CN209909183U - Metal hard seal butterfly valve - Google Patents

Abstract

The utility model discloses a metal hard seal butterfly valve, including valve body and butterfly plate, the valve body is inside cavity and both ends open-ended spherical structure, valve body inside fit installation can the pivoted butterfly plate, the butterfly plate includes circular shape intermediate bottom, intermediate bottom's periphery sets up spherical plate of spherical shape, the surface of the spherical plate of intermediate bottom both sides sets up the assembly respectively and leads to the groove, the assembly leads to the closing plate of inslot portion slidable mounting U-shaped structure, the blind end of closing plate and the inner wall contact installation of valve body, intermediate bottom is inside along the radial direction setting shaft hole, shaft hole inside fit installation actuating mechanism, this metal hard seal butterfly valve adopts the inside closing plate that has the compensation function that sets up of butterfly plate, when the friction loss appears, can compensate automatically, guarantees sealed vice leakproofness.

Description

Metal hard seal butterfly valve

Technical Field

The utility model relates to the technical field of valves, specifically a metal butterfly valve sealed firmly.

Background

The butterfly valve is used as common valve equipment and has larger usage amount in industrial and living equipment, the existing butterfly valve is mainly divided into a soft seal and a hard seal, a seal pair of the soft seal adopts a nonmetal soft material to match a metal hard material or a nonmetal soft material, in the using process, the non-metal soft material contacts with the internal circulating medium for a long time, so that the material is aged, and the problems of abrasion and the like exist in the opening and closing process of the valve, the sealing degree of the sealing pair is greatly influenced, the sealing pair of the hard seal adopts the hard metal material to be matched with the hard metal material, when the hard metal materials are matched with each other, in order to ensure the sealing degree, larger fitting force is needed, so that larger friction loss exists in the opening and closing process of the valve, however, the existing hard seal butterfly valve has no automatic compensation capability, and the sealing degree of the valve is sharply reduced after friction loss occurs.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a metal butterfly valve sealed firmly, adopt the inside closing plate that has the compensation function that sets up of butterfly plate, when the friction loss appears, can compensate automatically, guarantee sealed vice leakproofness, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a metal butterfly valve sealed firmly, includes valve body and butterfly plate, the valve body is inside cavity and both ends open-ended spherical structure, valve body fit installation can pivoted butterfly plate, the butterfly plate includes circular shape intermediate bottom, intermediate bottom's periphery sets up spherical plate of spherical shape, the surface of the spherical plate of intermediate bottom both sides sets up the assembly respectively and leads to the groove, the assembly leads to the closing plate of inslot portion slidable mounting U-shaped structure, the blind end of closing plate and the inner wall contact installation of valve body, intermediate bottom is inside along radial direction setting shaft hole, shaft hole fit installation actuating mechanism inside.

As a preferred technical scheme of the utility model, the butterfly plate is planar structure along the both ends of axis of rotation length direction, valve body inner space structure is unanimous with the butterfly plate, two plane tip of spherical plate set up the spout, the both ends of closing plate set up the extension plate respectively, extension plate slidable mounting is inside the spout, the inside spacing groove that sets up of spout, the extension plate below sets up the stopper, stopper slidable mounting is inside the spacing groove, through the structural design of spacing groove and stopper, restricts the compensation displacement length of closing plate, avoids closing plate and spherical plate to break away from.

As a preferred technical scheme of the utility model, the assembly leads to the groove and is the ladder groove of both sides intercommunication, and assembles the inside opening size that leads to the groove and be greater than outside opening size, the both sides of closing plate set up the limiting plate respectively perpendicularly, set up the elastic seal body between the ladder face in limiting plate and the ladder groove, through setting up the elastic seal body, increase the sealing capacity between closing plate and the spherical board.

As a preferred technical scheme of the utility model, actuating mechanism includes the center pin, the center pin is through the shaft hole cooperation installation of parallel key and butterfly plate, the tip cooperation installation worm wheel of center pin, the outside meshing installation worm of worm wheel, the worm both ends are passed through the bearing pair and are rotated the installation with the valve body, and the input shaft of worm is connected with external power input device, carry out power transmission through the worm gear, utilize worm gear's reverse auto-lock ability, effectively guarantee the stability of inside butterfly plate, avoid the reverse butterfly plate that drives of inside circulation medium to open or close.

Compared with the prior art, the beneficial effects of the utility model are that: this metal butterfly valve sealed firmly adopts the inside closing plate that sets up of butterfly plate, and closing plate slidable mounting is leading to the inslot portion in the assembly, the opening that the inslot portion was led to in the assembly is direct to be put through with the pipeline, pipeline internal pressure direct action is at the internal surface of closing plate, promote the closing plate and outwards remove, make closing plate and valve body inner wall closely laminate, guarantee the leakproofness, when friction loss appears, the closing plate can closely laminate with the valve body inner wall under the pressure effect equally, guarantee sealed vice degree of tightness, thereby the life of extension valve.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the assembly of the butterfly plate and the driving mechanism of the present invention;

FIG. 3 is a schematic view of the butterfly plate structure of the present invention;

FIG. 4 is a schematic view of a sealing plate of the present invention;

FIG. 5 is a front view of the present invention;

fig. 6 is a cross-sectional view of the present invention at a;

fig. 7 is a cross-sectional view of the utility model at the position B;

fig. 8 is an enlarged view of the position C of the present invention.

