CN102734203A - 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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- CN102734203A CN102734203A CN2012102464482A CN201210246448A CN102734203A CN 102734203 A CN102734203 A CN 102734203A CN 2012102464482 A CN2012102464482 A CN 2012102464482A CN 201210246448 A CN201210246448 A CN 201210246448A CN 102734203 A CN102734203 A CN 102734203A
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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 is 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 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 mainly is a upper inlet upper outlet structure, and the multistage pump of this structure is in when work, fed sheet of a media in pump the deflection of overall flow direction nearly 180 °, flow losses are very big.The embrane method desalination of sea water that develops rapidly in recent years is with the horizontal type multi-stage pump forms that axially suck the top outlet that adopt more, the main flow direction nearly deflection of fed sheet of a media in pump 90 °, flow losses decrease.In the horizontal more piece pump of disclosed at home at present axial inlet, the entrance point structure mainly contains two kinds of forms, and a kind of is that bearing is arranged on after the 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 big; And occupy bigger axial distance, increased the bulkiness of multistage pump.Another kind of entrance point sliding bearing is arranged on the first stage impeller choma outside, with the choma Spielpassung.Because first stage impeller choma diameter is big, must adopt large diameter sliding bearing to cooperate with it, has increased the friction area of sliding bearing and choma, leakage rate is increased; In order to cooperate with bearing, 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 the axial inlet device is heavy, the sliding bearing friction area is big in the axial inlet horizontal type multi-stage pump at present.。
Summary of the invention
The technical problem that the present invention will solve and the technical assignment of proposition are to overcome the defective that the axial inlet device is heavy, the sliding bearing friction area is big 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.
For reaching the object of the invention; The technological scheme that horizontal type multi-stage pump axial inlet device of the present invention is adopted is: it comprises: inlet means main part, rod fixing device, adapter and wear-resistant sleeve; Described rod fixing device and adapter are fixed on the inlet means main part, and described wear-resistant sleeve is fixed on the endoporus of inlet means main part.
As the 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 band round-ended cylinder is positioned at the inboard that said outer buttons is turned, and described gusset is connected described outer buttons and turns and be with between the round-ended cylinder.
As the optimization technique measure; Described outer buttons turn comprise suction flange, cover plate and be connected suction flange and cover plate between linkage section; Described band round-ended cylinder is positioned at the inboard of said linkage section, and described gusset is connected between described linkage section and the band round-ended cylinder.
As the optimization technique measure, described rod fixing device is positioned at the edge of said cover plate.
As the optimization technique measure, described wear-resistant sleeve is with the position of dowel fixes at the corresponding said cover plate of endoporus of said inlet means main part.
As the optimization technique measure, described adapter is fixed on the described linkage section.
As the optimization technique measure, the neutral position, bottom of said band round-ended cylinder has perforate.
For reaching the object of the invention, the technological scheme that linkage structure adopted of horizontal type multi-stage pump axial inlet device of the present invention 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 guide vane teunnion cover are enclosed within axle and go up and fixed by the nut of shaft end, and the chopped-off head stator is enclosed within the chopped-off head guide vane teunnion and puts;
Described inlet means main part turns, is with round-ended cylinder and gusset to be made into integration by outer buttons; Described band round-ended cylinder is positioned at the inboard that said outer buttons is turned; Described gusset is connected described outer buttons and turns and be with between the round-ended cylinder; Described rod fixing device and adapter are fixed on the 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 through rod and fastening piece; Establish sliding bearing on the band round-ended cylinder, described axle sleeve is supported on and realizes the chopped-off head stator on this sliding bearing, first stage impeller is clamped between chopped-off head sections and the inlet means main part and the import external diameter of first stage impeller is positioned at described wear-resistant sleeve.
The invention has the beneficial effects as follows: volume is little, in light weight, plays the effect of bearing support simultaneously, makes that multistage pump entrance point structure is light and handy compact, the pivot friction area is little, and frictional loss is low.The choma place is provided with wear-resistant sleeve, has improved local abrasion resistance properties.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is that A-A among Fig. 1 is to sectional view;
Fig. 3 is assemblied in the schematic representation on the chopped-off head sections with structure shown in Figure 1;
Label declaration among the figure:
1-rod and fastening piece, 2-rod fixing device, 3-inlet means main part, the 4-axle sleeve, the 5-nut, the 6-axle, the 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;
The 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 is further specified.
