CN205013748U

CN205013748U - High leakproofness can unload grey ball valve

Info

Publication number: CN205013748U
Application number: CN201520687015.XU
Authority: CN
Inventors: 黄建海
Original assignee: Jiangsu Wosheng Valve Industry Co Ltd
Current assignee: Jiangsu Wosheng Valve Industry Co Ltd
Priority date: 2015-09-08
Filing date: 2015-09-08
Publication date: 2016-02-03
Anticipated expiration: 2025-09-08

Abstract

The utility model provides a high leakproofness can unload grey ball valve, it relates to valve technical field, and it contains ball valve body, spheroid, lower valve shaft, goes up valve shaft, metal disk seat, support, pneumatic means, the plug screw of releasing, sealing member, STL overlay, ball valve body's center be provided with the spheroid, lower valve shaft one end and last valve shaft one end are connected with the spheroid respectively, the contact is provided with the metal disk seat on the spheroid, goes up valve shaft upper portion and connects pneumatic means, is connected with the support between pneumatic means and the ball valve body, ball valve body's bottom is provided with the plug screw of releasing, the sealed face of spheroid and metal disk seat be provided with the STL overlay, it has the sealing member to inlay in the STL overlay. High leakproofness can unload grey ball valve, the mounting height is low, and is small, uses easy maintenance, long service life, sealing performance is outstanding, the utility model has the advantages of simple structure, set up reasonable, the cost of manufacture low.

Description

A kind of high sealing performance Unloading ball valve

Technical field

The utility model relates to valve technology field, is specifically related to a kind of high sealing performance Unloading ball valve.

Background technique

Ball valve (ballvalve should be stop valve in extra large work and ship domain), is defined as in standard GB/T21465-2008 " valve term ": open-shut device (spheroid) is driven by valve rod, and around the valve that ball valve axis rotates.Also can be used for the regulating and control of fluid, wherein firmly seal between V-type ball valve its V-type ball core and metal seat valve of pile-up welding hard alloy and there is very strong shearing force, be specially adapted to the medium of fibre-bearing, a small solid material etc.And multi-pass ball valve not only can the interflow of control media, shunting and the switching that flows to flexibly on pipeline, also can close arbitrary passage simultaneously and two other passage is connected.This class valve generally should level be installed in the duct.Ball valve is classified: pneumatic ball valve, electric ball valve, manual ball valve.

Ball valve (ballvalve) is come out the 1950's, the develop rapidly of science and technology with ball valve, and updating of production technology and product structure, in the 40 short years, has developed rapidly and become a kind of main valve class.In the country of western industrial prosperity, the use of ball valve is constantly risen year by year.

In China, ball valve is widely used in industries such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, iron and steel, occupies very important status in national economy.It has the action of 90-degree rotation, and faucet body is spheroid, has manhole or passage by its axis.

The valve applied in power plant and steel mill's clinker pipeline system, due to the erosive wear of the corrosion and particulate matter that are subject to high temperature slurries, serious have impact on its working life.As used common valve, both there is the problem such as seal leakage or valve member damage in very short time, and having caused system normally not run.Cast steel spheroid wears no resistance, although adopt chromium plating process, coating and matrix adhesive quality poor, compactness is poor, and uneven coating is even and coating is thinner, and cause spheroid hardness lower, wear-resisting property is poor, and working life is short.

Model utility content

The purpose of this utility model is defect for prior art and deficiency, provides the high sealing performance Unloading ball valve that a kind of structure is simple, reasonable in design, easy to use.

For achieving the above object, the technical solution adopted in the utility model is: it comprises ball valve body, spheroid, lower valve shaft, upper valve shaft, metal seat valve, support, Pneumatic actuator, plug screw of releasing, Sealing, STL overlay cladding; The center of described ball valve body is provided with spheroid, lower valve shaft one end is connected with spheroid respectively with upper valve shaft one end, and on spheroid, contact is provided with metal seat valve, and upper valve shaft top connects Pneumatic actuator, be connected with support between Pneumatic actuator and ball valve body, the bottom of ball valve body is provided with plug screw of releasing; Described spheroid and the sealing surface of metal seat valve are provided with STL overlay cladding, are inlaid with Sealing in STL overlay cladding.

