CN210344316U - Butterfly valve - Google Patents

Abstract

The utility model relates to a butterfly valve, which comprises a valve body, an actuator and a blade, wherein the blade is in transmission connection with the actuator through a central shaft, the middle part of the blade is provided with a mounting groove processed by a bending process, and the central shaft is arranged in the mounting groove; the surface of the blade is provided with a reinforcing rib, and the central shaft is positioned between the mounting groove and the reinforcing rib; the periphery of the blade is fixedly provided with a sealing ring, and a position of the valve body corresponding to the closing state of the blade is provided with a limiting plate. The utility model adopts high-quality stainless steel as the blade, and is formed by processing the bending plate with small deformation, thereby ensuring the flatness, precision and strength of the blade and being simple to process and manufacture; the mounting groove is sealed closed with the center pin, and is sealed effectual, combines the strengthening rib, avoids the blade to warp. The sealing ring is made of high-temperature-resistant sealing rubber, so that the sealing effect is better; the central shaft is easy to disassemble and assemble. The limiting plate enables the blade to have a proper operation space, and the blade is prevented from rotating excessively. The utility model discloses simple structure, easily processing, long service life, stable performance.

Description

Butterfly valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a butterfly valve.

Background

The common gate valve products can not meet the requirements of sealing and environmental protection because of the problem of structural materials. The following problems exist in a large number of current common gate valves:

firstly, in the aspect of sealing performance, the use effect is not ideal, and due to the elasticity of materials and other reasons, the flatness cannot be ensured in the construction process, so that the deformation of a sealing surface is not uniform in later use, and the expected sealing effect cannot be achieved.

Secondly, there is the problem in the aspect of the selection of material, and similar butterfly valve workplace temperature is higher on the market, and during normal work, because the temperature is higher, leads to the expend with heat and contract with cold of material serious deformation, and the most common problem is that the inner seal face after the deformation blocks rotating vane, and then light causes the unstable parameter confusion of equipment, and then serious incident leads to, because the incident takes place and need not open when opening urgently.

Thirdly, the conventional butterfly valve is difficult to construct, complex in machining process, high in machining cost and poor in using effect, and the construction precision cannot be guaranteed. In the aspect of subsequent use, inconvenient, the too big leakproofness of processing preformed gap is not good, and the valve can be switched on and off with very big power often to the undersize, because the machining precision is poor, spare part wearing and tearing are serious, and life is low. The structure is complex and the maintenance is inconvenient.

On the basis and background, technicians develop a special butterfly valve, which has novel structure and obviously improved sealing performance and cost compared with other similar products, and fundamentally solves the problems of blade clamping stagnation and sealing performance. And the structure is simple, the appearance is attractive, the processing cost is relatively reduced, and the quality can be better ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a butterfly valve that stable performance and leakproofness are good is provided.

In order to solve the technical problem, the technical scheme of the utility model is that: a butterfly valve comprises a valve body and an actuator, wherein a blade matched with the valve body is installed in the valve body, the blade is in transmission connection with the actuator through a central shaft, an installation groove processed through a bending process is formed in the middle of the blade, the shape of the installation groove is matched with that of the central shaft, the central shaft is installed in the installation groove, and one end of the central shaft penetrates through the valve body and is connected with the actuator; reinforcing ribs are arranged on the surfaces of the blades, which are on the same side as the opening of the mounting groove, the reinforcing ribs stride over the opening of the mounting groove, and the central shaft is positioned between the mounting groove and the reinforcing ribs; the periphery of blade is fixed with the sealing washer, correspond on the valve body the position of blade closed condition be equipped with the limiting plate that the sealing washer combines.

Preferably, the blade is made of stainless steel.

As a preferable technical scheme, a clamping groove which is consistent with the extending direction of the reinforcing rib is arranged on the central shaft, two ends of the clamping groove are opened, and the reinforcing rib penetrates through the clamping groove.

As a preferred technical scheme, the number of the reinforcing ribs and the clamping grooves is multiple.

As a preferable technical scheme, the shape of the limiting plate is an arc, and the radian of the arc is pi.

According to an optimal technical scheme, the number of the limiting plates is two, the two limiting plates are respectively located at two sides of the valve body and correspond to the closing positions of the blades, and when the blades reach the closing positions, the limiting plates block the blades from rotating.

Since the technical scheme is used, the beneficial effects of the utility model are that: the utility model adopts high-quality stainless steel as the blade, and one bending plate is precisely processed to reduce welding deformation, thereby greatly increasing the strength of the blade and ensuring the sealing precision; the flatness, the precision and the strength of the blade are guaranteed through the integral bending process, and the blade is simpler and more feasible to process and manufacture.

The blade is bent the design and is formed mounting groove and the sealed closure of center pin, and sealed effect is obvious, combines the strengthening rib, avoids the blade deformation of operation in-process.

The sealing washer chooses for use the fixed mode that highly inseparable high temperature resistant sealing rubber replaces silica gel E type strip and compresses tightly the backing plate, and inside is more closely knit, and sealed effect is better.

