JPS601237B2 - Refueling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil supply device in which only the amount of oil actually supplied is displayed on a flow rate indicator.

Generally, the following means are employed to display the amount of refueling on a flow rate indicator.

In other words, a flow meter is connected to the oil supply piping system that guides the oil pumped from the storage tank to the oil supply nozzle, and the flow rate measured by this flow meter is taken as the number of revolutions of its output shaft, and the number of revolutions is used as the flow rate. The amount of refueling is displayed by transmitting the information to the display meter. By the way, if air is mixed in the oil, the flow meter will measure the amount of air, which will cause an error from the actual amount of oil supplied.

For this reason, an air separator is connected to the oil supply piping system to remove air from the oil liquid. However, for example, if the storage tank is empty and only air flows through the oil supply piping system, or if oil with a large amount of air mixed in due to a seal leak from a pump or the like flows, the air separator cannot fully process the oil. There is a problem that even the amount of air is displayed on the flow rate display meter as the amount of refueling.

The present invention solves the above problem, and when a large amount of air flows through the refueling piping system that cannot be handled by the air separator alone, the connection between the flow meter and the flow rate display meter is severed, so that the actual refueling is performed. To provide an oil supply device in which only the amount of oil that has been supplied is displayed on a flow rate indicator.

An embodiment in which the present invention is applied to a ground-mounted refueling system will be described below with reference to the drawings.

In FIG. 1, a motor 2 and a pump 3 driven by the motor 2 are installed in a main body 1 of the oil supply device.
There is a suction pipe 5A extending from the underground storage tank 4 at the suction port.
is connected. A discharge pipe 5B is connected to the discharge port of the pump 3, and the tip of the discharge pipe 6B is connected to a fuel nozzle 7 via a fuel hose 6 extending outside the main body 1. In addition, a top filter 8 is connected to the discharge pipe 58 from the pump 3 side.
A flow meter 9 is connected, and a float chamber 10, which will be described later, is formed in the flow path on the downstream side of the flow meter 9. and,
A flow rate indicator 11 that displays the amount of refueling in conjunction with the flow meter 9, and an air separator 12 disposed downstream between the filter 8 and the suction pipe 5A are housed in the main body 1. The filter 8 extracts the air in the oil liquid as bubbles together with some oil liquid, and after this foamy oil liquid is completely separated into oil liquid and air in the air separator 12, "only the oil liquid is left". Suction side of pump 3 (
In the embodiment, it is returned to the suction pipe 5A).

The flowmeter 9 is a "roots type flowmeter, etc., which measures the amount of oil flowing in the discharge pipe 6B with an output axis i, which is one component of the output hoe.
The amount of oil measured by this flow meter 9 is displayed on the flow rate indicator blade located above it.

The flow rate display meter 11 also includes one that displays the refueling amount converted into a monetary amount.This mechanism will be explained in detail with reference to FIG. The flow rate is displayed according to the rotation speed of an input shaft 4, which is a component of the flowmeter, and the input shaft 14 is connected to an intermediate shaft 16, which is a component of the output shaft of the flowmeter 9, through a spline 15. Also, the intermediate shaft 16 is connected to the output shaft 13 of the flow meter 9 via the clutch i7.Therefore, when the clutch 17 is engaged, the rotation of the output shaft j3 is inputted via the intermediate shaft blades 6. The oil is transmitted to the shaft blade 41, and the amount of oil supplied according to the rotation speed is displayed on the flow rate indicator 1.When the clutch 17 is disengaged, the input shaft 4 does not rotate at all regardless of the rotation of the output shaft 13. ``The amount of oil supplied is not added to the flow rate display meter 11.''Here, for manufacturing reasons and convenience of explanation, the output shaft of the flow meter 9 was divided into three and each was given a different name. As long as it is a shaft for transmitting the rotation speed of the meter to the flow rate display meter 11, its name, shape, number, etc. do not matter. Next, we will explain the mechanism that detects that a large amount of air has entered the oil and disconnects the clutch turtle 7 to disconnect the flow meter 9 and the flow rate indicator 11. , as shown in detail in FIGS. 2 and 3, the discharge pipe 5B
A spherical float 18 is provided in the float chamber 10 formed in the flow path, and the float 18 moves up and down according to the height of the oil level in the float chamber 10.

The float 18 has a rod 1 that vertically moves through a hole 23a of a case 23 that forms the outer shell of the float chamber 10.
One end of the rod 9 is fixed, and the end of the rod 19 extends outside the float chamber 10 and is pivotally connected to one end of a swing arm 20. This swing arm 20 is rotatable around a pin 21,
The other end is a ring-shaped clutch operating portion 28a that plays around the intermediate shaft 16. At this upper position, the clutch operating portion 20a engages with a flange-shaped actuating plate 22 fixed to the intermediate shaft angle 61. A valve body 24 for closing the hole 23a in the float chamber ID is fixed to the rod 19. With the above configuration, no air is mixed into the oil during refueling, or no air is mixed in. When the amount of oil is small and the air can be completely separated from the oil using only the air separator turtle 2, the float chamber IQ on the downstream side is filled with oil, and the float 18 is at the highest position as shown in Figure 2. is maintained.

