CN115007010B - High-lift gas-liquid mixing pump capable of adjusting flow - Google Patents
High-lift gas-liquid mixing pump capable of adjusting flow Download PDFInfo
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- CN115007010B CN115007010B CN202210671651.8A CN202210671651A CN115007010B CN 115007010 B CN115007010 B CN 115007010B CN 202210671651 A CN202210671651 A CN 202210671651A CN 115007010 B CN115007010 B CN 115007010B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/60—Pump mixers, i.e. mixing within a pump
- B01F25/64—Pump mixers, i.e. mixing within a pump of the centrifugal-pump type, i.e. turbo-mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a high-lift gas-liquid mixing pump with adjustable flow, which comprises an impeller, a pump body and a main shaft, wherein the impeller is arranged at one end of the main shaft and is positioned in the pump body; the impeller is provided with at least two runners with impeller outlet mounting angles, and the difference value of the two impeller outlet mounting angles is more than fifty degrees. The impeller is a cross impeller or a hierarchical impeller: the crossed impeller is provided with liquid flow channels and gas-liquid flow channels which are alternately distributed on the same cross section of the impeller axis, the setting angle of the outlet of the working face of the liquid flow channel is smaller than that of the outlet of the working face of the gas-liquid flow channel, and an exchange hole is arranged between the back surface of the liquid flow channel and the working face of the gas-liquid flow channel; the hierarchical impeller has first runner and second runner that is located the adjacent cross section of impeller axis, and the pump body includes spiral case and inducer, and first runner is closer to inducer than the second runner, and inducer has the swirl structure.
Description
Technical Field
The invention relates to the technical field of gas-liquid mixing pumps, in particular to a high-lift gas-liquid mixing pump with adjustable flow.
Background
The gas-liquid mixing pump is mainly used for fully stirring and mixing gas and liquid and pressurizing and conveying, and main performance parameters include a gas-liquid ratio range, cavitation allowance, use temperature, flow lift and the like, wherein the range change of the gas-liquid mixing ratio and the difference of gas-liquid mixing distribution states of initial suction positions have adverse effects on stable work of the impeller.
The impeller of the prior art generally continues to adopt the traditional centrifugal pump impeller configuration, the gas-liquid mixing average value of the design working condition is used as the conveying medium parameter to approximately determine the impeller specific rotation speed, and then only the wall thickness, the surface roughness and the like of the impeller are adjusted to carry out final shaping, so that when the gas-liquid mixing ratio deviates from the design value more, the placing angle of the impeller blades cannot do work with the optimal parameter, the lift drops quickly, the working efficiency is greatly influenced, the gas-liquid mixing medium is pumped and thrown out in the impeller at the same time, the kinetic energy is consistent, the outlet speed is consistent, the gas-liquid speed is also consistent, and therefore, the uniformity secondary lifting of the gas-liquid mixture in the conveying pump is not obvious, and if the structure of the traditional centrifugal pump is continuously used for carrying out gas-liquid mixing conveying in the prior art, the lift parameter and the gas-liquid mixing quality are not fully guaranteed.
Disclosure of Invention
The invention aims to provide a high-lift gas-liquid mixing pump with adjustable flow so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides an adjustable flow high-lift gas-liquid mixing pump, the mixing pump includes impeller, pump body, main shaft, and the impeller is installed in the one end of main shaft, and the impeller is located the pump body; the impeller is provided with at least two runners with impeller outlet mounting angles, and the difference value of the two impeller outlet mounting angles is more than fifty degrees.
The two types of medium can respectively obtain pressurization power by a more proper working surface, and obtain stable gas phase, liquid phase and mixed phase pressure at the impeller outlet, so that the fluctuation of pump outlet pressure is reduced, the gas and the liquid are mutually matched, the mutual stirring and mixing force can be applied more easily, and bubble clusters below micron level are formed in the liquid, and meanwhile, the mixing and stable pressurization of the gas-liquid mixing pump are ensured.
As a further design scheme: the impeller is a crossed impeller, the crossed impeller is provided with liquid flow channels and gas-liquid flow channels which are alternately distributed and positioned on the same cross section of the impeller axis, the working surface of the liquid flow channel is a low-angle working surface, the working surface of the gas-liquid flow channel is a high-angle working surface, a communicated exchange hole is arranged between the back surface of the liquid flow channel and the high-angle working surface, the outlet setting angle of the low-angle working surface is lower than the outlet setting angle of the high-angle working surface, and the liquid flow channel occupies the inlet area of all impeller hubs.
