A device and method for measuring freezing point depression

Abstract

The present invention relates to the field of chemical technology, and specifically discloses a device and a method for measuring the freezing point depression, comprising: a hood shell, a control system and a measuring mechanism; the control system is installed on the right side of the outside of the hood shell, and the control system and the hood shell are electrically connected; the measuring mechanism is arranged below the hood shell, and the measuring mechanism comprises: a bottom shell, a track platform, a clamping mechanical arm, a test tube rack, a liquid injection component, a solid addition component, a cooling bath manufacturing device, a measuring component, a test tube cleaning and drying device, a first pump body, a second pump body and a sensor. The device and the method for measuring the freezing point depression use full-process automated operation to measure the freezing point, more stably control the experimental environment and process, ensure the consistency of the experimental operation, shorten the measurement time of a single sample, and improve the overall experimental efficiency.

Description

Technical Field

[0001] The invention relates to the field of chemical technology, in particular to a device and a method for measuring freezing point depression. Background Art

[0002] In the field of chemical research, freezing point measurement has many applications. In terms of substance purity identification, the freezing point of pure substances is fixed, while that of mixtures varies with the impurity content. For example, in organic synthesis, the purity is determined by comparing the freezing point of new compounds with the theoretical value. When determining the molar mass of a substance, the freezing point depression formula of the solution is used. The solvent-related constants are known, and the mass molar concentration is calculated by measuring the freezing point depression value of the solution, and then the molar mass of the solute is obtained. In the field of materials science, for alloy performance research, the alloy freezing point is related to the composition ratio, which affects the microstructure and performance. For example, the freezing points of aluminum alloys with different composition ratios are different. This is used to determine the optimal ratio of aluminum alloys for aerospace. In the processing of polymer materials, such as PVC, the glass transition temperature affects the processing technology, and the processing temperature needs to be controlled within an appropriate range. In the field of food science and food quality control, the proportion of food ingredients affects the freezing point. For example, the freezing point of dairy products is affected by ingredients or contamination. The freezing point of the raw material mixture in ice cream production can be used to control product quality. In food preservation research, understanding the freezing point of food helps determine the optimal refrigeration or freezing temperature. For example, the freezing temperature of meat is set according to its freezing point to maintain quality, reduce nutrient loss and inhibit microbial growth.

[0003] In the prior art, freezing point measurement is performed manually by experimenters. Since manual operation relies on the skills and experience of the experimenters and is easily affected by human factors, there may be differences in the manual operations of different experimenters, resulting in poor repeatability of experimental results and difficulty in standardized management, which leads to deviations in measurement results. In addition, the manual operation process is cumbersome and requires experimenters to constantly monitor and adjust experimental conditions, which consumes a lot of time. When a large number of samples need to be measured, the efficiency problem of manual operation is particularly prominent. Summary of the invention

[0004] The object of the present invention is to provide a device and a method for measuring freezing point depression, so as to solve the technical problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for measuring the freezing point depression, comprising: a hood shell, a control system and a measuring mechanism; the control system is installed on the outer right side of the hood shell, and the control system and the hood shell are electrically connected; the measuring mechanism is arranged below the hood shell.

[0006] Preferably, the measuring mechanism includes: a bottom shell, a track platform, a clamping robot arm, a test tube rack, a liquid injection component, a solid adding component, a cooling bath manufacturing device, a measuring component, a test tube cleaning and drying device, a first pump body, a second pump body and a sensor; the bottom shell is arranged at the bottom of the hood shell along the left-right direction, and the bottom shell is electrically connected to the control system; the track platform is installed at the front side of the top end of the bottom shell along the left-right direction, and the track platform is electrically connected to the control system; the clamping robot arm is installed at the top of the moving end of the track platform, and the clamping robot arm is electrically connected to the control system; the test tube rack is arranged at the right rear side of the top end of the bottom shell; the liquid injection component is arranged at the top of the bottom shell and on the left side of the test tube rack; the solid adding component is arranged at the The top of the bottom shell is located on the left side of the liquid injection component; the cooling bath manufacturing equipment is arranged at the top of the bottom shell and is located on the left side of the solid adding component, and the cooling bath manufacturing equipment is electrically connected to the control system; the measuring component is arranged at the top of the bottom shell and is located on the left side of the cooling bath manufacturing equipment; the test tube cleaning and drying equipment is arranged on the left rear side of the top of the bottom shell, and the test tube cleaning and drying equipment is electrically connected to the control system; the first pump body is installed in the left end groove in the middle of the front side of the bottom shell, and the first pump body is electrically connected to the control system; the second pump body is installed in the right end groove in the middle of the front side of the bottom shell, and the second pump body is electrically connected to the control system; the sensor is installed at the top of the bottom shell and is located in front of the measuring component, and the sensor is electrically connected to the control system.

[0007] Preferably, the liquid injection component includes: a first mounting frame, a joint valve, a storage tank, a third pump body, a slot frame, an electric telescopic rod and a lifting frame; the first mounting frame is arranged at the top of the bottom shell in the up-down direction and is located on the left side of the test tube rack; the joint valve is installed at the top of the bottom shell and is located at the inner side and lower side of the first mounting frame, the joint valve is connected to the second pump body through a pipeline, and the joint valve is electrically connected to the control system; the storage tank is installed at the rear side of the top of the first mounting frame, and the storage tank and the first pump body are connected through a pipeline; the third pump body is installed at the front side of the top of the first mounting frame, the third pump body and the storage tank are connected through a pipeline, and the third pump body is electrically connected to the control system; the slot frame is installed at the front side of the top of the first mounting frame in the left-right direction; the number of the electric telescopic rods is two, and the two electric telescopic rods are respectively installed on the left and right sides of the middle of the top of the slot frame, and the electric telescopic rod is electrically connected to the control system; the lifting frame is plugged into the bottom of the slot frame, and the telescopic ends of the left and right electric telescopic rods extend out of the lower surface of the slot frame and are connected to the left and right sides of the top of the lifting frame.

