CN211371317U - Corrosion-resistant valve body - Google Patents
Corrosion-resistant valve body Download PDFInfo
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- CN211371317U CN211371317U CN201922429624.6U CN201922429624U CN211371317U CN 211371317 U CN211371317 U CN 211371317U CN 201922429624 U CN201922429624 U CN 201922429624U CN 211371317 U CN211371317 U CN 211371317U
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- valve
- valve rod
- shaft hole
- valve body
- corrosion resistant
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Abstract
The utility model provides a corrosion-resistant valve body, include: a body; the side wall of one side of the body is provided with an axle hole, the inner surface of the side wall of the other side is provided with a slotted hole, and the axle hole and the slotted hole are matched to form a valve rod channel; a connecting piece is convexly arranged on the side wall of the body provided with the shaft hole, a valve rod jack is arranged at one end of the connecting piece, which is far away from the body, and the valve rod jack and the valve rod channel are coaxially arranged; a sealing ring platform is convexly arranged on the inner wall of the body between the shaft hole and the port at one end of the body along the circumferential direction of the body; and a distance exists between the axial center line of the valve rod channel and the longitudinal center line of the body to form an eccentric structure. The valve body is designed by a double-eccentric structure, and combines the deviation from the plane of the sealing surface loaded with the valve rod to the central line of the valve rod to form a triple-eccentric structure, so that the sealing structure of the valve is changed, and a torsion seal is formed, so that the butterfly valve has stronger high-pressure and high-temperature resistance.
Description
Technical Field
The utility model belongs to the technical field of the butterfly valve, specifically, relate to a corrosion-resistant valve body.
Background
The valve rod axis deviates from the center of the disc and the center of the body at the same time, and the valve seat rotation axis has a certain angle with the valve body channel axis, which is called a triple eccentric butterfly valve.
The three-eccentric butterfly valve is widely used for industrial pipelines with medium temperature less than or equal to 95 ℃, such as metallurgy, electric power, petrochemical industry, water supply and drainage, municipal construction and the like, and is used for adjusting flow and carrying out fluid cutoff.
The three-eccentric butterfly valve is a butterfly valve which protrudes out of the industrial pipeline at present, and belongs to the category of hard sealing butterfly valves according to the sealing form. Therefore, the triple eccentric butterfly valve has the characteristics of a hard seal butterfly valve, is high temperature resistant and erosion resistant, and has a long service life. And because the triple eccentric butterfly valve directly welds the high-temperature corrosion resistant alloy material on the surface of the valve seat, the valve also has excellent sealing performance like a soft sealing butterfly valve.
For the butterfly valve body, chinese patent with publication number CN106678376A discloses a butterfly valve body with a butterfly valve sealing surface with a continuously variable cone curved surface, the butterfly valve body includes a valve body, a circular ring shaped valve seat and a shaft seat hole are arranged in the valve body, the circular ring shaped valve seat is arranged on one side below the shaft seat hole along the circumferential direction, a continuously variable cone high-order concave curved surface is manufactured on the sealing surface of the circular ring shaped valve seat, and the continuously variable cone high-order concave curved surface can be consistent with the geometrical shape of an outward convex butterfly plate sealing ring formed by processing according to a simple revolving body after the sealing surface is deformed by force and can be tightly sealed. The valve body is provided with a continuously-changed conical high-order concave curved surface on the sealing surface of the valve body, so that the sealing gap caused by the non-uniform deformation of the sealing surface of the butterfly plate is compensated, the sealing gap caused by the deformation of the sealing surface of the butterfly plate is reduced or eliminated, the shapes of all parts of the sealing pair are consistent or close to consistent, the purpose of reliable sealing is realized, and the sealing performance is improved. However, the valve body that this patent provided, in order to promote sealing performance, designed the continuous variable cone curved surface, lead to the processing degree of difficulty great, manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists, the utility model aims to provide a corrosion-resistant valve body, the valve body combines the skew of the sealed face place plane to valve rod central line behind the loading valve rod through two eccentric structural design, forms three eccentric structure, has changed the sealed structure of valve, forms torsion seal for the butterfly valve has stronger high pressure resistant high temperature performance.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a corrosion resistant valve body, said valve body comprising: the body is in the shape of a pipe body; a shaft hole communicated with the inner side of the body is formed in the side wall of one side of the body, a slotted hole coaxial with the shaft hole is formed in the inner surface of the side wall of the other side of the body, and the shaft hole and the slotted hole are matched to form a valve rod channel; a connecting piece is arranged on the side wall of the body provided with the shaft hole in a protruding mode along the axial direction of the shaft hole, a valve rod jack which is communicated with the shaft hole and coaxial with the shaft hole is arranged on the end face, far away from the end face of the body, of the connecting piece along the axial direction of the shaft hole, the valve rod jack penetrates through the connecting piece, and the valve rod jack and the valve rod channel are arranged coaxially; a sealing ring platform is convexly arranged on the inner wall of the body between the shaft hole and the port at one end of the body along the circumferential direction of the body; and a distance exists between the axial center line of the valve rod channel and the longitudinal center line of the body to form an eccentric structure.
