JPH11157631A - Conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the sticking of a conveyed object even when the conveyed object has a feature easily, sticking to a conveying device by arranging a plurality of rollers made of a cylindrical porous body capable of oozing or spouting a fluid to the outside from a hollow section, and forming a conveyance path on the upper face side of the rollers. SOLUTION: A plurality of rollers 2 made of a cylindrical metal porous body 1 generated via the external isotropic pressurization and sintering of a general structure steel capsule sealed with metal grains are arranged to form a roller conveyor, and a conveyance path 4 is formed on the upper face side of multiple rollers 2. A fluid 3 is injected into the hollow sections 2a of the rollers 2 from injection ports provided on side plates, and it is spouted to the outside 2b of the rollers 2 through the vent holes of the metal porous bodies 1. The fluid 3 is diagonally spouted in the fixed direction from the outside surfaces of the rollers 2, the rollers 2 are rotated to the opposite side to the spouting direction to convey a conveyed object 10 under the machining process on the conveyance path 4 in the same direction, and the conveyed object 10 is washed by the spouted fluid 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a transfer device. More specifically, when all or some of the objects to be conveyed have a property of easily adhering to each other or to the conveying device, such adhesion can be suppressed or the adhering matter can be easily removed. It relates to a transport device.

[0002]

2. Description of the Related Art As an example of a material having a property that all or a part of a conveyed object easily adheres to a conveying device, a seafood conveyed by a belt conveyor, a roller conveyor, or the like in a seafood processing factory is known. is there. In this case, since it is necessary to transport blood and body fluids and the like coming out of the fish and shellfish while cleaning, for example, a transport device that allows water to flow in a gutter-like transport path and simultaneously performs transport and cleaning by a water flow has been used. . In addition, food materials such as cheese and butter, and other materials such as thermoplastic resin in a softened or molten state that is easily deformed in a plastically adhered state, may adhere to or deform in contact with other materials during transportation, or Since a part of the material easily adheres to the contact surface with the transfer device, in order to avoid contact between the transferred object and the transfer device, water is supplied to the transfer path in the same manner as described above, and the transfer path is subjected to cleaning treatment or coating. A method is employed in which a conveyed object is conveyed while being cooled and solidified.

[0003]

In the above-described conventional transport apparatus or method, the fluid such as water supplied to the transport path is supplied from the upstream side in the transport direction and is recovered at the downstream side. There is a problem that the filth washed on the side is not completely collected on the downstream side but adheres and accumulates on the way on the downstream side of the transport path. In addition, the lower the cleaning fluid is, the lower its cleanliness is, and the conveyed object to be cleaned may be contaminated with the fluid having reduced cleanliness.

Further, the above-described conventional transfer apparatus or method has a problem that it is difficult to control the temperature of the fluid in a constant temperature range over the entire length of the transfer path when cooling the transferred object with the fluid. It is unsuitable when control of temperature conditions for the transferred object is also required.

[0005] Therefore, an object of the present invention is to solve the above-mentioned problems, and all or some of the objects to be conveyed mutually or
Even if it has a property that easily adheres to the transfer device, the transfer device can suppress such adhesion, or can easily remove the attached matter, and further, control the temperature condition for the transferred object. It is an object of the present invention to provide a transfer device that can be easily performed at the same time.

[0006]

According to a first aspect of the present invention, there is provided a conveying apparatus for achieving the above object. A plurality of rollers formed of a cylindrical porous body capable of exuding or ejecting a fluid are provided in parallel, and a transport path is formed on the upper surface side of the plurality of rollers. Here, in this specification, a roller is a drive roller that rotates or rotates around its rotation axis by applying a rotational driving force from outside, or simply rotates or rotates freely around the rotation axis. It means a free idle roller, and all the rollers may be either one type of roller or a type in which both types of rollers are mixed. In addition, leaching or squirting means that the momentum of a fluid moving from the inside of the porous body to the outside is widespread, and between the two, that is, squirting close to swelling and squirting close to squirting Is also included.

