Piston-driven positive displacement pump

Abstract

In an embodiment of the present invention a pump ( 100 ) is disclosed which comprises a head ( 110 ), in which at least a cylinder is fashioned in which a piston ( 105 ) is slidably housed, and a casing ( 145 ) fixed to the head ( 110 ), which defines an internal volume in which a crankshaft ( 150 ) and at least a conrod ( 155 ) are housed, which at least a conrod ( 155 ) connects the crankshaft ( 150 ) with the piston ( 105 ), such as to be able to transform a rotary motion of the crankshaft ( 150 ) into an alternating motion of the piston ( 105 ), signaling means ( 210 ) of the temperature of lubricating oil contained in the internal volume of the casing ( 145 ) being applied to the casing ( 145 ).

1 . A pump ( 100 ) comprising a head ( 110 ), in which at least a cylinder is fashioned in which a piston ( 105 ) is slidably housed, and a casing ( 145 ) fixed to the head ( 110 ), which defines an internal volume in which a crankshaft ( 150 ) and at least a conrod ( 155 ) are housed, said at least a conrod ( 155 ) connects the crankshaft ( 150 ) with the piston ( 105 ), such as to be able to transform a rotary motion of the crankshaft ( 150 ) into an alternating motion of the piston ( 105 ), wherein signaling means ( 210 ) of the temperature of lubricating oil contained in the internal volume of the casing ( 145 ) are applied to the casing ( 145 ). 
     
     
         2 . The pump ( 100 ) of  claim 1 , wherein the signaling means ( 210 ) further include measuring means of the temperature. 
     
     
         3 . The pump ( 100 ) of  claim 2 , wherein the measuring and signaling means ( 210 ) comprise a thermochromic substance. 
     
     
         4 . The pump ( 100 ) of  claim 3 , wherein measuring and signaling means ( 210 ) are a liquid crystal thermometer. 
     
     
         5 . The pump ( 100 ) of  claim 4 , wherein the liquid crystal thermometer is applied to the casing ( 145 ) by means of an adhesive. 
     
     
         6 . The pump ( 100 ) of  claim 1 , further comprising signaling means ( 205 ) of the level of the lubricating oil contained in the internal volume of the casing ( 145 ). 
     
     
         7 . The pump ( 100 ) of  claim 6 , wherein the level signaling means ( 205 ) comprise a transparent body ( 245 ) which enable a direct viewing of the level of the oil contained in the internal volume of the casing ( 145 ). 
     
     
         8 . The pump ( 100 ) of  claim 7 , wherein the transparent body ( 245 ) faces an opaque contrast body ( 255 ), with which it defines a gap ( 260 ) which is in hydraulic communication with the internal volume of the casing ( 145 ). 
     
     
         9 . The pump ( 100 ) of  claim 6 , wherein the signaling means ( 210 ) of the temperature of the lubricant oil and/or the level signaling means ( 205 ) are applied to a removable cover ( 170 ) of the casing ( 145 ). 
     
     
         10 . The pump ( 100 ) of  claim 9 , wherein the cover ( 170 ) is aligned with the rotation axis of the crankshaft ( 150 ).