CN109201640A - Service sink, cleaning device and specimen needle cleaning method - Google Patents
Service sink, cleaning device and specimen needle cleaning method Download PDFInfo
- Publication number
- CN109201640A CN109201640A CN201811101998.9A CN201811101998A CN109201640A CN 109201640 A CN109201640 A CN 109201640A CN 201811101998 A CN201811101998 A CN 201811101998A CN 109201640 A CN109201640 A CN 109201640A
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- chamber
- cleaning
- specimen needle
- opening
- service sink
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/023—Cleaning the external surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The present invention relates to a kind of service sink, cleaning device and specimen needle cleaning methods.Service sink, for cleaning specimen needle, with first chamber and the first opening being connected to first chamber and outlet, cleaning part is provided in first chamber, cleaning part is with second chamber and the second opening being connected to second chamber, and second is open and the first opening arrangement in the same direction；Second chamber has the bottom surface for being open opposite with second and connect the side wall of bottom surface and the second opening, side wall includes the first side wall that preset distance is upwardly extended by bottom surface and the second sidewall between the first side wall and the second opening, and second sidewall is along the tapered setting of first direction by bottom surface to the second opening.Service sink provided by the invention meets the standard requirements of residual contamination rate to the cleaning effect of specimen needle, and at low cost, convenient for safeguarding.
Description
Technical field
The present invention relates to medical diagnostic equipment technical fields, more particularly to a kind of service sink, cleaning device and specimen needle
Cleaning method.
Background technique
Biochemiluminescence immunoassay has many advantages, such as that high sensitivity, the range of linearity are wide and easy to operate, quick, is facing
Bed inspection is widely used in field.Currently, the biochemiluminescence based on biochemiluminescence immunoassay measures
Instrument has become mature medical diagnostic equipment.Biochemiluminescence measurement needs to draw sample and related reagent by specimen needle
Reaction, in order to avoid carrying pollution effect testing result caused by specimen needle, it is desirable that the specimen needle of sampling must be clean
's.
In the prior art there are two solution to this problem: first is that using the disposable tip of head insulation, still
This method consumptive material loss is big, at high cost, also limits the use of level detection.Second is that using the metal probe reused,
Specimen needle is cleaned before every sub-sampling, for example, specimen needle is cleaned using ultrasonic cleaning equipment or cleaning solution douching technique, with
Control the carrying pollution between sample.
Ultrasonic cleaning equipment higher cost, structure is more complex, is not easy to later maintenance；And current cleaning solution douching technique
Used in cleaning device hydraulic pressure, flow velocity that cleaning solution is formed in service sink it is poor to the cleaning effect of specimen needle, nothing
Method meets the standard requirements of residual contamination rate, and there are the risk that cleaning solution overflows service sink, reliability is lower.
Summary of the invention
The object of the present invention is to provide a kind of service sink, cleaning device and specimen needle cleaning method, the cleaning of service sink is imitated
Fruit can satisfy the standard requirements of residual contamination rate.
On the one hand, the embodiment of the present invention proposes a kind of service sink, and for cleaning specimen needle, service sink has first chamber
The first opening being connected to with first chamber and outlet, are provided with cleaning part in first chamber, cleaning part have second chamber and
The second opening being connected to second chamber, and the second opening and the first opening arrangement in the same direction；Second chamber has and the second opening
The side wall that opposite bottom surface and connection bottom surface are open with second, side wall include that preset distance is upwardly extended by bottom surface
One side wall and the second sidewall between the first side wall and the second opening, second sidewall along by bottom surface to the second opening the
The tapered setting in one direction.
It according to an aspect of an embodiment of the present invention, is in predetermined angle, predetermined angular between second sidewall and the first side wall
The value range of α are as follows: 5 °≤α≤15 °.
According to an aspect of an embodiment of the present invention, second chamber along first direction the first depth dimensions be L1, first
The preset distance that side wall is upwardly extended by bottom surface is L, and L≤0.5L1.
According to an aspect of an embodiment of the present invention, cleaning part offers at the position of the second opening through second side
Multiple overflow launders of wall, and overflow launder is L2, and L2≤0.5L1 along the second depth dimensions of first direction.
According to an aspect of an embodiment of the present invention, bottom surface is any one of plane, spherical and tapered surface.
According to an aspect of an embodiment of the present invention, second chamber is round hole, elliptical aperture along the cross section of first direction
Any one of with strip-shaped hole.
According to an aspect of an embodiment of the present invention, the wall portion of first chamber is further provided with above cleaning part
One or more baffle, one or more baffle is extended by wall portion towards the inner space of first chamber, in the first chamber
The spiralling rotating channel that indoor formation is open towards first, and be formed in first chamber and accommodate specimen needle along predetermined
The mobile accommodation space in track.
