CN109469631A - A kind of centrifugal pump housing - Google Patents
A kind of centrifugal pump housing Download PDFInfo
- Publication number
- CN109469631A CN109469631A CN201811242511.9A CN201811242511A CN109469631A CN 109469631 A CN109469631 A CN 109469631A CN 201811242511 A CN201811242511 A CN 201811242511A CN 109469631 A CN109469631 A CN 109469631A
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- China
- Prior art keywords
- impeller
- nut
- face
- arc shell
- ring
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Classifications
-
- 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
- F04D13/12—Combinations of two or more pumps
- F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
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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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
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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
- F04D29/20—Mounting rotors on shafts
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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 centrifugal pump body technique field more particularly to a kind of centrifugal pump housings, it includes impeller unit, outlet tube etc., is wherein provided with inlet tube and outlet tube on pump case；The centrifugal pump housing 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, first impeller is opposite with the axial force size same direction that the second impeller is subject to, achieve the purpose that the axial force that the first impeller and the second impeller are subject to is offset.
Description
Technical field
The invention belongs to centrifugal pump body technique field more particularly to a kind of centrifugal pump housings.
Background technique
The axial action for being directed toward the suction inlet of pump always is generated on the impeller of current existing centrifugal pump, so that leaf
Wheel 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 will
The serious service life for reducing bearing generates extremely disadvantageous influence to the work of centrifugal pump, so designing a kind of centrifugal pump
Body is necessary.
The present invention design a kind of centrifugal pump housing 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 pump housings, to overcome on the impeller of the centrifugal pump housing in the prior art
Generate the axial action for being directed toward the suction inlet of pump always so that impeller will along axial direction to suction inlet side play, thus
It can cause the concussion and abrasion of impeller；The axial force there are problems that the serious service life for reducing bearing also simultaneously.
(2) technical solution of the present invention
To solve drawbacks described above in the prior art, the present invention discloses a kind of centrifugal pump housing, it is adopted the following technical solutions
Come what is realized.
A kind of centrifugal pump housing, it is characterised in that: it include impeller unit, outlet tube, inlet tube, pump case, drive shaft, every
Plate is wherein provided with inlet tube and outlet tube on pump case；It is provided in pump case and pump case internal cavity is divided into admission chamber and out liquid
The partition of chamber；Impeller unit is mounted in pump case；In the drive shaft insertion pump case connecting with driving equipment, and drive shaft penetrates leaf
Impeller device rotary motion in wheel apparatus.
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 is opposite to move axially with 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.
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.
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 first 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 centrifugal pump body technique, the centrifugal pump housing in the present invention has the first impeller and the second impeller, and
Be 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 second
The axial force that 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 and second
Impeller is when occurring play, it will so that the first nut installed thereon moves together, the first nut will in drive shaft
External screw thread formed screw-driven so that the first nut will change with respect to the installation site of the second nut, at this time
Liquid inventory at first impeller or the second impeller inlet will change so that the first impeller and the second impeller by
Axial force be changed so that the first impeller and the axial force size that the second impeller is subject to are identical but contrary, reach leaf
The purpose that the axial force that wheel apparatus is subject to can be offset.
Detailed description of the invention
Fig. 1 is global facility 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 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.
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 1, 2, 3, it includes impeller unit 40, outlet tube 1, inlet tube 2, pump case 3, drive shaft 4, partition 5, such as
Shown in Fig. 5, inlet tube 2 and outlet tube 1 wherein are provided on pump case 3；As shown in Figure 6,7, being provided in pump case 3 will be in pump case 3
Cavity 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；With driving equipment
The drive shaft 4 of connection is inserted into pump case 3, and drive shaft 4 penetrates 40 rotary motion of impeller device in impeller unit 40.
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 is opposite to move axially with 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.
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.
