CN218063439U - Novel gas butterfly valve device - Google Patents

Abstract

The utility model provides a novel gas butterfly valve device, which comprises a butterfly valve shell with an inner cavity body and is used for installing and arranging a disc; the interior survey of interior cavity is equipped with sunken sealing ring portion for inlay installation sealing device, sealing device is including inside cavity and have elastic expansion sealing ring. The utility model discloses an it is sealed earlier to seal the back, is applicable to the scene that has large granule impurity and uses, plays fine guard action to the sealing contact surface, even if there is clearance or little hollow in the sealing contact surface, accessible elastic expansion warp compensaties, reduces the condition of leaking, realizes better sealing performance, and the valve block is longe-lived with the sealed ring subassembly of inflation to need not frequent maintenance, with low costs, the practicality is very strong, can carry out the on-the-spot application and promote.

Description

Novel gas butterfly valve device

Technical Field

The utility model relates to a butterfly valve device technical field especially relates to a novel gas butterfly valve device.

Background

The traditional butterfly valve has various types, the butterfly valve used for occasions such as drainage, pollution discharge and the like is simple in structure, a circular valve block rotating along with a valve rod is generally technically arranged and used for cutting off water flow, and meanwhile, a sealing ring and a valve seat both adopt cylindrical surfaces.

In the prior art, because the sealing face of each butterfly valve is the face of cylinder generally, sealing measure generally adopts sealing washer etc. and some are that the sealing washer is inlayed on the valve body, and some are that direct the attachement is around the valve block, and the problem that traditional art exists still is than many: (1) Gaps easily exist on contact surfaces, the sealing performance is deviated, and particularly in the application of scenes with poor fluid media, tiny pits exist after sealing surfaces are corroded, so that the sealing performance is influenced;

(2) When large-particle impurities exist in a fluid medium, the large-particle impurities are continuously extruded in the pushing process of closing the butterfly valve, so that the contact surface is damaged, and the sealing performance is influenced;

(3) Because the sealing ring and other tight parts are preset, a larger moment is applied in the sealing process of the butterfly valve to close the butterfly valve in place, and the closing process is the process of extruding the sealing part;

(4) Impurities in the fluid are easy to remain between the sealing ring and the valve seat, the later maintenance is inconvenient, the control of gas pressure needs to be paid attention to when the valve is opened, the valve plate is easy to suddenly jet when the valve plate is just separated from the sealing ring, and lubricating oil needs to be added into a transmission shaft and the sealing ring sometimes;

(5) Because the influence such as large granule impurity extrusion, the life of seal map and disk seat is limited, needs the unscheduled maintenance, changes.

SUMMERY OF THE UTILITY MODEL

The utility model discloses make the improvement to above-mentioned technical problem, promptly the utility model aims to solve the technical problem that a seal earlier back sealed long relative life's gas butterfly valve device is provided.

In order to solve the above technical problem, the utility model discloses a technical scheme is:

a novel gas-expansion butterfly valve device is characterized in that a main body part of the gas-expansion butterfly valve device comprises a butterfly valve shell, a circular hollow inner cavity is arranged in the middle of the butterfly valve shell, and the inner cavity is used for installing and arranging a rotatable circular disc; the interior survey of interior cavity is equipped with sunken sealing ring portion, be equipped with the sealing device mount pad of "concave" font on the sunken sealing ring portion for inlay installation sealing device, sealing device is including the inflation sealing ring, the inflation sealing ring is connected with the sealing device intake pipe.

Further, the diameter of the circular hollow of the inner cavity is larger than that of the disc.

Further, the depth of the recess of the recessed seal ring portion is greater than or equal to the thickness of the expanded seal ring.

Furthermore, a disc fixing frame is fixedly connected to the back of the disc.

Furthermore, the disc fixing frame is composed of a plurality of transverse shaft supporting rods and a plurality of longitudinal fixing supporting rods, and the transverse shaft supporting rods and the longitudinal fixing supporting rods form a rectangular supporting structure.

Furthermore, a rotating shaft mounting hole part is arranged in the middle of the transverse shaft supporting rod.

Furthermore, the disc is fixedly connected with a disc rotating shaft, and the disc is driven by the disc rotating shaft to rotate.

Further, the expansion sealing ring is a circular ring structure which is hollow inside and has elasticity.

Further, the gas butterfly valve device is further provided with a 90-degree rotating cylinder, and the 90-degree rotating cylinder is connected with the butterfly valve shell through a cylinder connecting plate.

