Corrosion device in pretreatment process of nickel release sample
By designing corrosion devices suitable for different samples, the nylon mesh screen and sealing structure are used to solve the problems of excessive corrosion of samples and corrosion liquid volatility, and the stability and efficiency of nickel release test are achieved.
Patent Information
- Application Number
- CN202421037874.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-14
AI Technical Summary
In the prior art, the corrosion device is difficult to adapt to samples of different sizes and shapes during the nickel release sample pretreatment process, resulting in unstable corrosion process and the corrosion liquid is easy to volatilize, affecting the test results.
A corrosion device including a lower tray, a middle shell and a circular upper cover is designed. The bottom of the middle shell is fixedly connected to the circular nylon mesh screen, the outer surface fixing rod is matched with the limit block, the rubber pad and the limit slot are A sealing structure is formed to ensure the device is stable and easy to clean.
Effectively prevent excessive corrosion of the sample and volatilization of the corrosion liquid, improve the robustness and operating efficiency of the device, and ensure the accuracy and simplicity of nickel release test.
Smart Images
Figure CN222212422U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sample corrosion devices, in particular to a corrosion device in the pre-treatment process of a nickel-releasing sample. Background Art
[0002] Nickel is a metal material commonly used in jewelry manufacturing, but at the same time, nickel has potential allergies and harm to human skin. It is one of the most common causes of allergic contact dermatitis and has the risk of causing cancer and teratogenicity. Therefore, China has formulated national standards "GB / T19719-2005 Spectrometric method for determination of nickel release in jewelry" and "GB28480-2012 Provisions on the limit of harmful elements in jewelry" with reference to the EU's nickel release standards. The nickel release rate of jewelry is limited and the nickel release test method is standardized. Nickel release is closely related to factors such as the material, plating, and manufacturing process of the product. Different products may have different degrees of nickel release problems, so it is very necessary to detect and analyze the product. In the prior art, since the step of corroding the sample must be completed in the pre-treatment of testing nickel release, the sample needs to be suspended in the corrosive liquid and the corrosive liquid needs to be heated to achieve the corrosion effect. However, the size and shape of the tested samples are different, so it is difficult to find a suitable device to complete the corrosion process of nickel release, which has certain obstacles and troubles to the experiment. Utility Model Content
[0003] In view of the deficiencies of the prior art, the utility model provides a corrosion device in the pre-treatment process of nickel release samples to solve the existing problems raised in the above background technology.
[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a corrosion device for nickel release sample pretreatment process, including a lower tray, a middle shell and a circular upper cover, the bottom of the middle shell is fixedly connected with a circular nylon mesh screen, the outer surface of the middle shell is fixedly connected with a fixed clamping rod, the output end of the fixed clamping rod is fixedly connected with a limiting block, the edge of the top of the lower tray is fixedly connected with a rubber pad, the outer surface of the rubber pad is fixedly connected with a limiting fixing ring, and a limiting clamping groove is provided inside the limiting fixing ring.
[0005] Preferably, the inner surface of the circular upper cover is matched with the top of the middle shell, and the inner surface of the limiting fixing ring is matched with the outer surface of the middle shell.
[0006] Preferably, the fixing clamp rods are symmetrically arranged on both sides of the middle shell, and the limiting clamp grooves are symmetrically arranged inside the limiting fixing ring.
[0007] Preferably, the outer surface of the fixed clamp rod is extruded and fitted with the inner surface of the limiting clamp slot, and the limiting clamp slot is arranged to be L-shaped.
[0008] Preferably, the lower tray, the middle shell and the circular upper cover are all made of PVC material. Beneficial Effects
[0009] The utility model provides a corrosion device in the pre-treatment process of nickel release samples. It has the following beneficial effects:
[0010] (1) The corrosion device in the nickel release sample pretreatment process can cover the sample and the corrosion liquid through the circular upper cover, and also avoid the problem of volatilization when the corrosion liquid is heated. The circular nylon mesh screen is used to place the sample to be corroded, which solves the problem that the sample falls into the corrosion liquid and is over-corroded during the nickel release pretreatment test corrosion process. The lower tray is used to place the corrosion liquid. The device is easy to operate and can improve efficiency. It is also easy to disassemble and clean after the sample corrosion is completed.
[0011] (2) The corrosion device in the nickel release sample pretreatment process can ensure that the whole composed of the middle shell and the circular nylon mesh screen is firmly installed on the lower tray through the cooperation between the fixing rod, the limit block, the rubber pad and the limit slot, so as to avoid the lower tray and the upper structure being separated when the whole device is taken and placed, thereby improving the firmness of the whole device. In addition, the gap between the lower tray and the middle shell is sealed by the rubber pad, which can prevent the corrosion liquid in the lower tray from leaking out of the gap when the whole device is taken and placed. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the overall split structure of the utility model;
[0014] Figure 3 It is a structural schematic diagram of the middle shell of the utility model;
[0015] Figure 4 It is a structural schematic diagram of the lower tray of the utility model.
