CN210890161U

CN210890161U - Multi-level hard seal butterfly valve

Info

Publication number: CN210890161U
Application number: CN201921644887.2U
Authority: CN
Inventors: 李志坚; 李志远
Original assignee: Yongjia Shanglun Pump Manufacturing Co ltd
Current assignee: Yongjia Shanglun Pump Manufacturing Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-30
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a butterfly valve technical field specifically is a multi-level hard seal butterfly valve, including the butterfly valve main part, the both ends of butterfly piece are provided with metal gasket, metal gasket's the outside is provided with the sealing washer, metal gasket's inside is provided with the threaded rod, the outside of valve rod is provided with the seal cover, the top of seal cover is provided with first dead lever, the second dead lever is installed in the outside of first dead lever. The device reasonable in design, the inside non-slip cover that sets up in the seal cover can take over the leakproofness that the butterfly valve main part was guaranteed to the sealing washer, and the setting of first dead lever and second dead lever is convenient for change the seal cover from built-in groove is rotatory down to convenient operation, the effectual hardness that has strengthened the sealing washer of metal gasket that sets up in the sealing washer, thereby strengthened life, effectively prevented the possibility of leaking.

Description

Multi-level hard seal butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a multi-level butterfly valve sealed firmly.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

The Chinese patent discloses a multi-level hard seal butterfly valve (No. CN 206268467U), and the sealing structure that this patent technique can solve case and valve body generally adopts the hard seal of single-level, and the case leads to sealed wearing and tearing easily at rotatory in-process, leads to leaking, but the butterfly valve produces a certain amount of wearing and tearing at rotatory in-process and leads to subsequent poor back of leakproofness, need change but the installation is dismantled inconveniently, and consumes greatly, damages and needs to produce immediately when the rubber circle in the video disc outside and changes. Accordingly, one skilled in the art provides a multi-level hard seal butterfly valve to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-level butterfly valve sealed firmly to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a multi-level butterfly valve sealed firmly, includes the butterfly valve main part, the inside of butterfly valve main part is provided with the valve rod, the butterfly piece is installed in the outside of valve rod, the both ends of butterfly piece are provided with the metal gasket, the outside of metal gasket is provided with the sealing washer, the inside of metal gasket is provided with the threaded rod, the outside of valve rod is provided with the seal cover, the top of seal cover is provided with first dead lever, the second dead lever is installed in the outside of first dead lever.

As a further aspect of the present invention: the butterfly sheet welded connection valve rod, the butterfly sheet passes through valve rod swivelling joint butterfly valve main part, the external diameter of metal gasket and the internal diameter looks adaptation of butterfly valve main part, the metal gasket is provided with two altogether, and the symmetry is arranged in the both ends of butterfly sheet.

As a further aspect of the present invention: the sealing ring is provided with two, the sealing ring is the component of a rubber material, the outside of metal gasket is arranged in respectively to the sealing ring, metal gasket is connected in the sealing ring veneer.

As a further aspect of the present invention: the threaded rod is provided with six altogether, respectively with metal shim arranges metal shim's inside in as centre of a circle array, metal shim passes through threaded rod threaded connection butterfly piece, the outside of threaded rod is provided with the nut, the internal diameter of nut and the external diameter looks adaptation of threaded rod, threaded rod threaded connection nut.

As a further aspect of the present invention: the outer side of the sealing sleeve is provided with an internal groove which is fixedly connected with a butterfly valve main body, the inner diameter of the internal groove is matched with the outer diameter of the sealing sleeve, a thread block is installed on the outer side of the sealing sleeve, and the thread block is connected with the sealing sleeve in a welded mode.

As a further aspect of the present invention: the butterfly valve is characterized in that a thread groove is formed in the position, corresponding to the built-in groove, of the thread block, the thread block is in threaded connection with the thread groove, the sealing sleeve is in threaded connection with the butterfly valve main body through the thread block, and an internal anti-skidding sleeve is mounted inside the sealing sleeve.

As a further aspect of the present invention: the anti-skidding sleeve is characterized in that the inner diameter of the anti-skidding sleeve is matched with the outer diameter of the valve rod, the anti-skidding sleeve is a component made of rubber, the anti-skidding sleeve is connected with the sealing sleeve in a gluing mode, the first fixing rod and the second fixing rod are symmetrically arranged on two sides of the sealing sleeve, the first fixing rod and the second fixing rod are components made of materials with the same shape, and the first fixing rod and the second fixing rod are connected with the sealing sleeve in a welding mode.

