CN109519359A - Peristaltic pump and sample analyser - Google Patents
Peristaltic pump and sample analyser Download PDFInfo
- Publication number
- CN109519359A CN109519359A CN201710855701.7A CN201710855701A CN109519359A CN 109519359 A CN109519359 A CN 109519359A CN 201710855701 A CN201710855701 A CN 201710855701A CN 109519359 A CN109519359 A CN 109519359A
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- China
- Prior art keywords
- extrusion
- hose
- supporting element
- peristaltic pump
- installation cavity
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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
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1238—Machines, pumps, or pumping installations having flexible working members having peristaltic action using only one roller as the squeezing element, the roller moving on an arc of a circle during squeezing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
A kind of peristaltic pump and sample analyser, the peristaltic pump make the integrated rotation of the output shaft of supporting element and motor since supporting element is fixed on the output shaft of motor by axis installation cavity.And output shaft protrudes into the half that the length in axis installation cavity is not less than axis installation cavity axial length, the verticality precision of supporting element after mounting is guaranteed by the verticality of motor output shaft itself in this way, guarantee that the first extrusion being mounted on supporting element has good verticality precision in turn, it reduces in existing peristaltic pump since roller inclination causes to also avoid different hose squeezing degree different problems the problem that flow difference is excessive in each hose as caused by extruding degree difference.
Description
Technical field
This application involves a kind of peristaltic pumps.
Background technique
Peristaltic pump usually possesses 2 or more hoses, and each hose forms a channel.It is intermittent by extrusion
Squeezing tube, so that the fluid in hose be made to flow in one direction.The peristaltic pump can have by fluid isolation in hose
There is fluid that can drive in the wrong direction, the features such as operating can be done, so that peristaltic pump is applied to every field, especially in sample analyser
In, this peristaltic pump is capable of providing stable power, thus is widely used in sample analyser.
Roller (the first extrusion) is assembled on flange by existing peristaltic pump structure first, then again with screw or jackscrew
Flange is fixed on output shaft.Each hose is correspondingly arranged backboard (the second extrusion) and is supported so that roller and
Backboard can be such that fluid flows with squeezing tube.
But there is also mass flow discrepancy, hoses between some defects, such as each hose in structure for these existing peristaltic pumps
Service life is short, it has not been convenient to the problems such as assembling and disassembling hose, therefore improved there is still a need for the structure to peristaltic pump is further.
Summary of the invention
In order to solve the problems, such as mass flow discrepancy in each hose, a kind of peristaltic pump is provided in a kind of embodiment of the application.
The peristaltic pump includes:
Motor；
Supporting element, the supporting element have axis installation cavity, and the supporting element is fixedly mounted on the electricity by axis installation cavity
On the output shaft of machine, and the output shaft protrudes into one that the length in axis installation cavity is not less than the axis installation cavity axial length
Half；
First extrusion, first extrusion is eccentrically set on supporting element, and forms circle with the rotation of supporting element
Zhou Yundong；
Second extrusion, second extrusion are oppositely arranged with the first extrusion；
Pipe holder, for installing hose；
And at least one hose, the hose are mounted on pipe holder, and the hose is from the first extrusion and second
It is passed through between extrusion, the distance between first extrusion and the second extrusion make the first extrusion during exercise can
Squeezing tube simultaneously flows the fluid in hose to side.
As the further improvement of the peristaltic pump, the output shaft passes through entire axis installation cavity or the output shaft is stretched
The length entered in axis installation cavity is equal to axis installation cavity axial length.
As the further improvement of the peristaltic pump, glue is filled between the cavity wall and output shaft of the axis installation cavity, is used
So that the cavity wall of axis installation cavity is bonded on output shaft.
As the further improvement of the peristaltic pump, the part that second extrusion is at least used to contact with hose is used
Self-lubricating material is made or is formed with wear-resisting lubricant coating.
It further include mounting base as the further improvement of the peristaltic pump, second extrusion side is set as to turn
Dynamic structure, the other side of second extrusion is removably mounted in mounting base.
As the further improvement of the peristaltic pump, second extrusion includes the cam bit for being used to support hose, convex
Acting the screw element being arranged on cam bit and the nut with screw element cooperation, the mounting base has installing port, the installation
The position of mouth enables the screw element to be caught in or exit during rotation installing port, and the nut is for consolidating screw element
It is scheduled at installing port.
As the further improvement of the peristaltic pump, the pipe holder sets up the two sides in the first extrusion and supporting element separately,
The mounting base is structure as a whole with pipe holder.
As the further improvement of the peristaltic pump, the peristaltic pump further includes support arm, and the support arm and motor are protected
Hold it is relatively fixed, and the support arm to supporting element formed support, tilted with to avoid supporting element.
As the further improvement of the peristaltic pump, the support arm is abutted with supporting element, and the support arm is to support
The active force that part applies is applied on supporting element from the side opposite with the second extrusion.
As the further improvement of the peristaltic pump, the hose is at least two, and the hose is squeezed by same second
Casting die is supported.
As the further improvement of the peristaltic pump, the supporting element includes upper flange and lower flange, the upper flange and
The tube body of lower flange docks in opposite directions forms the axis installation cavity.
As the further improvement of the peristaltic pump, first extrusion includes at least one roller, the roller two
End is installed in rotation on respectively on the ring flange of upper flange and lower flange.
