Stock solution viscosity measuring device

Abstract

The utility model discloses a stock solution viscosity measuring device which comprises a constant-temperature box and a solution storage tank arranged in the constant-temperature box and used for containing stock solution, a solution outlet is formed in the bottom of the solution storage tank and connected with a viscometer, the viscometer is provided with an automatic control valve for controlling flowing of the stock solution, and a bottom port of the viscometer extends out of the constant-temperature box. A temperature sensor used for monitoring the temperature of the stock solution is arranged in the liquid storage tank, an inductor corresponding to the viscometer in position is arranged on the outer wall of the constant-temperature box, the temperature sensor and the inductor are both connected with the signal input end of a controller, and the signal output end of the controller is connected with the automatic control valve and the timer. According to the stock solution viscosity measuring device provided by the utility model, the accuracy of stock solution viscosity measurement is improved, and accurate data support is provided for process adjustment.

Description

Technical Field

[0001] This utility model belongs to the field of viscosity measurement, specifically relating to a device for measuring the viscosity of a raw liquid. Background Technology

[0002] Polyvinyl alcohol is an important chemical raw material used in the production of fiber processing, weaving sizing, adhesives, architectural coatings, emulsion stabilizers and dispersants. It can also be used in the manufacture of acetal derivatives, biodegradable films, protective colloids, optical films and other products, and has a wide range of applications in the textile, food, pharmaceutical, construction and agriculture industries.

[0003] my country is the world's largest producer of polyvinyl alcohol (PVA). The preparation process of PVA includes: first, preparing vinyl acetate from acetylene and acetic acid; then, polymerizing vinyl acetate under certain conditions to obtain polyvinyl acetate (PVAC); and finally, undergoing alcoholysis to obtain PVA. During production, it is necessary to measure the viscosity of the PVAC aqueous solution to facilitate process adjustments. The measurement is conducted in a viscosity measuring chamber, which is an insulated box containing a tungsten filament lamp. The tungsten filament lamp heats up under AC voltage, heating the gas inside and generating infrared electromagnetic waves, radiating heat to achieve localized temperature increases. Currently, a manual voltage regulator is used to adjust the temperature inside the viscosity measuring chamber to 50°C and maintain this temperature for 20 minutes. First, take approximately 250 mL of stock solution (16% PVAC aqueous solution, solution temperature 80-90℃) from the sampling port of the dissolving machine using a sampling cup. Before sampling, remove any gelled material from the sampling port and slowly open the sampling valve. After sampling, immerse the sampling cup in a cooling water bath to cool it. Simultaneously, use a mercury thermometer to continuously stir the solution in the same direction at a uniform speed until the stock solution in the sampling cup is evenly cooled to 50℃. Then, transfer the stock solution to the viscosity measuring chamber. All subsequent operations are performed inside the viscosity measuring chamber. Block the lower outlet of the viscometer with your left index finger and pour the stock solution from the sampling cup into the viscometer until it reaches approximately 1 cm above the upper mark. Then, place the sampling cup below the viscometer tube opening and measure the time it takes for the stock solution to descend from the upper mark to the lower mark. The structure of the viscometer is as follows: Figure 7 As shown, the viscometer is a glass straight tube with openings at both ends. The top opening is funnel-shaped to facilitate pouring of the stock solution, and the bottom opening is sealed with a rubber stopper. A through hole is opened in the center of the rubber stopper, and a short stainless steel tube is inserted into the through hole as the stock solution outlet.

