An analytical chemistry experimental sample separation device

Abstract

This application relates to the field of chemical sample sorting technology, and more specifically, to an analytical chemistry experimental sample separation device. An inner cylinder is fixedly fitted inside each cylinder of a sieve assembly, and an annular separation chamber is formed between each cylinder and the inner cylinder. The side wall of the inner cylinder has an opening communicating with the separation chamber, and a gate is installed at the opening. Thus, when the analytical chemistry experimental sample undergoes a helical diffusion motion on the sieve surface, some of the sample will contact the gate and be guided to the opening to enter the annular separation chamber, thereby extending the screening path of the analytical chemistry experimental sample. Using the above structural design, small-particle-size analytical chemistry experimental samples can be secondary-screened within the separation chamber, thereby improving the utilization rate of some samples and effectively solving the problem of sample waste in analytical chemistry experiments.

Description

Technical Field

[0001] This application relates to the field of chemical sample sorting technology, and more specifically, to an analytical chemistry experimental sample separation device. Background Technology

[0002] Analytical chemistry experimental samples serve as the carriers supporting the verification of chemical experimental principles. Their core function is to draw experimental conclusions through the reaction phenomena and data changes between different chemical samples, and to ensure the effectiveness of experimental teaching by enabling students to master practical skills related to sampling, detection, and analysis.

[0003] In related technologies, to avoid the particle size effect from affecting the final detection results and data, analytical chemistry experimental samples need to be screened for particle size before use. This ensures the uniformity of particle size in the analytical chemistry experimental samples and guarantees that subsequent reagents can fully contact and react with them, preventing problems such as incomplete or excessive local reactions.

[0004] In general, analytical chemistry experiments use vibrating screens for multi-stage sieving of samples. The working principle of a vibrating screen is to use a motor to drive an eccentric block to rotate, and transfer this vibrational energy to the screen surface, causing the screen surface to vibrate in three directions: horizontal, vertical, and inclined. Under the action of vibration, the material will pass through the screen in sequence to achieve sorting, and will eventually be separated into different collection areas.

[0005] However, in actual use, since the material mainly moves along a straight line or a short-distance curve on the sieve surface, some small-diameter analytical chemistry experimental samples are easily discharged from the feed pipe along with large-diameter samples or impurities without fully passing through the sieve holes, resulting in a high waste rate of analytical chemistry experimental samples. Summary of the Invention

[0006] In view of this, embodiments of this application provide an analytical chemistry experimental sample separation device to solve the problem of high waste rate of some small-particle-size analytical chemistry experimental samples in related technologies.

[0007] To achieve the above objectives, the embodiments of this application provide the following technical solutions: An analytical chemistry sample separation device, comprising: The base has a vertical vibration motor installed inside it, and an eccentric block is fixedly installed at the drive end of the vertical vibration motor. The screen cylinder assembly is composed of multiple cylinders stacked from top to bottom. The bottom cylinder is connected to the base through multiple damping springs. Each cylinder has a feeding pipe communicating with its interior on its outer wall. Screens with different screen hole sizes are also provided between adjacent cylinders. Multiple inner cylinders are respectively fitted inside the cylinder and in contact with the top surface of the screen. An annular separation cavity is formed between the inner cylinder and the cylinder, and an opening communicating with the separation cavity is also provided on the side wall of the inner cylinder. Multiple gates are vertically arranged at the opening and in contact with the top surface of the screen. They are fixedly connected to one side of the material near the opening along the vibration direction.

[0008] In some possible implementations, an annular support plate extends radially outward from the top of each inner cylinder, and the annular support plate is fixedly mounted to the top of each cylinder by fastening bolts.

[0009] In some possible implementations, the outer edge of the annular support plate extends downward to form a fastening ring, which is fitted onto the top of the cylinder and fits against the outer wall of the cylinder.

[0010] In some possible implementations, the connection ports between each of the feed pipes and the cylinder are located between two adjacent openings in the cylinder.

[0011] In some possible implementations, the gate is detachably fixed to the opening by fixing screws.

