CN203130596U - Serial inducer - Google Patents

Serial inducer Download PDF

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Publication number
CN203130596U
CN203130596U CN 201320141111 CN201320141111U CN203130596U CN 203130596 U CN203130596 U CN 203130596U CN 201320141111 CN201320141111 CN 201320141111 CN 201320141111 U CN201320141111 U CN 201320141111U CN 203130596 U CN203130596 U CN 203130596U
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CN
China
Prior art keywords
inducer
helical blade
serial
spiral blade
blade
Prior art date
Application number
CN 201320141111
Other languages
Chinese (zh)
Inventor
韩安达
林德生
Original Assignee
浙江天德泵业有限公司
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 浙江天德泵业有限公司 filed Critical 浙江天德泵业有限公司
Priority to CN 201320141111 priority Critical patent/CN203130596U/en
Application granted granted Critical
Publication of CN203130596U publication Critical patent/CN203130596U/en

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Abstract

The utility model relates to a serial inducer of a high-speed centrifugal pump. The serial inducer comprises a shaft body, a first spiral blade and a second spiral blade; the first and second spiral blades are fixedly arranged on the shaft body, the first spiral blade is smaller than the second spiral blade in liquid flow angle and the interval between the first and second spiral blades forms a buffering space. According to the serial inducer, the two groups of inducer blades with the same pitch and the different liquid flow angles are connected in series, and the buffering space is remained between the first and second spiral blades; when liquid passes the inducer, the first spiral blade can generate higher cavitation performance due to the smaller liquid flow angle, the buffering space balances the pressure in the centrifugal pump, and the second spiral blade can generate higher lift due to the larger liquid flow angle, thus meeting the energy need of the inlet of an impeller; and compared with the existing inducer, the serial inducer disclosed by the utility model has the advantages of better cavitation performance, simple structure and reduced abrasion and lowered manufacturing cost.

Description

A kind of tandem inducer

Technical field

The utility model belongs to a kind of inducer of centrifugal pump, especially relates to a kind of tandem inducer of high speed centrifugal pump.

Background technique

The cavitation performance that an inducer improves pump all will be installed in impeller front portion in the centrifugal pump.When the maximum cavitation specific speed of centrifugal pump surpasses after 4000, the inducer of existing most uniform pitch or variable pitch is all difficult obtains more satisfactory cavitation performance.In the prior art, application number: adopted in 02220360.5 the technology to couple together use before and after 2 inducers, reach the purpose that improves cavitation performance, two inducer design accuracies are like this had relatively high expectations, axially cantilever lengthens, and has improved the difficulty of part processing and the input of cost greatly.

Summary of the invention

The utility model is in order to remedy the deficiencies in the prior art, provide a kind of simple in structure, cavitation performance good, adopt the one-body molded tandem inducer of being convenient to manufacturing.

The utility model is by the following technical solutions: a kind of tandem inducer, it is characterized in that: comprise axis body, first helical blade and second helical blade, what described first helical blade and second helical blade were fixing is arranged on the axis body, the flow angle of described first helical blade is less than the flow angle of second helical blade, be provided with between first helical blade and second helical blade at interval, described interval forms buffer space.

As a kind of improvement, the axis body end of the described second helical blade place side is provided with threaded mounting hole, and described axis body can be installed in the rotating shaft of impeller by being threaded between the rotating shaft of threaded mounting hole and impeller, and integral body is packed into use in the centrifugal pump.

As a kind of improvement, the blade quantity of described first helical blade is the 2-3 sheet, and the blade quantity of described second helical blade is the 3-5 sheet.

The beneficial effects of the utility model: the uniform pitch inducer blade of two groups of different flow angles is cascaded, and reserves buffer space in the centre; When liquid process inducer, the first helical blade flow angle is less, can produce higher cavitation performance, pressure in the buffer space equilibrium centrifugation pump, the second helical blade flow angle is bigger, then can produce higher lift, thereby satisfies the energy demand of impeller inlet; Better than existing inducer cavitation performance, and simple in structure, reduce wearing and tearing, reduced manufacture cost.

Description of drawings

Fig. 1 is the utility model tandem inducer centrifugal pump structure sectional view of packing into.

Fig. 2 be the utility model tandem inducer partly cut open figure.

Embodiment

Below in conjunction with accompanying drawing specific embodiment of the utility model is elaborated.

