Device for testing environmental stress resistance of medical latex rubber

Abstract

The utility model relates to the field of environmental stress resistance testing in the medical field, in particular to a medical latex rubber environmental stress resistance testing device which comprises a pressure cooker, a pressure cooker inner container for placing a sample to be tested is arranged in the pressure cooker, and the upper portion of the pressure cooker is connected with an oxygen bottle and an opening and closing valve through a connecting pipe. A pressure gauge and a pressure cooker heavy hammer are mounted at the top of the pressure cooker, the pressure gauge is used for monitoring the pressure value of oxygen in the pressure cooker inner container, and when the set pressure is reached, the pressure cooker heavy hammer jacks up and closes the opening and closing valve, an oxygen environment with the set pressure value is provided for a sample to be tested, and environmental stress testing is performed on the sample to be tested.

Description

Technical Field

[0001] The utility model relates to the field of testing environmental stress resistance in the medical field, and specifically relates to a medical latex rubber environmental stress resistance testing device. Background Technique

[0002] There are many detection requirements for medical devices, and the standard specifications also escort the stable and safe development of this industry. The test item of environmental stress resistance is also an extremely important detection item, so the related equipment and auxiliary equipment also reflect their importance. Since this test is only for the environmental stress resistance test of latex / rubber products, it needs to be heated to 70°C in a pure oxygen environment with a certain pressure. At present, the popularity of existing professional equipment is relatively low, and there are few test devices.

[0003] In view of this, this application proposes a medical latex rubber environmental stress resistance testing device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a medical latex rubber environmental stress resistance testing device in view of the deficiencies of the prior art.

[0005] In order to solve the above technical problems, the following technical solutions are adopted:

[0006] A medical latex rubber environmental stress resistance testing device, characterized in that: it includes a pressure cooker, the inside of the pressure cooker is provided with a pressure cooker inner liner for placing the sample to be tested, the upper part of the pressure cooker is connected with an oxygen cylinder and an opening and closing valve through a connecting pipe, the top of the pressure cooker is installed with a pressure gauge and a pressure cooker weight, the pressure gauge is used to monitor the oxygen pressure value in the pressure cooker inner liner, when the set pressure is reached, the pressure cooker weight is lifted, the opening and closing valve is closed, and an oxygen environment with a set pressure value is realized for the sample to be tested, and the environmental stress test is carried out on the sample to be tested.

[0007] Further, the sample to be tested is a latex sample or a silicone sample.

[0008] Further, the pressure cooker is used to maintain the pressure of the environmental stress resistance test environment of the sample to be tested.

[0009] Further, a one-way valve is provided on the connecting pipe, and oxygen is filled into the pressure cooker internally from the oxygen cylinder unidirectionally through the one-way valve, and the opening and closing valve is closed after the test pressure is reached.

[0010] Further, the upper part of the pressure cooker is provided with a pressure cooker upper cover.

[0011] Further, an oxygen cylinder valve is provided on the oxygen cylinder.

[0012] Further, after one end of the oxygen cylinder valve connected to the oxygen cylinder is disassembled, the pressure cooker, the pressure cooker, the one-way valve and the opening and closing valve are placed as a whole in an oven environment for crack testing.

[0013] Due to the adoption of the above technical solution, the following beneficial effects are achieved:

[0014] The utility model relates to a medical latex rubber environmental stress resistance testing device, which forms a pure oxygen testing environment under certain pressure conditions through devices including a pressure cooker, a pressure gauge, a one-way valve and an opening and closing valve, so as to facilitate the measurement of the environmental stress resistance of latex / rubber fittings. Description of the Drawings

[0015] The following further describes the utility model with reference to the drawings:

[0016] Figure 1 is a schematic structural diagram of a medical latex rubber environmental stress resistance testing device according to Embodiment 1 of the utility model.

[0017] In the figure: 1 - oxygen cylinder; 2 - oxygen cylinder valve; 3 - opening and closing valve; 4 - one-way valve; 5 - pressure gauge; 6 - pressure cooker; 7 - pressure cooker inner liner; 8 - connecting pipe; 9 - pressure cooker weight; 10 - pressure cooker upper cover. Specific Embodiments

[0018] To make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below through the drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concept of the utility model. Embodiment

[0019] As Figure 1 shown, a medical latex rubber environmental stress resistance testing device according to an embodiment of the utility model, a medical latex rubber environmental stress resistance testing device, characterized in that: it includes a pressure cooker 6, which is a pressure device for providing and maintaining the test of latex / rubber. The pressure cooker 6 is internally provided with a pressure cooker inner liner 7 for placing the sample to be tested. The upper part of the pressure cooker 6 is connected with an oxygen cylinder 1 and an opening and closing valve 3 through a connecting pipe 8. The top of the pressure cooker 6 is provided with a pressure gauge 5 and a pressure cooker weight 9. The pressure gauge 5 is used to monitor the oxygen pressure value in the pressure cooker inner liner 7. When the set pressure is reached, the pressure cooker weight 9 is lifted to close the opening and closing valve 3, providing an oxygen environment with a set pressure value for the sample to be tested, and performing environmental stress testing on the sample to be tested.

