CN106438377A - Vertical multi-stage double-valve centrifugal pump and use method thereof - Google Patents
Vertical multi-stage double-valve centrifugal pump and use method thereof Download PDFInfo
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- CN106438377A CN106438377A CN201610863272.3A CN201610863272A CN106438377A CN 106438377 A CN106438377 A CN 106438377A CN 201610863272 A CN201610863272 A CN 201610863272A CN 106438377 A CN106438377 A CN 106438377A
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- water
- pump
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- pump housing
- plate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/063—Multi-stage pumps of the vertically split casing type
- F04D1/066—Multi-stage pumps of the vertically split casing type the casing consisting of a plurality of annuli bolted together
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a vertical multi-stage double-valve centrifugal pump and a use method thereof. The pump comprises a vacuum cavity with a water inlet in the bottom, a water drawing mechanism is arranged inside the vacuum cavity and comprises a pump body, the pump body is provided with a water outlet, a multi-stage impeller guide vane mechanism driven to rotate by a motor is arranged inside the pump body, and a water drawing port located in the bottom in the vacuum cavity is formed in the bottom of the pump body and is provided with a first check valve preventing water from flowing back into the vacuum cavity. The pump is simple in structure and high in lift, the vacuum internal environment can be effectively maintained, and the water can be prevented from flowing back.
Description
Technical field：
The present invention relates to a kind of vertical multi-stage bivalve centrifugal pump and using method thereof.
Background technology：
Pump is to occupy market sale rate height field in electronic product, each row, each industry, includes that rural area does not has the family of running water all few
Not with pump, middle-size and small-size pump in 1983 in 1998 manufacturers quickly develop, export volume accounts for electronic product
In first place, for employment, earn foreign exchange and make very big contribution.
From 9 years, pump industry did not had quick reform and change as other products so far, only increased similar in basic module
Type kind or to have done a little reform, therefore pump in position be that a kind of structure very simple product, in fact pump are by the look of it
The irregular highly difficult product of a kind of using area, the purposes of pump is extremely complicated, and application scenario is ever-changing, bear various respectively
Sample, the liquid of cold and hot thickness, including flow, lift, suction is all each has something to recommend him, kind is numerous and diverse, and versatility is low, brings to pump reform
Very big highly difficult, over twenties years, pump does not has high-lighting reform, belongs to the product that electromechanical industries are fallen behind most.
The common product of industrial pump, great majority are all volute type, horizontal machine panel seat, heaviness, occupy, install limited
Making, using the sleeping MODEL VERTICAL MULTISTAGE PUMP pig iron loaded down with trivial details, former casting manufacture fluid rate low, volume consumptive material greatly again, efficiency is low, do not have distortion to protect
Device, does not has back-water valve (BWV) equipment, often in use leans on repeatedly filling liquid vacuum, and start waits steam-water separation by vacuum of pouring water successively
Could normally work, after shutdown again distortion empty cisco unity malfunction is poured water once more, use process consumes the plenty of time, again
Loaded down with trivial details；Especially in field of aerospace, the requirement to water pump is higher, if occurring, liquid backflow easily causes security incident, existing
Water pump often carry out anti-backflow only with single valve, its security performance is not enough.
Content of the invention：
It is an object of the invention to provide a kind of vertical multi-stage bivalve centrifugal pump and using method, not only reasonable in design, structure
Simply, and resistance to water-flow is little, lift is high, applied widely.
To achieve these goals, the technical solution used in the present invention is：A kind of vertical multi-stage bivalve centrifugal pump, including the end
Portion is provided with the vacuum cavity of water inlet, is provided with the mechanism that draws water in described vacuum cavity, and the described mechanism that draws water includes the pump housing, institute
State and on the pump housing, be provided with delivery port, in the described pump housing, be provided with the multi-stage impeller stator mechanism ordering about rotation via motor, described
The bottom of the pump housing is provided with the bailing outlet being positioned at vacuum cavity inner bottom part, described bailing outlet is provided with and prevents aqueous reflux from returning vacuum
First check valve of cavity.
Further, the output of above-mentioned motor is provided with the rotating shaft connecting multi-stage impeller stator mechanism, on the described pump housing
It is provided with the passage installing rotating shaft, described passage is disposed with the bearing assembly for hinged rotating shaft, to bearing assembly oil
The outside framework oil seal of envelope, the seal preventing water entrance bearing assembly, on the channel side wall between described seal and outside framework oil seal
It is provided with osculum.
