CN206175234U - Balanced high inlet pressure chemical centrifugal pump of axial force - Google Patents
Balanced high inlet pressure chemical centrifugal pump of axial force Download PDFInfo
- Publication number
- CN206175234U CN206175234U CN201621223863.6U CN201621223863U CN206175234U CN 206175234 U CN206175234 U CN 206175234U CN 201621223863 U CN201621223863 U CN 201621223863U CN 206175234 U CN206175234 U CN 206175234U
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- pump
- axial force
- pump cover
- impeller
- pressure chemical
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Abstract
The utility model relates to a balanced high inlet pressure chemical centrifugal pump of axial force, including the pump body, pump shaft, impeller and pump cover, pump body one end is the water inlet, is equipped with the delivery port on the pump body, and the pump cover that pump shaft bearing supported the cross -under encapsulation pump body other end stretches into pump body in -connection impeller, its characterized in that: the outer pipeline of a return water is drawn to the delivery port, and the return water outer tube is equipped with the overflow valve on the road, and the outer pipeline of return water feeds through to the high nip of pump cover between pump cover and the impeller through the pump cover. Its simple structure, compactness can ensure effectively that centrifugal pump shaft to the dynamic balance, controls convenient, stability.
Description
Technical field
This utility model is related to a kind of centrifugal pump, the high inlet pressure chemical centrifugal pump of specifically a kind of axial force balance.
Background technology
The balance that the design of centrifugal pump of single stage type axial force balance is all based under condition of high voltage, under the non-pressurized conditions of entrance or
When person's moulding pressure does not reach design pressure, the axial force of impeller is unbalanced.The centrifugal pump shaft of general low entry pressure
To dynamic balance mainly by balance choma+balance pipe design or back blade design or back impeller design etc., but so
Design to inlet high pressure under the conditions of, the design of axial force balance cannot meet, and even have counteractive.Axial force
Imbalance can directly affect bearing service life includes that bearing temperature rise is exceeded, and the service life and pump of pump bearing are had influence on then
Vibration, stability etc..
The content of the invention
For above-mentioned deficiency of the prior art, this utility model provides a kind of simple structure, compact, can effectively guarantee
Centrifugal pump axial force balance, controls convenient, the stable high inlet pressure chemical centrifugal pump of axial force balance.
The technical solution adopted in the utility model is：A kind of high inlet pressure chemical centrifugal pump of axial force balance, including pump
Body, pump shaft, impeller and pump cover, pump housing one end is water inlet, and the pump housing is provided with outlet, and pump shaft bearings are worn and connect the encapsulation pump housing
The pump cover of the other end stretches into connection impeller in the pump housing, it is characterised in that：The outlet draws the outer pipeline of a backwater, backwater outer tube
Road is provided with overflow valve, and the outer pipeline Jing pump covers of backwater are communicated to the pump cover higher-pressure region between pump cover and impeller.
Further, the impeller is provided with back blade towards pump cover side.
Further, the back blade is placed in the back blade intracavity of pump cover.
Further, the water inlet and outlet are equipped with pressure transducer.
Using above-mentioned technical proposal, have an advantageous effect in that：Draw branch's backwater outer tube road in the outlet of pump, install
Overflow valve, when water inlet pressure is normal, lift condition it is normal under, be normally off by adjusting overflow valve limit value, work as water inlet
Pressure exceedes setting value, and overflow valve is opened, and will be pumped out mouth of a river pressure and be incorporated into pump cover higher-pressure region by backwater external pipeline, formation
With high inlet pressure opposite effect power, pump entirety axial force balance is realized.Under water inlet lower pressure is entered, Impeller Design has
Back blade, pump cover is designed with notopodium piece chamber, and during pump operation, back blade forms certain low-pressure area with pump cover back impeller chamber, effectively
Reduce pump axial force under lower pressure.
Description of the drawings
Fig. 1 is this utility model structural representation.
In figure：The pump housing 1, water inlet 2, outlet 3, pump cover 4, impeller 5, pump shaft 6, pump cover higher-pressure region 7, the outer pipeline 8 of backwater,
Pipeline 81 in backwater, overflow valve 9.
