A sample solution preparation device for public chopsticks

Abstract

The utility model discloses a kind of sample solution preparation devices of public tableware chopsticks, it is related to sample solution preparation technical field, and it includes: sample solution preparation structure, chopstick limiting structure and sieve plate positioning structure, sample solution preparation structure includes bottom plate, fixedly installed on the upper surface of bottom plate magnetic stirrer, and wide-mouth glass sampling bottle placed on the tray of magnetic stirrer, chopstick limiting structure includes circular sieve plate, fixedly installed on the outer surface of circular sieve plate connecting rod.The utility model has the beneficial effect that: the chopsticks are placed in the circular through hole on the circular sieve plate, the circular through hole can be clamped in the middle of chopstick, ensure that the bottom end of multiple chopsticks is in the same plane, and there is gap between each chopstick, then sieve plate positioning structure is used to adjust the height of circular sieve plate, control the height of chopstick into water liquid level, so that multiple chopsticks can be simultaneously sampled, and it can also prevent a handful of chopsticks from being washed insufficiently when being washed.

Description

Technical Field

[0001] This utility model belongs to the field of sample preparation technology, and in particular relates to a sample preparation device for chopsticks used as public tableware. Background Technology

[0002] When conducting physicochemical tests on detergents and free residual chlorine for public tableware, representative tableware samples need to be converted to a suitable testing state. According to the sampling description in Appendix A of GB 14934-2016 "National Food Safety Standard for Disinfected Tableware," when sampling chopsticks, the lower section (approximately 5cm from the inlet end) should be placed in an appropriate amount of distilled water (at a ratio of 100cm / cm²). 2 (Using 100mL of distilled water as a guideline) Shake thoroughly 20 times to prepare a sample solution for testing. Simulation calculations show that the surface area of ​​the bottom 5cm of each chopstick is approximately 10cm². 2 Each 100mL of distilled water requires washing 10 chopsticks. According to the testing standards and considering the sample requirements for parallel testing, verification testing, and spiked quality control, the total sample volume required to test the two physicochemical indicators is approximately 500mL. Therefore, approximately 50 chopsticks are needed to complete the sample collection.

[0003] Practice has revealed significant technical bottlenecks in traditional sampling methods: First, while using only 1-2 chopsticks for a single operation ensures thorough rinsing of all contact surfaces, it requires repeated rinsing, resulting in extremely low efficiency. Using the entire bundle for rinsing leads to chopsticks obstructing each other, preventing some contact surfaces from being effectively rinsed and increasing the risk of false negatives. Second, during rinsing, it is difficult to precisely control the depth of water penetration at the bottom of the chopsticks, leading to inconsistent depths and affecting the representativeness of the sample concentration. To address these shortcomings, we propose a sample preparation device for public tableware chopsticks. Utility Model Content

[0004] The purpose of this invention is to provide a sample preparation device for chopsticks used as public tableware, in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A sample liquid preparation device for public tableware chopsticks, comprising: A sample preparation structure, comprising a base plate, a magnetic stirrer fixedly mounted on the upper surface of the base plate, and a wide-mouth glass sampling bottle placed on the magnetic stirrer tray; The chopstick limiting structure includes a circular sieve plate, a connecting rod fixedly installed on the outer surface of the circular sieve plate, and multiple sets of circular through holes arranged in a circumferential array on the upper end of the circular sieve plate. The circular through holes allow the small end of the chopsticks to pass through, but do not allow the large end of the chopsticks to pass through. The screen plate positioning structure includes a telescopic cylinder fixedly installed on the upper surface of the base plate, a telescopic rod slidably installed on the inner wall of the telescopic cylinder, and a locking assembly provided on the surface of the telescopic cylinder for locking the telescopic rod. The end of the connecting rod away from the circular screen plate is fixedly connected to the upper end of the telescopic rod.

[0006] Preferably, the locking assembly includes a rectangular frame fixedly installed on the surface of the telescopic cylinder, a through groove formed in the inner wall of the rectangular frame, a locking block slidably installed in the inner wall of the through groove, and a locking bolt threadedly connected to the surface of the rectangular frame. The through groove is in communication with the inner wall of the telescopic cylinder, and the threaded end of the locking bolt extends into the interior of the through groove and is rotatably connected to one side of the locking block.

[0007] Preferably, the telescopic rod has a locking groove on the side near the locking block, and an anti-slip rubber pad is fixedly installed on the surface of the locking block.

[0008] Preferably, the wide-mouth glass sampling bottle allows a circular sieve plate to enter.