[0004] The drawbacks of existing technologies for measuring the viscosity of stock solutions are as follows: the viscosity measuring chamber is not sealed and has a simple structure, resulting in large temperature fluctuations within the chamber, which affects the viscosity of the sample and consequently the time it takes for the stock solution to flow through a unit volume; the temperature of the viscosity measuring chamber is controlled manually by a pressure regulator, which does not meet current accuracy requirements; in addition, the non-sealed nature of the viscosity measuring chamber leads to large temperature fluctuations when the viscometer is placed in or removed; because the temperature of the sample being analyzed is relatively high (80-90℃), a cooling water bath is used to pre-cool the sample, and to ensure uniform temperature throughout the sample, a mercury thermometer is used to continuously stir the sample in the same direction at a constant speed until the sample temperature reaches 50℃ before it is injected into the viscosity tube. However, due to the inherent viscosity of the sample, small air bubbles are generated during stirring due to friction, which affects the flow rate of the sample in the viscometer; since the viscometer is a straight-through tube without a valve, if the lower rubber stopper is poorly sealed during the sample flow from top to bottom, air can enter the tube through the gap, generating air bubbles that rise and affect the sample flow rate. Therefore, the entire measurement process is greatly affected by temperature, operation, and the device itself, which results in a large error in the measured viscosity value. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a device for measuring the viscosity of raw materials, which improves the accuracy of measuring the viscosity of raw materials and provides accurate data support for process adjustment.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A device for measuring the viscosity of a stock solution includes a constant temperature chamber and a storage tank inside the constant temperature chamber for holding the stock solution. The bottom of the storage tank has an outlet connected to a viscometer. The viscometer is equipped with an automatic control valve for controlling the flow of the stock solution. The bottom port of the viscometer extends out of the constant temperature chamber. A temperature sensor for monitoring the temperature of the stock solution is installed inside the storage tank. A sensor corresponding to the position of the viscometer is installed on the outer wall of the constant temperature chamber. Both the temperature sensor and the sensor are connected to the signal input terminal of a controller. The signal output terminal of the controller is connected to the automatic control valve and a timer, respectively.

[0008] Furthermore, the incubator has a double-layered transparent glass structure. The incubator can be, for example, a flat cuboid shape. The top of the incubator is equipped with an openable lid, which is connected to the incubator by, for example, a hinge or pivot. The lid is used to reduce heat loss inside the incubator.

[0009] Furthermore, the constant temperature chamber includes an inner chamber and an outer chamber located outside the inner chamber. The inner chamber serves as the water-containing chamber, and a sandwich is formed between the inner and outer chambers. A heating tube wound around the outer wall of the inner chamber is installed in the sandwich. The heating tube is used to heat the water in the inner chamber. The heating tube can be electrically heated, for example. The bottom wall of the inner chamber has an outlet, an inlet, and a through hole for the viscometer to extend. A sealing ring is installed in the through hole. A circulating water pipe is connected between the outlet and the inlet. A water pump for powering the circulation and a water thermometer for measuring the circulation temperature are installed on the circulating water pipe. The water thermometer is interlocked with the power regulator of the heating tube to maintain a constant water temperature in the inner chamber. The circulating water flows out from the outlet and enters through the inlet. Using circulating water for constant temperature effectively reduces errors caused by temperature changes during the test.

[0010] Furthermore, the inner wall of the inner box is provided with multiple suspension hooks. Preferably, each side wall of the inner box is provided with a suspension hook. The suspension hook is L-shaped and includes a first fixed seat plate connected to the inner wall of the inner box and a first limiting plate perpendicularly connected to the first fixed seat plate.

[0011] Furthermore, the top edge of the liquid storage tank is provided with a connecting part, which is located on the periphery of the liquid storage tank. The connecting part is a folded edge formed by extending outward from the top edge of the liquid storage tank to a certain length and then extending downward. In specific applications, the liquid storage tank is placed in a constant temperature chamber, and the connecting part overlaps with the suspension hook. The bottom edge of the connecting part rests on the first fixed base plate, which is used to support the liquid storage tank. The downward-extending part of the connecting part is located inside the first limiting plate. The first limiting plate limits the liquid storage tank and prevents the liquid storage tank from slipping off the first fixed base plate.

[0012] Furthermore, there are multiple outlets, which are arranged sequentially at intervals along the length of the storage tank. Each outlet is connected to a viscometer, and the raw liquid enters the viscometer from the outlet.