[0008] Preferably, the liquid injection component also includes: a slot seat, a lifting seat, a joint, a limiting groove, a slider, a first connecting rod, a first motor, a rotating rod and a second connecting rod; the slot seat is arranged in the middle of the bottom end of the lifting frame in the up-down direction; the lifting seat is plugged into the bottom of the slot seat in the up-down direction; the joint is installed on the front side of the lifting seat, and the joint and the third pump body are connected by a pipeline; the limiting groove is opened at the inner top of the slot seat in the up-down direction; the slider is plugged into the inner cavity of the limiting groove; one end of the first connecting rod is rotatably connected to the inner side of the slider through a rotating shaft; the first motor is installed at the rear bottom end of the slot seat, the rotating end of the first motor extends to the front side of the slot seat, and the first motor is electrically connected to the control system; one end of the rotating rod is fixedly connected to the front side of the rotating end of the first motor, and the other end of the rotating rod is rotatably connected to the bottom end of the first connecting rod through a rotating shaft; one end of the second connecting rod is rotatably connected to the inner side of the lifting seat through a rotating shaft, and the other end of the second connecting rod is rotatably connected to the other end of the first connecting rod through a rotating shaft.

[0009] Preferably, the solid adding component includes: a first fixed frame, a vertical lifting platform, a mixing module, a weighing device, a test tube fixing seat, a horizontal moving platform, a second fixed frame, a solid adding device and a second motor; the first fixed frame is arranged on the top of the bottom shell in the up-down direction and is located on the left side of the first mounting frame; the vertical lifting platform is installed on the front side of the top end of the first fixed frame in the up-down direction, and the vertical lifting platform is electrically connected to the control system; the mixing module is installed on the front side of the moving end of the vertical lifting platform, and the mixing module is electrically connected to the control system; the weighing device is installed on the top of the bottom shell and is located below the front side of the first fixed frame, and the weighing device and the control system are electrically connected. The control system is electrically connected; the test tube fixing seat is arranged on the top of the weighing device; the horizontal moving platform is installed at the top of the bottom shell in the left-right direction and is located on the left side of the weighing device, and the horizontal moving platform is electrically connected to the control system; the second fixed frame is installed at the top of the moving end of the horizontal moving platform in the up-down direction; the solid adding device is rotatably connected to the inner top of the second fixed frame through a rotating shaft, and the solid adding device is electrically connected to the control system; the second motor is installed on the front top of the second fixed frame, the rotating end of the second motor extends into the inner side of the second fixed frame and is connected to the axis of the solid adding device, and the second motor is electrically connected to the control system.

[0010] Preferably, the measuring component includes: a water tank, a second mounting frame, a shell, a stirring rod, a third motor, a transmission belt, a guide rod, a mounting seat, a roller seat, a screw assembly, a cylinder, a bracket, a sealing plate, a rotating shaft mounting seat, a fourth motor, a bevel gear assembly and a gear assembly; the water tank is embedded in the top of the bottom shell and is located at the lower left side of the cooling bath manufacturing equipment, and the rear side of the water tank extends out of the bottom shell; the second mounting frame is installed at the rear side of the inner cavity of the water tank along the up-down direction; the shell is installed on the top of the second mounting frame along the up-down direction; the stirring rod is rotatably connected to the front side of the bottom end of the shell through a bearing along the up-down direction, and the axis of the stirring rod extends into the inner cavity of the shell; the third motor is arranged at the rear side of the bottom end of the shell, and the rotating end of the third motor extends into the inner cavity of the shell, and the third motor is electrically connected to the control system; one side of the transmission belt is fixedly installed on the rotating end of the third motor, and the other side of the transmission belt is connected to the top of the stirring rod; the guide rod is installed at the inner front end of the second mounting frame along the up-down direction; the mounting seat is sleeved on The outside of the guide rod; the number of the roller seats is two, and the two roller seats are respectively installed at the left and right ends of the rear side of the mounting seat, and the roller seats are in contact with the second mounting frame; the screw assembly is arranged at the inner rear end of the second mounting frame along the up and down direction, and the screw nut in the screw assembly is rotatably connected to the inner rear side of the mounting seat through a bearing; the cylinder is fixedly installed at the inner front end of the mounting seat; the bracket is arranged at the front side of the inner cavity of the water tank along the up and down direction, and the top of the bracket extends into the bottom of the inner cavity of the cylinder; the sealing plate is arranged at the top of the bracket; the shaft mounting seat is installed at the top of the second mounting frame; the fourth motor is installed on the left side of the top of the second mounting frame, the rotating end of the fourth motor is connected to the axis of the shaft mounting seat, and the fourth motor is electrically connected to the control system; the bevel gear at one end of the bevel gear assembly is fixedly connected to the top of the axis of the screw in the bracket; the gear at one end of the gear assembly is installed outside the axis of the shaft mounting seat, and the gear at the other end of the gear assembly is connected to the bevel gear at the other end of the bevel gear assembly through the shaft seat.

[0011] Preferably, the outer diameter of the sealing plate is matched with the inner diameter of the cylinder.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The test tube inside the test tube rack is clamped and grabbed by the clamping mechanical arm. The track platform drives the clamping mechanical arm to move from right to left on the top of the bottom shell, so that the clamping mechanical arm clamps the test tube and moves it to the front side of the liquid injection component. The clamping mechanical arm clamps and moves the test tube to the inside of the first mounting frame. The first motor drives the rotating rod to drive the first connecting rod to rotate downward on the inside of the slider, so that the slider moves downward in the inner cavity of the limit slot. The first connecting rod drives one end of the second connecting rod to move downward and drives the lifting seat to move downward in the inner cavity of the slot seat with the cooperation of the second connecting rod, so that the lifting seat drives the joint to move downward and insert into the test tube. The third pump body stores The solution stored in the tank is quantitatively pumped into the test tube through the joint, the track platform and the clamping robot cooperate to move the test tube and insert it into the test tube holder, the horizontal moving platform drives the second fixing frame to move to the right, so that the solid adding device moves to the top of the test tube, the second motor drives the solid adding device to rotate inside the second fixing frame to a vertical downward state, the solid adding device adds solid solute to the test tube, the weighing device weighs the test tube inside the test tube holder to ensure the quantitative addition of the solute, after the addition is completed, the vertical lifting platform drives the mixing module to move downward and insert it into the test tube, and the mixing module vibrates and mixes the solute and solvent inside the test tube.

