CN110159515A - Diaphragm pump - Google Patents
Diaphragm pump Download PDFInfo
- Publication number
- CN110159515A CN110159515A CN201810018073.1A CN201810018073A CN110159515A CN 110159515 A CN110159515 A CN 110159515A CN 201810018073 A CN201810018073 A CN 201810018073A CN 110159515 A CN110159515 A CN 110159515A
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- China
- Prior art keywords
- pump
- diaphragm
- chamber
- discharge
- housing
- 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.)
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Classifications
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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
- 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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- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
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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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
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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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/24—Bypassing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
This application discloses a kind of diaphragm pumps.Diaphragm pump includes pump chamber (110), pump intake (201) and pump discharge (202).Pump intake (201) is connected to the pump chamber entrance (112) of pump chamber (110), pump discharge (202) is connected to the pump chamber of pump chamber (110) outlet (113), and the volume of pump chamber (110) can change fluid sucking diaphragm pump from pump intake (201) and diaphragm pump is discharged from pump discharge (202) in fluid.Diaphragm pump further includes bypass circulation, the first check valve (210) and pressure-regulating device (220).Pump discharge (202) is connected to by bypass circulation with pump chamber entrance (112)；First check valve (210) is configured to block bypass circulation with predetermined pressure.Diaphragm pump further includes pressure-regulating device (220), and pressure-regulating device (220) is connect with the first check valve (210), for adjusting the size of predetermined pressure.
Description
Technical field
Present patent application is related to the positive displacement pump for transmitting fluid, in particular to a kind of diaphragm pump.
Background technique
Diaphragm pump is a kind of for transmitting the positive displacement pump of fluid, it mainly by diaphragm pump change it is intracavitary
Volume come realize sucking and be discharged fluid function.As a specific example of diaphragm pump, diaphragm pump, which can be, passes through motor
Drive the electric diaphragm pump of diaphragm.
Electric diaphragm pump is mainly by components groups such as micromotor, runner, bearing, piston, diaphragm, check valve disengaging ports
At.Micromotor generates circular motion, and motor shaft drives the rotation of (eccentric) runner.Runner is connect by bearing with piston, by
In eccentric reason, the rotary motion of runner is converted into pumping for piston by bearing, so that diaphragm be driven to do
Lower movement.
Diaphragm moves downward, and pump chamber volume increases, and air pressure is reduced, and under the action of pressure difference, extraneous fluid is passed through
In entrance suction pump room；Diaphragm moves upwards, and the indoor fluid of extrusion pump is discharged by outlet.Pass through the continuous fortune of motor
Turn so that diaphragm periodically moves up and down, so that pump be made to be continuously drawn into and be discharged fluid.
Import flap and outlet flap and pump chamber group become two check valves, realize unidirectional open function.Diaphragm is transported downwards
When dynamic, import flap is opened, and outlet flap is closed, and extraneous fluid flows into the pump housing；When diaphragm moves upwards, import flap is closed
It closes, prevents fluid reflux, while exporting flap opening, to keep fluid draining pump external.
But diaphragm pump in the prior art has the following problems:
1, during driving fluid by diaphragm, due to the movement of diaphragm up and down, thus continuous extrusion pump
Indoor fluid so that pumping indoor fluid generates pulsation and shock wave, and then affects the stability of diaphragm pump discharge；
2, fluid is discharged sometimes over predetermined value so as to cause diaphragm pump in the pressure for the fluid being discharged from membrane pump outlet
Pressure transient, influence the operation of the work package in diaphragm pump downstream.Once also, water outlet is blocked, the system of diaphragm pump
Pressure will continue to increase, to damage diaphragm pump.
For technical problem 1 set out above, the diaphragm pump with surge chamber is had been developed for, which is provided with
The surge chamber being connected to pump chamber, so that the fluid for entering diaphragm pump through entrance initially enters surge chamber, then again via surge chamber
Flow path between pump chamber enters pump chamber.To reduce the pulsation of fluid in this way.
For technical problem 2 set out above, bypass branch is arranged between the exit and pump chamber of pump in the prior art, and
And enter one end setting by-passing valve (that is, check valve) of pump chamber in bypass branch, thus the pressure of the fluid when diaphragm pump discharge
When greater than predetermined value, fluid opens by-passing valve to enter pump chamber by bypass branch, so that the fluid of membrane pump outlet discharge
Pressure stablize.And in the case where water outlet is plugged, system pressure can be protected not continue to increase, reach predetermined value
Afterwards with regard to pressure release.
But nonetheless, remain on that there are following technical problems:
1, the pressure of by-passing valve in the prior art is unadjustable, in the specific use process so as to cause diaphragm pump, no
The Fluid pressure from outlet discharge can be adjusted as the case may be, when needs are needed according to specific environment by the fluid in exit
Pressure is controlled in scheduled size, it is necessary to be reconfigured by-passing valve, undoubtedly be will increase the cost of product in this way, and use
When it is also very inconvenient.
Although 2, being provided with surge chamber in existing diaphragm pump, the structure of surge chamber cannot be effectively absorbed in fluid
Pulsation, so that the pulsation in fluid cannot be effectively reduced and cannot effectively maintain the stability of diaphragm pump discharge.
