Butterfly plate assembly of wafer butterfly valve

Abstract

The utility model discloses a butterfly plate assembly of a wafer butterfly valve, which comprises a butterfly plate rotationally arranged in a valve body through a valve rod, a mounting hole is arranged on the valve body, a valve seat is arranged in the valve body, and the butterfly plate is in sealing fit with the valve seat; a flow guide groove perpendicular to the valve rod is formed in the plate face of the butterfly plate, and when the butterfly plate rotates to be in the valve opening state, part of fluid media flowing through the valve body are shunted through the flow guide groove so as to change the flowing path. According to the butterfly valve, the flow guide grooves are formed in the butterfly plate, fluid media are divided, the flowing path of the fluid media can be changed, the situation that fluid directly impacts the butterfly plate is reduced, pressure loss generated when the fluid passes through the butt clamp is reduced, and flow resistance is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the clamping butterfly valve, especially relates to a clamping butterfly valve's butterfly plate subassembly. BACKGROUND

[0002] When the clamping butterfly valve is applied to fluid medium delivery in the semiconductor production process, the fluid medium directly impacting the butterfly plate will form a larger resistance, will impact the clamping valve body, and more importantly, increase the pressure loss of the fluid medium through the clamping valve body, affecting the delivery efficiency of the fluid medium. SUMMARY

[0003] The utility model discloses a clamping butterfly valve's butterfly plate subassembly, which can change the flow path of the fluid medium by opening a flow guide groove on the butterfly plate, thereby reducing the direct impact of the fluid on the butterfly plate, and further reducing the pressure loss when the fluid passes through the clamping butterfly valve, thereby reducing the flow resistance.

[0004] Technical scheme: To achieve the above object, the utility model discloses a clamping butterfly valve's butterfly plate subassembly, which comprises a butterfly plate arranged in the valve body through a valve rod, an installation hole is arranged on the valve body, a valve seat is arranged in the valve body, and the butterfly plate is in sealing cooperation with the valve seat. The plate surface of the butterfly plate is provided with a flow guide groove perpendicular to the valve rod, and part of the fluid medium flowing through the valve body is divided by the flow guide groove to change the flow path when the butterfly plate is rotated to the open valve state.

[0005] Further, the flow guide groove on the butterfly plate has a plurality of flow guide grooves, and the plurality of flow guide grooves are arranged in a direction perpendicular to the axis of the valve rod.

[0006] Further, the flow guide groove is distributed on both sides of the plate surface of the butterfly plate.

[0007] Further, the flow guide groove comprises a first flow guide groove and a second flow guide groove, the first flow guide groove is distributed on the plate surface side of the butterfly plate opposite to the valve rod, the second flow guide groove is distributed on the plate surface side of the butterfly plate on the same side as the valve rod, and the first flow guide groove and the second flow guide groove are distributed in a staggered manner on the plate surface of the butterfly plate.

[0008] Further, the flow guide groove is a through groove structure.

[0009] Further, on the plate surface side of the butterfly plate where the valve rod is located, the second flow guide groove is arranged through the valve rod.

[0010] Beneficial effects: the utility model discloses a butterfly plate is set up the guide groove on, and the fluid medium is shunted to change its flow path to reduce the situation of fluid medium direct impact butterfly plate, reduce the abrasion and improve stability, and then reduce the pressure loss of fluid through the butterfly valve, realize reducing the flow resistance, improve the conveying efficiency of fluid medium, prolong the service life of butterfly valve. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 Structure diagram for butterfly plate being arranged in valve body through valve rod rotation Figure One ;

[0012] Figure 2 Structure diagram for butterfly plate being arranged in valve body through valve rod rotation Figure Two ;

[0013] Figure 3 Structure diagram for butterfly plate and valve rod from side view. DETAILED DESCRIPTION

[0014] The utility model will be described further in connection with the drawings.

[0015] As Figure 1 And Figure 2 The butterfly plate assembly of butterfly valve, including butterfly plate 3 being arranged in valve body 2 through valve rod 1 rotation, is shown in the drawing, and the valve body 2 is provided with mounting hole 20, and the valve body 2 is provided with valve seat 4, and butterfly plate 3 and valve seat 4 seal cooperation;The plate face of butterfly plate 3 is provided with the guide groove 30 perpendicular to valve rod 1, and part of fluid medium passing through valve body 2 is shunted through the guide groove 30 to change flow path when butterfly plate 3 rotates to the open valve state.The utility model discloses a butterfly plate 2 is set up the guide groove 30 on, and the fluid medium is shunted to change its flow path to reduce the situation of fluid medium direct impact butterfly plate 3, reduce the abrasion and improve stability, and then reduce the pressure loss of fluid through the butterfly valve, realize reducing the flow resistance, improve the conveying efficiency of fluid medium, prolong the service life of butterfly valve.

