JP3482151B2 - Liquid supply device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid supply device for supplying liquid to a liquid supply target section.

[0002]

2. Description of the Related Art A conventional liquid supply device, for example, a lubricating oil supply device, supplies lubricating oil discharged from a lubricating oil pump to a lubricating oil supply target portion such as a gear or a bearing only by a metal pipe.

[0003]

With this conventional lubricating oil supply device, it is not possible to visually check the lubricating oil supply state in the pipe from the outside, and for example, the deterioration of the lubricating oil pump capacity or the piping Even if poor lubrication occurs due to clogging,
There is a problem that the poor lubrication state cannot be easily recognized.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to easily visually check the supply state of the liquid in the pipe line in the liquid supply device.

[0005]

According to a first aspect of the present invention, there is provided a liquid supply pipeline for supplying a liquid to a liquid supply target portion and a liquid supply state provided from the outside in the liquid supply pipeline. The see-through liquid supply state confirmation container and this liquid supply state confirmation container
The air pressure supply line that supplies air pressure to the inside and this air pressure
It is installed in the supply line and is supplied to the liquid supply state confirmation container.
And a pressure control valve for controlling the air pressure .

Then, in the operating state in which the liquid is being supplied to the liquid supply target portion by the liquid supply pipe, the liquid supply state confirmation container which can be seen from the outside is used to visually check the liquid supply state in the pipe. However, it is necessary to detect the deterioration of the capacity of the liquid pump and the clogging of the piping, which cause poor lubrication, at an early stage. At this time, air
Air pressure is supplied to the container through the pressure supply line
By doing so, the liquid supply target is better than the liquid supply state confirmation container.
Part is located in a high place or the load pressure of the part to be supplied with liquid.
Even if the temperature is high, the liquid is supplied to the target part by the air pressure.
In addition to supply, depending on the head of the liquid supply target and the load pressure
Check the liquid supply status with the pressure control valve.
Air generated in the liquid supply state confirmation container
Suitable for external confirmation of the liquid-liquid interface between the pool and the liquid.
Adjust to a painful level.

According to a second aspect of the present invention, the liquid supply state confirmation container in the liquid supply apparatus according to the first aspect is fixed to a tubular body portion having both end surfaces opened and both end surfaces of the body portion. And a transparent member, which is provided between the both end surfaces of the body portion and the respective transparent flat plates, and the body portion has a liquid inlet and a liquid inlet communicating with the liquid supply pipeline. A liquid outlet and an air port communicating with the air pressure supply conduit are provided.

[0008] Then, both end surfaces of the body portion provided with a liquid inlet and a liquid outlet communicated with the liquid supply pipeline and an air port communicated with the air pressure supply pipeline can be respectively seen through seal members. A liquid supply state confirmation container can be easily formed by fixing the transparent flat plate. In addition, it is easy to confirm the air-liquid interface that fluctuates along the transparent transparent plate from the outside.

[0009] The invention described in claim 3, claim 1 or
Alternatively, the liquid in the liquid supply device described in 2 is used as a lubricating oil.

Then, in the operating state in which the lubricating oil is being supplied to the portion to be supplied with the lubricating oil by the lubricating oil supply conduit, the lubricating oil is supplied in the conduit by the lubricating oil supply state confirmation container which can be seen from the outside. Visually check the condition, and detect early deterioration of the lubricating oil pump capacity or clogging of pipes, which causes poor lubrication. Also, by supplying air pressure into the lubricating oil supply status confirmation container through the air pressure supply pipe, the case where the lubricating oil supply target part is located higher than the lubricating oil supply status verification container or the lubricating oil supply target part Even when the load pressure is high, the lubricating oil is supplied to the lubrication oil supply target part by air pressure, and the air pressure inside the container is checked by the pressure control valve according to the head of the lubrication oil supply target part or the load pressure. by controlling, it adjusts the appropriate level of the air-oil interface can be confirmed from the outside between the lubricating oil supply state checking container to the resulting air reservoir and lubricant.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the embodiment shown in FIGS.

1 and 2 show a lubricating oil supply device as a liquid supply device, in which a lubricating oil tank 12 containing a lubricating oil 11 as a liquid is used as a liquid pump driven by an electric motor 13. The suction pipe 15 of the pump 14 is inserted, and the lubricating oil supply pipe line 16 is connected to the discharge port of the lubricating oil pump 14.