3, the fluid of the pulse and discharge in fluid still can effectively be weakened without proposition at present in the prior art
The technical solution of the diaphragm pump of pressure.The reason is that in a diaphragm pump, while surge chamber is set and is bypassed back
Road, the pump body structure that will lead to diaphragm pump are excessively complicated (while including pump chamber, surge chamber, bypass circulation and by-passing valve).From
From the perspective of processing, it is difficult to process such pump housing.
4, since the application scenarios of current diaphragm pump require diaphragm pump constantly to develop to the direction of miniaturization, if by above-mentioned
The components such as surge chamber and by-passing valve are simply disposed in diaphragm pump, and the volume that certainly will will lead to diaphragm pump increases, thus not
Conducive to the miniaturization of diaphragm pump.Therefore, the contradiction between the function increase of diaphragm pump and the miniaturization of diaphragm pump how is solved, is
Perplex the great difficult problem of the developer of this field.
5, in addition, (such as surge chamber is not only arranged, but also setting bypass circulation and bypass in the increase of function with diaphragm pump
Valve etc.), accomplish the miniaturization of diaphragm pump and integrated again, the structure that certainly will will lead to diaphragm pump is more complicated.Therefore, how
The product of design of diaphragm pump, so that the diaphragm pump is conducive to processing and manufacturing, while can improve the versatility of diaphragm pump again, this is also pendulum
A great problem in face of the designer of this field.
Summary of the invention
The embodiment of the invention provides a kind of diaphragm pumps, at least to solve the above technical problem existing in the prior art.
According to embodiments of the present invention, a kind of diaphragm pump, including pump chamber, pump intake and pump discharge are provided.Wherein, pump intake
It is connected to the pump chamber entrance of pump chamber, the pump chamber outlet of pump discharge and pump chamber.The volume of pump chamber can change thus by fluid
Diaphragm pump is sucked from pump intake and diaphragm pump is discharged from pump discharge in fluid.Diaphragm pump further includes bypass circulation, first unidirectional
Valve and pressure-regulating device.Pump discharge is connected to by bypass circulation with pump chamber entrance；First check valve is configured to predetermined pressure
Block bypass circulation；And pressure-regulating device is connect with the first check valve, for adjusting the size of predetermined pressure.
Optionally, the first check valve be configured so that the fluid in bypass circulation be applied to the first check valve pressure it is big
In the case where predetermined pressure, the fluid in bypass circulation can flow into pump chamber via pump chamber entrance.
Optionally, diaphragm pump further includes the surge chamber for the flow path being set between pump intake and pump chamber entrance.Surge chamber is matched
It is set to and is connected to pump intake and pump chamber entrance.
Optionally, diaphragm pump further includes the cavity for accommodating the first check valve and pressure-regulating device.Cavity with pump out
Mouthful be in pipe-like, and the duct wall for forming cavity and pump discharge be configured to it is raised to surge chamber.
Optionally, the pipeline of cavity and pump discharge is in alignment with each other in the axial direction.
Optionally, diaphragm pump includes first pump housing and second pump housing.First pump housing, which is provided with, is used to form the first of pump chamber
Recessed portion (is changed to diaphragm)；Second pump housing is provided with pump intake, pump discharge, cavity and the second recess for being used to form surge chamber
Portion.
Optionally, the first side of first pump housing is provided with the first recessed portion；Pump chamber entrance and pump chamber outlet are set to first
Second side opposite with the first side of the pump housing；And second pump housing is connected to second side of first pump housing.
Optionally, second pump housing includes the first side and second side relative to each other.The first side direction first of second pump housing
The pump housing, and it is provided with and the corresponding first passage of pump chamber entrance and second channel corresponding with pump chamber outlet.Second pump housing
Second side on be provided with the second recessed portion.
Optionally, pump intake, pump discharge and cavity are formed in the first side of second pump housing and second side of second pump housing
Between, and the duct wall for forming cavity and pump discharge is configured to the bottom surface protrusion from the second recessed portion.
Optionally, first passage is formed on the duct wall of cavity, cavity is connected to pump chamber entrance, and the pipe of cavity
The wall part raised to surge chamber in road is provided with the through-hole of connection surge chamber and cavity.
Optionally, pressure-regulating device includes spring, rod piece and nut.One end of spring is abutted with the first check valve,
The other end of spring is abutted with one end of rod piece；The other end of rod piece is provided with external screw thread；And nut is embedded at entering for cavity
At mouthful, it can be rotated around the entrance of cavity, and nut is provided with the internal screw thread with external screw thread cooperation.
Optionally, pump chamber inlet is provided with second one-way valve, is configured to open or close pump chamber entrance.
Optionally, it is provided with third check valve in second channel, is configured to open or close pump chamber outlet and pump discharge
Between flow path.
Optionally, diaphragm pump further includes pump cover, for sealing the second recessed portion, forms surge chamber.Wherein, in pump cover and
Flexible membrane is provided between two pump housings.
Optionally, the inner surface of pump cover is formed with the protrusion for abutting flexible membrane.
Optionally, the column from the bottom surface protrusion of the second recessed portion is provided in surge chamber.
