JP2004278918A - Screw, separating device using the same, and processing system having separating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To continuously perform the work for separating a mixture of liquid and solid, into the liquid and solid. <P>SOLUTION: This screw is used in the separating device for separating the mixture of the liquid and solid, into the liquid and solid. An inner side of a outer casing member having a number of holes is mounted on a side face of an approximately cylindrical body mounted in the separating device, so that the mixture is held between the cylindrical body and the outer casing member, and the liquid in the mixture is discharged from the holes of the outer casing member. A shaft part extended in the specific direction, a projecting part spirally projected from an outer peripheral face of the shaft part, and an outer peripheral member mounted on an outer peripheral end part of the projecting part, and capable of bringing the inner face of the outer casing member having a number of holes, into contact with the side face of the approximately cylindrical body positioned at an outer peripheral side of the projecting part, are mounted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a screw suitable for a separation device that separates a mixture of a liquid and a solid into a liquid and a solid, a separation device using the screw, and a processing system having the separation device.
[0002]
[Prior art]
Conventionally, as a dehydrator that separates water-containing hydrates from water and solids, for example, inside a cylindrical body having a plurality of small holes formed in the side surface, a screw-like rod-shaped body, 2. Description of the Related Art There is known a dehydrator in which a screw having a protrusion formed in a spiral shape on an outer peripheral surface is rotatably disposed (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent No. 3152648 (FIG. 1)
In such a dehydrator, when the screw rotates inside the cylindrical body, the hydrated substance charged into the cylindrical body is conveyed along the spiral projection of the screw, and the cylindrical body and the screw are rotated. Is dehydrated while being pressed and compressed. At this time, the water removed from the water-containing material flows out through a plurality of small holes formed on the side surface of the tubular body.
[0004]
However, in the conventional dehydrator as described above, since the hydrated material is depressurized by rotating the screw, the small hole of the cylindrical body formed to drain the water removed from the hydrated material is provided. The solids in the hydrate are easily clogged, and the pores of the cylindrical body are blocked by the solids in the hydrate, making it difficult to continue the operation of separating the hydrate into moisture and solids. There was a problem of becoming.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above-mentioned problems of the related art, and an object thereof is to continue an operation of separating a mixture of a liquid and a solid into a liquid and a solid. It is an object of the present invention to provide a screw which can be carried out by a screw, a separation device using the screw, and a processing system having the separation device.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 of the present invention is a screw of a separation device for separating a mixture of a liquid and a solid into a liquid and a solid. It is disposed on the inner diameter side of the exterior member having a large number of holes on the side surface of the substantially cylindrical body provided, sandwiches the mixture between the exterior member and the liquid in the mixture, In the screw to be discharged from the hole, a shaft portion extending in a predetermined direction, a protrusion formed in a spiral shape on the outer peripheral surface of the shaft portion, and disposed at an outer peripheral end of the protrusion, An outer peripheral member having a plurality of holes on the side surface of a substantially cylindrical body located on the outer peripheral side of the projection and having an outer peripheral member capable of abutting against the inner diameter surface of the exterior member.
[0007]
In the invention according to claim 2 of the present invention, in the invention according to claim 1, the outer peripheral member is substantially a rod-shaped body as a whole, and has a length along an axial direction of the exterior member. The projection is disposed on the outer peripheral end of the projection such that the length substantially coincides with the length along the axial direction, and the axial direction coincides with the axial direction of the shaft.
[0008]
According to a third aspect of the present invention, in the first aspect, a cross section of the shaft portion in a direction orthogonal to the axial direction is substantially elliptical.
[0009]
According to a fourth aspect of the present invention, in the invention according to any one of the first, second and third aspects, the mixture is prevented from adhering to the entire screw. In order to perform the processing.
[0010]
According to a fifth aspect of the present invention, in the invention according to any one of the first, second, third, and fourth aspects, the shaft portion is provided at a lower end side. The thickness is gradually changed so that the thickness is the thinnest and the thickness at the upper end side is the thickest.
[0011]
According to a sixth aspect of the present invention, in the invention according to any one of the first, second, third, fourth and fifth aspects of the present invention, The interval in the direction along the axial direction of the shaft portion is such that the interval near the upper end of the shaft portion is smaller than the interval near the lower end side of the shaft portion.
[0012]
According to a seventh aspect of the present invention, there is provided a separation device having the screw according to any one of the first, second, third, fourth, fifth and sixth aspects. In the device, the screw is located on the inner side of the outer member, and the second screw is located on the inner diameter side, and the second outer member includes a tightening coil spring in which a metal wire is wound in a coil shape with a constant inner diameter. Things.
[0013]
According to an eighth aspect of the present invention, there is provided a separation device according to the seventh aspect, a pretreatment device disposed in a preceding stage of the separation device and performing a pretreatment on the mixture, and the separation device. And a pretreatment device that is disposed at the subsequent stage and performs posttreatment on the mixture.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an example of an embodiment of a screw, a separation device using the screw, and a processing system having a separation device according to the present invention will be described in detail with reference to the accompanying drawings.
[0015]
Here, FIG. 1 is a schematic configuration explanatory view showing an example of a separation device provided with an example of an embodiment of the screw according to the present invention. In FIG. 1, only the main body case 12 of the separation device 10 is shown as transparent for ease of explanation.
[0016]
The separation device 10 includes a substantially cylindrical body 12 having a hollow interior 12 a, a screw 14 disposed in the interior 12 a of the body case 12, and a lower portion located on the outer peripheral side of the lower end 14 e of the screw 14. It has an exterior member 16 and an upper exterior member 18 located on the outer peripheral side of the upper end 14f side of the screw 14.
