1411 results about "Liquid level sensor" patented technology

The utility model relates to a secondary ink cartridge assembly for a printer, which comprises a secondary ink cartridge body, the secondary ink cartridge body comprises an ink cartridge body and an ink cartridge cover which are mutually sealed and covered, a high-pressure ink cavity, a low-pressure ink cavity and a normal-pressure ink cavity are arranged in the ink cartridge body, and the high-pressure ink cavity, the low-pressure ink cavity and the normal-pressure ink cavity are respectively provided with a liquid level sensor. The high-pressure ink cavity is sequentially communicated with the printing spray head, the low-pressure ink cavity, the normal-pressure ink cavity, the second ink pump, the bubble removing device and the first ink pump, so that ink flows out of the high-pressure ink cavity, sequentially flows through the printing spray head, the low-pressure ink cavity, the second ink pump, the normal-pressure ink cavity, the first ink pump and the bubble removing device and then flows back into the high-pressure ink cavity, and therefore a self-circulation ink path is formed. According to the secondary ink box, ink between the secondary ink box body and the printing spray head keeps continuous circulating flow, precipitation is avoided, the temperature of the ink entering the printing spray head is appropriate and constant, the bubble content is small, the pressure fluctuation is small, and therefore the printing quality is higher, and the printing effect is better.

The invention belongs to the technical field of high-precision liquid level detection, and particularly relates to a high-precision liquid level detection method which comprises an installation preparation module, an installation position determination module, a comprehensive consideration module and a special installation method module. And the liquid level detection precision can be obviously improved. The photoelectric sensor is sensitive to light change and suitable for directly detecting the liquid surface; the ultrasonic sensor determines the distance by measuring the propagation time of sound waves, and is relatively insensitive to the change of liquid properties. The combination of the two can complement deficiencies and reduce errors.

A method and a system for applying a sealing agent to the inner surface (2) of a pneumatic tire (4) comprising a supply circuit (10) having a sealing agent collection device (11) comprising a tank (14); a sealing agent heating device (12); and a sealing agent supply device (13) implemented by means of a pumping device (17) that supplies the sealing agent to an applicator device (7), a piston (26), an extractor element (28) intended to withdraw the sealing agent and to supply it to the pumping device (17); a piston (26) position control device (30); and a level sensor (29) for detecting the quantity of sealing agent within the tank (14); wherein the passage of the control device (30) at the position of the level sensor (29) determines the beginning of depletion position of the tank (14) and a completely empty position of the tank (14) as a function whereof the extractor element (28) and heating element (12) are actuated.

The invention discloses a liquid level sensor device of a pesticide preparation tank, and relates to the technical field of liquid level measurement. The device comprises a first acquisition module for acquiring internal component parameters of a pesticide preparation tank and working condition parameters of a preparation process, and an initial mounting position determination module for determining an initial mounting position of a radar liquid level sensor according to related parameters; after the second acquisition module acquires liquid level data and an original radar signal, the change amplitude calculation module calculates the change amplitude of the stirring speed, and if the change amplitude exceeds a threshold value, the dynamic adjustment module dynamically adjusts the position of the sensor; and the liquid level compensation value generation module generates a compensation value by using a trained liquid level dynamic compensation model of correlation mapping of the stirring speed and the measurement error in combination with the liquid level data, the original radar signal and the working condition parameters, and finally, the dynamic fusion module fuses the initial liquid level data and the compensation value to obtain an accurate liquid level value. According to the method, the accuracy of liquid level measurement in the pesticide preparation process can be effectively improved by dynamically adjusting the position of the sensor and based on multi-parameter dynamic compensation.

