CN2103056U

CN2103056U - Dished valve with limit device

Info

Publication number: CN2103056U
Application number: CN 91212247
Authority: CN
Inventors: 胡世安; 梁福国
Original assignee: WUYI ELECTRICAL EQUIPMENT FACTORY HENGYANG CITY
Current assignee: WUYI ELECTRICAL EQUIPMENT FACTORY HENGYANG CITY
Priority date: 1991-02-13
Filing date: 1991-02-13
Publication date: 1992-04-29

Abstract

The utility model relates to a butterfly valve with a limit device, comprising a valve body, a valve handle, a valve blade, a sealing ring, and a pressing block. The pressing block is provided with a fan-shaped notch whose included angle is 120 DEG. On the valve handle, a position corresponding to the notch of the pressing block is provided with a limit screw. The pressing block is arranged on the conjoint position between the valve body and the valve handle (the notch is corresponding to the limit screw on the valve handle), and the sealing ring is arranged under the pressing block. The sealing ring is fixed on the valve body by the pressing block through rivets. Therefore, the valve handle and the valve blade rotate at a range of 120 DEG under the actions of the pressing block and the limit screw, and leakage accidents caused by the sealing position of the valve blade being damaged are effectively avoided.

Description

Dished valve with limit device

The utility model relates to a kind of pipeline control that is used for, the butterfly valve of the oil circuit control usefulness of particularly a kind of power transformer and some special transformer upper box and radiator.

Known butterfly valve is made up of valve body, valve handle, valve disc, seal ring and briquetting; The valve disc and the valve handle riveting that are contained in the valve body are integral, and can do 360 ° of rotations under the effect of valve handle in valve body; Seal ring is contained in the junction of valve handle and valve body, and is fixed on the valve body with briquetting.

There is following deficiency in the butterfly valve of this structure: because valve handle disalignment 30～300 μ m appear in error on the processing technology inevitably, so after valve disc rotated 360 °, the valve disc sealing part went to pot, causes leakage accident.

The purpose of this invention is to provide and a kind ofly can overcome butterfly valve above deficiency, with stopper, in less than 180 ° of scopes, rotate with control valve handle and valve disc.

Technical solution of the present utility model is: a limit stoper that plays position-limiting action is housed in the junction of valve body and valve handle, valve handle and valve disc can only be rotated in less than 180 ° scope.

The further solution of the utility model is: banking stop is equipped with in the junction at valve body and valve handle, an angle is arranged less than 180 ° sector notch on it, and a stop screw banking stop is equipped with in the position of corresponding banking stop breach on valve handle.

The angle of sector notch is preferably 120 °.

Another solution of the present utility model is: an angle is arranged less than 180 ° sector notch on briquetting, a stop screw is equipped with in the position of corresponding briquetting breach on valve handle.

The utility model is compared with known butterfly valve owing to adopt as above design, can control valve handle and valve disc and rotate in less than 180 ° of scopes, avoids the destruction of valve disc, thereby guarantees the control action of butterfly valve, and prolongs the working life of butterfly valve.

Below in conjunction with drawings and Examples detailed structure of the present utility model is further described:

Accompanying drawing 1 is a structural representation of the present utility model

Accompanying drawing 2 is the plan view of accompanying drawing 1

As shown in drawings, the utility model is made up of valve body (1), valve handle (2), valve disc (3), seal ring (4) and briquetting (5), briquetting is made with the thick galvanized steel plain sheet of 3mm, it is 120 ° sector notch (6) that an angle is arranged on it, simultaneously, a M is equipped with in the position of corresponding briquetting breach on valve handle ₃The stop screw of * 7.5mm (7).Briquetting is contained in the junction (stop screw on the corresponding valve handle of briquetting breach) of valve body and valve handle, and seal ring (4) is equipped with in bottom, and briquetting (5) is fixed on seal ring (4) on the valve body with rivet (8).Like this, valve handle and valve disc can only rotate in 120 ° scope under the effect of briquetting and stop screw, thereby can avoid the valve disc sealing part to be destroyed.

Claims

1, a kind of butterfly valve with stopper, it comprises valve body, valve handle, valve disc, seal ring and briquetting, the valve disc and the valve handle riveting that are contained in the valve body are integral, seal ring is contained in the junction of valve body and valve handle, and be fixed on the valve body with briquetting, it is characterized in that being equipped with a limit stoper that valve handle and valve disc can only be rotated in less than 180 ° of scopes in the junction of valve body and valve handle.

2, butterfly valve as claimed in claim 1 is characterized in that in the junction of valve body and valve handle a banking stop being housed, and an angle is arranged less than 180 ° sector notch on it, and a stop screw is equipped with in the position of corresponding banking stop breach on valve handle.

3, butterfly valve as claimed in claim 2, it is characterized in that having on the described banking stop angle is 120 ° sector notch.

4, a kind of butterfly valve with stopper, it comprises valve body, valve handle, valve disc, seal ring and briquetting, the valve disc and the valve handle riveting that are contained in the valve body are integral, seal ring is contained in the junction of valve body and valve handle, and be fixed on the valve body with briquetting, it is characterized in that having on briquetting an angle less than 180 ° sector notch, a stop screw is equipped with in the position of corresponding briquetting breach on valve handle.

5, butterfly valve as claimed in claim 4, it is characterized in that having on the described briquetting angle is 120 ° sector notch.