CN213954440U

CN213954440U - Butterfly check valve with noise reduction structure

Info

Publication number: CN213954440U
Application number: CN202022425107.4U
Authority: CN
Inventors: 裴叶青
Original assignee: Tianjin Ots Valve Manfacturing Co ltd
Current assignee: Tianjin Ots Valve Manfacturing Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-08-13
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a butterfly check valve with amortization structure, including valve body and plastic covering, the inside of valve body is provided with the chamber way, and the one end that the chamber was said is provided with first flange, the other end that the chamber was said is provided with the second flange, and the outward flange of second flange and first flange is provided with the screw, the inward flange of second flange and first flange is provided with a sealing washer, the outside parcel all around of valve body has the plastic covering, the inside that the chamber was said is provided with the hinge bar, and the upper end of hinge bar is provided with fixed valve clack, the lower extreme of hinge bar is provided with the valve clack that opens and shuts. This butterfly check valve is provided with the plastic covering, because the valve body is the metal material, and the metal material produces great friction noise easily when contacting with the fluid of fast circulation, therefore the effect of plastic covering lies in can wrapping up the encapsulation to the outer wall of valve body to the effectual friction noise that has reduced between fluid and the metal outwards diffuses.

Description

Butterfly check valve with noise reduction structure

Technical Field

The utility model relates to a butterfly check valve technical field specifically is a butterfly check valve with amortization structure.

Background

The butterfly check valve is a valve that automatically opens and closes a valve flap depending on the flow of a medium itself to prevent the backflow of the medium, and is also called a check valve, a reverse flow valve, and a back pressure valve. The check valve is an automatic valve and mainly used for preventing medium from flowing backwards, preventing the pump and a driving motor from reversing and discharging container medium.

The butterfly check valves generally used in the market at present are similar in basic structure, although most of the butterfly check valves can meet requirements in use, places needing to be perfected still appear, for example, most of the check valves lack effective noise reduction measures in control of noise generated when fluid passes through, and meanwhile, some check valves with noise reduction functions are complex in structure, so that maintenance difficulty is increased, and therefore, a butterfly check valve with a noise reduction structure is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a butterfly check valve with amortization structure to solve the butterfly check valve of the present general use on the market that proposes in the above-mentioned background art, its basic structure is similar roughly, though can satisfy the requirement mostly on using, but still can appear some places that need be perfect, for example most check valves it lacks the effectual measure of making an uproar of falling in the control of the noise that produces when the fluid passes through, some check valves that have the function of making an uproar of falling simultaneously are because the structure is comparatively complicated, thereby also increased the problem of the maintenance degree of difficulty.

In order to achieve the above object, the utility model provides a following technical scheme: a butterfly check valve with a noise reduction structure comprises a valve body and a plastic cladding, wherein a cavity is arranged inside the valve body, and one end of the cavity is provided with a first flange, the other end of the cavity is provided with a second flange, and the outer edges of the second flange and the first flange are provided with screw holes, the inner edges of the second flange and the first flange are provided with a first sealing ring, the periphery of the outer part of the valve body is wrapped with a plastic cladding, the inner part of the cavity is provided with a hinge rod, and the upper end of the hinged rod is provided with a fixed valve clack, the lower end of the hinged rod is provided with an opening and closing valve clack, and one side of the edge of the opening and closing valve clack is provided with a check ring, one side of the check ring is provided with a second sealing ring, one side of the hinged rod is provided with a valve rod, and a spring is arranged on the periphery of the outer side of the valve rod, a hole ring is arranged on one side of the outer portion of the valve body, and a sealing cover is arranged at one end of the hole ring.

Preferably, the outer wall of the valve body is attached to the inner wall of the plastic cladding, and the cavities inside the valve body are distributed in a cylindrical shape.

Preferably, a sealing washer laminates with first flange and second flange each other respectively, and the screw is along the outward flange evenly distributed of first flange and second flange.

