CN208364401U - Axial force self-balancing vertical centrifugal pump - Google Patents
Axial force self-balancing vertical centrifugal pump Download PDFInfo
- Publication number
- CN208364401U CN208364401U CN201821111924.9U CN201821111924U CN208364401U CN 208364401 U CN208364401 U CN 208364401U CN 201821111924 U CN201821111924 U CN 201821111924U CN 208364401 U CN208364401 U CN 208364401U
- Authority
- CN
- China
- Prior art keywords
- impeller
- pump
- water inlet
- shaft
- pump case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000012530 fluid Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a kind of axial force self-balancing vertical centrifugal pumps, and including pump case and vertical pump shaft, the upper end of pump shaft connects motor, and lower end is protruded into pump case and connect with the impeller in pump case and rotated with impeller, and water outlet is offered on pump case；The water inlet end of the impeller is upward；It further include water inlet, water inlet and impeller vertically have difference in height, and water inlet is located on impeller；The shaft part of pump shaft below impeller is connect with pump case by bearing to improve stability.The utility model keeps fluid energy of flow loss in pump small, and the bearing for remaining pump shaft and pump case connects, and pump shaft rotation is more stable；Impeller water inlet end is upward, when work, fluid is sucked from water inlet, it is thrown away after suction passage flows to the top of impeller shaft core position and is further sucked by impeller, because the reaction force of fluid can make impeller pass to the upward axial force of pump shaft, the self weight of balance rotor-support-foundation system is offset, axial load is small, correspondence reduces failure rate, improves the service life.
Description
Technical field
The utility model belongs to the technical field of non-varactor pump in fluid varactor machine, and in particular to a kind of axial force
Self-balancing vertical centrifugal pump.
Background technique
Centrifugal pump is the pump for carrying out trandfer fluid by the centrifugal force generated when impeller rotation, and fluid is inhaled into from water inlet, from
Water outlet is pumped out.When work, pump shaft drives the impeller high speed rotation in pump case, the fluid in pump case under the action of the centrifugal force by
It gets rid of the scroll casing type runner to impeller outer edge, through pump case to flow into pressure pipe road and pump out, at impeller center, then due to fluid is thrown out of
Negative pressuren zone is formed, external fluid is inhaled into from water inlet under pressure, and the negative of impeller axle center is constantly flowed to through suction passage
Pressure area, impeller meet be to one end of suction passage impeller water inlet end, impeller do not stall it is dynamic so that effect of the fluid in impeller
It is constantly inhaled into and pumps out down, achieve the purpose that trandfer fluid.Impeller is installed on pump shaft, the flowing side being inhaled into according to fluid
To and fluid reaction force, it is known that, because the reaction force of fluid can make impeller be intake the power of extreme direction by towards impeller,
I.e. pump shaft needs to bear impeller work bring axial force, logical in the horizontal pump shaft of routine, the pump configuration of axial subdivision pump case
The axial force that pump shaft is subject to often is balanced by way of double suction runner, reduces vibration, extends the service life.
The principle of vertical centrifugal pump (contain vertical submerged pump) is identical as above-mentioned principle, as shown in Fig. 1, only its pump shaft 1
It is in vertical direction comprising pump case 2, pump case 2 are made of the pump housing 21 and pump cover 22, and the pump housing 21 offers water outlet 7, pump shaft
1 upper end connects motor, and lower end passes through pump case 22 and protrudes into the pump housing 21 and connect with the impeller 3 in the pump housing 21 with impeller 3
Rotation, motor can be connected to 2 top of pump case by electric machine support 4；Patent CN107725394A, CN107701455A is also this
Sample；Motor can also be connected directly between 2 top of pump case, such as CN206035840U；Wherein, CN107701455A is under vertical solution
Pump, since entire pump case need to be placed in underwater operation, the water outlet of pump case is connected to upward outlet pipe.Current vertical centrifugal
Pump, water inlet 6 are opened in 2 bottom of pump case, and also some is opened in the side of pump case 2, but the water inlet end 31 of its impeller 3 is under
The lower section that side, i.e. water inlet 6 are connected to 3 shaft core position of impeller by suction passage；To increase stability when pump shaft 1 rotates,
Connection bearing is usually equipped with also at the position that pump shaft 1 protrudes into pump case 2.As it can be seen that because the reaction force of fluid can be such that impeller 3 transmits
Motor, bearing etc. are connected along with the self weight of (i.e. rotor-support-foundation systems) such as impeller 3, pump shafts 1 to the axial force that pump shaft 1 is downward
Position bears that downward axial force is bigger, this all affects the service life of existing structure vertical centrifugal pump, or even goes out when in use
The failure that existing motor, bearing are burnt out, is further improved.