[0020] Further, the sample to be tested is a latex sample or a silicone sample.

[0021] Furthermore, the pressure cooker 6 is used to maintain the pressure in the test environment for the environmental stress test of the sample to be tested.

[0022] Furthermore, a one-way valve 4 is provided on the connecting pipe 8, and oxygen is filled into the pressure cooker 6 from the oxygen cylinder 1 unidirectionally through the one-way valve 4. After reaching the test pressure, the opening and closing valve 3 is closed, and the connection between the opening and closing valve 3 (3) and one end of the oxygen cylinder 1 is detachable.

[0023] Furthermore, a pressure cooker upper cover 10 is provided on the upper part of the pressure cooker 6.

[0024] Furthermore, an oxygen cylinder valve 2 is provided on the oxygen cylinder 1.

[0025] Furthermore, after one end of the oxygen cylinder valve 2 connected to the oxygen cylinder 1 is detached, the pressure cooker 6, the pressure cooker 6, the one-way valve 4, and the opening and closing valve 3 are placed as a whole in an oven environment at 70°C ± 2°C for 96 hours, and then placed at room temperature for 16 hours to observe whether there are cracks visible to the naked eye on the surface of the latex / rubber for testing.

[0026] Working principle of the present utility model: Cover the pressure cooker upper cover 10. Through the oxygen cylinder 1 and the oxygen cylinder valve 2 on the oxygen cylinder 1 (1), connect the opening and closing valve 3 through the connecting pipe 8, then connect to the one-way valve 4 (4), and then connect to the pressure cooker 6. A pressure gauge 5 is installed on the top of the pressure cooker 6 to monitor the oxygen pressure value in the inner liner 7 of the pressure cooker. After reaching a certain set pressure, the pressure cooker weight 9 is lifted, and the opening and closing valve 3 is closed. In this way, an oxygen environment with a set pressure value can be realized for the latex / rubber and other objects to be tested in the inner liner 7 of the pressure cooker, and the environmental stress test of the latex / rubber can be carried out. Oxygen is supplied to the inside of the pressure cooker 6 through the opening and closing valve 3 and the one-way valve 4. By reaching the pressure value of the oxygen environment required by the standard inside the pressure cooker 6, the stress aging of the medical latex / rubber under a certain pressure condition in the oxygen environment is realized, and the test purpose of the latex / rubber is achieved.

[0027] The above are only specific embodiments of the present utility model, but the technical features of the present utility model are not limited thereto. Any simple changes, equivalent replacements, or modifications made based on the present utility model to solve substantially the same technical problems and achieve substantially the same technical effects are all covered by the protection scope of the present utility model.

Claims

1. A medical latex rubber environmental stress resistance testing device, characterized in that: The invention comprises a pressure cooker, wherein a pressure cooker inner tank is provided inside the pressure cooker for placing a sample to be tested, an oxygen cylinder and an on-off valve are connected to the upper part of the pressure cooker through a connecting pipe, a pressure gauge and a pressure cooker weight are installed on the top of the pressure cooker, the pressure gauge is used to monitor the oxygen pressure value in the pressure cooker inner tank, when the set pressure is reached, the pressure cooker weight is lifted up, the on-off valve is closed, and an oxygen environment with the set pressure value is realized for the sample to be tested, so as to perform an environmental stress test on the sample to be tested.

2. A medical latex rubber environmental stress resistance testing device according to claim 1, characterized in that: The sample to be tested is a latex sample or a silica gel sample.

3. A medical latex rubber environmental stress resistance testing device according to claim 1, characterized in that: The pressure cooker is used to maintain the pressure of the sample to be tested in the environmental stress resistance test environment.

4. A medical latex rubber environmental stress resistance testing device according to claim 1, characterized in that: A one-way valve is provided on the connecting pipe, and oxygen is filled from the oxygen cylinder into the pressure cooker in one direction through the one-way valve. When the test pressure is reached, the opening and closing valve is closed.

5. A medical latex rubber environmental stress resistance testing device according to claim 1, characterized in that: The upper part of the pressure cooker is provided with a pressure cooker upper cover.

6. A medical latex rubber environmental stress resistance testing device according to claim 1, characterized in that: The oxygen cylinder is provided with an oxygen cylinder valve.

7. A medical latex rubber environmental stress resistance testing device according to claim 6, characterized in that: After one end of the oxygen cylinder valve is disassembled from the end connected to the oxygen cylinder, the pressure cooker, the pressure cooker, the one-way valve and the opening and closing valve are put into an oven environment as a whole for crack testing.

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