JPH0519930B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an apparatus for measuring wetting characteristics such as lyophilicity or lyophobicity of powder or granules.

Conventional technology Conventional technology Japanese Patent Application Laid-open No. 176835/1983 (Patent application No. 176835)
-18080) is shown in Figures 1 to 3, the main body member 1
consists of an upper member 3 and a lower member 2, and the lower member 2
is provided with a recess 4 having a uniform depth, and the granular material to be measured is filled into the recess 4 as a filler A with a constant porosity. The height of the filling layer A is 1 mm to 2 mm.
The depth may be the same as or slightly higher than the depth of the recess.

Then the upper part 3 is filled with the filling A of the lower part 2
It must be placed so that there is no gap between the flat plate part 5 and the flat plate part 5, which is useful for placing the liquid B without a gap, and which serves as a reservoir for the liquid B used for measurement and for supplying the liquid B to the packed bed A. In addition, in FIGS. 1 to 3, the detectors of the first and second wetness measuring instruments for measuring the wetness of the powder and granular material in the packed bed A are 7 ₁ , 7 . ₂ or 8 ₁ , 8 ₂ , and the detector 7 ₁ or 8 ₁ of the first wetness measuring device is in the flow direction of liquid B with respect to the detector 7 ₂ or 8 ₂ of the second wetness measuring device. Which of the detectors 7 ₁ , 7 ₂ , 8 ₁ ,
The tip of 8 ₂ is also installed so as to face the granular material of the packed bed A. The detectors 7 ₁ and 7 ₂ each consist of a pair of electrodes, and the detectors 8 ₁ and 8 ₂
is made of optical fiber, but the upper member 3 may be made transparent and made of two marks as a detector so that penetration of the liquid can be visually observed.

The selection of these detectors is made based on the properties associated with wetting, such as conductivity, dielectricity, and optical changes when liquid B is added to the filling layer A, and the arrangement of the detectors is also determined by the properties related to wetting, such as conductivity, dielectricity, and optical changes. The lower member 2 is not limited to the lower member 3, and the lower member 2 may be arranged separately into upper and lower parts.

The results from these detectors 7 ₁ , 7 ₂ and 8 ₁ , 8 ₂ are detected as the passing time and displayed on the counter 12 as, for example, 35 seconds in the case of the detector 7 ₁ , 7 . ₂ and the detectors 8 ₁ and 8 ₂ are selected by the switch 13 of the counter 12. Note that the counter 12 may calculate and display the contact angle or the negative capillary tension.

The packed bed A in FIG. 1 is lyophilic and does not need to be pressurized against the liquid B in the reservoir, but the packed bed A in FIG. 2 is lyophobic, so the tube 14 It is necessary to apply more pressure, such as atmospheric pressure. In other words, whether the filler A is lyophilic or lyophobic depends on whether pressure is applied or not, and there is no particular difference in wetness measurement.

Therefore, for the lyophobic property shown in Figure 2, a screw 9' is provided in the screw hole 10 and tightened to withstand pressure, but for the lyophilic property shown in Figure 1, a screw 9' is provided and tightened. Although a centering pin 9 can be used for the hole 10, the centering pin 9 and the screw 9' can also be used without using it at all. However, since liquid B flows from the center to the periphery in the air vent 11 in any case, the gas remaining in the powder and granules flows into liquid B.
This is necessary in order not to impair the leaching of

Problems to be Solved by the Invention In the conventional technology, in order to use the hollow rising part 6 of the upper member 3 for supplying the liquid B, it is necessary to If the upper member 3 is simply placed, there is a problem that the measurement accuracy is not sufficient, especially since a gap between the filling material A and the flat plate portion 5 of the upper member 3 tends to occur. Ta.

Therefore, the lower end of the hollow upright portion 6 is connected to the flat plate portion 5.
Although it was considered to make it protrude further downward, this involved the problem that it was difficult to handle when placing it on the filling material A.

The present invention provides a wetting characteristic measuring device in which no flow path such as a gap is formed in the flow direction of the liquid other than the void inside the powder body, and particularly the arrangement of the liquid reservoir therefor.

Means for Solving the Problems This invention arranges the liquid reservoir so that the liquid B can be supplied from the liquid reservoir not from the upper end of the packed bed A but from the side. configuration to solve the above problems.

Embodiments Hereinafter, the present invention will be described in detail based on the embodiments shown in FIGS. 4 to 10.

The same parts as those in the prior art shown in FIGS. 1 to 3 are given the same reference numerals. Further, there are various selection and arrangement of the detectors as in the conventional technology, and the counter 12 is also provided as necessary.

Therefore, the main body member 1 is connected to the detector 7 ₁ , 7 ₂ or 8 ₁ ,
When 8 ₂ is provided only in the lower member 2, the upper member 3 does not have a hollow raised portion 6 for supplying the liquid B, so there is no need to provide the upper member 3 except for a lyophobic one. Therefore, in this invention, the main body member 1
is used synonymously with only the lower member 2.