Summary of the invention
For the above-mentioned deficiency of the prior art, it is certainly flat that the technical problem to be solved by the present invention is to provide a kind of axial forces
The problem of weigh vertical centrifugal pump, and downward axial load is excessive when avoiding vertical centrifugal pump work, influences service life obtains vertical
When formula is centrifuged pump work, impeller generates upward axial force to offset to keep axial load certainly flat with rotor-support-foundation system self weight
Weighing apparatus, axial load reduce, and reduce rate of breakdown, improve the effect of service life of equipment.
In order to solve the above technical problems, the utility model adopts the following technical solution:
Axial force self-balancing vertical centrifugal pump, including pump case and vertical pump shaft, the upper end of the pump shaft connects motor,
The lower end of the pump shaft is protruded into the pump case and is connect with the impeller in pump case and rotated with impeller, and the pump case offers
Water outlet；The water inlet end of the impeller is upward.
Upward, that is, the water inlet that any position pumped opens up passes through suction to the impeller water inlet end of the utility model vertical centrifugal pump
Air stream enter runner is connected to the top of impeller shaft core position, in this way, when work, because the reaction force of fluid can make impeller pass to pump shaft
Upward axial force achievees the effect that offset the self weight of balance rotor-support-foundation system, reduces load axially downwards, this is also that this is practical new
Type is named as the reason of axial force self-balancing vertical centrifugal pump；Load in axial direction reduces, and correspondence just reduces rate of breakdown,
It avoids and the accident that the connecting portions such as motor, bearing are burnt out occurs, improve the service life of equipment.
Above-mentioned technical proposal is further improved, further includes water inlet, the water inlet and impeller vertically have height
Difference, water inlet are located on impeller.
In this way, the fluid through water inlet, suction passage flows to the water inlet end of impeller under the action of negative pressure and fluid are self-possessed,
Fluid is reduced because of energy loss caused by velocity jump.
Further, the shaft part of the pump shaft below impeller is connect by bearing with the pump case to improve stability.
In this way, the bearing for still retaining pump shaft and pump case connects, guarantee stability when work.
Compared with prior art, the utility model has the following beneficial effects:
1, when the utility model vertical centrifugal pump work, axial load is small, and correspondence reduces rate of breakdown, improves and sets
Standby service life.
2, the structure of the utility model effectively reduces in fluid suction process because of energy loss caused by velocity jump.
3, the utility model remains pump shaft and the bearing of pump case connects, and stability when work is effectively ensured.
Detailed description of the invention
The schematic diagram of the existing vertical centrifugal pump of Fig. 1-；
The structural schematic diagram of one axial force self-balancing vertical centrifugal pump of Fig. 2-embodiment；
The structural schematic diagram of two axial force self-balancing vertical centrifugal pump of Fig. 3-embodiment；
The structural schematic diagram (partial enlargement) of three axial force self-balancing vertical centrifugal pump of Fig. 4-embodiment；
Wherein, pump shaft 1, pump case 2, the pump housing 21, pump cover 22, impeller 3, water inlet end 31, electric machine support 4 connect bearing 5, enter
The mouth of a river 6, water outlet 7, outlet pipe 71, pedestal 8, impeller nut 9, axle sleeve 10.
