A medical polymer radiation shielding door sealing device

Abstract

The present invention belongs to the technical field of shielding doors, and in particular to a sealing device for medical polymer radiation shielding doors. Aiming at the problem that the sealing strip arranged on the side of the existing lead door close to the wall will wear out under long-term friction, resulting in reduced sealing effect, and when the wear is small, it is difficult to detect leakage, thus affecting outdoor safety, the following scheme is proposed, which includes a door frame and a shielding door slidably arranged on one side of the door frame, a mounting seat is arranged on one side of the door frame, a reducer is fixedly arranged on the top of the mounting seat, a motor is fixedly arranged on one side of the reducer, and the output end of the motor is fixedly connected to the input end of the reducer, and efficient driving and smooth sliding are achieved through the coordinated use of the motor and the reducer, and multiple sealing and linkage sealing are achieved in cooperation with the sealing mechanism, and at the same time, multiple beneficial effects such as safety can be ensured through the monitoring mechanism, providing a strong guarantee for the safety and reliability of the medical environment.

Description

Technical Field

[0001] The invention relates to the technical field of shielding doors, in particular to a sealing device for a medical polymer radiation shielding door. Background Art

[0002] Radiation refers to the phenomenon that part of the electromagnetic energy emitted by the field source escapes from the field source and propagates to a distant place, and then diffuses outward in the form of electromagnetic waves or particles (such as alpha particles, beta particles, etc.) and no longer returns to the field source. Lead doors are usually used for sealing during treatment.

[0003] The existing lead doors also have the following disadvantages during use: a rubber strip for sealing is provided on the side of the lead door close to the wall, and the rubber strip will wear out under long-term friction, resulting in reduced sealing effect, and when the wear is small and leakage is difficult to detect, it will pose a threat to outdoor safety. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that a rubber strip for sealing is set on the side of the lead door and the wall that are close to each other, and the rubber strip will wear out due to long-term friction, resulting in reduced sealing effect, and when the wear is small, leakage cannot be identified, affecting outdoor safety, and a medical polymer radiation shielding door sealing device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A medical polymer radiation shielding door sealing device comprises a door frame and a shielding door slidably arranged on one side of the door frame, a mounting seat is arranged on one side of the door frame, a reducer is fixedly arranged on the top of the mounting seat, a motor is fixedly arranged on one side of the reducer, an output end of the motor is fixedly connected to an input end of the reducer, a gear is fixedly sleeved on the output end of the reducer, a rack meshing with the gear is arranged on one side of the door frame, and is used to drive the shielding door to move;

[0007] The inner sliding part of the shielding door is provided with an extension door adapted to the door frame, and the extension door is used in conjunction with the rack. After the shielding door is closed, the extension door moves into the door frame to seal the door frame;

[0008] A sealing mechanism is arranged on the door frame, and the sealing mechanism includes two second fixing strips, a plurality of fourth guide rods, a second sealing strip, a first sealing plate, and a wedge block. The outer wall of the fourth guide rod is sleeved with a fourth spring for sealing the gap between the top and bottom of the shielding door and the door frame. The first sealing plate is used in conjunction with the shielding door to limit the shielding door and seal the gap between one side of the shielding door and the door frame, and drives the two second sealing strips to approach the shielding door during the movement of the shielding door, and drives the third sealing plate to approach the door frame during the process of the two second sealing strips approaching the shielding door;

[0009] The transmission mechanism is arranged on the shielding door and cooperates with the rack after the shielding door moves into position to provide moving power for the extension door and the sealing mechanism;

[0010] The monitoring mechanism is arranged on the sealing mechanism and is used for monitoring the sealing performance of the sealing mechanism.

[0011] In a possible design, a plurality of connecting frames are fixedly provided on one side of the door frame, two upper guide rails are fixedly provided on the bottom of the plurality of connecting frames, a plurality of guide wheels are slidably provided between the two upper guide rails, the plurality of guide wheels are rotatably provided on the top of the shielding door, a lower guide rail is provided on one side of the door frame, a roller is slidably provided on the lower guide rail, the roller is rotatably provided on the bottom of the shielding door, and is used to reduce the friction between the shielding door and the ground.

