CN217355618U

CN217355618U - Bellows sealing cage type double-seat regulating valve

Info

Publication number: CN217355618U
Application number: CN202220401347.7U
Authority: CN
Inventors: 朱海勇; 周玉勤
Original assignee: Jiangsu Runyi Instrument Co ltd
Current assignee: Jiangsu Runyi Instrument Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-09-02
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a bellows sealing cage type double-seat regulating valve, which relates to the technical field of regulating valves and comprises a valve body and a drainage component; a valve body: a valve rod is arranged in the valve body, a valve core is arranged at the bottom end of the valve rod, a valve seat is arranged at the bottom of the valve body, flange pipes are symmetrically arranged at two ends of the valve seat, a water inlet cavity and a water outlet cavity which correspond to the flange pipes are respectively arranged at two sides in the valve seat, a valve port which corresponds to and is matched with the valve core is arranged at the end part of the water inlet cavity, and a limiting component is arranged at the bottom of the valve body; a drainage assembly: including drum, outage, guide arm, circle seat, sealing plug and guide hole, the bottom that the disk seat was located to the drum corresponds with the lower position of intake antrum, the side bottom of drum is evenly located to the outage, the guide arm runs through the bottom surface of drum, the top of guide arm is located to the circle seat, and this bellows sealing cage double-seat governing valve is convenient for the fluid intracavity remain the discharge of medium, can effectively alleviate inside corruption, and the practicality is stronger.

Description

Bellows seal cage type double-seat regulating valve

Technical Field

The utility model relates to a governing valve technical field specifically is a bellows seal cage type double-seat governing valve.

Background

Bellows sealing cage type double-seat regulating valve is a pressure balance type regulating valve, the valve body structure is compact, the fluid passage is S-shaped, the pressure drop loss is small, the flow is large, the adjustable range is wide, the automatic control system can be widely applied to rare special media such as severe toxicity, strong corrosivity and radioactivity, the existing bellows sealing cage type double-seat regulating valve is used, partial fluid medium can be remained in a fluid cavity after the use, the discharge is more troublesome, the corrosion of the inner wall is easily caused after the discharge is not carried out for a long time, the service life is influenced, therefore, the bellows sealing cage type double-seat regulating valve is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a bellows seal cage double-seat governing valve, the discharge of the residual medium in the fluid cavity of being convenient for can effectively alleviate inside corruption, and the practicality is stronger, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a bellows sealing cage type double-seat regulating valve comprises a valve body and a drainage component;

a valve body: a valve rod is arranged in the valve body, a valve core is arranged at the bottom end of the valve rod, a valve seat is arranged at the bottom of the valve body, flange pipes are symmetrically arranged at two ends of the valve seat, a water inlet cavity and a water outlet cavity which correspond to the flange pipes are respectively arranged at two sides in the valve seat, a valve port which corresponds to and is matched with the valve core is arranged at the end part of the water inlet cavity, and a limiting component is arranged at the bottom of the valve body;

a drainage assembly: including drum, outage, guide arm, circle seat, sealing plug and guide hole, the bottom that the disk seat was located to the drum corresponds with the lowest position of intake antrum in the position, the side bottom of drum is evenly located to the outage, the bottom surface of drum is run through to the guide arm, the top of guide arm is located to the circle seat, the surface of circle seat is located to the sealing plug, the guide hole is seted up in the bottom of intake antrum and the position that the sealing plug corresponds.

Further, the drainage assembly further comprises a spring, the spring is sleeved on the guide rod and located between the round seat and the inner bottom surface of the cylinder, the guide rod can be pulled downwards by the drainage assembly, the spring is compressed, the sealing plug is separated from the guide hole, opening of the guide hole can be achieved, and residual media gathered at the position can be discharged into the cylinder through the guide hole and discharged through the liquid discharge hole at the bottom due to the fact that the guide hole is located at the lowest position of the water inlet cavity.

Further, still include seal groove and sealed the pad, sealed the surface edge who locates the circle seat of filling up, the seal groove is seted up in the bottom of disk seat and is filled up the position that corresponds with sealed the pad, and sealed the cooperation that corresponds with the seal groove can realize the sealing between circle seat and the disk seat, prevents that the medium from oozing.

Furthermore, the corrugated pipe is arranged on the inner bottom surface of the cylinder, the top end of the corrugated pipe is fixedly connected with the bottom surface of the round seat, the corrugated pipe is located on the outer side of the spring, the corrugated pipe can seal the joint of the guide rod and the cylinder, and the medium is prevented from leaking.

