JP2011183362A - Solid-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid-liquid separator, which simplifies a device configuration and a solid-liquid separating process, reduces power costs, and facilitates installation to a construction site or the like. <P>SOLUTION: In the solid-liquid separator 1 having a water absorption conveyer 2 separating a solid content Wb and a liquid content Wa from an object W to be conveyed using a solid-liquid mixture as the object W to be conveyed, the water absorption conveyer 2 includes a roller part 3 consisting of a pair of rollers 4a, 4b, two rotation belts 5, 5 hung around between the roller parts 3 in an axial direction of the roller 4a(4b) at a predetermined interval, a plurality of water absorption sheets 11 in which one end 11a is held by the rotation belts 5, 5, and at the same time, the other end 11b turns to a free end and is laid between two rotation belts 5, 5 to form a water absorption belt 10 together with a circulating route Y of the rotation belts 5, 5, and a pair of wastewater rollers 15a, 15b nipping the water absorption sheets 11 to drain from the water absorption sheets 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a solid-liquid separation device that separates a solid component and a liquid component from a solid-liquid mixture discharged at a construction site, a factory, or the like.

  As a conventional solid-liquid separation device, for example, there is one disclosed in Patent Document 1 below. This solid-liquid separator is provided with a slurry storage drum in which a large number of liquid passage slits are formed in the peripheral wall in the casing. The slurry storage drum is provided with a slurry pressure cylinder and a check valve for discharging sludge. In addition, a negative pressure suction chamber is disposed outside the liquid passage slit of the slurry storage drum via a filter body, and the slurry storage drum is connected to a vacuum pump via the negative pressure suction chamber and drained. Connected to the aisle. In addition, a slurry pressure valve is connected to the slurry pressure cylinder.

  According to the above-described solid-liquid separation device (disclosed in Patent Document 1 below), slurry such as waste mud discharged at a construction site or a factory is turned into solid liquid (liquid) and solid particles (solid). When separating the slurry, first, the slurry is fed from the slurry tank to the screen at the upper part of the casing by the slurry pump through the feed passage, and the coarse particles such as gravel are separated and only the slurry is stored in the slurry storage drum. . Next, the casing is pressurized to the maximum allowable pressure in the slurry storage drum through the repeated operation of the slurry pressurization cylinder by the slurry pressurization valve provided in the slurry pressurization cylinder attached to the slurry storage drum. The clarified water is allowed to pass through the liquid passage slit formed in the peripheral wall of the drum, and the solid particles remain in the slurry storage drum for solid-liquid separation.

  Further, according to the solid-liquid separation device (disclosed in Patent Document 1) described above, a predetermined negative pressure is applied from the vacuum pump to the negative pressure suction chamber provided outside the slurry storage drum. Then, the clarified water of the slurry is sucked and discharged, and the slurry is separated into clarified water and solid particles by the synergistic action of the pressure filtration and the negative pressure suction filtration. In the negative pressure suction chamber, air is supplied when a predetermined amount of clarified water is discharged by the float valve, and the clarified water in the negative pressure suction chamber is discharged from the drainage passage via a drain pump or the like. The solid particle sludge in the slurry storage drum is discharged to a belt conveyor or the like at a predetermined pressure by the check pressure adjusting mechanism of the sludge discharge check valve.

JP-A-6-39214

  However, conventional solid-liquid separation devices require large power such as filter press, decanter, screw press, centrifugal separation, vacuum dehydration, and thermal drying, and there are multiple steps for solid-liquid separation. Each of them needed power. For example, in the case of the solid-liquid separator disclosed in Patent Document 1, the slurry is supplied into the slurry storage drum, pressurized by the slurry pressurizing cylinder, the negative pressure is applied to the negative pressure suction chamber, the air is supplied, and the sludge is discharged. It required power such as pressurization for the power cost. In addition, the configuration of the apparatus becomes complicated and large due to the fact that a plurality of steps are required for solid-liquid separation, and complicated work is required when assembling and installing locally at a construction site or the like.

  Therefore, the present invention has been made in view of the above situation, and provides a solid-liquid separation device that simplifies the device configuration and the solid-liquid separation process, reduces power costs, and is easy to install on a construction site. The purpose is that.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The solid-liquid separation device according to the first aspect of the present invention separates the solid component Wb and the liquid component Wa from the transported object W while transporting the transported object W using the solid-liquid mixture as the transported object W. In the solid-liquid separator 1 having the water-absorbing and conveying means 2,
The water absorbing and conveying means 2
A roller section 3 comprising at least a pair of rollers 4a and 4b;
Two rotation bands 5 and 5 that are wound around the roller portion 3 at a predetermined interval in the axial direction of the roller 4a (4b) and circulate by rotation of the roller portion 3;
One end portion 11a is held by the rotary bands 5 and 5 and the other end portion 11b is a free end and is laid between the two rotary bands 5 and 5 along the circulation path of the rotary bands 5 and 5. A plurality of water-absorbing sheets 11 forming a water-absorbing and conveying belt 10 for the article to be conveyed W side by side;
A pair of drainage rollers 15a and 15b disposed at predetermined positions in the circulation path of the rotating belts 5 and 5 and sandwiching the water absorbent sheet 11 forming the water absorbent transport belt 10 and draining from the water absorbent sheet 11;
It is characterized by having.

  The solid-liquid separator according to claim 2, wherein the adjacent ones of the plurality of water absorbing sheets 11 forming the water absorbing and conveying belt 10 are positioned in front of the rotation direction Y of the rotating bands 5 and 5. The other end portion 11b is arranged so as to overlap the one end portion 11a of the water absorbent sheet 11 located behind the circulation direction Y.

The solid-liquid separation device according to claim 3 further includes water absorption assisting means 20 disposed above the water absorption conveying means 2 and assisting in the solid-liquid separation of the object to be conveyed W,
The water absorption assisting means 20 includes
A roller portion 21 including at least a pair of rollers 22a and 22b;
Two rotation bands 23, 23 that are wound around the roller portion 21 at a predetermined interval in the axial direction of the roller 22 a (22 b) and circulate by rotation of the roller portion 21;
One end 31a is held by the rotation bands 23, 23 and the other end 31b is a free end and is laid between the two rotation bands 23, 23, along the circulation path of the rotation bands 23, 23. A plurality of water absorbing sheets 31 forming a water absorbing belt 30 side by side;
A pair of draining rollers 34a, 34b disposed at predetermined positions in the circulation path of the rotating belts 23, 23, sandwiching the water absorbing sheet 31 forming the water absorbing belt 30 and draining from the water absorbing sheet 31;
It is characterized by having.

  In the water absorption assisting means 20, the adjacent ones of the plurality of water absorption sheets 31 forming the water absorption belt 30 are arranged in front of the water absorption sheet 31 in the circulation direction Y ′ of the rotation bands 23, 23. You may arrange so that the other end part 31b may overlap with the said one end part 31a of the water absorbing sheet 31 located in the back of the said circulation direction Y '.

  The solid-liquid separator according to claim 4 is characterized in that the water-absorbing sheets 11 and 31 are detachably held on the rotary bands 5, 5, 23, and 23.

  According to the present invention, it is possible to perform solid-liquid separation by using a solid-liquid mixture as a transported object and transporting the transported object on a water absorbent transport belt composed of a plurality of water absorbent sheets. Thereby, solid-liquid separation can be performed continuously and efficiently. In addition, the apparatus configuration and the solid-liquid separation process are simplified, and the installation at a construction site or the like is facilitated, and the power necessary for the solid-liquid separation is only the conveyance power, so that the power cost can be reduced.

  Moreover, the adjacent thing of the some water absorbing sheet | seat which forms a water absorption conveyance belt overlaps, and a water absorption conveyance belt can be formed without a clearance gap.