Preferably, No. two sealing rings are respectively laminated with retaining ring and the valve clack that opens and shuts, and No. two sealing rings and retaining ring are half circular distribution.

Preferably, the area size of the opening and closing valve clack is larger than that of the fixed valve clack, and the opening and closing valve clack is movably connected with the fixed valve clack through a hinge rod.

Preferably, the number of the springs on the outer side of the valve rod is two, and the inner wall and the outer wall of the hole ring are respectively attached to the valve rod and the sealing cover.

Compared with the prior art, the beneficial effects of the utility model are that: this butterfly check valve is provided with the plastic covering, the outer wall of valve body and the inner wall of plastic covering laminate each other, because the valve body is the metal material, and the metal material produces great friction noise easily when contacting with the fluid of quick circulation, consequently, the effect of plastic covering lies in can wrapping up the encapsulation to the outer wall of valve body, thereby the effectual friction noise that has reduced between fluid and the metal outwards diffuses, and the main effect of chamber way lies in the cooperation valve clack that opens and shuts, and make the fluid circulate smoothly, the valve body then mainly plays the effect of fixing spare parts such as hinge bar and valve rod simultaneously.

A sealing washer laminates with first flange and second flange respectively each other, first flange and second flange mainly play link up fixed effect to going into between business turn over pipeline and the valve body, and because the phenomenon that fluid can take place to leak when circulating and ooze and the noise diffusion, consequently the main action of a sealing washer lies in can sealing up the linking gap department of first flange and second flange, thereby the effectual phenomenon of having avoided fluid to ooze and the noise diffusion, and the screw then mainly plays inserting of cooperation threaded rod, and carry out the effect of thread tightening between first flange and second flange and the pipeline.

No. two sealing washers laminate with the retaining ring respectively with the valve clack that opens and shuts, and the main effect of retaining ring lies in can carrying out spacing fixed to the return of valve clack that opens and shuts, and because the valve clack that opens and shuts can have the gap between its edge when the return and the inner wall of valve body, and the existence in gap can lead to the slow streaming of fluid, therefore the effect of No. two sealing washers lies in can carrying out effectual sealing to the edge gap of valve clack that opens and shuts to the availability factor of check valve has been ensured.

Drawings

FIG. 1 is a schematic view of the external three-dimensional structure of the present invention;

FIG. 2 is a schematic side view of the internal structure of the present invention;

fig. 3 is a schematic view of the front view structure of the valve rod of the present invention.

In the figure: 1. a valve body; 2. a lumen; 3. a first flange; 4. a second flange; 5. a first sealing ring; 6. a screw hole; 7. a plastic cladding; 8. a hinged lever; 9. fixing the valve clack; 10. the valve clack is opened and closed; 11. a retainer ring; 12. a second sealing ring; 13. a valve stem; 14. a spring; 15. a hole ring; 16. and (7) sealing the cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a butterfly check valve with a noise reduction structure comprises a valve body 1, a cavity channel 2, a first flange 3, a second flange 4, a first sealing ring 5, a screw hole 6, a plastic cladding 7, a hinge rod 8, a fixed valve clack 9, an opening and closing valve clack 10, a check ring 11, a second sealing ring 12, a valve rod 13, a spring 14, a hole ring 15 and a sealing cover 16, wherein the cavity channel 2 is arranged inside the valve body 1, the first flange 3 is arranged at one end of the cavity channel 2, the second flange 4 is arranged at the other end of the cavity channel 2, the screw hole 6 is arranged at the outer edges of the second flange 4 and the first flange 3, the first sealing ring 5 is arranged at the inner edges of the second flange 4 and the first flange 3, the plastic cladding 7 wraps the outer periphery of the valve body 1, the cavity channel 2 is internally provided with the hinge rod 8, the upper end of the hinge rod 8 is provided with the fixed valve clack 9, the lower end of the hinge rod 8 is provided with the opening and closing valve clack 10, a check ring 11 is arranged on one side of the edge of the opening and closing valve clack 10, a second sealing ring 12 is arranged on one side of the check ring 11, a valve rod 13 is arranged on one side of the hinged rod 8, a spring 14 is arranged on the periphery of the outer side of the valve rod 13, a hole ring 15 is arranged on one side of the outer portion of the valve body 1, and a sealing cover 16 is arranged at one end of the hole ring 15;