Further, above-mentioned multi-stage impeller stator mechanism include multiple impeller being crisscross arranged successively along water direct of travel and
Stator, described impeller orders about rotation by motor, and described stator is fixedly installed on the pump housing.
Further, above-mentioned impeller 5 includes the core wheel set 51 bonded with rotating shaft, and described core wheel set sidewall is advanced along water
Direction is disposed with become a mandarin oralia 8 and star plate 7, and described becoming a mandarin is evenly equipped with some pieces towards one between oralia 8 and star plate 7
Causing curved functional leaf 52, the described oralia 8 that becomes a mandarin includes the fairlead 81 more than core wheel set external diameter for the internal diameter, described fairlead
Lateral wall top is provided with V-shaped interior low outer high annular slab, described become a mandarin oralia and star plate external diameter equal, described star
7 weeks sides of plate are evenly equipped with several grooves 71, and the quantity of described functional leaf is equal with number of recesses, and described functional leaf is by two pieces of arcs
Plate is tangent to be formed by connecting, and the arc radius being positioned at inner side is less than outer arcuate plate internal diameter, and being designed with of this shape beneficially reduces
Resistance to water-flow, improves charging efficiency.Fairlead is closed in described functional leaf the inner, and its outer end is concordant with the oralia outer end wall that becomes a mandarin, institute
State star plate groove closing on a sidewall of functional leaf is curved wall, and this curved wall is with to be positioned at the arc in outside be concentric circles
Segmental arc, the design of those arcs, be conducive to reducing resistance to water-flow, so that water flows into from fairlead after accelerating through functional leaf from star
Plate groove throws away.The design of star plate so that the difference that this impeller exists with traditional double shrouded wheel, current are from star plate groove
Place escapes and enter stator, is conducive to increasing pressure to water, improves lift.
Further, above-mentioned stator 6 include tubular every level overlap 61, described every level set in set gradually along water direct of travel
Have with every the level set equal deflector 9 of internal diameter and the plate 62 that becomes a mandarin, described deflector 9 and become a mandarin and be provided with several courts between plate 62
To consistent arc water conservancy diversion leaf 63, being provided with the centre bore allowing rotating shaft pass through in the middle part of described deflector, described deflector periphery is equal
Being furnished with several through holes 92 around centre bores, described through hole back-end is provided with the guide channel 91 being disposed radially, and described leads
Raising successively along water direct of travel to channel roof, described deflector is outer low and inner high circular slanting ramp shaped, and described through hole closes on
Water conservancy diversion leaf madial wall outer end is arranged, and guide channel madial wall and adjacent guide leaf lateral wall are concentric circles segmental arc, and this structure designs
Being of value to and walking on current direction, and beneficially current are from lateral intermediate flow, the described plate that becomes a mandarin is high outside and low outside funnel-form, its
Middle part is provided with internal diameter more than the circular hole of rotating shaft, and described bore inner diameter is equal with fairlead external diameter, described water conservancy diversion leaf outer end with lead
Flow outside plate concordant, flush inside its inner and the plate that becomes a mandarin, guide so that water enters the diversed leaf of via through holes from guide channel
After from become a mandarin plate circular hole flow out.
Further, above-mentioned vacuum cavity includes the cylinder covering bailing outlet, and the upper end of described cylinder is docked with pump housing phase,
The lower end of described cylinder is provided with lower cover, described under cover and be provided with water inlet, described water inlet is provided with and prevents aqueous reflux
Feed back the second check valve of water end (W.E.), described under cover and be provided with base.
Further, the above-mentioned pump housing is provided with pour water plug screw and bleed screw, the described pump housing is additionally provided with to pacify
The motor cabinet of dress motor.
Further, above-mentioned delivery port is provided with adpting flange.
Further, the above-mentioned pump housing also includes pump cover and lower pump cover, and described multi-stage impeller stator mechanism is arranged on pump
Lid with lower pump cover between, the upper outer edge contact of described upper pump cover on the pump housing, its underpart contact in the top every level set
Top, described lower pump cover upper outer edge contact is in bottom every level set bottom, and described lower pump cover is locked at the pump housing by bolt
On.
