal water outlet, including be sequentially connected suction room, mixing chamber, playpipe, suck indoor location impeller distributor, square stator and impeller, the side opening of impeller distributor one, and the opening is connected with square stator entrance, square stator outlet is corresponding with impeller eye, and multiple blades are installed on impeller, nozzle is formed between adjacent blades；Impeller is driven by motor, and working water is formed into discontinuous jet from nozzle into mixing chamber through impeller distributor, square stator and impeller, into the direction of mixing chamber and playpipe diameter parallel or overlap, playpipe is horizontally disposed.The pulsing jet vavuum pump of the horizontal water outlet of the utility model combines the structure and advantage of centrifugal pump and Pulsed Jet Pump, has the advantages that horizontal water outlet, efficiency high, reliable operation, cavitation performance is good, noise is low and cost is cheap.
Description
Technical field
It the utility model is related to a kind of jet pump, more particularly to a kind of pulsing jet vavuum pump of horizontal water outlet.
Background technology
Jet vacuum pump is to carry out mass transfer using shearing and the turbulent diffusion effect of jet to pass energy, without rotatable parts, tool
There are simple in construction, reliable operation, low cost, operation and maintenance cost low, be usually used in the needs such as power plant, chemical industry, tobacco, salt manufacturing and take out
The occasion of vacuum.The operation principle of jet vacuum pump determines that its is less efficient, and research shows using pulsed flow as its work
Power can effectively improve the jet efficiency of pump, and the jet vacuum pump of this form is referred to as pulsing jet vavuum pump.
Patent CN103967810B discloses a kind of centrifugal vacuum pump, by centrifugal pump and jet turbomolecular vacuum pump from structure
With reference to, but still fall within one kind of pulsing jet vavuum pump.But the vavuum pump in the patent is water-out manners obliquely, with level
Face is at 45 ° so that delivery port is significantly less than the base of pump, therefore cannot be used for the occasion of the horizontal water outlet of needs.Patent
The mode that the pump is used in combination with pond is provided in CN103967810B, but pond investment is big, it is big to take up an area, and be not suitable for directly
The occasion of discharge.
Need the higher working water of pressure being converted into high-speed jet by nozzle during jetting stream vacuum pump work, and higher pressure
The working water of power is generally provided by centrifugal pump, if directly using the high-speed rotating impeller in centrifugal pump as jet vacuum pump
Nozzle uses, and will can cancel conversion between centrifugal pump and jet vacuum pump, transitional link, and produce pulsing jet effect
Fruit, so as to which operating efficiency be substantially improved.
Utility model content
The purpose of this utility model be to provide one kind can horizontal water outlet, efficiency high, reliable operation, it is compact-sized, make
Valency and the pulsing jet vavuum pump of the low horizontal water outlet of maintenance cost.
To achieve the above object, the utility model uses following technical scheme：
This hair provides a kind of pulsing jet vavuum pump of horizontal water outlet, including be sequentially connected suction room, mixing chamber, spray
Pipe, the suction indoor location impeller distributor, square stator and impeller, the side opening of impeller distributor one are penetrated, and this is opened
Mouth is connected with the square stator entrance, and the square stator outlet is corresponding with the impeller eye, pacifies on the impeller
Multiple blades are filled, nozzle is formed between the adjacent blade；The impeller and motor connection, the impeller is driven by the motor
Rotate at a high speed, working water is formed into discontinuous jet through impeller distributor, square stator and impeller from the nozzle and enters institute
State in mixing chamber, into the direction in the mixing chamber and the playpipe diameter parallel or overlap, the playpipe is water
It is flat to set.
Further, on the pulsing jet vavuum pump of described horizontal water outlet, the center line and water of the square stator
The angle α of plane is in the range of 45 ± 4 °, wherein rotating clockwise as on the occasion of rotating counterclockwise as negative value, to ensure impeller
Influent stream angle is in the range of ± 10 °.