Furthermore, the end faces of the two ports of the body are respectively connected with a connecting flange, a plurality of connecting through holes are arranged on the two connecting flanges at intervals, and the connecting through holes on the two connecting flanges are arranged in a pairwise corresponding manner.
Furthermore, the end faces of the two ports of the body close to the slotted hole are respectively provided with a C-shaped groove along the axial direction of the body, and the two C-shaped grooves are arranged in mirror symmetry.
Furthermore, the end face of the connecting piece, far away from one end of the body, is convexly provided with a connecting ring platform along the circumferential direction of the connecting piece, the middle part of the end face of the connecting piece, far away from the end face of the connecting piece, of the connecting ring platform is provided with a connecting ring groove, and the bottom surface of the connecting ring groove is communicated with the valve rod jack.
Furthermore, a plurality of reinforcing blocks are arranged between the side wall of the connecting piece and the side wall of the body at intervals along the circumferential direction of the connecting piece.
Further, the inner diameter of the valve rod insertion hole is larger than that of the shaft hole.
Furthermore, the inner annular surface of the sealing ring platform is a conical surface, and an included angle is formed between the central line of the cone where the conical surface is located and the axial central line of the body.
Further, the distance between the axial center line of the valve rod channel and the longitudinal center line of the body is 5 mm.
Further, the surface of the body is coated with a corrosion-resistant coating, and the corrosion-resistant coating is a phenolic epoxy coating.
The beneficial effects of the utility model reside in that:
the valve body is designed by the space between the axial center line of the valve rod channel and the longitudinal center line of the body to form a first eccentricity, by the conical surface design of the inner annular surface of the sealing ring platform, an included angle is formed between the central line of the cone where the conical surface is formed and the axial central line of the body to form a second eccentricity, and a triple-eccentricity structure is formed by combining the deviation from the plane where the sealing surface is located after the valve rod is loaded to the central line of the valve rod, so that the sealing structure of the valve is changed, the traditional position sealing is not needed, but is a torsion seal, namely, the seal is realized not by the elastic deformation of the valve seat, but by the contact surface pressure of the butterfly plate sealing surface and the valve seat, the problem of large leakage of the metal valve seat is well solved, and the contact surface pressure is in direct proportion to the medium pressure, so that the triple eccentric butterfly valve has strong high-pressure and high-temperature resistance.
Drawings
Fig. 1 is a schematic structural view of a corrosion-resistant valve body provided by the present invention;
fig. 2 is a schematic sectional view taken along the line a-a in fig. 1.
Detailed Description
Referring to fig. 1-2, a corrosion-resistant valve body, the valve body includes: the body 1 is in the shape of a pipe body; a shaft hole 11 communicated with the inner side of the body 1 is formed in the side wall of one side of the body 1, a slotted hole 12 coaxial with the shaft hole 11 is formed in the inner surface of the side wall of the other side of the body 1, and the shaft hole 11 and the slotted hole 12 are matched to form a valve rod channel; a connecting piece 2 is arranged on the side wall of the body 1 provided with the shaft hole 11 in a protruding mode along the axial direction of the shaft hole 11, a valve rod jack 21 which is communicated with the shaft hole 11 and coaxial with the shaft hole 11 is arranged on the end face, far away from the body 1, of the connecting piece 2 along the axial direction of the shaft hole 11, the valve rod jack 21 penetrates through the connecting piece 2, and the valve rod jack 21 and a valve rod channel are arranged coaxially; a sealing ring platform 3 is convexly arranged on the inner wall of the body 1 between the shaft hole 11 and one end port of the body 1 along the circumferential direction of the body 1; the axial center line 100 of the valve rod channel and the longitudinal center line 101 of the body 1 are separated to form an eccentric structure.
Furthermore, the end faces of the two ports of the body 1 are respectively connected with a connecting flange 4, a plurality of connecting through holes 41 are formed in the two connecting flanges 4 at intervals, and the connecting through holes 41 in the two connecting flanges 4 are arranged in a pairwise corresponding manner.
Furthermore, the end faces of the two ports of the body close to the slot 12 are respectively provided with a C-shaped groove 13 along the axial direction of the body 1, and the two C-shaped grooves 13 are arranged in mirror symmetry.
Further, the 2 terminal surfaces of connecting piece along the protruding connecting ring platform 22 that is equipped with of 2 circumference of connecting piece of the 1 one end of body of keeping away from, connecting ring platform 22 keeps away from 2 one end terminal surface middle parts of connecting piece and has seted up a connection annular groove 23, connection annular groove 23 bottom surface and valve rod jack 21 intercommunication.
Further, a plurality of reinforcing blocks 24 are arranged between the side wall of the connecting piece 2 and the side wall of the body 1 at intervals along the circumferential direction of the connecting piece 2.
