CN218267272U - Stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve - Google Patents
Stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve Download PDFInfo
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- CN218267272U CN218267272U CN202222797584.2U CN202222797584U CN218267272U CN 218267272 U CN218267272 U CN 218267272U CN 202222797584 U CN202222797584 U CN 202222797584U CN 218267272 U CN218267272 U CN 218267272U
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Abstract
The utility model discloses a cascaded zero leaks corrosion-resistant lining fluorine butterfly valve, be equipped with the connection platform that corresponds the valve rod on its disk seat, connect the bench and have a mounting hole, the connection bench joint of mounting hole periphery has prevents leaking the flange, prevent leaking the flange and include the flange main part and set up respectively in two stereoplasm rings of flange main part internal periphery, the tip of valve rod has the shrink end, the junction of shrink end and valve rod forms the echelonment structure, has the corresponding concave ring who prevents leaking the flange on the terminal surface of echelonment structure, the shrink end inserts in the mounting hole, prevent that the leakage flange inserts in the concave ring, the utility model discloses a sealed more reliable, and sealed the influence of opening and close the butterfly valve is little.
Description
Technical Field
The utility model relates to a cascaded zero leaks corrosion-resistant lining fluorine butterfly valve.
Background
The patent with the publication number of CN204083277U discloses a stepped zero-leakage fluorine-lined butterfly valve, wherein a butterfly plate is provided with a cylindrical structure which is abutted against a valve seat at two ends of an upper valve rod and a lower valve rod, and the two connecting parts are sealed by matching two O-shaped sealing rings.
Because the valve rod needs to drive the butterfly plate to rotate, the setting of two O-shaped sealing rings can lead to the unsmooth rotation of the valve rod, the opening and closing of the butterfly valve can be influenced, and on the other hand, the sealing ring structure is still easy to wear and is not reliable enough in sealing.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of above-mentioned prior art, provide a sealed more reliable, and sealed open and close the cascaded zero that influences little and leak corrosion-resistant lining fluorine butterfly valve to the butterfly valve.
The technical scheme of the utility model is that: a step type zero-leakage corrosion-resistant fluorine-lined butterfly valve comprises a valve body, a valve seat, a butterfly plate and a valve rod, wherein the valve seat is of a fluoroplastic integrated structure, fluoroplastic layers are coated on the butterfly plate and the valve rod, a connecting table corresponding to the valve rod is arranged on the valve seat, an installation hole is formed in the connecting table, a leakage-proof flange is fixed on the connecting table at the periphery of the installation hole, a contraction end is arranged at the end part of the valve rod, a step type structure is formed at the joint of the contraction end and the valve rod, a concave ring corresponding to the leakage-proof flange is arranged on the end surface of the step type structure, the contraction end is inserted into the installation hole, and the leakage-proof flange is inserted into the concave ring;
the anti-leakage flange comprises a flange main body and two hard rings arranged on the inner periphery of the flange main body respectively, the top end of each hard ring and the top end of the flange main body keep an interval, the top end of the flange main body is provided with a circle of arc-shaped groove, the flange main bodies on two sides of the arc-shaped groove are respectively provided with a slope surface, the slope surfaces and the inner periphery and the outer periphery of the flange main body are respectively in arc-shaped transitional connection, the hard rings are respectively abutted to the inner side wall and the outer side wall of the concave ring, and the top end of the flange main body is abutted to the top wall in the concave ring.
Specifically, connect the platform and be the disc body, connect platform and disk seat structure as an organic whole.
Specifically, the valve rod includes valve rod and lower valve rod, connect the platform including last connection platform and lower connection platform, go up the connection platform and connect the bench down and all be provided with and prevent leaking the flange.
Further, two still have the snap ring on the stereoplasm ring respectively, flange main part and stereoplasm ring are glued as an organic wholely, connect the bench and have the mounting groove that corresponds and prevent leaking the flange, the draw-in groove that has corresponding snap ring in the mounting groove, prevent leaking the flange joint in the mounting groove.