Further, on the pulsing jet vavuum pump of described horizontal water outlet, the water inlet of the square stator is with going out
The area ratio at the mouth of a river is 1:1-2, the water inlet and/or delivery port of the square stator for taper or streamlined or by straight section and
Bore section composition.
Further, on the pulsing jet vavuum pump of described horizontal water outlet, the blade is prismatic blade, and quantity is
15-35 pieces.
Further, on the pulsing jet vavuum pump of described horizontal water outlet, the inner arc and back of the body arc of the blade are
It is streamlined or formed by straightway and segmental arc.
Further, on the pulsing jet vavuum pump of described horizontal water outlet, the entrance on the right side of the mixing chamber is ellipse
Circle, the outlet with the suction room are connected；Outlet on the left of the mixing chamber is circle.
Further, on the pulsing jet vavuum pump of described horizontal water outlet, the length of the mixing chamber is described mixed
Close room outlet diameter 1-5 times.
Further, on the pulsing jet vavuum pump of described horizontal water outlet, the playpipe be successively by contraction section,
Flat segments and diffuser three parts composition.
It is further preferred that on the pulsing jet vavuum pump of described horizontal water outlet, institute's contraction section, flat segments and expansion
Section is dissipated for coaxial and horizontal connection.
The utility model uses above-mentioned technical proposal, compared with prior art, has the following technical effect that：
The pulsing jet vavuum pump of horizontal water outlet of the present utility model combine centrifugal pump and Pulsed Jet Pump structure and
Advantage, intermediate conversion, transitional link are eliminated, and realize horizontal water outlet, therefore can with horizontal water outlet, efficiency high, work
Lean on, cavitation performance is good, shakes the advantages that small, noise is low and cost is cheap；And its advanced design, compact-sized, operation letter
It is single, convenient disassembly, it is easy to safeguard, the ratio of performance to price is high, is advantageous to promote the use.
Brief description of the drawings
Fig. 1 is a kind of structural front view of the pulsing jet vavuum pump of horizontal water outlet of the utility model；
Fig. 2 is the assembling schematic diagram of impeller and stator in a kind of pulsing jet vavuum pump of horizontal water outlet of the utility model；
Fig. 3 is the structural representation of stator in a kind of pulsing jet vavuum pump of horizontal water outlet of the utility model；
Fig. 4 is the structural representation of impeller in a kind of pulsing jet vavuum pump of horizontal water outlet of the utility model.
Wherein, 1- sucks room, 2- impeller distributors, the square stators of 3-, 4- mixing chambers, 5- impellers, 6- blades, 7- injections
Pipe, 71- contraction sections, 72- flat segments, 73- diffusers.
Embodiment
The utility model is described in more detail below by specific embodiment, for a better understanding of this reality
With new, but following embodiments are not intended to limit the scope of the utility model.
As shown in Figure 1-2, the utility model embodiment provides a kind of pulsing jet vavuum pump of horizontal water outlet, including according to
The suction room 1 of secondary connection, mixing chamber 4, playpipe 7, suction install impeller distributor 2, square stator 3 and impeller 5, leaf in room 1
The side opening of distributor 2 one is taken turns, and the opening is connected with the square entrance of stator 3, the square outlet of stator 3 is relative with the entrance of impeller 5
Should, certain interval is left therebetween, ensures that the rotation of impeller 5 is interference-free, multiple blades 6 are installed on impeller 5, it is adjacent
Groove-like nozzle is formed between blade 6；In addition, the ring heart one end of impeller 5 is closed by a circular orifice, the other end opens wide, impeller point
The open ports that orchestration 2 and square stator 3 pass sequentially through impeller 5 are put into, and motor rotation axis are connected with circular orifice, and impeller distributes
Device 2 and square stator 3 are fixed on the pump housing, are rotated at a high speed by motor driven impeller 5, by working water through impeller distributor 2, square
Stator 3 and impeller 5 form discontinuous jet from nozzle and entered in mixing chamber 4, the speed of the working water thrown away from nozzle at high speeds
Size is related to entering the flow channel shape between the angle of mixing chamber 4 and the rotating speed and blade 6 of impeller 5, to make horizontal water outlet
The efficiency of pulsing jet vavuum pump is maximized, and working water should be made to enter the direction of mixing chamber 4 with the diameter parallel of playpipe 7 or again
Close, and playpipe 7 is horizontally disposed.
