Diametric slider block pump

Abstract

A pump includes a base, a rotor, a slider block, a cover, and a drive member. Thus, the pump is used to pump the fluid in two opposite directions by changing the rotation direction of the rotor without having to change the parts of the pump, thereby enhancing the versatility of the pump, and thereby facilitating a user operating the pump. In addition, the pump has a simple apparatus with a lighter weight and smaller volume, thereby decreasing the space of operation and storage.

1 . A pump, comprising: 
 a base including a disk and an annular wall formed on a periphery of the disk, the annular wall of the base having an inner periphery formed with two radially opposite inward protruding arc-shaped flanges and an outer periphery formed with two radially opposite outward protruding connecting tubes each connected to the inner periphery of the annular wall of the base;    a rotor rotatably mounted in the annular wall of the base and having a first side formed with a slideway, the rotor having an outer periphery rested on an inner arcuate face of each of the flanges of the annular wall of the base, thereby forming two radially opposite arc-shaped flow channels between the inner periphery of the annular wall of the base and the outer periphery of the rotor;    a slider block slidably mounted in the slideway of the rotor reciprocally and having a mediate portion formed with an insertion recess, the slider block having an axial length smaller than that of the slideway of the rotor, so that two storage chambers are defined between the slideway of the rotor and two ends of the slider block and are connected to the two flow channels respectively;    a cover mounted on the annular wall of the base to close the two flow channels;    a pivot shaft secured on a bottom of the cover; and    a drive member rotatably mounted on the pivot shaft and inserted into the insertion recess of the slider block so that the slider block is slidable on the drive member.    
   
   
       2 . The pump in accordance with  claim 1 , wherein the flanges of the base are located between the connecting tubes, and an included angle of 90 degrees is defined between each of the flanges and each of the connecting tubes.  
   
   
       3 . The pump in accordance with  claim 1 , wherein the outer periphery of the annular wall of the base is formed with a plurality of fixing ears, and the cover has a periphery formed with a plurality of fixing ears fixed on the fixing ears of the base by a plurality of bolts and a plurality of nuts.  
   
   
       4 . The pump in accordance with  claim 1 , wherein the disk of the base has a center formed with a shaft hole, and the rotor has a second side axially formed with a protruding shaft rotatably mounted in and protruded outward from the shaft hole of the base.  
   
   
       5 . The pump in accordance with  claim 4 , further comprising a shaft seal and a bearing each mounted between the shaft and the shaft hole of the base.  
   
   
       6 . The pump in accordance with  claim 1 , wherein each of the two flow channels is located between the flanges of the base in a symmetric manner and is connected to a respective one of the connecting tubes of the base.  
   
   
       7 . The pump in accordance with  claim 1 , wherein the slideway of the rotor is radially extended through an axial center of the rotor and through the outer periphery of the rotor.  
   
   
       8 . The pump in accordance with  claim 1 , wherein the slideway of the rotor has a width matching that of each of the flanges of the base.  
   
   
       9 . The pump in accordance with  claim 1 , wherein each of the two ends of the slider block has an arcuate face matching the inner arcuate face of each of the flanges of the base.  
   
   
       10 . The pump in accordance with  claim 1 , wherein each of the two ends of the slider block is urged on the inner arcuate face of a respective one of the flanges of the base when the slider block is slidable in the slideway of the rotor reciprocally.  
   
   
       11 . The pump in accordance with  claim 1 , further comprising a seal ring mounted between the cover and the annular wall of the base to provide a sealing effect.  
   
   
       12 . The pump in accordance with  claim 1 , wherein the pivot shaft has an axial center parallel with that of the rotor and the cover.  
   
   
       13 . The pump in accordance with  claim 1 , wherein the pivot shaft has an axial center located at a connecting line between the flanges of the base.  
   
   
       14 . The pump in accordance with  claim 1 , wherein the pivot shaft has an axial center aligning with that of the drive member and deviating from that of the rotor, so that the axial center of the drive member deviates from that of the rotor.  
   
   
       15 . The pump in accordance with  claim 14 , wherein the drive member is rotatable on the pivot shaft when the rotor is rotated, thereby forming a relative sliding motion between the slider block and the drive member to drive the slider block to slide in the slideway of the rotor reciprocally to change the dimension of the two storage chambers.  
   
   
       16 . The pump in accordance with  claim 1 , wherein the cover has an end face formed with an annular groove, and the rotor has an end face formed with a protruding limit ring pivotally mounted in the annular groove of the cover.  
   
   
       17 . The pump in accordance with  claim 16 , further comprising a gasket mounted between the limit ring of the rotor and the annular groove of the cover to separate the limit ring of the rotor from the annular groove of the cover.