[0013] Furthermore, the viscometer is a tubular body, comprising, from top to bottom, an inverted conical section, a straight cylindrical section, and a thin tubular section. The entire viscometer is integrally molded. The opening of the viscometer is fixedly connected to the outlet of the storage tank. Preferably, the opening and outlet of the viscometer are the same size. The thin tubular section extends out of the constant temperature chamber through a through hole. The stock solution flows out of the viscometer through the bottom port of the thin tubular section. The outer diameter of the thin tubular section gradually decreases in the direction away from the straight cylindrical section, while the inner diameter of the thin tubular section remains constant. The size of the inner diameter of the thin tubular section controls the flow rate of the stock solution. The larger the inner diameter, the faster the flow rate. The inner diameter of the thin tube section adopts the standard value specified in the industry. When the liquid storage tank and the viscometer are placed downward into the constant temperature box, the bottom edge of the connection part rests on the first fixed seat plate. The thin tube section enters the through hole and the outer wall of the thin tube section squeezes the sealing ring to form a seal at the connection between the thin tube section and the constant temperature box, preventing water leakage from the constant temperature box. Since the liquid storage tank and the constant temperature box are not fixedly connected, the liquid storage tank and the viscometer can be removed from the constant temperature box, which facilitates the maintenance and cleaning of the liquid storage tank, the constant temperature box and the viscometer.

[0014] Furthermore, the liquid storage tank can be a cuboid, for example, made of glass, and has a certain thickness and weight, so that it can overcome the buoyancy of water when placed in a constant temperature chamber.

[0015] Furthermore, the automatic control valve is located near the inverted conical section of the straight section. For example, the automatic control valve is a solenoid valve. When the automatic control valve opens, the raw liquid begins to move downward in the viscometer under the action of gravity.

[0016] Furthermore, each pair of sensors forms a group, with each viscometer corresponding to a group of sensors. Sensors within the same group are spaced apart from top to bottom. The upper sensor is positioned below the automatic control valve, directly opposite the upper mark of the viscometer, and is used to monitor the movement of the original liquid at the upper mark position. The lower sensor is directly opposite the lower mark of the viscometer, and is used to monitor the movement of the original liquid at the lower mark position. The sensors are infrared sensors, which are used to detect the movement of the original liquid in the viscometer in real time. Once the movement of the original liquid across the mark is detected, a signal is generated and transmitted to the controller. After receiving the signal, the controller starts or pauses the timer.

[0017] Furthermore, multiple temperature sensors can be arranged around the storage tank to monitor the temperature of the raw liquid from all angles, thereby improving the accuracy of the measurement.

[0018] Furthermore, the controller internally stores programs and has functions such as logic operations, data storage, sequential control, timing, counting, and arithmetic operations. The controller's control circuit can be implemented by simple programming by those skilled in the art, and is common knowledge in the field. The controller can be any of the following: PLC, DCS, or microcontroller.

[0019] Furthermore, the incubator is fixed to the support frame.

[0020] The working principle of the original liquid viscosity measuring device provided by this utility model is as follows:

[0021] The water temperature in the constant temperature chamber is set to 50℃. The stock solution is added to the storage tank, where the stock solution temperature is 80-90℃. The temperature sensor monitors the stock solution temperature in real time. When the stock solution cools to 50℃, the temperature sensor transmits a signal to the controller. The controller opens the automatic control valve, and the stock solution begins to move downwards in the viscometer under the action of gravity. When the stock solution flows past the upper mark of the viscometer, the upper sensor transmits a signal to the controller. The controller starts the timer and displays the start time on the timer. When the stock solution flows past the lower mark of the viscometer, the lower sensor transmits a signal to the controller. The controller transmits a signal to the timer, pauses the timer, and displays the end time on the timer. The time interval between the stock solution falling from the upper mark to the lower mark of the viscometer is calculated and displayed.

