JPH08173838A - Method and device for separating membrane from egg shell - Google Patents

Abstract

PURPOSE: To obtain a high-quality product by efficiently separating the shell and membrane of an egg and heating, sterilizing and crushing the shell with high efficiency. CONSTITUTION: The shell and membrane of an egg are separated by this device. The device is provided with a crusher 3 to crush the egg shell having its membrane in a carrier water current and a liq. cyclone 9 for receiving the crushed shell and membrane along with the carrier water and separating the shell and membrane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for separating eggshell membranes from eggshell membranes.

[0002]

2. Description of the Related Art The egg shell after collecting egg yolk egg white remains with the eggshell membrane attached to the inner surface of the eggshell. The eggshell membrane is separated from this eggshell and the eggshell is used as a calcium source, and the eggshell membrane is burned. It is being used as a therapeutic agent for other trauma and skin diseases.

The applicant of the present invention has previously proposed Japanese Patent Publication No. 4-42942 as a technical means for automatically separating the eggshell and the eggshell membrane from the one which has conventionally relied on manual labor.
The present invention provides a method and a device for collecting eggshell membranes, which enables continuous treatment, whereas conventional automatic treatment could be performed only by a batch method, and separation treatment between eggshell and eggshell membranes. Can be done with high efficiency.

[0004]

However, in the technique disclosed in the above publication, the eggshell is naturally precipitated by the difference in specific gravity between the crushed eggshell and the eggshell membrane, and the eggshell membrane is levitated and sieved. It was not possible to efficiently carry out a consistent treatment because the eggshell and the eggshell membranes that had been hung up and separated had to be separately taken out and post-treated separately.

[0005]

In view of this, the present invention increases the separability of the eggshell membrane from the eggshell membrane, enables highly efficient separation, and consistently treats the eggshell after the separation and recovers the eggshell membrane. Another object of the present invention is to provide a method and apparatus for separating an eggshell and an eggshell membrane that can be carried out in accordance with the above, and another object of the present invention is to further improve the separability of the eggshell and the eggshell membrane in a water stream for transportation. The object of the present invention is to provide a device equipped with a liquid cyclone and a tank that can be enhanced, and to further efficiently heat-sterilize powder and granules such as eggshell while eliminating the need for storage in a heat storage in a later step. A method for producing a sterilized powder and granules, and a heating and sterilization apparatus for the powder and granules, which is an apparatus for separating an eggshell and an eggshell membrane, and a crusher for crushing an eggshell with an eggshell membrane in a water stream for transportation. And crushed eggshell and eggshell membrane An apparatus for separating an egg shell and an eggshell membrane, comprising a liquid cyclone that receives together with water for transport and uses the difference in specific gravity between the two to separate the egg shell and the eggshell membrane. Claim 2 is characterized in that an egg shell separated by the cyclone is received on the downstream side together with water for transportation, and an egg shell membrane adhering to or remaining alone in the egg shell is separated by a difference in specific gravity between the two, thereby providing a separation tank.

[0006] Claims 3 and 4 are characterized by the construction of a separation tank, claims 5, 6 and 7 are directed to a method for producing powder and granules, and claim 8 is to provide a heating and sterilizing apparatus for powder and granules. .

The liquid cyclone referred to herein is a device for injecting a liquid such as water to generate a swirling flow, and applying a centrifugal force to the different phase molecules contained in the liquid to separate and capture them from the liquid.

[0008] Therefore, the egg shell after breaking the egg and collecting the egg yolk and the egg white is crushed in the wet pulverizer while being conveyed by the conveying water into the required size (2 to 3 mm) suitable for the post-treatment. At this time, most of them are separated and mixed into the eggshell and the eggshell membrane. The crushed eggshell and eggshell membrane are supplied to a hydrocyclone together with water for transportation,
Due to the swirling flow generated in this cyclone, the eggshell and the eggshell membrane are separated, the eggshell membrane with a small specific gravity gathers in the periphery and floats upward, is discharged from the upper part of the liquid cyclone, and the eggshell gathers in the center and is separated, Only the eggshell is discharged from below the hydrocyclone. Therefore, from the crushing of the eggshell to the separation of the eggshell membrane from the eggshell is carried out according to a consistent flow of the transport water, which is processed continuously and simultaneously crushed and separated quickly.

