Air tightness detection equipment and detection method for hemodialyzer

Abstract

The invention discloses air tightness detection equipment and a detection method for a hemodialyzer, and relates to the technical field of dialyzer detection. A walking gear synchronously rotating with the airtightness detection cylinder is arranged below the airtightness detection cylinder, a gear transmission part meshed with the dialyzer mounting mechanism is rotationally arranged between a first meshing part and a second meshing part, the first meshing part is used for controlling rotation of the walking gear, and the second meshing part is used for controlling rotation of the gear transmission part. The airtight detection cylinder, the closed flow guide parts and the dialyzer body in butt joint between the two closed flow guide parts form a detection flow channel, a light source sensor is installed at the bottom in the airtight detection cylinder, and a distance measuring piston capable of being elastically reset is arranged in the airtight detection cylinder in a sliding mode. According to the device, the airtightness detection mechanism is controlled to move rightwards to the detection position, so that the second meshing part drives the dialyzer mounting mechanism to rotate anticlockwise, and then switching of dialyzer bodies at the detection positions on the left side and the right side is achieved, and batch automatic detection of the dialyzer bodies is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of dialyzer detection, and in particular relates to an airtightness detection device and a detection method for a hemodialyzer. Background Art

[0002] The hemodialyzer mainly uses the principle of semi-permeable membrane to introduce the patient's blood and dialysate into the dialyzer at the same time. The two flow in opposite directions on both sides of the dialysis membrane. With the help of the solute gradient, osmotic gradient and water pressure gradient on both sides of the membrane, toxins and excess water retained in the body are removed, while replenishing the substances needed by the body.

[0003] In the prior art, a hemodialyzer includes a columnar component (hemofilter) for hemodialysis treatment, an upper blood chamber port is provided on the top of the columnar component, a lower blood chamber port is provided on the bottom of the columnar component, and two hemodialysis ports arranged vertically are installed on the circumference of the columnar component. During the production process of the hemodialyzer, its relevant components need to be tested for sealing to screen out unqualified hemodialyzer products.

[0004] However, after completing the test of one hemodialyzer, the existing hemodialyzer air tightness testing equipment needs to remove the tested hemodialyzer and reinstall the hemodialyzer to be tested before continuing the air tightness testing operation. This makes it impossible to achieve batch air tightness testing of hemodialyzers, thereby reducing the testing efficiency of hemodialyzers. To this end, we provide an air tightness testing device and a testing method for hemodialyzers to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an airtightness detection device and a detection method for a hemodialyzer, which solves the problems in the above-mentioned background technology through the specific structural design of the detection support mechanism, dialyzer installation mechanism, airtightness detection mechanism, transposition control mechanism and dialyzer positioning mechanism.

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is an airtightness detection device, comprising a detection carrying mechanism, the detection carrying mechanism comprising a detection carrying platform, a circular detection cavity is opened at the center of the detection carrying platform, a dialyzer mounting mechanism coaxially arranged and rotatably arranged inside the circular detection cavity, a plurality of dialyzer bodies are arranged in a circumferential array on the top of the dialyzer mounting mechanism; an airtightness detection mechanism, the airtightness detection mechanism is arranged inside the circular detection cavity and horizontally slides with the detection carrying mechanism, the airtightness detection mechanism comprises a vertically arranged airtightness detection cylinder, a traveling gear rotating synchronously with the airtightness detection cylinder is arranged below the airtightness detection cylinder, and the traveling gear is controlled by The rotation of the airtight detection cylinder is realized by rotation; and a transposition control mechanism, the transposition control mechanism is arranged below the detection support platform and is horizontally slidably matched with the detection support mechanism, the transposition control mechanism is fixedly installed at the bottom of the airtight detection mechanism, the transposition control mechanism includes a first meshing portion and a second meshing portion arranged parallel to each other, a gear transmission portion that is rotatably arranged between the first meshing portion and the second meshing portion and meshes with the dialyzer mounting mechanism, the first meshing portion is used to control the rotation of the traveling gear, and the second meshing portion is used to control the rotation of the gear transmission portion, and the rotation of the dialyzer mounting mechanism is realized by controlling the rotation of the gear transmission portion.

[0007] Two sealed flow guides are symmetrically arranged on one side of the airtight detection cylinder. The airtight detection cylinder, the sealed flow guide and the dialyzer body connected between the two sealed flow guides constitute a detection flow channel. The detection airflow is transported to the airtight detection cylinder and the corresponding dialyzer body through the detection flow channel. A light source sensor is installed at the bottom of the airtight detection cylinder. An elastically resettable distance measuring piston is slidably arranged inside the airtight detection cylinder. By detecting the change in the distance between the distance measuring piston and the light source sensor, it is determined whether the corresponding dialyzer body has a sealing defect.

[0008] The present invention is further configured such that the detection carrying mechanism also includes a detection carrying frame, the detection carrying frame is fixedly mounted on the bottom of the detection carrying platform, a limited position slide is provided at the bottom of the detection carrying frame, a limited position groove is provided on one side of the detection carrying frame, two lower extension mounting plates are symmetrically fixedly provided at the bottom of the detection carrying frame, a detection control shaft is rotatably provided between the lower extension mounting plates, and the detection control shaft is connected to the output end of the detection control motor mounted on the surface of one of the lower extension mounting plates.

[0009] The present invention is further configured such that the airtight detection mechanism also includes a horizontally movable seat that is slidably fitted inside a limiting slide, the horizontally movable seat is sleeved on the detection control shaft and the two are threadedly fitted, a vertical support shaft is rotatably provided on the top of the horizontally movable seat, the airtight detection cylinder is fixedly sleeved on the vertical support shaft, a first elastic member connected to the ranging piston is provided at the bottom inner side of the airtight detection cylinder, and an air inlet joint is installed on the peripheral side of the airtight detection cylinder close to the top position.

[0010] The present invention is further configured as follows: the walking gear is fixedly mounted on the side surface of the vertical support shaft close to the horizontal moving seat; a first horizontal seat fixedly connected to the vertical support shaft is provided above the walking gear; a second horizontal seat is fixedly provided on the top of the vertical support shaft; a closed air guide portion is slidably provided on the first horizontal seat and the second horizontal seat, and a lifting plate is fixedly provided on the side surface of the closed air guide portion; a bidirectional screw is rotatably provided between the first horizontal seat and the second horizontal seat, the lifting plate is sleeved on the bidirectional screw and the two are threadedly matched, a docking control motor is installed on the U-shaped motor seat on the top of the second horizontal seat, and the output end of the docking control motor is connected to the bidirectional screw; a first magnetic plate is fixedly installed on the side of the second horizontal seat away from the vertical support shaft, and an electromagnet is installed at the bottom of the first magnetic plate.

[0011] The present invention is further configured such that a detection air supply device is installed on the top of the first horizontal seat, and the air outlet end of the detection air supply device is connected to the air inlet of the closed guide part on the first horizontal seat via a guide hose, and the air inlet end of the air inlet connector is connected to the air outlet of the closed guide part on the second horizontal seat via a guide hose, the closed guide part on the first horizontal seat is used to dock with the lower blood chamber port on the dialyzer body, and the closed guide part on the second horizontal seat is used to dock with the upper blood chamber port on the dialyzer body.