According to an aspect of an embodiment of the present invention, the quantity of baffle is multiple, and each baffle is tilted towards the first opening,
Multiple baffles along first chamber circumferential direction helically it is ladder-like distribution to form rotating channel.
According to an aspect of an embodiment of the present invention, the value range of the helix angle β of each baffle are as follows: 15 °≤β≤
25°。
According to an aspect of an embodiment of the present invention, two adjacent baffles have predetermined space in a first direction, and
It is continuously distributed in the circumferential, exist close to the baffle of the first opening with the baffle far from the first opening in multiple baffles along first direction
It partly overlaps in circumferential direction.
According to an aspect of an embodiment of the present invention, the side of wall portion of each baffle far from first chamber is formed with indent
Edge, the edge of multiple baffles forms predetermined accommodation space.
According to an aspect of an embodiment of the present invention, projection of the predetermined accommodation space in the plane vertical with first direction
For strip-shaped hole or slotted eye.
On the other hand, the embodiment of the invention also provides a kind of cleaning devices comprising: liquid feed device, and with inner wall
It is connected to one end of the specimen needle of outer wall, to provide the cleaning solution of cleaning specimen needle；Foregoing any service sink, sample
The other end of needle protrudes into first chamber by the first opening of service sink, wherein between the wall portion and cleaning part of first chamber
Space is used to clean the inner wall of specimen needle, and the second chamber of cleaning part is used to clean the outer wall of specimen needle, and cleaning solution passes through outlet
Outflow；And pumping equipment, the outlet with service sink.
According to an aspect of an embodiment of the present invention, cleaning device further comprises removably being covered on the first opening
Anti-overflow device, anti-overflow device, which has, accommodates the accommodation space that specimen needle is moved along desired trajectory, and for preventing cleaning solution clear
It is overflowed during washing specimen needle from the first opening.
On the other hand, the embodiment of the invention also provides a kind of specimen needle cleaning sides using foregoing cleaning device
Method, specimen needle cleaning method include: first between the wall portion and cleaning part of the first chamber that specimen needle is protruded into service sink
Position；Cleaning solution is supplied to specimen needle, flows out cleaning solution from specimen needle, to clean the inner wall of specimen needle；By specimen needle from
One position is moved to the second position of the second chamber of cleaning part；Cleaning solution is supplied to specimen needle, makes to flow out from specimen needle clear
Washing lotion forms vortex between the bottom surface and side wall of second chamber, to clean the outer wall of specimen needle.
According to an aspect of an embodiment of the present invention, the distance between bottom surface of the second position and second chamber h takes
It is worth range are as follows: 3mm≤h≤5mm.
Service sink provided by the invention has the of tapered second sidewall by being arranged in the cleaning part of first chamber
Two chambers, to improve the cleaning effect of specimen needle, are allowed to meet carrying so that cleaning solution can form vortex in second chamber
The standard requirements of pollution rate, and it is at low cost, convenient for safeguarding.
Detailed description of the invention
The feature, advantage and technical effect of exemplary embodiment of the present described below with reference to the accompanying drawings.
Fig. 1 is a kind of structural schematic diagram of cleaning device provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of one of cleaning device shown in FIG. 1 service sink；
Fig. 3 is the cross-sectional view in the direction service sink A-A shown in Fig. 2；
Fig. 4 is the effect diagram that specimen needle is cleaned in the second chamber of cleaning part；
Fig. 5 is the structural schematic diagram of another cleaning part of service sink shown in Fig. 2；
Fig. 6 is the schematic cross-sectional view of another service sink provided in an embodiment of the present invention；
Fig. 7 is the schematic top plan view of service sink shown in fig. 6；
Fig. 8 is the structural representation that another cleaning device provided in an embodiment of the present invention removes liquid feed device and pumping equipment
Figure；
Fig. 9 is the structural schematic diagram of the anti-overflow device in cleaning device shown in Fig. 8；
Figure 10 is the longitudinal sectional view of anti-overflow device shown in Fig. 9；
Figure 11 is the top view of anti-overflow device shown in Fig. 9；
Figure 12 is the top view of another anti-overflow device provided in an embodiment of the present invention；
Figure 13 is the flow diagram of specimen needle cleaning method provided in an embodiment of the present invention；
Figure 14 is using the cleaning specimen needle of specimen needle cleaning method shown in Figure 13, and specimen needle is in the second position and the second chamber
The velocity profile of the cleaning solution of the end of specimen needle when the distance between bottom surface of room h=1mm；
Figure 15 is using the cleaning specimen needle of specimen needle cleaning method shown in Figure 13, and specimen needle is in the second position and the second chamber
The velocity profile of the cleaning solution of the end of specimen needle when the distance between bottom surface of room h=5mm；
Figure 16 is using the cleaning specimen needle of specimen needle cleaning method shown in Figure 13, and specimen needle is in the second position and the second chamber
The velocity profile of the cleaning solution of the end of specimen needle when the distance between bottom surface of room h=7mm.
Wherein:
1- first chamber；2- second chamber；1a- first is open；The outlet 1b-；2a- second is open；3- side wall；3a- first
Side wall；3b- second sidewall；4- overflow launder；11- cleaning part；12- reinforcing rib；X- first direction；α-predetermined angular；β-spiral liter
Angle；The first position P1-；The second position P2-；L- preset distance；The first depth dimensions of L1-；The second depth dimensions of L2-；
10- service sink；20- liquid feed device；30- pumping equipment；40- anti-overflow device；41- body part；13,42- baffles；
41a- first end；41b- second end；41c- inner hole；C- accommodation space；Arc edge；44- abnormity edge；14,45- items
Shape hole or slotted eye；The first curved edge of 46-；The second curved edge of 47-；48- flange.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, many details are proposed, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case where not needing some details in these details.Below to implementation
The description of example is used for the purpose of providing by showing example of the invention and better understanding of the invention.In attached drawing and following
Description in, at least part of known features and technology are not shown, unnecessary fuzzy to avoid causing the present invention；
Also, for clarity, may be exaggerated the size of part-structure.In addition, feature described below, structure or characteristic can be with
It is incorporated in one or more embodiments in any suitable manner.
The noun of locality of middle appearance described below is direction shown in figure, is not to specimen needle cleaning dress of the invention
The specific structure set is defined.In the description of the present invention, it is also necessary to explanation, unless otherwise specific regulation and limit
Fixed, term " installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachable connection, or
It is integrally connected；It can be directly connected, can also be indirectly connected.For the ordinary skill in the art, visual tool
Body situation understands the concrete meaning of above-mentioned term in the present invention.
For a better understanding of the present invention, below with reference to Fig. 1 to Figure 16 to service sink provided in an embodiment of the present invention, cleaning
Device, anti-overflow device and specimen needle cleaning method are described in detail.
Refering to fig. 1, the embodiment of the invention provides a kind of cleaning devices comprising service sink 10, liquid feed device 20 and row
Liquid device 30.
Liquid feed device 20 is connected to one end of the specimen needle N with inner and outer wall, to provide the cleaning of cleaning specimen needle N
Liquid.The other end of specimen needle N protrudes into service sink 10, to clean the inner and outer wall of specimen needle N.Pumping equipment 30 is for receiving
The waste liquid flowed out from service sink 10.
The specific structure for the service sink 10 that embodiment that the invention will now be described in detail with reference to the accompanying drawings provides.
Referring to Figure 2 together and Fig. 3, what service sink 10 had first chamber 1 and be connected to first chamber 1 first is open 1a
With outlet 1b, be provided with cleaning part 11 in first chamber 1, cleaning part 11 there is second chamber 2 and be connected to second chamber 2 the
Two opening 2a, and the second opening 2a and the first opening 1a is arranged in the same direction.
Second chamber 2 has the side of the bottom surface 2b and connection bottom surface 2b and second opening 2a opposite with the second opening 2a
Wall 3, side wall 3 include upwardly extending the first side wall 3a of preset distance by bottom surface 2b and being located at the first side wall 3a and second to be open
Second sidewall 3b between 2a, second sidewall 3b are along the tapered setting of first direction X by the opening of bottom surface 2b to second 2a.
Liquid feed device 20 is provided in the cleaning solution to service sink 10 of regime flow as a result, the wall portion and cleaning of first chamber 1
Space between portion 11 is used to clean the inner wall of specimen needle N, and the second chamber 2 of cleaning part 11 is used to clean the outer wall of specimen needle N,
The region of the end 3mm of general only cleaning specimen needle N, cleaning solution flow out to pumping equipment 30 by exporting 1b.
Specifically, refering to Fig. 4, cleaning solution cleans its inner wall, and liquid feed device during flowing out from specimen needle N
The flow q of 20 offers is bigger, and the inner wall washing of specimen needle N must be cleaner.When specimen needle N is moved to the second chamber of cleaning part 11
When being h in 2 and at a distance from bottom surface 2b, the cleaning solution fluid flowed out from specimen needle N impacts the bottom surface of second chamber 2 first
2b, and quickly flowed to the two sides of bottom surface 2b, under the action of the first side wall 3a, cleaning solution fluid is anti-by bottom surface 2b's
Bullet moves upwards, and occurs flowing commutation under the action of the second sidewall 3b of tapered setting, and guidance cleaning solution fluid cleans sample
The outer wall of this needle N.
