CN209302568U - A kind of micro-nano bubble water generator - Google Patents

Abstract

The utility model relates to a kind of micro-nano bubble water generators, including pump case, pump cover, and pump case and pump cover are at blending space；Pilot hole is provided on pump cover；Mixing arrangement includes main impeller and accessory impeller, and main impeller is semi-open type structure, main impeller end plates and preoral loop, several primary blades of connecting pin panel and preoral loop；Preoral loop is located at the pilot hole of pump cover, and the hole wall clearance fit of the outer wall of preoral loop and pilot hole, and inner wall and the accessory impeller of preoral loop are attached；Further include a driving device, is arranged on pump case, driving device is attached by drive shaft and end plates.The utility model is sheared repeatedly using the bubble that mixing arrangement generates the gas inputted in air inlet pipe, is stirred, is mixed, is pressurizeed, bubble size is set to reach micron or nanoscale, and it is stably dissolved in water, the improvement to main impeller and the connection type of accessory impeller can also be passed through, effectively alleviate causes water-aspirator pressure and flow to decline too fast problem because of air inlet, greatly improves the using effect for generating air-bubble.

Description

A kind of micro-nano bubble water generator

Technical field

The utility model relates to technical field of water treatment equipment, especially a kind of to generate the micro-nano of micro-nano bubble Bubble water generator.

Background technique

In sewage disposal process, air, oxygen or other gases is often needed to be dissolved in a manner of imperceptible bubble In sewage water body, according to actual needs, different gas can be dissolved in water and achieve the effect that needs；Under normal circumstances, gas Bubble partial size is smaller, and bubble concentration is higher, and the easier solid liquid interface with water body is adhered to, and is more conducive to other substances in water body Or the absorption of organism.Also using the air bearing and aeration effect of micro-nano bubble, reinforce organic matter of sewage and microorganism with The contact of dissolved oxygen.To make microorganism in pond generate oxidation point to dirty Organic substance in water under conditions of having sufficient dissolved oxygen Solution effect.

In the prior art, air is introduced directly into the negative pressuren zone of water pump half-opened impeller, gas is obtained by the rotation of impeller Soaked, but can be because of air and water mixing is uneven generates cavitation erosion, it be less to lead to generate micro-nano number of bubbles, also results in pump Boosting capability decline.So the further extending shaft of meeting, and accessory impeller is separately installed in main impeller front end on axis, can solve gas and water Mixing and water pump boost performance problem, but the fibrous sundries in sewage can be wrapped on extending shaft, influence the performance of pump, seriously When sewage in fibrous sundries, also will cause water pump blocking.It is more main also reside in from pump case come out air-bubble directly into Enter water body, part bubble is caused to have enough time being dissolved into water not yet just from casing outlet discharge release, and there will be part at this time Air pocket is formed after the coalescence of gas bubbler to be precipitated from water quickly, and gas bubble low efficiency is caused.

According to this, those skilled in the art are badly in need of providing a kind of micro-nano bubble water generator, can not only increase micro-nano Number of bubbles makes bubble size reach micron or nanoscale, and is stably dissolved in water, moreover it is possible to alleviate because air inlet leads to water pump Pressure and flow decline too fast problem.

Summary of the invention

The purpose of this utility model is a kind of micro-nano bubble water generator to solve the above problem, by generation Bubble sheared, stirred, mixed, pressurizeed repeatedly, so that bubble size is reached micron or nanoscale, and be stably dissolved in water In, water-aspirator pressure and flow decline too fast problem caused by effectively alleviating because of air inlet, greatly improve and generate air-bubble Using effect.

The technical scheme that the utility model is provided is as follows:

A kind of micro-nano bubble water generator, comprising:

One pump case, a pump cover, the pump case and the pump cover constitute a blending space；

A pilot hole is provided on the pump cover；

One mixing arrangement, the mixing arrangement include a main impeller and an accessory impeller, and the main impeller is semi-open type structure, The main impeller of the semi-open type structure includes end panels and a preoral loop, and connects the end plates and the preoral loop Several primary blades；

The preoral loop is located at the pilot hole of the pump cover, and the outer wall of the preoral loop and the pilot hole Hole wall clearance fit, the inner wall of the preoral loop are attached with the accessory impeller；

Further include a driving device, be arranged on the pump case, the driving device passes through a drive shaft and the end Panel is attached.

