CN106762680A - A kind of chemical centrifugal pump - Google Patents

A kind of chemical centrifugal pump Download PDF

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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
pipeline
cover
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
Application number
CN201611001993.XA
Other languages
Chinese (zh)
Inventor
盛绛
肖爱华
于伟
戴旭凯
朱平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Finch Industrial Equipment Manufacturing Co Ltd
Original Assignee
Jiangsu Finch Industrial Equipment Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Finch Industrial Equipment Manufacturing Co Ltd filed Critical Jiangsu Finch Industrial Equipment Manufacturing Co Ltd
Priority to CN201611001993.XA priority Critical patent/CN106762680A/en
Publication of CN106762680A publication Critical patent/CN106762680A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/041Axial thrust balancing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293Details of fluid inlet or outlet
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type

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

A kind of chemical centrifugal pump
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.
CN201611001993.XA 2016-11-15 2016-11-15 A kind of chemical centrifugal pump Pending CN106762680A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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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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

Application publication date: 20170531

WD01 Invention patent application deemed withdrawn after publication