Intelligent titration device of cuvette

Abstract

The invention relates to an intelligent titration device of a cuvette, and belongs to the technical field of sampling monitoring, the intelligent titration device comprises a shell, the cuvette is placed in the shell, the top of the shell is provided with a liquid storage assembly used for feeding and recycling, a fixing frame is arranged above the top of the shell, and the fixing frame is connected with the cuvette. Lifting assemblies used for controlling liquid inlet and outlet are arranged at the bottoms of the two ends of the fixing frame, and a valve assembly used for controlling backflow is arranged at the bottom of the middle of the fixing frame. According to the intelligent titration device of the cuvette, the partition plate and the shell are arranged to form a cavity with a constant capacity, the filling block and the communicating seat adjust the sizes of cavity spaces on the upper side and the lower side of the filling block in the shell to change, and a titration solution is pushed to circulate in the shell; the one-way valve is matched with movement of the filling block to ensure that the titrating solution can only flow in one direction, the communicating seat is matched with the sealing plug to regulate and control the flowing direction of the titrating solution and control the titrating solution to flow in the set direction, and therefore accurate measurement of the usage amount of the titrating solution is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling monitoring, and specifically to an intelligent titration device for a colorimetric cell. Background Art

[0002] In the field of laboratory analysis, the determination of the end point of titration operation has always been a key link affecting the accuracy. In traditional water quality detection, the titration operation based on a colorimetric cell often faces large errors in manual liquid addition. Traditional manual titration relies on the naked eye to capture color changes and is easily interfered by environmental light, differences in personnel experience, etc.

[0003] Chinese Patent CN102495058A discloses a constant temperature fiber optic colorimetric titration device and its detection method, including a magnetic stirring device, a light emitting diode, an incident optical fiber, thermal conductive silicone grease, a colorimetric cell, a glass cap, an exhaust hole, an aluminum block, an outgoing optical fiber, a selenium photocell, a lens, a heating sheet, an inlet and outlet for liquid, a temperature sensor; the magnetic stirring device is installed at the lower part of the colorimetric cell, and the glass cap with an exhaust hole covers the colorimetric cell; the bottom end of the colorimetric cell is provided with an inlet and outlet for liquid and is equipped with a heating sheet; a light emitting diode and a light absorbing cell are respectively installed on both sides of the colorimetric cell, an incident optical fiber is connected between the colorimetric cell and the light emitting diode, and a lens and an outgoing optical fiber are sequentially connected between the light absorbing cell and the colorimetric cell; the outer wall of the colorimetric cell is wrapped with an aluminum block, and thermal conductive silicone grease is filled between the two. The outer side of the aluminum block is provided with a groove for placing the heating sheet, and a round hole for placing the temperature sensor is designed inside; this invention provides a constant temperature fiber optic colorimetric titration device with a fast heating speed, uniform heating, and suitable for on-line monitoring.

[0004] By comparing with the above invention, a peristaltic pump controls a metering tube to drip a detection liquid into the colorimetric cell for monitoring. During the dripping process, the roller of the peristaltic pump flattens the hose and pushes the liquid forward to control the amount of the dripping liquid. Although this method is relatively simple, its application scenario is relatively single, and the accuracy is easily affected by the service life and capacity of the hose. Its application scenario has great limitations and low flexibility. Therefore, an intelligent titration device for a colorimetric cell is needed to solve the problems mentioned above. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an intelligent titration device for a colorimetric cell, which has the advantages of good flexibility, high accuracy, etc., and solves the problems that during the manual liquid dripping process of the colorimetric cell titration device, the dripping rate cannot be accurately regulated in real time and the measurement of the dripping dose is relatively inconvenient.

[0006] To achieve the above object, the present invention provides the following technical solution: An intelligent titration device for a colorimetric cell, comprising a housing and a colorimetric cell placed on the inner bottom wall of the housing. A liquid storage assembly for feeding and recycling is provided at the top of the housing. Above the top of the housing is a fixed frame. At the bottom of both ends of the fixed frame, there is a lifting assembly extending into the inner cavity of the housing and used for controlling the inflow and outflow of liquid. At the bottom of the middle of the fixed frame, there is a valve assembly extending into the inner cavity of the housing and used for controlling the reflux.