In the technical program, carried out using the bubble that mixing arrangement generates the gas inputted in blending space in air inlet pipe It shears, stir repeatedly, mixing, pressurization, so that bubble size is reached micron or nanoscale, and be stably dissolved in water, such energy Enough oxygenolysis realized to dirty Organic substance in water.It simultaneously can also changing by the connection type to main impeller and accessory impeller Into, under the drive of the drive, realize rotate synchronously on the basis of, caused by effectively alleviating because of air inlet water-aspirator pressure and Flow declines too fast problem, greatly improves the using effect for generating air-bubble.

Preferably, several the first protrusions have been evenly distributed on the outer surface of the primary blades, first protrusion is in One of multi-prism taper or blade-like.

In the technical program, it is arranged on the outer surface (i.e. outer surface is upstream face when main impeller rotates) of primary blades First protrusion, and the first protrusion is further arranged to one of multi-prism taper or blade-like.Purpose is to utilize polygonal pyramid Shape or blade-shaped structure, the water in main impeller high-speed rotation in primary blades runner quickly flow, further progress cutting, Bubble crushing, and be pressurized under the action of the centrifugal force, make bubble compression size reduction, keeps more micro-nano bubbles molten rapidly Solution is in water.

Preferably, the accessory impeller includes an outer ring and an inner core, and for connecting the outer ring and the inner core Several back blades, several described back blades are uniformly distributed at distributing shape around from the inner core, the inner core with it is described Drive shaft coaxial line setting.

In the technical program, by the improvement to accessory lobes wheel construction, efficiently solves previous accessory impeller and be fixed on drive shaft Extending shaft on, cause drive shaft to be easy the problem of being wound by sundries.Inner core and drive shaft are coaxially set simultaneously.This Sample can also make main impeller and accessory impeller be rotated around same central axis, guarantee stationarity and synchronism when its rotation.

It is further preferred that the outer wall of the outer ring is with the inner wall of the preoral loop using one in being threadedly coupled or welding Kind mode is attached.

It is to guarantee by the outer wall of outer ring with the inner wall of preoral loop using being threadedly coupled or welding in the technical program In the case where driving device driving main impeller rotation, while accessory impeller is driven to be rotated by preoral loop.And use this two Person's connection type mainly ensure that bonding strength, and avoiding rotating for a long time causes the obscission of accessory impeller to occur.It can also lead to Cross screw thread connection type accessory impeller can be dismounted at any time after to being cleared up in blending space, it is ingenious in design rationally.

It is further preferred that the blade face of the back blades is obliquely installed, and constitutes a slanted angle with horizontal plane, it is described to incline The angle of oblique angle is between 5 °~45 °.

In the technical program, the blade face of back blades is arranged to tilt, and constitutes a slanted angle with horizontal plane, and tilted The setting in direction is set according to accessory impeller direction of rotation, is mainly acted on to generate plug-flow into blending space.

It is further preferred that the edge of the back blades towards water inlet side is arranged to sharp bladed, towards water outlet side Edge is arranged to zigzag.

In the technical program, in the case where gas upstream end forms negative pressure, while gas and liquid can be rapidly sucked into Body.And the edge of back blades towards water inlet side is arranged to sharp bladed, sundries in sewage is sheared, effectively prevent blocking up Plug, and reduce resistance.The edge of back blades towards water outlet side is arranged to zigzag simultaneously, it is therefore an objective in accessory impeller with main lobe When taking turns high speed rotation, increase gas liquid interfacial area, makes more uniform, the reduction air pocket of gas-liquid agitation, mixing, inclined blade Generating plug-flow makes in main impeller intake tunnel main impeller central area become micro-positive pressure by negative pressure, not only provides one kind for main impeller Uniform gas-liquid mixture, while the performance of the high lift of water pump is obtained, the efficiency for improving generation air-bubble for water pump provides item Part.