[0017]
Here, the main body case 12 has an inlet 12b and a lower outlet 12c formed at opposing positions on the lower side, and an upper outlet 12d formed on the upper side. An introduction duct 20 communicating with the inside 12a of the main body case 12 through the introduction port 12b extends from the introduction port 12b of the main body case 12, and the lower discharge port 12c has a lower discharge port 12c. A lower discharge duct 22 that communicates with the inside 12a of the main body case 12 through the upper portion extends, and an upper discharge duct 12d communicates with the inside 12a of the main body case 12 through the upper discharge port 12d. 24 are extended.
[0018]
The screw 14 is formed entirely in a screw-like rod-like body. More specifically, the screw 14 has a substantially elliptical cross section in a direction orthogonal to the axial direction, and a spiral shape formed on the outer peripheral surface 14aa of the shaft 14a. And a peripheral member 14d disposed at an outer peripheral end 14c of the projection 14b (see FIGS. 4A and 5).
[0019]
The entire screw 14, that is, the outer peripheral surface 14aa of the shaft portion 14a, the surface 14bb of the projection 14b, and the surface 14dd of the outer peripheral member 14d are processed to prevent the mixture from adhering. As the process for preventing the adhesion of the screw 14, for example, embossing can be used.
[0020]
The thickness of the shaft portion 14a of the screw 14 is gradually changed so that the thickness at the lower end 14e is the thinnest and the thickness at the upper end 14f is the thickest. That is, as compared with the area of a substantially elliptical cross-sectional shape in the direction orthogonal to the axial direction near the lower end 14e side (see FIG. 4B), the cross-sectional shape in the direction orthogonal to the axial direction near the upper end 14f side. The area of a certain substantially elliptical shape (see FIG. 4C) is larger.
[0021]
The protrusion 14b of the screw 14 is formed in a spiral shape on the outer peripheral surface 14aa of the shaft 14a like a screw thread, and more specifically, the axis of the shaft 14a extends from the lower end 14e of the shaft 14a. When viewed along the direction, the shaft portion 14a is spirally formed in a direction in which the shaft portion 14a turns counterclockwise and rises to the upper end 14f.
[0022]
When viewed from the lower end 14e of the shaft portion 14a along the axial direction of the shaft portion 14a, the shape of the protrusion 14b is substantially a circle, and the diameter R of the circle (see FIG. 4B); That is, the size of the protrusion 14b in the direction orthogonal to the axial direction of the shaft portion 14a is set such that the screw 14 can be disposed on the inner diameter side 16d of the lower exterior member 16 and the inner diameter side 18a of the upper exterior member 18 described later. The dimensions are set.
[0023]
Further, the interval W2 in the vicinity of the upper end 14f of the protrusion 14b in the direction along the axial direction of the shaft 14a is smaller than the interval W1 in the vicinity of the lower end 14e of the shaft 14a (FIG. 4 (a)).
[0024]
The entire outer peripheral member 14d of the screw 14 is formed in a substantially rod-like body, and the axial direction of the outer peripheral member 14d is set at the outer peripheral end 14c of the protrusion 14b near the lower end 14e side of the shaft 14a. They are arranged so as to coincide with the axial direction. The length L1 of the outer peripheral member 14d along the axial direction (see FIG. 4A) substantially matches the length L2 of the lower exterior member 16 described later along the axial direction (see FIG. 2). Dimensions are set.
[0025]
A driving device 26 such as a motor is disposed on the lower end 14e side of the shaft portion 14a of the screw 14, and is rotatable around the axis of the shaft portion 14a by the driving force of the driving device 26. The tip 14g of the upper end 14f of the shaft 14a of the screw 14 is locked with a predetermined allowance in a locking portion (not shown) formed in the main body case 12, and the screw 14 rotates. Sometimes swingable.
[0026]
The lower exterior member 16 is entirely formed in a substantially cylindrical body, and has a large number of holes 16b formed in the side surface 16a and a cutout portion 16c in which a part of the side surface 16a is cut out. The lower exterior member 16 can be formed using, for example, a mesh formed of a metal material, a punching metal, or the like.
[0027]
The lower exterior member 16 is fixedly disposed on the bottom 12g of the main body case 12 so as to cover the outer peripheral end 14c of the protrusion 14b near the lower end 14e of the shaft 14a of the screw 14. . At this time, the cutout portion 16 c of the lower exterior member 16 is located near the inlet 12 b of the main body case 12.
[0028]
The inner diameter of the lower exterior member 16 is dimensioned such that the outer peripheral member 14d disposed at the outer peripheral end 14c of the projection 14b of the screw 14 abuts on the inner diameter side 16d of the lower exterior member 16. (See FIG. 3).
[0029]
On the other hand, the upper exterior member 18 is formed by a coil spring. More specifically, the upper exterior member 18 is a tight coil spring formed by winding a metal wire having a circular cross section in a coil shape with a fixed inner diameter, and the winding direction of the coil spring is The projection 14b of the screw 14 located on the inner diameter side 18a of the upper exterior member 18 coincides with the direction in which the projection is formed in a spiral shape. That is, when viewed from the lower end 14e of the shaft portion 14a in the axial direction of the shaft portion 14a, the coil spring as the upper exterior member 18 is wound in a direction in which the shaft portion 14a turns counterclockwise and rises to the upper end 14f. It is.
[0030]
The inner diameter of the coil spring, which is the upper outer member 18, is formed so as to substantially match the inner diameter of the lower outer member 16. The upper outer member 18 is disposed above the lower outer member 16, and It is located on the outer peripheral side near the upper end 14f side.
[0031]
Note that, since the upper exterior member 18 is formed of a tightening coil spring, in a state where the tightening coil spring is not elastically deformed, the metal wires wound in a coil shape to form the tightening coil spring are in close contact with each other, and The side surface 18b of the base 18 is formed (see FIG. 6B). That is, the side surface 18b of the upper exterior member 18 is not formed in a single plate shape, but is a tangential portion 18c where metal wires that are in close contact with each other to form a tight coil spring are in contact with each other (see FIG. 6A). ).