[0012] In a possible design, two second fixing strips are fixed on one side of the door frame, a plurality of fourth guide rods are slidably arranged on the top of the second fixing strips, a second sealing strip is fixed on the side where the two groups of fourth guide rods are close to each other, two ends of the fourth spring are respectively fixedly connected to the outer wall of the fourth guide rod and the side of the second fixing strip away from the second sealing strip, and a first sealing plate is fixed on one side of the door frame.

[0013] In a possible design, a first sliding rod for use with the shielding door is slidably provided through one side of the first sealing plate, a connecting rod is rotatably provided at one end of the second sealing strip, and both connecting rods are rotatably connected to the first sliding rod.

[0014] In a possible design, a first fixing strip is fixedly provided on a side of the shielding door away from the first sealing plate, a plurality of second guide rods are slidably provided through one side of the first fixing strip, a same third sealing plate is fixedly provided on one end of the plurality of second guide rods, a second spring is sleeved on an outer wall of the second guide rod, two ends of the second spring are respectively fixedly connected to an outer wall of one end of the second guide rod and an outer side of the first fixing strip, the third sealing plate is transmission-connected to the two second sealing strips for driving the third sealing plate to approach the door frame to seal the gap between the other side of the shielding door and the door frame, and sealing strips are provided on the mutually close sides of the first sealing plate, the second sealing strip, the third sealing plate and the shielding door.

[0015] In a possible design, two wedge blocks are respectively fixed on the sides of the two second sealing strips that are away from each other, and the top and bottom of the third sealing plate are both provided with rectangular openings for use with the wedge blocks.

[0016] In a possible design, the transmission mechanism includes a sliding plate slidably arranged in the shielding door, the extension door is fixedly arranged on one side of the sliding plate, and a plurality of fixing frames are fixedly arranged on the other side of the sliding plate, a third guide rod is slidably provided through one side of the fixing frame, one end of the third guide rod is fixedly connected to an inner wall of one side of the shielding door, a third spring is sleeved on an outer wall of the third guide rod, and two ends of the third spring are respectively fixedly connected to an outer wall of one end of the third guide rod and an inner side of the fixing frame, at least two moving bars are slidably arranged in the shielding door, the moving bars are located on one side of the fixing frame, a wedge groove used in conjunction with the fixing frame is provided on a side of the moving bar close to the fixing frame, and both of the moving bars are connected to the rack transmission.

[0017] In a possible design, a plurality of second fixed blocks are fixedly provided on one side of the shielding door, a first fixed block corresponding to the second fixed block is fixedly provided on the bottom of the rack, a first guide rod is slidably provided through one side of the first fixed block, one end of the first guide rod is fixedly connected to the corresponding second fixed block, a first spring is sleeved on the outer wall of the first guide rod, and two ends of the first spring are respectively fixedly connected to the second fixed block and the first fixed block on one side close to each other.

[0018] In a possible design, two connecting strips are fixed between the two moving strips, and a plurality of second sliding rods are fixed on one side of the connecting strip away from the first sealing plate. The plurality of second sliding rods all extend to the outside of the shielding door, and a push plate used in conjunction with the plurality of second sliding rods is fixed on the top of the rack.

[0019] In a possible design, the monitoring mechanism includes a water tank fixedly arranged on one side of the door frame, a piston plate is slidably provided between the water tank and the door frame, a fifth guide rod is fixedly provided on an inner wall of one side of the water tank, the piston plate is slidably sleeved on the fifth guide rod, the outer wall of the fifth guide rod is sleeved with a fifth spring, the two sides of the fifth spring are respectively fixedly connected to the inner wall of one side of the water tank and the inner side of the piston plate, an extension rod is slidably provided through one side of the first sliding rod, one end of the extension rod is fixedly connected to the piston plate, a top rod used in conjunction with the extension rod is slidably provided through the side of the shielding door away from the third sealing plate, one end of the top rod is fixedly connected to the corresponding connecting strip, two second sealing strips, the first sealing plate, the third sealing plate and the shielding door are close to each other on one side thereof, water grooves are provided to form a channel, an air vent is provided on the top of the second sealing strip located above, the water groove on the second sealing strip located below is connected to the water tank through a connecting pipe for filling water into the water groove.

