Method for using a manual dispensing device for inspecting foam cosmetics

Abstract

A method for using a manual dispensing device for inspecting foam cosmetics, characterized in that the manual dispensing device for inspecting foam cosmetics used comprises a sampling unit, a sample storage unit and a sample dispensing unit; the sampling unit comprises a sampling rod, the outer side of the rod is a brush structure, a first circular card plate and a scraping ring are arranged on the top and upper part, and a rectangular card plate is arranged on the bottom. The sample storage unit is a sample storage cylinder, a sample storage cavity is arranged inside, a first annular limit card plate and a second annular limit card plate are arranged on the top and bottom, and a sample dispensing tube is arranged in the center. The sample dispensing unit comprises a sample dispensing rod, a second circular card plate is arranged on the top, and a sealing rubber ring is arranged on the bottom and the outer side wall. When in use, the sample is stirred first, and the sampling rod brush is attached to the sample and then inserted into the sample storage unit, and the scraping ring scrapes the sample on the brush to the sample storage cavity. Then the sample dispensing unit is inserted into the sample storage unit, and the sample dispensing speed and amount are controlled by pushing down the second circular card plate. The whole device has a simple structure and is easy to operate, and can effectively take and discharge foam cosmetic samples.

Description

Technical Field

[0001] The invention relates to the field of cosmetics inspection, and in particular to a method for using a manual ejector for inspecting foam cosmetics. Background Art

[0002] Cosmetics refer to chemical industrial products or fine chemical products that are spread on any part of the human body surface, such as skin, hair, nails, lips and teeth, by smearing, spraying or other similar methods, in order to achieve the purpose of cleaning, maintenance, beautification, modification and change of appearance, or correction of human body odor and maintaining good condition. They are closely related to people's lives, and it is necessary to strengthen the product quality supervision of commercially available cosmetics and conduct accurate testing of their product indicators. Among them, foam cosmetics, such as shaving foam, shaving foam, etc., their samples are mostly located in pressure packaging bottles, and it is impossible to directly open the bottle for sampling and testing. According to the instructions for use marked in the product instructions, the foam will instantly and quickly gush out through the nozzle. This process is extremely fast, and it takes about 1-2 seconds to form a large glob at the nozzle. While this sampling method is convenient for consumers to use, it brings great troubles to inspectors: the sample is sampled too quickly and the sample volume is large, and it cannot be directly discharged into a volumetric flask or other weighing bottle with a fixed volume. In addition, when sampling is directly discharged in this way, the instantaneous sample volume is uncontrollable, and it is easy to oversample and need to be resampled. Sampling and weighing, this process cannot guarantee the uniformity of sampling; for example, the foam sample is first sprayed into a wide-mouth container such as a beaker, and then traditional sampling methods are used, such as a straw, a pipette, a medicine spoon, etc., because the sample is in a foamy state at this time, the foam micropores are filled with gas, the weight is light, the foam has high viscosity, and the fluidity is poor. A large amount of air is easily sucked in during the absorption process, and only a small amount of foam sample enters the sampler. The one-time sampling amount is small. The sample discharge process is very difficult because the foam sample is very easy to stick to the inner wall of the sampler and is light in weight, so it is difficult to discharge it by air pressure or airflow, or by gravity. The entire sampling and discharge process is very difficult. Summary of the invention

[0003] The object of the present invention is to provide a method for using a manual ejector for inspecting foam cosmetics, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above technical objectives, the present invention provides the following technical solutions: a method for using a manual dispensing device for inspecting foam cosmetics, wherein the manual dispensing device for inspecting foam cosmetics comprises a sampling unit, a sample storage unit and a sample dispensing unit. The sampling unit is provided with a sampling rod, the outer wall of the sampling rod is a brush-like structure, a first circular clamping plate is provided on the top of the sampling rod, a scraping ring is provided on the outer side of the upper part of the sampling rod, and a rectangular clamping plate is provided on the bottom of the sampling rod. The sample storage unit is provided with a sample storage cylinder, a sample storage cavity is provided inside the sample storage cylinder, a first annular limiting clamping plate is provided on the outer side of the top of the sample storage cylinder, a second annular limiting clamping plate is provided on the inner side of the bottom of the sample storage cylinder, and a sample dispensing tube is provided at the center of the second annular limiting clamping plate. The sample dispensing unit is provided with a sample dispensing rod, a second circular clamping plate is provided on the top of the sample dispensing rod, and a sealing rubber ring is provided on the bottom and the outer wall of the bottom of the sample dispensing rod.

