Device for automatically measuring lemon yellow content in lemon yellow

Abstract

The invention discloses a device for automatically determining the content of lemon yellow in lemon yellow, and relates to the technical field of determination of the content of the lemon yellow in the lemon yellow, the device for automatically determining the content of the lemon yellow in the lemon yellow comprises an operation tank for storing a lemon yellow preparation liquid, and the upper end and the lower end of the operation tank are respectively provided with a liquid inlet pipe and a liquid outlet pipe in a communicating manner; the liquid inlet pipe and the liquid outlet pipe are provided with first control valves used for inlet and outlet control. According to the present invention, the lemon yellow content in the lemon yellow is automatically determined through the titration assembly, and during the determination process, through the mutual cooperation of the pressure assembly, the control assembly and the conveying assembly, the rapid titration can be performed during the early titration stage while the high-speed stirring is performed so as to ensure the full mixing reaction while the determination efficiency is ensured; and at the later stage of titration, slow titration can be performed while low-speed stirring is performed, so that the color of the solution can be observed more accurately, excessive dropwise adding is avoided, and the determination accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of determining the content of tartrazine in tartrazine, in particular to a device for automatically determining the content of tartrazine in tartrazine. Background Art

[0002] Tartrazine is widely used as a common colorant. Accurately measuring the content of tartrazine can ensure that the amount of tartrazine added in the product meets the relevant quality standards. For example, in the food industry, countries have strict regulations on the use of food additives. Excessive tartrazine may cause potential harm to human health and does not meet product quality specifications. Through content determination, product quality problems due to excessive tartrazine content can be avoided.

[0003] The methods for determining the content of tartrazine in tartrazine mainly include high performance liquid chromatography, spectrophotometry, titanium trichloride titration, gas chromatography and capillary electrophoresis. In titanium trichloride titration, azo groups in the sample are reduced and decomposed by titanium trichloride in an alkaline medium, and the content of tartrazine is calculated according to the consumption of titanium trichloride standard titration solution. During the operation, a certain amount of sample is weighed, dissolved in water, and then sodium hydrogen tartrate and other reagents are added. Under the protection of carbon dioxide gas, it is titrated with titanium trichloride standard titration solution until its inherent color disappears as the end point. The content of tartrazine is calculated according to the volume of consumed titanium trichloride standard titration solution. During the titration determination, the titration speed of titanium trichloride standard titration solution is difficult to operate and control. If the titration is too slow, the efficiency of the entire tartrazine content determination is affected. If the titration is too fast, part of the excess titanium trichloride standard titration solution will be dropped in, affecting the accuracy of the determination. Therefore, we propose a device for automatically determining the content of tartrazine in tartrazine. Summary of the invention

[0004] The object of the present invention is to provide a device for automatically determining the content of tartrazine in tartrazine, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a device for automatically determining the content of tartrazine in tartrazine, comprising an operating tank for storing tartrazine preparation liquid, wherein the upper and lower ends of the operating tank are respectively connected to each other and are provided with a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe and the liquid outlet pipe are provided with a first control valve for inlet and outlet control, wherein the operating tank is provided with a heating component for heating the liquid, and further comprising: A titration assembly disposed at the upper end of the operation tank for assisting the titration and addition of titanium trichloride standard titration solution, wherein the operation tank is provided with a stirring assembly for stirring the mixed liquid during the titration process and a ventilation assembly for ventilation during the stirring process; The titration assembly includes a carrying dish for carrying a titanium trichloride standard titration solution, the carrying dish and the operation tank are supported by a support frame, a burette is connected between the carrying dish and the operation tank, a second control valve for titration start and stop control is installed on the burette, a pressure assembly for squeezing the titanium trichloride standard titration solution during the titration process is arranged on the carrying dish, and a control assembly for controlling the pressure of the pressure assembly during the titration process is arranged on the upper end of the operation tank; The stirring assembly comprises a stirring rod rotatably connected to the operating tank. The stirring rod is located on the side wall inside the operating tank and has multiple groups of stirring plates fixed thereon. The operating tank is provided with a rotating assembly for rotating the stirring rod.

[0006] Preferably, the pressure assembly includes a buoyancy pressure plate slidably connected to the interior of the carrier vessel for pressing against the liquid surface of the titanium trichloride standard titration solution, the buoyancy pressure plate and the interior of the carrier vessel are matched with each other, and a liquid tank is fixed in the center of the upper end of the buoyancy pressure plate.

