CN218294532U - Top-mounted metal seal fixed ball valve - Google Patents

Abstract

The utility model discloses a fixed ball valve of facial make-up metal seal, which comprises a valve body, valve body internal connection has the spheroid, both ends are provided with clamping device about the spheroid, clamping device is including sealed pad, grip block, stop device and constriction device, sealed pad contacts with the spheroid, the grip block is close to spheroidal one end and sealed pad fixed connection, stop device is close to spheroidal one end and grip block fixed connection, constriction device is close to spheroidal one end and grip block fixed connection. This top-entry metal seal fixed ball valve through being provided with clamping device, makes sealed pad closely laminate with spheroidal outer wall, and the holistic leakproofness of improve equipment guarantees equipment normal use, when needs maintain the ball valve is whole, dismantles the bolt, makes mount pad and valve body separation, rotates the valve rod and makes the spheroid rotate the open position, from the well intracavity take out the spheroid can, easy operation, convenient maintenance.

Description

Top-mounted metal sealing fixed ball valve

Technical Field

The utility model relates to a ball valve technical field specifically is a fixed ball valve of facial make-up metal seal.

Background

The fixed ball valve is a new generation high performance ball valve, is suitable for long distance pipeline and general industrial pipeline, and its strength, safety and resistance to harsh environment are specially considered in design, and is suitable for various corrosive and non-corrosive media. Compared with a floating ball valve, when the ball valve works, acting force generated by fluid pressure in front of the valve on the ball body is completely transmitted to the bearing, the ball body cannot move towards the valve seat, and therefore the valve seat cannot bear overlarge pressure, so that the fixed ball valve is small in torque, small in deformation of the valve seat, stable in sealing performance and long in service life, and is suitable for high-pressure and large-caliber occasions.

The fixed ball valve that has now adopts the welded mode to fix mostly in carrying out the installation, when the ball valve breaks down, can't carry out online dismouting, causes the maintenance difficulty, and the inside spheroid repetitious usage back of valve body, spheroid and the easy wearing and tearing of valve body internal friction cause the leakproofness poor in addition, influence equipment whole use.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a fixed ball valve of facial make-up metal seal has solved the problem that difficulty and spheroid and valve body internal friction lead to the leakproofness poor when the ball valve maintenance.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a fixed ball valve of facial make-up metal seal, includes the valve body, valve body internal connection has the spheroid, both ends are provided with clamping device about the spheroid, clamping device includes:

a seal in contact with the ball;

one end of the clamping block, which is close to the ball body, is fixedly connected with the sealing gasket;

one end of the limiting device, which is close to the ball body, is fixedly connected with the clamping block;

and one end of the contraction device, which is close to the ball body, is fixedly connected with the clamping block.

Preferably, the limiting device comprises a limiting cylinder, a limiting rod and a limiting block, one end, far away from the ball body, of the limiting cylinder is fixedly mounted on the inner wall of the valve body, the limiting rod is inserted into the limiting cylinder and is in sliding connection with the limiting rod, and the limiting rod penetrates through one end of the limiting cylinder and is fixedly connected with the limiting block.

Preferably, the contraction device comprises a contraction barrel, an expansion spring and an expansion link, one end of the contraction barrel, far away from the ball body, is fixedly mounted on the inner wall of the valve body, the expansion link is inserted into the contraction barrel, one end of the expansion link, penetrating through the contraction barrel, is fixedly connected with the expansion spring, and one end of the expansion spring, far away from the expansion link, is fixedly mounted on the inner wall of the contraction barrel.

Preferably, a groove is formed in the upper end of the ball body, a valve rod is inserted in the groove, the upper end of the valve rod penetrates through the valve body, the mounting seat and the worm gear case, and a rotary disc is rotatably connected to the outer wall of the worm gear case.

Preferably, the upper end and the lower end of the clamping block are provided with clamping grooves.

Preferably, the upper end and the lower end of the valve body are both provided with mounting seats, and the valve body is fixedly connected with the mounting seats through bolts.

(III) advantageous effects

The utility model provides a fixed ball valve of facial make-up metal seal. The method has the following beneficial effects:

(1) This upper assembling type metal seal fixed ball valve through being provided with clamping device, when using the bolt to fix valve body and mount pad, the male one end of bolt and grip block to the contact, insert in the draw-in groove of grip block, the draw-in groove is inside to set up to the inclined plane, when the bolt inwards removes, drive the grip block and slide to the spheroid direction, sealed pad closely laminates with spheroidal outer wall, the holistic leakproofness of improve equipment guarantees equipment normal use.