[0032]
A guide member 28 which is entirely formed in a substantially cylindrical body is provided at the upper end 18 e of the upper exterior member 18. The inner diameter of the guide member 28 is formed so as to substantially match the inner diameter of the upper exterior member 18. An opening 28a is formed near the upper discharge port 12d of the main body case 12 of the guide member 28. An upper projection 14h is formed on the upper end 14f of the shaft portion 14a of the screw 14 so as to be able to contact the inner diameter surface 28b of the guide member 28.
[0033]
In the above configuration, in order to separate the mixture of the liquid and the solid into the liquid and the solid using the separation device 10 described above, first, the driving device 26 is driven to rotate the screw 14 around the axis. More specifically, when viewed from the lower end 14e of the shaft portion 14a in the axial direction of the shaft portion 14a, the shaft portion 14a is rotated in a counterclockwise direction around the axis of the shaft portion 14a (see the arrow D direction shown in FIG. 6C). .
[0034]
Then, the mixture in which the liquid and the solid are mixed is introduced from the introduction port 12b of the main body case 12 to the inside 12a of the main body case 12 through the introduction duct 20.
[0035]
At this time, the mixture located in the introduction duct 20 is pushed by the mixture which is newly introduced sequentially into the introduction duct 20, passes through the introduction port 12 b of the main body case 12, and moves to the lower portion located near the introduction port 12 b. It moves from the notch 16c of the exterior member 16 to the inner diameter side 16d of the lower exterior member 16.
[0036]
Here, the mixture that has moved to the inner diameter side 16d of the lower exterior member 16 has the protrusion 14b of the rotating screw 14 because the screw 14 is rotating in the direction of arrow D shown in FIG. Get caught. Then, the mixture entrained by the screw 14 is held in the space E1 (see FIG. 2) between the shaft portion 14a of the screw 14 and the lower exterior member 16.
[0037]
Further, the mixture held in the space E1 is placed on the helically formed protrusion 14b with the rotation of the screw 14, and moves from the lower end 14e to the upper end 14f of the shaft 14a. It is conveyed and pressurized and compressed.
[0038]
As a result, in the space E1 between the shaft portion 14a of the screw 14 and the lower exterior member 16, the mixture is compressed, and the liquid in the mixture, in particular, the mixed water that is simply mixed with the solid in the mixture. Liquid is removed from the mixture.
[0039]
Then, the liquid removed from the mixture held in the space E1 forms a large number of holes 16b formed in the side surface 16a of the lower exterior member 16 from the space E1 between the shaft portion 14a and the lower exterior member 16. Then, it is discharged to the outside of the lower exterior member 16. The liquid discharged from the hole 16b of the lower exterior member 16 moves downward according to gravity, reaches the lower discharge port 12c, and is discharged from the lower discharge duct 22 to the outside of the separation device 10.
[0040]
On the other hand, in the space E1 between the shaft portion 14a of the screw 14 and the lower exterior member 16, the mixture from which the liquid such as the mixed water has been removed and dehydrated, further rotates with the rotation of the screw 14, and the shaft portion 14a It is conveyed toward the upper end 14f, and is held in the space E2 (see FIG. 2) between the shaft portion 14a of the screw 14 and the lower end 18d of the upper exterior member 18.
[0041]
Then, the mixture held in the space E2 is placed on the helically formed protrusion 14b with the rotation of the screw 14, and moves from the lower end 14e to the upper end 14f of the shaft 14a. It is conveyed and pressurized and compressed.
[0042]
As a result, in the space E2 between the shaft portion 14a of the screw 14 and the lower end 18b of the upper exterior member 18, the mixture is compressed, and the liquid in the mixture, in particular, the solid adhered to the solid in the mixture. A liquid such as water is removed from the mixture.
[0043]
Then, the liquid removed from the mixture held in the space E2 is supplied from the space E2 between the shaft portion 14a and the lower end 18d of the upper exterior member 18 with the tightening coil spring forming the side surface 18b of the upper exterior member 18. Are discharged to the outside of the upper exterior member 18 through the tangent portions 18c where they are in contact with each other. Then, the liquid discharged from the gap 18c of the upper exterior member 18 moves downward according to gravity, reaches the lower discharge port 12c, and is discharged from the lower discharge duct 22 to the outside of the separation device 10.
[0044]
On the other hand, in the space E2 between the shaft portion 14a of the screw 14 and the lower end 18d side of the upper exterior member 18, the mixture, from which the liquid such as the attached water has been removed and dehydrated, further rotates with the rotation of the screw 14, It is conveyed toward the upper end 14f of the shaft 14a, and is confined in the space E3 (see FIG. 2) between the shaft 14a of the screw 14 and the upper end 18e of the upper exterior member 18.
[0045]
Then, the mixture held in the space E3 is placed on the spiral projection 14b with the rotation of the screw 14, and moves from the lower end 14e to the upper end 14f of the shaft 14a. It is conveyed and pressurized and compressed.
[0046]
As a result, in the space E3 between the shaft portion 14a of the screw 14 and the upper end 18e side of the upper exterior member 18, the mixture is compressed and exists in the structure of the liquid in the mixture, in particular, the solid in the mixture. Liquid, such as tissue water, is removed from the mixture.
[0047]
Then, the liquid removed from the mixture held in the space E <b> 3 flows from the space E <b> 3 between the shaft portion 14 a and the upper end 18 e of the upper exterior member 18 to the tightening coil spring forming the side surface 18 b of the upper exterior member 18. Are discharged to the outside of the upper exterior member 18 through the tangent portions 18c where they are in contact with each other. Then, the liquid discharged from the gap 18c of the upper exterior member 18 moves downward according to gravity, reaches the lower discharge port 12c, and is discharged from the lower discharge duct 22 to the outside of the separation device 10.
[0048]
On the other hand, in the space E3 between the shaft portion 14a of the screw 14 and the upper end 18e of the upper exterior member 18, the mixture from which the liquid such as tissue water has been removed and dehydrated further rotates with the rotation of the screw 14, It is conveyed toward the upper end 14f of the shaft portion 14a, and moves to the inner diameter side of the guide member 28 provided at the upper end 18e of the upper exterior member 18.
[0049]
Here, the mixture located on the inner diameter side of the guide member 28 is a mixture that has already been dehydrated by removing even a liquid such as tissue water, and as a result, only the solid in the mixture is obtained. .
[0050]
The solid in the mixture positioned on the inner diameter side of the guide member 28 moves with the rotation of the screw 14 such that the upper protrusion 14h of the screw 14 comes into sliding contact with the inner diameter surface 28b of the guide member 28. The upper protrusion 14h moves from the opening 28a of the guide member 28 to the upper discharge port 12d of the main body case 12, and is discharged from the upper discharge duct 24 to the outside of the separation device 10.
[0051]
In the separation device 10 as described above, the mixture in which the liquid and the solid are mixed is transported from the lower end 14 e of the shaft portion 14 a toward the upper end 14 f with the rotation of the screw 14, and is disposed below the main body case 12. The space E1 is sequentially moved to the space E1 located therein, the space E2 located at the middle position of the main body case 12, and the space E3 located at the upper position of the main body case 12, and dewatered while being pressurized and compressed. Then, the liquid removed from the mixture is discharged from the lower discharge duct 22 to the outside of the separation device 10, and the solid in the mixture is discharged from the upper discharge duct 24 to the outside of the separation device 10, and the mixture is converted into a liquid. And solids.
[0052]
When the mixture is separated into a liquid and a solid in the separation device 10 in this manner, in the space E1 between the shaft portion 14a of the screw 14 and the lower exterior member 16, the solid in the mixture is mixed with the side surface of the lower exterior member 16. There is a possibility that it will accumulate in many holes 16b formed in 16a.
[0053]
However, since the outer peripheral member 14d is arranged at the outer peripheral end 14c of the projection 14b of the screw 14, the external member 14d is brought into contact with the inner diameter side 16d of the lower exterior member 16 with the rotation of the screw 14. The solid in the mixture does not deposit on the hole 16b of the side surface 16a of the lower exterior member 16 by moving. For this reason, in the separation device 10 provided with the screw 14, the operation of separating the mixture into the liquid and the solid can be continuously performed.
[0054]
Further, even if the operation of separating the mixture into a liquid and a solid is continued, the solid in the mixture does not deposit on the holes 16b on the side surfaces 16a of the lower exterior member 16, so that the mixture is Most of the liquid in the mixture is efficiently discharged, the amount of the liquid in the mixture conveyed above the space E1 can be reduced, and the mixture containing a large amount of liquid is conveyed to the space E2 or the space E3. Can be prevented.
[0055]
Here, the cross section of the screw 14 in a direction orthogonal to the axial direction of the shaft portion 14a is formed in a substantially elliptical shape (see FIGS. 4B and 4C), and the tip 14g of the shaft portion 14a is Since the mixture is separated into a liquid and a solid in the separation device 10, the screw 14 that rotates when the mixture is separated into the liquid and the solid in the separation portion swings by irregular elliptical motion (FIG. 6). (C)).
[0056]
When the rotating screw 14 swings due to the irregular elliptical motion, the rotating screw 14 is swung in a direction orthogonal to the axial direction of the shaft portion 14a, so that the mixture located in the space E1, the space E2, or the space E3 is removed. A predetermined load can be applied to the lower exterior member 16 of a substantially cylindrical body and the inner diameter sides 16d and 18a of the upper exterior member 18 located on the outer peripheral side of the screw 14.
[0057]
As a result, the mixture can be efficiently transported by the screw 14 from the lower end 14e to the upper end 14f of the shaft portion 14a, and the mixture is smoothly transported upward in the order of the space E1, the space E2, and the space E3. .
[0058]
In addition, since the direction in which the protrusion 14b of the screw 14 is formed in a spiral shape matches the winding direction of the coil spring as the upper exterior member 18, the mixture can be more smoothly transported upward. Further, since the entire screw 14 is processed to prevent the mixture from adhering, even during the operation of separating the mixture into a liquid and a solid, the outer peripheral surface 14aa of the shaft portion 14a of the screw 14 is formed. The mixture does not adhere to the surface 14bb of the projection 14b and the surface 14dd of the outer peripheral member 14d, and does not hinder the conveyance of the mixture.
[0059]
In this way, in the separation device 10 including the screw 14 that can very efficiently convey the mixture from the lower end 14e to the upper end 14f of the shaft portion 14a, the operation of separating the mixture into a liquid and a solid is continuously performed. The operation time can be shortened.
[0060]
Further, the mixture located in the space E1, the space E2, or the space E3 causes a predetermined load on the inner diameter sides 16d and 18a of the lower exterior member 16 and the upper exterior member 18 due to the swinging of the rotating screw 14 due to the irregular elliptical motion. , The mixture in the space E1, the space E2, or the space E3 is more reliably compressed, and the liquid in the mixture can be efficiently removed. At this time, the mixture adhering to the inner diameter side 16 d of the lower exterior member 16 and the inner diameter side 18 a of the upper exterior member 18, in particular, the solid in the mixture is converted into the inner diameter side 16 d of the lower exterior member 16 and the inner diameter of the upper exterior member 18. It can be peeled off from the side 18a. Therefore, in the separation device 10 provided with the screw 14, the operation of separating the mixture into a liquid and a solid can be performed reliably and continuously in a good state.
