CN101514952B - Installation structure of sample analyzer converter and installing method thereof - Google Patents
Installation structure of sample analyzer converter and installing method thereof Download PDFInfo
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- CN101514952B CN101514952B CN2009100202159A CN200910020215A CN101514952B CN 101514952 B CN101514952 B CN 101514952B CN 2009100202159 A CN2009100202159 A CN 2009100202159A CN 200910020215 A CN200910020215 A CN 200910020215A CN 101514952 B CN101514952 B CN 101514952B
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- conical pilot
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Abstract
The invention discloses an installation structure of a sample analyzer converter and an installing method thereof. The installation structure of the sample analyzer converter comprises a converter and an installation base which is jogged with the converter through an embedding clamp hole and is arranged at the head of a sampler. The embedding clamp hole is provided with a taper guide hole at an assembling end of the converter, and a section of the embedding clamp hole matched with the converter is in interference fit with the converter; and correspondingly, the installation base is made from material with the thermal expansion coefficient similar to the converter. The invention provides the installation structure of the sample analyzer converter with simple structure and high sealing grade and also provides the installing method of the installation structure.
Description
(1) technical field
The present invention relates to a kind of mounting structure and installation method thereof of sample analyzer converter, particularly, relate to a kind of mounting structure and installation method thereof that is used for the sample analyzer converter of Coulter principle.Ku Ertefa claims electric-resistivity method, electric pulse method or electro-induction district technology again, because of it belongs to measurement and three-dimensional measurement to individual particles, not only can accurately measure the size distribution of material, more can do the measurement of particle absolute number and concentration.
(2) background technology
Individual particles detection range sample analyser commonly used carries out the analysis of number of particles and concentration at present, and said sample analyser is such as the blood analyser of medical domain, generally based on Coulter principle.With the blood analyser is example; Its detection head top is provided with converter and detects to be used for number of particles; For the excellent sealing that guarantees that converter cooperates with detection head, need add sealing gasket on said converter two sides usually, with screw it is fastened on the detection head top again and seals.The converter mounting structure of using this mounting means has the comparison excellent sealing ability; Yet after long-time the use; Be attached with blood tissues such as hyperglobulinemia, azelon in the gap of above-mentioned converter and sealing gasket, and then the micropore that can cause being used to detect on the said converter stops up.And because said micropore is very little, tamper is difficult to wash.Sealing gasket possibly cause a large amount of molecules to come off because of aging in addition, and the molecule that comes off can influence accuracy of test.In addition; Screw is fastening to exist the inherent shortcoming of destroying matrix strength, and each sealing gasket fixed by at least three gib screws usually, if the screw pretightning force is inhomogeneous; Will inevitably cause the distortion of sealing gasket; And can't guarantee the right alignment of converter and counting aperture, and and then cause sealing grade to reduce, cause the measuring chamber leakage.
(3) summary of the invention
Therefore, the present invention provides a kind of simple in structure in order to overcome the above-mentioned defective of available sample analyzer converter mounting structure, the mounting structure of its converter of sample analyser that sealing grade is high, and the installation method of this mounting structure is provided.
The present invention adopts following technical scheme:
The mounting structure of this invention sample analyzer converter; Comprise converter and the mount pad that is positioned at the sampling thief head through the chimeric said converter of embedding folder hole; Said embedding folder hole is provided with conical pilot hole at the end of packing into of converter, and is interference fit with converter section of cooperating and converter; Correspondingly, said mount pad adopts the material close with the converter thermal expansivity to process.
Starting point of the present invention is to solve through the mode of giving up fixing fitting the existing problem of present converter installation method; And mostly known converter is the cylindrical structural of sheet type; The machining precision of self is than higher; Whereby, adopt the mode of cooperation really up to the mark to realize the assembling of converter on detection head.
Can know according to technical scheme of the present invention,, also, make sampled result have more representativeness with regard to the thorough problem of polluting liquid to be detected because of the aging molecule that produces of seal that solved owing to abandoned fixing fitting and seal thereof.On the other hand, do not had fixing fitting, also just corresponding hole needn't be set on the mount pad of converter, detection head intensity is able to guarantee.
Specific to interference fit itself; We know that this fit system is used for being fastenedly connected of hole, between centers, does not allow to have relative motion between the two, in addition; Because the tolerance range in hole is under the tolerance range of axle; Therefore, the problem of leakage can be effectively avoided, also now the poorly sealed problem that causes leakage maybe be caused through the fixing fitting stationary transducer with regard to having solved.On the other hand, the adhesion between two members of formation interference fit is bigger, can be competent at the fixedly tightness requirement in the pattern detection fully.