[0009] Preferably, the surface of the wide-mouth glass sampling bottle is etched with graduations for measuring solvent content.

[0010] Preferably, the upper end of the wide-mouth glass sampling bottle is fitted with a polytetrafluoroethylene screw cap.

[0011] The sample liquid preparation device for public tableware chopsticks of this utility model has the following advantages: 1. Place the chopsticks in the circular through holes on the circular sieve plate. The circular through holes can limit and hold the middle of the chopsticks, ensuring that the bottom ends of multiple chopsticks are on the same plane and there are gaps between each chopstick. Then, use the sieve plate positioning structure to adjust the height of the circular sieve plate and control the height of the chopsticks in the water. This allows multiple chopsticks to be sampled at the same time and also prevents insufficient rinsing when rinsing a handful of chopsticks.

[0012] 2. The wide-mouth glass sampling bottle has graduation lines on its surface, which can directly measure water samples. After sampling and rinsing, the PTFE screw cap can be put on, which can reduce the carrying of sampling equipment (beakers, measuring cylinders, etc.) and also reduce the transfer steps after the sample solution is prepared. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front section structure of the locking component of this utility model; Figure 3 This is a schematic diagram of the three-dimensional structure of the circular sieve plate of this utility model; Figure 4 for Figure 1 Enlarged structural diagram at point A in the middle.

[0015] The markings in the diagram are as follows: 10 Base plate, 11 Magnetic stirrer, 12 Wide-mouth glass sampling bottle, 13 PTFE screw cap, 20 Circular sieve plate, 21 Connecting rod, 22 Circular through hole, 30 Telescopic cylinder, 31 Telescopic rod, 40 Rectangular frame, 41 Locking block, 42 ​​Locking bolt, 43 Anti-slip rubber pad, 44 Locking groove. Detailed Implementation

[0016] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0017] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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 the embodiments of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0020] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0021] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a sample preparation device for public tableware chopsticks.

[0022] like Figure 1-4 As shown, the present invention provides a sample preparation device for public tableware chopsticks, comprising: a sample preparation structure, a chopsticks limiting structure, and a sieve plate positioning structure.

[0023] The sample preparation structure includes a base plate 10, a magnetic stirrer 11 fixedly mounted on the upper surface of the base plate 10, and a wide-mouth glass sampling bottle 12 placed on the tray of the magnetic stirrer 11. The surface of the wide-mouth glass sampling bottle 12 is etched with graduations for measuring solvent content. A polytetrafluoroethylene (PTFE) screw cap 13 is fitted to the upper end of the wide-mouth glass sampling bottle 12. Graduation lines are set on the inner wall of the wide-mouth glass sampling bottle 12, allowing direct measurement of water samples. After placing the wide-mouth glass sampling bottle 12 on the magnetic stirrer 11, the magnetic stir bar of the magnetic stirrer 11 is placed inside the wide-mouth glass sampling bottle 12 to stir the liquid inside. After sampling and rinsing, the PTFE screw cap 13 can be closed, reducing the need for sampling equipment (such as...). It can be carried in containers such as beakers and graduated cylinders, which can also reduce the number of steps required to transfer the prepared sample solution.

[0024] The chopstick limiting structure includes a circular sieve plate 20, a connecting rod 21 fixedly installed on the outer surface of the circular sieve plate 20, and multiple sets of circular through holes 22 arranged in a circumferential array on the upper end of the circular sieve plate 20. The circular through holes 22 allow the small end of the chopsticks to pass through, but do not allow the large end of the chopsticks to pass through. The wide-mouth glass sampling bottle 12 allows the circular sieve plate 20 to enter. Multiple chopsticks are inserted into the multiple sets of circular through holes 22 respectively. After the small end of the chopsticks passes through the circular through holes 22, the middle part of the chopsticks can be limited and clamped.

[0025] The sieve plate positioning structure includes a telescopic cylinder 30 fixedly installed on the upper surface of the base plate 10, a telescopic rod 31 slidably installed on the inner wall of the telescopic cylinder 30, and a locking assembly provided on the surface of the telescopic cylinder 30 for locking the telescopic rod 31. The end of the connecting rod 21 away from the circular sieve plate 20 is fixedly connected to the upper end of the telescopic rod 31. Pulling the telescopic rod 31 can adjust the height of the circular sieve plate 20, thereby adjusting the height of the chopsticks in the water.

