JPH11100009A - Carrying method and device for sterilizing treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sterilizing treatment carrying device for uniformizing the emission distance and the electron beam absorbed dose for respective sections of a matter to be emitted without the high output of electron beam. SOLUTION: A sterilizing treatment carrying device 23 as a prerequisite is provided with a carrying section 31 passing through an emission area of sterilizing electron beam 27, and used for passing through a cylindrical container (a matter to be emitted) 40 revolved around the axial line. The carrying section 31 is provided with a pair of rotation supporting shafts 35 and 36 rotated in the carrying direction and a carrying blade 37. Both supporting shafts 35 and 36 are disposed in parallel each other, and the container 40 is supported in the state of being laid down sideways between the supporting shafts so that the axial line of the container conforms to the carrying direction. The carrying blade 31 is wound in the spiral shape by the pitch longer than the length of the container 40 on the outer periphery of either one of the support shafts 35 or 36. The container 40 in the state of being laid down sideways is carried to the emission area while being rotated around its axial line to carry out the sterilizing treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam-shaped X
By irradiating the irradiated object with radiation such as rays, that is, an electron beam for sterilization, the germ adhered to the irradiated object is killed and sterilized (sterilized). The present invention relates to a method and an apparatus for a sterilization treatment transport method for transporting an electron beam to an electron beam irradiation area.

[0002]

2. Description of the Related Art In recent years, there has been a trend toward the practical use of a sterilization process in which a food packaging material such as a bottle before food filling is sterilized by irradiating the food packaging material with a spot-like or linear electron beam. is there.

FIG. 7 is a vertical sectional side view schematically showing a configuration of a conventional sterilization apparatus proposed for the sterilization processing. There are two types of electron beam irradiation methods: a scanning irradiation method in which the generated spot beam is swept by a scanning magnet and a linear irradiation method in which the generated linear beam is directly irradiated. FIG. 7 shows an example in which the linear irradiation method is adopted as a representative example because there is no significant difference in the configuration regardless of which method is adopted.

[0004] In Fig. 7, reference numeral 1 denotes an electron beam generator, the inside of which is held in a vacuum by a vacuum evacuation device (not shown). The electron gun unit 2 generates a linear electron beam 3 (see the crossing area of the oblique line indicated by the two-dot chain line). Generated electron beam 3
Are emitted into the atmosphere through a thin-film extraction window 4 having a closed lower end opening of the electron beam generator 1.

[0005] Below the electron beam generator 1, there is disposed a conventional sterilizing treatment transporting device 5. This device 5 is provided with a conveyor belt conveyor 6 arranged horizontally.
And a drive unit 7 including a motor for driving the conveyor 6 and a speed adjuster 8 for controlling the motor to adjust the traveling speed of the conveyor 6.
The conveyor belt conveyor 6 is arranged so as to pass through an irradiation area of the electron beam 3 emitted from the electron beam generator 1. The transport device 5 is configured to place a cylindrical container 9 such as a bottle as an object to be irradiated on the conveyor 6 in an upright position and to continuously pass the object through the irradiation area.

The cylindrical container 9 conveyed in this manner is exposed to the electron beam 3 emitted from the electron beam generator 1 in the irradiation area, and accordingly, the cylindrical container 9 is irradiated in accordance with the absorbed dose of the irradiated electron beam 3. The germs attached to the surface of No. 3 can be killed.

[0007] The electron beam absorbed dose is determined by the electron beam 3
Energy, beam current, irradiation distance from the electron gun unit 2 to each part of the cylindrical container 9, and irradiation time. Therefore, in the sterilization treatment apparatus of the above configuration,
In order to provide the necessary electron beam absorption dose according to the purpose, the specifications of the electron beam generator 1 are determined, and the transfer speed of the cylindrical container 9 by the transfer belt conveyor 6 is adjusted via the speed adjuster 8. Is done.

[0008]

The cylindrical container 9 as an object to be irradiated can roll because of its form.
The electron beam 3 is transferred by the conveyor belt conveyor 6 arranged horizontally.
Must be placed in an upright position so that it can be stably placed on the conveyor 6, and therefore must be placed vertically as shown in FIG. ing.

With such a vertical posture, the difference in irradiation distance from the electron gun 2 of the electron beam generator 1 to the upper and lower portions (bottom) of the cylindrical container 9 increases. Therefore, there is a difference in the electron beam absorption dose at the upper and lower portions of the cylindrical container 9, and the electron beam absorption dose at the lower portion of the cylindrical container 9 is reduced. There is a problem that it is difficult to uniformly irradiate the entire area with the electron beam 3.

