A formaldehyde determination reagent bottle for automotive interior parts

Abstract

The utility model belongs to the field of formaldehyde determination, specifically discloses a formaldehyde determination reagent bottle for automotive interior parts, including bottle body, be equipped with the plastic support in the inner chamber of bottle body, be equipped with the inner cover and the outer cover at the bottle mouth of bottle body, the one side of inner cover relative bottle body is equipped with small -size chamber, be equipped with the height adjusting structure that can make the sample under test move in small -size chamber, be equipped with the sliding baffle that coordinates with height adjusting structure on the lateral wall of one side of small -size chamber. The utility model is convenient to operate, is applicable to the formaldehyde test of any material quality, size, shape's sample under test, has improved the accuracy and reliability of test result greatly, and test efficiency is high, and the sealing property is good.

Description

Technical Field

[0001] This utility model belongs to the field of formaldehyde determination, specifically relating to a formaldehyde determination reagent bottle for automotive interior parts. Background Technology

[0002] During the automobile production process, the formaldehyde emission levels of materials used in interior components, such as plastics, rubber, fabrics, and leather, are measured to see if they meet safety standards.

[0003] Figure 1 The existing formaldehyde testing reagent bottle, according to VDA275, requires cutting the sample 1 to a size of 40mm*100mm and suspending it in a 1L sample bottle 5 containing 50ml of distilled water 4 via a hook 3 on the outer cap 2. During suspension, the bottom of the sample 1 must be 40mm above the surface of the distilled water 4. After a period of constant temperature heating, it is cooled to room temperature. Then, a certain amount of the formaldehyde solution absorbed by the distilled water 4 is taken out, and a certain amount of ammonium ions and acetylacetone are added. After a period of reaction, a yellow complex, diacetyl dihydrorutidine (DDL), is formed. The absorbance is then measured at a wavelength of 412nm using a UV spectrophotometer to calculate the formaldehyde content. However, the existing reagent bottle has the following problems:

[0004] 1. For small parts, granular materials, and irregularly shaped samples, the samples need to be arranged in a size of 40mm*100mm to determine the specific quantity. Then, the required number of test samples 1 are connected and suspended in the sample bottle 5 containing 50ml of distilled water 4 by hook 3. Since the hook 3 is fixed on the outer cover 2, the length of the test sample 1 after connection is not fixed, and the distance between the bottom of the test sample 1 and the liquid surface of the distilled water 4 cannot be guaranteed, thus affecting the accuracy and reliability of the test results.

[0005] 2. Some samples to be tested, such as plastic parts like buckles and clips, do not have holes. To connect them, holes need to be drilled. However, their small or irregular shape or hard material increases the difficulty of drilling, thus reducing testing efficiency.

[0006] 3. Because the outer cover 2 has a through hole for connecting the hook 3, the sealing of the reagent bottle is affected, which further affects the accuracy and reliability of the test results. Utility Model Content

[0007] The purpose of this invention is to solve the above-mentioned problems by providing a formaldehyde testing reagent bottle for automotive interior parts. This reagent bottle is suitable for formaldehyde testing of samples of any material, size, and shape, greatly improving the accuracy and reliability of the test results, with high testing efficiency and good sealing.

[0008] To achieve the above objectives, this utility model provides a formaldehyde testing reagent bottle for automotive interior parts, comprising a bottle body, a plastic support in the inner cavity of the bottle body, an inner cap and an outer cap at the bottle mouth, a small chamber on the side of the inner cap opposite the bottle body, a height adjustment structure that allows the sample to be tested to move within the small chamber, and a sliding baffle that cooperates with the height adjustment structure on the side wall of one side of the small chamber.