[0005] The brush on the outer wall of the sampling rod is perpendicular to the sampling rod, and the length of the brush on the outer wall of the sampling rod should be compatible with the inner diameter of the sample storage tube.

[0006] The length of the sampling rod is matched with the height of the sample storage tube, so that when the sampling unit is inserted into the sample storage unit, the brush part of the sampling rod can fill the sample storage cavity.

[0007] The diameter of the sealing rubber ring should be matched with the diameter of the sample storage tube, so that when the sample row unit is inserted into the sample storage unit, the outer wall of the sealing rubber ring is sealed and connected with the inner wall of the sample storage tube.

[0008] The scraper ring is ring-shaped, and the inner ring diameter of the scraper ring is matched with the diameter of the non-brush part of the sampling rod, so that when the scraper ring is lowered from above the sampling rod to below the sampling rod, the foam sample attached to the brush of the sampling rod can be fully separated from the brush under the scraping force of the scraper ring, and the outer ring diameter of the scraper ring is matched with the inner diameter of the sample storage tube.

[0009] The length of the rectangular clamping plate is greater than the diameter of the non-brush part of the sampling rod and smaller than the inner diameter of the sample storage tube.

[0010] The sample storage tube is in the shape of a cylinder with a hollow interior and openings at both ends.

[0011] The sample row tube is hollow inside and open at both ends, and the sample row tube is communicated with the sample storage cavity.

[0012] The method of use comprises the following steps: firstly spraying the foam sample into the beaker, holding the first circular card plate and inserting the sampling unit into the beaker filled with the sample for stirring to fully mix the sample in the beaker, holding the first circular card plate and lifting the sampling unit, at which time the brush part of the sampling rod is attached to the foam sample, inserting the brush part of the sampling rod into the sample storage unit until the scraping ring is flush with the first annular limiting card plate, and the sample enters the sample storage cavity with the brush of the sampling rod, fixing the scraping ring and the first annular limiting card plate together with the left hand, and lifting the first circular card plate with the right hand. In this process, the sample on the brush of the sampling rod is removed by the scraping force of the scraping ring. The brush remains in the sample storage cavity, the sampling rod and the brush pass through the center of the scraper ring and reach above the scraper ring. When the rectangular card plate reaches the bottom of the scraper ring, the sampling unit is separated from the sample storage unit, and the sample remains in the sample storage cavity. The sample discharge unit is inserted into the sample storage cavity of the sample storage unit by holding the second circular card plate, and the sample discharge tube is placed above the weighing bottle. The index finger and middle finger lift the first annular limiting card plate, and the thumb slowly pushes down the second circular card plate, so that the sealing rubber ring pushes the sample in the sample storage cavity through the sample discharge tube into the weighing bottle, and the sample discharge speed and sample discharge amount are controlled by the pushing down speed of the second circular card plate.

[0013] More preferably, the scraper ring can be a ring with a hollow interior and a rectangular opening in the diameter direction of the bottom. The rectangular clamping plate can enter the hollow position inside the scraper ring through the rectangular opening at the bottom of the scraper ring. When the scraper ring rotates along the outer wall of the sampling rod under the action of external force, the length direction of the rectangular clamping plate is perpendicular to the length direction of the rectangular opening at the bottom of the scraper ring. At this time, the rectangular clamping plate is embedded in the scraper ring.

[0014] The method of use includes the following steps: the sampling rod and the brush pass through the center of the scraper ring to reach the top of the scraper ring, and when the rectangular card plate reaches the rectangular opening at the bottom of the scraper ring, continue to lift the circular card plate to make the rectangular card plate pass through the rectangular opening at the bottom of the scraper ring to reach the inside of the scraper ring, fix the scraper ring with the left hand, and pinch the first circular card plate with the right hand to rotate it 90° clockwise, at this time, the length direction of the rectangular card plate is perpendicular to the length direction of the rectangular opening at the bottom of the scraper ring, and the sample taken remains in the sample storage cavity.

