CN219263460U

CN219263460U - Double-seal butterfly valve

Info

Publication number: CN219263460U
Application number: CN202223077372.3U
Authority: CN
Inventors: 刘建东
Original assignee: Beijing Yichuang Chaoda Technology Group Co ltd
Current assignee: Beijing Yichuang Chaoda Technology Group Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-06-27
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to the technical field of butterfly valves and discloses a double-seal butterfly valve, which comprises a butterfly valve body, wherein two sides of the surface of the butterfly valve body are communicated with first connecting pipes, one end of each first connecting pipe is fixedly provided with a first flange plate, the lower side of each first flange plate is fixedly provided with a connecting plate, the surface of each first flange plate is connected with a second flange plate through bolts, one side of each second flange plate is communicated with a second connecting pipe, the bottom of the butterfly valve body is provided with a handle, the surface of each handle is fixedly provided with a moving mechanism, one side of each moving mechanism is rotatably connected to the bottom of the butterfly valve body, and the surface of each first connecting pipe is slidably connected with a sealing frame; when the sealing device is used, a worker can drive the moving mechanism to work by using the handle, and under the action of the moving mechanism, the sealing frames at the two sides move simultaneously and are fixed on the surfaces of the flange plates, and under the action of the sealing frames and the sealing rings, the effect of secondary sealing of the joint is achieved.

Description

Double-seal butterfly valve

Technical Field

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

Background

The butterfly valve is also called as a flap valve, and is a valve which has a simple structure and can be used for opening and closing low-pressure pipeline media. The pipe is mainly used for cutting and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly valve opening and closing piece in the valve body, so that the purpose of opening and closing or adjusting is achieved.

The butterfly valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, in the installation process of the butterfly valve, the flange plates of the communication pipelines on two sides of the butterfly valve are connected with the flange plates of the external pipelines, and sealing rings are arranged between the flange plates on two sides for sealing, but one sealing ring is easy to have poor sealing effect, and air leakage and liquid leakage are easy to occur at the joint after the sealing ring is aged, so that the use of the butterfly valve and the pipelines is affected.

Disclosure of Invention

The utility model aims to provide a double-seal butterfly valve, when in use, a worker can drive a moving mechanism to work by using a handle, and under the action of the moving mechanism, sealing frames at two sides move and are fixed on the surfaces of flange plates at the same time, and under the action of the sealing frames and sealing rings, the effect of secondary sealing of the joint is achieved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a double-seal butterfly valve, includes the butterfly valve body, the both sides on butterfly valve body surface all communicate there is first connecting pipe, the one end of first connecting pipe is fixed with first ring flange, the downside of first ring flange is fixed with the connecting plate, the surface bolted connection of first ring flange has the second ring flange, one side intercommunication of second ring flange has the second connecting pipe, the bottom of butterfly valve body is provided with the handle, the fixed surface of handle has moving mechanism, one side of moving mechanism rotates and connects in the bottom of butterfly valve body, the surface sliding connection of first connecting pipe has sealing frame, sealing frame's inner chamber is fixed with a plurality of sealing washer.

Preferably, the moving mechanism comprises a rotating roller, one end of the rotating roller is fixed at the top of the handle, the other end of the rotating roller rotates at the bottom of the butterfly valve body, the surface of the rotating roller is fixed with first bevel gears, two sides of each first bevel gear are meshed with second bevel gears, an inner cavity of each second bevel gear is fixed with a threaded rod, the other end of the threaded rod is rotationally connected with the surface of the connecting plate, and the sealing frame is in threaded connection with the surface of the threaded rod.

Preferably, the number of the threaded rods is two, and the thread directions of the threaded rods on two sides are opposite.

Preferably, the thread angle of the threaded rod is smaller than the friction equivalent, so that the threaded rod has self-locking property.

Preferably, a sliding groove is formed in the inner cavity of the sealing frame, a sliding rod is fixed to the top of the first connecting pipe, and the sliding rod slides on the surface of the sliding groove.

