CN103062120B - Sea water pump with elastic body impeller - Google Patents
Sea water pump with elastic body impeller Download PDFInfo
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- CN103062120B CN103062120B CN201310047878.6A CN201310047878A CN103062120B CN 103062120 B CN103062120 B CN 103062120B CN 201310047878 A CN201310047878 A CN 201310047878A CN 103062120 B CN103062120 B CN 103062120B
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Abstract
The invention discloses a sea water pump with an elastic body impeller. The sea water pump comprises a housing, a water pump shaft, bearings, a water seal, the elastic body impeller, an impeller gasket and an end cover, wherein the two axial ends of a working chamber are respectively closed by the inner side of the end cover and one side of the impeller gasket; the end face of the working chamber is in the form of a closed curve which is divided into four corners delta 0, beta, gamma and epsilon, the delta 0 corner corresponds to a water absorption curve, the corner beta corresponds to a water delivery arc, the corner gamma corresponds to a drainage curve, and the corner epsilon corresponds to a sealing arc; and the water absorption curve and the drainage curve are both sine curves, and a maximal lift range h of the sine curve is equal to the difference between a radius R of the drainage curve and a radius r of the sealing arc. According to the sea water pump with the elastic body impeller, the structure is compact, speed and acceleration curves are continuous and free of jumping, inertial shock force is avoided, the high-speed operation of the sea water pump is facilitated, and the abrasion on the elastic body impeller is little.
Description
Technical field
The present invention relates to a kind of cooling water pump of diesel engine, particularly a kind of extracting seawater is by the sea water pump of cools down diesel engine Inner eycle fresh water, belongs to positive displacement fluid pump technical field.
Background technique
Boats and ships are when ocean navigation, and sea water pump extracting seawater pumps into cools down diesel engine Inner eycle fresh water, for cooling diesel engine cylinder block or other heating component.The rubber impeller blade that rubber vane type sea water pump driven is arranged in the oblate work chamber of sea water pump has stronger elasticity and pliability, when rubber impeller rotates, utilize rubber tree leaf to bend, volume-variation when resetting between rubber tree leaf carries out pump water, the defect such as overcome complex structure that existing diesel sea water pump exists, cost is high, rate of fault is high.Rubber vane type sea water pump driven uses the elastic rubber impeller of overall simplification structure to instead of rigid telescopic formula blade impeller, rotator type sea water pump is reached, and structure is simple, cost is low, the object of failure rate is low, this pump has that suction capacity is high, internal leakage is little, suction efficiency is high simultaneously, corrosion resistance is strong, change the impeller advantage such as convenient and safe and reliable rapidly, is therefore selected by increasing user.
The work chamber of existing rubber vane type sea water pump driven is two kinds, one is integrated type work chamber, its sectional shape is oval, utilize the change in radius of four heart ellipses that volume between blade is changed and carry out pump water, in order to ensure the sealing of water pump intake-outlet, certain distance must be left between intake-outlet, therefore when rubber impeller is from water outlet to water intake rotation process, after water outlet between two blades is closed completely, because change in radius makes interlobate space still be squeezed, thus " tired water " phenomenon that generation hydraulic pressure increases, until it turns over break point, rubber impeller and water pump spindle are subject to extra radial pressure, affect the working life of rubber impeller and water pump spindle, add the reactive power loss of water pump simultaneously.The patent No. be 201120051929.9 utility model patent " a kind of impeller-type sea water pump of elastic rubber impeller " disclose another kind of made up work chamber, its sectional shape is an assembled crescent moon ring on the upside of the water intake of circular work chamber and water outlet, work chamber's cross section is made to become the oblateness of upper and lower different radii, this impeller-type sea water pump does not only overcome " tired water " problem of the first integrated type work chamber aforementioned, simultaneously because crescent moon ring two ends and circular cross section work chamber cannot accomplish to be connected smoothly, add the impact to rubber impeller blade and wearing and tearing.In addition, the intake-outlet of all sea water pumps and the pump housing are all an entirety, and therefore, the water transport port direction of its intake-outlet can not change, thus reduce flexibility and versatility that water pump installs and uses.
Summary of the invention
The object of the invention is the defect overcoming existing rubber vane type sea water pump driven, a kind of rubber vane type sea water pump driven avoiding occurring tired water phenomenon is provided, extend the working life of rubber impeller.
