JPH068614Y2 - Viscoelastic fluid identification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a viscoelastic fluid discrimination device for comparative experiments of viscoelastic fluid and general fluid, and in particular, using a simple device, The present invention relates to a device that distinguishes the two by utilizing the difference.

[Conventional technology]

It is known that conventional fluids include Newtonian fluids and non-Newtonian fluids. When a rod in Newtonian fluid (general fluid) is inserted and rotated, the fluid is pushed outward by centrifugal force. I have On the other hand, non-Newtonian fluids include pure viscous fluids, plastic fluids, viscoelastic fluids, etc. Phenomenon in which when the rod is inserted into the viscoelastic fluid and rotated, the fluid winds around the rod and rises (Wiesenberg phenomenon) Was known. However, although it is difficult to distinguish this phenomenon at a glance, there was no device for comparative experiments.

[Problems to be solved by the invention]

Therefore, in the present invention, the viscoelastic fluid and the general fluid are put in two sealable containers that are divided at the center, and the two fluids are agitated by turning the handle, whereby the characteristics of the two fluids are checked. It is an object of the present invention to provide a viscoelastic fluid identification device for comparative experiments in which the difference can be clearly seen.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention is supported by two separable containers which are partitioned by a partition wall and each of which can contain a liquid and through which the inside can be seen, and a bearing which is provided on an upper portion of the side wall of the container. A drive rotary shaft that is horizontally disposed through the two containers, a handle that is connected to the drive rotary shaft and is installed outside the container, and a handle that is housed below the interior of each of the containers. Provided is a viscoelastic fluid identification device provided with a stirring shaft for each of the containers having a rotation shaft in a direction substantially perpendicular to the drive rotation shaft connected to the drive rotation shaft via respective power transmission direction conversion means. .

[Action]

In the viscoelastic fluid discriminating apparatus of the present invention for comparison experiment of viscoelastic fluid and general fluid, a conical agitator in two sealable containers is rotated by a transmission mechanism by rotating a handle provided outside the container. As a result, the lower part of the conical stirrer rotates in each fluid to stir. As a result, the general fluid is simply pushed outward by the centrifugal force and the fluid is agitated.On the other hand, the viscoelastic fluid produces a synthetic force in the direction perpendicular to the tangential direction of the centrifugal force due to the elastic effect.
It rises while entwining with the conical stirrer, and finally forms a state of covering the entire outer circumference of the rotating stirrer. The standard general fluid and the fluid to be tested are housed in respective sealable containers, stirred, and visually compared to determine whether or not they are viscoelastic fluids.

〔Example〕

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a state in which the handle 3 is rotating. The sealable container 1 is divided by a dividing plate 2 at the central portion to form two closed chambers O and P. The closed chamber O contains the viscoelastic fluid A in which the lower portions of the pair of conical stirrers 10, 10 are immersed. The other closed chamber P contains the general fluid B in the same state. As the general fluid B, lubricating oil or gear oil which is a Newtonian fluid is used.

The handle 3 rotates the drive rotary shaft 4, and the rotary shaft 4 supported by the bearing 11 provided in the sealable container 1 is provided so as to pass through the upper portions of the two sealed chambers O and P. Support members 8, 8 are provided in the two closed chambers O, P, respectively, and support the vicinity of the mounting portions of the internal gears 5, 5 mounted on the rotary shaft 4, respectively. The lower portions of the supporting members 8 and 8 also support the rotary support shafts 9 and 9 of the conical stirrer 10 and 10 at the same time.

Internal teeth 6, 6 are formed on the internal gears 5, 5,
The bevel gears 7, 7 provided on the upper ends of the rotary support shafts 9, 9 mesh with each other. The conical stirrers 10 and 10 are formed by bending thin plate-like bodies to form a large downward portion and combining them in a cross shape.

A pair of conical stirrers 10, 10 formed as described above are provided in each closed chamber O, P so that the pair of stirrers in each closed chamber rotate in mutually opposite directions. Reference numeral 12 indicates a handle for carrying the rotation ratio experiment device of this embodiment.

[Effect of device]

Since the present invention has the above-mentioned structure, the viscoelastic fluid is raised upward by the rotation of the conical stirrer by turning the handle, and the viscoelastic fluid is caught by covering the stirrer, and one of the general fluids is simply stirred as it is. As a result, the characteristics of both fluids can be known at a glance.

In addition, the viscoelastic fluid identification device for comparative experiments of the present invention is lightweight and easy to carry, and since the internal fluid (oil or the like) does not leak from the sealable container, it is suitable as a learning tool.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a state diagram of the present embodiment in use, FIG. 2 is a front view, and FIG. 3 is a partially cutaway perspective view. 1 ... Sealable container, O, P ... Closed chambers, 2 ... Partition plate, 3 ... Handle, A ... Viscoelastic fluid, B ... General fluid, 4 ... Drive shaft, 5 ... … Internal gear, 7… Bevel gear, 8… Support, 10… Conical stirrer, 12… Handle,

Claims (3)

[Scope of utility model registration request] 1. Two sealable containers which are partitioned by a partition wall and each of which is capable of containing a liquid and through which the inside can be seen, and the two containers which are supported by bearings provided on the upper side wall of the container. A drive rotating shaft that penetrates the inside and is arranged in the horizontal direction, a handle that is connected to the drive rotating shaft and is installed outside the container, and a drive rotating shaft that is housed under the inside of each of the containers. Viscoelastic fluid identification device, comprising: the agitator for each of the containers having a rotation shaft that is substantially perpendicular to the drive rotation shaft that is connected through the power transmission direction conversion means. 2. The utility model registration claim wherein the agitator is a pair of agitating blades rotating in opposite directions to each other at the same speed about respective rotating shafts arranged substantially at right angles to the drive rotating shaft. The viscoelastic fluid identification device described in (1). 3. The viscoelastic fluid identification device according to claim 1, wherein the power transmission direction means is a bevel gear.