CN210068977U

CN210068977U - Three-eccentric hard sealing butterfly valve

Info

Publication number: CN210068977U
Application number: CN201920510053.6U
Authority: CN
Inventors: 张德胜; 吴海静
Original assignee: Yongjia Shenghai Valve Manufacturing Co Ltd
Current assignee: Zhejiang Shenghai Technology Co ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-02-14
Anticipated expiration: 2029-04-16

Abstract

The utility model discloses a three eccentric hard seal butterfly valves, which comprises a valve body, large-scale flange is all installed to the front and back end of valve body, the bottom is installed to the below of valve body and is sealed, the flange pad is installed to the up end that the bottom sealed, the inner wall that the bottom sealed is installed and is subtracted the power bearing, the valve rod pipe is installed to the top of valve body, the joint protective housing is installed to the top of valve rod pipe, the flange is all installed to the upper and lower terminal surface that connects the protective housing, transmission is installed to the top that connects the protective housing, manual carousel is installed to transmission's preceding terminal surface, the metal loop is installed to the inner wall of valve body, the dish is installed to one side of metal loop, rubber seal and metal seal are installed to the preceding terminal surface of dish, metal seal has two. The utility model discloses a soft or hard sealing washer reaches a dual leak protection, and the fine messenger dish of application through the bearing is being the in-process strength minimizing of motion and is reaching best effect.

Description

Three-eccentric hard sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a three eccentric hard seal butterfly valves.

Background

With the development of the world, for the pipelines in important industries such as general industrial industries of petroleum, chemical engineering, traffic, medicine and the like, valves are adopted, the function of the three-eccentric center hard seal butterfly valve is more obvious and the use is wide, in the known butterfly valve technology, the sealing form mostly adopts a sealing structure which is distinguished from hard seal and soft seal, the functions are different, the three-eccentric center metal hard seal butterfly valve has the advantages that a valve body and a valve seat are connected components, the surface layer of the valve seat seal is made of a heat-resistant and corrosion-resistant alloy material by surfacing welding and is directly arranged on the valve body, and the addition of an adjusting ring between a pressure plate and the valve seat is an ideal bidirectional hard seal mode, so that the three-eccentric center metal hard seal butterfly valve can replace a gate valve, a stop valve and a.

However, the existing three-eccentric center hard seal butterfly valve still has leakage and is inconvenient to disassemble; therefore, the existing requirements are not met, and a triple eccentric hard sealing butterfly valve is provided for the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three eccentric butterfly valves sealed firmly to what put forward in solving above-mentioned background art has revealed, and dismantles the problem of inconvenient etc..

In order to achieve the above object, the utility model provides a following technical scheme: a three-eccentric hard seal butterfly valve comprises a valve body, wherein large flanges are installed at the front end and the rear end of the valve body, a bottom seal is installed below the valve body, a flange pad is installed on the upper end face of the bottom seal, a force reducing bearing is installed on the inner wall of the bottom seal, a valve rod pipe is installed above the valve body, a joint protective shell is installed above the valve rod pipe, flanges are installed on the upper end face and the lower end face of the joint protective shell, a transmission device is installed above the joint protective shell, a manual rotary disc is installed on the front end face of the transmission device, a metal ring is installed on the inner wall of the valve body, a disc is installed on one side of the metal ring, a rubber sealing ring and a metal sealing ring are installed on the front end face of the disc, the number of the metal sealing rings is two, a valve rod fixing member is installed on one, the anti-fouling valve is characterized in that a valve rod connector is installed at the top end of the valve rod, a valve rod sleeve is installed on the outer side of the valve rod connector, bearings are installed above and below the valve rod, and anti-fouling sealing rings are installed on the end faces of the bearings.

Preferably, the valve body is connected with the metal ring and the large flange through argon arc welding.

Preferably, the terminal surface of rubber seal one side is provided with the hole, the preceding terminal surface of dish is provided with the screw hole, rubber seal passes through bolted connection with the dish, metal seal passes through argon arc welding with the dish and is connected.

