Self-locking and unlocking of a sealed container
The self-locking and unlocking sealed container design utilizes a compression spring and a flared bevel structure to automatically lock and unlock the upper and lower covers, solving the problems of poor sealing and complex operation in existing technologies, and ensuring the safety and convenience of radioactive material transfer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AEROSUN CORP
- Filing Date
- 2022-10-26
- Publication Date
- 2026-05-15
AI Technical Summary
Existing radioactive material transfer devices are inadequate in terms of sealing and operational safety. Current technical solutions are complex in structure and have poor sealing, making it difficult to ensure the safe transfer of radioactive materials.
A self-locking and unlocking sealed container was designed. The upper and lower covers are automatically locked and unlocked by a compression spring and a flared inclined surface structure. The wedge action of the spring pin ensures the seal and simplifies the operation process.
It achieves convenient operation and efficient sealing of the sealed container, avoids leakage of radioactive materials, and improves safety and ease of use.
Smart Images
Figure CN115798764B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a sealed transfer device for radioactive materials, and more particularly to a self-locking and unlocking sealed container, belonging to the technical field of transfer devices. Background Technology
[0002] In spent fuel reprocessing, radioactive materials often need to be transferred. To prevent leakage of radioactive materials and direct human handling during transfer, the transfer equipment must have ideal sealing and automated opening and closing of the cover.
[0003] A search reveals that Chinese patent document CN201210356649.8 discloses a multi-point locking double-cover sealing device, including an upper door assembly, a lower door assembly, and a special tool. Each of the upper and lower door assemblies includes a circular door panel, a door seat, and multiple sets of locking and unlocking devices. The door panel is housed within the door seat, and the multiple sets of locking and unlocking devices are evenly arranged around the center of the door panel. The lower end of the latch of the upper door locking and unlocking device has a groove, and the latch passes through the lower door panel to engage with the locking shaft of the lower door locking and unlocking device. The lower end of the locking shaft is connected to a retaining plate that rotates with the locking shaft. By rotating the locking shaft with the special tool, the retaining plate is screwed into or out of the groove on the lower door seat, separating the lower door seat from the lower door panel; simultaneously, the latch is connected to the lower door panel, achieving engagement of the upper and lower door panels. Although this technical solution provides reliable sealing, relying on the upper and lower door assemblies and the special tool to achieve multi-point locking and sealing of the upper and lower door panels is not only structurally complex but also requires multiple manual rotations of the locking shaft, increasing the risk to operators.
[0004] Furthermore, Chinese patent document CN201810621811.1 discloses an automatic unlocking and locking mechanism for a barrel lid, comprising an upper flange disposed on the barrel body and an annular groove disposed on the transfer barrel lid; the upper flange is provided with a communicating radial hole and an axial hole; a stepped shaft capable of moving axially along the axial hole is disposed within the axial hole; a locking component capable of moving along the radial hole toward the annular groove as the stepped shaft moves is disposed within the radial hole; the annular groove is provided with an inclined surface or a spherical surface that facilitates the locking component's exit from the annular groove. Although this technical solution can achieve automatic unlocking and locking of the barrel lid by means of the stepped shaft and locking component structure, the locking state depends on the pressure of the docking device 5, resulting in poor sealing and difficulty in ensuring that leakage of radioactive materials is avoided. Summary of the Invention
[0005] The purpose of this invention is to provide a self-locking and unlocking sealed container with good sealing performance, which is convenient to operate and ensures safe use, in order to address the shortcomings of the existing technology.
[0006] The basic technical solution of the self-locking and unlocking sealed container of the present invention is as follows: the container body consists of a cylindrical barrel body and a barrel bottom, the top of the barrel body is sealed with a lower cover component, and an upper cover component is added on the lower cover component;
[0007] A lifting rod extends upward from the middle of the lower cover component and passes through the central hole of the upper cover component. The lifting rod is fitted with an upper cover gripper that holds the upper cover component, and a lower cover gripper extends from the upper end. A compression spring is installed between the upper cover gripper and the lower cover gripper.
[0008] The upper end of the barrel body forms an outwardly flared flange, and the lower cover component has a spring pin that tends to extend outward at the position of the lower end of the flange. The upper cover component has a flared bevel at the position of the spring pin.
[0009] When the lower cover component is closed, the compression spring extends, positioning the upper cover component close to the lower cover component. The flared bevel restrains the spring pin, pushing it radially inward and wedging it into the lower part of the flange, thus pressing the lower cover component against the barrel body. When the upper cover handle is lifted, the compression spring retracts, allowing the upper cover component to move away from the lower cover component. The flared bevel loses its restraint on the spring pin, allowing it to extend outward and disengage from the lower part of the flange, thus detaching the lower cover component from the barrel body.