Peristaltic pump according to above-described embodiment makes since supporting element is fixed on the output shaft of motor by axis installation cavity
The integrated rotation of the output shaft of supporting element and motor.And output shaft protrudes into the length in axis installation cavity not less than axis installation cavity axis
To the half of length, the verticality precision of supporting element after mounting is guaranteed by the verticality of motor output shaft itself in this way, into
And guarantee that the first extrusion being mounted on supporting element has good verticality precision, is reduced in existing peristaltic pump due to roller
Inclination causes to also avoid flowing in each hose as caused by extruding degree difference to different hose squeezing degree different problems
Measure the excessive problem of difference.
In order to solve the problems, such as mass flow discrepancy in each hose, a kind of peristaltic pump is provided in a kind of embodiment of the application.
The peristaltic pump includes:
Motor；
Supporting element, the supporting element have axis installation cavity, and the supporting element is fixedly mounted on motor by axis installation cavity
On output shaft；
First extrusion, first extrusion is eccentrically set on supporting element, and forms circle with the rotation of supporting element
Zhou Yundong；
Second extrusion, second extrusion are oppositely arranged with the first extrusion；
At least one hose, the hose pass through between the first extrusion and the second extrusion；And support arm, it is described
Support arm keeps relatively fixed with motor, and the support arm forms supporting element and supports, and is tilted with to avoid supporting element.
As the further improvement of the peristaltic pump, the support arm is abutted with supporting element, and the support arm is to support
The active force that part applies is applied on supporting element from the side opposite with the second extrusion.
According to the peristaltic pump of above-described embodiment, which provides a support arm, which keeps phase with motor
To fixation, and the support arm forms support to the output shaft of supporting element or motor, is tilted with to avoid supporting element or output shaft, into
And guarantee the verticality precision for the first extrusion being mounted on supporting element, it reduces in existing peristaltic pump since roller inclination causes
To different hose squeezing degree different problems, flow difference mistake in each hose as caused by extruding degree difference is also avoided
Big problem.
In order to extend the service life of hose, a kind of peristaltic pump is provided in a kind of embodiment of the application.
The peristaltic pump includes:
Motor；
Supporting element, the supporting element have axis installation cavity, and the supporting element is fixedly mounted on motor by axis installation cavity
On output shaft；
Pipe holder, for installing hose；
At least one hose, the hose are mounted on pipe holder；
First extrusion, first extrusion is eccentrically set on supporting element, and forms circle with the rotation of supporting element
Zhou Yundong；
And second extrusion, second extrusion are oppositely arranged with the first extrusion；
Wherein, the hose passes through between the first extrusion and the second extrusion, and first extrusion and second squeezes
The distance between casting die makes the first extrusion squeezing tube and fluid in hose can be made to flow to side during exercise；Institute
It states the part that the second extrusion is at least used to contact with hose and is made or is formed with wear-resisting lubricant coating using self-lubricating material.
It further include mounting base as the further improvement of the peristaltic pump, second extrusion side is set as to turn
Dynamic structure, the other side of second extrusion is removably mounted in mounting base.
As the further improvement of the peristaltic pump, second extrusion includes the cam bit for being used to support hose, convex
Acting the screw element being arranged on cam bit and the nut with screw element cooperation, the mounting base has installing port, the installation
The position of mouth enables the screw element to be caught in or exit during rotation installing port, and the nut is for consolidating screw element
It is scheduled at installing port.
As the further improvement of the peristaltic pump, the pipe holder sets up the two sides in the first extrusion and supporting element separately,
The mounting base is structure as a whole with pipe holder.
According to the peristaltic pump of above-described embodiment, the part that the second extrusion of the peristaltic pump is at least used to contact with hose is adopted
Wear-resisting lubricant coating is made or is formed with of self-lubricating material, and this self-lubricating material or wear-resisting lubricant coating itself have lubrication
Function, it is convenient to omit the process of coating lubricating oil.Moreover, the self-lubricating material or wear-resisting lubricant coating reduce hose and second
The service life of hose and the second extrusion can be improved in frictional force between extrusion.
In order to improve the convenience of hose disassembly, a kind of peristaltic pump is provided in a kind of embodiment of the application.The wriggling
Pump includes:
Motor；
Supporting element, the supporting element have axis installation cavity, and the supporting element is fixedly mounted on motor by axis installation cavity
On output shaft；
First extrusion, first extrusion is eccentrically set on supporting element, and forms circle with the rotation of supporting element
Zhou Yundong；
Second extrusion, second extrusion are oppositely arranged with the first extrusion；
Pipe holder, for installing hose；
At least one hose, the hose are mounted on pipe holder, and the hose is squeezed from the first extrusion and second
It is passed through between part, the distance between first extrusion and the second extrusion, which make the first extrusion during exercise, to be squeezed
Hose simultaneously flows the fluid in hose to side；
And mounting base, second extrusion side are set as turntable, the other side of second extrusion
It is removably mounted in mounting base.
As the further improvement of the peristaltic pump, the hose is at least two, and the hose is squeezed by same second
Casting die is supported.
As the further improvement of the peristaltic pump, second extrusion includes the cam bit for being used to support hose, convex
Acting the screw element being arranged on cam bit and the nut with screw element cooperation, the mounting base has installing port, the installation
The position of mouth enables the screw element to be caught in or exit during rotation installing port, and the nut is for consolidating screw element
It is scheduled at installing port.
As the further improvement of the peristaltic pump, the pipe holder sets up the two sides in the first extrusion and supporting element separately,
The mounting base is structure as a whole with pipe holder.
According to the peristaltic pump of above-described embodiment, the second extrusion side is set as turntable in the peristaltic pump, another
Side is removably mounted in mounting base, and the second extrusion is opened as opening the door, so as to convenient
Ground assembly and disassembly are extruded in the hose between the first extrusion and the second extrusion, improve the convenience of operation.
