33results about How to "No pulse" patented technology

The invention relates to a vacuum screw-rod conveying pump which comprises a feed cavity and a discharge cavity, wherein the feed cavity and the discharge cavity are mutually communicated; a feed inlet is arranged above the feed cavity, and an end of the discharge cavity is provided with a discharge outlet; the other side (opposite to the discharge cavity) of the feed cavity is communicated with a vacuum cavity, the vacuum cavity is provided with an air release valve, a screw rod driven by a motor sequentially passes through the vacuum cavity and the feed cavity, and the screw rod is provided with a spiral body. In the vacuum screw-rod conveying pump provided by the invention, through utilizing the motion mode of the screw rod and setting the vacuum cavity on one side of the feed cavity, the removal of air in materials is facilitated; and because the spiral thrusting force offsets a vacuum attractive force, materials are uneasy to enter into the vacuum cavity, and only air is pumped out. The vacuum screw-rod conveying pump can be used for conveying various materials, and therefore, the vacuum screw-rod conveying pump is wide in viscosity range, large in output volume, stable in conveying and high in operating efficiency.

The invention discloses a ladle bottom blowing power injection device with a whirlwind-type flow-smoothing gas storage chamber, and belongs to the technical field of steel smelting. The ladle bottom blowing power injection device with a whirlwind-type flow-smoothing gas storage chamber comprises a slit-type powder injection component I and the whirlwind-type flow-smoothing gas storage chamber II.A fire-resistant material is filled into the slit-type powder injection component. Multiple slits are distributed uniformly in the fire-resistant material. A middle axle plane which passes through ends which belong to the slits and are close to an axle center, and a vertical plane where the slits are arranged form an included angle gamma. The bottom of the whirlwind-type flow-smoothing gas storage chamber is connected with a whirlwind-type accelerating chamber. A low end of the whirlwind-type accelerating chamber is provided with a whirlwind-type gas flow conveying pipes. The whirlwind-type gas flow conveying pipes are arranged at both sides of a power-gas flow conveying pipe and form respectively beta angles with the power-gas flow conveying pipe. The ladle bottom blowing power injectiondevice with the whirlwind-type flow-smoothing gas storage chamber can reduce obviously a degree of powder-gas flow pulsation, accumulation of falling powder, and resistance to a powder-gas flow when the powder-gas flow is fed into the slits, can improve obviously a uniform flow conveying rate of the powder-gas flow in the slits. The ladle bottom blowing power injection device with the whirlwind-type flow-smoothing gas storage chamber has the advantages of stable blowing, small pulsation, low corrosion on fire-resistant materials, safe and reliable characteristics, feasibility for continuous and stable blowing and long service life of fire-resistant materials.

The invention relates to a Stirling engine with an eccentric shaft rolling rotation ring, the Stirling engine is characterized in that a cylindrical air cylinder is divided four spaces, namely two inner space and two outer through the eccentric shaft rotation ring, an inner slip sheet and an outer slip sheet, the volumes of the inner spaces and the volumes of the outer spaces periodically change, the outer paces are cold cavities, an outer shell is a radiator, the inner spaces are hot cavities, simultaneously, a heater is arranged in an inner shell, a working medium gas is high-pressure carbon dioxide, heat expansion and cold contraction of the working medium gas are respectively and simultaneously carried out in the hot cavities and the cold cavities which have periodically-changed volumes, the working medium gas is heated in the heater in the inner shell, and sequentially is subject to inflation in the hot cavity C, deflation in the hot cavity D, inflation in the cold cavity B, and deflation in the cold cavity A, and due to the pressure difference between the hot cavity C and the hot cavity D and the pressure difference between the cold cavity A and the cold cavity B, the eccentric shaft rotation ring is driven to clockwise rotate to work. Thus, in the Stirling engine, the system has a simple and compact structure; as the heat expansion and the cold contraction of the working medium gas are simultaneously carried out, and the working medium gas always flows towards the same direction, the engine has good movement stability without pulsation; compared with a piston type external combustion engine, the system heat efficiency is improved; the working medium gas adopts the high-pressure carbon dioxide which has good flowability and can absorb heat in a subcritical zone and discharge heat in a supercritical zone, so that the working medium gas has a good heat-transfer characteristic, the cost is low, and the environmental-friendly effect is achieved.

