KR101922145B1 - Portable viscosity measuring device - Google Patents

Portable viscosity measuring device Download PDF

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Publication number
KR101922145B1
KR101922145B1 KR1020160049808A KR20160049808A KR101922145B1 KR 101922145 B1 KR101922145 B1 KR 101922145B1 KR 1020160049808 A KR1020160049808 A KR 1020160049808A KR 20160049808 A KR20160049808 A KR 20160049808A KR 101922145 B1 KR101922145 B1 KR 101922145B1
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capillary
main body
viscosity
capillary tube
unit
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KR1020160049808A
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Korean (ko)
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KR20170121420A (en
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김기태
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주식회사 디엠엑스
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Priority to KR1020160049808A priority Critical patent/KR101922145B1/en
Priority to PCT/KR2016/004302 priority patent/WO2017188462A1/en
Publication of KR20170121420A publication Critical patent/KR20170121420A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
    • G01N11/12—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring rising or falling speed of the body; by measuring penetration of wedged gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
    • G01N11/06—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by timing the outflow of a known quantity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/487—Physical analysis of biological material of liquid biological material
    • G01N33/49—Blood
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N35/1016—Control of the volume dispensed or introduced
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N2035/1027—General features of the devices
    • G01N2035/1034—Transferring microquantities of liquid
    • G01N2035/1039—Micropipettes, e.g. microcapillary tubes

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
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  • Molecular Biology (AREA)
  • Urology & Nephrology (AREA)
  • Food Science & Technology (AREA)
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  • Sampling And Sample Adjustment (AREA)

Abstract

The present invention relates to a portable viscosity measuring device for measuring a viscosity in accordance with the velocity of a drop falling in a fluid to be visually measured, and a portable viscosity measuring device which is simple to use and can be measured with a small amount of a viscous fluid , The viscosity is measured by simply using a capillary to be replaced with a disposable cap and then simply adjusting the suction of the fluid to be measured by the capillary to the lever.

Description

[0001] PORTABLE VISCOSITY MEASURING DEVICE [0002]

TECHNICAL FIELD The present invention relates to a portable viscosity measuring device for measuring a viscosity in accordance with the velocity of a drop falling in a fluid to be visually measured, and a portable viscosity measuring device which is simple to use and can be measured even with a fluid to be measured .

The viscosity of a fluid is the property of the fluid that resists flow when it flows.

The viscosity of such a fluid is an important factor indicating the flow characteristics for fluids such as blood, paint, ink, lubricant, liquid food or medicine, and is used for fluid analysis by measuring viscosity or viscosity with a viscometer.

When the viscosity of a fluid is required, most of the time it is necessary to collect the fluid and then immediately measure the viscosity of the fluid to analyze the fluid. Therefore, a viscometer that is easy and easy to measure is required.

In particular, the viscosity of blood has been used as an important item in the recent diagnosis of vascular disease. Furthermore, since the viscosity of the blood is measured from time to time in daily life, it is necessary to prevent the disease or cope with the risk in the early stage, and thus a viscometer capable of easily and easily measuring even ordinary individuals is required.

As a viscosity measuring method applied to a viscosity measuring apparatus, there is a method of measuring the velocity of a falling body by dropping the falling body freely in the fluid.

Such dropping body dropping method utilizes a phenomenon in which the dropping speed varies depending on the viscosity of the fluid, and as disclosed in Japanese Patent No. 4701442, the dropping body is accommodated and the vessel is vertically inverted, The fallen body is freely dropped in the blood, and the termination speed or acceleration of the falling body falling is detected to measure the viscosity. In Korean Patent No. 10-1458320, a plurality of microparticles are floated by using the means as described above, and the viscosity is measured by detecting the terminal sedimentation velocity. In Korean Patent Laid-Open No. 10-2015-0069221, the solution to be measured is sucked into the capillary according to the capillary phenomenon, and the drop is dropped in the capillary and the viscosity is measured.

However, the above-described conventional techniques are difficult to carry and use because of the large size of the apparatus. Therefore, it is difficult for a general individual to easily use the apparatus because of a complicated method for measurement. Also, It is also accompanied by an increase in cost when the disposable article is used as a disposable article.