The lubricating oil supply conduit 16 is formed by a distribution valve 17 as a plurality of liquid supply conduits 21, 22, 23.
These lubricating oil supply pipe lines 21, 22, 23 are provided above the lubricating oil supply state confirmation containers 24, 25, 26 as liquid supply state confirmation containers through which the supply state of the lubricating oil 11 can be seen from the outside. Are connected to the inlet connection portions 27, 28, and 29, respectively, which are respectively provided in the
To the outlet connection portions 31, 32, 33 respectively provided at the lower portions of the oil supply pipes through the lubricating oil supply pipe lines 34, 35, 36 as liquid supply pipe lines. 38, 39
Are respectively connected, and these lubricating oil supply target parts 37, 3 are connected.
8 and 39 are communicated with the lubricating oil tank 12 by an oil drain pipe 40, and a circulation path for the lubricating oil 11 is formed.

The lubrication oil supply target parts 37, 38, 39 are, for example, gearboxes, bearings or spindles of machine tools, and monitor the supply state of the lubrication oil 11 to these lubrication oil supply target parts 37, 38, 39. To do.

At the shoulders of the lubricating oil supply state confirmation containers 24, 25, 26 interposed between the lubricating oil supply pipelines 21, 22, 23 and the lubricating oil supply pipelines 34, 35, 36, respectively. Air connection 4
1, 42, 43 are provided respectively and these air connections 4
1, 42, and 43 are the respective lubricating oil supply state confirmation containers 24, 2
Air pressure supply pipe lines 44, 45, 46 for supplying air pressure to the insides of 5, 26 are respectively connected.

In these air pressure supply lines 44, 45, 46, as shown in FIG. 1, the air in the air supplied from the air pressure source 47 to the respective lubricating oil supply state confirmation containers 24, 25, 26 is checked. Filter 48 for removing foreign matters and containers 24, 2 for confirming the supply status of each lubricating oil
A pressure reducing valve 49 as a pressure control valve for controlling the air pressure supplied to each of the pressure reducing valves 5 and 26 is provided in series.
49 allows the internal pressure of each lubricating oil supply state confirmation container 24, 25, 26 to be individually adjusted.

As shown in FIG. 3, each of the lubricating oil supply state confirmation containers 24, 25, 26 is formed in a drum shape around a cylindrical body portion 51 whose left and right end surfaces are open.

That is, annular recessed grooves 52 are formed on both left and right end surfaces of the body portion 51, and sealing members 53 such as rubber plate packings formed in an annular shape are formed in the left and right recessed grooves 52, respectively. The transparent flat plates 54 formed into a circular shape by a see-through acrylic plate or the like are closely attached to the left and right end surfaces of the body portion 51 through the seal members 53, respectively, and the outside of these transparent flat plates 54 is fitted. A pressing plate 55 such as an iron plate formed in an annular shape is abutted on the side surface, and these screws 56 are screwed into the body portion 51 from the outside of the pressing plate 55 through the transparent flat plate 54 and the seal member 53. Are fixed together.

In the body portion 51, the lubricating oil supply line 2
Lubricating oil inlet 57 as a liquid inlet communicating with 1, 22, 23
A lubricating oil outlet 58 as a liquid outlet that communicates with the lubricating oil supply pipelines 34, 35, 36, and the pneumatic supply pipelines 44, 45,
Air ports 59 communicating with 46 are respectively provided in the radial direction. The lubricating oil inlet 57, the lubricating oil outlet 58 and the air port 59 are screw holes.

Next, the operation of the illustrated embodiment will be described mainly with reference to the lubricating oil supply line shown in FIG.

Lubricating oil 11 discharged from the lubricating oil pump 14
Is a lubricating oil supply line 16, a distribution valve 17, a lubricating oil supply line 21,
It is supplied to the lubricating oil supply target portion 37 via the lubricating oil supply state confirmation container 24 and the lubricating oil supply pipe line 34.

In this way, the lubricating oil 11 is applied to the lubricating oil supply target portion 37.
Is supplied, the supply condition of the lubricating oil 11 in the pipeline is visually confirmed on the transparent flat plate 54 of the lubricating oil supply state confirmation container 24 that is visible from the outside, which may cause lubrication failure. The deterioration of the performance of the lubricating oil pump 14 and the clogging of the piping are detected early.

