Cooling device for hemodialyzer production

Abstract

The utility model provides a cooling device for hemodialyzer production, which comprises a frame, the top of the frame is movably provided with a conveyor belt, the middle of the outer side of the frame is fixedly provided with a wrapping frame body, and the front side of the wrapping frame body is fixedly provided with an air refrigerator. During application of the device, an electric push rod is in transmission fit with a gear and a rack, an air refrigerator is used for supplying cold air, efficient cooling can be achieved, after the hemodialyzer enters a wrapping frame along with a conveying belt, the electric push rod pushes a connecting block to drive a sliding frame to slide along a guide rail, and a rack at the bottom of the sliding frame is meshed with a gear ring to drive a rotating connector to rotate; meanwhile, low-temperature airflow generated by the air refrigerating machine is jetted out from the cold air pipe nozzle through the fan and the conveying pipe and covers the surface of the dialyzer in all directions, cold air convection heat exchange is enhanced in a rotary jetting mode, cooling dead corners are eliminated, the cooling efficiency and temperature uniformity are remarkably improved, and the cooling waiting time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of medical device manufacturing auxiliary technology, and in particular to a cooling device for the production of hemodialysis machines. Background Technology

[0002] In the production process of hemodialyzers, the drying process is one of the key links to ensure product quality. After drying, the temperature of the hemodialyzer usually reaches about 55 degrees Celsius. However, when the high-temperature product is directly transported to the overall testing process, the changes in the physical or chemical properties of the product caused by the heat will seriously interfere with the accuracy of the test data, resulting in high test values ​​and extremely low pass rates. Studies have shown that only when the product temperature drops to about 26 degrees Celsius can the test data return to normal and the test results meet the qualified standards.

[0003] Currently, the common solution in the industry is to place the dried products in a perforated turnover frame and allow them to cool naturally in the environment. While this method can meet the temperature requirements for testing, it has significant drawbacks: a single cooling cycle can take up to 20 minutes. In large-scale production scenarios, the waiting time for a large number of products to cool significantly prolongs the production cycle, severely restricts overall production efficiency, and increases time costs and warehousing pressure. It is difficult to meet the needs of efficient production of modern medical products. It is clear that the existing technology has certain defects and shortcomings, and therefore, it is necessary to improve and design the existing technology. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a cooling device for hemodialysis machine production, which more precisely solves the problems described above.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a cooling device for the production of hemodialysis machines, including a frame, a conveyor belt movably mounted on the top of the frame, a covering frame fixedly mounted on the middle of the outer side of the frame, an air chiller fixedly mounted on the front of the covering frame, a fan fixedly mounted on the top of the air chiller, a cooling mechanism fixedly mounted on the top of the covering frame, the input end of the cooling mechanism being connected to the output end of the fan, the input end of the fan being connected to the output end of the air chiller, and a positioning mechanism fixedly mounted on the bottom of the covering frame, with the positioning ends of the positioning mechanism located on both sides of the top of the conveyor belt;

[0007] The cooling mechanism includes a guide rail, a conveying pipe, a cooling assembly, and a drive assembly. The conveying pipe is fixedly installed in the top middle of the encasing frame, and the input end of the conveying pipe is connected to the output end of the fan. The guide rail is fixedly installed on one side of the top of the encasing frame. The drive assembly is fixedly installed on one side of the encasing frame near the guide rail, and one side of the drive assembly slides inside the guide rail. The cooling assemblies are linearly arranged at equal intervals and rotatably connected to the top middle of the encasing frame.

[0008] Furthermore, the cooling assembly includes a rotary joint, which is rotatably connected to the top center of the enclosure frame in a linear arrangement with equal spacing. The top of the rotary joint is connected to the delivery pipe. A toothed ring is fixedly installed on the outer side of the rotary joint, and the toothed ring is connected to the drive assembly. Cold air pipes are fixedly installed on both sides of the rotary joint, and cold air nozzles are fixedly installed in a linear arrangement with equal spacing on the inner side of the cold air pipes.

[0009] Furthermore, the air nozzle is tilted downwards, and the air pipe is L-shaped.

[0010] Furthermore, the drive assembly includes a fixing plate, which is fixedly installed on the top side of the enclosure frame near the guide rail. An electric push rod is fixedly installed on one side of the fixing plate. A connecting block is fixedly installed through the fixing plate at the output end of the electric push rod. A slide is fixedly connected to the side of the connecting block near the guide rail. The side of the slide away from the connecting block is slidably connected to the inside of the guide rail. A rack is fixedly connected to the bottom of the slide, and the rack and a gear ring are meshed together.