[0007] The second feature configuration is, in addition to the first feature configuration, described in claim 2 of the claims section.
The present invention is characterized in that a part or all of the upper part of the transport path is provided with a ceiling plate made of a porous body capable of exuding or ejecting fluid from the upper surface side to the lower surface side.

[0008] The third feature is that, as described in claim 3 of the claims, a roller formed of a cylindrical porous body capable of exuding or ejecting fluid from the hollow portion toward the outside. A plurality of juxtaposed, a conveying device having a conveying path formed on the upper surface side of the plurality of rollers, or a conveying plate formed of a porous body capable of exuding or ejecting fluid from the lower surface toward the upper surface, A transport device having a transport path formed on an upper surface side of the transport plate, wherein a direction in which the fluid of the porous body is exuded or ejected is aligned in a predetermined oblique direction with respect to a surface of the porous body. It is in.

A fourth feature of the invention is that, as described in claim 4 of the claims, a carrier plate made of a porous body capable of seeping out or ejecting fluid from the lower surface toward the upper surface is provided. A transport device having a transport path formed on the upper surface side of the transport plate, wherein a pore diameter and / or a porosity of the porous body are different in a surface of the porous body. .

The fifth characteristic configuration is that, as described in claim 5 of the claims, a cylindrical porous inner cylinder is inserted into a cylindrical nonporous outer cylinder, A fluid passage is formed between the porous outer cylinder and the porous inner cylinder, a transport path is formed inside the porous inner cylinder, and an outer surface of the porous inner cylinder is directed from an outer surface to an inner surface. The fluid can be exuded or ejected.

According to a sixth characteristic configuration, as described in claim 6 of the claims, a transport plate made of a porous body capable of exuding or ejecting fluid from the lower surface to the upper surface is provided. A transport device having a transport path formed on the upper surface side of the transport plate, or a transport device having the first, second, third, fourth, or fifth characteristic configuration, A porous sintered body having a multilayer structure in the thickness direction, wherein the particle size of the sintered material of the porous sintered body is such that the particle size of the surface layer facing the conveying path side is the particle size of the other layers. The point is smaller than the diameter. In the case of a roller made of the porous sintered body, an arbitrary position state can be taken around the rotation axis thereof.
The surface layer facing the transport path side of the roller means a surface layer facing the outside of the roller.

The operation and effect will be described below. According to the first characteristic configuration, the plurality of arranged rollers constitutes a so-called roller conveyor, and the article to be transported is transported in a predetermined direction. Further, since the cleaning fluid oozes or gushes from each roller surface, the transported object is formed on the roller surface over the entire length of the transport path formed on the upper surface side of the roller. The adhesion of the adhered substance to the transported object itself is suppressed while the adhered substance to the roller surface is suppressed by the coating film. Moreover,
Over the entire length of the transport path, regardless of whether it is upstream or downstream with respect to the transport direction, since the clean fluid oozes or gushes from the roller surface, the transported object is always in a cleaning state. It can be maintained. In particular, since the fluid used for cleaning falls down from the gap between the rollers, the dirty fluid after use is not transported together with the transported object, and the cleaning effect is promoted. . Further, by keeping the temperature of the fluid oozing or ejecting from the roller surface constant, it is possible to control the temperature of the film of the fluid formed on the roller surface within a certain range over the entire length of the transport path, and It is possible to cope with the case where the control of the temperature condition for the conveyed object is also required.

Further, according to the second characteristic configuration, the effect of suppressing adhesion or the effect of cleaning the transported object or the transport path can be enhanced.

According to a third characteristic configuration, in the case of a transport device having a plurality of the rollers arranged in parallel, the rollers rotate in a certain direction by a fluid oozing or jetting from the roller surface, and the transported device is transported. The object can be conveyed in a certain direction, and there is no need to apply a rotational driving force to the roller from outside, and in the case of a conveyance device including the conveyance plate, the film of the fluid formed on the surface of the conveyance plate is By moving in the horizontal component direction of the oozing or ejecting direction of the fluid, the article can be conveyed in the same direction, and in any case, the oozing or squirting of the fluid simultaneously prevents adhesion and transport of the article. You can do it.