There are the losses of momentum during cleaning solution fluid moves in second chamber 2, so that flowing out from specimen needle N clear
There are speed differences between cleaning solution fluid after wash fluids and the commutation of side wall 3, to form vortex at second sidewall 3b.Clearly
Flow q can reduce when washing lotion flows through second sidewall 3b, and the pressure of cleaning solution is caused to increase, to be conducive to clean specimen needle N's
Outer wall.Meanwhile second sidewall 3b also limits cleaning solution to a certain extent and overflows from the second opening 2a.
Service sink 10 provided by the invention has tapered second side by being arranged in the cleaning part 11 of first chamber 1
The second chamber 2 of wall 3b, so that cleaning solution can form vortex in second chamber 2, to improve the cleaning effect of specimen needle N,
It is allowed to meet the standard requirements of residual contamination rate, and at low cost, convenient for safeguarding.
Referring again to Fig. 3, as previously mentioned, second sidewall 3b along by bottom surface 2b to second be open 2a first direction X gradually
Contracting setting, wherein be in predetermined angle between second sidewall 3b and the first side wall 3a.Experiment proves that the value of predetermined angle
When range is 5 °≤α≤15 °, cleaning solution can effectively be inhibited to overflow from the second opening 2a.
In addition, second chamber 2 is L1 along the first depth dimensions of first direction X, the first side wall 3a is upward by bottom surface 2b
Preset distance L≤0.5L1 of extension.The bottom surface 2b of second chamber 2 can be any in plane, spherical and tapered surface
Person.Rebound is moved upwards after bottom surface 2b since cleaning solution fluid impacts, and the own form of spherical, tapered surface has
Guiding role so that the speed loss of cleaning solution fluid relative to bottom surface 2b be plane when speed loss it is smaller.
It should be noted that when bottom surface 2b be spherical or tapered surface when, between specimen needle N and bottom surface 2b away from
From the distance between the top that h refers to minimum range, i.e. specimen needle N and spherical or tapered surface h.
Second chamber 2 can be any one of round hole, elliptical aperture and strip-shaped hole along the cross section of first direction X.The
One chamber 1 can be round hole or slotted eye along the cross section of first direction X, and the embodiment of the present invention is with first chamber 1, the
Two chambers 2 along the cross section of first direction X be round hole for be illustrated.
Further, be further provided in first chamber 1 support cleaning part 11 reinforcing rib 12, and reinforcing rib 12,
The accommodation space that can accommodate specimen needle N is formed between cleaning part 11 and first chamber 1.The quantity of reinforcing rib 12 can be one
It is a or more than two, wall portion circumferentially-spaced distribution of more than two reinforcing ribs 12 along first chamber 1.Preferably, cleaning part
11 are located at the middle part of first chamber 1, so that the space between the wall portion of first chamber 1 and cleaning part 11 is all phase in either direction
Deng, convenient in the inner wall of any position in space specimen needle N capable of washing.
Refering to Fig. 5, cleaning part 11 offers multiple overflows through second sidewall 3b at the position of the second opening 2a
Slot 4, and overflow launder 4 is along second depth dimensions L2≤0.5L1 of first direction X.Since cleaning solution is formed in second chamber 2
Generate biggish hydraulic pressures during vortex, setting overflow launder 4 can discharge the Fluid pressure of cleaning solution, make cleaning solution from
It overflows, and is flowed in the space between the wall portion of first chamber 1 and cleaning part 11 in the overflow launder 4, finally from outlet 1b discharge
Into pumping equipment 30.
When the quantity of overflow launder 4 is even number, such as 4, it can be symmetrical arranged, it, can be with when the quantity of overflow launder 4 is odd number
It is uniformly distributed in the circumferential direction of the second opening 2a, with the pressure of balance purge liquid.
Illustrate referring to Figure 6 together with Fig. 7, the section view for respectively illustrating another service sink provided in an embodiment of the present invention
Figure and schematic top plan view.During due to cleaning specimen needle N, cleaning solution is inevitably from the first opening of service sink 10
Sputter and influence the reliability of test equipment.For this purpose, the wall portion of the first chamber 1 of service sink 10 provided in an embodiment of the present invention
It is further provided with one or more baffle 13 for being located at 11 top of cleaning part, one or more baffle 13 is by wall portion direction
The inner space of first chamber 1 extends, and is led to forming the spiralling rotation for being open 1a towards first in first chamber 1
Road, and be formed in first chamber 1 and accommodate the accommodation space that specimen needle N is moved along desired trajectory.The desired trajectory refers to
The second of first position P1 of the specimen needle N between the wall portion and cleaning part 11 of the first chamber 1 of service sink 10 and cleaning part 11
The track moved back and forth between the second position P2 of chamber 2, as shown in Figure 6.