the outer wall of the valve body 1 is mutually attached to the inner wall of the plastic cladding 7, and the cavities 2 in the valve body 1 are distributed in a cylindrical shape, because the valve body 1 is made of metal materials which easily generate large friction noise when being contacted with fast flowing fluid, the plastic cladding 7 has the function of wrapping and packaging the outer wall of the valve body 1, the outward diffusion of the friction noise between the fluid and the metal is effectively reduced, the cavities 2 mainly have the function of matching with the opening and closing valve clacks 10 and enabling the fluid to smoothly flow, and meanwhile, the valve body 1 mainly plays a role of fixing parts such as the hinge rod 8, the valve rod 13 and the like;

the first sealing ring 5 is respectively attached to the first flange 3 and the second flange 4, screw holes 6 are uniformly distributed along the outer edges of the first flange 3 and the second flange 4, the first flange 3 and the second flange 4 mainly play a role in connection and fixation between an inlet and outlet pipeline and the valve body 1, and the phenomenon of leakage and seepage and noise diffusion can occur when fluid circulates, so that the first sealing ring 5 mainly plays a role in sealing a connection gap between the first flange 3 and the second flange 4, the phenomenon of fluid seepage and noise diffusion is effectively avoided, and the screw holes 6 mainly play a role in insertion of a matching threaded rod and in threaded fixation between the first flange 3 and the second flange 4 and between pipelines;

the second sealing ring 12 is respectively attached to the check ring 11 and the opening and closing valve clack 10, the second sealing ring 12 and the check ring 11 are distributed in a semicircular shape, the check ring 11 mainly has the main function of limiting and fixing the return of the opening and closing valve clack 10, and a gap can exist between the edge of the opening and closing valve clack 10 and the inner wall of the valve body 1 when the opening and closing valve clack 10 returns, and fluid can slowly flow in series due to the existence of the gap, so that the second sealing ring 12 has the function of effectively sealing the gap at the edge of the opening and closing valve clack 10, and the service efficiency of the check valve is ensured;

the area size of the opening and closing valve clack 10 is larger than that of the fixed valve clack 9, the opening and closing valve clack 10 is movably connected with the fixed valve clack 9 through the hinge rod 8, and the check valve does not need to completely open the cavity channel 2 during operation, so that the fixed valve clack 9 mainly seals the upper part of the cavity channel 2, and the opening and closing valve clack 10 can be freely opened and closed under the movable connection of the hinge rod 8, so that fluid can smoothly circulate and be blocked;

spring 14 in the valve rod 13 outside is provided with two, and the inner wall and the outer wall of eyelet 15 laminate with valve rod 13 and closing cap 16 respectively mutually, valve rod 13 mainly plays and fixes spring 14, and spring 14's effect lies in cooperation hinge bar 8, and form elasticity swing joint between valve clack 10 and the hinge bar 8 to opening and shutting, thereby make valve clack 10 open and shut can and No. two sealing washer 12 between laminating inseparabler when the return, and eyelet 15's effect lies in conveniently carrying out the dismouting operation to valve rod 13, and carry out spacing fixed to valve rod 13 under closing cap 16's fixed, thereby avoided valve rod 13 slippage to leave eyelet 15.