[0012] The present invention is further configured as follows: the shift control mechanism also includes a first support frame fixedly arranged on the horizontally movable seat, a second support frame fixedly arranged on the side of the detection carrier close to the limiting groove, the output end of the telescopic cylinder installed on the second support frame is connected to the first meshing portion, a third support frame is fixedly arranged on the top of the first support frame, and one side of the third support frame is connected to the first transmission gear through a rotating shaft; the second meshing portion is slidably arranged on the third support frame, and the third support frame is slidably matched with the limiting groove, a third meshing portion is slidably arranged between the first meshing portion and the second meshing portion, a fourth meshing portion is fixedly arranged on the side of the second meshing portion away from the detection carrier, and the first transmission gear is meshed between the third meshing portion and the fourth meshing portion.

[0013] The present invention is further configured as follows: the dialyzer mounting mechanism includes a support ring rotatably arranged inside a circular detection cavity; the top of the support ring is connected to a dialyzer mounting seat coaxial with the support ring through a support plate; a plurality of dialyzer mounting grooves are arranged in a circumferential array on the top of the dialyzer mounting seat; a positioning hole is provided at the bottom of the dialyzer mounting groove; a positioning port connected to the corresponding dialyzer mounting groove is provided on the circumferential side of the dialyzer mounting seat; the bottom of the support ring is connected to an inner gear ring coaxial with the support ring through a support plate; the gear transmission part includes a linkage shaft rotatably arranged on the top of the second support frame; a second transmission gear and a third transmission gear are fixedly installed on the circumferential side of the linkage shaft; the second transmission gear is arranged on the inner side of the inner gear ring and the two are meshed with each other, and the position of the third transmission gear is adapted to the second meshing part.

[0014] The present invention is further configured as follows: the present invention also includes a dialyzer positioning mechanism; wherein, the dialyzer positioning mechanism includes a fixed ring fixedly mounted on the bottom of the dialyzer mounting seat, and a dialyzer positioning assembly corresponding to the dialyzer body is fixedly mounted on the side surface of the fixed ring; the dialyzer positioning assembly includes a fourth support frame fixedly mounted on the side surface of the fixed ring, and two internally threaded tubes arranged up and down are rotatably arranged on the fourth support frame, and a transmission wheel is fixedly mounted on the end of the internally threaded tube, and the two transmission wheels are connected by a transmission belt; the internal thread of the internally threaded tube is fitted with a horizontal screw, and a horizontal sealing part is fixedly mounted on the end of the horizontal screw, and the two horizontal sealing parts are fixedly connected by a vertical connecting plate.

[0015] A vertical movable frame is slidingly provided on the surface of the fourth support frame, and the vertical movable frame is connected to the fixed plate on the fourth support frame by a second elastic member. A second magnetic plate is fixedly installed on the top of the vertical movable frame, and the permanent magnet installed on the top of the second magnetic plate and the electromagnet magnetically repel each other. The horizontal blocking portion is used to dock with the dialysis port on the corresponding dialyzer body, and a vertical tooth plate is fixedly provided on the bottom of the vertical movable frame, and the vertical tooth plate is engaged with the fourth transmission gear fixed on the corresponding internal threaded tube.

[0016] The present invention has the following beneficial effects: 1. The present invention controls the entire airtight detection mechanism (toward the right side) to move smoothly and horizontally to the right side to the detection position on the right side. The second meshing portion that moves synchronously with the airtight detection mechanism drives the third transmission gear to rotate, and the second transmission gear that rotates synchronously with the third transmission gear drives the inner gear ring to rotate (counterclockwise), thereby driving the entire dialyzer installation mechanism to rotate counterclockwise. When the airtight detection mechanism (toward the right side) moves smoothly and horizontally to the right side to the detection position on the right side, the dialyzer body that has completed the detection on the right side rotates counterclockwise to leave the detection position, and the dialyzer body at the next position rotates counterclockwise to the detection position on the right side. On the left side, similarly, the dialyzer body that has completed the inspection on the left side rotates counterclockwise to leave the inspection position, and the dialyzer body at the next position rotates counterclockwise to the inspection position on the left side, thereby simultaneously realizing the switching of the dialyzer bodies at the inspection positions on the left and right sides. After the inspection of the dialyzer body at the inspection position on the right side is completed again, the first meshing part moves to engage with the traveling gear again through the forward movement of the telescopic cylinder, and subsequently the air tightness inspection of the dialyzer body at the inspection position on the left side is realized again through the same control method as mentioned above. In this way, batch automatic inspection of the dialyzer body can be realized, thereby greatly improving the efficiency of air tightness inspection.

[0017] 2. The present invention uses a detection air supply device to transport air into the dialyzer body at the detection position. The air entering the dialyzer body enters the airtight detection cylinder through a hose. When air is continuously transported into the airtight detection cylinder, a downward thrust is generated on the distance measuring piston, thereby causing compression deformation of the first elastic member. During this process, the distance value between the light source sensor and the distance measuring piston detected by the light source sensor gradually decreases until the distance value between the light source sensor and the distance measuring piston reaches a set value. At this time, the detection air supply device stops running and the detection flow channel is closed. After a period of time, if the distance value received by the controller changes significantly (the distance value gradually increases), it indicates that the dialyzer body has a sealing defect problem (i.e., an unqualified product); otherwise, it indicates that the dialyzer body does not have a sealing defect problem (i.e., a qualified product).

[0018] 3. The present invention controls the entire airtightness detection mechanism (toward the right) to move horizontally and smoothly to the left to the initial position. At this time, the electromagnet is again aligned with the detection position on the right. Under the action of the magnetic repulsive force, the dialyzer port of the dialyzer body at this position is again separated from the corresponding horizontal blocking portion. In the same manner, the dialyzer body at the detection position is removed from the corresponding dialyzer mounting slot. The second meshing portion is again controlled by the telescopic cylinder to move to mesh with the third transmission gear. Then, the entire airtightness detection mechanism (toward the right) is again controlled to move horizontally and smoothly to the right to the detection position on the right. At this time, the entire dialyzer mounting mechanism is again rotated counterclockwise by the same angle. The dialyzer body at the next position is moved to the detection position on the right. The second meshing portion is again controlled by the telescopic cylinder to move in the opposite direction to disengage the third transmission gear and return to the initial position. The dialyzer body at this position is again removed from the corresponding dialyzer mounting slot in the same manner. This cyclic control method is used to remove and remove all dialyzer bodies that have completed testing on the dialyzer mounting mechanism. After all dialyzer bodies are removed, the next batch of dialyzer bodies can be inspected.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The figure is a structural diagram of an air tightness detection device.

[0022] Figure 2 for Figure 1 top view of the structure.

[0023] Figure 3 for Figure 1 The structural front view.

