60results about How to "Speed up closing" patented technology

The invention discloses a high-performance driving device used for a fuel injector electromagnetic valve. The driving device is composed of a storage battery power source, a DC / DC booster circuit, a digital signal processor, a PWM driver, power switch tubes and a current detection module. The storage battery power source is connected with the DC / DC booster circuit, the digital signal processor is connected with the PWM driver and the current detection module, the PWM driver is connected with the DC / DC booster circuit and the power switch tubes, and the power switch tubes are connected with the storage battery power source, the DC / DC booster circuit, the current detection module and the fuel injector electromagnetic valve. A high-end double-voltage time-sharing power supply technology and a low-end current feedback PWM control technology are adopted, in this way, the opening and closing speed of the electromagnetic valve is remarkably increased, energy consumption is greatly reduced, and fuel injection precision is improved.

A pair of welding tongs includes two moveable tong arms, with each tong arm including a first arm element with an electrode, a second arm element, and a connecting element disposed between the first and second arm elements, whereby the connecting elements of the tong arms can rotate about a common fixed reference point. An articulated lever is connected to the second arm element. The pair of welding tongs further includes a mechanical coupling to link the articulated levers of the tong arms, and a drive unit for driving the mechanical coupling. The motion of the mechanical coupling is transmitted to each tong arm of the welding tongs.

The invention discloses a drain valve which comprises a motor, a cam, a connecting rod and a water valve. The cam is arranged on an output shaft of the motor, and a connecting rod shaft is arranged on the cam; one end of the connecting rod is arranged on the connecting rod shaft, and the other end of the connecting shaft is arranged on a piston of the water valve; a spring arranged on the connecting rod in a sleeved mode is arranged between the piston of the water valve and an end cover; the drain valve further comprises an accelerating mechanism which is arranged in the motor and is capable of accelerating the process that the cam pushes the piston of the water valve to be closed. According to the drain valve, through the fact that the accelerating mechanism is arranged in the motor to accelerate the closing of the piston, the piston is made to be closed more tightly, and the occurrence of the phenomenon of leakage is avoided effectively.

The invention provides an electric pressure boosting energy storage cabin door actuating system. The electric pressure boosting energy storage cabin door actuating system comprises a pressure boosting energy storage device and a transmission device (2); the pressure boosting energy storage device comprises a one way pump-two way motor (3), a first one way valve (4), an energy accumulator (5), a switch valve (6), a servo valve (7), a second one way valve (8) and an oil tank (9); the one way pump-two way motor (3) can suck oil from the oil tank (9) through the second one way valve (8), and the energy accumulator (5) is filled with the oil through the first one way valve (4); the switch valve (6) is used for controlling an oil way between the energy accumulator (5) and the servo valve (7) to be connected or disconnected; the servo valve (7) is used for controlling the oil in the energy accumulator (5) to drive the one way pump-two way motor (3); and the one way pump-two way motor (3) is further used for driving the transmission device (2).

The invention discloses a rapid door opening device of a rotating pressure vessel. The device comprises a support (1), an end cover clamping and loosening mechanism (2), an end cover locking and unlocking mechanism (3), a transverse moving mechanism (4) and a longitudinal moving mechanism (5); the longitudinal moving mechanism (5) is erected on a guide rail mechanism (6) mounted on the ground, the transverse moving mechanism (4) is located on the longitudinal moving mechanism (5), the support (1) is mounted on the transverse moving mechanism (4), and the end cover clamping and loosening mechanism (2) and the end cover locking and unlocking mechanism (3) are mounted at the front end of the support (1), and are arranged in a manner of being matched with an end cover of the rotating pressure vessel; the end cover of the rotating pressure vessel can be driven to be rapidly combined with a kiln body of the rotating pressure vessel and be locked, the opening and closing speed of a feeding and discharging opening door of the rotating pressure vessel can be greatly improved, labor intensity of operation workers is reduced, and safety performance of the rotating pressure vessel can be improved.