Specific embodiment
It is described further below in conjunction with drawings and Examples.
Shown in Fig. 1：A kind of high inlet pressure chemical centrifugal pump of axial force balance include the pump housing 1, water inlet 2, outlet 3,
Pump cover 4, impeller 5, pump shaft 6, backwater outer pipeline 8, overflow valve 9.The one end of the pump housing 1 is water inlet 2, and the pump housing 1 is provided with outlet 3,
The bearings of pump shaft 6 are worn and connect the pump cover 4 of the encapsulation pump housing other end and stretch into connection impeller 5 in the pump housing, and outlet 3 is drawn outside a backwater
Pipeline 8, the outer pipeline 8 of backwater is provided with overflow valve 9, and pipeline 81 is communicated to pump cover and leaf in the backwater in the outer pipeline Jing pump covers of backwater
Pump cover higher-pressure region 7 between wheel.
On the basis of above-described embodiment, impeller can also be provided with back blade towards pump cover side.Simultaneously back blade may also be placed in
The back blade intracavity of pump cover.
On the basis of above-described embodiment, water inlet and outlet are additionally provided with pressure transducer.
Claims (4)
1. the high inlet pressure chemical centrifugal pump of a kind of axial force balance, including the pump housing, pump shaft, impeller and pump cover, pump housing one end is
Water inlet, the pump housing is provided with outlet, and pump shaft bearings are worn and connect the pump cover of the encapsulation pump housing other end and stretch into connection leaf in the pump housing
Wheel, it is characterised in that：The outlet draws the outer pipeline of a backwater, and the outer pipeline of backwater is provided with overflow valve, the outer pipeline Jing of backwater
Pump cover is communicated to the pump cover higher-pressure region between pump cover and impeller.
2. a kind of high inlet pressure chemical centrifugal pump of axial force balance according to claim 1, is characterized in that：The impeller
Back blade is provided with towards pump cover side.
3. a kind of high inlet pressure chemical centrifugal pump of axial force balance according to claim 2, is characterized in that：The notopodium
Piece is placed in the back blade intracavity of pump cover.
4. a kind of high inlet pressure chemical centrifugal pump of axial force balance according to claim 1, is characterized in that：The water inlet
Mouth and outlet are equipped with pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223863.6U CN206175234U (en) | 2016-11-15 | 2016-11-15 | Balanced high inlet pressure chemical centrifugal pump of axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223863.6U CN206175234U (en) | 2016-11-15 | 2016-11-15 | Balanced high inlet pressure chemical centrifugal pump of axial force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206175234U true CN206175234U (en) | 2017-05-17 |
Family
ID=58684769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621223863.6U Active CN206175234U (en) | 2016-11-15 | 2016-11-15 | Balanced high inlet pressure chemical centrifugal pump of axial force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206175234U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678047A (en) * | 2016-11-15 | 2017-05-17 | 江苏芬奇工业设备制造有限公司 | Chemical centrifugal pump with balanced axial force and high inlet pressure |
| CN107178522A (en) * | 2017-07-07 | 2017-09-19 | 中国科学院工程热物理研究所 | Centrifugal turbine tool, the method for balancing axial thrust with back vane structure |
| CN109595173A (en) * | 2018-12-08 | 2019-04-09 | 烟台龙港泵业股份有限公司 | A kind of cantilever pump suitable for inlet high pressure |
-
2016
- 2016-11-15 CN CN201621223863.6U patent/CN206175234U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678047A (en) * | 2016-11-15 | 2017-05-17 | 江苏芬奇工业设备制造有限公司 | Chemical centrifugal pump with balanced axial force and high inlet pressure |
| CN107178522A (en) * | 2017-07-07 | 2017-09-19 | 中国科学院工程热物理研究所 | Centrifugal turbine tool, the method for balancing axial thrust with back vane structure |
| CN109595173A (en) * | 2018-12-08 | 2019-04-09 | 烟台龙港泵业股份有限公司 | A kind of cantilever pump suitable for inlet high pressure |
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