[0024] Figure 4 for Figure 1 Schematic diagram of part of the structure.

[0025] Figure 5 for Figure 4 Schematic diagram of part of the structure.

[0026] Figure 6 for Figure 5 The structural front view.

[0027] Figure 7It is a structural schematic diagram of the transposition control mechanism in the present invention.

[0028] Figure 8 It is a structural schematic diagram of the airtight detection mechanism in the present invention.

[0029] Figure 9 for Figure 8 The structural front view.

[0030] Figure 10 for Figure 8 Diagram of the internal structure of the airtightness detection cylinder.

[0031] Figure 11 Schematic diagram of the structure of the dialyzer body in the present invention.

[0032] Figure 12 It is a structural diagram of the dialyzer installation mechanism in the present invention.

[0033] Figure 13 Schematic diagram of the structure of the dialyzer positioning mechanism in the present invention.

[0034] Figure 14 Schematic diagram of the structure of the dialyzer positioning component of the present invention.

[0035] Figure 15 for Figure 14 side view of the structure.

[0036] In the accompanying drawings, the components represented by the reference numerals are as follows: 1-Detection bearing mechanism, 101-Detection bearing platform, 102-Circular detection cavity, 103-Detection bearing frame, 104-Limiting slide, 105-Limiting groove, 106-Detection control shaft, 107-Detection control motor, 2-Dialex mounting mechanism, 201-Support ring, 202-Dialex mounting seat, 203-Dialex mounting groove, 204-Location hole, 205-Location port, 206-Inner gear ring, 3-Dialex body, 30 1-lower blood chamber port, 302-upper blood chamber port, 303-dialysis port, 4-airtightness detection mechanism, 401-airtightness detection cylinder, 402-travel gear, 403-sealed flow guide, 404-light source sensor, 405-distance measuring piston, 406-horizontal moving seat, 407-vertical support shaft, 408-first elastic member, 409-air inlet connector, 410-first horizontal seat, 411-second horizontal seat, 412-lifting plate, 413-double Screw, 414- docking control motor, 415- first magnetic plate, 416- detection air supply equipment, 5- transposition control mechanism, 501- first meshing part, 502- second meshing part, 503- first support frame, 504- second support frame, 505- telescopic cylinder, 506- third support frame, 507- first transmission gear, 508- third meshing part, 509- fourth meshing part, 510- second transmission gear, 511- third Transmission gear, 6-dialyzer positioning mechanism, 7-fixing ring, 8-dialyzer positioning assembly, 801-fourth support frame, 802-inner threaded tube, 803-transmission wheel, 804-transmission belt, 805-horizontal screw, 806-horizontal sealing part, 807-vertical connecting plate, 808-vertical movable frame, 809-fixing plate, 810-second elastic member, 811-second magnetic plate, 812-vertical tooth plate, 813-fourth transmission gear. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] For specific embodiment 1, please refer to Figure 1-15The present invention is an airtightness detection device, comprising a detection carrying mechanism 1, an airtightness detection mechanism 4 and a transposition control mechanism 5; the detection carrying mechanism 1 comprises a detection carrying platform 101, a circular detection cavity 102 is provided at the center of the detection carrying platform 101, a dialyzer mounting mechanism 2 coaxially arranged inside the circular detection cavity 102, and a plurality of dialyzer bodies 3 (specifically, blood filters) are arranged in a circumferential array on the top of the dialyzer mounting mechanism 2; the airtightness detection mechanism 4 is arranged inside the circular detection cavity 102 and horizontally slides with the detection carrying mechanism 1, the airtightness detection mechanism 4 comprises a vertically arranged airtightness detection cylinder 401, a traveling gear 402 that rotates synchronously with the airtightness detection cylinder 401 is provided below the airtightness detection cylinder 401, and the rotation of the traveling gear 402 is controlled to achieve the rotation of the airtightness detection cylinder 401; The transposition control mechanism 5 is arranged below the detection carrier 101 and is horizontally slidably matched with the detection carrier mechanism 1. The transposition control mechanism 5 is fixedly mounted on the bottom of the airtight detection mechanism 4. The transposition control mechanism 5 includes a first meshing portion 501 and a second meshing portion 502 arranged parallel to each other. A gear transmission portion meshing with the dialyzer mounting mechanism 2 is rotatably arranged between the first meshing portion 501 and the second meshing portion 502. The first meshing portion 501 is used to control the rotation of the traveling gear 402, and the second meshing portion 502 is used to control the rotation of the gear transmission portion. The rotation of the dialyzer mounting mechanism 2 is achieved by controlling the rotation of the gear transmission portion. Two sealed flow guides 403 are symmetrically arranged on one side of the airtight detection cylinder 401. The airtight detection cylinder 401, the sealed flow guide 403 and the dialyzer body 3 connected between the two sealed flow guides 403 constitute a detection flow channel, through which the detection airflow is transported to the airtight detection cylinder 401 and the corresponding dialyzer body 3. A light source sensor 404 (such as a laser ranging sensor) is installed at the bottom of the airtight detection cylinder 401. An elastically resettable ranging piston 405 is slidably provided inside the airtight detection cylinder 401. By detecting the change in the distance between the ranging piston 405 and the light source sensor 404, it is determined whether the corresponding dialyzer body 3 has a sealing defect.

[0039] In this embodiment of the present invention, the detection supporting mechanism 1 also includes a detection supporting frame 103, which is fixedly mounted on the bottom of the detection supporting platform 101 (the detection supporting frame 103 is mounted on an external frame to support the entire equipment), and a limited position slide 104 is provided at the bottom of the detection supporting frame 103, and a limited position groove 105 is provided on one side of the detection supporting frame 103. Two lower extension mounting plates are symmetrically fixed at the bottom of the detection supporting frame 103, and a detection control shaft 106 is rotatably arranged between the lower extension mounting plates. The detection control shaft 106 is connected to the output end of the detection control motor 107 mounted on the surface of one of the lower extension mounting plates. The horizontal movement of the entire airtight detection mechanism 4 is controlled by the detection control motor 107.

[0040] In this embodiment of the present invention, the airtight detection mechanism 4 also includes a horizontally movable seat 406 that slides in the limit slide 104. The horizontally movable seat 406 is sleeved on the detection control shaft 106 and the two are threadedly matched. A vertical support shaft 407 is rotatably provided on the top of the horizontally movable seat 406. The airtight detection cylinder 401 is fixedly sleeved on the vertical support shaft 407. A first elastic member 408 connected to the ranging piston 405 is provided at the bottom of the airtight detection cylinder 401. When air is continuously supplied to the inside of the airtight detection cylinder 401, a downward thrust can be generated on the ranging piston 405, thereby causing compression deformation of the first elastic member 408. During this process, the distance value between the light source sensor 404 and the ranging piston 405 gradually decreases. An air inlet connector 409 is installed on the side surface of the airtight detection cylinder 401 close to the top.

[0041] In this embodiment of the present invention, the traveling gear 402 is fixedly mounted on the side surface of the vertical support shaft 407 close to the horizontal movable seat 406. A first horizontal seat 410 fixedly connected to the vertical support shaft 407 is provided above the traveling gear 402. A second horizontal seat 411 is fixedly provided on the top of the vertical support shaft 407. A closed guide portion 403 is slidably provided on each of the first horizontal seat 410 and the second horizontal seat 411. A lifting plate 412 is fixedly provided on the side surface of the closed guide portion 403. A bidirectional screw 413 is rotatably provided between the first horizontal seat 410 and the second horizontal seat 411, the lifting plate 412 is sleeved on the bidirectional screw 413 and the two are threadedly matched, a docking control motor 414 is installed on the U-shaped motor seat at the top of the second horizontal seat 411, and the output end of the docking control motor 414 is connected to the bidirectional screw 413, and a first magnetic plate 415 is fixedly installed on the side of the second horizontal seat 411 away from the vertical support shaft 407, and an electromagnet is installed at the bottom of the first magnetic plate 415; when the docking control motor 414 is started, By driving the bidirectional screw 413 to rotate, the upper and lower sealed guide parts 403 can be controlled to move closer to or away from each other. When the airtightness detection mechanism 4 is moved horizontally to the corresponding position of the dialyzer body 3, the two sealed guide parts 403 can be controlled to move closer to each other by the docking control motor 414 to achieve tight docking with the dialyzer body 3. After completing the airtightness detection of the corresponding dialyzer body 3, the two sealed guide parts 403 can be controlled to move away from each other by the docking control motor 414 to release the tight docking with the dialyzer body 3.

[0042] In this embodiment of the present invention, a detection air supply device 416 is installed on the top of the first horizontal seat 410, and the air outlet end of the detection air supply device 416 is connected to the air inlet of the closed guide part 403 on the first horizontal seat 410 via a guide hose, and the air inlet end of the air inlet connector 409 is connected to the air outlet of the closed guide part 403 on the second horizontal seat 411 via a guide hose. The closed guide part 403 on the first horizontal seat 410 is used to dock with the lower blood chamber port 301 on the dialyzer body 3, and the closed guide part 403 on the second horizontal seat 411 is used to dock with the upper blood chamber port 302 on the dialyzer body 3. On the basis of this structure, a detection flow channel is constructed by tightly docking a dialyzer body 3.

[0043] like Figure 1 and Figure 2 As shown, the airtight detection mechanism 4 is in the initial position at this time (that is, the airtight detection cylinder 401 is at the axial position of the dialyzer mounting mechanism 2). When the detection control motor 107 is started by the controller to drive the detection control shaft 106 to rotate forward, the airtight detection mechanism 4 moves smoothly and horizontally to the right along the detection carrier 103 (the airtight detection mechanism 4 will not rotate during this process). When the detection control motor 107 is suspended, the airtight guide part 403 on the first horizontal seat 410 is just aligned with the lower blood chamber port 301 on the dialyzer body 3 at the corresponding position, and the airtight guide part 403 on the second horizontal seat 411 is just aligned with the upper blood chamber port 302 on the dialyzer body 3 at the corresponding position. Then the controller starts the docking control motor 414 to control the bidirectional screw 413 to rotate forward, so that the upper and lower airtight guide parts 403 approach each other until they are tightly docked with the lower blood chamber port 301 and the upper blood chamber port 302. At this time, the construction of a closed detection flow channel is completed; Then, the detection air supply device 416 is started to supply air to the dialyzer body 3 at that position. The air entering the dialyzer body 3 enters the airtightness detection cylinder 401 through the hose (which will not be deformed by gas). When air is continuously supplied to the airtightness detection cylinder 401, a downward thrust is generated on the distance measuring piston 405, thereby causing the first elastic member 408 to be compressed and deformed. During this process, the distance value between the light source sensor 404 and the distance measuring piston 405 detected by the light source sensor 404 gradually decreases until the distance value between the light source sensor 404 and the distance measuring piston 405 reaches the set value. At this time, the detection air supply device 416 stops operating and the detection flow channel is closed. After a period of time, if the distance value received by the controller changes significantly (the distance value gradually increases), it indicates that the dialyzer body 3 has an airtightness defect problem (i.e., an unqualified product). Otherwise, it indicates that the dialyzer body 3 does not have an airtightness defect problem (i.e., a qualified product). After completing the airtightness test of the dialyzer body 3, the controller starts the docking control motor 414 again to control the bidirectional screw 413 to rotate in the opposite direction, so that the upper and lower sealed guide parts 403 move away from each other until the tight docking of the lower blood chamber port 301 and the upper blood chamber port 302 is released. At this time, the upper and lower sealed guide parts 403 return to their initial positions, and the dialyzer body 3 and the airtightness test cylinder 401 are depressurized. The elastic restoring force of the first elastic member 408 causes the ranging piston 405 to move up and reset (that is, the distance between the ranging piston 405 and the light source sensor 404 is restored to the initial value, and the distance between the two is the largest). Then, the first meshing part 501 is controlled to move The first meshing portion 501 is then controlled to move in the opposite direction to disengage the airtightness detection mechanism 4 from the traveling gear 402. Then, the detection control motor 107 is continued to drive the detection control shaft 106 to rotate in the opposite direction, so that the airtight detection mechanism 4 continues to move smoothly horizontally to the left. When the detection control motor 107 is suspended, the sealed guide part 403 on the first horizontal seat 410 is just aligned with the lower blood chamber port 301 on the dialyzer body 3 at the corresponding position (on the left side), and the sealed guide part 403 on the second horizontal seat 411 is just aligned with the upper blood chamber port 302 on the dialyzer body 3 at the corresponding position (on the left side). Then the controller starts the docking control motor 414 to control the bidirectional screw 413 to rotate forward, so that the upper and lower sealed guide parts 403 approach each other until they are tightly docked with the lower blood chamber port 301 and the upper blood chamber port 302. At this time, the docking is completed. A closed detection flow channel is constructed, and then the same control method as above is used to complete the air-tightness detection of the dialyzer body 3 on the left (all the data and position information of the completed detection are recorded on the display interface of the control system). After completing the air-tightness detection of the dialyzer body 3 on the left, the first meshing part 501 is controlled to move again to achieve engagement with the traveling gear 402, and then the detection control motor 107 drives the detection control shaft 106 to rotate forward, so that the air-tightness detection mechanism 4 can move to the right while rotating clockwise until the air-tightness detection mechanism 4 returns to the initial position. At this time, the air-tightness detection mechanism 4 is facing the right again, and then the first meshing part 501 is controlled to move in the opposite direction to disengage from the traveling gear 402.

