CN219452913U

CN219452913U - High-performance double-eccentric butterfly valve

Info

Publication number: CN219452913U
Application number: CN202320400468.4U
Authority: CN
Inventors: 刘升升; 黄淦; 王骋
Original assignee: Jingou Control Valve Group Co ltd
Current assignee: Jingou Control Valve Group Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-08-01
Anticipated expiration: 2033-03-07

Abstract

The utility model discloses a high-performance double-eccentric butterfly valve, which comprises a valve body, wherein flange plates are fixed on two sides of the valve body, a valve rod is rotatably arranged at the top of the valve body, the outer end of the valve rod extending into the inner cavity of the valve body is fixedly connected with a butterfly plate, one side of the butterfly plate is connected with a pressing plate through a screw, and a sealing assembly is arranged between the butterfly plate and the pressing plate; sealing component, sealing component include sealing washer, impeller and pressing piece, and the guide way has been seted up to one side of clamp plate laminating butterfly plate, and the impeller sets up in the guide way inside, and the impeller comprises deflector, slider and connecting plate, and the standing groove has been seted up to one side of butterfly plate laminating clamp plate, and the pressing piece sets up in the standing groove inside, and the pressing piece comprises stripper, pressing lever and spring. When the butterfly plate closes the valve body, the guide plate is subjected to pressure sliding, and the sealing ring can be pressed by the pressing rod to contact the sealing ring, so that the sealing ring is attached to the inner wall of the valve body, the tightness of the sealing ring is improved, the service life of the sealing ring is prolonged, and the loss caused by frequent replacement of the sealing ring is reduced.

Description

High-performance double-eccentric butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a high-performance double-eccentric butterfly valve.

Background

The butterfly valve is also called as a flap valve, is a regulating valve with simple structure, can be used for the on-off control of low-pressure pipeline medium, and is a valve which is opened and closed by rotating a closing member around a valve shaft, wherein the double eccentric butterfly valve is also called as a high-performance butterfly valve, is mainly suitable for drainage of systems such as water factories, power plants, steel mill smelting, chemical industry, water source spring engineering, environmental facility construction and the like, is particularly suitable for water channel pipelines, and is used as regulating and intercepting equipment.

In the use process of the double-eccentric butterfly valve, the sealing ring is easy to wear due to frequent opening and closing, so that the sealing effect of the sealing ring is reduced, the sealing ring needs to be frequently replaced, and the use cost of the double-eccentric butterfly valve is easy to increase.

Disclosure of Invention

The utility model aims to provide a high-performance double-eccentric butterfly valve so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a high performance double offset butterfly valve, comprising:

the valve body is characterized in that flange plates are fixed on two sides of the valve body, a valve rod is rotatably arranged at the top of the valve body, the outer end of the valve rod extending into the inner cavity of the valve body is fixedly connected with a butterfly plate, one side of the butterfly plate is connected with a pressing plate through a screw, and a sealing assembly is arranged between the butterfly plate and the pressing plate;

sealing component, sealing component includes the sealing washer, impeller and pressing piece, the guide way has been seted up to one side of clamp plate laminating butterfly plate, the impeller sets up in the guide way inside, the impeller comprises deflector, slider and connecting plate, the slider is installed to the deflector outside symmetry, the connecting plate is installed to one side that the deflector is close to the butterfly plate, the standing groove has been seted up to one side of butterfly plate laminating clamp plate, the pressing piece sets up in the standing groove inside, the pressing piece comprises the stripper, press pole and spring, the stripper outside is connected with the press pole, press pole outside cover is equipped with the spring, stripper top and connecting plate bottom sliding contact.

As a further preferable mode of the technical scheme, one side, attached to the pressing plate, of the butterfly plate is recessed inwards in a straight line, a clamping groove is formed in the outer portion of the butterfly plate, a sealing ring is placed in the clamping groove, and one side of the sealing ring is attached to the pressing plate to be in contact with the pressing plate.

As a further preferable mode of the technical scheme, the sliding block is in sliding contact with the guide groove, an opening communicated with the guide groove is formed in the other side of the pressing plate, and the guide plate is connected in the opening in a sliding penetrating mode.

As a further preferable aspect of the present technical solution, a side of the connecting plate away from the guide plate is inclined near the center of the butterfly plate, and extends into the placement groove to be in sliding contact with the placement groove, and the extrusion plate is in sliding contact with the placement groove.

As a further preferable mode of the technical scheme, a channel is arranged between the placing groove and the opening, the pressing rod is inserted into the channel in a sliding mode, the spring is located inside the placing groove, and one end of the pressing rod, which extends into the opening through the channel, is in extrusion contact with the inner wall of the sealing ring.

The utility model provides a high-performance double-eccentric butterfly valve, which has the following beneficial effects:

when the butterfly plate closes the valve body, the guide plate is subjected to pressure sliding, and the sealing ring can be pressed by the pressing rod to contact the sealing ring, so that the sealing ring is attached to the inner wall of the valve body, the tightness of the sealing ring is improved, the service life of the sealing ring is prolonged, and the loss caused by frequent replacement of the sealing ring is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the valve body of the present utility model;

FIG. 3 is a schematic view of the seal assembly of the present utility model in the internal configuration of the butterfly plate and pressure plate;

FIG. 4 is a schematic view of the seal assembly of the present utility model.

In the figure: 1. a valve body; 2. a flange plate; 3. a valve stem; 4. a butterfly plate; 5. a pressing plate; 6. a screw; 7. a seal ring; 8. a guide plate; 801. a slide block; 9. a connecting plate; 10. an extrusion plate; 11. pressing a pressing rod; 12. and (3) a spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Specific embodiments of the present utility model will be described below with reference to the accompanying drawings

As shown in fig. 1, a high performance double eccentric butterfly valve, comprising:

as shown in fig. 1, fig. 2 and fig. 3, the valve body 1, flange plates 2 are fixed on two sides of the valve body 1, a valve rod 3 is rotatably installed at the top of the valve body 1, the outer end of the valve rod 3 extending into the inner cavity of the valve body 1 is fixedly connected with a butterfly plate 4, the contact part of the valve rod 3 and the valve body 1 is rotatably connected through a shaft sleeve, one side of the butterfly plate 4 is connected with a pressing plate 5 through a screw 6, a sealing component is arranged between the butterfly plate 4 and the pressing plate 5, and the sealing component can increase the sealing of the joint between the butterfly plate 4 and the valve body 1.

As shown in fig. 3, one side of the butterfly plate 4, which is attached to the pressing plate 5, is concave inward in a straight line, the shape of the butterfly plate 4 is disc-shaped, the shape of the pressing plate 5 is circular, the contact area between the butterfly plate 4 and the pressing plate 5 is increased for describing the shape of one side of the butterfly plate 4, the pressing plate 5 is convenient to install, a clamping groove is formed in the outer portion of the butterfly plate 4, a sealing ring 7 is placed in the clamping groove, one side of the sealing ring 7 is attached to the pressing plate 5, the section of the end part of the sealing ring 7 is U-shaped, and the sealing ring 7 is attached to the inner wall of the valve body 1.

As shown in fig. 2 and 3, the sealing component comprises a sealing ring 7, a pushing member and a pressing member, wherein a guide groove is formed in one side, attached to the butterfly plate 4, of the pressing plate 5, the pushing member is arranged inside the guide groove and consists of a guide plate 8, a sliding block 801 and a connecting plate 9, the sliding block 801 is symmetrically arranged on the outer side of the guide plate 8, the sliding block 801 is in sliding contact with the guide groove, the guide plate 8 is limited to slide linearly through the sliding block 801, an opening communicated with the guide groove is formed in the other side of the pressing plate 5, the diameter of the opening is smaller than that of the guide groove, the sliding block 801 is prevented from sliding out of the opening, the guide plate 8 is connected in the opening in a sliding penetrating manner, the guide plate 8 is in contact with an inner cavity of the valve body 1, and the guide plate 8 is not in contact with the inner wall of the valve body 1.

As shown in fig. 4, a connecting plate 9 is installed on one side of the guide plate 8, which is close to the butterfly plate 4, and one side of the connecting plate 9, which is far away from the guide plate 8, is close to the center of the butterfly plate 4, is inclined, and extends into the placing groove to be in sliding contact with the placing groove, and the extruding plate 10 is in sliding contact with the placing groove, so that the resistance between the extruding plate 10 and the extruding plate 10 can be increased due to the inclined design of the guide plate 8, and the extruding plate 10 is extruded and slid by the inclined surface of the connecting plate 9 in the sliding process of the guide plate 8.

