Unlock instant, AI-driven research and patent intelligence for your innovation.

Rotary seal

A technology of seals and slots, applied in the field of seals, can solve the problem of no control of cooling capacity

Inactive Publication Date: 2009-07-08
EQUSR CHEM LP +1
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This same prior art uses only a substantially right-angled cross-section push-back slot that will capture and hold lost polymer in its sharp, right-angled corners until the captured polymer is baked substantially solid because the shell There is generally no controlled cooling capacity over a significant portion of the body length, particularly in the length of the shell closest to the heat-treated end of the seal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotary seal
  • Rotary seal
  • Rotary seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] For simplicity and clarity, the invention will be described in terms of apparatus for mixing and / or extruding hot, viscous polymeric materials. However, the present invention is not so limited and may be used in any situation where dynamic sealing of hot, viscous materials is required.

[0023] For simplicity and clarity, the invention will also be described in terms of utilizing a coolant fluid to cool the housing, but the invention is not limited to coolant fluids and other types of fluids may be used.

[0024] Accordingly, the present invention provides a seal housing having an internal first, second and third transverse slot arrangement (combination) with interconnected holes which will, for example, be in such a controlled manner to cool substantially the entire length of the housing such that the temperature gradient in the longitudinal length of the housing is from the process side of the seal (the side inside the device (machine)) to the ambient atmosphere (air)...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A rotary seal housing having opposing ends (43, 44), a first fluid conducting slot (71) at one of the opposing ends, a pair of spaced apart fluid conducting slots (60, 61) at the other opposing end, and sets of apertures (64) connecting the first fluid conducting slot (71) with the pair of fluid conducting slots (60,61), the housing having helical push back grooves that are arcuate in cross-section.

Description

technical field [0001] This invention relates to seals for rotor sealing systems, in particular for machines handling hot, viscous materials. Background technique [0002] To date, machines for handling viscous fluids, such as molten polymer mixers, have used seals (more on this later) with a wind back groove on a rotating shaft carried on a smooth, stationary Inside the shell. These push-back slots are essentially right angles (square or rectangular) in cross-section and are designed to push back into the mixing device any polymer that is pressed between the rotating shaft and the stationary housing on the process end of the seal and away from the process end of the seal (inside the device) towards the atmospheric end of the same seal (outside the device). Occasionally, this stray polymer may overcome the push-back action around the groove, run the length of the seal, and escape in an uncontrolled manner into the ambient atmosphere outside the device. [0003] Such prior...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/40B29C47/08B29C48/03B29C48/395
CPCB29C47/0009B29C47/38F16J15/403B29C47/404F16J15/406B29C47/0808B29C48/03B29C48/254B29C48/395B29C48/404
Inventor D·T·莫尔德特J·E·泰勒S·塞拉尼
Owner EQUSR CHEM LP