CN203856728U - Novel horizontal multistage centrifugal pump with rolling bearings - Google Patents
Novel horizontal multistage centrifugal pump with rolling bearings Download PDFInfo
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- CN203856728U CN203856728U CN201420277235.0U CN201420277235U CN203856728U CN 203856728 U CN203856728 U CN 203856728U CN 201420277235 U CN201420277235 U CN 201420277235U CN 203856728 U CN203856728 U CN 203856728U
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- bearing
- drive portion
- centrifugal pump
- angular contact
- contact ball
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Abstract
The utility model discloses a novel horizontal multistage centrifugal pump with rolling bearings. The novel horizontal multistage centrifugal pump is characterized by comprising a bearing component of a driving portion, a sealing tank of the driving portion, a suction section, a pump body, a discharge section, a sealing tank of a non-driving portion, a bearing component of the non-driving portion and a pump shaft, the bearing component of the driving portion, the sealing tank of the driving portion, the suction section, the pump body, the discharge section, the sealing tank of the non-driving portion, the bearing component of the non-driving portion and the pump shaft are sequentially connected with one another, and the bearing component of the non-driving portion comprises a bearing housing cover, a single-row cylindrical rolling bearing, an oil slinger sleeve I, an angular contact ball bearing set, a bearing gland, a locking nut, a bearing non-rotating sleeve, an oil slinger I, a bearing housing, an oil slinger sleeve II and an oil slinger II. The single-row cylindrical rolling bearing and the angular contact ball bearing set are respectively individually lubricated, and the bearing non-rotating sleeve is not radially positioned. The novel horizontal multistage centrifugal pump has the advantages that the novel horizontal multistage centrifugal pump can be easily and conveniently mounted and detached; good lubricating effects can be realized, and the novel horizontal multistage centrifugal pump is safe and reliable and can bear high residual axial force; the rolling bearings are low in cost as compared with bearing pads, and accordingly the cost can be saved.
Description
Technical field
The utility model belongs to centrifugal pump technical field, and particularly a kind of new-type rolling bearing horizontal multi-stage centrifugal pump, is mainly used in the key device in the industries such as petroleum refinement, petrochemical industry, water supply installation and electric power.
Background technique
At present, the bearing of horizontal multi-stage centrifugal pump has two kinds of structures conventionally: rolling bearing structure and sliding bearing structure.Original rolling bearing structure, lubricated and heat radiation all has certain drawback.The rotor amount of lifting of two kinds of structures is all by the adjustment that repeatedly circulates of the jackscrew of bearing housing flange plate.Install, dismantle and adjust all inconvenient.And the process of adjusting and the scraping of bearing shell have certain technical difficulty.
Model utility content
Uneven and install, dismantle inconvenient technical problem according to the bearing lubrication of above-mentioned proposition and heat radiation, and a kind of new-type rolling bearing horizontal multi-stage centrifugal pump is provided.