Furthermore, a rubber pad is arranged between the valve cavity in the valve seat and the valve body, and a hard cushion block is arranged between the valve seat and the rubber pad corresponding to the position of the connecting table.
Furthermore, still have an extension cover on the upper junction platform, the upper end of extension cover extends to filler department, the top of the fluoroplastics layer on the upper valve rod is flushed mutually with the top of extension cover.
The valve cover is fixed on the top of the valve body and seals the filler, the top end of the extension sleeve and the top end of the fluoroplastic layer of the upper valve rod.
Furthermore, a support is fixed above the valve cover.
Furthermore, the upper valve rod penetrates out of the support, and a handle is fixed at the top of the upper valve rod.
The utility model has the advantages that: in the utility model, the valve seat and the butterfly plate of the fluoroplastic integrated structure and the fluoroplastic layer coated on the valve rod can effectively improve the corrosion resistance of the valve body; the valve rod is connected with the connecting platform on the valve seat through a step-shaped structure, so that the medium can be reduced to pass through the valve body through the connecting seam, and the sealing property of the valve body is improved;
the anti-leakage flange arranged on the connecting platform is matched with the concave ring on the end surface of the stepped structure to seal the joint of the valve rod and the connecting platform, so that the sealing performance of the joint of the valve rod and the connecting platform is ensured, the leakage is avoided, and zero leakage is realized; the hard rings are made of fluoroplastic materials and are used for supporting the flange main body, and the inner periphery and the outer periphery of the concave ring are respectively abutted with the two hard rings, so that the rotation of the valve rod cannot be influenced, the friction surfaces of the flange main body and the concave ring are reduced, and the service life of the flange main body is prolonged; and the structural design of the top of the flange main body enables the flange main body and the top wall in the concave ring to form two seals, and the sealing performance of the part is improved on the premise of reducing friction with the concave ring.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the leakage-proof flange of the present invention;
fig. 3 is a top view of the connection platform of the present invention.
In the figure: the valve comprises a valve body 1, a valve seat 2, a butterfly plate 3, a fluoroplastic layer 5, a connecting table 6, a mounting hole 7, a leakage-proof flange 8, a stepped structure 9, a concave ring 10, a flange main body 11, a hard ring 12, an arc-shaped groove 13, an upper valve rod 14, a lower valve rod 15, a snap ring 16, a rubber pad 17, a hard cushion block 18, an extension sleeve 19, a filler 20, a valve cover 21, a support 22 and a handle 23.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Referring to fig. 1-3, a stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve comprises a valve body 1, a valve seat 2, a butterfly plate 3 and a valve rod, wherein the valve seat 2 is of a fluoroplastic integrated structure, and the butterfly plate 3 and the valve rod are coated with a fluoroplastic layer 5;
a connecting table 6 corresponding to the valve rod is arranged on the valve seat 2, a mounting hole 7 is formed in the connecting table 6, a leakage-proof flange 8 is fixed on the connecting table 6 at the periphery of the mounting hole 7, a contraction end is arranged at the end part of the valve rod, a stepped structure 9 is formed at the joint of the contraction end and the valve rod, a concave ring 10 corresponding to the leakage-proof flange 8 is arranged on the end surface of the stepped structure 9, the contraction end is inserted into the mounting hole 7, and the leakage-proof flange 8 is inserted into the concave ring 10;
the anti-leakage flange 8 comprises a flange main body 11 and two hard rings 12 arranged on the inner periphery of the flange main body 11 respectively, the top end of each hard ring 12 is spaced from the top end of the flange main body 11, the top end of the flange main body 11 is provided with a circle of arc-shaped groove 13, the flange main bodies 11 on two sides of each arc-shaped groove 13 are respectively provided with a slope surface, the slope surfaces are in arc-shaped transitional connection with the inner periphery and the outer periphery of the flange main body 11 respectively, the hard rings 12 are abutted against the inner side wall and the outer side wall of the concave ring 10 respectively, and the top end of the flange main body 11 is abutted against the top wall in the concave ring 10.
