450results about How to "High operational reliability" patented technology

The invention relates to the technical field of control valves, in particular to an electric valve for regulating fluid flow. The electric valve comprises a valve seat component, a nut component and a valve needle lead screw component, wherein the valve seat component comprises a valve seat and a valve core seat; the nut component comprises a nut for mounting the valve needle lead screw component; and the lower end of the nut is sleeved with the upper end of the valve core seat. By the electric valve, the lower end of the nut which is used for mounting the valve needle lead screw component is connected with the upper end of the valve core seat in a sleeved mode, so that the coaxiality of the nut and a valve port of the valve core seat is extremely easy to guarantee, the coaxiality of a valve needle and the valve core seat is higher, and the problem that the valve port is loosely sealed or is subjected to eccentric wear can be solved. Meanwhile, because the coaxiality of the valve needle and the valve port is improved, the friction force can be obviously reduced when a rotor of a rotor component rotates, and the action reliability of the electric valve can be improved.

The invention relates to a method for efficiently extracting lithium from salt lake brine. The method comprises the following steps: (1) forming an extraction organic phase by an extraction agent, a co-extraction agent and a diluent, and then mixing the extraction organic phase with salt lake brine according to the volume ratio of (3-4):2 for three-stage extraction with single extraction time being 2-10 minutes to obtain an organic phase; and (2) mixing the organic phase obtained in step (1) with a reverse extraction acid solution (0-1 mol/L) for three-stage reverse extraction with single reverse extraction time being 2-10 minutes, and collecting an aqueous phase which is an aqueous solution containing lithium ions. The co-extraction agent of an extraction system of the method is hydrophobic ionic liquid, compared with conventional synergist ferric trichloride, the interference caused by iron ions is avoided, the reverse extraction acidity is greatly reduced, more importantly the lithium-magnesium separation factor is significantly improved, and the elution step of magnesium ions is reduced; in addition, the method provided by the invention is easy in process, easy to control, high in operation reliability, and good in recyclability of the organic phase, and greatly reduces the production cost for extracting the lithium from the salt lake brine.

The invention discloses a track vehicle rim and tread flaw detection probe assembly system. The track vehicle rim and tread flaw detection probe assembly system comprises a tread flaw detection probe assembly and a rim flaw detection probe assembly. The tread flaw detection probe assembly leans on the tread of a wheel through a mechanical arm; the rim flaw detection probe assembly leans on the rim surface of the wheel through the mechanical arm; the tread flaw detection probe assembly can automatically detect wheel tread and rim defects from the tread in an online mode and is high in detection efficiency, accurate in detection result, simple in structure and convenient to use and operate; the rim flaw detection probe assembly can automatically detect wheel rim surface and tread detects from the inner lateral side of the rim in on online-mode and is high in detection efficiency, accurate in detection result, simple in structure and convenient to use and operate.

The invention belongs to the technical field of polymer processing, and relates to nylon and a preparation method thereof. The nylon is prepared from the following components: 1 part of dicarboxylic acid, diamine, a catalyst, a blocking agent, exchange reaction inhibitor, a nucleating agent and antioxidant, wherein the diamine and the dicarboxylic acid are equal in molar weight; the catalyst accounts for 0.001-0.1wt% of the total weight of the dicarboxylic acid and diamine; the blocking agent accounts for 0.05-1mol% of the total molar weight of the dicarboxylic acid and diamine; the exchange reaction inhibitor accounts for 0.1-5wt% of the total weight of the dicarboxylic acid and diamine; the nucleating agent accounts for 0.1-1wt% of the total weight of the dicarboxylic acid and diamine; and the antioxidant accounts for 0.001-1wt% of the total weight of the dicarboxylic acid and diamine. According to the invention, a primary polymerization product is low in viscosity, and the pressure in a kettle is high, so that pressure spray can be easily realized to prepare dry nylon polymer powder; and further polycondensation can be performed on the low-polymerization-degree nylon through melt polycondensation. Thus, the materials do not need to be further subjected to a long-time solid-phase tackifying process, thereby shortening the reaction time and improving the performance of the high-temperature nylon.

A cash recycling system is presented which has a cash receiving unit, the cash receiving unit has a cash input module, a cash processor, a cash output module, and a cash dispensing unit. The cash dispensing unit has a cash input module, a cash processor, and a cash output module. The cash input module of the cash receiving unit and the cash output module of the cash dispensing unit are accessible to a first type of user. The cash dispensing unit and the cash receiving unit are physically separate from and operative independently of each other. The cash output module of the cash receiving unit is adapted to supply cash, as processed by the cash processor, in a form which is sorted in denomination and therefore directly suitable for loading into the cash input module of the cash dispensing unit.

