A sampling device for detecting heavy metal ions in cosmetics

Abstract

The utility model discloses a sampling device for heavy metal ion detection of cosmetic, include: extraction device, the outer wall of extraction device is connected with feed structure, extraction device includes the liquid extraction pipe, the inner wall slide connection of liquid extraction pipe top has the pressure rod, the utility model relates to sampling device technical field, this extraction device and feed structure cooperate through the positioning groove and the positioning block, can lock the pressure rod position in the sampling process, and the stroke of extrusion plate is accurately controlled, realizes quantitative sampling, avoids the sampling amount error of traditional manual sampling because of the difference of strength and operation, through the liquid extraction hole on the liquid extraction head, along the axial annular array distribution, when actually sampling, if one place liquid extraction hole is blocked by the particle or viscous substance in the cosmetic, other liquid extraction holes can still work normally, maintain the continuity of sample extraction.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, specifically a sampling device for detecting heavy metal ions in cosmetics. Background Technology

[0002] With increasing public concern about the safety of cosmetics, the detection of heavy metal ion content has become a key aspect of cosmetic quality control. Accurate detection results depend on scientific and standardized sampling procedures. However, existing cosmetic heavy metal ion detection and sampling devices still have many problems that need to be solved.

[0003] Currently, most manual sampling devices on the market use simple suction or scooping methods. During the sampling process, due to the lack of a precise quantitative control structure, it is difficult for operators to accurately control the sampling volume. Differences in force and different operating habits can lead to large fluctuations in the sampling volume each time, which in turn affects the accuracy and repeatability of the test results. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a sampling device for detecting heavy metal ions in cosmetics, which solves the problem of traditional manual sampling devices having difficulty in accurately controlling the sampling amount.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A sampling device for detecting heavy metal ions in cosmetics includes: an extraction device with a feeding structure threadedly connected to its outer wall; the extraction device includes a liquid extraction tube, a pressure rod slidably connected to the inner wall of the top of the liquid extraction tube, a pressing plate fixedly connected to the outer wall of the top of the pressure rod, a squeezing plate fixedly connected to the outer wall of the bottom of the pressure rod, a sealing ring fixedly connected to the outer wall of the squeezing plate, a tension spring fixedly connected to the outer wall of the top of the squeezing plate, a positioning groove formed on the outer wall of the pressure rod, and a connecting cylinder fixedly connected to the outer wall of the bottom of the liquid extraction tube.

[0009] Preferably, the outer wall of the sealing ring is slidably connected to the inner wall of the extraction tube, the outer wall of the tension spring on the side away from the extrusion plate is fixedly connected to the inner wall of the top of the extraction tube, and the positioning groove is arranged vertically along the outer wall of the pressure rod. When the pressing plate is pressed, the pressure rod and the extrusion plate move downward in the extraction tube, and the tension spring is stretched. When the pressing plate is released, the extrusion plate slowly rises under the rebound force of the tension spring.

[0010] Preferably, a groove is formed on the outer wall of the top of the suction tube, a slide rod is fixedly connected to the inner wall of the groove, a pull plate is slidably connected to the outer wall of the slide rod, a positioning block is fixedly connected to the outer wall of the pull plate, and a compression spring is fixedly connected to the outer wall of the pull plate on the side away from the positioning block.

[0011] Preferably, the outer wall of the compression spring away from the pull plate is fixedly connected to the inner wall of the slide groove, and the outer wall of the positioning block is slidably connected to the inner wall of the positioning groove. During the downward movement of the pressure rod, it contacts the positioning block. Since the outer wall of the positioning block is inclined and the top of the positioning groove on the pressure rod is also inclined, the positioning block is squeezed, pushing the pull plate to slide outward along the slide groove through the slide rod. At the same time, the compression spring is compressed by force. When the pressure rod continues to move downward until the next positioning groove is aligned with the positioning block, the compression spring rebounds and pushes the positioning block to be inserted into the positioning groove of the corresponding height.

