71results about How to "Increase output flow" patented technology

The invention relates to a series-parallel hybrid-driven piezoelectric pump, and belongs to the fields of fluid transmission and control. Upper and lower pump bodies are connected through screws; 2 to 20 piezoelectric vibrators are connected between pump cavities of the two pump bodies in a pressed mode; valve sheets are adhered to the pump cavities of the upper and lower pump bodies and the inlets of valve cavities; the inlet of the upper pump body and the adjacent pump cavity, two adjacent pump cavities, and the valve cavities and the adjacent pump cavities are communicated through inter-cavity flow channels; the valve cavities are communicated with outlets; a series pump I is formed by the pump cavities and the piezoelectric vibrators; the inlet of the lower pump body and the adjacent pump cavity, two adjacent pump cavities, and the valve cavities and the adjacent pump cavities are communicated through inter-cavity flow channels; a series pump II is formed by the pump cavities and the piezoelectric vibrators; the inlets of the series pumps I and II are communicated; and the valve cavities of the series pumps I and II are communicated and communicated with the outlet on the upper valve body. The pump has the advantages that a series-parallel pump is formed by a plurality of piezoelectric vibrators of which the two sides drive fluid simultaneously, so that the pump is high in flow, pressure and energy efficiency, low in pulsation and suitable for constructing a piezoelectric hydraulic driver with high system back pressure.

The invention provides a redundancy electro hydraulic servo system, which is an electro hydraulic servo system controlled by a dual-flux servo valve or a dual-servo proportion valve. By a two-position two-way electromagnetic valve, a controllable parallel connection between the two valves is realized, the dynamic adjustment of the control scheme is realized, and the realization of the load motion speed and index is achieved, thus achieving the objects of high efficiency and energy-saving control and simultaneously improving the reliability of the system.

The invention relates to a linear motor-driven plunger pump. The mechanical part of the plunger pump comprises a cylinder body I, a cylinder body II, flow distribution valves, an in-sucking communication pipe, out-pressing communication pipes, compacting flanges, plunger rods, linear motor stators, linear motor rotors and guide rails; and the electric part mainly consists of linear motors, a controller, drivers and a position feedback device. The linear motor-driven plunger pump is characterized in that a group of coil-type stators drive a permanent magnet rotor in a combinational way, thus realizing high thrust output of the linear motors. Each flat-type linear motor drives two plungers at the two ends of one plunger rod, and while the double-action plunger rod reciprocates, one end of the double-action plunger rod sucks water and at the same time the other end of the double-action plunger rod presses water. The two cylinders realizes the effective communication between the water sucking loop and water pressing loop of the plunger pump by means of the in-sucking communication pipe and the two out-pressing communication pipes. Each plunger hole is communicated with a flow distribution valve consisting of an in-sucking valve and an out-pressing valve. The electric part controls the out-of-phase movement of the linear motors, thus ensuring the stable combinational flow output of the pump. The linear motor-driven plunger pump disclosed by the invention has the advantages of less mechanical transmission links and high system efficiency and reliability.

A solenoid control valve for use in actuation of a manual hydraulic clutch in a vehicle. The solenoid control valve has an electronically operated solenoid with armature and actuator rod displaced through a channel in the solenoid. A spool valve has a valve body that is coupled at one end to the solenoid. A spool is slidably disposed in the control channel. A first and second dampener chambers are located at the two ends of the spool. The dampeners function to improve the stability in the control system and balance the transient flow forces of the hydraulic fluid as it moves through the valve member. The spool also has a control portion is located between the first end and the second end of the spool. The control portion allows the control portion to communicate with a supply, control and exhaust passages in the valve body.