A new type of magnetic gear pump, the invention relates to a pump, in particular to a pump for conveying various chemical media or oil or water or toxic, harmful or flammable and explosive liquids, with corrosion resistance, acid and alkali resistance, high temperature and high pressure resistance, A new type of magnetic gear pump with zero leakage and no pulsation with magnetic drive. The magnetic gear pump provided by the present invention solves the deficiencies of the current technology by innovatively designing the structure, improving the processing technology and rationally selecting metal and non-metal composite materials, thereby ensuring that the pump can meet the working conditions of high temperature, high pressure and various viscosities. Harmful, volatile, easy to corrode, easy to crystallize and various harsh chemical media for efficient transportation; and the design uses magnetic drive to connect the drive of the pump and the motor, which truly achieves zero leakage and no pulsation, and solves the problem of existing shaft seal leakage , eliminates the radial load caused by misalignment, plays an overload protection role, and meets a wide range of applications in various industries such as petroleum, chemical, pharmaceutical, food, tobacco, paper and laboratories.

A universal toothed chain type stepless speed change transmission device is mainly composed of a left cone disc, a right cone disc and a transmission disc. The universal toothed chain type stepless speed change transmission device is technically characterized in that according to an existing toothed chain type stepless speed changer, radial concave teeth and radial convex teeth on a left cone disc and a right cone disc of a driving wheel and a driven wheel are changed into radial peak valley-shaped teeth; a chain pin is changed to move inside a chain pin sleeve in the axial direction; the two ends of the chain pin are designed to be two-faced inclined conical teeth in the front-back direction; during transmission, the inclined conical teeth at one end are subjected to axial thrust between the peak valley-shaped teeth of the left cone disc or the right cone disc, and the chain pin moves in the axial direction, so that the two-faced inclined conical teeth at the other end of the chain pin are inserted into the valley-shaped portions of the opposite conical disc, and a peak-insertion valley-pin mode is formed. According to the universal toothed chain type stepless speed change transmission device, pure-inclined teeth mesh transmission is achieved, the noise is low, pulsation and slipping are avoided, and the speed ratio torque is quite large.

The invention discloses a gear pair of a stable non-pulse gear pump and a machining technology of a gear pair die cavity. The gear pair is applied to a high-precision precise micro gear pump and comprises a drive gear and a driven gear which are engaged. The drive gear and the driven gear have the following parameters that the tooth number ranges from 10 to 18, the normal modulus ranges from 1 mnto 20 mn, the normal pressure angle is 20 degrees, the tooth top height coefficient is 0.8, the tooth root height coefficient is 1.26, the engagement angle is 29.531, and the tooth profile coincidencedegree is 1.024. Due to the fact that gear molded line parameters are further optimized, the gear coincidence degree is high after optimization, the friction coefficient is reduced, the service lifeof the gears is prolonged, and the gear pump has the beneficial effects that media conveyed out are stable, free of pulses and high in continuity; and a novel surface treatment technology is adopted for manufacturing a gear cavity, the manufacturing precision, density and saturation of the gears are improved, the gear torque is improved, friction force is reduced when the gears are engaged, meanwhile, stability and production efficiency of the product are improved, and the service life of a die is greatly prolonged.

The invention discloses a single-screw boosting water injection pump which is characterized in that the lower part of a four-way joint is connected with the upper part of a sleeve pipe; a suspender is arranged on the upper end hole of the four-way joint; the part of contact between the suspender and the four-way joint is kept sealed; a stator of a single-screw pump is connected to the lower part of the suspender and arranged in the sleeve pipe; a sleeve pipe valve is mounted on the side opening of the four-way joint; a tee joint is mounted on the upper end surface of the four-way joint; a water inlet valve is mounted on the side opening of the tee joint; a mechanical seal device is mounted in the upper part of the tee joint; a rotary power device is mounted at the upper end of the tee joint; a central shaft of the rotary power device penetrates through the mechanical seal device to be connected with a rotor of the single-screw pump and can drive the rotor of the single-screw pump to rotate. The single-screw boosting water injection pump is stable in running, free of pulsation, low in fault rate, reliable to seal and long in service life; the water injection amount can be increased and the water injection cycle can be prolonged; the single-screw boosting water injection pump is mounted in a well with boosting water injection requirements, does not take up ground space and has remarkable economic benefits.

