Sterility detection device for medical apparatus and instruments

Abstract

The invention relates to the technical field of sterility detection, in particular to a sterility detection device for medical instruments, which comprises a supporting seat, a plurality of circumferentially distributed detection cylinders and a plurality of circumferentially distributed containing cylinders are mounted at the top of the supporting seat, a rotating rod penetrates through the supporting seat, and a supporting plate is fixed at the upper end of the rotating rod. A sampling barrel penetrates through the interior of the supporting plate, an extraction mechanism is arranged in the sampling barrel, the extraction mechanism is used for extracting a microorganism culture solution into the sampling barrel, the bottom in the containing barrel is communicated with a liquid outlet pipe, the end, away from the containing barrel, of the liquid outlet pipe is located over the detection barrel, and a blocking mechanism is arranged in the containing barrel. According to the device disclosed by the invention, through the arrangement of the plurality of detection cylinders which are circumferentially distributed and the containing cylinder, the device can be used for simultaneously detecting a culture solution for multiple times, the detection efficiency is relatively high, and a worker does not need to frequently extract the culture solution and a detection solution into the detection cylinders, so that manpower is saved.

Description

Technical Field

[0001] The invention relates to the technical field of sterility detection, in particular to a sterility detection device for medical equipment. Background Art

[0002] After the production of medical devices, sterile products need to undergo sterility testing to confirm whether the products are sterile. Traditional testing is to manually sample the surface of the medical device and then place it in a constant temperature environment for incubation to observe whether microbial proliferation occurs to determine whether there are any microbial species.

[0003] In the prior art, when detecting microorganisms, a detection liquid is mostly added to the culture medium to determine whether there are microorganisms in the culture medium, thereby achieving the purpose of sterility detection of medical devices. The detection liquid can be a chemical indicator or a biological detection agent. In order to improve the accuracy of the test results, the culture medium needs to be tested multiple times, which wastes manpower and reduces the detection efficiency of medical devices. Summary of the invention

[0004] The object of the present invention is to provide a sterility detection device for medical devices to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sterility detection device for medical equipment comprises a support base, a plurality of detection cylinders and a plurality of containing cylinders distributed in a circle are installed on the top of the support base, a rotating rod passes through the support base, a rotating mechanism is connected to the lower end of the rotating rod, the rotating mechanism is used to drive the rotating rod to rotate, a support plate is fixed to the upper end of the rotating rod, a sampling cylinder passes through the support plate, the sampling cylinder and the support plate are detachably connected, wherein an extraction mechanism is provided inside the sampling cylinder, the extraction mechanism is used to draw microbial culture liquid into the sampling cylinder, and can also discharge the microbial culture liquid into the detection cylinder, the bottom of the containing cylinder is connected to a liquid outlet pipe, the end of the liquid outlet pipe away from the containing cylinder is located directly above the detection cylinder, and a blocking mechanism is provided inside the containing cylinder, the blocking mechanism is used to block the liquid outlet pipe.

[0007] Preferably: the support plate surface is provided with a through hole for the sampling tube to pass through, the through hole side walls are provided with symmetrically distributed placement grooves, the placement grooves extend to the top of the support plate, and the sampling tube side walls are fixed with symmetrically distributed placement blocks that are compatible with the placement grooves.

[0008] Preferably: the extraction mechanism includes a piston arranged inside the sampling barrel, the piston is slidably connected to the inner wall of the sampling barrel, wherein a threaded sleeve is fixed on the top of the piston, the top of the threaded sleeve is threadedly connected to a threaded rod, a limit frame is fixed on the top of the sampling barrel, the threaded rod passes through the limit frame and is rotatably connected to the limit frame, and a rotating assembly is connected to the upper end of the threaded rod, which is used to drive the threaded rod to rotate.

[0009] Preferably: the rotating assembly includes a gear fixed on the top of the threaded rod, the top of the support seat is fixed with symmetrically distributed support rods, the top of the support rods is fixed with a limiting ring, and the inner side of the limiting ring is provided with multiple groups of teeth distributed in a circle and capable of meshing with the gear.

[0010] Preferably, symmetrically distributed sliding blocks are provided on the outer wall of the threaded sleeve, symmetrically distributed sliding grooves are provided on the inner wall of the sampling tube, and the ends of the sliding blocks are located inside the sliding grooves and are slidably connected to the sliding grooves.