The invention discloses an electro-hydraulic multiple-way directional valve, wherein an oil inlet valve plate comprises an oil inlet valve body and a safety valve; an oil inlet P is arranged on the oil inlet valve body, a main oil channel, a working oil channel and a first oil channel are arranged in the oil inlet valve body, the main oil channel is communicated with the oil inlet P, and both of the working oil channel and the first oil channel are communicated with the main oil channel; the first oil channel is connected with a pilot oil channel, the pilot oil channel comprises a main pilot oil channel, a first pilot oil channel and a second pilot oil channel, and a pressure reducing valve is arranged at the junction of the main pilot oil channel and the first pilot oil channel; and a slide valve is arranged in the working oil channel, and the working oil channel is connected with an oil return channel via a safety valve. Additionally, directional valve plates are further provided with manual pull rods, flow collecting valves are arranged among the directional valve plates, and a throttling screw plug is arranged in the oil return channel of a pilot control oil channel. The electro-hydraulic multiple-way directional valve disclosed by the invention has the advantages of being capable of omitting a pilot pump and an oil tube, integrated in manual function and hydraulic control function, capable of changing the output flow of a working oil port via flow collection, slow in directional action, etc.

The invention provides a ventilation treatment device and a control method. The device comprises a device body, a breathing tube and a patient interface, and the device body further comprises a signalacquisition module configured to acquire an output pressure value of a signal collection point of the device body, a target signal obtaining module for obtaining a target pressure value for a patientinterface end, a calculating module for calculating an actual pressure value of the patient interface end according to the pressure value and the flow value of the signal collection point and a firstcontrol module for adjusting output flow of the device body according to the actual pressure value and a target pressure value. The method determines the actual pressure value of the patient interface by feedback of the output parameter of the signal collection point in the device body, determines the breathing state of the patient according to the comparison between the actual pressure value andthe target pressure value, and outputs the airflow corresponding to a threshold value, so that the air pressure of the received airflow by the patient reaches an expected target pressure value rangeto achieve the therapeutic effect.

The present invention relates to a new type of plunger pump, which includes a driving device, a pump body, a power actuator assembly, and a power transmission assembly; the power actuator assembly includes a guide rod, a chute, and a swing plate that reciprocate in the pump body; The chute is fixedly mounted on one end of the guide rod protruding from the pump body, and the inner side of the chute has two parallel and opposite working planes, the working planes are perpendicular to the guide rod; The power transmission assembly includes an active non-circular gear and a passive non-circular gear meshing with each other, the passive non-circular gear is in transmission connection with the oscillating plate, the active non-circular gear is connected with the driving device, and is driven by the driving device its spinning. The plunger pump can realize the transmission of the sinusoidal mechanism, the pressure angle can be realized by the rotation of the chute and the oscillating disk, and the non-circular gear can realize the smooth movement speed of the guide rod. The equipment is driven by non-circular gears, which can greatly overcome many shortcomings of the cam mechanism, and has a long service life and is not easy to wear.

The invention relates to a piezoelectric vibrator bilateral fluid driven series connection pump and belongs to the fields of fluid transmission and control. An upper pump body and a lower pump body are connected through a screw, 2-20 piezoelectric vibrators are connected between pump cavities of the two pump bodies in a pressed mode, and valve blocks are pasted at the position of inlets of the pump cavities and an inlet of a valve cavity of the lower pump body. An external inlet of the upper pump body is communicated with adjacent pump cavities, two adjacent pump cavities are communicated through an inter-cavity runner to be connected with the are communicated through an inter-cavity runner to be connected with the piezoelectric vibrators to form a series connection pump I, and an internal outlet and the adjacent pump cavities are communicated through an inter-cavity runner to be connected with the piezoelectric vibrators to form the series connection pump I. an internal inlet of the lower pump body and the adjacent pump cavities are communicated through an inter-cavity runner to be connected with the piezoelectric vibrators to form a series connection pump II, the two the adjacent pump cavities are communicated through an inter-cavity runner to be connected with the piezoelectric vibrators to form the series connection pump II, and a valve cavity and the adjacent pump cavities are communicated through an inter-cavity runner to be connected with the piezoelectric vibrators to form the series connection pump II. An internal outlet of the series connection pump I and the internal inlet of the series connection pump II are communicated, the valve cavity of the series connection pump II is communicated with the external outlet on the upper pump body. The piezoelectric vibrator bilateral fluid driven series connection pump has the advantages that the plurality of the piezoelectric vibrators with two sides driving the fluid simultaneously form series connection piezoelectric pumps, flow quantity is big, pressure and energy efficiency are high, and the piezoelectric vibrator bilateral fluid driven series connection pump is applicable to construction of piezoelectric hydraulic driving with high system backpressure.

