JPS5924708Y2 - pump pit - Google Patents

Description

[Detailed description of the invention] When discharging oil from the oil storage tank, the more oil can be dispensed by lowering the position of the pump suction as much as possible.

However, in general, the pump cannot be placed very low because leachate flowing into the pump pit mixes with the pump suction and generates an emulsion.

Therefore, the present application provides a shielding plate higher than the frame for forming a waterbed in the pump pit to change the flow of water and prevent water from entering the pump suction.

With this improvement, the pump suction can be lowered to the lower part of the pit, effectively increasing the pumping volume and increasing the cooling effect of the pump motor. It is an idea.

To explain one embodiment now, a shielding plate 3 higher than the frame body 2 is placed at a certain distance inward from the frame body 2 for forming the water bells I to 4 provided around the upper end of the pump pit 1, and is connected to the pump suction. It is provided around 5.

An oil pump 6 is inserted inside the pump suction 5, and a motor 7 of the oil pump 6 protrudes from the lower part of the pump suction 5 and is inserted into the water in the pump pit 1 to be cooled.

In the figure, four shielding plates 3 are used to form a quadrilateral, but the number of shielding plates 3 can be omitted depending on the location of the pump pit.

8 is a drainage pump, 9 is an oil pipe, 10 is a drain pipe, and 11 is a metal fitting for mounting the shielding plate 3.

According to the above-mentioned structure of the present application, if there is no shielding plate 3, the waterbed 4 which is formed by seepage will flow into the pump pit when it becomes higher than the frame 2 due to an increase in groundwater.

There is a risk that the water flowing in at this time will jump over the frame body 2 and flow into the pump suction 5.

In order to prevent this inflow of water, the shielding plate 3 is placed a certain distance inside the frame 2 and higher than the frame 2, so that the water overflowing from the frame 2 hits the shielding plate 3 and descends to the bottom. Water is stored in the lower part of the pump pit 1.

Therefore, since water does not enter the pump suction 5, the pump suction 5 can be lowered to near the boundary line 12 between oil and water, increasing the effective amount of oil delivered and increasing the cooling effect of the pump motor 7. .

In addition, the leachate overflowing from the water bed 4 hits the shielding plate 3 installed in the pit and descends along the wall surface of the pump pit 1, so the oil naturally rises quietly due to the difference in specific gravity, so that the oil-water interface is It should not be disturbed.

In the present application, a shielding plate 3 higher than the frame 2 is provided at a certain distance inward from the frame 2 for forming the water bed 4 provided around the upper end of the pump pit 1 in a diagonal manner, and the shielding plate 3 is higher than the frame 2. A pump suction 5 with an oil pump 6 inserted therein is disposed in the center, and the motor 7 of the oil pump 6 protrudes from the bottom of the pump suction 5 and is inserted into the water in the pump pit 1, so that water does not flow into the pump suction. Since the pump suction can be lowered to near the oil-water interface, the effective amount of oil discharged can be increased, and since the pump motor is fully submerged in the water, the cooling effect can be increased. Since the water overflowing from the bed is lowered by the shielding plate, the oil naturally rises quietly and has the effect of not disturbing the oil-water interface.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the entire water-sealed storage tank, FIG. 2 is an enlarged view of the main part, and FIG. 3 is a plan view of the same. 1... Pump pit, 2... Frame, 3
······Shield.

Claims (1)

[Scope of utility model registration request] Water bed 4 installed around the upper end of pump pit 1
A shield plate 3 higher than the frame body 2 is provided at a certain distance inward from the frame body 2 to form a pump, and a pump suction 5 with an oil pump 6 inserted therein is arranged in the center of the shield plate 3.
Furthermore, the motor 7 of the oil pump 6 protrudes from the lower part of the pump suction 5 and is inserted into the water in the pump pit 1 to form a pump pit.