The spiralling rotating channel that one or more baffle 13 is formed can stop cleaning solution from the first opening 1a
Splashing is gone out, and remaining cleaning solution is made slowly to flow down along rotating channel under the effect of gravity and not end up at gear
On piece 13.Spiralling purpose, which also resides in, makes baffle 13 have different inclined-planes, prevents cleaning solution shape in some plane
At the bubble chamber film being difficult to clean off.
Preferably, the quantity of baffle 13 is multiple, and each baffle 13 is towards the first opening 1a inclination, and multiple baffles 13 are along the
The circumferential direction of one chamber 1 is helically ladder-like to be distributed to form rotating channel.Baffle 13 towards first opening 1a be obliquely installed, be for
By the guide functions of baffle 13, the cleaning solution under gear is made along the surface of the inclined baffle 13 to flow to first chamber 1
Wall portion avoids cleaning solution from splashing on the outer wall of specimen needle N.
The helix angle β of each baffle 13 is related with the internal diameter of first chamber 1, and internal diameter is bigger, helix angle β's
Value is bigger.Preferably, the value range of the helix angle β of each baffle 13 are as follows: 15 °≤β≤25 °.
Further, two adjacent baffles 13 have predetermined space on X in a first direction, and the predetermined space is smaller more to be held
The bubble chamber film of covering baffle 13 is easily formed, therefore when structure size allows, two adjacent baffles 13 should be increased as far as possible and existed
Predetermined space on first direction X.In addition, two adjacent baffles 13 are in continuously distributed in the circumferential, the closing of 360 ° of formation
Ring, so as to prevent cleaning solution from circumferentially overflowing.
Wherein, it is open 1a's along first direction X close to the baffle 13 of the first opening 1a in multiple baffles 13 and far from first
Interval of the baffle 13 in a first direction on X is larger, and cleaning solution rebounds splashing between in order to prevent, therefore the two is in the circumferential
Partly overlap setting.
In addition, the side of each wall portion of the baffle 13 far from first chamber 1 is formed with the edge of indent, multiple baffles 13
Edge forms predetermined accommodation space.Predetermined accommodation space in the plane vertical with first direction X be projected as strip-shaped hole 14 or
Person's slotted eye 14, as shown in Figure 7.The predetermined accommodation space answers smaller get in the case where meeting the desired trajectory of specimen needle N
It is good, to prevent cleaning solution from splashing away out of this accommodation space as much as possible.
Service sink 10 generally passes through Shooting Technique or other works using transparent plastic materials such as acrylic or polycarbonate
Skill makes.The baffle 13 of the wall portion setting of the first chamber 1 of service sink 10 is actually being set due to the limitation of such as Shooting Technique
In meter, first chamber 1 is assembled in by way of being clamped or being bonded after one or more baffle 13 being processed
Wall portion.
As an alternative embodiment, the structure of one or more 13 part of baffle can be separately as a group
Part, and be detachably connected with service sink 10.Since the wall portion of baffle 13 and first chamber 1 is possible to meeting remaining cleaning fluid, by this
Component is detachably connected with service sink 10, in order to clean or replace the component at any time.
As a result, refering to Fig. 9, shows another cleaning device provided in an embodiment of the present invention and remove liquid feed device 20 and row
The structural schematic diagram of liquid device 30.The cleaning device is similar with the structure of cleaning device shown in FIG. 1, the difference is that, clearly
Cleaning device further comprises the anti-overflow device 40 for being removably covered on the first opening 1a of service sink 10.Anti-overflow device 40 has
Accommodate the accommodation space that moves along desired trajectory of specimen needle N, and for preventing cleaning solution during cleaning specimen needle N from the
One opening 1a overflows.
Specifically, anti-overflow device 40 includes: body part 41 and be set in the body part 41 one or more
A baffle 42.
Body part 41 is the ring structure body with inner hole 41c, and inner hole 41c can be round hole or slotted eye, sheet
Inventive embodiments are illustrated by taking round hole as an example.Body part 41 has opposite first end 41a and the along the axial direction of inner hole 41c
Two end 41b, anti-overflow device are covered on the first opening 1a of service sink 10 by second end 41b.
One or more baffle 42 by inner hole 41c wall portion radially extending along inner hole 41c, with the shape in inner hole 41c
It is radially formed with predetermined accommodation space at spiralling rotating channel, and in inner hole 41c, to accommodate specimen needle N along pre-
Fixed track is mobile.The desired trajectory refers to specimen needle N between the wall portion and cleaning part 11 of the first chamber 1 of service sink 10
First position P1 and cleaning part 11 second chamber 2 second position P2 between the track that moves back and forth, as shown in Figure 9.