The present invention is achieved by the following technical programs:
A kind of sea water pump with elastic body impeller, comprise housing, water pump spindle, bearing, water seal, elastomer impeller, impeller spacer and end cap, be bearing in shell one end by pair of bearings in the middle part of described water pump spindle, shell one end is extended in water pump spindle one end, and the water pump spindle the other end is fixedly connected with elastomer impeller; Described elastomer impeller radially outer edge is inlaid in the work chamber of the housing the other end, and impeller spacer is arranged on work chamber one end face; In described water seal press-in housing, be arranged on the water pump spindle between elastomer impeller and pair of bearings; Described end cap is fixed on housing the other end end face, and housing side is provided with water intake, and housing opposite side is provided with water outlet; The axial two ends of described work chamber are respectively by one side closed with impeller spacer inside end cap, and work chamber's end face is closed curve, and described closed curve is divided within the scope of 360 °
, β, γ and ε tetra-corners,
the corresponding water suction curves of corner, the corresponding water delivery circular arc of β-bend, the corresponding discharged water curve of γ corner, ε corner correspondence sealing circular arc; Water suction curves and discharged water curve are sinusoidal curve, and water delivery radius of arc R-seals circular arc radius r=sinusoidal curve maximum lift h;
Sinusoidal curve radial displacement equation S=h (
-
sin (
))
Wherein, h is sinusoidal curve maximum radial displacement amount,
for the variable turning angle that water suction curves is corresponding, the corner of corresponding water suction curves
equal with corresponding discharged water curve γ corner.
Object of the present invention can also be realized further by following technical measures.
Aforesaid sea water pump with elastic body impeller, wherein each curve of work chamber's end face connects at the public cusp position kiss of respective corresponding corner; From housing the other end end view, rotate clockwise direction according to elastomer impeller,
in angle range, water suction curves upper end is kissed with sealing circular arc one end and is connect, along with corner constantly increases, water suction curves downward radial direction from the sinusoidal curve zero-bit of upper end increases gradually, until water suction curves lower extreme point rises to sinusoidal maximum lift h point position, water suction curves is kissed in h point position and water delivery circular arc one end and is connect; In γ angle range, discharged water curve lower end from sinusoidal curve maximum lift h point upwards radial direction reduce gradually, until when rising to sinusoidal curve null positions, to kiss with the sealing circular curve the other end with discharged water curve upper end and connect.
Aforesaid sea water pump with elastic body impeller, the radius/water delivery radius of arc R of wherein said elastomer impeller is 1.04 ~ 1.05; The least radius formed after the bending blade of elastomer impeller/sealing circular arc radius r is 0.94 ~ 0.95; Described
be 60 ° ± 5 ° with γ, described β is 90 ° ± 5 °, and described ε is 150 ° ± 5 °.
Aforesaid sea water pump with elastic body impeller, wherein said water intake communicates with water suction curves and water delivery circular arc one end, described water outlet and discharged water curve and seal circular arc one end and communicate.
Compact structure of the present invention, from sinusoidal curve radial displacement equation, its velocity and acceleration curve is continuous, does not have jumping phenomenon, can not produce inertial impact force, be conducive to running up of sea water pump, and little to the wearing and tearing of elastomer impeller.The water suction curves of work chamber of the present invention and the radial variation amount of discharged water curve to work chamber center have employed acceleration diagram, its advantage is in a sinusoidal cycles, each blade of sea water pump elastomer impeller is when entering, exiting water suction curves and discharged water curve, its radial velocity, acceleration are all 0, thus ensure that pump operation is steady.Due to the water suction curves of water pump and discharged water curve symmetrical relative to spindle central, and hard-over
equal with γ, after the blade and the change of water pump shaft sense of rotation of elastomer impeller, its intake-outlet is interchangeable.In order to fully use the sine function characteristic of one-period, the present invention is that water suction curves and discharged water curve radial displacement sine function increase an angle restriction variable
, thus make pump sump curve and discharged water curve corner be 0 ~
