CN201671823U - Single-stage and single-suction centrifugal pump - Google Patents

Single-stage and single-suction centrifugal pump Download PDF

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Publication number
CN201671823U
CN201671823U CN 201020187534 CN201020187534U CN201671823U CN 201671823 U CN201671823 U CN 201671823U CN 201020187534 CN201020187534 CN 201020187534 CN 201020187534 U CN201020187534 U CN 201020187534U CN 201671823 U CN201671823 U CN 201671823U
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CN
China
Prior art keywords
pump
impeller
mechanical seal
chamber
motor
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
Application number
CN 201020187534
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Chinese (zh)
Inventor
王者文
施勇
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.)
Shanghai Kaiquan Pump Group Co Ltd
Original Assignee
Shanghai Kaiquan Pump Group 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 Shanghai Kaiquan Pump Group Co Ltd filed Critical Shanghai Kaiquan Pump Group Co Ltd
Priority to CN 201020187534 priority Critical patent/CN201671823U/en
Application granted granted Critical
Publication of CN201671823U publication Critical patent/CN201671823U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a single-stage and single-suction centrifugal pump comprising a motor, a pump cover, a pump body, an impeller, a U-shaped mechanical seal and a pump shaft, wherein the motor is connected and fixed on the pump cover through screw threads, the pump shaft is connected with the motor, and the pump cover is connected with the pump body the interior of which is divided into a water sucking chamber and a water pressing chamber by the vane wheel connected with the pump shaft; and the U-shaped mechanical seal is arranged at the junction between the pump cover and the pump shaft. The single-stage and single-suction centrifugal pump has the advantages of reliable running, convenient maintenance, high pumping efficiency, good cavitation property as well as low vibration and noise, thereby meeting the requirements on energy saving and environmental protection.