Preferably, shear is additionally provided on the outlet conduit of the pump case, the shear includes a connecting tube, with And a pair of of shearing ring at the connecting tube both ends is set, the pair of shearing ring passes through the water outlet of flange Yu the pump case respectively Pipeline is attached.

Preferably, the inner surface of the pair of shearing ring is equipped with multiple second protrusions, and each second protrusion is More prismatic teeth.

In the technical program, by the way that shear is arranged on the outlet conduit of pump case, it is therefore an objective to using shearing ring to out There is no the larger bubble of dissolution to be cut in the water flowed out in waterpipe, is further crushed.Specifically by being sheared in a pair Cutting of multiple more prismatic teeth realizations to the bubble progress flowed through in water flow repeatedly is set on the inner surface of ring.A pair of of shearing simultaneously Ring is realized by flange and is detachably connected with the outlet conduit of pump case, it is therefore an objective to be cut to it by simply dismounting can be realized Cleaning, replacement and the quantitative increase and decrease of cutting apparatus, it is simple to operate.

Further preferably, it is additionally provided with a porous plate between the pair of shearing ring, equably divides on the porous plate Several recirculation holes are furnished with, each recirculation hole includes water inlet end and water outlet, and the water inlet end is along the water outlet stomidium Diameter gradually becomes smaller, at a gradually-reducing shape.

It is further preferred that the area of the water outlet is the outlet conduit inner hole section of the pump case on the porous plate 50-80%.

In the technical program, a porous plate is set between a pair of of shearing ring, while by the area at porous plate upper water-out end It is further limited with the outlet conduit inner hole section of pump case, it is therefore an objective to so that being passed through again after being sheared after a shearing ring Connecting tube region soluble is again introduced into connecting tube further after carrying out extruding segmentation using the recirculation hole being arranged on porous plate Mixing is flowed out after finally cutting again after a shearing ring, to realize repeatedly shearing, squeeze, mixing, greatly reduces bubble Size increases gas bubble degree.

In conclusion a kind of having the characteristics that for micro-nano bubble water generator provided by the utility model is following:

1, in the utility model, the gas inputted in blending space in air inlet pipe is cut repeatedly using mixing arrangement It cuts, stir, mix, generate more uniform bubble.The connection type for breaking through conventional main impeller and accessory impeller simultaneously, passes through Improvement to the connection type of main impeller and accessory impeller is realized on the basis of rotating synchronously under the drive of the drive, is realized Plug-flow effect, so that water-aspirator pressure and flow decline too fast problem caused by effectively alleviating because of air inlet, greatly improves production Angry soaked using effect.

2, in the utility model, conventional blade construction is broken through, the first protrusion is set on the lateral surface of primary blades, simultaneously First protrusion is arranged to one of multi-prism taper or blade-like.Main purpose is to utilize multi-prism taper or blade-like knot Structure, the water in main impeller high-speed rotation in primary blades runner quickly flow, further progress cutting, bubble crushing, and It is pressurized under the action of the centrifugal force, is quickly soluble in more micro-nano bubbles in water.

3, in the utility model, the structure of accessory impeller is improved, previous accessory impeller is efficiently solved and is fixed on driving On the extending shaft of axis, drive shaft is caused to be easy the problem of being wound by sundries.The back blades in accessory impeller inclination has been done simultaneously to set It sets, generates plug-flow effect into blending space when accessory impeller is rotated in this way, form negative pressure in gas upstream end, while can be fast Gas and liquid are sucked fastly.The edge of back blades towards water inlet side is further arranged to sharp bladed, to miscellaneous in sewage Object is sheared, and effectively prevent blocking, and reduce resistance.The edge of back blades towards water outlet side is arranged to sawtooth simultaneously Shape, it is therefore an objective to when accessory impeller is with main impeller high speed rotation, increase gas liquid interfacial area, make gas-liquid agitation, mixing more It is even, reduce air pocket.

4, in the utility model, shear further is set on the outlet conduit of pump case, it is therefore an objective to utilize shearing Ring cuts the larger bubble for not having dissolution in the water flowed out in outlet conduit, is further crushed.The water flow for flowing out it Pass sequentially through after being cut off after a shearing ring again through connecting tube region soluble, using the recirculation hole being arranged on porous plate into It is again introduced into connecting tube after row extruding segmentation and further mixes, flowed out after finally being cut again after a shearing ring.

5, in the utility model, the shear of setting is mainly clamped by annular flange, its a pair is made to cut off ring reality Now be detachably connected with the outlet conduit of pump case, in this way by simply dismounting can be realized cleaning to its shear, Replacement and quantitative increase and decrease, it is simple to operate.

6, the utility model structure is simple, can increase micro-nano number of bubbles, and bubble size is made to reach micron or nanometer Grade, and be stably dissolved in water, moreover it is possible to alleviate because air inlet causes water-aspirator pressure and flow to decline too fast problem, thus significantly Ground, which improves, generates micro-nano bubbles volume, improves the treatment effect to sewage.

Detailed description of the invention

Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, a kind of micro-nano air-bubble is sent out Above-mentioned characteristic, technical characteristic, advantage and its implementation of raw device are further described.

Fig. 1 is a kind of structural schematic diagram of micro-nano bubble water generator of the utility model；

Fig. 2 is the structural schematic diagram of main impeller in a kind of micro-nano bubble water generator of the utility model；

Fig. 3 is the structural schematic diagram of accessory impeller in a kind of micro-nano bubble water generator of the utility model；

Fig. 4 is the scheme of installation of back blades in Fig. 3.

Drawing reference numeral:

Pump case 1；Outlet conduit 11；；

Pump cover 2；Pilot hole 21；

Air inlet pipe 3；Air inlet adjustment valve 31；

Mixing arrangement 4；Main impeller 41；End plates 411；Preoral loop 412；Primary blades 413；First protrusion 4131；Accessory impeller 42；Outer ring 421；Back blades 422；Sharp bladed 4221；Zigzag 4222；Inner core 423；

Driving device 5；Drive shaft 51；Clamp nut 52；

Shear 6；Connecting tube 61；Shearing ring 62；Second protrusion 621；Flange 63；Porous plate 64；Recirculation hole 641.

Specific embodiment

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these Attached drawing obtains other embodiments.

To make simplified form, part relevant to the utility model is only schematically shown in each figure, they are not Represent its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand The component of energy, only symbolically depicts one of those, or only marked one of those.Herein, "one" is not only It indicates " only this ", can also indicate the situation of " more than one ".Meanwhile the solid arrow in attached drawing 1 indicates the stream of sewage Enter direction, and dotted arrow indicates the inflow direction of air.

In the embodiments of the present invention one, referring to shown in Fig. 1-4, a kind of micro-nano bubble water generator, specifically Include a pump case 1, a pump cover 2, and pump cover 2 and pump case 1 lid close after constitute a blending space, the blending space mainly into The sewage entered is mixed with air.According to this, to improve mixing efficiency, a mixing arrangement is further set in blending space 4, which specifically includes a main impeller 41 and an accessory impeller 42.Wherein, main impeller 41 is semi-open type structure, specifically Semi-open type structure main impeller 41 include end panels 411 and a preoral loop 412, and for connecting pin panel 411 and before Several primary blades 413 of choma 412.

