94 results about "Burette" patented technology

The invention relates to a titration speed regulation device for drug inspection and analysis and a use method thereof.The titration speed regulation device comprises a speed regulation assembly, the speed regulation assembly comprises a transmission rod and a floating plate, the floating plate is arranged in a burette and slidably connected with the inner wall of the burette, a cover plate is arranged at the top end of the burette, and an operation cylinder is fixed to the top end of the cover plate; a connecting cylinder is fixed at the bottom end of the cover plate and detachably mounted at the top end of the burette in a threaded manner, a through hole is formed in the middle of the operating cylinder, the cover plate and the connecting cylinder in a matched manner, the central axis of the transmission rod and the central axis of the burette are positioned on the same straight line and are perpendicular to the floating plate, and the bottom end of the transmission rod penetrates through the through hole, enters the burette and is connected with the top end of the floating plate; a pressure supply assembly for supplying pressure to the transmission rod and the floating plate is arranged at the top end of the transmission rod, and a friction assembly for generating friction to the transmission rod in the titration process is arranged in the operation cylinder; the titration speed regulation control is realized, the use is convenient, and the analysis efficiency is improved.

The present invention belongs to the field of geological monitoring and discloses a device and method for observing the terminal channel of preferential seepage in large pores and constant water head in loess. The device comprises a camera, a funnel, foam glue, a first burette, a second burette, a three-way pipe for constant water head, a water bottle, a first iron stand, and a second iron stand. One end of the camera is fixed to the first iron stand. A permeable stone is set in the middle of the large opening of the funnel. The surface of the permeable stone is used to fix the original loess sample and the support tube. The space between the support tube and the loess sample is filled with foam glue. The first and third ends of the three-way pipe for constant water head are respectively connected to the water bottle and the first burette. The first burette and the second burette are connected by the second and third three-way pipes. Without disturbing the soil sample and with a fixed water head height, the terminal channel of preferential seepage in large pores and the water supply degree can be quickly observed. The work efficiency is high and the device is flexible and detachable. The device effectively solves the current problems of difficulty in capturing the preferential seepage large pore channels in loess and difficulty in measuring the water supply degree of original loess.

The utility model relates to the technical field of water-based acrylic resin detection, and discloses an automatic titration detection device for water-based acrylic resin, which comprises a detection base, a detection platform is mounted on the detection base, a titration bottle for mixing liquid is arranged on the detection platform, a burette is arranged on one side of the titration bottle, and the burette is connected with the detection platform. A plurality of clamp assemblies for fixing burettes are arranged on the detection platform; by arranging the shaking assembly and the driving assembly, after a titrant and a solution to be detected are put into a titration bottle, the titration bottle is put on the shaking assembly, and the shaking assembly can be rotated by starting the driving assembly, so that the fixed titration bottle also rotates, and two liquids in the titration bottle are shaken and mixed through rotation; by means of the arrangement, titration detection of the water-based acrylic resin can be completed, manual shaking mixing of detection personnel can be avoided, and damage caused by long-time wrist shaking is avoided.

The utility model particularly relates to a high-efficiency steam quality detection device which comprises a dryness and superheat degree detection device assembly, an air-cooled condensing device assembly and a non-condensable gas detection device assembly, the dryness and superheat degree detection device assembly comprises a steam guide four-way pipeline, a first pressure transmitter, a drain valve, a measurement four-way pipeline, a second pressure transmitter and a temperature sensor, and the air cooling condensation device assembly comprises an efficient condenser and an efficient cooling fan. The non-condensable gas detection device assembly comprises an air burette, a first electromagnetic valve, a first pressure differential sensor, a second pressure differential sensor, a condensate water burette and a second electromagnetic valve. The steam quality detection device has the advantages of high precision, high efficiency, high automation degree, capability of completely meeting the requirements of EN285 regulations on steam quality detection and the like.

