JP4272129B2 - Solid-liquid separator - Google Patents

Description

  The present invention relates to a solid-liquid separation device that separates solid matter such as raw garbage mixed in a liquid from the liquid.

As a conventional solid-liquid separation device, for example, a solid-liquid separation device used in a garbage dehydration processing device used in a kitchen is known.
This solid-liquid separator supplies water-containing garbage as a mixture of solids and liquid, which is produced by mixing and pulverizing the garbage discharged from the kitchen into the lower part of the cylindrical strainer. The hydrated garbage is transported above the strainer by the rotation of the blades of the screw provided in the strainer. Water is discharged from above the strainer in a dehydrated state because water flows out of the strainer through countless holes (water channels) provided in the strainer while the garbage is being transported above the strainer. This is a configuration.

  However, in the configuration in which a solid material such as crushed garbage in a mixture is separated from a liquid such as water using a strainer in which the small holes described above are open innumerably on the wall surface, the solid material attached to the inner peripheral surface of the strainer Can always be scraped off by the blade portion of the screw, but small solid matter adhering to the inner wall surface of the small hole that becomes the water passage for the separated liquid cannot be scraped directly by the blade portion of the screw. Accordingly, the pores of the small holes are clogged and the liquid drainage becomes insufficient, the ability of solid-liquid separation tends to be reduced, and the strainer frequently needs to be cleaned or replaced. This clogging can be mitigated by reducing the length of the water passage by reducing the thickness of the strainer, or by increasing the inner diameter of the small hole, but in this case the solid matter contained in the separated liquid is reduced. A problem arises that the ratio increases and causes wastewater pollution.

  Accordingly, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a solid-liquid separation device that can efficiently separate solids and liquids while preventing clogging of the strainer.

In order to solve the above problems, the solid-liquid separator according to the present invention is formed into a cylindrical body by laminating a plurality of flat circular ring bodies with a predetermined gap between end faces. By rotating the strainer around a rotation shaft supporting the strainer, and passing only the liquid between the end faces of the circular ring body from the mixture of the solid and the liquid introduced into the outer region of the strainer, In the solid-liquid separator that separates solids from the mixture, the strainer is accommodated in a case with the rotating shaft horizontal and the opening portions on both ends of the strainer being closed. An inlet for the mixture is formed in the outer area of the strainer, and an outlet for discharging the liquid that has passed between the end faces of the circular ring body is formed in the inner area of the strainer. An outlet for extracting the solid separated from the mixture to the outside of the case is formed in an outer region of the strainer on the downstream side in the rotational direction of the strainer, and the circular ring is adjacent to the outlet of the case. comprising a body of each of the end faces between a flat plate-like projections piece tip you enter the the lid scraper abutting the outer surface is formed on a slope extending downward along the tangential direction of the strainer is mounted, said circular ring One or more protrusions for transporting the solid matter contained in the mixture are formed on the outer peripheral surface of at least one circular ring body in the body, and the case has a circle along the moving direction of the protrusions. cylindrical housing portion inner peripheral surface of the arcuate is formed is formed, said scraper, said formed to the same thickness as the thickness of the circular ring members, it has been an outer surface laminated on the flat protruding piece of the scraper For the support piece that is provided at the position of the circular ring body provided with a support piece that becomes a surface and that has the protrusion, the inner face of the support piece, the outer peripheral face of the circular ring body, and the support piece are sandwiched The flat plate-like convex wall surface arranged in such a manner is attached so that an arc-shaped flow path is formed, and the lid body is opposed to the scraper on the upstream side in the rotational direction of the strainer at the outlet. One side is supported rotatably, and the other side downstream in the rotational direction of the strainer is provided so as to be swingable with the one side as a fulcrum and constantly biased with respect to the scraper by biasing means. Features.

According to this, in the mixture introduced into the external region of the strainer, the liquid passes through the gap formed between the end faces of the circular ring bodies constituting the strainer, moves to the internal region of the strainer, and is discharged from the discharge port. Is done. On the other hand, the solid matter cannot pass through the gap between the circular ring bodies and stops in the outer region of the strainer. Therefore, solid-liquid separation is performed. And unlike the case of a small hole where the length of the water passage is only the length of the plate thickness as in the conventional strainer structure, the length of the water passage when using a circular ring body is at least a circular ring. It is the difference between the outer diameter and the inner diameter of the body, and can be made sufficiently longer than the length of the conventional small hole. Therefore, the amount of solid matter that enters the gap between the circular ring bodies and adheres to the end face of the circular ring body increases, and the amount of solid matter that enters the internal region of the strainer decreases, so that the solid-liquid separation performance is improved.
Furthermore, since the solid matter adhering to the end face of the circular ring body is always scraped off by the flat plate-like protruding piece of the scraper that moves relatively along the outer peripheral surface of the strainer, clogging does not occur.

