Patent Publication Number: US-2007102342-A1

Title: On-the-fly long-running rotary filtration screen device

Description:
BACKGROUND OF THE INVENTION  
      The present invention concerns an on-the-fly long-running rotary filtration screen. More specifically, the present invention relates to an on-the-fly long-running rotary filtration screen, wherein a filtration bar that comprises a rotating splitflow bar and a filtration sleeve is employed to filter away extraneous matters. The motor is actuated, which causes the large gear linked to the small gear to rotate. The hydraulic cylinder is also actuated with the motor. The action of the hydraulic cylinder causes the filtration bar to move forward to a certain distance and backward to its original position, thereby generating a reciprocating action. Meanwhile, the plastic raw material is being mixed and stirred continuously, the action of transportation causes extraneous matters to be pushed into the space of the residue removing thread and to be pushed outward, thereby allowing the extraneous matters accumulated inside the space of the residue-removing thread to be discharged from the main housing so that a cleaner raw material can be obtained with the need to change the filtration screen. Moreover, an on-the-fly long-running rotary filtration device operation can be maintained.  
      Conventional filtration devices typically involve inserting a filtration screen onto a split-flow bar. However, this design is problematic in that the operating machinery must be stopped periodically in order to remove the extraneous matters collected by the filtration screen, and because this cleaning procedure is time consuming. It interrupts the transport of the raw material and it is uneconomical. As a result, productivity is adversely affected. Moreover, since extraneous matters cannot be removed continuously, a thorough filtration process cannot be realized and the filtered raw material still contains some extraneous matters. The on-the-fly long-running rotary filtration screen device of the present invention is based on a circumferential.  
      The following merits can be achieved with the design improvement of the present invention: 
      1. On-the-fly operation: With the filtration device of the present, a guide bar  47  is inserted into the guide bar slot equipped inside the residue removing rod to cause the residue removing rod  12  to rotate continuously, thereby pushing the extraneous matters outward without remaining. Accordingly, the operating machinery can operate continuously without interrupts in the production cycle. Furthermore, the cleaning operation is simple since it is not necessary to stop the operating machinery.     2. Time saving: Since the residue-removing rod can be cleaned without interrupting the feed process, the time required to filter a plastic material can be reduced and the feeding process is not subject to downtime.     3. Thorough residue remove: The lower guide slot  36  allows extraneous matters to flow into the space of the residue removing thread.     4. Long working life: The filtration device of the present invention is completely automatic and does not require disassembly, which is disable from the standpoint of the labor and maintenance costs. Moreover, the problem of the damaging parts and components due conventional filtration devices is alleviated.    

