CN104245561B - Nil waste dispensing method and device for filling liquid container - Google Patents

Abstract

For the nil waste dispensing method to container (22) filling liquid, it at least uses the displacement pump (12) with rotor and stator at delivery exhibition booth (9) place of described fluid product, and described displacement pump (12) connects the groove (11) equipped with the liquid that will pour in described container (22).

Description

Nil waste dispensing method and device for filling liquid container

Technical field

The present invention relates to a kind of method, the method is for obtaining containing quantitative liquid or the nil waste of the container of liquid mixture Produce.The invention still further relates to the dosing mechanism operated according to described method and the machine using this device.Specifically, the present invention Relate to quantitative liquid or liquid mixture described in the accurate fill of container.

Background technology

Known when the liquid determined to container filling or liquid mixture, accurate relative to the volume of fluid injecting container Really there is different tolerance levels in property.

It is also known that in some field of prior art, such as but not limited to, in field of medicaments, it is desirable to tolerance levels The least.

It is also known that for much more expensive liquid, special or dedicated liquid, the most dangerous, poisonous, harmful or contaminative For liquid, it is necessary to fill tolerance is limited to extremely low value, according to the kind of liquid of institute's fill, it is also possible to reach 1-10's ‰ Coefficient.

" liquid " alleged everywhere in description should be understood to both to refer to proper liquid substance (i.e. environment Keep himself volume under the conditions of temperature and pressure, but tend to deform to adapt to the liquid substance of container shapes), or also may be used To refer to gel or the like (i.e. there is certain viscosity thus can use appropriate device to shift).

Use in known bulking system, and not always can reach above-mentioned precision, and even reaching when the most not Seriality and the homeostasis of described precision can be kept；Due to not in accordance with tolerance, this always can generate waste.

This type of waste not only brings yield to reduce, cost increase, also to container reprocessing content liquid needed for providing Process throw into question.

Additionally, for dangerous, poisonous, harmful or contaminative liquid, the reprocessing of container result in Cost Problems, peace Full problem and generally product and environment are all polluted problem.

Additionally, also some liquid needs lasting protection in transfer process, in order to avoid some within the bounds of possibility Pollutant.

Therefore, an object of the present invention is, perfect one at least can be such as the mankind, animal or plant The method avoiding waste generation in the costliness being administered or danger, poisonous, harmful or contaminative liquid.

Self-evident, described product, in the case of single use, it is also possible to for science and/or commercial Application.

A further object of the present invention is: obtain a kind of device that can apply described method.

One relevant purpose of the present invention is, improves a kind of being applicable to and performs on the machine comprising described device and control Make the computer program of described method,

A further object of the present invention is: obtain a kind of machine for container filling, and this machine uses according to the present invention The described device that described method operates and managed by associated computer program.

Applicant designs, tests and implement the present invention, to overcome the defect of prior art, and reaches above-mentioned and other mesh And beneficial effect.

Summary of the invention

The present invention is stated by independent claims and characterizes, and subclaims describes the present invention simultaneously or it is main Will other features of variant of invention thinking.

Based on object above, the method for the present invention provides: for by the station of liquid delivery to accurate fill dosing container At platform, using accurate volumetric pump, described accurate volumetric pump is connected to groove or other are for accommodating the liquid that will introduce described container In the appropriate containers of body.

Described displacement pump type is: includes at least one rotor and the stator that is optionally connected, therein defining pump chamber, described Pump chamber progressively determines from entrance or suction tube to the suction of the liquid of outlet or delivery tube.

In described displacement pump field, define delivery of the present invention and start " zero " Angle Position or point, its with at least The quantitative Angle Position of one rotor is relevant, by described " zero " point, the precision needed for can controlling to deliver amount of liquid thus obtaining Dosage.

Especially, in the product of medical product or the evil requiring protection against polluter, the present invention preferably makes Use peristaltic pump.

But, use displacement pump, such as gear pump, lobe pump or variable chamber pump, within falling within the thinking of the present invention.

When peristaltic pump, it is typically provided with rotor, and this rotor is provided with one or more rollers, turning with described roller Dynamic, continuously and block elastic tube between rotor and stator progressively, in described elastic tube, there are the liquid for pumping, and described bullet Property pipe plays the effect of pump chamber.Continuous and the progressive action of described roller makes liquid advance.

