CN110131123A - A kind of Pulseless metering pump - Google Patents
A kind of Pulseless metering pump Download PDFInfo
- Publication number
- CN110131123A CN110131123A CN201910520233.7A CN201910520233A CN110131123A CN 110131123 A CN110131123 A CN 110131123A CN 201910520233 A CN201910520233 A CN 201910520233A CN 110131123 A CN110131123 A CN 110131123A
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- China
- Prior art keywords
- pump head
- pump
- metering pump
- box assembly
- liquid outlet
- Prior art date
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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
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
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- 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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
A kind of Pulseless metering pump, it includes brushless motor, pump head and transmission box assembly, brushless motor is connect with transmission case Component driver, pump head setting is on transmission box assembly, the quantity of pump head is N number of, it is integer that N, which is more than or equal to 3 and N, each pump head is planar uniformly distributed centered on being driven box assembly, successively to work along time interval Φ=360 °/N phase difference between adjacent pump head, and air damper corresponding thereto is provided on the liquid outlet pipeline of each pump head, the inlet pipeline of each pump head is connected with total inlet main pipe, the liquid outlet pipeline of each pump head is connected with total liquid outlet main pipe.The present apparatus forms hub-and-spoke configuration using at least three pump head, and between adjacent pump head along time shaft with certain phase difference successively cooperating, to reduce most of pulsation of device, in addition one air damper of setting is respectively corresponded in each pump head, remaining pulsation is sponged, to realize the metering pump of pulse free.
Description
Technical field
The present invention relates to metering pump fields.
Background technique
Metering pump (Metering pump) is also referred to as constant displacement pump or proportioning pump, and the flow of metering pump can be in 0-100% range
Interior step-less adjustment is for conveying a kind of special positive displacement pump of liquid (especially corrosive liquids).Metering pump is fluid conveyer
One kind of tool, outstanding feature are can to keep the constant flow rate unrelated with discharge pressure, can be completed at the same time using metering pump
Conveying, metering and the function of adjusting, to simplify the technological process of production.It, can be by several media by standard using more metering pumps
It is mixed in true ratio input process flow, due to the protrusion of its own, nowadays metering pump has been widely used in petroleum
In each industrial circle such as chemical industry, pharmacy, food.
Current metering pump uniformly belongs to reciprocating pump scope, and since the plunger of pump is reciprocating, input medium will necessarily be produced
Raw such pulsation of pulsing may bring adverse effect to chemical reaction in process flow, while also can be because water hammer effect is to process pipe
Road generates impact and noisiness.As by the way of installing accumulator on outlet conduit, can only eliminated part pulsation, still can not yet
Meet to the elimination demanding application of pulsation phenomenon.
Prior art discloses a kind of flux adjustable high precision diaphragm metering pump without pulsation (application number:
200720038531.5), which is made of motor, transmission case body and 5 pump heads；It is mainly characterized by transmission case body
One end is uniformly distributed 5 pump heads, and the inlet of 5 pump heads is connected with 1 total inlet main pipe, and the liquid outlet of 5 pump heads is equal
It is connected with 1 total liquid outlet main pipe；The intracorporal running part of transmission case passes through bearing essence using single eccentric wheel and single connecting rod structure
Close fit connection, by the sliding between traditional cam link rub sassafras movement be changed to roll rub sassafras movement, 5 cylinders can be driven simultaneously
Intracorporal diaphragm, which is successively made to draw, to be inhaled and tension and compression campaign；The metering pump realizes the function of pulse free, ensure that the accuracy of metering pump,
Substantially increase the control precision and quality of technical process.But the device applies 5 pump heads, its structure is complicated, device event
Barrier rate is high.
It, should be every prior art discloses a kind of diaphragm metering pump pulsation damper (application number: 201820165281.X)
Film metering pump pulsation damper is installed on transfer pipeline, and at diaphragm metering pump outlet end, including tube body, the pipe
The both ends of body are respectively fixedly connected with the pipe cap to match with the tube body, and the tube body and pipe cap surround buffer chamber；One
The connector for connecting the transfer pipeline is connected on the pipe cap, the connector is hollow structure so that the buffering
It is connected inside chamber and the transfer pipeline.
By the additional installation of the diaphragm metering pump pulsation damper on transfer pipeline, but in practical application, it can only
The pulsation for eliminating part, can not be such that the pulsation of metering pump completely eliminates.
