849 results about "Electromagnetic pump" patented technology

A medical device known as an implantable therapeutic substance delivery device is configured for implanting in humans to deliver a therapeutic substance such as pharmaceutical compositions, genetic materials, and biologics to treat a variety of medical conditions such as pain, spastisity, cancer, and many other conditions. The therapeutic substance delivery device has a permanent magnet solenoid pump that is energy efficient, accurate, small, compatible with therapeutic substances, and has many other improvements. The implantable therapeutic substance delivery device has a housing, a therapeutic substance reservoir, a power source, electronics, and a permanent magnet solenoid pump. The therapeutic substance reservoir is configured to contain a therapeutic substance and is coupled to the housing. The power source is carried in the housing to power the electronics and solenoid pump. The electronics are coupled to the solenoid pump and the solenoid pump is coupled to the therapeutic substance reservoir. The permanent magnet solenoid pump is configured for pumping therapeutic substance from the therapeutic substance reservoir through an infusion outlet at a programmed infusion rate. Many embodiments of the permanent magnet solenoid pump and its methods of operation are possible.

The invention discloses a novel electromagnetic pump. A coil with appropriate parameters is arranged on an top circle of a pump body; a component consisting of a lower gland, a lower cover spring, a lower cover ball and a lower cover is correctly arranged at a lower port of the pump body; a component consisting of a piston gland, a spring, a piston ball and a piston is arranged in a hole in the middle of the pump body; and simultaneously, a piston spring is arranged in the upper part of the piston, and an upper cover is arranged at an upper opening of the pump body. All the components except the piston are made of a non-magnetic conduction material as much as possible. The novel electromagnetic pump has the advantages that: because electromagnetic force is adopted as the power of the electromagnetic pump, the pump is entirely small in volume, and simultaneously has a simple structure and is suitable for application in families, flowage, sampling and testing occasions, flow tests and other corresponding occasions.

A reciprocating electromagnetic pump comprising a coil wound about a bipolar or tripolar core, a diaphragm structure mechanically coupled to at least one arm with a magnet attached to one end of the arm and a controller electronically connected to the coil. The arm is vibrated under the influence of a periodic electromagnetic field to produce flow. The flow of current through the electromagnet is interrupted so that the magnets are impelled during either a vacuum or a pressure stroke, but are not impelled during the reciprocal stroke. A microprocessor houses the controller which analyzes amplitude and frequency components of a signal produced in the electromagnet coil during the reciprocal stroke to provide a pump flow rate, a pumping efficiency, a pumping load and a height of the fluid column into which the pump mechanism is operating. The controller employs automatic feedback such that an operating frequency is controlled to match a self-resonant frequency of the pump and a coil current is controlled to a minimum value required to provide the desired flow. The microprocessor further comprises a pulse generator and a solid state switch that interrupts current flow through a pump electromagnet.

Detection of end of stroke for an electromagnetic pump is performed using, for example, a calculated first flux derivative.

The invention discloses a liquid sodium metal thermohydraulic experimental loop system. The loop system comprises a sodium filling system, a loop body, a vacuum system, an argon system and a glove box, wherein the sodium filling system comprises a sodium fusion tank and a sodium filter; the loop body mainly comprises a sodium storage tank, a pump box, a main electromagnetic pump, an auxiliary electromagnetic pump, a preheater, a test section, a radiator, a calibration barrel and a cold trap; and the glove box mainly comprises a sodium sampling analysis device. By the system, sodium filling operation can be realized, liquid sodium metal heat transfer flow characteristics are analyzed, liquid sodium metal is purified on line, an electromagnetic flowmeter is calibrated, and multiple functions of sampling analysis, detection and the like of the liquid sodium metal are realized.

