CN114278576A - Integrated impeller deposit prevention water pump - Google Patents
Integrated impeller deposit prevention water pump Download PDFInfo
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- CN114278576A CN114278576A CN202111204533.8A CN202111204533A CN114278576A CN 114278576 A CN114278576 A CN 114278576A CN 202111204533 A CN202111204533 A CN 202111204533A CN 114278576 A CN114278576 A CN 114278576A
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- water pump
- impeller
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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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an integrated water pump for preventing impeller deposition, which comprises a water pump outer barrel, a stator assembly, a rotor assembly and a diversion shell, wherein the stator assembly is arranged on the water pump outer barrel; the stator assembly is hermetically arranged in the water pump outer cylinder, the rotor assembly is rotationally arranged in the stator assembly, the water pump outer cylinder and the outer wall of the stator assembly enclose to form a first space, and the outer wall of the rotor assembly and the inner wall of the stator assembly enclose to form a second space; an impeller connected with the rotor assembly is arranged in the guide shell, an installation cavity matched with the impeller is arranged in the guide shell, a plurality of vortex grooves are arranged on the peripheral wall of the installation cavity, and the vortex grooves are communicated with the front end and the rear end of the guide shell; a small impeller is arranged in the impeller and is rotationally arranged on the rotor component; a water permeable hole matched with the rotor assembly is formed in the diversion shell and is communicated with the front end and the rear end of the diversion shell; a water inlet end of the water pump, the vortex groove, the first space and a water outlet end of the water pump form a first flow channel; the water inlet end of the water pump, the water permeable hole, the second space and the water outlet end of the water pump form a second flow passage.
Description
Technical Field
The utility model relates to a canned motor pump technical field especially relates to an integrative prevent sedimentary water pump of impeller.
Background
The pump body of the canned motor pump is connected with the motor, and the rotor of the motor and the impeller of the pump body are fixed on the same rotating shaft. Although there is the cooling runner that realizes the shield pump motor cooling among the prior art, the cooling runner nevertheless sets up in the motor outside, and the cooling effect is not good, and the coolant liquid of shield pump sets up alone with the fluid that needs the pumping moreover, is unfavorable for the water pump integration, has increased the water pump cost.
For example, in chinese patent document, patent No. CN2016214699800 discloses a utility model issued in 2017, 8/8, the application discloses a water pump with an inner flow channel, which includes a pump body and a motor, the left end of the motor is fixed with an end cap, the end cap is fixedly connected with the pump body, a cavity is formed between the pump body and the inside of the end cap, a flow channel for water to flow is provided on the inner side wall of the cavity, and the flow channel is communicated with the cavity. The disadvantages are that: the runner sets up on the pump body and end cover, can only accomplish the cooling of motor front end, and the holistic cooling efficiency of motor is poor.
Disclosure of Invention
Based on the defects in the prior art, the invention provides an integrated water pump for preventing impeller deposition, which can provide a first flow passage corresponding to a motor stator and a second flow passage corresponding to a space between the motor stator and a motor rotor, realize integrated heat dissipation of a motor through the first flow passage and the second flow passage, does not need to arrange a cooling flow passage outside the motor, and has high cooling efficiency.
The invention also aims to realize the deposition of impurities in the water pump and prevent the impurities in the rotor flow passage from being blocked.
In order to achieve the above object, the present invention adopts the following technical solutions.
An integrated water pump for preventing impeller deposition is characterized by comprising a water pump outer cylinder, a stator component, a rotor component and a diversion shell;
the stator assembly is arranged in the water pump outer cylinder in a sealing mode, the rotor assembly is arranged in the stator assembly in a rotating mode, the water pump outer cylinder and the outer wall of the stator assembly enclose to form a first space, and the outer wall of the rotor assembly and the inner wall of the stator assembly enclose to form a second space;
an impeller connected with the rotor assembly is arranged in the guide shell, an installation cavity matched with the impeller is arranged in the guide shell, a plurality of vortex grooves are arranged on the peripheral wall of the installation cavity, and the vortex grooves are communicated with the front end and the rear end of the guide shell;
a small impeller is arranged in the impeller and is rotationally arranged on the rotor component;
a water permeable hole matched with the rotor assembly is arranged in the diversion shell and is communicated with the front end and the rear end of the diversion shell;
a water inlet end of the water pump, the vortex groove, the first space and a water outlet end of the water pump form a first flow channel;
the water inlet end of the water pump, the water permeable hole, the second space and the water outlet end of the water pump form a second flow passage.