Specific embodiment
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Embodiment one
Referring to fig. 2, the axial force self-balancing vertical centrifugal pump of the utility model embodiment one, including pump case 2 and vertically
Pump shaft 1, the upper end of the pump shaft 1 connect motor (not shown), lower end protrude into pump case 2 and with the impeller 3 in pump case 2
With the rotation of impeller 3, the pump case 2 includes the pump housing 21 and pump cover 22 for connection, is connected with electric machine support 4 on pump cover 22 to be used for
Motor is placed, pump shaft 1, which passes through, is equipped with connection bearing 5 to increase stability when pump shaft 1 rotates, in electricity at the position of pump cover 22
Also have in machine support 4 and has installed interconnecting piece at two and connect by bearing with pump shaft 1；The side of pump cover 22 is equipped with water inlet 6, institute
Stating water inlet 6 and impeller 3 vertically has difference in height, and water inlet 6 is located on impeller 3,31 court of water inlet end of the impeller 3
On, i.e. the top that 3 shaft core position of impeller is connected to by the suction passage space formed in pump cover 22 of water inlet 6, in this way, through entering
The mouth of a river 6, suction passage fluid the water inlet end 31 of impeller 3 is flowed under the action of negative pressure and fluid are self-possessed, can reduce fluid because
Energy loss caused by velocity jump；Water outlet 7 is located on the pump housing 21, the lower end closed of the pump housing 21, the lower section connection of the pump housing 21
There is pedestal 8.In the present embodiment, the impeller 3 is mounted on the tail end of pump shaft 1, and the upper end of impeller 3 is connected to the shaft shoulder of pump shaft 1, under
End is compressed upwards by the impeller nut 9 being threadedly coupled with pump shaft 1.
When work, because impeller 3 water inlet end 31 upward, it is upward that the reaction force of fluid can make impeller 3 pass to pump shaft 1
Axial force achievees the effect that offset the self weight of balance rotor-support-foundation system, reduces load axially downwards；Load in axial direction reduces, right
Rate of breakdown should be just reduced, avoids and the accident that the connecting portions such as motor, bearing are burnt out occurs, improve making for equipment
Use the service life.
Embodiment two
Referring to Fig. 3, embodiment two and one axial force self-balancing vertical centrifugal pump of embodiment the difference is that, embodiment
The two axial force self-balancing vertical centrifugal pumps enumerated are submerged pump, and when use, entire pump case 2 need to be placed in underwater operation, water outlet
7 are connected to upward outlet pipe 71, and electric machine support 4 is tubular construction, and pump cover 22 is hollow ring structure, electric machine support
4 inner cavity is connected to the hollow part of pump cover 22, and the water inlet 6 is provided on the side wall of electric machine support 4, and water inlet 6 is same
Positioned at being located on impeller 3, in this way, the manufacture of pump cover 22 is simpler；Other same effects repeat no more；Submerged pump is generally also not
Pedestal is set.
Embodiment three
Referring to fig. 4, embodiment third is that further optimize structure, the lower end of the pump housing 21 is still on the basis of example 2
Be it is closed, the tail end of pump shaft 1 continues to extend downwardly and is cased with axle sleeve 10, the upper end of axle sleeve 10 and impeller 3 on the shaft part that extends
Lower end abut against, the lower end of axle sleeve 10 passes through the impeller nut 9 being threadedly coupled with pump shaft 1 and compresses upwards；The outside of axle sleeve 10
It is connect by connection bearing 5 with the pump housing 21.In this way, although the middle part of pump cover 22 has been in order to which fluid is by being designed to hollow structure,
Do not connected by bearing between pump cover 22 and pump shaft 1, still, the shaft part of the pump shaft 1 of the lower section of impeller 3 yet by connection bearing 5 with
The pump housing 21 of pump case 2 maintains connection, equally can guarantee the rotational stability of pump shaft 1, since the connection bearing 5 is located at pump shaft 1
End, the rotational stability of pump shaft 1 is more preferable.
