JPS63120240A - Apparatus for measuring pollution level of liquid - Google Patents

Abstract

PURPOSE:To easily and rapidly perform the taking-out and pressurization of a liquid and the measurement of the pollution level of said liquid, by a method wherein the liquid sucked from a liquid container by a pump part consisting of a piston and a cylinder through a suction part is transmitted to a measuring filter under constant pressure through a constant pressure mechanism. CONSTITUTION:A suction pipe 7 is inserted in a container receiving hydraulic oil to be measured and a piston 3 is retracted by a grip part 4 to suck the hydraulic oil in a cylinder 2. This suction operation is appropriately performed to suck the hydraulic oil in the cylinder 2 and an elastomer pipe 10. Thereafter, the container is detached from the main body and a pressure measuring part equipped with a special filter is connected to a connection screw 11. When the piston 3 is advanced by the grip part 4, the hydraulic oil is supplied to the pressure measuring part under constant pressure by the constant pressure mechanism 8 constituted of a check valve 9 and the elastomer pipe 10 and the pollution level of the hydraulic oil is measured from the quantity of the hydraulic oil passing through the special filter.

Description

Detailed Description of the Invention (Industrial Field of Application)
The present invention relates to a liquid contamination degree measuring device for measuring the contamination degree of liquids such as various solvents or fuel oil.

(Prior Art and its Problems) Hydraulic actuating devices are often used in various automatic devices and equipment, machine tools, construction machinery, air planes, and the like. These hydraulic devices include various pumps for generating hydraulic pressure,
If fluids such as hydraulic oil become contaminated in all control valves, hydraulic cylinders, etc., their performance will be significantly affected. That is, as the contamination of these liquids progresses, smooth operating performance cannot be expected, and furthermore, the equipment itself may be damaged. Therefore, it is necessary to take out the liquid and filter or replace it at the appropriate time.
In order to carry out necessary and sufficient maintenance, it is necessary to properly grasp the extent to which the liquid is contaminated at all times.

To accurately determine the degree of contamination of a liquid, it is sufficient to take out the liquid, analyze it as appropriate, and measure it. It is clear that when precision is required, accurate results can be obtained by measuring with a large measuring instrument. However, in actual sites, etc., although high accuracy is not required, a measurement technique that allows quick and easy measurement is required. Therefore, an apparatus is known that measures the degree of contamination of a liquid such as hydraulic oil by passing a pressurized liquid through a special filter and measuring the amount of liquid until a constant pressure is reached.

However, many of such contamination level measuring devices do not have a pressurizing device for liquid, and as a general rule, they are directly connected to the liquid flow path of a hydraulic device for measurement. However, while conventional measuring devices of this type use a pressure of about 7 kg/tyl to 10 kg/ci,
The hydraulic pressure of the current hydraulic system is several tens of kg/e? It often reaches more than 100 kg/cff1. Therefore, in the conventional device, direct measurement was not possible, and the extracted liquid was pressurized with a separate pressurizing device and then measured with the above-mentioned measuring device.

The present invention applies not only to such hydraulic oil but also to engine oil,
It is an object of the present invention to provide a liquid contamination level measuring device that can extremely easily and quickly perform extraction, pressurization, and contamination level measurement of liquids such as water, various volatile solvents, or fuel oil.

(Means for Solving the Problems) This object is to provide a liquid contamination level measuring device having the structure described in the claims, that is, a suction part for sucking liquid from a liquid container, and a suction part. A pump section consisting of a piston and a cylinder for pressurizing the liquid sucked in through the pump section, and a constant pressure 81 for transmitting the liquid of this pump section at a constant pressure to the measurement filter! , II.

According to the liquid contamination level measuring device of the present invention, it is small and lightweight, making it portable, and it is extremely easy to take out, pressurize, and measure the liquid by hand without the need for electric or other pressurizing devices. It can be implemented.

(Example) The invention will now be disclosed with reference to the accompanying drawings, in which examples are shown.

In this embodiment, a description will be given of hydraulic oil among lubricating oils, but the present invention can also be applied to other liquids such as engine oil, water, various solvents, and fuel oil.

FIG. 1 is a sectional view showing the main parts of the hydraulic oil contamination level measuring device according to this embodiment. According to the figure, on the left side of the main body 1 of the apparatus is a piston pump section for sucking and pressurizing hydraulic oil. This piston pump consists of a piston 3 movable over a stroke S in a cylinder 2 which is part of a body 1, and a rod 5 with a handle 4 for actuating this piston.

At the bottom of the figure is the hydraulic oil suction mechanism. This suction mechanism is
It consists of a suction pipe 7 that communicates with the cylinder 2 via a check valve 6.

A constant pressure mechanism 8 is disposed on the right side of the figure. This constant pressure mechanism 8
are check valve 9 and cylinder 2 that operate at constant pressure.
and an elastic tube 10 serving as a relief valve that connects between the check valve 9 and the check valve 9. This elastic tube 1
0 is made of a rubber tube, and the elastic tube 10
The main body 10a around the main body 10a is formed to have a larger diameter than the elastic tube 10 in a steady state, and has an air hole 13 formed therein.

