CN217931608U - Measuring and calibrating device for residual quantity of food additive - Google Patents

Abstract

The utility model relates to a food additive residual quantity measurement calibration device, the utility model discloses set up mixing subassembly and sample test subassembly on same support, through the drive of rotating the connection on the support, drive and rectangular hole sliding fit's screw pin and rotate, make L shape pole swing, reach the test tube of lid and connection and carry out the effect of reciprocal shock, through adjusting the position of screw pin in the driving-disc, adjust the range of shock, when the screw pin is in driving-disc central point and puts the department, L shape pole does not take place reciprocal shock, the stirring of the shock cooperation (mixing) shaft of test tube carries out mixing and stirring to the sample solution in the test tube, the breach groove, spacing groove and swivelling chute make the test tube conveniently dismantle the installation from the lid body with the cooperation of spacing pin, the utility model discloses detection efficiency is high, sample preparation is quick and stir the mixing abundant, makes subsequent detection data more accurate, and it is convenient to assist the detection reagent to add simultaneously, and is very convenient to the washing liquid of test tube, and the test tube dismantlement simple to install.

Description

Measuring and calibrating device for residual quantity of food additive

Technical Field

The utility model belongs to the technical field of food additive check out test set, especially, relate to food additive amount of remaining measures calibration device.

Background

According to the regulations of food hygiene laws in China, food additives are artificially synthesized or natural substances added into food for improving the qualities of the color, the fragrance, the taste and the like of the food and for the requirements of corrosion prevention and processing technology. At present, food additives in China have 23 categories, more than 2000 varieties, and comprise acidity regulators, anticaking agents, antifoaming agents, antioxidants, bleaching agents, leavening agents, coloring agents, color protection agents, enzyme preparations, flavoring agents, nutrition enhancers, preservatives, sweeteners, thickeners, spices and the like. Safe use of food additives is very important. The ideal food additive is preferably a benign substance. Food additives, especially chemically synthesized food additives, have a certain toxicity, so the use amount is strictly controlled when the food additives are used. Therefore, food additive detection needs to be carried out on food which is put on the market, and the food is strictly detected, so that the food health of people is ensured.

The food additive detection calibration device in the prior art has the problems of low detection efficiency, inaccurate detection result and incapability of detecting solid food in the detection process of a sample due to insufficient mixing of food and solution when a detection sample is prepared, and inconvenience in adding various auxiliary detection reagents. In order to solve the problems, the food safety of people is ensured, the utility model provides a measuring and calibrating device for the residual quantity of food additives.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a food additive amount of residue measures calibration device for the detection efficiency who exists of the current food additive detection device who mentions in the solution background art is low, and the sample preparation is not abundant, and the testing result inaccuracy that the sample detection leads to, in-process in the process of in-process preparation of work in process simultaneously, various supplementary detect reagent add inconvenient problem.

The above technical object of the present invention can be achieved by the following technical solutions:

the utility model provides a food additive residual quantity measures calibration device, includes the support, be connected with the mixing subassembly on the support and measure calibration assembly, its characterized in that:

the mixing assembly comprises a fixed column transversely installed at the upper end of a support, the end part of the fixed column is rotatably connected with an L-shaped rod, the lower end of the L-shaped rod is provided with a long-strip-shaped hole along the length direction, the support is rotatably connected with a driving disc arranged below the fixed column, the driving disc is connected with an output shaft of a driving motor installed on the support, the end surface of the driving disc, facing the L-shaped rod, is provided with a radial groove along the radial direction, a plurality of groups of threaded holes are formed in the radial groove at intervals along the length direction, a threaded pin in threaded fit with the threaded holes penetrates through the long-strip-shaped hole, the end part of the threaded pin is connected with a driving knob with the radius larger than the width of the long-strip-shaped hole, the outer side of the threaded pin is rotatably connected with a round sleeve in sliding fit with the inner side wall of the long-strip-shaped hole, a first spring sleeved outside the threaded pin is arranged between the round sleeve and the inner bottom surface of the radial groove, the right end of the L-shaped rod is provided with a cover body, the lower end of the cover body is provided with a test tube, the cover body is detachably connected with a stirring shaft vertically and rotatably connected with a power motor installed at the upper end of the cover body and a food feeding structure and a reagent adding structure for food adding detection and a detection food adding mechanism for adding detection reagent adding mechanism respectively;

the measuring and calibrating device comprises a turntable which is rotationally connected to the bottom of the bracket, the rotation is driven to rotate by a stepping motor arranged on the bracket, a spectrophotometer is arranged at the top of the turntable, and a plurality of detection grooves matched with the test tubes are formed in the top of the spectrophotometer along the circumferential direction of the spectrophotometer;

and the driving motor, the power motor, the stepping motor and the spectrophotometer are electrically connected with the controller arranged on the bracket.