[0007] A partition is fixed to the inner side wall of the housing. Inside the partition, there is a switch assembly for controlling the titration rate. The inner bottom wall of the housing is rotatably connected to a rotating table, and the colorimetric cell is placed inside the rotating table. An auxiliary mixing and stirring assembly extending into the colorimetric cell is provided on the inner side wall of the housing.

[0008] Furthermore, the liquid storage assembly includes two feeding and discharging ports opened on the top wall of the housing. Inside the top ends of the two feeding and discharging ports, a liquid injection bottle and a measuring bottle are respectively threadedly connected. Inside the bottom bottle mouths of the liquid injection bottle and the measuring bottle, one-way valves are fixed, and the opening directions of the two one-way valves are opposite.

[0009] Furthermore, the lifting assembly includes two electric telescopic rods fixed to the bottom of both ends of the fixed frame. Both electric telescopic rods vertically penetrate the top wall of the housing to its interior and are slidably connected to the top wall of the housing. At the bottom of the electric telescopic rod, a filling block located inside the housing is fixed.

[0010] Furthermore, the valve assembly includes a servo motor fixed to the bottom of the fixed frame. A connecting seat is fixed to the inner top wall of the housing. Inside the connecting seat, a sealing plug is rotatably connected. Through holes for cooperating with the servo motor are opened on the top walls of the housing and the connecting seat. The output shaft of the servo motor passes through the through hole and is fixedly installed with the top of the sealing plug. A liquid infusion pipe extending into the inner cavity of the connecting seat is fixedly connected to the bottom of the sealing plug.

[0011] Furthermore, a plurality of liquid inlet holes are opened on the side surface of the connecting seat. A plurality of liquid inlet groove holes for cooperating with the liquid inlet holes are opened on the side surface of the sealing plug. A collecting cavity communicating with the other end of the liquid inlet groove hole is opened at the center of the inside of the sealing plug. A through hole communicating with the liquid infusion pipe is opened at the bottom of the sealing plug. The through hole is communicated with the collecting cavity. The liquid infusion pipe vertically penetrates the filling block and is slidably connected to the filling block. The bottom of the liquid infusion pipe and the top of the partition are fixedly installed, and a plurality of material transfer holes are opened at the bottom of the liquid infusion pipe.

[0012] Furthermore, a storage cavity is opened inside the partition. A liquid dripping inlet hole and a liquid dripping outlet hole both communicating with the storage cavity are respectively opened on the upper and lower walls of the partition.

[0013] Further, the switch assembly includes four fixing cylinders fixed inside the storage cavity. Through holes for cooperating with the drip inlet hole and the drip outlet hole are respectively formed in the upper and lower walls of the fixing cylinder. A switching block is arranged inside the fixing cylinder in a slidable connection manner. A limiting rod is fixed on the inner side wall of the fixing cylinder close to the housing. One end of the limiting rod close to the switching block is embedded inside the switching block and is in slidable connection with the switching block. A support spring is fixedly installed on the side of the switching block close to the limiting rod, and the other end of the support spring is fixedly installed on the inner side wall of the fixing cylinder.

[0014] Further, the switching block has a T-shaped structure, and one end of the switching block away from the limiting rod penetrates through the side wall of the fixing cylinder to the inside of the storage cavity. One side of the end of the switching block located inside the storage cavity is arranged as an inclined surface. Two liquid leakage holes for cooperating with the drip inlet hole are formed in the upper surface of the switching block located inside the fixing cylinder. A sealing block is slidably connected inside the liquid leakage hole on the side close to the support spring. An electric push rod is fixed at the bottom of the sealing block, and the top of the side of the electric push rod is fixedly installed with the bottom of the switching block.

[0015] Further, an opening and closing motor is fixedly installed at the bottom of the partition board. The output shaft of the opening and closing motor penetrates to the inside of the storage cavity and is fixed with a rotating plate. An opening and closing wedge block for cooperating with the switching block is fixed on the side of the rotating plate.

[0016] Further, the stirring assembly includes a plurality of fixing rods uniformly fixed on the inner side wall of the housing and located below the partition board. A heating rod is inserted and fixed at opposite ends of the fixing rods. The bottom of the heating rod is inserted into the solution inside the colorimetric cuvette, and the bottom of the colorimetric cuvette is snap-fixed on the top of the rotating table.