[0012] Preferably, the feeding structure includes a needle tube, a connecting sleeve is fixedly connected to the outer wall of the top of the needle tube, a sealing gasket is fixedly connected to the inner wall of the connecting sleeve, a liquid extraction head is fixedly connected to the outer wall of the bottom of the needle tube, and a liquid extraction hole is opened on the outer wall of the liquid extraction head.

[0013] Preferably, the extraction holes are arranged in a ring around the central point of the extraction head. The inner wall of the connecting sleeve is threaded to the outer wall of the connecting cylinder. The outer wall of the top of the sealing gasket is in contact with the outer wall of the bottom of the connecting cylinder. The connecting sleeve of the feeding structure and the connecting cylinder of the extraction device are screwed together. The sealing gasket ensures that there is no leakage at the connection, forming a closed fluid channel.

[0014] (III) Beneficial Effects

[0015] This invention provides a sampling device for detecting heavy metal ions in cosmetics. It has the following beneficial effects:

[0016] (i) The extraction device, through the cooperation of the positioning groove and the positioning block, can lock the position of the pressure rod during the sampling process, accurately control the stroke of the extrusion plate, realize quantitative sampling, avoid the sampling error caused by the difference in force and operation in traditional manual sampling, and ensure that the sampling volume is controllable each time.

[0017] (ii) The feeding structure, through the liquid extraction holes on the liquid extraction head, is distributed in a ring array along the axis. In actual sampling, if one liquid extraction hole is blocked by particles or viscous substances in the cosmetic, the other liquid extraction holes can still work normally, maintaining the continuity of sample extraction, avoiding interruption of the sampling process due to blockage, greatly improving sampling efficiency, and reducing the time and effort cost for operators to clean blockages. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the extraction device of this utility model;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A;

[0022] Figure 5 This is a schematic diagram of the feeding structure of this utility model.

[0023] In the diagram: 1. Extraction device; 11. Extraction tube; 12. Pressure rod; 13. Press plate; 14. Extrusion plate; 15. Sealing ring; 16. Tension spring; 17. Positioning groove; 18. Connecting cylinder; 19. Slide groove; 191. Slide rod; 192. Pull plate; 193. Positioning block; 194. Compression spring; 2. Feeding structure; 21. Needle tube; 22. Connecting sleeve; 23. Sealing gasket; 24. Extraction head; 25. Extraction hole; Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution: a sampling device for detecting heavy metal ions in cosmetics, comprising: an extraction device 1, with a feeding structure 2 threadedly connected to the outer wall of the extraction device 1; the extraction device 1 includes an extraction tube 11, a pressure rod 12 slidably connected to the inner wall of the top of the extraction tube 11, a pressing plate 13 fixedly connected to the outer wall of the top of the pressure rod 12, a squeezing plate 14 fixedly connected to the outer wall of the bottom of the pressure rod 12, a sealing ring 15 fixedly connected to the outer wall of the squeezing plate 14, a tension spring 16 fixedly connected to the outer wall of the top of the squeezing plate 14, a positioning groove 17 opened on the outer wall of the pressure rod 12, and a connecting cylinder 18 fixedly connected to the outer wall of the bottom of the extraction tube 11.

[0026] The outer wall of the sealing ring 15 is slidably connected to the inner wall of the suction tube 11. The outer wall of the tension spring 16 away from the squeezing plate 14 is fixedly connected to the inner wall of the top of the suction tube 11. The positioning groove 17 is arranged vertically along the outer wall of the pressure rod 12. When the pressing plate 13 is pressed, the pressure rod 12 and the squeezing plate 14 move down in the suction tube 11. At this time, the tension spring 16 is stretched. When the pressing plate 13 is released, the squeezing plate 14 slowly rises under the action of the rebound force of the tension spring 16.

