CN215059550U - Durable eccentric butterfly valve - Google Patents
Durable eccentric butterfly valve Download PDFInfo
- Publication number
- CN215059550U CN215059550U CN202121280002.2U CN202121280002U CN215059550U CN 215059550 U CN215059550 U CN 215059550U CN 202121280002 U CN202121280002 U CN 202121280002U CN 215059550 U CN215059550 U CN 215059550U
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- valve
- valve body
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- durable
- butterfly valve
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Abstract
The utility model provides a durable eccentric butterfly valve, including butterfly valve body and connecting tube, the butterfly valve body includes the valve body, valve rod and valve clack, be provided with sealed disk seat on the inner wall of valve body, valve rod movable mounting is in the valve body, sealing connection between the outer wall of valve rod and the inner wall of valve body upper portion, it has annular bevel connection to open respectively on the entrance point of valve body and the exit end inner wall, be provided with the external screw thread on the entrance point of valve body and the exit end outer wall, be provided with annular bevel connection on the entrance point outer wall of connecting tube, the connecting tube is provided with the clamp ring on being close to the outer wall of annular bevel connection, compress tightly the entrance point at the valve body with the entrance point of connecting tube through gland nut, the utility model discloses the advantage is: the sealing performance between the butterfly valve and the pipeline is good, and the scale can be quickly removed after the scale is formed in the butterfly valve, so that the butterfly valve is convenient and durable.
Description
Technical Field
The utility model relates to a valve field, concretely relates to durable type eccentric butterfly valve.
Background
At present, the sealing performance of the connecting part of the existing eccentric butterfly valve and a pipeline is poor, the inner wall of the eccentric butterfly valve is easy to scale, the sealing performance of a valve clack is influenced, and the eccentric butterfly valve is not durable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a durable eccentric butterfly valve aiming at the defects.
The utility model comprises a butterfly valve body and a connecting pipeline, wherein the butterfly valve body comprises a valve body, a valve rod and a valve clack,
the inner wall of the valve body is provided with a sealing valve seat, the valve rod is movably arranged in the valve body, the outer wall of the valve rod is in sealing connection with the inner wall of the upper part of the valve body, the inner walls of the inlet end and the outlet end of the valve body are respectively provided with an annular bevel, the outer walls of the inlet end and the outlet end of the valve body are provided with external threads, the outer wall of the inlet end of the connecting pipeline is provided with the annular bevel, the outer wall of the connecting pipeline, which is close to the annular bevel, is provided with a pressing ring, and the inlet end of the connecting pipeline is pressed at the inlet end of the valve body through a pressing nut,
a pair of valve rod connecting sleeves are symmetrically distributed on the valve clack, a pair of reinforcing ribs are symmetrically distributed between the valve rod connecting sleeves and the valve clack, the lower part of the valve rod is inserted into the pair of valve rod connecting sleeves and is fastened through a bolt, and the valve clack is positioned in the valve body;
the bottom of the valve rod is arranged in the valve body through a self-lubricating bearing, and the self-lubricating bearing comprises an outer steel back layer, a spherical bronze powder middle layer and a modified polytetrafluoroethylene inner surface layer which are sequentially arranged from outside to inside; the outer layer steel back layer is of a cylindrical structure and is 304 steel or 316 steel; the spherical bronze powder interlayer is sintered on the inner surface of the outer steel back layer; the modified polytetrafluoroethylene inner surface layer is bonded on the spherical bronze powder intermediate layer, a strip-shaped spiral groove is further arranged on the inner wall of the modified polytetrafluoroethylene inner surface layer from top to bottom, a self-lubricating material is filled in the strip-shaped spiral groove, and the self-lubricating material is flush with the inner surface of the modified polytetrafluoroethylene inner surface layer.
The inner wall of one end of the compression nut is provided with an internal thread, the other end of the compression nut is internally provided with a compression ring accommodating groove, and the compression ring is positioned in the compression ring accommodating groove.
The descaling device is characterized by also comprising a pair of descaling pipelines, wherein the inlet ends of the descaling pipelines are provided with stop valves, one descaling pipeline is obliquely arranged at the upper part of the valve body, and the other descaling pipeline is arranged at the bottom of the valve body.
And a sealing ring mounting groove is formed in the outer circumference of the valve clack, and a sealing ring is mounted in the sealing ring mounting groove and fixed on the valve clack through a sealing ring pressing ring.
The top of the valve rod is provided with a pneumatic actuator or a hand wheel.
The self-lubricating material is a solid lubricant.
The inner surface layer of the modified polytetrafluoroethylene is made of graphite reinforced polytetrafluoroethylene material.