The invention discloses a kind of high-speed high flux gas slide valve. Two electromagnets are set in the valve cavity at the two sides of the valve core symmetrically, the hollow valve core has a valve cover, one end of the valve core can open and close with one end of the electromagnet, there is a magnetic pole at the other end of the valve core, the magnetic pole can open and close with the other electromagnet, there are noncircular gap valve meatuses with the same quantity, breadth and interval on the interface of valve core and valve cover, the valve meatus connects with the oulet. The hollow valve can decrease the weight; the availability of the electromagnet power is high.

The invention discloses a medicine addition syringe. The medicine addition syringe comprises a syringe body. A piston is arranged in the syringe body. A needle cylinder base used for containing a needle is arranged at one end of the syringe body. The syringe body is communicated with a liquid outlet of the needle cylinder base. A sealing cover which can only be opened towards the inner portion of the syringe body is arranged above the liquid outlet of the needle cylinder base. A connection structure which can make liquid in the syringe body pass by the sealing cover and enter the needle cylinder base is arranged at the joint of the syringe body and the needle cylinder base. A filter membrane is arranged above the connection structure. Foreign matter and particles in injection can be filtered out through the medicine addition syringe, the filter effect of the medicine addition syringe is good, and the medicine addition syringe is simple in structure and low in machining cost.

The invention provides an electro-hydraulic-servo-driven valve controlling device. The valve controlling device comprises a pinion-and-rack hydraulic cylinder, two sets of electro-hydraulic servo power sources and an electronic control part. The electronic control part comprises a controller, a displayer, a control switch and an angle transducer, wherein the displayer, the control switch and the angle transducer are connected with the controller. The angle transducer is fixed to the upper portion of the pinion-and-rack hydraulic cylinder. A rotating shaft of the pinion-and-rack hydraulic cylinder is connected with a rotating shaft of the angle transducer. The rotating shaft of the pinion-and-rack hydraulic cylinder is connected with a rotating shaft of a valve. Each set of electro-hydraulic servo power source comprises a bidirectional gear quantitative hydraulic pump, an alternating-current servo motor, a pressure oil tank and a double-hydraulic control one-way valve which are connected with the controller. Output shafts of the alternating-current servo motors and input shafts of the hydraulic pumps are connected. The pressure oil tanks are communicated with low-pressure oil suction openings of the hydraulic pumps through the one-way valves. Two outlets of the bidirectional gear quantitative hydraulic pumps of the two sets of electro-hydraulic servo power sources are communicated with the hydraulic cylinder through the double-hydraulic control one-way valves. The valve controlling device has the beneficial effects of being good in reliability, capable of saving energy and efficient.

A leak-free injector is proposed, the closing force of which is increased by a closing piston. An injector has a nozzle needle and a control valve, the nozzle needle being guided in an injector housing and cooperating with a nozzle needle seat of the injector housing. A high-pressure chamber is present between the control valve and the nozzle needle seat, and the closing piston is provided on the nozzle needle. The closing piston subdivides the high-pressure chamber into a first region and a second region. The two regions of the high-pressure chamber communicate hydraulically via a closing throttle restriction.

The invention provides a hydraulic pressurizing energy storage cabin door actuating system. The hydraulic pressurizing energy storage cabin door actuating system comprises a pressurizing energy storage device and a transmission device (2). The pressurizing energy storage device comprises a one-way pump-both-way motor (3), a first one-way valve (4), an energy accumulator (5), a switching valve (6), a servo valve (7), a second one-way valve (8) and an oil tank (9). The one-way pump-both-way motor (3) can suck oil from the oil tank (9) through the second one-way valve (8), and the energy accumulator (5) is filled with oil through the first one-way valve (4). The switching valve (6) is used for controlling the on-off states of an oil path between the energy accumulator (5) and the servo valve (7). The servo valve (7) is used for controlling oil in the energy accumulator (5) to drive the one-way pump-both-way motor (3), and the one-way pump-both-way motor (3) is further used for driving the transmission device (2).

