CN207813944U - A kind of vertical multi-stage centrifugal pump - Google Patents

A kind of vertical multi-stage centrifugal pump Download PDF

Info

Publication number
CN207813944U
CN207813944U CN201721751144.6U CN201721751144U CN207813944U CN 207813944 U CN207813944 U CN 207813944U CN 201721751144 U CN201721751144 U CN 201721751144U CN 207813944 U CN207813944 U CN 207813944U
Authority
CN
China
Prior art keywords
impeller
pump
pump shaft
vertical
guide vane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201721751144.6U
Other languages
Chinese (zh)
Inventor
林晓忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai China Airlines Pump Industry Ltd By Share Ltd
Original Assignee
Shanghai China Airlines Pump Industry Ltd By Share Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai China Airlines Pump Industry Ltd By Share Ltd filed Critical Shanghai China Airlines Pump Industry Ltd By Share Ltd
Priority to CN201721751144.6U priority Critical patent/CN207813944U/en
Application granted granted Critical
Publication of CN207813944U publication Critical patent/CN207813944U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of vertical multi-stage centrifugal pumps, including:Driving motor, pump shaft, guide vane, impeller, pump case, inner casing, pedestal and integrated mechanical sealing;Driving motor is connect by shaft coupling with pump shaft dynamic with transfer tube shaft rotation;Pump case has water inlet-outlet segment, water inlet stage casing and water outlet stage casing along water inlet direction;Multiple guide vanes and multiple impeller sets are set on pump shaft, and guide vane and wheel space connect, and guide vane connect with inner casing and is rotatably coupled with pump shaft, and impeller is fixedly connected with pump shaft;Pump shaft upper end is pierced by position and is sealed by integrated mechanical sealing;Pump shaft lower end is suspended in into water stage casing;Pump case lower end is equipped with suction flange and outlet(discharge) flange, the center line coincidence of suction flange and outlet(discharge) flange;The water inlet direction and water outlet direction of impeller are substantially vertical.Flange is imported and exported on same center line, compact-sized, floor space is small, easy for installation.Using integrated mechanical sealing, installation maintenance is easy to operate, and reliability is high.Noise is low, with small vibration, and versatility is good.

