CN205090040U

CN205090040U - Automatic breather plug

Info

Publication number: CN205090040U
Application number: CN201520888439.2U
Authority: CN
Inventors: 蔡东; 谭家明; 汤伟
Original assignee: Changzhou Guomao Lide Transmission Equipment Co Ltd
Current assignee: Changzhou Guomao reducer Limited by Share Ltd.; Jiangsu Guomao Reducer Group Co ltd
Priority date: 2015-11-10
Filing date: 2015-11-10
Publication date: 2016-03-16
Anticipated expiration: 2025-11-10

Abstract

The utility model relates to an automatic breather plug, including the ascending valve body of opening, valve body top card has a housing, there is the space in the circumferential connecting line department of housing and valve body, and is inside from last to installing compression balancing spring, valve and memory spring down respectively at the valve body, and the inside cavity diameter of valve body is from last to diminishing down gradually, and the up -and -down motion is made along with the flexible of spring along the valve body inner wall to the valve, and the valve body inner wall that the valve was located during spring balanced state is the infundibulate, valve body outer lane lower part cover has the sealing washer, the sealing washer is corresponding with infundibulate department inner wall position. Make the breather plug by the spring adjustment, carry out opening with closed of self according to the influence of external environment temperature, pressure through special memory alloy material to play the effect of protection speed reducer betterly.

Description

A kind of breather plug automatically

Technical field

The utility model relates to a kind of breather plug automatically, is specifically related to a kind ofly adopt memory alloy spring and for the breather plug of reducing motor.

Background technique

During retarder work, in casing, temperature raises, gas expansion, pressure increase.For making the air of expanded by heating in case can freely discharge with the pressure balance of guard box inside and outside, do not cause lubricant oil along flask joint and the shaft extension section of going out or other gap leakages, usually at casing top installing breather.

Usually, reducing motor is all dispatched from the factory after having added lubricant oil, and in storage and transport process, breather plug needs closed, in case leak-stopping is oily; 2., during reducing motor work, need to guarantee that plug breather plug is unimpeded, to maintain pressure balance, reduce heating and leakage of oil; 3., in some particular job occasion, need the function of automatic opening-closing.As reducing motor interrupter duty in the environment of high humidity or dust, automatic opening-closing breather plug can greatly reduce harmful substance and invade.Therefore need a kind of can the breather plug of automatic double-control, guarantee to coordinate speed reducer each working state opening and closed.Clapyron Equation according to describing expanding gas rule: PV=nRT, wherein P represents pressure, and V represents volume, n and R represents constant, and T represents temperature, can draw from this equation: n and R is constant, remain unchanged, when T temperature rises, and reducing motor box volume V is constant, so pressure P also increases, and the lifting surface area S of valve is constant, so P*S is pressure, pressure also increases, and the pressed gas that reducing motor box house is higher will promote valve.

Summary of the invention

The purpose of this utility model is to provide a kind of breather plug automatically, by utilizing memory alloy temperature to control as master, Stress control are auxiliary Special controlling mode, guarantees speed reducer opening with closed in each state.

For achieving the above object, the utility model provides a kind of breather plug automatically, comprise the valve body of opening upwards, described body top card has a case, there is space in the circumferential joint of described case and valve body, be separately installed with compression balance spring, valve and memory spring from top to bottom at valve inner, valve inner cavity diameter diminishes from top to bottom gradually, valve moves up and down along valve interior wall with the flexible of spring, and during spring balancing state, the valve interior wall at valve place is funnel shape; Bottom, valve body outer ring cover has seal ring, and described seal ring is corresponding with funnel shape place inner wall position.Enable breather plug according to the impact of ambient temperature, pressure by special memory alloy material, regulated by spring, carry out opening with closed of self, thus play the effect of protection speed reducer preferably.

Further improvement of the utility model is: described encloser inner wall is circumferentially with several cuttings, and outer wall corresponding to valve body is provided with suitable draw-in groove, and rapid and convenient formula is inserted, and is conducive to the circulation of air.

