JPH0528206Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to oil tanks for general industrial hydraulic equipment, and in particular to so-called non-mounted simple oil tanks that do not have pumps, motors, valves, etc. mounted on the top of the tank. Regarding.

(Prior art) Conventional non-mounted oil tanks include, for example, the upper end of the tank body and the lid, as shown in JOHS 114 of the Japan Hydraulic and Pneumatic Industry Association Standards "Popular Oil Tanks for Hydraulic Units". The inside and outside of the tank are communicated via an air breather with an air filter attached to the tank lid, and the tank side plate is made of acrylic or glass for monitoring the oil level. An expensive oil level gauge was installed.

(Problems to be Solved by the Invention) Such conventional non-mounted oil tanks require hole drilling for attaching an air breather and an expensive oil level gauge, as well as complicated sealing of the attachment part. It is expensive, as it requires a lot of man-hours to fasten the joint surface between the top end of the main body and the lid with a large number of bolts via a gasket, and since it is sealed, only a small amount of oil dirt in the tank can be seen on the oil level gauge. It could only be detected through oil, and sufficient confirmation could not be made.

The purpose of this invention is to solve the above-mentioned drawbacks of conventional products by attaching an air breather to the tank lid,
It is inexpensive because there is no need to install an oil level gauge on the side of the tank, and there is no need to seal the tank between the top end of the tank body and the lid with a large number of bolts via a gasket. To provide a simple oil tank whose condition can be sufficiently monitored.

(Means for Solving the Problems) Therefore, the present invention solves the problems of the above-mentioned conventional products by providing a simplified oil tank as described in the claims of the utility model registration.

(Example) Next, FIGS. 1 to 4 show the first example of the present invention.
This will be explained with reference to the figures. Figure 1 is a sectional elevational view of a simple oil tank according to the first embodiment of the present invention (-
along the line) and an opening (20,
Tank body 2 having a
a lid 1 that covers the upper end 19 of the main body 2 and has a through hole 3 in the center; and a transparent plate 5 made of plastic or glass fixed to the lid 1 with an adhesive 6 so as to close the through hole 3. , tank body 2 upper end 1
9 and the lid 1; a plate 12 disposed inside the main body 2, as can be clearly seen in FIG. including. The packing member 7 is attached with an adhesive across the outer peripheral edge 10 of the back side of the lid 1, and is attached to the upper end 19 of the lid 1 and the main body 2.
11 is a flange fixed to the upper end 19, and the flange 11 is fixed to the upper end 19, and the bolt hole 4 is cut, so that the tightening bolt 9 can appropriately tighten the lid 1 and the packing member 7 via the ring-shaped stopper 8. As shown in FIGS. 4 and 1, the plate 12 has a white surface in the embodiment, and as shown in FIG.
The upper limit line 13 and the lower limit line 14 of the oil level, ie, the oil level indicator line, are displayed in red and form an oil level gauge. The tank body 2 is provided with other members, such as the return pipe 18 shown in FIG. 1 and the suction pipe 21 with the filter 17 shown in FIG. 3.

FIG. 5 is a sectional view corresponding to FIG. 4 showing a second embodiment of the present invention, in which an upper limit line 15 and a lower limit line 16 of the oil level, that is, an oil level indicator line, are displayed on the side plate 22 of the tank body 2. , FIG. 6 shows the upper limit line 15 and the lower limit line viewed from point E in FIG.

Next, in operation, when the suction pipe 21 is connected to the pump suction side (not shown) and the return pipe 18 is connected to the return tank side from the actuator (not shown) to operate the hydraulic system, the tank body 2
The oil level of the hydraulic oil placed inside rises and falls, and as a result, air enters and exits through the sponge-like packing member 7. At this time, the tank inevitably sucks in debris such as chips, dust, and dirt generated in the factory where the tank is installed, but the ventilation area of the packing member 7 of the present invention is comparable to that of a commercially available air breather. It has been found that the packing member of the present invention is extremely useful in removing dirt from the oil in the tank. According to the applicant's experiments, the packing member 7 with sponge particles of 10 μm was used, and the thickness of the packing member 7 was 10 μm.
% of the presser foot, it was possible to obtain a filter effect more than 5 times that of a commercially available air breather. In addition, dirt inside the tank body 2 can be confirmed, and even if there is a sudden drop in the oil level, it can be easily confirmed, so that it is possible to prevent deterioration of the hydraulic oil or take measures against oil leaks quickly.

(Effect of the invention) As explained above, this invention uses an expensive oil level gauge,
Eliminates the need for an air breather, and does not require large costs such as drilling mounting holes, complex sealing of the mounting part, and man-hour costs for securing the joint surface of the tank body and lid with a large number of bolts via packing. To provide an inexpensive and highly reliable simple tank with an extremely simple structure and a transparent plate placed on the lid to easily and sufficiently check the oil level and the oil contamination state. It became a thing.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional elevational view of a simple oil tank according to the first embodiment of the present invention, showing a cross-sectional view taken along the - line in Fig. 2, and Fig. 2 is a bottom view taken along the - line in Fig. 1. The sectional views, FIGS. 3 and 4, are sectional views taken along lines - and -, respectively, in FIG. 1, and FIG. 4 shows only the cross-sectional ring. FIG. 5 is a sectional view corresponding to FIG. 4 of the second embodiment of the present invention, and FIG. 6 is a partial front view showing the oil level indicator line seen from point E in FIG. 1... Lid, 2... Tank body, 3... Through hole,
5... Transparent plate, 7... Sponge-like packing member,
9...Bolt (space member), 12...Plate, 19...
...Top end, 20...Opening, 22...Side plate.

Claims (1)

[Scope of utility model registration request] a tank body having an opening at the upper end; a lid covering the upper end of the body and having a through hole in the center;
a transparent plate attached to the lid so as to close the through hole, and a sponge-like packing member interposed between the upper end and the lid and supported in a moderately compressed state between the two by a spacing member. A simple oil tank, further comprising an oil level indicator line arranged on the inner surface of the side plate of the main body or on a plate arranged inside the main body at a position visible from the through hole.