JPS6189999A - Method of charging oil to closed container - Google Patents

Abstract

PURPOSE:To certainly achieve regulation for quantity of lubricant supplied to a contained by driving an ejector vacuum pump, stopping the operation of said pump after reducing the pressure to vacuum inside and lubricant tank and a closed container connected to it and subsequently applying the atmo spheric pressure to the tank. CONSTITUTION:The oil or liquid to be charged in a closed container 7 connected through a hose 5 to a lubricant tank 1 is previously charged in the lubricant tank1 and the lubricant tank1 and closed container 7 are evacuated by an ejector vacuum pump 3 provided on the lubricant tank 1. Thereby, the air within the closed container 7 is certainly exhausted. Subsequently, when the pump 3 is suspended, the atmosphere is introduced into the lubricant tank 1 and the tank1 is pressurized with the atmosphere. Therefore, the lubrication can be quickly achieved for the closed container 7 by utilizing the atmospheric pressure. Furthermore, because the regulation of the pressure reduction can be effected by the pump 3, the regulation of the lubricant quantity to the container 1 can be certainly and easily achieved.

Description

[Detailed Description of the Invention] Industrial Application Field Honpaku Town is concerned with the method of lubricating sealed containers, and in particular, the method of lubricating a predetermined amount of highly viscous oil or liquid into a container with a small lubricating port and a complicated internal structure. It is suitable for

Conventional technology and its problems Conventionally, when pouring a set amount of highly viscous oil or liquid into a container with a complicated internal structure and a small oil filler port, it is difficult to do so in a way that prevents air bubbles from forming. Lubrication work is performed using a pump or syringe-like device that is pressurized from the oil filler port.

For this reason, it takes great care and time to reliably lubricate the inside parts, and if the container is not completely filled, it is difficult to pour the set amount, and small air bubbles may get mixed in. In view of this, the present invention connects an ejector-type vacuum pump to a sealed lubrication tank, and connects the tank with a closed container to be lubricated in a conductive manner. The inside of the oil tank is brought to a vacuum or near-vacuum pressure by driving an ejector-type vacuum pump, and the pressure inside the oil tank and the sealed container connected to it is also reduced.Then, the pump is stopped and the pressure inside the oil tank is brought to atmospheric pressure. The present invention is characterized in that the amount of oil to be filled is determined by applying atmospheric pressure to the inside of the closed container and adjusting the reduced pressure inside the container.

Example The present invention will be described below based on embodiments shown in the drawings.

In the figure, 1 is a lubricating tank, which has the required internal volume, has a removable lid 2 to facilitate lubricating and pouring liquid into the tank, and can withstand the required depressurization. Make it strong. An ejector-type vacuum pump 3 is provided on the tank 1 or the lid 2 as shown in the figure, and one or more oil supply pipes 4 are provided, one end of which reaches the inner bottom of the tank or near the inner bottom. A hose 5 is connected to the outer end of the skeleton. When the lid 2 equipped with this ejector-type vacuum pump and oil supply pipe is closed on the tank 1, a mechanism is adopted to make the inside of the tank airtight. A connecting fitting 6 is provided at the tip of the hose 5 of a required length to be detachably attached to the oiling lower a of the closed container 7 to be oiled or liquided. If the lubrication lower a of the closed container 7 is of a screw type, the connecting fitting 6 is screwed using this screw. The connecting fitting 6 has a structure that allows it to be easily and quickly attached to and detached from the closed container.

For example, as shown in FIG. 2, there is a connecting pipe 6a with a screw carved into the tip that can be screwed into the lubrication lower a, a shaft 6b formed integrally with this connecting pipe 6a, and an airtight outer periphery of this narrow 6b. It consists of a hose connector 6C that is rotatably fitted and connects the hose 5, and the hose connector 6C and the connecting pipe 6a are connected to each other. This is done by rotating the outer end of the fitting shaft 6b manually or with a tool so as to insert the connecting pipe 6a into the lower a. Further, it is assumed that the hose 5 is fixed to the hose connector 6C. - The embodiment shown in Figure 1 is for a case where a sealed container to be filled with oil is installed outside the oil tank, but the embodiment shown in Figure 4 is also adopted to fill oil into multiple containers at once. can.