The spiralling rotating channel that one or more baffle 42 is formed can stop cleaning solution from the first opening 1a
It overflows, and remaining cleaning solution is made slowly to flow down along rotating channel under the effect of gravity and not end up at baffle 42
On.Make baffle 42 that there is different inclined-planes in addition, spiralling purpose also resides in, prevents cleaning solution shape in some plane
At the bubble chamber film being difficult to clean off.
Anti-overflow device 40 provided by the invention is capable of forming spiral by being arranged in the inner hole 41c of body part 41
Rotating channel baffle 42, can prevent cleaning solution from overflowing from the service sink of cleaning device, and structure is simple, be easy to real
It is existing.
The specific structure of anti-overflow device 40 is further described with reference to the accompanying drawing.
Also referring to Fig. 9 and Figure 10, it is preferable that the quantity of baffle 42 be it is multiple, each baffle 42 is towards first end 41a
Inclination, multiple baffles 42 along inner hole 41c circumferential direction helically it is ladder-like be distributed to form rotating channel.Baffle 42 axially towards
First end 41a is obliquely installed, and is the guide functions in order to pass through baffle 42, is made the cleaning solution under gear along the inclined baffle 42
Surface flow to the wall portion of inner hole 41c, avoid cleaning solution from splashing on the outer wall of specimen needle N.
The helix angle β of each baffle 42 is related with the internal diameter of first chamber 1, and internal diameter is bigger, helix angle β's
Value is bigger.Preferably, the value range of the helix angle β of each baffle 13 are as follows: 15 °≤β≤25 °.
Further, two adjacent baffles 42 have predetermined space, the smaller easier shape of the predetermined space in the axial direction
At the bubble chamber film of covering baffle 42, therefore when structure size allows, two adjacent baffles 42 should be increased as far as possible in axial direction
On predetermined space.In addition, two adjacent baffles 42 are continuously distributed in the circumferential, 360 ° of closed-loop is formed, so as to
Prevent cleaning solution from circumferentially overflowing.
Wherein, exist axially move closer to the baffle 42 of second end 41b in multiple baffles 42 and close to the baffle 42 of first end 41a
Interval in axial direction is larger, and cleaning solution rebounds splashing between in order to prevent, the setting therefore the two partly overlaps in the circumferential.
Specifically, the baffle 42 in multiple baffles 42 close to second end 41b meets formula along the circumferential angle, θ 1 of inner hole
(1), remaining baffle meets formula (2) along the circumferential angle, θ 2 of inner hole:
θ1>360/n (1)
θ 2=360/n (2)
Wherein, n is the quantity of multiple baffles 42.
The cleaning solution to splash out of service sink 10 as a result, is when by the baffle 42 of close second end 41b, by the baffle
The cleaning solution of 42 circumferential one end can be blocked by adjacent baffle 42 and be rebounded back in service sink 10, by the week of the baffle 42
It is directly rebounded back in service sink 10 to the cleaning solution of the other end.
Further, each baffle 42 is formed with the edge of indent, the edge of multiple baffles 42 far from the side of inner hole 41c
Form predetermined accommodation space.The predetermined accommodation space is being projected as strip-shaped hole 45 or ellipse in axially vertical plane
Hole 45.Predetermined accommodation space answered in the case where meeting the desired trajectory of specimen needle N it is the smaller the better, to prevent from cleaning as much as possible
Liquid splashes away out of this accommodation space.
Refering to fig. 11, it is preferable that the quantity of baffle 42 is four, and predetermined accommodation space includes corresponding in inner hole 41c
The second position P2 of mandrel line, in four baffles 42 two adjacent baffles 42 far from the side of inner hole 41c be respectively formed with
Inner hole 41c is coaxial and 1/4 arc edge 43 of indent, other two baffle 42 far from the side of inner hole 41c be respectively formed with by
The special-shaped edge 44 of straightway and 1/4 circular arc of indent composition, two 1/4 arc edges 43 and two common shapes in special-shaped edge 44
It is in strip hole 45.
Refering to fig. 12, as an alternative embodiment, two baffles 42 adjacent in four baffles 42 are far from inner hole
The side of 41c is respectively formed with the first curved edge 46 coaxial with inner hole 41c and indent, other two baffle 42 is far from inner hole
The side of 41c is respectively formed with the second curved edge 47, and two the first curved edges 46 and two the second curved edges 47 are common
Form slotted eye 45.
