CN109268307B - A kind of centrifugal urea dispenser pump - Google Patents
A kind of centrifugal urea dispenser pump Download PDFInfo
- Publication number
- CN109268307B CN109268307B CN201811242542.4A CN201811242542A CN109268307B CN 109268307 B CN109268307 B CN 109268307B CN 201811242542 A CN201811242542 A CN 201811242542A CN 109268307 B CN109268307 B CN 109268307B
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- Prior art keywords
- impeller
- nut
- ring
- drive shaft
- face
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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
-
- 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
- F04D29/18—Rotors
- F04D29/185—Rotors consisting of a plurality of wheels
-
- 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
- F04D29/20—Mounting rotors on shafts
-
- 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
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing 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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
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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 belongs to urea filling pump technical field more particularly to a kind of centrifugal urea dispenser pumps, it includes centrifugal pump body, attachment device etc., is wherein provided with inlet tube and outlet tube on pump case；Urea dispenser pump in the present invention has the first impeller and the second impeller, there is external screw thread at two in drive shaft, first impeller and the second impeller are symmetrical, so the first impeller is opposite with the axial force that the second impeller is subject to, when the first impeller and the second impeller are when occurring play, first nut will move together, first nut will form screw-driven with the external screw thread in drive shaft, so that the first nut will change with respect to the installation site of the second nut, the liquid inventory at the first impeller or the second impeller inlet at this time will change, so that the axial force that the first impeller is subject to the second impeller is changed, so that the first impeller is opposite with the axial force size same direction that the second impeller is subject to, the purpose for offsetting extra axial force.
Description
Technical field
The invention belongs to urea filling pump technical field more particularly to a kind of centrifugal urea dispenser pumps.
Background technique
The axial action for being directed toward the suction inlet of pump always is generated on the impeller of current existing urea dispenser pump, to make
Obtaining impeller will be along axial direction to suction inlet side play, to can cause the concussion and abrasion of impeller；The presence of the axial force simultaneously
Also by the serious service life for reducing bearing, extremely disadvantageous influence is generated to the work of centrifugal pump, after a period of use, because
Urea for vehicle solution, which is corrosive, causes between axis and axle envelope that there are leakage phenomenons, not only affects the normal use of charging machine and right
Environment causes a degree of pollution；Simultaneously for vehicle exhaust is effectively reduced to pollution caused by atmospheric environment, country is in succession
Fourth, fifth stage fuel oil for vehicles national standard is issued and implemented, 13 planning periods were distinctly claimed nitrogen oxide emission.SCR
(SCR technology) technology becomes current IV standard one preferred technique of diesel engine state, and urea for vehicle solution is indispensable match
Product is covered, charging machine comes into being therewith.There are leakage phenomenons between axis and axle envelope caused by being corrosive because of urea for vehicle solution, no
It only affects the normal use of charging machine and a degree of pollution is caused to environment；Add so designing a kind of centrifugal urea
Note pump is necessary.
The present invention design a kind of centrifugal urea dispenser pump solve the problems, such as it is as above.
Summary of the invention
(1) the technical problem to be solved in the present invention
The problem to be solved in the present invention is to provide a kind of centrifugal urea dispenser pumps, to overcome urea filling in the prior art
The axial action for being directed toward the suction inlet of pump always is generated on the impeller of pump, so that impeller will be along axial direction to suction inlet side
Play, so that the concussion and abrasion of impeller can be caused；The presence of the axial force simultaneously is also by the serious service life for reducing bearing
The problem of；There are leakage phenomenons between axis and axle envelope caused by being corrosive because of urea for vehicle solution.
(2) technical solution of the present invention
To solve drawbacks described above in the prior art, the present invention discloses a kind of centrifugal urea dispenser pump, it be use with
Lower technical solution is realized.
A kind of centrifugal urea dispenser pump, it is characterised in that: it includes centrifugal pump body, attachment device, power distribution cabinet, motor dress
It sets, wherein centrifugal pump body is mounted on electric machine by attachment device；Power distribution cabinet is provided on electric machine；Power distribution cabinet and electricity
It is electrically connected between machine device.
The centrifugal pump body includes impeller unit, outlet tube, inlet tube, pump case, drive shaft, partition, is wherein set on pump case
It is equipped with inlet tube and outlet tube；It is provided in pump case and pump case internal cavity is divided into admission chamber and the out partition of sap cavity；Impeller dress
It sets and is mounted in pump case；In the drive shaft insertion pump case connecting with electric machine, and drive shaft penetrates band movable vane in impeller unit
Wheel apparatus rotary motion.
Be provided with external screw thread at two on the drive shaft periphery, and this be arranged at two on external screw thread and impeller unit two
Nut formation in a symmetrical impeller is threadedly engaged, so that when impeller unit is axially altered by solution responsive to axial force
When dynamic, it will pull the nut in impeller to move axially relative to drive shaft, the nut in impeller will with it is outer in drive shaft
Screw-driven occurs for screw thread, so that the nut in impeller rotates by a certain angle, the nut in impeller will be with the spiral shell of fastening impeller
Female collective effect changes the flow for entering solution in impeller unit, achievees the purpose that weaken the axial force that impeller unit is subject to；Leaf
The impeller of two symmetrical impellers being arranged on wheel apparatus, side accelerates the solution come in by inlet tube, the side
Solution after impeller accelerates flows out pump case by outlet tube after being accelerated in the impeller that pipeline flows into the other side；Outlet tube
The small part solution of outflow will cool down to the rotor at electric machine by cooling duct, after through return flow line enter feed liquor
Pressurization cycle is participated in after pipe again.The prior art is used for the design of cooling duct.