Horizontal type multi-stage pump axial inlet device of the present invention; Like Fig. 1, shown in 2; It comprises: inlet means main part 3, rod fixing device 2, adapter 8 and wear-resistant sleeve 12, and rod fixing device 2 is fixed on the inlet means main part 3 with adapter 8, and wear-resistant sleeve 12 is fixed on the endoporus of inlet means main part 3.Adapter 8 is used for the lubricated cooling for reflux pipeline connection 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, and band round-ended cylinder 3b is positioned at the inboard that outer buttons is turned, and gusset 3c is connected outer buttons and turns and be with between the round-ended cylinder 3b.Outer buttons turn comprise the suction flange 3d that is used for being connected, be used for the cover plate 3e that is connected with the chopped-off head sections and be connected suction flange 3d with inlet ductwork and cover plate 3e between linkage section 3f; Band round-ended cylinder 3b is positioned at the inboard of linkage section 3f, and gusset 3c is connected between linkage section 3f and the band round-ended cylinder 3b.Rod fixing device 2 is positioned at the edge of cover plate 3e, is used for fixing rod.Wear-resistant sleeve 12 usefulness dowel fixes are in the position of the corresponding cover plate 3e of endoporus of inlet means main part 3.Taking over 8 is fixed on the linkage section 3f.The neutral position, bottom of band round-ended cylinder 3b has perforate 3a, is used for cycle sliding dynamic bearing cooling and lubricating medium.
The linkage structure of horizontal type multi-stage pump axial inlet device of the present invention comprises: 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 the axle 6 and by the nut 5 of axle 6 ends and fix, and chopped-off head stator 11 is enclosed within on the 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; Band round-ended cylinder 3b is positioned at the inboard that outer buttons is turned; Gusset 3c is connected outer buttons and turns and be with between the round-ended cylinder 3b; Rod fixing device 2 is fixed on the inlet means main part 3 with adapter 8, and wear-resistant sleeve 12 is fixed on the endoporus of inlet means main part 3;
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 the multistage pump structure light and handy, compact.Gusset with a plurality of intervals between being with round-ended cylinder and outer buttons being turned is connected, and flowing medium sucks from the space between the gusset.Therefore, horizontal type multi-stage pump axial inlet device volume of the present invention is little, in light weight, plays the effect of bearing support simultaneously, makes that multistage pump entrance point structure is light and handy compact, the pivot friction area is little, and frictional loss is low.The choma place is provided with wear-resistant sleeve, has improved local abrasion resistance properties.
The axle 6 of multistage pump shown in Figure 3 rotatablely moves under motivational drive, and axle sleeve 4 and impeller with axle 6 run-in synchronism take place, and axle sleeve 4 rotates friction by sliding bearing 7 supportings and with sliding bearing 7 internal surfaces.During first stage impeller 14 rotations, form negative pressure in first stage impeller 14 inlets, fed sheet of a media is inhaled into impeller from the space between the gusset 3c of inlet means main part 3.Centrifugal rotatablely moving takes place in medium in first stage impeller 14,14 pairs of medium actings of first stage impeller, and energy increases, and medium gets into subordinate's impeller through the guide functions of chopped-off head stator 11.After medium arrived first stage impeller 14 outlets, pressure increased, because Spielpassung between first stage impeller choma place and the wear-resistant sleeve 12, the high-pressure medium of impeller outlet side leaks through the low pressure area of gap to the impeller inlet side.Because the gap location runner is narrow, pressure reduction is big, and the working medium flow velocity is high, and medium causes severe impact to flow passage components, causes concentrated wear, at the choma place wear-resistant sleeve 12 is set, and can improve the wear resistance of structure.In pump inlet place, after medium is inhaled into from the space between the gusset 3c, form the local depression district in the pump inlet neutral position; And in first stage impeller 14 inlets owing to there is the highly pressurised liquid of small leakage, pressure is higher than pump inlet place, under pressure reduction promotes; Medium leaks to perforate 3a through the gap between sliding bearing 7 and the axle sleeve 4; Form the flow loop, the sliding bearing 7 and the frictional heat of axle sleeve 4 are taken away, play the effect of lubricated cooling.Connecting tube 9 with take over 8 and be connected, the mechanical seal leakage liquid of pump discharge end is communicated with pump inlet and forms the loop, cooling action is lubricated in the mechanical seal realization.