JP 4701442 B2 Mar. 17, 2011. KR 10-1458320 B1 201.4.10.29. KR 10-2015-0069221 A 2015.06.23.

A problem to be solved by the present invention is to provide a method for measuring viscosity, which is simple in operation for measuring viscosity, is easy to handle, can be miniaturized, is suitable for use in a portable manner, And to provide a viscosity measuring device.

In order to accomplish the above object, the present invention provides a portable viscosimetry device capable of sucking a fluid to be measured by a capillary phenomenon and having a drop hollow body (11) capable of freely falling in the inside thereof, A tubular capillary (10); And a main body 100 which is removable inside the capillary tube 10 through an insertion port 101 at a lower end thereof and is portable to be hand held and handled.

The main body 100 includes a grip 110 having a discharge passage 112 for gripping an upper portion of the capillary 10 inserted through the insertion port 101 and communicating with the inside of the capillary 10; An operation lever part 120 for opening / closing the discharge passage 112; A sensor unit 130 disposed along the capillary 10 inserted therein for sensing a falling body 11 falling freely; A signal processing unit 180 for obtaining a viscosity based on a sensing value of the sensor unit 130; An interface unit 150 for outputting the obtained viscosity; .

The grasping portion 110 includes a tubular body that houses the upper end of the capillary tube 10 in the inner space 111 through a lower hole and includes a discharge passage 112 for communicating the inner space 111 with the outside, And the operation lever part 120 is inserted into the inner space 111 of the grip part 110 so that the lower end of the operation lever part 120 is inserted into the inner space 111 of the grip part 110, The opening / closing groove 121 is provided to open / close the opening / closing groove 121 by aligning the opening / closing groove 121 with the discharge passage 112 or by shifting.

Since the capillary tube 10 inserted into the main body 100 can be stably held in the capillary tube 10 and the capillary tube 10 can be connected to and disconnected from the capillary 10 by the operation of the lever, The flow of the fluid to be measured is controlled, and thus it is advantageous in that it can be easily used according to a simple procedure of using capillary insertion and lever operation.

Further, since the capillary is detached from the main body using the lever, the replacement of the capillary tube 10 also has a simple advantage.

1 is an exploded perspective view of a portable viscosimetry device according to an embodiment of the present invention;
2 is a perspective view of the main body 100 in which the capillary tube 10 is inserted in FIG.
FIG. 3 is a perspective view (a) and a side view (b) of the state in which the main body 100 is mounted on the stand 200 in FIG.
4 is a cross-sectional view of the capillary tube 10;
5 is a sectional view of the main body 100;
6 is an enlarged view of region A in Fig.
7 is an exploded perspective view of the main body 100;
8 is an enlarged view of a region B in Fig.
9 is a perspective view of the grip portion 110 and the operation lever portion 120. Fig.
10 is an exploded perspective view of the stand 200;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 3, the portable viscosimeter according to the embodiment of the present invention includes a capillary tube 10 having a transparent hollow tube shape for sucking a fluid to be visually measured through a capillary phenomenon, a capillary tube 10 The measurement accuracy is improved by stabilizing the posture through the main body 100 and the main body 100, which are interchangeably inserted and sucked in by the operation while the capillary tube 10 is inserted, And a stand 200 for use in adjusting the viscosity of the main body 100 to an appropriate value and measuring the viscosity according to an expected viscosity of the fluid to be measured.

1 to 3 illustrate a viscosity measurement procedure using the portable viscosimetry apparatus according to the present invention. As shown in FIG. 1, the capillary 10 is inserted into the capillary 10 through the insertion port 101, (See FIG. 2) so that the fluid to be visually measured is sucked into the capillary 10 by manipulating the operating protrusion 124 of the operating lever portion 120 as will be described later . Thereafter, as shown in FIG. 3, it is inserted into the body insertion port 223 formed in the mount 220 of the pedestal 200, and the result of the viscosity measurement output to the displayer 154 is confirmed. More specific viscosity measurement procedures include angle adjustment and detachment operations as described later.

4, the capillary tube 10 is a hollow tube for sucking a fluid to be viscometry by capillary action. The capillary tube 10 has not only a lower end where a fluid flows but also an upper end thereof. So that the flow of the fluid is facilitated by the capillary phenomenon. The material is satisfactory if it is made of a transparent material that can be visually seen from the outside, for example, it can be made of glass.

In addition, a drop body 11 having a diameter smaller than the inner diameter is provided on the inner peripheral surface of the upper side of the capillary tube 10 so that the capillary tube 10 can freely fall inside the capillary tube 10.

Here, the shape of the drop body 11 may not be limited to any one shape. For example, the shape of the drop body 11 may be spherical, cylindrical, angular, or the like, but preferably it is spherical or cylindrical.

Since the drop body 11 freely falls in a state in which the fluid to be measured is sucked into the capillary 10, it is preferable that the drop body 11 has an appropriate weight in consideration of an expected viscosity range of the fluid to be measured. Further, the inner diameter of the capillary tube 10 and the size / weight of the dropping body 11 depend on the kind of the fluid to be measured since the inner diameter of the capillary tube sucked by the capillary phenomenon is required depending on the kind of fluid to be viscometry It is recommended to set it to an appropriate value. As a specific example, if the viscosity fluid to be measured is blood, the capillary has an inner diameter of 0.9 to 1.1 mm and the drop body may be made of a material such as Fe, Ni, or Co having a diameter of 0.6 to 0.8 mm or a stainless steel material It can be made of a spherical metal.

In the embodiment of the present invention, the drop body (11) is fixed to the inner peripheral surface of the capillary tube (10) by using a compound that is well soluble in the fluid to be visually measured.

For example, in the case where the fluid to be viscously measured is blood, at least one of the groups including bovine serum albumin, sodium hydroxide, sodium chloride, sodium citrate, sodium acetate, potassium phosphate, potassium nitrate, glucose and lactose monohydrate Can be selected and used as the above compound. In the method of fixing the dropping body 11 in the capillary tube, the dropping body 11 coated with the above compound can be placed in the capillary tube 10 and freeze-dried.

As another example, when the fluid to be viscosified is a petroleum product, the compound should be selected appropriately among the lipophilic compounds.

The main body 100 includes a lower portion 100a for pushing the capillary tube 10 upward through the insertion port 101 at the lower end thereof, an intermediate portion 100b extending to the upper end of the lower portion 100a, And an upper portion 100c which is inclined at an upper end of the upper portion 100b at a predetermined angle.

The lower portion 100a of the main body 100 is configured to insert the remaining portion except for a lower portion of the capillary tube 10 into the interior of the capillary tube 10. The viewing window 102 is formed long in the vertical direction along the insertion portion of the capillary tube 10, The insertion site of the display unit 10 can be seen through the viewing window 102. [

The middle portion 100b of the main body 100 is formed as a round tubular body so as to be easily gripped by a hand so as to be suitable for portable use and is formed on the outer peripheral surface near the lower portion 100a, The lever hole 103 is formed with a bent shape by the bolts 100a. Here, the lever hole 103 is provided with a protrusion cover 125 to which an operation protrusion 124 of an operation lever portion 120 described later is fixed, and is exposed to the outside. Thus, the operation lever portion 120, The range is limited when rotating or advancing.

The middle portion 100b of the main body 100 has a structure for mounting the inphase portion 150 together with the upper portion 100c of the main body 100. [

The interface unit 150 receives a user's operation and informs the user of the information. The interface unit 150 includes an up / down button 151 for selecting a tilt of the main body 100, an on / off button 152 for on / off of the intermediate portion 100b, a displayer 154 for providing information on the upper surface of the upper portion 100c formed to be inclined rearward with respect to the intermediate portion 100b, And a lamp 153 for the lamp.

The lower portion 100a into which the capillary tube 10 is inserted may include a sensor portion 130, a guide portion 140 and an illumination portion 170, which will be described later, disposed along the capillary tube 10, A middle portion in which a relatively bulky operation lever portion 120, an up / down button 151, an on / off button 152, a signal processing portion 180, and a power source portion 160 are mounted, (100b) is configured to be small enough to easily grasp and manipulate by hand while accommodating the components to be mounted vertically. Since the upper portion 100c on which the display unit 154 is mounted needs to have a sufficient area in consideration of the readability of the screen output to the display unit 154, the structure having a relatively thin thickness and relatively larger area than the lower portion and the middle portion Respectively. Therefore, it is suitable for portable use.

