CN207621031U - A kind of single-stage cantilever centrifugal pump - Google Patents
A kind of single-stage cantilever centrifugal pump Download PDFInfo
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- CN207621031U CN207621031U CN201721849212.2U CN201721849212U CN207621031U CN 207621031 U CN207621031 U CN 207621031U CN 201721849212 U CN201721849212 U CN 201721849212U CN 207621031 U CN207621031 U CN 207621031U
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Abstract
The utility model discloses a kind of single-stage cantilever centrifugal pump, including green end and power end, and the green end includes the pump housing, pump cover, impeller, impeller nut, anti-rotation gasket, and the power end includes bearing housing, journal bearing, thrust bearing；It is squeezed and is fixed by bearing housing flange between the pump housing and pump cover；Impeller nut does groove special designing, while increasing anti-rotation gasket；Bearing housing modularized design simultaneously increases axis intensity, while using high-mechanic radial direction and thrust bearing and increasing radiating rib plate design.The utility model solves the problems, such as that existing single-stage cantilever centrifugal pump, pump configuration assemble simple, impeller anti-loose, bearing capacity enhancing, the raising of pump group service life, seal oil raising, bearing good heat dissipation, the efficiency of pump height.
Description
Technical field
The utility model is related to a kind of pump housing more particularly to a kind of single-stage cantilever centrifugal pumps.
Background technology
Centrifugal pump has the diversified forms such as vertical, horizontal, single-stage, multistage, single suction, double suction, self-priming.Centrifugal pump is to utilize leaf
Wheel rotates and makes water that centrifugal movement occur and carry out work.Water pump is before activation, it is necessary to make to be full of water in pump case and suction hose, then
Start motor, pump shaft impeller and water is made to do high speed rotary motion, water occurs centrifugal movement, impeller outer edge is thrown toward, through snail
The runner of shape pump case flows into the pressure pipe road of water pump.Single-stage cantilever formula centrifugal pump is one kind of centrifugal pump, i.e., on pump shaft only
One impeller, only there are one water inlets on impeller, eliminate suspension pedestal, current existing single-stage cantilever centrifugal pump primary structure
Feature has：Radial subdivision shell, single channel or dual channel shell, pass through bolt direct connection between the pump housing and pump cover；Double shrouded wheel designs,
It is locked by impeller nut；Arrival end is inhaled, outlet ejects, footing or horizontal center line support；Cantilever bearings babinet, cooperation
Rolling bearing bears radial load and remaining axial thrust；Lip seals or simple labyrinth oil seal；The Hydraulic Design efficiency is all relatively old
Design, efficiency are relatively low.
Above structure feature causes problem following existing for current single-stage cantilever centrifugal pump to have：
（1）Connection between the pump housing and pump cover is excessively complicated, increases the complexity of pump, while reducing the efficiency of dismounting；
（2）Impeller form design is single, cannot be applicable in some special operation conditions；
（3）The fixation of impeller causes impeller to loosen or even fall off in operation or shutdown without anti-rotating function；
（4）Bearing capacity in bearing housing is insufficient, causes pump operation less than requiring the time limit；
（5）Bearing oil leaks in the process of running, causes bearing housing to lose oil and then leads to failure of pump；
（6）Bearing housing heat dissipation is bad to cause bearing temperature rise to increase, or even burns out a bearing；
（7）Axis intensity is insufficient, leads to off-axis phenomenon；
（8）Single-stage cantilever formula centrifugal pump whole efficiency is relatively low, causes certain energy waste.
Utility model content
The purpose of this utility model is exactly to solve the above problem in the prior art, provides a kind of single-stage, end inhales, is radial
Subdivision, cantilever centrifugal pump are applicable in the application row such as petroleum refining, petrochemical process, boiler water cycle, water process, universal industrial
Industry.
The purpose of this utility model will be achieved by the following technical programs：
A kind of single-stage cantilever centrifugal pump, including green end and power end, the green end include the mutually fixed and pump housing and pump cover and
It is arranged in the impeller being formed by by the pump housing and pump cover in space, the power end includes bearing housing, journal bearing, pushes away
Power bearing, and stretch to the axis in the pump housing.The impeller is fixed on one end of the axis, the journal bearing, thrust
The other end in the axis is arranged in bearing, and one end of the pump housing is provided with threaded hole, and one end of the bearing housing is provided with
Flange, the pump housing and bearing housing are used and are screwed；One end of the pump housing is provided with step surface, one end of the pump cover
It is provided with external part, the external part is set between the step surface and the flange of the bearing housing, and the external part
Thickness be more than the step surface to the gap between the flange of the bearing housing, the spiral shell between the pump housing and bearing housing
Line, which is fastenedly connected, is pressed on the pump cover between the pump housing and bearing housing.
