CN203655556U - Volume centrifugal pump - Google Patents
Volume centrifugal pump Download PDFInfo
- Publication number
- CN203655556U CN203655556U CN201320786544.6U CN201320786544U CN203655556U CN 203655556 U CN203655556 U CN 203655556U CN 201320786544 U CN201320786544 U CN 201320786544U CN 203655556 U CN203655556 U CN 203655556U
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- CN
- China
- Prior art keywords
- screw rod
- impeller
- pump
- end cap
- centrifugal pump
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- 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 - Lifetime
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- 238000007789 sealing Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 235000019602 lubricity Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a volume centrifugal pump. The volume centrifugal pump comprises a pump body, a drive screw and a driven screw, wherein the drive screw and the driven screw are located in the pump body in a matched mode, the input end of the drive screw extends out of the pump body, the outwards-extending input end of the drive screw is a polished rod and is provided with an impeller through a key, the impeller is provided with an impeller cover, one axial end of the impeller cover and one axial end of the pump body are connected, the other axial end of the pump body is provided with an input cavity, an outlet cavity is formed in one radial side of the impeller cover, the outer port of the outlet cavity is provided with an outlet flange, the other axial end of the impeller cover is connected with a large end cover through a locating flange, and the input end of the drive screw extends out of the large end cover. The volume centrifugal pump is designed by integrating the different characteristics of a screw pump and a centrifugal pump according to the basic principles of the screw pump and the centrifugal pump. According to the volume centrifugal pump, the self-suction performance is high, the lift is high and is 280 m, and flow does not change along with changes of the lift and is stable.
Description
Technical field
The utility model belongs to pump technical field, is specifically related to a kind of constant flow, and lift is high, and physical dimension is little, is applicable to the transfer pump of the medium transport of range of viscosities large (1-2000cSt).
Technical background
Centrifugal pump is widely used in low viscosity medium transport.Existing centrifugal pump is deposited problem in the following areas: 1. can not realize completely self-absorption function, need to guarantee could realize lower self-absorption function after inlet tube fills medium by additional device or labyrinth, suction head be low, poor reliability.2. instability of flow, changes with the variation of lift; Lift is also lower, is generally less than 120m.3. be not suitable for transfer of highly viscous medium, in the time that dielectric viscosity is greater than 20cSt, the flow of centrifugal pump, lift, efficiency all will significantly reduce conventionally, be unfavorable for saving energy and reduce the cost.4. operating mode inapplicable and low-flow high-lift is used.Existing screw pump is compared with centrifugal pump, and in the situation of equal flow, the axial length of screw pump is longer than centrifugal pump, and volume is greater than centrifugal pump; And pressure is higher, its axial length is longer; Carry low viscosity medium efficiency low.
Model utility content
For realize stability of flow, lift high, there is strong suction capacity, the medium transport that is applicable to range of viscosities large (1-2000cSt) that efficiency is high, the utility model provides a kind of volume centrifugal pump.
Concrete technical solution is as follows:
A kind of volume centrifugal pump comprises the pump housing, active screw rod and driven screw rod, and initiatively screw rod and the cooperation of driven screw rod are positioned at the pump housing; Initiatively the input section of screw rod extends outside the pump housing; Improvement is: initiatively the overhanging input section of screw rod is polished rod, and input section is upper is provided with impeller by key, and described impeller is provided with impeller chimney, and axial one end of described impeller chimney and axial one end of the pump housing are connected, and the axial the other end of the pump housing is input cavity; A radially side of impeller chimney offers outlet plenum, and the external port of outlet plenum is outlet(discharge) flange; The axial the other end of impeller chimney is connecting large end cap by the locating flange of Flange-shaped Parts; Initiatively the input end of screw rod extends outside large end cap.
The outer middle side part of large end cap is end cap sleeve pipe, and the outer end cooperation of described end cap sleeve pipe is provided with small end cover, and the input section of the active screw rod in end cap sleeve pipe is provided with bearing; In the input section of the active screw rod between described bearing and small end cover, coordinate and be provided with locking nut and mechanical sealing assembly, initiatively the input end of screw rod extends outside small end cover.
Between the end cap sleeve pipe of the input cavity of the described pump housing and large end cap, be communicated with by balance tube.
Useful technique effect of the present utility model embodies in the following areas:
1. the utility model, according to the basic principle of screw pump and centrifugal pump, is integrated both different qualities, and with screw pump, in the work of leading portion suction side, screw rod end sucks, and centrifugal pump is at back segment (in the output terminal of screw rod), and impeller end is exported.Make this pump there is very strong self-priming performance, and lift high (lift size is directly proportional to outlet load, limited by power of motor and pump intensity, and design load is 280m), flow does not change with lift, keeps stable;
2. the screw rod of suction side can be that three screw rods are paid, and can be also that two screw rods is paid and the make paper moulds special molded line rotor of formula of five screw rods;
3. driving shaft structure, leading portion suction side is the spiral section part of active screw rod, and back segment is as impeller stationary axle part, and impeller is arranged on active screw rod, makes the number of spare parts of pump few, and Transmitted chains shortens;
4. the pump housing is the Combination Design of inlet passage, Connectino flange for pipeline and screw rod wrap, and its cross section is irregularly-shaped hole;
Impeller chimney and the pump housing align by the locating flange of Flange-shaped Parts after by Bolt Connection, accuracy of alignment is high, compact structure;
6. according to the difference of working condition requirement, bearing can be arranged on the nearly side medium of mechanical seal, also can be arranged on the atmospheric side of mechanical seal, to adapt to the medium transport of different lubricities.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the A-A face sectional view of Fig. 1.
