A syringe rubber plug leak detection device

Abstract

This utility model provides a syringe stopper sealing performance testing device, relating to the field of syringe stopper sealing performance testing technology. It includes: a base, a gantry frame fixedly connected to the top of the base, a movable plate inside the top of the gantry frame, and multiple positioning templates fixedly installed on the front side of the movable plate. When testing the syringe stopper sealing performance, this testing device places the syringe into the positioning templates, positioning the syringe so that the output end of the syringe bottom aligns with the testing mechanism. The testing mechanism injects a fixed amount of compressed gas into the syringe and maintains pressure, thereby quickly achieving the alignment of the syringe with the testing mechanism and the pressurization and pressure maintenance of the syringe, improving the efficiency of syringe stopper sealing performance testing.

Description

Technical Field

[0001] This utility model relates to the field of syringe stopper sealing detection technology, specifically a syringe stopper sealing detection device. Background Technology

[0002] As widely used instruments in clinical medicine, the quality of disposable sterile syringes directly affects medication safety and treatment efficacy. Among them, the sealing performance between the syringe stopper (i.e., piston) and the inner wall of the syringe barrel is one of the key indicators for measuring its quality. Poor sealing may lead to serious problems such as drug leakage, air ingress, inaccurate dosage, or microbial contamination, affecting patient safety. Traditional testing procedures often involve multiple steps such as manual loading, manual clamping, pressurizing and holding each syringe, manual observation or reading, and manual sorting. The sealing test process is relatively cumbersome and slow. Utility Model Content

[0003] The purpose of this application is to provide a syringe stopper sealing test device to solve the technical problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a syringe stopper sealing performance testing device, comprising: a base, a gantry frame fixedly connected to the top of the base, a movable plate provided inside the top of the gantry frame, and multiple positioning templates fixedly installed on the front side of the movable plate; The testing mechanism, located on the top of the base, is used to test the syringe stopper. The testing mechanism includes: a testing platform fixedly installed on the top of the base; a connecting seat corresponding to the positioning template fixedly installed on the top of the testing platform; a one-way valve inside each connecting seat; a testing head threadedly connected to each connecting seat; and a pressure gauge corresponding to the connecting seat located on the front side of the base.

[0005] Furthermore, an electric valve is fixedly mounted on the testing platform, and the output end of the electric valve is connected to the connecting seat.

[0006] Furthermore, an air compressor is installed inside the base, and the output end of the air compressor is connected to the input end of the electric valve through an air pipe.

[0007] Furthermore, a sealing ring a is provided at the top of the connecting seat, and a sealing ring b is fixedly installed at the top of the detection head.

[0008] Furthermore, a pneumatic rod is fixedly installed on the top of the gantry frame, and the output end of the bottom of the pneumatic rod is connected to the top of the moving plate.

[0009] Furthermore, guide grooves are provided on opposite sides of the gantry frame, and guide blocks are fixedly connected to opposite sides of the movable plate, with the guide blocks located inside the guide grooves.

[0010] The beneficial effects of this utility model are: The advantage of this invention is that when testing the sealing performance of the syringe stopper, the syringe is placed in the positioning template, and the positioning template positions the syringe so that the output end at the bottom of the syringe is connected to the testing mechanism. The testing mechanism injects a certain amount of compressed gas into the syringe and maintains the pressure, thereby quickly achieving the connection between the syringe and the testing mechanism, as well as pressurizing and maintaining the pressure inside the syringe, thus improving the efficiency of testing the sealing performance of the syringe stopper. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the movable plate structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the testing platform structure of this utility model.

[0016] Figure 5 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0017] The following are the labeling elements in the figure: 1. Base; 11. Gantry; 12. Moving plate; 13. Positioning template; 2. Testing table; 21. Connecting seat; 22. One-way valve; 23. Testing head; 24. Pressure gauge; 25. Electric valve; 26. Air compressor; 27. Sealing ring a; 28. Sealing ring b; 29. ​​Pneumatic rod; 210. Guide groove; 211. Guide block. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] As attached Figures 1 to 5 The device for testing the sealing performance of syringe stoppers includes: a base 1, a gantry frame 11 fixedly connected to the top of the base 1, a movable plate 12 provided inside the top of the gantry frame 11, and multiple positioning templates 13 fixedly installed on the front side of the movable plate 12; and a testing mechanism located on the top of the base 1 for testing syringe stoppers.

[0021] Specifically, when testing the sealing performance of the syringe stopper, the syringe is placed into the positioning template 13 to position it. The positioning template 13 is adapted to the size of the syringe. When testing the sealing performance of syringes and stoppers of different specifications, the positioning template 13 adapted to the syringe is replaced. Then, a certain amount of compressed gas is injected into the syringe through the testing mechanism. The pressure inside the syringe is checked to determine whether there is a leak in the pressure inside the syringe, thereby testing the sealing performance of the syringe stopper.

