CN215861794U - Low-temperature butterfly valve - Google Patents
Low-temperature butterfly valve Download PDFInfo
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- CN215861794U CN215861794U CN202122226733.5U CN202122226733U CN215861794U CN 215861794 U CN215861794 U CN 215861794U CN 202122226733 U CN202122226733 U CN 202122226733U CN 215861794 U CN215861794 U CN 215861794U
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Abstract
The utility model relates to a low-temperature butterfly valve, which comprises a valve body; the flanges are connected to the two sides of the valve body; a butterfly plate; a valve stem; the annular sealing ring is positioned on the outer side of the butterfly plate; further comprising: the first sealing inclined plane is positioned on the outer side of the annular sealing ring; the first annular groove is formed in the inner wall of the valve body and provided with a second annular sealing ring, the second annular sealing ring is clamped on the annular groove, and a second sealing inclined surface is arranged on the inner circular surface of the second annular sealing ring; a compensation mechanism; the first sealing inclined plane and the second sealing inclined plane are matched for sealing, and the compensation mechanism is respectively arranged between the butterfly plate and the valve rod and between the second annular sealing ring and the pressing ring and is used for pushing the butterfly plate and the second annular sealing ring to enable the butterfly plate and the second annular sealing ring to move relatively. The utility model has the beneficial effects that: the sealing performance of the first annular sealing ring and the second annular sealing ring is improved better by arranging the compensation mechanism, and the sealing effect is good.
Description
Technical Field
The utility model relates to the technical field of butterfly valves, in particular to a low-temperature butterfly valve.
Background
The utility model discloses a No. CN201821710252.3 discloses a low temperature resistant butterfly valve, including valve body, gland, butterfly plate, valve rod, its characterized in that, the butterfly plate is installed inside the valve body, the gland sets up in the valve body upper end, the valve rod runs through gland and valve body upper end in proper order, and with the lateral wall of butterfly plate passes through locking bolt fixed connection, be provided with the sealing shaft sleeve between gland and the valve body, the valve rod passes this sealing shaft sleeve, be provided with the sealing filler between gland and the valve rod, be equipped with the arrangement groove on the valve plate arc outside terminal surface, install the sealing washer on the arrangement groove, be equipped with the elastic alloy sealing ring with the sealing washer looks adaptation on the inside inner wall of valve body, realize sealed through elastic alloy sealing ring and sealing washer lateral wall are inconsistent, but when receiving the low temperature influence, elastic sealing ring radial dimension can change, the gap is easy to appear between the sealing ring and the sealing ring, and the sealing effect is general.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a low-temperature butterfly valve to solve the problems.
The technical scheme of the utility model is realized as follows: a low-temperature butterfly valve comprises a butterfly valve body,
a valve body;
the flanges are connected to the two sides of the valve body;
a butterfly plate;
a valve stem;
the annular sealing ring is positioned on the outer side of the butterfly plate;
further comprising:
the first sealing inclined plane is positioned on the outer side of the annular sealing ring;
the first ring groove is formed in the inner wall of the valve body;
the second annular sealing ring is clamped on the annular groove, and a second sealing inclined plane is arranged on the inner annular surface of the second annular sealing ring;
a compensation mechanism;
the first sealing inclined plane and the second sealing inclined plane are matched for sealing, and the compensation mechanism is respectively arranged between the butterfly plate and the valve rod and between the second annular sealing ring and the pressing ring and is used for pushing the butterfly plate and the second annular sealing ring to enable the butterfly plate and the second annular sealing ring to move relatively.
Through adopting above-mentioned technical scheme, make first ring type seal and second ring type seal removal compensation through setting up compensation mechanism, reach better self sealss effect.
