CN205331042U - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- CN205331042U CN205331042U CN201620070578.9U CN201620070578U CN205331042U CN 205331042 U CN205331042 U CN 205331042U CN 201620070578 U CN201620070578 U CN 201620070578U CN 205331042 U CN205331042 U CN 205331042U
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- China
- Prior art keywords
- impeller
- overcoat
- pump
- inner sleeve
- endotheca
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Abstract
The utility model discloses a centrifugal pump belongs to fluid machine design field, aims at providing the centrifugal pump that can lock the impeller, and its technical scheme main points are centrifugal pump, contain the pump body, impeller, pump cover, be provided with transversal arrangement's pivot in the pump body, the impeller passes through the parallel key and is connected with the pivot, the impeller both sides are equipped with the sealing ring, the impeller both sides are equipped with the impeller baffle along the pivot, one side that the impeller was kept away from to the impeller baffle is equipped with locking device, locking device contains the endotheca, the endotheca is equipped with the arch along the axis vertical direction, the endotheca is equipped with the overcoat outward, be equipped with compression spring along the endotheca axis direction between arch and overcoat, the endotheca inlays in one side that the spring was kept away from to the arch and is equipped with a plurality of steel balls, toper cover in being equipped with between endotheca and the overcoat, interior toper cover is with steel ball in close contact with and one end and protruding contact, the endotheca is kept away from overcoat one end and is equipped with and draws the cap.
Description
Technical field
This utility model relates to centrifugal pump mechanical field, particularly to a kind of centrifugal pump。
Background technology
Centrifugal pump utilizes impeller to rotate and make water generation centrifugal motion carry out work。Water pump is before activation, it is necessary to makes to be full of in pump case and suction hose water, then starts motor, make pump shaft impeller and water do high speed rotary motion, water generation centrifugal motion, be thrown toward impeller outer edge, through the setting-out pipeline of the runner inflow water pump of volute pump case。
Application number be 201520003204.0 Chinese patent disclose a kind of single-stage double-suction centrifugal pump, it includes the pump housing, wherein, being provided with the rotating shaft of lateral arrangement in the pump housing, the middle part of rotating shaft is provided with jut, and jut place is provided with around the rotating shaft impeller of a week, impeller and jut are at rotating shaft double suction mouth formed below, being provided with double suction sealing ring on double suction mouth, the pump housing between double suction mouth is provided with discharge opening, discharge opening is connected with the suction chamber in the pump housing by double suction mouth；The pump housing is provided with pump cover, is used for sealing the pump housing。Make centrifugal pump intake, discharge opening all in the lower section of the axial line of rotating shaft, simplify the frame for movement of centrifugal pump of the prior art, make all parts more compact, and then extend the service life of centrifugal pump, if but impeller setting-up eccentricity or impeller loosen and cause impeller vertical not concentric, make impeller port ring and pump chamber choma wearing clearance quantitative change big, pump shaft is caused to damage and impeller bore wear, and this single-stage double-suction centrifugal pump can not regulate the position of impeller, and fastening impeller is not allowed to condition in rotating shaft and loosens。
Utility model content
For prior art exist deficiency, the purpose of this utility model be in that provide a kind of can impeller locking to avoid the centrifugal pump of impeller eccentric wear。
For achieving the above object, this utility model provides following technical scheme: a kind of centrifugal pump, comprise the pump housing, impeller, pump cover, the rotating shaft of lateral arrangement it is provided with in the described pump housing, described impeller is connected with rotating shaft key, described impeller both sides are provided with sealing ring, described impeller both sides are provided with impeller baffle plate along rotating shaft, described impeller baffle plate is provided with locking device away from the side of impeller, described locking device comprises inner sleeve, described inner sleeve is provided with projection along axis vertical direction, described inner sleeve is externally provided with overcoat, described protruding and outer inner room is provided with compression compression spring along inner sleeve axis direction, it is enclosed within the protruding side away from compression spring in described and is embedded with some steel balls, inner conical set it is provided with between described inner sleeve and overcoat, described inner conical set and steel ball close contact and one end and projection contacts, described inner sleeve is provided with away from overcoat one end and draws cap。
By adopting technique scheme, locking device is locked when impeller moves to certain position, impeller is avoided to loosen under the duty of rotating shaft high speed rotating, cause that impeller and the pump housing are directly stuck, locking device adopts steel ball and inner conical set to realize reverse self-locking, during axial locking object, this device inner conical is overlapped end and is enclosed within axle, directly inwardly promote overcoat, whole device can be made to move along axle, till compression object, it is suitable for frequently dismounting and axially adjustable and that reliable lock is higher locking device。
