Pump-used filter device

Abstract

A pump-used filter device includes a connecting body capable of communicating with a spray gun pump. The connecting body is formed with a liquid incoming passage and a liquid outgoing passage. A hollow main body is locked with the connecting body. A filter mesh is horizontally disposed between the main body and the connecting body to divide the interiors of the connecting body and the main body into an upper and a lower cavities. The liquid incoming passage of the connecting body communicates with the lower cavity, while the liquid outgoing passage communicates with the upper cavity. The main body has a conic bottom section. High-pressure liquid paint is guided through the liquid incoming passage into the lower cavity. After filtered through the filter mesh, the clean liquid paint goes through the upper cavity to the liquid outgoing passage.

1 . A pump-used filter device comprising: 
 a connecting body capable of communicating with a spray gun pump, the connecting body being formed with an internal upper cavity, the connecting body being further formed with a guide post in the upper cavity, the connecting body being further formed with a liquid incoming passage passing through the guide post, the connecting body being further formed with a liquid outgoing passage on one side other than the liquid incoming passage, one end of the liquid outgoing passage communicating with the upper cavity, the other end of the liquid outgoing passage being formed with at least one outlet;    a main body having a connecting section locked with the connecting body, the main body further having a coupling section immediately adjacent to the connecting section, the coupling section being formed with an internal lower cavity corresponding to the upper cavity of the connecting body; and    a filter mesh horizontally disposed between the main body and the connecting body, the guide post being fitted through and located in the filter mesh, whereby the filter mesh separates the upper cavity of the connecting body and the lower cavity of the main body from each other as two spaces.    
   
   
       2 . The pump-used filter device as claimed in  claim 1 , wherein the coupling section of the main body is a conic section.  
   
   
       3 . The pump-used filter device as claimed in  claim 2 , wherein bottom end of the conic section of the main body is formed with an opening in which a valve body is locked.  
   
   
       4 . The pump-used filter device as claimed in  claim 1 , wherein a circumference of the connecting body is formed with an outer thread section and the connecting section of the main body is formed with an inner thread hole, the outer thread section of the connecting body being locked in the inner thread hole, whereby a circumference of the filter mesh is clamped between the main body and an end of the outer thread section of the connecting body.  
   
   
       5 . The pump-used filter device as claimed in  claim 1 , wherein outer and inner circumferences of the filter mesh respectively have an outer and a central leakproof washers, the guide post being fitted through the central washer, the outer washer being clamped between the main body and an end of the outer thread section of the connecting body.  
   
   
       6 . The pump-used filter device as claimed in  claim 5 , wherein multiple reinforcing ribs are disposed between the two washers of the filter mesh at equal angular intervals.  
   
   
       7 . The pump-used filter device as claimed in  claim 1 , wherein a guide member is locked on one end of the guide post, which passes through the filter mesh, whereby the filter mesh is clamped by the guide post of the connecting body and the guide member on two sides of the filter mesh, the guide member having a chamber communicating with the liquid incoming passage, at least one guiding outlet being formed through the guide member and communicating with the chamber.  
   
   
       8 . The pump-used filter device as claimed in  claim 5 , wherein a guide member is locked on one end of the guide post, which passes through the filter mesh, whereby the filter mesh is clamped by the guide post of the connecting body and the guide member on two sides of the filter mesh, the guide member having a chamber communicating with the liquid incoming passage, at least one guiding outlet being formed through the guide member and communicating with the chamber.  
   
   
       9 . The pump-used filter device as claimed in  claim 7 , wherein the guiding outlet of the guide member is perpendicular to the chamber.