[0017] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0018] 1. For the intelligent titration device of the colorimetric cuvette, by arranging the partition board and the housing to form a chamber with a constant volume, the filling block and the connecting seat adjust the sizes of the cavity spaces above and below the filling block inside the housing to change, and push the titrant to flow inside the housing. The one-way valve cooperates with the movement of the filling block to ensure that the titrant can only flow in one direction, and the connecting seat cooperates with the sealing plug to control the flow direction of the titrant, and controls the flow of the titrant in a specified direction, so as to realize the accurate measurement of the usage amount of the titrant.

[0019] 2. For the intelligent titration device of the colorimetric cuvette, by arranging the fixing cylinder and the switching block to cooperate, the amount and rate of the titrant that the partition board can pass through can be regulated. The uniformly arranged drip inlet holes on the partition board cooperate with the drip outlet holes to periodically titrate the titrant on the top of the partition board to different positions of the colorimetric cuvette. At the same time, with the heating and stirring effect of the heating rod, the reaction efficiency of the titrant is improved, and the color change occurs rapidly after reaching the reaction dosage, reducing the error of titration liquid addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the present invention;

[0021] Figure 2 is a transverse sectional view of the present invention;

[0022] Figure 3 is a longitudinal sectional view of the present invention;

[0023] Figure 4 is the present invention Figure 2 magnified view of structure A therein;

[0024] Figure 5 is a perspective view of the connecting seat, liquid inlet hole, liquid infusion tube and material transfer hole of the present invention;

[0025] Figure 6 is the present invention Figure 2 magnified view of structure B therein;

[0026] Figure 7 is a perspective view of the fixed cylinder, opening and closing block and electric push rod of the present invention;

[0027] Figure 8 is a perspective view of the opening and closing motor, rotating plate and opening and closing wedge block of the present invention.

[0028] In the figure: 1. housing; 11. colorimetric cuvette; 2. liquid storage assembly; 21. liquid injection bottle; 22. measurement bottle; 23. one-way valve; 3. fixing frame; 4. lifting assembly; 41. electric telescopic rod; 42. filling block; 5. valve assembly; 51. servo motor; 52. connecting seat; 521. liquid inlet hole; 53. sealing plug; 531. liquid inlet groove hole; 54. liquid infusion tube; 541. material transfer hole; 6. partition board; 61. storage cavity; 62. liquid dripping inlet hole; 63. liquid dripping outlet hole; 7. switch assembly; 71. fixed cylinder; 72. opening and closing block; 73. limiting rod; 74. supporting spring; 75. liquid leakage hole; 76. sealing block; 77. electric push rod; 78. opening and closing motor; 79. rotating plate; 710. opening and closing wedge block; 8. rotating table; 9. stirring assembly; 91. fixing rod; 92. heating rod. DETAILED DESCRIPTION OF THE INVENTION

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 to 8, An intelligent titration device for a colorimetric cell in this embodiment includes a housing 1 and a colorimetric cell 11 placed on the inner bottom wall of the housing 1. A liquid storage assembly 2 for feeding and recycling is provided at the top of the housing 1. The liquid storage assembly 2 is used to supply the dripping liquid and measure the remaining dripping liquid after color change. Above the top of the housing 1, there is a fixing frame 3. At the bottom of both ends of the fixing frame 3, there is a lifting assembly 4 extending into the inner cavity of the housing 1 and used to control the inflow and outflow of liquid. The lifting assembly 4 controls the dosage of the dripping liquid entering the interior of the housing 1. At the bottom of the middle of the fixing frame 3, there is a valve assembly 5 extending into the inner cavity of the housing 1 and used to control the reflux. The valve assembly 5 cooperates with the lifting assembly 4 to control and lock the position of the dripping liquid inside the housing 1.

