X-ray inspection equipment

Abstract

To provide an X-ray inspection device with which it is possible to improve adaptability to high-speed conveyance and reduce the device size.SOLUTION: Provided is an X-ray detection device 1 comprising a shielded container 10 having an analyte carry-in port 15 and carry-out port 16; an X-ray source 20 for irradiating the analyte located at an inspection region A in the shielded container 10 with an X-ray and a detector 21 for detecting the X-ray having passed through the analyte; and conveyors 3, 22, 4 for conveying the analyte from the carry-in port 15 through the inspection region A to the carry-out port 16 in such a manner as to not obstruct X-ray detection by the detector 21. A shielding material 25 is provided between the detector 21 in the shielded container 10 and the carry-in port 15 and carry-out port 16 in such a way as not to protrude to the analyte conveyance range, and as to obstruct the X-ray scattering from above a detection surface 21a of the detector 21 toward the carry-in port 15 and carry-out port 16.SELECTED DRAWING: Figure 2

Claims

1. An X-ray inspection device that uses X-rays to examine a subject, A shielded container having an entrance and an exit for the subject, An X-ray source that irradiates a subject located in the inspection area within the shielded container with X-rays, and a detector that detects the X-rays that have passed through the subject, A transport means for transporting the subject from the entrance through the inspection area to the exit in a predetermined transport direction without interfering with the detection of X-rays by the detector, A shielding material is provided between the detector in the shielding container and the entrance and exit so as not to protrude into the transport range of the subject by the transport means, and so as to block X-rays scattered from the detection surface of the detector toward the entrance and exit, Equipped with, The direction of irradiation of X-rays from the aforementioned X-ray source is vertical. The detector is provided such that the detection surface is recessed below the transport range in the direction of X-ray irradiation, The shielding material is positioned between the transport range and the detection surface with respect to the irradiation direction. The transport means includes an loading means for loading the subject into the loading entrance while supporting it from below, an unloading means for unloading the subject from the unloading exit while supporting it from below in the transport direction, and an internal transport means for transporting the subject in the inspection area while holding it from the side relative to the direction of X-ray irradiation, wherein the loading means and the unloading means are arranged apart in the transport direction so that the inspection area is clear, and the internal transport means is positioned between the loading means and the unloading means. An X-ray inspection apparatus in which the shielding material is provided so as to be sandwiched between the loading means and the unloading means in the transport direction.

2. The X-ray inspection apparatus according to claim 1, wherein the internal transport means is provided to transport the subject by sandwiching and holding it from the side with respect to the irradiation direction using a pair of belts that travel in the transport direction.

3. The X-ray inspection apparatus according to claim 1 or 2, wherein the shielding material is provided outside the X-ray irradiation range.

4. The X-ray inspection apparatus according to claim 3, further comprising a diaphragm for limiting the irradiation range.

5. The X-ray inspection apparatus according to claim 3 or 4, wherein the detector is a line sensor type detector whose X-ray detection range is extended one-dimensionally in a direction perpendicular to the transport direction.

6. The X-ray inspection apparatus according to any one of claims 1 to 5, wherein the entrance and exit are each formed in a shape that conforms to the outer contour of the specimen to be inspected.

7. The X-ray inspection apparatus according to claim 6, wherein at least one of the shape and size of the entrance and the exit can be changed.

8. The shielding container comprises a plurality of opening limiting members that can be selectively attached to the entrance side and the exit side, respectively, to narrow the openings for providing the entrance and exit and define the shape and size of the entrance and exit. The X-ray inspection apparatus according to claim 7, wherein, among the opening limiting members that can be attached to the entrance side, the entrance is differentiated in at least one of its shape and size, and among the opening limiting members that can be attached to the exit side, the exit is differentiated in at least one of its shape and size.

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