  Further, the water absorption assisting means including the water absorption belt made of the water absorption sheet is provided above the water absorption conveyance means, so that the object to be conveyed (solid-liquid mixture) conveyed to the water absorption conveyance means is disposed. The liquid remaining on the upper surface can be absorbed. Thereby, more reliable solid-liquid separation becomes possible.

  Moreover, each water absorption sheet | seat of a water absorption conveyance means and a water absorption auxiliary | assistant means is detachably hold | maintained at a rotation belt, and replacement | exchange of a water absorption sheet becomes easy. Thereby, for example, when a part of the water absorbent sheet is broken, it can be easily replaced.

It is a front view which shows 1st embodiment of the solid-liquid separator by this invention. (A) It is a top view which shows the water absorbing sheet with which the same embodiment is provided. (B) It is a front view which shows the water absorption sheet with which the embodiment is provided. It is explanatory drawing which shows the draining operation | movement by a pair of draining roller with which the same embodiment is provided. It is a front view which shows 2nd embodiment of the solid-liquid separator by this invention.

Embodiments of the present invention will be specifically described below with reference to the drawings.
The solid-liquid separation device according to the present invention is installed at a construction site, a factory, and the like, and a solid-liquid mixture such as sludge discharged from the solid-liquid separator is used as a transported object. It is a device that separates liquid components.

"First embodiment"
First, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, a solid-liquid separation device 1 (1A) has a water-absorbing and conveying conveyor 2 as a water-absorbing and conveying means for conveying a solid-liquid mixture such as sludge as a conveyed object W in a predetermined direction. It is a necessary configuration requirement.

  The water-absorbing and conveying conveyor 2 is wound around a roller portion 3 composed of a pair of rollers 4a and 4b and a roller portion 3, that is, a pair of rollers 4a and 4b at a predetermined interval in the axial direction of the roller 4a (4b). The two rotation zones 5 and 5 are provided.

  One of the pair of rollers 4a and 4b of the roller unit 3 is set as a driving roller 4a, and the other is set as a driven roller 4b. The driving roller 4a is connected to a driving source such as a motor (not shown), and rotates in a predetermined direction when receiving a driving force from the driving source. The pair of rollers 4a and 4b are supported by a frame (not shown) of the solid-liquid separator 1A.

  The rotation bands 5 and 5 are composed of roller chains and circulate in a predetermined direction by the rotation of the drive roller 4a. Further, as shown in FIG. 2A, a connecting member 6 is installed between the two rotating bands 5 and 5 so as to connect the rotating bands 5 and 5. A plurality of connecting members 6 are provided side by side with a predetermined interval along the circulation path of the rotary bands 5 and 5. At both ends of the connecting member 6, that is, on the portions located on the rotation bands 5, 5, mounting hooks 7, 7 formed so as to be bent so that the front ends thereof in the circulation direction Y of the rotation bands 5, 5 are provided. ing.

  Moreover, the water absorption conveyance conveyor 2 is provided with the water absorption conveyance belt 10 which forms the conveyance surface, when conveying the to-be-conveyed object W. As shown in FIG. The water absorption conveyance belt 10 includes a plurality of water absorption sheets 11. As shown in FIG. 2A, the water absorbent sheet 11 includes a substantially rectangular sheet body 12, and a reinforcing member 13 provided to reinforce the rigidity of the front edge of the circulation direction Y of the sheet body 12. It is composed of Both ends of the reinforcing member 13, that is, portions located on the rotation bands 5, 5 are provided with substantially rectangular mounting holes 14, 14 for engaging with the attachment hooks 7, 7 of the rotation bands 5, 5. ing. The water absorbent sheet 11 is detachably held on the rotary bands 5 and 5 by the engagement between the mounting holes 14 and 14 of the water absorbent sheet 11 and the mounting hooks 7 and 7 of the rotary bands 5 and 5. In addition, the plurality of water absorbent sheets 11 are laid between the two rotating bands 5 and 5 with one end 11a held by the rotating bands 5 and 5 and the other end 11b being a free end. . As shown in FIG. 1, the plurality of water absorbent sheets 11 are arranged along the circulation path Y of the rotary bands 5 and 5 to form the water absorbent transport belt 10 as described above. At this time, the adjacent ones of the plurality of water-absorbing sheets 11 are such that the other end portion 11b of the water-absorbing sheet 11 located in front of the circulating direction Y of the rotating bands 5 and 5 is the rear of the rotating bands 5 and 5 in the circulating direction Y. It arranges so that it may overlap with the one end part 11a of the water absorption sheet | seat 11 located in this.

