JP5155465B1 - Spiral flow meter - Google Patents

Abstract

[PROBLEMS] To realize a measuring container capable of measuring a liquid amount with high accuracy by a simple method without requiring a rod to stand on a liquid surface.
A volume part 13 that holds a liquid therein and has a line extending obliquely and upwardly with respect to the bottom surface, and a liquid level of the liquid that is disposed above or below the volume part 13 is specified. And a reference scale unit 11 that is disposed above or below the volume unit 13 and measures the position of the instruction unit 12 to constitute a measuring container, and for measuring the liquid amount, the instruction unit 12 and the line By using the intersection point, the moving distance of the instruction unit 12 is lengthened, and the change in the liquid amount is accurately measured.
[Selection] Figure 1

Description

  The present invention relates to a weighing container.

  Conventionally, there has been a graduated cylinder as a container for measuring the amount of liquid. However, it was difficult to read the scale. As another example, there is a measuring container in which a bar with a fine scale is placed in a graduated cylinder and the scale shaken by the bar is read (Patent Document 1).

JP 2000-292242 A

  Here, in the conventional measuring container, it is necessary to put a stick in the measuring cylinder separately and to stand vertically to the liquid surface, but it is difficult to stand vertically. Reading the scale was also difficult through the graduated cylinder.

  In order to solve the above-mentioned problems, a liquid part is held inside, and has a volume part that has a line that extends obliquely and upward with respect to the bottom surface, and is disposed above or below the volume part. A measuring container is used that includes an indicating unit that specifies a surface and a reference scale unit that is disposed above or below the volume unit and measures the position of the indicating unit.

  In the measuring container of the present invention, it is not necessary to stand the rod perpendicular to the liquid surface, and the amount of liquid can be measured with high accuracy by a simple method.

(A) Perspective view of the measuring container of the present invention, (b) Perspective view of the reference scale part of the measuring container of the present invention, (c) Perspective view of the indicating part of the measuring container of the present invention, (d) Weighing of the present invention Perspective view of volume part of container The perspective view of the volume part of the measurement container of this invention The perspective view of the instruction | indication part of the measurement container of this invention The perspective view of the reference | standard scale part of the measurement container of this invention Flow chart of measuring method using measuring container of the present invention (A)-(f) The figure which shows the state in each process of the flow of the measuring method by the measuring container of this invention. (A) The figure which shows the relationship which calculates liquid height from movement distance in the measuring method by the measuring container of this invention, (b) Movement distance (DELTA) x of the instruction | indication part 12 in the measuring container of this invention, and the change of the height of a liquid The figure which shows the relationship with quantity Δh Sectional drawing of the measurement container in Embodiment 2 (A) Perspective view of weighing container in embodiment 3, (b) Perspective view of reference scale part in embodiment 3, (c) Perspective view of instruction part in embodiment 3.

(Embodiment 1)
FIG. 1A shows a perspective view of the measuring container of the present invention. It consists of a reference scale part 11, an instruction part 12, and a volume part 13. The reference scale part 11 is a part for setting a measurement reference and a part having a scale. The instruction unit 12 is a part that specifies the position of the liquid surface. The volume part 13 is a part that holds the liquid. The volume part 13 is assembled by placing the instruction part 12 and the reference scale part 11 thereon.

  FIG. 1B is a perspective view of the reference scale portion 11, FIG. 1C is an indication portion 12, and FIG. 1D is a perspective view of the volume portion 13. The instruction unit 12 is moved in accordance with the increase or decrease of the liquid in the volume unit 13, and the movement distance is read by the reference scale unit 11 to measure the amount of liquid. Details will be described below.

FIG. 2 is a perspective view of the volume portion 13. The volume portion 13 has a circular cross section in a direction parallel to the bottom surface. It is a cylindrical container as a whole. The mouth 21, the combination part 22, the main body part 23, the line 24, the holding part 25, and the internal volume 26 are formed.

The main body portion 23 is a cylindrical container that holds a liquid therein and is transparent or translucent so that the liquid level of the liquid inside can be seen from the outside. The portion that holds the liquid inside is cylindrical. The volume portion 13 is made of a transparent material such as acrylic or glass material, and needs to be able to observe the internal liquid from the outside.

The line 24 is a line represented on the outer periphery of the main body portion 23. This is a line extending obliquely upward with respect to the bottom surface of the volume portion 13. The outer periphery of the main body 23 is wound like a spiral. This line 24 is used to specify the position of the liquid surface of the liquid.

