Centering and cooling equipment

Details Centering and cooling equipment Centering and cooling equipment

B - Operations, Transporting

25

D

138/40.11

B25D 9/12 (2006.01) B06B 1/18 (2006.01) F01B 11/06 (2006.01)

Patent

CA 1106730

ABSTRACT OF THE DISCLOSURE Centring and cooling equipment for a hydraulic vibration generator, with a pulsation generator pressurising a cylinder containing a movable piston, comprises a feed system and a flushing system. The feed system comprises spring-loaded n-on-return valves connecting a fluid reservoir to feed pipes connecting the pulsation generator to the cylinder chambers, and operates to supply cool pressure fluid from the reservoir when pressure in the cylinder chambers falls below a predeter- mined level. The flushing system comprises a control bush/ control plunger unit, bush and plunger of which are respective- ly connected to the piston and cylinder or vice versa, the plunger cooperating with channels in the bush to connect either feed pipe to a return passage according to the off-centre position of the plunger in the bush. This system operates to withdraw a quantity of heated pressure fluid, dependent on pressure and stroke, from the cylinder chambers with each piston stroke.

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