Detection sampling device and process in neotame production

Abstract

The invention relates to the technical field of conveying, in particular to a detecting and sampling device and process in neotame production, comprising a middle plate, the lower surface of the middle plate is connected with a bottom plate through a lifting mechanism, a charging barrel is fixedly mounted in the middle of the upper surface of the middle plate, and a liquid outlet is fixedly embedded in the front end of the lower surface of the charging barrel; a connecting sleeve is fixedly arranged at the front edge of the upper surface of the middle plate, a rotating seat is rotationally embedded in the inner side of the connecting sleeve, a discharge pipe fixedly penetrates through the middle of the rotating seat, an upper end opening of the discharge pipe is communicated with a lower end opening of the liquid discharge opening through a hose, and a notch is formed in the lower rear surface of the rotating seat; according to the invention, cuvettes can be conveniently and quickly arranged and sampled, so that an operation table top is tidier, and the use of scattered tools is reduced; the problems of liquid dropping and liquid leakage at the port can be prevented, and the environment is clean and tidy; the device has good adaptability, can be used for guiding and sampling according to the shape of a cuvette, and brings convenience.

Description

Technical Field

[0001] The present invention relates to the field of transmission technology, and in particular to a detection sampling device and process in neotame production. Background Art

[0002] During the production process of neotame, ultraviolet spectrophotometry can be used to detect the concentration of neotame to ensure that the neotame content in the product meets the specified standards.

[0003] The UV spectrophotometer uses a cuvette to hold the sample solution. The cuvette's light transmittance and chemical stability in the UV region make it an indispensable sample container in UV spectrophotometry. When using a cuvette, ensure that the two light-transmitting surfaces are parallel and placed vertically in the cuvette holder to ensure that the incident light is perpendicular to the light-transmitting surfaces and avoid light reflection loss. At the same time, care should be taken to prevent the cuvette from mechanical damage or scratches.

[0004] During the process of sampling and loading the cuvette, the dropper port is prone to leakage, causing an untidy table environment; neotame powder is mixed with water in a measuring cup, and then sucked and dripped into the cuvette through a dropper. The whole process is inconvenient, and various glassware occupies multiple positions on the table. The repeated placement of glass rods and droppers during the process affects the sampling efficiency. In addition, since the cuvette is a relatively high tetrahedron, it is easy to be accidentally touched and tipped over when placed directly on the table, which is inconvenient. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a detection sampling device for neotame production.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a detection sampling device in neotame production, comprising a middle plate, the lower surface of the middle plate is connected to a bottom plate through a lifting mechanism, a barrel is fixedly installed in the middle of the upper surface of the middle plate, a discharge port is fixedly embedded at the front end of the lower surface of the barrel, a connecting sleeve is fixedly arranged at the front edge of the upper surface of the middle plate, a rotating seat is rotatably embedded in the inner side of the connecting sleeve, a discharge pipe is fixedly penetrated in the middle of the rotating seat, the upper end port of the discharge pipe is connected to the lower end port of the discharge port through a hose, a notch is opened on the lower rear surface of the rotating seat, the inner surface of the notch is connected to an extrusion plate through an elastic mechanism, and the extrusion plate is located behind the discharge pipe; When the cuvette moves forward, the port pushes the extrusion plate, which squeezes the lower end of the row tube, and continues to move forward so that the inner surface of the notch is subjected to thrust, thereby causing the row tube and the extrusion plate to be retracted inside the connecting sleeve; When the cuvette is moved backwards to be loaded, the rear edge of the inner surface of the notch is pushed, so that the rotating seat rotates and the row tube is moved out from the inner side of the connecting sleeve.

[0007] Preferably, the lifting mechanism includes a first threaded rod rotatably connected to the rear edge of the upper surface of the base plate, the upper end thread of the first threaded rod passes through the lower surface of the middle plate, the upper end of the first threaded rod is fixedly connected to a first swivel head, and side plates are fixedly connected to both sides of the upper surface of the base plate, and the two side plates respectively contact the two side edges of the middle plate.

[0008] Preferably, a bracket is fixedly connected between the upper surface of the middle plate and the lower surface of the barrel, a motor is fixedly installed on the lower surface of the barrel, a battery is fixedly installed on the upper surface of the middle plate and near the rear of the motor, the inner bottom surface of the barrel is rotatably connected to a central axis, a plurality of rotating blades are arranged in a circular array on the outer surface of the central axis, and the output shaft of the motor is fixedly connected to the lower end of the central axis.

[0009] Preferably, a connecting shaft is fixedly connected to one side of the rotating seat, and the connecting shaft is rotatably connected to the surface of one side of the connecting sleeve, a connecting column is fixedly connected to the other side of the rotating seat, and the other side surface of the connecting sleeve is fixedly connected to the limiting sleeve, the connecting column slides through the inner side of the limiting sleeve, and the inner bottom surface and the inner front surface of the limiting sleeve are respectively provided with limiting grooves, and the edges adjacent to the two limiting grooves are respectively provided with inclined guide surfaces, and a T-block is elastically inserted into the outer surface of the connecting column, and the lower end of the T-block is inserted into the inner side of the limiting groove.

[0010] Preferably, a guide groove is provided on the lower surface of the connecting column, the upper end of the T-block is slidably inserted into the inner side of the guide groove, a compression spring is provided on the inner side of the guide groove, and the lower end of the compression spring contacts the upper surface of the T-block.

[0011] Preferably, the elastic mechanism includes a slot opened on the inner surface of the notch, and T-shaped rods are fixedly connected to both sides of the front surface of the extrusion plate, and the front end of the T-shaped rod is slidably inserted into the inner side of the slot. A reset spring is arranged on the inner side of the slot, and the reset spring is located at the front end of the T-shaped rod.

[0012] Preferably, the lower surface of the barrel is fixedly connected to a connecting seat, which is fixedly sleeved on the outer surface of the discharge port, a flat plate is slidably inserted on the front surface of the connecting seat, a circular plate extends from the rear end of the flat plate, the rear end of the flat plate is slidably inserted into the front surface of the discharge port, and the circular plate is slidably embedded in the inner side of the discharge port.

[0013] Preferably, the lower surface of the middle plate is fixedly connected to a rear baffle, and the front surface of the rear baffle is slidably connected to two limit plates along the two side directions, an inclined guide plate extends from the front end of the limit plate, and a concave seat is fixedly connected to the lower surface of the middle plate and near the rear of the limit plate, and a second threaded rod is rotatably connected to the inner side of the concave seat, the second threaded rod threads through the surfaces of the two limit plates, and one end of the second threaded rod is fixedly connected to a second swivel head.

[0014] A sampling process for detecting neotame during production is carried out using a sampling device and comprises the following steps: S1. Place the produced neotame powder and water in a barrel and mix and stir; S2. Take the cuvette, place it against the front edge of the lower surface of the middle plate, and push it backwards, so that the rotating seat rotates and the row tube moves out from the inner side of the connecting sleeve; S3, the inner liquid enters the drain pipe through the hose and flows into the cuvette; S4. After sampling is completed, move forward to take out the cuvette, and place the cuvette and the standard solution in a UV spectrophotometer for testing to detect whether the neotame content in the product meets the specified standard.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can facilitate the rapid arrangement and sampling of the cuvette, making the operating table tidier and reducing the use of scattered tools; The present invention can prevent the problem of dripping and leakage at the port, which is conducive to a clean environment; The present invention has good adaptability and can be adapted to the shape of the cuvette to guide the placement of samples, thus bringing convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a detection sampling device in neotame production according to the present invention; Figure 2 It is a partial cross-sectional view of a detection sampling device in neotame production of the present invention; Figure 3 A detection sampling device for neotame production according to the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of a limit plate of a detection sampling device in neotame production according to the present invention; Figure 5 This is a cross-sectional view of the rotating seat of a detection sampling device in neotame production of the present invention; Figure 6 This is a schematic diagram of a rotating seat of a detection sampling device in neotame production of the present invention; Figure 7 A detection sampling device for neotame production according to the present invention Figure 6 Enlarged view of point B in the middle; Figure 8 It is a partial cross-sectional view of a rotating seat of a detection sampling device in neotame production of the present invention; Fig. 9 This is a schematic diagram of a connection seat of a detection sampling device in neotame production of the present invention; Fig.10 This is a state diagram of a cuvette sampling device for detecting and sampling in neotame production of the present invention; Fig.11The state of the cuvette of the sampling device for detecting neotame production of the present invention when it moves forward Figure 1 ; Fig.12 The state of the cuvette of the sampling device for detecting neotame production of the present invention when it moves forward Figure 2 .