The invention discloses a vibration crushing type pill dropping machine which comprises a shell, a pill dropping system, a vibration crushing system and a cooling circulating system, wherein the pill dropping system, the vibration crushing system and the cooling circulating system are arranged in the shell, the pill dropping system comprises a liquid storage pot, the upper opening of the liquid storage pot is connected with a pneumatic pump through a pipeline provided with a first valve, and the lower opening of the liquid storage pot is connected with a dropper with a jet hole through a hose provided with a second valve; the vibration crushing system comprises a vibration generator connected with the upper end of the dropper through a connecting rod, and the vibration generator is connected with a driving power for controlling the vibration frequency and the amplitude of the vibration generator; the cooling circulating system comprises a condensing column, a filter, a condensing box, a cooling pump and an electromagnetic pump, wherein the filter, the condensing box, the cooling pump and the electromagnetic pump are arranged from top to bottom beside the condensing column; the upper opening of the condensing column is opposite to the dropper, and the bottom end of the condensing column is connected with the electromagnetic pump and a circulating pipe; and the outlet of the circulating pipe is opposite to the opening at the upper end of the filter. The vibration crushing type pill dropping machine can be used for preparing both dropping pills and micro pills efficiently, and the preparation condition of the pills are easy to control.

The invention discloses a liquid metal sodium boiling two-phase thermal-hydraulic test loop system and a test method thereof. The loop system is divided into three parts comprising a high temperature part, a low temperature part and an argon branch, wherein the low temperature part comprises a sodium storage tank, an electromagnetic pump, an electromagnetic flowmeter, a purification cold trap, four sodium valves and corresponding connecting pipelines; the low temperature part is made of 316L stainless steel; the high temperature part comprises a regeneration heater, a preheater, a test section, an upper expansion box and corresponding connecting pipelines; the high temperature part is made of Incoloy 800 and allows the operating temperature to reach 1,200 DEG C; and the argon branch comprises an argon bottle, an expansion pressure stabilizing box, a vacuum pump, three pressure gauges, ten vacuum diaphragm valves and corresponding connecting pipelines. The system is suitable for operating at high temperature, has a good sealing property and can realize analysis and research on the liquid metal sodium boiling two-phase heat exchange flow characteristic by adding different test sections and a data acquisition system.

An underwater launch system includes a launch tube frangibly sealed at its forward end. At launch time, pressure equalization means introduces water at depth pressure into the launch tube between its frangibly sealed ends. A rotary electromagnetic pump coupled to the launch tube receives water at depth and expels the water at a higher pressure. The higher pressure water is coupled to the aft end of the launch tube.

A system to extract heat from a high power density device and dissipate heat at a convenient distance. The system circulates liquid metal in a closed conduit using one or more electromagnetic pumps for carrying away the heat from high power density device and rejecting the heat at a heat sink located at a distance. The system may make use of a thermoelectric generator to power the electromagnetic pumps by utilizing the temperature difference between the inlet and outlet pipes of the heat sink. The system also provides networks of primary and secondary closed conduits having series and parallel arrangements of electromagnetic pumps for dissipating heat from multiple devices at a remotely located heat sink.

Electromagnetic pump with oscillating core, connected to a hydraulic device, to transfer a fluid into the hydraulic device. The pump includes a containing body, a tubular element of amagnetic material, a core of ferromagnetic material sliding coaxially to the tubular element, an electromagnetic unit arranged around the core and coaxial to the tubular element to generate an alternating magnetic field and cause the core to slide axially and alternately with respect to the tubular element. The tubular element includes, in one piece, a first part, projecting outside both the containing body and the electromagnetic unit and having an attachment configured to be selectively associated, directly or indirectly, with mating attachment elements of the hydraulic device, and a second part disposed inside both the containing body and the electromagnetic unit and having an axial cavity in which the core slides. The tubular element further includes, in one piece, a flange between the first part and the second part and configured to allow the direct mounting of the tubular element to the containing body and the electromagnetic unit.

