46 results about "Archimedes' principle" patented technology

The invention discloses a shale porosity measurement method with an aim to solve problems that conventional shale porosity measurement is low in precision, long in time consumption and uneconomical. The shale porosity measurement method includes: selecting a whole-piece to-be-measured shale sample, subjecting shale to vacuum pumping for 4 hours, heating to 150DEG C under the vacuum condition, taking out after 24 hours and weighing dry weight M1; adopting 3% of a KCl solution to perform pressure saturation for 48 hours, and weighing the weight M2 with a scale after the shale is saturated; measuring 3% of the KCl solution to be p in density and calculating porosity volume V1 of the sample (as is shown in the following formula) on the premise of Archimedes principle, placing the shale sample in a container with nail polish, and measuring the volume V2 of the shale sample; calculating the porosity of the sample as is shown in the following formula. With the method, influence of clay-bound water and crystal water on measurement precision of the porosity can be removed, whether the shale sample is regular or not is not required, the method is economic and practical in measurement of the porosity and high in operability.

A robotic generator that produces electric power and is actuated by the forces of gravity, the Archimedes principle and Faraday's laws of electromagnetic induction.This robotic generator is an ecological automated robot that can be used as a standalone electric power producing machine, the robotic generator can be small in size to supply electric power to a small building or a single family household, or this robotic generator can be made as large size units and can be assembled in multiple large units working together to produce large amounts of electricity.The robot is contained in two boxes, one box is the motive force sealed in a container full of fluids and the second box contains the generator, the gear box, the electronic controls, pneumatic pump, inverter, battery charger and the energy storage in the form of batteries and or fast charging and fast release capacitor bank.The box full of fluids contains the motive force, these devices are the following; gravity chamber, the Archimedes air bag assembly, the mechanical slide and the assembly that guides the gravity assembly and the Archimedes air bag that travels up and down and the mechanical motion assembly that transforms the linear travel force into rotational torque or force as well as the electromagnetic stop assemblies and the shock absorber control devices, sensors hoses and wiring.All these devices work together to provide the force to move and power the shaft rotation to power the gear box which provides the rotational speed to the shaft of the generator with the rotational speed and power to allow Faraday's law of electromagnetic induction to work since the generator has a long coiled wire assembly on its shaft surrounded by north pole and south pole magnets, when the shaft and rotor is turning rapidly the shaft inside the generator turns and electric current is converting the mechanical, moving energy into electrical energy, this electricity can be used directly by electric appliances, lighting and other electrical needs and the excess electricity can be sent to the electric grid or it can be stored into batteries or capacitor banks located at the base of the robot.This robotic gravity generator can resolve many of the current environmental problems the world is facing. Since this it does not produce any green gasses and can eliminate the power grid problems utilities have since power outages due to down power lines due to storms or hurricanes or other weather related problems can be reduced if not eliminated. This robotic gravity generator is a self sufficient stand alone electric producing apparatus.

The invention discloses a device for measuring the free swelling rate and the water content of a rock and a using method thereof. By adoption of the Archimedes principle as a reference, the device utilizes a basic principle that the volume of displaced water of the rock changes with the volume change of the rock in water after the rock swells by water absorption. The structure of the device for measuring the free swelling rate and the water content of the rock is largely simplified by adoption of technical means such as sealing and packaging of a rock sample to be measured with rubber film. The device has characteristics of simple structure, convenient raw material selection, low manufacturing cost, convenient operation, and the like. The whole experiment device is small in systemic error. Experiment results are true, reliable and accurate. The device is suitable for laboratory use, and particularly can be used for simultaneously perform measurement of the free swelling rate and the water content of soft rocks.

The invention discloses a density contrast automatic liquid discharge valve, including a floating ball with the proportion between the two mixed liquor, a mixed liquor input port and a case of the single liquor discharge port, a lever mechanism and a valve port arranged on the discharge port inside the case, wherein the floating ball controls the open and close of the valve port through the lever mechanism. The invention not only can use the density contrast of different liquids, the floating ball level mechanism designed by the Archimedes principle can control the valve port to discharge the liquid, can discharge the liquid accurately for one liquid of the stable mixed liquid and perform the indicating control.

