CN213512135U

CN213512135U - Low-temperature butterfly valve with good sealing performance

Info

Publication number: CN213512135U
Application number: CN202022202753.4U
Authority: CN
Inventors: 薛文科; 章营; 文国伍
Original assignee: Shanghai Tingben Fluid Control Co ltd
Current assignee: Shanghai Tingben Fluid Control Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-22
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a low temperature valve technical field discloses a low temperature butterfly valve that leakproofness is good. This kind of low temperature butterfly valve that leakproofness is good includes: the valve comprises a valve body, a motor, a central shaft, a first valve clack and a cavity, wherein the cavity is arranged inside the valve body, an upper fixing plate is fixedly arranged on the outer side of the top of the valve body, a protective cover matched with the upper fixing plate is arranged at the top of the upper fixing plate, and the motor with the downward output end is installed at the top end inside the protective cover. When the low-temperature butterfly valve with good sealing performance is used, the cavity inside the valve body is spherical, the valve clack is completely just closed with the inner wall of the valve clack, leakage can not occur in the use process of the low-temperature butterfly valve, and the operation is convenient.

Description

Low-temperature butterfly valve with good sealing performance

Technical Field

The utility model relates to a low temperature valve technical field specifically is a low temperature butterfly valve that leakproofness is good.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk.

The 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, and mainly plays a role in cutting off and throttling on a pipeline. Most of valve clacks in the prior art adopt circular plate type valve clacks, and the flow velocity of medium flowing are controlled by axially rotating the vertical valve clacks.

But prior art's valve clack often the leakproofness is relatively poor, can appear the condition of infiltration under certain circumstances when the valve clack is closed, and present valve clack most all is the disc form, and is relatively poor with the leakproofness under the valve body mating state, and is comparatively troublesome to the higher occasion of aridity.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low temperature butterfly valve that leakproofness is good to solve the relatively poor problem of valve clack leakproofness among the above-mentioned background art.

In order to achieve the purpose, the utility model provides a low-temperature butterfly valve with good sealing performance, which comprises a valve body, a motor, a central shaft, a first valve clack and a cavity arranged on the valve body;

a cavity is arranged in the valve body, an upper fixing plate is fixedly arranged on the outer side of the top of the valve body, a protective cover matched with the upper fixing plate is arranged at the top of the upper fixing plate, and a motor with a downward output end is arranged at the top end in the protective cover;

the output end of the motor is connected with a central shaft extending into the cavity, and a first valve clack matched with the cavity is fixedly arranged at the outer side of the central shaft and positioned in the cavity;

first valve clack top and bottom are all fixed and are provided with the cooperation ball that is located the valve body inside, the cavity inner wall is spherical, be sealing connection between cooperation ball and the first valve clack, and first valve clack, cooperation ball and valve body are movable sealing connection. The cavity cooperation through first valve clack and valve body inside has formed inclosed space, and the first valve clack top of deuterogamying and bottom are all fixed to be provided with and extend to the inside cooperation ball of valve body, thereby have improved the utility model discloses a leakproofness makes the utility model discloses the environment under the dry requirement also can not take place to leak, has solved among the prior art butterfly valve and has sealed inseparable enough, takes place the problem of leaking easily.

Preferably, the central point of valve body both sides puts the department and all is provided with the connecting pipe that is linked together with the cavity that extends to the valve body inside, the inside one side of valve body is kept away from to the connecting pipe all is provided with the sealing washer, sets up the sealing washer in the connecting pipe through the setting, effectually avoids the utility model discloses the problem of taking place to leak when intaking and play water.

Preferably, the lower part of the first valve clack is movably connected with a ball extending to the inside of the base at the bottom of the matching ball, a ball groove matched with the ball is formed in the base, and the ball is rotatably connected, so that the rotation of the central shaft is smoother.

Preferably, the valve body bottom is provided with rather than matched with base, the valve body outside is located the fixed bottom plate that is provided with in base top and upper fixed plate for, through setting up the base, plays right the utility model discloses a supporting role sets up the bottom plate, makes the base carry out spacing fixedly through the bottom plate.

Preferably, the base bottom is provided with the recess, the top of recess evenly is provided with the first screw that the multiunit extends to the bottom plate inside, swing joint has the spring outside being located between base and the bottom plate, through setting up first screw, conveniently makes and installs and dismantle the base, sets up the spring, plays certain cushioning effect.

Preferably, the central block is fixedly arranged at the central position of the top end inside the groove, the cross section of the central block is circular, and the central shaft can conveniently extend into the central block through the central block, so that the central block is convenient to use.

Preferably, the top and the bottom of first valve clack are located the cooperation ball outside and are provided with respectively with valve body matched with go up mating plate and lower mating plate, and go up the mating plate and be connected for rotating between mating plate and the cooperation ball down, through setting up mating plate and lower mating plate, play supplementary sealed effect.

Preferably, the four corners department at protection lid top is provided with the second screw that extends to the inside of last fixed plate, and is provided with the packing ring between second screw and the visor, through setting up the second screw, conveniently dismantles the visor.