Description

A kind of vertical multi-stage centrifugal pump
Technical field
The utility model belongs to pump technical field, and in particular to a kind of vertical multi-stage centrifugal pump.
Background technology
Currently, vertical multi-stage centrifugal pump is a kind of very extensive general hydraulic of application range, in recent years in The demand of the rapid development of state's science and technology, vertical centrifugal multistage pump multiple centrifugal pump is also constantly increasing.Common vertical multi-stage centrifugal pump, Under the collective effect of gravity and liquid hydraulic thrust, the rotor that is made of axis, impeller, the rotating part of mechanical seal, shaft coupling etc. Receive a downward axial force.Common balancing device is in balancing frame, balancing drum and single sealing ring.Balancing frame and balancing drum are flat Weigh axial force, it is also necessary to and balance pipe coordinates, and device is complicated, and reliability is low, and maintenance rate is high, while to improve the stationarity of rotor, The diameter of axis will be increased, as a result reduce the area of passage of impeller eye, reduce the cavitation performance of pump.
Utility model content
The purpose of this utility model is to provide a kind of vertical multi-stage centrifugal pumps.
To achieve the above object, the utility model provides the following technical solutions:
A kind of vertical multi-stage centrifugal pump, including:
Driving motor, pump shaft, guide vane, impeller, pump case, inner casing, pedestal and integrated mechanical sealing;The driving motor is logical Shaft coupling is crossed to be connect with the pump shaft to drive the pump shaft to rotate;The pump case has water inlet-outlet segment, water inlet along water inlet direction Stage casing and water outlet stage casing;Multiple guide vanes and multiple impeller sets are set on pump shaft, the guide vane and the wheel space Connect, the guide vane connect with the inner casing and is rotatably coupled with the pump shaft, and the impeller is fixed with the pump shaft to be connected It connects;The pump shaft upper end is pierced by position and is sealed by the integrated mechanical sealing;Pump shaft lower end is suspended in into water stage casing;Under pump case End is equipped with suction flange and outlet(discharge) flange, the center line coincidence of suction flange and outlet(discharge) flange;The water inlet direction of the impeller and It is substantially vertical to be discharged direction.
Preferably, be formed with annular runner between the inner casing and the pump case, the annular runner upper end in water outlet Duan Liantong and lower end and outlet.
Preferably, the annular runner and the junction in water outlet stage casing are provided with pressing plate.
Preferably, the upper end of the annular runner is provided with mechanical sealing base and vent valve, the vent valve and the machine The sealing cooperation of tool seal receptacle.
Preferably, the upper end of the annular runner is provided with filler, is threaded at the filler and adds water screw plug, Described plus water screw plug is arranged with O-ring seal.
Preferably, the pump shaft lower end is connected with locking nut, so that the guide vane and the impeller are fixed in the axial direction.
Preferably, the pump shaft is rotatably engaged by axle sleeve between grade and the guide vane, and axle sleeve is located at phase between the grade Between two adjacent impellers;The impeller is fixedly connected with the pump shaft.
Preferably, it is the first impeller close to the impeller of the locking nut, the impeller close to first impeller is second Impeller, the guide vane between first impeller and second impeller are the first guide vane;First impeller and second leaf Axle sleeve includes two short sleeves between grade between wheel, and sliding bearing, the sliding bearing are provided between two short sleeves Inner ring fixed with the pump shaft, the outer ring of the sliding bearing is fixed with first guide vane.
Preferably, chopped-off head axle sleeve, the chopped-off head axle sleeve and pump are provided between the locking nut and first impeller Axis is rotatably assorted.
Preferably, further include motor cabinet and coupling guard, the motor cabinet passes through the coupling guard and connects with the pump case It connects, motor is installed on motor cabinet.
Preferably, the lower end of the pump case is provided with drain valve.
Preferably, suction flange and outlet(discharge) flange are both provided with the baffle ring for sealing.
The beneficial effects of the utility model:
The vertical multi-stage centrifugal pump of the utility model, inlet and outlet flange is on same center line, compact-sized, floor space It is small, it is easy for installation.Using the mechanical seal of packaging type structure, keep installation maintenance operation safer, conveniently, and ensure sealing can By property.Service life length, good appearance.Motor shaft is directly connected to pump shaft by shaft coupling, and connection precision is high.Noise is low, shakes Dynamic small, versatility is good.
Description of the drawings
Fig. 1 is the vertical multi-stage centrifugal pump schematic diagram of the utility model;
Fig. 2 is the A of the vertical multi-stage centrifugal pump of the utility model to schematic diagram.
In figure:Driving motor 1;Pump shaft 2;Shaft coupling 2a;Guide vane 3;Impeller 4;Pump case 5;Inner casing 6;Pedestal 7;Packaging type machine Tool sealing 8;Water inlet-outlet segment 9;Intake stage casing 10;It is discharged stage casing 11;Suction flange 12;Outlet(discharge) flange 13;Pressing plate 14;Mechanical seal Seat 15;Vent valve 16;Add water screw plug 17;O-ring seal 18;Locking nut 19;Axle sleeve 20 between grade;Short sleeve 21;Sliding bearing 22;Chopped-off head axle sleeve 23;Motor cabinet 24;Coupling guard 25;Drain valve 26;Baffle ring 27;O-ring 28;Baffle ring 29;Baffle ring bearing 30; Pull rod 31.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.
- Fig. 2 is please referred to Fig.1, the utility model provides a kind of technical solution:
A kind of vertical multi-stage centrifugal pump, including:
Driving motor 1, pump shaft 2, guide vane 3, impeller 4, pump case 5, inner casing 6, pedestal 7 and integrated mechanical sealing 8;Driving electricity Machine 1 is connect by shaft coupling 2a with pump shaft 2 to drive pump shaft 2 to rotate;Pump case 5 has along water inlet direction in water inlet-outlet segment 9, water inlet Section 10 and water outlet stage casing 11;Multiple guide vanes 3 and multiple impellers 4 are sheathed on pump shaft 2, and guide vane 3 and the interval of impeller 4 connect, guide vane 3 It connect with inner casing 6 and is rotatably coupled with pump shaft 2, impeller 4 is fixedly connected with pump shaft 2;2 upper end of pump shaft is pierced by position and passes through packaging Formula mechanical seal 8 seals;2 lower end of pump shaft is suspended in into water stage casing 10;5 lower end of pump case is equipped with suction flange 12 and outlet(discharge) flange 13, the center line coincidence of suction flange 12 and outlet(discharge) flange 13;The water inlet direction and water outlet direction of impeller 4 are substantially vertical.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, inner casing 6 and pump case 5 it Between be formed with annular runner, annular runner upper end is connected to water outlet stage casing 11 and lower end and outlet.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, annular runner and water outlet The junction in stage casing 11 is provided with pressing plate 14.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, the upper end of annular runner It is provided with mechanical sealing base 15 and vent valve 16, vent valve 16 coordinates with the sealing of mechanical sealing base 15.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, the upper end of annular runner It is provided with filler, is threaded at filler and adds water screw plug 17, water screw plug 17 is added to be arranged with O-ring seal 18.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, the connection of 2 lower end of pump shaft There is locking nut 19, so that guide vane 3 and impeller 4 are fixed in the axial direction.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, pump shaft 2 is by between grade Axle sleeve 20 is rotatably engaged with guide vane 3, and axle sleeve 20 is between two adjacent impellers 4 between grade;Impeller 4 is fixed with pump shaft 2 Connection.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, close to locking nut 19 Impeller 4 be the first impeller 4, close to the first impeller 4 impeller 4 be the second impeller 4, between the first impeller 4 and the second impeller 4 Guide vane 3 is the first guide vane 3;Axle sleeve 20 includes two short sleeves 21 between grade between first impeller 4 and the second impeller 4, two short Sliding bearing 22 is provided between axle sleeve 21, inner ring and the pump shaft 2 of sliding bearing 22 are fixed, the outer ring of sliding bearing 22 and first Guide vane 3 is fixed.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, locking nut 19 and Chopped-off head axle sleeve 23 is provided between one impeller 4, chopped-off head axle sleeve 23 is rotatably assorted with pump shaft 2.
Preferably, further include motor cabinet 24 and coupling guard 25, motor cabinet 24 is connect by coupling guard 25 with pump case 5, Motor is installed on motor cabinet 24.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, under pump case 5 End is provided with drain valve 26.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, suction flange 12 and go out Mouth flange 13 is both provided with the baffle ring 27 for sealing.
Preferably, in order to allow this vertical multi-stage centrifugal pump preferably to work, in the present embodiment, suction flange 12 and go out It is respectively provided on the ring flange of mouth flange 13 there are four connecting hole, four connecting holes are uniformly distributed circumferentially.
It is sealed and is coordinated by O-ring 28 between mechanical sealing base 15 and pump case 5.Afterbody impeller 4 and packaging type machinery It is additionally provided with baffle ring 29 and baffle ring bearing 30 between sealing 8.
Pull rod 31 is additionally provided between mechanical sealing base 15 and pedestal 7, the end of pull rod 31 passes through nut locking.
The beneficial effects of the utility model:
The operation principle and process for using of the utility model:After the vertical multi-stage centrifugal pump of the utility model starts, work as drive When dynamic motor 1 drives 4 high speed rotation of impeller on pump shaft 2, liquid in impeller 4 is filled under the influence of centrifugal force, from leaf Take turns 4 centers keeps pressure and speed same along the surrounding that interlobate runner is got rid of to impeller 4 since liquid is acted on by blade Shi Zengjia is led to the impeller 4 of time level-one by the runner of guide vane 3, is exactly such principle, successively flows through all impellers 4 and guide vane 3, further increase the pressure energy of liquid.After each impeller 4 is superimposed step by step, certain lift is just obtained.This Utility model uses vertical structure, and for inlet and outlet flange 13 on same center line, compact-sized, floor space is small, easy for installation. Using the mechanical seal of packaging type structure, keep installation maintenance operation safer, conveniently, and ensure the reliability of sealing.Use the longevity Life length, good appearance.Motor shaft is directly connected to pump shaft 2 by shaft coupling 2a, and connection precision is high.Noise is low, with small vibration, general Property is good.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (10)

