CN208169132U - A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump - Google Patents
A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump Download PDFInfo
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- CN208169132U CN208169132U CN201820521047.6U CN201820521047U CN208169132U CN 208169132 U CN208169132 U CN 208169132U CN 201820521047 U CN201820521047 U CN 201820521047U CN 208169132 U CN208169132 U CN 208169132U
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Abstract
A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, is related to a kind of centrifugal pump, which includes outer barrel, pump cover, inner pump, rotor part and bearing body part composition.Intermediate girdle（24）It is mounted in the groove of shell and fixes by flange, rotor part is located at lower case（21）, upper body shell（20）It is secured with nuts, forms whole inner core packet, be put into outer cylinder body component；Rear pump cover component（6）, through tightening kingbolt（4）, bearing body part is installed（5）；Centrifugal pump first stage impeller is separately installed, remaining impeller is arranged back-to-back.The performance that the utility model improves pump is stablized, and the maintenance and disassembly at scene are easily facilitated.The utility model is particularly suitable for the liquid of steel mill, petrochemical plant, power plant's transporting oil and similar oil product or the liquid containing a small amount of particle, low temperature or high temperature, high pressure or the conveying of mordant liquid.
Description
Technical field
The utility model relates to a kind of centrifugal pumps, more particularly to a kind of first-stage double-absorption inner core axial subdivision multistage Double-casing
Centrifugal pump.
Background technique
Currently, multistage double casing volute pump mostly uses inner housing for radial single suction structure, and inner housing mostly uses sectional type
Radial subdivision structure, impeller is also using arrangement in the same direction, in use for the low cavitation of pump, axial force balance, the vibration of pump
All there are some problems in dynamic and whole inner housing disassembly.
Summary of the invention
The purpose of this utility model is to provide a kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, this realities
First-stage double-absorption inner core axial subdivision multistage double-shell structure is used with new structure.The first stage impeller of rotor uses double suction, interior
The pump housing opens the horizontally disposed volute body in face in using.Rotor forms pump inner core after being packed into inner pump, be integrally placed in outer barrel.
It solves the high cavitation of pump, pumps axial force self-balancing, the vibration and noise of pump is excessive, and whole inner housing dismantles problem, improves pump
Performance stablize, easily facilitate scene maintenance and disassembly.
The purpose of this utility model is achieved through the following technical solutions：
A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, the centrifugal pump include rotor part, interior pump
Body component, outer cylinder body component, kingbolt, bearing body part, rear pump cover component, rotor part in order first-stage double suction impeller,
It is spaced axle sleeve, two to four impellers, five to seven grades of impellers, balancing drum are sequentially arranged on axis；Stud is penetrated in lower case, loads onto shell
Body sealing ring；Back casing sealing ring, intermediate girdle are mounted in the groove of shell fixed by flange；It is equipped with inside rotor part
Axis, first-stage double suction impeller, remaining multiple impeller are arranged symmetrically, in the balancing drum that the end of all impellers is equipped with, wherein chopped-off head leaf
It is separated between wheel and second level impeller with interval axle sleeve；Rotor part is by pump both ends sliding bearing radial support and axial limit
Position；Inner pump is by upper housing and lower case, and casing ring and interstage bushing form, and the faying face of upper housing and lower case exists
On axial line, casing ring is fixed in lower case, and upper-lower casing is bolted together, forms complete runner,
Bearing body part is by upper ball cover, lower bearing body, bearing shell, rolling bearing, disc and labyrinth ring composition；Rotor part is located at
Lower case covers upper body shell and is secured with nuts, and forms whole inner core packet, is put into outer cylinder body component, installs rear pump cover component,
Kingbolt is tightened, bearing body part is loaded onto；Centrifugal pump first stage impeller is separately installed, remaining impeller is arranged back-to-back.
A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, the inner pump are upper and lower pump case axis
To subdivision, upper and lower pump case is bolted to together, and chopped-off head forms dual channel, remaining formation single channel at different levels.
A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, the inner housing is along horizontal axis cloth
It sets.
A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, the inner pump spue equipped with level-one
Runner, intermediate flow channel, discharge runner.
A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, the impeller are to be arranged symmetrically, leaf
The end of wheel is equipped with balancing drum.
A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, the centrifugal pump rolling bearing and cunning
The lubricating arrangement of dynamic bearing is respectively equipped with disc and labyrinth ring.