[0011] Preferably: the sealing mechanism includes a sealing block which is arranged inside the containing cylinder and can seal the liquid outlet pipe, a connecting rod is fixed on the top of the sealing block, a sealing column is fixed on the top of the connecting rod, a pressure plate is fixed on the top of the sealing column, the pressure plate is connected to the top of the containing cylinder through a first elastic member, a symmetrically distributed guide rod is fixed to the bottom of the pressure plate, the lower end of the guide rod passes through the top of the containing cylinder and is slidably connected to the top of the containing cylinder, a baffle is fixed to the outside of the rotating rod, a pressure block which can squeeze the pressure plate is fixed to the bottom of the baffle, a fixing component is provided on the inner wall of the containing cylinder, and the fixing component is used to fix the sealing column.

[0012] Preferably: the fixing assembly includes a groove body arranged on the side wall of the containing cylinder, a block is slidably connected inside the groove body, a groove matching the block is provided on the side wall of the sealing column, wherein one end of the block is connected to the inner wall of the groove body through a second elastic member, and the other end of the block is located inside the groove, a guide column is fixed on the outer wall of the containing cylinder, a movable rod passes through the top of the guide column, a traction rope is fixed to the bottom of the movable rod, and the end of the traction rope away from the movable rod is connected to the block, a first magnet is fixed to the top of the movable rod, and a second magnet is fixed to the bottom of the baffle, and the magnetic properties of the first magnet and the second magnet are opposite.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: when performing sterility testing on medical devices, the present invention extracts culture fluid into the culture tube, and pours the test fluid into the containing tube, and the support plate drives the sampling tube to perform circular motion. When the sampling tube rotates to above the test tube, the culture fluid in the sampling tube and the test fluid in the containing tube can automatically enter the test tube, thereby achieving the purpose of microbial detection. There are multiple test tubes and containing tubes, so that the device can perform multiple tests on the culture fluid at the same time, with high detection efficiency, and there is no need for staff to frequently extract culture fluid and test fluid into the test tube, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the overall structure of the detection device in an embodiment of the present invention.

[0015] Figure 2 Schematic diagram of the connection structure between the sampling tube and the support plate in an embodiment of the present invention.

[0016] Figure 3 Schematic diagram of the connection structure between the pressing plate and the containing cylinder in an embodiment of the present invention.

[0017] Figure 4 It is a cross-sectional view of the internal structure of the sampling tube in an embodiment of the present invention.

[0018] Figure 5 It is a cross-sectional view of the internal structure of the containing cylinder in an embodiment of the present invention.

[0019] In the figure: 1-support seat; 2-extraction mechanism; 21-piston; 22-threaded sleeve; 23-slide groove; 24-slider; 25-threaded rod; 26-gear; 27-teeth; 28-limiting ring; 29-support rod; 3-blocking mechanism; 31-pressure plate; 32-sealing column; 33-connecting rod; 34-blocking block; 35-guide rod; 36-first elastic member; 37-baffle; 38-pressure block; 39-first magnet; 310-second magnet; 311-movable rod; 312-traction rope; 313-second elastic member; 314-block; 315-slot; 4-sampling tube; 5-support plate; 6-rotating rod; 7-placing block; 8-placing slot; 9-detection tube; 10-liquid outlet pipe; 11-containing tube. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] In one embodiment, see Figure 1-Figure 5A sterility detection device for medical devices comprises a support base 1, a plurality of detection cylinders 9 and a plurality of containing cylinders 11 distributed in a circle are installed on the top of the support base 1, a rotating rod 6 is passed through the support base 1, a rotating mechanism is connected to the lower end of the rotating rod 6, and the rotating mechanism is used to drive the rotating rod 6 to rotate, a support plate 5 is fixed to the upper end of the rotating rod 6, a sampling cylinder 4 is passed through the support plate 5, and the sampling cylinder 4 is detachably connected to the support plate 5, wherein an extraction mechanism 2 is provided inside the sampling cylinder 4, and the extraction mechanism 2 is used to draw microbial culture liquid into the sampling cylinder 4, and can also discharge the microbial culture liquid into the detection cylinder 9, the bottom of the containing cylinder 11 is connected with a liquid outlet pipe 10, and the end of the liquid outlet pipe 10 away from the containing cylinder 11 is located directly above the detection cylinder 9, and a blocking mechanism 3 is provided inside the containing cylinder 11, and the blocking mechanism 3 is used to block the liquid outlet pipe 10.

