High performance air pressure sliding shield door
Patent Information
- Application Number
- CN202522764329.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-12-26
AI Technical Summary
屏蔽门作为PET-MRI屏蔽机房的核心关键部件，其性能直接决定了屏蔽室的电磁屏蔽效能与射线屏蔽效能，是保障诊断设备稳定运行、获取高清精准影像的重要前提——一旦屏蔽门存在缝隙泄漏问题，不仅会导致外部电磁干扰侵入机房，还会造成设备射线外泄，既影响影像分辨率、产生伪影干扰诊断结果，也可能危害医护人员与患者的健康安全
通过一体化对开屏蔽组件设计，将电磁屏蔽与射线屏蔽功能集成于第一屏蔽门和第二屏蔽门，配合电动推杆驱动的铰接杆传动机构，实现两扇门体同步开闭。相比现有分离式双门设计，人员及设备进出时无需分别操作两扇屏蔽门，开关门时间显著缩短，有效减少诊疗准备耗时，尤其适配急诊、批量检查等高效诊疗场景，同时降低医护人员操作负担，间接提升医疗服务质量；
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Figure CN224885464U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shielding door technology, and more specifically, to a high-performance pneumatic swing shielding door. Background Technology
[0002] With the rapid development of precision medicine technology, integrated PET-MRI diagnostic equipment, as a high-end medical device integrating functional metabolic imaging and anatomical imaging, is increasingly widely used in fields such as early tumor screening and diagnosis of neurological diseases, resulting in explosive growth in market demand. The shielding door, as a core component of the PET-MRI shielded room, directly determines the electromagnetic and radiation shielding effectiveness of the room. It is a crucial prerequisite for ensuring the stable operation of diagnostic equipment and obtaining high-definition, accurate images. If the shielding door has gaps or leaks, it will not only allow external electromagnetic interference to enter the room but also cause radiation leakage, affecting image resolution, producing artifacts that interfere with diagnostic results, and potentially endangering the health and safety of medical staff and patients.
[0003] However, the existing swing shielding doors used in PET-MRI shielding rooms have two major drawbacks: First, the "separate double-door" design requires a separate swing electromagnetic shielding door and a swing (or sliding) X-ray shielding door. Personnel and equipment must open and close both doors sequentially, making the process cumbersome and repetitive. This not only consumes a significant amount of diagnostic preparation time and reduces diagnostic efficiency but also increases the workload of medical staff, potentially delaying treatment, especially in emergency situations. Second, the shielding sealing structure uses traditional compression-type finger springs, whose shielding effectiveness depends entirely on the degree of deformation and compression of the springs. To ensure a seal, the springs must be under high-intensity compression for extended periods. This not only results in high resistance and difficulty in opening and closing the door but also causes the springs to lose elasticity rapidly. After long-term use, plastic deformation can easily occur, significantly reducing the contact pressure between the door and the frame. Typically, the effective service life does not exceed 3 years. The failure of the shielding structure will directly lead to a decline in the shielding effectiveness of the shielding room, which in turn will result in blurred images, reduced resolution, and increased artifacts in MRI equipment, seriously affecting diagnostic accuracy. It may even increase maintenance costs due to insufficient equipment operation stability, thus restricting the clinical application value of high-end medical equipment. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-performance pneumatic swing shielding door, which aims to solve the problems mentioned in the background art.
[0005] This utility model provides the following technical solution: a high-performance pneumatic swing shielding door, including a partition, wherein the partition is provided with a double-swing shielding assembly; The split shielding assembly includes a first shielding door disposed in the middle of the partition, a second shielding door disposed on one side of the first shielding door, the first shielding door and the second shielding door being disposed opposite each other, and sealing frames being disposed on the outer sides of the first shielding door and the second shielding door respectively, the sealing frames being squeezed together by the displacement of the first shielding door and the second shielding door to fill the gaps.
[0006] Optionally, in one possible implementation, the split shielding assembly further includes a vertical plate disposed on the top of the partition, a hinge seat fixedly disposed on one side of the vertical plate, a first hinge rod hinged to the hinge seat, a second hinge rod hinged to the bottom end of the first hinge rod, and a third hinge rod hinged to the top end of the first hinge rod. Optionally, in one possible implementation, one end of the second hinge rod and the third hinge rod are respectively hinged to a limiting block, and each of the limiting blocks is respectively installed on the top of the first shielding door and the second shielding door by bolts. The first shielding door and the second shielding door are displaced by the deflection of the third hinge rod, the second hinge rod and the first hinge rod. One end of the upright plate is hinged to an electric push rod, the output end of the electric push rod extends to the first hinge rod and is hinged to the first hinge rod. A plurality of sliders are slidably connected to the bottom of the upright plate, and the bottom end of each slider is respectively fixed to the first shielding door and the second shielding door. The sliders guide and limit the displacement of the first shielding door and the second shielding door. The technical effects and advantages of this utility model are as follows: By integrating electromagnetic and radiation shielding functions into the first and second shielding doors through an integrated double-door shielding component design, and using an electric push rod driven hinged rod transmission mechanism, the two doors can open and close synchronously. Compared with the existing separate double-door design, personnel and equipment do not need to operate the two shielding doors separately when entering and exiting, significantly shortening the door opening and closing time, effectively reducing the time spent on preparation for diagnosis and treatment, and is especially suitable for high-efficiency diagnosis and treatment scenarios such as emergency and batch examinations. At the same time, it reduces the operational burden on medical staff and indirectly improves the quality of medical services. A sealing frame composed of high-pressure airbags replaces traditional finger-shaped springs. When the door is closed, the high-pressure airbags deform elastically through compression, effectively filling gaps between door panels and between the door and the edge of the recess, forming a seamless sealing structure. This results in more stable and durable electromagnetic and radiation shielding effectiveness. Simultaneously, the high-pressure airbags possess excellent elastic recovery properties, avoiding the elastic decay and plastic deformation problems caused by long-term compression of finger-shaped springs. This effectively solves the problem of reduced shielding effectiveness caused by sealing structure failure in existing shielding doors, reducing image artifacts and resolution degradation at the source. This ensures that PET-MRI equipment is always in optimal operating condition, providing reliable support for accurate diagnosis. Attached Figure Description
[0007] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.