One solution to this problem is to:
The output of the electron beam 3 emitted from the electron beam generator 1 may be increased. However, in order to increase the output of the electron beam generator 1, there is a problem that enormous equipment costs are required and the device 1 becomes large.

Accordingly, a first object of the present invention is to provide a sterilization process capable of equalizing the irradiation distance and the electron beam absorbed dose for each part of the irradiation object without increasing the output of the electron beam. An object of the present invention is to provide a transport method and apparatus.

A second object of the present invention is to solve the above-mentioned first problem by providing a transfer device for sterilization treatment capable of preventing an increase in the temperature of a transfer section caused by electron beam irradiation. To get.

[0013]

According to the first aspect of the present invention, there is provided a method of:
It is premised on a transfer method for sterilization treatment for transferring an object to be rolled about an axis to an electron beam irradiation region irradiated with an electron beam for sterilization to perform electron beam sterilization. Then, in order to solve the first problem, the method of the present invention is to rotate the object to be irradiated in a sideways posture in which an axis of the object intersects with an irradiation direction of the electron beam, and while rotating the object around the axis. , Through the electron beam irradiation area.

According to a second aspect of the present invention, there is provided an apparatus having a transport section passing through an electron beam irradiation area irradiated with an electron beam for sterilization and a drive section for driving the transport section, and rolls about an axis. It is assumed that a transfer device for sterilization processing transfers the obtained irradiation object to the electron beam irradiation region. In order to solve the first problem, in the apparatus of the present invention, the transport units are arranged in parallel with each other, and the transported object is placed between the transport units in an overturned posture whose axis coincides with the transport direction. A pair of rotary support shafts to lay down and support, comprising a transport blade spirally provided on the outer periphery of one of the two rotary support shafts at a pitch greater than the length of the irradiation object, Further, the drive unit rotates the two rotation support shafts in the same direction.

In order to solve the second problem, the invention according to claim 3 is dependent on the invention according to claim 1, wherein each of the pair of rotary support shafts is a hollow shaft, and a cooling medium is provided therein. Are distributed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a vertical cross-sectional side view schematically showing a configuration of a sterilization processing apparatus including a transfer device for sterilization processing according to the first embodiment, and as shown in FIG. A beam generating device 22 and a transport device 23 are provided. Most portions of the transfer device 23 are housed in the transfer device chamber 24, and the transfer device room 24 houses an electron beam stopper 30.

The transfer device chamber 24 is formed by combining an electron beam shielding wall made of lead or the like, and the inside thereof is kept clean by a clean air supply device (not shown) as necessary. . A rectangular opening 25 extending in the longitudinal direction of the transfer device chamber 24 is formed in a ceiling wall 24 a of the transfer device chamber 24. Ceiling wall 2
An electron beam generator 22 is mounted on the upper surface of 4a.

The generator 22 has a generator chamber 26 formed of an electron beam shielding wall made of lead or the like, and houses an electron gun 28 for generating an electron beam 27 therein. The lower surface opening of the generator chamber 26 is closed by a take-out window 29 made of a thin film, and the inside of the generator chamber 26 is kept in a vacuum by a vacuum exhaust device (not shown). The extraction window 29 through which the electron beam 27 can pass has a shape corresponding to the opening 25. The generator chamber 26 is connected to the outer surface of the ceiling wall 24a of the transport apparatus chamber 24 with its take-out window 29 aligned with the opening 25.

The electron gun section 28 generates an electron beam 27 made of radiation and emits it downward. Thereby, for example, as shown in FIG. 3 and FIG. 4, the linear electron beam 2 having a rectangular
7 is emitted and radiated into the transfer device chamber 24 through the extraction window 29 and the opening 25. In each of the figures, the linear electron beam generator 22 that directly irradiates the electron beam generated linearly as described above is illustrated.
Instead, a scanning electron beam generator that generates a spot-shaped electron beam and sweeps and irradiates it with a scanning magnet may be employed. The electron beam stopper 30
Is made of an electron beam absorbing material, is formed larger and thicker than the cross-sectional shape of the electron beam 27, and is applied to a predetermined area in the transfer device chamber 24. The electron beam 27 is received and absorbed.

Next, a description will be given of a transfer device 23 for performing the transfer method according to the first embodiment. This device 23
As shown in FIG. 1 and FIG. 2 and the like, a transport unit 31, a drive unit 32, an article supply unit 33, and an article discharge unit 34 are provided.