[0023] In this embodiment, when the device detects the medical device, it first samples the surface of the medical device and cultures the sample in the culture solution for a period of time, then immerses the lower end of the sampling tube 4 in the culture solution, and extracts the culture solution into the sampling tube 4 through the extraction mechanism 2. After the culture solution is extracted, the sampling tube 4 is connected to the support plate 5, and the detection liquid is poured into the inside of the holding tube 11. At this time, the blocking mechanism 3 blocks the liquid outlet pipe 10, and the detection liquid inside the holding tube 11 cannot enter the detection tube 9 through the liquid outlet pipe 10. Finally, the rotating rod 6 is driven to rotate by the rotating mechanism. The rotating mechanism can be a motor installed at the bottom of the support seat 1. The motor drives the rotating rod 6 to rotate, and the rotating rod 6 drives the sampling tube 4 to make a circular motion through the support plate 5. When the sampling tube 4 rotates to the top of the detection tube 9, the extraction mechanism 2 squeezes the culture solution inside the sampling tube 4, so that the culture solution enters the detection tube 9. At the same time, the blocking mechanism 3 no longer blocks the liquid outlet pipe 10, and the holding tube The detection liquid inside 11 enters the detection tube 9 through the liquid outlet tube 10, and the detection liquid detects the sample in the culture liquid, so as to determine whether there are microorganisms on the surface of the medical device. The detection liquid inside the holding tube 11 can be the same detection liquid or different detection liquids. For example, the detection liquid inside the holding tube 11 can be a chemical indicator. The chemical indicator can detect specific chemical substances produced by microbial metabolism, so as to indirectly indicate the presence of microorganisms. Through the arrangement of multiple detection tubes 9 and holding tubes 11, the culture liquid can be tested multiple times at the same time, and the detection efficiency is high. There is no need for the staff to frequently extract the culture liquid into the detection tube 9, which saves manpower. In addition, the detection liquid can also be a chemical indicator, a biological indicator, etc. The biological indicator uses living microorganisms to detect the presence or activity of other microorganisms. The microorganisms in the culture liquid are detected by different detection liquids, so as to determine whether there are microorganisms on the surface of the medical device, which can further improve the accuracy of the detection results.

[0024] See also Figure 2 The surface of the support plate 5 is provided with a through hole for the sampling tube 4 to pass through, and the side wall of the through hole is provided with symmetrically distributed placement grooves 8, which extend to the top of the support plate 5, and the side wall of the sampling tube 4 is fixed with symmetrically distributed placement blocks 7 that are adapted to the placement grooves 8;

[0025] The arrangement of the placement groove 8 and the placement block 7 facilitates the connection of the placement tube and the support plate 5 by the staff, and also facilitates the removal of the placement tube from the support plate 5, thereby facilitating the sampling tube 4 to extract the culture fluid.

[0026] See also Figure 4 The extraction mechanism 2 includes a piston 21 disposed inside the sampling tube 4, the piston 21 is slidably connected to the inner wall of the sampling tube 4, wherein a threaded sleeve 22 is fixed to the top of the piston 21, the top of the threaded sleeve 22 is threadedly connected to a threaded rod 25, a limiting frame is fixed to the top of the sampling tube 4, the threaded rod 25 penetrates the limiting frame and is rotatably connected to the limiting frame, and a rotating assembly is connected to the upper end of the threaded rod 25, and the rotating assembly is used to drive the threaded rod 25 to rotate;

[0027] When the sampling tube 4 rotates to above the detection tube 9, the rotating assembly drives the threaded rod 25 to rotate. The threaded rod 25 drives the piston 21 to move downward through the threaded connection with the threaded sleeve 22. The piston 21 squeezes the culture fluid below it, thereby squeezing the culture fluid inside the sampling tube 4 into the detection tube 9. When the sampling tube 4 passes over the detection tube 9, the rotating assembly no longer drives the rotating rod 6 to rotate.

