Protective door for radiation machine room

Abstract

The utility model discloses a protective door for a radiation machine room, which comprises a metal door body, a lead plate is fixed inside the metal door body, a side wall sealing mechanism is arranged on the outer side wall of the metal door body, the side wall sealing mechanism comprises an expansion sealing ring, an annular air groove is arranged on the outer side wall of the metal door body, and the expansion sealing ring is arranged in the annular air groove. An annular air groove is formed in the front surface of the metal door body, an expansion sealing ring is fixed into the annular air groove, an annular air pressing groove is formed in the front surface of the metal door body, an annular piston is slidably connected into the annular air pressing groove, and a plurality of supporting springs are fixed into the annular air pressing groove. According to the protective door for the radiation machine room, by arranging the side wall sealing mechanism, after the metal door body is closed, the door frame extrudes the annular piston, so that gas in the annular gas pressing groove enters the annular gas groove through the gas guide hole, the gas extrudes the expansion sealing ring outwards, the expansion sealing ring is attached to the inner side wall of the door frame, and the sealing performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of protective door technology, specifically a protective door for a radiation room. Background Technology

[0002] The radiology department is an important auxiliary examination department in hospitals. In modern hospital construction, the radiology department is a department that integrates examination, diagnosis, and treatment. Many diseases in various clinical departments require radiological examinations to achieve a clear diagnosis and assist in diagnosis. Radiology equipment generally includes conventional X-ray machines, computed tomography (CR) systems, direct digital radiography (DR) systems, computed tomography (CT) systems, magnetic resonance imaging (MRI) systems, and digital subtraction angiography (DSA) systems. Protective doors are used in the radiology department to protect the entrances and exits, providing radiation protection and airtightness.

[0003] Existing protective doors are sealed by using a compression sealing ring between the door body and the door frame, which then compresses and seals the door. This method has a small sealing area, as it only seals the contact surface between the door frame and the door body. To increase the sealing area, the contact and compression area between the door frame and the door body needs to be increased. The area of ​​the side wall of the door body inside the door frame is not utilized. Therefore, a protective door for radiation rooms is needed to seal the side wall of the door body, thereby increasing the sealing area. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a protective door for radiation rooms, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective door for a radiation room, comprising a metal door body, a lead plate fixed inside the metal door body, a side wall sealing mechanism on the outer side wall of the metal door body, the side wall sealing mechanism including an expansion sealing ring, an annular air groove on the outer side wall of the metal door body, the expansion sealing ring fixed inside the annular air groove, an annular pressure groove on the front surface of the metal door body, an annular piston slidably connected inside the annular pressure groove, multiple support springs fixed inside the annular pressure groove, a compression sealing ring fixed on the front surface of the metal door body outside the annular pressure groove, and multiple air guide holes inside the metal door body, the two ends of the air guide holes respectively connected to the annular air groove and the annular pressure groove.

[0006] Preferably, the metal door body has multiple air vents inside, a sealing ring is fixed inside the air vent, a sealing block is provided inside the air vent at one end of the sealing ring near the annular air pressure groove, a sealing spring is fixed on one side of the sealing block near the annular air pressure groove, a fixing ring is fixed on the other end of the sealing spring, the outer side wall of the fixing ring is fixedly connected to the inner side wall of the air vent, and multiple air leakage holes are provided on the left side of the sealing block.

[0007] Preferably, the metal door body is provided with multiple pulling mechanisms inside. Each pulling mechanism includes a movable frame. The inner sidewall of the annular air compression groove is provided with multiple inclined sliding grooves. The inclined surface of the movable frame and the inclined surface of the inclined sliding groove are slidably connected. A push spring is fixed inside the movable frame. A locking block is fixed at the other end of the push spring. Multiple locking holes are provided on the outer sidewall of the annular piston. A pull rope is fixed at the rear end of the movable frame. The other end of the pull rope passes through the metal door body and is fixedly connected to the sealing block.

[0008] Preferably, two support blocks are fixed to the inner sidewall of the air outlet, and guide wheels are rotatably connected inside the two support blocks, with the pull rope passing around the guide wheels.

[0009] Preferably, the pull rope is a steel wire rope.