[0020] Beneficial effects: In the present invention, the medical polymer radiation shielding door sealing device significantly reduces the friction and resistance of the shielding door during movement through the combined design of the upper guide rail, the lower guide rail, the guide wheel and the roller, so that the shielding door can slide easily and smoothly. This not only increases the service life of the shielding door, but also reduces energy consumption and noise;

[0021] In the present invention, the sealing device for a medical polymer radiation shielding door, the sealing mechanism includes components such as a second sealing strip, a fourth spring, a first sealing plate and a third sealing plate, which together constitute multiple seals for the gap between the shielding door and the door frame. Through the linkage design of the first sliding rod, the connecting rod and the second sealing strip, the effect of automatically driving the second sealing strip to approach the shielding door during the movement of the shielding door is achieved. At the same time, by arranging a wedge block on the side where the two second sealing strips are away from each other and using it in conjunction with the rectangular opening on the third sealing plate, when the second sealing strip approaches the shielding door, it can effectively drive the third sealing plate to approach the door frame, thereby achieving a tighter sealing effect, which not only improves the sealing performance of the shielding door, but also further prevents radiation leakage, thereby ensuring the safety of the medical environment.

[0022] In the present invention, the medical polymer radiation shielding door sealing device realizes the automatic resetting function of the rack after movement by arranging the second fixing block and the first fixing block on one side of the shielding door, and the cooperation of the first guide rod and the first spring, and realizes the two-stage movement of the rack and the shielding door at the same time, and utilizes the moving power of the rack to drive the shielding door to move, and drives the extension door to move after the shielding door moves;

[0023] In the present invention, the medical polymer radiation shielding door sealing device, the monitoring mechanism realizes the real-time monitoring function of the shielding door sealing state through the combined design of the water tank, the piston plate, the fifth guide rod and the fifth spring, and the cooperation of the extension rod, the top rod and the water tank. When there is a leak in the water tank, water will flow out and form obvious traces, thereby reminding the operator to deal with it in time, which not only improves the safety of the shielding door, but also effectively avoids the potential risks caused by radiation leakage;

[0024] In the present invention, efficient driving and smooth sliding are achieved through the coordinated use of the motor and the reducer, and multiple seals and linkage seals are achieved in conjunction with the sealing mechanism. At the same time, multiple beneficial effects such as safety can be ensured through the monitoring mechanism, providing a strong guarantee for the safety and reliability of the medical environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a medical polymer radiation shielding door sealing device proposed by the present invention;

[0026] Figure 2A schematic diagram of the shielding door structure of a medical polymer radiation shielding door sealing device proposed by the present invention;

[0027] Figure 3 A schematic diagram of the partial structure of a shielding door from another perspective of a medical polymer radiation shielding door sealing device proposed by the present invention;

[0028] Figure 4 A schematic diagram of the cross-sectional structure of a shielding door of a medical polymer radiation shielding door sealing device proposed by the present invention;

[0029] Figure 5 This is a schematic diagram of the installation structure of an extended door of a medical polymer radiation shielding door sealing device proposed by the present invention;

[0030] Figure 6 This is a schematic structural diagram of a second sealing plate of a medical polymer radiation shielding door sealing device proposed by the present invention;

[0031] Figure 7 This is a schematic diagram of the cross-sectional structure of a water tank of a medical polymer radiation shielding door sealing device proposed by the present invention.