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；Such as Figure 12
It is shown, the protrusion of toroidal is provided at the end face center of 14 one end of the second arc shell；It is opened on second arc shell, 14 extrados
There are multiple first fluid holes 15；As shown in figure 13, the first arc shell 13 is identical with 14 shape size of the second arc shell；Such as figure
Shown in 12, it is fixed together between the first arc shell 13 and the second arc shell 14 by connection ring 16, and the first arc shell
13 and the protrusion of the second toroidal on arc shell 14 be distributed far from connection ring 16；As shown in figure 13,16 inner circle of connection ring
Accommodating chamber 18 is provided on face；There is first arc shell 13 raised one end of toroidal to be fixedly mounted on 5 end face of partition；Such as figure
8, shown in 9, there is the second arc shell 14 raised one end of toroidal to be fixedly installed with the first fixed ring 10, as shown in figure 9, and
Fixed plate 11 there are two being symmetrically installed on first fixed ring, 10 periphery；Fixed plate 11 is fixed far from one end of the first fixed ring 10
It is mounted on the internal cavity wall surface of pump case 3；As shown in figure 17, the second axis hole 24 of perforation is provided at 19 end face center of cover board；Lid
Plate 19 is coupled by first sealing device 38 with drive shaft 4, and 19 one end of cover board is fixedly mounted on the second arc shell 14
On end face；As shown in figure 17, inlet opening 23 corresponding with multiple second fluid holes 17, and inlet opening are provided on 19 end face of cover board
It is communicated between 23 and the second fluid hole 17 by the connection of solution line 9；It is symmetrical on the periphery of drive shaft 4 as shown in Figure 22,23
There are two guide blocks 30 for installation；As shown in figure 21, guide groove 28 there are two symmetrically being opened on 26 inner headed faces of movement set；As shown in figure 21, it transports
Restraining position ring block 29 is set on periphery at dynamic set 26 guide groove, 28 position；As shown in figure 20, it is opened on 20 inner headed face of spring mounting ring
Restraining position ring block slot 27；As shown in figure 19, spring mounting ring 20 is mounted on by stop collar 29 with being rotatably assorted for limited ring groove 27
26 outside of movement set；As shown in Figure 15,16, it is symmetrical arranged that there are two to the on 26 peripheries of movement set about spring mounting ring 20
The shaft shoulder 25 that one impeller 6 and the second impeller 7 play the role of positioning；As shown in figure 19, movement set 26 passes through guide groove 28 and guide block 30
It is slidably installed in drive shaft 4, and spring mounting ring 20 is located in accommodating chamber 18；18 two sides of accommodating chamber in connection ring 16
Inner headed face pass through the second sealing device 22 with movement set 26 peripheries be coupled；The two sides of spring mounting ring 20 are symmetrically divided
It is furnished with multiple groups buffer spring 21,21 one end of buffer spring is fixedly mounted on 20 end face of spring mounting ring, and buffer spring 21 is another
End is fixedly mounted on 18 end face of accommodating chamber；As shown in Figure 10, the first impeller 6 and the second impeller 7 are symmetrically mounted on movement set 26
On, and the first impeller 6 is located in the first arc shell 13, the second impeller 7 is located in the second arc shell 14；First impeller 6 and second
The shaft shoulder 25 on impeller 7 and movement set 26 is engaged.
As shown in figure 26, the first impeller 6 and 7 place mounting structure of the second impeller are symmetrical about spring mounting ring 20,
For institute's mounting structure at the first impeller 6, as shown in figure 19, the second nut 32 is by covering the externally threaded spiral shell on 26 with movement
First impeller 6 is fastened on movement set 26 by line cooperation；As shown in figure 33, T shape annular groove 39 is provided on 32 end face of the second nut；Such 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 ring 33
On end face, 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；As shown in figure 28, the second fast pulley 35 has circumferentially uniform on one end end face of boss 37
Multiple blades 36 are installed；As shown in figure 27, with the protrusion of toroidal at the end face center of 34 one end of the first fast pulley；The
One fast pulley 34 does not have the end face of the protrusion of toroidal to be fixedly mounted on multiple 36 end faces of blade, and 34 end of the first fast pulley
There is the circular hole of perforation at the center of face.