Summary of the invention
Shortcoming present in view of the above technology, the object of the present invention is to provide a kind of Pulseless metering pump, the dresses
It sets and forms hub-and-spoke configuration using at least three pump head, and work is cooperated successively with certain phase difference along time shaft between adjacent pump head
Make, to reduce most of pulsation of device, in addition one air damper of setting is respectively corresponded in each pump head, by remaining
Pulsation sponges, to realize the metering pump of pulse free, and the apparatus structure is simple, using effect is good, practical.
To achieve the above object, the present invention is implemented as follows:
A kind of Pulseless metering pump comprising brushless motor, pump head and transmission box assembly, the brushless motor and transmission case
Component driver connection, pump head setting is on transmission box assembly, it is characterised in that the quantity of the pump head be it is N number of, N is greater than etc.
It is integer in 3 and N, each pump head is planar uniformly distributed centered on being driven box assembly, along the time between adjacent pump head
Interval Φ=360 °/N phase difference successively works, and sky corresponding thereto is provided on the liquid outlet pipeline of each pump head
Gas damper, the inlet pipeline of each pump head are connected with total inlet main pipe, the liquid outlet pipeline of each pump head with
Total liquid outlet main pipe is connected.It is successively worked using more pump heads (N >=3) with certain phase difference, reduces metering pump and working
When most of pulsation for generating, along with each pump head is provided with air damper corresponding thereto, utilize air damping
Device absorbs remaining pulsation, so that the metering pump of the application be made to reach pulse free purpose.The brushless motor is the prior art,
In, the uninterrupted of metering pump can be adjusted by existing brushless motor controller, such as adjusted the speed by built-in-potential device, is outer
The speed regulation of portion's analog voltage, the speed regulation of bulk potential device, PWM speed regulation and pulse frequency speed regulation.
Further, when the quantity of the pump head is 3, the angle between each adjacent pump head is 120 °, and 3 pump heads with
120 degree of phase differences successively work.When the pump head of metering pump is set as 3, for the embodiment optimized, the structure of metering pump
Design relatively easy, when pump head is set as 4 or more, structure can be relatively more complicated, and the reduction effect base of its pulsation
Too big variation is had no with the reduction effect of 3 pump heads in sheet.Specifically, when being set as 4 pump heads, the angle of adjacent pump head
It is 90 °, and 4 pump heads are along 90 degree of phase differences of time shaft successively cooperating；When being set as 5 pump heads, the folder of adjacent pump head
Angle is 72 °, and 5 pump heads are along 72 degree of phases of time shaft successively cooperating.
Further, the air damper includes shell and upper cover, and the shell is funnel-shaped, the bottom end of shell and pump head
Liquid outlet pipeline be connected, the upper cover lid closes on the top of shell.The air damper and liquid outlet pipeline enclose shape
At a closed cavity, air is filled in air damper, an acting in opposition is provided to the liquid in liquid outlet pipeline
Power eliminates other pulsation, exports liquid steadily.
Further, the transmission box assembly includes cabinet, eccentric shaft and deep groove ball bearing, and the deep groove ball bearing is socketed in
On eccentric shaft, the eccentric shaft and deep groove ball bearing are arranged at the center of cabinet, the outer circle and pump head of the deep groove ball bearing
It is flexibly connected.Using the characteristic of eccentric shaft, when the brushless motor drives eccentric shaft turns, the eccentric shaft and deep groove ball bearing
Reciprocal push successively is carried out to each pump head to operate, and then controls feed liquor and the drain of pump head.
Further, the cabinet is in hub-and-spoke configuration, and the cabinet is adapted with pump head.
Further, each pump head includes pump case, diaphragm, pusher unit, entrance valve ball and exports valve ball, the diaphragm,
Pusher unit, entrance valve ball and outlet valve ball are arranged in pump case, and the entrance valve ball and outlet valve ball are separately positioned on pump
At the inlet and liquid outlet of shell, one end of the pusher unit is flexibly connected with transmission box assembly, the pusher unit it is another
One end is connected with diaphragm.Using the reciprocating motion of pusher unit control diaphragm to move forward and backward, and then control entrance valve ball
It with the closure or openness of outlet valve ball, realizes the feed liquor of pump head, go out liquid operation, i.e., when diaphragm retreats, gradually formed in pump head
Vacuum, entrance valve ball are opened, and liquid is sucked；When diaphragm advances, entrance valve ball is closed at this time, and outlet valve ball is opened, liquid row
Out.
