CN103362769A - Metering pump with entire solid eccentric wheel travel adjustment mechanism - Google Patents

Metering pump with entire solid eccentric wheel travel adjustment mechanism Download PDF

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Publication number
CN103362769A
CN103362769A CN2012100908934A CN201210090893A CN103362769A CN 103362769 A CN103362769 A CN 103362769A CN 2012100908934 A CN2012100908934 A CN 2012100908934A CN 201210090893 A CN201210090893 A CN 201210090893A CN 103362769 A CN103362769 A CN 103362769A
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Prior art keywords
whole
eccentric
metering pump
rod
eccentric wheel
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CN2012100908934A
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CN103362769B (en
Inventor
周良
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DEPAMU (HANGZHOU) PUMP TECHNOLOGY Co Ltd
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DEPAMU (HANGZHOU) PUMP TECHNOLOGY Co Ltd
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Priority to CN201210090893.4A priority Critical patent/CN103362769B/en
Publication of CN103362769A publication Critical patent/CN103362769A/en
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Abstract

The invention discloses a metering pump with an entire solid eccentric wheel travel adjustment mechanism. The metering pump comprises an amount adjustment lead screw, a moving shaft, a hollow shaft, a connection rod, the entire eccentric wheel, a worm gear, a worm and a slide rod, wherein one end of the amount adjustment lead screw is connected with the moving shaft in a mode of coaxial relative motion, the moving shaft is sleeved in the hollow shaft, a chute is formed in the moving shaft, a slide block is arranged in the chute, the entire eccentric wheel is sleeved on the hollow shaft and fixed with the connection rod, the connection rod is connected with the slide rod, and the worm wheel is in cup joint to the hollow shaft and is meshed with the worm. The metering pump is large in bearing capacity, high in metering precision and long in service life.