Furthermore, a rotating shaft connector is arranged in the cylinder connecting plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) In the sealing process, a gap is reserved between the valve plate and the inner cavity of the butterfly valve shell, a sealing surface or a sealing ring cannot be extruded, excessive torque does not need to be applied for propulsion, and the valve plate starts to inflate and expand after rotating to a position, so that sealing is realized, and a good protection effect is achieved on a sealing contact surface;

(2) The sealing contact surface has gaps or tiny small pits caused by corrosion and extrusion damage, the sealing performance is not influenced, the elastic expansion deformation is used for compensating, the water leakage condition is reduced, and the better sealing performance is realized

Process extrusion damage;

(3) Because the sealing is carried out after the sealing, the sealing device is very practical in the application of scenes with large particle impurities;

(4) The valve plate and the expansion sealing ring assembly have long service life, do not need frequent maintenance, have low cost, are more convenient to maintain, and have simple structure, light weight and easy rotation of the valve plate;

(5) The practicability is very strong, and the field application and popularization can be carried out.

Drawings

Fig. 1 is a schematic perspective view of a novel gas butterfly valve device according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a closed state of the novel gas butterfly valve device according to the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an open state of the novel gas butterfly valve device according to the embodiment of the present invention.

Fig. 4 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.

Fig. 5 is a sectional view B-B of fig. 3.

Fig. 6 is a schematic structural view of a butterfly valve housing of the novel gas butterfly valve device according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a disc of the novel pneumatic butterfly valve device according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of a sealing device of the novel gas butterfly valve device according to an embodiment of the present invention.

In fig. 1-8, the various components are numbered:

1: a butterfly valve housing;

1-1: an inner cavity;

1-2: a recessed sealing ring portion;

2: a disc;

2-1: a disc fixing frame;

2-1-1: a transverse shaft support bar;

2-1-2: longitudinally fixing the supporting rod;

3: a disc rotating shaft;

4: a copper sleeve;

5: a rotating shaft connector;

6: a 90-degree rotary cylinder;

7: a sealing device;

7-1: an expansion seal ring;

8: a cylinder connecting plate;

9: a sealing device mounting seat;

10: a sealing device air inlet pipe;

11: the axial stop collar of pivot.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like (or similar) reference numerals refer to the same (or similar) elements, or elements having the same (or similar) function. It should be apparent that the embodiments or examples described below are exemplary in nature and are only for the purpose of illustrating the invention and should not be construed as limiting the invention. Other forms of drawings may be derived from these drawings without inventive step to those skilled in the art.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "mounted" in the description of the present invention are to be construed broadly, and may be, for example, integrally connected, fixedly connected, or detachably connected; either directly, mechanically or electronically, or indirectly through intervening media.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

In the description of the present invention, "a plurality" or "a plurality" means two or more unless otherwise explicitly defined in the present embodiment.

The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The following disclosure provides different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of certain embodiments are described below.

As shown in figure 1, the novel gas expansion butterfly valve device comprises a butterfly valve shell 1, wherein a circular hollow inner cavity 1-1 is arranged in the middle of the butterfly valve shell 1, and the inner cavity 1-1 is used for installing and arranging a rotatable circular disc 2.

In this embodiment, the disc 2 rotates in the inner cavity 1-1 to realize the open or close state of the gas butterfly valve device.

As shown in fig. 4 and 5, with reference to fig. 6, a concave sealing ring portion 1-2 is disposed on an inner side of the inner cavity 1-1, and a concave sealing device mounting seat 9 is disposed on the concave sealing ring portion 1-2 and used for mounting a sealing device 7 in an embedded manner. Referring to fig. 8, the sealing device 7 includes an expansion sealing ring 7-1, and the expansion sealing ring 7-1 is connected with a sealing device air inlet pipe 10.

In this embodiment, the sealing device mounting seat 9, which is designed in a "concave" shape, is provided for more securely mounting the inflatable sealing ring 7-1 of the sealing device 7.

As one of the possible implementation modes, the recessed seal ring portion 1-2 and the seal device mounting seat 9 may be integrated, or may be separated, or the recessed portion of the recessed seal ring portion 1-2 is directly used to replace the seal device mounting seat 9.

The diameter of the circular hollow hole of the inner cavity 1-1 is larger than that of the disc 2. In this embodiment, the diameter of the disc 2 is slightly smaller than the diameter of the circular hollow of the inner cavity 1-1, even if the sealing ring is embedded on the periphery according to the conventional technical design, the sum of the two diameters is still slightly smaller than the diameter of the circular hollow, so as to prevent the disc 2 from contacting with the circular hollow too much during the rotation and propulsion process, and if large-particle impurities exist in the circular hollow during the driving rotation process, the disc will not be excessively squeezed during the forced propulsion process. The butterfly valve sealing degree at this moment is problematic, and then further solved through the subsequent technical scheme.

