Abstract:
A vacuum osmosis and solidification forming machine mainly comprises a forming chamber, a compressible hydraulic cylinder, a closed hydraulic cylinder, and a support frame. A solidifying material A and a pending solidification material B pre-dried and mixed uniformly in pre-determined dose ratio are guided into the air evacuated empty forming chamber to meet with a foggy liquid stabilizer or assistant. So that, the materials A, B are contacted sufficiently with the stabilizer for being thoroughly moistened by the capillary phenomenon and compressed to a minimum volume for being solidified.

Description:
BACKGROUND OF THE INVENTION 
     1. As ball clay, pottery clay, or china clay, etc cannot coagulate itself to form articles as hard as those made through firing, hence, sintering process of the green-cast article and some related machinery, such as screw mixer, kneading mill, and forming machine, etc, have been used for quite a long time. However, at the time the concept of environment protection is greatly enhanced, the sintering process is supposed to lead itself approaching a dead end owing to its released toxic gases. 
     2. A sintering free hydration process may take its place to cake and harden cement, lime, and the like, which will commence coagulation within 40 minutes after meeting moisture (without sintering), and become harder and harder with time. And, it is understood that coagulating and hardening principle is quite different between sintering and hydrating, the implements used in the former is no longer applicable to the latter. 
     If the machines applied in point 1 are employed for producing the materials in point 2, it is possible that some remainder will stay at corners in blind angle after a working cycle to interfere the new coming material. And, from time to time, the remainder becomes bigger and bigger, harder and harder by accumulation to finally clog operation of the implements. 
     In view of the above, this invention discards the conventional process that mixes dry and wet materials together, also the auger extrusion forming machine and blade mixing method. Instead, this invention separates the dry and the wet material for uniformly pre-mixing respectively to change the fabrication process and implementation thoroughly in order to realize a smooth mass production with higher quality for materials that can become coagulated and hardened by moisture. 
     SUMMARY OF THE INVENTION 
     This invention relates a vacuum osmosis and solidification forming machine, particularly to a forming machine that evacuates air from a forming chamber with a vacuum pump to enable the pre-dosed uniform dry powder of a solidifying or a pending solidification material put in the forming chamber thereafter to avail itself of the principle of liquid extraction by vacuum osmosis to contact entirely with a dosed liquid stabilizer sprayed into the chamber, and to be compressed to a minimum volume for achieving solidifying condition of saturated moisture. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     For a better understanding to the present invention, together with further advantages or features thereof, at least one preferred embodiment will be elucidated below with reference to the annexed drawings in which: 
     FIG. 1 is a schematic assembled view of this invention; 
     FIG. 2 is a schematic view of this invention showing injection of a solid or solidified material; 
     FIG. 3 is a schematic view of this invention showing injection of a stabilizer; 
     FIG. 4 is a schematic view of this invention showing compression and air evacuation; 
     FIG. 5 is a schematic view of this invention showing solidifying and forming duration; and 
     FIG. 6 is a schematic view showing a forming chamber of this invention under cleaning. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     This invention is proposed to provide a vacuum osmosis and solidification forming machine that can moisten a dry or a wet material to saturated condition by vacuum principle without using blade agitation to permit entire contact of a powder material with a liquid material for prolonging lifetime of implements and realizing a purpose of smooth mass production. 
     Firstly, as shown in FIG. 1, this invention mainly comprises a forming chamber  2 , a compressible hydraulic cylinder  3 , a closed hydraulic cylinder  4 , and a support frame  5 . 
     The forming chamber  2  is an empty space, wherein an inlet  20  and an outlet  21  are defined in opposite chamber walls; a feeding mouth  22  is formed in ceiling of the chamber  2 , and a spray nozzle  23  located adjacently to the feeding mouth  22  is coupled with an injection tube  24 . 
     The compressible hydraulic cylinder  3  is placed in front of the inlet  20 , wherein a piston  30  is provided to the compressible hydraulic cylinder  3  at its front end; and the piston  30  is closely attached to inner side of the inlet  20  of the forming chamber  2 . 
     The closed hydraulic cylinder  4  is disposed near the outlet  21  of the forming chamber  2 , wherein a sealing cover  40  is provided to the closed hydraulic cylinder  4  at its front end; the sealing cover  40  is perforated to form an air evacuation orifice  41 ; an communicable gas room  410  is located in front of the sealing cover  40  by a proper distance and is equipped with a filter net  42  on its face; the filter net  42  is made of a metallic material and is covered with a replaceable nonwooven cloth piece for protecting the metallic filter net  42 . 