Specifically, discontinuous jet is formed from nozzle is into the velocity magnitude of the working water in mixing chamber 4 and direction
The aggregate velocity of the peripheral speed of impeller 5 and radial velocity, the water (flow) direction of the delivery port working water of impeller 5 and the angle of wheel distributor 2
Degree, the factor of working flow three are relevant, can be realized by adjusting inflow, the rotating speed of impeller 5, the angle of square stator 3, adjustment wheel
The purpose of the angle of distributor 2 is the high-speed pulse flow jet work water projected from the delivery port of impeller 5 to hit the side of loss reduction
Formula enters in mixing chamber 4, so that the efficiency of the pulsing jet vavuum pump of horizontal water outlet maximizes.
On the basis of above-mentioned technical proposal, on the pulsing jet vavuum pump of the horizontal water outlet of the present embodiment, such as Fig. 1 and
Shown in Fig. 2, wherein, Fig. 2 is the assembling schematic diagram of square stator 3 and impeller 5, for make working water enter mixing chamber 4 direction with
The diameter parallel of playpipe 7 or coincidence, the angle α of the center line of square stator 3 and horizontal plane is arranged in the range of 45 ± 4 °,
Wherein rotate clockwise as on the occasion of rotating counterclockwise as negative value, to ensure the influent stream angle of impeller 5 in the range of ± 10 °, reduce leaf
The working flow loss of 4 leading edge locus is taken turns, so as to ensure that pulsing jet vavuum pump has maximum amount of jet,.
On the basis of above-mentioned technical proposal, on the pulsing jet vavuum pump of the horizontal water outlet of the present embodiment, such as Fig. 3 institutes
The structural representation of square stator 3 is shown as, square stator 3 can ensure because impeller 5 acts on the working water flowed through to be square
Flow velocity, it is also easy to process；The water inlet of square stator 3 is 1 with delivery port area ratio:1-2, preferably square stator 3
Water inlet and delivery port area ratio be 1:1.6-2, the water inlet and/or delivery port of square stator 3 are by straight section and/or cone section
Composition, or the water inlet of square stator 3 and/or delivery port are processed as taper or streamlined；Preferably, square stator 3 is intake
Mouth width h1 is 93mm, and delivery port width h2 is 81mm, and water inlet is 1.15 with delivery port area ratio, by straight section and cone section two
Part forms, and can also process tapered or streamlined.Preferably, the square water inlet width h1 of stator 3 is used as 95mm, delivery port
Width h2 is 85mm, and water inlet is 1.2 with delivery port area ratio, is made up of straight section and cone section two parts.
In the technical of above-mentioned technical proposal, on the pulsing jet vavuum pump of the horizontal water outlet of the present embodiment, impeller 5
Open area of intaking is big, and water outlet open area is small, and impeller 5 is leaned on when ensureing to do working medium by water in the pulsing jet vavuum pump course of work
Project discrete water beam surface one by one to carry under one's arms away air and establish vacuum, so water Shu Yue is more, more thin better, so aspirate
Tolerance will also increase significantly.
On the basis of above-mentioned technical proposal, on the pulsing jet vavuum pump of the horizontal water outlet of the present embodiment, blade 6 is
Prismatic blade, 15-35 pieces should be taken to reach greater efficiency, blade quantity preferably can be also adjusted according to pulse frequency, be such as reduction
The quantity of blade 6 is arranged to 10-15 pieces by the pulse frequency of working water injection, or in order to increase the pulse frequency of working water injection
The quantity of blade 6 is arranged to 25-40 pieces.It is highly preferred that the research discovery that the application utility model people is creative, use are square
The water inlet width h1 of stator 3 is 72mm, and delivery port width h2 is 95mm, and water inlet is 1.8 with delivery port area ratio, by straight section
With cone section two parts composition, it is possible to increase gas-liquid mixed transmission efficiency, while will suction chamber inlet be symmetrically changed to by top by
Lower section enters, and can effectively reduce cavitation, improve performance and the safe operation of pump.