As shown in FIGS.
Are, for example, a pair of rotation support shafts 35, 36 forming a double shaft structure of an inner shaft and an outer shaft fitted thereto, and a transport blade 37 provided on one of the support shafts, for example, the rotation support shaft 35. The discharge portion side portion is disposed close to the ceiling wall 24a so as to approach the opening 25 as much as possible. Both rotation support shafts 35 and 36 are provided with the electron beam 2.
7 are arranged in the transfer device chamber 24 so as to extend in the longitudinal direction of the transfer device chamber 24, and both ends of the transfer device chamber 24 are provided at bearings 38 and 39 disposed at both ends in the longitudinal direction of the transfer device chamber 24, respectively. Each is rotatably supported.

The rotation support shafts 35 and 36 have the same outer shape and are arranged parallel to each other and, for example, horizontally (although they may be slightly oblique). In addition, the two rotation support shafts 35 and 36 are provided between the cylindrical container 4 and the conveyed object.
0 is a posture intersecting the irradiation direction of the electron beam 27,
That is, in the first embodiment, the containers 40 are brought closer to each other with an interval smaller than the maximum diameter of the cylindrical containers 40 so that the containers 40 can be laid down and supported in a sideways posture in which the axis coincides with the direction of conveyance. . Transfer blade 3
Reference numeral 7 denotes a ribbon-shaped member which is spirally wound around the outer peripheral surface of the rotation support shaft 35. The spiral pitch L of the blade 37 is set to be longer than the overall length 1 of the cylindrical container 40, as shown in FIG.

The two rotating support shafts 3 arranged as described above
Both ends 35 supported by the bearings 38, 39 of 5, 36
a, 36a (see FIGS. 3, 5, and 6) are processed to have a smaller diameter than the intermediate portion, and these end portions 35a, 36a
Is the maximum diameter D of the cylindrical container 40.
It is set larger than.

As shown in FIGS. 2 and 5, hollow shafts are used for the inner shafts of the rotation support shafts 35 and 36. The two rotation supporting shafts 3 penetrating the bearings 38 and 39
The transfer device chamber 24 is provided at both ends 35a, 36a of the transfer device chambers 5, 36.
3 and 6, the cooling medium connection boxes 41 are connected to each other. In these connection boxes 41, a pair (only one is shown) of L-shaped passages 42 respectively corresponding to the two rotation supporting shafts 35 and 36 are provided, and the end 35a or 36a is rotatable at one end thereof. Sealed and connected.

In this connection, the ends 35a or 36a of the rotary support shafts 35 and 36 are loosely fitted to the one end of the L-shaped passage 42, and the outer periphery of the end 35a or 36a and the inner peripheral surface of the one end are fitted. And the packing 43 is interposed between
The packing 43 is provided by screwing a packing holder 45 having an O-ring 44 for holding the packing 43 to the connection box 41. Then, the L-shaped passage 4 of the cooling medium connection box 41
A cooling medium conduit 46 is connected to the other end of 2.

These conduits 46 are connected to a cooling medium supply unit (not shown) arranged outside the transfer device chamber 24, and guides a cooling medium, for example, cooling water sent from this supply unit, to the inside of the rotation support shafts 35 and 36. And circulation without circulation. It should be noted that cooling air may be used as the cooling medium,
The cooling of 6 may be omitted. In this case, solid rods can be used for both the rotation support shafts 35 and 36, and naturally components for cooling medium distribution such as a cooling medium connection box can be omitted.

As shown in FIG. 1 and FIG.
Is provided, for example, on the bearing 38 side. The drive unit 32 includes a motor 51 and an output shaft 51a of the motor 51.
And a drive chain wheel 52 fixed to the shaft and end portions 35 of the two rotation support shafts 35 and 36 on the bearing 38 side opposed to the wheel chain 52.
a, driven sheaves 53, 54 of the same diameter fixed to a, 36a, respectively.
And an endless chain 55 wound around these chain wheels 52 to 54. Therefore, the motor 5
The rotation power of the first and second rotation support shafts 35, 3,
6 to rotate these two shafts 35 and 36 in the same direction in synchronization. The motor 51 has a bearing 38
The front end of the output shaft 51 a is fixed to the side wall of the transfer device chamber 24 on the side, and the tip end of the output shaft 51 a penetrating this side wall is supported by the bearing 38. The rotation speed of the motor 51, and consequently, the transport speed of the cylindrical container 40 due to the rotation of the rotation support shafts 35 and 36 can be adjusted by a speed adjuster (not shown) that adjusts the rotation speed of the motor 51. The transmission mechanism of the drive unit 32 may employ a transmission mechanism using a gear train instead of the winding type.

