A micro-liquid pipette for cosmetic testing

Abstract

This utility model discloses a micro-liquid pipette for cosmetic testing, relating to the field of cosmetic testing technology. It includes a main housing and a disassembly / assembly assembly. The main housing is an integrated structure. The disassembly / assembly assembly is located on the lower side of the main housing and includes a fixing ring, a magnetic fixing layer, a silicone sealing gasket, an annular sealing groove, a connecting mounting cylinder, a magnetic fixing ring, a fixing support ring, a rubber sealing ring, and a micro-pipette. The fixing ring is located on the lower side of the main housing, and its upper surface is tightly connected to the lower surface of the main housing. This micro-liquid pipette for cosmetic testing allows for rapid disassembly and assembly of the micro-pipette through the disassembly / assembly assembly. It is stable, has strong sealing properties, and is not prone to leakage. The pipetting assembly enables micro-volume pipetting, and the inner surface and piston are not easily damaged during use, extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic testing technology, specifically a micro-liquid transfer device for cosmetic testing. Background Technology

[0002] Cosmetic testing refers to the use of physicochemical analysis, microbial culture, and other techniques to quantify the components, conduct toxicological assessments, and verify the efficacy of cosmetic raw materials and finished products. During cosmetic testing, to facilitate accurate transfer of trace samples, ensure the precision of component analysis, and avoid distortion of heavy metal or microbial test results due to sampling errors, a micro-liquid pipette for cosmetic testing is needed. However, current micro-liquid pipettes still have the following shortcomings:

[0003] For example, patent document CN212492986U discloses a continuous-dispensing micropipette. This continuous-dispensing micropipette has a simple structure, is easy to operate, has high precision, and low manufacturing and maintenance costs. It can achieve continuous dispensing function, allowing for repeated dispensing multiple times after a single aspiration, and ensures the accuracy of each dispensing volume, greatly saving sample dispensing time and avoiding the impact of sample dispensing time differences on the final experimental results. It is conducive to promotion and application. However, it is not convenient to quickly disassemble and replace the nozzle, and the sealing and stability of the nozzle installation are relatively poor. Utility Model Content

[0004] The purpose of this invention is to provide a micro-liquid transfer device for cosmetic testing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a micro-liquid pipette for cosmetic testing, comprising a main pipette housing and a disassembly assembly. The main pipette housing is an integrated structure. The disassembly assembly is disposed on the lower side of the main pipette housing and further comprises a fixing ring, a magnetic fixing layer, a silicone sealing gasket, an annular sealing groove, a connecting mounting cylinder, a magnetic fixing ring, a fixing support ring, a rubber sealing ring, and a micro-pipette. The fixing ring is disposed on the lower side of the main pipette housing, and the upper surface of the fixing ring is tightly connected to the lower surface of the main pipette housing. A magnetic fixing layer is provided at the upper end of the inner surface of the fixing ring, and a silicone sealing gasket is provided at the lower end of the inner surface of the fixing ring. An annular sealing groove is formed on the lower surface of the fixing ring.

[0006] Furthermore, a connecting mounting cylinder is engaged with the inner side of the fixing mounting ring, and a magnetic fixing ring is provided at the upper outer side of the connecting mounting cylinder.

[0007] Furthermore, the connecting mounting cylinder and the magnetic fixing ring are an integrated structure that is tightly connected, and a fixing support ring is provided at the lower end of the outer surface of the connecting mounting cylinder.

[0008] Furthermore, a rubber sealing ring is provided on the upper surface of the fixed support ring, and the rubber sealing ring is engaged with the inner side of the annular sealing groove.

[0009] Furthermore, a micro-volume suction tube is provided on the lower side of the connecting mounting cylinder, and the micro-volume suction tube and the connecting mounting cylinder are an integrated structure that is tightly connected.

[0010] Furthermore, the main housing of the pipette is provided with a pipetting assembly for assisting pipetting, and the pipetting assembly includes a fixed plate, an operating lever, a movable plate, a piston spring and a ceramic piston, with the fixed plate located at the lower end of the main housing of the pipette.

[0011] Furthermore, an operating rod is slidably connected to the inner surface of the fixed plate, and the upper end of the operating rod penetrates the upper side of the main housing of the transfer device and extends to the top of the main housing of the transfer device. A movable plate is installed on the upper surface of the operating rod, and the movable plate is slidably connected to the inner surface of the main housing of the transfer device. A piston spring is provided on the lower surface of the movable plate, and the lower side of the piston spring is connected to the upper surface of the fixed plate. A ceramic piston is installed at the bottom of the operating rod.

[0012] Furthermore, the pipetting assembly also includes a silicon carbide ceramic coating and an auxiliary hook, and the inner surface of the main housing of the pipette is provided with a silicon carbide ceramic coating, and an auxiliary hook is provided at the upper left end of the main housing of the pipette.

[0013] This invention provides a micro-liquid transfer device for cosmetic testing, which has the following advantages:

[0014] 1. This utility model incorporates a disassembly and assembly assembly, which includes a fixed mounting ring, a magnetic fixing layer, a silicone sealing gasket, an annular sealing groove, a connecting mounting cylinder, a magnetic fixing ring, a fixed support ring, a rubber sealing ring, and a micro-pipette. In use, the micro-pipette is installed on the lower side of the main housing of the transfer device by engaging with the inner side of the fixed mounting ring through the connecting mounting cylinder. The magnetic attraction between the magnetic fixing ring and the magnetic fixing layer reinforces the connection between the connecting mounting cylinder and the fixed mounting ring. The silicone sealing gasket improves the tightness of the connection between the connecting mounting cylinder and the fixed mounting ring. Simultaneously, the rubber sealing ring engages with the inner side of the annular sealing groove, improving both the sealing performance and stability of the installation. This allows for rapid disassembly and assembly of the micro-pipette, with stable installation, strong sealing, and minimal risk of leakage.

[0015] 2. This utility model features a pipetting assembly comprising a fixed plate, an operating lever, a movable plate, a piston spring, and a ceramic piston. The assembly also includes a silicon carbide ceramic coating and an auxiliary hook. In use, pressing down on the operating lever allows the index finger to be placed under the auxiliary hook for easier force application. The operating lever moves the ceramic piston downwards along the inner surface of the pipette's main housing, while the movable plate moves downwards along the same surface, compressing the piston spring. The micropipette is then placed on the cosmetic item to be tested. Releasing the operating lever causes the piston spring to spring back up, resetting the operating lever and moving the ceramic piston upwards to draw the cosmetic item into the micropipette. The ceramic piston exhibits excellent wear resistance and is not easily worn during operation. The silicon carbide ceramic coating on the inner surface of the pipette's main housing not only provides strong resistance to strong acids and alkalis but also enhances the wear resistance of the inner surface. This allows the device to perform micro-volume pipetting, and the inner surface and piston are less prone to damage during use, extending its service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a micro-liquid transfer device for cosmetic testing according to this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the disassembly and assembly components of a micro-liquid transfer device for cosmetic testing according to this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the pipetting assembly of a micro-liquid pipette for cosmetic testing according to this utility model.

[0019] In the diagram: 1. Main housing of the pipette; 2. Assembly / disassembly assembly; 201. Fixing ring; 202. Magnetic fixing layer; 203. Silicone sealing gasket; 204. Annular sealing groove; 205. Connecting mounting cylinder; 206. Magnetic fixing ring; 207. Fixing support ring; 208. Rubber sealing ring; 209. Micropipette; 3. Pipetting assembly; 301. Fixed plate; 302. Operating lever; 303. Moving plate; 304. Piston spring; 305. Ceramic piston; 306. Silicon carbide ceramic coating; 307. Auxiliary hook. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] like Figures 1 to 3As shown, a micro-liquid pipette for cosmetic testing includes a main pipette housing 1 and a disassembly / assembly assembly 2. The main pipette housing 1 is an integral structure. The disassembly / assembly assembly 2 is located on the lower side of the main pipette housing 1 and includes a fixing ring 201, a magnetic fixing layer 202, a silicone sealing gasket 203, an annular sealing groove 204, a connecting mounting cylinder 205, a magnetic fixing ring 206, a fixing support ring 207, a rubber sealing ring 208, and a micro-pipette 209. The fixing ring 201 is located on the lower side of the main pipette housing 1, and its upper surface is tightly connected to the lower surface of the main pipette housing 1. A magnetic fixing layer 202 is provided on the upper end of the inner surface of the fixing ring 201. A silicone sealing gasket 203 is provided at the lower end of the surface. An annular sealing groove 204 is opened on the lower surface of the fixing ring 201. A connecting mounting cylinder 205 is engaged with the inner side of the fixing ring 201. A magnetic fixing ring 206 is provided at the upper outer side of the connecting mounting cylinder 205. The connecting mounting cylinder 205 and the magnetic fixing ring 206 are a tightly connected integrated structure. A fixing support ring 207 is provided at the lower end of the outer surface of the connecting mounting cylinder 205. A rubber sealing ring 208 is provided on the upper surface of the fixing support ring 207. The rubber sealing ring 208 is engaged with the inner side of the annular sealing groove 204. A micro-pipette 209 is provided at the lower side of the connecting mounting cylinder 205. The micro-pipette 209 and the connecting mounting cylinder 205 are a tightly connected integrated structure.