     SUMMARY OF THE INVENTION  
      The present invention that relates to an on-the-fly long-running rotary filtration device comprises a residue removing bar which rotates continuously The action of residue removing bar pushes filtered extraneous matters outward and causes the extraneous matters to be discharged from the main housing without the need to change the filtration screen. Thus, an on-the-fly long-running rotary filtration operation can be maintained.  
                                                   (1) Main housing            (2) Split-flow bar            (3) Filtration sleeve            (4) Filtration screen            (5) A large gear            (6) A small gear            (7) Motor            (8) Stop disc            (9) Square key           (10) Square key           (11) Outlet housing           (12) Residue-removing rod           (13) Round through hole           (14) Intake opening           (15) Funnel-shaped opening           (16) Round hole           (17) Rectangular slot           (18) Rectangular slot           (19) Round rod           (20) Threaded rod           (21) Round through hole           (22) Circular sunk slot           (23) Threaded hole           (24) Threaded hole           (25) Conical hole           (26) Threaded hole           (27) Cylinder           (28) Small round hole           (29) Rod through hole           (30) Rectangular slot           (31) Rectangular slot           (32) Round through hole           (33) Rectangular slot           (34) Rectangular slot           (35) Residue-removing thread           (36) Conduit           (37) Hydraulic cylinder           (38) Round disc           (39) Threaded hole           (40) Threaded hole           (41) Funnel-shaped opening           (42) Screw           (43) Screw           (44) Space           (45) Round rod           (46) Hydraulic cylinder           (47) Guide bar           (48) Guide bar slot           (51) Main housing           (52) Split-flow bar           (53) Filtration Sleeve           (54) Filtration Screen           (55) Residue-removing bar                      
 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is a dissectional drawing of the filtration device of the previous invention  
       FIG. 2  is a detailed drawing of the residue removing rod of the present invention.  
       FIG. 3  is a three-dimensional drawing of the filtration device of the previous invention  
       FIG. 4  is a dissectional drawing of the filtration device of the previous invention  
       FIG. 5  is a cut-away drawing of the A-A section of the filtration device of the present invention.  
       FIG. 6  shows the action of the A-A section of the filtration device of the present invention.  
       FIG. 7  is cut-away drawing of the B-B section of the filtration device of the present invention.  
       FIG. 8  shows the action of the C-C section of the filtration device of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      As shows in  FIG. 3  and  4 , the On-the-fly Long-running rotary Filtration Screen device of the present invention comprises a main housing  1 , a split-flow bar  2 , a filtration sleeve  3 , a filtration screen  4 , a large gear  5 , a small gear  6 , a motor  7 , a stop disc  8 , two square keys  9  and  10 , an outlet housing  11  and a residue removing rod  12 . The interior of the main housing is required with a round through hole  13 , the upper part is equipped with a perpendicular intake opening  14 , the intake opening extends downward and is tapered to form a funnel-shaped opening  15 , the funnel-shaped opening  15  is connected to the round through hole  13 , the lower side of the round through hole  13  is also equipped with a round hole  16 , a conduit  47  connecting the two round holes  16  and  13  is installed between the round  16  and the through hole  13  the round hole  16  doesn&#39;t completely piece through the main housing  1 , the true bottom of the rear part of the main housing  1 , is equipped with a circular sunk slot  22 , the circular sunk slot is equipped with two small perpendicular threaded holes  23 . 24 , and the center of the circular sunk slot  22  is equipped with a conical hole  20  connecting with the round through hole  13 . The upper of lower portion of the split-flow bar  2  are each equipped with a long rectangular slot  17 . 18 , the left end of the split flow bar  2  is equipped with a round bar  45 , the round bar  45  is connected to a hydraulic cylinder  46 , the other end of the split-flow bar  2  is equipped with a small round bar  9 , with a smaller diameter, and the end of the round bar  19  is equipped with a threaded rod  20 , with a small diameter than that of the round rod  19 . The center of the filtration sleeve  3  is equipped with a non-piecing threaded round hole, the inner side of the filtration sleeve  3  is equipped with a cylinder  27  is equipped with a number of small round holes  28 , and these small round holes are open to the round hole  21 . For the large gear  5 , the outer rim is toothed and the center is equipped with a round hole  29 , and the round hole  29  is equipped with two square slots  30 . 31  facing each other from opposite sides. The center of the stop disc  8  is equipped with a round hole  32  and the round hole is equipped with two square slots  33 . 34 . As for the residue removing rod  12 , its circumference surface is equipped with spiral slice residue removing thread  35 , the inner side of the residue removing rod  12  is equipped with a guide bar slot  47 , so that guide bar can be inserted inside the guide bar slot  47  (see  FIG. 8 ), the round disc  38  is aligned with two thread holes  39 . 40  piecing through the round disc  38  and the outlet housing  11  is equipped with a downward funnel-shaped opening  41 . In assembling these components, a cylindrical filtration screen  4  is inserted onto the cylinder of the filtration sleeve  3 , which is followed by inserting the split-flow bar  2  into the filtration sleeve  3  by screwing the threaded rod  20  into the threaded round hole  26 , thereby forming a filtration bar  48 . The filtration bar  48  is then inserted into the round through hole  13 , which is followed by inserting the large gear  5  (i.e. by means of the round holes  29 .) onto the part of the round rod  19  of the split-flow bar  2  of the filtration bar  48  that is outside the main housing  1  and then inserting the square keys  9  and  10  into the spaces formed the two opposing square slots  17 . 18  of the split-flow bar  2  and the two opposing square slots  30  and  31  of the round hole  29  of the large gear  5 . Afterward, the stop disc  8  is placed next to the large gear  5  in a manner that the two square keys  9 . 10  are housed inside the two square slots  33  and  34  of the stop disc  8 . The outlet housing  11  is then installed in the circular sunk slot at the bottom of the main housing  1 , the two threaded holes  39 . 40  of the round disc  38  are aligned with the two thread holes  23 . 24  on the circular sunk slot  22 , and then the residue removing rod  12  is inserted into the round  16  at the lower part of the main housing  1 . After assembly, the filtration screen  4  and cylinder  27  are positioned immediately below the funnel-shaped opening  15  on the lower side of the intake opening  14 , while a space is formed between the split-flow bar and the filtration sleeve  3  and the gap  44  aligns immediately with the conical  25 . In putting the device to work (see  FIG. 5 . 6 ), the motor is actuated, which causes the small gear  6  to rotate. The rotating small gear  6 , which is linked to the large gear  5 , in turn causes the large gear  5  to rotate. Since the large gear  5  and the split-flow bar  2  are bound to each other by means of two square keys  9 , 10 , the filtration bar  48  rotates inside the round hole  13  of the main housing. Meanwhile, a plastic raw material is fed from the intake opening  14 , and the flow of the plastic raw material generates a pressure that causes it to pass through the filtration screen  4  and the small round holes on the cylinder  27  into the space formed by the split-flow bar and the round hole  21 . Meanwhile, the filtration bar, which rotates continuously, mixes and transports the plastic raw material toward the space formed between the split-flow and the filtration sleeve  3 , thereby allowing the plastic raw material to flow into the conical hole  25  and to be discharged from the funnel-shaped outlet of the outlet housing  11 . The hydraulic cylinder  46  is also actuated with the motor  7 . The action of the hydraulic cylinder  46  causes the round rod  45  to move forward as shown in  FIG. 6 , which in turn causes the filtration bar  48  to move forward to a certain distance and backward to its original position, thereby generating a reciprocating action. Meanwhile, the plastic raw material is being mixed and stirred continuously, the action of transportation causes extraneous matters to be pushed into the space of the residue removing thread  35 , the guide bar  47  is inserted into the guide bar slot, which is equipped in the residue removing bar, to cause the residue removing bar to rotate continuously, the action causes the extraneous matters to be pushed outward, thereby allowing the extraneous matters accumulated inside the space of the residue removing thread  35  to be discharged from the main housing  1 ., thus allowing the filtration device to operate continuously without stopping.