  For the sheet body 12 of the water absorbent sheet 11, a water absorbent sponge whose pore diameter is strictly controlled is used. Preferable examples of the water absorbing sponge include polyvinyl alcohol sponge (PVA sponge). Some types of PVA sponges have a pore size of 80 to 700 μm, and can be appropriately selected according to the size of solid particles of the solid-liquid mixture. The PVA sponge has a high porosity of 90%, has a low pressure loss when the liquid component passes, and can hold a large volume of liquid component. In addition, since the capillary phenomenon is generated by the fine pores extending vertically and horizontally, it is excellent in self-water absorption and water retention.

  Furthermore, the water absorption conveyance conveyor 2 is provided with a pair of drainage rollers 15 a and 15 b for draining water from a plurality of water absorption sheets 11 forming the water absorption conveyance belt 10. The pair of drain rollers 15a and 15b are disposed at predetermined positions in the circulation path of the rotary bands 5 and 5. Specifically, as shown in FIG. 1, it is provided on the lower side of the water-absorbing and conveying conveyor 2, that is, on the non-conveying surface side opposite to the conveying surface of the water-absorbing and conveying belt 10. The drainage roller 15b is provided so as to sandwich the water absorbent sheet 11. Further, the pair of drain rollers 15a and 15b fix one drain roller 15a, make the other drain roller 15b movable up and down, and suitably squeeze the water absorbing sheet 11 sandwiched between the movable drain rollers 15b. Tension is applied upward.

  As shown in FIG. 1, a drainage tank 16 for receiving the liquid component Wa of the article W to be transported discharged from the water absorbent sheet 11 by a pair of drain rollers 15a and 15b is installed below the water absorbent conveyor 2. Yes.

  Further, as shown in FIG. 1, a scraper 17 for receiving the solid content Wb of the article W to be transported conveyed by the water absorbent conveyance belt 10 (water absorbent sheet 11) is disposed in front of the water conveyance conveyor 2 in the circulation direction Y. Is provided. The scraper 17 slightly contacts one end portion 17a with the water absorbent sheet 11 so as to scrape off the solid content Wb on the circulating water absorbent conveyance belt 10. The other end 17b of the scraper 17 is opened to discharge the scraped solid content Wb to the outside.

  Further, as shown in FIG. 1, in order to reinforce the rigidity of the water absorbing and conveying belt 10 (water absorbing sheet 11) at the carrying-in portion (the portion appearing on the left side in FIG. 1) of the article W to be conveyed in the water absorbing and conveying conveyor 2. A reinforcing member 18 is provided. The reinforcing member 18 is formed of a plate-like member such as a punching metal, and supports the water absorbing sheet 11 on its upper surface to prevent the water absorbing sheet 11 from being bent when receiving the article to be conveyed W. In addition, the reinforcing member 18 may have a configuration in which, for example, a plurality of pipe members are arranged along the circulation direction Y of the rotation bands 5 and 5. If comprised in this way, the frictional resistance of the water absorbing sheet | seat 11 to circulate can be reduced.

From here, the process of the solid-liquid separation by the solid-liquid separation apparatus 1A will be described.
As shown in FIG. 1, a solid-liquid mixture is continuously carried in by the operator etc. to the carrying-in part of the water absorption conveyance conveyor 2 which appears on the left side of FIG. In the water absorption conveyance conveyor 2, the carried solid-liquid mixture is conveyed in the circulation direction Y of the rotation zones 5 and 5 as the object to be conveyed W. At this time, the plurality of water-absorbing sheets 11 forming the water-absorbing and conveying belt 10 absorb the liquid component Wa from the conveyed object W by capillary action, and only the solid component Wb remains on the water-absorbing sheet 11. Therefore, the water absorption conveyance conveyor 2 conveys the solid component Wb on the water absorption sheet 11 and conveys the liquid component Wa in the water absorption sheet 11.

  The water-absorbing and conveying conveyor 2 scrapes off the solid content Wb of the conveyed object W from the water-absorbing sheet 11 with a scraper 17 and discharges the solid content Wb to a solid storage tank (not shown) through the scraper 17.

  As shown in FIG. 3, the water absorbent sheet 11 that has absorbed the liquid component Wa of the conveyed object W is sandwiched between the pair of drain rollers 15a and 15b while circulating along the circulation path. As the water absorbent sheet 11 circulates while being compressed, the liquid component Wa in the water absorbent sheet 11 is pushed toward the other end portion 11b located behind the circulation direction Y. Thus, the liquid component Wa is discharged from the other end portion 11 b of the water absorbent sheet 11 to the drain tank 16.

  The solid-liquid separation device 1A separates the solid component Wb and the liquid component Wa from the solid-liquid mixture (conveyed object W) by continuously repeating the above-described steps.

  In addition, the inventors of the present invention conducted an experiment for solid-liquid separation of the distillation waste liquid of shochu shochu using the above-described first embodiment (solid-liquid separation device 1A). In this experiment, 100 g of distilled waste liquid was transported by the water-absorbing transport conveyor 2, and then the weight of the solid content of the distilled waste liquid scraped off by the scraper 17 was measured. And this was implemented 10 times and the average value was computed.

  As a result of the experiment, as shown in Table 1 above, it was demonstrated that about 50% of the liquid content was recovered and about 50% of the solid content was recovered.

  According to the first embodiment described above, a solid-liquid mixture is used as a transported object W, and solid-liquid separation is achieved by simply transporting the transported object W on a water absorbent transport belt 12 composed of a plurality of water absorbent sheets 11. It becomes possible. Thereby, solid-liquid separation can be performed continuously and efficiently. In addition, the apparatus configuration and the solid-liquid separation process are simplified, and the installation at a construction site or the like is facilitated, and the power necessary for the solid-liquid separation is only the conveyance power, so that the power cost can be reduced. As a result, initial costs, running costs, etc. can be significantly reduced.

  Moreover, the adjacent thing of the some water absorbing sheet 11 which forms the water absorption conveyance belt 12 can overlap, and the water absorption conveyance belt 12 can be formed without a clearance gap.

  Further, the plurality of water absorbent sheets 11 are held by the two rotating bands 5 and 5 respectively, so that the water absorbent sheet 11 is displaced or slipped and the rollers 4a and 4b while the solid-liquid separator 1A is operating. It is possible to suppress the occurrence of problems such as rotation failure and abnormal wear of the rollers 4a and 4b.

  Further, since the water absorbent sheet 11 is detachably held on the rotary bands 5 and 5, the water absorbent sheet 11 can be easily replaced. Thereby, for example, when the water absorbent sheet 11 is broken, it can be easily replaced. In this case, it is not necessary to replace the entire water-absorbing / conveying belt 12, and only the broken water-absorbing sheet 11 needs to be replaced. Therefore, the cost is reduced and the cost for maintenance can be reduced.

  For example, when the water-absorbing / conveying belt 12 is constituted by a single sheet of water-absorbing sheet, if the drainage is forcedly discharged from the water-absorbing / conveying belt 12 (water-absorbing sheet) with the pair of drain rollers 15a and 15b described above, A reverse flow phenomenon of the liquid component occurs in the sheet, and the liquid component becomes saturated with time. However, in the first embodiment described above, the water absorbent transport belt 12 is formed by a plurality of water absorbent sheets 11, so that water can be drained from each end (the other end 11 b) of each water absorbent sheet 11.

"Second embodiment"
Next, a second embodiment of the present invention will be described with reference to FIG.
In the second embodiment, the same or similar parts as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 4, the solid-liquid separation device 1 (1B) includes a water absorption auxiliary conveyor 20 as a water absorption auxiliary means that is disposed above the water absorption conveyance conveyor 2 and assists the solid-liquid separation of the object to be conveyed. It has the water absorption conveyance conveyor 2 and the water absorption auxiliary conveyor 20 as main component requirements.

  The water absorption auxiliary conveyer 20 is hung between the roller portion 21 composed of a pair of rollers 22a and 22b and the roller portion 21, that is, the pair of rollers 22a and 22b with a predetermined interval in the axial direction of the roller 22a (22b). Two rotating bands 23, 23.

  One of the pair of rollers 22a and 22b of the roller section 21 is set as a driving roller 22a, and the other is set as a driven roller 22b. Although not shown, the drive roller 22a is interlocked with the drive roller 4a of the water-absorbing and conveying conveyor 2 by a roller chain or the like, and rotates in synchronization with the rotation of the drive roller 4a. At this time, the rotation direction of the drive roller 22a is opposite to the rotation direction of the drive roller 4a. The pair of rollers 22a and 22b is supported by a frame (not shown) of the solid-liquid separator 1B.

  The rotation bands 23 and 23 are made of roller chains and circulate in a predetermined direction by the rotation of the drive roller 22a. The circulation direction Y ′ of the rotation bands 23, 23 is opposite to the circulation direction Y of the rotation bands 5, 5 of the water absorbent transport conveyor 2. In addition, the two rotation bands 23 and 23 are connected with a connecting member so as to connect the rotation bands 23 and 23 between the rotation bands 5 and 5 described with reference to FIG. Yes. A plurality of connecting members are provided side by side along the circulation path of the rotary bands 23, 23 with a predetermined interval. Furthermore, attachment hooks 24, 24 formed so as to be pointed in the circulation direction Y ′ of the rotation bands 23, 23 are formed at both ends of the connecting member, that is, portions located on the rotation bands 23, 23. Is provided.

  Moreover, the water absorption auxiliary conveyor 20 is provided with a water absorption belt 30 that comes into contact with the upper surface of the article W (see FIG. 1) to be conveyed by the water absorption conveyance conveyor 2. The water absorption belt 30 includes a plurality of water absorption sheets 31. Similarly to the water absorbent sheet 11 described with reference to FIG. 2A, the water absorbent sheet 31 reinforces the rigidity of the substantially rectangular sheet main body 32 and the front edge of the sheet main body 32 in the circulation direction Y ′. And a reinforcing member provided. Both ends of the reinforcing member, that is, portions located on the rotation bands 23, 23 are provided with substantially rectangular attachment holes 33, 33 for engaging with the attachment hooks 24, 24 of the rotation bands 23, 23. Yes. The water absorbing sheet 31 is detachably held on the rotating bands 23, 23 by the engagement between the mounting holes 33, 33 of the water absorbing sheet 31 and the mounting hooks 24, 24 of the rotating bands 23, 23. Further, the plurality of water absorbing sheets 31 are laid between the two rotating bands 23, 23 while the one end 31 a is held by the rotating bands 23, 23 and the other end 31 b is a free end. . As shown in FIG. 4, the plurality of water absorbing sheets 31 form a water absorbing belt 30 side by side along the circulation path Y ′ of the rotation bands 23, 23.