When a separation tank is provided subsequent to the liquid cyclone, even if the eggshell membrane remains attached to the eggshell or the eggshell membrane floats in the transport water, the lower end of the separation tank is in a dip. Separation is promoted by the rising water flow in the tank generated by the water supplied from the water supply device, the eggshell membrane floats upward and is discharged from the upper part of the tank, and the eggshell is discharged from the lower part. At this time, the egg shell is washed by the downward water flow generated by stirring by the stirring blade in addition to the stirring by the rising water flow, so that there is no hindrance to the subsequent commercialization.

In the heat sterilization device for powder and granules, in the case of eggshell,
The eggshells washed as described above are received on a perforated plate, and heat sterilized by steam supplied toward the perforated plate.
The egg shells on these perforated plates are gradually carried out by the carrier, and the egg shells that have been sterilized by heating are continuously supplied as sterile from the end of the carrier toward the subsequent commercialization.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a flow chart showing an outline of a method for separating an egg shell from an eggshell membrane (hereinafter simply referred to as a shell and a membrane) and an apparatus according to the present invention. The steps flow from left to right in the figure.

In the figure, reference numeral 1 is a centrifuge,
After breaking the egg, the egg yolk that collects the egg yolk egg white after receiving the film is separated and the adhering egg liquid is separated and discharged onto the conveyor 2 in a timely manner, and the wet crusher 3 (trigonal) is discharged from the end of the conveyor 2. The shell with a film is supplied into the hopper 4.

The wet crusher 3 is designed to receive water (W) into the hopper 4 at the same time as the shell, and the shell is conveyed together with this water by the screw 6 and has a side of about 2 to 3 mm in water. It is designed to be crushed to size.

A pump 7 is provided on the outlet side of the wet crusher 3, and the shell with a film crushed by the pump 7 is carried out together with water through a pipe line 8, which is a liquid. It is tangentially connected to one side of the upper part of the cyclone 9.

As shown in the sectional view of FIG. 2, the liquid cyclone 9 is connected to a pipe line 10 for discharging a film at the upper part thereof, and has a lower concavity at the lower part thereof, and a discharge port 11 at the lower end thereof.
Communicates with the upper portion of the separation tank 12. The shell and the membrane flow into the liquid cyclone 9 together with the carrier water,
A shell gathers in the center while descending by generating a swirling flow inside,
As the membranes gather around the membrane, they are separated from each other, the membrane having a small specific gravity rises and is collected together with water through the pipe line 10, and the shell flows into the separation tank 12 through the outlet port 11 at the lower end together with the water. It

The separating tank 12 has a cylindrical upper portion and a lower recessed portion, as shown in a partial cross section in FIG. 3, and has a cylindrical body 13 connected to the lower portion. A cross-shaped baffle plate fixing member 14 is provided at an upper position of the cylindrical body 13, and a funnel-shaped baffle plate 15 is attached to the fixing member 14. The lower end of the baffle plate 15 is a nozzle-shaped opening 16 that is narrowed down to about 10φ and is opened into the cylindrical body 13. From the side of the cylindrical body 13, a cleaning water supply pipe 17 is provided. The inner end of the supply pipe 17 is inserted and fixed in the baffle plate 15
Is opened downward at a position near the opening 16. The motor 1 is provided at the center position in the separation tank 12.
A stirring shaft 19 rotated by 8 is provided vertically, a stirring blade 20 is provided at the lower end of the stirring shaft 19, and an overflow weir plate 21 is provided in an upper portion of the separation tank 12 to overflow the floated film. It is designed to be discharged through the conduit 22.

The shell separated in the liquid cyclone 9 flows into the tank 12 together with the carrier water,
Water flow supplied from the cleaning water supply pipe 17 and the stirring blade 20
A convective flow occurs in the tank 12 as indicated by the arrow due to the amount of water rotated, and the membrane gradually floats above the water surface due to the difference in specific gravity, and the shell is discharged downward from the opening 16 of the baffle plate 15.

The carrier water and shells discharged from the tank 12 are supplied to a cleaning tank 25 pumped in a pipe line 23.

The cleaning tank 25 has a motor 26 inside.
A stirring shaft 27 that is driven to rotate is vertically installed. The stirring blades 28 of the stirring shaft 27 stir water containing shells to wash the shells.