Therefore, since a space K is formed between the elastic tube 10 and the main body 10a, as the oil pressure inside the elastic tube 10 increases,
The elastic tube 10 is expandable.

Therefore, the elastic tube 10 repeatedly expands and contracts depending on the oil pressure, and the oil pressure inside the cylinder 2 and the elastic tube 10 is always kept constant, so that oil at a constant pressure can be supplied to the measuring instrument. Since oil at a constant pressure is supplied to the measuring instrument in this way, measurements can be made.On the other hand, if the oil pressure is not always constant, measurements cannot be made.

A connecting screw 11 for connecting a measuring device, which will be described later, is formed at the tip of the check valve 9, and communicates with a filter section of the measuring section. Further, a pressure gauge connecting screw 12 is formed between the cylinder 2 and the constant pressure mechanism 8.

A pressure gauge (2) is connected to this pressure gauge connection screw 12 to measure the pressure when pressurized by the hydraulic oil pump.

FIG. 2 shows an example of the measuring section of the hydraulic oil contamination level measuring device according to the present invention, and the connecting section 11a is compatible with the connecting screw 11 of FIG. 1. The measuring section is provided with a pressure measuring section 20 and a piston 22 that moves within a cylinder 21 to transmit pressure to the pressure measuring section 20. The piston 22 and the pressure measuring section 20 are connected by a piston rod 23.

A special filter 2 is installed between the connection part 11a and the cylinder 21.
4, and the part where this special filter 24 is located and the cylinder 21 are connected through a small hole 25.

The pressure measuring section 20 is of a dial gauge type and measures the degree of contamination based on the amount of oil added to the piston 22 through a special filter 24.

In other words, oil enters from the connecting screw 11 to operate the main body 1. Oil passes through the special filter 24 and reaches the piston 22.
However, oil with increasing contamination is filtered through filter 2.
Since the amount passing through the point 4 is small, the piston 22 does not rise 2" and therefore the number of revolutions of the pointer 26 is also small.

On the other hand, when new oil or oil with a low degree of contamination passes through the filter 24, the piston 22 rises and the number of rotations of the pointer 26.27 increases.
The degree of oil contamination can be easily determined by looking at the . At the same time, each pointer is reset to zero using the push button 28.

The operation of the hydraulic oil contamination degree measuring device according to this embodiment will be explained based on FIG.

A pressure gauge V having an appropriate pressure range is connected to the connection thread 12.

Therefore, the suction pipe 7 is inserted into the hydraulic oil container T to be measured, and the screw 1-3 is retracted using the grip part 4, and the hydraulic oil is pumped into the cylinder 2.
(Figure 3(a)). After that, remove the main body 1 from the container T. It goes without saying that the length, direction, etc. of the suction pipe 7 should be considered so that hydraulic oil in an average state can be taken out. This suction operation is performed as appropriate to suck the hydraulic oil into the cylinder 2 and the elastic tube 10.

In this state, a pressure measuring section with a timing device as shown in FIG. 2 is connected to the connecting screw 11. Then, the screw 1-3 is advanced by the grip part 4 and held so that the pressure gauge connected to the connection lug 512 indicates a constant value (see Fig. 3).
b)). In this case, the degree of contamination of the hydraulic oil can be measured by the pressure measurement unit from the oil level that reaches a certain pressure. During this time, since the hydraulic pressure is transmitted via the constant pressure mechanism 8, there is no need to make delicate pressure adjustments on the pressure pump side, and the degree of contamination of the hydraulic oil can be easily and simply measured.

(Effects of the Invention) As described above, according to the liquid contamination degree measuring device according to the present invention, the contamination degree of a liquid can be easily measured by sucking and pressurizing a small amount of liquid, and no special auxiliary equipment is required. It is possible to manage liquids without sacrificing the amount of water and achieve the desired purpose.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view showing the main parts of a liquid contamination level measuring device, and FIG. FIG. 3 is an explanatory diagram showing the state of use. 1. Body 2. Cylinder 3. Piston 6. Check valve 7. Suction pipe 8. Constant pressure mechanism 9. Check valve 10. Relief valve 11. Measuring part connection screw 12. Pressure gauge connection screw

Claims (2)

[Claims] (1) Suction the liquid and pass it through a special filter at a constant pressure,
A liquid contamination degree measuring device that measures the degree of contamination of a liquid by measuring the amount of liquid that has passed through this filter includes a suction mechanism for sucking liquid from a liquid container, and a liquid sucked through this suction mechanism. 1. A liquid contamination level measuring device comprising: a pump section consisting of a piston and a cylinder for pressurizing liquid; and a constant pressure mechanism for transmitting liquid from the pump section at a constant pressure to a measuring filter. (2) The liquid contamination level measuring device according to claim 1, wherein the constant pressure mechanism includes a relief valve and a check valve.