It is advanced optimized as this technology, the electric machine includes the second fixed ring, stator winding, p-m rotor, lock
Tight nut, rear end cap, machine barrel, wherein stator winding is mounted in machine barrel by multiple second fixed rings；P-m rotor is nested in
On the outside of drive shaft, and p-m rotor is located in stator winding；Drive shaft and p-m rotor are fixed together by lock nut；Rear end
Lid is mounted on machine barrel end face by bolt；It is electrically connected between p-m rotor and stator winding and power distribution cabinet.
It being advanced optimized as this technology, the attachment device includes connecting flange, connects boss, support rim, wherein
Connecting flange one end is provided with connection boss and support rim；Connecting flange is not provided with connection boss and support rim one end is logical
Bolt is crossed to be mounted on machine barrel；Support rim is used to support drive shaft, and passes through stationary ring ceramics between support rim and drive shaft
It is coupled with rotating ring ceramics.
It is advanced optimized as this technology, the first shaft hole of support drive shaft, and first axle is additionally provided on the pump case
It is coupled between hole and drive shaft by axle sleeve；The end face of pump case one end is fixedly mounted on connection raised head face.
It is advanced optimized as this technology, the impeller unit includes the first impeller, the second impeller, solution line, first
Fixed ring, fixed plate, the first arc shell, the second arc shell, the first fluid hole, connection ring, the second fluid hole, accommodating chamber, cover board,
Spring mounting ring, buffer spring, the second sealing device, inlet opening, the second axis hole, the shaft shoulder, movement set, limited ring groove, guide groove, limit
Position ring, guide block, the first nut, the second nut, T shape ring, first sealing device, T shape annular groove, wherein the end of first arc shell one end
The protrusion of toroidal is provided at the center of face；Multiple second fluid holes are provided on first arc shell extrados；Second arc shell
The protrusion of toroidal is provided at the end face center of one end；Multiple first fluid holes are provided on second arc shell extrados；The
One arc shell is identical with the second arc shell shape size；It is fixed between first arc shell and the second arc shell by connection ring
It links together, and the protrusion of the first arc shell and the toroidal on the second arc shell is distributed far from connection ring；Connection ring
Accommodating chamber is provided on inner headed face；There is first arc shell raised one end of toroidal to be fixedly mounted on partition end face；Second
There is arc shell raised one end of toroidal to be fixedly installed with the first fixed ring, and be symmetrically installed on the first fixed ring periphery
There are two fixed plates；Fixed plate is fixedly mounted on the internal cavity wall surface of pump case far from one end of the first fixed ring；Cover board end face
The second axis hole of perforation is provided at center；Cover board is coupled by first sealing device and drive shaft, and cover board one end is fixed
It is mounted on the end face of the second arc shell；Inlet opening corresponding with multiple second fluid holes, and feed liquor are provided on cover board end face
It is communicated between hole and the second fluid hole by solution line connection；Guide block there are two being symmetrically installed on the periphery of drive shaft；Fortune
Guide groove there are two symmetrically being opened on dynamic set inner headed face；Restraining position ring block is set on periphery at movement set guide groove position；Spring installation
Limited ring groove is provided on ring inner headed face；Spring mounting ring is mounted on outside movement set by stop collar and being rotatably assorted for limited ring groove
Side；It is symmetrical arranged that there are two play the role of positioning to the first impeller and the second impeller on movement set periphery about spring mounting ring
The shaft shoulder；Movement set being slidably installed on the driving shaft by guide groove and guide block, and spring mounting ring is located in accommodating chamber；Even
The inner headed face for connecing the accommodating chamber two sides on ring passes through the second sealing device and is coupled with movement set periphery；Spring mounting ring
Two sides be symmetrically distributed with multiple groups buffer spring, buffer spring one end is fixedly mounted on spring mounting ring end face, buffer spring
The other end, which is fixedly mounted on, to be accommodated on resonator end surface；First impeller is symmetrically mounted on movement with the second impeller and puts on, and the first impeller
In the first arc shell, the second impeller is located in the second arc shell；First impeller and the second impeller and movement cover the upper shaft shoulder
It is engaged.
First impeller is symmetrical about spring mounting ring with the second impeller place mounting structure, at the first impeller
Institute's mounting structure, the second nut with upper externally threaded be threadedly engaged of movement set by being fastened on movement for the first impeller and putting on；
T shape annular groove is provided on second nut end face；T shape ring is installed in T shape annular groove；First nut one end is fixedly mounted on T shape ring end
On face, and the first nut is threadedly engaged with the external screw thread formation in drive shaft.
It is advanced optimized as this technology, first impeller is identical with structure in the second impeller, and the first impeller
It is symmetrical about spring mounting ring with structure installation site in the second impeller, for the first impeller it include the first fast pulley,
Second fast pulley, blade, boss, wherein being provided with the boss for being compressed by the second nut on the second fast pulley；Second is fixed
Wheel is equipped with multiple blades with circumferentially uniform on one end end face of boss；Have at the end face center of first fast pulley one end
The protrusion of toroidal；First fast pulley does not have the end face of the protrusion of toroidal to be fixedly mounted in multiple vane end faces, and
There is the circular hole of perforation at first fast pulley end face center.
