CN2319639Y

CN2319639Y - Cone core lifting forced hard sealed self-positioning ball valve

Info

Publication number: CN2319639Y
Application number: CN 97234488
Authority: CN
Inventors: 李岳甫
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-07
Filing date: 1997-05-07
Publication date: 1999-05-19
Anticipated expiration: 2007-05-07

Abstract

The utility model relates to a cone core lifting forced hard sealed self-positioning ball valve which is composed of a valve body, a valve core, a valve cover, a valve stem and a bracket. The utility model is characterized in that the valve core 2 is structured with a spherical body which is provided with a sealing cone with proper inclination; the cone of the valve core and the cone of the valve body 1 are sealed in a hard sealing mode; the valve stem is provided with a mechanism which is used for lifting up or pressing down the valve stem and an open and close position fixing device for the valve core; the valve stem and the valve core are connected into integration. The utility model improves the parameters of technical performance, has a wide range of applicable temperature, reduces the moment of an operating force, avoids scuffing and seizure, prevents against working accidents, adapts for various media, different temperature and various pressure grades, has small fluid resistance coefficient, and can be quickly and flexibly opened and closed, being a favorable energy-saving product.

Description

The awl core promotes forces the self-align ball valve of hard sealing

The utility model relates to valve, and particularly a kind of ball valve belongs to a kind of device in the fluid mechanics.

As everyone knows, thousands of kinds of valve kinds in the fluid mechanics, also a lot of with regard to ball valve kind quantity in the industry equipment system, it comes across the sixties, rises abruptly in the 80s and 90s, and the advantage of ball valve is that flow resistance is little, open and close fast, but the defective of its maximum is that the heatproof degree is low, though all exploring high temperature resistant ridge seal ball-valve both at home and abroad in the recent period, all exists to be difficult for sealing and defective such as to kill easily.

The purpose of this utility model discloses a kind of awl core and promotes the self-align ball valve of the hard sealing of pressure, overcome that the current hard airtight quality of ball valve does not reach a standard, the not high defective of soft seal heatproof degree, it is reliable and stable to reach hard sealability, applicable to different medium and various different temperatures grade occasion.

The utility model is to realize like this, with band handle spheroid is the basis processes suitable gradient on the spheroid spool conical seal (contact) face, make and the pairing of the sealing surface of valve body, and grind and coincide, reach hard seal request, when transposition opens and closes, be rotated counterclockwise with handwheel, the poppe tvalve core spheroid breaks away from sealing surface, and drive spheroid transposition, reach the position that opens or closes, the rotation of handwheel clockwise direction makes it under the spool spheroid lock, obtain the identical power of the spool conical surface, realize reliable hard sealing, when under spool spheroid lock, requiring spool to open or close the position, be connected with limit stoper on the valve rod, in the hope of achieving the goal, open and close indicative mark on the valve in addition.

The utility model is described in further detail with accompanying drawing below.

Accompanying drawing 1 is the utility model first example structure schematic representation;

Accompanying drawing 2 is the utility model second example structure schematic representation;

Each other part name is called 1. valve bodies in the accompanying drawing 1,2. spheroid conical surface spool, 3. valve gap, 4. valve rod, 5. connecting bolt, 6. nut, 7. filler, 8. filler gland, 9. Gland, 10. swing bolt, 11. taper pins, 12. ratchet, 13. ratchet snubbers, 14. supports, 15. Stem Mut, 16. handwheels, 17. nameplates, 18. round nut, 19. open and close turning handle, 20. indicators.

