CN221974306U - A triple eccentric butterfly valve with good sealing performance - Google Patents

Abstract

The utility model relates to the technical field of triple offset butterfly valves, in particular to a triple offset butterfly valve with good sealing performance, which comprises a butterfly valve body and two pipelines matched with the butterfly valve body, wherein bolts are arranged in two adjacent first butterfly valve through holes and first pipeline through holes, the bolts are in threaded connection with screw holes, and sealing devices are arranged between one end of the butterfly valve body and one end of each adjacent pipeline. According to the sealing device provided by the utility model, as the first limiting groove, the second limiting groove and the third limiting groove are formed, when the butterfly valve is installed, the first sealing gasket, the second sealing gasket and the third sealing gasket cannot shift and decenter, so that no potential safety hazard is ensured. Because the second pipeline lug is in full contact with the first sealing gasket, the third pipeline lug is in full contact with the second sealing gasket, and the third butterfly valve lug is in full contact with the third sealing gasket, the butterfly valve is used for a long time, so that liquid can not permeate between the lug and the sealing gasket, and the sealing effect is achieved.

Description

A triple eccentric butterfly valve with good sealing performance

Technical Field

The utility model relates to the technical field of triple-eccentric butterfly valves, in particular to a triple-eccentric butterfly valve with good sealing performance.

Background Art

The valve stem axis deviates from the center of the disc and the center of the body at the same time, and the valve seat rotation axis is at a certain angle to the valve body channel axis, which is called a three-eccentric butterfly valve. The three-eccentric butterfly valve consists of a valve and a valve seat, and the valve and the valve seat are an integrated structure. Due to its advantages such as good shut-off performance, less leakage at the valve stem, good adjustment performance, high flow rate, and corrosion resistance, it is widely used in petroleum, gas, chemical, metallurgy, shipbuilding, water conservancy and boiler pipeline systems.

For example, the authorization announcement number "CN220185855U" is a three-eccentric butterfly valve with good sealing performance. Although the spring is in a compressed state, the spring annular block has a tendency to move to the right, so that the gap between the annular rubber pad and the pipeline after aging is driven by the elastic force of the spring to move the annular block and the annular rubber pad to the right to keep close to the pipeline, thereby eliminating the gap between the pipeline and the annular rubber pad. However, when installing the butterfly valve, since the spring is in a compressed state, it is easy to install the annular rubber sleeve eccentrically, which will pose a safety hazard; since the annular block is provided inside the support block, the support block and the annular rubber pad are not in complete planar contact. After long-term use, the annular block will break the annular rubber pad, causing liquid to penetrate between the annular block and the annular rubber pad, affecting the service life of the butterfly valve.

Utility Model Content

The utility model aims to solve the shortcomings in the prior art and proposes a three-eccentric butterfly valve with good sealing performance.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A three-eccentric butterfly valve with good sealing performance is designed, including a butterfly valve body and two matching pipes, a valve cavity is arranged inside the butterfly valve body, a tube cavity is arranged inside the two pipes, the valve cavity and the two tube cavities are connected, first butterfly valve protrusions are arranged in an annular manner at both ends of the outer wall of the butterfly valve body close to the pipe, first pipe protrusions are arranged in an annular manner at one end of the outer wall of the two pipes close to the butterfly valve body, first butterfly valve through holes are arranged on the surfaces of the two first butterfly valve protrusions, first pipe through holes are arranged on the surfaces of the two first pipe protrusions, two adjacent first butterfly valve through holes and first pipe through holes are connected, bolts are arranged inside the two adjacent first butterfly valve through holes and first pipe through holes, nuts are arranged outside the two bolts, screw holes are arranged on the surfaces of the two nuts, the bolts pass through the screw holes, the bolts are threadedly connected to the screw holes, and a sealing device is arranged between one end of the two butterfly valve bodies and one end of the adjacent pipes.

