CN218564417U - Eccentric dynamic balance butterfly valve - Google Patents

Abstract

The utility model relates to an eccentric butterfly valve technical field, and an eccentric dynamic balance butterfly valve is disclosed, which comprises a valve body, the sealing washer, main butterfly plate, the clamp plate circle, the valve shaft, inside and main butterfly plate one side threaded connection of clamp plate circle has adjusting screw, the sealing washer passes through clamp plate circle swing joint in main butterfly plate one side, main butterfly plate cup joints in the valve shaft outer wall, the back of main butterfly plate is provided with the swing rocking arm, the valve shaft outer wall is provided with the parallel key, the inside bell mouth that has seted up of main butterfly plate, fixed connection has the valve clack in the bell mouth, adjusting screw runs through the clamp plate circle and extends to inside the main butterfly plate, be convenient for play the purpose of location installation to the clamp plate circle, main butterfly plate back fixedly connected with support, the valve shaft passes the support. The eccentric dynamic balance butterfly valve has the characteristics of simple structure, rapid opening and closing, ninety-degree reciprocating rotation, small driving moment and the like, and is used for cutting off and switching on; the medium in the regulating pipeline has good fluid control characteristic and closing sealing performance, and the streamlined design of the butterfly plate ensures that the fluid resistance loss is small.

Description

Eccentric dynamic balance butterfly valve

Technical Field

The utility model relates to an eccentric butterfly valve technical field specifically is eccentric dynamic balance butterfly valve.

Background

The eccentric butterfly valve is divided into a single eccentric butterfly valve, a double eccentric butterfly valve, a triple eccentric butterfly valve and a variable eccentric butterfly valve. As opposed to a concentric butterfly valve. The structure of the butterfly valve is characterized in that the axis of the valve rod deviates from the center of the butterfly plate, so that the upper end and the lower end of the butterfly plate do not become a rotary axis any more, the butterfly valve is dispersed, and the excessive extrusion of the upper end and the lower end of the butterfly plate and the valve seat is reduced.

The common eccentric butterfly valve has certain pressure when opening the valve, and does not have good fluid control and closes sealed performance, and fluidic resistance has certain damage, and the valve shaft is corroded easily in long-time use to reduce the practicality of device, reduce its life, bring certain inconvenience for work.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an eccentric dynamic balance butterfly valve 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: eccentric dynamic balance butterfly valve, including valve body, sealing washer, main butterfly plate, clamp plate circle, valve shaft, the inside and main butterfly plate one side threaded connection of clamp plate circle has adjusting screw, the sealing washer passes through clamp plate circle swing joint in main butterfly plate one side, main butterfly plate cup joints in the valve shaft outer wall, the back of main butterfly plate is provided with the swing rocking arm, the valve shaft outer wall is provided with the parallel key, be provided with the round pin axle on the swing rocking arm.

Preferably, a tapered hole is formed in the main butterfly plate, a valve clack is fixedly connected in the tapered hole, and the adjusting screw penetrates through the pressing plate ring and extends into the main butterfly plate, so that the purpose of positioning and mounting the pressing plate ring is facilitated.

Preferably, the back of the main butterfly plate is fixedly connected with a support, the valve shaft penetrates through the support, and a fixing screw is connected to the inner thread of the swing rocker arm.

Preferably, the swing rocker arm is connected with the valve shaft through a flat key, and the flat key is provided with two flat keys, so that the swing rocker arm and the valve shaft can work better.

Preferably, the valve clack is connected with the swing rocker arm through a pin shaft, and the valve body is provided with a positioning sleeve.

Preferably, the sealing ring is closely attached to and contacted with one side of the pressing plate ring on one side, and the sealing ring is closely attached to and contacted with one side of the main butterfly plate on one side away from the pressing plate ring, so that the sealing effect is convenient to play, and the sealing ring can work better.

Preferably, an adjusting spring is fixedly connected above the swing rocker arm, and the adjusting spring is movably connected to one side of the main butterfly plate.

Compared with the prior art, the utility model provides an eccentric dynamic balance butterfly valve possesses following beneficial effect:

1. the eccentric dynamic balance butterfly valve has the characteristics of simple structure, rapid opening and closing, ninety-degree reciprocating rotation, small driving moment and the like, and is used for cutting off and switching on; the medium in the regulating pipeline has good fluid control characteristic and closing sealing performance, the streamlined design of the butterfly plate ensures that the fluid resistance loss is small, the valve is opened after balancing pressure difference before opening, the friction force is small, the energy is saved, the consumption is reduced, and the service life is long.

2. This eccentric dynamic balance butterfly valve, valve shaft are for leading to the structural design of pole, through thermal refining, have good comprehensive mechanical properties and corrosion resistance, and the resistance to abrasion, the valve rod is rotatory when opening and close through the lever principle of swing rocking arm, and the valve clack is at first opened and close when opening or closing, then withstands main butterfly plate and makes the rotation of zero degree or ninety degrees to the release that realizes pressure differential reaches and opens and close the moment of torsion and reduce and open steady effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced 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 the drawings without inventive labor:

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

FIG. 2 is a cross-sectional view taken at A of FIG. 1;

FIG. 3 is an enlarged view of the structure at C in FIG. 2;

fig. 4 is an enlarged schematic view of B in fig. 2.

