Ray source shielding device and ray detector

Abstract

The utility model relates to a ray source shielding device and a ray detector, which comprise a base, the top of the base is provided with a groove and a conveying belt for conveying food, the surface of the conveying belt is uniformly provided with a plurality of small holes, the groove is internally connected with a negative pressure mechanism for increasing the friction force between the conveying belt and the food, and the negative pressure mechanism is connected with the conveying belt. The top of the base is connected with a supporting frame, and the two sides of the supporting frame are each connected with a lead bag used for shielding X-rays. The utility model relates to the technical field of ray detection machines. According to the ray source shielding device and the ray detection machine, through the arranged negative pressure mechanism, the friction force between food and the conveying belt can be enhanced, so that when the food is conveyed by the conveying belt, the situation that the food cannot normally enter the irradiation range of an X-ray emitter due to blocking of a lead bag is avoided; and the efficiency of food continuous detection is improved while X-rays are ensured not to leak.

Description

Technical Field

[0001] The utility model relates to the technical field of ray detection machines, in particular to a ray source shielding device and a ray detection machine. Background Art

[0002] X-ray food foreign body detector, also known as X-ray foreign body detector, or X-ray foreign body detector. It generates X-rays through the equipment and uses the penetrating ability of X-rays to detect metal foreign bodies mixed in the product and non-metallic foreign bodies with higher density. By using the penetrating ability of X-rays, hard foreign bodies such as bones and plastics as well as various types of metal foreign bodies can be detected with higher sensitivity and stability, effectively improving the quality of finished products. It can not only detect foreign bodies in food (such as various meat products, aquatic products, fruits and vegetables, additives, milk powder, chocolate, etc.), including metal, glass, ceramics, stones, bones, plastics, etc.; it can also identify product defects, such as packaging cracks and bubbles, content defects, etc.; and achieve complete finished product inspection.

[0003] In the prior art, X-rays are harmful to the human body, whether they are direct or scattered, so a lead bag is usually installed around the X-ray emitter to shield the X-rays. However, the lead bag is heavy, and the traction applied to the food when the conveyor belt transports the food cannot lift the lead bag, resulting in the food being unable to enter the effective range of the X-ray emitter. In addition, leaving a gap in the lead bag for the food to pass through will result in the lead bag being unable to effectively protect against X-rays. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a radiation source shielding device and a radiation detection machine so as to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A radiation source shielding device comprises a base, a groove is formed on the top of the base and a conveyor belt for conveying food is arranged, a plurality of small holes are evenly distributed on the surface of the conveyor belt, a negative pressure mechanism for increasing the friction between the conveyor belt and food is connected in the groove, a support frame is connected to the top of the base, and lead bags for shielding X-rays are connected to both sides of the support frame.

[0007] Furthermore, the negative pressure mechanism includes an air inlet pipe, a fan and a baffle. The air inlet pipe is arranged in the middle of the conveyor belt in the groove, the outer wall of the base is fixedly connected with a fan connected to the air inlet pipe, and baffles are fixedly connected on both sides and the bottom of the conveyor belt in the groove.

[0008] Furthermore, two lead bags are provided on both sides of the support frame, one of which is connected to the edge of the support frame, and the other is located inside the support frame and connected to the support frame through an adjustment component.

[0009] Furthermore, the adjustment assembly includes a slider, an adjustment rod, a slide rod and an adjustment knob, the inner side walls of the support frame located on both sides of the inner top wall are provided with slide grooves, the two slide grooves are slidably connected with sliders, and the two sliders are fixedly connected to the two sides of the lead bag respectively;

[0010] A sliding rod is fixedly connected in one of the sliding grooves, and the sliding block is slidably connected to the sliding rod;

[0011] Another adjusting rod is rotatably connected in the other slide groove, and both ends of the adjusting rod are provided with external threads, and the two external threads are symmetrically arranged with the center point of the adjusting rod as a reference. The slider is threadedly connected to the adjusting rod, and both ends of the adjusting rod extend out of the support frame and are connected with adjusting knobs.