The invention discloses a plunger water pump. The plunger water pump provided by the invention comprises two plunger groups which are composed of water cylinders and oil cylinders, a water cylinder piston and an oil cylinder piston of each plunger group are synchronously displaced, a water gap of each water cylinder barrel is provided with a water inlet one-way valve which is in one-way conduction with a cylinder tube cavity from the outside and a water outlet one-way valve which is in one-way conduction with the cylinder tube cavity from the cylinder tube cavity to the outside; and two oil cylinders are alternately stretched under the control of a control valve. The plunger water pump provided by the invention breaks through a traditional water pump structural principle, two oil cylinders are adopted to alternately move and retreat, thereby driving two water cylinders pistons to alternately move, and further the switch of two working conditions is respectively realized; compared with the prior art, the plunger water pump is capable of effectively improving the output flow and the water utilization pressure on the basis of the continuous no-interval foundation; and the invention also provides a liquid control system of the plunger water pump.

A valveless piezoelectric pump for a double-cantilever oscillator comprises an upper pump body, a lower pump body, an upper piezoelectric oscillator body, a lower piezoelectric oscillator body, a pressing spring, a conical inlet, a conical outlet and a sealing ring. The valveless piezoelectric pump is characterized in that the left end of the upper piezoelectric oscillator body is integrally connected with the left end of the lower piezoelectric oscillator body to be in a v shape, the right end of the upper piezoelectric oscillator body is fixed to the upper pump body, and the right end of the lower piezoelectric oscillator body is pressed by the pressing spring. When the piezoelectric pump is in a non-work state, the lower piezoelectric oscillator body is completely in contact with the bearing plane of the lower pump body.

The invention relates to a supercharger with controllable hydraulic pressure and flow output, wherein a twin-charger high-pressure fluid output structure is adopted, and the diameter and the stroke of a piston and a plunger of each charger are increased so as to meet a work pressure output requirement and simultaneously improve output flow, which is 10 times that of the traditional supercharger. A phase different between the operation cycles of the pistons of the two chargers is 180 degrees, the output high-pressure fluid enters a valve seat (1), and a waterway channel in the valve seat (1) is designed in a bridge type loop structure which ensures that the output high-pressure fluid is stable and balanced in flow. A displacement transducer control technology is introduced to meet an automation requirement of a water pressure test-tube engine test, and the work efficiency and the safety performance of a detection test on an oil transferring pipeline are greatly improved.

The invention discloses an internally-engaged gear pump applicable to high pressure and large flow. The internally-engaged gear pump is composed of a pump shell, a first double-tooth ring, a second double-tooth ring, a first gear shaft, a second gear shaft, a radial compensation device, a sliding bearing, a side plate and the like, wherein the first double-tooth ring and the second double-tooth ring are symmetrically arranged in the pump body, and outer teeth of the first double-tooth ring and the second double-tooth ring are engaged to form a first gear pair; the first gear shaft and the first double-tooth ring are engaged to form a second gear pair; and the second gear shaft and the second double-tooth ring are engaged to form a third gear pair. A single input shaft is used for driving the gear pairs to rotate by grades and the distribution of moment on the shaft is reasonable; and the radial unbalance force on each grade of gear pair is small and the anti-pressure ability of the pump under a high pressure working condition is improved. Oil in the pump is pressurized by the plurality of grades of gear pairs so that the output pressure and the flow of the oil are effectively improved; and meanwhile, the two paths of oil on the outlet of the pump are overlapped so that the flow and the pressure pulse of the pump are remarkably reduced and the requirements of a high-precision hydraulic system can be met.

