CN210003831U

CN210003831U - butterfly valve with filtering function

Info

Publication number: CN210003831U
Application number: CN201920274749.3U
Authority: CN
Inventors: 于亚平; 鞠昌平; 王芳
Original assignee: NANTONG LIPEI FLUID VALVE CO Ltd
Current assignee: NANTONG LIPEI FLUID VALVE CO Ltd
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-01-31
Anticipated expiration: 2029-03-05

Abstract

The utility model discloses an butterfly valve with filtering capability, including valve body, valve rod, rubber bush, butterfly valve clack and compound filter screen, it has rubber bush to inlay on the inside wall of valve body, and the inside central point department of putting of rubber bush is equipped with the butterfly valve clack, all install compound filter screen on the rubber bush inside wall of butterfly valve clack both sides, compound filter screen keeps away from all to be fixed with on the rubber bush inside wall of butterfly valve clack side and has had the restricted flow board, the central point department of putting at valve body top is equipped with the disk seat, and the bottom of disk seat is linked together with the inside of valve body, the inside central point department of putting of disk seat is equipped with the valve rod, and the top of valve rod extends to the top of disk seat, and the bottom of valve rod runs through disk seat, rubber bush, butterfly valve clack in proper order and articulates with the inboard wall of valve body.

Description

butterfly valve with filtering function

Technical Field

The utility model relates to a butterfly valve technical field specifically is butterfly valves with filtering capability.

Background

The opening and closing parts of the butterfly valve, namely the flap valve, are disc-shaped butterfly plates, and the flap valve can rotate around the axis of the flap valve in a valve body so as to achieve the purpose of opening and closing or adjusting, wherein the flap valve is adjusting valves with simple structures, and is usually used as a control switch of low-pressure pipeline media, is widely applied to control the flow of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

However, the existing butterfly valve still has the problem of in the actual use process, and the specific problems include the following points:

1. the existing butterfly valve does not have a filtering function, and filter screens are usually required to be arranged in front of and behind the butterfly valve, but due to the action of hydraulic pressure, the filter screens are easy to deviate, so that the effective filtering function is difficult to achieve;

2. the butterfly valve is fixed and installed by adopting an external flange or a bracket, but because a gap still exists between the flange and the pipeline, a water seal structure fixed by is often needed to be arranged externally, so that the actual assembly efficiency is reduced;

3. the existing butterfly valve is easy to be damaged or even leaked due to the lack of an effective protection and sealing mechanism, and the effective service life of the existing butterfly valve is often difficult to reach an ideal level.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide kinds of butterfly valves with filtering capability to solve among the above-mentioned background art the lack filtering capability of providing the device, actual assembly efficiency is lower, effective life lacks the guarantee problem.

butterfly valve with filtering capability, including valve body, valve rod, rubber bush, butterfly valve clack and compound filter screen, it has rubber bush to inlay on the inside wall of valve body, and the inside central point department of putting of rubber bush is equipped with the butterfly valve clack, all install compound filter screen on the rubber bush inside wall of butterfly valve clack both sides, all be fixed with on the compound filter screen keeps away from the rubber bush inside wall of butterfly valve clack side and have a restricted flow board, the central point department of putting at valve body top is equipped with the disk seat, and the bottom of disk seat is linked together with the inside of valve body, the inside central point department of putting of disk seat is equipped with the valve rod, and the top of valve rod extends to the top of disk seat, and the bottom of valve rod runs through disk seat, rubber bush, butterfly valve clack in proper order and is articulated.

Preferably, all be equipped with mounting flange on two lateral walls of valve body, the inside of mounting flange all is equipped with six screw thread via holes, and the contained angle between the adjacent screw thread via hole all is sixty degrees.

Preferably, the sides of the mounting flanges far away from the valve seat are provided with butt joint ports, and the inner diameter of each butt joint port is equal to that of the rubber bushing.

Preferably, the inside of valve body is equipped with the carbon steel main part, and the lateral wall of carbon steel main part is gone up to electroplate has the anticorrosion nickel layer, and the inside wall of carbon steel main part coats and is stamped the polymer protective layer simultaneously, and the inside wall of polymer protective layer and the lateral wall of rubber bush contact each other.