in scope, there is the sinusoidal chart picture of a complete cycle, meet usage requirement.The water delivery circular arc of work chamber and sealing circular arc are respectively the circular arc of different radii, and avoid sea water pump to produce tired water phenomenon, make sea water pump under identical flow, the amount of deformation of elastomer impeller reduces greatly, extends the working life of elastomer impeller.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is work chamber's end view of inventive shell;
Fig. 4 is the zoomed-in view of water suction curves.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1 to 4, the present invention includes housing 1, water pump spindle 2, bearing 3, water seal 4, elastomer impeller 5, impeller spacer 6 and end cap 7, the housing 1 of the present embodiment adopts stainless steel to make, and intensity is high, Corrosion Protection good, and elastomer impeller 5 adopts rubber to make.Be bearing in housing 1 right-hand member by pair of bearings 3 in the middle part of water pump spindle 2, housing 1 right-hand member is extended in water pump spindle 2 one end, and the other end is fixedly connected with by serration with elastomer impeller 5.The center of elastomer impeller 5 is cylindrical body 51, radial direction extends into radial uniform multiple blades 52, elastomer impeller more than 5 blade 52 radially outer edge is inlaid in the work chamber 11 of housing 1 the other end, impeller spacer 6 is arranged on work chamber 11 right side, water seal 4 is pressed in housing 1, be arranged on the water pump spindle 2 between elastomer impeller 5 and pair of bearings 3, water seal 4 has separated the work chamber 11 of housing 1 left end and the drive cavity 12 of right-hand member.End cap 7 is fixed on housing 1 left end end face, and by O-ring seals 8 seal operation chamber 11.Be provided with water intake 13 on the left of housing 1, right side is provided with water outlet 14, and the axial two ends of work chamber 11 are respectively by one side closed with impeller spacer 6 inside end cap 7, and work chamber 11 end face is closed curve, and described closed curve is divided within the scope of 360 °
, β, γ and ε tetra-corners,
the corresponding water suction curves 111 of corner, the corresponding water delivery circular arc 112 of β-bend, the corresponding discharged water curve 113 of γ corner, ε corner correspondence sealing circular arc 114; Water suction curves 111 and discharged water curve 113 are sinusoidal curve, water delivery circular arc 112 radius R-sealing circular arc 114 radius r=sinusoidal curve maximum lift h;
Sinusoidal curve radial displacement equation S=h (
-
sin (
))
Wherein, h is sinusoidal curve maximum radial displacement amount,
for the variable turning angle of water suction curves 111 or discharged water curve 113 correspondence, the corner of water suction curves 111
equal with the γ corner of corresponding discharged water curve 113.
The each curve of work chamber 11 end face connects at the public cusp position kiss of respective corresponding corner; From housing the other end end view, rotate clockwise direction according to elastomer impeller 5,
in angle range, water suction curves 111 upper end is kissed with sealing circular arc 114 one end and is connect, along with corner constantly increases, water suction curves 111 downward radial direction from the sinusoidal curve zero-bit of upper end increases gradually, until water suction curves lower extreme point rises to sinusoidal maximum lift h point position, water suction curves 111 is kissed in h point position and water delivery circular arc 112 one end and is connect; In γ angle range, discharged water curve 113 lower end from sinusoidal curve maximum lift h point upwards radial direction reduce gradually, until when rising to sinusoidal curve null positions, to kiss with the sealing circular curve the other end with discharged water curve 113 upper end and connect.
Radius/water delivery radius of arc the R of the elastomer impeller 5 of the present embodiment is 1.05, guarantees that blade 52 radially outer edge is resisted against in work chamber 11 after bending, reaches good sealing effect.The elastomer impeller 5 of the present embodiment is after its blade 52 is bending, and the least radius/sealing circular arc radius r of formation is 0.94 ~ 0.95; Guarantee that water pump has enough volume spaces, control again the amount of deformation of blade 52 simultaneously, extend its working life.The present embodiment
be 60 ° with γ, β is 90 °, and ε is 150 °.Water intake 13 communicates with water suction curves 111 and water delivery circular arc 112 one end, water outlet 14 and discharged water curve 113 and seal circular arc 114 one end and communicate.
The drawing method of water suction curves 111 or discharged water curve 113 is as follows:
1, as shown in Figure 4, set up rectangular coordinate system, at true origin O as Radius be
unit circle and 8 deciles, unit circle 8 equal diversion point is illustrated connection, angle axle intercepts
=60 °, and make 8 deciles, exist simultaneously
place's work is highly the straight line 8Q of h, connects OQ; Respectively to the horizontal intersection point on unit circle equal diversion point and S axle, make the parallel lines of OQ and crossing with angle bisecting line, in order with smooth curve connect each point become needed for sinusoidal curve.