Preferably, the valve rod fixing piece is connected with the disc through resistance butt welding.

Preferably, the antifouling sealing ring is provided with a clamping groove, and the antifouling sealing ring is connected with the bearing through the clamping groove.

Preferably, the inner side of the valve rod sleeve is provided with a square hole, and the valve rod sleeve is connected with the valve rod connector through the square hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model can effectively prevent the leakage problem by matching the rubber sealing ring and the combing sealing ring;

2. the bearing is sleeved by the antifouling seal ring, so that liquid or gas cannot leak out of the non-coated anticorrosion layer, and the service life of the part is prolonged;

3. the utility model discloses a subtract connection of power bearing and valve stem, the dish function of the messenger's bearing of maximize gets up more slim and graceful.

4. The utility model discloses a valve rod connects and the valve rod cover is connected, can be more effective how to add torsion, and two more effective parts of design of square firmly eat up tightly.

Drawings

FIG. 1 is an overall front view of a triple eccentric hard seal butterfly valve of the present invention;

FIG. 2 is an overall side sectional view of a triple eccentric hard seal butterfly valve according to the present invention;

fig. 3 is a schematic view of a partial structure of a three-eccentric center hard seal butterfly valve sealing ring of the present invention;

fig. 4 is the schematic view of the bearing protection structure of the triple eccentric hard seal butterfly valve of the present invention.

In the figure: 1. a manual turntable; 2. a transmission device; 3. a large flange; 4. a disc; 5. a joint protection housing; 6. a flange; 7. a valve stem tube; 8. a valve stem fitting; 9. a valve stem sleeve; 10. a valve stem; 11. a valve stem fixing member; 12. a flange pad; 13. sealing the bottom layer; 14. a metal ring; 15. a rubber seal ring; 16. a force reducing bearing; 17. a valve body; 18. an antifouling seal ring; 19. a bearing; 20. a metal seal ring.

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.

Referring to fig. 1-4, the present invention provides an embodiment: a three-eccentric hard seal butterfly valve comprises a valve body 17, wherein large flanges 3 are respectively installed at the front end and the rear end of the valve body 17, a bottom seal 13 is installed below the valve body 17, a flange gasket 12 is installed on the upper end face of the bottom seal 13, the sealing function is well realized, the erosion of external factors is prevented, a force reducing bearing 16 is installed on the inner wall of the bottom seal 13, a valve rod pipe 7 is installed above the valve body 17, a joint protective shell 5 is installed above the valve rod pipe 7, flanges 6 are installed on the upper end face and the lower end face of the joint protective shell 5, a transmission device 2 is installed above the joint protective shell 5, the electric drive and the starting can be replaced, the disassembly and the maintenance are convenient, a manual rotary disc 1 is installed on the front end face of the transmission device 2, a metal ring 14 is installed on the inner wall of the valve body 17, a disc 4 is installed on one, the metal sealing rings 20 are two, the valve rod fixing piece 11 is installed on one side of the disc 4, the valve rod 10 is installed on the outer wall of the valve rod fixing piece 11, the valve rod connector 8 is installed on the top end of the valve rod 10, the valve rod sleeve 9 is installed on the outer side of the valve rod connector 8, the bearings 19 are installed above and below the valve rod 10, and the antifouling sealing rings 18 are installed on the end faces of the bearings 19.

Further, the valve body 17, the metal ring 14 and the large flange 3 are connected through argon arc welding, so that the sealing performance is greatly improved, and the possibility of leakage is reduced.

Further, the terminal surface of rubber seal 15 one side sets up porosely, and the preceding terminal surface of dish 4 is provided with the screw hole, and rubber seal 15 passes through bolted connection with dish 4, and metal seal 20 welds with dish 4 through argon arc and is connected, and the sealing washer of dual leak protection makes the possibility of revealing fall to the minimum.

Further, the valve rod fixing member 11 and the disk 4 are connected by resistance butt welding, so that they become a whole material, and the firmness is high.