Different reinforcing ribs and blade welding are reasonably selected according to the size of the valve body, the use strength is met, and deformation in the rotating process of the blade is avoided.

The central shaft is an integral central shaft, one end of the central shaft is connected with the actuator, the design is compact, the operation is coherent, and the disassembly and the assembly are easy.

The limiting plate enables the blade to have a proper operation space, and the blade is prevented from rotating excessively.

The utility model has the advantages of simple overall structure, easily processing, long service life, stable performance, through putting into production and using, prove the reliability height, stability is strong. The action control is accurate and efficient in the aspect of quick response, and safety accidents are effectively avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 inventive exercise.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the construction of the blade of FIG. 1;

FIG. 3 is a top view of FIG. 2;

in the figure: 1-a valve body; 2-an actuator; 3-a blade; 31-a mounting groove; 4-central axis; 41-card slot; 5-reinforcing ribs; 6-sealing ring; 7-limiting plate.

Detailed Description

As shown in fig. 1 to 3, the butterfly valve comprises a valve body 1 and an actuator 2, wherein a blade 3 matched with the valve body 1 is installed in the valve body 1, and preferably, the blade 3 is made of stainless steel.

The blade 3 is in transmission connection with the actuator 2 through a central shaft 4, the middle part of the blade 3 is provided with a mounting groove 31 processed by a bending process, the shape of the mounting groove 31 is matched with that of the central shaft 4, the central shaft 4 is mounted in the mounting groove 31, and one end of the central shaft 4 penetrates through the valve body 1 and is connected with the actuator 2; the surface of the blade 3 on the same side with the opening of the mounting groove 31 is provided with a reinforcing rib 5, the reinforcing rib 5 spans over the opening of the mounting groove 31, and the central shaft 4 is positioned between the mounting groove 31 and the reinforcing rib 5; the periphery of the blade 3 is fixedly provided with a sealing ring 6, the sealing ring is tightly combined with the surface of the blade, and the blade is not easy to deform and break away, and has good sealing property.

And a position of the valve body 1 corresponding to the closing state of the blade 3 is provided with a limit plate 7 combined with the sealing ring 6.

In order to facilitate the disassembly and the fixation, the central shaft 4 is provided with a clamping groove 41 which is consistent with the extending direction of the reinforcing ribs 5, two ends of the clamping groove 41 are opened, and the reinforcing ribs 5 penetrate through the clamping groove 41.

Preferably, the number of the reinforcing ribs 5 and the locking grooves 41 is plural.

In order to facilitate the combination with the blade 3 to enhance the sealing effect, the shape of the limiting plate 7 is an arc, and the radian of the arc is pi.

The quantity of limiting plate 7 is two, and two limiting plates 7 are located the closed position that the valve body 1 both sides correspond blade 3 respectively, and limiting plate 7 hinders blade 3 and rotates when the blade reachs closed position, avoids the blade to rotate excessively.

In this embodiment, blade 3 anticlockwise rotation, the butterfly valve is opened, clockwise rotation, the butterfly valve is closed, and when closing, two limiting plates 7 respectively with blade 3's front and reverse side joint, played limiting displacement and improved the leakproofness of blade again promptly.

In this embodiment, the actuator and the valve body both belong to the prior art, and the connection of the central shaft and the actuator and the valve body, and the control of the rotation of the central shaft by the actuator are also common technical means in the prior art, so that the descriptions in this embodiment are omitted.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a butterfly valve, includes valve body and executor, install in the valve body rather than the blade of looks adaptation, the blade pass through the center pin with the executor transmission is connected its characterized in that: the middle part of the blade is provided with a mounting groove processed by a bending process, the shape of the mounting groove is matched with that of the central shaft, the central shaft is mounted in the mounting groove, and one end of the central shaft penetrates through the valve body and is connected with the actuator; reinforcing ribs are arranged on the surfaces of the blades, which are on the same side as the opening of the mounting groove, the reinforcing ribs stride over the opening of the mounting groove, and the central shaft is positioned between the mounting groove and the reinforcing ribs; the periphery of blade is fixed with the sealing washer, correspond on the valve body the position of blade closed condition be equipped with the limiting plate that the sealing washer combines.

2. The butterfly valve of claim 1, wherein: the blades are stainless steel.

3. The butterfly valve of claim 1, wherein: the central shaft is provided with a clamping groove which is consistent with the extending direction of the reinforcing rib, two ends of the clamping groove are opened, and the reinforcing rib penetrates through the clamping groove.

4. A butterfly valve according to any one of claims 1 to 3, in which: the number of the reinforcing ribs and the clamping grooves is multiple.

5. The butterfly valve of claim 1, wherein: the limiting plate is arc-shaped, and the radian of the arc is pi.

6. The butterfly valve of claim 1, wherein: the number of the limiting plates is two, the two limiting plates are respectively located at two sides of the valve body and correspond to the closing positions of the blades, and when the blades reach the closing positions, the limiting plates block the blades from rotating.

7. The butterfly valve of claim 1, wherein: the sealing ring is made of high-temperature-resistant rubber.

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