Preferably, the number of the sealing rings is four and two by two, and the distance between each group is equal to the thickness of the first flange plate and the second flange plate.

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

when the butterfly valve is used, a worker can drive the moving mechanism to work by using the handle, under the action of the moving mechanism, the sealing frames at the two sides move simultaneously and are fixed on the surfaces of the flange plates, and under the action of the sealing frames and the sealing rings, the effect of secondary sealing of the joint is achieved, and the problem that sealing equipment at the joint at the two sides is easy to have poor sealing effect after the installation and connection of the existing part of butterfly valve, so that the use of the butterfly valve is influenced is solved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of the lower side view of the present utility model;

FIG. 3 is a schematic view of a partial perspective structure of the present utility model;

FIG. 4 is an enlarged perspective view of the structure of FIG. 3A according to the present utility model;

fig. 5 is a schematic view of a partial perspective structure in the present utility model.

In the figure: 1. a butterfly valve body; 2. a first connection pipe; 3. a second connection pipe; 4. a handle; 5. a first flange; 6. a second flange; 7. a sealing frame; 8. a connecting plate; 9. a moving mechanism; 901. a rotating roller; 902. a first bevel gear; 903. a second bevel gear; 904. a threaded rod; 10. a chute; 11. a slide bar; 12. and (3) sealing rings.

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.

Referring to fig. 1-5, a dual-seal butterfly valve comprises a butterfly valve body 1, wherein two sides of the surface of the butterfly valve body 1 are respectively communicated with a first connecting pipe 2, one end of the first connecting pipe 2 is fixedly provided with a first flange plate 5, the lower side of the first flange plate 5 is fixedly provided with a connecting plate 8, the surface of the first flange plate 5 is connected with a second flange plate 6 through bolts, one side of the second flange plate 6 is communicated with a second connecting pipe 3, the bottom of the butterfly valve body 1 is provided with a handle 4, the surface of the handle 4 is fixedly provided with a moving mechanism 9, one side of the moving mechanism 9 is rotatably connected to the bottom of the butterfly valve body 1, the surface of the first connecting pipe 2 is slidably connected with a sealing frame 7, and the inner cavity of the sealing frame 7 is fixedly provided with a plurality of sealing rings 12.

The moving mechanism 9 includes a roller 901, one end of the roller 901 is fixed at the top of the handle 4, the other end of the roller 901 rotates at the bottom of the butterfly valve body 1, a first bevel gear 902 is fixed on the surface of the roller 901, second bevel gears 903 are meshed with two sides of the first bevel gear 902, a threaded rod 904 is fixed in an inner cavity of the second bevel gear 903, the other end of the threaded rod 904 is rotationally connected to the surface of the connecting plate 8, and the sealing frame 7 is in threaded connection with the surface of the threaded rod 904.

The number of the threaded rods 904 is two, and the directions of the threads of the threaded rods 904 on both sides are opposite, in this embodiment, by such arrangement, when a worker rotates the rotating roller 901, under the arrangement that the threads of the threaded rods 904 on both sides are opposite, the sealing frames 7 on both sides can be moved simultaneously, and the effect of fixing is achieved.

The lead angle of the threaded rod 904 is smaller than the friction equivalent, so that the threaded rod 904 has self-locking property, in this embodiment, through the arrangement, after the sealing frame 7 reaches a working area, the sealing frame 7 can not move due to slight external force under the cooperation of the screw angle, thereby improving the practicability of the device.

The spout 10 has been seted up to the inner chamber of sealing frame 7, and the top of first connecting pipe 2 is fixed with slide bar 11, and slide bar 11 slides in the surface of spout 10, and in this embodiment, through the setting of spout 10 and slide bar 11, sealing frame 7 when the surface slip of first connecting pipe 2, under the cooperation of spout 10 and slide bar 11, can provide spacingly for sealing frame 7's removal to stability when increasing sealing frame 7 and removing.