As the further improvement of any of the above peristaltic pump, clamp is housed, to be installed to pipe holder on the hose
On, in which:
For hose dress there are two clamp, the hose length between two clamps is 85-95mm；
And/or the clamp includes locking member and the anti-twist body that is fixedly connected with the locking member, the locking member has
Approximately c-shaped cross section, the hose are fixed in locking member, and the anti-twist body is connected to the side of locking member, the pipe
Bracket has mounting groove, and the locking member and anti-twist body are caught in mounting groove, to fixed hose and prevents hose in mounting groove
Interior rotation.
On the other hand, a kind of sample analyser is provided in a kind of embodiment of the application comprising any of the above item institute
The peristaltic pump shown and the aspirating needle for pumping liquid, the aspirating needle are connected to the hose of peristaltic pump.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of peristaltic pump in a kind of embodiment of the application；
Fig. 2 is the cross-sectional view of peristaltic pump in a kind of embodiment of the application；
Fig. 3 is the schematic diagram of the second extrusion opening state in a kind of embodiment of the application；
Fig. 4 is to increase the structural schematic diagram after support arm in a kind of embodiment of the application；
Fig. 5 is the structural schematic diagram of hose and clamp in a kind of embodiment of the application.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can recognize without lifting an eyebrow, part of feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant it is some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
Relevant operation can be completely understood according to the general technology knowledge of description and this field in specification.
It is formed respectively in addition, feature described in this description, operation or feature can combine in any suitable way
Kind embodiment.Meanwhile each step in method description or movement can also can be aobvious and easy according to those skilled in the art institute
The mode carry out sequence exchange or adjustment seen.Therefore, the various sequences in the description and the appended drawings are intended merely to clearly describe a certain
A embodiment is not meant to be necessary sequence, and wherein some sequentially must comply with unless otherwise indicated.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).
Embodiment one:
Roller inclination is to lead to the first extrusion and the second non-uniform key factor in extrusion gap in usual peristaltic pump
One of, it is different that gap unevenly then will lead to the degree that hose is extruded, to cause flow in each channel different.
In this regard, the present embodiment one provides a kind of peristaltic pump, the verticality precision of the first extrusion can be improved, thus
Flow in each channel is set to keep identical as far as possible.
Fig. 1 and 2 is please referred to, peristaltic pump 930 provided by the present embodiment includes motor 931, the extruding of supporting element 932, first
Part 933, the second extrusion 934, pipe holder 935 and at least one hose 936.
The driving device of the motor 931 as peristaltic pump 930 exports rotary motion.The supporting element 932 is installed with axis
Chamber, the supporting element 932 are fixedly mounted on the output shaft 9311 of motor 931 by axis installation cavity, to make supporting element 932 and electricity
The output shaft 9311 of machine 931 forms integrated rotation.
First extrusion 933 is eccentrically set on supporting element 932, and circumference fortune is formed with the rotation of supporting element 932
It is dynamic.Described eccentric setting refers to installation center of first extrusion 933 on supporting element 932, and (such as the first extrusion is usual
Using rotatable roller, the installation center just refers to the rotation center of roller in this case) with the output shaft of motor 931
9311 center is in deviation state, the first extrusion 933 can be enabled to move around output shaft 9311 in this way, and intermittently
Squeezing tube 936.
The hose 936 is mounted on pipe holder 935, usually detachable fixation, in order to replace hose 936.
Second extrusion 934 is oppositely arranged with the first extrusion 933, there is a certain distance between the two, and hose 936 is squeezed from first
It is passed through between part 933 and the second extrusion 934.And first the distance between extrusion 933 and the second extrusion 934 make first
Extrusion 933 during exercise can squeezing tube 936, and flow fluid in hose 936 to side.
The excessive problem of caused channel capacity difference, the present inventor are tilted in order to reduce roller in existing peristaltic pump 930
The essential reason for causing this phenomenon has been carefully studied, it is found that it is and the roller because in peristaltic pump 930 caused by roller inclination
Inclination be often as caused by the inclination of supporting element 932.In this regard, the present embodiment protrudes into output shaft 9311 in axis installation cavity
Length be not less than axis installation cavity axial length half.By lengthening 9311 length of output shaft of motor 931, make supporting element
932 obtain longer support range, on the one hand can reduce 932 compressive deformation of supporting element, and on the other hand lengthening length of fit has
Conducive to the verticality precision after assembling by the verticality accuracy guarantee supporting element 932 of output shaft 9311 itself, and then guarantee the
The verticality precision of one extrusion 933.
Certainly, this mode of output shaft 9311 for lengthening motor 931 is not obvious.Firstly, because in machinery
Usual motor is all off-the-shelf in field, is used for convenience, and each component has unified standard, such as same size motor
Output shaft length be all unified, and everybody has got used to this unified standard.Certainly, the unification of this standard is big
The R&D work of technical staff is facilitated greatly.But on the contrary, the unification of this standard also forms one to those skilled in the art
Kind of inertial thinking, i.e., the output shaft length of the same specification motor is exactly the same standard, when encountering some Related Technical Issues
When, those skilled in the art would generally make adaptation to adapt to the length of motor output shaft on other component.
Therefore, the present inventor can get on the answer of searching problem from the output shaft length of motor, itself has been to breach this field skill
The habitual thinking of art personnel.
Referring to FIG. 2, the present inventor is by analyzing repeatedly and improving, a kind of preferable mode is to wear output shaft 9311
It crosses entire axis installation cavity or output shaft 9311 protrudes into axis installation cavity and is approximately equal to the length to axis installation cavity axial length.That is, making
Output shaft 9311 at least with along substantially flush, largely limit supporting element 932 in this way in output shaft on axis installation cavity
Deflection space on 9311 makes supporting element 932 and output shaft 9311 keep very high uniformity, and then utilizes output shaft 9311
Verticality ensure the verticality precision of supporting element 932.