[0061]
The thickness of the screw 14 is gradually changed so that the thickness at the lower end 14e side of the shaft portion 14a is the thinnest and the thickness at the upper end 14f side is the thickest. The interval W2 in the direction along the axis of the shaft 14a of the projection 14b near the upper end 14f is smaller than the interval W1 in the direction along the axis of the shaft 14a of the projection 14b near the side 14e. Has been done. As a result, the sizes of the space E1, the space E2, and the space E3 are space E1> space E2> space E3, and the space E3 is the smallest.
[0062]
Here, in the mixture transported upward in the order of the space E1, the space E2, and the space E3, a liquid such as mixed water is removed in the space E1, and a liquid such as adhered water is removed in the space E2. Therefore, when located in the space E3, many liquids in the mixture have already been removed.
[0063]
However, since the space E3 is formed to be the smallest as described above, a mixture from which a large amount of liquid has already been removed, or a mixture containing only a small amount of liquid from the beginning, or Even in the case of a mixture having a small total amount, it can be appropriately compressed and dehydrated in the space E3, and reliable dehydration for removing even liquid such as tissue water can be realized.
[0064]
Here, in the separation device 10, on the outer peripheral side of the screw 14 that can swing due to irregular elliptical motion, an upper exterior member 18 constituted by a tight coil spring is disposed (see FIG. 6C). ). Then, the rotating screw 14 is swung in a direction orthogonal to the axial direction of the shaft portion 14a, and the mixture located in the space E1, the space E2, or the space E3 applies a predetermined load to the inner diameter side 18a of the upper exterior member 18. When the upper exterior member 18 is in contact with the upper exterior member 18, the upper exterior member 18 is formed of a tightened coil spring, so that the upper exterior member 18 can escape in a direction orthogonal to the axial direction. That is, even if a predetermined load is applied to the inner diameter side 18a of the upper exterior member 18, the load does not escape in the axial direction of the upper exterior member 18.
[0065]
For this reason, in the separation device 10, even if a predetermined load is applied to the inner diameter side 18a of the upper exterior member 18 during the operation, the metal wires that are in close contact with each other so as to form a tightening coil spring of the upper exterior member 18 are in contact with each other. The tangent portion 18c does not greatly expand. As a result, only the liquid removed from the mixture in the space E2 or the space E3 is discharged to the outside from the tangential point 18c, and the solid in the mixture is not discharged to the outside from the tangential point 18c.
[0066]
Therefore, in the separation device 10 according to the present invention, the mixture can be reliably separated into the liquid and the solid, and the solid removed from the mixture does not mix with the liquid. No problems arise.
[0067]
In contrast to such a separation apparatus 10 according to the present invention, in a conventional apparatus, for example, in an apparatus configured to discharge a liquid from a gap of a cylindrical body fixedly arranged on the outer peripheral side of a screw, Since the body is fixedly disposed, when a load is applied from the inner diameter side of the cylinder, the load cannot escape in a direction orthogonal to the axial direction of the cylinder, and the load is Will escape in the axial direction. As a result, in the conventional apparatus, when a load is applied, the gap between the cylindrical bodies expands, and solids are mixed in the liquid removed from the mixture, and the liquid and the solids are reliably separated. Could not be done, and various problems such as post-processing were to be made in the future.
[0068]
Next, with reference to FIG. 7, a garbage disposal system having a separation device provided with an example of an embodiment of the screw of the separation device according to the present invention will be described.
[0069]
The separating device 10 of the garbage processing system 100 shown in FIG. 7 is the same as the separating device 10 described with reference to FIGS. 1 to 6, that is, the separating device 10 having the screw 14, and the screw 14 and the separating device. The description of 10 will be omitted with reference to the above description.
[0070]
The garbage processing system 100 includes a pretreatment device 102 including a crusher for crushing garbage, a separation device 10 provided at a stage subsequent to the pretreatment device 102, and a separation device 10 provided at a stage subsequent to the separation device 10. And a post-processing device 104 to be performed.
[0071]
Here, the pretreatment device 102 can be configured by, for example, a pulverizing device connected to a drain of a sink of a commercial kitchen facility or a home kitchen. In such a crushing device, the cutter is driven by a motor or the like and rotates at a high speed to crush the garbage to a predetermined size. Such a pulverization process in the pulverizer is performed in a flowing water state for cooling in the process. As a result, the crushed garbage, that is, the mixture of the liquid and the solid, is transported to the separation device 10 disposed at the subsequent stage of the pretreatment device 102.
[0072]
On the other hand, the post-processing device 104 can be constituted by, for example, a drying device provided with a stirring means.
[0073]
In the garbage processing system 100 including the pretreatment device 102, the separation device 10, and the post-treatment device 104, the flow path connecting the pretreatment device 102 and the separation device 10 and the separation device 10 and the post-treatment device 104 , Or a flow path for drainage or exhaust, etc., are provided as appropriate.
[0074]
In the above configuration, in order to treat garbage using the garbage disposal system 100, first, garbage is supplied to the pretreatment device 102 by flowing water. Then, the input garbage is pulverized by the pulverizing device as the pretreatment device 102. The garbage crushed to a predetermined size in this way is conveyed to the separation device 10 through a predetermined flow path.
[0075]
The conveyed garbage, that is, the mixture of the liquid and the solid, is introduced from the introduction port 12b of the main body case 12 to the inside 12a of the main body case 12 through the introduction duct 20 of the separation device 10. . The garbage, which is the mixture thus introduced, is conveyed from the lower end 14e of the shaft 14a to the upper end 14f with the rotation of the screw 14 in the same manner as described with reference to FIGS. Then, they are sequentially positioned in the space E1, the space E2, and the space E3 (see FIG. 2), and are dehydrated while being pressurized and compressed.