Preferably, the sealing device includes a second butterfly valve protrusion, a second butterfly valve through hole is provided on the surface of the second butterfly valve protrusion, the valve cavity is connected with the second butterfly valve through hole, a second pipe protrusion is provided in an annular manner at one end of the inner wall of the pipe close to the butterfly valve body, a second pipe through hole is provided on the surface of the second pipe protrusion, the pipe cavity is connected with the second pipe through hole, a first sealing gasket is provided in an annular manner between the second butterfly valve protrusion and the second pipe protrusion, the second pipe protrusion is in full contact with the first sealing gasket, a first sealing through hole is provided on the surface of the first sealing gasket, a first limiting groove is provided in an annular manner on the inner wall of the pipe, and the outer walls of the first sealing gasket extend into the first limiting groove.

Preferably, the sealing device includes a third pipe protrusion, a third pipe through hole is provided on the surface of the third pipe protrusion, a first mounting groove is provided at one end of the butterfly valve body close to the pipe, the third pipe protrusion is arranged inside the first mounting groove, a second sealing gasket is provided in an annular manner between one end of the third pipe protrusion and the side wall of the first mounting groove, the third pipe protrusion is in full contact with the second sealing gasket, a second sealing through hole is provided on the surface of the second sealing gasket, a second limiting groove is provided in an annular manner on the inner wall of the inner side of the first mounting groove, and the outer walls of the second sealing gaskets extend into the second limiting groove.

Preferably, the sealing device includes a third butterfly valve protrusion, a fourth pipe through hole is provided on the surface of the third butterfly valve protrusion, a second mounting groove is provided at one end of the pipe close to the butterfly valve body, the third butterfly valve protrusion is arranged inside the second mounting groove, a third sealing gasket is provided in an annular manner between one end of the third butterfly valve protrusion and the side wall of the second mounting groove, the third butterfly valve protrusion is in full contact with the third sealing gasket, a third sealing through hole is provided on the surface of the third sealing gasket, a third limiting groove is provided in an annular manner on the inner wall of the inner side of the second mounting groove, and the inner wall of the third sealing gasket extends into the third limiting groove.

Preferably, the butterfly valve body and the first butterfly valve protrusion are integrally formed, the pipe and the first pipe protrusion are integrally formed, the butterfly valve body and the second butterfly valve protrusion are integrally formed, the pipe and the second pipe protrusion are integrally formed, the pipe and the third pipe protrusion are integrally formed, and the butterfly valve body and the third butterfly valve protrusion are integrally formed.

Preferably, two adjacent first butterfly valve protrusions and first pipeline protrusions are both provided with protective covers in an annular shape on the outside, and the inner walls of the two protective covers are both provided with protective grooves in an annular shape, and the bolts and nuts are arranged inside the protective grooves.

The utility model proposes a three-eccentric butterfly valve with good sealing performance, and the beneficial effect is that: when the bolt and the nut are locked, the second butterfly valve protrusion squeezes the first sealing gasket to form a first sealing defense line, the third pipeline protrusion squeezes the second sealing gasket to form a second sealing defense line, and the third butterfly valve protrusion squeezes the third sealing gasket to form a third sealing defense line. Since the first limiting groove, the second limiting groove and the third limiting groove are provided, when the butterfly valve is installed, the first sealing gasket, the second sealing gasket and the third sealing gasket will not be displaced or eccentric, ensuring that there is no safety hazard. Since the second pipeline protrusion is in full contact with the first sealing gasket, the third pipeline protrusion is in full contact with the second sealing gasket, and the third butterfly valve protrusion is in full contact with the third sealing gasket, the protrusion will not break the sealing gasket during long-term use, ensuring that the liquid will not penetrate from between the protrusion and the sealing gasket, ensuring the service life of the butterfly valve, and achieving the sealing effect.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a structural sectional view of the utility model;

Figure 2 is an enlarged view of position A of the present invention;

FIG3 is an enlarged view of position B of the present invention.