In addition, consider from cost that because the technical requirement of cooperation really up to the mark, the embedding folder hole machining precision that is used for technical scheme of the present invention is higher than the machining precision of original embedding folder hole, at this, its cost increases.But owing to given up securing member and seal and assembling thereof, whole cost does not increase; On the other hand, its assembly structure is compact more, and this version is more suitable in sample analyser class exact instrument.
Consider that from assembling self in order to obtain to constitute the preferably bond strength of above-mentioned assembly structure under condition of different temperatures, said mount pad adopts the material close with the converter thermal expansivity to process.Mostly present converter is diamond material, and converter is called as the jewel sheet under many circumstances, and its thermal expansivity is known, and the close with it material of thermal expansivity is very many, organic material especially, and selection range is also wide.
To the assembling of two members of above-mentioned interference fit, said embedding folder hole is provided with conical pilot hole at the end of packing into of converter for eaily.The chamfering because converter is not easy to do is so adopt the mode of pilot hole proper.
Above-mentioned mounting structure based on the converter of technical scheme of the present invention the invention provides the installation method to this new mounting structure.It may further comprise the steps:
1) mount pad is fixed, made its conical pilot hole upwards;
2) pick up converter, and align said conical pilot hole;
3) move down converter to said mount pad upper surface, adjust that it is parallel with mount pad top face;
4) move down converter to conical pilot hole bottom surface, and make the converter upper bottom surface evenly stressed, the cooperation section that is pressed into the embedding folder hole is until its upper bottom surface and said guiding bellmouth bottom surface coplanar.
The mounting structure of above-mentioned sample analyzer converter, the upper bottom surface of said converter is concordant with the bottom surface of conical pilot hole.
The machining precision of said embedding folder hole is the IT7 level, and the right alignment of itself and said converter is less than 6 μ m.
The tapering of said conical pilot hole is 1: 1.
The right alignment of said conical pilot hole and said converter is less than 6 μ m.
The installation method of above-mentioned sample analyzer converter, the instrument that picks up said converter adopts vacuum cup.
Can also adopt a bottom surface to have the assembling drift of shape corresponding to the locator protrusions of converter upper grooves for said instrument, wherein said bottom surface is the load-carrying surface of profile less than said converter upper bottom surface; Before picking up converter, need at the converter upper bottom surface or assemble the drift bottom surface to be coated with adhesive.
The installation method of above-mentioned sample analyzer converter, said adhesive are water.
(4) description of drawings
Specify the present invention below in conjunction with Figure of description, make those skilled in the art better understand the present invention, wherein:
Fig. 1 is a kind of structural representation of the mounting structure of specific embodiment of the invention sample analyzer converter.
Fig. 2 is the structural representation of the used assembling drift of the specific embodiment of the invention.
Among the figure: 1, mount pad, 2, converter, 3, groove, 4, the sampling aperture, 5, upper bottom surface, 6, conical pilot hole, 7, the embedding folder hole, 8, bottom surface, 9, positioning convex, 10, the assembling drift.
(5) embodiment
With reference to Figure of description 1 and 2; The mounting structure of present embodiment sample analyzer converter; Comprise converter 2 and the mount pad that is positioned at the sampling thief head 1 through embedding folder hole 7 chimeric said converters; Said embedding folder hole is provided with conical pilot hole 6 at the end of packing into of converter, and is interference fit with converter section of cooperating and converter; Correspondingly, said mount pad adopts the material close with the converter thermal expansivity to process.
For simplified structure with prevent that liquid flowing speed from producing the bend pipe flow resistance loss, the upper bottom surface 5 of said converter is concordant with the bottom surface of conical pilot hole.
The machining precision of said embedding folder hole is the IT7 level, and the right alignment of itself and said converter is less than 6 μ m.Usually axis hole cooperates desired machining precision generally in IT5～IT8 level, more than the IT7 level, and every increase extra fine grade, cost all will increase by 1～2 times, therefore, and the preferred IT7 level of this programme machining precision, cost is moderate.And because the about 3.5cm of converter diameter, the surfaceness under this precision satisfies the installation accuracy of converter fully in the 1/100mm level.
Consider that converter is thinner, install that the tapering of said conical pilot hole is 1: 1, promptly can reduce the destruction to mount pad intensity, has enough spaces can adjust the degree of freedom of converter again for the ease of it.
The right alignment of said conical pilot hole and said converter makes converter stressed even in installation, and reduces the additional load that produces because of rigging error under its installment state less than 6 μ m, improves its serviceable life.
