CN218408547U - Sealed three eccentric butterfly valve - Google Patents

Abstract

The utility model discloses a sealed good three eccentric butterfly valve, which comprises a valve body, the valve body inner wall is equipped with the valve rod, valve body bottom fixed mounting has the gasket, the gasket bottom is equipped with the end cover, end cover top inner wall threaded connection has screw A, screw A surface and valve body inner wall threaded connection, the valve rod inner wall pin joint has the cylindric lock. According to the sealed triple eccentric butterfly valve, when fluid passes through, the sealing part of the sealing ring seals the raft and the valve body, and the sealing ring is not deformed due to the influence of temperature because the sealing part of the sealing ring is made of flexible graphite material, so that the sealing performance of the device is better; the packing gland passes through the bolt fastening with the valve body, makes the filler stably place between valve body and valve rod, and the filler is flexible graphite material, has good resilience and wear-resisting corrosion-resistant and impermeability, and when making the pressure change, the filler can kick-back rapidly and avoid the valve body to have the fluid to intervene between the valve rod, has strengthened the leakproofness of device once more.

Description

Sealed three eccentric butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field especially relates to a sealed three eccentric butterfly valves.

Background

The butterfly valve is a valve which uses a disc type opening and closing member to rotate back and forth by about 90 degrees to open, close or adjust the medium flow, has simple structure, small volume, light weight, less material consumption, small installation size, small driving moment, simple and convenient operation and rapidness, and also has good flow adjusting function and sealing closing characteristic, is one of the fastest valve varieties developed in the last ten years, is very widely used, is still expanded in variety and quantity, develops towards high temperature, high pressure, large caliber, high sealing performance, long service life, good adjusting characteristic and one-valve multifunctional development, and achieves higher level in reliability and other performance indexes; the three-eccentric butterfly valve is a type of butterfly valve, the axis of a valve rod deviates from the center of a disc and the center of a body at the same time, and the axis of rotation of a valve seat and the axis of a valve body channel form a certain angle, so that the three-eccentric butterfly valve is called;

however, the existing triple eccentric butterfly valve is provided with a layer of rubber ring on the inner side of the valve body, so that the sealing performance is improved, but when the fluid temperature is higher, the rubber ring is easy to soften, and when the fluid temperature is lower, the rubber ring is easy to shrink due to cooling, so that the rubber ring is easy to deform, the sealing performance of the butterfly valve is affected, and the sealing effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the sealing problem of the triple offset butterfly valve existing in the prior art and providing a sealed triple offset butterfly valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a sealed good three eccentric butterfly valve, includes the valve body, the valve body inner wall is equipped with the valve rod, valve body bottom fixed mounting has the gasket, the gasket bottom is equipped with the end cover, end cover top inner wall threaded connection has screw A, screw A surface and valve body inner wall threaded connection, valve rod inner wall pin joint has the cylindric lock, the cylindric lock surface is provided with the valve plate subassembly, the valve plate subassembly includes the raft, raft inner wall and cylindric lock surface joint, one side contact that the cylindric lock was kept away from to the raft has the sealing washer, sealing washer inner wall threaded connection has screw B, one side inner wall threaded connection that the cylindric lock was kept away from to screw B surface and raft, sealing washer rubber ring part top fixed mounting has the clamp plate, clamp plate surface and valve body inner wall sliding connection, valve body inner wall and valve rod surface gap department are equipped with the filler, the filler top is equipped with gland, gland inner wall and valve rod surface sliding connection, gland top inner wall and valve rod surface inner wall pass through bolt threaded connection, valve body top fixed mounting has the support, the top is equipped with the turbine device, the turbine device openly is equipped with the parallel key.

Preferably, the valve body adopts the WCB carbon steel material, and the valve body light in weight and the save raw materials of WCB carbon steel material are economical and practical.

Preferably, the valve rod is made of 2Cr13 materials, and 2Cr13 belongs to martensitic stainless steel, so that the valve rod is magnetic and high in hardness.