In order to solve above-mentioned technical problem, the another kind of technical scheme of the present invention is：A kind of vertical multi-stage described above is double
The using method of valve centrifugal pump：The water inlet of water pump is connected with water delivery end, the delivery port of water pump is connected with water equipment
Connecing, opening water pump, multi-stage impeller stator mechanism rotates, and discharges the air in vacuum cavity and the pump housing, and water enters via check valve
Entering the pump housing, entering through impeller central, functional leaf upwards throws away from star plate groove after accelerating, and the water throwing away is along the guiding of stator
Groove enters, flow out from through hole guide through water conservancy diversion leaf after flow out from the plate circular hole that becomes a mandarin, flow through successively after multiple impeller vane from pump
Body delivery port is discharged.
Compared with prior art, the invention have the advantages that：This apparatus structure is simple, keeps environment in vacuum,
Reducing the formality that when using, exhaust is poured water, multi-stage impeller designs, and lift is high, and resistance to water-flow is little, applied widely；Double check valves
Arranging, being prevented effectively from liquid backflow, security is more preferable, and when water pump is shut down, still keeps vacuum state in can making water pump, under
Without air-discharging of pouring water again during first use, operating efficiency is high.
Brief description：
Fig. 1 is the organigram of the present invention；
Fig. 2 is the organigram of the pump housing；
Fig. 3 is the construction schematic front view of impeller；
Fig. 4 is the construction diagrammatic top view of impeller；
Fig. 5 is the organigram of star plate；
Fig. 6 is the construction schematic front view of stator；
Fig. 7 is the construction diagrammatic bottom view of middle stator；
Fig. 8 is A-A sectional view in Fig. 7.
In figure：The 1-pump housing；11-delivery port；12-adpting flange；13-bearing assembly；14-seal；15-draining plug screw；
16-pours water plug screw；17-osculum；18-passage；2-cylinder；21-water inlet；22-lower cover；23-base；25-draining plug screw；3-
Motor；31-motor cabinet；32-rotating shaft；4-the first check valve；5-impeller；51-core wheel set；52-functional leaf；6-stator；61-is every level
Set；62-becomes a mandarin plate；63-water conservancy diversion leaf；7-star plate；71-groove；8-becomes a mandarin oralia；81-fairlead；9-deflector；91-guides
Passage；92-through hole；10-the second check valve；The upper pump cover of 101-；Pump cover under 102-.
Detailed description of the invention:
As shown in Fig. 1 ~ 8, a kind of vertical multi-stage bivalve centrifugal pump of the present invention, including bottom is provided with the vacuum cavity of water inlet,
Being provided with the mechanism that draws water in described vacuum cavity, the described mechanism that draws water includes the pump housing 1, and the described pump housing 1 is provided with delivery port 11,
Being provided with the multi-stage impeller stator mechanism ordering about rotation via motor 3 in the described pump housing 1, the bottom of the described pump housing 1 is provided with position
It is provided with the first check valve 4 preventing aqueous reflux from returning vacuum cavity on the bailing outlet of vacuum cavity inner bottom part, described bailing outlet,
Water in this first check valve 4 ensure that the pump housing 1 will not flow backwards, and there is air because of flowing backwards in causing vacuum cavity, next time
Can directly initiate during use, it is not necessary to exhaust again is poured water.
In the present embodiment, the output of above-mentioned motor 3 is provided with the rotating shaft 32 connecting multi-stage impeller stator mechanism, described pump
It is provided with the passage 18 installing rotating shaft 32 on body 1, described passage 18 is disposed with the bearing assembly for hinged rotating shaft 32
13rd, outside framework oil seal, the seal 14 preventing water entrance bearing assembly 13 to bearing assembly 13 oil sealing, described seal 14 and bone
Being provided with osculum 17 on channel side wall between frame oil sealing, in the face of the rotating shaft 32 of high-speed rotation, once seal 14 is damaged, water
Entering along rotating shaft 32, the oil sealing of bearing assembly 13 is not sufficient to ensure that water does not enter in bearing assembly 13, inevitably results in axle
Bearing assembly 13 gets rusty corrosion, and then affects the life-span of whole equipment, the design of this osculum 17, seal 14 can be made to occur broken
During damage, the water entering along rotating shaft 32 is expelled directly out from this osculum 17, it is to avoid the possibility that bearing assembly 13 gets wet.