[0016] In order to improve the shunting uniformity of fluid medium, in the utility model, the guide groove 30 on butterfly plate 3 has several, and several guide grooves 30 are arranged and distributed in the direction perpendicular to the axis of valve rod 1.

[0017] As Figure 3As shown, the flow guide groove 30 is distributed on both sides of the plate surface of the butterfly plate 3, and in the fully open state of the butterfly plate 3, the flow guide groove 30 on both sides of the plate surface can realize the shunt effect, more specifically, the flow guide groove 30 includes a first flow guide groove 30a and a second flow guide groove 30b, the first flow guide groove 30a is distributed on the plate surface side of the butterfly plate 3 opposite to the valve rod 1, and the second flow guide groove 30b is distributed on the plate surface side of the butterfly plate 3 on the same side of the valve rod 1, if a one-to-one corresponding positional relationship occurs in the case that the flow guide groove 30 is arranged on both sides of the plate surface of the butterfly plate 3, the butterfly plate 3 will be very thin, thereby reducing the structural strength and stability of the butterfly plate 3, in order to avoid this situation, in the utility model, the first flow guide groove 30a and the second flow guide groove 30b are distributed in a staggered manner on the plate surface of the butterfly plate 3, so that the butterfly plate 3 can also maintain the required structural strength in the case that the flow guide groove 30 is distributed on both sides of the plate surface.

[0018] More specifically, the flow guide groove 30 of the utility model is a through groove structure.

[0019] It is worth noting that the valve rod 1 and the butterfly plate 3 are connected and fixed by fasteners such as bolts and nuts, since the valve rod 1 protrudes from the plate surface of the butterfly plate 3, it will form a large resistance to the fluid medium, in order to prevent the valve rod 1 from affecting the shunt of the flow guide groove 30, the second flow guide groove 30b is arranged through the valve rod 1 on the plate surface side of the butterfly plate 3 where the valve rod 1 is located.

[0020] The above is only the preferred embodiment of the utility model, it should be pointed out that: for ordinary skilled person in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. A butterfly plate assembly for a wafer butterfly valve, comprising a butterfly plate (3) rotatably mounted in a valve body (2) via a valve stem (1), a mounting hole (20) being provided on the valve body (2), a valve seat (4) being provided in the valve body (2), the butterfly plate (3) and the valve seat (4) being in sealing engagement; and characterized in that: The plate surface of the butterfly plate (3) is provided with a guide groove (30) perpendicular to the valve stem (1); when the butterfly plate (3) rotates to the valve-opening state, part of the fluid medium flowing through the valve body (2) is diverted through the guide groove (30) to change the flow path.

2. The butterfly plate assembly of a wafer butterfly valve according to claim 1, characterized in that: The butterfly plate (3) has a plurality of guide grooves (30), and the plurality of guide grooves (30) are arranged at intervals in a direction perpendicular to the axis of the valve stem (1).

3. The butterfly plate assembly of a wafer butterfly valve according to claim 2, characterized in that: The guide grooves (30) are distributed on both side surfaces of the butterfly plate (3).

4. The butterfly plate assembly of a wafer butterfly valve according to claim 3, characterized in that: The guide groove (30) includes a first guide groove (30a) and a second guide groove (30b), wherein the first guide groove (30a) is distributed on the plate surface side of the butterfly plate (3) opposite to the valve stem (1), and the second guide groove (30b) is distributed on the plate surface side of the butterfly plate (3) on the same side as the valve stem (1), and the first guide groove (30a) and the second guide groove (30b) are staggered on the plate surface of the butterfly plate (3).

5. The butterfly plate assembly of a wafer butterfly valve according to claim 4, characterized in that: The guide groove (30) is a through groove structure.

6. The butterfly plate assembly of a wafer butterfly valve according to claim 4, characterized in that: On the plate surface side of the butterfly plate (3) where the valve stem (1) is located, the second guide groove (30b) is provided through the valve stem (1).

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