A nuclear power plant radioactive waste processing device

Abstract

The utility model relates to a radioactive waste treatment technical field especially relates to a nuclear power plant radioactive waste treatment device, its technical scheme includes the decay box that carries out the treatment to radioactive waste and the box cover rotationally connected on the decay box, the utility model discloses the cooperation of anti -skid mechanism, guide mechanism and treading structure etc. structure, under normal circumstances through universal sheave and handle decay box is removed conveniently. When needing to open the box cover, only need to tread the treading board in treading groove, its drive connecting rod down pressure resistance block rotation groove rotation rod, make resistance block along the positioning sliding hole of support embrace block vertical downshift, positioning dowel rod synchronous stretch reset spring simultaneously. Downshift resistance block promotes anti -skid resistance board contact ground, and anti -skid convex strip enhances friction force fixed box, and resistance block end inserts into the buffer groove of anti -skid resistance board, and compression buffer spring produces buffer force, guarantees treading board to have enough downshift stroke to open the box cover smoothly, thoroughly avoid the risk of falling down caused by the box body sliding.

Description

Technical Field

[0001] This utility model relates to the field of radioactive waste treatment technology, and in particular to a radioactive waste treatment device for nuclear power plants. Background Technology

[0002] Nuclear power plant radioactive waste refers to waste generated during the operation of nuclear power plants that contains radioactive nuclides whose activity concentration or total radioactivity exceeds national limits. It cannot be directly discharged and requires specialized treatment to avoid environmental pollution and harm to human health. Decay chambers are one of the core processing devices for gaseous radioactive waste in nuclear power plant radioactive waste treatment facilities. Their core function is to utilize the natural decay characteristics of radioactive nuclides to reduce the radioactive nuclides (such as some short-lived nuclides) in gaseous waste to meet discharge or subsequent treatment standards. It is a key unit in the gaseous radioactive waste purification process and therefore clearly falls under the category of nuclear power plant radioactive waste treatment facilities.

[0003] In existing technologies, some decay chambers employ a foot-operated opening mechanism, allowing staff to open the lid simply by stepping on it, eliminating the need for direct hand contact and effectively reducing the potential risk of radiation exposure. To enhance mobility, these decay chambers are typically equipped with casters at the bottom for easy movement. However, if the casters are not secured beforehand when staff perform the foot-operated opening operation, the chamber may shift its center of gravity due to the operation, causing it to slide along the ground under gravity. This could result in staff slipping and falling, leading to a safety accident. Utility Model Content

[0004] The purpose of this invention is to address the problem that, in the existing technology, although the foot-operated decay box with pulleys is easy to move, if the pulleys are not fixed when the staff steps on it to open the lid, the box is prone to slipping due to the shift of the center of gravity, which may cause the staff to fall and get hurt. The invention proposes a radioactive waste treatment device for nuclear power plants.

[0005] The technical solution of this utility model is as follows: A radioactive waste treatment device for nuclear power plants includes a decay box for treating radioactive waste and a box cover rotatably connected to the decay box. The bottom of the decay box is provided with a foot pedal for opening the box cover by stepping on it. The device also includes: a connecting rod fixedly connected to the foot pedal; an anti-slip mechanism is provided at the bottom of the decay box, which is used to open and close the box by moving the connecting rod after stepping on the foot pedal; and a guide mechanism installed at the bottom of the decay box to support the vertical movement of the anti-slip mechanism.

[0006] Optionally, the anti-slip mechanism includes a stop block located directly below the connecting rod. An anti-slip plate is fixedly connected to the end of the stop block away from the decay box. Positioning rods with their ends fixedly connected to the anti-slip plate are provided on both sides of the stop block. A return spring is fixedly connected to the end of each positioning rod away from the anti-slip plate. The end of each return spring away from the positioning rod is fixedly connected to the bottom end of the decay box. A buffer groove is provided on the anti-slip plate for the end of the stop block away from the decay box to be inserted. A pair of buffer springs are provided inside the buffer groove. One end of each buffer spring is fixedly connected to the inner wall of the buffer groove, and the other end of each buffer spring is fixedly connected to the stop block.

[0007] Optionally, the guiding mechanism includes support blocks fixedly connected to the bottom of the decay box on both sides of the abutment block. Each support block is provided with a positioning sliding hole for the positioning rod and the reset spring to pass through. The pair of support blocks are symmetrically arranged with the abutment block as the center.