1. a kind of vertical multi-stage centrifugal pump, which is characterized in that including:
Driving motor, pump shaft, guide vane, impeller, pump case, inner casing, pedestal and integrated mechanical sealing;The driving motor passes through connection Axis device is connect with the pump shaft to drive the pump shaft to rotate;The pump case has water inlet-outlet segment, water inlet stage casing along water inlet direction With water outlet stage casing;Multiple guide vanes and multiple impeller sets are set on pump shaft, and the guide vane and the wheel space connect, The guide vane connect with the inner casing and is rotatably coupled with the pump shaft, and the impeller is fixedly connected with the pump shaft;Institute It states pump shaft upper end and is pierced by position and sealed by the integrated mechanical sealing;Pump shaft lower end is suspended in into water stage casing;Pump case lower end is set There are suction flange and outlet(discharge) flange, the center line coincidence of suction flange and outlet(discharge) flange;The water inlet direction of the impeller and water outlet Direction is substantially vertical.
2. a kind of vertical multi-stage centrifugal pump according to claim 1, it is characterised in that:
Annular runner is formed between the inner casing and the pump case, the annular runner upper end is connected to water outlet stage casing and lower end With outlet.
3. a kind of vertical multi-stage centrifugal pump according to claim 2, it is characterised in that:
The annular runner and the junction in water outlet stage casing are provided with pressing plate.
4. a kind of vertical multi-stage centrifugal pump according to claim 2, it is characterised in that:
The upper end of the annular runner is provided with mechanical sealing base and vent valve, and the vent valve is sealed with the mechanical sealing base Cooperation.
5. a kind of vertical multi-stage centrifugal pump according to claim 2, it is characterised in that:
The upper end of the annular runner is provided with filler, is threaded at the filler and adds water screw plug, described plus water spiral shell It plugs and is equipped with O-ring seal.
6. a kind of vertical multi-stage centrifugal pump according to claim 1, it is characterised in that:
The pump shaft lower end is connected with locking nut, so that the guide vane and the impeller are fixed in the axial direction.
7. a kind of vertical multi-stage centrifugal pump according to claim 6, it is characterised in that:
The pump shaft is rotatably engaged by axle sleeve between grade and the guide vane, and axle sleeve is located at described in adjacent two between the grade Between impeller;The impeller is fixedly connected with the pump shaft.
8. a kind of vertical multi-stage centrifugal pump according to claim 7, it is characterised in that:
Impeller close to the locking nut is the first impeller, and the impeller close to first impeller is the second impeller, described the Guide vane between one impeller and second impeller is the first guide vane;Between grade between first impeller and second impeller Axle sleeve includes two short sleeves, is provided with sliding bearing between two short sleeves, the inner ring of the sliding bearing with it is described Pump shaft is fixed, and the outer ring of the sliding bearing is fixed with first guide vane.
9. a kind of vertical multi-stage centrifugal pump according to claim 8, it is characterised in that:
Chopped-off head axle sleeve is provided between the locking nut and first impeller, the chopped-off head axle sleeve is rotatably assorted with pump shaft.
10. a kind of vertical multi-stage centrifugal pump according to claim 1, it is characterised in that:
Further include motor cabinet and coupling guard, the motor cabinet is connect by the coupling guard with the pump case, motor installation In motor cabinet.
CN201721751144.6U 2017-12-15 2017-12-15 A kind of vertical multi-stage centrifugal pump Active CN207813944U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721751144.6U CN207813944U (en) 2017-12-15 2017-12-15 A kind of vertical multi-stage centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721751144.6U CN207813944U (en) 2017-12-15 2017-12-15 A kind of vertical multi-stage centrifugal pump

