Solid-phase extraction column for pretreatment of rice fungaltoxin

Abstract

The solid-phase extraction column comprises a column body, a mixing assembly is installed on the column body, the lower end of the mixing assembly is connected with an opening and closing assembly, the column body comprises a shell, a notch is formed in the shell, the mixing assembly comprises a fixing frame, and a stirring assembly is rotationally arranged at the center position below the fixing frame. The stirring assembly comprises a mixing cup used for receiving liquid, a liquid falling opening is formed in the center of the bottom of the mixing cup, and the swinging opening and closing assembly is used for controlling falling of the liquid from the liquid falling opening. According to the solid-phase extraction device, the gap is formed in the middle of the solid-phase extraction column, the opening and closing assembly is arranged and can move in the gap in the middle of the solid-phase extraction column, and when the opening and closing assembly swings to the position below the mixing cup, liquid in the mixing cup cannot flow out; therefore, when the solid-phase extraction column for pretreatment of the rice fungaltoxin is used, the rice fungaltoxin and a mixed solution can be fully mixed and then extracted.

Description

Technical Field

[0001] This utility model relates to the field of solid phase extraction column technology, specifically a solid phase extraction column for the pretreatment of rice mycotoxins. Background Technology

[0002] Solid-phase extraction (SPE) is a sample pretreatment device developed from chromatography columns, used for extraction, separation, and concentration. SPE technology has been widely used in many industry analytical standards. In chemical analysis, SPE is frequently used in the treatment of mycotoxins.

[0003] The prior art, disclosed in CN220404899U, provides a solid-phase extraction column for the pretreatment of mycotoxins, belonging to the field of solid-phase extraction column technology. This device includes a column body with several feed pipes connected to its top. A mixing cylinder is slidably connected to the top of the inner wall of the column, and a discharge pipe is fixedly connected to the bottom of the mixing cylinder. A drive assembly is driven to the outside of the discharge pipe, and a coil is rotatably connected to the bottom of the discharge pipe. An extraction section is connected to the bottom of the coil, and a discharge port is provided at the bottom of the extraction section. This solid-phase extraction column allows for mixing and extraction within the same column, and enables rapid liquid mixing, thus improving processing efficiency.

[0004] The aforementioned patent primarily involves adding rice mycotoxins and the mixed liquid together into a mixing cylinder to achieve rapid liquid mixing. However, this method of liquid mixing lacks a mechanism to control the liquid flow at the bottom of the mixing cylinder. Consequently, the liquid immediately falls into the extraction section below upon entering the mixing cylinder, resulting in only partial mixing of the accumulated liquid. This reduces the quality of the liquid mixture and diminishes the practicality of the solid-phase extraction column. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a solid phase extraction column for the pretreatment of rice mycotoxins, thus solving the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solid-phase extraction column for the pretreatment of rice mycotoxins, comprising a column body for extracting liquid, a mixing component for mixing rice mycotoxins and a mixed liquid detachably mounted on the top of the column body, an opening and closing component rotatably connected to the lower end of the mixing component, a shell including a notch for the opening and closing component to move within the shell, a fixing frame located above the column body, a stirring component rotatably disposed at the center below the fixing frame, a mixing cup for receiving liquid, a drop outlet at the center of the bottom of the mixing cup, and a swinging opening and closing component for controlling the liquid from the drop outlet. The swinging opening and closing component controls the liquid from the drop outlet, allowing the user to wait until the rice mycotoxins and the mixed liquid are fully mixed before allowing the mixture to fall, thus improving the thoroughness of liquid mixing in the solid-phase extraction column for the pretreatment of rice mycotoxins.

[0007] Furthermore, a straight bar is fixedly connected to one side of the bottom of the fixing frame. A T-shaped groove is formed at the end of the straight bar away from the fixing frame. The opening and closing assembly includes a T-shaped component, which rotatably resides within the T-shaped groove at the bottom of the straight bar. A turntable is fixedly installed at the end of the T-shaped component away from the straight bar. The top of the turntable is on the same horizontal plane as the top of the notch in the outer shell, and the top of the turntable is on the same horizontal plane as the bottom of the liquid outlet. The fact that the top of the turntable and the bottom of the liquid outlet are on the same horizontal plane prevents liquid above the liquid outlet from dripping when the turntable rotates onto the liquid outlet, thus improving the internal structural fit of the solid-phase extraction column used for the pretreatment of rice mycotoxins.

[0008] Furthermore, a cylindrical groove is formed at the center of the turntable, and a telescopic shaft is fixedly installed within the groove. A baffle plate with an inclined surface is fixedly installed on the top of the telescopic shaft, and a spring is provided on the outside of the telescopic shaft, located below the baffle plate. The spring is used to apply a restoring force to the baffle plate. This spring ensures that the turntable below the liquid outlet remains in close contact with the outlet at all times, improving the practicality of the solid-phase extraction column used for the pretreatment of rice mycotoxins.

