Shielding device for electron beam radiation chamber protection

Abstract

The utility model discloses a shielding device for electron beam radiation chamber protection, which comprises side baffle plates and a top plate which are arranged in a radiation chamber, the side baffle plates and the top plate are detachably connected, the bottom ends of the side baffle plates are provided with assembling plates, a conveying mechanism is arranged between adjacent side baffle plates, and a fixing plate positioned above the conveying mechanism is arranged between the side baffle plates. A movable baffle connected with the linear reciprocating motion mechanism is arranged in the fixing plate, a distance detection assembly facing the conveying mechanism is arranged on the top plate, a bearing plate connected with the side baffles is arranged below the conveying mechanism, a supporting plate is connected to the top of the bearing plate, and a shielding piece is connected to the supporting plate. According to the X-ray shielding device, through the arrangement of the conveying mechanism, the distance detection assembly, the bearing plate, the supporting plate, the fixed plate and the movable baffle, the X-ray diffusion path is effectively reduced, the X-ray shielding performance is improved, and the X-ray shielding device can adapt to conveying mechanisms of various different heights at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of electron beam radiation chamber shielding, in particular to a shielding device for protecting an electron beam radiation chamber. Background Art

[0002] When the electron irradiation accelerator is in operation, the accelerated charged particles are drawn out from the vacuum area of ​​the accelerator and interact with the impacted material to generate X-rays. The radiation that the irradiation chamber mainly needs to shield is X-rays. The existing patent (Announcement No.: CN115424758A) discloses a radiation shielding mechanism and method for an electron irradiation accelerator. The invention adopts local shielding to block the inlet and outlet of the irradiation chamber to reduce the X-ray dose nearby, thereby enhancing the shielding performance and improving safety. Since the shielding mechanism is an assembled structure, it is easy to disassemble and assemble, so that it can be applied to different production lines. However, in actual applications, the height of the conveying mechanism is different, and the height of the second end baffle is fixed. If the height of the conveying mechanism is too low, the distance between the conveying mechanism and the second end baffle will be too large, reducing the shielding performance and making the shielding mechanism unsuitable. To this end, we propose a shielding device for protecting an electron beam irradiation chamber. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a shielding device for protecting an electron beam radiation room.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A shielding device for protecting an electron beam radiation chamber is designed, comprising a side baffle and a top plate arranged in the radiation chamber, wherein the side baffle and the top plate are detachably connected, an assembly plate is provided at the bottom end of the side baffle, a conveying mechanism is provided between adjacent side baffles, a fixed plate located above the conveying mechanism is provided between the side baffles, a movable baffle connected to a linear reciprocating motion mechanism is provided in the fixed plate, a distance detection component facing the conveying mechanism is provided on the top plate, a bearing plate connected to the side baffle is provided below the conveying mechanism, a support plate abutting against the conveying mechanism is elastically connected to the top of the bearing plate, and a shielding member located between the side of the conveying mechanism and the side baffle is connected to the support plate.

[0006] In the above scheme, a lining plate inserted into the side baffle is fixed to the bottom of the top plate, and a limiting assembly is inserted between the side baffle and the lining plate, and the limiting assembly includes a connecting rod and a limiting sleeve.

[0007] In the above scheme, the lining plate and the side baffle are both provided with insertion holes matching the connecting rod, and both ends of the connecting rod are threadedly connected with limiting sleeves, and the limiting sleeves are L-shaped.

[0008] In the above solution, the distance detection component includes a mounting arm fixed to the top plate, and a distance sensor is installed at the bottom of the mounting arm.

[0009] In the above solution, a mounting groove is provided on the top of the bearing plate, and a symmetrically arranged gas spring is movably connected between the inner wall of the mounting groove and the support plate.

[0010] In the above scheme, the shielding member includes a protective cover fixed to the support plate through a connecting arm, guide rods are horizontally fixed at the upper and lower ends of the protective cover, a shield plate abutting against the conveying mechanism is movably sleeved on the guide rod, and a spring is sleeved on the guide rod with its two ends respectively connected to the protective cover and the shield plate.

[0011] In the above solution, a mounting hole is opened on the top plate, a buffer sleeve is embedded in the mounting hole, and the buffer sleeve is EVA plastic foam.

[0012] The advantages and beneficial effects of the utility model are as follows: by setting a conveying mechanism, a distance detection component, a load-bearing plate, a support plate, a fixed plate and a movable baffle, when the conveying mechanism is working, a distance sensor is used to measure the distance between the product on the conveying mechanism and the top plate, and then the distance between the product and the fixed plate is known, so that the movable baffle moves up and down to fill the gap between the conveying mechanism and the fixed plate, effectively reducing the diffusion path of X-rays above the conveying mechanism, and cooperating with the support plate elastically connected to the load-bearing plate so that the gap between the conveying mechanism and the load-bearing plate is blocked. Compared with the prior art, if the conveying mechanism is too low, pressure is applied to the support plate to move the support plate downward so as to be placed in the conveying mechanism. If the conveying mechanism is too high, it can also cooperate with the support plate in a natural state to fill the gap between the conveying mechanism and the load-bearing plate, effectively reducing the diffusion path of X-rays below the conveying mechanism. Not only the shielding performance of X-rays is improved, but also it can adapt to conveying mechanisms of various heights at the same time, thereby enhancing flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be 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 paying creative labor.

[0014] Figure 1 This is a side view of a shielding device for protecting an electron beam radiation room proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the specific structure of a side baffle of a shielding device for protecting an electron beam radiation chamber proposed by the utility model;

[0016] Figure 3 The utility model discloses a schematic diagram of the connection structure of a carrier plate and a support plate of a shielding device for protecting an electron beam radiation chamber.

[0017] In the figure: connecting arm 1, side baffle 2, top plate 3, lining plate 4, connecting rod 5, limit sleeve 6, jack 7, assembly plate 8, conveying mechanism 9, mounting hole 10, buffer sleeve 11, fixed plate 12, movable baffle 13, mounting arm 14, distance sensor 15, bearing plate 16, support plate 17, mounting groove 18, gas spring 19, baffle 20, protective cover 21, guide rod 22, spring 23. DETAILED DESCRIPTION

[0018] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] See also Figure 1-3 The utility model provides a technical solution: a shielding device for protecting an electron beam radiation chamber, comprising a side baffle 2 and a top plate 3 arranged in the radiation chamber, the side baffles 2 are arranged opposite to each other, and a fixed space is left between them for the conveying mechanism 9 described below to be inserted, and the side baffles 2 and the top plate 3 are detachably connected;

[0020] Furthermore, a lining plate 4 inserted into the side baffle plate 2 is fixed at the bottom of the top plate 3, the lining plate 4 is in contact with the inner wall of the top end of the side baffle plate 2, and a limiting component is inserted between the side baffle plate 2 and the lining plate 4, and the limiting component includes a connecting rod 5 and a limiting sleeve 6;

[0021] Furthermore, the lining plate 4 and the side baffle plate 2 are provided with a socket 7 matching the connecting rod 5, and both ends of the connecting rod 5 are threadedly connected to a limiting sleeve 6, and the limiting sleeve 6 is L-shaped;

[0022] Specifically, the connecting rod 5 is inserted into the socket 7 in sequence, and then the limiting sleeves 6 are sleeved on both ends of the connecting rod 5 to prevent the connecting rod 5 from being separated from the socket 7, thereby preventing the cover plate 3 and the side baffle 2 from separating, thereby ensuring the stability of the assembly structure.

[0023] Furthermore, a mounting hole 10 for inserting the under-beam device is provided on the top plate 3, a buffer sleeve 11 is embedded in the mounting hole 10, a through hole is provided in the center of the buffer sleeve 11 so as to allow the under-beam device to pass through, and the buffer sleeve 11 is made of EVA plastic foam; the EVA plastic foam is light and elastic, and the elastic deformation of the buffer sleeve 11 can be used to install under-beam devices of various specifications, and can automatically fill the gap between the under-beam device and the inner wall of the mounting hole 10, and as Figure 2 As shown, by utilizing the characteristic of the downwardly inserted bundle device into the buffer sleeve 11, the buffer sleeve 11 can be effectively prevented from being separated from the mounting hole 10, thereby improving stability;

[0024] An assembly plate 8 is fixedly provided at the bottom end of the side baffle 2, and the assembly plate 8 is connected to the ground of the radiation chamber through fasteners. A conveying mechanism 9 is provided between adjacent side baffles 2, and a fixed plate 12 located above the conveying mechanism 9 is provided between the side baffles 2. The fixed plate 12 is assembled and connected with the side baffle 2, and a movable baffle 13 connected to the linear reciprocating motion mechanism is provided in the fixed plate 12, wherein the linear reciprocating motion mechanism can adopt a screw transmission mechanism, and the screw transmission mechanism is provided at both ends of the fixed plate 12 to make the movable baffle 13 move up and down, and a distance detection component vertically facing the conveying mechanism 9 is provided on the top plate 3;

[0025] Further, the distance detection assembly includes a mounting arm 14 fixed to the top plate 3, and a distance sensor 15 is mounted at one end of the bottom of the mounting arm 14 away from the side baffle 2, so that the distance detection is faster, so that the movable baffle 13 can be adjusted up and down;

[0026] A carrying plate 16 assembled and connected to the side baffle 2 is provided below the conveying mechanism 9, and a supporting plate 17 abutting against the conveying mechanism 9 is elastically connected to the top of the carrying plate 16;

[0027] Furthermore, a mounting groove 18 is provided on the top of the carrier plate 16, and a symmetrically arranged gas spring 19 is movably connected between the inner wall of the mounting groove 18 and the support plate 17; both ends of the gas spring 19 are respectively connected to the inner wall of the mounting groove 18 and the support plate 17 through a connecting seat, and when the gas spring 19 is naturally stretched, the support plate 17 is located at the highest point and fits with the bottom of the conveying mechanism 9 at this time, thereby shielding the gap between the conveying mechanism 9 and the carrier plate 16;

[0028] Specifically, by setting the conveying mechanism 9, the distance detection component, the carrying plate 16, the support plate 17, the fixed plate 12 and the movable baffle 13, when the conveying mechanism 9 is working, the distance sensor 15 is used to measure the distance between the product on the conveying mechanism 9 and the top plate 3, and then the distance between the product and the fixed plate 12 is known, so that the movable baffle 13 moves up and down to fill the gap between the conveying mechanism 9 and the fixed plate 12, effectively reducing the diffusion path of X-rays above the conveying mechanism 9, and cooperating with the support plate 17 elastically connected to the carrying plate 16, so that the gap between the conveying mechanism 9 and the carrying plate 17 is blocked. Compared with the prior art, if the conveying mechanism 9 is too low, by applying pressure to the support plate 17, the support plate 17 is moved downward so as to be placed in the conveying mechanism 9. If the conveying mechanism 9 is too high, it can also cooperate with the support plate 17 in a natural state to fill the gap between the conveying mechanism 9 and the carrying plate 16, effectively reducing the diffusion path of X-rays below the conveying mechanism 9, which not only improves the shielding performance of X-rays, but also can adapt to a variety of conveying mechanisms 9 of different heights at the same time, thereby enhancing flexibility.

[0029] The support plate 17 is connected with a shielding member located between the side of the conveying mechanism 9 and the side baffle 2, and the shielding member is located at the inner and outer sides of the side baffle 2, thereby providing effective support for the shielding member;

[0030] Further, the shielding member includes a protective cover 21 fixed to the support plate 17 through the connecting arm 1, and guide rods 22 are horizontally fixed to the upper and lower ends of the protective cover 21. A shield plate 20 that abuts against the conveying mechanism 9 is movably sleeved on the guide rod 22, and a spring 23 that is respectively connected to the protective cover 21 and the shield plate 20 at both ends is sleeved on the guide rod 22. Under the elastic force generated by the spring 23, the shield plate 20 cooperates with the guide rod 22 to move along the guide rod 22, thereby adjusting the distance between the shield plate 2 and the side baffle 2 to match the width of the conveying mechanism 9;

[0031] Specifically, when the spring 23 is in a naturally stretched state, the distance between the conveying mechanism 9 and the edge of the side baffle 2 is the largest, that is, the width of the conveying mechanism 9 is the smallest.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shielding device for protecting an electron beam radiation chamber, comprising a side baffle (2) and a top plate (3) arranged in the radiation chamber, characterized in that: The side baffles (2) and the top plate (3) are detachably connected, an assembly plate (8) is provided at the bottom end of the side baffles (2), a conveying mechanism (9) is provided between adjacent side baffles (2), a fixed plate (12) located above the conveying mechanism (9) is provided between the side baffles (2), a movable baffle (13) connected to the linear reciprocating motion mechanism is provided inside the fixed plate (12), a distance detection component facing the conveying mechanism (9) is provided on the top plate (3), a bearing plate (16) connected to the side baffles (2) is provided below the conveying mechanism (9), a support plate (17) abutting against the conveying mechanism (9) is elastically connected to the top of the bearing plate (16), and a shielding member located between the side of the conveying mechanism (9) and the side baffles (2) is connected to the support plate (17).

2. The shielding device for protecting an electron beam irradiation room according to claim 1, characterized in that: A lining plate (4) inserted into the side baffle plate (2) is fixed to the bottom of the top plate (3), and a limiting component is inserted between the side baffle plate (2) and the lining plate (4), and the limiting component includes a connecting rod (5) and a limiting sleeve (6).

3. A shielding device for protecting an electron beam irradiation room according to claim 2, characterized in that: The lining plate (4) and the side baffle plate (2) are both provided with a plug hole (7) matching the connecting rod (5), and both ends of the connecting rod (5) are threadedly connected to a limiting sleeve (6), and the limiting sleeve (6) is L-shaped.

4. The shielding device for protecting an electron beam irradiation room according to claim 1, characterized in that: The distance detection component comprises a mounting arm (14) fixed to the top plate (3), and a distance sensor (15) is mounted on the bottom of the mounting arm (14).

5. The shielding device for protecting an electron beam irradiation room according to claim 1, characterized in that: A mounting groove (18) is provided on the top of the bearing plate (16), and a symmetrically arranged gas spring (19) is movably connected between the inner wall of the mounting groove (18) and the support plate (17).

6. The shielding device for protecting an electron beam irradiation room according to claim 1, characterized in that: The shielding member comprises a protective cover (21) fixed to a support plate (17) via a connecting arm (1), guide rods (22) being horizontally fixed at upper and lower ends of the protective cover (21), a shielding plate (20) being movably sleeved on the guide rod (22) and abutting against a conveying mechanism (9), and a spring (23) being sleeved on the guide rod (22) and having two ends respectively connected to the protective cover (21) and the shielding plate (20).

7. The shielding device for protecting an electron beam irradiation room according to claim 1, characterized in that: The top plate (3) is provided with a mounting hole (10), a buffer sleeve (11) is embedded in the mounting hole (10), and the buffer sleeve (11) is made of EVA plastic foam.

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