Preferably, the inside central point department of putting of current-limiting plate is equipped with the flow equalizing hole, and the internal diameter in flow equalizing hole increases step by step, and the current-limiting plate outside of flow equalizing hole is inside to be equipped with eight groups of overflow holes simultaneously, and the contained angle between the adjacent overflow hole all is forty-five degrees.

Preferably, the sealing rings are installed at two ends of the interior of the valve seat, and the inner side walls of the sealing rings are in contact with the outer side wall of the valve rod.

Compared with the prior art, the beneficial effects of the utility model are that: the butterfly valve with the filtering function not only relieves the internal damage of the butterfly valve, improves the assembly efficiency of the butterfly valve, but also prolongs the effective service life of the butterfly valve;

1. the butterfly valve clack, the composite filter screen and the flow limiting plate are arranged inside the rubber bushing, and the flow equalizing hole and the overflow hole are arranged inside the flow limiting plate, so that the functions of pressure regulation and filtration inside the butterfly valve are realized, and the internal damage of the butterfly valve is relieved;

2. the mounting flanges are arranged on the two outer side walls of the valve body, the threaded through holes are formed in the mounting flanges, and the butt joint ports are formed in the side of the mounting flanges, so that the butterfly valve is convenient to mount and position, and the assembly efficiency of the butterfly valve is improved;

3. establish the carbon steel main part through the inside at the valve body, electroplate the anticorrosion nickel layer on the lateral wall of carbon steel main part, cover the polymer protective layer on the inside wall of carbon steel main part to through inlaying the rubber bush on the inside wall of valve body, the internally mounted sealing washer of disk seat has realized the multiple protection of butterfly valve, sealed function, thereby has prolonged the life of butterfly valve.

Drawings

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

fig. 2 is a schematic view of the structure of the present invention;

FIG. 3 is a schematic sectional side view of the present invention;

fig. 4 is a schematic view of the sectional structure of the valve body of the present invention.

In the figure: 1. a valve body; 2. a valve stem; 3. a rubber bushing; 4. installing a flange; 5. a threaded via hole; 6. A docking port; 7. a restrictor plate; 8. a valve seat; 9. a seal ring; 10. a butterfly valve flap; 11. compounding a filter screen; 12. an overflow aperture; 13. a flow equalizing hole; 14. a carbon steel body; 15. a polymer protective layer; 16. a corrosion-resistant nickel layer.

Detailed Description

The technical solution 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 , but not all embodiments.

Please refer to fig. 1-4, the present invention provides embodiments of a butterfly valve with filtering function, including a valve body 1, a valve rod 2, a rubber bushing 3, a butterfly valve flap 10 and a composite filter screen 11, wherein two outer sidewalls of the valve body 1 are both provided with mounting flanges 4, the mounting flanges 4 are both provided with six sets of threaded via holes 5, and the included angles between adjacent threaded via holes 5 are sixty degrees, which is convenient for direct mounting, sides of the mounting flanges 4 far away from the valve seat 8 are both provided with a butt port 6, and the inner diameters of the butt port 6 are equal to the inner diameter of the rubber bushing 3, for auxiliary positioning, connection, the valve body 1 is provided with a carbon steel main body 14, the outer sidewall of the carbon steel main body 14 is plated with an anti-corrosion nickel layer 16, meanwhile, the inner sidewall of the carbon steel main body 14 is covered with a polymer protective layer 15, and the inner sidewall of the polymer protective layer 15 is in contact with the outer sidewall of the rubber bushing 3, for forming internal and external dual protection for forming the valve body 1 itself, the valve body 1, the internal and external dual protection, the inner sidewall of the valve body 1 is inlaid with a rubber bushing 3, the inner sidewall of the valve seat 3 is inlaid with a rubber bushing 3, the inner sidewall of a central sealing ring 13, the valve seat is provided with a central sealing ring, the central sealing ring 13, the central sealing ring is provided with a central sealing ring for reducing the central sealing ring, the central sealing ring 13, the central sealing ring is provided with a central sealing ring for reducing the central sealing ring, the central sealing ring of the central sealing ring 13, the central sealing ring for reducing the central sealing ring, the central sealing ring of the central sealing.