[0009] Furthermore, a rectangular slot is provided at one end of the mounting bracket away from the assembly. A control board is bolted to the mounting bracket within this slot. A motor is fixedly mounted below the top plate of the mounting bracket, and the motor's control box is electrically connected to the control board. This electrical connection allows the control board to directly control the motor's operation, enhancing the intelligence of the solid-phase extraction column used for the pretreatment of rice mycotoxins.

[0010] Furthermore, multiple flow guide tubes for guiding liquid flow are fixedly connected above the base plate of the mounting frame. These flow guide tubes penetrate the base plate and are located inside the mixing cup. A funnel is fixedly connected to the end of each flow guide tube away from the mixing cup. This funnel connection allows the user to more conveniently add the liquid to the solid-phase extraction column used for the pretreatment of rice mycotoxins.

[0011] Furthermore, the stirring assembly also includes a rotating shaft, with the output end of the motor fixedly connected to the rotating shaft. Multiple fixing strips are fixedly connected to the end of the rotating shaft near the motor, and these fixing strips are fixedly connected to the wall of the mixing cup. Multiple stirring strips for stirring the rice mycotoxins and the mixture are fixedly connected to the outer surface of the rotating shaft. The multiple stirring strips fixedly connected to the outer surface of the rotating shaft allow for more thorough mixing of the rice mycotoxins and the mixture.

[0012] Furthermore, the outer shell is provided with an upper sieve plate, a packing layer, and a lower sieve plate arranged sequentially from top to bottom. The upper sieve plate, packing layer, and lower sieve plate are used for the extraction of the mixed liquid. The outer shell has an outlet for liquid outflow at the end away from the mixing component, which improves the efficiency of the solid phase extraction column for liquid extraction in the pretreatment of rice mycotoxins. Beneficial effects

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention improves the quality of liquid extraction by creating a notch in the middle of a solid-phase extraction column and providing an opening and closing component that can move at the notch. When the opening and closing component swings to the bottom of the mixing cup, the liquid in the mixing cup cannot flow out. This allows the solid-phase extraction column used for the pretreatment of rice mycotoxins to ensure that the rice mycotoxins and the mixed liquid are fully mixed before extraction, thus improving the quality of liquid extraction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a solid-phase extraction column for the pretreatment of rice mycotoxins according to the present invention;

[0016] Figure 2 This is a front view schematic diagram of a solid-phase extraction column for pretreatment of rice mycotoxins according to the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the column body of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the hybrid component of this utility model;

[0019] Figure 5 This is a partially enlarged three-dimensional structural diagram of A of this utility model;

[0020] Figure 6 This is a three-dimensional structural diagram of the opening and closing component of this utility model.

[0021] In the diagram: 1. Column body; 2. Mixing assembly; 3. Opening and closing assembly; 11. Outer shell; 12. Upper sieve plate; 13. Packing layer; 14. Notch; 15. Lower sieve plate; 16. Liquid outlet; 21. Fixing frame; 22. Motor; 23. Control panel; 24. Funnel; 25. Drain pipe; 26. Stirring assembly; 27. Straight bar; 261. Mixing cup; 262. Fixing bar; 263. Rotating shaft; 264. Stirring bar; 265. Liquid outlet; 31. Turntable; 32. Barrier plate; 33. T-shaped component; 34. Telescopic shaft; 35. Spring. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0023] Example

