CN110469479A - Pump transmission device and delivery pump - Google Patents
Pump transmission device and delivery pump Download PDFInfo
- Publication number
- CN110469479A CN110469479A CN201910776068.1A CN201910776068A CN110469479A CN 110469479 A CN110469479 A CN 110469479A CN 201910776068 A CN201910776068 A CN 201910776068A CN 110469479 A CN110469479 A CN 110469479A
- Authority
- CN
- China
- Prior art keywords
- cam
- idler wheel
- transmission device
- pump
- imbibition
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 32
- 238000005213 imbibition Methods 0.000 claims description 31
- 230000021615 conjugation Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 20
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses pump transmission device and delivery pumps, wherein, pump transmission device includes shell, main shaft, conjugate cam group and gear frame, main axis is set on shell, conjugate cam group includes first cam and the second cam, and gear frame is slidably arranged on shell, and the first idler wheel and the second idler wheel on rear side of the first idler wheel are provided on gear frame, the side wall of first idler wheel abuts the side wall of the first cam, and the side wall of the second idler wheel abuts the side wall of the second cam.By the way that conjugate cam group is arranged, instead of spring return structure, it can reduce the backhaul fluctuation of gear frame, realize the low pulse of flow, improve the flow accuracy of liquid conveying.
Description
Technical field
The present invention relates to liquid conveying technology fields, in particular to pump transmission device and delivery pump.
Background technique
It is existing, it is usually that actuator and transmission dress are set for the liquid delivery pump using reciprocating driving structure
It sets to push diaphragm or plunger rod to move back and forth, to realize the conveying of liquid.Push piece and drive before transmission device generally includes
Push piece moves back the return structures of reset before dynamic, and return structures generally use the structures such as spring.However these return structures will cause
Delivery pump has biggish pulse, causes moment flowed fluctuation larger, it is difficult to adapt to some high-precision requirements and movement velocity
Very slow charging occasion.In addition, spring can have the case where deformation and coefficient of elasticity variation, this meeting in use for some time
The backhaul for influencing transmission device, increases the flow error of delivery pump.
Summary of the invention
It is an object of the invention at least solve one of the technical problems existing in the prior art, pump transmission device is provided
And delivery pump, it can be improved the flow accuracy of liquid conveying.
According to the first aspect of the invention, pump transmission device is provided comprising
Shell；
Main shaft is rotatably dispose on the shell；
N number of conjugate cam group, the conjugate cam group includes first cam and the second cam, first cam and described
Second cam is all set on the main shaft, N >=1；
Gear frame is slidably arranged on the shell, and the first idler wheel is provided on the gear frame and is located at described the
The second idler wheel on rear side of one idler wheel, the side wall of first idler wheel abut the side wall of first cam, second idler wheel
Side wall abuts the side wall of second cam.
The pump transmission device according to a first aspect of the present invention, first idler wheel, second idler wheel and institute
State the axis co-planar of main shaft three.
The pump transmission device, the gear frame include according to a first aspect of the present invention
Support is slideably positioned on the shell；
Rise bar is slideably positioned on the shell, and first idler wheel is provided on the rise bar；
Push back pin is arranged on the support, and second idler wheel is provided on the push back pin；
Connecting rod, the connecting rod connect the support and the rise bar simultaneously.
The pump transmission device according to a first aspect of the present invention is provided with guide bearing on the shell, described to push away
Journey bar is slideably positioned on the guide bearing.
The pump transmission device, the quantity of the conjugate cam group are set as N >=2 according to a first aspect of the present invention,
More than two conjugate cam groups are arranged successively along main shaft, and in two conjugate cam groups of arbitrary neighborhood, one of conjugation is convex
The phase angle difference of the first cam on the phase angle of the first cam in wheel group and another conjugate cam group is 360 °/N.
The pump transmission device, the quantity of the conjugate cam group are set as N=3 according to a first aspect of the present invention.
According to the second aspect of the invention, it provides in delivery pump, including liquid-absorbing block, plunger rod and such as claim 1 to 6
Pump transmission device described in any one claim, wherein
Imbibition channel is provided on the liquid-absorbing block, the quantity in the imbibition channel is identical as the conjugation quantity of cam set,
The imbibition channel includes the admission chamber being sequentially connected to, imbibition chamber and exhaust chamber；
The front sliding of the plunger rod is inserted in the imbibition chamber, and the rear portion of the plunger rod is connected with the gear frame
It connects.