[0031] A partition 6 is fixed to the inner side wall of the housing 1. Inside the partition 6, there is a switch assembly 7 for controlling the titration rate. The housing 1 is divided into upper and lower cavity parts by the partition 6. At the same time, in cooperation with the switch assembly 7, the dripping rate of the dripping liquid is adjusted. The inner bottom wall of the housing 1 is rotatably connected to a rotating table 8, and the colorimetric cell 11 is placed inside the rotating table 8. An auxiliary mixing and stirring assembly 9 extending into the colorimetric cell 11 is provided on the inner side wall of the housing 1.

[0032] It should be noted that the thickness of the partition 6 is small, so that the time for the dripping liquid to pass through the partition 6 is short. The cavity formed by the combination of the partition 6 and the housing 1 forms a metering bottle structure.

[0033] Please refer to again Figure 2 , In order to store the dripping liquid and measure the remaining dripping liquid after color change, the liquid storage assembly 2 includes two feeding and discharging ports opened on the top wall of the housing 1. Inside the top ends of the two feeding and discharging ports, a liquid injection bottle 21 and a measuring bottle 22 are respectively threadedly connected. The measuring bottle 22 is a metering bottle. When the liquid is injected from the bottom of the measuring bottle 22, the current metering data can be read in real time according to the scale. One-way valves 23 are fixed inside the bottom bottle mouths of the liquid injection bottle 21 and the measuring bottle 22, and the opening directions of the two one-way valves 23 are opposite.

[0034] It should be noted that the opening direction of the one-way valve 23 at the bottom of the liquid injection bottle 21 leads to the inside of the housing 1, and the opening direction of the one-way valve 23 of the measuring bottle 22 leads to the outside of the housing 1. The one-way valve 23 only allows the liquid to pass unidirectionally, and the gas can pass bidirectionally. A feeding port is provided on the side of the liquid injection bottle 21. The surface of the feeding port is wrapped with a breathable film made of a polymer material through a threaded ring. The gas can pass through this breathable film normally, but the liquid cannot pass through. When adding materials, the threaded ring and the breathable film need to be removed, and the titrant is added into the feeding port. An air inlet and outlet is provided at the top of the measuring bottle 22, and a sealing cover is threadedly connected to the outside of the air inlet and outlet. When measuring, the sealing cover needs to be opened to ensure the smooth flow of the gas inside the measuring bottle 22.

[0035] Please refer to again Figure 3, in order to control the dosage of the liquid entering the interior of the housing 1, the lifting assembly 4 in this embodiment includes two electric telescopic rods 41 fixed to the bottoms of both ends of the fixing frame 3. Both electric telescopic rods 41 vertically penetrate through the top wall of the housing 1 to its interior and are slidably connected to the top wall of the housing 1. A filling block 42 located inside the housing 1 is fixed to the bottom of the electric telescopic rod 41. The dropping liquid inside the liquid injection bottle 21 can smoothly enter the interior of the housing 1 through the lowering of the filling block 42. The rising of the filling block 42 pushes the dropping liquid entering the interior of the housing 1 to enter the next layer along the valve assembly 5, thereby realizing the control of the lifting of the filling block 42 to squeeze the dropping liquid inside the housing 1 and push the dropping liquid to flow inside the housing 1.

[0036] It should be noted that the side of the telescopic rod of the electric telescopic rod 41 is provided with a capacity scale. The height change of the electric telescopic rod 41 can know the current dosage of the dropping liquid entering the interior of the housing 1. The sliding of the electric telescopic rod 41 on the top wall of the housing 1 has a sealing effect to prevent the liquid and gas from escaping along the gap between the electric telescopic rod 41 and the housing 1.

[0037] The valve assembly 5 in this embodiment includes a servo motor 51 fixed to the bottom of the fixing frame 3. A communication seat 52 is fixed to the inner top wall of the housing 1. A sealing plug 53 is rotatably connected inside the communication seat 52. Through holes for the use of the servo motor 51 are opened on the top walls of both the housing 1 and the communication seat 52. The output shaft of the servo motor 51 passes through the through hole and is fixedly installed with the top of the sealing plug 53, so that the servo motor 51 can control the rotation of the sealing plug 53 inside the communication seat 52. A liquid infusion tube 54 extending to the inner cavity of the communication seat 52 is fixedly connected to the bottom of the sealing plug 53.