[0044] Specific embodiment 2, on the basis of specific embodiment 1, the transposition control mechanism 5 further includes a first support frame 503 fixedly provided on the horizontal movable seat 406, a second support frame 504 is fixedly provided on the side of the detection carrier 103 close to the limiting groove 105, an output end of a telescopic cylinder 505 installed on the second support frame 504 is connected to the first meshing portion 501, and the meshing relationship between the first meshing portion 501 and the traveling gear 402 is controlled by the telescopic movement of the telescopic cylinder 505, a third support frame 506 is fixedly provided on the top of the first support frame 503, and one side of the third support frame 506 is connected to the first transmission gear 507 via a rotating shaft; The second meshing portion 502 is slidably arranged on the third support frame 506, and the third support frame 506 is slidably matched with the limiting groove 105. A third meshing portion 508 is slidably arranged between the first meshing portion 501 and the second meshing portion 502, and a fourth meshing portion 509 is fixedly arranged on the side of the second meshing portion 502 away from the detection carrier 103, and the first transmission gear 507 is meshed between the third meshing portion 508 and the fourth meshing portion 509; in the initial state, the second meshing portion 502 is separated from the gear transmission part, and the first meshing portion 501 is separated from the traveling gear 402. When the first meshing portion 501 is moved to mesh with the traveling gear 402 through the forward movement of the telescopic cylinder 505, the third meshing portion 508 that moves synchronously with the first meshing portion 501 drives the first transmission gear 507 The first gear 502 is engaged with the second gear 501 and the second gear 502 is engaged with the first gear 501. When the first gear 501 is engaged with the travel gear 402, the horizontal movable seat 406 is driven to move horizontally by the rotation of the detection control shaft 106. The horizontal movable seat 406 drives the first support frame 503 to move synchronously. The third support frame 506 that moves synchronously with the first support frame 503 drives the second gear 502 to move synchronously. During the movement of the second gear 502, the third gear 508 is driven to slide along the first gear 501. In this way, the synchronous horizontal movement of the entire airtight detection mechanism 4 and the second gear 502 can be achieved.

[0045] In this embodiment of the present invention, the dialyzer mounting mechanism 2 includes a support ring 201 rotatably arranged inside the circular detection cavity 102, the top of the support ring 201 is connected to a dialyzer mounting seat 202 coaxially therewith through a support plate, a plurality of dialyzer mounting grooves 203 are arranged in a circumferential array on the top of the dialyzer mounting seat 202, a positioning hole 204 is provided at the bottom of the dialyzer mounting groove 203, the lower blood chamber port 301 on the dialyzer body 3 is inserted into the positioning hole 204 in the dialyzer mounting groove 203, and a positioning port 205 communicating with the corresponding dialyzer mounting groove 203 is provided on the side surface of the dialyzer mounting seat 202, the positioning and fixing of the entire dialyzer body 3 in the dialyzer mounting groove 203 is achieved through the positioning port 205, and the bottom of the support ring 201 is connected to an inner gear ring 206 coaxially therewith through a support plate; The gear transmission part includes a linkage shaft rotatably arranged on the top of the second support frame 504, and the second transmission gear 510 and the third transmission gear 511 are fixedly installed on the side surfaces of the linkage shaft. The second transmission gear 510 is arranged on the inner side of the inner gear ring 206 and the two are meshed with each other, and the third transmission gear 511 is adapted to the position of the second meshing portion 502; after controlling the entire airtight detection mechanism 4 (towards the right side) to move smoothly horizontally to the right to the detection position on the right and completing the detection, the first meshing portion 501 is moved to mesh with the traveling gear 402 by the forward movement of the telescopic cylinder 505, and then the entire airtight detection mechanism 4 (towards the right side) is controlled to move smoothly horizontally to the left to the initial position, the direction of the airtight detection mechanism 4 is changed to toward the left (counterclockwise rotation), and then the first meshing portion 501 is controlled to move in the opposite direction to disengage from the traveling gear 402, and the entire airtight detection mechanism 4 (towards the left side) is continued to be controlled to move smoothly horizontally to the left to the detection position on the left and complete the detection, and then the telescopic cylinder 505 is continued to be used. The forward extension movement causes the first meshing portion 501 to move to mesh with the traveling gear 402, and then controls the entire airtightness detection mechanism 4 (towards the left side) to move smoothly and horizontally to the right side to the initial position, and the direction of the airtightness detection mechanism 4 is changed to the right side (clockwise rotation), and then controls the first meshing portion 501 to move in the opposite direction to disengage from the traveling gear 402. After the first meshing portion 501 returns to the initial position, it continues to retract through the telescopic cylinder 505 to cause the first meshing portion 501 to move in the direction away from the traveling gear 402, and the third meshing portion 508 that moves synchronously with the first meshing portion 501 drives the first transmission gear 507 to rotate. Under the action of the first transmission gear 507, the fourth meshing portion 509 is driven to move in the opposite direction of the first meshing portion 501 (that is, to move closer to the third transmission gear 511), thereby causing the second meshing portion 502 to move along the third support frame 506 toward the third transmission gear 511 until the second meshing portion 502 is meshed with the third transmission gear 511; Then, in the process of controlling the entire airtightness detection mechanism 4 (towards the right side) to move smoothly and horizontally to the right side to the detection position, the second meshing portion 502 which moves synchronously with the airtightness detection mechanism 4 drives the third transmission gear 511 to rotate, and the second transmission gear 510 which rotates synchronously with the third transmission gear 511 drives the inner gear ring 206 to rotate (counterclockwise), thereby driving the entire dialyzer installation mechanism 2 to rotate counterclockwise (as shown in FIG. Figure 2 As shown in FIG5 ), when the airtightness detection mechanism 4 (towards the right side) moves smoothly and horizontally to the right side to the detection position on the right side, the dialyzer body 3 on the right side that has completed the detection rotates counterclockwise to leave the detection position, and the dialyzer body 3 at the next position rotates counterclockwise to the detection position on the right side. Similarly, for the left side, the dialyzer body 3 on the left side that has completed the detection rotates counterclockwise to leave the detection position, and the dialyzer body 3 at the next position rotates counterclockwise to the detection position on the left side. Thus, the dialyzer body 3 at the detection positions on the left and right sides is switched at the same time. After the detection of the dialyzer body 3 at the detection position on the right side is completed again, the first meshing portion 501 moves to mesh with the traveling gear 402 again through the forward movement of the telescopic cylinder 505 (at this time, the second meshing portion 502 is disengaged from the third transmission gear 511). Subsequently, the airtightness detection of the dialyzer body 3 at the detection position on the left side is realized again through the same control method as mentioned above. In this way, batch automatic detection of the dialyzer body 3 can be realized, thereby greatly improving the efficiency of airtightness detection.