Further, the pusher unit includes push rod, spring and ram seat, and the spring is socketed on push rod, described to push away
One end of bar is flexibly connected with transmission case, and the other end of the push rod is socketed in ram seat, and the ram seat is connected with diaphragm
It connects.When eccentric shaft and deep groove ball bearing work, the outer circle of deep groove ball bearing acts on push rod, and push rod is driven back and forth to be transported
It is dynamic, and then the diaphragm of the push rod other end is driven to advance or retreat.
Further, the metering pump further includes pedestal, and the pedestal includes substrate and a plurality of A-frames, each triangle
The lower end of bracket is connected with substrate, and the upper end of each A-frame is connected and forms a supporting plane, the transmission case
Component is fixed on supporting plane.
Further, offer triangular groove in each A-frame, the inlet pipeline of each pump head pass through triangular groove with
Its corresponding pump head is connected.
Further, pump head liquid outlet pipeline corresponding thereto and inlet pipeline pass through heavy three-chip type clip
It is connected.Using clamp connection, sealing effect is good and can quickly mount and dismount to the pipeline of metering pump.
Present invention has an advantage that the present apparatus using at least three pump head form hub-and-spoke configuration, and between adjacent pump head along when
Between axis with certain phase difference successively cooperating, to reduce most of pulsation of device, in addition distinguish in each pump head
It is correspondingly arranged an air damper, remaining pulsation is sponged, to realize the metering pump of pulse free, and apparatus structure letter
Single, using effect is good, practical.
Detailed description of the invention
The structural schematic diagram for the Pulseless metering pump that Fig. 1 is implemented for the present invention.
The top view for the Pulseless metering pump that Fig. 2 is implemented for the present invention.
The Structure explosion diagram for the Pulseless metering pump that Fig. 3 is implemented for the present invention.
Fig. 4 by the present invention the structural schematic diagram of pedestal in implementation Pulseless metering pump.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1-4 show a kind of Pulseless metering pump that the present invention is realized, which mainly includes nothing
Brush motor 1, pump head 2 and transmission box assembly 3, brushless motor 1 and transmission box assembly 3 are drivingly connected, and pump head 2 is arranged in transmission case group
On part 3, it is characterised in that the quantity of pump head 2 be it is N number of, it is integer that N, which is more than or equal to 3 and N, and each pump head 2 is to be driven box assembly 3
Center is planar uniformly distributed, successively to work along time interval Φ=360 °/N phase difference between adjacent pump head 2, each
The inlet pipeline 4 of pump head 2 is connected with total inlet main pipe 41, the liquid outlet pipeline 5 of each pump head 2 with total liquid outlet
Main pipe 51 is connected, and air damper 6 corresponding thereto is provided on the liquid outlet pipeline 5 of each pump head 2.Using more
Pump head 2 (N >=3) successively worked with certain phase difference, it reduces the major part that metering pump generates at work and pulses, then plus
Upper each pump head 2 is provided with air damper 6 corresponding thereto, absorbs remaining pulsation using air damper 6, thus
The metering pump of the application is set to reach pulse free purpose.Brushless motor 1 is the prior art, wherein the uninterrupted of metering pump can be with
It is adjusted by existing brushless motor controller, such as passes through the speed regulation of built-in-potential device, external analog voltages speed regulation, bulk potential
Device speed regulation, PWM speed regulation and pulse frequency speed regulation.
In the present embodiment, when the quantity of pump head 2 is 3, the angle between each adjacent pump head 2 is 120 °, and 3 pumps
Head is successively worked with 120 degree of phase differences.
In the present embodiment, air damper 6 includes shell 61 and upper cover 62, and shell 61 is funnel-shaped, the bottom of shell 61
End is connected with the liquid outlet pipeline 5 of pump head 2, and the lid of upper cover 62 closes on the top of shell 61.Air damper 6 and liquid outlet pipeline
5 are enclosed a closed cavity, fill air in air damper 6, provide one to the liquid in liquid outlet pipeline 5
Opposition eliminates other pulsation, exports liquid steadily.
In the present embodiment, transmission box assembly 3 includes cabinet 31, eccentric shaft 32 and deep groove ball bearing 33, deep groove ball bearing
33 are socketed on eccentric shaft 32, and eccentric shaft 32 and deep groove ball bearing 33 are arranged at the center of cabinet 31, deep groove ball bearing 33
Outer circle is flexibly connected with pump head 2.Utilize the characteristic of eccentric shaft 32, when brushless motor 1 drives eccentric shaft 32 to rotate, 32 He of eccentric shaft
Deep groove ball bearing 33 successively carries out each pump head 2 back and forth to push operation, and then controls feed liquor and the drain of pump head 2.