Publications (1)

Publication Number Publication Date
CN207813944U true CN207813944U (en) 2018-09-04

Family

ID=63333087

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721751144.6U Active CN207813944U (en) 2017-12-15 2017-12-15 A kind of vertical multi-stage centrifugal pump

Country Status (1)

Country Link
CN (1) CN207813944U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113266574A (en) * 2021-05-18 2021-08-17 上海瑞邦机械集团有限公司 Light vertical multistage centrifugal pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113266574A (en) * 2021-05-18 2021-08-17 上海瑞邦机械集团有限公司 Light vertical multistage centrifugal pump

Similar Documents

Publication Publication Date Title
CN104564717A (en) Direct driven high-speed turbine vacuum pump and operation method thereof
CN207813944U (en) A kind of vertical multi-stage centrifugal pump
CN207813960U (en) A kind of vertical multi-stage centrifugal pump
CN106762681B (en) A kind of low temperature immersed pump
CN202417954U (en) Nuclear secondary pump charging pump of 1000MW nuclear power station
CN203308733U (en) Traction-level compound molecule pump
CN208294784U (en) Tangent type low specific speed immersible pump
CN209354365U (en) A kind of vertical multi-stage centrifugal pump
CN204386892U (en) Vertical dynamic levitated pump
CN2581736Y (en) Ultrahigh pressure low specific speed multi-stage centrifugal pump with double case and rigid shaft
CN109538491A (en) A kind of centrifugal multistage pump multiple centrifugal pump and its installation method with inducer
CN205578280U (en) Horizontal multi -stage centrifugal pump
CN204572499U (en) A kind of multistage vacuum pump
CN208396944U (en) Centrifugal multistage pump multiple centrifugal pump
CN201347867Y (en) Vertical centrifugal pump
CN202811392U (en) Double impeller horizontal type concentric centrifugal pump
CN208057419U (en) vertical multi-stage centrifugal pump
CN207989392U (en) Vertical centrifugal pump
CN206338210U (en) Light-duty magnetic force pump configuration
CN207064254U (en) A kind of piston type domestic water pump with temperature detecting function
CN205841184U (en) A kind of gear pump of new structure
CN205025778U (en) Specific speed canned motor pump is hanged down to tangent line type spiral case formula
CN207212692U (en) A kind of multistage spiral vortex type submersible pump
CN209067490U (en) High-efficiency energy-saving horizontal self-balanced multiple-stage centrifugal pump
CN202612117U (en) Non sealing self-sucking type multistage pump

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant