CN217874279U

CN217874279U - Bellows gate valve with well bucket seal structure

Info

Publication number: CN217874279U
Application number: CN202220685099.3U
Authority: CN
Inventors: 杨贤珍; 林学佳; 蒋丽达
Original assignee: Wenzhou Jinbo Valve Co ltd
Current assignee: Wenzhou Jinbo Valve Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-11-22
Anticipated expiration: 2032-03-28

Abstract

The utility model provides a bellows gate valve with well bucket seal structure, includes valve body, disk seat and executor, the disk seat sets up the department of putting at the inside central point of valve body, the valve body upper end sets up well bucket, well bucket upper end sets up the valve gap, the inside valve rod that sets up of well bucket, the valve rod top is fixed with valve cover connection, well bucket is run through to the valve rod, just the valve rod bottom stretches into the valve body, the valve rod bottom sets up the flashboard, the flashboard is connected fixedly with the valve rod, set up seal structure on the well bucket between well bucket and the valve gap, set up seal structure under the well bucket between well bucket and the valve body, seal structure sets up to the same structure of symmetry under well bucket seal structure and the well bucket on through set up corresponding seal structure and well bucket seal structure between well bucket and the valve gap and between well bucket and the valve body to the top and the bottom of sealed well bucket strengthen the sealing performance of valve.

Description

Bellows gate valve with well bucket seal structure

Technical Field

The utility model relates to a gate valve technical field, concretely relates to bellows gate valve with well bucket seal structure.

Background

The corrugated pipe gate valve is also called a corrugated pipe sealing stop valve, and a metal barrier is formed between a fluid medium and the atmosphere through automatic roll welding so as to ensure the design of zero leakage of a valve rod. The inside of the corrugated pipe gate valve adopts a corrugated pipe structure, and the lower end of a stainless steel corrugated pipe is welded on the valve rod so as to prevent process fluid from corroding the valve rod. The other end is arranged between the valve body and the valve cover to form static seal. Adopt dual sealed design if the bellows inefficacy valve rod filler also can avoid leaking, the bellows welds in the operating performance that the valve rod remains stable, avoids because valve plug vibration causes the valve rod vibration. The stop valve is most suitable for pipelines of steam, inflammable, explosive, heat conducting oil, high-purity, toxic and other media, and the stop valve used in a system with corrosive and toxic liquid or gas as a medium needs to be well protected against corrosion and leakage.

The sealing between the barrel, the valve cover and the valve body of the existing corrugated pipe gate valve is usually only sealed by adopting a common sealing washer and a set screw, and a good sealing effect cannot be usually achieved.

Disclosure of Invention

In view of this, the utility model provides a bellows gate valve with well bucket seal structure.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a bellows gate valve with well bucket seal structure, includes valve body, disk seat and executor, the disk seat sets up the department of putting at the inside central point of valve body, the valve body upper end sets up well bucket, well bucket upper end sets up the valve gap, the inside valve rod that sets up of well bucket, the valve rod top is fixed with valve gap connection, the valve rod runs through well bucket, just the valve rod bottom stretches into the valve body, the valve rod bottom sets up the flashboard, the flashboard is connected fixedly with the valve rod, set up well bucket upper seal structure between well bucket and the valve gap, set up well bucket lower seal structure between well bucket and the valve body, well bucket upper seal structure and well bucket lower seal structure set up the same structure into the symmetry, well bucket upper seal structure is including setting up the well bucket upper seal groove on well bucket top and setting up the valve gap in the valve gap bottom, set up well bucket upper seal circle between well bucket upper seal groove and the valve gap seal groove, the both ends of well bucket upper seal circle stretch into well bucket upper seal groove and valve gap seal groove respectively and well bucket and valve gap are connected.

The preferred, well bucket upper seal groove and valve gap seal groove set up labyrinth structure and valve gap labyrinth structure on the well bucket that corresponds respectively, well bucket upper seal groove is the groove structure of a plurality of equidistant settings that well bucket upper seal groove diapire indent formed, valve gap labyrinth structure is the groove structure of a plurality of equidistant settings that valve gap seal groove roof indent formed, well bucket upper seal circle's both ends correspond well bucket upper seal circle and valve gap labyrinth structure and set up labyrinth seal end and lower labyrinth seal end, go up labyrinth seal end and lower labyrinth seal end and stretch into corresponding well bucket upper seal labyrinth structure and valve gap labyrinth structure and well bucket and valve gap seal and meet.