The component supply section 33 is provided on the loading end side of the transport section 31, that is, on the bearing 38 side, and has a chute shape. The supply unit 33 continuously loads the cylindrical container 40 before food filling, that is, the irradiation target that can be rotated around its axis, from the upper side between the two rotation support shafts 35 and 36 at the carry-in side end by its own weight. It is provided to supply to. The lower end of the guide 33 a of the supply unit 33 is disposed directly above both the rotation support shafts 35.

Thus, the component supply unit 33 moves the cylindrical container 40 so that the axis is horizontal and the axis extends in the direction of conveyance of the conveyance unit 31, in other words, the axis is In a state where the cylindrical container 40 is laid down in a sideways posture corresponding to the transport direction of the
Supply can be made from above between 5, 36. The cylindrical container 40 is supplied to the component supply unit 33 from the outside of the transfer device chamber 24 as needed.

The component discharge section 34 is provided at the discharge side end of the transfer section 31, that is, on the bearing 39 side, and has a discharge chute 61, a discharge conveyor 62, and a chute support 63. . The carry-out chute 61 is disposed obliquely through a through hole 39a opened in the bearing 39, and its inclined upper end is supported from below by a chute support 63, and an intermediate portion is supported by the bearing 39 with a support 64. Supported through. The inclined upper end of the chute 61 is disposed directly below the inter-axis gap G at the carry-out end. Thereby, the unloading chute 61 receives the cylindrical container 40 falling through the gap G and slides down. The lower end side of the unloading chute 61 penetrates the other side wall of the transfer device chamber 24, and the unloading conveyor 62 is horizontally arranged so as to be connected to the lower end portion. The conveyor 62 employs a belt conveyor or the like. Therefore, the cylindrical container 40 that slides down the unloading chute 61 is delivered to the unloading conveyor 62, and is unloaded to the food filling unit or the like in the next step by the endlessly rotating conveyor belt of the conveyor 62. In FIG. 2, each arrow indicates a supply direction, a transport direction, a carry-out direction, and a rotation direction around the axis of the cylindrical container 40.

The electron beam 27 generated by the electron beam generator 22 in the sterilizing apparatus 21 having the above-described structure is used for the electron beam 27 shown in FIG.
As shown by the two-dot chain line, the transport unit 31 of the transport device 23
Has a rectangular cross section that is elongated in the carrying direction of the
Then, the light passes through the opening 25 to irradiate a predetermined length region of the transfer section 31 in the transfer apparatus chamber 24, and is received and absorbed by the electron beam stopper 30 installed below the transfer section 31.

In such an irradiation state of the electron beam 27, the transport device 23 moves the pair of rotary support shafts 35, 36.
The transfer operation of the cylindrical container 40 is performed in a forced cooling state in which cooling water is passed through the inside. In this case, from the component supply unit 33 at the loading-side end of the two rotation support shafts 35 and 36 of the transport unit 31, a cylindrical container 40 laid down in a sideways posture in which the axis coincides with the transport direction of the transport unit 31. , Is supplied from above between the two rotation support shafts 35 and 36 while maintaining the above posture. Since the cylindrical containers 40 supplied in this manner are successively replenished to the supply position one after another in accordance with the transport operation described below, the transport of the cylindrical containers 40 described below is performed continuously.

In this transfer operation, both the rotation support shafts 35 and 36 of the transfer section 31 are rotated by the drive section 32 at a speed required for the sterilization process, and the supplied cylindrical container 40 is moved to the irradiation area of the electron beam 27. To be transported.