[0038] A number of liquid inlet holes 521 are opened on the side of the communication seat 52, and a number of liquid inlet groove holes 531 for cooperating with the liquid inlet holes 521 are opened on the side of the sealing plug 53. The liquid inlet holes 521 and the liquid inlet groove holes 531 are used in cooperation to form a conditional communication structure among the communication seat 52, the sealing plug 53 and the liquid infusion tube 54. A collecting cavity communicating with the other end of the liquid inlet groove hole 531 is opened at the center of the sealing plug 53. A through hole communicating with the liquid infusion tube 54 is opened at the bottom of the sealing plug 53, and the through hole is communicated with the collecting cavity. The collecting cavity guides all the dropping liquid stored inside the liquid inlet groove hole 531 into the interior of the liquid infusion tube 54. The liquid infusion tube 54 vertically penetrates through the filling block 42 and is slidably connected to the filling block 42. A seal is slidably arranged between the liquid infusion tube 54 and the filling block 42. The bottom of the liquid infusion tube 54 is fixedly installed with the top of the partition plate 6, and a number of material transfer holes 541 are opened at the bottom of the liquid infusion tube 54.

[0039] It should be noted that the pipe diameter size of the liquid infusion tube 54 and the opening size of the material transfer holes 541 are designed so that the surface tension between the dropping liquids can keep the dropping liquids gather into stable water droplets inside the liquid infusion tube 54.

[0040] A storage cavity 61 is formed inside the partition plate 6, and a liquid dripping inlet hole 62 and a liquid dripping outlet hole 63, both communicating with the storage cavity 61, are respectively formed in the upper and lower walls of the partition plate 6.

[0041] It should be noted that the size of the liquid dripping outlet hole 63 is larger than that of the liquid dripping inlet hole 62.

[0042] In this embodiment, the switch assembly 7 includes four fixing cylinders 71 fixed inside the storage cavity 61. Through holes for cooperating with the liquid dripping inlet hole 62 and the liquid dripping outlet hole 63 are respectively formed in the upper and lower walls of the fixing cylinder 71. A sliding opening and closing block 72 is arranged inside the fixing cylinder 71. A limiting rod 73 is fixed on the inner side wall of the fixing cylinder 71 close to the housing 1. One end of the limiting rod 73 close to the opening and closing block 72 is embedded inside the opening and closing block 72 and is slidably connected with the opening and closing block 72. The limiting rod 73 and the inner side wall of the fixing cylinder 71 cooperate to define the moving path of the opening and closing block 72, improving the stability of the opening and closing block 72 during the sliding process. A support spring 74 is fixedly installed on the side of one end of the opening and closing block 72 close to the limiting rod 73, and the other end of the support spring 74 is fixedly installed on the inner side wall of the fixing cylinder 71.

[0043] The opening and closing block 72 has a T-shaped structure, and one end of the opening and closing block 72 away from the limiting rod 73 penetrates through the side wall of the fixing cylinder 71 into the interior of the storage cavity 61. One end of the opening and closing block 72 penetrates through the side wall of the fixing cylinder 71, and at the same time, the side surface of the fixing cylinder 71 limits the side surface of the opening and closing block 72. The side surface of the end of the opening and closing block 72 located inside the storage cavity 61 is set as an inclined surface. Two liquid leakage holes 75 for cooperating with the liquid dripping inlet hole 62 are formed on the upper surface of the opening and closing block 72 located inside the fixing cylinder 71. A sealing block 76 is slidably connected inside the liquid leakage hole 75 on the side close to the support spring 74. The sizes of the liquid leakage hole 75 and the liquid dripping inlet hole 62 are the same, so that the sealing block 76 can block the liquid leakage hole 75 and the liquid dripping inlet hole 62 synchronously. An electric push rod 77 is fixed at the bottom of the sealing block 76. The top of the side surface of the electric push rod 77 is fixedly installed with the bottom of the opening and closing block 72. By arranging the sealing block 76 and the electric push rod 77 to block the liquid leakage hole 75 on one side of the opening and closing block 72, a closed effect is achieved. At the same time, the electric push rod 77 can be controlled to push the sealing block 76 into the interior of the liquid dripping inlet hole 62, so as to push out all the liquid drops remaining in the liquid dripping inlet hole 62, avoiding data errors.

