Novel peritoneal dialysis skeleton assembly airtightness testing tool

Abstract

The utility model relates to medical instrument production detection technical field especially, a kind of skeleton assembly air tightness test tool for new peritoneal dialysis, including bottom plate, support leg being located at the bottom surface of bottom plate, detection pool being located at the upper surface of bottom plate and gas tank being set at the one side of detection pool, gas tank has the air outlet pipe for the pressurized gas supply of to-be-tested product;The top of detection pool is open to form water inlet, and the bottom of detection pool is equipped with the water outlet pipe that passes through bottom plate, and water outlet valve is arranged on water outlet pipe;The inside of detection pool is horizontally fixed and is equipped with barrier net, and positioning assembly that cooperates with to-be-tested product is arranged on barrier net;The utility model is through the pressure plate design of the combination of outer frame and filter plate, the effective compression of to-be-tested product is realized, the air bubble that the fine leakage generates can be unobstructed through filter plate and float to observation area at the same time, avoid the " false seal " phenomenon caused by transparent cover plate overall contact in traditional method, effectively reduce the rate of missed detection.

Description

Technical Field

[0001] This utility model relates to the field of medical device production and testing technology, and in particular to a novel tooling for testing the airtightness of a peritoneal dialysis skeleton assembly. Background Technology

[0002] Peritoneal dialysis scaffold components are typically made of flexible polyvinyl chloride (PVC) and mainly consist of a scaffold, an upper membrane, and a lower membrane. The upper and lower membranes cover the upper and lower sides of the scaffold, respectively, forming a sealed structure and creating a cavity with an inlet and outlet. The airtightness of this cavity is crucial to ensuring that the product does not leak during use; therefore, it must be rigorously tested during the manufacturing process.

[0003] Currently, workshops generally lack dedicated airtightness testing equipment. Quality inspectors usually use the following method to conduct inspections: first, the component to be inspected is inflated and pressurized, then it is immersed in a water tank, and then a transparent cover is used to continuously press the surface of the product. The airtightness is judged by observing whether any bubbles escape.

[0004] However, this method is not only cumbersome and inefficient, but also, because the cover plate actually participates in the sealing effect during the pressing process, some minor leaks may not produce visible bubbles, thus affecting the accuracy of the test results and posing a risk of missed detection. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a new type of peritoneal dialysis skeleton component airtightness testing tool that is easy to operate and accurate in testing, in order to overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A novel tooling for testing the airtightness of peritoneal dialysis skeleton components, characterized by: It includes a base plate, support legs on the lower surface of the base plate, a test pool on the upper surface of the base plate, and an air box on one side of the test pool. The air box has an outlet pipe for pressurizing and supplying air to the product to be tested. The top of the testing pool is open to form a water inlet, and the bottom of the testing pool is provided with a water outlet pipe that penetrates the bottom plate, and a water outlet valve is installed on the water outlet pipe. The inside of the testing pool is fixedly equipped with a horizontal barrier net, and the barrier net is equipped with a positioning component that cooperates with the product to be tested; The positioning component includes a pressure plate fixedly connected to one side of the upper surface of the netting. One end of the pressure plate is connected to a pressure plate via a hinge. The pressure plate can rotate along the hinge and press against the pressure plate. A locking component is provided on the pressure plate to prevent the pressure plate from coming off. The upper surface of the pressure plate is provided with an identification area for indicating the placement position of the product to be tested; the pressure plate includes an outer frame and a filter plate disposed in the middle of the outer frame. When the pressure plate is rotated and pressed onto the pressure plate, the top view projection of the filter plate covers the identification area.

[0007] The technical problem to be solved by this utility model can be further achieved through the following steps: the locking component includes at least one vertical screw fixedly disposed on the upper surface of the pressure plate, and each vertical screw is fitted with a corresponding clamping nut; the pressure plate is provided with a relief groove corresponding to the position of the vertical screw, and the groove width of the relief groove is smaller than the outer diameter of the clamping nut.

[0008] The technical problem to be solved by this utility model can be further achieved through the following steps: the vertical screws are symmetrically arranged relative to the longitudinal central axis of the marking area, and there are two of them.

[0009] The technical problem to be solved by this utility model can be further achieved through the following steps: the end of the air box is provided with a control panel, which has a display screen for displaying the air pressure and a control knob for adjusting the air supply.

[0010] The technical problem to be solved by this utility model can be further achieved through the following steps: the inside of the detection pool is vertically provided with a partition, which divides the detection pool into a detection area and a draining area; the water outlet pipe includes a main pipe located at the bottom of the detection area and a secondary pipe located at the bottom of the draining area; the positioning component is located in the detection area of ​​the detection pool; and the barrier net is set in the detection area and the draining area.