[0022] The specific operation is as follows: During use, the micro-pipette 209 is installed on the lower side of the main housing 1 of the transfer device by engaging the connecting mounting cylinder 205 with the inner side of the fixing mounting ring 201. The connection between the connecting mounting cylinder 205 and the fixing mounting ring 201 is reinforced by the magnetic attraction between the magnetic fixing ring 206 and the magnetic fixing layer 202. The silicone sealing gasket 203 can improve the tightness of the connection between the connecting mounting cylinder 205 and the fixing mounting ring 201. At the same time, the rubber sealing ring 208 engages with the inner side of the annular sealing groove 204, which can improve the sealing of the installation and enhance the stability of the installation.

[0023] Please refer to Figure 1 and Figure 3The main housing 1 of the pipette is equipped with a pipetting assembly 3 for assisting pipetting. The pipetting assembly 3 includes a fixed plate 301, an operating rod 302, a movable plate 303, a piston spring 304, and a ceramic piston 305. The fixed plate 301 is located at the lower end of the main housing 1. The operating rod 302 is slidably connected to the inner surface of the fixed plate 301. The upper end of the operating rod 302 passes through the upper side of the main housing 1 and extends to the top of the main housing 1. The movable plate is mounted on the upper surface of the operating rod 302. 303, and the movable disk 303 is slidably connected to the inner surface of the main housing 1 of the pipette. A piston spring 304 is provided on the lower surface of the movable disk 303, and the lower side of the piston spring 304 is connected to the upper surface of the fixed disk 301. A ceramic piston 305 is installed at the bottom of the operating rod 302. The pipetting assembly 3 also includes a silicon carbide ceramic coating 306 and an auxiliary hook 307. The inner surface of the main housing 1 of the pipette is provided with a silicon carbide ceramic coating 306, and an auxiliary hook 307 is provided at the upper left side of the main housing 1 of the pipette.

[0024] The specific operation is as follows: When using, press down on the operating lever 302. When pressing the operating lever 302, the index finger can be placed under the auxiliary hook 307 for easy application of force. The operating lever 302 drives the ceramic piston 305 to move downward along the inner surface of the main housing 1 of the transfer device. At the same time, the movable plate 303 moves downward along the inner surface of the main housing 1 of the transfer device, causing the piston spring 304 to be compressed and contracted. Place the micro-pipette 209 on the cosmetic to be tested. Release the operating lever 302. At this time, the pressure on the piston spring 304 disappears and rebounds. The movable plate 303 drives the operating lever 302 to move upward and reset, causing the ceramic piston 305 to move upward and suck the cosmetic into the micro-pipette 209. The ceramic piston 305 has excellent wear resistance and is not easily worn during movement. The silicon carbide ceramic coating 306 on the inner surface of the main housing 1 of the transfer device not only has strong resistance to strong acid and alkali corrosion, but also improves the wear resistance of the inner surface of the main housing 1 of the transfer device.

[0025] In summary, as Figures 1 to 3As shown, this micro-liquid pipette for cosmetic testing is used as follows: First, the micro-pipette 209 is installed on the lower side of the main housing 1 of the pipette by engaging the connecting mounting cylinder 205 with the inner side of the fixing mounting ring 201. The magnetic attraction between the magnetic fixing ring 206 and the magnetic fixing layer 202 reinforces the connection between the connecting mounting cylinder 205 and the fixing mounting ring 201. The silicone sealing gasket 203 improves the tightness of the connection between the connecting mounting cylinder 205 and the fixing mounting ring 201. At the same time, the rubber sealing ring 208 engages with the inner side of the annular sealing groove 204, which improves the sealing performance and enhances the stability of the installation. Then, the operating lever 302 is pressed down. When pressing the operating lever 302, the index finger can be placed under the auxiliary hook 307 for easy application of force. The operating lever 302 drives the ceramic piston 305 to move downward along the inner surface of the main housing 1 of the pipette. At the same time, the movable disk 303 moves downward along the inner surface of the main housing 1 of the pipette, causing the piston spring 304 to be compressed and contracted. The micro-pipette 209 is placed on the cosmetic to be tested. The operating lever 302 is released. At this time, the pressure on the piston spring 304 disappears and it rebounds. The movable disk 303 drives the operating lever 302 to move upward and reset, causing the ceramic piston 305 to move upward and suck the cosmetic into the micro-pipette 209. The ceramic piston 305 has excellent wear resistance and is not easily worn during movement. The silicon carbide ceramic coating 306 on the inner surface of the main housing 1 of the pipette not only has strong resistance to strong acid and alkali corrosion, but also improves the wear resistance of the inner surface of the main housing 1 of the pipette.

[0026] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A micro-liquid pipette for cosmetic testing, comprising a main housing (1) and a disassembly / assembly assembly (2), characterized in that: The main housing (1) of the pipette is an integrated structure. The disassembly and assembly assembly (2) is located on the lower side of the main housing (1) of the pipette. The disassembly and assembly assembly (2) also includes a fixed mounting ring (201), a magnetic fixing layer (202), a silicone sealing gasket (203), an annular sealing groove (204), a connecting mounting cylinder (205), a magnetic fixing ring (206), a fixed support ring (207), a rubber sealing ring (208), and a micro-pipette (209). The fixed mounting ring (201) is located on the lower side of the main housing (1) of the pipette. The upper surface of the fixed mounting ring (201) is tightly connected to the lower surface of the main housing (1) of the pipette. The upper end of the inner surface of the fixed mounting ring (201) is provided with a magnetic fixing layer (202), and the lower end of the inner surface of the fixed mounting ring (201) is provided with a silicone sealing gasket (203). The lower surface of the fixed mounting ring (201) is provided with an annular sealing groove (204).

2. The micro-liquid pipette for cosmetic testing according to claim 1, characterized in that, The inner side of the fixed mounting ring (201) is engaged with the connecting mounting cylinder (205), and the upper outer side of the connecting mounting cylinder (205) is provided with a magnetic fixing ring (206).

3. The micro-liquid pipette for cosmetic testing according to claim 1, characterized in that, The connecting mounting cylinder (205) and the magnetic fixing ring (206) are an integrated structure that is tightly connected, and a fixing support ring (207) is provided at the lower end of the outer surface of the connecting mounting cylinder (205).

4. The micro-liquid pipette for cosmetic testing according to claim 1, characterized in that, The upper surface of the fixed support ring (207) is provided with a rubber sealing ring (208), and the rubber sealing ring (208) is engaged with the inner side of the annular sealing groove (204).

5. A micro-liquid pipette for cosmetic testing according to claim 1, characterized in that, A micro-pipette (209) is provided on the lower side of the connecting mounting cylinder (205), and the micro-pipette (209) and the connecting mounting cylinder (205) are an integrated structure that is tightly connected.

6. A micro-liquid pipette for cosmetic testing according to claim 1, characterized in that, The main housing (1) of the pipette is provided with a pipetting assembly (3) for assisting pipetting. The pipetting assembly (3) includes a fixed plate (301), an operating rod (302), a movable plate (303), a piston spring (304), and a ceramic piston (305). The fixed plate (301) is located at the lower end of the main housing (1) of the pipette.

7. A micro-liquid pipette for cosmetic testing according to claim 6, characterized in that, An operating rod (302) is slidably connected to the inner surface of the fixed plate (301), and the upper end of the operating rod (302) penetrates the upper side of the main housing (1) of the transfer device and extends to the top of the main housing (1) of the transfer device. A movable plate (303) is installed on the upper surface of the operating rod (302), and the movable plate (303) is slidably connected to the inner surface of the main housing (1) of the transfer device. A piston spring (304) is provided on the lower surface of the movable plate (303), and the lower side of the piston spring (304) is connected to the upper surface of the fixed plate (301). A ceramic piston (305) is installed at the bottom of the operating rod (302).

8. A micro-liquid pipette for cosmetic testing according to claim 6, characterized in that, The pipetting assembly (3) also includes a silicon carbide ceramic coating (306) and an auxiliary hook (307), and the inner surface of the main housing (1) of the pipette is provided with a silicon carbide ceramic coating (306), and the upper left side of the main housing (1) of the pipette is provided with an auxiliary hook (307).

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