The invention discloses a density measuring method based on magnetic Archimedes principle, comprising the following steps: (1) a medium solution is determined according to the material of a sample, and the medium solution is a paramagnetic medium aqueous-solution; (2) the sample is placed into the medium solution; (3) the medium solution is placed into a magnetic suspension detector, which has two homopolar opposite square magnets; (4) suspension height of the detected sample is measured; and (5) density of the sample is calculated. In comparison with the prior art, the invention has the following beneficial effects: the device in demand is simple to operate; cost is low; measurement results are easy to observe; measurement accuracy is high; and automation is easy to realize.

The invention provides a determination method of volume expansibility and contractibility of an oil well cement solidification material. The method comprises the steps: (1) preparing slurry of the cement solidification material, (2) removing separating influence of the slurry, (3) putting the slurry into a plastic bag or a rubber bag for vacuum seal packaging, removing air and bubbles from the bag, (4) weighing with a density balance, weighing mass of water derived by a sample by using an Archimedes principle, calculating initial volume V0, weighing and calculating the volume V[bag] of the single plastic bag or the rubber bag in a similar way, (5) putting the sample in a curing environment for curing till final setting of the slurry, (6) after the final setting of the slurry, shearing off the plastic bag or the rubber bag, taking out a cement block, (7) continuing curing the cement solidification material under a set condition for preset time, measuring the volume V2 of the sample according to the method in Step (4), and (8) evaluating the volume expansibility and contractibility of the oil well cement solidification material according to the measured V0, V2 and V[bag].The method can precisely evaluate a volume change of the oil well cement solidification material.

The invention relates to a method for optimizing the structure of finished cut tobacco, which comprises the following steps: 1), feeding; (2), selecting cut tobacco; (3) introducing into a cut tobacco breaking channel; (4), making long cut tobacco; (5) mixing uniformly; (6) returning for circulation; and (7) removing impurities. The invention also discloses a device for the structure of the finished cut tobacco. In the invention, based on Archimedes principle, the cut tobacco is classified and then subjected to cutting control, the 3.35 to 2.5 millimeter cut tobacco content is improved to 50 percent from 10 percent, the uniformity of cut tobacco blending and mixing is improved, and the coefficient of quality variation of the finished cigarettes is lowered.

The invention relates to the field of fiber density detection and in particular discloses a method for measuring fiber density. A volumetric flask serves as a measuring container, kerosene serves as a measuring medium, and the fiber density is detected by utilizing an Archimedes principle. The measurement method disclosed by the invention is easy to operate, high in measurement result accuracy and low in cost and is suitable for fiber density measurement of various occasions such as labs and engineering fields.

The invention relates to a measuring method for quantification of central looseness of a casting blank. The method utilizes a principle that the density of a loose part is different from the density of a compact part, so that the central looseness can be described quantitatively. Moreover, the method utilizes the Archimedes principle to autonomously design a casting blank density measuring device. The density measuring device is utilized to measure the densities of a compact part specimen and a loose part specimen of the casting blank, respectively measure the mass of the specimens in water and air, and compute the densities of the specimens so as to quantitatively describe the central looseness of the specimens. Compared with the traditional method that after hot acid corrosion, naked eyes observe to quantitatively grade the central looseness of the casting blank, the measuring method has the advantages of no corrosion, accurate evaluation, small human error, superior measurement environment, visual and clear result and the like, therefore the measuring result of the quantification of central looseness of the measuring method has a more realistic and workable important guiding significance on field production, such as continuous casting, rolling and the like.

A fluid-bed separator comprising a vibrating air distribution plate can be used for dry separation of coal, ore and other materials. The fluid-bed separator comprises a fluid-bed housing, a pressure stabilizing air distribution chamber, a feeding bucket, a discharge device, a dedusting seal cover, a vibrating air distribution device and a base. The dedusting seal cover is connected with the upper part of the fluid-bed housing; a fixing frame, the vibrating air distribution plate, a vibration exciter, a gas predistribution chamber, a gas predistributor and the base are connected with the lower part of the fluid-bed housing; vibration energy is transferred to a fluid bed through the vibrating air distribution plate to prevent bubbles from being generated in a fluid bed layer and form a uniform and stable fluidization state; materials in the fluid bed are layered according to the Archimedes principle; feeding is conducted above the front end of the fluid-bed housing; light products are discharged from above the tail end of the fluid-bed housing; heavy products are discharged from below the tail end of the fluid-bed housing, thereby realizing layering and separation of the materials according to different densities finally; and the separator reduces the effects of the bubbles in the fluid bed, the damage and loss of equipment structures caused by vibration, and unit energy consumption for material separation, and is efficient, energy-saving and environmentally friendly.