[0022] The beneficial effects of this utility model are:

[0023] This invention provides a device for measuring the viscosity of a stock solution. A storage tank for the stock solution is installed inside a constant temperature chamber, connected to a viscometer. A temperature sensor monitors the temperature of the stock solution. When the temperature drops to the desired level, an automatic control valve opens, allowing the stock solution to automatically enter the viscometer. This eliminates operational errors from manual cooling and other influencing factors during the cooling process, saving time for sample temperature control and improving analytical efficiency. No manual stirring is required; heat conduction between the stock solution and the constant temperature water lowers the stock solution temperature, avoiding bubbles generated by manual stirring. Throughout the measurement process, the stock solution is maintained at a constant temperature, improving measurement accuracy. The flow of the stock solution is automatically monitored and timed by a sensor, reducing errors from manual timing. The storage tank and constant temperature chamber are not fixedly connected, allowing the tank and viscometer to be removed from the chamber for easy maintenance and cleaning. The entire viscometer is integrally molded, improving its sealing and eliminating the influence of the viscometer itself on the sample flow rate. This invention provides a device for measuring the viscosity of a raw liquid, which changes the original temperature control method of the viscosity chamber, improves the accuracy and adjustability of the temperature control system, reduces the influence of temperature on the sample viscosity, improves data accuracy, and is beneficial to process control. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a stock solution viscosity measuring device according to the present invention.

[0025] Figure 2 This is a schematic diagram of a constant temperature chamber.

[0026] Figure 3 This is a schematic diagram of the liquid storage tank and viscometer.

[0027] Figure 4This is a top view of a raw liquid viscosity measuring device according to the present invention.

[0028] Figure 5 for Figure 4 Cross-sectional stereoscopic view along the AA direction.

[0029] Figure 6 This is a control block diagram of a stock solution viscosity measuring device according to the present invention.

[0030] Figure 7 This is a schematic diagram of a viscometer in the prior art.

[0031] Figure label:

[0032] 1-Constant temperature chamber, 101-Inner chamber, 102-Outer chamber, 103-Outlet, 104-Inlet, 105-Through hole, 106-Hanging hook, 1061-First fixed base plate, 1062-First limiting plate, 2-Liquid storage tank, 201-Connecting part, 3-Outlet, 4-Viscometer, 401-Inverted conical section, 402-Straight cylinder section, 403-Thin tube section, 5-Automatic control valve, 6-Temperature sensor, 7-Inductor, 8-Controller, 9-Timer, 10-Bracket. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] like Figure 1-6 As shown, the present invention provides a bulk solution viscosity measuring device, which includes a constant temperature chamber 1 and a storage tank 2 disposed inside the constant temperature chamber 1 for holding the bulk solution. The bottom of the storage tank 2 has a liquid outlet 3, which is connected to a viscometer 4. The viscometer 4 is equipped with an automatic control valve 5 for controlling the flow of the bulk solution. The bottom port of the viscometer 4 extends out of the constant temperature chamber 1. The storage tank 2 is equipped with a temperature sensor 6 for monitoring the temperature of the bulk solution. The outer wall of the constant temperature chamber 1 is equipped with a sensor 7 corresponding to the position of the viscometer 4. The temperature sensor 6 and the sensor 7 are both connected to the signal input terminal of the controller 8. The signal output terminal of the controller 8 is connected to the automatic control valve 5 and the timer 9, respectively.

[0035] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the constant temperature chamber 1 has a double-layer transparent glass structure. The constant temperature chamber 1 can be, for example, a flat cuboid shape. The top of the constant temperature chamber 1 is provided with an openable lid. The lid is connected to the constant temperature chamber 1, for example, by a hinge or pivot. The lid is used to reduce heat loss inside the constant temperature chamber 1.