The combination part 22 is located in the upper part of the main body part 23 and has a cylindrical shape with a smaller radius than the main body part 23. In this portion, the instruction unit 12 and the reference scale unit 11 are held.

The mouth 21 is located at the upper part of the combination part 22 and is a part for taking liquid into and out of the main body part 23.

The holding unit 25 has the instruction unit 12 on this portion and the reference scale unit 11 thereon. This is a portion that is recessed due to a difference in radius between the main body portion 23 and the combination portion 22.

The internal volume 26 is a cylindrical space that holds the liquid inside the volume portion 13.

FIG. 3 is a perspective view of the instruction unit 12. The instruction unit 12 includes an instruction unit main body 31, a second scale 32, a needle or rod-shaped body 33, and a cavity 34.

The instruction unit main body 31 is a ring-shaped or donut-shaped waka.

The needle or bar 33 is provided on the outer peripheral surface of the indicating unit main body 31 and protrudes downward from the upper end of the indicating unit main body 31 through the lower end. Spring metal wire is good. The needle or bar 33 extends in a direction perpendicular to the bottom surface of the volume portion 13 when assembled to the measuring container 100.

The second scale 32 is a scale provided at the upper end of the outer periphery of the indicating unit main body 31. This is a vernier corresponding to the first scale 42. It is not necessary to provide the entire circumference of the indicating unit main body 31, and it is provided only before and after the needle or bar 33.

The cavity 34 is a central through hole of the indicating unit main body 31, and the combination part 22 of the volume part 13 enters the cavity 34. Regarding the relationship between the combination part 22 and the cavity 34, the indicator part body 31 can smoothly rotate with respect to the volume part 13, but there is no need for play.

In FIG. 4, the perspective view of the reference | standard scale part 11 is shown. The reference scale part 11 includes a reference scale part main body 41, a first scale 42, a screw 43, and a cavity 44.

The reference scale part main body 41 is a ring-shaped or donut-shaped waka.

The first scale 42 is a scale for measuring the position of the needle or rod-shaped body 33. It is provided all around the reference scale part main body 41. A scale in the reverse direction is provided so that it can be read regardless of whether the instruction unit 12 moves left or right.

The screw 43 is a screw that is provided on the outer peripheral side surface of the reference scale part main body 41 and fixes the reference scale part 11 to the volume part 13. If it can be fixed, it does not have to be a screw. When the screw 43 is tightened, the head of the screw 43 comes into contact with the combination part 22 of the volume part 13, and the reference scale part 11 is fixed to the volume part 13. Two screws 43 are provided opposite to each other. The reference graduation part main body 41 can be clamped and fixed evenly.

The cavity 44 is an opening provided in the reference scale part main body 41 and is a part into which the combination part 22 is inserted. As for the relationship between the combination part 22 and the cavity 44, the reference scale part main body 41 can rotate smoothly with respect to the volume part 13, but there is no need for play.

The measurement method will be described with reference to FIGS. FIG. 5 is a measurement flow diagram, and FIG. 6 is a diagram illustrating a measurement state in each step of the measurement flow.

In step a of FIG. 5, the weighing container 100 is prepared. The reference scale part 11 and the instruction part 12 are fitted into the volume part 13 and assembled (FIG. 1A).

In step b of FIG. 5, the liquid is put into the main body portion 23 of the volume portion 13 (FIG. 6A). The indicating unit 12 is rotated on the holding unit 25 in a direction parallel to the bottom surface of the volume unit 13, and the needle or rod-like body 33 is aligned with the intersection of the liquid level of the liquid and the line 24 of the main body unit 23 (FIG. 6 ( b)). This state is maintained, the reference scale part 11 is rotated around the combination part 22 in a direction parallel to the bottom surface of the volume part 13, and the point of the scale 0 of the first scale 42 is set as the position of the needle or rod 33. (Fig. 6 (c)). Thereafter, the reference scale portion main body 41 is fixed to the combination portion 22 evenly with the two screws 43. With this fixing, if the reference scale unit main body 41 pushes the instruction unit main body 31 to the holding unit 25 and the movement of the instruction unit 12 in the vertical direction can be restricted, an error due to the movement of the instruction unit 12 in the next step is eliminated. Can be less and better.

FIG. 6A is a perspective view showing a state in which the liquid 61 is put in the measuring container 100.