Preferably, the pump housing and the bearing housing are both provided with hollow cavity, and the axis is set to the cavity
Central axes on, the impeller is fastened on one end of the axis by an impeller nut.
Preferably, anti-rotation gasket is equipped between the impeller nut and the axis, the anti-rotation gasket card is set to the leaf
In the groove for taking turns nut.
Preferably, the medial ends of the pump housing are provided with sucking flange, top is provided with outlet(discharge) flange, the pump housing
Sucking flange, outlet(discharge) flange, process pipe and the impeller form the runner of medium, and the fluid inlet of the impeller is towards institute
It is coaxial with the outlet(discharge) flange to state sucking flange, fluid outlet.
Preferably, it is provided with radiating rib plate on the peripheral surface of the bearing housing.
Preferably, the inner ring of the thrust bearing is fixed on the shaft by bearing nut.
Preferably, journal bearing gland, longitudinal end oil sealing, thrust end oil sealing, thrust end bearing are additionally provided on the axis
Be additionally provided with O-ring between gland, the axis and journal bearing gland, thrust end bearing gland, the journal bearing gland and
Thrust end bearing gland is connected by screw respectively on the bearing housing, and by the journal bearing, thrust bearing, diameter
It is pressed in the bearing housing to end oil sealing, thrust end oil sealing and O-ring, to form modular component together with axis.
Preferably, the green end further includes shell choma, impeller port ring, and the impeller port ring and shell choma 1 include
At two, be separately positioned at the arc transition of impeller flabellum and impeller back, respectively with the shell choma being arranged on the pump housing,
The shell choma clearance fit being arranged on pump cover.
Preferably, throat's restrictor ring is additionally provided between the axis and pump cover.
Preferably, the green end further includes body lid spirotallic gasket and machine envelope spirotallic gasket, the body lid spirotallic gasket setting
Between the pump housing and pump cover；The machine envelope spirotallic gasket is set between the pump cover and bearing housing.
The beneficial effects of the utility model are mainly reflected in：Solve the problems, such as existing single-stage cantilever centrifugal pump, pump knot
Structure assembly is simple, the enhancing of impeller anti-loose, bearing capacity, the raising of pump group service life, seal oil raising, bearing good heat dissipation,
The efficiency of pump is high.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of single-stage cantilever centrifugal pump of the preferred embodiment in the utility model；
Fig. 2 is the enlarged diagram of part A in Fig. 1.
It is marked in figure as follows：
1：Green end；2：Power end；3：The pump housing；4：Pump cover；5：Impeller；6：Impeller nut；7：Anti-rotation gasket；8：Axis；9：Axis
Hold babinet；10：Journal bearing；11：Thrust bearing；12：Journal bearing gland；13：Thrust end bearing gland；14：Longitudinal end oil
Envelope；15：Thrust end oil sealing；16：O-ring；17 shell chomas；18：Impeller port ring；19：Throat's restrictor ring；20：Body lid wound gasket
Piece；21：Machine seals spirotallic gasket；22：Nut；23：Lock stud；24：Radiating rib plate；25：Suck flange；26：Outlet(discharge) flange.
Specific implementation mode
The purpose of this utility model, advantage and feature will carry out figure by the non-limitative illustration of preferred embodiment below
Show and explains.These embodiments are only the prominent examples using technical solutions of the utility model, all to take equivalent replacement or wait
Effect transformation and formed technical solution, all fall within the requires of the utility model protection within the scope of.
As shown in Figure 1 to Figure 2, the utility model discloses a kind of single-stage cantilever centrifugal pump, including green end 1 and power end 2,
The green end 1 includes that mutually fixed and the pump housing 3 and pump cover 4 and being arranged is formed by by the pump housing 3 and pump cover 4 in space
Impeller 5, the power end 2 includes bearing housing 9, journal bearing 10, thrust bearing 11, and is stretched in the pump housing 3
Axis 8.
The impeller 5 is fixed on one end of the axis 8, and the journal bearing 10, thrust bearing 11 are arranged in the axis 8
The inner ring of the other end, the thrust bearing 10 is fixed on by bearing nut on the axis 8.
One end of the pump housing 3 is provided with threaded hole, and one end of the bearing housing 9 is provided with flange, the pump housing and
Bearing housing is used and is screwed；The threaded fasteners are nut 22 and locking stud 23.
