CN201047458Y

CN201047458Y - Valve thrust brake

Info

Publication number: CN201047458Y
Application number: CNU2007200958942U
Authority: CN
Inventors: 王道顺
Original assignee: TIANJIN QINGCHENG TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN QINGCHENG TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2007-04-27
Filing date: 2007-04-27
Publication date: 2008-04-16
Anticipated expiration: 2017-04-27

Abstract

The utility model discloses a valve thrust device which can effectively prolong the service life of a valve. The valve thrust device of the utility model consists of a valve rod middle part and a thrust ring; the external circumferential surface of the valve rod middle part is sequentially provided with three ring thrust concave troughs; the internal circumferential surface of the thrust ring is sequentially provided with two ring embedded concave troughs; the thrust valve rod is coincident with the thrust ring. The thrust ring and the valve rod middle part of the utility model are matched, in order to prevent a check valve rod from dropping and to implement the operation of a nonrising stem by the device. The utility model reduces the operation torque, and finally implements the long service life, maintenance-free and direct embedding of the valve.

Description

The valve thrust device

Technical field

The utility model relates to the valve arrangement field, more particularly, relates to a kind of valve thrust device that can realize dark bar operating function.

Background technique

Existing valve mechanism is being opened or during closing motion at valve closing member, the spinning movement of functional units such as handwheel is converted into the elevating movement of valve rod, the regular elevating movement of valve rod causes the wearing and tearing or the damage of valve rod easily, causes the seepage at valve stem seal position.

The model utility content

Technical problem to be solved in the utility model is, overcomes the deficiencies in the prior art, and a kind of valve thrust device that can effectively prolong life of valve is provided.

The utility model valve thrust device is achieved by following technical proposals, and described device is made up of valve rod middle part and thrust ring, and described valve rod middle part outer circumferential face sets gradually three ring-like thrust grooves; Described thrust ring inner peripheral surface sets gradually two ring-like embedded grooves, and thrust valve rod and thrust ring match.

Thrust ring described in the utility model is combined by left and right semi-ring.

The utility model is cooperated with the valve rod middle part by thrust ring, can prevent that valve rod from coming off, and by the dark bar operation of the fixing realization of this device.Thrust ring can be selected anticreep zinc-copper material for use, and good self lubricity is arranged, and can play to reduce effect of torque.This structure has reduced the operation torque, finally realizes the long lifetime of valve, the non-maintaining direct-burried that reaches.

Description of drawings

Fig. 1 is the utility model valve rod central structure sectional view;

Fig. 2 is the utility model thrust ring structure sectional view.

Embodiment

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

The utility model is made up of valve rod middle part and thrust ring, and as shown in Figure 1, valve rod middle part outer circumferential face sets gradually three ring-

like thrust grooves

1,2 and 3; As shown in Figure 2, the thrust ring inner peripheral surface sets gradually two ring-like embedded grooves 4 and 5, and thrust ring is combined by left and right semi-ring.

Thrust ring cooperates with the valve rod middle part during assembling, and two ring-like embedded grooves coincide because of two boss that ring-like thrust groove forms with the valve rod middle part respectively, coincide thereby valve rod and thrust ring are whole.Adopt said structure, be in transmission connection by screw thread between stem bottom and the valve plate then, valve plate moves up and down and valve rod maintains static in the transmission process, thereby realizes dark bar operation, effectively avoided because of valve rod moves up and down the damage that causes, reached the purpose that prolongs life of valve.

Embodiment recited above is described the utility model preferred implementation; be not that design of the present utility model and scope are limited; under the prerequisite that does not break away from the utility model design philosophy; common engineers and technicians make the technical solution of the utility model in related domain various distortion and improvement all should belong to protection domain of the present utility model.

Claims

1. a valve thrust device is characterized in that, described device is made up of valve rod middle part and thrust ring, and described valve rod middle part outer circumferential face sets gradually three ring-like thrust grooves; Described thrust ring inner peripheral surface sets gradually two ring-like embedded grooves, and thrust valve rod and thrust ring match.

2. valve thrust device according to claim 1 is characterized in that described thrust ring is combined by left and right semi-ring.