[0012] In some possible implementations, the gate is formed by a bending process, comprising an integrally formed fixed part and a bent part; the fixed part is detachably fixed to the inner cylinder sidewall by fixing screws, and the bent part is fitted to the opening of the inner cylinder sidewall and forms an angle of 30° to 60° with the material movement direction.

[0013] The analytical chemistry experimental sample separation device provided in this application has at least the following beneficial effects: In the analytical chemistry sample separation device provided in this application embodiment, an inner cylinder is fixedly fitted inside each cylinder of the sieve assembly, and an annular separation chamber is formed between each cylinder and the inner cylinder. The side wall of the inner cylinder also has an opening communicating with the separation chamber. Thus, when the analytical chemistry sample undergoes a spiral diffusion motion on the sieve surface, some of the sample will contact the gate and be guided to the opening to enter the annular separation chamber, thereby extending the sieving path of the analytical chemistry sample. Using the above structural design, small-particle-size analytical chemistry samples can be sieved a second time within the separation chamber, thereby improving the utilization rate of some samples and effectively solving the problem of sample waste in analytical chemistry experiments. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the analytical chemistry experimental sample separation device provided in the embodiments of this application; Figure 2 for Figure 1 Exploded view of the assembly of the base and the cylinder; Figure 3 for Figure 1 A top-view structural diagram; Figure 4 for Figure 1 Exploded view of the assembly of the inner cylinder and the outer cylinder; Figure 5 This is an assembly diagram of the inner cylinder and the cylinder body in another embodiment of this application; Figure 6 This is a schematic diagram of the inner cylinder structure in another embodiment of this application; Figure 7 This is a schematic diagram of the assembly of the gate and the inner cylinder in another embodiment of this application.

[0016] In the picture: 100. Base; 200. Vertical vibratory motor; 210. Eccentric block; 300. Cylinder body; 310. Feed pipe; 400. Vibration damping springs; 500, sieve; 600. Inner cylinder; 610. Annular support plate; 620. Fastening ring; 630. Opening; 700. Gate; 710. Fixing part; 720. Bending part; 800. Fixing screws; 900. Fastening bolts. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-4As shown in the figure, the analytical chemistry experimental sample separation device provided in this application embodiment includes a base 100, multiple cylinders 300, multiple inner cylinders 600, and multiple gate plates 700. The base 100 is the supporting structure of the separation device, and its shape is cylindrical, mainly serving to bear weight and stabilize the device. A cylindrical mounting cavity is formed inside the base 100, and a vertical vibration motor 200 is mounted vertically within the mounting cavity. An eccentric block 210 is fixedly connected to the drive end of the vertical vibration motor 200. When the vertical vibration motor 200 is started, it can drive the eccentric block 210 to rotate through the drive shaft to generate a certain excitation force.

[0019] The cylinder 300 is a tubular structure with openings 630 at both the top and bottom. Each cylinder 300 has a feed pipe 310 communicating with its interior on its side wall. Multiple cylinders 300 are stacked sequentially from top to bottom to form a sieve cylinder assembly. The bottom surface of the cylinder 300 at the bottom of the sieve cylinder assembly is sealed, and multiple damping springs 400 are evenly distributed along its circumferential direction. This cylinder 300 is fixedly connected to the top of the base 100 via these damping springs 400. Furthermore, multiple screens 500 and sealing gaskets are provided between adjacent stacked cylinders 300. The outer diameter of the sieve openings of the multiple screens 500 gradually decreases from top to bottom to separate analytical chemical experimental samples of different particle sizes.

[0020] In this embodiment, each cylindrical body 300 is fixedly fitted with an inner cylinder 600. For example... Figure 4 As shown, the bottom surface of each inner cylinder 600 is in contact with the surface of the corresponding sieve 500, and an annular separation cavity is formed between the outer side wall of each inner cylinder 600 and the inner side wall of the cylinder body 300. Furthermore, each inner cylinder 600 has an opening 630 on its side wall that communicates with the separation cavity; multiple openings 630 are equidistantly distributed along the circumferential direction on the side wall of the inner cylinder 600. In actual use, the chemical analysis sample poured onto the sieve 500 can enter the separation cavity through the opening 630 during the rotary sieving process, thereby prolonging the vibration sieving process and ultimately improving the sorting effect.

