CN2381859Y

CN2381859Y - Dustproof safety cover for three purpose valve

Info

Publication number: CN2381859Y
Application number: CN 99214183
Authority: CN
Inventors: 岳国庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-11
Filing date: 1999-06-11
Publication date: 2000-06-07
Anticipated expiration: 2009-06-11

Abstract

The utility model relates to a dustproof safety cover for a three-purpose valve. The utility model solves the problems that because of the pollution of underground coal dust, a three-purpose valve on a single hydraulic prop used under the ground of a coal mine causes sealing components of the prop to be seriously worn, the original supporting force for liquid leakage of a three-purpose valve drops, the service life of a prop is short, and steel balls in a three-purpose valve is damaged because of stress so that accidents caused by objects flying out to injure workers happen. The utility model is characterized in that the cover body of the dustproof safety cover is designed according to shapes and sizes of three-purpose valves; the dustproof safety cover is composed of connecters, O-shaped sealing rings, and a supporting seat for annular rings; the bottom of the cover is provided with a clamping mouth (7) which is tightly buckled with a mouth and a clamping mouth of a three-purpose valve, an O-shaped sealing ring (3) which is arranged between the clamping mouth (7) and the bottom of the cover so that the three-purpose valve is sealed, and the bottom of the cover is provided with a circular supporting seat (1), a slot connecting hole (8), and a pin fixing hole which are used for connecting a three-purpose valve and the dustproof safety cover.

Description

The triple-use valve safety head that prevents dust

The utility model belongs to mechanical manufacturing field, is specifically related to the dustproof safety head of triple-use valve on a kind of underground mine use hydraulic prop.

As everyone knows, the triple-use valve on the hydraulic prop that current coal industry uses is though there is higher Security, but it is improper owing to overhauling, safeguard, maintaining, reason such as operator's misoperation when fluid injection, all produces dither simultaneously in the triple-use valve in addition, make steel ball generation resonance in the valve, cause fatigue, under high pressure break, the object casualty accident that flies out happens occasionally, give underground work personnel's life safety, constitute greatly threat.Because the subsurface environment condition is poor, coal dust is big, and the triple-use valve spout is very easily polluted, coal dust can enter in the individual prop at any time during fluid injection, causes the wearing and tearing of pillar lifting process sealed member, makes the triple-use valve leakage, setting pressure descends, and causes down-hole partial roof falling at actual accident the working life of shortening individual prop.

The purpose of this utility model, exactly in order to solve on the hydraulic prop that uses under the coal mine triple-use valve because of maintenance, maintaining is improper, the inner dither that produces of triple-use valve under high pressure breaks steel ball during fluid injection, and object flies out and hurts sb.'s feelings or because the down-hole pollution caused by coal dust, accelerate sealed member wearing and tearing in the individual prop lifting process, setting pressure is descended, shorten individual prop working life to topic, a kind of triple-use valve that forms with the manufacturing of steel body workpiece of design safety head that prevents dust.

A kind of dustproof safety head of triple-use valve that forms with the manufacturing of steel body workpiece, it is characterized in that on hydraulic prop triple-use valve body (2), set an annular ring bearing (1), notch (8), lock-joint (5), dustproof lid (4), O RunddichtringO (3) coupling rod (6), bayonet socket (7) composition are established in the bearing top.The said triple-use valve lid (4) that prevents dust is provided with the coupling rod (6) that links to each other with annular ring bearing (1), the lid mouth bayonet socket (7) that is complementary with triple-use valve body (2), be located at the O RunddichtringO (3) that covers between the end and the bayonet socket, be provided with fixing notch (8) of bearing top and support fixation coupling rod (6) and lock-joint (5).

The utility model is to realize like this, on hydraulic prop triple-use valve body, a fastening annular ring bearing, bearing top slotted opening, a supporting with it lock-joint is set 45 ℃ of coupling rods of triple-use valve dust cover is supported positioning and fixing with pin, dust cover is being buckled into the triple-use valve mouth, under the effect of lid end bayonet socket and O RunddichtringO, tighten or sealing with triple-use valve body mouth, make triple-use valve in fluid injection and running, be in sealing state, prevent pollution caused by coal dust or immerse valve body, make the stressed breakage of steel ball, penetrate the object accident and hurt sb.'s feelings, prolong the working life of individual prop.Reach purpose of design.

Further describe in conjunction with the accompanying drawings and embodiments

Fig. 1 is the dustproof safety head plan view of triple-use valve

Fig. 2 is the dustproof safety head sectional structure chart of triple-use valve

In conjunction with Fig. 1, Fig. 2, the dustproof safety head of this triple-use valve selects for use the steel part material mechanical to process, earlier tighten an annular ring bearing (1) during use at individual prop triple-use valve body (2), locate to inlay the lid coupling rod (6) supporting at its top notch (8) with it, crossing lock-joint (5) with the pin string fixes with the coupling rod top, make it support positioning and fixing, to prevent dust lid (4) fastening at the triple-use valve mouth, the lid end, add O RunddichtringO (3) and bayonet socket (7), make triple-use valve be in running under the tight sealing state of tegmentum, prevent that steel ball causes the generation of the ejaculation object casualty accident that breaks and the triple-use valve leakage shore supports power that causes because of pollution caused by coal dust to descend in the valve because of pressure strengthens, prolonged the working life of hydraulic prop.When maintenance, buckle dust cover when safeguarding, carry out operation, fastening dust cover after maintenance is finished, triple-use valve is in for a long time link closely or sealing state in work, reach safe dust-tight purpose.

The utility model is best suited for all kinds of mines and uses safely with triple-use valve on the hydraulic prop is dustproof.

Claims

1, the dustproof safety head of a kind of triple-use valve, mainly by be located at annular ring bearing (1) bearing notch (8) on the triple-use valve body (2), lock-joint (5), dustproof lid (4), O RunddichtringO (3), fixedly the coupling rod of lid (6), lid end bayonet socket (7) are formed, it is characterized in that being provided with a dustproof lid (4) that is complementary with triple-use valve body (2) bore, cover end bayonet socket (7), coupling rod (6).

2, the dustproof safety head of the triple-use valve shown in claim 1 is characterized in that being provided with an annular ring bearing (1) on triple-use valve body (2), the bearing top be provided with one with supporting notch (8) and the lock-joint (5) of coupling rod (6).

3, the dustproof safety head of the triple-use valve shown in claim 1 is characterized in that being provided with an O RunddichtringO (3) between dust cover (4) end and bayonet socket (7).