Preferably, the lid lower extreme is opened there is the ring channel, open around the internal lateral wall of ring channel has lower extreme open-ended breach groove, the lateral wall is opened to have the rotatory groove that is linked together with four group's breach grooves in the ring channel, the lower extreme of rotatory groove is opened four groups respectively and is arranged in the spacing groove of every group breach groove one side, spacing inslot side is linked together with the ring channel, vertical sliding connection annular plate in the ring channel, be connected the second spring between the bottom surface in annular plate upper end and the ring channel, the test tube lateral wall is connected with four groups and breach groove and spacing groove complex spacer pin, the lower extreme of annular plate is connected with four groups and four groups of spacer pin correspondences and inserts and establish the complex U-shaped fork.

Preferably, the food feeding structure comprises a feeding hole formed in the upper end of the cover body, the feeding hole is connected with a feeding channel, the feeding channel is rotatably connected with a material sealing plate used for sealing the feeding channel, and the material sealing plate is in damping rotation fit with the feeding channel.

Preferably, reagent interpolation structure includes vertical opening at lid upper end feed liquor groove, it has the lower extreme to open some annular liquid outlets on the lateral wall of feed liquor tank bottom portion, vertical sliding connection shutoff board in the feed liquor inslot, be connected with the third spring between shutoff board lower extreme and the feed liquor inslot bottom surface, still include the reagent injection pipe, injection pipe tip intercommunication and ring channel matched with feed liquor pipe, open the circumference outside of feed liquor pipe has the through-hole that is linked together in with the injection pipe.

Preferably, the plurality of groups of threaded holes are distributed along the radial direction of the driving disc, and the centers of the threaded holes close to the center of the driving disc are consistent with the center of the driving disc.

Preferably, the lower end of the stirring shaft is uniformly and circumferentially connected with a plurality of groups of stirring blades.

The utility model has the advantages that: the utility model discloses set up mixing subassembly and sample test subassembly on same support, through the drive of rotating the connection on the support, drive and rectangular hole sliding fit's screw pin and rotate, make L shape pole swing, reach the test tube that carries out reciprocal shock to lid and connection, through adjusting the position of screw pin in the driving-disc, can adjust the range of shock, when the screw pin is in driving-disc central point department of putting, L shape pole then does not take place reciprocal shock, the stirring of the shock cooperation (mixing) shaft of test tube carries out mixing and stirring to the sample solution in the test tube, the breach groove, spacing groove and swivelling chute make the test tube conveniently dismantle the installation from the lid body with the cooperation of spacing pin, the utility model discloses detection efficiency is high, and sample preparation is quick and the stirring mixing is abundant, makes subsequent detected data more accurate, and the supplementary detect reagent of sample preparation process adds conveniently simultaneously, and is very convenient to the washing liquid of test tube, and the test tube is dismantled simple to operate, and therefore, the clothes hanger is strong in practicability, and suitable for being generalized to use.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a front view of the present invention.

Fig. 4 is a perspective view of the structure of the L-shaped rod and the cover connected thereto according to the present invention.

Fig. 5 is a cross-sectional view of the perspective view of fig. 4.

Fig. 6 is an enlarged view of a portion a in fig. 5.

Fig. 7 is an enlarged view of a portion B in fig. 5.

Fig. 8 is a first perspective view of the cover body and the connecting portion after removing a part of the structure of the present invention.

Fig. 9 is a second perspective view of the cover with a portion of the cover removed and the connecting portion.

Fig. 10 is a perspective view of the injector of the present invention.