[0010] Preferably, the elastic force of the support spring is greater than the elastic force of the sealing spring. Beneficial effects

[0011] This utility model provides a protective door for a radiation room. Compared with the prior art, it has the following advantages:

[0012] 1. The protective door of the radiation room is equipped with a side wall sealing mechanism. After the metal door is closed, the door frame squeezes the annular piston. In this way, the gas inside the annular pressure groove enters the interior of the annular gas groove through the gas guide hole. The gas squeezes the expansion sealing ring outward, so that the expansion sealing ring and the inner side wall of the door frame are in contact, thereby improving the sealing performance.

[0013] 2. The protective door of the radiation room is equipped with a pulling mechanism. After the annular piston moves and squeezes, the locking block is engaged in the interior of the locking hole. When the door is opened, the support spring pushes the annular piston to move. The annular piston moves the locking block and the moving frame. The moving frame pulls the pull rope, and the pull rope pulls the sealing block. In this way, the gas inside the annular gas groove passes through the leakage hole. This can speed up the return of the expansion sealing ring to its original state, reduce the adhesion between the expansion sealing ring and the door frame, thereby reducing the friction between the expansion sealing ring and the door frame and reducing the wear of the expansion sealing ring. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the structure on the right side of this utility model;

[0016] Figure 3 This is a cross-sectional view of the structure above the present invention;

[0017] Figure 4 This utility model Figure 3 Schematic diagram of the structure at point A;

[0018] Figure 5 This is a cross-sectional view of the movable frame in this utility model.

[0019] In the diagram: 1. Metal door body; 2. Side wall sealing mechanism; 3. Annular piston; 4. Compression sealing ring; 5. Air outlet; 6. Lead plate; 7. Annular air groove; 8. Expansion sealing ring; 9. Push spring; 10. Support spring; 11. Annular air compression groove; 12. Air guide hole; 13. Locking hole; 14. Inclined slide; 15. Locking block; 16. Pulling mechanism; 17. Guide wheel; 18. Support block; 19. Pull rope; 20. Fixing ring; 21. Sealing spring; 22. Leakage hole; 23. Sealing block; 24. Sealing ring; 25. Moving frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a protective door for a radiation room, including a metal door body 1, a lead plate 6 fixed inside the metal door body 1, a side wall sealing mechanism 2 on the outer side wall of the metal door body 1, the side wall sealing mechanism 2 including an expansion sealing ring 8, an annular air groove 7 on the outer side wall of the metal door body 1, the expansion sealing ring 8 fixed inside the annular air groove 7, an annular pressure groove 11 on the front surface of the metal door body 1, an annular piston 3 slidably connected inside the annular pressure groove 11, multiple support springs 10 fixed inside the annular pressure groove 11, a compression sealing ring 4 fixed on the outer side of the annular pressure groove 11 on the front surface of the metal door body 1, and multiple air guide holes 12 inside the metal door body 1, the two ends of the air guide holes 12 being connected to the annular air groove 7 and the annular pressure groove 11 respectively, thus sealing the side wall of the metal door body 1.

[0022] Furthermore, the metal door 1 has multiple air vents 5 inside, and a sealing ring 24 is fixed inside the air vent 5. A sealing block 23 is provided inside the air vent 5 at one end of the sealing ring 24 near the annular pressure groove 11. A sealing spring 21 is fixed on one side of the sealing block 23 near the annular pressure groove 11, and a fixing ring 20 is fixed on the other end of the sealing spring 21. The outer side wall of the fixing ring 20 is fixedly connected to the inner side wall of the air vent 5. Multiple air leakage holes 22 are provided on the left side of the sealing block 23, so that the gas inside the annular air groove 7 can be discharged.

[0023] Furthermore, the interior of the metal door 1 is equipped with multiple pulling mechanisms 16. Each pulling mechanism 16 includes a moving frame 25. The inner wall of the annular air compression groove 11 is provided with multiple inclined grooves 14. The inclined surface of the moving frame 25 and the inclined surface of the inclined groove 14 are slidably connected. A push spring 9 is fixed inside the moving frame 25. A locking block 15 is fixed at the other end of the push spring 9. Multiple locking holes 13 are provided on the outer wall of the annular piston 3. A pull rope 19 is fixed at the rear end of the moving frame 25. The other end of the pull rope 19 passes through the metal door 1 and is fixedly connected to the sealing block 23. This allows the sealing block 23 to move. Two support blocks 18 are fixed to the inner wall of the air outlet 5. A guide wheel 17 is rotatably connected inside the two support blocks 18. The pull rope 19 passes around the guide wheel 17, which guides the pull rope 19. The pull rope 19 is made of steel wire rope, which is durable and not easily damaged. The elastic force of the support spring 10 is greater than that of the sealing spring 21, which allows the support spring 10 to push the annular piston 3 back to its original position.