[0007] Preferably, the control component includes a liquid storage tank fixedly mounted on the upper end of the operating tank, the interior of the liquid storage tank is filled with circulating liquid, a conveying component for assisting the circulation and conveying of the circulating liquid is arranged between the liquid storage tank and the liquid tank, a piston plate for squeezing the circulating liquid inside the liquid storage tank is arranged on the liquid storage tank, a connecting component for connecting the piston plate is arranged on the outside of the liquid storage tank, the stirring rod is located on the side wall outside the operating tank and is fixed with a mounting sleeve, and the mounting sleeve is provided with an extrusion component for squeezing the piston plate.

[0008] Preferably, the conveying assembly includes a conveying pipe and a return pipe which are connected to the liquid storage tank, a first connecting cylinder and a second connecting cylinder are fixed to the upper end of the liquid storage tank, the conveying pipe is connected to the first connecting cylinder by a hose, and the return pipe is connected to the second connecting cylinder by a hose, the first connecting cylinder is provided with a plurality of groups of liquid outlet holes for liquid discharge, and the second connecting cylinder is provided with a plurality of groups of liquid inlet holes for liquid inlet, a first one-way valve and a second one-way valve are respectively installed inside the first connecting cylinder and the second connecting cylinder, the conducting direction of the first one-way valve is from the inside of the liquid storage tank to the inside of the liquid storage tank, and the conducting direction of the second one-way valve is arranged opposite to that of the first one-way valve.

[0009] Preferably, the extrusion components are provided in multiple groups, and the multiple groups of extrusion components are evenly distributed around the installation sleeve.

[0010] Preferably, the extrusion assembly includes a mounting cylinder arranged on the outside of the mounting sleeve, one end of the mounting cylinder is rotatably connected to the outside of the mounting sleeve through a pin shaft, the front end of the mounting cylinder is slidably connected to an extrusion pin rod for pressing against one side of the piston plate, and a connecting spring for connecting the extrusion pin rod is installed inside the mounting cylinder.

[0011] Preferably, two groups of the connecting components are provided, and the two groups of the connecting components are symmetrically arranged on both sides of the liquid storage tank.

[0012] Preferably, the connecting assembly includes a mounting frame fixed to the outside of the liquid storage tank, and multiple groups of T-rods are slidably connected to the mounting frame. A mounting plate is fixed to one side of the piston plate, one end of each group of T-rods is fixed to the mounting plate, and a mounting spring is provided on the outer side of each group of T-rods.

[0013] Preferably, the rotating assembly includes a gear ring fixed to the outside of the stirring rod, a U-shaped frame is fixed to the upper end of the operating tank, a gear is rotatably connected to the U-shaped frame, the gear and the gear ring are meshed with each other, and a motor is installed on the U-shaped frame to drive the gear to rotate.

[0014] Preferably, the ventilation assembly includes a linkage chamber that is connected to the stirring rod and each group of stirring plates. The upper end of the stirring rod is rotatably connected to a mounting tube that is connected to the interior of the linkage chamber. A third control valve for controlling air inlet and outlet is installed on the mounting tube. A plurality of air outlet holes that are connected to the interior of the linkage chamber are opened on the stirring plate. A third one-way valve is installed inside the air outlet. The conduction direction of the third one-way valve is from the inside of the air outlet to the outside of the air outlet.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The invention uses a titration component to automatically measure the content of lemon yellow in lemon yellow. In the process of measurement, the pressure component, the control component and the conveying component cooperate with each other, so that in the initial stage of titration, the solution can be quickly titrated while stirring at a high speed, thereby ensuring sufficient mixing reaction and measuring efficiency. In the later stage of titration, the solution can be slowly titrated while stirring at a low speed, thereby facilitating more accurate observation of the solution color, avoiding excessive dripping and improving the accuracy of measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention; Figure 2 It is a schematic diagram of the structure of the stirring assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the ventilation assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the rotating assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the conveying assembly of the present invention; Figure 6 It is a schematic diagram of the structure of the extrusion assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the connection assembly of the present invention; Figure 8 This is a schematic diagram of the liquid delivery path when the titration pressure is increased in the present invention; Fig. 9 This is a schematic diagram of the liquid delivery path when reducing the titration pressure in the present invention; Fig.10 It is a schematic diagram of the structure of the conveying component of the present invention.