The invention discloses a cantilever type double-screw water-jet propulsion pump. Besides the components of a common double-screw pump, the cantilever type double-screw water-jet propulsion pump comprises a water inlet, a double-bearing structure for balancing an axial force and a radial force, a double-screw structure and a jet nozzle, wherein a tooth type curve of the double-screw structure is an involute. According to the cantilever type double-screw water-jet propulsion pump, screws are rotated to push water flow, and a carrier in water is pushed forward by a reaction force of high-speed water flow jetted from the cantilever type double-screw water-jet propulsion pump. A cantilever type structure is simple and efficient, and can reduce hydraulic loss fully and generate sufficient thrust to improve the propulsion capability of the carrier in water. The double-screw structure has the characteristics of no stir, no pulsation, smooth output of various media, small mechanical vibration, low noise and the like. Since a pump body structure ensures that a pumping liquid always exists as a sealing liquid in a working element of the pump, the cantilever type double-screw water-jet propulsion pump has high self-suction capacity and is commonly used for multi-phase mixed transportation. For example, the cantilever type double-screw water-jet propulsion pump can be used for transporting oils, water, paste, milk-like substances, pitch and other chemical media.

The invention discloses a device for separating peripheral blood mononuclear cells, which comprises a test tube rack and a control box, wherein a cantilever for suspending a blood bag, an injection pump and a transparent container with scales are arranged above the control box; a piston and a piston rod are arranged in the transparent container; one end of the piston rod, which penetrates out of the transparent container, is connected with the injection pump; the other end is provided with two connecting ducts which are respectively connected with the blood bag and a diversion tube; the two connecting ducts are respectively provided with a one-way valve; a control box built-in power source and a controller are connected with the injection pump; the injection pump pulls the piston rod through a tumbler switch on the control box panel so as to extract blood into the transparent container, or pushes the piston rod to extrude the blood in the transparent container; the test tube rack is provided with at least one row of test tube plug holes, into which a plurality of test tubes are inserted in a 45-degree inclined mode; the diversion tube is arranged above the 45-degree inclined test tubes, and extends a dropping tube for each test tube hole; and each dropping tube is provided with a control valve.

The invention belongs to lubrication technical field, concretely relates to a lubricating pump. The lubricating pump includes an internal rotor and an external rotor which are in cycloid type gear engage engagement with each other, gears of the internal rotor and the external rotor are engaged with each other for sucking and supplying oil. The lubricating pump of the present invention adopts a machine-pump integrated structure, has characteristics of built-in integration and without outer leakage, heat generated when the lubricating pump is working is brought by the lubricating fluid, so thatstable and safe operation of whole system is guaranteed, the present invention reduces middle transmission link, realizes synchronous operation of the lubricating pump and lubricated mechanism or device, not only increases working efficiency of the lubricating pump, but also increases work life of the lubricating pump.

A horizontal central-open multistage pump capable of conveying multiphase flow media comprises a pump body, a pump cover, a pump spindle, a transition runner composed of a pump body and a pump cover, a water suction chamber, an impeller of a special structure and the like. No real blade is arranged between a driving impeller cover plate and a driven impeller cover plate, waves of special types are peripherally processed to be positioned between the driving impeller cover plate and the driven impeller cover plate, the waves are sine waves or cosine waves, and the driving impeller cover plate and the driven impeller cover plate are connected through connection arms. The horizontal central-open multistage pump is applied to long distance transporting multiphase flow medium places containing high viscosity media, media carrying a lot of gas, media containing high concentration solid phase particles, and media sensitive to shear force and the like and has the advantages of being anti-cavitation, abrasion-resistant, efficient, reliable, convenient to dismount, small in loss of water power, little in installation error and the like.