The working principle is as follows: when the valve is used, the two ends of the valve body 1 are nested with corresponding pipelines through the butt joint port 6, then the valve body 1 is installed and fixed through the thread through hole 5 in the installation flange 4, in the later use process, when the valve rod 2 is rotated to open the butterfly valve flap 10 by ninety degrees, water flow sequentially passes through the flow limiting plate 7 and the composite filter screen 11, when the water flow passes through the flow limiting plate 7, turbulent water flow is automatically limited under the dual action of the flow equalizing hole 13 and the overflow hole 12, the phenomenon that the butterfly valve flap 10 is damaged due to overlarge hydraulic pressure difference at the two ends is avoided, the composite filter screen 11 effectively intercepts large-particle impurities in the water body, the large-particle impurities directly enter the rear part to damage precision equipment is avoided, in addition, the rubber bushing 3 can effectively resist deformation caused by hydraulic pressure and has good recovery performance, and the high polymer protective layer 15 on the inner side of the carbon steel main body 14 can effectively isolate the temperature difference in the valve body, the anti-corrosion nickel layer 16 on the outer side of the carbon steel main body 14 is used for external anti-corrosion, so that the carbon steel main body 14 is prevented from being rusted, and the whole work of the butterfly valve with the filtering function is finally completed.

It will thus be seen that the present invention is illustrative and not restrictive, and the scope of the invention is defined by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

The butterfly valve with the filtering function comprises a valve body (1), a valve rod (2), a rubber bushing (3), a butterfly valve clack (10) and a composite filter screen (11), and is characterized in that the rubber bushing (3) is embedded in the inner side wall of the valve body (1), the butterfly valve clack (10) is arranged in the center of the inside of the rubber bushing (3), the composite filter screen (11) is mounted on the inner side walls of the rubber bushings (3) on two sides of the butterfly valve clack (10), the composite filter screen (11) is fixed on the inner side wall of the rubber bushing (3) far away from the side of the butterfly valve clack (10) , a flow limiting plate (7) is fixed on the inner side wall of the rubber bushing (3), a valve seat (8) is arranged in the center of the top of the valve body (1), the bottom of the valve seat (8) is communicated with the inside of the valve body (1), the valve rod (2) is arranged in the center of the inside of the valve seat (8), the top of the valve rod (2) extends to the top of the valve seat (8), and.
2. The butterfly valve with filtering function of claim 1, wherein the two outer side walls of the valve body (1) are both provided with mounting flanges (4), the insides of the mounting flanges (4) are both provided with six sets of threaded through holes (5), and the included angles between adjacent threaded through holes (5) are sixty degrees.
3. butterfly valve with filter function according to claim 2, wherein the sides of the mounting flange (4) away from the valve seat (8) are provided with docking ports (6), and the inner diameter of the docking ports (6) is equal to the inner diameter of the rubber bushing (3).
4. kinds of butterfly valve with filtering function, according to claim 1, characterized in that the valve body (1) is provided with a carbon steel body (14) inside, the outer side wall of the carbon steel body (14) is plated with an anti-corrosion nickel layer (16), and the inner side wall of the carbon steel body (14) is covered with a polymer protective layer (15), and the inner side wall of the polymer protective layer (15) and the outer side wall of the rubber bushing (3) are in contact with each other.
5. The kind of butterfly valves with filtering capability of claim 1, wherein the flow-limiting plate (7) has a flow-equalizing hole (13) at its center, and the inner diameter of the flow-equalizing hole (13) increases gradually, while the flow-limiting plate (7) outside the flow-equalizing hole (13) has eight groups of overflow holes (12), and the included angles between adjacent overflow holes (12) are forty-five degrees.
6. butterfly valve with filter function, according to claim 1, characterized in that the sealing ring (9) is installed at both ends of the valve seat (8), and the inner side wall of the sealing ring (9) contacts with the outer side wall of the valve rod (2).