According to the fourth characteristic structure, the portion of the surface of the carrier plate where the pore diameter or the porosity of the porous body is large has a low resistance to seepage or ejection of the fluid and a thick fluid film on the surface. On the contrary, the portion of the surface of the transport plate where the pore diameter or porosity of the porous body is small has high resistance to seepage or ejection of the fluid, and can form a thin fluid film on the surface, and the thickness of the fluid film can be reduced. Can be arbitrarily changed within the surface of the transport plate. As a result, the transport speed of the transported object can be accelerated or decelerated on the way, and the processing time can be adjusted when another process is performed during the transport.

According to the fifth characteristic configuration, it is possible to form a tubular transport path in which a part or all of the transported object is unlikely to adhere to the inner wall of the pipe and does not require maintenance such as cleaning of the inner wall of the pipe. In particular, it is suitable for conveying a fluid or the like.

According to the sixth aspect, the pore size of the surface layer can be made smaller than that of the other layers by reducing the particle size of the sintered material of the surface layer on the side of the conveyance path, and the fluid seepage can be reduced. Alternatively, the ejection speed is determined by the hole diameter of the surface layer, and the fluid can be ejected at a high speed even when the supply pressure of the fluid is small. In addition, the other layers have a large grain size of the sintered material, serve exclusively to secure the mechanical strength of the carrier plate, and can reduce the thickness of the carrier plate.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the above-described transport apparatus according to the present invention (hereinafter, referred to as the present apparatus) will be described below with reference to the drawings. As shown in FIGS. 1 to 3, the first embodiment of the device of the present invention is characterized in that SUS316 metal particles are encapsulated in a steel capsule for general structural use, and then sintered by isostatic pressing from the outside of the capsule. The center of both side plates 2c of a hollow cylindrical body in which circular side plates 2c are welded to both ends of a cylindrical metal-based porous body 1 formed as described above is rotatably supported around an axis connecting the centers. A plurality of rollers 2 are arranged side by side so that their rotation axes are parallel in the horizontal direction to form a so-called roller conveyor, and a transport path 4 is formed on the upper surface side of the plurality of rollers 2. As shown in FIGS. 2 and 3, the cylindrical metal-based porous body 1 has a diameter of 30 mm.
And a porous body 1a having a thickness of 3 mm and further having a two-layer structure in the thickness direction and facing the outer transport path 4
Has a thickness of about 1 mm, an average pore diameter of about 20 μm, and a porosity of about 25.
%, The inner porous body 1b has a thickness of about 2 mm,
It has an average pore size of about 90 μm and a porosity of about 25%. Such a two-layer structure is formed by making the average particle size of the SUS316 metal particles of the outer layer smaller than that of the inner layer. Here, the vent hole of the outer porous body 1a is a fluid 3
The inner porous body 1b has a large hole diameter and a low airflow resistance so that the wall thickness can be set large, and functions as a support structure for the outer porous body 1a. . Note that the vent hole is hereinafter referred to as a vent hole for convenience regardless of whether the fluid is a gas or a liquid. Further, the outer surface of the metal-based porous body 1 is cut by a lathe. By unifying the cutting direction to a constant circumferential direction, as shown in FIG. The orientation is unified by inclining in the cutting direction from the radial direction with respect to the outer surface.

The pressurized water as the fluid 3 is injected into the hollow portion 2 a from the water inlet provided on one or both of the side plates 2 c to the roller 2, and is passed through the vent hole of the metal-based porous body 1. It is configured to be able to jet to the outside 2 b of the roller 2. The pressure of the pressurized water is 1-4 kg / c.
About m ² is appropriate. In this case, since the pressurized water spouts from the outer surface of the roller 2 in an oblique constant direction, the pressurized water rotates in a direction opposite to the spouting direction, and conveys the conveyed object 10 in the conveyance path 4 in the same direction. The conveyed object 10 is washed with the jetted pressurized water.