[0044] It should be noted that before the sealing block 76 is titrated and discolored, it is always located inside the liquid leakage hole 75. While filling the liquid leakage hole 75, it will not affect the lateral movement of the opening and closing block 72. Only after the titration and discoloration are completed, the sealing block 76 will be embedded inside the liquid dripping inlet hole 62. Both liquid leakage holes 75 are located above the liquid dripping outlet hole 63. When there is liquid dripping inside the liquid leakage hole 75, the opening and closing block 72 is impacted by the restoring force of the support spring 74 and vibrates when hitting the side wall of the fixed cylinder 71, and the liquid dripping can smoothly drip along the liquid dripping outlet hole 63 when being vibrated.

[0045] An opening and closing motor 78 is fixedly installed at the bottom of the partition plate 6. The output shaft of the opening and closing motor 78 penetrates into the storage cavity 61 and is fixed with a rotating plate 79. An opening and closing wedge block 710 used in cooperation with the opening and closing block 72 is fixed on the side surface of the rotating plate 79.

[0046] It should be noted that an inclined surface used in cooperation with the opening and closing block 72 is provided on the side surface of the opening and closing wedge block 710. In this way, when the rotating plate 79 rotates under the operation of the opening and closing motor 78, the opening and closing wedge block 710 is pushed to periodically squeeze the opening and closing block 72, thereby realizing the periodic opening and closing of the channel. The number of opening and closing wedge blocks 710 is one, while the number of opening and closing blocks 72 is four. In this way, when the opening and closing wedge block 710 rotates to different positions, different opening and closing blocks 72 are driven to open and close, so that the liquid dripping drops into the colorimetric dish 11 from different positions of the partition plate 6.

[0047] The stirring assembly 9 in this embodiment includes a plurality of fixing rods 91 uniformly fixed on the inner side wall of the housing 1 and located below the partition plate 6. A heating rod 92 is inserted and fixed at the opposite ends of the fixing rods 91. The bottom of the heating rod 92 is inserted into the solution inside the colorimetric dish 11, and the bottom of the colorimetric dish 11 is snap-fixed on the top of the rotating table 8.

[0048] It should be noted that the height position of the end of the heating rod 92 inserted and fixed to the fixing rod 91 can be adjusted by sliding. When the colorimetric dish 11 is taken out, the heating rod 92 needs to be adjusted to the highest position, and then the colorimetric dish 11 is dug out from the top of the rotating table 8.

[0049] It can be understood that when the rotating table 8 rotates under the action of external force assistance or motor drive, it will drive the colorimetric dish 11 to rotate synchronously. Since the position of the heating rod 92 is fixed, the colorimetric dish 11 will drive the solution to rotate in the opposite direction relative to the heating rod 92 during the rotation process, so that while the heating rod 92 heats the colorimetric dish 11, it mixes and stirs the solution inside the colorimetric dish 11, enabling the liquid dripping to be mixed with the solution in the shortest time.

[0050] All the electrical components mentioned in the text are electrically connected to the controller and the power supply. The control method of the present invention is controlled by the controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of the power supply provided by the storage battery also belongs to the common knowledge in the art. And the present invention is mainly used to protect mechanical devices. Therefore, the control method and circuit connection of the present invention will not be explained in detail.

[0051] The working principle of the above embodiment is as follows:

[0052] (1) By starting the electric telescopic rod 41 to extend, the filling block 42 is pushed to move downward. The downward movement of the filling block 42 causes a cavity to be formed inside the housing 1 above the filling block 42. The dripping liquid inside the liquid injection bottle 21 enters the inside of the housing 1 through the one-way valve 23 to fill the cavity. By recording the longest position of the electric telescopic rod 41, the dosage of the dripping liquid that enters the inside of the housing 1 currently is recorded. Then, the servo motor 51 is controlled to rotate. The rotation of the servo motor 51 drives the sealing plug 53 to rotate, so that the liquid inlet groove hole 531 and the liquid inlet hole 521 are aligned. At the same time, the electric telescopic rod 41 is started to contract to drive the filling block 42 to rise, so as to push all the dripping liquid accumulated on the top of the filling block 42 into the inside of the communication seat 52. The dripping liquid passes through the liquid inlet hole 521 and the liquid inlet groove hole 531 and flows to the top of the partition plate 6 through the infusion tube 54. The opening and closing motor 78 is controlled to drive the rotating plate 79 and the opening and closing wedge block 710 to rotate. During the rotation of the opening and closing wedge block 710, it will push the opening and closing block 72 to move horizontally, so that the liquid leakage hole 75 of the opening and closing block 72 is briefly aligned with the dripping liquid inlet hole 62. The dripping liquid passes through the liquid leakage hole 75 and drips into the lower colorimetric dish 11.

