KR20170044445A - Metal seat ball valve for powder transferring - Google Patents

Abstract

The present invention relates to a metal seated ball valve for powder transport, and more specifically, relates to a metal seated ball valve for powder transport configured to minimize damage due to frictional contact between a ball and a metal seated, as well as to safely block leakage of a fluid even if the damage is caused. The present invention includes a plurality grooves formed along the circumferential direction at a portion, contacting the ball, of a surface of the metal seated. Thus, the present invention enables the metal seated to secure high hardness and corrosion resistance through surface treatment.

Description

METAL SEAT BALL VALVE FOR POWDER TRANSFERRING FOR POWDER TRANSFER

The present invention relates to a metal-sheet ball valve, and more particularly to a metal-sheet ball valve for powder transport, which minimizes damages caused by friction between a ball and a metal sheet and can reliably prevent leakage of fluid even if damage occurs will be.

Generally, a ball valve is used as a means for establishing a communication with a fluid flow by installing it on a piping for transporting gas or liquid. Such a ball valve generally includes a main body and a spherical ball provided in the main body A sheet for blocking fluid leakage between them, and an operation handle for controlling the ball.

In designing a conventional ball valve, it is possible to control the accurate fluid flow rate by the ball position manipulation in addition to the airtightness to prevent leakage of the fluid to be transported, the durability to prevent the wear of the seat by the ball valve And controllability that must be taken into account, and they are a measure of the criteria for evaluating the performance of the ball valve.

Particularly, when the seat mounted in the main body of the ball valve is made of a rubber-based material, it is difficult to expect complete leakage of water. Since the rubber sheet is abraded by friction over time, Repairing or replacing of the apparatus, etc., frequently accompanies problems such as excessive expenditure of management costs.

In addition, since the leakage preventing device of the conventional ball valve is installed at the both ends of the main body in duplicate, the structure is complicated and the cost of the product is greatly increased.

As a conventional technique related to the ball valve described above, for example, in Japanese Patent Laid-Open Publication No. 1998-0041628, an elastic valve seat having an O-ring is attached to a pressurizing portion of a fluid, The valve seat is provided so that even when the hydraulic pressure increases, the secondary cutoff is performed, and the slit sealant is forcedly injected around the metal valve seat so as to be able to block the third time, Discloses a technology relating to a ball valve device for a valve seat and a valve seat for a valve seat of a valve seat of a valve seat and a seat retainer for preventing leakage due to deformation and damage due to high temperature deterioration of a seal ring mounted for preventing leakage between a valve body and a seat retainer, It is possible to maintain the airtightness and operating function of the ball valve under high temperature conditions by preventing the loss of function of the valve. It is described for your sealing device ".

In addition, in Japanese Patent No. 0363022, elasticity is exerted on a valve seat contacting an opening / closing port, so that even if a valve seat is worn or a clearance due to machining error occurs, a valve-shaped opening and a valve seat are elastically contacted with each other, A valve seat of a ball valve " in which the lifetime of the valve seat can be greatly extended as well as a valve seat of a ball valve which is kept in contact with the opening and closing port of the ball valve is disclosed in Japanese Patent No. 0782900 Discloses a " ball valve and a valve opening / closing system using the same, " which can prevent wear of the seat ring by allowing the ring to be spaced apart from the surface of the door when the door is rotated.

As described above, it can be said that it is very important to solve the problem of leakage of the fluid in the pipe due to the damage of the seat due to the frictional contact between the ball and the seat in the ball valve. Especially, in the case of a martial-sheet type ball valve which is frequently used in a piping system or a powder transfer pipe line in which explosion of high-temperature and high-temperature is a problem, damage due to friction is caused in both ball and seat.

Korean Patent Publication No. 2008-0113664 (December 31, 2008)

It is therefore an object of the present invention to minimize the damage caused by frictional contact between the ball and the metal sheet and to prevent leakage of the fluid even if damage occurs The present invention provides a metal sheet ball valve for powder transportation.

In order to accomplish the above object, according to the technical idea of the present invention, there is provided a metal sheet ball valve for powder transport, wherein a plurality of grooves are formed along the circumferential direction at a portion of the surface of the metal sheet, Is characterized by securing high hardness and corrosion resistance through surface treatment.

The metal sheet ball valve for powder transport according to the present invention minimizes the damage due to frictional contact between the ball and the metal sheet and can safely block the leakage of the fluid even if damage occurs.

1 and 2 are sectional views of a metal sheet ball valve according to an embodiment of the present invention
3 is a view for explaining the configuration of a metal sheet in a metal sheet ball valve according to an embodiment of the present invention.
FIGS. 4 to 7 are views for explaining a surface treatment method of a ball and a metal sheet in a metal sheet ball valve according to an embodiment of the present invention. FIG.

The metal sheet ball valve according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention, and are actually shown in a smaller scale than the actual dimensions in order to understand the schematic structure.

Also, the terms first and second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

FIGS. 1 and 2 are cross-sectional views of a metal sheet ball valve according to an embodiment of the present invention, and FIG. 3 is a reference view for explaining the structure of a metal sheet in a metal sheet ball valve according to an embodiment of the present invention.

As shown in the figure, in the metal sheet ball valve according to the embodiment of the present invention, a plurality of grooves are formed along the circumferential direction of the surface of the metal sheet in contact with the balls.

Thus, the fluid remains in the grooves formed on the surface of the metal sheet to lubricate the balls to reduce damage due to friction, and even if the metal sheet is damaged, the fluid in the pipe remains in the groove and can be prevented from leaking to the outside .

Also, as shown in FIGS. 4 to 7, the metal sheet ball valve according to the embodiment of the present invention can ensure high hardness and corrosion resistance by surface treatment of the ball and the metal sheet. In this surface treatment process, pack coating is a CVD process. Generally, CVD is performed by injecting a reaction gas from the outside. However, in this process, a material is put into a solid coating material having a unique composition, Is unique in that it secures.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the present invention, which is defined by the limitations of the following claims.

Claims (2)

A metal sheet ball valve comprising a metal sheet,
Wherein a plurality of grooves are formed along a circumferential direction of the surface of the metal sheet in contact with the balls. The method according to claim 1,
Wherein the metal sheet has high hardness and corrosion resistance through surface treatment.

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