The heat dissipation flow channel of the motor is integrated into the water pump, the first flow channel can introduce the water inlet of the water pump into the first space from the vortex groove to finish the heat dissipation outside the stator, the second flow channel can introduce the water body in the water pump into the second space through the water permeable hole to finish the heat dissipation between the stator and the rotor, the heat dissipation efficiency is high, the arrangement of the first flow channel and the second flow channel can meet the requirement of conveying fluid, and can also ensure the cooling of the stator assembly, the rotor assembly and the bearing, the cooling mode that cooling liquid needs to be independently arranged for cooling in the prior art is improved, and the normal pumping of the fluid can also be ensured, so the motor has the characteristics of simple structure, convenience in use and good economic benefit; the diversion shell is arranged to complete diversion of the water body, the water permeable holes and the vortex groove respectively correspond to the second flow channel and the first flow channel, sufficient cooling of the water body of the two groups of flow channels is guaranteed, and cooling efficiency is guaranteed; the setting of little impeller can provide the rivers direction of water inlet, makes things convenient for the distribution of water in the impeller, can assist when the water yield to provide the homogeneity that the vortex was used for improving rivers.
Preferably, the rotor assembly comprises a rotating shaft and a rotor on the rotating shaft, and an insulating layer is arranged on the outer side of the rotor;
one end of the outer cylinder of the water pump, which is close to the impeller, is provided with a fixed seat arranged at the outer end of the stator component;
the fixing seat is connected with the rotating shaft through a bearing, a water passing groove is formed in the inner peripheral side of the bearing, and a water diversion groove is formed in the end face of the bearing.
The water passing groove completes radial water passing and serves as a channel to further ensure the water passing capacity of the second flow channel, so that the cooling performance of the second flow channel is ensured, the heat dissipation of the bearing position can be completed, and the heat dissipation capacity of the motor is improved; the bearing rotates with the pivot together, and the setting of distributive channel can make things convenient for the water diffusion, can follow the water channel fast dispersion to the second space or with the water in the second space extract the water channel fast when the bearing rotates, can form the negative pressure moreover, is favorable to the water flow heat dissipation in the second runner.
Preferably, the rear side of the guide shell is provided with a flow blocking surface matched with the vortex groove;
a plurality of guide plates are arranged on the peripheral wall of the mounting cavity;
the guide plates are arranged in a circumferential array around the axis of the installation cavity;
one end of the guide plate, facing the side of the installation cavity, is provided with a guide surface which is eccentrically arranged with the installation cavity; a downstream surface is arranged on one side of the other end of the guide plate, which is back to the mounting cavity; a vortex groove is formed between the flow guide surface and the downstream surface on the adjacent flow guide plate;
the flow guide surface is tangent to the peripheral wall of the installation cavity.
A vortex groove is formed between the guide plates, the structural shape of the vortex groove is stable, flow gathering is realized through the guide surfaces, the downstream surface accelerates the outflow of the water body, when the impeller rotates, the water body is ejected from the vortex groove along the tangential direction of the guide shell, the impact on the outer cylinder of the water pump is small, and the sealing property and the service life of the outer cylinder of the water pump can be ensured; the water flowing out of the vortex groove can strike the flow blocking surface and then flow, vortex is formed at the position of the flow blocking surface, and the heat dissipation effect is improved.
As preferred, the blower inlet casing is provided with the bulge loop towards one side of fixing base, and the outside of bulge loop and the integrative setting of one end that keeps off the face of flowing, and the fixing base is equipped with the spacing ring towards one side of blower inlet casing, and the inboard overlap joint of the outside of spacing ring and bulge loop is equipped with towards the bellied annular rib of fixing base on the hole of permeating water, is equipped with the shaft shoulder portion of cooperation annular rib on the fixing base, and the shaft shoulder portion is equipped with the round table face of caving in towards the one end of blower inlet casing. Annular rib, shaft shoulder, bulge loop and spacing ring combination form annular cavity, and impurity can gather together in the annular cavity through the round platform face, is difficult for flowing out after gathering together, and annular cavity can hold second runner impurity, guarantees the unblocked nature of second runner, the life of extension water pump.
Preferably, one end of the downstream surface, which is far away from the bottom surface of the mounting cavity, is provided with a water retaining strip, the outer end of the bottom of the vortex groove is provided with a flow guide inclined surface which is inclined towards the bottom surface of the mounting cavity, and the water retaining strip is provided with a matching inclined surface which is matched with the flow guide inclined surface.
Because the setting on water conservancy diversion inclined plane and cooperation inclined plane, the slope direction passageway to the installation cavity outside has been formed, when the water flows along water conservancy diversion shell tangential direction from the vortex groove, because setting up of slope direction passageway makes the water can form the slope on the tangent plane of water conservancy diversion shell when penetrating, realize the slope collision of water and fender stream face, change the vortex that forms the convolution, thereby be favorable to the water distribution to flow to first space, avoid appearing laminar cooling gradient, improve the cooling efficiency that first space corresponds the stator.