It is advanced optimized as this technology, second fast pulley is engaged with the shaft shoulder；Second nut by with movement
External screw thread formation, which is threadedly engaged, on set is pressed on boss.
It is advanced optimized as this technology, there is loudspeaker at the end face center of first fast pulley one end in first impeller
The male cooperation of toroidal is provided at the protrusion of the degree of lip-rounding and the end face center of first arc shell one end；In second impeller
It is arranged at protrusion and the end face center of second arc shell one end at the end face center of first fast pulley one end with toroidal
There is the male cooperation of toroidal.
It is advanced optimized as this technology, two set external screw threads are with respect to the first impeller and second in the drive shaft
The setting position of two the first nuts in impeller is that two the first nuts are located between two external screw threads in drive shaft.
It is advanced optimized as this technology, two set external screw threads are with respect to the first impeller and second in the drive shaft
The setting position of two the first nuts in impeller is that two the first nuts are located on the outside of two external screw threads in drive shaft.
(3) the advantages of the present invention
Relative to traditional urea dispenser pump technology, the urea dispenser pump in the present invention has the first impeller and the second leaf
Wheel, and is provided with external screw thread at two on the driving shaft, the first impeller and the second impeller be it is symmetrical, so the first impeller and
The axial force that second impeller is subject to be it is opposite, the first impeller is installed in movement with the second impeller and puts on, when the first impeller with
Second impeller is when occurring play, it will so that the first nut installed thereon moves together, the first nut will be with driving
External screw thread on axis forms screw-driven, so that the first nut will change with respect to the installation site of the second nut, this
When the first impeller or the second impeller inlet at liquid inventory will change so that the first impeller and the second impeller
The axial force being subject to is changed, so that the first impeller and the axial force size that the second impeller is subject to are identical but contrary, is reached
The purpose that the axial force being subject to impeller unit can be offset；According to urea for vehicle solution alkaline, the big feature of corrosivity, in original
The corrosion-resistant stainless steel pump housing is selected on material, axle envelope is by being changed to full immersed type outside being originally exposed to.
Detailed description of the invention
Fig. 1 is centrifugal pump body component distribution schematic diagram.
Fig. 2 is impeller unit mounting structure schematic diagram.
Fig. 3 is the first impeller installing schematic diagram.
Fig. 4 is the second impeller installing schematic diagram.
Fig. 5 is pump shell structure (one) schematic diagram.
Fig. 6 is pump shell structure (two) schematic diagram.
Fig. 7 is partition mounting structure schematic diagram.
Fig. 8 is solution line mounting structure schematic diagram.
Fig. 9 is the first fixed ring mounting structure schematic diagram.
Figure 10 is axle sleeve mounting structure schematic diagram.
Figure 11 is the first arc shell mounting structure schematic diagram.
Figure 12 is the second arc shell mounting structure schematic diagram.
Figure 13 is the second arc shell structure schematic diagram.
Figure 14 is the first arc shell structure schematic diagram.
Figure 15 is cover plate installation structure schematic diagram.
Figure 16 is buffer spring mounting structure schematic diagram.
Figure 17 is covering plate structure schematic diagram.
Figure 18 is spring mounting ring mounting structure schematic diagram.
Figure 19 is the first nut mounting structure schematic diagram.
Figure 20 is spring mounting ring structural schematic diagram.
Figure 21 is movement nested structure schematic diagram.
Figure 22 is guide block mounting structure schematic diagram.
Figure 23 is the first nut structure diagram.
Figure 24 is the first nut and the second nut mounting structure schematic diagram.
Figure 25 is T shape ring mounting structure schematic diagram.
Figure 26 is blade installation structure schematic diagram.
Figure 27 is the first fast pulley structural schematic diagram.
Figure 28 is the second fast pulley and blade installation structure schematic diagram.
Figure 29 is the second fast pulley structural schematic diagram.
Figure 30 is solution flowing flow diagram.
Figure 31 is external screw thread position (one) schematic diagram in the first nut and drive shaft.
Figure 32 is external screw thread position (two) schematic diagram in the first nut and drive shaft.
Figure 33 is the second nut structure diagram.
Figure 34 is overall structure diagram.
Figure 35 is power distribution cabinet mounting structure schematic diagram.
Figure 36 is attachment device mounting structure schematic diagram.
Figure 37 is electric machine structural schematic diagram.
Figure 38 is lock nut mounting structure schematic diagram.
Figure 39 is attachment device structural schematic diagram.
Figure label title: 1, outlet tube；2, inlet tube；3, pump case；4, drive shaft；5, partition；6, the first impeller；7,
Two impellers；8, first shaft hole；9, solution line；10, the first fixed ring；11, fixed plate；12, axle sleeve；13, the first arc shell；
14, the second arc shell；15, the first fluid hole；16, connection ring；17, the second fluid hole；18, accommodating chamber；19, cover board；20, spring
Mounting ring；21, buffer spring；22, the second sealing device；23, inlet opening；24, the second axis hole；25, the shaft shoulder；26, movement set；
27, limited ring groove；28, guide groove；29, stop collar；30, guide block；31, the first nut；32, the second nut；33, T shape ring；34,
One fast pulley；35, the second fast pulley；36, blade；37, boss；38, first sealing device；39, T shape annular groove；40, impeller fills
It sets；41, centrifugal pump body；42, attachment device；43, power distribution cabinet；44, electric machine；47, the second fixed ring；48, stator winding；
49, p-m rotor；50, lock nut；51, rear end cap；52, machine barrel；53, connecting flange；54, boss is connected；55, it supports convex
Platform.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
As shown in Figure 34,35,36, it includes centrifugal pump body 41, attachment device 42, power distribution cabinet 43, electric machine 44, wherein
Centrifugal pump body 41 is mounted on electric machine 44 by attachment device 42；As shown in figure 36, power distribution cabinet is provided on electric machine
43；It is electrically connected between power distribution cabinet 43 and electric machine 44.
