CN211574286U

CN211574286U - Hard seal butterfly valve

Info

Publication number: CN211574286U
Application number: CN201922466471.2U
Authority: CN
Inventors: 唐春荣
Original assignee: Heyuan Flowtecal Automatic Control Valve Co ltd
Current assignee: Heyuan Flowtecal Automatic Control Valve Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-25
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a hard sealed butterfly valve, which comprises a valve body, the both ends of valve body all are provided with the connecting block, and are two sets of the inside of connecting block all evenly is provided with the multiunit connecting block, be provided with explosion-proof shell between valve body and the connecting block, the intermediate position department of explosion-proof shell and valve body is provided with the vacuum storehouse, the outside be provided with the multiunit tighrening ring, the top of valve body is provided with the support, the inside of support is provided with the valve rod that runs through to the valve body bottom, the outside that the valve body bottom is located the valve rod is provided with the gasket, the bottom of valve body is provided with. The utility model discloses a according to definite butterfly plate diameter processing sealing washer can, then need not distinguish the direction, directly assemble on the butterfly plate, processing, assembly are simplified, need not the finish grinding alone, and the sealing washer adopts the stainless steel to make so, have improved the life of butterfly valve, make the sealed effect of butterfly valve better, have improved the leakproofness of butterfly valve.

Description

Hard seal butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a butterfly valve seals firmly.

Background

The valve rod axis deviates from the center of the disc and the center of the body at the same time, and the valve seat rotation axis has a certain angle with the valve body channel axis, which is called a triple eccentric butterfly valve.

Most valve seat sealing rings of three eccentric butterfly valves are designed into multi-layer sealing rings, multi-layer metal sealing rings are directly manufactured mainly due to high machining precision requirements, the machining precision requirements are high, the cross section of each sealing ring is an inclined plane formed by tangent cones, sealing is not tight, the phenomenon of bursting can occur due to too high water pressure, and the using effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a butterfly valve sealed firmly to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a hard sealing butterfly valve comprises a valve body, wherein two ends of the valve body are both provided with connecting blocks, a plurality of groups of connecting holes are uniformly arranged inside two groups of connecting blocks, an explosion-proof shell is arranged between the valve body and the connecting block, a vacuum bin is arranged at the middle position of the explosion-proof shell and the valve body, a plurality of groups of fastening rings are arranged on the outer side of the explosion-proof shell, a support is arranged at the top of the valve body, a valve rod penetrating to the bottom of the valve body is arranged in the support, a gasket is arranged at the bottom of the valve body and positioned at the outer side of the valve rod, a bottom cover is arranged at the bottom of the valve body, a butterfly plate is arranged on one side of the valve rod positioned in the valve body, a sealing ring is arranged on the outer side of the inner part of the butterfly plate, the outside of butterfly plate one end is provided with the fixed block, the inside position department that is located the sealing washer of valve body is provided with sealed piece, the bottom of support is provided with the bolt that the multiunit runs through to the valve body top.

Preferably, the top of the valve body is provided with a plurality of groups of fixing holes, the support is fixedly connected with the valve body through the fixing holes and bolts, and a gasket is arranged between the support and the valve body.

Preferably, one side of butterfly plate is provided with solid fixed ring, the butterfly plate passes through solid fixed ring and valve rod fixed connection, the butterfly plate passes through the valve rod and is connected with the valve body commentaries on classics.

Preferably, the inside of fixed block is provided with the multiunit and runs through to the inside bolt of butterfly plate, the fixed block passes through bolt and butterfly plate fixed connection, the sealing washer passes through fixed block and butterfly plate fixed connection.

Preferably, the explosion-proof shell is connected with the connecting block in a welded mode, sealant is arranged at the middle positions of the top and the bottom of the explosion-proof shell, and the sealing ring is made of stainless steel.