Further, spacing subassembly includes base, slide bar and nut, the bottom of guide arm is located to the base, the bottom surface of drum is located to the slide bar, and the slide bar runs through the bottom surface of base, nut threaded connection is located the bottom side position of base on the slide bar, and spacing subassembly accessible release guide arm utilizes the reseing of spring to realize reseing of guide arm, can make the sealing plug correspond the cooperation with the guide hole, then screws the nut, can realize spacing to the base, avoids the sealing plug to be washed out the guide hole by the high-pressure medium in the disk seat, can improve the sealed between round seat and the disk seat simultaneously.

Further, still include circle frame and filter plate, the circle frame is located in the flange pipe that is located intake antrum one side, the filter plate is located in the circle frame, and the filter plate can realize filtering to fluid medium, prevents that large granule impurity from getting into, reduces the erosion to intake intracavity wall.

Compared with the prior art, the beneficial effects of the utility model are that: this bellows seal cage double-seat governing valve has following benefit:

1. this drainage component accessible of bellows sealing cage double-seater governing valve stimulates the guide arm downwards, and the spring is compressed, makes the sealing plug break away from the guide hole, can realize opening of guide hole, because the guide hole is located the extreme low position of intake antrum, the residual medium of this department gathering can be discharged to the drum through the guide hole in, the outage through the bottom is discharged.

2. The sealing gasket of the bellows sealing cage type double-seat regulating valve is matched with the sealing groove correspondingly, sealing between the circular seat and the valve seat can be realized, sealing at the joint of the guide rod and the cylinder can be realized by the bellows, and seepage of a medium is prevented.

3. This spacing subassembly accessible release guide arm of sealed cage double-seat governing valve of bellows utilizes the reseing of the realization guide arm of spring, can make the sealing plug correspond the cooperation with the guide hole, then the nut of screwing, can realize spacing to the base, avoids the sealing plug to be washed out the guide hole by high-pressure medium in the disk seat, can improve the sealed between round seat and the disk seat simultaneously.

Drawings

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

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

fig. 3 is an enlarged schematic view of the a position of the present invention.

In the figure: 1 valve body, 11 valve seats, 12 flange pipes, 13 valve rods, 14 valve cores, 15 water inlet cavities, 16 water outlet cavities, 17 valve ports, 2 water discharge assemblies, 21 cylinders, 22 liquid discharge holes, 23 guide rods, 24 round seats, 25 sealing plugs, 26 guide holes, 27 springs, 3 sealing grooves, 31 sealing gaskets, 4 corrugated pipes, 5 limiting assemblies, 51 bases, 52 sliding rods, 53 nuts, 6 round frames and 61 filter plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. 1-3, the present embodiment provides a technical solution: a bellows sealing cage type double-seat regulating valve comprises a valve body 1 and a drainage component 2;

valve body 1: a valve rod 13 is arranged in the valve body 1, a valve core 14 is arranged at the bottom end of the valve rod 13, a valve seat 11 is arranged at the bottom of the valve body 1, flange pipes 12 are symmetrically arranged at two ends of the valve seat 11, a water inlet cavity 15 and a water outlet cavity 16 corresponding to the flange pipes 12 are respectively arranged at two sides in the valve seat 11, a valve port 17 correspondingly matched with the valve core 14 is arranged at the end part of the water inlet cavity 15, a limiting component 5 is arranged at the bottom of the valve body 1, the limiting component 5 comprises a base 51, a sliding rod 52 and a nut 53, the base 51 is arranged at the bottom end of a guide rod 23, the sliding rod 52 is arranged at the bottom surface of a cylinder 21, the sliding rod 52 penetrates through the bottom surface of the base 51, and the nut 53 is in threaded connection with the sliding rod 52 and is positioned at the bottom side of the base 51;

and (3) a drainage assembly 2: including drum 21, outage 22, guide arm 23, circle seat 24, sealing plug 25 and guide hole 26, the bottom that disk seat 11 was located to drum 21 corresponds with the lowest position of intake antrum 15, lateral bottom that drum 21 was evenly located to outage 22, guide arm 23 runs through the bottom surface of drum 21, the top of guide arm 23 is located to circle seat 24, the surface of circle seat 24 is located to sealing plug 25, the position that the bottom that intake antrum 15 was seted up in guide hole 26 corresponds with sealing plug 25, drainage component 2 still includes spring 27, spring 27 cup joints the position that lies in between the inboard bottom surface of circle seat 24 and drum 21 on guide arm 23.