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 13 one end of the first 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 position in invention for two external screw threads of selection with respect to two the first nuts 31 in the first impeller 6 and the second impeller 7
Scheme 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；Adjust the first nut 31 at the first impeller 6
After the installation site of opposite second screw thread obtains adjusting, it will so that changing into the liquid inventory in the first impeller 6, such as
When fruit centrifugal pump works normally again, movement set 26 at this time will be delayed to the axial float displacement in 2 direction of inlet tube
Solution, illustrates 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
The axial resultant force that two impellers 7 are subject to reduces；Continue to select different screw threads to drive shaft 4 and the first nut 31, until when centrifugation
When pump work, the first impeller 6 and the second impeller 7 will not be in axial direction until plays, the first nut 31 and drive shaft 4 at this time
On screw thread be experiment optimum value, the centrifugal force on the impeller on centrifugal pump can be completely eliminated using the screw thread of the numerical value,
To reach protection centrifugal pump bearing, extend the purpose of centrifugal pump service life；If centrifugal pump works normally again, at this time
Movement set 26 will will increase to the axial float displacement in 2 direction of inlet tube, illustrate having adjusted first on the first impeller 6
When the installation site of nut 31 and the second nut 32, the axial direction that the first impeller 6 and the second impeller 7 are subject to increases with joint efforts, at this time
With regard to needing second of installation site, two the first nuts 31 are located on the outside of two external screw threads in drive shaft 4；Continue to pacify in first
Work when holding position, until when the centrifugal pump is operated, the first impeller 6 and the second impeller 7 will not in axial direction until play,
The first nut 31 at this time is experiment optimum value with the screw thread in drive shaft 4, can will be on centrifugal pump using the screw thread of the numerical value
Impeller 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；Driving at this time
Axis 4 will drive 26 movement of movement set by the cooperation of guide block 30 and guide groove 28, movement set 26 will key drive on the second impeller 7
The second fast pulley 35 make rotating motion, the second fast pulley 35 makes rotating motion will drive blade 36 mounted thereto, leaf
Piece 36 will accelerate into the solution between the first fast pulley 34 and the second fast pulley 35 on the second impeller 7, by acceleration
Solution enters in the second arc shell 14, then the first fluid hole 15 outflow opened from the second arc shell 14；Using outlet tube 1
It flows out outside pump case 3.
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 (8)
1. a kind of centrifugal pump housing, it is characterised in that: it include impeller unit, outlet tube, inlet tube, pump case, drive shaft, every
Plate is wherein provided with inlet tube and outlet tube on pump case；It is provided in pump case and pump case internal cavity is divided into admission chamber and out liquid
The partition of chamber；Impeller unit is mounted in pump case；In the drive shaft insertion pump case connecting with driving equipment, and drive shaft penetrates leaf
Impeller device rotary motion in wheel apparatus；
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 is opposite to move axially with 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.
2. a kind of centrifugal pump housing according to claim 1, it is characterised in that: be additionally provided with support driving on the pump case
The first shaft hole of axis, and be coupled between first shaft hole and drive shaft by axle sleeve.
3. a kind of centrifugal pump housing according to claim 1, it is characterised in that: the impeller unit include the first impeller,
Second impeller, solution line, the first fixed ring, fixed plate, the first arc shell, the second arc shell, the first fluid hole, connection ring,
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,
Move set, limited ring groove, guide groove, stop collar, guide block, the first nut, the second nut, T shape ring, first sealing device, T shape ring
Slot, wherein being provided with the protrusion of toroidal at the end face center of first arc shell one end；It is provided on first arc shell extrados
Multiple second fluid holes；The protrusion of toroidal is provided at the end face center of second arc shell one end；Second arc shell outer arc
Multiple first fluid holes are provided on face；First arc shell is identical with the second arc shell shape size；First arc shell and
It is fixed together between two arc shells by connection ring, and the first arc shell and the toroidal on the second arc shell is convex
It rises and is distributed far from connection ring；Accommodating chamber is provided on connection ring inner headed face；First arc shell has raised one end of toroidal
It is fixedly mounted on partition end face；There is second arc shell raised one end of toroidal to be fixedly installed with the first fixed ring, and
Fixed plate there are two being symmetrically installed on first fixed ring periphery；Fixed plate is fixedly mounted on pump far from one end of the first fixed ring
On the internal cavity wall surface of shell；The second axis hole of perforation is provided at cover board end face center；Cover board passes through first sealing device and driving
Axis is coupled, and cover board one end is fixedly mounted on the end face of the second arc shell；It is provided on cover board end face and goes out with multiple second
The corresponding inlet opening of fluid apertures, and communicated between inlet opening and the second fluid hole by solution line connection；The outer circle of drive shaft
Guide block there are two being symmetrically installed on face；Guide groove there are two symmetrically being opened on movement set inner headed face；Outer circle at movement set guide groove position
Restraining position ring block is set on face；Limited ring groove is provided on spring mounting ring inner headed face；Spring mounting ring passes through stop collar and stop collar
Being rotatably assorted for slot is mounted on movement set outside；It is symmetrical arranged about spring mounting ring there are two to first on movement set periphery
The shaft shoulder that impeller and the second impeller play the role of positioning；Movement set being slidably installed on the driving shaft by guide groove and guide block,
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 and movement
Set periphery is coupled；The two sides of spring mounting ring are symmetrically distributed with multiple groups buffer spring, and buffer spring one end is fixedly mounted
On spring mounting ring end face, the buffer spring other end, which is fixedly mounted on, to be accommodated on resonator end surface；First impeller and the second impeller pair
Title is 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；First impeller
The upper shaft shoulder is covered with the second impeller and movement to be 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.