[0026] The locking assembly includes a rectangular frame 40 fixedly mounted on the surface of the telescopic cylinder 30, a through groove formed in the inner wall of the rectangular frame 40, a locking block 41 slidably mounted on the inner wall of the through groove, and a locking bolt 42 threadedly connected to the surface of the rectangular frame 40. The through groove is connected to the inner wall of the telescopic cylinder 30. The threaded end of the locking bolt 42 extends into the inside of the through groove and is rotatably connected to one side of the locking block 41. A locking groove 44 is formed on the side of the telescopic rod 31 near the locking block 41. An anti-slip rubber pad 43 is fixedly mounted on the surface of the locking block 41. Tightening the locking bolt 42 causes the anti-slip rubber pad 43 to contact the locking groove 44, thereby locking the telescopic rod 31 inside the telescopic cylinder 30. Loosening the locking bolt 42 causes the anti-slip rubber pad 43 to move away from the locking groove 44, thereby adjusting the height of the telescopic rod 31.

[0027] The chopsticks are placed in the circular through-hole 22 on the circular sieve plate 20. After the chopsticks are clamped and limited by the circular through-hole 22, it can be ensured that the bottom ends of multiple chopsticks are on the same plane. Then, the height of the circular sieve plate 20 is adjusted by the sieve plate positioning structure, and the height of the chopsticks in the water is controlled. This allows multiple chopsticks to be sampled at the same time, and also prevents insufficient rinsing when rinsing a handful of chopsticks.

[0028] How it works: 1. Insert multiple chopsticks into the circular through holes 22 on the circular sieve plate 20. Utilize the characteristic that one end of the chopsticks is larger than the other end to achieve self-locking. At this time, the bottom ends of multiple chopsticks are all on the same plane, and there is a gap between each chopstick. 2. Adjust the telescopic rod 31 to lower the circular sieve plate 20 into the wide-mouth glass sampling bottle 12, ensuring that the chopsticks are immersed to a depth of at least 5cm; 3. Start the magnetic stirrer 11 to perform multiple oscillation cycles to prepare the sample solution; 4. Tighten the PTFE screw cap 13, and take out the wide-mouth glass sampling bottle 12 for direct testing.

[0029] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. A sample solution preparation device for public tableware chopsticks, characterized in that, include: The sample preparation structure includes a base plate (10), a magnetic stirrer (11) fixedly installed on the upper surface of the base plate (10), and a wide-mouth glass sampling bottle (12) placed on the tray of the magnetic stirrer (11). The chopstick limiting structure includes a circular sieve plate (20), a connecting rod (21) fixedly installed on the outer surface of the circular sieve plate (20), and multiple sets of circular through holes (22) arranged in a circumferential array on the upper end of the circular sieve plate (20). The circular through holes (22) allow the small end of the chopstick to pass through, but do not allow the large end of the chopstick to pass through. The sieve plate positioning structure includes a telescopic cylinder (30) fixedly installed on the upper surface of the base plate (10), a telescopic rod (31) slidably installed on the inner wall of the telescopic cylinder (30), and a locking assembly provided on the surface of the telescopic cylinder (30) for locking the telescopic rod (31), and the end of the connecting rod (21) away from the circular sieve plate (20) is fixedly connected to the upper end of the telescopic rod (31).

2. The sample solution preparation device for public tableware chopsticks according to claim 1, characterized in that: The locking assembly includes a rectangular frame (40) fixedly installed on the surface of the telescopic cylinder (30), a through groove opened on the inner wall of the rectangular frame (40), a locking block (41) slidably installed on the inner wall of the through groove, and a locking bolt (42) threadedly connected to the surface of the rectangular frame (40). The through groove is in communication with the inner wall of the telescopic cylinder (30), and the threaded end of the locking bolt (42) extends into the inside of the through groove and is rotatably connected to one side of the locking block (41).

3. The sample solution preparation device for public tableware chopsticks according to claim 2, characterized in that: The telescopic rod (31) has a locking groove (44) on the side near the locking block (41), and an anti-slip rubber pad (43) is fixedly installed on the surface of the locking block (41).

4. The sample solution preparation device for public tableware chopsticks according to claim 1, characterized in that: The wide-mouth glass sampling bottle (12) allows the circular sieve plate (20) to enter.

5. The sample solution preparation device for public tableware chopsticks according to claim 1, characterized in that: The surface of the wide-mouth glass sampling bottle (12) is etched with graduations for measuring solvent content.

6. The sample solution preparation device for public tableware chopsticks according to claim 1, characterized in that: The upper end of the wide-mouth glass sampling bottle (12) is fitted with a polytetrafluoroethylene screw cap (13).

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