Further, antifouling sealing washer 18 is provided with the draw-in groove, and antifouling sealing washer 18 passes through the draw-in groove with bearing 19 to be connected, fine protection the part, prevent to receive its other factors and damage, increase its life.

Further, the inboard of valve rod cover 9 is provided with the quad slit, and valve rod cover 9 passes through the quad slit with valve rod joint 8 and is connected, and the maximize makes the even distribution of power, and firmly eats tightly between the part, still can conveniently dismantle.

The working principle is as follows: when the manual rotary disk 1 is rotated, the valve rod 10 drives the disk 4 to start rotating through the transmission of the transmission device 2 and the distribution of force, so as to open a valve, the rubber sealing ring 15 cannot be deformed by the metal ring 14, meanwhile, the valve rod 10 drives the bearing 19 below and the force reducing bearing 16 below, the rotation is faster through the distribution of torsion, the anti-pollution sealing ring 18 can firmly protect the bearing 19, so that the anti-pollution sealing ring is not corroded by liquid and gas flowing inside the valve body 17, the manual rotary disk 1 needs to be stored, even if the gas is in a flowing state, the surface of the disk 4 can be easily attached to the metal ring 20 and the rubber sealing ring 15 tightly, and the rubber sealing ring 15 can be restored to the original shape due to the memory when the manual rotary disk 1 is rotated again, and the surface of the disk 4 is easily attached to the metal sealing ring 20 and the rubber sealing ring 15 due to the matching of the shaft and the valve rod 10, the liquid and the gas are difficult to circulate, and the leakage phenomenon can not occur.

Claims

1. The utility model provides a three eccentric butterfly valves sealed firmly, includes valve body (17), its characterized in that: the large-scale flange (3) is installed to the front and back end of valve body (17), bottom seal (13) is installed to the below of valve body (17), flange pad (12) are installed to the up end that bottom seal (13) was sealed, the inner wall that bottom seal (13) is installed and is subtracted power bearing (16), valve rod pipe (7) are installed to the top of valve body (17), connect protective housing (5) is installed to the top of valve rod pipe (7), flange (6) are all installed to the upper and lower terminal surface that connects protective housing (5), transmission (2) are installed to the top that connects protective housing (5), manual carousel (1) is installed to the preceding terminal surface of transmission (2), metal ring (14) is installed to the inner wall of valve body (17), dish (4) are installed to one side of metal ring (14), rubber seal (15) and metal seal (20) are installed to the preceding terminal surface of dish (4), metal seal circle (20) have two, valve rod mounting (11) are installed to one side of dish (4), valve rod (10) are installed to the outer wall of valve rod mounting (11), valve rod joint (8) are installed on the top of valve rod (10), valve rod cover (9) are installed in the outside of valve rod joint (8), bearing (19) are all installed to the upper and lower below of valve rod (10), antifouling sealing washer (18) are installed to the terminal surface of bearing (19).

2. A triple offset hard seal butterfly valve according to claim 1, wherein: the valve body (17) is connected with the metal ring (14) and the large flange (3) through argon arc welding.

3. A triple offset hard seal butterfly valve according to claim 1, wherein: the terminal surface of rubber seal (15) one side is provided with porosely, the preceding terminal surface of dish (4) is provided with the screw hole, rubber seal (15) pass through bolted connection with dish (4), metal seal (20) are connected through argon arc welding with dish (4).

4. A triple offset hard seal butterfly valve according to claim 1, wherein: the valve rod fixing piece (11) is connected with the disc (4) through resistance butt welding.

5. A triple offset hard seal butterfly valve according to claim 1, wherein: the antifouling sealing ring (18) is provided with a clamping groove, and the antifouling sealing ring (18) is connected with the bearing (19) through the clamping groove.

6. A triple offset hard seal butterfly valve according to claim 1, wherein: the inner side of the valve rod sleeve (9) is provided with a square hole, and the valve rod sleeve (9) is connected with the valve rod connector (8) through the square hole.