CN204386895U - A kind of magnetic drives No leakage centrifugal pump - Google Patents
A kind of magnetic drives No leakage centrifugal pump Download PDFInfo
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- CN204386895U CN204386895U CN201420807805.2U CN201420807805U CN204386895U CN 204386895 U CN204386895 U CN 204386895U CN 201420807805 U CN201420807805 U CN 201420807805U CN 204386895 U CN204386895 U CN 204386895U
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- pump
- pump shaft
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- axial groove
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Abstract
The utility model relates to a kind of centrifugal pump, particularly relates to a kind of magnetic drives No leakage centrifugal pump.Comprise the pump housing, pump shaft is provided with in the described pump housing, the head of described pump shaft is provided with impeller, described pump shaft is located by bearing support mutually with the pump housing, the bearing distributed by pair of spaced between described pump shaft with bearing support is located mutually, be provided with axle sleeve between described bearing and pump shaft, be provided with metal lining between described axle sleeve and pump shaft, described bearing is located mutually by thrust ring and bearing support.A kind of magnetic drives No leakage centrifugal pump structure is compact, and be applied to medium in high temperature and temperature situation, reliability is high, and installation and repairing is convenient.
Description
Technical field
The utility model relates to a kind of centrifugal pump, particularly relates to a kind of magnetic drives No leakage centrifugal pump.
Background technique
Magnetic drives pump structure, by the pump housing, impeller, pump cover, outer magnet rotor and transmission part, interior magnet rotor, thrust ring, separation sleeve, pump shaft, axle sleeve, bearing, the compositions such as motor.Separate with non-magnetic separation sleeve between inside and outside magnet rotor, separation sleeve and pump sealing cushion for cover fastening.In being connected with impeller, magnet rotor is driven by the effect of the outer magnet rotor be connected with motor by magnetic field, thus makes pump carry out medium transport with realizing Full-sealed no-leakage.Due to its leak free feature, magnetic drive pump is widely used in the occasion of field of petrochemical industry conveying high temperature, inflammable and explosive, hypertoxic, valuable, Korrosionsmedium.
Due to magnetic drive pump inner rotor part submergence in media as well, as the support of inner rotor part, its bearing generally adopts sliding bearing.In order to improve the operational reliability of pump, the general Ceramics material of sliding bearing.The sliding bearing of stupalith needs complete pairing to use, and namely also needs stupalith with ceramic bearing to the material ground.Like this, pump shaft needs the axle sleeve installing stupalith.Axle sleeve matches with metal shaft, ensures the running accuracy of rotor.But pottery is crisp, and expansion coefficient is little, and axle sleeve will be caused by metal shaft spalling damaging when the temperature increases.And if add the gap of large shaft sleeve and axle, then the concentricity of axle sleeve and axle just can not ensure, is in eccentric state when pump rotor rotates, and produces abnormal vibration, and bearing easily damages, and pump cannot run well.And if employing soft material is filled, then its compressive strength is inadequate, cannot ensure the coaxality of axle sleeve and axle, and heatproof is not high, cannot at high temperature uses.
Summary of the invention
The utility model mainly solves the deficiencies in the prior art, provides a kind of compact structure, can at high temperature normally use, a kind of magnetic drives No leakage centrifugal pump that compression resistance is outstanding.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of magnetic drives No leakage centrifugal pump, comprise the pump housing, pump shaft is provided with in the described pump housing, the head of described pump shaft is provided with impeller, described pump shaft is located by bearing support mutually with the pump housing, and the bearing distributed by pair of spaced between described pump shaft with bearing support is located mutually, is provided with axle sleeve between described bearing and pump shaft, be provided with metal lining between described axle sleeve and pump shaft, described bearing is located mutually by thrust ring and bearing support.
As preferably, the left-hand end of described metal lining outer wall, middle-end, right-hand end are respectively equipped with fit on face outwardly, be provided with the outer non-fitting surface in inner concavity between fit on face, be provided with equally distributed axial groove in described outer non-fitting surface, described axial groove is in circumference distribution;
The left-hand end of described metal lining inwall, middle-end, right-hand end are respectively equipped with in fitting surface non-in inner concavity, in be provided with interior fitting surface in outwardly shape between non-fitting surface, be provided with equally distributed axial groove I in described interior non-fitting surface, described axial groove I is in circumference distribution;
Described fit on face is close to mutually with axle sleeve, and described interior fitting surface is close to mutually with pump shaft.
As preferably, the width of described axial groove I is greater than the width of axial groove, and described fit on face and interior fitting surface are in being dislocatedly distributed, and described outer non-fitting surface and interior non-fitting surface are in being dislocatedly distributed.
The gap of installing thin-walled metal bush is set between pump shaft and axle sleeve, for installing thin-walled metal bush; Axial direction is arranged interior fitting surface and Nei Fei fitting surface between metal lining and pump shaft, interior fitting surface tolerance of size determines to have Spielpassung or interference fit according to rotating part positioning requirements; The gap at interior non-fitting surface place is greater than the maximum swelling amount difference of pump shaft and the serviceability temperature required by Ceramic shaft sleeve material;
Axial direction is also arranged fit on face and outer non-fitting surface between metal lining and Ceramic shaft sleeve; Stagger in the axial direction in interior fitting surface between metal lining lining inner circle and pump shaft and the fit on face between metal lining cylindrical and Ceramic shaft sleeve;
The face coordinated with axle sleeve is arranged the axial groove that many circumferences are uniform for metal lining.These groove radial symmetric are arranged, are convenient to adopt Linear cut to be shaped.At the position that metal lining coordinates with pump shaft, be also provided with axial groove I, and interlaced arrangement circumferential with the axial groove on metal lining cylindrical fitting surface, to ensure the integrity of metal lining.