[0028] See also Figure 1 , Figure 2 and Figure 4 The rotating assembly includes a gear 26 fixed to the top of the threaded rod 25, a symmetrically distributed support rod 29 is fixed to the top of the support seat 1, a limit ring 28 is fixed to the top of the support rod 29, and a plurality of groups of teeth 27 that are distributed circumferentially and can mesh with the gear 26 are provided on the inner side of the limit ring 28;

[0029] When the sampling tube 4 rotates to above the detection tube 9, the gear 26 at the top of the threaded rod 25 just meshes with the teeth 27 on the inner wall of the limiting ring 28, and the threaded rod 25 is driven to rotate through the meshing of the teeth 27 and the gear 26, so that the piston 21 can squeeze the culture fluid inside the sampling tube 4. When the sampling tube 4 passes over the detection tube 9, the gear 26 just disengages from the meshing of the teeth 27.

[0030] See also Figure 4 The outer wall of the threaded sleeve 22 is provided with symmetrically distributed sliders 24, and the inner wall of the sampling tube 4 is provided with symmetrically distributed slide grooves 23, and the end of the slider 24 is located inside the slide groove 23 and is slidably connected to the slide groove 23;

[0031] The slide groove 23 can limit the threaded sleeve 22 through the slider 24, thereby preventing the threaded sleeve 22 from rotating due to the rotation of the threaded rod 25.

[0032] See also Figure 3 and Figure 5 The blocking mechanism 3 includes a blocking block 34 which is arranged inside the containing tube 11 and can block the liquid outlet pipe 10. A connecting rod 33 is fixed on the top of the blocking block 34. A sealing column 32 is fixed on the top of the connecting rod 33. A pressing plate 31 is fixed on the top of the sealing column 32. The pressing plate 31 is connected to the top of the containing tube 11 through a first elastic member 36. A symmetrically distributed guide rod 35 is fixed to the bottom of the pressing plate 31. The lower end of the guide rod 35 passes through the top of the containing tube 11 and is slidably connected to the top of the containing tube 11. A baffle 37 is fixed to the outside of the rotating rod 6. A pressing block 38 which can squeeze the pressing plate 31 is fixed to the bottom of the baffle 37. A fixing component is provided on the inner wall of the containing tube 11, and the fixing component is used to fix the sealing column 32.

[0033] When the culture fluid is tested, the blocking block 34 blocks the liquid outlet pipe 10, and the culture fluid in the holding tube 11 cannot enter the detection tube 9 through the liquid outlet pipe 10. When the sampling tube 4 is rotated to the top of the detection tube 9, the fixing assembly on the side wall of the holding tube 11 no longer fixes the sealing column 32, and the sealing column 32 automatically resets under the action of the pressing plate 31 and the first elastic member 36. The first elastic member 36 can be a spring. The sealing column 32 drives the blocking block 34 to move upward through the connecting rod 33, and the blocking block 34 no longer blocks the liquid outlet pipe 10. At this time, the detection fluid in the holding tube 11 can enter the detection tube 9 through the liquid outlet pipe 10. When the sampling tube 4 is rotated to the top of the detection tube 9, the fixing assembly on the side wall of the holding tube 11 no longer fixes the sealing column 32. The sealing column 32 automatically resets under the action of the pressing plate 31 and the first elastic member 36. The first elastic member 36 can be a spring. The sealing column 32 drives the blocking block 34 to move upward through the connecting rod 33. The blocking block 34 no longer blocks the liquid outlet pipe 10. At this time, the detection fluid in the holding tube 11 can enter the detection tube 9 through the liquid outlet pipe 10. When passing over the detection tube 9, the baffle 37 squeezes the pressure plate 31 through the pressure block 38, wherein the pressure block 38 can be conical, and the pressure plate 31 drives the sealing block 34 to move downward through the sealing column 32 and the connecting rod 33, so that the sealing block 34 is tightly fitted with the bottom of the containing tube 11, and the sealing block 34 blocks the liquid outlet pipe 10 again. At the same time, the fixing assembly fixes the sealing column 32 again, thereby ensuring the stability of the sealing column 32, and then ensuring the sealing effect of the sealing block 34 on the liquid outlet pipe 10. In addition, in order to facilitate the staff to pour the detection liquid into the inside of the containing tube 11, a liquid inlet (not marked in the figure) can be set on the side wall of the containing tube 11.

[0034] See also Figure 5The fixing assembly includes a slot body arranged on the side wall of the containing cylinder 11, a block 314 is slidably connected inside the slot body, a slot 315 adapted to the block 314 is arranged on the side wall of the sealing column 32, one end of the block 314 is connected to the inner wall of the slot body through a second elastic member 313, and the other end of the block 314 is located inside the slot 315, a guide column is fixed on the outer wall of the containing cylinder 11, a movable rod 311 passes through the top of the guide column, a traction rope 312 is fixed to the bottom of the movable rod 311, and one end of the traction rope 312 away from the movable rod 311 is connected to the block 314, a first magnet 39 is fixed to the top of the movable rod 311, a second magnet 310 is fixed to the bottom of the baffle 37, and the magnetic properties of the first magnet 39 and the second magnet 310 are opposite;

[0035] When the sampling tube 4 rotates to above the detection tube 9, the second magnet 310 at the bottom of the baffle 37 just rotates to above the first magnet 39. At this time, the mutual attraction between the first magnet 39 and the second magnet 310 drives the movable rod 311 to move upward, and the movable rod 311 pulls the block 314 out of the slot 315 through the traction rope 312, thereby releasing the fixation of the sealing column 32 by the block 314, and the sealing column 32 automatically moves upward. When the second magnet 310 passes over the first magnet 39, the first magnet 39 and the second magnet 310 are no longer attracted to each other, and the end of the block 314 is connected to the side wall of the sealing column 32 under the action of the second elastic member 313, so that the block 314 can enter the slot 315 again, wherein the second elastic member 313 can be a spring.

[0036] Working principle: When the device detects the medical device, the surface of the medical device is first sampled, and the sample is cultured in the culture solution for a period of time, then the lower end of the sampling tube 4 is immersed in the culture solution, and the culture solution is extracted into the sampling tube 4 through the extraction mechanism 2. After the culture solution is extracted, the sampling tube 4 is connected to the support plate 5, and the detection liquid is poured into the inside of the holding tube 11. Then, the support plate 5 and the baffle 37 are driven to rotate by the rotating rod 6, and the support plate 5 drives the sampling tube 4 to move in a circle. When the sampling tube 4 rotates to the top of the detection tube 9, the gear 26 at the top of the threaded rod 25 is just The threaded rod 25 is driven to rotate by the meshing of the teeth 27 and the gear 26. The threaded rod 25 drives the piston 21 to move downward through the threaded connection with the threaded sleeve 22. The piston 21 squeezes the culture fluid below it, thereby squeezing the culture fluid inside the sampling tube 4 into the detection tube 9. When the sampling tube 4 passes over the detection tube 9, the gear 26 just loses the meshing of the teeth 27. In addition, when the sampling tube 4 rotates to the top of the detection tube 9, the second magnet 310 at the bottom of the baffle 37 just rotates to the top of the first magnet 39. At this time, the first magnet The mutual attraction between the first magnet 39 and the second magnet 310 drives the movable rod 311 to move upward, and the movable rod 311 pulls the block 314 out of the slot 315 through the traction rope 312, thereby releasing the fixation of the block 314 on the sealing column 32, and the sealing column 32 drives the blocking block 34 to move upward through the connecting rod 33, and the blocking block 34 no longer blocks the liquid outlet pipe 10. At this time, the detection liquid in the containing tube 11 can enter the detection tube 9 through the liquid outlet pipe 10. When the sampling tube 4 passes over the detection tube 9, the first magnet 39 and the second magnet 310 are no longer attracted to each other. At this time, the baffle 37 passes through The pressing block 38 squeezes the pressing plate 31, and the pressing plate 31 drives the sealing block 34 to move downward through the sealing column 32 and the connecting rod 33, so that the sealing block 34 is tightly fitted with the bottom of the containing tube 11, and the sealing block 34 blocks the liquid outlet pipe 10 again. At the same time, the card block 314 automatically enters the card groove 315, thereby fixing the sealing column 32 again. Through the arrangement of multiple detection tubes 9 and the containing tube 11 distributed in a circle, the culture fluid can be tested multiple times at the same time, the detection efficiency is high, and the staff does not need to frequently extract the culture fluid into the detection tube 9, saving manpower.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sterility detection device for medical devices, comprising a support seat; characterized in that: A plurality of detection cylinders and a plurality of containing cylinders distributed in a circle are installed on the top of the support seat, a rotating rod passes through the inside of the support seat, a rotating mechanism is connected to the lower end of the rotating rod, the rotating mechanism is used to drive the rotating rod to rotate, a support plate is fixed to the upper end of the rotating rod, a sampling cylinder passes through the inside of the support plate, the sampling cylinder and the support plate are detachably connected, wherein an extraction mechanism is provided inside the sampling cylinder, the extraction mechanism is used to draw the microbial culture liquid into the sampling cylinder, and can also discharge the microbial culture liquid into the detection cylinder, the bottom of the containing cylinder is connected to a liquid outlet pipe, the end of the liquid outlet pipe away from the containing cylinder is located directly above the detection cylinder, and a sealing mechanism is provided inside the containing cylinder, the sealing mechanism is used to seal the liquid outlet pipe.