As shown in Figure 1, 2, 3, the centrifugal pump body 41 includes impeller unit 40, outlet tube 1, inlet tube 2, pump case 3, driving
Axis 4, partition 5, as shown in figure 5, being wherein provided with inlet tube 2 and outlet tube 1 on pump case 3；As shown in Figure 6,7, setting in pump case 3
Have and 3 internal cavity of pump case is divided into admission chamber and the out partition 5 of sap cavity；As shown in figure 4, impeller unit 40 is mounted in pump case 3；
The drive shaft 4 connecting with electric machine 44 is inserted into pump case 3, and drive shaft 4 penetrates impeller device 40 in impeller unit 40
Rotary motion.
It is provided with external screw thread at two on 4 periphery of drive shaft, and this is arranged at two on external screw thread and impeller unit 40
Two symmetrical impellers in nut formation be threadedly engaged so that when impeller unit 40 by solution responsive to axial force
When axial float, it will pull the nut in impeller to move axially relative to drive shaft 4, the nut in impeller will be with drive shaft
Screw-driven occurs for the external screw thread on 4, so that the nut in impeller rotates by a certain angle, the nut in impeller will be with fastening leaf
The nut collective effect of wheel changes the flow for entering solution in impeller unit 40, reaches and weakens the axial force that impeller unit 40 is subject to
Purpose；Two symmetrical impellers being arranged on impeller unit 40, the impeller of side is to the solution come in by inlet tube 2
Accelerate, the solution after the impeller of the side accelerates flows after being accelerated in the impeller that pipeline flows into the other side by outlet tube 1
Pump case 3 out；The small part solution that outlet tube 1 flows out will cool down to the rotor at electric machine 44 by cooling duct, later
Pressurization cycle is participated in again after return flow line enters inlet tube 2.
As shown in Figure 37,38, the electric machine 44 includes the second fixed ring 47, stator winding 48, p-m rotor 49, lock
Tight nut 50, rear end cap 51, machine barrel 52, wherein stator winding 48 is mounted in machine barrel 52 by multiple second fixed rings 47；Forever
Magnet rotor 49 is nested in 4 outside of drive shaft, and p-m rotor 49 is located in stator winding 48；Lock nut 50 by drive shaft 4 with
P-m rotor 49 is fixed together；Rear end cap 51 is mounted on 52 end face of machine barrel by bolt；P-m rotor 49 and stator winding
It is electrically connected between 48 and power distribution cabinet 43.
As shown in figure 39, the attachment device 42 includes connecting flange 53, connection boss 54, support rim 55, wherein connecting
53 one end of acting flange is provided with connection boss 54 and support rim 55；Connecting flange 53 is not provided with connection boss 54 and supports convex
55 one end of platform is mounted on machine barrel 52 by bolt；Support rim 55 is used to support drive shaft 4, and support rim 55 and drive shaft
It is coupled between 4 by stationary ring ceramics and rotating ring ceramics.
As shown in figure 5, being additionally provided with the first shaft hole 8 of support drive shaft 4 on the pump case 3, and first shaft hole 8 and driving
It is coupled between axis 4 by axle sleeve 12；The end face of 3 one end of pump case is fixedly mounted on connection 54 end face of boss.
As shown in figure 8, the impeller unit 40 includes the first impeller 6, the second impeller 7, solution line 9, the first fixed ring
10, fixed plate 11, the first arc shell 13, the second arc shell 14, the first fluid hole 15, connection ring 16, the second fluid hole 17, receiving
Chamber 18, cover board 19, spring mounting ring 20, buffer spring 21, the second sealing device 22, inlet opening 23, the second axis hole 24, the shaft shoulder
25, movement set 26, limited ring groove 27, guide groove 28, stop collar 29, guide block 30, the first nut 31, the second nut 32, T shape ring 33,
First sealing device 38, T shape annular groove 39, as shown in Figure 11,12,13, wherein being set at the end face center of 13 one end of the first arc shell
It is equipped with the protrusion of toroidal；As shown in figure 14, multiple second fluid holes 17 are provided on 13 extrados of the first arc shell；Second arc
The protrusion of toroidal is provided at the end face center of 14 one end of shape shell；Multiple first are provided on second arc shell, 14 extrados to go out
Fluid apertures 15；First arc shell 13 is identical with 14 shape size of the second arc shell；As shown in figure 12, the first arc shell 13 and
It is fixed together between two arc shells 14 by connection ring 16, and the loudspeaker on the first arc shell 13 and the second arc shell 14
The protrusion of the degree of lip-rounding is distributed far from connection ring 16；As shown in figure 13, accommodating chamber 18 is provided on 16 inner headed face of connection ring；First arc
There is shell 13 raised one end of toroidal to be fixedly mounted on 5 end face of partition；Second arc shell 14 has the convex of toroidal
It plays one end and is fixedly installed with the first fixed ring 10, as shown in figure 9, and being symmetrically installed that there are two solid on 10 periphery of the first fixed ring
Fixed board 11；Fixed plate 11 is fixedly mounted on the internal cavity wall surface of pump case 3 far from one end of the first fixed ring 10；Such as Figure 17 institute
Show, the second axis hole 24 of perforation is provided at 19 end face center of cover board；Cover board 19 is cooperated by first sealing device 38 and drive shaft 4
Installation, and 19 one end of cover board is fixedly mounted on the end face of the second arc shell 14；It is provided on 19 end face of cover board and goes out with multiple second