When implementation, impeller 3 can be made to pass to the upward axial force and rotor of pump shaft 1 by matching reasonable revolving speed
System is dead-weight balanced；Impeller 3 pass to pump shaft 1 upward axial force it is excessive when, can choose and change the size of water inlet 6 and adjust
Amount of restriction with dead-weight balanced with rotor-support-foundation system, it is also an option that add increasing back sealing ring and by change increasing back sealing ring position size and
Balance hole is dead-weight balanced to ensure upward axial force and rotor-support-foundation system.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (3)
1. axial force self-balancing vertical centrifugal pump, including pump case (2) and vertical pump shaft (1), the upper end of the pump shaft (1) is connected
Motor, the lower end of the pump shaft (1) are protruded into the pump case (2) and are connect with the impeller (3) in pump case (2) with impeller
(3) it rotates, the pump case (2) offers water outlet (7)；It is characterized by: the water inlet end (31) of the impeller (3) is upward.
2. axial force self-balancing vertical centrifugal pump according to claim 1, it is characterised in that: it further include water inlet (6), it is described
Water inlet (6) and impeller (3) vertically have difference in height, and water inlet (6) is located on impeller (3).
3. axial force self-balancing vertical centrifugal pump according to claim 1, it is characterised in that: the pump shaft (1) below impeller (3)
Shaft part connect with the pump case (2) to improve stability by bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821111924.9U CN208364401U (en) | 2018-07-13 | 2018-07-13 | Axial force self-balancing vertical centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821111924.9U CN208364401U (en) | 2018-07-13 | 2018-07-13 | Axial force self-balancing vertical centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364401U true CN208364401U (en) | 2019-01-11 |
Family
ID=64925285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821111924.9U Expired - Fee Related CN208364401U (en) | 2018-07-13 | 2018-07-13 | Axial force self-balancing vertical centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208364401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591066A (en) * | 2018-07-13 | 2018-09-28 | 重庆水泵厂有限责任公司 | A kind of axial force self-balancing vertical centrifugal pump |
-
2018
- 2018-07-13 CN CN201821111924.9U patent/CN208364401U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591066A (en) * | 2018-07-13 | 2018-09-28 | 重庆水泵厂有限责任公司 | A kind of axial force self-balancing vertical centrifugal pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207813960U (en) | A kind of vertical multi-stage centrifugal pump | |
| CN109056990A (en) | Integration pump lock station and application | |
| CN208364401U (en) | Axial force self-balancing vertical centrifugal pump | |
| CN206988131U (en) | A kind of double-impeller centrifugal formula water pump | |
| CN201521454U (en) | Vertical self-priming pump | |
| CN110080991A (en) | A kind of vertical single stage Piping Centrifugal Pumps | |
| CN108591066A (en) | A kind of axial force self-balancing vertical centrifugal pump | |
| CN201347867Y (en) | Vertical centrifugal pump | |
| CN207813944U (en) | A kind of vertical multi-stage centrifugal pump | |
| CN106168221A (en) | A kind of duct type single-stage double-suction centrifugal pump | |
| CN111963450B (en) | Intelligent automatic cooling submersible pump | |
| CN216554421U (en) | High-strength vertical cantilever centrifugal pump | |
| CN201972929U (en) | Flow rate and lift variable type self-balancing axial force multistage centrifugal pump | |
| CN207989392U (en) | Vertical centrifugal pump | |
| CN103994097A (en) | Double-suction impeller and double-suction vortex pump | |
| CN107218227A (en) | A kind of double-impeller centrifugal formula water pump | |
| CN204386892U (en) | Vertical dynamic levitated pump | |
| CN210343739U (en) | Double-suction submersible pump | |
| CN208793257U (en) | A kind of gate pump | |
| CN209361471U (en) | A kind of novel Single Degree of Freedom Magnetic suspension centrifugal impeller | |
| CN208734563U (en) | Integration pump lock | |
| CN208057428U (en) | Easy-to-dismount centrifugal pump | |
| CN208416981U (en) | Vertical submerged pump with automatic liquid-drainage function | |
| CN207989332U (en) | Centrifugal pump | |
| CN205937136U (en) | Pipeline formula single -stage double suction centrifugal pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |