CN2804442Y - Improved one-stage double-sucking centrifugal pump - Google Patents
Improved one-stage double-sucking centrifugal pump Download PDFInfo
- Publication number
- CN2804442Y CN2804442Y CN 200520070011 CN200520070011U CN2804442Y CN 2804442 Y CN2804442 Y CN 2804442Y CN 200520070011 CN200520070011 CN 200520070011 CN 200520070011 U CN200520070011 U CN 200520070011U CN 2804442 Y CN2804442 Y CN 2804442Y
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- pump
- stage double
- centrifugal pump
- suction formula
- lining
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Abstract
The utility model relates to the improvement of a one-stage double-sucking centrifugal pump. The utility model is characterized in that the pump body is composed of an integral spiral casing which is radially slit, annular inner pump bonnets in the left and the right sides and left and right basin-cover shaped water inflow side covers, and the overflowing mold surface liner of each component is equipped with a high-molecular material filling layer to make the complicated pump body overflowing mold surface able to adapt to a high-molecular material demoulding liner and expand the application range, and the utility model can be used for the transportation of corrosive and/or abrasive medium. Furthermore, this composite structure also makes the easily abraded inner pump bonnet able to implement separate exchanging and it not only reduces maintenance cost but also can make the inner pump bonnet made of more antiwear material to enhance the service life.
Description
Technical field
Model utility is about the improvement to single-stage double-suction formula centrifugal pump, relates in particular to a kind of single-stage double-suction formula centrifugal pump that can carry corrosion and/or abrasion medium.
Background technique
Single-stage double-suction formula centrifugal pump has characteristics such as feed flow is big, efficient is high, longitudinal balance power is good, thereby is applied in the big flow of many conveyings, low lift occasion.Yet existing single-stage double-suction formula centrifugal pump, because pump housing overcurrent die cavity is far beyond the Ordinary Centrifugal Pumps complexity, can't carry out lining, it all is the unlined metal pump housing of flow-passing surface, feasible application is subjected to necessarily placing restrictions on, be limited in to carry the clear water that do not contain solid particle or other liquid of physicochemical properties similar water, carry corrosion and/or abrasion medium and be suitable for.
The S type single step dual-sucking level middle open type centrifugal pump of Shanghai East Pump, the described flat-open type axial centrifugal pump of Chinese patent CN2628769 adopt the pump housing to be convenient to install the horizontal middle open type structure of renovating of impeller by axially cutting open to form more than rotating shaft.This structure is not only made complexity, needs pairing to dig and mills processing Hough face, and parts damages can only be changed whole pump case; And because volute, water-inlet cavity fuse, overcurrent die cavity complexity still can not the lining demoulding, therefore still can not do lining processing to pump housing overcurrent profile.
Chinese patent CN2168102, CN2247245, CN2277460, CN2299952 etc. are disclosed by some single-stage double-suction centrifugal pumps of radially cutting the axial compression combination open.Its artificer is all only just simple to consider that manufacturing processing is easy, axially go up that the split split surface is selected and about the design of water inlet side cover, cause pump volute and/or the water inlet side cover overcurrent profile can not the lining demoulding equally, therefore still can not carry out lining processing, combination pump housing flow-passing surface still is the bare metal face, the defective that exists the bare metal pump housing to bring equally.
So before this patent is made, single-stage double-suction formula centrifugal pump is all unreasonable owing to composite structure and Component Design, still can only single employing can not carry out the naked metal pump housing of flow-passing surface that lining is processed, be not suitable for liquid or slips such as carrying corrosion and/or abrasion, placed restrictions on the application area of the type centrifugal pump.
Secondly, the single-stage double-suction formula centrifugal pump of existing said structure, pump cover is an one with other assemblies all in it, and the suction eye side pump cover of centrifugal pump very easily weares and teares.Can cause the pump volumetric efficiency loss to increase after the interior pump cover impeller side wearing and tearing, pump efficiency descends significantly, and can not change separately, and has increased replacement cost.
Summary of the invention
The purpose of model utility is to overcome the deficiency of above-mentioned prior art, provides a kind of design and composite structure reasonable, can lining processing, be used for carrying corrosion and/or abrasion medium, and the single-stage double-suction formula centrifugal pump that can change separately of interior pump cover.