The utility model has the advantages that: the sealing performance between the butterfly valve and the pipeline is good, and the scale can be quickly removed after the scale is formed in the butterfly valve, so that the butterfly valve is convenient and durable.
Description of the drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the valve flap of the present invention.
Fig. 3 is a schematic structural view of a self-lubricating bearing.
Fig. 4 is a schematic cross-sectional view of a self-lubricating bearing.
Detailed Description
As shown in the attached drawings, the utility model comprises a butterfly valve body and a connecting pipeline 1, wherein the butterfly valve body comprises a valve body 2, a valve rod 3 and a valve clack 4,
the inner wall of the valve body 2 is provided with a sealing valve seat 4, the valve rod 3 is movably arranged in the valve body 2, the outer wall of the valve rod 3 is hermetically connected with the inner wall of the upper part of the valve body 2, the inner walls of the inlet end and the outlet end of the valve body 2 are respectively provided with an annular bevel, the outer walls of the inlet end and the outlet end of the valve body 2 are provided with external threads, the outer wall of the inlet end of the connecting pipeline 1 is provided with the annular bevel, the outer wall of the connecting pipeline 1 close to the annular bevel is provided with a pressing ring 5, the inlet end of the connecting pipeline 1 is pressed at the inlet end of the valve body 2 through a pressing nut 8,
a pair of valve rod connecting sleeves 6 are symmetrically distributed on the valve clack 4, a pair of reinforcing ribs 7 are symmetrically distributed between the valve rod connecting sleeves 6 and the valve clack 4, the lower part of the valve rod 3 is inserted into the pair of valve rod connecting sleeves 6 and is fastened through bolts, and the valve clack 4 is positioned in the valve body 2;
the bottom of the valve rod 3 is installed in the valve body 2 through a self-lubricating bearing 10, and the self-lubricating bearing 10 comprises an outer steel back layer 11, a spherical bronze powder middle layer 12 and a modified polytetrafluoroethylene inner surface layer 13 which are sequentially arranged from outside to inside; the outer steel back layer 11 is of a cylindrical structure and is 304 steel or 316 steel; the spherical bronze powder intermediate layer 12 is sintered on the inner surface of the outer steel back layer 11; the modified polytetrafluoroethylene inner surface layer 13 is bonded on the spherical bronze powder intermediate layer 12, a strip-shaped spiral groove 31 is further arranged on the inner wall of the modified polytetrafluoroethylene inner surface layer 13 from top to bottom, a self-lubricating material is filled in the strip-shaped spiral groove 31, and the self-lubricating material is flush with the inner surface of the modified polytetrafluoroethylene inner surface layer 13.
The inner wall of one end of the compression nut 8 is provided with an internal thread, the other end of the compression nut 8 is internally provided with a compression ring accommodating groove, and the compression ring 5 is positioned in the compression ring accommodating groove.
The descaling device is also provided with a pair of descaling pipelines 9, the inlet ends of the descaling pipelines 9 are provided with stop valves, one descaling pipeline 9 is obliquely arranged at the upper part of the valve body 2, and the other descaling pipeline 9 is arranged at the bottom of the valve body 2.
And a sealing ring mounting groove is formed in the outer circumference of the valve clack 4, and a sealing ring is mounted in the sealing ring mounting groove and fixed on the valve clack 4 through a sealing ring pressing ring.
The top of the valve rod 3 is provided with a pneumatic actuator or a hand wheel.
The self-lubricating material is a solid lubricant.
The modified polytetrafluoroethylene inner surface layer 13 is a graphite reinforced polytetrafluoroethylene material.
The working mode and principle are as follows: when the valve body 2 is in butt joint with the connecting pipeline 1, a worker sleeves the compression nut 8 on the connecting pipeline 1, the compression ring 5 is located in the compression ring accommodating groove, the worker rotates the compression nut 8 at the inlet end of the valve body 2, and the compression nut 8 drives the annular bevel opening of the connecting pipeline 1 to be in butt joint with the annular bevel opening of the inlet end of the valve body 2. When the scale in the valve body 2 needs to be washed, the pair of scale removing pipelines 9 are communicated, and a washing medium is filled into the valve body 2 to wash the scale in the valve body 2, wherein the washing medium is the same as the conveying medium in the valve body 2. A pair of reinforcing ribs 7 are symmetrically distributed between the valve rod connecting sleeve 6 and the valve clack 4, so that the valve rod 3 and the valve clack 4 are connected more firmly. The outer steel backing layer 11 of self-lubricating bearing 10 adopts 304 steel or 316 steel can make the bearing possess certain intensity and stable size, at the spherical bronze powder intermediate level 12 of surface sintering of outer steel backing layer 11, graphite reinforcing polytetrafluoroethylene material bonds on spherical bronze powder intermediate level 12 as modified polytetrafluoroethylene inner surface layer 13, graphite reinforcing polytetrafluoroethylene material is with polytetrafluoroethylene to fill graphite into as the base stock, just if the sand principle is the same in the cement, graphite can mainly promote polytetrafluoroethylene's self-lubricating property, in addition stand wear and tear, high temperature resistant, resistant creep, the material is cheap.