The invention relates to metal smelting technology and particularly relates to a Al-Si-Cu-Mg cast aluminum alloy and a preparation method thereof. The cast aluminum alloy comprises 89.5-90.5wt% of aluminum (Al) and the balance of 6.5-7.5wt% of silicon (Si) and 0.02-0.04wt% of modificator strontium (Sr), wherein according to the alloy, the content of copper (Cu) is 1.5-2.5wt%, the content of magnesium (Mg) is 0.35-0.65wt% and 0.05-0.25wt% of zirconium (Zr) and 0.1-0. 5wt% of cadmium (Cd) are both added into the alloy. The preparation method comprises the steps of smelting, refining, carrying out modification treatment, adding 0.04wt% of Sr, standing for 40-60 minutes, carrying out low pressure casting by using an electromagnetic pump and carrying out T6 heat treatment on castings to obtain the corresponding castings. Since more accurate element content control values and reliable operation process parameters are provided by the scheme, the high-performance cast aluminum alloy, especially suitable for the automotive industry can be prepared based on the optimized configuration of trace elements in AlSi7Cu2Mg.

The invention relates to a solenoid-drive liquid metallic rheostat which is characterized by comprising a casing, paraffin, a copper wire, a communicating vessel, liquid metal and an electromagnetic pump. The casing is filled with the paraffin and the copper wire; the communicating vessel is located on one side of the casing and is connected with one end of the copper wire; the electromagnetic pump is mounted at the bottom of the communicating vessel; and the liquid metal is stored in the communicating vessel, moves up and down under the driving of the electromagnetic pump and is contacted with the copper wire at different height positions, so that the length of the copper wire placed in a circuit is hanged and the variable resistance effect is achieved. The solenoid-drive liquid metallic rheostat takes the copper wire as the main body, utilizes the electromagnetic pump to drive the liquid metal to move to adjust the copper wire resistance, and adopts the paraffin to absorb joule heat, so that the whole system is stable and reliable, small in size, light in weight and low in cost, and can be widely applied to the field of soft starting of motors.

The invention pertains to the technical field of medicine preparation and relates to a vibration-crushing micro-pill machine which comprises a liquid storage pot, a pill dripping system, a cooling circulation device, a micro-pill collecting machine and a control circuit, wherein the pill dripping system comprises a dropper, a jet hole, a vibration exciter and a gear pump. The dropper is connectedwith the vibration exciter by a rigid connecting rod. The lower part of the dropper is provided with one or more jet holes, the upper part of which is a liquid inlet and the lower part thereof is a nozzle. The dropper is connected with an electric valve at the lower part of the liquid storage pot by pipes on which the gear pump is arranged. The side wall of the dropper is provided with two insertion holes in which a heater and a temperature sensor respectively connected with the control circuit are arranged. The control circuit controls the make-and-break of the heater according to the detected temperature of the temperature sensor. The cooling circulation device comprises a condensation column, a stirring device, a filter, a cooling cylinder, a cooling pump and an electromagnetic pump. The vibration-crushing micro-pill machine has the advantages of chance of batch production of micro-pills, high production efficiency, simple equipment structure and convenient control.

The invention discloses a liquid metal electromagnetic pump which comprises a pump ditch, an electromagnetic drive unit, a control system and the like. The pump ditch of the electromagnetic pump vertically passes through the electromagnetic drive unit and can freely move out of the electromagnetic drive unit, thus bringing convenience for maintenance. Variable diameter shrinkage ports at the two ends of the pump ditch are welded with interfaces of peripheral equipment; a progressive wave magnetic field generated by a magnetic coil drives a high-temperature liquid metal medium to flow in the pump ditch, and the flow rate of the liquid metal is adjusted by changing the current intensity in the magnetic coil. An insulation layer between the magnetic coil and the pump ditch isolates the high-temperature radiation of the liquid metal, circulating cooling water is led into the hollow magnetic coil to reduce the temperature of the coil, and the comprehensive effect of the two causes the electromagnetic pump to be capable of working in the liquid metal environment with higher temperature. The liquid metal electromagnetic pump is applicable to the transmission and application of liquid metal with the characteristics of high working temperature, strong corrosiveness, easy oxidization, or large specific gravity and the like, and has the advantages of simple and convenient operation, high efficiency, long service life and the like.