[0012] Furthermore, the tops of the inner side walls of the grooves located at the input end and the output end of the conveyor belt are both protruded to form anti-stuck pieces, and a gap is left between the anti-stuck pieces and the conveyor belt to prevent friction.

[0013] In summary, the present invention includes at least one of the following beneficial technical effects:

[0014] 1. This radiation source shielding device can enhance the friction between food and the conveyor belt by setting a negative pressure mechanism, so that when the food is transported by the conveyor belt, it will not be blocked by the lead bag and cannot normally enter the irradiation range of the X-ray emitter, thereby ensuring that the X-rays will not leak and improving the efficiency of continuous food detection;

[0015] 2. This radiation source shielding device can provide double protection to prevent X-ray leakage by setting up two lead bags. At the same time, it is provided with an adjustment component that can be used to adjust the distance between the two lead bags to cope with the detection of foods of more sizes, so as to avoid the distance between the two lead bags being smaller than the packaging size of the food and being lifted up at the same time, causing X-ray leakage.

[0016] A radiation detection machine comprises a radiation source shielding device and an X-ray ray emitter, wherein the X-ray ray emitter is fixedly connected to the center of the inner top wall of the support frame.

[0017] In summary, the utility model includes the following beneficial technical effects:

[0018] This kind of ray detection machine, by setting the X-ray emitter at the center of the inner top wall of the support frame, can use the lead bags on both sides of the support frame to protect the X-ray rays, which can effectively prevent the leakage of X-rays when detecting food, and effectively improve the safety of the ray detection machine during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The utility model is a structural schematic diagram of a radiation source shielding device and a radiation detection machine.

[0021] Figure 2 The utility model is a schematic diagram of the internal structure of a radiation source shielding device and a support frame in a radiation detection machine.

[0022] Figure 3 The utility model is a schematic diagram of the internal structure of a radiation source shielding device and a base in a radiation detection machine.

[0023] Figure 4 The utility model is a structural schematic diagram of a radiation source shielding device and an adjusting component in a radiation detection machine.

[0024] In the figure, 1. base; 2. groove; 3. conveyor belt; 4. negative pressure mechanism; 41. air inlet pipe; 42. fan; 43. baffle; 5. support frame; 6. lead bag; 7. adjustment component; 71. slider; 72. adjustment rod; 73. slide rod; 74. adjustment knob; 8. slide slot; 9. anti-stuck part; 10. X-ray emitter. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] Example:

[0027] Reference Figure 1 - Figure 4 The utility model discloses a radiation source shielding device, comprising a base 1, a groove 2 is formed on the top of the base 1 and a conveyor belt 3 for conveying food is provided, a plurality of small holes are evenly distributed on the surface of the conveyor belt 3, a negative pressure mechanism 4 for increasing the friction between the conveyor belt 3 and food is connected in the groove 2, a support frame 5 is connected to the top of the base 1, and lead bags 6 for shielding X-rays are connected to both sides of the support frame 5.

[0028] In this embodiment, the negative pressure mechanism 4 is started, and then the fan 42 is operated to draw air through the air inlet pipe 41, so that the outside air enters the groove 2 through the small holes in the conveyor belt 3, and then the food is placed on the conveyor belt 3 using a linear drive or a robotic arm. At this time, the food blocks the small holes in the conveyor belt 3, causing the small holes at the current position to be blocked, so that the outside air squeezes the food and presses the food on the conveyor belt 3, increasing the pressure between the food and the conveyor belt 3, thereby enhancing the friction between the food and the conveyor belt 3, thereby ensuring the stability of the conveyor belt in transporting food.

[0029] Then the conveyor belt 3 runs to move the food. Because the friction between the food and the conveyor belt 3 increases, the traction force of the conveyor belt 3 on the food increases, so that the food can lift the lead bag 6 and enter the interior of the support frame 5. Then the food will pass through the X-ray emitter 10 for inspection. The inspected food will come out through the output end of the conveyor belt 3, which can ensure that the X-rays will not leak due to scattering while allowing the food to be continuously and efficiently inspected.

