JPS60181904A - Viscosity adjusting device of liquid - Google Patents

Abstract

PURPOSE:To execute an adjustment with a high accuracy by calculating a viscosity value at a prescribed temperature from a viscosity value and a temperature value of a liquid to be adjusted, which have been detected, and adjusting a viscosity by said viscosity value. CONSTITUTION:A viscosity and a temperature of a liquid to be adjusted are detected by a viscosity detecting means (a) and a temperature detecting means (b), respectively, and sent to a calculating means (d). A viscosity value at a prescribed temperature is calculated by this calculating means (d), and also it is displayed by a display means (h). Said calculated viscosity value is compared with a viscosity value of an object set by a setting means (e), and based on this result, a viscosity adjusting liquid is added to the liquid to be adjusted, by a viscosity adjusting liquid adding means (g), and it is adjusted to an object viscosity value.

Description

[Detailed Description of the Invention] The present invention inputs the detected viscosity value and temperature value of the liquid to be adjusted, calculates the viscosity at a separately predetermined temperature value based on them, and uses the calculation result as an input. This device relates to a device that adjusts the viscosity of a liquid to be adjusted to a target value based on Therefore, when measuring viscosity, it is usual to precisely adjust the temperature of the liquid to be measured. In such cases, not only is a device such as a constant temperature bath required to keep the liquid to be measured at a predetermined temperature (herein referred to as a predetermined temperature), but also a device to maintain the temperature of the constant liquid The disadvantage is that the tWL must be left in a constant temperature bath for a certain period of time until it reaches a predetermined temperature.

In addition, when measuring the viscosity by taking out a part of the liquid to be adjusted in a large container, it is possible to take out a part in a small container or through a pump or piping. The present invention has a drawback in that the temperature of the liquid to be adjusted (i.e., the liquid to be measured) changes in a way that is difficult to predict due to changes in small containers, equipment such as pumps and piping, and ambient temperature, and the measured viscosity value is unreliable. The object of the present invention is to provide a device which does not have the various drawbacks mentioned above and which can easily obtain accurate viscosity values and, based on the results, precisely adjust the viscosity of a liquid to be regulated to a target viscosity value. It comes out.

The purpose of the present invention is to input the detected viscosity value and temperature value of the liquid to be adjusted, calculate the viscosity value at a predetermined temperature, and add the viscosity adjusting liquid to the liquid to adjust the viscosity based on the calculation results. This is achieved by adjusting the

That is, the present invention provides: a) a means for detecting the viscosity of the liquid to be adjusted; b6 a means for detecting the temperature of the liquid to be adjusted; C0 a means for inputting the viscosity detection value and the temperature detection value by the above means; means for calculating the viscosity value at a separately predetermined temperature value based on the input value by; means for setting the target viscosity value of the liquid to be adjusted; f. the output and viscosity of the calculation means; A liquid viscosity adjusting device comprising means for comparing the outputs of the value setting means, g, and means for adding the viscosity adjusting liquid to the liquid to be adjusted based on the output of the comparing means. .

FIG. 1 is a block diagram of the apparatus of the present invention.

The viscosity and temperature of the liquid to be adjusted are determined by viscosity detection and output means a, respectively.
, is detected by the rM degree detection means b5.

At this time, the temperature of the liquid to be adjusted may be different from the predetermined temperature or may be the same.

The detected viscosity value and temperature value are sent to the calculation means d by the input means C1. The calculation means d calculates the viscosity value at a predetermined temperature based on the viscosity value and the temperature value, and displays the value on the display means if necessary.

The output of the means for setting the target viscosity value is compared with the output of the calculating means d- by the comparing means f4, and the viscosity adjusting liquid is added to the liquid to be adjusted by the viscosity adjusting liquid adding means g. O To detect the viscosity of the liquid to be adjusted, install a viscosity detection means in a container such as a reaction pot or tank containing the liquid to be adjusted. However, in view of the ease of cleaning and maintenance of the viscosity detection means, it is preferable to remove a portion of the liquid to be adjusted from a large container to the outside of the container to detect 70 viscosity. It is preferable to take out a part of the liquid to be adjusted outside in a large container. The liquid to be adjusted can be taken to the detection means for detection, but in this case, manual labor is required, so as shown in Figure 2, the liquid to be adjusted is taken out from a large container using a pump and then pumped. It is preferable to guide the liquid to the viscosity detection means using piping for detection. In FIG. , via
0 to be sent to the viscosity detector 6 and temperature detector 7 @
When the sewage sufficiently fills the viscosity detector 6 and temperature detector 7, the liquid to be adjusted 2 passes through the three-way valve 5 and bypass circuit 11.
At the same time, it is returned to the original container via the three-way valve 8.
Viscosity detection and temperature detection are performed. When the viscosity detection is completed, the 3-way valve 9 is switched and cleaning water is supplied from the supply port 10 in the direction of the arrow, and the 3-way valve 9.5.8, the piping 4, the viscosity detector 6, and the temperature detector 7 , bypass circuit 11, are cleaned and discharged to the outside via the three-way valve 8. When the viscosity of the liquid to be adjusted 2 is different from the target value, the viscosity adjusting liquid is supplied from the liquid adjusting liquid supply port 14 in the direction of the arrow, and is increased by +ttil by the measuring device 12, and the viscosity adjusting liquid is added to the viscosity adjusting liquid supply port 14.
The zero viscosity adjustment I11 added to the liquid to be adjusted may be any substance that increases or decreases the viscosity of the liquid to be adjusted by addition and mixing, and is not particularly limited to liquids.