That is, the cylindrical container 40 supplied between the rotary support shafts 35 and 36 has its outer peripheral surface in contact with the peripheral surfaces of the adjacent rotary support shafts 35 and 36, and the two rotary support shafts 35 and 36. 5, the two rotation support shafts 35, 3 which are rotated in the same direction by driving as shown in FIG.
A rotation opposite to that of 6 is given. in this case,
The cylindrical container 40 is in a sideways posture, and its rotation is performed around the axis, and a rotational force is applied from two places instead of one place while suppressing the radial movement of the cylindrical vessel 40. In addition, the container 40 can be surely rotated around the axis without causing slippage between the container 40 and the cylindrical container 40. At the same time, the spiral conveying blade 37 that rotates integrally with the rotation support shaft 35 comes into contact with the rear end of the cylindrical container 40 in the laterally inclined posture on the bearing 38 side, and the container 40 moves in the bearing 39 direction. Give thrust. Therefore, the cylindrical container 40 is rotated about its axis while rotating the support shafts 3 of the transport unit 31 in accordance with the direction of the thrust.
Slide on 5, 36. The transfer blade 3
Since the thrust is given to the cylindrical container 40 by 7 and transported,
Even if the transport path 31 is inclined, the container 40 can be transported as described above without any trouble.

The cylindrical container 40 supplied from the component supply unit 33 in this manner is driven by the drive unit 32 and synchronously rotated at the adjusted speed in the same direction and a pair of rotation support shafts 35 and 36. It is delivered so as to straddle it, and is conveyed toward the bearing 39 by the axial thrust given by the conveying blade 37 while being rotated around its own axis.

With the completion of the transfer in the transfer section 31, the large-diameter portions of the two rotary support shafts 35 and 36 are separated from the cylindrical container 40, and at the same time, the supporting force of the container 40 from the lower peripheral surface disappears. Therefore, the cylindrical container 40 falls through the gap G between the shafts on the bearing 39 side, slides down the unloading chute 61, is delivered to the unloading conveyor 62, and
2 to the food filling unit side.

During the transfer in the transfer section 31 in the above-described transfer, the cylindrical container 40 passes through the area irradiated with the electron beam 27. In this irradiation area, the electron beam 27 is irradiated, so that various bacteria adhered to the surface of the cylindrical container 40 can be killed according to the absorbed dose. The obtained cylindrical container 40 can be continuously sterilized.

In the sterilization treatment using the electron beam 27, the irradiation distance and the absorbed dose of the electron beam to each part of the cylindrical container 40 can be equalized without increasing the output of the electron beam for the following reason.

That is, since the transport section 31 transports the cylindrical container 40 to the electron beam irradiation area in a sideways posture, the distance between the upper and lower portions of the container 40 and the electron gun section 28 of the electron beam generator 22 is changed. Can be reduced. By reducing the difference in irradiation distance, the difference in the absorbed dose of the electron beam 27 between the upper and lower portions of the cylindrical container 40 can be reduced. In other words, the irradiation distance to the upper and lower portions of the cylindrical container 40 can be equalized.

As a result, the cylindrical container 40 passing through the electron beam irradiation area is transferred to the electron gun section 28 together with the transport section 31.
Therefore, the energy output of the electron beam 27 can be relatively reduced, and the absorbed dose of the electron beam 27 in the cylindrical container 40 can be more increased in spite of that.

The transport section 31 further comprises a pair of rotary support shafts 35 and 36 which rotate the cylindrical container 40 in a sideways posture in which the axis is coincident with the direction of the transport by the thrust of the transport blade 37 in synchronization with the same direction. As a result, the electron beam is passed through the electron beam irradiation area while being rotated about the axis. 27 can be irradiated. In this way, the electron beam absorption dose to each part of the cylindrical container 40 is equalized, so that the required electron beam absorption dose can be easily obtained even under the low energy output of the electron beam 27.

By equalizing the irradiation distance and equalizing the dose absorbed by the electron beam for each part of the cylindrical container 40 as described above, the electron beam 27 can be used for the necessary sterilization treatment.
Can be implemented without increasing the output of the device. Therefore, it does not require enormous equipment costs to form the electron beam generator 22, and the sterilization apparatus 21 can be made compact while exhibiting the required sterilization processing performance.

Further, the transport unit 31 of the transport device 23 having the above-described configuration.
Generates heat due to the irradiation of the electron beam 27. However, since cooling water is circulated or circulated in the pair of rotation support shafts 35 and 36 forming the main part of the transport unit 31 and is subjected to water cooling, the rotation support It is excellent in that the temperature rise of the shafts 35 and 36 can be easily prevented.

In addition, according to the configuration of the transfer device 23 according to the first embodiment, the rotation of the cylindrical container 40 around the axis and the axial movement of the container 40 can be controlled by one drive unit 32.
This is also excellent in that the configuration of the transfer device 23 can be simplified.

