CN113357383B

CN113357383B - Blending butterfly valve

Info

Publication number: CN113357383B
Application number: CN202110809337.7A
Authority: CN
Inventors: 林哲; 杨林; 朱祖超
Original assignee: Zhejiang Sci Tech University ZSTU
Current assignee: Zhejiang Sci Tech University ZSTU
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-07-26
Anticipated expiration: 2041-07-16
Also published as: CN113357383A

Abstract

The invention discloses a blending butterfly valve which comprises a valve shell main body, flange covers, a valve plate main body and a sleeve pipe main body, wherein the valve shell main body is formed by combining two valve shell units, the two valve shell units are surrounded by flanges, the flanges are respectively and correspondingly provided with the flange covers, the valve plate main body is arranged in the valve shell main body, the valve plate main body is composed of a valve plate and a valve shaft, the valve plate is fixed on the valve shaft, the valve shaft is sleeved in the two flange covers, one end of the valve shaft is provided with a valve shaft opening, the other end of the valve shaft is provided with a boss, the sleeve pipe main body extends into the sleeve pipe main body from the valve shaft opening, a sleeve pipe opening is formed in the sleeve pipe main body, one end of the sleeve pipe main body is provided with a rotating wheel, and the rotating wheel is provided with four through hole arc grooves. The blending butterfly valve can independently control two fluids, can realize three fluid type outlets, comprises two single fluids and one mixed fluid, and has superior control performance; the fluid is caused to create turbulence in the area of the valve plate blend due to the obstruction of the valve plate, which enhances the ability of the fluid to blend.

Description

Blending butterfly valve

Technical Field

The invention belongs to the technical field of fluid blending valves, and particularly relates to a blending butterfly valve.

Background

A butterfly valve is also called a flap valve, is a regulating valve with simple structure, achieves the opening and closing of the valve by the rotation of a valve plate around a valve shaft, has the characteristics of simple structure, excellent regulating performance, small opening and closing torque and convenient installation, and is widely applied to a fluid distribution system. The blending of fluids is widely used in the fields of industry, medicine, aerospace and the like, and a blending valve is arranged in a fluid blending pipe section to adjust and control fluid blending parameters such as the proportion, the speed and the like of fluid blending.

The plunger type blending valve can only control one fluid flow, has poor control performance and blending capability, and lacks a blending butterfly valve which can independently control two fluids and can deal with fluids with different physical properties.

Disclosure of Invention

The present invention is directed to a blended butterfly valve that solves the problems set forth above in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a blending butterfly valve comprises a valve shell main body, a flange cover, a valve plate main body and a sleeve pipe main body, wherein the valve shell main body is formed by combining two valve shell units which are oppositely arranged and have circular cavities in the inner parts, the upper end and the lower end of each valve shell unit are flange surfaces, a plurality of first bolt holes are formed in the flange surfaces, separated from the two valve shell units, close to the outer edge, of the two valve shell units, a first 0-shaped groove is formed in the edge, two flanges perpendicular to the central axis of the valve shell main body are enclosed by the two valve shell units, a plurality of second bolt holes are formed in the two flanges, and a second 0-shaped groove is formed in the flange surface, contacted with the two valve shell units, close to the outer edge, of the two flange units, and a plurality of third bolt holes are formed in the edge;

the two flanges are respectively and correspondingly provided with the flange covers which are hollow circular-tube-shaped bosses, the flange covers are provided with fourth bolt holes corresponding to the second bolt holes, and circular-arc curved surfaces tangent to the cylindrical inner walls of the valve shell main bodies are arranged at the circular tube ends of the flange covers;

the valve plate main body is installed in the valve shell main body and consists of a valve plate and a valve shaft, the valve plate is a circular plate and is fixed on the valve shaft, the valve shaft is sleeved in the two flange covers, one end of the valve shaft is closed, a valve shaft opening with a certain radian is formed in the side surface, located in the valve shell main body, of the valve shaft, an opening is formed in the other end of the valve shaft, and four axisymmetric bosses are arranged along the opening;

the sleeve main body extends into the valve shaft opening, the sleeve main body and the valve shaft are coaxial and tightly attached to the inner wall of the valve shaft opening, a sleeve opening corresponding to the valve shaft opening is formed in the sleeve main body, one end, located in the valve shaft, of the sleeve main body is closed, the other end of the sleeve main body is provided with a rotating wheel, the rotating wheel is provided with four through hole arc grooves, the four through hole arc grooves are sleeved on the boss in a one-to-one correspondence mode, and the length of each through hole arc groove is longer than that of the boss.

