X-ray security inspection apparatus

Abstract

The present application provides an X-ray security inspection device, which comprises a body, a conveyor belt and a lead curtain. The body has a through opening. The conveyor belt passes through the through opening and is arranged at the bottom of the through opening. The lead curtain suspends the body and covers the through opening. The lead curtain has a pair of outer modules and a central module. The outer modules are arranged on both sides corresponding to the conveying direction of the conveyor belt, and the central module is arranged between the outer modules. The lead equivalent thickness of the outer modules is greater than that of the central module, and the weight of the central module is less than that of the outer modules.

Description

TECHNICAL FIELD

[0001] The present application relates to a security inspection device, in particular to an X-ray security inspection device for security inspection of articles. BACKGROUND

[0002] The current X-ray security inspection device uses lead curtains with the same lead equivalent thickness to shield the radiation inside the machine body at the entrance and exit openings. Generally speaking, the use of lead curtains with a higher lead equivalent thickness has a better radiation shielding effect, but the lead curtains are heavier, which causes greater resistance when the goods pass through the opening, making it difficult for smaller articles to pass through the lead curtains into the machine body, and requiring a higher cost. However, the use of thinner lead curtains will cause the workers on both sides of the goods passage to have a higher radiation dose value, and cannot have a good shielding effect.

[0003] Therefore, the present application is aimed at solving the above-mentioned problems by means of careful research and the use of scientific principles. SUMMARY

[0004] The present application provides an X-ray security inspection device for security inspection of articles.

[0005] The present application provides an X-ray security inspection device, which includes a body, a conveyor belt, and a lead curtain. The body has an opening. The conveyor belt passes through the opening and is arranged at the bottom of the opening. The lead curtain is suspended from the body and covers the opening. The lead curtain has a pair of outer modules and a central module. The pair of outer modules is arranged on both sides of the conveyor belt in the conveying direction, and the central module is arranged between the pair of outer modules. The lead equivalent thickness of the outer modules is greater than that of the central module, and the weight of the central module is less than that of the outer modules.

[0006] The X-ray security inspection device of the present application has outer modules with a thickness greater than that of the central module. The outer modules have a plurality of outer curtain strips, and the central module has a plurality of central curtain strips. The thickness of the outer curtain strips is 3.0-3.5 mm, and the thickness of the central curtain strips is 2.0-2.5 mm.

[0007] The X-ray security inspection device of the present application has outer modules with a plurality of outer curtain strips, and the central module has a plurality of central curtain strips. The lead equivalent thickness of the outer curtain strips is 2 times that of the central curtain strips. The lead equivalent thickness of the outer curtain strips is 1.0 mm Pb, and the lead equivalent thickness of the central curtain strips is 0.5 mm Pb.

[0008] The X-ray security inspection device of the present application has a plurality of outer curtain strips in each outer module, which are arranged in two layers and staggered.

[0009] The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0010] The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0011] The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0012] The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0013] The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0014] The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 and Figure 2 The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0016] Figure 3 The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0017] Figure 4 The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt. Figure 3 The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0018] Figure 5 The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt. The X-ray security inspection device of the present application has a pair of lead curtains suspended above the top of the body. The bottom edges of the lead curtains are adjacent to but not in contact with the conveyor belt.

[0019] Figure 6 A lateral cross-sectional view of the lead curtain of the X-ray security inspection device of the preferred embodiment of the present application;

[0020] Figure 7 For Figure 6 An enlarged view of the area 7 shown in the figure.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 100: body

[0023] 101: through hole

[0024] 200: conveying belt

[0025] 300: lead curtain

[0026] 301: lock hole

[0027] 302: lock hole

[0028] 310: outer module

[0029] 311: outer curtain strip

[0030] 312: outer base

[0031] 320: central module

[0032] 321: central curtain strip

[0033] 322: central base

[0034] D: conveying direction

[0035] t1: thickness

[0036] t2: thickness DETAILED DESCRIPTION

[0037] Referring to Figures 1 to 2 , the preferred embodiment of the present application provides an X-ray security inspection device, which comprises a body 100, a conveying belt 200 and at least one lead curtain 300.

[0038] In the present embodiment, the body 100 is a metal shell, and the body 100 has at least one through hole 101 on the side surface thereof, and in the present embodiment, the body 100 has two through holes 101 arranged on opposite sides of the side surface of the body 100, but the present application is not limited thereto. The body 100 is provided with an X-ray emitter to emit X-rays inside the body 100.

[0039] The conveyor belt 200 passes through the through-openings 101 and is arranged at the bottom of the through-openings 101. In this embodiment, the conveyor belt 200 passes through the body 100 through the pair of through-openings 101, respectively. The conveyor belt 200 is used to input the object to be scanned into the body 100 for X-ray scanning.