This utility model is further arranged to: described impeller baffle plate and impeller contact site are arranged with tube bank。
By adopting technique scheme, tube bank makes impeller baffle plate and impeller firm contact, it is to avoid enters impurity between impeller baffle plate and impeller and causes that impeller location is inaccurate。
This utility model is further arranged to: the described pump housing and be coated with scaling prevention corrosion resistant dope layer in pump cover runner, and described pump housing lower end is provided with reinforcement。
By adopting technique scheme, water is high speed rotating inside pump, long-time water contacts with pump can corrode pump inner lead, and fouling hinders the rotation of pump, scaling prevention corrosion resistant coating prevents the corrosion of water channel from producing with the phenomenon of easy fouling, on the pump housing, the design of reinforcement ensures pump housing rigidity so that operate steadily, reliably。
This utility model is further arranged to: described rotating shaft two ends are provided with bearing, axle sleeve and bearing interstage sleeve it is arranged with between described overcoat and bearing, described axle sleeve is provided with stairstepping labyrinth seal parts near the one end for connecting shaft coupling, and described axle sleeve is externally provided with the groove coordinated with stairstepping labyrinth seal parts。
By adopting technique scheme, quality of cooling water is required relatively low by stairstepping labyrinth seal, and it is little to unload flow, and the vibrations of countershaft are insensitive, long service life。
Compared with prior art, this utility model has the advantages that impeller is fixed by locking device by self-locking when impeller is adjusted to suitable position, it is ensured that pump is impeller and the gap of the pump housing in running, makes pump better run。
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of centrifugal pump；
Fig. 2 is the front view of the locking device of a kind of centrifugal pump；
Fig. 3 is the sectional view of the locking device of a kind of centrifugal pump；
Fig. 4 is the partial enlarged drawing of the locking device of a kind of centrifugal pump。
In figure, 1, pump cover；2, impeller；3, impeller baffle plate；4, locking device；5, tube bank；6, bearing；7, bearing body part；8, the pump housing；9, sealing ring；10, rotating shaft；11, cap is drawn；12, inner sleeve；13, overcoat；14, compression spring；15, protruding；16, inner conical set；17, steel ball, 18, stairstepping labyrinth seal parts；19, axle sleeve；20, bearing interstage sleeve；21, scaling prevention corrosion resistant dope layer；22, reinforcement；23, stairstepping is protruding。
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail。
A kind of centrifugal pump, comprise the pump housing 8, impeller 2, pump cover 1, the rotating shaft 10 of lateral arrangement it is provided with in the described pump housing 8, described impeller 2 is connected with rotating shaft 10 key, described impeller 2 both sides are provided with sealing ring 9, described impeller 2 both sides are provided with impeller baffle plate 3 along rotating shaft 10, described impeller baffle plate 3 is provided with locking device 4 away from the side of impeller 2, described locking device 4 comprises inner sleeve 12, described inner sleeve 12 is provided with protruding 15 along axis vertical direction, described inner sleeve 12 is externally provided with overcoat 13, it is provided with compression spring 14 along inner sleeve 12 axis direction between described protruding 15 and overcoat 13, described inner sleeve 12 is embedded with some steel balls 17 protruding 15 away from the side compressing spring, inner conical set 16 it is provided with between described inner sleeve 12 and overcoat 13, described inner conical set 16 is in close contact with steel ball 17 and one end contacts with projection 15, described inner sleeve 12 is provided with away from overcoat 13 one end and draws cap 11。
The present embodiment middle period wheel baffle plate 3 is arranged with tube bank 5 with impeller 2 contact site, and tube bank 5 makes impeller baffle plate 3 and impeller 2 firm contact, it is to avoid enters impurity between impeller baffle plate 3 and impeller 2 and causes that impeller 2 location is inaccurate。
The pump housing 8 described in the present embodiment and be coated with a kind of scaling prevention corrosion resistant coating in pump cover 1 runner, described scaling prevention corrosion resistant coating includes epoxy resin, novolac epoxy resin, methyl methacrylate, styrene, graphite, polyamide, improve the adhesive force of epoxy resin corrosion resistant coating, improve corrosion resistance, and the phenomenon of easily fouling produces after preventing spraying, the described pump housing 8 is provided with reinforcement 22, it is ensured that the pump housing 8 rigidity so that operate steadily, reliably。
The two ends of rotating shaft 10 described in the present embodiment are provided with bearing 6, axle sleeve 19 and bearing interstage sleeve 20 it is arranged with between described overcoat 13 and bearing 6, described axle sleeve 19 is provided with stairstepping labyrinth seal parts 18 near the one end for connecting shaft coupling, described axle sleeve 19 is externally provided with the stairstepping projection 23 coordinated with stairstepping labyrinth seal parts 18, quality of cooling water is required relatively low by stairstepping labyrinth seal, and it is little to unload flow, the vibrations of countershaft 10 are insensitive, long service life。