A linear compressor is provided. The linear compressor may include a shell having a cylindrical shape, a shell cover that covers both open ends of the shell, a cylinder accommodated into the shell and defining a compression space for a refrigerant, a piston that reciprocates within the cylinder in an axial direction to compress the refrigerant within the compression space, a motor assembly including a motor that provides power to the piston and a stator cover that supports the motor, and resonant springs seated on the stator cover that support the piston to allow the piston to perform a resonant motion. The resonant springs may be circularly arranged at three points having a same interval around a center in an axial direction.

The invention relates to a feed device of minor-diameter rodlike workpiece processing equipment. The feed device comprises a horizontal feed channel, the front end of which is connected with a part of a cutting device; a pushing mandril which is driven by a power unit and can axially move in the feed channel is arranged at the rear section of the feed channel; a feed box is arranged above the feed channel; a discharge port which directly faces the feed channel is arranged at the bottom of the feed box and rodlike workpieces can pass through the discharge port one by one; a guide slope which enables the rodlike workpieces to roll to the discharge port under the actions of gravities is arranged inside the feed box; and the feed box is installed on a vibrating device and can vibrate up and down along with the vibrating device. The feed device has the advantages that: 1, with the feed device, the workpieces with small diameter and light weight can be discharged successfully, clamping stagnation is reduced, and the movement reliability is improved; 2, the strength of the pushing mandril and the structural strength of the entire guide structure are improved, and the fault of breakage of a small-size pushing mandril is reduced.

The invention belongs to the technical field of water floating object collecting devices, and relates to an automatic water floating object collecting device. The main body structure of the automatic water floating object collecting device comprises a boat body, a bilateral wheel adjustable horn-shaped inlet section, a floating object inlet automatic door system, a ship power equipment operation system and a floating object outlet gate system. The bilateral wheel adjustable horn-shaped inlet section is arranged at the head end of the boat body, the floating object inlet automatic door system is arranged between the boat body and the bilateral wheel adjustable horn-shaped inlet section, the ship power equipment operation system is arranged in the middle section of the boat body, and the floating object outlet gate system is arranged on the tail portion of the boat body. The automatic water floating object collecting device is simple in structure, reliable in principle, high in operation reliability, simple and convenient to manage and maintain and low in cost, and does not need a machine driven system for collecting rubbish.

The fume-desulfurizing ammonia-thiamine method is to use ammonia as carrier absorbing SO2 in coal burning fume as a kind resource. One fume desulfurizing tower is installed between the boiler exhaust and the chimney, and ammonium sulfite and ammonium bisulfite are produced through reaction and dissolved in circular solution. The solution is neutralized and forced to oxidize to produce ammonium sulfate, which is extracted in evaporating and crystallizing apparatus and is used as composite chemical fertilizer. Or, the ammonium sulfite may be synthesized in chemical plant into other different products.

Provided is a smart well interval control valve. A sliding sleeve is arranged in a fluid throttler, and the sliding sleeve and the fluid throttler are matched to open/close different throttling holes. The fluid throttler is connected onto a lower joint, and the lower joint is connected onto a lower cylinder body of the interval control valve. All sealing groups are compact in structure and form good dynamic/static sealing together with an upper piston, a lower piston, the sliding sleeve, an interval control valve lower cylinder body and an interval control valve upper cylinder body in conditions of underground high temperature and high pressure through Teflon materials. Two liquid inlet hole ducts are arranged at the position of the end surface of the interval control valve upper cylinder body, wherein one liquid inlet hole duct is used for controlling the valve to be opened, the other liquid inlet hole duct is public and is used for controlling the valve to be closed, and both the two liquid inlet hole ducts are in threaded sealing connection with the interval control valve upper cylinder body through 1/4 inch National (American) Pipe Thread (NPT) joints. The fluid throttler is provided with a plurality of throttling holes with different opening degrees, a hydraulic piston is adopted to push the sliding sleeve to move, the liquid inlet amount of formation fluid is adjusted through multistage throttling, and the smart well interval control valve has the advantages of being long in service life, good in sealing performance and the like.

Provided are a welding method and a welding apparatus, which can start the proper advance of an electrode on the basis of both the positioning of the welded portion of a projection bolt with respect to a steel sheet and the completing state of the feed of the projection bolt with respect to the electrode. In the welding method, a bolt (10) held by a feed rod (17) is inserted into a receiving hole (20) of an electrode (6). Air is injected from a holding head (18) thereby to complete the bolt insertion into the receiving hole (20). Then, the feed rod (17) is retracted. After this, the electrode (6) is advanced to weld the bolt to a steel sheet (30) by the electric resistance method. In response to the signal issued by the insertion of the bolt and the signal issued by the positioning of the welded portion of the steel sheet (30), the electrode (6) is advanced relative to the steel sheet (30), and the pressurization and the power feed are then performed.

