Sample purification mixing mechanism for food testing

Abstract

The application relates to the technical field of sample purification treatment, in particular to a sample purification mixing mechanism for food detection, which comprises an electrolysis box, a purification box body, a water inlet pipe, a precision filter plate, a filter plate cleaning assembly and a stirring assembly, the electrolysis box is connected to the top of the purification box body, the water inlet pipe is fixedly connected to the outer side of the purification box body, the precision filter plate is connected to the bottom of the purification box body, and the filter plate cleaning assembly is arranged at the upper end of the precision filter plate. The sample purification mixing mechanism for food detection can remove harmful substances in liquid food and generate precipitates through oxidation reaction and reduction reaction of the liquid food with the single-polarity plates connected to the bottom of the electrolysis box and the addition of a precipitant, and the oriented flowability of the liquid food can be disturbed under the gear transmission, the guide shaft can drive the stirring blades on the surface to rotate reversely along the rotation direction of the driving shaft, so that the electrolytic purification rate is accelerated.

Description

Technical Field

[0001] This application relates to the field of sample purification and processing technology, and in particular to a sample purification and mixing mechanism for food testing. Background Technology

[0002] Food contaminant residue analysis is an analytical technique for trace components in complex mixtures. Pretreatment is the most time-consuming and labor-intensive part of food testing. The development trend of pesticide chemical contaminant residue detection technology is to use less sample volume, less reagent consumption, and faster analysis speed. Traditional methods generally use a single centrifuge tube for purification to achieve contaminant purification.

[0003] For example, CN219495865U discloses a batch purification device for food contaminants. The sample extract is added to a sample receiving tube. The device is then shaken for purification. After purification, the purification plate is inverted, and the plug is removed or the easily breakable part is broken off. A filter is then connected, and the purification plate is placed upright again. The other end of the filter is inserted into a sample bottle placed on a 5x10 sample plate. The cover is removed, allowing the purified sample to be retained by the filter into the sample bottle. If sample retention is incomplete, a sealing cap with a disengagement structure is used to seal the connection with the plugging hole. Then, the piston rod of the injection syringe is pushed to apply air pressure to the sample receiving tube, discharging the sample from the sample receiving tube into the sample bottle.

[0004] Regarding the aforementioned technologies, the inventors believe that the following technical defects exist and need to be improved: Traditional devices generate a large amount of precipitate during the reaction process, which in turn clogs the water outlet and requires regular cleaning, thus increasing labor costs. Utility Model Content

[0005] This application provides a sample purification and mixing mechanism for food testing to improve the following technical problem: traditional devices generate a large amount of precipitate during the reaction process, which in turn clogs the water outlet and requires regular cleaning, thus increasing labor costs.

[0006] This application provides a sample purification and mixing mechanism for food testing, which adopts the following technical solution:

[0007] A sample purification and mixing mechanism for food testing includes an electrolysis tank, a purification chamber, a water inlet pipe, a precision filter plate, a filter plate cleaning assembly, and a stirring assembly. The electrolysis tank is connected to the top of the purification chamber, the water inlet pipe is fixedly connected to the outside of the purification chamber, the precision filter plate is connected to the bottom of the purification chamber, and the filter plate cleaning assembly is disposed at the upper end of the precision filter plate.

[0008] The anode rod of the electrolysis tank extends into the purification chamber and undergoes an oxidation reaction with the liquid food, while the anode rod also extends into the purification chamber and undergoes a reduction reaction with the liquid food. The water inlet pipe is used to pour the liquid food sample into the purification chamber. The precision filter plate is used to filter internal impurities in the liquid food. The filter plate cleaning component acts on the surface of the precision filter plate and cleans the micropores inside the precision filter plate. The stirring component is used to disrupt the directional flow of the liquid food and accelerate electrolytic purification.

[0009] In one feasible technical solution of this application, the filter plate cleaning assembly includes a hydraulic cylinder, a push rod, a positioning plate, and a stainless steel brush holder. The hydraulic cylinder is connected to the outside of the purification chamber. One end of the push rod is fixedly connected to the piston end of the hydraulic cylinder. The positioning plate is fixedly connected to the outside of the push rod. The stainless steel brush holder is slidably sleeved on the bottom of the positioning plate.