[0046] In this embodiment of the present invention, the present invention further comprises a dialyzer positioning mechanism 6; wherein, the dialyzer positioning mechanism 6 comprises a fixing ring 7 fixedly mounted on the bottom of the dialyzer mounting seat 202, and a dialyzer positioning assembly 8 corresponding to the dialyzer body 3 is fixedly mounted on the side surface of the fixing ring 7; the dialyzer positioning assembly 8 comprises a fourth support frame 801 fixedly mounted on the side surface of the fixing ring 7, and two internally threaded tubes 802 arranged up and down are rotatably provided on the fourth support frame 801, and a transmission wheel 803 is fixedly mounted on the end of the internally threaded tube 802, and the two transmission wheels 803 are connected by a transmission belt 804; a horizontal screw 805 is fitted on the internal thread of the internally threaded tube 802, and a horizontal blocking portion 806 is fixedly provided on the end of the horizontal screw 805, and the two horizontal blocking portions 806 are fixedly connected by a vertical connecting plate 807; The fourth support frame 801 is provided with a vertical movable frame 808 sliding on the surface. The vertical movable frame 808 is connected to the fixed plate 809 on the fourth support frame 801 by a second elastic member 810. A second magnetic plate 811 is fixedly installed on the top of the vertical movable frame 808. The permanent magnet installed on the top of the second magnetic plate 811 and the electromagnet repel each other magnetically. The horizontal blocking portion 806 is used to dock with the dialysis port 303 on the corresponding dialyzer body 3. The bottom of the vertical movable frame 808 is fixedly provided with a The vertical tooth plate 812 is meshed with the fourth transmission gear 813 fixed on the corresponding internally threaded tube 802; by pressing the vertical movable frame 808 downward, the second elastic member 810 is stretched, and the vertical tooth plate 812 that moves downward synchronously with the vertical movable frame 808 drives the fourth transmission gear 813 to rotate. When the fourth transmission gear 813 rotates, it drives the corresponding internally threaded tube 802 to rotate, and the two internally threaded tubes 802 are driven to rotate synchronously through the action of the transmission belt 804 , under the threaded cooperation between the internal threaded tube 802 and the horizontal screw 805, the upper and lower horizontal blocking parts 806 are driven to move synchronously close to the fourth support frame 801. After the lower blood chamber port 301 on the dialyzer body 3 is inserted into the positioning hole 204 in the dialyzer mounting groove 203 and the dialyzer port 303 is aligned with the horizontal blocking part 806, the external force applied to the vertical movable frame 808 is released and with the help of the strong elastic force of the second elastic member 810, the vertical gear plate 812 moves upward and resets and drives the fourth transmission gear 813 to rotate in the opposite direction, thereby driving the upper and lower horizontal blocking parts 806 to move synchronously away from the fourth support frame 801 and be sealed and plugged into the dialyzer port 303. In this way, the connection between one dialyzer body 3 and the corresponding dialyzer positioning assembly 8 is completed. The connection between all dialyzer bodies 3 and the corresponding dialyzer positioning assembly 8 is realized in the same way. After the connection between all dialyzer bodies 3 and the corresponding dialyzer positioning assembly 8 is completed, the airtightness test can be started.

[0047] After completing the airtightness test of all the dialyzer bodies 3 on the dialyzer mounting base 202, the airtightness detection mechanism 4 returns to the initial position (i.e., the airtightness detection cylinder 401 is at the axis position of the dialyzer mounting mechanism 2). Figure 1 and Figure 2As shown, at this time, the electromagnet at the bottom of the first magnetic plate 415 is just at the top of the second magnetic plate 811 corresponding to the dialyzer body 3 on the right side, and then the electromagnet is controlled to be energized to generate a strong downward magnetic thrust on the second magnetic plate 811 below it, and the downward-moving vertical gear plate 812 drives the fourth transmission gear 813 to rotate, so that the upper and lower horizontal blocking parts 806 move synchronously close to the fourth support frame 801, thereby realizing the horizontal blocking part 806 to be separated from the dialyzer port 303 on the right detection position. At this time, the dialyzer body 3 on the right detection position can be directly taken out from the corresponding dialyzer mounting slot 203. After completing a dialyzer body 3 on the right detection position After disassembly, the second meshing portion 502 is controlled by the telescopic cylinder 505 to move to mesh with the third transmission gear 511, and then the entire airtightness detection mechanism 4 (towards the right) is controlled to move smoothly and horizontally to the right to the detection position on the right. During this process, the second meshing portion 502, which moves synchronously with the airtightness detection mechanism 4, drives the third transmission gear 511 to mesh and rotate counterclockwise by a certain angle, thereby causing the entire dialyzer installation mechanism 2 to rotate counterclockwise by a certain angle. At this time, the dialyzer body 3 in the next position moves to the detection position on the right. Subsequently, the telescopic cylinder 505 controls the second meshing portion 502 to move in the opposite direction to disengage from the third transmission gear 511 and return to the initial position. Then, the entire airtightness detection mechanism 4 (towards the right side) is controlled to move horizontally to the left side smoothly to the initial position (i.e., the position shown in Figure 2). At this time, the electromagnet is again aligned with the detection position on the right side. Under the action of the magnetic repulsive force, the dialyzer port 303 of the dialyzer body 3 at this position is again separated from the corresponding horizontal blocking portion 806. In the same way, the dialyzer body 3 at the detection position is taken out from the corresponding dialyzer mounting slot 203. The second meshing portion 502 is again controlled by the telescopic cylinder 505 to move to mesh with the third transmission gear 511. Then, the entire airtightness detection mechanism 4 (towards the right side) is again controlled to move horizontally to the right side smoothly. At the detection position, the entire dialyzer mounting mechanism 2 is rotated counterclockwise by the same angle again, and the dialyzer body 3 at the next position moves to the detection position on the right. The second engaging portion 502 is again controlled by the telescopic cylinder 505 to move in the opposite direction to disengage the third transmission gear 511 and return to the initial position. The dialyzer body 3 at this position is taken out from the corresponding dialyzer mounting slot 203 in the same way. In this cyclic control method, all dialyzer bodies 3 on the dialyzer mounting mechanism 2 that have completed detection are disassembled and removed. After the disassembly of all dialyzer bodies 3 is completed, the detection operation of the next batch of dialyzer bodies 3 can be carried out.

[0048] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An airtightness detection device, characterized in that: include: A detection carrying mechanism (1), the detection carrying mechanism (1) comprising a detection carrying platform (101), a circular detection cavity (102) being provided at the center of the detection carrying platform (101), a dialyzer mounting mechanism (2) being rotatably provided coaxially therewith inside the circular detection cavity (102), and a plurality of dialyzer bodies (3) being provided in a circumferential array at the top of the dialyzer mounting mechanism (2); An airtightness detection mechanism (4), the airtightness detection mechanism (4) being arranged inside the circular detection cavity (102) and being in horizontal sliding cooperation with the detection bearing mechanism (1), the airtightness detection mechanism (4) comprising a vertically arranged airtightness detection cylinder (401), a traveling gear (402) being arranged below the airtightness detection cylinder (401) and rotating synchronously therewith, and the rotation of the airtightness detection cylinder (401) being achieved by controlling the rotation of the traveling gear (402); and a transposition control mechanism (5), wherein the transposition control mechanism (5) is arranged below the detection carrier (101) and is horizontally slidably matched with the detection carrier mechanism (1), and the transposition control mechanism (5) is fixedly mounted on the bottom of the airtight detection mechanism (4), and the transposition control mechanism (5) comprises a first meshing portion (501) and a second meshing portion (502) arranged parallel to each other, a gear transmission portion meshing with the dialyzer mounting mechanism (2) is rotatably arranged between the first meshing portion (501) and the second meshing portion (502), the first meshing portion (501) is used to control the rotation of the running gear (402), and the second meshing portion (502) is used to control the rotation of the gear transmission portion, and the rotation of the dialyzer mounting mechanism (2) is achieved by controlling the rotation of the gear transmission portion; Two sealed flow guides (403) are symmetrically arranged on one side of the airtight detection cylinder (401). The airtight detection cylinder (401), the sealed flow guide (403) and the dialyzer body (3) connected between the two sealed flow guides (403) form a detection flow channel, and the detection air flow is transported to the airtight detection cylinder (401) and the corresponding dialyzer body (3) through the detection flow channel. A light source sensor (404) is installed at the bottom of the airtight detection cylinder (401). An elastically resettable distance measuring piston (405) is slidably arranged inside the airtight detection cylinder (401). By detecting the change in the distance between the distance measuring piston (405) and the light source sensor (404), it is determined whether the corresponding dialyzer body (3) has a sealing defect.