[0032] In the figure: 1, door frame; 2, shielding door; 3, connecting frame; 4, upper guide rail; 5, guide wheel; 6, mounting seat; 7, reducer; 8, motor; 9, rack; 10, gear; 11, first sealing plate; 12, first sliding rod; 13, second sealing strip; 14, connecting rod; 15, connecting pipe; 16, water tank; 17, lower guide rail; 18, roller; 19, second sliding rod; 20, push plate; 21, first fixed block; 22, first guide rod; 23, second fixed block; 24, first spring; 25, The first fixing strip; 26, the second guide rod; 27, the second spring; 28, the third sealing plate; 29, the rectangular opening; 30, the water tank; 31, the extension door; 32, the sliding plate; 33, the moving strip; 34, the connecting strip; 35, the fixing frame; 36, the third guide rod; 37, the third spring; 38, the wedge groove; 39, the push rod; 40, the second fixing strip; 41, the fourth guide rod; 42, the fourth spring; 43, the wedge block; 44, the piston plate; 45, the fifth guide rod; 46, the fifth spring; 47, the extension rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Example 1: Reference Figure 1-Figure 7A sealing device comprises: a door frame 1 and a shielding door 2 slidably arranged on one side of the door frame 1. A mounting seat 6 is arranged on one side of the door frame 1, a reducer 7 is fixedly arranged on the top of the mounting seat 6, a motor 8 is fixedly arranged on one side of the reducer 7, an output end of the motor 8 is fixedly connected to an input end of the reducer 7 through a coupling, and a gear 10 is fixedly sleeved on the output end of the reducer 7. A rack 9 meshing with the gear 10 is arranged on one side of the door frame 1. When the motor 8 is working, the gear 10 is driven to rotate through the deceleration and torque-increasing effect of the reducer 7, and then meshed with the rack 9, thereby driving the shielding door 2 to slide and move on the door frame 1.

[0035] The inner sliding of the shielding door 2 is provided with an extension door 31 adapted to the door frame, and the extension door 31 is used in conjunction with the rack 9. After the shielding door 2 is closed, the extension door 31 can be moved into the door frame under the action of the transmission mechanism to further seal the door gap.

[0036] In order to achieve the gap sealing between the shielding door 2 and the door frame 1, a sealing mechanism is provided. The sealing mechanism includes two second fixing strips 40 fixedly provided on one side of the door frame 1, a plurality of fourth guide rods 41 are slidably provided through the top of the second fixing strips 40, and a second sealing strip 13 is fixedly provided on the side close to each other of the two groups of fourth guide rods 41. A fourth spring 42 is sleeved on the outer wall of the fourth guide rod 41, and the two ends of the fourth spring 42 are respectively fixedly connected to the outer wall of the fourth guide rod 41 and the side of the second fixing strip 40 away from the second sealing strip 13. When the shielding door 2 is closed, the second sealing strip 13 will be in close contact with the shielding door 2 under the action of the fourth spring 42, thereby achieving sealing.

[0037] A first sealing plate 11 is fixedly provided on one side of the door frame 1. The first sealing plate 11 is used in conjunction with the shielding door 2 to limit the position of the shielding door 2 and seal the gap between one side of the shielding door 2 and the door frame 1. A first sliding rod 12 used in conjunction with the shielding door 2 is slidably provided on one side of the first sealing plate 11. A connecting rod 14 is rotatably provided at one end of the second sealing strip 13. Both connecting rods 14 are rotatably connected to the first sliding rod 12. When the shielding door 2 moves, it pushes the first sliding rod 12 to slide, and then drives the two second sealing strips 13 to approach the shielding door 2 through the connecting rod 14, further enhancing the sealing effect.

[0038] In order to provide power for the movement of the extension door 31 and the sealing mechanism, a transmission mechanism is provided.

[0039] In addition, a plurality of connecting frames 3 are fixedly provided on one side of the door frame 1, two upper guide rails 4 are fixedly provided at the bottom of the plurality of connecting frames 3, a plurality of guide wheels 5 are slidably provided between the two upper guide rails 4, and the plurality of guide wheels 5 are rotatably provided on the top of the shielding door 2. A lower guide rail 17 is also provided on one side of the door frame 1, a roller 18 is slidably provided on the lower guide rail 17, and the roller 18 is rotatably provided on the bottom of the shielding door 2. Such a design can reduce the friction between the shielding door 2, the door frame 1 and the ground, so that the movement of the shielding door 2 is smoother.

[0040] A first fixing strip 25 is fixedly provided on one side of the shielding door 2 away from the first sealing plate 11, and a plurality of second guide rods 26 are slidably provided through one side of the first fixing strip 25, and a third sealing plate 28 is fixedly provided at one end of the plurality of second guide rods 26. A second spring 27 is sleeved on the outer wall of the second guide rod 26, and the two ends of the second spring 27 are fixedly connected to the outer wall of one end of the second guide rod 26 and the outer side of the first fixing strip 25, respectively.

