CN106762680A - A kind of chemical centrifugal pump - Google Patents
A kind of chemical centrifugal pump Download PDFInfo
- Publication number
- CN106762680A CN106762680A CN201611001993.XA CN201611001993A CN106762680A CN 106762680 A CN106762680 A CN 106762680A CN 201611001993 A CN201611001993 A CN 201611001993A CN 106762680 A CN106762680 A CN 106762680A
- Authority
- CN
- China
- Prior art keywords
- pump
- impeller
- backwater
- pump cover
- pump housing
- 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.)
- Pending
Links
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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
-
- 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
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of chemical centrifugal pump, including the pump housing, pump shaft, impeller and pump cover, pump housing one end is water inlet, and the pump housing is provided with delivery port, and pump shaft bearings are worn and connect the pump cover of the encapsulation pump housing other end and stretch into connection impeller in the pump housing, it is characterised in that：The delivery port draws the outer pipeline of a backwater, and the outer pipeline of backwater is provided with overflow valve, and the outer pipeline of backwater is communicated to the pump cover higher-pressure region between pump cover and impeller through pump cover.It is its simple structure, compact, can effectively ensure centrifugal pump axial force balance, control convenient, stabilization.
Description
Technical field
The present invention relates to a kind of centrifugal pump, specifically a kind of chemical centrifugal pump.
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
Mainly designed or back blade design or back impeller design etc. by balancing choma+balance pipe to dynamic balance, 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, then has influence on the service life and pump of pump bearing
Vibration, stability etc..
The content of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of simple structure, compact, centrifugation can be effectively ensured
Pump axial force balance, controls the chemical centrifugal pump of convenient stabilization.
The technical solution adopted by the present invention is：A kind of chemical centrifugal pump, including the pump housing, pump shaft, impeller and pump cover, the pump housing one
It is water inlet to hold, and the pump housing is provided with delivery port, and pump shaft bearings are worn to connect the pump cover for encapsulating the pump housing other end and stretch into the pump housing and connected
Connect impeller, it is characterised in that：The delivery port draws the outer pipeline of a backwater, and the outer pipeline of backwater is provided with overflow valve, backwater outer tube
Road is communicated to the pump cover higher-pressure region between pump cover and impeller through pump cover, and the impeller is provided with back blade towards pump cover side, water inlet
Mouth and delivery port are equipped with pressure sensor.
Using above-mentioned technical proposal, have an advantageous effect in that：Draw branch's backwater outer tube road in the delivery port of pump, install
Overflow valve, when water inlet pressure is normal, lift condition it is normal under, by adjusting overflow valve limit value for normally off, 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 inlet pressure opposite effect power high, 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.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
In figure：The pump housing 1, water inlet 2, delivery port 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 chemical centrifugal pump include the pump housing 1, water inlet 2, delivery port 3, pump cover 4, impeller 5, pump shaft 6, return
Water 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 delivery port 3, and the bearings of pump shaft 6 are worn and connect encapsulation
The pump cover 4 of the pump housing other end stretches into connection impeller 5 in the pump housing, and delivery port 3 is drawn the outer pipeline 8 of a backwater, set on the outer pipeline 8 of backwater
There is overflow valve 9, the outer pipeline of backwater is communicated to the pump cover higher-pressure region 7 between pump cover and impeller through pipeline 81 in the backwater in pump cover.
On the basis of above-described embodiment, impeller can also be provided with back blade towards pump cover side.Back blade may also be placed in simultaneously
In the notopodium piece chamber of pump cover.
On the basis of above-described embodiment, water inlet and delivery port are additionally provided with pressure sensor.
Claims (1)
1. a kind of chemical centrifugal pump, including the pump housing, pump shaft, impeller and pump cover, pump housing one end are water inlet, and the pump housing is provided with water outlet
Mouthful, pump shaft bearings are worn and connect the pump cover of the encapsulation pump housing other end and stretch into connection impeller in the pump housing, it is characterised in that：The water outlet
Mouthful draw the outer pipeline of a backwater, the outer pipeline of backwater is provided with overflow valve, the outer pipeline of backwater through pump cover be communicated to pump cover and impeller it
Between pump cover higher-pressure region, the impeller is provided with back blade towards pump cover side, and water inlet and delivery port are equipped with pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611001993.XA CN106762680A (en) | 2016-11-15 | 2016-11-15 | A kind of chemical centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611001993.XA CN106762680A (en) | 2016-11-15 | 2016-11-15 | A kind of chemical centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106762680A true CN106762680A (en) | 2017-05-31 |
Family
ID=58968080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611001993.XA Pending CN106762680A (en) | 2016-11-15 | 2016-11-15 | A kind of chemical centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762680A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170186Y (en) * | 2008-01-04 | 2008-12-24 | 沈阳鼓风机(集团)有限公司 | Emergency pump |
| CN203067359U (en) * | 2013-03-06 | 2013-07-17 | 新昌德力石化设备有限公司 | Internal exhaust liquid-ring type priming centrifugal pump |
| CN203308726U (en) * | 2013-05-08 | 2013-11-27 | 苏义燕 | Clean water centrifugal pump with internally-arranged motor |
| CN103591054A (en) * | 2013-11-09 | 2014-02-19 | 七台河宝泰隆圣迈煤化工有限责任公司 | Shaft-seal water-cooling heat dissipation protecting system of centrifugal pump |
| CN105570186A (en) * | 2016-03-04 | 2016-05-11 | 浙江工业大学 | Single-stage centrifugal pump capable of achieving self balance of axial force |
| CN206175237U (en) * | 2016-11-15 | 2017-05-17 | 江苏芬奇工业设备制造有限公司 | Chemical centrifugal pump |
-
2016
- 2016-11-15 CN CN201611001993.XA patent/CN106762680A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170186Y (en) * | 2008-01-04 | 2008-12-24 | 沈阳鼓风机(集团)有限公司 | Emergency pump |
| CN203067359U (en) * | 2013-03-06 | 2013-07-17 | 新昌德力石化设备有限公司 | Internal exhaust liquid-ring type priming centrifugal pump |
| CN203308726U (en) * | 2013-05-08 | 2013-11-27 | 苏义燕 | Clean water centrifugal pump with internally-arranged motor |
| CN103591054A (en) * | 2013-11-09 | 2014-02-19 | 七台河宝泰隆圣迈煤化工有限责任公司 | Shaft-seal water-cooling heat dissipation protecting system of centrifugal pump |
| CN105570186A (en) * | 2016-03-04 | 2016-05-11 | 浙江工业大学 | Single-stage centrifugal pump capable of achieving self balance of axial force |
| CN206175237U (en) * | 2016-11-15 | 2017-05-17 | 江苏芬奇工业设备制造有限公司 | Chemical centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |