Pulp manufacturing method of used paper recycling apparatus, pulp manufacturing device of used paper recycling apparatus, and used paper recycling apparatus

Abstract

The invention presents a pulp manufacturing technology for realizing a used paper recycling apparatus of furniture size that can be installed not only in a large office, but also in a small shop or general household. In the beating process of the pulp making process for fragmenting and beating the used paper for manufacturing used paper pulp, a grinder having a pair of beating disks rotated relatively, beating action surfaces of the beating disks are disposed oppositely across a tiny beating gap, thereby a used paper pulp circulation route is formed, in which the used paper pulp beaten by the grinder is processed in the beating process while being circulated in the used paper pulp circulation route, and the beating gap of the beating action surfaces is adjusted to be narrower gradually from the beginning till the end of the beating process. As a result, in a limited narrow working space, a smooth and efficient beating operation is realized from the beginning till the end of the beating process.

1 . A pulp manufacturing method applied in a used paper recycling apparatus, the used paper recycling apparatus being installed in an apparatus case of furniture size, and comprising a pulp making process of fragmenting used paper and manufacturing used paper pulp, and a paper making process of making the used paper pulp manufactured in this pulp making process and producing recycled paper, comprising:
 a fragmenting process of agitating, grinding and fragmenting the used paper, and a beating process of beating the used paper fragmented in the fragmenting process,   wherein in the beating process, a used paper pulp circulation route is formed by disposing at least one beating means having a pair of relatively rotating beating disks, beating action surfaces of the beating disks are disposed oppositely across a tiny beating gap, and   the used paper pulp being beaten by the beating means is circulated in the used pulp circulation route while the beating process is executed, and the beating gap of the beating action surfaces is controlled to be narrower gradually from the beginning to the end of the beating process.   
   
   
       2 . The pulp manufacturing method of the used paper recycling apparatus of  claim 1 ,
 wherein in the beating process, the beating gap of the beating means is controlled to be narrowed in gradual steps from the beginning till the end of the beating process.   
   
   
       3 . The pulp manufacturing method of the used paper recycling apparatus of  claim 1 ,
 wherein in the beating process, the beating gap of the beating means is controlled to be narrowed in continuous steps from the beginning till the end of the beating process.   
   
   
       4 . The pulp manufacturing method of the used paper recycling apparatus of  claim 1 ,
 wherein the fragmenting process is characterized by charging the used paper into fragmenting tank and supplying water into the fragmenting tank in a quantity corresponding to the charged amount of the used paper, and agitating the used paper and water by agitating means disposed rotatably in the fragmenting tank, thereby fragmenting and beating the used paper.   
   
   
       5 . The pulp manufacturing method of the used paper recycling apparatus of  claim 4 ,
 wherein the supply amount of water in the fragmenting process is determined so that the concentration of the used paper pulp fragmented and beaten by the agitating means may be a maximum allowable concentration for the beating capacity of the beating means in the subsequent beating process.   
   
   
       6 . A pulp making device of a used paper recycling apparatus, the used paper recycling apparatus is installed in an apparatus case of furniture size, comprising a fragmenting unit of agitating, grinding and fragmenting the used paper, and a beating unit of beating the used paper fragmented in the fragmenting unit,
 wherein the beating unit forms a used paper pulp circulation route by disposing at least one beating means for beating the used paper pulp, and includes circulating means for circulating the used paper pulp in the used paper pulp circulation route, and beating control means for controlling by mutually cooperating the beating means and the circulating means,   the beating means is formed as a grinder having a pair of beating disks rotated and driven relatively, a beating action surfaces of the beating disks are disposed oppositely across a tiny beating gap, and   the beating control means is composed to control the beating means and the circulating means so as to execute the beating process of the used paper pulp beaten by the beating means while being circulated in the used paper pulp circulation route by the circulating means, and to narrow the beating gap of the beating action surfaces narrower gradually from the beginning till the end of the beating process.   
   
   
       7 . The pulp making device of the used paper recycling apparatus of  claim 6 ,
 Wherein the beating means is formed as a grinder having a pair of beating disks rotated and driven relatively, a beating action surfaces of the beating disks are disposed oppositely across a tiny beating gap, and   the beating action surfaces are provided with annular flat surfaces formed on the outer circumference of the beating disks, and the annular flat surfaces form the beating gap.   
   
   
       8 . The pulp making device of the used paper recycling apparatus of  claim 7 ,
 wherein the beating means includes a beating tank having a supply port for supplying the used paper pulp from the upstream side and a discharge port for discharging the beaten used paper pulp to the downstream side, a pair of beating disks disposed relatively and rotatably in the beating tank, and a rotation drive source for rotating and moving these beating disks relatively, and   the used paper pulp supplied from the supply port is pressurized and beaten by the beating action surfaces while being passed through the beating gap between the beating disks.   
   
   
       9 . The pulp making device of the used paper recycling apparatus of  claim 8 ,
 wherein gap adjusting means is provided for moving the pair of beating disks relatively in the rotation axial direction, and adjusting the beating gap of these beating disks.   
   