The corresponding inlet opening 23 of fluid apertures 17, and communicated between inlet opening 23 and the second fluid hole 17 by the connection of solution line 9；Such as figure
22, it shown in 23, is symmetrically installed on the periphery of drive shaft 4 there are two guide block 30；As shown in figure 21, right on 26 inner headed faces of movement set
Title is opened there are two guide groove 28；As shown in figure 21, restraining position ring block 29 is set on the periphery at movement set 26 guide groove, 28 position；Such as figure
Shown in 20, limited ring groove 27 is provided on 20 inner headed face of spring mounting ring；As shown in figure 19, spring mounting ring 20 passes through stop collar 29
26 outside of movement set is mounted on being rotatably assorted for limited ring groove 27；It is symmetrical about spring mounting ring 20 on movement 26 peripheries of set
The shaft shoulder 25 to play the role of positioning there are two being arranged to the first impeller 6 and the second impeller 7；Movement set 26 passes through guide groove 28 and guide block 30
Be slidably installed in drive shaft 4, and spring mounting ring 20 is located in accommodating chamber 18；18 liang of accommodating chamber in connection ring 16
The inner headed face of side passes through the second sealing device 22 and is coupled with movement 26 peripheries of set；The two sides of spring mounting ring 20 are symmetrical
Multiple groups buffer spring 21 is distributed with, 21 one end of buffer spring is fixedly mounted on 20 end face of spring mounting ring, and buffer spring 21 is another
One end is fixedly mounted on 18 end face of accommodating chamber；As shown in Figure 15,16,20, the first impeller 6 is symmetrically mounted on the second impeller 7
On movement set 26, and the first impeller 6 is located in the first arc shell 13, and the second impeller 7 is located in the second arc shell 14；First impeller
6 are engaged with the shaft shoulder 25 on the second impeller 7 and movement set 26.
As shown in Figure 10,26, the first impeller 6 and 7 place mounting structure of the second impeller symmetrically divide about spring mounting ring 20
Cloth, for institute's mounting structure at the first impeller 6, as shown in figure 19, the second nut 32 is by covering the external screw thread on 26 with movement
Be threadedly engaged by the first impeller 6 be fastened on movement set 26 on；As shown in figure 33, T shape annular groove is provided on 32 end face of the second nut
39；As shown in figure 25, T shape ring 33 is installed in T shape annular groove 39；As shown in figure 24,31 one end of the first nut is fixedly mounted on T shape
On 33 end face of ring, and the first nut 31 is threadedly engaged with the external screw thread formation in drive shaft 4.
As shown in Figure 18,26, first impeller 6 is identical with structure in the second impeller 7, and the first impeller 6 and
Structure installation site is symmetrical about spring mounting ring 20 in two impellers 7, and for the first impeller 6, it includes the first fast pulley
34, the second fast pulley 35, blade 36, boss 37, as shown in Figure 28,29, wherein being provided on the second fast pulley 35 for by
The boss 37 that two nuts 32 compress；Second fast pulley 35 is equipped with multiple leaves with circumferentially uniform on one end end face of boss 37
Piece 36；As shown in figure 27, with the protrusion of toroidal at the end face center of 34 one end of the first fast pulley；First fast pulley 34 is not
There is the end face of the protrusion of toroidal to be fixedly mounted on multiple 36 end faces of blade, and has at 34 end face center of the first fast pulley
The circular hole of perforation.
Second fast pulley 35 is engaged with the shaft shoulder 25；Second nut 32 is by covering the external screw thread shape on 26 with movement
It is pressed on boss 37 at being threadedly engaged.
Protrusion and first at the end face center of 34 one end of the first fast pulley in first impeller 6 with toroidal
The male cooperation of toroidal is provided at the end face center of 13 one end of arc shell；The first fast pulley 34 1 in second impeller 7
Toroidal is provided at protrusion and the end face center of 14 one end of the second arc shell at the end face center at end with toroidal
Male cooperation.
As shown in figure 31, two external screw threads set in the drive shaft 4 are with respect in the first impeller 6 and the second impeller 7
The setting positions of two the first nuts 31 be that two the first nuts 31 are located between two external screw threads in drive shaft 4.
As shown in figure 32, two external screw threads set in the drive shaft 4 are with respect in the first impeller 6 and the second impeller 7
The setting positions of two the first nuts 31 be that two the first nuts 31 are located on the outside of two external screw threads in drive shaft 4.
Specific embodiment are as follows: the size influence factor for the axial force being subject to due to the impeller in centrifugal pump is more, import
Locate flow variation on impeller by centrifugal force size is influenced situation, need according to specific centrifugal pump carry out analogue simulation reality
It tests with multiple experiment and determines；Two external screw threads set in drive shaft 4 are with respect to the first impeller 6 and the second leaf in the present invention
The setting position of two the first nuts 31 in wheel 7 has two schemes, needs to be adjusted according to actual demands of engineering.At this
Setting in invention for two kinds of two external screw threads of selection with respect to two the first nuts 31 in the first impeller 6 and the second impeller 7
Location schemes be do not do it is disclosed；But the step of how selecting is described.
