64results about How to "Reduce buoyancy" patented technology

The utility model relates to the technical field of sediment measurement, in particular to a pile bottom sediment measuring device which comprises a protective frame and a balancing weight, the bottom end of the protective frame is fixedly connected with a supporting base, the surface of the balancing weight is fixedly connected with a measuring line, and one end, away from the balancing weight, of the measuring line is fixedly connected with a pull rope. The outer surface of the measuring line is fixedly connected with a limiting block, and the bottom end of the balancing weight is movably connected with a rotating ball. Under the action of the control panel, the action size of the torsion spring is controlled, the buoyancy of overall descending of the equipment is reduced, the influence of the buoyancy on the descending state of the protection frame is avoided, under the connection of the placement bin and the counterweight balls, the effect of regulating and controlling the action weight of the counterweight block is achieved through the change of the number of the counterweight balls, and the use performance and effect of the counterweight block are improved; and under the cooperative use of the limiting block and the limiting block, the control of the sliding direction of the measuring line on the protection frame is realized, and the measurement and use effect on the sediment thickness is achieved.

The invention relates to the technical field of water quality monitoring, in particular to a fluorine ion monitoring device applied to pasturing area water quality. The existing equipment is difficult to clean floccules on a filter screen, so that the filter screen is not good enough in filtering effect on well water, the accuracy of a detection result of a detector on fluorine ions in the well water is reduced, and the detector is difficult to accurately detect underground water at various depths due to the fact that the water levels of the well water are different at different times. A fluorine ion monitoring device applied to water quality in a pasturing area comprises a mounting frame, a protective shell and the like, a protective shell is fixedly connected to the top of the mounting frame. Bristles of the cleaning frame can clean the filter plate; the extrusion block moves upwards to discharge the well water in the detection rod, and the discharged well water backflushes the filter plate, so that the filter plate is cleaner, the clean filter plate can better purify the well water, and the detection accuracy of the detector on the well water is further improved.

The present invention discloses a screw drill with a multifunctional bypass valve, comprising a motor assembly, a universal shaft assembly and a transmission shaft assembly which are detachably installed in sequence, and a bypass valve assembly installed above the motor assembly, wherein the hydraulic valve has two telescopic valve plugs penetrating the housing, and a hydraulic flow channel which drives the two telescopic valve plugs to move relative to each other by hydraulic pressure, and drives the opening and closing of the hydraulic valve when the internal and external hydraulic pressure difference of the bypass valve assembly changes. In the present invention, a combination of a movable valve core and a hydraulic valve is adopted, and the working environment of the screw drill can be judged by itself and corresponding judgments and actions can be made, which effectively reduces the problem that the types of faults that are difficult to detect and the corresponding remedial and anti-damage measures are not easy to make when the screw drill is operating underground.

The utility model relates to the technical field of sonar detection equipment, in particular to a seabed sonar detection device, which comprises two hemispherical shells, the two hemispherical shells are hermetically connected through bolts, a base is fixed at the bottom end of one of the hemispherical shells, a sonar detection assembly is mounted on the base, and the sonar detection assembly is connected with the two hemispherical shells through bolts. A cover plate is fixed to the top ends of the two hemispherical shells, a connecting assembly is fixed to the top end of the cover plate, inner cavities are formed in the inner sides of the hemispherical shells, communicated side cavities are formed in the side edges of the two hemispherical shells, and liquid guide pipes extending to the outer portions of the hemispherical shells are fixed to the bottom ends of the side cavities. The whole device is subjected to pressure relief and exhaust work, the overall buoyancy of the device is reduced, the speed is higher when the device falls to a deep sea area, seawater is discharged outwards from a liquid guide pipe through a liquid discharging assembly after detection of a sonar detection assembly is completed, the overall buoyancy of the device is increased, and the device can be conveniently and rapidly taken back for next putting work.

The utility model discloses a portable water quality detection structure for environmental monitoring, which belongs to the technical field of water quality detection and is characterized by comprising an air bag, a support is fixedly connected to the outer side of the air bag, a tying rope is arranged at the bottom of the support, a detection component is arranged on the outer side of the tying rope, and the detection component is connected with the air bag. The detection assembly is used for detecting the water quality, during detection, the pressure difference inside and outside the ballast chamber can be adjusted by adjusting the position of the piston piece in the ballast chamber, water in the detection environment is extracted from the circulating groove, when the water amount in the ballast chamber is increased, the overall weight is increased, and therefore buoyancy is reduced, and at the moment, sinking occurs; therefore, water quality conditions at different depths can be monitored through an electrochemical sensor, water can be discharged out of a ballast chamber when a piston piece is pushed downwards along the ballast chamber so as to reduce the weight and improve the buoyancy to enable the whole detection assembly to move upwards, and the structure is limited through a limiting assembly in the moving process.

The invention provides a multi-depth sampling device for water detection, and belongs to the technical field of water detection, the multi-depth sampling device comprises a sampling frame, a plurality of sampling seats are slidably arranged in the sampling frame, annular cavities are formed in the sampling seats, and an opening and closing mechanism is arranged in each sampling seat; when the depth needing to be sampled is positioned, a plurality of groups of limiting plates can be pushed to retract into a plurality of sampling seats respectively, and the sampling seats are pulled to move to the required sampling depth respectively, so that the sampling seats can be positioned respectively under the cooperation of a limiting assembly, and the effect of positioning the sampling depth is achieved; the sampling limitation is effectively reduced, the requirements of different sampling points can be met, the time and labor cost in the sampling process is reduced, meanwhile, interference of suspended solids, algae and the like in the upper-layer water body in the sampling process can be avoided, and it is ensured that the collected water sample can truly reflect the water quality condition of a target water layer.

The invention relates to the technical field of robot communication control, in particular to a recoverable buoy system for a modular underwater robot and a control method.The buoy comprises a shell, a communication module and an acquisition module, and an adjusting module comprises a buoyancy adjusting mechanism and a gravity center adjusting mechanism; the buoyancy adjusting mechanism adjusts the action of an electromagnetic valve according to the buoy depth to realize buoyancy adjustment, and the gravity center adjusting mechanism adjusts the gravity center position according to a preset gravity center position and a gravity center adjusting curve; the power module comprises a first power set and a second power set. The control module is used for determining the adjusting mode of the buoyancy adjusting mechanism, the adjusting mode of the gravity center adjusting mechanism and the adjusting mode of the power module. And the power supply module realizes effective positioning and flexible release and recovery of the buoy, and promotes the same-speed cooperative movement and real-time communication of the buoy and the underwater robot.

The present invention discloses an autonomous underwater robot for aquaculture, which comprises: an upper cabin body located at the top and two lower cabin bodies located at the bottom, all of which are connected by a T-shaped bracket so that the three are parallel to each other and arranged in a herringbone shape; the top of the T-shaped bracket is connected to the upper cabin body, and the two sides of the bottom thereof are respectively connected to the two lower cabin bodies; the upper cabin body comprises a lighting module, a buoyancy adjustment module, a vertical thruster module, an electric control module, and a stern of the upper cabin body connected in sequence from front to back; a video image acquisition module is installed above the T-shaped bracket for shooting water surface or underwater images. The stern of the upper cabin body is towed and connected to a surface communication buoy by a coaxial watertight cable; a variety of sensors are installed on the T-shaped bracket. After diving and landing on the bottom, the "herringbone"-shaped structure can maintain stable support; when the present invention is recovered to land, the "herringbone"-shaped structure does not require a special bracket and can also be stably placed.

The present invention relates to the technical field of inflatable rafts, and discloses an adaptive buoyancy regulating device for an inflatable raft, including an exhaust intensity control mechanism and an intake speed control mechanism, wherein a second longitudinal shell fixedly mounted on the upper surface of a side raft and having a hollow structure inside is provided inside the second longitudinal shell, a conical moving block placed inside the second longitudinal shell and controlling the gas flow speed by controlling the gap between the second longitudinal shell and the inner wall, and a longitudinal threaded rod capable of driving the conical moving block to move longitudinally. The adaptive buoyancy regulating device for an inflatable raft is symmetrically mounted on the sides of two wing rafts, and when the raft body of the inflatable raft moves too fast, seawater can be poured into the inside of the side raft shell, thereby reducing the buoyancy of the side raft, and then reducing the buoyancy of the entire inflatable raft, so as to improve the stability of the inflatable raft, thereby adaptively controlling its buoyancy according to the movement speed of the inflatable raft, and improving the safety of the inflatable raft during operation.