[0014] 2. The test tube is moved and inserted into the outside of the stirring rod through the cooperation of the track platform and the clamping robot arm. The fourth motor drives the mounting seat to move upward on the outside of the guide rod through the screw assembly under the transmission of the shaft mounting seat, the gear assembly and the bevel gear assembly, so that the cylinder moves upward to the outside of the test tube. The cooling bath manufacturing equipment fills its internal cooling bath into the cylinder. The third motor drives the stirring rod to rotate slowly inside the test tube under the transmission of the transmission belt to slowly stir the solvent to cool the solvent inside the test tube. The sensor observes and measures the temperature of the test tube inside the cylinder. When crystals begin to precipitate in the solvent, the sensor records the temperature value at this moment to the solidification point of the solution. The clamping robot arm and the track platform cooperate to move the measured test tube to the inside of the test tube cleaning and drying equipment, and the test tube cleaning and drying equipment rinses and dries the test tube.

[0015] In summary, the present invention adopts full-process automated operation to measure the freezing point, performs more stable control over the experimental environment and process, ensures the consistency of the experimental operation, shortens the measurement time of a single sample, and improves the overall experimental efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the measuring mechanism;

[0018] Figure 3 for Figure 2Exploded view of the liquid injection component;

[0019] Figure 4 for Figure 3 A magnified image of point A;

[0020] Figure 5 for Figure 2 Solid added component exploded view;

[0021] Figure 6 for Figure 2 Exploded view of the liquid injection component;

[0022] Figure 7 for Figure 6 Enlarged view of point B.

[0023] In the figure: 1, hood shell, 2, control system, 3, measuring mechanism, 31, bottom shell, 32, track platform, 33, clamping robot arm, 34, test tube rack, 35, cooling bath manufacturing equipment, 36, test tube cleaning and drying equipment, 37, first pump body, 38, second pump body, 39, sensor, 4, liquid injection component, 41, first mounting frame, 42, joint valve, 43, storage tank, 44, third pump body, 45, slot rack, 46, electric telescopic rod, 47, lifting frame, 48, slot seat, 49, lifting seat, 410, joint, 411, limit groove, 412, slider, 413, first connecting rod, 414, first motor, 415, rotating rod, 416, second connecting rod Connecting rod, 5, solid adding component, 51, first fixed frame, 52, vertical lifting platform, 53, mixing module, 54, weighing device, 55, test tube fixing seat, 56, horizontal moving platform, 57, second fixed frame, 58, solid adding device, 59, second motor, 6, measuring component, 61, water tank, 62, second mounting frame, 63, housing, 64, stirring rod, 65, third motor, 66, transmission belt, 67, guide rod, 68, mounting seat, 69, roller seat, 610, screw assembly, 611, cylinder, 612, bracket, 613, sealing plate, 614, shaft mounting seat, 615, fourth motor, 616, bevel gear assembly, 617, gear assembly. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-Figure 7The present invention provides a technical solution: a device for measuring freezing point depression, comprising: a hood shell 1, a control system 2 and a measuring mechanism 3, wherein an air purification device and an electric sealing door are arranged outside the hood shell 1; the control system 2 is installed on the right side outside the hood shell 1, the control system 2 and the hood shell 1 are electrically connected, and a preset program is arranged inside the control system 2, which can be manually operated or automatically operated by the staff according to actual needs to realize the control and operation of the electrical components inside the device; the measuring mechanism 3 is arranged below the hood shell 1.

[0026] As a preferred solution, further, Figure 2As shown, the measuring mechanism 3 includes: a bottom shell 31, a track platform 32, a clamping robot 33, a test tube rack 34, a liquid injection component 4, a solid adding component 5, a cooling bath manufacturing device 35, a measuring component 6, a test tube cleaning and drying device 36, a first pump body 37, a second pump body 38 and a sensor 39; the bottom shell 31 is arranged at the bottom of the hood shell 1 along the left-right direction, the bottom shell 31 is electrically connected to the control system 2, and an electric control device is arranged inside the bottom shell 31 to supply power to the electrical components inside the device; the track platform 32 is installed on the top front side of the bottom shell 31 along the left-right direction, the track platform 32 is electrically connected to the control system 2, and the track The track platform 32 can drive the clamping mechanical arm 33 to move horizontally in the left and right directions, and adjust the speed according to actual needs; the clamping mechanical arm 33 is installed on the top of the moving end of the track platform 32, and the clamping mechanical arm 33 is electrically connected to the control system 2. The clamping mechanical arm 33 can clamp the test tube, and different types of sensors are installed inside the clamping mechanical arm 33 according to actual needs to collect the test tube temperature and image data at close range; the test tube rack 34 is arranged at the right rear side of the top of the bottom shell 31, and the test tube rack 34 adopts a front and back double row arrangement, and can store multiple test tubes inside; the liquid injection component 4 is arranged at the top of the bottom shell 31 and is located on the left side of the test tube rack 34. side; the solid adding component 5 is arranged at the top of the bottom shell 31 and is located on the left side of the liquid injection component 4; the cooling bath manufacturing device 35 is arranged at the top of the bottom shell 31 and is located on the left side of the solid adding component 5, the cooling bath manufacturing device 35 is electrically connected to the control system 2, and the cooling bath manufacturing device 35 can manufacture a cooling bath of an ice-water mixture inside; the measuring component 6 is arranged at the top of the bottom shell 31 and is located on the left side of the cooling bath manufacturing device 35; the test tube cleaning and drying device 36 is arranged on the left rear side of the top of the bottom shell 31, the test tube cleaning and drying device 36 is electrically connected to the control system 2, and the test tube cleaning and drying device 36 can clean the internal test tube and drying operations; the first pump body 37 is installed in the groove at the left end of the middle front side of the bottom shell 31, the first pump body 37 is electrically connected to the control system 2, and the first pump body 37 can pump 7 external solution into the storage tank 43; the second pump body 38 is installed in the groove at the right end of the middle front side of the bottom shell 31, the second pump body 38 is electrically connected to the control system 2, and the second pump body 38 discharges the waste liquid after flushing the inside of the joint valve 42 to the outside; the sensor 39 is installed at the top of the bottom shell 31 and is located on the front side of the measuring component 6, the sensor 39 is electrically connected to the control system 2, and the sensor 39 observes and measures the temperature of the test tube inside the cylinder 611.