2, two concentric circles are drawn by water delivery circular arc 112 radius R 1 and sealing circular arc 114 radius R, according to
, the respective angle of β, γ, ε and the center line relative to circle, determine water suction curves 111 or discharged water curve 113 two ends respectively with water delivery circular arc 112, the interface point sealing circular arc 114.
3, respectively to water suction curves 111 correspondence
8 deciles are made in the γ interval interval, discharged water curve is corresponding, thus obtain the equal diversion point in water suction curves 111 interval or discharged water curve 113 interval.
4, connect the equal diversion point on the center of circle and water delivery circle, form bisectrix.
5, take equal diversion point as starting point, bisectrix distinguishes height corresponding in cut-away view 4 in order, form arc point.
6, respectively each arc point is coupled together with smooth curve, form water suction curves 111, discharged water curve 113.
The present invention utilizes sinusoidal acceleration curve, elastomer impeller 5 is being entered and the water suction curves 111 of chamber 11 of deactivating or discharged water curve 113 brief acceleration are zero, avoid acceleration to the impact of elastomer impeller 5 and water pump spindle 2, in addition, if by the elastomer of elastomer impeller 5 when loading work chamber 11, its compression sense of rotation is reverse, then can realize water pump intake-outlet and exchange, and to be namely the interval or discharged water curve of γ be water suction curves
interval.
In addition to the implementation, the present invention can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (5)
1. a sea water pump with elastic body impeller, comprise housing, water pump spindle, bearing, water seal, elastomer impeller, impeller spacer and end cap, be bearing in shell one end by pair of bearings in the middle part of described water pump spindle, shell one end is extended in water pump spindle one end, and the water pump spindle the other end is fixedly connected with elastomer impeller; Described elastomer impeller radially outer edge is inlaid in the work chamber of the housing the other end, and impeller spacer is arranged on work chamber one end face; In described water seal press-in housing, be arranged on the water pump spindle between elastomer impeller and pair of bearings; Described end cap is fixed on housing the other end end face, and housing side is provided with water intake, and housing opposite side is provided with water outlet; It is characterized in that, the axial two ends of described work chamber are respectively by one side closed with impeller spacer inside end cap, and work chamber's end face is closed curve, and described closed curve is divided into δ within the scope of 360 °
0, β, γ and ε tetra-corners, δ
0the corresponding water suction curves of corner, the corresponding water delivery circular arc of β-bend, the corresponding discharged water curve of γ corner, ε corner correspondence sealing circular arc; Water suction curves and discharged water curve are sinusoidal curve, and water delivery radius of arc R-seals circular arc radius r=sinusoidal curve maximum lift h;
Sinusoidal curve radial displacement
H is sinusoidal curve maximum radial displacement amount, and δ is the corner δ of the variable turning angle that water suction curves or discharged water curve are corresponding, corresponding water suction curves
0equal with corresponding discharged water curve γ corner.
2. sea water pump with elastic body impeller according to claim 1, is characterized in that, each curve of work chamber's end face connects at the public cusp position kiss of respective corresponding corner; From housing the other end end view, rotate clockwise direction, at δ according to elastomer impeller
0in angle range, water suction curves upper end is kissed with sealing circular arc one end and is connect, along with corner constantly increases, water suction curves downward radial direction from the sinusoidal curve zero-bit of upper end increases gradually, until water suction curves lower extreme point rises to sinusoidal maximum lift h point position, water suction curves is kissed in h point position and water delivery circular arc one end and is connect; In γ angle range, discharged water curve lower end from sinusoidal curve maximum lift h point upwards radial direction reduce gradually, until when rising to sinusoidal curve null positions, discharged water curve upper end is kissed with the sealing circular curve the other end and is connect.
3. sea water pump with elastic body impeller according to claim 1, is characterized in that, the radius/water delivery radius of arc R of described elastomer impeller is 1.04 ~ 1.05.
4. sea water pump with elastic body impeller according to claim 1, is characterized in that, the least radius formed after the bending blade of elastomer impeller/sealing circular arc radius r is 0.94 ~ 0.95.
