CN109555671A - Diaphragm pump - Google Patents
Diaphragm pump Download PDFInfo
- Publication number
- CN109555671A CN109555671A CN201811125618.5A CN201811125618A CN109555671A CN 109555671 A CN109555671 A CN 109555671A CN 201811125618 A CN201811125618 A CN 201811125618A CN 109555671 A CN109555671 A CN 109555671A
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- CN
- China
- Prior art keywords
- diaphragm
- pressure
- return
- flow line
- closure elements
- 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
- F04B43/06—Pumps having fluid drive
- F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
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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
- F04B43/06—Pumps having fluid drive
-
- 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
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
-
- 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
- F04B49/10—Other safety measures
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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
- F04B2205/00—Fluid parameters
- F04B2205/06—Pressure in a (hydraulic) circuit
-
- 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
- F04B2205/00—Fluid parameters
- F04B2205/16—Opening or closing of a valve in a circuit
-
- 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
- F04B2207/00—External parameters
- F04B2207/01—Load in general
-
- 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
- F04B2207/00—External parameters
- F04B2207/70—Warnings
- F04B2207/703—Stopping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to diaphragm pumps, with conveying chamber and operating room, operating room is fillable or is filled hydraulic fluid and is operably coupled to pressure generation device, to apply oscillation pressure to hydraulic fluid, it further include diaphragm, with at least one membrane layer and diaphragm core, conveying chamber and operating room are separated from each other by diaphragm, diaphragm operationally or can be operably coupled to the diaphragm return mechanism including pull rod, diaphragm return mechanism applies on diaphragm on the direction of induction stroke position or can apply return force, it further include the storage room for keeping hydraulic fluid, operating room and storage room by the closed return flow line of closure elements by being connected to each other, and closure elements are operably coupled to diaphragm core and diaphragm return mechanism, so that return force and the power for resisting the pressure of return force due to the Fluid pressure in operating room act on closure elements , it is the sum of return force and the power of pressure on closure elements, return flowing channel is opened when being more than scheduled trigger force.
Description
Technical field
The present invention relates to a kind of diaphragm pumps of diaphragm position control function safety.
Background technique
Diaphragm pump has conveying chamber and operating room, and there is conveying chamber sucking interconnecting piece and press-in connection portion, operating room to pass through
Diaphragm and conveying chamber separate.For pumped (conveying) medium, diaphragm is reciprocally moved with mode of oscillation between the first and second positions,
Middle operating room is filled with hydraulic fluid, and oscillation pressure (or surge pressure) is applied to hydraulic fluid.The two positions of diaphragm are logical
Frequently referred to pressure stroke position and induction stroke position.
In general, press-in connection portion is connected to conveying chamber via pressure valve, pressure valve is formed as check-valves, and sucks interconnecting piece
It is connected to conveying chamber via inlet valve, inlet valve is identically formed as check-valves.Second is moved to from first position in diaphragm
During setting, i.e., the volume of so-called induction stroke, conveying chamber increases, it means that the pressure decline in conveying chamber.In conveying chamber
Pressure once drop to the pressure in the suction line that connect of sucking interconnecting piece hereinafter, inlet valve opening, and Jie to be conveyed
Matter is inhaled into conveying chamber via sucking interconnecting piece.Diaphragm one moves that (this is so-called along the direction of first position from the second position again
Pressure stroke), the volume in conveying chamber just reduces, and the pressure rise in conveying chamber.Valve closure is sucked, it is to be conveyed to prevent
Medium flow field returns suction line.Pressure one in conveying chamber is more than the pressure in the pressure line connecting with press-in connection portion, pressure
Valve turns on, and allows to force the pumped (conveying) medium in conveying chamber to enter pressure line.
Diaphragm itself can be preloaded along the direction of induction stroke position with elastic type.Diaphragm will be always in work
The position for being cancelled each other out or being resisted with the power on diaphragm.Power that Fluid pressure in conveying chamber generates and along induction stroke direction
The power that is generated by elastic preload offset or resist the power that the Fluid pressure in operating room generates.