[0015] The beneficial effects of the present invention are:

[0016] 1. Make full use of the characteristics of foam samples, which are high viscosity and poor fluidity, and fully increase the adhesion area of ​​the sample through the brush design on the outer wall of the sampling rod. When the sampling rod is stirred in the sample to be sampled, the sample can be quickly adsorbed on the outer periphery of the sampling rod, thereby speeding up the sampling speed.

[0017] 2. The brush design on the outer wall of the sampling rod is conducive to fully mixing the sample to be sampled during stirring, and the sample adhering to the brush on the outer wall of the sampling rod is constantly replaced during the stirring process, fully ensuring the uniformity of sampling.

[0018] 3. The scraper ring can make the sample on the outer wall brush of the sampling rod quickly and fully enter the sample storage cavity, so that the sample storage cavity is quickly filled with samples. Compared with the straw, pipette and other methods introduced in the background technology, the one-time sampling volume is large, effectively avoiding the inhalation of a large amount of air during the sampling process, and saving operation time.

[0019] 4. The sealing rubber ring design of the sample discharge unit effectively avoids the problem that a large amount of foamy samples stick to the inner wall of the sampler and are difficult to be discharged naturally by airflow and gravity. The sample discharge process is completed by pushing down the sealing rubber ring, and the sample discharge efficiency is high.

[0020] 5. The pushing speed of the sealing rubber ring of the sample arrangement unit can be controlled manually within a certain range, which effectively solves the problem of uncontrollable instantaneous sample volume when spraying directly from the pressure packaging bottle into the weighing bottle, and the problem of over-sampling and need for re-sampling and weighing, which increases the success rate of sampling and sample arrangement and reduces the possibility of repeated operations.

[0021] 6. The sampling and sample arrangement completed by the combination of the three units of the whole device is simple and time-saving, which enhances the sampling and sample arrangement efficiency and improves the uniformity of the sample, which is very beneficial to the inspection of the finished foam cosmetics.

[0022] 7. When the scraper ring is designed as a ring structure with a hollow interior and a rectangular opening in the bottom diameter direction that matches the rectangular clamping plate, the sampling unit can replace the sample arrangement unit to perform the sample arrangement function after completing the sampling operation, thereby saving the number of units of the entire device, making the device setting more concise, and easier to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 This is a schematic diagram of sample storage according to the present invention.

[0025] Figure 3 It is a schematic diagram of the sample arrangement of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of a sampling unit 1 according to a more preferred embodiment of the present invention.

[0027] In the figure, the list of components represented by each reference numeral is as follows: sampling unit 1, sampling rod 1-1, first circular clamping plate 1-2, scraper ring 1-3, rectangular clamping plate 1-4, rectangular opening 1-5, sample storage unit 2, sample storage tube 2-1, sample storage cavity 2-2, first annular limiting clamping plate 2-3, second annular limiting clamping plate 2-4, sample row tube 2-5, sample row unit 3, sample row rod 3-1, second circular clamping plate 3-2, sealing rubber ring 3-3. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is described in detail below in conjunction with specific implementation methods and drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention. Example

[0029] like Figure 1 As shown, a manual sampling and discharging device for inspecting foam cosmetics used in the present invention comprises a sampling unit 1, a sample storage unit 2 and a sample discharging unit 3. The sampling unit 1 is provided with a sampling rod 1-1, the outer wall of the sampling rod 1-1 is a brush-like structure, a first circular clamping plate 1-2 is provided on the top of the sampling rod 1-1, a scraping ring 1-3 is provided on the outer side of the upper part of the sampling rod 1-1, and a rectangular clamping plate 1-4 is provided on the bottom of the sampling rod 1-1. The sample storage unit 2 is provided with a sample storage cylinder 2-1, a sample storage cavity 2-2 is provided inside the sample storage cylinder 2-1, a first annular limiting clamping plate 2-3 is provided on the outer side of the top of the sample storage cylinder 2-1, a second annular limiting clamping plate 2-4 is provided on the inner side of the bottom of the sample storage cylinder 2-1, and a sample discharging tube 2-5 is provided at the center of the second annular limiting clamping plate 2-4. The sample arrangement unit 3 is provided with a sample arrangement rod 3-1, a second circular clamping plate 3-2 is provided on the top of the sample arrangement rod 3-1, and a sealing rubber ring 3-3 is provided on the bottom and the outer side wall of the bottom of the sample arrangement rod 3-1.