[0011] Furthermore, the positioning mechanism includes a bottom rail, which is fixedly installed in the middle of the bottom of the covering frame. A drive motor is fixedly connected to one end of the bottom rail, and a lead screw is fixedly connected to the output end of the drive motor through the bottom rail. The lead screw is rotatably connected to the inside of the bottom rail, and the two ends of the lead screw have opposite thread directions. A slider is threaded to both ends of the lead screw, and a positioning frame is fixedly connected to the outside of the slider.

[0012] Furthermore, the positioning frame includes a base plate, which is fixedly installed on the bottom of the slider. A connecting plate is fixedly connected to the outer end of the base plate. Upright plates are fixedly installed at both ends of the top of the connecting plate. A connecting rod is fixedly installed on the upper inner side of the upright plate. The inner end of the connecting rod extends into the enclosure frame and is fixedly installed with a positioning plate.

[0013] Furthermore, the inner side of the positioning plate is rotatably connected with guide balls at equal intervals, and the cross-sectional shape of the internal cavity of the guide rail and the side shape of the slider are both set as convex.

[0014] The beneficial effects of this utility model are:

[0015] 1. During the application of this device, the electric push rod and gear rack transmission, combined with an air chiller, can achieve efficient cooling. When the hemodialyzer enters the enclosure frame with the conveyor belt, the electric push rod pushes the connecting block to drive the slide along the guide rail. The rack and toothed ring at the bottom of the slide mesh, driving the rotary joint to rotate, so that the cold air pipe rotates around the dialyzer. At the same time, the low-temperature airflow generated by the air chiller is sprayed out from the cold air pipe nozzle through the fan and delivery pipe, covering the dialyzer surface in all directions. The rotating spray method enhances the convection heat transfer of cold air, eliminates cooling dead zones, significantly improves cooling efficiency and temperature uniformity, and shortens the cooling waiting time.

[0016] 2. During the application of this device, the drive motor and lead screw transmission work together to ensure stable transport of the dialyzer. The drive motor drives the lead screw to rotate, and the reverse threads at both ends cause the slider to move laterally to the positioning frame. Before the dialyzer enters the cooling zone, the positioning plate gently clamps its outer shell with guide balls. During the transport process, the balls roll with the dialyzer to reduce friction and ensure that it is always in the center of the cooling zone. The positioning mechanism can automatically adjust the spacing according to the outer diameter of the dialyzer to adapt to multiple specifications of products. Moreover, the balls are made of medical-grade materials to avoid damage to the products and ensure the stability of the conveyor belt and the quality of the finished product. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0019] Figure 3 This is a schematic diagram of the side test structure of this utility model;

[0020] Figure 4 This is a bottom view of the cooling mechanism of this utility model.

[0021] In the diagram: 1. Frame; 2. Conveyor belt; 3. Covering frame; 4. Air refrigeration unit; 5. Fan; 6. Cooling mechanism; 61. Guide rail; 62. Conveying pipe; 63. Cooling assembly; 631. Rotary joint; 632. Gear ring; 633. Cooling pipe; 634. Cooling nozzle; 64. Drive assembly; 641. Fixing plate; 642. Electric push rod; 643. Connecting block; 644. Slide carriage; 645. Rack; 7. Positioning mechanism; 71. Bottom rail; 72. Drive motor; 73. Lead screw; 74. Slider; 75. Positioning frame; 751. Base plate; 752. Connecting plate; 753. Vertical plate; 754. Connecting rod; 755. Positioning plate; 756. Guide ball. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] A cooling device for hemodialysis machine production includes a frame 1, a conveyor belt 2 movably mounted on the top of the frame 1, a covering frame 3 fixedly mounted on the middle of the outer side of the frame 1, an air cooler 4 fixedly mounted on the front of the covering frame 3, a fan 5 fixedly mounted on the top of the air cooler 4, a cooling mechanism 6 fixedly mounted on the top inside the covering frame 3, the input end of the cooling mechanism 6 being connected to the output end of the fan 5, the input end of the fan 5 being connected to the output end of the air cooler 4, and a positioning mechanism 7 fixedly mounted on the bottom of the covering frame 3, the positioning ends of the positioning mechanism 7 being located on both sides of the top of the conveyor belt 2, and the conveyor belt 2 passing through the lower inside of the covering frame 3.