Setting position of two external screw threads with respect to two the first nuts 31 in the first impeller 6 and the second impeller 7 in the present invention
It is equipped with following two: according to the needs and many experiments of engineering, when movement set 26 is to 6 direction axial float of the first impeller, saying
The axial force that bright the first impeller 6 at this time is subject to is greater than the axial force that the second impeller 7 is subject to；The first installation site: two
One nut 31 is located between two external screw threads in drive shaft 4, the axial force that the first impeller 6 and the second impeller 7 at this time is subject to
To be directed toward the first impeller 6, movement set 26 at this time will move resultant force to the direction of the first impeller 6, the movement set 26 of movement
The second nut 32 will be driven to be axially moved to 2 direction of inlet tube by the external screw thread opened thereon；The second nut 32 at this time will
The first nut 31 is driven to be axially moved to 2 direction of inlet tube by T shape ring 33, the first nut 31 at this time will be with drive shaft 4
On external screw thread screw-driven occurs, the position of opposite second nut 32 of the first nut 31 on the first impeller 6 at this time can be sent out
Changing；But the first nut 31 on the second impeller 7 will also follow movement set 26 to do to the axial direction close to 2 direction of inlet tube
Movement, since the first nut 31 on the second impeller 7 is threadedly engaged with not formed at 4 cooperation of drive shaft, so at this time second
The position of opposite second nut 32 of the first nut 31 on impeller 7 does not change；The first nut 31 at first impeller 6 is opposite
After the installation site of second screw thread obtains adjusting, it will so that change into the liquid inventory in the first impeller 6, if from
When heart pump works normally again, movement set 26 at this time will be eased to the axial float displacement in 2 direction of inlet tube, say
It is bright when having adjusted the installation site of the first nut 31 and the second nut 32 on the first impeller 6, the first impeller 6 and the second impeller
The 7 axial resultant forces being subject to reduce；Continue to select different screw threads to drive shaft 4 and the first nut 31, until when centrifugation pump work
When, the first impeller 6 and the second impeller 7 will not be in axial direction until plays, the first nut 31 at this time and the spiral shell in drive shaft 4
Line is experiment optimum value, can be completely eliminated the centrifugal force on the impeller on centrifugal pump using the screw thread of the numerical value, to reach
To protection centrifugal pump bearing, extend the purpose of centrifugal pump service life；If centrifugal pump works normally again, movement at this time
Set 26 will will increase to the axial float displacement in 2 direction of inlet tube, illustrate having adjusted the first nut 31 on the first impeller 6
When with the installation site of the second nut 32, the axial direction that the first impeller 6 and the second impeller 7 are subject to increases with joint efforts, just needs at this time
Second of installation site, two the first nuts 31 are located on the outside of two external screw threads in drive shaft 4；Continue the first installation site
When work, until when the centrifugal pump is operated, the first impeller 6 and the second impeller 7 will not be in axial direction until plays, at this time
First nut 31 is experiment optimum value with the screw thread in drive shaft 4, can be by the impeller on centrifugal pump using the screw thread of the numerical value
On centrifugal force completely eliminate, to reach protection centrifugal pump bearing, extend the purpose of centrifugal pump service life.
When the centrifugal pump in the present invention works normally, as shown in figure 30, solution will be entered by inlet tube 2 and be pumped first
In shell 3, under the action of partition 5, solution will enter the first impeller 6 on the first fast pulley 34 and the second fast pulley 35 it
Between；Drive shaft 4 at this time will drive 26 movement of movement set by the cooperation of guide block 30 and guide groove 28, and movement set 26 will pass through
Key drives the second fast pulley 35 on the first impeller 6 to make rotating motion, and the second fast pulley 35 will will drive leaf mounted thereto
Piece 36 makes rotating motion, and blade 36 will accelerate between the first fast pulley 34 and the second fast pulley 35 on the first impeller 6
Solution, solution by acceleration enters in the first arc shell 13, and the solution in the first arc shell 13 will pass through solution line 9
19 side of cover board is flowed into, hence between the first fast pulley 34 and the second fast pulley 35 on the second impeller 7；Power distribution cabinet 43 will
Stator winding 48 and p-m rotor 49 can be acted on, so that 4 rotary motion of drive shaft；Drive shaft 4 at this time will pass through
The cooperation of guide block 30 and guide groove 28 drives 26 movement of movement set, movement set 26 will key drive it is second on the second impeller 7 fixed
Wheel 35 makes rotating motion, and the second fast pulley 35 makes rotating motion will drive blade 36 mounted thereto, and blade 36 will add
Speed enters the solution between the first fast pulley 34 and the second fast pulley 35 on the second impeller 7, and solution by acceleration enters the
In two arc shells 14, then the first fluid hole 15 outflow opened from the second arc shell 14；Pump case 3 is flowed out using outlet tube 1
Outside.
In conclusion it is restricted embodiment of the invention, all those skilled in the art that above embodiment, which is not,
On the basis of substantive content of the invention, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this
The protection scope of invention.