[0009] As a further optimization, the height adjustment structure includes two bearings, which are fixed in a small cavity. A hollow shaft is provided on the inner ring of the two bearings. A fixed shaft is provided at the center of the hollow shaft. Both ends of the fixed shaft are fixedly connected to the side walls on both sides of the small cavity. The fixed shaft is fixedly connected to one end of a hairspring, and the other end of the hairspring is connected to the inner wall of the hollow shaft. A plastic cable is wound on the outer wall of the hollow shaft. One end of the plastic cable passes through the outlet of the small cavity and is connected to a plastic hook.

[0010] As a further optimization, the sliding baffle includes a sliding block, a connecting plate, and a baffle. The connecting plate is vertically connected to the sliding block. The connecting plate passes through the mounting port on the side wall of the small chamber and is connected to the baffle. The baffle has knurling or texture on one side relative to the height adjustment structure.

[0011] As a further optimization, the plastic support includes a support surface and support columns. The support surface is mesh-like and has multiple vent holes. The bottom of the support surface is provided with multiple downward-extending support columns. The plastic support is placed in the inner cavity of the bottle body through the multiple support columns.

[0012] Advantages and beneficial effects of this utility model

[0013] 1. This utility model has a simple structure and is easy to operate. It is suitable for formaldehyde testing of samples of any material, size and shape, which greatly improves the accuracy and reliability of the test results, has high testing efficiency and good sealing performance.

[0014] 2. This utility model has a small chamber on the side of the inner cap opposite the bottle body. The height adjustment structure in the small chamber can adjust the suspension height of connected small parts, granular materials, and irregularly shaped samples to ensure the distance of different types of test samples to the surface of distilled water, thereby improving the accuracy and reliability of the test results.

[0015] 3. This utility model has a plastic support in the inner cavity of the bottle. The height of the support surface of the plastic support is 40mm above the surface of the distilled water. For some samples that are difficult to drill, such as plastic parts such as buckles and clips, they can be placed on the support surface for testing, thereby improving the testing efficiency.

[0016] 4. This utility model has an inner cap and an outer cap at the bottle mouth. A height adjustment structure is connected by a small chamber added to the inner cap. The sample to be tested is hung by a plastic hook in the height adjustment structure. Therefore, the problem of poor sealing caused by the opening of the outer cap is solved, and the accuracy and reliability of the test results are further improved. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an existing formaldehyde testing reagent bottle;

[0019] Figure 2 This is a schematic diagram of the structure of the formaldehyde testing reagent bottle provided in this embodiment of the utility model;

[0020] Figure 3 This is a perspective view of the interior of the small cavity provided in the embodiment of this utility model;

[0021] Figure 4 This is a perspective view of the interior of the hollow shaft provided in this embodiment of the utility model.

[0022] Reference numerals: 1. Bottle body; 2. Plastic bracket; 21. Support surface; 22. Support column; 3. Inner cap; 4. Outer cap; 5. Small chamber; 5. Outlet; 51. Mounting port; 52. Height adjustment structure; 6. Bearing; 61. Hollow shaft; 62. Fixed shaft; 63. Swivel spring; 64. Plastic cable; 65. Plastic hook; 66. Sliding baffle; 7. Sliding block; 71. Connecting plate; 72. Baffle; 73. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", 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 this utility model.

[0024] like Figure 2As shown, a formaldehyde testing reagent bottle for automotive interior parts includes a bottle body 1, which is made of PP material and is cylindrical with an external thread at the mouth. An inner cavity contains a plastic support 2 whose outer diameter matches the size of the bottle mouth. The plastic support 2 includes a circular support surface 21 and three support pillars 22 located at the bottom of the support surface 21. The support surface 21 is mesh-like and has multiple vent holes for supporting the sample to be tested. The plastic support 2 is placed in the inner cavity of the bottle body 1 via the support pillars 22. By calculating the length of the support pillars 22, the distance between the sample to be tested and the surface of distilled water can be maintained at 40 mm. The specific length calculation is as follows: Place an appropriate amount of distilled water into the bottle 1 (the amount of distilled water depends on the different testing standards; in this embodiment, VDA275 is used to determine the formaldehyde standard, so 50 ml of distilled water needs to be added). Then, determine H1 by measuring the height of the distilled water in the bottle. Next, determine H2 according to the standard (in this embodiment, VDA275 is used to determine formaldehyde, so the height of the sample to be tested from the distilled water surface is 40 mm). H1 + H2 is the length of the support column 22. Placing the plastic bracket 2 into the bottle 1 will ensure that the height of the support surface 21 from the liquid surface meets the requirements of the testing standard.

