CN113357383B - Blending butterfly valve - Google Patents

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

A blending butterfly valve

technical field

The invention belongs to the technical field of fluid blending valves, in particular to a blending butterfly valve.

Background technique

Butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure. It can be opened and closed by rotating the valve plate around the valve shaft. It has the characteristics of simple structure, excellent adjustment performance, small opening and closing torque and convenient installation. , so it is widely used in fluid dispensing systems. The blending of fluids is widely used in industry, medicine, aerospace and other fields. The blending valve is installed in the fluid blending pipe section to adjust and control the proportion and speed of fluid blending and other fluid blending parameters.

At present, the plunger type blending valve can only control the flow of one kind of fluid, and the control performance and blending ability are poor.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a blending butterfly valve to solve the above-mentioned problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solution: a blended butterfly valve, comprising a valve housing body, a flange cover, a valve plate body, and a casing body, wherein the valve housing body consists of two oppositely arranged and circular inner The valve housing unit of the cavity is assembled, the upper and lower ends of the valve housing unit are flange surfaces, and the flange surfaces separated by the two valve housing units are provided with a plurality of first bolt holes near the outer edge and along the inner The edge is provided with a first O-shaped groove, the two valve shell units enclose two flanges perpendicular to the central axis of the valve shell body, and a plurality of second bolt holes are opened on the two flanges. A second O-shaped groove is formed along the inner edge of the flange surfaces of each of the valve housing units in contact, and a plurality of third bolt holes are arranged near the outer edge;

The two flanges are respectively provided with the flange cover, the flange cover is a hollow cylindrical boss, and the flange cover is provided with a fourth bolt corresponding to the second bolt hole a hole, the end of the flange cover circular tube is provided with a circular arc surface tangent to the cylindrical inner wall of the main body of the valve housing;

The valve plate main body is installed 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 a circular plate and is fixed on the valve shaft, and the valve shaft is sleeved on the valve shaft. In the two flange covers, one end of the valve shaft is closed and a valve shaft opening with a certain arc is opened on the side of the valve housing body, and the other end of the valve shaft is provided with an opening and four along the opening are provided. Axisymmetric boss;

The sleeve body extends from the valve shaft opening to the inside thereof, the sleeve body is coaxial with the valve shaft and is close to the inner wall thereof, and a sleeve corresponding to the valve shaft opening is provided on the sleeve body. One end of the sleeve body located in the valve shaft is closed, and the other end is provided with a runner, the runner is provided with four through-hole arc grooves, and the four through-hole arc grooves are one by one. Correspondingly sleeved on the boss, the length of the arc groove of the through hole is longer than the length of the boss.

Preferably, the valve shaft opening and the sleeve opening have the same central radian.

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

Preferably, the flange is provided with an arc-shaped groove connected with the second O-shaped groove, and a drum-shaped sealing ring is installed on the second O-shaped groove and the arc-shaped groove, so The drum-shaped sealing ring is composed of an O-shaped sealing ring segment matched with the second O-shaped groove and a circular arc sealing ring segment matched with the arc-shaped groove.

Preferably, the valve plate is in close contact with the inner wall of the valve housing main body.

Preferably, the valve shaft is coaxial with the flange cover and is in close contact with the inner wall thereof.

Preferably, the four bosses match the size of the arc groove of the through hole. When the runner is rotated back and forth, the bosses can reach both ends of the arc groove corresponding to the through hole and realize the opening of the sleeve. Maximum or zero intersection with the valve shaft opening.

Compared with the prior art, the beneficial effects of the present invention are:

1. The blending butterfly valve can control two kinds of fluids separately, and can realize the outlet of three kinds of fluids, including two kinds of single fluids and one kind of mixed fluids, with superior control performance;

2. Due to the obstruction of the valve plate, the fluid will generate turbulent flow in the mixing area of the valve plate, and the occurrence of turbulent flow strengthens the ability of fluid mixing;

3. The components in the blended butterfly valve are easy to replace, especially the casing components in the blended butterfly valve can be replaced with materials with different properties such as ceramics to deal with blended fluids with different physical properties.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the partial sectional structure schematic diagram of the present invention;

Fig. 3 is the partial cross-sectional structural schematic diagram of the valve housing main body of the present invention;

4 is a schematic structural diagram of a flange cover of the present invention;

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

6 is a schematic diagram of the structure of the casing main body of the present invention;

FIG. 7 is a schematic structural diagram of the drum-shaped sealing ring of the present invention.

In the figure: 1. Main body of valve housing; 11. First bolt hole; 12. First O-shaped groove; 13. Flange; 14. Second bolt hole; 15. Second O-shaped groove; 16. Third Bolt hole; 17, arc groove; 2, flange cover; 21, fourth bolt hole; 22, arc surface; 3, valve plate body; 31, valve plate; 32, valve shaft; 33, valve shaft opening ; 34, boss; 4, casing body; 41, casing opening; 42, runner; 43, through-hole arc groove; 5, drum seal; 51, O-ring segment; 52, arc seal circle segment.