[0025] The cooling mechanism 6 includes a guide rail 61, a delivery pipe 62, a cooling assembly 63, and a drive assembly 64. The delivery pipe 62 is fixedly installed in the top center of the enclosure 3, and its input end is connected to the output end of the fan 5. The guide rail 61 is fixedly installed on one side of the top of the enclosure 3. The drive assembly 64 is fixedly installed on one side of the enclosure 3 near the guide rail 61, and one side of the drive assembly 64 slides inside the guide rail 61. The cooling assemblies 63 are linearly arranged at equal intervals and rotatably connected to the top center of the enclosure 3. During the application of this device, blood... During the cooling process before dialyzer production, processing, and testing, conveyor belt 2 transports the dialyzer into the enclosure frame 3. After the air chiller 4 is started, it generates a low-temperature airflow. Fan 5 pressurizes the cold air and delivers it to the delivery pipe 62 of the cooling mechanism 6. At the same time, drive group 64 slides in the guide rail 61, driving cooling group 63 to rotate in a linear arrangement, so that the cold air is evenly sprayed from the cooling group 63 onto the dialyzer. During this process, positioning mechanism 7 positions the dialyzer to ensure its stable position on conveyor belt 2, thereby achieving efficient cooling of the dialyzer.

[0026] Combination Figure 1 , Figure 3 and Figure 4As shown, the cooling assembly 63 includes a rotary joint 631. The rotary joints 631 are linearly arranged at equal intervals and rotatably connected to the top center of the encasing frame 3. The top of the rotary joint 631 is connected to the conveying pipe 62. A toothed ring 632 is fixedly installed on the outside of the rotary joint 631. The toothed ring 632 is connected to the drive assembly 64. Cooling pipes 633 are fixedly installed on both sides of the rotary joint 631. Cooling nozzles 634 are linearly arranged at equal intervals and fixedly installed on the inside of the cooling pipes 633. The cooling nozzles 634 are generally inclined downwards. The overall shape of the cooling pipes 633 is L-shaped. The drive assembly 64 includes a fixed plate 641, which is fixedly installed inside the cover frame 3 on the top side near the guide rail 61. An electric push rod 642 is fixedly installed on one side of the fixed plate 641. A connecting block 643 is fixedly installed through the fixed plate 641 at the output end of the electric push rod 642. A slide 644 is fixedly connected to the side of the connecting block 643 near the guide rail 61. The side of the slide 644 away from the connecting block 643 is slidably connected to the inside of the guide rail 61. A rack 645 is fixedly connected to the bottom of the slide 644. The rack 645 and the toothed ring 632 are meshed together.

[0027] In the above-described embodiments of the present application, during the use of this device, after the hemodialyzer is conveyed by the conveyor belt 2 into the enclosing frame 3, the low-temperature airflow produced by the air chiller 4 is pressurized by the fan 5 and conveyed to the rotary joint 631 through the conveying pipe 62. At this time, the electric push rod 642 is activated, and its output end pushes the connecting block 643, causing the slide 644 to slide along the guide rail 61. The rack 645 at the bottom of the slide 644 moves accordingly. Since the rack 645 meshes with the toothed ring 632 on the outside of the rotary joint 631, the movement of the rack 645 will drive the toothed ring 632 to rotate, thereby driving the rotary joint 631 to rotate. The L-shaped cold air pipe 633, which is fixedly connected to both sides of the rotary joint 631, will also rotate around the dialyzer. The cold air nozzle 634, which is inclined downward on the inner side of the cold air pipe 633, will spray the airflow onto the dialyzer surface at multiple angles and in all directions. This rotating spraying method allows the cold air to fully contact the dialyzer, effectively improving the cooling efficiency and ensuring uniform cooling of all parts of the dialyzer.