Preferably, the valve shaft opening and the sleeve opening have the same circular arc.

Preferably, a gap is left between the closed end of the sleeve main body and the inner cavity of the valve shaft.

Preferably, be equipped with on the flange with the arc recess of second 0 type groove connection, second 0 type recess with install drum type sealing washer on the arc recess, drum type sealing washer by with the O type sealing washer section that second 0 type recess matches and with the circular arc sealing washer section that the arc recess matches constitutes.

Preferably, the valve plate abuts against the inner wall of the valve housing body.

Preferably, the valve shaft and the flange cover are coaxial and tightly attached to the inner wall of the flange cover.

Preferably, the four bosses are matched with the through hole arc grooves in size, and when the rotating wheel is rotated back and forth, the bosses can reach two ends of the corresponding through hole arc grooves and realize the condition that the intersection of the sleeve pipe opening and the valve shaft opening is maximum or zero.

Compared with the prior art, the invention has the beneficial effects that:

1. the blending butterfly valve can independently control two kinds of fluid, can realize three kinds of fluid outlets, including two kinds of single fluid and one kind of mixed fluid, and has superior control performance;

2. the obstruction of the valve plate can cause the fluid to generate turbulence in the blending area of the valve plate, and the turbulence generation enhances the fluid blending capability;

3. the components in the blending butterfly valve are convenient to replace, and particularly the sleeve component in the blending butterfly valve can be replaced by materials with different characteristics, such as ceramics, and the like, so as to deal with blending fluids with different physical properties.

Drawings

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

FIG. 2 is a schematic view of the present invention in partial cross-section;

FIG. 3 is a schematic view, partially in section, of the valve housing body of the present invention;

FIG. 4 is a schematic view of a flange cover configuration of the present invention;

FIG. 5 is a schematic view of the main body structure of the valve plate of the present invention;

FIG. 6 is a schematic structural diagram of the main body of the sleeve of the present invention;

fig. 7 is a schematic structural view of the drum-shaped seal ring of the present invention.

In the figure: 1. a valve housing body; 11. a first bolt hole; 12. a first type 0 groove; 13. a flange; 14. a second bolt hole; 15. a second type 0 groove; 16. a third bolt hole; 17. an arc-shaped groove; 2. a flange cover; 21. a fourth bolt hole; 22. a circular arc curved surface; 3. a valve plate main body; 31. a valve plate; 32. a valve shaft; 33. the valve shaft is opened; 34. a boss; 4. a cannula body; 41. opening the sleeve; 42. a rotating wheel; 43. a through hole arc groove; 5. a drum-shaped seal ring; 51. an O-shaped seal ring section; 52. a circular arc sealing ring section.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example 1: referring to fig. 1-7, the present invention provides a technical solution: a blending butterfly valve comprises a valve casing main body 1, a flange cover 2, a valve plate main body 3 and a sleeve pipe main body 4, wherein the valve casing main body 1 is formed by combining two valve casing units which are oppositely arranged and internally provided with circular cavities, the upper end and the lower end of each valve casing unit are flange surfaces, the two flange surfaces separated from each other by the valve casing units are provided with a plurality of first bolt holes 11 close to the outer edge and a first 0-shaped groove 12 along the inner edge, the two valve casing units are surrounded by two flanges 13 vertical to the central axis of the valve casing main body 1, the two flanges 13 are provided with a plurality of second bolt holes 14, the flange surfaces contacted with the two valve casing units are provided with a second 0-shaped groove 15 along the inner edge and a plurality of third bolt holes 16 close to the outer edge;

the two flanges 13 are respectively and correspondingly provided with the flange covers 2, the flange covers 2 are hollow circular-tube-shaped bosses, fourth bolt holes 21 corresponding to the second bolt holes 14 are formed in the flange covers 2, and circular arc curved surfaces 22 tangent to the cylindrical inner walls of the valve shell main body 1 are formed in the circular tube ends of the flange covers 2;

the valve plate main body 3 is installed in the valve casing main body 1, the valve plate main body 3 is composed of a valve plate 31 and a valve shaft 32, the valve plate 31 is a circular plate and is fixed on the valve shaft 32, the valve shaft 32 is sleeved in the two flange covers 2, one end of the valve shaft 32 is closed, a valve shaft opening 33 with a certain radian is formed in the side surface, located in the valve casing main body 1, of the valve shaft 32, an opening is formed in the other end of the valve shaft 32, and four axisymmetric bosses 34 are arranged along the opening;