For example, the air-oil interface 62 as an air-liquid interface between the air reservoir 61 and the lubricating oil 11 in the lubricating oil supply state confirmation container 24 is normally in the normal state as shown in FIG. If it is set so as to be located at the center level of the supply state confirmation container 24, when the lubricating oil supply capacity of the lubricating oil pump 14 is reduced, the air-oil boundary surface 62 is lowered from the center level, and the lubricating oil Lubricant supply target part 37 from the supply status confirmation container 24
When the pipe on the side is clogged, the air-oil boundary surface 62 rises above the central level.

As described above, the lubricating oil supply state can be visually checked and easily checked only by externally monitoring the level fluctuation of the air-oil boundary surface 62 in the lubricating oil supply state confirmation container 24, and therefore, it is possible to check the daily routine. Effective for checking for poor lubrication.

At this time, the air pressure adjusted by the pressure reducing valve 49 is supplied to the lubricating oil supply state confirmation container 24 by the air pressure supply line 44.
As shown in FIG. 2, by supplying pressure into the body part 51 of the lubricating oil supply target parts 37, 38, 39 located at a position higher than the lubricating oil supply state confirmation containers 24, 25, 26, , Even if the load pressure of the lubricating oil supply target parts 37, 38, 39 is high, the lubricating oil 11 is supplied to the lubricating oil supply target parts 37, 38, 39 by the air pressure.
It can be supplied by pushing up.

At this time, the pressure is reduced in accordance with the drop between the lubricating oil supply target parts 37, 38, 39 and the lubricating oil supply state confirmation containers 24, 25, 26 and the load pressure of the lubricating oil supply target parts 37, 38, 39. By controlling the air pressure in each of the lubricating oil supply state confirmation containers 24, 25, and 26 by the valve 49, the lubricating oil supply state confirmation container 2
The air-oil boundary surface 62 between the air pool 61 and the lubricating oil 11 generated in 4, 25, 26 is adjusted to an appropriate level that can be confirmed from the outside.

For example, when there is a large difference between the lubricating oil supply target parts 37, 38, 39 and the lubricating oil supply state confirmation containers 24, 25, 26, the pressure reducing valve 49 causes the lubricating oil supply state confirmation containers 24, 25, 26. The air pressure supplied to the inside is controlled to be high according to the head difference, so that the air-oil boundary surface 62 is maintained at an appropriate level that can be confirmed from the outside, preferably at the center level of the transparent flat plate 54.

Further, for example, as shown in FIG. 2, the lubricating oil supply target parts 37, 38, 39 and the lubricating oil supply state confirmation container 2
Even if the heads of 4, 25, and 26 are the same, the load pressure may differ depending on the lubrication oil supply target parts 37, 38, 39. Therefore, from the pressure reducing valve 49 to the lubrication oil supply state confirmation container 24. ，
By proportionally controlling the air pressure supplied to the insides of 25 and 26 according to the load pressure, the air-oil boundary surface 62 is similarly maintained at an appropriate level that can be confirmed from the outside.

Lubricating oil supply state confirmation containers 24, 25, 26
A transparent flat plate 54, which is visible through the seal members 53, is attached to both end faces of the body portion 51 provided with the lubricating oil inlet 57, the lubricating oil outlet 58, and the air port 59, with a holding plate 55 and a screw 56. It can be easily formed by fixing and the air-oil boundary surface 62 that fluctuates along the transparent transparent flat plate 54 is one straight line that fluctuates in the vertical direction, so it is easy to confirm from the outside.

[0030]

According to the first aspect of the present invention, it is possible to visually inspect the liquid supply state confirmation container that can be seen from the outside in an operating state in which the liquid is being supplied to the liquid supply target portion by the liquid supply pipe line. As a result, it is possible to visually check the supply state of the liquid in the pipeline, to detect the deterioration of the performance of the liquid pump or the clogging of the pipe, which causes poor lubrication, at an early stage, and to save the maintenance cost. At this time, the liquid is supplied by the pneumatic supply line.
Supplying the liquid status by supplying air pressure into the container.
Located in a place where the liquid supply target part is higher than the supply status confirmation container
Even if the liquid supply target part has a high load pressure,
Liquid to be supplied to the Ekikyo supply target portion by pressure. further,
Depending on the head of the liquid supply target and the load pressure, the pressure control valve
By controlling the air pressure in the liquid supply state confirmation container,
Check the liquid supply state between the air pool and liquid generated in the container.
Adjust the air-liquid interface to an appropriate level that can be confirmed from the outside.
Wear.