When supporting element 932 and output shaft 9311 are fixed, can use screw or jackscrew will support from radial
Part 932 is locked on output shaft 9311.But this fixed form be usually using several screws or jackscrew from different directions into
Row is fixed, so if each screw or jackscrew locking degree are different, it is easy to lead to 932 run-off the straight of supporting element.
In one embodiment, glue can will be filled between the cavity wall of axis installation cavity and output shaft 9311, to make axis
The cavity wall of installation cavity is bonded on output shaft 9311.This adhering fixed mode makes the inner surface and output shaft 9311 of axis installation cavity
Have by after the extended length of output shaft 9311 in bigger contact area, especially the present embodiment, contact area is bigger, fixed
Effect is more obvious.And this adhering fixed mode not only makes supporting element 932 and 9311 distribution of force of output shaft more uniform,
But also it can excessively be concentrated to avoid screw or jackscrew fixed form fastening force and lead to the inclined defect of supporting element 932.
Certainly, glue can be filled up in axis installation cavity, a part of glue can also be filled according to demand.
Further, Fig. 1 and 2 is please referred to, in a kind of specifically embodiment, which includes upper flange
9321 and lower flange 9322, tube body 9321A, 9322A of the upper flange 9321 and lower flange 9322 are docked in opposite directions forms axis installation
Chamber.
The upper flange 9321 and lower flange 9322 use common flange arrangement, all have the ring flange to link into an integrated entity
9321B, 9322B and tube body 9321A, 9322A.Wherein, tube body of the tube body 9322A of lower flange 9322 than upper flange 9321
9321A long, this is because lower flange 9322 is simultaneously also as support construction (upper flange 9321 and the output shaft of upper flange 9321
Can be adhesively fixed or be not adhesively fixed by glue by glue between 9311), thus can make lower flange 9322 with
There is bigger bond area, so that stronger be fixed together with output shaft 9311 between output shaft 9311.
During installation, upper flange 9321 and lower flange 9322 use AB glue to be first bonded solidification, lower flange 9322 and motor 931
Between assembly do not use fastener, directly adopt AB glue water and lower flange 9322 and 931 axis of motor bond together, avoid
Error caused by fastener assembles.
Certainly, above upper flange 9321 and 9322 structure of lower flange are only a kind of examples of supporting element 932, in other realities
It applies in example, can also there is other structures.Other than this supporting element 932 being composed of multiple isolated structures, branch
Support member 932 can also be integral structure, such as integrally formed supporting element.
Please continue to refer to Fig. 1 and 2, in one embodiment, which includes at least one roller, roller
Both ends are installed in rotation on respectively on the ring flange of upper flange 9321 and lower flange 9322.The roller can by bearing or
It is directly installed on without bearing on ring flange 9321B, 9322B of upper flange 9321 and lower flange 9322.
First extrusion 933 along output shaft 9311 be arranged, when supporting element 932 rotate when, the first extrusion 933 also with
Do and move in a circle around the center of output shaft 9311.First extrusion 933 can be rotated itself with relative support 932, from
And the active force between hose 936 can be optimized, the active force a part for being applied to the first extrusion 933 on hose 936
It is converted into the rotation of itself, the stress being applied on hose 936 is avoided excessively to concentrate, 936 service life of hose is caused to reduce.
Certainly, in some other embodiment, which is also possible to be fixed on supporting element 932 in itself,
For example, a kind of cylindrical body being fixed on supporting element 932.
Please continue to refer to Fig. 1 and 2, in one embodiment, motor 931 is mounted on the lower section of a mounting plate 937, motor
931 output shaft 9311 is upward through mounting plate 937.Pipe holder 935 is mounted on mounting plate 937, can be divided into left support 9351
With right support 9352, the left support 9351 and right support 9352 set up the two sides in supporting element 932 and the first extrusion 933 separately.
Five hoses 936 (two and its more than be ok) are present embodiments provided, five about 936 hoses are arranged successively, from support
The side of part 932 and the first extrusion 933 bypasses, and is mounted on pipe holder 935 by the connector on hose 936.Second squeezes
Casting die 934 then forms support (effect for also functioning to extruding) to hose 936 from the other side of hose 936.Second extrusion 934
Both ends are separately fixed on left support 9351 and right support 9352.Certainly, the second extrusion 934 can also be fixed on other ground
Side is such as fixed specifically for the second extrusion 934 setting mounting base.
In common peristaltic pump 930, each hose 936 respectively corresponds one the second extrusion of setting and is supported, each
Second extrusion is all independent manufacture and installation.Due to the assembly precision difference of fixed structure between each second extrusion 934
And accuracy of manufacture difference, it will cause different the distance between second extrusions 934 and the first extrusion 933 variant, from
And the degree for being easy to cause each hose 936 to be extruded is different, the flow in turn resulting in each channel is different.
In this regard, please refer to Fig. 2 and 3, in a kind of embodiment, the second extrusion 934 uses overall structure, forms a back
The cam bit 9341 of plate form is formed simultaneously support and extruding to all five groups of hoses 936.This whole structural integrity ratio
Preferably, gap difference caused by can cooperating to avoid multiple cam bits in existing peristaltic pump and the same roller.And this one
Second extrusion 934 of body formula can also reduce assembly work, it is only necessary to which installation is primary.
