CN102606758A

CN102606758A - Gate plate

Info

Publication number: CN102606758A
Application number: CN2012101081026A
Authority: CN
Inventors: 梁敬喜
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-13
Filing date: 2012-04-13
Publication date: 2012-07-25

Abstract

The invention relates to a valve opening-closing part, in particular to a gate plate on a gate valve. A lifting passage (4) for lifting of a valve rod is arranged in the center of a valve body (2), a thread (1) is arranged in the lifting passage (4) or a through groove from the front to the back is arranged in a cake face of the valve body (2), the center of the through groove is positioned on the lifting passage (4), colloidal rubber materials (3) are lined on the outer surface of the valve body (2) or copper or other alloy is welded to a seal surface of the valve body. The size of the valve plate can be decreased while the thickness of a valve cap and the valve plate is unchanged, so that cost is reduced.

Description

Flashboard

Technical field

The present invention relates to a kind of flashboard of gate valve open-shut device, especially gate valve.

Background technique

Gate valve generally comprises; Flashboard, valve rod, valve body and valve gap, valve body connects with valve gap, and valve rod is located therein; Valve rod connects with flashboard; The valve rod upper end connects with handwheel or motor machine, difference bit copper or other alloy things on the sealing surface of flashboard and valve seat, and perhaps the flashboard external layer is lined with gluey rubber material.For valve rod is connected with flashboard, be provided with connection groove inverse-T-shaped or " mouth " shape at the flashboard top, place tetragonal nut in the groove; The valve rod lower end is run through with tetragonal nut, flashboard and is connected; Behind the valve wide open, flashboard is raised to top of chamber in the valve gap, and the valve gap inner chamber must be provided with enough spaces and guarantee that valve can standard-sized sheet; Therefore the connecting mode of valve rod and flashboard has increased the height and the tetragonal nut of valve gap cavity virtually, and cost also is restricted.

Summary of the invention

The flashboard that the present invention provides a kind of top not connect groove, thus the height of reduction valve gap cavity reduces the cost.

Solution 1 of the present invention: the flashboard profile is made as pie, and lock body center is provided with and is used for the hoist trunk that valve rod goes up and down, and in hoist trunk, is provided with screw thread.The external table of lock is lined with gluey rubber material or lock body sealing surface bit copper or other alloy things.The valve rod lower end directly with interior being threaded of flashboard hoist trunk.

Solution 2. of the present invention: the flashboard profile is made as pie, is provided with in the lock body to be used for the hoist trunk that valve rod goes up and down, and in lock body cake face, is provided with a groove that leads to the back side from the front; Be centered close on the hoist trunk, this groove is rectangle or circular groove, and the flashboard sealing surface is soft seal; After being placed on rectangle or circular block nut in this groove; The external table of lock carries out line with rubber, the gluey rubber material of lining last layer, and its groove face is sealed by rubber material behind the groove encapsulate of lock body 2 both sides.

Scheme 1 provided by the invention is owing to be made as pie with the flashboard profile; The screw thread that is connected with valve rod is located in the hoist trunk, so flashboard need not be provided with connection groove and tetragonal nut, the height of reduction valve gap cavity in addition; Under the constant situation of thickness, reduce valve gap and flashboard volume, reduce cost.

Scheme 1 provided by the invention is owing to be made as pie with the flashboard profile; Be provided with a groove that leads to the back from the front in the flashboard cake face; Be centered close on the hoist trunk; Groove in the flashboard cake face is equivalent to the connection groove at flashboard top, under the constant situation of thickness, reduces the valve gap volume, reduces cost.

Description of drawings.

Fig. 1. be the present invention program 1 schematic representation.

Fig. 2. be the present invention program 2 schematic representation.

Fig. 3. be the present invention program's 2 front schematic view.

Among the figure, 1. screw thread, 2. lock body, 3 rubber materials, 4. hoist trunk, 5. nut.

Embodiment

Scheme 1: the flashboard profile is pie, and lock body 2 centers are provided with and are used for the hoist trunk 4 that valve rod goes up and down, and car goes out screw thread 2 in hoist trunk 4.Flashboard 2 sealing surfaces become soft seal or hard sealing again, and hard sealing is at sealing surface burn-on copper or other alloy things; The way of soft seal be with in hoist trunk 4 the external table of lock (except that screw thread 1) of the good screw thread of car carry out encapsulate, the gluey rubber material 3 of lining last layer.This external flashboard left and right sides can be provided with guide-track groove or guide rail, perhaps all need not be provided with.

Scheme 2.: like Fig. 2, shown in Figure 3, the flashboard profile is pie, and lock body 2 centers are provided with and are used for the hoist trunk 4 that valve rod goes up and down, and a groove that leads to the back side from the front is arranged in the lock body 2 cake faces, is centered close on the hoist trunk 4, and the grooved of this groove is rectangle or circle.The flashboard sealing surface is soft seal, and rectangle or circular block nut 5 are placed in this groove, again lock body 2 appearances is carried out line with rubber, the gluey rubber material 3 of lining last layer, and its groove face is by rubber material 3 sealings behind the groove encapsulate of lock body 2 both sides.

Claims

1. flashboard, lock body (2) center are provided with and are used for the hoist trunk (4) that valve rod goes up and down, and it is characterized in that: be provided with screw thread (1) in the hoist trunk (4) of said lock body (2).

2. according to the described flashboard of claim 1, it is characterized in that: said lock body (2) appearance is lined with gluey rubber material (3).

3. flashboard; Lock body (2) center is provided with and is used for the hoist trunk (4) that valve rod goes up and down; It is characterized in that: a groove that leads to the back side from the front is arranged in said lock body (2) the cake face, be centered close on the hoist trunk (4), the grooved of this groove is rectangle or circle.

4. according to the described flashboard of claim 3; It is characterized in that: said flashboard sealing surface is soft seal; After being placed on rectangle or circular block nut (5) in this groove; Lock body (2) appearance is carried out line with rubber, the gluey rubber material (3) of lining last layer, and its groove face is sealed by rubber material (3) behind the groove encapsulate of lock body 2 both sides.