CN205859115U

CN205859115U - Ventilating plug

Info

Publication number: CN205859115U
Application number: CN201620732371.3U
Authority: CN
Inventors: 费续东; 高洪福; 成春明; 王志强
Original assignee: Taizhong Coal Mining Machinery Co Ltd
Current assignee: Taizhong Coal Mining Machinery Co Ltd
Priority date: 2016-07-13
Filing date: 2016-07-13
Publication date: 2017-01-04
Anticipated expiration: 2026-07-13

Abstract

This utility model belongs to mine coal cutter rocking arm or the row of mine decelerator, the technical field of getter device, is specifically related to a kind of ventilating plug.This utility model is in order to solve the long-time leakage of oil of existing porous plug existence, leakage of oil amount problem greatly or in impurity access arrangement cavity, and then provide a kind of ventilating plug, including ventilative cock body and joint, it is provided with cover in porous plug body, it is provided with double-layer filtering net in described porous plug body, being provided with two groups of check valves in opposite direction in described joint, the termination of joint is provided with screw plug.This utility model, by porous plug is designed double-layer filtering net, increases the check valve of a set of mutual correspondence simultaneously, efficiently solves that rocking arm porous plug leakage of oil amount is big, the problems such as impurity is easily accessible in equipment cavity body under leakage of oil time length, adverse circumstances.

Description

Ventilating plug

Technical field

This utility model belongs to mine coal cutter rocking arm or the row of mine decelerator, the technical field of getter device, tool Body relates to a kind of ventilating plug.

Background technology

The porous plug installed on the equipment such as rocker arm of coal mining machine or mine decelerator now easily produces length when row, air-breathing , there is partial impurities meeting access arrangement cavity simultaneously and cause the situation of device damage in time leakage of oil, the problem that leakage of oil amount is big.Mesh Front porous plug does not the most obtain efficient solution in the long-time leakage of oil of solution, leakage of oil amount problem greatly or in impurity access arrangement cavity Certainly.

Summary of the invention

Long-time leakage of oil that this utility model exists to solve existing porous plug, leakage of oil amount be big or impurity access arrangement chamber Internal problem, and then provide a kind of ventilating plug.

This utility model adopts the following technical scheme that

A kind of ventilating plug, including ventilative cock body and joint, is provided with cover, is provided with in described porous plug body in porous plug body Double-layer filtering net, is provided with two groups of check valves in opposite direction in described joint, the termination of joint is provided with screw plug.

Described check valve is connected by steel ball and spring and forms, and the spring fixed end of two groups of check valves is towards on the contrary.

Described double-layer filtering net includes filter screen and net, and filter screen is spongy being filled in cover, and net is lamellar, is located at and joint Through tapping.

Compared with existing porous plug, this porous plug not only devises double-layer filtering net, carries out fluid and air plankton Twice filtration, in can effectively preventing impurity access arrangement cavity；Have also been devised the check valve of a set of mutual correspondence simultaneously, strengthen Oil and the centrifugation of air mixture to equipment inside cavity, while air is normally discharged, slow down oil leakage phenomenon, Improve the service efficiency of porous plug.Simultaneously compared with the structure of existing porous plug, do not strengthen production cost, have higher Promotional value.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

In figure: 1-breathe freely cock body, 2-cover, 3-filter screen, 4-packing ring, 5-net, 6-packing ring, 7-joint, 8-steel ball, 9-spring, 10-screw plug.

Detailed description of the invention

In conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:

Ventilating plug as shown in Figure 1, including ventilative cock body 1 and joint 7, is provided with cover 2 in ventilative cock body 1, described Being provided with double-layer filtering net in vent plug body 1, be provided with two groups of check valves in opposite direction in described joint 7, the termination of joint 7 is provided with Screw plug 10.

Described check valve is connected by steel ball 8 and spring 9 and forms, and the fixing end of spring 9 of two groups of check valves is towards on the contrary.

Described double-layer filtering net includes filter screen 3 and net 5, and in filter screen 3 completely covers 2 in spongy filling, net 5 is lamellar, is located at The tapping through with joint 7.

After equipment normally works a period of time, owing in equipment cavity body, oil temperature raises and pressure increases, porous plug both sides To therefore form pressure differential.Now the forward check valve (one group of check valve above in diagram) of porous plug is opened, high temperature Oil gas passes through screw plug, check valve, more final only by gas exhaust valve external body to the filtration of oil gas through net, filter screen；This Time also begin to be gradually lowered due to the discharge of gas, pressure and oil temperature in cavity, when in equipment cavity body drop of pressure to certain When degree, the i.e. external pressure of porous plug installation place are more than internal pressure, in cavity, become negative pressure, forward closed check valve, instead Opening to check valve, the cooling oil in porous plug body flows back to fuel tank, outside cooling gas after drainage screen, net filtration, Carrying out automatic compensation by reverse check valve, screw plug, when pressure and outside pressure balance in equipment cavity body, reverse check valve closes Close.

This utility model by the ventilative consent of the equipment such as rocker arm of coal mining machine or mine decelerator is designed, technique Transformation, improves service life, solves that rocking arm porous plug leakage of oil amount is big, impurity is easily accessible under leakage of oil time length, adverse circumstances The problems such as equipment cavity body is interior.

Claims

1. a ventilating plug, including ventilative cock body (1) and joint (7), is provided with cover (2) in ventilative cock body (1), and its feature exists In: it is provided with double-layer filtering net in described ventilative cock body (1), two groups of check valves in opposite direction is installed in described joint (7), connects The termination of head (7) is provided with screw plug (10).

Ventilating plug the most according to claim 1, it is characterised in that: described check valve is by steel ball (8) and spring (9) Connecting composition, the fixing end of the spring (9) of two groups of check valves is towards on the contrary.

Ventilating plug the most according to claim 2, it is characterised in that: described double-layer filtering net includes filter screen (3) and net (5), filter screen (3) is filled in cover (2) in spongy, and net (5) is lamellar, is located at the tapping through with joint (7).