Description

Single stage single suction volute pump
Technical field
The utility model relates to a kind of single stage single suction volute pump (KQL/KQW type), relates in particular to the mechanical seal structure in this single stage single suction volute pump.
Background technique
Centrifugal pump is a pump series products important in the fluid machinery, is fit to pumps water and other not high liquid of viscosity, has that range of flow is big, flow and pressure stability, rotating speed is higher and compact structure, in light weight, convenient and reliable operation and the cheap advantage of maintenance cost.
The shared same path of mechanical sealing static ring floatability difference in the prior art single stage single suction volute pump and mechanical seal rinsing and coolant path and pump exhaust causes the problem of pump outlet valve cavitation damage.
Summary of the invention
The utility model technical issues that need to address have provided a kind of single stage single suction volute pump, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: motor, pump cover, the pump housing, impeller, the mechanical seal of U type and pump shaft; Described motor is fixed on the pump cover by being threaded, and pump shaft links to each other with motor, and pump cover is connected with the pump housing, and the impeller that is connected with pump shaft in the pump housing is separated into suction chamber and pumping chamber two-part; The mechanical seal of described U type is placed in the binding site of pump cover and pump shaft.
Compared with prior art, the beneficial effects of the utility model are: have advantage reliable, easy to maintenance, that pump efficiency is high, cavitation performance is good, vibration is little and noise is low, meet the energy-conserving and environment-protective requirement.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
By Fig. 1, Fig. 2 as seen: the utility model comprises: motor 1, pump cover 2, the pump housing 3, impeller 5, the mechanical seal 7 of U type and pump shaft 8; Described motor 1 is fixed on by being threaded on the pump cover 2, and pump shaft 8 links to each other with motor 1, and pump cover 2 is connected with the pump housing 3, and the impeller 5 that is connected with pump shaft 8 in the pump housing 3 is separated into suction chamber 4 and pumping chamber 6 two-part; Described U type mechanical seal 7 is placed in the binding site of pump cover 2 and pump shaft 8;
Described impeller 5 is made up of preoral loop 51, blade 52, back choma 53, impeller hub 54 and equalizing orifice 55; Impeller hub 54 links to each other with motor 1 by pump shaft 8, and impeller preoral loop 51 will be divided into two working rooms in the pump housing 3, and impeller preoral loop 51 is following to be suction chamber 4, is pumping chamber 6 above; Suction chamber links to each other with Pump Suction Nozzle, and pumping chamber links to each other with pump discharge; Described pump cover 2 is made up of exhaust passageway 21, the coolant path 22 that links to each other with the mechanical seal chamber and the sealing opening ring 23 of settling outlet valve 24; The back choma 53 of impeller is formed the mechanical seal chamber with the sealing opening ring of pump cover 23, is provided with U type mechanical seal 7 in the mechanical seal chamber; Described U type mechanical seal 7 comprises: O RunddichtringO 71, stationary ring 72 and rotating ring 73; Stationary ring 72 is fixed on the pump cover 2 by O RunddichtringO 71, and rotating ring 73 is done high speed rotating with impeller 5; Rotating ring 73 and stationary ring 72 form end face seal by friction pair.
The mechanical seal of U type substitutes the traditional mechanical sealing in the utility model, has solved the difficult problem of stationary ring floatability difference in the existing traditional mechanical sealing, improves the reliability that mechanical seal is installed and used.It has improved mechanical seal rinsing and coolant path simultaneously, has solved mechanical seal rinsing and coolant path and the shared same path of pump exhaust in the original structure, causes the difficult problem of pump outlet valve cavitation damage.
The utlity model has following advantage:
1: KQL/KQW type single stage single suction volute pump of the present utility model have independently mechanical seal rinsing and a coolant path, solved the difficult problem of pump outlet valve cavitation damage.
The stationary ring of 2:U type mechanical seal adopts the O RunddichtringO to be fixed on the pump cover, has solved the difficult problem of stationary ring floatability difference in the existing traditional mechanical sealing.
The utility model KQL/KQW type single stage single suction volute pump is mainly used in industries such as oil, electric power, chemical industry, iron and steel, medicine, environmental protection, fire-fighting, municipal administration, water purification, defence and military, textile printing and dyeing, digging ore dressing, thermodynamic system, heating, air-conditioning circulation and civil building.
Referring to Fig. 1, the utility model is a KQL/KQW modified model single stage single suction volute pump, and it is equipped with motor 1, pump cover 2, the pump housing 3, impeller 5, U type mechanical seal 7, pump shaft 8.Motor 1 is fixed on by being threaded on the pump cover 2, and pump cover 2 is connected with pump case 3, and the pump housing 3 is separated into suction chamber 4 and pumping chamber 6 two-part by impeller 5.
Impeller 5 (Fig. 2) mainly is made up of preoral loop 51, blade 52, back choma 53, impeller hub 54 and equalizing orifice 55.Impeller hub 54 links to each other with motor 1 by pump shaft 8, and impeller 5 is divided into two working rooms by impeller preoral loop 51 with the pump housing 3, and impeller preoral loop 51 is following to be suction chamber 4, is pumping chamber 6 above.Suction chamber links to each other with Pump Suction Nozzle, and pumping chamber links to each other with pump discharge.Pump cover 2 is provided with U type mechanical seal 7 with the binding site of pump shaft 8, and rotating ring 73 is done high speed rotating with impeller 5 in the mechanical seal of U type, and stationary ring 72 is fixed on the pump cover by O RunddichtringO 71 in the mechanical seal of U type.Stationary ring produces floatability by the O RunddichtringO like this, and rotating ring and stationary ring form end face seal by friction pair, reaches to stop the interior liquid leakage of pump and prevent that the pump outer air from leaking into the purpose in the pump.
Pump cover 2 (Fig. 2) mainly is made up of exhaust passageway 21, the coolant path 22 that links to each other with the mechanical seal chamber, sealing opening ring 23, outlet valve 24.The back choma 53 of impeller is formed the mechanical seal chamber with the sealing opening ring of pump cover 23.
The working procedure of KQL/KQW modified model single stage single suction volute pump of the present utility model is as follows:
Require to fill in the pump exhaust passageway of liquid and process pump cover during pump startup by the effective exhaust of outlet valve, impeller is high speed rotating under driven by motor, produce vacuum at the impeller inlet place, the liquid of suction line is drawn onto impeller inlet, the impeller high speed rotating produces centrifugal force, liquid is transported to impeller outer edge by a plurality of interlobate fluid passage of impeller, and liquid is discharged to pumping chamber and finishes moderating process, and speed can transfer the pressure energy to.Liquid is finally discharged by exhaust port.Finish the overall process that the mechanical energy of motor is changed into the energy (kinetic energy, pressure energy, potential energy) of liquid, realize simultaneously liquid by low pressure to high pressure; By lower position to the high position; Purpose with long distance conveying.
The highly pressurised liquid of pumping chamber small part enters into the mechanical seal chamber by the coolant path that links to each other with the mechanical seal chamber on the pump cover simultaneously, and the equalizing orifice by impeller is discharged to impeller inlet, finish rotating ring and stationary ring flushing and cooling action in the mechanical seal of U type, realize the purpose of U type mechanical seal reliably working.
Organic cooperation of above-mentioned each constituent elements has been arranged just, key is to have had that stationary ring produces floatability by the O RunddichtringO in the coolant path that independently links to each other with the mechanical seal chamber and the mechanical seal of U type, could guarantee the purpose of the mechanical seal reliably working of the utility model KQL/KQW type single stage single suction volute pump.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the utility model, and be not with opposing qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of claim of the present utility model variation, the modification of the foregoing description.

