CN201434142Y - A display device for opening degree of dark rod gate valve - Google Patents

Abstract

The utility model provides an opening degree display device of an inside screw nonrising stem type gate valve, which comprises a graduated tape mechanism. One end of the tape mechanism is connected with the valve rod of the gate valve, and the other end of the tape mechanism is connected with an elastic resetting mechanism. In the utility model, a supporting plate is fixed on a valve cap and is provided with a scroll box in which a resetting spring and the tape mechanism are arranged; the tape mechanism is provided with graduation marks; one end of the tape mechanism is connected with the resetting spring, and the other end of the tape mechanism passes through one outlet on the scroll box and is fixedly connected with the valve rod; with the rotating of the valve rod, one side of the tapemechanism is wound on the valve rod while the other side of the tape mechanism is drawn out of the scroll box; and with the rollback of the valve rod, the resetting spring pulls the tape mechanism back into the scroll box. By the structure, when the valve rod is rotated, the opening range can be read from the graduations of the tape mechanism; and thus, the structure is simple and practical.

Description

A display device for opening degree of dark rod gate valve

technical field

The utility model belongs to the field of gate valve accessories, in particular to an opening degree display device of a concealed rod gate valve.

technical background

At present, it is difficult to judge the opening and closing of the valve from the appearance of the hidden stem gate valve used in industrial pipelines, which is prone to misoperation or twisting of the valve; moreover, the working system has different requirements, and the opening of the valve needs to be adjusted. There is no way to judge the opening degree, and it is very difficult to adjust.

Utility model content

The purpose of the utility model is to overcome the disadvantage that it is difficult to judge the opening and closing and opening degree of the valve from the appearance of the existing dark rod gate valve, and provide an opening display device, which can display the opening degree device of the dark rod gate valve; The existing gate valve can be directly installed and used after modification.

In order to achieve the above purpose, the technical scheme adopted is as follows:

A device for displaying the opening of a concealed stem gate valve, comprising a tape winding mechanism with scales, one end of the tape winding mechanism is connected to the valve stem of the gate valve, and an elastic reset device is connected to the other end of the tape winding mechanism.

The winding mechanism is arranged on the valve cover of the gate valve.

The tape winding mechanism and the elastic reset device are arranged inside the winding box.

The volume box is installed on a support plate, and the support plate is fixed on the valve cover.

The elastic return device adopts a return spring.

The winding mechanism is connected with one end of the return spring and installed in the winding box as a ring.

In the utility model, a support plate is fixed on the valve cover, and a roll box is installed on the support plate. A return spring and a tape winding mechanism are installed in the winding box. A scale mark is provided on the tape winding mechanism. The spring is connected, and the other end is fixedly connected with the valve stem through an outlet on the coil box. With the rotation of the valve stem, the winding mechanism is wound on the valve stem and pulled out from the coil box at the same time. With the reversal of the valve stem, The rewinding mechanism is pulled back into the reel box by the return spring.

Through the above structure, the utility model can read the opening range from the scale of the winding mechanism when the valve stem is rotated, and the structure is simple and practical.

Description of drawings

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

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further.

The structure of the utility model is shown in Figure 1, including valve body 1, valve cover 2, valve cover bolt 3, valve stem 4, pressure ring 5, hand wheel 6, scale tape 7, volume box 8, return spring 9 , Support plate 10. The support plate 10 is fixed on the platform of the bonnet 2 through the bonnet bolts 3, the volume box 8 is installed on the shaft of the support plate 10, one end of the return spring 9 is connected with one end of the scale tape 7, and is installed in a ring shape. In the volume box 8, the other end of the scale tape 7 is fixedly connected with the valve stem 4 by an outlet on the volume box 8 with the pressure ring 5. Scale tape 7 is engraved with scale marks. When the valve stem 4 rotates, the scale tape 7 is pulled out from the volume box 8 while being wound on the valve stem 4; when the valve stem reverses, the return spring 9 pulls the scale tape 7 back to the volume box 8 . Like this, just can know the opening degree of valve from the reading on scale tape 8.

Claims (7)

1, a kind of opening display device of inside screw non-rising stem type gate valve is characterized in that comprising the tape mechanism that has scale, and an end of described tape mechanism is connected with the valve rod of gate valve, and the other end of tape mechanism is connected with elasticity reset device.

2, the opening display device of inside screw non-rising stem type gate valve according to claim 1 is characterized in that described tape mechanism is arranged on the valve gap of gate valve.

3, the opening display device of inside screw non-rising stem type gate valve according to claim 1 and 2 is characterized in that described tape mechanism and elasticity reset device are arranged on volume box the inside.

4, the opening display device of inside screw non-rising stem type gate valve according to claim 3 is characterized in that described volume box is installed on the dunnage, and described dunnage is fixed on the valve gap.

5, the opening display device of inside screw non-rising stem type gate valve according to claim 4 is characterized in that described elasticity reset device adopts Returnning spring.

6, the opening display device of inside screw non-rising stem type gate valve according to claim 5 is characterized in that described tape mechanism is connected with an end of Returnning spring and is installed in the volume box as ring-type.

7, the opening display device of inside screw non-rising stem type gate valve according to claim 6, it is characterized in that being fixed with on the valve gap dunnage, a volume box is installed on the dunnage, in the volume box Returnning spring and tape mechanism are housed, described tape mechanism is provided with the scale sign, one end of tape mechanism is connected with Returnning spring, the other end is fixedlyed connected with valve rod by an outlet on the volume box, rotation along with valve rod, tape mechanism is wrapped on the valve rod on one side, go out from volume box lira on one side,, get back in the volume box by Returnning spring pulling tape mechanism along with the counter-rotating of valve rod.

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