The utility model relates to the technical field of liquid level sensing, in particular to a non-contact capacitance liquid level sensor which comprises a cavity outer wall and further comprises a first capacitance plate and a second capacitance plate which are arranged on the cavity outer wall, the first capacitance plate and the second capacitance plate are shortened to form interdigitals, and the interdigitals are arranged in the direction perpendicular to the liquid level change direction. When the liquid level in the cavity rises or falls, the dielectric constant of the liquid is different from that of the air, so that the capacitance value between the interdigital electrodes changes. Liquid level measurement can be achieved by measuring capacitance changes and combining the signal processing module to calculate the corresponding relation between the capacitance and the liquid level. The sensor is mounted on the outer wall of the cavity and does not need to be in direct contact with liquid, so that the problems of pollution, corrosion and mechanical wear of a traditional contact sensor are avoided, and the service life and reliability of the sensor are improved. In addition, the device has the advantages of stable measurement, quick response, high precision and the like.

The embodiment of the invention provides an anti-overflow control method of a distributor, a controller, the distributor and a storage medium, the distributor is provided with an ingredient output port and a water box, and the water box is provided with a liquid level sensor; then, the first liquid level height of the water box is detected through a liquid level sensor; according to the first liquid level height, a target filling mode and target anti-overflow protection are started, the target filling mode is an automatic filling mode and / or a manual filling mode, and the target anti-overflow protection is automatic filling anti-overflow protection and / or manual filling anti-overflow protection. The liquid level sensor is arranged in the water box, the liquid level height of the water box can be detected through the liquid level sensor so that the liquid level state of the water box can be judged, the target filling mode and target anti-overflow protection can be set according to the liquid level state of the water box, and therefore the situation that water overflows to the ground is reduced, and meanwhile the water filling efficiency is improved. The situation that a user cannot receive water after the overflow water box is full of water is avoided, and the use experience of the user is improved.

The application discloses an oil level sensor for oil tank oil quantity detection, which comprises a sealing plate, a mounting table integrally formed on the upper surface of the sealing plate, a liquid level sensor and a float oil quantity sensor fixed on the lower surface of the mounting table, a connecting rod rotatably arranged on the lower surface of the float oil quantity sensor, a hollow float ball fixed on the lower end of the connecting rod, a positioning pipe arranged in the hollow float ball and fixed on the inside of the positioning pipe, a limiting hole arranged in the center of the hollow float ball, trumpet mouths arranged on both ends of the limiting hole, a limiting rod arranged in the limiting hole, a connecting rod fixed on the upper end of the limiting rod and a limiting plate arranged on the lower end of the connecting rod. The application improves the structure of the float in the existing oil level sensor, can make the float have a larger measuring range, improve the measuring precision of the oil level, can limit the measuring path of the float, and can keep the oil level sensor for a long time of accurate measurement without frequent maintenance, so it is suitable for wide popularization and application.

The invention discloses an automatic vibrating system of a lining trolley, and belongs to the technical field of building construction automation equipment. According to the system, aiming at the problems of response lag and manual operation errors existing in traditional manual vibration, the height change of the concrete liquid level is detected in real time through a liquid level sensing system composed of a plurality of ultrasonic liquid level sensors, and an industrial PLC is adopted to receive and process signals and control a vibration power unit; the vibrating power unit comprises a vibrator motor with specific power and an eccentric wheel vibrating head within the exciting force range, the electric smelting connecting assembly is safely connected with the multiple protection device through a high-temperature-resistant cable, and when it is detected that the concrete liquid level reaches the preset height, vibrating is automatically started, and when it is detected that the concrete liquid level is lower than the preset height, vibrating is automatically stopped. The automatic vibrating device is mainly used for achieving accurate and automatic vibrating operation in tunnel lining concrete construction, and the concrete compactness and the construction quality are ensured.