(2) This upper assembling type metal seal fixed ball valve when needs maintain the ball valve wholly, dismantles the bolt, makes mount pad and valve body separation, and inside grip block is no longer hugged closely each other with the spheroid simultaneously, dismantles the back to the mount pad, rotates the valve rod and makes the spheroid rotate to the open position, from the cavity in take out the spheroid can, easy operation, convenient maintenance.

Drawings

FIG. 1 is a schematic view of the overall structure of the device of the present invention;

FIG. 2 is a front sectional structural view of the present invention;

fig. 3 is an enlarged schematic structural view of a portion a in fig. 2 according to the present invention.

In the figure: 1. a valve body; 2. a sphere; 201. a groove; 3. a clamping device; 301. a gasket; 302. a clamping block; 3021. a card slot; 303. a limiting device; 3031. a limiting cylinder; 3032. a limiting rod; 3033. a limiting block; 304. a retractor; 3041. a contracting cylinder; 3042. a tension spring; 3043. a telescopic rod; 4. a valve stem; 5. a mounting base; 6. a worm gear case; 601. a turntable; 7. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a fixed ball valve of upper assembling type metal seal, includes valve body 1, and 1 internally connected of valve body has spheroid 2, and both ends are provided with clamping device 3 about spheroid 2, and clamping device 3 is including sealed the pad 301, and sealed pad 301 contacts with spheroid 2, and sealed one end and grip block 302 fixed connection that spheroid 2 was kept away from to sealed pad 301, and grip block 302 keeps away from one of sealed pad 301 and serves fixedly connected with stop device 303 and constriction device 304.

Particularly, the utility model discloses technical scheme's clamping device 3 is including sealed pad 301, grip block 302, stop device 303 and constriction device 304, and grip block 302 is close to spheroid 2 one end and sets up to the arcwall face, laminates each other with spheroid 2's circular arc outer wall, and stop device 303 and constriction device 304 are provided with two, all sets up the upper and lower both ends at grip block 302, and clamping device 3 is provided with two sets ofly, and the mirror image setting is both ends about spheroid 2.

The utility model discloses an in the embodiment, spheroid 2's lower extreme is provided with down the valve rod, when spheroid 2 rotates, play spacing effect, take place the skew when preventing spheroid 2 from rotating, lead to the unable normal use of equipment, drive valve rod 4 when carousel 601 rotates and rotate, open and close spheroid 2, draw-in groove 3021 seted up at the upper and lower both ends of grip block 302, the one end that draw-in groove 3021 is close to valve rod 4 sets up to the inclined plane, bolt 7 sets up to the arc surface in the one end of inserting mount pad 5 and valve body 1, conveniently cause the extrusion to grip block 302 when bolt 7 inserts, make grip block 302 laminate with spheroid 2's outer wall each other, strengthen the leakproofness.

In this embodiment, the limiting device 303 includes a limiting cylinder 3031, a limiting rod 3032 and a limiting block 3033, one end of the limiting cylinder 3031 far from the ball 2 is fixedly mounted on the inner wall of the valve body 1, the limiting rod 3032 is inserted into the limiting cylinder 3031 and is slidably connected with the limiting rod 3032, the limiting rod 3032 penetrates through one end of the limiting cylinder 3031 and is fixedly connected with the limiting block 3033, the contracting device 304 includes a contracting cylinder 3041, an expanding spring 3042 and a telescopic rod 3043, one end of the contracting cylinder 3041 far from the ball 2 is fixedly mounted on the inner wall of the valve body 1, an expanding rod 3043 is inserted into the contracting cylinder 3041, one end of the expanding rod 3043 penetrating through the contracting cylinder 3041 is fixedly connected with the expanding spring 3042, one end of the expanding spring 3042 far from the expanding rod 3043 is fixedly mounted on the inner wall of the contracting cylinder 3041, a groove 201 is formed in the upper end of the ball 2, a valve rod 4 is inserted into the groove 201, the upper end of the valve rod 4 penetrates through the valve body 1, a mounting seat 5 and a worm-gear box 6, a rotary table is rotatably connected with the clamping groove 3025 formed in the outer wall of the clamping block 302, and two ends of the valve body 3021 are connected with two fixing seats 601.

In order to prevent the clamping block 302 from being inclined when sliding towards the outer wall of the sphere 2 when the clamping block 302 is extruded by the bolt 7, so that the sealing gasket 301 is not tightly attached to the outer wall of the sphere 2, the limiting device 303 is arranged for limiting the sliding track of the clamping block 302, so that the clamping block 302 only slides in the left-right direction, the sealing performance when the clamping block 302 is attached to the outer wall of the sphere 2 is improved, when the bolt 7 cannot be fastened inwards, the sealing gasket 301 is completely attached to the outer wall of the sphere 2, the sealing performance is enhanced, and after long-time use, the sealing gasket 301 can rub against the sphere 2. Cause sealed pad 301 to appear wearing and tearing, sealed pad 301 is the rubber material, has certain toughness, through constantly inwards rotating bolt 7, makes the sealed pad 301 of wearing and tearing inwards press, also can closely laminate the life of improve equipment to 2 outer walls of spheroid.

