Abstract:
A wastewater separator comprises an inner pivoting assembly and an outer pivoting assembly. The wastewater is guided onto a blade which helically extends in the axial direction of the inner pivoting assembly. The inner pivoting assembly and the outer pivoting assembly are driven to pivot for enabling the impurity in the wastewater to fall off along the blade and the water in the wastewater to flow upwards along the outer pivoting assembly, so as to achieve the objective of separating the water from impurity in the wastewater.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a centrifugal wastewater separation, and more particularly to a wastewater separator. 
         [0003]    2. Description of the Prior Art 
         [0004]    A conventional wastewater separator such as a sullage concentrator disclosed in Taiwan Pat. No. 092221042 generally utilizes an inner pressure tank to discharge the sullage into a centrifugal type separator, and then enables the sullage to swirl in the centrifugal type separator. Therefore, the sullage is subjected to a centrifugal force, so that the sediment subjected to gravity greater than the centrifugal force will drop down, and the water subjected to gravity smaller than the centrifugal force will be kept in the centrifugal type separator and then guided out of the separator, thus separating the water from the sediment. 
         [0005]    However, the above technology only utilizes the high pressure supplied from the pressure tank to produce the centrifugal force required for separation, so that when the ratio of the sediment and the water in the sullage changes, it is necessary to readjust the pressure supplied from the pressure tank to the sullage, thus increasing the operational complexity. In addition, the pressure supplied from the pressure tank can only separate the water from the sediment roughly, so that the above wastewater separator must be additionally equipped with a sieving machine to separate the water from the sediment completely, thus causing the increase of the operation procedure. 
         [0006]    The present invention has arisen to mitigate and/or obviate the afore-described disadvantages. 
       SUMMARY OF THE INVENTION 
       [0007]    The primary objective of the present invention is to provide a wastewater separator, which can achieve the objective of separating the water from the impurities in the wastewater by utilizing an inner pivoting assembly and an outer pivoting assembly to produce a centrifugal force to enable the impurity which is relatively heavy in the wastewater to fall down along the helical blade and the water which is relatively light in the wastewater to flow upwards along the outer pivoting assembly. 
         [0008]    In order to achieve the above objective, the wastewater separator comprises a housing, an outer pivoting assembly and an inner pivoting assembly. The housing is provided with a power source. The outer pivoting assembly is pivoted to the housing and connected to the power source. The outer pivoting assembly includes a cover cylinder. The inner pivoting assembly is pivoted in the outer pivoting assembly and connected to the power source. The inner pivoting assembly includes a helical blade which extends in an axial direction of the inner pivoting assembly and arranged opposite to the cover cylinder. 
         [0009]    The outer pivoting assembly and the inner pivoting assembly are driven to pivot by the power source, so that when the wastewater is guided onto the blade of the inner pivoting assembly, since the blade is helical, the impurity which is relatively heavy in the wastewater will fall down along the blade, and the water which is relatively light in the wastewater will flow outwards under the action of the centrifugal force. When contacting the cover cylinder, the water flowing outwards from the blade will flow upwards along the cover cylinder, thus separating the water from the impurities in the wastewater. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is a schematic view illustrating that a wastewater separator in accordance with the present invention is disposed on a machine; 
           [0011]      FIG. 2  is a schematic view illustrating that a power source for a wastewater separator in accordance with the present invention consists of two motors; 
           [0012]      FIG. 3  is a schematic view illustrating that the power source for a wastewater separator in accordance with the present invention consists of a motor; and 
           [0013]      FIG. 4  is a schematic view illustrating that the power source for a wastewater separator in accordance with the present invention includes a gear box; 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0014]    The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention. 
         [0015]    Referring to  FIGS. 1-2 , a wastewater separator in accordance with the present invention comprises a housing  10 , an outer pivoting assembly  20 , an inner pivoting assembly  30 , and a water supplier  40 . 
         [0016]    The housing  10 , as shown in  FIG. 1 , is disposed on a machine F and provided with a power source  11  consisting of a first motor  12  and a second motor  13 . The shaft  121  of the first motor  12  is fixed with a first active member  122 , and the shaft  131  of the second motor  13  is fixed with a second active member  132 . 
         [0017]    The outer pivoting assembly  20  is exteriorly provided with plural outer bearings A and interiorly provided with plural inner bearings B. The outer bearings A are further disposed in the housing  10  to pivot the outer pivoting assembly  20  in the housing  10  and make the outer pivoting assembly  20  pivot in a direction vertical to the ground. The outer pivoting assembly  20  includes a sleeve  21 , a connection case  22  and a cover cylinder  23 . The sleeve  21 , the connecting case  22  are successively integrally connected with one another in such a manner both axial ends of the outer pivoting assembly  20  communicate outwards. A first passive member  211  is disposed outside the sleeve  21  and connected to the second active member  132  of the second motor  13  of the power source  11  through a first drive member C. The connecting case  22  is formed with an axial through hole  221 . The cover cylinder  23  is vertically tapered downwards. 