[0030] In a further preferred embodiment of the present invention, Figure 3 As shown, the negative pressure mechanism 4 includes an air inlet pipe 41, a fan 42 and a baffle 43. The air inlet pipe 41 is arranged in the middle of the conveyor belt 3 in the groove 2, the fan 42 connected to the air inlet pipe 41 is fixedly connected to the outer wall of the base 1, and baffles 43 are fixedly connected on both sides and the bottom of the conveyor belt 3 in the groove 2.

[0031] In this embodiment, because the air inlet pipe 41 is located in the middle of the conveyor belt 3, when the fan 42 draws the air in the groove 2 through the air inlet pipe 41, the air will flow from the surroundings of the conveyor belt 3 to the center of the conveyor belt 3, which will cause the overall suction of the conveyor belt 3 to weaken. Therefore, baffles 43 are connected to the sides and bottom of the groove 2 on the conveyor belt 3, which can be used to block the air flow at the bottom and sides of the conveyor belt 3, thereby enhancing the suction at the top of the conveyor belt 3, which has the effect of increasing the friction between the conveyor belt 3 and the food.

[0032] In a further preferred embodiment of the present invention, Figure 4 As shown, two lead bags 6 are provided on both sides of the support frame 5, one of which is connected to the edge of the support frame 5, and the other is located inside the support frame 5 and connected to the support frame 5 through an adjustment component 7.

[0033] In this embodiment, when the lead bag 6 is lifted up by food during transportation and enters the irradiation range of the X-ray emitter 10, a gap will be generated between the lead bag 6 and the conveyor belt 3, resulting in leakage of X-rays. Therefore, two lead bags 6 are arranged on both sides of the support frame 5, so that after the lead bag 6 at the edge is pushed open by the food, there is still one lead bag 6 that remains in contact with the conveyor belt 3, which can effectively prevent leakage of X-rays.

[0034] In a further preferred embodiment of the present invention, Figure 4 As shown, the adjustment assembly 7 includes a slider 71, an adjustment rod 72, a slider 73 and an adjustment knob 74. The inner side walls of the support frame 5 on both sides of the inner top wall are provided with slide grooves 8. The two slide grooves 8 are slidably connected with sliders 71. The two sliders 71 are fixedly connected to the two sides of the lead bag 6 respectively.

[0035] A slide rod 73 is fixedly connected in one of the slide grooves 8, and the slider 71 is slidably connected to the slide rod 73;

[0036] Another adjusting rod 72 is rotatably connected in the other slide groove 8, and both ends of the adjusting rod 72 are provided with external threads, and the two external threads are symmetrically arranged with the center point of the adjusting rod 72 as a reference. The slider 71 is threadedly connected to the adjusting rod 72, and both ends of the adjusting rod 72 extend out of the support frame 5 and are connected to an adjusting knob 74.

[0037] In this embodiment, the packaging size of the food is different depending on the type and style of the food. Therefore, when the distance between the two lead bags 6 is smaller than the size of the food, the two lead bags 6 will be lifted up by the food and cause X-ray leakage. Therefore, an adjustment knob 74, an adjustment rod 72 and a slider 71 are provided. The slider 71 can be controlled by rotating the adjustment knob 74 to move the lead bag 6 inside the adjustment support frame 5.

[0038] By arranging the external threads at both ends of the adjusting rod 72 symmetrically about the center of the adjusting rod 72, the lead bags 6 on both sides of the support frame 5 can be moved synchronously when the adjusting rod 72 is rotated, so that the X-rays will not be leaked when the food enters the support frame 5 or goes out of the support frame 5, further improving the practicality of the radiation source shielding device.

