CN218031444U - Sanitary butterfly valve capable of avoiding leakage of water hammer - Google Patents

Abstract

The utility model provides an avoid sanitary-grade butterfly valve of water hammer leakage belongs to valve technical field. The utility model provides an avoid sanitary-grade butterfly valve of water hammer leakage, sealing washer including the annular setting, the periphery side seted up two through-holes, the through-hole with the sealing washer central point sets up for central symmetry, be equipped with switch module in the sealing washer, switch module includes the raft board, the periphery side of raft board has linked firmly two valve plate poles, and two valve plate poles run through the through-hole of sealing washer, one of them the valve plate pole is kept away from one side of sealing washer central point is equipped with square post, square post demountable installation has the spanner, the both sides terminal surface of raft board has linked firmly the open-ended stopper, the utility model discloses a setting of switch module, when the inflation of inflation piece, can effectual increase butterfly valve's leakproofness, the water hammer phenomenon of avoiding producing when closing the butterfly valve simultaneously makes the butterfly valve take place the part and leak.

Description

Sanitary butterfly valve capable of avoiding leakage of water hammer

Technical Field

The utility model belongs to the valve field especially relates to an avoid sanitary-grade butterfly valve of water hammer leakage.

Background

The sanitary butterfly valve adopts standard electronic polishing, ensures clean smooth surface, has no medium accumulation area and can not generate potential pollution. Quick assembly disassembly valve makes the valve open with the maintenance swift easy, makes the process down time shorten, the butterfly valve when closing and opening, can produce the water hammer phenomenon, the rivers of water hammer phenomenon can strike the dish board, can cause certain damage to parts such as dish board on the one hand, on the other hand when the water impact, the dynamics is great, has a quantitative liquid leakage, the leakproofness is not strong.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a sanitary-grade butterfly valve who avoids the water hammer to leak.

The utility model discloses a realize above-mentioned purpose, provide following technical scheme, a avoid sanitary-grade butterfly valve that water hammer leaked, including the sealing washer of annular setting, its characterized in that: two through holes are formed in the outer peripheral side of the sealing ring, the through holes are symmetrically arranged by taking the center point of the sealing ring as a center, and a switch assembly is arranged in the sealing ring;

switch module includes the raft, the periphery side of raft has linked firmly two valve plate poles, and two valve plate poles run through the through-hole of sealing washer, one of them the valve plate pole is kept away from one side of sealing washer central point is equipped with square post, square post demountable installation has the spanner, the both sides terminal surface of raft has linked firmly the open-ended stopper, the periphery side cover of stopper is equipped with the open-ended and strikes the lid, it is close to strike the lid a side terminal surface of raft has linked firmly the inflation piece, be equipped with the inflation chamber in the inflation piece.

Optionally, the two sides of the sealing ring are provided with valve bodies symmetrically arranged by taking the sealing ring as a center, one side of the valve body, which is far away from the sealing ring, is provided with threads, one side end face of the valve body, which is close to the sealing ring, is provided with a groove, and the groove corresponds to the valve plate rod.

Optionally, the opening direction orientation in the stopper is kept away from one side of raft, the opening direction orientation of assaulting the lid is close to one side of raft, the stopper inner wall with link firmly the spring between the inner wall of assaulting the lid.

Optionally, the expansion block extends to a side away from the center line of the sealing ring, and a part of the expansion block located on the impact cover is a convex part.

Optionally, the section of the expansion cavity is divided into a circular part and a strip-shaped part, wherein the circular part is positioned at the convex part of the expansion block.

Optionally, an elastic support assembly is arranged in the circular portion of the expansion cavity, the elastic support assembly is composed of at least two support rings and two orbital rings, and the support rings are circumferentially distributed on the orbital rings.

Optionally, the material of the sealing ring and the expansion block may be one of rubber and resin.

To sum up, compared with the prior art, the utility model has the following beneficial effects:

1. because the setting of switch module, so the accessible strikes the lid and extrudees the inflation piece, makes the inflation piece inflation, can the effectual leakproofness that increases the butterfly valve, avoids the water hammer phenomenon that produces simultaneously when closing the butterfly valve to make the butterfly valve take place the part and leak.

2. Because the setting of spring makes the rivers impact of water hammer phenomenon when covering, can be cushioned by the spring, can effectually avoid the part of water hammer phenomenon damage butterfly valve, increases the security and the life of butterfly valve.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 isbase:Sub>A cross-sectional view taken along the linebase:Sub>A-base:Sub>A of fig. 2 according to the present invention.

Fig. 4 is an enlarged view of the point B in fig. 3 according to the present invention.

Fig. 5 is a perspective view of the elastic support assembly according to the present invention.

10. A seal ring; 11. a valve plate stem; 12. a wrench; 13. a valve body; 14. a raft plate; 15. an impact cover; 16. a spring; 17. a limiting block; 18. an expansion block; 19. an elastic support assembly.

Detailed Description

In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.