It is understood that second position P2, that is, cleaning part 11 position in the desired trajectory of specimen needle N can also position
In the other positions of first chamber, so that the edge of four sides of the baffle 42 far from inner hole 41c of anti-overflow device 40 be made to distinguish
With other shapes, and it is not limited to Fig. 9 or structure shown in Fig. 10.
In addition, the second end 41b of body part 41 is provided with the groove 48 along axial depression, the first opening 1a energy of service sink
It enough protrudes into groove 48, as shown in Figure 10.
As an alternative embodiment, the second end 41b of body part 41 is provided with and outwardly protrudes around inner hole 41c
Flange 48, flange 48 can extend into the first opening of service sink.
Refering to fig. 13, the embodiment of the invention also provides a kind of specimen needles using foregoing any cleaning device
Cleaning method, the specimen needle cleaning method include the following steps:
Step S1: specimen needle N is protruded into the first position between the wall portion and cleaning part 11 of the first chamber 1 of service sink 10
P1。
Step S2: supply cleaning solution to specimen needle N flows out cleaning solution from specimen needle N, to clean the inner wall of specimen needle N.
The time for cleaning the inner wall of specimen needle N can be such as 1s.
Step S3: specimen needle N is moved to the second position P2 of the second chamber 2 of cleaning part 11 from first position P1.
Step S4: supply cleaning solution to specimen needle N makes the cleaning solution flowed out from specimen needle N in the bottom surface of second chamber 2
Vortex is formed between 2b and side wall 3, to clean the outer wall of specimen needle N.The flow velocity of cleaning solution is less than cleaning when due to cleaning outer wall
The flow velocity of inner wall, therefore the time for cleaning outer wall can be more slightly longer than the time of inner wall, such as can be 3s.
Specimen needle N distance h, second sidewall 3b and first between bottom surface 2b of the second position P2 with second chamber 2
Predetermined angle and liquid feed device 20 between side wall 3a have an impact for flow velocity of the flow quantity q to cleaning solution, and flow velocity
Bigger, the cleaning effect of specimen needle N is better.The internal diameter of specimen needle N is generally taken as 0.8~1.2mm, it is contemplated that fluid path pressure is negative
It carries, when condition of the actual flow q formula (3) of specimen needle N can effectively clean the sample residual of probe inner wall.
252mL/min < q < 320mL/min (3)
Below at a predetermined angle α=8 °, liquid feed device 30 flow q meet the requirement of formula (3) under conditions of, analyze sample
Influence of height h of the needle N in the second chamber 2 of service sink 10 to the flow velocity of cleaning solution.
Also referring to Figure 14,15 and 16, the end region 3mm of specimen needle N when respectively illustrating h=1mm, 5mm and 7mm
The distribution map of the flow velocity of interior cleaning solution.As can be seen that the flow rates are 1~2m/s when h=1mm；Flow velocity when h=5mm
Range is 1.5~2.0m/s, and more evenly, variable gradient is smaller for velocity flow profile when relative to h=1；Flow velocity model when h=7mm
It encloses for 0.02~0.5m/s, flow velocity is obviously reduced, and cleaning effect is bad.By experimental verification, second position P2 and second chamber 2
The distance between bottom surface 2b h value range are as follows: 3mm≤h≤5mm.At this time the flow rates of cleaning solution be 1.5~
2.0m/s, the cleaning solution flow q for meeting this flow velocity also can achieve the requirement of formula (3).
By taking h=4mm as an example, cleaning solution is supplied according to the requirement of above-mentioned flow q, the clinical trial specified using manufacturing enterprise
The reagent of project, using enriched sample and zero-dose sample as sample, according to enriched sample, enriched sample, high concentration
Sample, zero-dose sample, zero-dose sample, zero-dose sample sequence be one group, be measured on analyzer, carry out 5 altogether
Group measurement, and according to every group of formula (4) calculating of residual contamination rate K.Test data is as shown in table 1.
In formula (4), A4For the measured value of the 4th sample in every group；A6For the measured value of the 6th sample in every group；AIt is formerFor height
Concentration samples.
Test data is as shown in table 1, from the test data in table 1 it is found that residual contamination rate is respectively less than 10ppm, meets doctor
Medicine professional standard YY/T1155-2009 " full-automatic illumination immunity analysis instrument " is about residual contamination rate≤10ppm test request.
1 residual contamination rate test data of table (residual contamination rate unit: ppm)
Specimen needle cleaning method provided in an embodiment of the present invention improves specimen needle N using foregoing cleaning device
Cleaning effect, be allowed to meet the standard requirements of residual contamination rate, and at low cost, convenient for safeguarding.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (16)
1. a kind of service sink, for cleaning specimen needle, which is characterized in that the service sink has first chamber and with described first
First opening of chamber and outlet, are provided with cleaning part in the first chamber, the cleaning part have second chamber and
The second opening being connected to the second chamber, and second opening and the first opening arrangement in the same direction；
The second chamber has the bottom surface opposite with second opening and connect the bottom surface and second opening
Side wall, the side wall include upwardly extended by the bottom surface preset distance the first side wall and be located at the first side wall with
Second sidewall between second opening, the second sidewall is along the first direction by the bottom surface to second opening
Tapered setting.