4 to 10, the upper member 3
Optical eyeball detectors 8 ₁ , 8 ₂ , 8 ₁ ′,
8 ₂ ′ (8 ₁ ′ and 8 ₂ ′ will be described later) are simply illustrated.

The one shown in FIG. 4.5 has a circular recess 4 in the center of the lower member 2 and an annular liquid reservoir 15 on the outside thereof, and the liquid B in the liquid reservoir 15 is transferred to the recess 4 through a passage 16.
The filling A inside is fed laterally from the outside. In this case, as shown in the figure, the upper member 3 and the filling A
Even if there is a gap between the two, because the liquid B is supplied from the side of the packing A and is lyophilic, it will preferentially flow through the empty passages in the packing A.
The upper member 3 has an air vent 11 in the center and two sets of detectors 8 ₁ , 8 ₂ and detectors 8 ₁ ′, 8 ₂ ′. When two sets of detectors are used, greater accuracy can be achieved by taking the average of both.

In addition, the liquid reservoir 15 is divided into two parts so as to contain not only liquid B but also a reference liquid S such as alcohol, and two sets of detectors 8 ₁ , 8 ₂ and 8 ₁ ′, 8 _{2 ′ are inserted into each liquid B and 8 2} ′. If it is placed in a manner that corresponds to the liquid S, there is an advantage that the wetting characteristics can be easily calculated in comparison with the reference liquid S.

4 and 5, eight screw holes 10 are provided on the outer periphery of the liquid reservoir 15, but the upper member 3 is screwed into the screw holes 10 so as to cover the liquid reservoir 15, and the liquid reservoir 15 is heated. The lyophobic wetting properties can be measured by contacting a pressure device. In this case as well, a central air vent 11 is necessary.

Note that, when used for measuring lyophilicity, if the detector is provided only on the lower member 2, the upper member 3 is unnecessary, and the lower member 2 immediately becomes the main body member 1, of course.

However, the liquid reservoir 15
It may be formed as one piece, or it may be attached as a separate piece.

In the case shown in FIGS. 4 and 5, the recess 4 is circular, and the liquid reservoir 15 on the outside thereof is annular, but the shape of the recess 4 is not limited to a circle.
It may be a rectangular shape such as a triangle, quadrangle, or hexagon, and in that case, the liquid reservoir 15 on the outside does not necessarily need to match the shape of the recess 4, nor does it need to be annular. In short, it is sufficient if the two sets of detectors are wetted under the same structural conditions when the liquid B is directed toward the center of the shape of the recess 4. Note that the liquid reservoir 1 is formed in the shape of the recess 4.
Manufacturing is easy when the shapes of 5 are matched.

The ones in Figs. 6 to 10 are the liquid reservoir 15 (Fig. 6),
26 (FIG. 8) is provided in the center of the circular recess 4 of the lower member 2. Since it is normal for these products to not pressurize the liquid reservoir,
The detector is provided on the lower member 2 and the upper member 3 is omitted. That is, the main body member 1 often consists of only the lower member 2.

The vertically movable cylindrical member 25 for forming the liquid reservoir 15 shown in FIGS. 6 and 7 has a vertical passage 17 with an open upper end and an annular member located below the upper end by a position suitable for forming the liquid reservoir 15. It includes a conduction path 19 and a communication path 18 that connects the annular conduction path 19 and the rigid path 17.

In order to form the liquid reservoir 15 shown in FIG. 6, first move the cylindrical member 25 upward to protrude from the recess 4 as shown in FIG. The cylindrical member 25 is moved down to a predetermined position near the bottom surface.

At that time, the annular conduction path 19 is in communication with the liquid supply path 20 present in the main body member 1 and the lower member 2. Since the liquid supply passage 20 also communicates with a recess 21 provided in the main body member 1, the height of the upper end of the recess 21 should be set to be approximately the same as the upper end of the filling material A and slightly lower. For example, if liquid B is poured into the recess 21 up to the liquid level V in the state shown in FIG.
It will be supplied up to. Since the liquid level V of liquid B in the liquid reservoir 15 does not exceed the upper end of the filling material A, the liquid level V in the liquid reservoir 15
The liquid B is supplied only from the lateral direction of the packing A.

In this case, there is no such thing as a supply port such as a passage in general, but in the sense that the filling material A is supplied from the lateral direction of the entire circumferential surface in contact with the liquid reservoir 15 in this invention, this is also a kind of supply port. It is used with the understanding that

The vertical movement of the cylindrical member 25 is performed by screwing the male screw 23 and the female screw 24 together, but the vertical movement may also be performed using hydraulic pressure or other means.

In the same spirit as the embodiments shown in FIGS. 4 and 5, the embodiments shown in FIGS. 25 may be a simple columnar member. In that case, if the columnar member is cylindrical, the vertical movement of the columnar member is determined by the male thread 23 and the female thread 24.
The conductive path 19 needs to be annular, and if the columnar member is, for example, prismatic, a hydraulic pressure device is used, and the conductive path 19 needs to be annular.
9 does not need to be circular.