Preferably, the sealing washer adopts SS material and flexible graphite material, and sealing washer sealing part adopts the flexible graphite material, and the sealing washer adopts the SS material with screw B contact segment, and flexible graphite has nonradiative pollution-free advantage, and high temperature resistant possesses higher resilience, avoids the sealing washer to produce deformation under different temperatures to influence sealed effect.

Preferably, the filler is made of flexible graphite, and the flexible graphite has the advantages of good resilience, wear resistance, corrosion resistance and good impermeability.

Preferably, the packing gland is made of WCB carbon steel.

Preferably, the flat key is made of 35 # steel.

Compared with the prior art, the utility model has the advantages that;

1. the utility model discloses in, this sealed three eccentric butterfly valve, when the fluid through, the sealing part of sealing washer seals raft board and valve body, because of the sealing washer sealing part is flexible graphite material, makes the sealing washer not receive the temperature influence and produces deformation to the leakproofness that makes the device is better.

2. The utility model discloses in, this sealed good three eccentric butterfly valve, gland and valve body pass through the bolt fastening, make the filler stably place between valve body and valve rod, and the filler is the flexible graphite material, have good resilience and wear-resisting corrosion-resistant and impermeability, and when making pressure change, the filler can kick-back rapidly and avoid the valve body to have the fluid to intervene between the valve rod, has strengthened the leakproofness of device once more.

Drawings

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

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

FIG. 2 is an enlarged schematic view of the utility model at A;

FIG. 3 is a schematic diagram of the left side of the present invention;

fig. 4 is an enlarged schematic view of the position B of the present invention.

Illustration of the drawings:

1 valve body, 2 valve rods, 3 gaskets, 4 end covers, 5 screws A, 6 cylindrical pins, 7 valve plate assemblies, 701 raft plates, 702 screws B, 703 sealing rings, 704 pressing plates, 8 packing, 9 packing gland covers, 10 supports, 11 turbine devices and 12 flat keys.

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. 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 the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; 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.

As shown in fig. 1-4, the utility model provides a technical solution: a sealed triple eccentric butterfly valve comprises a valve body 1, wherein the valve body 1 is made of WCB carbon steel, a valve rod 2 is arranged on the inner wall of the valve body 1, the valve rod 2 is made of 2cr13, a gasket 3 is fixedly arranged at the bottom of the valve body 1, an end cover 4 is arranged at the bottom of the gasket 3, a screw A5 is connected with the inner wall of the top of the end cover 4 in a threaded manner, the surface of the screw A5 is connected with the inner wall of the valve body 1 in a threaded manner, a cylindrical pin 6 is connected with the inner wall of the valve rod 2 in a pin manner, a valve plate assembly 7 is arranged on the surface of the cylindrical pin 6, the valve plate assembly 7 comprises a raft plate 701, the inner wall of the raft plate 701 is clamped with the surface of the cylindrical pin 6, a sealing ring 703 is contacted with one side of the raft plate 701, the sealing ring 703 is made of 304SS material and flexible graphite material, the sealing part of the sealing ring 703 is made of 304SS material, and the inner wall of the sealing ring 703 is connected with a screw B702 in a threaded manner, the surface of a screw B702 is in threaded connection with the inner wall of one side of a raft 701, which is far away from a cylindrical pin 6, the top of a rubber ring part of a sealing ring 703 is fixedly provided with a pressing plate 704, the surface of the pressing plate 704 is in sliding connection with the inner wall of a valve body 1, a gap between the inner wall of the valve body 1 and the surface of a valve rod 1 is provided with a packing 8, the packing 8 is made of flexible graphite materials, the top of the packing 8 is provided with a packing gland 9, the packing gland 9 is made of WCB carbon steel materials, the inner wall of the packing gland 9 is in sliding connection with the surface of the valve rod 1, the inner wall of the top of the packing gland 9 is in threaded connection with the inner wall of the valve body 1 through bolts, the top of the valve body 1 is fixedly provided with a support 10, the top of the valve rod 2 is provided with a turbine device 11, the front of the turbine device 11 is provided with a flat key 12, the flat key 12 is made of No. 35 steel, when fluid passes through, the sealing part of the sealing ring 703 seals the raft 701 and the valve body 1, and the sealing ring 703 is made of flexible graphite materials, so that the sealing ring 703 is not deformed under the influence of temperature, thereby the leakproofness of messenger's device is better, and gland 9 passes through the bolt fastening with valve body 1, makes 8 stable the placing between valve body 1 and valve rod 2 of packing, and packs 8 and be flexible graphite material, has good resilience and wear-resisting corrosion-resistant and impermeability, and when making pressure change, packing 8 can kick-back rapidly and avoid valve body 1 to have the fluid to intervene between valve rod 2, has strengthened the leakproofness of device once more.