In the present embodiment, cabinet 31 is in hub-and-spoke configuration, and cabinet 31 is adapted with pump head 2.
In the present embodiment, each pump head 2 includes pump case 21, diaphragm 22, pusher unit 23, entrance valve ball 24 and outlet
Valve ball 25, diaphragm 22, pusher unit 23, entrance valve ball 24 and outlet valve ball 25 are arranged in pump case 21,24 He of entrance valve ball
Outlet valve ball 25 is separately positioned at the inlet and liquid outlet of pump case 21, and one end of pusher unit 23 and transmission box assembly 3 are living
Dynamic connection, the other end of pusher unit 23 are connected with diaphragm 22.Moving forward and backward for diaphragm 22 is controlled using pusher unit 23
Reciprocating motion, and then control entrance valve ball 24 and export valve ball 25 closure or openness, realize pump head 2 feed liquor, go out liquid behaviour
Make, i.e., when diaphragm 22 retreats, vacuum is gradually formed in pump head 2, entrance valve ball 24 is opened, and liquid is sucked；When diaphragm 22 advances
When, entrance valve ball 24 is closed at this time, and outlet valve ball 25 is opened, liquid discharge.
In the present embodiment, pusher unit 23 includes push rod 231, spring 232 and ram seat 233, and spring 232, which is socketed in, to be pushed away
On bar 231, one end of push rod 231 is flexibly connected with transmission case 3, and the other end of push rod 231 is socketed in ram seat 233, push rod
Seat 233 is connected with diaphragm 22.When eccentric shaft 32 and deep groove ball bearing 33 work, the outer circle of deep groove ball bearing 33 is to push rod
231 effects, drive push rod 231 to move back and forth, and then the diaphragm 22 of 231 other end of push rod is driven to advance or retreat.
In the present embodiment, metering pump further includes pedestal 7, and pedestal 7 includes substrate 71 and a plurality of A-frames 72, each
The lower end of A-frame 72 is connected with substrate 71, and the upper end of each A-frame 72 is connected and forms a supporting plane
73, transmission box assembly 3 is fixed on supporting plane 73.
In the present embodiment, triangular groove 74, the inlet pipeline 4 of each pump head 2 are offered in each A-frame 72
It is connected across the pump head 2 of triangular groove 74 corresponding thereto.
In the present embodiment, the liquid outlet pipeline 5 corresponding thereto of pump head 2 and inlet pipeline 4 pass through heavy three pieces
Formula clip 8 is connected.Using clamp connection, sealing effect is good and can quickly mount and dismount to the pipeline of metering pump.
When the pump head 2 of metering pump is set as 3, the structure design for the embodiment optimized, metering pump is relatively simple
Single, when pump head is set as 4 or more, structure can be relatively more complicated, and the reduction effect of its pulsation is substantially pumped with 3
The reduction effect of head has no too big variation.Specifically, the angle of adjacent pump head is 90 °, and 4 when being set as 4 pump heads
Pump head is along 90 degree of phase differences of time shaft successively cooperating；When being set as 5 pump heads, the angle of adjacent pump head is 72 °, and 5
A pump head is along 72 degree of phases of time shaft successively cooperating.
Present invention has an advantage that the present apparatus using at least three pump head form hub-and-spoke configuration, and between adjacent pump head along when
Between axis with certain phase difference successively cooperating, to reduce most of pulsation of device, in addition distinguish in each pump head
It is correspondingly arranged an air damper, remaining pulsation is sponged, to realize the metering pump of pulse free, and apparatus structure letter
Single, using effect is good, practical.
It is above the preferred embodiment of the invention, but the present invention is not limited to this, any those skilled in the art
Member can think of variation should all fall into protection scope of the present invention.
Claims (10)
1. a kind of Pulseless metering pump comprising brushless motor, pump head and transmission box assembly, the brushless motor and transmission case group
Part is drivingly connected, and pump head setting is on transmission box assembly, it is characterised in that the quantity of the pump head be it is N number of, N is more than or equal to
3 and N is integer, and each pump head is planar uniformly distributed centered on being driven box assembly, between adjacent pump head between the time
It successively works every Φ=360 °/N phase difference, and is provided with air corresponding thereto on the liquid outlet pipeline of each pump head
Damper, the inlet pipeline of each pump head are connected with total inlet main pipe, and the liquid outlet pipeline of each pump head is and always
Liquid outlet main pipe is connected.