The invention discloses a permanent magnetism type single-phase switched reluctance motor. The permanent magnetism type single-phase switched reluctance motor comprise a motor output shaft, a control system and at least one set of armature device; the armature device comprises a stator and a rotor; air gaps are located between the salient poles of the stator and the rotor; the rotor fixedly sleeves the outer periphery of a motor output shaft; the number of the salient poles on the stator is consistent with the number of the salient poles on the rotor; stator electromagnetic windings are installed at the salient poles of the stator; the winding directions of adjacent stator electromagnetic windings are different; permanent magnets are embedded in the salient poles of the rotor; the magnetizing direction of the permanent magnets is radial; and the polarities of the permanent magnets embedded in adjacent salient poles of the rotor are different. The permanent magnetism type single-phase switched reluctance motor of the invention has the advantages of a conventional switched reluctance motor, and can eliminate the torque ripples of the conventional switched reluctance motor, realize bidirectional operation and improve the conversion efficiency of power source input energy. The power density of the motor can be improved. With the motor of the invention adopted, the purpose of energy conservation can be realized effectively.

The invention provides an oil pressure coating device belonging to the spray paint industry device field. An upper part of a main machine box door has a power cable acceptation area. A hydraulic device is arranged at the lower part in the main machine box and has an oil box. A motor and a piston pump are fixed on the oil box and connected to the oil box. An air entry and an observation window are mounted on the top of the front face in the main machine. A pressure-resistant anti-explosion type brake disc is mounted after the observation window. A fixing table is arranged at a middle part of the left of the main machine for fixing an oil pressure cylinder of the coating device and a coating pump part. A coating hose housing area is mounted at the right of the main machine. A vent is mounted on the main machine under the coating hose housing area. A movable device at the bottom of the main machine includes a small wheel, an automatic barker and a rubber wheel. The oil pressure coating device can realize the simultaneous work of one machine and two sprayers, reduce work field, improve the work efficient, shorten construction period and saves the electricity by 39%, work at a high pressure with superior stability, ensure the uniform coating, have high efficiency, lower noise and dust storm without using diluent or pulsation, and can not cause the vibration barrier such as acknowledged joint hurt and neurodynia.

The invention discloses a cantilever type double-screw water-jet propulsion pump. Besides the components of a common double-screw pump, the cantilever type double-screw water-jet propulsion pump comprises a water inlet, a double-bearing structure for balancing an axial force and a radial force, a double-screw structure and a jet nozzle, wherein a tooth type curve of the double-screw structure is an involute. According to the cantilever type double-screw water-jet propulsion pump, screws are rotated to push water flow, and a carrier in water is pushed forward by a reaction force of high-speed water flow jetted from the cantilever type double-screw water-jet propulsion pump. A cantilever type structure is simple and efficient, and can reduce hydraulic loss fully and generate sufficient thrust to improve the propulsion capability of the carrier in water. The double-screw structure has the characteristics of no stir, no pulsation, smooth output of various media, small mechanical vibration, low noise and the like. Since a pump body structure ensures that a pumping liquid always exists as a sealing liquid in a working element of the pump, the cantilever type double-screw water-jet propulsion pump has high self-suction capacity and is commonly used for multi-phase mixed transportation. For example, the cantilever type double-screw water-jet propulsion pump can be used for transporting oils, water, paste, milk-like substances, pitch and other chemical media.

The invention discloses a precision control method and a precision control device for adding micro-liquid. The precision control device comprises an ARM9 processor, a color LCD display touch screen, an Ethernet interface circuit, a high-precision speed regulation circuit, a speed monitoring circuit, a flow detection circuit, a liquid level monitoring circuit, an alarm circuit, an SD card interface circuit, a USB interface circuit, a PWMDAC circuit, an SDRAM memory circuit, a program memory circuit flash, and a motor control interface circuit, wherein the circuits are mutually connected and the precision control for adding the micro-liquid addition is realized by software programming. By using the rate tracking technology to timely change the needed liquid flow, the precision control method and the precision control device for adding the micro-liquid realize the accurate control of micro-liquid addition in the production process, achieve the control precision of 1 percent, and have thefunctions of local automatic alarm and remote automatic alarm under the abnormal condition. The precision control method and the precision control device have convenient control parameter input, and can be organically integrated with the conventional production equipment to greatly improve the production efficiency and save the production cost.