Optionally, column is configured to abut flexible membrane.
Optionally, the column of the protrusion of surface from the duct wall of protrusion is additionally provided in surge chamber.
Optionally, column is configured to abut flexible membrane.
Optionally, the arc-shaped bolster from the bottom surface protrusion of the second recessed portion is provided in surge chamber.
Optionally, arc-shaped bolster is configured to abut flexible membrane.
Optionally, diaphragm pump further includes diaphragm, and diaphragm is configured to the first recessed portion of closing, forms pump chamber.
Optionally, diaphragm pump further includes the driving assembly for driving diaphragm movement.Driving assembly includes: motor, eccentric wheel, axis
It holds and piston.The one end for stating piston is connect with diaphragm, and the other end of piston is connect via bearing with eccentric wheel, eccentric wheel and electricity
The arbor of machine connects, and balance weight is provided on eccentric wheel.
In embodiments of the present invention, by the way that pressure-regulating device is arranged, so as to adjust the pressure of diaphragm pump discharge fluid
Power and flow, so that diaphragm pump can be adapted for different application environments.And in the embodiment of the present invention, the sky of surge chamber is utilized
Between come be provided as bypass check valve the first check valve and pump discharge so that diaphragm pump of the invention has buffering at the same time
In the case where both functions of Fluid pressure of pulsation function and balance pump chamber and exit in fluid, additionally it is possible to as far as possible
Ground reduces the volume of diaphragm pump, to improve the integrated level of diaphragm pump.Advantageously solve diaphragm pump function increase with every
Contradiction between miniaturization the two of membrane pump.Also, in embodiments of the present invention, using the side of isolated Structured Design
Formula efficiently reduces the difficulty of design and processing, so that it is each to improve diaphragm pump while increasing the function of diaphragm pump
The versatility and interchangeability of component.To solve technical problem proposed by the present invention.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the schematic diagram for showing the sectional view of the diaphragm pump of specific embodiment of patent application according to the present invention；
Fig. 2 is the schematic diagram for showing the exploded view of the diaphragm pump of specific embodiment of patent application according to the present invention；
Fig. 3 is the schematic diagram for showing the sectional view of the diaphragm pump of specific embodiment of patent application according to the present invention；
Fig. 4 is the schematic diagram of second pump housing of the diaphragm pump for the specific embodiment for showing patent application according to the present invention；
And
Fig. 5 is the schematic diagram for showing the sectional view of the diaphragm pump of specific embodiment of patent application according to the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and technology, method and apparatus should be considered as authorizing specification
A part.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, rather than
As limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label and word
Mother indicates similar terms in following attached drawing, therefore, once it is defined in a certain Xiang Yi attached drawing, then in subsequent attached drawing
It does not need that it is further discussed.
Shown in referring to figure 1, figure 2 and figure 3, the present invention provides a kind of diaphragm pump.Diaphragm pump includes pump chamber 110, pump intake 201
With pump discharge 202.Wherein, pump intake 201 is connected to the pump chamber entrance 112 of pump chamber 110, the pump chamber of pump discharge 202 and pump chamber 110
Outlet 113 connection, the volume of pump chamber 110 can change to by fluid from pump intake 201 suck diaphragm pump and by fluid from
Diaphragm pump is discharged in pump discharge 202.Diaphragm pump further includes bypass circulation, the first check valve 210 and pressure-regulating device 220.It is other
Pump discharge 202 is connected to by logical circuit with pump chamber entrance 112；First check valve 210 is configured to block bypass circulation with predetermined pressure；
Diaphragm pump further includes pressure-regulating device 220, and pressure-regulating device 220 is connect with the first check valve 210, for adjusting pre- level pressure
The size of power.
To which the present invention is unidirectional by setting on the basis of the first check valve 210 as bypass check valve and first
The pressure-regulating device 220 that valve 210 connects, so as to adjust the pressure that the first check valve 210 blocks bypass circulation.And then it can
To adjust the pressure and flow of diaphragm pump discharge fluid, so that diaphragm pump can be adapted for different application environments, to solve
Technical problem proposed by the present invention.In addition, the implementation of pressure-regulating device 220 is unlimited, air pressure, hydraulic etc. can be used
Mode is adjusted.As example, in the present embodiment, pressure-regulating device 220 is made of components such as springs 221.
Optionally, the first check valve 210 is configured so that the fluid in bypass circulation is applied to the first check valve 210
In the case that pressure is greater than predetermined pressure, the fluid in bypass circulation can flow into pump chamber 110 via pump chamber entrance 112.
Optionally, diaphragm pump further includes the surge chamber 230 for the flow path being set between pump intake 201 and pump chamber entrance 112.
Wherein, surge chamber 230 is configured to be connected to pump intake 201 and pump chamber entrance 112.To, can be with by the way that surge chamber 230 is arranged
Alleviate the pulsation of fluid in diaphragm pump.
Optionally, diaphragm pump further includes the cavity 203 for accommodating the first check valve 210 and pressure-regulating device 220, chamber
Body 203 and pump discharge 202 are in pipe-like, and the duct wall for forming cavity 203 and pump discharge 202 is configured to surge chamber 230
Protrusion.