The centrifugal impeller is characterized in that alternate flow channels are arranged on the surface of a centrifugal impeller on the cross section of one shaft, the liquid flow channel with a low-angle working surface is small in outlet setting angle and suitable for conveying media with large liquid components, the gas-liquid flow channel with a large outlet setting angle is used for increasing media with more gas components, the large outlet setting angle can apply more work to the media under the limited radial conveying distance to enable the media to have larger kinetic energy at the outlet, specific acting comparison can analyze by taking a centrifugal impeller speed triangle as a tool, when the impeller is carried out in the initial stage of mixing of the media, the media firstly fully enter the liquid flow channel, but due to rotation of the impeller, the media are tightly attached to the working surface of the liquid flow channel, due to rotation inertia, pure liquid components with small bubble content are accumulated near the surface of the low-angle working surface and advance along the low-angle working surface, and mixed components with more bubble content enter the gas-liquid flow channel from the exchange holes, the power transmitted by the impeller is received on the high-angle working surface to promote the kinetic energy and pressure of the media, the radial positions of the media and the two media are thrown out of the gas-liquid flow channel are identical but different in absolute speed directions, and the absolute speed directions of the media are different, and the absolute speed mixture has better uniform effect of the mixture and the mixture of the gas-liquid is better in the direction and the mixture of the pure liquid mixture.
Further, a flow blocking area is arranged between the back surface of the crossed impeller and the high-angle working surface, the flow blocking area is filled with a liquid flow channel and a flow passing area of the gas-liquid flow channel at the radial outlet position of the crossed impeller, and the flow passing area of the liquid flow channel is gradually reduced.
The flow blocking area is of a solid structure or a radial outward semi-hollow structure, and cannot be an overflow part of the liquid flow channel and the gas-liquid flow channel, the flow channel width of the liquid flow channel is basically unchanged, the overflow area is also related to the height of the flow channel enclosed by the front cover plate and the rear cover plate of the impeller, the overflow area of the liquid flow channel is constructed to be gradually reduced along the overflow path, part of gas-liquid medium can be forced to enter the gas-liquid flow channel at the exchange hole position, the two mediums are inevitably split, one stream with high bubble content is selected to be extruded into the gas-liquid flow channel to receive higher working power, and necessary impact mixing is formed at the outlet of the crossed impeller.
As another further design scheme: the impeller is a hierarchical impeller, the hierarchical impeller is provided with a first runner and a second runner which are positioned on the adjacent cross sections of the impeller axis, the pump body comprises a volute and an inlet section, the first runner is closer to the inlet section than the second runner, the first runner inlet is a first inlet, the second runner inlet is a second inlet, the first inlet radially surrounds the second inlet, the inlet section is provided with a rotational flow structure, and the placement angle of a blade outlet in the first runner is smaller than that of a blade outlet in the second runner.
The hierarchical impeller acts on the medium entering the hierarchical impeller as two layers of runners respectively, the inlet section whirls the medium entering the pump body to distribute pure liquid on the outer layer, the gas-liquid mixture is distributed in the center position, the gas-liquid mixture enters the second runner and is thrown by the blades with larger outlet setting angles, so that higher single-stage power is obtained, the pure liquid enters the first runner and is thrown by the centrifugal blades with the traditional small outlet setting angles to act, and the pure liquid does not enter the second runner to prevent the blades with large setting angles from throwing the pure liquid, so that the driving power required by the impeller is rapidly increased.
Further, the cyclone structure is a cyclone, the cyclone is rotatably supported by a bracket extending from the inner wall of the inlet section, and the cyclone is a helical blade.
The spiral blade can actively rotate, can passively rotate or even does not rotate, and can be endowed with a certain circumferential speed as long as a medium entering the pump body passes through the cyclone, pure liquid is distributed on the outer layer of the inlet section and advances to the first inlet to enter the first flow channel.
Further, the cyclone comprises a first spiral blade, a second spiral blade and reverse transmission, the first spiral blade and the second spiral blade are respectively installed in the inlet section in a rotary supporting mode, the first spiral blade and the second spiral blade She Zhouxian are overlapped, and one ends, close to each other, of the rotary shafts are connected through the reverse transmission.