Wherein: the sealing device further comprises a sealing groove 3 and a sealing gasket 31, wherein the sealing gasket 31 is arranged at the edge of the surface of the round seat 24, and the sealing groove 3 is arranged at the position, corresponding to the sealing gasket 31, of the bottom of the valve seat 11; the corrugated pipe 4 is arranged on the inner bottom surface of the cylinder 21, the top end of the corrugated pipe 4 is fixedly connected with the bottom surface of the round seat 24, and the corrugated pipe 4 is positioned on the outer side of the spring 27; the filter plate is characterized by further comprising a round frame 6 and a filter plate 61, wherein the round frame 6 is arranged in the flange pipe 12 located on one side of the water inlet cavity 15, and the filter plate 61 is arranged in the round frame 6.

By pulling the guide rod 23 downwards, the spring 27 is compressed, and the sealing plug 25 is disengaged from the guide hole 26, so that the guide hole 26 is opened, and since the guide hole 26 is located at the lowest position of the water inlet chamber 15, the residual medium accumulated therein is discharged into the cylinder 21 through the guide hole 26 and is discharged through the drain hole 22 at the bottom.

The utility model provides a pair of bellows seal cage double-seat governing valve's theory of operation as follows: firstly, the guide rod 23 is pulled downwards, the spring 27 is compressed, the sealing plug 25 is separated from the guide hole 26, the opening of the guide hole 26 can be realized, as the guide hole 26 is positioned at the lowest position of the water inlet cavity 15, residual media gathered at the position can be discharged into the cylinder 21 through the guide hole 26 and is discharged through the liquid discharge hole 22 at the bottom, after the discharge is finished, the guide rod 23 is loosened, the reset of the guide rod 23 is realized by the reset of the spring 27, the sealing plug 25 can be correspondingly matched with the guide hole 26, then the nut 53 is screwed, the limit of the base 51 can be realized, the sealing plug 25 is prevented from being washed out of the guide hole 26 by high-pressure media in the valve seat 11, the sealing gasket 31 is correspondingly matched with the sealing groove 3, the sealing between the round seat 24 and the valve seat 11 can be realized, and the sealing of the joint of the guide rod 23 and the cylinder 21 can be realized by the corrugated pipe 4.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a bellows seal cage double-seat governing valve which characterized in that: comprises a valve body (1) and a drainage component (2);

valve body (1): a valve rod (13) is arranged in the valve body (1), a valve core (14) is arranged at the bottom end of the valve rod (13), a valve seat (11) is arranged at the bottom of the valve body (1), flange pipes (12) are symmetrically arranged at two ends of the valve seat (11), a water inlet cavity (15) and a water outlet cavity (16) corresponding to the flange pipes (12) are respectively arranged at two sides in the valve seat (11), a valve port (17) correspondingly matched with the valve core (14) is arranged at the end part of the water inlet cavity (15), and a limiting component (5) is arranged at the bottom of the valve body (1);

drainage assembly (2): including drum (21), outage (22), guide arm (23), circle seat (24), sealing plug (25) and guide hole (26), the position that the bottom of disk seat (11) and the lowest of intake antrum (15) correspond is located in drum (21), the side bottom of drum (21) is evenly located in outage (22), the bottom surface of drum (21) is run through in guide arm (23), the top of guide arm (23) is located in circle seat (24), the surface of circle seat (24) is located in sealing plug (25), the position that the bottom and sealing plug (25) of intake antrum (15) correspond is seted up in guide hole (26).

2. A bellows seal cage dual seat regulator valve according to claim 1, wherein: the drainage assembly (2) further comprises a spring (27), and the spring (27) is sleeved on the guide rod (23) and is positioned between the round seat (24) and the inner bottom surface of the cylinder (21).

3. A bellows seal cage dual seat regulator valve according to claim 1, wherein: still include seal groove (3) and sealed pad (31), the surperficial edge of circle seat (24) is located in sealed pad (31), the position that the bottom of valve seat (11) and sealed pad (31) correspond is seted up in seal groove (3).

4. A bellows seal cage dual seat regulator valve according to claim 2, wherein: still include bellows (4), the inside bottom surface of drum (21) is located in bellows (4), the top of bellows (4) and the bottom surface fixed connection of round seat (24), and bellows (4) are located the outside of spring (27).

5. A bellows seal cage dual seat regulator valve according to claim 1, wherein: the limiting component (5) comprises a base (51), a sliding rod (52) and a nut (53), the base (51) is arranged at the bottom end of the guide rod (23), the sliding rod (52) is arranged on the bottom surface of the cylinder (21), the sliding rod (52) penetrates through the bottom surface of the base (51), and the nut (53) is in threaded connection with the sliding rod (52) and located at the bottom side of the base (51).

6. A bellows seal cage dual seat regulator valve according to claim 1, wherein: the filter plate is characterized by further comprising a round frame (6) and a filter plate (61), wherein the round frame (6) is arranged in the flange pipe (12) located on one side of the water inlet cavity (15), and the filter plate (61) is arranged in the round frame (6).