[0027] A groove 19 is provided on the outer wall of the top of the liquid extraction tube 11. A slide rod 191 is fixedly connected to the inner wall of the groove 19. A pull plate 192 is slidably connected to the outer wall of the slide rod 191. A positioning block 193 is fixedly connected to the outer wall of the pull plate 192. A compression spring 194 is fixedly connected to the outer wall of the pull plate 192 on the side away from the positioning block 193.

[0028] The outer wall of the compression spring 194 away from the pull plate 192 is fixedly connected to the inner wall of the slide groove 19. The outer wall of the positioning block 193 is slidably connected to the inner wall of the positioning groove 17. During the downward movement of the pressure rod 12, it contacts the positioning block 193. Since the outer wall of the positioning block 193 is inclined and the top of the positioning groove 17 on the pressure rod 12 is also inclined, the positioning block 193 is squeezed, pushing the pull plate 192 to slide outward along the slide groove 19 through the slide rod 191. At the same time, the compression spring 194 is compressed by force. When the pressure rod 12 continues to move downward to the next positioning groove 17 and aligns with the positioning block 193, the compression spring 194 rebounds and pushes the positioning block 193 into the positioning groove 17 of the corresponding height.

[0029] The feeding structure 2 includes a needle tube 21, a connecting sleeve 22 is fixedly connected to the outer wall of the top of the needle tube 21, a sealing gasket 23 is fixedly connected to the inner wall of the connecting sleeve 22, and a liquid extraction head 24 is fixedly connected to the outer wall of the bottom of the needle tube 21. The outer wall of the liquid extraction head 24 has a liquid extraction hole 25.

[0030] The extraction holes 25 are arranged in a ring around the central point of the extraction head 24. The inner wall of the connecting sleeve 22 is threaded to the outer wall of the connecting cylinder 18. The outer wall of the top of the sealing gasket 23 contacts the outer wall of the bottom of the connecting cylinder 18. The connecting sleeve 22 of the feeding structure 2 and the connecting cylinder 18 of the extraction device 1 are screwed together. The sealing gasket 23 ensures that there is no leakage at the connection, forming a closed fluid channel.

[0031] In use, the connecting sleeve 22 of the feeding structure 2 and the connecting cylinder 18 of the extraction device 1 are screwed together. The sealing gasket 23 ensures that there is no leakage at the connection and forms a closed fluid channel. By operating the extraction device 1, the feeding structure 2 can perform liquid extraction. The feeding structure 2 has an anti-clogging function, and the extraction device 1 can perform quantitative sampling.

[0032] First, after the connecting sleeve 22 is screwed tightly onto the connecting cylinder 18, press the pressing plate 13 to drive the pressure rod 12 and the squeezing plate 14 to move down inside the liquid extraction tube 11. The tension spring 16 is stretched. During the downward movement of the pressure rod 12, it contacts the positioning block 193. Since the outer wall of the positioning block 193 is inclined and the top of the positioning groove 17 on the pressure rod 12 is also inclined, the positioning block 193 is squeezed, pushing the pull plate 192 to slide outward along the slide groove 19 through the slide rod 191. At the same time, the compression spring 194 is compressed. When the pressure rod 12 continues to move down to the next positioning groove 17 and aligns with the positioning block 193, the compression spring 194 rebounds and pushes the positioning block 193 into the positioning groove 17 of the corresponding height. When it is pressed down to the bottom, the positioning block 193 is locked into the positioning groove 17 of the corresponding height, locking the position of the pressure rod 12.

[0033] Next, the extraction head 24 is immersed in the cosmetic sample. The pull plate 192 is pulled manually, the compression spring 194 is compressed, the positioning block 193 is disengaged from the positioning groove 17, and the locking of the pressure rod 12 is released. The squeezing plate 14 rises slowly under the action of the elastic force of the tension spring 16. Due to the sliding seal between the sealing ring 15 and the inner wall of the extraction tube 11, a negative pressure is formed in the extraction tube 11. The sample around the extraction head 24 enters the needle tube 21 through the extraction hole 25 under the action of the air pressure difference, and flows into the extraction tube 11 along the channel. Since the extraction hole 25 is arrayed along the axis of the extraction head 24, it can be ensured that if one position is blocked, the other position can continue to be extracted.

