CN201258996Y

CN201258996Y - Forged gate valve

Info

Publication number: CN201258996Y
Application number: CNU2008201849044U
Authority: CN
Inventors: 苏立功; 韩卫国; 王飞; 朱东升; 吴志军; 尹胜舟
Original assignee: Huangshan Yongjia (Group) Co Ltd; ANHUI TUNXI HIGH PRESSURE VALVE Co Ltd
Current assignee: Huangshan Yongjia (Group) Co Ltd; ANHUI TUNXI HIGH PRESSURE VALVE Co Ltd
Priority date: 2008-08-22
Filing date: 2008-08-22
Publication date: 2009-06-17
Anticipated expiration: 2018-08-22

Abstract

The utility model discloses a casting brake valve which comprises a valve body (1), a valve seat (2), a flashboard (3), a valve rod (4), a valve cover (5), a valve rod nut (6) and a handwheel (7); the valve body (1) is a structure which is transited by a smooth curve from the connection flanges at the two ends thereof; and the valve body (1) is an integral structure without an internal connection surface. The technical scheme is adopted, and the valve body and the flanges are designed to be integral; the working procedure of welding is reduced; ray inspection is not needed to carry out on welding lines; the integral seal performance of the valve body is improved; the product cost is reduced; the shell of the integral casting structure does not have leakage.

Description

A kind of forging gate valve

Technical field

The utility model belongs to the technical field of valve, and specifically, the utility model relates to a kind of forging gate valve.

Background technique

At present, common forging gate valve is to be made separately separately by valve body, flange, and last gang welding is formed.Shown in Figure 1 as in this Figure of description, the position of its welding weld seam 8 as shown in FIG..Weld seam 8 is prone to slag inclusion, pore, and causes leaking outside of valve, in addition, because the post-weld stress elimination is bad, easily produces distortion, and influence seals.

The model utility content

Problem to be solved in the utility model provides the forging gate valve that a kind of valve body is solid forging, its objective is the overall sealing performance that improves valve body.

To achieve these goals, the technological scheme taked of the utility model is:

This forging gate valve provided by the utility model, comprise valve body, valve seat, flashboard, valve rod, valve gap, Stem Mut and handwheel, described valve body is the smooth surface transitional structure from adpting flange to the agent structure at its two ends, and described valve body is the overall structure of a no inner junction surface.

For making the utility model more perfect, more detailed and concrete technological scheme below also further having proposed, to obtain best practical effect, realize goal of the invention better, and improve novelty of the present utility model and creativeness:

Intercommunicating pore from flange to spool on the valve body described in the utility model, adopting axis is the hole of a straight line, the gradient in this hole is less than the maximum angle that allows of the technology of machining tool; The counterbore degree of depth in this aperture, hole is less than the maximum degree of depth that allows of the technology of machining tool.

The structure of the as a whole forging of described valve body.

The utility model adopts technique scheme, and valve body, flange design are integral, and reduces welding process, need not butt welded seam and carries out radiographic inspection, has improved the overall sealing performance of valve body, has reduced product cost, the solid forging structure, and housing does not have and leaks outside.

Description of drawings

Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are made brief description:

The prior art constructions schematic representation that Fig. 1 relates to for this specification;

Fig. 2 is the schematic representation of structure provided by the utility model.

Adopt unified mark in this Figure of description, be respectively:

1, valve body, 2, valve seat, 3, flashboard, 4, valve rod, 5, valve gap, 6, Stem Mut, 7, handwheel, 8, weld seam.

Embodiment

Contrast accompanying drawing below, by description to embodiment, to effect and working principle, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technological scheme had more complete, accurate and deep understanding to help those skilled in the art.

The of the present utility model structure expressed as Fig. 2, the utility model is a kind of forging gate valve, comprises valve body 1, valve seat 2, flashboard 3, valve rod 4, valve gap 5, Stem Mut 6 and handwheel 7.

In order to solve the problem that exists at the described present known technology of this specification background technique part and to overcome its defective, realize ... goal of the invention, the technological scheme that the utility model is taked is:

As shown in Figure 2, this forging gate valve provided by the utility model, be called for short the solid forging gate valve, described valve body 1 is the smooth surface transitional structure from adpting flange to the agent structure at its two ends, and described valve body 1 is the overall structure of a no inner junction surface.The purpose of this utility model provides a kind of solid forging gate valve of avoiding housing to leak outside.The structure of described valve body 1 as a whole forging.Valve body and flange design are integral, and directly forge.

Valve body in the utility model and flange solid forging, the stress that has produced when having avoided the welding of valve body and flange, housing does not have outer leak source, need not butt welded seam and carry out radiographic inspection, greatly reduce product cost like this, quality of product class height is a kind of economic and practical new technique.

The utility model also provides following exemplifying embodiment, selects to use when implementing the utility model for those skilled in the art:

Embodiment one:

Intercommunicating pore from flange to spool on the valve body 1 described in the utility model, adopting axis is the hole of a straight line, the gradient in this hole is less than the maximum angle that allows of the technology of machining tool; The counterbore degree of depth in this aperture, hole is less than the maximum degree of depth that allows of the technology of machining tool.Said structure is guaranteed after making the split welded structure into the solid forging structure, the manufacturability of its endoporus processing.

Embodiment two:

The operating process of above-mentioned solid forging gate valve is as follows:

When handwheel turned clockwise, handwheel drove Stem Mut and rotates, and Stem Mut drives valve rod decline and rotates, and drove flashboard simultaneously and descended throttle down.When handwheel was rotated counterclockwise, handwheel drove Stem Mut and rotates, and Stem Mut drives the valve rod rising and rotates, and drove flashboard simultaneously and rose, and opened valve.

The technological scheme that the utility model adopted compared with prior art, has outstanding substantial characteristics, obtains tangible progress technically, and effect is obvious, and the value of applying is arranged in the valve industry.So, the utlity model has novelty, creativeness and practicability.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.

Claims

1, a kind of forging gate valve, comprise valve body (1), valve seat (2), flashboard (3), valve rod (4), valve gap (5), Stem Mut (6) and handwheel (7), it is characterized in that: described valve body (1) is the smooth surface transitional structure from adpting flange to the agent structure at its two ends, and described valve body (1) is the overall structure of a no inner junction surface.

2, according to the described forging gate valve of claim 1, it is characterized in that: described valve body (1) is gone up the intercommunicating pore from flange to spool, and adopting axis is the hole of a straight line, and the gradient in this hole is less than the maximum angle that allows of the technology of machining tool; The counterbore degree of depth in this aperture, hole is less than the maximum degree of depth that allows of the technology of machining tool.

3, according to claim 1 or 2 described forging gate valves, it is characterized in that: the structure of the as a whole forging of described valve body (1).