Fig. 3 is the partial sectional view of left view in Fig. 1.
Fig. 4 is the scheme of installation of active screw rod and impeller.
Sequence number in upper figure: initiatively screw rod 1, small end cover 2, mechanical sealing assembly 3, locking nut 4, bearing 5, large end cap 6, impeller chimney 7, impeller 8, the pump housing 9, driven screw rod 10, balance tube 11, flat key 12.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.
Referring to Fig. 1 and Fig. 2, a kind of volume centrifugal pump comprises the pump housing 9, active screw rod 1 and two driven screw rods 10, and initiatively screw rod 1 and 10 cooperations of driven screw rod are positioned at the pump housing 9.Initiatively the input section of screw rod 1 extends outside the pump housing 9, and initiatively the overhanging input section of screw rod 1 is polished rod, and input section is upper installs impeller 8 by flat key 12, sees Fig. 4.Impeller 8 is provided with impeller chimney 7, and axial one end of impeller chimney 7 and axial one end of the pump housing 9 are bolted, and the axial the other end of the pump housing 9 is input cavity.A radially side of impeller chimney 7 offers outlet plenum, and the external port of outlet plenum is outlet(discharge) flange, sees Fig. 3; The axial the other end of impeller chimney 7 is connecting large end cap 6 by the locating flange of Flange-shaped Parts.The outer middle side part of large end cap 6 is end cap sleeve pipe, and the outer end cooperation of end cap sleeve pipe is provided with small end cover 2, in the input section of the active screw rod 1 in end cap sleeve pipe, bearing 5 is installed; In the input section of the active screw rod 1 between bearing 5 and small end cover 2, coordinate locking nut 4 and mechanical sealing assembly 3 are installed, initiatively the input end of screw rod 1 extends the outside of small end cover 2.Between the end cap sleeve pipe of the input cavity of the pump housing 9 and large end cap 6, be communicated with by balance tube 11, with the suffered axial force of balancing volume centrifugal pump, initiatively the axial force of a small amount of remnants on screw rod 1 is by bearing 5 balances.
In the time of pump work, initiatively screw rod 1 impeller 8, and promote two driven screw rods 10 and rotate, and between intermeshing spiral surface and the pump housing 9, form an airtight chamber that volume is constant on two driven screw rods 10, now be transferred after medium enters the pump housing 9 and evenly enter continuously impeller chimney 7 along screw axial, be pushed into the center of impeller 8, in the centrifugal motion that impeller 8 High Rotation Speeds produce, further obtain energy, the continuous outlet(discharge) flange from impeller chimney 7 of medium is discharged, thereby reach the function of fed sheet of a media.
Claims (3)
1. a volume centrifugal pump, comprises the pump housing, active screw rod and driven screw rod, and initiatively screw rod and the cooperation of driven screw rod are positioned at the pump housing; Initiatively the input section of screw rod extends outside the pump housing, it is characterized in that: initiatively the overhanging input section of screw rod is polished rod, input section is upper is provided with impeller by key, and described impeller is provided with impeller chimney, axial one end of described impeller chimney and axial one end of the pump housing are connected, and the axial the other end of the pump housing is input cavity; A radially side of impeller chimney offers outlet plenum, and the external port of outlet plenum is outlet(discharge) flange; The axial the other end of impeller chimney is connecting large end cap by the locating flange of Flange-shaped Parts; Initiatively the input end of screw rod extends outside large end cap.
2. a kind of volume centrifugal pump according to claim 1, is characterized in that: the outer middle side part of large end cap is end cap sleeve pipe, and the outer end cooperation of described end cap sleeve pipe is provided with small end cover, and the input section of the active screw rod in end cap sleeve pipe is provided with bearing; In the input section of the active screw rod between described bearing and small end cover, coordinate and be provided with locking nut and mechanical sealing assembly, initiatively the input end of screw rod extends outside small end cover.
3. a kind of volume centrifugal pump according to claim 1 and 2, is characterized in that: between the input cavity of the described pump housing and the end cap sleeve pipe of large end cap, be communicated with by balance tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320786544.6U CN203655556U (en) | 2013-12-04 | 2013-12-04 | Volume centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320786544.6U CN203655556U (en) | 2013-12-04 | 2013-12-04 | Volume centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655556U true CN203655556U (en) | 2014-06-18 |
Family
ID=50921950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320786544.6U Expired - Lifetime CN203655556U (en) | 2013-12-04 | 2013-12-04 | Volume centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655556U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671007A (en) * | 2013-12-04 | 2014-03-26 | 黄山工业泵制造有限公司 | Displacement centrifugal pump |
| CN104806468A (en) * | 2015-04-15 | 2015-07-29 | 北京航科发动机控制***科技有限公司 | Coaxial integral high-and-low-pressure pump and processing method thereof |
| CN116576082A (en) * | 2023-07-14 | 2023-08-11 | 威晟汽车科技(宁波)有限公司 | Pump device |
-
2013
- 2013-12-04 CN CN201320786544.6U patent/CN203655556U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671007A (en) * | 2013-12-04 | 2014-03-26 | 黄山工业泵制造有限公司 | Displacement centrifugal pump |
| CN104806468A (en) * | 2015-04-15 | 2015-07-29 | 北京航科发动机控制***科技有限公司 | Coaxial integral high-and-low-pressure pump and processing method thereof |
| CN116576082A (en) * | 2023-07-14 | 2023-08-11 | 威晟汽车科技(宁波)有限公司 | Pump device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |
|
| CX01 | Expiry of patent term |