CN102734203B - Horizontal multistage pump axial inlet device and connecting structure thereof - Google Patents
Horizontal multistage pump axial inlet device and connecting structure thereof Download PDFInfo
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- CN102734203B CN102734203B CN201210246448.2A CN201210246448A CN102734203B CN 102734203 B CN102734203 B CN 102734203B CN 201210246448 A CN201210246448 A CN 201210246448A CN 102734203 B CN102734203 B CN 102734203B
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Abstract
The invention discloses a horizontal multistage pump axial inlet device. The existing horizontal multistage pump has the problems that an axial inlet device is heavy and the frictional area of a sliding bearing is large. The horizontal multistage pump axial inlet device comprises an inlet device main part, a connecting pipe, penetrating lever fixing devices and a wear-proof casing; the inlet device main part comprises an external rotating body and an internal barrel with a inside which are coaxial, and a rib plate; an inlet flange is formed at one end of the external rotating body, and is used for being connected with an inlet pipeline; a cover plate is formed at the other end of the external rotating body, and is used for being communicated with a first-stage section; the connecting pipe is formed at the upper part of the external rotating body, and is used for being communicated with a mechanical sealing lucubrating cooling return pipeline; the penetrating lever fixing devices are arranged on the periphery of the cover plate, and is used for fixing penetrating levers; and the internal barrel with the bottom is used for fixing a sliding bearing. The multistage pump axial inlet device has a small volume and light weight, and simultaneously has the effect of a bearing seat. The multistage pump axial inlet device ensures that the structure of a multistage inlet end is light and compact, the frictional area of the bearing is small, and the frictional loss is low. As the wear-proof casing is arranged in the position of an opening ring, the local wear resistance is improved.
Description
Technical field
The invention belongs to horizontal type multi-stage pump, specifically a kind of horizontal type multi-stage pump axial inlet device and linkage structure thereof.
Background technique
Horizontal type multi-stage pump is widely used in the industries such as embrane method desalination of sea water, water conservancy, petrochemical industry, sewage treatment.The horizontal type multi-stage pump that in the past obtained widely applying is mainly upper inlet upper outlet structure, the multistage pump of this structure when work, fed sheet of a media in pump the deflection of overall flow direction nearly 180 °, flow losses are very large.The horizontal type multi-stage pump forms that axially suck top outlet that adopt for the embrane method desalination of sea water developing rapidly in recent years more, the main flow direction nearly deflection of fed sheet of a media in pump 90 °, flow losses decrease.At present at home in the horizontal more piece pump of disclosed axial inlet, entrance point structure mainly contains two kinds of forms, a kind of is after bearing is arranged on first stage impeller, the double plain bearing housing of doing of chopped-off head stator, for fixing sliding bearing, stator designs very widely, and not only weight is large, and occupy larger axial distance, increased the bulkiness of multistage pump.Another kind of entrance point sliding bearing is arranged on first stage impeller choma outside, with choma Spielpassung.Because first stage impeller choma diameter is large, must adopt large diameter sliding bearing to coordinate with it, increased the friction area of sliding bearing and choma, leakage rate is increased; For with bearing fit, first stage impeller import and choma certainly will be widened, and cause the weight of pump to increase.In sum, there is the problem that axial inlet device is heavy, sliding bearing friction area is large in axial inlet horizontal type multi-stage pump at present.。
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is to overcome the defect that axial inlet device is heavy, sliding bearing friction area is large that existing horizontal type multi-stage pump exists, and a kind of horizontal type multi-stage pump axial inlet device and linkage structure thereof are provided.
To achieve the object of the present invention, the technological scheme that horizontal type multi-stage pump axial inlet device of the present invention adopts is: it comprises: inlet means main part, rod fixing device, adapter and wear-resistant sleeve, described rod fixing device and adapter are fixed on inlet means main part, and described wear-resistant sleeve is fixed on the endoporus of inlet means main part.
As optimization technique measure, described inlet means main part turns, is with round-ended cylinder and gusset to be made into integration by outer buttons, and described is positioned at round-ended cylinder the inner side that described outer buttons is turned, and described link of boards is turned and is with between round-ended cylinder in described outer buttons.
As optimization technique measure, described outer buttons turn comprise suction flange, cover plate and be connected to suction flange and cover plate between linkage section, the described inner side that is positioned at described linkage section with round-ended cylinder, described link of boards is between described linkage section and band round-ended cylinder.
As optimization technique measure, described rod fixing device is positioned at the edge of described cover plate.
As optimization technique measure, described wear-resistant sleeve is fixed on the position of the corresponding described cover plate of endoporus of described inlet means main part with pin.
As optimization technique measure, described adapter is fixed on described linkage section.
As optimization technique measure, the described neutral position, bottom with round-ended cylinder has perforate.
To achieve the object of the present invention, the technological scheme that the linkage structure of horizontal type multi-stage pump axial inlet device of the present invention adopts is: it comprises: chopped-off head sections, axle sleeve, first stage impeller, chopped-off head stator axle sleeve, axle and inlet means main part, rod fixing device, adapter, wear-resistant sleeve;
Described axle sleeve, first stage impeller, chopped-off head stator axle sleeve are enclosed within on axle and by the nut of shaft end and fix, and chopped-off head guide blade sleeve puts at chopped-off head guide vane teunnion;
Described inlet means main part turns, is with round-ended cylinder and gusset to be made into integration by outer buttons, described is positioned at round-ended cylinder the inner side that described outer buttons is turned, described link of boards is turned and is with between round-ended cylinder in described outer buttons, described rod fixing device and adapter are fixed on inlet means main part, and described wear-resistant sleeve is fixed on the endoporus of inlet means main part;
Described rod fixing device is connected with described chopped-off head sections by rod and fastening piece, band is established sliding bearing on round-ended cylinder, and described axle sleeve is supported on and on this sliding bearing, realizes chopped-off head stator, first stage impeller is clamped between chopped-off head sections and inlet means main part and the wear-resistant sleeve of the import external diameter of first stage impeller described in being positioned at.
The invention has the beneficial effects as follows: volume is little, lightweight, play the effect of bearing support simultaneously, make that multistage pump entrance point structure is light and handy compact, pivot friction area is little, frictional loss is low.Choma place arranges wear-resistant sleeve, has improved local abrasion resistance properties.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is that A-A in Fig. 1 is to sectional view;
Fig. 3 is the schematic diagram on chopped-off head sections by Standard shown in Fig. 1;
Number in the figure explanation:
1-rod and fastening piece, 2-rod fixing device, 3-inlet means main part, 4-axle sleeve, 5-nut, 6-axle, 7-sliding bearing, 8-takes over, 9-connecting tube, 10-chopped-off head sections, 11-chopped-off head stator, 12-wear-resistant sleeve, 13-chopped-off head stator axle sleeve, 14-first stage impeller;
3a-perforate, 3b-is with round-ended cylinder, 3c-gusset, 3d-suction flange, 3e-cover plate, 3f-linkage section.
Embodiment
Below in conjunction with Figure of description, the present invention will be further described.
Horizontal type multi-stage pump axial inlet device of the present invention, as shown in Figure 1, 2, it comprises: inlet means main part 3, rod fixing device 2, adapter 8 and wear-resistant sleeve 12, and rod fixing device 2 and adapter 8 are fixed on inlet means main part 3, and wear-resistant sleeve 12 is fixed on the endoporus of inlet means main part 3.Taking over 8 is communicated with for the lubrication return line with mechanical seal.
Further: inlet means main part 3 turns, is with round-ended cylinder 3b and gusset 3c to be made into integration by outer buttons, with round-ended cylinder 3b, is positioned at the inner side that outer buttons is turned, and gusset 3c is connected to outer buttons and turns and be with between round-ended cylinder 3b.Outer buttons turn comprise suction flange 3d for being connected with inlet ductwork, for the cover plate 3e that is connected with chopped-off head sections and be connected to suction flange 3d and cover plate 3e between linkage section 3f, with round-ended cylinder 3b, be positioned at the inner side of linkage section 3f, gusset 3c is connected between linkage section 3f and band round-ended cylinder 3b.Rod fixing device 2 is positioned at the edge of cover plate 3e, for fixing rod.Wear-resistant sleeve 12 use pins are fixed on the position of the corresponding cover plate 3e of endoporus of inlet means main part 3.Taking over 8 is fixed on linkage section 3f.Neutral position, bottom with round-ended cylinder 3b has perforate 3a, for the sliding bearing cooling and lubricating medium that circulates.
The linkage structure of horizontal type multi-stage pump axial inlet device of the present invention, comprising: chopped-off head sections 10, axle sleeve 4, first stage impeller 14, chopped-off head stator axle sleeve 13, axle 6 and inlet means main part 3, rod fixing device 2, adapter 8, wear-resistant sleeve 12;
Axle sleeve 4, first stage impeller 14, chopped-off head stator axle sleeve 13 are enclosed within on axle 6 and by the nut 5 of axle 6 ends and fix, and chopped-off head stator 11 is enclosed within on chopped-off head stator axle sleeve 13;
Inlet means main part 3 turns, is with round-ended cylinder 3b and gusset 3c to be made into integration by outer buttons, with round-ended cylinder 3b, be positioned at the inner side that outer buttons is turned, gusset 3c is connected to outer buttons and turns and be with between round-ended cylinder 3b, rod fixing device 2 and adapter 8 are fixed on inlet means main part 3, and wear-resistant sleeve 12 is fixed on the endoporus of inlet means main part 3;
Rod fixing device 2 is connected with chopped-off head sections 10 by rod and fastening piece 1, on band round-ended cylinder 3b, establish sliding bearing 7, axle sleeve 4 is supported on and on this sliding bearing 7, realizes chopped-off head stator 11, first stage impeller 14 is clamped between chopped-off head sections 10 and inlet means main part 3 and the import external diameter of first stage impeller 14 is positioned at wear-resistant sleeve (12).Band round-ended cylinder closed end is facing to pump inlet.
Because sliding bearing is arranged on axle head, bearing diameter and little with the friction area of axle sleeve, has reduced frictional loss.In addition, the double bearing support of doing of band round-ended cylinder, makes Multi-stage pump structure light and handy, compact.Between turning with round-ended cylinder and outer buttons, with the link of boards at a plurality of intervals, flowing medium sucks from the space between gusset.Therefore, horizontal type multi-stage pump axial inlet device volume of the present invention is little, lightweight, plays the effect of bearing support simultaneously, makes that multistage pump entrance point structure is light and handy compact, pivot friction area is little, and frictional loss is low.Choma place arranges wear-resistant sleeve, has improved local abrasion resistance properties.
The axle 6 of multistage pump shown in Fig. 3 rotatablely moves under motivational drive, and axle sleeve 4 and impeller, with axle 6, run-in synchronism occurs, and axle sleeve 4 is supported by sliding bearing 7 and rotates friction with sliding bearing 7 internal surfaces.During first stage impeller 14 rotation, at first stage impeller, 14 inlets form negative pressure, and fed sheet of a media is inhaled into impeller from the space between the gusset 3c of inlet means main part 3.Medium is in the interior generation centrifugal rotation motion of first stage impeller 14, and 14 pairs of media of first stage impeller do work, and energy increases, and medium enters subordinate's impeller by the guide functions of chopped-off head stator 11.Medium arrives after first stage impeller 14 outlets, and pressure increases, and due to Spielpassung between first stage impeller choma place and wear-resistant sleeve 12, the high-pressure medium of impeller outlet side leaks to the low pressure area of impeller inlet side by gap.Because gap location runner is narrow, pressure reduction is large, and working medium flow velocity is high, and medium causes severe impact to flow passage components, causes concentrated wear, at choma place, wear-resistant sleeve 12 is set, and can improve the wear resistance of structure.In pump inlet place, the space of medium between gusset 3c is inhaled into, in pump inlet neutral position, form local depression district, and the highly pressurised liquid leaking on a small quantity due to existence in first stage impeller 14 inlets, pressure is higher than pump inlet place, under pressure reduction promotes, medium leaks to perforate 3a by the gap between sliding bearing 7 and axle sleeve 4, form liquid and flow back to road, sliding bearing 7 and the frictional heat of axle sleeve 4 are taken away, play the effect of lubrication.Connecting tube 9 is connected with adapter 8, the mechanical seal leakage liquid of pump discharge end is communicated with pump inlet and forms loop, and mechanical seal is realized to lubrication effect.
Claims (7)
1. horizontal type multi-stage pump axial inlet device, it is characterized in that comprising: inlet means main part (3), rod fixing device (2), adapter (8) and wear-resistant sleeve (12), it is upper that described rod fixing device (2) and adapter (8) are fixed on inlet means main part (3), and described wear-resistant sleeve (12) is fixed on the endoporus of inlet means main part (3); Described inlet means main part (3) turns, is with round-ended cylinder (3b) and gusset (3c) to be made into integration by outer buttons, described band round-ended cylinder (3b) is positioned at the inner side that described outer buttons is turned, and described gusset (3c) is connected to described outer buttons and turns and be with between round-ended cylinder (3b).
2. horizontal type multi-stage pump axial inlet device according to claim 1, it is characterized in that: described outer buttons turn comprise suction flange (3d), cover plate (3e) and be connected to suction flange (3d) and cover plate (3e) between linkage section (3f), described band round-ended cylinder (3b) is positioned at the inner side of described linkage section (3f), and described gusset (3c) is connected between described linkage section (3f) and band round-ended cylinder (3b).
3. horizontal type multi-stage pump axial inlet device according to claim 2, is characterized in that: described rod fixing device (2) is positioned at the edge of described cover plate (3e).