2. The airtightness detection device according to claim 1, characterized in that: The detection bearing mechanism (1) further comprises a detection bearing frame (103), wherein the detection bearing frame (103) is fixedly mounted on the bottom of the detection bearing platform (101), a limited position slideway (104) is provided at the bottom of the detection bearing frame (103), a limited position groove (105) is provided on one side of the detection bearing frame (103), two lower extension mounting plates are symmetrically fixedly provided at the bottom of the detection bearing frame (103), a detection control shaft (106) is rotatably provided between the lower extension mounting plates, and the detection control shaft (106) is connected to the output end of a detection control motor (107) mounted on the surface of one of the lower extension mounting plates.

3. The airtightness detection device according to claim 2, characterized in that: The airtightness detection mechanism (4) further comprises a horizontal movable seat (406) that is slidably engaged with the interior of the limiting slideway (104); the horizontal movable seat (406) is sleeved on the detection control shaft (106) and the two are threadedly engaged; a vertical support shaft (407) is rotatably provided on the top of the horizontal movable seat (406); the airtightness detection cylinder (401) is fixedly sleeved on the vertical support shaft (407); a first elastic member (408) connected to the distance measuring piston (405) is provided at the bottom of the airtightness detection cylinder (401); and an air inlet joint (409) is installed on the side surface of the airtightness detection cylinder (401) close to the top.

4. The airtightness detection device according to claim 3, characterized in that: The traveling gear (402) is fixedly mounted on a side surface of the vertical support shaft (407) close to the horizontal movable seat (406); a first horizontal seat (410) fixedly connected to the vertical support shaft (407) is provided above the traveling gear (402); a second horizontal seat (411) is fixedly provided on the top of the vertical support shaft (407); a sealed guide portion (403) is slidably provided on each of the first horizontal seat (410) and the second horizontal seat (411); a lifting plate (412) is fixedly provided on a side surface of the sealed guide portion (403); A bidirectional screw (413) is rotatably provided between the first horizontal seat (410) and the second horizontal seat (411); the lifting plate (412) is sleeved on the bidirectional screw (413) and the two are threadedly matched; a docking control motor (414) is installed on the U-shaped motor seat at the top of the second horizontal seat (411); the output end of the docking control motor (414) is connected to the bidirectional screw (413); a first magnetic plate (415) is fixedly installed on the side of the second horizontal seat (411) away from the vertical support shaft (407); an electromagnet is installed at the bottom of the first magnetic plate (415).

5. The airtightness detection device according to claim 4, characterized in that: A detection air supply device (416) is installed on the top of the first horizontal seat (410), and the air outlet end of the detection air supply device (416) is connected to the air inlet of the closed guide part (403) on the first horizontal seat (410) through a guide hose, and the air inlet end of the air inlet connector (409) is connected to the air outlet of the closed guide part (403) on the second horizontal seat (411) through a guide hose. The closed guide part (403) on the first horizontal seat (410) is used to connect with the lower blood chamber port (301) on the dialyzer body (3), and the closed guide part (403) on the second horizontal seat (411) is used to connect with the upper blood chamber port (302) on the dialyzer body (3).

6. The airtightness detection device according to claim 5, characterized in that: The shift control mechanism (5) further comprises a first support frame (503) fixedly mounted on the horizontal movable seat (406); a second support frame (504) is fixedly mounted on a side of the detection carrier frame (103) close to the limiting groove (105); an output end of a telescopic cylinder (505) mounted on the second support frame (504) is connected to the first meshing portion (501); a third support frame (506) is fixedly mounted on the top of the first support frame (503); and one side of the third support frame (506) is connected to a first transmission gear (507) via a rotating shaft; The second meshing portion (502) is slidably arranged on the third support frame (506), and the third support frame (506) is slidably matched with the limiting groove (105). A third meshing portion (508) is slidably arranged between the first meshing portion (501) and the second meshing portion (502), and a fourth meshing portion (509) is fixedly arranged on the side of the second meshing portion (502) away from the detection carrier frame (103). The first transmission gear (507) is meshed and arranged between the third meshing portion (508) and the fourth meshing portion (509).

7. The airtightness detection device according to claim 6, characterized in that: The dialyzer mounting mechanism (2) comprises a support ring (201) rotatably arranged inside a circular detection cavity (102); the top of the support ring (201) is connected to a dialyzer mounting seat (202) coaxially therewith via a support plate; a plurality of dialyzer mounting grooves (203) are arranged in a circumferential array on the top of the dialyzer mounting seat (202); positioning holes (204) are provided at the bottom of the dialyzer mounting grooves (203); positioning openings (205) communicating with corresponding dialyzer mounting grooves (203) are provided on the peripheral side surface of the dialyzer mounting seat (202); and the bottom of the support ring (201) is connected to an inner gear ring (206) coaxially therewith via a support plate; The gear transmission portion includes a linkage shaft rotatably arranged on the top of the second support frame (504), and a second transmission gear (510) and a third transmission gear (511) are fixedly mounted on the circumferential side surfaces of the linkage shaft. The second transmission gear (510) is arranged on the inner side of the inner gear ring (206) and the two are meshed with each other. The third transmission gear (511) is adapted to the position of the second meshing portion (502).