[0053] (2) The opening and closing motor 78 continuously drives the liquid leakage holes 75 and the liquid dripping inlet holes 62 to be briefly aligned. After the liquid drips continuously through the multiple liquid leakage holes 75 and onto the colorimetric dish 11, it discolors. The opening and closing motor 78 immediately stops rotating, and the electric push rod 77 immediately pushes the sealing block 76 into the liquid dripping inlet hole 62 to squeeze out all the liquid inside the liquid dripping inlet hole 62. At this time, only the liquid drop exists at the top of the partition plate 6. Control the electric telescopic rod 41 to push the filling block 42 to fall. The one-way valve 23 closes. The falling of the filling block 42 squeezes the air and the liquid drop below the filling block 42 to move. Since the air is above the liquid drop and the material conveying hole 541 is at the bottom of the liquid conveying pipe 54, the downward movement of the filling block 42 pushes the air to squeeze the liquid drop to first enter the inside of the liquid conveying pipe 54. The liquid drop is all introduced above the filling block 42 along the liquid conveying pipe 54 and the connecting seat 52. Control the servo motor 51 to drive the sealing plug 53 to rotate so that the liquid inlet groove hole 531 and the liquid inlet hole 521 are staggered. Then control the electric telescopic rod 41 to contract to drive the filling block 42 to rise. The upward movement of the filling block 42 causes the liquid drop at the top to only enter the inside of the measuring bottle 22 along the one-way valve 23. After all the liquid drops enter the inside of the measuring bottle 22, read the current liquid volume data of the measuring bottle 22, and combine it with the previously recorded liquid drop dosage. The difference between the two gives the current titration consumption.

[0054] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0055] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An intelligent titration device for a cuvette, comprising a housing (1) and a cuvette (11) placed on the inner bottom wall of the housing (1), characterized in that: The top of the shell (1) is provided with a liquid storage component (2) for feeding and recycling, a fixing frame (3) is provided above the top of the shell (1), the bottoms of both ends of the fixing frame (3) are provided with lifting components (4) extending into the inner cavity of the shell (1) and used to control the inflow and outflow of liquid, and the bottom of the middle of the fixing frame (3) is provided with a valve component (5) extending into the inner cavity of the shell (1) and used to control the reflux; A partition (6) is fixed to the inner wall of the shell (1), a switch assembly (7) for controlling the titration rate is arranged inside the partition (6), the inner bottom wall of the shell (1) is rotatably connected to a rotating table (8), the cuvette (11) is placed inside the rotating table (8), and the inner wall of the shell (1) is provided with an auxiliary mixing and stirring assembly (9) extending into the cuvette (11).

2. The intelligent titration device for a cuvette according to claim 1, characterized in that: The liquid storage assembly (2) comprises two inlet and outlet ports opened on the top wall of the shell (1), and the top ends of the two inlet and outlet ports are respectively threadedly connected to a liquid injection bottle (21) and a measuring bottle (22), and the bottom bottle openings of the liquid injection bottle (21) and the measuring bottle (22) are both fixed with a one-way valve (23), and the opening directions of the two one-way valves (23) are opposite.

3. The intelligent titration device for a cuvette according to claim 1, characterized in that: The lifting assembly (4) comprises two electric telescopic rods (41) fixed at the bottom of both ends of the fixing frame (3); the two electric telescopic rods (41) vertically penetrate the top wall of the shell (1) to the inside thereof and are slidably connected to the top wall of the shell (1); and a filling block (42) located in the inner cavity of the shell (1) is fixed at the bottom of the electric telescopic rod (41).