Preferably, a supporting plate matched with the connecting pipe is fixedly arranged between the upper fixing plate and the lower fixing plate, the cross section of the supporting plate is arc-shaped, and the supporting plate is arranged to support the connecting pipe.

Drawings

Fig. 1 is a schematic partial structure diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural view of the whole of embodiment 1 of the present invention;

fig. 3 is a schematic bottom structure view of the whole body in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of a valve body in embodiment 1 of the present invention;

fig. 5 is a schematic view of a partial structure of a valve body in embodiment 1 of the present invention;

fig. 6 is a schematic structural diagram of a first valve flap in embodiment 1 of the present invention;

fig. 7 is a schematic structural diagram of the first valve flap in embodiment 2 of the present invention.

In the figure: 1. a valve body; 2. an upper fixing plate; 3. a protective cover; 4. a motor; 5. a central shaft; 6. a lower fixing plate; 7. a base; 8. a first valve flap; 9. a cavity; 10. a connecting pipe; 11. a ball bearing; 12. matching the balls; 13. a groove; 14. a first screw; 15. a spring; 16. an upper mating plate; 17. a lower mating plate; 18. a center block; 19. a second screw; 20. a seal ring; 21. a support plate; 22. a rectangular through hole; 23. A pressure discharge groove; 24. a first valve flap.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

As described in the background of the present application, most of the prior art valve flaps are disc-shaped, and the sealing effect between the valve flap and the valve body is poor.

The utility model discloses the people discovery causes the relatively poor leading cause of leakproofness of valve clack is that sealed cooperation between valve clack and the valve body is all mostly through the outside at the valve clack be provided with the inboard matched with rubber circle of valve body, and the perfect cooperation of disk-shaped valve clack hardly with the inside globular inner wall of valve body.

In order to solve the above problems, the present application of the present invention provides a technical solution, which comprises the following specific embodiments:

example 1

A cryogenic butterfly valve with good sealing performance, as shown in fig. 1-6, comprising: the valve body 1, the motor 4, the central shaft 5, the first valve clack 8 and the valve body 1 are provided with cavities; a cavity 9 is arranged in the valve body 1, an upper fixing plate 2 is fixedly arranged on the outer side of the top of the valve body 1, a protective cover 3 matched with the upper fixing plate 2 is arranged at the top of the upper fixing plate 2, and a motor 4 with a downward output end is arranged at the top end in the protective cover 3; the output end of the motor 4 is connected with a central shaft 5 extending into the cavity 9, and a first valve clack 8 matched with the cavity 9 is fixedly arranged at the outer side of the central shaft 5 and positioned in the cavity 9; the top and the bottom of the first valve clack 8 are fixedly provided with a matching ball 12 positioned inside the valve body 1, the inner wall of the cavity 9 is spherical, the matching ball 12 is in sealing connection with the first valve clack 8, and the first valve clack 8, the matching ball 12 and the valve body 1 are in movable sealing connection, through the above contents, in the process of using the valve body, the connecting pipes 10 at the two sides of the valve body 1 are connected with the external pipeline, the structure of the first valve clack 8 is just closely matched with the structure of the inner wall of the valve body 1, the motor 4 drives the central shaft 5 to rotate, and further drives the first valve clack 8 to axially rotate a certain angle along the central shaft 5, because the top and the bottom of the first valve clack 8 are fixedly provided with the matching balls 12 extending to the inside of the valve body 1, under the condition that the rotation of the first valve clack 8 is not influenced, the two groups of matching balls 12, when first valve clack 8 rotated, cooperation ball 12 rotated along with first valve clack 8 equally, and cooperation ball 12 still airtight cooperation just with the inner wall of valve body 1 at the pivoted in-process, and then was using the utility model discloses a phenomenon that the infiltration can not take place in the time, it is comparatively convenient that the operation is got up.

In this embodiment, the central positions of the two sides of the valve body 1 are both provided with a connecting pipe 10 which extends to the inside of the valve body 1 and is communicated with the cavity 9, one side of the connecting pipe 10 away from the inside of the valve body 1 is provided with a sealing ring 20, and it is easy to find through the above description that the sealing ring 20 is arranged on the inner side of the connecting pipe 10, so that the connecting pipe is more closely connected with an external pipeline.

Secondly, the bottom swing joint that is located cooperation ball 12 below first valve clack 8 has ball 11 that extends to the inside of base 7, and base 7 is inside to be provided with the ball groove with ball 11 matched with, and above difficult discovery, ball 11 can be favorable to the rotation of center pin 5, and can not take place to interfere with center pin 5, and is comparatively convenient.

Further, a groove 13 is arranged at the bottom of the base 7, a plurality of groups of first screws 14 extending into the lower fixing plate 6 are uniformly arranged at the top end of the groove 13, a spring 15 is movably connected between the base 7 and the lower fixing plate 6 at the outer side of the first screws 14, second screws 19 extending into the upper fixing plate 2 are arranged at four corners of the top of the protective cover 3, a gasket is arranged between the second screws 19 and the protective cover 3, the base 7 matched with the valve body 1 is arranged at the bottom of the valve body 1, the lower fixing plate 6 opposite to the upper fixing plate 2 is fixedly arranged above the base 7 at the outer side of the valve body 1, a supporting plate 21 matched with the connecting pipe 10 is fixedly arranged between the upper fixing plate 2 and the lower fixing plate 6, the cross section of the supporting plate 21 is arc-shaped, the protective cover 3 and the base 7 are conveniently fixed with the upper fixing plate 2 and, make things convenient for the dismouting, set up backup pad 21, play the auxiliary stay to connecting pipe 10.