To with the above arrangement, receiving cavity 203 and pump discharge 202 are come in the space that can use surge chamber 230.
Further, the first check valve 210 of bypass check valve is provided as using the space of surge chamber 230, pressure adjusts dress
Set 220 and pump discharge 202.
To since the present invention is provided as bypassing the first check valve 210 of check valve using the space of surge chamber 230
And pump discharge 202 so that diaphragm pump of the invention have the function of at the same time pulsation in buffer fluid and balance pump chamber with
In the case where function the two of the Fluid pressure in exit, additionally it is possible to the volume for reducing diaphragm pump as much as possible, to improve
The integrated level of diaphragm pump.Advantageously solve the contradiction between the function increase of diaphragm pump and miniaturization the two of diaphragm pump,
To solve the great difficult problem of the exploitation designer of puzzlement this field.
Optionally, cavity 203 and the pipeline of pump discharge 202 are in alignment with each other in the axial direction.So that processing is more square
Just, but also the structure of diaphragm pump is more compact.
Optionally, diaphragm pump includes first pump housing 100 and second pump housing 200.Wherein, first pump housing 100, which is provided with, is used for
Form the first recessed portion 118 of pump chamber 110；Second pump housing 200 is provided with pump intake 201, pump discharge 202, cavity 203 and uses
In the second recessed portion 236 for forming surge chamber 230.To increase diaphragm by way of this isolated Structured Design
While the function of pump, the difficulty of design and processing is efficiently reduced.And be conducive in this way by first pump housing 100 and second
The pump housing 200 is designed to standard component, to improve the versatility and interchangeability of diaphragm pump all parts.
Optionally, the first side of first pump housing 100 is provided with the first recessed portion 118；Pump chamber entrance 112 and pump chamber outlet
113 are set to second side opposite with the first side of first pump housing 100；And second pump housing 200 is connected to first pump housing 100
Second side.
Optionally, with reference to Fig. 2 and Fig. 4, second pump housing 200 includes the first side and second side relative to each other.Wherein, second
First side of the pump housing 200 towards first pump housing 100, and be provided with first passage 204 corresponding with pump chamber entrance 112 and with
Pump chamber exports 113 corresponding second channels 117.The second recessed portion 236 is provided in second side of second pump housing 200.
To which this design allows to more easily process each structure in second pump housing 200, to only need
Each structure in second pump housing 200 can be realized by the machining such as drilling.To significantly reduce processing cost,
Greatly improve processing efficiency.
Optionally, pump intake 201, pump discharge 202 and cavity 203 are formed in the first side and second of second pump housing 200
Between second side of the pump housing 200, and the duct wall for forming cavity 203 and pump discharge 202 is configured to from the second recessed portion 236
Bottom surface protrusion.
To be integrated with pump intake 201, pump discharge 202, cavity 203 in individual second pump housing 200 and delay
Rush multiple components such as room 230.To improve the integration and compactedness of bellows pumping element.
Optionally, first passage 204 is formed on the duct wall of cavity 203, and cavity 203 is connected to pump chamber entrance 112.
The duct wall of cavity 203 part raised to surge chamber 230 is provided with the through-hole 232 of connection surge chamber 230 and cavity 203.From
And by the design, surge chamber 230 can be connected to pump chamber 110 by cavity 203.
Optionally, pressure-regulating device 220 includes spring 221, rod piece 222 and nut 223.One end of spring 221 with
First check valve 210 abuts, and the other end of spring 221 is abutted with one end of rod piece 222；The other end of rod piece 222 is provided with outer
Screw thread；And nut 223 is embedded at the inlet of cavity 203, can rotate around the entrance of cavity 203, and nut 223 is set
It is equipped with the internal screw thread with external screw thread cooperation.
So as in this way, by rotating the nut 223 as insert nut 223, that is, be adjusted and be used as by-passing valve
The rod piece 222 of bar 222 enters the distance of cavity 203, and then passes through the collapsing length of adjustment spring 221, adjusts single as bypass
To the pressure of the first check valve 210 of valve
Optionally, it is provided with second one-way valve 114 at pump chamber entrance 112, is configured to open or close pump chamber entrance
112.Second one-way valve 114 is used as pump chamber inlet one-way valve 114, prevents the fluid reflux into pump chamber 110.
Optionally, it is provided with third check valve 115 in second channel 117, is configured to open or close pump chamber outlet 113
With the flow path between pump discharge 202.To which third check valve 115 is used as Outlet check valves 115, can prevent from 110 row of pump chamber
Fluid reflux out.
Optionally, diaphragm pump further includes pump cover 300, for sealing the second recessed portion 236, forms surge chamber 230.Wherein,
Flexible membrane 235 is provided between pump cover 300 and second pump housing 200.To pass through flexible membrane 235, the buffering of diaphragm pump
Room 230 can preferably absorb the pulsation in fluid, to significantly improve 230 ground absorption characteristic of surge chamber.
Optionally, the inner surface of pump cover 300 is formed with the protrusion 310 for abutting flexible membrane 235.To in flexible membrane
Space is formed between 235 and pump cover 300, so as to preferably play the effect of flexible membrane 235.