[0027] As a preferred solution, further, Figure 3 and Figure 4As shown, the liquid injection component 4 includes: a first mounting frame 41, a joint valve 42, a storage tank 43, a third pump body 44, a slot frame 45, an electric telescopic rod 46, a lifting frame 47, a slot seat 48, a lifting seat 49, a joint 410, a limit groove 411, a slider 412, a first connecting rod 413, a first motor 414, a rotating rod 415 and a second connecting rod 416; the first mounting frame 41 is arranged on the top of the bottom shell 31 along the up and down direction and is located on the left side of the test tube rack 34; the joint valve 42 is installed on the top of the bottom shell 31 and is located at the lower inner side of the first mounting frame 41, the joint valve 42 is connected to the second pump body 38 through a pipeline, the joint valve 42 is electrically connected to the control system 2, and the joint valve 42 The opening and closing are controlled by the control system 2; the storage tank 43 is installed on the rear side of the top of the first mounting frame 41, and the storage tank 43 and the first pump body 37 are connected by a pipeline; the third pump body 44 is installed on the front side of the top of the first mounting frame 41, and the third pump body 44 and the storage tank 43 are connected by a pipeline, and the third pump body 44 is electrically connected to the control system 2, and the third pump body 44 can pump the solvent stored in the storage tank 43 into the inside of the joint 410; the slot rack 45 is installed on the front side of the top of the first mounting frame 41 along the left and right directions; the number of the electric telescopic rods 46 is two, and the two electric telescopic rods 46 are respectively installed on the left and right sides of the middle of the top of the slot rack 45, and the electric telescopic rods 46 are electrically connected to the control system 2, The telescopic rod 46 drives the lifting frame 47 to move up and down at the bottom of the slot frame 45 by its own extension and contraction; the lifting frame 47 is plugged into the bottom of the slot frame 45, and the telescopic ends of the left and right electric telescopic rods 46 extend out of the lower surface of the slot frame 45 and are connected to the left and right sides of the top of the lifting frame 47; the slot seat 48 is arranged in the middle of the bottom end of the lifting frame 47 along the up-down direction; the lifting seat 49 is plugged into the bottom of the slot seat 48 along the up-down direction, and the lifting seat 49 can move up and down at the bottom of the slot seat 48; the joint 410 is installed on the front side of the lifting seat 49, and the joint 410 and the third pump body 44 are connected by a pipeline; the limiting groove 411 is opened at the inner top of the slot seat 48 along the up-down direction; the slider 412 is plugged into In the inner cavity of the limiting groove 411, the slider 412 can move up and down in the inner cavity of the limiting groove 411; one end of the first connecting rod 413 is rotatably connected to the inner side of the slider 412 through a rotating shaft, and the first connecting rod 413 can swing clockwise or counterclockwise on the inner side of the slider 412; the first motor 414 is installed at the rear bottom end of the slot seat 48, and the rotating end of the first motor 414 extends to the front side of the slot seat 48. The first motor 414 is electrically connected to the control system 2, and the first motor 414 can drive the rotating rod 415 to rotate circumferentially; one end of the rotating rod 415 is fixedly connected to the front side of the rotating end of the first motor 414, and the other end of the rotating rod 415 is rotatably connected to the bottom end of the first connecting rod 413 through a rotating shaft;One end of the second connecting rod 416 is rotatably connected to the inner side of the lifting seat 49 via a rotating shaft, and the other end of the second connecting rod 416 is rotatably connected to the other end of the first connecting rod 413 via a rotating shaft, and the second connecting rod 416 can swing clockwise or counterclockwise inside the lifting seat 49.

[0028] As a preferred solution, further, Figure 5 As shown, the solid adding component 5 includes: a first fixed frame 51, a vertical lifting platform 52, a mixing module 53, a weighing device 54, a test tube fixing seat 55, a horizontal moving platform 56, a second fixed frame 57, a solid adding device 58 and a second motor 59; the first fixed frame 51 is arranged at the top of the bottom shell 31 along the up-down direction and is located on the left side of the first mounting frame 41; the vertical lifting platform 52 is installed at the front side of the top of the first fixed frame 51 along the up-down direction, and the vertical lifting platform 52 is electrically connected to the control system 2; the mixing module 53 is installed at the front side of the moving end of the vertical lifting platform 52, and the mixing module 53 is electrically connected to the control system 2; the weighing device 54 is installed at the top of the bottom shell 31 and is located below the front side of the first fixed frame 51, and the weighing device 54 is electrically connected to the control system 2, and the weighing device 54 weighs the test tube inside the test tube fixing seat 55 to ensure the quantitative addition of the solute, and accurately monitors the weight change of the test tube in real time. Control the amount of solute added to meet the experimental requirements; the test tube fixing seat 55 is set on the top of the weighing device 54; the horizontal moving platform 56 is installed at the top of the bottom shell 31 in the left-right direction and is located on the left side of the weighing device 54, and the horizontal moving platform 56 is electrically connected to the control system 2; the second fixed frame 57 is installed at the top of the moving end of the horizontal moving platform 56 in the up-down direction; the solid adding device 58 is rotatably connected to the inner top of the second fixed frame 57 through a rotating shaft, the solid adding device 58 is electrically connected to the control system 2, and the solid adding device 58 can add the internal solid solute to the inside of the test tube below; the second motor 59 is installed on the front top of the second fixed frame 57, the rotating end of the second motor 59 extends into the inner side of the second fixed frame 57 and is connected to the axis of the solid adding device 58, the second motor 59 is electrically connected to the control system 2, and the second motor 59 can drive the solid adding device 58 to rotate on the inner side of the second fixed frame 57.