An example of the transferred object 10 is a fish or the like that is being processed. In this case, the seafood and the like being processed are always washed with clean water, and the blood and body fluids coming out of the seafood and the water used for the washing are directly used as the roller 2.
It is dropped and collected from the gap between them. Therefore, there is no concern that the conveyed object 10 such as fish and shellfish will be re-contaminated with the blood, the body fluid, and the water used for washing, so that it is sanitary.

As shown in FIGS. 4 and 5, a flat metallic porous material of the same material and the same two-layer structure as that of the roller 2 is provided so as to cover the transport path 4 of the first embodiment from above. A ceiling plate 5 formed of the body 1 is provided, and a fluid passage 9 for supplying the same pressurized water as the fluid 3 supplied to the roller 2 to the ventilation hole of the ceiling plate 5 is provided above the ceiling plate 5. Thus, the effect of cleaning the transferred object 10 may be improved. In the two-layer structure of the ceiling plate 5,
The average pore diameter and porosity on the lower layer side and the upper layer side are set corresponding to the average pore diameter and porosity on the outside and inside of the two-layer structure of the roller 2, respectively. Further, the fluid supplied to the ceiling plate 5 is not necessarily the same as the fluid 3 supplied to the roller 2, and can be appropriately changed according to the processing content provided during the transport process. For example, when the transported object 10 is a fish or the like, the ceiling plate 5 is provided downstream of the transport path 4,
For example, a fluid such as ion water for sterilization may be supplied.

As shown in FIGS. 7 and 8, in the second embodiment of the present invention, the SUS316 metal particles are encapsulated in a steel capsule for general structural use, and thereafter, are pressed isostatically from outside the capsule. A transport plate 6 made of a flat metallic porous body 1 formed by sintering, and a fluid passage 9 for supplying pressurized water as a fluid 3 to a vent hole of the transport plate 6 on the lower surface 6a. The pressurized water is ejected from the lower surface 6a of the transport plate 6 toward the upper surface 6b to form the transport path 4 on the upper surface 6b of the transport plate 6.

The metallic porous body 1 of the transport plate 6 is also formed in a two-layer structure in the thickness direction as in the first embodiment, and the porous body 1a facing the transport path 4 on the upper surface side. Has a thickness of about 1 mm, an average pore diameter of about 20 to 40 μm, and a porosity of about 2
The porous body 1b on the lower surface side is formed to have a thickness of about 2 mm, an average pore diameter of about 90 μm, and a porosity of about 25%. Further, the average pore diameter and the porosity of the porous body 1a on the upper surface side 6b vary greatly within the above range along the transport direction. The change of the average pore diameter and the porosity along the transport direction of the porous body 1a on the upper surface side 6b is also realized by changing the average particle diameter of the SUS316 metal particles, similarly to the change in the thickness direction.

Further, the upper surface side 6b of the metallic porous body 1
The surface of the is cut by a lathe, but by unifying the direction of the cutting process in a certain direction along the surface, the orientation of the ventilation holes in the cutting direction from the direction perpendicular to the surface. It is inclined and unified. Since the direction of the pressurized water ejected from the vent hole is not vertically upward but obliquely upward due to such cutting, the film of the pressurized water formed in the transport path 4 flows in a certain direction, and is placed thereon. The transported object is transported toward the downstream side of the flow. Further, since the thickness of the film of the pressurized water and the jetting speed change along the conveying direction, the conveying speed of the object to be conveyed can be changed along the conveying path 4, and during the conveyance, There is an advantage that a processing time can be secured when processing other than cleaning is required for the transported object.