The quantity of the delivery pump according to a second aspect of the present invention, the imbibition channel and the conjugate cam group is all provided with
It is set to two or more, the admission chamber on two imbibition channels of arbitrary neighborhood is connected by second channel.
The quantity of the delivery pump according to a second aspect of the present invention, the imbibition channel and the conjugate cam group is all provided with
It is set to two or more, the exhaust chamber on two imbibition channels of arbitrary neighborhood is connected by third channel.
Above scheme has at least one following technical effect: by the way that conjugate cam group is arranged, instead of spring return knot
Structure can reduce the backhaul fluctuation of gear frame, enable the movement constant speed of plunger rod, realizes the low pulse of flow, improves liquid
The flow accuracy of conveying；The operation of entire pump transmission device is more steady, reduces the generation of vibration and noise；Pump transmission dress
The occasion that can be adapted to main shaft high revolving speed and the slow-speed of revolution simultaneously is set, can adapt to the very slow charging occasion of some delivery rates.
Detailed description of the invention
The present invention is further explained with reference to the accompanying drawings and examples；
Fig. 1 is the structure chart of delivery pump embodiment；
Fig. 2 is the cross-sectional view of the liquid-absorbing block in delivery pump embodiment；
Fig. 3 is the structure chart of pump drive arrangement embodiment；
Fig. 4 is the structure chart of the gear frame in pump drive arrangement embodiment；
Fig. 5 is the structure chart of the main shaft and conjugate cam group in pump drive arrangement embodiment；
Fig. 6 is the right view of the main shaft and conjugate cam group in pump drive arrangement embodiment.
Specific embodiment
This part will be described in specific embodiments of the present invention, and the preferred embodiments of the invention is shown in the accompanying drawings, attached
The effect of figure be with figure remark additionally book word segment description, enable a person to intuitively, visually understand of the invention
Each technical characteristic and overall technical architecture, but it should not be understood as limiting the scope of the invention.
In the description of the present invention, it is to be understood that, be related to orientation description, for example, above and below, front, rear, left and right etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.
In the description of the present invention, several to be meant that one or more, it is multiple to be meant that two or more, be greater than,
Be less than, more than etc. be interpreted as not including this number, it is above, following, within etc. be interpreted as including this number.If there is being described to first,
Second is only intended to for the purpose of distinguishing technical characteristic, is not understood to indicate or imply relative importance or implicitly indicates institute
The quantity of the technical characteristic of instruction or the precedence relationship for implicitly indicating indicated technical characteristic.
In description of the invention, unless otherwise restricted clearly, the words such as setting, installation, connection be shall be understood in a broad sense, institute
Above-mentioned word in the present invention specific can rationally be determined with the particular content of combination technology scheme by belonging to technical field technical staff
Meaning.
Referring to Fig.1, delivery pump of the embodiment of the present invention comprising rotating member (attached to be not shown in the figure), liquid-absorbing block 10, plunger rod
20 and pump use transmission device.The structures such as motor, air motor can be used in rotating member.
Referring to Fig. 2, imbibition channel 11 is provided on liquid-absorbing block 10, imbibition channel 11 includes passing through first passage 114 sequentially
Admission chamber 111, imbibition chamber 112 and the exhaust chamber 113 of connection.The cross-sectional flow area of first passage 114 is less than imbibition chamber 112
Cross-sectional flow area.It is connected between the admission chamber 111 in adjacent imbibition channel 11 by second channel 115, second channel 115 leads to
Flow section product is less than the cross-sectional flow area of admission chamber 111.The exhaust chamber 113 in adjacent imbibition channel 11 passes through 116 phase of third channel
Connection, the cross-sectional flow area of third channel 116 are less than the cross-sectional flow area of exhaust chamber 113.
The front sliding of plunger rod 20 is inserted in imbibition chamber 112, and the rear portion of plunger rod 20 is connected with gear frame 60.
In addition, being also also turned on a cavity (attached to be not shown in the figure) between each exhaust chamber 113, which connects delivery pump
Total liquid outlet.The structures such as also mountable check valve or check-valves on delivery pump, to avoid the liquid for entering imbibition chamber 112
It flows back towards admission chamber 111, the liquid of discharge imbibition chamber 112 is avoided to flow back towards imbibition chamber 112.So that the conveying of liquid is more
Precisely.