In addition, the inner arc of blade 6 and back of the body arc form by straightway and segmental arc, or process tapered or streamlined.This reality
Suction room with the pulsing jet vavuum pump of new horizontal water outlet is more compact, compared to the suction room of existing centrifugal vacuum pump
1/3rd are reduced to half, it is preferable that are illustrated in figure 4 the structural representation of impeller 5 and blade 6, blade 6 enters waterside
Width b1 is 0.8mm, and outlet edge arc length is 22.35mm；The inner arc of blade 5 is made up of straightway and segmental arc, straightway and level
The angle α in face is 45 °, and segmental arc radius R1 is 19mm；Blade 6 is carried on the back arc and is made up of straightway and segmental arc, straightway and horizontal plane
Angle β is 78.3 °, and segmental arc radius R2 is 13.1mm.So, water forms groove-type nozzle between blade 6 has acceleration,
The size and Orientation that discontinuous flow jet work water-jet enters mixing chamber 4 is the peripheral speed of impeller 5 and the aggregate velocity of radial velocity,
The center line of square stator 3 and the diameter parallel of mixing chamber 4 or overlapped in the utility model test, the number of blade 6 is 24, is transported
Current radial velocity is about 36m/s after turning, and peripheral speed 45m/s, the aggregate velocity of final current is about 58m/s so that arteries and veins
Rushing jet vacuum pump has higher jetting speed.
In the technical of above-mentioned technical proposal, on the pulsing jet vavuum pump of the horizontal water outlet of the present embodiment, mixing chamber 4
The entrance on right side is ellipse, is connected with the outlet for sucking room 1；The outlet in the left side of mixing chamber 4 is circle；The length of mixing chamber 4
For 1-5 times of the outlet diameter of mixing chamber 4, it is preferable that the length of mixing chamber 4 is 3-4.5 times of the outlet diameter of mixing chamber 4, is used for
Make working water and be sucked water and be sufficiently mixed in mixing chamber 4 uniformly, and reduce the pressure loss of the mixing water in mixing chamber 4；
It is further preferable that the entrance on the right side of mixing chamber 4 is ellipse, it is connected with the outlet for sucking room 1；The outlet in the left side of mixing chamber 4 is same
Sample is ellipse, and corresponding playpipe 7 is also oval ducts.
In the technical of above-mentioned technical proposal, on the pulsing jet vavuum pump of the horizontal water outlet of the present embodiment, such as Fig. 1 institutes
Show, playpipe 7 is to be made up of successively contraction section 71, flat segments 72 and the three parts of diffuser 73, is sprayed from from the nozzle between blade 6
The working water gone out causes discontinuous jet, forms the pulsing jet with high flow velocities, now the porch of contraction section 71 because
The air of surrounding is swept away by pulsing jet and forms vacuum, and the suction aqueous fluid conveyed is sucked from suction hose, two plumes
Body mixes in contraction section 71 and carries out momentum-exchange, makes to be increased by the kinetic energy of trandfer fluid, due to the inlet part of contraction section 71
Directly it is connected with the outlet of mixing chamber 4 and the shell of impeller 5, so, the import section of contraction section 71 is the square and combination of circular arc
Shape；Exported as mixed flow flows to contraction section 71, the cross sectional shape of contraction section 71 is gradually to rounded transitional, and current are by shrinking
Section enters the constant region of flat segments 72 of radius after accelerating；The effect of contraction section 71 and flat segments 72 is to make working water with being absorbed water
It is well mixed before diffuser 73 is entered, diffuser 73 is entered with even velocity of flow, kinetic energy is become in the form of Minimal energy loss
For pressure energy.Therefore, in order to improve the performance of pulsing jet vavuum pump, the spray that is made up of contraction section 71 and the diffuser 73 of flat segments 72
Pipe 7 is penetrated using coaxially being horizontally mounted, two fluids can be made well mixed in contraction section 71 and flat segments 72, and can use compared with
Short mixing length, to subtract the friction loss between mixed flow and playpipe 7.