The technological means that the utility model adopts is as follows:
A kind of new-type rolling bearing horizontal multi-stage centrifugal pump, it is characterized in that: comprise the drive portion bearing part connecting in turn, drive portion seal case, suction casing, the pump housing, Spit Section, non-drive portion seal case, non-drive portion bearing part and pump shaft, the described pump housing is to comprise a plurality of stage casings and lay respectively at the impeller in corresponding stage casing, the multistage pump housing that stator and rotor form, rear end integral body that described stator is welded on described impeller are socketed on described pump shaft by described rotor, described non-drive portion bearing part comprises bearing box cover, single row roller bearing, disc cover I, angular contact ball bearing group, bearing gland, locking nut, bearing rotating prevention sleeve, disc I, bearing housing, disc cover II and disc II,
Described pump shaft comprises the stepped section that is positioned at described bearing housing and the section I that is positioned at non-drive portion seal case, and the maximum diameter of described stepped section is less than the diameter of described section I;
On described stepped section, be socketed with in turn described single row roller bearing, described disc cover I, described angular contact ball bearing group, described disc cover II and described locking nut, the one end that is the close described section I of described stepped section is socketed with described single row roller bearing in turn to one end away from described section I of described stepped section, described disc cover I, described angular contact ball bearing group, described disc cover II and described locking nut;
In described bearing housing, be provided with baffle plate, described baffle plate is between described disc cover II and described angular contact ball bearing group, and described stepped section is through described baffle plate;
The inner ring front end of described single row roller bearing is fixed by the shaft shoulder between described stepped section and described section I, the outer ring of described single row roller bearing is fixed by described bearing housing, described bearing housing has limited moving radially of described single row roller bearing, described single row roller bearing bears radial load, also be radial bearing, described disc cover I is provided with described disc I, the lubricated described disc I by right side of described radial bearing is lubricated, described disc cover II is provided with described disc II, the outer ring of described angular contact ball bearing group is provided with described bearing rotating prevention sleeve, the front end of described bearing rotating prevention sleeve is fixed by described baffle plate, the rear end of described bearing rotating prevention sleeve is fixed by described bearing gland, described bearing rotating prevention sleeve is without radial location, because the principle of multistage pump Equilibrator is transient equiliblium, therefore pump can produce micro-axial float at operation process rotor and bearing thereof, bearing rotating prevention sleeve is in order to prevent that the frictional force after positioning compression from hindering the axial float of rotor and bearing thereof without the object of radial location, thereby avoid causing bearing heating because of excessive thrust load, and the radial location of rotor and radial load bear main dependence single row roller bearing above, the remaining thrust load that the object of angular contact ball bearing group is only fallen for bearing Equilibrator lack of equilibrium, therefore need not radial location.If radial location compresses bearing rotating prevention sleeve outer ring, frictional force will hinder the free play of rotor axial, affect Equilibrator and normally work.It is exactly for axial float space is provided to rotor that small axial clearance is left in bearing gland and angular contact ball bearing group outer ring.Described angular contact ball bearing group is born thrust load, and axial hydraulic thrust, is also thrust-bearing, and its lubricated described disc I by both sides and described disc II are lubricated;
Further, described bearing box cover comprises take upper bearing case lid and the lower bearing case lid that place, the medial axis horizontal plane of described pump shaft separates up and down as benchmark, described bearing housing comprises take upper bearing casing and the lower bearing casing that place, the medial axis horizontal plane of described pump shaft separates up and down as benchmark, be that described bearing box cover and described bearing housing be take pump spindle center line place horizontal plane as basis point half processing, described bearing box cover is fixedly connected with centrifugal pump main body by opening face flange with described bearing housing, be that described bearing box cover and described bearing housing are located by the taper pin of opening on face flange, and by opening the screw on face flange, nut is connected with centrifugal pump main body,
Further, between described drive portion bearing part and described drive portion seal case, by eccentric seam I, be connected; Between described non-drive portion seal case and described non-drive portion bearing part, by eccentric seam II, be connected.Offset calculates and obtains according to the natural bow of rotor, and progression is different, and offset is also different.This structure is installed and is adjusted faster, more conveniently, has avoided by jackscrew, adjusting or the technical ability requirement of scraping bearing shell in the past, and eccentric processing structure is more suitable for the more horizontal type multi-stage pump of progression.
Further, described angular contact ball bearing group comprises angular contact ball bearing I and the angular contact ball bearing II of paired mounting back-to-back.
The utlity model has following advantage:
1, because bearing box cover and bearing housing adopt respectively minute half processing, so install, dismounting is more simple and convenient; Radial bearing and thrust-bearing are lubricated separately, high lubricating effect; Bearing rotating prevention sleeve, without radial location, can bear larger residual axial force; And rolling bearing is cheap compared with bearing shell, cost-saving.
2, between drive portion bearing part and drive portion seal case, by eccentric seam, be connected, between non-drive portion seal case and non-drive portion bearing part, by eccentric seam, be connected, make install to adjust faster, more convenient, avoided by jackscrew, adjusting or the technical ability requirement of scraping bearing shell in the past.Eccentric processing structure is more suitable for the more horizontal type multi-stage pump of progression.