Referring to Fig. 3 to Fig. 6, pump transmission device of the embodiment of the present invention comprising shell 30, main shaft 40, conjugate cam group
50 and gear frame 60, the quantity of conjugate cam group 50 is set as N=3, and the quantity in imbibition channel 11 and conjugation cam set 50
Quantity it is identical.Rotation hole is provided on shell 30, main shaft 40 is inserted in the rotation hole, so that main shaft 40 can be relative to shell
30 rotations, the end of main shaft 40 is connected with rotating member.Three conjugate cam groups 50 are sequentially arranged on main shaft 40, each conjugation
Cam set 50 includes the first cam 51 and the second cam 52, and the phase angle difference between the first cam 51 and the second cam 52 is
Corner corresponding to the lift of first cam 51.Gear frame 60 is slidably arranged on shell 30, is provided with first on gear frame 60
Idler wheel 71 and the second idler wheel 72 on rear side of the first idler wheel 71, the side wall of the first idler wheel 71 abut the side of the first cam 51
Wall, the side wall of the second idler wheel 72 abut the side wall of the second cam 52.
In two conjugate cam groups 50 of arbitrary neighborhood, the phase of the first cam 51 in one of conjugate cam group 50
The phase angle difference of the first cam 51 in parallactic angle and another conjugate cam group 50 is 120 °.The lift of each cam is identical, rises
Journey may be configured as 4mm to 500mm.Each cam can be loaded on main shaft 40 with discrete sets, i.e. cam and 40 separate machined of main shaft, then
It fits together.Certainly, cam can be also an integral structure with main shaft 40.
Specifically, being provided with guide bearing 31 and the first guide rail 32 on shell 30, gear frame 60 includes support 61, rise
Bar 62, push back pin 63 and connecting rod 64, support 61 are slideably positioned in the first guide rail 32 on shell 30, and the sliding of rise bar 62 is worn
In the guide bearing 31 on shell 30, the first idler wheel 71 above-mentioned is set on rise bar 62, and push back pin 63 is set to support 61
On, the second idler wheel 72 above-mentioned is set on push back pin 63.Connecting rod 64 while connecting support 61 and rise bar 62.
Preferably, the axis co-planar of the axis of the first idler wheel 71 and rise bar 62, the axis and push back pin of the second idler wheel 72
63 axis co-planar.
Preferably, the axis co-planar of 40 three of the first idler wheel 71, the second idler wheel 72 and main shaft, so that pump uses transmission device
Operation it is more steady, avoid generating longitudinal component.
Delivery pump at work, is rotated by rotating member driving spindle 40, can drive gear frame 60 using the second cam 52
It is moved back with plunger rod 20, to draw liquid into imbibition chamber 112, gear frame 60 and plunger rod 20 can be driven using the first cam 51
Thus Forward can realize the conveying of liquid so that imbibition chamber 112 is discharged in liquid.
By the way that conjugate cam group 50 is arranged, instead of spring return structure, it can reduce the backhaul fluctuation of gear frame 60, make
Plunger rod 20 movement can constant speed, realize the low pulse of flow, improve the flow accuracy of liquid conveying.And entire pump transmission
The operation of device is more steady, reduces the generation of vibration and noise.
By three conjugate cam groups 50, it can be achieved that each gear frame 60 and each plunger rod 20 successively move back and forth, can subtract
The flowed fluctuation of few liquid, improves the flow accuracy of liquid conveying.It is each to inhale by setting second channel 115 and third channel 116
Flow equilibrium compensation can be carried out between liquid channel 11, to be further reduced the flowed fluctuation of liquid, improve the stream of liquid conveying
Accuracy of measurement.
The reciprocating movement speed of gear frame 60 and plunger rod 20 depends on the velocity of rotation of main shaft 40, therefore, of the invention
Pump had both been applicable to the high-revolving occasion of main shaft 40 with transmission device, the occasion of 40 slow-speed of revolution of main shaft was also applicable to, various
The occasion of revolving speed, gear frame 60 and plunger rod 20 can even running, with ensure liquid conveying flow accuracy.Above-mentioned pump is used
The environment that transmission device can be suitable for per stroke all constant in a flash uses, and equipment life is long, exempts cumbersome maintenance.
In some embodiments, the quantity of conjugate cam group 50 may be configured as N=2, and in two conjugate cam groups 50
The phase angle difference of one cam 51 is 180 °.