As preferably, described STL overlay cladding adopts cobalt base hard alloy surfacing.

As preferably, described Sealing is fluorine rubber ring.

Principle of the present utility model is: metal seat valve adopts double sealing structure, and when after sealing part abrasion, the metal covering of metal seat valve can replace seal ring, again forms reliable sealing pair, meets usability, extend working life.

After adopting said structure, the beneficial effect that the utility model produces is: high sealing performance Unloading ball valve described in the utility model, setting height(from bottom) is low, volume is little, easy maintenance, long service life, sealability is outstanding, the utility model have structure simple, arrange rationally, the advantage such as fabricating cost is low.

Accompanying drawing explanation

Fig. 1 is the utility model structural drawing;

Fig. 2 is A portion enlarged view in Fig. 1.

Description of reference numerals:

1, ball valve body; 2, spheroid; 3, lower valve shaft; 4, upper valve shaft; 5, metal seat valve; 6, support; 7, Pneumatic actuator; 8, to release plug screw; 9, Sealing; 10, STL overlay cladding.

Embodiment

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

Referring to such as Fig. 1---shown in Fig. 2, this embodiment adopts following technological scheme: it comprises ball valve body 1, spheroid 2, lower valve shaft 3, upper valve shaft 4, metal seat valve 5, support 6, Pneumatic actuator 7, plug screw 8 of releasing, Sealing 9, STL overlay cladding 10; The center of described ball valve body 1 is provided with spheroid 2, lower valve shaft 3 one end is connected with spheroid 2 respectively with upper valve shaft 4 one end, on spheroid 2, contact is provided with metal seat valve 5, upper valve shaft 4 top connects Pneumatic actuator 7, be connected with support 6 between Pneumatic actuator 7 and ball valve body 1, the bottom of ball valve body 1 is provided with plug screw 8 of releasing; Described spheroid 2 is provided with in STL overlay cladding 10, STL overlay cladding 10 with the sealing surface of metal seat valve 5 and is inlaid with Sealing 9.

As preferably, described STL overlay cladding 10 adopts cobalt base hard alloy surfacing.

As preferably, described Sealing 9 is fluorine rubber ring.

The principle of this embodiment is: metal seat valve 5 adopts double sealing structure, and after Sealing 9 weares and teares, the metal covering of metal seat valve 5 can replace seal ring, again forms reliable sealing pair, meets usability, extend working life.

After adopting said structure, the beneficial effect that this embodiment produces is high sealing performance Unloading ball valve described in this embodiment, setting height(from bottom) is low, volume is little, easy maintenance, long service life, sealability is outstanding, this embodiment have structure simple, arrange rationally, the advantage such as fabricating cost is low.

More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a high sealing performance Unloading ball valve, it comprises ball valve body, spheroid, lower valve shaft, upper valve shaft, metal seat valve, support, Pneumatic actuator, plug screw of releasing; The center of described ball valve body is provided with spheroid, lower valve shaft one end is connected with spheroid respectively with upper valve shaft one end, and on spheroid, contact is provided with metal seat valve, and upper valve shaft top connects Pneumatic actuator, be connected with support between Pneumatic actuator and ball valve body, the bottom of ball valve body is provided with plug screw of releasing; It is characterized in that it also comprises Sealing, STL overlay cladding; Described spheroid and the sealing surface of metal seat valve are provided with STL overlay cladding, are inlaid with Sealing in STL overlay cladding.

2. a kind of high sealing performance Unloading ball valve according to claim 1, is characterized in that: described STL overlay cladding adopts cobalt base hard alloy surfacing.

3. a kind of high sealing performance Unloading ball valve according to claim 1, is characterized in that: described Sealing is fluorine rubber ring.