Impact-resistant flange type butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and discloses an impact-resistant flange type butterfly valve which solves the problem that an existing butterfly valve is poor in impact resistance and comprises a butterfly valve body, a valve plate is arranged in the butterfly valve body, and a driver connected with the valve plate is arranged at the top end of the butterfly valve body in a penetrating mode. A first arc-shaped inclined face and a second arc-shaped inclined face are symmetrically arranged on the two sides of the valve plate in a central mode, and a first arc-shaped limiting lap joint protruding rib and a second arc-shaped limiting lap joint protruding rib which are matched with the first arc-shaped inclined face and the second arc-shaped inclined face are fixedly arranged on the two sides of the interior of the butterfly valve body respectively. A first limiting block and a second limiting block which are matched with the valve plate are fixedly arranged at the top end and the bottom end in the butterfly valve body correspondingly. Through the butterfly valve, the overall impact resistance can be improved, and then the service life of the butterfly valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to butterfly valve technical field, concretely is a kind of flange butterfly valve of impact resistance. BACKGROUND

[0002] The butterfly valve is a kind of valve, which is mainly used for cutting and throttling in pipeline, and the disc is rotated around the valve shaft to achieve opening and closing. In the open state, the flow of medium will impact the valve plate. Due to the installation gap of the worm gear in the butterfly valve control assembly, if the force on the valve plate is uneven during the impact process, the valve plate will shake, which will cause reciprocating collision between the worm gear and the worm, and not only easy to cause wear, but also easy to produce noise, and also affect the service life of the valve plate. Therefore, the flange butterfly valve of impact resistance is provided. SUMMARY

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a kind of flange butterfly valve of impact resistance, effectively solve the problem of poor impact resistance of existing butterfly valve.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of flange butterfly valve of impact resistance, including butterfly valve main body, the inside of butterfly valve main body is provided with valve plate, the top of butterfly valve main body is inserted and is provided with the driver connected with valve plate, the two sides of valve plate are symmetrically provided with arc inclined plane one and arc inclined plane two, the two sides in butterfly valve main body are respectively fixedly provided with arc-shaped limit lap rib one and arc-shaped limit lap rib two matched with arc inclined plane one and arc inclined plane two, the top and bottom of butterfly valve main body inside are fixedly provided with limit block one and limit block two matched with valve plate.

[0005] Preferably, the limit block one and the limit block two are composed of a center limit block, a flow guide cone one and a flow guide cone two, the flow guide cone one and the flow guide cone two are fixedly connected to the two ends of the center limit block, and the center limit block, the flow guide cone one and the flow guide cone two are welded to the inner side wall of the butterfly valve main body.

[0006] Preferably, the arc-shaped limit lap rib one and the arc-shaped limit lap rib two are composed of a metal rib and an arc-shaped sealing gasket, the metal rib is welded to the inner side wall of the butterfly valve main body, and the arc-shaped sealing gasket is connected to one side of the metal rib close to the valve plate.

[0007] Preferably, the metal rib has an arc-shaped clamping groove on one side close to the arc-shaped sealing gasket, and the arc-shaped sealing gasket has a clamping rib fixedly connected to the arc-shaped clamping groove on one side.

[0008] Preferably, one end of the butterfly valve main body is fixedly provided with a flange plate one, and the other end of the butterfly valve main body is fixedly provided with a flange plate two.

[0009] Preferably, the flange plate one and the flange plate two are provided with sealing gaskets and O-shaped sealing rings on the sides away from the butterfly valve body.

[0010] Preferably, the flange plate one and the flange plate two are provided with annular grooves matched with the O-shaped sealing rings on the sides away from the butterfly valve body, and the flange plate one and the flange plate two are provided with a plurality of bolt mounting holes.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] (1) In the work, the arc-shaped inclined surface one and the arc-shaped inclined surface two are symmetrically arranged on the two sides of the valve plate, and the limiting block one and the limiting block two are arranged by the center limiting block, the flow cone one and the flow cone two, so that the valve plate is pressed by the impact force of the fluid when the valve plate is in the open state, the valve plate is attached to the flow cone one and the flow cone two, the valve plate is prevented from reciprocating, and the stability of the valve plate is improved.

[0013] (2) The arc-shaped limiting lap convex rib one and the arc-shaped limiting lap convex rib two are arranged by the metal rib and the arc-shaped sealing gasket, so that the valve plate is limited when the valve plate is closed, the stability is further improved, the sealing property of the valve plate and the butterfly valve body is improved, and liquid leakage is avoided.