9 is a perspective view of the main body 100 shown in Figs. 5 and 6, an exploded perspective view of the main body 100 shown in Figs. 7 and 8, and an exploded perspective view of the gripping portion 110 and the operation lever portion 120 The internal structure of the main body 100 will be described with reference to a perspective view.

The main body 100 has a grasping portion 110 for grasping the upper side of the capillary 10 to be inserted therein, a capillary tube 10 for controlling the suction of the fluid to be measured, An operation lever part 120 which can push the lower part 10 downward to be detached from the grip part 110, a detection part 120 disposed along the side surface of the capillary 10 inserted therein, A signal processing unit 180 for obtaining a viscosity based on the sensed values of the sensor unit 130 and the sensing unit 130 and an interface 150 for exposing the obtained viscosity to the outside of the main body for output and user operation And a power supply unit 160 for supplying power to the sensor unit 130 and the interface unit 150.

The inner structure of the main body 100 will be described in detail in the order of the lower portion 100a, the middle portion 100b and the upper portion 100c as follows.

As shown in FIGS. 5, 7 and 8, the lower portion 100a of the main body 100 is provided with a long inner passageway for inserting the capillary tube 10 through the insertion port 101 to be received therein.

A plurality of sensor units 130 are disposed in the inner passage of the lower portion 100a to sense the dropping bodies 11 falling inside the capillary tube 10 at different positions (different heights). That is, when the capillary tube 10 is inserted into the main body 100, a plurality of sensor units 130 are arranged at different heights below the drop body 11 to detect the falling of the drop body 11 sequentially .

Here, the sensor unit 130 is satisfactory if it can sense the drop body 11, and in the specific embodiment of the present invention, the sensor unit 130 is composed of a light emitting unit and a light receiving unit which face each other with the capillary tube 10 therebetween, To detect the point of time when the light irradiated toward the light receiving part is disturbed by the drop body (11). As another example, a magnetic field sensor may be used to detect when the magnetic field is disturbed by the drop body 11.

A plurality of illumination units 170 are arranged along the insertion portion of the capillary tube 10 so that the capillary tube 10 illuminated by the illumination unit 170 can be clearly seen from the outside through the transmission window 102. [

In order to stabilize the fine capillary tube 10, a guide portion 140 having a hole through which the capillary tube 10 penetrates is disposed when the inner passage is inserted transversely.

A grip portion 110 for gripping the upper side of the capillary tube 10 inserted into the inner passage is provided at the upper end of the inner passage of the lower portion 100a of the main body 100.

6, 8 and 9, the grip portion 110 is inserted into the inner passage of the lower portion 100a of the main body 100, passes through the upper portion of the capillary tube 10 and is received in the inner space 111 And is formed as a tubular body which is in close contact with the outer circumferential surface of the capillary tube 10 to seal it. The inner space 111 having the upper portion opened has a relatively larger inner diameter than the outer diameter of the capillary tube 10 and the discharge passage 112 is formed at one point in the frontal direction in the inner peripheral surface, .

Here, the grip 110 is made of rubber elastic material such as silicone rubber or rubber. The grip 110 is tightly sealed to the outer peripheral surface of the capillary 10 passing through the lower side hole, The upper end opening of the capillary tube 10 placed in the inner space can be communicated with the outside only through the discharge passage 112 by tightly sealing the outer peripheral surface of the operation lever portion 120, I will.

On the other hand, the hole through which the capillary 10 penetrates from the grip 110 to the inner space 111 is formed so that the inner diameter gradually narrows, so that the capillary 10 can pass through easily. In addition, an insertion guide portion 114 for guiding the capillary 10 with the hole is added to the outside of the hole. Here, the insertion guide portion 114 is provided with a hole whose inside diameter gradually narrows down to approximately the hole size of the grip portion 110.