[0030] The brush on the outer wall of the sampling rod 1-1 is perpendicular to the sampling rod 1-1, and the length of the brush on the outer wall of the sampling rod 1-1 should be compatible with the inner diameter of the sample storage tube 2-1. The length of the sampling rod 1-1 is compatible with the height of the sample storage tube 2-1, so that when the sampling unit 1 is inserted into the sample storage unit 2, the brush part of the sampling rod 1-1 can fill the sample storage cavity 2-2. The diameter of the sealing rubber ring 3-3 is compatible with the diameter of the sample storage tube 2-1, so that when the sample arrangement unit 3 is inserted into the sample storage unit 2, the outer wall of the sealing rubber ring 3-3 is sealed and connected with the inner wall of the sample storage tube 2-1. The scraper ring 1-3 is annular, and the inner ring diameter of the scraper ring 1-3 is matched with the diameter of the non-brush part of the sampling rod 1-1, so that when the scraper ring 1-3 is lowered from the top of the sampling rod 1-1 to the bottom of the sampling rod 1-1, the foam sample attached to the brush of the sampling rod 1-1 can be fully separated from the brush under the scraping force of the scraper ring 1-3. The outer ring diameter of the scraper ring 1-3 is matched with the inner diameter of the sample storage tube 2-1. The length of the rectangular card plate 1-4 is greater than the diameter of the non-brush part of the sampling rod 1-1 and less than the inner diameter of the sample storage tube 2-1. The sample storage tube 2-1 is a cylindrical shape with a hollow interior and openings at both ends. The sample arrangement tube 2-5 is hollow interior and openings at both ends, and the sample arrangement tube 2-5 is connected to the sample storage chamber 2-2.

[0031] When the present invention is used, a sufficient amount of foam sample is first sprayed into the beaker, and the circular card plate 1-2 is held by hand to insert the sampling unit 1 into the beaker filled with the sample for stirring, so that the sample in the beaker is fully mixed to ensure the uniformity of sampling, and the first circular card plate 1-2 is held by hand to lift the sampling unit 1. At this time, the brush part of the sampling rod 1-1 is fully attached to the foam sample, and the brush part of the sampling rod 1-1 is inserted into the sample storage unit 2 until the scraping ring 1-3 is flush with the first annular limiting card plate 2-3, and the sample enters the sample storage cavity 2-2 with the brush of the sampling rod 1-1. The scraping ring 1-3 and the first annular limiting card plate 2-3 are fixed together with the left hand, and the first circular card plate 1-2 is lifted up with the right hand. In this process, the sample on the brush of the sampling rod 1-1 is separated from the brush by the scraping force of the scraping ring 1-3 and remains in the sample storage cavity 2-2, and the sampling rod 1-1 The brush passes through the center of the scraper ring 1-3 and reaches the top of the scraper ring 1-3. When the rectangular card plate 1-4 reaches the bottom of the scraper ring 1-3, the sampling unit 1 is separated from the sample storage unit 2, and the sample taken remains in the sample storage cavity 2-2. The second circular card plate 3-2 is held by hand to insert the sample discharge unit 3 into the sample storage cavity 2-2 of the sample storage unit 2, and the sample discharge tube 2-5 is placed above the weighing bottle. The index finger and middle finger lift the first annular limit card plate 2-3, and the thumb slowly pushes down the second circular card plate 3-2, so that the sealing rubber ring 3-3 pushes the sample in the sample storage cavity 2-2 into the weighing bottle through the sample discharge tube 2-5. The sample discharge speed and sample discharge volume can be appropriately controlled by the downward pushing speed of the second circular card plate 3-2. Sample discharge tubes 2-5 with different inner diameters can also be designed according to the required precision requirements of the weighing volume, so as to more accurately control the sample discharge speed and sample discharge volume. Example