Compared with the prior art, the beneficial effects of the utility model are that: the device reasonable in design, the operation of being convenient for, the inside non-slip cover that sets up in the seal cover produce wearing and tearing back alright take over the leakproofness of seal ring assurance butterfly valve main part, the setting of first dead lever and second dead lever is convenient for change the seal cover from built-in groove under rotatory, thereby convenient operation, the effectual hardness that has strengthened the seal ring of the metal gasket that sets up in the seal ring, thereby service life has been strengthened, and the installation is dismantled conveniently, the leakproofness of having guaranteed the butterfly valve main part just has two kinds of seal structure, another side can take over work under the condition of one side wearing and tearing, the possibility of leakage has effectively been prevented.

Drawings

FIG. 1 is a schematic structural diagram of a multi-layer hard seal butterfly valve;

FIG. 2 is an elevation view of a multi-level hard seal butterfly valve;

FIG. 3 is a schematic cross-sectional view of a seal ring in a multi-layer hard seal butterfly valve;

FIG. 4 is a schematic structural diagram of a sealing sleeve in a multi-layer hard seal butterfly valve;

fig. 5 is a top view of a seal cartridge in a multi-level hard seal butterfly valve.

In the figure: 1. a butterfly valve body; 2. a valve stem; 3. a butterfly sheet; 4. a seal ring; 5. a first fixing lever; 6. a threaded rod; 7. a metal gasket; 8. a nut; 9. sealing sleeves; 10. a thread groove; 11. a second fixing bar; 12. an inner anti-slip sleeve; 13. a thread block; 14. a groove is arranged in the groove.

Detailed Description

Please refer to fig. 1-5, in the embodiment of the utility model, a multi-level hard seal butterfly valve, including butterfly valve main part 1, butterfly valve main part 1's inside is provided with valve rod 2, and butterfly piece 3 is installed in the outside of valve rod 2, and the both ends of butterfly piece 3 are provided with metal gasket 7, and metal gasket 7's the outside is provided with sealing washer 4, and metal gasket 7's inside is provided with threaded rod 6, and the outside of valve rod 2 is provided with seal cover 9, and seal cover 9's top is provided with first dead lever 5, and second dead lever 11 is installed in the outside of first dead lever 5.

In fig. 3: the butterfly sheet 3 is connected with the valve rod 2 in a welding mode, the butterfly sheet 3 is rotatably connected with the butterfly valve body 1 through the valve rod 2, the outer diameter of the metal gasket 7 is matched with the inner diameter of the butterfly valve body 1, the metal gaskets 7 are arranged in two numbers and symmetrically arranged at two ends of the butterfly sheet 3, the sealing rings 4 are two rubber components, the sealing rings 4 are respectively arranged at the outer sides of the metal gaskets 7, the sealing rings 4 are connected with the metal gaskets 7 in a gluing mode, the threaded rod 6 is arranged in six numbers and respectively arranged inside the metal gaskets 7 by taking the metal gaskets 7 as circle centers, the metal gaskets 7 are in threaded connection with the butterfly sheet 3 through the threaded rod 6, the outer side of the threaded rod 6 is provided with a nut 8, the inner diameter of the nut 8 is matched with the outer diameter of the threaded rod 6, the threaded rod 6 is connected with the nut 8 in a threaded mode, the, and the installation and the disassembly are convenient.

In fig. 4 and 5: the outer side of the sealing sleeve 9 is provided with an internal groove 14, the internal groove 14 is fixedly connected with the butterfly valve main body 1, the inner diameter of the internal groove 14 is matched with the outer diameter of the sealing sleeve 9, the outer side of the sealing sleeve 9 is provided with a thread block 13, the thread block 13 is welded and connected with the sealing sleeve 9, the thread block 13 is provided with a thread groove 10 corresponding to the internal groove 14, the thread block 13 is connected with the thread groove 10 in a threaded manner, the sealing sleeve 9 is connected with the butterfly valve main body 1 in a threaded manner through the thread block 13, the internal anti-skidding sleeve 12 is arranged inside the sealing sleeve 9, the inner diameter of the internal anti-skidding sleeve 12 is matched with the outer diameter of the valve rod 2, the internal anti-skidding sleeve 12 is a rubber component, the internal anti-skidding sleeve 12 is connected with the sealing sleeve 9 in a gluing manner, the first fixing rod 5 and the second fixing rod 11 are symmetrically arranged at two sides of the sealing sleeve, the inner anti-skid sleeve 12 can take over the sealing ring 4 to guarantee the sealing performance of the butterfly valve main body 1 after the sealing ring 4 is abraded, the sealing sleeve 9 is convenient to replace under the rotation of the built-in groove 14 due to the arrangement of the first fixing rod 5 and the second fixing rod 11, and therefore operation is convenient.

