CN201661501U - Multi-stage centrifugal pump shaft sleeve and multi-stage centrifugal pump - Google Patents
Multi-stage centrifugal pump shaft sleeve and multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN201661501U CN201661501U CN2010201280736U CN201020128073U CN201661501U CN 201661501 U CN201661501 U CN 201661501U CN 2010201280736 U CN2010201280736 U CN 2010201280736U CN 201020128073 U CN201020128073 U CN 201020128073U CN 201661501 U CN201661501 U CN 201661501U
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- centrifugal pump
- impeller
- rotating shaft
- shaft sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a multi-stage centrifugal pump shaft sleeve with stable appearance and high strength and a multi-stage centrifugal pump using the shaft sleeve and having reliable rotation and low cost. A shaft sleeve main body is cylindrical and the center shaft part of the shaft sleeve is provided with a shaft hole leading the shaft sleeve to be fastened with a rotating shaft of the centrifugal pump circumferentially; and the outer layer of the shaft sleeve is made of plastic, and the inner layer thereof is made of metal. The shaft sleeve is made of composite material, thus having both the characteristics of high strength and high rigidity of the lining metal layer and the advantages of easy processing and low cost of the outer plastic layer; and the rigidity of metal leads the mechanical strength of the shaft sleeve to be improved greatly and the shaft sleeve to be difficult to deform, while the wear resistance of metal leads the wear resistance of front and rear end surfaces of the shaft sleeve to be improved greatly.
Description
Technical field
The utility model relates to a kind of centrifugal pump axle sleeve and centrifugal pump, relates in particular to a kind of multistage centrifugal pump axle sleeve and multistage centrifugal pump.
Background technique
Centrifugal pump is as a kind of simple in structure, and the liquid delivery pump of reliable performance now has been widely used in the every aspect of producing, living.The basic structure of centrifugal pump comprises pump case, rotating shaft, impeller, axle sleeve and gland seal device; Have liquid-inlet and liquid outlet on the described pump case, impeller and axle sleeve are positioned at pump case, impeller axis position and axle sleeve axis position are provided with axis hole, described rotating shaft injection pump case, space between airtight pump case of described gland seal device and the rotating shaft, rotating shaft runs through the axis hole of impeller and the axis hole of axle sleeve, the axis hole of impeller all engages with rotating shaft with the axis hole of axle sleeve, driving rotating shaft by power such as the motor in the external world or internal-combustion engines then rotates, and then the impeller rotation, the liquid in the impeller is subjected to the promotion of blade and rotates jointly with blade.The centrifugal force that is produced by rotation makes liquid outwards be moved by the center, and obtains the momentum increment.In the impeller periphery, liquid is thrown out of, and the liquid outlet by pump case transfers out, because the attenuating of liquid velocity, part kinetic energy is converted into the pressure energy in the course of conveying, thereby the resistance that overcomes discharge conduit constantly outflows.The liquid at suction eye place makes the suction port place form low pressure (or vacuum) because of outwards throwing away, thereby the liquid in the suction pit is pressed into the suction port of impeller continuously by the liquid-inlet on the pump case under liquid level pressure (being generally atmospheric pressure) effect, forms the continuous effect of pumping.
Wherein impeller is the core of centrifugal pump, and the high ouput force of its rotating speed is big, and the blade on the impeller plays main effect again, and impeller will pass through experiment of dynamic balancing before assembling.Inner and outer surface on the impeller requires smooth, to reduce the frictional loss of current.
Pump case is the main body of water pump.Play the support fixation effect.
The effect of rotating shaft is to be connected with motor, and impeller is passed in the torque of motor, so it is the critical piece that transmits mechanical energy.
Gland seal device plays the effect in space between sealing pivot and the pump case, avoids leaking.
The above is the general structure of centrifugal pump, and in the actual production using process, in order to obtain higher lift or pressure, we also often use multistage centrifugal pump.
The essential structure of multistage centrifugal pump is similar with Ordinary Centrifugal Pumps, but multistage centrifugal pump is provided with a plurality of impellers, separate by guide vane wheel between the impeller, guide vane wheel inside is provided with the fluid passage, and the effect of this fluid passage is the suction port place that the centrifugal liquid that goes out of impeller is imported to the next stage impeller.