This invention discloses an automated system and method for determining the trace total acid value of jet fuel. The system includes a sample moving unit, a titration unit, a nitrogen control unit, and a jet fuel total acid value determination unit. The sample moving unit moves the titration cup containing the sample below the titration unit. The nitrogen control unit maintains a nitrogen atmosphere inside the titration cup. The titration unit includes a porous burette, a burette tube, a photometric electrode, and a temperature electrode. The porous burette seals the titration cup. The titration unit injects titrant, mixed solvent, and mixed titration solvent into the titration cup, and determines the titration endpoint using the photometric and temperature electrodes. The jet fuel total acid value determination unit integrates the data from the titration unit to calculate the jet fuel total acid value. This invention eliminates endpoint errors that may result from subjective human judgment using manual indicators, and overcomes the need for machine vision technology, which requires the construction and intelligent training of a dataset of titration endpoint color images, in specialized instrument methods.

The utility model relates to the technical field of chemical experiment appliances, and discloses an adjustable titration volumetric burette stand, a fixing device is composed of a fixing cylinder, a sliding disc, a limiting column, a moving rod and a spring, the fixing cylinder is fixedly installed at the top of a connecting block, the sliding disc is slidably installed inside the fixing cylinder, and the limiting column is installed on the sliding disc. The limiting column is fixedly installed at the bottom of the sliding disc, the moving rod is fixedly installed at the top of the sliding disc, and the spring is connected to the surface of the moving rod in a sleeving mode. According to the adjustable titration volumetric burette rack, a hand wheel is rotated, under the action of a first bevel gear and a second bevel gear, a threaded rod can be rotated, under the action of a threaded sleeve, a connecting block can be driven to ascend and descend, a moving rod is pulled, a limiting column is separated from a limiting groove, a strip-shaped block slides to a proper position, then the moving rod is loosened, and under the action of a spring, the titration volumetric burette rack is fixed. And the limiting columns can enter the limiting grooves again, the strip-shaped blocks at different positions can be fixed, and adjustment is convenient and fast.

The utility model discloses an analytic titration device for medicine inspection, which relates to the technical field of medicine detection and comprises an operating frame and a rotating disc, the rotating disc is positioned inside the operating frame and is rotatably connected with the operating frame, a mounting frame is fixedly mounted at the bottom of the operating frame, and a motor is fixedly mounted at the bottom of the mounting frame. The transmission device has the advantages that the transmission shaft rotates with the disc as the center point, and rotates along the sliding groove formed in the rotating disc while rotating, so that the rotating disc is driven to rotate through operation of the transmission shaft and matching of the transmission shaft and the sliding groove; the burette above the beaker can be changed while the rotating disc rotates, so that the burette does not need to be disassembled and remounted, the problem of frequently replacing the burette is effectively solved, the operation sequence is simplified, the experiment failure caused by untimely titration is avoided, and the detection progress is improved.

The utility model discloses a water quality chemical oxygen demand tester, and belongs to the field of water quality sample detection, the water quality chemical oxygen demand tester comprises a detection rack, a sample rack and a sample test tube, the sample rack slides in the detection rack, and the detection rack is provided with a moving assembly used for driving the sample rack to move; a sample to be detected is contained in the sample tube, the sample test tube is placed in the sample rack, and a burette for titrating a reagent and a stirring device for stirring the mixed reagent in the sample test tube are arranged on the detection rack in a sliding manner. The method has the effects of improving the detection accuracy and improving the safety of workers.

This invention proposes an auxiliary device for accurate burette reading, comprising a clamping assembly with a clamping cavity formed within it for holding the burette. The clamping assembly has a first mounting position and a second mounting position, which are opposite to each other and respectively connected to the clamping cavity. An optical component is located at the first mounting position, comprising a magnifying element and a transparent lens. The transparent lens has graduations, and the magnifying element is located between the transparent lens and the clamping cavity. A color contrast element is located at the second mounting position. By clamping the burette in the clamping cavity at its liquid level, the reading at the burette can be magnified through the transparent lens and magnifying lens at the first mounting position. The second mounting position is opposite to the first mounting position, and the color contrast element at the second mounting position acts as a background to enhance color contrast, facilitating accurate burette reading.