8 to 10 also use a cylindrical member 25' that moves up and down to form the liquid reservoir 26,
In this device, an enlarged portion 26 having a depth corresponding to the height of the filled layer A is formed above the vertical passage 17 in FIGS. 6 and 7, and this enlarged portion 26 serves as a liquid reservoir 26. This enlarged part 26 has a lateral opening 27 on the side, and this opening 27 serves as a supply port as a liquid reservoir 26, and is used to prevent the filling A from collapsing easily compared to the one shown in FIGS. 6 and 7. Can be used. The downward movement shown in FIGS. 8 to 10 can be achieved by lowering the enlarged portion 26 to the position where the liquid reservoir 26 is formed. Other than that, it is the same as the one in FIGS. 6 and 7.

Note that 28 in the figure is a column that supports the main body part 1, and is used to form a space necessary for vertical movement of the cylindrical members 25, 25'; however, when using hydraulic pressure etc. for vertical movement, It's not necessarily necessary.

Further, 22 in the figure is a watertight part such as an O-ring.

Effects of the Invention In this invention, since a supply port is provided for supplying liquid from the liquid reservoir from the lateral direction to the powder/granular material packed bed A, it is possible to ensure that the measurement liquid B and the reference liquid S are supplied to the packed bed A.
can be prioritized and wetted.

[Brief explanation of the drawing]

Figures 1 and 2 are partial cross-sectional schematic diagrams of a wettability measuring device showing conventional technology, and Figure 3 is A of Figures 1 and 2.
-A and B-B arrow views; FIG. 4 is a sectional view showing one embodiment of the present invention; FIG. 5 is a plan view thereof; FIG. 6 is a sectional view showing another embodiment of the present invention; Figure 7 is the 6th
A sectional view of the main part when operating the cylindrical member shown in the figure, No. 8
The figure is a sectional view showing still another embodiment of the present invention, FIG. 9 is a sectional view of a main part when the cylindrical member of FIG. 8 is operated, and FIG. 10 is an enlarged sectional view of a part of the cylindrical member. be. In the figure, 1...main body member, 4...recess, 7 ₁ , 8
₁ , 8 ₁ ′...Detector of the first wetness measuring device, 7 ₂ , 8
_{2,8 2} '...Detector of the wetness measuring device of 2, 15,2
6...Liquid reservoir, A...Powder filling.

Claims (1)

[Scope of Claims] 1. A main body member having a concave portion of uniform depth forming a packed layer of powder and granule, and a liquid reservoir for supplying liquid to the powder and granule;
Measurement of leakage characteristics of powder and granular material, comprising detectors of first and second wetness measuring instruments that are arranged facing the powder and granular material packed bed and separated in the flow direction of the liquid and measure the wetting of the powder and granular material. An apparatus for measuring wetting characteristics of powder or granular material, characterized in that the liquid reservoir is provided with a supply port for supplying liquid from the lateral direction of the packed bed of powder or granular material. 2. The device for measuring wettability characteristics of powder or granular material according to claim 1, wherein the liquid reservoir is provided integrally with the main body member. 3. The device for measuring wetting characteristics of powder or granular material according to claim 1 or 2, wherein the liquid reservoir is provided outside the recess of the main body member. 4. The apparatus for measuring wettability characteristics of powder or granular material according to claim 2, wherein the liquid reservoir is provided at the center of a recessed portion of the main body member. 5. A main body member having a concave portion of uniform depth forming a granular material packed layer, and a liquid reservoir for supplying liquid to the granular material;
Detectors of first and second wetness measuring devices that are arranged to face the powder/granular material packed layer and are separated in the flow direction of the liquid and measure the wetness of the powder/granular material, and the powder/granular material packed layer is provided in the liquid reservoir. In the apparatus for measuring wettability properties of powder and granular material, the liquid reservoir is provided in the center of the recess of the main body member, and the liquid reservoir is provided in the center of the recess of the main body member, and is A device for measuring wettability properties of powder or granular material, characterized in that a liquid reservoir is formed. 6. The columnar member includes a vertical passage whose upper end is open, a conductive passage provided at a position below the upper end at a position suitable for forming a liquid reservoir, and a communication passage that connects this conductive passage and the vertical passage. 6. The apparatus for measuring wettability properties of powder or granular material according to claim 5, wherein the main body member includes a liquid supply passage communicating with the conduction passage. 7 Above the rigid passageway with the upper end of the cylindrical member open,
The granular material according to claim 6, characterized in that the enlarged part has a depth corresponding to the thickness of the granular material packed layer, and a number of lateral openings are provided on the side surface of this enlarged part. Wetting property measuring device. 8. Claim 6 or 8, characterized in that the main body member includes a recess that communicates with the liquid supply passage and has an upper end that is approximately the same height as the upper end of the powder-filled layer. The device for measuring wettability properties of powder or granular material as described in item 7.