[0036] like Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the constant temperature chamber 1 includes an inner chamber 101 and an outer chamber 102 disposed outside the inner chamber 101. The inner chamber 101 serves as a water-holding chamber, and a sandwich is formed between the inner chamber 101 and the outer chamber 102. A heating pipe wound around the outer wall of the inner chamber 101 is disposed within the sandwich. The heating pipe is used to heat the water inside the inner chamber 101. The heating pipe may be electrically heated. The bottom wall of the inner chamber 101 has a water outlet 103, a water inlet 104, and a through hole 105 for the viscometer 4 to extend through. A sealing ring is provided inside the hole 105. The through hole 105 is coaxial with the sealing ring. A circulating water pipe is connected between the outlet 103 and the inlet 104. A water pump for providing power for circulation and a water thermometer for measuring the circulating temperature are installed on the circulating water pipe. The water thermometer is interlocked with the power regulator of the heating tube to maintain a constant water temperature in the inner chamber 101. Circulating water flows out from the outlet 103 and enters from the inlet 104. Using circulating water for constant temperature effectively reduces errors caused by temperature changes during the test.

[0037] like Figure 2 As shown, the inner wall of the inner box 101 is provided with a plurality of suspension hooks 106. Preferably, each side wall of the inner box 101 is provided with a suspension hook 106. The suspension hook 106 is L-shaped and includes a first fixed base plate 1061 connected to the inner wall of the inner box 101 and a first limiting plate 1062 vertically connected to the first fixed base plate 1061.

[0038] like Figure 3 , Figure 4 , Figure 5 As shown, the top edge of the liquid storage tank 2 is provided with a connecting part 201. The connecting part 201 is located on the periphery of the liquid storage tank 2. The connecting part 201 is a folded edge formed by extending outward from the top edge of the liquid storage tank 2 to a certain length and then extending downward. In specific applications, the liquid storage tank 2 is placed in the constant temperature chamber 1. The connecting part 201 overlaps with the suspension hook 106. The bottom edge of the connecting part 201 is supported on the first fixed base plate 1061. The first fixed base plate 1061 is used to support the liquid storage tank 2. The downwardly extending part of the connecting part 201 is located inside the first limiting plate 1062. The first limiting plate 1062 limits the liquid storage tank 2 and prevents the liquid storage tank 2 from slipping off the first fixed base plate 1061.

[0039] like Figure 4 , Figure 5 As shown, there are multiple outlets 3, which are arranged sequentially at intervals along the length of the storage tank 2. Each outlet 3 is connected to a viscometer 4, and the raw liquid enters the viscometer 4 from the outlet 3.

[0040] like Figure 3 , Figure 5As shown, the viscometer 4 is a tubular body, comprising, from top to bottom, an inverted conical section 401, a straight cylindrical section 402, and a thin tubular section 403. The entire viscometer 4 is integrally formed. The opening of the viscometer 4 is fixedly connected to the outlet 3 of the liquid storage tank 2. Preferably, the opening of the viscometer 4 and the outlet 3 are the same size. The thin tubular section 403 extends out of the constant temperature chamber 1 through the through hole 105. The original liquid flows out of the viscometer 4 through the bottom port of the thin tubular section 403. The outer radial direction of the thin tubular section 403 gradually decreases away from the straight cylindrical section 402, while the inner diameter of the thin tubular section 403 remains constant. The size of the inner diameter of the thin tubular section 403 controls the flow of the original liquid. The flow rate is faster with a larger inner diameter. The inner diameter of the thin tube section 403 adopts the standard value specified in the industry. When the liquid storage tank 2 and the viscometer 4 are placed downward into the constant temperature chamber 1, the bottom edge of the connecting part 201 rests on the first fixed base plate 1061. The thin tube section 403 enters the through hole 105 and the outer wall of the thin tube section 403 squeezes the sealing ring, forming a seal at the connection between the thin tube section 403 and the constant temperature chamber 1 to prevent water leakage from the constant temperature chamber 1. Since the liquid storage tank 2 and the constant temperature chamber 1 are not fixedly connected, the liquid storage tank 2 and the viscometer 4 can be removed from the constant temperature chamber 1, which facilitates the maintenance and cleaning of the liquid storage tank 2, the constant temperature chamber 1 and the viscometer 4.

