CN209115692U - Refractory metal ring structure spiral valve - Google Patents

Abstract

Refractory metal ring structure spiral valve, is related to spiral valve arrangement, and in particular to rotation ball valve sealing structure.Including Electric Actuator, upper valve rod, valve body, ball valve core and lower valve rod, ball valve core is set in valve body, and ball valve core is installed on valve body by upper valve rod and lower valve rod respectively up and down, and upper valve rod upper end connects Electric Actuator；Be equipped at valve body interior side port with the cooperation of ball valve core can travelling valve seat, can the protrusion of travelling valve seat outer rim horizontally slip cooperation with the formation of valve body inboard groove；Can the raised left and right edges of travelling valve seat outer rim have right angle annular groove, two right angles annular grooves outside is respectively arranged with positive pressure medium pushing becket and reversely pressure medium and pushes becket, presses medium pushing becket and reversed press to be provided with high temperature resistant expansive graphite sealing ring on the inside of medium pushing becket positive.It solves existing very stiff and demanding spiral valve to seal using room temperature rubber o-ring, O-ring seals are easy to damage under high temperature, the problem of losing leakproofness.

Description

Refractory metal ring structure spiral valve

Technical field

The utility model relates to spiral valve arrangements, and in particular to rotation ball valve sealing structure.

Background technique

Spiral valve has both the function and advantage of butterfly valve, semisphere valve, gate valve and shut-off valve simultaneously, but have itself completely with it is many not Same power and advantage.Small in size, light-weight, transportation, installation, maintenance are overhauled convenient, reliable for operation.Spiral valve is sealing It can be needed to use space plasma spraying, ether laser splash, vacuum protection according to different hardness on two secondary sealing surfaces It seeps the advanced technologies such as multiple built-up welding and forms martensitic stain less steel, austenitic stainless steel, hard alloy, cermet, diamond Constant gradient functional material, energy automatic alignment center, and can automatic surpassed distance compensation abrasion.Medium in spiral valve is made full use of when closing Energy, be subject to high seal pressure automatically, high hard sealing pair made to reach reliable zero leakage.Moment closing, moment are opened close Without friction between envelope is secondary.It is short, small in size to have the characteristics that the structure of butterfly valve similar to butterfly valve for its main structure of spiral valve, thus can make Make the valve of super-large diameter, super large caliber.The very stiff and demanding spiral valve of existing market is sealed using room temperature rubber o-ring, the spiral Valve only uses at normal temperature, and O-ring seals are easy to damage under high temperature, loses leakproofness.

Utility model content

The utility model provides a kind of refractory metal ring structure spiral valve, it solves existing very stiff and demanding spiral valve and adopts It is sealed with room temperature rubber o-ring, O-ring seals are easy to damage under high temperature, the problem of losing leakproofness.

To solve the above problems, the utility model adopts the following technical solution: refractory metal ring structure spiral valve, including Electric Actuator, upper valve rod, valve body, ball valve core and lower valve rod, ball valve core are set in valve body, and ball valve core is up and down respectively by upper Valve rod and lower valve rod are installed on valve body, and upper valve rod upper end connects Electric Actuator；It is equipped at valve body interior side port and ball Spool cooperation can travelling valve seat, can the protrusion of travelling valve seat outer rim horizontally slip cooperation with the formation of valve body inboard groove；It can swim The raised left and right edges of dynamic valve seat outer rim have right angle annular groove, and positive pressure medium is respectively arranged on the outside of two right angle annular grooves and pushes gold Belong to ring and reversed pressure medium pushes becket, pushes becket in forward direction pressure medium and reversed pressure medium is pushed and set on the inside of becket It is equipped with high temperature resistant expansive graphite sealing ring.

The refractory metal ring structure spiral valve of the utility model, design have elevated-temperature seal can travelling valve seat, by itself Fluid medium pressure acts on positive pressure and reversed pressure medium pushes becket, and squeezing can expansive graphite sealing in travelling valve seat Ring realizes high temperature resistant two way seal function.The utility model is sealed using expansive graphite sealing ring, and passes through positive pressure and reversed Medium is pressed to push becket and squeezing action, leakproofness can be kept good at high temperature.The utility model Applicable temperature is 425 ℃-620℃；It is used suitable for chemical industry, papermaking, petroleum industry conveying corrosive media.

Detailed description of the invention

Fig. 1 is the utility model structure diagram；

Fig. 2 is partial enlarged view at the I of Fig. 1.

Symbol description in figure: Electric Actuator 1, upper valve rod 2, valve body 3, ball valve core 4, pressure plate loop 5, lower valve rod 6, forward direction pressure Medium pushes becket 7, and reversed that medium is pressed to push becket 8, high temperature resistant expansive graphite sealing ring 9 can travelling valve seat 10.

Specific embodiment

The utility model is described in detail with optimal embodiment below.

As shown in Figs. 1-2, refractory metal ring structure spiral valve, including Electric Actuator 1, upper valve rod 2, valve body 3, ball valve Core 4 and lower valve rod 6, ball valve core 4 are set in valve body 3, and about 4 ball valve core is installed on valve by upper valve rod 2 and lower valve rod 6 respectively On body 3,2 upper end of upper valve rod connects Electric Actuator 1；It is provided at 3 interior side port of valve body and moves about with what ball valve core cooperated Valve seat 10, can the protrusion of 10 outer rim of travelling valve seat horizontally slip cooperation with the formation of 3 inboard groove of valve body；Can be outside travelling valve seat 10 Side is provided with pressure plate loop 5, and pressure plate loop 5 is stuck in can be on the shoulder slot of 10 outer ledge of travelling valve seat, 5 company of being bolted of pressure plate loop It is connected on valve body 3；Can the raised left and right edges of 10 outer rim of travelling valve seat have a right angle annular groove, be respectively set on the outside of two right angle annular grooves Have that positive pressure medium pushes becket 7 and reversed pressure medium pushes becket 8, pushes becket 7 and reversed in forward direction pressure medium Pressure medium pushes and is provided with high temperature resistant expansive graphite sealing ring 9 on the inside of becket 8.

Claims (2)

1. refractory metal ring structure spiral valve, including Electric Actuator, upper valve rod, valve body, ball valve core and lower valve rod, ball valve core It is set in valve body, ball valve core is installed on valve body by upper valve rod and lower valve rod respectively up and down, and the connection of upper valve rod upper end is electronic Actuator；It is characterized in that, be equipped at valve body interior side port with the cooperation of ball valve core can travelling valve seat, can be outside travelling valve seat The protrusion of edge forms the cooperation that horizontally slips with valve body inboard groove；Can the raised left and right edges of travelling valve seat outer rim have right angle ring Slot, two right angles annular grooves outside is respectively arranged with positive pressure medium pushing becket and reversely pressure medium pushes becket, just Becket is pushed to pressure medium and reversed pressure medium pushes and is provided with high temperature resistant expansive graphite sealing ring on the inside of becket.

2. refractory metal ring structure spiral valve as described in claim 1, which is characterized in that pressure can be provided on the outside of travelling valve seat Plate circle, pressure plate loop is stuck in can be on the shoulder slot of travelling valve seat outer ledge, and pressure plate loop is bolted to connection on valve body.