Description

A kind of metering pump of whole throw of eccentric controlling mechanism
Technical field
The present invention relates to a kind of stroke control mechanism, particularly a kind of metering pump of whole throw of eccentric controlling mechanism.
Background technique
Metering pump is as a kind of reciprocating pump that can measure conveying liquid, and it mainly also has the characteristics of step-less adjustment flow except the characteristics with reciprocating pump.Metering pump partly is comprised of motor, transmission case, cylinder body etc., and transmission case comprises connecting rod cam mechanism, stroke control mechanism and reducing gear, and stroke control mechanism is the vitals that metering pump is realized the step-less adjustment flow.
Document number is the stroke control mechanism that the patent documentation of CN 1796786A has been put down in writing a kind of metering pump, comprise worm gear, worm screw, adjustable lever and eccentric wheel, described eccentric wheel connects connecting rod, has lining between connecting rod and the eccentric wheel, adjustable lever below and described adjustable lever be affixed-the L-type axle, offer skewed slot on the L-type axle, in the described skewed slot guide is installed, be inserted with latch in the guide.Described L-type outer shaft sleeve has axle sleeve, described axle sleeve is bearing in the pump body by bearing, the periphery symmetry of described axle sleeve is offered two grooves, one tool eccentric wheel jaggy is placed on the described axle sleeve by the groove on described breach and the described axle sleeve, and described latch passes groove and the described eccentric wheel on the described axle sleeve.With document number be that the patent documentation of CN 102261329A discloses a kind of stroke regulation mechanism for metering pump, this controlling mechanism comprises adjusting handle, hollow swivel nut, push rod shaft, worm gear, skewback, slide block, crank pin, revolving sleeve, connecting rod and the axis of guide, it is anterior that adjusting handle is connected to hollow swivel nut through bolt, the push rod shaft front portion is located in the hollow swivel nut, the rear portion is located in the worm gear, skewback is located at the afterbody of push rod shaft, slide block is located in the guiding groove of worm gear, this slide block and skewback are connected, crank pin is set on the slide block, this crank pin is connected with described revolving sleeve, and connecting rod is set in the outside of revolving sleeve, and the axis of guide and revolving sleeve are connected.
Stroke control mechanism complex structure of the prior art and easily because of the eccentric wear that rotates or axial float produces, hollow shaft carrying power is inadequate causes the large and defective such as fall short of working life of measuring accuracy fluctuation.
Summary of the invention
The object of the present invention is to provide a kind of metering pump bearing capacity that makes large, measuring accuracy is high, the throw of lever controlling mechanism of long service life.
The technology used in the present invention is in order to achieve the above object: a kind of metering pump of whole throw of eccentric controlling mechanism, comprise accent amount screw mandrel, shifting axle, hollow shaft, connecting rod, whole eccentric wheel, worm gear, worm screw, slide bar, one end of described accent amount screw mandrel can coaxially be connected in relative rotation with shifting axle, described shifting axle is inserted in the hollow shaft, have skewed slot on the described shifting axle, be provided with slide block in the skewed slot, be arranged with whole eccentric wheel on the described hollow shaft, described whole eccentric wheel and connecting rod are fixed, described connecting rod is connected with slide bar, be socketed with worm gear on the described hollow shaft, described worm gear and worm meshing.
Be provided with concurrently symmetrical little chute and large chute on the described hollow shaft, described little chute place offers the radial direction through hole of perforation; Described whole eccentric wheel is two layers of cascade frustum cone structure, have radially large slide opening on one deck ladder, two layers of ladder are provided with eccentric opening, described eccentric opening one outer is provided with radially little slide opening, described large slide opening and little slide opening connect, and described two layers of ladder side are provided with the slide block mounting hole that passes eccentric opening.
Slide block mounting hole, the radial direction through hole on the hollow shaft and the skewed slot on the shifting axle that described slide block passes on the whole eccentric wheel are located on the whole eccentric wheel.
Described accent amount screw mandrel passes behind round nut, locking plate, the angular contact bearing with the rotating end that is fixed on shifting axle of locking nut.
Has needle bearing between described whole eccentric wheel and connecting rod.
Described connecting rod and the needle bearing outside are provided with the connecting rod back-up ring.
Described connecting rod back-up ring opposite side is provided with thrust ball bearing.
Described hollow shaft two ends are provided with taper roller bearing.
Described accent amount screw mandrel is provided with adjusting handle.
The characteristics that the present invention has are
1. between accent amount screw mandrel and shifting axle angular contact ball bearing is housed, can improves the coaxality between them, improve the support situation of shifting axle, prevented because of the eccentric wear that rotates or axial float produces.
2. whole eccentric wheel processing technology is simple, and part is few, and large chute access section cross-section area strengthens, and has strengthened the bearing capacity of hollow shaft.
3. the connecting rod back-up ring is installed on the whole eccentric wheel, can radially move with whole eccentric wheel to reduce the connecting rod eccentric wear, and connecting rod back-up ring one side is equipped with thrust ball bearing, can reduce the axial impact force that worm gear and worm screw produce.
Greatly improved thus the metering pump bearing capacity large, measuring accuracy is high, long service life.
Description of drawings
Fig. 1 is the metering pump structural representation of the whole throw of eccentric controlling mechanism of the present invention.
Fig. 2 is whole eccentric structural representation in the metering pump of the whole throw of eccentric controlling mechanism of the present invention.
Fig. 3 is the structural representation of the metering pump hollow mandrel of the whole throw of eccentric controlling mechanism of the present invention.
Embodiment
Below in conjunction with Figure of description the present invention is made detailed description.
Slider bar travel controlling mechanism as shown in Figure 1, comprise accent amount screw mandrel 1, shifting axle 2, hollow shaft 3, connecting rod 5, whole eccentric wheel 7, worm gear 8, worm screw 9, slide bar 10, one end of described accent amount screw mandrel 1 can coaxially be connected in relative rotation with shifting axle 2, described shifting axle 2 is inserted in the hollow shaft 3, have skewed slot 2-1 on the described shifting axle 2, be provided with slide block 6 among the skewed slot 2-1, be arranged with whole eccentric wheel 7 on the described hollow shaft 3, described whole eccentric wheel 7 is fixing with connecting rod 5, described connecting rod 5 is connected with slide bar 10, be socketed with worm gear 8 on the described hollow shaft 3, described worm gear 8 and worm screw 9 engagements.
Described accent amount screw mandrel 1 passes round nut 14, locking plate 17, angular contact bearing 15 rear ends that are rotatably mounted to shifting axle 2 with locking nut 16.Setting can improve the coaxality between accent amount screw mandrel 1 and the shifting axle 2 like this, improves the support situation of shifting axle 2, has prevented because of the eccentric wear that rotates or axial float produces.
5 on described whole eccentric wheel 7 and connecting rod have needle bearing 12.
Described connecting rod 5 and needle bearing 12 outsides are provided with connecting rod back-up ring 4.
Described connecting rod back-up ring 4 opposite sides are provided with thrust ball bearing 13.
Described hollow shaft 3 two ends are provided with taper roller bearing 18 and taper roller bearing 19.
Connecting rod back-up ring 4 is installed on the whole eccentric wheel 7, can radially move with whole eccentric wheel 7 to reduce connecting rod 5 eccentric wears, and connecting rod back-up ring 4 one sides are equipped with thrust ball bearing 13, can reduce the axial impact force that worm gear 8 and worm screw 9 produce.
Described accent amount screw mandrel 1 is provided with adjusting handle 21.
Such as Fig. 2. and be provided with concurrently symmetrical little chute 3-3 and large chute 3-1 shown in the of 3 on the described hollow shaft 3, described little chute 3-2 place offers the warp-wise through hole 3-3 of perforation; Described whole eccentric wheel 7 is two layers of cascade frustum cone structure, have radially large slide opening 7-21 on one deck ladder 7-2, two layers of ladder 7-1 are provided with eccentric opening, described eccentric opening one outer is provided with radially little slide opening 7-11, described large slide opening 7-21 and little slide opening 7-11 connect, and described two layers of ladder side are provided with the slide block mounting hole 7-12 that passes eccentric opening.
Slide block mounting hole 7-12, the radial direction through hole 3-3 on the hollow shaft 3 and the skewed slot 2-1 on the shifting axle 2 that described slide block 6 passes on the whole eccentric wheel 7 are located on the whole eccentric wheel 7.Working principle is as follows:
Motor drives hollow shaft 3 and rotates by worm gear 8, worm screw 9, and the whole eccentric wheel 7 of simultaneously hollow shaft 3 drives, connecting rod 5, slide bar 10 are done linear reciprocating motion.When 1 axial motion of accent amount screw mandrel, shifting axle 2 also axially moves simultaneously, because slide block 6 and whole eccentric wheel 7 can not axially move, slide block moves radially, drives whole eccentric wheel 7 and can only do radial motion in the skewed slot of shifting axle 3, its throw of eccentric is changed, and the movement travel of slide bar 10 changes thereupon.