This consists of a large number of sealed containers 7.7 inside a large oil tank 11.
...to be stored. At this time, the containers may be stored one by one, but the mount 1 is used, the number of airtight containers is installed on this mount, each mount is stored in the tank, and the ejector type vacuum pump 3
The lid 12 provided with the above is attached as a sealing cover. Of course, at this time, the tank is filled with oil or liquid to be lubricated, and the completely sealed container is immersed in the filled oil.

Function Next, the function of the embodiment shown in FIG. 1 will be explained, but since the embodiment shown in FIG. 4 is lubricated in the same manner,
The explanation will be omitted.

A lubricating tank 1 filled with a required amount of oil to be lubricated, such as a highly viscous oil, is closed and hermetically sealed, and a connecting fitting 6 at the end of a hose is connected to a closed container 7. Next, when high pressure air is supplied to the ejector type vacuum pump 3, the pressure inside the tank is reduced. At this time, the reduced pressure inside the tank is read with a vacuum gauge 8 provided on the lid or a part of the tank. This is because the amount of oil to be poured into the sealed container can be determined in advance by calculating the amount of pressure reduction. The ejector-type vacuum pump also reduces the pressure in the closed container that is connected to the oil tank, and when the pressure is reduced to vacuum or a preset negative pressure close to vacuum,
The air in the tank and container is discharged, and the air bubbles (air) mixed in the highly viscous oil or liquid are also easily defoamed.Then, when the pump is stopped, atmospheric air is introduced into the oil tank. , the inside of the tank is pressurized by the atmosphere.This causes the oil or liquid in the oil tank to flow through the oil filling pipe 4,
A predetermined amount of highly viscous oil or liquid can be supplied and filled into the closed container through the hose 5 quickly and without creating bubbles.

Effects of the Invention According to the present invention, the oil or liquid to be filled in a sealed container is filled in the oil tank, and the internal mechanism is inserted by vacuuming the oil tank and container using an ejector type vacuum pump. The air inside the airtight container, which has a complicated structure, is reliably discharged, and then atmospheric pressure is introduced into the oil tank, so using this atmospheric pressure to lubricate the airtight container is not a tedious process. In addition, even highly viscous liquids and oils can be filled into containers with small lubrication ports without creating air bubbles, and the pressure inside the tank can be easily adjusted using an ejector-type vacuum pump, making it easy to lubricate containers. It has the advantage that the amount can be adjusted reliably and easily.

It is also easy to fill with oil that has a strong odor.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the first embodiment, Fig. 2 is a sectional view of the connecting fitting, Fig. 3 is an example of a sealed container to be lubricated, Fig. 4 is an explanatory drawing of the second practical example, FIG. 5 is an explanatory diagram of the operation of the ejector type vacuum pump. 1 is the oil tank, 2 is the lid, 3 is the ejector type vacuum pump 1
4 is an oil supply pipe, 5 is a hose, 6 is a connecting fitting, 7 is an airtight container, and 7a is an oil supply port. Figure 1 Figure 3

Claims (1)

[Claims] An ejector-type vacuum pump is connected to a sealed oil tank filled with oil or liquid to be lubricated, and a closed container to be lubricated is electrically connected to the tank, and the inside of the lubricant tank is filled with an ejector-type vacuum pump. By driving the pump to create a vacuum or near-vacuum pressure, reducing the pressure inside the oil tank and the sealed container connected to it, and then stopping the pump and applying atmospheric pressure inside the oil tank, a large A method for lubricating a closed container, characterized in that the amount of lubricant is determined by applying oil into the closed container using atmospheric pressure and adjusting the reduced pressure inside the container.