When temperature is raised, because in the fit on face of Ceramic shaft sleeve and metal lining and pump shaft and metal lining, fitting surface staggers, swell increment after pump shaft is heated is not directly delivered on Ceramic shaft sleeve, but cause the radial deformation of the metal lining of the thin-walled matched to cushion, meanwhile, the axial groove offered, makes metal lining originally become the dilatancy of circumferential direction in the expansion of radial direction when expanded by heating, further minimizing radial-deformation, thus can not make Ceramic shaft sleeve spalling.
Metal lining radial structure is symmetrical, and axial groove circumference is evenly distributed, and after expanded by heating, distortion evenly, therefore still can ensure the concentricity of Ceramic shaft sleeve after distortion.The fitting surface of lining and pump shaft is also provided with axial groove I, even if make to be interference fit, when lining loads, rely on the existence of groove and easy resiliently deformable between the two, at normal temperatures can light dismounting, do not need heating assembling, facilitate assembling and later repair and maintenance.
The utility model provides a kind of magnetic drives No leakage centrifugal pump, compact structure, and be applied to medium in high temperature and temperature situation, reliability is high, and installation and repairing is convenient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structure for amplifying schematic diagram in A portion in Fig. 1;
Fig. 3 is the sectional structure schematic diagram of metal lining in the utility model.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, Figure 2 and Figure 3, a kind of magnetic drives No leakage centrifugal pump, comprise the pump housing 1, pump shaft 2 is provided with in the described pump housing 1, the head of described pump shaft 2 is provided with impeller 3, described pump shaft 2 is located by bearing support 4 phase with the pump housing 1, bearing 5 phase distributed by pair of spaced between described pump shaft 2 with bearing support 4 is located, axle sleeve 6 is provided with between described bearing 5 and pump shaft 2, be provided with metal lining 7 between described axle sleeve 6 and pump shaft 2, described bearing 5 is located with bearing support 4 phase by thrust ring 8.
The left-hand end of described metal lining 7 outer wall, middle-end, right-hand end are respectively equipped with fit on face outwardly 9, the outer non-fitting surface 10 in inner concavity is provided with between fit on face 9, be provided with equally distributed axial groove 11 in described outer non-fitting surface 10, described axial groove 11 is in circumference distribution;
The left-hand end of described metal lining 7 inwall, middle-end, right-hand end are respectively equipped with in fitting surface 12 non-in inner concavity, in be provided with interior fitting surface 13 in outwardly shape between non-fitting surface 12, be provided with equally distributed axial groove I 14 in described interior non-fitting surface 12, described axial groove I 14 is in circumference distribution;
Described fit on face 9 is close to mutually with axle sleeve 6, and described interior fitting surface 13 is close to mutually with pump shaft 2.
The width of described axial groove I 14 is greater than the width of axial groove 11, and described fit on face 9 and interior fitting surface 13 are in being dislocatedly distributed, and described outer non-fitting surface 10 and interior non-fitting surface 12 are in being dislocatedly distributed.
Claims (3)
1. a magnetic drives No leakage centrifugal pump, it is characterized in that: comprise the pump housing (1), pump shaft (2) is provided with in the described pump housing (1), the head of described pump shaft (2) is provided with impeller (3), described pump shaft (2) is located by bearing support (4) mutually with the pump housing (1), the bearing (5) distributed by pair of spaced between described pump shaft (2) with bearing support (4) is located mutually, axle sleeve (6) is provided with between described bearing (5) and pump shaft (2), metal lining (7) is provided with between described axle sleeve (6) and pump shaft (2), described bearing (5) is located mutually by thrust ring (8) and bearing support (4).
2. a kind of magnetic drives No leakage centrifugal pump according to claim 1, it is characterized in that: the left-hand end of described metal lining (7) outer wall, middle-end, right-hand end are respectively equipped with fit on face outwardly (9), the outer non-fitting surface (10) in inner concavity is provided with between fit on face (9), be provided with equally distributed axial groove (11) in described outer non-fitting surface (10), described axial groove (11) is in circumference distribution;
The left-hand end of described metal lining (7) inwall, middle-end, right-hand end are respectively equipped with in fitting surface (12) non-in inner concavity, in be provided with interior fitting surface (13) in outwardly shape between non-fitting surface (12), be provided with equally distributed axial groove I (14) in described interior non-fitting surface (12), described axial groove I (14) is in circumference distribution;
Described fit on face (9) is close to mutually with axle sleeve (6), and described interior fitting surface (13) is close to mutually with pump shaft (2).
3. a kind of magnetic drives No leakage centrifugal pump according to claim 2, it is characterized in that: the width of described axial groove I (14) is greater than the width of axial groove (11), described fit on face (9) and interior fitting surface (13) are in being dislocatedly distributed, and described outer non-fitting surface (10) and interior non-fitting surface (12) are in being dislocatedly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807805.2U CN204386895U (en) | 2014-12-19 | 2014-12-19 | A kind of magnetic drives No leakage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420807805.2U CN204386895U (en) | 2014-12-19 | 2014-12-19 | A kind of magnetic drives No leakage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204386895U true CN204386895U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420807805.2U Active CN204386895U (en) | 2014-12-19 | 2014-12-19 | A kind of magnetic drives No leakage centrifugal pump |
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| CN (1) | CN204386895U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252947A (en) * | 2016-12-28 | 2018-07-06 | 上海佰诺泵阀有限公司 | The packaging type pump shaft structure of magnetic drive pump |
-
2014
- 2014-12-19 CN CN201420807805.2U patent/CN204386895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252947A (en) * | 2016-12-28 | 2018-07-06 | 上海佰诺泵阀有限公司 | The packaging type pump shaft structure of magnetic drive pump |
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