JPH0582543B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for continuously measuring the viscosity of various continuously flowing fluids.

(Prior art) As shown in Japanese Patent Application Laid-Open No. 62-62247, the present applicant has
A part of the fluid flowing through the main line flows into the viscosity measurement tank through the bypass inflow pipe, and the flow rises through the inner cylinder, which has open upper and lower surfaces, and overflows from the upper surface. We have invented a method for continuously measuring the viscosity of a fluid in which the viscosity of a continuously moving fluid is continuously measured by feeding the fluid, and the fluid after the measurement is returned to the main line.

(Problems to be Solved by the Invention) However, in the above-mentioned prior art, a part of the fluid flowing through the main line flows into the measurement tank in the bypass passage and overflows, making the entire device complicated and large. The problem was that it was expensive.

(Means for Solving the Problems) The present invention aims to solve the above problems, and includes a mixing tank disposed in the flow path of the fluid line, a line tank in the upper part of the mixing tank, and a discharge tank in the lower part. A pair of thin disc-shaped sensitive plates are installed at the bottom that resonate in opposite phases due to the electromagnetic vibrations of the electromagnetic drive unit installed at the top. A vibrating viscometer is attached to the top of the capsule so as to be movable up and down, placed and fixed on an annular float, and the float is floated on the upper surface of the liquid in the mixing tank, and the vibrating viscometer is moved up and down. The gist of this invention is an apparatus for continuously measuring the viscosity of a fluid in a line in which a sensitive plate is inserted to a predetermined depth into the liquid level in the central cavity of a float.

Hereinafter, a detailed explanation will be given based on the illustrated embodiment. Reference numeral 1 denotes a fluid line flow path, and 2 represents a mixing tank installed in the line flow path 1, with a line tank 3 at the top and a discharge pipe 4 at the bottom. 5 is an inflow control valve, and 6 is an exhaust valve. Reference numeral 7 denotes a stirrer disposed within the mixing tank 2 and driven by a motor 8. A is a known vibratory viscometer that was previously invented by the present applicant, in which a pair of thin disc-shaped sensitive plates 10 and 10' attached to the bottom are inserted into the sample, and the electromagnetic vibration of the electromagnetic drive unit 11 is detected. Viscosity is measured by causing resonance vibration in opposite phases at 30 Hz and comparing the detected amplitude value with a pre-stored calibration curve. B is a capsule that houses the vibratory viscometer A. The upper end of the column 13 and the hollow disk 14 fixed to the upper end thereof are fixed to the upper collar 16 of the capsule B with screws 15, and the support plate 17 is rotated around the hollow part. A rod screw 19 is movably mounted and screwed into the screw 18 in the center thereof.
Fix the top end of the vibratory viscometer A to the bottom end and hang it.
Fix the lower end of the column 13 to the upper surface of the float C, and tighten the screw 2.
0 holds the sensitive plates 10, 10' at a predetermined position within the center cavity 21 of the float C. 22 is a viscosity indicator, 23 is a recorder, and is controlled by the inflow control valve 5 of the line tank 3. 24 is a temperature sensor, 2
5 is a level needle, 26 is a weight for balancing the capsule B, and 28 is a scale on the outer surface of the float C.

Next, the effect will be explained. A float C on which the capsule B is placed and fixed is floated on the liquid level 27 in the mixing tank 2. At this time, the sensitive plates 10, 10' are inserted to a certain depth from the fluid upper surface 27. This depth is determined by rotating the screw 20 to move the vibratory viscometer A up and down, and can be adjusted from the outside using the scale 28 on the outer surface of the float C. The amount of liquid in the mixing tank 2 is increased or decreased by the inflow control valve 5 and the discharge valve 6, but the capsule B moves up and down following the up and down movement of the fluid top surface 27, and the sensitive plates 10 and 10' are always lower than the fluid top surface 27. The viscosity of the fluid can be continuously measured while inserted at a certain depth.

(Effects) According to the present invention, a blending tank is disposed in the flow path of a fluid line, a line tank is disposed above the blending tank, a discharge pipe is disposed below the blending tank, and an inflow control valve and a discharge valve are respectively provided. A vibratory viscometer, which has a pair of thin disc-shaped sensing plates at the bottom that resonate in opposite phases due to the electromagnetic vibrations of the electromagnetic drive unit located at the top, is attached to the top of the capsule so that it can move up and down. The float is placed and fixed on a float, the float is floated on the upper surface of the liquid in the mixing tank, and the vibrating viscometer is moved up and down to insert a pair of sensitive plates into the liquid level in the center cavity of the float to a predetermined depth. The viscosity of the fluid flowing into and out of the mixing tank can be directly and continuously measured without the need for a bypass.
A pair of sensitive plates can be adjusted in height depending on the type of liquid and inserted at an appropriate constant depth, making it possible to accurately measure the viscosity of various liquids, simplifying the overall configuration of the device and providing it at low cost. It has the characteristic that it can be done.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic diagram of an embodiment of the present invention, and FIG. 2 is a front sectional view of the vibratory viscometer shown in FIG. 1. A... Vibrating viscometer, B... Capsule, C...
Float, 1... Line channel, 2... Preparation tank, 10, 10'... Sensitive plate, 21... Float center cavity.

Claims (1)

[Claims] 1. A mixing tank is arranged in the flow path of the fluid line, a line tank is arranged above the mixing tank, a discharge pipe is arranged below the mixing tank, an inflow control valve and a discharge valve are provided respectively, and an electromagnetic actuator is arranged above the mixing tank. A vibratory viscometer, which has a pair of thin disc-shaped sensitive plates at the bottom that resonate in opposite phases due to electromagnetic vibrations of the capsule, is attached to the top of the capsule so that it can move up and down, and is placed and fixed on an annular float. Then, the float was floated on the upper surface of the liquid in the mixing tank, and the vibrating viscometer was moved up and down to insert the pair of sensitive plates into the liquid level in the center cavity of the float to a predetermined depth in the line. Continuous fluid viscosity measuring device.