Further, the introduction port is provided at a bottom portion of the case, the discharge port is provided at a position higher than the introduction port, and the outlet is provided at a position higher than the discharge port. In the case, the liquid is always accumulated up to the level of the discharge port. Therefore, the solid matter contained in the liquid that has entered the case from the inlet is scattered in the accumulated liquid and spread over the entire outer peripheral surface of the strainer. As a result, it is possible to avoid the phenomenon that a part of the strainer always filters a portion where the concentration of solid matter is high, and efficient dehydration can be performed. In addition, since the outlet is provided at a position higher than the outlet, the solid matter moves to the outlet in a state where it exits from the liquid surface to the outside, and solid-liquid separation is also performed in the meantime.

In addition, the strainer is formed by laminating a circular ring body by aligning the circumferential positions of the protrusions so that ribs extending in the axial direction of the strainer are formed by the protrusions at a plurality of locations in the circumferential direction. and it is provided.

Further, the strainer is provided in a form in which the protrusions are spirally arranged on the outer peripheral surface of the strainer by sequentially laminating the circumferential positions of the protrusions and stacking circular ring bodies. It is characterized by that.

The circular ring body is formed in a flat plate-shaped first circular ring body and a flat plate shape in which a plurality of protrusions are formed at predetermined angular intervals on the outer peripheral surface of the first circular ring body. The second circular ring body is provided .

Further, the scraper is pre-SL and circular ring members first convex piece scraping solids deposited on the outer circumferential surface plate of the distal end side penetrates into said gaps between the circular ring members, of the circular ring members It has the 2nd convex piece which scrapes off the solid substance adhering to an end surface, and the support piece which clamps this 2nd convex piece, It is characterized by the above-mentioned.
In addition, the scraper is formed so as to constitute a part of an arcuate inner peripheral surface of the cylindrical housing portion along the moving direction of the protrusion .

Further, a configuration is provided in which at least a part of the throttle region in which the interval between the outer peripheral surface of the strainer and the inner surface of the case gradually narrows along the rotation direction of the front strainer is provided at least to the inlet and the outlet. Then, the liquid contained in the solid matter that adheres to the outer peripheral surface of the rotating strainer and moves can be further squeezed out in the squeezing region, and the dehydrating effect can be increased.

When the solid-liquid separation device according to the present invention is used, a strainer is formed by stacking circular ring bodies at intervals, and a solid material adhering to the end face of the circular ring body constituting the strainer is always scraped by a scraper. Therefore, solid matter does not accumulate between the end faces of the circular ring body that becomes the liquid passage, and clogging occurs, and the distance between the circular ring bodies can be narrowed, so that a good solid-liquid separation capability can be obtained. I can do it. In addition, as compared with the conventional structure in which small holes are provided in the plate material, there is no concern about clogging, so that the difference between the inner diameter and the outer diameter of the circular ring body that is the liquid passage length can be increased. Thereby, since the possibility that the solid matter that has entered between the gaps of the circular ring body adheres to the end face of the circular ring body increases, the filter effect is further improved.
In addition, since the amount of solid matter that adheres to and stays on the strainer is reduced in this way, there is an effect that the solid matter is less rotted and the generation of bad odors is eliminated.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a solid-liquid separation device according to the invention will be described in detail with reference to the accompanying drawings.
First, the basic concept of the solid-liquid separator 10 will be described with reference to FIGS. 1 and 2. The strainer 12 is formed into a cylindrical body by laminating a plurality of flat circular ring bodies 14 with a predetermined gap. The gap between the end faces of the adjacent circular ring bodies 14 is determined based on the size of the solid material 16 contained in the mixture separated from the liquid 18 by the strainer 12. In other words, if it is desired to reduce the ratio of solids contained in the separated liquid 18 to reduce the contamination of the liquid 18, the solids passing between the circular ring bodies 14 are reduced by narrowing the interval between the circular ring bodies 14. Try to reduce the amount of things. In the opposite case, the interval between the circular ring bodies 14 may be widened to some extent. In this embodiment, the strainer 12 is formed in a cylindrical body having the same diameter by laminating circular ring bodies 14 having the same outer diameter. For example, the truncated cone has a smaller outer diameter in the order of lamination. It is also possible to form it.