In the present embodiment, above-mentioned multi-stage impeller stator mechanism includes multiple impeller being crisscross arranged successively along water direct of travel
5 and stator 6, described impeller 5 orders about rotation by motor 3, and described stator 6 is fixedly installed on the pump housing 1, by impeller 5 with lead
Cooperating of leaf 6 so that water pump lift is higher.
In the present embodiment, above-mentioned impeller 5 of stating includes the core wheel set 51 bonded with rotating shaft, along water on described core wheel set sidewall
Direct of travel is disposed with become a mandarin oralia 8 and star plate 7, and described becoming a mandarin is evenly equipped with some pieces of courts between oralia 8 and star plate 7
To unanimously curved functional leaf 52, the described oralia 8 that becomes a mandarin includes the fairlead 81 more than core wheel set external diameter for the internal diameter, described leads
To overlap 81 lateral wall tops be provided with V-shaped in low outer high annular slab, described become a mandarin oralia 8 and star plate 7 external diameter equal,
7 weeks sides of described star plate are evenly equipped with several grooves 71, and the quantity of described functional leaf 52 is equal with groove 71 quantity, described function
Leaf 52 is formed by connecting by two pieces of arcs are tangent, and the arc radius being positioned at inner side is less than outer arcuate plate internal diameter, this shape
It is designed with beneficially reduction resistance to water-flow, improve charging efficiency.Fairlead 81 is closed in described functional leaf 52 the inner, its outer end with become a mandarin
Oralia 8 outer end wall is concordant, and the sidewall that described star plate 7 groove 71 closes on functional leaf 52 is curved wall, this curved wall with
The arc being positioned at outside is concentric circles segmental arc, the design of those arcs, is conducive to reducing resistance to water-flow, so that water is from fairlead
81 inflows throw away from star plate groove 71 after accelerating through functional leaf 52.The design of star plate 7 so that this impeller 5 closes with traditional
The difference that formula impeller exists, current escape and enter stator 6 from star plate groove 71, are conducive to increasing pressure to water, improve
Lift.
In the present embodiment, above-mentioned stator 6 include tubular every level overlap 61, described every level set 61 in along water direct of travel successively
Be provided with every the level set equal deflector 9 of 61 internal diameters and the plate 62 that becomes a mandarin, if described deflector 9 and becoming a mandarin is provided with between plate 62
Dry, towards consistent arc water conservancy diversion leaf 63, is provided with the centre bore allowing rotating shaft 32 pass through, described water conservancy diversion in the middle part of described deflector 9
Plate 9 periphery is evenly equipped with several through holes 92 around centre bore, and described through hole 92 rear end is provided with the guiding being disposed radially and leads to
Road 91, described guide channel 91 top raises successively along water direct of travel, and described deflector 9 is in outer low and inner high annular ramp
Shape, described through hole 92 closes on water conservancy diversion leaf madial wall outer end and arranges, and guide channel 91 madial wall and adjacent guide leaf lateral wall are same
Heart arc section, this structure is designed with to benefit to be walked on current direction, and beneficially current are from lateral intermediate flow, the described plate 62 that becomes a mandarin
It in high outside and low outside funnel-form, is provided with the circular hole more than rotating shaft 32 for the internal diameter in the middle part of it, outside described bore inner diameter is with fairlead 81
Footpath is equal, and described water conservancy diversion leaf 63 outer end is concordant with outside deflector 9, its inner with the plate 62 that becomes a mandarin inside flush so that water from
Guide channel 91 enters and flows out from plate 62 circular hole that becomes a mandarin after via through holes 92 diversed leaf 63 guides.
In the present embodiment, above-mentioned vacuum cavity includes the cylinder 2 covering bailing outlet, the upper end of described cylinder 2 and the pump housing 1 phase
Docking, the lower end of described cylinder 2 is provided with lower cover 22, described lower cover 22 is provided with water inlet 21, described water inlet 21 sets
It is equipped with the second check valve 10 preventing aqueous reflux from feeding back water end (W.E.), described lower cover 22 is provided with base 23, lower cover 22 and base 23
Separately design, facilitates views with unlike material and makes, reduce production cost.