Detailed ways

The technical solutions in 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Embodiment 1: Please refer to Figures 1-7, the present invention provides a technical solution: a blended butterfly valve, comprising a valve housing body 1, a flange cover 2, a valve plate body 3, and a casing body 4. The valve housing The main body 1 is composed of two valve housing units arranged opposite each other and having a circular cavity inside. The upper and lower ends of the valve housing unit are flange surfaces, and the flange surfaces separated by the two valve housing units are close to the outside. The edges are provided with a plurality of first bolt holes 11 and the first O-shaped grooves 12 are provided along the inner edge. The two valve housing units enclose two flanges 13 perpendicular to the central axis of the valve housing body 1. Each of the flanges 13 is provided with a plurality of second bolt holes 14 , and the flange surfaces of the two valve housing units in contact are provided with a second O-shaped groove 15 along the inner edge and a plurality of second O-shaped grooves 15 near the outer edge The third bolt hole 16;

The two flanges 13 are respectively provided with the flange cover 2, the flange cover 2 is a hollow cylindrical boss, and the flange cover 2 is provided with the second bolt hole 14. Corresponding to the fourth bolt hole 21, the circular tube end of the flange cover 2 is provided with a circular arc surface 22 that is tangent to the cylindrical inner wall of the valve housing body 1;

The valve body 1 is installed with the valve plate body 3 , the valve plate 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, and a valve shaft opening 33 with a certain arc is opened on the side of the valve casing body 1. The valve shaft The other end of 32 is provided with an opening and four axially symmetrical bosses 34 are provided along the opening;

The sleeve body 4 extends from the opening of the valve shaft 32 into the inside thereof, the sleeve body 4 is coaxial with the valve shaft 32 and is close to the inner wall thereof, and the sleeve body 4 is provided with an opening corresponding to the valve shaft 32 . The sleeve opening 41 corresponding to the valve shaft opening 33, one end of the sleeve body 4 located in the valve shaft 32 is closed, and the other end is provided with a runner 42, and the runner 42 is provided with four through-hole arc grooves 43. The four through-hole arc slots 43 are sleeved on the bosses 34 in a one-to-one correspondence, and the lengths of the through-hole arc slots 43 are longer than the lengths of the bosses 34 .

In this embodiment, the relative opening of the valve plate 31 and the valve housing body 1 can be changed by rotating the valve shaft 32. The valve plate 31 is in a closed state. When the intersection of the sleeve opening 41 and the valve shaft opening 33 is zero, the entire blending The butterfly valve is completely closed, and no fluid flows out; keep the valve plate 31 closed, continue to adjust the runner 42, when the intersection of the sleeve opening 41 and the valve shaft opening 33 is not zero, the blending valve outlet only has the sleeve body When the intersection of the sleeve opening 41 and the valve shaft opening 33 is kept non-zero, the valve shaft 32 is rotated, because the sleeve body 4 is embedded in the valve shaft 32, rotating the valve shaft 32 will not change the sleeve opening 41 and the valve shaft opening 33, the valve plate 31 will be in an open state, and the blending valve outlet will be mixed fluid; while keeping the valve plate 31 in an open state, turn the runner 42, when the sleeve opening 41 and the valve shaft opening 33 When the intersection is zero, only the radial main flow flows out of the blending valve.

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

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

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

In this embodiment, it is used to eliminate extrusion caused by thermal expansion.

Specifically, the flange 13 is provided with an arc-shaped groove 17 connected to the second O-shaped groove 15 , and a drum is installed on the second O-shaped groove 15 and the arc-shaped groove 17 The drum-shaped sealing ring 5 is composed of an O-shaped sealing ring segment 51 matched with the second O-shaped groove 15 and an arc-shaped sealing ring segment 52 matched with the arc-shaped groove 17 .

In this embodiment, the sealing performance of the valve housing main body 1 and the valve housing main body 1 and the flange cover 2 is ensured by the drum-shaped sealing ring 5 .

Specifically, the valve plate 31 is in close contact with the inner wall of the valve housing main body 1 .

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

Specifically, the valve shaft 32 is coaxial with the flange cover 2 and is in close contact with the inner wall thereof.

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

Specifically, the four bosses 34 match the size of the through-hole arc grooves 43 . When the runner 42 is rotated back and forth, the bosses 34 can reach the two ends corresponding to the through-hole arc grooves 43 and realize The case where the intersection of the sleeve opening 41 and the valve shaft opening 33 is maximum or zero.

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

In order to facilitate the understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process will be described in detail below.