In centrifugal pump, though engage between impeller and the rotating shaft, it is upwards non-slip synchronously with rotating shaft in the week of rotating shaft that but common engaging only can guarantee impeller, and can't guarantee impeller rotating shaft axially on do not move forward and backward dislocation, at this time need in rotating shaft, be positioned at usually on the position before the impeller or behind the impeller and overlap Upper shaft sleeve, to play the effect of location impeller in rotating shaft axially.Especially the impeller of metal material such as stainless steel, directly the impeller axis hole axially on process and the unusual difficulty of the axle sleeve of impeller one, cost is very high, so just need independently axle sleeve that impeller is located.
Especially in multistage centrifugal pump, owing to there are a plurality of impeller and guide vane wheels that intermesh and arrange, so the gap width between impeller and the guide vane wheel is unusual important parameters, in every money multistage centrifugal pump, this parameter all is well-designed, prove repeatedly, so, need in rotating shaft, put an axle sleeve usually between the two in order in actual mechanical process, to keep the gap width between impeller and the guide vane wheel.
Existing axle sleeve is generally plastic material, though above-mentioned material is with low cost, be easy to processing, but in assembly process under the effect of latching force, deformation takes place in axle sleeve easily, and in long-term using process, causes length change because of reasons such as wearing and tearing, intensity and rigidity deficiencies easily, shape deformation influences the Location accuracy between each parts of water pump.
And if adopt the axle sleeve of pure metal material, it is with high costs, is not easy to processing again.
The model utility content
It is stable that the technical problem that the utility model mainly solves provides a kind of external form, high strength, and multistage centrifugal pump axle sleeve cheaply, and use the running of this axle sleeve reliable, the multistage centrifugal pump that cost is low.
For solving above-mentioned first technical problem, the utility model provides a kind of multistage centrifugal pump axle sleeve, and the axle sleeve body shape of described axle sleeve is cylindrical, and axle sleeve axis position is provided with the axis hole that axle sleeve and centrifugal pump rotating shaft are circumferentially engaged; Described axle sleeve skin is a plastic material, and internal layer is a metal material.
Wherein, described plastic material can be PPO, and described metal material can be stainless steel.
Wherein, described axle sleeve main body endways radially outward extend and a circle projection.
Wherein, the shape of the internal layer of described axle sleeve can be for cylindrical by the cylindricality behind the pair of parallel planar interception, and the spacing between the described pair of parallel plane is less than described columniform diameter.
Wherein, the internal layer of described axle sleeve can form for a tinsel curling back head and the tail both sides butt joint, and mesh on joint tinsel head and the tail both sides.
For reaching second goal of the invention of the present utility model, the utility model provides a kind of multistage centrifugal pump, comprises pump case, rotating shaft, impeller, axle sleeve and gland seal device; Have liquid-inlet and liquid outlet on the described pump case, impeller and axle sleeve are positioned at pump case, impeller axis position and axle sleeve axis position are provided with axis hole, described rotating shaft injection pump case, space between airtight pump case of described gland seal device and the rotating shaft, rotating shaft runs through the axis hole of impeller and the axis hole of axle sleeve, and the axis hole of impeller all engages with rotating shaft with the axis hole of axle sleeve, and described axle sleeve is the described axle sleeve of claim 1 to 5.
Axle sleeve of the present utility model is owing to adopted composite material to make, both possessed the metal layer of liner high strength had been arranged, high rigid characters possesses the advantage that the outer layer plastic material is convenient to process again, because the rigidity of metal, axle sleeve mechanical strength strengthen greatly, not yielding, owing to the wear resistance of metal, the wear-resisting property on former and later two end faces of axle sleeve greatly improves simultaneously, make the axial length of axle sleeve in use obvious shortening can not take place, and then influence the location of impeller because of wearing and tearing.Use that reliability increases greatly in the multistage centrifugal pump running of axle sleeve of the present utility model, reduce cost simultaneously.
Description of drawings
Fig. 1 is the utility model embodiment 1 described axle sleeve structure schematic representation;
Fig. 2 is the utility model embodiment 1 described axle sleeve plan view;
Fig. 3 is the utility model embodiment 1 described axle sleeve worm's eye view;
Fig. 4 is the utility model embodiment 2 described centrifugal pump interior section structure explosive views.Description of symbols:
1 axle sleeve, 11 stainless steel inner linings
Outer 13 seams of 12 axle sleeve main bodys
14 protruding 15 axis holes
2 impellers, 3 guide vane wheels
Embodiment
By describing technology contents of the present utility model, structure characteristics in detail, realized purpose and effect, give explanation below in conjunction with mode of execution and conjunction with figs. are detailed.
