KR20210025828A - Oil loop to prevent oil leakage in pump bearings - Google Patents

Abstract

According to an embodiment of the present invention, a method of solution is application of an oil loop. Bearing oil is continuously supplied to a bushing to generate oil leakage through a gap between the bushing and a shaft due to an oil discharge phenomenon of a bearing and a bearing oil supply device such as a plunger and an oil ring. To solve the problem, the oil loop is installed inside a bearing cover to prevent the oil from being directly supplied to the shaft by the loop even though the oil is supplied to the bushing, thereby preventing the oil from leaking through the gap between the bushing and the shaft.

Description

Oil loop to prevent oil leakage in pump bearings {OIL LOOP TO PREVENT OIL LEAKAGE IN PUMP BEARINGS}

The present invention relates to a device for preventing oil leakage occurring in a bearing of a centrifugal pump, and more particularly, an oil loop is installed between the bearing and the shaft, that is, inside the bearing cover, so that even if oil is supplied to the bushing side, the oil The present invention relates to an oil loop for preventing oil leakage of bearings for improving oil leakage through a gap between a bushing and a shaft by not being directly supplied to the shaft.

In general, oil leakage of bearing oil is caused by various causes such as bearing type, type of oil, lubricating device, lubrication structure, operating conditions, etc., depending on the type of pump, fogging around the bearing housing, pooling and flow of oil, etc. It is found in various phenomena.

When the bearing oil leaks, the following problems occur.

Pressure increase in the bearing housing due to the increase of the first bearing and oil temperature

Increased oil flow due to the decrease in the viscosity of the second oil

Excessive amount of oil scattered by bearing lubricating devices such as the 3rd flinger and oil ring

MISTization of oil by the 4th oil injection device

Oil discharge phenomenon due to high oil level setting of the 5th ball bearing

The rotation of the oil due to the rotational motion of the 6th bearing

Generation of vacuum pressure around the bushing by the 7th bearing housing cooling fan

Utility Model Registration Publication No. 1995-0001726 Korean Patent Publication No. 2019-0092728

Accordingly, the present invention has been proposed in consideration of the above matters, and in the present invention, since the cause of the bearing oil leakage phenomenon is various, it is not easy to find the root cause when the leakage phenomenon occurs, so that the actual oil leakage is The purpose of this is to improve the leakage phenomenon by changing the design to a structure in which leakage is unlikely to occur on the gap between the bearing cover bushing and the shaft.

The solution according to embodiments of the present invention is the application of an oil loop. Bearing oil is continuously supplied to the bushing side due to bearing oil supply devices such as flinger and oil ring, and oil discharge from the bearing, so that oil leakage may occur through the gap between the bushing and the shaft. To improve this, an oil loop is installed inside the bearing cover so that even if oil is supplied to the bushing, the oil is not directly supplied to the shaft by the loop, thereby improving the phenomenon of oil leakage into the gap between the bushing and the shaft.

The effect of the invention according to the present invention is to improve the phenomenon that oil leaks into the gap between the bushing and the shaft by installing an oil loop inside the bearing cover so that even if oil is supplied to the bushing, the oil is not directly supplied to the shaft by the loop. .

1 is a cross-sectional view of a portion of an inner shape of a ball bearing housing to which a bearing oil leakage prevention loop according to an embodiment of the present invention is not applied.
2 is a cross-sectional view of a part of an inner shape of a ball bearing housing to which a bearing oil leakage prevention loop is applied according to an embodiment of the present invention.

Before describing the embodiments according to the present invention in detail, the present invention is not limited to the configuration shown in the following detailed description or the accompanying drawings, and may be used or performed in various ways.

In addition, it should be understood that the expressions or terms used herein are for the purpose of description only and should not be regarded as limiting.

That is, as used herein, expressions such as "mounted", "installed", "connected", "connected", "supported", "coupled" are not intended to indicate or limit anything else. It is used in a wide range of expressions including both direct and indirect mounting, installation, connection, connection, support, and coupling. The expressions "connected", "connected", and "coupled" are not limited to physical or mechanical connections, connections, or combinations.

And in this specification, terms indicating directions such as top, bottom, downward, upward, rear, bottom, front, rear, etc. are used to describe the drawings, but these terms are used in directions relative to the drawings for convenience (normally viewed Time). Terms indicating this direction should not be taken as literally limiting or limiting the present invention in any form.

In addition, terms such as "first", "second", and "third" used in the present specification are for illustrative purposes only and should not be considered to mean relative importance.

Hereinafter, an embodiment of the present invention will be described in detail.

In the present invention, bearing oil is continuously supplied to the bushing side due to a bearing oil supply device such as a flinger and an oil ring, and an oil discharge phenomenon of the bearing, so that oil leakage may occur through a gap between the bushing and the shaft.

To improve this, an oil loop is installed inside the bearing cover so that even if oil is supplied to the bushing side, the oil is not directly supplied to the shaft by the loop, thereby improving the phenomenon that oil leaks into the gap between the bushing and the shaft.

Although the preferred embodiment of the present invention has been described above, the present invention can use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Therefore, the above description does not limit the scope of the present invention determined by the limits of the following claims.

Claims (1)

In the bearing housing of the pump, it is attached to the inside of the bearing cover and installed to surround the outer surface of the shaft,
Oil loop to prevent oil leakage in bearings to prevent oil from leaking into the gap between the bushing and the shaft by preventing oil from directly contacting the shaft even if oil leaks to the bushing side.

Images