초록 ▼

Embodiments include a seal for a knife gate valve. The seal includes a seal body that comprises a top surface and a bottom surface, an inner surface of the seal body defines a gate aperture extending from the top surface to the bottom surface; and an insert disposed within the seal body, wherein the

Embodiments include a seal for a knife gate valve. The seal includes a seal body that comprises a top surface and a bottom surface, an inner surface of the seal body defines a gate aperture extending from the top surface to the bottom surface; and an insert disposed within the seal body, wherein the insert extends around at least a portion of the gate aperture and the insert is more rigid than the seal body; wherein an inner surface is nonlinear with at least one projection and at least one trough. Further embodiments include a knife gate valve. The knife gate valve can include a valve body that defines a flow aperture, the valve body configured to be coupled to a conduit; a gate disposed at least partially within the valve body and a seal disposed on top of the valve body. Other embodiments are also included herein.

대표청구항 ▼

1. A seal for a knife gate valve, comprising: a seal body that comprises a top surface and a bottom surface, an inner surface of the seal body defines a gate aperture extending from the top surface to the bottom surface; andan insert disposed within the seal body, wherein the insert extends around a

1. A seal for a knife gate valve, comprising: a seal body that comprises a top surface and a bottom surface, an inner surface of the seal body defines a gate aperture extending from the top surface to the bottom surface; andan insert disposed within the seal body, wherein the insert extends around at least a portion of the gate aperture and the insert is more rigid than the seal body;wherein the inner surface is nonlinear with at least one projection and at least one trough. 2. The seal for a knife gate valve according to claim 1, wherein the seal body defines at least one connector location. 3. The seal for a knife gate valve according to claim 1, wherein the seal body and insert define at least one connector location. 4. The seal for a knife gate valve according to claim 2, wherein the insert is completely surrounded by the seal body except for at any connector locations. 5. The seal for a knife gate valve according to claim 1, wherein over 90% but less than 100% of the insert is surrounded by the seal body. 6. The seal for a knife gate valve according to claim 1, wherein the insert comprises metal and the seal body comprises rubber or a polymer. 7. The seal for a knife gate valve according to claim 1, wherein the at least one trough is positioned between two projections. 8. The seal for a knife gate valve according to claim 1, wherein the trough is centered between the top surface and the bottom surface. 9. The seal for a knife gate valve according to claim 1, wherein the seal body is a substantially rectangular prism. 10. The seal for a knife gate valve according to claim 1, wherein the inner surface exhibits a sinusoidal shape. 11. A knife gate valve, comprising: a valve body that defines a flow aperture, the valve body configured to be coupled to a conduit;a gate disposed at least partially within the valve body, the gate configured to be moved vertically in relation to the valve body from a lowered position to a raised position, wherein when the gate is in a lowered position the gate substantially terminates flow through the flow aperture and when the gate is in a raised position flow is permitted through the flow aperture;a seal disposed on top of the valve body; the seal comprises: a seal body comprises a top surface, a bottom surface, and an inner surface, wherein the inner surface defines a gate aperture extending from the top surface to the bottom surface; andan insert disposed within the seal body, wherein the insert extends around at least a portion of the gate aperture and the insert is more rigid than the seal body;wherein at least a portion of the gate moves through the gate aperture when the gate is moved from the raised position to the lowered position or from the lowered position to the raised position. 12. The knife gate valve according to claim 11, wherein inner surface is nonlinear with at least one projection and at least one trough. 13. The knife gate valve according to claim 11, wherein the seal body defines at least one connector location. 14. The knife gate valve according to claim 11, wherein the seal body and insert define at least one connector location. 15. The knife gate valve according to claim 13, wherein the insert is completely surrounded by the seal body except for at any connector locations. 16. The knife gate valve according to claim 11, wherein over 90% of the insert is surrounded by the seal body. 17. The knife gate valve according to claim 11, wherein the insert comprises metal and the seal body comprises rubber or a polymer. 18. The knife gate valve according to claim 12, wherein the at least one trough is positioned between two projections. 19. The knife gate valve according to claim 12, wherein the trough is centered between the top surface and the bottom surface. 20. A knife gate valve, comprising: a valve body that defines a flow aperture, the valve body configured to be coupled to a conduit;a gate disposed at least partially within the valve body, the gate configured to be moved vertically in relation to the valve body from a lowered position to a raised position, wherein when the gate is in a lowered position the gate substantially terminates flow through the flow aperture and when the gate is in a raised position flow is permitted through the flow aperture;a flexible seal coupled to the valve body, wherein flexible the seal comprises: a seal body that comprises: a substantially flat top surface,a substantially flat bottom surface, andan inner surface that a gate aperture extending from the top surface to the bottom surface; anda metallic insert disposed within the flexible seal body, wherein the metallic insert extends around at least a portion of the gate aperture but does not form the gate aperature, and the insert is more rigid than the seal body;wherein a cross section of the inner surface taken from the top to the bottom of the seal body has a non-linear contact with at least one projection and at least one trough such that the open area defined by the inner surface is greater intermediate the top surface and bottom surface than it is intermediate the top and bottom surface;wherein at least a portion of the gate moves through the gate aperture when the gate is moved from the raised position to the lowered position or from the lowered position to the raised position;wherein the insert is completely surrounded by the flexible seal body except for at any connector locations on the top surface of the seal body; andwherein over 90% of the insert is surrounded by the flexible seal body.