[0010] In one feasible technical solution of this application, several sets of limiting springs are also fixedly connected to the opposite sides of the positioning plate and the stainless steel brush holder.

[0011] In one feasible technical solution of this application, a stirring assembly is further provided on the inner side of the purification chamber. The stirring assembly includes a stepper motor, a drive shaft, a guide shaft, and stirring blades. The stepper motor is connected to the outer side of the purification chamber. One end of the drive shaft is fixedly connected to the motor shaft of the stepper motor through a coupling. The guide shaft is rotatably connected to the inner side of the purification chamber. The stirring blades are arranged in a ring on the outer walls of the drive shaft and the guide shaft.

[0012] In one feasible technical solution of this application, the opposite sides of the drive shaft and the guide shaft are further meshed with a limiting gear.

[0013] In one feasible technical solution of this application, a sealing protective plate is also provided on the outside of the precision filter plate, and the two sides of the sealing protective plate are connected to one side of the purification box.

[0014] In one feasible technical solution of this application, a return water pipe, a water pump and a one-way valve are also provided on the outside of the purification box. The return water pipe passes through the inside of the purification box and is tightly fitted to the inner wall of the purification box. The water pump is installed on the outside of the return water pipe and the one-way valve is installed on the outside of the return water pipe.

[0015] In one feasible technical solution of this application, the return water pipe is provided in two sets, and the two sets of return water pipes are symmetrically arranged on both sides of the top of the purification box.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] Under the action of the electrolysis box, the unipolar plates connected to the bottom of the electrolysis box undergo oxidation and reduction reactions with the liquid food respectively. After adding the precipitant, harmful substances in the liquid food can be removed and precipitates are generated. Under gear transmission, the guide shaft can drive the stirring blades on its surface to rotate in the opposite direction of the drive shaft, thereby disrupting the directional flow of the liquid food and accelerating the electrolysis purification rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the sample purification and mixing mechanism for food testing according to an embodiment of this application.

[0020] Figure 2 This is a cross-sectional view of the interior of the purification chamber in an embodiment of this application.

[0021] Figure 3 This is a cross-sectional view of the back of the purification chamber in an embodiment of this application.

[0022] Figure 4 This is a diagram showing the unfolded effect of the limiting spring in this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Electrolysis tank; 2. Purification chamber; 3. Water inlet pipe; 4. Precision filter plate;

[0025] 5. Filter plate cleaning assembly; 51. Hydraulic cylinder; 52. Push rod; 53. Positioning plate; 54. Stainless steel brush holder;

[0026] 6. Stirring assembly; 61. Stepper motor; 62. Drive shaft; 63. Guide shaft; 64. Stirring blades;

[0027] 7. Limiting spring; 8. Limiting gear; 9. Sealing and protective plate; 10. Return water pipe; 11. Water pump; 12. Check valve. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 this application.

[0031] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a sample purification and mixing mechanism for food testing. (Refer to...) Figure 1-4 The sample purification and mixing mechanism for food testing includes an electrolysis box 1, a purification box 2, a water inlet pipe 3, a precision filter plate 4, a filter plate cleaning assembly 5, and a stirring assembly 6. The electrolysis box 1 is connected to the top of the purification box 2, the water inlet pipe 3 is fixedly connected to the outside of the purification box 2, the precision filter plate 4 is connected to the bottom of the purification box 2, and the filter plate cleaning assembly 5 is located at the top of the precision filter plate 4.

[0034] The anode rod of the electrolysis tank 1 extends into the purification tank 2 and undergoes an oxidation reaction with the liquid food; the anode rod of the electrolysis tank 1 extends into the purification tank 2 and undergoes a reduction reaction with the liquid food; the water inlet pipe 3 is used to pour the liquid food sample into the purification tank 2; the precision filter plate 4 is used to filter the internal impurities of the liquid food; the filter plate cleaning component 5 acts on the surface of the precision filter plate 4 and cleans the micropores of the precision filter plate 4; and the stirring component 6 is used to disrupt the directional flow of the liquid food and accelerate the electrolytic purification.