[0016] In the figure: 1. lower tray; 2. middle shell; 3. round upper cover; 4. round nylon mesh screen; 5. fixing rod; 6. limit block; 7. rubber pad; 8. limit fixing ring; 9. limit slot. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example
[0018] like Figure 1-4 As shown, the utility model provides a corrosion device for nickel release sample pretreatment process, including a lower tray 1, a middle shell 2 and a circular upper cover 3, the bottom of the middle shell 2 is fixedly connected with a circular nylon mesh 4, the outer surface of the middle shell 2 is fixedly connected with a fixed clamping rod 5, the output end of the fixed clamping rod 5 is fixedly connected with a limiting block 6, the edge of the top of the lower tray 1 is fixedly connected with a rubber pad 7, the outer surface of the rubber pad 7 is fixedly connected with a limiting fixing ring 8, and a limiting clamping groove 9 is provided inside the limiting fixing ring 8.
[0019] Specifically, the inner surface of the circular upper cover 3 is matched with the top of the middle shell 2 , and the inner surface of the limiting fixing ring 8 is matched with the outer surface of the middle shell 2 .
[0020] Specifically, the fixing rods 5 are symmetrically arranged on both sides of the middle shell 2 , and the limiting slots 9 are symmetrically arranged inside the limiting fixing ring 8 .
[0021] Specifically, the outer surface of the fixed clamping rod 5 is pressed and matched with the inner surface of the limiting clamping slot 9, and the limiting clamping slot 9 is set to be L-shaped.
[0022] Specifically, the lower tray 1 , the middle shell 2 and the circular upper cover 3 are all made of PVC material.
[0023] The working principles and beneficial effects of the above embodiments.
[0024] When in use, the entire device is cylindrical, with a diameter of 20 cm, and is divided into three detachable layers. The upper layer is a circular upper cover 3 made of PVC, which is used to cover the sample and the corrosive liquid, and also to avoid the problem of volatilization when the corrosive liquid is heated. The middle is composed of a middle shell 2 and a circular nylon mesh 4. The aperture of the circular nylon mesh 4 is 0.9 mm, which is used to place the sample to be corroded, and solves the problem of excessive corrosion caused by the sample falling into the corrosive liquid during the nickel release pretreatment test corrosion process. The lower layer is a lower tray 1 made of PVC material, which is used to place the corrosive liquid. The fixed clamp rod 5 on the middle shell 2 is aligned with the bottom of the tray. The vertical part of the quasi-limiting slot 9 is moved, and the fixed clamping rod 5 is moved to the horizontal part of the limiting slot 9. At this time, the whole composed of the middle shell 2 and the circular nylon mesh 4 is firmly installed on the lower tray 1, and under the limiting action of the fixed clamping rod 5 and the limiting block 6, the bottom of the middle shell 2 is pressed on the upper surface of the rubber pad 7. Under the obstruction of the rubber pad 7, the gap between the lower tray 1 and the middle shell 2 is sealed, which can prevent the corrosion liquid in the lower tray 1 from leaking from the gap when the whole device is taken and placed. The device is easy to operate and can also improve efficiency. It is also easy to disassemble and clean after the sample corrosion is completed.
[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".
[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A corrosion device for nickel release sample pretreatment, comprising a lower tray (1), a middle shell (2) and a circular upper cover (3), characterized in that: A circular nylon mesh screen (4) is fixedly connected to the bottom of the middle shell (2), a fixed clamping rod (5) is fixedly connected to the outer surface of the middle shell (2), an output end of the fixed clamping rod (5) is fixedly connected to a limit block (6), a rubber pad (7) is fixedly connected to the edge of the top of the lower tray (1), a limit fixing ring (8) is fixedly connected to the outer surface of the rubber pad (7), and a limit fixing groove (9) is provided inside the limit fixing ring (8).
2. The corrosion device for nickel release sample pretreatment according to claim 1, characterized in that: The inner surface of the circular upper cover (3) is matched with the top of the middle shell (2), and the inner surface of the limiting fixing ring (8) is matched with the outer surface of the middle shell (2).
3. The corrosion device for nickel release sample pretreatment according to claim 1, characterized in that: The fixing clamp rods (5) are symmetrically arranged on both sides of the middle shell (2), and the limiting clamp grooves (9) are symmetrically arranged inside the limiting fixing ring (8).
4. The corrosion device for nickel release sample pretreatment according to claim 1, characterized in that: The outer surface of the fixed clamping rod (5) is pressed and adapted to the inner surface of the limiting clamping groove (9), and the limiting clamping groove (9) is arranged to be L-shaped.
5. The corrosion device for nickel release sample pretreatment according to claim 1, characterized in that: The lower tray (1), the middle shell (2) and the circular upper cover (3) are all made of PVC material.