Further, since the gap between the circular ring bodies 14 is a water passage through which liquid flows, the difference between the outer diameter and the inner diameter of the circular ring body 14, that is, the width A of the end surface of the circular ring body 14 is the length of the water passage. It becomes. A part of the solid contained in the liquid passing through the gap between the circular ring bodies 14 (gap formed in the ring shape) adheres to the end face of the circular ring body 14 while passing through the gap. Therefore, it is considered that the amount of the solid matter attached to the end face of the circular ring body 14 tends to increase as the water passage becomes longer, that is, as the width A of the end face of the circular ring body 14 becomes longer.
Therefore, since the width A of the end face of the circular ring body 14 affects the separation ability of the liquid and the solid material 16 of the strainer 12, it is desirable that the width A be wider if the separation ability is to be increased. On the other hand, as will be described later, the solid matter 16 adhering to the end face of the circular ring body 14 is scraped off by the flat (fin-like) convex pieces 22 of the scraper 20, but the width A of the end face of the circular ring body 14 is increased. If it is too large, the contact resistance between the convex piece 22 and the circular ring body 14 increases, and the strainer 12 is rotated, so that a large driving force is required. Therefore, in practice, the width A of the end face of the circular ring body 14 is determined in consideration of the required driving force and solid-liquid separation capability.

The case 24 has a cylindrical housing portion (hereinafter also simply referred to as a housing portion) 26 that houses the strainer 12, and the housing portion 26 is separated into an internal region B and an external region C of the strainer 12 by the strainer 12. . In the accommodating part 26, the strainer 12 is supported so that rotation is possible and the both-ends opening part of the strainer 12 formed in a cylindrical shape is obstruct | occluded. The strainer 12 is arranged so that the rotating shaft 48 is horizontal.
In the accommodating portion 26, an introduction port 28 for introducing a mixture of liquid and solid matter is provided in the upper portion of the outer region C of the strainer 12 in the accommodating portion 26.
In addition, a discharge port 30 for discharging the liquid that has passed through the strainer 12 and entered the internal region B to the outside of the storage unit 26 is provided in the internal region B below the outlet described later. It has been. As an example, the discharge port 30 is provided in the vicinity of being in contact with the inner peripheral surface of the lower portion of the strainer 12.

  The scraper 20 has a plurality of plate-like (fin-like) convex pieces 22 whose tips enter between the end faces of the circular ring body 14 constituting the strainer 12 and reach the inner peripheral surface of the circular ring body 14. For example, the plurality of convex pieces 22 project from the end surface of the support member 32 extending along the axial direction of the strainer 12 on the strainer 12 side. Further, the upstream end surface shape of the convex piece 22 and the support member 32 in the rotational direction D of the strainer 12 is such that the scraped solids gradually move in the outer circumferential direction of the circular ring body 14 as the strainer 12 rotates. It is formed on the slope with respect to the radial direction. Further, the end edge on the strainer 12 side of the upstream end surface of the support material 32 in the rotational direction D of the strainer 12 is in contact with the outer peripheral surface of the circular ring body 14.

With this configuration, the scraper 20 scrapes off the solid matter 16 adhering to the end face of the circular ring body 14 with the convex piece 22, and the outer periphery of the circular ring body 14 on the upstream end face in the rotational direction D of the strainer 12 of the support material 32. The solid matter 16 adhering to the surface is scraped off. The scraped solid 16 is guided to the upstream end surface of the scraper 20 by the convex piece 22 formed on the slope inclined with respect to the radial direction of the scraper 20 and the end surface of the support member 32 in the rotational direction D of the strainer 12. It is taken out from an outlet 34 arranged in
The drive means 36 rotates the strainer 12, can be realized by a motor or the like, and continuously rotates the strainer 12 during the solid-liquid separation operation.

  With this configuration, the clearance between the end faces of the circular ring body 14 serving as a liquid water passage, and the solid matter 16 adhering to the end faces and the outer peripheral surface are constantly scraped off by the scraper 20, so that the strainer 12 is clogged. do not do. Moreover, since the length of the water flow path of the liquid passing through the strainer 12 is the width A of the end surface of the circular ring body 14, the plate of the plate material that constitutes the strainer 12 as in the conventional structure having a small hole as the water flow path. It becomes possible to make it sufficiently long compared to the case where only the length of the thickness could be secured. Accordingly, the amount of solid matter adhering to the inner surface of the water passage increases accordingly, so that the solid-liquid separation performance is improved.

Next, an embodiment of the solid-liquid separator 10 will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected about the same structure as the basic composition mentioned above, and detailed description is abbreviate | omitted.
The entire configuration of the solid-liquid separator 10 includes a strainer 12, a case 24, a scraper 20, and drive means 36 that rotationally drives the strainer 12.

