Sample freezing device for analyzing content of microcystin in seaweed

Abstract

The utility model relates to the technical field of sample freezing, and discloses a sample freezing device for analyzing the content of microcystic toxins in algae, which is characterized in that a refrigerator is arranged on a fixed frame, and a sealing machine cover is arranged at the top of the refrigerator. A sample frame is arranged below the cover, and the fixing frame is further provided with a driving mechanism to achieve automatic lifting of the cover. The driving mechanism comprises a lifting motor, the motor is connected with a screw through a coupler, a nut seat and a lifting frame are arranged outside the screw, and overhanging rods are arranged on the two sides of the lifting frame and connected with the machine cover. Through the arrangement of the driving mechanism, the automatic lifting of the machine cover is realized, the manual operation is reduced, the working efficiency is improved, the safety risk caused by the manual operation is avoided, and the labor intensity of operators is reduced. The sample frame is internally provided with a plurality of sample grooves and through holes, so that the sample can be uniformly cooled in the freezing process, and the uniformity of sample freezing and the accuracy of an analysis result are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sample freezing, in particular to a sample freezing device for analyzing the content of microcystin in seaweed. Background Art

[0002] The detection of microcystins is becoming increasingly important in the current fields of environmental monitoring and food safety. Microcystins are toxic substances produced by cyanobacteria (also known as blue-green algae). When they reproduce in large quantities in water bodies, they pose a threat to aquatic life and human health. As seaweed is a common organism in water bodies, analyzing the content of microcystins in seaweed is of great significance for assessing the degree of water pollution.

[0003] During sample collection, microcystins are easily degraded, so liquid nitrogen freezing is often used. However, existing liquid nitrogen freezing equipment often relies on manual operation, requiring protective clothing to manually open the device. This is not only time-consuming and labor-intensive, but also poses safety risks and operational inconveniences, making automated and efficient sample processing impossible.

[0004] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop a sample freezing device for analyzing the content of microcystin in seaweed. Utility Model Content

[0005] The utility model aims to provide a sample freezing device for analyzing the content of microcystin in seaweed, so as to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A technical solution for a sample freezing device for analyzing the content of microcystin in seaweed, comprising a fixed frame, a freezer provided on the front of the fixed frame, a sealing cover provided on the top of the freezer, a sample frame installed on the bottom of the cover, a drive mechanism for automatically raising and lowering the cover installed on the fixed frame, the drive mechanism comprising a lifting motor, a screw connected to the output end of the lifting motor via a coupling, a nut seat provided on the outer surface of the screw, a lifting frame installed on the nut seat, and symmetrically provided with outriggers on the lifting frame, the outriggers connected to the cover.

[0008] As a preferred technical solution, guide rails are installed on the fixing frames on both sides of the screw rod, and a slide seat is slidably connected to the outside of the guide rails, and the slide seat is connected to the lifting frame.

[0009] As a preferred technical solution, the screw rod is threadedly connected to the nut seat, and the nut seat is connected to the lifting frame through bolts.

[0010] As a preferred technical solution, the lifting motor is a stepping motor, which has high positioning accuracy and repeatability, ensuring that the lifting and lowering action of the cover is accurate.

[0011] As a preferred technical solution, a plurality of sample slots are provided inside the sample frame, each sample slot is used to place a sample, and a through hole is provided at the bottom of the sample slot to ensure that the sample can be evenly cooled during the freezing process.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The present invention provides a sample freezing device for analyzing the microcystin content in seaweed. The drive mechanism allows for automatic lifting and lowering of the lid, reducing manual operation, improving work efficiency, avoiding the safety risks associated with manual operation, and reducing operator labor intensity. Multiple sample slots and through-holes within the sample frame ensure uniform cooling of the sample during the freezing process, improving the uniformity of sample freezing and the accuracy of analytical results. This solution is compact, easy to operate, and simple to maintain, offering broad application prospects and market value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a sample freezing device for analyzing the content of microcystin in seaweed;

[0015] Figure 2 This is a schematic diagram of the front structure of a sample freezing device for analyzing the content of microcystin in seaweed;

[0016] Figure 3 This is a schematic diagram of the side structure of a sample freezing device used for analyzing the microcystin content in seaweed.

[0017] In the accompanying drawings, 1. fixed frame; 21. lifting motor; 22. screw; 23. coupling; 24. nut seat; 25. lifting frame; 26. extension rod; 3. freezer; 31. machine cover; 32. sample frame; 41. guide rail; 42. slide seat. DETAILED DESCRIPTION

[0018] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0019] like Figure 1 、 Figure 2 and Figure 3 As shown, the present invention provides a technical solution for a sample freezing device for analyzing the microcystin content in seaweed. The device comprises a fixed frame 1, a freezer 3 disposed on the front of the fixed frame 1, a sealed cover 31 disposed on top of the freezer 3, a sample holder 32 mounted on the bottom of the cover 31, and a drive mechanism mounted on the fixed frame 1 for automatically raising and lowering the cover 31. The drive mechanism comprises a lifting motor 21, the output end of which is connected to a screw 22 via a coupling 23. A nut seat 24 is mounted on the screw 22, and a lifting frame 25 is mounted on the nut seat 24. The lifting frame 25 is symmetrically provided with extension rods 26 connected to the cover 31.