  The adjacent ones of the plurality of water absorbent sheets 31 are arranged with a slight gap in the example of FIG. 4, but like the water absorbent sheet 11 of the water absorbent conveyer 2 described above, the rotating bands 23, 23 are arranged. Even if the other end portion 31b of the water absorbent sheet 31 positioned in front of the circulation direction Y ′ of the rotating belts 23 and 23 is arranged so as to overlap the one end portion 31a of the water absorbent sheet 31 positioned rearward in the circulation direction Y ′ of the rotation bands 23, 23. Good.

  Further, it is desirable to use a water absorbing sponge such as a PVA sponge for the sheet main body 32 of the water absorbing sheet 31 as in the case of the sheet main body 12 of the water absorbing sheet 11 described above.

  Further, the water absorption auxiliary conveyor 20 includes a pair of drain rollers 34 a and 34 b for draining from a plurality of water absorption sheets 31 forming the water absorption belt 30. The pair of drain rollers 34 a and 34 b are disposed at predetermined positions in the circulation path of the rotary bands 23 and 23. Specifically, as shown in FIG. 4, one drainage roller is provided on the upper side of the water absorption auxiliary conveyor 20, that is, on the non-contact surface side opposite to the contact surface with the conveyed object of the water absorption belt 30. 34a and the other draining roller 34b are provided so as to sandwich the water absorbing sheet 31 therebetween. The pair of drain rollers 34a and 34b fixes one drain roller 34a, makes the other drain roller 34b movable up and down, and suitably squeezes the water absorbing sheet 31 sandwiched between the movable drain rollers 34b. Tension is applied upward.

  As shown in FIG. 4, a drainage tank 35 for receiving the liquid content of the object to be transported discharged from the water absorbent sheet 31 by a pair of drainage rollers 34 a and 34 b is installed inside the water absorption auxiliary conveyor 20.

  In addition, as shown in FIG. 4, the solid content of the transported object attached when the water absorbing belt 30 (water absorbing sheet 31) contacts the upper surface of the transported object in front of the circulation direction Y ′ of the water absorbing auxiliary conveyor 20. A sub-scraper 36 is provided to scrape off. The sub scraper 36 has its one end 36 a slightly in contact with the water absorbent sheet 30 with respect to the circulating water absorbent belt 30. The other end 36 b of the sub scraper 36 is open to discharge the scraped solids toward the scraper 17.

From here, the process of the solid-liquid separation by the solid-liquid separation apparatus 1B is demonstrated.
As in the first embodiment described above, the solid-liquid mixture is continuously carried into the carrying-in portion of the water-absorbing and conveying conveyor 2 by an operator or the like. In the water absorption conveyance conveyor 2, the carried solid-liquid mixture is conveyed in the circulation direction Y of the rotation zones 5 and 5 as a conveyance object. At this time, the plurality of water-absorbing sheets 11 forming the water-absorbing and conveying belt 10 absorb the liquid component from the conveyed object by a capillary phenomenon, and only the solid component remains on the water-absorbing sheet 11. Therefore, the water absorption conveyance conveyor 2 conveys the solid component on the water absorption sheet 11 and conveys the liquid component in the water absorption sheet 11. Furthermore, in the solid-liquid separator 1B, the water absorption belt 30 (water absorption sheet 31) of the water absorption auxiliary conveyor 20 disposed above the water absorption conveyance conveyor 2 contacts the upper surface of the object to be conveyed on the water absorption conveyance belt 10. The liquid remaining on the upper surface of the transported object is absorbed by capillary action, and the liquid in the water absorbing sheet 31 is discharged to the drain tank 35 by the pair of drain rollers 34a and 34b. The solid matter of the transported object adhering on the water absorbing sheet 31 is scraped off by the sub scraper 36 and discharged.

  The water-absorbing and conveying conveyor 2 scrapes off the solid content of the object to be conveyed from the water-absorbing sheet 11 with a scraper 17 and discharges the solid content to a solid storage tank (not shown) through the scraper 17.

  The solid-liquid separation device 1B separates the solid component and the liquid component from the solid-liquid mixture (conveyed object) by continuously repeating the above-described steps.