The working principle is as follows: for the butterfly check valve with the noise reduction structure, firstly, the first flange 3 and the second flange 4 at two ends of the valve body 1 are respectively butted with the section of a fluid pipeline, and then are fastened by a screw rod in a screw hole 6 in a threaded manner, wherein a sealing ring 5 at the edge of the first flange 3 and the second flange 4 has the function of sealing the joint gap of the first flange 3 and the second flange 4, so that the phenomena of fluid seepage and noise diffusion are effectively avoided, after the joint is completed, when fluid enters the cavity channel 2 from the first flange 3, the opening and closing valve flap 10 at the lower end of the hinged rod 8 can be naturally pushed open, the fixed valve flap 9 at the upper end of the hinged rod 8 is always kept in a fixed state, when the opening and closing valve flap 10 is pushed open, the fluid can flow out from the cavity channel 2 through the second flange 4, and then when the fluid stops being conveyed, the opening and closing valve flap 10 can complete the return under the elastic pushing of the spring 14, until the edge of the opening and closing valve clack 10 is mutually attached to a second sealing ring 12 at one side of the retainer ring 11, here, the valve rod 13 mainly serves to fix the spring 14, and the spring 14 functions to engage the hinge rod 8, and to form a resilient movable connection between the opening/closing flap 10 and the hinge rod 8, so that the opening and closing valve clack 10 can be tightly attached to the second sealing ring 12 when being returned, the hole ring 15 is used for facilitating the disassembly and assembly operation of the valve rod 13 and limiting and fixing the valve rod 13 under the fixation of the sealing cover 16, thereby preventing the valve rod 13 from slipping off the hole ring 15, and finally, because the valve body 1 is made of metal, and the metal material is easy to generate larger friction noise when contacting with the fast flowing fluid, therefore, the plastic cladding 7 is used for wrapping and packaging the outer wall of the valve body 1, so that the outward diffusion of friction noise between fluid and metal is effectively reduced.

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. The utility model provides a butterfly check valve with amortization structure, includes valve body (1) and plastic cladding (7), its characterized in that: the valve comprises a valve body (1), a cavity channel (2) is arranged in the valve body (1), a first flange (3) is arranged at one end of the cavity channel (2), a second flange (4) is arranged at the other end of the cavity channel (2), screw holes (6) are formed in the outer edges of the second flange (4) and the first flange (3), a first sealing ring (5) is arranged at the inner edge of the second flange (4) and the inner edge of the first flange (3), a plastic cladding (7) is wrapped around the outer portion of the valve body (1), a hinge rod (8) is arranged in the cavity channel (2), a fixed valve flap (9) is arranged at the upper end of the hinge rod (8), an opening and closing valve flap (10) is arranged at the lower end of the hinge rod (8), a retaining ring (11) is arranged on one side of the edge of the opening and closing valve flap (10), a second sealing ring (12) is arranged on one side of the retaining ring (11), a valve, and a spring (14) is arranged on the periphery of the outer side of the valve rod (13), a hole ring (15) is arranged on one side of the outer portion of the valve body (1), and a sealing cover (16) is arranged at one end of the hole ring (15).

2. A butterfly check valve with a sound attenuating structure, as claimed in claim 1, wherein: the outer wall of the valve body (1) is attached to the inner wall of the plastic cladding (7), and the cavities (2) in the valve body (1) are distributed in a cylindrical mode.

3. A butterfly check valve with a sound attenuating structure, as claimed in claim 1, wherein: a sealing washer (5) laminates with first flange (3) and second flange (4) each other respectively, and screw (6) along the outward flange evenly distributed of first flange (3) and second flange (4).

4. A butterfly check valve with a sound attenuating structure, as claimed in claim 1, wherein: no. two sealing washer (12) laminate mutually with retaining ring (11) and switching valve clack (10) respectively, and No. two sealing washer (12) and retaining ring (11) are the semicircle form and distribute.

5. A butterfly check valve with a sound attenuating structure, as claimed in claim 1, wherein: the area size of the opening and closing valve clack (10) is larger than that of the fixed valve clack (9), and the opening and closing valve clack (10) is movably connected with the fixed valve clack (9) through a hinge rod (8).

6. A butterfly check valve with a sound attenuating structure, as claimed in claim 1, wherein: the two springs (14) on the outer side of the valve rod (13) are arranged, and the inner wall and the outer wall of the hole ring (15) are respectively attached to the valve rod (13) and the sealing cover (16).