CN202732903U

CN202732903U - Leak-proof device of air filter

Info

Publication number: CN202732903U
Application number: CN 201220348054
Authority: CN
Inventors: 杜妮; 许春忠; 王兴洋; 范钦增
Original assignee: HANGZHOU WANJIE SPEED REDUCER CO Ltd
Current assignee: HANGZHOU WANJIE SPEED REDUCER CO Ltd
Priority date: 2012-07-18
Filing date: 2012-07-18
Publication date: 2013-02-13
Anticipated expiration: 2022-07-18

Abstract

The utility model provides a leak-proof device of an air filter. The leak-proof device of the air filter comprises an air filter, a box body and an air filter seat. The air filter is fixed with the box body through the air filter seat. The bottom end of the air filter seat is inserted into an installation hole of the box body and the upper end of the air filter seat is fixed on the box body through a bolt. A blind hole is axially arranged on the air filter seat. Inner threads are arranged on the upper end of the blind hole and matched with installation threads of the air filter. A vent is arranged on the lateral wall, opposite to an oil entering direction, of the blind hole so that the bottom, stretching into the box body, of the air filter seat forms a boss. The leak-proof device of the air filter has the advantages of not only not affecting functions of the air filter, but also effectively avoiding oil leaking.

Description

The air filter leakage preventer

Technical field

The utility model relates to a kind of air filter leakage preventer.

Background technique

Air filter is annex commonly used on the gear-box, usually adopt the screw thread (see figure 1) that links to each other with casing, gear-box is in work, the gear of High Rotation Speed can continuously get rid of lubricant oil in the air filter, under the effect of casing internal pressure, fluid can produce leakage, causes and wastes and befouling environment.

Summary of the invention

The problem of oil leak the utility model proposes a kind of function that neither affects air filter when working in order to solve gear-box, can effectively avoid again the air filter leakage preventer of oil liquid leakage.

Air filter leakage preventer described in the utility model, comprise air filter, casing, air filter seat, it is characterized in that: described air filter is fixed by air filter seat and described casing, the casing mounting hole is inserted in the bottom of described air filter seat, and the upper end is bolted on the described casing; Described air filter seat axially have a blind hole, the upper end of described blind hole arranges the internal thread with the installation screw thread coupling of air filter; The sidewall that comes dorsad oily direction of described blind hole is opened pore, so that the bottom of stretching in the casing of described air filter seat forms boss.

Described blind hole communicates with described vent.

When high-speed gear rotated, gear can get rid of the fluid in the casing to boss, can't enter blind hole because fluid is stopped by the sidewall of air filter and boss, thereby prevent that fluid from entering air filter.

The beneficial effects of the utility model are: neither affect the function of air filter, can effectively avoid oil liquid leakage again.

Description of drawings

Fig. 1 is traditional air filter and the installation diagram of casing (wherein, the direction of arrow is the moving direction of the fluid that throws away through gear).

Fig. 2 is the structural drawing of the utility model air filter seat.

Fig. 3 be installation diagram of the present utility model wherein, the direction of arrow is the moving direction of the fluid that throws away through gear).

Embodiment

Further specify the utility model below in conjunction with accompanying drawing

With reference to accompanying drawing:

Air filter leakage preventer described in the utility model, comprise air filter 1, casing 2, air filter seat 3, described air filter 1 is fixed by air filter seat 3 and described casing 2, casing 2 mounting holes are inserted in the bottom of described air filter seat 3, and the upper end is fixed on the described casing 2 by bolt 31; Described air filter seat 3 axially have a blind hole 32, the upper end of described blind hole 32 arranges the internal thread 321 with the installation screw thread coupling of air filter; The sidewall that comes dorsad oily direction of described blind hole 32 is opened pore 322, so that the bottom of stretching in the casing 2 of described air filter seat 3 forms boss 33.

Described blind hole 32 communicates with described vent 322.

When high-speed gear rotated, gear can get rid of the fluid in the casing to boss 33, can't enter blind hole 32 because fluid is stopped by the sidewall of air filter 1 and boss 33, thereby prevent that fluid from entering air filter 1.

The described content of this specification embodiment only is enumerating the way of realization of model utility design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reaches the equivalent technologies means that design can be expected according to the utility model in those skilled in the art.

Claims

1. air filter leakage preventer, comprise air filter, casing, air filter seat, it is characterized in that: described air filter is fixed by air filter seat and described casing, the casing mounting hole is inserted in the bottom of described air filter seat, and the upper end is bolted on the described casing; Described air filter seat axially have a blind hole, the upper end of described blind hole arranges the internal thread with the installation screw thread coupling of air filter; The sidewall that comes dorsad oily direction of described blind hole is opened pore, so that the bottom of stretching in the casing of described air filter seat forms boss.

2. air filter leakage preventer as claimed in claim 1, it is characterized in that: described blind hole communicates with described vent.