[0029] As a preferred solution, further, Figure 6 and Figure 7As shown, the measuring component 6 includes: a water tank 61, a second mounting frame 62, a shell 63, a stirring rod 64, a third motor 65, a transmission belt 66, a guide rod 67, a mounting seat 68, a roller seat 69, a screw assembly 610, a cylinder 611, a bracket 612, a sealing plate 613, a rotating shaft mounting seat 614, a fourth motor 615, a bevel gear assembly 616 and a gear assembly 617; the water tank 61 is embedded in the top of the bottom shell 31 and is located at the lower left side of the cooling bath manufacturing equipment 35, and the rear side of the water tank 61 extends out of the bottom shell 31; the second mounting frame 62 is installed on the rear side of the inner cavity of the water tank 61 along the up-down direction; the shell 63 is installed on the top of the second mounting frame 62 along the up-down direction; the stirring rod 64 is passed through the bottom shell 31 along the up-down direction. The third motor 65 is arranged on the rear side of the bottom end of the shell 63, and the rotating end of the third motor 65 extends into the inner cavity of the shell 63. The third motor 65 is electrically connected to the control system 2, and the third motor 65 can drive the pulley on one side of the transmission belt 66 to rotate; one side of the transmission belt 66 is fixedly installed on the rotating end of the third motor 65, and the other side of the transmission belt 66 is connected to the top of the stirring rod 64. The transmission belt 66 adopts a structure in which the belt is sleeved on the outside of the pulleys on the front and rear sides; the guide rod 67 is installed on the inner front end of the second mounting frame 62 in the up and down direction; the mounting seat 68 is sleeved on the outside of the guide rod 67, and the mounting seat 68 can be The outside of the rail rod 67 moves up and down; there are two roller seats 69, which are respectively mounted on the left and right ends of the rear side of the mounting seat 68, and the roller seats 69 are in contact with the second mounting frame 62, and the roller seats 69 move up and down along the front side of the second mounting frame 62; the screw assembly 610 is arranged at the inner rear end of the second mounting frame 62 along the up and down direction, and the screw nut in the screw assembly 610 is rotatably connected to the inner rear side of the mounting seat 68 through a bearing, and the screw rod in the screw assembly 610 is arranged along the up and down direction and the screw nut is screwed on the outside of the screw rod; the cylinder 611 is fixedly mounted on the inner front end of the mounting seat 68, and the cylinder 611 is made of transparent material; the bracket 612 is arranged at the front side of the inner cavity of the water tank 61 along the up and down direction, and the bracket 61 2 extends into the bottom of the inner cavity of the cylinder 611; the sealing plate 613 is arranged at the top of the bracket 612, and the outer diameter of the sealing plate 613 is adapted to the inner diameter of the cylinder 611; the shaft mounting seat 614 is installed on the top of the second mounting frame 62; the fourth motor 615 is installed on the left side of the top of the second mounting frame 62, the rotating end of the fourth motor 615 is connected to the axis of the shaft mounting seat 614, the fourth motor 615 is electrically connected to the control system 2, and the fourth motor 615 can drive the internal shaft of the shaft mounting seat 614 to rotate clockwise or counterclockwise; the bevel gear at one end of the bevel gear assembly 616 is fixedly connected to the top of the axis of the lead screw in the bracket 612, and the bevel gear assembly 616 adopts a 90-degree meshing setting of the bevel gears on the left and right sides;The gear at one end of the gear assembly 617 is mounted outside the axis of the rotating shaft mounting seat 614, and the gear at the other end of the gear assembly 617 is connected to the bevel gear at the other end of the bevel gear assembly 616 through the rotating shaft seat. The gear assembly 617 adopts a front and rear gear meshing arrangement. ;

[0030] Here’s how it works:

[0031] Step 1: The staff performs the initial preparation of the equipment and accurately docks the first pump body 37 with the container containing the solution. After the docking is completed, the first pump body 37 pumps the external solution into the storage tank 43. The staff opens the sealed door of the hood shell 1 to put the solute into the solid addition device 58:

[0032] Step 2: The clamping robot arm 33 clamps and grabs the test tube inside the test tube rack 34, and the track platform 32 drives the clamping robot arm 33 to move from right to left on the top of the bottom shell 31;

[0033] Step 3: The clamping robot arm 33 moves the test tube to the inside of the first mounting frame 41, and the first motor 414 drives the rotating rod 415 to rotate, so that the rotating rod 415 drives the first connecting rod 413 to rotate downward inside the slider 412, and the slider 412 moves downward in the inner cavity of the limiting groove 411, so that the first connecting rod 413 drives one end of the second connecting rod 416 to move downward, and drives the lifting seat 49 to move downward in the inner cavity of the slot seat 48 with the cooperation of the second connecting rod 416, so that the lifting seat 49 drives the joint 410 to move downward and insert into the test tube, and the third pump body 44 pumps the storage solution in the storage tank 43 into the test tube through the joint 410 in a quantitative manner;