2. A sterility detection device for medical devices according to claim 1, characterized in that: The support plate surface is provided with a through hole for the sampling tube to pass through, the through hole side wall is provided with symmetrically distributed placement grooves, the placement grooves extend to the top of the support plate, and the sampling tube side wall is fixed with symmetrically distributed placement blocks that are adapted to the placement grooves.

3. A sterility detection device for medical devices according to claim 1, characterized in that: The extraction mechanism includes a piston arranged inside the sampling barrel, the piston is slidably connected to the inner wall of the sampling barrel, wherein a threaded sleeve is fixed on the top of the piston, the top of the threaded sleeve is threadedly connected to a threaded rod, a limit frame is fixed on the top of the sampling barrel, the threaded rod passes through the limit frame and is rotatably connected to the limit frame, and a rotating assembly is connected to the upper end of the threaded rod, which is used to drive the threaded rod to rotate.

4. A sterility detection device for medical devices according to claim 3, characterized in that: The rotating assembly includes a gear fixed on the top of the threaded rod, a symmetrically distributed support rod is fixed on the top of the support seat, a limiting ring is fixed on the top of the support rod, and a plurality of groups of teeth distributed in a circle and capable of meshing with the gear are arranged on the inner side of the limiting ring.

5. A sterility detection device for medical devices according to claim 3, characterized in that: The outer wall of the threaded sleeve is provided with symmetrically distributed sliding blocks, the inner wall of the sampling tube is provided with symmetrically distributed sliding grooves, and the end of the sliding block is located inside the sliding groove and is slidably connected to the sliding groove.

6. A sterility detection device for medical devices according to claim 1, characterized in that: The sealing mechanism includes a sealing block which is arranged inside the containing tube and can seal the liquid outlet pipe, a connecting rod is fixed on the top of the sealing block, a sealing column is fixed on the top of the connecting rod, a pressure plate is fixed on the top of the sealing column, the pressure plate is connected to the top of the containing tube through a first elastic member, a symmetrically distributed guide rod is fixed to the bottom of the pressure plate, the lower end of the guide rod passes through the top of the containing tube and is slidably connected to the top of the containing tube, a baffle is fixed to the outside of the rotating rod, a pressure block which can squeeze the pressure plate is fixed to the bottom of the baffle, a fixing component is provided on the inner wall of the containing tube, and the fixing component is used to fix the sealing column.

7. A sterility detection device for medical devices according to claim 6, characterized in that: The fixing assembly includes a groove body arranged on the side wall of the containing cylinder, a card block is slidably connected inside the groove body, a card slot matching the card block is provided on the side wall of the sealing column, wherein one end of the card block is connected to the inner wall of the groove body through a second elastic member, and the other end of the card block is located inside the card slot, a guide column is fixed on the outer wall of the containing cylinder, a movable rod passes through the top of the guide column, a traction rope is fixed to the bottom of the movable rod, and the end of the traction rope away from the movable rod is connected to the card block, a first magnet is fixed to the top of the movable rod, and a second magnet is fixed to the bottom of the baffle, and the magnetic properties of the first magnet and the second magnet are opposite.

Images