6 and FIG. 6, in order to prevent the grip portion 110 from rotating together when the operation lever portion 120 inserted into the inner space 111 through the upper opening of the grip portion 110 rotates, 9, protrusions 113 facing each other are formed in the periphery of the discharge passage 112 in the outer peripheral surface of the grip portion 110 and protrusions 104 sandwiched between the protrusions 113 are inserted into the main body 100 ). The protrusion 104 at this time has a groove 105 extending to a position deviating from the outer circumferential surface of the grip portion 110 while communicating with the discharge passage 112 to connect the discharge passage 112 to the inner space of the main body 100 .

The operation lever part 120 is configured to insert a part of the lower side part into the internal space 111 of the grip part 110 through the upper opening of the grip part 110 to seal the internal space 111, ), And can rotate based on the vertical axis. An opening and closing groove 121 is formed on the outer circumferential surface of the lower side portion inserted into the inner space 111 so as to continuously communicate with the inner space 111 of the grip portion 110, ). ≪ / RTI >

The inner space 111 communicates with the outside when the opening / closing groove 121 is aligned with the position of the discharge passage 112. When the opening / closing groove 121 is shifted to the discharge passage 112, It is possible to open and close the discharge passage 112 by adjusting the rotation angle of the lever portion 120.

6, 8 and 9, the upper end of the capillary 10 accommodated in the inner space 111 is formed at a portion of the operation lever portion 120, which is inserted into the inner space 111 of the grip portion 110, A protruding protrusion 122 of a protruding shape is formed. When the capillary tube 10 is inserted into the main body 100, the capillary tube 10 is pushed downward by lowering the operating lever portion 120 while limiting the insertion depth of the capillary tube 10 In order to detach it. The lower end of the removing protrusion 122 is provided with an opening groove 123 extending from the center of the lower end to the outer circumferential surface so as not to block the upper end opening of the capillary tube 10 when the upper end of the capillary tube 10 comes into contact with the upper end of the capillary tube 10 .

The upper portion of the operating lever portion 120 has a projecting projection 124 projected outward through the lever hole 103 and guided by the lever hole 103 in its moving range.

Here, the lever hole 103 is formed in a predetermined length in the circumferential direction of the body 100, and is further cut to a predetermined length in a downward direction from one of the ends, The lever 120 is limited in the range of rotation and the range of descent by the lever hole 103. Of course, the rotation range is a position where the opening / closing groove 121 of the operation lever portion 120 is aligned with the discharge passage 112 of the grip portion 110 to mutually communicate with the opening / closing groove 121, And the falling range is set to a range that allows the capillary tube 10 to be pushed out by the detaching projection 122 and released to the gripper 110. In this case,

In the specific embodiment, the operation protrusion 124 is fitted in the lever hole 103 while being covered by the protrusion cover 125. The protrusion cover 125 is provided with an extension portion that always covers the lever hole 103 when the protrusion cover 125 is operated by a human hand and moves along the lever hole 103. Here, the extended portion is provided so as to be in close contact with the inner circumferential surface of the middle portion 110b of the main body 100 to stabilize the rotation and vertical movement of the operating lever portion 120 while preventing the inside from being seen from the outside, A hole 103 for use, an operation projection 124, and a projection cover 125 at two locations.

Of course, the outside of the gripper 110 becomes an internal space of the intermediate portion 100b of the main body 100, and a clearance is formed by the lever hole 103. Therefore, the internal space 111 of the gripper 110 Air can flow between the outside of the main body 100.

A signal processing unit 180 for executing an algorithm for calculating or acquiring a viscosity based on a sensed value sensed by the sensor unit 130 and an interface unit 150 and a power supply unit 170 .

7, a circuit board 181 having a narrow width from the inner space of the intermediate portion 100b to the inner space of the lower portion 100a and extending vertically upward and downward is provided, (Not shown) of the interface unit 150 as well as the guide unit 140, the illumination unit 170, the grip unit 110, the operation lever unit 120, the signal processing unit 180, and the power source unit 160 151 and the lamp 153 are mounted or mounted on the circuit board 181 in accordance with the arrangement position, thereby simplifying the assembling process of the present invention. In the case of the on-off button 152, it is mounted on the lower side (the lower side of the display unit) of the upper portion 100c to facilitate the operation.

The signal processing unit 180 outputs a screen for selecting and inputting the tilt angle of the main body 100 to the display unit 154 to select the tilt angle with the up and down buttons 151, And acquires the viscosity with a viscosity acquisition algorithm corresponding to the tilt angle selected by the up / down button 151 when acquiring the viscosity according to the sensed sensed value.