2. a kind of Pulseless metering pump according to claim 1, it is characterised in that when the quantity of the pump head is 3, often
Angle between a adjacent pump head is 120 °, and 3 pump heads are successively worked with 120 degree of phase differences.
3. a kind of Pulseless metering pump according to claim 1, it is characterised in that the air damper include shell and
Upper cover, the shell is funnel-shaped, and the bottom end of shell is connected with the liquid outlet pipeline of pump head, and the upper cover lid is closed in shell
Top.
4. a kind of Pulseless metering pump according to claim 1, it is characterised in that the transmission box assembly include cabinet, partially
Mandrel and deep groove ball bearing, the deep groove ball bearing are socketed on eccentric shaft, and the eccentric shaft and deep groove ball bearing are arranged at
The outer circle at the center of cabinet, the deep groove ball bearing is flexibly connected with pump head.
5. a kind of Pulseless metering pump according to claim 4, it is characterised in that the cabinet is in hub-and-spoke configuration, the case
Body is adapted with pump head.
6. a kind of Pulseless metering pump according to claim 1, it is characterised in that each pump head include pump case, diaphragm,
Pusher unit, entrance valve ball and outlet valve ball, the diaphragm, pusher unit, entrance valve ball and outlet valve ball are arranged at pump case
Interior, the entrance valve ball and outlet valve ball are separately positioned at the inlet and liquid outlet of pump case, one end of the pusher unit
It is flexibly connected with transmission box assembly, the other end of the pusher unit is connected with diaphragm.
7. a kind of Pulseless metering pump according to claim 6, it is characterised in that the pusher unit includes push rod, spring
And ram seat, the spring are socketed on push rod, one end of the push rod is flexibly connected with transmission case, the other end of the push rod
It is socketed in ram seat, the ram seat is connected with diaphragm.
8. a kind of Pulseless metering pump according to claim 1, it is characterised in that the metering pump further includes pedestal, described
Pedestal includes substrate and a plurality of A-frames, and the lower end of each A-frame is connected with substrate, each A-frame it is upper
End is connected and forms a supporting plane, and the transmission box assembly is fixed on supporting plane.
9. a kind of Pulseless metering pump according to claim 8, it is characterised in that offer three in each A-frame
Chamfered groove, the inlet pipeline of each pump head pass through the pump head of triangular groove corresponding thereto and are connected.
10. a kind of Pulseless metering pump according to claim 1, it is characterised in that the liquid out of the pump head corresponding thereto
Mouth pipeline passes through heavy three-chip type clip with inlet pipeline and is connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910520233.7A CN110131123A (en) | 2019-06-17 | 2019-06-17 | A kind of Pulseless metering pump |
| PCT/CN2019/110791 WO2020252991A1 (en) | 2019-06-17 | 2019-10-12 | Pulsation-free metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910520233.7A CN110131123A (en) | 2019-06-17 | 2019-06-17 | A kind of Pulseless metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110131123A true CN110131123A (en) | 2019-08-16 |
Family
ID=67577404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910520233.7A Pending CN110131123A (en) | 2019-06-17 | 2019-06-17 | A kind of Pulseless metering pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110131123A (en) |
| WO (1) | WO2020252991A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020252991A1 (en) * | 2019-06-17 | 2020-12-24 | 深圳市协鸿环保设备有限公司 | Pulsation-free metering pump |
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| CN202883326U (en) * | 2012-09-21 | 2013-04-17 | 马鞍山市桓泰环保设备有限公司 | Novel three-pump-head mechanical drive diaphragm metering pump |
| CN105050731A (en) * | 2013-03-15 | 2015-11-11 | 微密斯点胶技术有限公司 | Metering valve and metering method |
| CN203384002U (en) * | 2013-08-08 | 2014-01-08 | 中水北方勘测设计研究有限责任公司 | Pressure maintaining device for reciprocating type mud pump |
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| CN210396992U (en) * | 2019-06-17 | 2020-04-24 | 深圳市协鸿环保设备有限公司 | Non-pulsation metering pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020252991A1 (en) * | 2019-06-17 | 2020-12-24 | 深圳市协鸿环保设备有限公司 | Pulsation-free metering pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020252991A1 (en) | 2020-12-24 |
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