A chain connector assembly machine comprises a driving device, a working rotating disc, a pin roll delivery device, an outer piece delivery device, a piece assembly device, a round riveting device and a control device. The round riveting device comprises a first round riveting device and a second round riveting device. The driving device is connected with the working rotating disc, 12 pairs of grooves are evenly arranged outside the working rotating disc, the pin roll delivery device is connected with a first pair of grooves, the outer piece delivery device and the piece assembly device are connected with a third pair of grooves, the first round riveting device is connected with a sixth pair of grooves, the second round riveting device is connected with a ninth pair of grooves, and a finished product outlet is arranged at the position of the eleventh pair of grooves. The control device controls the driving device, the pin roll delivery device, the outer piece delivery device, the piece assembly device, the first round riveting device and the second round riveting device. The chain connector assembly machine improves reliability and action synchronism in the production process and avoids loss caused in the production process.

The invention discloses a feeding device of an exposure machine. The feeding device comprises a machine frame, a feeding platform is arranged on the machine frame, a supplement station and a finishedproduct storage station are arranged on the feeding platform, the supplement station is provided with a supplement passing hole, a lifting platform which can extend out of the supplement passing holeis vertically and slidably arranged at the supplement station, the lifting platform is driven by a supplement lifting power device, a plurality of trays used for placing to-be-exposed mobile phone shells are stacked on the lifting platform, a mechanical arm is arranged on the feeding platform, two first sucker assemblies used for sucking the mobile phone shells are arranged at the tail end of themechanical arm, and a working table is provided with a transferring device used for transferring the trays to the finished product storage station. The feeding device can realize automatic feeding ofthe mobile phone shells, the feeding efficiency is improved, and the labor cost is reduced.

The invention provides a permanent magnetic controller, which comprises a trip and a closing coils and a position detecting circuit and a driving control circuit thereof, and a single chip microcomputer and a keyboard thereof; wherein, the detecting circuit adopts a hall current sensor, and is used for collecting current waveform signals of the trip and closing coils, transforming the current waveform signals to voltage signals through a conditioning circuit, and transmitting the voltage signals to the single chip microcomputer; the keyboard is used for inputting tripping and closing instructions; and the single chip microcomputer analyzes and compares the current waveform detection signals with a reference current waveform, and outputs tripping and closing driving signals through the driving control circuit respectively to the trip and the closing coils. The permanent magnetic controller has the advantages that as the closing and trip coil current waveform intercomparison technology is adopted, the reliability of movements of a circuit breaker is improved; furthermore, as heights of waveforms on the trip and the closing coils cannot reach saturation, the aging degree of the coils is reduced, and the service life of a permanent magnetic coil is prolonged.

The invention discloses an electromagnetic valve, comprising a valve base (2), a sleeve (5) connected with the valve base (2), and a coil (10) outside the sleeve (5). The valve base (2) is provided with a valve opening (9) and is fixed with a medium inlet pipe (1) and a medium outlet pipe (3); a static iron core (8) and a movable iron core (6') are arranged in the sleeve (5), a spring is arranged between one end of the movable iron core (6') and the static iron core (8), a containing part (62') and an end part (63') are arranged at the other end of the movable iron core (6'), the containing part (62') contains a sealing element (4) that opens or closes the valve opening (9), and a gap is arranged between the end part (63') and the sealing element (4). In the invention, the reliable operation of the electromagnetic valve is guaranteed without increasing the diameter of the iron core or the cost.

The embodiment of the invention discloses a control method and device of a proportional solenoid and engineering machinery using the device. The method comprises the step of judging the current mode, and if the current mode is a self-learning mode, outputting the given working current to the proportional solenoid, and acquiring the corresponding relation according to the given working current; and if the current mode is a working mode, according to the given signal and the corresponding relation, outputting the pulse width to the proportional solenoid to modulate the PWM value. The invention improves the accuracy and the reliability of the system action.

The invention relates to a power-system direct current power transmission line relay protection field and especially relates to a single-terminal electric-quantity whole-line quick action protection method which can be used to identify faults in and out of an HVDC transmission line area. An amplitude of a specific frequency component in a single-terminal direct-current filter branch is used to realize discrimination of the faults in and out of the area. The method of the invention is used to protect a single-terminal whole-line quick action in the direct current power transmission line of the power system. The protection can be achieved only by using the single-terminal electric quantity. The method has a low requirement to a sampling frequency. An algorithm is simple. Sensitivity is high. The method can be realized during engineering. The action speed is fast, selectivity is good and reliability is high. A theory is completed and is easy to be adjusted. The protection method of the invention can replace current traveling-wave protection which is taken as the main protection of the direct current power transmission line. And the method is especially suitable for realizing the whole-line quick action protection of the ultra/super HVDC power transmission line by using the single-terminal electric quantity.