[0040] The lead curtains 300 suspend the body 100 and cover the through-openings 101. In this embodiment, a pair of lead curtains 300 is suspended on the body 100 corresponding to the pair of through-openings 101, respectively, and each of the lead curtains 300 covers the corresponding through-opening 101. In this embodiment, the lead curtains 300 are preferably suspended at the top of the through-openings 101 and the bottom edges of the lead curtains 300 are adjacent to but not in contact with the conveyor belt 200, but the present application is not limited to the position of the suspension.

[0041] The two lead curtains 300 described above have the same structure and achieve the same effect, so only one of the lead curtains 300 will be described below. Referring to Figures 3 to 7 , the lead curtain 300 has a pair of outer modules 310 and a central module 320. The pair of outer modules 310 is arranged corresponding to the two sides of the conveying direction D of the conveyor belt 200, and the central module 320 is arranged between the pair of outer modules 310, and the central module 320 is arranged at the center of the through-opening 101. The lead equivalent thickness of the outer module 310 is greater than that of the central module 320. Since lead has a large absorption effect on radiation, it is a widely used material for radiation protection. When using other protective materials and considering their protection efficiency, lead equivalent is often used for comparison. The lead equivalent thickness of an object refers to the thickness of a lead plate that has the same radiation absorption capacity as the object.

[0042] It is worth noting that the lead equivalent thickness of the outer module 310 and the central module 320 is positively correlated with the occupancy factor (T), which is the probability of people staying in the area. The occupancy factor T1 on both sides of the through-opening 101 is higher than the occupancy factor T2 at the center of the through-opening 101, and T1 can be equal to 2 to 16 times T2. According to the existing scattering shielding formula, the corresponding lead equivalent thickness is obtained by different occupancy factors (T), so the lead equivalent thickness of the outer module 310 is greater than that of the central module 320.

[0043] In this embodiment, the outer module 310 has a plurality of outer curtain strips 311, and the central module 320 has a plurality of central curtain strips 321. The lead equivalent thickness of each outer curtain strip 311 is greater than the lead equivalent thickness of each central curtain strip 321. Preferably, the lead equivalent thickness of each outer curtain strip 311 is twice the lead equivalent thickness of each central curtain strip 321. Specifically, the lead equivalent thickness of the outer curtain strip 311 is 1.0 mm Pb, and the lead equivalent thickness of the central curtain strip 321 is 0.5 mm Pb. In this embodiment, in order to facilitate manufacturing, the outer curtain strips 311 and the central curtain strips 321 are made of the same lead rubber, so the thickness of the outer module 310 is greater than the thickness of the central module 320, and the weight of the central module 320 is less than the weight of the outer module 310. In practice, the thickness t1 of the outer curtain strip 311 is about 3.0 mm to 3.5 mm, and the thickness t2 of the central curtain strip 321 is about 2.0 mm to 2.5 mm.

[0044] In this embodiment, one end of each of the plurality of central curtain strips 321 is fixed to a central base 322. The plurality of central curtain strips 321 are arranged in two rows in a stacked manner and are staggered, so as to block the gap between two adjacent central curtain strips 321 and prevent X-ray leakage in the body 100. The central base 322 is preferably a straight metal piece, and the central base 322 is provided with a plurality of locking holes 302 for locking to the top of the body 100. Each locking hole 302 is an elongated hole extending in the longitudinal direction of the central base 322, that is, an elongated hole extending in the conveying direction D. In this way, the central module 320 can be translated inwardly or outwardly along the opening direction of the through opening 101 to eliminate the assembly tolerance between the central module 320 and the outer module 310.

[0045] In this embodiment, one end of each of the plurality of outer curtain strips 311 is fixed to an outer base 312. The plurality of outer curtain strips 311 are arranged in two rows in a stacked manner and are staggered, so as to block the gap between two adjacent outer curtain strips 311 and prevent X-ray leakage in the body 100. The outer base 312 is preferably a straight metal piece, and the outer base 312 is provided with a plurality of locking holes 301 for locking to the top of the body 100. Each locking hole 301 is an elongated hole extending in the transverse direction of the outer base 312, that is, the extension direction of each locking hole 301 is perpendicular to the conveying direction D. In this way, the outer module 310 can be translated laterally along the through opening 101 in coordination with the side edge of the through opening 101 and the position of the central module 320 to eliminate the assembly tolerance.

