CN212536700U

CN212536700U - Bidirectional sealed three-eccentric butterfly valve

Info

Publication number: CN212536700U
Application number: CN202021261003.8U
Authority: CN
Inventors: 黎家冲
Original assignee: Chongqing Jievalve Co ltd
Current assignee: Chongqing Jievalve Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-02-12
Anticipated expiration: 2030-07-02

Abstract

The utility model relates to a butterfly valve technical field specifically is a three eccentric butterfly valves of two-way sealed, including the valve body, valve body lateral wall top and bottom are equipped with top base and bottom base respectively, rotate between top base and bottom base and be connected with the valve shaft, the valve body inside wall is equipped with the disk seat, the cover has the eccentric block on the valve shaft, eccentric block one side even has the valve plate, open the valve plate both sides has two mounting grooves, ann has first seal ring and second seal ring respectively on the mounting groove, the first seal ring and second seal ring outside are equipped with first clamp plate and the second clamp plate of locking on the valve plate through the screw respectively. This three eccentric butterfly valves of two-way sealed formula, first seal ring and second seal ring laminate with the disk seat simultaneously, carry out two-way seal, improve sealed effect, damage back at a seal ring, another can also play the sealing action, and first seal ring and second seal ring are fixed through first clamp plate and second clamp plate pressfitting respectively, are convenient for change after it damages.

Description

Bidirectional sealed three-eccentric butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a three eccentric butterfly valves of two way seal formula.

Background

The butterfly valve is a valve whose valve plate is a disc, and can rotate around the valve shaft to open and close, and can be used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry, oil, liquid metal, radioactive media and the like, and mainly plays a role in cutting off and throttling on a pipeline, the axis of a valve rod in the butterfly valve is deviated from the center of the disc and the center of a body at the same time, and the butterfly valve with an oblique sealing pair becomes a triple eccentric butterfly valve;

however, the existing three-eccentric center butterfly valve is generally provided with a pair of sealing pairs only in one direction, the sealing effect is poor, and meanwhile, after the sealing pairs are partially damaged, water can be seriously seeped, the flow blocking effect cannot be achieved, and the normal use of the three-eccentric center butterfly valve is further influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three eccentric butterfly valves of two-way sealed 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 bidirectional sealed type three-eccentric butterfly valve comprises a valve body, wherein a top base which is an integrated forming mechanism with a valve body is arranged at the top of the outer side wall of the valve body, a first shaft hole communicated with the interior of the valve body is formed in the top of the top base, a bottom base which is an integrated forming mechanism with the valve body is arranged at the bottom of the outer side wall of the valve body, a second shaft hole communicated with the interior of the valve body is formed in the bottom of the bottom base, the second shaft hole and the first shaft hole are positioned on the same straight line, a valve shaft is rotatably connected between the first shaft hole and the second shaft hole, an end cover is connected to the bottom of the bottom base, the bottom of the valve shaft is attached to the end cover, a valve seat is arranged at the inner side end of the valve shaft, an eccentric block is fixedly sleeved on the valve shaft and positioned in the valve body, a, first seal ring and second seal ring lateral wall all laminate mutually with the disk seat inboard wall, the first seal ring outside is equipped with the first clamp plate of fixing on the valve plate through screw locking, the second seal ring outside is equipped with the second clamp plate of fixing on the valve plate through screw locking, the transmission case is installed at top base top, be equipped with drive mechanism in the transmission case, drive mechanism includes the pivot of being connected rather than rotating, the inboard terminal coaxial coupling of pivot has drive bevel gear, the valve shaft top extends to in the transmission case and its top coaxial coupling has driven bevel gear, driven bevel gear and drive bevel gear intermeshing, the terminal coaxial coupling in the pivot outside has the hand wheel.

Preferably, two symmetrical connecting flanges which are in an integrated structure with the valve body are arranged on two sides of the valve body.

Preferably, the bottom edge of the first shaft hole and the top edge of the second shaft hole are both provided with grooves, and the grooves are filled with fillers.

Preferably, the end cover is locked and fixed on the bottom base through bolts and nuts.

Preferably, the bottom of the transmission case is provided with a mounting flange, and the mounting flange is locked and fixed on the top base through bolts and nuts.

Preferably, the top of the transmission case is provided with an opening, and the top of the transmission case is provided with a case cover which is locked and fixed through screws.

Preferably, a through hole is formed in one side of the transmission case, a ball bearing is installed in the through hole, and the rotating shaft is fixed in an inner ring of the ball bearing.