The invention relates to the technical field of washing water treatment, and discloses a gradient type oil-solid and water pure physical separation system and method for MTO washing water.The separation system comprises a liquid inlet pipe, a liquid inlet valve and a liquid inlet pump are installed on the liquid inlet pipe, and a secondary deslagging system, a secondary oil-water separation system and a buffer water storage tank are sequentially connected to the liquid inlet pipe in the liquid inlet direction; a liquid level sensor and a backwashing system are mounted on the buffer water storage tank; the backwashing system is sequentially communicated with the secondary deslagging system and the secondary oil-water separation system; a buffer flow guide mechanism is installed at the liquid inlet end of the second-stage deslagging system, and a stepped filler assembly is installed in the second-stage deslagging system. A physical gradient separation process is adopted, step-by-step accurate removal from macroscopic particles to microscopic emulsified oil and efficient recovery of oil phase components in wastewater can be realized, the turbidity and solid content indexes of effluent are remarkably improved, and long-period continuous stable operation can be realized.

The utility model provides a double-insurance liquid nitrogen liquid level detection device, and belongs to the field of monitoring equipment of an assisted reproduction laboratory. Comprising an upper cover body, a thermal insulation material column, a liquid level sensor, a temperature sensor and an electric control mainboard. The electric control mainboard is installed on one side face of the upper cover body, the heat preservation material column is connected to the other side face of the upper cover body, a positioning connecting piece is arranged at the end, away from the upper cover body, of the heat preservation material column, and the liquid level sensor and the temperature sensor are arranged in parallel, embedded in the positioning connecting piece and electrically connected with the electric control mainboard. The electronic control mainboard is provided with a display panel used for displaying detection values of the liquid level sensor and the temperature sensor, and the display panel is configured to send alarm information when the detection values are abnormal. The technical problems of difficulty in real-time detection of the liquid level in the liquid nitrogen tank and low detection accuracy caused by structure and detection accuracy defects of a traditional detection mode in the related technology can be solved.

The invention relates to the technical field of water conservancy sand content detection, in particular to a water conservancy and hydrology sand content sampling detection device with a water flow disturbance function and a detection method. Comprising a lifting hanging plate and a sampling barrel, the sampling barrel is composed of a barrel top, a barrel body and a barrel bottom which are detachably connected, a water inlet is formed in the upper portion of the barrel body, an opening and closing structure is arranged on the barrel top, a negative pressure pipe is arranged in the sampling barrel, and a water filtering structure is arranged in the barrel bottom. The suspension assembly is provided with a first jet nozzle arranged along the vertical direction of the outer wall of the cylinder bottom, and the vortex assembly is provided with a second jet nozzle arranged along the tangential direction of the outer wall of the cylinder body. Through the synergistic effect of the multiple sets of jet flow nozzles which are arranged obliquely upwards and tangentially, in combination with rotation of the barrel, three-dimensional spiral turbulent flow is formed, uniform mixing of water samples is achieved, linkage of the floating plate and the liquid level sensor is matched for precise quantity control, the consistency of sampling volumes is ensured, and automation, accuracy and reliability of sand content detection are improved.

The invention relates to a dynamic balance adjusting system for an underwater cleaning robot and a control method of the dynamic balance adjusting system, and the dynamic balance adjusting system comprises an inclination detection module which comprises a plurality of liquid level sensors located on the same transverse plane; the dynamic leveling module comprises a plurality of water spraying pumps which are located on the same transverse plane; the central control unit is electrically connected with the inclination detection module and the dynamic leveling module; the central control unit judges whether the robot body of the cleaning robot inclines or not and judges the position where the robot body inclines on the basis of distance data measured by the liquid level sensors. And when it is judged that the robot body of the cleaning robot tilts, the central control unit controls the water spraying pump located at the tilting position to start water spraying downwards, so that the balance posture of the cleaning robot body is corrected by generating upward water flow thrust. The technical problems that in the prior art, due to inclination or rollover of a robot, the water surface operation efficiency is reduced, and even the robot loses the autonomous working capacity are solved.