[0046] Referring to Figure 6 and Figure 7In this embodiment, the outer curtain 311 and the central curtain 321 are arranged in an overlapping manner and staggered arrangement at the joint of the central module 320 and each outer module 310. The central module 320 can be adjusted in position along the conveying direction D due to the extension direction of the lock hole 302, so that the central curtain 321 can be adjusted in position to overlap the outer curtain 311 closely, thereby being able to block the gap between the joint of the central module 320 and each outer module 310 to block the X-ray leakage in the body 100.

[0047] The X-ray security inspection device of the present application has the lead curtain 300 with the outer modules 310 and the central module 320, and the lead equivalent thickness of the outer modules 310 is greater than that of the central module 320. Therefore, the X-ray leakage in the body 100 can be effectively blocked to the working personnel occupying area on both sides of the through opening 101. In this embodiment, the central module 320 is the main contact area when the object passes through the lead curtain 300, the overall width of the central module 320 can be 1 to 2 times of the overall width of each outer module 310, and the weight of the central module 320 is less than that of the outer module 310 to ensure that the object sent into the body 100 can smoothly push away the lead curtain 300.

[0048] The above description is only the preferred embodiment of the present application, not to limit the patent scope of the present application, other equivalent changes using the patent spirit of the present application, should all belong to the patent scope of the present application.

Claims

1. An X-ray security inspection apparatus, comprising a body having a passageway; a conveyor belt passing through the passageway and disposed at a bottom of the passageway; and a lead curtain suspended from the body and covering the passageway, the lead curtain having a pair of outer modules and a central module, the pair of outer modules being disposed on two sides of a conveying direction of the conveyor belt and the central module being disposed between the pair of outer modules; wherein a lead equivalent thickness of the outer modules is greater than a lead equivalent thickness of the central module, and a weight of the central module is less than a weight of the outer modules; the lead equivalent thicknesses of the outer modules and the central module are positively correlated with an occupancy factor, which is a probability of a person staying in an area, the occupancy factor being higher on the two sides of the passageway than in the center of the passageway.

2. The X-ray security inspection apparatus according to claim 1, wherein a thickness of the outer modules is greater than the central module.

3. The X-ray security inspection apparatus according to claim 2, wherein the outer modules have a plurality of outer curtain strips, the central module has a plurality of central curtain strips, the outer curtain strips have a thickness of 3.0 mm to 3.5 mm, and the central curtain strips have a thickness of 2.0 mm to 2.5 mm.

4. The x-ray security inspection apparatus of claim 1, wherein the outer module has a plurality of outer curtain rods, the central module has a plurality of central curtain rods, wherein, A lead equivalent thickness of each of the outer curtain strips is twice a lead equivalent thickness of each of the central curtain strips.

5. The X-ray security inspection apparatus according to claim 4, wherein the lead equivalent thickness of each of the outer curtain strips is 1.0 mm Pb, and the lead equivalent thickness of each of the central curtain strips is 0.5 mm Pb.

6. The X-ray security inspection apparatus according to claim 1, wherein each of the outer modules has a plurality of outer curtain strips, the plurality of outer curtain strips are arranged in two rows in a stacked manner and staggered.

7. The X-ray security inspection apparatus according to claim 1, wherein the central module has a plurality of central curtain strips, the plurality of central curtain strips are arranged in two rows in a stacked manner and staggered.

8. The X-ray security inspection apparatus according to claim 1, wherein each of the outer modules has a plurality of outer curtain strips, the central module has a plurality of central curtain strips, the outer curtain strips and the central curtain strips arranged at an intersection of the central module and each of the outer modules are arranged in a staggered manner.

9. The X-ray security inspection apparatus according to claim 1, wherein the lead curtain is suspended from a top of the passageway.

10. The X-ray security inspection apparatus according to claim 1, wherein a bottom edge of the lead curtain is adjacent to but not in contact with the conveyor belt.

11. The X-ray security inspection apparatus according to claim 1, wherein the body has a pair of passageways, and a pair of lead curtains are suspended from the body correspondingly, the conveyor belt passes through the body through the pair of passageways respectively, and each of the lead curtains covers a corresponding one of the passageways respectively.

12. The X-ray security inspection apparatus according to claim 1, wherein an overall width of the central module is 1 to 2 times an overall width of each of the outer modules.

13. The x-ray security inspection apparatus of claim 1, wherein the central module further comprises a central base to lock the central module to the top of the body, wherein the central base comprises a plurality of lock holes that are elongated holes extending in the conveyance direction.

14. The x-ray security inspection apparatus of claim 1, wherein the lateral module further comprises a lateral base to lock the lateral module to the top of the body, wherein the lateral base comprises a plurality of lock holes that are elongated holes perpendicular to the conveyance direction.

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