In the figure: 1. a valve body; 2. a seal ring; 3. a platen ring; 4. adjusting the screw; 5. a master butterfly plate; 6. a swing rocker arm; 7. fixing screws; 8. adjusting the spring; 9. a flat bond; 10. a valve shaft; 11. a positioning sleeve; 12. a valve flap; 13. and (7) a pin shaft.

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 present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. 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.

Including valve body 1, sealing washer 2, main butterfly plate 5, clamp plate circle 3, valve shaft 10, 3 inside and 5 one side threaded connection of main butterfly plate of clamp plate circle have adjusting screw 4, and sealing washer 2 is in 5 one sides of main butterfly plate through 3 swing joint of clamp plate circle, and main butterfly plate 5 cup joints in 10 outer walls of valve shaft, and the back of main butterfly plate 5 is provided with swing rocking arm 6, and 10 outer walls of valve shaft are provided with parallel key 9, are provided with round pin axle 13 on the swing rocking arm 6.

The inside bell mouth that has seted up of main butterfly plate 5, the fixedly connected with valve clack 12 in the bell mouth, adjusting screw 4 run through clamp plate circle 3 and extend to inside main butterfly plate 5, are convenient for play the purpose of location installation to clamp plate circle 3.

The back of the main butterfly plate 5 is fixedly connected with a support, the valve shaft 10 penetrates through the support, and the inner part of the swing rocker arm 6 is in threaded connection with a fixing screw 7.

The swing rocker arm 6 is connected with the valve shaft 10 through flat keys 9, and the number of the flat keys 9 is two, so that the swing rocker arm 6 and the valve shaft 10 can work better.

The valve clack 12 is connected with the swing rocker arm 6 through a pin shaft 13, and the valve body 1 is provided with a positioning sleeve 11.

One side of the sealing ring 2 is in close fitting contact with one side of the pressure plate ring 3, one side of the sealing ring 2, which is far away from the pressure plate ring 3, is in close fitting contact with one side of the main butterfly plate 5, so that the sealing effect is convenient to play, and the sealing ring 2 can work better.

An adjusting spring 8 is fixedly connected above the swing rocker arm 6, and the adjusting spring 8 is movably connected to one side of the main butterfly plate 5.

In the actual operation process, when the device is used, the valve shaft 10 rotates clockwise and simultaneously drives the swing rocker arm 6 and the valve clack 12 to rotate to the valve position indicating zero degree, the main butterfly plate 5, the valve clack 12 and the sealing ring 2 are sealed in a pre-tightening mode, the valve is completely closed, the valve shaft 10 rotates counterclockwise and simultaneously drives the swing rocker arm 6 and the valve clack 12 to rotate to the gap distance between the adjusting spring 8 and the main butterfly plate 5 and simultaneously open the valve clack 12, partial medium pressure is released, the torque of the valve shaft 10 is suddenly reduced at the moment, and the upper head of the swing rocker arm 6 rotates to push the main butterfly plate to the valve position indicating ninety degree to open the valve completely.

The valve clack 1 is connected with the swing rocker arm 6 through a pin shaft 13, when the valve is in a closed position, a distance exists between the front end face of the swing rocker arm 6 and the back face of the main butterfly plate 5, the valve is opened after pressure difference is balanced before the valve is opened, friction is small, energy is saved, consumption is reduced, and the service life is long.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims (7)

1. Eccentric dynamic balance butterfly valve, including valve body (1), sealing washer (2), main butterfly plate (5), clamp plate circle (3), valve shaft (10), its characterized in that: the improved butterfly valve is characterized in that an adjusting screw (4) is connected with one side of the main butterfly plate (5) in the pressing plate ring (3) in a threaded mode, the sealing ring (2) is movably connected to one side of the main butterfly plate (5) through the pressing plate ring (3), the outer wall of the valve shaft (10) is sleeved on the main butterfly plate (5), the back face of the main butterfly plate (5) is provided with the swing rocker arm (6), the outer wall of the valve shaft (10) is provided with a flat key (9), and the swing rocker arm (6) is provided with a pin shaft (13).

2. The eccentric dynamically balanced butterfly valve of claim 1, wherein: the butterfly valve is characterized in that a tapered hole is formed in the main butterfly plate (5), a valve clack (12) is fixedly connected in the tapered hole, and the adjusting screw (4) penetrates through the pressing plate ring (3) and extends into the main butterfly plate (5).

3. The eccentric dynamically balanced butterfly valve of claim 1, wherein: the reverse side of the main butterfly plate (5) is fixedly connected with a support, the valve shaft (10) penetrates through the support, and a fixing screw (7) is connected to the inner thread of the swing rocker arm (6).

4. The eccentric dynamically balanced butterfly valve of claim 1, wherein: the swing rocker arm (6) is connected with the valve shaft (10) through flat keys (9), and the number of the flat keys (9) is two.

5. The eccentric dynamically balanced butterfly valve of claim 2, wherein: the valve clack (12) is connected with the swing rocker arm (6) through a pin shaft (13), and a positioning sleeve (11) is arranged on the valve body (1).

6. The eccentric dynamically balanced butterfly valve of claim 1, wherein: one side of the sealing ring (2) is in close fitting contact with one side of the pressure plate ring (3), and one side of the sealing ring (2), which is far away from the pressure plate ring (3), is in close fitting contact with one side of the main butterfly plate (5).

7. The eccentric dynamically balanced butterfly valve of claim 1, wherein: and an adjusting spring (8) is fixedly connected above the swing rocker arm (6), and the adjusting spring (8) is movably connected to one side of the main butterfly plate (5).

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