Preferably, the labyrinth structures on the middle barrel and the valve cover labyrinth structures are arranged in a staggered mode.

Preferably, the upper sealing ring of the middle barrel is made of elastic rubber, and the widths of the upper labyrinth seal end and the lower labyrinth seal end are both larger than the widths of the corresponding upper labyrinth structure and the valve cover labyrinth structure of the middle barrel.

Preferably, set screws are arranged between the middle barrel and the valve cover and between the middle barrel and the valve body, and the middle barrel is connected with the valve cover and the valve body through the set screws.

The beneficial effects of the utility model reside in that: the utility model discloses a set up corresponding well bucket upper seal structure and well bucket lower seal structure between well bucket and valve gap and between well bucket and the valve body to come the top and the bottom of sealed well bucket, strengthen the sealing performance of valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

fig. 2 is an enlarged view of a portion a of fig. 1.

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 efforts all belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings.

The utility model provides a following technical scheme:

as shown in the accompanying drawings 1-2, the utility model discloses a bellows gate valve with well bucket 4 seal structure, including valve body 1, disk seat 2 and executor 3, disk seat 2 sets up in 1 inside central point of valve body and puts the department, 1 upper end of valve body sets up well bucket 4, well bucket 4 upper end sets up valve gap 5, the inside valve rod 6 that sets up of well bucket 4, 6 tops of valve rod are connected with valve gap 5 and are fixed, bucket 4 in the valve rod 6 runs through, just valve rod 6 bottom stretches into valve body 1, 6 bottoms of valve rod set up flashboard 7, flashboard 7 is connected fixedly with valve rod 6, it goes up seal structure 8 to set up well bucket between well bucket 4 and the valve gap 5, it goes up seal structure 9 under bucket to set up to the same structure of symmetry to go up seal structure 8 and well bucket between bucket 4 and the valve body 1, seal structure 9 sets up to the same structure under well bucket. Specifically, this design is through setting up corresponding well bucket upper seal structure 8 and well bucket lower seal structure 9 between well bucket 4 and valve gap 5 and well bucket 4 and valve body 1 to come the top and the bottom of sealed well bucket 4, strengthen the sealing performance of valve.

Further, the upper sealing structure 8 of the middle bucket comprises an upper sealing groove 10 of the middle bucket arranged at the top end of the middle bucket 4 and a valve cover sealing groove 11 arranged at the bottom end of the valve cover 5, an upper sealing ring 12 of the middle bucket is arranged between the upper sealing groove 10 of the middle bucket and the valve cover sealing groove 11, and two ends of the upper sealing ring 12 of the middle bucket respectively extend into the upper sealing groove 10 of the middle bucket and the valve cover sealing groove 11 to be hermetically connected with the middle bucket 4 and the valve cover 5. The sealing treatment is carried out between the middle barrel 4 and the valve cover 5 through the arrangement of the middle barrel upper sealing ring 12, the middle barrel 4 and the valve cover 5 are tightly pressed by the middle barrel upper sealing ring 12 between the middle barrel 4 and the valve cover 5 after being connected through the fastening screw 13, so that the two ends of the middle barrel upper sealing ring 12 can be tightly attached to the groove parts of the middle barrel upper sealing groove 10 and the valve cover sealing groove 11, and the sealing effect is achieved.

Further, well bucket upper seal groove 10 and valve gap seal groove 11 set up labyrinth structure 14 and valve gap labyrinth structure 15 on the well bucket that corresponds respectively, well bucket upper seal groove 14 is the groove structure of a plurality of equidistant settings that well bucket upper seal groove 10 diapire indent formed, valve gap labyrinth structure 15 is the groove structure of a plurality of equidistant settings that the valve gap seal groove 11 roof indent formed, well bucket upper seal 12's both ends correspond well bucket upper seal 14 and valve gap labyrinth structure 15 and set up labyrinth seal end 16 and lower labyrinth seal end 17, go up labyrinth seal end 16 and lower labyrinth seal end 17 and stretch into corresponding well bucket 4 labyrinth structure and valve gap labyrinth structure 15 and well bucket 4 and valve gap 5 sealed the meeting. Further, the labyrinth structures of the middle barrel 4 and the valve cover labyrinth structures 15 are arranged in a staggered mode. Specifically, the staggered middle barrel upper labyrinth structure 14 and the valve cover labyrinth structure 15 can increase the path distance of the medium leaking to the outside, so that the medium does not have enough power to continuously leak when leaking to a certain position, and the phenomenon of sealing and preventing leakage is achieved.