the sleeve main body 4 extends into the valve shaft 32 from the opening thereof, the sleeve main body 4 and the valve shaft 32 are coaxial and closely attached to the inner wall thereof, the sleeve main body 4 is provided with a sleeve opening 41 corresponding to the valve shaft opening 33, one end of the sleeve main body 4 positioned in the valve shaft 32 is closed, the other end of the sleeve main body 4 is provided with a rotating wheel 42, the rotating wheel 42 is provided with four through hole arc grooves 43, the four through hole arc grooves 43 are sleeved on the boss 34 in a one-to-one correspondence manner, and the length of the through hole arc grooves 43 is longer than that of the boss 34.

In this embodiment, the relative opening of the valve plate 31 and the valve housing main body 1 can be changed by rotating the valve shaft 32, the valve plate 31 is in a closed state, and when the intersection of the sleeve opening 41 and the valve shaft opening 33 is zero, the whole blending butterfly valve is completely closed, and no fluid flows out; when the valve plate 31 is kept in a closed state, the rotating wheel 42 is continuously adjusted, and when the intersection of the sleeve opening 41 and the valve shaft opening 33 is not zero, only the branch flow in the sleeve main body 4 flows out of the blending valve outlet; when the intersection of the retaining collar opening 41 and the valve shaft opening 33 is not zero, the valve shaft 32 is rotated, and the valve plate 31 is in an open state and the blending valve outlet is a mixed fluid because the collar body 4 is inserted into the valve shaft 32 and the intersection of the collar opening 41 and the valve shaft opening 33 is not changed by rotating the valve shaft 32; when the turning wheel 42 is turned while keeping the valve plate 31 in an open state, only the radial main flow exits the admixture valve when the intersection of the sleeve opening 41 and the valve shaft opening 33 is zero.

Specifically, the valve shaft opening 33 and the sleeve opening 41 have the same circular arc.

In this embodiment, the intersection of the valve shaft opening 33 and the sleeve opening 41 is optimized, and materials are saved.

Specifically, a gap is left between the closed end of the cannula main body 4 and the inner cavity of the valve shaft 32.

In this embodiment, it is used to eliminate the extrusion due to thermal expansion.

Specifically, be equipped with on the flange 13 with the arc recess 17 that second 0 type recess 15 is connected, second 0 type recess 15 with install drum type sealing washer 5 on the arc recess 17, drum type sealing washer 5 by with O type sealing washer section 51 that second 0 type recess 15 matches and with the circular arc sealing washer section 52 that arc recess 17 matches constitute.

In this embodiment, the drum seal 5 ensures the sealing properties of the valve housing main body 1 and the flange cover 2.

Specifically, the valve plate 31 is closely attached to the inner wall of the valve housing body 1.

In this embodiment, when the valve plate 31 surface is made parallel to the flange surface where the first type 0 groove 12 of the valve housing main body 1 is located, the valve plate 31 is in the completely closed state.

Specifically, the valve shaft 32 is coaxial with the flange cover 2 and is tightly attached to the inner wall thereof.

In this embodiment, the flange cover 2 restricts the degree of freedom of the valve shaft 32, so that the valve shaft 32 can only rotate.

Specifically, the four bosses 34 are matched with the through hole arc groove 43 in size, and when the rotary wheel 42 is rotated back and forth, the bosses 34 can reach the two ends of the corresponding through hole arc groove 43 and the condition that the intersection of the sleeve opening 41 and the valve shaft opening 33 is the largest or zero is realized.

In the present embodiment, the opening and closing of the casing opening 41 is controlled by rotating the rotating wheel 42.

For the convenience of understanding the technical solutions of the present invention, the working principle or the operation mode of the present invention in the practical process will be described in detail below.