The invention provides an automatic assembling platform for a radar liquid level meter shell, and belongs to the technical field of liquid level meter shell assembling. The platform comprises an assembling table, an air suction cylinder, a jacking table and a driving column. A plurality of sets of mounting grooves are formed in the assembling table in a penetrating mode, a plurality of sets of air exhaust channels and clamping cavities are formed in the assembling table, and a plurality of sets of air exhaust fixing holes are formed in each set of air exhaust channel in a communicating mode; the multiple sets of air exhaust channels rotate along with the assembly table to alternately and correspondingly communicate with the air exhaust groove. The jacking table is located below the assembling table and is configured to rotate relative to the jacking table; when rotating along with the assembly table, the driving column is driven by the jacking table to slide and lift in the clamping cavity, and the clamping plate is driven by lifting linkage of the driving column to slide in the mounting groove and used for clamping the horn antenna. According to the automatic assembling platform for the radar liquid level meter shell, the liquid level sensor can be doubly fixed, the liquid level sensor can be fixedly installed conveniently, and the assembled radar liquid level meter can be disassembled.

The invention relates to an integrated filter disc device capable of quickly replacing a filter membrane. The limiting rotary baffle is used for tightly fixing the filtering disc upper part and the filtering disc lower part, a porous net-shaped filtering disc is arranged in an inner space formed by the filtering disc upper part and the filtering disc lower part, and a replaceable filtering membrane is placed on the porous net-shaped filtering disc. Sealing rubber rings are embedded in the lower part of the upper part of the filtering disc and the upper part of the lower part of the filtering disc; a gasket is arranged in the lower portion of the filter disc, the porous net-shaped filter disc is arranged on the gasket to play a supporting role, and a corresponding sealing rubber ring above the lower portion of the filter disc is embedded below the gasket. The invention further discloses application of the integrated filter disc device capable of rapidly replacing the filter membrane in an original microorganism enrichment instrument. The original microorganism enrichment instrument comprises a peristaltic pump, a machine shell, a filtering disc device, a water pipe guiding device, a filtering bag, a printer, a liquid crystal screen, a main board, a controller, a preprocessing storage device, a liquid level sensor, a pressure sensor, an electromagnetic valve, a photoelectric sensor and a flow sensor.

The invention relates to the technical field of mud liquid level monitoring, and discloses a drilling mud liquid level monitoring and alarming device which comprises a drilling mud pool, the drilling mud pool is used for an oil and gas field drilling fluid circulating system, the drilling mud pool receives and deposits drilling fluid returned from a wellhead, and the drilling fluid is recycled by a mud pump after being treated; the monitoring module comprises a bearing frame, a liquid level monitoring assembly, a fluctuation response assembly and a cleaning control assembly; and the cleaning control assembly is associated with the fluctuation response assembly and the liquid level monitoring assembly and is configured to drive the cleaning control assembly to work so as to clean the surface of the receiving end of the photoelectric liquid level sensor when the fluctuation response assembly acts in response to fluctuation. Through the fluctuation response assembly and the cleaning control assembly, automatic cleaning of the liquid level monitoring assembly is achieved, and the problem that monitoring data are inaccurate or even invalid due to the fact that a traditional sensor is prone to contamination in a severe mud environment is effectively solved.

The invention provides an oil reservoir flow regulating agent injection system, a control method thereof and a storage medium, and relates to the field of filling equipment. The system comprises a central control module, a spiral lifting feeding module, a skid-mounted stirring tank module and a high-pressure flow regulating pump skid-mounted module, and the spiral lifting feeding module comprises a shaftless spiral lifting machine, a discharging hopper and a variable-frequency speed regulator; the skid-mounted stirring tank module comprises a tank body, a stirring and mixing module and a signal acquisition module; the signal acquisition module comprises a liquid level sensor and an online viscometer which are mounted on the tank body. According to the oil reservoir flow regulating agent injection system, full-process automatic operation of the flow regulating agent from raw material conveying to high-pressure injection is achieved.