The invention discloses a piezoelectric pump with a novel semi-active valve. An auxiliary oil circuit is added into the traditional oil circuit to guide the discharged high pressure oil into the auxiliary oil circuit and jack an elastic film so as to achieve the auxiliary opening of an oil inlet one-way valve. According to the piezoelectric pump with the novel semi-active valve, the auxiliary opening of the one-way valve is achieved and the high pressure oil can be isolated from the low pressure oil so as to prevent the high pressure oil from entering a low pressure oil chamber due to the elastic film and the symmetrical double-pump structure design is adopted and accordingly the structure is simplified, the work is consistent, the working frequency is increased, and the flow of the hydraulic oil is increased.

The invention provides a foam metal composite sand prevention structure and a liquid extracting pipe. The foam metal composite sand prevention structure is sleeved outside a basic pipe and at least comprises a foam metal sand prevention layer made of foam metal. The liquid extracting pipe comprises the basic pipe and the foam metal composite sand prevention structure which is sleeved outside the basic pipe. The sand prevention structure has the sand prevention effect of a gravel filling process, the structural strength of a wire-wound metal mesh, high sand tolerance capacity, low overflow resistance, and a good prevention effect on sand grains with the grain size of more than 60mu m; and when the sand prevention structure is matched with a well cleaning process, a pipe column is not required to be moved for well cleaning, so that the sand prevention effect is further enhanced.

The invention relates to a safety monitoring system and method for a small fuel gas storage tank and an intelligent terminal. The safety monitoring system comprises a liquid level monitoring device arranged on the fuel gas storage tank, a cloud server and a control terminal. The liquid level monitoring device is used for monitoring the liquid level of liquid fuel gas in the fuel gas storage tank and generating liquid level information; the cloud server is connected with the liquid level monitoring device and used for sending the liquid level information to the control terminal; and the controlterminal is connected with a tank car in the designated area and used for generating a scheduling instruction according to the liquid level information and sending the scheduling instruction to the designated tank car. The safety monitoring system has the effect of reducing the workload of workers so as to improve the maintenance efficiency.

A transverse fan assembly that includes a fan rotatably disposed in an air plenum for drawing air through an inlet opening and drivingly forcing air from an outlet opening defined by the air plenum, the inlet opening having an elongate, bladed, inlet rotor oriented on a rotational axis parallel to the fan, extending the length of the fan, and positioned proximate to the fan periphery to increase air flow and improve air flow distribution from the outlet of the air plenum along the length of the fan while generating less noise.

The invention discloses a fire extinguishing system, comprising a fire extinguishing medium pot and a plunger pump for pumping the fire extinguishing medium. The plunger pump comprises two plunger groups consisting of a medium cylinder and an oil cylinder; a medium cylinder piston and an oil cylinder piston of each plunger group conduct synchronous displacement; and a flow passage port of a cylinder barrel of each medium cylinder is communicatively provided with an unidirectional conductive inflow non return valve from outside to a cavity of the cylinder barrel and an unidirectional conductive outflow non return valve from the cavity of the cylinder barrel to an external outlet; the inflow non return valve communicates with the fire extinguishing medium pot; the two oil cylinders are configured in a way of alternative telescoping by controlling of a control valve. The plunger pump of the present invention employs two oil cylinders for alternative advancing and recession to drive alternative movements of the two medium cylinder pistons, so as to realize switching between two working states respectively. Compared with a prior art, the fire extinguishing system of the invention can effectively increase an output flow and water usage pressure on the premise of continuous non-intermittent water supply. Based on the fire extinguishing system, the invention also provides a fire engine containing the fire extinguishing system.