A configuration for a drug delivery system which offers significant advantages over presently available systems. The system provides redundant protection against overdelivery of drug, increased accuracy of delivery, reduced energy requirement, increased capability to clear a blocked catheter, and alarms signifying catheter blockage or valve leakage. The system comprises the series combination of a reservoir, low power electromagnetic pump having spring-biased magnetically actuated piston / plunger and a check valve, pressure sensor, pressure regulator and a catheter. The reservoir supplies a drug at greater than ambient pressure, e.g. 18.7 psia or 4 psi above normal sea level ambient pressure. The pump increases the pressure by 3 psi to 21.7 psia. The pressure sensor tracks the pressure at this location and triggers suitable action by the pump. The pressure regulator downstream of the pressure sensor is configured to hold the pressure at the regulator inlet at a desired level such as 21.7 psia. The catheter at the regulator exit delivers fluid to the patient at a pressure which is normally close to that of the patient's environment.

A device for use by an individual for sexual pleasure varying in form, i.e. shape, during its use and allowing for the user to select multiple variations of form either discretely or in combination and for these dynamic variations to be controllable simultaneously and interchangeably while being transparent to the normal use of the device, including the ability to insert, withdraw, rotate, and actuate the variable features manually or remotely. According to embodiments of the invention localized and global variations of devices are implemented using fluidics and electromagnetic pumps / valves wherein a fluid is employed such that controlling the pressure of the fluid results in the movement of an element within the device or the expansion / contraction of an element within the device.

The invention relates to a welding process for a PCB (printed circuit board), and discloses a jet welding method, which includes the process steps of flux spraying, preheating and welding. The process step of welding adopts a jet welding process, which is characterized in that melted welding flux is sprayed out of two opposite elongated nozzles parallelly arranged on two sides of a welding groove by the aid of a mechanical pump or an electromagnetic pump, and forms two obliquely upward opposite parabolic liquid surfaces contacting with the surface of the PCB in a parabolic manner. The invention further discloses a jet welding groove using the jet welding method. The jet welding method and the jet welding groove have the advantages that automation of a through hole welding process and through hole welding quality can be effectively improved, electric power resources and tin resources are saved, and production cost can be reduced for electronic manufacturers.

A method of reducing or eliminating vibration in a linear reciprocating solenoid pump 10, the method comprising the steps of providing a solenoid pump 10 having a linear reciprocating plunger 14 and providing an electric circuit 48 to energize electro-motion means 16 of the solenoid pump 10, the electric circuit 48 energizing the electro-motion means 16 with an increased frequency of n times the frequency of normal mains electricity.

The invention discloses a liquid metal-cooled focus type solar energy thermionic generating set, which comprises a thermionic generating module, a sunlight concentrator positioned above the emitter electrode of the thermionic generating module, and a liquid metal radiator. The liquid metal radiator comprises a heat conducting plain film contacted with the low temperature end of the generating module directly, and an electromagnetic pump arranged in a channel in the a substrate of an electromagnetic pump, wherein the electromagnetic pump consists of a pair of permanent magnetic sheets flatly arranged on the upper and lower surfaces of the substrate of the electromagnetic pump and a pair of electrode plates arranged on the two opposite walls of the channel in the substrate of the electromagnetic pump; the planes of the pair of the electrode plates are vertical to the planes of the pair of the permanent magnetic sheets; lead wires of the electrode plates are electrically connected with aphotoelectric battery; and a hollow runner in the heat conducting plain films, the channel in the substrate of the electromagnetic bump and a hollow runner in the radiation substrate of a finned radiator which are communicated are filled with flowing liquid metal. The device is a self-sustained adaptive high-efficiency solar energy generating device without any moving component, and has the advantages of simple structure, high reliability, convenient maintenance, low noise, energy saving and cleanness.