4. a kind of centrifugal pump housing according to claim 3, it is characterised in that: knot in first impeller and the second impeller
Structure is identical, and the first impeller and structure installation site in the second impeller are symmetrical about spring mounting ring, for first
It includes the first fast pulley, the second fast pulley, blade, boss to impeller, wherein being provided on the second fast pulley for by the second spiral shell
The boss that mother compresses；Second fast pulley is equipped with multiple blades with circumferentially uniform on one end end face of boss；First is fixed
Take turns the protrusion at the end face center of one end with toroidal；First fast pulley does not have the fixed peace in the end face of the protrusion of toroidal
There is the circular hole of perforation in multiple vane end faces, and at the first fast pulley end face center.
5. a kind of centrifugal pump housing according to claim 3 or claim 4, it is characterised in that: second fast pulley
It 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.
6. a kind of centrifugal pump housing according to claim 3 or claim 4, it is characterised in that: in first impeller
First fast pulley one end end face center at toroidal protrusion and set at the end face center of first arc shell one end
It is equipped with the male cooperation of toroidal；It is convex with toroidal at the end face center of first fast pulley one end in the second impeller
The male cooperation for rising and being provided with toroidal at the end face center of first arc shell one end.
7. according to claim 1 or a kind of centrifugal pump housing as claimed in claim 3, it is characterised in that: institute in the drive shaft
Two external screw threads being arranged are two the first spiral shells with respect to the setting position of the first impeller and two the first nuts in the second impeller
Mother is located between two external screw threads in drive shaft.
8. according to claim 1 or a kind of centrifugal pump housing as claimed in claim 3, it is characterised in that: institute in the drive shaft
Two external screw threads being arranged are two the first spiral shells with respect to the setting position of the first impeller and two the first nuts in the second impeller
Mother is located on the outside of two external screw threads in drive shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242511.9A CN109469631B (en) | 2018-10-24 | 2018-10-24 | Centrifugal pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242511.9A CN109469631B (en) | 2018-10-24 | 2018-10-24 | Centrifugal pump body |
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| Publication Number | Publication Date |
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| CN109469631A true CN109469631A (en) | 2019-03-15 |
| CN109469631B CN109469631B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811242511.9A Active CN109469631B (en) | 2018-10-24 | 2018-10-24 | Centrifugal pump body |
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| CN (1) | CN109469631B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185629A (en) * | 2019-07-02 | 2019-08-30 | 浙江嘉宏工具制造有限公司 | Flexibility goes out liquid structure and liquid pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100020204A1 (en) * | 2021-07-28 | 2023-01-28 | Pedrollo Spa | CENTRIFUGAL PUMP WITH OPPOSED IMPELLERS |
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| CN207554353U (en) * | 2017-12-08 | 2018-06-29 | 江苏长江水泵有限公司 | Self-balanced multiple-stage centrifugal pump is opened in stable type level |
| CN108223242A (en) * | 2017-12-05 | 2018-06-29 | 中海石油气电集团有限责任公司 | A kind of axial force balance mechanism and computational methods of FLNG hydraulic turbines |
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| WO2007144054A1 (en) * | 2006-06-13 | 2007-12-21 | Wilo Ag | Rotary pump with start-up with fixed rotational direction |
| CN101868628A (en) * | 2007-10-18 | 2010-10-20 | 克里夫兰诊所基金会 | Two-stage rotodynamic blood pump |
| CN107559206A (en) * | 2017-10-13 | 2018-01-09 | 嘉利特荏原泵业有限公司 | First-stage double-absorption structure Double-casing symmetrical expression radial direction subdivision centrifugal multistage pump multiple centrifugal pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110185629A (en) * | 2019-07-02 | 2019-08-30 | 浙江嘉宏工具制造有限公司 | Flexibility goes out liquid structure and liquid pump |
| CN110185629B (en) * | 2019-07-02 | 2024-03-29 | 浙江嘉宏工具制造有限公司 | Flexible liquid outlet structure and liquid pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109469631B (en) | 2020-07-07 |
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