[0017] In the figure: 101-operating tank; 102-liquid inlet pipe; 103-liquid outlet pipe; 104-first control valve; 201-carrying dish; 202-support frame; 203-burette; 204-second control valve; 301-stirring rod; 302-stirring plate; 401-mounting pipe; 402-third control valve; 403-air outlet; 404-third one-way valve; 501-gear ring; 502-U-shaped frame; 503-gear; 504-mounting motor; 601-buoyancy pressure plate ;602-liquid tank; 701-liquid storage tank; 702-piston plate; 801-mounting frame; 802-T-bar; 803-mounting plate; 804-mounting spring; 901-delivery pipe; 902-return pipe; 903-first connecting cylinder; 904-second connecting cylinder; 905-hose; 906-liquid outlet; 907-liquid inlet; 908-first one-way valve; 909-second one-way valve; 10-mounting sleeve; 1101-mounting cylinder; 1102-extrusion pin. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1 See also Figure 1-Figure 10 , a device for automatically determining the content of tartrazine in tartrazine shown in the figure, comprising an operation tank 101 for storing tartrazine preparation liquid, the upper and lower ends of the operation tank 101 are respectively connected to be equipped with a liquid inlet pipe 102 and a liquid outlet pipe 103, the liquid inlet pipe 102 and the liquid outlet pipe 103 are respectively equipped with a first control valve 104 for inlet and outlet control, and the operation tank 101 is provided with a heating component for heating the liquid; It is worth noting here that: the heating assembly is used to heat the reaction liquid, which is considered as the prior art in this application and will not be described in detail here; It should be noted here that: in the present application, the preparation of the lemon yellow preparation solution and the titanium trichloride standard titration solution is a conventional technical means, which is a prior art in the present application and will not be described in detail here. In the present application, the calculation process of the lemon yellow content according to the volume of the consumed titanium trichloride standard titration solution is also a conventional technical means, which is a prior art in the present application and will not be described in detail here. Also includes: A titration assembly disposed at the upper end of the operation tank 101 for assisting the titration and addition of the titanium trichloride standard titration solution, and a stirring assembly for stirring the mixed liquid during the titration process and a ventilation assembly for ventilation during the stirring process are disposed on the operation tank 101; The titration assembly includes a carrying dish 201 for carrying a titanium trichloride standard titration solution, the carrying dish 201 and the operation tank 101 are supported by a support frame 202, a burette 203 is connected between the carrying dish 201 and the operation tank 101, a second control valve 204 for titration start and stop control is installed on the burette 203, a pressure assembly for squeezing the titanium trichloride standard titration solution during the titration process is arranged on the carrying dish 201, and a control assembly for controlling the pressure of the pressure assembly during the titration process is arranged on the upper end of the operation tank 101; It should be noted here that: the tartrate content in tartrate is automatically determined by the titration component, and in the determination process, the pressure component, the control component and the conveying component cooperate with each other, that is, in the initial stage of titration, the titration can be performed quickly while stirring at high speed, so as to ensure sufficient mixing reaction and the efficiency of determination, and in the later stage of titration, the titration can be performed slowly while stirring at low speed, which is conducive to more accurate observation of the solution color, avoiding excessive dripping and improving the accuracy of determination.

[0020] The stirring assembly includes a stirring rod 301 rotatably connected to the operating tank 101. The stirring rod 301 is located on the side wall inside the operating tank 101 and has multiple groups of stirring plates 302 fixed thereon. The operating tank 101 is provided with a rotating assembly for rotating the stirring rod 301. It should be noted here that: during the automatic measurement, at the beginning of the measurement, the stirring rod 301 is rotated at a relatively high speed by rotating the assembly. During the rotation of the stirring rod 301, each group of stirring plates 302 is driven to rotate at a high height inside the operating tank 101. The high-speed rotation of the stirring plates 302 ensures that the lemon yellow preparation solution and the prepared titanium trichloride standard titration solution are fully mixed and reacted.