[0021] Continue as Figure 4 As shown, multiple gates 700 correspond one-to-one with multiple openings 630, and the gates 700 are fixedly installed on the side of each opening 630. The multiple gates 700 are distributed in a ring shape at equal intervals inside the inner cylinder 600, and the gates 700 are located on the side where the material moves in a clockwise direction and is close to the opening 630.

[0022] The following is combined Figures 1-4 The working principle and working process of the analytical chemistry experimental sample separation device provided in the embodiments of this application are described.

[0023] 1. Working principle: The technical solution of this application embodiment is based on the principle of composite vibration sieving. The vertical vibration motor 200 drives the eccentric block 210 to rotate, generating a composite excitation force in the horizontal, vertical and inclined directions. This excitation force is transmitted to the sieve cylinder assembly and the sieve 500, so that the analytical chemical sample makes a spiral diffusion motion on the sieve 500.

[0024] The gate 700 guides the analytical chemical sample toward the opening 630. Some samples enter the annular separation chamber and undergo secondary sieving under vibration. Small-diameter samples pass through the screen 500 into the lower cylinder 300, while insufficiently sieved samples move along the separation chamber and are discharged from the feed pipe 310, thus ultimately achieving the purpose of extending the sieving path and improving the sieving adequacy.

[0025] 2. Work process: Select the appropriate sieve 500 according to the experimental requirements, and complete the replacement and assembly of the sieve 500 according to the traditional assembly process. Place the corresponding collection container below the feed pipe 310 of each cylinder 300. Start the vertical vibration motor 200 to preheat for 1-2 minutes. Evenly put the analytical chemical experimental sample (solid powder or granules) to be sieved into the central area of ​​the sieve 500 of the top cylinder 300. The amount of material added should not exceed 1 / 3 of the volume of the top cylinder 300.

[0026] A vertical vibration motor 200 drives an eccentric block 210 to rotate, generating a composite excitation force. The analytical chemistry experimental sample undergoes a spiral diffusion motion from the center to the edge on the top sieve 500. When the analytical chemistry experimental sample contacts the gate 700, its movement direction is guided to the opening 630, and some of the sample will also enter the separation cavity formed by the top cylinder 300 and the inner cylinder 600.

[0027] Analytical chemical samples entering the separation chamber are subjected to continuous vibration. Small-sized samples pass through the top sieve 500 into the middle cylinder 300, while large-sized samples move along the separation chamber to the adjacent opening 630 and are finally discharged from the feed pipe 310, completing the first-stage classification. Analytical chemical samples entering the middle cylinder 300 undergo the same screening and separation process on the middle sieve 500. Similarly, the bottom sieve 500 operates in the same manner.

[0028] After the analytical chemistry experiment sample screening and separation is completed, turn off the vertical vibration motor 200. After it stops vibrating, disassemble each cylinder 300 and inner cylinder 600, and clean the residual material on the screen 500 to complete the entire experiment.

[0029] In the analytical chemistry sample separation device provided in this application embodiment, an inner cylinder 600 is fixedly sleeved inside each cylinder 300 of the sieve cylinder assembly, and an annular separation chamber is formed between each cylinder 300 and the inner cylinder 600. The side wall of the inner cylinder 600 also has an opening 630 communicating with the separation chamber. Thus, when the analytical chemistry sample undergoes a spiral diffusion motion on the surface of the sieve 500, some of the sample will contact the gate 700 and be guided to the opening 630 to enter the annular separation chamber, thereby extending the screening path of the analytical chemistry sample. Using the above structural design, small-particle-size analytical chemistry samples can be secondary-screened within the separation chamber, thereby improving the utilization rate of some samples and effectively solving the problem of sample waste in analytical chemistry experiments.

