Sealing device of fan bearing seat

Abstract

The invention discloses a sealing device of a fan bearing seat. The sealing device comprises a main shaft, wherein the main shaft is equipped with a bearing seat, a bearing, a bearing seat end cover and a gland in sequence; a felt is arranged on the bearing seat end cover; a first space is reversed between the bearing and the bearing seat end cover; an oil retainer and an oil catcher are arranged in the first space; the inner hole of the oil retainer is provided with a conical degree; a second space is reversed between the oil retainer and the oil catcher; and the first space is communicated with the second space. According to the invention, the whole space of the sealing device of the fan bearing seat is of a labyrinth shape; a great quantity of liquid oil threw out by the bearing can firstly be caught by the oil catcher, a small quantity of liquid oil flows past from the second space, however, the oil retainer can play the damping effect on the liquid oil and the felt can play the third sealing effect, so the sealing effect is greatly improved, the phenomenon of oil leakage of the fan bearing seat is avoided, the production cost is saved and the production efficiency is improved.

Description

technical field [0001] The invention relates to a sealing device, in particular to a sealing device for a fan bearing seat. Background technique [0002] The existing fan bearing seat sealing device uses felt to achieve the sealing effect, as shown in the attached figure 1 As shown, a main shaft 1 is included, and a bearing seat 2, a bearing 3, a bearing seat end cover 4 and a gland 5 are sequentially installed on the main shaft 1, and a felt 6 is arranged on the bearing seat end cover 4. However, in use, it was found that the sealing effect of the fan bearing seat sealing device was poor, and oil leakage often occurred in the fan bearing seat, which not only caused a lot of waste of lubricating oil, but also often caused shutdowns, which affected production efficiency. The reasons were analyzed, mainly It is the following two points: 1. The external dust enters the felt, which hardens the felt, which causes the sealing gap to become larger; 2. The high-speed rotation of th...

AI Technical Summary

Problems solved by technology

However, in use, it was found that the sealing effect of the fan bearing seat sealing device was poor, and oil leakage often occurred in the fan bearing seat, which not only caused a lot of waste of lubricating oil, but also often caused shutdowns, which affected production efficiency. The reasons were analyzed, mainly The following two points: 1. The external dust enters the felt, which hardens the felt, which causes the sealing gap to become larger; 2. The high-speed rotation of the main shaft causes serious wear of the main shaft and the components on the main shaft, resulting in damage to the felt

Therefore, a single fan bearing housing sealing device that uses felt to achieve the sealing effect can no longer meet the production needs.

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