[0008] Figure 1 This is a front view of the overall structure of this utility model.
[0009] Figure 2 This is a schematic diagram of the split shielding assembly of this utility model.
[0010] Figure 3 This is a schematic diagram of the first shielding door, the second shielding door, the hinge seat, the first hinge rod, the second hinge rod, the third hinge rod, and the sealing frame of this utility model.
[0011] Figure 4 This is a schematic diagram of the partition, upright plate, electric push rod, slider and notch of this utility model.
[0012] Figure 5 This utility model Figure 1 Exploded view.
[0013] The attached diagram is labeled as follows: 1. Partition; 2. First shielding door; 3. Second shielding door; 4. Hinge seat; 5. First hinge rod; 6. Second hinge rod; 7. Third hinge rod; 8. Limiting block; 9. Sealing frame; 10. Electric push rod; 11. Vertical plate; 12. Sliding block; 13. Notch. Detailed Implementation
[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0015] Example 1 This embodiment discloses a high-performance pneumatic swing shielding door, which is mainly used in the shielding room of PET-MRI integrated diagnostic equipment. It aims to solve the problems of existing shielding doors that require opening and closing two doors separately, which are cumbersome to operate and whose shielding effectiveness is easily reduced.
[0016] like Figures 1 to 5 As shown, this high-performance pneumatic swing shielding door includes a partition 1, with a recess 13 extending through the partition 1. The recess 13 provides a passage for personnel and equipment to enter and exit. A split shielding component is provided on one side of the surface of the recess 13 to realize the opening, closing and shielding functions of the recess 13.
[0017] The split-opening shielding assembly includes a first shielding door 2, a second shielding door 3, a vertical plate 11, a hinge base 4, a first hinge rod 5, a second hinge rod 6, a third hinge rod 7, a limiting block 8, a sealing frame 9, an electric push rod 10, and a slider 12. The first shielding door 2 and the second shielding door 3 are arranged opposite each other, and both are adapted to the size of the recess 13. When they are close to each other, they can completely close the recess 13; when they are far apart, the recess 13 is open.
[0018] like Figure 3 and Figure 5 As shown, sealing frames 9 are fixedly installed on the outer sides of the first shielding door 2 and the second shielding door 3 respectively. The sealing frame 9 is composed of several high-pressure airbags. Each high-pressure airbag surrounds the edge of the first shielding door 2 and the second shielding door 3 respectively. When the first shielding door 2 and the second shielding door 3 are closed, the sealing frames 9 on both sides are squeezed against each other, which can fully fill the gap between the two doors and the gap between the door and the edge of the recess 13, ensuring the airtightness of the shielding.
[0019] Example 2 Based on Example 1, this example discloses a high-performance pneumatic swing shielded door, such as... Figure 2 and Figure 4 As shown, a vertical plate 11 is fixedly installed on the top of the partition 1. The vertical plate 11 is arranged along the length direction of the recess 13. A hinge seat 4 is fixedly welded to one side of the vertical plate 11, and the hinge seat 4 is located in the middle of the vertical plate 11. A first hinge rod 5 is hinged to the hinge seat 4. The first hinge rod 5 is arranged vertically. A second hinge rod 6 is hinged to its bottom end, and a third hinge rod 7 is hinged to its top end. The second hinge rod 6 and the third hinge rod 7 are arranged inclined to both sides, and the hinge points of the two with the first hinge rod 5 can rotate flexibly.
[0020] The second hinge rod 6 is hinged to a limiting block 8 at the end away from the first hinge rod 5. The limiting block 8 is detachably installed on the top of the first shielding door 2 by bolts. The third hinge rod 7 is also hinged to another limiting block 8 at the end away from the first hinge rod 5. The limiting block 8 is detachably installed on the top of the second shielding door 3 by bolts. Through the above hinge structure, when the first hinge rod 5 deflects, it can drive the second hinge rod 6 and the third hinge rod 7 to rotate synchronously, thereby driving the first shielding door 2 and the second shielding door 3 to move in the horizontal direction.