[0076]
As a result, the liquid removed from the crushed garbage is discharged from the lower discharge duct 22 to the outside of the separation device 10, and the solid in the crushed garbage is discharged from the upper discharge duct 24 to the separation device 10. The garbage is discharged to the outside and separated into liquid and solid.
[0077]
The remaining solids of the dewatered garbage are conveyed to the post-processing device 104 through a predetermined flow path connected to the upper discharge duct 24 of the separation device 10. Then, it is dried by a drying device as the post-processing device 104 while being stirred by the stirring means.
[0078]
As described above, the garbage disposal system 100 has the separation device 10, so that the garbage that has been pretreated by being crushed by the crushing device as the pretreatment device 102 is separated into a liquid and a solid. During the operation, the solid in the garbage does not accumulate in the hole 16b of the side surface 16a of the lower exterior member 16, and the operation of separating the garbage into the liquid and the solid can be performed continuously.
[0079]
Further, also in the garbage disposal system 100, various effects are exerted by the separation device 10 having the screw 14 shown in FIGS. 1 to 6, and the amount of liquid in the garbage conveyed above the space E1 can be reduced. Thus, it is possible to prevent garbage containing a large amount of liquid from being transported to the space E2 or the space E3. Further, the garbage can be efficiently transported by the screw 14 from the lower end 14e to the upper end 14f of the shaft portion 14a, and the garbage is smoothly transported upward in the order of the space E1, the space E2, and the space E3. You. In addition, since the entire screw 14 is processed to prevent the mixture from adhering, garbage may be removed from the outer peripheral surface 14aa of the shaft 14a of the screw 14, the surface 14bb of the protrusion 14b, and the surface of the outer member 14d. It does not adhere to 14dd and does not hinder the transfer of garbage. In addition, the time required to process garbage can be reduced. Furthermore, even if the garbage contains only a small amount of liquid from the beginning, or the garbage has a small amount in its entirety, the garbage can be appropriately compressed and dehydrated in the space E3. Reliable dehydration to be removed can be realized. In addition, the garbage can be reliably separated into a liquid and a solid, and the solid removed from the liquid removed from the garbage does not mix with the garbage. Nor.
[0080]
That is, since the liquid separated from the garbage by the separation device 10 of the garbage disposal system 100 does not contain any solids, the liquid discharged from the lower discharge duct 22 of the separation device 10 It can also flow from a predetermined flow path connected to the discharge duct 22 to the sewer.
[0081]
Since the remaining solids of the garbage dewatered by the separation device 10 are surely dewatered by the separation device 10, they do not contain extra liquid and can be dried by the post-processing device 104 in a short time. And the efficiency of garbage disposal can be improved.
[0082]
Next, with reference to FIG. 8, an oil treatment system having a separation device provided with an example of an embodiment of the screw of the separation device according to the present invention will be described.
[0083]
The separation device 10 of the oil treatment system 200 shown in FIG. 8 is the same as the separation device 10 described with reference to FIGS. 1 to 6, that is, the separation device 10 having the screw 14. Will be omitted with reference to the above description.
[0084]
The oil treatment system 200 includes a pretreatment member 202 into which a mixture is initially charged, a separation device 10 disposed downstream of the pretreatment device 102, and a posttreatment device disposed downstream of the separation device 10. 204.
[0085]
Here, the pretreatment member 202 can be configured by, for example, a filter formed of a wire mesh for receiving dust and the like, which is connected to a drain port of a sink of a commercial kitchen facility or a home kitchen. For example, leftovers of meals and the like are directly input to the pretreatment member 202. As a result, the mixture charged into the pretreatment member 202 is a mixture of a liquid and a solid, and in particular, the liquid contains a large amount of oil.
[0086]
On the other hand, the post-processing device 204 can be configured by, for example, an oil component removing device that removes only the oil component in the liquid.
[0087]
In the oil processing system 200 including the pretreatment member 202, the separation device 10, and the post-treatment device 204, the oil passage system connects the pretreatment member 202 and the separation device 10, the separation device 10 and the post-treatment device 204. , Or a flow path for drainage or exhaust, etc., are provided as appropriate.
[0088]
In the above configuration, in order to treat a mixture containing a large amount of oil using the oil treatment system 200 described above, first, the mixture is filtered by a pretreatment member 202 to remove solids having a predetermined size or more in the mixture. The mixture from which solids of a predetermined size or more have been removed is conveyed to the separation device 10 through a predetermined flow path.
[0089]
Then, the conveyed mixture, that is, the mixture of the liquid and the solid containing a large amount of oil, is introduced from the introduction port 12b of the main body case 12 to the inside 12a of the main body case 12 through the introduction duct 20 of the separation device 10. be introduced. The mixture introduced in this manner is conveyed from the lower end 14e of the shaft portion 14a toward the upper end 14f with the rotation of the screw 14 in the same manner as described with reference to FIGS. It is sequentially located in E1, space E2, and space E3 (see FIG. 2), and is dehydrated while being pressurized and compressed.
[0090]
As a result, the oil-rich liquid removed from the mixture is discharged from the lower discharge duct 22 to the outside of the separation device 10, and the solid in the mixture is discharged from the upper discharge duct 24 to the outside of the separation device 10. As a result, the mixture is separated into a liquid and a solid containing a large amount of oil.
[0091]
The oil-rich liquid that has been dehydrated and discharged from the mixture in this way is transported to the post-processing device 204 through a predetermined flow path connected to the lower discharge duct 22 of the separation device 10. Then, only the oil contained in the dehydrated liquid is removed from the mixture by the oil removing device as the post-processing device 204, and the remaining liquid flows from a predetermined flow path to the sewer.