   
       10 . The pulp making device of the used paper recycling apparatus of  claim 7 ,
 wherein one of the pair of beating disks is a fixed beating disk provided fixedly in the rotating direction, and the other is a rotatable beating disk provided rotatably, and   an inlet communicating with the supply port of the beating tank is formed in a central position of the beating action surface of the fixed beating disk, and two annular flat surfaces formed on the outer peripheral edge of the beating action surfaces of the pair of beating disks form an exit communicating with a discharge port of the beating tank and having the beating gap.   
   
   
       11 . The pulp making device of the used paper recycling apparatus of  claim 10 ,
 wherein the beating action surfaces are grinding surfaces formed by coupling multiple abrasive grains by means of a binding material.   
   
   
       12 . The pulp making device of the used paper recycling apparatus of  claim 6 ,
 wherein the fragmenting unit includes a fragmenting tank having a used paper feed port for feeding and supplying the used paper, and a discharge port for discharging the fragmented used paper pulp to the downstream side, and rotatable agitating means disposed rotatably in the fragmenting tank, and the used paper supplied from the used paper feed port is mixed with water and agitated by the agitating means, and fragmented and beaten.   
   
   
       13 . The pulp making device of the used paper recycling apparatus of  claim 12 ,
 wherein the fragmenting unit has water feed means for supplying water into the fragmenting tank.   
   
   
       14 . The pulp making device of the used paper recycling apparatus of  claim 12 ,
 wherein shredder means is provided at the used paper feed port of the fragmenting tank, and the used paper supplied into the used paper feed port is preliminarily shredded by the shredder means, and is agitated by the agitating means.   
   
   
       15 . The pulp making device of the used paper recycling apparatus of  claim 12 ,
 wherein in the used paper pulp circulation route, the fragmenting tank of the fragmenting unit is included, and when executing the beating method, the agitating means of the fragmenting unit is driven and controlled.   
   
   
       16 . The pulp making device of the used paper recycling apparatus of  claim 15 ,
 wherein in the used paper pulp circulation route, a bypass route including a reserve tank for storing the used paper pulp beaten by the beating means is connected by way of changeover means, and   when executing the beating method, the changeover means is driven and controlled so as to change over and use the fragmenting tank of the fragmenting unit and the reserve tank of the bypass route selectively.   
   
   
       17 . A used paper recycling apparatus comprising, in an apparatus case of furniture size, a pulp making unit for fragmenting and beating the used paper to make used paper pulp, a paper making unit for making the used paper pulp manufactured in the pulp making unit and producing recycled paper, and a device control unit for driving and controlling in cooperation with the pulp making unit and the paper making unit,
 wherein the pulp making unit comprises a fragmenting unit of agitating, crushing and fragmenting the used paper, and a beating unit of beating the used paper fragmented in the fragmenting unit,   the beating unit forms a used paper pulp circulation route by disposing at least one beating means for beating the used paper pulp, includes circulating means for circulating the used paper pulp in the used paper pulp circulation route, and beating control means for controlling in cooperation with the beating means and the circulating means,   the beating means is formed as a grinder having a pair of beating disks rotating relatively, beating action surfaces of the beating disks are disposed oppositely across a tiny beating gap, and   the beating control means is configured to control the beating means and the circulating means, for executing the beating process of the used paper pulp after beating process by the beating means while circulating in the used paper pulp circulation route, and adjusting the beating gap between the beating action surfaces to be narrower gradually from the beginning till the end of the beating process.   
   
   
       18 . The used paper recycling apparatus of  claim 17 , further comprising:
 pulp concentration adjusting means for adjusting the concentration of the used paper pulp supplied in the paper making unit, by adjusting the mixing rate of the used paper and the water charged in the apparatus.   wherein the pulp concentration adjusting means includes beating concentration adjusting means for adjusting the beating concentration of the used paper pulp in the pulp making unit corresponding to the beating efficiency by the beating means, paper making concentration adjusting means for adjusting the paper making concentration of the used paper pulp in the pulp making unit corresponding to the finished paper quality of the recycled paper to be recycled, and pulp concentration control means for driving and controlling in cooperation with the beating concentration adjusting means and the paper making concentration adjusting means.   
   
   
       19 . The used paper recycling apparatus of  claim 18 ,
 wherein the paper making concentration adjusting means includes division extracting means for extracting a division only for a specified small portion out of the whole volume of the used paper pulp manufactured in the pulp making section in the preceding process, suspension preparing means for preparing a pulp suspension of a specified concentration by adding a specified amount of water for concentration adjustment to the specified small portion of the used paper pulp divided and extracted by the division extracting means, and paper making concentration control means for driving and controlling in cooperation with the division extracting means and the suspension preparing means.   
   
   
       20 . The used paper recycling apparatus of  claim 18 ,
 wherein the pulp concentration adjusting means is of weight type for adjusting the mixing rate of the used paper and the water charged into the apparatus by weight measurement, and adjusting the concentration of the used paper pulp to be supplied in the paper making unit.