[0008] Optionally, the two sides of the abutment block are also provided with grooves that are tightly engaged with the supporting block.

[0009] Optionally, the end of the abutment block away from the anti-slip plate is provided with a rotating groove, and a rotating rod that abuts against the connecting rod is rotatably connected inside the rotating groove.

[0010] Optionally, handles are fixedly connected to the outer walls on both sides of the top of the decay box, and a pair of handles are symmetrically arranged with the decay box as the center. The outer wall of the decay box is also provided with a prompt label.

[0011] Optionally, the bottom of the decay box is fixedly connected with multiple omnidirectional casters.

[0012] Optionally, the bottom of the decay box is also provided with a foot groove for the movement of the foot pedal and connecting rod.

[0013] In summary, this application includes at least one of the following beneficial technical effects: This invention utilizes a combination of anti-slip mechanism, guiding mechanism, and foot pedal structure. Under normal conditions, the decay chamber is easily moved via universal pulleys and a handle. When the chamber lid needs to be opened, simply step on the foot pedal in the foot pedal groove. This pedal drives the connecting rod to press down the rotating rod in the abutment block's rotating groove, causing the abutment block to move vertically downwards along the positioning sliding hole of the support block. Simultaneously, the positioning insert rod stretches the return spring. The downward-moving abutment block pushes the anti-slip plate to contact the ground. The anti-slip protrusions enhance friction and fix the chamber body. Furthermore, the end of the abutment block inserts into the buffer groove of the anti-slip plate, compressing the buffer spring to generate a buffering force. This ensures that the foot pedal has sufficient downward travel to smoothly open the chamber lid, completely avoiding the risk of slipping and falling due to the chamber body sliding, thus balancing mobility and operational safety. Attached Figure Description

[0014] Figure 1A schematic diagram of the first state structure of a radioactive waste treatment device for a nuclear power plant according to this utility model is provided. Figure 2 A schematic diagram of the first state structure of a radioactive waste treatment device for a nuclear power plant according to this utility model is provided. Figure 3 for Figure 2 A schematic diagram of the split structure; Figure 4 for Figure 3 A partial breakdown diagram.

[0015] Attached reference numerals: 1. Decay chamber; 11. Chamber lid; 12. Warning sign; 13. Foot groove; 14. Universal caster; 15. Handle; 2. Foot pedal; 21. Connecting rod; 3. Abutment block; 31. Rotating groove; 32. Rotating rod; 33. Positioning rod; 34. Return spring; 35. Anti-slip abutment plate; 351. Buffer groove; 352. Buffer spring; 36. Anti-slip ridge; 4. Support block; 41. Positioning sliding hole. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0017] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example like Figures 1 to 4As shown, this utility model proposes a radioactive waste treatment device for nuclear power plants, including a decay chamber 1 for treating radioactive waste and a cover 11 rotatably connected to the decay chamber 1. The cover 11 can be opened or closed by stepping on a pedal 2 to seal the internal space of the decay chamber 1, prevent the leakage of radioactive materials, and ensure the safety of the operating environment. The bottom of the decay chamber 1 is equipped with a pedal 2 for opening the cover 11 by stepping on it. The pedal 2 is fixedly connected to a connecting rod 21. When a worker steps on it, it moves the connecting rod 21, thereby triggering an anti-slip mechanism and opening the cover 11, avoiding direct hand contact and reducing the risk of radiation exposure. Handles 15 are fixedly connected to the outer walls on both sides of the top of the decay chamber 1. The handles 15 are for workers to grip and, together with universal casters 14, move the decay chamber 1, facilitating the adjustment of the device's position. A pair of handles 15 are symmetrically arranged around the decay chamber 1. The outer wall of the decay chamber 1 is also equipped with warning signs 12, indicating the presence of radioactive waste inside. These signs visually remind people of the potential danger of ionizing radiation, making them aware of the radioactive waste in their surroundings and thus increasing their vigilance. Several omnidirectional casters 14 are fixedly connected to the bottom of the decay chamber 1, enabling it to move flexibly and allowing staff to use the handles 15 to push the device to the designated processing position, improving equipment mobility. The bottom of the decay chamber 1 also has a foot groove 13 for the movement of the pedal 2 and connecting rod 21. The foot groove 13 provides space for the pedal 2 and connecting rod 21, limiting the stepping range of the pedal 2 and ensuring that the components can move normally when staff operate it. A connecting rod 21 is fixedly connected to the pedal 2. The connecting rod 21 is used to transmit the pedaling force of the pedal 2, drive the stop block 3 and related anti-slip mechanism components to move, and realize the linkage between anti-slip fixing and opening of the box cover 11.