The utility model is further configured to: the compensation mechanism includes:
two first sleeves are arranged and are fixedly arranged on the outer side wall of the valve rod along the height direction of the valve rod;
the second sleeve is positioned in the first sleeve;
the groove is formed in one side, facing the valve rod, of the butterfly plate;
the second annular groove is formed in the groove wall of one side, far away from the valve rod, of the first annular groove;
the air pump is positioned at the upper end of the valve body and is provided with two air outlet pipes;
the groove is opposite to the first sleeve, one end of the second sleeve, which is away from the valve rod, is in butt sealing connection with the bottom of the groove, the second sleeve is in movable sealing connection with the first sleeve, one end of one air outlet pipe penetrates through the valve rod and is communicated with the inside of the first sleeve, and the other air outlet pipe penetrates through the valve body and is communicated with the second annular groove.
Through adopting above-mentioned technical scheme, after the valve rod drove the butterfly plate and is close to second ring shaped seal circle and close, the air pump was opened, through adjusting atmospheric pressure, made the ascending butterfly plate of the atmospheric pressure in first sleeve pipe and the second sleeve pipe drive the promotion of second ring shaped seal circle, the second ring shaped seal circle of pushing down of second ring shaped seal circle in the second ring groove internal gas pressure rises and impels to first ring shaped seal circle, made first sealing washer and second ring shaped seal circle's sealed inclined plane paste tight seal each other, sealed effectual.
The utility model is further configured to: an annular elastic sheet is arranged in the second annular groove, the cross section of the annular elastic sheet is Z-shaped, two ends of the annular elastic sheet respectively abut against the bottom of the second annular groove and the side wall of the second annular sealing ring, and a vent hole is formed in the middle of the annular elastic sheet.
Through adopting above-mentioned technical scheme, through setting up the annular shell fragment of "Z" font, can force second annular seal circle to compress tightly on first annular seal circle, and through seting up the through-hole on the annular shell fragment, make annular shell fragment both sides atmospheric pressure balance, make second annular seal circle can the even atress.
The utility model is further configured to: and a return spring is fixedly arranged at one end of the second sleeve, which is away from the butterfly plate, and the other end of the return spring is propped against the valve rod.
Through adopting above-mentioned technical scheme, through setting up the spring, the spring also can force the second sleeve pipe to remove and drive first sealing washer and compress tightly on second annular sealing washer, has further improved sealed effect.
The utility model is further configured to: a corrugated sleeve is fixedly and hermetically connected between the groove notch and the valve rod.
Through adopting above-mentioned technical scheme, through setting up the ripple sleeve pipe, prevent that the medium corrodes first sleeve pipe and second sleeve pipe in the valve body, prolonged life.
The utility model is further configured to: further comprising:
the stepped surface is positioned on the inner wall of the valve body;
the compression ring is connected to the stepped surface through a plurality of screws;
wherein, clamping ring one end offsets with the one side that second annular seal deviates from the valve rod.
Through adopting above-mentioned technical scheme, through setting up the clamping ring, the clamping ring is fixed on the ladder face through a plurality of screws, and stable in structure is difficult not hard up.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a cross-sectional view of a valve body according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of an embodiment A of the present invention;
fig. 3 is a partially enlarged view of embodiment B of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the present invention discloses a low temperature butterfly valve, including,
a valve body 1;
the flange 2 is connected to two sides of the valve body;
a butterfly plate 3;
a valve stem 4;
the first annular sealing ring 4 is arranged at the outer side of the butterfly plate 3;
further comprising:
the first sealing inclined surface 5 is positioned on the outer side of the annular sealing ring 4;
a first ring groove 6, the first ring groove 6 is arranged on the inner wall of the valve body 1
The second annular sealing ring 41 is clamped on the annular groove 6, and a second sealing inclined surface 51 is arranged on the inner annular surface of the second annular sealing ring 41;
a compensation mechanism;
the first sealing inclined surface 5 and the second sealing inclined surface 51 are matched for sealing, and the compensation mechanism is respectively arranged between the butterfly plate 3 and the valve rod 4 and between the second annular sealing ring 41 and the pressing ring 7 and is used for pushing the butterfly plate 3 and the second annular sealing ring 5 to enable the butterfly plate and the second annular sealing ring 5 to move relatively.