The carrier water discharged from the lower end of the washing tank 25 and the washed shell are pumped up by the pump 30 in the conduit 29 and guided to the dehydrator 31. A normal centrifugal dehydrator is used for the dehydrator 31, and the shell is dehydrated to such an extent that the shell contains about 7% of water.

The shells dehydrated by the dehydrator 31 are discharged onto the conveyor 32 and supplied to the heat sterilizer 33 through the conveyor 32.

This heat sterilizer 33 has a substantially rectangular parallelepiped outer shape with an open upper portion as shown in FIG. 4 for the entire cross section, FIG. 5 for the perspective view of the main portion, and FIG. 6 for schematically showing the cross section. Case 34
In the outer casing 34, the perforated plate 3 is provided so as to incline upward from the longitudinal center to both side walls 34a, 34a.
5, 35 are provided. The perforated plates 35, 35 are
A fine mesh such that the shell does not fall from the hole is used, such as one in which small holes are arranged in a punching metal shape, one in which a slit-like hole is formed, or the like.

At the valley where the perforated plates 35, 35 intersect, a carrier 36 having spiral carrier blades is rotatably driven through a transmission mechanism 41 by a motor 40 installed outside the outer casing 34. . On the upper part between the perforated plates 35, a bridge breaking arm 37 is provided with a transmission mechanism 38.
It is provided so as to be drivenly rotated by the carrier 36. Further, a steam supply pipe 42 is arranged in an upper position between the perforated plates 35, 35 in parallel with the carrier 36 to blow steam toward the perforated plates 35, 35. A steam supply pipe 43 is connected to one side of the outer casing 34 below the perforated plates 35, 35 so that steam is applied from the lower side of the perforated plates 35, 35. The supply source of these vapors is the temperature sensor 4 installed at a proper position in the outer casing 34.
The supply of steam is controlled on the basis of the detected value of 4, and the temperature is controlled. In addition, 45, 45 ... Shows a level sensor.

Following the heat sterilizer 33, a shell firing machine 46
Is arranged. The shell baking machine 46 includes a hopper 47 for receiving the shells dried by the heat sterilizer 33 and discharged from the end of the carrier 36, and a spiral carrier blade for carrying the shells charged into the hopper 47. It comprises a carrier 48 that it has, and a gas burner 50 that heats from the bottom of a container 49 that houses this carrier 48, and the container 49 at the end of the carrier 48 is connected to a crusher 52 by a pipe line 51. .

In the crusher 52, for example, as shown in a schematic cross section in FIG. 7, the pipe 51 is connected to one lower side and hot air (300 ° C. or more) is blown from the lower surface side.
A motor, which is provided near the bottom of the case 53, is rotatable by a motor (not shown).
3, a grinding disk 54 facing the liner 53a on the lower inner periphery of the No. 3 and a vessel-shaped guide ring 5 having a plurality of holes 55a provided at the upper position of the grinding disk 54.
5 and a separator 57 located in the upper part of the case 53 and rotatably driven by a motor 56 and formed of a metal filter of about 400 mesh.

When baked by the shell baking machine 46, a small amount of burnt odor may remain due to burning of the protein adhering to the egg shell powder, which may not be preferable depending on the application. When it is necessary to avoid the generation of this smell, the shell baking machine 46 is omitted and the heat sterilizer 33 is directly connected to the crusher 52. In this case, the hot air blown into the crusher 52 is dried at a temperature of 100 to 130 ° C. so that no burning odor is generated.

In the case 53 of the crusher 52, as shown by an arrow in FIG. 7, the temperature (300 ° C. or 100 to 130) is set.
Hot air of (° C.) is blown into the case 53 through the back side of the gliding disk 54, and the egg shell powder crushed by the sliding of the gliding disk 54 and the liner 53a is blown upward in the case 53.
This egg shell powder is a separator 57 made of a metal filter.
The coarse powder is removed by the separator 57, passes through the holes 55a at the corners of the guide ring 55, and is again subjected to the above-mentioned action to be ground.

Above the case 53, the separator 57 is provided.
A pipe 59 for discharging shells of a predetermined size (about 3 μm to 4 μm) or smaller separated by is connected, and a packaging bag is provided through this pipe 59 and a cloth filter (not shown) provided at the end of the pipe 59. Etc. are supplied as a product to the container 60.

