CN212338215U

CN212338215U - Compound seal structure of two-way pressure-bearing fire control signal butterfly valve

Info

Publication number: CN212338215U
Application number: CN202020819895.2U
Authority: CN
Inventors: 田宪平
Original assignee: Tianjin Ruixin Tongda Valve Co ltd
Current assignee: Tianjin Ruixin Tongda Valve Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-01-12
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a compound seal structure of two-way pressure-bearing fire control signal butterfly valve, including valve body and valve rod, the top of valve body and the surface swing joint of valve rod, swing joint has the butterfly plate between the top of valve body inner wall and the bottom, and the fixed surface of butterfly plate is connected with sealing mechanism, sealing mechanism includes elastic sealing circle and metal seal circle, the dovetail with elastic sealing circle looks adaptation is seted up to the surface of butterfly plate, the bottom fixedly connected with spring of dovetail inner wall, the utility model relates to a butterfly valve technical field. This compound seal structure of two-way pressure-bearing fire control signal butterfly valve includes elastic sealing ring and metal seal circle through sealing mechanism, combines elastic sealing ring and metal seal circle to use, improves this sealing mechanism's resistance to deformation ability, and under the effect of spring for sealing mechanism still can laminate mutually with the valve body after long-time the use, has prolonged sealing mechanism's life.

Description

Compound seal structure of two-way pressure-bearing fire control signal butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a compound seal structure of two-way pressure-bearing fire control signal butterfly valve.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve with a closing part (valve clack or butterfly plate) which is a disc and rotates around a valve shaft to achieve opening and closing, the valve can be used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and mainly plays a role in cutting off and throttling on a pipeline, the butterfly valve opening and closing part is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in a valve body so as to achieve the purpose of opening, closing or regulating, the butterfly valve has the advantages of simple structure, small volume, light weight, material consumption saving, small installation size, small driving moment, simple and convenient operation, rapidness, good flow regulating function and closing sealing property, and is one of the fastest valve varieties developed in recent decades, butterfly valves are widely used, and their variety and number of uses continue to expand, and have been developed toward high temperature, high pressure, large caliber, high sealing, long life, excellent regulation characteristics, and one-valve multiple functions.

At present, a sealing ring is generally arranged between a butterfly plate and the inner wall of a valve body of a bidirectional pressure-bearing fire-fighting signal butterfly valve, so that the butterfly plate is difficult to leak, but the sealing ring is influenced by high temperature and high pressure in the using process, the aging deformation of the sealing ring is accelerated, the sealing effect is poor, the butterfly plate needs to be frequently replaced, and the butterfly plate is inconvenient to operate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a compound seal structure of two-way pressure-bearing fire control signal butterfly valve has solved the sealing washer and has received the highly compressed influence of high temperature at the in-process that uses for the ageing deformation of sealing washer, it is relatively poor to lead to sealed effect, and needs frequently to change, the inconvenient problem of operation.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a composite sealing structure of a bidirectional pressure-bearing fire-fighting signal butterfly valve comprises a valve body and a valve rod, wherein the top of the valve body is movably connected with the surface of the valve rod, a butterfly plate is movably connected between the top and the bottom of the inner wall of the valve body, and a sealing mechanism is fixedly connected to the outer surface of the butterfly plate;

sealing mechanism includes elastic seal circle and metal seal circle, the dovetail with elastic seal circle looks adaptation is seted up to the surface of butterfly plate, the bottom fixedly connected with spring of dovetail inner wall, the one end that the dovetail inner wall was kept away from to the spring and the inner wall fixed connection of elastic seal circle, the equal fixedly connected with in both sides of elastic seal circle bottom and the lug of dovetail looks adaptation, one side that the spring was kept away from to the elastic seal circle and the inner wall fixed connection of metal seal circle, one side that the elastic seal circle was kept away from to the metal seal circle and the inner wall swing joint of valve body.

Preferably, the bottom end of the valve rod penetrates through the valve body and the butterfly plate in sequence and extends to the inner portion of the butterfly plate, and one end, far away from the valve body, of the valve rod is fixedly connected with a shell.

Preferably, the right side of shell is rotated and is connected with the axis of rotation, the one end fixedly connected with hand wheel that the shell was kept away from to the axis of rotation.

Preferably, the right side fixedly connected with annular plate of shell, the one end that the hand wheel was kept away from to the axis of rotation runs through annular plate and shell in proper order and extends to the inside of shell.

Preferably, a through hole matched with the rotating shaft is formed in the annular plate, and a nut is movably connected to the top of the annular plate.

Preferably, the bottom of the nut is fixedly connected with a bolt, and the bottom end of the bolt sequentially penetrates through the rotating shaft and the annular plate through the fixing hole and extends to the outside of the annular plate.