[0034] Step 4: After the solution is injected, the first motor 414 drives the rotating rod 415 to continue to rotate, and drives the lifting seat 49 to drive the joint 410 to move upward under the cooperation of the first connecting rod 413 and the second connecting rod 416, so that the joint 410 is disconnected from the test tube, and the clamping robot 33 clamps the test tube to the outside of the first mounting frame 41, and the electric telescopic rod 46 drives the lifting frame 47 to move downward inside the slot frame 45, so that the lifting frame 47 moves the joint 410 downward and docks with the joint valve 42 under the cooperation of the slot seat 48 and the lifting seat 49, and the staff pumps the cleaning agent from the first pump body 37 into the storage tank 43, and pumps the cleaning agent inside the storage tank 43 from the joint 410 into the joint valve 42 through the third pump body 44, so as to flush the storage tank 43, the third pump body 44 and the joint 410 and the connecting pipeline, so as to prevent the solution residue from interfering with the subsequent experiments, and the waste liquid after flushing is discharged to the outside by the second pump body 38 to ensure the cleanliness of the whole system;

[0035] Step 5: The track platform 32 and the clamping robot arm 33 cooperate to move the test tube and insert it into the test tube fixing seat 55. The horizontal moving platform 56 drives the second fixing frame 57 to move to the right, so that the solid adding device 58 moves to the top of the test tube. The second motor 59 drives the solid adding device 58 to rotate inside the second fixing frame 57 to a vertical downward state. The solid adding device 58 adds solid solute into the test tube. The weighing device 54 weighs the test tube inside the test tube fixing seat 55 to ensure the quantitative addition of the solute. By monitoring the weight change of the test tube in real time, the amount of solute added is accurately controlled to meet the experimental requirements.

[0036] Step 6: After the addition is completed, the vertical lifting platform 52 drives the mixing module 53 to move downward and insert into the test tube, and the mixing module 53 vibrates and mixes the solute and the solvent in the test tube to make the solute evenly dispersed in the solvent;

[0037] Step 7: After the mixing is completed, the track platform 32 and the clamping robot arm 33 cooperate to move the test tube and insert it into the outside of the stirring rod 64. The fourth motor 615 drives the mounting seat 68 to move upward outside the guide rod 67 through the screw assembly 610 under the transmission of the shaft mounting seat 614, the gear assembly 617 and the bevel gear assembly 616, and the cylinder 611 moves upward to the outside of the test tube. The cooling bath manufacturing equipment 35 fills its own cooling bath into the cylinder 611 and is located on the surface of the sealing plate 613;

[0038] Step 8: The third motor 65 drives the stirring rod 64 to rotate slowly inside the test tube under the transmission of the transmission belt 66 to slowly stir the solvent, so that the solvent inside the test tube is cooled. The sensor 39 observes and measures the temperature of the test tube inside the cylinder 611. When crystals begin to precipitate in the solvent, the sensor 39 records the temperature value at this moment to the solidification point of the solution;

[0039] Step 9: After the measurement is completed, the fourth motor 615 drives the mounting seat 68 to move downward through the screw assembly 610 under the transmission of the shaft mounting seat 614, the gear assembly 617 and the bevel gear assembly 616, so that the cylinder 611 moves downward outside the sealing plate 613, and then the sealing plate 613 pushes the cooling liquid inside the cylinder 611 into the water tank 61 for collection;

[0040] Step 10: The clamping robot 33 and the track platform 32 cooperate to move the test tube after measurement to the inside of the test tube cleaning and drying device 36. The test tube cleaning and drying device 36 rinses and dries the test tube. The clamping robot 33 and the track platform 32 clean and dry the inside of the cleaning and drying device 36 and clamp the test tube to the inside of the test tube rack 34 for storage and waiting for next use.

[0041] 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 measuring freezing point depression, characterized in that: include: Hood housing (1); A control system (2) is mounted on the right side of the exterior of the hood shell (1), and the control system (2) and the hood shell (1) are electrically connected; A measuring mechanism (3) is arranged below the hood housing (1); The measuring mechanism (3) comprises: A bottom shell (31) is arranged at the bottom of the hood shell (1) along the left-right direction, and the bottom shell (31) is electrically connected to the control system (2); A track platform (32) is installed on the front side of the top end of the bottom shell (31) along the left-right direction, and the track platform (32) is electrically connected to the control system (2); A clamping mechanical arm (33) is mounted on the top of the moving end of the track platform (32), and the clamping mechanical arm (33) is electrically connected to the control system (2); A test tube rack (34), arranged at the right rear side of the top end of the bottom housing (31); A liquid injection component (4) arranged at the top of the bottom shell (31) and located on the left side of the test tube rack (34); A solid adding component (5) is arranged at the top of the bottom shell (31) and is located on the left side of the liquid injecting component (4); A cooling bath manufacturing device (35) is arranged at the top of the bottom shell (31) and is located on the left side of the solid adding component (5), and the cooling bath manufacturing device (35) is electrically connected to the control system (2); A measuring component (6) is arranged at the top of the bottom shell (31) and is located on the left side of the cooling bath manufacturing device (35); A test tube cleaning and drying device (36) is arranged at the left rear side of the top end of the bottom shell (31), and the test tube cleaning and drying device (36) is electrically connected to the control system (2); A first pump body (37) is installed inside a groove at a left end of the middle portion of the front side of the bottom housing (31), and the first pump body (37) is electrically connected to the control system (2); A second pump body (38) is installed inside a groove at a right end of the middle portion of the front side of the bottom housing (31), and the second pump body (38) is electrically connected to the control system (2); A sensor (39) is mounted on the top of the bottom housing (31) and located on the front side of the measuring component (6); the sensor (39) is electrically connected to the control system (2).