As an example of the transferred object in the second embodiment, there is a seafood or the like which is being processed as in the first embodiment. In the second embodiment, the transport path 4
Since it is formed continuously without gaps, it is applied to the case where a fluid such as a thermoplastic resin in a molten state is solidified while being conveyed. In this case, the coating of the pressurized water formed on the transport path 4 prevents the transported object from adhering to the upper surface side 6b of the transport plate 6, and also transports and cools and solidifies the transported object. It can be done at the same time.

As shown in FIG. 9, in the third embodiment of the apparatus of the present invention, SUS316 metal particles are encapsulated in a steel capsule for general structural use, and then sintered by isostatic pressing from the outside of the capsule. The porous inner cylinder 8 made of the cylindrical metal-based porous body 1 produced by the above is inserted into a non-porous outer cylinder 7 made of metal or synthetic resin having an inner diameter larger than the outer diameter thereof, A fluid passage 9 for conveying pressurized air as the fluid 3 is formed between the non-porous outer cylinder 7 and the porous inner cylinder 8, and is conveyed inside the porous inner cylinder 8. Conveyance path 4 for conveying object 10
Is formed, and the pressurized air can be ejected from the outer surface toward the inner surface through the ventilation hole of the porous inner cylinder 8.

The cylindrical porous inner cylinder 8 has a diameter of 8 mm.
0 mm, a thickness of 3 mm, and a two-layer structure in the thickness direction. The porous body 8a facing the inside of the transport path 4 has a thickness of about 1 mm, an average pore diameter of about 10 μm, and a porosity of about 25. %, And the outer porous body 8b has a thickness of about 2%.
mm, an average pore diameter of about 70 μm, and a porosity of about 25%. Such a two-layer structure is formed by making the average particle diameter of the SUS316 metal particles of the outer layer larger than that of the inner layer, contrary to the roller of the first embodiment. Further, the air holes of the inner porous body 8a function as nozzles that allow the pressurized air to pass therethrough and jet to the inner side, and the outer porous body 8b has a large particle size and a large mechanical strength, and It functions as a support structure for the inner porous body 8a. Further, since pressurized air is used as the fluid 3, the average pore diameter of the inner porous body 8a is set smaller than that of the first or second embodiment.

The transported object 10 according to the third embodiment is
As an example, there are moisture-containing powdery granules, sticky fluids, and the like that easily adhere to the inner wall of the pipe if conveyed inside the pipe as it is.

When the porous inner cylinder 8 is installed horizontally, the porous inner cylinder 8 and the non-porous outer cylinder 7 are formed such that the axis of the porous inner cylinder 8 is the non-porous inner cylinder. It is inserted in an offset state displaced upward from the axis of the quality outer cylinder 7. That is, the pressure of the pressurized air jetted into the porous inner cylinder 8 is increased toward the lower surface. This is because there is a high possibility that the conveyed object 10 is conveyed exclusively in the lower part in the conveying path 4. The offset amount of the shaft center may be appropriately changed depending on the weight of the transferred object 10. For example, in the case of a very lightweight powder material, the porous inner cylinder 8 and the non-porous outer cylinder 7 may be formed coaxially.

In addition to the pressurized air, the fluid 3 may be pressurized superheated steam depending on the transported object 10. When the transported object 10 is a granular material containing moisture, the drying process can be performed simultaneously during the transport.

Next, another embodiment of the present invention will be described. <1> In each of the above embodiments, the metallic porous body 1
Reference numeral 8 denotes a porous sintered body using SUS316 metal particles as a sintering material, but the porous body may not necessarily be a metal-based one but a ceramic-based one. Furthermore, a porous body produced by a production method other than the sintering method may be used.

<2> In each of the above embodiments, the metal-based porous bodies 1 and 8 have a two-layer structure in the thickness direction, but may have a single-layer structure or three or more layers. A multilayer structure may be used.

<3> The dimensions, average pore diameter, and porosity of each part of the metal-based porous bodies 1 and 8 in each of the above embodiments can be appropriately changed according to the properties of the article 10 to be conveyed.