The present embodiment is conducive to the extended length of output shaft 9311 to pass through the output shaft 9311 of motor 931 itself in this way
Verticality guarantees the verticality precision of supporting element 932 after mounting, and then guarantees the first extrusion being mounted on supporting element 932
933 verticality precision is reduced in existing peristaltic pump 930 since roller inclination causes to different 936 extruding degree differences of hose
The problem of, also avoid the problem that flow difference is excessive in each hose 936 as caused by extruding degree difference.Especially, it adopts
After being fixed output shaft 9311 and axis installation cavity with gluing, it is equally loaded, is more difficult between output shaft 9311 and supporting element 932
Inclination, so that supporting element 932 has better verticality precision.
Embodiment two:
The present embodiment two provides a kind of peristaltic pump 930.
As shown in Figure 1-3, peristaltic pump 930 provided in this embodiment includes motor 931, supporting element 932, pipe holder 935, extremely
A few hose 936, the first extrusion 933 and the second extrusion 934.
The supporting element 932 has axis installation cavity, which is fixedly mounted on the defeated of motor 931 by axis installation cavity
On shaft 9311.For installing hose 936, which is mounted on pipe holder 935 pipe holder 935.First extrusion
933 are eccentrically set on supporting element 932, and form circular motion with the rotation of supporting element 932.Second extrusion 934 with
First extrusion 933 is oppositely arranged.Hose 936 passes through between the first extrusion 933 and the second extrusion 934, this first squeeze
The distance between casting die 933 and the second extrusion 934 make the first extrusion 933 can squeezing tube 936 and during exercise
Fluid in hose 936 is flowed to side.
Wherein, the part which at least is used to contact with hose 936 is made of self-lubricating material or shape
At there is wear-resisting lubricant coating.This self-lubricating material or wear-resisting lubricant coating itself have lubricating function, it is convenient to omit smear profit
The process of lubricating oil.Moreover, the self-lubricating material or wear-resisting lubricant coating reduce between hose 936 and the second extrusion 934
The service life of hose 936 and the second extrusion 934 can be improved in frictional force.
Embodiment three:
The present embodiment three provides a kind of peristaltic pump 930.
As shown in Figure 1-3, peristaltic pump 930 provided in this embodiment includes motor 931, supporting element 932, pipe holder 935, extremely
A few hose 936, the first extrusion 933, the second extrusion 934 and mounting base.
The supporting element 932 has axis installation cavity, which is fixedly mounted on the defeated of motor 931 by axis installation cavity
On shaft 9311.For installing hose 936, which is mounted on pipe holder 935 pipe holder 935.First extrusion
933 are eccentrically set on supporting element 932, and form circular motion with the rotation of supporting element 932.Second extrusion 934 with
First extrusion 933 is oppositely arranged.Hose 936 passes through between the first extrusion 933 and the second extrusion 934, this first squeeze
The distance between casting die 933 and the second extrusion 934 make the first extrusion 933 can squeezing tube 936 and during exercise
Fluid in hose 936 is flowed to side.
Wherein, which is set as turntable, and the other side of second extrusion 934 is with can
The mode of disassembly is mounted in mounting base.
Fig. 1 and 3 are please referred to, in one embodiment, pipe holder 935 is mounted on mounting plate 937, can be divided into left support
9351 and right support 9352, the left support 9351 and right support 9352 set up two in supporting element 932 and the first extrusion 933 separately
Side.Second extrusion, 934 both ends are separately mounted on left support 9351 and right support 9352.Wherein, the second extrusion 934 is logical
It crosses shaft to be mounted on left support 9351 (or right support 9352), to form rotatable mechanism.Second extrusion 934 it is another
End is then removably mounted in mounting base.Certainly, as shown in figs. 1 and 3, the mounting base and pipe holder in the present embodiment
935 (specially right supports 9352) are structure as a whole, therefore the second extrusion 934 is to be removably mounted at right support
On 9352.Certainly, mounting base itself is can be arranged independently of pipe holder 935, is not necessarily to be integrated knot with pipe holder 935
Structure.
Further, with continued reference to FIG. 3, in a kind of embodiment, which includes being used to support hose
936 cam bit 9341, the screw element 9342 that protrusion is arranged on cam bit 9341 and the nut cooperated with screw element 9342
9343, which has installing port 9352A, the installing port
The position of 9352A enables screw element 9342 to be caught in or exit during rotation installing port 9352A, which is used for
Screw element 9342 is fixed at installing port 9352A.
The cam bit 9341 is that the shaft on left support 9351 makes rotating motion, when its rotate to right support 9352 (or
The mounting base of other forms) on, screw element 9342 can protrude into installing port 9352A.Nut 9343 itself is greater than installing port
9352A, after screw element 9342 protrudes into installing port 9352A, tightening the nut 9343 positioned at the other side installing port 9352A can be incited somebody to action
Screw element 9342 and cam bit 9341 are fixed on right support 9352.When unlocking, nut 9343 can be removed or unscrewed
It opens.Nut 9343 be in itself can be retained on screw element 9342, as long as guarantee nut 9343 do not influence screw element 9342 from
Installing port 9352A is exited and is caught in.In addition, nut 9343, which is retained on screw element 9342, to be lost to avoid nut 9343
It loses, improves the convenience of operation.
This peristaltic pump 930 of the present embodiment need to only open the side of cam bit 9341, nothing when needing replacing hose 936
Cam bit 9341 need to be removed completely, so that it may which the replacement for completing hose 936 keeps the replacement of consumptive material hose 936 more efficient.