The invention relates to the technical field of hydraulic engineering construction, and discloses a shaft excavation ground surface settlement monitoring device which comprises a base, and a lifting mechanism is installed at the top of the base and used for lifting the position of a top monitoring structure; the rotating mechanism is mounted at the top of the lifting mechanism and is used for adjusting the direction of the top monitoring structure; and the monitoring mechanism is mounted at the top of the rotating mechanism and is used for monitoring ground surface settlement. The method comprises the following steps: step S1, a measuring point laying step; step S2, a data acquisition step; step S3, a data transmission step; s4, a data analysis and early warning step; and S5, a feedback and control step. According to the invention, through the combined application of the static force level gauge and the micro-differential pressure liquid level sensor and the precise positioning of the lifting mechanism and the rotating mechanism, continuous and high-resolution relative elevation measurement can be carried out on the local area around the vertical shaft.

The application discloses a full-automatic milk boiling pot capable of automatically boiling milk without overflowing, which comprises a pot body, a handle, an inner tube, a movable rod, a pot cover, a pressure sensor, a gas permeation hole, a control button panel, an interface, a bottom plate, an insulating plate, a heating disc, a control panel, a fixing column, a supporting block, a discharging cylinder, a connecting pipe, a rack, a temperature sensor, a servo motor, a gear, a first missing groove, a second missing groove, a trapezoidal plug, a guide rod, a first spiral spring, a guide plate, a guide hole, an iron plate, an electromagnet, a fixing frame, a liquid level sensor, a circular ring groove, a connecting rod, a straight cylinder, a discharging hole, a piston ring, a fixing ring, a second spiral spring, a lower blocking ring, an upper blocking ring, a third spiral spring and a gate plate. The application has the advantages of being used for automatically boiling milk, and compared with the traditional technology, the pot cover can be automatically opened during the milk boiling process, the foaming caused by the boiling of the hot milk cannot be discharged, the foaming foam can automatically fall down, and the overflow can be avoided.

This utility model discloses a tunnel fire-fighting foam liquid filling system, belonging to the field of fire-fighting equipment technology. It includes several fire boxes, a foam liquid filling vehicle, and a monitoring center. Both the fire boxes and the foam liquid filling vehicle are networked with the monitoring center to achieve data exchange. Specifically, each fire box contains a foam liquid storage tank and a first control device. The foam liquid storage tank is equipped with a first liquid level sensor, a solenoid valve, a variable frequency delivery pump, and a first flow meter. A flow regulating valve and a second flow meter are installed on the pressure water pipe. All components are connected to the first control device. The foam liquid filling vehicle contains a foam liquid storage tank, a variable frequency high-pressure pump, a battery, a third flow meter, and a second control device. Both the first and second control devices are connected to the monitoring center. This utility model provides a highly efficient, intelligent, and easy-to-maintain tunnel fire-fighting foam liquid filling system.

The invention discloses an anti-freezing shallow groundwater monitoring system and method.The anti-freezing shallow groundwater monitoring system comprises a heat preservation water tank, a detection mechanism and a temperature control mechanism, a heat preservation layer is arranged on the outer side of the heat preservation water tank, and the top of the heat preservation water tank is connected with a water supply pipeline; the detection mechanism comprises a water quality analyzer, a carbon dioxide sensor, a first temperature sensor and a liquid level sensor, and a probe of the water quality analyzer, the carbon dioxide sensor, the temperature sensor and the liquid level sensor are arranged in the water tank and used for detecting underground water; the temperature control mechanism comprises a heating piece arranged at the bottom of the heat preservation water tank, a controller and a second temperature sensor arranged on the inner wall of the water tank, and the controller is electrically connected with the heating piece and the second temperature sensor to control the temperature of the heat preservation water tank. The anti-freezing shallow groundwater monitoring system provided by the invention has the advantages of adaptability to severe cold weather, low energy consumption and high reliability.