[0010] Therefore, by employing this invention, the container body can be easily sealed by utilizing the action of the compression spring and the gravity of the upper and lower cover components. When opening, simply operating the upper cover handle automatically unlocks and separates the lower cover component from the container body, which is extremely convenient. Furthermore, the flared bevel and spring pin structure provide a wedging effect, ensuring a reliable seal and effectively preventing the leakage of radioactive materials, thus ensuring safe use.
[0011] Furthermore, a sleeve is inlaid at the position of the cover opening of the lower cover component corresponding to the flange, and a limiting screw plug is screwed into the threaded hole of the sleeve. The center hole of the limiting screw plug and the spring pin form a horizontal moving pair, and the limiting screw plug constrains the outer limit position of the expansion ring in the middle of the spring pin.
[0012] Furthermore, a clamping spring is fitted onto the spring pin between the expanding ring and the bottom of the hole in the sleeve.
[0013] Furthermore, the inner diameter of the upper cover component is a stepped shape that tapers at the lower end, and the outer diameter of the lower cover component is a stepped shape that tapers at the lower end. The upper and lower inner diameters of the upper cover component are respectively adapted to the corresponding outer diameters of the lower cover component.
[0014] Furthermore, the upper cover component is formed by fastening the spokes and the cover ring together with fasteners.
[0015] Furthermore, the inner diameter of the lower cover component matches the outer diameter of the upper part of the barrel.
[0016] Furthermore, the lower cover component is fitted with a sealing ring that fits snugly against the upper surface of the barrel.
[0017] Furthermore, the upper end of the boom is fixed to the lower cover gripper by a center screw screwed into its internal thread.
[0018] Furthermore, the lower end of the lower cover gripper has a spring guide hole, and the clamping spring extends into the spring guide hole and is positioned therein. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0020] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention.
[0021] Figure 2 yes Figure 1 A schematic diagram of the planar structure of the embodiment.
[0022] Figure 3 yes Figure 2 A partially enlarged schematic diagram of the locked state.
[0023] Figure 4 yes Figure 2 A magnified schematic diagram of the unlocked state.
[0024] In the picture:
[0025] 1-Upper cover assembly; 2-Lower cover assembly; 3-Container body; 4-Bottom of the barrel; 5-Body of the barrel; 6-Lid ring; 7-Spoke plate; 8-Upper cover gripper; 9-Connecting screw; 10-Pressure pin assembly; 11-Sealing ring; 12-Lower cover; 13-Hanging rod; 14-Pressure spring; 15-Center screw; 16-Lower cover gripper; 17-Spring pin; 18-Limiting plug; 19-Sleeve; 20-Tightening spring. Detailed Implementation
[0026] The self-locking and unlocking sealed container in this embodiment is as follows: Figure 1 and Figure 2As shown, the container body 3 is formed by sealing and welding a cylindrical barrel body 5 and a barrel bottom 4. A lower cover component 2 is sealed to the top of the barrel body 5. Specifically, a sealing ring 11 is embedded and fits tightly against the upper surface of the barrel body 5, and an upper cover component 1 is placed on top of the lower cover component 2. The upper cover component 1 is formed by connecting a spoke plate 7 and a cover ring 6 using connecting screws 9. The inner diameter of the lower cover component 2 matches the outer diameter of the upper end of the barrel body 5. The inner diameter of the upper cover component 1 is a stepped shape with a narrowing lower end, and the outer diameter of the lower cover component 2 is a stepped shape with a narrowing lower end. The upper and lower inner diameters of the upper cover component 1 are respectively adapted to the corresponding outer diameters of the lower cover component 2, thus providing good guidance and preventing separation.
[0027] The lower cover component 2 is fixedly connected to the middle of a lifting rod 13 that extends upward through the central hole of the upper cover component 1. The lifting rod 13 is fitted with an upper cover gripper 8 that holds the upper cover component 1, and has a lower cover gripper 16 extending from its upper end. Specifically, the upper end of the lifting rod 13 is fixedly connected to the lower cover gripper 16 by a central screw 15 screwed into its internal thread. A compression spring 14 is installed between the upper cover gripper 8 and the lower cover gripper 16. The lower end of the lower cover gripper 16 has a spring guide hole, into which the compression spring 14 extends and is positioned.
[0028] The upper end of the barrel body 5 forms an outwardly flared flange 5-1. The lower cover component 2 has a spring pin 17 that tends to extend outwards at the lower end of the flange 5-1. For details, please refer to [link to specific structure]. Figure 3 , Figure 4 The lower cover component 2 has a sleeve 19 installed at the position corresponding to the flange 5-1. A limiting plug 18 is screwed into the threaded hole of the sleeve 19. The center hole of the limiting plug 18 and the spring pins 17 with spherical caps at both ends form a horizontal sliding pair, constraining the outer limit position of the expanding ring 17-1 in the middle of the spring pin 17, thus forming a clamping pin assembly 10. A pressing spring 20 is fitted on the spring pin 17, located between the expanding ring 17-1 and the bottom of the hole in the sleeve 19, thus tending to extend outwards. The upper cover component 1 has a flared bevel 1-1 at the position corresponding to the spring pin 17.