[0030] In some embodiments, such as Figure 6 As shown, each inner cylinder 600 has an annular support plate 610 extending radially outward from its top. The annular support plate 610 is fixed to the top of each cylinder 300 by fastening bolts 900. This detachable fixing method between the annular support plate 610 and the fastening bolts 900 allows for precise positioning and a secure connection between the inner cylinder 600 and the cylinder 300, preventing displacement or loosening of the inner cylinder 600 during vibration. This ensures the stability of the separation chamber structure and guarantees consistent screening paths. Furthermore, this detachable design facilitates the disassembly, cleaning, and replacement of the inner cylinder 600, and also adapts to the adjustment requirements of the separation chamber width in different experimental scenarios, improving the versatility and ease of maintenance of the device.

[0031] In some embodiments, a fastening ring 620 extends downward from the outer edge of the annular support plate 610. The fastening ring 620 is sleeved on the top of the cylinder 300 and fits against the outer wall of the cylinder 300. This sleeved structure, where the fastening ring 620 fits against the outer wall of the cylinder 300, provides dual positioning, thereby further enhancing the connection stability between the inner cylinder 600 and the cylinder 300 to resist the impact of high-frequency vibrations and extend the service life of the components.

[0032] In some embodiments, such as Figure 5 As shown, the connection ports of each feed pipe 310 and the cylinder 300 are all located between two adjacent openings 630 of the cylinder 300. This means that the analytical chemical test sample entering the separation chamber must move along a circular path to the connection port before it can be discharged. This extends the sieving time of the analytical chemical test sample in the separation chamber, ensuring that small-diameter samples fully pass through the sieve 500, further reducing the waste rate of analytical chemical test samples.

[0033] In some embodiments, such as Figure 7As shown, the gate 700 is formed by a bending process, and includes an integrally formed fixing part 710 and a bending part 720. The fixing part 710 is detachably fixed to the side wall of the inner cylinder 600 by fixing screws 800, and the bending part is fitted to the opening 630 on the side wall of the inner cylinder 600, and forms an angle of 30° to 60° with the material movement direction.

[0034] The gate 700 is designed as a single piece, which enhances its structural strength and stability, preventing deformation or breakage during vibration and ensuring consistent sample guidance. Furthermore, the 30°–60° angle design efficiently guides samples towards the opening 630 without excessively obstructing flow and causing accumulation. This balances sieving efficiency and thoroughness, further optimizing sample trajectory to ensure more samples can enter the separation chamber for secondary sieving.

[0035] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0036] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0037] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0038] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0039] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A sample separation device for analytical chemistry experiments, characterized in that, include: The base has a vertical vibration motor installed inside it, and an eccentric block is fixedly installed at the drive end of the vertical vibration motor. The screen cylinder assembly is composed of multiple cylinders stacked from top to bottom. The bottom cylinder is connected to the base through multiple damping springs. Each cylinder has a feeding pipe communicating with its interior on its outer wall. Screens with different screen hole sizes are also provided between adjacent cylinders. Multiple inner cylinders are respectively fitted inside the cylinder and in contact with the top surface of the screen. An annular separation cavity is formed between the inner cylinder and the cylinder, and an opening communicating with the separation cavity is also provided on the side wall of the inner cylinder. Multiple gates are vertically arranged at the opening and in contact with the top surface of the screen. They are fixedly connected to one side of the material near the opening along the vibration direction.

2. The analytical chemistry experimental sample separation device according to claim 1, characterized in that: Each inner cylinder has an annular support plate extending outward in the radial direction at its top, and the annular support plate is fixedly installed on the top of each cylinder by fastening bolts.

3. The analytical chemistry experimental sample separation device according to claim 2, characterized in that: The outer edge of the annular support plate extends downward to form a fastening ring, which is sleeved on the top of the cylinder and fits against the outer wall of the cylinder.

4. The analytical chemistry experimental sample separation device according to claim 1, characterized in that: The connection ports between each of the feeding pipes and the cylinder are located between two adjacent openings of the cylinder.

5. The analytical chemistry experimental sample separation device according to claim 1, characterized in that: The gate is detachably and fixedly installed at the opening by fixing screws.

6. The analytical chemistry experimental sample separation device according to claim 5, characterized in that: The gate is formed by a bending process and includes an integrally formed fixed part and a bent part; the fixed part is detachably fixed to the inner cylinder side wall by fixing screws, and the bent part is fitted to the opening of the inner cylinder side wall and forms an angle of 30° to 60° with the material movement direction.

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