Optionally, the column 233 of the bottom surface protrusion from the second recessed portion 236 is provided in surge chamber 230.Optionally,
Column 233 is configured to abut flexible membrane 235.Optionally, the surface from the duct wall of protrusion is additionally provided in surge chamber 230
The column 233 of protrusion.Optionally, column 233 is configured to abut flexible membrane 235.Optionally, it is arranged in surge chamber 230
There is the arc-shaped bolster 231 of the bottom surface protrusion from the second recessed portion 236.Optionally, arc-shaped bolster 231 is configured to abut
Flexible membrane 235.
To can preferably alleviate the pulsation in fluid, thus pole by column 233 and arc-shaped bolster 231
The earth improves the efficiency of surge chamber 230.In the present embodiment, column 233 and arc-shaped bolster 231 and second pump housing
200 are integrally formed.
Optionally, diaphragm pump further includes diaphragm 111, and diaphragm 111 is configured to the first recessed portion 118 of closing, forms pump chamber
110。
Optionally, refering to what is shown in Fig. 5, diaphragm pump further includes the driving assembly 400 for driving diaphragm 111 to move, driving assembly
400 include: motor 410, eccentric wheel 420, bearing 430 and piston 440.One end of piston 440 is connect with diaphragm 111, piston
440 other end is connect via bearing 430 with eccentric wheel 420, and eccentric wheel 420 is connect with the arbor of motor 410, and its
Balance weight (not shown) is provided on middle eccentric wheel 420.To can effectively offset eccentric wheel because bias causes by balance weight
Vibration.
As a specific embodiment, a specific embodiment of the invention is described as follows:
Referring to shown in attached drawing 1 and Fig. 2, diaphragm pump includes first pump housing 100, second pump housing 200, pump cover 300 and driving
Component 400.Wherein, second pump housing 200 is set to the top of first pump housing 100.Pump cover 300 is set to the upper of second pump housing 200
Portion, and for sealing second pump housing 200.Driving assembly 400 is set to the lower section of second pump housing 200, for driving diaphragm pump.
The pump chamber 110 of diaphragm pump is set in first pump housing 100.The downside of first pump housing 100 is provided with to form pump chamber 110
Recessed portion 118 (i.e. the first recessed portion), and the lower part of recessed portion 118 is sealed by diaphragm 111.Diaphragm 111 is by elastic material
It is made, so that the volume of pump chamber 110 changes with the deformation of diaphragm 111.
Driving assembly 400 includes motor 410, eccentric wheel 420, bearing 430, piston 440, pump seat 450 and flap 460.
Wherein, eccentric wheel 420 is connect with the arbor of motor 410.One end of piston 440 is connect via bearing 430 with eccentric wheel 420, living
The other end of plug 440 is connect with diaphragm 111.To which motor 410 drives eccentric wheel 420 to rotate, so that it is past to drive piston 440 to do
Multiple movement, and then diaphragm 111 is driven to expand or reduce the volume of pump chamber 110.
To pull diaphragm 111 to extend downwardly, to expand the volume of pump chamber 110, make when piston 440 moves downward
The air pressure obtained in pump chamber 110 is reduced, and under the action of pressure difference, extraneous fluid is sucked pump chamber 110 by pump intake 201
It is interior.When piston 440 moves upwards, driving diaphragm 111 upwardly extend, squeeze pump chamber 110 in fluid by go out pumping hole 202 to
Outer discharge.To continuously running so that diaphragm 111 periodically moves up and down, to keep diaphragm pump continuous by motor 410
Ground sucking and discharge fluid.
In addition, increasing a balance weight preferably on eccentric wheel 420 although being not shown, can effectively offsetting eccentric wheel 420
Because being shaken caused by bias.
In addition, referring to fig. 1 and fig. 2, driving assembly is contained in pump seat 450, and pass through screw 470 for flap
460 are fixed on the opening of pump seat 450, realize the sealing of pump seat 450.
First pump housing 100 is set to the top of pump seat 450, and first pump housing 100 includes by the closed pump chamber of diaphragm 111
110.Referring to fig. 1 and fig. 2, pump chamber entrance 112 and pump chamber outlet 113 are provided on first pump housing 110.Wherein, fluid passes through
Pump chamber 110 is entered by pump chamber entrance 112, and is discharged via pump chamber outlet 113 from pump chamber 110.
It is provided with inlet one-way valve 114 (that is, second one-way valve) at pump chamber entrance 112, avoids enter into the fluid of pump chamber 110
Reflux.And it is provided with Outlet check valves 115 (that is, third check valve) at pump chamber outlet 113, for preventing outflow pump chamber 110
Fluid flow back to pump chamber 110 again.
With reference to shown in attached drawing 2 and Fig. 3, the pump intake 201 and pump discharge 202 of diaphragm pump are all set on second pump housing 200.
And the pump chamber entrance 112 being arranged on the pump intake 201 and first pump housing 100 being arranged on second pump housing 200 is in fluid communication.Outlet
Check valve 115 be set to second pump housing 200 from pump chamber outlet 113 to the channel 117 pump discharge 202 (that is, second is logical
Road) in.One end (valve head) of Outlet check valves 115 is connected to pump chamber outlet 113, for blocking pump chamber outlet 113.And it exports
The other end of check valve 115 is arranged with spring 116, and spring 116 is connected to second pump housing 200, pre- for providing to check valve 115
Fixed restoring force.