According to the second aspect of the present invention, both end faces of the body portion provided with the liquid inlet and the liquid outlet communicating with the liquid supply pipeline and the air port communicating with the air pressure supply pipeline are provided. The liquid supply state confirmation container can be easily formed by fixing the transparent transparent plates through the seal members. Further, the air-liquid boundary surface that fluctuates along the transparent transparent flat plate can be easily confirmed from the outside, and early detection of the deterioration of the capacity of the liquid pump or the clogging of the pipe, which causes poor lubrication, can be ensured.

According to the third aspect of the present invention, since the liquid in the liquid supply device is lubricating oil, the lubricating oil is supplied to the lubricating oil supply target portion by the lubricating oil supply pipe line, and the external condition is maintained. Lubricant supply status check that can be seen more clearly By visually inspecting the container, you can visually check the supply status of the lubricant in the pipeline, and check the lubrication oil pump capacity deterioration or pipe clogging that may cause lubrication failure. It can be detected early and the maintenance cost can be saved. Also, by supplying air pressure into the lubricating oil supply status confirmation container through the air pressure supply pipe, the case where the lubricating oil supply target part is located higher than the lubricating oil supply status verification container or the lubricating oil supply target part Even when the load pressure is high, the lubricating oil can be supplied to the lubricating oil supply target portion by the air pressure. Further, by controlling the air pressure in the lubricating oil supply state confirmation container with a pressure control valve according to the head of the lubricating oil supply target and the load pressure, the air pool and lubricating oil generated in the lubricating oil supply state confirmation container Can adjust the air-oil interface between
It

[Brief description of drawings]

FIG. 1 is a piping diagram showing an embodiment of a liquid supply apparatus according to the present invention.

FIG. 2 is a front view showing an arrangement example of each part of the same liquid supply apparatus.

FIG. 3 is a cross-sectional view showing an example of a lubricating oil supply state confirmation container used in the above liquid supply device.

[Explanation of symbols]

11 Lubricating oil as liquid 21,34 Lubricating oil supply pipeline as liquid supply pipeline 22,35 Lubricating oil supply pipeline as liquid supply pipeline 23,36 Lubricating oil supply pipeline as fluid supply pipeline 24, 25,26 Lubricant supply status confirmation container as a liquid supply status confirmation container 37,38,39 Lubrication oil supply target part as a liquid supply target part 44,45,46 Air pressure supply conduit 49 Pressure reducing valve 51 as a pressure control valve Body 53 Seal member 54 Transparent flat plate 57 Lubricating oil inlet as liquid inlet 58 Lubricating oil outlet as liquid outlet 59 Air port

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-54-151283 (JP, A) Actually open 60-178698 (JP, U) Actually open 3-4998 (JP, U) Actual public 34- 13408 (JP, Y1) S.K. 35-4323 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) F16N 29/00

Claims (3)

(57) [Claims] 1. A liquid supply conduit for supplying a liquid to a liquid supply target portion, a liquid supply condition confirmation container provided in the liquid supply conduit for allowing the liquid supply condition to be seen from the outside, and the liquid supply condition. Air that supplies air pressure inside the confirmation container
Pressure supply line and liquid supply state confirmation container provided in this air pressure supply line
And a pressure control valve for controlling the air pressure supplied to the liquid supply device. 2. The liquid supply state confirmation container includes a tubular body portion having both end surfaces opened, transparent transparent flat plates fixed to both end surfaces of the body portion, and both end surfaces of the body portion and each transparent body. A seal member provided between the flat plate and a flat plate, and the body portion is provided with a liquid inlet and a liquid outlet communicating with the liquid supply pipeline, and an air port communicating with the air pressure supply pipeline. The liquid supply apparatus according to claim 1 , wherein the liquid supply apparatus is provided. 3. A liquid, a liquid supply apparatus according to claim 1 or 2, wherein it is a lubricating oil.