In the present embodiment, the first check valve 4 and the second check valve 10 coordinate, and when water pump quits work, can make vacuum chamber
The internal vacuum state that still keeps, can directly initiate during use next time, it is not necessary to be exhausted and pour water；And bivalve arrange can
The liquid being prevented effectively from the pump housing 1 and vacuum cavity is back to fluid input port, and then causes security incident.
In the present embodiment, the above-mentioned pump housing 1 is provided with pour water plug screw 16 and bleed screw 15, the pump housing 1 is additionally provided with use
To install the motor cabinet 31 of motor 3.
In the present embodiment, above-mentioned delivery port 11 being provided with adpting flange 12, delivery port 11 is via adpting flange 12 and use
Wetting system connects.
In the present embodiment, the above-mentioned pump housing 1 also includes pump cover 101 and lower pump cover 102, described multi-stage impeller stator mechanism peace
Being contained between pump cover and lower pump cover, the upper outer edge contact of described upper pump cover is on the pump housing, and its underpart contact is in the top
Every level overlap top, described lower pump cover upper outer edge contact bottom every level overlap bottom, described lower pump cover passes through bolt lock
Tight on the pump housing.
The using method of the present invention a kind of vertical multi-stage bivalve centrifugal pump, during use：By the water inlet of water pump and water delivery end
Being connected, being connected the delivery port of water pump with water equipment, open water pump, multi-stage impeller stator mechanism rotates, by vacuum chamber
Air in body and the pump housing is discharged, and water enters the pump housing via check valve, enters through impeller central, from star plate after functional leaf acceleration
Groove upwards throws away, and the water throwing away enters along the guide groove of stator, flows out after the guiding of water conservancy diversion leaf from the plate that becomes a mandarin from through hole
Circular hole flows out, and discharges from pump housing delivery port after flowing through multiple impeller vane successively.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (10)
1. a vertical multi-stage bivalve centrifugal pump, it is characterised in that：Including bottom is provided with the vacuum cavity of water inlet, described very
Being provided with the mechanism that draws water in cavity body, the described mechanism that draws water includes the pump housing, the described pump housing is provided with delivery port, in the described pump housing
Being provided with the multi-stage impeller stator mechanism ordering about rotation via motor, the bottom of the described pump housing is provided with and is positioned at the bottom of vacuum cavity
The bailing outlet in portion, described bailing outlet is provided with the first check valve preventing aqueous reflux from returning vacuum cavity.
2. vertical multi-stage bivalve centrifugal pump according to claim 1, it is characterised in that：The output of described motor is provided with
Connect the rotating shaft of multi-stage impeller stator mechanism, the described pump housing is provided with the passage installing rotating shaft, described passage sets gradually
Have the bearing assembly for hinged rotating shaft, the outside framework oil seal to bearing assembly oil sealing, the seal preventing water entrance bearing assembly,
It is provided with osculum on channel side wall between described seal and outside framework oil seal.
3. vertical multi-stage bivalve centrifugal pump according to claim 2, it is characterised in that：Described multi-stage impeller stator mechanism bag
Including multiple impeller being crisscross arranged successively along water direct of travel and stator, described impeller orders about rotation, described stator by motor
It is fixedly installed on the pump housing.
4. vertical multi-stage bivalve centrifugal pump according to claim 3, it is characterised in that：Described impeller includes being bonded with rotating shaft
The core wheel set connecing, described core wheel set sidewall is disposed with, along water direct of travel, become a mandarin oralia and star plate, described enter head piece
Be evenly equipped with between plate and star plate some pieces towards unanimously curved functional leaf, the described oralia that becomes a mandarin include an internal diameter more than wheel
The fairlead of heart set external diameter, described fairlead lateral wall top is provided with V-shaped interior low outer high annular slab, described enter head piece
Plate and star plate external diameter are equal, and all sides of described star plate are evenly equipped with several grooves, the quantity of described functional leaf and number of recesses
Equal, described functional leaf is formed by connecting by two pieces of arcs are tangent, and the arc radius being positioned at inner side is less than outer arcuate plate
Footpath, described functional leaf the inner closes on fairlead, and its outer end is concordant with the oralia outer end wall that becomes a mandarin, and described star plate groove closes on function
One sidewall of leaf is curved wall, this curved wall be positioned at outside arc be concentric circles segmental arc so that water is from fairlead
Flow into and throw away from star plate groove after accelerating through functional leaf.