(do not show in figure in addition, second pump housing 200 is provided with the bypass circulation being connected to pump discharge 202 at pump discharge 202
Out).One end (i.e. bypass circulation entrance) of bypass circulation is connected to pump discharge 202, the other end (i.e. bypass circulation outlet) and pump
Chamber inlet 112 is connected to (not shown).
With reference to shown in Fig. 1-3, second pump housing 200 leads to the bypass circulation exit of pump chamber entrance 112 in bypass circulation, if
It is equipped with bypass check valve 210 (that is, first check valve).Also, second pump housing 200 is additionally provided with for adjusting bypass check valve
The pressure-regulating device 220 of 210 pressure.Pressure-regulating device 220 includes spring 221, bypass valve rod 222 and adjusting nut
223。
With reference to shown in Fig. 1 and Fig. 3, it is provided on second pump housing 200 in duct-like for accommodating bypass 210 He of check valve
The cavity 203 of pressure-regulating device 220.Cavity 203 is provided with the channel 204 (that is, first passage) being connected to pump chamber 110.From
And when the Fluid pressure of discharge is greater than predetermined value from from pump discharge 202, the segment fluid flow that pump discharge 202 is discharged flows through side
Logical circuit and when the exit of bypass circulation will bypass check valve 210 and open, thus via channel 204 and pump chamber entrance
112 enter pump chamber 110.To so that the pressure value of the fluid of diaphragm pump discharge is stablized.
Meanwhile in order to enable diaphragm pump can adapt in a variety of varying environments.It is single that second pump housing 200 is provided with adjusting bypass
To the pressure-regulating device 220 of the pressure of valve 210.Pressure-regulating device 220 includes spring 221, bypass valve rod 222 (that is, rod piece
And adjusting nut 223 (that is, nut 223) 222).Wherein one end of spring 221 is sheathed on bypass check valve 210, spring 221
The other end with bypass valve rod 222 one end abuts, thus for bypass check valve 210 scheduled pressure is provided.Also, cavity
203 end is provided with adjusting nut 223, which is embedded in the end of cavity 203, so as to surround cavity
203 end (i.e. entrance goes out) rotation.And the other end for bypassing valve rod 222 is provided with external screw thread, thus with adjusting nut 223
Screw-internal thread fit.In this way, be the distance that adjustable by-pass valve bar 222 enters cavity 203 by rotating adjusting nut 223, into
And pass through the collapsing length of adjustment spring 221, adjust the pressure of bypass check valve 210.
To which the bypass for realizing adjustable pressure on diaphragm pump by above scheme present patent application is unidirectional
Valve 210, so that the pressure adjustable of bypass circulation.So that diaphragm pump can be adapted for different application environment, so that every
Membrane pump using more flexible, expand the use scope of diaphragm pump.
Further, surge chamber 230 is used to form with reference to figures 1 through shown in attached drawing 4, second pump housing 200 is additionally provided with
Recessed portion 236 (that is, second recessed portion), recessed portion 236 are sealed with surge chamber diaphragm 235 by O-ring 234.And pump cover 300
It is fixed on surge chamber diaphragm 235, and is fastened by screw rod 301.
With reference to attached drawing 4, surge chamber 230 is connected to pump intake 201, so that the fluid of diaphragm pump passes through pump intake 201 first
Into surge chamber 230.And it may further see that surge chamber 230 is provided with through-hole 232 by attached drawing 4, so that surge chamber
230 are connected to pump chamber entrance 112.It can be via through-hole 230, pump chamber entrance 112 and pump hence into the fluid of surge chamber 230
Chamber inlet check valve 114 enters in pump chamber.
Due to being provided with surge chamber 230, the pulsation of the fluid due to caused by the extruding of diaphragm 111 is reduced.But phase
For the prior art, of the invention is theed improvement is that, surge chamber 230 is provided with surge chamber diaphragm 235, surge chamber diaphragm
(such as rubber) is made in 235 flexible elastic materials, so as to absorb the pulsation in fluid to greatest extent.And surge chamber
Multiple bolsters are additionally provided in 230, for the pulse in buffer fluid.Bolster includes: column 233 and arc-shaped slow
Rush wall 231.Wherein, arc-shaped buffer wall 231 extends on the bottom surface of surge chamber 230 along arc-shaped direction.To pass through buffering
Part, pulsation that can further in surge chamber 230 in buffer fluid.To the flow of effectively stable diaphragm pump.
The component for forming the pump housing is divided into first pump housing 100 and second pump housing 200 by the present invention.And the present invention is in the first pump
Pump chamber 110 is formed in body 100, and pump intake 201, pump discharge 202, bypass check valve 210, pressure are formed on second pump housing 200
Regulating device 220 and surge chamber 230.Thus by way of this isolated Structured Design, in the function for increasing diaphragm pump
While energy, the difficulty of design and processing is efficiently reduced.And be conducive in this way by first pump housing 100 and second pump housing
200 are designed to standard component, to improve the versatility and interchangeability of diaphragm pump all parts.