The invention discloses a pumpback structure and a control method thereof. The pumpback structure comprises a liquid storage tank, a circulating pump, a pumpback pump and a controller, the circulating pump is connected between the liquid storage tank and the liquid inlet of the load; the pumpback pump is connected between the liquid storage tank and the liquid outlet of the load; a first liquid level sensor is arranged in the liquid storage tank and used for collecting first liquid level data in the liquid storage tank; the controller is in communication connection with the first liquid level sensor and the pumpback pump and used for adjusting the working frequency of the pumpback pump according to the first liquid level data so that the liquid level of the liquid storage tank can be maintained within the first preset liquid level range. According to the pumpback structure provided by the embodiment of the invention, the liquid level fluctuation caused by follow lag and performance difference between pumps is eliminated, the long-term stability of the liquid level in the motor is ensured, and liquid shortage or liquid overflow is effectively prevented; and on the other hand, the frequency of the pumpback pump can be dynamically adjusted according to actual requirements, waste caused by continuous high-energy-consumption operation of the pumpback pump under the existing non-overflow working condition is avoided, and the energy efficiency of the system is remarkably improved.

A liquid level sensor can include a circuit board and a thermistor bridge supported by the circuit board comprising a first pair of thermistors and a second pair of thermistors. A heat sink can be coupled to the circuit board proximate the first pair of thermistors and not the second pair of thermistors. A power supply can be configured to provide pulses of electrical current through the thermistor bridge. A controller in communication with the thermistor bridge can be configured to receive a measurement signal from the thermistor bridge output a low product indication when the measurement signal satisfies a predetermined condition.

1. Name of the designed product: sensor (pipeline liquid level) 2. Use of the designed product: liquid level sensor for household appliances or industrial equipment 3. Design points of the designed product: shape 4. Picture or photo that best indicates the design points: design 1 perspective view 1 5. Design 1 left view is symmetrical with design 1 right view, omitting design 1 left view; design 2 left view is symmetrical with design 2 right view, omitting design 2 left view. 6. Design 1 is designated as the basic design.

The utility model discloses an engineering machinery diesel engine oil supply system which comprises a fuel tank, a first oil supply pipe, a second oil supply pipe, a third oil supply pipe, an electromagnetic valve, a first oil suction pipe, a second oil suction pipe and a liquid level sensor. The first oil suction pipe and the second oil suction pipe are installed at the two ends in the fuel tank respectively, the liquid level sensor is installed at one end in the fuel tank, one end of the first oil supply pipe and one end of the second oil supply pipe are communicated with the first oil suction pipe and the second oil suction pipe respectively, and the other end of the first oil supply pipe and the other end of the second oil supply pipe are communicated with two inlet channels of the electromagnetic valve respectively. One end of the third oil supply pipe is communicated with an outlet channel of the electromagnetic valve, and the other end of the third oil supply pipe supplies oil to a diesel engine power system. According to the utility model, the stability and the flexibility of oil supply are improved, the safety and the fuel oil utilization rate of the system are enhanced, and the problem that the engine flames out due to unsmooth fuel oil supply even if the fuel oil liquid level is very low when the engineering machinery performs large-angle uphill and downhill construction operation is well solved.

The invention relates to the technical field of liquid level detection, in particular to a medical liquid level sensor which comprises a reducer pipe fixedly connected and communicated with a liquid conveying pipeline, the reducer pipe is provided with a plurality of parts with different pipe diameters from top to bottom, and the pipe diameters of the reducer pipe are sequentially reduced from top to bottom. A sensor for detecting the liquid level is arranged at each part with different pipe diameters of the reducer pipe, so that quick response or precise detection of the liquid level can be carried out by utilizing different capacitance changes caused by liquid level changes in different pipe diameters.

The utility model relates to a kind of liquid level sensor assembling mechanism, including workbench, sensor vibration disc feeding mechanism for being used to feed sensor on workbench, sensor positioning transmission mechanism for being used to position and drive sensor, two sealing ring assembling mechanisms for being used to feed and assemble sealing ring, diaphragm supply mechanism for being used to feed diaphragm, diaphragm assembling mechanism for being used to fit diaphragm, detection mechanism for being used to detect sensor after assembly and unloading mechanism for being used to unload sensor, two sealing ring assembling mechanisms are symmetrically installed in the two sides of sensor positioning transmission mechanism, and diaphragm assembling mechanism is installed in the side of sealing ring assembling mechanism away from sensor feeding mechanism.The liquid level sensor assembling mechanism not only realizes automatic assembly, but also improves assembly efficiency and assembly accuracy.