4. horizontal type multi-stage pump axial inlet device according to claim 2, is characterized in that: described wear-resistant sleeve (12) is fixed on the position of the corresponding described cover plate of endoporus (3e) of described inlet means main part (3) with pin.
5. horizontal type multi-stage pump axial inlet device according to claim 2, is characterized in that: described adapter (8) is fixed on described linkage section (3f).
6. horizontal type multi-stage pump axial inlet device according to claim 1 and 2, is characterized in that: the neutral position, bottom of described band round-ended cylinder (3b) has perforate (3a).
7. the linkage structure of horizontal type multi-stage pump axial inlet device, is characterized in that comprising: chopped-off head sections (10), axle sleeve (4), first stage impeller (14), chopped-off head stator axle sleeve (13), axle (6) and inlet means main part (3), rod fixing device (2), adapter (8), wear-resistant sleeve (12);
It is upper and fixing by the nut (5) of axle (6) end that described axle sleeve (4), first stage impeller (14), chopped-off head stator axle sleeve (13) are enclosed within axle (6), and chopped-off head stator (11) is enclosed within on chopped-off head stator axle sleeve (13);
Described inlet means main part (3) turns, is with round-ended cylinder (3b) and gusset (3c) to be made into integration by outer buttons, described band round-ended cylinder (3b) is positioned at the inner side that described outer buttons is turned, described gusset (3c) is connected to described outer buttons and turns and be with between round-ended cylinder (3b), it is upper that described rod fixing device (2) and adapter (8) are fixed on inlet means main part (3), and described wear-resistant sleeve (12) is fixed on the endoporus of inlet means main part (3);
Described rod fixing device (2) is connected with described chopped-off head sections (10) by rod and fastening piece (1), on band round-ended cylinder (3b), establish sliding bearing (7), described axle sleeve (4) is supported on and on this sliding bearing (7), realizes chopped-off head stator (11), first stage impeller (14) is clamped between chopped-off head sections (10) and inlet means main part (3) and the wear-resistant sleeve (12) of the import external diameter of first stage impeller (14) described in being positioned at.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210246448.2A CN102734203B (en) | 2012-07-17 | 2012-07-17 | Horizontal multistage pump axial inlet device and connecting structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210246448.2A CN102734203B (en) | 2012-07-17 | 2012-07-17 | Horizontal multistage pump axial inlet device and connecting structure thereof |
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| CN102734203A CN102734203A (en) | 2012-10-17 |
| CN102734203B true CN102734203B (en) | 2014-08-20 |
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| CN201210246448.2A Active CN102734203B (en) | 2012-07-17 | 2012-07-17 | Horizontal multistage pump axial inlet device and connecting structure thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161751A (en) * | 2013-02-18 | 2013-06-19 | 昆明嘉和科技股份有限公司 | Petrochemical engineering process pump |
| CA3007469C (en) * | 2015-12-07 | 2021-06-29 | Fluid Handling Llc | Opposed impeller wear ring undercut to offset generated axial thrust in multi-stage pump |
| CN108443214A (en) * | 2018-05-22 | 2018-08-24 | 三联泵业股份有限公司 | A kind of vertical pump |
| CN114001033A (en) * | 2021-10-31 | 2022-02-01 | 浙江水泵总厂有限公司 | Axial liquid inlet structure and multistage centrifugal pump with same |
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| CN2304771Y (en) * | 1997-03-15 | 1999-01-20 | 沈阳化工泵制造厂 | Tight sealed multi-stage eccentric pump |
| EP1013935A1 (en) * | 1998-12-21 | 2000-06-28 | Pompes Salmson | Horizontal selfpriming pump with axial inlet |
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| CN201103568Y (en) * | 2007-09-14 | 2008-08-20 | 李正奇 | Suction segment for high-lift multi-stage centrifugal pump |
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| CN202690503U (en) * | 2012-07-17 | 2013-01-23 | 浙江佳力科技股份有限公司 | Horizontal multi-stage pump axial inlet device and connecting structure of horizontal multi-stage pump axial inlet device |
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2012
- 2012-07-17 CN CN201210246448.2A patent/CN102734203B/en active Active
Patent Citations (7)
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| CN2304771Y (en) * | 1997-03-15 | 1999-01-20 | 沈阳化工泵制造厂 | Tight sealed multi-stage eccentric pump |
| EP1013935A1 (en) * | 1998-12-21 | 2000-06-28 | Pompes Salmson | Horizontal selfpriming pump with axial inlet |
| CN2462110Y (en) * | 2000-11-28 | 2001-11-28 | 广西博士通集团有限责任公司 | Multi-stage centrifugal water pump |
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| CN102734203A (en) | 2012-10-17 |
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