In FIG. 2, only one set of the meter 12, addition valve 13, and viscosity adjusting liquid supply port 14 is shown, but they are used for adjusting liquid to increase the viscosity of the liquid to be adjusted and for adjusting to decrease the viscosity of the liquid to be adjusted. One set for each type of liquid may be prepared.Also, the measuring device 12 may be a volume meter, a Todo-ni meter, a flow velocity integrating meter, etc., but is not particularly limited.

Furthermore, it is also possible to add the viscosity adjusting liquid by opening the addition valve 13° for a certain period of time without using a measuring device.@These series of operations are performed while being controlled by a control device such as a sequencer or a conbeater. is preferable.

The viscometer used as the viscosity detection means is not particularly limited to a rotary type, a vibrating type, a float type, a capillary type, a falling type, etc., but a falling type viscometer, a rotational type viscometer, etc. are particularly preferable.

Temperature detection is preferably performed at the viscosity detection site or at a site as close as possible to the viscosity detection site, and detection elements include platinum resistance thermometers, thermistor thermometers, thermocouple elements, etc. It is not limited.

As the input means, a device suitable for output signals from the viscosity detection means and temperature detection means and conditions for input to the calculation means may be used. Generally 4-20mA, 1-5V, BO
It is preferable to use a device that inputs a D5Pt100Ω signal, converts it into a 12-bit digital value or BOD, and supplies it to the calculation means. The input period is not particularly limited, but is preferably about 1 second to 1 minute.

The calculation means is not particularly limited as long as it can be any device suitable for the calculation method, but it is preferable to use a converter in terms of ease and flexibility. The calculation method may be based on the properties, properties, and measurement accuracy of the liquid to be adjusted.For example, L Measure the viscosity values of the liquid to be adjusted at several different temperatures in advance, and calculate the viscosity and temperature of the liquid to be adjusted. A method in which the relationship is approximated by a function such as the -th equation or quadratic equation, and the detected viscosity value and temperature value are substituted into this to calculate the viscosity at a predetermined temperature.

2 Measure the viscosity values of the liquid to be adjusted in advance at several different temperatures, approximate the relationship between the obtained viscosity and temperature with an exponential function,
This method calculates the viscosity at a given temperature by substituting the detected viscosity value and temperature value.

3. Determine the viscosity values of the liquid to be adjusted at several different temperatures in advance, store the obtained viscosity values and temperature values in the memory as a numerical table, and write the values close to the actual measured values of viscosity and temperature in the numerical table. A method to calculate the viscosity at a given temperature by searching.

ζ In advance, the viscosity values of the liquid to be adjusted at several different temperatures are expressed as m
11, and the obtained logarithm of viscosity (Iogda) and temperature*T
A preferred method is to approximate the reciprocal (1/T) of (1/T) using the following equation, and substitute the detected viscosity value and temperature value thereto to calculate the viscosity at a predetermined value.

As the display means, normal indicators such as analog meter displays, digital displays, and printed characters can be used. Preferably a container. The display content must be the viscosity value at a predetermined temperature, but other than that, the zero viscosity value setting means that can display the detected viscosity value and temperature value may include, but is not limited to, a digital switch, In addition to typewriters, keyboards, etc., we will also develop a method for setting settings without human intervention using a combi-theta.

The comparison means compares the output of the calculation means and the output of the viscosity determination means, and includes, for example, L A device that outputs which one is larger or smaller λ A device that outputs which one is larger or smaller Based on the comparison results, there are devices that calculate the amount of viscosity adjusting liquid required to adjust the viscosity to the target viscosity. Well, there are no particular limitations.

The viscosity adjusting liquid adding means is not particularly limited as long as it has the function of adding the viscosity adjusting liquid to the liquid to be adjusted according to the output of the comparing means.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the apparatus of the present invention. FIG. 2 is a schematic diagram of an apparatus according to an embodiment of the present invention. 1... Container, 2... Liquid to be adjusted, 3... Pump, 4
...Piping, 5...3-way valve, 6...Viscosity detector, 7
...Temperature detector, 8...3-way valve, 9...3-way valve,
10...Washing water supply port, 11...Bypass circuit, 1
2...Measuring device, 13...Addition valve, 14...Viscosity adjusting liquid supply port Figure 1

Claims (1)

[Claims] 1. a) Means for detecting the viscosity of the liquid to be adjusted b) Means for detecting the temperature of the liquid to be adjusted C) Means for inputting the viscosity detection value and temperature detection value by the means d) The input Means for calculating the viscosity value at a separately predetermined temperature value based on the input value by the means e) Means for setting the target viscosity value of the liquid to be adjusted f) The output of the calculation means and the viscosity value g) means for comparing the outputs of the setting means; g) a liquid viscosity adjusting device comprising means for adding 1.14 ml liquid to the liquid to be adjusted based on the output of the comparison means; 2. The viscosity adjustment of the liquid according to claim 1, which is equipped with a means for sending the required amount of liquid to the viscosity detection means from a large amount of all plates to be adjusted. 3. Claim 2 in which a pump is used as a liquid feeding means
Liquid viscosity adjusting device as described in Section 1. 4. Liquid viscosity adjusting device 0 according to any one of claims 1 to 3, comprising means for displaying the output of the calculation means.