One end of the pump housing 3 is provided with step surface, and one end of the pump cover 4 is provided with external part, and the external part is set
It is placed between the step surface and the flange of the bearing housing 9, and the thickness of the external part is more than the step surface to institute
The gap between the flange of bearing housing is stated, the screw threads for fastening between the pump housing 3 and bearing housing 9 is connected the pump cover 4
It is pressed between the pump housing 3 and bearing housing 9.By way of described be screwed, it is possible to reduce the sucking pump of traditional single stage end
It is connected by bolts between the pump housing 3 and pump cover 4, the structure being connected again by bolt between the pump housing 3 and bearing housing 9, fastening bolt
It is a set of to be simplified from two sets, optimizes mounting structure, reduces operation, improves flow path efficiency.
The pump housing 3 and the bearing housing 9 are both provided with hollow cavity, and the axis 8 is set in the cavity
On axis, the impeller 5 is fastened on one end of the axis 8 by an impeller nut 6.The medial ends of the pump housing 3 are provided with suction
Enter flange 25, top is provided with outlet(discharge) flange 26, the sucking flange 25 of the pump housing, outlet(discharge) flange 26, process pipe and described
Impeller 5 forms the runner of medium, the fluid inlet of the impeller 5 towards the sucking flange 25, fluid outlet with it is described go out
Mouth flange 26 is coaxial.Anti-rotation gasket 7 is equipped between the impeller nut 6 and the axis 8, the card of anti-rotation gasket 7 is set to described
In the groove of impeller nut 6, solves the defect of prior art impeller rotation.
It is provided with radiating rib plate 24 on the peripheral surface of the bearing housing 9, can effectively solve existing bearing housing and dissipate
The bad problem of heat prevents bearing heating from burning out, improves the service life of centrifugal pump.
Journal bearing gland 12, longitudinal end oil sealing 14, thrust end oil sealing 15, thrust end bearing are additionally provided on the axis 8
O-ring 16, the radial axle are additionally provided between gland 13, the axis 8 and journal bearing gland 12, thrust end bearing gland 13
Pressure cap 12 and thrust end bearing gland 13 are connected by screw respectively on the bearing housing 9, and by the radial axle
10, thrust bearing 11, longitudinal end oil sealing 14, thrust end oil sealing 15 and O-ring 16 is held to be pressed in the bearing housing 9, to
Axis 8 forms modular component together.Modular design can be such that pump integrally assembles.
The green end further includes shell choma 17, impeller port ring 18, and the impeller port ring 18 and shell choma 17 include
At two, be separately positioned at the arc transition of impeller flabellum and impeller back, respectively with the shell choma that is arranged on the pump housing 3
17,17 clearance fit of shell choma on pump cover 4 is set.Throat's restrictor ring 19 is additionally provided between the axis 8 and pump cover 4.
Such structure is more advantageous to the performance of impeller hydraulic performance, also more meets anti scuffing mechanism.
The green end further includes body lid spirotallic gasket 20 and machine envelope spirotallic gasket 21, and the body lid spirotallic gasket 20 is set to
Between the pump housing 3 and pump cover 4；The machine envelope spirotallic gasket 21 is set between the pump cover 4 and bearing housing 9.
In specific implementation process, medium enters from end sucking flange 25 in the pump housing 3 when pump work, is driven by axis 8
The rotation acting of impeller 5, enters process pipe after taking top exit flange 26 after medium is pressurizeed to；The rotation of period impeller 5 passes through
Journal bearing 10 and thrust bearing 11 rotate as supporting point and transmit energy.
Still there are many embodiment, all technologies formed using equivalents or equivalent transformation for the utility model
Scheme is all fallen within the scope of protection of the utility model.
Claims (10)
1. a kind of single-stage cantilever centrifugal pump, including green end（1）And power end（2）, which is characterized in that the green end（1）Including phase
The fixed and pump housing（3）And pump cover（4）And it is arranged by the pump housing（3）And pump cover（4）The impeller being formed by space（5）,
The power end（2）Including bearing housing（9）, journal bearing（10）, thrust bearing（11）, and stretch to the pump housing（3）
Interior axis（8）, the impeller（5）It is fixed on the axis（8）One end, the journal bearing（10）, thrust bearing（11）Setting
In the axis（8）The other end,
The pump housing（3）One end be provided with threaded hole, the bearing housing（9）One end be provided with flange, the pump housing and
Bearing housing is used and is screwed；The pump housing（3）One end be provided with step surface, the pump cover（4）One end be provided with and stretch
Outlet, the external part are set to the step surface and the bearing housing（9）Flange between, and the thickness of the external part
More than the gap between the flange of the step surface to the bearing housing, the pump housing（3）And bearing housing（9）Between spiral shell
Line is fastenedly connected the pump cover（4）It is pressed on the pump housing（3）And bearing housing（9）Between.