Incidentally, reference numerals are written in each claim of the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the description.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a transport device according to the present invention.

FIG. 2 is a vertical sectional view parallel to a transport direction showing a first embodiment of the transport device according to the present invention;

FIG. 3 is a vertical sectional view showing a first embodiment of the transport device according to the present invention, which is perpendicular to the transport direction.

FIG. 4 is a vertical sectional view parallel to the transport direction showing a modification of the first embodiment of the transport device according to the present invention;

FIG. 5 is a vertical sectional view orthogonal to the transport direction showing a modification of the transport apparatus according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram illustrating a surface cutting state of a porous body of the transport device according to the present invention.

FIG. 7 is a perspective view showing a second embodiment of the transport device according to the present invention.

FIG. 8 is a vertical sectional view parallel to a transport direction showing a second embodiment of the transport device according to the present invention.

FIG. 9 is a cross-sectional view showing a third embodiment of the transport device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a, 1b Porous body 2 Roller 2a Hollow part 2b Outside 2c Side plate 3 Fluid 4 Conveyance path 5 Ceiling plate 6 Carrier plate 6a Lower surface side 6b Upper surface side 7 Non-porous outer cylinder 8 Porous inner cylinder 9 Fluid passage 10 Conveyed object

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Takahiro Kitagawa 1-1-1 Nakamiya Oike, Hirakata City, Osaka Prefecture Inside Kubota Hirakata Factory Co., Ltd.

Claims (6)

[Claims] 1. A plurality of rollers (2) formed of a cylindrical porous body (1) capable of seeping out or ejecting a fluid (3) from a hollow portion (2a) to an outer side (2b). A transport device comprising a transport path (4) formed on the upper surface of a plurality of rollers (2). 2. A ceiling plate (5) made of a porous body (1) capable of exuding or ejecting a fluid (3) from an upper surface side to a lower surface side on a part or all of the upper side of the transport path (4). 2. The transport device according to claim 1, further comprising: 3. A plurality of rollers (2) comprising a cylindrical porous body (1) capable of seeping out or jetting out a fluid (3) from a hollow portion (2a) toward an outer side (2b). A transport device in which a transport path (4) is formed on the upper surface side of the plurality of rollers (2), or the lower surface side (6a) to the upper surface side (6b)
A carrier plate (6) made of a porous body (1) capable of seeping out or ejecting the fluid (3) toward the carrier plate;
A transport device comprising a transport path (4) formed on the upper surface side (6b) of the porous body (1), wherein the fluid (3) of the porous body (1) is extruded or ejected in the direction of the porous body (1). A transport device that is aligned at a fixed angle to the surface. 4. A transport plate (6) made of a porous body (1) capable of exuding or jetting a fluid (3) from a lower surface side (6a) toward an upper surface side (6b) is provided. )
A transport device comprising a transport path (4) formed on the upper surface side (6b) of the porous body (1), wherein a pore diameter and / or a porosity of the porous body (1) is adjusted within a surface of the porous body (1). The transport device that has been changed. 5. A cylindrical porous inner cylinder (8) is inserted into a cylindrical nonporous outer cylinder (7), and said nonporous outer cylinder (7) is inserted.
And a fluid passage (9) between the porous inner cylindrical body (8) and a transport path (4) inside the porous inner cylindrical body (8). 8) A transfer device configured to be able to exude or eject the fluid from the outer surface to the inner surface. 6. A carrier plate (6) made of a porous body (1) capable of seeping or ejecting a fluid (3) from a lower surface (6a) toward an upper surface (6b). )
The transfer device according to claim 1, wherein the transfer path (4) is formed on the upper surface side (6b), or the transfer device according to claim 1, 2, 3, 4, or 5. 8) is a porous sintered body having a multilayer structure in the thickness direction, wherein the particle size of the sintered material of the porous sintered body is such that the surface layer (1) facing the transport path (4) side.
a) a conveying device characterized in that the particle size of (8a) is smaller than the particle size of the other layers.