As shown in Figure 1, 2, be the specific embodiment of the utility model tandem inducer.This tandem inducer comprises axis body 1, first helical blade 2 and second helical blade 3, first helical blade 2 and 3 fixing being arranged on the axis body 1 of second helical blade, the flow angle of first helical blade 2 is less than the flow angle of second helical blade 3, be provided with between first helical blade 2 and second helical blade 3 at interval, described interval forms buffer space 4.Axis body 1 end of second helical blade, 3 place sides is provided with threaded mounting hole, and axis body 1 can be installed in the rotating shaft of impeller by being threaded between the rotating shaft of threaded mounting hole and impeller, and integral body is packed into use in the centrifugal pump.The blade quantity of first helical blade 2 is 2, and the blade quantity of second helical blade 3 is 3.

Impeller and inducer are assembled into one and pack into and use in the centrifugal pump.At first pass through inducer when liquid enters centrifugal pump, first helical blade 2 arranges 2 blades and has less flow angle, can produce higher cavitation performance; The buffer space 4 of first helical blade 2 and second helical blade 3 plays the effect of balance pressure, prevents that the excessive performance that influences of pressure difference strengthens parts depreciation in the centrifugal pump; Second helical blade 3 arranges 4 blades and has bigger flow angle, can produce higher lift, thereby satisfies the energy demand of impeller inlet.

Claims (3)

1. tandem inducer, it is characterized in that: comprise axis body (1), first helical blade (2) and second helical blade (3), what described first helical blade (2) and second helical blade (3) were fixing is arranged on the axis body (1), the flow angle of described first helical blade (2) is less than the flow angle of second helical blade (3), be provided with between first helical blade (2) and second helical blade (3) at interval, described interval forms buffer space (4).
2. a kind of tandem inducer according to claim 1, axis body (1) end that it is characterized in that described second helical blade (3) place side is provided with threaded mounting hole, described axis body (1) can be installed in the rotating shaft of impeller by being threaded between the rotating shaft of threaded mounting hole and impeller, and integral body is packed into use in the centrifugal pump.
3. .A kind of tandem inducer according to claim 1 and 2, the blade quantity that it is characterized in that described first helical blade (2) is the 2-3 sheet, the blade quantity of described second helical blade (3) is the 3-5 sheet.
CN 201320141111 2013-03-26 2013-03-26 Serial inducer CN203130596U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320141111 CN203130596U (en) 2013-03-26 2013-03-26 Serial inducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320141111 CN203130596U (en) 2013-03-26 2013-03-26 Serial inducer

Publications (1)

Publication Number Publication Date
CN203130596U true CN203130596U (en) 2013-08-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320141111 CN203130596U (en) 2013-03-26 2013-03-26 Serial inducer

Country Status (1)

Country Link
CN (1) CN203130596U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105874206A (en) * 2014-01-12 2016-08-17 阿尔法拉瓦尔股份有限公司 Self-priming centrifugal pump
CN106762809A (en) * 2016-12-30 2017-05-31 西安航天动力研究所 A kind of inducer for suppressing cavitation vibration
CN109162965A (en) * 2018-11-06 2019-01-08 许胡贝 A kind of energy-saving water pump for accelerating water transmission
US10422337B2 (en) 2014-01-12 2019-09-24 Alfa Laval Corporate Ab Self-priming centrifugal pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105874206A (en) * 2014-01-12 2016-08-17 阿尔法拉瓦尔股份有限公司 Self-priming centrifugal pump
CN105874206B (en) * 2014-01-12 2019-04-19 阿尔法拉瓦尔股份有限公司 Self-priming centrifugal pump
US10371151B2 (en) 2014-01-12 2019-08-06 Alfa Corporate Ab Self-priming centrifugal pump
US10422337B2 (en) 2014-01-12 2019-09-24 Alfa Laval Corporate Ab Self-priming centrifugal pump
CN106762809A (en) * 2016-12-30 2017-05-31 西安航天动力研究所 A kind of inducer for suppressing cavitation vibration
CN109162965A (en) * 2018-11-06 2019-01-08 许胡贝 A kind of energy-saving water pump for accelerating water transmission
CN109162965B (en) * 2018-11-06 2020-11-20 台州威斯顿机电有限公司 Energy-saving water pump capable of accelerating water transmission

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