According to the sealed triple eccentric butterfly valve, when fluid passes through, the sealing part of the sealing ring 703 seals the raft 701 and the valve body 1, and the sealing part of the sealing ring 703 is made of flexible graphite materials, so that the sealing ring 703 is not deformed due to the influence of temperature; packing gland 9 passes through the bolt fastening with valve body 1, makes packing 8 stably place between valve body 1 and valve rod 2, and packing 8 is flexible graphite material, has good resilience and wear-resisting corrosion-resistant and impermeability, and when making the pressure change, packing 8 can kick-back rapidly and avoid valve body 1 to have the fluid to intervene between valve rod 2.

Claims (7)

1. The utility model provides a sealed three eccentric butterfly valve, includes valve body (1), its characterized in that: the inner wall of the valve body (1) is provided with a valve rod (2), the bottom of the valve body (1) is fixedly provided with a gasket (3), the bottom of the gasket (3) is provided with an end cover (4), the inner wall of the top of the end cover (4) is in threaded connection with a screw A (5), the surface of the screw A (5) is in threaded connection with the inner wall of the valve body (1), the inner wall of the valve rod (2) is in pin joint with a cylindrical pin (6), the surface of the cylindrical pin (6) is provided with a valve plate assembly (7), the valve plate assembly (7) comprises a raft (701), the inner wall of the raft (701) is in surface joint with the cylindrical pin (6), one side of the raft (701) far away from the cylindrical pin (6) is contacted with a sealing ring (704), the inner wall of the sealing ring (703) is in threaded connection with a screw B (702), the surface of the screw B (702) is in threaded connection with one side of the raft (701) far away from the cylindrical pin (6), the top of a rubber ring part of the sealing ring (703) is fixedly provided with a pressing plate (704), the surface of the pressing plate (704) is in sliding connection with the inner wall of the valve body (1), the valve rod (1) is provided with a packing gap (9), and the top of the valve rod (2) is provided with a packing gland (9), and the gland (9) are provided with the inner wall of the valve rod (9), the packing gland (9) top inner wall passes through bolt threaded connection with valve body (1) inner wall, valve body (1) top fixed mounting has support (10), valve rod (2) top is equipped with turbine device (11), turbine device (11) openly are equipped with parallel key (12).

2. A sealed triple offset butterfly valve according to claim 1, wherein: the valve body (1) is made of WCB carbon steel.

3. A sealed triple offset butterfly valve according to claim 1, wherein: the valve rod (2) is made of 2cr13 materials.

4. A sealed triple offset butterfly valve according to claim 1, wherein: the sealing ring (703) is made of 304SS materials and flexible graphite materials, the sealing part of the sealing ring (703) is made of flexible graphite materials, and the contact part of the sealing ring (703) and the screw B (702) is made of 304SS materials.

5. A sealed triple offset butterfly valve according to claim 1, wherein: the filler (8) is made of flexible graphite.

6. A sealed triple offset butterfly valve according to claim 1, wherein: and the packing gland (9) is made of WCB carbon steel.

7. A sealed triple offset butterfly valve according to claim 1, wherein: the flat key (12) adopts 35 # steel.

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