Control method and clamp control device for clamping tube type measuring fixed amount
Technical field
Present invention relates generally to fluid metering technical field, a kind of control method for clamping tube type measuring fixed amount is refered in particular to
And clamp control device.
Background technology
With the development of technology, many special industries are such as given birth to the precision of metering and the requirement more and more higher of cleanliness factor
Thing pharmaceutical industry, medical industry, chemical industry etc..At present, when carrying out accurate measurement to fluid, typically using plunger pump, compacted
Dynamic pump coordinates pipeline clamping control to carry out fluid quantitative.
Existing pinch valve, referring to shown in Fig. 1 and Fig. 2, clamps and unclamps flexible pipe 3 using supervisor's chuck 1, play logical
Disconnected effect, coordinates between supervisor's chuck 1 and clamp base 2.During supervisor's chuck 1 unclamps and clamped, in the pipeline of flexible pipe 3
Volume can change;When clamping, the pipe content of flexible pipe 3 product reduces so that unnecessary fluid can be toward race outside pipeline, when filling
Easily produce weeping;Volume during release in the pipeline of flexible pipe 3 becomes big, resorption is easily produced, so as to influence filling precision.
The content of the invention
The technical problem to be solved in the present invention is that:The technical problem existed for prior art, the present invention provides one
Plant the control method and clamp control device for clamping tube type measuring fixed amount that principle is simple, with low cost, precision is high.
In order to solve the above technical problems, the present invention uses following technical scheme:
A kind of control method for clamping tube type measuring fixed amount, sets two groups of bites outside fluid media (medium) pipe, in quantitative clamping
In control process, when one group of nip points is in grip fluid medium tube state, another group of nip points are in releasing orientation;Work as place
When the bite of clamped condition switchs to releasing orientation, another group of bite switchs to clamped condition so that in whole clamp process
In, the volume of pipeline does not change or volume becomes big.
It is used as the further improvement of the inventive method:Bite described in every group includes more than one hold assembly.
It is used as the further improvement of the inventive method:The equal fluid medium pipe of bite described in every group has precompression.
It is used as the further improvement of the inventive method:Multigroup bite using by equidirectional linkage by the way of, or
By the way of being linked by different directions.
The present invention further provides a kind of clamp control device, including main folder tube head for being clamped to flexible pipe and auxiliary
Clamp head is helped, in the control process of measuring fixed amount, when the main folder tube head compresses the pipeline of flexible pipe, the auxiliary clamp head pine
Open pipe road;When the main folder tube head unclamps the pipeline of flexible pipe, the auxiliary clamp head clamping pipeline.
It is used as the further improvement of apparatus of the present invention:The main folder tube head and additional lock tube head may be contained within the side of flexible pipe
Face.
It is used as the further improvement of apparatus of the present invention:The main folder tube head and auxiliary clamp head carry out precompressed to flexible pipe.
It is used as the further improvement of apparatus of the present invention:The main folder tube head uses what is linked by equidirectional with auxiliary clamp head
Mode, or by the way of by different directions linkage.
It is used as the further improvement of apparatus of the present invention:More than one main folder body, institute are provided with the main folder tube head
Additional lock tube head is stated for more than one precompressed clamp body.
It is used as the further improvement of apparatus of the present invention:The main folder body and two precompressed clamp bodies are arranged on clamp power
In mechanism, one rigid body of main folder body and precompressed clamp the body formation acts Complete Synchronization.
Compared with prior art, the advantage of the invention is that:The control method for clamping tube type measuring fixed amount of the present invention
And clamp control device, principle is simple, with low cost, precision is high, ensure that pinch valve pipe content product is constant, will not produce
Violent instantaneous variation, thus weeping is effectively prevented, while improving filling accuracy.
Brief description of the drawings
Fig. 1 is schematic diagram before prior art clamp.
Schematic diagram when Fig. 2 is prior art clamp.
Fig. 3 is clamp control device of the present invention bilateral pre- pressure pipe schematic diagram in specific embodiment 1.
Fig. 4 is clamp control device of the present invention schematic diagram during clamp in specific embodiment 1.
Fig. 5 is clamp control device of the present invention unilateral pre- pressure pipe schematic diagram in specific embodiment 1.
Fig. 6 is clamp control device of the present invention pinch valve front view in specific embodiment 2.
Fig. 7 is Fig. 6 left view.
Fig. 8 is present invention schematic diagram during pinch valve clamp in specific embodiment 2.
Fig. 9 is the clamp head schematic diagram of present invention pinch valve in specific embodiment 2.
Figure 10 is present invention pinch valve schematic diagram in specific embodiment 3.