Therefore, applying oscillation pressure to hydraulic fluid leads to diaphragm oscillation movement, and related to this, causes to convey
The oscillation pumping procedure of fluid, enters pressure line from suction line.
The diaphragm pump of hydraulic operation is preferably used for conveying trandfer fluid under high pressure, this is because due to there is flow of pressurized
Body uniformly loads diaphragm, and therefore the service life of diaphragm is long.
Herein, oscillation pressure is usually applied to hydraulic fluid by mobile piston.Flowing through piston or inlet valve is serious
In the case where pollution, it is possible to, the Fluid Volume in operating room will deviate desired amount.In this case or in operating room
Too many hydraulic fluid can be assembled, so that membrane displacement is more than that may be present hydraulic in its pressure stroke position or operating room
Fluid is very little, so that diaphragm can not reach pressure stroke position.In the first scenario, there are the danger of diaphragm overload, this meetings
Shorten its service life and may cause damage.In the latter case, the delivery volume of each stroke is undesirably reduced.
Art describes solutions for this problem, such as 10 2,013 105 072A1 of DE to disclose one
Kind solution, according to the program, mobile diaphragm is more than that pressure stroke position can open the logical of the locker room for leading to hydraulic fluid
Road, so that the pressure in operating room reduces automatically.
It is desirable that it is ensured that all loads and operating condition lower diaphragm plate pump supply, to avoid damage diaphragm pump, and especially
It is damage diaphragm itself.Particularly, herein the problem of is possible be for example since suction line is closed or is polluted and the event of appearance
Barrier.In this case, the trandfer fluid in conveying chamber or very little or do not have.As described above, the fluid pressure in conveying chamber
The Fluid pressure in operating room is offset or resisted to the power that power generates and the power generated by elastic preload along induction stroke direction
The power of generation.However, diaphragm, which may deviate, is more than if not having the amount of trandfer fluid or trandfer fluid too low in conveying chamber
Pressure stroke position, because the Fluid pressure in conveying chamber is too low.
In order to solve this problem, such as in the prior art, it is known that (retract or return by means of powerful reset spring
It falls).However, these the shortcomings that are, it will appear serious cavitation or cavitation corrosion in conveying chamber, this and formation of foam and noise
Generation it is related, and diaphragm is subjected to extreme or extreme value load, especially at clamping point.
Summary of the invention
Therefore, the purpose of the present invention is to overcome the shortcomings of the existing technology, and is especially to provide a kind of diaphragm pump, prevents
Diaphragm is damaged in the case of a fault, preferably also prevents noise and forms foam.
The purpose realizes that the diaphragm pump has conveying chamber and operating room by following diaphragm pumps, wherein conveying chamber includes pressure
Power interconnecting piece and sucking interconnecting piece, and wherein, operating room can be filled with or be filled with hydraulic fluid, and operationally
It is connected to pressure generation device, further includes diaphragm to apply oscillation pressure to hydraulic fluid, diaphragm has at least one membrane layer
With diaphragm core, conveying chamber and operating room are separated from each other by diaphragm, and induction stroke position can be gone to from pressure stroke position
And return pressure stroke position, wherein the volume of conveying chamber is less than in sucking punching when diaphragm is in pressure stroke position
Volume when journey position, and wherein, diaphragm are operably connected or can be operably coupled to diaphragm return mechanism, diaphragm
Return mechanism includes pull rod, and pull rod applies to diaphragm along the direction of induction stroke position or can apply return force to diaphragm, also
Including storage room, for keeping or storing hydraulic fluid, and wherein, operating room and storage room are connected each other by return flow line
It connects, return flow line is closed by means of closure elements, and wherein, and closure elements are operably coupled to diaphragm core and diaphragm returns
Device, so that the masterpiece of the pressure of return force and return force caused by offsetting or resist due to the Fluid pressure in operating room
It is the power of the return force on closure elements and pressure when being more than scheduled trigger force for closure elements, and wherein
Summation, return flow line are opened.Foundation of the invention be it is following be surprisingly found that, i.e., since closure elements are operably coupled to
Diaphragm core and diaphragm return mechanism this Creative Design, the power limit that can effectively will act on diaphragm are predetermined value,
In this way, return flow line is opened when being more than trigger force, and the Fluid pressure in operating room reduces, in this way, fluid can flow out work
Make room, into storage room.If two power act in opposite direction, the result is that since biggish power size is big by lesser power
Small reduction causes the size of body force to reduce.However, this assumes that power acts at same position.According to the present invention
In diaphragm pump, return force acts on the end regions of the pull rod of the diaphragm return mechanism positioned at the opposite place of diaphragm or end regions
In, and the power of pressure acts in the region of diaphragm.Therefore, according to the present invention, the position of the power of return force and pressure is located at