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6This application provides a further detailed description. A solid-phase extraction column for the pretreatment of rice mycotoxins includes a column body 1 for extracting liquid. A mixing assembly 2 for mixing rice mycotoxins and a mixed liquid is detachably mounted on the top of the column body 1. An opening and closing assembly 3 is rotatably connected to the lower end of the mixing assembly 2. The column body 1 includes a shell 11 with a notch 14 inside for the opening and closing assembly 3 to move. The mixing assembly 2 includes a fixing frame 21 located above the column body 1. A stirring assembly 26 is rotatably mounted at the center below the fixing frame 21. The stirring assembly 26 includes a mixing cup 261 for receiving liquid, with a drain outlet 265 at the center of the bottom of the mixing cup 261. The opening and closing assembly 3 is used to control the liquid falling from the drain outlet 265. A straight bar 27 is fixedly connected to one side of the bottom of the fixing frame 21. A T-shaped groove is opened at the end of the straight bar 27 away from the fixing frame 21. The opening and closing assembly 3 includes a T-shaped member 33, which is rotatably located in the T-shaped groove at the bottom of the straight bar 27. A turntable 31 is fixedly installed at the end of the T-shaped member 33 away from the straight bar 27. The top of the turntable 31 is on the same horizontal plane as the top of the notch 14 of the outer shell 11, and the top of the turntable 31 is on the same horizontal plane as the bottom of the drain outlet 265. A cylindrical groove is opened at the center of the turntable 31. A telescopic shaft 34 is fixedly installed in the cylindrical groove of the turntable 31. The top of the telescopic shaft 34 is fixedly... A baffle plate 32 with an inclined surface is fixedly installed. A spring 35 is provided on the outside of the telescopic shaft 34, located below the baffle plate 32. The spring 35 is used to apply a restoring force to the baffle plate 32. A rectangular groove is opened at the end of the fixed frame 21 away from the coupling assembly 3. A control plate 23 is bolted to the fixed frame 21 in the rectangular groove. A motor 22 is fixedly installed below the top plate of the fixed frame 21. The control box of the motor 22 is electrically connected to the control plate 23. Multiple drainage tubes 25 for guiding the liquid flow are fixedly connected above the bottom plate of the fixed frame 21. The drainage tubes 25 penetrate the bottom plate of the fixed frame 21 and are located inside the mixing cup 261. The end of the drainage tube 25 away from the mixing cup 261 is... The funnel 24 is fixedly connected. The stirring assembly 26 also includes a rotating shaft 263. The output end of the motor 22 is fixedly connected to the rotating shaft 263. Multiple fixing strips 262 are fixedly connected to the end of the rotating shaft 263 near the motor 22. The fixing strips 262 are fixedly connected to the wall of the mixing cup 261. Multiple stirring strips 264 for stirring rice mycotoxins and the mixed liquid are fixedly connected to the outer surface of the rotating shaft 263. The inner shell 11 is provided with an upper sieve plate 12, a packing layer 13 and a lower sieve plate 15 from top to bottom. The upper sieve plate 12, the packing layer 13 and the lower sieve plate 15 are used for the extraction of the mixed liquid. The outer shell 11 is provided with an outlet 16 for the liquid to flow out at the end away from the mixing assembly 2.

[0025] Since the top of the turntable 31 is on the same horizontal plane as the top of the notch 14 of the outer casing 11, and the top of the turntable 31 is on the same horizontal plane as the bottom of the drain outlet 265, the opening and closing component 3 can freely enter and exit within the notch 14 of the outer casing 11. Furthermore, since the top of the baffle plate 32 has an inclined surface, the rotating turntable 31 can slowly carry the baffle plate 32 into the drain outlet 265 and block the bottom of the drain outlet 265, preventing the liquid from flowing downwards.

[0026] The control board 23 is a microcontroller chip board, and the control board 23 is electrically connected to the control box of the motor 22. A button for controlling the motor 22 is provided on the top of the control board 23. Therefore, the user can directly control the operation of the motor 22 through the button on the top of the control board 23. The microcontroller chip board is a common model on the market, so this utility model will not be described in detail.

[0027] Since the funnel 24 and the drainage tube 25 are connected in a continuous manner, and the drainage tube 25 passes through the bottom plate of the fixing frame 21 and is located above the mixing cup 261, when the user adds rice fungal toxin liquid or mixture into the funnel 24, the liquid will be added into the mixing cup 261 along the drainage tube 25.

[0028] Since the telescopic shaft 34 is fixedly installed at the bottom of the turntable 31 and the top of the turntable 31 is fixedly installed at the bottom of the barrier plate 32, and a spring 35 is provided below the barrier plate 32, when the barrier plate 32 is squeezed, the spring 35 deforms and the telescopic shaft 34 contracts. When the pressure is removed, the telescopic shaft 34 will extend the barrier plate 32 upward through the spring 35.

[0029] Since the bottom of the straight bar 27 has a T-shaped groove, and the T-shaped part 33 and the T-shaped groove at the bottom of the straight bar 27 are compatible with each other, the turntable 31 can rotate directly around the straight bar 27 in parallel. The rotating turntable 31 can rotate the center of the barrier plate 32 to the center position of the liquid discharge port 265.

