Spacer plates

Ptdp) filtei. s. These filters employ one or more packs of filtermasse (cellulose fibers compressed to a compact cylinder) stacked into a pressure case. The packs are sometimes supported in individual trays which provide drainage channels and sometimes rest on one another with a loose spacer plate between each two packs and with a drainage screen buried in the center of each pack. The liquid being clarified flows under a pressure of 345 kPa (50 psig) or less through the pulp packs and into a drainage manifold. Flow rates are somewhat less than for disk filters, on the order of 20 L/(min-m ) [0.5 gal/ (min-ft")]. Pulp filters are used chiefly to polish beverages. The filtermasse may be washed in special washers and re-formed into new cakes. 

Spacer Plates. Spacer plates of traveling blocks, not specifically designed to lend support to the sheave pin, shall not be considered in calculating the rated capacity of the block. 

Figure 3.39 Schematic of a plate-and-frame module. Plate-and-frame modules provide good flow control on both the permeate and feed side of the membrane, but the large number of spacer plates and seals lead to high module costs. The feed solution is directed across each plate in series. Permeate enters the membrane envelope and is collected through the central permeate collection channel [111]...

Figure 1. The MHHP modular sorber diagram 1 - tubular case of the hydride module 2 -corrugated heat-conducting insert 3 - hydrogen ceramic collector-filter 4 - metal hydride 5 - tip of a metal hydride bed 6 - hydrogen manifold 7 - spacer plate 8 - heat exchanger shroud 9 - union 10 - flange-cover of a heat exchanger. Heat exchanger thermal insulation is not shown conditionally.

Injection moulding of support and spacer plates makes a low-cost, large-scale production method possible. 

We made the flow-through chip as a flow cell reactor by constructing two acrylic plates (5 cm X 3 cm)) and a spacer plate (5 cm x 3 cm x 1.5 mm) with a window (cell volume 1.35 xlO m ). Two ports connecting to Teflon mbes (0.5 mm i.d.) as a inlet and outlet tube was set at the window site on the lower plate, respectively. HRP was immobilized between the two ports at the lower plate after constructing the silica layer (3x5 mm). 

Equipment. 5 glass backing plates (20 x 20 cm), adjustable gate applicator, 2 glass spacer plates (5 x 20 cm), Kieselgel 60 (45 g) Merck 7749, plate holder, silver nitrate (1 g) (optional), TLC plate coater, distilled water (90 mL), 200-mL conical flask, and stopper. 

Place the plates into the TLC plate coater with spacer plates at either end. Adjust the applicator to the correct plate thickness required (0.5 mm in this case) and place at one end on the spacer plate. 

Figure 1.7 (a) Typical cross section and (b) right end portion of longitudinal section, where UC and LC are for upper and lower chords with two U channel sections, DT and DF are for diagonal tubes in compression and diagonal flat sections in tension, PT is for vertical posts, Tl is for transverse I beams between joints and TC for transverse beams with two U channel sections at joints, and SF is for spacer plates with flat sections [14]. (With permission from ASCE.)... 

Fig. 23. Schematic of plate-and-frame module system. This design has good flow control, but the large number of spacer plates and seals leads to high costs.

A manifold is usually installed in a recess in the spacer plate with a gap of about 10-20 mm at the side to locate protruding components of the manifold and to run leads. In the case of a large manifold, though, a more economic solution is to locate it between the risers. This does away with the need to mill a recess for the manifold, but at the cost of a diminution in mould rigidity. As a result, the most common solution is to create a recess in the plate matching the shape of the manifold (see Figure 4.88). 

Figure 4.88 Shape of recess in spacer plate precisely adapted to shape of manifold Reproduced with permission from Husky Injection Moulding Systems Limited)...

The height of the spacer plate must be adapted to the height of the HR system so as to ensure the initial clamping of manifold and nozzles (see Chapter 4.2.1.2). 

Figure 4 shows the schematics of the test specimen. Spacer plates in between two stainless disks were used to create narrow gaps. The thickness of the plates was 2 mm and the diameter was 20 mm. The gaps were varied by the thickness of the spacer plates. The diameter of the spacer was 10 mm. The two plates and the spacer are all fixed together by M5 bolt and nut... 

Clear spacer plates microtiter styrene flat-bottom plates (Dynex 9205 or Polyfiltronics... 

Place the sample plates separated by clear spacer plates (and a stop plate see manufacturer s instructions) in the scintillation counter. Several laboratories (J. Hall, S. Kay, P. Hardin, R. Stanewsky, A. Sehgal) use a Packard TopCount bioluminescence/scintilla-tion counter. 

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