CN202073846U - Pump shaft balancing device - Google Patents

Pump shaft balancing device Download PDF

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Publication number
CN202073846U
CN202073846U CN2011201172810U CN201120117281U CN202073846U CN 202073846 U CN202073846 U CN 202073846U CN 2011201172810 U CN2011201172810 U CN 2011201172810U CN 201120117281 U CN201120117281 U CN 201120117281U CN 202073846 U CN202073846 U CN 202073846U
Authority
CN
China
Prior art keywords
balancing
disc
pump shaft
balance
plate
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
CN2011201172810U
Other languages
Chinese (zh)
Inventor
吴永旭
彭学斌
张永泉
姜娟
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 East Pump Group Co Ltd
Original Assignee
Shanghai East 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 East Pump Group Co Ltd filed Critical Shanghai East Pump Group Co Ltd
Priority to CN2011201172810U priority Critical patent/CN202073846U/en
Application granted granted Critical
Publication of CN202073846U publication Critical patent/CN202073846U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A pump shaft balancing device comprises a balancing plate and a balancing disc. The edge of the balancing plate is provided with a throttle flange for internally enclosing the balancing disc; the throttle flange is in clearance fit with an external circle of the balancing disc; and an inside contact surface of the balancing disc is an inclined surface. As the edge of the balancing plate of the pump shaft balancing device is provided with the throttle flange, a throttle damping function can be realized, and axial oscillation of a pump shaft caused by rapid pressure change at two ends of the balancing disc due to axial movement of the balancing disc is avoided. After the inside contact surface of the balancing disc is changed into the inclined surface, when the balancing disc contacts with the balancing plate due to change of operating conditions, high pressure can be formed inside and outside the balancing disc, balancing force is increased, contact friction time of the balancing disc and the balancing plate is shortened, and abrasion of the balancing disc and the balancing plate is relieved.