[0024] During operation, after the metal door 1 is closed, the door frame compresses the annular piston 3, which in turn compresses the gas inside the annular pressure groove 11. The gas inside the annular pressure groove 11 enters the annular gas groove 7 through the air guide hole 12. The gas pushes the expansion sealing ring 8 outward, causing it to fit against the inner wall of the door frame, improving the seal. After the annular piston 3 is compressed and moved, the locking block 15 engages with the locking hole 13. Thus, when the door is opened, the door frame reduces the pressure on the annular piston 3, and the support spring 10 pushes the annular piston 3 to move. The annular piston 3 moves along with the locking block 15 and the moving frame 25. The moving frame 25 pulls the pull rope 19, which in turn pulls the sealing block 23. The sealing block 23 and the sealing ring 24 separate, and the vent hole 22 is no longer blocked. The gas inside the annular air groove 7 will then pass through the vent hole 22 and be discharged. This will speed up the return of the expansion sealing ring 8 to its original state, reduce the contact between the expansion sealing ring 8 and the door frame, thereby reducing the friction between the expansion sealing ring 8 and the door frame and reducing the wear of the expansion sealing ring 8. When the annular piston 3 returns to its original position, the locking block 15 will also move out of the locking hole 13. In this way, the sealing spring 21 pushes the sealing block 23 and the sealing ring 24 to contact and seal the vent hole 22.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover 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. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective door for a radiation room, comprising a metal door body (1), characterized in that: A lead plate (6) is fixed inside the metal door (1). A side wall sealing mechanism (2) is provided on the outer side wall of the metal door (1). The side wall sealing mechanism (2) includes an expansion sealing ring (8). An annular air groove (7) is opened on the outer side wall of the metal door (1). The expansion sealing ring (8) is fixed inside the annular air groove (7). An annular air pressure groove (11) is opened on the front surface of the metal door (1). An annular piston (3) is slidably connected inside the annular air pressure groove (11). Multiple support springs (10) are fixed inside the annular air pressure groove (11). A compression sealing ring (4) is fixed on the front surface of the metal door (1) outside the annular air pressure groove (11). Multiple air guide holes (12) are opened inside the metal door (1). The two ends of the air guide holes (12) are respectively connected to the annular air groove (7) and the annular air pressure groove (11).

2. A protective door for a radiation room according to claim 1, characterized in that: The metal door (1) has multiple air vents (5) inside. A sealing ring (24) is fixed inside the air vent (5). A sealing block (23) is provided inside the air vent (5) at one end of the sealing ring (24) near the annular air pressure groove (11). A sealing spring (21) is fixed on one side of the sealing block (23) near the annular air pressure groove (11). A fixing ring (20) is fixed on the other end of the sealing spring (21). The outer side wall of the fixing ring (20) is fixedly connected to the inner side wall of the air vent (5). Multiple air leakage holes (22) are provided on the left side of the sealing block (23).

3. A protective door for a radiation room according to claim 2, characterized in that: The metal door (1) is provided with multiple pulling mechanisms (16) inside. The pulling mechanism (16) includes a moving frame (25). The inner side wall of the annular air pressure groove (11) is provided with multiple inclined sliding grooves (14). The inclined surface of the moving frame (25) and the inclined surface of the inclined sliding groove (14) are slidably connected. A push spring (9) is fixed inside the moving frame (25). A locking block (15) is fixed at the other end of the push spring (9). Multiple locking holes (13) are provided on the outer side wall of the annular piston (3). A pull rope (19) is fixed at the rear end of the moving frame (25). The other end of the pull rope (19) passes through the metal door (1) and is fixedly connected to the sealing block (23).

4. A protective door for a radiation room according to claim 3, characterized in that: Two support blocks (18) are fixed to the inner sidewall of the air outlet (5). The two support blocks (18) are rotatably connected to guide wheels (17), and the pull rope (19) passes around the guide wheels (17).

5. A protective door for a radiation room according to claim 4, characterized in that: The pull rope (19) is a steel wire rope.

6. A protective door for a radiation room according to claim 5, characterized in that: The elastic force of the support spring (10) is greater than that of the sealing spring (21).

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