[0011] The technical problem to be solved by this utility model can be further achieved through the following steps: the top of the partition is higher than the installation plane of the barrier net.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by combining the outer frame and the filter plate with the pressure plate design, the product to be tested is effectively compressed, while ensuring that the bubbles generated by the slight leakage can pass through the filter plate without obstruction and float to the observation area, avoiding the "false seal" phenomenon caused by the full contact of the transparent cover plate in the traditional method, and effectively reducing the missed detection rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the present invention from another angle; Figure 3 This is a front view schematic diagram of the present invention; Figure 4 A schematic diagram of the positioning component's operation; In the diagram: 1. Base plate; 2. Support leg; 3. Testing pool; 4. Air box; 5. Air outlet pipe; 6. Water outlet pipe; 7. Netting; 8. Pressure plate; 9. Hinge; 10. Pressure plate; 11. Marking area; 12. Filter plate; 13. Vertical screw; 14. Clamping nut; 15. Clearance groove; 16. Control panel; 17. Display screen; 18. Control knob; 19. Partition; 31. Testing area; 32. Draining area; 61. Main pipe; 62. Secondary pipe; 20. Product to be tested. Detailed Implementation

[0014] The specific technical solutions of this utility model are further described below to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0016] Please refer to Figure 1-4 A novel peritoneal dialysis skeleton assembly airtightness testing fixture includes a base plate 1, support legs 2 on the lower surface of the base plate 1, a test cell 3 on the upper surface of the base plate 1, and an air box 4 on one side of the test cell 3. The air box 4 has an outlet pipe 5 for pressurizing and supplying air to the product to be tested. The test cell 3 is an open container made of stainless steel. The air box 4 integrates an air pump and a pressure stabilizing element. The end of its outlet pipe 5 can be equipped with a quick-connect plug for quick connection to the valve of the product to be tested.

[0017] The top of the testing pool 3 is open to form a water inlet, and the bottom of the testing pool 3 is provided with a water outlet pipe 6 that penetrates the bottom plate 1. A water outlet valve is installed on the water outlet pipe 6. The water outlet pipe 6 and the water outlet valve together constitute a drainage system, which can quickly drain the water in the testing pool 3 after the test is completed. The water outlet valve is preferably a ball valve or a butterfly valve to achieve rapid opening and closing.

[0018] The detection pool 3 is horizontally fixed with a barrier net 7 inside, and the barrier net 7 is equipped with a positioning component that cooperates with the product to be tested. The barrier net 7 is woven from stainless steel wire, and its mesh size can effectively support the positioning component and the product to be tested without hindering the rise of air bubbles. The positioning component is used to fix the product to be tested and ensure that its sealed area is fully exposed during the testing process.

[0019] The positioning component includes a pressure plate 8 fixedly connected to one side of the upper surface of the barrier 7. One end of the pressure plate 8 is connected to a pressure plate 10 via a hinge 9. The pressure plate 10 can rotate along the hinge 9 and press against the pressure plate 8. A locking component is provided on the pressure plate 8 to prevent the pressure plate 10 from coming off. Both the pressure plate 8 and the pressure plate 10 are made of transparent plastic.

[0020] The upper surface of the pressure plate 8 is provided with an identification area 11 for indicating the placement position of the product to be tested; the pressure plate 10 includes an outer frame and a filter plate 12 disposed in the middle of the outer frame. When the pressure plate 10 rotates and presses against the pressure plate 8, the top view projection of the filter plate 12 covers the identification area 11. Specifically, the identification area 11 is a rectangular area enclosed by four engraved lines for quickly placing the product to be tested; the outer frame is a rigid structure to ensure uniform force during pressing; the filter plate 12 is a transparent plastic mesh plate with dense through holes. The through holes on the filter plate 12 ensure that air bubbles generated by minor leaks can pass through the filter plate 12 without obstruction and float to the observation area, avoiding the "false seal" phenomenon caused by the full contact of the transparent cover plate in traditional methods, and effectively reducing the missed detection rate.

[0021] The locking assembly includes at least one vertical screw 13 fixedly mounted on the upper surface of the pressure plate 8, with a corresponding clamping nut 14 fitted onto each vertical screw 13. The pressure plate 10 has a clearance groove 15 corresponding to the position of the vertical screw 13, the width of which is smaller than the outer diameter of the clamping nut 14. The width design of the clearance groove 15 allows the screw to pass smoothly when the pressure plate 10 is closed, and when the clamping nut 14 is tightened, the nut presses against the outer frame of the pressure plate 10, thereby generating a stable locking force. This structure is simple to operate, and the clamping force is adjustable and reliable.

[0022] The vertical screws 13 are symmetrically arranged relative to the longitudinal central axis of the marking area 11, and there are two of them, to ensure that the pressure plate 10 is subjected to balanced force during pressing, thus ensuring the accuracy of the test results.

[0023] The end of the air box 4 is equipped with a control panel 16, which has a display screen 17 for displaying the air pressure and a control knob 18 for adjusting the air supply. The control panel 16 integrates a pressure sensor and control circuit; the display screen 17 is used to display the inflation pressure in real time for easy monitoring by the operator; the control knob 18 is used to set and adjust the output air pressure to adapt to the testing standards of different product specifications.