Simultaneously because surge chamber 230 is set to the top of second pump housing 200 by the present invention, to only need in second pump housing
End face processing buffer room 230, thus be conducive to reduce surge chamber 230 processing cost, improve processing efficiency.
In addition, further, referring to shown in attached drawing 1, attached drawing 3 and attached drawing 4, cavity 203 and pump discharge 202 be pipe
Road shape, and be oppositely arranged in a manner of being in alignment with each other.And the channel 204 for being connected to cavity 203 and pump chamber 110 is to be formed in
Hole on second pump housing, 200 bottom surface；The channel of connection pump discharge 202 and pump chamber 110 is also formed on second pump housing, 200 bottom surface
Hole.
To which this design allows to more easily process each structure in second pump housing 200, to only need
Each structure in second pump housing 200 can be realized by the machining such as drilling.To significantly reduce processing cost,
Greatly improve processing efficiency.
Similarly, pump chamber 110 is set to the bottom surface of first pump housing 100 by the present invention, and by pump chamber entrance 112 and is pumped
Room outlet 113 is set to the top surface of first pump housing 100.To pump chamber 110 and pump chamber entrance 112 and pump chamber outlet 113
Processing be to be formed on the end face of first pump housing 100, in this way, further reduced pump chamber 110
Processing cost improves processing efficiency.
In addition, the tube wall for forming the pipeline of cavity 203 and pump discharge 202 is dashed forward into surge chamber 230 referring to shown in attached drawing 4
Out.To which a part of bottom surface of surge chamber 230 is plane, another part bottom surface is from flat bottom protrusion.
To with the above arrangement, receiving cavity 203 and pump discharge 202 are come in the space that can use surge chamber 230.
Further, bypass check valve 210, pressure-regulating device 220 and the pump discharge being arranged using the space of surge chamber 230
202。
To, bypass check valve 210 since the present invention is arranged using the space of surge chamber 230 so that it is of the invention every
Membrane pump has the function of both functions of Fluid pressure in pulsing in buffer fluid and balance pump chamber and exit at the same time
In the case of, additionally it is possible to the volume for reducing diaphragm pump as much as possible, to improve the integrated level of diaphragm pump.Advantageously solve every
The function of membrane pump increases the contradiction between miniaturization the two of diaphragm pump, to solve the exploitation design of puzzlement this field
The great difficult problem of personnel.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is limiting the scope of the invention；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of invention protection scope.
In addition, above-mentioned the embodiment of the present application serial number is for illustration only, do not represent the advantages or disadvantages of the embodiments.In the upper of the application
It states in embodiment, all emphasizes particularly on different fields to the description of each embodiment, there is no the part being described in detail in some embodiment, may refer to it
The associated description of his embodiment.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. diaphragm pump, including pump chamber (110), pump intake (201) and pump discharge (202), wherein the pump intake (201) and institute
State pump chamber entrance (112) connection of pump chamber (110), the pump chamber outlet (113) of the pump discharge (202) and the pump chamber (110)
Connection, the volume of the pump chamber (110) can change to by fluid from the pump intake (201) suck the diaphragm pump and
The diaphragm pump is discharged from the pump discharge (202) in fluid, which is characterized in that
The diaphragm pump further includes bypass circulation, the first check valve (210) and pressure-regulating device (220), wherein
The pump discharge (202) is connected to by the bypass circulation with the pump chamber entrance (112)；
First check valve (210) is configured to block the bypass circulation with predetermined pressure；And
The pressure-regulating device (220) connect with first check valve (210), for adjusting the big of the predetermined pressure
It is small.
2. diaphragm pump according to claim 1, which is characterized in that the diaphragm pump further includes being set to the pump intake
(201) surge chamber (230) of the flow path between the pump chamber entrance (112), wherein
The surge chamber (230) is configured to be connected to the pump intake (201) and the pump chamber entrance (112).
3. diaphragm pump according to claim 2, which is characterized in that the diaphragm pump further includes single for accommodating described first
To the cavity (203) of valve (210) and the pressure-regulating device (220), the cavity (203) is in the pump discharge (202)
Pipe-like, and the duct wall for forming the cavity (203) and the pump discharge (202) is configured to the surge chamber (230)
Protrusion.
4. diaphragm pump according to claim 3, which is characterized in that the diaphragm pump includes first pump housing (100) and second
The pump housing (200), wherein
First pump housing (100) is provided with the first recessed portion (118) for being used to form the pump chamber (110)；
Second pump housing (200) be provided with the pump intake (201), the pump discharge (202), the cavity (203) and
It is used to form the second recessed portion (236) of the surge chamber (230).
5. diaphragm pump according to claim 4, which is characterized in that
First pump housing (100) side is provided with first recessed portion (118)；
The pump chamber entrance (112) and pump chamber outlet (113) are set to the other side of first pump housing (100)；And
Second pump housing (200) is connected to the other side of first pump housing (100).
6. diaphragm pump according to claim 5, which is characterized in that
The side of second pump housing (200) is provided with and the pump chamber entrance towards first pump housing (100)
(112) corresponding first passage (204) and second channel (117) corresponding with pump chamber outlet (113),
Second recessed portion (236) is provided on the other side of second pump housing (200).