To the mounting structure of above-mentioned sample analyzer converter, present embodiment adopts the installation method of following sample analyzer converter, and it may further comprise the steps:
1) mount pad 1 is fixing, make its conical pilot hole upwards;
2) pick up converter, and align said conical pilot hole;
3) move down converter to said mount pad upper surface, adjust that it is parallel with mount pad top face;
4) move down converter to conical pilot hole bottom surface, and make the converter upper bottom surface evenly stressed, the cooperation section that is pressed into the embedding folder hole is until its upper bottom surface and said guiding bellmouth bottom surface coplanar.
The instrument that picks up said converter can adopt vacuum cup routinely, utilizes vacuum cup that the suction of flakelet is accomplished assembling.
Tend to adopt a bottom surface 8 to have the assembling drift 10 of shape corresponding to the locator protrusions 9 of converter upper grooves 3 for the said instrument present embodiment that picks up converter, wherein said bottom surface is the load-carrying surface of profile less than said converter upper bottom surface; Before picking up converter, need at the converter upper bottom surface or assemble the drift bottom surface to be coated with adhesive.Can utilize the positioning action of said positioning convex well converter to be carried out assembling and positioning like this, and the bottom surface of assembling drift and the upper bottom surface face contact matching of converter make converter stressed even in assembling process, to obtain reasonable assembly precision.
Because converter belongs to flakelet spare; So said adhesive can make water,, utilize the bonding force of water can adhere to converter fully because the bottom surface and the positioning convex contact area of converter upper bottom surface and groove and assembling drift are big; And the cost of water is low, also is convenient to remove.
Claims (7)
1. the mounting structure of a sample analyzer converter; Comprise converter (2) and the mount pad that is positioned at the sampling thief head (1) through the chimeric said converter of embedding folder hole (7); It is characterized in that: said embedding folder hole is provided with conical pilot hole (6) at the end of packing into of converter, and is interference fit with converter section of cooperating and converter; Correspondingly, said mount pad adopts the material close with the converter thermal expansivity to process; The machining precision of said embedding folder hole is the IT7 level, and the right alignment of itself and said converter is less than 6 μ m; The right alignment of said conical pilot hole and said converter is less than 6 μ m.
2. the mounting structure of sample analyzer converter according to claim 1, it is characterized in that: the upper bottom surface of said converter (5) is concordant with the bottom surface of conical pilot hole.
3. the mounting structure of sample analyzer converter according to claim 1, it is characterized in that: the tapering of said conical pilot hole is 1: 1.
4. the installation method of a sample analyzer converter as claimed in claim 1 is characterized in that it may further comprise the steps:
1) mount pad (1) is fixing, make its conical pilot hole upwards;
2) pick up converter, and align said conical pilot hole;
3) move down converter to said mount pad upper surface, adjust that it is parallel with the mount pad upper surface;
4) move down converter to conical pilot hole bottom surface, and make the converter upper bottom surface evenly stressed, the cooperation section that is pressed into the embedding folder hole is until its upper bottom surface and said conical pilot hole bottom surface coplanar.
5. the installation method of sample analyzer converter according to claim 4 is characterized in that: the instrument employing vacuum cup that picks up said converter.
6. the installation method of sample analyzer converter according to claim 4; It is characterized in that: the instrument that picks up said converter adopts a bottom surface (8) to have the assembling drift (10) of shape corresponding to the locator protrusions (9) of converter upper grooves (3), and the bottom surface that wherein assembles drift is the load-carrying surface of profile less than said converter upper bottom surface; Before picking up converter, need at the converter upper bottom surface or assemble the drift bottom surface to be coated with adhesive.
7. the installation method of sample analyzer converter according to claim 6, it is characterized in that: said adhesive is a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100202159A CN101514952B (en) | 2009-03-26 | 2009-03-26 | Installation structure of sample analyzer converter and installing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100202159A CN101514952B (en) | 2009-03-26 | 2009-03-26 | Installation structure of sample analyzer converter and installing method thereof |
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| CN101514952A CN101514952A (en) | 2009-08-26 |
| CN101514952B true CN101514952B (en) | 2012-07-04 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201397287Y (en) * | 2009-03-26 | 2010-02-03 | 山东兰桥医学科技有限公司 | Installation structure of sample analyzer converter |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201397287Y (en) * | 2009-03-26 | 2010-02-03 | 山东兰桥医学科技有限公司 | Installation structure of sample analyzer converter |
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Effective date of registration: 20200708 Address after: 117 / F, No. 166 Meiyue Road, pilot Free Trade Zone, Pudong New Area, Shanghai, 200131 Patentee after: Shanghai Lanqiao Biotechnology Co., Ltd Address before: Yaoqiang airport Licheng District 250013 Shandong road Ji'nan City, No. 7166 Patentee before: STAC MEDICAL SCIENCE & TECHNOLOGY Co.,Ltd. |
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