2. The device for measuring freezing point depression according to claim 1, characterized in that: The liquid injection component (4) comprises: A first mounting frame (41) is arranged on the top of the bottom housing (31) in the up-down direction and is located on the left side of the test tube rack (34); A joint valve (42) is mounted on the top of the bottom shell (31) and is located below the inner side of the first mounting frame (41); the joint valve (42) and the second pump body (38) are connected via a pipeline; and the joint valve (42) and the control system (2) are electrically connected; A storage tank (43) is mounted on the rear side of the top end of the first mounting frame (41), and the storage tank (43) and the first pump body (37) are connected via a pipeline; A third pump body (44) is mounted on the front side of the top end of the first mounting frame (41), the third pump body (44) and the storage tank (43) are connected via a pipeline, and the third pump body (44) and the control system (2) are electrically connected; A slot frame (45) mounted on the front side of the top end of the first mounting frame (41) along the left-right direction; An electric telescopic rod (46), wherein the number of the electric telescopic rods (46) is two, and the two electric telescopic rods (46) are respectively mounted on the left and right sides of the middle of the top end of the slot frame (45), and the electric telescopic rod (46) is electrically connected to the control system (2); The lifting frame (47) is inserted into the bottom of the slot frame (45), and the telescopic ends of the two left and right electric telescopic rods (46) extend out of the lower surface of the slot frame (45) and are connected to the left and right sides of the top of the lifting frame (47).

3. The device for measuring freezing point depression according to claim 2, characterized in that: The liquid injection component (4) further comprises: A slot seat (48) is arranged in the middle of the bottom end of the lifting frame (47) along the up-down direction; A lifting seat (49) is inserted into the bottom of the slot seat (48) in the up-down direction; A joint (410) is installed on the front side of the lifting seat (49), and the joint (410) and the third pump body (44) are connected via a pipeline; A limiting groove (411) is formed on the inner top of the slot seat (48) along the up-down direction; A sliding block (412) inserted into the inner cavity of the limiting groove (411); A first connecting rod (413), one end of which is rotatably connected to the inner side of the sliding block (412) via a rotating shaft; A first motor (414) is mounted on the rear bottom end of the slot seat (48), the rotating end of the first motor (414) extends to the front side of the slot seat (48), and the first motor (414) is electrically connected to the control system (2); A rotating rod (415), one end of which is fixedly connected to the front side of the rotating end of the first motor (414), and the other end of the rotating rod (415) is rotatably connected to the bottom end of the first connecting rod (413) via a rotating shaft; One end of the second connecting rod (416) is rotatably connected to the inner side of the lifting seat (49) via a rotating shaft, and the other end of the second connecting rod (416) is rotatably connected to the other end of the first connecting rod (413) via a rotating shaft.

4. The device for measuring freezing point depression according to claim 3, characterized in that: The solid adding component (5) comprises: A first fixing frame (51) is arranged on the top of the bottom shell (31) in the up-down direction and is located on the left side of the first mounting frame (41); A vertical lifting platform (52) is installed on the front side of the top end of the first fixing frame (51) in the up-down direction, and the vertical lifting platform (52) is electrically connected to the control system (2); A mixing module (53) is installed on the front side of the moving end of the vertical lifting platform (52), and the mixing module (53) is electrically connected to the control system (2); A weighing device (54) is mounted on the top of the bottom housing (31) and is located below the front side of the first fixing frame (51), and the weighing device (54) is electrically connected to the control system (2); A test tube fixing seat (55) is arranged on the top of the weighing device (54); A horizontal movable platform (56) is installed on the top of the bottom housing (31) in the left-right direction and is located on the left side of the weighing device (54); the horizontal movable platform (56) is electrically connected to the control system (2); A second fixed frame (57) is installed on the top of the moving end of the horizontal moving platform (56) in the up-down direction; A solid adding device (58) is rotatably connected to the inner top of the second fixing frame (57) via a rotating shaft, and the solid adding device (58) is electrically connected to the control system (2); The second motor (59) is mounted on the front top of the second fixed frame (57). The rotating end of the second motor (59) extends into the inner side of the second fixed frame (57) and is connected to the axis of the solid adding device (58). The second motor (59) is electrically connected to the control system (2).

5. The device for measuring freezing point depression according to claim 4, characterized in that: The measuring component (6) comprises: A water tank (61) is embedded in the top of the bottom shell (31) and is located below the left side of the cooling bath manufacturing device (35), and the rear side of the water tank (61) extends outside the bottom shell (31); A second mounting frame (62) mounted on the rear side of the inner cavity of the water tank (61) in the up-down direction; A housing (63) mounted on the top of the second mounting frame (62) in the up-down direction; A stirring rod (64) is rotatably connected to the front side of the bottom end of the housing (63) via a bearing in an up-down direction, and the axis of the stirring rod (64) extends into the inner cavity of the housing (63); a third motor (65) disposed at the rear side of the bottom end of the housing (63), the rotating end of the third motor (65) extending into the inner cavity of the housing (63), and the third motor (65) being electrically connected to the control system (2); A transmission belt (66), one side of which is fixedly mounted on the rotating end of the third motor (65), and the other side of which is connected to the top end of the stirring rod (64); A guide rail rod (67) mounted on the inner front end of the second mounting frame (62) in the up-down direction; A mounting seat (68) sleeved on the outside of the guide rail rod (67); Roller seats (69), the number of the roller seats (69) being two, the two roller seats (69) being respectively mounted on the left and right ends of the rear side of the mounting seat (68), the roller seats (69) being in contact with the second mounting frame (62); A lead screw assembly (610) is disposed at the inner rear end of the second mounting frame (62) in the up-down direction, and a lead screw nut in the lead screw assembly (610) is rotatably connected to the inner rear side of the mounting seat (68) via a bearing; A cylinder (611) fixedly mounted on the inner front end of the mounting seat (68); A bracket (612) is arranged at the front side of the inner cavity of the water tank (61) in the up-down direction, and the top end of the bracket (612) extends into the bottom of the inner cavity of the cylinder (611); A sealing plate (613) is arranged on the top end of the bracket (612); A rotating shaft mounting seat (614) mounted on the top of the second mounting frame (62); A fourth motor (615) is mounted on the left side of the top end of the second mounting frame (62); the rotating end of the fourth motor (615) is connected to the axis of the rotating shaft mounting seat (614); and the fourth motor (615) is electrically connected to the control system (2); A bevel gear assembly (616), one end of which has a bevel gear fixedly connected to the top of the axis of the lead screw in the lead screw assembly (610); A gear assembly (617) has a gear at one end mounted on the outside of the axis of the rotating shaft mounting seat (614), and a gear at the other end of the gear assembly (617) is connected to a bevel gear at the other end of the bevel gear assembly (616) via a rotating shaft seat.