[0021] Preferably, the pressure assembly includes a buoyancy pressure plate 601 slidably connected to the inside of the carrier dish 201 for pressing against the liquid surface of the titanium trichloride standard titration solution, the buoyancy pressure plate 601 and the inside of the carrier dish 201 are matched with each other, and a liquid tank 602 is fixed in the center of the upper end of the buoyancy pressure plate 601; It should be noted that: the buoyancy pressure plate 601 and the liquid tank 602 exert pressure on the titanium trichloride standard titration solution in the carrier dish 201 , so that the titanium trichloride standard titration solution passes through the burette 203 and is titrated toward the lemon yellow preparation solution in the operating tank 101 .

[0022] Preferably, the control component includes a liquid storage tank 701 fixedly mounted on the upper end of the operating tank 101, the interior of the liquid storage tank 701 is filled with circulating liquid, a conveying component for assisting the circulation and conveying of the circulating liquid is arranged between the liquid storage tank 701 and the liquid tank 602, a piston plate 702 for squeezing the circulating liquid inside the liquid storage tank 701 is arranged on the liquid storage tank 701, and a connecting component for connecting the piston plate 702 is arranged on the outer side of the liquid storage tank 701, and the stirring rod 301 is located on the side wall outside the operating tank 101 and is fixed with a mounting sleeve 10, and the mounting sleeve 10 is provided with an extrusion component for squeezing the piston plate 702; the conveying component includes a conveying pipe 901 and a reflux pipe 902 which are connected to the liquid storage tank 701, and the presenting tank 602 is provided with a presenting tank 602. A first connecting cylinder 903 and a second connecting cylinder 904 are fixed to the upper end of the liquid tank 602. The delivery pipe 901 is connected to the first connecting cylinder 903 through a hose 905, and the return pipe 902 is connected to the second connecting cylinder 904 through a hose 905. The first connecting cylinder 903 is provided with a plurality of liquid outlet holes 906 for discharging liquid, and the second connecting cylinder 904 is provided with a plurality of liquid inlet holes 907 for inletting liquid. A first check valve 908 and a second check valve 909 are installed inside the first connecting cylinder 903 and the second connecting cylinder 904, respectively. The conducting direction of the first check valve 908 is from the inside of the liquid storage tank 701 to the inside of the liquid storage tank 602, and the conducting direction of the second check valve 909 is opposite to that of the first check valve 908. It should be noted here that the control component and the delivery component can facilitate the control of the delivery and reflux operations of the circulating liquid.

[0023] Preferably, there are multiple groups of extrusion components, and the multiple groups of extrusion components are evenly distributed around the installation sleeve 10; It should be noted here that the extrusion effect is ensured by using multiple sets of extrusion components.

[0024] Preferably, the extrusion assembly includes a mounting cylinder 1101 disposed on the outside of the mounting sleeve 10, one end of the mounting cylinder 1101 is rotatably connected to the outside of the mounting sleeve 10 through a pin shaft, the front end of the mounting cylinder 1101 is slidably connected to an extrusion pin 1102 for abutting against and extruding one side of the piston plate 702, and a connecting spring for connecting the extrusion pin 1102 is installed inside the mounting cylinder 1101; It should be noted here that: during the high-speed rotation of the stirring rod 301, through the connecting action of the mounting sleeve 10, the extrusion pins 1102 on each group of extrusion assemblies are subjected to a large centrifugal force and slide outward on the mounting cylinder 1101. Through the outward sliding of the extrusion pins 1102 and the rotation of the mounting sleeve 10, one end of the extrusion pins 1102 is abutted against one side of the piston plate 702, pushing the piston plate 702 to move toward the inside of the liquid storage tank 701.

[0025] Preferably, two groups of connection components are provided, and the two groups of connection components are symmetrically arranged on both sides of the liquid storage tank 701; It should be noted here that the stability of the connection is ensured by two sets of connection components.

[0026] Preferably, the connection assembly includes a mounting frame 801 fixed to the outside of the liquid storage tank 701, and a plurality of groups of T-shaped rods 802 are slidably connected to the mounting frame 801. A mounting plate 803 is fixed to one side of the piston plate 702, and one end of each group of T-shaped rods 802 is fixed to the mounting plate 803. The outer side of each group of T-shaped rods 802 is sleeved with a mounting spring 804. It should be noted here that: the mounting frame 801, the mounting plate 803 and the plurality of T-shaped rods 802 facilitate the slidable connection of the piston plate 702, and the mounting spring 804 facilitates the reset of the piston plate 702 after movement.