The invention provides a falling type leakage cut-off device and application, the falling type leakage cut-off device comprises a pipe wall, a buoyancy plugging piece and a base, and the buoyancy plugging piece is arranged at the top of the pipe wall and slides up and down along the inner wall of the pipe wall; the base is arranged at the bottom of the pipe wall, the base is tightly attached to the buoyancy plugging piece during working, it can be guaranteed that when a medium leaks, due to the fact that the buoyancy obtained by the buoyancy plugging piece is reduced, the buoyancy plugging piece moves downwards to press the sealing face of the base, and then leakage of the downstream medium is cut off; and plugging during pipeline leakage is guaranteed, and the medium leakage rate and the personnel injury risk are reduced in time.

The application belongs to the technical field of pile foundation construction, and discloses an underwater automatic pile cutting system and method for pile foundation construction, which comprises an automatic pile cutting control unit and an automatic pile cutting device; the automatic pile cutting control unit comprises an electrical control module, a sensing module, a rotary drive control module and a feeding drive module, which are arranged at different positions in the automatic pile cutting device; the automatic pile cutting device comprises a pile cutting working platform, a hoisting steel wire rope and a crane. The underwater automatic pile cutting which cannot be visually observed in pile foundation construction is realized through the cooperation of software and hardware, the sinking speed of the cutting device can be accurately measured and controlled in the sinking process of the automatic cutting device through the positioning rope of the crane, the stable operation is ensured, the cutting head of the rotary mechanism is equipped with four circular blades, the rotation speed and the feeding speed of the blades are controlled through a servo motor, and the cutting efficiency and quality of the automatic rotary cutting are ensured.

The invention discloses a bag squeezing and expanding pile forming method. A bag squeezing and expanding pile comprises a prefabricated pipe pile and a plurality of slurry bags fixed to the side wall of the prefabricated pipe pile. The bag squeezing and expanding pile forming method comprises the steps that pile hole forming and mortar replacement are carried out in a to-be-constructed area, then a prefabricated pipe pile is placed in a formed hole, and after the prefabricated pipe pile is placed in a pile hole of a foundation, concrete slurry is injected into a slurry bundling bag or into the slurry bundling bag and the prefabricated pipe pile; and the slurry bundling bag becomes an annular expansion ring body surrounding the prefabricated pipe pile and is embedded into a foundation. According to the bag squeezing and expanding pile, the nodes are additionally arranged on the pile body, so that the compression resistance and the pulling resistance of the pile body are achieved; meanwhile, the in-column water accumulation steel pipe is additionally arranged at the top of the pile to control the height of underground water, and the buoyancy of the pile is reduced.

The invention provides a flotation separation method for molybdenite and bismuthite. The flotation separation method comprises the following steps that an ore sample containing the molybdenite and the bismuthite is sorted, crushed and ground to serve as a flotation sample; minerals and water are mixed to form ore pulp, and the pH value of the ore pulp is adjusted to a certain value; adding a certain amount of oxidizing agent into the ore pulp and stirring; adding a certain amount of inhibitor into the ore pulp, and stirring; a certain amount of collecting agent is added into the ore pulp, and stirring treatment is conducted; adding a certain amount of foaming agent into the ore pulp, and stirring; and S5, carrying out foam flotation on the ore pulp obtained in the step S5, respectively filtering, drying and testing a foam product and a tank bottom product after flotation, and calculating the recovery rate. The efficient and environment-friendly collecting agent and selective inhibitor are provided, efficient separation of molybdenite and bismuthite can be achieved, the utilization efficiency of mineral resources is improved, the influence on the environment is further reduced, and technical support is provided for sustainable development of mines.

The utility model discloses a subway AFC system trunking ponding monitoring alarm device, and relates to the trunking ponding monitoring field, the device comprises a signal transmitting module and a signal receiving module, the signal transmitting module is in data connection with the signal receiving module, the signal transmitting module comprises a water immersion sensor and a transmitter, the transmitter is in data connection with the signal receiving module, and the water immersion sensor is in data connection with the signal receiving module. The emitter comprises a first power supply, the water immersion sensor is connected with the emitter, the water immersion sensor is placed between two adjacent AFC wire duct cover plates, and the emitter is placed in an AFC wire duct, so that the problems that time and labor are consumed and operation and maintenance cost is increased due to the fact that accumulated water in the wire duct is temporarily treated in a manual regular water pumping mode can be solved; the problem of water accumulation in the wire duct cannot be effectively solved; and the water accumulation condition in the middle of the wire duct between wire duct cover plates cannot be observed manually, so that potential safety hazards exist.

The invention relates to the technical field of pelochelys bibroni breeding oxygenation, in particular to oxygenation pump equipment for pelochelys bibroni breeding oxygenation, which comprises a pump body assembly, a material suction assembly is arranged on one side of the pump body assembly, the material suction assembly comprises a mixing head, first pipelines, a material suction head, a lower plate, a pressing head, a threaded rod and an upper plate, the front and rear sides of the mixing head are connected with the first pipelines, and the first pipelines are connected with the lower plate. A mixing head is arranged on the side, close to the pump body assembly, of the first pipeline, a material suction head is arranged on the side, away from the mixing head, of the first pipeline, a lower plate is arranged on the side, close to the pump body assembly, of the first pipeline, and a pressing head is arranged on the side, away from the pump body assembly, of the first pipeline. According to the device, air bubbles can be diffused in water as much as possible, oxygenation can be carried out on the whole area of the device more conveniently, the flow can be controlled, and therefore mixing of water and air is more convenient.

The invention discloses a shield tunnel decompression, drainage and anti-floating comprehensive management system and a construction method thereof. The comprehensive management system is installed during the construction period of the shield tunnel, and comprises a bag-enlarged drainage anchor rod, a drainage pump, a water storage tank and a control system; the bag-enlarged drainage anchor rod can effectively prevent the tunnel from floating up by reducing the pressure through drainage, and can also provide sufficient pull-out resistance through the enlarged bag; by adopting annular steel beams and longitudinal steel beams, the pull-out resistance reaction force provided by the bag-enlarged drainage anchor rod is evenly distributed on the pipe segment in the water storage tank area at the bottom of the shield tunnel, effectively preventing the deformation and dislocation or local damage of the pipe segment caused by uneven stress; the bag-enlarged drainage anchor rod and the water storage tank of the invention work together to reduce the pore water pressure in the soil layer at the bottom of the shield tunnel by drainage to reduce the buoyancy of the shield tunnel, and at the same time increase the water storage capacity in the water storage tank to increase the deadweight of the shield tunnel, so as to comprehensively prevent and control the floating of the shield tunnel.

The utility model discloses a concrete dam reinforcing structure, which relates to the technical field of concrete dams and comprises a concrete dam body, the concrete dam body comprises a dam body and a foundation, an anti-seepage component is mounted on one side of the dam body, both the dam body and the foundation are made of concrete, an anti-floating structure is mounted in the concrete dam body, and the anti-floating structure is connected with the anti-seepage component. The anti-floating structure comprises a plurality of water pumping pipes which are distributed at equal intervals, the water pumping pipes are fixedly installed in the concrete dam body, a plurality of arch-shaped grooves which are distributed at equal intervals are formed in the foundation, the bottom ends of the water pumping pipes are located in the corresponding arch-shaped grooves, drainage pipes are fixedly installed at the top end of the dam body, and the drainage pipes communicate with the water pumping pipes. The contact area of the foundation and the ground is reduced, seepage water in the arch-shaped groove is completely pumped through the water suction pump and the water suction pipe and discharged through the drainage pipe, buoyancy generated by ground seepage water on the concrete dam body can be effectively reduced, and the stability of the concrete dam body is protected.

The present invention relates to the technical field of platforms, and in particular to a pile driver mobile construction platform device on water, comprising a casing, an outer end of the casing being slidably connected to an annular base plate, an upper end of the annular base plate being slidably connected to an annular movable plate, an upper end surface of the annular base plate being recessed downward to form an annular groove, an annular gear being installed inside the annular groove toward the inner wall, an outer end of the annular gear being meshed with a rotating gear, a first driving device being installed on the upper end of the annular movable plate, an output shaft of the first driving device being connected to the rotating gear, an annular sawtooth being installed in communication with the lower end of the casing, a lifting member being installed on the upper end of the annular movable plate, a clamping member being arranged in the lifting member, a plurality of functional members being equidistantly arranged on the lower end of the annular base plate, a plurality of air bags being equidistantly installed on the lower end of the annular base plate, and outer ends of the plurality of air bags being connected to an installation connecting pipe. The design enables the casing to be effectively inserted into the ground in the water, effectively ensures stable installation of the casing, effectively reduces the probability of leakage etc. occurring at the lower end of the installed casing, effectively ensures subsequent normal construction, and improves the use effect.