The invention discloses a method for measuring porosity by using non-invasive liquid nitrogen, and belongs to the field of porosity measurement. The method comprises the following steps of: firstly suspending a dry test sample above a Dewar flask filled with liquid nitrogen, and weighing the mass D of the dry test sample after the test sample is cooled; secondly, completely soaking the cooled test sample into the liquid nitrogen, and recording the mass S when the mass reading value of the test sample in the liquid nitrogen is unchanged; and finally taking the saturated test sample filled with the liquid nitrogen out, putting the saturated test sample in air, recording the mass corresponding to different moments, drawing a diagram by using the time as transverse coordinates and the mass of the corresponding moment as longitudinal coordinates to solve the instantaneous mass W of the test sample taken out of the liquid nitrogen in the air, and calculating the porosity by using the Archimedes principle. The method is simple and easy to operate and has less possibility of damaging the test sample which is low in strength and is in a fragment form; and hazardous materials and expensive equipment are not required in the process.

The invention relates to a flapping-wing energy-acquiring device of self-moving flaps comprising an energy-acquiring part, flapping wings and a main shaft, wherein the two flapping wings are connected to each other by the main shaft to form a whole; the main shaft of the two flapping wings is positioned through the middle of the energy-acquiring part; the two flapping wings can rotate around the main shaft and the whole can make a heaving motion in a vertical direction; and the energy-acquiring part acquires the energy transmitted by the flapping wings by the movement of the main shaft. The Gurney flaps are applied in the flapping-wing energy-acquiring device of the self-moving flaps. According to Archimedes' principle, the Gurney flaps are designed to be arranged at the trailing edge of airfoils to automatically change the direction based on different directions of the heaving motion, which is equivalent to increasing the camber of the airfoils, thereby increasing the lift coefficient of the airfoils and the energy-acquiring efficiency of the flapping wings. The flapping-wing energy-acquiring device of the self-moving flaps is simple in structure, and automatically realizes the direction changing of the self-moving flaps on the surface of the airfoils based on the different directions of the heaving motion by using Archimedes' principle.

Disclosed is a high polymer material separation method based on a magnetic-Archimedes principle. The method comprises the steps that (1) a medium solution is determined according to the difference of the densities of mixed high polymer samples; (2) the mixed high polymer samples are washed with a washing agent; (3) the mixed high polymer samples are placed in the medium solution; (4) the medium solution is placed in a magnetic suspension detection device, wherein the magnetic suspension detection device comprises two square magnets with same poles arranged in a face-to-face mode; and (5) the high polymer samples with different densities are layered in the medium solution, the different samples are taken out in a layered mode, and separation is accomplished. Compared with the prior art, the method has the beneficial effects that a brand new high polymer material separation method is provided, operation of the required device is easy, the cost is low, the measurement result is easy to observe, the measurement accuracy is high, and the automation of the method is easy to achieve.

The invention relates to the technical field of floating algae collecting, in particular to a domestic pig ecological breeding floating algae collecting device based on the Archimedes principle. According to the technical problems to be solved, the manual floating algae collecting amount is small, and consequently, governing on water pollution and ecological breeding on domestic pigs are not facilitated. In order to solve the above technical problems, the domestic pig ecological breeding floating algae collecting device based on the Archimedes principle is provided and comprises a collecting plate. Through containing holes are formed in the four corners of the top of the collecting plate. Six position limiting mechanisms are fixedly connected with the inner wall of each containing hole atequal intervals, wherein a floating algae filtering mechanism is connected among the six position limiting mechanisms in a clamping manner. Each side of the two sides of the top of the collecting plate is fixedly connected with six first fixing rings. By means of the domestic pig ecological breeding floating algae collecting device based on the Archimedes principle, a large amount of algae on thewater surface are collected, ecological feeding is conducted on domestic pigs, meanwhile, pollution of the floating algae on the water quality is avoided, the environment is protected, and organic combination of environment governing and aquaculture is promoted.