[0027] Preferably, the rotating assembly includes a gear ring 501 fixed to the outside of the stirring rod 301, a U-shaped frame 502 is fixed to the upper end of the operating tank 101, a gear 503 is rotatably connected to the U-shaped frame 502, the gear 503 and the gear ring 501 are meshed with each other, and a motor 504 for driving the gear 503 to rotate is installed on the U-shaped frame 502; It should be noted here that: by installing the motor 504, the gear 503 is driven to rotate. During the rotation of the gear 503, the gear 503 and the gear ring 501 are meshed with each other to drive the stirring rod 301 to rotate.

[0028] Preferably, the ventilation assembly includes a linkage chamber that is connected to the stirring rod 301 and each group of stirring plates 302, the upper end of the stirring rod 301 is rotatably connected to a mounting pipe 401 for communicating with the inside of the linkage chamber, a third control valve 402 for controlling the inlet and outlet of air is installed on the mounting pipe 401, a plurality of groups of air outlet holes 403 that are connected to the inside of the linkage chamber are opened on the stirring plate 302, a third one-way valve 404 is installed inside the air outlet hole 403, and the conduction direction of the third one-way valve 404 is from the inside of the air outlet hole 403 to the outside of the air outlet hole 403; It should be noted here that: during the stirring process, the external carbon dioxide gas is transported to the linkage cavity of the stirring rod 301 and each group of stirring plates 302 through the installation tube 401. Under the action of pressure, the carbon dioxide gas in the transportation process is dispersed into the interior of the lemon yellow preparation solution through the third one-way valve 404 on the air outlet 403 for ventilation, ensuring that the reducing property of titanium trichloride remains stable during the titration process, thereby ensuring that the titration reaction can proceed normally.