The invention is suitable for the technical field of marine fishery, and discloses monitoring equipment for marine fishery. The device aims to solve the technical problem that in the prior art, fish school monitoring limitation is large, the device comprises a lower shell and an upper shell, the lower shell and the upper shell are fixed together, a monitoring assembly is installed on the lower shell, and an air cavity system is arranged in the upper shell and the lower shell; according to the device, seawater is decomposed to generate water-insoluble gas for gas filling of the whole gas cavity system, the whole gas cavity system can be used for changing the buoyancy of the whole device, the buoyancy of the device can be automatically increased after the electricity of the device is used up, and the device can be used for water-insoluble gas filling of the whole gas cavity system. The equipment floats to the sea surface and is charged through direct solar radiation, and after charging is completed, the equipment can be automatically deflated, buoyancy of the equipment is reduced, the equipment enters the seabed again and suspends, and the growth condition and distribution of seabed fish schools are flexibly monitored.

The invention discloses a multi-degree-of-freedom underwater robot, and relates to the technical field of submarine cable inspection, the multi-degree-of-freedom underwater robot comprises a main body, a fixing frame is fixedly arranged in the main body, and two sides of the bottom of the main body are rotatably connected with clamping guide plates. After the robot body dives to the position of a submarine cable, under the action of two sets of bidirectional air cylinders, the two sets of clamping guide plates clamp the outer side of the cable to a certain degree, and when the robot body advances in the seabed, under the clamping action of the two sets of clamping guide plates on the outer side of the cable, the cable is clamped by the two sets of clamping guide plates; a worker only needs to enable the main body to advance through a remote controller, so that the main body can carry out advancing inspection operation along the trend of the cable, and the angle of the main body does not need to be adjusted in real time, thereby avoiding the situation that the worker needs to adjust the advancing direction of the main body in real time due to improper operation, so that the overall cable inspection time is prolonged; and the overall working efficiency is effectively improved.

The utility model provides a gantry line electroplating floating frame which comprises a suspension frame body, a detection assembly and a controller, a plurality of through holes for reducing buoyancy are formed in a bottom shielding plate of the suspension frame body at intervals in the length direction, the buoyancy of electroplating liquid on the suspension frame body can be effectively reduced, upward acting force of the suspension frame body on a PCB is reduced, and the electroplating quality of the gantry line is improved. The bending deformation of the PCB is reduced; a movable shielding plate is arranged on the side face, back on to a bottom shielding plate, of a vertical shielding plate of the suspension frame body, the movable shielding plate is in sliding fit with the vertical shielding plate in the vertical direction, when a small-size PCB is produced, the downward pressing effect of the PCB on the suspension frame body is reduced, and at the moment, the descending height of the suspension frame body is reduced; the movable shielding plate can be kept in a sinking state so as to ensure the shielding area for the current; the detection assembly comprises inductors and vertical rods which are matched in a one-to-one correspondence mode, and the controller judges the state of the suspension frame body by detecting whether all the inductors are triggered or not and whether the triggering interval of the four inductors is larger than a preset value or not.

The present invention relates to the field of water quality monitoring technology, and in particular to a fluoride ion monitoring device for water quality in pastoral areas. It is difficult for existing equipment to clean the flocculants on the filter screen, resulting in the filter screen's filtering effect on well water being not good enough, which in turn leads to a reduction in the accuracy of the detector's detection results of fluoride ions in well water. Moreover, since the well water level is different at different times, it is difficult for the detector to accurately detect groundwater at various depths. A fluoride ion monitoring device for water quality in pastoral areas includes a mounting frame and a protective shell, etc.; the top of the mounting frame is fixedly connected to the protective shell. The bristles of the cleaning frame will clean the filter plate; the upward movement of the extrusion block will discharge the well water in the detection rod, and the discharged well water will backwash the filter plate, making the filter plate cleaner, and then the clean filter plate can better purify the well water, thereby further improving the accuracy of the detector's detection of well water.