[0022] The testing mechanism includes: a testing platform 2, a connecting seat 21, a one-way valve 22, a testing head 23, and a pressure gauge 24. The testing platform 2 is fixedly installed on the top of the base 1. The connecting seat 21 corresponding to the positioning template 13 is fixedly installed on the top of the testing platform 2. The connecting seat 21 is equipped with a one-way valve 22. The testing head 23 is threadedly connected to the connecting seat 21. The pressure gauge 24 corresponding to the connecting seat 21 is located on the front side of the base 1. An electric valve 25 is fixedly installed on the testing platform 2. The output end of the electric valve 25 is connected to the connecting seat 21. An air compressor 26 is located inside the base 1. The output end of the air compressor 26 is connected to the input end of the electric valve 25 through an air pipe.

[0023] During testing: The moving plate 12 moves downward, causing the positioning template 13 to move downward, so that the injection head at the bottom of the syringe is inserted into the testing head 23. Air is compressed by the air compressor 26, and then the electric valve 25 opens, allowing the compressed gas to enter the connecting seat 21. The compressed air opens the one-way valve 22 and enters the testing head 23, allowing the compressed gas to enter the syringe. The compressed gas pushes the rubber stopper upward until the top of the injection rod touches the positioning template 13. The electric valve 25 closes after a few seconds. The pressure gauge 24 is connected to the internal cavity of the connecting seat 21 and can detect the air pressure inside the syringe. Then, by observing the pressure gauge 24, it can be determined whether the air pressure has dropped, thus detecting syringes with unqualified sealing. After the test is completed, the moving plate 12 moves upward, causing the syringe to be pulled out of the testing head 23, and the air pressure inside the syringe is discharged.

[0024] In a preferred embodiment, a sealing ring a27 is provided at the top of the connecting seat 21, and a sealing ring b28 is fixedly installed at the top of the detection head 23.

[0025] Furthermore, sealing ring a27 can seal the connection seat 21 and the detection head 23, and sealing ring b28 can seal the syringe and the connection seat 21, thereby preventing air pressure from leaking from the docking point.

[0026] In a preferred embodiment, a pneumatic rod 29 is fixedly installed on the top of the gantry frame 11, and the output end of the pneumatic rod 29 is connected to the top of the moving plate 12. Guide grooves 210 are respectively opened on opposite sides of the gantry frame 11, and guide blocks 211 are fixedly connected to opposite sides of the moving plate 12. The guide blocks 211 are respectively located inside the guide grooves 210.

[0027] Furthermore, by controlling the output end of the pneumatic rod 29 to push out through the control panel, the moving plate 12 is moved downward, thereby inserting the injection head of the syringe into the detection head 23. By controlling the output end of the pneumatic rod 29 to retract, the moving plate 12 is moved upward, thereby pulling the injection head of the syringe out of the detection head 23. When the moving plate 12 moves, it drives the guide block 211 to move along the inside of the guide groove 210, thereby guiding the moving plate 12.

[0028] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0029] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A syringe stopper sealing performance testing device, characterized in that, include: The base (1) is fixedly connected to the top of the base (1), and a movable plate (12) is provided inside the top of the gantry (11). Multiple positioning templates (13) are fixedly installed on the front side of the movable plate (12). The testing mechanism is located on the top of the base (1) and is used to test the syringe stopper. The testing mechanism includes: a testing platform (2) fixedly installed on the top of the base (1), a connecting seat (21) corresponding to the positioning template (13) fixedly installed on the top of the testing platform (2), a one-way valve (22) is provided inside the connecting seat (21), a testing head (23) is threadedly connected to the connecting seat (21), and a pressure gauge (24) corresponding to the connecting seat (21) is provided on the front side of the base (1).

2. The syringe stopper sealing performance testing device according to claim 1, characterized in that, The testing platform (2) is fixedly equipped with an electric valve (25), and the output end of the electric valve (25) is connected to the connecting seat (21).

3. The syringe stopper sealing performance testing device according to claim 2, characterized in that, An air compressor (26) is installed inside the base (1), and the output end of the air compressor (26) is connected to the input end of the electric valve (25) through an air pipe.

4. The syringe stopper sealing performance testing device according to claim 1, characterized in that, The top of the connector (21) is provided with a sealing ring a (27), and the top of the detection head (23) is fixedly installed with a sealing ring b (28).

5. The syringe stopper sealing test device according to claim 1, characterized in that, A pneumatic rod (29) is fixedly installed on the top of the gantry (11), and the output end of the bottom of the pneumatic rod (29) is connected to the top of the moving plate (12).

6. The syringe stopper sealing performance testing device according to claim 1, characterized in that, The gantry (11) has guide grooves (210) on both sides, and the movable plate (12) has guide blocks (211) fixedly connected to both sides. The guide blocks (211) are located inside the guide grooves (210).

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