On the opposite side of closure elements, so that the increasing action of the power of return force and pressure is with closure elements sheet.If according to this
Invention, the summation are more than scheduled trigger force, then closure elements are opened, and the power of pressure reduces.Therefore, protect diaphragm will not
By excessively high load.In contrast, the discharge pressure in conveying chamber directly counteracts the power of pressure, because two power are directly made
With on diaphragm (in the side of closure elements).Therefore, the size of the power of pressure by conveying chamber with respect to its act on delivery pressure
The power of power reduces.If the discharge pressure in conveying chamber declines suddenly, on the contrary, the size of the power of pressure sharply increases, make
The sum of power and the return force for obtaining resulting pressure can be more than trigger force, this is initially and diaphragm is in induction stroke position and pressure
Offset between stroke position is unrelated.However, it is possible to be particularly arranged to, leave induction stroke position in membrane displacement and be more than
In the case where pressure stroke position, closure elements and return flow line are opened.In order to generate return force, according to the invention it is preferred to
Ground uses elastic element.If diaphragm moves away induction stroke position and be more than pressure stroke position, elastic element effect
Return force on induction stroke locality increases.Meanwhile the counteracting that generates of fluid in operating room or resisting return force simultaneously
The power for acting on the pressure on diaphragm in opposite direction increases.By properly selecting trigger force, diaphragm can be thereby determined that
Peak excursion.Creativeness embodiment according to the present invention, this can also in the case where not considering the discharge pressure in conveying chamber
To realize.Embodiment according to the present invention, it has therefore proved that, here it is particularly advantageous that return flow line extends partly into diaphragm return
Device.According to the present invention, closure elements are operably coupled to diaphragm core and diaphragm return mechanism.It has been found that return flow line is special
It does not extend partially into diaphragm return mechanism suitably, allow to provide diaphragm core, diaphragm return mechanism, closure elements and returns
The overall plan of circulation road.It was demonstrated that this construction is particularly compact reliable.Additionally, it is possible to preferably, diaphragm core and pull rod that
This is detachably connected, wherein when diaphragm core is connected with pull rod, return flow line closing, and when diaphragm core and pull rod do not connect
When connecing, return flow line is opened.It can be set into, wherein closure elements are formed by diaphragm core.
According to the preferred embodiment, diaphragm core and pull rod are formed together closure elements.Both detachably connects
It connects, wherein only discharge this connection when being more than trigger force.Once having discharged, working fluid can be by preferred for connection
The return flow line being partly integrated into pull rod flows into storage room, so that the pressure reduction in operating room.Implementation according to the present invention
Mode, it may be preferred that closure elements include magnet and/or are operably coupled to magnet, wherein the direction of magnetic force and strong
Degree corresponds to scheduled trigger force, and when being more than trigger force, return flow line is opened.According to the present invention it is possible to be arranged to, every
Film core includes magnet, and magnet is operably coupled to the pull rod of diaphragm return mechanism, and is designed and configured to protect diaphragm core
It holds and is connect with pull rod, until alreading exceed trigger force.If it exceeds trigger force, then diaphragm core is separated with pull rod, and two members
Part individualism.In this state, the return flow line being preferably integrated into pull rod is opened, and working fluid can flow into storage
Room is deposited, so that the pressure in operating room reduces, and therefore the power of pressure reduces.According to the present invention, the magnetic of diaphragm core and pull rod connects
Connecing particularly has the advantages that provide reversible scheme.As long as being lower than trigger force, diaphragm core and pull rod can be again coupled to, and
Diaphragm pump according to the present invention can continue to run, without damaging diaphragm.It is, of course, also possible to be arranged to, magnet is included in drawing
In bar, including in another element of diaphragm return mechanism and/or include in another element of diaphragm pump.Alternatively, also
It can be set into, wherein closure elements include expected breaking point, as overload protection, it is contemplated that breaking point resists trigger force, until
More than trigger force, and when being more than trigger force, it is contemplated that breaking point fracture, and return flow line is opened.This expected breaking point is made
It for the component part that pull rod is connect with diaphragm head, prevents identical repetition from coupling, and therefore leads to following situations, i.e., in needle
In the case where there is protection situation to diaphragm, corresponding component must be replaced in trial operation again or before putting into operation.May be used also
To be arranged to, wherein operating room is arranged in the housing, wherein return flow line extends partially past shell in the region of pull rod.