A more detailed structure will be described for each component.
In the strainer 12, a plurality of circular ring bodies 14 are stacked with a gap therebetween and formed into a cylindrical body. The circular ring body 14 includes a flat plate-shaped first circular ring body 14a and a first circular ring body. There are two types of plate-like second circular ring bodies 14b that are formed to have the same outer diameter as 14a and have a plurality of protrusions 38 (three in FIG. 3 as an example) formed on the outer peripheral surface at predetermined angular intervals.
The strainer 12 includes a plurality of first circular ring bodies 14a interposed between the second circular ring bodies 14b (for example, one in FIGS. 4 and 5), and the circular ring bodies 14a and 14b are connected to each other. Each of the circular ring bodies 14a and 14b is formed into a cylindrical body by laminating a plurality of sheets with a predetermined interval between them. In addition, as a means for providing an interval, the first circular ring bodies 14a and 14b are integrally coupled through the insertion holes 40 formed on the inner sides of the respective circular ring bodies 14a and 14b. Although the spacer 44 externally fitted to the stay 42 is used, the present invention is not limited to this.

Further, as an example, a Y-shaped spoke 46 is connected to the inside of the strainer 12, and a rotation shaft 48 with at least one end projecting outward from the case 24 is supported at the center, and both ends are supported by the case 24 so as to be rotatable. It is provided in the state that was done. The strainer 12 is rotationally driven by the drive means 36 at one end of the rotating shaft 48 and rotates in the direction of the arrow. Note that the rotation of the strainer 12 by the driving means 36 may be continuous rotation, a rotation driving method in which rotation and stop are repeated at regular intervals, or a rotation driving method in which rotation is performed at an arbitrary time.
In addition, the laminated structure of the second circular ring body 14b in which the protrusion 38 is formed on the outer peripheral surface is arranged along the axial direction of the strainer 12 on the outer peripheral surface of the strainer 12 formed in the cylindrical body by the protrusion 38. It is set as the structure laminated | stacked so that the rib part 50 extended may be formed. That is, when the strainer 12 is viewed from one end face side, the protrusion 38 formed on the next second circular ring body 14b is directly behind the protrusion 38 formed on one second circular ring body 14b. The structure to be arranged. Thereby, a plurality of rib portions 50 extending in parallel with the axial direction of the strainer 12 are formed on the outer peripheral surface of the strainer 12. In addition, since the 1st circular ring body 14a is interposed between the 2nd circular ring bodies 14b in the rib part 50 comprised by the projection part 38, the clearance gap has arisen.

A cylindrical housing portion 26 that houses the strainer 12 is formed inside the case 24. The strainer 12 is accommodated in the cylindrical accommodating portion 26 with its rotation axis, that is, the rotation shaft 48 connected to the strainer 12 being horizontal. The opening portions at both ends of the strainer 12 are closed by a pair of opposing inner wall surfaces of the cylindrical housing portion 26, and the movement of the liquid between the outer region C and the inner region B of the strainer 12 is mainly circular. It is in a state performed through the gap between the ring bodies 14.
Further, an inlet 28 for introducing a mixture of solid and liquid is opened on the inner wall surface of the bottom portion included in the outer region C of the strainer 12 of the cylindrical housing portion 26, and the cylindrical shape included in the inner region B of the strainer 12. A discharge port 30 that discharges the liquid separated from the solid matter 16 to the outside of the case 24 opens on the inner wall surface of the housing portion 26. The introduction port 28 is formed so as to open at a position lower than the discharge port 30, and the lower part of the strainer 12 is immersed in this mixture in a state where the mixture is always accumulated in the lower part of the cylindrical housing portion 26. Is exposed from the liquid surface F of the mixture.

Further, the upper inner peripheral surface of the cylindrical housing portion 26 included in the outer region C of the strainer 12 extends along the rotation axis direction of the strainer 12, is separated from the liquid, and is separated from the liquid by the rib portion 50. An outlet 34 for opening the solid material 16 conveyed along the inner peripheral surface to the outside of the case 24 is opened.
The take-out port 34 opens into a space in the cylindrical storage portion 26 above the liquid level F of the mixture, and the position thereof is disposed downstream of the top of the strainer 12 in the rotational direction of the strainer 12 and the scraper 20. It is arrange | positioned rather than the upstream of the rotation direction of the strainer 12.

A lid 52 is disposed at the outlet 34 of the case 24 so as to close the outlet 34. Specifically, one side of the lid body 52 is rotatably attached to the end portion of the outlet 34 on the upstream side in the rotational direction D of the strainer 12, and the other side on the downstream side in the rotational direction D of the strainer 12 has this side. It is swingable as the center.
The lid 52 is constantly urged toward the strainer 12 by urging means (for example, a spring) 54 disposed on the back side of the surface (inner surface) facing the strainer 12.
The function of the lid 52 is to press the solid material 16 that is pressed and conveyed by the rib portion 50 formed on the outer peripheral surface of the strainer 12 against the outer peripheral surface of the strainer 12, and thereby the liquid component contained in the solid material 16. Squeeze out. A configuration in which the solid body scraped off by the scraper 20 is directly discharged from the outlet 34 to the outside of the case 24 without providing the lid 52 and the biasing means 54 is also possible.