Embodiment: 1 the utility model is by valve body with reference to the accompanying drawings, spool, valve gap, valve rod and support are formed, it is characterized in that spool 2 is cone structures that a spheroid adds suitable gradient, conical surface gradient preferably is selected in 10 °, the spool conical surface and valve body 1 conical surface be sealed into hard sealing means, the valve rod 4 that has root and spheroid conical surface spool to fuse directly over the spheroid conical surface spool 2, be upward through the center cylindrical hole of valve gap 3, valve rod above it is provided with one makes mechanism and spool under valve rod lifting or the lock open and close positioning device, described spool opens and closes positioning device, it is made up of ratchet 12 and ratchet snubber 13, ratchet 12 be enclosed within on the valve rod and with the valve rod concentric, fuse with it with taper pin 11, ratchet snubber 13 can only make with being connected of support 14 and self move up and down and can not rotate, described valve rod promotes, mechanism under the lock, promptly above ratchet on the valve rod 12, be provided with handwheel 16 and Stem Mut 15 with the valve rod concentric, the internal spiral of Stem Mut 15 and the spiral of valve rod mesh, nut 15 lower end outer rims have boss, after passing from bottom to top, support valve rod orifice ring 14 passes handwheel 16 axle center holes again, by round nut 18 with handwheel 16 axial restraints, in the middle of handwheel 16 and Stem Mut 15 are clamped in support valve rod orifice ring 14 like this, make handwheel 16 and nut 15 can only rotate and to move up and down, be connected as a single entity, rotating handwheel moves up and down by the hurricane band ovable valve stem, the lifting of valve rod, mechanism can adopt the leverage form that is connected on the valve rod to finish (Fig. 2) again under the lock, valve stem tip is connected with a keying turning handle 19 and indicator 20, in the big use occasion of pressure flow, there is one to be the cylindrical body in the center of circle on the sphere of spheroid conical surface spool bottom with the spheroid vertical axis, the corresponding cooperation sphere of valve body 1 is provided with cylindrical pit, in the less use occasion of pressure flow, spheroid conical surface spool bottom is simple spherical surface body, the filler 7 that seals is arranged on bar and hole fitting surface during center cylindrical hole that valve rod 4 passes valve gap 3, there is filler gland 8 and the Gland 9 with the valve rod concentric filler 7 tops, and Gland is provided with and just changes the swing bolt 10 that filler can be pushed down Gland again.It is reliable and stable to have solved hard sealability according to above-mentioned the utility model that makes, and can be used for various different temperatures grades, from-196 ℃～1600 ℃, also applicable to different medium.

The utility model is compared with existing ball valve and has been improved the technical performance parameter, and the Applicable temperature scope more Extensively, operational torque reduces, and has avoided scratch to kill, Accident prevention, it absorbed ball valve, plug valve, The advantage of gate valve, stop valve is avoided the shortcoming of above-mentioned valve kind, can have the new varieties of serial system of one's own, Arranged wide development prospect, and it is applicable to various media, temperature, pressure rating, and the fluid resistance Force coefficient is very little, opens and closes fast and flexible, is a kind of good energy-conserving product.

Claims

1. one kind by valve body, spool, valve gap, the awl core that valve rod and support are formed promotes forces the self-align ball valve of hard sealing, it is characterized in that spool 2 structures are spheroid conical surfaces that and valve body constitute hard sealing means, a valve rod 4 that fuses with spool is arranged directly over the spool 2 of the spheroid conical surface, valve rod 4 is upward through the center cylindrical hole of valve gap 3, valve rod above it is provided with one makes mechanism and spool under valve rod lifting or the lock open and close positioning device, described spool opens and closes positioning device, it is made up of ratchet 12 and ratchet snubber 13, ratchet 12 be enclosed within on the valve rod and with the valve rod concentric, with taper pin 11 the ratchet valve rod is fused, ratchet snubber 13 is connected support 14 back ratchets and cooperates with ratchet, described valve rod promotes, mechanism under the lock, promptly above ratchet 12, be provided with handwheel 16 and Stem Mut 15 with the valve rod concentric, Stem Mut 15 be enclosed within on the valve rod and with the valve rod helical toothing, Stem Mut 15 lower end outer rims have boss, after passing from bottom to top, the valve rod orifice ring of support 14 passes handwheel 16 axle center holes again, Stem Mut 15 tops have handwheel 16 axial restraints and the round nut 18 that is connected as a single entity, the lifting of valve rod, mechanism can adopt the leverage that is connected valve stem tip again under the lock, and valve stem tip is connected with a keying turning handle 19 and indicator 20.

2. awl core according to claim 1 promotes forces the self-align ball valve of hard sealing, it is characterized in that having one to be the cylindrical body in the center of circle on the sphere of spheroid conical surface spool bottom with the spheroid vertical axis, the corresponding cooperation sphere of valve body 1 is provided with cylindrical pit, and perhaps spheroid conical surface spool bottom is simple spherical surface body.

3. awl core according to claim 1 and 2 promotes forces the self-align ball valve of hard sealing, the filler 7 that seals is arranged on bar and hole fitting surface when it is characterized in that center cylindrical hole that described valve rod 4 passes valve gap 3, there is filler gland 8 and the Gland 9 with the valve rod concentric filler 7 tops, and Gland is provided with is convenient to change the swing bolt 10 that filler can be pushed down Gland again.

4. awl core according to claim 1 promotes forces the self-align ball valve of hard sealing, and the gradient that it is characterized in that the spool ball seal conical surface is at 10 °.