Preferably, the front end of the wheel is provided with a step part matched with the small impeller, one end of the rotating shaft matched with the impeller is provided with a locking thread, the locking thread is provided with a locking nut, the outer end of the locking thread is provided with the step part matched with the small impeller, the locking thread is also provided with a supporting pad matched with the small impeller, and the front end of the small impeller is provided with a limiting nut; the supporting pad is connected with the locking thread through threads. The small impeller can rotate on the rotating shaft to achieve the effect of flow equalization, the supporting pad is in threaded connection with the locking threads, and a double-nut anti-loosening structure is formed by matching with the locking nut, so that the reliability of fixing the impeller can be improved; the supporting pad can support the small impeller, so that the small impeller is prevented from rotating excessively, and the service life of the small impeller is prolonged.
Preferably, the supporting pad is made of wear-resistant high polymer materials, and one side of the supporting pad, facing the small impeller, is provided with supporting grains which are arranged in a concentric circle mode. When rivers are more urgent or quality of water is relatively poor, the little leaflet wheel can play the effect of flow equalizing, and the little leaflet wheel receives the rivers pressure effect and probably takes place the drunkenness, and the supporting pad forms elastic support through supporting the line, forms the reinforcement to the little leaflet wheel, improves the reliability of structure.
Preferably, the stator assembly comprises a stator outer cylinder, a stator inner cylinder, a stator winding and a closed end piece;
the stator inner barrel and the stator outer barrel are concentrically arranged to enclose to form an accommodating space for accommodating the stator winding;
the closed end piece is respectively connected with the stator outer cylinder and the stator inner cylinder so as to close the accommodating space;
and the inner wall and two ends of the stator inner cylinder are respectively provided with insulating paper.
The stator winding is installed, sealed and fixed through the stator outer cylinder and the stator inner cylinder, the insulativity of the stator assembly is guaranteed, and the reliability of the arrangement of the cooling flow channel in the motor is guaranteed.
Preferably, the water pump further comprises a front end cover, a front shell, a rear end cover and a rear shell;
along the axial direction of the water pump outer cylinder, the front end cover and the front shell are respectively fixed on the inner wall and the outer wall of one end of the water pump outer cylinder, and the rear end cover and the rear shell are respectively fixed on the inner wall and the outer wall of the other end of the water pump outer cylinder;
the front end cover and the flow guide shell enclose an installation cavity;
the front end cover comprises a front disc body and a front end body which are connected with each other. The front end body is a cylindrical barrel-shaped structure, and a hollow channel of the barrel-shaped structure forms an inlet of the water pump; the front end cover also comprises a cylindrical extension port, and the extension port is positioned between the front end body and the front disk body; the diameter of the extension opening is smaller than that of the water inlet hole, and the extension opening extends into the water inlet hole. The extension opening and the water inlet hole are overlapped to form an inner opening ring structure, and the inner opening ring structure has the effects of reducing the caliber, improving the lift and preventing backflow; the impeller is located the internal orifice ring position, and the water that the water pump import got into most can be through the impeller water conservancy diversion of impeller to improve the rotation effect of rivers when the motor is out of work, reduce the dirt in the water pump and pile up.
The front end cover, the front shell, the rear end cover and the rear shell form reliable fixation on the outer cylinder of the water pump, a closed installation cavity is formed, and the arrangement of the first space and the first flow channel is facilitated.
Preferably, the impeller comprises a front wheel cover and a rear wheel body, the rear wheel body is provided with a plurality of vortex plates arranged around the axis of the rear wheel body in a circumferential array, the front wheel cover is attached and fixed to the outer end of the vortex plates, the axis of the front wheel cover is provided with a water inlet hole, and the axis of the rear wheel body is provided with a mounting hole connected with the rotating shaft.
The water inlet hole is used for water inlet, the front wheel cover and the rear wheel body are hermetically matched with the vortex plate to form flow guide water outlet from the axial direction to the circumferential direction, one-way driving of water flow is achieved, the impeller can guide a part of water into the flow guide shell after water is guided, and the flow guide shell is convenient to distribute and guide the water.
Preferably, the rear end cover comprises a rear disc body and a rear end body which are connected with each other; the rear end body is of a cylindrical tubular structure, and a transition space with a U-shaped cross section is arranged in the rear disc body; one side of the middle part of the transition space is communicated with the second space, and the edge of the transition space is communicated with the first space; the transition space is communicated with the rear end body; a pressure sensor is arranged in the transition space; the rear end body is internally provided with a flow sensor.
The smoothness of the first flow channel and the second flow channel is measured by matching the pressure sensor with the flow sensor, so that the motor in the water pump can be cooled by enough water, and the cooling efficiency is improved; and the real-time overhaul is convenient.
The invention has the following beneficial effects: the first flow channel corresponding to the motor stator and the second flow channel corresponding to the space between the motor stator and the motor rotor can be provided, the integrated heat dissipation of the motor is realized through the first flow channel and the second flow channel, a cooling flow channel does not need to be arranged outside the motor, and the cooling efficiency is high; the diversion shell is arranged to complete diversion of the water body, the water permeable holes and the vortex groove respectively correspond to the first flow channel and the second flow channel, sufficient cooling of the water body of the two groups of flow channels is guaranteed, and cooling efficiency is guaranteed; the deposition of impurities in the water pump can be realized, and the blockage of the impurities in the rotor flow channel is prevented.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a side view schematically illustrating the construction of the guide shell according to the present invention.