     The support frame  5  is arranged above the forming chamber  2 , wherein a stationary hydraulic cylinder  50  is installed at the support frame  5 , and a sealing board  500  is provided to the stationary hydraulic cylinder  50  at its front end; a movable hydraulic cylinder  51  is positioned laterally near the stationary hydraulic cylinder  50  and is offered with a pulley set  510  facilitating the hydraulic cylinder  51  to move horizontally on the support frame  5 ; an input tube  511  is jointedly disposed at the front end of the movable hydraulic cylinder  51 ; a vacuum pump  52  is installed at a lateral end of the support frame  5 ; and a vacuum tube  520  is coupled with the air evacuation orifice  41  of the sealing cover  40 . 
     When operating, as shown in FIG. 2, the closed hydraulic cylinder  4  starts to push the sealing cover  40  to seal the outlet  21  of the forming chamber  2 , and the pulley set  510  moves on the support frame  5  horizontally to drive the movable hydraulic cylinder  51  to an optimum position to enable the input tube  511  to enter the feeding mouth  22 . In virtue of a negative pressure created during air evacuation, the input tube  511  is capable of sucking a pre-dried and uniformly mixed solidifying material A (such as cement, lime, pyrophyllite, ash, gypsum, magnesium oxide, etc) and a pending solidification material B (such as sand, mud, dry powder, powdery industrial waste, etc) with 3% moisture content approximate in order not to fly around during feeding process. In the duration the vacuum pump is working, the operator is to inject a foggy liquid stabilizer C (liquid ions or other industrial assistants) through the spray nozzle  23  of the injection tube  24  until a pre-determined quantity is reached, then remove the input tube  511 . At this time, the stationary hydraulic cylinder  50  is supposed to move downwards until the sealing board  500  covers the feeding mouth  22  to thoroughly close the forming chamber  2 . Nevertheless, the vacuum pump  52  is still evacuating air from the forming chamber  2  via the evacuation orifice  41  to enter the vacuum tube  520  while the solidifying material A and the material pending solidification B are stopped by the filter net  42  to remain in the forming chamber  2 . 
     The liquid stabilizer C will produce a negative pressure due to vacuum osmosis, that is, the side with larger pressure osmoses into the side with smaller pressure, hence, it can propagate to everywhere in gap of dry material molecules in the forming chamber  2  and moisten the solidifying material A and the pending solidification material B to obtain an efficacy of sufficient real contact under pseudo-mixture. 
     At this point of time, the compressible hydraulic cylinder  3  starts to act (as shown in FIG. 4) by moving the piston  30  towards the outlet  21  to compress the solidifying material A and the pending solidification material B to shrink their volume for the stabilizer C to readjust its internal stress. As shown in FIG. 5, before the solidifying material A and the pending solidification material B start to coagulate, the air evacuation is stopped, the sealing cover  40  is retreated back to the closed hydraulic cylinder  4 , and the piston  30  of the compressible hydraulic cylinder  3  keeps moving forward to force and drain the compressed and saturated solidifying material A and the pending solidification material B out of the forming chamber  2 . 
     The micro-particles of the expelled material will be gathered by atmosphere pressure to form aggregated hard pieces and drop into a container D on a conveyer for transportation and storage. When cleaning the forming chamber  2  is desired after a long time operation, as shown in FIG. 6, the piston  30  of the compressible hydraulic cylinder  3  can be drawn back to leave the forming chamber  2 . 
     From the abovesaid, the merits of this invention may be summarized in the following: 
     1. The principle of vacuum osmosis is applied instead of blade mixing to thorough moisten powder and dosed liquid in solidification process; and by evacuating air inside to lessen internal pressure, the solidified material becomes high-density aggregated hard pieces. 
     2. The defects in conventional blade agitation are eliminated. No remainder will accumulate in the forming chamber to ensure lifetime of continuous operation for mass production. 
     3. As the moisture content is rather low during solidification process, the strength of cement against pressure can be substantially kept. 
     4. The interior pressure produced by the compressible hydraulic cylinder enables the stabilizer to distribute and osmose uniformly, and it can minimize the solidified volume to enhance impermeability and ability of moisture-proof for easy storage and transportation. 
     5. The forming chamber is substantially opened at both ends that can facilitate a cleaning job. 
     Although, this invention has been described in terms of preferred embodiments, it is apparent that numerous variations and modifications may be made without departing from the true spirit and scope thereof, as set forth in the following claims.