The advantages of the utility model is with effect：
1. the utility model pumps the impeller that rotor in inner core uses first-stage double-absorption, under same revolving speed and flow, due to
The flow velocity of the liquid of import is reduced, pump is not susceptible to cavitation.First stage impeller double suction simultaneously, remaining impeller can back-to-back cloth
Set, most of axial force can with self-balancing, along with a lesser balancing drum of size can balanced residue axial force.Due to
Using first-stage double-absorption and it is arranged symmetrically inner pump, the generation of radial force can be effectively reduced, reduce vibration, the noise of whole pump.It is interior
The axial subdivision structure of shell makes rotor part completely can hang out and be packed into from pump inner core, and the dynamic balance accuracy of rotor is able to
Intact holding facilitates the detachable maintaining of pump.
2. the utility model solves the problem of pump cavitation, axial force balance, vibration, noise and the pump inner core of pump are dismantled.
Detailed description of the invention
The novel first-stage double-absorption inner core axial subdivision multistage double casing volute pump structural schematic diagram of Fig. 1 the utility model；
Fig. 2 the utility model new type rotor structure schematic diagram；
Fig. 3 the utility model chopped-off head inner housing schematic diagram；
Fig. 4 the utility model chopped-off head inner housing B direction view；
Fig. 5 the utility model chopped-off head inner housing A direction view；
Fig. 6 the utility model upper-lower casing runner schematic diagram.
In figure：1 rotor part；2 inner pump components；3 outer cylinder body components；4 kingbolts；5 bearing body parts；6 pump cover components；
11 axis；12 first-stage double suction impellers；13 interval axle sleeves；14 2 to level Four impeller；15 five to seven grades of impellers；16 balancing drums；20
Upper housing；21 lower cases；22 casing rings；23 back casing sealing ring shells；24 intermediate girdles；25 water fenders.
Specific embodiment
The utility model is described in detail in illustrated embodiment with reference to the accompanying drawing.
There are axis and first-stage double suction impeller inside the utility model rotor part, remaining multiple impeller is arranged symmetrically, all
The balancing drum of the end of impeller smaller size wherein uses spacing shaft between first stage impeller and second level impeller come balancing axial thrust
Set separates；Rotor part is to realize radial support and axial limiting by pump both ends sliding bearing；Inner pump be by upper housing and under
The faying face of shell, casing ring and interstage bushing composition, upper housing and lower case on axial line, fix by casing ring
Onto lower case, upper-lower casing is bolted together, forms complete runner, such row is integrally in pump easy to repair
Portion's part.Bearing body part is rolled by upper ball cover, lower bearing body, bearing shell, rolling bearing, disc and labyrinth ring composition
Bearing bears a small amount of axial force, and radial force is born by sliding bearing, is all made of disc thin oil lubricant, prevents ash with labyrinth ring
The entrance of dirt.Centrifugal pump is separately installed using first stage impeller, remaining impeller is arranged back-to-back.Centrifugal pump inner pump is upper and lower pump case
Axial subdivision, upper and lower pump case are bolted to together, and chopped-off head forms dual channel, remaining symmetrical cloth of formation single blade impeller at different levels
Set, in the end of all impellers, the balancing drum of smaller size is come balancing axial thrust, wherein first stage impeller and second level impeller it
Between separated with interval axle sleeve；Bearing body part is by upper ball cover, lower bearing body, bearing shell, rolling bearing, disc and labyrinth ring
Composition, rolling bearing bear a small amount of axial force, and radial force is born by sliding bearing, is all made of disc thin oil lubricant, uses labyrinth
Ring prevents the entrance of dust.After centrifugal pump rotor and inner pump group armored pump inner core, it is reloaded into outer barrel, in outer barrel
Discharge end is packed into pump cover, highly pressurised liquid in canned pump body.
The composition of the utility model includes；Rotor part 1；Inner pump component 2；Outer cylinder body component 3；Kingbolt 4；Bearing body
Component 5；The several piths of rear pump cover component 6 composition, rotor part in order first-stage double suction impeller 12, interval axle sleeve 13,
Two to four impellers 14, five to seven grades of impellers 15, balancing drum 16 are sequentially arranged on axis 11.Stud is penetrated in lower case 21, is filled
Upper housing sealing ring 22；Back casing sealing ring 23, intermediate girdle 24 are mounted in the groove of shell by flange and are fixed, institute
Some sealing rings are assembled on its matching part by regulation, and rotor part is placed on lower case 21, cover the use of upper body shell 20
Nut forms whole inner core packet, is put into outer cylinder body component, installs rear pump cover component 6, tighten kingbolt 4, load onto bearing closing
Integral pump, is then connected on pipeline by body component 5.It being carried out after unclamping kingbolt 4 when installation and maintenance in this way, outer housing is motionless,
Inner housing can be released with one integral piece, and the scene of being put into can be suitble to the place of maintenance to repair installation, since inner housing is along water
Flat axial arrangement, unclamps and connects bolt on inner housing, opens two inner housings up and down, rotor part can be taken off, i.e., replaceable
Vulnerable part on rotor or rotor.Its main feature is that not needing disassembly radial structure with existing inner housing for the pump comparison of radial structure
The stator of pump avoids the damage of parts and components of rotor in the sub-process of disassembly pump, dismantles the problems such as difficulty is big of assembly.