The operating room of diaphragm pump according to the present invention is separated generally by means of shell and storage room.In order to be arranged allow working fluid from
Operating room flows into the return flow line of storage room, and the channel must necessarily be conducted through aforementioned shell.According to the present invention,
Proof especially has positive effect, if the return flow line for extending partially into pull rod extends to the shell area near pull rod
In.Therefore, hose, pipeline etc. can be saved, so that providing the scheme of high efficient and reliable.
It may be particularly preferably the region that diaphragm return mechanism is partially guided the shell by being formed as guide section,
Wherein, return flow line has elongation connect segment in the offset of its lateral edge diaphragm return mechanism towards diaphragm return mechanism,
So that the deviation post regardless of diaphragm return mechanism, the section and reflux of return flow line being located in diaphragm return mechanism
The section being located in shell in channel is operably connected.
The construction of this return flow line according to the present invention allows to not need hose, pipeline etc. to connect return flow line
The section being arranged in pull rod and return flow line be located at shell in section.Alternatively, inclined regardless of diaphragm return mechanism
How is shifting, so that the secure connection of the section extended in the latter and the fixation section extended in the housing of return flow line becomes
It may.Furthermore, it is possible to be arranged to, pull rod is operably coupled to elastic element, so that diaphragm quilt on the direction of induction stroke
Elasticity preloads.It is verified it is following be advantageously i.e. offer return force, by means of elastic element (fallings), be connected to and
The end of the opposite pull rod of diaphragm.Particularly advantageously, the offset of pull rod is restricted by means of fixed stop, so that drawing
Bar cannot it is mobile from induction stroke position be more than pressure stroke position or predetermined position, the predetermined position is from from induction stroke position
It sets fartherly more mobile than pressure stroke position.This have the advantage that in particular, in that, slowly occur for example due to gradually in excessive filling
In the case where the suction line for increasing ground contamination, the peak excursion of diaphragm can be limited.If membrane displacement is more than the point, return
The sum of power and the power of pressure significantly rise, and return flow line is opened.It has also been demonstrated that advantageously, operating room and storage room warp
By being connected to each other by the other closed return flow line of closure elements, wherein other closure elements are connected to pull rod, so as to
Can be mobile relative to the latter, allow other closure elements to go to open position from detent position and can be from opening
Position goes to detent position, and wherein other closure elements include power producing element and/or are operably coupled to the latter,
Other closure elements are locked in detent position by the power producing element, and the wherein pressure p in locker room2With operating room
In pressure p1Between pressure difference p2-p1When > a is true, wherein a is predetermined pressure, and closure elements in addition go to open position
And other return flow line is opened.
It can be set into, wherein other return flow line partly extends in diaphragm return mechanism, especially in pull rod
Middle extension, and wherein, return flow line in addition is preferably coupled to return flow line.
It is accordingly possible to ensure in the case where fluid loss in operating room, as long as under pressure in operating room
Predetermined value is fallen below, fluid can be filled it up with from storage room.