Likewise, referring to FIG. 3, hose 936 is at least two, these hoses 936 are by same second in the present embodiment
Extrusion 934 is supported.This whole 934 comparison of coherence of the second extrusion is good, can be multiple to avoid existing peristaltic pump
Gap difference caused by cam bit and the same roller cooperate.And the second extrusion 934 of this integral type can also be reduced
Assembly work, it is only necessary to which installation is primary.
Example IV:
The present embodiment four provides another peristaltic pump 930.
As shown in figure 4, peristaltic pump 930 provided in this embodiment includes motor 931, supporting element 932, pipe holder 935, at least
One hose 936, the first extrusion 933, the second extrusion 934 and support arm 938.
The supporting element 932 has axis installation cavity, which is fixedly mounted on the defeated of motor 931 by axis installation cavity
On shaft 9311.For installing hose 936, which is mounted on pipe holder 935 pipe holder 935.First extrusion
933 are eccentrically set on supporting element 932, and form circular motion with the rotation of supporting element 932.Second extrusion 934 with
First extrusion 933 is oppositely arranged.Hose 936 passes through between the first extrusion 933 and the second extrusion 934, this first squeeze
The distance between casting die 933 and the second extrusion 934 make the first extrusion 933 can squeezing tube 936 and during exercise
Fluid in hose 936 is flowed to side.
Wherein, which keeps relatively fixed with motor 931, and the support arm 938 forms branch to supporting element 932
Support, with to avoid supporting element 932 or the inclination of output shaft 9311.
Referring to FIG. 4, the support arm 938 can be fixedly mounted on mounting plate 937, motor 931 is also fixedly mounted on installation
Plate 937, so that support arm 938 be made to keep relatively fixed with motor 931.
With continued reference to FIG. 4, the support arm 938 can be the support arm 938 and supporting element to the support of supporting element 932
932 abut, and the support arm 938 to the active force that supporting element 932 applies is acted on from the side opposite with the second extrusion 934
Onto supporting element 932 and/or output shaft 9311.What the side opposite with the second extrusion 934 referred to can be by supporting element 932 to
Two extrusions, 934 direction push side, such support arm 938 be applied to supporting element 932 active force and hose 936 it is right
The reaction force of first extrusion 933 is able to carry out counteracting, so that supporting element 932 be avoided to issue in the reaction force of hose 936
Raw inclination.
In the embodiment shown in fig. 4, which is in vertical structure, and the upper end abuts on supporting element 932, specifically
It can be and be connected on upper flange 9321, such as abut to the edge of upper flange 9321.Wherein, the supporting element 932 and support arm
938 directly contacts form hardness docking；Or, being connect between the supporting element 932 and support arm 938 using elastic material or elastic construction
Touching forms elasticity docking.
Hardness docking refers to that the part to contact with each other between supporting element 932 and support arm 938 is direct using hard material
It abuts.
Elasticity docking refer to the part that contacts with each other between supporting element 932 and support arm 938 using elastic material or
Person is provided with elastic construction.This elasticity docking can make have soft contact between supporting element 932 and support arm 938.Example
Such as, in one embodiment, which includes elastic component and fitting, which may be provided on supporting element 932,
It can be set on support arm 938, which applies an elastic force towards its abutting object to fitting, such as works as bullet
Property part and fitting when being mounted on support arm 938, which applies one to fitting and pushes fitting to supporting element 932
Elastic force, to make to remain stable Elastic Contact between supporting element 932 and support arm 938.
In addition, the support arm 938 can be through bearing the abutting of supporting element 932 and realize, pacify on support arm 938
A bearing is filled, is mutually abutted by outer ring rotatable on bearing.Since bearing outer ring can rotate, this abutting
It is a kind of abutting of activity, certainly, other than bearing, can also be realized using other rotatable rotating members (such as roller)
The abutting of this activity between support arm 938 and supporting element 932.
On the other hand, which, which can be through bearing the support of supporting element 932, realizes, for example, supporting
Part 932 (such as upper flange 9321) is provided with the axle portion concentric with output shaft 9311, and support arm 938 is mounted on branch by bearing
The axle portion of support member 932.Conversely, can also be led to being arranged on support arm 938 with the concentric axle portion of output shaft 9311, supporting element 932
Bearing is crossed to be mounted on support arm 938.
Certainly, in order to further ensure the unification of flow between each hose 936, referring to FIG. 4, when hose 936 is at least
At two, which can be supported by same second extrusion 934.
Embodiment five
The present embodiment five provides a kind of peristaltic pump.
Fig. 1 and 5 are please referred to, which includes hose 936, pipe holder 935 and other dependency structures.The hose 936
Upper that clamp 936A is housed, hose 936 is installed on pipe holder 935 by clamp 936A.
In one embodiment, there are two clamp 936A, two clamp 936A to be separately mounted to pipe holder for the hose 936 dress
It is located at two clamp 936A on the exactly hose 936 that 935 different location, the first extrusion 933 and the second extrusion 934 squeeze
Between part 936B.Hose segment 936B length between two clamp 936A is 85-95mm.
In one embodiment, clamp 936A includes locking member 936C and the anti-twist body that is fixedly connected with locking member 936C
936D, the two can be integrally formed or separately positioned be secured together again.Locking member 936C has approximately c-shaped transversal
Face, the hose 936 are fixed in locking member 936C, such as hose 936 is bonded in the C-shaped notch of locking member 936C by glue
It is interior.Anti-twist body 936D is located at the side of locking member 936C.The pipe holder 935 have mounting groove 9353, locking member 936C and
Anti-twist body 936D is caught in mounting groove 9353.The mounting groove 9353 forms limitation to locking member 936C and anti-twist body 936D, to
Fixed hose 936.Meanwhile the mounting groove 9353 is also to anti-twist body 936D on the circumferencial direction centered on 936 axle center of hose
Limitation is formed, to prevent hose 936 from rotating in mounting groove 9353, around the axis of hose 936 when especially hose 936 is extruded
The rotation of the heart.