The utility model discloses a chemical analysis and detection device for cement. The chemical analysis and detection device comprises an injection head, according to the cement chemical analysis and detection device, a concentric-square-shaped frame is fixedly installed on the upper portion of an L-shaped installation frame, an injector is placed on the inner side of the concentric-square-shaped frame, the injector is an existing injector, the concentric-square-shaped frame is provided with an injection mechanism corresponding to the injector, the liquid outlet end of the injector is fixedly connected with a liquid conveying hose, and the bottom end of the liquid conveying hose is fixedly connected with an injection pipe. The injection tube movably penetrates through the bottom edge of the L-shaped mounting frame and is fixedly connected with an injection head, a reaction flask is arranged below the L-shaped mounting seat corresponding to the injection head, the L-shaped mounting frame is matched with the concentric-square-shaped frame to mount the injector and the injection tube, and electric driving injection is performed through the injection mechanism, so that titration operation is performed. The burette does not need to be held by hand and a burette valve does not need to be operated for a long time, hand fatigue is reduced, meanwhile, continuous slow titration filling is formed, valve control is not needed, and titration operation is more convenient.

The utility model belongs to the technical field of experimental instruments, and discloses a device for constant-temperature automatic titration, which comprises a constant-temperature box, an electronic thermometer, a magnetic suspension stirrer, a burette and a controller, and a constant-temperature temperature control element is arranged in the constant-temperature box; the constant-temperature control element, the controller and the electronic thermometer jointly form a constant-temperature system to ensure that the temperature of the solution is constant in the titration process. The burette controls the piston to move through the micro motor and the electric telescopic rod which can accurately control the speed, so that automatic titration is realized. A penetrating hole is formed in the top of the constant-temperature box and used for installing an electronic thermometer to monitor solution temperature in real time. The suspended magnetic stirrer is used for accelerating the reaction speed; the observation window is convenient for observing the reaction process. The automatic titration device solves the problem of inaccurate experimental results caused by temperature change of the conventional titration device, has the advantages of automatic titration, constant-temperature control, simplicity and convenience in operation and the like, and is suitable for titration experiments.

The utility model provides a titration device capable of being accurately controlled, which relates to the technical field of analysis and inspection and comprises a base, a bottom column, an upper column, a titration component and a micro peristaltic pump. According to the titration device capable of being accurately controlled, a titrated container is placed on the tray of the weighing instrument, and the weight change of the container and a solution in the container can be monitored in real time through the weighing instrument. Then, the flow of the titrating solution is set by adjusting the operation parameters of the micro peristaltic pump; at the moment, the micro peristaltic pump is started, the pump wheel rotates to drive the hose wound on the pump wheel to work, and the titrating solution in the burette is dripped into the reaction container at the set flow through the hose and the dripper. In the titration process, the weighing instrument monitors the weight change in real time, and an experimenter can adjust the flow and other parameters of the micro peristaltic pump at any time according to experimental data and titration conditions until the titration operation is completed. In the whole process, the flow of the titrating solution is directly controlled without depending on manual work, so that the error is greatly reduced, and the experiment accuracy is improved.

The utility model discloses a device for rapidly detecting the sulfur content of concentrate, which comprises a closed sulfur determination absorber, a knob at the lower end of the closed sulfur determination absorber is connected with an absorption liquid storage bottle, the upper end of the closed sulfur determination absorber is connected with a basic burette, and the basic burette is externally connected with a sodium hydroxide standard liquid storage bottle; a distilled water storage bottle for washing is externally connected to the joint of the closed sulfur determination absorber and the carbon determination furnace; one side of the carbon determination furnace is connected with a second drying tower, the bottom of the second drying tower is connected with a second gas washing bottle, the second gas washing bottle is externally connected with a first drying tower, the bottom of the first drying tower is connected with a first gas washing bottle, the first gas washing bottle is connected with a buffer bottle, and the buffer bottle is externally connected with an air pump. According to the utility model, the open sulfur determination absorber is replaced by the closed sulfur determination absorber, and the washing branch pipe is additionally arranged, so that the application range of a combustion neutralization method is expanded to the determination of sulfur with the content of 0.01-50%, and one set of equipment and one method can meet the requirements of multiple sulfur determination, thereby not only improving the accuracy of an analysis result, but also saving the cost.