Particularly advantageously, according to the present invention, leakage compensation is directly incorporated in diaphragm return mechanism and can grasp
Same return flow line is connected to making, so that minimizing by the quantity in the hole of shell.Extend through each connection of shell with
The risk for lacking compactness is associated, there are when high pressure especially in operating room, so that shell as closed as possible is base
It is preferred in sheet.
Other feature and advantage of the invention can be obtained from being described below, wherein exemplary embodiment party of the invention
Formula will be illustrated in an illustrative manner using schematic diagram, without limiting the present invention.
Detailed description of the invention
Wen Zhong:
Fig. 1: the lateral cross-sectional views of an embodiment of diaphragm pump according to the present invention are shown；
Fig. 2: the lateral cross-sectional views of the embodiment of the diaphragm pump according to the present invention according to Fig. 1 are shown；
Fig. 3: the other lateral cross of the embodiment of the diaphragm pump according to the present invention according to Fig. 1 and Fig. 2 is shown
View；
Fig. 4: the lateral cross-sectional views of the alternative embodiments of diaphragm according to the present invention are shown；And
Fig. 5: the lateral cross-sectional views of the other embodiment of diaphragm pump according to the present invention are shown.
Specific embodiment
In Fig. 1, as an example, the embodiment of diaphragm pump 1 according to the present invention is shown, with 3 He of conveying chamber
Operating room 5.Conveying chamber 3 has press-in connection portion 7 and sucking interconnecting piece 9.Conveying chamber 3 is separated by means of diaphragm 11 and operating room 5.
Operating room 5 is filled with hydraulic fluid and is operably coupled to unshowned pressure generation device, so as to liquid
Fluid is pressed to apply oscillation pressure.
Diaphragm 11 has at least one membrane layer 13 and diaphragm core 15, and septation 11 can be gone to from pressure stroke position
Induction stroke position and pressure stroke position is gone to from induction stroke position.
As shown in Fig. 2, volume of the conveying chamber 3 in the pressure stroke position of diaphragm 11 is less than the appearance in induction stroke position
Product.The usual offset of diaphragm is determined or is identified by D.
Diaphragm 11 is otherwise attached to diaphragm return mechanism 17, and diaphragm return mechanism includes in the direction of induction stroke position
On on diaphragm 11 apply return force pull rod 19.
Further there is illustrated for keeping the storage room 21 of hydraulic fluid, wherein operating room 5 and storage room 21 by by means of
Closure elements 23 and closed return flow line 25 is connected to each other.
As from the figure 3, it may be seen that diaphragm core 15 and pull rod 19 are detachably connected from each other, wherein in diaphragm core 15 and pull rod 19
When connection, return flow line 25 is closed, also, when they are not connected with, return flow line 25 is opened, so that in Fig. 1 to shown in Fig. 3
In embodiments of the present invention, diaphragm core 15 and pull rod 19 are formed together closure elements 23, and wherein secure connection is by means of magnet
27 provide.
Magnet 27 is designed and configured to maintain the connection between diaphragm core 15 and pull rod 19, until being more than trigger force
Only.The connection for being formed together the diaphragm core 15 and pull rod 19 of closure elements is acted on by return force R first, which passes through elasticity
Element 39 acts on the end opposite with diaphragm of pull rod 19.Return force R is by following resistance or counteracting: the power D's of pressure is big
The discharge pressure F of trandfer fluid in small and conveying chamber 3.The power D of pressure acts on that one end towards diaphragm 11 of pull rod 19
On.Therefore, the sum of the power D and return force R of pressure are acted in the connection of diaphragm core 15 and pull rod 19.
In addition, showing in figs. 1 to 3, diaphragm return mechanism 17 is formed to draw by partly guidance by shell
Lead the region of section 35.In the guide section 35, return flow line 25 on its side towards diaphragm return mechanism 17 along every
The offset of film return mechanism 17 has elongation connect segment 37.
The elongation connect segment 37 is used for following purpose: regardless of the deviation post of diaphragm return mechanism 17, reflux is logical
The section being located in diaphragm return mechanism 17 in road 25 and the section of return flow line 25 being located in shell are operably connected, and make
Obtain the connection that can be generated at any time between operating room 3 and storage room 21.