[0041] like Figure 3 , Figure 5 As shown, the liquid storage tank 2 can be a cuboid, and the material of the liquid storage tank 2 can be glass. The liquid storage tank 2 has a certain thickness and weight so that it can overcome the buoyancy of water when placed in the constant temperature chamber 1.

[0042] like Figure 3 , Figure 5 As shown, the automatic control valve 5 is located near the inverted conical section 401 in the straight section 402. The automatic control valve 5 is, for example, a solenoid valve. When the automatic control valve 5 is opened, the raw liquid begins to move downward in the viscometer 4 under the action of gravity.

[0043] like Figure 4 , Figure 6 As shown, each pair of sensors 7 forms a group, and each viscometer 4 corresponds to a group of sensors. The sensors 7 in the same group are arranged at intervals from top to bottom. The upper sensor is located below the automatic control valve 5 and is directly opposite the upper mark of the viscometer 4. It is used to monitor the movement of the original liquid at the position of the upper mark. The lower sensor is directly opposite the lower mark of the viscometer 4 and is used to monitor the movement of the original liquid at the position of the lower mark. The sensor 7 is an infrared sensor. The infrared sensor is used to detect the movement of the original liquid in the viscometer 4 in real time. Once the movement of the original liquid across the mark is detected, a signal is generated and transmitted to the controller 8. After receiving the signal, the controller 8 starts or stops the timer 9.

[0044] like Figure 5As shown, there can be multiple temperature sensors 6 arranged around the liquid storage tank 2 to monitor the temperature of the raw liquid from all directions, thereby improving the accuracy of the measurement.

[0045] like Figure 6 As shown, the controller 8 internally stores a program and has functions such as logic operation, data storage, sequential control, timing, counting and arithmetic operation. The control circuit of the controller 8 can be implemented by those skilled in the art through simple programming, which is common knowledge in the field. The controller 8 can be any of the following: PLC, DCS or microcontroller.

[0046] like Figure 1 , Figure 2 , Figure 5 As shown, the constant temperature chamber 1 is fixed on the bracket 10.

[0047] The working principle of the original liquid viscosity measuring device provided by this utility model is as follows:

[0048] The water temperature in the constant temperature chamber 1 is set to 50℃. The stock solution is added to the storage tank 2, where the stock solution temperature is 80-90℃. The temperature sensor 6 monitors the stock solution temperature in real time. When the stock solution cools down to 50℃ (the viscosity value of the stock solution at 50℃ is an important reference value for adjusting the process), the temperature sensor 6 transmits a signal to the controller 8. The controller 8 opens the automatic control valve 5, and the stock solution begins to move downward in the viscometer 4 under the action of gravity. When the stock solution flows past the upper mark of the viscometer 4, the upper sensor transmits a signal to the controller 8, and the controller 8 starts the timer 9 to start timing and displays the start time on the timer 9. When the stock solution flows past the lower mark of the viscometer 4, the lower sensor transmits a signal to the controller 8, and the controller 8 transmits a signal to the timer 9 to stop timing and displays the end time on the timer 9. The time interval between the stock solution falling from the upper mark to the lower mark of the viscometer 4 is calculated and displayed.

[0049] The preferred embodiments of this utility model have been described above; however, the above description is not intended to be limiting. Those skilled in the art can make many changes or modifications to this utility model without departing from its spirit and scope. Such changes or modifications should be included within the scope of the appended claims.

Claims

1. A device for measuring the viscosity of a raw liquid, characterized in that, It includes a constant temperature chamber (1) and a storage tank (2) set inside the constant temperature chamber (1) for holding the original liquid. The bottom of the storage tank (2) has an outlet (3) connected to a viscometer (4). The viscometer (4) is equipped with an automatic control valve (5) for controlling the flow of the original liquid. The bottom port of the viscometer (4) extends out of the constant temperature chamber (1). The storage tank (2) is equipped with a temperature sensor (6) for monitoring the temperature of the original liquid. The outer wall of the constant temperature chamber (1) is equipped with a sensor (7) corresponding to the position of the viscometer (4). The temperature sensor (6) and the sensor (7) are both connected to the signal input terminal of the controller (8). The signal output terminal of the controller (8) is connected to the automatic control valve (5) and the timer (9) respectively.