[0028] Example 2

[0029] Combination Figures 1-3As shown, the positioning mechanism 7 includes a bottom rail 71, which is fixedly installed in the middle of the bottom of the covering frame 3. A drive motor 72 is fixedly connected to one end of the bottom rail 71. A lead screw 73 is fixedly connected to the output end of the drive motor 72 through the bottom rail 71. The lead screw 73 is rotatably connected to the inside of the bottom rail 71. The two ends of the lead screw 73 have opposite threads. A slider 74 is threaded to both ends of the lead screw 73. A positioning frame 75 is fixedly connected to the outside of the slider 74. The positioning frame 75 includes a base plate 751. 1. Fixedly installed at the bottom of slider 74, the outer end of the base plate 751 is fixedly connected to the connecting plate 752, the top two ends of the connecting plate 752 are fixedly installed with the upright plate 753, the upper inner side of the upright plate 753 is fixedly installed with the connecting rod 754, the inner end of the connecting rod 754 extends into the covering frame 3 and is fixedly installed with the positioning plate 755, the inner side of the positioning plate 755 is rotatably connected with guide balls 756 at equal intervals, the internal cavity cross-sectional shape of the bottom rail 71 and the side shape of the slider 74 are both set as convex.

[0030] In the above-described embodiments of this application, during the application of this device, as the hemodialyzer enters the covering frame 3 along the conveyor belt 2, the positioning mechanism 7 starts working, the drive motor 72 starts, and drives the lead screw 73 to rotate inside the bottom rail 71. Since the threads at both ends of the lead screw 73 rotate in opposite directions, the sliders 74 connected to the threads at both ends move synchronously towards or away from each other within the bottom rail 71. The movement of the sliders 74 drives the positioning frame 75 connected to the outside to move. The base plate 751, connecting plate 752, upright plate 753, and connecting rod 754 of the positioning frame 75 cooperate with each other, so that the positioning plate 755 can move according to the position of the hemodialyzer. The position of the dialyzer is adjusted. Before the dialyzer enters the cooling zone, the positioning plate 755 moves towards the center under the drive of the lead screw 73. The guide ball 756 on the inner side of the positioning plate 755 gently contacts the dialyzer shell to form a stable clamp. The convex bottom rail 71 cavity cooperates with the slider 74 to ensure that the slider 74 moves stably without deviation or shaking. During the continuous transport of the dialyzer by the conveyor belt 2, the guide ball 756 can roll with the dialyzer to effectively reduce friction and ensure that the dialyzer is always in the center of the cooling zone, providing a stable positioning guarantee for the efficient cooling of the dialyzer.

[0031] The working principle and advantages of this utility model are as follows: This device achieves efficient cooling by using an electric push rod 642 to drive a rack 645 and a gear transmission. When the hemodialyzer enters the enclosure frame 3, the electric push rod 642 pushes the connecting block 643, causing the slide 644 to slide along the guide rail 61. The rack 645 at the bottom of the slide 644 meshes with the gear ring 632. By pushing the slide 644 to slide, the rotary joint 631 can be driven to rotate, causing the cooling air pipe 633 to circulate around the dialyzer on the conveyor belt 2. While rotating, the air chiller 4 produces a low-temperature airflow, which is pressurized by the fan 5 and transmitted through the delivery pipe 62. It is then sprayed out from the cold air nozzle 634 tilted downward inside the cold air pipe 633, covering the dialyzer surface in all directions. This rotating spraying method enhances the convective heat transfer between the cold air and the dialyzer surface, eliminates cooling dead zones, and can significantly shorten the cooling time from the original 20 minutes to 1-8 minutes. Moreover, the overall temperature deviation of the dialyzer can be controlled within ±1℃, significantly improving cooling efficiency and temperature uniformity.

[0032] This device is equipped with a positioning mechanism 7, which, during application, drives the positioning frame 75 via a drive motor 72 and a lead screw 73, ensuring stable dialyzer transport. Specifically, when the drive motor 72 is running, it rotates the lead screw 73. Because the threads at both ends of the lead screw 73 rotate in opposite directions, the sliders 74 on both sides move synchronously towards or away from each other, thereby causing the positioning frame 75 to shift laterally. Before the dialyzer enters the cooling zone, the positioning plate 755 moves towards the center under the drive of the lead screw 73, and its inner guide balls 756 gently contact the outside of the dialyzer. The shell forms a suitable clamping gap. During the conveyor belt 2 transport process, the guide balls 756 roll with the dialyzer, reducing friction and ensuring that the dialyzer is always in the center of the cooling area. The positioning mechanism 7 can automatically adjust the spacing according to the outer diameter of the dialyzer, with an adjustment range of 50-200mm, which can adapt to various product specifications. The guide balls 756 are covered with medical-grade silicone, with a low rolling friction coefficient, avoiding damage to the dialyzer and reducing the finished product defect rate to below 0.1%, effectively ensuring stable conveying of the conveyor belt 2 and product quality.