The invention provides a portable high-sensitivity heavy metal detecting device based on a micro-fluidic chip. The device comprises a sample feeding unit, the micro-fluidic chip, a recycling unit, an absorption spectrum detecting unit and a control and data processing display unit. The sample feeding unit comprises a reagent storage device, a blank solution storage device, a sample storage device, a micro solenoid valve, a first micro electromagnetic pump and a second micro electromagnetic pump. The micro-fluidic chip comprises a first sample inlet, a second sample inlet, a detecting channel and a sample outlet. The recycling unit comprises a waste solution storage device. The absorption spectrum detecting unit comprises a light source, an optical resonator and a micro spectrograph. The control and data processing display unit comprises a control circuit and terminal equipment. According to the device, fast, real-time and in situ measurement can be achieved on heavy metal, and detecting sensitivity is high. The device is high in integration degree, small in size, light and convenient to carry and operate.

A piston is slidably provided in a cylinder and partitions a first pump chamber, and a second pump chamber connected to an object to be operated. A first on-off valve is provided between the first pump chamber and the outside. A second on-off valve is provided in a connecting flow passage that connects the first pump chamber and the second pump chamber to each other. When the piston is moved forward by an electromagnetic force of a solenoid portion, a capacity of the first pump chamber decreases, and a capacity of the second pump chamber increases. When the piston is moved backward by a biasing force of a spring, the capacity of the first pump chamber increases, and the capacity of the second pump chamber decreases. A pressure receiving area of the front face of the piston is larger than that of the back face thereof.

Variable inertia flywheels are used in power generation apparatus to quickly release stored kinetic energy to meet transient power load demands. Such flywheels typically vary inertia by using either interconnected multiple flywheels having different inertia or by mechanically moving a mass connected with the flywheel radially with respect to the axis of rotation. A variable inertia flywheel according to the present invention comprises a body and a number of fluid movement devices disposed at equal angular intervals about the rotational axis of the body. Each device comprises at least first and second chambers axially aligned in a substantially radial direction and adapted to contain an electrolytic fluid. The first and second chambers are interconnected by a channel that permits transfer of the fluid between the chambers. The movement of the fluid between the chambers is facilitated by an electromagnetic pump.

A device for use by an individual for sexual pleasure varying in form, i.e. shape, during its use and allowing for the user to select multiple variations of form either discretely or in combination and for these dynamic variations to be controllable simultaneously and interchangeably while being transparent to the normal use of the device, including the ability to insert, withdraw, rotate, and actuate the variable features manually or remotely. According to embodiments of the invention localized and global variations of devices are implemented using fluidics and electromagnetic pumps / valves wherein a fluid is employed such that controlling the pressure of the fluid results in the movement of an element within the device or the expansion / contraction of an element within the device.

The invention discloses an online calibrating device for high-temperature liquid metal flow. The top of a melting tank is respectively connected with a vacuum pump and a nitrogen gas steel cylinder through a pipeline; a gas space at the upper part of the liquid level on the side wall of the melting tank is connected with a gas space at the upper part of the liquid level of a liquid storage tank; the bottom of the liquid storage tank is connected with the melting tank through a pipeline; the pipeline extends to the bottom of the melting tank; the bottom of the liquid storage tank is higher than the liquid level height in the melting tank; a vacuum pump and a first pressure sensor are respectively connected to the top of the liquid storage tank through pipelines; a three-way valve is arranged at the bottom of the side wall of the liquid storage tank and is respectively connected with a second pressure sensor and a liquid metal flow meter through pipelines; the liquid metal flow meter is connected with an electromagnetic pump through a pipeline; two paths of pipelines are arranged at an outlet of the solenoid pump; one path of pipeline is connected with the gas space at the upper part of the melting tank; the other path of pipeline is communicated to a main experiment loop; and the first pressure sensor, the second pressure sensor and the liquid metal flow meter are respectively connected with a computer. The invention also discloses a method for online calibrating.