Embodiment 1
See also Fig. 1, Fig. 2 and Fig. 3, present embodiment provides a kind of centrifugal pump axle sleeve, and the axle sleeve body shape of described axle sleeve is cylindrical, and axle sleeve axis position is provided with the axis hole 15 that axle sleeve and centrifugal pump rotating shaft are circumferentially engaged; Described axle sleeve main body outer 12 is the PPO material, and internal layer is a stainless steel inner lining 11.Being shaped as of described stainless steel inner lining 11 is cylindrical by the cylindricality behind the pair of parallel planar interception, and the spacing between the described pair of parallel plane is less than described columniform diameter.Stainless steel inner lining 11 is that the butt joint of head and the tail both sides formed after a stainless steel sheets curled, and the both sides engagement of joint stainless steel sheets head and the tail is shown in seam among the figure 13.Such inner lining structure has following advantage:
1. the rotating shaft shape of engaging is easy to processing with it, because columniform axle only needs through simple processing, two planes of pruning can become needed rotating shaft shape;
2. engaging closely is easy to transmission;
3. adopt the form of head and the tail both sides engagement to guarantee the precision that stainless steel sheets curls and processes.
Described axle sleeve main body radially outward endways extends and a circle projection 14.The material of projection 14 is identical with the material of lining main body skin 12.
The centrifugal pump axle sleeve production process that present embodiment provided is as follows: press described shape of leading portion and structure fabrication stainless steel inner lining 11, be specially and process the stainless steel sheets that relative both sides have the engagement shape, it curl is the stainless steel inner lining 11 of required form, place mould to pour into a mould described stainless steel inner lining 11 then, at stainless steel inner lining 11 peripheral cast PPO, form the described centrifugal pump axle sleeve of present embodiment.
Adopting stainless steel is because stainless steel is corrosion-resistant, mechanical strength is high as the material of liner.And PPO material one-time cast-forming does not need other cutting, and cost is low.
Embodiment 2
Consult Fig. 4, present embodiment provides a kind of multistage centrifugal pump of the embodiment's of use 1 described centrifugal pump axle sleeve.
Described multistage centrifugal pump comprises pump case, rotating shaft, impeller 2, guide vane wheel 3, axle sleeve 1 and gland seal device; Have liquid-inlet and liquid outlet on the described pump case, impeller 2, axle sleeve 1 has constituted impeller sets with guide vane wheel 3, each impeller sets stacks an axle sleeve 1 successively, an impeller 2 and a guide vane wheel 3, described multistage centrifugal pump has the impeller sets of many groups, impeller sets is positioned at pump case, impeller 2 axis positions, axle sleeve 1 axis position and guide vane wheel 3 axis positions are provided with axis hole, described rotating shaft injection pump case, space between airtight pump case of described gland seal device and the rotating shaft, rotating shaft runs through the axis hole of impeller 2, the axis hole of axle sleeve 1 and guide vane wheel 3, the axis hole of impeller 2 all engages with rotating shaft with the axis hole of axle sleeve 1, rotate with rotating shaft, but guide vane wheel 3 do not rotate with rotating shaft, and relative with pump case static, guide vane wheel 3 inside are provided with the fluid passage, and the effect of this fluid passage is the suction port place that the centrifugal liquid that goes out of impeller 2 is imported to next stage impeller 2.
In the present embodiment, spacing between 1 pair of two adjacent impeller sets of axle sleeve is kept and is played an important role, because the gap between two impeller sets is axle sleeve 1 and separates, so adopt embodiment's 1 described axle sleeve 1, its end face can be wear-resistant, can improve the rigidity of axle sleeve 1 again, stably centrifugal pump is kept the spacing between the impeller 2.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (6)
1. multistage centrifugal pump axle sleeve, the axle sleeve body shape of described axle sleeve is cylindrical, axle sleeve axis position is provided with the axis hole that axle sleeve and centrifugal pump rotating shaft are circumferentially engaged; It is characterized in that described axle sleeve comprises metal internal layer and plastic outer layer.
2. multistage centrifugal pump axle sleeve according to claim 1 is characterized in that, described plastic outer layer is the PPO skin, and described metal internal layer is the stainless steel internal layer.