Fig. 4 is a front structural view of the guide shell of the present invention.
Fig. 5 is a schematic view of the structure of the bearing of the present invention.
Fig. 6 is a schematic view of the structure of the impeller in the present invention.
Fig. 7 is an enlarged schematic view at a in fig. 1.
Fig. 8 is a schematic view of the structure of the support pad of the present invention.
Fig. 9 is an enlarged schematic view at B in fig. 1.
In the figure: water pump outer cylinder 1, stator assembly 2, rotor assembly 3, guide shell 4, front end cover 5, front shell 6, rear end cover 7, rear shell 8, front disc 9, front end body 10, inlet 11, extension port 12, rotor 13, rotor sleeve 15, fixing seat 16, rotor sleeve 15, fixing seat 16, bearing 17, water diversion groove 18, water tank 19, stator outer cylinder 20, stator inner cylinder 21, stator winding 22, closed end piece 23, limiting hole 26, stator support 27, cooling groove 28, flow blocking ring 29, flow blocking groove 30, connecting rod 31, limiting cylinder 32, first space 33, rear disc 34, rear end body 35, second space 36, pressure sensor 38, thrust piece 39, impeller 40, rear wheel body 42, vortex plate 43, water inlet hole 44 mounting cavity 46, vortex groove 47, guide surface 49, downstream surface, 50 guide surface, guide strip 51, guide inclined surface 52, inclined surface 53, baffle surface 54, reflux groove 55, water permeable hole 56 and control box 57 bottom The shell 58 aluminum 59 pressure plate 60 controller 61 power cord 62 small impeller 63 lock nut 64 support thread 66 retaining nut 67 collar 68 retaining ring 69 annular reinforcement 70 shaft shoulder 71 round table 72 annular cavity 73.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In the embodiment of the method, the first step,
as shown in fig. 1 to 9, an integrated water pump for preventing impeller deposition is characterized by comprising a water pump outer cylinder 1, a stator assembly 2, a rotor assembly 3 and a guide shell 4.
The water pump outer cylinder 1 is in a cylindrical shape with two smooth ends, and further comprises a front end cover 5, a front shell 6, a rear end cover 7 and a rear shell 8; along the axis direction of the water pump outer cylinder 1, the front end cover 5 and the front shell 6 are respectively fixed on the inner wall and the outer wall of one end of the water pump outer cylinder 1, and the rear end cover 7 and the rear shell 8 are respectively fixed on the inner wall and the outer wall of the other end of the water pump outer cylinder. The front end cover 5, the front shell 6, the rear end cover 7 and the rear shell 8 are all circular ring disk-shaped structures. The front cover 5 includes a front disk 9 and a front body 10 connected to each other. The front end body 10 is a cylindrical barrel structure with a hollow passage forming the inlet 11 of the water pump. The front plate 9 has a trumpet-shaped open cavity that extends through the entire front plate 9. The lumen has a small end with a smaller cross-section and a large end with a larger cross-section. The opening of the small end part is communicated with the hollow channel of the front end cover 5. The large end part and the end surface of the guide shell 4 enclose to form a mounting cavity 46. The front cover 5 further includes a cylindrical extension port 12, and the extension port 12 is located between the front body 10 and the front disk 9. The diameter of the extension 12 is smaller than the diameter of the inlet opening 44 and the extension 12 extends into the inlet opening 44 to form an internal orifice ring structure. The inner orifice ring structure has the effects of reducing the caliber, improving the lift and preventing backflow. It is understood that in other embodiments of the present invention, the diameter of the extension 12 may be larger than the diameter of the water inlet hole 44, and the water inlet hole 44 may extend into the extension 12 to form an external orifice ring structure. Such an outer orifice structure has an effect of increasing the flow rate. This is merely an example and is not intended to be limiting.
At one end of the water pump outer cylinder 1 close to the inlet 11 of the water pump, the peripheral wall of the front end cover 5 is sleeved on the inner wall of the water pump outer cylinder 1, and the front end cover 5 and the inner wall of the water pump outer cylinder 1 are sealed through a sealing element. And the inner wall of the front shell 6 is sleeved on the outer wall of the water pump outer cylinder 1. The front end cover 5 and the front outer shell 6 jointly seal the end part of the water pump outer cylinder 1 close to the water pump inlet 11. The front housing 6 is detachably connected to the front cover 5 via a fixing cover. At one end of the water pump outer barrel 1 close to the water pump outlet, the peripheral wall of the rear end cover 7 is sleeved on the inner wall of the water pump outer barrel 1, and the rear end cover 7 and the inner wall of the water pump outer barrel 1 are sealed through a sealing element. And the inner wall of the rear shell 8 is sleeved on the outer wall of the water pump outer cylinder 1. The rear end cover 7 and the rear shell 8 jointly seal the end part of the water pump outer cylinder 1 close to the outlet of the water pump. The end part of the water pump outer cylinder 1 close to the water pump outlet is also provided with a bending part extending in the radial direction. The bent portion is embedded in a narrow space formed by the rear end cover 7 and the rear housing 8. In the narrow space, another sealing element is arranged between one side of the bending part, which is close to the outlet of the water pump, and the rear shell 8. The front housing 6 is sleeved on the front body 10 of the front cover 5, and the disk surface of the front housing 6 is pressed against the front disk body 9 of the front cover 5. The outer annular surface of the fixed cover is clamped on the inner annular surface of the front shell 6. The inner wall of the fixed cover is provided with internal threads, and the outer wall of the front end body 10 is provided with external threads. The inner wall of the fixed cover is in threaded connection with the outer wall of the front end body 10, so that the front shell 6 is firmly connected with the front end cover 5.
Preferably, the front end cover 5 and the rear end cover 7 are integrally formed by cast steel. The arrangement mode has the advantages of being good in structural strength and assembly reliability, and the problems of installation errors and leakage caused by the matching of multiple parts are solved better.
The rotor assembly 3 comprises a rotating shaft 13 and a rotor 14 on the rotating shaft 13, the rotating shaft 13 is provided with a rotor sleeve 15, the rotor 14 is fixed on the rotor sleeve 15, and the outer side of the rotor 14 is provided with an insulating layer; the length of the rotor sleeve 15 is greater than that of the rotor 14, and therefore, the second space 36 includes a space between the rotating shaft 13 and the stator inner cylinder 21, and a space between the rotor 14 and the stator inner cylinder 21. One end of the water pump outer cylinder 1 close to the impeller 40 is provided with a fixed seat 16 arranged at the outer end of the stator component 2; the fixed seat 16 is connected with the rotating shaft 13 through a bearing 17, and the bearing 17 is also arranged between the rotating shaft 13 and the rear end cover 7. The fixed seat 16 is of an annular structure, one end of the fixed seat 16 is abutted against the front end cover 5 through the diversion shell 4, and the other end of the fixed seat 16 is connected with the rear end cover 7 through the connecting rod 31; the overall structural stability of the water pump is further enhanced by the connection of the fixing seat 16 and the rear end cover 7 through the connecting rod 31. A water passing groove 19 is provided on the inner peripheral side of the bearing 17, and a water diversion groove 18 is provided on the end face of the bearing 17. The bearing 17 is a graphite bearing 17 made of graphite. The graphite bearing 17 is a bushing structure, and the graphite bearing 17 is matched with the rotating shaft 13 through a sliding bearing 17. The water passing groove 19 is arranged parallel to the axis of the bearing 17, and the water diversion groove 18 is arranged in the radial direction of the end face of the bearing 17. The water passing groove 19 is a straight groove, optionally, the water passing groove 19 can also be a chute or a spiral groove, but the straight groove has the characteristics of better water passing performance and capability of quickly reducing the temperature of the bearing 17. A small impeller 63 is arranged in the impeller 40, and the small impeller 63 is rotatably arranged on the rotor assembly; the front end of the impeller 40 is provided with a step part matched with the small impeller 63, one end of the rotating shaft 17 matched with the impeller 63 is provided with a locking thread, the locking thread is provided with a locking nut, and the locking thread locks the impeller; the outer end of the locking thread is provided with a step part matched with the small impeller 63, the locking thread is also provided with a supporting pad 65 matched with the small impeller 63, and the front end of the small impeller 63 is provided with a limiting nut 67; the support pad 65 and the locking thread are connected by a thread. The supporting pad 65 is made of a wear-resistant polymer material, and may be made of nylon. The side of the support pad 65 facing the small impeller 63 is provided with support threads 66 arranged in concentric circles.
The stator assembly 2 comprises a stator outer cylinder 20, a stator inner cylinder 21, a stator winding 22 and a closed end piece 23; the stator inner cylinder 21 and the stator outer cylinder 20 are concentrically arranged to form an accommodating space for accommodating the stator winding 22; the sealing end piece 23 is respectively connected with the stator outer cylinder 20 and the stator inner cylinder 21 so as to seal the accommodating space; the inner wall and two ends of the stator inner cylinder 21 are respectively provided with insulating paper.
The stator assembly 2 is hermetically arranged in the water pump outer cylinder 1, the rotor assembly 3 is rotationally arranged in the stator assembly 2, the outer walls of the water pump outer cylinder 1 and the stator assembly 2 enclose to form a first space 33, and the rear end cover 7 comprises a rear disc body 34 and a rear end body 35 which are connected with each other; the rear end body 35 is a cylindrical tubular structure, and a transition space with a U-shaped section is arranged in the rear disc body 34; one side of the middle part of the transition space is communicated with the second space 36, and the edge of the transition space is communicated with the first space 33; the transition space is communicated with the rear end body 35; a pressure sensor 37 is arranged in the transition space; a flow sensor 38 is provided in the rear body 35. The outer wall of the rotor assembly 3 and the inner wall of the stator assembly 2 enclose a second space 36; the shaft 13 is provided with a thrust piece 39 engaging the rotor sleeve 15, the thrust piece 39 being located in the second space 36.
The impeller 40 connected with the rotor assembly 3 is arranged in the guide shell 4, the impeller 40 comprises a front wheel cover 41 and a rear wheel body 42, five vortex plates 43 arranged around the axis of the rear wheel body 42 in a circumferential array are arranged on the rear wheel body 42, the front wheel cover 41 is attached and fixed to the outer ends of the vortex plates 43, a water inlet hole 44 is formed in the axis of the front wheel cover 41, and a mounting hole 45 connected with the rotating shaft 13 is formed in the axis of the rear wheel body 42. The guide shell 4 is internally provided with a mounting cavity 46 matched with the impeller 40, and the front end cover 5 and the guide shell 4 enclose the mounting cavity 46. Four vortex grooves 47 are arranged on the peripheral wall of the guide shell 4 corresponding to the installation cavity 46, and the vortex grooves 47 are communicated with the front end and the rear end of the guide shell 4; specifically, four air deflectors 48 are arranged on the peripheral wall of the mounting cavity 46; four baffles 48 are arranged in a circumferential array around the axis of the mounting cavity 46; one end of the guide plate 48 facing the installation cavity 46 is provided with a guide surface 49 eccentrically arranged with the installation cavity 46; a downstream surface 50 is arranged on one side of the other end of the guide plate 48, which is back to the installation cavity 46; a vortex groove 47 is formed between the guide surface 49 and the downstream surface 50 on the adjacent guide plate 48; four scroll grooves 47 are provided; the deflector surface 49 is arranged tangentially to the peripheral wall of the mounting chamber 46. One end of the downstream surface 50, which is far away from the bottom surface of the mounting cavity 46, is provided with a water bar 51, the outer end of the bottom of the vortex groove 47 is provided with a flow guide inclined surface 52 which is inclined towards the bottom surface of the mounting cavity 46, and the water bar 51 is provided with a matching inclined surface 53 which is matched with the flow guide inclined surface 52. The rear side of the guide shell 4 is provided with a flow blocking surface 54 matched with the vortex groove 47; twelve blocks which are arranged in a circular array around the axis of the guide shell 4 are arranged on the flow blocking surface 54; a return groove 55 is formed between adjacent baffle surfaces 54; the outlet ends of the spiral grooves 47 correspond to the four return grooves 55.
A water permeable hole 56 matched with the rotor assembly 3 is arranged in the guide shell 4, and the water permeable hole 56 is communicated with the front end and the rear end of the guide shell 4; the water inlet end of the water pump, the vortex groove 47, the first space 33 and the water outlet end of the water pump form a first flow channel; the water inlet end of the pump, the water permeable holes 56, the second space 36 and the water outlet end of the pump form a second flow path.
The water pump also comprises a control device arranged at the bottom of the water pump outer barrel 1. The control device includes a cylindrical control box 57, a plate-like bottom case 58, and an aluminum member 59, a pressure plate 60, a controller 61, and a power supply line 62. One side of the control box 57 close to the water pump outer barrel 1 is respectively clamped with the front end cover 5 and the rear end cover 7, and one side of the control box 57 far away from the water pump outer barrel 1 is respectively in threaded connection with the front end cover 5 and the rear end cover 7 through bolts. The control box 57 and the bottom case 58 enclose a closed box-shaped space. The aluminum piece 59 is clamped in the control box 57, and the aluminum piece 59 is connected with the water pump outer barrel 1 in a propping manner. The aluminum member 59 has a good conductive effect, so that the grounding effect of the water pump is guaranteed. The aluminum member 59 also has an extension member adjacent the bottom case 58 on which a controller 61 is provided via a pressure plate 60. The controller 61 is adhered to the pressing plate 60 by epoxy glue, and the whole of the two is fixed to the aluminum member 59.
Compared with the mode that the controller 61 is directly fixed on the aluminum piece 59 in the prior art, the controller 61 is more convenient to replace due to the arrangement, the controller 61 is attached to the outer face of the water pump outer barrel 1 through the pressing plate 60 and the aluminum piece 59, heat can be directly taken away through water flow, and the heat dissipation effect is achieved. Both the flow sensor 38 and the pressure sensor 37 are connected to the controller 61. One end of the power cord 62 is connected to the controller 61, and the other end of the power cord 62 extends in a direction away from the control box 57.
Optionally, the controller 61 here uses a low frequency hertz signal. Compared with the Bluetooth connection in the prior art, the method has the characteristics of good wall penetration and high sensitivity.
In use, the stator assembly 2 is energised and the stator windings 22 are generating a varying magnetic field to rotate the rotor 14. Because the rotor 14 is fixedly connected to the rotating shaft 13, when the rotor 14 rotates, the impeller 40 on the rotating shaft 13 rotates simultaneously. Specifically, after the water pump is started, the rotating shaft 13 drives the impeller 40 and the water to rotate at a high speed, and the water is centrifugally thrown to the outer edge of the impeller 40, so that the water flow starts to move. A part of water flows into the first space 33 through the vortex groove 47 of the volute flow guide shell 4 and is pumped to an outlet on the rear end cover 7 from the transition space, so that a first flow channel is formed; the other part of the water flow enters the second space 36 from the water permeable holes 56 through the water passing groove 19 of the front end bearing 17, then enters the transition space from the second space 36 through the water passing groove 19 of the rear end bearing 17, and then is pumped to the outlet on the rear end cover 7 through the transition space, so that a second flow channel is formed. The arrangement of the first flow passage and the second flow passage can meet the requirement of conveying fluid, the stator assembly 2, the rotor assembly 3 and the bearing 17 can be cooled by the pumped fluid, and the cooling effect is excellent.
Claims (10)
1. An integrated water pump for preventing impeller deposition is characterized by comprising a water pump outer cylinder, a stator component, a rotor component and a diversion shell;
the stator assembly is hermetically arranged in the water pump outer cylinder, the rotor assembly is rotationally arranged in the stator assembly, the water pump outer cylinder and the outer wall of the stator assembly enclose to form a first space, and the outer wall of the rotor assembly and the inner wall of the stator assembly enclose to form a second space;
an impeller connected with the rotor assembly is arranged in the guide shell, an installation cavity matched with the impeller is arranged in the guide shell, a plurality of vortex grooves are arranged on the peripheral wall of the installation cavity, and the vortex grooves are communicated with the front end and the rear end of the guide shell; a small impeller is arranged in the impeller and is rotationally arranged on the rotor component;
a water permeable hole matched with the rotor assembly is formed in the diversion shell and is communicated with the front end and the rear end of the diversion shell;
a water inlet end of the water pump, the vortex groove, the first space and a water outlet end of the water pump form a first flow channel;
the water inlet end of the water pump, the water permeable hole, the second space and the water outlet end of the water pump form a second flow passage.
2. The integrated impeller deposit prevention water pump as claimed in claim 1, wherein the rotor assembly comprises a rotating shaft and a rotor on the rotating shaft, and an insulating layer is provided outside the rotor;
one end of the outer cylinder of the water pump, which is close to the impeller, is provided with a fixed seat arranged at the outer end of the stator component;
the fixing seat is connected with the rotating shaft through a bearing, a water passing groove is formed in the inner peripheral side of the bearing, and a water diversion groove is formed in the end face of the bearing.
3. The integrated impeller deposit prevention water pump as claimed in claim 1, wherein the rear side of the guide shell is provided with a flow blocking surface fitted with a scroll groove;
a plurality of guide plates are arranged on the peripheral wall of the mounting cavity;
the guide plates are arranged in a circumferential array around the axis of the installation cavity;
one end of the guide plate, facing the side of the installation cavity, is provided with a guide surface which is eccentrically arranged with the installation cavity; a downstream surface is arranged on one side of the other end of the guide plate, which is back to the mounting cavity; a vortex groove is formed between the flow guide surface and the downstream surface on the adjacent flow guide plate;
the flow guide surface is tangent to the peripheral wall of the installation cavity.
4. An integrated impeller sedimentation prevention water pump as claimed in claim 3, wherein a protruding ring is provided on a side of the guide casing facing the fixing base, an outer side of the protruding ring and an end of the flow blocking surface are integrally provided, a limit ring is provided on a side of the fixing base facing the guide casing, an outer side of the limit ring is overlapped with an inner side of the protruding ring, an annular reinforcing portion protruding toward the fixing base is provided on the water permeable hole, a shoulder portion fitting the annular reinforcing portion is provided on the fixing base, and an end of the shoulder portion facing the guide casing is provided with a recessed circular table surface.
5. The integral impeller sedimentation prevention water pump as claimed in claim 3 or 4, wherein the downstream surface is provided at an end thereof remote from the bottom surface of the mounting chamber with a water bar, the outer end of the bottom of the spiral groove is provided with a guide slope inclined toward the bottom surface of the mounting chamber, and the water bar is provided with a mating slope for mating with the guide slope.
6. The integrated water pump for preventing the impeller from depositing as claimed in claim 2, wherein the front end of the impeller is provided with a step part for matching with the small impeller, one end of the rotating shaft for matching with the impeller is provided with a locking thread, the locking thread is provided with a locking nut, the outer end of the locking thread is provided with a step part for matching with the small impeller, the locking thread is further provided with a supporting pad for matching with the small impeller, and the front end of the small impeller is provided with a limit nut; the supporting pad is connected with the locking thread through threads.
7. The integrated impeller deposit prevention water pump as claimed in claim 6, wherein the supporting pad is made of wear-resistant polymer material, and the side of the supporting pad facing the small impeller is provided with supporting lines arranged in concentric circles.
8. The integrated impeller deposit prevention water pump as claimed in claim 1, wherein the impeller comprises a front wheel cover and a rear wheel body, the rear wheel body is provided with a plurality of vortex plates circumferentially arranged around an axis of the rear wheel body, the front wheel cover is attached and fixed to outer ends of the vortex plates, an inlet hole is formed in the axis of the front wheel cover, and a mounting hole connected with the rotating shaft is formed in the axis of the rear wheel body.
9. The integrated impeller deposit prevention water pump as claimed in claim 1, further comprising a front cover, a front housing, a rear cover and a rear housing;
along the axial direction of the water pump outer cylinder, the front end cover and the front shell are respectively fixed on the inner wall and the outer wall of one end of the water pump outer cylinder, and the rear end cover and the rear shell are respectively fixed on the inner wall and the outer wall of the other end of the water pump outer cylinder;
the front end cover and the flow guide shell enclose an installation cavity;
the front end cover comprises a front disc body and a front end body which are connected with each other;
the front end body is of a cylindrical tubular structure, and a hollow channel of the tubular structure forms an inlet of the water pump; the front end cover also comprises a cylindrical extension port, and the extension port is positioned between the front end body and the front disk body; the diameter of the extension opening is smaller than that of the water inlet hole, and the extension opening extends into the water inlet hole.
10. The integrated impeller-deposit prevention water pump as recited in claim 9, wherein the rear end cap comprises a rear disk body and a rear end body connected to each other; the rear end body is of a cylindrical tubular structure, and a transition space with a U-shaped cross section is arranged in the rear disc body; one side of the middle part of the transition space is communicated with the second space, and the edge of the transition space is communicated with the first space; the transition space is communicated with the rear end body; a pressure sensor is arranged in the transition space; the rear end body is internally provided with a flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2022/082242 WO2023060843A1 (en) | 2020-12-25 | 2022-03-22 | Integrated water pump for preventing impeller deposition |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020115637107 | 2020-12-25 | ||
| CN202011563710.7A CN112576519A (en) | 2020-12-25 | 2020-12-25 | Canned motor pump and water supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114278576A true CN114278576A (en) | 2022-04-05 |
| CN114278576B CN114278576B (en) | 2022-10-04 |
Family
ID=75140562
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011563710.7A Pending CN112576519A (en) | 2020-12-25 | 2020-12-25 | Canned motor pump and water supply system |
| CN202111204533.8A Active CN114278576B (en) | 2020-12-25 | 2021-10-15 | Integrated impeller deposit prevention water pump |
| CN202111203085.XA Active CN114233639B (en) | 2020-12-25 | 2021-10-15 | Double-runner water pump convenient to shunt |
| CN202111204517.9A Active CN114233640B (en) | 2020-12-25 | 2021-10-15 | High-efficient radiating double fluid passage water pump |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011563710.7A Pending CN112576519A (en) | 2020-12-25 | 2020-12-25 | Canned motor pump and water supply system |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111203085.XA Active CN114233639B (en) | 2020-12-25 | 2021-10-15 | Double-runner water pump convenient to shunt |
| CN202111204517.9A Active CN114233640B (en) | 2020-12-25 | 2021-10-15 | High-efficient radiating double fluid passage water pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (4) | CN112576519A (en) |
| WO (3) | WO2023060842A1 (en) |
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| CN114233641A (en) * | 2021-10-29 | 2022-03-25 | 利欧集团浙江泵业有限公司 | Double-flow-passage heat-dissipation water pump |
| CN115158622A (en) * | 2022-06-15 | 2022-10-11 | 中国船舶重工集团公司第七一九研究所 | Integrated motor propulsion unit suitable for complex water area |
| CN115182886A (en) * | 2021-10-29 | 2022-10-14 | 利欧集团浙江泵业有限公司 | Double-runner water pump integrated with controller |
| WO2023060842A1 (en) * | 2020-12-25 | 2023-04-20 | 利欧集团浙江泵业有限公司 | High-efficiency heat dissipation dual-flow channel water pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114198341A (en) * | 2021-10-22 | 2022-03-18 | 浙江泰福泵业股份有限公司 | Water-cooling permanent magnet canned motor pump |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114233639A (en) | 2022-03-25 |
| CN112576519A (en) | 2021-03-30 |
| CN114233640A (en) | 2022-03-25 |
| WO2023060842A1 (en) | 2023-04-20 |
| CN114278576B (en) | 2022-10-04 |
| WO2023060848A1 (en) | 2023-04-20 |
| CN114233640B (en) | 2023-03-10 |
| CN114233639B (en) | 2023-03-10 |
| WO2023060843A1 (en) | 2023-04-20 |
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