The invention provides an electromagnetic pump which comprises a stator assembly, a casing pump case assembly and screws. The casing pump case assembly is composed of a casing pipe, a casing pipe spring, a plug spring, a piston, a piston sealing ring, a plug, a check ring, a sleeve inner sealing ring, a sleeve, a sleeve outer sealing ring, a pump sealing ring, a one-way valve, a one-way valve spring and a pump case. The electromagnetic pump is characterized in that a protrusive boss is arranged on the bottom of a casing pipe inner cavity, another protrusive boss is arranged on the bottom of an inner cavity of the pump case, due to the fact that the casing pipe spring is positioned by the protrusive boss on the bottom of the casing pipe inner cavity, the one-way valve spring is positioned by another protrusive boss on the bottom of the pump case inner cavity, noise is reduced effectively, and the service life of the casing pipe spring and the service life of the one-way valve spring are prolonged. In addition, the electromagnetic pump is simple and reasonable in structure, low in noise and long in service life.

A power transmission configured with a mechanical pump that generates and deliver a fluid pressure to a clutch. An electromagnetic pump generates and delivers a fluid pressure to the clutch, and an accumulator connects the clutch and the electromagnetic pump, and accumulates fluid pressure acting there between. A switching valve selectively switches between connecting the mechanical pump side and the clutch in a fluid communicating manner and connecting the electromagnetic pump and the clutch in a fluid communicating manner. A valve drive portion that drives the switching valve so as to connect the mechanical pump side and the clutch when the mechanical pump is driving, and drives the switching valve so as to connect the electromagnetic pump and the clutch when the electromagnetic pump is driving in place of the mechanical pump.

A fluid cooling system and method of cooling an integrated circuit die are disclosed. The cooling system includes a number of electromagnetic elements disposed on a fluid path, as well as one or more flow elements disposed within the fluid path. A fluid is also disposed in the fluid path. Each electromagnetic element is capable of generating a magnetic field that can exert a force on a flow element, causing the flow element to move through the fluid path. The moving flow element may create a pressure head within the fluid contained in the fluid path, causing the fluid to move. The moving fluid can transfer heat from a first heat exchanger to a second heat exchanger. Other embodiments are described and claimed.

A power supply circuit for an electromagnetic pump includes a switched secondary loop circuit to provide the electromagnetic pump with a low voltage, high current output. In some embodiments, the power supply circuit includes a transformer having a core, a primary coil having first and second terminals, and at least a first secondary coil having first and second terminals, and a first switch device coupled between the first terminal of the first secondary coil and a first output node, and further includes primary-side circuitry for operably impressing a periodic signal across the primary coil. The first switch device includes a control terminal coupled to a node of the primary-side circuitry. The first output node and a second output node are provided for coupling thereto the electromagnetic pump, and the second output node may be coupled to the second terminal of the first secondary coil.

A control system for controlling electromagnetic pumps, such as electromagnetic driven membrane pumps, has at least one microprocessor and at least one sensor, the microprocessor controlling the power supply to at least one electromagnet whose changes in emitted magnetic field causes at least one moving part, directly or indirectly, to perform an oscillating pumping movement. The control system has at least one positioning sensor which senses the moving part's position in the electromagnetic driven pump. By use of the positioning sensor's measurements, the pump can be controlled with great accuracy. A method for controlling electromagnetic pumps is also provided.

The invention discloses a technology of processing a magnesium alloy with high intensity and flexibility, which subsequently includes vacuum melting, continuous casting, extrusion, forging and such procedures. The invention reasonably matches the solution body composition and the metamorphism liquid during casting process, and the grains are refined through the chilling action of a crystallizer at first; the magnesium alloy liquid is transmitted by an electromagnetic pump so as to prevent secondary oxidation and ensure safety in casting of the magnesium alloy; and then further refining the grains through electromagnetic mixing power, large ratio extrusion and heat treatment secondary crystallization, which effectively ensures tiny enough isometric crystals can be obtained from the alloy microstructure. The magnesium alloy elements of the automotive steering control arms, support elements of motorcycles and bicycles, can be obtained for the first time by the improvement, which are fully filled, good in surface quality, fine and even in grain size, reasonable in streamline distribution and without disordered streamline, vortexing and draining phenomena. The invention combines a plurality of technological processes into a production cycle, which reduces the turnover links, saves energy and reduces cost.