During the component that peristaltic pump is generally used for needing to prevent pump contacts with pumping liquid, wherein said liquid, The most in the present invention, danger, toxicity, harmfulness and contaminative it are likely to be of.Described elastic tube can be with different known Material is made.

Under normal circumstances, displacement pump and especially peristaltic pump have discontinuous precision under various factors.Described do not connect Continuous property is especially relevant with the normal discontinuous running (or so-called " start-stop ") of pump, and wherein each run all associates and passs completely The simple subprogram sent.The decision fact of this discontinuous delivery is: the amount of fluid delivered during an operating cycle is just It is the quantity (i.e. delivering required amount of fluid) required for container filling.

Various factors appeared in the discontinuous delivery process of peristaltic pump includes: the size of elastic tube and thickness；Tubulation Material；One and its previous pump chamber size rotated between obstruction roller；Downtime；Number of cycles in unit interval；Defeated The characteristic of the liquid in sending.

Applicant, by experiment, especially in the case of using peristaltic pump, demonstrates in discontinuous delivery (" start-stop ") When, the uncertainty of this delivery total amount of liquid can be reduced to the lowest value, and allow model in most stringent of tolerance Within enclosing.

Applicant also demonstrates: if starting " zero " point relative to described pipe to the delivery defining rotor, can will deliver liquid The scale of construction controls at tight tolerance, in the range of even 2-5 ‰.

In another variant of the present invention, applicant also solves in liquid delivery, owing to loop ends delivers Instantaneous (after " stopping ") and make displacement pump rotor return to delivery starting required rotation of " zero " point (" rising ") and the extra delivery that determines The problem of angular displacement.

In order to overcome these problems, and eliminate described instantaneous impact, used it has been found that can provide to be arranged on The shutoff valve in outlet downstream of displacement pump, be preferably but not limited to three-way valve, the liquid of similar or suitable optional passage Body closure member.

In a variant, described valve is placed very close at the final delivery member that coordinates with container.

When the rotor of displacement pump reach required deliver ending corner position (" stopping ") time, described valve dam be typically passed to described in The described liquid stream of whole container, to be transferred to recirculation branch, such as, is re-introduced into initial groove or suitable by the liquid dammed In container.

The present invention disclosure satisfy that the quantity dosage scope from 0.01ml to 1000ml, and meets strict even 2-5 ‰ The margin of tolerance.

It should be pointed out that, that the driving of heretofore described valve must account for running and the required time of valve self, thus Accurately can dam in the tight tolerances of required delivery volume.

Should also be noted that the method and relevant apparatus thereof allow to set up and product type and other possible factors (such as temperature The drift of degree, component, once " stop " and subsequent time between " rising ", etc.) data base that is correlated with, the foundation of described data base Including statistics form and pointwise form.

It means that in delivering for the first time, described first time delivers the new product i.e. relating to the most having delivered, and also relates to And new initial after stopping to certain, can reach the delivery value in the required margin of tolerance because data base provide required Regulation and control parameter.

Use this method and relevant apparatus, can be by special service in the automatic displacement pump of container, fill is several simultaneously Container, each described pump in described groove downstream connects its special three-way valve, and without any independent pre-school of the prior art Accurate.

In the present invention, can there is single delivery platform, it has independent upstream and measures platform, is used for measuring container skin Weight.

In a kind of variant, this delivery platform can be connected to measure the device of container tare weight, or is combined into it Integrally.

But, due to the drifting problem that may not comprise in data base, displacement pump possibly cannot keep delivering perseverance in time Fixed；Applicant, it is contemplated that this problem, in a kind of variant, delivers platform downstream part and also has an independent platform, be used for surveying The gross weight of the container that amount is filled.

Therefore, in a modification of the present invention variant form, it is provided that use processing system to compare and need to pour in container The theory of particular liquid amount of liquid or expected value and the reality of this particular liquid or true value quantity, the described theory pouring into container Or expected value is stored in the proper data storehouse that processor is connected.

Described compare derived from tare weight and fill after gross weight measure.

The present invention provides: use this comparative result that displacement pump is carried out closed loop feedback control.

