CN221897119U - An isolated axial end face sealing device - Google Patents

Abstract

The utility model discloses an isolated axial end face sealing device, which comprises: a spacer ring and a reflow hole. The isolating ring is fixed with the end face of the rotating machine shell without clearance, the isolating ring can isolate the rotating shaft from the sealed medium lubricating oil, and the reflux hole is designed at the lower part of the isolating ring and is used for enabling the lubricating oil flowing into the isolating ring to flow into the rotating machine equipment shell along the reflux hole. The utility model can effectively prevent the lubricating oil in the rotating machine equipment from leaking at the axial end face, can run for a long time and reduces the operation cost of the rotating machine equipment.

Description

An isolated axial end face sealing device

Technical Field

The utility model relates to the technical field of transfer equipment sealing, in particular to an isolated axial end face sealing device.

Background Art

At present, the viscosity of lubricating oil in many rotating equipment is relatively high, especially in gear rotating equipment. In order to prevent the axial leakage of lubricating oil, a leak-proof sealing device must be installed at the corresponding position of the shell. Generally, it is sealed with felt or rubber oil seals and other sealing bodies. Some equipment is equipped with dynamic and static ring labyrinth sealing structures on this basis to cooperate with the leakage of sealing lubricating oil. Its structure is to install dynamic and static ring labyrinth seals inside the rotating shell, and install a sealing body seal at the end face of the shell. The internal cooperation between the dynamic ring and the static ring is used to block the leakage of lubricating oil, and the seal at the end face of the shell is sealed by the pressing force of the sealing body on the rotating shaft. This kind of structure is effective when the viscosity of the lubricating oil is not high, but when the viscosity of the lubricating oil is relatively high, In addition, when the rotating shaft of the rotating equipment is at an inclination angle to the horizontal plane, especially in winter, the flow performance of the lubricating oil is reduced in a low temperature environment, and the effect is not particularly good. First, when the viscosity of the lubricating oil is relatively high, part of the lubricating oil falls on the static ring of the labyrinth seal. Since the static ring and the dynamic ring are limited by the installation space, the length of the static ring cannot fully meet the on-site use requirements. These lubricating oils will accumulate more and more above the static ring, and then fall into the rotating shaft of the rotating equipment along the gap between the dynamic and static rings. Some of the lubricating oil adheres to the surface of the dynamic ring and drips onto the rotating shaft. Finally, it flows along the rotating shaft of the rotating equipment to the gap caused by the wear of the seal body and the sealing surface and leaks out. At the same time, external debris will also enter the rotating equipment through the gap, causing pollution.

This type of structure cannot operate continuously for a long time and will leak after running for a period of time. Every time a leak occurs, a new seal must be replaced. Each time a replacement is made, all the seals must be removed and then replaced with new ones, which is time-consuming and labor-intensive, and increases the operating cost of the transfer equipment. At the same time, the leaked lubricating oil not only affects the appearance of the environment, but the leakage of the lubricating oil will also cause underground and air pollution.

Therefore, a sealing device without leakage and capable of long-term continuous operation has become an urgent problem to be solved.

Utility Model Content

The technical problem to be solved by the utility model is to provide an isolated axial end face sealing device with excellent non-leakage performance and low cost.

In order to solve the above technical problems, the technical solution provided by the utility model is: an isolated axial end face sealing device, including: an isolation ring, a return hole, the isolation ring is fixed to the end face of the rotor housing without a gap, the isolation ring can isolate the rotating shaft from the sealed medium lubricating oil, and the return hole is designed at the lower part of the isolation ring, which is used to flow the lubricating oil flowing into the isolation ring into the rotor equipment housing along the return hole.

Compared with the prior art, the utility model has the advantages that: the utility model can effectively prevent the leakage of lubricating oil in the transfer equipment at the axial end surface, can operate for a long time, and reduce the operating cost of the transfer equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an isolated axial end face sealing device of the utility model.

As shown in the figure: 1. Isolation ring, 2. Return hole, 3. Shell, 4. Original static ring, 5. Original dynamic ring, 6. Sealing surface, 7. Rotating shaft.

DETAILED DESCRIPTION

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inside", "outside", "vertical", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The following is a further detailed description of an isolated axial end face sealing device of the utility model in conjunction with the accompanying drawings.

In conjunction with Figure 1, the specific implementation process of the utility model of an isolated axial end face sealing device is as follows:

An isolated axial end face sealing device comprises: an isolation ring 1, a return hole 2;

The isolating ring (1) is fixed to the end surface of the rotating machine housing (3) without any gap. The isolating ring (1) can isolate the rotating shaft (7) from the sealed medium lubricating oil. The return hole (2) is designed at the lower part of the isolating ring (1) to allow the lubricating oil flowing into the isolating ring (1) to flow into the rotating machine housing (3) along the return hole (2).

When the viscosity of the lubricating oil is relatively high, when the lubricating oil falls onto the original static ring (4) of the labyrinth seal, the high-viscosity lubricating oil will accumulate more and more on the original static ring (4), and then fall along the gap between the original dynamic ring (5) and the original static ring (4) onto the isolation ring (1) on the rotating shaft (7) of the rotating equipment. The lubricating oil blocked by the isolation ring (1) falls along the isolation ring (1) into the rotating equipment housing (3), thereby isolating the lubricating oil that originally fell onto the rotating shaft, so that it flows along the outer surface of the isolation ring (1) to the bottom of the housing (3) and cannot leak out. Even if a small amount of oil mist flows into the isolation ring (1), it will flow to the bottom of the housing (3) along the reflux hole (2) under the action of gravity and cannot leak out, thereby achieving a sealing effect.

The utility model can effectively prevent the leakage of lubricating oil in the transfer equipment at the axial end surface, can operate for a long time, and reduces the operation cost of the transfer equipment.

The appearance and size of the utility model can be adjusted accordingly according to the actual situation of the on-site transfer equipment, but the principle remains unchanged.

The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims (2)

1. An isolated axial end face sealing device, characterized in that it comprises an isolation ring (1) and a return hole (2); The isolating ring (1) is fixed to the end surface of the rotating machine housing (3) without any gap, and the isolating ring (1) can isolate the rotating shaft (7) from the sealed medium. 2. An isolated axial end face sealing device according to claim 1, characterized in that the return hole (2) is designed at the lower part of the isolation ring (1).