[0041] A first sliding rod 12 for use with the shielding door 2 is slidably provided on one side of the first sealing plate 11, and a connecting rod 14 is rotatably provided at one end of the second sealing strip 13. Both connecting rods 14 are rotatably connected to the first sliding rod 12, and drive the two second sealing strips 13 to approach the shielding door 2 during the movement of the shielding door 2.

[0042] When the shielding door 2 is closed, the third sealing plate 28 is drivingly connected to the two second sealing strips 13. When the second sealing strips 13 approach the shielding door 2, the third sealing plate 28 is driven to approach the door frame 1, further enhancing the sealing effect.

[0043] Sealing strips are provided on the first sealing plate 11, the second sealing strip 13, the third sealing plate 28 and the shielding door 2 on the side close to each other to improve the sealing performance.

[0044] A wedge block 43 is fixedly provided on the side where the two second sealing strips 13 are away from each other. A rectangular opening 29 matching the shape of the wedge block 43 is respectively provided on the top and bottom of the third sealing plate 28. When the shielding door 2 moves and approaches the door frame 1, the two second sealing strips 13 will approach the shielding door 2 under the action of the two connecting rods 14. In this process, the wedge block 43 will slide into the rectangular opening 29, and as the second sealing strip 13 moves further, the third sealing plate 28 will be pushed closer to the door frame 1, thereby achieving a tighter sealing effect.

[0045] The specific design of the transmission mechanism includes a sliding plate 32 slidably arranged in the shielding door 2, and an extension door 31 fixedly arranged on one side of the sliding plate 32. A plurality of fixing frames 35 are fixedly arranged on the other side of the sliding plate 32, and a third guide rod 36 is slidably arranged on one side of each fixing frame 35, and one end of the third guide rod 36 is fixedly connected to an inner wall of one side of the shielding door 2. A third spring 37 is sleeved on the outer wall of the third guide rod 36, and its two ends are respectively fixedly connected to the outer wall of one end of the third guide rod 36 and the inner side of the fixing frame 35. Such a design enables the sliding plate 32 and the extension door 31 to move under the elastic force of the third spring 37.

[0046] At least two moving bars 33 are also slidably provided in the shielding door 2, and they are located on one side of the fixing frame 35. A wedge groove 38 for use with the fixing frame 35 is provided on one side of the moving bar 33 close to the fixing frame 35. Both moving bars 33 are transmission-connected with the rack 9. When the rack 9 moves, the moving bars 33 are driven to move, and then the sliding plate 32 and the extension door 31 are pushed to move through the cooperation of the wedge groove 38 and the fixing frame 35.

[0047] In order to realize the multi-stage movement of the rack 9, a plurality of second fixed blocks 23 are fixedly provided on one side of the shielding door 2. At the bottom of the rack 9, a first fixed block 21 corresponding to the second fixed block 23 is fixedly provided. A first guide rod 22 is slidably provided through one side of the first fixed block 21, one end of which is fixedly connected to the corresponding second fixed block 23. A first spring 24 is sleeved on the outer wall of the first guide rod 22, and its two ends are respectively fixedly connected to the second fixed block 23 and the first fixed block 21 on the side close to each other. Such a design enables the rack 9 to remain stable during movement, and can be reset under the elastic force of the first spring 24, and realize multi-stage movement.

[0048] The present application can be used in the field of shielding doors, and can also be used in other fields applicable to the present application.

[0049] Example 2: Reference Figure 1-Figure 7 , improved on the basis of Example 1: A medical polymer radiation shielding door sealing device, which is applied to the field of shielding doors, has two connecting strips 34 fixedly arranged between the two moving strips 33. A plurality of second sliding rods 19 are fixedly arranged on one side of the connecting strip 34 away from the first sealing plate 11, and they all extend to the outside of the shielding door 2. On the top of the rack 9, a push plate 20 used in conjunction with the plurality of second sliding rods 19 is fixedly arranged. When the rack 9 moves, the push plate 20 pushes the second sliding rods 19 and the connecting strip 34 to move, thereby driving the moving strip 33 and the sliding plate 32 to move.