Especially, if this relatively in, the substantial amount poured into be less than theoretical amount, then the delivery of regulation and control system starts " zero " some related angle position is moved relative to rotor rotation direction reversed.Vice versa, if substantial amount is more than theoretical amount, then delivers Start " zero " some related angle position to move forward relative to rotor rotation direction.

According to minor function, represent the reorientation angle value from " stopping " point to " zero " or starting point, or the compensation used with a Angular displacement:

Wherein:

Liquid unit quantity corresponding to each angular unit of q=" zero " some traveling angle position or mark；

G=liquid specific gravity；

Individual variation value between delivery theory of liquid quantity and exact amount that d=records in controlling to measure.

In a variant improved, can be incorporated at least one or more in the algorithm with minor function:

T=temperature of liquid；

T=ambient temperature；

The correlative factor of D=component drift.

In some execution pattern, for displacement pump in the first time startup paused or after replacement of products, owing to quantitatively passing Sending the information in the data base a little connected, processor can limit each pump according to the fluid product type that will deliver Individually " zero " point.

In a variant, the present invention provides: when needs update flow velocity, and " zero " point keeps fixing, and required liquid The delivery ending corner position of the scale of construction changes.

In the thinking of the present invention, " zero " point and delivery can be terminated by the control command system of delivery cycle when necessary Point is interfered simultaneously.

Accompanying drawing explanation

Below will be by combining accompanying drawing, by way of non-limiting example, a kind of possible preferred implementation is entered Line description, to understand the above-mentioned and other feature of the explanation present invention.

Fig. 1 is the partial schematic diagram of a kind of machine for liquid accurately pours into container, and this machine includes according to this The device that bright method operates.

Fig. 2 is the schematic diagram of the device that a kind of the method according to the invention operates.

Fig. 3 is the local detail enlarged diagram of Fig. 2 shown device.

Fig. 4 is the general flowchart that a kind of embodiment of the method for the present invention is.

In order to help to understand, in the conceived case, the same general element in accompanying drawing is employed like number.Should Understand, the element in a kind of embodiment and feature, can be incorporated to easily in other embodiments, and without explaining further Bright.

Detailed description of the invention

Example is that it has dosing mechanism for the machine 20 with the liquid multiple container of accurate fill 22 as shown in drawings 10(Fig. 2), the first platform 24 and the second platform 26；First platform 24 in container 22 fill step upstream (only to time sequencing Speech) work, it is used for measuring container 22 tare weight；Second platform 26 works in dosing mechanism 10 downstream, for after container 22 fill Measure its gross weight.

In a kind of variant, the first platform 24 is located at the upper of dosing mechanism 10 independently and with having physical separation Trip, the most as shown in Figure 1.In other variant, the first platform 24 is associated with described dosing mechanism 10 or is combined into one Body.

Machine 20 is also connected with or includes electronic information processor 28 or similar process device or controls command device, described place Reason device 28 is at least commanding and controlling dosing mechanism 10.Described processor 28 can be equipped with according to the kind of liquid that need to deliver Prestoring the electronic databank of data, this data base can realize by the pointwise information obtained.

Dosing mechanism 10 is included in delivery platform 19, and with support and location will the work platforms of container 22 of fill The bottom of 30 is associated, it is also possible to be independently arranged.

According to a kind of variant of the present invention, machine 20 is provided with device 25, for each individual container 22 of single identification.

Dosing mechanism 10 (Fig. 2) includes and the liquid of one or more displacement pumps (for peristaltic pump 12 in the case of this) hydraulic connecting Body groove 11.In the case of as shown in this example, illustrate 4 peristaltic pumps 12, respectively for the accurate fill of its container 22 being associated. But, due to the always 1:1 of the ratio between pump and container, therefore, the number of peristaltic pump 12 can be as needing fill simultaneously The function of container and change, thus meet Production requirement.

The upstream of each peristaltic pump 12 is all connected with the first entrance branch 14 for liquid, and this arm is by groove 11 and peristaltic pump Import or the suction tube of 12 link together；Each peristaltic pump 12 delivery port in downstream or exit connect delivery member 16, such as accurate nozzle, it is adaptable to required amount of fluid is poured in associated vessel 22 according to known method.

In the present invention, the downstream of each peristaltic pump 12 is provided with three-way valve, is connected with delivery member 16.From each three-way valve The second recirculation branch 15 is stretched out, these branch 15 connectivity slot 11 or other appropriate containers in 13.

According to the instruction received from processor 28, three-way valve 13 be suitable to take at least one first deliver running status and One the second recirculation running status.The two state is relevant to the pointwise Angle Position of peristaltic pump 12.

Delivering in running status first, three-way valve 13 allows liquid to flow out from peristaltic pump 12, through delivery member 16, Pour in the container 22 of lower section.

In the second recirculation running status, the liquid stream from peristaltic pump 12 is intercepted and is transferred to the second recirculation completely In branch 15, then it is introduced back into groove 11 from there.

The schematic diagram of Fig. 3 illustrates: how the three-way valve 13 that one of peristaltic pump 12 in Fig. 2 is connected controls liquid is passed Send.

Peristaltic pump 12 as depicted conventionally comprises rotor 42, and equipped with multiple rollers 44 on rotor 42, described roller 44 blocks Suitable pipe 46 so that the liquid from groove 11 advances.In a variant, the number of roller 44 more has between 4-10 Between profit, preferably 5-8.In the case, rotor 42 is set to rotate counterclockwise.Letter " A " represents the delivery of fill circulation The theoretical Angle Position (" stopping ") terminated, and digital " zero " represent the theory delivering beginning " zero " Angle Position (" rising ").

It is true that the amount of fluid delivered as required, the excursion of rotational angle can be that the several years are to one or many Individual round angle.

Before one delivery cycle terminates (position of point " A "-stop) and another circulation not yet starts, of the present invention compacted Dynamic pump 12 must make the Angle Position of rotor 42 recover to " zero " point and i.e. deliver beginning, rises from there and again determines and need to pass To the rotation of rotor 42, thus deliver required liquid volume.

Rotor 42 is driven by the power set being controlled in appropriate location, and the power set described in this example are that position passes The stepper motor 48 that sensor or encoder 50 are connected.The operation of stepper motor 48 commanded by processor 28, and its instruction is also from position Put sensor or the function of signal that encoder 50 receives.

Three-way valve 13 includes actuator 17, starts under control of the processor 28.Actuator 17 determines that three-way valve 13 is internal Closure member or the required location of obstruction piece (not showing in accompanying drawing), thus three-way valve 13 can optionally be taked at least described First delivers running status or the second recirculation running status.

Especially, due to position sensor or the existence of encoder 50, electronic signal can be transmitted to processor 28, described Electronic signal is for identifying the rotor 42 position when completing Angle Position " A " arriving fill circulation stopping after fill angular displacement And time instant.

When processor 28 receives the signal showing rotor 42 approach angle position " A ", it is contemplated that postpone, processor 28 to Three-way valve 13 sends enabled instruction, and when thus arriving on Angle Position " A ", three-way valve 13 is in the second recirculation operating state.

This makes the liquid volume pumped out be transferred into the second recirculation branch 15 leading to groove 11.

Thus one, from delivering end point " A " (or " stopping ") to delivering beginning Angle Position " zero " angular displacement of (or " ") Middle pumped out liquid volume, is recycled into groove 11, and does not introduce container 22, therefore, container 22 only can receive with The correct amount of liquid that operating cycle is associated.

Keep the second recirculation operating state, until processor 28 receive represent rotor 42 arrive Angle Position " zero " and letter Number, stop herein, prepare to start to deliver next time.Thus one, three-way valve 13 turns again to the first delivery running status.

Arrow FB in Fig. 3 indicates entry into the electronic signal of processor 28, and this signal is for peristaltic pump 12(and optional Ground, actuator 17) running closed loop feedback control.

Signal shown in arrow FB is included in a paced work circulation, needs to be delivered to the liquid volume reason of container 22 Opinion or expected value (such as having previously been stored in the data base connecting processor 28) and liquid volume true being delivered to container 22 The relevant information of the comparison in difference between reality or actual value.Described the latter (i.e. true or actual value) is to each container 22 institute Each weight measurement carried out is derived, and described measurement betides the upstream and downstream of described fill step, at first stop Platform 24 measures tare weight, the gross weight after the fill of each container 22 measured by the second platform 26.

The value of described comparison in difference result gained, can transfer with tolerance threshold (in the such as data base of processor 28 Preset value, thereby increases and it is possible to change with the kind of liquid that need to deliver) compare.

Comparison in difference result received by signal according to arrow FB, and alternatively compared with described tolerance threshold value After, processor 28, by commander's stepper motor 48, changes as requested and delivers beginning Angle Position " zero ", thus determine peristaltic pump 12 Running.

In a kind of variant, in that case it can be decided that or the delivery end position of the required amount of liquid of regulation simultaneously, thus determine Or the position that regulation shutoff valve comes into operation.

Change " zero " is put and/or is delivered the purpose of end point Angle Position and is, in follow-up delivery cycle, reduce (if Fail to eliminate) difference between liquid volume theoretical value and the liquid delivery actual value that will deliver.This reset is dammed preferably It is implemented in a dosage and next time between dosage.In other words, can be once in multiple times in the most total fill circulation, with in advance If or predeterminable circulation rhythm (cadence) (i.e. one stationary digital), continuously checking this reorientate.

Start reorientating peristaltic pump 12, in order to optimize the circulation time of dosing mechanism 10, and order will be used for joining Pressure on the product of amount is kept as the lowest.

It should be pointed out that, that processor 28 is all right in order to eliminate possible drifting problem or the problem relevant to variations in temperature Interfere when command signal startup and positioning actuator 17.

Especially, illustrating the sequence of steps of method in one embodiment of the present invention in the flow chart of Fig. 4, it is One non-limiting example of scope.

In this example, flow chart provides first step (module 60), and it initializes control system, it is common that by processor 28, such as, processor 28 loads the data of cycle of operation and information and may be pre-for position the rotor 42 of peristaltic pump 12 Store data.

Subsequently, it is provided that second step (module 62), wherein by from position sensor or the signal of encoder 50, rotor 42 deliverys reaching peristaltic pump 12 start Angle Position " zero ".

Then, it is provided that third step (module 64), wherein processor 28 loads all available informations and parameter, such as dosage The required quantity of fluid product kind used and required precision.

Subsequently, it is provided that the 4th step (module 66), wherein, processor 28 perform program, the letter represented according to arrow FB Number relevant information and alternatively according in view of the data base of the basis weight products data archival in dosage, calibrate peristaltic pump 12 Feedback.This process can set and calibrate specific products, such as, delivers ending corner position " A ", liquid number for dosage Amount, required precision.

After calibration terminates, it is provided that the 5th step (module 68), wherein started three-way valve 13 by the instruction of processor 28, and will It is positioned at the first delivery running status.

Then, it is provided that the 6th step (module 70), wherein processor 28 is according to the signal represented by arrow FB, calculates and wriggles What the rotor 42 of pump 12 was had to carry out may new rotational value.

Obviously, in the newest work session, the first fill circulation is not relevant to the feedback signal of particular job dialogue Connection.Therefore, in the case of the first fill circulation, the 6th step is also possible to according in view of the basis weight products dependency number in dosage Perform according to the staqtistical data base of archives, or can not perform.On the contrary, each follow-up fill circulation after the first circulation can To utilize the feedback control of identical work session in the 6th step.

Subsequently, it is provided that the 7th step (module 72), wherein the signal to be transmitted such as processor 28 to start to be entered by peristaltic pump 12 Row dosage.In the 8th step (module 74) subsequently, affect dosage, until arriving with necessary rotation of the rotor 42 of peristaltic pump 12 Reach delivery ending corner position " A ".Now, the 9th step (module 76), start three-way valve 13, be located at the second recirculation shape Under state.Finally, in the tenth step (module 78), the rotor 42 of peristaltic pump 12 is mobile to delivering from delivering ending corner position " A " Start Angle Position " zero ".Then, as shown by arrows, marching to module 68 from module 78, this cycle of operation is again from the 5th step Suddenly (i.e. reorientate three-way valve 13) and start and perform until the ending of particular job dialogue.

The method of present invention general type as shown in Figure 4, when performing computer program product on computers, can be by directly The part of the Software Coding carrying the described computer program product in digital computer memory (for processor 28 in this example) is come Perform.

Claims (15)

1. for the nil waste dispensing method of container (22) filling liquid, it provides: deliver platform (19) place at fluid product, At least one is used to have a displacement pump of rotor and stator (12), this displacement pump and the liquid that described container (22) will be introduced Groove (11) is associated；Described method includes: the step of each container of fill (22), there is defined passing of described displacement pump (12) Send beginning " zero " Angle Position and the delivery ending corner position (A) of required amount of liquid of the function as described " zero " Angle Position, institute The delivery ending corner position (A) stating " zero " Angle Position and/or required amount of liquid is used for reorientating described " zero " Angle Position And/or deliver the control controlling command device and the regulation of ending corner position (A)；Described method is by means of to being delivered to displacement pump (12) liquid in outlet downstream carries out selectivity and dams, and runs through following of described delivery ending corner position (A) period by definition Ring terminates to deliver instantaneous, controls required liquid delivery amount.

Method the most according to claim 1, it is characterised in that after described loop ends delivery is instantaneous, according to by described appearance The rotor of long-pending pump (12) takes described delivery to start to rotate necessary to " zero " Angle Position to determine one section of extra position, delivery angle Move, wherein, when arriving described delivery ending corner position (A) under the effect at the rotor of described displacement pump (12), in described wink In time, dammed by the liquid stream guiding described container (22) along described additional angular displacement, described so that this liquid stream is transferred to completely In groove (11).

Method the most according to claim 1 and 2, it is characterised in that described method after the angular displacement completing required fill, Identify that described displacement pump (12) arrives position and the instantaneous moment of described delivery ending corner position (A), and described delivery is terminated The liquid volume that Angle Position (A) to described delivery starts to pump out between " zero " Angle Position is recycled in described groove (11) completely.

Method the most according to claim 1 and 2, it is characterised in that at the upstream and downstream of described fill step, to each Described container (22) carries out independent check weighing, in order to calculate the true or actual of the liquid volume delivered in described container (22) Value, and to needing deliver theory or the expected value of the liquid volume in described container (22) and deliver in described container (22) The true or actual value of liquid volume carry out comparison in difference, and start " zero " Angle Position by changing or recovering described delivery And/or the described delivery ending corner position (A) of required amount of liquid, by comprising the relevant letter of described comparison in difference in closed loop feedback The feedback signal (FB) of breath, regulates the running of described displacement pump (12).

Method the most according to claim 4, it is characterised in that regulate described displacement pump by described feedback signal (FB) (12) selectivity of the liquid of outlet downstream delivery dams.

Method the most according to claim 4, it is characterised in that including: make the rotor of described displacement pump (12) arrive described Delivery starts the step of " zero " Angle Position；There is provided about will be used for the fluid product type of dosage and/or the product of dosage will be used for The information of product and the step of parameter；Based on described feedback signal (FB), the feedback calibration step to described displacement pump (12)；Start The step of the sending state of described product；Based on described feedback signal (FB), calculating must be performed by described displacement pump (12) The step of possible new rotational value；Start the rotor of described displacement pump (12) to carry out fluid product dosage, until it reaches described Deliver the step of ending corner position (A)；Once arrive described delivery ending corner position (A), start recycled liquid product immediately The step of state；And, make the rotor of described displacement pump (12) be moved again to described from described delivery ending corner position (A) Delivery starts the step of " zero " Angle Position.

Method the most according to claim 6, it is characterised in that the described feedback calibration step base to described displacement pump (12) In described feedback signal (FB) and based on statistical data storehouse.

8. for the nil waste dosing mechanism (10) of container (22) filling liquid, at least including and one or more displacement pumps (12) groove equipped with liquid (11) of hydraulic connecting, it is characterised in that at least one the displacement pump quilt in described displacement pump (12) It is configured that restriction one delivery starts the rotor of " zero " Angle Position, this position and described displacement pump (12) relative to rotor and stator Between the predetermined angle position of liquid pump chamber be associated, and limit the delivery ending corner position (A) of required amount of liquid, and provide One section unrelated with liquid pours into described container (22) additionally delivers displacement；Described dosing mechanism (10) connects to be had for regulating Described " zero " Angle Position and/or control, test and the command device of described delivery ending corner position (A).

Dosing mechanism the most according to claim 8 (10), it is characterised in that the upstream of described at least one displacement pump (12) Connecting first inlet leg (14) of liquid, downstream connects delivery member (16)；Described first inlet leg (14) connects described Groove (11) and the import of described displacement pump (12), described delivery member (16) is applicable to required amount of liquid is introduced the appearance being associated Device (22), it is characterised in that the downstream of described at least one displacement pump (12) is provided with and can carry out the liquid of channel selecting and dam dress Put (13)；Described liquid cut-off equipment (13) connects to be had: pass described in liquid for receiving from described first inlet leg (14) Send component (16), connect described liquid cut-off equipment (13) and lead to the second recirculation arm (15) of described groove (11)；Described Liquid cut-off equipment (13) is associated with the end of the delivery of required amount of liquid.

Dosing mechanism (10) the most according to claim 8 or claim 9, it is characterised in that described at least one displacement pump (12) is Peristaltic pump.

11. dosing mechanisms according to claim 9 (10), it is characterised in that described dosing mechanism (10) is connected to adjust Saving the processing means (28) of described liquid cut-off equipment (13), the most described liquid cut-off equipment (13) at least can take first to pass Sending operating state and the second recirculation operating state, wherein, described first delivers under operating state, described liquid cut-off equipment (13) allow from described displacement pump (12) liquid out by described delivery member (16), with container described in fill (22)；? Under described second recirculation operating state, the liquid stream from described displacement pump (12) is dammed and is proceeded to described second completely and followed Ring arm (15), and it is re-introduced into described groove (11) from there.

12. dosing mechanisms according to claim 11 (10), it is characterised in that come from a paced work by use and follow In ring, will pour into that the liquid volume of described container (22) is theoretical or expected value and the liquid volume delivered into described container (22) True or actual value between the feedback signal (FB) of comparison in difference, regulate described liquid cut-off equipment (13).

13. are used for using liquid or the machine of the multiple container of the accurate fill of liquid mixture (22), including such as claim 8-12 According to any one of dosing mechanism (10).

14. machines according to claim 13, it is characterised in that it includes the first platform (24) and the second platform (26)； The early-stage work on container (22) fill step at least chronological order of described first platform (24), is used for measuring described container (22) tare weight, described second platform (26) works in described dosing mechanism (10) downstream, for after container described in fill (22) Measure its gross weight, in order to utilize described tare weight value to calculate difference, determine the actual amount of liquid poured in described container (22)；Described Machine also includes processing means (28), at least based on the data being stored in advance in suitable electronic databank and from institute State the first platform (24) and the pointwise information of described second platform (26), command and control described dosing mechanism (10), described pre- The information first stored is by the function of the kind of liquid delivered.

15. are used for using liquid or the machine of the multiple container of the accurate fill of liquid mixture (22), including such as claim 9,11 Or the dosing mechanism (10) described in 12,

Described machine includes the first platform (24) and the second platform (26)；Described first platform (24) is in container (22) fill step At least early-stage work on chronological order, is used for measuring described container (22) tare weight, and described second platform (26) is in described dosage Device (10) downstream works, for measuring its gross weight afterwards at container described in fill (22), in order to utilize described tare weight value to calculate poor Value, determines the actual amount of liquid poured in described container (22)；Described machine also includes processing means (28), at least based on It is stored in advance in the data in suitable electronic databank and from described first platform (24) and described second platform (26) Pointwise information, commands and controls described dosing mechanism (10), described in the information that prestores be by the letter of the kind of liquid delivered Number；

Described processing means (28) is configured with a feedback signal (FB) and regulates the running of described displacement pump (12), described Feedback signal (FB) comes from theory or the expectation of the liquid volume that will pour into described container (22) in a certain amount of cycle of operation Comparison in difference between value and the true or actual value of the liquid volume that delivers described container (22), wherein said theory or phase Prestige value is available from described first platform (24), and described true or actual value fills available from described second platform (26), wherein said process Put (28) for being regulated the running of described liquid cut-off equipment (13) by described signal (FB).