In addition, under conditions of fluid-mixing enters diffuser 73 with uniform velocity field, kinetic energy is converted to the mistake of pressure energy
Journey is carried out in the case of minimal energy losses, i.e., now pulsing jet vavuum pump has higher efficiency, and mixing is straight
The velocity field for being mainly used for the balanced fluid-mixing before fluid-mixing enters diffuser 73 of section 72.So certain is mixed
It is essential during length to close, and the mixing length of flat segments 72 is about 2-8 times of diameter at flat segments 72 in the utility model.
The operation principle of the pulsing jet vavuum pump of the horizontal water outlet of the utility model is：Before electric motor starting, in mixing chamber 4
Space does not form vacuum state, and being pumped into water can not utilize the pressure differential of atmospheric pressure to enter in mixing chamber 4, pulsing jet vacuum
Pump also can not normal work；When the motor is energized, motor is rotated at a high speed by rotating shaft impeller 5 so that working water flows successively
Enter through impeller distributor 2 and square stator 3 at a high speed in the impeller 5 of rotation, through certain angle and speed from gap between blade 6
Thrown away in the nozzle of composition, it is at regular intervals between the nozzle formed by the gap of blade 6, therefore when impeller 5 rotates at a high speed
When, the working water sprayed from nozzle causes discontinuous jet, the pulsing jet with high flow velocities is formed, now in contraction section 71
Porch forms vacuum because the air of surrounding is swept away by pulsing jet, and the suction aqueous fluid conveyed is inhaled from suction hose
Enter, two fluids mixes in mixing chamber 4 and carries out momentum-exchange, because working water enters the direction of mixing chamber 4 with being horizontally disposed with
Playpipe 7 diameter parallel or coincidence so that friction loss between mixed flow and playpipe 7 is minimum, realizes pulse
The horizontal water outlet of jet vacuum pump is directly to discharge, and ensure that the efficiency of pulsing jet vavuum pump maximizes.
Specific embodiment of the utility model is described in detail above, but it is intended only as example, and this practicality is new
Type is not restricted to particular embodiments described above.To those skilled in the art, it is any that the utility model is carried out
Equivalent modifications and substitute also all among category of the present utility model.Therefore, spirit of the present utility model and model are not being departed from
Lower made impartial conversion and modification are enclosed, should all be covered in the scope of the utility model.
Claims (9)
1. a kind of pulsing jet vavuum pump of horizontal water outlet, including be sequentially connected suction room (1), mixing chamber (4), playpipe
(7), it is characterised in that impeller distributor (2), square stator (3) and impeller (5), the leaf are installed in suction room (1)
Take turns the side opening of distributor (2) one, and the opening is connected with square stator (3) entrance, square stator (3) outlet and
Impeller (5) entrance is corresponding, and multiple blades (6) are installed on the impeller (5), spray is formed between the adjacent blade (6)
Mouth；The impeller (5) and motor connection, the impeller (5) is driven to rotate at a high speed by the motor, by working water through the impeller
Distributor (2), square stator (3) and impeller (5) form discontinuous jet from the nozzle and entered in the mixing chamber (4),
And enter the diameter parallel of direction and the playpipe (7) of the mixing chamber (4) or overlap, the playpipe (7) is horizontal
Set.
2. the pulsing jet vavuum pump of horizontal water outlet according to claim 1, it is characterised in that the square stator (3)
Center line and horizontal plane angle α be 45 ± 4 °.
3. the pulsing jet vavuum pump of horizontal water outlet according to claim 1, it is characterised in that the square stator (3)
Water inlet and delivery port area ratio be 1:1-2, the water inlet and/or delivery port of the square stator (3) for taper or
Streamlined is made up of straight section and cone section.
