JPH067366Y2 - Viscosity adjusting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial field of application The present invention is an apparatus for adjusting the viscosity of a viscous fluid such as paint, chemicals, pulp, food and drink, ink, chemicals, resin, concrete and the like. It is about.

2. Description of the Related Art Conventionally, when adjusting the viscosity of a viscous fluid, a rotary type viscosity measuring device has been used.

The rotary viscosity measuring device, the cylindrical body is immersed in the fluid to be measured in a state of being suspended by a spring, and the fluid to be measured is rotated around the central axis of the cylindrical body at a constant speed, Since it rotates due to the friction between and and stops at a position where it balances with the drag force of the spring, the rotation angle at this stationary rotation position is read and measured in terms of the fluid viscosity.

When adjusting the viscosity using the viscosity measuring device, injection, mixing, until the measured value of the device reaches a preset value,
Operations such as dilution were performed to obtain a desired viscosity.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the method of adjusting the viscosity using the conventional rotary viscosity measuring device, the measuring device has a physical rotation angle such as a static rotation angle at which the spring and the cylindrical body are even. Since the displacement amount is replaced by the viscosity, the measured value is easily affected by the resistance of the parts that make up the measuring unit such as the spring, and it is difficult to improve the accuracy, and the cylinder There was a problem that it took time for the body to stand still and it took time to measure.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a viscosity adjusting device capable of quickly and accurately adjusting the viscosity.

[Structure of the Invention] Means for Solving the Problems A viscosity adjusting device of the present invention includes a stirring blade for stirring a viscous fluid for adjustment, an electric motor for rotating the stirring blade, and a load of the electric motor. Means for electrically detecting,
A setting dial for setting the viscosity to be adjusted, two display lamps that light up when the value detected by the load detection means is larger or smaller than the set value, and viscosity adjustment based on the lighting display of these display lamps. And a means for doing so.

Embodiment An embodiment of the viscosity adjusting device of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a main body casing, which is supported by a pipe stand 2 at a predetermined height position.

Reference numeral 3 denotes a stirring blade, which is attached to the lower end of the rotary shaft 4.

As is apparent from FIG. 3, the upper base of the rotary shaft 4 is connected to the rotary drive shaft 7a of the electric motor 7 via the intermediate shaft 5 and the joint 6.

Reference numeral 8 denotes a load detection device, which electrically detects the load of the electric motor 7. As a specific example of the load detecting device 8, for example, a load indicating device as disclosed in JP-A-57-16597 can be cited. As shown in FIG. 5, the load indicating device includes an oscillator A for generating a signal representing the voltage of the AC electric motor and an oscillator B for generating a signal representing the electric current of the electric motor. It is applied to a multiplying circuit C which produces a signal representative of the power supplied to the electric motor. The difference between the signal representing the supplied power and the signal proportional to the absolute value of the electric motor current is obtained by the differential circuit D. The signal proportional to the absolute value of the electric motor current is provided by the rectifier E as a variable proportional constant. The output signal of the differential circuit D is smoothed by the filter F and then given to the two level detectors G and H. The switching levels of those level detectors G and H are set by independent setting circuits I and J. Each level detector G, H is connected to a delay device K, L, respectively. The delay devices K and L have a common setting circuit M that sets the delay time. Delay device K is connected to maximum load relay driver N, while delay device L is connected to minimum load relay driver O. Further, the output signal of the electric current signal transmitter B of the electric motor is given to the integrators Q and R having different integration constants via the current detector P. The output terminals of the integrators Q and R are connected to the input terminals of the exclusive OR gate S.
The output terminal of the OR gate S is connected to the relay driver N,
It is connected to the second input terminal of O and disables the operation of the relay driver N, O for a certain time after the electric motor is started.

Since the viscosity adjusting device of this embodiment is configured as described above, first, the stirring blade 3 is placed in the adjusting container 9 containing the paint.
When the switch 10 is turned on and the switch 10 is turned on, the electric motor 7 is operated and the stirring blade 3 is rotated.

When the stirring blade 3 is rotated, a load acts on the electric motor 7 due to the viscous resistance of the paint, and this is detected by the load detection device 8.

When the viscosity of the paint indirectly detected by the load detection device 8 is larger than the value set by the setting dial 11, the display lamp 12 is turned on.

When the indicator lamp 12 is turned on, a pipe circuit for appropriately diluting the paint in the adjusting container 9 is opened to reduce the viscosity of the paint. As a result, the load on the electric motor 7 is lightened, and the load detection device 8 automatically detects this. When the predetermined viscosity is reached, the indicator lamp 12 goes off and it is confirmed that the paint has reached the set viscosity, so the pipe circuit is closed. During this time, stirring by the electric motor 7 is always performed, and after sufficiently stirring, the current motor is stopped.

When the viscosity is lower than the set value, the display lamp 13 may be turned on, and a high-viscosity paint may be mixed to increase the viscosity until the display lamp 13 disappears.

The injection, mixing, and dilution pipe circuits may be manual or automatic.

[Effect of the invention] (1) Since the viscosity is adjusted with the setting dial, the operation is extremely easy and can be set to any value at any time.
Further, since the two display lamps that are respectively lit when the value detected by the load detection means is larger or smaller than the set value are provided, it is possible to always reliably recognize the viscosity state of the viscous fluid even at a slightly distant place. it can.

(2) Since the viscosity can be automatically detected, the time and effort for adjusting the viscosity are greatly reduced, and the work efficiency is improved.

(3) It is possible to prevent an error in measurement that is likely to occur in a process such as injection, mixing, and dilution, and an operation error such as an error in the amount of injection, mixing, and dilution or insufficient stirring.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the viscosity adjusting device of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a sectional view showing an internal structure of a main body casing, and FIG. 4 is an IV of FIG. FIG. 5 is a block diagram showing an example of a load detection device, which is a cross-sectional view taken along line IV. 1 ... Main body casing, 2 ... Pipe stand, 3 ...
Stirring blade, 4 ... Rotary shaft, 5 ... Intermediate shaft, 6 ... Joint,
7 ... Electric motor, 7a ... Rotation drive shaft, 8 ... Load detection device, 9 ... Adjustment container, 10 ... Switch, 11 ... Setting dial, 12,13 ... Indicator lamp.

Claims (1)

[Scope of utility model registration request] 1. A stirring blade for stirring a viscous fluid for adjustment,
If the electric motor for rotating the stirring blade, means for electrically detecting the load of the electric motor, setting dial for setting the viscosity to be adjusted, and the value detected by the load detecting means are larger than the set value, or A viscosity adjusting device comprising: two display lamps that are turned on when the size is small; and means for adjusting the viscosity based on the lighting display of these display lamps.