[0035] Among them, a sealing and protective plate 9 is also provided on the outside of the precision filter plate 4. The two sides of the sealing and protective plate 9 are connected to one side of the purification box 2. The outside of the purification box 2 is also provided with a return water pipe 10, a water pump 11 and a one-way valve 12. The return water pipe 10 runs through the inside of the purification box 2 and is tightly fitted to the inner wall of the purification box 2. The water pump 11 is installed on the outside of the return water pipe 10 and the one-way valve 12 is installed on the outside of the return water pipe 10. There are two sets of return water pipes 10, and the two sets of return water pipes 10 are symmetrically arranged on the top two sides of the purification box 2.

[0036] In this embodiment, the filter plate cleaning assembly 5 includes a hydraulic cylinder 51, a push rod 52, a positioning plate 53, and a stainless steel brush holder 54. The hydraulic cylinder 51 is connected to the outside of the purification chamber 2. One end of the push rod 52 is fixedly connected to the piston end of the hydraulic cylinder 51. The positioning plate 53 is fixedly connected to the outside of the push rod 52. The stainless steel brush holder 54 is slidably sleeved on the bottom of the positioning plate 53. Several sets of limiting springs 7 are also fixedly connected to the opposite sides of the positioning plate 53 and the stainless steel brush holder 54. The filter plate cleaning assembly 5 designed above has a simple structure, stable operation, and can achieve good cleaning effect on the precision filter plate 4.

[0037] In this embodiment, a stirring assembly 6 is also provided inside the purification chamber 2. The stirring assembly 6 includes a stepper motor 61, a drive shaft 62, a guide shaft 63, and stirring blades 64. The stepper motor 61 is connected to the outside of the purification chamber 2. One end of the drive shaft 62 is fixedly connected to the motor shaft of the stepper motor 61 via a coupling. The guide shaft 63 is rotatably connected to the inside of the purification chamber 2. The stirring blades 64 are arranged in a ring array on the outer walls of the drive shaft 62 and the guide shaft 63. Limiting gears 8 are also meshed on opposite sides of the drive shaft 62 and the guide shaft 63. The stirring assembly 6 designed above has a simple structure, stable operation, and good stirring effect on liquid food, which is conducive to promoting the full mixing of liquid food and completing oxidation and reduction reactions.

[0038] The general process of using the food testing sample purification and mixing mechanism in this embodiment is as follows:

[0039] Liquid food can be introduced into the purification chamber 2 via an external pipe. Under the action of the electrolysis chamber 1, the unipolar plates connected to the bottom of the electrolysis chamber 1 undergo oxidation and reduction reactions with the liquid food, thereby removing harmful substances from the liquid food and generating precipitates. The precipitates fall onto the filter screen surface of the precision filter plate 4 under gravity. During this process, the external stepper motor 61 can be started simultaneously. Its motor shaft drives the drive shaft 62 to rotate. Under the gear transmission of the two sets of limit gears 8, the guide shaft 63 can drive the stirring blades 64 on its surface to rotate in the opposite direction of the rotation of the drive shaft 62, thereby disrupting the directional flow of water and accelerating the electrolytic purification rate. Then, the bottom discharge valve is opened, from The purified liquid food is separated from the sediment to prevent clogging and facilitate subsequent cleaning. During the cleaning process, the staff only needs to disassemble the connecting bolt between the outer sealing plate 9 and the purification chamber 2, and automatically start the outer hydraulic cylinder 51. The piston end of the cylinder pushes the push rod 52, which in turn pushes the positioning plate 53 and the bottom stainless steel brush seat 54 to brush back and forth on the mesh of the precision filter plate 4. Since the limiting spring 7 inside the positioning plate 53 is always compressed, the elasticity of the spring allows the bottom stainless steel brush seat 54 to continuously press against the surface of the precision filter plate 4. With the pushing effect of the hydraulic cylinder 51, the precision filter plate 4 is quickly cleaned, thereby reducing labor costs.