In the figure, 1, a bracket; 2. fixing the column; 3. an L-shaped rod; 4. a strip hole; 5. a drive disc; 6. a drive motor; 7. a radial slot; 8. a threaded hole; 9. a threaded pin; 10. a drive knob; 11. a circular sleeve; 12. a first spring; 13. a cover body; 14. a test tube; 15. a stirring shaft; 16. a power motor; 17. a turntable; 18. a spectrophotometer; 19. detecting the groove; 20. an annular groove; 21. a notch groove; 22. a rotating tank; 23. a limiting groove; 24. an annular plate; 25. a second spring; 26. a limit pin; 27. a U-shaped fork; 28. a feed inlet; 29. a feed channel; 30. a material sealing plate; 31. a liquid inlet tank; 32. a liquid outlet; 33. a plugging plate; 34. a third spring; 35. an injection tube; 36. a liquid inlet pipe; 37. and a through hole.

Detailed Description

The following description of the present invention will be made in detail with reference to the accompanying drawings 1-10.

Embodiment one combines prior art, and this embodiment provides a food additive amount of remaining measures calibration equipment, including support 1, be connected with mixing subassembly and measurement calibration subassembly on the support 1, mixing subassembly is responsible for adding the sample of solid to the reagent intraductal and carry out the mixing stirring with detection solution, measures the calibration subassembly and is responsible for detecting the well mixed sample reagent:

the blending component comprises a fixed column 2 transversely installed at the upper end of a support 1, the end part of the fixed column 2 is rotatably connected with an L-shaped rod 3, the rod body of the L-shaped rod 3 is arranged over the lower part, the lower end of the L-shaped rod 3 is provided with a long hole 4 along the length direction, the support 1 is rotatably connected with a driving disk 5 arranged below the fixed column 2, the driving disk 5 is connected with an output shaft of a driving motor 6 installed on the support 1, the driving disk 5 is driven by the driving motor 6 to rotate, the end surface of the driving disk 5 facing the L-shaped rod 3 is provided with a radial groove 7 along the radial direction, a plurality of groups of threaded holes 8 are arranged in the radial groove 7 along the length direction at intervals, the radial groove 7 is arranged along the radial direction of the driving disk 5, the length of the radial groove is matched with the radius of the driving disk 5, and a threaded pin 9 in threaded fit with the threaded hole 8 is arranged in the long hole 4 in a penetrating way, the end part of the threaded pin 9 is connected with a driving knob 10 with the radius larger than the width of the strip hole 4, the driving knob 10 can be screwed into the threaded pin 9, a plurality of groups of threaded holes 8 are arranged along the radial direction of the driving disc 5, the center of the threaded hole 8 close to the center of the driving disc 5 is consistent with the center of the driving disc 5, namely, the threaded hole 8 close to the center of the driving disc 5 is positioned at the central position of the driving disc 5, the outer side of the threaded pin 9 is rotatably connected with a round sleeve 11 in sliding fit with the inner side wall of the strip hole 4, the round sleeve 11 is connected with the threaded pin 9 through a sleeve bearing, a first spring 12 sleeved outside the threaded pin 9 is arranged between the round sleeve 11 and the inner bottom surface of the radial groove 7, the first spring 12 is abutted between the radial groove 7 and the round sleeve 11 to apply a reverse thrust to prevent the threaded pin 9 from coming off in the rotating process of the driving disc 5, in the rotating process of the driving disc 5, the threaded pin 9 is driven to rotate along with the driving disc 5, the threaded pin 9 rotates and is in sliding connection with the strip hole 4 on the L-shaped rod 3, so that the threaded pin 9 drives the L-shaped rod 3 to swing in a reciprocating manner, the swinging amplitude is adjusted by adjusting the position of the threaded pin 9, a cover body 13 is installed at the right end of the L-shaped rod 3, a test tube 14 is arranged at the lower end of the cover body 13, the cover body 13 is detachably connected with the test tube 14, the test tube 14 is conveniently detached from and installed on the cover body 13, a stirring shaft 15 arranged in the test tube 14 is vertically and rotatably connected onto the cover body 13, a plurality of groups of stirring blades are uniformly distributed at the lower end of the stirring shaft 15 along the circumferential direction and used for stirring a power sample in the test tube 14, the stirring shaft 15 is connected with an output shaft of a motor 16 installed at the upper end of the cover body 13, the upper end of the cover body 13 is respectively connected with a food feeding structure and a reagent adding structure, and the food to be detected and the reagent are respectively added so as to respectively meet the requirements of adding of food and adding of the detection reagent;