6. The device for measuring freezing point depression according to claim 5, characterized in that: The outer diameter of the sealing plate (613) is matched to the inner diameter of the cylinder (611).

7. A method for measuring freezing point depression, applied to a device for measuring freezing point depression as claimed in claim 6, characterized in that: The steps include: Step 1: The staff performs the initial preparation work of the equipment and accurately docks the first pump body (37) with the container containing the solution. After the docking is completed, the first pump body (37) pumps the external solution into the storage tank (43). The staff opens the sealed door of the hood shell (1) and puts the solute into the solid addition device (58): Step 2: The clamping mechanical arm (33) clamps and grabs the test tube inside the test tube rack (34), and the track platform (32) drives the clamping mechanical arm (33) to move from right to left on the top of the bottom shell (31); Step 3: The clamping robot arm (33) moves the test tube to the inner side of the first mounting frame (41), and the first motor (414) drives the rotating rod (415) to rotate, so that the rotating rod (415) drives the first connecting rod (413) to rotate downward inside the slider (412), and the slider (412) moves downward in the inner cavity of the limiting groove (411), so that the first connecting rod (413) drives one end of the second connecting rod (416) to move downward, and with the cooperation of the second connecting rod (416), drives the lifting seat (49) to move downward in the inner cavity of the slot seat (48), so that the lifting seat (49) drives the joint (410) to move downward and insert into the test tube, and the third pump body (44) pumps the storage solution in the storage tank (43) into the test tube through the joint (410) in a quantitative manner; Step 4: After the solution is injected, the first motor (414) drives the rotating rod (415) to continue to rotate, and drives the lifting seat (49) to drive the joint (410) to move upward under the cooperation of the first connecting rod (413) and the second connecting rod (416), so that the joint (410) is disconnected from the test tube, and the clamping mechanical arm (33) moves the test tube to the outside of the first mounting frame (41), and the electric telescopic rod (46) drives the lifting frame (47) to move downward inside the slot frame (45), so that the lifting frame (47) is in the matching position between the slot seat (48) and the lifting seat (49). The connector (410) is moved downward and docked with the connector valve (42). The staff pumps the cleaning agent from the first pump body (37) into the storage tank (43), and pumps the cleaning agent inside the storage tank (43) from the connector (410) into the connector valve (42) through the third pump body (44), so as to flush the storage tank (43), the third pump body (44), the connector (410) and the connecting pipeline, thereby preventing the solution residue from interfering with subsequent experiments. The waste liquid after flushing is discharged to the outside by the second pump body (38), thereby ensuring the cleanliness of the entire system; Step 5: The track platform (32) and the clamping mechanical arm (33) cooperate to move the test tube and insert it into the test tube fixing seat (55), the horizontal moving platform (56) drives the second fixing frame (57) to move to the right, so that the solid adding device (58) moves to the top of the test tube, the second motor (59) drives the solid adding device (58) to rotate inside the second fixing frame (57) to a vertical downward state, the solid adding device (58) adds solid solute into the test tube, the weighing device (54) weighs the test tube inside the test tube fixing seat (55) to ensure the quantitative addition of the solute, and the weight change of the test tube is monitored in real time to accurately control the amount of solute added to meet the experimental requirements; Step 6: After the addition is completed, the vertical lifting platform (52) drives the mixing module (53) to move downward and insert into the test tube, and the mixing module (53) vibrates and mixes the solute and the solvent in the test tube so that the solute is evenly dispersed in the solvent; Step 7: After the mixing is completed, the track platform (32) and the clamping robot arm (33) cooperate to move the test tube and insert it outside the stirring rod (64), and the fourth motor (615) drives the mounting seat (68) to move upward outside the guide rod (67) through the screw assembly (610) under the transmission of the shaft mounting seat (614), the gear assembly (617) and the bevel gear assembly (616), and the cylinder (611) moves upward to the outside of the test tube, and the cooling bath manufacturing equipment (35) fills its own cooling bath into the cylinder (611) and is located on the surface of the sealing plate (613); Step 8: The third motor (65) drives the stirring rod (64) to rotate slowly inside the test tube under the drive belt (66) to slowly stir the solvent, so that the solvent inside the test tube is cooled. The sensor (39) observes and measures the temperature of the test tube inside the cylinder (611). When crystals begin to precipitate in the solvent, the sensor (39) records the temperature value at this moment to the solidification point of the solution. Step nine: After the measurement is completed, the fourth motor (615) drives the mounting seat (68) to move downward through the screw assembly (610) under the transmission of the shaft mounting seat (614), the gear assembly (617) and the bevel gear assembly (616), so that the cylinder (611) moves downward outside the sealing plate (613), and then the sealing plate (613) pushes the cooling liquid inside the cylinder (611) into the water tank (61) for collection; Step 10: The clamping robot arm (33) and the track platform (32) cooperate to move the test tube after the measurement to the inside of the test tube cleaning and drying device (36). The test tube cleaning and drying device (36) rinses and dries the test tube. The clamping robot arm (33) and the track platform (32) clean and dry the inside of the test tube cleaning and drying device (36) and clamp and move the test tube to the inside of the test tube rack (34) for storage and waiting for next use.

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