FIG. 6B is a diagram showing a side surface of the volume portion 13, and shows a state in which the needle or rod-shaped body 33 is aligned with the intersection of the liquid surface of the liquid 61 and the line 24.

FIG. 6C is a diagram illustrating a state in the vicinity of the needle or bar 33 and the first scale 42 in the state of FIG.

In step c of FIG. 5, the liquid is added or removed (FIG. 6D).

In step d of FIG. 5, the indication unit 12 is again rotated on the holding unit 25 in a direction parallel to the bottom surface of the volume unit 13, and the needle or bar 33 is moved to the liquid level and the line 24 of the main body unit 23. (Similar to step b in FIG. 5).
And the position of the needle | hook or the rod-shaped body 33 is read with the 1st scale 42 (FIG.6 (e)).

FIG. 6D is a perspective view showing a state after the liquid 61 has changed in the measuring container 100.

FIG. 6E is a diagram showing a state in the vicinity of the needle or rod 33 and the first scale 42 when the needle or rod 33 is aligned with the intersection of the line 24 and the liquid 61 in the state of FIG. 6D. is there. In FIG. 6 (e), it is assumed that the second scale 32 is scaled at a position where the 9 scales of the first scale 42 are divided into 10 parts. The needle or bar 33 is located between 2.4 and 2.5 on the first scale 42, and the second scale 32 and the first scale 42 coincide with each other in the second scale 32. This is the sixth scale from the needle or bar 33. Therefore, it can be measured as 2.46. This principle is the same as that for calipers, and when reading the minimum digit, the portion where the scales of the first scale 42 and the second scale 32 coincide is read. There is little volatility, it is easy to read without depending on people. It is possible to measure with higher accuracy by swinging the scale of the first scale 42 and the second scale 32.

In step d of FIG. 5, the amount of change of the liquid is calculated from the relationship shown in FIG. 7A based on the movement distance (2.46) of the needle and the rod-shaped body 33 read in step c of FIG.

FIG. 7A is a diagram showing the relationship between the movement distance Δx of the needle or rod-like body 33 and the change amount Δh of the liquid height.

FIG. 7B is a diagram showing the relationship between the moving distance Δx of the needle or rod 33 and the change amount Δh of the liquid height in the measuring container 100. The movement distance Δx of the needle or rod-shaped body 33 is a distance on the outer circumference of the reference scale portion main body 41 to which the needle or rod-shaped body 33 has moved with respect to the volume portion 13. The change amount Δh of the liquid height is the change amount of the liquid surface. When the internal volume 26 is columnar, the movement distance Δx and the amount of change Δh in the liquid height are in a proportional relationship. This relationship can be obtained by actual measurement or by calculation. However, at the time of calculation, it is necessary to consider the difference between the radius (inner diameter) of the inner volume 26 and the outer periphery radius (outer diameter) of the main body 23. That is, the moving distance Δx is the outer radius, but the amount of liquid needs to be calculated and corrected by the inner diameter. As shown in the following example, the increase / decrease amount of the liquid can be displayed on the first scale 42. What is necessary is just to divide the scale to the 1st scale 42 by making the movement distance (DELTA) x of the needle | hook or the rod-shaped body 33 in the said method when a liquid increases 10 [mL] into an interval.

In the above example, the liquid 61 is increased, but the same can be measured when the liquid 61 is decreased. Further, in step c of FIG. 5, instead of adding a liquid to the volume portion 13, an object is put in the volume portion 13 and the same measurement as in the above example is performed to obtain the volume of the object placed in the volume portion 13. be able to.

In the above example, the amount of change in the increase / decrease of the liquid is measured. However, when there is no liquid in the initial state and the absolute amount of the liquid is measured, the needle or the rod-shaped body 33 is moved to the container bottom 62 at step b in FIG. What is necessary is just to match | combine with the starting position of the line 24 (FIG.6 (f)). In this case, the value of the capacity from the bottom surface of the volume part 13 may be written on the first scale 42 in advance.

FIG. 6F is a diagram illustrating a side surface of the volume portion 13. There is no liquid and the needle or rod 33 is aligned with the intersection of the line 24 and the top surface of the container bottom 62. The container bottom portion 62 is a portion where liquid cannot enter at the bottom of the internal volume 26.

From the above description of the measurement method, the needle or rod-like body 33 is in close contact with the indication portion 12 or the volume portion 13 in close contact or non-contact with the needle or rod-like body 33 in order to match the liquid level. Is preferred.