[0092]
As described above, in the oil treatment system 200, since the separation device 10 is provided, the mixture from which the solid having a predetermined size or more has been removed by the pretreatment member 202 is converted into the oil-rich liquid and the solid. During the separating operation, the oil contained in the solid or liquid in the mixture is not accumulated in the hole 16b of the side surface 16a of the lower exterior member 16, and the mixture is separated into the liquid and the solid containing much oil. Can be continuously performed.
[0093]
Further, also in the oil treatment system 200, various effects are exerted by the separation device 10 having the screw 14 shown in FIGS. 1 to 6, and the amount of the liquid in the mixture conveyed above the space E1 can be reduced. The mixture containing a large amount of liquid can be prevented from being conveyed to the space E2 or the space E3. Further, the mixture can be efficiently transported by the screw 14 from the lower end 14e to the upper end 14f of the shaft portion 14a, and the mixture can be smoothly transported upward in the order of the space E1, the space E2, and the space E3. In addition, since the entire screw 14 is processed to prevent the mixture from adhering, the oil contained in the mixture and the liquid in a large amount may be removed from the outer peripheral surface 14aa of the shaft 14a of the screw 14 and the protrusion 14b. It does not adhere to the surface 14bb and the surface 14dd of the outer peripheral member 14d, and does not hinder the transport of the mixture. Also, the time required to process the mixture can be reduced. Furthermore, even a mixture containing only a small amount of liquid from the beginning or a mixture having a small total amount can be appropriately compressed and dehydrated in the space E3 to remove even liquid such as tissue water. Reliable dehydration can be realized. Then, the mixture can be surely separated into a liquid and a solid, the solid does not mix in the liquid removed from the mixture, and various problems do not occur in post-treatment and the like. .
[0094]
Further, the above-described embodiment may be modified as shown in the following (1) to (7).
[0095]
(1) In the above-described embodiment, the outer peripheral member 14d disposed on the outer peripheral end 14c of the protrusion 14b of the screw 14 is formed as a substantially rod-shaped body, but is not limited to this. Needless to say, for example, the outer peripheral member may have a curved surface (see FIG. 9A), or the entire outer peripheral member may be a substantially plate-like body (FIG. 9). (B)).
[0096]
That is, the outer peripheral member 14d moves in a state in which the outer peripheral member 14d is in contact with the inner diameter side 16d of the lower exterior member 16 with the rotation of the screw 14, thereby peeling off the adhered matter attached to the inner diameter side 16d of the lower exterior member 16. Can be changed as possible.
[0097]
Therefore, the position and angle at which the outer peripheral member 14d is disposed at the outer peripheral end 14c of the protrusion 14b may be changed according to the rotation direction of the screw 14, and the outer peripheral member 14d is disposed with a slight inclination. This facilitates the detachment of the attached matter.
[0098]
Further, the outer peripheral member 14d may be formed by a brush, and the extending direction of the outer peripheral member 14d is not limited to the axial direction of the shaft portion 14a, but may be in a range where the outer peripheral member 14d can contact the side surface 16a of the lower outer member 16. May be changed.
[0099]
Further, since the outer peripheral member 14d is disposed at the outer peripheral end 14c of the protrusion 14b, the replacement is easy, but it is needless to say that the outer member 14d is not limited to this. It may be formed integrally. Further, depending on the type of the mixture, the outer peripheral member 14d may be configured to be able to contact the upper exterior member 18.
[0100]
(2) In the above-described embodiment, the lower exterior member 16 is disposed so as to cover the outer peripheral end 14c of the protrusion 14b near the lower end 14e of the shaft 14a of the screw 14. Of course, the present invention is not limited to this. For example, the lower exterior member 16 may be extended upward to shorten the upper exterior member 18, or the lower exterior member 16 or the upper exterior Only the member 18 may be provided.
[0101]
Also, by changing the shape of the large number of holes 16b formed on the side surface 16a to various shapes, such as by forming the resin of the lower exterior member 16, the holes 16b of the side surface 16a of the lower exterior member 16 are filled with the mixture in the mixture. Solids can be more reliably prevented from being deposited.
[0102]
(3) In the above-described embodiment, the upper exterior member 18 is configured by a tight coil spring in which a metal wire having a circular cross section is wound in a coil shape with a fixed inner diameter, but is not limited thereto. Needless to say, for example, a linear material having a triangular cross section (see FIG. 10A), a linear material having a rectangular cross section (see FIG. 10B), and a linear material having a semicircular cross section Material (see FIG. 10 (c)) or linear material processed into various shapes (see FIGS. 10 (d), (e) and (f)) is coiled at a fixed inner diameter to form an upper sheath by a tight coil spring. The member 18 may be configured. At this time, the winding direction of the coil spring may be opposite to the direction in which the protrusion 14b of the screw 14 is formed in a spiral shape.
[0103]
When the linear material processed into the above-mentioned various shapes (see FIGS. 10 (d), (e), and (f)) is used, metal wires which are in close contact with each other so as to form a tight coil spring are provided at a tangential portion 18c where the metal wires are in contact with each other. A hole can be provided, and the shape of the tangential portion 18c can be changed.
[0104]
Further, as shown in FIG. 11, an adjusting means 30 for adjusting the upper exterior member 18 may be provided according to the content of the mixture to be processed. By limiting the range of the upper exterior member 18 along the axial direction by the adjusting means 30, it is also possible to adjust the amount of liquid discharged during work from the tangent portion 18c of the upper exterior member 18.
[0105]
(4) In the above-described embodiment, the anti-adhesion processing such as embossing is performed on the entire screw 14. However, it is needless to say that the present invention is not limited to this. According to the content of the mixture to be treated, it may be applied to each member constituting the separation apparatus 10.
[0106]
(5) In the above-described embodiment, the dimensions of the separation device 10 and the materials of each member shown in FIGS. 1, 7 and 8 depend on the location where the separation device 10 is provided and the mixture to be treated. You may make it change suitably according to the content. Further, in accordance with such a change, various changes such as changing the shape of the driving means of the screw 14 and the guide member 28, or adding a means for deodorizing may be performed.