Furthermore, the shape of the inner peripheral surface when cut along a plane orthogonal to the rotation axis 48 of the cylindrical housing portion 26 of the present embodiment is between the outer peripheral surface of the strainer 12 and the inner peripheral surface of the cylindrical housing portion 26. The interval is a shape in which at least part of the throttle region E gradually narrows from the inlet 28 to the outlet 34 along the rotational direction D of the strainer 12.
In FIG. 3, the throttle region E corresponds to a region between the inlet 28 and the vicinity of the outlet 30. The throttle region E may be formed in a part of the region from the inlet 28 to the outlet 34 in this way, or the entire region from the inlet 28 to the outlet 34 is spaced. It is good also as a structure which narrows little by little. Further, it may be provided in the vicinity of the lid body 52 instead of in the vicinity of the introduction port 28.
As described above, the structure having both the lid 52 and the throttle region E has a structure in which the amount of liquid contained in the solid material 16 is reduced as much as possible to enhance the solid-liquid separation ability.
It should be noted that if either one of the lid 52 or the aperture region E has sufficient separation capability, it is possible to adopt a configuration in which only one of them is arranged, and the structure can be simplified and the product cost associated therewith can be reduced. It is also possible to adopt a structure in which none is provided for reasons such as reduction.

As shown in FIG. 5, the scraper 20 is configured by laminating a plurality of flat plates, and the arrangement is arranged on the downstream side in the rotational direction of the strainer 12 from the top of the strainer 12 as shown in FIG. 3. . Further, with respect to the outlet 34, the outlet 34 is disposed in the vicinity of the outlet 34 on the downstream side in the rotational direction D of the strainer 12.
In this embodiment, the scraper 20 and the outlet 34 are arranged on the downstream side in the rotational direction of the strainer 12 with respect to the top of the strainer 12, but may be near the top of the strainer 12, and further, the strainer 12. It may be arranged at a position that does not reach the liquid level F of the mixture, on the upstream side in the rotational direction of the strainer 12 from the top of the top.

  The specific configuration of the scraper 20 is formed of a plate material having the same thickness as each of the first circular ring bodies 14a constituting the strainer 12, and the tip protrudes toward the outer peripheral surface of the first circular ring body 14a. A plate-like first convex piece 56 that scrapes off the solid matter 16 adhering to the outer peripheral surface of the first circular ring body 14a, and a gap formed between the first circular ring body 14a and the second circular ring body 14b. A thin plate-like second convex piece 58 formed by using a plate material having the same thickness, the tip side thereof entering this gap, and scraping off the solid matter 16 adhering to each end face of the circular rings 14a, 14b, and a strainer 12 and a support piece 60 formed of a plate material having the same thickness as the plate thickness of each of the second circular ring bodies 14b having protrusions 38 on the outer peripheral surface.

Then, in correspondence with the stacking order of the first circular ring body 14a and the second circular ring body 14b constituting the strainer 12, the first convex piece 56, the second convex piece 58, and the support piece 60 are stacked in a predetermined order. The second stays 64 are made to pass through the holes 62 that are opened in the respective holes. Generally, the gap between the circular ring bodies 14a and 14b is configured to be narrower than the thickness of the circular ring bodies 14a and 14b. Therefore, the thickness of the second convex piece 58 entering the gap between the circular ring bodies 14a and 14b is thinner than the thickness of the circular ring bodies 14a and 14b, and the strength is insufficient. The second convex piece 58 is sandwiched and reinforced by the first convex piece 56 and the support piece 60 which are located at the same position. 4 and 5, the first circular ring body 14a is arranged at both ends of the strainer 12. Therefore, the stacking order of the scrapers 20 is the first convex piece 56, the second convex piece 58, and the support. The pieces 60 and the second convex piece 58 are repeated as a basic unit, and the first convex piece 56 comes to the end and comes to the end.
Moreover, in FIG. 5, the shape of the 1st convex piece 56 arrange | positioned at the both ends of the scraper 20 is a shape which has a wider area unlike the shape of the 1st convex piece 56 arrange | positioned in an intermediate part. This is because the scraper 20 is provided with a function of covering the lid body 52 disposed on the upstream side in the rotational direction D of the strainer 12 so as to be sandwiched from both sides.