The model utility purpose realizes, the main improvement is that the metal pump housing radially is divided into the side cover of intaking about pump cover and basin lid shape in the whole spiral case that is fit to release liner, the left and right sides annular, behind the flow-passing surface lining, compress composition single-stage double-suction formula centrifugal pump shell respectively by axial combination.Specifically, model utility single-stage double-suction formula centrifugal pump, the metal single-stage double-suction formula centrifugal pump body that comprises axial compression split combination, it is characterized in that the said pump housing by the side cover of intaking about pump cover and basin lid shape in the whole spiral case that radially dissects, the left and right sides annular, each parts overcurrent profile lining has the macromolecular material lining.
The said whole spiral case of model utility is meant the radial and axial double suction type centrifugal pump spiral case that only comprises complete runner, at least one side radial opening greater than impeller diameter.
Said basin covers the side cover of intaking about shape, is meant the into similar basin shape of water side cover, suitable demolding structure.Wherein a kind of better is that its capping is provided with the sealing case to projecting inward installation sealing, and this structure can make rotating shaft sealing be installed on the side cover inner side surface, helps reducing pump housing axial length.
Said macromolecular material lining comprises the various macromolecular materials that are used for pump spiral case lining, for example ultra-high molecular weight polyethylene, polyurethane, polypropylene, polyethylene, PVC, rubber etc.Lining can adopt common mold pressing or pouring technology to be compound in flow-passing surface.For improving the combination force of the lining and the metal pump housing, prevent to shrink, expand because of difference variation causes lining in the using process, cause lining cracking and peel off to come off, a kind of better is to be welded with the Mian first net that embeds lining in the metal liner the inside, to prolong lining working life.
Use at single-stage double-suction formula centrifugal pump for enlarging moulded non-metal material impeller, improve anticorrosion, the wear-resisting property of single-stage double-suction formula centrifugal pump integral body, a kind of better is that impeller adopts two independent impellers mounting structure dorsad, to overcome the deficiency that the macromolecule combined impeller is difficult to compression moulding.
Model utility is because with single-stage double-suction formula centrifugal pump body, change the interior pump cover of whole spiral case, left and right sides annular and the basin that are fit to release liner into and cover water inlet side cover axial compression composite structure about shape, not only kept single-stage double-suction formula centrifugal pump advantage, and make complicated pump housing overcurrent profile can be fit to the macromolecular material release liner, thereby enlarged the application area of single-stage double-suction formula centrifugal pump, made it can be used to corrode and/or the conveying of abrasion medium.This composite structure also makes interior pump cover easy to wear can realize independent replacing in addition, has not only reduced maintenance cost, and pump cover is selected more high-abrasive material making in can making, thereby has improved working life.The Mian first net that is welded on the metal pump surface is arranged in the macromolecular material lining, effectively prevented from the cracking that lining contraction, expansion cause and peeled off to come off, improved the working life of lining greatly, make it to be used for the big occasion of difference variation and use.
Below in conjunction with three optimization embodiments, further specify model utility, but embodiment's concrete form should not be construed as the concrete qualification to the model utility structure.
Description of drawings
Fig. 1 cuts open structural representation for model utility embodiment axle.
Fig. 2 is another kind of interior pump cover structural representation.
Fig. 3 is structural representation in the band Mian first mesh liner.
Embodiment
Embodiment 1: referring to Fig. 1, model utility single-stage double-suction formula centrifugal pump, comprise the radial and axial complete runner that only has, the two ends radial opening is greater than impeller diameter, the centrifugal pump bulk metal spiral case 3 of band pump discharge, the spiral case both sides have greater than opening, the inboard interior pump cover 4 of annular that coincide with vane wheel profile forming, the interior pump cover outside has left and right sides basin lid shape to bring the side cover 1 of water connection mouth into, built-in two the mold pressing macromolecule double shrouded wheels 2 that make up dorsad of spiral case, nonmetal axle sleeve 5 is arranged in the rotating shaft, be sandwiched in between water side cover and pump spiral case by interior pump cover that (this structure can the omitted axial housing screw, thereby accomplish that the pump flow-passing surface is anticorrosion entirely) combining form, (outside the pump housing) compression axis is to combination outside flow-passing surface.Water inlet side cover capping has and inwardly stretches out the tubular sealing case 6 that sealing is installed, in shaft sealing 7 is installed, pump sucks import 8 and two water inlet side cover connection mouths link to each other.Each parts flow-passing surface mold pressing lining of the pump housing has anticorrosion, wear-resistant plastic layer 10.