[0023] Among them, such as Figures 2 to 4As shown, the bottom of the decay box 1 is equipped with an anti-slip mechanism. This mechanism is used to open and close the box by stepping on the pedal 2, which moves the connecting rod 21. The anti-slip mechanism includes a stop block 3 located directly below the connecting rod 21. The stop block 3 can move down along the positioning sliding hole 41 under the push of the connecting rod 21, pushing the anti-slip plate 35 to the ground for fixation, while transmitting force to assist in opening the box cover 11. Grooves are also provided on both sides of the stop block 3 to fit tightly with the supporting block 4. The end of the stop block 3 away from the decay box 1 is fixedly connected to the anti-slip plate 35. The anti-slip plate 35 enhances the friction with the ground through its own structure and anti-slip protrusions 36, preventing the decay box 1 from sliding during operation. A rotating groove 31 is provided at the end of the stop block 3 away from the anti-slip plate 35. The rotating groove 31 provides installation and rotation space for the rotating rod 32, allowing the rotating rod 32 to rotate flexibly and reducing the frictional resistance between the connecting rod 21 and the stop block 3 when pressed down. The rotating groove 31 is rotatably connected to a rotating rod 32 that abuts against the connecting rod 21. The rotating rod 32 converts the downward pressing force of the connecting rod 21 into a force that pushes the abutment block 3 downward, while reducing wear between components through rotation.

[0024] In addition, such as Figures 3 to 4 As shown, the abutment block 3 has positioning rods 33 on both sides, with their ends fixedly connected to the anti-slip plate 35. The positioning rods 33 are used to limit the movement direction of the abutment block 3 and the anti-slip plate 35, ensuring their vertical up-and-down movement, and at the same time, they work with the return spring 34 to reset the components. The end of the positioning rod 33 away from the anti-slip plate 35 is fixedly connected to the return spring 34. The return spring 34 is in a natural state under normal conditions. When stepped on, it is stretched by the positioning rod 33. After the pedal 2 is released, the elastic contraction drives the positioning rod 33, the abutment block 3, and the anti-slip plate 35 to reset, so that the device returns to a movable state. The end of the return spring 34 away from the positioning rod 33 is fixedly connected to the bottom end of the decay box 1. The anti-slip plate 35 has a buffer groove 351 for the end of the abutment block 3 away from the decay box 1 to be inserted. The buffer groove 351 provides installation space for the buffer spring 352 and provides additional stroke for the abutment block 3 to move down, ensuring the effectiveness of the pedal 2 operation. The buffer groove 351 is equipped with a pair of buffer springs 352. The function of the buffer springs 352 is to compress the abutment 3 when it is inserted into the buffer groove 351, thereby generating a buffering force to prevent damage from hard contact between the parts, and at the same time to ensure that the pedal 2 has enough downward distance to open the cover 11. One end of the buffer spring 352 is fixedly connected to the inner wall of the buffer groove 351, and the other end of the buffer spring 352 is fixedly connected to the abutment 3.

[0025] It is worth noting that, such as Figures 2 to 4As shown, a guide mechanism is installed at the bottom of the decay chamber 1 to support the vertical movement of the anti-slip mechanism. The guide mechanism includes support blocks 4 fixedly connected to both sides of the abutment block 3 at the bottom of the decay chamber 1. The support blocks 4 provide support for the positioning rod 33 and the return spring 34, and limit the movement path of the positioning rod 33 through the positioning sliding hole 41 to ensure the vertical movement of the anti-slip mechanism. Each support block 4 has a positioning sliding hole 41 for the positioning rod 33 and the return spring 34 to pass through. The positioning sliding hole 41 limits the movement direction of the positioning rod 33 and guides the anti-slip mechanism to move up and down in the vertical direction, ensuring the stability of the anti-slip mechanism. A pair of support blocks 4 are symmetrically arranged with the abutment block 3 as the center.