[0050] In order to monitor the sealing performance of the sealing mechanism, a monitoring mechanism is provided, which includes a water tank 16 fixedly arranged on one side of the door frame 1, and a piston plate 44 is slidably arranged between the water tank 16 and the door frame 1. A fifth guide rod 45 is fixedly arranged on the inner wall of one side of the water tank 16, and the piston plate 44 is slidably sleeved on the fifth guide rod 45. A fifth spring 46 is sleeved on the outer wall of the fifth guide rod 45, and its two sides are respectively fixedly connected to the inner wall of one side of the water tank 16 and the inner side of the piston plate 44. Such a design enables the piston plate 44 to move under the elastic force of the fifth spring 46.

[0051] On one side of the first sliding rod 12, an extension rod 47 is provided for sliding therethrough, one end of which is fixedly connected to the piston plate 44. On the side of the shielding door 2 away from the third sealing plate 28, a push rod 39 is provided for sliding therethrough for use in conjunction with the extension rod 47, one end of which is fixedly connected to the corresponding connecting strip 34. When the connecting strip 34 moves, the push rod 39 is driven to move, thereby pushing the extension rod 47 and the piston plate 44 to move.

[0052] A water tank 30 is provided on the side where the two second sealing strips 13, the first sealing plate 11, the third sealing plate 28 and the shielding door 2 are close to each other, forming a channel. A vent hole is also provided on the top of the second sealing strip 13 located above so as to release the internal gas during the sealing process. The water tank 30 on the second sealing strip 13 located below is connected to the water tank 16 through the connecting pipe 15. When the piston plate 44 moves, it compresses the water in the water tank 16 and injects it into the water tank 30 through the connecting pipe 15, thereby realizing the water filling monitoring of the water tank 30. If there is a leak in the water tank 30, the water will flow out and form an obvious trace, thereby reminding the operator to deal with it in time, so as to judge that the sealing strip is damaged.

[0053] In the present application, when the shielding door 2 needs to be closed, the starter motor 8 drives the reducer 7 to rotate, and the rotation of the reducer 7 can drive the rack 9 to move through the gear 10. During the movement of the rack 9, the first guide rod 22 can be pushed to move through the first fixed block 21. The movement of the first guide rod 22 can push the second fixed block 23 to drive the shielding door 2 to move. When the shielding door 2 contacts the first sliding rod 12, the first sliding rod 12 can be driven to slide on the first sealing plate 11. During the movement of the first sliding rod 12, the upper and lower second sealing strips 13 can be driven to approach each other through the two connecting rods 14 to seal the gap between the shielding door 2 and the door frame 1 until one side of the shielding door 2 contacts the first sealing plate 11. The gap between the shielding door 2 and the door frame 1 can be sealed through the first sealing plate 11. During the process of the two second sealing strips 13 approaching each other, the wedge block 43 can be driven to move. The movement of the wedge block 43 can cooperate with the rectangular opening 29 to drive the third sealing plate 28 to approach the door frame 1, and further seal the gap between the shielding door 2 and the door frame 1.

[0054] Continue to start the motor 8 to drive the rack 9 to move. The movement of the rack 9 can compress the first guide rod 22 through the first fixed block 21 and drive the push plate 20 to move. The movement of the push plate 20 can push multiple second sliding rods 19 to move simultaneously. The movement of the second sliding rod 19 can drive the connecting bar 34 to move. The movement of the connecting bar 34 can drive the two moving bars 33 to move simultaneously. The movement of the moving bar 33 drives the fixing frame 35 to move through the wedge groove 38. The movement of the fixing frame 35 can compress the third spring 37 and push the sliding plate 32 to move inward, so as to push the extension door 31 into the door, further seal the shielding door 2 and the door frame 1. At this time, the two corresponding water tanks 30 form a complete channel.

[0055] The moving bar 33 can drive the push rod 39 to move during the movement, and the movement of the push rod 39 can drive the piston plate 44 to move through the extension rod 47, and the movement of the piston plate 44 can squeeze out the water in the water tank 16, and the water enters the water tank 30 through the connecting pipe 15 until the water tank 30 is full of water, and finally the door frame 1 and the shielding door 2 are sealed again;

[0056] When the sealing rubber strips between the first sealing plate 11 , the second sealing strip 13 , the third sealing plate 28 and the shielding door 2 are damaged, the water in the water tank 30 can flow out, and the quality of the rubber strips can be judged by the overflowing water stains.