Claims (10)
1. a kind of centrifugal urea dispenser pump, it is characterised in that: it includes centrifugal pump body, attachment device, power distribution cabinet, motor dress
It sets, wherein centrifugal pump body is mounted on electric machine by attachment device；Power distribution cabinet is provided on electric machine；Power distribution cabinet and electricity
It is electrically connected between machine device；
The centrifugal pump body includes impeller unit, outlet tube, inlet tube, pump case, drive shaft, partition, is wherein provided on pump case
Inlet tube and outlet tube；It is provided in pump case and pump case internal cavity is divided into admission chamber and the out partition of sap cavity；Impeller unit peace
In pump case；In the drive shaft insertion pump case connecting with electric machine, and drive shaft penetrates impeller in impeller unit and fills
Set rotary motion；
It is provided with external screw thread at two on the drive shaft periphery, and this be arranged at two on external screw thread and impeller unit two is right
The nut formation in the impeller of distribution is claimed to be threadedly engaged, so that when impeller unit is by solution responsive to axial force axial float
When, it will pull the nut in impeller to move axially relative to drive shaft, the nut in impeller will be with the outer spiral shell in drive shaft
Screw-driven occurs for line, so that the nut in impeller rotates by a certain angle, the nut in impeller will be with the nut of fastening impeller
Collective effect changes the flow for entering solution in impeller unit, achievees the purpose that weaken the axial force that impeller unit is subject to；Impeller
The impeller of two symmetrical impellers being arranged on device, side accelerates the solution come in by inlet tube, the leaf of the side
Solution after wheel accelerates flows out pump case by outlet tube after being accelerated in the impeller that pipeline flows into the other side；Outlet tube stream
Small part solution out will cool down to the rotor at electric machine by cooling duct, after through return flow line enter inlet tube
Participate in pressurization cycle again afterwards.
2. a kind of centrifugal urea dispenser pump according to claim 1, it is characterised in that: the electric machine includes second
Fixed ring, stator winding, p-m rotor, lock nut, rear end cap, machine barrel, wherein stator winding passes through multiple second fixed rings
It is mounted in machine barrel；P-m rotor is nested on the outside of drive shaft, and p-m rotor is located in stator winding；Lock nut will drive
Axis is fixed together with p-m rotor；Rear end cap is mounted on machine barrel end face by bolt；P-m rotor and stator winding and match
It is electrically connected between electric cabinet.
3. a kind of centrifugal urea dispenser pump according to claim 1, it is characterised in that: the attachment device includes connection
Flange, connection boss, support rim, wherein connecting flange one end is provided with connection boss and support rim；Connecting flange is not set
It is equipped with connection boss and support rim one end is mounted on machine barrel by bolt；Support rim is used to support drive shaft, and supports
It is coupled between boss and drive shaft by stationary ring ceramics and rotating ring ceramics.
4. a kind of centrifugal urea dispenser pump according to claim 1, it is characterised in that: be additionally provided with branch on the pump case
The first shaft hole of drive shaft is supportted, and is coupled between first shaft hole and drive shaft by axle sleeve；The end face of pump case one end is fixed
It is mounted on connection raised head face.
5. a kind of centrifugal urea dispenser pump according to claim 1, it is characterised in that: the impeller unit includes first
Impeller, solution line, the first fixed ring, fixed plate, the first arc shell, the second arc shell, the first fluid hole, connects the second impeller
Connect ring, the second fluid hole, accommodating chamber, cover board, spring mounting ring, buffer spring, the second sealing device, inlet opening, the second axis hole,
The shaft shoulder, movement set, limited ring groove, guide groove, stop collar, guide block, the first nut, the second nut, T shape ring, first sealing device, T
Shape annular groove, wherein being provided with the protrusion of toroidal at the end face center of first arc shell one end；On first arc shell extrados
It is provided with multiple second fluid holes；The protrusion of toroidal is provided at the end face center of second arc shell one end；Second arc shell
Multiple first fluid holes are provided on extrados；First arc shell is identical with the second arc shell shape size；First arc shell
It is fixed together between the second arc shell by connection ring, and the toroidal on the first arc shell and the second arc shell
Protrusion far from connection ring be distributed；Accommodating chamber is provided on connection ring inner headed face；First arc shell has the protrusion of toroidal
One end is fixedly mounted on partition end face；It is fixed that there is second arc shell raised one end of toroidal to be fixedly installed with first
Ring, and be symmetrically installed on the first fixed ring periphery there are two fixed plate；The fixed peace in the one end of fixed plate far from the first fixed ring
On the internal cavity wall surface of pump case；The second axis hole of perforation is provided at cover board end face center；Cover board passes through first sealing device
It is coupled with drive shaft, and cover board one end is fixedly mounted on the end face of the second arc shell；Be provided on cover board end face with it is multiple
The corresponding inlet opening of second fluid hole, and communicated between inlet opening and the second fluid hole by solution line connection；Drive shaft
Periphery on be symmetrically installed there are two guide block；Guide groove there are two symmetrically being opened on movement set inner headed face；At movement set guide groove position
Periphery on restraining position ring block is set；Limited ring groove is provided on spring mounting ring inner headed face；Spring mounting ring by stop collar with
Being rotatably assorted for limited ring groove is mounted on movement set outside；Movement set periphery on about spring mounting ring be symmetrical arranged there are two
The shaft shoulder to play the role of positioning to the first impeller and the second impeller；Movement set is being driven by guide groove and being slidably installed for guide block
On axis, and spring mounting ring is located in accommodating chamber；The inner headed face of accommodating chamber two sides in connection ring passes through the second sealing device
It is coupled with movement set periphery；The two sides of spring mounting ring are symmetrically distributed with multiple groups buffer spring, and buffer spring one end is solid
On spring mounting ring end face, the buffer spring other end, which is fixedly mounted on, to be accommodated on resonator end surface for Dingan County；First impeller and second
Impeller is symmetrically mounted on movement and puts on, and the first impeller is located in the first arc shell, and the second impeller is located in the second arc shell；The
One impeller covers the upper shaft shoulder with the second impeller and movement and is engaged；
First impeller is symmetrical about spring mounting ring with the second impeller place mounting structure, for being pacified at the first impeller
Assembling structure, the second nut with upper externally threaded be threadedly engaged of movement set by being fastened on movement for the first impeller and putting on；Second
T shape annular groove is provided on nut end face；T shape ring is installed in T shape annular groove；First nut one end is fixedly mounted on T shape ring end face,
And first nut in drive shaft external screw thread formation be threadedly engaged.