Locking member 936C can be arranged along 936 axial line of hose, and anti-twist body 936D can be using along 936 axle center of hose
The cylindrical body of line setting.
Multiple embodiments and technical characteristic are provided in above-described embodiment one to five, these technical characteristics can be according to reality
Demand carries out any combination, such as can also carry out group with part or all technical features in embodiment two to five in embodiment one
It closes, similarly, embodiment two to five can also be combined respectively with some or all of any other embodiment technical characteristic.
Embodiment six:
The present embodiment six provides a kind of sample analyser.
The sample analyser includes a kind of peristaltic pump and the aspirating needle for pumping liquid, the aspirating needle and peristaltic pump it is soft
Pipe connection, controls aspirating needle by peristaltic pump, to make to generate the pressure difference for being used for pumping liquid in aspirating needle.
The peristaltic pump can use any peristaltic pump as shown in above-described embodiment.The aspirating needle can carry out magnetic
After lock out operation, for the cleaning solution in the reaction cup of absorption.It can also be after completing entire response analysis process, for aspirating
The waste liquid of reaction cup reduces the pollution of waste liquid in order to which reaction cup does not have waste liquid presence when carrying out throwing cup.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (24)
1. a kind of peristaltic pump characterized by comprising
Motor；
Supporting element, the supporting element have axis installation cavity, and the supporting element is fixedly mounted on the motor by axis installation cavity
On output shaft, and the output shaft protrudes into the half that the length in axis installation cavity is not less than the axis installation cavity axial length；
First extrusion, first extrusion are eccentrically set on supporting element, and circumference fortune is formed with the rotation of supporting element
It is dynamic；
Second extrusion, second extrusion are oppositely arranged with the first extrusion；
Pipe holder, for installing hose；
And at least one hose, the hose are mounted on pipe holder, and the hose is squeezed from the first extrusion and second
It is passed through between part, the distance between first extrusion and the second extrusion, which make the first extrusion during exercise, to be squeezed
Hose simultaneously flows the fluid in hose to side.
2. peristaltic pump as described in claim 1, which is characterized in that the output shaft passes through entire axis installation cavity or described defeated
Shaft protrudes into the length in axis installation cavity equal to axis installation cavity axial length.
3. peristaltic pump as described in claim 1, which is characterized in that fill glue between the cavity wall and output shaft of the axis installation cavity
Liquid, be bonded in the cavity wall of axis installation cavity on output shaft.
4. peristaltic pump as described in claim 1, which is characterized in that the portion that second extrusion is at least used to contact with hose
Divide and is made or is formed with wear-resisting lubricant coating using self-lubricating material.
5. peristaltic pump as described in claim 1, which is characterized in that it further include mounting base, the setting of second extrusion side
The other side for turntable, second extrusion is removably mounted in mounting base.
6. peristaltic pump as claimed in claim 5, which is characterized in that second extrusion includes the cam for being used to support hose
The screw element on cam bit and the nut with screw element cooperation is arranged in block, protrusion, and the mounting base has installing port, described
The position of installing port enables the screw element to be caught in or exit during rotation installing port, and the nut is used for screw thread
Part is fixed at installing port.
7. peristaltic pump as claimed in claim 6, which is characterized in that the pipe holder sets up separately in the first extrusion and supporting element
Two sides, the mounting base are structure as a whole with pipe holder.
8. peristaltic pump as described in claim 1, which is characterized in that the peristaltic pump further includes support arm, the support arm with
Motor keeps relatively fixed, and the support arm forms supporting element and supports, and is tilted with to avoid supporting element.
9. peristaltic pump as claimed in claim 8, which is characterized in that the support arm is abutted with supporting element, and the support arm
The active force applied to supporting element is applied on supporting element from the side opposite with the second extrusion.
10. peristaltic pump as described in claim 1, which is characterized in that the hose is at least two, and the hose is by same
Second extrusion is supported.
11. such as the described in any item peristaltic pumps of claim 1-10, which is characterized in that the supporting element includes upper flange and laxative remedy
The tube body of orchid, the upper flange and lower flange docks in opposite directions forms the axis installation cavity.
12. peristaltic pump as claimed in claim 11, which is characterized in that first extrusion includes at least one roller, institute
Roller both ends are stated to be installed in rotation on respectively on the ring flange of upper flange and lower flange.
13. a kind of peristaltic pump characterized by comprising
Motor；
Supporting element, the supporting element have axis installation cavity, and the supporting element is fixedly mounted on the output of motor by axis installation cavity
On axis；
Pipe holder, for installing hose；
At least one hose, the hose are mounted on pipe holder；
First extrusion, first extrusion are eccentrically set on supporting element, and circumference fortune is formed with the rotation of supporting element
It is dynamic；
And second extrusion, second extrusion are oppositely arranged with the first extrusion；
Wherein, the hose passes through between the first extrusion and the second extrusion, first extrusion and the second extrusion
The distance between make the first extrusion squeezing tube and fluid in hose can be made to flow to side during exercise；Described
The part that two extrusions are at least used to contact with hose is made or is formed with wear-resisting lubricant coating using self-lubricating material.
14. peristaltic pump as claimed in claim 13, which is characterized in that further include mounting base, second extrusion side is set
It is set to turntable, the other side of second extrusion is removably mounted in mounting base.