Subsequently, the operation of the solid-liquid separator 10 will be described.
The driving means 36 is operated so that the strainer 12 is continuously rotated inside the case 24.
In this state, the mixture of the solid material 16 and the liquid is introduced from the introduction port 28 into the outer region C of the strainer 12 below the cylindrical housing portion 26. Then, the liquid enters the internal region B of the strainer 12 through the gap between the first circular ring body 14a and the second circular ring body 14b constituting the strainer 12, and is discharged from the discharge port 30 to the outside of the case 24. .
On the other hand, the clearance between the first circular ring body 14a and the second circular ring body 14b is set to an interval that does not allow the solid material 16 to pass through this clearance in consideration of the external dimensions of the solid material 16 that is desired to be separated from the liquid. Since it is set, most of the solid material 16 accumulates on the outer peripheral surface of the strainer 12. Further, a part of the solid matter 16 having a small outer dimension enters the gap between the first circular ring body 14a and the second circular ring body 14b, but passes through the strainer 12 as compared with the case of the strainer 12 of the conventional example. The difference between the outer diameter and the inner diameter of each of the circular ring bodies 14a, 14b is set so that the length of the water passageway to be increased. Therefore, most of the solid matter 16 that has entered adheres to the end faces of the first circular ring body 14a and the second circular ring body 14b. Thereby, primary solid-liquid separation is performed.

  Further, the position of the liquid level F of the mixture in the cylindrical container 26 is such that the liquid discharge port 30 is formed slightly above the introduction port 28 as shown in FIG. It will be in the position. Therefore, the mixture always accumulates in the lower part of the cylindrical housing part 26, and the lower part of the strainer 12 is always immersed in the liquid mixture. With this structure, the mixture introduced from the introduction port 28 mixes with the mixture previously introduced into the cylindrical housing portion 26, and thus further diffuses in the mixture in which the solid contained in the mixture has accumulated, Only a part of the outer peripheral surface of the strainer 12 can be prevented from coming into contact with the liquid mixture having an extremely high solid concentration. Thereby, it can prevent that many solid substances adhere only to a part of outer peripheral surface of the strainer 12, and only that part is temporarily clogged.

The solid matter 16 collected on the outer peripheral surface of the strainer 12 is collected by the rib portion 50 formed on the outer peripheral surface, and is transferred along the inner peripheral surface of the cylindrical housing portion 26 as the strainer 12 rotates. The
The inner peripheral surface of the cylindrical housing portion 26 has a bottom surface portion that is substantially flat and gradually rises in an arc shape in the rotational direction of the strainer 12. Therefore, the gap between the outer peripheral surface of the strainer 12 and the inner peripheral surface of the cylindrical housing portion 26 is gradually narrowed at the portion that transitions from the flat surface to the arc shape, and this portion becomes the throttle region E.
As a result, the solid material 16 collected and pushed by the rib portion 50 is sandwiched between the outer peripheral surface of the strainer 12 and the inner peripheral surface of the cylindrical housing portion 26 when passing through the throttle region E. Further, the liquid component contained inside is squeezed out. Thereafter, the solid 16 exits the liquid level F of the mixture. Thereby, secondary solid-liquid separation is performed. The squeezed liquid passes through the strainer 12 and enters the inner region B, and is discharged from the discharge port 30. Further, when the rib portion 50 comes out of the liquid surface F of the mixture, the solid material 16 is in a state of being placed on the rib portion 50. In some cases, the portion 50 comes out to the back side and is mixed with the mixture again.

Thereafter, as the strainer 12 rotates, the solid material 16 is pushed by the rib portion 50 and moves in the region above the liquid surface F along the inner peripheral surface of the cylindrical housing portion 26. Also at this time, the liquid oozing out from the solid material 16 passes through the strainer 12 and falls to the inner region B of the lower strainer 12 each time. Therefore, the solid-liquid separation operation is performed during this movement.
In the present embodiment, the scraper 20 and the outlet 34 are arranged on the downstream side in the rotational direction of the strainer 12 with respect to the top of the strainer 12, so that they adhere to the strainer 12 or the rib portion 50. The distance by which the solid matter 16 that has been scraped off and comes out of the liquid surface F of the mixture reaches the scraper 20 and the outlet 34 in the space above the liquid surface F is increased. Therefore, the opportunity for the liquid to ooze out from the inside of the solid material 16 is increased, and the solid-liquid separation performance is further improved as compared with the case where the liquid is discharged from the liquid surface F and scraped immediately.
Further, since the solid material 16 conveyed by the strainer 12 is scraped off by the scraper 20 while moving downward from the top of the strainer 12, the scraped solid material 16 can be easily removed. It leaves | separates from and is discharged | emitted from the extraction port 34. Therefore, the solid material 16 can be scraped and discharged efficiently.