2. The device for measuring the viscosity of the original solution according to claim 1, characterized in that, The constant temperature chamber (1) has a double-layer transparent glass structure. The top of the constant temperature chamber (1) is equipped with an openable lid. The constant temperature chamber (1) includes an inner chamber (101) and an outer chamber (102) located outside the inner chamber (101). The inner chamber (101) serves as a water-filled chamber. An interlayer is formed between the inner chamber (101) and the outer chamber (102). A heating tube wrapped around the outer wall of the inner chamber (101) is provided in the interlayer. The bottom wall of the inner chamber (101) has an outlet (103), an inlet (104), and a through hole (105) for the viscometer (4) to extend. A sealing ring is provided in the through hole (105).

3. The device for measuring the viscosity of the original solution according to claim 2, characterized in that, The inner wall of the inner box (101) is provided with a plurality of suspension hooks (106). Each side wall of the inner box (101) is provided with a suspension hook (106). The suspension hook (106) is L-shaped and includes a first fixed base plate (1061) connected to the inner wall of the inner box (101) and a first limiting plate (1062) perpendicularly connected to the first fixed base plate (1061).

4. The device for measuring the viscosity of the original solution according to claim 3, characterized in that, The top edge of the liquid storage tank (2) is provided with a connecting part (201). The connecting part (201) is located on the periphery of the liquid storage tank (2). The connecting part (201) is a folded edge formed by extending outward from the top edge of the liquid storage tank (2) to a certain length and then extending downward. The connecting part (201) overlaps with the hanging hook (106). The bottom edge of the connecting part (201) is supported on the first fixed base plate (1061). The downward extension of the connecting part (201) is located inside the first limiting plate (1062). The first limiting plate (1062) limits the liquid storage tank (2).

5. The device for measuring the viscosity of the original solution according to claim 1, characterized in that, There are multiple outlets (3), and the multiple outlets (3) are arranged sequentially at intervals along the length of the storage tank (2). Each outlet (3) is connected to a viscometer (4).

6. The device for measuring the viscosity of the original solution according to claim 2, characterized in that, The viscometer (4) is a tubular body. From top to bottom, the viscometer (4) includes an inverted conical section (401), a straight cylindrical section (402), and a thin tube section (403). The entire viscometer (4) is integrally formed. The opening of the viscometer (4) is fixedly connected to the outlet (3) of the liquid storage tank (2). The thin tube section (403) extends out of the constant temperature chamber (1) through the through hole (105). The outer radial direction of the thin tube section (403) gradually decreases in the direction away from the straight cylindrical section (402).

7. The device for measuring the viscosity of the original solution according to claim 6, characterized in that, The automatic control valve (5) is located in the straight section (402) near the inverted conical section (401).

8. The device for measuring the viscosity of the original solution according to claim 1, characterized in that, Two sensors (7) form a group, and each viscometer (4) corresponds to a group of sensors (7). The sensors (7) in the same group are arranged at intervals from top to bottom. The upper sensor (7) is located below the automatic control valve (5). The upper sensor (7) is directly opposite the upper mark of the viscometer (4) and is used to monitor the movement of the original liquid at the position of the upper mark. The lower sensor (7) is directly opposite the lower mark of the viscometer (4) and is used to monitor the movement of the original liquid at the position of the lower mark. The sensor (7) is an infrared sensor (7).

9. The device for measuring the viscosity of the original solution according to claim 1, characterized in that, The controller (8) can be any one of PLC, DCS, or microcontroller.

10. The device for measuring the viscosity of the original solution according to claim 1, characterized in that, The constant temperature chamber (1) is fixed on the bracket (10).

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