Alternative embodiments of the invention are shown in Fig. 4, the embodiment and the embodiment according to Fig. 1 to Fig. 3
The difference is that may rely on expected breaking point 33 to connect diaphragm core 15 and pull rod 19.
Other embodiment is shown in Fig. 5.In embodiment shown in Fig. 5, leak compensation is increased.For
This purpose, operating room 5 and storage room 21 are connected to each other via by the other closed return flow line 43 of closure elements 41.In addition
Closure elements 41 be connected to pull rod 19, so as to mobile relative to the latter, allow other closure elements 41 from envelope
Closed position goes to open position and goes to detent position from open position.
Other closure elements 41 are operably coupled to power producing element 45, in embodiment according to Figure 5, the power
Producing element is the form of elastic element.Other closure elements 41 are locked in detent position and are transferred to open position,
So that the pressure p in locker room2With the pressure p in operating room1Between pressure difference p2-p1When > a is true, wherein a is predetermined
Pressure, return flow line 43 in addition are opened.
Feature of the invention described in description in front, claims and attached drawing, either individually or with
Any desired combination, is all important for realizing the present invention in the various embodiments of the present invention.
Claims (13)
1. a kind of diaphragm pump (1), the diaphragm pump has conveying chamber (3) and operating room (5), wherein the conveying chamber (3) includes
Press-in connection portion (7) and sucking interconnecting piece (9), and wherein the operating room can be filled with or be filled with hydraulic fluid
And it is operably coupled to pressure generation device, further includes diaphragm (11) to apply oscillation pressure to the hydraulic fluid,
With at least one membrane layer (13) and diaphragm core (15), the diaphragm by the conveying chamber (3) and the operating room (5) each other
It separates and induction stroke position can be gone to from pressure stroke position and go to the pressure from the induction stroke position
Stroke position, wherein volume of the conveying chamber (3) in the pressure stroke position of the diaphragm (11) is less than in the suction
Enter the volume of stroke position, and wherein the diaphragm (11) is operably connected to or can be operably coupled to diaphragm
Return mechanism (17), the diaphragm return mechanism include applying on the diaphragm (11) on the direction of the induction stroke position
Add or can apply the pull rod (19) of return force, and further include for keeping the storage room of the hydraulic fluid (21), and
Wherein the operating room (5) and the storage room (21) pass through by means of closure elements (23,23 ') closed return flow line (25)
It is connected to each other, wherein the closure elements (23,23 ') are operably coupled to the diaphragm core (15) and the diaphragm returns to dress
(17) are set, so that the return force and the pressure that the return force is resisted due to the Fluid pressure in the operating room (5)
Power acts on the closure elements (23,23 '), and wherein when being more than scheduled trigger force, is the closure elements
The sum of described return force and the power of the pressure on (23,23 '), the return flow line (25) are opened, septation core (15)
It is detachably connected from each other with pull rod (19), wherein when the diaphragm core (15) and the pull rod (19) connect, the reflux
Channel (25) closing, and when they are not connected with, the return flow line (25) is opened.
2. diaphragm pump according to claim 1, wherein it is super to be offset from the induction stroke position in the diaphragm (11)
In the case where crossing the pressure stroke position, the closure elements (23,23 ') and the return flow line (25) are opened.
3. diaphragm pump according to claim 1 or 2, wherein the return flow line (25) partly returns in the diaphragm
Extend in device (17).
4. the diaphragm pump according to one of preceding claims, wherein the closure elements (23,23 ') are by the diaphragm core
(15) it is formed.
5. the diaphragm pump according to one of preceding claims, wherein the return flow line (25) is partly in the diaphragm
Extend in the pull rod (19) of return mechanism (17).
6. the diaphragm pump according to one of preceding claims, wherein the closure elements (23,23 ') include magnet (27)
And/or it is operably coupled to the magnet, wherein the direction of magnetic force and intensity correspond to the scheduled trigger force, and
When more than the trigger force, the return flow line (25) is opened.