[0030] The working principle of this utility model is explained below: Unless otherwise specified, all mechanical structures inside the solid-phase extraction column for pretreatment of rice mycotoxins are threaded. To allow for a more intuitive observation of the technical features, bolt connections are appropriately concealed in the figure. Before use, the barrier plate 32 is positioned directly below the liquid outlet 265, preventing liquid from falling through the outlet 265. The user places the rice mycotoxins to be extracted and the mixture into the mixing cup 261 through the funnel 24. The liquid falls directly into the mixing cup 261. The user then starts the motor 22 via the control board 23. The started motor 22 directly drives the rotating shaft 263 and the mixing cup 261 into the mixing cup. The mixing cup 261 is rotated, and the liquid inside is stirred by the stirring bar 264. After the liquid inside the mixing cup 261 is fully stirred, the user swings the turntable 31 by the T-shaped part 33, so that the blocking plate 32 does not block the bottom of the liquid outlet 265. Then, the fully stirred liquid will fall into the upper sieve plate 12, the packing layer 13 and the lower sieve plate 15 through the liquid outlet 265 for extraction. Finally, it is sent out through the liquid outlet 16. In this way, when using the solid phase extraction column for the pretreatment of rice mycotoxins, the user can wait until the liquid inside the mixing cup 261 is fully stirred before performing the corresponding extraction operation, which improves the fullness of mixing of rice mycotoxins and the mixed liquid when using the solid phase extraction column for the pretreatment of rice mycotoxins.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A solid-phase extraction column for the pretreatment of rice mycotoxins, characterized in that, The system includes a column body (1) for extracting liquid. A mixing component (2) for mixing rice mycotoxins and a mixed liquid is detachably installed on the top of the column body (1). An opening and closing component (3) is rotatably connected to the lower end of the mixing component (2). The column body (1) includes a shell (11) with a notch (14) for the opening and closing component (3) to move inside the shell (11). The mixing component (2) includes a fixing frame (21) located above the column body (1). A stirring component (26) is rotatably arranged at the center position below the fixing frame (21). The stirring component (26) includes a mixing cup (261) for receiving liquid. A liquid outlet (265) is provided at the center position at the bottom of the mixing cup (261). The swinging opening and closing component (3) is used to control the liquid from falling into the liquid outlet (265).

2. The solid-phase extraction column for pretreatment of rice mycotoxins according to claim 1, characterized in that: A straight bar (27) is fixedly connected to one side of the bottom of the fixed frame (21). A T-shaped groove is provided at the end of the straight bar (27) away from the fixed frame (21). The opening and closing component (3) includes a T-shaped piece (33). The T-shaped piece (33) rotates in the T-shaped groove at the bottom of the straight bar (27). A turntable (31) is fixedly installed at the end of the T-shaped piece (33) away from the straight bar (27). The top of the turntable (31) is on the same horizontal plane as the top of the notch (14) of the outer shell (11). The top of the turntable (31) is on the same horizontal plane as the bottom of the liquid outlet (265).

3. A solid-phase extraction column for pretreatment of rice mycotoxins according to claim 2, characterized in that: A cylindrical groove is provided at the center of the turntable (31). A telescopic shaft (34) is fixedly installed in the cylindrical groove of the turntable (31). A barrier plate (32) with an inclined surface is fixedly installed on the top of the telescopic shaft (34). A spring (35) is provided on the outside of the telescopic shaft (34). The spring (35) is located below the barrier plate (32). The spring (35) is used to apply a rebound force to push the barrier plate (32).

4. A solid-phase extraction column for pretreatment of rice mycotoxins according to claim 1, characterized in that: The fixed frame (21) has a rectangular groove at one end away from the assembly (3). The fixed frame (21) has a control board (23) bolted in the rectangular groove. The fixed frame (21) has a motor (22) fixedly installed below the top plate of the fixed frame (21). The control box of the motor (22) is electrically connected to the control board (23).

5. A solid-phase extraction column for pretreatment of rice mycotoxins according to claim 1, characterized in that: Multiple drainage tubes (25) for guiding the flow of liquid are fixedly connected above the base plate of the fixed frame (21). The drainage tubes (25) penetrate the base plate of the fixed frame (21) and are located inside the mixing cup (261). A funnel (24) is fixedly connected to one end of the drainage tube (25) away from the mixing cup (261).

6. A solid-phase extraction column for pretreatment of rice mycotoxins according to claim 4, characterized in that: The stirring assembly (26) also includes a rotating shaft (263), the output end of the motor (22) is fixedly connected to the rotating shaft (263), a plurality of fixing strips (262) are fixedly connected to one end of the rotating shaft (263) near the motor (22), the fixing strips (262) are fixedly connected to the wall of the mixing cup (261), and a plurality of stirring strips (264) for stirring rice mycotoxins and the mixture are fixedly connected to the outer surface of the rotating shaft (263).

7. A solid-phase extraction column for pretreatment of rice mycotoxins according to claim 1, characterized in that: The outer shell (11) is provided with an upper sieve plate (12), a packing layer (13) and a lower sieve plate (15) arranged from top to bottom. The upper sieve plate (12), the packing layer (13) and the lower sieve plate (15) are used for the extraction of the mixed liquid. The outer shell (11) has an outlet (16) for liquid to flow out at the end away from the mixing component (2).

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