In the configuration in which the spiral pitch L of the transport blade 37 is slightly larger than the entire length of the container 40 as in the first embodiment, only one cylindrical container 40 can fit in one spiral pitch L. Since it is not possible, they can be transported one by one continuously while preventing mutual interference of the containers 40, and the transport efficiency is excellent.

The present invention is not limited to the first embodiment. For example, conveying blades may be provided at a large pitch so that a plurality of cylindrical objects to be illuminated enter one spiral pitch, and the blades may be integrated with or separate from a rotary support shaft on which the conveying blades are provided. Get the net. Further, the irradiation target can be applied as a sterilization target as long as it has a form capable of rolling around its axis, and the entire container does not necessarily have to have the same diameter.

[0047]

According to the method and apparatus of the present invention implemented in the above-described manner, an object which can roll around an axis is placed in a sideways posture in which the axis intersects the direction of electron beam irradiation. In particular, in the apparatus of the present invention, the axis is in a sideways posture that coincides with the direction of conveyance, and while rotating around the axis, the electron beam for sterilization is passed through the electron beam irradiation area to be irradiated. The irradiation distance of the electron beam to the upper and lower portions of the irradiation object can be equalized, and the outer peripheral surface of the irradiation object can be evenly and uniformly irradiated with the electron beam, so that the dose of the electron beam absorbed to each part of the irradiation object can be equalized. As a result, it is possible to transport the object to be irradiated closer to the electron beam irradiation unit, thereby obtaining a larger amount of absorbed electron beam radiation, and to easily obtain necessary electron beams even under low energy electron beam output. Electron beam sterilization can be performed evenly by obtaining a beam absorption dose, and therefore, it is possible to prevent an increase in the output of the electron beam.

Further, in the invention in which the cooling medium is forced to pass through the inside of the pair of rotary support shafts provided in the transfer device, it is possible to prevent the temperature of the transfer portion from rising due to the irradiation of the electron beam.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view schematically showing a configuration of a sterilization processing apparatus including a sterilization processing transport device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a configuration of a drive unit included in the transfer device for sterilization processing according to the first embodiment, taken along line ZZ in FIG.

FIG. 3 is a perspective view showing a configuration of a transfer device for sterilization processing according to the first embodiment.

FIG. 4 is an enlarged plan view illustrating a configuration of a part of a transport unit included in the transport device for sterilization processing according to the first embodiment.

FIG. 5 is a cross-sectional view of the transport unit shown in FIG. 4 along the line YY.

FIG. 6 is a cross-sectional view of the cooling medium junction box taken along the line XX in FIG. 3;

FIG. 7 is a cross-sectional view schematically showing a configuration of a sterilization apparatus provided with a transfer device that performs a transfer method according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 ... Sterilization processing apparatus, 22 ... Electron beam generation apparatus, 23 ... Transport apparatus, 27 ... Electron beam, 28 ... Electron gun section, 31 ... Transport section, 32 ... Drive section, 33 ... Component supply section, 34 ... Component discharge section 35, a rotation support shaft, 36, a rotation support shaft, 37, a conveying blade, 40, a cylindrical container (irradiated object), 41, a cooling medium connection box, 42, a passage, 46, a cooling medium conduit, 51, a motor, 51a: Output shaft, 52: Drive wheel, 53: Driven wheel, 54: Driven wheel, 55: Chain.

Claims (3)

[Claims] 1. A sterilization treatment transport method for transporting an object to be rolled around an axis to an electron beam irradiation area to be irradiated with an electron beam for sterilization, thereby performing electron beam sterilization. A sterilization treatment transport method, characterized in that the irradiation object is passed through the electron beam irradiation region while being rotated in a sideways position where the axis thereof intersects the electron beam irradiation direction, and rotating around the axis. . 2. A method according to claim 1, further comprising: a transport unit that passes through an electron beam irradiation area irradiated with the electron beam for sterilization, and a driving unit that drives the transport unit. A transfer device for sterilization treatment that transfers the object to an irradiation area, wherein the transfer units are arranged in parallel with each other, and the transferred object is laid down in a sideways posture in which an axis of the transferred object coincides with the transfer direction. A pair of rotating support shafts to support,
A transport blade provided in a spiral shape on the outer periphery of one of the two rotation support shafts at a pitch greater than the length of the irradiation object, and the driving unit includes the two rotation support shafts. A transfer device for sterilization processing, wherein the transfer device rotates in the same direction. 3. The transfer apparatus for sterilization treatment according to claim 2, wherein said pair of rotary support shafts are hollow shafts, respectively, and a cooling medium is circulated therein.