Through adopting above-mentioned technical scheme, make first ring type seal and second ring type seal removal compensation through setting up compensation mechanism, reach better self sealss effect.
In an embodiment of the present invention, the compensation mechanism includes:
two first sleeves 8 are arranged, and the two first sleeves 8 are fixedly arranged on the outer side wall of the valve rod 4 along the height direction of the valve rod 4;
a second sleeve 81, the second sleeve 81 being located within the first sleeve 8;
a groove 82, wherein the groove 82 is formed on one side of the butterfly plate 3 facing the valve rod 4;
the second annular groove 9 is formed in the groove wall of the first annular groove 6, which is far away from the valve rod 4;
the air pump is positioned at the upper end of the valve body 1 and is provided with two air outlet pipes 10;
the groove 82 is opposite to the first sleeve 8, one end of the second sleeve 81, which is far away from the valve rod 4, is in abutting sealing connection with the groove bottom of the groove 82, the second sleeve 81 is in movable sealing connection with the first sleeve 8, one end of one of the air outlet pipes 10 penetrates through the valve rod 4 and is communicated with the inside of the first sleeve 8, and the other air outlet pipe 10 penetrates through the valve body 1 and is communicated with the second annular groove 9.
Through adopting above-mentioned technical scheme, after the valve rod drove the butterfly plate and is close to second ring shaped seal circle and close, the air pump was opened, through adjusting atmospheric pressure, made the ascending butterfly plate of the atmospheric pressure in first sleeve pipe and the second sleeve pipe drive the promotion of second ring shaped seal circle, the second ring shaped seal circle of pushing down of second ring shaped seal circle in the second ring groove internal gas pressure rises and impels to first ring shaped seal circle, made first sealing washer and second ring shaped seal circle's sealed inclined plane paste tight seal each other, sealed effectual.
In the embodiment of the utility model, an annular elastic sheet 11 is arranged in the second annular groove 9, the section of the annular elastic sheet 11 is in a Z shape, two ends of the annular elastic sheet 11 are respectively abutted against the bottom of the second annular groove 9 and the side wall of the second annular sealing ring 41, and a vent hole is formed in the middle of the annular elastic sheet 11.
Through adopting above-mentioned technical scheme, through setting up the annular shell fragment of "Z" font, can force second annular seal circle to compress tightly on first annular seal circle, and through seting up the through-hole on the annular shell fragment, make annular shell fragment both sides atmospheric pressure balance, make second annular seal circle can the even atress.
In the embodiment of the utility model, one end of the second sleeve 81, which is far away from the butterfly plate 3, is fixedly provided with the return spring 12, and the other end of the return spring 12 abuts against the valve rod 4.
Through adopting above-mentioned technical scheme, through setting up the spring, the spring also can force the second sleeve pipe to remove and drive first sealing washer and compress tightly on second annular sealing washer, has further improved sealed effect.
In the embodiment of the utility model, a corrugated sleeve 13 is fixedly and hermetically connected between the groove 82 and the valve rod 4.
Through adopting above-mentioned technical scheme, through setting up the ripple sleeve pipe, prevent that the medium corrodes first sleeve pipe and second sleeve pipe in the valve body, prolonged life.
In the embodiment of the present invention, the method further includes:
the stepped surface is positioned on the inner wall of the valve body 1;
the pressing ring 14 is connected to the stepped surface through a plurality of screws;
wherein, clamping ring 14 one end offsets with the one side that second ring seal 41 deviates from valve rod 4.
Through adopting above-mentioned technical scheme, through setting up the clamping ring, the clamping ring is fixed on the ladder face through a plurality of screws, and stable in structure is difficult not hard up.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A low-temperature butterfly valve comprises a butterfly valve body,
a valve body (1);
the flange (2), the flange (2) is connected to both sides of the valve body;
a butterfly plate (3);
a valve stem (4);
the annular sealing ring (4) is positioned on the outer side of the butterfly plate (3);
it is characterized by also comprising:
the first sealing inclined surface (5), the first sealing inclined surface (5) is positioned on the outer side of the annular sealing ring (4);
the first ring groove (6), the first ring groove (6) is opened on the inner wall of the valve body (1);
the second annular sealing ring (41), the second annular sealing ring (41) is clamped on the annular groove (6), and a second sealing inclined surface (51) is arranged on the inner circular surface of the second annular sealing ring (41);
a compensation mechanism;
the first sealing inclined surface (5) and the second sealing inclined surface (51) are matched for sealing, and the compensation mechanism is respectively arranged between the butterfly plate (3) and the valve rod (4) and between the second annular sealing ring (41) and the pressing ring (7) and is used for pushing the butterfly plate (3) and the second annular sealing ring (41) to enable the butterfly plate and the second annular sealing ring to move relatively.
2. The cryogenic butterfly valve of claim 1, wherein the compensating mechanism comprises:
two first sleeves (8) are arranged, and the two first sleeves (8) are fixedly arranged on the outer side wall of the valve rod (4) along the height direction of the valve rod (4);
a second sleeve (81), the second sleeve (81) being located within the first sleeve (8);
the groove (82), the groove (82) is opened on one side of the butterfly plate (3) facing the valve rod (4);
the second ring groove (9), the second ring groove (9) is opened on the groove wall of one side of the first ring groove (6) far away from the valve rod (4);
the air pump is positioned at the upper end of the valve body (1) and is provided with two air outlet pipes (10);
the groove (82) and the first sleeve (8) are oppositely arranged, one end, deviating from the valve rod (4), of the second sleeve (81) is in butt sealing connection with the groove bottom of the groove (82), the second sleeve (81) is in movable sealing connection with the first sleeve (8), one end of one air outlet pipe (10) penetrates through the valve rod (4) and is communicated with the inside of the first sleeve (8), and the other air outlet pipe (10) penetrates through the valve body (1) and is communicated with the second annular groove (9).
3. The low-temperature butterfly valve according to claim 2, wherein an annular elastic sheet (11) is arranged in the second ring groove (9), the section of the annular elastic sheet (11) is Z-shaped, two ends of the annular elastic sheet (11) respectively abut against the bottom of the second ring groove (9) and the side wall of the second annular sealing ring (41), and a vent hole is formed in the middle of the annular elastic sheet (11).
4. The cryogenic butterfly valve of claim 2, wherein: one end of the second sleeve (81) departing from the butterfly plate (3) is fixedly provided with a return spring (12), and the other end of the return spring (12) is abutted to the valve rod (4).
5. The cryogenic butterfly valve of claim 2, wherein: a corrugated sleeve (13) is fixedly and hermetically connected between the notch of the groove (82) and the valve rod (4).
6. The cryogenic butterfly valve of claim 1, further comprising:
the stepped surface is positioned on the inner wall of the valve body (1);
the pressing ring (14), the pressing ring (14) is connected to the stepped surface through a plurality of screws;
wherein, clamping ring (14) one end offsets with the one side that second annular seal ring (41) deviates from valve rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122226733.5U CN215861794U (en) | 2021-09-14 | 2021-09-14 | Low-temperature butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122226733.5U CN215861794U (en) | 2021-09-14 | 2021-09-14 | Low-temperature butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861794U true CN215861794U (en) | 2022-02-18 |
Family
ID=80320266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122226733.5U Active CN215861794U (en) | 2021-09-14 | 2021-09-14 | Low-temperature butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861794U (en) |
-
2021
- 2021-09-14 CN CN202122226733.5U patent/CN215861794U/en active Active
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