  In addition, the inventors of the present invention conducted an experiment for solid-liquid separation of the distillation waste liquid of shochu shochu using the second embodiment (solid-liquid separation device 1B), as in the first embodiment. . In this experiment, 100 g of distilled waste liquid was transported by the water-absorbing transport conveyor 2, and then the weight of the solid content of the distilled waste liquid scraped off by the scraper 17 and the sub scraper 36 was measured. And this was implemented 10 times and the average value was computed.

  As a result of the experiment, as shown in Table 2 above, it was demonstrated that about 82% of the liquid content was recovered and about 18% of the solid content was recovered. According to this, it turns out that 2nd embodiment (solid-liquid separation apparatus 1B) solid-liquid-separated with high performance rather than 1st embodiment (solid-liquid separation apparatus 1A).

  According to the second embodiment described above, in addition to the same effects as in the first embodiment, the water absorption auxiliary conveyer 20 is disposed above the water absorption conveyer 2 so that the water absorption conveyer 2 can be used. The liquid remaining on the upper surface of the conveyed object (solid-liquid mixture) to be conveyed can be absorbed. Thereby, more reliable solid-liquid separation becomes possible.

DESCRIPTION OF SYMBOLS 1 (1A, 1B) ... Solid-liquid separator 2 ... Water absorption conveyance conveyor as a water absorption conveyance means 3 ... Roller part 4a, 4b ... A pair of roller 5 ... Rotating belt 10 ... Water absorption conveyance belt 11 ... Water absorption sheet 11a ... One end part 11b ... the other end 15a, 15b ... a pair of drainage rollers 20 ... a water absorption assisting conveyor 21 as a water absorption assisting means 21 ... rollers 22a, 22b ... a pair of rollers 23 ... a rotating belt 30 ... a water absorbing belt 31 ... a water absorbing sheet 31a ... one end 31b ... the other end 34a, 34b ... a pair of drainage rollers W ... conveyed object Wa ... liquid component Wb ... solid component Y ... circulation direction

Claims (4)

In a solid-liquid separation device having a water-absorbing and conveying means for separating a solid component and a liquid component from a conveyed object while conveying the conveyed object as a conveyed object,
The water absorbing and conveying means is
A roller portion comprising at least a pair of rollers;
Two rotation bands that are wound around the roller portion at a predetermined interval in the axial direction of the roller and circulate by rotation of the roller portion;
One end portion is held by the rotating belt and the other end portion is a free end, and is laid between the two rotating belts. A plurality of water absorbent sheets to form,
A pair of drainage rollers disposed at a predetermined position in the circulation path of the rotating belt, sandwiching the water absorbent sheet forming the water absorbent transport belt and draining from the water absorbent sheet;
A solid-liquid separation device comprising:   Adjacent ones of the plurality of water absorbing sheets forming the water absorbing conveyance belt, the other end portion of the water absorbing sheet positioned in front of the rotation direction of the rotating band is the rear of the water absorbing sheet positioned in the rear of the circulation direction. The solid-liquid separation device according to claim 1, wherein the solid-liquid separation device is arranged so as to overlap the one end. Furthermore, it has water absorption assisting means disposed above the water absorption conveying means to assist solid-liquid separation of the object to be conveyed,
The water absorption assisting means is
A roller portion comprising at least a pair of rollers;
Two rotation bands that are wound around the roller portion at a predetermined interval in the axial direction of the roller and circulate by rotation of the roller portion;
A plurality of water-absorbing belts having one end held by the rotating belt and the other end being a free end and laid between the two rotating belts to form a water-absorbing belt along the circulation path of the rotating belt Sheet,
A pair of drainage rollers disposed at predetermined positions in the circulation path of the rotating belt and sandwiching the water absorbent sheet forming the water absorbent belt and draining from the water absorbent sheet;
The solid-liquid separator according to claim 1 or 2, further comprising:   The solid-liquid separator according to claim 1, wherein the water-absorbing sheet is detachably held on the rotating belt.

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