The fall time of the falling body 11 falling within the capillary tube 10 becomes shorter as the inclination angle of the capillary tube 10 with respect to the horizontal plane is larger and conversely the inclination angle of the capillary tube 10 with respect to the vertical line The smaller the drop time, the smaller the drop time.

Accordingly, as the expected viscosity for the fluid to be vis- iously measured is lower, a more accurate viscosity can be obtained by decreasing the inclination angle with respect to the horizontal plane and measuring the viscosity. This is because the fall time of the drop body becomes shorter as the viscosity becomes lower, and the detection error in the sensor portion can be relatively increased.

On the contrary, it is preferable to increase the tilt angle with respect to the horizontal plane as the expected viscosity increases, and to obtain the viscosity accurately by reducing the difference in fall time from the case of low viscosity.

Therefore, the above-described viscosity acquisition algorithm can be implemented by, for example, measuring the change in fall time according to the slope of the capillary as disclosed in Korean Patent Laid-open No. 10-2015-0069221, and correcting the viscosity calculation equation according to the slope.

On the other hand, for example, the equation for calculating the viscosity can be calculated using the equation described in Korean Patent No. 10-1458320.

The main body 100 having the above-described structure may be used independently of the following stand 200 to measure the viscosity, and the method of use may be as follows.

First, the operation lever portion 120 is pushed upward while blocking the discharge passage 112 of the grip portion 110.

Next, the capillary 10 is inserted into the insertion port 101 of the main body 100 so that the portion provided with the drop body 11 is inserted first, The capillary 10 is inserted until it abuts on the detaching projection 122 of the detaching projection 120. Since the lower end of the capillary tube 10 (the opposite side of the portion provided with the drop body) must be exposed to the outside of the insertion port 101 in the inserted state as described above, the length of the capillary tube 10 is suitably manufactured .

Next, the on / off button 152 is pressed to turn on the power. Then, a slope is selected and input. In the case where the stand 200 described below is not used, it is difficult to accurately adjust the inclination, so it is preferable to select the vertical direction.

Next, after the lower end of the capillary tube 10 is immersed in the viscosity measurement target solution, the operation lever portion 120 is rotated by moving the operation projection 124 with a finger to open the discharge passage 112. The internal air of the capillary tube 10 receives the upward pressure of the fluid to be visually measured by the capillary phenomenon and enters the opening 123 of the operating lever portion 120, the internal space 111 of the gripper portion 110, Since the fluid is discharged to the outside via the opening and closing groove 121 of the lever portion 120 and the discharge passage 112, the fluid is sucked into the capillary 11.

Since the inflow height of the fluid can be seen through the transmission window 102, when the fluid reaches the drop body 11, the operation lever portion 120 is rotated to close the discharge passage 112, Is shut off. Thus, the fluid suction in the capillary tube is stopped. Then, the main body 100 is vertically erected.

At this time, since the compound in which the dropping body 11 is fixed to the inner wall of the capillary tube 10 is dissolved in the fluid and the dropping body 11 drops, the signal processing unit 180 detects the falling body 11 ), And outputs the obtained viscosity to the displayer 154. The viscosity of the liquid is determined by the viscosity of the liquid.

After confirming the output viscosity, the user pushes the operation lever part 120 downward to release the capillary tube 10 from the grip part 110. [ Thus, the capillary tube 10 is detached from the main body 100.

Hereinafter, the stand 200 will be described with reference to the separated perspective view of FIG. 1 to FIG. 3 and FIG.

The stand 200 is placed in a stable state in which the body 100 is immovable, and the viscosity is measured, or the viscosity is measured while being adjusted at an appropriate slope. The stand 200 includes a shaft receiving portion 210 protruding upward with a gap therebetween so as to face each other, a shaft receiving portion 210 disposed between the both shaft receiving portions 210 and supported by the shaft receiving portion 210, A mounting part 220 for tilting the mounting part 221 and an angle adjusting part 230 (231 to 237) for adjusting the inclination of the mounting part 220.