Further, the inner diameter of the valve stem insertion hole 21 is larger than the inner diameter of the shaft hole 11.
Furthermore, the inner annular surface of the sealing ring table 3 is a conical surface, and an included angle exists between the cone center line 32 of the cone 31 where the conical surface is located and the axial center line 102 of the body 1.
Further, the axial centerline 100 of the stem passageway is spaced 5mm from the longitudinal centerline 101 of the body 1.
Further, the surface of the body 1 is coated with a corrosion-resistant coating (not shown), and the corrosion-resistant coating is a novolac epoxy coating.
The valve body formed by the body 1, the connecting piece 2, the sealing ring platform 3 and the connecting flange 4 is made of PVC-C (chlorinated polyvinyl chloride).
The corrosion-resistant valve body of the utility model forms a first eccentricity by the design of the space between the axial central line of the valve rod channel and the longitudinal central line of the body, by the conical surface design of the inner annular surface of the sealing ring platform, an included angle is formed between the central line of the cone where the conical surface is formed and the axial central line of the body to form a second eccentricity, and a triple-eccentricity structure is formed by combining the deviation from the plane where the sealing surface is located after the valve rod is loaded to the central line of the valve rod, so that the sealing structure of the valve is changed, the traditional position sealing is not needed, but is a torsion seal, namely, the seal is realized not by the elastic deformation of the valve seat, but by the contact surface pressure of the butterfly plate sealing surface and the valve seat, the problem of large leakage of the metal valve seat is well solved, and the contact surface pressure is in direct proportion to the medium pressure, so that the triple eccentric butterfly valve has strong high-pressure and high-temperature resistance.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications and equivalent arrangements can be made without departing from the scope of the present invention, which is intended to be covered by the appended claims.
Claims (9)
1. A corrosion resistant valve body, said valve body comprising:
the body is in the shape of a pipe body;
a shaft hole communicated with the inner side of the body is formed in the side wall of one side of the body, a slotted hole coaxial with the shaft hole is formed in the inner surface of the side wall of the other side of the body, and the shaft hole and the slotted hole are matched to form a valve rod channel;
a connecting piece is arranged on the side wall of the body provided with the shaft hole in a protruding mode along the axial direction of the shaft hole, a valve rod jack which is communicated with the shaft hole and coaxial with the shaft hole is arranged on the end face, far away from the end face of the body, of the connecting piece along the axial direction of the shaft hole, the valve rod jack penetrates through the connecting piece, and the valve rod jack and the valve rod channel are arranged coaxially;
a sealing ring platform is convexly arranged on the inner wall of the body between the shaft hole and the port at one end of the body along the circumferential direction of the body;
and a distance exists between the axial center line of the valve rod channel and the longitudinal center line of the body to form an eccentric structure.
2. The corrosion-resistant valve body according to claim 1, wherein the end surfaces of the two ports of the body are respectively connected with a connecting flange, a plurality of connecting through holes are arranged on the two connecting flanges at intervals, and the connecting through holes on the two connecting flanges are arranged in a pairwise correspondence manner.
3. The corrosion-resistant valve body of claim 1, wherein the end faces of the two ends of the body near the slot are respectively provided with a C-shaped groove along the axial direction of the body, and the two C-shaped grooves are arranged in mirror symmetry.
4. The corrosion resistant valve body of claim 1 wherein the end surface of the connecting member remote from the end of the body is provided with a connecting ring land protruding along the circumferential direction of the connecting member, the connecting ring land is provided with a connecting ring groove at the middle of the end surface of the connecting member remote from the end of the connecting member, and the bottom surface of the connecting ring groove is in communication with the valve stem insertion hole.
5. The corrosion resistant valve body of claim 1 or 4 wherein the connector sidewall and the body sidewall are provided with a plurality of reinforcing blocks circumferentially spaced about the connector.
6. The corrosion resistant valve body of claim 1 wherein said stem socket has an inner diameter greater than an inner diameter of said shaft bore.
7. The corrosion resistant valve body of claim 2 wherein said sealing ring land inner annular surface is a conical surface, said conical surface being located at an angle between a cone centerline of the cone and an axial centerline of the body.
8. The corrosion resistant valve body of claim 1 wherein the axial centerline of said stem passageway is spaced 5mm from the longitudinal centerline of the body.
9. The corrosion resistant valve body of claim 1 wherein said body surface is coated with a corrosion resistant coating, said corrosion resistant coating being a novolac epoxy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922429624.6U CN211371317U (en) | 2019-12-30 | 2019-12-30 | Corrosion-resistant valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922429624.6U CN211371317U (en) | 2019-12-30 | 2019-12-30 | Corrosion-resistant valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211371317U true CN211371317U (en) | 2020-08-28 |
Family
ID=72169764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922429624.6U Active CN211371317U (en) | 2019-12-30 | 2019-12-30 | Corrosion-resistant valve body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211371317U (en) |
-
2019
- 2019-12-30 CN CN201922429624.6U patent/CN211371317U/en active Active
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