In the figure: butterfly valve body 1, pipeline 2, valve cavity 3, tube cavity 4, first butterfly valve protrusion 5, first pipeline protrusion 6, first butterfly valve through hole 7, first pipeline through hole 8, bolt 9, nut 10, screw hole 11, second butterfly valve protrusion 12, second butterfly valve through hole 13, second pipeline protrusion 14, second pipeline through hole 15, first sealing gasket 16, first sealing through hole 17, first limiting groove 18, third pipeline protrusion 19, third pipeline through hole 20, first installation groove 21, second sealing gasket 22, second sealing through hole 23, second limiting groove 24, third butterfly valve protrusion 25, fourth pipeline through hole 26, second installation groove 27, third sealing gasket 28, third sealing through hole 29, third limiting groove 30, protective cover 31, protective groove 32.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

Referring to Figures 1-3, a three-eccentric butterfly valve with good sealing performance includes a butterfly valve body 1 and two matching pipes 2. The butterfly valve body 1 is provided with a valve cavity 3, and the two pipes 2 are provided with a tube cavity 4. The valve cavity 3 is connected with the two tube cavities 4 to ensure that liquid can flow between the butterfly valve body 1 and the pipe 2. The two ends of the outer wall of the butterfly valve body 1 close to the pipe 2 are both annularly provided with first butterfly valve protrusions 5, and one end of the outer wall of the two pipes 2 close to the butterfly valve body 1 is both annularly provided with first pipe protrusions 6, and the surfaces of the two first butterfly valve protrusions 5 are both provided with first butterfly valve through holes 7, and the surfaces of the two first pipe protrusions 6 are both provided with first pipe through holes 8. Two adjacent first butterfly valve through holes 7 and first pipe through holes 8 are connected, and bolts 9 are provided inside the two adjacent first butterfly valve through holes 7 and first pipe through holes 8, and nuts 10 are provided outside the two bolts 9. Screw holes 11 are provided on the surfaces of the two nuts 10, and the bolts 9 pass through the screw holes 11. The bolts 9 are threadedly connected with the screw holes 11, and a sealing device is provided between one end of the two butterfly valve bodies 1 and one end of the adjacent pipes 2.

The sealing device includes a second butterfly valve protrusion 12, a second butterfly valve through hole 13 is provided on the surface of the second butterfly valve protrusion 12, the valve cavity 3 is connected to the second butterfly valve through hole 13, a second pipeline protrusion 14 is provided in an annular manner at one end of the inner wall of the pipeline 2 close to the butterfly valve body 1, a second pipeline through hole 15 is provided on the surface of the second pipeline protrusion 14, the tube cavity 4 is connected to the second pipeline through hole 15, a first sealing gasket 16 is provided in an annular manner between the second butterfly valve protrusion 12 and the second pipeline protrusion 14, the second pipeline protrusion 14 is in full contact with the first sealing gasket 16, and the second pipeline protrusion 14 will not break the first sealing gasket 16 after long-term use, ensuring that the liquid will not penetrate from between the second pipeline protrusion 14 and the first sealing gasket 16, ensuring the service life of the butterfly valve, and achieving the sealing effect. A first sealing through hole 17 is provided on the surface of the first sealing gasket 16, and a first limiting groove 18 is provided in an annular manner on the inner wall of the pipeline 2, and the outer wall of the first sealing gasket 16 extends into the first limiting groove 18. When the butterfly valve is installed, the first sealing gasket 16 will not be displaced or eccentric, ensuring that there is no safety hazard.

The sealing device includes a third pipeline protrusion 19, a third pipeline through hole 20 is provided on the surface of the third pipeline protrusion 19, a first installation groove 21 is provided at one end of the butterfly valve body 1 close to the pipeline 2, the third pipeline protrusion 19 is arranged inside the first installation groove 21, and a second sealing gasket 22 is provided in an annular manner between one end of the third pipeline protrusion 19 and the side wall of the first installation groove 21. The third pipeline protrusion 19 is in full contact with the second sealing gasket 22. After long-term use, the third pipeline protrusion 19 will not break the second sealing gasket 22, ensuring that the liquid will not penetrate between the third pipeline protrusion 19 and the second sealing gasket 22, ensuring the service life of the butterfly valve, and achieving the sealing effect. A second sealing through hole 23 is provided on the surface of the second sealing gasket 22, and a second limiting groove 24 is provided in an annular manner on the inner wall of the inner side of the first installation groove 21, and the outer wall of the second sealing gasket 22 extends into the second limiting groove 24. When the butterfly valve is installed, the second sealing gasket 22 will not be displaced or eccentric, ensuring that there is no safety hazard.