In actual use, a pilot hole 21 is opened up on pump cover 2, and the pilot hole 21 is mainly used for preoral loop 412 It is arranged at pilot hole 21.The outer wall of specific preoral loop 412 and the hole wall progress clearance fit of pilot hole 21, and prosopyle The inner wall of ring 412 is attached with accessory impeller 42.Wherein, it is also provided with a driving device 5, is arranged on pump case 1, in this way Driving device 5 is attached after pump case 1 with the end plates 411 of main impeller 41 by a drive shaft 51, to guarantee to connect Intensity is connect, is further fixed i.e. on one end in drive shaft 51 through end plates 411 by a clamp nut 52 Can, as shown in Figure 1.In this way in the bonding strength for guaranteeing driving device 5 and main impeller 41, and can be under the driving of driving device 5 The rotation of main impeller 41 is driven by drive shaft 51, while driving accessory impeller 42 to be rotated by preoral loop 412, to avoid Main impeller 41 and accessory impeller 42 are arranged in the extended drive shaft 51 simultaneously, efficiently solve drive shaft 51 and are twined by sundries Around the problem of occur, alleviating causes water-aspirator pressure and flow to decline too fast problem because of air inlet, greatly improves and generates air-bubble Using effect.

Wherein, it should be noted that being the stability for guaranteeing mixed uniformity and structure, the setting of pilot hole 21 is existed The center position of pump cover 2, and the inflow of air is mainly by the way that in the outside of preoral loop 412, i.e. the outside of pump cover 2 is equipped with one It is sent into blending space under the push effect of accessory impeller 42 by the air inlet pipe 3 for inputting gas.Simultaneously for sewage and sky It is flowed into while gas, guarantees being sufficiently mixed for the two, the size less than accessory impeller 42 that the caliber of air inlet pipe 3 is arranged, and position In accessory impeller 42, the i.e. center position of the upstream end of pilot hole 21, as shown in Figure 1, in actual use further into One air inlet adjustment valve 31 is set on the upstream end of tracheae 3, is realized by air inlet adjustment valve 31 and is effectively controlled into air capacity System.Certainly the position and size of the position of pilot hole 21 and size and air inlet pipe 3 can be according to reality in other embodiments Demand, which is done, reasonably to be adjusted, not further in the application to be limited.

In the embodiments of the present invention two, referring to shown in Fig. 1,2, improve on the basis of the above embodiments, and The improvement is that: on the outer surface of primary blades 413, i.e., outer surface is upstream face when main impeller 41 rotates.It is specific to drive Moving axis 51 is located at the center position of primary blades 413, and it is first convex that several have been evenly distributed on the outer surface of primary blades 413 4131 are played, the first protrusion 4131 is in one of multi-prism taper or blade-like.In this way in main impeller 41 and 42 turns of accessory impeller It when dynamic, realizes while mixed to air and sewage, moreover it is possible to pass through the of the multi-prism taper that is arranged in primary blades 413 or blade-like The bubble of one 4131 pairs of generations of protrusion cut, bubble crushing, and is pressurized, is made more micro- under the action of the centrifugal force Nano bubble is quickly soluble in water.It should be noted that the quantity and arrangement mode of the first protrusion 4131 can be according to reality Setting, it is not further to be limited.

In the embodiments of the present invention three, referring to Fig. 3, shown in 4, improve on the basis of the above embodiments, and The improvement is that: the accessory impeller 42 being provided with includes an outer ring 421 and inner core 423, and for connecting 421 He of outer ring Several back blades 422 of inner core 423, several back blades 422 from inner core 423 around at distribute shape distribution.Wherein, preferably Inner core 423 and drive shaft 51 are coaxially set by ground.Main impeller 41 and accessory impeller 42 can also be made around same center in this way Axis is rotated, and guarantees its synchronism, can rapidly increase micro-nano number of bubbles.

It should be noted that the wherein setting of inner core 423, it is ensured that the air of input is under the promotion of back blades 422, energy It is enough rapidly to be inputted from the gap between adjacent back blades 422, it avoids occurring to flow backwards phenomenon.