The utility model can extensively be promoted in fields such as centrifugal pump technical fields for the foregoing reasons.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is a kind of new-type rolling bearing horizontal multi-stage centrifugal pump schematic diagram of the present utility model.
Fig. 2 is the non-drive portion bearing part schematic diagram of a kind of new-type rolling bearing horizontal multi-stage centrifugal pump of the present utility model.
Fig. 3 is Fig. 2 decomposing schematic representation.
Wherein, 1, drive portion bearing part 2, drive portion seal case 3, suction casing 4, stage casing 5, stator 6, rotor 7, Spit Section 8, non-drive portion seal case 9, non-drive portion bearing part 10, pump shaft 11, impeller 901, bearing box cover 902, single row roller bearing 903, disc cover I 904, angular contact ball bearing group 905, bearing gland 906, locking nut 907, bearing rotating prevention sleeve 908, disc I 909, bearing housing 910, disc cover II 911, disc II 1001, stepped section 1002, section I.
Embodiment
As shown in Figure 1-Figure 3, a kind of new-type rolling bearing horizontal multi-stage centrifugal pump, comprise pump shaft 10 and along the drive portion bearing part 1 axially connecting successively of described pump shaft 10, drive portion seal case 2, suction casing 3, the pump housing, Spit Section 7, non-drive portion seal case 8 and non-drive portion bearing part 9, the described pump housing is eight grades of pump housings, comprise stage casing 4, impeller 11 and stator 5, described stator 5 and described impeller 11 are socketed on described pump shaft 10 by rotor 6, described non-drive portion bearing part 9 comprises a minute semi-finished bearing box cover 901, single row roller bearing 902, disc cover I 903, angular contact ball bearing group 904, bearing gland 905, locking nut 906, bearing rotating prevention sleeve 907, disc I 908, divide semi-finished bearing housing 909, disc cover II 910 and disc II 911.Described angular contact ball bearing group 904 comprises angular contact ball bearing I and the angular contact ball bearing II of paired mounting back-to-back.Described pump shaft 10 comprises the stepped section 1001 that is positioned at described bearing housing 909 and the section I 1002 that is positioned at non-drive portion seal case 8, and the maximum diameter of described stepped section 1001 is less than described section I 1002, in described bearing housing 909, be provided with baffle plate, described baffle plate is between described disc cover II 910 and described angular contact ball bearing group 904, and described stepped section 1001 is through described baffle plate, described single row roller bearing 902, described disc cover I 903, described angular contact ball bearing group 904, described disc cover II 910 and described locking nut 906 are socketed on described stepped section 1001 successively, the inner ring front end of described single row roller bearing 902 is fixed by the shaft shoulder between described stepped section 1001 and described section I 1002, the outer ring of described single row roller bearing 902 is fixing by described bearing housing 909, described bearing housing has limited moving radially of described single row roller bearing, the inner ring rear end of described single row roller bearing 902 is fixed by the front end of described disc cover I 903, the rear end of described disc cover I 903 is fixed by the front end of described baffle plate, described disc cover I 903 is provided with described disc I 908, described single row roller bearing 902 bears radial load, also be radial bearing, described disc cover I 903 is provided with described disc I 908, the outer ring of described angular contact ball bearing group 904 is provided with described bearing rotating prevention sleeve 907, the front end of described bearing rotating prevention sleeve 907 is fixed by the rear end of described baffle plate, the rear end of described bearing rotating prevention sleeve 907 is fixing by described bearing gland 905, described bearing rotating prevention sleeve 907 is without radial location, the inner ring front end of described angular contact ball bearing group 904 is fixed by described baffle plate, the inner ring rear end of described angular contact ball bearing group 904 is fixed by the front end of described disc cover II 910, described disc cover II 910 is provided with described disc II 911, described angular contact ball bearing group 904 is born thrust load, it is axial hydraulic thrust, also be thrust-bearing, its lubricated described disc I 908 by both sides and described disc II 911 are lubricated, the rear end of described disc cover II 910 is fixing by described locking nut 906, in described bearing housing 909, store lubricant oil, the liquid level that the lower end of the lower end of described disc I 908 and described disc II 911 lays respectively at described lubricant oil once.