The sealing device includes a third butterfly valve protrusion 25, a fourth pipeline through hole 26 is provided on the surface of the third butterfly valve protrusion 25, a second installation groove 27 is provided at one end of the pipeline 2 close to the butterfly valve body 1, the third butterfly valve protrusion 25 is arranged inside the second installation groove 27, a third sealing gasket 28 is provided in an annular manner between one end of the third butterfly valve protrusion 25 and the side wall of the second installation groove 27, the third butterfly valve protrusion 25 is in full contact with the third sealing gasket 28, and the third butterfly valve protrusion 25 will not break the third sealing gasket 28 after long-term use, ensuring that the liquid will not penetrate between the third butterfly valve protrusion 25 and the third sealing gasket 28, ensuring the service life of the butterfly valve, and achieving the sealing effect. A third sealing through hole 29 is provided on the surface of the third sealing gasket 28, and a third limiting groove 30 is provided in an annular manner on the inner wall of the inner side of the second installation groove 27, and the inner wall of the third sealing gasket 28 extends into the third limiting groove 30. When the butterfly valve is installed, the third sealing gasket 28 will not be displaced or eccentric, ensuring that there is no safety hazard.

The butterfly valve body 1 and the first butterfly valve protrusion 5 are integrally formed, so that the connection between the butterfly valve body 1 and the first butterfly valve protrusion 5 is more firmly; the pipeline 2 and the first pipeline protrusion 6 are integrally formed, so that the connection between the pipeline 2 and the first pipeline protrusion 6 is more firmly; the butterfly valve body 1 and the second butterfly valve protrusion 12 are integrally formed, so that the connection between the butterfly valve body 1 and the second butterfly valve protrusion 12 is more firmly; the pipeline 2 and the second pipeline protrusion 14 are integrally formed, so that the connection between the pipeline 2 and the second pipeline protrusion 14 is more firmly; the pipeline 2 and the third pipeline protrusion 19 are integrally formed, so that the connection between the pipeline 2 and the third pipeline protrusion 19 is more firmly; the butterfly valve body 1 and the third butterfly valve protrusion 25 are integrally formed, so that the connection between the butterfly valve body 1 and the third butterfly valve protrusion 25 is more firmly.

The outer parts of the two adjacent first butterfly valve protrusions 5 and the first pipeline protrusions 6 are both provided with protective covers 31 in an annular shape, and the inner walls of the two protective covers 31 are both provided with protective grooves 32 in an annular shape, and the bolts 9 and nuts 10 are arranged inside the protective grooves 32. When used in a harsh environment, it can be ensured that rain, snow, moisture, dust and oil stains cannot corrode the bolts 9 and nuts 10.

Working principle: During installation, firstly, make the multiple first butterfly valve through holes 7 correspond to the first pipe through holes 8 one by one; then insert the first sealing gasket 16 into the first limiting groove 18, insert the second sealing gasket 22 into the second limiting groove 24, and insert the third sealing gasket 28 into the third limiting groove 30 for positioning; next, dock the two ends of the butterfly valve body 1 with the two pipes 2 respectively, and then pass the bolt 9 through the first butterfly valve through hole 7 and the first pipe through hole 8; then thread the bolt 9 with the screw hole 11 and lock it; finally, sleeve the protective cover 31 onto the outside of the first butterfly valve protrusion 5 and the first pipe protrusion 6, and the installation is complete.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims (6)