Preferably, the bolt extends to the surface of the outer one end of the annular plate and is located the bottom threaded connection of annular plate and has a nut, the equal fixedly connected with ring flange in front and the back of valve body, and the surface of ring flange sets up threaded hole.

Advantageous effects

The utility model provides a compound seal structure of two-way pressure-bearing fire control signal butterfly valve. Compared with the prior art, the method has the following beneficial effects:

(1) the composite sealing structure of the bidirectional pressure-bearing fire-fighting signal butterfly valve comprises an elastic sealing ring and a metal sealing ring through a sealing mechanism, a dovetail groove matched with the elastic sealing ring is formed in the outer surface of a butterfly plate, a spring is fixedly connected to the bottom of the inner wall of the dovetail groove, one end, away from the inner wall of the dovetail groove, of the spring is fixedly connected with the inner wall of the elastic sealing ring, two sides of the bottom of the elastic sealing ring are fixedly connected with convex blocks matched with the dovetail groove, one side, away from the spring, of the elastic sealing ring is fixedly connected with the inner wall of the metal sealing ring, one side, away from the elastic sealing ring, of the metal sealing ring is movably connected with the inner wall of a valve, and under the effect of spring for sealing mechanism still can laminate mutually with the valve body after long-time the use, has prolonged sealing mechanism's life.

(2) This compound seal structure of two-way pressure-bearing fire control signal butterfly valve, right side fixedly connected with annular plate through the shell, the one end that the hand wheel was kept away from to the axis of rotation runs through annular plate and shell in proper order and extends to the inside of shell, the through-hole with the pivot axle adaptation is seted up to the inside of annular plate, the top swing joint of annular plate has the nut, the bottom fixedly connected with bolt of nut, the bottom of bolt runs through axis of rotation and annular plate in proper order and extends to the outside of annular plate through the fixed orifices, the bottom threaded connection that the bolt extends to the surface of the outside one end of annular plate and is located the annular plate has the nut, after closing the butterfly plate, insert the axis of rotation with the bolt, fix the bolt through the nut, thereby fix the hand wheel, prevent carelessly to open the butterfly plate.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a side sectional view of the valve body structure of the present invention;

FIG. 3 is an enlarged view of a portion of the substrate of FIG. 2;

fig. 4 is a perspective view of the structure of the elastic sealing ring and the metal sealing ring of the present invention;

fig. 5 is a cross-sectional view of the ring plate structure of the present invention.

In the figure: 1 valve body, 2 valve rods, 3 butterfly plates, 4 sealing mechanisms, 41 elastic sealing rings, 42 metal sealing rings, 43 dovetail grooves, 44 springs, 45 convex blocks, 5 shells, 6 rotating shafts, 7 hand wheels, 8 annular plates, 9 through holes, 10 screw caps, 11 bolts, 12 nuts, 13 flange plates and 14 threaded holes.

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. 1-5, the present invention provides a technical solution: a composite sealing structure of a bidirectional pressure-bearing fire-fighting signal butterfly valve comprises a valve body 1 and a valve rod 2, the working principle between the valve rod 2 and a butterfly plate 3 is the content known by persons in the prior art, and will not be described in detail herein, the bottom end of the valve rod 2 sequentially penetrates through the valve body 1 and the butterfly plate 3 and extends to the inside of the butterfly plate 3, one end of the valve rod 2 far away from the valve body 1 is fixedly connected with a shell 5, the right side of the shell 5 is fixedly connected with a ring plate 8, the inside of the ring plate 8 is provided with a through hole 9 matched with a rotating shaft 6, the top of the ring plate 8 is movably connected with a nut 10, the bottom of the nut 10 is fixedly connected with a bolt 11, the bolt 11 is fixed through a nut 12, so as to fix a hand wheel 7 and prevent the butterfly plate 3 from being opened carelessly in the using process, the bolt 11 extends to the surface of one end outside, the front and the back of the valve body 1 are fixedly connected with flange plates 13, the surface of the flange plate 13 is provided with threaded holes 14, the flange plate 13 is connected with an external pipeline through the threaded holes 14, the bottom end of a bolt 11 sequentially penetrates through the rotating shaft 6 and the annular plate 8 through a fixing hole and extends to the outside of the annular plate 8, one end of the rotating shaft 6, far away from the hand wheel 7, sequentially penetrates through the annular plate 8 and the shell 5 and extends to the inside of the shell 5, the right side of the shell 5 is rotatably connected with the rotating shaft 6, one end of the rotating shaft 6, far away from the shell 5, is fixedly connected with the hand wheel 7, the top of the valve body 1 is movably connected with the surface of the valve rod 2, a butterfly plate 3 is movably connected between the top and the bottom of the inner wall of the valve body 1, the outer surface of the butterfly plate 3, elastic seal 41 is made for the polyurethane material, the dovetail 43 with elastic seal 41 looks adaptation is seted up to the surface of butterfly plate 3, the bottom fixedly connected with spring 44 of dovetail 43 inner wall, spring 44 can be changed, guarantee elasticity, the one end that dovetail 43 inner wall was kept away from to spring 44 is connected with elastic seal 41's inner wall fixed connection, the equal fixedly connected with in both sides of elastic seal 41 bottom and the lug 45 of dovetail 43 looks adaptation, elastic seal 41 keeps away from one side of spring 44 and the inner wall fixed connection of metal seal 42, one side that elastic seal 41 was kept away from to metal seal 42 and the inner wall swing joint of valve body 1.