The mounting portion 220 includes a main body insertion opening 223 having an upper opening and a lower opening to allow the main body 100 to be inserted into the main body insertion opening 223 from the top to the bottom. A lower portion 100a of the main body 100 is passed through and a middle portion 100b of the main body 100 is provided with a stepped portion (not shown) at the lower end side of the inner circumferential surface of the main body insertion port 223. That is, at least the viewing window 102 and the insertion opening 101 are exposed to the lower side of the mounting part 220 among the respective parts of the main body 100 so that they can be seen from the outside.

In addition, the mounting portion 220 includes an extension portion 222 extending downward to cover the rear side of the lower portion 100a of the main body 100 with a gap therebetween. Preferably, the lower end of the extension 222 has a small cup-shaped sink receiving groove 224 for condensing the fluid falling from the capillary tube 10. When the capillary 10 is inserted into the cap receiving groove 224 and the main body 100 in which the fluid to be measured is sucked into the capillary tube 10 is inserted into the receiving portion 220, In order to facilitate the subsequent washing of the fluid.

According to a specific embodiment, the mounting portion 220 is configured to fix one rotation axis 221 on both sides of the transverse direction orthogonal to the vertical direction in which the main body 100 is inserted. In addition, the rotation shafts 221 on both sides are rotatable in a state of passing through the shaft receiving portions 210, respectively.

On the outer surface of the shaft receiving portion 210, a separation preventing plate 211 penetrating the end portion of the rotating shaft 221 is mounted. The shaft separation preventing plate 211 is fixed to the shaft receiving portion 210 while allowing the rotation shaft 221 to rotate so as to prevent the rotation shaft 221 from being separated from the shaft receiving portion 211 and to recognize the rotation angle of the rotation shaft 221 from the outside . That is, since the rotation angle of the rotation shaft 221 is the rotation angle of the mounting part 220 or the inclination angle of the main body 100 that is fixed to the mounting part 220, the description of the capillary 10 inserted into the main body 100 The rotation angle of the rotation shaft 221 can be known.

The angle adjusting unit 230 includes a guide line 232 marked on the end of the rotational shaft 221 exposed to the outside and a guide bar 232 mounted on the arc of the surface of the off- A scale 231 engaging the inclination angle of the part 220 and pointing the lead line 232 according to the rotation of the rotation axis 221 and a scale 231 interposed between the axis receiving part 210 and the mounting part 220, A rotation disc 233 which is fixed to the rotation shaft 221 and has a plurality of holes 234 formed along an arc around the rotation shaft 221 as a center, a rotation disc 233 fixed to the shaft support 210, A projection 236 formed on the mounting portion 220 and a projection 236 formed on the shaft receiving portion 210 so that the projection 236 is engaged with the projection 236. [ And a stopping projection 237 for limiting the rotation range of the mounting part 220.

Here, the hole-inserting protrusion 235 may be resiliently contracted against pressing or resiliently pushed toward the inside of the shaft receiving portion 210, so that the mounting portion 220 can be rotated by hand In addition, as well as being held in the hole 234, when the hand is released, the mounting portion 220 is stopped so as not to rotate as long as it is not artificially rotated.

The compositional positions of the plurality of holes 234 formed in the rotary disk 233 and the marking positions of the scales engraved on the off-axis prevention plate 211 correspond to each other while the inclination angle of the mounting part 220 . The angle here can be set, for example, in the range of 20 to 90 degrees with the horizontal plane, and the holes 234 and the scale 231 can be adjusted to the positions of 20, 30, 45 and 90 And this adjustment angle coincides with the angle at which the main body 100 selects and inputs.

The use of the stand 200 is performed by tilting the mounting part 220 at an angle equal to the angle of inclination selected and input to the main body 100 and moving the dropping body 220 in the capillary tube 10 filled with at least the fluid to be visually measured 11 is the same as the main body 100 alone except that the main body 100 is mounted on the mounting portion 220 before the main body 100 is dropped.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And the like. Accordingly, such modifications are deemed to be within the scope of the present invention, and the scope of the present invention should be determined by the following claims.