The application discloses a kind of simultaneously determining the measurement system and method of soil water characteristic curve and unsaturated permeability coefficient, comprising: sample chamber, pressure chamber, water supply side, drainage side, manual valve, differential pressure gauge, solenoid valve, PC end and electronic scale.PC end is connected with electronic scale, for recording experimental data;Sample chamber is used to place sample, pressure chamber is used to place sample chamber and pressurization, drainage side and water supply side are each provided with three burettes, and are divided into standard burette and measuring burette, wherein standard burette applies variable head method to measure permeability coefficient in permeation experiment, measuring burette is used to measure the change amount of soil water volume, differential pressure gauge is used to measure the head pressure difference of standard burette and measuring burette and connect solenoid valve to realize the automatic control of soil water inlet and drainage.The application has the advantages that: water level is adjusted using solenoid valve, to realize the automation of measurement process;SWCC curve and permeability coefficient can be simultaneously measured;Instrument cost is low, and measurement result accuracy is higher.

The utility model discloses a resin solid content automatic titration analysis equipment, include: base, rotate and install the rotating lever on the top outer wall of base, install motor and install the container on the rotating lever top on the bottom inner wall of base, still include: install the controller on the one end of the top outer wall of base, the other end of top outer wall of base is equipped with the support, and the support one end is equipped with the burette, the burette outer wall is equipped with the electromagnetic valve. The utility model discloses a resin solid content automatic titration analysis equipment, through the synergistic effect of container rotation and stirring subassembly, eliminate titrant local concentration difference, ensure that the reaction is even, potentiometric electrode moves with reciprocating assembly dynamic, avoid local measurement deviation, improve the accuracy of potential monitoring, and each component and controller form closed loop control, and the titration and stirring parameters are automatically regulated, and the end point is accurately judged, reduces artificial error, realizes resin solid content efficient, accurate automatic analysis.

The utility model discloses a medicine detection titration device which comprises a burette, an adjusting mechanism is arranged on the outer surface of the rear end of the burette, an inspection cup is arranged at the lower end of the burette, and a clamping mechanism is arranged on the outer surface of the lower end of the inspection cup. The clamping mechanism comprises a base, a protection plate, a sliding groove, a first containing frame, a connecting rod, a sliding block, a first air cylinder, a groove, a clamping plate, an anti-skid plate, a second air cylinder, a guide plate and a guide groove. The adjusting mechanism comprises a fixing plate, a second containing frame, a U-shaped frame, a baffle, a motor, a limiting block, a limiting groove and a threaded rod. According to the medicine detection titration device disclosed by the utility model, the two groups of first placing racks can be conveniently moved and staggered for use, the inspection cups can be conveniently fed and discharged, the operation is simple, the second placing rack can be conveniently driven to stably lift, the height of the second placing rack can be conveniently adjusted as required, the U-shaped rack can be limited by the baffle, and the practicability is high. And a better use prospect is brought.

The utility model provides a kind of titration device for drug research and development, it is related to the field of pharmaceutical processing equipment, it includes: bottom plate, bottom plate top is used to place conical flask;Stand, bottom plate top is equipped with stand, stand one side is equipped with mounting ring, for the clamping fixation of burette;Clamping assembly, clamping assembly is equipped on the inner wall of mounting ring, for the clamping fixation of burette;And mixing assembly, mixing assembly is equipped on the top of bottom plate, for the mixing of conical flask.This kind of device cooperates through the synergistic effect of clamping assembly, realizes the real-time posture fine adjustment and self-adaptive clamping of burette, adjusts motor based on gyroscope feedback data dynamic control mounting ring angle, offset caused by compensating external force disturbance, ensure that burette is always in vertical equilibrium state;The integrated design of mixing assembly in combination with antiskid component improves the mixing efficiency and fixed safety of reaction vessel.