The invention provides a water body sampling unit weight detection method in immersed tunnel pipeline section drift floating immersion, which includes the following steps: step 1, confirming a sampling point and sampling depth; step 2, sampling a water sample through a card cover type water sampler as per the sampling point and the sampling depth confirmed in step 1, and step 3, adopting the Archimedes principle in a laboratory and calculating the water sample unit weight through the method as per the variation of weight of a standardized block in air and the water sample. The method provided by the invention meets the requirement of immersed tunnel construction, is a sampling method for one-step sampling water sample at different depths and at assigned positions based on the fact that little disturbance to the water body is guaranteed, and is a method for measuring the water sample unit weight; the system provides data direct at requirements of different working conditions to support the calculation and control of buoyancy in the construction, improves the construction efficiency, and reduces the engineering risk; and the system and the device are simple, fast and convenient in operation, and are high in accuracy.

The invention relates to a test method for lithium ion battery ceramic diaphragm porosity and belongs to the field of lithium ion battery process material evaluation. The test method for the lithium ion battery ceramic diaphragm porosity provided by the invention comprises the following steps of testing apparent volume of a lithium ion battery ceramic diaphragm sample, and recording the apparent volume as V<0>; testing skeleton volume of the lithium ion battery ceramic diaphragm sample through application of an archimedes principle-gas expansion replacement method and recording the skeleton volume as V<1>; and computing porosity of the diaphragm according to the following formula: P=(V<0>-V<1>) / V<0>*100%. The test method for the lithium ion battery ceramic diaphragm porosity provided by the invention is simple in operation, low in test equipment and condition requirement, and high in operability. A process is easy to standardize and quantify. The porosity of the ceramic diaphragm can be tested relatively precisely.

The invention relates to a non-linear scale specific gravity balance capable of directly weighing the specific gravity of solids of any types, any volumes and any shapes. The balance comprises a pivot and a balance arm, and the balance arm is supported on the pivot. The balance is characterized in the pivot is fixed on a support seat, a counterweight is arranged on the balance arm on the left side of the pivot; the counterweight can be finely tuned toward the left and the right around the position of the counterweight on the balance arm; and a water cup and an object suspension cable device are hung on the balance arm on the right side of the pivot. The pivot consists of a cutting edge which is fixed on the balance arm and takes a triangular prism shape and a line-shaped groove which is fixed on the support seat. The balance has simple and compact structure and integrated functions, and can directly weighs the specific gravity of a solid without the specific value of the weight and the specific value of volume of the measured solid and computation. The balance has simple measurement principle and strong practicability, is a direct embodiment of the lever principle and the Archimedes principle, and can be widely used in laboratories of middle and primary schools as well as ordinary households.

The invention relates to a solid density measurement platform based on a spring balance. The solid density measurement platform can accurately measure the density of a solid by using Archimedes principle, and comprises a base, a liquid container, a solid fixing device, a spring scale, a spring scale fixing device and a bracket rod, wherein the liquid container is installed below the spring balanceand can move up and down along the bracket rod, the solid fixing device is a ball capable of being opened and closed and used for holding a to-be-measured solid, the spring balance and the spring balance fixing device are movably connected so as to replace spring balances with different measurement ranges, and the spring balance fixing device can move up and down along the bracket rod. The measurement method is simple, and comprises: 1, placing a measured solid in the solid fixing device, and measuring the mass M1 of the solid in the air; and 2, placing the measured solid in the liquid container filled with a liquid with a known density ([rho]2), measuring the mass M2 of the solid in the liquid, and obtaining the density of the solid through the Archimedes principle.

The invention discloses a method for testing the gas expansion rate of a lithium-ion battery in the charging and discharging process. The method comprises the steps of 1, measuring the mass of the lithium-ion battery, and recording the mass as m1; 2, placing the lithium-ion battery in a solvent for soaking, measuring the mass of the soaked lithium-ion battery, and recording the mass as m2; 3, according to the Archimedes principle, obtaining the volume of the lithium-ion battery, and recording the volume as V1; 4, connecting the soaked lithium-ion battery to a battery performance test system, setting charging and discharging working steps, obtaining a gas-expanded lithium-ion battery after the mass of the lithium-ion battery gets smaller, and recording the mass of the gas-expanded lithium-ion battery at any time period as n1, obtaining the volume of the gas-expanded lithium-ion battery according to the Archimedes principle, and recording the volume as V2; 5, conducting calculation according to the formula that the gas expansion rate = (V2-V1) / V1*100%. By means of the method, the gas expansion rate of the lithium-ion soft-packed battery in the charging and discharging process can bemonitored in real time.

The invention discloses an experiment teaching aid for verifying the Archimedes principle and a using method thereof. The experiment teaching aid comprises a container with capacity scale marks, 1-5 different polyethylene floating balls of known mass, and a polyethylene floating cup. Each floating ball includes a tail rod, a shell, and a core. During use, the container is filled with fluid of which the density is rho, and the initial volume is recorded as V0.The floating balls of known mass are added. If the floating balls can float on the fluid, the buoyancy F(buoyancy) is equal to the gravity G(ball). After the floating balls are added, the volume V of the fluid can be read directly. The volume V(displaced fluid) of fluid displaced can be calculated according to the difference between scale readings on the container, namely, V(displaced fluid)=V-V0. Thus, G(displaced fluid)=rho*g*V(displaced fluid). F(buoyancy)=G(ball)=G(displaced fluid), namely the Archimedes' principle, can be verified through comparison. The experiment teaching aid has the advantages of simple structure, convenient use, and diversity. The influence of density on buoyancy and the influence of volume on buoyancy can be inspected separately. Moreover, students' interest in learning can be stimulated, and the understanding of knowledge can be deepened.

The invention discloses a fluidized bed sorting experimental machine for arranging a semi-automatic lifting device based on a secondary bed layer. The fluidized bed sorting experimental machine mainly comprises a base, an air distribution chamber, an air distribution plate, filter cloth, a fluidized bed body and the secondary bed layer. The fluidized bed body is arranged on the air distribution chamber, the air distribution chamber is arranged on the base, a secondary air distribution plate forming the secondary bed layer is arranged in the fluidized bed body, and a lever mechanism for adjusting and controlling the position of the secondary air distribution plate in the fluidized bed body is arranged. The fluidization effect of medium solids and experiment materials, such as coal, on the upper portion of the secondary bed layer of the fluidized bed body is better through air entering the fluidized bed body, and coal granules and the like are layered in the fluidized bed body according to the density based on the Archimedes principle. The bed layer fluidization and sorting characters in the sorting process can be remarkably improved through the secondary bed layer. Pressure is applied to one end of a horizontal lever, and is transferred to the secondary air distribution plate, and discharging can be more convenient by lifting the secondary air distribution plate.

The invention discloses a liquid density detection device matched with an analytical balance for use. The liquid density detection device comprises an analytical balance body, a support disc, a beakerbracket, a beaker, weights, a connecting hook and a support frame, wherein the analytical balance body is provided with an electronic scale plate; the support disc is positioned in the electronic weighing plate; the support frame is positioned on one side edge of the support disc; lifting hooks are arranged at two ends of the connecting hook; the upper end of the connecting hook is connected withthe support frame through one lifting hook, and the lower end of the connecting hook is connected with the weights through the other lifting hook; the beaker is arranged above the support disc through the beaker bracket, and is positioned under the connecting hook; the beaker can accommodate the weights and a to-be-measured sample. The detection device has the advantages that the Archimedes principle is adopted, and densities of different liquids can be measured; the operation is convenient, and the accuracy is high; the structure is simple, the practicality is high, and the detection deviceis suitable for being popularized and applied.

The invention discloses a method for calibrating a drop hammer volume. According to corresponding pure water standard densities in a test room ambient temperature of 15-35 DEG C given by an international temperature standard pure water density table in 1990, there is a different pure water density per 0.1 DEG C. Therefore, pure water is adopted for calibration of the drop hammer volume, the density of the pure water can be known by table lookup only by determining the temperature of the pure water, so that the standard volume of the drop hammer under the temperature is obtained according to the Archimedes principle F float = G discharge = rho liquid gV discharge. The calibration method stabilizes the pure water temperature at a fixed value, and errors caused by the temperature inaccuracy of the drop hammer volume calibration are avoided, making the volume calibration more accurate and reliable.