Between described drive portion bearing part 1 and described drive portion seal case 2, by eccentric seam I 12, be connected; Between described non-drive portion seal case 8 and described non-drive portion bearing part 9, by eccentric seam II 13, be connected.According to the amount of deflection result of calculation of rotor, the offset at this place is designed to 0.3mm.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; according to the technical solution of the utility model and model utility design thereof, be equal to replacement or changed, within all should being encompassed in protection domain of the present utility model.
Claims (4)
1. a new-type rolling bearing horizontal multi-stage centrifugal pump, it is characterized in that: comprise the drive portion bearing part (1) connecting in turn, drive portion seal case (2), suction casing (3), the pump housing, Spit Section (7), non-drive portion seal case (8), non-drive portion bearing part (9) and pump shaft (10), described non-drive portion bearing part comprises bearing box cover (901), single row roller bearing (902), disc cover I (903), angular contact ball bearing group (904), bearing gland (905), locking nut (906), bearing rotating prevention sleeve (907), disc I (908), bearing housing (909), disc cover II (910) and disc II (911),
Described pump shaft (10) comprises the stepped section (1001) that is positioned at described bearing housing (9) and the section I (1002) that is positioned at described non-drive portion seal case (8), and the maximum diameter of described stepped section (1001) is less than the diameter of described section I (1002);
On described stepped section (1001), be socketed with in turn described single row roller bearing (902), described disc cover I (903), described angular contact ball bearing group (904), described disc cover II (910) and described locking nut (906);
Described bearing housing is provided with baffle plate in (909), and described baffle plate is positioned between described disc cover II (910) and described angular contact ball bearing group (904);
The inner ring front end of described single row roller bearing (902) is fixed by the shaft shoulder between described stepped section (1001) and described section I (1002), the outer ring of described single row roller bearing (902) is fixing by described bearing housing (909), described disc cover I (903) is provided with described disc I (908), described disc cover II (910) is provided with described disc II (911), the outer ring of described angular contact ball bearing group (904) is provided with described bearing rotating prevention sleeve (907), the front end of described bearing rotating prevention sleeve (907) is fixed by described baffle plate, the rear end of described bearing rotating prevention sleeve (907) is fixing by described bearing gland (905).
2. a kind of new-type rolling bearing horizontal multi-stage centrifugal pump according to claim 1, it is characterized in that: described bearing box cover (901) comprises take upper bearing case lid and the lower bearing case lid that place, the medial axis horizontal plane of described pump shaft (10) separates up and down as benchmark, described bearing housing (909) comprises take upper bearing casing and the lower bearing casing that place, the medial axis horizontal plane of described pump shaft (10) separates up and down as benchmark, and described bearing box cover (901) is fixedly connected with centrifugal pump main body by opening face flange with described bearing housing (909).
3. a kind of new-type rolling bearing horizontal multi-stage centrifugal pump according to claim 1 and 2, is characterized in that: between described drive portion bearing part (1) and described drive portion seal case (2), by eccentric seam I (12), be connected; Between described non-drive portion seal case (8) and described non-drive portion bearing part (9), by eccentric seam II (13), be connected.
4. a kind of new-type rolling bearing horizontal multi-stage centrifugal pump according to claim 1 and 2, is characterized in that: described angular contact ball bearing group (904) comprises angular contact ball bearing I and the angular contact ball bearing II of paired mounting back-to-back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277235.0U CN203856728U (en) | 2014-05-27 | 2014-05-27 | Novel horizontal multistage centrifugal pump with rolling bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277235.0U CN203856728U (en) | 2014-05-27 | 2014-05-27 | Novel horizontal multistage centrifugal pump with rolling bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856728U true CN203856728U (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420277235.0U Active CN203856728U (en) | 2014-05-27 | 2014-05-27 | Novel horizontal multistage centrifugal pump with rolling bearings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856728U (en) |
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2014
- 2014-05-27 CN CN201420277235.0U patent/CN203856728U/en active Active
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