Claims (8)
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); Described rod fixing device (2) and adapter (8) are fixed on the inlet means main part (3), and described wear-resistant sleeve (12) is fixed on the endoporus of inlet means main part (3).
2. horizontal type multi-stage pump axial inlet device according to claim 1; It is characterized in that: 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 inboard that said outer buttons is turned, and described gusset (3c) is connected described outer buttons and turns and be with between the round-ended cylinder (3b).
3. horizontal type multi-stage pump axial inlet device according to claim 2; It is characterized in that: described outer buttons turn comprise suction flange (3d), cover plate (3e) and be connected suction flange (3d) and cover plate (3e) between linkage section (3f); Described band round-ended cylinder (3b) is positioned at the inboard of said linkage section (3f), and described gusset (3c) is connected between described linkage section (3f) and the band round-ended cylinder (3b).
4. horizontal type multi-stage pump axial inlet device according to claim 3 is characterized in that: described rod fixing device (2) is positioned at the edge of said cover plate (3e).
5. horizontal type multi-stage pump axial inlet device according to claim 3 is characterized in that: described wear-resistant sleeve (12) is with the position of dowel fixes at the corresponding said cover plate of endoporus (3e) of said inlet means main part (3).
6. horizontal type multi-stage pump axial inlet device according to claim 3 is characterized in that: described adapter (8) is fixed on the described linkage section (3f).
7. according to claim 2 or 3 described horizontal type multi-stage pump axial inlet devices, it is characterized in that: the neutral position, bottom of said band round-ended cylinder (3b) has perforate (3a).
8. 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);
Described axle sleeve (4), first stage impeller (14), chopped-off head stator axle sleeve (13) are enclosed within axle (6) and upward and by the nut (5) of axle (6) end fix, and chopped-off head stator (11) is enclosed within on the 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 inboard that said outer buttons is turned; Described gusset (3c) is connected described outer buttons and turns and be with between the round-ended cylinder (3b); Described rod fixing device (2) and adapter (8) are fixed on the 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) through rod and fastening piece (1); Establish sliding bearing (7) on the band round-ended cylinder (3b), described axle sleeve (4) is supported on the last realization of this sliding bearing (7) chopped-off head stator (11), first stage impeller (14) is clamped between chopped-off head sections (10) and the inlet means main part (3) and the import external diameter of first stage impeller (14) is positioned at described wear-resistant sleeve (12).
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 |
|---|---|---|---|
| CN201210246448.2A CN102734203B (en) | 2012-07-17 | 2012-07-17 | Horizontal multistage pump axial inlet device and connecting structure thereof |
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| Publication Number | Publication Date |
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| CN102734203A true CN102734203A (en) | 2012-10-17 |
| CN102734203B 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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Cited By (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 |
| CN108443214A (en) * | 2018-05-22 | 2018-08-24 | 三联泵业股份有限公司 | A kind of vertical pump |
| CN108496010A (en) * | 2015-12-07 | 2018-09-04 | 流体处理有限责任公司 | Opposed type impeller abrasion-proof ring for offsetting the axial thrust generated in multistage pump is undercut |
| WO2023070766A1 (en) * | 2021-10-31 | 2023-05-04 | 浙江水泵总厂有限公司 | Axial liquid intake structure and multi-stage centrifugal pump having same |
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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
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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 |
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Cited By (5)
| 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 |
| CN108496010A (en) * | 2015-12-07 | 2018-09-04 | 流体处理有限责任公司 | Opposed type impeller abrasion-proof ring for offsetting the axial thrust generated in multistage pump is undercut |
| CN108496010B (en) * | 2015-12-07 | 2021-04-02 | 流体处理有限责任公司 | Opposed impeller wear ring undercut for counteracting axial thrust generated in a multistage pump |
| CN108443214A (en) * | 2018-05-22 | 2018-08-24 | 三联泵业股份有限公司 | A kind of vertical pump |
| WO2023070766A1 (en) * | 2021-10-31 | 2023-05-04 | 浙江水泵总厂有限公司 | Axial liquid intake structure and multi-stage centrifugal pump having same |
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| CN102734203B (en) | 2014-08-20 |
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