The invention discloses a case opening and closing system of an unmanned helicopter. The unmanned helicopter comprises a case, a motor, a rotor wing and a tail pipe. One end of the motor and one end of the tail pipe are installed in the case. The case opening and closing system comprises a cabin opening formed in the upper portion of the case, an opening and closing cover installed in the cabin opening and a retraction device, the opening and closing cover is connected with the case through a hinge, and the retraction device is installed in the case and connected with the opening and closing cover to control the opening and closing cover to open or close the cabin opening. According to the case opening and closing system of the unmanned helicopter, compressed backspin airflow generated by high-speed rotation of the rotor wing is guided into the case through the cabin opening formed in the upper portion of the case, heat in the case is taken away by backspin airflow directly, heat dissipation efficiency is high, the motor located in the case can be rapidly cooled, the fault rate of the motor is reduced, the crash probability of the unmanned helicopter is reduced, and unnecessary economic loss is avoided.

A valve has a closure member for closing a valve orifice, particularly so as to be tight against gas, in a closed position of the closure member. The closure member can be moved in a closing process by at least one actuator starting from a first position of maximum opening at least along a first partial distance with a linear movement component in direction of its closed position, and the actuator carries out a closing stroke with a linear stroke direction for a movement of the closure member with this movement component. The actuator is so arranged in relation to the closure member that an angle diverging from 0° and 180° is provided between the linear movement component of the closure member along the first partial distance, proceeding from the first position of maximum opening, and the linear stroke direction of the actuator.

The invention discloses a drain valve comprising a motor, a cam, a connecting rod and a water valve. The cam is mounted on an output shaft of the motor, a connecting rod shaft is arranged on the cam, one end of the connecting rod is mounted on the connecting rod shaft, the other end of the connecting rod is mounted on a piston of the water valve, and a spring sleeving the connecting rod is arranged between the piston of the water valve and an end cap. The drain valve further comprises an acceleration mechanism which is arranged in the motor and can accelerating closing of the piston, driven by the cam, of the water valve. Since the acceleration mechanism is arranged in the motor of the cam, closing of the piston is accelerated to enable the piston to be closed more tightly, and leakage is avoided effectively.

The invention belongs to a valve structure and particularly relates to a high pressure exhaust check valve for an ultra-supercritical thermal power generating unit. The valve has the advantage that a valve cavity is in the shape of a reversed cone, and the valve cavity liquid accumulation problem is effectively solved. When the valve flow is small, the high pressure exhaust check valve achieves a forced opening function. An execution mechanism of the high pressure exhaust check valve includes two linear stroke cylinders matched with corresponding connection rod poking fork mechanisms, linear stroke is converted into angular stroke ingeniously, so that the high pressure exhaust check valve can be quickly closed and forcedly opened under lower pressure, flowing capability of the valve is ensured, and the check valve has the advantages of being reliable in sealing, long in service life and the like. A 30-degree inclination angle is adopted in a seat ring hole of a valve body, and operation characteristics of valve performance are improved. Compared with the 5-degree dip angle design of a traditional check valve, the high pressure exhaust check valve can provide larger initial sealing specific pressure to generate low pressure drop and improve valve sealing performance.

The present invention provides a novel electrically-controlled oil injector, comprising an electromagnetic valve, a control piston, a control cavity, a one-way valve, a needle valve cavity, an oil nozzle, a high-pressure oil line and a low-pressure oil line; the high-pressure oil line includes three branches, one branch leads to the control cavity through an oil inflow hole and then leads to the low-pressure oil line through an oil outflow hole, another branch leads to the oil nozzle through a lower end valve of the control piston, the remaining branch leads to the oil nozzle needle valve cavity through the one-way valve and then leads to the low-pressure oil line through a throttle hole, and the control piston is never rigidly connected with the oil nozzle. The novel electrically-controlled oil injector has the advantages that pressure of the oil nozzle needle valve cavity is turned into low pressure so that it is possible to reduce opening resistance for an oil nozzle needle valve; the control piston is used to actively control opening and closing of the high-pressure oil line leading to the oil nozzle so that it is possible to reduce closing resistance for the oil nozzle needle valve; the one-way valve is used to increase an oil line leading to the upper end control cavity of the oil nozzle so that it is possible to increase closing power for the oil nozzle needle valve. It is possible to greatly increase the opening and closing speed of the oil nozzle needle valve, thereby increasing oil injection.