1. The utility model provides a triple offset butterfly valve that leakproofness is good, includes butterfly valve body (1) and two pipeline (2) that match with it, its characterized in that, butterfly valve body (1) inside is equipped with valve pocket (3), two pipeline (2) inside all is equipped with lumen (4), valve pocket (3) and two lumen (4) intercommunication, butterfly valve body (1) are close to the outer wall both ends of pipeline (2) and all are annular to be equipped with first butterfly valve lug (5), two pipeline (2) are close to the outer wall one end of butterfly valve body (1) all are annular to be equipped with first pipeline lug (6), two first butterfly valve lug (5) surface all are equipped with first butterfly valve through-hole (7), two adjacent first butterfly valve through-hole (7) and first pipeline through-hole (8) all communicate, two adjacent first screw (7) and first pipeline through-hole (8) inside all are equipped with bolt (9), two bolt (9) outside all are equipped with nut (10) near the outer wall one end of butterfly valve body (1), two first butterfly valve lug (5) surface all are equipped with first butterfly valve through-hole (8), two first butterfly valve lug (6) surface all are equipped with bolt (11) and bolt (11), sealing devices are arranged between one end of each butterfly valve body (1) and one end of each adjacent pipeline (2).

2. The triple offset butterfly valve with good sealing performance according to claim 1, wherein the sealing device comprises a second butterfly valve lug (12), a second butterfly valve through hole (13) is formed in the surface of the second butterfly valve lug (12), the valve cavity (3) is communicated with the second butterfly valve through hole (13), a second pipe lug (14) is annularly arranged at one end, close to the inner wall of the butterfly valve body (1), of the pipe (2), a second pipe through hole (15) is formed in the surface of the second pipe lug (14), a first sealing gasket (16) is annularly arranged between the pipe cavity (4) and the second pipe through hole (15), the second pipe lug (12) and the second pipe lug (14) are completely contacted with the first sealing gasket (16), a first sealing through hole (17) is formed in the surface of the first sealing gasket (16), a first limiting groove (18) is annularly formed in the inner wall of the pipe (2), and the outer wall of the first sealing gasket (16) extends into the first limiting groove (18).

3. The triple offset butterfly valve with good sealing performance according to claim 2, wherein the sealing device comprises a third pipeline lug (19), a third pipeline through hole (20) is formed in the surface of the third pipeline lug (19), a first mounting groove (21) is formed in one end, close to a pipeline (2), of the butterfly valve body (1), the third pipeline lug (19) is arranged inside the first mounting groove (21), a second sealing gasket (22) is annularly arranged between one end of the third pipeline lug (19) and the side wall of the first mounting groove (21), the third pipeline lug (19) is in complete contact with the second sealing gasket (22), a second sealing through hole (23) is formed in the surface of the second sealing gasket (22), a second limiting groove (24) is annularly formed in the inner side wall of the first mounting groove (21), and the outer wall of the second sealing gasket (22) extends into the second limiting groove (24).

4. The triple offset butterfly valve with good sealing performance according to claim 3, wherein the sealing device comprises a third butterfly valve lug (25), a fourth pipeline through hole (26) is formed in the surface of the third butterfly valve lug (25), a second mounting groove (27) is formed in one end, close to the butterfly valve body (1), of the pipeline (2), the third butterfly valve lug (25) is arranged inside the second mounting groove (27), a third sealing gasket (28) is annularly arranged between one end of the third butterfly valve lug (25) and the side wall of the second mounting groove (27), the third butterfly valve lug (25) is completely contacted with the third sealing gasket (28), a third sealing through hole (29) is formed in the surface of the third sealing gasket (28), a third limiting groove (30) is annularly formed in the inner wall of the second mounting groove (27), and the inner wall of the third sealing gasket (28) extends into the third limiting groove (30).

5. The triple offset butterfly valve with good sealing performance according to claim 4, wherein the butterfly valve body (1) is integrally formed with the first butterfly valve bump (5), the pipe (2) is integrally formed with the first pipe bump (6), the butterfly valve body (1) is integrally formed with the second butterfly valve bump (12), the pipe (2) is integrally formed with the second pipe bump (14), the pipe (2) is integrally formed with the third pipe bump (19), and the butterfly valve body (1) is integrally formed with the third butterfly valve bump (25).

6. The triple offset butterfly valve with good sealing performance according to claim 1, wherein two adjacent first butterfly valve convex blocks (5) and first pipeline convex blocks (6) are all annularly provided with a protective cover (31), two inner walls of the protective cover (31) are all annularly provided with a protective groove (32), and the bolt (9) and the nut (10) are arranged in the protective groove (32).