4. the pulsing jet vavuum pump of horizontal water outlet according to claim 1, it is characterised in that the blade (6) is straight
Blade, quantity are 15-35 pieces.
5. the pulsing jet vavuum pump of horizontal water outlet according to claim 4, it is characterised in that the blade (6) it is interior
Arc and back of the body arc are streamlined or formed by straightway and segmental arc.
6. the pulsing jet vavuum pump of horizontal water outlet according to claim 1, it is characterised in that the mixing chamber (4) is right
The entrance of side is ellipse, and the outlet with suction room (1) is connected；Outlet on the left of the mixing chamber (4) is circle.
7. the pulsing jet vavuum pump of horizontal water outlet according to claim 6, it is characterised in that the mixing chamber (4)
Length is 1-5 times of the mixing chamber (4) outlet diameter.
8. the pulsing jet vavuum pump of horizontal water outlet according to claim 1, it is characterised in that the playpipe (7) is
It is made up of successively contraction section (71), flat segments (72) and diffuser (73) three parts.
9. the pulsing jet vavuum pump of horizontal water outlet according to claim 8, it is characterised in that institute's contraction section (71), put down
Straight section (72) and diffuser (73) are coaxial and horizontal connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720333979.3U CN206647277U (en) | 2017-03-31 | 2017-03-31 | A kind of pulsing jet vavuum pump of horizontal water outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720333979.3U CN206647277U (en) | 2017-03-31 | 2017-03-31 | A kind of pulsing jet vavuum pump of horizontal water outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206647277U true CN206647277U (en) | 2017-11-17 |
Family
ID=60275561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720333979.3U Active CN206647277U (en) | 2017-03-31 | 2017-03-31 | A kind of pulsing jet vavuum pump of horizontal water outlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206647277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837822A (en) * | 2017-03-31 | 2017-06-13 | 武汉武泵泵业制造有限公司 | A kind of pulsing jet vavuum pump of horizontal water outlet |
-
2017
- 2017-03-31 CN CN201720333979.3U patent/CN206647277U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837822A (en) * | 2017-03-31 | 2017-06-13 | 武汉武泵泵业制造有限公司 | A kind of pulsing jet vavuum pump of horizontal water outlet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101936310A (en) | Fan without fan blades | |
| JP2009544893A (en) | Impact turbine used in bidirectional flow | |
| CN108825552B (en) | Air treatment equipment, fan and centrifugal fan blade thereof | |
| JPH0674754B2 (en) | Gas turbine engine | |
| CN103477086A (en) | Pump device and pump system | |
| CN109737100A (en) | A kind of exhaust inlet guide vane combines regulating device and method with vaned diffuser | |
| CN106224249A (en) | Low noise self-priming combination pump | |
| CN206647277U (en) | A kind of pulsing jet vavuum pump of horizontal water outlet | |
| CN207064252U (en) | A kind of jet pump | |
| CN106837822A (en) | A kind of pulsing jet vavuum pump of horizontal water outlet | |
| CN206647269U (en) | One kind centrifugation Pulsed Jet Pump | |
| KR20150120168A (en) | Centrifugal type mixed flow blower | |
| CN110374925A (en) | A kind of bilayer collector and the flow-mixing blower fan for assembling the double-deck collector | |
| CN106837805A (en) | One kind centrifugation Pulsed Jet Pump | |
| CN220910065U (en) | Volute and range hood | |
| CN102297165A (en) | Guide vane type rotary spraying jet pump | |
| CN206071889U (en) | A kind of low noise self-priming combination pump | |
| CN102418718A (en) | Fan blade-free fan device | |
| CN105179275A (en) | Novel mixed flow pipeline fan | |
| CN111220000A (en) | Water vector suspension atomization cooling tower | |
| JPH0434000B2 (en) | ||
| CN215723223U (en) | Multi-cavity gas and air mixing device | |
| CN206071890U (en) | A kind of vortex combination pump for strengthening self-priming | |
| CN212204625U (en) | Gas stove | |
| CN211874765U (en) | Centrifugal through-flow high-jet-speed water and mist injection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |