CN220204138U - Pipeline pump - Google Patents

Abstract

The utility model provides a pipeline pump, which comprises a cylindrical shell, a first mounting seat and a second mounting seat which are covered at two ends of the shell, a stator fixed on the first mounting seat, a rotor driven by the stator to rotate, a ceramic fixed shaft, a first shaft sleeve sleeved on the fixed shaft and a vane group coaxially fixed at the output end of the rotor, wherein the first shaft sleeve is sleeved on the fixed shaft; the two ends of the fixed shaft are respectively fixed on the first mounting seat and the second mounting seat, and the fixed shaft is coaxial with the shell; the inner ring of the rotor is fixedly connected with the outer ring of the shaft sleeve in a coaxial way; the first mounting seat is provided with a water outlet communicated with the inner cavity of the shell; the second mounting seat is provided with a water inlet communicated with the inner cavity of the shell. The ceramic fixed shaft of the pipeline pump is used for rotor rotation, rotation is not needed, friction between the rotor and the fixed shaft is reduced through the first shaft sleeve, breakage caused by radial shake generated by rotation of the ceramic fixed shaft is effectively avoided, and the fixed shaft can be lengthened, so that the application of the long ceramic shaft in the pipeline pump is realized.

Description

Pipeline pump

Technical Field

The utility model relates to the field of liquid conveying devices, in particular to a pipeline pump.

Background

The pipeline pump is a device for converting mechanical energy of a prime motor into liquid energy by means of high-speed rotation of an impeller, and can be divided into a centrifugal pump, an axial flow pump, a mixed flow pump and the like according to different shapes of blades and water outlet directions of the impeller, and can be divided into a water pump, a deep well pump, a pipeline pump and the like according to functional parts.

The pipeline pump is driven by a prime motor, such as a motor, and the motor shaft drives the impeller to rotate, so that liquid is pumped from the liquid inlet hole and transported to the liquid outlet hole. The rotating shaft of the pipeline pump is generally of two types, namely ceramic and steel, and the ceramic rotating shaft is not easy to deform due to the fact that the elastic modulus is larger than that of the ceramic rotating shaft, so that higher precision can be achieved, but the ceramic rotating shaft is not suitable for being manufactured to be too long, when the too long ceramic rotating shaft rotates, irregular radial shake is easily caused by the impact of an impeller and liquid, the ceramic rotating shaft is brittle, and is easy to break, so that the application of the ceramic rotating shaft in the pipeline pump with multiple impeller groups is severely restricted. Thus, there is a need for a tubing pump that does not have a ceramic shaft that is prone to breakage.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the pipeline pump with the ceramic shaft not easy to break.

The aim of the utility model is achieved by the following technical measures: the pipeline pump comprises a cylindrical shell, a first mounting seat and a second mounting seat which are covered at two ends of the shell, a stator fixed on the first mounting seat, a rotor driven by the stator to rotate, a ceramic fixed shaft, a first shaft sleeve sleeved on the fixed shaft and a vane group coaxially fixed at the output end of the rotor; the two ends of the fixed shaft are respectively fixed on the first mounting seat and the second mounting seat, and the fixed shaft is coaxial with the shell; the inner ring of the rotor is fixedly connected with the outer ring of the shaft sleeve in a coaxial way; the first mounting seat is provided with a water outlet communicated with the inner cavity of the shell; the second mounting seat is provided with a water inlet communicated with the inner cavity of the shell.

Preferably, the vane group is sleeved on a second sleeve of the fixed shaft and an impeller fixed on the outer peripheral surface of the second sleeve, a clamping block is arranged at one end, close to the rotor, of the second sleeve, a first clamping groove is formed in the corresponding position of the rotor, and the clamping block is embedded in the first clamping groove.

Preferably, the vane groups have at least two groups, one end of the second sleeve, which is far away from the rotor, is provided with a second clamping groove with the same shape as the first clamping groove, and the two second sleeves between the two adjacent vane groups are connected through the matching of the corresponding clamping blocks and the second clamping grooves.

Preferably, the rotor comprises a fixed shaft, and a thrust ring sleeved on the fixed shaft and positioned at the tail end of the second shaft sleeve far away from the rotor.

Preferably, the curved surface of the fixed shaft is provided with a through groove, the through groove is arranged along the axial direction of the fixed shaft, and the through groove is communicated with the inner cavity of the shell.

Preferably, the curved surface of the fixed shaft is provided with more than two through grooves, and the angles of the through grooves are equal.

Compared with the pipeline pump structure in the prior art, the pipeline pump structure has the following advantages:

1. the ceramic fixed shaft of the pipeline pump is used for rotor assembly, rotation is not needed, friction between the rotor and the fixed shaft is reduced through the first shaft sleeve, the phenomenon that the ceramic fixed shaft is broken due to radial shaking caused by rotation is effectively avoided, the fixed shaft can be lengthened, and therefore the long ceramic shaft is applied to the pipeline pump.

2. Through the structural fit of first draw-in groove, fixture block and second draw-in groove, can realize the nimble equipment of many blade group, application scope is wide.

3. The curved surface of the fixed shaft is provided with a through groove, when the pipeline pump works, part of water enters the through groove, and in the rotating process, the water in the through groove enters between the fixed shaft and the first shaft sleeve/the second shaft sleeve, so that on one hand, water lubrication can be performed, and friction is reduced; on the other hand, the surface temperatures of the fixed shaft, the first shaft sleeve and the second shaft sleeve can be reduced.

Drawings

Fig. 1 is a cross-sectional view of a pipeline pump of an embodiment.

Fig. 2 is a sectional view of a connection structure of the stationary shaft, the rotor, the first sleeve, and the second sleeve.