In the structure, the valve seat 2, the butterfly plate 3 and the fluoroplastic layer 5 coated on the valve rod which are of the fluoroplastic integrated structure can effectively improve the corrosion resistance of the valve body 1; the valve rod is connected with the connecting platform 6 on the valve seat 2 through a step-shaped structure, so that the medium can be reduced to pass through the valve body 1 through the connecting seam, and the sealing property of the valve body 1 is improved;
the anti-leakage flange 8 arranged on the connecting platform 6 is matched with the concave ring 10 on the end face of the stepped structure 9 to seal the joint of the valve rod and the connecting platform 6, so that the sealing performance of the joint of the valve rod and the connecting platform 6 is ensured, and the leakage is avoided to realize zero leakage; the hard rings 12 are made of fluoroplastic materials and are used for supporting the flange main body 11 on one hand, and the inner periphery and the outer periphery of the concave ring 10 are respectively abutted to the two hard rings 12 on the other hand, so that the rotation of the valve rod cannot be influenced, the friction surfaces of the flange main body 11 and the concave ring 10 are reduced, and the service life of the flange main body 11 is prolonged; the structural design of the top of the flange main body 11 enables the flange main body and the top wall in the concave ring 10 to form two seals, and the sealing performance of the part is improved on the premise of reducing friction with the concave ring 10; the design of the slope surface and the arc transition angle at the top of the flange main body 11 are convenient for matching with the concave hole, and the installation is convenient.
In another embodiment, as shown in fig. 3, the connecting table 6 is a circular disk body, and the connecting table 6 and the valve seat 2 are integrally formed.
In another embodiment, as shown in fig. 1, the valve stem comprises an upper valve stem 14 and a lower valve stem 15, the connecting table 6 comprises an upper connecting table 6 and a lower connecting table 6, and the upper connecting table 6 and the lower connecting table 6 are both provided with leakage-proof flanges 8.
In another embodiment, as shown in fig. 2, two of the hard rings 12 further have snap rings 16 thereon, the flange body 11 and the hard rings 12 are glued together, the connection platform 6 has a mounting groove corresponding to the leakage-proof flange 8, a snap groove corresponding to the snap ring 16 is provided in the mounting groove, and the leakage-proof flange 8 is snapped in the mounting groove, so as to facilitate the assembly of the leakage-proof flange 8.
In another embodiment, as shown in fig. 1, a rubber pad 17 is further disposed between the valve seat 2 and the valve cavity in the valve body 1, and a hard cushion block 18 is further disposed between the valve seat 2 and the rubber pad 17 corresponding to the connecting table 6, so as to improve the cushioning capacity of the entire valve seat 2, and further improve the impact resistance of the valve seat 2, so that the valve seat 2 can maintain good sealing performance.
In another embodiment, as shown in fig. 1, the upper connecting platform 6 further has an extension sleeve 19, the upper end of the extension sleeve 19 extends to the packing 20, and the top of the fluoroplastic layer 5 on the upper valve stem 14 is flush with the top of the extension sleeve 19, so as to improve the sealing performance at the joint of the upper valve stem 14 and the valve body 1.
In another embodiment, as shown in fig. 1, the valve further comprises a valve cover 21, wherein the valve cover 21 is provided with a through hole corresponding to the upper valve stem 14, and the valve cover 21 is fixed on the top of the valve body 1 and seals the packing 20, the top end of the extension sleeve 19 and the top end of the fluoroplastic layer 5 of the upper valve stem 14.
In another embodiment, as shown in fig. 1, a bracket 22 is further fixed above the valve cover 21, the upper valve stem 14 passes through the bracket 22, and a handle 23 is fixed on the top of the upper valve stem.