Preferably, the bottom cover is internally provided with a plurality of groups of bolts penetrating into the valve body, and the bottom cover is fixedly connected with the valve body through the bolts.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the sealing ring is processed according to the determined diameter of the butterfly plate, then the sealing ring is directly assembled on the butterfly plate without distinguishing directions, the processing and the assembly are simplified, independent matched grinding is not needed, and the sealing ring is made of stainless steel, so that the service life of the butterfly valve is prolonged, the sealing effect of the butterfly valve is better, and the sealing property of the butterfly valve is improved;

2. the utility model discloses an install explosion-proof shell between valve body and connecting block, consolidate explosion-proof shell through the fastening ring, improve the protection type of explosion-proof shell, play the effect of protection through the explosion-proof shell that sets up between valve body and the connecting block, prevent to cause the damage to the valve body, also prevent simultaneously that the valve body from taking place to burst and causing personnel's injury, improved the security of butterfly valve, make things convenient for people's use.

Drawings

Fig. 1 is a side sectional view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a schematic view of a partial structure of the present invention.

In the figure: 1. a valve body; 2. connecting blocks; 3. connecting holes; 4. an explosion-proof shell; 5. a vacuum bin; 6. a fastening ring; 7. a support; 8. a valve stem; 9. a gasket; 10. a bottom cover; 11. a butterfly plate; 12. a seal ring; 13. a sealing block; 14. a fixed block; 15. and (4) bolts.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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. 1-3, the present invention provides an embodiment of a hard seal butterfly valve: the utility model provides a hard seal butterfly valve, including valve body 1, the both ends of valve body 1 all are provided with connecting block 2, the inside of two sets of connecting block 2 all evenly is provided with multiunit connecting hole 3, be provided with explosion-proof shell 4 between valve body 1 and the connecting block 2, the intermediate position department of explosion-proof shell 4 and valve body 1 is provided with vacuum chamber 5, the outside of explosion-proof shell 4 is provided with multiunit tighrening ring 6, the top of valve body 1 is provided with support 7, the inside of support 7 is provided with the valve rod 8 that runs through to 1 bottom of valve body, the outside that 1 bottom of valve body is located valve rod 8 is provided with gasket 9, the bottom of valve body 1 is provided with bottom 10, one side that valve rod 8 is located 1 inside of valve body is provided with butterfly plate 11, the inside outside of butterfly plate 11 is provided with sealing washer 12, the outside of butterfly plate 11 one end is provided with fixed block 14, the position department that 1 inside.

Please refer to fig. 2, the top of the valve body 1 is provided with a plurality of sets of fixing holes, the bracket 7 is fixedly connected with the valve body 1 through the fixing holes and the bolts 15, so that the bracket 7 is firmly fixed with the valve body 1, and a gasket is arranged between the bracket 7 and the valve body 1, thereby improving the sealing performance of the device.

Please refer to fig. 2 and fig. 3, a fixing ring is disposed on one side of the butterfly plate 11, the butterfly plate 11 is fixedly connected to the valve rod 8 through the fixing ring, so that the butterfly plate 11 is fixedly connected to the valve rod 8, and the butterfly plate 11 is rotatably connected to the valve body 1 through the valve rod 8, so as to drive the butterfly plate 11 to rotate.

Please refer to fig. 3, a plurality of sets of bolts 15 penetrating into the butterfly plate 11 are disposed inside the fixing block 14, the fixing block 14 is fixedly connected with the butterfly plate 11 through the bolts 15, the sealing ring 12 is fixedly connected with the butterfly plate 11 through the fixing block 14, and the sealing ring 12 is convenient to replace through the fixing block 14.

Please refer to fig. 1, the explosion-proof housing 4 is welded to the connecting block 2, the middle positions of the top and the bottom of the explosion-proof housing 4 are all provided with a sealant to fix the explosion-proof housing 4, the sealing ring 12 is made of stainless steel, and the service life of the sealing ring 12 is prolonged.

