CN1101530C - Double-track composite valve on-off structure - Google Patents

Abstract

The present invention relates to a double-rail type valve composite opening and closing structure which is mainly formed by the combination of a supporting frame (1), a screw rod (2), a valve rod (3) and a spacing pin (4), wherein the supporting frame (1) has a right-angled track, and the screw rod (2) has a spiral track. When carrying out the single movement of rotation or lifting under the action of external force, the screw rod (2) forcibly drives the valve rod (3) and the spacing pin (4) to operate along the right-angled track on the supporting frame (1), so a valve can be opened and closed.

Description

Double-track composite valve on-off structure

The invention belongs to mechanical industry, valve technology field.

Background technique: for technical parameters such as the latus rectum of optimizing ball valve, butterfly valve, stopcock, pressure, moment of torsion, life-spans, in recent years, ball valve, butterfly valve, the stopcock of low scratch sealing pairs such as stack valve seat, combination spheroid, combination butterfly plate, combination cock and swing spheroid successively appearred in valve technology field, though these sealing configuration technology respectively have excellent lacking, and reach the effect of industrialized developing, use substantially.The opening-closing process of above-mentioned valve generally is the composition operation process that rotation adds lifting, and its on-off structure generally is divided into three kinds: rotation and lifting separate operating type, helical orbit composite-action type, 90 degree right angle track composite-action types.

Summary of the invention: the purpose of this invention is to provide a kind of double-track composite valve on-off structure that adopts helical orbit to add the right angle track.

The compound on-off structure of double-track that is applicable to ball valve, butterfly valve, stopcock mainly is to be combined by support, screw rod, valve rod or valve rod extension bar, position limit pin.Its major character is: the right angle track is arranged on the support, helical orbit is arranged on the screw rod, on valve rod or the valve rod extension bar position limit pin is housed, position limit pin crosses in the middle of right angle track and the helical orbit on the screw rod on the support.Its working principle also has two kinds of forms: a kind ofly be that screw rod can not lifting, can only rotate.Screw rod is under the effect of external force, and counterclockwise or turn clockwise, the helical orbit on the screw rod is forced to drive the composite valve on-off that valve rod and position limit pin finish " risings-rotation-rotation-decline " by the track on the right angle track on the support and moved; Another kind is that screw rod can not rotate, can only lifting.Screw rod force to drive by the helical orbit on the elevating screws bar under the effect of external force valve rod and position limit pin by support on track on the right angle track composite valve on-off of finishing " risings-rotation-rotation-decline " move.Increase upper sealing device as need, increase once rising, down maneuver in the middle of its opening-closing process again.

On-off structure of the present invention is compared with existing on-off structure: it is simple that ratio rotates, lifting separates operating type, and the valve operation worker is difficult for makeing mistakes; Eliminated invalid even harmful course of action fully than helical orbit composite-action type, and highly low, open and close fast; Than 90 degree right angle track composite-action type better reliability.

The present invention further specifies structure characteristic of the present invention by the following drawings and embodiment.

Accompanying drawing is according to a kind of structural representation in the double-track composite valve on-off structure of the present invention's proposition.

Have on the support 1 one secondary symmetrical and with the same fixed right angle of support track groove. Spiral One secondary symmetric helix track groove is also arranged, with the screw rod synchronous rotary on the bar 2. Valve rod 3 lower ends with Spheroid or combination spheroid or combination butterfly plate or faucet body, combination faucet body connect, and there is a limit upper end The position pin-and-hole. Spacer pin 4 crosses in limit pin hole, helical trajectory groove, right angle track groove. Limit Sliding sleeve 5 is equipped with at the two ends of position pin 4. The turning moment that is subjected to handle 8 when screw rod 2 is done the time spent, Under the restriction of bearing 6 and bearing gland 7, screw rod 2 rotations, the helicla flute on the screw rod Pressure with ovable valve stem 3 and spacer pin 4 and sliding sleeve 5 by the operation of the trough with straight angle track on the support 1, Make valve opening and closing.

Embodiment: adopt structure of the present invention to combine with the valve that need do rotation, the compound keying of lifting.Manufacture and design simple in structurely, open and close reliable valve products.

Claims (1)

1. double-track composite valve on-off structure mainly is to be combined by support, screw rod, valve rod, position limit pin, between valve rod and support screw rod is housed, position limit pin crosses in the middle of the right angle rail slot of the helical orbit groove of valve rod and screw rod and support, directly transmit outer power by screw rod, it is characterized in that:

A. have the right angle track on the described support;

B. have helical orbit on the described screw rod;

C. on the described valve rod position limit pin is housed;

D. described screw rod and helical orbit are driving link, and valve rod, position limit pin are Passive part, and support and right angle track are quiet moving part.

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