[0024] The testing pool 3 is vertically divided into a testing area 31 and a draining area 32 by a partition 19. The water outlet pipe 6 includes a main pipe 61 located at the bottom of the testing area 31 and a secondary pipe 62 located at the bottom of the draining area 32. The positioning component is located in the testing area 31 of the testing pool 3, and the net 7 is installed in the testing area 31 and the draining area 32. Specifically, the partition 19 is integrally welded to the testing pool 3, and the net 7 is cut and welded to the testing area 31 and the draining area 32 respectively. The testing area 31 is used for airtightness testing; the draining area 32 is used to temporarily place the tested products to allow the surface moisture to drain naturally.

[0025] The top of the partition 19 is higher than the mounting plane of the net 7 so that the water level in the detection area 31 can completely submerge the product to be tested, while the draining area 32 can maintain a relatively low water level or no water accumulation, thus realizing the functional zoning of detection and draining.

[0026] Working Principle: When using this invention, first, sufficient clean water is injected into the testing area 31 of the testing pool 3 to ensure the water level reaches the set scale. Then, the air outlet 5 of the air chamber 4 is connected to the inlet of the product to be tested, and the testing pressure is set via the control knob 18. Next, the pressure plate 10 is opened, and the product to be tested is placed on the marking area 11 of the pressure plate 8. Then, the pressure plate 10 is closed, allowing the vertical screw 13 to pass through the corresponding clearance groove 15, and the clamping nut 14 is tightened, pressing the product to be tested firmly onto the pressure plate 8. At this point, the product is facing the filter plate 12 and is completely submerged in water. Then, the air chamber 4 is activated via the control panel 16 to inflate the product to the set pressure. During the pressure holding period, the operator observes whether continuous bubbles are generated in the product area. If bubbles are present, the product is deemed unqualified; if no bubbles are present, it is deemed qualified. After testing, the qualified product is moved to the draining area 32 to drain, and the next round of testing can then be performed.

[0027] This utility model achieves effective compression of the product to be tested through the design of the pressure plate 10 that combines the outer frame with the filter plate 12. At the same time, it ensures that the bubbles generated by the slight leakage can pass through the filter plate 12 without obstruction and float to the observation area, avoiding the "false seal" phenomenon caused by the full contact of the transparent cover plate in the traditional method, and effectively reducing the missed detection rate.

[0028] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A novel tooling for testing the airtightness of peritoneal dialysis skeleton components, characterized in that: It includes a base plate, support legs on the lower surface of the base plate, a test pool on the upper surface of the base plate, and an air box on one side of the test pool. The air box has an outlet pipe for pressurizing and supplying air to the product to be tested. The top of the testing pool is open to form a water inlet, and the bottom of the testing pool is provided with a water outlet pipe that penetrates the bottom plate, and a water outlet valve is installed on the water outlet pipe. The inside of the testing pool is fixedly equipped with a horizontal barrier net, and the barrier net is equipped with a positioning component that cooperates with the product to be tested; The positioning component includes a pressure plate fixedly connected to one side of the upper surface of the netting. One end of the pressure plate is connected to a pressure plate via a hinge. The pressure plate can rotate along the hinge and press against the pressure plate. A locking component is provided on the pressure plate to prevent the pressure plate from coming off. The upper surface of the pressure plate is provided with an identification area for indicating the placement position of the product to be tested; the pressure plate includes an outer frame and a filter plate disposed in the middle of the outer frame. When the pressure plate is rotated and pressed onto the pressure plate, the top view projection of the filter plate covers the identification area.

2. The novel peritoneal dialysis skeleton assembly airtightness testing fixture according to claim 1, characterized in that: The locking assembly includes at least one vertical screw fixedly mounted on the upper surface of the pressure plate, and each vertical screw is fitted with a corresponding clamping nut; the pressure plate is provided with a clearance groove corresponding to the position of the vertical screw, and the groove width of the clearance groove is smaller than the outer diameter of the clamping nut.

3. The novel peritoneal dialysis skeleton assembly airtightness testing tool according to claim 2, characterized in that: The vertical screws are arranged symmetrically with respect to the longitudinal central axis of the marking area, and there are two of them.

4. The novel peritoneal dialysis skeleton assembly airtightness testing fixture according to claim 1, characterized in that: The end of the air box is equipped with a control panel, which has a display screen showing the air pressure and a control knob for adjusting the air supply.

5. The novel peritoneal dialysis skeleton assembly airtightness testing fixture according to claim 1, characterized in that: The testing pool is vertically partitioned into a testing area and a draining area. The outlet pipe includes a main pipe located at the bottom of the testing area and a secondary pipe located at the bottom of the draining area. The positioning component is located in the testing area of ​​the testing pool, and the barrier net is installed in the testing area and the draining area.

6. The novel peritoneal dialysis skeleton assembly airtightness testing fixture according to claim 5, characterized in that: The top of the partition is higher than the mounting plane of the barrier net.

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