10: capillary tube 11:
100:
100a: Lower part 100b: Middle part 100c: Upper part
101: insertion port 102: see-through window 103: hole for lever
104: projection 105: groove
110: grip portion 111: internal space 112: exhaust passage
113: projection part 114: insertion guide part
120: operation lever section 121: opening / closing groove 122: detachment projection
123: opening groove 124: actuating projection 125: projection cover
130:
140: guide portion
150: Interface unit 151: Up and down buttons 152: On-off button
153: Lamp 154: Display language
160:
170:
180: signal processor 181: circuit board
200: Stand
210: a shaft receiving portion 211: an off-axis preventing plate
220: mounting part 221: rotating shaft 222: extension part
223: main body insertion port 224:
230: Angle adjusting part 231: Scale 232: Leader
233: rotation disk 234: hole 235: hole insertion projection
236: projection 237: stop projection

Claims (8)

A capillary tube (10) in the form of a transparent hollow tube having a falling body (11) on its upper inner circumferential surface, capable of sucking a fluid to be visually measured by capillary phenomenon and capable of freely falling inside; And a main body 100 which can be inserted into and detached from the capillary 10 through an insertion port 101 at a lower end thereof,
The main body 100 includes:
And a tubular body which receives the upper end of the capillary tube 10 inserted through the insertion port 101 into the inner space 111 through a lower side hole so as to grip the upper portion of the inserted capillary tube 10, A grasping portion 110 provided on the outer circumferential surface of the capillary 10 for communicating the space 111 with the outside and communicating the inside of the capillary 10 with the discharge passage 112;
And a lower end of the grip portion 110 is inserted into the inner space 111 of the grip portion 110. An opening and closing groove 121 continuously connected to the inner space 111 of the grip portion 110 is provided on the outer peripheral surface of the inserted portion, An operating lever portion 120 for opening / closing the discharge passage 112 by aligning or displacing the opening / closing groove 121 with the discharge passage 112;
A sensor unit 130 disposed along the capillary 10 inserted therein for sensing a falling body 11 falling freely;
A signal processing unit 180 for obtaining a viscosity based on a sensing value of the sensor unit 130;
An interface unit 150 for outputting the obtained viscosity;
Wherein the portable viscosity measuring device comprises: delete The method according to claim 1,
Wherein the operating lever part (120) pushes the capillary (10) downward by being lowered so as to be detached from the grip part (110). The method of claim 3,
The operation lever unit 120 includes a manipulation protrusion 124 protruding outward through a lever hole 103 formed on an outer circumferential surface of the main body 100 so as to limit a range of rotation and a range of descent, . The method according to claim 1,
A mounting portion 220 for fitting the main body 100 with the insertion port 101 downward; And
An angle adjusting unit 230 for adjusting the inclination of the mounting unit 220;
And a stand (200) provided with a base (200). 6. The method of claim 5,
The angle adjuster 230 includes a scale 231 for adjusting the angle,
The interface unit 150 includes a button 151 for selecting an angle,
Wherein the signal processing unit (180) acquires a viscosity with a viscosity acquisition algorithm corresponding to an angle selected by the button (151). 6. The method of claim 5,
The main body 100 is formed with a long transparent window 102 along the capillary 10 inserted therein and an illumination unit 170 is arranged to guide the capillary 10 illuminated by the illumination unit 170 to the transparent window 102). ≪ / RTI > 8. The method of claim 7,
The mounting part 220 of the stand 200 is mounted on the main body 100 so as to be exposed to the outside from the viewing window 102 through the insertion port 101, Wherein the receiving groove (224) is provided below the insertion port (101).
KR1020160049808A 2016-04-25 2016-04-25 Portable viscosity measuring device KR101922145B1 (en)

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PCT/KR2016/004302 WO2017188462A1 (en) 2016-04-25 2016-04-25 Portable viscometer

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JP2007127471A (en) * 2005-11-02 2007-05-24 Univ Kansai Viscosity measuring device of blood

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KR100352710B1 (en) * 2000-03-30 2002-09-16 서상호 Transient flow capillary tube viscometer and method for measuring viscosity thereof
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JP2010133924A (en) * 2008-10-28 2010-06-17 Sysmex Corp Liquid aspirating mechanism and sample analyzer
KR20150069221A (en) * 2013-12-13 2015-06-23 한국전자통신연구원 Blood viscometer using time of falling

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