Further improvement of the utility model is: the outer ring at described valve body valve place when spring balancing state is provided with the protector that Open Side Down, and described seal ring is embedded in described protector, is effectively stuck in groove by seal ring, and when preventing from installing, seal ring is subjected to displacement.

The beneficial effects of the utility model are: the breather plug melted again after being heated by simple sealing wax more on the market, the utility model structure is more exquisite, applied widely, can effectively from main control, it be opened and closed, can farthest prevent the pollutants such as dust from entering speed reducer, extend service life of a machine, with low cost.

Accompanying drawing explanation

Fig. 1 represents the closed state plan view of the present embodiment;

Fig. 2 represents the open mode plan view of the present embodiment;

Drawing reference numeral: 1-memory spring, 2-seal ring, 3-compress balance spring, 4-valve body, 5-case, 6-valve, 7-cutting, 8-protector.

Embodiment

In order to deepen, to understanding of the present utility model, to be described in further detail the utility model below in conjunction with drawings and Examples.

By reference to the accompanying drawings 1 with accompanying drawing 2, the utility model proposes a kind of breather plug automatically, comprise the valve body 4 of opening upwards, described valve body 4 top card has a case 5, space is there is in described case 5 with the circumferential joint of valve body 4, compression balance spring 3, valve 6 and memory spring 1 is separately installed with from top to bottom in valve body 4 inside, valve body 4 interior cavity diameters diminishes from top to bottom gradually, valve 6 moves up and down along valve body 4 inwall with the flexible of spring, and during spring balancing state, the valve interior wall at valve 6 place is funnel shape; Bottom, valve body 4 outer ring cover has seal ring 2, and described seal ring 2 is corresponding with funnel shape place inner wall position, and the outer ring at described valve body 4 valve 6 place when spring balancing state is provided with the protector 8 that Open Side Down, and described seal ring 2 is embedded in described protector 8.Described case 5 inwall is circumferentially with four cuttings 7, and the outer wall of valve body 4 correspondence is provided with suitable draw-in groove.

When reducing motor works, can generate heat, temperature just rises, once temperature reaches the temperature 40 DEG C (temperature of ventilating is set within 40 DEG C) of setting herein in reducing motor casing, memory spring 1 will enter working state automatically, namely upwards extends, promote valve 6, promote compression balance spring 3 again, until new equilibrium position, now valve 6 and valve body 4 have had gap, thus generation exhaust passage, reach the object of automatically ventilation, and valve body 4 and case 5 remain and maintain static, and combine.

After reducing motor quits work, when temperature is reduced to setting temperature less than 40 DEG C (temperature of herein ventilating is set within 40 DEG C), memory spring 1 is retracted into minimum dimension state downwards, compression balance spring 3 just promotes valve 6 automatically downwards, now 6 valves and valve body 4 are without gap, so closedown exhaust passage, can effectively prevent harmful matter from invading.

Whole device utilizes the characteristic of memory alloy, makes the breather plug of speed reducer have the function of automatic open-close, no matter be all substantially reduce cost in assembling, transport or using process, and long service life.

The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure transformation utilizing the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. an automatic breather plug, comprise the valve body (4) of opening upwards, it is characterized in that: described valve body (4) top card has a case (5), space is there is in described case (5) with the circumferential joint of valve body (4), compression balance spring (3), valve (6) and memory spring (1) is separately installed with from top to bottom in valve body (4) inside, valve body (4) interior cavity diameters diminishes from top to bottom gradually, valve (6) moves up and down along valve body (4) inwall with the flexible of spring, and during spring balancing state, the valve interior wall at valve (6) place is funnel shape; Valve body (4) bottom, outer ring cover has seal ring (2), and described seal ring (2) is corresponding with funnel shape place inner wall position.

2. the automatic breather plug of one according to claim 1, is characterized in that: described case (5) inwall is circumferentially with several cuttings (7), and the outer wall of valve body (4) correspondence is provided with suitable draw-in groove.

3. the automatic breather plug of one according to claim 1, is characterized in that: the outer ring at described valve body (4) valve (6) place when spring balancing state is provided with the protector (8) that Open Side Down, and described seal ring (2) is embedded in described protector (8).