[0017] 1. Middle plate; 2. Bottom plate; 3. Side plate; 4. First threaded rod; 5. First rotary head; 6. Cylinder; 7. Middle axis; 8. Rotating blade; 9. Bracket; 10. Motor; 11. Battery; 12. Drain port; 13. Connecting seat; 14. Flat plate; 15. Round plate; 16. Hose; 17. Rotating seat; 18. Drain pipe; 19. Connecting sleeve; 20. Connecting shaft; 21. Limiting sleeve; 22. Connecting column; 23. Limiting groove; 24. Oblique guide surface; 25. T-block; 26. Guide groove; 27. Compression spring; 28. Missing groove; 29. ​​Extrusion plate; 30. T-rod; 31. Slot; 32. Reset spring; 33. Limiting plate; 34. Oblique guide plate; 35. Rear baffle; 36. Concave seat; 37. Second threaded rod; 38. Second rotary head; 39. Cuvette. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] like Figure 1-Figure 12 The present invention shows a detection sampling device for neotame production, comprising a middle plate 1, the lower surface of the middle plate 1 is connected to a bottom plate 2 through a lifting mechanism, a barrel 6 is fixedly installed in the middle of the upper surface of the middle plate 1, a discharge port 12 is fixedly embedded at the front end of the lower surface of the barrel 6, a connecting sleeve 19 is fixedly provided at the front edge of the upper surface of the middle plate 1, a rotating seat 17 is rotatably embedded inside the connecting sleeve 19, a discharge pipe 18 is fixedly penetrated in the middle of the rotating seat 17, the upper end port of the discharge pipe 18 is connected to the lower end port of the discharge port 12 through a hose 16, a notch 28 is provided on the lower rear surface of the rotating seat 17, the inner surface of the notch 28 is connected to a pressing plate 29 through an elastic mechanism, and the pressing plate 29 is located behind the discharge pipe 18; When the cuvette 39 moves forward, the port pushes the extrusion plate 29, which squeezes the lower end of the row tube 18, and continues to move forward so that the inner surface of the notch 28 is pushed, thereby causing the row tube 18 and the extrusion plate 29 to be retracted inside the connecting sleeve 19; When the cuvette 39 is moved backwards to be installed, it pushes the rear edge of the inner surface of the notch 28 , so that the rotating seat 17 rotates and the discharge tube 18 moves out from the inner side of the connecting sleeve 19 .

[0020] The lifting mechanism includes a first threaded rod 4 rotatably connected to the rear edge of the upper surface of the bottom plate 2, the upper end of the first threaded rod 4 is threadedly penetrated through the lower surface of the middle plate 1, the upper end of the first threaded rod 4 is fixedly connected to a first screw head 5, and the two sides of the upper surface of the bottom plate 2 are respectively fixedly connected to the side plates 3, and the two side plates 3 are respectively in contact with the two side edges of the middle plate 1. The user rotates the first screw head 5 to rotate the first threaded rod 4, thereby making the bottom plate 2 close to or away from the middle plate 1 to adapt to the height of the cuvette 39.

[0021] A bracket 9 is fixedly connected between the upper surface of the middle plate 1 and the lower surface of the barrel 6, a motor 10 is fixedly installed on the lower surface of the barrel 6, a battery 11 is fixedly installed on the upper surface of the middle plate 1 and near the rear of the motor 10, the inner bottom surface of the barrel 6 is rotatably connected to the central axis 7, a plurality of rotating blades 8 are arranged in a circular array on the outer surface of the central axis 7, and the output shaft of the motor 10 is fixedly connected to the lower end of the central axis 7. The battery 11 can provide power for the motor 10. When the motor 10 is running, the central axis 7 rotates, and then the rotating blades 8 rotate, stirring the liquid while generating a pushing force from below to help the liquid be discharged from the discharge port 12.