[0025] The bottle body 1 has an inner cap 3 and an outer cap 4 at its mouth. The inner cap 3 is made of PP material and can be circular. It is placed in a downward groove on the inner wall of the bottle mouth. For easy handling, a plastic handle can be provided on the top of the inner cap 3. The inner cap 3 can also be circular with a downward folded flange in the circumferential direction. The inner cap 3 is fastened to the bottle mouth by the flange. A small chamber 5 is provided in the middle of the side of the inner cap 3 opposite to the bottle body 1. The small chamber 5 has a height adjustment structure 6 that allows the sample to be moved up and down. To facilitate the installation of the height adjustment structure 6, the small chamber 5 is formed by the chamber and the cover plate being snapped together. The side wall of the small chamber 5 has a sliding baffle 7 that cooperates with the height adjustment structure 6. The outer cap 4 is made of PP material and has an internal thread on the lower part of its inner wall that is screwed to the bottle body 1.

[0026] As a further optimization, such as Figure 3 and Figure 4As shown, the height adjustment structure 6 includes two bearings 61 arranged side by side. The height adjustment structure 6 is fixed in the small chamber 5 by the two bearings 61. A hollow shaft 62 is provided on the inner ring of the two bearings 61. A fixed shaft 63 is provided at the center of the hollow shaft 62. The two ends of the fixed shaft 63 are fixedly connected to the side walls of the front and rear sides of the small chamber 5. One end of the fixed shaft 63 is fixedly connected to a hairspring 64, and the other end of the hairspring 64 is connected to the inner wall of the hollow shaft 62. When the spindle 62 rotates, the hairspring 64 can store or release elastic potential energy. A plastic cable 65 is wound on the outer wall of the hollow spindle 62. One end of the plastic cable 65 passes through the outlet 51 and exits the small chamber 5 to connect with the plastic hook 66. The plastic hook 66 is used to suspend the sample to be tested. In use, an external force is applied to the plastic cable 65 to exert a downward force. The hollow spindle 62 can be rotated through the bearing 61 to adjust the length of the plastic cable 65, thereby adapting to samples of different sizes.

[0027] As a further optimization, such as Figure 2 As shown, the sliding baffle 7 includes a sliding block 71, a connecting plate 72, and a baffle 73. The connecting plate 72 is vertically connected to the sliding block 71, and the connecting plate 72 passes through the mounting port 52 on the side wall of the small chamber 5 and connects to the arc-shaped baffle 73. The side of the sliding baffle 7 opposite to the hollow shaft 62 has knurling, stripes, or other textures to increase the coefficient of friction. The arc-shaped baffle 73 is controlled to contact the hollow shaft 62 by moving up and down along the mounting port 52, thereby controlling whether the hollow shaft 62 stops rotating.

[0028] Testing process

[0029] When testing for formaldehyde content, first pour 50ml of distilled water into bottle 1 according to the testing standard. Then, place the plastic support 2, which meets the height requirements, into bottle 1 and mark it on the outer wall of the bottle. Depending on the shape and size of the sample to be tested, the following methods may be used:

[0030] ① For samples with regular shapes, cut them to 40mm*100mm size according to the testing standards, and punch a hole at one end. Suspend the sample to be tested through the plastic hook 66. Move the sliding baffle 7 upward to separate the arc-shaped baffle 73 from the outer surface of the hollow shaft 62. At this time, the hollow shaft 62 is in the unlocked state and can rotate freely. Then, manually pull the plastic cable 65 downward. The rotation of the plastic cable 65 drives the hollow shaft 62 to rotate. Since one end of the spiral spring 64 is fixed on the fixed shaft 63, the spiral spring 64 stores elastic potential energy during the rotation of the hollow shaft 62. When the bottom of the sample to be tested is at the marked position, stop pulling the plastic cable 65 downward. The sliding baffle 7 is slid downwards and rubs against the hollow shaft 62 to stop the hollow shaft 62 from rotating. At this time, the height of the sample to be tested is determined. Then, the sample to be tested is placed into the bottle body 1 and the outer cap 4 is tightened. When the test is over and the sample to be tested needs to be removed, the outer cap 4 is rotated to separate from the bottle body 1. Then, the inner cap 3 is taken out and the sample to be tested is removed from the bottle body 1. After the sample to be tested is removed from the plastic hook 66, the sliding baffle 7 is moved upwards to separate the arc-shaped baffle 73 from the outer surface of the hollow shaft 62. The hollow shaft 62 rotates in the opposite direction under the action of the spiral spring 64, so that the plastic cable 65 is rewound on the hollow shaft 62, thereby causing the plastic hook 66 to move upwards and reset.

[0031] ② For test samples that are difficult to drill, the sample size can be determined by setting them out to 40mm*100mm. Then, the required number of test samples can be placed on the support surface 21 of the plastic bracket 2 for testing.

[0032] ③ For particulate samples, the samples can be arranged in a size of 40mm*100mm to determine the specific quantity. Then, place the required number of samples in a gauze bag, mark them as in ①, and hang them in the reagent bottle for testing.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.

Claims

1. A formaldehyde testing reagent bottle for automotive interior parts, characterized in that, The device includes a bottle body (1), a plastic support (2) is provided in the inner cavity of the bottle body (1), an inner cap (3) and an outer cap (4) are provided at the bottle mouth of the bottle body (1), a small chamber (5) is provided on the side of the inner cap (3) opposite to the bottle body (1), a height adjustment structure (6) is provided in the small chamber (5) to allow the sample to be tested to move, and a sliding baffle (7) that cooperates with the height adjustment structure (6) is provided on the side wall of the small chamber (5).

2. The formaldehyde testing reagent bottle for automotive interior parts according to claim 1, characterized in that, The height adjustment structure (6) includes two bearings (61). The height adjustment structure (6) is fixed in the small chamber (5) by the two bearings (61). A hollow shaft (62) is provided on the inner ring of the two bearings (61). A fixed shaft (63) is provided in the center of the hollow shaft (62). The two ends of the fixed shaft (63) are fixedly connected to the side walls on both sides of the small chamber (5). The fixed shaft (63) is fixedly connected to one end of the hairspring (64). The other end of the hairspring (64) is connected to the inner wall of the hollow shaft (62). A plastic cable (65) is wound on the outer wall of the hollow shaft (62). One end of the plastic cable (65) passes through the outlet (51) and exits the small chamber (5) to connect with the plastic hook (66).

3. The formaldehyde testing reagent bottle for automotive interior parts according to claim 1, characterized in that, The sliding baffle (7) includes a sliding block (71), a connecting plate (72) and a baffle (73). The connecting plate (72) is vertically connected to the sliding block (71). The connecting plate (72) passes through the mounting port (52) on the side wall of the small chamber (5) and is connected to the baffle (73). The baffle (73) has knurling or texture on one side relative to the height adjustment structure (6).

4. A formaldehyde testing reagent bottle for automotive interior parts according to claim 1, characterized in that, The plastic support (2) includes a support surface (21) and support columns (22). The support surface (21) is mesh-like and has multiple ventilation holes. The bottom of the support surface (21) is provided with multiple downward-extending support columns (22). The plastic support (2) is placed in the inner cavity of the bottle body (1) through the multiple support columns (22).

Images