the measurement calibration device comprises a turntable 17 rotationally connected to the bottom of the bracket 1, the rotation is driven to rotate by a stepping motor arranged on the bracket 1, a spectrophotometer 18 is arranged at the top of the turntable 17 and is used for detecting a sample, a plurality of detection grooves 19 matched with the test tubes 14 are formed in the top of the spectrophotometer 18 along the circumferential direction of the spectrophotometer, and the grooves are used for accommodating the test tubes 14;

the driving motor 6, the power motor 16, the stepping motor, the spectrophotometer 18 are all electrically connected with the controller installed on the bracket 1, the controller is made of CPU, and is used for the working time sequence and the working state of each part of the controller, which is the prior art and is not repeated, when the utility model is used, firstly, the test tube 14 is installed at the lower end of the cover body 13 by the test tube 14 through the detachable connecting structure, then, the sample is collected and added into the test tube 14 through the food feeding structure, after the adding is completed, the solution can also be added into the test tube 14 through the food sizing structure, if the detection auxiliary reagent needs to be added, the reagent is added into the test tube 14 through the reagent adding structure, after the adding is completed, the driving motor 6 and the power motor 16 can be opened through the controller, the power motor 16 stirs and scatters the solid sample in it through the stirring shaft 15, and fully fuses, the driving motor 6 drives the threaded pin 9 to work through the driving disc 5, the threaded pin 9 works to drive the L-shaped rod 3 to swing back and forth in the vertical plane, so as to achieve the purpose of vibrating the test tube 14, the vibration amplitude of the test tube 14 is adjusted by adjusting the position of the threaded pin 9, after the vibration and the stirring are completed, the test tube 14 is taken down and placed into the detection groove 19 for detection, when the rotation is needed, the rotation is controlled by the controller to control the turntable 17 to rotate, so as to prevent the mixed liquid of the sample from precipitating, so that the mixed liquid of the sample is always kept in a suspended state, after the detection is completed, the data is recorded, and simultaneously, the test tube 14 can be shocked and cleaned in the cleaning process after the detection is completed, so that the cleaning effect is better, and the detection efficiency of the embodiment is high, sample preparation is quick and the stirring mixing is abundant for subsequent detected data is more accurate, and the supplementary testing reagent of sample preparation process adds the convenience simultaneously, and is very convenient to test tube 14's washing liquid, and the practicality is strong, is fit for using widely.

In the second embodiment, on the basis of the first embodiment, the lower end of the cover 13 is provided with the annular groove 20, the periphery of the inner and outer side walls of the annular groove 20 is provided with the notch grooves 21 with the lower end opened, the inner and outer side walls of the annular groove 20 are provided with the rotating grooves 22 communicated with the four groups of notch grooves 21, the rotating grooves 22 are communicated with the notch grooves 21 and the annular groove 20, the radius of the rotating grooves 22 is larger than that of the annular groove 20, the lower end of the rotating grooves 22 is respectively provided with four groups of limiting grooves 23 arranged on one side of each group of notch grooves 21, the inner sides of the limiting grooves 23 are communicated with the annular groove 20, each group of notch grooves 21, limiting grooves 23 and the rotating grooves 22 thereon form a continuous L-shaped groove body structure, the annular groove 20 is vertically and slidably connected with the annular plate 24, a second spring 25 is connected between the upper end of the annular plate 24 and the inner upper bottom surface of the annular groove 20, and the second spring 25 has the effect of reversely pushing the annular plate 24, the outer side wall of the test tube 14 is connected with four groups of limiting pins 26 matched with the notch grooves 21 and the limiting grooves 23, the lower end of the annular plate 24 is connected with four groups of limiting pins 26 which are correspondingly inserted into the U-shaped forks 27, the limiting grooves 23 can be arranged into a split type groove body structure in order to be capable of placing the U-shaped forks 27, the first groove body structure arranged in the super inner side and the second groove body structure arranged in the super outer side are arranged, the second groove body structure is larger than the first groove body structure and is matched with the U-shaped forks 27, so that the U-shaped forks 27 can vertically move in the second groove body, when the test tube 14 is used, the limiting pins 26 on the test tube 14 are aligned with the four groups of notch grooves 21, then the test tube 14 is upwards pushed, the end part of the test tube 14 can push the annular plate 24 to compress the second spring 25, after the limiting grooves 23 move to the position of the rotating grooves 22, the test tube 14 is rotated, make spacing pin 26 enter into the position of spacing groove 23 on, then under the effect of second spring 25, annular plate 24 moves down for on U-shaped fork 27 forks spacing pin 26, then restriction test tube 14's rotation prevents simultaneously that test tube 14 from coming off along with the in-process direction that lid 13 vibrates, when needing to take off test tube 14, the operation can in reverse.