The working principle is as follows: the relative opening degree of the valve plate 31 and the valve shell main body 1 can be changed by rotating the valve shaft 32, when the valve plate 31 surface is parallel to the flange surface where the first 0-shaped groove 12 of the valve shell main body 1 is positioned, the valve plate 31 is in a closed state, at the moment, the rotating wheel 42 is rotated, when the intersection of the sleeve opening 41 and the valve shaft opening 33 is zero, the whole blending butterfly valve is completely closed, and no fluid flows out; when the intersection of the sleeve opening 41 and the valve shaft opening 33 is not zero while keeping the valve plate 31 in the closed state, only the branch flow in the sleeve main body 4 flows out of the blending valve outlet, and the turning wheel 42 is continuously adjusted; when the intersection of the sleeve opening 41 and the valve shaft opening 33 is not zero, the valve shaft 32 is rotated, the sleeve main body 4 is embedded in the valve shaft 32, the intersection of the sleeve opening 41 and the valve shaft opening 33 cannot be changed by rotating the valve shaft 32, the valve plate 31 is in an open state, the blended valve outlet is a mixed fluid, the opening degree of the valve plate 31 is maximum along with the fact that the surface of the valve plate 31 is perpendicular to the flange surface where the first 0-shaped groove 12 of the valve housing main body 1 is located, and the proportion of the two fluids is changed in the process of rotating the valve shaft 32; when the turning wheel 42 is turned while keeping the valve plate 31 in an open state, only the radial main flow exits the admixture valve when the intersection of the sleeve opening 41 and the valve shaft opening 33 is zero.

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

Claims

1. A blending butterfly valve comprises a valve casing main body (1), a flange cover (2), a valve plate main body (3) and a sleeve pipe main body (4), and is characterized in that the valve casing main body (1) is formed by combining two valve casing units which are oppositely arranged and have circular cavities in the inner parts, the upper end and the lower end of each valve casing unit are flange surfaces, the flange surfaces separated by the two valve casing units are provided with a plurality of first bolt holes (11) close to the outer edge and are provided with first O-shaped grooves (12) along the inner edge, the two valve casing units are enclosed by two flanges (13) vertical to the central shaft of the valve casing main body (1), the two flanges (13) are provided with a plurality of second bolt holes (14), and the flange surfaces contacted by the two valve casing units are provided with second O-shaped grooves (15) along the inner edge and are provided with a plurality of third bolt holes (16) close to the outer edge;

the two flanges (13) are respectively and correspondingly provided with the flange covers (2), the flange covers (2) are hollow circular-tube-shaped bosses, fourth bolt holes (21) corresponding to the second bolt holes (14) are formed in the flange covers (2), and circular arc curved surfaces (22) tangent to the cylindrical inner walls of the valve shell main body (1) are arranged at the circular tube ends of the flange covers (2);

the valve plate main body (3) is installed in the valve casing main body (1), the valve plate main body (3) is composed of a valve plate (31) and a valve shaft (32), the valve plate (31) is a circular plate and is fixed on the valve shaft (32), the valve shaft (32) is sleeved in the two flange covers (2), one end of the valve shaft (32) is closed, a valve shaft opening (33) with a certain radian is formed in the side surface, located in the valve casing main body (1), of the valve shaft (32), an opening is formed in the other end of the valve shaft (32), and four axisymmetric bosses (34) are arranged along the opening;

the sleeve main body (4) extends into the valve shaft (32) from the opening of the valve shaft, the sleeve main body (4) and the valve shaft (32) share the same axis and are tightly attached to the inner wall of the valve shaft, a sleeve opening (41) corresponding to the valve shaft opening (33) is formed in the sleeve main body (4), one end, located in the valve shaft (32), of the sleeve main body (4) is sealed, the other end of the sleeve main body is provided with a rotating wheel (42), the rotating wheel (42) is provided with four through hole arc grooves (43), the four through hole arc grooves (43) are sleeved on the boss (34) in a one-to-one correspondence mode, and the length of the through hole arc grooves (43) is longer than that of the boss (34).

2. The blending butterfly valve of claim 1, wherein the valve shaft opening (33) is the same circular arc as the sleeve opening (41).

3. A blended butterfly valve according to claim 1, characterised in that a gap is left between the closed end of the sleeve body (4) and the inner cavity of the valve shaft (32).

4. A blending butterfly valve according to claim 1, characterized in that said flange (13) is provided with an arc groove (17) connected to said second O-groove (15), said second O-groove (15) and said arc groove (17) are fitted with a drum seal (5), said drum seal (5) is composed of an O-ring segment (51) matching said second O-groove (15) and an arc seal segment (52) matching said arc groove (17).

5. A blending butterfly valve according to claim 1, characterized in that the valve plate (31) abuts against the inner wall of the valve housing body (1).

6. A blending butterfly valve according to claim 1, characterised in that said valve shaft (32) is coaxial with said cover flange (2) and abuts against its inner wall.

7. A blending butterfly valve according to claim 1, characterized in that four bosses (34) are sized to match the through hole arc slot (43), and that when the runner (42) is rotated back and forth, the bosses (34) reach the two ends of the corresponding through hole arc slot (43) and a maximum or zero intersection of the sleeve opening (41) and the valve shaft opening (33) is achieved.