The utility model provides a valve control system for pipette device belongs to digital titrator technical field, including burette and the integrated seat of burette below, be equipped with piston in burette, the integrated seat is equipped with the flow channel of reagent bottle inside intercommunication, and the integrated seat includes the horizontal check valve of the communication with the outlet pipe, the vertical check valve of the communication with the inlet pipe and is used for switching burette intercommunication flow channel, horizontal check valve or the reversing valve of vertical check valve, horizontal check valve includes first valve seat, first valve ball and elastic member of abutment in proper order, first valve seat is equipped with first through -hole of the intercommunication reversing valve and outlet pipe, first through -hole passes through first valve ball seal, the other end of elastic member is fixed with the shell of outlet pipe, the utility model discloses through the setting of elastic member in horizontal check valve, makes the piston to move up and suck reagent, the liquid and air in guide pipe will not be sucked into burette.

This product is a burette holder for photography used to capture the scale of a burette used in volumetric titration analysis before and after titration. It includes a clamping section for holding the burette, a mounting section for the camera, and a background plate used as a background during photography. Specifically, as shown in the "Reference Diagram Showing the Use State," the clamping section at the top holds a burette filled with a reagent, and the burette is positioned between the camera and the background plate. The camera is positioned facing the burette's scale, and photographs the burette's scale. The clamping section holds the burette by tightening a bolt to an openable, movable member with a semicircular notch with a sponge placed in the area where it contacts the burette. The background plate is attached to the support of the burette holder with adhesive tape or the like. To capture the burette's scale more clearly, the background color can be changed to match the color of the reagent used in titration or the burette being used. This product is suitable for use when using a camera to capture the burette's scale before and after titration.

The utility model discloses a splash-proof titrating head device for a Karl moisture meter, which comprises an infusion bottle and a mounting mechanism, and a burette is fixedly mounted on the infusion bottle; the mounting mechanism comprises a titrating head mounted in the burette, a plurality of penetrating openings penetrating through the titrating head are fixedly mounted on the titrating head, inclined blocks slidably abutting against the inner walls of the penetrating openings are slidably connected in the penetrating openings, a reset piece capable of driving the inclined blocks to reset is mounted on the outer side of the burette, and an outer circular ring is mounted on the outer side of the burette; rectangular blocks opposite to the inclined blocks are fixedly installed on the outer circular ring, the inclined faces of the rectangular blocks abut against the inclined faces of the inclined blocks in a sliding mode, and fixing rods are fixedly installed on the outer circular ring. According to the device, the outer circular ring, the penetrating opening, the inclined block, the reset piece, the splash-proof plate, the rectangular block and the fixed rod are matched, so that the efficiency of the titrating head mounting work is improved, and meanwhile, a titrant is prevented from splashing.

The invention discloses a PH value adjusting titration device for flame retardant processing, and relates to the technical field of PH value adjustment. The PH value adjusting titration device for flame retardant processing comprises a device main body, and the device main body comprises two storage tanks, a flow valve communicated with the storage tanks and a burette communicated with the flow valve. According to the PH value adjusting titration device for flame retardant processing, in the initial titration stage, the titration opening is adjusted to be maximum through the adjusting mechanism, when the titration end point is close, the titration opening is adjusted to be small, the PH value is finely adjusted, and in the initial titration stage, constant extrusion force is applied to the piston through the common gravity action of the first gravity plate and the second gravity plate, so that the PH value is adjusted to be uniform. And during fine adjustment, the second gravity plate is limited through the limiting mechanism, and at the moment, the piston is extruded only through the gravity of the first gravity plate, so that the pressure of the liquid is reduced, and the PH value adjustment efficiency and accuracy are improved.