8. The airtightness detection device according to claim 7, characterized in that: It also includes a dialyzer positioning mechanism (6); wherein the dialyzer positioning mechanism (6) includes a fixing ring (7) fixedly mounted on the bottom of the dialyzer mounting seat (202), and a dialyzer positioning component (8) corresponding to the dialyzer body (3) is fixedly mounted on the side surface of the fixing ring (7); The dialyzer positioning assembly (8) includes a fourth support frame (801) fixedly mounted on the side surface of the fixing ring (7); two internally threaded tubes (802) arranged in an upper and lower manner are rotatably mounted on the fourth support frame (801); a transmission wheel (803) is fixedly mounted on the end of the internally threaded tube (802); the two transmission wheels (803) are connected via a transmission belt (804); a horizontal screw rod (805) is fitted on the internal thread of the internally threaded tube (802); a horizontal blocking portion (806) is fixedly mounted on the end of the horizontal screw rod (805); the two horizontal blocking portions (806) are fixedly connected via a vertical connecting plate (807); A vertical movable frame (808) is slidingly provided on the surface of the fourth support frame (801), and the vertical movable frame (808) is connected to the fixed plate (809) on the fourth support frame (801) through a second elastic member (810). A second magnetic plate (811) is fixedly installed on the top of the vertical movable frame (808), and the permanent magnet installed on the top of the second magnetic plate (811) and the electromagnet magnetically repel each other. The horizontal sealing portion (806) is used to dock with the dialyzer port (303) on the corresponding dialyzer body (3), and a vertical tooth plate (812) is fixedly provided on the bottom of the vertical movable frame (808), and the vertical tooth plate (812) is engaged with the fourth transmission gear (813) fixed on the corresponding internal threaded tube (802).

9. A method for detecting a hemodialyzer based on the airtightness detection device according to claim 8, characterized in that: The steps include: S01, the controller starts the detection control motor (107) to drive the detection control shaft (106) to rotate in the forward direction, so that the airtight detection mechanism (4) moves smoothly and horizontally to the right along the detection carrier (103). When the detection control motor (107) stops running, the sealed guide portion (403) on the first horizontal seat (410) is just aligned with the lower blood chamber port (301) on the dialyzer body (3) at the corresponding position, and the sealed guide portion (403) on the second horizontal seat (411) is just aligned with the upper blood chamber port (302) on the dialyzer body (3) at the corresponding position. Then the controller starts the docking control motor (414) to control the bidirectional screw (413) to rotate in the forward direction, so that the upper and lower sealed guide portions (403) approach each other until they are tightly docked with the lower blood chamber port (301) and the upper blood chamber port (302). At this time, the construction of a closed detection flow channel is completed; S02, start the detection air supply device (416) to transport air to the inside of the dialyzer body (3) at the position, and the air entering the dialyzer body (3) enters the airtightness detection cylinder (401) through the hose. When the air is continuously transported to the inside of the airtightness detection cylinder (401), a downward thrust is generated on the distance measuring piston (405), causing the first elastic member (408) to be compressed and deformed. During this process, the distance value between the light source sensor (404) and the distance measuring piston (405) gradually decreases until the distance value between the light source sensor (404) and the distance measuring piston (405) reaches the set value. At this time, the detection air supply device (416) stops running and realizes the closure of the detection flow channel. After a period of time, if the controller receives a large change in the distance value, it means that the dialyzer body (3) has a sealing defect problem, otherwise it means that the dialyzer body (3) does not have a sealing defect problem; S03. After completing the airtightness test of the dialyzer body (3), the controller starts the docking control motor (414) again to control the bidirectional screw (413) to rotate in the opposite direction, so that the upper and lower sealed guide parts (403) move away from each other until the tight docking of the lower blood chamber port (301) and the upper blood chamber port (302) is released. At this time, the upper and lower sealed guide parts (403) return to the initial position, and the elastic restoring force of the first elastic member (408) causes the distance measuring piston (405) to move up and reset, and then the first meshing part (50 1) moving to achieve engagement with the traveling gear (402), and then controlling the detection control motor (107) to drive the detection control shaft (106) to rotate in the opposite direction, so that the entire airtightness detection mechanism (4) moves smoothly and horizontally to the left along the detection carrier (103), and when the detection control motor (107) stops running, the entire airtightness detection mechanism (4) just returns to the initial position, at which time the entire airtightness detection mechanism (4) just completes the (180)° rotation, and then controls the first meshing portion (501) to move in the opposite direction to disengage from the traveling gear (402); S04, continue to drive the detection control shaft (106) to rotate in the opposite direction through the detection control motor (107), so that the airtight detection mechanism (4) continues to move horizontally and smoothly to the left. When the detection control motor (107) stops running, the sealed guide part (403) on the first horizontal seat (410) is just aligned with the lower blood chamber port (301) on the dialyzer body (3) at the corresponding position, and the sealed guide part (403) on the second horizontal seat (411) is just aligned with the upper blood chamber port (302) on the dialyzer body (3) at the corresponding position. Then the controller starts the docking control motor (414) to control the bidirectional screw (413) to rotate forward, so that the upper and lower sealed guide parts (403) are close to each other until they are tightly docked with the lower blood chamber port (301) and the upper blood chamber port (302). At this time, the construction of a closed detection flow channel is completed, and then the same control method as above is used to complete the airtightness detection of a dialyzer body (3) on the left side; S05. After completing the airtightness test of the dialyzer body (3) on the left side, the first meshing portion (501) is controlled to move again to achieve meshing with the traveling gear (402), and then the detection control motor (107) drives the detection control shaft (106) to rotate in the forward direction, so that the airtightness detection mechanism (4) can be moved to the right while rotating clockwise until the airtightness detection mechanism (4) returns to the initial position. At this time, the airtightness detection mechanism (4) is facing the right again, and then the first meshing portion (501) is controlled to move in the reverse direction to disengage from the traveling gear (402); S06. Continue to retract the telescopic cylinder (505) so that the first meshing portion (501) moves in a direction away from the running gear (402), and the third meshing portion (508) that moves synchronously with the first meshing portion (501) drives the first transmission gear (507) to rotate. Under the action of the first transmission gear (507), the fourth meshing portion (509) is driven to move in the opposite direction of the first meshing portion (501), thereby causing the second meshing portion (502) to move along the third support frame (506) toward the third transmission gear (511), until the second meshing portion (502) is meshed with the third transmission gear (511); S07, then controlling the entire airtightness detection mechanism (4) to move smoothly horizontally to the right side to the detection position on the right side, the second meshing portion (502) that moves synchronously with the airtightness detection mechanism (4) drives the third transmission gear (511) to rotate, and the second transmission gear (510) that rotates synchronously with the third transmission gear (511) drives the inner gear ring (206) to rotate, thereby driving the entire dialyzer installation mechanism (2) to rotate counterclockwise. When the airtightness detection mechanism (4) moves smoothly horizontally to the right side to the detection position on the right side, the dialyzer body (3) that has completed the detection on the right side rotates counterclockwise to leave the detection position, and the dialyzer body (3) at the next position rotates counterclockwise to the detection position on the right side. Similarly, for the left side, the dialyzer body (3) that has completed the detection on the left side rotates counterclockwise to leave the detection position, and the dialyzer body (3) at the next position rotates counterclockwise to the detection position on the left side, thereby simultaneously realizing the switching of the dialyzer body (3) at the detection positions on the left and right sides; S08. After the test of the dialyzer body (3) at the right detection position is completed again, the first meshing portion (501) is moved by the forward movement of the telescopic cylinder (505) to again engage with the traveling gear (402). Subsequently, the airtightness test of the dialyzer body (3) at the left detection position is again carried out by the same control method as mentioned above. In this way, the airtightness test of all the dialyzer bodies (3) on the dialyzer mounting seat (202) is completed.

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