4. The intelligent titration device for a cuvette according to claim 3, characterized in that: The valve assembly (5) comprises a servo motor (51) fixed to the bottom of a fixing frame (3); a connecting seat (52) is fixed to the inner top wall of the shell (1); a sealing plug (53) is rotatably connected to the inside of the connecting seat (52); the top walls of the shell (1) and the connecting seat (52) are both provided with through holes for use with the servo motor (51); the output shaft of the servo motor (51) passes through the through hole and is fixedly mounted to the top of the sealing plug (53); the bottom of the sealing plug (53) is fixedly connected to an infusion tube (54) extending to the inner cavity of the connecting seat (52).

5. The intelligent titration device for a cuvette according to claim 4, characterized in that: The side of the connecting seat (52) is provided with a plurality of liquid inlet holes (521), the side of the sealing plug (53) is provided with a plurality of liquid inlet slot holes (531) used in conjunction with the liquid inlet holes (521), a collecting chamber connected to the other end of the liquid inlet slot hole (531) is provided at the center of the interior of the sealing plug (53), a through hole connected to the liquid infusion tube (54) is provided at the bottom of the sealing plug (53), the through hole is connected to the collecting chamber, the liquid infusion tube (54) vertically penetrates the filling block (42) and is slidably connected to the filling block (42), the bottom of the liquid infusion tube (54) is fixedly mounted to the top of the partition (6), and the bottom of the liquid infusion tube (54) is provided with a plurality of material transfer holes (541).

6. The intelligent titration device for a cuvette according to claim 1, characterized in that: A receiving cavity (61) is provided inside the partition (6), and a dripping inlet hole (62) and a dripping outlet hole (63) which are both in communication with the receiving cavity (61) are respectively provided on the upper and lower walls of the partition (6).

7. The intelligent titration device for a cuvette according to claim 6, characterized in that: The switch assembly (7) comprises four fixed cylinders (71) fixed inside the storage cavity (61); the upper and lower walls of the fixed cylinder (71) are respectively provided with holes used for matching the dripping inlet hole (62) and the dripping outlet hole (63); the interior of the fixed cylinder (71) is provided with a slidably connected opening and closing block (72); a limiting rod (73) is fixed to the inner side wall of the fixed cylinder (71) close to the shell (1); one end of the limiting rod (73) close to the opening and closing block (72) is embedded in the interior of the opening and closing block (72) and is slidably connected to the opening and closing block (72); a support spring (74) is fixedly installed on the side of one end of the opening and closing block (72) close to the limiting rod (73); the other end of the support spring (74) is fixedly installed to the inner side wall of the fixed cylinder (71).

8. The intelligent titration device for a cuvette according to claim 7, characterized in that: The opening and closing block (72) is a T-shaped structure, and one end of the opening and closing block (72) away from the limiting rod (73) passes through the side wall of the fixed cylinder (71) to the inside of the storage chamber (61); the side surface of one end of the opening and closing block (72) located inside the storage chamber (61) is arranged as an inclined surface; the upper surface of the opening and closing block (72) located inside the fixed cylinder (71) is provided with two leakage holes (75) used in conjunction with the dripping inlet hole (62); a sealing block (76) is slidably connected inside the leakage hole (75) near the side of the supporting spring (74); an electric push rod (77) is fixed to the bottom of the sealing block (76); and the top of the side of the electric push rod (77) is fixedly mounted to the bottom of the opening and closing block (72).

9. The intelligent titration device for a cuvette according to claim 8, characterized in that: An opening and closing motor (78) is fixedly mounted at the bottom of the partition (6); an output shaft of the opening and closing motor (78) passes through the interior of the storage cavity (61) and is fixed with a rotating plate (79); an opening and closing wedge block (710) used in conjunction with the opening and closing block (72) is fixed on the side of the rotating plate (79).

10. The intelligent titration device for a cuvette according to claim 1, characterized in that: The stirring assembly (9) comprises a plurality of fixed rods (91) uniformly fixed on the inner wall of the shell (1) and located below the partition (6); a heating rod (92) is inserted and fixed on the opposite end of the fixed rod (91); the bottom of the heating rod (92) is inserted into the solution of the cuvette (11); and the bottom of the cuvette (11) is buckled and fixed to the top of the rotating platform (8).

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