7. according to claim 1 to diaphragm pump described in one in 6, wherein the closure elements (23,23 ') include being used as
The expection breaking point (33) of protection is carried, the expected breaking point resists the trigger force, and disconnected when being more than the trigger force
It opens, and the return flow line (25) are opened.
8. the diaphragm pump according to one of preceding claims, wherein the operating room arranges in the housing, wherein described return
Circulation road (25) extends partially through the shell in the region of the pull rod (19).
9. diaphragm pump according to claim 8, wherein pass through shell to diaphragm return mechanism (17) guided portion
The region for being formed guide section (35), wherein the return flow line (25) are at it towards the diaphragm return mechanism (17)
Side on along the offset of the diaphragm return mechanism (17) there is elongation connect segment (37) so that no matter the diaphragm returns
How is the deviation post of device (17), the section of the return flow line (25) being located in the diaphragm return mechanism (17) and institute
The section being located in the shell for stating return flow line (25) is operably connected.
10. the diaphragm pump according to one of preceding claims, wherein the pull rod (19) is operably coupled to elastic member
Part (39), so that the diaphragm (11) is spring loaded during assembly on the direction of the induction stroke.
11. the diaphragm pump according to one of preceding claims, wherein the offset of the pull rod (19) passes through fixed stop
Limitation so that the pull rod (19) cannot it is mobile from the induction stroke position be more than the pressure stroke position or from the suction
Enter stroke position farther predetermined position more mobile than the pressure stroke position.
12. the diaphragm pump according to one of preceding claims, wherein the operating room (5) and the storage room (21) warp
By being connected to each other by other closure elements (41) closed return flow line (43), wherein the other closure elements (41)
The pull rod (19) are connected to, so as to it is mobile relative to the latter, so that the other closure elements (41) can be from envelope
Closed position goes to open position and goes to the detent position from the open position, and the wherein other closure elements
(41) include power producing element (45) and/or be operably coupled to the power producing element, the power producing element will be described
Other closure elements (41) are locked in the detent position, and the wherein pressure p in locker room2With the pressure in operating room
Power p1Between pressure difference p2-p1When > a is true, wherein a is predetermined pressure, and the other closure elements (21) go to described beat
Open position and the other return flow line (43) opening.
13. diaphragm pump according to claim 12, wherein the return flow line (43) in addition is partly in the diaphragm
Extend in return mechanism (17), especially extends in the pull rod (19), and the wherein other return flow line (43)
It is preferably coupled to the return flow line (25).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017122270.7 | 2017-09-26 | ||
| DE102017122270.7A DE102017122270B4 (en) | 2017-09-26 | 2017-09-26 | Diaphragm pump with a functionally reliable diaphragm position control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109555671A true CN109555671A (en) | 2019-04-02 |
| CN109555671B CN109555671B (en) | 2022-11-18 |
Family
ID=63557277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811125618.5A Active CN109555671B (en) | 2017-09-26 | 2018-09-26 | Diaphragm pump |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190093652A1 (en) |
| EP (1) | EP3460243B1 (en) |
| CN (1) | CN109555671B (en) |
| BR (1) | BR102018069627A2 (en) |
| DE (1) | DE102017122270B4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794954A (en) * | 2019-04-09 | 2020-10-20 | 卓越有限公司 | Diaphragm rupture monitoring |