In this state, the clutch operating portion 28a of the swing arm 2Q
is lowered, the clutch 17 is engaged, and the amount of refueling corresponding to the rotational speed of the output shaft 13 is added and displayed on the flow rate display meter as described above. Note that at this time, since the hole 23a is closed by the valve body 24, the oil does not leak to the outside from the hole 23a. If the oil is not treated by the air separator 12 and air is still mixed in the oil, the oil level in the float chamber 10 will drop as shown in FIG.

The root 18 is also held in the lower layer. In this state, the clutch operating portion 2Qa of the swinging arm 2Q lifts the intermediate shaft 16 upward, and the clutch 17 is disengaged. are not added and displayed. In this way, the flow rate indicator 11 displays only the amount of oil actually supplied. In the embodiments described above, the clutch 17 and the float 18 were mechanically moved.
7 is an electromagnetic clutch, and the switch of this electromagnetic clutch is turned on by the vertical movement of 8. They may be electrically interlocked, such as an OFF operation. Again, instead of directly mechanically transmitting the rotational speed of the output shaft 13 of the flow meter 9 to the flow rate indicator 11, for example, a disk having a slit is fixed to the center 16, and phototubes are arranged on the upper and lower surfaces of the slit. A pulse oscillator is installed to take out the rotational speed of the output shaft 13 as a pulse signal, and based on this pulse signal, the amount of oil supplied is displayed on a flow rate indicator. You can. Of course, the present invention can also be applied to a so-called suspension type oil supply device. Further, in order to ensure the connection of the clutch 17, the intermediate shaft 16 may be biased downward by a spring having a spring force that does not impede the vertical movement of the float 18. Furthermore, the float chamber may be formed in the flow path of the discharge pipe 5B between the pump 3 and the flow meter 9, for example in the filter 8 as shown in FIG. In addition, 25 in FIG. 4 is a filter element, and the filter element 25 is used to turn the air mixed into the oil into a foam as described above and take it out, and this filter element 8 itself is well known in the past. Further detailed explanation will be omitted. As described above, the present invention provides a clutch at the output of the flow meter for transmitting the rotational speed to the flow rate display meter, and when air is mixed in the oil to be supplied, the clutch is disengaged. Since the new oil supply amount is not added to the flow rate display meter, only the amount of oil actually supplied is displayed on the flow rate display meter, allowing accurate oil volume management. This also eliminates customer distrust caused by errors in refueling amount.

Further, as a means for detecting that air is mixed in and operating the clutch, simply forming a float chamber in the middle of the refueling pipe system and providing a float within the float chamber,
The structure is simple as it is only necessary to interlock the float and the clutch.

Furthermore, if the amount of oil is not added to the flow rate indicator despite the refueling operation, there may be a problem such as the storage tank being empty or a seal leaking in the piping, causing a large amount of air to get mixed in with the oil liquid. It is possible to know that there is an abnormality and quickly take countermeasures against this abnormality.

Furthermore, the present invention has various advantages such as being able to be applied without significantly changing the specifications of conventional oil supply devices.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of the case where the present invention is applied to a ground-mounted refueling system, and FIG.
FIG. 3 is an enlarged partial sectional view of the main part when the clutch is disengaged at the same part as in FIG. 2, and FIG. 4 is a sectional view of the main part showing another embodiment of the present invention. 3...Pump, 5B...Discharge pipe (lubrication piping system), 6...
...・Refueling hose (refueling piping system), 9...Flowmeter, 1
0...Float chamber, 11...Flow rate indicator,
13... Output axis (output wisteria) 14... Input axis (
Output shaft) 16...Intermediate shaft (output shaft) 17...Clutch, 18...Float. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 A pump for pumping up the oil liquid in the storage tank,
An oil supply piping system that guides the oil pumped up by the pump to the oil supply nozzle, a flowmeter connected to the oil supply piping system and measuring the amount of oil flowing within the oil supply piping system, and an output shaft of the flowmeter. In the oil supply device equipped with a flow rate indicator connected to the oil supply system, a clutch is provided in the middle of the output shaft, a float chamber is formed in the middle of the flow path of the oil supply piping system, and a flow rate indicator is provided in the float chamber according to the oil level. 1. A refueling device characterized in that a flow that moves up and down is provided, the float and the clutch are interlocked, and the clutch is disengaged when the float reaches a predetermined height position or less.