The embodiment of the invention provides a method and device for improving the recovery efficiency based on CO2 microbubbles and forward pressure driving. The method comprises the steps that on-site injection parameters are obtained, the on-site injection parameters comprise the pressure flooding agent injection amount, the pressure flooding agent injection speed, the soaking time and the CO2 microbubble gas-liquid ratio, and the on-site injection parameters are injection parameters corresponding to the target recovery ratio in multiple recovery ratios; the multiple recovery rates are obtained by conducting petroleum simulation recovery on the target well based on different injection parameters; the target recovery rate is the highest recovery rate in the maximum change rate; according to the pressure flooding agent injection amount and the pressure flooding agent injection speed, a pressure flooding agent is injected into the target well; according to the soaking time, soaking treatment is conducted on the target well injected with the pressure flooding agent; cO2 microbubbles are injected into the target well subjected to soaking treatment, and the CO2 microbubbles are obtained according to the gas-liquid ratio of the CO2 microbubbles; and oil recovery is conducted on the target well injected with the CO2 microbubbles. According to the method, the recovery efficiency can be improved.

The invention relates to the technical field of bridge engineering, and provides a design method of a gravity type anchorage suitable for complex mountain terrains, which comprises the following steps of: calculating an anti-sliding safety coefficient and an anti-overturning safety coefficient of a current design structure of the anchorage in a region where the current design structure is located; and when any one of the condition that the anti-sliding safety coefficient is smaller than a first preset threshold value and the condition that the anti-overturning safety coefficient is smaller than a second preset threshold value is not met, drainage design is conducted on the area where the anchorage is located, so that the underground water level of the area where the anchorage is located is lowered till the anchorage meets the design requirement. According to the application, the drainage water level design is creatively combined with the anchorage, and the volume of concrete of the anchorage is reduced by reducing the underground water level and reducing the buoyancy of underground water to the anchorage; and the later-stage maintenance cost can be greatly reduced, the durability of the anchorage is improved, the economic effect is remarkable, the defects of a traditional gravity type anchorage are overcome, and important guiding significance is achieved for guiding the structural design and optimization of the suspension bridge gravity anchorage under the complex foundation condition of a mountainous area.

The utility model relates to a sightseeing bamboo raft fixing structure, and belongs to the field of sightseeing bamboo rafts. Comprising a plurality of bamboo raft pipe fittings, a plurality of fixing mechanisms, a seat fixing mechanism and a sunshade mechanism, the bamboo raft pipe fittings are arranged side by side at intervals, the fixing mechanisms are fixedly installed on the bamboo raft pipe fittings and connect the bamboo raft pipe fittings, the seat fixing mechanism is fixedly installed on the bamboo raft pipe fittings, the bottom end of the sunshade mechanism is fixedly connected with the seat fixing mechanism, and the sunshade mechanism covers the top end of the seat fixing mechanism. The seat fixing mechanism not only reinforces the bamboo raft pipe fitting, but also provides a seat function, in addition, a fixed connecting point can be provided for fixed installation of the sunshade mechanism, and the situation that the bamboo raft pipe fitting is damaged due to the fact that the sunshade mechanism is directly and fixedly installed on the bamboo raft pipe fitting is avoided; according to the utility model, the seat and the sunshade mechanism can be mounted and fixed without shielding a hollow bamboo model, so that the dead weight of the bamboo raft is reduced, and the experience feeling of tourists on the bamboo raft is enhanced.

Systems and processes for cleaning a medium in a container include directing a cleaning liquid into the container. The fluidization pump draws the cleaning liquid from the container and returns a portion of the cleaning liquid to the fluidization nozzle, which is directed downwardly into the container. The fluidizing nozzle discharges the cleaning liquid in the form of a jet that comes into contact with the medium, moving the medium upward in the container and fluidizing the medium. The medium is continuously fluidized and agitated for a period of time. In this process, contaminants associated with the medium are separated and become contained in the cleaning liquid. During this process, a majority of the medium is confined within the vessel.