Claims (9)

1. the metering pump of a whole throw of eccentric controlling mechanism, it is characterized in that, this controlling mechanism comprises accent amount screw mandrel, shifting axle, hollow shaft, connecting rod, whole eccentric wheel, worm gear, worm screw, slide bar, one end of described accent amount screw mandrel can coaxially be connected in relative rotation with shifting axle, described shifting axle is inserted in the hollow shaft, have skewed slot on the described shifting axle, be provided with slide block in the skewed slot, be arranged with whole eccentric wheel on the described hollow shaft, described whole eccentric wheel and connecting rod are fixed, described connecting rod is connected with slide bar, is socketed with worm gear on the described hollow shaft, described worm gear and worm meshing.
2. the metering pump of whole throw of eccentric controlling mechanism as claimed in claim 1 is characterized in that, is provided with concurrently symmetrical little chute and large chute on the described hollow shaft, and described little chute place offers the radial direction through hole of perforation; Described whole eccentric wheel is two layers of cascade frustum cone structure, have radially large slide opening on one deck ladder, two layers of ladder are provided with eccentric opening, described eccentric opening one outer is provided with radially little slide opening, described large slide opening and little slide opening connect, and described two layers of ladder side are provided with the slide block mounting hole that passes eccentric opening.
3. the metering pump of whole throw of eccentric controlling mechanism as claimed in claim 2 is characterized in that, slide block mounting hole, the radial direction through hole on the hollow shaft and the skewed slot on the shifting axle that described slide block passes on the whole eccentric wheel are located on the whole eccentric wheel.
4. the metering pump of whole throw of eccentric controlling mechanism as claimed in claim 1 is characterized in that, described accent amount screw mandrel passes behind round nut, locking plate, the angular contact bearing with the rotating end that is fixed on shifting axle of locking nut.
5. the metering pump of whole throw of eccentric controlling mechanism as claimed in claim 1 is characterized in that, has needle bearing between described whole eccentric wheel and connecting rod.
6. the metering pump of whole throw of eccentric controlling mechanism as claimed in claim 5 is characterized in that, described connecting rod and the needle bearing outside are provided with the connecting rod back-up ring.
7. the metering pump of whole throw of eccentric controlling mechanism as claimed in claim 5 is characterized in that, described connecting rod back-up ring opposite side is provided with thrust ball bearing.
8. the metering pump of whole throw of eccentric controlling mechanism as claimed in claim 1 is characterized in that, described hollow shaft two ends are provided with taper roller bearing.
9. the metering pump of whole throw of eccentric controlling mechanism as claimed in claim 1 is characterized in that, described accent amount screw mandrel is provided with adjusting handle.
CN201210090893.4A 2012-03-26 2012-03-26 A kind of dosing pump of overall throw of eccentric governor motion Active CN103362769B (en)

Priority Applications (1)

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CN201210090893.4A CN103362769B (en) 2012-03-26 2012-03-26 A kind of dosing pump of overall throw of eccentric governor motion

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Application Number Priority Date Filing Date Title
CN201210090893.4A CN103362769B (en) 2012-03-26 2012-03-26 A kind of dosing pump of overall throw of eccentric governor motion

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CN103362769A true CN103362769A (en) 2013-10-23
CN103362769B CN103362769B (en) 2017-01-04

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696925A (en) * 2013-12-26 2014-04-02 中铁岩锋成都科技有限公司 Transmission mechanism used for realizing synchronous rotating, extending and contracting
CN104948429A (en) * 2015-06-10 2015-09-30 安庆联控机电科技发展有限公司 Improved honing liquid pump
CN104948431A (en) * 2015-06-10 2015-09-30 安庆联控机电科技发展有限公司 Honing solution pump with eccentric shaft sleeve
CN109869301A (en) * 2019-03-12 2019-06-11 葫芦岛高新泵业有限公司 A kind of dosing metering pump
CN110425129A (en) * 2019-06-21 2019-11-08 中国计量大学上虞高等研究院有限公司 A kind of low leakage double acting symmetrical expression fluid flow precision metering device
CN110762175A (en) * 2019-10-31 2020-02-07 万勇 Stroke adjustable device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974714A (en) * 1974-10-01 1976-08-17 Lewa Herbert Ott Kommanditgesellschaft Pump driving mechanism with adjustable stroke
CN2338505Y (en) * 1998-06-10 1999-09-15 常州市江南电力设备厂 Mechanical diaphragm type metering pump
CN1796786A (en) * 2004-12-28 2006-07-05 浙江工业大学 Stroke control mechanism of metering pump
CN201496220U (en) * 2009-09-29 2010-06-02 大连里瓦泵业有限公司 Adjustable eccentric structure of metering pump
CN201531385U (en) * 2009-09-17 2010-07-21 德帕姆(杭州)泵业科技有限公司 Measuring pump for sleeve type regulating mechanism
CN201696279U (en) * 2009-11-10 2011-01-05 德帕姆(杭州)泵业科技有限公司 Metering pump for eccentric stroke regulating mechanism
CN102261329A (en) * 2010-05-26 2011-11-30 上海工程技术大学 Stroke regulation mechanism for metering pump
CN202468194U (en) * 2012-03-26 2012-10-03 德帕姆(杭州)泵业科技有限公司 Metering pump of solid eccentric sheave stroke adjusting mechanism

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974714A (en) * 1974-10-01 1976-08-17 Lewa Herbert Ott Kommanditgesellschaft Pump driving mechanism with adjustable stroke
CN2338505Y (en) * 1998-06-10 1999-09-15 常州市江南电力设备厂 Mechanical diaphragm type metering pump
CN1796786A (en) * 2004-12-28 2006-07-05 浙江工业大学 Stroke control mechanism of metering pump
CN201531385U (en) * 2009-09-17 2010-07-21 德帕姆(杭州)泵业科技有限公司 Measuring pump for sleeve type regulating mechanism
CN201496220U (en) * 2009-09-29 2010-06-02 大连里瓦泵业有限公司 Adjustable eccentric structure of metering pump
CN201696279U (en) * 2009-11-10 2011-01-05 德帕姆(杭州)泵业科技有限公司 Metering pump for eccentric stroke regulating mechanism
CN102261329A (en) * 2010-05-26 2011-11-30 上海工程技术大学 Stroke regulation mechanism for metering pump
CN202468194U (en) * 2012-03-26 2012-10-03 德帕姆(杭州)泵业科技有限公司 Metering pump of solid eccentric sheave stroke adjusting mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696925A (en) * 2013-12-26 2014-04-02 中铁岩锋成都科技有限公司 Transmission mechanism used for realizing synchronous rotating, extending and contracting
CN103696925B (en) * 2013-12-26 2015-12-09 中铁岩锋成都科技有限公司 For realizing synchronous rotary and flexible driving mechanism
CN104948429A (en) * 2015-06-10 2015-09-30 安庆联控机电科技发展有限公司 Improved honing liquid pump
CN104948431A (en) * 2015-06-10 2015-09-30 安庆联控机电科技发展有限公司 Honing solution pump with eccentric shaft sleeve
CN109869301A (en) * 2019-03-12 2019-06-11 葫芦岛高新泵业有限公司 A kind of dosing metering pump
CN110425129A (en) * 2019-06-21 2019-11-08 中国计量大学上虞高等研究院有限公司 A kind of low leakage double acting symmetrical expression fluid flow precision metering device
CN110762175A (en) * 2019-10-31 2020-02-07 万勇 Stroke adjustable device

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Address after: 310018 Hangzhou City, Zhejiang Province Economic and Technological Development Zone No. 20, No. 658 Depam Street (Hangzhou) Pump Technology Co. Ltd.

Applicant after: Depamu (Hangzhou) Pump Technology Co., Ltd.

Address before: 310018, Zhejiang, Hangzhou economic and Technological Development Zone, No. 3, No. 3, 3 Avenue (Hangzhou) Pump Technology Co., Ltd., Hangzhou

Applicant before: Depamu (Hangzhou) Pump Technology Co., Ltd.

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