Claims (9)
1. The stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve comprises a valve body (1), a valve seat (2), a butterfly plate (3) and a valve rod, wherein the valve seat (2) is of a fluoroplastic integrated structure, the butterfly plate (3) and the valve rod are coated with fluoroplastic layers (5), and the stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve is characterized in that a connecting table (6) corresponding to the valve rod is arranged on the valve seat (2), a mounting hole (7) is formed in the connecting table (6) at the periphery of the mounting hole (7), a leakage-resistant flange (8) is fixed on the connecting table (6), a contraction end is arranged at the end part of the valve rod, a stepped structure (9) is formed at the joint of the contraction end and the valve rod, a concave ring (10) corresponding to the leakage-resistant flange (8) is arranged on the end surface of the stepped structure (9), the contraction end is inserted into the mounting hole (7), and the leakage-resistant flange (8) is inserted into the concave ring (10);
prevent leaking flange (8) including flange main part (11) and set up two stereoplasm rings (12) in flange main part (11) inner periphery respectively, the top of stereoplasm ring (12) and the top of flange main part (11) keep the interval, the top of flange main part (11) has round arc wall (13), flange main part (11) of arc wall (13) both sides still has a slope respectively, two the arc transitional coupling is distinguished to the inside and outside week of slope and flange main part (11), two stereoplasm ring (12) respectively with the inside and outside lateral wall butt of concave ring (10), the top of flange main part (11) and the roof looks butt in concave ring (10).
2. The stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve according to claim 1, wherein the connecting table (6) is a disk body, and the connecting table (6) and the valve seat (2) are of an integrally formed structure.
3. A stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve according to claim 2, wherein the valve rod comprises an upper valve rod (14) and a lower valve rod (15), the connection table (6) comprises an upper connection table (6) and a lower connection table (6), and the upper connection table (6) and the lower connection table (6) are provided with leakage-resistant flanges (8).
4. The stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve according to claim 3, wherein the two hard rings (12) are respectively provided with a snap ring (16), the flange body (11) and the hard rings (12) are glued into a whole, the connecting table (6) is provided with a mounting groove corresponding to the leakage-proof flange (8), a clamping groove corresponding to the snap ring (16) is arranged in the mounting groove, and the leakage-proof flange (8) is clamped in the mounting groove.
5. A stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve according to claim 4, characterized in that a rubber gasket (17) is further arranged between the valve seat (2) and the valve cavity in the valve body (1), and a hard cushion block (18) is further arranged between the valve seat (2) and the rubber gasket (17) corresponding to the position of the connecting table (6).
6. A stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve according to claim 5, wherein said upper connection table (6) further comprises an extension sleeve (19), the upper end of said extension sleeve (19) extends to the position of the packing (20), and the top of the fluoroplastic layer (5) on said upper valve stem (14) is flush with the top of the extension sleeve (19).
7. A stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve according to claim 6, further comprising a valve cover (21), wherein the valve cover (21) is provided with a through hole corresponding to the upper valve rod (14), and the valve cover (21) is fixed on the top of the valve body (1) and seals the packing (20), the top end of the extension sleeve (19) and the top end of the fluoroplastic layer (5) of the upper valve rod (14).
8. The stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve according to claim 7, wherein a bracket (22) is further fixed above the valve cover (21).
9. The stepped, zero-leakage, corrosion-resistant, fluorine-lined butterfly valve of claim 8, wherein said upper stem (14) extends through said support (22) and has a handle (23) secured to the top thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222797584.2U CN218267272U (en) | 2022-10-24 | 2022-10-24 | Stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222797584.2U CN218267272U (en) | 2022-10-24 | 2022-10-24 | Stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218267272U true CN218267272U (en) | 2023-01-10 |
Family
ID=84752804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222797584.2U Active CN218267272U (en) | 2022-10-24 | 2022-10-24 | Stepped zero-leakage corrosion-resistant fluorine-lined butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218267272U (en) |
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2022
- 2022-10-24 CN CN202222797584.2U patent/CN218267272U/en active Active
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