[0029] In use, when the upper and lower cover components 2 are closed, the compression spring 14 extends, causing the upper cover component 1 to be positioned close to the lower cover component 2, such as... Figure 3As shown, the flared bevel 1-1 pushes the spring pin 17 radially inward, compressing the top spring 20, causing the inner end of the spring pin 17 to wedge into the lower part of the flange 5-1. The lower cover component 2 then presses against the barrel body 5, achieving self-locking of the sealed container in this embodiment by the weight of the upper and lower cover components. Furthermore, the flared bevel of the upper cover component has a double wedging effect on the spring pin and the spring pin's spherical crown, thus ensuring a very reliable seal and effectively preventing the leakage of radioactive materials, ensuring safe use. When it is necessary to open, the upper cover handle 8 is lifted, the compression spring 14 retracts, and the upper cover component 1 moves away from the lower cover component 2, causing it to lose its pressing effect on the barrel body 5. The flared bevel loses its constraint on the spring pin 17, causing it to extend and reset under the action of the top spring 20. The inner end of the spring pin 17 disengages from the lower part of the flange 5-1, and the lower cover component 2 can be lifted away from the barrel body as needed, opening the upper part of the container body.
[0030] Experiments show that this embodiment has the following outstanding advantages:
[0031] 1) Simply operate the upper cover gripper to automatically lock and seal the lower cover component onto the container, which is very convenient.
[0032] 2) The wedge-tightening structure of the clamping pin assembly reliably ensures the airtightness of the container in the locked state, effectively preventing the leakage of radioactive materials.
[0033] 3) The gripper and gripper head designs correspond to the upper and lower cover components respectively, which facilitates hoisting and increases applicability.
[0034] In addition to the embodiments described above, the present invention may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.
Claims
1. A self-locking and unlocking sealed container, comprising a container body consisting of a cylindrical barrel and a barrel bottom, characterized in that: The top sealing cover of the barrel is fitted with a lower cover component, and an upper cover component is added on the lower cover component; A lifting rod extends upward from the middle of the lower cover component and passes through the central hole of the upper cover component. The lifting rod is fitted with an upper cover gripper that holds the upper cover component, and a lower cover gripper extends from the upper end. A compression spring is installed between the upper cover gripper and the lower cover gripper. The upper end of the barrel body forms an outwardly flared flange, and the lower cover component has a spring pin that tends to extend outward at the position of the lower end of the flange. The upper cover component has a flared bevel at the position of the spring pin. When the lower cover component is closed, the compression spring extends, positioning the upper cover component close to the lower cover component. The flared bevel restrains the spring pin, pushing it radially inward and wedging it into the lower part of the flange, thus pressing the lower cover component against the barrel body. When the upper cover handle is lifted, the compression spring retracts, allowing the upper cover component to move away from the lower cover component. The flared bevel loses its restraint on the spring pin, allowing it to extend outward and disengage from the lower part of the flange, thus detaching the lower cover component from the barrel body.
2. The self-locking and unlocking sealed container according to claim 1, characterized in that: The cover opening of the lower cover component is fitted with a sleeve at the position corresponding to the flange. A limiting screw plug is screwed into the threaded hole of the sleeve. The center hole of the limiting screw plug and the spring pin form a horizontal moving pair. The limiting screw plug restricts the outer limit position of the expansion ring in the middle of the spring pin.
3. The self-locking and unlocking sealed container according to claim 2, characterized in that: A clamping spring is fitted onto the spring pin between the expanding ring and the bottom of the hole in the sleeve.
4. The self-locking and unlocking sealed container according to claim 3, characterized in that: The inner diameter of the upper cover component is stepped with a narrowing lower end, and the outer diameter of the lower cover component is stepped with a narrowing lower end. The upper and lower inner diameters of the upper cover component are respectively adapted to the corresponding outer diameters of the lower cover component.
5. The self-locking and unlocking sealed container according to claim 4, characterized in that: The upper cover component is formed by fastening the spokes and the cover ring together with fasteners.
6. The self-locking and unlocking sealed container according to claim 5, characterized in that: The inner diameter of the lower cover component matches the outer diameter of the upper part of the barrel.
7. The self-locking and unlocking sealed container according to claim 6, characterized in that: The lower cover component is fitted with a sealing ring that fits snugly against the upper surface of the barrel.
8. The self-locking and unlocking sealed container according to claim 7, characterized in that: The upper end of the boom is fixed to the lower cover gripper by a center screw screwed into its internal thread.
9. The self-locking and unlocking sealed container according to claim 8, characterized in that: The lower end of the lower cover gripper has a spring guide hole, and the clamping spring extends into the spring guide hole and is positioned therein.