[0032] The scraper ring 1-3 can be a ring-shaped one with a hollow interior and a rectangular opening 1-5 in the diameter direction of the bottom. The rectangular clamping plate 1-4 can enter the hollow position inside the scraper ring 1-3 through the rectangular opening 1-5 at the bottom of the scraper ring 1-3. When the scraper ring 1-3 rotates 90° along the outer wall of the sampling rod 1-1 under the action of external force, the length direction of the rectangular clamping plate 1-4 is perpendicular to the length direction of the rectangular opening 1-5 at the bottom of the scraper ring 1-3. At this time, the rectangular clamping plate 1-4 is embedded in the scraper ring 1-3.

[0033] Except for the scraping rings 1-3 and the sample arrangement unit 3, the rest are the same as those in Example 1.

[0034] When in use, first spray a sufficient amount of foam sample into the beaker, hold the first circular card plate 1-2 and insert the sampling unit 1 into the beaker filled with the sample for stirring, so that the sample in the beaker is fully mixed to ensure the uniformity of sampling, hold the first circular card plate 1-2 and lift the sampling unit 1, at this time, the brush part of the sampling rod 1-1 is fully attached to the foam sample, and the brush part of the sampling rod 1-1 is inserted into the sample storage unit 2 until the scraping ring 1-3 and the first annular limit card plate 2-3 The sample enters the sample storage chamber 2-2 along with the brush of the sampling rod 1-1. The scraper ring 1-3 and the first annular limit card plate 2-3 are fixed together with the left hand, and the first circular card plate 1-2 is lifted up with the right hand. During this process, the sample on the brush of the sampling rod 1-1 is separated from the brush by the scraping force of the scraper ring 1-3 and remains in the sample storage chamber 2-2. The sampling rod 1-1 and the brush pass through the center of the scraper ring 1-3 and reach the top of the scraper ring 1-3. When the rectangular card plate 1-4 reaches the bottom of the scraper ring 1-3, When the square opening 1-5 is reached, continue to lift the first circular clamping plate 1-2 so that the rectangular clamping plate 1-4 passes through the rectangular opening 1-5 at the bottom of the scraping ring 1-3 and reaches the inside of the scraping ring 1-3. Fix the scraping ring 1-3 with your left hand, and pinch the first circular clamping plate 1-2 with your right hand and rotate it 90° clockwise. At this time, the length direction of the rectangular clamping plate 1-4 is perpendicular to the length direction of the rectangular opening 1-5 at the bottom of the scraping ring 1-3. The taken sample remains in the sample storage cavity 2-2, and the sample discharge tube 2-5 is placed above the weighing bottle. Lift the first annular limiting clamping plate 2-3 with your index finger and middle finger, and slowly push down the first circular clamping plate 1-2 with your thumb, so that the scraping ring 1-3 pushes the sample in the sample storage cavity 2-2 into the weighing bottle through the sample discharge tube 2-5. The sample discharge speed and sample discharge volume can be appropriately controlled by the downward pushing speed of the first circular clamping plate 1-2. Sample discharge tubes 2-5 with different inner diameters can also be designed according to the required precision requirements of the sample weighing volume, so as to more accurately control the sample discharge speed and sample discharge volume.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for using a manual dispensing device for inspecting foam cosmetics, characterized in that: A manual sampling device for inspecting foam cosmetics used in use comprises a sampling unit, a sample storage unit and a sample discharging unit; the sampling unit is provided with a sampling rod, the outer side wall of the sampling rod is a brush-shaped structure, the top of the sampling rod is provided with a first circular clamping plate, the outer side of the upper part of the sampling rod is provided with a scraping ring, and the bottom of the sampling rod is provided with a rectangular clamping plate; the sample storage unit is provided with a sample storage cylinder, the interior of the sample storage cylinder is provided with a sample storage cavity, the outer side of the top of the sample storage cylinder is provided with a first annular limiting clamping plate, the inner side of the bottom of the sample storage cylinder is provided with a second annular limiting clamping plate, and a sample discharging tube is provided at the center of the second annular limiting clamping plate; the sample discharging unit is provided with a sample discharging rod, the top of the sample discharging rod is provided with a second circular clamping plate, and the bottom of the sample discharging rod and the outer side wall of the bottom are provided with a sealing rubber ring; the brush on the outer side wall of the sampling rod is perpendicular to the sampling rod, and the length of the brush on the outer side wall of the sampling rod should be adapted to the inner diameter of the sample storage cylinder; The length of the rod is matched with the height of the sample storage tube, so that when the sampling unit is inserted into the sample storage unit, the brush part of the sampling rod fills the sample storage cavity; the diameter of the sealing rubber ring should be matched with the diameter of the sample storage tube, so that when the sample row unit is inserted into the sample storage unit, the outer wall of the sealing rubber ring is sealed and connected with the inner wall of the sample storage tube; the scraper ring is annular, and the inner ring diameter of the scraper ring is matched with the diameter of the non-brush part of the sampling rod, so that in the process of the scraper ring being lowered from the top of the sampling rod to the bottom of the sampling rod, the foam sample attached to the brush of the sampling rod can be fully separated from the brush under the scraping force of the scraper ring, and the outer ring diameter of the scraper ring is matched with the inner diameter of the sample storage tube; the length of the rectangular card plate is greater than the diameter of the non-brush part of the sampling rod and smaller than the inner diameter of the sample storage tube; the sample storage tube is a cylindrical shape with a hollow interior and openings at both ends; the sample row tube is hollow interior and openings at both ends, and the sample row tube is connected with the sample storage cavity; The method of use comprises the following steps: firstly spraying the foam sample into the beaker, holding the first circular card plate and inserting the sampling unit into the beaker filled with the sample for stirring to fully mix the sample in the beaker, holding the first circular card plate and lifting the sampling unit, at which time the brush part of the sampling rod is attached to the foam sample, inserting the brush part of the sampling rod into the sample storage unit until the scraping ring is flush with the first annular limiting card plate, and the sample enters the sample storage cavity with the brush of the sampling rod, fixing the scraping ring and the first annular limiting card plate together with the left hand, and lifting the first circular card plate with the right hand. In this process, the sample on the brush of the sampling rod is removed by the scraping force of the scraping ring. The brush remains in the sample storage cavity, the sampling rod and the brush pass through the center of the scraper ring and reach above the scraper ring. When the rectangular card plate reaches the bottom of the scraper ring, the sampling unit is separated from the sample storage unit, and the sample remains in the sample storage cavity. The sample discharge unit is inserted into the sample storage cavity of the sample storage unit by holding the second circular card plate, and the sample discharge tube is placed above the weighing bottle. The index finger and middle finger lift the first annular limiting card plate, and the thumb slowly pushes down the second circular card plate, so that the sealing rubber ring pushes the sample in the sample storage cavity through the sample discharge tube into the weighing bottle, and the sample discharge speed and sample discharge amount are controlled by the pushing down speed of the second circular card plate.