[0034] As the sample flows into the extraction tube 11, the pressure rod 12 also rises slowly. When the appropriate dose is extracted, the pull plate 192 is released, and the compression spring 194 rebounds to push the positioning block 193 into the positioning groove 17 at the corresponding height, locking the position of the pressure rod 12. This controls the stroke of the squeezing plate 14, enabling quantitative sampling. After sampling is completed, the feeding structure 2 is unscrewed, and the extraction device 1 is connected to the subsequent testing equipment. The sample is then pushed out for analysis by pressing the push plate 13.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for detecting cosmetic heavy metal ions, characterized by, include: Extraction device (1), the outer wall of the extraction device (1) is threadedly connected to a feeding structure (2); The extraction device (1) includes a liquid extraction tube (11), a pressure rod (12) is slidably connected to the inner wall of the top of the liquid extraction tube (11), a pressing plate (13) is fixedly connected to the outer wall of the top of the pressure rod (12), a squeezing plate (14) is fixedly connected to the outer wall of the bottom of the pressure rod (12), a sealing ring (15) is fixedly connected to the outer wall of the squeezing plate (14), a tension spring (16) is fixedly connected to the outer wall of the top of the squeezing plate (14), a positioning groove (17) is opened on the outer wall of the pressure rod (12), and a connecting cylinder (18) is fixedly connected to the outer wall of the bottom of the liquid extraction tube (11).

2. The sampling device for detecting heavy metal ions in cosmetics according to claim 1, characterized in that: The outer wall of the sealing ring (15) is slidably connected to the inner wall of the liquid extraction tube (11), the outer wall of the tension spring (16) away from the squeezing plate (14) is fixedly connected to the inner wall of the top of the liquid extraction tube (11), and the positioning groove (17) is arranged vertically along the outer wall of the pressure rod (12).

3. The sampling device for detecting heavy metal ions in cosmetics according to claim 1, characterized in that: The outer wall of the top of the liquid extraction tube (11) is provided with a sliding groove (19). A sliding rod (191) is fixedly connected to the inner wall of the sliding groove (19). A pull plate (192) is slidably connected to the outer wall of the sliding rod (191). A positioning block (193) is fixedly connected to the outer wall of the pull plate (192). A compression spring (194) is fixedly connected to the outer wall of the pull plate (192) on the side away from the positioning block (193).

4. The sampling device for detecting heavy metal ions in cosmetics according to claim 3, characterized in that: The outer wall of the compression spring (194) away from the pull plate (192) is fixedly connected to the inner wall of the slide groove (19), and the outer wall of the positioning block (193) is slidably connected to the inner wall of the positioning groove (17).

5. A sampling device for detecting heavy metal ions in cosmetics according to claim 1, characterized in that: The feeding structure (2) includes a needle tube (21), a connecting sleeve (22) is fixedly connected to the outer wall of the top of the needle tube (21), a sealing gasket (23) is fixedly connected to the inner wall of the connecting sleeve (22), a liquid extraction head (24) is fixedly connected to the outer wall of the bottom of the needle tube (21), and a liquid extraction hole (25) is opened on the outer wall of the liquid extraction head (24).

6. The sampling device for detecting heavy metal ions in cosmetics according to claim 5, characterized in that: The extraction holes (25) are arranged in a ring around the center point of the extraction head (24). The inner wall of the connecting sleeve (22) is threadedly connected to the outer wall of the connecting cylinder (18). The outer wall of the top of the sealing gasket (23) is in contact with the outer wall of the bottom of the connecting cylinder (18).

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