Embodiment 2: referring to Fig. 2, interior pump cover 4 is by the high abrasion macromolecular material, and 11 mold pressings of interior clamp ring shape sheet metal form.
Embodiment 3: referring to Fig. 3, during lining, in lining metal face 9 surface soldered metal Mian first net 12 is arranged earlier, the lining lining 10 again.
Model utility single-stage double-suction formula centrifugal pump, whole spiral case both ends open can also small one and large one, as long as can be by the foliation wheel; Impeller also can adopt unshrouded impeller; Lining material can require to select corresponding suitable material for use according to fed sheet of a media, and lining method is looked the lining material difference, can adopt forms such as mold pressing, cast.
Claims (8)
1, single-stage double-suction formula centrifugal pump, the metal single-stage double-suction formula centrifugal pump body that comprises axial compression split combination, it is characterized in that the said pump housing by the side cover of intaking about pump cover and basin lid shape in the whole spiral case that radially dissects, the left and right sides annular, each parts overcurrent profile lining has the macromolecular material lining.
2,, it is characterized in that said interior pump cover periphery footpath is greater than the spiral case opening, between folder and spiral case and water inlet side cover according to the described single-stage double-suction formula of claim 1 centrifugal pump.
3,, it is characterized in that axial compression is the flow-passing surface external compression according to the described single-stage double-suction formula of claim 2 centrifugal pump.
4, according to the described single-stage double-suction formula of claim 1 centrifugal pump, it is characterized in that said in pump cover form by the embedded endless metal body of macromolecular material.
5,, it is characterized in that the double suction type centrifugal pump impeller is combined dorsad by two macromolecule impellers according to the described single-stage double-suction formula of claim 1 centrifugal pump.
6, according to claim 1,2,3,4 or 5 described single-stage double-suction formula centrifugal pumps, oriented projecting inward sealing case on the side cover capping that it is characterized in that intaking about said basin lid shape.
7,, it is characterized in that metal pump housing lining face is welded with the Mian first net that embeds lining according to claim 1,2,3,4 or 5 described single-stage double-suction formula centrifugal pumps.
8, according to claim 1,2,3,4 or 5 described single-stage double-suction formula centrifugal pumps, it is characterized in that said left and right sides influent side is stamped into water connection mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070011 CN2804442Y (en) | 2005-03-22 | 2005-03-22 | Improved one-stage double-sucking centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070011 CN2804442Y (en) | 2005-03-22 | 2005-03-22 | Improved one-stage double-sucking centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2804442Y true CN2804442Y (en) | 2006-08-09 |
Family
ID=36909734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520070011 Expired - Fee Related CN2804442Y (en) | 2005-03-22 | 2005-03-22 | Improved one-stage double-sucking centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2804442Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105814318A (en) * | 2013-12-06 | 2016-07-27 | Ksb 股份公司 | Plastic pump housing consisting of inner casing, outer casing and filling material therebetween |
| CN106762854A (en) * | 2017-02-27 | 2017-05-31 | 江苏大学镇江流体工程装备技术研究院 | A kind of anti-cavitation double feed inlet double-suction multi-stage pump |
| CN107781222A (en) * | 2017-10-20 | 2018-03-09 | 项达章 | A kind of split type sewage pump |
-
2005
- 2005-03-22 CN CN 200520070011 patent/CN2804442Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105814318A (en) * | 2013-12-06 | 2016-07-27 | Ksb 股份公司 | Plastic pump housing consisting of inner casing, outer casing and filling material therebetween |
| CN105814318B (en) * | 2013-12-06 | 2018-12-14 | Ksb 股份公司 | The plastics pump case being made of inner casing, shell and packing material therebetween |
| CN106762854A (en) * | 2017-02-27 | 2017-05-31 | 江苏大学镇江流体工程装备技术研究院 | A kind of anti-cavitation double feed inlet double-suction multi-stage pump |
| CN107781222A (en) * | 2017-10-20 | 2018-03-09 | 项达章 | A kind of split type sewage pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060809 Termination date: 20130322 |