[0020] Among them, guide rails 41 are installed on the fixed frames 1 on both sides of the screw 22, and a slide 42 is slidably connected to the outside of the guide rails 41, and the slide 42 is connected to the lifting frame 25. Through this design, the slide 42 can slide smoothly on the guide rails 41 to ensure the stable lifting of the lifting frame 25.

[0021] Among them, the screw rod 22 is threadedly connected to the nut seat 24, and the nut seat 24 is connected to the lifting frame 25 by bolts. This connection method ensures a close fit between the screw rod 22 and the nut seat 24, thereby ensuring the smooth movement of the lifting frame 25.

[0022] The lifting motor 21 is a stepper motor with high positioning accuracy and repeatability, ensuring accurate lifting of the cover 31. The use of a stepper motor allows precise control of the lifting of the cover 31, thereby improving the automation and operational reliability of the entire device.

[0023] The sample frame 32 is internally provided with multiple sample wells, each for holding a sample. Through holes are provided at the bottom of the sample wells to ensure that the samples are evenly cooled during the freezing process. This design ensures that the samples maintain a uniform temperature during the freezing process, thereby improving the efficiency of sample freezing and the accuracy of analytical results.

[0024] In this embodiment, the seaweed samples to be analyzed are placed in the sample slots in the sample frame 32. It is ensured that only one sample is placed in each sample slot to facilitate subsequent analysis and processing.

[0025] Next, the lifting motor 21 is activated, and the stepper motor begins to rotate, driving the screw 22 through the coupling 23. The rotation of the screw 22 causes the nut seat 24 to move along the thread direction, thereby pushing the lifting frame 25 up or down. The movement of the lifting frame 25 drives the extension rod 26, which in turn controls the opening and closing of the cover 31. When the cover 31 needs to be closed, the lifting frame 25 moves upward, and the extension rod 26 pushes the cover 31 down until it completely covers the top of the freezer 3, achieving a seal. Conversely, when the cover 31 needs to be opened, the lifting frame 25 moves downward, and the extension rod 26 drives the cover 31 up, revealing the sample frame 32.

[0026] After the lid 31 is closed, the freezer 3 begins operating, rapidly freezing the sample using liquid nitrogen or other freezing medium inside the freezer. Because the sample tank has through-holes at the bottom, the sample is evenly cooled during the freezing process, ensuring uniform freezing and accurate microcystin analysis.

[0027] After the freezing is completed, the lifting motor 21 is driven in the same manner to control the cover 31 to open, so that the operator can conveniently take out the frozen sample for subsequent analysis and processing.

[0028] The working principle and use process of the utility model: After the utility model is installed, it works according to the above implementation method until all working steps are completed.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0032] While the embodiments described above are based on the present invention, these embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Clearly, many modifications and variations are possible based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better utilize the present invention and its modifications and uses. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sample freezing device for analyzing the content of microcystin in seaweed, characterized in that: The invention comprises a fixing frame (1), wherein a freezer (3) is arranged on the front of the fixing frame (1), a sealing cover (31) is arranged on the top of the freezer (3), a sample frame (32) is installed on the bottom of the cover (31), and a driving mechanism for automatically lifting the cover (31) is installed on the fixing frame (1), wherein the driving mechanism comprises a lifting motor (21), an output end of the lifting motor (21) is connected to a screw rod (22) through a coupling (23), a nut seat (24) is sheathed on the screw rod (22), a lifting frame (25) is installed on the nut seat (24), and an extension rod (26) is symmetrically arranged on the lifting frame (25), and the extension rod (26) is connected to the cover (31).

2. The sample freezing device for analyzing the content of microcystin in seaweed according to claim 1, characterized in that: Guide rails (41) are installed on the fixing frames (1) on both sides of the screw rod (22), and a slide seat (42) is slidably connected to the outside of the guide rails (41), and the slide seat (42) is connected to the lifting frame (25).

3. The sample freezing device for analyzing the content of microcystin in seaweed according to claim 1, characterized in that: The screw rod (22) is threadedly connected to the nut seat (24), and the nut seat (24) is connected to the lifting frame (25) through bolts.

4. The sample freezing device for analyzing the content of microcystin in seaweed according to claim 1, characterized in that: The lifting motor (21) is a stepping motor with high positioning accuracy and repeat positioning accuracy, ensuring that the lifting action of the cover (31) is accurate.

5. The sample freezing device for analyzing the content of microcystin in seaweed according to claim 1, characterized in that: The sample frame (32) is provided with a plurality of sample slots inside, each of which is used to place a sample, and a through hole is provided at the bottom of the sample slot to ensure that the sample can be cooled evenly during the freezing process.

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