2. a kind of single-stage cantilever centrifugal pump according to claim 1, it is characterised in that：The pump housing（3）With the bearing
Babinet（9）It is both provided with hollow cavity, the axis（8）It is set on the central axes of the cavity, the impeller（5）By a leaf
Take turns nut（6）It is fastened on the axis（8）One end.
3. a kind of single-stage cantilever centrifugal pump according to claim 2, it is characterised in that：The impeller nut（6）With it is described
Axis（8）Between be equipped with anti-rotation gasket（7）, the anti-rotation gasket（7）Card is set to the impeller nut（6）Groove in.
4. a kind of single-stage cantilever centrifugal pump according to claim 1, it is characterised in that：The pump housing（3）Medial ends
It is provided with sucking flange（25）, top be provided with outlet(discharge) flange（26）, the sucking flange of the pump housing（25）, outlet(discharge) flange
（26）, process pipe and the impeller（5）Form the runner of medium, the impeller（5）Fluid inlet towards the sucking
Flange（25）, fluid outlet and the outlet(discharge) flange（26）It is coaxial.
5. a kind of single-stage cantilever centrifugal pump according to claim 1, it is characterised in that：The bearing housing（9）Periphery
Radiating rib plate is provided on face（24）.
6. a kind of single-stage cantilever centrifugal pump according to claim 1, it is characterised in that：The thrust bearing（10）Inner ring
It is fixed on the axis by bearing nut（8）On.
7. a kind of single-stage cantilever centrifugal pump according to claim 1, it is characterised in that：The axis（8）On be additionally provided with diameter
To bearing gland（12）, longitudinal end oil sealing（14）, thrust end oil sealing（15）, thrust end bearing gland（13）, the axis（8）And diameter
To bearing gland（12）, thrust end bearing gland（13）Between be additionally provided with O-ring（16）, the journal bearing gland（12）With
Thrust end bearing gland（13）It is connected by screw respectively in the bearing housing（9）On, and by the journal bearing（10）、
Thrust bearing（11）, longitudinal end oil sealing（14）, thrust end oil sealing（15）And O-ring（16）It is pressed in the bearing housing（9）It is interior, it uses
With with axis（8）Modular component is formed together.
8. a kind of single-stage cantilever centrifugal pump according to claim 1, it is characterised in that：The green end further includes shell choma
（17）, impeller port ring（18）, the impeller port ring（18）With shell choma（17）Include at two, being separately positioned on impeller flabellum
Arc transition at and impeller back, respectively be arranged in the pump housing（3）On shell choma（17）, be arranged in pump cover（4）On
Shell choma（17）Clearance fit.
9. a kind of single-stage cantilever centrifugal pump according to claim 1, it is characterised in that：The axis（8）And pump cover（4）Between
It is additionally provided with throat's restrictor ring（19）.
10. a kind of single-stage cantilever centrifugal pump according to claim 1, it is characterised in that：The green end further includes that body lid twines
Around gasket（20）Spirotallic gasket is sealed with machine（21）, the body lid spirotallic gasket（20）It is set to the pump housing（3）And pump cover（4）It
Between；The machine seals spirotallic gasket（21）It is set to the pump cover（4）And bearing housing（9）Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849212.2U CN207621031U (en) | 2017-12-26 | 2017-12-26 | A kind of single-stage cantilever centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849212.2U CN207621031U (en) | 2017-12-26 | 2017-12-26 | A kind of single-stage cantilever centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN207621031U true CN207621031U (en) | 2018-07-17 |
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ID=62830219
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721849212.2U Active CN207621031U (en) | 2017-12-26 | 2017-12-26 | A kind of single-stage cantilever centrifugal pump |
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| Country | Link |
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| CN (1) | CN207621031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404291A (en) * | 2018-11-16 | 2019-03-01 | 福斯流体控制（苏州）有限公司 | High-performance low-flow high-lift single-stage cantilever centrifugal pump |
| CN110966385A (en) * | 2018-09-28 | 2020-04-07 | 日本电产株式会社 | Reduction gear and electrical equipment |
-
2017
- 2017-12-26 CN CN201721849212.2U patent/CN207621031U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966385A (en) * | 2018-09-28 | 2020-04-07 | 日本电产株式会社 | Reduction gear and electrical equipment |
| CN109404291A (en) * | 2018-11-16 | 2019-03-01 | 福斯流体控制（苏州）有限公司 | High-performance low-flow high-lift single-stage cantilever centrifugal pump |
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