The utility model belongs to the technical field of liquor detection, and particularly relates to a liquor detection titration device which comprises a titration device body, the titration device body comprises a base, a support and a pipe clamp, the support is fixedly installed on the top of the base, the pipe clamp is installed on the inner side of the support, and an automatic mixing mechanism is arranged on one side of the support; the automatic mixing mechanism comprises a notch formed in one side of the bracket; the rotating column is connected to the inner wall of the notch through a bearing; and the two swing rods are connected to the surface of the rotating column in a sleeving mode, and one end of each swing rod is located on the outer side of the support. The utility model provides a Baijiu detection titration device, which can automatically shake and mix a burette, eliminate the difference of manual operation, reduce the personal error, reduce the pollution or influence of the external environment on detection and avoid cross contamination or sample loss in a non-contact mixing mode.

The burette with the polytetrafluoroethylene tube head comprises a tube body and the tube head, the tube body is a slender glass tube, and the tube head comprises an upper tube of the tube head, a cock part and a lower tube of the tube head. And the tube head upper tube is in threaded connection with the tube body. The cock part comprises a cock sleeve, a cock and a fastening nut, the inner wall of the cock sleeve is matched with the outer wall of the cock, and the cock is provided with a cock hole used for operating the solution to flow out. And the tail end of the lower tube of the tube head is narrowed to form a sharp mouth. The tube body is made of glass. The pipe head is made of polytetrafluoroethylene. The lubricity of the polytetrafluoroethylene material is good, so that the cock disclosed by the utility model has good rotation flexibility, and the problem that the burette is broken when the cock is rotated with force can be avoided. Polytetrafluoroethylene has elasticity, the cock sleeve and the cock are tightly combined, and the water tightness of the burette is high. Due to the two-section burette structure of the tube head and the tube head, after the tube body is damaged, a new tube body is replaced, the burette can be reused, and the cost for purchasing glass instruments can be saved.

The utility model belongs to the technical field of constructional engineering, and discloses a silicon-hydrogen content testing device which comprises a magnetic stirrer, a reaction mechanism is arranged at the top end of the magnetic stirrer, and the reaction mechanism is attached to the top end of the magnetic stirrer; the reaction mechanism comprises a pear-shaped flask, a magnetic stirrer in the magnetic stirrer is located at the bottom end of the inner wall of the pear-shaped flask, the top end of the pear-shaped flask is communicated with a constant-pressure dropping funnel, the tail ends of the silicone tubes are communicated with a gas sampling measuring tube, and the tail ends of the other group of silicone tubes are communicated with a leveling bottle. According to the utility model, gas is released through the reaction of an object to be measured and alkali liquor, water is pressed into the gas measuring pipe, the volume of the released gas can be measured through the liquid level difference of two times, and the content of silicon and hydrogen in the object to be measured can be calculated. Therefore, the detection data can be more intuitively recorded, the accuracy of the data in the detection process is guaranteed, and the chemical reaction is more sufficient in the chemical reaction process.

The utility model belongs to the technical field of experimental equipment, and particularly relates to a bracket special for calcium content titration. The special support for calcium content titration comprises a base, a reagent bottle and a burette, a control panel is arranged on one side of the base, a placement table is arranged above the base, a bottom plate is placed above the placement table through a groove, the reagent bottle is placed on the bottom plate, and the burette is arranged on the bottom plate. An electronic scale is arranged at the position, below the bottom plate, of the placement table; a vertical rod is arranged on the side, away from the control panel, of the containing table, an adjusting plate is arranged on one side of the vertical rod, an adjusting frame of a Z-shaped structure is slidably connected to the adjusting plate, and a lighting lamp is rotationally connected to one end of the adjusting frame through a spherical universal shaft. A supporting rod is slidably connected to the outer side of the vertical rod through an adjusting ring, a movable clamping jaw is slidably connected to the supporting rod, and the burette is clamped on the movable clamping jaw.