During the present embodiment work, the principle of locking device 4 is: when mounted, rotating shaft 10 is installed impeller 2 and impeller baffle plate 3 successively, by the impeller baffle plate 3 of mobile impeller 2 both sides, impeller 2 is regulated to correct position, then the inner sleeve 12 of locking device 4 is enclosed within rotating shaft 10, make its inner conical set 16 towards impeller baffle plate 3, then overcoat 13 is promoted towards impeller baffle plate 3 direction, the compression spring 14 being now located between protruding 15 and overcoat 13 is subject to External Force Acting and adds elastic force, resilient force is in protruding 15, and protruding 15 contact with inner conical set 16, and then make inner conical set 16 move to impeller 2 direction together with overcoat 13, make steel ball 17 overlap 16 with inner conical to separate, now steel ball 17 and rotating shaft 10 produces to slide, inner sleeve 12 is moved along axle, till compression object, unclamp overcoat 13, the compression spring force of compression spring 14 is by overcoat 13 and inner conical set 16 reset, steel ball 17 and inner conical surface is made to keep in touch, now steel ball 17 and inner conical set 16 formation self-locking, on axle, arbitrary position-reversed draws overcoat 13, this device all can not be made to produce reversely mobile。Main overcoat 13 is fixed with hands during dismounting, another hands draws cap 11 to away from impeller 2 direction pull-out annular, owing to annular draws cap 11 to be located in inner sleeve 12, therefore inner sleeve 12 is to when moving away from impeller 2 direction, steel ball 17 overlaps 16 with inner conical and separates, to when pulling annular to draw cap 11 away from impeller 2 direction, steel ball 17 and rotating shaft 10 produce to slide thus inner sleeve 12 reversely remove rotating shaft 10, locking device 4 is arranged on the both sides impeller locking 2 of impeller baffle plate 3, now impeller 2 is fixed completely, ensure that stablizing of operation, compression spring 14 makes steel ball 17 and inner conical surface keep in touch in locking device 4, and produce suitable precompression asking of the two, this avoids locking device 4 in use, because there is gap between steel ball 17 and inner conical surface, and can not and the possibility of position locking, when it also avoid axial force instability simultaneously, steel ball 17 and inner conical surface Intermittent Contact, thus causing that steel ball 17 progressively retreats, make the possibility that locking was lost efficacy。
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in right of the present utility model。
Claims (4)
1. a centrifugal pump, comprise the pump housing (8), impeller (2), pump cover (1), the rotating shaft (10) of lateral arrangement it is provided with in the described pump housing (8), described impeller (2) is connected with rotating shaft (10) key, described impeller (2) both sides are provided with sealing ring (9), it is characterized in that: described impeller (2) both sides are provided with impeller baffle plate (3) and are set in rotating shaft (10), described impeller baffle plate (3) is provided with locking device (4) away from the side of impeller (2), described locking device (4) comprises inner sleeve (12), described inner sleeve (12) is provided with projection (15) along axis vertical direction, described inner sleeve (12) is externally provided with overcoat (13), described inner sleeve (12) is arranged with compression spring (14), conflict with overcoat (13) in one end of described compression spring (14), the other end is conflicted with protruding (15), described inner sleeve (12) is embedded with some steel balls (17) in protruding (15) away from the side compressing spring (14), inner conical set (16) it is provided with between described inner sleeve (12) and overcoat (13), described inner conical set (16) and steel ball (17) are conflicted and one end and projection (15) conflict, described inner sleeve (12) is provided with away from overcoat (13) one end and draws cap (11)。
2. a kind of centrifugal pump according to claim 1, is characterized in that: described impeller baffle plate (3) and impeller (2) contact site are arranged with tube bank (5)。
3. a kind of centrifugal pump according to claim 1, it is characterized in that: the described pump housing (8) and be coated with scaling prevention corrosion resistant dope layer (21) in pump cover (1) runner, the described pump housing (8) lower end is provided with reinforcement (22)。
4. a kind of centrifugal pump according to claim 1, it is characterized in that: described rotating shaft (10) two ends are provided with bearing (6), axle sleeve (19) and bearing interstage sleeve (20) it is arranged with between described overcoat (13) and bearing (6), described axle sleeve (19) is provided with stairstepping labyrinth seal parts (18) near the one end for connecting shaft coupling, and described axle sleeve (19) is externally provided with the stairstepping protruding (23) coordinated with stairstepping labyrinth seal parts (18)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070578.9U CN205331042U (en) | 2016-01-23 | 2016-01-23 | Centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070578.9U CN205331042U (en) | 2016-01-23 | 2016-01-23 | Centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331042U true CN205331042U (en) | 2016-06-22 |
Family
ID=56319398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620070578.9U Active CN205331042U (en) | 2016-01-23 | 2016-01-23 | Centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205331042U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107894A (en) * | 2021-04-27 | 2021-07-13 | 江苏大学 | Centrifugal pump seal mouth ring with double adjustable spin |
-
2016
- 2016-01-23 CN CN201620070578.9U patent/CN205331042U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107894A (en) * | 2021-04-27 | 2021-07-13 | 江苏大学 | Centrifugal pump seal mouth ring with double adjustable spin |
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