The utility model relates to the technical field of sampling, and discloses a constant pressure sampling device which comprises an upper cover, a shell and a lower cover, a plurality of mounting grooves are formed in the shell, and a plurality of liquid level sensors, an air pressure adjusting device, a buffer plate and a buffer cavity are mounted inside or outside the shell through the mounting grooves. The air pressure adjusting device is used for adjusting the internal pressure of the device, so that the pressure in the sampling process is kept constant; the number of the liquid level sensors is two or more, the liquid level sensor closest to the bottom of the shell is used for setting the zero position of the sampling volume, and the other liquid level sensors are arranged according to different volume sampling requirements. According to the utility model, constant pressure is maintained during sampling through the air pressure adjusting device, pressure is automatically released during feeding, and pressure is automatically increased during discharging, so that the influence of pressure fluctuation on precision is avoided; a plurality of liquid level sensors are arranged in the device, zero positions are arranged at the bottoms of the liquid level sensors, the sampling volume of other liquid level sensors can be adjusted according to needs, and the sampling accuracy and convenience are improved.

This utility model discloses a dosing meter for wastewater treatment, relating to the field of wastewater treatment technology. It includes a metering device body with two inlets at its top and an outlet at its bottom. A liquid level sensor is located on the upper inner side of the metering device body. A flow-diverting mechanism for dispersing the chemicals is located at the bottom inside the metering device body. The flow-diverting mechanism includes a nozzle, which is positioned at the bottom of the outlet. This wastewater treatment dosing meter, through the liquid level sensor inside the metering device body, can detect and measure the dosage of chemicals, preventing excessive dosage that would necessitate secondary treatment. Detecting the dosage also allows for timely replenishment when the dosage is insufficient, effectively preventing incomplete wastewater treatment and increasing the overall applicability in use.

The utility model discloses an absorption and desorption device with a safety instrument system, and particularly relates to the technical field of chemical engineering principle experiment teaching, which comprises a support frame, a water tank fixedly arranged at the top of the support frame, a water inlet pipe arranged at the top of the water tank in a penetrating manner, and an absorption pump fixedly arranged on one side of the water tank, an absorption mechanism is fixedly arranged on one side of the absorption pump and comprises a first conveying pipe fixedly arranged at the output end of the absorption pump, an absorption tower is arranged at one end of the first conveying pipe in a penetrating mode, a connecting pipe is arranged at the bottom end of the absorption tower in a penetrating mode, and a buffer tank is arranged at one end of the connecting pipe in a penetrating mode; and two liquid level sensors are arranged in the buffer tank in a penetrating manner. The absorption and desorption device effectively avoids the influence of flow velocity mismatching of absorption liquid and desorption liquid on the experiment process, further maintains stable experiment conditions and protects normal operation of equipment, and meanwhile, the whole absorption and desorption device is provided with a safety instrument system, so that the safety of the device is improved.

This invention discloses a device for detecting the stability of highway slopes, comprising several positioning bases, each with a fixed liquid storage cylinder and a swinging liquid storage cylinder hinged at its lower end. Both the fixed and swinging liquid storage cylinders contain liquid level sensors electrically connected to a remote communication module. A vent pipe connects the top of the fixed liquid storage cylinder to the swinging liquid storage cylinder on the adjacent upper positioning base, and a liquid passage pipe connects the bottom of the fixed liquid storage cylinder to the swinging liquid storage cylinder on the adjacent upper positioning base. A positioning support rod is positioned between two adjacent positioning bases, with one end fixed to the lower positioning base and the other end rotatably connected to a slider. The slider slides vertically within a sliding groove on the side wall of the higher swinging liquid storage cylinder. This highway slope stability detection device can simultaneously detect both vertical and horizontal displacements of the slope.