The two spiral blades rotate in different rotation directions, after the first spiral blade has separated the medium into two paths which respectively enter the first flow channel and the second flow channel, the reverse rotation of the second spiral blade eliminates the circumferential velocity of the medium, so that the medium enters the two flow channels only has axial velocity, and the single-stage functional capability of the blade is prevented from being seriously influenced by the triangular deformation of the inlet velocity of the blade.
Further, the reverse transmission comprises a first internal gear, a second internal gear, a first matching wheel, a second matching wheel and a matching wheel center frame, wherein the first internal gear is fixed at the end part of a rotating shaft of the first spiral blade, the second internal gear is fixed at the end part of the rotating shaft of the second spiral blade, the first internal gear and the second internal gear are arranged face to face, the first matching wheel is provided with two external gears distributed on the rotating shaft, one of the two external gears of the first matching wheel is meshed with the first internal gear, the second matching wheel is provided with two external gears distributed on the rotating shaft, one of the two external gears of the second matching wheel is meshed with the second internal gear, the remaining external gears of the first matching wheel and the second matching wheel are meshed with each other, and the rotating shafts of the first matching wheel and the second matching wheel are rotatably supported by the matching wheel center frame and keep the center distance.
Three transmission positions are arranged on the transmission path from the first screw blade rotating shaft to the second screw She Zhuaizhou, the rotation direction is not changed by the engagement of two internal and external gears, the rotation direction is changed by the engagement of one external and external gear, and the opposite rotation moments of the first screw blade and the second screw blade are kept.
Further, the hierarchical impeller further comprises a detachable annular nozzle arranged at the radial outlet, and the radial dimension of the side, connected with the second flow passage, of the annular nozzle is larger than the radial dimension of the side, connected with the first flow passage, of the annular nozzle.
The ring mouth is detachable and replaceable, can be used as an extension section of the first flow channel and the second flow channel, continuously works for the medium in the two flow channels, and the outlet setting angle can be further and selectively adjusted, and the outlet setting angle of the flow channel where the gas-liquid mixture is positioned is mainly adjusted, so that the outlet setting angle of the pure liquid medium is not recommended to be adjusted to a large extent, because the volute needs to adapt to the outflow angle of the high-density medium, and the phenomenon that the liquid impacts the wall surface of the volute due to the inadaptation of the angle is prevented.
Further, two outlet setting angles arranged on the impeller are respectively a backward tilting setting angle and a forward tilting setting angle.
The two blade placing angles are respectively backward inclined and forward inclined at the outlet position, the left backward inclined blade is used for conveying liquid, the right forward inclined blade gives more single-stage power to the gas-liquid mixture without worrying about overload of main shaft power, the absolute speed of the medium outlet of the forward inclined blade is faster and different from the liquid outlet speed angle of the adjacent backward inclined blade, and two types of mediums are fully mixed at the outlet position in a cross mode and flow out from the outlet of the pump body.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, two independent flow channels are constructed at the impeller positions to pointedly convey gas-liquid mixed media which are not dispersed, components with more water content enter the flow channels with small outlet setting angles, work doing efficiency is ensured, overpower is prevented, components with more gas content enter the flow channels with large outlet setting angles, the media in the flow channels can be acted with more power, and because the gas content is more, the rapid rising of the impeller power is not needed, the two flow channels respectively do work, the two flow channels are mutually sheared in different outlet speed directions, the gas components are dispersed into the liquid components with more kinetic energy to form a running gas-liquid mixed phase, the separated work doing flow channels can respectively keep higher conversion efficiency with more proper working surface shapes, stable high lift is obtained, and the flow rate is adjusted by entering resistance through an inlet section or changing the rotation speed of a main shaft.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of an impeller according to a first embodiment of the present invention;
fig. 2 is view a of fig. 1;
FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 4 is a schematic view of an axial structure of a second impeller according to an embodiment of the present invention;
FIG. 5 is a schematic view of a two-layer blade shape of a two-impeller cross-sectional structure in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of a cyclone position-dependent structure in accordance with a second embodiment of the present invention;
FIG. 7 is a schematic diagram of a second embodiment of the present invention;
in the figure: 1-crossed impellers, 11-liquid flow passages, 12-gas-liquid flow passages, 13-exchange holes, 14-flow blocking areas, 101-low-angle working surfaces, 102-back surfaces, 103-high-angle working surfaces, 2-level impellers, 21-first flow passages, 211-first inlets, 22-second flow passages, 221-second inlets, 23-annular mouths, 3-pump bodies, 31-volutes, 32-inlet sections, 4-cyclones, 41-first spiral blades, 42-second spiral blades, 43-reverse transmission, 431-first internal gears, 432-second internal gears, 433-first matched wheels, 434-second matched wheels, 435-matched wheel center frames and 5-main shafts.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The first embodiment is as follows: referring to fig. 1-2, the present invention provides the following technical solutions:
the utility model provides an adjustable flow high-lift gas-liquid mixing pump, the mixing pump includes impeller, pump body 3, main shaft 5, and the impeller is installed in the one end of main shaft 5, and the impeller is located in pump body 3;
the impeller is provided with at least two runners with impeller outlet mounting angles, and the difference value of the two impeller outlet mounting angles is more than fifty degrees.