7. diaphragm pump according to claim 6, which is characterized in that
The pump intake (201), the pump discharge (202) and the cavity (203) are formed in second pump housing (200)
Between the side and the other side of second pump housing (200), and
The duct wall for forming the cavity (203) and the pump discharge (202) is configured to from second recessed portion (236)
Bottom surface protrusion.
8. diaphragm pump according to claim 3, which is characterized in that the pressure-regulating device (220) includes spring
(221), rod piece (222) and nut (223), wherein
One end of the spring (221) is abutted with first check valve (210), the other end of the spring (221) with it is described
One end of rod piece (222) abuts；
The other end of the rod piece (222) is provided with external screw thread；And
The nut (223) is embedded at the inlet of the cavity (203), can rotate around the entrance of the cavity (203),
And the nut (223) is provided with the internal screw thread with external screw thread cooperation.
9. diaphragm pump according to claim 4, which is characterized in that the diaphragm pump further includes pump cover (300), for sealing
Second recessed portion (236), forms the surge chamber (230), wherein
Flexible membrane (235) are provided between the pump cover (300) and second pump housing (200).
10. diaphragm pump according to claim 9, which is characterized in that the inner surface of the pump cover (300), which is formed with, abuts institute
State the protrusion (310) of flexible membrane (235).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810018073.1A CN110159515A (en) | 2018-01-09 | 2018-01-09 | Diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810018073.1A CN110159515A (en) | 2018-01-09 | 2018-01-09 | Diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110159515A true CN110159515A (en) | 2019-08-23 |
Family
ID=67641143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810018073.1A Pending CN110159515A (en) | 2018-01-09 | 2018-01-09 | Diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159515A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962225A (en) * | 2022-05-17 | 2022-08-30 | 宁波捷尔天电气有限公司 | Small-size high pressure diaphragm pump |
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|---|---|---|---|---|
| US1976098A (en) * | 1933-07-27 | 1934-10-09 | Smith Welding Equipment Corp | Air pump |
| GB2071219A (en) * | 1980-02-16 | 1981-09-16 | Becker Erich | Pump having a pressure responsive valve which operates in a manner which reduces pump starting loads |
| CN2859002Y (en) * | 2005-09-05 | 2007-01-17 | 深圳市英尼克电器有限公司 | Diaphragm pump capable of limiting and adjusting pressure |
| CN200952465Y (en) * | 2006-10-13 | 2007-09-26 | 蔡应麟 | Constant pressure type booster pump |
| CN101050763A (en) * | 2006-04-03 | 2007-10-10 | 徐兆火 | Diaphragm pump of constant pressure type |
| CN101382130A (en) * | 2007-09-07 | 2009-03-11 | 日立空调·家用电器株式会社 | Air pump |
| CN101737315A (en) * | 2008-11-21 | 2010-06-16 | 蔡应麟 | Shock damper for outlet pipe of diaphragm pump |
| CN104114865A (en) * | 2012-02-16 | 2014-10-22 | Ulvac机工株式会社 | Pump device, and method for controlling same |
| CN206397704U (en) * | 2017-01-14 | 2017-08-11 | 东莞市聚瑞电气技术有限公司 | A kind of membrane pump not flowed back |
| CN209510596U (en) * | 2018-01-09 | 2019-10-18 | 宁波捷尔天电气有限公司 | Diaphragm pump |
-
2018
- 2018-01-09 CN CN201810018073.1A patent/CN110159515A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1976098A (en) * | 1933-07-27 | 1934-10-09 | Smith Welding Equipment Corp | Air pump |
| GB2071219A (en) * | 1980-02-16 | 1981-09-16 | Becker Erich | Pump having a pressure responsive valve which operates in a manner which reduces pump starting loads |
| CN2859002Y (en) * | 2005-09-05 | 2007-01-17 | 深圳市英尼克电器有限公司 | Diaphragm pump capable of limiting and adjusting pressure |
| CN101050763A (en) * | 2006-04-03 | 2007-10-10 | 徐兆火 | Diaphragm pump of constant pressure type |
| CN200952465Y (en) * | 2006-10-13 | 2007-09-26 | 蔡应麟 | Constant pressure type booster pump |
| CN101382130A (en) * | 2007-09-07 | 2009-03-11 | 日立空调·家用电器株式会社 | Air pump |
| CN101737315A (en) * | 2008-11-21 | 2010-06-16 | 蔡应麟 | Shock damper for outlet pipe of diaphragm pump |
| CN104114865A (en) * | 2012-02-16 | 2014-10-22 | Ulvac机工株式会社 | Pump device, and method for controlling same |
| CN206397704U (en) * | 2017-01-14 | 2017-08-11 | 东莞市聚瑞电气技术有限公司 | A kind of membrane pump not flowed back |
| CN209510596U (en) * | 2018-01-09 | 2019-10-18 | 宁波捷尔天电气有限公司 | Diaphragm pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962225A (en) * | 2022-05-17 | 2022-08-30 | 宁波捷尔天电气有限公司 | Small-size high pressure diaphragm pump |
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