In FIG. 1, reference numeral 10 denotes a pipe for collecting the membrane separated by the hydrocyclone 9, but the water for transportation from the hydrocyclone 9 passes through the pipe 10 and a membrane separation filter (not shown). It is recovered in the recovery tank 61, pumped by the pump 62, and reused as cleaning water for the separation tank 12. Further, the water overflowed in the separation tank 12 is collected in the receiving tank 64 through the pipe 63,
The overflowed water is supplied to the recovery tank 61, and the other water is pumped by a pump 65 and supplied to the wet crusher 3 through a pipe 66 as transport water.

Next, an outline of the entire flow will be described with reference to FIG. The membrane-coated shell, which has been egg-broken by the egg-breaking machine and the egg yolk and egg white have been collected, is put into the centrifuge 1 to remove water such as egg liquid adhering to the shell and the membrane, and then through the conveyor 2. It is supplied into the hopper 4 of the wet crusher 3.

Water for transportation (W) is supplied to the wet crusher 4, and while the shells are carried along with the water stream, the shell is crushed in water to a size of about 2 to 3 mm and reaches the end. A shell and a membrane are supplied to a hydrocyclone 9 through a pipe line 8 together with water for transportation which is pumped up by a pump 7.

The carrier water flowing into the hydrocyclone 9 from the tangential direction and the shells and membranes contained therein flow as a swirl flow along the inner peripheral surface of the hydrocyclone 9 and have a small specific gravity (a membrane in a wet state). Has a specific gravity of about 1) and gradually rises upward, and shells with a specific gravity greater than that of the film (the specific gravity of a wet shell is about 2) are concentrated in the center and settle down. To do. The membrane separated in this way is recovered through the conduit 10 at the upper end of the hydrocyclone 9, and the shell flows out from the lower end of the hydrocyclone 9 into the separation tank 12 together with the transport water.

Conveying water and mainly shells contained in the separation tank 12 remain in the tank 12 due to a convective flow as indicated by an arrow in FIG. 3 due to the pressurized water supplied from the cleaning water supply pipe 17. The membrane floats upward due to the difference in specific gravity, overflows from the weir 21, and is discharged. The shell is washed and discharged downward from the opening 16 at the lower end of the baffle plate 15.

The transport water discharged from the separation tank 12 and mainly shells are pumped up by the pump 24 and supplied to the cleaning tank 25 through the conduit 23 together with the cleaning water.

In this cleaning tank 25, the shells are agitated by the stirring blades 28, 28, and the final cleaning of the shells is carried out, and the water and shells coming out from the lower part are guided to the dehydrator 31, where the water content is 10% or less (practically. Is about 7%). The dehydrated shells are guided to the heat sterilizer 33 through the conveyor 32 and supplied onto the perforated plates 35, 35. In this heat sterilizer 33, the perforated plate 35, through the steam supply pipes 42, 43,
35 is sprayed with steam, and the shells on the perforated plates 35, 35 are heat-sterilized by steam for 3 minutes at about 100 ° C. The heat-sterilized shell is sequentially discharged from its end by the carrier 36, supplied to the hopper 47 of the shell calciner 46, and calcined by the heat of the gas burner 50 while being carried by the carrier 48 of the shell calciner 46, The fired shells coming out from the end are supplied to the pulverizer 52 and pulverized into a fine powder of about 3 to 5 μ, and the pulverized shells are appropriately filled in a container 60 such as a bag and shipped.

When the shell-baking machine 46 is omitted, the heat-sterilizing machine 33 sends the shell-baking machine directly to the crusher 52, and the temperature is 100 to 130 ° C.
It is dried by hot air.

The separation tank 12 to the cleaning tank 2
If a liquid cyclone is provided also in the pipe line 23 for supplying to the pipe 5, the separability between the shell and the membrane can be further enhanced.

[0038]

As described above, according to the present invention, since the egg shell to be supplied is crushed in water, the shell and the membrane can be satisfactorily separated at the same time as the crushing to a required size is achieved. It facilitates the separation of the shell and the membrane and contributes to the extraction of only the shell with high yield. Also, the crushed shell and the membrane are supplied to a hydrocyclone together with water for transport, and the swirl flow generated in this cyclone separates the shell and the membrane having different specific gravities. Since they are discharged together with the transport water from below, a continuous separation action can be performed, and the separation of both can be performed with high efficiency.