Further, once the conveyed solid material 16 passes through the top of the strainer 12 and then enters the area of the outlet 34, it is provided in the outlet 34 and is constantly urged toward the strainer 12 by the urging means 54. The liquid component in the inside is squeezed out by the lid body 52. Thereby, the third solid-liquid separation is performed.
Here, the liquid coming out of the solid material 16 squeezed by the lid 52 passes through the gaps between the circular ring bodies 14 a and 14 b of the strainer 12 and moves to the inner region B of the strainer 12. Further, the inner surface of the support piece 60 that is disposed so as to be opposed to the outer peripheral surface of each second circular ring body 14b that constitutes the scraper 20 and has the protrusions 38 on the outer peripheral surface, and the outer peripheral surface of the second circular ring body 14b. And it falls below the cylindrical accommodating part 26 via the arc-shaped flow path 66 comprised with the wall surface of the 2nd convex piece 58 arrange | positioned so that the support piece 60 may be pinched | interposed. In some cases, the rib 50 moves to the back side of the rib portion 50 and passes through the gap between the circular ring bodies 14 a and 14 b and moves to the inner region B of the strainer 12.

When the solid material 16 reaches the middle of the region of the lid body 52, the solid material 16 attached to the outer peripheral surface of the first circular ring body 14a constituting the strainer 12 by the first convex piece 56 of the scraper 20 is scraped off. Be started. Further, the solid matter 16 attached to the end faces of the first circular ring body 14a and the second circular ring body 14b by the second convex piece 58 is also scraped off.
The solid material scraped off by the scraper 20 is transferred from the strainer 12 to the upper surface of the scraper 20. Since the upper surface of the scraper 20 is formed on a slope extending downward along the tangential direction of the strainer 12, the solid matter 16 delivered to the upper surface falls outside the case 24 by dropping along the slope. Will be guided and discharged.

As described above, various preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments. For example, depending on the structure of the scraper 20, the rotation shaft 48 of the strainer 12 may be disposed in the horizontal direction. In addition, for example, it is possible to adopt a configuration in which they are arranged obliquely. In this case, at least the scraper 20 and the outlet 34 are in a range located outside the liquid level F of the mixture accumulated in the lower part of the storage unit 26.
Further, for example, in addition to making the shape of the rib part 50 formed by the protrusion 38 formed on the second circular ring body 14b adjacent to the outer peripheral surface of the strainer 12 linear, this protrusion The second circular ring body 14b may be laminated so that the portion 38 is slightly shifted, and the rib portion 50 may be formed on the outer peripheral surface of the strainer 12 in a spiral shape. In this structure, since the solid material 16 conveyed by the one rib portion 50 passes while crossing the throttle region E obliquely, the resistance force applied to the driving means 36 for driving the strainer 12 is such that the rib portion 50 is linear. Thus, the strainer 12 can be driven with a small driving force. In general, the structure in which the strainer 12 is rotationally driven and the scraper 20 is fixed is generally used. However, a configuration in which the strainer 12 is stopped and the scraper 20 side is driven is also possible.
Further, the outer diameter of the circular ring body 14 to be stacked can be gradually changed along the stacking direction so that the outer shape of the strainer 12 is a truncated cone.

Further, the configuration of the solid-liquid separator 10 is configured such that the interval between the outer peripheral surface of the strainer 12 and the inner peripheral surface of the cylindrical housing portion 26 around the strainer 12 is as shown in FIG. It is also possible to minimize the interval and then gradually increase toward the vicinity of the outlet 34. According to this, the force applied to the solid material 16 conveyed by the strainer 12 from the outer peripheral surface of the strainer 12 and the inner peripheral surface of the cylindrical housing portion 26 can be gradually released, and the solid material 16 is conveyed by the rib portion 50. There is an effect that the solid material 16 can be smoothly discharged.
In FIG. 6, the cross-sectional shape of the inner peripheral surface of the cylindrical housing portion 26 is substantially circular, and the strainer 12 having a circular cross-section is disposed therein with the rotation shaft 48 being eccentric from the center of the cylindrical housing portion 26. . As a result, the distance between the outer peripheral surface of the strainer 12 and the inner peripheral surface of the cylindrical housing portion 26 is minimized at a midway portion between the inlet port 28 and the outlet port 34. This solid-liquid separator 10 has a structure without the lid 52.

  Further, in the above-described embodiment, the solid-liquid separation device used for the garbage dehydration apparatus and separating the crushed garbage and water has been described as an example, but other than separation of garbage and water. Needless to say, it can also be used.

