Eccentric disc

A high-performance biitterllv valve has a disc that is offset from the shaft center line. This eccentricity causes the seating surface to move avv av from the seal once the disc is out of the closed position, reducing friction and seal vv ear. Also Icnovvn as an eccentric disc valve, its advantage is improved shutoff vvliile maintaining high ultimate capacity at a... 

Calcualtion of free cross-section surface of 4 1 single-, double- end triple-flighted twin screws " 7 (plus single-flighted twin screws assembled from eccentric discs)... 

The above equations represent a very simplified approach for simple conveying elements. For special mixing and dispersing elements such as kneading discs, eccentric discs or grooved elements, the approach must be expanded. A simple estimate is, however, possible. 

Erdmenger s patent for single-flighted and double-flighted self-cleaning kneading discs is considered to be the basic patent of the twin screw extruder. The patent describes the eccentric disc as well as the traditional profiles. 

An eccentric disc with a screw clearance smaller than the barrel clearance is described in this patent. This reduces the energy input. In addition, a jamming of granules between the eccentric disc and the barrel in the melting zone is avoided. 

Kneading is a double-disc screw, that is, an eccentric disc mounted on two shafts rotating in the same direction, the screws are water cooled. Feeding of kneader is continuous. I he water is thus separated from the material. 

Eccentric disc (Collyer and Clegg, 1988, Sundstrom and Burkett, 1981)... 

Figure 3.2 Schematic diagram showing the principal features of a parallel eccentric discs rotational viscometer.

Agitator discs are available is several forms smooth, perforated, eccentric, and pinned. Effect of disc design has received limited study, but pinned discs are usually reserved for highly viscous materials. 

This derivation makes a number of assumptions. Firstly, we assume that there is no disruption to the laminar flow pattern due to a finite disc surface, finite cell size, or eccentricity in disc rotation. To what extent design factors affect measured currents will be discussed further in the section on electrode construction. It is sufficient at this point to say that the criteria for negligible disruption can be met. 

There are several mechanisms by which wow can occur. One cause is a variation of rotational speed of the recording medium during either recording or playback. A further cause is eccentricity in the recording or playback process for disc and cylinder recordings, for example a hole which is not punched perfectly at the centre of a gramophone disc. Lastly it is possible for magnetic tape and optical film to become... 

Figure 2.10 Operating method of eccentric, synchronous, co-rotating, circular discs ...

The contents of this paper include, with variable emphasis, the topics of a series of lectures whose main title was Routes to Order Capture into resonance . This was indeed the subject of the last section above. The study of this subject has, however, shown that - unlike the restricted three-body problem - capture into resonance drives the system immediately to stationary solutions known as Apsidal corotations . The whole theory of these solutions was also included in the paper from the beginning - that is, from the formulation of the Hamiltonian equations of the planetary motions and the expansion of the disturbing function in the high-eccentricity planetary three-body problem. The secular theory of non-resonant systems was also given. Motions with aligned or anti-aligned periapses, resonant or not, resulting from non-conservative processes (tidal interactions with the disc) in the early phases of the life of the system, seem to be frequent in extra-solar planetary systems. 

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