The invention discloses a bee-keeping automatic feeding device. The bee-keeping automatic feeding device includes a feeding seat and a sugar and water injection opening formed in the feeding seat; a rotation hole is formed in the bottom of the sugar and water injection opening; a rotation shaft is clamped in the rotation hole; the rotation shaft is fixed on two sides of a head of a floating rod; a floater is connected to a tail of the floating rod; and a plug is movably fixed on the floating rod corresponding to the sugar and water injection opening. The bee-keeping automatic feeding device is simple in structure, is easy to use, can avoid springs in the original automatic feeding devices, and can solve the problem that water shortage due to small volume of water tanks, and then automatic feeding is difficult to complete, and the springs rusts so as to shorten the service life of the device and affect bee health; the automatic feeding device can use the Archimedes principle to allow the floater to possess an upward buoyancy force to drive one end of the floating rod to rotate, and allow the plug on the other end of the floating rod to block the sugar and water injection opening to complete automatic feeding; and the bee-keeping automatic feeding device can reduce the cost, is long in service life, and is easy to promote and use.

The invention discloses a buoyancy demonstration device based on physics teaching. A seat plate is included; two plug bushes are welded at the top end of the seat plate; a weighing cup is placed on one side of the top end of the seat plate; scales are arranged on one side of the weighing cup; a screw rod is rotationally mounted on one side of the top end of the seat plate through a bearing; a guide rod is further welded to one side of the top end of the seat plate; the screw rod is movably provided with a supporting arm through a thread; the guide rod penetrates through the supporting arm; theguide rod and the supporting arm are movably installed, the horizontal portion of one end of the supporting arm extends into the weighing cup, a connecting rod is movably arranged at the horizontal portion of one end of the supporting arm in a penetrating mode, a contact piece is fixedly installed at the vertical portion of one end of the supporting arm through a screw, a contact block is fixedlyinstalled at one end of the connecting rod, and the contact block is located below the contact piece. The buoyancy demonstration device is reasonable in design structure, simple to operate, convenient to use, capable of verifying the Archimedes principle and more accurate in data.

The invention relates to physics teaching auxiliary equipment, in particular to a demonstration device for visually verifying the Archimedes principle, which comprises a rack and two water containing tanks which are consistent in size and are arranged side by side, and overflow ports are formed in the front ends of the water containing tanks. The demonstration device further comprises a water filling mechanism, wherein the water filling mechanism is mounted on the rack and used for filling water into the two water containing tanks respectively; two liquid injection weight increasing mechanisms, wherein the liquid injection weight increasing mechanisms and the water containing tanks are installed on the rack in a one-to-one correspondence mode, the liquid injection weight increasing mechanisms and the water containing tanks are both located above the water containing tanks, the liquid injection weight increasing mechanisms are used for conducting liquid injection weight increasing work on a buoyancy part used for conducting a buoyancy test, and the buoyancy part is used for conducting a buoyancy experiment in the water containing tanks; a driving mechanism mounted on one side of the rack and used for driving the water filling mechanism and the two liquid injection weight increasing mechanisms to work at the same time; and two measuring mechanisms mounted on the front sides of the water containing tanks in one-to-one correspondence with the water containing tanks.

The invention discloses a physical experiment device. An Archimedes principle demonstrator which can directly measure the buoyancy and the volume of an object immersed in water, further measure the gravity of the object with liquid displaced and complete an experiment related to the middle school physics buoyancy, mainly comprises a water tank, pigment water, a left pipe, a cylinder sample with scales, a connector, a left supporting plate, a digital push-pull dynamometer, a right pipe, a rotating hand wheel, a gear, a right supporting plate, a graduation ruler, a rack, a piston, a sealing ring, a supporting frame, a gear shaft and the like. The newly designed experiment device has high measurement accuracy, simple experimental operation, novel whole structure design, simple structure and easy to manufacture, material selection is convenient. In addition to Archimedes principle demonstration, the demonstrator can also measure the density of liquid, measure the density of solids, and explore the relation between the buoyancy and the immersion depth of the object in liquid.