2. service sink according to claim 1, which is characterized in that in pre- between the second sidewall and the first side wall
Determine angle [alpha], the value range of the predetermined angle are as follows: 5 °≤α≤15 °.
3. service sink according to claim 1, which is characterized in that first depth of the second chamber along the first direction
Degree is having a size of L1, and the first side wall is L by the preset distance that the bottom surface upwardly extends, and L≤0.5L1.
4. service sink according to claim 3, which is characterized in that the cleaning part is at the position of second opening
The overflow launder through the second sidewall is offered, and the overflow launder is along the second depth dimensions of the first direction
L2, and L2≤0.5L1.
5. service sink according to any one of claims 1 to 4, which is characterized in that the bottom surface be plane, spherical and
Any one of tapered surface.
6. service sink according to any one of claims 1 to 4, which is characterized in that the second chamber is along the first party
To cross section be any one of round hole, elliptical aperture and strip-shaped hole.
7. service sink according to claim 1, which is characterized in that the wall portion of the first chamber, which is further provided with, to be located at
One or more baffle above the cleaning part, one or more of baffles are by the wall portion towards first chamber
The inner space of room extends, to form the spiralling rotating channel towards first opening in the first chamber,
And it is formed in the first chamber and accommodates the accommodation space that the specimen needle is moved along desired trajectory.
8. service sink according to claim 7, which is characterized in that the quantity of the baffle is multiple, each baffle
Towards it is described first opening inclination, multiple baffles along the first chamber circumferential direction helically it is ladder-like be distributed to be formed
State rotating channel.
9. service sink according to claim 8, which is characterized in that the value range of the helix angle β of each baffle
Are as follows: 15 °≤β≤25 °.
10. service sink according to claim 9, which is characterized in that two adjacent baffles are in the first direction
It is upper that there is predetermined space and continuously distributed in the circumferential direction, along the first direction close to described the in multiple baffles
The baffle of one opening partly overlaps in the circumferential direction with the baffle far from first opening.
11. service sink according to claim 7, which is characterized in that each wall of the baffle far from the first chamber
The side in portion is formed with the edge of indent, and the edge of multiple baffles forms the predetermined accommodation space.
12. service sink according to claim 11, which is characterized in that the predetermined accommodation space with the first direction
Strip-shaped hole or slotted eye are projected as in vertical plane.
13. a kind of cleaning device characterized by comprising
Liquid feed device is connected to one end of the specimen needle with inner and outer wall, to provide the cleaning solution for cleaning the specimen needle；
Such as the described in any item service sinks of claim 1 to 12, the other end of the specimen needle passes through described in the service sink the
One opening protrudes into the first chamber, wherein the space between the wall portion of the first chamber and the cleaning part is for cleaning
The inner wall of the specimen needle, the second chamber of the cleaning part are used to clean the outer wall of the specimen needle, institute
Cleaning solution is stated to flow out by the outlet；And
Pumping equipment, the outlet with the service sink.
14. cleaning device according to claim 13, which is characterized in that the cleaning device further comprises removably
It is covered on the anti-overflow device of first opening, the anti-overflow device, which has, accommodates the appearance that the specimen needle is moved along desired trajectory
Receive space, and for preventing the cleaning solution during clean specimen needle from the first opening spilling.
15. a kind of specimen needle cleaning method using cleaning device according to claim 13 or 14, which is characterized in that described
Specimen needle cleaning method includes the following steps:
Specimen needle is protruded into the first position between the wall portion and cleaning part of the first chamber of service sink；
Cleaning solution is supplied to the specimen needle, flows out the cleaning solution from the specimen needle, to clean the institute of the specimen needle
State inner wall；
The specimen needle is moved to the second position of the second chamber of cleaning part from the first position；
The cleaning solution is supplied to the specimen needle, makes the cleaning solution flowed out from the specimen needle in the second chamber
Vortex is formed between bottom surface and side wall, to clean the outer wall of the specimen needle.
16. specimen needle cleaning method according to claim 15, which is characterized in that the second position and second chamber
The value range of the distance between the bottom surface of room h are as follows: 3mm≤h≤5mm.
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| CN201811101998.9A CN109201640B (en) | 2018-09-20 | 2018-09-20 | Cleaning pool, cleaning device and sample needle cleaning method |
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