The present invention provides a floor drain. The floor drain comprises a floor drain cavity, a cup-shaped inner liner, an inner liner support and a reset mechanism. The inner liner support connects the floor drain cavity and the reset mechanism and cooperates with the reset mechanism to support the cup-shaped inner liner in the floor drain cavity. The floor drain cavity is a drainage channel. The cup-shaped inner liner comprises a cup body and a cup bottom. The bottom of the cup body is provided with a hole. The cup bottom is used as the bottom seal of the floor drain. The cup bottom is linked with the reset mechanism. The reset mechanism drives the floor drain to return from an open state to a closed state. The cup bottom realizes the opening and closing of the floor drain by clutching with the lower end face of the floor drain cavity. The flow area at the outlet of the lower end face of the floor drain cavity is larger than the flow area at the inlet of the annular channel formed by the inner surface of the floor drain cavity and the outer surface of the cup body. Compared with the related art, the floor drain of the present invention can improve the opening stability and flow rate of the floor drain.

The present invention belongs to the technical field of offshore buoys, and relates to a floating device for marine environment hydrological monitoring, including a lower buoy, an upper buoy, a connecting guide ring, a guide tube, a driving motor and a driving turbine, wherein the upper buoy is connected to the top of the lower buoy, the top of the lower buoy is connected to a connecting steel cable, the outer peripheral wall of the lower buoy is connected to two connecting guide rings, a guide tube is slidably arranged between the two connecting guide rings, a driving motor is installed on the guide tube, and a driving turbine is connected to the output shaft of the driving motor. When the present invention is in use, the marine environment can be monitored through a monitor, and during the monitoring process, the driving turbine can be driven to rotate by the driving motor, thereby driving the monitor to move, so as to adjust the monitoring direction; the piston plate can also be driven to move by the operation of the screw motor to pump seawater into the lower buoy, so that the lower buoy and the monitor sink together, and the depth of the monitor is adjusted to achieve a wider range of monitoring.

The utility model relates to the technical field of pile foundation engineering, and particularly discloses a device for improving the anti-pulling performance of a large-diameter non-soil-squeezing pipe pile, which comprises a pipe pile, a pile clamping device, a pile shoe, a pile bottom rock-socketed layer, a core drilling machine, a concrete pump truck, a water-bearing layer, a hard soil layer and a soft soil layer, a concrete conveying pump is installed at one end of the concrete pump truck, steel fiber concrete is injected into the upper surface of the pile bottom rock-embedded layer, and a vacuum pump is arranged outside the pipe pile. According to the device for improving the anti-pulling performance of the large-diameter non-soil-squeezing tubular pile, a circle of open reinforcement cage is arranged at the pile bottom, and the reinforcement cage and the pile bottom are connected into a whole after steel fiber reinforced concrete is used for sealing the bottom, so that the mechanical occlusal force and cohesive force between a pile body and pile bottom foundation soil can be enhanced, and the anti-pulling performance of the large-diameter non-soil-squeezing tubular pile is improved; the load is better transmitted to a deep solid rock stratum to improve the pulling resistance of the pile, and the pulling resistance of the pile is improved by discharging water around the pile in a water-bearing layer, lowering the underground water level and reducing the buoyancy force in a disguised mode.

The utility model discloses a machine tool spindle oil mist lubrication monitoring alarm device which comprises a main body unit, the main body unit comprises an electric appliance box, the side wall of the electric appliance box is fixedly connected with an oil mist lubrication box, the upper end of the oil mist lubrication box is fixedly connected with an oil cup, and the lower end of the electric appliance box is fixedly provided with a machine tool spindle body; the monitoring and alarming assembly comprises two supporting plates and has the beneficial effects that when lubricating oil is consumed and the liquid level reaches a critical line, the buoyancy of the lubricating oil on the floating plate and the floating ball is reduced, and the push rod is pushed to move downwards under the elastic force action of the reset spring, so that the pressing plate is separated from the trigger; and at the moment, the trigger detects that the pressing plate moves downwards and transmits an electric signal to the touch display screen, and the touch display screen reminds a worker, so that the situation that the lubricating oil is exhausted is found in time, negative effects on the lubricating effect are avoided, and the performance and stability of the machine tool are improved.