The utility model discloses an among the embodiment, for the convenience better dismantle between spheroid 2 and the valve body 1, through dismantling the back that finishes to bolt 7, lift mount pad 5 off, through constriction device 304, expanding spring 3042 carries out elastic shrinkage to grip block 302, makes grip block 302 no longer laminate each other with 2 outer walls of spheroid, and the convenience is dismantled spheroid 2, easy operation, conveniently maintains.

When the valve body 2 is in work (or in use), when the valve body 1 and the ball body 2 need to be maintained, the mounting base 5 is separated from the valve body 1 by detaching the bolt 7, the mounting base 5 is detached, when the bolt 7 rotates outwards, the inner clamping block 302 is enabled to be elastically contracted through the expansion spring 3042, the clamping block 302 is enabled not to be attached to the outer wall of the ball body 2 any more, the valve rod 4 is rotated, the ball body 2 is enabled to rotate to the opening position, the ball body 2 can be taken out for maintenance, after the maintenance of the ball body 2 is completed, the ball body 2 and the valve body 1 need to be installed again, the bolt 7 is used for fixing inwards, when the bolt 7 rotates inwards to the valve body 1, the bolt is inserted into the clamping groove 3021 of the clamping block 302 and pressurizes the clamping block 302, the clamping block 302 slides towards the direction of the ball body 2, the limiting device 303 limits the sliding track of the clamping block 302 to prevent the sliding track from being deviated, the sliding track is tightly attached to the outer wall of the ball body 2 through the sealing gasket 301, the valve body 1 and the ball body 2 are fastened completely, and the sealing performance of the inner portion is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a fixed ball valve of facial make-up metal seal, includes valve body (1), its characterized in that: valve body (1) internal connection has spheroid (2), both ends are provided with clamping device (3) about spheroid (2), clamping device (3) include:

a seal (301), said seal (301) being in contact with the ball (2);

the clamping block (302), one end of the clamping block (302) close to the sphere (2) is fixedly connected with the sealing gasket (301);

the limiting device (303), one end of the limiting device (303) close to the sphere (2) is fixedly connected with the clamping block (302);

and one end of the contraction device (304) close to the ball body (2) is fixedly connected with the clamping block (302).

2. The top-loading metal-seal fixed ball valve as claimed in claim 1, wherein: the limiting device (303) comprises a limiting cylinder (3031), a limiting rod (3032) and a limiting block (3033), one end, far away from the ball body (2), of the limiting cylinder (3031) is fixedly mounted on the inner wall of the valve body (1), the limiting rod (3032) is inserted into the limiting cylinder (3031) and is in sliding connection with the limiting rod (3032), and the limiting rod (3032) penetrates through one end of the limiting cylinder (3031) and is fixedly connected with the limiting block (3033).

3. The top-loading metal-seal fixed ball valve as claimed in claim 1, wherein: the retractable device (304) comprises a retractable tube (3041), a retractable spring (3042) and a retractable rod (3043), wherein one end of the retractable tube (3041) far away from the sphere (2) is fixedly arranged on the inner wall of the valve body (1), the retractable rod (3043) is inserted into the retractable tube (3041), the retractable rod (3043) penetrates through one end of the retractable tube (3041) and is fixedly connected with the retractable spring (3042), and one end of the retractable spring (3042) far away from the retractable rod (3043) is fixedly arranged on the inner wall of the retractable tube (3041).

4. The top-loading metal-seal fixed ball valve as claimed in claim 1, wherein: the upper end of spheroid (2) is seted up flutedly (201), it has valve rod (4) to peg graft in recess (201), valve rod (4) upper end runs through valve body (1), mount pad (5) and worm-gear case (6), it is connected with carousel (601) to rotate on worm-gear case (6) outer wall.

5. The top-loading metal-seal fixed ball valve as claimed in claim 1, wherein: clamping grooves (3021) are formed in the upper end and the lower end of the clamping block (302).

6. The top-loading metal-seal fixed ball valve as claimed in claim 1, wherein: the valve is characterized in that mounting seats (5) are arranged at the upper end and the lower end of the valve body (1), and the valve body (1) is fixedly connected with the mounting seats (5) through bolts (7).

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