In the embodiments of the present invention four, referring again to shown in Fig. 1, wherein the outer ring 421 and prosopyle of accessory impeller 42 There are many connection types between ring 412.It, preferably will be between the outer wall of outer ring 421 and the inner wall of preoral loop 412 in the application Using threaded connection, in this way between the outer wall of preoral loop 412 and the inner wall of pilot hole 21 in the case where clearance fit, main impeller 41 rotations are lower to drive preoral loop 412 to rotate, thus the direction for driving the rotation of accessory impeller 42, and rotating just with outer ring 421 and The screw thread tightening direction of 412 screw thread of preoral loop is identical, and then is effectively prevented from rotation for a long time and the showing of falling of accessory impeller 42 occurs As occurring.And the connection type of screw thread accessory impeller 42 can be dismounted at any time after to being cleared up in blending space, may be used also Clamp nut 52 and drive shaft 51 are attached with facilitating.Certainly in other embodiments, welding procedure progress can also be used Connection, it is only necessary to guarantee stable connection between the outer ring 421 of accessory impeller 42 and preoral loop 412.

In the embodiments of the present invention five, referring to Fig. 3, shown in 4, improve on the basis of the above embodiments, and It thes improvement is that: where the blade face of the back blades 422 of setting constitutes a slanted angle at being obliquely installed, and with horizontal plane, inclines The angle of oblique angle controls between 5 °~45 °.Wherein, the setting of inclined direction is set according to 42 direction of rotation of accessory impeller, Mainly to generate plug-flow effect into blending space, negative pressure is formed in gas upstream end, while gas can be rapidly sucked into And liquid.Certainly the angular dimension of specific slanted angle can be according to the size and actual demand of practical accessory impeller 42 Do further adjustment.

In actual use, it should be noted that further preferably the edge of back blades 422 towards water inlet side is arranged At sharp bladed 4221, sundries in sewage can be sheared in this way, effectively prevent blocking, and reduce resistance.And back blades 422 Towards water outlet side, i.e., it is arranged to zigzag 4222 backwards to the edge of sharp bladed 4221, it is main to utilize 4222 structure of zigzag Increase the contact area with gas-liquid mixed, increase the bubbles volume in sewage, improves the uniformity of air-liquid mixing.Certainly in reality The size of zigzag 4222, quantity etc. can be according to actual settings when processing, it is only necessary to meet its function.

In the embodiments of the present invention six, referring to shown in Fig. 1, improve on the basis of the above embodiments, and change It is into place: shear 6 is further set on the outlet conduit 11 of pump case 1, which includes a connecting tube 61, and a pair of of shearing ring 62 at 61 both ends of connecting tube is set, and a pair of of shearing ring 62, i.e. the both ends difference of shear 6 It is attached by flange 63 and the outlet conduit 11 of pump case 1.This ensure that the connection of shear 6 and outlet conduit 11 Intensity, while bubble in outlet conduit 11 is sheared again by shear 6.Wherein, either connecting tube 61 is still The diameter of a pair of of shearing ring 62 is configured all in accordance with the caliber of outlet conduit 11, it is only necessary to guarantee that the two carries out seamless connection and is It can.

It should be noted that specific shearing be multiple second protrusions 621 are set on the inner surface of a pair of of shearing ring 62, and Each second protrusion 621 is more prismatic teeth, in actual use, the tine length of more prismatic teeth do not answer it is too long, it is mainly biggish Bubble is typically all the surface for floating on water, thus, it is only required to be arranged on the inner surface of entire shearing ring 62.Specific setting Quantity being directly adjusted according to actual shearing ring 62.

In the embodiments of the present invention seven, referring again to shown in Fig. 1, improve on the basis of the above embodiments, And the improvement is that: a porous plate 64 further being connected by connecting tube 61 between a pair of of shearing ring 62, wherein porous Several recirculation holes 641 are evenly distributed on plate 64, each recirculation hole 641 includes water inlet end and water outlet, i.e., towards water flow One end of inflow is water inlet end, and one end of water flow outflow is water outlet, when actual setting by water inlet end along water outlet aperture gradually Become smaller, at a gradually-reducing shape.So that again through 61 region soluble of connecting tube after being sheared after a shearing ring 62, using more The recirculation hole 641 being arranged on orifice plate 64 be again introduced into connecting tube 61 after extruding segmentation further mixing, and finally passes through one It is flowed out after being cut again after shearing ring 62, increases the number of combinations of shearing ring 62 and porous plate and connecting tube, to realize multiple Shearing squeezes, mixing, greatly reduces bubble size, increases gas bubble degree.