Besides, the top and the bottom of the first valve flap 8 are located outside the matching ball 12 and are respectively provided with an upper matching plate 16 and a lower matching plate 17 which are matched with the valve body 1, the upper matching plate 16, the lower matching plate 17 and the matching ball 12 are in rotational connection, the upper matching plate 16 and the lower matching plate 17 are arranged, the first valve flap 8 in rotation plays a role in auxiliary sealing, the upper matching plate 16, the lower matching plate 17 and the matching ball 12 are in rotational connection, matching grooves which are matched with the upper matching plate 16 and the lower matching plate 17 are formed in the corresponding positions inside the valve body 1, and the upper matching plate 16 and the lower matching plate 17 are in rotational connection inside the valve body 1.

Example 2

Fig. 7 is a schematic structural diagram of the first valve flap 24 in embodiment 2 of the present invention, and embodiment 2 is an alternative scheme based on embodiment 1, and the difference is that: utilize first valve clack 24 to replace first valve clack 8 for first valve clack 24 replaces first valve clack 8 to install in the inside cavity 9 of valve body 1, as shown in fig. 7, the inside both sides that are located center pin 5 of first valve clack 24 all are provided with rectangle through-hole 22, and the both ends of first valve clack 24 all are provided with multiunit row's pressure tank 23.

It is worth to say that, when the first valve flap 24 rotates, the two sets of rectangular through holes 22 effectively increase the flow rate of the medium flowing through, and a plurality of sets of pressure discharge grooves 23 are provided, because the first valve flap 24 and the inner wall of the cavity 9 are just completely sealed, after the edge position of the first valve flap 24 contacts the medium liquid, different media have different viscosities, and the first valve flap 24 generates certain viscosity due to the viscosity, and because the first valve flap 24 is in sealed connection with the inside of the valve body 1, the first valve flap 24 is not easy to rotate, especially the edge position of the first valve flap 24 completely hermetically matched with the cavity 9, and through the effect of the plurality of sets of pressure discharge grooves 23, the medium viscosity is broken when the first valve flap 24 rotates, and the rotation of the first valve flap 24 is convenient.

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. A low-temperature butterfly valve with good sealing performance is characterized by comprising a valve body, a motor, a central shaft, a first valve clack and a cavity, wherein the valve body is provided with the cavity;

first valve clack top and bottom are all fixed and are provided with the cooperation ball that is located the valve body inside, the cavity inner wall is spherical, be sealing connection between cooperation ball and the first valve clack, and first valve clack, cooperation ball and valve body are movable sealing connection.

2. The low-temperature butterfly valve with good sealing performance of claim 1, wherein: the central point department of putting of valve body both sides all is provided with the connecting pipe that extends to the valve body inside and be linked together with the cavity, the inside one side of valve body is kept away from to the connecting pipe all is provided with the sealing washer.

3. The low-temperature butterfly valve with good sealing performance of claim 1, wherein: the bottom swing joint that is located the cooperation ball below the first valve clack has the ball that extends to the base inside, and the base is inside to be provided with the ball groove with ball matched with.

4. The low-temperature butterfly valve with good sealing performance of claim 1, wherein: the bottom of the valve body is provided with a base matched with the valve body, and the outer side of the valve body is positioned above the base and is fixedly provided with a lower fixed plate opposite to the upper fixed plate.

5. The low-temperature butterfly valve with good sealing performance of claim 4, wherein: the base bottom is provided with the recess, the top of recess evenly is provided with the multiunit and extends to the inside first screw of bottom plate, swing joint has the spring outside being located between base and the bottom plate.

6. The low-temperature butterfly valve with good sealing performance of claim 5, wherein: the center of the top end in the groove is fixedly provided with a center block, and the section of the center block is circular.

7. The low-temperature butterfly valve with good sealing performance of claim 1, wherein: the top and the bottom of first valve clack are located the cooperation ball outside and are provided with respectively with valve body matched with go up mating board and lower mating board, and go up the mating board and be the swivelling joint between mating board and the cooperation ball down.

8. The low-temperature butterfly valve with good sealing performance of claim 1, wherein: and second screws extending into the upper fixing plate are arranged at four corners of the top of the protective cover, and gaskets are arranged between the second screws and the protective cover.

9. The low-temperature butterfly valve with good sealing performance of claim 1, wherein: and a supporting plate matched with the connecting pipe is fixedly arranged between the upper fixing plate and the lower fixing plate, and the cross section of the supporting plate is arc-shaped.

10. The low-temperature butterfly valve with good sealing performance of claim 1, wherein: the inside both sides that are located the center pin of first valve clack all are provided with the rectangular hole, the both ends of first valve clack all are provided with the multiunit and arrange the indent.