6. a kind of centrifugal urea dispenser pump according to claim 5, it is characterised in that: first impeller and the second leaf
Structure is identical in taking turns, and the first impeller and structure installation site in the second impeller are symmetrical about spring mounting ring, right
In the first impeller, it includes the first fast pulley, the second fast pulley, blade, boss, wherein being provided on the second fast pulley for quilt
The boss that second nut compresses；Second fast pulley is equipped with multiple blades with circumferentially uniform on one end end face of boss；The
With the protrusion of toroidal at the end face center of one fast pulley one end；First fast pulley does not have the end face of the protrusion of toroidal
It is fixedly mounted in multiple vane end faces, and there is the circular hole of perforation at the first fast pulley end face center.
7. according to claim 5 or a kind of centrifugal urea dispenser pump as claimed in claim 6, it is characterised in that: described second
Fast pulley is engaged with the shaft shoulder；Second nut is pressed on boss by being threadedly engaged with the upper external screw thread formation of movement set.
8. according to claim 5 or a kind of centrifugal urea dispenser pump as claimed in claim 6, it is characterised in that: described first
In the end face of protrusion and first arc shell one end at the end face center of first fast pulley one end in impeller with toroidal
The male cooperation of toroidal is provided at the heart；There is horn mouth at the end face center of first fast pulley one end in the second impeller
The male cooperation of toroidal is provided at the protrusion of shape and the end face center of second arc shell one end.
9. according to claim 1 or a kind of centrifugal urea dispenser pump described in claim 5, it is characterised in that: the driving
Two set external screw threads are two with respect to the setting position of the first impeller and two the first nuts in the second impeller on axis
First nut is located between two external screw threads in drive shaft.
10. according to claim 1 or a kind of centrifugal urea dispenser pump described in claim 5, it is characterised in that: the driving
Two set external screw threads are two with respect to the setting position of the first impeller and two the first nuts in the second impeller on axis
First nut is located on the outside of two external screw threads in drive shaft.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242542.4A CN109268307B (en) | 2018-10-24 | 2018-10-24 | A kind of centrifugal urea dispenser pump |
| CN201910338534.8A CN109973401B (en) | 2018-10-24 | 2018-10-24 | Urea pump based on centrifugal type |
| CN201910338537.1A CN110094339B (en) | 2018-10-24 | 2018-10-24 | Centrifugal urea pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242542.4A CN109268307B (en) | 2018-10-24 | 2018-10-24 | A kind of centrifugal urea dispenser pump |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910338534.8A Division CN109973401B (en) | 2018-10-24 | 2018-10-24 | Urea pump based on centrifugal type |
| CN201910338537.1A Division CN110094339B (en) | 2018-10-24 | 2018-10-24 | Centrifugal urea pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109268307A CN109268307A (en) | 2019-01-25 |
| CN109268307B true CN109268307B (en) | 2019-05-21 |
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ID=65193316
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910338537.1A Active CN110094339B (en) | 2018-10-24 | 2018-10-24 | Centrifugal urea pump |
| CN201811242542.4A Active CN109268307B (en) | 2018-10-24 | 2018-10-24 | A kind of centrifugal urea dispenser pump |
| CN201910338534.8A Active CN109973401B (en) | 2018-10-24 | 2018-10-24 | Urea pump based on centrifugal type |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910338537.1A Active CN110094339B (en) | 2018-10-24 | 2018-10-24 | Centrifugal urea pump |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910338534.8A Active CN109973401B (en) | 2018-10-24 | 2018-10-24 | Urea pump based on centrifugal type |
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| CN (3) | CN110094339B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131174B (en) * | 2019-06-24 | 2024-09-20 | 郑州飞龙汽车部件有限公司 | Centrifugal pump for engine cooling system |
| CN112128115A (en) * | 2020-09-27 | 2020-12-25 | 安徽埃斯克制泵有限公司 | Corrosion-resistant chemical pump with good sealing performance |
| CN114542474B (en) * | 2022-04-25 | 2022-07-01 | 烟台鲁吉汽车科技有限公司 | Centrifugal urea pump |
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- 2018-10-24 CN CN201910338537.1A patent/CN110094339B/en active Active
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- 2018-10-24 CN CN201910338534.8A patent/CN109973401B/en active Active
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| US9162019B2 (en) * | 2006-04-26 | 2015-10-20 | The Cleveland Clinic Foundation | Two-stage rotodynamic blood pump |
| CN102272457A (en) * | 2009-01-09 | 2011-12-07 | 斯奈克玛 | Pump having an axial balancing device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109973401B (en) | 2020-06-26 |
| CN110094339B (en) | 2020-06-26 |
| CN109268307A (en) | 2019-01-25 |
| CN110094339A (en) | 2019-08-06 |
| CN109973401A (en) | 2019-07-05 |
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