Description

The pump shaft Equilibrator
Technical field
The utility model relates to a kind of pump shaft Equilibrator.
Background technique
In the design of multistage centrifugal pump,, all adopt the Equilibrator of forming by Balance disc, balance plate in order to overcome the axial force of the sensing suction port end that produces in the pump operation.Balance disc carries out work by leaking pressure reduction, and not revealing does not just have equilibrant, but must assurance minimal leak volume production give birth to maximum equilibrant, and pump could efficiently move.Its working principle is: as shown in Figure 1, the B chamber links to each other with the water outlet high pressure water, and the A chamber links to each other with the water intake low-pressure water, because the pressure difference at Balance disc 2 two ends is pointed to the axial force opposite direction that pump operation produces, so make the axial force of pump obtain balance.During pump operation, the B cavity pressure raises, because the B cavity pressure is greater than the A chamber, so Balance disc 2 drives pump shaft 3 and moves to the Q direction, Balance disc 2 and balance plate 1 leave and form the gap, and high pressure water leaks to the A chamber by this gap, and the A cavity pressure increases, when the pressure difference that rises to Balance disc 2 two ends when pressure just in time equaled axial force that pump operation produces, pump rotor reached state of equilibrium.Because the operating mode instability of pump operation, the axial force of its generation also change at any time, so Balance disc also drives rotor and produces at any time and move axially, and reaches state of equilibrium automatically.Because when pump startup or operating conditions change suddenly, Balance disc 2 produces with balance plate 1 and contacts, its surface of contact 21 is the plane, the area of contact is bigger, because axial force is very big, Balance disc and balance plate produce serious wearing and tearing, leakage rate increases, cause the equilibrant deficiency, finally cause Balance disc and balance plate to kill, pump can't be moved.Because general Equilibrator do not have the throttling measure in the Balance disc back, when Balance disc moves to the Q direction, when the gap became big suddenly, leakage rate increased, and Balance disc two ends pressure reduction reduces, and balanced action is corresponding to die down.
The model utility content
In order to guarantee the smooth running of pump, improve the working life of Balance disc and the safe and highly efficient operation of pump, the utility model provides a kind of pump shaft Equilibrator.
The utility model is that the technological scheme that its technical problem of solution is adopted is,
The pump shaft Equilibrator comprises balance plate and Balance disc, and described balance plate edge is provided with the throttling chimb, and in this throttling chimb was enclosed in Balance disc, throttling chimb and Balance disc cylindrical were Spielpassung, and the inboard surface of contact of Balance disc is the inclined-plane.
Further, the gap between described throttling chimb and the Balance disc cylindrical is 0.2mm~0.4mm.
Further, the angle of inclination of described surface of contact is 3 °~5 °.
The beneficial effects of the utility model are, this pump shaft Equilibrator is provided with the throttling chimb at the balance plate edge, can play the throttling damping function, avoided because Balance disc moves axially the Balance disc pressure at two ends that causes and changes rapidly, make pump shaft produce axial oscillation, after the inboard surface of contact of Balance disc changes the inclined-plane into, when operating conditions changes when Balance disc is contacted with balance plate, the outside still can form high pressure in the Balance disc, increased equilibrant, the contact friction time of Balance disc and balance plate is shortened, alleviated wearing and tearing each other.
Description of drawings
Fig. 1 is the user mode schematic representation of existing balance plate, Balance disc;
Fig. 2 is the pump shaft balance device structure schematic representation that the utility model proposes;
Fig. 3 is the user mode schematic representation of pump shaft Equilibrator.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with illustrating and specific embodiment, further set forth the utility model.
As Fig. 2, shown in Figure 3, the pump shaft Equilibrator that the utility model proposes comprises balance plate 100 and Balance disc 200, Balance disc 200 is arranged on the pump shaft 300, described balance plate frontside edge is provided with throttling chimb 110, in this throttling chimb 110 is enclosed in Balance disc 200, throttling chimb 110 is a Spielpassung with Balance disc 200 cylindricals, and the inboard surface of contact 210 of Balance disc 200 is the inclined-plane.
In an embodiment of the present utility model, the gap between described throttling chimb 110 and Balance disc 200 cylindricals is 0.2mm~0.4mm.
In an embodiment of the present utility model, the angle of inclination of described surface of contact 210 is 3 °~5 °.
This pump shaft Equilibrator is provided with the throttling chimb at the balance plate edge, can play the throttling damping function, avoided because Balance disc moves axially the Balance disc pressure at two ends that causes and changes rapidly, the axial oscillation that pump shaft is produced after the inboard surface of contact of Balance disc changes the inclined-plane into, makes Balance disc contact with balance plate when operating conditions changes, the outside still can form high pressure in the Balance disc, increase equilibrant, the contact friction time of Balance disc and balance plate is shortened, alleviated wearing and tearing each other.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (3)

1. the pump shaft Equilibrator comprises balance plate and Balance disc, it is characterized in that, described balance plate edge is provided with the throttling chimb, and in this throttling chimb was enclosed in Balance disc, throttling chimb and Balance disc cylindrical were Spielpassung, and the inboard surface of contact of Balance disc is the inclined-plane.
2. pump shaft Equilibrator according to claim 1 is characterized in that, the gap between described throttling chimb and the Balance disc cylindrical is 0.2mm~0.4mm.
3. pump shaft Equilibrator according to claim 1 is characterized in that, the angle of inclination of described surface of contact is 3 °~5 °.
CN2011201172810U 2011-04-20 2011-04-20 Pump shaft balancing device Expired - Fee Related CN202073846U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201172810U CN202073846U (en) 2011-04-20 2011-04-20 Pump shaft balancing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201172810U CN202073846U (en) 2011-04-20 2011-04-20 Pump shaft balancing device

Publications (1)

Publication Number Publication Date
CN202073846U true CN202073846U (en) 2011-12-14

Family

ID=45111950

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201172810U Expired - Fee Related CN202073846U (en) 2011-04-20 2011-04-20 Pump shaft balancing device

Country Status (1)

Country Link
CN (1) CN202073846U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734231A (en) * 2012-07-03 2012-10-17 芜湖市湖净环保机械有限公司 Balance ring for multi-stage pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102734231A (en) * 2012-07-03 2012-10-17 芜湖市湖净环保机械有限公司 Balance ring for multi-stage pump

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111214

Termination date: 20130420