Certainly, in some embodiments, the quantity of conjugate cam group 50 may be configured as N >=4.
In some embodiments, for gear frame 60, the second guide rail can be set on shell 30, connecting rod 64 is slideably positioned in
On second guide rail, support 61 can not be connected with shell 30.Or it is not provided with support 61, by 63 company of being directly arranged at of push back pin
On bar 64.
In the above-described embodiments, the phase angle of cam is connected the centre of gyration of nose and cam referring to Fig. 6
Line, the angle between the line and cam circumferential direction benchmark in the counterclockwise direction are the phase angle of the cam.The week of each cam
It is all made of to benchmark relative to position same on main shaft 40, for example, when each cam above-mentioned is all made of discrete sets loaded on main shaft
When structure on 40, the circumferential benchmark of cam can be used the key slot center of the second cam 52 in rightmost side conjugate cam group 50 with
The line of its centre of gyration.
Certainly, for the phase angle of cam, angle in the clockwise direction also can be used.
For the pump transmission device of above structure, can be applied to plunger pump, round-trip pump, constant flow pump, constant displacement pump and
Metering pump etc..
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to the above embodiments, In
The technical field those of ordinary skill within the scope of knowledge, can also make without departing from the purpose of the present invention
Various change out.
Claims (9)
1. pump transmission device characterized by comprising
Shell；
Main shaft is rotatably dispose on the shell；
N number of conjugate cam group, the conjugate cam group includes first cam and the second cam, first cam and described second
Cam is all set on the main shaft, N >=1；
Gear frame is slidably arranged on the shell, and the first idler wheel is provided on the gear frame and is located at first rolling
The second idler wheel of rear side is taken turns, the side wall of first idler wheel abuts the side wall of first cam, the side wall of second idler wheel
Abut the side wall of second cam.
2. it is according to claim 1 pump use transmission device, which is characterized in that first idler wheel, second idler wheel with
And the axis co-planar of the main shaft three.
3. pump transmission device according to claim 1, which is characterized in that the gear frame includes
Support is slideably positioned on the shell；
Rise bar is slideably positioned on the shell, and first idler wheel is provided on the rise bar；
Push back pin is arranged on the support, and second idler wheel is provided on the push back pin；
Connecting rod, the connecting rod connect the support and the rise bar simultaneously.
4. pump transmission device according to claim 3, which is characterized in that be provided with guide bearing, institute on the shell
Rise bar is stated to be slideably positioned on the guide bearing.
5. pump transmission device according to claim 1, which is characterized in that the quantity of the conjugate cam group is set as N
>=2, more than two conjugate cam groups are arranged successively along main shaft, and in two conjugate cam groups of arbitrary neighborhood, one of them is total
The phase angle difference of the first cam in the phase angle of the first cam in yoke cam set and another conjugate cam group is 360 °/
N。
6. pump transmission device according to claim 5, which is characterized in that the quantity of the conjugate cam group is set as N
=3.
7. delivery pump, which is characterized in that including liquid-absorbing block, plunger rod and such as any one of claims 1 to 6 claim institute
The pump transmission device stated, wherein
Imbibition channel is provided on the liquid-absorbing block, the quantity in the imbibition channel is identical as the conjugation quantity of cam set, described
Imbibition channel includes the admission chamber being sequentially connected to, imbibition chamber and exhaust chamber；
The front sliding of the plunger rod is inserted in the imbibition chamber, and the rear portion of the plunger rod is connected with the gear frame.
8. delivery pump according to claim 7, which is characterized in that the quantity in the imbibition channel and the conjugate cam group
It is disposed as two or more, the admission chamber on two imbibition channels of arbitrary neighborhood is connected by second channel.