[0057] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 8 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A medical polymer radiation shielding door sealing device, characterized in that: The invention comprises a door frame (1) and a screen door (2) slidably arranged on one side of the door frame (1); a mounting seat (6) is arranged on one side of the door frame (1); a reducer (7) is fixedly arranged on the top of the mounting seat (6); a motor (8) is fixedly arranged on one side of the reducer (7); an output end of the motor (8) is fixedly connected to an input end of the reducer (7); a gear (10) is fixedly sleeved on the output end of the reducer (7); a rack (9) meshing with the gear (10) is arranged on one side of the door frame (1) for driving the screen door (2) to move; An extension door (31) adapted to the door frame (1) is slidably disposed inside the shielding door (2); the extension door (31) cooperates with the rack (9) for use; after the shielding door (2) is closed, the extension door (31) moves into the door frame (1) to seal the door frame (1); A sealing mechanism is arranged on a door frame (1), the sealing mechanism comprising two second fixing strips (40), a plurality of fourth guide rods (41), a second sealing strip (13), a first sealing plate (11), a wedge block (43) and a third sealing plate (28), the two wedge blocks (43) being respectively fixed on the sides of the two second sealing strips (13) which are away from each other, the top and bottom of the third sealing plate (28) are both provided with rectangular openings (29) for use with the wedge blocks (43), the outer wall of the fourth guide rod (41) is sleeved with a fourth spring (42), and the second sealing strip (13) is used to shield the second sealing strip (13) under the action of the fourth spring (42). The gap between the top and bottom of the door (2) and the door frame (1) is sealed, and the first sealing plate (11) is used in conjunction with the shielding door (2) to limit the shielding door (2) and seal the gap between one side of the shielding door (2) and the door frame (1). In the process of the shielding door (2) moving, the two second sealing strips (13) are driven to approach the shielding door (2), and in the process of the two second sealing strips (13) approaching the shielding door (2), the wedge block (43) is driven to move. The movement of the wedge block (43) can cooperate with the rectangular opening (29) to drive the third sealing plate (28) to approach the door frame (1), thereby sealing the gap between the other side of the shielding door (2) and the door frame (1); A transmission mechanism, arranged on the shielding door (2), cooperates with the rack (9) to provide moving power for the extension door (31) and the sealing mechanism after the shielding door (2) is moved into position; The monitoring mechanism is arranged on the sealing mechanism and is used for monitoring the sealing performance of the sealing mechanism.

2. A medical polymer radiation shielding door sealing device according to claim 1, characterized in that: A plurality of connecting frames (3) are fixedly provided on one side of the door frame (1); two upper guide rails (4) are fixedly provided on the bottom of the plurality of connecting frames (3); a plurality of guide wheels (5) are slidably provided between the two upper guide rails (4); the plurality of guide wheels (5) are rotatably provided on the top of the shielding door (2); a lower guide rail (17) is provided on one side of the door frame (1); a roller (18) is slidably provided on the lower guide rail (17); the roller (18) is rotatably provided on the bottom of the shielding door (2) for reducing the friction between the shielding door (2) and the ground.

3. A medical polymer radiation shielding door sealing device according to claim 1, characterized in that: Two second fixing strips (40) are fixedly arranged on one side of the door frame (1); a plurality of fourth guide rods (41) are slidably arranged on the top of the second fixing strips (40); a second sealing strip (13) is fixedly arranged on a side where two groups of the fourth guide rods (41) are close to each other; two ends of the fourth spring (42) are respectively fixedly connected to the outer wall of the fourth guide rod (41) and a side of the second fixing strip (40) away from the second sealing strip (13); and a first sealing plate (11) is fixedly arranged on one side of the door frame (1).

4. A medical polymer radiation shielding door sealing device according to claim 3, characterized in that: A first sliding rod (12) for use with the shielding door (2) is slidably provided through one side of the first sealing plate (11), and a connecting rod (14) is rotatably provided at one end of the second sealing strip (13), and both connecting rods (14) are rotatably connected to the first sliding rod (12).