The depth of the sunken part of the sunken sealing ring part 1-2 is more than or equal to the thickness of the expansion sealing ring 7-1. In this embodiment, the expansion seal ring 7-1 is mounted on the seal device mounting seat 9 of the recessed portion of the recessed seal ring portion 1-2 in an embedded manner, and after mounting, the outer surface of the expansion seal ring 7-1 is flush with the outer surface of the recessed portion or slightly lower than the recessed portion. The design is also designed so that the expansion sealing ring 7-1 does not contact with the disc 2 too much or closely during the rotation opening or closing of the disc 2, the disc 2 does not press the expansion sealing ring 7-1 too much under the action of the external fixed driving force, and when large particles of impurities exist, the disc easily falls off from the outer sealing surface of the expansion sealing ring 7-1 during the rotation, so that the expansion sealing ring 7-1 or the disc 2 is not damaged.

As shown in fig. 7, a disc holder 2-1 is fixedly connected to the back of the disc 2. The disc fixing frame 2-1 is composed of a plurality of transverse axis supporting rods 2-1-1 and a plurality of longitudinal fixing supporting rods 2-1-2, and the transverse axis supporting rods 2-1-1 and the longitudinal fixing supporting rods 2-1-2 form a rectangular supporting structure.

In this embodiment, the disc holder 2-1 employs three transverse axis support rods 2-1-1 and two longitudinal fixing support rods 2-1-2, wherein the two transverse axis support rods 2-1-1 and the two longitudinal fixing support rods 2-1-2 form a rectangular structure. One of the three transverse axis support bars 2-1-1 is arranged in the middle area of the disc 2, is longer than the two other transverse axis support bars 2-1-1, and spans the two longitudinal fixing support bars 2-1-2.

The middle part of the transverse shaft supporting rod 2-1-1 is provided with a rotating shaft mounting hole part. As shown in fig. 1, 4 and 5, the disc 2 is fixedly connected to a disc rotating shaft 3, and the disc 2 is driven by the disc rotating shaft 3 to rotate.

In this embodiment, the disc rotating shaft 3 is disposed on the back surface of the disc 2, and the disc rotating shaft 3 passes through the rotating shaft mounting hole portion in the middle of the transverse shaft supporting rod 2-1-1 and is fixed by screws, so as to fix the disc rotating shaft 3, the disc fixing frame 2-1 and the disc 2 to each other. When the disc rotating shaft 3 rotates, the disc fixing frame 2-1 is driven to rotate, so that the disc 2 is driven to rotate, and the butterfly valve is opened or closed.

In this embodiment, the copper sleeves 4 are disposed at both ends of the disc spindle 3, and the sealing device mounting seat 9 is also wrapped with the copper sleeves 4 with different shapes.

Referring also to fig. 8, the inflatable sealing ring 7-1 is a ring-shaped structure which is hollow inside and has elasticity. In this embodiment, the inside of the expansion sealing ring 7-1 is expanded by inflation, when the air inlet pipe 10 of the sealing device is filled with high-pressure gas, the expansion sealing ring 7-1 starts to expand under the action of the air pressure, and if the butterfly valve is in a closed state, the expansion sealing ring 7-1 at this time will be tightly combined with the inner cavity 1-1 in the middle of the butterfly valve housing 1 and tightly combined with the disk 2, so as to realize the sealing of the butterfly valve.

The gas butterfly valve device is further provided with a 90-degree rotary cylinder 6, and the 90-degree rotary cylinder 6 is connected with the butterfly valve shell 1 through a cylinder connecting plate 8.

In this embodiment, a rotating shaft connector 5 is disposed in the cylinder connecting plate 8. One end of the disc rotating shaft 3 penetrates through the rotating shaft connector 5 and is connected with the 90-degree rotating cylinder 6, the 90-degree rotating cylinder 6 drives the disc rotating shaft to rotate under the action of external force, and a rotating shaft axial limiting sleeve 11 is further arranged at the other end of the disc rotating shaft 3.

The utility model discloses a theory of operation:

the gas butterfly valve device is through the turned angle of video disc 2 realizes opening or closing of butterfly valve, works as video disc 2 is in under the drive of video disc pivot 3, when going to 90 degrees, realizes the full open of butterfly valve can carry out the drainage or the blowdown of external pipeline this moment, works as when video disc 2 turns back to 0 degree, realizes the totally closed of butterfly valve, and external pipeline drainage this moment is sealed.

The driving force of the disc rotating shaft 3 is provided by the 90-degree rotary cylinder 6, when the disc 2 is to be rotated back to the inner cavity 1-1 of the butterfly valve shell 1, the disc is prepared to be sealed and sealed, when the disc 2 and the contact surface of the inner cavity 1-1 have large-particle impurities, such as sand, aquaculture feed, excrement and the like, if a traditional sealing ring and a traditional sealing gasket are adopted, the disc can strongly push to seal and compress the impurities and simultaneously reverse to the sealing ring and the sealing gasket under the action of pressure, and the damage to the sealing ring and the sealing gasket is very large and even damaged.