Working principle: Rotating the valve shaft 32 can change the relative opening of the valve plate 31 and the valve shell body 1. When the valve plate 31 is parallel to the flange surface of the first O-shaped groove 12 of the valve shell body 1, the valve plate 31 In the closed state, when the runner 42 is rotated, when the intersection of the sleeve opening 41 and the valve shaft opening 33 is zero, the entire blending butterfly valve is completely closed, and no fluid flows out; keep the valve plate 31 in the closed state, continue to adjust In the runner 42, 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 from the blending valve outlet; When it is zero, rotate the valve shaft 32, because the casing main body 4 is embedded in the valve shaft 32, rotating the valve shaft 32 will not change the intersection of the casing opening 41 and the valve shaft opening 33, then the valve plate 31 will be in the open state, and the mixing The valve outlet is a mixed fluid. As the face of the valve plate 31 is perpendicular to the flange surface of the first O-shaped groove 12 of the valve shell body 1, the opening of the valve plate 31 reaches the maximum. In the process of rotating the valve shaft 32, two The ratio of the fluid will change; when the valve plate 31 is kept open and the runner 42 is rotated, when the intersection of the sleeve opening 41 and the valve shaft opening 33 is zero, only the radial main flow flows out of the blending valve.

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

Claims (7)

1. A blended butterfly valve, comprising a valve housing body (1), a flange cover (2), a valve plate body (3), and a casing body (4), characterized in that the valve housing body (1) is composed of Two valve housing units arranged opposite to each other and having a circular cavity inside are assembled, the upper and lower ends of the valve housing unit are flange surfaces, and the flange surfaces of the two valve housing units separated are provided with a A plurality of first bolt holes (11) and first O-shaped grooves (12) are arranged along the inner edge, and the two valve housing units enclose two flanges perpendicular to the central axis of the valve housing body (1) (13), the two flanges (13) are provided with a plurality of second bolt holes (14), and the flange surfaces of the two valve housing units contacting are provided with second O-shaped grooves along the inner edge (15) and a plurality of third bolt holes (16) are provided near the outer edge; The two flanges (13) are respectively provided with the flange covers (2), the flange covers (2) are hollow cylindrical bosses, and the flange covers (2) are provided with The fourth bolt hole (21) corresponding to the second bolt hole (14), the circular pipe end of the flange cover (2) is provided with a circular arc tangent to the cylindrical inner wall of the valve housing body (1) surface(22); The valve plate main body (3) is installed in the valve housing main body (1), the valve plate main body (3) is composed of a valve plate (31) and a valve shaft (32), and the valve plate (31) is A circular plate is fixed on the valve shaft (32), the valve shaft (32) is sleeved in the two flange covers (2), and one end of the valve shaft (32) is closed and located in the valve A valve shaft opening (33) with a certain arc is opened on the side surface of the shell body (1), the other end of the valve shaft (32) is provided with an opening and four axially symmetrical bosses (34) are provided along the opening; The sleeve body (4) protrudes from the opening of the valve shaft (32) into its interior, the sleeve body (4) is coaxial with the valve shaft (32) and is in close contact with the inner wall thereof, and the sleeve The pipe body (4) is provided with a sleeve opening (41) corresponding to the valve shaft opening (33), one end of the sleeve body (4) located in the valve shaft (32) is closed and the other end is provided with There is a runner (42), the runner (42) is provided with four through-hole arc grooves (43), and the four through-hole arc grooves (43) are sleeved on the bosses (34) in one-to-one correspondence , the length of the arc groove (43) of the through hole is longer than the length of the boss (34). 2 . The blending butterfly valve according to claim 1 , wherein the valve shaft opening ( 33 ) and the sleeve opening ( 41 ) have the same central radian. 3 . 3 . The blending butterfly valve according to claim 1 , wherein a gap is left between the closed end of the sleeve body ( 4 ) and the inner cavity of the valve shaft ( 32 ). 4 . 4. A hybrid butterfly valve according to claim 1, characterized in that, the flange (13) is provided with an arc groove (17) connected with the second O-shaped groove (15) , a drum-shaped sealing ring (5) is installed on the second O-shaped groove (15) and the arc-shaped groove (17), and the drum-shaped sealing ring (5) is formed with the second O-shaped It is composed of an O-shaped sealing ring segment (51) matched with the groove (15) and a circular arc sealing ring segment (52) matched with the arc-shaped groove (17). 5. A blending butterfly valve according to claim 1, characterized in that, the valve plate (31) is in close contact with the inner wall of the valve housing main body (1). 6 . The blending butterfly valve according to claim 1 , wherein the valve shaft ( 32 ) is coaxial with the flange cover ( 2 ) and is in close contact with its inner wall. 7 . 7. A blending butterfly valve according to claim 1, characterized in that the four bosses (34) are matched in size with the through-hole arc grooves (43), and the runner (42) is rotated back and forth , the bosses (34) can reach the two ends of the arc grooves (43) corresponding to the through holes and realize the maximum or zero intersection of the sleeve opening (41) and the valve shaft opening (33). Happening.

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