Moreover, since the position of the needle | hook or the rod-shaped body 33 is read with the scale of the side surface of the reference | standard scale part main body 41, it is good for the side surface of the reference | standard scale part 11 and the instruction | indication part 12 to be the same surface. As a result, the outer peripheral side surfaces of the reference scale part 11, the instruction part 12, and the volume part 13 are preferably the same surface.

In the present invention, since the position of the liquid level is not directly read, the intersection of the liquid level of the liquid and the line 24 is specified by the needle or bar 33, and the position of the needle or bar 33 is read by the first scale 42. Easy to read.

Since the measurement is performed in two stages, that is, the first scale 42 and the second scale 32 which is a vernier, the measurement can be easily performed with high accuracy. Further, when reading the minimum digit, the point where the scales of the first scale 42 and the second scale 32 coincide with each other is read, so that accurate measurement can be easily performed.

Conventionally, the height of the liquid in the vertical direction has been measured. In the present invention, since the diagonal line 24 is used, the measurement distance becomes long and the sensitivity becomes high, so that the measurement accuracy is improved.

Even if the needle or rod-like body 33 is inclined with respect to the vertical direction with respect to the bottom surface of the volume portion 13 and is fixed at a certain angle, the indication unit 12 can specify the liquid level serving as a reference for the liquid. When the indicator 12 specifies the liquid level of the changed liquid, it shifts by the same angle and does not affect the accuracy.

When the indicator 12 is rotated to identify the liquid level after the change of the liquid (FIG. 6B), since the reference scale 11 is fixed, the play of the indicator 12 is restricted and the accuracy is improved. Good.

The present invention has the following modifications in addition to the above examples.

(Embodiment 2)
In FIG. 8, the example of the cross section of the measurement container 100 is shown. A bottom raising portion 81 is provided at the lower portion. This prevents the needle or bar 33 from touching the lower surface and aligns the needle or bar 33 with the intersection of the container bottom 62 and the line 24 when the liquid 61 is not present in the initial state. The purpose is that. The thickness of the bottom raised portion 81 is set to be at least thicker than the thickness of the side surface of the main body portion 23. Other conditions and structures are the same as those in the first embodiment.

(Embodiment 3)
The same measurement as above can be performed when the volume portion 13 is not a cylinder but a polygonal column. That is, the volume portion 13 may have a polygonal cross section in a direction parallel to the bottom surface. This case is shown in FIGS. 9A to 9C.

In FIG. 9A, the volume portion 13 is a quadrangular prism, and the reference scale portion 11 and the indication portion 12 are in a flexible tape shape or a sheet shape, and are deformed to match the shape of the volume portion 13. Other conditions are the same as above. In this case, since the volume portion 13 is not cylindrical, the reference scale portion 11 and the instruction portion 12 cannot rotate in the state of the first embodiment. For this reason, the tape-shaped one shown in FIGS. 9B and 9C is used. The tape-shaped reference scale portion 11 and the indicator portion 12 are fitted into the corresponding portion of the measuring container 100, rotated with respect to the volume portion 13, and measured in the same manner as described above. It is even better if there is a structure that allows the tape to move easily, a tape fixing method, a mechanism that can adjust the length of the tape, and the like. Other conditions and structures are the same as those in the first and second embodiments. In the first embodiment, the tape-shaped reference scale portion 11 and the instruction portion 12 may be used.

(Supplementary information regarding the embodiment)
If the fit between the reference scale part 11 and the volume part 13 is not loose, the number of screws 43 may be one.

The volume part 13 is more transparent and thinner, so that the needle or rod 33, the line 24, and the liquid level of the liquid are easier to match. The material of the volume part 13 is a material capable of observing the internal liquid from the outside, for example, glass or plastic.

Although the line 24 may be directly described in the volume part 13, the line 24 may be created on a transparent tape and pasted on the volume part 13.

The positional relationship between the reference scale portion 11 and the instruction portion 12 may be independent and located above or below the volume portion 13. The vertical relationship between the reference scale unit 11 and the instruction unit 12 is not limited. In this case, the following structure is taken as an example so that the screw 43 and the needle or rod 33 do not interfere with each other. A concave portion may be provided so that the screw 43 is not on the outer periphery of the reference scale portion 11 and may be retracted into the concave portion, or the needle or rod-shaped body 33 is formed with irregularities, and the screw 43 portion is escaped by the convex portion to cause interference. You may make it not.