The two types of medium can respectively obtain pressurization power by a more proper working surface, and obtain stable gas phase, liquid phase and mixed phase pressure at the impeller outlet, so that the fluctuation of pump outlet pressure is reduced, the gas and the liquid are mutually matched, the mutual stirring and mixing force can be applied more easily, and bubble clusters below micron level are formed in the liquid, and meanwhile, the mixing and stable pressurization of the gas-liquid mixing pump are ensured.
The impeller is a crossed impeller 1, the crossed impeller 1 is provided with liquid flow channels 11 and gas-liquid flow channels 12 which are alternately distributed and positioned on the same cross section of the impeller axis, the working surface of the liquid flow channels 11 is a low-angle working surface 101, the working surface of the gas-liquid flow channels 12 is a high-angle working surface 103, a communicated exchange hole 13 is arranged between the back surface 102 of the liquid flow channels 11 and the high-angle working surface 103, the outlet setting angle of the low-angle working surface 101 is lower than the outlet setting angle of the high-angle working surface 103, and the liquid flow channels 11 occupy the whole inlet area of the impeller hub.
As shown in fig. 1 and 2, alternate flow channels are arranged on the centrifugal impeller surface on one axial cross section, the liquid flow channel 11 with a low-angle working surface 101 is small in outlet setting angle, and is suitable for conveying media with large liquid components, the gas-liquid flow channel 12 with a large outlet setting angle is used for increasing media with more gas components, the large outlet setting angle can apply more work to the media under a limited radial conveying distance to enable the media to have more kinetic energy at an outlet, specific acting comparison can be carried out by taking a centrifugal impeller speed triangle as a tool, when the impeller is carried out in the initial stage of mixing media, the media firstly fully enter the liquid flow channel 11, but due to rotation of the impeller, the media are tightly attached to the working surface of the liquid flow channel 11, due to rotation inertia, pure liquid components with small bubble content are accumulated near the surface of the low-angle working surface 101 and advance along the low-angle working surface 101, and mixed components with more bubble content enter the gas-liquid flow channel from the exchange hole 13, the power transmitted by the impeller is increased by itself and the pressure, the absolute media thrown out from the gas-liquid flow channel 12 and the liquid flow channel 11 can be used as tools, and the absolute media can have different radial positions, and the two gas-liquid flow channels have different directions and different absolute directions, and better uniform gas-liquid mixing effects and different gas-liquid phases can be mixed and have better equal to air-liquid directions.
The cross impeller 1 is provided with a flow blocking area 14 between the back surface 102 and the high-angle working surface 103, the flow blocking area 14 is filled with a flow passing area of the liquid flow channel 11 and the gas-liquid flow channel 12 at the radial outlet position of the cross impeller 1, and the flow passing area of the liquid flow channel 11 is gradually reduced.