As shown in fig. 2, fig. 3 and fig. 4, the standing groove has been seted up to one side of butterfly plate 4 laminating clamp plate 5, the press piece sets up in the standing groove inside, the press piece comprises stripper plate 10, press pole 11 and spring 12, the stripper plate 10 outside is connected with press pole 11, press pole 11 outside cover is equipped with spring 12, be equipped with the passageway between standing groove and opening, spring 12 plays spacing stripper plate 10 sliding distance's effect, press pole 11 slides and alternates in the passageway, the passageway is smaller than stripper plate 10 diameter, spring 12 is located the standing groove inside, press pole 11 stretches into open-ended one end through the passageway and presses the contact with sealing washer 7 inner wall, stripper plate 10 slides and extrudes sealing washer 7, can make sealing washer 7 produce deformation and contact with valve body 1 inner wall laminating, increase sealing washer 7's leakproofness, stripper plate 10 top and connecting plate 9 bottom sliding contact, stripper plate 10 can receive the pressure to produce the slip in the connecting plate 9 sliding process.

Before the use, the spring 12 is sleeved outside the pressing rod 11, then the pressing rod 11 is placed in the placing groove, one end of the pressing rod 11, which is far away from the extrusion plate 10, enters the opening through the channel, then the guide plate 8 is placed in the guide groove, the sliding block 801 is in sliding fit with the guide groove, the pressing plate 5 with the pushing piece assembled is connected with the butterfly plate 4 through the screw 6, the sealing ring 7 is sleeved in the opening, finally the butterfly plate 4 is assembled inside the valve body 1, when the butterfly plate 4 rotates to close the valve body 1, fluid in the valve body 1 applies pressure to the guide plate 8, the guide plate 8 drives the connecting plate 9 to slide, the extrusion plate 10 is subjected to pressure sliding in the sliding process of the connecting plate 9, the extrusion plate 10 drives the pressing rod 11 to slide, the spring 12 is extruded by the pressing rod 11, and the sealing ring 7 is tightly fit with the inner wall of the valve body 1.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high performance double offset butterfly valve, comprising:

the valve comprises a valve body (1), flange plates (2) are fixed on two sides of the valve body (1), a valve rod (3) is rotatably installed at the top of the valve body (1), a butterfly plate (4) is fixedly connected to the outer end of the valve rod (3) extending into the inner cavity of the valve body (1), one side of the butterfly plate (4) is connected with a pressing plate (5) through a screw (6), and a sealing assembly is arranged between the butterfly plate (4) and the pressing plate (5);

sealing component, sealing component includes sealing washer (7), impeller and pressing piece, the guide way has been seted up to one side of clamp plate (5) laminating butterfly plate (4), the impeller sets up in the guide way inside, the impeller comprises deflector (8), slider (801) and connecting plate (9), slider (801) are installed to deflector (8) outside symmetry, connecting plate (9) are installed to one side that deflector (8) is close to butterfly plate (4), the standing groove has been seted up to one side of butterfly plate (4) laminating clamp plate (5), the pressing piece sets up in the standing groove inside, the pressing piece comprises squeeze plate (10), press lever (11) and spring (12), squeeze plate (10) outside is connected with presses lever (11), press lever (11) outside cover is equipped with spring (12), squeeze plate (10) top and connecting plate (9) bottom sliding contact.

2. The high performance double offset butterfly valve of claim 1, wherein: the butterfly plate (4) is in linear inward depression with one side of clamp plate (5) laminating, and the draw-in groove has been seted up to butterfly plate (4) outside, has placed sealing washer (7) in the draw-in groove, sealing washer (7) one side and clamp plate (5) laminating contact.

3. The high performance double offset butterfly valve of claim 1, wherein: the sliding block (801) is in sliding contact with the guide groove, an opening communicated with the guide groove is formed in the other side of the pressing plate (5), and the guide plate (8) is connected in the opening in a sliding penetrating mode.

4. The high performance double offset butterfly valve of claim 1, wherein: one side of the connecting plate (9) far away from the guide plate (8) is close to the center of the butterfly plate (4) and extends into the placing groove to be in sliding contact with the placing groove, and the extruding plate (10) is in sliding contact with the placing groove.

5. The high performance double offset butterfly valve of claim 1, wherein: a channel is arranged between the placing groove and the opening, the pressing rod (11) is inserted into the channel in a sliding mode, the spring (12) is located inside the placing groove, and one end of the pressing rod (11) stretches into the opening through the channel to be in extrusion contact with the inner wall of the sealing ring (7).