Claims (7)
1. A durable eccentric butterfly valve comprises a butterfly valve body and a connecting pipeline 1, and is characterized in that the butterfly valve body comprises a valve body 2, a valve rod 3 and a valve clack 4,
a sealing valve seat (4) is arranged on the inner wall of the valve body (2), the valve rod (3) is movably arranged in the valve body (2), the outer wall of the valve rod (3) is in sealing connection with the inner wall of the upper part of the valve body (2), annular bevel openings are respectively arranged on the inner walls of the inlet end and the outlet end of the valve body (2), external threads are arranged on the outer walls of the inlet end and the outlet end of the valve body (2), an annular bevel opening is arranged on the outer wall of the inlet end of the connecting pipeline (1), a pressing ring (5) is arranged on the outer wall of the connecting pipeline (1) close to the annular bevel opening, the inlet end of the connecting pipeline (1) is pressed at the inlet end of the valve body (2) through a pressing nut (8),
a pair of valve rod connecting sleeves (6) are symmetrically distributed on the valve clack (4), a pair of reinforcing ribs (7) are symmetrically distributed between the valve rod connecting sleeves (6) and the valve clack (4), the lower part of the valve rod (3) is inserted into the pair of valve rod connecting sleeves (6) and is fastened through bolts, and the valve clack (4) is positioned in the valve body (2);
the bottom of the valve rod (3) is arranged in the valve body (2) through a self-lubricating bearing (10), and the self-lubricating bearing (10) comprises an outer steel back layer (11), a spherical bronze powder intermediate layer (12) and a modified polytetrafluoroethylene inner surface layer (13) which are sequentially arranged from outside to inside; the outer steel back layer (11) is of a cylindrical structure and is 304 steel or 316 steel; the spherical bronze powder intermediate layer (12) is sintered on the inner surface of the outer steel back layer (11); modified polytetrafluoroethylene inner surface layer (13) bond in on spherical bronze powder intermediate layer (12), it is equipped with a rectangular spiral groove (31) still to go up top-down on the inner wall of modified polytetrafluoroethylene inner surface layer (13), rectangular spiral groove (31) intussuseption is filled with self-lubricating material, and self-lubricating material is parallel and level mutually with the internal surface of modified polytetrafluoroethylene inner surface layer (13).
2. A durable eccentric butterfly valve according to claim 1, characterised in that the compression nut (8) has an internal thread on its inner wall at one end and a compression ring receiving groove in the other end of the compression nut (8), the compression ring (5) being located in the compression ring receiving groove.
3. A durable eccentric butterfly valve according to claim 1, characterised in that it further comprises a pair of descaling pipes (9), the inlet ends of the descaling pipes (9) being provided with shut-off valves, one of the descaling pipes (9) being mounted obliquely in the upper part of the valve body (2) and the other descaling pipe (9) being mounted in the bottom part of the valve body (2).
4. A durable eccentric butterfly valve according to claim 1, characterised in that the valve flap (4) is provided with a sealing ring mounting groove on its outer circumference, the sealing ring being mounted in the sealing ring mounting groove and fixed to the valve flap (4) by a sealing ring holding ring.
5. A durable eccentric butterfly valve according to claim 1, characterised in that a pneumatic actuator or handwheel is arranged on top of the valve stem (3).
6. A durable eccentric butterfly valve according to claim 1, wherein said self-lubricating material is a solid lubricant.
7. A durable eccentric butterfly valve according to claim 1, characterised in that said modified ptfe inner surface layer (13) is of graphite reinforced ptfe material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121280002.2U CN215059550U (en) | 2021-06-09 | 2021-06-09 | Durable eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121280002.2U CN215059550U (en) | 2021-06-09 | 2021-06-09 | Durable eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215059550U true CN215059550U (en) | 2021-12-07 |
Family
ID=79204707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121280002.2U Active CN215059550U (en) | 2021-06-09 | 2021-06-09 | Durable eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215059550U (en) |
-
2021
- 2021-06-09 CN CN202121280002.2U patent/CN215059550U/en active Active
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