In the third embodiment, on the basis of the first embodiment, the food feeding structure comprises a feeding hole 28 formed in the upper end of the cover body 13, the feeding hole 28 is connected with a feeding channel 29, a sealing plate 30 for sealing the feeding channel 29 is rotatably connected to the feeding channel 29, and a damped rotating fit is formed between the sealing plate 30 and the feeding channel 29, so that the sealing plate 30 is prevented from being separated from the feeding channel 29 during oscillation, and the feeding channel 29 is opened;

the reagent adding structure comprises a liquid inlet groove 31 vertically formed in the upper end of a cover body 13, an annular liquid outlet 32 formed in the lower end of the outer side wall of the bottom of the liquid inlet groove 31, a blocking plate 33 vertically connected with the liquid inlet groove 31 in a sliding mode, a third spring 34 connected between the lower end of the blocking plate 33 and the inner bottom surface of the liquid inlet groove 31, and a reagent injection tube 35, wherein the third spring 34 and the blocking plate 33 are matched to achieve the purpose of blocking the annular liquid inlet groove 31.

When the utility model is used, the utility model is firstly aligned with the four groups of notch grooves 21 by the limiting pin 26 on the test tube 14, then the test tube 14 is pushed upwards, the end part of the test tube 14 can push the annular plate 24 to compress the second spring 25, after the limiting groove 23 is moved to the position of the rotary groove 22, the test tube 14 is rotated to lead the limiting pin 26 to enter the position of the limiting groove 23, then under the action of the second spring 25, the annular plate 24 moves downwards to lead the U-shaped fork 27 to fork the limiting pin 26, then the rotation of the test tube 14 is limited, meanwhile, the test tube 14 is prevented from falling off along with the direction of the vibrating process of the cover body 13, when the test tube 14 needs to be taken off, the operation is carried out reversely, after the test tube 14 is installed, then the sample is added into the test tube 14 through the feeding channel 29 after being collected, after the addition is completed, the material sealing plate 30 is closed, if the auxiliary detection reagent needs to be added, the auxiliary detection reagent is added at the position of the liquid inlet tank 31 through the test tube 14, after the addition is completed, the driving motor 6 and the power motor 16 can be started through the controller, the power motor 16 stirs and scatters solid samples in the solid samples through the stirring shaft 15, and simultaneously, the solid samples are fully fused, the driving motor 6 drives the threaded pin 9 to work through the driving disc 5, the work of the threaded pin 9 drives the L-shaped rod 3 to swing back and forth in a vertical plane, so that the purpose of shaking the test tube 14 is achieved, the shaking amplitude of the test tube 14 is adjusted by adjusting the position of the threaded pin 9, after the shaking and the stirring are completed, the test tube 14 is taken down and put into the detection groove 19 for detection, when the test tube 14 needs to rotate, the test tube is rotated by controlling the turntable 17 through the controller, the uniform mixing liquid of the samples is prevented from precipitating, and the uniform suspension state is kept all the time, after detecting the completion, carry out the record to data, also can vibrate the washing to test tube 14 simultaneously in detecting the cleaning process who accomplishes later for abluent effect is better, the utility model discloses detection efficiency is high, and sample preparation is quick and the stirring mixing is abundant, makes subsequent detected data more accurate, and the supplementary detect reagent of sample preparation process adds conveniently simultaneously, and is very convenient to test tube 14's washing liquid, and test tube 14 dismantles simple to operate, and the practicality is strong, is fit for using widely.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. Food additive residual quantity measures calibration device, including support (1), be connected with mixing subassembly and measurement calibration subassembly on support (1), its characterized in that:

the uniform mixing component comprises a fixed column (2) transversely installed at the upper end of a support (1), the end part of the fixed column (2) is rotatably connected with an L-shaped rod (3), the lower end of the L-shaped rod (3) is provided with a strip hole (4) along the length direction, a driving disc (5) arranged below the fixed column (2) is rotatably connected with the support (1), the driving disc (5) is connected with an output shaft of a driving motor (6) installed on the support (1), the end surface of the driving disc (5) facing the L-shaped rod (3) is provided with a radial groove (7) along the radial direction, a plurality of groups of threaded holes (8) are formed in the radial groove (7) along the length direction at intervals, a threaded pin (9) in threaded fit with the threaded hole (8) penetrates through the elongated hole (4), the end part of the threaded pin (9) is connected with a driving knob (10) with the radius larger than the width of the elongated hole (4), the outer side of the threaded pin (9) is rotatably connected with a round sleeve (11) in sliding fit with the inner side wall of the elongated hole (4), a first spring (12) sleeved outside the threaded pin (9) is arranged between the round sleeve (11) and the inner bottom surface of the radial groove (7), the right end of the L-shaped rod (3) is provided with a cover body (13), the lower end of the cover body (13) is provided with a test tube (14), the cover body (13) is detachably connected with the test tube (14), the cover body (13) is vertically and rotatably connected with a stirring shaft (15) arranged in the test tube (14), the stirring shaft (15) is connected with an output shaft of a power motor (16) arranged at the upper end of the cover body (13), and the upper end of the cover body (13) is respectively connected with a food feeding structure and a reagent adding structure, so that the food to be detected is added and a detection reagent is added respectively;

the measurement calibration device comprises a turntable (17) which is rotationally connected to the bottom of the support (1), the rotation is driven to rotate by a stepping motor arranged on the support (1), a spectrophotometer (18) is arranged at the top of the turntable (17), and a plurality of detection grooves (19) matched with the test tubes (14) are formed in the top of the spectrophotometer (18) along the circumferential direction of the spectrophotometer;

the driving motor (6), the power motor (16), the stepping motor and the spectrophotometer (18) are electrically connected with a controller installed on the bracket (1).

2. The food additive residue amount measuring and calibrating device according to claim 1, wherein the lower end of the cover body (13) is provided with an annular groove (20), the periphery of the inner and outer side walls of the annular groove (20) is provided with notched grooves (21) with an open lower end, the inner and outer side walls of the annular groove (20) are provided with rotating grooves (22) communicated with four groups of notched grooves (21), the lower end of each rotating groove (22) is provided with four groups of limiting grooves (23) arranged on one side of each group of notched grooves (21), the inner side of each limiting groove (23) is communicated with the annular groove (20), the annular groove (20) is internally and vertically connected with an annular plate (24) in a sliding manner, the upper end of the annular plate (24) and the inner and upper bottom surfaces of the annular groove (20) are connected with second springs (25), the outer side wall of the test tube (14) is connected with four groups of limiting pins (26) matched with the notched grooves (21) and the limiting grooves (23), and the lower ends of the annular plate (24) are connected with four groups of U-shaped forks (27) correspondingly inserted and matched with the four groups of limiting pins (26).

3. The food additive residual quantity measuring and calibrating device according to claim 1, wherein the food feeding structure comprises a feeding hole (28) formed at the upper end of the cover body (13), the feeding hole (28) is connected with a feeding channel (29), a material sealing plate (30) for sealing the feeding channel (29) is rotatably connected to the feeding channel (29), and the material sealing plate (30) is in damping rotation fit with the feeding channel (29).

4. The device for measuring and calibrating the residual quantity of the food additive according to claim 1, wherein the reagent adding structure comprises a liquid inlet groove (31) vertically formed in the upper end of the cover body (13), an annular liquid outlet (32) formed in the lower end of the liquid inlet groove (31) is formed in the outer side wall of the bottom of the liquid inlet groove (31), a blocking plate (33) is vertically connected in the liquid inlet groove (31) in a sliding manner, a third spring (34) is connected between the lower end of the blocking plate (33) and the inner bottom surface of the liquid inlet groove (31), the device further comprises a reagent injection tube (35), the end of the injection tube (35) is communicated with a liquid inlet tube (36) matched with the annular groove (20), and a through hole (37) communicated with the inside of the injection tube (35) is formed in the circumferential outer side of the liquid inlet tube (36).

5. The food additive residual amount measuring and calibrating device according to claim 1, wherein the plurality of groups of threaded holes (8) are arranged along the radial direction of the driving disc (5), and the centers of the threaded holes (8) close to the center of the driving disc (5) are consistent with the center of the driving disc (5).

6. The food additive residual quantity measuring and calibrating device according to claim 1, wherein a plurality of groups of stirring blades are uniformly distributed and connected at the lower end of the stirring shaft (15) along the circumferential direction.

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