As shown in the figures 1-5, a sanitary butterfly valve for preventing water hammer leakage comprises a seal ring 10 which is annularly arranged, wherein two sides of the seal ring 10 are provided with valve bodies 13 which are symmetrically arranged by taking the seal ring 10 as a center, one side of each valve body 13, which is far away from the seal ring 10, is provided with threads, one end face of each valve body 13, which is close to the seal ring 10, is provided with a groove, the outer peripheral side of the seal ring 10 is provided with two through holes, the through holes are symmetrically arranged by taking the center point of the seal ring 10 as a center, a switch assembly is arranged in the seal ring 10 and comprises a raft 14, the outer peripheral side of the raft 14 is fixedly connected with two valve plate rods 11, the grooves correspond to the valve plate rods 11, and the joints of the grooves and the valve plate rods 11 are provided with seal rings to prevent the butterfly valve from leaking;

two valve plate poles 11 run through the through-hole of sealing washer 10, one side that sealing washer 10 central point was kept away from to one of them valve plate pole 11 is equipped with square post, square post demountable installation has spanner 12, raft 14's both sides terminal surface links firmly open-ended stopper 17, the periphery side cover of stopper 17 is equipped with open-ended impact cover 15, the opening direction orientation in the stopper 17 is kept away from one side of raft 14, the opening direction orientation of impact cover 15 is close to one side of raft 14, stopper 17 inner wall and impact cover 15's inner wall link firmly spring 16, impact cover 15 is close to one side terminal surface of raft 14 and has linked firmly inflation piece 18, inflation piece 18 extends to one side of keeping away from sealing washer 10 central line, inflation piece 18 is located the position of impacting cover 15 and is the bulge, be equipped with the inflation chamber in the inflation piece 18, the tangent plane in inflation chamber divide into circular and bar two parts, wherein the bulge position of inflation piece 18 is located, through the setting up of inflation chamber, can be to its circular position extrusion, make the medium in its interior extruded bar position of inflation piece 19 and the inflation ring support the ring subassembly, the ring subassembly and the inflation ring component that the circumference that two inflation parts support the ring component, wherein be the inflation ring component that the inflation is set up for two.

When using, when closing the butterfly valve, can produce the water hammer phenomenon, make rivers impact and strike lid 15, make impact lid 15 overcome the elasticity of spring 16 and drive expansion block 18 and move to the direction that is close to raft 14, until expansion block 18 and raft 14 contact, then strike lid 15 and continue the motion at the impact of rivers, can extrude the bulge of expansion block 18, thereby make the medium in the circular portion of inflation chamber extruded and get into the bar part, can make the bar part inflation increase, further sealed to the butterfly valve, the effectual water hammer that prevents strikes makes liquid leak out, when ordinary closing, under hydraulic pressure, also can make expansion block 18 take place the inflation, thereby increase its leakproofness.

When the water flow of the water hammer phenomenon impacts the cover 15, the water flow can be buffered by the spring 16, so that the water hammer phenomenon can be effectively prevented from damaging parts of the butterfly valve.

It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Claims (7)

1. The utility model provides an avoid sanitary-grade butterfly valve of water hammer leakage, includes sealing washer (10) that the annular set up, its characterized in that: two through holes are formed in the outer peripheral side of the sealing ring (10), the through holes are symmetrically arranged by taking the center point of the sealing ring (10) as a center, and a switch assembly is arranged in the sealing ring (10);

switch module includes raft (14), the periphery side of raft (14) has linked firmly two valve plate rods (11), and two valve plate rods (11) run through the through-hole of sealing washer (10), one of them valve plate rod (11) are kept away from one side of sealing washer (10) central point is equipped with square post, square post demountable installation has spanner (12), the both sides terminal surface of raft (14) has linked firmly open-ended stopper (17), the periphery side cover of stopper (17) is equipped with open-ended and strikes lid (15), it is close to strike lid (15) one side terminal surface of raft (14) has linked firmly inflation piece (18), be equipped with the inflation chamber in inflation piece (18).

2. A sanitary butterfly valve for avoiding water hammer leakage according to claim 1, wherein: the both sides of sealing washer (10) be equipped with sealing washer (10) are valve body (13) that central symmetry set up, valve body (13) are kept away from one side of sealing washer (10) is equipped with the screw thread, valve body (13) are close to a side end face of sealing washer (10) is seted up flutedly, the recess with valve plate pole (11) correspond.

3. The sanitary butterfly valve for preventing water hammer leakage of claim 1, wherein: opening direction orientation in stopper (17) is kept away from one side of raft board (14), the opening direction orientation of assaulting lid (15) is close to one side of raft board (14), stopper (17) inner wall with assault and link firmly spring (16) between the inner wall of lid (15).

4. The sanitary butterfly valve for preventing water hammer leakage of claim 1, wherein: the expansion block (18) extends towards one side far away from the center line of the sealing ring (10), and the part of the expansion block (18) located on the impact cover (15) is a convex part.

5. The sanitary butterfly valve for preventing water hammer leakage of claim 4, wherein: the section of the expansion cavity is divided into a circular part and a strip-shaped part, wherein the circular part is positioned at the convex part of the expansion block (18).

6. The sanitary butterfly valve for avoiding water hammer leakage according to claim 5, wherein: be equipped with elastic support subassembly (19) in the circular portion of inflation chamber, elastic support subassembly (19) comprise two at least support rings and two track ring two parts, the support ring circumference distributes on the track ring.

7. The sanitary butterfly valve for preventing water hammer leakage of claim 1, wherein: the material of the sealing ring (10) and the expansion block (18) can be one of rubber and resin.

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