Fig. 3 is a schematic structural view of the stationary shaft.

Wherein: 10. a housing; 20. a first mount; 201. a water outlet; 30. a second mounting base; 301. a water inlet; 401. a stator, 402, a rotor; 403. a fixed shaft; 404. a first sleeve; 501. a second sleeve; 5011. a clamping block; 502. an impeller; 60. a thrust collar.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The terms "front end" and "end" are defined in terms of the order of flow of fluid through the tubing pump.

In the present utility model, the stator 401, the rotor 402, and the corresponding power supply modes and waterproof treatments are the same as those of the pump motor in the prior art, and are not described herein again because no improvement is involved.

As shown in fig. 1-3, the present embodiment provides a pipeline pump, which includes a cylindrical casing 10, a first mounting seat 20 and a second mounting seat 30 covered at two ends of the casing 10, a stator 401 fixed on the first mounting seat 20, a rotor 402 driven to rotate by the stator 401, a ceramic fixed shaft 403, a first shaft sleeve 404 sleeved on the fixed shaft 403, and a vane group coaxially fixed at an output end of the rotor 402; both ends of the fixed shaft 403 are fixed to the first mount 20 and the second mount 30, respectively, and the fixed shaft 403 is coaxial with the housing 10; the inner ring of the rotor 402 is fixedly connected with the outer ring of the shaft sleeve coaxially; the first mounting seat 20 is provided with a water outlet 201 communicated with the inner cavity of the shell 10; the second mounting seat 30 is provided with a water inlet 301 communicated with the inner cavity of the shell 10. The vane group is arranged on the second sleeve 501 of the fixed shaft 403 and the impeller 502 fixed on the outer peripheral surface of the second sleeve 501, a clamping block 5011 is arranged at one end of the second sleeve 501 close to the rotor 402, a first clamping groove is arranged at the corresponding position of the rotor 402, and the clamping block 5011 is embedded in the first clamping groove. The vane groups have two groups, and one end of the second sleeve 501 far away from the rotor 402 is provided with a second clamping groove with the same shape as the first clamping groove, and two second sleeves 501 between two adjacent vane groups are connected through the matching of the corresponding clamping blocks 5011 and the second clamping grooves. Also included is a thrust ring 60 that fits over the stationary shaft 403, the thrust ring 60 being located at the end of the second hub 501 remote from the rotor 402. The curved surface of the fixed shaft 403 is provided with a through groove, the through groove is arranged along the axial direction of the fixed shaft 403, and the through groove is communicated with the inner cavity of the shell 10. More than two through grooves are formed in the curved surface of the fixed shaft 403, and the angles of the through grooves are equal.

Working principle: the fixed shaft 403 is fixed to the first mount 20 and the second mount 30, the first vane group is fitted into the first clamping groove by the clamping block 5011 on the second shaft 501, the clamping block 5011 on the second shaft 501 of the second vane group is fitted into the second clamping groove on the second shaft 501 of the first vane group, and the thrust ring 60 fixes the two vane groups to the fixed shaft 403 in the axial direction. When the pipeline pump starts to work, the stator 401 drives the rotor 402, the rotor 402 drives the second shaft sleeve 501, so that the vane group is driven to rotate, fluid, for example, water is sucked in from the water inlet 301, and is discharged from the water outlet 201 after passing through the vane group. After a small amount of water enters from the water inlet 301, the water flows into the through groove, and a layer of flowing water film is formed between the rotating first shaft sleeve 404 and the fixed shaft 403 by the water in the through groove, so that friction between the first shaft sleeve 404 and the fixed shaft 403 can be reduced, and the first shaft sleeve 404 and the fixed shaft 403 can be cooled.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. The pipeline pump comprises a cylindrical shell, a first mounting seat and a second mounting seat which are covered at two ends of the shell, a stator fixed on the first mounting seat, and a rotor driven by the stator to rotate, and is characterized by also comprising a ceramic fixed shaft, a first shaft sleeve sleeved on the fixed shaft and a vane group coaxially fixed at the output end of the rotor; the two ends of the fixed shaft are respectively fixed on the first mounting seat and the second mounting seat, and the fixed shaft is coaxial with the shell; the inner ring of the rotor is fixedly connected with the outer ring of the shaft sleeve in a coaxial manner; the first mounting seat is provided with a water outlet communicated with the inner cavity of the shell; the second mounting seat is provided with a water inlet communicated with the inner cavity of the shell.

2. The pipeline pump according to claim 1, wherein the vane group is sleeved on a second sleeve of the fixed shaft and an impeller fixed on the outer peripheral surface of the second sleeve, a clamping block is arranged at one end, close to the rotor, of the second sleeve, a first clamping groove is arranged at a position corresponding to the rotor, and the clamping block is embedded in the first clamping groove.

3. The pipeline pump according to claim 2, wherein at least two vane groups are provided, a second clamping groove with the same shape as the first clamping groove is arranged at one end of the second sleeve, which is far away from the rotor, and the two second sleeves between two adjacent vane groups are connected through the matching of the corresponding clamping blocks and the second clamping grooves.

4. A tubing pump as claimed in claim 3 further comprising a thrust ring sleeved on said fixed shaft, said thrust ring being located at an end of said second hub remote from said rotor.

5. A tubing pump according to any of claims 1-4, wherein said stationary shaft has a curved surface with a through slot formed therein, said through slot being formed in an axial direction of said stationary shaft, said through slot being in communication with an interior cavity of said housing.

6. The tubing pump of claim 5 wherein said stationary shaft has two or more of said through slots formed in a curved surface thereof, each of said through slots being equiangular.