This utility model provides a titration device for environmental testing, relating to the technical field of titration devices for environmental testing. It includes a main body structure comprising an I-shaped base, a positioning mechanism on the top of the I-shaped base, and a positioning disk. A rotating rod passes through the interior of the positioning disk and is fixedly connected to the positioning disk. One end of the rotating rod passes through the interior of the I-shaped base, and a slot is provided on the positioning disk. This utility model, by setting a positioning mechanism, allows the test sample tube placed in the placement tube to be repositioned and changed. After being adjusted, the test sample tube is precisely positioned at the bottom of the adjustable burette, enabling the testing personnel to titrate the liquid into the test sample tube without needing to align it, thereby improving the efficiency of the titration operation.

The utility model is applicable to the technical field of medicine inspection, and provides an analytical titration device for medicine inspection, which comprises a bottom plate, a vertical plate is fixedly mounted at the top of the bottom plate, a mounting groove is formed in the vertical plate, a first screw rod is rotatably mounted on the inner wall of the mounting groove, and the top end of the first screw rod extends to the outside of the vertical plate; the connecting block is installed on the first lead screw in a threaded mode, a positioning plate is welded to the connecting block, an installation hole is formed in the positioning plate, and a burette used for medicine inspection is arranged in the installation hole; the clamping mechanism is arranged on the positioning plate and is used for fixing the burette; and the shaking mechanism is assembled on the bottom plate and is used for shaking the container. According to the analysis titration device for drug inspection provided by the scheme, the problem that when an existing titration device is used, an operator needs to frequently pick up a container for a long time to shake, so that the labor intensity is relatively high is solved.

The utility model belongs to the technical field of medicine inspection, and particularly relates to a medicine inspection and analysis titration device which comprises an operation table and a fixing frame, a placing seat and a vertical frame are arranged at the top of the operation table, a first linear motor is arranged on the side wall of the vertical frame, a moving frame is arranged at the moving end of the first linear motor, and a second linear motor is arranged at the moving end of the moving frame. The fixed frame is arranged on the right side wall of the movable frame, a sliding groove is formed in the side wall of the fixed frame, and a two-way screw rod is arranged in the sliding groove. In the application file, in the process of using the titration device for drug inspection and analysis, by adjusting the clamping positions of the burettes, the burettes with different lengths and sizes can be conveniently and vertically fixed; therefore, the titration accuracy and the operation convenience are improved.

The automatic potentiometric titrator comprises a working box and a titrator body, the working box is of a hollow rectangular structure, the top of the working box is open, a liquid discharge pipe is installed at the bottom of the working box and connected with an external pipeline, the titrator body is installed on the left side face of the working box, and the titrator body is connected with the working box. The automatic potentiometric titrator for water quality detection solves the problems that when an existing titrator is used, liquid to be detected is placed in a detection device, a burette and a detection electrode are inserted into a detection bottle, and the titrator is used for detecting the solution, so that the titration time is shortened, and the titration time is shortened. However, after each detection, detection personnel need to clean the burette and the detection electrode, the cleaning process is relatively inconvenient, and the detection efficiency is reduced.

The utility model discloses an experimental titration device for preventive medicine, a rotating ball is embedded into the inner side of a liquid collecting cylinder, one end of the rotating ball is fixedly connected with a rotating rod, and the rotating rod is limited and connected to the edge end of the liquid collecting cylinder through a limiting nut which is in threaded connection with the outer side of the rotating rod; by utilizing the liquid collecting cylinder, the intercepting cover, the rotating ball, the rotating rod, the limiting nut, the through groove, the adjusting groove and the bottom dripping pipe, a titrating solution can be firstly added into the liquid collecting cylinder when the titrating solution is added, so that the phenomenon of scattering is avoided, the convenience of adding the titrating solution is improved, and the titrating solution adding efficiency is improved. Meanwhile, the position angle of an adjusting groove can be conveniently adjusted by rotating a rotating ball in a liquid collecting cylinder, so that the flow speed and the flow rate of a titrating solution can be conveniently regulated and controlled when the titrating solution enters the burette, the titrating solution can be conveniently and flexibly added according to requirements when being added, the subsequent titration requirement is conveniently met, and the titration efficiency is improved. The convenience of the titration experiment is improved.