As shown in fig. 1, the flow blocking area 14 is a solid structure or a radial outward semi-hollow structure, and cannot be an overflow portion of the liquid flow channel 11 and the gas-liquid flow channel 12, the overflow area of the liquid flow channel 11 is shown as the flow channel width is basically unchanged in the view of fig. 1, the overflow area is also related to the flow channel height enclosed by the front cover plate and the rear cover plate of the impeller, the overflow area of the liquid flow channel 11 is gradually reduced along the overflow path, part of the gas-liquid medium can be forced to enter the gas-liquid flow channel 12 at the position of the exchange hole 14, so that two mediums are inevitably split, one stream with high bubble content is selected to be extruded into the gas-liquid flow channel 12 to receive larger working power, and necessary impact mixing is formed at the outlet of the crossed impeller 1.
The two outlet setting angles arranged on the impeller are respectively a backward tilting setting angle and a forward tilting setting angle.
As shown in fig. 5, the two blade setting angles are respectively backward inclined and forward inclined at the outlet position, the left backward inclined blade is used for liquid conveying, the right forward inclined blade is used for imparting more single-stage power to the gas-liquid mixture without worrying about overload of the main shaft 5, the absolute speed of the medium outlet of the forward inclined blade is faster and different from the liquid outlet speed angle of the adjacent backward inclined blade, and two mediums are fully mixed and discharged from the outlet of the pump body 3 at the outlet position.
The second embodiment is as follows: referring to fig. 3-7, the present invention provides the following technical solutions:
compared with the first specific embodiment, the impeller structure and the pump body front section leading-in structure are different, the flow-adjustable high-lift gas-liquid mixing pump comprises an impeller, a pump body 3 and a main shaft 5, wherein the impeller is arranged at one end of the main shaft 5, and the impeller is positioned in the pump body 3; the impeller is provided with at least two runners with impeller outlet mounting angles, and the difference value of the two impeller outlet mounting angles is more than fifty degrees.
The impeller is a hierarchical impeller 2, the hierarchical impeller 2 is provided with a first runner 21 and a second runner 22 which are positioned on the adjacent cross sections of the impeller axis, the pump body 3 comprises a volute 31 and an inlet section 32, the first runner 21 is closer to the inlet section 32 than the second runner 22, the inlet of the first runner 21 is a first inlet 211, the inlet of the second runner 22 is a second inlet 221, the first inlet 211 radially surrounds the second inlet 221, the inlet section 32 is provided with a rotational flow structure,
the vane outlet placement angle in the first flow passage 21 is smaller than the vane outlet placement angle of the second flow passage 22.
As shown in fig. 3 to 5, the hierarchical impeller 2 is respectively used as two layers of runners to do work on the medium entering the hierarchical impeller, the inlet section 32 is used for swirling the medium entering the pump body 3 to distribute pure liquid on the outer layer, the gas-liquid mixture is distributed in the center position, the gas-liquid mixture enters the second runner 22 and is thrown by the blades with larger outlet placing angles, so that larger single-stage power is obtained, the pure liquid enters the first runner 21 and is thrown by the centrifugal blades with the conventional small outlet placing angles to do work, and the pure liquid does not enter the second runner 22 to prevent the blades with large placing angles from throwing the pure liquid so as to lead the driving power required by the impeller to rise sharply.
The cyclone structure is a cyclone 4, the cyclone 4 is rotatably supported by a bracket extending from the inner wall of the inlet section 32, and the cyclone 4 is a helical blade.
The spiral blade can rotate actively, or passively, or even not, so long as the medium entering the pump body passes through the cyclone 4, a certain circumferential velocity can be imparted, pure liquid is distributed to the outer layer of the inlet section 32, and advances to the first inlet 211 to enter the first flow channel 21.
The cyclone 4 comprises a first screw blade 41, a second screw blade 42 and a reverse transmission 43, wherein the first screw blade 41 and the second screw blade 42 are respectively installed in the inlet section 32 in a rotary supporting way, the axes of the first screw blade 41 and the second screw blade 42 are coincident, and one ends of the rotary shafts close to each other are connected through the reverse transmission 43.
As shown in fig. 6, the two spiral blades rotate in different rotation directions, after the first spiral blade 41 has separated the medium into two paths of the first flow channel 21 and the second flow channel 22, the reverse rotation of the second spiral blade 42 eliminates the circumferential velocity of the medium, so that the medium enters the two flow channels only with the axial velocity, and the deformation of the triangle of the inlet velocity of the blade is prevented from seriously affecting the single-stage functioning capability of the blade.