15. peristaltic pump as claimed in claim 14, which is characterized in that second extrusion includes be used to support hose convex
The screw element on cam bit and the nut with screw element cooperation is arranged in wheel block, protrusion, and the mounting base has installing port, institute
The position for stating installing port enables the screw element to be caught in or exit during rotation installing port, and the nut is used for spiral shell
Line part is fixed at installing port.
16. peristaltic pump as claimed in claim 15, which is characterized in that the pipe holder sets up separately in the first extrusion and supporting element
Two sides, the mounting base is structure as a whole with pipe holder.
17. a kind of peristaltic pump characterized by comprising
Motor；
Supporting element, the supporting element have axis installation cavity, and the supporting element is fixedly mounted on the output of motor by axis installation cavity
On axis；
First extrusion, first extrusion are eccentrically set on supporting element, and circumference fortune is formed with the rotation of supporting element
It is dynamic；
Second extrusion, second extrusion are oppositely arranged with the first extrusion；
Pipe holder, for installing hose；
At least one hose, the hose are mounted on pipe holder, and the hose from the first extrusion and the second extrusion it
Between pass through, the distance between first extrusion and the second extrusion make the first extrusion during exercise being capable of squeezing tube
And flow the fluid in hose to side；
And mounting base, second extrusion side are set as turntable, the other side of second extrusion is with can
The mode of disassembly is mounted in mounting base.
18. peristaltic pump as claimed in claim 17, which is characterized in that the hose is at least two, and the hose is by same
A second extrusion is supported.
19. peristaltic pump as claimed in claim 17, which is characterized in that second extrusion includes be used to support hose convex
The screw element on cam bit and the nut with screw element cooperation is arranged in wheel block, protrusion, and the mounting base has installing port, institute
The position for stating installing port enables the screw element to be caught in or exit during rotation installing port, and the nut is used for spiral shell
Line part is fixed at installing port.
20. peristaltic pump as claimed in claim 19, which is characterized in that the pipe holder sets up separately in the first extrusion and supporting element
Two sides, the mounting base is structure as a whole with pipe holder.
21. a kind of peristaltic pump characterized by comprising
Motor；
Supporting element, the supporting element have axis installation cavity, and the supporting element is fixedly mounted on the output of motor by axis installation cavity
On axis；
First extrusion, first extrusion are eccentrically set on supporting element, and circumference fortune is formed with the rotation of supporting element
It is dynamic；
Second extrusion, second extrusion are oppositely arranged with the first extrusion；
At least one hose, the hose pass through between the first extrusion and the second extrusion；
And support arm, the support arm keep relatively fixed with motor, and the support arm forms supporting element and supports, to
Supporting element is avoided to tilt.
22. peristaltic pump as claimed in claim 21, which is characterized in that the support arm is abutted with supporting element, and the support
Arm to the active force that supporting element applies is applied on supporting element from the side opposite with the second extrusion.
23. such as the described in any item peristaltic pumps of claim 1-22, which is characterized in that clamp is housed, to pacify on the hose
It is attached on pipe holder, in which:
For hose dress there are two clamp, the hose length between two clamps is 85-95mm；
And/or the clamp includes locking member and the anti-twist body that is fixedly connected with the locking member, the locking member has substantially
For the cross section of C-shaped, the hose is fixed in locking member, and the anti-twist body is connected to the side of locking member, the pipe holder
With mounting groove, the locking member and anti-twist body are caught in mounting groove, to fixed hose and prevent hose from turning in mounting groove
It is dynamic.
24. a kind of sample analyser, which is characterized in that including such as described in any item peristaltic pumps of claim 1-23 and for taking out
The aspirating needle of imbibition body, the aspirating needle are connected to the hose of peristaltic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855701.7A CN109519359A (en) | 2017-09-20 | 2017-09-20 | Peristaltic pump and sample analyser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855701.7A CN109519359A (en) | 2017-09-20 | 2017-09-20 | Peristaltic pump and sample analyser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109519359A true CN109519359A (en) | 2019-03-26 |
Family
ID=65769401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710855701.7A Pending CN109519359A (en) | 2017-09-20 | 2017-09-20 | Peristaltic pump and sample analyser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109519359A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848119A (en) * | 2019-10-30 | 2020-02-28 | 江苏大学 | Low-pulse peristaltic pump head |
| CN110987418A (en) * | 2020-01-04 | 2020-04-10 | 山东理工大学 | Open-loop force system indexing loading gearbox state detection test bed |
| CN116292215A (en) * | 2023-05-16 | 2023-06-23 | 佛山市稚蒙环境科技有限公司 | Peristaltic pump capable of prolonging service life of conveying pump pipe |
| CN116624367A (en) * | 2021-06-01 | 2023-08-22 | 赵远先 | Rotor structure and hose pump with same |
-
2017
- 2017-09-20 CN CN201710855701.7A patent/CN109519359A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848119A (en) * | 2019-10-30 | 2020-02-28 | 江苏大学 | Low-pulse peristaltic pump head |
| CN110987418A (en) * | 2020-01-04 | 2020-04-10 | 山东理工大学 | Open-loop force system indexing loading gearbox state detection test bed |
| CN116624367A (en) * | 2021-06-01 | 2023-08-22 | 赵远先 | Rotor structure and hose pump with same |
| CN116292215A (en) * | 2023-05-16 | 2023-06-23 | 佛山市稚蒙环境科技有限公司 | Peristaltic pump capable of prolonging service life of conveying pump pipe |
| CN116292215B (en) * | 2023-05-16 | 2023-08-11 | 佛山市稚蒙环境科技有限公司 | Peristaltic pump capable of prolonging service life of conveying pump pipe |
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