When the utility model is centrifuged pump work, pumped liquid passes through the suction of outer cylinder body component 3 at a given pressure
Entrance increases the kinetic energy and potential energy liquid of liquid by the first-stage double suction impeller 12 in rotor part into inner pump component 2
Into after 2 level-one discharge runner of inner pump, most of kinetic energy is converted to potential energy, and liquid is transferred to by the runner on inner pump 2
Liquid is transferred to five to seven grades of impellers 15 by the intermediate flow channel of inner pump 2, thus boosted step by step by two to four impellers 14, each
Grade all increases same pressure.Final liquid enters the discharge opening of outer cylinder body component 3, stream by 2 discharge runner section of inner pump
Enter in the pipeline that spues.
The foregoing describe the structure composition of the utility model and working principles, say having read the above-mentioned of the utility model
Content after, It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments, above-described embodiment and
Only illustrate the structure composition and working principle of the utility model described in specification, do not depart from the spirit of the present invention and
It under the premise of range, will also have various changes and improvements, these changes and improvements both fall within claimed invention model
In enclosing, the protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (6)
1. a kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump, which is characterized in that the centrifugal pump includes rotor
Component（1）, inner pump component（2）, outer cylinder body component（3）, kingbolt（4）, bearing body part（5）, rear pump cover component（6）, turn
Subassembly is in order first-stage double suction impeller（12）, interval axle sleeve（13）, two to four impellers（14）, five to seven grades of impellers（15）,
Balancing drum（16）It is sequentially arranged at axis（11）On；Lower case（21）On penetrate stud, load onto casing ring（22）；Back casing is close
Seal ring（23）, intermediate girdle（24）It is mounted on by flange in the groove of shell fixed；It is double that axis, chopped-off head are equipped with inside rotor part
Phyllidium wheel, remaining multiple impeller are arranged symmetrically, in the balancing drum that the end of all impellers is equipped with, wherein first stage impeller and the second level
It is separated between impeller with interval axle sleeve；Rotor part is by pump both ends sliding bearing radial support and axial limiting；Inner pump is
By upper housing and lower case, casing ring and interstage bushing are formed, and the faying face of upper housing and lower case is on axial line, shell
Body sealing ring is fixed in lower case, and upper-lower casing is bolted together, forms complete runner, and bearing body part is
By upper ball cover, lower bearing body, bearing shell, rolling bearing, disc and labyrinth ring composition；Rotor part is located at lower case（21）,
Upper body shell（20）It is secured with nuts, forms whole inner core packet, be put into outer cylinder body component；Rear pump cover component（6）, through tightening master
Bolt（4）, bearing body part is installed（5）；Centrifugal pump first stage impeller is separately installed, remaining impeller is arranged back-to-back.
2. a kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump according to claim 1, which is characterized in that
The inner pump component（2）For upper and lower pump case axial subdivision, upper and lower pump case is bolted to together, and chopped-off head forms dual channel,
Remaining formation single channel at different levels.
3. a kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump according to claim 2, which is characterized in that
The inner pump component（2）It is arranged along horizontal axis.
4. a kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump according to claim 3, which is characterized in that
The inner pump component（2）Equipped with level-one discharge runner, intermediate flow channel, discharge runner.
5. a kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump according to claim 1, which is characterized in that
The impeller is to be arranged symmetrically, and the end of impeller is equipped with balancing drum.
6. a kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump according to claim 3, which is characterized in that
The lubricating arrangement of the centrifugal pump rolling bearing and sliding bearing is respectively equipped with disc and labyrinth ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521047.6U CN208169132U (en) | 2018-04-13 | 2018-04-13 | A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521047.6U CN208169132U (en) | 2018-04-13 | 2018-04-13 | A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump |
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| Publication Number | Publication Date |
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| CN208169132U true CN208169132U (en) | 2018-11-30 |
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| CN201820521047.6U Active CN208169132U (en) | 2018-04-13 | 2018-04-13 | A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412775A (en) * | 2018-04-13 | 2018-08-17 | 沈阳格瑞德泵业有限公司 | A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump |
-
2018
- 2018-04-13 CN CN201820521047.6U patent/CN208169132U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412775A (en) * | 2018-04-13 | 2018-08-17 | 沈阳格瑞德泵业有限公司 | A kind of first-stage double-absorption inner core axial subdivision multistage double casing volute pump |
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