| CN112682299A (en) * | 2019-10-17 | 2021-04-20 | 普罗名特有限责任公司 | Hydraulic drive diaphragm pump with magnetically coupled diaphragm assembly |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201601194D0 (en) * | 2016-01-22 | 2016-03-09 | Carlisle Fluid Tech Inc | Active surge chamber |
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|---|---|---|---|---|
| US3955901A (en) * | 1973-10-23 | 1976-05-11 | Hamilton Thomas W | Membrane pump |
| DE2333876B2 (en) * | 1973-07-03 | 1976-07-01 | Lewa Herbert Ott Kg, 7250 Leonberg | DIAPHRAGM PUMP |
| US4019837A (en) * | 1975-05-30 | 1977-04-26 | Graco Inc. | Pressure unloading apparatus for a diaphragm pump |
| US5246351A (en) * | 1991-12-17 | 1993-09-21 | Lews Herbert Ott Gmbh & Co. | Hydraulically driven diaphragm pump with diaphragm stroke limitation |
| US5472323A (en) * | 1993-01-07 | 1995-12-05 | Tdk Corporation | Movable magnet type pump |
| US6071089A (en) * | 1998-02-20 | 2000-06-06 | General Motors Corporation | Hydraulic diaphragm pump |
| CN103154517A (en) * | 2010-08-26 | 2013-06-12 | 卓越剂量技术有限公司 | Membrane pump having an inertially controlled leak extension valve |
| CN105209758A (en) * | 2013-05-16 | 2015-12-30 | 卓越有限公司 | Diaphragm pump having position control |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2695766A (en) * | 1953-03-03 | 1954-11-30 | Bridgeport Brass Co | Intermittently acting fluid valving device |
| DE1034030B (en) * | 1955-09-22 | 1958-07-10 | Reiners Walter Dr Ing | Diaphragm pump for non-lubricating and chemically aggressive fluids, especially for pest control in agriculture |
| US3421448A (en) * | 1967-01-11 | 1969-01-14 | Gen Motors Corp | Fluid pressure actuated reciprocable pump |
| US3769879A (en) * | 1971-12-09 | 1973-11-06 | A Lofquist | Self-compensating diaphragm pump |
| JP3549501B2 (en) * | 2001-07-23 | 2004-08-04 | カネキタ株式会社 | Air pulser and device using the air pulser |
-
2017
- 2017-09-26 DE DE102017122270.7A patent/DE102017122270B4/en active Active
-
2018
- 2018-09-11 EP EP18193642.8A patent/EP3460243B1/en active Active
- 2018-09-25 BR BR102018069627-0A patent/BR102018069627A2/en not_active IP Right Cessation
- 2018-09-26 CN CN201811125618.5A patent/CN109555671B/en active Active
- 2018-09-26 US US16/142,486 patent/US20190093652A1/en not_active Abandoned
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2333876B2 (en) * | 1973-07-03 | 1976-07-01 | Lewa Herbert Ott Kg, 7250 Leonberg | DIAPHRAGM PUMP |
| US3955901A (en) * | 1973-10-23 | 1976-05-11 | Hamilton Thomas W | Membrane pump |
| US4019837A (en) * | 1975-05-30 | 1977-04-26 | Graco Inc. | Pressure unloading apparatus for a diaphragm pump |
| US5246351A (en) * | 1991-12-17 | 1993-09-21 | Lews Herbert Ott Gmbh & Co. | Hydraulically driven diaphragm pump with diaphragm stroke limitation |
| US5472323A (en) * | 1993-01-07 | 1995-12-05 | Tdk Corporation | Movable magnet type pump |
| US6071089A (en) * | 1998-02-20 | 2000-06-06 | General Motors Corporation | Hydraulic diaphragm pump |
| CN103154517A (en) * | 2010-08-26 | 2013-06-12 | 卓越剂量技术有限公司 | Membrane pump having an inertially controlled leak extension valve |
| CN105209758A (en) * | 2013-05-16 | 2015-12-30 | 卓越有限公司 | Diaphragm pump having position control |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794954A (en) * | 2019-04-09 | 2020-10-20 | 卓越有限公司 | Diaphragm rupture monitoring |
| CN111794954B (en) * | 2019-04-09 | 2024-03-19 | 卓越有限公司 | Diaphragm unit for diaphragm pump and diaphragm pump comprising diaphragm unit |
| CN112682299A (en) * | 2019-10-17 | 2021-04-20 | 普罗名特有限责任公司 | Hydraulic drive diaphragm pump with magnetically coupled diaphragm assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109555671B (en) | 2022-11-18 |
| US20190093652A1 (en) | 2019-03-28 |
| BR102018069627A2 (en) | 2019-05-28 |
| DE102017122270A1 (en) | 2019-03-28 |
| DE102017122270B4 (en) | 2020-09-10 |
| EP3460243A1 (en) | 2019-03-27 |
| EP3460243B1 (en) | 2020-06-10 |
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