9. delivery pump according to claim 7 or 8, which is characterized in that the imbibition channel and the conjugate cam group
Quantity is disposed as two or more, and the exhaust chamber on two imbibition channels of arbitrary neighborhood is connected by third channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776068.1A CN110469479A (en) | 2019-08-21 | 2019-08-21 | Pump transmission device and delivery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776068.1A CN110469479A (en) | 2019-08-21 | 2019-08-21 | Pump transmission device and delivery pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110469479A true CN110469479A (en) | 2019-11-19 |
Family
ID=68512790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910776068.1A Pending CN110469479A (en) | 2019-08-21 | 2019-08-21 | Pump transmission device and delivery pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110469479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118008746A (en) * | 2024-04-08 | 2024-05-10 | 广东迈坎智能装备有限公司 | Steady flow pump |
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| GB809456A (en) * | 1954-06-18 | 1959-02-25 | Separation L Emulsion Et Le Me | Improvements in piston pumps |
| CN2302355Y (en) * | 1997-03-18 | 1998-12-30 | 林仲文 | Oil well water injection pump head |
| CN2835567Y (en) * | 2005-08-30 | 2006-11-08 | 邓祥明 | Engine valve train without valve spring |
| CN201696457U (en) * | 2010-06-14 | 2011-01-05 | 晋江市龙湖永力机械有限公司 | High-speed conjugate cam mechanism |
| CN102022301A (en) * | 2010-11-26 | 2011-04-20 | 大连依利特分析仪器有限公司 | Three-cam shaft for large-flow high-pressure constant flow pump |
| CN102052275A (en) * | 2009-10-30 | 2011-05-11 | 北京普析通用仪器有限责任公司 | Parallel liquid phase chromatographic pump |
| US20110247449A1 (en) * | 2010-04-13 | 2011-10-13 | Dennis Parker | Cam Mechanism for Converting Constant Velocity Rotary Motion into a Constant Velocity Reciprocating Motion |
| US20120063925A1 (en) * | 2010-09-12 | 2012-03-15 | Dennis Parker | Metering Pump |
| CN103016937A (en) * | 2012-12-25 | 2013-04-03 | 中国矿业大学 | Multi-actuating travel and return travel irregularly-shaped wheel lubricating grease delivery device |
| CN103104432A (en) * | 2013-02-28 | 2013-05-15 | 上海舜宇恒平科学仪器有限公司 | Liquid chromatograph constant flow pump |
| CN107461328A (en) * | 2017-09-07 | 2017-12-12 | 德帕姆(杭州)泵业科技有限公司 | Three-plunger reciprocating Pumpp |
| CN107701384A (en) * | 2017-11-17 | 2018-02-16 | 德帕姆(杭州)泵业科技有限公司 | Three piston type reciprocating pumps |
| CN109458326A (en) * | 2019-01-04 | 2019-03-12 | 宁波合力机泵股份有限公司 | A kind of double acting fluid end of the horizontal valve group of reciprocating pump |
| CN210623000U (en) * | 2019-08-21 | 2020-05-26 | 中山致安化工科技有限公司 | Pump transmission and delivery pump |
-
2019
- 2019-08-21 CN CN201910776068.1A patent/CN110469479A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB809456A (en) * | 1954-06-18 | 1959-02-25 | Separation L Emulsion Et Le Me | Improvements in piston pumps |
| CN2302355Y (en) * | 1997-03-18 | 1998-12-30 | 林仲文 | Oil well water injection pump head |
| CN2835567Y (en) * | 2005-08-30 | 2006-11-08 | 邓祥明 | Engine valve train without valve spring |
| CN102052275A (en) * | 2009-10-30 | 2011-05-11 | 北京普析通用仪器有限责任公司 | Parallel liquid phase chromatographic pump |
| US20110247449A1 (en) * | 2010-04-13 | 2011-10-13 | Dennis Parker | Cam Mechanism for Converting Constant Velocity Rotary Motion into a Constant Velocity Reciprocating Motion |
| CN201696457U (en) * | 2010-06-14 | 2011-01-05 | 晋江市龙湖永力机械有限公司 | High-speed conjugate cam mechanism |
| US20120063925A1 (en) * | 2010-09-12 | 2012-03-15 | Dennis Parker | Metering Pump |
| CN102022301A (en) * | 2010-11-26 | 2011-04-20 | 大连依利特分析仪器有限公司 | Three-cam shaft for large-flow high-pressure constant flow pump |
| CN103016937A (en) * | 2012-12-25 | 2013-04-03 | 中国矿业大学 | Multi-actuating travel and return travel irregularly-shaped wheel lubricating grease delivery device |
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| CN107461328A (en) * | 2017-09-07 | 2017-12-12 | 德帕姆(杭州)泵业科技有限公司 | Three-plunger reciprocating Pumpp |
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| CN109458326A (en) * | 2019-01-04 | 2019-03-12 | 宁波合力机泵股份有限公司 | A kind of double acting fluid end of the horizontal valve group of reciprocating pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118008746A (en) * | 2024-04-08 | 2024-05-10 | 广东迈坎智能装备有限公司 | Steady flow pump |
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