[0033] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A cooling device for the production of hemodialysis machines, characterized in that, The system includes a frame (1), a conveyor belt (2) is movably installed on the top of the frame (1), a covering frame (3) is fixedly installed on the middle of the outer side of the frame (1), an air cooler (4) is fixedly installed on the front of the covering frame (3), a fan (5) is fixedly installed on the top of the air cooler (4), a cooling mechanism (6) is fixedly installed on the top inside the covering frame (3), the input end of the cooling mechanism (6) is connected to the output end of the fan (5), the input end of the fan (5) is connected to the output end of the air cooler (4), and a positioning mechanism (7) is fixedly installed on the bottom of the covering frame (3), with the positioning ends of the positioning mechanism (7) located on both sides of the top of the conveyor belt (2). The cooling mechanism (6) includes a guide rail (61), a conveying pipe (62), a cooling group (63), and a drive group (64). The conveying pipe (62) is fixedly installed in the top middle of the covering frame (3). The input end of the conveying pipe (62) is connected to the output end of the fan (5). The guide rail (61) is fixedly installed in the top side of the covering frame (3). The drive group (64) is fixedly installed in the covering frame (3) on the side close to the guide rail (61). One side of the drive group (64) slides inside the guide rail (61). The cooling group (63) is linearly arranged at equal intervals and rotated in the top middle of the covering frame (3).

2. The cooling device for hemodialysis machine production according to claim 1, characterized in that, The cooling assembly (63) includes a rotary joint (631), which is rotatably connected to the top center of the cover frame (3) in a linear arrangement with equal spacing. The top of the rotary joint (631) is connected to the delivery pipe (62). A toothed ring (632) is fixedly installed on the outside of the rotary joint (631). The toothed ring (632) is connected to the drive assembly (64) for transmission. Cold air pipes (633) are fixedly installed on both sides of the rotary joint (631). Cold air nozzles (634) are fixedly installed on the inside of the cold air pipes (633) in a linear arrangement with equal spacing.

3. A cooling device for hemodialysis machine production according to claim 2, characterized in that, The air nozzle (634) is inclined downwards, and the air pipe (633) is L-shaped.

4. A cooling device for hemodialysis machine production according to claim 2, characterized in that, The drive assembly (64) includes a fixing plate (641), which is fixedly installed on the top side of the cover frame (3) near the guide rail (61). An electric push rod (642) is fixedly installed on one side of the fixing plate (641). A connecting block (643) is fixedly installed through the fixing plate (641) at the output end of the electric push rod (642). A slide (644) is fixedly connected to the side of the connecting block (643) near the guide rail (61). The slide (644) is slidably connected to the inside of the guide rail (61) on the side away from the connecting block (643). A rack (645) is fixedly connected to the bottom of the slide (644). The rack (645) and the toothed ring (632) are meshed together.

5. A cooling device for hemodialysis machine production according to claim 1, characterized in that, The positioning mechanism (7) includes a bottom rail (71), which is fixedly installed in the middle of the bottom of the covering frame (3). One end of the bottom rail (71) is fixedly connected to a drive motor (72). The output end of the drive motor (72) passes through the bottom rail (71) and is fixedly connected to a lead screw (73). The lead screw (73) is rotatably connected to the inside of the bottom rail (71). The two ends of the lead screw (73) have opposite threads. Both ends of the lead screw (73) are threadedly connected to sliders (74). The outside of the sliders (74) is fixedly connected to a positioning frame (75).

6. A cooling device for hemodialysis machine production according to claim 5, characterized in that, The positioning frame (75) includes a base plate (751), which is fixedly installed on the bottom of the slider (74). A connecting plate (752) is fixedly connected to the outer end of the base plate (751). A vertical plate (753) is fixedly installed at both ends of the top of the connecting plate (752). A connecting rod (754) is fixedly installed on the upper inner side of the vertical plate (753). The inner end of the connecting rod (754) extends into the covering frame (3) and a positioning plate (755) is fixedly installed therein.

7. A cooling device for hemodialysis machine production according to claim 6, characterized in that, The inner side of the positioning plate (755) is rotatably connected with guide balls (756) at equal intervals. The cross-sectional shape of the internal cavity of the guide rail (61) and the side shape of the slider (74) are both set as convex.

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