The number of sealing rings 12 is four and two is a set of, and the distance between every group equals the thickness of first ring flange 5 and second ring flange 6, in this embodiment, through this kind of setting, after sealing frame 7 reaches the work area, can make the both sides surface of each ring flange all receive the sealed effect of sealing ring 12 under the cooperation of sealing ring 12 position, strengthens sealing frame 7 to the sealed effect of first ring flange 5 and second ring flange 6 junction.

Working principle: when the butterfly valve body 1 is used, the staff connects first connecting pipe 2 and second connecting pipe 3 through first ring flange 5 and second ring flange 6, after first connecting pipe 2 and second connecting pipe 3 are connected, the staff uses handle 4 of butterfly valve body 1 bottom, under the effect of handle 4, roller 901 takes place to rotate, and rotate with roller 901 fixed connection first awl tooth 902 and roller 901 together, the second awl tooth 903 with first awl tooth 902 is also rotated this moment, and drive threaded rod 904 and take place to rotate, through the rotation of threaded rod 904, the sealed frame 7 of threaded rod 904 threaded connection takes place the displacement, make sealed frame 7 remove to first ring flange 5, and make four sets of sealing washer 12 be fixed in the both sides of first ring flange 5 and second ring flange 6 respectively, reach the effect that seals respectively to two junctions of first connecting pipe 2 and second connecting pipe 3.

It is noted that relational terms such as first and second, and the like are 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. Moreover, 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. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

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. The utility model provides a double containment butterfly valve, includes butterfly valve body (1), its characterized in that: the butterfly valve is characterized in that first connecting pipes (2) are respectively communicated with two sides of the surface of the butterfly valve body (1), one end of each first connecting pipe (2) is fixedly provided with a first flange plate (5), the lower side of each first flange plate (5) is fixedly provided with a connecting plate (8), the surface of each first flange plate (5) is connected with a second flange plate (6) through bolts, one side of each second flange plate (6) is communicated with a second connecting pipe (3), the bottom of the butterfly valve body (1) is provided with a handle (4), the surface of each handle (4) is fixedly provided with a moving mechanism (9), one side of each moving mechanism (9) is rotationally connected with the bottom of the butterfly valve body (1), the surface of each first connecting pipe (2) is connected with a sealing frame (7) in a sliding mode, and a plurality of sealing rings (12) are fixed in an inner cavity of the sealing frame (7).

2. A double seal butterfly valve according to claim 1, wherein: the moving mechanism (9) comprises a rotating roller (901), one end of the rotating roller (901) is fixed at the top of the handle (4), the other end of the rotating roller (901) rotates at the bottom of the butterfly valve body (1), first conical teeth (902) are fixed on the surface of the rotating roller (901), second conical teeth (903) are meshed on two sides of the first conical teeth (902), a threaded rod (904) is fixed in an inner cavity of the second conical teeth (903), the other end of the threaded rod (904) rotates and is connected to the surface of the connecting plate (8), and the sealing frame (7) is connected to the surface of the threaded rod (904) in a threaded mode.

3. A double seal butterfly valve according to claim 2, wherein: the number of the threaded rods (904) is two, and the thread directions of the threaded rods (904) on two sides are opposite.

4. A double seal butterfly valve according to claim 2, wherein: the thread lead angle of the threaded rod (904) is smaller than the friction equivalent, so that the threaded rod (904) has self-locking property.

5. A double seal butterfly valve according to claim 1, wherein: the inner cavity of the sealing frame (7) is provided with a sliding groove (10), the top of the first connecting pipe (2) is fixed with a sliding rod (11), and the sliding rod (11) slides on the surface of the sliding groove (10).

6. A double seal butterfly valve according to claim 1, wherein: the number of the sealing rings (12) is four and two by two, and the distance between each group is equal to the thickness of the first flange plate (5) and the second flange plate (6).