When the rotation axis of the reference scale part 11, the rotation axis of the instruction part 12, and the central axis of the volume part 13 are on one straight line, the reference scale part 11 and the instruction part 12 rotate with respect to the volume part 13. Easy to make.

In the measurement when there is no initial liquid as described above, if the absolute liquid amount is applied to the first scale 42, the change amount of the liquid from 0, that is, the absolute amount of the liquid can be measured without calculation. However, when the needle or bar 33 has one or more rounds, it is necessary to provide a plurality of first scales 42 and to change the stage for reading the scales every circumference.

The second scale 32 can be measured only with the first scale 42, which is not essential.

The needle or bar 33 can be measured with high accuracy even if it is slightly lifted from the outer peripheral surfaces of the reference scale part 11, the indicating part 12 and the volume part 13.

  The measuring container of the present invention can be applied not only to an experimental measuring instrument, but also to a wide range of devices that simply measure the volume of liquid.

11 Reference scale section 12 Instruction section 13 Volume section 21 Port 22 Combination section 23 Body section 24 Line 25 Holding section 26 Inner volume 31 Indicator section body 32 Second scale 33 Needle or rod-shaped body 34 Cavity 41 Reference scale section body 42 First scale 43 Screw 44 Cavity 61 Liquid 62 Container bottom part 81 Bottom raising part 100 Measuring container

Claims (9)

A volume part that holds a liquid therein and has a line extending obliquely with respect to the bottom surface and extending upward, and an intersection of the liquid level of the liquid and the line disposed above or below the volume part An indicating unit to be identified; and a reference scale unit that is arranged above or below the indicating unit and measures the position of the indicating unit, wherein the indicating unit is independent of the volume unit and the reference scale unit And has a needle or a rod-like body that extends in a direction perpendicular to the bottom surface of the volume portion and identifies an intersection of the liquid level and the line on the outer periphery, and the reference scale portion has the volume And a first scale for reading the position of the needle or rod-like body on the outer periphery thereof, and the indicator has a vernier of the first scale on the outer periphery thereof. A weighing container having a second scale. A volume part that holds a liquid therein and has a line extending obliquely with respect to the bottom surface and extending upward, and an intersection of the liquid level of the liquid and the line disposed above or below the volume part An indicating unit to be identified; and a reference scale unit that is arranged above or below the indicating unit and measures the position of the indicating unit, wherein the indicating unit is independent of the volume unit and the reference scale unit And has a needle or a rod-like body that extends in a direction perpendicular to the bottom surface of the volume portion and identifies an intersection of the liquid level and the line on the outer periphery, and the reference scale portion has the volume The reference scale unit is provided with a first scale for reading the position of the needle or the rod-like body on the outer periphery thereof, and the reference scale unit. There is a fixing part that can be opened and temporarily fixed to the volume part, The serial instruction unit, weighing container there is a second scale is a vernier the first scale on its outer periphery. The measuring container according to claim 2, wherein the fixing part is a screw. A volume part that holds a liquid therein and has a line extending obliquely with respect to the bottom surface and extending upward, and an intersection of the liquid level of the liquid and the line disposed above or below the volume part An indicating unit to be identified; and a reference scale unit that is arranged above or below the indicating unit and measures the position of the indicating unit, wherein the indicating unit is independent of the volume unit and the reference scale unit And has a needle or a rod-like body that extends in a direction perpendicular to the bottom surface of the volume portion and identifies an intersection of the liquid level and the line on the outer periphery, and the reference scale portion has the volume A first scale for reading the position of the needle or rod-like body on the outer periphery thereof, and the pointing section and the reference scale section are in the form of a sheet or tape Is a weighing container. The measuring container according to any one of claims 1 to 4, wherein the reference scale portion has a first scale for reading a position of the needle or the rod-like body. The measuring container according to claim 5, wherein the indication unit has a second scale that is a sub-scale of the first scale. The measuring container according to any one of claims 1 to 6, wherein the indication unit and the reference scale unit are located above or below the volume unit. The indicating portion and the reference scale portion have a donut shape, the volume portion has a cylindrical shape and has a cylindrical portion whose radius is smaller than other portions, and the indication portion and the reference scale portion are provided in the cylindrical portion. The measuring container according to any one of claims 1 to 3 or 5 to 7 , wherein is located. The measuring container according to any one of claims 1 to 7 , wherein the volume portion has a polygonal cross section in a direction parallel to a bottom surface thereof.

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