It is explanatory drawing for demonstrating the basic concept of the solid-liquid separator which concerns on this invention. It is sectional drawing along the rotating shaft direction of FIG. It is front sectional drawing for demonstrating the structure of one embodiment of the solid-liquid separator which concerns on this invention. It is a side view which shows the structure of the strainer of FIG. FIG. 4 is an exploded view showing the structure of the strainer of FIG. 3. It is front sectional drawing for demonstrating the structure of other embodiment of the solid-liquid separator which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Solid-liquid separator 12 Strainer 14, 14a, 14b Circular ring body 16 Solid material 18 Liquid 20 Scraper 22 Convex piece 24 Case 26 Storage part 28 Inlet port 30 Outlet port 32 Support material 34 Outlet 36 Drive means 38 Protrusion part 40 Insertion Hole 48 Rotating shaft 50 Rib portion 52 Lid 54 Biasing means 60 Support piece

Claims (9)

A plurality of flat circular ring bodies are stacked with a predetermined gap between the end faces, and a strainer formed in a cylindrical shape is rotated around a rotation shaft that supports the strainer, and is placed in an outer region of the strainer. In the solid-liquid separation device that separates the solid from the mixture by allowing only the liquid to pass between the end faces of the circular ring body from the introduced solid and liquid mixture,
The strainer is accommodated in a case in a state where the rotating shaft is horizontal and both end openings of the strainer are closed,
In the case, an inlet for the mixture is formed in an outer region of the strainer, and an outlet for discharging the liquid that has passed between the end faces of the circular ring body is formed in the inner region of the strainer. On the other hand, in the outer region of the strainer on the downstream side in the rotational direction of the strainer, an outlet for taking out the solid separated from the mixture to the outside of the case is formed,
In proximity to the outlet of the case, with the circular ring members each of the end faces between a flat plate-like projections piece tip you enter the of the lower outer surface lid abuts along the tangential direction of the strainer A scraper formed on the extending slope is attached,
One or more protrusions for conveying the solid contained in the mixture are formed on the outer peripheral surface of at least one of the circular ring bodies ,
Wherein the case, the arc-shaped inner peripheral surface the cylindrical containing portion is formed along the moving direction of the projection portion is formed,
The scraper is formed to have the same thickness as the plate thickness of the circular ring body, and is provided with a support piece that is laminated on the flat plate-shaped projecting piece and has an outer surface serving as a slope of the scraper. The support piece disposed at the position of the arc-shaped flow is formed by the inner surface of the support piece, the outer peripheral surface of the circular ring body, and the wall surface of the flat plate-like piece disposed so as to sandwich the support piece. Attached to form the road,
The lid body is rotatably supported on one side of the take-out port on the upstream side in the rotational direction of the strainer so as to face the scraper, and the other side on the downstream side in the rotational direction of the strainer is swung around the one side as a fulcrum. A solid-liquid separation device characterized in that the solid-liquid separation device is provided so as to be movable and constantly urged against the scraper by urging means .   The introduction port is provided at the bottom of the case, the discharge port is provided at a position higher than the introduction port, and the outlet is provided at a position higher than the discharge port. The solid-liquid separator according to claim 1.   The strainer is provided in a form in which ribs extending in the axial direction of the strainer are formed by the projections at a plurality of locations in the circumferential direction by stacking circular ring bodies by aligning the circumferential positions of the projections. The solid-liquid separation device according to claim 1, wherein the solid-liquid separation device is provided.   The strainer is provided in a form in which protrusions are spirally arranged on the outer peripheral surface of the strainer by laminating a circular ring body by sequentially deviating the circumferential position of the protrusions. The solid-liquid separation device according to claim 1 or 2, characterized in that   The circular ring body is formed in a flat plate-shaped first circular ring body and a flat plate-shaped first ring having the same outer diameter as the first circular ring body, and a plurality of protrusions formed on the outer peripheral surface at predetermined angular intervals. The solid-liquid separation device according to claim 3 or 4, further comprising a two-circular ring body. The scraper is a plate-like first convex piece that scrapes off the solid matter attached to the outer peripheral surface of the circular ring body;
A second convex piece that penetrates the tip side into the gap between the circular ring bodies and scrapes off the solid matter adhering to the end faces of the circular ring bodies;
The solid-liquid separation device according to any one of claims 1 to 5, further comprising a support piece for sandwiching the second convex piece . The said scraper is formed so that a part of arc-shaped inner peripheral surface of the said cylindrical accommodating part along the movement direction of the said projection part may be comprised . The solid-liquid separator according to one item . A throttle region in which the distance between the outer peripheral surface of the strainer and the inner surface of the case gradually narrows along the rotation direction of the front strainer is provided in a part from the inlet to the outlet. The solid-liquid separator as described in any one of Claims 1-7. The scraper is formed so as to constitute a part of an arc-shaped inner peripheral surface along a moving direction of a protrusion provided on the circular ring body, in contact with an outlet of the case. The solid-liquid separator according to any one of claims 1 to 7.

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