[0029] In this scheme: a device for automatically determining the content of tartrazine in tartrazine comprises the following steps: In the process of measuring the content of lemon yellow in lemon yellow by titanium trichloride titration, 0.5g of lemon yellow sample is weighed to an accuracy of 0.0001g, placed in a 500mL conical flask, dissolved in 50mL of water that has been boiled and cooled to room temperature, 15g of sodium hydrogen tartrate and 150mL of boiling water are added, and the lemon yellow preparation liquid is oscillated and dissolved to form the lemon yellow preparation liquid, and the lemon yellow preparation liquid is transported to the inside of the operation tank 101 through the liquid inlet pipe 102, and the transported lemon yellow preparation liquid is heated to boiling. During the heating process, the second control valve 204 is opened, and the pressure of the titanium trichloride standard titration solution in the carrier dish 201 is exerted by the buoyancy pressure plate 601 and the liquid tank 602, so that the titanium trichloride standard titration solution passes through the burette 203 and is titrated toward the lemon yellow preparation liquid in the operation tank 101 until the inherent color of the lemon yellow preparation liquid disappears, and the titration operation is stopped by closing the second control valve 204, and the lemon yellow content is calculated according to the volume of the consumed titanium trichloride standard titration solution, and the automatic determination operation of the lemon yellow content in lemon yellow is completed; During the automatic determination, at the beginning of the determination, the stirring rod 301 is rotated at a high speed by rotating the assembly. During the rotation of the stirring rod 301, each group of stirring plates 302 is driven to rotate at a high height inside the operating tank 101. The high-speed rotation of the stirring plates 302 ensures that the lemon yellow preparation solution and the prepared titanium trichloride standard titration solution are fully mixed and reacted. During the high-speed rotation of the stirring rod 301, the connection effect of the mounting sleeve 10 causes the extrusion pins 1102 on each group of extrusion assemblies to be subjected to a large centrifugal force and slide outward on the mounting cylinder 1101. The outward sliding of the piston plate 702 and the rotation of the mounting sleeve 10 cause one end of the extrusion pin 1102 to abut against one side of the piston plate 702, pushing the piston plate 702 to move toward the inside of the liquid storage tank 701. During the movement of the piston plate 702, due to the abutment and extrusion of the piston plate 702 and the liquid flowing inside the liquid storage tank 701 and the setting of the conduction direction of the first check valve 908 and the second check valve 909, part of the liquid flowing inside the liquid storage tank 701 is transported to the inside of the liquid storage tank 602 through the delivery pipe 901 and the hose 905 through the multiple groups of liquid outlet holes 906 on the first connecting tube 903 (see FIG. 1 ). Figure 8), by conveying the circulating liquid toward the inside of the liquid tank 602, the pressure of the liquid tank 602 and the buoyancy pressure plate 601 on the titanium trichloride standard titration solution inside the carrier 201 is increased, so that the titanium trichloride standard titration solution is titrated at a higher speed in the initial stage of the titration; At the end of the determination, the stirring rod 301 is rotated at a lower speed. The low-speed stirring is conducive to more accurately observing the changes in the solution color and the like, thereby more accurately determining the titration endpoint. During the low-speed rotation of the stirring rod 301, the extrusion pins 1102 on each group of extrusion components are subjected to a smaller centrifugal force and slide inward on the mounting tube 1101 under the action of the connecting spring. At this time, one end of the extrusion pins 1102 cannot abut against one side of the piston plate 702. The piston plate 702 is pushed toward the outside of the liquid storage tank 701 through the elastic force of the spring 804 installed on the connecting assembly. During the movement of the piston plate 702, the circulating liquid in the liquid tank 602 is refluxed to the inside of the liquid storage tank 701 through the multiple groups of liquid inlet holes 907 on the second connecting tube 904 through the reflux pipe 902 and the hose 905 through the elastic force of the spring 804 installed on the connecting assembly (see FIG. 1 ). Fig. 9 ), reducing the pressure of the liquid tank 602 and the buoyancy pressure plate 601 on the titanium trichloride standard titration solution inside the carrier 201, so that the titanium trichloride standard titration solution is titrated at a lower speed in the later stage of the titration, avoiding excessive dripping and improving the accuracy of the measurement; During the stirring process, the external carbon dioxide gas is transported to the linkage cavity of the stirring rod 301 and each group of stirring plates 302 through the installation pipe 401. The carbon dioxide gas in the transportation process is dispersed into the interior of the lemon yellow preparation solution through the third one-way valve 404 on the gas outlet 403 under the action of pressure for ventilation, ensuring that the reducing property of titanium trichloride remains stable during the titration process, thereby ensuring that the titration reaction can proceed normally.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for automatically determining the content of tartrazine in tartrazine, comprising: An operating tank (101) for storing tartrazine preparation liquid, wherein the upper and lower ends of the operating tank (101) are respectively connected to each other and are provided with a liquid inlet pipe (102) and a liquid outlet pipe (103), wherein the liquid inlet pipe (102) and the liquid outlet pipe (103) are provided with a first control valve (104) for inlet and outlet control, and the operating tank (101) is provided with a heating component for heating the liquid; It is characterized by further comprising: A titration component arranged at the upper end of the operation tank (101) for assisting the titration and addition of titanium trichloride standard titration solution, wherein the operation tank (101) is provided with a stirring component for stirring the mixed liquid during the titration process and a ventilation component for ventilation during the stirring process; The titration component comprises a carrying dish (201) for carrying a titanium trichloride standard titration solution, the carrying dish (201) and the operation tank (101) are supported by a support frame (202), a burette (203) is connected between the carrying dish (201) and the operation tank (101), a second control valve (204) for titration start and stop control is installed on the burette (203), a pressure component for squeezing the titanium trichloride standard titration solution during the titration process is arranged on the carrying dish (201), and a control component for controlling the pressure of the pressure component during the titration process is arranged on the upper end of the operation tank (101); The stirring assembly comprises a stirring rod (301) rotatably connected to an operating tank (101); the stirring rod (301) is located on a side wall inside the operating tank (101) and has a plurality of stirring plates (302) fixed thereto; and a rotating assembly for rotating the stirring rod (301) is provided on the operating tank (101).

2. A device for automatically measuring the content of tartrazine in tartrazine according to claim 1, characterized in that: The pressure assembly comprises a buoyancy pressure plate (601) slidably connected to the interior of the carrier dish (201) and used for pressing against the liquid surface of the titanium trichloride standard titration solution; the buoyancy pressure plate (601) and the interior of the carrier dish (201) are arranged to match each other; a liquid tank (602) is fixed in the center of the upper end of the buoyancy pressure plate (601).