The utility model discloses a theory of operation is: the sealing sleeve 9 is rotated into the butterfly valve body 1 through a thread block 13 on the outer side of the sealing sleeve 9 corresponding to a thread groove 10 in an inner groove 14, then two metal gaskets 7 with sealing rings 4 are attached to two sides of a butterfly sheet 3, after the two metal gaskets are attached, a threaded rod 6 penetrates through the metal gaskets 7 and the butterfly sheet 3, and a nut 8 is rotated into the other end of the threaded rod 6, so that the sealing rings 4 can be firmly fixed on the butterfly sheet 3, a sealing effect can be achieved, after the sealing rings 4 are worn for a period of time, an inner anti-skid sleeve 12 arranged in the sealing sleeve 9 plays a sealing effect so as to prevent the sealing sleeve 9 from being not processed in time when the sealing rings 4 are worn and leakage is caused, the sealing sleeve 9 is arranged on the outer side of the inner anti-skid sleeve 12, the sealing performance of the inner anti-skid sleeve 12 is guaranteed, after the sealing sleeve 9 is worn, the sealing sleeve 9 is driven to rotate through a first fixing rod 5 and a second fixing, the gland 9 can be rotated out of the groove 14 for replacement.

Claims

1. The utility model provides a multi-level butterfly valve sealed firmly, includes butterfly valve main part (1), its characterized in that, the inside of butterfly valve main part (1) is provided with valve rod (2), butterfly piece (3) are installed in the outside of valve rod (2), the both ends of butterfly piece (3) are provided with metal gasket (7), the outside of metal gasket (7) is provided with sealing washer (4), the inside of metal gasket (7) is provided with threaded rod (6), the outside of valve rod (2) is provided with seal cover (9), the top of seal cover (9) is provided with first dead lever (5), second dead lever (11) are installed in the outside of first dead lever (5).

2. The multi-level butterfly valve with hard seal according to claim 1, wherein the butterfly plate (3) is welded to the valve stem (2), the butterfly plate (3) is rotatably connected to the butterfly valve body (1) through the valve stem (2), the outer diameter of the metal gasket (7) is adapted to the inner diameter of the butterfly valve body (1), and two metal gaskets (7) are arranged and symmetrically arranged at two ends of the butterfly plate (3).

3. The multilayer hard seal butterfly valve according to claim 1, wherein there are two seal rings (4), the seal rings (4) are made of rubber, the seal rings (4) are respectively disposed on the outer sides of the metal gaskets (7), and the seal rings (4) are bonded to the metal gaskets (7).

4. The multi-level hard seal butterfly valve according to claim 1, wherein the threaded rod (6) is provided with six, the six threaded rods are respectively arranged inside the metal gasket (7) in an array mode with the metal gasket (7) as a circle center, the metal gasket (7) is in threaded connection with the butterfly piece (3) through the threaded rod (6), a nut (8) is arranged on the outer side of the threaded rod (6), the inner diameter of the nut (8) is matched with the outer diameter of the threaded rod (6), and the threaded rod (6) is in threaded connection with the nut (8).

5. The multi-level hard seal butterfly valve according to claim 1, wherein an internal groove (14) is formed in the outer side of the sealing sleeve (9), the internal groove (14) is fixedly connected with the butterfly valve body (1), the inner diameter of the internal groove (14) is matched with the outer diameter of the sealing sleeve (9), a thread block (13) is installed on the outer side of the sealing sleeve (9), and the thread block (13) is connected with the sealing sleeve (9) in a welding mode.

6. The multi-level hard seal butterfly valve according to claim 5, wherein a thread groove (10) is formed in the position, corresponding to the built-in groove (14), of the thread block (13), the thread block (13) is in threaded connection with the thread groove (10), the sealing sleeve (9) is in threaded connection with the butterfly valve main body (1) through the thread block (13), and an internal anti-slip sleeve (12) is installed inside the sealing sleeve (9).

7. The multi-level hard seal butterfly valve according to claim 6, wherein the inner diameter of the inner anti-slip sleeve (12) is adapted to the outer diameter of the valve stem (2), the inner anti-slip sleeve (12) is a rubber member, the inner anti-slip sleeve (12) is connected to the sealing sleeve (9) by gluing, the first fixing rod (5) and the second fixing rod (11) are symmetrically arranged at two sides of the sealing sleeve (9), the first fixing rod (5) and the second fixing rod (11) are members with the same shape and material, and the first fixing rod (5) and the second fixing rod (11) are connected to the sealing sleeve (9) by welding.