CN2256498Y

CN2256498Y - Built-in rod valve with open and close display device

Info

Publication number: CN2256498Y
Application number: CN 96207220
Authority: CN
Inventors: 马德秀; 肖南平; 卞和满
Original assignee: No2 Machine Building Factory North China Administrative Bureau Of Petroleum (c
Current assignee: No2 Machine Building Factory North China Administrative Bureau Of Petroleum (c
Priority date: 1996-03-29
Filing date: 1996-03-29
Publication date: 1997-06-18
Anticipated expiration: 2006-03-29

Abstract

The utility model relates to the improvement of a built-in rod valve structure, which mainly solves the problem that the open and the close states of a valve can not be directly observed from an appearance. The utility model is characterized in that a key is arranged between a joint of a valve rod and a press cap of a bearing and a press plate is installed on the press cap of a bearing, which constitutes a display device. The utility model has the advantages of simple structure and easy manufacture. The utility model is convenient to rebuild an original built-in rod valve. The open and the close states of the valve can be conveniently known by using the utility model. The utility model is convenient to operate and check the flow of lines.

Description

Ono-rising-stem valve with switch display unit

The utility model relates to a kind of improvement of ono-rising-stem valve structure.

At present, some is an ono-rising-stem valve in the used at the scene valve, as PFF type parallel slide valve door.This valve is owing to himself structure, and during rotation hand wheel, valve rod does not vertically move, and can't show its on off state.Valve is in opening state or closed condition, and perhaps opening degree how, can't see from the outward appearance of valve, can make troubles to operation like this, particularly in the many places of mounted valve, or when the situation is critical, can cause misoperation, even also can cause the accident.

The purpose of this utility model is a kind of display unit that designs for the use condition of improving this ono-rising-stem valve, makes valve from directly seeing its on off state in appearance, thereby for access tube linear flow journey or operate and bring convenience.

Technical solution of the present utility model is to realize like this, a kind of ono-rising-stem valve with switch display unit, by valve body, be installed in the valve gap on the valve body, be installed in valve seat, valve plate in the valve body, be installed in formations such as interior valve rod of valve gap and valve rod joint, bearing, safety pin, bearing pressure cap, handwheel, its special way is, by screw thread the indication nut is installed on the valve gap joint, between indication nut and the bearing pressure cap key is installed.

In above-mentioned technical solution, its special way also is, on the bearing pressure cap pressing plate is installed, and between indication nut and valve rod joint seal ring is housed, and between pressing plate and indication nut seal ring is housed.

The utility model has the advantages that simple in structurely, not only be easy to make, also be easy to original ono-rising-stem valve is transformed, very easy to use, the on off state of valve is come into plain view, help operation and access tube linear flow journey.

Fig. 1 is the utility model overall structure sectional view.

Fig. 2 is a display unit phantom of the present utility model.

Be described further (embodiment) below in conjunction with accompanying drawing:

Valve seat 13 is installed in the valve body 1, valve plate 14 is installed by screw thread in valve rod 3 lower ends, valve rod 3 middle parts are installed in the valve gap 12, seal ring 11 is installed between them, valve rod 3 upper ends are installed in the valve rod joint 6, and safety pin 9 is installed between them, and the bottom of valve rod joint 6 is equipped with bearing 8, bearing 8 is installed in the bearing pressure cap 4, and display unit 7 is to be made of indication nut 15, key 17, pressing plate 16 seal rings 18,19 etc.Indication nut 15 is installed on the valve rod joint 6 by screw thread, seal ring 19 is housed between them, and key 17 is fixedly mounted on the bearing pressure cap 4, has keyway on the indication nut 15, make between indication nut 15 and the key 17 and can slide, between pressing plate 16 and the indication nut 15 seal ring 18 is installed.In the upper end of valve rod joint 6 handwheel 5 is installed, greasing joint 2 is installed on valve gap 12.

This ono-rising-stem valve with display switch device is installed in the flow process pipeline, when opening, rotation hand wheel 5, valve plate 14 is raised, valve is opened, and indicates nut 15 also to be screwed out by screw thread simultaneously, and operator are easy to find out that valve is unlocked, screw out according to indication nut 15 what, the also size of valve opening as can be seen.When closing, rotation hand wheel 5 round about, and indication nut 15 is gone by precession, represent that promptly valve closes.

Claims

1. ono-rising-stem valve with switch display unit, by valve body (1), be installed in the valve gap (12) on the valve body (1), be installed in valve seat (13), valve plate (14) in the valve body (1), be installed in interior valve rod (3) of valve gap (12) and valve rod joint (6), bearing (8), safety pin (9), bearing pressure cap (4), handwheel formations such as (5), it is characterized in that, upward indication nut (15) is installed at valve gap joint (6), between indication nut (15) and the bearing pressure cap (4) key (17) is installed by screw thread.

2. the ono-rising-stem valve with switch display unit according to claim 1, it is characterized in that, pressing plate (16) is installed on bearing pressure cap (4), between indication nut (15) and valve rod joint (6), seal ring (19) is housed, between pressing plate (16) and indication nut (15), seal ring (18) is housed.