3. A device for automatically measuring the content of tartrazine in tartrazine according to claim 2, characterized in that: The control component comprises a liquid storage tank (701) fixedly mounted on the upper end of the operating tank (101); the interior of the liquid storage tank (701) is filled with circulating liquid; a conveying component for assisting the circulation and conveying of the circulating liquid is arranged between the liquid storage tank (701) and the liquid tank (602); a piston plate (702) for squeezing the circulating liquid inside the liquid storage tank (701) is arranged on the liquid storage tank (701); a connecting component for connecting the piston plate (702) is arranged on the outside of the liquid storage tank (701); a mounting sleeve (10) is fixedly mounted on the side wall of the stirring rod (301) located outside the operating tank (101); and a squeezing component for squeezing the piston plate (702) is arranged on the mounting sleeve (10).

4. A device for automatically measuring the content of tartrazine in tartrazine according to claim 3, characterized in that: The delivery assembly comprises a delivery pipe (901) and a return pipe (902) which are connected to the liquid storage tank (701). A first connecting tube (903) and a second connecting tube (904) are fixed to the upper end of the liquid storage tank (602). The delivery pipe (901) and the first connecting tube (903) are connected via a hose (905). The return pipe (902) and the second connecting tube (904) are connected via a hose (905). The first connecting tube (903) is provided with a plurality of groups of connecting tubes for discharging liquid. The second connecting tube (904) is provided with a plurality of groups of liquid inlet holes (907) for liquid inlet; the first connecting tube (903) and the second connecting tube (904) are respectively installed with a first one-way valve (908) and a second one-way valve (909); the conducting direction of the first one-way valve (908) is from the inside of the liquid storage tank (701) to the inside of the liquid presentation tank (602); the conducting direction of the second one-way valve (909) is opposite to that of the first one-way valve (908).

5. A device for automatically measuring the content of tartrazine in tartrazine according to claim 4, characterized in that: The extrusion components are provided in multiple groups, and the multiple groups of extrusion components are evenly distributed around the installation sleeve (10).

6. A device for automatically measuring the content of tartrazine in tartrazine according to claim 5, characterized in that: The extrusion assembly comprises a mounting cylinder (1101) arranged on the outside of the mounting sleeve (10); one end of the mounting cylinder (1101) is rotatably connected to the outside of the mounting sleeve (10) via a pin shaft; a front end of the mounting cylinder (1101) is slidably connected to an extrusion pin rod (1102) for abutting against and extruding one side of a piston plate (702); and a connecting spring for connecting the extrusion pin rod (1102) is installed inside the mounting cylinder (1101).

7. A device for automatically measuring the content of tartrazine in tartrazine according to claim 6, characterized in that: Two groups of the connection components are provided, and the two groups of the connection components are symmetrically arranged on both sides of the liquid storage tank (701).

8. A device for automatically measuring the content of tartrazine in tartrazine according to claim 7, characterized in that: The connection assembly comprises a mounting frame (801) fixed to the outside of the liquid storage tank (701), a plurality of groups of T-shaped rods (802) being slidably connected to the mounting frame (801), a mounting plate (803) being fixed to one side of the piston plate (702), one end of each group of the T-shaped rods (802) being fixed to the mounting plate (803), and a mounting spring (804) being sleeved on the outside of each group of the T-shaped rods (802).

9. A device for automatically measuring the content of tartrazine in tartrazine according to claim 1, characterized in that: The rotating assembly comprises a gear ring (501) fixed to the outside of the stirring rod (301); a U-shaped frame (502) is fixed to the upper end of the operating tank (101); a gear (503) is rotatably connected to the U-shaped frame (502); the gear (503) and the gear ring (501) are meshed with each other; and a mounting motor (504) for driving the gear (503) to rotate is mounted on the U-shaped frame (502).

10. The device for automatically measuring the content of tartrazine in tartrazine according to claim 1, characterized in that: The ventilation assembly comprises a linkage chamber which is connected to a stirring rod (301) and each group of stirring plates (302); the upper end of the stirring rod (301) is rotatably connected to a mounting pipe (401) for communicating with the interior of the linkage chamber; a third control valve (402) for controlling air inlet and outlet is mounted on the mounting pipe (401); a plurality of groups of air outlet holes (403) which are connected to the interior of the linkage chamber are disposed on the stirring plates (302); a third one-way valve (404) is mounted inside the air outlet holes (403); and the conduction direction of the third one-way valve (404) is from the interior of the air outlet holes (403) to the exterior of the air outlet holes (403).

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