5. vertical multi-stage bivalve centrifugal pump according to claim 4, it is characterised in that：Described stator include tubular every level
Set, described being disposed with along water direct of travel in level set overlap the equal deflector of internal diameter and the plate that becomes a mandarin with every level, described leads
Stream plate and becoming a mandarin be provided with between plate several towards consistent arc water conservancy diversion leaf, be provided with in the middle part of described deflector and allow rotating shaft wear
The centre bore crossed, described deflector periphery is evenly equipped with several through holes around centre bore, and described through hole back-end is provided with along footpath
To the guide channel arranging, described guide channel top raises successively along water direct of travel, and described deflector is outer low and inner high
Circular slanting ramp shaped, described through hole closes on water conservancy diversion leaf madial wall outer end and arranges, guide channel madial wall and adjacent guide leaf lateral wall
For concentric circles segmental arc, the described plate that becomes a mandarin is high outside and low outside funnel-form, is provided with the circular hole more than rotating shaft for the internal diameter in the middle part of it, described
Bore inner diameter is equal with fairlead external diameter, and described water conservancy diversion leaf outer end is concordant with outside deflector, its inner with the plate that becomes a mandarin inside phase
Concordant, flow out from the plate circular hole that becomes a mandarin after the diversed leaf of via through holes guides so that water enters from guide channel.
6. vertical multi-stage bivalve centrifugal pump according to claim 1, it is characterised in that：Described vacuum cavity includes covering and draws
The cylinder at the mouth of a river, the upper end of described cylinder docks with pump housing phase, and the lower end of described cylinder is provided with lower cover, described under cover setting
Have water inlet, described water inlet be provided with the second check valve preventing aqueous reflux from feeding back water end (W.E.), described under cover and be provided with the end
Seat.
7. vertical multi-stage bivalve centrifugal pump according to claim 1, it is characterised in that：It is provided with, on the described pump housing, spiral shell of pouring water
Plug and bleed screw, the described pump housing is additionally provided with to install the motor cabinet of motor.
8. vertical multi-stage bivalve centrifugal pump according to claim 1, it is characterised in that：It is provided with connection on described delivery port
Flange.
9. vertical multi-stage bivalve centrifugal pump according to claim 5, it is characterised in that：The described pump housing also include pump cover and
Lower pump cover, described multi-stage impeller stator mechanism is arranged between pump cover and lower pump cover, the upper outer edge top of described upper pump cover
Be against on the pump housing, its underpart contact the top every level overlap top, described lower pump cover upper outer edge contact bottom every
Level set bottom, described lower pump cover is locked on the pump housing by bolt.
10. the using method of a vertical multi-stage bivalve centrifugal pump as claimed in claim 5, it is characterised in that：By water pump
Water inlet is connected with water delivery end, is connected the delivery port of water pump with water equipment, opens water pump, multi-stage impeller stator mechanism
Rotating, discharging the air in vacuum cavity and the pump housing, water enters the pump housing via check valve, enters through impeller central, functional leaf
Upwards throwing away from star plate groove after acceleration, the water throwing away enters along the guide groove of stator, flows out through water conservancy diversion leaf from through hole
Flow out from the plate circular hole that becomes a mandarin after guiding, discharge from pump housing delivery port after flowing through multiple impeller vane successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610863272.3A CN106438377B (en) | 2016-09-29 | 2016-09-29 | Vertical multi-stage bivalve centrifugal pump and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610863272.3A CN106438377B (en) | 2016-09-29 | 2016-09-29 | Vertical multi-stage bivalve centrifugal pump and its application method |
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| Publication Number | Publication Date |
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| CN106438377A true CN106438377A (en) | 2017-02-22 |
| CN106438377B CN106438377B (en) | 2018-11-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812423A (en) * | 2017-11-18 | 2019-05-28 | 浙江豪贝泵业股份有限公司 | A kind of self priming pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109812423A (en) * | 2017-11-18 | 2019-05-28 | 浙江豪贝泵业股份有限公司 | A kind of self priming pump |
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| Publication number | Publication date |
|---|---|
| CN106438377B (en) | 2018-11-27 |
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