[0040] The beneficial technical effects of the food testing sample purification and mixing mechanism in this application are roughly as follows:

[0041] Under the action of electrolysis tank 1, the unipolar plates connected to the bottom of electrolysis tank 1 undergo oxidation and reduction reactions with the liquid food respectively. After adding precipitant, harmful substances in the liquid food can be removed and precipitates are generated. Under gear transmission, the guide shaft 63 can drive the stirring blades 64 on its surface to rotate in the opposite direction of the rotation of the drive shaft 62, thereby disrupting the directional flow of the liquid food, thereby accelerating the electrolytic purification rate and completing the mechanized cleaning effect. In addition, with the help of the water pump 11, the liquid food sample can be circulated back to prevent bottom sedimentation and improve the electrolytic purification effect.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sample purification and mixing mechanism for food testing, characterized in that: The device includes an electrolysis tank (1), a purification tank (2), a water inlet pipe (3), a precision filter plate (4), a filter plate cleaning assembly (5), and a stirring assembly (6). The electrolysis tank (1) is connected to the top of the purification tank (2), the water inlet pipe (3) is fixedly connected to the outside of the purification tank (2), the precision filter plate (4) is connected to the bottom of the purification tank (2), and the filter plate cleaning assembly (5) is located at the upper end of the precision filter plate (4). The anode rod of the electrolysis tank (1) extends into the purification tank (2) and undergoes an oxidation reaction with the liquid food, and the anode rod extends into the purification tank (2) and undergoes a reduction reaction with the liquid food. The water inlet pipe (3) is used to pour the liquid food sample into the purification tank (2). The precision filter plate (4) is used to filter the internal impurities of the liquid food. The filter plate cleaning component (5) acts on the surface of the precision filter plate (4) and cleans the micropores of the precision filter plate (4). The stirring component (6) is used to disrupt the directional flow of the liquid food and accelerate the electrolytic purification.

2. The sample purification and mixing mechanism for food testing according to claim 1, characterized in that: The filter plate cleaning assembly (5) includes a hydraulic cylinder (51), a push rod (52), a positioning plate (53), and a stainless steel brush holder (54). The hydraulic cylinder (51) is connected to the outside of the purification chamber (2). One end of the push rod (52) is fixedly connected to the piston end of the hydraulic cylinder (51). The positioning plate (53) is fixedly connected to the outside of the push rod (52). The stainless steel brush holder (54) is slidably sleeved on the bottom of the positioning plate (53).

3. The sample purification and mixing mechanism for food testing according to claim 2, characterized in that: Several sets of limiting springs (7) are also fixedly connected to the opposite sides of the positioning plate (53) and the stainless steel brush holder (54).

4. The sample purification and mixing mechanism for food testing according to claim 1, characterized in that: The inner side of the purification chamber (2) is also provided with a stirring assembly (6). The stirring assembly (6) includes a stepper motor (61), a drive shaft (62), a guide shaft (63), and stirring blades (64). The stepper motor (61) is connected to the outer side of the purification chamber (2). One end of the drive shaft (62) is fixedly connected to the motor shaft of the stepper motor (61) through a coupling. The guide shaft (63) is rotatably connected to the inner side of the purification chamber (2). The stirring blades (64) are arranged in a ring on the outer wall of the drive shaft (62) and the guide shaft (63).

5. The sample purification and mixing mechanism for food testing according to claim 4, characterized in that: The drive shaft (62) and the guide shaft (63) are also connected by a limit gear (8) on opposite sides.

6. The sample purification and mixing mechanism for food testing according to claim 1, characterized in that: A sealing and protective plate (9) is also provided on the outside of the precision filter plate (4), and the two sides of the sealing and protective plate (9) are connected to one side of the purification box (2).

7. The sample purification and mixing mechanism for food testing according to claim 6, characterized in that: The outside of the purification chamber (2) is also provided with a return water pipe (10), a water pump (11) and a one-way valve (12). The return water pipe (10) runs through the inside of the purification chamber (2) and fits tightly against the inner wall of the purification chamber (2). The water pump (11) is installed on the outside of the return water pipe (10), and the one-way valve (12) is installed on the outside of the return water pipe (10).

8. The sample purification and mixing mechanism for food testing according to claim 7, characterized in that: The return water pipe (10) is provided in two sets, and the two sets of return water pipe (10) are symmetrically arranged on both sides of the top of the purification box (2).

Images