[0014] (3) The sealing gasket and the O-shaped sealing ring are arranged on the side edges of the flange plate one and the flange plate two, the sealing property of the pipeline connection is improved, the impact resistance is further improved, and the situation that the impact force is too large to cause liquid leakage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute limitations to the utility model.

[0016] In the drawings:

[0017] Figure 1 It is a flange type butterfly valve structure diagram of the utility model impact resistance;

[0018] Figure 2 It is a butterfly valve body structure diagram of the utility model;

[0019] Figure 3 It is a flange type butterfly valve overhead sectional view one of the utility model impact resistance;

[0020] Figure 4 It is a flange type butterfly valve overhead sectional view two of the utility model impact resistance;

[0021] Figure 5 It is a limiting block one structure diagram of the utility model.

[0022] Figure 6 It is a local structure diagram of the arc-shaped limiting lap convex rib one of the utility model;

[0023] In the figure: 1, butterfly valve body; 2, valve plate; 3, driver; 4, arc-shaped slope one; 5, arc-shaped slope two; 6, arc-shaped limiting lap convex rib one; 7, arc-shaped limiting lap convex rib two; 8, limiting block one; 9, limiting block two; 10, center limiting block; 11, flow guide cone one; 12, flow guide cone two; 13, metal rib; 14, arc-shaped sealing gasket; 15, arc-shaped clamping groove; 16, clamping rib; 17, flange plate one; 18, flange plate two; 19, sealing washer; 20, O-shaped sealing ring; 21, annular groove; 22, bolt mounting hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] By Figures 1 to 4 Given, the utility model discloses a flange type butterfly valve of impact resistance, including butterfly valve body 1, the inside of butterfly valve body 1 is provided with valve plate 2, the top of butterfly valve body 1 is inserted and is provided with the driver 3 connected with valve plate 2, the both sides of valve plate 2 are provided with arc-shaped slope one 4 and arc-shaped slope two 5 in center symmetry, the both sides in the inside of butterfly valve body 1 are fixedly provided with arc-shaped limiting lap convex rib one 6 and arc-shaped limiting lap convex rib two 7 matched with arc-shaped slope one 4 and arc-shaped slope two 5, the top and bottom in the inside of butterfly valve body 1 are fixedly provided with limiting block one 8 and limiting block two 9 matched with valve plate 2,

[0026] When valve plate 2 is in the open state, the fluid can be guided by the action of arc-shaped slope one 4, the fluid flows along the side of arc-shaped slope one 4, so that a lateral thrust is generated on valve plate 2, so that valve plate 2 is tightly attached to limiting block one 8 and limiting block two 9, limiting effect is realized by limiting block one 8 and limiting block two 9, so that reciprocating swing of valve plate 2 due to uneven stress can be avoided, when valve plate 2 is in the closed state, limiting and sealing of valve plate 2 are realized by arc-shaped limiting lap convex rib one 6 and arc-shaped limiting lap convex rib two 7, further improving the impact resistance and sealing performance of valve plate 2;

[0027] By Figure 1 , Figure 3 , Figure 4 And Figure 5The limiting block one 8 and the limiting block two 9 are both composed of the center limiting block 10, the guide cone one 11 and the guide cone two 12, the guide cone one 11 and the guide cone two 12 are fixedly connected to the two ends of the center limiting block 10, and the center limiting block 10, the guide cone one 11 and the guide cone two 12 are weldedly connected with the inner side wall of the butterfly valve body 1;

[0028] The guide cone one 11 and the guide cone two 12 can guide the fluid, so as to avoid the fluid from generating resistance at the front end of the center limiting block 10 and vortex at the tail end of the center limiting block 10;

[0029] The Figure 1 , Figure 2 , Figure 4 and Figure 6 The arc-shaped limiting lap rib one 6 and the arc-shaped limiting lap rib two 7 are both composed of the metal rib 13 and the arc-shaped sealing gasket 14, the metal rib 13 is weldedly connected to the inner side wall of the butterfly valve body 1, the arc-shaped sealing gasket 14 is connected to one side of the metal rib 13 close to the valve plate 2, one side of the metal rib 13 close to the arc-shaped sealing gasket 14 is provided with the arc-shaped clamping groove 15, and one side of the arc-shaped sealing gasket 14 is fixedly provided with the clamping rib 16 connected with the arc-shaped clamping groove 15;

[0030] The metal rib 13 can limit the valve plate 2, the arc-shaped sealing gasket 14 can improve the sealing property, and the arc-shaped clamping groove 15 and the clamping rib 16 can be clamped and connected, so as to facilitate the replacement of the arc-shaped sealing gasket 14 in a periodical manner;