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

this three eccentric butterfly valves of two-way sealed formula, the mounting groove has all been seted up in valve plate both sides, be equipped with first seal ring and second seal ring in the mounting groove respectively, when the valve plate is closed, laminate with the disk seat simultaneously through first seal ring and second seal ring, carry out two-way seal, improve sealed effect, damage the back at one of them seal ring simultaneously, another seal ring can also play sealed effect, guarantee its normal use, and first seal ring and second seal ring are fixed through first clamp plate and second clamp plate pressfitting respectively, first clamp plate and second clamp plate pass through screw locking fixed, damage the back at first seal ring and second seal ring, be convenient for change.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

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

FIG. 3 is a schematic structural view of the valve plate of the present invention;

FIG. 4 is a schematic structural view of the transmission case of the present invention;

fig. 5 is a schematic structural diagram of the middle transmission mechanism of the present invention.

In the figure:

1. a valve body; 10. a connecting flange; 11. a top base; 110. a first shaft hole; 12. a bottom base; 120. a second shaft hole; 13. a filler;

2. a valve shaft;

3. a valve seat;

4. an eccentric block;

5. a valve plate; 50. mounting grooves; 51. a first sealing gasket; 52. a second sealing gasket; 53. a first platen; 54. a second platen;

6. an end cap;

7. a transmission case; 70. a box cover; 71. installing a flange; 72. a ball bearing;

8. a transmission mechanism; 80. a rotating shaft; 81. a drive bevel gear; 82. a driven bevel gear; 83. a handwheel.

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 work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-5, the present invention provides a technical solution:

a bidirectional sealed three-eccentric butterfly valve comprises a valve body 1, wherein the top of the outer side wall of the valve body 1 is provided with a top base 11 which is an integrated forming mechanism with the valve body, the top of the top base 11 is provided with a first shaft hole 110 communicated with the inside of the valve body 1, the bottom of the outer side wall of the valve body 1 is provided with a bottom base 12 which is an integrated forming mechanism with the valve body, the bottom of the bottom base 12 is provided with a second shaft hole 120 communicated with the inside of the valve body 1, the second shaft hole 120 and the first shaft hole 110 are positioned on the same straight line, a valve shaft 2 is rotatably connected between the first shaft hole 110 and the second shaft hole 120, the bottom of the bottom base 12 is connected with an end cover 6, the bottom of the valve shaft 2 is attached to the end cover 6, the inner side wall of the valve body 1 is provided with a valve seat 3 at, be equipped with drive mechanism 8 in transmission case 7, drive mechanism 8 includes rather than rotating the pivot 80 of being connected, the inboard terminal coaxial coupling of pivot 80 has drive bevel gear 81, 2 tops of valve shaft extend to in transmission case 7 and its top coaxial coupling have driven bevel gear 82, driven bevel gear 82 and drive bevel gear 81 intermeshing, the terminal coaxial coupling in pivot 80 outside has hand wheel 83, when using, drive pivot 80 and drive bevel gear 81 rotation through rotating hand wheel 83, the rethread drives driven bevel gear 82 rather than the meshing and rotates, valve shaft 2 rotates with it and drives eccentric block 4 and valve plate 5 and rotate, the opening and shutting of control valve plate 5.

In this embodiment, two symmetrical mounting grooves 50 are formed on two sides of the valve plate 5, a first sealing washer 51 and a second sealing washer 52 are respectively mounted on the two mounting grooves 50, outer side walls of the first sealing washer 51 and the second sealing washer 52 are respectively attached to inner side walls of the valve seat 3, a first pressing plate 53 fixed on the valve plate 5 through screw locking is arranged on the outer side of the first sealing washer 51, a second pressing plate 54 fixed on the valve plate 5 through screw locking is arranged on the outer side of the second sealing washer 52, the first sealing washer 51 and the second sealing washer 52 are both made of rubber, when the valve plate 5 is closed, the first sealing washer 51 and the second sealing washer 52 are both attached to inner side walls of the valve seat 3 for bidirectional sealing, thereby improving the sealing effect and further preventing water seepage, when one of the first sealing washer 51 and the second sealing washer 52 is damaged, the other sealing washer can also, the first sealing washer 51 and the second sealing washer 52 are prevented from being damaged, and meanwhile, the first sealing washer 51 and the second sealing washer 52 are respectively fixed through pressing of the first pressing plate 53 and the second pressing plate 54, so that replacement after damage is facilitated.

In addition, the bottom edge in first shaft hole 110 and the top edge in second shaft hole 120 all set up flutedly, are equipped with filler 13 in the recess, increase the leakproofness of valve shaft 2 and first shaft hole 110 and second shaft hole 120 junction through filler 13, prevent the infiltration.

Further, two symmetrical connecting flanges 10 which are integrally formed are arranged on two sides of the valve body 1, so that the valve body 1 can be conveniently installed on a pipeline through the connecting flanges 10.