When in use, the elastic sealing ring 41 is arranged around the butterfly plate 3, the metal sealing ring 42 is arranged on the periphery of the elastic sealing ring 41, the butterfly plate 3 and the valve body 1 are sealed, meanwhile, the elastic sealing ring 41 extrudes the spring 44 in the dovetail groove 43, the spring 44 is stressed to rebound, under the action of the spring 44, the elastic sealing ring 41 and the metal sealing ring 42 are attached to the inner wall of the valve body 1 more tightly, the sealing performance is better, the rotating shaft 6 is driven to rotate through the hand wheel 7, the butterfly plate 3 is closed, the bolt 11 passes through the annular plate 8 and the rotating shaft 6 in sequence, the bolt 11 is screwed out to the bottom of the annular plate 8, the bottom of the bolt 11 is fixed through the nut 12, thereby fixing the rotation axis 6, preventing the rotation axis 6 from rotating in the use process, causing the butterfly plate 3 to open, being connected with the external pipeline through the flange plate 13 and the threaded hole 14.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

1. The utility model provides a compound seal structure of two-way pressure-bearing fire control signal butterfly valve, includes valve body (1) and valve rod (2), the top of valve body (1) and the surperficial swing joint of valve rod (2), its characterized in that: a butterfly plate (3) is movably connected between the top and the bottom of the inner wall of the valve body (1), and a sealing mechanism (4) is fixedly connected to the outer surface of the butterfly plate (3);

sealing mechanism (4) include elastic sealing ring (41) and metal seal circle (42), dovetail (43) with elastic sealing ring (41) looks adaptation are seted up to the surface of butterfly plate (3), bottom fixedly connected with spring (44) of dovetail (43) inner wall, the one end of dovetail (43) inner wall and the inner wall fixed connection of elastic sealing ring (41) are kept away from in spring (44), the equal fixedly connected with in both sides of elastic sealing ring (41) bottom and lug (45) of dovetail (43) looks adaptation, the inner wall fixed connection of one side and metal seal circle (42) of spring (44) are kept away from in elastic sealing ring (41), the inner wall swing joint of one side and valve body (1) of elastic sealing ring (41) is kept away from in metal seal circle (42).

2. The compound sealing structure of the bidirectional pressure-bearing fire signal butterfly valve according to claim 1, characterized in that: the bottom of valve rod (2) runs through valve body (1) and butterfly plate (3) in proper order and extends to the inside of butterfly plate (3), the one end fixedly connected with shell (5) of valve body (1) are kept away from in valve rod (2).

3. The compound sealing structure of the bidirectional pressure-bearing fire signal butterfly valve according to claim 2, characterized in that: the right side of shell (5) is rotated and is connected with axis of rotation (6), the one end fixedly connected with hand wheel (7) of shell (5) are kept away from in axis of rotation (6).

4. The composite sealing structure of the bidirectional pressure-bearing fire signal butterfly valve according to claim 3, characterized in that: the right side fixedly connected with annular plate (8) of shell (5), the one end that hand wheel (7) were kept away from in axis of rotation (6) runs through annular plate (8) and shell (5) in proper order and extends to the inside of shell (5).

5. The composite sealing structure of the bidirectional pressure-bearing fire signal butterfly valve according to claim 4, characterized in that: the through hole (9) of adaptation with axis of rotation (6) is seted up to the inside of annular plate (8), the top swing joint of annular plate (8) has nut (10).

6. The composite sealing structure of the bidirectional pressure-bearing fire signal butterfly valve according to claim 5, characterized in that: the bottom fixedly connected with bolt (11) of nut (10), the bottom of bolt (11) is passed through axis of rotation (6) and annular plate (8) in proper order through the fixed orifices and is extended to the outside of annular plate (8).

7. The composite sealing structure of the bidirectional pressure-bearing fire signal butterfly valve according to claim 6, characterized in that: bolt (11) extend to the surface of the outside one end of annular plate (8) and the bottom threaded connection who is located annular plate (8) has nut (12), the equal fixedly connected with ring flange (13) in front and the back of valve body (1), and threaded hole (14) are seted up on the surface of ring flange (13).