Wherein, it should be noted that carrying out extruding work to the bubble in water by the recirculation hole 641 being arranged on porous plate 64 With, further by the gross area of the water outlet for the recirculation hole 641 being arranged on porous plate 64 be pump case 1 11 inner hole of outlet conduit The 50-80% in section, it is only necessary to which guarantee reaches the function.The final purpose of the utility model be by repeatedly shearing, squeezing, Mixing reaches reduction bubble size, increases gas bubble degree, and final air-bubble is discharged from outlet conduit 11.Certainly permit in condition Perhaps in the case where, multiple shears 6 can be set on outlet conduit 11.Particularly interval setting, or continuously set It sets according to actual needs, does not do in the application and limit one by one.

It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of micro-nano bubble water generator characterized by comprising

One pump case, a pump cover, the pump case and the pump cover constitute a blending space；

A pilot hole is provided on the pump cover；

One mixing arrangement, the mixing arrangement include a main impeller and an accessory impeller, and the main impeller is semi-open type structure, described The main impeller of semi-open type structure includes end panels and a preoral loop, and connects the several of the end plates and the preoral loop A primary blades；

The preoral loop is located at the pilot hole, and the hole wall clearance fit of the outer wall of the preoral loop and the pilot hole, The inner wall of the preoral loop is attached with the accessory impeller；

Further include a driving device, be arranged on the pump case, the driving device passes through a drive shaft and the end plates It is attached.

2. micro-nano bubble water generator according to claim 1, it is characterised in that:

Several the first protrusions are evenly distributed on the outer surface of the primary blades, first protrusion is in multi-prism taper or knife One of sheet.

3. micro-nano bubble water generator according to claim 1, it is characterised in that:

The accessory impeller includes an outer ring and an inner core, and several accessory lobes for connecting the outer ring and the inner core Piece, several described back blades are uniformly distributed at distributing shape around from the inner core, and the inner core and the drive shaft are same Axis setting.

4. micro-nano bubble water generator according to claim 3, it is characterised in that:

The inner wall of the outer wall of the outer ring and the preoral loop is attached using one of being threadedly coupled or weld mode.

5. micro-nano bubble water generator according to claim 3, it is characterised in that:

The blade face of the back blades is obliquely installed, and constitutes a slanted angle with horizontal plane, and the angle of the slanted angle is at 5 ° Between~45 °.

6. micro-nano bubble water generator according to claim 5, it is characterised in that:

One end margin of the back blades towards water inlet is arranged to sharp bladed, and the end margin for stating back blades towards water outlet is set It is set to zigzag.

7. micro-nano bubble water generator according to claim 1-6, it is characterised in that:

Shear is additionally provided on the outlet conduit of the pump case, the shear includes a connecting tube, and is arranged in institute A pair of of shearing ring at connecting tube both ends is stated, the outlet conduit that the pair of shearing ring passes through flange and the pump case respectively is connected It connects.

8. micro-nano bubble water generator according to claim 7, it is characterised in that:

The inner surface of the pair of shearing ring is equipped with multiple second protrusions, and each second protrusion is more prismatic teeth.

9. micro-nano bubble water generator according to claim 7, it is characterised in that:

It is additionally provided with a porous plate between the pair of shearing ring, several recirculation holes have been evenly distributed on the porous plate, often A recirculation hole includes water inlet end and water outlet, and the water inlet end gradually becomes smaller along the water outlet aperture, tapered at one Shape.

10. micro-nano bubble water generator according to claim 9, it is characterised in that:

The area of the water outlet is the 50-80% of the outlet conduit inner hole section of the pump case on the porous plate.