The present patent application is such that the disc 2 is rotated into position to a sealing orientation and that during the rotation there is little or no contact between the expanding seal ring 7-1 and the disc 2 and the closing process does not damage the expanding seal ring 7-1. After the disc 2 rotates to the right position, high-pressure gas is filled in through the air inlet pipe 10 of the sealing device, the expansion sealing ring 7-1 is expanded under pressure, and under the matching of the mounting seat 9 of the sealing device, the expansion sealing ring 7-1 expands towards the center direction of the inner cavity 1-1, so that the expansion sealing ring 7-1 is tightly connected and sealed with the disc 2. Thereby realizing the first sealing and the second sealing of the butterfly valve.

Meanwhile, when the disc 2 and the inner side of the inner cavity 1-1 are damaged by small recesses and the like, water leakage can be caused due to untight sealing, and the expansion sealing ring 7-1 is made of an elastic material and can deform and expand under the action of high-pressure gas, so that the untight sealing condition can be compensated to a certain extent.

The utility model provides a pair of novel gas butterfly valve device, in the sealing process, the valve block is gapped with the interior cavity of butterfly valve shell, can not extrude sealed face or sealing ring, need not apply too big moment and impel, waits the rotatory back that arrives of valve block, begins to inflate the inflation, realizes sealedly, plays fine guard action to sealed contact surface.

The utility model provides a pair of novel gas butterfly valve device, sealed contact surface have the clearance or have little because of corroding, extrude the little hollow that the damage caused, can not influence the leakproofness, compensate through elastic expansion deformation, reduce the condition of leaking, realize better sealing performance.

The utility model provides a pair of novel gas butterfly valve device, because seal the back earlier and seal, in using to the scene that has large granule impurity, it is very practical.

The utility model provides a pair of novel gas butterfly valve device, the valve block is long-lived with the inflation sealing ring subassembly to need not frequent maintenance, it is with low costs, it is also more convenient when maintaining moreover, simple structure, light in weight, valve block rotate easily.

The utility model provides a pair of novel gas butterfly valve device, the practicality is very strong, can carry out the on-the-spot application and popularization.

The above description is only for the purpose of illustrating the technical concept and features of the present invention, and the purpose of the present invention is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, but not to limit the protection scope of the present invention. All the equivalent changes and modifications made according to the claims of the present invention shall belong to the coverage of the present invention.

Claims (10)

1. The novel gas-expansion butterfly valve device is characterized in that the main body part of the gas-expansion butterfly valve device comprises a butterfly valve shell (1), a circular hollow inner cavity (1-1) is arranged in the middle of the butterfly valve shell (1), and the inner cavity (1-1) is used for installing and arranging a rotatable circular disc (2);

the inner measurement of the inner cavity (1-1) is provided with a concave sealing ring part (1-2), the concave sealing ring part (1-2) is provided with a concave sealing device mounting seat (9) for mounting a sealing device (7) in an embedded mode, the sealing device (7) comprises an expansion sealing ring (7-1), and the expansion sealing ring (7-1) is connected with a sealing device air inlet pipe (10).

2. A new gas tension butterfly valve device, according to claim 1, characterized in that the diameter of the circular hollow of said inner cavity (1-1) is greater than the diameter of said disc (2).

3. A new gas-tensioned butterfly valve device according to claim 1, characterised in that the depth of the recess of the recessed sealing ring portion (1-2) is greater than or equal to the thickness of the expansion sealing ring (7-1).

4. The novel gas butterfly valve device according to claim 1, characterized in that a disk holder (2-1) is fixedly connected to the back of the disk (2).

5. The novel gas butterfly valve device according to claim 4, wherein the disk holder (2-1) is composed of a plurality of transverse shaft support rods (2-1-1) and a plurality of longitudinal fixing support rods (2-1-2), and the transverse shaft support rods (2-1-1) and the longitudinal fixing support rods (2-1-2) form a rectangular support structure.

6. The novel gas butterfly valve device according to claim 5, characterized in that the middle part of the transverse shaft support rod (2-1-1) is provided with a shaft mounting hole part.

7. The novel air-expanding butterfly valve device according to claim 1, wherein a disk rotating shaft (3) is fixedly connected to the disk (2), and the disk (2) is driven by the disk rotating shaft (3) to rotate.

8. A new gas expansion butterfly valve device, according to claim 1, characterized in that said expansion sealing ring (7-1) is a ring-shaped structure with hollow inside and elasticity.

9. A novel gas-actuated butterfly valve device according to claim 1, characterised in that it is further arranged with a 90 ° rotary cylinder (6), said 90 ° rotary cylinder (6) being connected with said butterfly valve housing (1) by means of a cylinder connection plate (8).

10. The novel gas butterfly valve device according to claim 9, characterized in that a rotating shaft connector (5) is arranged in the cylinder connecting plate (8).

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