5. sea water pump with elastic body impeller according to claim 1, is characterized in that, described δ
0be 60 ° ± 5 ° with γ, described β is 90 ° ± 5 °, and described ε is 150 ° ± 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047878.6A CN103062120B (en) | 2013-02-07 | 2013-02-07 | Sea water pump with elastic body impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047878.6A CN103062120B (en) | 2013-02-07 | 2013-02-07 | Sea water pump with elastic body impeller |
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| Publication Number | Publication Date |
|---|---|
| CN103062120A CN103062120A (en) | 2013-04-24 |
| CN103062120B true CN103062120B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920352A (en) * | 1973-04-26 | 1975-11-18 | Speck Pumpen | Pump with plastic housing |
| EP1186782A1 (en) * | 2000-09-11 | 2002-03-13 | GARDENA Kress + Kastner GmbH | Submerisble pump |
| CN2641343Y (en) * | 2003-06-12 | 2004-09-15 | 梁钦宏 | Rubber vane type sea water pump driven by ship diesel engine |
| CN1920307A (en) * | 2005-08-25 | 2007-02-28 | 松下电工株式会社 | Pump and liquid supply apparatus having the pump |
| JP2007327451A (en) * | 2006-06-09 | 2007-12-20 | Ebara Corp | Self-priming pump |
| CN101684826A (en) * | 2008-09-22 | 2010-03-31 | 许义明 | Double-loop pump |
| CN201891652U (en) * | 2010-11-12 | 2011-07-06 | 苏州优德通力电气有限公司 | Rubber impeller pump |
| CN201982293U (en) * | 2011-02-22 | 2011-09-21 | 宁波市巨龙橡塑机电有限公司 | Impeller-type sea water pump with elastic rubber impeller |
| US8328535B2 (en) * | 2007-02-14 | 2012-12-11 | Borgwarner Inc. | Diffuser restraint system and method |
| CN203230626U (en) * | 2013-02-07 | 2013-10-09 | 江苏科技大学 | Elastomer impeller sea water pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8985490B2 (en) * | 2008-07-29 | 2015-03-24 | Vaughan Company, Inc. | Chopper pump with cutting inserts |
-
2013
- 2013-02-07 CN CN201310047878.6A patent/CN103062120B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920352A (en) * | 1973-04-26 | 1975-11-18 | Speck Pumpen | Pump with plastic housing |
| EP1186782A1 (en) * | 2000-09-11 | 2002-03-13 | GARDENA Kress + Kastner GmbH | Submerisble pump |
| CN2641343Y (en) * | 2003-06-12 | 2004-09-15 | 梁钦宏 | Rubber vane type sea water pump driven by ship diesel engine |
| CN1920307A (en) * | 2005-08-25 | 2007-02-28 | 松下电工株式会社 | Pump and liquid supply apparatus having the pump |
| JP2007327451A (en) * | 2006-06-09 | 2007-12-20 | Ebara Corp | Self-priming pump |
| US8328535B2 (en) * | 2007-02-14 | 2012-12-11 | Borgwarner Inc. | Diffuser restraint system and method |
| CN101684826A (en) * | 2008-09-22 | 2010-03-31 | 许义明 | Double-loop pump |
| CN201891652U (en) * | 2010-11-12 | 2011-07-06 | 苏州优德通力电气有限公司 | Rubber impeller pump |
| CN201982293U (en) * | 2011-02-22 | 2011-09-21 | 宁波市巨龙橡塑机电有限公司 | Impeller-type sea water pump with elastic rubber impeller |
| CN203230626U (en) * | 2013-02-07 | 2013-10-09 | 江苏科技大学 | Elastomer impeller sea water pump |
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| Publication number | Publication date |
|---|---|
| CN103062120A (en) | 2013-04-24 |
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Effective date of registration: 20171016 Address after: 212003 Zhenjiang City, Jiangsu province dream Creek Road, No. 2 Patentee after: Zhenjiang four ocean Diesel Engine Manufacturing Co., Ltd. Address before: 212003 Zhenjiang City, Jiangsu province dream Creek Road, No. 2 Patentee before: Jiangsu University of Science and Technology |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No.69 liumai Road, high tech Industrial Development Zone, Zhenjiang City, Jiangsu Province Patentee after: Zhenjiang Siyang Diesel Engine Manufacturing Co.,Ltd. Address before: 212003, No. 2, Mengxi Road, Zhenjiang, Jiangsu Patentee before: Zhenjiang Siyang Diesel Engine Manufacturing Co.,Ltd. |