         [0018]    The inner pivoting assembly  30  is disposed in the inner bearings B of the outer pivoting assembly  20  in such a manner that the inner pivoting assembly  30  is pivoted in the outer pivoting assembly  20  and pivots in a direction vertical to the ground. The inner pivoting assembly  30  includes a duct  31 , a blade socket  32  and a blade  33 . The duct  31  includes a guiding hole  311  and is exteriorly provided with a second passive member  312 , which is connected to the first active member  122  of the first motor  12  of the power source  11  through a second drive member D. The blade socket  32  is radially formed with plural flow passages  321  communicating with one another at an upper end thereof. The upper end of the blade socket  32  is integrally connected with the duct  31 , and the flow passages  321  of the blade socket  32  communicate with the guiding hole  311  of the duct  31 . The blade socket  32  further includes a water passage  322  and plural water outlet passages  323 . The water passage  322  is axially formed under the blade socket  32 . One end of the respective water outlet passages  323  communicates with the water passage  322 , and the other end of the respective water outlet passages  323  communicates outwards from the side surface of the blade socket  32 . The blade  33  is disposed on the side surface of the blade socket  32 . The blade  33  helically extends in an axial direction of the inner pivoting assembly  30  and is arranged opposite to the cover cylinder  23  of the outer pivoting assembly  20 . Between blade  33  and the cover cylinder  23  is provided a clearance. 
         [0019]    The water supplier  40  is exteriorly provided with plural bearings E at one end thereof. The bearings E are further disposed in the water passage  322  of the blade socket  32  of the inner pivoting assembly  30  in such a manner that the end of the supplier  40  is pivoted in the water passage  322  of the blade socket  32  from the lower end of the blade socket  32 . The water supplier  40  further includes a through hole  41  communicating with the water passage  322 . 
         [0020]    The shaft  121  of the first motor  12  of the power source  11  utilizes the first active member  122 , the second drive member D and the second passive member  312  of the duct  31  of the inner pivoting assembly  30  to drive the inner pivoting assembly  30  to pivot. The shaft  131  of the second motor  13  of the power source  11  utilizes the second active member  132 , the first drive member C and the first passive member  211  of the sleeve  21  of the outer pivoting assembly  20  to drive the outer pivoting assembly  20  to pivot. 
         [0021]    When being guided in from the guiding hole  311  of the duct  31  of the inner pivoting assembly  30 , under the action of the centrifugal force produced by the pivoting of the inner pivoting assembly  30 , the wastewater will flow out to the blade  33  from the flow passage  321  of the blade socket  32 . As the inner pivoting assembly  30  pivots and the wastewater is continuously guided in, the relatively heavy impurities in the wastewater will continuously increase and be pressed to drop down along the blade  33 , and the relatively light water will flow outwards under the action of the centrifugal force produced by the pivoting of the inner pivoting assembly  30 . When contacting the cover cylinder  13 , the water flowing from the blade  33  will be guided by the tapered cover cylinder  23  in the clearance between the blade  33  and the cover cylinder  23  to flow upwards along the cover cylinder  23  and then spew upwards from the through hole  221  of the connecting case  22  of the outer pivoting assembly  20 . By such arrangements, the water can be separated from the impurities. 
         [0022]    If the power source  11  drives the outer pivoting assembly  20  and the inner pivoting assembly  30  to pivot in the same direction, the separation effect of the impurities and water in the wastewater can be improved. In addition, increasing the pivoting speed higher than the outer pivoting assembly  20  can further improve the separation effect and make the purity of separated water reach 90% and the dryness of the separated impurities reach 60%. 
         [0023]    When the clean water is guided in through the through hole  41  of the water supplier  40 , the clean water will flow in the water passage  322  of the blade socket  32  of the inner pivoting assembly  30  and then flow out of the water outlet passages  323  onto the blade  33 , so that the blade  33  of the inner pivoting assembly  30  and the cover cylinder  22  of the outer pivoting assembly  20 . In addition, the clean water which is guided in through the through hole  41  of the water supplier  40  during the separation of wastewater can wash the impurities separated from the wastewater. 
         [0024]    Additionally, besides consisting of a first motor  12  and a second motor  13  to drive the inner pivoting assembly  30  and the outer pivoting assembly  20 , the power source  11  can consist of a motor  14  whose shaft  141  is fixed with a third active member  142  and a fourth active member  143  to drive the inner pivoting assembly  30  and the outer pivoting assembly  20 .The third active member  142  is connected to the second passive member  312  of the duct  31  of the inner pivoting assembly  30  through the second drive member D, and the fourth active member  143  is connected to the first passive member  211  of the sleeve  21  of the outer pivoting assembly  20  through the first drive member C. 
         [0025]    In the above embodiments, the active members  122 ,  132 ,  142 ,  143  and the passive members  211 ,  312  can be in the form of a pulley, gear, dentate disc or other pivoting actuating elements. The drive members C and D can be in the form of a belt, chain or other linkage elements. The cover cylinder  23  of the outer pivoting assembly  20  can also be a straight cylinder, which has the function of separating the impurities from water in the wastewater. 
         [0026]    Further referring to  FIG. 4 , the power source  11  can also consist of a motor  14  and a gear box  50 . The motor  14  is connected to the gear cluster in the gear box  50 , and a first gear  51  and a second gear  52  are exposed out of the gear box  50 . The first passive member  211  and the second passive member  312  are both in the form of a gear. The first passive member  211  is engaged with the second gear  52 , and the second passive member  312  is engaged with the first gear  51 . By such arrangements, the motor  14  of the power source  11  can utilize the first gear  51  and the second gear  52  to drive the second passive member  312  and the first passive member  211  to enable the outer pivoting assembly  20  and the inner pivoting assembly  30  to pivot, so as to separate the water from the impurities in the wastewater. 
         [0027]    While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.