3. multistage centrifugal pump axle sleeve according to claim 1 and 2 is characterized in that, the terminal radially outward of described axle sleeve main body extends and a circle projection.
4. multistage centrifugal pump axle sleeve according to claim 1 and 2 is characterized in that, being shaped as of the internal layer of described axle sleeve is cylindrical by the cylindricality behind the pair of parallel planar interception, and the spacing between the described pair of parallel plane is less than described columniform diameter.
5. multistage centrifugal pump axle sleeve according to claim 4 is characterized in that, the internal layer of described axle sleeve is that the butt joint of head and the tail both sides formed after a tinsel curled, the both sides engagement of joint tinsel head and the tail.
6. a multistage centrifugal pump comprises pump case, rotating shaft, impeller, axle sleeve and gland seal device; Have liquid-inlet and liquid outlet on the described pump case, impeller and axle sleeve are positioned at pump case, impeller axis position and axle sleeve axis position are provided with axis hole, described rotating shaft injection pump case, the axis hole of impeller and the axis hole of axle sleeve are run through in space between airtight pump case of described gland seal device and the rotating shaft, rotating shaft, and the axis hole of impeller all engages with rotating shaft with the axis hole of axle sleeve, it is characterized in that described axle sleeve is each described axle sleeve of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201280736U CN201661501U (en) | 2010-03-10 | 2010-03-10 | Multi-stage centrifugal pump shaft sleeve and multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201280736U CN201661501U (en) | 2010-03-10 | 2010-03-10 | Multi-stage centrifugal pump shaft sleeve and multi-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661501U true CN201661501U (en) | 2010-12-01 |
Family
ID=43231917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201280736U Expired - Lifetime CN201661501U (en) | 2010-03-10 | 2010-03-10 | Multi-stage centrifugal pump shaft sleeve and multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661501U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511222A (en) * | 2018-05-22 | 2018-09-07 | 河南森源电气股份有限公司 | Opening-closing transmission mechanism and shift fork adapter |
-
2010
- 2010-03-10 CN CN2010201280736U patent/CN201661501U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511222A (en) * | 2018-05-22 | 2018-09-07 | 河南森源电气股份有限公司 | Opening-closing transmission mechanism and shift fork adapter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202284569U (en) | Improved fan blade structure of centrifugal fan | |
| WO2012030052A3 (en) | Reaction-type turbine | |
| CN105275834A (en) | Three-dimensional flow centrifugal blower with low-speed multistage vertical split cylinder structure | |
| CN201661510U (en) | Guide impeller of multistage centrifugal pump and multistage centrifugal pump | |
| US6527506B2 (en) | Pump section for fuel pump | |
| WO2009028099A1 (en) | Turbo molecular drag pump | |
| CN201661501U (en) | Multi-stage centrifugal pump shaft sleeve and multi-stage centrifugal pump | |
| CN201661508U (en) | Water retaining ring for multi-stage centrifugal pumps and multi-stage centrifugal pump | |
| CN105317540A (en) | Turbocharger | |
| CN104632645A (en) | Double inlet multistage centrifugal compressor | |
| JP2016522357A (en) | Centrifugal rotor | |
| CN103925238A (en) | Epicycloid centrifugal pump impeller | |
| CN110332125B (en) | Compact axial flow pipeline pump | |
| CN204553260U (en) | A kind of bidirection air intake multistage centrifugal compressor | |
| CN201757082U (en) | Multistage centrifugal pump impeller and multistage centrifugal pump | |
| CN202451734U (en) | Hydraulic torque converter for minicar | |
| CN206320047U (en) | High-efficiency centrifugal pump | |
| CN105275884B (en) | The enhancing and its application of dynamical type leaf pump | |
| CN2482597Y (en) | Magnetic drive corrosion resistant fluorine plastic liner pump | |
| CN114876859A (en) | Industrial fluid conveying device | |
| CN205136060U (en) | Three -dimensional flow centrifugal blower of multistage perpendicular subdivision cartridge type structure of low -speed | |
| CN206398031U (en) | A kind of high energy holds closed-end hydraulic torque converter | |
| CN110080999B (en) | Centrifugal blower | |
| CN103899727B (en) | A kind of large-tonnage loader fluid torque-converter | |
| CN204739000U (en) | Axial -flow pump impeller structure that leaked on no leaf top |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |
|
| CX01 | Expiry of patent term |