Please refer to fig. 1 and fig. 2, a plurality of sets of bolts 15 penetrating into the valve body 1 are disposed inside the bottom cover 10, and the bottom cover 10 is fixedly connected to the valve body 1 through the bolts 15 to seal the bottom of the valve body 1, thereby improving the sealing performance of the butterfly valve.

The working principle is as follows: the utility model discloses add man-hour, only need according to the 11 diameter processing sealing washer 12 of butterfly plate confirmed can, then need not distinguish the direction, direct assembly is on butterfly plate 11, processing, the assembly is simplified, need not to join in marriage alone and grind, and sealing washer 12 adopts the stainless steel to make so, make the sealed effect of butterfly valve better, the life of butterfly valve has been improved, in use, install the butterfly valve on the pipeline through connecting hole 3 and bolt 15, install explosion-proof shell 4 between valve body 1 and connecting block 2, consolidate explosion-proof shell 4 through tighrening ring 6, improve the protection type of explosion-proof shell 4, play the effect of protection through explosion-proof shell 4 that sets up between valve body 1 and the connecting block 2, prevent to cause the damage to valve body 1, also prevent simultaneously that valve body 1 from taking place to burst and causing personnel's injury, the security of butterfly valve is improved, make things convenient for people.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A kind of hard seal butterfly valve, including the valve block (1), its characterized in that: the anti-explosion valve is characterized in that connecting blocks (2) are arranged at two ends of the valve body (1), a plurality of groups of connecting holes (3) are uniformly formed in two groups of connecting blocks (2), an anti-explosion shell (4) is arranged between the valve body (1) and the connecting blocks (2), a vacuum bin (5) is arranged at the middle position of the anti-explosion shell (4) and the valve body (1), a plurality of groups of fastening rings (6) are arranged on the outer side of the anti-explosion shell (4), a support (7) is arranged at the top of the valve body (1), a valve rod (8) penetrating to the bottom of the valve body (1) is arranged in the support (7), a gasket (9) is arranged on the outer side, located on the valve rod (8), of the bottom of the valve body (1) is provided with a bottom cover (10), a butterfly plate (11) is arranged on one side, located inside the valve rod (8), a sealing ring (12), the outside of butterfly plate (11) one end is provided with fixed block (14), the inside position department that is located sealing washer (12) of valve body (1) is provided with sealed piece (13), the bottom of support (7) is provided with multiunit and runs through bolt (15) to valve body (1) top.

2. The hard seal butterfly valve of claim 1, wherein: the valve is characterized in that a plurality of groups of fixing holes are formed in the top of the valve body (1), the support (7) is fixedly connected with the valve body (1) through the fixing holes and the bolts (15), and a gasket is arranged between the support (7) and the valve body (1).

3. The hard seal butterfly valve of claim 1, wherein: one side of butterfly plate (11) is provided with solid fixed ring, butterfly plate (11) are through solid fixed ring and valve rod (8) fixed connection, butterfly plate (11) are changeed with valve body (1) through valve rod (8) and are connected.

4. The hard seal butterfly valve of claim 1, wherein: the inside of fixed block (14) is provided with multiunit and runs through to inside bolt (15) of butterfly plate (11), fixed block (14) are through bolt (15) and butterfly plate (11) fixed connection, sealing washer (12) are through fixed block (14) and butterfly plate (11) fixed connection.

5. The hard seal butterfly valve of claim 1, wherein: explosion-proof shell (4) and connecting block (2) welded connection, the intermediate position department of explosion-proof shell (4) top and bottom all is provided with sealed glue, sealing washer (12) are made by the stainless steel and are formed.

6. The hard seal butterfly valve of claim 1, wherein: the valve is characterized in that a plurality of groups of bolts (15) penetrating into the valve body (1) are arranged in the bottom cover (10), and the bottom cover (10) is fixedly connected with the valve body (1) through the bolts (15).