Rotor impeller assembly and wet operation circulating pump with rotor impeller assembly

Abstract

The rotor impeller assembly comprises an impeller assembly and a rotor assembly, the impeller assembly comprises an impeller, the rotor assembly comprises a rotor rod and a permanent magnet, the rotor rod is of a middle through hole structure, the permanent magnet is arranged in the middle through hole structure, and the permanent magnet is arranged in the middle through hole structure. A rear bearing containing space is formed in the axial extending position of the rear end face of the rotor rod, an impeller assembly containing space is formed in the axial extending position of the front end face of the rotor rod, the rotor rod is detachably connected with the impeller, and the impeller assembly further comprises a front sliding bearing fixedly connected with the impeller. The rotor assembly further comprises a rear sliding bearing fixed in the rear bearing containing space. Compared with the prior art, the utility model has the advantages of simple assembly, time and labor saving, high production efficiency and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wet running circulating pump, especially a rotor impeller assembly and a wet running circulating pump with the rotor impeller assembly. BACKGROUND

[0002] As the core power device of the liquid circulating system, the core function of the wet running circulating pump is to continuously drive fluid circulation through mechanical energy to realize heat exchange, medium transmission or pressure maintenance, and it is widely used in the fields of heating, ventilation, air conditioning, industrial cooling, hot water supply, chemical process and automobile thermal management. The typical feature of the wet running centrifugal pump relative to the dry running centrifugal pump is that it has a shield tank, which isolates the stator and the rotor. The shield tank limits the flow of liquid into the stator, converting the dynamic seal of the dry running centrifugal pump into a static seal. The rotor assembly and the shaft support system of the wet running circulating pump are arranged in the shield tank. Under the action of the electromagnetic force of the alternating magnetic field of the stator armature winding, the rotor assembly drives the bearing and the impeller assembly to rotate around the center fixed shaft. The rotor assembly is composed of a permanent magnet and a bearing. The material of the permanent magnet includes injection molded ferrite, injection molded neodymium iron boron, sintered ferrite, sintered neodymium iron boron and bonded neodymium iron boron. According to the material of the permanent magnet, the permanent magnet basically has the characteristics of hard and brittle. How to fix the permanent magnet and the rotor assembly together, how to fix the rotor assembly and the impeller assembly together, and how to ensure the manufacturing precision of the rotor assembly and the impeller assembly have become urgent problems to be solved, and the economic cost of solving the above problems is significant.

[0003] After searching, the patent CN116753187A discloses a rotor impeller assembly, an electronic water pump and a new energy automobile, which includes a cylindrical support, a bearing, a blade and a sintered ferrite magnetic ring. An installation hole is arranged along the axial direction of the cylindrical support, and an annular mounting position is arranged along the circumferential direction of the cylindrical support. The bearing is arranged in the installation hole. The blade is mounted at the end of the cylindrical support. The sintered ferrite magnetic ring is arranged on the mounting position. The cylindrical support is integrally formed with the sintered ferrite magnetic ring and the bearing through an injection molding process. The impeller is part of the injection molding. Although this patent solves the problems of how to fix the permanent magnet and the rotor assembly together and how to fix the rotor assembly and the impeller assembly together, it does not solve the problem of how to ensure the manufacturing precision of the rotor assembly and the impeller assembly. Obviously, the impeller and the cylindrical mounting support are of an integrated structure, which is complex and needs a sliding block type demolding, which reduces the injection molding precision of the impeller and increases the economic cost. UTILITY MODEL CONTENTS

[0004] The utility model aims to overcome the defects of the prior art and provide a rotor impeller assembly and a wet running circulating pump with the rotor impeller assembly.

[0005] The utility model discloses a purpose can be realized through the following technical schemes:

[0006] According to an aspect of the utility model, provide a kind of rotor impeller assembly, the rotor impeller assembly includes impeller assembly and rotor assembly, the impeller assembly includes impeller, the rotor assembly includes rotor bar and permanent magnet, the rotor bar is middle through-hole structure, and it is set up rear bearing receiving space at its rear end surface axial extension and it is set up impeller assembly receiving space at its front end surface axial extension, the rotor bar is detachably connected with impeller, the impeller assembly further includes the front sliding bearing of being fixedly connected with impeller, the rotor assembly further includes the rear sliding bearing of being fixed in rear bearing receiving space.

[0007] As preferred technical scheme, the rotor impeller assembly is installed on wet operation circulating pump, the wet operation circulating pump includes shield tank assembly, the impeller extends at least one handle radially on the end facing shield tank assembly.

[0008] As preferred technical scheme, the first open slot of the front end surface of the rotor bar extends towards impeller assembly receiving space, the first open slot extends the second open slot towards the radial direction of impeller assembly receiving space.

[0009] As preferred technical scheme, the rotor bar and handle are fixed using plug-in rotary type connection, the rotor bar is mortise and tenon cooperation connection with handle through first open slot and second open slot.

[0010] As preferred technical scheme, the rear bearing receiving space and impeller assembly receiving space are both cylindrical, and concentrically distributed with the outer diameter of rotor bar.

[0011] As preferred technical scheme, the impeller and front sliding bearing are fixedly connected using insert injection molding mode.

[0012] As preferred technical scheme, the impeller assembly further includes impeller upper cover plate, the impeller and impeller upper cover plate are all components made of plastic material, and the front sliding bearing is a component made of graphite material.

[0013] As preferred technical scheme, the rotor bar is fixedly connected with rear sliding bearing and permanent magnet using insert injection molding mode respectively.

[0014] As preferred technical scheme, the rotor bar is a component made of plastic material, the rear sliding bearing is a component made of graphite material, and the permanent magnet is a component made of ferrite or neodymium iron boron material.

[0015] According to another aspect of the utility model, a kind of wet running circulating pump with rotor impeller assembly, including pump head, stator assembly, and shield tank assembly, the wet running circulating pump further include the rotor impeller assembly.

[0016] Compared with prior art, the utility model has the following advantages:

[0017] 1) the impeller assembly of the utility model is produced separately with rotor assembly, production efficiency is high, impeller assembly can be split into impeller, impeller cover, front bearing, impeller, impeller cover can be designed and manufactured alone, more conducive to the control of manufacturing precision.When the front sliding bearing and impeller need to be fixed, insert injection molding process can be selected, and production efficiency is high;

[0018] 2) the rotor assembly of the utility model can be split into rear sliding bearing, permanent magnet, when the rear sliding bearing and permanent magnet need to be fixed, insert injection molding process can be selected, and production efficiency is high;

[0019] 3) the impeller assembly of the utility model is assembled with rotor assembly, and its connection mode is inserted rotary connection fixed, similar to the connection mode of bayonet bulb, assembly sequence is that the handle c4 of impeller c1 is aligned with the open slot e9 of rotor bar e2, and is slid into open slot e9 from top to bottom until being axially blocked and limited by open slot e10 of rotor bar e2, rotor bar e2 is fixed, and impeller assembly is rotated counterclockwise into open slot e10, assembly is simple, time-saving and labor-saving. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure diagram of the utility model wet running circulating pump;

[0021] Figure 2 It is the structure diagram of the utility model impeller assembly and rotor assembly;

[0022] Figure 3 It is the sectional structure diagram of the utility model rotor bar;

[0023] Figure 4 It is the three-dimensional structure diagram of the utility model rotor bar;

[0024] Figure 5 It is the sectional structure diagram of the utility model impeller assembly and rotor assembly connection;

[0025] Figure 6 It is the three-dimensional structure diagram of the utility model impeller assembly and rotor assembly connection;

[0026] Wherein a is pump head, b is stator assembly, c is impeller assembly, d is shield tank assembly, e is rotor assembly;

[0027] a1 is the inner cavity of the pump head, b1 is the casing, b2 is the armature winding, c1 is the impeller, c2 is the impeller upper cover plate, c3 is the front sliding bearing, c4 is the handle, d1 is the center fixed shaft, d2 is the upper flat of the flange, d3 is the pump head sealing ring, e1 is the rear sliding bearing, e2 is the rotor rod, e3 is the permanent magnet, e4 is the rear end face, e5 is the front end face, e6 is the rear bearing receiving space, e7 is the impeller assembly receiving space, e8 is the outer diameter of the rotor rod, e9 is the first open slot, e10 is the second open slot;

[0028] A is the handle c4 sliding into the first open slot e9 axially limited, B is the fixed rotor rod e2 and the impeller assembly counterclockwise rotating into the second open slot e10. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0030] Embodiment 1

[0031] As shown in Figure 2 , the rotor impeller assembly of the present application comprises an impeller assembly c and a rotor assembly e, the impeller assembly c comprises an impeller c1, an impeller upper cover plate c2 and a front sliding bearing c3, the impeller c1 extends radially out of a handle c4 at one end facing the shielding tank assembly d, the rotor assembly e comprises a rear sliding bearing e1, a rotor rod e2 and a permanent magnet e3, as shown in Figure 3 , the rotor rod e2 is in the form of a through hole and has a rear bearing receiving space e6 and an impeller assembly receiving space e7 respectively formed at the axial extension of the rear end face e4 and the front end face e5, the rear bearing receiving space e6 and the impeller assembly receiving space e7 of the rotor rod e2 are substantially cylindrical in shape and concentrically distributed with the outer diameter e8 of the rotor rod, the front end face e5 of the rotor rod e2 extends a first open slot e9 facing the impeller assembly receiving space e7, the first open slot e9 extends a second open slot e10 in the radial direction of the impeller assembly receiving space e7, as shown in Figure 4 .

[0032] The rotor bar e2 is fixed with the rear sliding bearing e1 through the rear bearing receiving space e6, and the rotor bar e2 is fixedly connected with the permanent magnet e3 through the rotor bar outer diameter e8; the rotor bar e2 is matched with the handle c4 of the impeller c1 through the first open slot e9 and the second open slot e10, so that the fixed connection of the rotor assembly e and the impeller assembly c is realized, and the rotor-impeller assembly is formed, and the rotor-impeller assembly is sleeved on the center fixed shaft d1, and under the electromagnetic force of the alternating magnetic field of the stator armature winding f2, the rotor-impeller assembly rotates concentrically around the center fixed shaft d1, as shown in Figure 1

[0033] The rotor bar e2 is matched with the handle c4 of the impeller c1 through the first open slot e9 and the second open slot e10, so that the fixed connection of the rotor assembly e and the impeller assembly c is realized, and the fixed connection mode is specifically an insertion and rotation type connection, which is similar to the connection mode of a bayonet bulb, as shown in Figure 5 Figure 6 The handle c4 of the impeller c1 is aligned with the first open slot e9 of the rotor bar e2, and the handle c4 is slid into the first open slot e9 from top to bottom until the handle c4 is axially blocked by the second open slot e10 of the rotor bar e2, so that the rotor bar and the impeller assembly are fixed, and the impeller assembly is rotated counterclockwise into the second open slot e10, and the gap between the handle c4 of the impeller c1 and the second open slot e10 of the rotor bar e2 is filled and welded, so that the assembly is simple, time-saving and labor-saving.

[0034] The fixed connection mode of the impeller c1 and the front sliding bearing c3 is insert injection molding, so that the production efficiency is greatly improved, the impeller c1 and the upper cover plate c2 of the impeller are made of plastic material, and the front sliding bearing c3 is made of graphite material;

[0035] The fixed connection mode of the rotor bar e2, the rear sliding bearing e1 and the permanent magnet e3 is insert injection molding, so that the production efficiency is greatly improved, the rotor bar e2 is made of plastic material, the rear sliding bearing e1 is made of graphite material, and the permanent magnet is made of ferrite or neodymium iron boron material.

[0036] Example 2

[0037] As Figure 1 ​​As shown, the utility model discloses a wet operation circulating pump of rotor impeller subassembly, including pump head a, stator subassembly b, impeller subassembly c, shield tank subassembly d and rotor subassembly e, shield tank subassembly has center fixed axle d1, shield tank subassembly d is contacted with the liquid of the inner chamber a1 of pump head to stator subassembly b, and stator subassembly b includes casing b1, armature winding b2, and casing b1 cooperates casing sealing ring to isolate liquid from armature winding b2 contact;The inside of shield tank subassembly d is contacted with armature winding b2 by the cooperation of the flanging upper plane d2 of shield tank subassembly d and pump head sealing ring d3, realizes the rotor subassembly e of shield tank subassembly d, and center fixed axle d1 is always infiltrated by pumping medium, and the center fixed axle d1 in the inside of shield tank subassembly d is fixed together with shield tank subassembly d through insert injection molding, and the fixed position is radially centrally distributed.

[0038] Wherein the specific structure and principle of impeller subassembly c and rotor subassembly e are same with embodiment 1.

[0039] The above is only the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, and anyone skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be the protection scope of the claims.

Claims

1. A rotor impeller assembly comprising an impeller assembly (c) and a rotor assembly (e), the impeller assembly (c) comprising an impeller (cl), the rotor assembly (e) comprising a rotor bar (e2) and a permanent magnet (e3), the rotor bar (e2) being a middle through-hole structure, and having a rear bearing receiving space (e6) opened at an axial extension of a rear end surface (e4) thereof and an impeller assembly receiving space (e7) opened at an axial extension of a front end surface (e5) thereof, the rotor bar (e2) being detachably connected with the impeller (cl), characterized in that, The impeller assembly (c) further comprises a front sliding bearing (c3) fixedly connected with the impeller (c1), and the rotor assembly (e) further comprises a rear sliding bearing (e1) fixed in a rear bearing receiving space (e6).

2. The rotor assembly of claim 1, wherein The rotor impeller assembly is installed on a wet-running circulating pump, and the wet-running circulating pump comprises a shield tank assembly (d), and the impeller (c1) extends at least one handle (C4) radially at one end facing the shield tank assembly (d).

3. The rotor assembly of claim 2, wherein The front end face (e5) of the rotor rod (e2) extends a first open slot (e9) towards the impeller assembly receiving space (e7), and the first open slot (e9) extends a second open slot (e10) in the radial direction of the impeller assembly receiving space (e7).

4. The rotor assembly of claim 3, wherein The rotor rod (e2) is fixedly connected with the handle (C4) in an insertion and rotation mode, and the rotor rod (e2) is connected with the handle (C4) in a mortise and tenon mode through the first open slot (e9) and the second open slot (e10).

5. The rotor assembly of claim 1, wherein The rear bearing receiving space (e6) and the impeller assembly receiving space (e7) are both cylindrical and concentrically distributed with the outer diameter (e8) of the rotor rod.

6. The rotor assembly of claim 1, wherein The impeller (c1) and the front sliding bearing (c3) are fixedly connected in an insert injection molding mode.

7. The rotor assembly of claim 6, wherein The impeller assembly (c) further comprises an impeller upper cover plate (c2), and the impeller (c1) and the impeller upper cover plate (c2) are both made of plastic material, and the front sliding bearing (c3) is made of graphite material.

8. The rotor assembly of claim 1, wherein The rotor rod (e2) is fixedly connected with the rear sliding bearing (e1) and the permanent magnet (e3) in an insert injection molding mode.

9. The rotor assembly of claim 8, wherein The rotor rod (e2) is made of plastic material, the rear sliding bearing (e1) is made of graphite material, and the permanent magnet (e3) is made of ferrite or neodymium iron boron material.

10. A wet-running circulating pump having a rotor impeller assembly, comprising a pump head (a), a stator assembly (b), and a screen tank assembly (d), characterized in that, The wet-running circulating pump further comprises the rotor impeller assembly of any one of claims 1-9.

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