[0022] A connecting shaft 20 is fixedly connected to one side of the rotating seat 17, and the connecting shaft 20 is rotatably connected to the surface of one side of the connecting sleeve 19. A connecting column 22 is fixedly connected to the other side of the rotating seat 17, and a limiting sleeve 21 is fixedly connected to the other side surface of the connecting sleeve 19. The connecting column 22 slides through the inner side of the limiting sleeve 21, and the inner bottom surface and the inner front surface of the limiting sleeve 21 are respectively provided with limiting grooves 23, and the edges adjacent to the two limiting grooves 23 are respectively provided with inclined guide surfaces 24. A T-block 25 is elastically inserted into the outer surface of the connecting column 22, and the lower end of the T-block 25 is inserted into the inner side of the limiting groove 23. The design of the inclined guide surface 24 can limit the rotation range of the connecting column 22 relative to the limiting sleeve 21.

[0023] A guide groove 26 is provided on the lower surface of the connecting column 22, and the upper end of the T-shaped block 25 is slidably inserted into the inner side of the guide groove 26. A compression spring 27 is provided inside the guide groove 26, and the lower end of the compression spring 27 contacts the upper surface of the T-shaped block 25. When the T-shaped block 25 is pushed by the inclined guide surface 24, the T-shaped block 25 will slide into the inner side of the guide groove 26.

[0024] The elastic mechanism includes a slot 31 formed on the inner surface of the notch 28, and T-shaped rods 30 are fixedly connected to both sides of the front surface of the squeezing plate 29, and the front end of the T-shaped rod 30 is slidably inserted into the inner side of the slot 31. A return spring 32 is provided on the inner side of the slot 31, and the return spring 32 is located at the front end of the T-shaped rod 30. Obviously, the two T-shaped rods 30 are respectively located on both sides of the drain pipe 18, and when the squeezing plate 29 moves forward, the port of the drain pipe 18 can be squeezed to discharge the residual liquid at the port, which helps to keep the surrounding operating environment clean.

[0025] The lower surface of the barrel 6 is fixedly connected with a connection seat 13, which is fixedly sleeved on the outer surface of the discharge port 12. A flat plate 14 is slidably inserted on the front surface of the connection seat 13, and a circular plate 15 extends from the rear end of the flat plate 14. The rear end of the flat plate 14 is slidably inserted into the front surface of the discharge port 12, and the circular plate 15 is slidably embedded in the inner side of the discharge port 12. This part of the design plays a role in flexibly controlling the discharge or blocking of the discharge port 12. The lower surface of the middle plate 1 is fixedly connected with a rear baffle 35, and the front surface of the rear baffle 35 is slidably connected with two limit plates 33 along the two sides, and an oblique guide plate 34 extends from the front end of the limit plate 33. A concave seat 36 is fixedly connected to the lower surface of the middle plate 1 and near the rear of the limit plate 33. The inner side of the concave seat 36 is rotatably connected with a second threaded rod 37, which is threaded through the surfaces of the two limit plates 33, and one end of the second threaded rod 37 is fixedly connected with a second screw head 38. The user rotates the second screw head 38 to rotate the second threaded rod 37, thereby causing the two limit plates 33 to move closer to or away from each other, so as to adapt to the width of the cuvette 39 for use, and the oblique guide plate 34 plays a guiding role, which can promote the cuvette 39 to be smoothly inserted between the two limit plates 33.

[0026] A sampling process for detecting neotame during production is carried out using the above-mentioned sampling device, comprising the following steps: S1, placing the produced neotame powder and water in a barrel 6 and mixing; S2, take the cuvette 39, stick it to the front edge of the lower surface of the middle plate 1, and push it backward, so that the rotating seat 17 rotates and the drain pipe 18 moves out from the inner side of the connecting sleeve 19; S3, the inner liquid enters the drain pipe 18 through the hose 16 and flows into the cuvette 39; S4. After the sampling is completed, the cuvette 39 is taken out and placed in a UV spectrophotometer with the standard solution for testing to determine whether the neotame content in the product meets the specified standard.