2. The method for using the manual dispensing device for inspecting foam cosmetics according to claim 1, characterized in that: The scraper ring is a ring with a hollow interior and a rectangular opening in the diameter direction of the bottom. The rectangular clamping plate enters the hollow position inside the scraper ring through the rectangular opening at the bottom of the scraper ring. When the scraper ring rotates along the outer wall of the sampling rod under the action of an external force, the length direction of the rectangular clamping plate is perpendicular to the length direction of the rectangular opening at the bottom of the scraper ring. At this time, the rectangular clamping plate is embedded in the scraper ring. The sample on the sampling rod brush is separated from the brush by the scraping force of the scraper ring and remains in the sample storage cavity. The subsequent method of use includes the following steps: the sampling rod and the brush pass through the center of the scraper ring to reach the top of the scraper ring, and when the rectangular card plate reaches the rectangular opening at the bottom of the scraper ring, continue to lift the first circular card plate so that the rectangular card plate passes through the rectangular opening at the bottom of the scraper ring to the inside of the scraper ring, fix the scraper ring with the left hand, and pinch the first circular card plate with the right hand and rotate it 90° clockwise. At this time, the length direction of the rectangular card plate is perpendicular to the length direction of the rectangular opening at the bottom of the scraper ring, and the sample remains in the sample storage cavity.

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