The invention provides a shared-channel electromagnetic pulse valve which comprises a valve body and is characterized in that a gas inlet channel and a shared channel are arranged in the valve body, a valve cap and an electromagnetic pilot valve; the inlet end of the gas inlet channel is communicated with a front gas chamber, and the outlet end of the gas inlet channel is positioned at the inner wall of the electromagnetic pilot valve; one end of the shared channel is positioned on the inner wall of the electromagnetic pilot valve, and the other end of the shared channel is communicated with a rear gas chamber; an exhaust channel is arranged in the electromagnetic pilot valve; the inlet end and the outlet end of the exhaust channel are respectively positioned on the inner wall and the outer edge of the electromagnetic pilot valve; and a circle of annular bulge is formed on the outer edge of a valve core. According to the invention, the closing time is determined by the gas inlet channel, and the opening time is determined by the exhaust channel, so that the contradictory caused by a throttle orifice in the traditional electromagnetic pulse valve is solved, and the closing speed and the opening speed of the electromagnetic pulse valve are greatly increased.

The invention discloses a fireproof door closer comprising a sliding table assembly, a hydraulic assembly and a straight beam. One end of the straight beam is cooperatively installed with a slide seat of the sliding table; the other end of the straight beam is cooperatively installed with the hydraulic assembly; a door plate installation seat is installed on the front side of the hydraulic assembly; the door plate installation seat is cooperatively installed with the top of the door plate of the fireproof door; and a sliding rail of the sliding table assembly is cooperatively installed with a door frame. The sliding table assembly is driven by a motor via combination between a lead screw and a coupler and greater power can be produced; the front side of the hydraulic assembly is connected with the fireproof door plate via the door plate installation seat and then joined with the sliding table assembly via cooperation between the straight beam and the sliding seat of the sliding table assembly; with cooperated use between the sliding table assembly and the hydraulic assembly, when a door seam is opened for the hydraulic assembly, the sliding table assembly can pull the fireproof door open, so speed of fireproof door close can be improved to a large extent.

The invention relates to an advanced ceramic pipe type defueling pump, comprising a pump cylinder, a plunger piston, an upper traveling valve assembly, a lower traveling valve assembly and a strandingvalve assembly. The advanced ceramic pipe type defueling pump is characterized in that the inner wall of a steel-based pipe of the pump cylinder is provided with an advanced ceramic protection layerwith high temperature resistance, abrasion resistance and corrosion resistance, which is used as an lining; the outer surface of a rod body of the plunger piston is previously provided with grooves atintervals, alloy coatings with abrasion resistance and corrosion resistance is sprayed on the grooves, and zirconia toughening alumina ceramic rings are embedded into the surfaces of the alloy coatings inside the grooves.

The invention discloses an odor-resistant structure for a floor drain. The odor-resistant structure comprises a body (B) and a turning plate (F); the upper end of the body (B) is provided with a waterinlet (B-1), and the lower end of the body is provided with a water outlet (B-2); and the turning plate (F) is provided with a supporting point (F-Z), and the first side of the turning plate (F) is matched with the water outlet (B-2) of the body to form a one-way valve structure capable of being opened and closed. The gravity and impact force of water enable the turning plate (F) to rotate, the one-way valve structure is opened, rotation of the turning plate (F) enables liquid (YT) to flow in an cavity (F-Q), and flowing of the liquid (YT) enables a force arm of the gravity center of the turning plate (F) to be shortened, so that the gravity center of the turning plate (F) is located on the second side of the turning plate (F) all the time. The invention further discloses the floor drain,and the floor drain is provided with the odor-resistant structure for the floor drain. According to the odor-resistant structure for the floor drain and the floor drain, a new technical thought is provided; and the odor-resistant structure for the floor drain and the floor drain have the beneficial effects of being easy to open, larger in opening, simple in structure and low in cost.