The reverse gear 43 includes a first internal gear 431, a second internal gear 432, a first mating wheel 433, a second mating wheel 434, and a mating wheel center frame 435, the first internal gear 431 is fixed at the rotating shaft end of the first screw blade 41, the second internal gear 432 is fixed at the rotating shaft end of the second screw blade 42, the first internal gear 431 and the second internal gear 432 are disposed face to face, the first mating wheel 433 has two external gears distributed on the rotating shaft, one of the two external gears of the first mating wheel 433 meshes with the first internal gear 431, the second mating wheel 434 has two external gears distributed on the rotating shaft, one of the two external gears of the second mating wheel 434 meshes with the second internal gear 432, the first mating wheel 433 and the second mating wheel 434 are respectively engaged with the remaining external gears, and the rotating shafts of the first mating wheel 433 and the second mating wheel 434 are rotatably supported by the mating wheel center frame 435 and kept at a center distance.
As shown in fig. 7, three transmission positions are totally arranged on the transmission path from the rotating shaft of the first screw blade 41 to the rotating shaft of the second screw blade 42, the rotation direction is not changed by the meshing of two internal and external gears, the rotation direction is changed by the meshing of one external and external gear, and the rotation directions of the first screw blade 41 and the second screw blade 42 are kept opposite in time.
The hierarchical impeller 2 further comprises a removable annular mouth 23 arranged at the radial outlet, the radial dimension of the side of the mouth 23 connected to the second flow channel 22 being greater than the radial dimension of the side connected to the first flow channel 21.
As shown in fig. 4, the ring mouth 23 is removable and replaceable, and can be used as an extension section of the first flow channel 21 and the second flow channel 22 to continuously apply work to the medium in the two flow channels, and the outlet setting angle can be further selectively adjusted, and it should be noted that the outlet setting angle of the flow channel where the gas-liquid mixture is located is mainly adjusted, and the outlet setting angle of the pure liquid medium is not recommended to be adjusted to a large extent, because the volute 31 needs to adapt to the outflow angle of the liquid, which is a high-density medium, so that the phenomenon that the liquid hits the wall surface of the volute due to the inadaptation of the angle is prevented.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides an adjustable flow high-lift gas-liquid mixing pump which characterized in that: the mixing pump comprises an impeller, a pump body (3) and a main shaft (5), wherein the impeller is arranged at one end of the main shaft (5) and is positioned in the pump body (3);
the impeller is provided with at least two runners with impeller outlet mounting angles, and the difference value of the two impeller outlet mounting angles is more than fifty degrees;
the impeller is a crossed impeller (1), the crossed impeller (1) is provided with liquid runners (11) and gas-liquid runners (12) which are alternately distributed and positioned on the same cross section of the impeller axis, the working surface of the liquid runners (11) is a low-angle working surface (101), the working surface of the gas-liquid runners (12) is a high-angle working surface (103), a communicated exchange hole (13) is arranged between the back surface (102) of the liquid runners (11) and the high-angle working surface (103), the outlet placement angle of the low-angle working surface (101) is lower than the outlet placement angle of the high-angle working surface (103), and the liquid runners (11) occupy the inlet area of all impeller hubs.
2. The adjustable flow high-lift gas-liquid mixing pump of claim 1, wherein: the cross impeller (1) is provided with a flow blocking area (14) between the back surface (102) and the high-angle working surface (103), the flow blocking area (14) is filled with a liquid flow channel (11) and a flow passing area of the gas-liquid flow channel (12) at the radial outlet position of the cross impeller (1), and the flow passing area of the liquid flow channel (11) is a gradually reduced flow passing area.
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| CN202210671651.8A CN115007010B (en) | 2022-06-14 | 2022-06-14 | High-lift gas-liquid mixing pump capable of adjusting flow |
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| CN202210671651.8A CN115007010B (en) | 2022-06-14 | 2022-06-14 | High-lift gas-liquid mixing pump capable of adjusting flow |
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| CN115007010A CN115007010A (en) | 2022-09-06 |
| CN115007010B true CN115007010B (en) | 2023-08-08 |
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| CN118066122B (en) * | 2024-04-19 | 2024-06-21 | 杭州新亚低温科技有限公司 | Improved generation high-lift cryogenic pump cavitation prevention impeller and performance verification device |
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