Figure 11 is present invention pinch valve schematic diagram in specific embodiment 4.
Figure 12 is present invention schematic diagram during pinch valve clamp in specific embodiment 4.
Figure 13 is the clamp head schematic diagram of present invention pinch valve in specific embodiment 4.
Marginal data:
1st, main folder tube head;2nd, fixed seat;3rd, flexible pipe;4th, additional lock tube head;11st, main folder body;12nd, precompressed clamp body;13rd, clamp
Actuating unit;21st, limited block.
Embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
A kind of control method for clamping tube type measuring fixed amount of the present invention, sets two clampings outside fluid media (medium) pipe
Point, it is quantitative clamping control process in, when a nip points are in grip fluid medium tube state, another nip points in
Releasing orientation;When the bite in clamped condition switchs to releasing orientation, another bite switchs to clamped condition so that
During whole clamp, the volume of pipeline does not change or volume becomes big.
Embodiment 1:As shown in Fig. 3~Fig. 5, the present invention further provides a kind of clamp control device, for including main folder
Tube head 1 and additional lock tube head 4, main folder tube head 1 are installed in fixed seat 2, and main folder tube head 1 and additional lock tube head 4 may be contained within soft
The side of pipe 3, for being clamped to flexible pipe 3.In the control process of measuring fixed amount, when main folder tube head 1 compresses the pipe of flexible pipe 3
Lu Shi, auxiliary clamp first 4 then unclamps pipeline, and when main folder tube head 1 unclamps the pipeline of flexible pipe 3, auxiliary clamp first 4 then clamps pipeline;It is logical
Cross above-mentioned control so that during whole clamp, the volume of pipeline does not change.
In the preferred embodiment, main folder tube head 1 and auxiliary clamp first 4 carry out precompressed to flexible pipe 3, with certain precompressed
Power.
In concrete application example, by the way of main folder tube head 1 can be linked with auxiliary clamp first 4 using pressing equidirectional,
Can according to actual needs, by the way of being linked by different directions.
Embodiment 2:As shown in figs. 6-9, clamp control device of the invention in the present embodiment includes main folder tube head 1
With fixed seat 2, main folder tube head 1 is arranged in fixed seat 2, main folder body 11 is provided with main folder tube head 1, additional lock tube head 4 is
Two precompressed clamp bodies 12, main folder body 11 and two precompressed clamp bodies 12 are arranged on clamp actuating unit 13, and are taken tiltedly
The mode on opposite arranges that main folder body 11 and precompressed clamp body 12 are a rigid body, act Complete Synchronization;Clamp actuating unit
13 are arranged in fixed seat 2.
As preferred embodiment, the limited block 21 for preventing that the stress of flexible pipe 3 from retreating, limited block 21 are provided with fixed seat 2
It is arranged in the right opposite of main folder body 11 and precompressed clamp body 12.
Embodiment 3:As shown in Figure 10, as the simplification structure of embodiment 2, clamp control device of the invention includes main folder
Tube head 1 and fixed seat 2, main folder tube head 1 are arranged in fixed seat 2.Main folder body 11 is provided with main folder tube head 1, clamp is aided in
First 4 be a precompressed clamp body 12, and main folder body 11 and a precompressed clamp body 12 are arranged on clamp actuating unit 13, and are adopted
The mode at opposite slightly to the right or left is taken to arrange, main folder body 11 and precompressed clamp body 12 are a rigid body, act Complete Synchronization;Clamp power
Mechanism 13 is arranged in fixed seat 2.
As preferred embodiment, the limited block 21 for preventing that the stress of flexible pipe 3 from retreating, limited block 21 are provided with fixed seat 2
It is arranged in the right opposite of main folder body 11 and precompressed clamp body 12.
Embodiment 4:As shown in Figure 11~Figure 13, clamp control device of the invention includes main folder tube head in the present embodiment
1 and fixed seat 2, main folder tube head 1 includes two main folder bodys 11, and additional lock tube head 4 is four precompressed clamp bodies 12, each of which
Individual main folder body 11 and two precompressed clamp bodies 12 partner, and two flexible pipes 3 can be laid simultaneously, and remain a flexible pipe
3 are in clamped condition, and another flexible pipe 3 is in preloading condition.Main folder body 11 and precompressed clamp body 12 are installed in clamp
On actuating unit 13,
It the above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, all category
Protection scope of the present invention is belonged in the technical scheme under thinking of the present invention.It should be pointed out that for the common of the art
For technical staff, some improvements and modifications without departing from the principles of the present invention should be regarded as protection scope of the present invention.