Further, the middle barrel upper sealing ring 12 is made of elastic rubber, and the widths of the upper labyrinth seal end 16 and the lower labyrinth seal end 17 are both larger than the widths of the corresponding middle barrel 4 labyrinth structure and the valve cover labyrinth structure 15. Specifically, through setting up sealing washer 12 to elastic rubber material on the well bucket to go up labyrinth seal end 16 and the width of lower labyrinth seal end 17 and all be greater than the width of corresponding well bucket 4 labyrinth structure and valve gap labyrinth structure 15 and make the both ends of sealing washer 12 on the well bucket can take place deformation under the effect of pressure, and closely laminate the cell wall that corresponds well bucket upper seal groove 10 and valve gap seal groove 11.

Furthermore, set screws 13 are arranged between the middle barrel 4 and the valve cover 5 and between the middle barrel 4 and the valve body 1, and the middle barrel 4 is connected with the valve cover 5 and the valve body 1 through the set screws 13.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a bellows gate valve with well bucket seal structure, includes valve body, disk seat and executor, the disk seat sets up the department of putting at the inside central point of valve body, the valve body upper end sets up well bucket, well bucket upper end sets up the valve gap, well bucket is inside to set up the valve rod, the valve rod top is fixed with valve cover connection, the valve rod runs through well bucket, just the valve body is stretched into to the valve rod bottom, the valve rod bottom sets up the flashboard, the flashboard is connected fixedly with the valve rod, its characterized in that: the middle bucket upper sealing structure is arranged between the middle bucket and the valve cover, the middle bucket lower sealing structure is arranged between the middle bucket and the valve body, the middle bucket upper sealing structure and the middle bucket lower sealing structure are arranged to be symmetrical in the same structure, the middle bucket upper sealing structure comprises a middle bucket upper sealing groove and a valve cover sealing groove, the middle bucket upper sealing groove is formed in the top end of the middle bucket, the valve cover sealing groove is formed in the bottom end of the valve cover, the middle bucket upper sealing ring is arranged between the middle bucket upper sealing groove and the valve cover sealing groove, and two ends of the middle bucket upper sealing ring extend into the middle bucket upper sealing groove and the valve cover sealing groove respectively to be connected with the middle bucket and the valve cover in a sealing mode.

2. The bellows gate valve with middle bucket sealing structure of claim 1, wherein: well bucket upper seal groove and valve gap seal groove set up labyrinth structure and valve gap labyrinth structure on the well bucket that corresponds respectively, well bucket upper seal groove is the groove structure of a plurality of equidistant settings that well bucket upper seal groove diapire indent formed, valve gap labyrinth structure is the groove structure of a plurality of equidistant settings that valve gap seal groove roof indent formed, well bucket upper seal circle's both ends correspond well bucket upper seal circle on labyrinth structure and valve gap labyrinth structure set up labyrinth seal end and lower labyrinth seal end, go up labyrinth seal end and lower labyrinth seal end and stretch into corresponding well bucket upper seal labyrinth structure and valve gap labyrinth structure and well bucket and valve gap seal and meet.

3. The bellows gate valve with middle barrel sealing structure of claim 2, wherein: the labyrinth structure and the valve cover labyrinth structure on the middle barrel are arranged in a staggered mode.

4. The bellows gate valve with middle bucket sealing structure of claim 2, wherein: the upper sealing ring of the middle barrel is made of elastic rubber, and the widths of the upper labyrinth sealing end and the lower labyrinth sealing end are larger than the widths of the corresponding upper labyrinth structure and the valve cover labyrinth structure of the middle barrel.

5. The bellows gate valve with middle bucket sealing structure of claim 1, wherein: and set screws are arranged between the middle barrel and the valve cover and between the middle barrel and the valve body, and the middle barrel is connected with the valve cover and the valve body through the set screws.