[0021] like Figure 4As shown, an electric push rod 10 is hinged to one end of the upright plate 11. The output end of the electric push rod 10 extends to the middle of the first hinge rod 5 and is hinged to it. The electric push rod 10 serves as a power source, driving the first hinge rod 5 to deflect around the hinge seat 4. A sliding groove is provided at the bottom of the upright plate 11, and several sliders 12 are slidably connected in the groove. The bottom end of each slider 12 is fixed to the top of the first shielding door 2 and the second shielding door 3 by bolts. The cooperation between the sliders 12 and the sliding groove can guide the displacement direction of the first shielding door 2 and the second shielding door 3, while restricting their vertical movement and ensuring the stability of the movement.
[0022] The specific working principle is as follows: When the shielding door needs to be opened, the electric push rod 10 is activated, controlling the output end of the electric push rod 10 to retract, pulling the first hinge rod 5 to deflect around the hinge seat 4 towards one side of the electric push rod 10. During the deflection of the first hinge rod 5, the second hinge rod 6 at its bottom end and the third hinge rod 7 at its top end rotate accordingly, pushing the corresponding limit blocks 8 to both sides, thereby causing the first shielding door 2 and the second shielding door 3 to move away from each other along the sliding groove at the bottom of the upright plate 11. During this process, the slider 12 slides synchronously in the sliding groove, providing guidance and limiting for the movement of the door. As the first shielding door 2 and the second shielding door 3 separate, the notch 13 on the partition plate 1 gradually opens, allowing personnel or equipment to enter and exit normally.
[0023] When the shielding door needs to be closed, the output end of the control electric push rod 10 extends, pushing the first hinge rod 5 to deflect in the opposite direction around the hinge seat 4, which in turn drives the second hinge rod 6 and the third hinge rod 7 to pull the limiting block 8 towards the center, causing the first shielding door 2 and the second shielding door 3 to move closer to each other along the slide groove. When the two doors are fully closed, the sealing frames 9 on the outer sides of the first shielding door 2 and the second shielding door 3 are pressed against each other, and the high-pressure airbag undergoes elastic deformation, fully filling the gaps between the door bodies and the gaps between the door bodies and the edge of the recess 13, forming a reliable sealing structure, thereby achieving the dual effects of electromagnetic shielding and radiation shielding.
[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A high-performance pneumatic swing shielded door, comprising a partition (1), characterized in that: The partition (1) is provided with a split shielding assembly; The split shielding assembly includes a first shielding door (2) disposed in the middle of the partition (1), a second shielding door (3) disposed on one side of the first shielding door (2), the first shielding door (2) and the second shielding door (3) being disposed opposite to each other, and sealing frames (9) being disposed on the outer sides of the first shielding door (2) and the second shielding door (3), respectively. The displacement of the first shielding door (2) and the second shielding door (3) causes each sealing frame (9) to be squeezed together to fill the gap.
2. The high-performance pneumatic swing shielding door according to claim 1, characterized in that: The split shielding assembly also includes a vertical plate (11) disposed on the top of the partition (1), and a hinge seat (4) is fixedly disposed on one side of the vertical plate (11).
3. The high-performance pneumatic swing shielded door according to claim 2, characterized in that: The hinge seat (4) is hinged with a first hinge rod (5), the bottom end of the first hinge rod (5) is hinged with a second hinge rod (6), and the top end of the first hinge rod (5) is hinged with a third hinge rod (7).
4. A high-performance pneumatic swing shielded door according to claim 3, characterized in that: One end of the second hinge rod (6) and the third hinge rod (7) are respectively hinged to a limiting block (8), and each of the limiting blocks (8) is respectively installed on the top of the first shielding door (2) and the second shielding door (3) by bolts. The first shielding door (2) and the second shielding door (3) are displaced by the deflection of the third hinge rod (7), the second hinge rod (6) and the first hinge rod (5).
5. A high-performance pneumatic swing shielded door according to claim 4, characterized in that: One end of the upright plate (11) is hinged to an electric push rod (10), the output end of which extends to the first hinge rod (5) and is hinged to the first hinge rod (5).
6. A high-performance pneumatic swing shielded door according to claim 5, characterized in that: The bottom of the upright plate (11) is slidably connected to several sliders (12), and the bottom end of each slider (12) is fixed on the first shielding door (2) and the second shielding door (3) respectively. The sliders (12) guide and limit the displacement of the first shielding door (2) and the second shielding door (3).
7. A high-performance pneumatic swing shielded door according to claim 1, characterized in that: A notch (13) is provided through the partition (1). The first shielding door (2) and the second shielding door (3) are located on one side of the surface of the notch (13). The notch (13) opens when the first shielding door (2) and the second shielding door (3) move away from each other.
8. A high-performance pneumatic swing shielded door according to claim 1, characterized in that: The sealing frame (9) includes a plurality of high-pressure airbags, and each of the high-pressure airbags surrounds the outside of the first shielding door (2) and the second shielding door (3).