[0026] In this embodiment, when using the radioactive waste treatment device of a nuclear power plant, the decay chamber 1 can be moved flexibly under normal conditions via the universal casters 14 at the bottom, and staff can push the device to the designated position using the handle 15. When it is necessary to open the chamber cover 11, staff step on the foot pedal 2 in the foot pedal groove 13, and the foot pedal 2 drives the connecting rod 21 to move downward.

[0027] During the downward movement of the connecting rod 21, it abuts against the rotating rod 32 in the rotating groove 31 of the abutment block 3, pushing the abutment block 3 to move vertically downward along the positioning sliding hole 41 of the supporting block 4. At the same time, it drives the positioning insertion rod 33 to move downward synchronously, and the return spring 34 on the positioning insertion rod 33 is stretched and lengthened. The downward movement of the abutment block 3 will push the anti-slip plate 35 to immediately contact the ground. The anti-slip protrusions 36 on the lower surface of the anti-slip plate 35 enhance the friction with the ground, thereby fixing the device and preventing the box from sliding when stepped on.

[0028] The end of the abutment 3 is inserted into the buffer groove 351 of the anti-slip plate 35, and the buffer spring 352 is compressed to generate a buffering force, ensuring that the pedal 2 has enough downward distance to open the box cover 11. After the operation is completed, the pedal 2 is released, and the elastic force of the return spring 34 drives the positioning rod 33 and the abutment 3 to return to their original positions. The anti-slip plate 35 is lifted off the ground, and the device returns to its movable state, which is quick and convenient.

[0029] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A radioactive waste treatment device for a nuclear power plant, comprising a decay chamber (1) for treating radioactive waste and a cover (11) rotatably connected to the decay chamber (1), wherein the bottom of the decay chamber (1) is provided with a foot pedal (2) for opening the cover (11) by stepping on it, characterized in that, Also includes: A connecting rod (21) is fixedly connected to the foot pedal (2). The bottom of the decay box (1) is provided with an anti-slip mechanism. The anti-slip mechanism is used to switch on and off after the connecting rod (21) is moved by stepping on the foot pedal (2). A guide mechanism is installed at the bottom of the decay box (1) to support the anti-slip mechanism for vertical movement; The anti-slip mechanism includes a stop block (3) located directly below the connecting rod (21). An anti-slip plate (35) is fixedly connected to one end of the stop block (3) away from the decay box (1). Positioning rods (33) with their ends fixedly connected to the anti-slip plate (35) are provided on both sides of the stop block (3). A return spring (34) is fixedly connected to one end of the positioning rod (33) away from the anti-slip plate (35). The return spring (34) with its end away from the positioning rod (33) is fixedly connected to the bottom end of the decay box (1). A buffer groove (351) is provided on the anti-slip plate (35) for the end of the stop block (3) away from the decay box (1) to be inserted. A pair of buffer springs (352) are provided inside the buffer groove (351). One end of the buffer spring (352) is fixedly connected to the inner wall of the buffer groove (351), and the other end of the buffer spring (352) is fixedly connected to the stop block (3). The guiding mechanism includes support blocks (4) fixedly connected to the bottom of the decay box (1) on both sides of the abutment block (3). Each support block (4) is provided with a positioning sliding hole (41) through which the positioning rod (33) and the reset spring (34) pass. A pair of support blocks (4) are symmetrically arranged with the abutment block (3) as the center. The abutment block (3) has a rotating groove (31) at one end away from the anti-slip abutment plate (35), and a rotating rod (32) that abuts against the connecting rod (21) is rotatably connected inside the rotating groove (31).

2. The radioactive waste treatment device for nuclear power plants according to claim 1, characterized in that, The abutment block (3) also has grooves on both sides that are tightly engaged with the supporting block (4).

3. A radioactive waste treatment device for nuclear power plants according to claim 1, characterized in that, The decay box (1) has handles (15) fixedly connected to the outer walls on both sides of the top. The pair of handles (15) are symmetrically arranged with the decay box (1) as the center. The outer wall of the decay box (1) is also provided with a prompt sign (12).

4. A radioactive waste treatment device for nuclear power plants according to claim 1, characterized in that, The decay box (1) is fixedly connected to a number of universal pulleys (14).

5. A radioactive waste treatment device for nuclear power plants according to claim 1, characterized in that, The bottom of the decay box (1) is also provided with a foot groove (13) for the foot pedal (2) and connecting rod (21) to move.

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