The invention provides a shutter and an imaging device. The shutter comprises a first mounting plate, a synchronizing ring, multiple first blades and multiple driving devices. A shutter opening is provided on the first mounting plate, and a plurality of the first blades is arranged around the shutter opening.Each of the first blades is rotatably connected with the first mounting plate. The drivingdevices are arranged around the shutter opening, and each of the driving devices is drivingly connected with the synchronization ring. The synchronizing ring is drivingly connected with each of the first blades. Each driving device drives the synchronizing ring to drive at the same time, and then drives each first blade to rotate, so as to realize the opening or closing of the shutter opening. Compared with only one driving device, the power and volume of a single driving device are reduced while the overall output of the driving device is strengthened, thereby increasing the torque of the synchronization ring. The rotation speed of the synchronization ring and the first blades is increased, and finally speed of opening and closing of the shutter is increased.

A driving circuit configured to control at least one switch element is disclosed in the present disclosure. The driving circuit includes a first voltage generating circuit, a second voltage generating circuit and a driving voltage generating circuit. The first voltage generating circuit is configured to generate a first voltage signal. The second voltage generating circuit is configured to generate a second voltage signal. The driving voltage generating circuit is electrically coupled with the first voltage generating circuit and the second voltage generating circuit. The driving voltage generating circuit outputs at least one driving voltage signal according to the first voltage signal and the second voltage signal. The at least one driving voltage signal comprises three levels. At least one level of the levels is lower than zero level.

The invention discloses an on-off valve. The on-off valve comprises a valve body with a valve cavity, a collision pin and a magnet opposite to the collision pin, wherein at least part of the collisionpin is arranged in the valve cavity, and the collision pin comprises a shell and an electromagnetic coil located in the shell. The collision pin comprises the electromagnetic coil, due to the currentdirection changes in the electromagnetic coil, the magnet and the collision pin are mutually attracted or repelled, the collision pin moves in the axial direction of the electromagnetic coil, and accordingly a fluid channel is opened or closed. According to the on-off valve, the fluid flow control precision can be improved.

The invention discloses a valve capable of being opened and closed effortlessly. The valve comprises a valve body, an expansion block is fixedly connected to the bottom of the valve body, an expansion groove is formed in the bottom of the inner side of the valve body, the expansion groove penetrates through the expansion block and extends into the expansion block, a valve rod is installed at the top of the valve body, the valve rod penetrates through the valve body and extends into the expansion groove, a handle is fixedly connected to the top of the valve rod, and a sealing cover plate matched with the valve body is rotationally connected to one side of the inner wall of the expansion groove. The invention relates to the technical field of valves. According to the valve capable of being opened and closed effortlessly, the purpose of saving physical strength needed by use of the valve is achieved, resistance generated by water flow when the valve is closed can be avoided, the use difficulty of the valve is reduced, the buffering capacity in the valve is improved, abrasion caused by collision of internal parts can be reduced, the service life of the valve is prolonged, the cleaning degree of the interior of the valve is improved, and secondary pollution caused by impurities attached to the inner wall to a water body can be avoided.

The invention discloses a high-pressure buffering air cylinder. The high-pressure buffering air cylinder comprises a cylinder body, an inverted-L-shaped left piston and an L-shaped right piston are movably arranged in the cylinder body, wherein an upper driving rack is arranged on the lower surface of a cantilever of the left piston, a lower driving rack is arranged on the upper surface of a cantilever of the right piston, and a transmission gear is arranged between the cantilever of the left piston and the cantilever of the right piston; a left end cover and a right end cover are arranged at the two sides of the cylinder body, an air intake through hole is formed in the left end cover, and an air intake and exhaust port communicated with the air intake through hole and the space between the left piston and the left end cover is formed in the left end cover; an air supply through hole communicated with the air intake through hole is formed in the cylinder body, and the other end of the air supply through hole is communicated with the space between the right piston and the right end cover; and a positioning hole is formed in the middle of the end face of the left piston, a buffering guide column is movably arranged in the positioning hole, a buffering spring is arranged between the buffering guide column and the bottom of the positioning hole, a buffering block is arranged at the end of the buffering guide column, a buffering sealing gasket is arranged in the buffering block, and a positioning ring matched with the buffering sealing gasket is arranged on the left end cover.