5. A medical polymer radiation shielding door sealing device according to claim 4, characterized in that: A first fixing strip (25) is fixedly provided on a side of the shielding door (2) away from the first sealing plate (11); a plurality of second guide rods (26) are slidably provided through one side of the first fixing strip (25); a third sealing plate (28) is fixedly provided at one end of the plurality of second guide rods (26); a second spring (27) is sleeved on the outer wall of the second guide rod (26); the two ends of the second spring (27) are respectively fixedly connected to the outer wall of one end of the second guide rod (26) and the outer side of the first fixing strip (25); the third sealing plate (28) is transmission-connected to the two second sealing strips (13) for driving the third sealing plate (28) to approach the door frame (1); and sealing strips are provided on the mutually adjacent sides of the first sealing plate (11), the second sealing strip (13), the third sealing plate (28) and the shielding door (2).

6. A medical polymer radiation shielding door sealing device according to claim 5, characterized in that: The transmission mechanism comprises a sliding plate (32) slidably arranged in the shielding door (2), the extension door (31) is fixedly arranged on one side of the sliding plate (32), a plurality of fixing frames (35) are fixedly arranged on the other side of the sliding plate (32), a third guide rod (36) is slidably arranged through one side of the fixing frame (35), one end of the third guide rod (36) is fixedly connected to an inner wall of one side of the shielding door (2), a third spring (37) is sleeved on an outer wall of the third guide rod (36), two ends of the third spring (37) are respectively fixedly connected to an outer wall of one end of the third guide rod (36) and an inner side of the fixing frame (35), at least two moving bars (33) are slidably arranged in the shielding door (2), the moving bars (33) are located on one side of the fixing frame (35), a wedge groove (38) used in conjunction with the fixing frame (35) is opened on a side of the moving bar (33) close to the fixing frame (35), and both of the two moving bars (33) are transmission-connected to the rack (9).

7. A medical polymer radiation shielding door sealing device according to claim 6, characterized in that: A plurality of second fixing blocks (23) are fixedly provided on one side of the shielding door (2); a first fixing block (21) corresponding to the second fixing block (23) is fixedly provided on the bottom of the rack (9); a first guide rod (22) is slidably provided through one side of the first fixing block (21); one end of the first guide rod (22) is fixedly connected to the corresponding second fixing block (23); a first spring (24) is sleeved on the outer wall of the first guide rod (22); and two ends of the first spring (24) are respectively fixedly connected to the second fixing block (23) and the first fixing block (21) on one side close to each other.

8. The medical polymer radiation shielding door sealing device according to claim 7, characterized in that: Two connecting bars (34) are fixedly provided between the two moving bars (33); a plurality of second sliding rods (19) are fixedly provided on one side of the connecting bar (34) away from the first sealing plate (11); the plurality of second sliding rods (19) all extend to the outside of the shielding door (2); and a push plate (20) for use with the plurality of second sliding rods (19) is fixedly provided on the top of the rack (9).

9. The medical polymer radiation shielding door sealing device according to claim 6, characterized in that: The monitoring mechanism comprises a water tank (16) fixedly arranged on one side of the door frame (1); a piston plate (44) is slidably arranged between the water tank (16) and the door frame (1); a fifth guide rod (45) is fixedly arranged on the inner wall of one side of the water tank (16); the piston plate (44) is slidably sleeved on the fifth guide rod (45); a fifth spring (46) is sleeved on the outer wall of the fifth guide rod (45); two sides of the fifth spring (46) are respectively fixedly connected to the inner wall of one side of the water tank (16) and the inner side of the piston plate (44); an extension rod (47) is slidably arranged through one side of the first sliding rod (12); one end of the extension rod (47) is slidably sleeved on the piston plate (44); The shielding door (2) is fixedly connected, and a top rod (39) for use with the extension rod (47) is slidably provided on the side of the shielding door (2) away from the third sealing plate (28). One end of the top rod (39) is fixedly connected to the corresponding connecting strip (34). The two second sealing strips (13), the first sealing plate (11), the third sealing plate (28) and the shielding door (2) are provided with water grooves (30) on the sides close to each other to form a channel. The top of the second sealing strip (13) located at the top is provided with an air vent. The water groove (30) on the second sealing strip (13) located at the bottom is connected to the water tank (16) through a connecting pipe (15) for filling water into the water groove (30).

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