Further, since the separation tank has a structure of a lower constriction, and a baffle plate is provided at the lower part of the separation tank and the end of the washing water supply pipe is provided so as to face the opening of the baffle plate, it is generated by this washing water. The convective water flow causes the shell and the membrane to circulate in the vertical direction, where the membrane with a smaller specific gravity gradually rises and is separated upward, and the shell with a larger specific gravity descends and is separated. The nature is enhanced.

Further, in the heat sterilization apparatus for powder and granules, the powder and granules in a wet state, which are supplied onto the slanted perforated plate in the outer casing, are heat-sterilized by spraying steam from above and below, so that the powder and granules in a dry state are The heat transfer to the entire powder and granules is improved compared to the case of heating, and heat sterilization can be performed uniformly in a short time. As a result, when the egg shell powder is formed into a bag product in a subsequent step, it is possible to store the egg shell powder at room temperature without the need for storage in a heat storage for sterilization that is generally performed.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a flow of an embodiment of the present invention.

FIG. 2 is a sectional view showing an example of the cyclone in FIG.

FIG. 3 is a perspective view, partly in section, showing an example of the separation tank in FIG.

FIG. 4 is a schematic cross-sectional view showing an example of the heating dryer in FIG.

FIG. 5 is a perspective view of the main part of the same.

FIG. 6 is a schematic sectional view of the same.

FIG. 7 is a sectional view showing an example of the crusher.

[Explanation of symbols]

 1 Centrifuge 3 Wet Crusher 7 Pump 9 Liquid Cyclone 12 Separation Tank 15 Baffle Plate 17 Wash Water Supply Pipe 19 Stirring Shaft 21 Weir Plate 24 Pump 25 Washing Tank 27 Stirring Shaft 30 Pump 31 Dehydrator 33 Heat Sterilizer 35 Porous Plate 42,43 Steam supply pipe 46 Shell firing machine 50 Gas burner 52 Crusher 57 Separator

Claims (8)

[Claims] 1. A device for separating an eggshell and an eggshell membrane, comprising:
A crushing device for crushing an eggshell with an eggshell membrane in a stream of transport water, a liquid cyclone that receives the crushed eggshell and the eggshell membrane together with the transport water, and separates the eggshell and the eggshell membrane using the difference in specific gravity between the two. An apparatus for separating an eggshell and an eggshell membrane, comprising: 2. A separation tank is provided on the downstream side of the liquid cyclone, which receives the eggshell separated by the cyclone together with water for transportation and separates the eggshell membrane adhered to the eggshell or left alone to separate the eggshell membrane based on the difference in specific gravity between the two. Item 2. A device for separating an eggshell and an eggshell membrane according to Item 1. 3. An apparatus for receiving mainly an egg shell after breaking eggs together with water for transportation and separating an egg shell membrane that remains adhered to the egg shell or is mixed alone by the difference in specific gravity between the eggshells, the lower end of which is a recessed shape. A cylindrical tank that forms a water tank is provided below the tank, and a stirring blade that creates a water flow in the water inside the tank is rotatably provided, and a water supply device that creates a rising water flow in the tank is provided at the bottom of the tank. A washing / separating device for an eggshell and an eggshell membrane characterized by being provided. 4. The apparatus for washing and separating eggshells and eggshell membranes according to claim 3, wherein the water supplier is a pressurized water supplier containing air. 5. Eggshell powder and granules containing 5 to 9% of water are sterilized by steam heating and then 100 to 1 while finely pulverizing the eggshell.
A method for producing a sterilized powder or granule, comprising a step of drying with hot air at 30 ° C. 6. A method for producing a sterilized powder or granule, which comprises the steps of steam-sterilizing an egg shell powder or granule containing 5 to 9% of water and then heat-drying. 7. The method for producing a sterilized powder or granule according to claim 6, comprising a step of finely crushing the eggshell after the thermal drying. 8. An outer casing which is a substantially rectangular parallelepiped for receiving egg shell powder and granules, and a perforated plate on which the egg shell powder and granules are mounted and which is arranged in an upward slope from the center in the longitudinal direction to both side walls. A spiral carrier arranged along the intersection of the perforated plates, steam supply means for supplying steam from the upper and lower parts of the perforated plate toward the perforated plate, and the carrier is rotationally driven. A heating and sterilizing apparatus for powdery or granular material, comprising: a driving device.