[0031] The Figure 1 and Figure 2 One end of the butterfly valve body 1 is fixedly provided with the flange plate one 17, the other end of the butterfly valve body 1 is fixedly provided with the flange plate two 18, the flange plate one 17 and the flange plate two 18 away from the butterfly valve body 1 are both provided with the sealing gasket ring 19 and the O-shaped sealing ring 20, the flange plate one 17 and the flange plate two 18 away from the butterfly valve body 1 are both provided with the annular groove 21 matched with the O-shaped sealing ring 20, and the flange plate one 17 and the flange plate two 18 are provided with a plurality of bolt mounting holes 22;

[0032] The sealing gasket ring 19 and the O-shaped sealing ring 20 can improve the sealing property of the flange plate one 17 and the flange plate two 18 connected with the pipeline, and can also improve the impact resistance effect, so as to avoid the liquid leakage caused by the excessive fluid impact force.

[0033] In work, by setting arc inclined plane one and arc inclined plane two on both sides of the valve plate in the center symmetry and setting the limit block one and limit block two which are composed of the center limit block, guide cone one and guide cone two, when the valve plate is in the open state, the extrusion force can be generated on the valve plate by the impact force of the fluid, so that the valve plate is attached to the guide cone one and guide cone two, avoiding the reciprocating swing of the valve plate, and improving the stability of the valve plate; By setting the arc limit lap convex rib one and arc limit lap convex rib two which are composed of metal rib and arc sealing gasket, the valve plate can be limited when it is closed, further improving its stability, and at the same time, the sealing of the connection between the valve plate and the butterfly valve body can be improved, avoiding liquid leakage; By setting sealing washer and O-shaped sealing ring on the side edge of flange plate one and flange plate two, the sealing of the connection with the pipeline can be improved, further improving the impact resistance, avoiding the situation that the impact force is too large to cause liquid leakage.

Claims

1. An impact resistant flanged butterfly valve comprising a butterfly valve body (1), characterized in that: The inside of the butterfly valve body (1) is provided with a valve plate (2), the top end of the butterfly valve body (1) is provided with a driver (3) connected with the valve plate (2), the two sides of the valve plate (2) are symmetrically provided with arc inclined surface one (4) and arc inclined surface two (5), the inside of the butterfly valve body (1) is fixedly provided with arc-shaped limiting lap rib one (6) and arc-shaped limiting lap rib two (7) matched with the arc-shaped inclined surface one (4) and the arc-shaped inclined surface two (5) respectively, and the top end and the bottom end of the butterfly valve body (1) are fixedly provided with limiting block one (8) and limiting block two (9) matched with the valve plate (2).

2. The flanged butterfly valve according to claim 1, wherein: The limiting block one (8) and the limiting block two (9) are composed of a center limiting block (10), a flow guide cone one (11) and a flow guide cone two (12), the flow guide cone one (11) and the flow guide cone two (12) are fixedly connected to the two ends of the center limiting block (10), and the center limiting block (10), the flow guide cone one (11) and the flow guide cone two (12) are welded to the inner side wall of the butterfly valve body (1).

3. The flanged butterfly valve of claim 1, wherein: The arc-shaped limiting lap rib one (6) and the arc-shaped limiting lap rib two (7) are composed of a metal rib (13) and an arc-shaped sealing gasket (14), the metal rib (13) is welded to the inner side wall of the butterfly valve body (1), and the arc-shaped sealing gasket (14) is connected to one side of the metal rib (13) close to the valve plate (2).

4. The flanged butterfly valve of claim 3, wherein: The metal rib (13) is provided with an arc-shaped clamping groove (15) on one side close to the arc-shaped sealing gasket (14), and one side of the arc-shaped sealing gasket (14) is fixedly provided with a clamping rib (16) connected with the arc-shaped clamping groove (15).

5. The flanged butterfly valve of claim 1, wherein: One end of the butterfly valve body (1) is fixedly provided with a flange plate one (17), and the other end of the butterfly valve body (1) is fixedly provided with a flange plate two (18).

6. The flange-type butterfly valve according to claim 5, wherein: The flange plate one (17) and the flange plate two (18) are provided with a sealing washer (19) and an O-shaped sealing ring (20) on the side away from the butterfly valve body (1).

7. An impact resistant, flanged butterfly valve according to claim 6, characterized in that: The flange plate one (17) and the flange plate two (18) are provided with an annular groove (21) matched with the O-shaped sealing ring (20) on the side away from the butterfly valve body (1), and a plurality of bolt mounting holes (22) are formed in the flange plate one (17) and the flange plate two (18).

Images