In the figure: 1 valve body, 2 butterfly plate, 201 middle partition plate, 202 sealing plate, 203 assembling through groove, 204 spherical plate, 205 elastic sealing body, 3 driving mechanism, 301 worm and 302 central shaft.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: the utility model provides a metal butterfly valve that seals firmly, including valve body 1 and butterfly plate 2, valve body 1 is inside cavity and both ends open-ended spherical structure, 1 inside cooperation installation of valve body can pivoted butterfly plate 2, butterfly plate 2 includes circular shape intermediate bottom 201, the periphery of intermediate bottom 201 sets up spherical plate 204 of spherical shape, the surface of spherical plate 204 of intermediate bottom 201 both sides sets up the assembly through groove 203 respectively, the inside sliding installation U-shaped structure's of assembly through groove 203 closing plate 202, the blind end of closing plate 202 and the inner wall contact installation of valve body 1, the intermediate bottom 201 is inside to set up the shaft hole along radial direction, shaft hole inside cooperation installation actuating mechanism 3.

Butterfly plate 2 is planar structure along the both ends of axis of rotation length direction, 1 inner space structure of valve body is unanimous with butterfly plate 2, two plane tip of spherical plate 204 set up the spout, the both ends of closing plate 202 set up the extension plate respectively, extension plate slidable mounting is inside the spout, the inside spacing groove that sets up of spout, the extension plate below sets up the stopper, stopper slidable mounting is inside the spacing groove, structural design through spacing groove and stopper, the compensation displacement length to closing plate 202 limits, avoid closing plate 202 and spherical plate 204 to break away from.

The assembly through groove 203 is a stepped groove communicated with two sides, the size of an inner opening of the assembly through groove 203 is larger than that of an outer opening, the two sides of the sealing plate 202 are respectively and vertically provided with a limiting plate, an elastic sealing body 205 is arranged between the limiting plate and a stepped surface of the stepped groove, and the sealing capacity between the sealing plate 202 and the spherical plate 204 is improved by arranging the elastic sealing body 205.

Actuating mechanism 3 includes center pin 302, center pin 302 is through the shaft hole cooperation installation of flat key and butterfly plate 2, the tip cooperation installation worm wheel of center pin 302, worm wheel outside meshing installation worm 301, worm 301 both ends are passed through the bearing pair and are rotated the installation with valve body 1, and the input shaft of worm 301 is connected with external power input device, carry out power transmission through the worm gear, utilize the reverse auto-lock ability of worm gear, effectively guarantee the stability of inside butterfly plate 2, avoid inside circulation medium reverse drive butterfly plate 2 to open or close.

When in use: the butterfly valve is connected in series inside the pipeline, when the butterfly valve is in a closed state, the medium inside the high-pressure end applies pressure to the inner walls of the middle partition plate 201 and the spherical plate 204 and the inner wall of the sealing plate 202 to push the sealing plate 202 to move outwards to be tightly attached to the inner wall of the valve body 1, and therefore the sealing degree is guaranteed.

When the valve is opened, the valve body 1 is driven by rotating the worm 301, and the central shaft 302 and the butterfly plate 2 are driven to rotate together through worm and worm gear transmission, so that the interior of the valve body 1 is communicated.

The utility model discloses an inside closing plate 202 that sets up of butterfly plate 2, and closing plate 202 slidable mounting is inside the logical groove 203 of assembly, the inside opening of the logical groove 203 of assembly is direct and the pipeline switch-on, pipeline internal pressure direct action is at the internal surface of closing plate 202, promote the outside removal of closing plate 202, make closing plate 202 closely laminate with 1 inner wall of valve body, guarantee the leakproofness, when the friction loss appears, closing plate 202 can closely laminate with 1 inner wall of valve body under the pressure effect equally, guarantee sealed vice degree of tightness, thereby the life of extension valve.

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 (4)

1. The utility model provides a metal seals butterfly valve firmly, includes valve body (1) and butterfly plate (2), its characterized in that: the butterfly valve is characterized in that the valve body (1) is of a hollow spherical structure with two open ends, the butterfly plate (2) capable of rotating is installed in the valve body (1) in an internal matching mode, the butterfly plate (2) comprises a circular middle partition plate (201), the circumferential surface of the middle partition plate (201) is provided with a spherical plate (204) in a spherical shape, the surfaces of the spherical plates (204) on two sides of the middle partition plate (201) are respectively provided with an assembling through groove (203), the assembling through groove (203) is internally provided with a sealing plate (202) in a U-shaped structure in a sliding mode, the closed end of the sealing plate (202) is installed in contact with the inner wall of the valve body (1), a shaft hole is formed in the middle partition plate (201) in a radial direction, and.

2. The metal-to-metal butterfly valve of claim 1, wherein: the butterfly plate (2) are planar structures along the two ends of the length direction of the rotating axis, the internal space structure of the valve body (1) is consistent with that of the butterfly plate (2), the two planar end parts of the spherical plate (204) are provided with sliding grooves, the two ends of the sealing plate (202) are respectively provided with an extension plate, the extension plates are slidably mounted inside the sliding grooves, limiting grooves are formed inside the sliding grooves, limiting blocks are arranged below the extension plates, and the limiting blocks are slidably mounted inside the limiting grooves.

3. The metal-to-metal butterfly valve of claim 1, wherein: the assembly is led to groove (203) and is the ladder groove of both sides intercommunication, and assembles and lead to the inside opening size of groove (203) and be greater than outside opening size, the both sides of closing plate (202) set up the limiting plate perpendicularly respectively, set up elastic sealing body (205) between the ladder face in limiting plate and ladder groove.

4. The metal hard seal butterfly valve of any one of claims 1-3, wherein: actuating mechanism (3) are including center pin (302), center pin (302) are through the shaft hole cooperation installation of flat key and butterfly plate (2), the tip cooperation installation worm wheel of center pin (302), worm wheel external toothing installation worm (301), worm (301) both ends are passed through the bearing pair and are rotated the installation with valve body (1), and the input shaft and the external power input equipment of worm (301) are connected.

Images