[0039] In a further preferred embodiment of the present invention, Figure 1 As shown, the top of the inner side wall of the groove 2 located at the input end and the output end of the conveyor belt 3 are both protruded to form an anti-stuck member 9, and a gap is left between the anti-stuck member 9 and the conveyor belt 3 to prevent friction.

[0040] In this embodiment, because the conveyor belt 3 absorbs food through the negative pressure at the small holes, the conveyor belt 3 will pull the food into the gap when it moves to the edge. Therefore, in order to prevent the food from getting stuck in the gap and affecting the operation of the radiation source shielding device, an anti-stuck component 9 is provided on the top of the inner wall of the groove 2 at the input and output ends of the conveyor belt 3, which is used to prevent the food from getting stuck in the gap and improve the operating stability of the radiation source shielding device.

[0041] Reference Figure 2 The utility model discloses a radiation detection machine, which includes a radiation source shielding device and an X-ray ray emitter 10. The X-ray ray emitter 10 is fixedly connected to the center of the inner top wall of the support frame 5.

[0042] In this embodiment, by setting the X-ray emitter 10 at the center of the inner top wall of the support frame 5, the lead bags 6 on both sides of the support frame 5 can be used to protect the X-rays, which can effectively prevent the leakage of X-rays when inspecting food, and effectively improve the safety of the radiation detection machine during use.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A radiation source shielding device, comprising a base (1), characterized in that: The top of the base (1) is provided with a groove (2) and a conveyor belt (3) for conveying food. The surface of the conveyor belt (3) is evenly distributed with a plurality of small holes. A negative pressure mechanism (4) for increasing the friction between the conveyor belt (3) and the food is connected inside the groove (2). The top of the base (1) is connected with a support frame (5). Both sides of the support frame (5) are connected with lead bags (6) for shielding X-rays.

2. A radiation source shielding device according to claim 1, characterized in that: The negative pressure mechanism (4) comprises an air inlet pipe (41), a fan (42) and a baffle (43); the air inlet pipe (41) is arranged in the middle of the conveyor belt (3) in the groove (2); the fan (42) connected to the air inlet pipe (41) is fixedly connected to the outer wall of the base (1); and baffles (43) are fixedly connected on both sides and the bottom of the conveyor belt (3) in the groove (2).

3. A radiation source shielding device according to claim 1, characterized in that: Two lead bags (6) are provided on both sides of the support frame (5), one of which is connected to the edge of the support frame (5), and the other is located inside the support frame (5) and connected to the support frame (5) via an adjustment component (7).

4. A radiation source shielding device according to claim 3, characterized in that: The adjusting assembly (7) comprises a slider (71), an adjusting rod (72), a slider (73) and an adjusting knob (74); the inner side walls of the support frame (5) located on both sides of the inner top wall are provided with sliding grooves (8); the two sliding grooves (8) are slidably connected with sliders (71); the two sliders (71) are respectively fixedly connected to the two sides of the lead bag (6); A slide rod (73) is fixedly connected in one of the slide grooves (8), and the slide block (71) is slidably connected to the slide rod (73); Another of the slide grooves (8) is rotatably connected with an adjusting rod (72), both ends of the adjusting rod (72) are provided with external threads, and the two external threads are symmetrically arranged with the center point of the adjusting rod (72) as a reference. The slider (71) is threadedly connected to the adjusting rod (72), and both ends of the adjusting rod (72) extend out of the support frame (5) and are connected with an adjusting knob (74).

5. A radiation source shielding device according to claim 1, characterized in that: The top of the inner side wall of the groove (2) located at the input end and the output end of the conveyor belt (3) is protruded to form an anti-stuck component (9), and a gap is left between the anti-stuck component (9) and the conveyor belt (3) to prevent friction.

6. A radiation detection machine, characterized in that: The radiation detection machine comprises a radiation source shielding device as described in any one of claims 1 to 5, and also comprises an X-ray emitter (10), wherein the X-ray emitter (10) is fixedly connected to the center of the inner top wall of the support frame (5).

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