[0107]
For example, the separation device 10 may be used at an angle at a predetermined angle. When a large amount of liquid is mixed in the mixture, a relatively long time is required for dehydration. 1, the total length may be longer than that of the separation device 10 shown in FIGS. 7 and 8 (see FIG. 12).
[0108]
(6) In the above embodiment, the garbage processing system 100 (see FIG. 7) and the oil processing system 200 (see FIG. 8) having the separation device 10 have been described. However, the present invention is not limited to this. Of course, the present invention is applied to various solid-liquid separation processing systems such as a system for removing solid matter contained in waste oil, a system for treating sludge, and a system for treating manure of livestock. A separation device 10 having a screw 14 according to the invention may be used.
[0109]
(7) The above-described embodiment and the above-described modifications (1) to (7) may be appropriately combined.
[0110]
【The invention's effect】
Since the present invention is configured as described above, it has an excellent effect that the operation of separating the mixture of the liquid and the solid into the liquid and the solid can be continuously performed.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram illustrating an example of a separation device including an example of an embodiment of a screw according to the present invention.
FIG. 2 is a cross-sectional view of a main part at a position passing through a central axis of a screw of the separation device shown in FIG.
FIG. 3 is a cross-sectional view taken along a line AA shown in FIG.
4A is a schematic explanatory view of a screw according to the present invention, FIG. 4B is a sectional view taken along line BB of FIG. 4A, and FIG. 4C is a sectional view taken along line CC of FIG. FIG.
FIG. 5 is a schematic structural perspective view of the screw according to the present invention shown in FIG. 4 (a).
6A is an enlarged partial cross-sectional view of the upper exterior member, FIG. 6B is an explanatory view schematically showing the upper exterior member before operation, and FIG. 6B is an upper exterior member during operation. It is explanatory drawing which showed the member typically.
FIG. 7 is a schematic configuration explanatory view showing an example of a garbage disposal system including the separation device shown in FIG.
FIG. 8 is a schematic configuration explanatory view showing an example of an oil treatment system including the separation device shown in FIG.
9 (a) and 9 (b) are schematic perspective views showing another example of the screw shown in FIG. 5;
FIGS. 10 (a), (b), (c), (d), (e), and (f) are explanatory views showing another example of the upper exterior member of the separation device shown in FIG.
FIG. 11 is an explanatory view showing another example of the upper exterior member of the separation device shown in FIG. 1;
FIG. 12 is a schematic structural explanatory view showing another example of the separation device shown in FIG. 1;
[Explanation of symbols]
10 Separation device
12 Body case
12a inside
12b Inlet
12c Lower outlet
12d upper outlet
14 Screw
14a Shaft
14aa outer peripheral surface
14b protrusion
14bb surface
14c Outer edge
14d outer peripheral member
14dd surface
14e bottom
14f upper end
14g tip
14h upward projection
16 Lower exterior member
16a side view
16b hole
16c notch
16d inner diameter side
18 Upper exterior member
18a Inside diameter side
18b side view
18c tangent point
20 Introduction duct
22 Lower exhaust duct
24 Duct for upper discharge
26 Drive
28 Guide member
28a opening
28b bore surface
30 Adjusting means
100 Garbage disposal system
102 Pretreatment device
104 Post-processing equipment
200 oil treatment system
202 Pretreatment materials
204 Post-processing device

Claims (8)

A screw of a separation device that separates a mixture of a liquid and a solid into a liquid and a solid, on the inner diameter side of an exterior member having a number of holes on a side surface of a substantially cylindrical body provided in the separation device. Arranged, in the screw to sandwich the mixture between the exterior member, and to discharge the liquid in the mixture from the hole of the exterior member,
A shaft extending in a predetermined direction;
A protrusion formed in a spiral shape on the outer peripheral surface of the shaft portion,
An outer peripheral member that is disposed at an outer peripheral end of the protrusion and has an outer peripheral member that can be in contact with an inner diameter surface of an exterior member having a number of holes on a side surface of a substantially cylindrical body positioned on the outer peripheral side of the protrusion. Features screw. The screw according to claim 1,
The outer peripheral member is a substantially rod-shaped body as a whole, and the length along the axial direction substantially matches the length along the axial direction of the exterior member, and the axial direction matches the axial direction of the shaft portion. The screw is provided at the outer peripheral end of the projection as described above. The screw according to claim 1,
A screw having a cross section in a direction perpendicular to the axial direction of the shaft portion, which has a substantially elliptical shape. In the screw according to any one of claims 1, 2, or 3,
The screw is characterized in that the entire screw is processed to prevent the mixture from adhering. The screw according to claim 1, claim 2, claim 3, or claim 4,
The screw, wherein the thickness of the shaft portion is gradually changed so that the thickness at the lower end is the thinnest and the thickness at the upper end is the thickest. In the screw according to any one of claims 1, 2, 3, 4, and 5,
The interval between the protrusions in the direction along the axial direction of the shaft portion is smaller than the interval near the lower end side of the shaft portion in the vicinity of the upper end of the shaft portion. . A separation device having the screw according to any one of claims 1, 2, 3, 4, 5, and 6,
Separation characterized by having a second exterior member comprising a tightening coil spring which is disposed above the exterior member and is located on the inner diameter side, wherein the screw is located on the inner diameter side, and a metal wire is wound in a coil shape with a constant inner diameter. apparatus. A separation device according to claim 7,
A pretreatment device disposed at a stage preceding the separation device and performing a pretreatment on the mixture;
A processing system, comprising: a pretreatment device that is disposed at a stage subsequent to the separation device and that performs posttreatment on the mixture.

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