Claims (2)

1. a single stage single suction volute pump is characterized in that comprising: motor, pump cover, the pump housing, impeller, the mechanical seal of U type and pump shaft; Described motor is fixed on the pump cover by being threaded, and pump shaft links to each other with motor, and pump cover is connected with the pump housing, and the impeller that is connected with pump shaft in the pump housing is separated into suction chamber and pumping chamber two-part; The mechanical seal of described U type is placed in the binding site of pump cover and pump shaft.
2. single stage single suction volute pump according to claim 1 is characterized in that: described impeller is made up of preoral loop, blade, back choma, impeller hub and equalizing orifice; Impeller hub links to each other with motor by pump shaft, and the impeller preoral loop will be divided into two working rooms in the pump housing, is suction chamber below the impeller preoral loop, is pumping chamber above; Suction chamber links to each other with Pump Suction Nozzle, and pumping chamber links to each other with pump discharge; Described pump cover is made up of the exhaust passageway of settling outlet valve, coolant path and the sealing opening ring that links to each other with the mechanical seal chamber; The back choma of impeller and the sealing opening ring of pump cover are formed the mechanical seal chamber, are provided with the mechanical seal of U type in the mechanical seal chamber; The mechanical seal of described U type comprises: O RunddichtringO, stationary ring and rotating ring; Stationary ring is fixed on the pump cover by the O RunddichtringO, and rotating ring is done high speed rotating with impeller; Rotating ring and stationary ring form end face seal by friction pair.
CN 201020187534 2010-05-07 2010-05-07 Single-stage and single-suction centrifugal pump Expired - Fee Related CN201671823U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201020187534 CN201671823U (en) 2010-05-07 2010-05-07 Single-stage and single-suction centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201020187534 CN201671823U (en) 2010-05-07 2010-05-07 Single-stage and single-suction centrifugal pump

Publications (1)

Publication Number Publication Date
CN201671823U true CN201671823U (en) 2010-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201020187534 Expired - Fee Related CN201671823U (en) 2010-05-07 2010-05-07 Single-stage and single-suction centrifugal pump

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CN (1) CN201671823U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734174A (en) * 2012-07-05 2012-10-17 南京工业大学 Two-stage and two-discharge graphite pump
CN102758777A (en) * 2011-04-28 2012-10-31 郑国� Guide vane type dynamic-seal self-priming pump
CN103352873A (en) * 2013-07-30 2013-10-16 强胜精密机械(苏州)有限公司 Improved spiral flow constant pressure pump
CN103967844A (en) * 2014-03-24 2014-08-06 江苏大学 Upper ring structure with cylinder and arranged on mining vertical submersible pump with exterior single-stage impeller
CN104074769A (en) * 2013-03-25 2014-10-01 无锡华润上华科技有限公司 Water pumping system of centrifugal pump
CN107859630A (en) * 2017-10-19 2018-03-30 江苏大学镇江流体工程装备技术研究院 A kind of vertical pump suction chamber design method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102758777A (en) * 2011-04-28 2012-10-31 郑国� Guide vane type dynamic-seal self-priming pump
CN102734174A (en) * 2012-07-05 2012-10-17 南京工业大学 Two-stage and two-discharge graphite pump
CN104074769A (en) * 2013-03-25 2014-10-01 无锡华润上华科技有限公司 Water pumping system of centrifugal pump
CN103352873A (en) * 2013-07-30 2013-10-16 强胜精密机械(苏州)有限公司 Improved spiral flow constant pressure pump
CN103352873B (en) * 2013-07-30 2016-04-13 强胜精密机械(苏州)有限公司 The spiral flow constant-pressure pump improved
CN103967844A (en) * 2014-03-24 2014-08-06 江苏大学 Upper ring structure with cylinder and arranged on mining vertical submersible pump with exterior single-stage impeller
CN107859630A (en) * 2017-10-19 2018-03-30 江苏大学镇江流体工程装备技术研究院 A kind of vertical pump suction chamber design method

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101215

Termination date: 20130507

C17 Cessation of patent right