Secondly, an opening is formed in the top of the transmission case 7, and a case cover 70 which is locked and fixed through screws is installed on the top of the transmission case 7, so that the case cover 70 can be conveniently opened at a later stage, and the interior of the transmission case 7 can be maintained; a through hole is formed in one side of the transmission case 7, the ball bearing 72 is installed in the through hole, and the rotating shaft 80 is fixed in an inner ring of the ball bearing 72, so that the rotating sensitivity of the rotating shaft 80 is improved, and the rotating shaft is prevented from being blocked.

Specifically, the end cover 6 is locked and fixed on the bottom base 12 through bolts and nuts, so that the installation and the disassembly are convenient.

Before the bidirectional sealed type three-eccentric butterfly valve is used, a worker firstly checks the integrity of the three-eccentric butterfly valve and whether the connection of each part is firm; when in use, the valve body 1 is firstly installed on a pipeline through the connecting flange 10; then when valve plate 5 needs to be closed, the staff manually rotates hand wheel 83 to drive rotating shaft 80 and drive bevel gear 81 to rotate, then drive bevel gear 81 drives driven bevel gear 82 engaged with it to rotate, valve shaft 2 rotates along with it to drive eccentric block 4 and valve plate 5 to rotate, valve plate 5 is closed, and at this moment, first seal ring 51 and second seal ring 52 are all laminated with the inner side wall of valve seat 3, carry out two-way sealing, improve sealed effect.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a three eccentric butterfly valves of two-way sealed, includes valve body (1), its characterized in that: the valve is characterized in that a top base (11) which is an integrated forming mechanism with the valve body (1) is arranged at the top of the outer side wall of the valve body (1), a first shaft hole (110) communicated with the interior of the valve body (1) is formed in the top of the top base (11), a bottom base (12) which is an integrated forming mechanism with the valve body is arranged at the bottom of the outer side wall of the valve body (1), a second shaft hole (120) communicated with the interior of the valve body (1) is formed in the bottom of the bottom base (12), the second shaft hole (120) and the first shaft hole (110) are located on the same straight line, a valve shaft (2) is rotatably connected between the first shaft hole (110) and the second shaft hole (120), an end cover (6) is connected to the bottom of the bottom base (12), the bottom of the valve shaft (2) is attached to the end cover (6), a valve seat (3) is arranged at the inner side wall of the, one side of the eccentric block (4) is connected with a valve plate (5), two symmetrical mounting grooves (50) are formed in two sides of the valve plate (5), a first sealing washer (51) and a second sealing washer (52) are respectively mounted on the two mounting grooves (50), the outer side walls of the first sealing washer (51) and the second sealing washer (52) are respectively attached to the inner side wall of the valve seat (3), a first pressing plate (53) fixed on the valve plate (5) through screw locking is arranged on the outer side of the first sealing washer (51), a second pressing plate (54) fixed on the valve plate (5) through screw locking is arranged on the outer side of the second sealing washer (52), a transmission case (7) is mounted at the top of the top base (11), a transmission mechanism (8) is arranged in the transmission case (7), and the transmission mechanism (8) comprises a rotating shaft (80) rotatably connected with the transmission, the end coaxial coupling in the inboard of pivot (80) has drive bevel gear (81), valve shaft (2) top extend to in transmission case (7) and its top coaxial coupling has driven bevel gear (82), driven bevel gear (82) and drive bevel gear (81) intermeshing, the end coaxial coupling in the pivot (80) outside has hand wheel (83).

2. The bidirectional sealed triple offset butterfly valve of claim 1, wherein: two symmetrical connecting flanges (10) which are in an integrated structure with the valve body (1) are arranged on two sides of the valve body.

3. The bidirectional sealed triple offset butterfly valve of claim 1, wherein: grooves are formed in the bottom edge of the first shaft hole (110) and the top edge of the second shaft hole (120), and filling materials (13) are arranged in the grooves.

4. The bidirectional sealed triple offset butterfly valve of claim 1, wherein: the end cover (6) is locked and fixed on the bottom base (12) through bolts and nuts.

5. The bidirectional sealed triple offset butterfly valve of claim 1, wherein: a mounting flange (71) is arranged at the bottom of the transmission case (7), and the mounting flange (71) is locked and fixed on the top base (11) through bolts and nuts.

6. The bidirectional sealed triple offset butterfly valve of claim 1, wherein: the top of the transmission case (7) is provided with an opening, and the top of the transmission case (7) is provided with a case cover (70) which is locked and fixed through screws.

7. The bidirectional sealed triple offset butterfly valve of claim 1, wherein: a through hole is formed in one side of the transmission case (7), a ball bearing (72) is installed in the through hole, and the rotating shaft (80) is fixed in an inner ring of the ball bearing (72).