[0027] When the user is taking samples, the upper end of the cuvette 39 is in contact with the lower surface of the middle plate 1 and then moves backward. The two limit plates 33 play a role in guiding the insertion of the cuvette 39. When the cuvette 39 moves backward, it pushes the rear edge of the inner surface of the notch 28, causing the rotating seat 17 to rotate and the drain tube 18 to move out from the inner side of the connecting sleeve 19. When the cuvette 39 is pushed until it is blocked by the rear baffle 35, the sampling operation can be performed.

[0028] After the plate 14 is moved forward for a certain distance, the motor 10 is operated to rotate the central axis 7 and the rotating blade 8 to fully mix the neotame inside with the water. At the same time, the inclined rotating blade 8 generates a downward pushing force on the water flow, which helps the liquid to enter the drain pipe 18 through the hose 16 and then flow into the cuvette 39. After the sampling is completed, the plate 14 is moved back to block the discharge port 12, and then the cuvette 39 is moved forward. When moving forward, the port pushes the squeezing plate 29 to squeeze the lower end of the drain pipe 18. The continuous forward movement causes the inner surface of the notch 28 to be pushed, so that the drain pipe 18 and the squeezing plate 29 are retracted on the inner side of the connecting sleeve 19. In this process, the squeezing of the squeezing plate 29 can squeeze out the residual liquid at the port of the drain pipe 18, and the drain pipe 18 and the squeezing plate 29 are retracted on the inner side of the connecting sleeve 19 to effectively prevent leakage, thereby ensuring a clean environment after sampling and having the function of automatically cleaning the port liquid.

[0029] Through the setting of two limit grooves 23, corresponding to the two stop positions when the connecting column 22 rotates, the design of two inclined guide surfaces 24 allows the connecting column 22 to rotate when the pushing force of the port of the cuvette 39 acts on the notch 28. The end of the T-block 25 contacts the inclined guide surface 24, which will squeeze the reset spring 32 and retract it into the inner side of the guide groove 26 to ensure that it does not interfere with the rotation of the connecting column 22.

[0030] By rotating the second threaded rod 37, the two limit plates 33 are moved closer to or farther away from each other to adapt to the width of the cuvette 39 and ensure guided insertion. By rotating the first threaded rod 4, the bottom plate 2 can be made relatively closer to or farther away from the middle plate 1, thereby ensuring that when the cuvette 39 is inserted, the upper and lower ends respectively contact the surfaces of the middle plate 1 and the bottom plate 2 to ensure stable insertion.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A sampling device for detecting neotame during production, comprising a middle plate (1), characterized in that: The lower surface of the middle plate (1) is connected to the bottom plate (2) via a lifting mechanism, a barrel (6) is fixedly installed in the middle of the upper surface of the middle plate (1), a liquid discharge port (12) is fixedly embedded at the front end of the lower surface of the barrel (6), a connecting sleeve (19) is fixedly arranged at the front edge of the upper surface of the middle plate (1), a rotating seat (17) is rotatably embedded inside the connecting sleeve (19), a discharge pipe (18) is fixedly penetrated in the middle of the rotating seat (17), an upper end port of the discharge pipe (18) and a lower end port of the liquid discharge port (12) are connected via a hose (16), a notch (28) is provided on the lower rear surface of the rotating seat (17), an inner surface of the notch (28) is connected to an extrusion plate (29) via an elastic mechanism, and the extrusion plate (29) is located behind the discharge pipe (18); When the cuvette (39) moves forward, the port pushes the extrusion plate (29), thereby squeezing the lower end of the row tube (18), and continues to move forward so that the inner surface of the notch (28) is subjected to thrust, thereby causing the row tube (18) and the extrusion plate (29) to be retracted inside the connecting sleeve (19); When the cuvette (39) is moved backwards and loaded, it pushes the rear edge of the inner surface of the notch (28), causing the rotating seat (17) to rotate and the row tube (18) to move out from the inner side of the connecting sleeve (19).

2. A neotame production detection sampling device according to claim 1, characterized in that: The lifting mechanism comprises a first threaded rod (4) rotatably connected to the rear edge of the upper surface of the bottom plate (2), the upper end of the first threaded rod (4) having a thread passing through the lower surface of the middle plate (1), the upper end of the first threaded rod (4) being fixedly connected to a first swivel head (5), and the upper surfaces of the bottom plate (2) being fixedly connected to side plates (3) on both sides, respectively, and the two side plates (3) respectively contacting the two side edges of the middle plate (1).

3. A neotame production detection sampling device according to claim 1, characterized in that: A bracket (9) is fixedly connected between the upper surface of the middle plate (1) and the lower surface of the barrel (6); a motor (10) is fixedly mounted on the lower surface of the barrel (6); a storage battery (11) is fixedly mounted on the upper surface of the middle plate (1) and close to the rear of the motor (10); a middle shaft (7) is rotatably connected to the inner bottom surface of the barrel (6); a plurality of rotating blades (8) are arranged in a ring array on the outer surface of the middle shaft (7); and an output shaft of the motor (10) is fixedly connected to the lower end of the middle shaft (7).

4. The neotame production detection sampling device according to claim 1, characterized in that: A connecting shaft (20) is fixedly connected to one side of the rotating seat (17), and the connecting shaft (20) is rotatably connected to the surface of one side of the connecting sleeve (19). A connecting column (22) is fixedly connected to the other side of the rotating seat (17), and a limiting sleeve (21) is fixedly connected to the other side of the connecting sleeve (19). The connecting column (22) slides through the inner side of the limiting sleeve (21), and the inner bottom surface and the inner front surface of the limiting sleeve (21) are respectively provided with limiting grooves (23), and the edges of the two limiting grooves (23) that are close to each other are respectively provided with inclined guide surfaces (24). A T-shaped block (25) is elastically inserted into the outer surface of the connecting column (22), and the lower end of the T-shaped block (25) is inserted into the inner side of the limiting groove (23).

5. A neotame production detection sampling device according to claim 4, characterized in that: A guide groove (26) is provided on the lower surface of the connecting column (22), and the upper end of the T-shaped block (25) is slidably inserted into the inner side of the guide groove (26). A compression spring (27) is provided on the inner side of the guide groove (26), and the lower end of the compression spring (27) contacts the upper surface of the T-shaped block (25).

6. The neotame production detection sampling device according to claim 1, characterized in that: The elastic mechanism comprises a slot (31) formed on the inner surface of the notch (28); T-shaped rods (30) are fixedly connected to both sides of the front surface of the extrusion plate (29); the front end of the T-shaped rod (30) is slidably inserted into the inner side of the slot (31); a return spring (32) is provided on the inner side of the slot (31); and the return spring (32) is located at the front end of the T-shaped rod (30).

7. The neotame production detection sampling device according to claim 1, characterized in that: The lower surface of the barrel (6) is fixedly connected to a connecting seat (13), the connecting seat (13) is fixedly sleeved on the outer surface of the liquid discharge port (12), a flat plate (14) is slidably inserted into the front surface of the connecting seat (13), a circular plate (15) extends from the rear end of the flat plate (14), the rear end of the flat plate (14) is slidably inserted into the front surface of the liquid discharge port (12), and the circular plate (15) is slidably embedded in the inner side of the liquid discharge port (12).

8. The neotame production detection sampling device according to claim 1, characterized in that: The lower surface of the middle plate (1) is fixedly connected to a rear baffle (35); the front surface of the rear baffle (35) is slidably connected to two limit plates (33) along the two side directions; an oblique guide plate (34) extends from the front end of the limit plate (33); a concave seat (36) is fixedly connected to the lower surface of the middle plate (1) and close to the rear of the limit plate (33); a second threaded rod (37) is rotatably connected to the inner side of the concave seat (36); the second threaded rod (37) is threadedly passed through the surfaces of the two limit plates (33); and one end of the second threaded rod (37) is fixedly connected to a second rotary head (38).

9. A sampling process for detecting neotame in production, using the sampling device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, placing the produced neotame powder and water in a barrel (6) and mixing them; S2, take the cuvette (39), place it against the front edge of the lower surface of the middle plate (1), and push it backward, so that the rotating seat (17) rotates and the drain pipe (18) moves out from the inner side of the connecting sleeve (19); S3, the inner liquid enters the drain pipe (18) through the hose (16) and flows into the cuvette (39); S4. After the sampling is completed, the cuvette (39) is taken out and the cuvette (39) and the standard solution are placed in an ultraviolet spectrophotometer for testing to detect whether the neotame content in the product meets the prescribed standard.

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